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[PATCH] powerpc: Kill _machine and hard-coded platform numbers 

This removes statically assigned platform numbers and reworks the
powerpc platform probe code to use a better mechanism.  With this,
board support files can simply declare a new machine type with a
macro, and implement a probe() function that uses the flattened
device-tree to detect if they apply for a given machine.

We now have a machine_is() macro that replaces the comparisons of
_machine with the various PLATFORM_* constants.  This commit also
changes various drivers to use the new macro instead of looking at
_machine.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
hifive-unleashed-5.1
Benjamin Herrenschmidt 2006-03-28 23:15:54 +11:00 committed by Paul Mackerras
parent 056cb48a2f
commit e8222502ee
63 changed files with 559 additions and 542 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
Documentation/powerpc/booting-without-of.txt
View File

@ -719,6 +719,11 @@ address which can extend beyond that limit.
- model : this is your board name/model
- #address-cells : address representation for "root" devices
- #size-cells: the size representation for "root" devices
- device_type : This property shouldn't be necessary. However, if
you decide to create a device_type for your root node, make sure it
is _not_ "chrp" unless your platform is a pSeries or PAPR compliant
one for 64-bit, or a CHRP-type machine for 32-bit as this will
matched by the kernel this way.
Additionally, some recommended properties are:

2
arch/powerpc/kernel/asm-offsets.c
View File

@ -105,8 +105,6 @@ int main(void)
DEFINE(ICACHEL1LINESIZE, offsetof(struct ppc64_caches, iline_size));
DEFINE(ICACHEL1LOGLINESIZE, offsetof(struct ppc64_caches, log_iline_size));
DEFINE(ICACHEL1LINESPERPAGE, offsetof(struct ppc64_caches, ilines_per_page));
DEFINE(PLATFORM_LPAR, PLATFORM_LPAR);
/* paca */
DEFINE(PACA_SIZE, sizeof(struct paca_struct));
DEFINE(PACAPACAINDEX, offsetof(struct paca_struct, paca_index));

4
arch/powerpc/kernel/nvram_64.c
View File

@ -160,7 +160,7 @@ static int dev_nvram_ioctl(struct inode *inode, struct file *file,
case IOC_NVRAM_GET_OFFSET: {
int part, offset;
if (_machine != PLATFORM_POWERMAC)
if (!machine_is(powermac))
return -EINVAL;
if (copy_from_user(&part, (void __user*)arg, sizeof(part)) != 0)
return -EFAULT;
@ -444,7 +444,7 @@ static int nvram_setup_partition(void)
* in our nvram, as Apple defined partitions use pretty much
* all of the space
*/
if (_machine == PLATFORM_POWERMAC)
if (machine_is(powermac))
return -ENOSPC;
/* see if we have an OS partition that meets our needs.

4
arch/powerpc/kernel/pci_32.c
View File

@ -787,7 +787,7 @@ pci_busdev_to_OF_node(struct pci_bus *bus, int devfn)
* fix has to be done by making the remapping per-host and always
* filling the pci_to_OF map. --BenH
*/
if (_machine == _MACH_Pmac && busnr >= 0xf0)
if (machine_is(powermac) && busnr >= 0xf0)
busnr -= 0xf0;
else
#endif
@ -1728,7 +1728,7 @@ long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn)
* (bus 0 is HT root), we return the AGP one instead.
*/
#ifdef CONFIG_PPC_PMAC
if (_machine == _MACH_Pmac && machine_is_compatible("MacRISC4"))
if (machine_is(powermac) && machine_is_compatible("MacRISC4"))
if (bus == 0)
bus = 0xf0;
#endif /* CONFIG_PPC_PMAC */

3
arch/powerpc/kernel/proc_ppc64.c
View File

@ -23,6 +23,7 @@
#include <linux/slab.h>
#include <linux/kernel.h>
#include <asm/machdep.h>
#include <asm/vdso_datapage.h>
#include <asm/rtas.h>
#include <asm/uaccess.h>
@ -51,7 +52,7 @@ static int __init proc_ppc64_create(void)
if (!root)
return 1;
if (!(platform_is_pseries() || _machine == PLATFORM_CELL))
if (!machine_is(pseries) && !machine_is(cell))
return 0;
if (!proc_mkdir("rtas", root))

56
arch/powerpc/kernel/prom.c
View File

@ -383,14 +383,14 @@ static int __devinit finish_node_interrupts(struct device_node *np,
/* Apple uses bits in there in a different way, let's
* only keep the real sense bit on macs
*/
if (_machine == PLATFORM_POWERMAC)
if (machine_is(powermac))
sense &= 0x1;
np->intrs[intrcount].sense = map_mpic_senses[sense];
}
#ifdef CONFIG_PPC64
/* We offset irq numbers for the u3 MPIC by 128 in PowerMac */
if (_machine == PLATFORM_POWERMAC && ic && ic->parent) {
if (machine_is(powermac) && ic && ic->parent) {
char *name = get_property(ic->parent, "name", NULL);
if (name && !strcmp(name, "u3"))
np->intrs[intrcount].line += 128;
@ -570,6 +570,18 @@ int __init of_scan_flat_dt(int (*it)(unsigned long node,
return rc;
}
unsigned long __init of_get_flat_dt_root(void)
{
unsigned long p = ((unsigned long)initial_boot_params) +
initial_boot_params->off_dt_struct;
while(*((u32 *)p) == OF_DT_NOP)
p += 4;
BUG_ON (*((u32 *)p) != OF_DT_BEGIN_NODE);
p += 4;
return _ALIGN(p + strlen((char *)p) + 1, 4);
}
/**
* This function can be used within scan_flattened_dt callback to get
* access to properties
@ -612,6 +624,25 @@ void* __init of_get_flat_dt_prop(unsigned long node, const char *name,
} while(1);
}
int __init of_flat_dt_is_compatible(unsigned long node, const char *compat)
{
const char* cp;
unsigned long cplen, l;
cp = of_get_flat_dt_prop(node, "compatible", &cplen);
if (cp == NULL)
return 0;
while (cplen > 0) {
if (strncasecmp(cp, compat, strlen(compat)) == 0)
return 1;
l = strlen(cp) + 1;
cp += l;
cplen -= l;
}
return 0;
}
static void *__init unflatten_dt_alloc(unsigned long *mem, unsigned long size,
unsigned long align)
{
@ -686,7 +717,7 @@ static unsigned long __init unflatten_dt_node(unsigned long mem,
#ifdef DEBUG
if ((strlen(p) + l + 1) != allocl) {
DBG("%s: p: %d, l: %d, a: %d\n",
pathp, strlen(p), l, allocl);
pathp, (int)strlen(p), l, allocl);
}
#endif
p += strlen(p);
@ -951,7 +982,6 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
static int __init early_init_dt_scan_chosen(unsigned long node,
const char *uname, int depth, void *data)
{
u32 *prop;
unsigned long *lprop;
unsigned long l;
char *p;
@ -962,14 +992,6 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
(strcmp(uname, "chosen") != 0 && strcmp(uname, "chosen@0") != 0))
return 0;
/* get platform type */
prop = (u32 *)of_get_flat_dt_prop(node, "linux,platform", NULL);
if (prop == NULL)
return 0;
#ifdef CONFIG_PPC_MULTIPLATFORM
_machine = *prop;
#endif
#ifdef CONFIG_PPC64
/* check if iommu is forced on or off */
if (of_get_flat_dt_prop(node, "linux,iommu-off", NULL) != NULL)
@ -996,15 +1018,15 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
* set of RTAS infos now if available
*/
{
u64 *basep, *entryp;
u64 *basep, *entryp, *sizep;
basep = of_get_flat_dt_prop(node, "linux,rtas-base", NULL);
entryp = of_get_flat_dt_prop(node, "linux,rtas-entry", NULL);
prop = of_get_flat_dt_prop(node, "linux,rtas-size", NULL);
if (basep && entryp && prop) {
sizep = of_get_flat_dt_prop(node, "linux,rtas-size", NULL);
if (basep && entryp && sizep) {
rtas.base = *basep;
rtas.entry = *entryp;
rtas.size = *prop;
rtas.size = *sizep;
}
}
#endif /* CONFIG_PPC_RTAS */
@ -1775,7 +1797,7 @@ static int of_finish_dynamic_node(struct device_node *node)
/* We don't support that function on PowerMac, at least
* not yet
*/
if (_machine == PLATFORM_POWERMAC)
if (machine_is(powermac))
return -ENODEV;
/* fix up new node's linux_phandle field */

