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arch: remove frv port 

The Fujitsu FRV kernel port has been around for a long time, but has not
seen regular updates in several years and instead was marked 'Orphaned'
in 2016 by long-time maintainer David Howells.

The SoC product line apparently is apparently still around in the form
of the Socionext Milbeaut image processor, but this one no longer uses
the FRV CPU cores.

This removes all FRV specific files from the kernel.

Link: http://www.socionext.com/en/products/assp/milbeaut/
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
hifive-unleashed-5.1
Arnd Bergmann 2018-03-07 21:21:59 +01:00
parent 739d875dd6
commit fd8773f9f5
220 changed files with 0 additions and 28837 deletions
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2
Documentation/00-INDEX
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@ -172,8 +172,6 @@ fmc/
- information about the FMC bus abstraction
fpga/
- FPGA Manager Core.
frv/
- Fujitsu FR-V Linux documentation.
futex-requeue-pi.txt
- info on requeueing of tasks from a non-PI futex to a PI futex
gcc-plugins.txt

51
Documentation/frv/README.txt
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@ -1,51 +0,0 @@
================================
Fujitsu FR-V LINUX DOCUMENTATION
================================
This directory contains documentation for the Fujitsu FR-V CPU architecture
port of Linux.
The following documents are available:
(*) features.txt
A description of the basic features inherent in this architecture port.
(*) configuring.txt
A summary of the configuration options particular to this architecture.
(*) booting.txt
A description of how to boot the kernel image and a summary of the kernel
command line options.
(*) gdbstub.txt
A description of how to debug the kernel using GDB attached by serial
port, and a summary of the services available.
(*) mmu-layout.txt
A description of the virtual and physical memory layout used in the
MMU linux kernel, and the registers used to support it.
(*) gdbinit
An example .gdbinit file for use with GDB. It includes macros for viewing
MMU state on the FR451. See mmu-layout.txt for more information.
(*) clock.txt
A description of the CPU clock scaling interface.
(*) atomic-ops.txt
A description of how the FR-V kernel's atomic operations work.

134
Documentation/frv/atomic-ops.txt
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=====================================
FUJITSU FR-V KERNEL ATOMIC OPERATIONS
=====================================
On the FR-V CPUs, there is only one atomic Read-Modify-Write operation: the SWAP/SWAPI
instruction. Unfortunately, this alone can't be used to implement the following operations:
(*) Atomic add to memory
(*) Atomic subtract from memory
(*) Atomic bit modification (set, clear or invert)
(*) Atomic compare and exchange
On such CPUs, the standard way of emulating such operations in uniprocessor mode is to disable
interrupts, but on the FR-V CPUs, modifying the PSR takes a lot of clock cycles, and it has to be
done twice. This means the CPU runs for a relatively long time with interrupts disabled,
potentially having a great effect on interrupt latency.
=============
NEW ALGORITHM
=============
To get around this, the following algorithm has been implemented. It operates in a way similar to
the LL/SC instruction pairs supported on a number of platforms.
(*) The CCCR.CC3 register is reserved within the kernel to act as an atomic modify abort flag.
(*) In the exception prologues run on kernel->kernel entry, CCCR.CC3 is set to 0 (Undefined
state).
(*) All atomic operations can then be broken down into the following algorithm:
(1) Set ICC3.Z to true and set CC3 to True (ORCC/CKEQ/ORCR).
(2) Load the value currently in the memory to be modified into a register.
(3) Make changes to the value.
(4) If CC3 is still True, simultaneously and atomically (by VLIW packing):
(a) Store the modified value back to memory.
(b) Set ICC3.Z to false (CORCC on GR29 is sufficient for this - GR29 holds the current
task pointer in the kernel, and so is guaranteed to be non-zero).
(5) If ICC3.Z is still true, go back to step (1).
This works in a non-SMP environment because any interrupt or other exception that happens between
steps (1) and (4) will set CC3 to the Undefined, thus aborting the store in (4a), and causing the
condition in ICC3 to remain with the Z flag set, thus causing step (5) to loop back to step (1).
This algorithm suffers from two problems:
(1) The condition CCCR.CC3 is cleared unconditionally by an exception, irrespective of whether or
not any changes were made to the target memory location during that exception.
(2) The branch from step (5) back to step (1) may have to happen more than once until the store
manages to take place. In theory, this loop could cycle forever because there are too many
interrupts coming in, but it's unlikely.
=======
EXAMPLE
=======
Taking an example from include/asm-frv/atomic.h:
static inline int atomic_add_return(int i, atomic_t *v)
{
unsigned long val;
asm("0: \n"
It starts by setting ICC3.Z to true for later use, and also transforming that into CC3 being in the
True state.
" orcc gr0,gr0,gr0,icc3 \n" <-- (1)
" ckeq icc3,cc7 \n" <-- (1)
Then it does the load. Note that the final phase of step (1) is done at the same time as the
load. The VLIW packing ensures they are done simultaneously. The ".p" on the load must not be
removed without swapping the order of these two instructions.
" ld.p %M0,%1 \n" <-- (2)
" orcr cc7,cc7,cc3 \n" <-- (1)
Then the proposed modification is generated. Note that the old value can be retained if required
(such as in test_and_set_bit()).
" add%I2 %1,%2,%1 \n" <-- (3)
Then it attempts to store the value back, contingent on no exception having cleared CC3 since it
was set to True.
" cst.p %1,%M0 ,cc3,#1 \n" <-- (4a)
It simultaneously records the success or failure of the store in ICC3.Z.
" corcc gr29,gr29,gr0 ,cc3,#1 \n" <-- (4b)
Such that the branch can then be taken if the operation was aborted.
" beq icc3,#0,0b \n" <-- (5)
: "+U"(v->counter), "=&r"(val)
: "NPr"(i)
: "memory", "cc7", "cc3", "icc3"
);
return val;
}
=============
CONFIGURATION
=============
The atomic ops implementation can be made inline or out-of-line by changing the
CONFIG_FRV_OUTOFLINE_ATOMIC_OPS configuration variable. Making it out-of-line has a number of
advantages:
- The resulting kernel image may be smaller
- Debugging is easier as atomic ops can just be stepped over and they can be breakpointed
Keeping it inline also has a number of advantages:
- The resulting kernel may be Faster
- no out-of-line function calls need to be made
- the compiler doesn't have half its registers clobbered by making a call
The out-of-line implementations live in arch/frv/lib/atomic-ops.S.

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Documentation/frv/booting.txt
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=========================
BOOTING FR-V LINUX KERNEL
=========================
======================
PROVIDING A FILESYSTEM
======================
First of all, a root filesystem must be made available. This can be done in
one of two ways:
(1) NFS Export
A filesystem should be constructed in a directory on an NFS server that
the target board can reach. This directory should then be NFS exported
such that the target board can read and write into it as root.
(2) Flash Filesystem (JFFS2 Recommended)
In this case, the image must be stored or built up on flash before it
can be used. A complete image can be built using the mkfs.jffs2 or
similar program and then downloaded and stored into flash by RedBoot.
========================
LOADING THE KERNEL IMAGE
========================
The kernel will need to be loaded into RAM by RedBoot (or by some alternative
boot loader) before it can be run. The kernel image (arch/frv/boot/Image) may
be loaded in one of three ways:
(1) Load from Flash
This is the simplest. RedBoot can store an image in the flash (see the
RedBoot documentation) and then load it back into RAM. RedBoot keeps
track of the load address, entry point and size, so the command to do
this is simply:
fis load linux
The image is then ready to be executed.
(2) Load by TFTP
The following command will download a raw binary kernel image from the
default server (as negotiated by BOOTP) and store it into RAM:
load -b 0x00100000 -r /tftpboot/image.bin
The image is then ready to be executed.
(3) Load by Y-Modem
The following command will download a raw binary kernel image across the
serial port that RedBoot is currently using:
load -m ymodem -b 0x00100000 -r zImage
The serial client (such as minicom) must then be told to transmit the
program by Y-Modem.
When finished, the image will then be ready to be executed.
==================
BOOTING THE KERNEL
==================
Boot the image with the following RedBoot command:
exec -c "<CMDLINE>" 0x00100000
For example:
exec -c "console=ttySM0,115200 ip=:::::dhcp root=/dev/mtdblock2 rw"
This will start the kernel running. Note that if the GDB-stub is compiled in,
then the kernel will immediately wait for GDB to connect over serial before
doing anything else. See the section on kernel debugging with GDB.
The kernel command line <CMDLINE> tells the kernel where its console is and
how to find its root filesystem. This is made up of the following components,
separated by spaces:
(*) console=ttyS<x>[,<baud>[<parity>[<bits>[<flow>]]]]
This specifies that the system console should output through on-chip
serial port <x> (which can be "0" or "1").
<baud> is a standard baud rate between 1200 and 115200 (default 9600).
<parity> is a parity setting of "N", "O", "E", "M" or "S" for None, Odd,
Even, Mark or Space. "None" is the default.
<stop> is "7" or "8" for the number of bits per character. "8" is the
default.
<flow> is "r" to use flow control (XCTS on serial port 2 only). The
default is to not use flow control.
For example:
console=ttyS0,115200
To use the first on-chip serial port at baud rate 115200, no parity, 8
bits, and no flow control.
(*) root=<xxxx>
This specifies the device upon which the root filesystem resides. It
may be specified by major and minor number, device path, or even
partition uuid, if supported. For example:
/dev/nfs NFS root filesystem
/dev/mtdblock3 Fourth RedBoot partition on the System Flash
PARTUUID=00112233-4455-6677-8899-AABBCCDDEEFF/PARTNROFF=1
first partition after the partition with the given UUID
253:0 Device with major 253 and minor 0
Authoritative information can be found in
"Documentation/admin-guide/kernel-parameters.rst".
(*) rw
Start with the root filesystem mounted Read/Write.
The remaining components are all optional:
(*) ip=<ip>::::<host>:<iface>:<cfg>
Configure the network interface. If <cfg> is "off" then <ip> should
specify the IP address for the network device <iface>. <host> provide
the hostname for the device.
If <cfg> is "bootp" or "dhcp", then all of these parameters will be
discovered by consulting a BOOTP or DHCP server.
For example, the following might be used:
ip=192.168.73.12::::frv:eth0:off
This sets the IP address on the VDK motherboard RTL8029 ethernet chipset
(eth0) to be 192.168.73.12, and sets the board's hostname to be "frv".
(*) nfsroot=<server>:<dir>[,v<vers>]
This is mandatory if "root=/dev/nfs" is given as an option. It tells the
kernel the IP address of the NFS server providing its root filesystem,
and the pathname on that server of the filesystem.
The NFS version to use can also be specified. v2 and v3 are supported by
Linux.
For example:
nfsroot=192.168.73.1:/nfsroot-frv
(*) profile=1
Turns on the kernel profiler (accessible through /proc/profile).
(*) console=gdb0
This can be used as an alternative to the "console=ttyS..." listed
above. I tells the kernel to pass the console output to GDB if the
gdbstub is compiled in to the kernel.
If this is used, then the gdbstub passes the text to GDB, which then
simply dumps it to its standard output.
(*) mem=<xxx>M
Normally the kernel will work out how much SDRAM it has by reading the
SDRAM controller registers. That can be overridden with this
option. This allows the kernel to be told that it has <xxx> megabytes of
memory available.
(*) init=<prog> [<arg> [<arg> [<arg> ...]]]
This tells the kernel what program to run initially. By default this is
/sbin/init, but /sbin/sash or /bin/sh are common alternatives.

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Clock scaling
-------------
The kernel supports scaling of CLCK.CMODE, CLCK.CM and CLKC.P0 clock
registers. If built with CONFIG_PM and CONFIG_SYSCTL options enabled, four
extra files will appear in the directory /proc/sys/pm/. Reading these files
will show:
p0 -- current value of the P0 bit in CLKC register.
cm -- current value of the CM bits in CLKC register.
cmode -- current value of the CMODE bits in CLKC register.
On all boards, the 'p0' file should also be writable, and either '1' or '0'
can be rewritten, to set or clear the CLKC_P0 bit respectively, hence
controlling whether the resource bus rate clock is halved.
The 'cm' file should also be available on all boards. '0' can be written to it
to shift the board into High-Speed mode (normal), and '1' can be written to
shift the board into Medium-Speed mode. Selecting Low-Speed mode is not
supported by this interface, even though some CPUs do support it.
On the boards with FR405 CPU (i.e. CB60 and CB70), the 'cmode' file is also
writable, allowing the CPU core speed (and other clock speeds) to be
controlled from userspace.
Determining current and possible settings
-----------------------------------------
The current state and the available masks can be found in /proc/cpuinfo. For
example, on the CB70:
# cat /proc/cpuinfo
CPU-Series: fr400
CPU-Core: fr405, gr0-31, BE, CCCR
CPU: mb93405
MMU: Prot
FP-Media: fr0-31, Media
System: mb93091-cb70, mb93090-mb00
PM-Controls: cmode=0xd31f, cm=0x3, p0=0x3, suspend=0x9
PM-Status: cmode=3, cm=0, p0=0
Clock-In: 50.00 MHz
Clock-Core: 300.00 MHz
Clock-SDRAM: 100.00 MHz
Clock-CBus: 100.00 MHz
Clock-Res: 50.00 MHz
Clock-Ext: 50.00 MHz
Clock-DSU: 25.00 MHz
BogoMips: 300.00
And on the PDK, the PM lines look like the following:
PM-Controls: cm=0x3, p0=0x3, suspend=0x9
PM-Status: cmode=9, cm=0, p0=0
The PM-Controls line, if present, will indicate which /proc/sys/pm files can
be set to what values. The specification values are bitmasks; so, for example,
"suspend=0x9" indicates that 0 and 3 can be written validly to
/proc/sys/pm/suspend.
The PM-Controls line will only be present if CONFIG_PM is configured to Y.
The PM-Status line indicates which clock controls are set to which value. If
the file can be read, then the suspend value must be 0, and so that's not
included.

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=======================================
FUJITSU FR-V LINUX KERNEL CONFIGURATION
=======================================
=====================
CONFIGURATION OPTIONS
=====================
The most important setting is in the "MMU support options" tab (the first
presented in the configuration tools available):
(*) "Kernel Type"
This options allows selection of normal, MMU-requiring linux, and uClinux
(which doesn't require an MMU and doesn't have inter-process protection).
There are a number of settings in the "Processor type and features" section of
the kernel configuration that need to be considered.
(*) "CPU"
The register and instruction sets at the core of the processor. This can
only be set to "FR40x/45x/55x" at the moment - but this permits usage of
the kernel with MB93091 CB10, CB11, CB30, CB41, CB60, CB70 and CB451
CPU boards, and with the MB93093 PDK board.
(*) "System"
This option allows a choice of basic system. This governs the peripherals
that are expected to be available.
(*) "Motherboard"
This specifies the type of motherboard being used, and the peripherals
upon it. Currently only "MB93090-MB00" can be set here.
(*) "Default cache-write mode"
This controls the initial data cache write management mode. By default
Write-Through is selected, but Write-Back (Copy-Back) can also be
selected. This can be changed dynamically once the kernel is running (see
features.txt).
There are some architecture specific configuration options in the "General
Setup" section of the kernel configuration too:
(*) "Reserve memory uncached for (PCI) DMA"
This requests that a uClinux kernel set aside some memory in an uncached
window for the use as consistent DMA memory (mainly for PCI). At least a
megabyte will be allocated in this way, possibly more. Any memory so
reserved will not be available for normal allocations.
(*) "Kernel support for ELF-FDPIC binaries"
This enables the binary-format driver for the new FDPIC ELF binaries that
this platform normally uses. These binaries are totally relocatable -
their separate sections can relocated independently, allowing them to be
shared on uClinux where possible. This should normally be enabled.
(*) "Kernel image protection"
This makes the protection register governing access to the core kernel
image prohibit access by userspace programs. This option is available on
uClinux only.
There are also a number of settings in the "Kernel Hacking" section of the
kernel configuration especially for debugging a kernel on this
architecture. See the "gdbstub.txt" file for information about those.
======================
DEFAULT CONFIGURATIONS
======================
The kernel sources include a number of example default configurations:
(*) defconfig-mb93091
Default configuration for the MB93091-VDK with both CPU board and
MB93090-MB00 motherboard running uClinux.
(*) defconfig-mb93091-fb
Default configuration for the MB93091-VDK with CPU board,
MB93090-MB00 motherboard, and DAV board running uClinux.
Includes framebuffer driver.
(*) defconfig-mb93093
Default configuration for the MB93093-PDK board running uClinux.
(*) defconfig-cb70-standalone
Default configuration for the MB93091-VDK with only CB70 CPU board
running uClinux. This will use the CB70's DM9000 for network access.
(*) defconfig-mmu
Default configuration for the MB93091-VDK with both CB451 CPU board and
MB93090-MB00 motherboard running MMU linux.
(*) defconfig-mmu-audio
Default configuration for the MB93091-VDK with CB451 CPU board, DAV
board, and MB93090-MB00 motherboard running MMU linux. Includes
audio driver.
(*) defconfig-mmu-fb
Default configuration for the MB93091-VDK with CB451 CPU board, DAV
board, and MB93090-MB00 motherboard running MMU linux. Includes
framebuffer driver.
(*) defconfig-mmu-standalone
Default configuration for the MB93091-VDK with only CB451 CPU board
running MMU linux.

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===========================
FUJITSU FR-V LINUX FEATURES
===========================
This kernel port has a number of features of which the user should be aware:
(*) Linux and uClinux
The FR-V architecture port supports both normal MMU linux and uClinux out
of the same sources.
(*) CPU support
Support for the FR401, FR403, FR405, FR451 and FR555 CPUs should work with
the same uClinux kernel configuration.
In normal (MMU) Linux mode, only the FR451 CPU will work as that is the
only one with a suitably featured CPU.
The kernel is written and compiled with the assumption that only the
bottom 32 GR registers and no FR registers will be used by the kernel
itself, however all extra userspace registers will be saved on context
switch. Note that since most CPUs can't support lazy switching, no attempt
is made to do lazy register saving where that would be possible (FR555
only currently).
(*) Board support
The board on which the kernel will run can be configured on the "Processor
type and features" configuration tab.
Set the System to "MB93093-PDK" to boot from the MB93093 (FR403) PDK.
Set the System to "MB93091-VDK" to boot from the CB11, CB30, CB41, CB60,
CB70 or CB451 VDK boards. Set the Motherboard setting to "MB93090-MB00" to
boot with the standard ATA90590B VDK motherboard, and set it to "None" to
boot without any motherboard.
(*) Binary Formats
The only userspace binary format supported is FDPIC ELF. Normal ELF, FLAT
and AOUT binaries are not supported for this architecture.
FDPIC ELF supports shared library and program interpreter facilities.
(*) Scheduler Speed
The kernel scheduler runs at 100Hz irrespective of the clock speed on this
architecture. This value is set in asm/param.h (see the HZ macro defined
there).
(*) Normal (MMU) Linux Memory Layout.
See mmu-layout.txt in this directory for a description of the normal linux
memory layout
See include/asm-frv/mem-layout.h for constants pertaining to the memory
layout.
See include/asm-frv/mb-regs.h for the constants pertaining to the I/O bus
controller configuration.
(*) uClinux Memory Layout
The memory layout used by the uClinux kernel is as follows:
0x00000000 - 0x00000FFF Null pointer catch page
0x20000000 - 0x200FFFFF CS2# [PDK] FPGA
0xC0000000 - 0xCFFFFFFF SDRAM
0xC0000000 Base of Linux kernel image
0xE0000000 - 0xEFFFFFFF CS2# [VDK] SLBUS/PCI window
0xF0000000 - 0xF0FFFFFF CS5# MB93493 CSC area (DAV daughter board)
0xF1000000 - 0xF1FFFFFF CS7# [CB70/CB451] CPU-card PCMCIA port space
0xFC000000 - 0xFC0FFFFF CS1# [VDK] MB86943 config space
0xFC100000 - 0xFC1FFFFF CS6# [CB70/CB451] CPU-card DM9000 NIC space
0xFC100000 - 0xFC1FFFFF CS6# [PDK] AX88796 NIC space
0xFC200000 - 0xFC2FFFFF CS3# MB93493 CSR area (DAV daughter board)
0xFD000000 - 0xFDFFFFFF CS4# [CB70/CB451] CPU-card extra flash space
0xFE000000 - 0xFEFFFFFF Internal CPU peripherals
0xFF000000 - 0xFF1FFFFF CS0# Flash 1
0xFF200000 - 0xFF3FFFFF CS0# Flash 2
0xFFC00000 - 0xFFC0001F CS0# [VDK] FPGA
The kernel reads the size of the SDRAM from the memory bus controller
registers by default.
The kernel initialisation code (1) adjusts the SDRAM base addresses to
move the SDRAM to desired address, (2) moves the kernel image down to the
bottom of SDRAM, (3) adjusts the bus controller registers to move I/O
windows, and (4) rearranges the protection registers to protect all of
this.
The reasons for doing this are: (1) the page at address 0 should be
inaccessible so that NULL pointer errors can be caught; and (2) the bottom
three quarters are left unoccupied so that an FR-V CPU with an MMU can use
it for virtual userspace mappings.
See include/asm-frv/mem-layout.h for constants pertaining to the memory
layout.
See include/asm-frv/mb-regs.h for the constants pertaining to the I/O bus
controller configuration.
(*) uClinux Memory Protection
A DAMPR register is used to cover the entire region used for I/O
(0xE0000000 - 0xFFFFFFFF). This permits the kernel to make uncached
accesses to this region. Userspace is not permitted to access it.
The DAMPR/IAMPR protection registers not in use for any other purpose are
tiled over the top of the SDRAM such that:
(1) The core kernel image is covered by as small a tile as possible
granting only the kernel access to the underlying data, whilst
making sure no SDRAM is actually made unavailable by this approach.
(2) All other tiles are arranged to permit userspace access to the rest
of the SDRAM.
Barring point (1), there is nothing to protect kernel data against
userspace damage - but this is uClinux.
(*) Exceptions and Fixups
Since the FR40x and FR55x CPUs that do not have full MMUs generate
imprecise data error exceptions, there are currently no automatic fixup
services available in uClinux. This includes misaligned memory access
fixups.
Userspace EFAULT errors can be trapped by issuing a MEMBAR instruction and
forcing the fault to happen there.
On the FR451, however, data exceptions are mostly precise, and so
exception fixup handling is implemented as normal.
(*) Userspace Breakpoints
The ptrace() system call supports the following userspace debugging
features:
(1) Hardware assisted single step.
(2) Breakpoint via the FR-V "BREAK" instruction.
(3) Breakpoint via the FR-V "TIRA GR0, #1" instruction.
(4) Syscall entry/exit trap.
Each of the above generates a SIGTRAP.
(*) On-Chip Serial Ports
The FR-V on-chip serial ports are made available as ttyS0 and ttyS1. Note
that if the GDB stub is compiled in, ttyS1 will not actually be available
as it will be being used for the GDB stub.
These ports can be made by:
mknod /dev/ttyS0 c 4 64
mknod /dev/ttyS1 c 4 65
(*) Maskable Interrupts
Level 15 (Non-maskable) interrupts are dealt with by the GDB stub if
present, and cause a panic if not. If the GDB stub is present, ttyS1's
interrupts are rated at level 15.
All other interrupts are distributed over the set of available priorities
so that no IRQs are shared where possible. The arch interrupt handling
routines attempt to disentangle the various sources available through the
CPU's own multiplexor, and those on off-CPU peripherals.
(*) Accessing PCI Devices
Where PCI is available, care must be taken when dealing with drivers that
access PCI devices. PCI devices present their data in little-endian form,
but the CPU sees it in big-endian form. The macros in asm/io.h try to get
this right, but may not under all circumstances...
(*) Ax88796 Ethernet Driver
The MB93093 PDK board has an Ax88796 ethernet chipset (an NE2000 clone). A
driver has been written to deal specifically with this. The driver
provides MII services for the card.
The driver can be configured by running make xconfig, and going to:
(*) Network device support
- turn on "Network device support"
(*) Ethernet (10 or 100Mbit)
- turn on "Ethernet (10 or 100Mbit)"
- turn on "AX88796 NE2000 compatible chipset"
The driver can be found in:
drivers/net/ax88796.c
include/asm/ax88796.h
(*) WorkRAM Driver
This driver provides a character device that permits access to the WorkRAM
that can be found on the FR451 CPU. Each page is accessible through a
separate minor number, thereby permitting each page to have its own
filesystem permissions set on the device file.
The device files should be:
mknod /dev/frv/workram0 c 240 0
mknod /dev/frv/workram1 c 240 1
mknod /dev/frv/workram2 c 240 2
...
The driver will not permit the opening of any device file that does not
correspond to at least a partial page of WorkRAM. So the first device file
is the only one available on the FR451. If any other CPU is detected, none
of the devices will be openable.
The devices can be accessed with read, write and llseek, and can also be
mmapped. If they're mmapped, they will only map at the appropriate
0x7e8nnnnn address on linux and at the 0xfe8nnnnn address on uClinux. If
MAP_FIXED is not specified, the appropriate address will be chosen anyway.
The mappings must be MAP_SHARED not MAP_PRIVATE, and must not be
PROT_EXEC. They must also start at file offset 0, and must not be longer
than one page in size.
This driver can be configured by running make xconfig, and going to:
(*) Character devices
- turn on "Fujitsu FR-V CPU WorkRAM support"
(*) Dynamic data cache write mode changing
It is possible to view and to change the data cache's write mode through
the /proc/sys/frv/cache-mode file while the kernel is running. There are
two modes available:
NAME MEANING
===== ==========================================
wthru Data cache is in Write-Through mode
wback Data cache is in Write-Back/Copy-Back mode
To read the cache mode:
# cat /proc/sys/frv/cache-mode
wthru
To change the cache mode:
# echo wback >/proc/sys/frv/cache-mode
# cat /proc/sys/frv/cache-mode
wback
(*) MMU Context IDs and Pinning
On MMU Linux the CPU supports the concept of a context ID in its MMU to
make it more efficient (TLB entries are labelled with a context ID to link
them to specific tasks).
Normally once a context ID is allocated, it will remain affixed to a task
or CLONE_VM'd group of tasks for as long as it exists. However, since the
kernel is capable of supporting more tasks than there are possible ID
numbers, the kernel will pass context IDs from one task to another if
there are insufficient available.
The context ID currently in use by a task can be viewed in /proc:
# grep CXNR /proc/1/status
CXNR: 1
Note that kernel threads do not have a userspace context, and so will not
show a CXNR entry in that file.
Under some circumstances, however, it is desirable to pin a context ID on
a process such that the kernel won't pass it on. This can be done by
writing the process ID of the target process to a special file:
# echo 17 >/proc/sys/frv/pin-cxnr
Reading from the file will then show the context ID pinned.
# cat /proc/sys/frv/pin-cxnr
4
The context ID will remain pinned as long as any process is using that
context, i.e.: when the all the subscribing processes have exited or
exec'd; or when an unpinning request happens:
# echo 0 >/proc/sys/frv/pin-cxnr
When there isn't a pinned context, the file shows -1:
# cat /proc/sys/frv/pin-cxnr
-1

102
Documentation/frv/gdbinit
View File

@ -1,102 +0,0 @@
set remotebreak 1
define _amr
printf "AMRx DAMR IAMR \n"
printf "==== ===================== =====================\n"
printf "amr0 : L:%08lx P:%08lx : L:%08lx P:%08lx\n",__debug_mmu.damr[0x0].L,__debug_mmu.damr[0x0].P,__debug_mmu.iamr[0x0].L,__debug_mmu.iamr[0x0].P
printf "amr1 : L:%08lx P:%08lx : L:%08lx P:%08lx\n",__debug_mmu.damr[0x1].L,__debug_mmu.damr[0x1].P,__debug_mmu.iamr[0x1].L,__debug_mmu.iamr[0x1].P
printf "amr2 : L:%08lx P:%08lx : L:%08lx P:%08lx\n",__debug_mmu.damr[0x2].L,__debug_mmu.damr[0x2].P,__debug_mmu.iamr[0x2].L,__debug_mmu.iamr[0x2].P
printf "amr3 : L:%08lx P:%08lx : L:%08lx P:%08lx\n",__debug_mmu.damr[0x3].L,__debug_mmu.damr[0x3].P,__debug_mmu.iamr[0x3].L,__debug_mmu.iamr[0x3].P
printf "amr4 : L:%08lx P:%08lx : L:%08lx P:%08lx\n",__debug_mmu.damr[0x4].L,__debug_mmu.damr[0x4].P,__debug_mmu.iamr[0x4].L,__debug_mmu.iamr[0x4].P
printf "amr5 : L:%08lx P:%08lx : L:%08lx P:%08lx\n",__debug_mmu.damr[0x5].L,__debug_mmu.damr[0x5].P,__debug_mmu.iamr[0x5].L,__debug_mmu.iamr[0x5].P
printf "amr6 : L:%08lx P:%08lx : L:%08lx P:%08lx\n",__debug_mmu.damr[0x6].L,__debug_mmu.damr[0x6].P,__debug_mmu.iamr[0x6].L,__debug_mmu.iamr[0x6].P
printf "amr7 : L:%08lx P:%08lx : L:%08lx P:%08lx\n",__debug_mmu.damr[0x7].L,__debug_mmu.damr[0x7].P,__debug_mmu.iamr[0x7].L,__debug_mmu.iamr[0x7].P
printf "amr8 : L:%08lx P:%08lx\n",__debug_mmu.damr[0x8].L,__debug_mmu.damr[0x8].P
printf "amr9 : L:%08lx P:%08lx\n",__debug_mmu.damr[0x9].L,__debug_mmu.damr[0x9].P
printf "amr10: L:%08lx P:%08lx\n",__debug_mmu.damr[0xa].L,__debug_mmu.damr[0xa].P
printf "amr11: L:%08lx P:%08lx\n",__debug_mmu.damr[0xb].L,__debug_mmu.damr[0xb].P
end
define _tlb
printf "tlb[0x00]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x0].L,__debug_mmu.tlb[0x0].P,__debug_mmu.tlb[0x40+0x0].L,__debug_mmu.tlb[0x40+0x0].P
printf "tlb[0x01]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x1].L,__debug_mmu.tlb[0x1].P,__debug_mmu.tlb[0x40+0x1].L,__debug_mmu.tlb[0x40+0x1].P
printf "tlb[0x02]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x2].L,__debug_mmu.tlb[0x2].P,__debug_mmu.tlb[0x40+0x2].L,__debug_mmu.tlb[0x40+0x2].P
printf "tlb[0x03]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x3].L,__debug_mmu.tlb[0x3].P,__debug_mmu.tlb[0x40+0x3].L,__debug_mmu.tlb[0x40+0x3].P
printf "tlb[0x04]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x4].L,__debug_mmu.tlb[0x4].P,__debug_mmu.tlb[0x40+0x4].L,__debug_mmu.tlb[0x40+0x4].P
printf "tlb[0x05]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x5].L,__debug_mmu.tlb[0x5].P,__debug_mmu.tlb[0x40+0x5].L,__debug_mmu.tlb[0x40+0x5].P
printf "tlb[0x06]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x6].L,__debug_mmu.tlb[0x6].P,__debug_mmu.tlb[0x40+0x6].L,__debug_mmu.tlb[0x40+0x6].P
printf "tlb[0x07]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x7].L,__debug_mmu.tlb[0x7].P,__debug_mmu.tlb[0x40+0x7].L,__debug_mmu.tlb[0x40+0x7].P
printf "tlb[0x08]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x8].L,__debug_mmu.tlb[0x8].P,__debug_mmu.tlb[0x40+0x8].L,__debug_mmu.tlb[0x40+0x8].P
printf "tlb[0x09]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x9].L,__debug_mmu.tlb[0x9].P,__debug_mmu.tlb[0x40+0x9].L,__debug_mmu.tlb[0x40+0x9].P
printf "tlb[0x0a]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0xa].L,__debug_mmu.tlb[0xa].P,__debug_mmu.tlb[0x40+0xa].L,__debug_mmu.tlb[0x40+0xa].P
printf "tlb[0x0b]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0xb].L,__debug_mmu.tlb[0xb].P,__debug_mmu.tlb[0x40+0xb].L,__debug_mmu.tlb[0x40+0xb].P
printf "tlb[0x0c]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0xc].L,__debug_mmu.tlb[0xc].P,__debug_mmu.tlb[0x40+0xc].L,__debug_mmu.tlb[0x40+0xc].P
printf "tlb[0x0d]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0xd].L,__debug_mmu.tlb[0xd].P,__debug_mmu.tlb[0x40+0xd].L,__debug_mmu.tlb[0x40+0xd].P
printf "tlb[0x0e]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0xe].L,__debug_mmu.tlb[0xe].P,__debug_mmu.tlb[0x40+0xe].L,__debug_mmu.tlb[0x40+0xe].P
printf "tlb[0x0f]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0xf].L,__debug_mmu.tlb[0xf].P,__debug_mmu.tlb[0x40+0xf].L,__debug_mmu.tlb[0x40+0xf].P
printf "tlb[0x10]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x10].L,__debug_mmu.tlb[0x10].P,__debug_mmu.tlb[0x40+0x10].L,__debug_mmu.tlb[0x40+0x10].P
printf "tlb[0x11]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x11].L,__debug_mmu.tlb[0x11].P,__debug_mmu.tlb[0x40+0x11].L,__debug_mmu.tlb[0x40+0x11].P
printf "tlb[0x12]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x12].L,__debug_mmu.tlb[0x12].P,__debug_mmu.tlb[0x40+0x12].L,__debug_mmu.tlb[0x40+0x12].P
printf "tlb[0x13]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x13].L,__debug_mmu.tlb[0x13].P,__debug_mmu.tlb[0x40+0x13].L,__debug_mmu.tlb[0x40+0x13].P
printf "tlb[0x14]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x14].L,__debug_mmu.tlb[0x14].P,__debug_mmu.tlb[0x40+0x14].L,__debug_mmu.tlb[0x40+0x14].P
printf "tlb[0x15]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x15].L,__debug_mmu.tlb[0x15].P,__debug_mmu.tlb[0x40+0x15].L,__debug_mmu.tlb[0x40+0x15].P
printf "tlb[0x16]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x16].L,__debug_mmu.tlb[0x16].P,__debug_mmu.tlb[0x40+0x16].L,__debug_mmu.tlb[0x40+0x16].P
printf "tlb[0x17]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x17].L,__debug_mmu.tlb[0x17].P,__debug_mmu.tlb[0x40+0x17].L,__debug_mmu.tlb[0x40+0x17].P
printf "tlb[0x18]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x18].L,__debug_mmu.tlb[0x18].P,__debug_mmu.tlb[0x40+0x18].L,__debug_mmu.tlb[0x40+0x18].P
printf "tlb[0x19]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x19].L,__debug_mmu.tlb[0x19].P,__debug_mmu.tlb[0x40+0x19].L,__debug_mmu.tlb[0x40+0x19].P
printf "tlb[0x1a]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x1a].L,__debug_mmu.tlb[0x1a].P,__debug_mmu.tlb[0x40+0x1a].L,__debug_mmu.tlb[0x40+0x1a].P
printf "tlb[0x1b]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x1b].L,__debug_mmu.tlb[0x1b].P,__debug_mmu.tlb[0x40+0x1b].L,__debug_mmu.tlb[0x40+0x1b].P
printf "tlb[0x1c]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x1c].L,__debug_mmu.tlb[0x1c].P,__debug_mmu.tlb[0x40+0x1c].L,__debug_mmu.tlb[0x40+0x1c].P
printf "tlb[0x1d]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x1d].L,__debug_mmu.tlb[0x1d].P,__debug_mmu.tlb[0x40+0x1d].L,__debug_mmu.tlb[0x40+0x1d].P
printf "tlb[0x1e]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x1e].L,__debug_mmu.tlb[0x1e].P,__debug_mmu.tlb[0x40+0x1e].L,__debug_mmu.tlb[0x40+0x1e].P
printf "tlb[0x1f]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x1f].L,__debug_mmu.tlb[0x1f].P,__debug_mmu.tlb[0x40+0x1f].L,__debug_mmu.tlb[0x40+0x1f].P
printf "tlb[0x20]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x20].L,__debug_mmu.tlb[0x20].P,__debug_mmu.tlb[0x40+0x20].L,__debug_mmu.tlb[0x40+0x20].P
printf "tlb[0x21]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x21].L,__debug_mmu.tlb[0x21].P,__debug_mmu.tlb[0x40+0x21].L,__debug_mmu.tlb[0x40+0x21].P
printf "tlb[0x22]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x22].L,__debug_mmu.tlb[0x22].P,__debug_mmu.tlb[0x40+0x22].L,__debug_mmu.tlb[0x40+0x22].P
printf "tlb[0x23]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x23].L,__debug_mmu.tlb[0x23].P,__debug_mmu.tlb[0x40+0x23].L,__debug_mmu.tlb[0x40+0x23].P
printf "tlb[0x24]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x24].L,__debug_mmu.tlb[0x24].P,__debug_mmu.tlb[0x40+0x24].L,__debug_mmu.tlb[0x40+0x24].P
printf "tlb[0x25]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x25].L,__debug_mmu.tlb[0x25].P,__debug_mmu.tlb[0x40+0x25].L,__debug_mmu.tlb[0x40+0x25].P
printf "tlb[0x26]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x26].L,__debug_mmu.tlb[0x26].P,__debug_mmu.tlb[0x40+0x26].L,__debug_mmu.tlb[0x40+0x26].P
printf "tlb[0x27]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x27].L,__debug_mmu.tlb[0x27].P,__debug_mmu.tlb[0x40+0x27].L,__debug_mmu.tlb[0x40+0x27].P
printf "tlb[0x28]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x28].L,__debug_mmu.tlb[0x28].P,__debug_mmu.tlb[0x40+0x28].L,__debug_mmu.tlb[0x40+0x28].P
printf "tlb[0x29]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x29].L,__debug_mmu.tlb[0x29].P,__debug_mmu.tlb[0x40+0x29].L,__debug_mmu.tlb[0x40+0x29].P
printf "tlb[0x2a]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x2a].L,__debug_mmu.tlb[0x2a].P,__debug_mmu.tlb[0x40+0x2a].L,__debug_mmu.tlb[0x40+0x2a].P
printf "tlb[0x2b]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x2b].L,__debug_mmu.tlb[0x2b].P,__debug_mmu.tlb[0x40+0x2b].L,__debug_mmu.tlb[0x40+0x2b].P
printf "tlb[0x2c]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x2c].L,__debug_mmu.tlb[0x2c].P,__debug_mmu.tlb[0x40+0x2c].L,__debug_mmu.tlb[0x40+0x2c].P
printf "tlb[0x2d]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x2d].L,__debug_mmu.tlb[0x2d].P,__debug_mmu.tlb[0x40+0x2d].L,__debug_mmu.tlb[0x40+0x2d].P
printf "tlb[0x2e]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x2e].L,__debug_mmu.tlb[0x2e].P,__debug_mmu.tlb[0x40+0x2e].L,__debug_mmu.tlb[0x40+0x2e].P
printf "tlb[0x2f]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x2f].L,__debug_mmu.tlb[0x2f].P,__debug_mmu.tlb[0x40+0x2f].L,__debug_mmu.tlb[0x40+0x2f].P
printf "tlb[0x30]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x30].L,__debug_mmu.tlb[0x30].P,__debug_mmu.tlb[0x40+0x30].L,__debug_mmu.tlb[0x40+0x30].P
printf "tlb[0x31]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x31].L,__debug_mmu.tlb[0x31].P,__debug_mmu.tlb[0x40+0x31].L,__debug_mmu.tlb[0x40+0x31].P
printf "tlb[0x32]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x32].L,__debug_mmu.tlb[0x32].P,__debug_mmu.tlb[0x40+0x32].L,__debug_mmu.tlb[0x40+0x32].P
printf "tlb[0x33]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x33].L,__debug_mmu.tlb[0x33].P,__debug_mmu.tlb[0x40+0x33].L,__debug_mmu.tlb[0x40+0x33].P
printf "tlb[0x34]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x34].L,__debug_mmu.tlb[0x34].P,__debug_mmu.tlb[0x40+0x34].L,__debug_mmu.tlb[0x40+0x34].P
printf "tlb[0x35]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x35].L,__debug_mmu.tlb[0x35].P,__debug_mmu.tlb[0x40+0x35].L,__debug_mmu.tlb[0x40+0x35].P
printf "tlb[0x36]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x36].L,__debug_mmu.tlb[0x36].P,__debug_mmu.tlb[0x40+0x36].L,__debug_mmu.tlb[0x40+0x36].P
printf "tlb[0x37]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x37].L,__debug_mmu.tlb[0x37].P,__debug_mmu.tlb[0x40+0x37].L,__debug_mmu.tlb[0x40+0x37].P
printf "tlb[0x38]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x38].L,__debug_mmu.tlb[0x38].P,__debug_mmu.tlb[0x40+0x38].L,__debug_mmu.tlb[0x40+0x38].P
printf "tlb[0x39]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x39].L,__debug_mmu.tlb[0x39].P,__debug_mmu.tlb[0x40+0x39].L,__debug_mmu.tlb[0x40+0x39].P
printf "tlb[0x3a]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x3a].L,__debug_mmu.tlb[0x3a].P,__debug_mmu.tlb[0x40+0x3a].L,__debug_mmu.tlb[0x40+0x3a].P
printf "tlb[0x3b]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x3b].L,__debug_mmu.tlb[0x3b].P,__debug_mmu.tlb[0x40+0x3b].L,__debug_mmu.tlb[0x40+0x3b].P
printf "tlb[0x3c]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x3c].L,__debug_mmu.tlb[0x3c].P,__debug_mmu.tlb[0x40+0x3c].L,__debug_mmu.tlb[0x40+0x3c].P
printf "tlb[0x3d]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x3d].L,__debug_mmu.tlb[0x3d].P,__debug_mmu.tlb[0x40+0x3d].L,__debug_mmu.tlb[0x40+0x3d].P
printf "tlb[0x3e]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x3e].L,__debug_mmu.tlb[0x3e].P,__debug_mmu.tlb[0x40+0x3e].L,__debug_mmu.tlb[0x40+0x3e].P
printf "tlb[0x3f]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x3f].L,__debug_mmu.tlb[0x3f].P,__debug_mmu.tlb[0x40+0x3f].L,__debug_mmu.tlb[0x40+0x3f].P
end
define _pgd
p (pgd_t[0x40])*(pgd_t*)(__debug_mmu.damr[0x3].L)
end
define _ptd_i
p (pte_t[0x1000])*(pte_t*)(__debug_mmu.damr[0x4].L)
end
define _ptd_d
p (pte_t[0x1000])*(pte_t*)(__debug_mmu.damr[0x5].L)
end

130
Documentation/frv/gdbstub.txt
View File

@ -1,130 +0,0 @@
====================
DEBUGGING FR-V LINUX
====================
The kernel contains a GDB stub that talks GDB remote protocol across a serial
port. This permits GDB to single step through the kernel, set breakpoints and
trap exceptions that happen in kernel space and interrupt execution. It also
permits the NMI interrupt button or serial port events to jump the kernel into
the debugger.
On the CPUs that have on-chip UARTs (FR400, FR403, FR405, FR555), the
GDB stub hijacks a serial port for its own purposes, and makes it
generate level 15 interrupts (NMI). The kernel proper cannot see the serial
port in question under these conditions.
On the MB93091-VDK CPU boards, the GDB stub uses UART1, which would otherwise
be /dev/ttyS1. On the MB93093-PDK, the GDB stub uses UART0. Therefore, on the
PDK there is no externally accessible serial port and the serial port to
which the touch screen is attached becomes /dev/ttyS0.
Note that the GDB stub runs entirely within CPU debug mode, and so should not
incur any exceptions or interrupts whilst it is active. In particular, note
that the clock will lose time since it is implemented in software.
==================
KERNEL PREPARATION
==================
Firstly, a debuggable kernel must be built. To do this, unpack the kernel tree
and copy the configuration that you wish to use to .config. Then reconfigure
the following things on the "Kernel Hacking" tab:
(*) "Include debugging information"
Set this to "Y". This causes all C and Assembly files to be compiled
to include debugging information.
(*) "In-kernel GDB stub"
Set this to "Y". This causes the GDB stub to be compiled into the
kernel.
(*) "Immediate activation"
Set this to "Y" if you want the GDB stub to activate as soon as possible
and wait for GDB to connect. This allows you to start tracing right from
the beginning of start_kernel() in init/main.c.
(*) "Console through GDB stub"
Set this to "Y" if you wish to be able to use "console=gdb0" on the
command line. That tells the kernel to pass system console messages to
GDB (which then prints them on its standard output). This is useful when
debugging the serial drivers that'd otherwise be used to pass console
messages to the outside world.
Then build as usual, download to the board and execute. Note that if
"Immediate activation" was selected, then the kernel will wait for GDB to
attach. If not, then the kernel will boot immediately and GDB will have to
interrupt it or wait for an exception to occur before doing anything with
the kernel.
=========================
KERNEL DEBUGGING WITH GDB
=========================
Set the serial port on the computer that's going to run GDB to the appropriate
baud rate. Assuming the board's debug port is connected to ttyS0/COM1 on the
computer doing the debugging:
stty -F /dev/ttyS0 115200
Then start GDB in the base of the kernel tree:
frv-uclinux-gdb linux [uClinux]
Or:
frv-uclinux-gdb vmlinux [MMU linux]
When the prompt appears:
GNU gdb frv-031024
Copyright 2003 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "--host=i686-pc-linux-gnu --target=frv-uclinux"...
(gdb)
Attach to the board like this:
(gdb) target remote /dev/ttyS0
Remote debugging using /dev/ttyS0
start_kernel () at init/main.c:395
(gdb)
This should show the appropriate lines from the source too. The kernel can
then be debugged almost as if it's any other program.
===============================
INTERRUPTING THE RUNNING KERNEL
===============================
The kernel can be interrupted whilst it is running, causing a jump back to the
GDB stub and the debugger:
(*) Pressing Ctrl-C in GDB. This will cause GDB to try and interrupt the
kernel by sending an RS232 BREAK over the serial line to the GDB
stub. This will (mostly) immediately interrupt the kernel and return it
to the debugger.
(*) Pressing the NMI button on the board will also cause a jump into the
debugger.
(*) Setting a software breakpoint. This sets a break instruction at the
desired location which the GDB stub then traps the exception for.
(*) Setting a hardware breakpoint. The GDB stub is capable of using the IBAR
and DBAR registers to assist debugging.
Furthermore, the GDB stub will intercept a number of exceptions automatically
if they are caused by kernel execution. It will also intercept BUG() macro
invocation.

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=================================
INTERNAL KERNEL ABI FOR FR-V ARCH
=================================
The internal FRV kernel ABI is not quite the same as the userspace ABI. A
number of the registers are used for special purposed, and the ABI is not
consistent between modules vs core, and MMU vs no-MMU.
This partly stems from the fact that FRV CPUs do not have a separate
supervisor stack pointer, and most of them do not have any scratch
registers, thus requiring at least one general purpose register to be
clobbered in such an event. Also, within the kernel core, it is possible to
simply jump or call directly between functions using a relative offset.
This cannot be extended to modules for the displacement is likely to be too
far. Thus in modules the address of a function to call must be calculated
in a register and then used, requiring two extra instructions.
This document has the following sections:
(*) System call register ABI
(*) CPU operating modes
(*) Internal kernel-mode register ABI
(*) Internal debug-mode register ABI
(*) Virtual interrupt handling
========================
SYSTEM CALL REGISTER ABI
========================
When a system call is made, the following registers are effective:
REGISTERS CALL RETURN
=============== ======================= =======================
GR7 System call number Preserved
GR8 Syscall arg #1 Return value
GR9-GR13 Syscall arg #2-6 Preserved
===================
CPU OPERATING MODES
===================
The FR-V CPU has three basic operating modes. In order of increasing
capability:
(1) User mode.
Basic userspace running mode.
(2) Kernel mode.
Normal kernel mode. There are many additional control registers
available that may be accessed in this mode, in addition to all the
stuff available to user mode. This has two submodes:
(a) Exceptions enabled (PSR.T == 1).
Exceptions will invoke the appropriate normal kernel mode
handler. On entry to the handler, the PSR.T bit will be cleared.
(b) Exceptions disabled (PSR.T == 0).
No exceptions or interrupts may happen. Any mandatory exceptions
will cause the CPU to halt unless the CPU is told to jump into
debug mode instead.
(3) Debug mode.
No exceptions may happen in this mode. Memory protection and
management exceptions will be flagged for later consideration, but
the exception handler won't be invoked. Debugging traps such as
hardware breakpoints and watchpoints will be ignored. This mode is
entered only by debugging events obtained from the other two modes.
All kernel mode registers may be accessed, plus a few extra debugging
specific registers.
=================================
INTERNAL KERNEL-MODE REGISTER ABI
=================================
There are a number of permanent register assignments that are set up by
entry.S in the exception prologue. Note that there is a complete set of
exception prologues for each of user->kernel transition and kernel->kernel
transition. There are also user->debug and kernel->debug mode transition
prologues.
REGISTER FLAVOUR USE
=============== ======= ==============================================
GR1 Supervisor stack pointer
GR15 Current thread info pointer
GR16 GP-Rel base register for small data
GR28 Current exception frame pointer (__frame)
GR29 Current task pointer (current)
GR30 Destroyed by kernel mode entry
GR31 NOMMU Destroyed by debug mode entry
GR31 MMU Destroyed by TLB miss kernel mode entry
CCR.ICC2 Virtual interrupt disablement tracking
CCCR.CC3 Cleared by exception prologue
(atomic op emulation)
SCR0 MMU See mmu-layout.txt.
SCR1 MMU See mmu-layout.txt.
SCR2 MMU Save for EAR0 (destroyed by icache insns
in debug mode)
SCR3 MMU Save for GR31 during debug exceptions
DAMR/IAMR NOMMU Fixed memory protection layout.
DAMR/IAMR MMU See mmu-layout.txt.
Certain registers are also used or modified across function calls:
REGISTER CALL RETURN
=============== =============================== ======================
GR0 Fixed Zero -
GR2 Function call frame pointer
GR3 Special Preserved
GR3-GR7 - Clobbered
GR8 Function call arg #1 Return value
(or clobbered)
GR9 Function call arg #2 Return value MSW
(or clobbered)
GR10-GR13 Function call arg #3-#6 Clobbered
GR14 - Clobbered
GR15-GR16 Special Preserved
GR17-GR27 - Preserved
GR28-GR31 Special Only accessed
explicitly
LR Return address after CALL Clobbered
CCR/CCCR - Mostly Clobbered
================================
INTERNAL DEBUG-MODE REGISTER ABI
================================
This is the same as the kernel-mode register ABI for functions calls. The
difference is that in debug-mode there's a different stack and a different
exception frame. Almost all the global registers from kernel-mode
(including the stack pointer) may be changed.
REGISTER FLAVOUR USE
=============== ======= ==============================================
GR1 Debug stack pointer
GR16 GP-Rel base register for small data
GR31 Current debug exception frame pointer
(__debug_frame)
SCR3 MMU Saved value of GR31
Note that debug mode is able to interfere with the kernel's emulated atomic
ops, so it must be exceedingly careful not to do any that would interact
with the main kernel in this regard. Hence the debug mode code (gdbstub) is
almost completely self-contained. The only external code used is the
sprintf family of functions.
Furthermore, break.S is so complicated because single-step mode does not
switch off on entry to an exception. That means unless manually disabled,
single-stepping will blithely go on stepping into things like interrupts.
See gdbstub.txt for more information.
==========================
VIRTUAL INTERRUPT HANDLING
==========================
Because accesses to the PSR is so slow, and to disable interrupts we have
to access it twice (once to read and once to write), we don't actually
disable interrupts at all if we don't have to. What we do instead is use
the ICC2 condition code flags to note virtual disablement, such that if we
then do take an interrupt, we note the flag, really disable interrupts, set
another flag and resume execution at the point the interrupt happened.
Setting condition flags as a side effect of an arithmetic or logical
instruction is really fast. This use of the ICC2 only occurs within the
kernel - it does not affect userspace.
The flags we use are:
(*) CCR.ICC2.Z [Zero flag]
Set to virtually disable interrupts, clear when interrupts are
virtually enabled. Can be modified by logical instructions without
affecting the Carry flag.
(*) CCR.ICC2.C [Carry flag]
Clear to indicate hardware interrupts are really disabled, set otherwise.
What happens is this:
(1) Normal kernel-mode operation.
ICC2.Z is 0, ICC2.C is 1.
(2) An interrupt occurs. The exception prologue examines ICC2.Z and
determines that nothing needs doing. This is done simply with an
unlikely BEQ instruction.
(3) The interrupts are disabled (local_irq_disable)
ICC2.Z is set to 1.
(4) If interrupts were then re-enabled (local_irq_enable):
ICC2.Z would be set to 0.
A TIHI #2 instruction (trap #2 if condition HI - Z==0 && C==0) would
be used to trap if interrupts were now virtually enabled, but
physically disabled - which they're not, so the trap isn't taken. The
kernel would then be back to state (1).
(5) An interrupt occurs. The exception prologue examines ICC2.Z and
determines that the interrupt shouldn't actually have happened. It
jumps aside, and there disabled interrupts by setting PSR.PIL to 14
and then it clears ICC2.C.
(6) If interrupts were then saved and disabled again (local_irq_save):
ICC2.Z would be shifted into the save variable and masked off
(giving a 1).
ICC2.Z would then be set to 1 (thus unchanged), and ICC2.C would be
unaffected (ie: 0).
(7) If interrupts were then restored from state (6) (local_irq_restore):
ICC2.Z would be set to indicate the result of XOR'ing the saved
value (ie: 1) with 1, which gives a result of 0 - thus leaving
ICC2.Z set.
ICC2.C would remain unaffected (ie: 0).
A TIHI #2 instruction would be used to again assay the current state,
but this would do nothing as Z==1.
(8) If interrupts were then enabled (local_irq_enable):
ICC2.Z would be cleared. ICC2.C would be left unaffected. Both
flags would now be 0.
A TIHI #2 instruction again issued to assay the current state would
then trap as both Z==0 [interrupts virtually enabled] and C==0
[interrupts really disabled] would then be true.
(9) The trap #2 handler would simply enable hardware interrupts
(set PSR.PIL to 0), set ICC2.C to 1 and return.
(10) Immediately upon returning, the pending interrupt would be taken.
(11) The interrupt handler would take the path of actually processing the
interrupt (ICC2.Z is clear, BEQ fails as per step (2)).
(12) The interrupt handler would then set ICC2.C to 1 since hardware
interrupts are definitely enabled - or else the kernel wouldn't be here.
(13) On return from the interrupt handler, things would be back to state (1).
This trap (#2) is only available in kernel mode. In user mode it will
result in SIGILL.

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=================================
FR451 MMU LINUX MEMORY MANAGEMENT
=================================
============
MMU HARDWARE
============
FR451 MMU Linux puts the MMU into EDAT mode whilst running. This means that it uses both the SAT
registers and the DAT TLB to perform address translation.
There are 8 IAMLR/IAMPR register pairs and 16 DAMLR/DAMPR register pairs for SAT mode.
In DAT mode, there is also a TLB organised in cache format as 64 lines x 2 ways. Each line spans a
16KB range of addresses, but can match a larger region.
===========================
MEMORY MANAGEMENT REGISTERS
===========================
Certain control registers are used by the kernel memory management routines:
REGISTERS USAGE
====================== ==================================================
IAMR0, DAMR0 Kernel image and data mappings
IAMR1, DAMR1 First-chance TLB lookup mapping
DAMR2 Page attachment for cache flush by page
DAMR3 Current PGD mapping
SCR0, DAMR4 Instruction TLB PGE/PTD cache
SCR1, DAMR5 Data TLB PGE/PTD cache
DAMR6-10 kmap_atomic() mappings
DAMR11 I/O mapping
CXNR mm_struct context ID
TTBR Page directory (PGD) pointer (physical address)
=====================
GENERAL MEMORY LAYOUT
=====================
The physical memory layout is as follows:
PHYSICAL ADDRESS CONTROLLER DEVICE
=================== ============== =======================================
00000000 - BFFFFFFF SDRAM SDRAM area
E0000000 - EFFFFFFF L-BUS CS2# VDK SLBUS/PCI window
F0000000 - F0FFFFFF L-BUS CS5# MB93493 CSC area (DAV daughter board)
F1000000 - F1FFFFFF L-BUS CS7# (CB70 CPU-card PCMCIA port I/O space)
FC000000 - FC0FFFFF L-BUS CS1# VDK MB86943 config space
FC100000 - FC1FFFFF L-BUS CS6# DM9000 NIC I/O space
FC200000 - FC2FFFFF L-BUS CS3# MB93493 CSR area (DAV daughter board)
FD000000 - FDFFFFFF L-BUS CS4# (CB70 CPU-card extra flash space)
FE000000 - FEFFFFFF Internal CPU peripherals
FF000000 - FF1FFFFF L-BUS CS0# Flash 1
FF200000 - FF3FFFFF L-BUS CS0# Flash 2
FFC00000 - FFC0001F L-BUS CS0# FPGA
The virtual memory layout is:
VIRTUAL ADDRESS PHYSICAL TRANSLATOR FLAGS SIZE OCCUPATION
================= ======== ============== ======= ======= ===================================
00004000-BFFFFFFF various TLB,xAMR1 D-N-??V 3GB Userspace
C0000000-CFFFFFFF 00000000 xAMPR0 -L-S--V 256MB Kernel image and data
D0000000-D7FFFFFF various TLB,xAMR1 D-NS??V 128MB vmalloc area
D8000000-DBFFFFFF various TLB,xAMR1 D-NS??V 64MB kmap() area
DC000000-DCFFFFFF various TLB 1MB Secondary kmap_atomic() frame
DD000000-DD27FFFF various DAMR 160KB Primary kmap_atomic() frame
DD040000 DAMR2/IAMR2 -L-S--V page Page cache flush attachment point
DD080000 DAMR3 -L-SC-V page Page Directory (PGD)
DD0C0000 DAMR4 -L-SC-V page Cached insn TLB Page Table lookup
DD100000 DAMR5 -L-SC-V page Cached data TLB Page Table lookup
DD140000 DAMR6 -L-S--V page kmap_atomic(KM_BOUNCE_READ)
DD180000 DAMR7 -L-S--V page kmap_atomic(KM_SKB_SUNRPC_DATA)
DD1C0000 DAMR8 -L-S--V page kmap_atomic(KM_SKB_DATA_SOFTIRQ)
DD200000 DAMR9 -L-S--V page kmap_atomic(KM_USER0)
DD240000 DAMR10 -L-S--V page kmap_atomic(KM_USER1)
E0000000-FFFFFFFF E0000000 DAMR11 -L-SC-V 512MB I/O region
IAMPR1 and DAMPR1 are used as an extension to the TLB.
====================
KMAP AND KMAP_ATOMIC
====================
To access pages in the page cache (which may not be directly accessible if highmem is available),
the kernel calls kmap(), does the access and then calls kunmap(); or it calls kmap_atomic(), does
the access and then calls kunmap_atomic().
kmap() creates an attachment between an arbitrary inaccessible page and a range of virtual
addresses by installing a PTE in a special page table. The kernel can then access this page as it
wills. When it's finished, the kernel calls kunmap() to clear the PTE.
kmap_atomic() does something slightly different. In the interests of speed, it chooses one of two
strategies:
(1) If possible, kmap_atomic() attaches the requested page to one of DAMPR5 through DAMPR10
register pairs; and the matching kunmap_atomic() clears the DAMPR. This makes high memory
support really fast as there's no need to flush the TLB or modify the page tables. The DAMLR
registers being used for this are preset during boot and don't change over the lifetime of the
process. There's a direct mapping between the first few kmap_atomic() types, DAMR number and
virtual address slot.
However, there are more kmap_atomic() types defined than there are DAMR registers available,
so we fall back to:
(2) kmap_atomic() uses a slot in the secondary frame (determined by the type parameter), and then
locks an entry in the TLB to translate that slot to the specified page. The number of slots is
obviously limited, and their positions are controlled such that each slot is matched by a
different line in the TLB. kunmap() ejects the entry from the TLB.
Note that the first three kmap atomic types are really just declared as placeholders. The DAMPR
registers involved are actually modified directly.
Also note that kmap() itself may sleep, kmap_atomic() may never sleep and both always succeed;
furthermore, a driver using kmap() may sleep before calling kunmap(), but may not sleep before
calling kunmap_atomic() if it had previously called kmap_atomic().
===============================
USING MORE THAN 256MB OF MEMORY
===============================
The kernel cannot access more than 256MB of memory directly. The physical layout, however, permits
up to 3GB of SDRAM (possibly 3.25GB) to be made available. By using CONFIG_HIGHMEM, the kernel can
allow userspace (by way of page tables) and itself (by way of kmap) to deal with the memory
allocation.
External devices can, of course, still DMA to and from all of the SDRAM, even if the kernel can't
see it directly. The kernel translates page references into real addresses for communicating to the
devices.
===================
PAGE TABLE TOPOLOGY
===================
The page tables are arranged in 2-layer format. There is a middle layer (PMD) that would be used in
3-layer format tables but that is folded into the top layer (PGD) and so consumes no extra memory
or processing power.
+------+ PGD PMD
| TTBR |--->+-------------------+
+------+ | | : STE |
| PGE0 | PME0 : STE |
| | : STE |
+-------------------+ Page Table
| | : STE -------------->+--------+ +0x0000
| PGE1 | PME0 : STE -----------+ | PTE0 |
| | : STE -------+ | +--------+
+-------------------+ | | | PTE63 |
| | : STE | | +-->+--------+ +0x0100
| PGE2 | PME0 : STE | | | PTE64 |
| | : STE | | +--------+
+-------------------+ | | PTE127 |
| | : STE | +------>+--------+ +0x0200
| PGE3 | PME0 : STE | | PTE128 |
| | : STE | +--------+
+-------------------+ | PTE191 |
+--------+ +0x0300
Each Page Directory (PGD) is 16KB (page size) in size and is divided into 64 entries (PGEs). Each
PGE contains one Page Mid Directory (PMD).
Each PMD is 256 bytes in size and contains a single entry (PME). Each PME holds 64 FR451 MMU
segment table entries of 4 bytes apiece. Each PME "points to" a page table. In practice, each STE
points to a subset of the page table, the first to PT+0x0000, the second to PT+0x0100, the third to
PT+0x200, and so on.
Each PGE and PME covers 64MB of the total virtual address space.
Each Page Table (PTD) is 16KB (page size) in size, and is divided into 4096 entries (PTEs). Each
entry can point to one 16KB page. In practice, each Linux page table is subdivided into 64 FR451
MMU page tables. But they are all grouped together to make management easier, in particular rmap
support is then trivial.
Grouping page tables in this fashion makes PGE caching in SCR0/SCR1 more efficient because the
coverage of the cached item is greater.
Page tables for the vmalloc area are allocated at boot time and shared between all mm_structs.
=================
USER SPACE LAYOUT
=================
For MMU capable Linux, the regions userspace code are allowed to access are kept entirely separate
from those dedicated to the kernel:
VIRTUAL ADDRESS SIZE PURPOSE
================= ===== ===================================
00000000-00003fff 4KB NULL pointer access trap
00004000-01ffffff ~32MB lower mmap space (grows up)
02000000-021fffff 2MB Stack space (grows down from top)
02200000-nnnnnnnn Executable mapping
nnnnnnnn- brk space (grows up)
-bfffffff upper mmap space (grows down)
This is so arranged so as to make best use of the 16KB page tables and the way in which PGEs/PMEs
are cached by the TLB handler. The lower mmap space is filled first, and then the upper mmap space
is filled.
===============================
GDB-STUB MMU DEBUGGING SERVICES
===============================
The gdb-stub included in this kernel provides a number of services to aid in the debugging of MMU
related kernel services:
(*) Every time the kernel stops, certain state information is dumped into __debug_mmu. This
variable is defined in arch/frv/kernel/gdb-stub.c. Note that the gdbinit file in this
directory has some useful macros for dealing with this.
(*) __debug_mmu.tlb[]
This receives the current TLB contents. This can be viewed with the _tlb GDB macro:
(gdb) _tlb
tlb[0x00]: 01000005 00718203 01000002 00718203
tlb[0x01]: 01004002 006d4201 01004005 006d4203
tlb[0x02]: 01008002 006d0201 01008006 00004200
tlb[0x03]: 0100c006 007f4202 0100c002 0064c202
tlb[0x04]: 01110005 00774201 01110002 00774201
tlb[0x05]: 01114005 00770201 01114002 00770201
tlb[0x06]: 01118002 0076c201 01118005 0076c201
...
tlb[0x3d]: 010f4002 00790200 001f4002 0054ca02
tlb[0x3e]: 010f8005 0078c201 010f8002 0078c201
tlb[0x3f]: 001fc002 0056ca01 001fc005 00538a01
(*) __debug_mmu.iamr[]
(*) __debug_mmu.damr[]
These receive the current IAMR and DAMR contents. These can be viewed with the _amr
GDB macro:
(gdb) _amr
AMRx DAMR IAMR
==== ===================== =====================
amr0 : L:c0000000 P:00000cb9 : L:c0000000 P:000004b9
amr1 : L:01070005 P:006f9203 : L:0102c005 P:006a1201
amr2 : L:d8d00000 P:00000000 : L:d8d00000 P:00000000
amr3 : L:d8d04000 P:00534c0d : L:00000000 P:00000000
amr4 : L:d8d08000 P:00554c0d : L:00000000 P:00000000
amr5 : L:d8d0c000 P:00554c0d : L:00000000 P:00000000
amr6 : L:d8d10000 P:00000000 : L:00000000 P:00000000
amr7 : L:d8d14000 P:00000000 : L:00000000 P:00000000
amr8 : L:d8d18000 P:00000000
amr9 : L:d8d1c000 P:00000000
amr10: L:d8d20000 P:00000000
amr11: L:e0000000 P:e0000ccd
(*) The current task's page directory is bound to DAMR3.
This can be viewed with the _pgd GDB macro:
(gdb) _pgd
$3 = {{pge = {{ste = {0x554001, 0x554101, 0x554201, 0x554301, 0x554401,
0x554501, 0x554601, 0x554701, 0x554801, 0x554901, 0x554a01,
0x554b01, 0x554c01, 0x554d01, 0x554e01, 0x554f01, 0x555001,
0x555101, 0x555201, 0x555301, 0x555401, 0x555501, 0x555601,
0x555701, 0x555801, 0x555901, 0x555a01, 0x555b01, 0x555c01,
0x555d01, 0x555e01, 0x555f01, 0x556001, 0x556101, 0x556201,
0x556301, 0x556401, 0x556501, 0x556601, 0x556701, 0x556801,
0x556901, 0x556a01, 0x556b01, 0x556c01, 0x556d01, 0x556e01,
0x556f01, 0x557001, 0x557101, 0x557201, 0x557301, 0x557401,
0x557501, 0x557601, 0x557701, 0x557801, 0x557901, 0x557a01,
0x557b01, 0x557c01, 0x557d01, 0x557e01, 0x557f01}}}}, {pge = {{
ste = {0x0 <repeats 64 times>}}}} <repeats 51 times>, {pge = {{ste = {
0x248001, 0x248101, 0x248201, 0x248301, 0x248401, 0x248501,
0x248601, 0x248701, 0x248801, 0x248901, 0x248a01, 0x248b01,
0x248c01, 0x248d01, 0x248e01, 0x248f01, 0x249001, 0x249101,
0x249201, 0x249301, 0x249401, 0x249501, 0x249601, 0x249701,
0x249801, 0x249901, 0x249a01, 0x249b01, 0x249c01, 0x249d01,
0x249e01, 0x249f01, 0x24a001, 0x24a101, 0x24a201, 0x24a301,
0x24a401, 0x24a501, 0x24a601, 0x24a701, 0x24a801, 0x24a901,
0x24aa01, 0x24ab01, 0x24ac01, 0x24ad01, 0x24ae01, 0x24af01,
0x24b001, 0x24b101, 0x24b201, 0x24b301, 0x24b401, 0x24b501,
0x24b601, 0x24b701, 0x24b801, 0x24b901, 0x24ba01, 0x24bb01,
0x24bc01, 0x24bd01, 0x24be01, 0x24bf01}}}}, {pge = {{ste = {
0x0 <repeats 64 times>}}}} <repeats 11 times>}
(*) The PTD last used by the instruction TLB miss handler is attached to DAMR4.
(*) The PTD last used by the data TLB miss handler is attached to DAMR5.
These can be viewed with the _ptd_i and _ptd_d GDB macros:
(gdb) _ptd_d
$5 = {{pte = 0x0} <repeats 127 times>, {pte = 0x539b01}, {
pte = 0x0} <repeats 896 times>, {pte = 0x719303}, {pte = 0x6d5303}, {
pte = 0x0}, {pte = 0x0}, {pte = 0x0}, {pte = 0x0}, {pte = 0x0}, {
pte = 0x0}, {pte = 0x0}, {pte = 0x0}, {pte = 0x0}, {pte = 0x6a1303}, {
pte = 0x0} <repeats 12 times>, {pte = 0x709303}, {pte = 0x0}, {pte = 0x0},
{pte = 0x6fd303}, {pte = 0x6f9303}, {pte = 0x6f5303}, {pte = 0x0}, {
pte = 0x6ed303}, {pte = 0x531b01}, {pte = 0x50db01}, {
pte = 0x0} <repeats 13 times>, {pte = 0x5303}, {pte = 0x7f5303}, {
pte = 0x509b01}, {pte = 0x505b01}, {pte = 0x7c9303}, {pte = 0x7b9303}, {
pte = 0x7b5303}, {pte = 0x7b1303}, {pte = 0x7ad303}, {pte = 0x0}, {
pte = 0x0}, {pte = 0x7a1303}, {pte = 0x0}, {pte = 0x795303}, {pte = 0x0}, {
pte = 0x78d303}, {pte = 0x0}, {pte = 0x0}, {pte = 0x0}, {pte = 0x0}, {
pte = 0x0}, {pte = 0x775303}, {pte = 0x771303}, {pte = 0x76d303}, {
pte = 0x0}, {pte = 0x765303}, {pte = 0x7c5303}, {pte = 0x501b01}, {
pte = 0x4f1b01}, {pte = 0x4edb01}, {pte = 0x0}, {pte = 0x4f9b01}, {
pte = 0x4fdb01}, {pte = 0x0} <repeats 2992 times>}

4
MAINTAINERS
View File

@ -5799,10 +5799,6 @@ F: fs/crypto/
F: include/linux/fscrypt*.h
F: Documentation/filesystems/fscrypt.rst
FUJITSU FR-V (FRV) PORT
S: Orphan
F: arch/frv/
FUJITSU LAPTOP EXTRAS
M: Jonathan Woithe <jwoithe@just42.net>
L: platform-driver-x86@vger.kernel.org

386
arch/frv/Kconfig
View File

@ -1,386 +0,0 @@
# SPDX-License-Identifier: GPL-2.0
config FRV
bool
default y
select HAVE_IDE
select HAVE_ARCH_TRACEHOOK
select HAVE_PERF_EVENTS
select HAVE_UID16
select VIRT_TO_BUS
select GENERIC_IRQ_SHOW
select HAVE_DEBUG_BUGVERBOSE
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select GENERIC_CPU_DEVICES
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_WANT_IPC_PARSE_VERSION
select OLD_SIGSUSPEND3
select OLD_SIGACTION
select HAVE_DEBUG_STACKOVERFLOW
select ARCH_NO_COHERENT_DMA_MMAP
config CPU_BIG_ENDIAN
def_bool y
config ZONE_DMA
bool
default y
config RWSEM_GENERIC_SPINLOCK
bool
default y
config RWSEM_XCHGADD_ALGORITHM
bool
config GENERIC_HWEIGHT
bool
default y
config GENERIC_CALIBRATE_DELAY
bool
default n
config TIME_LOW_RES
bool
default y
config QUICKLIST
bool
default y
config ARCH_HAS_ILOG2_U32
bool
default y
config ARCH_HAS_ILOG2_U64
bool
default y
config HZ
int
default 1000
source "init/Kconfig"
source "kernel/Kconfig.freezer"
menu "Fujitsu FR-V system setup"
config MMU
bool "MMU support"
help
This options switches on and off support for the FR-V MMU
(effectively switching between vmlinux and uClinux). Not all FR-V
CPUs support this. Currently only the FR451 has a sufficiently
featured MMU.
config FRV_OUTOFLINE_ATOMIC_OPS
bool "Out-of-line the FRV atomic operations"
default n
help
Setting this option causes the FR-V atomic operations to be mostly
implemented out-of-line.
See Documentation/frv/atomic-ops.txt for more information.
config HIGHMEM
bool "High memory support"
depends on MMU
default y
help
If you wish to use more than 256MB of memory with your MMU based
system, you will need to select this option. The kernel can only see
the memory between 0xC0000000 and 0xD0000000 directly... everything
else must be kmapped.
The arch is, however, capable of supporting up to 3GB of SDRAM.
config HIGHPTE
bool "Allocate page tables in highmem"
depends on HIGHMEM
default y
help
The VM uses one page of memory for each page table. For systems
with a lot of RAM, this can be wasteful of precious low memory.
Setting this option will put user-space page tables in high memory.
source "mm/Kconfig"
choice
prompt "uClinux kernel load address"
depends on !MMU
default UCPAGE_OFFSET_C0000000
help
This option sets the base address for the uClinux kernel. The kernel
will rearrange the SDRAM layout to start at this address, and move
itself to start there. It must be greater than 0, and it must be
sufficiently less than 0xE0000000 that the SDRAM does not intersect
the I/O region.
The base address must also be aligned such that the SDRAM controller
can decode it. For instance, a 512MB SDRAM bank must be 512MB aligned.
config UCPAGE_OFFSET_20000000
bool "0x20000000"
config UCPAGE_OFFSET_40000000
bool "0x40000000"
config UCPAGE_OFFSET_60000000
bool "0x60000000"
config UCPAGE_OFFSET_80000000
bool "0x80000000"
config UCPAGE_OFFSET_A0000000
bool "0xA0000000"
config UCPAGE_OFFSET_C0000000
bool "0xC0000000 (Recommended)"
endchoice
config PAGE_OFFSET
hex
default 0x20000000 if UCPAGE_OFFSET_20000000
default 0x40000000 if UCPAGE_OFFSET_40000000
default 0x60000000 if UCPAGE_OFFSET_60000000
default 0x80000000 if UCPAGE_OFFSET_80000000
default 0xA0000000 if UCPAGE_OFFSET_A0000000
default 0xC0000000
config PROTECT_KERNEL
bool "Protect core kernel against userspace"
depends on !MMU
default y
help
Selecting this option causes the uClinux kernel to change the
permittivity of DAMPR register covering the core kernel image to
prevent userspace accessing the underlying memory directly.
choice
prompt "CPU Caching mode"
default FRV_DEFL_CACHE_WBACK
help
This option determines the default caching mode for the kernel.
Write-Back caching mode involves the all reads and writes causing
the affected cacheline to be read into the cache first before being
operated upon. Memory is not then updated by a write until the cache
is filled and a cacheline needs to be displaced from the cache to
make room. Only at that point is it written back.
Write-Behind caching is similar to Write-Back caching, except that a
write won't fetch a cacheline into the cache if there isn't already
one there; it will write directly to memory instead.
Write-Through caching only fetches cachelines from memory on a
read. Writes always get written directly to memory. If the affected
cacheline is also in cache, it will be updated too.
The final option is to turn of caching entirely.
Note that not all CPUs support Write-Behind caching. If the CPU on
which the kernel is running doesn't, it'll fall back to Write-Back
caching.
config FRV_DEFL_CACHE_WBACK
bool "Write-Back"
config FRV_DEFL_CACHE_WBEHIND
bool "Write-Behind"
config FRV_DEFL_CACHE_WTHRU
bool "Write-Through"
config FRV_DEFL_CACHE_DISABLED
bool "Disabled"
endchoice
menu "CPU core support"
config CPU_FR401
bool "Include FR401 core support"
depends on !MMU
default y
help
This enables support for the FR401, FR401A and FR403 CPUs
config CPU_FR405
bool "Include FR405 core support"
depends on !MMU
default y
help
This enables support for the FR405 CPU
config CPU_FR451
bool "Include FR451 core support"
default y
help
This enables support for the FR451 CPU
config CPU_FR451_COMPILE
bool "Specifically compile for FR451 core"
depends on CPU_FR451 && !CPU_FR401 && !CPU_FR405 && !CPU_FR551
default y
help
This causes appropriate flags to be passed to the compiler to
optimise for the FR451 CPU
config CPU_FR551
bool "Include FR551 core support"
depends on !MMU
default y
help
This enables support for the FR555 CPU
config CPU_FR551_COMPILE
bool "Specifically compile for FR551 core"
depends on CPU_FR551 && !CPU_FR401 && !CPU_FR405 && !CPU_FR451
default y
help
This causes appropriate flags to be passed to the compiler to
optimise for the FR555 CPU
config FRV_L1_CACHE_SHIFT
int
default "5" if CPU_FR401 || CPU_FR405 || CPU_FR451
default "6" if CPU_FR551
endmenu
choice
prompt "System support"
default MB93091_VDK
config MB93091_VDK
bool "MB93091 CPU board with or without motherboard"
config MB93093_PDK
bool "MB93093 PDK unit"
endchoice
if MB93091_VDK
choice
prompt "Motherboard support"
default MB93090_MB00
config MB93090_MB00
bool "Use the MB93090-MB00 motherboard"
help
Select this option if the MB93091 CPU board is going to be used with
a MB93090-MB00 VDK motherboard
config MB93091_NO_MB
bool "Use standalone"
help
Select this option if the MB93091 CPU board is going to be used
without a motherboard
endchoice
endif
config FUJITSU_MB93493
bool "MB93493 Multimedia chip"
help
Select this option if the MB93493 multimedia chip is going to be
used.
choice
prompt "GP-Relative data support"
default GPREL_DATA_8
help
This option controls what data, if any, should be placed in the GP
relative data sections. Using this means that the compiler can
generate accesses to the data using GR16-relative addressing which
is faster than absolute instructions and saves space (2 instructions
per access).
However, the GPREL region is limited in size because the immediate
value used in the load and store instructions is limited to a 12-bit
signed number.
So if the linker starts complaining that accesses to GPREL data are
out of range, try changing this option from the default.
Note that modules will always be compiled with this feature disabled
as the module data will not be in range of the GP base address.
config GPREL_DATA_8
bool "Put data objects of up to 8 bytes into GP-REL"
config GPREL_DATA_4
bool "Put data objects of up to 4 bytes into GP-REL"
config GPREL_DATA_NONE
bool "Don't use GP-REL"
endchoice
config FRV_ONCPU_SERIAL
bool "Use on-CPU serial ports"
select SERIAL_8250
default y
config PCI
bool "Use PCI"
depends on MB93090_MB00
default y
select GENERIC_PCI_IOMAP
help
Some FR-V systems (such as the MB93090-MB00 VDK) have PCI
onboard. If you have one of these boards and you wish to use the PCI
facilities, say Y here.
config RESERVE_DMA_COHERENT
bool "Reserve DMA coherent memory"
depends on PCI && !MMU
default y
help
Many PCI drivers require access to uncached memory for DMA device
communications (such as is done with some Ethernet buffer rings). If
a fully featured MMU is available, this can be done through page
table settings, but if not, a region has to be set aside and marked
with a special DAMPR register.
Setting this option causes uClinux to set aside a portion of the
available memory for use in this manner. The memory will then be
unavailable for normal kernel use.
source "drivers/pci/Kconfig"
source "drivers/pcmcia/Kconfig"
menu "Power management options"
config ARCH_SUSPEND_POSSIBLE
def_bool y
source kernel/power/Kconfig
endmenu
endmenu
menu "Executable formats"
source "fs/Kconfig.binfmt"
endmenu
source "net/Kconfig"
source "drivers/Kconfig"
source "fs/Kconfig"
source "arch/frv/Kconfig.debug"
source "security/Kconfig"
source "crypto/Kconfig"
source "lib/Kconfig"