51
arch/powerpc/kernel/prom_init.c
View File

@ -180,6 +180,16 @@ static unsigned long __initdata prom_tce_alloc_start;
static unsigned long __initdata prom_tce_alloc_end;
#endif
/* Platforms codes are now obsolete in the kernel. Now only used within this
* file and ultimately gone too. Feel free to change them if you need, they
* are not shared with anything outside of this file anymore
*/
#define PLATFORM_PSERIES 0x0100
#define PLATFORM_PSERIES_LPAR 0x0101
#define PLATFORM_LPAR 0x0001
#define PLATFORM_POWERMAC 0x0400
#define PLATFORM_GENERIC 0x0500
static int __initdata of_platform;
static char __initdata prom_cmd_line[COMMAND_LINE_SIZE];
@ -1492,7 +1502,10 @@ static int __init prom_find_machine_type(void)
int len, i = 0;
#ifdef CONFIG_PPC64
phandle rtas;
int x;
#endif
/* Look for a PowerMac */
len = prom_getprop(_prom->root, "compatible",
compat, sizeof(compat)-1);
if (len > 0) {
@ -1505,28 +1518,36 @@ static int __init prom_find_machine_type(void)
if (strstr(p, RELOC("Power Macintosh")) ||
strstr(p, RELOC("MacRISC")))
return PLATFORM_POWERMAC;
#ifdef CONFIG_PPC64
if (strstr(p, RELOC("Momentum,Maple")))
return PLATFORM_MAPLE;
if (strstr(p, RELOC("IBM,CPB")))
return PLATFORM_CELL;
#endif
i += sl + 1;
}
}
#ifdef CONFIG_PPC64
/* If not a mac, try to figure out if it's an IBM pSeries or any other
* PAPR compliant platform. We assume it is if :
* - /device_type is "chrp" (please, do NOT use that for future
* non-IBM designs !
* - it has /rtas
*/
len = prom_getprop(_prom->root, "model",
compat, sizeof(compat)-1);
if (len <= 0)
return PLATFORM_GENERIC;
compat[len] = 0;
if (strcmp(compat, "chrp"))
return PLATFORM_GENERIC;
/* Default to pSeries. We need to know if we are running LPAR */
rtas = call_prom("finddevice", 1, 1, ADDR("/rtas"));
if (PHANDLE_VALID(rtas)) {
int x = prom_getproplen(rtas, "ibm,hypertas-functions");
if (x != PROM_ERROR) {
prom_printf("Hypertas detected, assuming LPAR !\n");
return PLATFORM_PSERIES_LPAR;
}
if (!PHANDLE_VALID(rtas))
return PLATFORM_GENERIC;
x = prom_getproplen(rtas, "ibm,hypertas-functions");
if (x != PROM_ERROR) {
prom_printf("Hypertas detected, assuming LPAR !\n");
return PLATFORM_PSERIES_LPAR;
}
return PLATFORM_PSERIES;
#else
return PLATFORM_CHRP;
return PLATFORM_GENERIC;
#endif
}
@ -2034,7 +2055,6 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4,
{
struct prom_t *_prom;
unsigned long hdr;
u32 getprop_rval;
unsigned long offset = reloc_offset();
#ifdef CONFIG_PPC32
@ -2070,9 +2090,6 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4,
* between pSeries SMP and pSeries LPAR
*/
RELOC(of_platform) = prom_find_machine_type();
getprop_rval = RELOC(of_platform);
prom_setprop(_prom->chosen, "/chosen", "linux,platform",
&getprop_rval, sizeof(getprop_rval));
/* Bail if this is a kdump kernel. */
if (PHYSICAL_START > 0)

2
arch/powerpc/kernel/rtas-proc.c
View File

@ -257,7 +257,7 @@ static int __init proc_rtas_init(void)
{
struct proc_dir_entry *entry;
if (_machine != PLATFORM_PSERIES && _machine != PLATFORM_PSERIES_LPAR)
if (!machine_is(pseries))
return 1;
rtas_node = of_find_node_by_name(NULL, "rtas");

3
arch/powerpc/kernel/rtas.c
View File

@ -25,6 +25,7 @@
#include <asm/hvcall.h>
#include <asm/semaphore.h>
#include <asm/machdep.h>
#include <asm/firmware.h>
#include <asm/page.h>
#include <asm/param.h>
#include <asm/system.h>
@ -768,7 +769,7 @@ void __init rtas_initialize(void)
* the stop-self token if any
*/
#ifdef CONFIG_PPC64
if (_machine == PLATFORM_PSERIES_LPAR) {
if (machine_is(pseries) && firmware_has_feature(FW_FEATURE_LPAR)) {
rtas_region = min(lmb.rmo_size, RTAS_INSTANTIATE_MAX);
ibm_suspend_me_token = rtas_token("ibm,suspend-me");
}

52
arch/powerpc/kernel/setup-common.c
View File

@ -9,6 +9,9 @@
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#undef DEBUG
#include <linux/config.h>
#include <linux/module.h>
#include <linux/string.h>
@ -41,6 +44,7 @@
#include <asm/time.h>
#include <asm/cputable.h>
#include <asm/sections.h>
#include <asm/firmware.h>
#include <asm/btext.h>
#include <asm/nvram.h>
#include <asm/setup.h>
@ -56,8 +60,6 @@
#include "setup.h"
#undef DEBUG
#ifdef DEBUG
#include <asm/udbg.h>
#define DBG(fmt...) udbg_printf(fmt)
@ -65,10 +67,12 @@
#define DBG(fmt...)
#endif
#ifdef CONFIG_PPC_MULTIPLATFORM
int _machine = 0;
EXPORT_SYMBOL(_machine);
#endif
/* The main machine-dep calls structure
*/
struct machdep_calls ppc_md;
EXPORT_SYMBOL(ppc_md);
struct machdep_calls *machine_id;
EXPORT_SYMBOL(machine_id);
unsigned long klimit = (unsigned long) _end;
@ -168,7 +172,8 @@ static int show_cpuinfo(struct seq_file *m, void *v)
bogosum/(500000/HZ), bogosum/(5000/HZ) % 100);
#endif /* CONFIG_SMP && CONFIG_PPC32 */
seq_printf(m, "timebase\t: %lu\n", ppc_tb_freq);
if (ppc_md.name)
seq_printf(m, "platform\t: %s\n", ppc_md.name);
if (ppc_md.show_cpuinfo != NULL)
ppc_md.show_cpuinfo(m);
@ -387,7 +392,7 @@ void __init smp_setup_cpu_maps(void)
* On pSeries LPAR, we need to know how many cpus
* could possibly be added to this partition.
*/
if (_machine == PLATFORM_PSERIES_LPAR &&
if (machine_is(pseries) && firmware_has_feature(FW_FEATURE_LPAR) &&
(dn = of_find_node_by_path("/rtas"))) {
int num_addr_cell, num_size_cell, maxcpus;
unsigned int *ireg;
@ -456,3 +461,34 @@ static int __init early_xmon(char *p)
}
early_param("xmon", early_xmon);
#endif
void probe_machine(void)
{
extern struct machdep_calls __machine_desc_start;
extern struct machdep_calls __machine_desc_end;
/*
* Iterate all ppc_md structures until we find the proper
* one for the current machine type
*/
DBG("Probing machine type ...\n");
for (machine_id = &__machine_desc_start;
machine_id < &__machine_desc_end;
machine_id++) {
DBG(" %s ...", machine_id->name);
memcpy(&ppc_md, machine_id, sizeof(struct machdep_calls));
if (ppc_md.probe()) {
DBG(" match !\n");
break;
}
DBG("\n");
}
/* What can we do if we didn't find ? */
if (machine_id >= &__machine_desc_end) {
DBG("No suitable machine found !\n");
for (;;);
}
printk(KERN_INFO "Using %s machine description\n", ppc_md.name);
}

58
arch/powerpc/kernel/setup_32.c
View File

@ -67,10 +67,6 @@ unsigned int DMA_MODE_WRITE;
int have_of = 1;
#ifdef CONFIG_PPC_MULTIPLATFORM
extern void prep_init(void);
extern void pmac_init(void);
extern void chrp_init(void);
dev_t boot_dev;
#endif /* CONFIG_PPC_MULTIPLATFORM */
@ -82,9 +78,6 @@ unsigned long SYSRQ_KEY = 0x54;
unsigned long vgacon_remap_base;
#endif
struct machdep_calls ppc_md;
EXPORT_SYMBOL(ppc_md);
/*
* These are used in binfmt_elf.c to put aux entries on the stack
* for each elf executable being started.
@ -120,48 +113,6 @@ unsigned long __init early_init(unsigned long dt_ptr)
return KERNELBASE + offset;
}
#ifdef CONFIG_PPC_MULTIPLATFORM
/*
* The PPC_MULTIPLATFORM version of platform_init...
*/
void __init platform_init(void)
{
/* if we didn't get any bootinfo telling us what we are... */
if (_machine == 0) {
/* prep boot loader tells us if we're prep or not */
if ( *(unsigned long *)(KERNELBASE) == (0xdeadc0de) )
_machine = _MACH_prep;
}
#ifdef CONFIG_PPC_PREP
/* not much more to do here, if prep */
if (_machine == _MACH_prep) {
prep_init();
return;
}
#endif
#ifdef CONFIG_ADB
if (strstr(cmd_line, "adb_sync")) {
extern int __adb_probe_sync;
__adb_probe_sync = 1;
}
#endif /* CONFIG_ADB */
switch (_machine) {
#ifdef CONFIG_PPC_PMAC
case _MACH_Pmac:
pmac_init();
break;
#endif
#ifdef CONFIG_PPC_CHRP
case _MACH_chrp:
chrp_init();
break;
#endif
}
}
#endif
/*
* Find out what kind of machine we're on and save any data we need
@ -187,8 +138,12 @@ void __init machine_init(unsigned long dt_ptr, unsigned long phys)
strlcpy(cmd_line, CONFIG_CMDLINE, sizeof(cmd_line));
#endif /* CONFIG_CMDLINE */
/* Base init based on machine type */
#ifdef CONFIG_PPC_MULTIPLATFORM
probe_machine();
#else
/* Base init based on machine type. Obsoloete, please kill ! */
platform_init();
#endif
#ifdef CONFIG_6xx
if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
@ -359,7 +314,4 @@ void __init setup_arch(char **cmdline_p)
if ( ppc_md.progress ) ppc_md.progress("arch: exit", 0x3eab);
paging_init();
/* this is for modules since _machine can be a define -- Cort */
ppc_md.ppc_machine = _machine;
}

56
arch/powerpc/kernel/setup_64.c
View File

@ -95,11 +95,6 @@ int dcache_bsize;
int icache_bsize;
int ucache_bsize;
/* The main machine-dep calls structure
*/
struct machdep_calls ppc_md;
EXPORT_SYMBOL(ppc_md);
#ifdef CONFIG_MAGIC_SYSRQ
unsigned long SYSRQ_KEY;
#endif /* CONFIG_MAGIC_SYSRQ */
@ -160,32 +155,6 @@ early_param("smt-enabled", early_smt_enabled);
#define check_smt_enabled()
#endif /* CONFIG_SMP */
extern struct machdep_calls pSeries_md;
extern struct machdep_calls pmac_md;
extern struct machdep_calls maple_md;
extern struct machdep_calls cell_md;
extern struct machdep_calls iseries_md;
/* Ultimately, stuff them in an elf section like initcalls... */
static struct machdep_calls __initdata *machines[] = {
#ifdef CONFIG_PPC_PSERIES
&pSeries_md,
#endif /* CONFIG_PPC_PSERIES */
#ifdef CONFIG_PPC_PMAC
&pmac_md,
#endif /* CONFIG_PPC_PMAC */
#ifdef CONFIG_PPC_MAPLE
&maple_md,
#endif /* CONFIG_PPC_MAPLE */
#ifdef CONFIG_PPC_CELL
&cell_md,
#endif
#ifdef CONFIG_PPC_ISERIES
&iseries_md,
#endif
NULL
};
/*
* Early initialization entry point. This is called by head.S
* with MMU translation disabled. We rely on the "feature" of
@ -207,12 +176,10 @@ static struct machdep_calls __initdata *machines[] = {
void __init early_setup(unsigned long dt_ptr)
{
static struct machdep_calls **mach;
/* Enable early debugging if any specified (see udbg.h) */
udbg_early_init();
DBG(" -> early_setup()\n");
DBG(" -> early_setup(), dt_ptr: 0x%lx\n", dt_ptr);
/*
* Do early initializations using the flattened device
@ -229,22 +196,8 @@ void __init early_setup(unsigned long dt_ptr)
get_paca()->stab_real = __pa((u64)&initial_stab);
get_paca()->stab_addr = (u64)&initial_stab;
/*
* Iterate all ppc_md structures until we find the proper
* one for the current machine type
*/
DBG("Probing machine type for platform %x...\n", _machine);
for (mach = machines; *mach; mach++) {
if ((*mach)->probe(_machine))
break;
}
/* What can we do if we didn't find ? */
if (*mach == NULL) {
DBG("No suitable machine found !\n");
for (;;);
}
ppc_md = **mach;
/* Probe the machine type */
probe_machine();
#ifdef CONFIG_CRASH_DUMP
kdump_setup();
@ -346,7 +299,7 @@ static void __init initialize_cache_info(void)
const char *dc, *ic;
/* Then read cache informations */
if (_machine == PLATFORM_POWERMAC) {
if (machine_is(powermac)) {
dc = "d-cache-block-size";
ic = "i-cache-block-size";
} else {
@ -490,7 +443,6 @@ void __init setup_system(void)
printk("ppc64_pft_size = 0x%lx\n", ppc64_pft_size);
printk("ppc64_interrupt_controller = 0x%ld\n",
ppc64_interrupt_controller);
printk("platform = 0x%x\n", _machine);
printk("physicalMemorySize = 0x%lx\n", lmb_phys_mem_size());
printk("ppc64_caches.dcache_line_size = 0x%x\n",
ppc64_caches.dline_size);

35
arch/powerpc/kernel/traps.c
View File

@ -97,7 +97,6 @@ static DEFINE_SPINLOCK(die_lock);
int die(const char *str, struct pt_regs *regs, long err)
{
static int die_counter, crash_dump_start = 0;
int nl = 0;
if (debugger(regs))
return 1;
@ -106,7 +105,7 @@ int die(const char *str, struct pt_regs *regs, long err)
spin_lock_irq(&die_lock);
bust_spinlocks(1);
#ifdef CONFIG_PMAC_BACKLIGHT
if (_machine == _MACH_Pmac) {
if (machine_is(powermac)) {
set_backlight_enable(1);
set_backlight_level(BACKLIGHT_MAX);
}
@ -114,46 +113,18 @@ int die(const char *str, struct pt_regs *regs, long err)
printk("Oops: %s, sig: %ld [#%d]\n", str, err, ++die_counter);
#ifdef CONFIG_PREEMPT
printk("PREEMPT ");
nl = 1;
#endif
#ifdef CONFIG_SMP
printk("SMP NR_CPUS=%d ", NR_CPUS);
nl = 1;
#endif
#ifdef CONFIG_DEBUG_PAGEALLOC
printk("DEBUG_PAGEALLOC ");
nl = 1;
#endif
#ifdef CONFIG_NUMA
printk("NUMA ");
nl = 1;
#endif
#ifdef CONFIG_PPC64
switch (_machine) {
case PLATFORM_PSERIES:
printk("PSERIES ");
nl = 1;
break;
case PLATFORM_PSERIES_LPAR:
printk("PSERIES LPAR ");
nl = 1;
break;
case PLATFORM_ISERIES_LPAR:
printk("ISERIES LPAR ");
nl = 1;
break;
case PLATFORM_POWERMAC:
printk("POWERMAC ");
nl = 1;
break;
case PLATFORM_CELL:
printk("CELL ");
nl = 1;
break;
}
#endif
if (nl)
printk("\n");
printk("%s\n", ppc_md.name ? "" : ppc_md.name);
print_modules();
show_regs(regs);
bust_spinlocks(0);

9
arch/powerpc/kernel/vdso.c
View File

@ -33,6 +33,7 @@
#include <asm/machdep.h>
#include <asm/cputable.h>
#include <asm/sections.h>
#include <asm/firmware.h>
#include <asm/vdso.h>
#include <asm/vdso_datapage.h>
@ -667,7 +668,13 @@ void __init vdso_init(void)
vdso_data->version.major = SYSTEMCFG_MAJOR;
vdso_data->version.minor = SYSTEMCFG_MINOR;
vdso_data->processor = mfspr(SPRN_PVR);
vdso_data->platform = _machine;
/*
* Fake the old platform number for pSeries and iSeries and add
* in LPAR bit if necessary
*/
vdso_data->platform = machine_is(iseries) ? 0x200 : 0x100;
if (firmware_has_feature(FW_FEATURE_LPAR))
vdso_data->platform |= 1;
vdso_data->physicalMemorySize = lmb_phys_mem_size();
vdso_data->dcache_size = ppc64_caches.dsize;
vdso_data->dcache_line_size = ppc64_caches.dline_size;