49
arch/frv/Kconfig.debug
View File

@ -1,49 +0,0 @@
# SPDX-License-Identifier: GPL-2.0
menu "Kernel hacking"
source "lib/Kconfig.debug"
config GDBSTUB
bool "Remote GDB kernel debugging"
depends on DEBUG_KERNEL
select DEBUG_INFO
select FRAME_POINTER
help
If you say Y here, it will be possible to remotely debug the kernel
using gdb. This enlarges your kernel ELF image disk size by several
megabytes and requires a machine with more than 16 MB, better 32 MB
RAM to avoid excessive linking time. This is only useful for kernel
hackers. If unsure, say N.
choice
prompt "GDB stub port"
default GDBSTUB_UART1
depends on GDBSTUB
help
Select the on-CPU port used for GDB-stub
config GDBSTUB_UART0
bool "/dev/ttyS0"
config GDBSTUB_UART1
bool "/dev/ttyS1"
endchoice
config GDBSTUB_IMMEDIATE
bool "Break into GDB stub immediately"
depends on GDBSTUB
help
If you say Y here, GDB stub will break into the program as soon as
possible, leaving the program counter at the beginning of
start_kernel() in init/main.c.
config GDB_CONSOLE
bool "Console output to GDB"
depends on GDBSTUB
help
If you are using GDB for remote debugging over a serial port and
would like kernel messages to be formatted into GDB $O packets so
that GDB prints them as program output, say 'Y'.
endmenu

90
arch/frv/Makefile
View File

@ -1,90 +0,0 @@
#
# frv/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (c) 2003, 2004 Red Hat Inc.
# - Written by David Howells <dhowells@redhat.com>
# - Derived from arch/m68knommu/Makefile,
# Copyright (c) 1999,2001 D. Jeff Dionne <jeff@lineo.ca>,
# Rt-Control Inc. / Lineo, Inc.
#
# Copyright (C) 1998,1999 D. Jeff Dionne <jeff@uclinux.org>,
# Kenneth Albanowski <kjahds@kjahds.com>,
#
# Based on arch/m68k/Makefile:
# Copyright (C) 1994 by Hamish Macdonald
#
ifdef CONFIG_MMU
UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\"
else
UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\"
endif
KBUILD_AFLAGS_MODULE += -G0 -mlong-calls
KBUILD_CFLAGS_MODULE += -G0 -mlong-calls
ifdef CONFIG_GPREL_DATA_8
KBUILD_CFLAGS += -G8
else
ifdef CONFIG_GPREL_DATA_4
KBUILD_CFLAGS += -G4
else
ifdef CONFIG_GPREL_DATA_NONE
KBUILD_CFLAGS += -G0
endif
endif
endif
#LDFLAGS_vmlinux := -Map linkmap.txt
ifdef CONFIG_GC_SECTIONS
KBUILD_CFLAGS += -ffunction-sections -fdata-sections
endif
ifndef CONFIG_FRAME_POINTER
KBUILD_CFLAGS += -mno-linked-fp
endif
ifdef CONFIG_CPU_FR451_COMPILE
KBUILD_CFLAGS += -mcpu=fr450
KBUILD_AFLAGS += -mcpu=fr450
else
ifdef CONFIG_CPU_FR551_COMPILE
KBUILD_CFLAGS += -mcpu=fr550
KBUILD_AFLAGS += -mcpu=fr550
else
KBUILD_CFLAGS += -mcpu=fr400
KBUILD_AFLAGS += -mcpu=fr400
endif
endif
# pretend the kernel is going to run on an FR400 with no media-fp unit
# - reserve CC3 for use with atomic ops
# - all the extra registers are dealt with only at context switch time
KBUILD_CFLAGS += -mno-fdpic -mgpr-32 -msoft-float -mno-media
KBUILD_CFLAGS += -ffixed-fcc3 -ffixed-cc3 -ffixed-gr15 -ffixed-icc2
KBUILD_AFLAGS += -mno-fdpic
head-y := arch/frv/kernel/head.o
core-y += arch/frv/kernel/ arch/frv/mm/
libs-y += arch/frv/lib/
core-$(CONFIG_MB93090_MB00) += arch/frv/mb93090-mb00/
all: Image
Image: vmlinux
$(Q)$(MAKE) $(build)=arch/frv/boot $@
archclean:
$(Q)$(MAKE) $(clean)=arch/frv/boot

76
arch/frv/boot/Makefile
View File

@ -1,76 +0,0 @@
#
# arch/arm/boot/Makefile
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1995-2000 Russell King
#
targets := Image zImage bootpImage
SYSTEM =$(LINUX)
ZTEXTADDR = 0x02080000
PARAMS_PHYS = 0x0207c000
INITRD_PHYS = 0x02180000
INITRD_VIRT = 0x02180000
OBJCOPYFLAGS :=-O binary -R .note -R .note.gnu.build-id -R .comment
#
# If you don't define ZRELADDR above,
# then it defaults to ZTEXTADDR
#
ifeq ($(ZRELADDR),)
ZRELADDR = $(ZTEXTADDR)
endif
export SYSTEM ZTEXTADDR ZBSSADDR ZRELADDR INITRD_PHYS INITRD_VIRT PARAMS_PHYS
Image: $(obj)/Image
targets: $(obj)/Image
$(obj)/Image: vmlinux FORCE
$(OBJCOPY) $(OBJCOPYFLAGS) -S vmlinux $@
#$(obj)/Image: $(CONFIGURE) $(SYSTEM)
# $(OBJCOPY) $(OBJCOPYFLAGS) -g -S $(SYSTEM) $@
bzImage: zImage
zImage: $(CONFIGURE) compressed/$(LINUX)
$(OBJCOPY) $(OBJCOPYFLAGS) -S compressed/$(LINUX) $@
bootpImage: bootp/bootp
$(OBJCOPY) $(OBJCOPYFLAGS) -S bootp/bootp $@
compressed/$(LINUX): $(LINUX) dep
@$(MAKE) -C compressed $(LINUX)
bootp/bootp: zImage initrd
@$(MAKE) -C bootp bootp
initrd:
@test "$(INITRD_VIRT)" != "" || (echo This architecture does not support INITRD; exit -1)
@test "$(INITRD)" != "" || (echo You must specify INITRD; exit -1)
#
# installation
#
install: $(CONFIGURE) Image
sh ./install.sh $(KERNELRELEASE) Image System.map "$(INSTALL_PATH)"
zinstall: $(CONFIGURE) zImage
sh ./install.sh $(KERNELRELEASE) zImage System.map "$(INSTALL_PATH)"
#
# miscellany
#
mrproper clean:
# @$(MAKE) -C compressed clean
# @$(MAKE) -C bootp clean
dep:

39
arch/frv/defconfig
View File

@ -1,39 +0,0 @@
CONFIG_EXPERIMENTAL=y
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
CONFIG_LOG_BUF_SHIFT=14
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_EXPERT=y
# CONFIG_HOTPLUG is not set
CONFIG_MMU=y
CONFIG_FRV_OUTOFLINE_ATOMIC_OPS=y
CONFIG_FRV_DEFL_CACHE_WTHRU=y
CONFIG_GPREL_DATA_4=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_PNP=y
# CONFIG_IPV6 is not set
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
CONFIG_NETDEVICES=y
CONFIG_NET_ETHERNET=y
CONFIG_MII=y
CONFIG_NET_PCI=y
CONFIG_NE2K_PCI=y
# CONFIG_INPUT is not set
# CONFIG_SERIO is not set
# CONFIG_VT is not set
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=1
CONFIG_SERIAL_8250_RUNTIME_UARTS=1
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_SHARE_IRQ=y
# CONFIG_LEGACY_PTYS is not set
CONFIG_TMPFS=y
CONFIG_NFS_FS=y
CONFIG_ROOT_NFS=y
CONFIG_DEBUG_KERNEL=y
# CONFIG_DEBUG_BUGVERBOSE is not set
CONFIG_DEBUG_STACKOVERFLOW=y

12
arch/frv/include/asm/Kbuild
View File

@ -1,12 +0,0 @@
generic-y += device.h
generic-y += exec.h
generic-y += extable.h
generic-y += fb.h
generic-y += irq_work.h
generic-y += mcs_spinlock.h
generic-y += mm-arch-hooks.h
generic-y += preempt.h
generic-y += trace_clock.h
generic-y += word-at-a-time.h
generic-y += kprobes.h

1
arch/frv/include/asm/asm-offsets.h
View File

@ -1 +0,0 @@
#include <generated/asm-offsets.h>

224
arch/frv/include/asm/atomic.h
View File

@ -1,224 +0,0 @@
/* atomic.h: atomic operation emulation for FR-V
*
* For an explanation of how atomic ops work in this arch, see:
* Documentation/frv/atomic-ops.txt
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_ATOMIC_H
#define _ASM_ATOMIC_H
#include <linux/types.h>
#include <asm/cmpxchg.h>
#include <asm/barrier.h>
#ifdef CONFIG_SMP
#error not SMP safe
#endif
#include <asm/atomic_defs.h>
/*
* Atomic operations that C can't guarantee us. Useful for
* resource counting etc..
*
* We do not have SMP systems, so we don't have to deal with that.
*/
#define ATOMIC_INIT(i) { (i) }
#define atomic_read(v) READ_ONCE((v)->counter)
#define atomic_set(v, i) WRITE_ONCE(((v)->counter), (i))
static inline int atomic_inc_return(atomic_t *v)
{
return __atomic_add_return(1, &v->counter);
}
static inline int atomic_dec_return(atomic_t *v)
{
return __atomic_sub_return(1, &v->counter);
}
static inline int atomic_add_return(int i, atomic_t *v)
{
return __atomic_add_return(i, &v->counter);
}
static inline int atomic_sub_return(int i, atomic_t *v)
{
return __atomic_sub_return(i, &v->counter);
}
static inline int atomic_add_negative(int i, atomic_t *v)
{
return atomic_add_return(i, v) < 0;
}
static inline void atomic_inc(atomic_t *v)
{
atomic_inc_return(v);
}
static inline void atomic_dec(atomic_t *v)
{
atomic_dec_return(v);
}
#define atomic_sub_and_test(i,v) (atomic_sub_return((i), (v)) == 0)
#define atomic_dec_and_test(v) (atomic_sub_return(1, (v)) == 0)
#define atomic_inc_and_test(v) (atomic_add_return(1, (v)) == 0)
/*
* 64-bit atomic ops
*/
typedef struct {
long long counter;
} atomic64_t;
#define ATOMIC64_INIT(i) { (i) }
static inline long long atomic64_read(const atomic64_t *v)
{
long long counter;
asm("ldd%I1 %M1,%0"
: "=e"(counter)
: "m"(v->counter));
return counter;
}
static inline void atomic64_set(atomic64_t *v, long long i)
{
asm volatile("std%I0 %1,%M0"
: "=m"(v->counter)
: "e"(i));
}
static inline long long atomic64_inc_return(atomic64_t *v)
{
return __atomic64_add_return(1, &v->counter);
}
static inline long long atomic64_dec_return(atomic64_t *v)
{
return __atomic64_sub_return(1, &v->counter);
}
static inline long long atomic64_add_return(long long i, atomic64_t *v)
{
return __atomic64_add_return(i, &v->counter);
}
static inline long long atomic64_sub_return(long long i, atomic64_t *v)
{
return __atomic64_sub_return(i, &v->counter);
}
static inline long long atomic64_add_negative(long long i, atomic64_t *v)
{
return atomic64_add_return(i, v) < 0;
}
static inline void atomic64_inc(atomic64_t *v)
{
atomic64_inc_return(v);
}
static inline void atomic64_dec(atomic64_t *v)
{
atomic64_dec_return(v);
}
#define atomic64_sub_and_test(i,v) (atomic64_sub_return((i), (v)) == 0)
#define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0)
#define atomic64_inc_and_test(v) (atomic64_inc_return((v)) == 0)
#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
#define atomic_cmpxchg(v, old, new) (cmpxchg(&(v)->counter, old, new))
#define atomic_xchg(v, new) (xchg(&(v)->counter, new))
#define atomic64_cmpxchg(v, old, new) (__cmpxchg_64(old, new, &(v)->counter))
#define atomic64_xchg(v, new) (__xchg_64(new, &(v)->counter))
static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
{
int c, old;
c = atomic_read(v);
for (;;) {
if (unlikely(c == (u)))
break;
old = atomic_cmpxchg((v), c, c + (a));
if (likely(old == c))
break;
c = old;
}
return c;
}
static inline int atomic64_add_unless(atomic64_t *v, long long i, long long u)
{
long long c, old;
c = atomic64_read(v);
for (;;) {
if (unlikely(c == u))
break;
old = atomic64_cmpxchg(v, c, c + i);
if (likely(old == c))
break;
c = old;
}
return c != u;
}
static inline long long atomic64_dec_if_positive(atomic64_t *v)
{
long long c, old, dec;
c = atomic64_read(v);
for (;;) {
dec = c - 1;
if (unlikely(dec < 0))
break;
old = atomic64_cmpxchg((v), c, dec);
if (likely(old == c))
break;
c = old;
}
return dec;
}
#define ATOMIC_OP(op) \
static inline int atomic_fetch_##op(int i, atomic_t *v) \
{ \
return __atomic32_fetch_##op(i, &v->counter); \
} \
static inline void atomic_##op(int i, atomic_t *v) \
{ \
(void)__atomic32_fetch_##op(i, &v->counter); \
} \
\
static inline long long atomic64_fetch_##op(long long i, atomic64_t *v) \
{ \
return __atomic64_fetch_##op(i, &v->counter); \
} \
static inline void atomic64_##op(long long i, atomic64_t *v) \
{ \
(void)__atomic64_fetch_##op(i, &v->counter); \
}
ATOMIC_OP(or)
ATOMIC_OP(and)
ATOMIC_OP(xor)
ATOMIC_OP(add)
ATOMIC_OP(sub)
#undef ATOMIC_OP
#endif /* _ASM_ATOMIC_H */

175
arch/frv/include/asm/atomic_defs.h
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@ -1,175 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#include <asm/spr-regs.h>
#ifdef __ATOMIC_LIB__
#ifdef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
#define ATOMIC_QUALS
#define ATOMIC_EXPORT(x) EXPORT_SYMBOL(x)
#else /* !OUTOFLINE && LIB */
#define ATOMIC_OP_RETURN(op)
#define ATOMIC_FETCH_OP(op)
#endif /* OUTOFLINE */
#else /* !__ATOMIC_LIB__ */
#define ATOMIC_EXPORT(x)
#ifdef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
#define ATOMIC_OP_RETURN(op) \
extern int __atomic_##op##_return(int i, int *v); \
extern long long __atomic64_##op##_return(long long i, long long *v);
#define ATOMIC_FETCH_OP(op) \
extern int __atomic32_fetch_##op(int i, int *v); \
extern long long __atomic64_fetch_##op(long long i, long long *v);
#else /* !OUTOFLINE && !LIB */
#define ATOMIC_QUALS static inline
#endif /* OUTOFLINE */
#endif /* __ATOMIC_LIB__ */
/*
* Note on the 64 bit inline asm variants...
*
* CSTD is a conditional instruction and needs a constrained memory reference.
* Normally 'U' provides the correct constraints for conditional instructions
* and this is used for the 32 bit version, however 'U' does not appear to work
* for 64 bit values (gcc-4.9)
*
* The exact constraint is that conditional instructions cannot deal with an
* immediate displacement in the memory reference, so what we do is we read the
* address through a volatile cast into a local variable in order to insure we
* _have_ to compute the correct address without displacement. This allows us
* to use the regular 'm' for the memory address.
*
* Furthermore, the %Ln operand, which prints the low word register (r+1),
* really only works for registers, this means we cannot allow immediate values
* for the 64 bit versions -- like we do for the 32 bit ones.
*
*/
#ifndef ATOMIC_OP_RETURN
#define ATOMIC_OP_RETURN(op) \
ATOMIC_QUALS int __atomic_##op##_return(int i, int *v) \
{ \
int val; \
\
asm volatile( \
"0: \n" \
" orcc gr0,gr0,gr0,icc3 \n" \
" ckeq icc3,cc7 \n" \
" ld.p %M0,%1 \n" \
" orcr cc7,cc7,cc3 \n" \
" "#op"%I2 %1,%2,%1 \n" \
" cst.p %1,%M0 ,cc3,#1 \n" \
" corcc gr29,gr29,gr0 ,cc3,#1 \n" \
" beq icc3,#0,0b \n" \
: "+U"(*v), "=&r"(val) \
: "NPr"(i) \
: "memory", "cc7", "cc3", "icc3" \
); \
\
return val; \
} \
ATOMIC_EXPORT(__atomic_##op##_return); \
\
ATOMIC_QUALS long long __atomic64_##op##_return(long long i, long long *v) \
{ \
long long *__v = READ_ONCE(v); \
long long val; \
\
asm volatile( \
"0: \n" \
" orcc gr0,gr0,gr0,icc3 \n" \
" ckeq icc3,cc7 \n" \
" ldd.p %M0,%1 \n" \
" orcr cc7,cc7,cc3 \n" \
" "#op"cc %L1,%L2,%L1,icc0 \n" \
" "#op"x %1,%2,%1,icc0 \n" \
" cstd.p %1,%M0 ,cc3,#1 \n" \
" corcc gr29,gr29,gr0 ,cc3,#1 \n" \
" beq icc3,#0,0b \n" \
: "+m"(*__v), "=&e"(val) \
: "e"(i) \
: "memory", "cc7", "cc3", "icc0", "icc3" \
); \
\
return val; \
} \
ATOMIC_EXPORT(__atomic64_##op##_return);
#endif
#ifndef ATOMIC_FETCH_OP
#define ATOMIC_FETCH_OP(op) \
ATOMIC_QUALS int __atomic32_fetch_##op(int i, int *v) \
{ \
int old, tmp; \
\
asm volatile( \
"0: \n" \
" orcc gr0,gr0,gr0,icc3 \n" \
" ckeq icc3,cc7 \n" \
" ld.p %M0,%1 \n" \
" orcr cc7,cc7,cc3 \n" \
" "#op"%I3 %1,%3,%2 \n" \
" cst.p %2,%M0 ,cc3,#1 \n" \
" corcc gr29,gr29,gr0 ,cc3,#1 \n" \
" beq icc3,#0,0b \n" \
: "+U"(*v), "=&r"(old), "=r"(tmp) \
: "NPr"(i) \
: "memory", "cc7", "cc3", "icc3" \
); \
\
return old; \
} \
ATOMIC_EXPORT(__atomic32_fetch_##op); \
\
ATOMIC_QUALS long long __atomic64_fetch_##op(long long i, long long *v) \
{ \
long long *__v = READ_ONCE(v); \
long long old, tmp; \
\
asm volatile( \
"0: \n" \
" orcc gr0,gr0,gr0,icc3 \n" \
" ckeq icc3,cc7 \n" \
" ldd.p %M0,%1 \n" \
" orcr cc7,cc7,cc3 \n" \
" "#op" %L1,%L3,%L2 \n" \
" "#op" %1,%3,%2 \n" \
" cstd.p %2,%M0 ,cc3,#1 \n" \
" corcc gr29,gr29,gr0 ,cc3,#1 \n" \
" beq icc3,#0,0b \n" \
: "+m"(*__v), "=&e"(old), "=e"(tmp) \
: "e"(i) \
: "memory", "cc7", "cc3", "icc3" \
); \
\
return old; \
} \
ATOMIC_EXPORT(__atomic64_fetch_##op);
#endif
ATOMIC_FETCH_OP(or)
ATOMIC_FETCH_OP(and)
ATOMIC_FETCH_OP(xor)
ATOMIC_FETCH_OP(add)
ATOMIC_FETCH_OP(sub)
ATOMIC_OP_RETURN(add)
ATOMIC_OP_RETURN(sub)
#undef ATOMIC_FETCH_OP
#undef ATOMIC_OP_RETURN
#undef ATOMIC_QUALS
#undef ATOMIC_EXPORT

22
arch/frv/include/asm/ax88796.h
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/* ax88796.h: access points to the driver for the AX88796 NE2000 clone
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_AX88796_H
#define _ASM_AX88796_H
#include <asm/mb-regs.h>
#define AX88796_IOADDR (__region_CS1 + 0x200)
#define AX88796_IRQ IRQ_CPU_EXTERNAL7
#define AX88796_FULL_DUPLEX 0 /* force full duplex */
#define AX88796_BUS_INFO "CS1#+0x200" /* bus info for ethtool */
#endif /* _ASM_AX88796_H */

23
arch/frv/include/asm/barrier.h
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@ -1,23 +0,0 @@
/* FR-V CPU memory barrier definitions
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_BARRIER_H
#define _ASM_BARRIER_H
#define nop() asm volatile ("nop"::)
#define mb() asm volatile ("membar" : : :"memory")
#define rmb() asm volatile ("membar" : : :"memory")
#define wmb() asm volatile ("membar" : : :"memory")
#include <asm-generic/barrier.h>
#endif /* _ASM_BARRIER_H */

325
arch/frv/include/asm/bitops.h
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/* bitops.h: bit operations for the Fujitsu FR-V CPUs
*
* For an explanation of how atomic ops work in this arch, see:
* Documentation/frv/atomic-ops.txt
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_BITOPS_H
#define _ASM_BITOPS_H
#include <linux/compiler.h>
#include <asm/byteorder.h>
#ifdef __KERNEL__
#ifndef _LINUX_BITOPS_H
#error only <linux/bitops.h> can be included directly
#endif
#include <asm-generic/bitops/ffz.h>
#include <asm/atomic.h>
static inline int test_and_clear_bit(unsigned long nr, volatile void *addr)
{
unsigned int *ptr = (void *)addr;
unsigned int mask = 1UL << (nr & 31);
ptr += nr >> 5;
return (__atomic32_fetch_and(~mask, ptr) & mask) != 0;
}
static inline int test_and_set_bit(unsigned long nr, volatile void *addr)
{
unsigned int *ptr = (void *)addr;
unsigned int mask = 1UL << (nr & 31);
ptr += nr >> 5;
return (__atomic32_fetch_or(mask, ptr) & mask) != 0;
}
static inline int test_and_change_bit(unsigned long nr, volatile void *addr)
{
unsigned int *ptr = (void *)addr;
unsigned int mask = 1UL << (nr & 31);
ptr += nr >> 5;
return (__atomic32_fetch_xor(mask, ptr) & mask) != 0;
}
static inline void clear_bit(unsigned long nr, volatile void *addr)
{
test_and_clear_bit(nr, addr);
}
static inline void set_bit(unsigned long nr, volatile void *addr)
{
test_and_set_bit(nr, addr);
}
static inline void change_bit(unsigned long nr, volatile void *addr)
{
test_and_change_bit(nr, addr);
}
static inline void __clear_bit(unsigned long nr, volatile void *addr)
{
volatile unsigned long *a = addr;
int mask;
a += nr >> 5;
mask = 1 << (nr & 31);
*a &= ~mask;
}
static inline void __set_bit(unsigned long nr, volatile void *addr)
{
volatile unsigned long *a = addr;
int mask;
a += nr >> 5;
mask = 1 << (nr & 31);
*a |= mask;
}
static inline void __change_bit(unsigned long nr, volatile void *addr)
{
volatile unsigned long *a = addr;
int mask;
a += nr >> 5;
mask = 1 << (nr & 31);
*a ^= mask;
}
static inline int __test_and_clear_bit(unsigned long nr, volatile void *addr)
{
volatile unsigned long *a = addr;
int mask, retval;
a += nr >> 5;
mask = 1 << (nr & 31);
retval = (mask & *a) != 0;
*a &= ~mask;
return retval;
}
static inline int __test_and_set_bit(unsigned long nr, volatile void *addr)
{
volatile unsigned long *a = addr;
int mask, retval;
a += nr >> 5;
mask = 1 << (nr & 31);
retval = (mask & *a) != 0;
*a |= mask;
return retval;
}
static inline int __test_and_change_bit(unsigned long nr, volatile void *addr)
{
volatile unsigned long *a = addr;
int mask, retval;
a += nr >> 5;
mask = 1 << (nr & 31);
retval = (mask & *a) != 0;
*a ^= mask;
return retval;
}
/*
* This routine doesn't need to be atomic.
*/
static inline int
__constant_test_bit(unsigned long nr, const volatile void *addr)
{
return ((1UL << (nr & 31)) & (((const volatile unsigned int *) addr)[nr >> 5])) != 0;
}
static inline int __test_bit(unsigned long nr, const volatile void *addr)
{
int * a = (int *) addr;
int mask;
a += nr >> 5;
mask = 1 << (nr & 0x1f);
return ((mask & *a) != 0);
}
#define test_bit(nr,addr) \
(__builtin_constant_p(nr) ? \
__constant_test_bit((nr),(addr)) : \
__test_bit((nr),(addr)))
#include <asm-generic/bitops/find.h>
/**
* fls - find last bit set
* @x: the word to search
*
* This is defined the same way as ffs:
* - return 32..1 to indicate bit 31..0 most significant bit set
* - return 0 to indicate no bits set
*/
#define fls(x) \
({ \
int bit; \
\
asm(" subcc %1,gr0,gr0,icc0 \n" \
" ckne icc0,cc4 \n" \
" cscan.p %1,gr0,%0 ,cc4,#1 \n" \
" csub %0,%0,%0 ,cc4,#0 \n" \
" csub %2,%0,%0 ,cc4,#1 \n" \
: "=&r"(bit) \
: "r"(x), "r"(32) \
: "icc0", "cc4" \
); \
\
bit; \
})
/**
* fls64 - find last bit set in a 64-bit value
* @n: the value to search
*
* This is defined the same way as ffs:
* - return 64..1 to indicate bit 63..0 most significant bit set
* - return 0 to indicate no bits set
*/
static inline __attribute__((const))
int fls64(u64 n)
{
union {
u64 ll;
struct { u32 h, l; };
} _;
int bit, x, y;
_.ll = n;
asm(" subcc.p %3,gr0,gr0,icc0 \n"
" subcc %4,gr0,gr0,icc1 \n"
" ckne icc0,cc4 \n"
" ckne icc1,cc5 \n"
" norcr cc4,cc5,cc6 \n"
" csub.p %0,%0,%0 ,cc6,1 \n"
" orcr cc5,cc4,cc4 \n"
" andcr cc4,cc5,cc4 \n"
" cscan.p %3,gr0,%0 ,cc4,0 \n"
" setlos #64,%1 \n"
" cscan.p %4,gr0,%0 ,cc4,1 \n"
" setlos #32,%2 \n"
" csub.p %1,%0,%0 ,cc4,0 \n"
" csub %2,%0,%0 ,cc4,1 \n"
: "=&r"(bit), "=r"(x), "=r"(y)
: "0r"(_.h), "r"(_.l)
: "icc0", "icc1", "cc4", "cc5", "cc6"
);
return bit;
}
/**
* ffs - find first bit set
* @x: the word to search
*
* - return 32..1 to indicate bit 31..0 most least significant bit set
* - return 0 to indicate no bits set
*/
static inline __attribute__((const))
int ffs(int x)
{
/* Note: (x & -x) gives us a mask that is the least significant
* (rightmost) 1-bit of the value in x.
*/
return fls(x & -x);
}
/**
* __ffs - find first bit set
* @x: the word to search
*
* - return 31..0 to indicate bit 31..0 most least significant bit set
* - if no bits are set in x, the result is undefined
*/
static inline __attribute__((const))
int __ffs(unsigned long x)
{
int bit;
asm("scan %1,gr0,%0" : "=r"(bit) : "r"(x & -x));
return 31 - bit;
}
/**
* __fls - find last (most-significant) set bit in a long word
* @word: the word to search
*
* Undefined if no set bit exists, so code should check against 0 first.
*/
static inline unsigned long __fls(unsigned long word)
{
unsigned long bit;
asm("scan %1,gr0,%0" : "=r"(bit) : "r"(word));
return bit;
}
/*
* special slimline version of fls() for calculating ilog2_u32()
* - note: no protection against n == 0
*/
#define ARCH_HAS_ILOG2_U32
static inline __attribute__((const))
int __ilog2_u32(u32 n)
{
int bit;
asm("scan %1,gr0,%0" : "=r"(bit) : "r"(n));
return 31 - bit;
}
/*
* special slimline version of fls64() for calculating ilog2_u64()
* - note: no protection against n == 0
*/
#define ARCH_HAS_ILOG2_U64
static inline __attribute__((const))
int __ilog2_u64(u64 n)
{
union {
u64 ll;
struct { u32 h, l; };
} _;
int bit, x, y;
_.ll = n;
asm(" subcc %3,gr0,gr0,icc0 \n"
" ckeq icc0,cc4 \n"
" cscan.p %3,gr0,%0 ,cc4,0 \n"
" setlos #63,%1 \n"
" cscan.p %4,gr0,%0 ,cc4,1 \n"
" setlos #31,%2 \n"
" csub.p %1,%0,%0 ,cc4,0 \n"
" csub %2,%0,%0 ,cc4,1 \n"
: "=&r"(bit), "=r"(x), "=r"(y)
: "0r"(_.h), "r"(_.l)
: "icc0", "cc4"
);
return bit;
}
#include <asm-generic/bitops/sched.h>
#include <asm-generic/bitops/hweight.h>
#include <asm-generic/bitops/lock.h>
#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/ext2-atomic-setbit.h>
#endif /* __KERNEL__ */
#endif /* _ASM_BITOPS_H */

56
arch/frv/include/asm/bug.h
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@ -1,56 +0,0 @@
/* bug.h: FRV bug trapping
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_BUG_H
#define _ASM_BUG_H
#include <linux/linkage.h>
#ifdef CONFIG_BUG
/*
* Tell the user there is some problem.
*/
extern asmlinkage void __debug_bug_trap(int signr);
#ifdef CONFIG_NO_KERNEL_MSG
#define _debug_bug_printk()
#else
extern void __debug_bug_printk(const char *file, unsigned line);
#define _debug_bug_printk() __debug_bug_printk(__FILE__, __LINE__)
#endif
#define _debug_bug_trap(signr) \
do { \
__debug_bug_trap(signr); \
asm volatile("nop"); \
} while(1)
#define HAVE_ARCH_BUG
#define BUG() \
do { \
_debug_bug_printk(); \
_debug_bug_trap(6 /*SIGABRT*/); \
} while (0)
#ifdef CONFIG_GDBSTUB
#define HAVE_ARCH_KGDB_RAISE
#define kgdb_raise(signr) do { _debug_bug_trap(signr); } while(0)
#define HAVE_ARCH_KGDB_BAD_PAGE
#define kgdb_bad_page(page) do { kgdb_raise(SIGABRT); } while(0)
#endif
#endif /* CONFIG_BUG */
#include <asm-generic/bug.h>
extern void die_if_kernel(const char *, ...) __attribute__((format(printf, 1, 2)));
#endif

14
arch/frv/include/asm/bugs.h
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@ -1,14 +0,0 @@
/* bugs.h: arch bug checking entry
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
static inline void check_bugs(void)
{
}

41
arch/frv/include/asm/busctl-regs.h
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@ -1,41 +0,0 @@
/* busctl-regs.h: FR400-series CPU bus controller registers
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_BUSCTL_REGS_H
#define _ASM_BUSCTL_REGS_H
/* bus controller registers */
#define __get_LGCR() ({ *(volatile unsigned long *)(0xfe000010); })
#define __get_LMAICR() ({ *(volatile unsigned long *)(0xfe000030); })
#define __get_LEMBR() ({ *(volatile unsigned long *)(0xfe000040); })
#define __get_LEMAM() ({ *(volatile unsigned long *)(0xfe000048); })
#define __get_LCR(R) ({ *(volatile unsigned long *)(0xfe000100 + 8*(R)); })
#define __get_LSBR(R) ({ *(volatile unsigned long *)(0xfe000c00 + 8*(R)); })
#define __get_LSAM(R) ({ *(volatile unsigned long *)(0xfe000d00 + 8*(R)); })
#define __set_LGCR(V) do { *(volatile unsigned long *)(0xfe000010) = (V); } while(0)
#define __set_LMAICR(V) do { *(volatile unsigned long *)(0xfe000030) = (V); } while(0)
#define __set_LEMBR(V) do { *(volatile unsigned long *)(0xfe000040) = (V); } while(0)
#define __set_LEMAM(V) do { *(volatile unsigned long *)(0xfe000048) = (V); } while(0)
#define __set_LCR(R,V) do { *(volatile unsigned long *)(0xfe000100 + 8*(R)) = (V); } while(0)
#define __set_LSBR(R,V) do { *(volatile unsigned long *)(0xfe000c00 + 8*(R)) = (V); } while(0)
#define __set_LSAM(R,V) do { *(volatile unsigned long *)(0xfe000d00 + 8*(R)) = (V); } while(0)
/* FR401 SDRAM controller registers */
#define __get_DBR(R) ({ *(volatile unsigned long *)(0xfe000e00 + 8*(R)); })
#define __get_DAM(R) ({ *(volatile unsigned long *)(0xfe000f00 + 8*(R)); })
/* FR551 SDRAM controller registers */
#define __get_DARS(R) ({ *(volatile unsigned long *)(0xfeff0100 + 8*(R)); })
#define __get_DAMK(R) ({ *(volatile unsigned long *)(0xfeff0110 + 8*(R)); })
#endif /* _ASM_BUSCTL_REGS_H */

23
arch/frv/include/asm/cache.h
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@ -1,23 +0,0 @@
/* cache.h: FRV cache definitions
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef __ASM_CACHE_H
#define __ASM_CACHE_H
/* bytes per L1 cache line */
#define L1_CACHE_SHIFT (CONFIG_FRV_L1_CACHE_SHIFT)
#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
#define __cacheline_aligned __attribute__((aligned(L1_CACHE_BYTES)))
#define ____cacheline_aligned __attribute__((aligned(L1_CACHE_BYTES)))
#endif

105
arch/frv/include/asm/cacheflush.h
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@ -1,105 +0,0 @@
/* cacheflush.h: FRV cache flushing routines
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_CACHEFLUSH_H
#define _ASM_CACHEFLUSH_H
/* Keep includes the same across arches. */
#include <linux/mm.h>
/*
* virtually-indexed cache management (our cache is physically indexed)
*/
#define flush_cache_all() do {} while(0)
#define flush_cache_mm(mm) do {} while(0)
#define flush_cache_dup_mm(mm) do {} while(0)
#define flush_cache_range(mm, start, end) do {} while(0)
#define flush_cache_page(vma, vmaddr, pfn) do {} while(0)
#define flush_cache_vmap(start, end) do {} while(0)
#define flush_cache_vunmap(start, end) do {} while(0)
#define flush_dcache_mmap_lock(mapping) do {} while(0)
#define flush_dcache_mmap_unlock(mapping) do {} while(0)
/*
* physically-indexed cache management
* - see arch/frv/lib/cache.S
*/
extern void frv_dcache_writeback(unsigned long start, unsigned long size);
extern void frv_cache_invalidate(unsigned long start, unsigned long size);
extern void frv_icache_invalidate(unsigned long start, unsigned long size);
extern void frv_cache_wback_inv(unsigned long start, unsigned long size);
static inline void __flush_cache_all(void)
{
asm volatile(" dcef @(gr0,gr0),#1 \n"
" icei @(gr0,gr0),#1 \n"
" membar \n"
: : : "memory"
);
}
/* dcache/icache coherency... */
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
#ifdef CONFIG_MMU
extern void flush_dcache_page(struct page *page);
#else
static inline void flush_dcache_page(struct page *page)
{
unsigned long addr = page_to_phys(page);
frv_dcache_writeback(addr, addr + PAGE_SIZE);
}
#endif
static inline void flush_page_to_ram(struct page *page)
{
flush_dcache_page(page);
}
static inline void flush_icache(void)
{
__flush_cache_all();
}
static inline void flush_icache_range(unsigned long start, unsigned long end)
{
frv_cache_wback_inv(start, end);
}
#ifdef CONFIG_MMU
extern void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
unsigned long start, unsigned long len);
#else
static inline void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
unsigned long start, unsigned long len)
{
frv_cache_wback_inv(start, start + len);
}
#endif
static inline void flush_icache_page(struct vm_area_struct *vma, struct page *page)
{
flush_icache_user_range(vma, page, page_to_phys(page), PAGE_SIZE);
}
/*
* permit ptrace to access another process's address space through the icache
* and the dcache
*/
#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
do { \
memcpy((dst), (src), (len)); \
flush_icache_user_range((vma), (page), (vaddr), (len)); \
} while(0)
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
memcpy((dst), (src), (len))
#endif /* _ASM_CACHEFLUSH_H */