379
arch/powerpc/kernel/vmlinux.lds.S
View File

@ -1,9 +1,11 @@
#include <linux/config.h>
#ifdef CONFIG_PPC64
#include <asm/page.h>
#define PROVIDE32(x) PROVIDE(__unused__##x)
#else
#define PAGE_SIZE 4096
#define KERNELBASE CONFIG_KERNEL_START
#define PROVIDE32(x) PROVIDE(x)
#endif
#include <asm-generic/vmlinux.lds.h>
@ -18,43 +20,42 @@ jiffies = jiffies_64 + 4;
#endif
SECTIONS
{
/* Sections to be discarded. */
/DISCARD/ : {
*(.exitcall.exit)
*(.exit.data)
}
/* Sections to be discarded. */
/DISCARD/ : {
*(.exitcall.exit)
*(.exit.data)
}
. = KERNELBASE;
. = KERNELBASE;
/*
* Text, read only data and other permanent read-only sections
*/
/* Text and gots */
.text : {
*(.text .text.*)
SCHED_TEXT
LOCK_TEXT
KPROBES_TEXT
*(.fixup)
/* Read-only sections, merged into text segment: */
.text : {
*(.text .text.*)
SCHED_TEXT
LOCK_TEXT
KPROBES_TEXT
*(.fixup)
#ifdef CONFIG_PPC32
*(.got1)
__got2_start = .;
*(.got2)
__got2_end = .;
#else
. = ALIGN(PAGE_SIZE);
_etext = .;
#endif
}
#ifdef CONFIG_PPC32
_etext = .;
PROVIDE (etext = .);
*(.got1)
__got2_start = .;
*(.got2)
__got2_end = .;
#endif /* CONFIG_PPC32 */
RODATA
.fini : { *(.fini) } =0
.ctors : { *(.ctors) }
.dtors : { *(.dtors) }
. = ALIGN(PAGE_SIZE);
_etext = .;
PROVIDE32 (etext = .);
}
.fixup : { *(.fixup) }
#endif
/* Read-only data */
RODATA
/* Exception & bug tables */
__ex_table : {
__start___ex_table = .;
*(__ex_table)
@ -67,192 +68,172 @@ SECTIONS
__stop___bug_table = .;
}
#ifdef CONFIG_PPC64
/*
* Init sections discarded at runtime
*/
. = ALIGN(PAGE_SIZE);
__init_begin = .;
.init.text : {
_sinittext = .;
*(.init.text)
_einittext = .;
}
/* .exit.text is discarded at runtime, not link time,
* to deal with references from __bug_table
*/
.exit.text : { *(.exit.text) }
.init.data : {
*(.init.data);
__vtop_table_begin = .;
*(.vtop_fixup);
__vtop_table_end = .;
__ptov_table_begin = .;
*(.ptov_fixup);
__ptov_table_end = .;
}
. = ALIGN(16);
.init.setup : {
__setup_start = .;
*(.init.setup)
__setup_end = .;
}
.initcall.init : {
__initcall_start = .;
*(.initcall1.init)
*(.initcall2.init)
*(.initcall3.init)
*(.initcall4.init)
*(.initcall5.init)
*(.initcall6.init)
*(.initcall7.init)
__initcall_end = .;
}
.con_initcall.init : {
__con_initcall_start = .;
*(.con_initcall.init)
__con_initcall_end = .;
}
SECURITY_INIT
. = ALIGN(8);
__ftr_fixup : {
__start___ftr_fixup = .;
*(__ftr_fixup)
__stop___ftr_fixup = .;
}
RODATA
#endif
. = ALIGN(PAGE_SIZE);
.init.ramfs : {
__initramfs_start = .;
*(.init.ramfs)
__initramfs_end = .;
}
#ifdef CONFIG_PPC32
/* Read-write section, merged into data segment: */
. = ALIGN(PAGE_SIZE);
_sdata = .;
.data :
{
*(.data)
*(.data1)
*(.sdata)
*(.sdata2)
*(.got.plt) *(.got)
*(.dynamic)
CONSTRUCTORS
}
. = ALIGN(PAGE_SIZE);
__nosave_begin = .;
.data_nosave : { *(.data.nosave) }
. = ALIGN(PAGE_SIZE);
__nosave_end = .;
. = ALIGN(32);
.data.cacheline_aligned : { *(.data.cacheline_aligned) }
_edata = .;
PROVIDE (edata = .);
. = ALIGN(8192);
.data.init_task : { *(.data.init_task) }
#endif
/* will be freed after init */
. = ALIGN(PAGE_SIZE);
__init_begin = .;
.init.text : {
_sinittext = .;
*(.init.text)
_einittext = .;
}
#ifdef CONFIG_PPC32
/* .exit.text is discarded at runtime, not link time,
to deal with references from __bug_table */
.exit.text : { *(.exit.text) }
#endif
.init.data : {
*(.init.data);
__vtop_table_begin = .;
*(.vtop_fixup);
__vtop_table_end = .;
__ptov_table_begin = .;
*(.ptov_fixup);
__ptov_table_end = .;
}
. = ALIGN(16);
.init.setup : {
__setup_start = .;
*(.init.setup)
__setup_end = .;
}
.initcall.init : {
__initcall_start = .;
*(.initcall1.init)
*(.initcall2.init)
*(.initcall3.init)
*(.initcall4.init)
*(.initcall5.init)
*(.initcall6.init)
*(.initcall7.init)
__initcall_end = .;
}
.con_initcall.init : {
__con_initcall_start = .;
*(.con_initcall.init)
__con_initcall_end = .;
}
SECURITY_INIT
#ifdef CONFIG_PPC32
__start___ftr_fixup = .;
__ftr_fixup : { *(__ftr_fixup) }
__stop___ftr_fixup = .;
. = ALIGN(32);
#else
. = ALIGN(PAGE_SIZE);
.init.ramfs : {
__initramfs_start = .;
*(.init.ramfs)
__initramfs_end = .;
}
. = ALIGN(128);
#endif
.data.percpu : {
__per_cpu_start = .;
*(.data.percpu)
__per_cpu_end = .;
}
. = ALIGN(8);
.machine.desc : {
__machine_desc_start = . ;
*(.machine.desc)
__machine_desc_end = . ;
}
/* freed after init ends here */
. = ALIGN(PAGE_SIZE);
__init_end = .;
/*
* And now the various read/write data
*/
. = ALIGN(PAGE_SIZE);
_sdata = .;
#ifdef CONFIG_PPC32
. = ALIGN(32);
#endif
.data.percpu : {
__per_cpu_start = .;
*(.data.percpu)
__per_cpu_end = .;
}
. = ALIGN(PAGE_SIZE);
#ifdef CONFIG_PPC64
. = ALIGN(16384);
__init_end = .;
/* freed after init ends here */
/* Read/write sections */
. = ALIGN(PAGE_SIZE);
. = ALIGN(16384);
_sdata = .;
/* The initial task and kernel stack */
.data.init_task : {
*(.data.init_task)
}
. = ALIGN(PAGE_SIZE);
.data.page_aligned : {
*(.data.page_aligned)
}
.data.cacheline_aligned : {
*(.data.cacheline_aligned)
}
.data : {
*(.data .data.rel* .toc1)
*(.branch_lt)
}
.opd : {
*(.opd)
}
.got : {
__toc_start = .;
*(.got)
*(.toc)
. = ALIGN(PAGE_SIZE);
_edata = .;
}
. = ALIGN(PAGE_SIZE);
.data :
{
*(.data)
*(.sdata)
*(.got.plt) *(.got)
}
#else
__initramfs_start = .;
.init.ramfs : {
*(.init.ramfs)
}
__initramfs_end = .;
.data : {
*(.data .data.rel* .toc1)
*(.branch_lt)
}
. = ALIGN(4096);
__init_end = .;
.opd : {
*(.opd)
}
. = ALIGN(4096);
_sextratext = .;
_eextratext = .;
__bss_start = .;
.got : {
__toc_start = .;
*(.got)
*(.toc)
}
#endif
.bss : {
__bss_start = .;
*(.sbss) *(.scommon)
*(.dynbss)
*(.bss)
*(COMMON)
__bss_stop = .;
}
. = ALIGN(PAGE_SIZE);
_edata = .;
PROVIDE32 (edata = .);
#ifdef CONFIG_PPC64
. = ALIGN(PAGE_SIZE);
#endif
_end = . ;
/* The initial task and kernel stack */
#ifdef CONFIG_PPC32
PROVIDE (end = .);
. = ALIGN(8192);
#else
. = ALIGN(16384);
#endif
.data.init_task : {
*(.data.init_task)
}
. = ALIGN(PAGE_SIZE);
.data.page_aligned : {
*(.data.page_aligned)
}
.data.cacheline_aligned : {
*(.data.cacheline_aligned)
}
. = ALIGN(PAGE_SIZE);
__data_nosave : {
__nosave_begin = .;
*(.data.nosave)
. = ALIGN(PAGE_SIZE);
__nosave_end = .;
}
/*
* And finally the bss
*/
.bss : {
__bss_start = .;
*(.sbss) *(.scommon)
*(.dynbss)
*(.bss)
*(COMMON)
__bss_stop = .;
}
. = ALIGN(PAGE_SIZE);
_end = . ;
PROVIDE32 (end = .);
}

7
arch/powerpc/mm/hash_utils_64.c
View File

@ -167,7 +167,7 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
* normal insert callback here.
*/
#ifdef CONFIG_PPC_ISERIES
if (_machine == PLATFORM_ISERIES_LPAR)
if (machine_is(iseries))
ret = iSeries_hpte_insert(hpteg, va,
paddr,
tmp_mode,
@ -176,7 +176,7 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
else
#endif
#ifdef CONFIG_PPC_PSERIES
if (_machine & PLATFORM_LPAR)
if (machine_is(pseries) && firmware_has_feature(FW_FEATURE_LPAR))
ret = pSeries_lpar_hpte_insert(hpteg, va,
paddr,
tmp_mode,
@ -295,8 +295,7 @@ static void __init htab_init_page_sizes(void)
* Not in the device-tree, let's fallback on known size
* list for 16M capable GP & GR
*/
if ((_machine != PLATFORM_ISERIES_LPAR) &&
cpu_has_feature(CPU_FTR_16M_PAGE))
if (cpu_has_feature(CPU_FTR_16M_PAGE) && !machine_is(iseries))
memcpy(mmu_psize_defs, mmu_psize_defaults_gp,
sizeof(mmu_psize_defaults_gp));
found:

11
arch/powerpc/platforms/cell/setup.c
View File

@ -195,9 +195,13 @@ static void __init cell_init_early(void)
}
static int __init cell_probe(int platform)
static int __init cell_probe(void)
{
if (platform != PLATFORM_CELL)
/* XXX This is temporary, the Cell maintainer will come up with
* more appropriate detection logic
*/
unsigned long root = of_get_flat_dt_root();
if (!of_flat_dt_is_compatible(root, "IBM,CPBW-1.0"))
return 0;
return 1;
@ -212,7 +216,8 @@ static int cell_check_legacy_ioport(unsigned int baseport)
return -ENODEV;
}
struct machdep_calls __initdata cell_md = {
define_machine(cell) {
.name = "Cell",
.probe = cell_probe,
.setup_arch = cell_setup_arch,
.init_early = cell_init_early,

13
arch/powerpc/platforms/chrp/setup.c
View File

@ -292,6 +292,10 @@ void __init chrp_setup_arch(void)
pci_create_OF_bus_map();
#ifdef CONFIG_SMP
smp_ops = &chrp_smp_ops;
#endif /* CONFIG_SMP */
/*
* Print the banner, then scroll down so boot progress
* can be printed. -- Cort
@ -506,8 +510,15 @@ chrp_init2(void)
ppc_md.progress(" Have fun! ", 0x7777);
}
void __init chrp_init(void)
static int __init chrp_probe(void)
{
char *dtype = of_get_flat_dt_prop(of_get_flat_dt_root(),
"device_type", NULL);
if (dtype == NULL)
return 0;
if (strcmp(dtype, "chrp"))
return 0;
ISA_DMA_THRESHOLD = ~0L;
DMA_MODE_READ = 0x44;
DMA_MODE_WRITE = 0x48;

9
arch/powerpc/platforms/iseries/setup.c
View File

@ -675,9 +675,10 @@ static void iseries_dedicated_idle(void)
void __init iSeries_init_IRQ(void) { }
#endif
static int __init iseries_probe(int platform)
static int __init iseries_probe(void)
{
if (PLATFORM_ISERIES_LPAR != platform)
unsigned long root = of_get_flat_dt_root();
if (!of_flat_dt_is_compatible(root, "IBM,iSeries"))
return 0;
powerpc_firmware_features |= FW_FEATURE_ISERIES;
@ -686,7 +687,8 @@ static int __init iseries_probe(int platform)
return 1;
}
struct machdep_calls __initdata iseries_md = {
define_machine(iseries) {
.name = "iSeries",
.setup_arch = iSeries_setup_arch,
.show_cpuinfo = iSeries_show_cpuinfo,
.init_IRQ = iSeries_init_IRQ,
@ -930,7 +932,6 @@ void build_flat_dt(struct iseries_flat_dt *dt, unsigned long phys_mem_size)
/* /chosen */
dt_start_node(dt, "chosen");
dt_prop_u32(dt, "linux,platform", PLATFORM_ISERIES_LPAR);
dt_prop_str(dt, "bootargs", cmd_line);
if (cmd_mem_limit)
dt_prop_u64(dt, "linux,memory-limit", cmd_mem_limit);

8
arch/powerpc/platforms/maple/setup.c
View File

@ -259,9 +259,10 @@ static void __init maple_progress(char *s, unsigned short hex)
/*
* Called very early, MMU is off, device-tree isn't unflattened
*/
static int __init maple_probe(int platform)
static int __init maple_probe(void)
{
if (platform != PLATFORM_MAPLE)
unsigned long root = of_get_flat_dt_root();
if (!of_flat_dt_is_compatible(root, "Momentum,Maple"))
return 0;
/*
* On U3, the DART (iommu) must be allocated now since it
@ -274,7 +275,8 @@ static int __init maple_probe(int platform)
return 1;
}
struct machdep_calls __initdata maple_md = {
define_machine(maple_md) {
.name = "Maple",
.probe = maple_probe,
.setup_arch = maple_setup_arch,
.init_early = maple_init_early,

4
arch/powerpc/platforms/powermac/bootx_init.c
View File

@ -161,9 +161,7 @@ static void __init bootx_dt_add_prop(char *name, void *data, int size,
static void __init bootx_add_chosen_props(unsigned long base,
unsigned long *mem_end)
{
u32 val = _MACH_Pmac;
bootx_dt_add_prop("linux,platform", &val, 4, mem_end);
u32 val;
if (bootx_info->kernelParamsOffset) {
char *args = (char *)((unsigned long)bootx_info) +

2
arch/powerpc/platforms/powermac/feature.c
View File

@ -2951,7 +2951,7 @@ static void *pmac_early_vresume_data;
void pmac_set_early_video_resume(void (*proc)(void *data), void *data)
{
if (_machine != _MACH_Pmac)
if (!machine_is(powermac))
return;
preempt_disable();
pmac_early_vresume_proc = proc;

3
arch/powerpc/platforms/powermac/low_i2c.c
View File

@ -1457,6 +1457,9 @@ int __init pmac_i2c_init(void)
return 0;
i2c_inited = 1;
if (!machine_is(powermac))
return 0;
/* Probe keywest-i2c busses */
kw_i2c_probe();

2
arch/powerpc/platforms/powermac/nvram.c
View File

@ -597,7 +597,7 @@ int __init pmac_nvram_init(void)
}
#ifdef CONFIG_PPC32
if (_machine == _MACH_chrp && nvram_naddrs == 1) {
if (machine_is(chrp) && nvram_naddrs == 1) {
nvram_data = ioremap(r1.start, s1);
nvram_mult = 1;
ppc_md.nvram_read_val = direct_nvram_read_byte;

5
arch/powerpc/platforms/powermac/pci.c
View File

@ -1201,7 +1201,7 @@ void __init pmac_pcibios_after_init(void)
#ifdef CONFIG_PPC32
void pmac_pci_fixup_cardbus(struct pci_dev* dev)
{
if (_machine != _MACH_Pmac)
if (!machine_is(powermac))
return;
/*
* Fix the interrupt routing on the various cardbus bridges
@ -1244,8 +1244,9 @@ void pmac_pci_fixup_pciata(struct pci_dev* dev)
* On PowerMacs, we try to switch any PCI ATA controller to
* fully native mode
*/
if (_machine != _MACH_Pmac)
if (!machine_is(powermac))
return;
/* Some controllers don't have the class IDE */
if (dev->vendor == PCI_VENDOR_ID_PROMISE)
switch(dev->device) {

2
arch/powerpc/platforms/powermac/pfunc_base.c
View File

@ -336,6 +336,8 @@ int __init pmac_pfunc_base_install(void)
return 0;
pfbase_inited = 1;
if (!machine_is(powermac))
return 0;
DBG("Installing base platform functions...\n");

72
arch/powerpc/platforms/powermac/setup.c
View File

@ -350,6 +350,13 @@ static void __init pmac_setup_arch(void)
smp_ops = &psurge_smp_ops;
#endif
#endif /* CONFIG_SMP */
#ifdef CONFIG_ADB
if (strstr(cmd_line, "adb_sync")) {
extern int __adb_probe_sync;
__adb_probe_sync = 1;
}
#endif /* CONFIG_ADB */
}
char *bootpath;
@ -576,30 +583,6 @@ pmac_halt(void)
pmac_power_off();
}
#ifdef CONFIG_PPC32
void __init pmac_init(void)
{
/* isa_io_base gets set in pmac_pci_init */
isa_mem_base = PMAC_ISA_MEM_BASE;
pci_dram_offset = PMAC_PCI_DRAM_OFFSET;
ISA_DMA_THRESHOLD = ~0L;
DMA_MODE_READ = 1;
DMA_MODE_WRITE = 2;
ppc_md = pmac_md;
#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
#ifdef CONFIG_BLK_DEV_IDE_PMAC
ppc_ide_md.ide_init_hwif = pmac_ide_init_hwif_ports;
ppc_ide_md.default_io_base = pmac_ide_get_base;
#endif /* CONFIG_BLK_DEV_IDE_PMAC */
#endif /* defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) */
if (ppc_md.progress) ppc_md.progress("pmac_init(): exit", 0);
}
#endif
/*
* Early initialization.
*/
@ -646,6 +629,12 @@ static int __init pmac_declare_of_platform_devices(void)
{
struct device_node *np;
if (machine_is(chrp))
return -1;
if (!machine_is(powermac))
return 0;
np = of_find_node_by_name(NULL, "valkyrie");
if (np)
of_platform_device_create(np, "valkyrie", NULL);
@ -666,12 +655,15 @@ device_initcall(pmac_declare_of_platform_devices);
/*
* Called very early, MMU is off, device-tree isn't unflattened
*/
static int __init pmac_probe(int platform)
static int __init pmac_probe(void)
{
#ifdef CONFIG_PPC64
if (platform != PLATFORM_POWERMAC)
unsigned long root = of_get_flat_dt_root();
if (!of_flat_dt_is_compatible(root, "Power Macintosh") &&
!of_flat_dt_is_compatible(root, "MacRISC"))
return 0;
#ifdef CONFIG_PPC64
/*
* On U3, the DART (iommu) must be allocated now since it
* has an impact on htab_initialize (due to the large page it
@ -681,6 +673,23 @@ static int __init pmac_probe(int platform)
alloc_dart_table();
#endif
#ifdef CONFIG_PPC32
/* isa_io_base gets set in pmac_pci_init */
isa_mem_base = PMAC_ISA_MEM_BASE;
pci_dram_offset = PMAC_PCI_DRAM_OFFSET;
ISA_DMA_THRESHOLD = ~0L;
DMA_MODE_READ = 1;
DMA_MODE_WRITE = 2;
#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
#ifdef CONFIG_BLK_DEV_IDE_PMAC
ppc_ide_md.ide_init_hwif = pmac_ide_init_hwif_ports;
ppc_ide_md.default_io_base = pmac_ide_get_base;
#endif /* CONFIG_BLK_DEV_IDE_PMAC */
#endif /* defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) */
#endif /* CONFIG_PPC32 */
#ifdef CONFIG_PMAC_SMU
/*
* SMU based G5s need some memory below 2Gb, at least the current
@ -709,10 +718,8 @@ static int pmac_pci_probe_mode(struct pci_bus *bus)
}
#endif
struct machdep_calls __initdata pmac_md = {
#if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC64)
.cpu_die = generic_mach_cpu_die,
#endif
define_machine(powermac) {
.name = "PowerMac",
.probe = pmac_probe,
.setup_arch = pmac_setup_arch,
.init_early = pmac_init_early,
@ -746,4 +753,7 @@ struct machdep_calls __initdata pmac_md = {
.pcibios_after_init = pmac_pcibios_after_init,
.phys_mem_access_prot = pci_phys_mem_access_prot,
#endif
#if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC64)
.cpu_die = generic_mach_cpu_die,
#endif
};