180
arch/frv/include/asm/checksum.h
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@ -1,180 +0,0 @@
/* checksum.h: FRV checksumming
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_CHECKSUM_H
#define _ASM_CHECKSUM_H
#include <linux/in6.h>
/*
* computes the checksum of a memory block at buff, length len,
* and adds in "sum" (32-bit)
*
* returns a 32-bit number suitable for feeding into itself
* or csum_tcpudp_magic
*
* this function must be called with even lengths, except
* for the last fragment, which may be odd
*
* it's best to have buff aligned on a 32-bit boundary
*/
__wsum csum_partial(const void *buff, int len, __wsum sum);
/*
* the same as csum_partial, but copies from src while it
* checksums
*
* here even more important to align src and dst on a 32-bit (or even
* better 64-bit) boundary
*/
__wsum csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum);
/*
* the same as csum_partial_copy, but copies from user space.
*
* here even more important to align src and dst on a 32-bit (or even
* better 64-bit) boundary
*/
extern __wsum csum_partial_copy_from_user(const void __user *src, void *dst,
int len, __wsum sum, int *csum_err);
/*
* This is a version of ip_compute_csum() optimized for IP headers,
* which always checksum on 4 octet boundaries.
*
*/
static inline
__sum16 ip_fast_csum(const void *iph, unsigned int ihl)
{
unsigned int tmp, inc, sum = 0;
asm(" addcc gr0,gr0,gr0,icc0\n" /* clear icc0.C */
" subi %1,#4,%1 \n"
"0: \n"
" ldu.p @(%1,%3),%4 \n"
" subicc %2,#1,%2,icc1 \n"
" addxcc.p %4,%0,%0,icc0 \n"
" bhi icc1,#2,0b \n"
/* fold the 33-bit result into 16-bits */
" addxcc gr0,%0,%0,icc0 \n"
" srli %0,#16,%1 \n"
" sethi #0,%0 \n"
" add %1,%0,%0 \n"
" srli %0,#16,%1 \n"
" add %1,%0,%0 \n"
: "=r" (sum), "=r" (iph), "=r" (ihl), "=r" (inc), "=&r"(tmp)
: "0" (sum), "1" (iph), "2" (ihl), "3" (4),
"m"(*(volatile struct { int _[100]; } *)iph)
: "icc0", "icc1", "memory"
);
return (__force __sum16)~sum;
}
/*
* Fold a partial checksum
*/
static inline __sum16 csum_fold(__wsum sum)
{
unsigned int tmp;
asm(" srli %0,#16,%1 \n"
" sethi #0,%0 \n"
" add %1,%0,%0 \n"
" srli %0,#16,%1 \n"
" add %1,%0,%0 \n"
: "=r"(sum), "=&r"(tmp)
: "0"(sum)
);
return (__force __sum16)~sum;
}
/*
* computes the checksum of the TCP/UDP pseudo-header
* returns a 16-bit checksum, already complemented
*/
static inline __wsum
csum_tcpudp_nofold(__be32 saddr, __be32 daddr, __u32 len,
__u8 proto, __wsum sum)
{
asm(" addcc %1,%0,%0,icc0 \n"
" addxcc %2,%0,%0,icc0 \n"
" addxcc %3,%0,%0,icc0 \n"
" addxcc gr0,%0,%0,icc0 \n"
: "=r" (sum)
: "r" (daddr), "r" (saddr), "r" (len + proto), "0"(sum)
: "icc0"
);
return sum;
}
static inline __sum16
csum_tcpudp_magic(__be32 saddr, __be32 daddr, __u32 len,
__u8 proto, __wsum sum)
{
return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum));
}
/*
* this routine is used for miscellaneous IP-like checksums, mainly
* in icmp.c
*/
extern __sum16 ip_compute_csum(const void *buff, int len);
#define _HAVE_ARCH_IPV6_CSUM
static inline __sum16
csum_ipv6_magic(const struct in6_addr *saddr, const struct in6_addr *daddr,
__u32 len, __u8 proto, __wsum sum)
{
unsigned long tmp, tmp2;
asm(" addcc %2,%0,%0,icc0 \n"
/* add up the source addr */
" ldi @(%3,0),%1 \n"
" addxcc %1,%0,%0,icc0 \n"
" ldi @(%3,4),%2 \n"
" addxcc %2,%0,%0,icc0 \n"
" ldi @(%3,8),%1 \n"
" addxcc %1,%0,%0,icc0 \n"
" ldi @(%3,12),%2 \n"
" addxcc %2,%0,%0,icc0 \n"
/* add up the dest addr */
" ldi @(%4,0),%1 \n"
" addxcc %1,%0,%0,icc0 \n"
" ldi @(%4,4),%2 \n"
" addxcc %2,%0,%0,icc0 \n"
" ldi @(%4,8),%1 \n"
" addxcc %1,%0,%0,icc0 \n"
" ldi @(%4,12),%2 \n"
" addxcc %2,%0,%0,icc0 \n"
/* fold the 33-bit result into 16-bits */
" addxcc gr0,%0,%0,icc0 \n"
" srli %0,#16,%1 \n"
" sethi #0,%0 \n"
" add %1,%0,%0 \n"
" srli %0,#16,%1 \n"
" add %1,%0,%0 \n"
: "=r" (sum), "=&r" (tmp), "=r" (tmp2)
: "r" (saddr), "r" (daddr), "0" (sum), "2" (len + proto)
: "icc0"
);
return (__force __sum16)~sum;
}
#endif /* _ASM_CHECKSUM_H */

171
arch/frv/include/asm/cmpxchg.h
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@ -1,171 +0,0 @@
/* xchg and cmpxchg operation emulation for FR-V
*
* For an explanation of how atomic ops work in this arch, see:
* Documentation/frv/atomic-ops.txt
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_CMPXCHG_H
#define _ASM_CMPXCHG_H
#include <linux/types.h>
/*****************************************************************************/
/*
* exchange value with memory
*/
extern uint64_t __xchg_64(uint64_t i, volatile void *v);
#ifndef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
#define xchg(ptr, x) \
({ \
__typeof__(ptr) __xg_ptr = (ptr); \
__typeof__(*(ptr)) __xg_orig; \
\
switch (sizeof(__xg_orig)) { \
case 4: \
asm volatile( \
"swap%I0 %M0,%1" \
: "+m"(*__xg_ptr), "=r"(__xg_orig) \
: "1"(x) \
: "memory" \
); \
break; \
\
default: \
__xg_orig = (__typeof__(__xg_orig))0; \
asm volatile("break"); \
break; \
} \
\
__xg_orig; \
})
#else
extern uint32_t __xchg_32(uint32_t i, volatile void *v);
#define xchg(ptr, x) \
({ \
__typeof__(ptr) __xg_ptr = (ptr); \
__typeof__(*(ptr)) __xg_orig; \
\
switch (sizeof(__xg_orig)) { \
case 4: __xg_orig = (__typeof__(*(ptr))) __xchg_32((uint32_t) x, __xg_ptr); break; \
default: \
__xg_orig = (__typeof__(__xg_orig))0; \
asm volatile("break"); \
break; \
} \
__xg_orig; \
})
#endif
/*****************************************************************************/
/*
* compare and conditionally exchange value with memory
* - if (*ptr == test) then orig = *ptr; *ptr = test;
* - if (*ptr != test) then orig = *ptr;
*/
extern uint64_t __cmpxchg_64(uint64_t test, uint64_t new, volatile uint64_t *v);
#define cmpxchg64(p, o, n) __cmpxchg_64((o), (n), (p))
#ifndef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
#define cmpxchg(ptr, test, new) \
({ \
__typeof__(ptr) __xg_ptr = (ptr); \
__typeof__(*(ptr)) __xg_orig, __xg_tmp; \
__typeof__(*(ptr)) __xg_test = (test); \
__typeof__(*(ptr)) __xg_new = (new); \
\
switch (sizeof(__xg_orig)) { \
case 4: \
asm volatile( \
"0: \n" \
" orcc gr0,gr0,gr0,icc3 \n" \
" ckeq icc3,cc7 \n" \
" ld.p %M0,%1 \n" \
" orcr cc7,cc7,cc3 \n" \
" sub%I4cc %1,%4,%2,icc0 \n" \
" bne icc0,#0,1f \n" \
" cst.p %3,%M0 ,cc3,#1 \n" \
" corcc gr29,gr29,gr0 ,cc3,#1 \n" \
" beq icc3,#0,0b \n" \
"1: \n" \
: "+U"(*__xg_ptr), "=&r"(__xg_orig), "=&r"(__xg_tmp) \
: "r"(__xg_new), "NPr"(__xg_test) \
: "memory", "cc7", "cc3", "icc3", "icc0" \
); \
break; \
\
default: \
__xg_orig = (__typeof__(__xg_orig))0; \
asm volatile("break"); \
break; \
} \
\
__xg_orig; \
})
#else
extern uint32_t __cmpxchg_32(uint32_t *v, uint32_t test, uint32_t new);
#define cmpxchg(ptr, test, new) \
({ \
__typeof__(ptr) __xg_ptr = (ptr); \
__typeof__(*(ptr)) __xg_orig; \
__typeof__(*(ptr)) __xg_test = (test); \
__typeof__(*(ptr)) __xg_new = (new); \
\
switch (sizeof(__xg_orig)) { \
case 4: __xg_orig = (__force __typeof__(*ptr)) \
__cmpxchg_32((__force uint32_t *)__xg_ptr, \
(__force uint32_t)__xg_test, \
(__force uint32_t)__xg_new); break; \
default: \
__xg_orig = (__typeof__(__xg_orig))0; \
asm volatile("break"); \
break; \
} \
\
__xg_orig; \
})
#endif
#include <asm-generic/cmpxchg-local.h>
static inline unsigned long __cmpxchg_local(volatile void *ptr,
unsigned long old,
unsigned long new, int size)
{
switch (size) {
case 4:
return cmpxchg((unsigned long *)ptr, old, new);
default:
return __cmpxchg_local_generic(ptr, old, new, size);
}
return old;
}
/*
* cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
* them available.
*/
#define cmpxchg_local(ptr, o, n) \
((__typeof__(*(ptr)))__cmpxchg_local((ptr), (unsigned long)(o), \
(unsigned long)(n), sizeof(*(ptr))))
#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
#endif /* _ASM_CMPXCHG_H */

81
arch/frv/include/asm/cpu-irqs.h
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@ -1,81 +0,0 @@
/* cpu-irqs.h: on-CPU peripheral irqs
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_CPU_IRQS_H
#define _ASM_CPU_IRQS_H
#ifndef __ASSEMBLY__
/* IRQ to level mappings */
#define IRQ_GDBSTUB_LEVEL 15
#define IRQ_UART_LEVEL 13
#ifdef CONFIG_GDBSTUB_UART0
#define IRQ_UART0_LEVEL IRQ_GDBSTUB_LEVEL
#else
#define IRQ_UART0_LEVEL IRQ_UART_LEVEL
#endif
#ifdef CONFIG_GDBSTUB_UART1
#define IRQ_UART1_LEVEL IRQ_GDBSTUB_LEVEL
#else
#define IRQ_UART1_LEVEL IRQ_UART_LEVEL
#endif
#define IRQ_DMA0_LEVEL 14
#define IRQ_DMA1_LEVEL 14
#define IRQ_DMA2_LEVEL 14
#define IRQ_DMA3_LEVEL 14
#define IRQ_DMA4_LEVEL 14
#define IRQ_DMA5_LEVEL 14
#define IRQ_DMA6_LEVEL 14
#define IRQ_DMA7_LEVEL 14
#define IRQ_TIMER0_LEVEL 12
#define IRQ_TIMER1_LEVEL 11
#define IRQ_TIMER2_LEVEL 10
#define IRQ_XIRQ0_LEVEL 1
#define IRQ_XIRQ1_LEVEL 2
#define IRQ_XIRQ2_LEVEL 3
#define IRQ_XIRQ3_LEVEL 4
#define IRQ_XIRQ4_LEVEL 5
#define IRQ_XIRQ5_LEVEL 6
#define IRQ_XIRQ6_LEVEL 7
#define IRQ_XIRQ7_LEVEL 8
/* IRQ IDs presented to drivers */
#define IRQ_CPU__UNUSED IRQ_BASE_CPU
#define IRQ_CPU_UART0 (IRQ_BASE_CPU + IRQ_UART0_LEVEL)
#define IRQ_CPU_UART1 (IRQ_BASE_CPU + IRQ_UART1_LEVEL)
#define IRQ_CPU_TIMER0 (IRQ_BASE_CPU + IRQ_TIMER0_LEVEL)
#define IRQ_CPU_TIMER1 (IRQ_BASE_CPU + IRQ_TIMER1_LEVEL)
#define IRQ_CPU_TIMER2 (IRQ_BASE_CPU + IRQ_TIMER2_LEVEL)
#define IRQ_CPU_DMA0 (IRQ_BASE_CPU + IRQ_DMA0_LEVEL)
#define IRQ_CPU_DMA1 (IRQ_BASE_CPU + IRQ_DMA1_LEVEL)
#define IRQ_CPU_DMA2 (IRQ_BASE_CPU + IRQ_DMA2_LEVEL)
#define IRQ_CPU_DMA3 (IRQ_BASE_CPU + IRQ_DMA3_LEVEL)
#define IRQ_CPU_DMA4 (IRQ_BASE_CPU + IRQ_DMA4_LEVEL)
#define IRQ_CPU_DMA5 (IRQ_BASE_CPU + IRQ_DMA5_LEVEL)
#define IRQ_CPU_DMA6 (IRQ_BASE_CPU + IRQ_DMA6_LEVEL)
#define IRQ_CPU_DMA7 (IRQ_BASE_CPU + IRQ_DMA7_LEVEL)
#define IRQ_CPU_EXTERNAL0 (IRQ_BASE_CPU + IRQ_XIRQ0_LEVEL)
#define IRQ_CPU_EXTERNAL1 (IRQ_BASE_CPU + IRQ_XIRQ1_LEVEL)
#define IRQ_CPU_EXTERNAL2 (IRQ_BASE_CPU + IRQ_XIRQ2_LEVEL)
#define IRQ_CPU_EXTERNAL3 (IRQ_BASE_CPU + IRQ_XIRQ3_LEVEL)
#define IRQ_CPU_EXTERNAL4 (IRQ_BASE_CPU + IRQ_XIRQ4_LEVEL)
#define IRQ_CPU_EXTERNAL5 (IRQ_BASE_CPU + IRQ_XIRQ5_LEVEL)
#define IRQ_CPU_EXTERNAL6 (IRQ_BASE_CPU + IRQ_XIRQ6_LEVEL)
#define IRQ_CPU_EXTERNAL7 (IRQ_BASE_CPU + IRQ_XIRQ7_LEVEL)
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_CPU_IRQS_H */

30
arch/frv/include/asm/current.h
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@ -1,30 +0,0 @@
/* current.h: FRV current task pointer
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_CURRENT_H
#define _ASM_CURRENT_H
#ifndef __ASSEMBLY__
/*
* dedicate GR29 to keeping the current task pointer
*/
register struct task_struct *current asm("gr29");
#define get_current() current
#else
#define CURRENT gr29
#endif
#endif /* _ASM_CURRENT_H */

50
arch/frv/include/asm/delay.h
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@ -1,50 +0,0 @@
/* delay.h: FRV delay code
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_DELAY_H
#define _ASM_DELAY_H
#include <asm/param.h>
#include <asm/timer-regs.h>
/*
* delay loop - runs at __core_clock_speed_HZ / 2 [there are 2 insns in the loop]
*/
extern unsigned long __delay_loops_MHz;
static inline void __delay(unsigned long loops)
{
asm volatile("1: subicc %0,#1,%0,icc0 \n"
" bnc icc0,#2,1b \n"
: "=r" (loops)
: "0" (loops)
: "icc0"
);
}
/*
* Use only for very small delays ( < 1 msec). Should probably use a
* lookup table, really, as the multiplications take much too long with
* short delays. This is a "reasonable" implementation, though (and the
* first constant multiplications gets optimized away if the delay is
* a constant)
*/
extern unsigned long loops_per_jiffy;
static inline void udelay(unsigned long usecs)
{
__delay(usecs * __delay_loops_MHz);
}
#define ndelay(n) udelay((n) * 5)
#endif /* _ASM_DELAY_H */

1
arch/frv/include/asm/div64.h
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@ -1 +0,0 @@
#include <asm-generic/div64.h>

37
arch/frv/include/asm/dm9000.h
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@ -1,37 +0,0 @@
/* dm9000.h: Davicom DM9000 adapter configuration
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_DM9000_H
#define _ASM_DM9000_H
#include <asm/mb-regs.h>
#define DM9000_ARCH_IOBASE (__region_CS6 + 0x300)
#define DM9000_ARCH_IRQ IRQ_CPU_EXTERNAL3 /* XIRQ #3 (shared with FPGA) */
#undef DM9000_ARCH_IRQ_ACTLOW /* IRQ pin active high */
#define DM9000_ARCH_BUS_INFO "CS6#+0x300" /* bus info for ethtool */
#undef __is_PCI_IO
#define __is_PCI_IO(addr) 0 /* not PCI */
#undef inl
#define inl(addr) \
({ \
unsigned long __ioaddr = (unsigned long) addr; \
uint32_t x = readl(__ioaddr); \
((x & 0xff) << 24) | ((x & 0xff00) << 8) | ((x >> 8) & 0xff00) | ((x >> 24) & 0xff); \
})
#undef insl
#define insl(a,b,l) __insl(a,b,l,0) /* don't byte-swap */
#endif /* _ASM_DM9000_H */

18
arch/frv/include/asm/dma-mapping.h
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@ -1,18 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_DMA_MAPPING_H
#define _ASM_DMA_MAPPING_H
#include <asm/cache.h>
#include <asm/cacheflush.h>
extern unsigned long __nongprelbss dma_coherent_mem_start;
extern unsigned long __nongprelbss dma_coherent_mem_end;
extern const struct dma_map_ops frv_dma_ops;
static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
{
return &frv_dma_ops;
}
#endif /* _ASM_DMA_MAPPING_H */

125
arch/frv/include/asm/dma.h
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@ -1,125 +0,0 @@
/* dma.h: FRV DMA controller management
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_DMA_H
#define _ASM_DMA_H
//#define DMA_DEBUG 1
#include <linux/interrupt.h>
#undef MAX_DMA_CHANNELS /* don't use kernel/dma.c */
/* under 2.4 this is actually needed by the new bootmem allocator */
#define MAX_DMA_ADDRESS PAGE_OFFSET
/*
* FRV DMA controller management
*/
typedef irqreturn_t (*dma_irq_handler_t)(int dmachan, unsigned long cstr, void *data);
extern void frv_dma_init(void);
extern int frv_dma_open(const char *devname,
unsigned long dmamask,
int dmacap,
dma_irq_handler_t handler,
unsigned long irq_flags,
void *data);
/* channels required */
#define FRV_DMA_MASK_ANY ULONG_MAX /* any channel */
/* capabilities required */
#define FRV_DMA_CAP_DREQ 0x01 /* DMA request pin */
#define FRV_DMA_CAP_DACK 0x02 /* DMA ACK pin */
#define FRV_DMA_CAP_DONE 0x04 /* DMA done pin */
extern void frv_dma_close(int dma);
extern void frv_dma_config(int dma, unsigned long ccfr, unsigned long cctr, unsigned long apr);
extern void frv_dma_start(int dma,
unsigned long sba, unsigned long dba,
unsigned long pix, unsigned long six, unsigned long bcl);
extern void frv_dma_restart_circular(int dma, unsigned long six);
extern void frv_dma_stop(int dma);
extern int is_frv_dma_interrupting(int dma);
extern void frv_dma_dump(int dma);
extern void frv_dma_status_clear(int dma);
#define FRV_DMA_NCHANS 8
#define FRV_DMA_4CHANS 4
#define FRV_DMA_8CHANS 8
#define DMAC_CCFRx 0x00 /* channel configuration reg */
#define DMAC_CCFRx_CM_SHIFT 16
#define DMAC_CCFRx_CM_DA 0x00000000
#define DMAC_CCFRx_CM_SCA 0x00010000
#define DMAC_CCFRx_CM_DCA 0x00020000
#define DMAC_CCFRx_CM_2D 0x00030000
#define DMAC_CCFRx_ATS_SHIFT 8
#define DMAC_CCFRx_RS_INTERN 0x00000000
#define DMAC_CCFRx_RS_EXTERN 0x00000001
#define DMAC_CCFRx_RS_SHIFT 0
#define DMAC_CSTRx 0x08 /* channel status reg */
#define DMAC_CSTRx_FS 0x0000003f
#define DMAC_CSTRx_NE 0x00000100
#define DMAC_CSTRx_FED 0x00000200
#define DMAC_CSTRx_WER 0x00000800
#define DMAC_CSTRx_RER 0x00001000
#define DMAC_CSTRx_CE 0x00002000
#define DMAC_CSTRx_INT 0x00800000
#define DMAC_CSTRx_BUSY 0x80000000
#define DMAC_CCTRx 0x10 /* channel control reg */
#define DMAC_CCTRx_DSIZ_1 0x00000000
#define DMAC_CCTRx_DSIZ_2 0x00000001
#define DMAC_CCTRx_DSIZ_4 0x00000002
#define DMAC_CCTRx_DSIZ_32 0x00000005
#define DMAC_CCTRx_DAU_HOLD 0x00000000
#define DMAC_CCTRx_DAU_INC 0x00000010
#define DMAC_CCTRx_DAU_DEC 0x00000020
#define DMAC_CCTRx_SSIZ_1 0x00000000
#define DMAC_CCTRx_SSIZ_2 0x00000100
#define DMAC_CCTRx_SSIZ_4 0x00000200
#define DMAC_CCTRx_SSIZ_32 0x00000500
#define DMAC_CCTRx_SAU_HOLD 0x00000000
#define DMAC_CCTRx_SAU_INC 0x00001000
#define DMAC_CCTRx_SAU_DEC 0x00002000
#define DMAC_CCTRx_FC 0x08000000
#define DMAC_CCTRx_ICE 0x10000000
#define DMAC_CCTRx_IE 0x40000000
#define DMAC_CCTRx_ACT 0x80000000
#define DMAC_SBAx 0x18 /* source base address reg */
#define DMAC_DBAx 0x20 /* data base address reg */
#define DMAC_PIXx 0x28 /* primary index reg */
#define DMAC_SIXx 0x30 /* secondary index reg */
#define DMAC_BCLx 0x38 /* byte count limit reg */
#define DMAC_APRx 0x40 /* alternate pointer reg */
/*
* required for PCI + MODULES
*/
#ifdef CONFIG_PCI
extern int isa_dma_bridge_buggy;
#else
#define isa_dma_bridge_buggy (0)
#endif
#endif /* _ASM_DMA_H */

140
arch/frv/include/asm/elf.h
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/* elf.h: FR-V ELF definitions
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
* - Derived from include/asm-m68knommu/elf.h
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef __ASM_ELF_H
#define __ASM_ELF_H
#include <asm/ptrace.h>
#include <asm/user.h>
struct elf32_hdr;
/*
* ELF header e_flags defines.
*/
#define EF_FRV_GPR_MASK 0x00000003 /* mask for # of gprs */
#define EF_FRV_GPR32 0x00000001 /* Only uses GR on 32-register */
#define EF_FRV_GPR64 0x00000002 /* Only uses GR on 64-register */
#define EF_FRV_FPR_MASK 0x0000000c /* mask for # of fprs */
#define EF_FRV_FPR32 0x00000004 /* Only uses FR on 32-register */
#define EF_FRV_FPR64 0x00000008 /* Only uses FR on 64-register */
#define EF_FRV_FPR_NONE 0x0000000C /* Uses software floating-point */
#define EF_FRV_DWORD_MASK 0x00000030 /* mask for dword support */
#define EF_FRV_DWORD_YES 0x00000010 /* Assumes stack aligned to 8-byte boundaries. */
#define EF_FRV_DWORD_NO 0x00000020 /* Assumes stack aligned to 4-byte boundaries. */
#define EF_FRV_DOUBLE 0x00000040 /* Uses double instructions. */
#define EF_FRV_MEDIA 0x00000080 /* Uses media instructions. */
#define EF_FRV_PIC 0x00000100 /* Uses position independent code. */
#define EF_FRV_NON_PIC_RELOCS 0x00000200 /* Does not use position Independent code. */
#define EF_FRV_MULADD 0x00000400 /* -mmuladd */
#define EF_FRV_BIGPIC 0x00000800 /* -fPIC */
#define EF_FRV_LIBPIC 0x00001000 /* -mlibrary-pic */
#define EF_FRV_G0 0x00002000 /* -G 0, no small data ptr */
#define EF_FRV_NOPACK 0x00004000 /* -mnopack */
#define EF_FRV_FDPIC 0x00008000 /* -mfdpic */
#define EF_FRV_CPU_MASK 0xff000000 /* specific cpu bits */
#define EF_FRV_CPU_GENERIC 0x00000000 /* Set CPU type is FR-V */
#define EF_FRV_CPU_FR500 0x01000000 /* Set CPU type is FR500 */
#define EF_FRV_CPU_FR300 0x02000000 /* Set CPU type is FR300 */
#define EF_FRV_CPU_SIMPLE 0x03000000 /* SIMPLE */
#define EF_FRV_CPU_TOMCAT 0x04000000 /* Tomcat, FR500 prototype */
#define EF_FRV_CPU_FR400 0x05000000 /* Set CPU type is FR400 */
#define EF_FRV_CPU_FR550 0x06000000 /* Set CPU type is FR550 */
#define EF_FRV_CPU_FR405 0x07000000 /* Set CPU type is FR405 */
#define EF_FRV_CPU_FR450 0x08000000 /* Set CPU type is FR450 */
/*
* FR-V ELF relocation types
*/
/*
* ELF register definitions..
*/
typedef unsigned long elf_greg_t;
#define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t))
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
typedef struct user_fpmedia_regs elf_fpregset_t;
/*
* This is used to ensure we don't load something for the wrong architecture.
*/
extern int elf_check_arch(const struct elf32_hdr *hdr);
#define elf_check_fdpic(x) ((x)->e_flags & EF_FRV_FDPIC && !((x)->e_flags & EF_FRV_NON_PIC_RELOCS))
#define elf_check_const_displacement(x) ((x)->e_flags & EF_FRV_PIC)
/*
* These are used to set parameters in the core dumps.
*/
#define ELF_CLASS ELFCLASS32
#define ELF_DATA ELFDATA2MSB
#define ELF_ARCH EM_FRV
#define ELF_PLAT_INIT(_r) \
do { \
__kernel_frame0_ptr->gr16 = 0; \
__kernel_frame0_ptr->gr17 = 0; \
__kernel_frame0_ptr->gr18 = 0; \
__kernel_frame0_ptr->gr19 = 0; \
__kernel_frame0_ptr->gr20 = 0; \
__kernel_frame0_ptr->gr21 = 0; \
__kernel_frame0_ptr->gr22 = 0; \
__kernel_frame0_ptr->gr23 = 0; \
__kernel_frame0_ptr->gr24 = 0; \
__kernel_frame0_ptr->gr25 = 0; \
__kernel_frame0_ptr->gr26 = 0; \
__kernel_frame0_ptr->gr27 = 0; \
__kernel_frame0_ptr->gr29 = 0; \
} while(0)
#define ELF_FDPIC_PLAT_INIT(_regs, _exec_map_addr, _interp_map_addr, _dynamic_addr) \
do { \
__kernel_frame0_ptr->gr16 = _exec_map_addr; \
__kernel_frame0_ptr->gr17 = _interp_map_addr; \
__kernel_frame0_ptr->gr18 = _dynamic_addr; \
__kernel_frame0_ptr->gr19 = 0; \
__kernel_frame0_ptr->gr20 = 0; \
__kernel_frame0_ptr->gr21 = 0; \
__kernel_frame0_ptr->gr22 = 0; \
__kernel_frame0_ptr->gr23 = 0; \
__kernel_frame0_ptr->gr24 = 0; \
__kernel_frame0_ptr->gr25 = 0; \
__kernel_frame0_ptr->gr26 = 0; \
__kernel_frame0_ptr->gr27 = 0; \
__kernel_frame0_ptr->gr29 = 0; \
} while(0)
#define CORE_DUMP_USE_REGSET
#define ELF_FDPIC_CORE_EFLAGS EF_FRV_FDPIC
#define ELF_EXEC_PAGESIZE 16384
/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
use of this is to invoke "./ld.so someprog" to test out a new version of
the loader. We need to make sure that it is out of the way of the program
that it will "exec", and that there is sufficient room for the brk. */
#define ELF_ET_DYN_BASE 0x08000000UL
/* This yields a mask that user programs can use to figure out what
instruction set this cpu supports. */
#define ELF_HWCAP (0)
/* This yields a string that ld.so will use to load implementation
specific libraries for optimization. This is more specific in
intent than poking at uname or /proc/cpuinfo. */
#define ELF_PLATFORM (NULL)
#endif

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arch/frv/include/asm/emergency-restart.h
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#ifndef _ASM_EMERGENCY_RESTART_H
#define _ASM_EMERGENCY_RESTART_H
#include <asm-generic/emergency-restart.h>
#endif /* _ASM_EMERGENCY_RESTART_H */

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arch/frv/include/asm/fpu.h
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_FPU_H
#define __ASM_FPU_H
/*
* MAX floating point unit state size (FSAVE/FRESTORE)
*/
#define kernel_fpu_end() do { asm volatile("bar":::"memory"); preempt_enable(); } while(0)
#endif /* __ASM_FPU_H */

1
arch/frv/include/asm/ftrace.h
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/* empty */

22
arch/frv/include/asm/futex.h
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_FUTEX_H
#define _ASM_FUTEX_H
#ifdef __KERNEL__
#include <linux/futex.h>
#include <asm/errno.h>
#include <linux/uaccess.h>
extern int arch_futex_atomic_op_inuser(int op, int oparg, int *oval,
u32 __user *uaddr);
static inline int
futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
return -ENOSYS;
}
#endif
#endif

146
arch/frv/include/asm/gdb-stub.h
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/* gdb-stub.h: FRV GDB stub
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
* - Derived from asm-mips/gdb-stub.h (c) 1995 Andreas Busse
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef __ASM_GDB_STUB_H
#define __ASM_GDB_STUB_H
#undef GDBSTUB_DEBUG_IO
#undef GDBSTUB_DEBUG_PROTOCOL
#include <asm/ptrace.h>
/*
* important register numbers in GDB protocol
* - GR0, GR1, GR2, GR3, GR4, GR5, GR6, GR7,
* - GR8, GR9, GR10, GR11, GR12, GR13, GR14, GR15,
* - GR16, GR17, GR18, GR19, GR20, GR21, GR22, GR23,
* - GR24, GR25, GR26, GR27, GR28, GR29, GR30, GR31,
* - GR32, GR33, GR34, GR35, GR36, GR37, GR38, GR39,
* - GR40, GR41, GR42, GR43, GR44, GR45, GR46, GR47,
* - GR48, GR49, GR50, GR51, GR52, GR53, GR54, GR55,
* - GR56, GR57, GR58, GR59, GR60, GR61, GR62, GR63,
* - FR0, FR1, FR2, FR3, FR4, FR5, FR6, FR7,
* - FR8, FR9, FR10, FR11, FR12, FR13, FR14, FR15,
* - FR16, FR17, FR18, FR19, FR20, FR21, FR22, FR23,
* - FR24, FR25, FR26, FR27, FR28, FR29, FR30, FR31,
* - FR32, FR33, FR34, FR35, FR36, FR37, FR38, FR39,
* - FR40, FR41, FR42, FR43, FR44, FR45, FR46, FR47,
* - FR48, FR49, FR50, FR51, FR52, FR53, FR54, FR55,
* - FR56, FR57, FR58, FR59, FR60, FR61, FR62, FR63,
* - PC, PSR, CCR, CCCR,
* - _X132, _X133, _X134
* - TBR, BRR, DBAR0, DBAR1, DBAR2, DBAR3,
* - SCR0, SCR1, SCR2, SCR3,
* - LR, LCR,
* - IACC0H, IACC0L,
* - FSR0,
* - ACC0, ACC1, ACC2, ACC3, ACC4, ACC5, ACC6, ACC7,
* - ACCG0123, ACCG4567,
* - MSR0, MSR1,
* - GNER0, GNER1,
* - FNER0, FNER1,
*/
#define GDB_REG_GR(N) (N)
#define GDB_REG_FR(N) (64+(N))
#define GDB_REG_PC 128
#define GDB_REG_PSR 129
#define GDB_REG_CCR 130
#define GDB_REG_CCCR 131
#define GDB_REG_TBR 135
#define GDB_REG_BRR 136
#define GDB_REG_DBAR(N) (137+(N))
#define GDB_REG_SCR(N) (141+(N))
#define GDB_REG_LR 145
#define GDB_REG_LCR 146
#define GDB_REG_FSR0 149
#define GDB_REG_ACC(N) (150+(N))
#define GDB_REG_ACCG(N) (158+(N)/4)
#define GDB_REG_MSR(N) (160+(N))
#define GDB_REG_GNER(N) (162+(N))
#define GDB_REG_FNER(N) (164+(N))
#define GDB_REG_SP GDB_REG_GR(1)
#define GDB_REG_FP GDB_REG_GR(2)
#ifndef _LANGUAGE_ASSEMBLY
/*
* Prototypes
*/
extern void show_registers_only(struct pt_regs *regs);
extern void gdbstub_init(void);
extern void gdbstub(int type);
extern void gdbstub_exit(int status);
extern void gdbstub_io_init(void);
extern void gdbstub_set_baud(unsigned baud);
extern int gdbstub_rx_char(unsigned char *_ch, int nonblock);
extern void gdbstub_tx_char(unsigned char ch);
extern void gdbstub_tx_flush(void);
extern void gdbstub_do_rx(void);
extern asmlinkage void __debug_stub_init_break(void);
extern asmlinkage void __break_hijack_kernel_event(void);
extern asmlinkage void __break_hijack_kernel_event_breaks_here(void);
extern asmlinkage void gdbstub_rx_handler(void);
extern asmlinkage void gdbstub_rx_irq(void);
extern asmlinkage void gdbstub_intercept(void);
extern uint32_t __entry_usertrap_table[];
extern uint32_t __entry_kerneltrap_table[];
extern volatile u8 gdbstub_rx_buffer[PAGE_SIZE];
extern volatile u32 gdbstub_rx_inp;
extern volatile u32 gdbstub_rx_outp;
extern volatile u8 gdbstub_rx_overflow;
extern u8 gdbstub_rx_unget;
extern void gdbstub_printk(const char *fmt, ...);
extern void debug_to_serial(const char *p, int n);
extern void console_set_baud(unsigned baud);
#ifdef GDBSTUB_DEBUG_IO
#define gdbstub_io(FMT,...) gdbstub_printk(FMT, ##__VA_ARGS__)
#else
#define gdbstub_io(FMT,...) ({ 0; })
#endif
#ifdef GDBSTUB_DEBUG_PROTOCOL
#define gdbstub_proto(FMT,...) gdbstub_printk(FMT,##__VA_ARGS__)
#else
#define gdbstub_proto(FMT,...) ({ 0; })
#endif
/*
* we dedicate GR31 to keeping a pointer to the gdbstub exception frame
* - gr31 is destroyed on entry to the gdbstub if !MMU
* - gr31 is saved in scr3 on entry to the gdbstub if in !MMU
*/
register struct frv_frame0 *__debug_frame0 asm("gr31");
#define __debug_frame (&__debug_frame0->regs)
#define __debug_user_context (&__debug_frame0->uc)
#define __debug_regs (&__debug_frame0->debug)
#define __debug_reg(X) ((unsigned long *) ((unsigned long) &__debug_frame0 + (X)))
struct frv_debug_status {
unsigned long bpsr;
unsigned long dcr;
unsigned long brr;
unsigned long nmar;
};
extern struct frv_debug_status __debug_status;
#endif /* _LANGUAGE_ASSEMBLY */
#endif /* __ASM_GDB_STUB_H */

116
arch/frv/include/asm/gpio-regs.h
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/* gpio-regs.h: on-chip general purpose I/O registers
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_GPIO_REGS
#define _ASM_GPIO_REGS
#define __reg(ADDR) (*(volatile unsigned long *)(ADDR))
#define __get_PDR() ({ __reg(0xfeff0400); })
#define __set_PDR(V) do { __reg(0xfeff0400) = (V); mb(); } while(0)
#define __get_GPDR() ({ __reg(0xfeff0408); })
#define __set_GPDR(V) do { __reg(0xfeff0408) = (V); mb(); } while(0)
#define __get_SIR() ({ __reg(0xfeff0410); })
#define __set_SIR(V) do { __reg(0xfeff0410) = (V); mb(); } while(0)
#define __get_SOR() ({ __reg(0xfeff0418); })
#define __set_SOR(V) do { __reg(0xfeff0418) = (V); mb(); } while(0)
#define __set_PDSR(V) do { __reg(0xfeff0420) = (V); mb(); } while(0)
#define __set_PDCR(V) do { __reg(0xfeff0428) = (V); mb(); } while(0)
#define __get_RSTR() ({ __reg(0xfeff0500); })
#define __set_RSTR(V) do { __reg(0xfeff0500) = (V); mb(); } while(0)
/* PDR definitions */
#define PDR_GPIO_DATA(X) (1 << (X))
/* GPDR definitions */
#define GPDR_INPUT 0
#define GPDR_OUTPUT 1
#define GPDR_DREQ0_BIT 0x00001000
#define GPDR_DREQ1_BIT 0x00008000
#define GPDR_DREQ2_BIT 0x00040000
#define GPDR_DREQ3_BIT 0x00080000
#define GPDR_DREQ4_BIT 0x00004000
#define GPDR_DREQ5_BIT 0x00020000
#define GPDR_DREQ6_BIT 0x00100000
#define GPDR_DREQ7_BIT 0x00200000
#define GPDR_DACK0_BIT 0x00002000
#define GPDR_DACK1_BIT 0x00010000
#define GPDR_DACK2_BIT 0x00100000
#define GPDR_DACK3_BIT 0x00200000
#define GPDR_DONE0_BIT 0x00004000
#define GPDR_DONE1_BIT 0x00020000
#define GPDR_GPIO_DIR(X,D) ((D) << (X))
/* SIR definitions */
#define SIR_GPIO_INPUT 0
#define SIR_DREQ7_INPUT 0x00200000
#define SIR_DREQ6_INPUT 0x00100000
#define SIR_DREQ3_INPUT 0x00080000
#define SIR_DREQ2_INPUT 0x00040000
#define SIR_DREQ5_INPUT 0x00020000
#define SIR_DREQ1_INPUT 0x00008000
#define SIR_DREQ4_INPUT 0x00004000
#define SIR_DREQ0_INPUT 0x00001000
#define SIR_RXD1_INPUT 0x00000400
#define SIR_CTS0_INPUT 0x00000100
#define SIR_RXD0_INPUT 0x00000040
#define SIR_GATE1_INPUT 0x00000020
#define SIR_GATE0_INPUT 0x00000010
#define SIR_IRQ3_INPUT 0x00000008
#define SIR_IRQ2_INPUT 0x00000004
#define SIR_IRQ1_INPUT 0x00000002
#define SIR_IRQ0_INPUT 0x00000001
#define SIR_DREQ_BITS (SIR_DREQ0_INPUT | SIR_DREQ1_INPUT | \
SIR_DREQ2_INPUT | SIR_DREQ3_INPUT | \
SIR_DREQ4_INPUT | SIR_DREQ5_INPUT | \
SIR_DREQ6_INPUT | SIR_DREQ7_INPUT)
/* SOR definitions */
#define SOR_GPIO_OUTPUT 0
#define SOR_DACK3_OUTPUT 0x00200000
#define SOR_DACK2_OUTPUT 0x00100000
#define SOR_DONE1_OUTPUT 0x00020000
#define SOR_DACK1_OUTPUT 0x00010000
#define SOR_DONE0_OUTPUT 0x00004000
#define SOR_DACK0_OUTPUT 0x00002000
#define SOR_TXD1_OUTPUT 0x00000800
#define SOR_RTS0_OUTPUT 0x00000200
#define SOR_TXD0_OUTPUT 0x00000080
#define SOR_TOUT1_OUTPUT 0x00000020
#define SOR_TOUT0_OUTPUT 0x00000010
#define SOR_DONE_BITS (SOR_DONE0_OUTPUT | SOR_DONE1_OUTPUT)
#define SOR_DACK_BITS (SOR_DACK0_OUTPUT | SOR_DACK1_OUTPUT | \
SOR_DACK2_OUTPUT | SOR_DACK3_OUTPUT)
/* PDSR definitions */
#define PDSR_UNCHANGED 0
#define PDSR_SET_BIT(X) (1 << (X))
/* PDCR definitions */
#define PDCR_UNCHANGED 0
#define PDCR_CLEAR_BIT(X) (1 << (X))
/* RSTR definitions */
/* Read Only */
#define RSTR_POWERON 0x00000400
#define RSTR_SOFTRESET_STATUS 0x00000100
/* Write Only */
#define RSTR_SOFTRESET 0x00000001
#endif /* _ASM_GPIO_REGS */