4
arch/powerpc/platforms/powermac/time.c
View File

@ -336,10 +336,10 @@ static struct pmu_sleep_notifier time_sleep_notifier = {
*/
void __init pmac_calibrate_decr(void)
{
#ifdef CONFIG_PM
#if defined(CONFIG_PM) && defined(CONFIG_ADB_PMU)
/* XXX why here? */
pmu_register_sleep_notifier(&time_sleep_notifier);
#endif /* CONFIG_PM */
#endif
generic_calibrate_decr();

2
arch/powerpc/platforms/pseries/eeh.c
View File

@ -1018,7 +1018,7 @@ static int __init eeh_init_proc(void)
{
struct proc_dir_entry *e;
if (platform_is_pseries()) {
if (machine_is(pseries)) {
e = create_proc_entry("ppc64/eeh", 0, NULL);
if (e)
e->proc_fops = &proc_eeh_operations;

2
arch/powerpc/platforms/pseries/pci.c
View File

@ -120,7 +120,7 @@ static void fixup_winbond_82c105(struct pci_dev* dev)
int i;
unsigned int reg;
if (!platform_is_pseries())
if (!machine_is(pseries))
return;
printk("Using INTC for W82c105 IDE controller.\n");

1
arch/powerpc/platforms/pseries/pci_dlpar.c
View File

@ -28,6 +28,7 @@
#include <linux/pci.h>
#include <asm/pci-bridge.h>
#include <asm/ppc-pci.h>
#include <asm/firmware.h>
static struct pci_bus *
find_bus_among_children(struct pci_bus *bus,

5
arch/powerpc/platforms/pseries/reconfig.c
View File

@ -17,8 +17,9 @@
#include <linux/proc_fs.h>
#include <asm/prom.h>
#include <asm/pSeries_reconfig.h>
#include <asm/machdep.h>
#include <asm/uaccess.h>
#include <asm/pSeries_reconfig.h>
@ -508,7 +509,7 @@ static int proc_ppc64_create_ofdt(void)
{
struct proc_dir_entry *ent;
if (!platform_is_pseries())
if (!machine_is(pseries))
return 0;
ent = create_proc_entry("ppc64/ofdt", S_IWUSR, NULL);

3
arch/powerpc/platforms/pseries/rtasd.c
View File

@ -27,6 +27,7 @@
#include <asm/prom.h>
#include <asm/nvram.h>
#include <asm/atomic.h>
#include <asm/machdep.h>
#if 0
#define DEBUG(A...) printk(KERN_ERR A)
@ -481,7 +482,7 @@ static int __init rtas_init(void)
{
struct proc_dir_entry *entry;
if (!platform_is_pseries())
if (!machine_is(pseries))
return 0;
/* No RTAS */

39
arch/powerpc/platforms/pseries/setup.c
View File

@ -372,24 +372,42 @@ static int pSeries_check_legacy_ioport(unsigned int baseport)
/*
* Called very early, MMU is off, device-tree isn't unflattened
*/
extern struct machdep_calls pSeries_md;
static int __init pSeries_probe(int platform)
static int __init pSeries_probe_hypertas(unsigned long node,
const char *uname, int depth,
void *data)
{
if (platform != PLATFORM_PSERIES &&
platform != PLATFORM_PSERIES_LPAR)
if (depth != 1 ||
(strcmp(uname, "rtas") != 0 && strcmp(uname, "rtas@0") != 0))
return 0;
if (of_get_flat_dt_prop(node, "ibm,hypertas-functions", NULL) != NULL)
powerpc_firmware_features |= FW_FEATURE_LPAR;
return 1;
}
static int __init pSeries_probe(void)
{
char *dtype = of_get_flat_dt_prop(of_get_flat_dt_root(),
"device_type", NULL);
if (dtype == NULL)
return 0;
if (strcmp(dtype, "chrp"))
return 0;
/* if we have some ppc_md fixups for LPAR to do, do
* it here ...
*/
DBG("pSeries detected, looking for LPAR capability...\n");
if (platform == PLATFORM_PSERIES_LPAR)
powerpc_firmware_features |= FW_FEATURE_LPAR;
/* Now try to figure out if we are running on LPAR */
of_scan_flat_dt(pSeries_probe_hypertas, NULL);
DBG("Machine is%s LPAR !\n",
(powerpc_firmware_features & FW_FEATURE_LPAR) ? "" : " not");
return 1;
}
DECLARE_PER_CPU(unsigned long, smt_snooze_delay);
static void pseries_dedicated_idle_sleep(void)
@ -501,7 +519,8 @@ static void pseries_kexec_cpu_down(int crash_shutdown, int secondary)
}
#endif
struct machdep_calls __initdata pSeries_md = {
define_machine(pseries) {
.name = "pSeries",
.probe = pSeries_probe,
.setup_arch = pSeries_setup_arch,
.init_early = pSeries_init_early,

12
arch/ppc/platforms/prep_setup.c
View File

@ -1067,15 +1067,13 @@ prep_map_io(void)
static int __init
prep_request_io(void)
{
if (_machine == _MACH_prep) {
#ifdef CONFIG_NVRAM
request_region(PREP_NVRAM_AS0, 0x8, "nvram");
request_region(PREP_NVRAM_AS0, 0x8, "nvram");
#endif
request_region(0x00,0x20,"dma1");
request_region(0x40,0x20,"timer");
request_region(0x80,0x10,"dma page reg");
request_region(0xc0,0x20,"dma2");
}
request_region(0x00,0x20,"dma1");
request_region(0x40,0x20,"timer");
request_region(0x80,0x10,"dma page reg");
request_region(0xc0,0x20,"dma2");
return 0;
}

5
drivers/char/generic_nvram.c
View File

@ -22,6 +22,9 @@
#include <linux/smp_lock.h>
#include <asm/uaccess.h>
#include <asm/nvram.h>
#ifdef CONFIG_PPC_PMAC
#include <asm/machdep.h>
#endif
#define NVRAM_SIZE 8192
@ -92,7 +95,7 @@ static int nvram_ioctl(struct inode *inode, struct file *file,
case IOC_NVRAM_GET_OFFSET: {
int part, offset;
if (_machine != _MACH_Pmac)
if (!machine_is(powermac))
return -EINVAL;
if (copy_from_user(&part, (void __user*)arg, sizeof(part)) != 0)
return -EFAULT;

2
drivers/ide/pci/via82cxxx.c
View File

@ -440,7 +440,7 @@ static void __devinit init_hwif_via82cxxx(ide_hwif_t *hwif)
#if defined(CONFIG_PPC_CHRP) && defined(CONFIG_PPC32)
if(_machine == _MACH_chrp && _chrp_type == _CHRP_Pegasos) {
if(machine_is(chrp) && _chrp_type == _CHRP_Pegasos) {
hwif->irq = hwif->channel ? 15 : 14;
}
#endif

2
drivers/ide/ppc/pmac.c
View File

@ -1677,7 +1677,7 @@ MODULE_DEVICE_TABLE(pci, pmac_ide_pci_match);
void __init
pmac_ide_probe(void)
{
if (_machine != _MACH_Pmac)
if (!machine_is(powermac))
return;
#ifdef CONFIG_BLK_DEV_IDE_PMAC_ATA100FIRST

4
drivers/ieee1394/ohci1394.c
View File

@ -3526,7 +3526,7 @@ static void ohci1394_pci_remove(struct pci_dev *pdev)
static int ohci1394_pci_resume (struct pci_dev *pdev)
{
#ifdef CONFIG_PPC_PMAC
if (_machine == _MACH_Pmac) {
if (machine_is(powermac)) {
struct device_node *of_node;
/* Re-enable 1394 */
@ -3545,7 +3545,7 @@ static int ohci1394_pci_resume (struct pci_dev *pdev)
static int ohci1394_pci_suspend (struct pci_dev *pdev, pm_message_t state)
{
#ifdef CONFIG_PPC_PMAC
if (_machine == _MACH_Pmac) {
if (machine_is(powermac)) {
struct device_node *of_node;
/* Disable 1394 */