26
arch/frv/include/asm/hardirq.h
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/* hardirq.h: FRV hardware IRQ management
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef __ASM_HARDIRQ_H
#define __ASM_HARDIRQ_H
#include <linux/atomic.h>
extern atomic_t irq_err_count;
static inline void ack_bad_irq(int irq)
{
atomic_inc(&irq_err_count);
}
#define ack_bad_irq ack_bad_irq
#include <asm-generic/hardirq.h>
#endif

149
arch/frv/include/asm/highmem.h
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/* highmem.h: virtual kernel memory mappings for high memory
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
* - Derived from include/asm-i386/highmem.h
*
* See Documentation/frv/mmu-layout.txt for more information.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_HIGHMEM_H
#define _ASM_HIGHMEM_H
#ifdef __KERNEL__
#include <linux/init.h>
#include <linux/highmem.h>
#include <asm/mem-layout.h>
#include <asm/spr-regs.h>
#include <asm/mb-regs.h>
#define NR_TLB_LINES 64 /* number of lines in the TLB */
#ifndef __ASSEMBLY__
#include <linux/interrupt.h>
#include <asm/kmap_types.h>
#include <asm/pgtable.h>
#ifdef CONFIG_DEBUG_HIGHMEM
#define HIGHMEM_DEBUG 1
#else
#define HIGHMEM_DEBUG 0
#endif
/* declarations for highmem.c */
extern unsigned long highstart_pfn, highend_pfn;
#define kmap_prot PAGE_KERNEL
#define kmap_pte ______kmap_pte_in_TLB
extern pte_t *pkmap_page_table;
#define flush_cache_kmaps() do { } while (0)
/*
* Right now we initialize only a single pte table. It can be extended
* easily, subsequent pte tables have to be allocated in one physical
* chunk of RAM.
*/
#define LAST_PKMAP PTRS_PER_PTE
#define LAST_PKMAP_MASK (LAST_PKMAP - 1)
#define PKMAP_NR(virt) ((virt - PKMAP_BASE) >> PAGE_SHIFT)
#define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT))
extern void *kmap_high(struct page *page);
extern void kunmap_high(struct page *page);
extern void *kmap(struct page *page);
extern void kunmap(struct page *page);
#endif /* !__ASSEMBLY__ */
/*
* The use of kmap_atomic/kunmap_atomic is discouraged - kmap/kunmap
* gives a more generic (and caching) interface. But kmap_atomic can
* be used in IRQ contexts, so in some (very limited) cases we need
* it.
*/
#define KMAP_ATOMIC_CACHE_DAMR 8
#ifndef __ASSEMBLY__
#define __kmap_atomic_primary(cached, paddr, ampr) \
({ \
unsigned long damlr, dampr; \
\
dampr = paddr | xAMPRx_L | xAMPRx_M | xAMPRx_S | xAMPRx_SS_16Kb | xAMPRx_V; \
\
if (!cached) \
asm volatile("movgs %0,dampr"#ampr :: "r"(dampr) : "memory"); \
else \
/* cache flush page attachment point */ \
asm volatile("movgs %0,iampr"#ampr"\n" \
"movgs %0,dampr"#ampr"\n" \
:: "r"(dampr) : "memory" \
); \
\
asm("movsg damlr"#ampr",%0" : "=r"(damlr)); \
\
/*printk("DAMR"#ampr": PRIM sl=%d L=%08lx P=%08lx\n", type, damlr, dampr);*/ \
\
(void *) damlr; \
})
#define __kmap_atomic_secondary(slot, paddr) \
({ \
unsigned long damlr = KMAP_ATOMIC_SECONDARY_FRAME + (slot) * PAGE_SIZE; \
unsigned long dampr = paddr | xAMPRx_L | xAMPRx_M | xAMPRx_S | xAMPRx_SS_16Kb | xAMPRx_V; \
\
asm volatile("movgs %0,tplr \n" \
"movgs %1,tppr \n" \
"tlbpr %0,gr0,#2,#1" \
: : "r"(damlr), "r"(dampr) : "memory"); \
\
/*printk("TLB: SECN sl=%d L=%08lx P=%08lx\n", slot, damlr, dampr);*/ \
\
(void *) damlr; \
})
static inline void *kmap_atomic_primary(struct page *page)
{
unsigned long paddr;
pagefault_disable();
paddr = page_to_phys(page);
return __kmap_atomic_primary(1, paddr, 2);
}
#define __kunmap_atomic_primary(cached, ampr) \
do { \
asm volatile("movgs gr0,dampr"#ampr"\n" ::: "memory"); \
if (cached) \
asm volatile("movgs gr0,iampr"#ampr"\n" ::: "memory"); \
} while(0)
#define __kunmap_atomic_secondary(slot, vaddr) \
do { \
asm volatile("tlbpr %0,gr0,#4,#1" : : "r"(vaddr) : "memory"); \
} while(0)
static inline void kunmap_atomic_primary(void *kvaddr)
{
__kunmap_atomic_primary(1, 2);
pagefault_enable();
}
void *kmap_atomic(struct page *page);
void __kunmap_atomic(void *kvaddr);
#endif /* !__ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_HIGHMEM_H */

16
arch/frv/include/asm/hw_irq.h
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@ -1,16 +0,0 @@
/* hw_irq.h: FR-V specific h/w IRQ stuff
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_HW_IRQ_H
#define _ASM_HW_IRQ_H
#endif /* _ASM_HW_IRQ_H */

414
arch/frv/include/asm/io.h
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@ -1,414 +0,0 @@
/* io.h: FRV I/O operations
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* This gets interesting when talking to the PCI bus - the CPU is in big endian
* mode, the PCI bus is little endian and the hardware in the middle can do
* byte swapping
*/
#ifndef _ASM_IO_H
#define _ASM_IO_H
#ifdef __KERNEL__
#define ARCH_HAS_IOREMAP_WT
#include <linux/types.h>
#include <asm/virtconvert.h>
#include <asm/string.h>
#include <asm/mb-regs.h>
#include <asm-generic/pci_iomap.h>
#include <linux/delay.h>
/*
* swap functions are sometimes needed to interface little-endian hardware
*/
static inline unsigned short _swapw(unsigned short v)
{
return ((v << 8) | (v >> 8));
}
static inline unsigned long _swapl(unsigned long v)
{
return ((v << 24) | ((v & 0xff00) << 8) | ((v & 0xff0000) >> 8) | (v >> 24));
}
//#define __iormb() asm volatile("membar")
//#define __iowmb() asm volatile("membar")
static inline u8 __raw_readb(const volatile void __iomem *addr)
{
return __builtin_read8((volatile void __iomem *)addr);
}
static inline u16 __raw_readw(const volatile void __iomem *addr)
{
return __builtin_read16((volatile void __iomem *)addr);
}
static inline u32 __raw_readl(const volatile void __iomem *addr)
{
return __builtin_read32((volatile void __iomem *)addr);
}
#define __raw_writeb(datum, addr) __builtin_write8(addr, datum)
#define __raw_writew(datum, addr) __builtin_write16(addr, datum)
#define __raw_writel(datum, addr) __builtin_write32(addr, datum)
static inline void io_outsb(unsigned int addr, const void *buf, int len)
{
unsigned long __ioaddr = (unsigned long) addr;
const uint8_t *bp = buf;
while (len--)
__builtin_write8((volatile void __iomem *) __ioaddr, *bp++);
}
static inline void io_outsw(unsigned int addr, const void *buf, int len)
{
unsigned long __ioaddr = (unsigned long) addr;
const uint16_t *bp = buf;
while (len--)
__builtin_write16((volatile void __iomem *) __ioaddr, (*bp++));
}
extern void __outsl_ns(unsigned int addr, const void *buf, int len);
extern void __outsl_sw(unsigned int addr, const void *buf, int len);
static inline void __outsl(unsigned int addr, const void *buf, int len, int swap)
{
unsigned long __ioaddr = (unsigned long) addr;
if (!swap)
__outsl_ns(__ioaddr, buf, len);
else
__outsl_sw(__ioaddr, buf, len);
}
static inline void io_insb(unsigned long addr, void *buf, int len)
{
uint8_t *bp = buf;
while (len--)
*bp++ = __builtin_read8((volatile void __iomem *) addr);
}
static inline void io_insw(unsigned long addr, void *buf, int len)
{
uint16_t *bp = buf;
while (len--)
*bp++ = __builtin_read16((volatile void __iomem *) addr);
}
extern void __insl_ns(unsigned long addr, void *buf, int len);
extern void __insl_sw(unsigned long addr, void *buf, int len);
static inline void __insl(unsigned long addr, void *buf, int len, int swap)
{
if (!swap)
__insl_ns(addr, buf, len);
else
__insl_sw(addr, buf, len);
}
#define mmiowb() mb()
/*
* make the short names macros so specific devices
* can override them as required
*/
static inline void memset_io(volatile void __iomem *addr, unsigned char val, int count)
{
memset((void __force *) addr, val, count);
}
static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, int count)
{
memcpy(dst, (void __force *) src, count);
}
static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int count)
{
memcpy((void __force *) dst, src, count);
}
static inline uint8_t inb(unsigned long addr)
{
return __builtin_read8((void __iomem *)addr);
}
static inline uint16_t inw(unsigned long addr)
{
uint16_t ret = __builtin_read16((void __iomem *)addr);
if (__is_PCI_IO(addr))
ret = _swapw(ret);
return ret;
}
static inline uint32_t inl(unsigned long addr)
{
uint32_t ret = __builtin_read32((void __iomem *)addr);
if (__is_PCI_IO(addr))
ret = _swapl(ret);
return ret;
}
static inline void outb(uint8_t datum, unsigned long addr)
{
__builtin_write8((void __iomem *)addr, datum);
}
static inline void outw(uint16_t datum, unsigned long addr)
{
if (__is_PCI_IO(addr))
datum = _swapw(datum);
__builtin_write16((void __iomem *)addr, datum);
}
static inline void outl(uint32_t datum, unsigned long addr)
{
if (__is_PCI_IO(addr))
datum = _swapl(datum);
__builtin_write32((void __iomem *)addr, datum);
}
#define inb_p(addr) inb(addr)
#define inw_p(addr) inw(addr)
#define inl_p(addr) inl(addr)
#define outb_p(x,addr) outb(x,addr)
#define outw_p(x,addr) outw(x,addr)
#define outl_p(x,addr) outl(x,addr)
#define outsb(a,b,l) io_outsb(a,b,l)
#define outsw(a,b,l) io_outsw(a,b,l)
#define outsl(a,b,l) __outsl(a,b,l,0)
#define insb(a,b,l) io_insb(a,b,l)
#define insw(a,b,l) io_insw(a,b,l)
#define insl(a,b,l) __insl(a,b,l,0)
#define IO_SPACE_LIMIT 0xffffffff
static inline uint8_t readb(const volatile void __iomem *addr)
{
return __builtin_read8((__force void volatile __iomem *) addr);
}
static inline uint16_t readw(const volatile void __iomem *addr)
{
uint16_t ret = __builtin_read16((__force void volatile __iomem *)addr);
if (__is_PCI_MEM(addr))
ret = _swapw(ret);
return ret;
}
static inline uint32_t readl(const volatile void __iomem *addr)
{
uint32_t ret = __builtin_read32((__force void volatile __iomem *)addr);
if (__is_PCI_MEM(addr))
ret = _swapl(ret);
return ret;
}
#define readb_relaxed readb
#define readw_relaxed readw
#define readl_relaxed readl
static inline void writeb(uint8_t datum, volatile void __iomem *addr)
{
__builtin_write8(addr, datum);
if (__is_PCI_MEM(addr))
__flush_PCI_writes();
}
static inline void writew(uint16_t datum, volatile void __iomem *addr)
{
if (__is_PCI_MEM(addr))
datum = _swapw(datum);
__builtin_write16(addr, datum);
if (__is_PCI_MEM(addr))
__flush_PCI_writes();
}
static inline void writel(uint32_t datum, volatile void __iomem *addr)
{
if (__is_PCI_MEM(addr))
datum = _swapl(datum);
__builtin_write32(addr, datum);
if (__is_PCI_MEM(addr))
__flush_PCI_writes();
}
#define writeb_relaxed writeb
#define writew_relaxed writew
#define writel_relaxed writel
/* Values for nocacheflag and cmode */
#define IOMAP_FULL_CACHING 0
#define IOMAP_NOCACHE_SER 1
#define IOMAP_NOCACHE_NONSER 2
#define IOMAP_WRITETHROUGH 3
extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag);
static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
{
return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
}
static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned long size)
{
return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
}
static inline void __iomem *ioremap_wt(unsigned long physaddr, unsigned long size)
{
return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
}
static inline void __iomem *ioremap_fullcache(unsigned long physaddr, unsigned long size)
{
return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
}
#define ioremap_wc ioremap_nocache
#define ioremap_uc ioremap_nocache
extern void iounmap(void volatile __iomem *addr);
static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
{
return (void __iomem *) port;
}
static inline void ioport_unmap(void __iomem *p)
{
}
static inline void flush_write_buffers(void)
{
__asm__ __volatile__ ("membar" : : :"memory");
}
/*
* do appropriate I/O accesses for token type
*/
static inline unsigned int ioread8(void __iomem *p)
{
return __builtin_read8(p);
}
static inline unsigned int ioread16(void __iomem *p)
{
uint16_t ret = __builtin_read16(p);
if (__is_PCI_addr(p))
ret = _swapw(ret);
return ret;
}
static inline unsigned int ioread32(void __iomem *p)
{
uint32_t ret = __builtin_read32(p);
if (__is_PCI_addr(p))
ret = _swapl(ret);
return ret;
}
static inline void iowrite8(u8 val, void __iomem *p)
{
__builtin_write8(p, val);
if (__is_PCI_MEM(p))
__flush_PCI_writes();
}
static inline void iowrite16(u16 val, void __iomem *p)
{
if (__is_PCI_addr(p))
val = _swapw(val);
__builtin_write16(p, val);
if (__is_PCI_MEM(p))
__flush_PCI_writes();
}
static inline void iowrite32(u32 val, void __iomem *p)
{
if (__is_PCI_addr(p))
val = _swapl(val);
__builtin_write32(p, val);
if (__is_PCI_MEM(p))
__flush_PCI_writes();
}
#define ioread16be(addr) be16_to_cpu(ioread16(addr))
#define ioread32be(addr) be32_to_cpu(ioread32(addr))
#define iowrite16be(v, addr) iowrite16(cpu_to_be16(v), (addr))
#define iowrite32be(v, addr) iowrite32(cpu_to_be32(v), (addr))
static inline void ioread8_rep(void __iomem *p, void *dst, unsigned long count)
{
io_insb((unsigned long) p, dst, count);
}
static inline void ioread16_rep(void __iomem *p, void *dst, unsigned long count)
{
io_insw((unsigned long) p, dst, count);
}
static inline void ioread32_rep(void __iomem *p, void *dst, unsigned long count)
{
__insl_ns((unsigned long) p, dst, count);
}
static inline void iowrite8_rep(void __iomem *p, const void *src, unsigned long count)
{
io_outsb((unsigned long) p, src, count);
}
static inline void iowrite16_rep(void __iomem *p, const void *src, unsigned long count)
{
io_outsw((unsigned long) p, src, count);
}
static inline void iowrite32_rep(void __iomem *p, const void *src, unsigned long count)
{
__outsl_ns((unsigned long) p, src, count);
}
/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
struct pci_dev;
static inline void pci_iounmap(struct pci_dev *dev, void __iomem *p)
{
}
/*
* Convert a physical pointer to a virtual kernel pointer for /dev/mem
* access
*/
#define xlate_dev_mem_ptr(p) __va(p)
/*
* Convert a virtual cached pointer to an uncached pointer
*/
#define xlate_dev_kmem_ptr(p) p
#endif /* __KERNEL__ */
#endif /* _ASM_IO_H */

53
arch/frv/include/asm/irc-regs.h
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@ -1,53 +0,0 @@
/* irc-regs.h: on-chip interrupt controller registers
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_IRC_REGS
#define _ASM_IRC_REGS
#define __reg(ADDR) (*(volatile unsigned long *)(ADDR))
#define __get_TM0() ({ __reg(0xfeff9800); })
#define __get_TM1() ({ __reg(0xfeff9808); })
#define __set_TM1(V) do { __reg(0xfeff9808) = (V); mb(); } while(0)
#define __set_TM1x(XI,V) \
do { \
int shift = (XI) * 2 + 16; \
unsigned long tm1 = __reg(0xfeff9808); \
tm1 &= ~(0x3 << shift); \
tm1 |= (V) << shift; \
__reg(0xfeff9808) = tm1; \
mb(); \
} while(0)
#define __get_RS(C) ({ (__reg(0xfeff9810) >> ((C)+16)) & 1; })
#define __clr_RC(C) do { __reg(0xfeff9818) = 1 << ((C)+16); mb(); } while(0)
#define __get_MASK(C) ({ (__reg(0xfeff9820) >> ((C)+16)) & 1; })
#define __set_MASK(C) do { __reg(0xfeff9820) |= 1 << ((C)+16); mb(); } while(0)
#define __clr_MASK(C) do { __reg(0xfeff9820) &= ~(1 << ((C)+16)); mb(); } while(0)
#define __get_MASK_all() __get_MASK(0)
#define __set_MASK_all() __set_MASK(0)
#define __clr_MASK_all() __clr_MASK(0)
#define __get_IRL() ({ (__reg(0xfeff9828) >> 16) & 0xf; })
#define __clr_IRL() do { __reg(0xfeff9828) = 0x100000; mb(); } while(0)
#define __get_IRR(N) ({ __reg(0xfeff9840 + (N) * 8); })
#define __set_IRR(N,V) do { __reg(0xfeff9840 + (N) * 8) = (V); } while(0)
#define __get_IITMR(N) ({ __reg(0xfeff9880 + (N) * 8); })
#define __set_IITMR(N,V) do { __reg(0xfeff9880 + (N) * 8) = (V); } while(0)
#endif /* _ASM_IRC_REGS */

30
arch/frv/include/asm/irq.h
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@ -1,30 +0,0 @@
/* irq.h: FRV IRQ definitions
*
* Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_IRQ_H_
#define _ASM_IRQ_H_
#define NR_IRQS 48
#define IRQ_BASE_CPU (0 * 16)
#define IRQ_BASE_FPGA (1 * 16)
#define IRQ_BASE_MB93493 (2 * 16)
/* probe returns a 32-bit IRQ mask:-/ */
#define MIN_PROBE_IRQ (NR_IRQS - 32)
#ifndef __ASSEMBLY__
static inline int irq_canonicalize(int irq)
{
return irq;
}
#endif
#endif /* _ASM_IRQ_H_ */

27
arch/frv/include/asm/irq_regs.h
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@ -1,27 +0,0 @@
/* FRV per-CPU frame pointer holder
*
* Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_IRQ_REGS_H
#define _ASM_IRQ_REGS_H
/*
* Per-cpu current frame pointer - the location of the last exception frame on
* the stack
* - on FRV, GR28 is dedicated to keeping a pointer to the current exception
* frame
*/
#define ARCH_HAS_OWN_IRQ_REGS
#ifndef __ASSEMBLY__
#define get_irq_regs() (__frame)
#endif
#endif /* _ASM_IRQ_REGS_H */

158
arch/frv/include/asm/irqflags.h
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@ -1,158 +0,0 @@
/* FR-V interrupt handling
*
* Copyright (C) 2010 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef _ASM_IRQFLAGS_H
#define _ASM_IRQFLAGS_H
/*
* interrupt flag manipulation
* - use virtual interrupt management since touching the PSR is slow
* - ICC2.Z: T if interrupts virtually disabled
* - ICC2.C: F if interrupts really disabled
* - if Z==1 upon interrupt:
* - C is set to 0
* - interrupts are really disabled
* - entry.S returns immediately
* - uses TIHI (TRAP if Z==0 && C==0) #2 to really reenable interrupts
* - if taken, the trap:
* - sets ICC2.C
* - enables interrupts
*/
static inline void arch_local_irq_disable(void)
{
/* set Z flag, but don't change the C flag */
asm volatile(" andcc gr0,gr0,gr0,icc2 \n"
:
:
: "memory", "icc2"
);
}
static inline void arch_local_irq_enable(void)
{
/* clear Z flag and then test the C flag */
asm volatile(" oricc gr0,#1,gr0,icc2 \n"
" tihi icc2,gr0,#2 \n"
:
:
: "memory", "icc2"
);
}
static inline unsigned long arch_local_save_flags(void)
{
unsigned long flags;
asm volatile("movsg ccr,%0"
: "=r"(flags)
:
: "memory");
/* shift ICC2.Z to bit 0 */
flags >>= 26;
/* make flags 1 if interrupts disabled, 0 otherwise */
return flags & 1UL;
}
static inline unsigned long arch_local_irq_save(void)
{
unsigned long flags = arch_local_save_flags();
arch_local_irq_disable();
return flags;
}
static inline void arch_local_irq_restore(unsigned long flags)
{
/* load the Z flag by turning 1 if disabled into 0 if disabled
* and thus setting the Z flag but not the C flag */
asm volatile(" xoricc %0,#1,gr0,icc2 \n"
/* then trap if Z=0 and C=0 */
" tihi icc2,gr0,#2 \n"
:
: "r"(flags)
: "memory", "icc2"
);
}
static inline bool arch_irqs_disabled_flags(unsigned long flags)
{
return flags;
}
static inline bool arch_irqs_disabled(void)
{
return arch_irqs_disabled_flags(arch_local_save_flags());
}
/*
* real interrupt flag manipulation
*/
#define __arch_local_irq_disable() \
do { \
unsigned long psr; \
asm volatile(" movsg psr,%0 \n" \
" andi %0,%2,%0 \n" \
" ori %0,%1,%0 \n" \
" movgs %0,psr \n" \
: "=r"(psr) \
: "i" (PSR_PIL_14), "i" (~PSR_PIL) \
: "memory"); \
} while (0)
#define __arch_local_irq_enable() \
do { \
unsigned long psr; \
asm volatile(" movsg psr,%0 \n" \
" andi %0,%1,%0 \n" \
" movgs %0,psr \n" \
: "=r"(psr) \
: "i" (~PSR_PIL) \
: "memory"); \
} while (0)
#define __arch_local_save_flags(flags) \
do { \
typecheck(unsigned long, flags); \
asm("movsg psr,%0" \
: "=r"(flags) \
: \
: "memory"); \
} while (0)
#define __arch_local_irq_save(flags) \
do { \
unsigned long npsr; \
typecheck(unsigned long, flags); \
asm volatile(" movsg psr,%0 \n" \
" andi %0,%3,%1 \n" \
" ori %1,%2,%1 \n" \
" movgs %1,psr \n" \
: "=r"(flags), "=r"(npsr) \
: "i" (PSR_PIL_14), "i" (~PSR_PIL) \
: "memory"); \
} while (0)
#define __arch_local_irq_restore(flags) \
do { \
typecheck(unsigned long, flags); \
asm volatile(" movgs %0,psr \n" \
: \
: "r" (flags) \
: "memory"); \
} while (0)
#define __arch_irqs_disabled() \
((__get_PSR() & PSR_PIL) >= PSR_PIL_14)
#endif /* _ASM_IRQFLAGS_H */

1
arch/frv/include/asm/kdebug.h
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@ -1 +0,0 @@
#include <asm-generic/kdebug.h>

8
arch/frv/include/asm/kmap_types.h
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@ -1,8 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_KMAP_TYPES_H
#define _ASM_KMAP_TYPES_H
#define KM_TYPE_NR 17
#endif

7
arch/frv/include/asm/linkage.h
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@ -1,7 +0,0 @@
#ifndef __ASM_LINKAGE_H
#define __ASM_LINKAGE_H
#define __ALIGN .align 4
#define __ALIGN_STR ".align 4"
#endif

7
arch/frv/include/asm/local.h
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@ -1,7 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_LOCAL_H
#define _ASM_LOCAL_H
#include <asm-generic/local.h>
#endif /* _ASM_LOCAL_H */

1
arch/frv/include/asm/local64.h
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@ -1 +0,0 @@
#include <asm-generic/local64.h>

302
arch/frv/include/asm/math-emu.h
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@ -1,302 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_MATH_EMU_H
#define _ASM_MATH_EMU_H
#include <asm/setup.h>
#include <linux/linkage.h>
/* Status Register bits */
/* accrued exception bits */
#define FPSR_AEXC_INEX 3
#define FPSR_AEXC_DZ 4
#define FPSR_AEXC_UNFL 5
#define FPSR_AEXC_OVFL 6
#define FPSR_AEXC_IOP 7
/* exception status bits */
#define FPSR_EXC_INEX1 8
#define FPSR_EXC_INEX2 9
#define FPSR_EXC_DZ 10
#define FPSR_EXC_UNFL 11
#define FPSR_EXC_OVFL 12
#define FPSR_EXC_OPERR 13
#define FPSR_EXC_SNAN 14
#define FPSR_EXC_BSUN 15
/* quotient byte, assumes big-endian, of course */
#define FPSR_QUOTIENT(fpsr) (*((signed char *) &(fpsr) + 1))
/* condition code bits */
#define FPSR_CC_NAN 24
#define FPSR_CC_INF 25
#define FPSR_CC_Z 26
#define FPSR_CC_NEG 27
/* Control register bits */
/* rounding mode */
#define FPCR_ROUND_RN 0 /* round to nearest/even */
#define FPCR_ROUND_RZ 1 /* round to zero */
#define FPCR_ROUND_RM 2 /* minus infinity */
#define FPCR_ROUND_RP 3 /* plus infinity */
/* rounding precision */
#define FPCR_PRECISION_X 0 /* long double */
#define FPCR_PRECISION_S 1 /* double */
#define FPCR_PRECISION_D 2 /* float */
/* Flags to select the debugging output */
#define PDECODE 0
#define PEXECUTE 1
#define PCONV 2
#define PNORM 3
#define PREGISTER 4
#define PINSTR 5
#define PUNIMPL 6
#define PMOVEM 7
#define PMDECODE (1<<PDECODE)
#define PMEXECUTE (1<<PEXECUTE)
#define PMCONV (1<<PCONV)
#define PMNORM (1<<PNORM)
#define PMREGISTER (1<<PREGISTER)
#define PMINSTR (1<<PINSTR)
#define PMUNIMPL (1<<PUNIMPL)
#define PMMOVEM (1<<PMOVEM)
#ifndef __ASSEMBLY__
#include <linux/kernel.h>
#include <linux/sched.h>
union fp_mant64 {
unsigned long long m64;
unsigned long m32[2];
};
union fp_mant128 {
unsigned long long m64[2];
unsigned long m32[4];
};
/* internal representation of extended fp numbers */
struct fp_ext {
unsigned char lowmant;
unsigned char sign;
unsigned short exp;
union fp_mant64 mant;
};
/* C representation of FPU registers */
/* NOTE: if you change this, you have to change the assembler offsets
below and the size in <asm/fpu.h>, too */
struct fp_data {
struct fp_ext fpreg[8];
unsigned int fpcr;
unsigned int fpsr;
unsigned int fpiar;
unsigned short prec;
unsigned short rnd;
struct fp_ext temp[2];
};
#if FPU_EMU_DEBUG
extern unsigned int fp_debugprint;
#define dprint(bit, fmt, args...) ({ \
if (fp_debugprint & (1 << (bit))) \
printk(fmt, ## args); \
})
#else
#define dprint(bit, fmt, args...)
#endif
#define uprint(str) ({ \
static int __count = 3; \
\
if (__count > 0) { \
printk("You just hit an unimplemented " \
"fpu instruction (%s)\n", str); \
printk("Please report this to ....\n"); \
__count--; \
} \
})
#define FPDATA ((struct fp_data *)current->thread.fp)
#else /* __ASSEMBLY__ */
#define FPDATA %a2
/* offsets from the base register to the floating point data in the task struct */
#define FPD_FPREG (TASK_THREAD+THREAD_FPREG+0)
#define FPD_FPCR (TASK_THREAD+THREAD_FPREG+96)
#define FPD_FPSR (TASK_THREAD+THREAD_FPREG+100)
#define FPD_FPIAR (TASK_THREAD+THREAD_FPREG+104)
#define FPD_PREC (TASK_THREAD+THREAD_FPREG+108)
#define FPD_RND (TASK_THREAD+THREAD_FPREG+110)
#define FPD_TEMPFP1 (TASK_THREAD+THREAD_FPREG+112)
#define FPD_TEMPFP2 (TASK_THREAD+THREAD_FPREG+124)
#define FPD_SIZEOF (TASK_THREAD+THREAD_FPREG+136)
/* offsets on the stack to access saved registers,
* these are only used during instruction decoding
* where we always know how deep we're on the stack.
*/
#define FPS_DO (PT_D0)
#define FPS_D1 (PT_D1)
#define FPS_D2 (PT_D2)
#define FPS_A0 (PT_A0)
#define FPS_A1 (PT_A1)
#define FPS_A2 (PT_A2)
#define FPS_SR (PT_SR)
#define FPS_PC (PT_PC)
#define FPS_EA (PT_PC+6)
#define FPS_PC2 (PT_PC+10)
.macro fp_get_fp_reg
lea (FPD_FPREG,FPDATA,%d0.w*4),%a0
lea (%a0,%d0.w*8),%a0
.endm
/* Macros used to get/put the current program counter.
* 020/030 use a different stack frame then 040/060, for the
* 040/060 the return pc points already to the next location,
* so this only needs to be modified for jump instructions.
*/
.macro fp_get_pc dest
move.l (FPS_PC+4,%sp),\dest
.endm
.macro fp_put_pc src,jump=0
move.l \src,(FPS_PC+4,%sp)
.endm
.macro fp_get_instr_data f,s,dest,label
getuser \f,%sp@(FPS_PC+4)@(0),\dest,\label,%sp@(FPS_PC+4)
addq.l #\s,%sp@(FPS_PC+4)
.endm
.macro fp_get_instr_word dest,label,addr
fp_get_instr_data w,2,\dest,\label,\addr
.endm
.macro fp_get_instr_long dest,label,addr
fp_get_instr_data l,4,\dest,\label,\addr
.endm
/* These macros are used to read from/write to user space
* on error we jump to the fixup section, load the fault
* address into %a0 and jump to the exit.
* (derived from <asm/uaccess.h>)
*/
.macro getuser size,src,dest,label,addr
| printf ,"[\size<%08x]",1,\addr
.Lu1\@: moves\size \src,\dest
.section .fixup,"ax"
.even
.Lu2\@: move.l \addr,%a0
jra \label
.previous
.section __ex_table,"a"
.align 4
.long .Lu1\@,.Lu2\@
.previous
.endm
.macro putuser size,src,dest,label,addr
| printf ,"[\size>%08x]",1,\addr
.Lu1\@: moves\size \src,\dest
.Lu2\@:
.section .fixup,"ax"
.even
.Lu3\@: move.l \addr,%a0
jra \label
.previous
.section __ex_table,"a"
.align 4
.long .Lu1\@,.Lu3\@
.long .Lu2\@,.Lu3\@
.previous
.endm
.macro movestack nr,arg1,arg2,arg3,arg4,arg5
.if \nr
movestack (\nr-1),\arg2,\arg3,\arg4,\arg5
move.l \arg1,-(%sp)
.endif
.endm
.macro printf bit=-1,string,nr=0,arg1,arg2,arg3,arg4,arg5
#ifdef FPU_EMU_DEBUG
.data
.Lpdata\@:
.string "\string"
.previous
movem.l %d0/%d1/%a0/%a1,-(%sp)
.if \bit+1
#if 0
moveq #\bit,%d0
andw #7,%d0
btst %d0,fp_debugprint+((31-\bit)/8)
#else
btst #\bit,fp_debugprint+((31-\bit)/8)
#endif
jeq .Lpskip\@
.endif
movestack \nr,\arg1,\arg2,\arg3,\arg4,\arg5
pea .Lpdata\@
jsr printk
lea ((\nr+1)*4,%sp),%sp
.Lpskip\@:
movem.l (%sp)+,%d0/%d1/%a0/%a1
#endif
.endm
.macro printx bit,fp
#ifdef FPU_EMU_DEBUG
movem.l %d0/%a0,-(%sp)
lea \fp,%a0
#if 0
moveq #'+',%d0
tst.w (%a0)
jeq .Lx1\@
moveq #'-',%d0
.Lx1\@: printf \bit," %c",1,%d0
move.l (4,%a0),%d0
bclr #31,%d0
jne .Lx2\@
printf \bit,"0."
jra .Lx3\@
.Lx2\@: printf \bit,"1."
.Lx3\@: printf \bit,"%08x%08x",2,%d0,%a0@(8)
move.w (2,%a0),%d0
ext.l %d0
printf \bit,"E%04x",1,%d0
#else
printf \bit," %08x%08x%08x",3,%a0@,%a0@(4),%a0@(8)
#endif
movem.l (%sp)+,%d0/%a0
#endif
.endm
.macro debug instr,args
#ifdef FPU_EMU_DEBUG
\instr \args
#endif
.endm
#endif /* __ASSEMBLY__ */
#endif /* _ASM_FRV_MATH_EMU_H */

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arch/frv/include/asm/mb-regs.h
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/* mb-regs.h: motherboard registers
*
* Copyright (C) 2003, 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_MB_REGS_H
#define _ASM_MB_REGS_H
#include <asm/cpu-irqs.h>
#include <asm/sections.h>
#include <asm/mem-layout.h>
#ifndef __ASSEMBLY__
/* gcc builtins, annotated */
unsigned long __builtin_read8(volatile void __iomem *);
unsigned long __builtin_read16(volatile void __iomem *);
unsigned long __builtin_read32(volatile void __iomem *);
void __builtin_write8(volatile void __iomem *, unsigned char);
void __builtin_write16(volatile void __iomem *, unsigned short);
void __builtin_write32(volatile void __iomem *, unsigned long);
#endif
#define __region_IO KERNEL_IO_START /* the region from 0xe0000000 to 0xffffffff has suitable
* protection laid over the top for use in memory-mapped
* I/O
*/
#define __region_CS0 0xff000000 /* Boot ROMs area */
#ifdef CONFIG_MB93091_VDK
/*
* VDK motherboard and CPU card specific stuff
*/
#include <asm/mb93091-fpga-irqs.h>
#define IRQ_CPU_MB93493_0 IRQ_CPU_EXTERNAL0
#define IRQ_CPU_MB93493_1 IRQ_CPU_EXTERNAL1
#define __region_CS2 0xe0000000 /* SLBUS/PCI I/O space */
#define __region_CS2_M 0x0fffffff /* mask */
#define __region_CS2_C 0x00000000 /* control */
#define __region_CS5 0xf0000000 /* MB93493 CSC area (DAV daughter board) */
#define __region_CS5_M 0x00ffffff
#define __region_CS5_C 0x00010000
#define __region_CS7 0xf1000000 /* CB70 CPU-card PCMCIA port I/O space */
#define __region_CS7_M 0x00ffffff
#define __region_CS7_C 0x00410701
#define __region_CS1 0xfc000000 /* SLBUS/PCI bridge control registers */
#define __region_CS1_M 0x000fffff
#define __region_CS1_C 0x00000000
#define __region_CS6 0xfc100000 /* CB70 CPU-card DM9000 LAN I/O space */
#define __region_CS6_M 0x000fffff
#define __region_CS6_C 0x00400707
#define __region_CS3 0xfc200000 /* MB93493 CSR area (DAV daughter board) */
#define __region_CS3_M 0x000fffff
#define __region_CS3_C 0xc8100000
#define __region_CS4 0xfd000000 /* CB70 CPU-card extra flash space */
#define __region_CS4_M 0x00ffffff
#define __region_CS4_C 0x00000f07
#define __region_PCI_IO (__region_CS2 + 0x04000000UL)
#define __region_PCI_MEM (__region_CS2 + 0x08000000UL)
#define __flush_PCI_writes() \
do { \
__builtin_write8((volatile void __iomem *) __region_PCI_MEM, 0); \
} while(0)
#define __is_PCI_IO(addr) \
(((unsigned long)(addr) >> 24) - (__region_PCI_IO >> 24) < (0x04000000UL >> 24))
#define __is_PCI_MEM(addr) \
((unsigned long)(addr) - __region_PCI_MEM < 0x08000000UL)
#define __is_PCI_addr(addr) \
((unsigned long)(addr) - __region_PCI_IO < 0x0c000000UL)
#define __get_CLKSW() ({ *(volatile unsigned long *)(__region_CS2 + 0x0130000cUL) & 0xffUL; })
#define __get_CLKIN() (__get_CLKSW() * 125U * 100000U / 24U)
#ifndef __ASSEMBLY__
extern int __nongprelbss mb93090_mb00_detected;
#endif
#define __addr_LEDS() (__region_CS2 + 0x01200004UL)
#ifdef CONFIG_MB93090_MB00
#define __set_LEDS(X) \
do { \
if (mb93090_mb00_detected) \
__builtin_write32((void __iomem *) __addr_LEDS(), ~(X)); \
} while (0)
#else
#define __set_LEDS(X)
#endif
#define __addr_LCD() (__region_CS2 + 0x01200008UL)
#define __get_LCD(B) __builtin_read32((volatile void __iomem *) (B))
#define __set_LCD(B,X) __builtin_write32((volatile void __iomem *) (B), (X))
#define LCD_D 0x000000ff /* LCD data bus */
#define LCD_RW 0x00000100 /* LCD R/W signal */
#define LCD_RS 0x00000200 /* LCD Register Select */
#define LCD_E 0x00000400 /* LCD Start Enable Signal */
#define LCD_CMD_CLEAR (LCD_E|0x001)
#define LCD_CMD_HOME (LCD_E|0x002)
#define LCD_CMD_CURSOR_INC (LCD_E|0x004)
#define LCD_CMD_SCROLL_INC (LCD_E|0x005)
#define LCD_CMD_CURSOR_DEC (LCD_E|0x006)
#define LCD_CMD_SCROLL_DEC (LCD_E|0x007)
#define LCD_CMD_OFF (LCD_E|0x008)
#define LCD_CMD_ON(CRSR,BLINK) (LCD_E|0x00c|(CRSR<<1)|BLINK)
#define LCD_CMD_CURSOR_MOVE_L (LCD_E|0x010)
#define LCD_CMD_CURSOR_MOVE_R (LCD_E|0x014)
#define LCD_CMD_DISPLAY_SHIFT_L (LCD_E|0x018)
#define LCD_CMD_DISPLAY_SHIFT_R (LCD_E|0x01c)
#define LCD_CMD_FUNCSET(DL,N,F) (LCD_E|0x020|(DL<<4)|(N<<3)|(F<<2))
#define LCD_CMD_SET_CG_ADDR(X) (LCD_E|0x040|X)
#define LCD_CMD_SET_DD_ADDR(X) (LCD_E|0x080|X)
#define LCD_CMD_READ_BUSY (LCD_E|LCD_RW)
#define LCD_DATA_WRITE(X) (LCD_E|LCD_RS|(X))
#define LCD_DATA_READ (LCD_E|LCD_RS|LCD_RW)
#else
/*
* PDK unit specific stuff
*/
#include <asm/mb93093-fpga-irqs.h>
#define IRQ_CPU_MB93493_0 IRQ_CPU_EXTERNAL0
#define IRQ_CPU_MB93493_1 IRQ_CPU_EXTERNAL1
#define __region_CS5 0xf0000000 /* MB93493 CSC area (DAV daughter board) */
#define __region_CS5_M 0x00ffffff /* mask */
#define __region_CS5_C 0x00010000 /* control */
#define __region_CS2 0x20000000 /* FPGA registers */
#define __region_CS2_M 0x000fffff
#define __region_CS2_C 0x00000000
#define __region_CS1 0xfc100000 /* LAN registers */
#define __region_CS1_M 0x000fffff
#define __region_CS1_C 0x00010404
#define __region_CS3 0xfc200000 /* MB93493 CSR area (DAV daughter board) */
#define __region_CS3_M 0x000fffff
#define __region_CS3_C 0xc8000000
#define __region_CS4 0xfd000000 /* extra ROMs area */
#define __region_CS4_M 0x00ffffff
#define __region_CS4_C 0x00000f07
#define __region_CS6 0xfe000000 /* not used - hide behind CPU resource I/O regs */
#define __region_CS6_M 0x000fffff
#define __region_CS6_C 0x00000f07
#define __region_CS7 0xfe000000 /* not used - hide behind CPU resource I/O regs */
#define __region_CS7_M 0x000fffff
#define __region_CS7_C 0x00000f07
#define __is_PCI_IO(addr) 0 /* no PCI */
#define __is_PCI_MEM(addr) 0
#define __is_PCI_addr(addr) 0
#define __region_PCI_IO 0
#define __region_PCI_MEM 0
#define __flush_PCI_writes() do { } while(0)
#define __get_CLKSW() 0UL
#define __get_CLKIN() 66000000UL
#define __addr_LEDS() (__region_CS2 + 0x00000023UL)
#define __set_LEDS(X) __builtin_write8((volatile void __iomem *) __addr_LEDS(), (X))
#define __addr_FPGATR() (__region_CS2 + 0x00000030UL)
#define __set_FPGATR(X) __builtin_write32((volatile void __iomem *) __addr_FPGATR(), (X))
#define __get_FPGATR() __builtin_read32((volatile void __iomem *) __addr_FPGATR())
#define MB93093_FPGA_FPGATR_AUDIO_CLK 0x00000003
#define __set_FPGATR_AUDIO_CLK(V) \
__set_FPGATR((__get_FPGATR() & ~MB93093_FPGA_FPGATR_AUDIO_CLK) | (V))
#define MB93093_FPGA_FPGATR_AUDIO_CLK_OFF 0x0
#define MB93093_FPGA_FPGATR_AUDIO_CLK_11MHz 0x1
#define MB93093_FPGA_FPGATR_AUDIO_CLK_12MHz 0x2
#define MB93093_FPGA_FPGATR_AUDIO_CLK_02MHz 0x3
#define MB93093_FPGA_SWR_PUSHSWMASK (0x1F<<26)
#define MB93093_FPGA_SWR_PUSHSW4 (1<<29)
#define __addr_FPGA_SWR ((volatile void __iomem *)(__region_CS2 + 0x28UL))
#define __get_FPGA_PUSHSW1_5() (__builtin_read32(__addr_FPGA_SWR) & MB93093_FPGA_SWR_PUSHSWMASK)
#endif
#endif /* _ASM_MB_REGS_H */

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arch/frv/include/asm/mb86943a.h
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/* mb86943a.h: MB86943 SPARClite <-> PCI bridge registers
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_MB86943A_H
#define _ASM_MB86943A_H
#include <asm/mb-regs.h>
#define __reg_MB86943_sl_ctl *(volatile uint32_t *) (__region_CS1 + 0x00)
#define MB86943_SL_CTL_BUS_WIDTH_64 0x00000001
#define MB86943_SL_CTL_AS_HOST 0x00000002
#define MB86943_SL_CTL_DRCT_MASTER_SWAP 0x00000004
#define MB86943_SL_CTL_DRCT_SLAVE_SWAP 0x00000008
#define MB86943_SL_CTL_PCI_CONFIG_SWAP 0x00000010
#define MB86943_SL_CTL_ECS0_ENABLE 0x00000020
#define MB86943_SL_CTL_ECS1_ENABLE 0x00000040
#define MB86943_SL_CTL_ECS2_ENABLE 0x00000080
#define __reg_MB86943_ecs_ctl(N) *(volatile uint32_t *) (__region_CS1 + 0x08 + (0x08*(N)))
#define __reg_MB86943_ecs_range(N) *(volatile uint32_t *) (__region_CS1 + 0x20 + (0x10*(N)))
#define __reg_MB86943_ecs_base(N) *(volatile uint32_t *) (__region_CS1 + 0x28 + (0x10*(N)))
#define __reg_MB86943_sl_pci_io_range *(volatile uint32_t *) (__region_CS1 + 0x50)
#define __reg_MB86943_sl_pci_io_base *(volatile uint32_t *) (__region_CS1 + 0x58)
#define __reg_MB86943_sl_pci_mem_range *(volatile uint32_t *) (__region_CS1 + 0x60)
#define __reg_MB86943_sl_pci_mem_base *(volatile uint32_t *) (__region_CS1 + 0x68)
#define __reg_MB86943_pci_sl_io_base *(volatile uint32_t *) (__region_CS1 + 0x70)
#define __reg_MB86943_pci_sl_mem_base *(volatile uint32_t *) (__region_CS1 + 0x78)
#define __reg_MB86943_pci_arbiter *(volatile uint32_t *) (__region_CS2 + 0x01300014)
#define MB86943_PCIARB_EN 0x00000001
#endif /* _ASM_MB86943A_H */

42
arch/frv/include/asm/mb93091-fpga-irqs.h
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/* mb93091-fpga-irqs.h: MB93091 CPU board FPGA IRQs
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_MB93091_FPGA_IRQS_H
#define _ASM_MB93091_FPGA_IRQS_H
#include <asm/irq.h>
#ifndef __ASSEMBLY__
/* IRQ IDs presented to drivers */
enum {
IRQ_FPGA__UNUSED = IRQ_BASE_FPGA,
IRQ_FPGA_SYSINT_BUS_EXPANSION_1,
IRQ_FPGA_SL_BUS_EXPANSION_2,
IRQ_FPGA_PCI_INTD,
IRQ_FPGA_PCI_INTC,
IRQ_FPGA_PCI_INTB,
IRQ_FPGA_PCI_INTA,
IRQ_FPGA_SL_BUS_EXPANSION_7,
IRQ_FPGA_SYSINT_BUS_EXPANSION_8,
IRQ_FPGA_SL_BUS_EXPANSION_9,
IRQ_FPGA_MB86943_PCI_INTA,
IRQ_FPGA_MB86943_SLBUS_SIDE,
IRQ_FPGA_RTL8029_INTA,
IRQ_FPGA_SYSINT_BUS_EXPANSION_13,
IRQ_FPGA_SL_BUS_EXPANSION_14,
IRQ_FPGA_NMI,
};
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_MB93091_FPGA_IRQS_H */

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arch/frv/include/asm/mb93093-fpga-irqs.h
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/* mb93093-fpga-irqs.h: MB93093 CPU board FPGA IRQs
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_MB93093_FPGA_IRQS_H
#define _ASM_MB93093_FPGA_IRQS_H
#include <asm/irq.h>
#ifndef __ASSEMBLY__
/* IRQ IDs presented to drivers */
enum {
IRQ_FPGA_PUSH_BUTTON_SW1_5 = IRQ_BASE_FPGA + 8,
IRQ_FPGA_ROCKER_C_SW8 = IRQ_BASE_FPGA + 9,
IRQ_FPGA_ROCKER_C_SW9 = IRQ_BASE_FPGA + 10,
};
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_MB93093_FPGA_IRQS_H */

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arch/frv/include/asm/mb93493-irqs.h
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/* mb93493-irqs.h: MB93493 companion chip IRQs
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_MB93493_IRQS_H
#define _ASM_MB93493_IRQS_H
#include <asm/irq.h>
#ifndef __ASSEMBLY__
/* IRQ IDs presented to drivers */
enum {
IRQ_MB93493_VDC = IRQ_BASE_MB93493 + 0,
IRQ_MB93493_VCC = IRQ_BASE_MB93493 + 1,
IRQ_MB93493_AUDIO_OUT = IRQ_BASE_MB93493 + 2,
IRQ_MB93493_I2C_0 = IRQ_BASE_MB93493 + 3,
IRQ_MB93493_I2C_1 = IRQ_BASE_MB93493 + 4,
IRQ_MB93493_USB = IRQ_BASE_MB93493 + 5,
IRQ_MB93493_LOCAL_BUS = IRQ_BASE_MB93493 + 7,
IRQ_MB93493_PCMCIA = IRQ_BASE_MB93493 + 8,
IRQ_MB93493_GPIO = IRQ_BASE_MB93493 + 9,
IRQ_MB93493_AUDIO_IN = IRQ_BASE_MB93493 + 10,
};
/* IRQ multiplexor mappings */
#define ROUTE_VIA_IRQ0 0 /* route IRQ by way of CPU external IRQ 0 */
#define ROUTE_VIA_IRQ1 1 /* route IRQ by way of CPU external IRQ 1 */
#define IRQ_MB93493_VDC_ROUTE ROUTE_VIA_IRQ0
#define IRQ_MB93493_VCC_ROUTE ROUTE_VIA_IRQ1
#define IRQ_MB93493_AUDIO_OUT_ROUTE ROUTE_VIA_IRQ1
#define IRQ_MB93493_I2C_0_ROUTE ROUTE_VIA_IRQ1
#define IRQ_MB93493_I2C_1_ROUTE ROUTE_VIA_IRQ1
#define IRQ_MB93493_USB_ROUTE ROUTE_VIA_IRQ1
#define IRQ_MB93493_LOCAL_BUS_ROUTE ROUTE_VIA_IRQ1
#define IRQ_MB93493_PCMCIA_ROUTE ROUTE_VIA_IRQ1
#define IRQ_MB93493_GPIO_ROUTE ROUTE_VIA_IRQ1
#define IRQ_MB93493_AUDIO_IN_ROUTE ROUTE_VIA_IRQ1
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_MB93493_IRQS_H */

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arch/frv/include/asm/mb93493-regs.h
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/* mb93493-regs.h: MB93493 companion chip registers
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_MB93493_REGS_H
#define _ASM_MB93493_REGS_H
#include <asm/mb-regs.h>
#include <asm/mb93493-irqs.h>
#define __addr_MB93493(X) ((volatile unsigned long *)(__region_CS3 + (X)))
#define __get_MB93493(X) ({ *(volatile unsigned long *)(__region_CS3 + (X)); })
#define __set_MB93493(X,V) \
do { \
*(volatile unsigned long *)(__region_CS3 + (X)) = (V); mb(); \
} while(0)
#define __get_MB93493_STSR(X) __get_MB93493(0x3c0 + (X) * 4)
#define __set_MB93493_STSR(X,V) __set_MB93493(0x3c0 + (X) * 4, (V))
#define MB93493_STSR_EN
#define __addr_MB93493_IQSR(X) __addr_MB93493(0x3d0 + (X) * 4)
#define __get_MB93493_IQSR(X) __get_MB93493(0x3d0 + (X) * 4)
#define __set_MB93493_IQSR(X,V) __set_MB93493(0x3d0 + (X) * 4, (V))
#define __get_MB93493_DQSR(X) __get_MB93493(0x3e0 + (X) * 4)
#define __set_MB93493_DQSR(X,V) __set_MB93493(0x3e0 + (X) * 4, (V))
#define __get_MB93493_LBSER() __get_MB93493(0x3f0)
#define __set_MB93493_LBSER(V) __set_MB93493(0x3f0, (V))
#define MB93493_LBSER_VDC 0x00010000
#define MB93493_LBSER_VCC 0x00020000
#define MB93493_LBSER_AUDIO 0x00040000
#define MB93493_LBSER_I2C_0 0x00080000
#define MB93493_LBSER_I2C_1 0x00100000
#define MB93493_LBSER_USB 0x00200000
#define MB93493_LBSER_GPIO 0x00800000
#define MB93493_LBSER_PCMCIA 0x01000000
#define __get_MB93493_LBSR() __get_MB93493(0x3fc)
#define __set_MB93493_LBSR(V) __set_MB93493(0x3fc, (V))
/*
* video display controller
*/
#define __get_MB93493_VDC(X) __get_MB93493(MB93493_VDC_##X)
#define __set_MB93493_VDC(X,V) __set_MB93493(MB93493_VDC_##X, (V))
#define MB93493_VDC_RCURSOR 0x140 /* cursor position */
#define MB93493_VDC_RCT1 0x144 /* cursor colour 1 */
#define MB93493_VDC_RCT2 0x148 /* cursor colour 2 */
#define MB93493_VDC_RHDC 0x150 /* horizontal display period */
#define MB93493_VDC_RH_MARGINS 0x154 /* horizontal margin sizes */
#define MB93493_VDC_RVDC 0x158 /* vertical display period */
#define MB93493_VDC_RV_MARGINS 0x15c /* vertical margin sizes */
#define MB93493_VDC_RC 0x170 /* VDC control */
#define MB93493_VDC_RCLOCK 0x174 /* clock divider, DMA req delay */
#define MB93493_VDC_RBLACK 0x178 /* black insert sizes */
#define MB93493_VDC_RS 0x17c /* VDC status */
#define __addr_MB93493_VDC_BCI(X) ({ (volatile unsigned long *)(__region_CS3 + 0x000 + (X)); })
#define __addr_MB93493_VDC_TPO(X) (__region_CS3 + 0x1c0 + (X))
#define VDC_TPO_WIDTH 32
#define VDC_RC_DSR 0x00000080 /* VDC master reset */
#define VDC_RS_IT 0x00060000 /* interrupt indicators */
#define VDC_RS_IT_UNDERFLOW 0x00040000 /* - underflow event */
#define VDC_RS_IT_VSYNC 0x00020000 /* - VSYNC event */
#define VDC_RS_DFI 0x00010000 /* current interlace field number */
#define VDC_RS_DFI_TOP 0x00000000 /* - top field */
#define VDC_RS_DFI_BOTTOM 0x00010000 /* - bottom field */
#define VDC_RS_DCSR 0x00000010 /* cursor state */
#define VDC_RS_DCM 0x00000003 /* display mode */
#define VDC_RS_DCM_DISABLED 0x00000000 /* - display disabled */
#define VDC_RS_DCM_STOPPED 0x00000001 /* - VDC stopped */
#define VDC_RS_DCM_FREERUNNING 0x00000002 /* - VDC free-running */
#define VDC_RS_DCM_TRANSFERRING 0x00000003 /* - data being transferred to VDC */
/*
* video capture controller
*/
#define __get_MB93493_VCC(X) __get_MB93493(MB93493_VCC_##X)
#define __set_MB93493_VCC(X,V) __set_MB93493(MB93493_VCC_##X, (V))
#define MB93493_VCC_RREDUCT 0x104 /* reduction rate */
#define MB93493_VCC_RHY 0x108 /* horizontal brightness filter coefficients */
#define MB93493_VCC_RHC 0x10c /* horizontal colour-difference filter coefficients */
#define MB93493_VCC_RHSIZE 0x110 /* horizontal cycle sizes */
#define MB93493_VCC_RHBC 0x114 /* horizontal back porch size */
#define MB93493_VCC_RVCC 0x118 /* vertical capture period */
#define MB93493_VCC_RVBC 0x11c /* vertical back porch period */
#define MB93493_VCC_RV 0x120 /* vertical filter coefficients */
#define MB93493_VCC_RDTS 0x128 /* DMA transfer size */
#define MB93493_VCC_RDTS_4B 0x01000000 /* 4-byte transfer */
#define MB93493_VCC_RDTS_32B 0x03000000 /* 32-byte transfer */
#define MB93493_VCC_RDTS_SHIFT 24
#define MB93493_VCC_RCC 0x130 /* VCC control */
#define MB93493_VCC_RIS 0x134 /* VCC interrupt status */
#define __addr_MB93493_VCC_TPI(X) (__region_CS3 + 0x180 + (X))
#define VCC_RHSIZE_RHCC 0x000007ff
#define VCC_RHSIZE_RHCC_SHIFT 0
#define VCC_RHSIZE_RHTCC 0x0fff0000
#define VCC_RHSIZE_RHTCC_SHIFT 16
#define VCC_RVBC_RVBC 0x00003f00
#define VCC_RVBC_RVBC_SHIFT 8
#define VCC_RREDUCT_RHR 0x07ff0000
#define VCC_RREDUCT_RHR_SHIFT 16
#define VCC_RREDUCT_RVR 0x000007ff
#define VCC_RREDUCT_RVR_SHIFT 0
#define VCC_RCC_CE 0x00000001 /* VCC enable */
#define VCC_RCC_CS 0x00000002 /* request video capture start */
#define VCC_RCC_CPF 0x0000000c /* pixel format */
#define VCC_RCC_CPF_YCBCR_16 0x00000000 /* - YCbCr 4:2:2 16-bit format */
#define VCC_RCC_CPF_RGB 0x00000004 /* - RGB 4:4:4 format */
#define VCC_RCC_CPF_YCBCR_24 0x00000008 /* - YCbCr 4:2:2 24-bit format */
#define VCC_RCC_CPF_BT656 0x0000000c /* - ITU R-BT.656 format */
#define VCC_RCC_CPF_SHIFT 2
#define VCC_RCC_CSR 0x00000080 /* request reset */
#define VCC_RCC_HSIP 0x00000100 /* HSYNC polarity */
#define VCC_RCC_HSIP_LOACT 0x00000000 /* - low active */
#define VCC_RCC_HSIP_HIACT 0x00000100 /* - high active */
#define VCC_RCC_VSIP 0x00000200 /* VSYNC polarity */
#define VCC_RCC_VSIP_LOACT 0x00000000 /* - low active */
#define VCC_RCC_VSIP_HIACT 0x00000200 /* - high active */
#define VCC_RCC_CIE 0x00000800 /* interrupt enable */
#define VCC_RCC_CFP 0x00001000 /* RGB pixel packing */
#define VCC_RCC_CFP_4TO3 0x00000000 /* - pack 4 pixels into 3 words */
#define VCC_RCC_CFP_1TO1 0x00001000 /* - pack 1 pixel into 1 words */
#define VCC_RCC_CSM 0x00006000 /* interlace specification */
#define VCC_RCC_CSM_ONEPASS 0x00002000 /* - non-interlaced */
#define VCC_RCC_CSM_INTERLACE 0x00004000 /* - interlaced */
#define VCC_RCC_CSM_SHIFT 13
#define VCC_RCC_ES 0x00008000 /* capture start polarity */
#define VCC_RCC_ES_NEG 0x00000000 /* - negative edge */
#define VCC_RCC_ES_POS 0x00008000 /* - positive edge */
#define VCC_RCC_IFI 0x00080000 /* inferlace field evaluation reverse */
#define VCC_RCC_FDTS 0x00300000 /* interlace field start */
#define VCC_RCC_FDTS_3_8 0x00000000 /* - 3/8 of horizontal entire cycle */
#define VCC_RCC_FDTS_1_4 0x00100000 /* - 1/4 of horizontal entire cycle */
#define VCC_RCC_FDTS_7_16 0x00200000 /* - 7/16 of horizontal entire cycle */
#define VCC_RCC_FDTS_SHIFT 20
#define VCC_RCC_MOV 0x00400000 /* test bit - always set to 1 */
#define VCC_RCC_STP 0x00800000 /* request video capture stop */
#define VCC_RCC_TO 0x01000000 /* input during top-field only */
#define VCC_RIS_VSYNC 0x01000000 /* VSYNC interrupt */
#define VCC_RIS_OV 0x02000000 /* overflow interrupt */
#define VCC_RIS_BOTTOM 0x08000000 /* interlace bottom field */
#define VCC_RIS_STARTED 0x10000000 /* capture started */
/*
* I2C
*/
#define MB93493_I2C_BSR 0x340 /* bus status */
#define MB93493_I2C_BCR 0x344 /* bus control */
#define MB93493_I2C_CCR 0x348 /* clock control */
#define MB93493_I2C_ADR 0x34c /* address */
#define MB93493_I2C_DTR 0x350 /* data */
#define MB93493_I2C_BC2R 0x35c /* bus control 2 */
#define __addr_MB93493_I2C(port,X) (__region_CS3 + MB93493_I2C_##X + ((port)*0x20))
#define __get_MB93493_I2C(port,X) __get_MB93493(MB93493_I2C_##X + ((port)*0x20))
#define __set_MB93493_I2C(port,X,V) __set_MB93493(MB93493_I2C_##X + ((port)*0x20), (V))
#define I2C_BSR_BB (1 << 7)
/*
* audio controller (I2S) registers
*/
#define __get_MB93493_I2S(X) __get_MB93493(MB93493_I2S_##X)
#define __set_MB93493_I2S(X,V) __set_MB93493(MB93493_I2S_##X, (V))
#define MB93493_I2S_ALDR 0x300 /* L-channel data */
#define MB93493_I2S_ARDR 0x304 /* R-channel data */
#define MB93493_I2S_APDR 0x308 /* 16-bit packed data */
#define MB93493_I2S_AISTR 0x310 /* status */
#define MB93493_I2S_AICR 0x314 /* control */
#define __addr_MB93493_I2S_ALDR(X) (__region_CS3 + MB93493_I2S_ALDR + (X))
#define __addr_MB93493_I2S_ARDR(X) (__region_CS3 + MB93493_I2S_ARDR + (X))
#define __addr_MB93493_I2S_APDR(X) (__region_CS3 + MB93493_I2S_APDR + (X))
#define __addr_MB93493_I2S_ADR(X) (__region_CS3 + 0x320 + (X))
#define I2S_AISTR_OTST 0x00000003 /* status of output data transfer */
#define I2S_AISTR_OTR 0x00000010 /* output transfer request pending */
#define I2S_AISTR_OUR 0x00000020 /* output FIFO underrun detected */
#define I2S_AISTR_OOR 0x00000040 /* output FIFO overrun detected */
#define I2S_AISTR_ODS 0x00000100 /* output DMA transfer size */
#define I2S_AISTR_ODE 0x00000400 /* output DMA transfer request enable */
#define I2S_AISTR_OTRIE 0x00001000 /* output transfer request interrupt enable */
#define I2S_AISTR_OURIE 0x00002000 /* output FIFO underrun interrupt enable */
#define I2S_AISTR_OORIE 0x00004000 /* output FIFO overrun interrupt enable */
#define I2S_AISTR__OUT_MASK 0x00007570
#define I2S_AISTR_ITST 0x00030000 /* status of input data transfer */
#define I2S_AISTR_ITST_SHIFT 16
#define I2S_AISTR_ITR 0x00100000 /* input transfer request pending */
#define I2S_AISTR_IUR 0x00200000 /* input FIFO underrun detected */
#define I2S_AISTR_IOR 0x00400000 /* input FIFO overrun detected */
#define I2S_AISTR_IDS 0x01000000 /* input DMA transfer size */
#define I2S_AISTR_IDE 0x04000000 /* input DMA transfer request enable */
#define I2S_AISTR_ITRIE 0x10000000 /* input transfer request interrupt enable */
#define I2S_AISTR_IURIE 0x20000000 /* input FIFO underrun interrupt enable */
#define I2S_AISTR_IORIE 0x40000000 /* input FIFO overrun interrupt enable */
#define I2S_AISTR__IN_MASK 0x75700000
#define I2S_AICR_MI 0x00000001 /* mono input requested */
#define I2S_AICR_AMI 0x00000002 /* relation between LRCKI/FS1 and SDI */
#define I2S_AICR_LRI 0x00000004 /* function of LRCKI pin */
#define I2S_AICR_SDMI 0x00000070 /* format of input audio data */
#define I2S_AICR_SDMI_SHIFT 4
#define I2S_AICR_CLI 0x00000080 /* input FIFO clearing control */
#define I2S_AICR_IM 0x00000300 /* input state control */
#define I2S_AICR_IM_SHIFT 8
#define I2S_AICR__IN_MASK 0x000003f7
#define I2S_AICR_MO 0x00001000 /* mono output requested */
#define I2S_AICR_AMO 0x00002000 /* relation between LRCKO/FS0 and SDO */
#define I2S_AICR_AMO_SHIFT 13
#define I2S_AICR_LRO 0x00004000 /* function of LRCKO pin */
#define I2S_AICR_SDMO 0x00070000 /* format of output audio data */
#define I2S_AICR_SDMO_SHIFT 16
#define I2S_AICR_CLO 0x00080000 /* output FIFO clearing control */
#define I2S_AICR_OM 0x00100000 /* output state control */
#define I2S_AICR__OUT_MASK 0x001f7000
#define I2S_AICR_DIV 0x03000000 /* frequency division rate */
#define I2S_AICR_DIV_SHIFT 24
#define I2S_AICR_FL 0x20000000 /* frame length */
#define I2S_AICR_FS 0x40000000 /* frame sync method */
#define I2S_AICR_ME 0x80000000 /* master enable */
/*
* PCMCIA
*/
#define __addr_MB93493_PCMCIA(X) ((volatile unsigned long *)(__region_CS5 + (X)))
/*
* GPIO
*/
#define __get_MB93493_GPIO_PDR(X) __get_MB93493(0x380 + (X) * 0xc0)
#define __set_MB93493_GPIO_PDR(X,V) __set_MB93493(0x380 + (X) * 0xc0, (V))
#define __get_MB93493_GPIO_GPDR(X) __get_MB93493(0x384 + (X) * 0xc0)
#define __set_MB93493_GPIO_GPDR(X,V) __set_MB93493(0x384 + (X) * 0xc0, (V))
#define __get_MB93493_GPIO_SIR(X) __get_MB93493(0x388 + (X) * 0xc0)
#define __set_MB93493_GPIO_SIR(X,V) __set_MB93493(0x388 + (X) * 0xc0, (V))
#define __get_MB93493_GPIO_SOR(X) __get_MB93493(0x38c + (X) * 0xc0)
#define __set_MB93493_GPIO_SOR(X,V) __set_MB93493(0x38c + (X) * 0xc0, (V))
#define __get_MB93493_GPIO_PDSR(X) __get_MB93493(0x390 + (X) * 0xc0)
#define __set_MB93493_GPIO_PDSR(X,V) __set_MB93493(0x390 + (X) * 0xc0, (V))
#define __get_MB93493_GPIO_PDCR(X) __get_MB93493(0x394 + (X) * 0xc0)
#define __set_MB93493_GPIO_PDCR(X,V) __set_MB93493(0x394 + (X) * 0xc0, (V))
#define __get_MB93493_GPIO_INTST(X) __get_MB93493(0x398 + (X) * 0xc0)
#define __set_MB93493_GPIO_INTST(X,V) __set_MB93493(0x398 + (X) * 0xc0, (V))
#define __get_MB93493_GPIO_IEHL(X) __get_MB93493(0x39c + (X) * 0xc0)
#define __set_MB93493_GPIO_IEHL(X,V) __set_MB93493(0x39c + (X) * 0xc0, (V))
#define __get_MB93493_GPIO_IELH(X) __get_MB93493(0x3a0 + (X) * 0xc0)
#define __set_MB93493_GPIO_IELH(X,V) __set_MB93493(0x3a0 + (X) * 0xc0, (V))
#endif /* _ASM_MB93493_REGS_H */

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arch/frv/include/asm/mem-layout.h
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/* mem-layout.h: memory layout
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_MEM_LAYOUT_H
#define _ASM_MEM_LAYOUT_H
#ifndef __ASSEMBLY__
#define __UL(X) ((unsigned long) (X))
#else
#define __UL(X) (X)
#endif
/*
* PAGE_SHIFT determines the page size
*/
#define PAGE_SHIFT 14
#ifndef __ASSEMBLY__
#define PAGE_SIZE (1UL << PAGE_SHIFT)
#else
#define PAGE_SIZE (1 << PAGE_SHIFT)
#endif
#define PAGE_MASK (~(PAGE_SIZE-1))
/*
* the slab must be aligned such that load- and store-double instructions don't
* fault if used
*/
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES
#define ARCH_SLAB_MINALIGN L1_CACHE_BYTES
/*****************************************************************************/
/*
* virtual memory layout from kernel's point of view
*/
#define PAGE_OFFSET ((unsigned long) &__page_offset)
#ifdef CONFIG_MMU
/* see Documentation/frv/mmu-layout.txt */
#define KERNEL_LOWMEM_START __UL(0xc0000000)
#define KERNEL_LOWMEM_END __UL(0xd0000000)
#define VMALLOC_START __UL(0xd0000000)
#define VMALLOC_END __UL(0xd8000000)
#define PKMAP_BASE __UL(0xd8000000)
#define PKMAP_END __UL(0xdc000000)
#define KMAP_ATOMIC_SECONDARY_FRAME __UL(0xdc000000)
#define KMAP_ATOMIC_PRIMARY_FRAME __UL(0xdd000000)
#endif
#define KERNEL_IO_START __UL(0xe0000000)
/*****************************************************************************/
/*
* memory layout from userspace's point of view
*/
#define BRK_BASE __UL(2 * 1024 * 1024 + PAGE_SIZE)
#define STACK_TOP __UL(2 * 1024 * 1024)
#define STACK_TOP_MAX __UL(0xc0000000)
/* userspace process size */
#ifdef CONFIG_MMU
#define TASK_SIZE (PAGE_OFFSET)
#else
#define TASK_SIZE __UL(0xFFFFFFFFUL)
#endif
/* base of area at which unspecified mmaps will start */
#ifdef CONFIG_BINFMT_ELF_FDPIC
#define TASK_UNMAPPED_BASE __UL(16 * 1024 * 1024)
#else
#define TASK_UNMAPPED_BASE __UL(TASK_SIZE / 3)
#endif
#endif /* _ASM_MEM_LAYOUT_H */

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arch/frv/include/asm/mmu.h
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/* mmu.h: memory management context for FR-V with or without MMU support
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_MMU_H
#define _ASM_MMU_H
typedef struct {
#ifdef CONFIG_MMU
struct list_head id_link; /* link in list of context ID owners */
unsigned short id; /* MMU context ID */
unsigned short id_busy; /* true if ID is in CXNR */
unsigned long itlb_cached_pge; /* [SCR0] PGE cached for insn TLB handler */
unsigned long itlb_ptd_mapping; /* [DAMR4] PTD mapping for itlb cached PGE */
unsigned long dtlb_cached_pge; /* [SCR1] PGE cached for data TLB handler */
unsigned long dtlb_ptd_mapping; /* [DAMR5] PTD mapping for dtlb cached PGE */
#else
unsigned long end_brk;
#endif
#ifdef CONFIG_BINFMT_ELF_FDPIC
unsigned long exec_fdpic_loadmap;
unsigned long interp_fdpic_loadmap;
#endif
} mm_context_t;
#ifdef CONFIG_MMU
extern int __nongpreldata cxn_pinned;
extern int cxn_pin_by_pid(pid_t pid);
#endif
#endif /* _ASM_MMU_H */

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arch/frv/include/asm/mmu_context.h
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/* mmu_context.h: MMU context management routines
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_MMU_CONTEXT_H
#define _ASM_MMU_CONTEXT_H
#include <asm/setup.h>
#include <asm/page.h>
#include <asm/pgalloc.h>
#include <asm-generic/mm_hooks.h>
static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
{
}
#ifdef CONFIG_MMU
extern int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
extern void change_mm_context(mm_context_t *old, mm_context_t *ctx, pgd_t *_pgd);
extern void destroy_context(struct mm_struct *mm);
#else
#define init_new_context(tsk, mm) ({ 0; })
#define change_mm_context(old, ctx, _pml4) do {} while(0)
#define destroy_context(mm) do {} while(0)
#endif
#define switch_mm(prev, next, tsk) \
do { \
if (prev != next) \
change_mm_context(&prev->context, &next->context, next->pgd); \
} while(0)
#define activate_mm(prev, next) \
do { \
change_mm_context(&prev->context, &next->context, next->pgd); \
} while(0)
#define deactivate_mm(tsk, mm) \
do { \
} while(0)
#endif

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arch/frv/include/asm/module.h
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/* module.h: FRV module stuff
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_MODULE_H
#define _ASM_MODULE_H
#include <asm-generic/module.h>
/*
* Include the architecture version.
*/
#define MODULE_ARCH_VERMAGIC __stringify(PROCESSOR_MODEL_NAME) " "
#endif /* _ASM_MODULE_H */

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arch/frv/include/asm/page.h
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_PAGE_H
#define _ASM_PAGE_H
#include <asm/virtconvert.h>
#include <asm/mem-layout.h>
#include <asm/sections.h>
#include <asm/setup.h>
#ifndef __ASSEMBLY__
#define clear_page(pgaddr) memset((pgaddr), 0, PAGE_SIZE)
#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
#define clear_user_page(pgaddr, vaddr, page) memset((pgaddr), 0, PAGE_SIZE)
#define copy_user_page(vto, vfrom, vaddr, topg) memcpy((vto), (vfrom), PAGE_SIZE)
/*
* These are used to make use of C type-checking..
*/
typedef struct { unsigned long pte; } pte_t;
typedef struct { unsigned long ste[64];} pmd_t;
typedef struct { pmd_t pue[1]; } pud_t;
typedef struct { pud_t pge[1]; } pgd_t;
typedef struct { unsigned long pgprot; } pgprot_t;
typedef struct page *pgtable_t;
#define pte_val(x) ((x).pte)
#define pmd_val(x) ((x).ste[0])
#define pud_val(x) ((x).pue[0])
#define pgd_val(x) ((x).pge[0])
#define pgprot_val(x) ((x).pgprot)
#define __pte(x) ((pte_t) { (x) } )
#define __pmd(x) ((pmd_t) { { (x) } } )
#define __pud(x) ((pud_t) { (x) } )
#define __pgd(x) ((pgd_t) { (x) } )
#define __pgprot(x) ((pgprot_t) { (x) } )
#define PTE_MASK PAGE_MASK
#define devmem_is_allowed(pfn) 1
#define __pa(vaddr) virt_to_phys((void *) (unsigned long) (vaddr))
#define __va(paddr) phys_to_virt((unsigned long) (paddr))
#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
extern unsigned long max_low_pfn;
extern unsigned long min_low_pfn;
extern unsigned long max_pfn;
#ifdef CONFIG_MMU
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#else
#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
#define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) < max_low_pfn)
#endif
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#define VM_DATA_DEFAULT_FLAGS \
(VM_READ | VM_WRITE | \
((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#endif /* __ASSEMBLY__ */
#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>
#endif /* _ASM_PAGE_H */

40
arch/frv/include/asm/pci.h
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@ -1,40 +0,0 @@
/* pci.h: FR-V specific PCI declarations
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
* - Derived from include/asm-m68k/pci.h
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_FRV_PCI_H
#define _ASM_FRV_PCI_H
#include <linux/mm.h>
#include <linux/scatterlist.h>
#include <asm-generic/pci.h>
#define pcibios_assign_all_busses() 0
#ifdef CONFIG_MMU
extern void *consistent_alloc(gfp_t gfp, size_t size, dma_addr_t *dma_handle);
extern void consistent_free(void *vaddr);
extern void consistent_sync(void *vaddr, size_t size, int direction);
extern void consistent_sync_page(struct page *page, unsigned long offset,
size_t size, int direction);
#endif
/* Return the index of the PCI controller for device PDEV. */
#define pci_controller_num(PDEV) (0)
/*
* These are pretty much arbitrary with the CoMEM implementation.
* We have the whole address space to ourselves.
*/
#define PCIBIOS_MIN_IO 0x100
#define PCIBIOS_MIN_MEM 0x00010000
#endif /* _ASM_FRV_PCI_H */

7
arch/frv/include/asm/percpu.h
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_PERCPU_H
#define __ASM_PERCPU_H
#include <asm-generic/percpu.h>
#endif /* __ASM_PERCPU_H */

15
arch/frv/include/asm/perf_event.h
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/* FRV performance event support
*
* Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef _ASM_PERF_EVENT_H
#define _ASM_PERF_EVENT_H
#endif /* _ASM_PERF_EVENT_H */

69
arch/frv/include/asm/pgalloc.h
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/* pgalloc.h: Page allocation routines for FRV
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Derived from:
* include/asm-m68knommu/pgalloc.h
* include/asm-i386/pgalloc.h
*/
#ifndef _ASM_PGALLOC_H
#define _ASM_PGALLOC_H
#include <asm/setup.h>
#include <asm/virtconvert.h>
#ifdef CONFIG_MMU
#define pmd_populate_kernel(mm, pmd, pte) __set_pmd(pmd, __pa(pte) | _PAGE_TABLE)
#define pmd_populate(MM, PMD, PAGE) \
do { \
__set_pmd((PMD), page_to_pfn(PAGE) << PAGE_SHIFT | _PAGE_TABLE); \
} while(0)
#define pmd_pgtable(pmd) pmd_page(pmd)
/*
* Allocate and free page tables.
*/
extern pgd_t *pgd_alloc(struct mm_struct *);
extern void pgd_free(struct mm_struct *mm, pgd_t *);
extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
extern pgtable_t pte_alloc_one(struct mm_struct *, unsigned long);
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
free_page((unsigned long)pte);
}
static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
{
pgtable_page_dtor(pte);
__free_page(pte);
}
#define __pte_free_tlb(tlb,pte,address) \
do { \
pgtable_page_dtor(pte); \
tlb_remove_page((tlb),(pte)); \
} while (0)
/*
* allocating and freeing a pmd is trivial: the 1-entry pmd is
* inside the pgd, so has no extra memory associated with it.
* (In the PAE case we free the pmds as part of the pgd.)
*/
#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *) 2); })
#define pmd_free(mm, x) do { } while (0)
#define __pmd_free_tlb(tlb,x,a) do { } while (0)
#endif /* CONFIG_MMU */
#endif /* _ASM_PGALLOC_H */