3
drivers/macintosh/adb.c
View File

@ -42,6 +42,7 @@
#include <asm/semaphore.h>
#ifdef CONFIG_PPC
#include <asm/prom.h>
#include <asm/machdep.h>
#endif
@ -294,7 +295,7 @@ int __init adb_init(void)
int i;
#ifdef CONFIG_PPC32
if ( (_machine != _MACH_chrp) && (_machine != _MACH_Pmac) )
if (!machine_is(chrp) && !machine_is(powermac))
return 0;
#endif
#ifdef CONFIG_MAC

4
drivers/macintosh/adbhid.c
View File

@ -1206,8 +1206,8 @@ init_ms_a3(int id)
static int __init adbhid_init(void)
{
#ifndef CONFIG_MAC
if ( (_machine != _MACH_chrp) && (_machine != _MACH_Pmac) )
return 0;
if (!machine_is(chrp) && !machine_is(powermac))
return 0;
#endif
led_request.complete = 1;

4
drivers/macintosh/mediabay.c
View File

@ -839,8 +839,8 @@ static int __init media_bay_init(void)
media_bays[i].cd_index = -1;
#endif
}
if (_machine != _MACH_Pmac)
return -ENODEV;
if (!machine_is(powermac))
return 0;
macio_register_driver(&media_bay_driver);

2
drivers/media/video/planb.c
View File

@ -2156,7 +2156,7 @@ static int find_planb(void)
struct pci_dev *pdev;
int rc;
if (_machine != _MACH_Pmac)
if (!machine_is(powermac))
return 0;
planb_devices = find_devices("planb");

2
drivers/net/tulip/de4x5.c
View File

@ -4160,7 +4160,7 @@ get_hw_addr(struct net_device *dev)
** If the address starts with 00 a0, we have to bit-reverse
** each byte of the address.
*/
if ( (_machine & _MACH_Pmac) &&
if ( machine_is(powermac) &&
(dev->dev_addr[0] == 0) &&
(dev->dev_addr[1] == 0xa0) )
{

2
drivers/scsi/mesh.c
View File

@ -1748,7 +1748,7 @@ static int mesh_host_reset(struct scsi_cmnd *cmd)
static void set_mesh_power(struct mesh_state *ms, int state)
{
if (_machine != _MACH_Pmac)
if (!machine_is(powermac))
return;
if (state) {
pmac_call_feature(PMAC_FTR_MESH_ENABLE, macio_get_of_node(ms->mdev), 0, 1);

4
drivers/usb/core/hcd-pci.c
View File

@ -296,7 +296,7 @@ done:
#ifdef CONFIG_PPC_PMAC
/* Disable ASIC clocks for USB */
if (_machine == _MACH_Pmac) {
if (machine_is(powermac)) {
struct device_node *of_node;
of_node = pci_device_to_OF_node (dev);
@ -331,7 +331,7 @@ int usb_hcd_pci_resume (struct pci_dev *dev)
#ifdef CONFIG_PPC_PMAC
/* Reenable ASIC clocks for USB */
if (_machine == _MACH_Pmac) {
if (machine_is(powermac)) {
struct device_node *of_node;
of_node = pci_device_to_OF_node (dev);

7
drivers/video/aty/aty128fb.c
View File

@ -67,6 +67,7 @@
#include <asm/io.h>
#ifdef CONFIG_PPC_PMAC
#include <asm/machdep.h>
#include <asm/pmac_feature.h>
#include <asm/prom.h>
#include <asm/pci-bridge.h>
@ -1748,7 +1749,7 @@ static int __init aty128_init(struct pci_dev *pdev, const struct pci_device_id *
var = default_var;
#ifdef CONFIG_PPC_PMAC
if (_machine == _MACH_Pmac) {
if (machine_is(powermac)) {
/* Indicate sleep capability */
if (par->chip_gen == rage_M3) {
pmac_call_feature(PMAC_FTR_DEVICE_CAN_WAKE, NULL, 0, 1);
@ -2011,7 +2012,7 @@ static int aty128fb_blank(int blank, struct fb_info *fb)
return 0;
#ifdef CONFIG_PMAC_BACKLIGHT
if ((_machine == _MACH_Pmac) && blank)
if (machine_is(powermac) && blank)
set_backlight_enable(0);
#endif /* CONFIG_PMAC_BACKLIGHT */
@ -2029,7 +2030,7 @@ static int aty128fb_blank(int blank, struct fb_info *fb)
aty128_set_lcd_enable(par, par->lcd_on && !blank);
}
#ifdef CONFIG_PMAC_BACKLIGHT
if ((_machine == _MACH_Pmac) && !blank)
if (machine_is(powermac) && !blank)
set_backlight_enable(1);
#endif /* CONFIG_PMAC_BACKLIGHT */
return 0;

7
drivers/video/aty/atyfb_base.c
View File

@ -75,6 +75,7 @@
#include "ati_ids.h"
#ifdef __powerpc__
#include <asm/machdep.h>
#include <asm/prom.h>
#include "../macmodes.h"
#endif
@ -2516,7 +2517,7 @@ static int __init aty_init(struct fb_info *info, const char *name)
memset(&var, 0, sizeof(var));
#ifdef CONFIG_PPC
if (_machine == _MACH_Pmac) {
if (machine_is(powermac)) {
/*
* FIXME: The NVRAM stuff should be put in a Mac-specific file, as it
* applies to all Mac video cards
@ -2671,7 +2672,7 @@ static int atyfb_blank(int blank, struct fb_info *info)
return 0;
#ifdef CONFIG_PMAC_BACKLIGHT
if ((_machine == _MACH_Pmac) && blank > FB_BLANK_NORMAL)
if (machine_is(powermac) && blank > FB_BLANK_NORMAL)
set_backlight_enable(0);
#elif defined(CONFIG_FB_ATY_GENERIC_LCD)
if (par->lcd_table && blank > FB_BLANK_NORMAL &&
@ -2703,7 +2704,7 @@ static int atyfb_blank(int blank, struct fb_info *info)
aty_st_le32(CRTC_GEN_CNTL, gen_cntl, par);
#ifdef CONFIG_PMAC_BACKLIGHT
if ((_machine == _MACH_Pmac) && blank <= FB_BLANK_NORMAL)
if (machine_is(powermac) && blank <= FB_BLANK_NORMAL)
set_backlight_enable(1);
#elif defined(CONFIG_FB_ATY_GENERIC_LCD)
if (par->lcd_table && blank <= FB_BLANK_NORMAL &&

4
drivers/video/aty/radeon_pm.c
View File

@ -20,7 +20,7 @@
#include <linux/agp_backend.h>
#ifdef CONFIG_PPC_PMAC
#include <asm/processor.h>
#include <asm/machdep.h>
#include <asm/prom.h>
#include <asm/pmac_feature.h>
#endif
@ -2745,7 +2745,7 @@ void radeonfb_pm_init(struct radeonfb_info *rinfo, int dynclk)
rinfo->pm_mode |= radeon_pm_off;
}
#if defined(CONFIG_PPC_PMAC)
if (_machine == _MACH_Pmac && rinfo->of_node) {
if (machine_is(powermac) && rinfo->of_node) {
if (rinfo->is_mobility && rinfo->pm_reg &&
rinfo->family <= CHIP_FAMILY_RV250)
rinfo->pm_mode |= radeon_pm_d2;

4
drivers/video/cirrusfb.c
View File

@ -60,8 +60,8 @@
#include <asm/amigahw.h>
#endif
#ifdef CONFIG_PPC_PREP
#include <asm/processor.h>
#define isPReP (_machine == _MACH_prep)
#include <asm/machdep.h>
#define isPReP (machine_is(prep))
#else
#define isPReP 0
#endif

3
drivers/video/matrox/matroxfb_base.c
View File

@ -115,6 +115,7 @@
#include <asm/uaccess.h>
#ifdef CONFIG_PPC_PMAC
#include <asm/machdep.h>
unsigned char nvram_read_byte(int);
static int default_vmode = VMODE_NVRAM;
static int default_cmode = CMODE_NVRAM;
@ -1833,7 +1834,7 @@ static int initMatrox2(WPMINFO struct board* b){
/* FIXME: Where to move this?! */
#if defined(CONFIG_PPC_PMAC)
#ifndef MODULE
if (_machine == _MACH_Pmac) {
if (machine_is(powermac)) {
struct fb_var_screeninfo var;
if (default_vmode <= 0 || default_vmode > VMODE_MAX)
default_vmode = VMODE_640_480_60;

5
drivers/video/nvidia/nvidia.c
View File

@ -29,6 +29,7 @@
#include <asm/pci-bridge.h>
#endif
#ifdef CONFIG_PMAC_BACKLIGHT
#include <asm/machdep.h>
#include <asm/backlight.h>
#endif
@ -1353,7 +1354,7 @@ static int nvidiafb_blank(int blank, struct fb_info *info)
NVWriteCrtc(par, 0x1a, vesa);
#ifdef CONFIG_PMAC_BACKLIGHT
if (par->FlatPanel && _machine == _MACH_Pmac) {
if (par->FlatPanel && machine_is(powermac)) {
set_backlight_enable(!blank);
}
#endif
@ -1688,7 +1689,7 @@ static int __devinit nvidiafb_probe(struct pci_dev *pd,
info->fix.id,
par->FbMapSize / (1024 * 1024), info->fix.smem_start);
#ifdef CONFIG_PMAC_BACKLIGHT
if (par->FlatPanel && _machine == _MACH_Pmac)
if (par->FlatPanel && machine_is(powermac))
register_backlight_controller(&nvidia_backlight_controller,
par, "mnca");
#endif