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arch/frv/include/asm/pgtable.h
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/* pgtable.h: FR-V page table mangling
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Derived from:
* include/asm-m68knommu/pgtable.h
* include/asm-i386/pgtable.h
*/
#ifndef _ASM_PGTABLE_H
#define _ASM_PGTABLE_H
#include <asm-generic/5level-fixup.h>
#include <asm/mem-layout.h>
#include <asm/setup.h>
#include <asm/processor.h>
#ifndef __ASSEMBLY__
#include <linux/threads.h>
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/sched.h>
struct vm_area_struct;
#endif
#ifndef __ASSEMBLY__
#if defined(CONFIG_HIGHPTE)
typedef unsigned long pte_addr_t;
#else
typedef pte_t *pte_addr_t;
#endif
#endif
/*****************************************************************************/
/*
* MMU-less operation case first
*/
#ifndef CONFIG_MMU
#define pgd_present(pgd) (1) /* pages are always present on NO_MM */
#define pgd_none(pgd) (0)
#define pgd_bad(pgd) (0)
#define pgd_clear(pgdp)
#define kern_addr_valid(addr) (1)
#define pmd_offset(a, b) ((void *) 0)
#define PAGE_NONE __pgprot(0) /* these mean nothing to NO_MM */
#define PAGE_SHARED __pgprot(0) /* these mean nothing to NO_MM */
#define PAGE_COPY __pgprot(0) /* these mean nothing to NO_MM */
#define PAGE_READONLY __pgprot(0) /* these mean nothing to NO_MM */
#define PAGE_KERNEL __pgprot(0) /* these mean nothing to NO_MM */
#define __swp_type(x) (0)
#define __swp_offset(x) (0)
#define __swp_entry(typ,off) ((swp_entry_t) { ((typ) | ((off) << 7)) })
#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
#define ZERO_PAGE(vaddr) ({ BUG(); NULL; })
#define swapper_pg_dir ((pgd_t *) NULL)
#define pgtable_cache_init() do {} while (0)
#include <asm-generic/pgtable.h>
#else /* !CONFIG_MMU */
/*****************************************************************************/
/*
* then MMU operation
*/
/*
* ZERO_PAGE is a global shared page that is always zero: used
* for zero-mapped memory areas etc..
*/
#ifndef __ASSEMBLY__
extern unsigned long empty_zero_page;
#define ZERO_PAGE(vaddr) virt_to_page(empty_zero_page)
#endif
/*
* we use 2-level page tables, folding the PMD (mid-level table) into the PGE (top-level entry)
* [see Documentation/frv/mmu-layout.txt]
*
* Page Directory:
* - Size: 16KB
* - 64 PGEs per PGD
* - Each PGE holds 1 PUD and covers 64MB
*
* Page Upper Directory:
* - Size: 256B
* - 1 PUE per PUD
* - Each PUE holds 1 PMD and covers 64MB
*
* Page Mid-Level Directory
* - Size: 256B
* - 1 PME per PMD
* - Each PME holds 64 STEs, all of which point to separate chunks of the same Page Table
* - All STEs are instantiated at the same time
*
* Page Table
* - Size: 16KB
* - 4096 PTEs per PT
* - Each Linux PT is subdivided into 64 FR451 PT's, each of which holds 64 entries
*
* Pages
* - Size: 4KB
*
* total PTEs
* = 1 PML4E * 64 PGEs * 1 PUEs * 1 PMEs * 4096 PTEs
* = 1 PML4E * 64 PGEs * 64 STEs * 64 PTEs/FR451-PT
* = 262144 (or 256 * 1024)
*/
#define PGDIR_SHIFT 26
#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
#define PGDIR_MASK (~(PGDIR_SIZE - 1))
#define PTRS_PER_PGD 64
#define __PAGETABLE_PUD_FOLDED
#define PUD_SHIFT 26
#define PTRS_PER_PUD 1
#define PUD_SIZE (1UL << PUD_SHIFT)
#define PUD_MASK (~(PUD_SIZE - 1))
#define PUE_SIZE 256
#define __PAGETABLE_PMD_FOLDED
#define PMD_SHIFT 26
#define PMD_SIZE (1UL << PMD_SHIFT)
#define PMD_MASK (~(PMD_SIZE - 1))
#define PTRS_PER_PMD 1
#define PME_SIZE 256
#define __frv_PT_SIZE 256
#define PTRS_PER_PTE 4096
#define USER_PGDS_IN_LAST_PML4 (TASK_SIZE / PGDIR_SIZE)
#define FIRST_USER_ADDRESS 0UL
#define USER_PGD_PTRS (PAGE_OFFSET >> PGDIR_SHIFT)
#define KERNEL_PGD_PTRS (PTRS_PER_PGD - USER_PGD_PTRS)
#define TWOLEVEL_PGDIR_SHIFT 26
#define BOOT_USER_PGD_PTRS (__PAGE_OFFSET >> TWOLEVEL_PGDIR_SHIFT)
#define BOOT_KERNEL_PGD_PTRS (PTRS_PER_PGD - BOOT_USER_PGD_PTRS)
#ifndef __ASSEMBLY__
extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
#define pte_ERROR(e) \
printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, (e).pte)
#define pmd_ERROR(e) \
printk("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pmd_val(e))
#define pud_ERROR(e) \
printk("%s:%d: bad pud %08lx.\n", __FILE__, __LINE__, pmd_val(pud_val(e)))
#define pgd_ERROR(e) \
printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pmd_val(pud_val(pgd_val(e))))
/*
* Certain architectures need to do special things when PTEs
* within a page table are directly modified. Thus, the following
* hook is made available.
*/
#define set_pte(pteptr, pteval) \
do { \
*(pteptr) = (pteval); \
asm volatile("dcf %M0" :: "U"(*pteptr)); \
} while(0)
#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
/*
* pgd_offset() returns a (pgd_t *)
* pgd_index() is used get the offset into the pgd page's array of pgd_t's;
*/
#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
/*
* a shortcut which implies the use of the kernel's pgd, instead
* of a process's
*/
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
/*
* The "pgd_xxx()" functions here are trivial for a folded two-level
* setup: the pud is never bad, and a pud always exists (as it's folded
* into the pgd entry)
*/
static inline int pgd_none(pgd_t pgd) { return 0; }
static inline int pgd_bad(pgd_t pgd) { return 0; }
static inline int pgd_present(pgd_t pgd) { return 1; }
static inline void pgd_clear(pgd_t *pgd) { }
#define pgd_populate(mm, pgd, pud) do { } while (0)
/*
* (puds are folded into pgds so this doesn't get actually called,
* but the define is needed for a generic inline function.)
*/
#define set_pgd(pgdptr, pgdval) \
do { \
memcpy((pgdptr), &(pgdval), sizeof(pgd_t)); \
asm volatile("dcf %M0" :: "U"(*(pgdptr))); \
} while(0)
static inline pud_t *pud_offset(pgd_t *pgd, unsigned long address)
{
return (pud_t *) pgd;
}
#define pgd_page(pgd) (pud_page((pud_t){ pgd }))
#define pgd_page_vaddr(pgd) (pud_page_vaddr((pud_t){ pgd }))
/*
* allocating and freeing a pud is trivial: the 1-entry pud is
* inside the pgd, so has no extra memory associated with it.
*/
#define pud_alloc_one(mm, address) NULL
#define pud_free(mm, x) do { } while (0)
#define __pud_free_tlb(tlb, x, address) do { } while (0)
/*
* The "pud_xxx()" functions here are trivial for a folded two-level
* setup: the pmd is never bad, and a pmd always exists (as it's folded
* into the pud entry)
*/
static inline int pud_none(pud_t pud) { return 0; }
static inline int pud_bad(pud_t pud) { return 0; }
static inline int pud_present(pud_t pud) { return 1; }
static inline void pud_clear(pud_t *pud) { }
#define pud_populate(mm, pmd, pte) do { } while (0)
/*
* (pmds are folded into puds so this doesn't get actually called,
* but the define is needed for a generic inline function.)
*/
#define set_pud(pudptr, pudval) set_pmd((pmd_t *)(pudptr), (pmd_t) { pudval })
#define pud_page(pud) (pmd_page((pmd_t){ pud }))
#define pud_page_vaddr(pud) (pmd_page_vaddr((pmd_t){ pud }))
/*
* (pmds are folded into pgds so this doesn't get actually called,
* but the define is needed for a generic inline function.)
*/
extern void __set_pmd(pmd_t *pmdptr, unsigned long __pmd);
#define set_pmd(pmdptr, pmdval) \
do { \
__set_pmd((pmdptr), (pmdval).ste[0]); \
} while(0)
#define __pmd_index(address) 0
static inline pmd_t *pmd_offset(pud_t *dir, unsigned long address)
{
return (pmd_t *) dir + __pmd_index(address);
}
#define pte_same(a, b) ((a).pte == (b).pte)
#define pte_page(x) (mem_map + ((unsigned long)(((x).pte >> PAGE_SHIFT))))
#define pte_none(x) (!(x).pte)
#define pte_pfn(x) ((unsigned long)(((x).pte >> PAGE_SHIFT)))
#define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
#define pfn_pmd(pfn, prot) __pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
#define VMALLOC_VMADDR(x) ((unsigned long) (x))
#endif /* !__ASSEMBLY__ */
/*
* control flags in AMPR registers and TLB entries
*/
#define _PAGE_BIT_PRESENT xAMPRx_V_BIT
#define _PAGE_BIT_WP DAMPRx_WP_BIT
#define _PAGE_BIT_NOCACHE xAMPRx_C_BIT
#define _PAGE_BIT_SUPER xAMPRx_S_BIT
#define _PAGE_BIT_ACCESSED xAMPRx_RESERVED8_BIT
#define _PAGE_BIT_DIRTY xAMPRx_M_BIT
#define _PAGE_BIT_NOTGLOBAL xAMPRx_NG_BIT
#define _PAGE_PRESENT xAMPRx_V
#define _PAGE_WP DAMPRx_WP
#define _PAGE_NOCACHE xAMPRx_C
#define _PAGE_SUPER xAMPRx_S
#define _PAGE_ACCESSED xAMPRx_RESERVED8 /* accessed if set */
#define _PAGE_DIRTY xAMPRx_M
#define _PAGE_NOTGLOBAL xAMPRx_NG
#define _PAGE_RESERVED_MASK (xAMPRx_RESERVED8 | xAMPRx_RESERVED13)
#define _PAGE_PROTNONE 0x000 /* If not present */
#define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
#define __PGPROT_BASE \
(_PAGE_PRESENT | xAMPRx_SS_16Kb | xAMPRx_D | _PAGE_NOTGLOBAL | _PAGE_ACCESSED)
#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
#define PAGE_SHARED __pgprot(__PGPROT_BASE)
#define PAGE_COPY __pgprot(__PGPROT_BASE | _PAGE_WP)
#define PAGE_READONLY __pgprot(__PGPROT_BASE | _PAGE_WP)
#define __PAGE_KERNEL (__PGPROT_BASE | _PAGE_SUPER | _PAGE_DIRTY)
#define __PAGE_KERNEL_NOCACHE (__PGPROT_BASE | _PAGE_SUPER | _PAGE_DIRTY | _PAGE_NOCACHE)
#define __PAGE_KERNEL_RO (__PGPROT_BASE | _PAGE_SUPER | _PAGE_DIRTY | _PAGE_WP)
#define MAKE_GLOBAL(x) __pgprot((x) & ~_PAGE_NOTGLOBAL)
#define PAGE_KERNEL MAKE_GLOBAL(__PAGE_KERNEL)
#define PAGE_KERNEL_RO MAKE_GLOBAL(__PAGE_KERNEL_RO)
#define PAGE_KERNEL_NOCACHE MAKE_GLOBAL(__PAGE_KERNEL_NOCACHE)
#define _PAGE_TABLE (_PAGE_PRESENT | xAMPRx_SS_16Kb)
#ifndef __ASSEMBLY__
/*
* The FR451 can do execute protection by virtue of having separate TLB miss handlers for
* instruction access and for data access. However, we don't have enough reserved bits to say
* "execute only", so we don't bother. If you can read it, you can execute it and vice versa.
*/
#define __P000 PAGE_NONE
#define __P001 PAGE_READONLY
#define __P010 PAGE_COPY
#define __P011 PAGE_COPY
#define __P100 PAGE_READONLY
#define __P101 PAGE_READONLY
#define __P110 PAGE_COPY
#define __P111 PAGE_COPY
#define __S000 PAGE_NONE
#define __S001 PAGE_READONLY
#define __S010 PAGE_SHARED
#define __S011 PAGE_SHARED
#define __S100 PAGE_READONLY
#define __S101 PAGE_READONLY
#define __S110 PAGE_SHARED
#define __S111 PAGE_SHARED
/*
* Define this to warn about kernel memory accesses that are
* done without a 'access_ok(VERIFY_WRITE,..)'
*/
#undef TEST_ACCESS_OK
#define pte_present(x) (pte_val(x) & _PAGE_PRESENT)
#define pte_clear(mm,addr,xp) do { set_pte_at(mm, addr, xp, __pte(0)); } while (0)
#define pmd_none(x) (!pmd_val(x))
#define pmd_present(x) (pmd_val(x) & _PAGE_PRESENT)
#define pmd_bad(x) (pmd_val(x) & xAMPRx_SS)
#define pmd_clear(xp) do { __set_pmd(xp, 0); } while(0)
#define pmd_page_vaddr(pmd) \
((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
#ifndef CONFIG_DISCONTIGMEM
#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT))
#endif
#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
/*
* The following only work if pte_present() is true.
* Undefined behaviour if not..
*/
static inline int pte_dirty(pte_t pte) { return (pte).pte & _PAGE_DIRTY; }
static inline int pte_young(pte_t pte) { return (pte).pte & _PAGE_ACCESSED; }
static inline int pte_write(pte_t pte) { return !((pte).pte & _PAGE_WP); }
static inline int pte_special(pte_t pte) { return 0; }
static inline pte_t pte_mkclean(pte_t pte) { (pte).pte &= ~_PAGE_DIRTY; return pte; }
static inline pte_t pte_mkold(pte_t pte) { (pte).pte &= ~_PAGE_ACCESSED; return pte; }
static inline pte_t pte_wrprotect(pte_t pte) { (pte).pte |= _PAGE_WP; return pte; }
static inline pte_t pte_mkdirty(pte_t pte) { (pte).pte |= _PAGE_DIRTY; return pte; }
static inline pte_t pte_mkyoung(pte_t pte) { (pte).pte |= _PAGE_ACCESSED; return pte; }
static inline pte_t pte_mkwrite(pte_t pte) { (pte).pte &= ~_PAGE_WP; return pte; }
static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep)
{
int i = test_and_clear_bit(_PAGE_BIT_ACCESSED, ptep);
asm volatile("dcf %M0" :: "U"(*ptep));
return i;
}
static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{
unsigned long x = xchg(&ptep->pte, 0);
asm volatile("dcf %M0" :: "U"(*ptep));
return __pte(x);
}
static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{
set_bit(_PAGE_BIT_WP, ptep);
asm volatile("dcf %M0" :: "U"(*ptep));
}
/*
* Macro to mark a page protection value as "uncacheable"
*/
#define pgprot_noncached(prot) (__pgprot(pgprot_val(prot) | _PAGE_NOCACHE))
/*
* Conversion functions: convert a page and protection to a page entry,
* and a page entry and page directory to the page they refer to.
*/
#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
#define mk_pte_huge(entry) ((entry).pte_low |= _PAGE_PRESENT | _PAGE_PSE)
/* This takes a physical page address that is used by the remapping functions */
#define mk_pte_phys(physpage, pgprot) pfn_pte((physpage) >> PAGE_SHIFT, pgprot)
static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
{
pte.pte &= _PAGE_CHG_MASK;
pte.pte |= pgprot_val(newprot);
return pte;
}
/* to find an entry in a page-table-directory. */
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
#define pgd_index_k(addr) pgd_index(addr)
/* Find an entry in the bottom-level page table.. */
#define __pte_index(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
/*
* the pte page can be thought of an array like this: pte_t[PTRS_PER_PTE]
*
* this macro returns the index of the entry in the pte page which would
* control the given virtual address
*/
#define pte_index(address) \
(((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset_kernel(dir, address) \
((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
#if defined(CONFIG_HIGHPTE)
#define pte_offset_map(dir, address) \
((pte_t *)kmap_atomic(pmd_page(*(dir))) + pte_index(address))
#define pte_unmap(pte) kunmap_atomic(pte)
#else
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
#define pte_unmap(pte) do { } while (0)
#endif
/*
* Handle swap and file entries
* - the PTE is encoded in the following format:
* bit 0: Must be 0 (!_PAGE_PRESENT)
* bits 1-6: Swap type
* bits 7-31: Swap offset
*/
#define __swp_type(x) (((x).val >> 1) & 0x1f)
#define __swp_offset(x) ((x).val >> 7)
#define __swp_entry(type, offset) ((swp_entry_t) { ((type) << 1) | ((offset) << 7) })
#define __pte_to_swp_entry(_pte) ((swp_entry_t) { (_pte).pte })
#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
/* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
#define PageSkip(page) (0)
#define kern_addr_valid(addr) (1)
#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
#define __HAVE_ARCH_PTEP_SET_WRPROTECT
#define __HAVE_ARCH_PTE_SAME
#include <asm-generic/pgtable.h>
/*
* preload information about a newly instantiated PTE into the SCR0/SCR1 PGE cache
*/
static inline void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep)
{
struct mm_struct *mm;
unsigned long ampr;
mm = current->mm;
if (mm) {
pgd_t *pge = pgd_offset(mm, address);
pud_t *pue = pud_offset(pge, address);
pmd_t *pme = pmd_offset(pue, address);
ampr = pme->ste[0] & 0xffffff00;
ampr |= xAMPRx_L | xAMPRx_SS_16Kb | xAMPRx_S | xAMPRx_C |
xAMPRx_V;
} else {
address = ULONG_MAX;
ampr = 0;
}
asm volatile("movgs %0,scr0\n"
"movgs %0,scr1\n"
"movgs %1,dampr4\n"
"movgs %1,dampr5\n"
:
: "r"(address), "r"(ampr)
);
}
#ifdef CONFIG_PROC_FS
extern char *proc_pid_status_frv_cxnr(struct mm_struct *mm, char *buffer);
#endif
extern void __init pgtable_cache_init(void);
#endif /* !__ASSEMBLY__ */
#endif /* !CONFIG_MMU */
#ifndef __ASSEMBLY__
extern void __init paging_init(void);
#endif /* !__ASSEMBLY__ */
#define HAVE_ARCH_UNMAPPED_AREA
#endif /* _ASM_PGTABLE_H */

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arch/frv/include/asm/processor.h
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@ -1,110 +0,0 @@
/* processor.h: FRV processor definitions
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_PROCESSOR_H
#define _ASM_PROCESSOR_H
#include <asm/mem-layout.h>
#ifndef __ASSEMBLY__
/*
* Default implementation of macro that returns current
* instruction pointer ("program counter").
*/
#define current_text_addr() ({ __label__ _l; _l: &&_l;})
#include <linux/compiler.h>
#include <linux/linkage.h>
#include <asm/sections.h>
#include <asm/segment.h>
#include <asm/fpu.h>
#include <asm/registers.h>
#include <asm/ptrace.h>
#include <asm/current.h>
#include <asm/cache.h>
/* Forward declaration, a strange C thing */
struct task_struct;
/*
* Bus types
*/
#define EISA_bus 0
struct thread_struct {
struct pt_regs *frame; /* [GR28] exception frame ptr for this thread */
struct task_struct *curr; /* [GR29] current pointer for this thread */
unsigned long sp; /* [GR1 ] kernel stack pointer */
unsigned long fp; /* [GR2 ] kernel frame pointer */
unsigned long lr; /* link register */
unsigned long pc; /* program counter */
unsigned long gr[12]; /* [GR16-GR27] */
unsigned long sched_lr; /* LR from schedule() */
union {
struct pt_regs *frame0; /* top (user) stack frame */
struct user_context *user; /* userspace context */
};
} __attribute__((aligned(8)));
extern struct pt_regs *__kernel_frame0_ptr;
extern struct task_struct *__kernel_current_task;
#endif
#ifndef __ASSEMBLY__
#define INIT_THREAD_FRAME0 \
((struct pt_regs *) \
(sizeof(init_stack) + (unsigned long) init_stack - sizeof(struct user_context)))
#define INIT_THREAD { \
NULL, \
(struct task_struct *) init_stack, \
0, 0, 0, 0, \
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, \
0, \
{ INIT_THREAD_FRAME0 }, \
}
/*
* do necessary setup to start up a newly executed thread.
*/
#define start_thread(_regs, _pc, _usp) \
do { \
_regs->pc = (_pc); \
_regs->psr &= ~PSR_S; \
_regs->sp = (_usp); \
} while(0)
/* Free all resources held by a thread. */
static inline void release_thread(struct task_struct *dead_task)
{
}
extern asmlinkage void save_user_regs(struct user_context *target);
extern asmlinkage void *restore_user_regs(const struct user_context *target, ...);
unsigned long get_wchan(struct task_struct *p);
#define KSTK_EIP(tsk) ((tsk)->thread.frame0->pc)
#define KSTK_ESP(tsk) ((tsk)->thread.frame0->sp)
#define cpu_relax() barrier()
/* data cache prefetch */
#define ARCH_HAS_PREFETCH
static inline void prefetch(const void *x)
{
asm volatile("dcpl %0,gr0,#0" : : "r"(x));
}
#endif /* __ASSEMBLY__ */
#endif /* _ASM_PROCESSOR_H */

41
arch/frv/include/asm/ptrace.h
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@ -1,41 +0,0 @@
/* ptrace.h: ptrace() relevant definitions
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_PTRACE_H
#define _ASM_PTRACE_H
#include <asm/irq_regs.h>
#include <uapi/asm/ptrace.h>
#define in_syscall(regs) (((regs)->tbr & TBR_TT) == TBR_TT_TRAP0)
#ifndef __ASSEMBLY__
struct task_struct;
/*
* we dedicate GR28 to keeping a pointer to the current exception frame
* - gr28 is destroyed on entry to the kernel from userspace
*/
register struct pt_regs *__frame asm("gr28");
#define user_mode(regs) (!((regs)->psr & PSR_S))
#define instruction_pointer(regs) ((regs)->pc)
#define user_stack_pointer(regs) ((regs)->sp)
#define current_pt_regs() (__frame)
extern unsigned long user_stack(const struct pt_regs *);
#define profile_pc(regs) ((regs)->pc)
#define task_pt_regs(task) ((task)->thread.frame0)
#define arch_has_single_step() (1)
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_PTRACE_H */

40
arch/frv/include/asm/sections.h
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@ -1,40 +0,0 @@
/* sections.h: linkage layout variables
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_SECTIONS_H
#define _ASM_SECTIONS_H
#ifndef __ASSEMBLY__
#include <linux/types.h>
#include <asm-generic/sections.h>
#ifdef __KERNEL__
/*
* we don't want to put variables in the GP-REL section if they're not used very much - that would
* be waste since GP-REL addressing is limited to GP16+/-2048
*/
#define __nongpreldata __attribute__((section(".data")))
#define __nongprelbss __attribute__((section(".bss")))
/*
* linker symbols
*/
extern const void __kernel_image_start, __kernel_image_end, __page_offset;
extern unsigned long __nongprelbss memory_start;
extern unsigned long __nongprelbss memory_end;
extern unsigned long __nongprelbss rom_length;
#endif
#endif
#endif /* _ASM_SECTIONS_H */

44
arch/frv/include/asm/segment.h
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@ -1,44 +0,0 @@
/* segment.h: MMU segment settings
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_SEGMENT_H
#define _ASM_SEGMENT_H
#ifndef __ASSEMBLY__
typedef struct {
unsigned long seg;
} mm_segment_t;
#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
#ifdef CONFIG_MMU
#define USER_DS MAKE_MM_SEG(TASK_SIZE - 1)
#define KERNEL_DS MAKE_MM_SEG(0xdfffffffUL)
#else
#define USER_DS MAKE_MM_SEG(memory_end)
#define KERNEL_DS MAKE_MM_SEG(0xe0000000UL)
#endif
#define get_ds() (KERNEL_DS)
#define get_fs() (__current_thread_info->addr_limit)
#define segment_eq(a, b) ((a).seg == (b).seg)
#define get_addr_limit() (get_fs().seg)
#define set_fs(_x) \
do { \
__current_thread_info->addr_limit = (_x); \
} while(0)
#endif /* __ASSEMBLY__ */
#endif /* _ASM_SEGMENT_H */

44
arch/frv/include/asm/serial-regs.h
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@ -1,44 +0,0 @@
/* serial-regs.h: serial port registers
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_SERIAL_REGS_H
#define _ASM_SERIAL_REGS_H
#include <linux/serial_reg.h>
#include <asm/irc-regs.h>
#define SERIAL_ICLK 33333333 /* the target serial input clock */
#define UART0_BASE 0xfeff9c00
#define UART1_BASE 0xfeff9c40
#define __get_UART0(R) ({ __reg(UART0_BASE + (R) * 8) >> 24; })
#define __get_UART1(R) ({ __reg(UART1_BASE + (R) * 8) >> 24; })
#define __set_UART0(R,V) do { __reg(UART0_BASE + (R) * 8) = (V) << 24; } while(0)
#define __set_UART1(R,V) do { __reg(UART1_BASE + (R) * 8) = (V) << 24; } while(0)
#define __get_UART0_LSR() ({ __get_UART0(UART_LSR); })
#define __get_UART1_LSR() ({ __get_UART1(UART_LSR); })
#define __set_UART0_IER(V) __set_UART0(UART_IER,(V))
#define __set_UART1_IER(V) __set_UART1(UART_IER,(V))
/* serial prescaler select register */
#define __get_UCPSR() ({ *(volatile unsigned long *)(0xfeff9c90); })
#define __set_UCPSR(V) do { *(volatile unsigned long *)(0xfeff9c90) = (V); } while(0)
#define UCPSR_SELECT0 0x07000000
#define UCPSR_SELECT1 0x38000000
/* serial prescaler base value register */
#define __get_UCPVR() ({ *(volatile unsigned long *)(0xfeff9c98); mb(); })
#define __set_UCPVR(V) do { *(volatile unsigned long *)(0xfeff9c98) = (V) << 24; mb(); } while(0)
#endif /* _ASM_SERIAL_REGS_H */

14
arch/frv/include/asm/serial.h
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@ -1,14 +0,0 @@
/*
* serial.h
*
* Copyright (C) 2003 Develer S.r.l. (http://www.develer.com/)
* Author: Bernardo Innocenti <bernie@codewiz.org>
*
* Based on linux/include/asm-i386/serial.h
*/
#include <asm/serial-regs.h>
/*
* the base baud is derived from the clock speed and so is variable
*/
#define BASE_BAUD 0

26
arch/frv/include/asm/setup.h
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/* setup.h: setup stuff
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_SETUP_H
#define _ASM_SETUP_H
#include <linux/init.h>
#include <uapi/asm/setup.h>
#ifndef __ASSEMBLY__
#ifdef CONFIG_MMU
extern unsigned long __initdata num_mappedpages;
#endif
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_SETUP_H */

8
arch/frv/include/asm/shmparam.h
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_SHMPARAM_H
#define _ASM_SHMPARAM_H
#define SHMLBA PAGE_SIZE /* attach addr a multiple of this */
#endif /* _ASM_SHMPARAM_H */

7
arch/frv/include/asm/signal.h
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_SIGNAL_H
#define _ASM_SIGNAL_H
#include <uapi/asm/signal.h>
#endif /* _ASM_SIGNAL_H */

10
arch/frv/include/asm/smp.h
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SMP_H
#define __ASM_SMP_H
#ifdef CONFIG_SMP
#error SMP not supported
#endif
#endif

17
arch/frv/include/asm/spinlock.h
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@ -1,17 +0,0 @@
/* spinlock.h: spinlocks for FR-V
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_SPINLOCK_H
#define _ASM_SPINLOCK_H
#error no spinlocks for FR-V yet
#endif /* _ASM_SPINLOCK_H */

416
arch/frv/include/asm/spr-regs.h
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/* spr-regs.h: special-purpose registers on the FRV
*
* Copyright (C) 2003, 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_SPR_REGS_H
#define _ASM_SPR_REGS_H
/*
* PSR - Processor Status Register
*/
#define PSR_ET 0x00000001 /* enable interrupts/exceptions flag */
#define PSR_PS 0x00000002 /* previous supervisor mode flag */
#define PSR_S 0x00000004 /* supervisor mode flag */
#define PSR_PIL 0x00000078 /* processor external interrupt level */
#define PSR_PIL_0 0x00000000 /* - no interrupt in progress */
#define PSR_PIL_13 0x00000068 /* - debugging only */
#define PSR_PIL_14 0x00000070 /* - debugging in progress */
#define PSR_PIL_15 0x00000078 /* - NMI in progress */
#define PSR_EM 0x00000080 /* enable media operation */
#define PSR_EF 0x00000100 /* enable FPU operation */
#define PSR_BE 0x00001000 /* endianness mode */
#define PSR_BE_LE 0x00000000 /* - little endian mode */
#define PSR_BE_BE 0x00001000 /* - big endian mode */
#define PSR_CM 0x00002000 /* conditional mode */
#define PSR_NEM 0x00004000 /* non-excepting mode */
#define PSR_ICE 0x00010000 /* in-circuit emulation mode */
#define PSR_VERSION_SHIFT 24 /* CPU silicon ID */
#define PSR_IMPLE_SHIFT 28 /* CPU core ID */
#define PSR_VERSION(psr) (((psr) >> PSR_VERSION_SHIFT) & 0xf)
#define PSR_IMPLE(psr) (((psr) >> PSR_IMPLE_SHIFT) & 0xf)
#define PSR_IMPLE_FR401 0x2
#define PSR_VERSION_FR401_MB93401 0x0
#define PSR_VERSION_FR401_MB93401A 0x1
#define PSR_VERSION_FR401_MB93403 0x2
#define PSR_IMPLE_FR405 0x4
#define PSR_VERSION_FR405_MB93405 0x0
#define PSR_IMPLE_FR451 0x5
#define PSR_VERSION_FR451_MB93451 0x0
#define PSR_IMPLE_FR501 0x1
#define PSR_VERSION_FR501_MB93501 0x1
#define PSR_VERSION_FR501_MB93501A 0x2
#define PSR_IMPLE_FR551 0x3
#define PSR_VERSION_FR551_MB93555 0x1
#define __get_PSR() ({ unsigned long x; asm volatile("movsg psr,%0" : "=r"(x)); x; })
#define __set_PSR(V) do { asm volatile("movgs %0,psr" : : "r"(V)); } while(0)
/*
* TBR - Trap Base Register
*/
#define TBR_TT 0x00000ff0
#define TBR_TT_INSTR_MMU_MISS (0x01 << 4)
#define TBR_TT_INSTR_ACC_ERROR (0x02 << 4)
#define TBR_TT_INSTR_ACC_EXCEP (0x03 << 4)
#define TBR_TT_PRIV_INSTR (0x06 << 4)
#define TBR_TT_ILLEGAL_INSTR (0x07 << 4)
#define TBR_TT_FP_EXCEPTION (0x0d << 4)
#define TBR_TT_MP_EXCEPTION (0x0e << 4)
#define TBR_TT_DATA_ACC_ERROR (0x11 << 4)
#define TBR_TT_DATA_MMU_MISS (0x12 << 4)
#define TBR_TT_DATA_ACC_EXCEP (0x13 << 4)
#define TBR_TT_DATA_STR_ERROR (0x14 << 4)
#define TBR_TT_DIVISION_EXCEP (0x17 << 4)
#define TBR_TT_COMMIT_EXCEP (0x19 << 4)
#define TBR_TT_INSTR_TLB_MISS (0x1a << 4)
#define TBR_TT_DATA_TLB_MISS (0x1b << 4)
#define TBR_TT_DATA_DAT_EXCEP (0x1d << 4)
#define TBR_TT_DECREMENT_TIMER (0x1f << 4)
#define TBR_TT_COMPOUND_EXCEP (0x20 << 4)
#define TBR_TT_INTERRUPT_1 (0x21 << 4)
#define TBR_TT_INTERRUPT_2 (0x22 << 4)
#define TBR_TT_INTERRUPT_3 (0x23 << 4)
#define TBR_TT_INTERRUPT_4 (0x24 << 4)
#define TBR_TT_INTERRUPT_5 (0x25 << 4)
#define TBR_TT_INTERRUPT_6 (0x26 << 4)
#define TBR_TT_INTERRUPT_7 (0x27 << 4)
#define TBR_TT_INTERRUPT_8 (0x28 << 4)
#define TBR_TT_INTERRUPT_9 (0x29 << 4)
#define TBR_TT_INTERRUPT_10 (0x2a << 4)
#define TBR_TT_INTERRUPT_11 (0x2b << 4)
#define TBR_TT_INTERRUPT_12 (0x2c << 4)
#define TBR_TT_INTERRUPT_13 (0x2d << 4)
#define TBR_TT_INTERRUPT_14 (0x2e << 4)
#define TBR_TT_INTERRUPT_15 (0x2f << 4)
#define TBR_TT_TRAP0 (0x80 << 4)
#define TBR_TT_TRAP1 (0x81 << 4)
#define TBR_TT_TRAP2 (0x82 << 4)
#define TBR_TT_TRAP3 (0x83 << 4)
#define TBR_TT_TRAP120 (0xf8 << 4)
#define TBR_TT_TRAP121 (0xf9 << 4)
#define TBR_TT_TRAP122 (0xfa << 4)
#define TBR_TT_TRAP123 (0xfb << 4)
#define TBR_TT_TRAP124 (0xfc << 4)
#define TBR_TT_TRAP125 (0xfd << 4)
#define TBR_TT_TRAP126 (0xfe << 4)
#define TBR_TT_BREAK (0xff << 4)
#define TBR_TT_ATOMIC_CMPXCHG32 TBR_TT_TRAP120
#define TBR_TT_ATOMIC_XCHG32 TBR_TT_TRAP121
#define TBR_TT_ATOMIC_XOR TBR_TT_TRAP122
#define TBR_TT_ATOMIC_OR TBR_TT_TRAP123
#define TBR_TT_ATOMIC_AND TBR_TT_TRAP124
#define TBR_TT_ATOMIC_SUB TBR_TT_TRAP125
#define TBR_TT_ATOMIC_ADD TBR_TT_TRAP126
#define __get_TBR() ({ unsigned long x; asm volatile("movsg tbr,%0" : "=r"(x)); x; })
/*
* HSR0 - Hardware Status Register 0
*/
#define HSR0_PDM 0x00000007 /* power down mode */
#define HSR0_PDM_NORMAL 0x00000000 /* - normal mode */
#define HSR0_PDM_CORE_SLEEP 0x00000001 /* - CPU core sleep mode */
#define HSR0_PDM_BUS_SLEEP 0x00000003 /* - bus sleep mode */
#define HSR0_PDM_PLL_RUN 0x00000005 /* - PLL run */
#define HSR0_PDM_PLL_STOP 0x00000007 /* - PLL stop */
#define HSR0_GRLE 0x00000040 /* GR lower register set enable */
#define HSR0_GRHE 0x00000080 /* GR higher register set enable */
#define HSR0_FRLE 0x00000100 /* FR lower register set enable */
#define HSR0_FRHE 0x00000200 /* FR higher register set enable */
#define HSR0_GRN 0x00000400 /* GR quantity */
#define HSR0_GRN_64 0x00000000 /* - 64 GR registers */
#define HSR0_GRN_32 0x00000400 /* - 32 GR registers */
#define HSR0_FRN 0x00000800 /* FR quantity */
#define HSR0_FRN_64 0x00000000 /* - 64 FR registers */
#define HSR0_FRN_32 0x00000800 /* - 32 FR registers */
#define HSR0_SA 0x00001000 /* start address (RAMBOOT#) */
#define HSR0_ETMI 0x00008000 /* enable TIMERI (64-bit up timer) */
#define HSR0_ETMD 0x00004000 /* enable TIMERD (32-bit down timer) */
#define HSR0_PEDAT 0x00010000 /* previous DAT mode */
#define HSR0_XEDAT 0x00020000 /* exception DAT mode */
#define HSR0_EDAT 0x00080000 /* enable DAT mode */
#define HSR0_RME 0x00400000 /* enable RAM mode */
#define HSR0_EMEM 0x00800000 /* enable MMU_Miss mask */
#define HSR0_EXMMU 0x01000000 /* enable extended MMU mode */
#define HSR0_EDMMU 0x02000000 /* enable data MMU */
#define HSR0_EIMMU 0x04000000 /* enable instruction MMU */
#define HSR0_CBM 0x08000000 /* copy back mode */
#define HSR0_CBM_WRITE_THRU 0x00000000 /* - write through */
#define HSR0_CBM_COPY_BACK 0x08000000 /* - copy back */
#define HSR0_NWA 0x10000000 /* no write allocate */
#define HSR0_DCE 0x40000000 /* data cache enable */
#define HSR0_ICE 0x80000000 /* instruction cache enable */
#define __get_HSR(R) ({ unsigned long x; asm volatile("movsg hsr"#R",%0" : "=r"(x)); x; })
#define __set_HSR(R,V) do { asm volatile("movgs %0,hsr"#R : : "r"(V)); } while(0)
/*
* CCR - Condition Codes Register
*/
#define CCR_FCC0 0x0000000f /* FP/Media condition 0 (fcc0 reg) */
#define CCR_FCC1 0x000000f0 /* FP/Media condition 1 (fcc1 reg) */
#define CCR_FCC2 0x00000f00 /* FP/Media condition 2 (fcc2 reg) */
#define CCR_FCC3 0x0000f000 /* FP/Media condition 3 (fcc3 reg) */
#define CCR_ICC0 0x000f0000 /* Integer condition 0 (icc0 reg) */
#define CCR_ICC0_C 0x00010000 /* - Carry flag */
#define CCR_ICC0_V 0x00020000 /* - Overflow flag */
#define CCR_ICC0_Z 0x00040000 /* - Zero flag */
#define CCR_ICC0_N 0x00080000 /* - Negative flag */
#define CCR_ICC1 0x00f00000 /* Integer condition 1 (icc1 reg) */
#define CCR_ICC2 0x0f000000 /* Integer condition 2 (icc2 reg) */
#define CCR_ICC3 0xf0000000 /* Integer condition 3 (icc3 reg) */
/*
* CCCR - Condition Codes for Conditional Instructions Register
*/
#define CCCR_CC0 0x00000003 /* condition 0 (cc0 reg) */
#define CCCR_CC0_FALSE 0x00000002 /* - condition is false */
#define CCCR_CC0_TRUE 0x00000003 /* - condition is true */
#define CCCR_CC1 0x0000000c /* condition 1 (cc1 reg) */
#define CCCR_CC2 0x00000030 /* condition 2 (cc2 reg) */
#define CCCR_CC3 0x000000c0 /* condition 3 (cc3 reg) */
#define CCCR_CC4 0x00000300 /* condition 4 (cc4 reg) */
#define CCCR_CC5 0x00000c00 /* condition 5 (cc5 reg) */
#define CCCR_CC6 0x00003000 /* condition 6 (cc6 reg) */
#define CCCR_CC7 0x0000c000 /* condition 7 (cc7 reg) */
/*
* ISR - Integer Status Register
*/
#define ISR_EMAM 0x00000001 /* memory misaligned access handling */
#define ISR_EMAM_EXCEPTION 0x00000000 /* - generate exception */
#define ISR_EMAM_FUDGE 0x00000001 /* - mask out invalid address bits */
#define ISR_AEXC 0x00000004 /* accrued [overflow] exception */
#define ISR_DTT 0x00000018 /* division type trap */
#define ISR_DTT_IGNORE 0x00000000 /* - ignore division error */
#define ISR_DTT_DIVBYZERO 0x00000008 /* - generate exception */
#define ISR_DTT_OVERFLOW 0x00000010 /* - record overflow */
#define ISR_EDE 0x00000020 /* enable division exception */
#define ISR_PLI 0x20000000 /* pre-load instruction information */
#define ISR_QI 0x80000000 /* quad data implementation information */
/*
* EPCR0 - Exception PC Register
*/
#define EPCR0_V 0x00000001 /* register content validity indicator */
#define EPCR0_PC 0xfffffffc /* faulting instruction address */
/*
* ESR0/14/15 - Exception Status Register
*/
#define ESRx_VALID 0x00000001 /* register content validity indicator */
#define ESRx_EC 0x0000003e /* exception type */
#define ESRx_EC_DATA_STORE 0x00000000 /* - data_store_error */
#define ESRx_EC_INSN_ACCESS 0x00000006 /* - instruction_access_error */
#define ESRx_EC_PRIV_INSN 0x00000008 /* - privileged_instruction */
#define ESRx_EC_ILL_INSN 0x0000000a /* - illegal_instruction */
#define ESRx_EC_MP_EXCEP 0x0000001c /* - mp_exception */
#define ESRx_EC_DATA_ACCESS 0x00000020 /* - data_access_error */
#define ESRx_EC_DIVISION 0x00000026 /* - division_exception */
#define ESRx_EC_ITLB_MISS 0x00000034 /* - instruction_access_TLB_miss */
#define ESRx_EC_DTLB_MISS 0x00000036 /* - data_access_TLB_miss */
#define ESRx_EC_DATA_ACCESS_DAT 0x0000003a /* - data_access_DAT_exception */
#define ESR0_IAEC 0x00000100 /* info for instruction-access-exception */
#define ESR0_IAEC_RESV 0x00000000 /* - reserved */
#define ESR0_IAEC_PROT_VIOL 0x00000100 /* - protection violation */
#define ESR0_ATXC 0x00f00000 /* address translation exception code */
#define ESR0_ATXC_MMU_MISS 0x00000000 /* - MMU miss exception and more (?) */
#define ESR0_ATXC_MULTI_DAT 0x00800000 /* - multiple DAT entry hit */
#define ESR0_ATXC_MULTI_SAT 0x00900000 /* - multiple SAT entry hit */
#define ESR0_ATXC_AMRTLB_MISS 0x00a00000 /* - MMU/TLB miss exception */
#define ESR0_ATXC_PRIV_EXCEP 0x00c00000 /* - privilege protection fault */
#define ESR0_ATXC_WP_EXCEP 0x00d00000 /* - write protection fault */
#define ESR0_EAV 0x00000800 /* true if EAR0 register valid */
#define ESR15_EAV 0x00000800 /* true if EAR15 register valid */
/*
* ESFR1 - Exception Status Valid Flag Register
*/
#define ESFR1_ESR0 0x00000001 /* true if ESR0 is valid */
#define ESFR1_ESR14 0x00004000 /* true if ESR14 is valid */
#define ESFR1_ESR15 0x00008000 /* true if ESR15 is valid */
/*
* MSR - Media Status Register
*/
#define MSR0_AOVF 0x00000001 /* overflow exception accrued */
#define MSRx_OVF 0x00000002 /* overflow exception detected */
#define MSRx_SIE 0x0000003c /* last SIMD instruction exception detected */
#define MSRx_SIE_NONE 0x00000000 /* - none detected */
#define MSRx_SIE_FRkHI_ACCk 0x00000020 /* - exception at FRkHI or ACCk */
#define MSRx_SIE_FRkLO_ACCk1 0x00000010 /* - exception at FRkLO or ACCk+1 */
#define MSRx_SIE_FRk1HI_ACCk2 0x00000008 /* - exception at FRk+1HI or ACCk+2 */
#define MSRx_SIE_FRk1LO_ACCk3 0x00000004 /* - exception at FRk+1LO or ACCk+3 */
#define MSR0_MTT 0x00007000 /* type of last media trap detected */
#define MSR0_MTT_NONE 0x00000000 /* - none detected */
#define MSR0_MTT_OVERFLOW 0x00001000 /* - overflow detected */
#define MSR0_HI 0x00c00000 /* hardware implementation */
#define MSR0_HI_ROUNDING 0x00000000 /* - rounding mode */
#define MSR0_HI_NONROUNDING 0x00c00000 /* - non-rounding mode */
#define MSR0_EMCI 0x01000000 /* enable media custom instructions */
#define MSR0_SRDAV 0x10000000 /* select rounding mode of MAVEH */
#define MSR0_SRDAV_RDAV 0x00000000 /* - controlled by MSR.RDAV */
#define MSR0_SRDAV_RD 0x10000000 /* - controlled by MSR.RD */
#define MSR0_RDAV 0x20000000 /* rounding mode of MAVEH */
#define MSR0_RDAV_NEAREST_MI 0x00000000 /* - round to nearest minus */
#define MSR0_RDAV_NEAREST_PL 0x20000000 /* - round to nearest plus */
#define MSR0_RD 0xc0000000 /* rounding mode */
#define MSR0_RD_NEAREST 0x00000000 /* - nearest */
#define MSR0_RD_ZERO 0x40000000 /* - zero */
#define MSR0_RD_POS_INF 0x80000000 /* - positive infinity */
#define MSR0_RD_NEG_INF 0xc0000000 /* - negative infinity */
/*
* IAMPR0-7 - Instruction Address Mapping Register
* DAMPR0-7 - Data Address Mapping Register
*/
#define xAMPRx_V 0x00000001 /* register content validity indicator */
#define DAMPRx_WP 0x00000002 /* write protect */
#define DAMPRx_WP_RW 0x00000000 /* - read/write */
#define DAMPRx_WP_RO 0x00000002 /* - read-only */
#define xAMPRx_C 0x00000004 /* cached/uncached */
#define xAMPRx_C_CACHED 0x00000000 /* - cached */
#define xAMPRx_C_UNCACHED 0x00000004 /* - uncached */
#define xAMPRx_S 0x00000008 /* supervisor only */
#define xAMPRx_S_USER 0x00000000 /* - userspace can access */
#define xAMPRx_S_KERNEL 0x00000008 /* - kernel only */
#define xAMPRx_SS 0x000000f0 /* segment size */
#define xAMPRx_SS_16Kb 0x00000000 /* - 16 kilobytes */
#define xAMPRx_SS_64Kb 0x00000010 /* - 64 kilobytes */
#define xAMPRx_SS_256Kb 0x00000020 /* - 256 kilobytes */
#define xAMPRx_SS_1Mb 0x00000030 /* - 1 megabyte */
#define xAMPRx_SS_2Mb 0x00000040 /* - 2 megabytes */
#define xAMPRx_SS_4Mb 0x00000050 /* - 4 megabytes */
#define xAMPRx_SS_8Mb 0x00000060 /* - 8 megabytes */
#define xAMPRx_SS_16Mb 0x00000070 /* - 16 megabytes */
#define xAMPRx_SS_32Mb 0x00000080 /* - 32 megabytes */
#define xAMPRx_SS_64Mb 0x00000090 /* - 64 megabytes */
#define xAMPRx_SS_128Mb 0x000000a0 /* - 128 megabytes */
#define xAMPRx_SS_256Mb 0x000000b0 /* - 256 megabytes */
#define xAMPRx_SS_512Mb 0x000000c0 /* - 512 megabytes */
#define xAMPRx_RESERVED8 0x00000100 /* reserved bit */
#define xAMPRx_NG 0x00000200 /* non-global */
#define xAMPRx_L 0x00000400 /* locked */
#define xAMPRx_M 0x00000800 /* modified */
#define xAMPRx_D 0x00001000 /* DAT entry */
#define xAMPRx_RESERVED13 0x00002000 /* reserved bit */
#define xAMPRx_PPFN 0xfff00000 /* physical page frame number */
#define xAMPRx_V_BIT 0
#define DAMPRx_WP_BIT 1
#define xAMPRx_C_BIT 2
#define xAMPRx_S_BIT 3
#define xAMPRx_RESERVED8_BIT 8
#define xAMPRx_NG_BIT 9
#define xAMPRx_L_BIT 10
#define xAMPRx_M_BIT 11
#define xAMPRx_D_BIT 12
#define xAMPRx_RESERVED13_BIT 13
#define __get_IAMPR(R) ({ unsigned long x; asm volatile("movsg iampr"#R",%0" : "=r"(x)); x; })
#define __get_DAMPR(R) ({ unsigned long x; asm volatile("movsg dampr"#R",%0" : "=r"(x)); x; })
#define __get_IAMLR(R) ({ unsigned long x; asm volatile("movsg iamlr"#R",%0" : "=r"(x)); x; })
#define __get_DAMLR(R) ({ unsigned long x; asm volatile("movsg damlr"#R",%0" : "=r"(x)); x; })
#define __set_IAMPR(R,V) do { asm volatile("movgs %0,iampr"#R : : "r"(V)); } while(0)
#define __set_DAMPR(R,V) do { asm volatile("movgs %0,dampr"#R : : "r"(V)); } while(0)
#define __set_IAMLR(R,V) do { asm volatile("movgs %0,iamlr"#R : : "r"(V)); } while(0)
#define __set_DAMLR(R,V) do { asm volatile("movgs %0,damlr"#R : : "r"(V)); } while(0)
#define save_dampr(R, _dampr) \
do { \
asm volatile("movsg dampr"R",%0" : "=r"(_dampr)); \
} while(0)
#define restore_dampr(R, _dampr) \
do { \
asm volatile("movgs %0,dampr"R :: "r"(_dampr)); \
} while(0)
/*
* AMCR - Address Mapping Control Register
*/
#define AMCR_IAMRN 0x000000ff /* quantity of IAMPR registers */
#define AMCR_DAMRN 0x0000ff00 /* quantity of DAMPR registers */
/*
* TTBR - Address Translation Table Base Register
*/
#define __get_TTBR() ({ unsigned long x; asm volatile("movsg ttbr,%0" : "=r"(x)); x; })
/*
* TPXR - TLB Probe Extend Register
*/
#define TPXR_E 0x00000001
#define TPXR_LMAX_SHIFT 20
#define TPXR_LMAX_SMASK 0xf
#define TPXR_WMAX_SHIFT 24
#define TPXR_WMAX_SMASK 0xf
#define TPXR_WAY_SHIFT 28
#define TPXR_WAY_SMASK 0xf
/*
* DCR - Debug Control Register
*/
#define DCR_IBCE3 0x00000001 /* break on conditional insn pointed to by IBAR3 */
#define DCR_IBE3 0x00000002 /* break on insn pointed to by IBAR3 */
#define DCR_IBCE1 0x00000004 /* break on conditional insn pointed to by IBAR2 */
#define DCR_IBE1 0x00000008 /* break on insn pointed to by IBAR2 */
#define DCR_IBCE2 0x00000010 /* break on conditional insn pointed to by IBAR1 */
#define DCR_IBE2 0x00000020 /* break on insn pointed to by IBAR1 */
#define DCR_IBCE0 0x00000040 /* break on conditional insn pointed to by IBAR0 */
#define DCR_IBE0 0x00000080 /* break on insn pointed to by IBAR0 */
#define DCR_DDBE1 0x00004000 /* use DBDR1x when checking DBAR1 */
#define DCR_DWBE1 0x00008000 /* break on store to address in DBAR1/DBMR1x */
#define DCR_DRBE1 0x00010000 /* break on load from address in DBAR1/DBMR1x */
#define DCR_DDBE0 0x00020000 /* use DBDR0x when checking DBAR0 */
#define DCR_DWBE0 0x00040000 /* break on store to address in DBAR0/DBMR0x */
#define DCR_DRBE0 0x00080000 /* break on load from address in DBAR0/DBMR0x */
#define DCR_EIM 0x0c000000 /* external interrupt disable */
#define DCR_IBM 0x10000000 /* instruction break disable */
#define DCR_SE 0x20000000 /* single step enable */
#define DCR_EBE 0x40000000 /* exception break enable */
/*
* BRR - Break Interrupt Request Register
*/
#define BRR_ST 0x00000001 /* single-step detected */
#define BRR_SB 0x00000002 /* break instruction detected */
#define BRR_BB 0x00000004 /* branch with hint detected */
#define BRR_CBB 0x00000008 /* branch to LR detected */
#define BRR_IBx 0x000000f0 /* hardware breakpoint detected */
#define BRR_DBx 0x00000f00 /* hardware watchpoint detected */
#define BRR_DBNEx 0x0000f000 /* ? */
#define BRR_EBTT 0x00ff0000 /* trap type of exception break */
#define BRR_TB 0x10000000 /* external break request detected */
#define BRR_CB 0x20000000 /* ICE break command detected */
#define BRR_EB 0x40000000 /* exception break detected */
/*
* BPSR - Break PSR Save Register
*/
#define BPSR_BET 0x00000001 /* former PSR.ET */
#define BPSR_BS 0x00001000 /* former PSR.S */
#endif /* _ASM_SPR_REGS_H */

50
arch/frv/include/asm/string.h
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/* string.h: FRV string handling
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_STRING_H_
#define _ASM_STRING_H_
#ifdef __KERNEL__ /* only set these up for kernel code */
#define __HAVE_ARCH_MEMSET 1
#define __HAVE_ARCH_MEMCPY 1
extern void *memset(void *, int, __kernel_size_t);
extern void *memcpy(void *, const void *, __kernel_size_t);
#else /* KERNEL */
/*
* let user libraries deal with these,
* IMHO the kernel has no place defining these functions for user apps
*/
#define __HAVE_ARCH_STRCPY 1
#define __HAVE_ARCH_STRNCPY 1
#define __HAVE_ARCH_STRCAT 1
#define __HAVE_ARCH_STRNCAT 1
#define __HAVE_ARCH_STRCMP 1
#define __HAVE_ARCH_STRNCMP 1
#define __HAVE_ARCH_STRCHR 1
#define __HAVE_ARCH_STRRCHR 1
#define __HAVE_ARCH_STRSTR 1
#define __HAVE_ARCH_STRLEN 1
#define __HAVE_ARCH_STRNLEN 1
#define __HAVE_ARCH_MEMSET 1
#define __HAVE_ARCH_MEMCPY 1
#define __HAVE_ARCH_MEMMOVE 1
#define __HAVE_ARCH_MEMSCAN 1
#define __HAVE_ARCH_MEMCMP 1
#define __HAVE_ARCH_MEMCHR 1
#define __HAVE_ARCH_STRTOK 1
#endif /* KERNEL */
#endif /* _ASM_STRING_H_ */

35
arch/frv/include/asm/switch_to.h
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/* FR-V CPU basic task switching
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_SWITCH_TO_H
#define _ASM_SWITCH_TO_H
#include <linux/thread_info.h>
/*
* switch_to(prev, next) should switch from task `prev' to `next'
* `prev' will never be the same as `next'.
* The `mb' is to tell GCC not to cache `current' across this call.
*/
extern asmlinkage
struct task_struct *__switch_to(struct thread_struct *prev_thread,
struct thread_struct *next_thread,
struct task_struct *prev);
#define switch_to(prev, next, last) \
do { \
(prev)->thread.sched_lr = \
(unsigned long) __builtin_return_address(0); \
(last) = __switch_to(&(prev)->thread, &(next)->thread, (prev)); \
mb(); \
} while(0)
#endif /* _ASM_SWITCH_TO_H */

123
arch/frv/include/asm/syscall.h
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/* syscall parameter access functions
*
* Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef _ASM_SYSCALL_H
#define _ASM_SYSCALL_H
#include <linux/err.h>
#include <asm/ptrace.h>
/*
* Get the system call number or -1
*/
static inline long syscall_get_nr(struct task_struct *task,
struct pt_regs *regs)
{
return regs->syscallno;
}
/*
* Restore the clobbered GR8 register
* (1st syscall arg was overwritten with syscall return or error)
*/
static inline void syscall_rollback(struct task_struct *task,
struct pt_regs *regs)
{
regs->gr8 = regs->orig_gr8;
}
/*
* See if the syscall return value is an error, returning it if it is and 0 if
* not
*/
static inline long syscall_get_error(struct task_struct *task,
struct pt_regs *regs)
{
return IS_ERR_VALUE(regs->gr8) ? regs->gr8 : 0;
}
/*
* Get the syscall return value
*/
static inline long syscall_get_return_value(struct task_struct *task,
struct pt_regs *regs)
{
return regs->gr8;
}
/*
* Set the syscall return value
*/
static inline void syscall_set_return_value(struct task_struct *task,
struct pt_regs *regs,
int error, long val)
{
if (error)
regs->gr8 = -error;
else
regs->gr8 = val;
}
/*
* Retrieve the system call arguments
*/
static inline void syscall_get_arguments(struct task_struct *task,
struct pt_regs *regs,
unsigned int i, unsigned int n,
unsigned long *args)
{
/*
* Do this simply for now. If we need to start supporting
* fetching arguments from arbitrary indices, this will need some
* extra logic. Presently there are no in-tree users that depend
* on this behaviour.
*/
BUG_ON(i);
/* Argument pattern is: GR8, GR9, GR10, GR11, GR12, GR13 */
switch (n) {
case 6: args[5] = regs->gr13;
case 5: args[4] = regs->gr12;
case 4: args[3] = regs->gr11;
case 3: args[2] = regs->gr10;
case 2: args[1] = regs->gr9;
case 1: args[0] = regs->gr8;
break;
default:
BUG();
}
}
/*
* Alter the system call arguments
*/
static inline void syscall_set_arguments(struct task_struct *task,
struct pt_regs *regs,
unsigned int i, unsigned int n,
const unsigned long *args)
{
/* Same note as above applies */
BUG_ON(i);
switch (n) {
case 6: regs->gr13 = args[5];
case 5: regs->gr12 = args[4];
case 4: regs->gr11 = args[3];
case 3: regs->gr10 = args[2];
case 2: regs->gr9 = args[1];
case 1: regs->gr8 = args[0];
break;
default:
BUG();
}
}
#endif /* _ASM_SYSCALL_H */

15
arch/frv/include/asm/termios.h
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_TERMIOS_H
#define _ASM_TERMIOS_H
#include <uapi/asm/termios.h>
/* intr=^C quit=^| erase=del kill=^U
eof=^D vtime=\0 vmin=\1 sxtc=\0
start=^Q stop=^S susp=^Z eol=\0
reprint=^R discard=^U werase=^W lnext=^V
eol2=\0
*/
#define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0"
#include <asm-generic/termios-base.h>
#endif /* _ASM_TERMIOS_H */

116
arch/frv/include/asm/thread_info.h
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/* thread_info.h: description
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
* Derived from include/asm-i386/thread_info.h
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_THREAD_INFO_H
#define _ASM_THREAD_INFO_H
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
#include <asm/processor.h>
#endif
#define THREAD_SIZE 8192
/*
* low level task data that entry.S needs immediate access to
* - this struct should fit entirely inside of one cache line
* - this struct shares the supervisor stack pages
* - if the contents of this structure are changed, the assembly constants must also be changed
*/
#ifndef __ASSEMBLY__
struct thread_info {
struct task_struct *task; /* main task structure */
unsigned long flags; /* low level flags */
unsigned long status; /* thread-synchronous flags */
__u32 cpu; /* current CPU */
int preempt_count; /* 0 => preemptable, <0 => BUG */
mm_segment_t addr_limit; /* thread address space:
* 0-0xBFFFFFFF for user-thead
* 0-0xFFFFFFFF for kernel-thread
*/
__u8 supervisor_stack[0];
};
#else /* !__ASSEMBLY__ */
#include <asm/asm-offsets.h>
#endif
/*
* macros/functions for gaining access to the thread information structure
*/
#ifndef __ASSEMBLY__
#define INIT_THREAD_INFO(tsk) \
{ \
.task = &tsk, \
.flags = 0, \
.cpu = 0, \
.preempt_count = INIT_PREEMPT_COUNT, \
.addr_limit = KERNEL_DS, \
}
/* how to get the thread information struct from C */
register struct thread_info *__current_thread_info asm("gr15");
#define current_thread_info() ({ __current_thread_info; })
#endif /* __ASSEMBLY__ */
/*
* thread information flags
* - these are process state flags that various assembly files may need to access
* - pending work-to-be-done flags are in LSW
* - other flags in MSW
*/
#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
#define TIF_NOTIFY_RESUME 1 /* callback before returning to user */
#define TIF_SIGPENDING 2 /* signal pending */
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
#define TIF_SINGLESTEP 4 /* restore singlestep on return to user mode */
#define TIF_RESTORE_SIGMASK 5 /* restore signal mask in do_signal() */
#define TIF_MEMDIE 7 /* is terminating due to OOM killer */
#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP)
/* work to do on interrupt/exception return */
#define _TIF_WORK_MASK \
(_TIF_NOTIFY_RESUME | _TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_SINGLESTEP)
/* work to do on any return to u-space */
#define _TIF_ALLWORK_MASK (_TIF_WORK_MASK | _TIF_SYSCALL_TRACE)
#if _TIF_ALLWORK_MASK >= 0x2000
#error "_TIF_ALLWORK_MASK won't fit in an ANDI now (see entry.S)"
#endif
/*
* Thread-synchronous status.
*
* This is different from the flags in that nobody else
* ever touches our thread-synchronous status, so we don't
* have to worry about atomic accesses.
*/
#define TS_USEDFPM 0x0001 /* FPU/Media was used by this task this quantum (SMP) */
#endif /* __KERNEL__ */
#endif /* _ASM_THREAD_INFO_H */

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arch/frv/include/asm/timer-regs.h
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/* timer-regs.h: hardware timer register definitions
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_TIMER_REGS_H
#define _ASM_TIMER_REGS_H
#include <asm/sections.h>
extern unsigned long __nongprelbss __clkin_clock_speed_HZ;
extern unsigned long __nongprelbss __ext_bus_clock_speed_HZ;
extern unsigned long __nongprelbss __res_bus_clock_speed_HZ;
extern unsigned long __nongprelbss __sdram_clock_speed_HZ;
extern unsigned long __nongprelbss __core_bus_clock_speed_HZ;
extern unsigned long __nongprelbss __core_clock_speed_HZ;
extern unsigned long __nongprelbss __dsu_clock_speed_HZ;
extern unsigned long __nongprelbss __serial_clock_speed_HZ;
#define __get_CLKC() ({ *(volatile unsigned long *)(0xfeff9a00); })
static inline void __set_CLKC(unsigned long v)
{
int tmp;
asm volatile(" st%I0.p %2,%M0 \n"
" setlos %3,%1 \n"
" membar \n"
"0: \n"
" subicc %1,#1,%1,icc0 \n"
" bnc icc0,#1,0b \n"
: "=m"(*(volatile unsigned long *) 0xfeff9a00), "=r"(tmp)
: "r"(v), "i"(256)
: "icc0");
}
#define __get_TCTR() ({ *(volatile unsigned long *)(0xfeff9418); })
#define __get_TPRV() ({ *(volatile unsigned long *)(0xfeff9420); })
#define __get_TPRCKSL() ({ *(volatile unsigned long *)(0xfeff9428); })
#define __get_TCSR(T) ({ *(volatile unsigned long *)(0xfeff9400 + 8 * (T)); })
#define __get_TxCKSL(T) ({ *(volatile unsigned long *)(0xfeff9430 + 8 * (T)); })
#define __get_TCSR_DATA(T) ({ __get_TCSR(T) >> 24; })
#define __set_TCTR(V) do { *(volatile unsigned long *)(0xfeff9418) = (V); mb(); } while(0)
#define __set_TPRV(V) do { *(volatile unsigned long *)(0xfeff9420) = (V) << 24; mb(); } while(0)
#define __set_TPRCKSL(V) do { *(volatile unsigned long *)(0xfeff9428) = (V); mb(); } while(0)
#define __set_TCSR(T,V) \
do { *(volatile unsigned long *)(0xfeff9400 + 8 * (T)) = (V); mb(); } while(0)
#define __set_TxCKSL(T,V) \
do { *(volatile unsigned long *)(0xfeff9430 + 8 * (T)) = (V); mb(); } while(0)
#define __set_TCSR_DATA(T,V) __set_TCSR(T, (V) << 24)
#define __set_TxCKSL_DATA(T,V) __set_TxCKSL(T, TxCKSL_EIGHT | __TxCKSL_SELECT((V)))
/* clock control register */
#define CLKC_CMODE 0x0f000000
#define CLKC_SLPL 0x000f0000
#define CLKC_P0 0x00000100
#define CLKC_CM 0x00000003
#define CLKC_CMODE_s 24
/* timer control register - non-readback mode */
#define TCTR_MODE_0 0x00000000
#define TCTR_MODE_2 0x04000000
#define TCTR_MODE_4 0x08000000
#define TCTR_MODE_5 0x0a000000
#define TCTR_RL_LATCH 0x00000000
#define TCTR_RL_RW_LOW8 0x10000000
#define TCTR_RL_RW_HIGH8 0x20000000
#define TCTR_RL_RW_LH8 0x30000000
#define TCTR_SC_CTR0 0x00000000
#define TCTR_SC_CTR1 0x40000000
#define TCTR_SC_CTR2 0x80000000
/* timer control register - readback mode */
#define TCTR_CNT0 0x02000000
#define TCTR_CNT1 0x04000000
#define TCTR_CNT2 0x08000000
#define TCTR_NSTATUS 0x10000000
#define TCTR_NCOUNT 0x20000000
#define TCTR_SC_READBACK 0xc0000000
/* timer control status registers - non-readback mode */
#define TCSRx_DATA 0xff000000
/* timer control status registers - readback mode */
#define TCSRx_OUTPUT 0x80000000
#define TCSRx_NULLCOUNT 0x40000000
#define TCSRx_RL 0x30000000
#define TCSRx_MODE 0x07000000
/* timer clock select registers */
#define TxCKSL_SELECT 0x0f000000
#define __TxCKSL_SELECT(X) ((X) << 24)
#define TxCKSL_EIGHT 0xf0000000
#endif /* _ASM_TIMER_REGS_H */

27
arch/frv/include/asm/timex.h
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@ -1,27 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* timex.h: FR-V architecture timex specifications
*/
#ifndef _ASM_TIMEX_H
#define _ASM_TIMEX_H
#define CLOCK_TICK_RATE 1193180 /* Underlying HZ */
#define CLOCK_TICK_FACTOR 20 /* Factor of both 1000000 and CLOCK_TICK_RATE */
typedef unsigned long cycles_t;
static inline cycles_t get_cycles(void)
{
return 0;
}
#define vxtime_lock() do {} while (0)
#define vxtime_unlock() do {} while (0)
/* This attribute is used in include/linux/jiffies.h alongside with
* __cacheline_aligned_in_smp. It is assumed that __cacheline_aligned_in_smp
* for frv does not contain another section specification.
*/
#define __jiffy_arch_data __attribute__((__section__(".data")))
#endif

28
arch/frv/include/asm/tlb.h
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@ -1,28 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_TLB_H
#define _ASM_TLB_H
#include <asm/tlbflush.h>
#ifdef CONFIG_MMU
extern void check_pgt_cache(void);
#else
#define check_pgt_cache() do {} while(0)
#endif
/*
* we don't need any special per-pte or per-vma handling...
*/
#define tlb_start_vma(tlb, vma) do { } while (0)
#define tlb_end_vma(tlb, vma) do { } while (0)
#define __tlb_remove_tlb_entry(tlb, ptep, address) do { } while (0)
/*
* .. because we flush the whole mm when it fills up
*/
#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
#include <asm-generic/tlb.h>
#endif /* _ASM_TLB_H */

73
arch/frv/include/asm/tlbflush.h
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@ -1,73 +0,0 @@
/* tlbflush.h: TLB flushing functions
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_TLBFLUSH_H
#define _ASM_TLBFLUSH_H
#include <linux/mm.h>
#include <asm/processor.h>
#ifdef CONFIG_MMU
#ifndef __ASSEMBLY__
extern asmlinkage void __flush_tlb_all(void);
extern asmlinkage void __flush_tlb_mm(unsigned long contextid);
extern asmlinkage void __flush_tlb_page(unsigned long contextid, unsigned long start);
extern asmlinkage void __flush_tlb_range(unsigned long contextid,
unsigned long start, unsigned long end);
#endif /* !__ASSEMBLY__ */
#define flush_tlb_all() \
do { \
preempt_disable(); \
__flush_tlb_all(); \
preempt_enable(); \
} while(0)
#define flush_tlb_mm(mm) \
do { \
preempt_disable(); \
__flush_tlb_mm((mm)->context.id); \
preempt_enable(); \
} while(0)
#define flush_tlb_range(vma,start,end) \
do { \
preempt_disable(); \
__flush_tlb_range((vma)->vm_mm->context.id, start, end); \
preempt_enable(); \
} while(0)
#define flush_tlb_page(vma,addr) \
do { \
preempt_disable(); \
__flush_tlb_page((vma)->vm_mm->context.id, addr); \
preempt_enable(); \
} while(0)
#define __flush_tlb_global() flush_tlb_all()
#define flush_tlb() flush_tlb_all()
#define flush_tlb_kernel_range(start, end) flush_tlb_all()
#else
#define flush_tlb() BUG()
#define flush_tlb_all() BUG()
#define flush_tlb_mm(mm) BUG()
#define flush_tlb_page(vma,addr) BUG()
#define flush_tlb_range(mm,start,end) BUG()
#define flush_tlb_kernel_range(start, end) BUG()
#endif
#endif /* _ASM_TLBFLUSH_H */

13
arch/frv/include/asm/topology.h
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@ -1,13 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_TOPOLOGY_H
#define _ASM_TOPOLOGY_H
#ifdef CONFIG_NUMA
#error NUMA not supported yet
#endif /* CONFIG_NUMA */
#include <asm-generic/topology.h>
#endif /* _ASM_TOPOLOGY_H */

22
arch/frv/include/asm/types.h
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@ -1,22 +0,0 @@
/* types.h: FRV types
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_TYPES_H
#define _ASM_TYPES_H
#include <uapi/asm/types.h>
/*
* These aren't exported outside the kernel to avoid name space clashes
*/
#define BITS_PER_LONG 32
#endif /* _ASM_TYPES_H */

285
arch/frv/include/asm/uaccess.h
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@ -1,285 +0,0 @@
/* uaccess.h: userspace accessor functions
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_UACCESS_H
#define _ASM_UACCESS_H
/*
* User space memory access functions
*/
#include <linux/mm.h>
#include <asm/segment.h>
#include <asm/sections.h>
#include <asm/extable.h>
#define __ptr(x) ((unsigned long __force *)(x))
/*
* check that a range of addresses falls within the current address limit
*/
static inline int ___range_ok(unsigned long addr, unsigned long size)
{
#ifdef CONFIG_MMU
int flag = -EFAULT, tmp;
asm volatile (
" addcc %3,%2,%1,icc0 \n" /* set C-flag if addr+size>4GB */
" subcc.p %1,%4,gr0,icc1 \n" /* jump if addr+size>limit */
" bc icc0,#0,0f \n"
" bhi icc1,#0,0f \n"
" setlos #0,%0 \n" /* mark okay */
"0: \n"
: "=r"(flag), "=&r"(tmp)
: "r"(addr), "r"(size), "r"(get_addr_limit()), "0"(flag)
);
return flag;
#else
if (addr < memory_start ||
addr > memory_end ||
size > memory_end - memory_start ||
addr + size > memory_end)
return -EFAULT;
return 0;
#endif
}
#define __range_ok(addr,size) ___range_ok((unsigned long) (addr), (unsigned long) (size))
#define access_ok(type,addr,size) (__range_ok((void __user *)(addr), (size)) == 0)
#define __access_ok(addr,size) (__range_ok((addr), (size)) == 0)
/*
* These are the main single-value transfer routines. They automatically
* use the right size if we just have the right pointer type.
*/
#define __put_user(x, ptr) \
({ \
int __pu_err = 0; \
\
typeof(*(ptr)) __pu_val = (x); \
__chk_user_ptr(ptr); \
\
switch (sizeof (*(ptr))) { \
case 1: \
__put_user_asm(__pu_err, __pu_val, ptr, "b", "r"); \
break; \
case 2: \
__put_user_asm(__pu_err, __pu_val, ptr, "h", "r"); \
break; \
case 4: \
__put_user_asm(__pu_err, __pu_val, ptr, "", "r"); \
break; \
case 8: \
__put_user_asm(__pu_err, __pu_val, ptr, "d", "e"); \
break; \
default: \
__pu_err = __put_user_bad(); \
break; \
} \
__pu_err; \
})
#define put_user(x, ptr) \
({ \
typeof(*(ptr)) __user *_p = (ptr); \
int _e; \
\
_e = __range_ok(_p, sizeof(*_p)); \
if (_e == 0) \
_e = __put_user((x), _p); \
_e; \
})
extern int __put_user_bad(void);
/*
* Tell gcc we read from memory instead of writing: this is because
* we do not write to any memory gcc knows about, so there are no
* aliasing issues.
*/
#ifdef CONFIG_MMU
#define __put_user_asm(err,x,ptr,dsize,constraint) \
do { \
asm volatile("1: st"dsize"%I1 %2,%M1 \n" \
"2: \n" \
".subsection 2 \n" \
"3: setlos %3,%0 \n" \
" bra 2b \n" \
".previous \n" \
".section __ex_table,\"a\" \n" \
" .balign 8 \n" \
" .long 1b,3b \n" \
".previous" \
: "=r" (err) \
: "m" (*__ptr(ptr)), constraint (x), "i"(-EFAULT), "0"(err) \
: "memory"); \
} while (0)
#else
#define __put_user_asm(err,x,ptr,bwl,con) \
do { \
asm(" st"bwl"%I0 %1,%M0 \n" \
" membar \n" \
: \
: "m" (*__ptr(ptr)), con (x) \
: "memory"); \
} while (0)
#endif
/*****************************************************************************/
/*
*
*/
#define __get_user(x, ptr) \
({ \
int __gu_err = 0; \
__chk_user_ptr(ptr); \
\
switch (sizeof(*(ptr))) { \
case 1: { \
unsigned char __gu_val; \
__get_user_asm(__gu_err, __gu_val, ptr, "ub", "=r"); \
(x) = *(__force __typeof__(*(ptr)) *) &__gu_val; \
break; \
} \
case 2: { \
unsigned short __gu_val; \
__get_user_asm(__gu_err, __gu_val, ptr, "uh", "=r"); \
(x) = *(__force __typeof__(*(ptr)) *) &__gu_val; \
break; \
} \
case 4: { \
unsigned int __gu_val; \
__get_user_asm(__gu_err, __gu_val, ptr, "", "=r"); \
(x) = *(__force __typeof__(*(ptr)) *) &__gu_val; \
break; \
} \
case 8: { \
unsigned long long __gu_val; \
__get_user_asm(__gu_err, __gu_val, ptr, "d", "=e"); \
(x) = *(__force __typeof__(*(ptr)) *) &__gu_val; \
break; \
} \
default: \
__gu_err = __get_user_bad(); \
break; \
} \
__gu_err; \
})
#define get_user(x, ptr) \
({ \
const typeof(*(ptr)) __user *_p = (ptr);\
int _e; \
\
_e = __range_ok(_p, sizeof(*_p)); \
if (likely(_e == 0)) \
_e = __get_user((x), _p); \
else \
(x) = (typeof(x)) 0; \
_e; \
})
extern int __get_user_bad(void);
#ifdef CONFIG_MMU
#define __get_user_asm(err,x,ptr,dtype,constraint) \
do { \
asm("1: ld"dtype"%I2 %M2,%1 \n" \
"2: \n" \
".subsection 2 \n" \
"3: setlos %3,%0 \n" \
" setlos #0,%1 \n" \
" bra 2b \n" \
".previous \n" \
".section __ex_table,\"a\" \n" \
" .balign 8 \n" \
" .long 1b,3b \n" \
".previous" \
: "=r" (err), constraint (x) \
: "m" (*__ptr(ptr)), "i"(-EFAULT), "0"(err) \
); \
} while(0)
#else
#define __get_user_asm(err,x,ptr,bwl,con) \
asm(" ld"bwl"%I1 %M1,%0 \n" \
" membar \n" \
: con(x) \
: "m" (*__ptr(ptr)))
#endif
/*****************************************************************************/
/*
*
*/
#define ____force(x) (__force void *)(void __user *)(x)
#ifdef CONFIG_MMU
extern long __memset_user(void *dst, unsigned long count);
extern long __memcpy_user(void *dst, const void *src, unsigned long count);
#define __clear_user(dst,count) __memset_user(____force(dst), (count))
#else
#define __clear_user(dst,count) (memset(____force(dst), 0, (count)), 0)
#endif
static inline unsigned long
raw_copy_from_user(void *to, const void __user *from, unsigned long n)
{
#ifdef CONFIG_MMU
return __memcpy_user(to, (__force const void *)from, n);
#else
memcpy(to, (__force const void *)from, n);
return 0;
#endif
}
static inline unsigned long
raw_copy_to_user(void __user *to, const void *from, unsigned long n)
{
#ifdef CONFIG_MMU
return __memcpy_user((__force void *)to, from, n);
#else
memcpy((__force void *)to, from, n);
return 0;
#endif
}
#define INLINE_COPY_TO_USER
#define INLINE_COPY_FROM_USER
static inline unsigned long __must_check
clear_user(void __user *to, unsigned long n)
{
if (likely(__access_ok(to, n)))
n = __clear_user(to, n);
return n;
}
extern long strncpy_from_user(char *dst, const char __user *src, long count);
extern long strnlen_user(const char __user *src, long count);
#endif /* _ASM_UACCESS_H */

13
arch/frv/include/asm/ucontext.h
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@ -1,13 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_UCONTEXT_H
#define _ASM_UCONTEXT_H
struct ucontext {
unsigned long uc_flags;
struct ucontext *uc_link;
stack_t uc_stack;
struct sigcontext uc_mcontext;
sigset_t uc_sigmask; /* mask last for extensibility */
};
#endif

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