2
drivers/video/radeonfb.c
View File

@ -1596,7 +1596,7 @@ static int radeonfb_blank (int blank, struct fb_info *info)
return 0;
#ifdef CONFIG_PMAC_BACKLIGHT
if (rinfo->dviDisp_type == MT_LCD && _machine == _MACH_Pmac) {
if (rinfo->dviDisp_type == MT_LCD && machine_is(powermac)) {
set_backlight_enable(!blank);
return 0;
}

9
drivers/video/riva/fbdev.c
View File

@ -49,6 +49,7 @@
#include <asm/pci-bridge.h>
#endif
#ifdef CONFIG_PMAC_BACKLIGHT
#include <asm/machdep.h>
#include <asm/backlight.h>
#endif
@ -1247,7 +1248,7 @@ static int rivafb_blank(int blank, struct fb_info *info)
CRTCout(par, 0x1a, vesa);
#ifdef CONFIG_PMAC_BACKLIGHT
if ( par->FlatPanel && _machine == _MACH_Pmac) {
if ( par->FlatPanel && machine_is(powermac)) {
set_backlight_enable(!blank);
}
#endif
@ -2037,9 +2038,9 @@ static int __devinit rivafb_probe(struct pci_dev *pd,
info->fix.smem_len / (1024 * 1024),
info->fix.smem_start);
#ifdef CONFIG_PMAC_BACKLIGHT
if (default_par->FlatPanel && _machine == _MACH_Pmac)
register_backlight_controller(&riva_backlight_controller,
default_par, "mnca");
if (default_par->FlatPanel && machine_is(powermac))
register_backlight_controller(&riva_backlight_controller,
default_par, "mnca");
#endif
NVTRACE_LEAVE();
return 0;

3
fs/partitions/mac.c
View File

@ -12,6 +12,7 @@
#include "mac.h"
#ifdef CONFIG_PPC_PMAC
#include <asm/machdep.h>
extern void note_bootable_part(dev_t dev, int part, int goodness);
#endif
@ -79,7 +80,7 @@ int mac_partition(struct parsed_partitions *state, struct block_device *bdev)
* If this is the first bootable partition, tell the
* setup code, in case it wants to make this the root.
*/
if (_machine == _MACH_Pmac) {
if (machine_is(powermac)) {
int goodness = 0;
mac_fix_string(part->processor, 16);

26
include/asm-powerpc/machdep.h
View File

@ -47,6 +47,7 @@ struct smp_ops_t {
#endif
struct machdep_calls {
char *name;
#ifdef CONFIG_PPC64
void (*hpte_invalidate)(unsigned long slot,
unsigned long va,
@ -85,9 +86,9 @@ struct machdep_calls {
void (*iommu_dev_setup)(struct pci_dev *dev);
void (*iommu_bus_setup)(struct pci_bus *bus);
void (*irq_bus_setup)(struct pci_bus *bus);
#endif
#endif /* CONFIG_PPC64 */
int (*probe)(int platform);
int (*probe)(void);
void (*setup_arch)(void);
void (*init_early)(void);
/* Optional, may be NULL. */
@ -207,8 +208,6 @@ struct machdep_calls {
/* Called at then very end of pcibios_init() */
void (*pcibios_after_init)(void);
/* this is for modules, since _machine can be a define -- Cort */
int ppc_machine;
#endif /* CONFIG_PPC32 */
/* Called to shutdown machine specific hardware not already controlled
@ -244,7 +243,26 @@ struct machdep_calls {
extern void power4_idle(void);
extern void ppc6xx_idle(void);
/*
* ppc_md contains a copy of the machine description structure for the
* current platform. machine_id contains the initial address where the
* description was found during boot.
*/
extern struct machdep_calls ppc_md;
extern struct machdep_calls *machine_id;
#define __machine_desc __attribute__ ((__section__ (".machine.desc")))
#define define_machine(name) struct machdep_calls mach_##name __machine_desc =
#define machine_is(name) \
({ \
extern struct machdep_calls mach_##name \
__attribute__((weak)); \
machine_id == &mach_##name; \
})
extern void probe_machine(void);
extern char cmd_line[COMMAND_LINE_SIZE];
#ifdef CONFIG_PPC_PMAC

2
include/asm-powerpc/pmac_feature.h
View File

@ -305,7 +305,7 @@ extern void pmac_feature_init(void);
extern void pmac_set_early_video_resume(void (*proc)(void *data), void *data);
extern void pmac_call_early_video_resume(void);
#define PMAC_FTR_DEF(x) ((_MACH_Pmac << 16) | (x))
#define PMAC_FTR_DEF(x) ((0x6660000) | (x))
/* The AGP driver registers itself here */
extern void pmac_register_agp_pm(struct pci_dev *bridge,

37
include/asm-powerpc/processor.h
View File

@ -22,22 +22,6 @@
* -- BenH.
*/
/* Platforms codes (to be obsoleted) */
#define PLATFORM_PSERIES 0x0100
#define PLATFORM_PSERIES_LPAR 0x0101
#define PLATFORM_ISERIES_LPAR 0x0201
#define PLATFORM_LPAR 0x0001
#define PLATFORM_POWERMAC 0x0400
#define PLATFORM_MAPLE 0x0500
#define PLATFORM_PREP 0x0600
#define PLATFORM_CHRP 0x0700
#define PLATFORM_CELL 0x1000
/* Compat platform codes for 32 bits */
#define _MACH_prep PLATFORM_PREP
#define _MACH_Pmac PLATFORM_POWERMAC
#define _MACH_chrp PLATFORM_CHRP
/* PREP sub-platform types see residual.h for these */
#define _PREP_Motorola 0x01 /* motorola prep */
#define _PREP_Firm 0x02 /* firmworks prep */
@ -49,15 +33,14 @@
#define _CHRP_IBM 0x05 /* IBM chrp, the longtrail and longtrail 2 */
#define _CHRP_Pegasos 0x06 /* Genesi/bplan's Pegasos and Pegasos2 */
#ifdef __KERNEL__
#define platform_is_pseries() (_machine == PLATFORM_PSERIES || \
_machine == PLATFORM_PSERIES_LPAR)
#if defined(__KERNEL__) && defined(CONFIG_PPC32)
extern int _chrp_type;
#ifdef CONFIG_PPC_PREP
/* what kind of prep workstation we are */
extern int _prep_type;
extern int _chrp_type;
/*
* This is used to identify the board type from a given PReP board
@ -69,18 +52,12 @@ extern unsigned char ucBoardRevMaj, ucBoardRevMin;
#endif /* CONFIG_PPC_PREP */
#if defined(CONFIG_PPC_MULTIPLATFORM)
extern int _machine;
#elif defined(CONFIG_PPC_ISERIES)
/*
* iSeries is soon to become MULTIPLATFORM hopefully ...
*/
#define _machine PLATFORM_ISERIES_LPAR
#else
#ifndef CONFIG_PPC_MULTIPLATFORM
#define _machine 0
#endif /* CONFIG_PPC_MULTIPLATFORM */
#endif /* __KERNEL__ */
#endif /* defined(__KERNEL__) && defined(CONFIG_PPC32) */
/*
* Default implementation of macro that returns current
* instruction pointer ("program counter").

14
include/asm-powerpc/prom.h
View File

@ -149,12 +149,14 @@ extern struct device_node *of_node_get(struct device_node *node);
extern void of_node_put(struct device_node *node);
/* For scanning the flat device-tree at boot time */
int __init of_scan_flat_dt(int (*it)(unsigned long node,
const char *uname, int depth,
void *data),
void *data);
void* __init of_get_flat_dt_prop(unsigned long node, const char *name,
unsigned long *size);
extern int __init of_scan_flat_dt(int (*it)(unsigned long node,
const char *uname, int depth,
void *data),
void *data);
extern void* __init of_get_flat_dt_prop(unsigned long node, const char *name,
unsigned long *size);
extern int __init of_flat_dt_is_compatible(unsigned long node, const char *name);
extern unsigned long __init of_get_flat_dt_root(void);
/* For updating the device tree at runtime */
extern void of_attach_node(struct device_node *);

3
include/asm-powerpc/vdso_datapage.h
View File

@ -55,6 +55,9 @@ struct vdso_data {
__u32 minor; /* Minor number 0x14 */
} version;
/* Note about the platform flags: it now only contains the lpar
* bit. The actual platform number is dead and burried
*/
__u32 platform; /* Platform flags 0x18 */
__u32 processor; /* Processor type 0x1C */
__u64 processorCount; /* # of physical processors 0x20 */

12
include/asm-ppc/machdep.h
View File

@ -19,6 +19,18 @@ struct pci_dev;
struct seq_file;
struct file;
/*
* This is for compatibility with ARCH=powerpc.
*/
#define machine_is(x) __MACHINE_IS_##x
#define __MACHINE_IS_powermac 0
#define __MACHINE_IS_chrp 0
#ifdef CONFIG_PPC_PREP
#define __MACHINE_IS_prep 1
#else
#define __MACHINE_IS_prep 0
#endif
/* We export this macro for external modules like Alsa to know if
* ppc_md.feature_call is implemented or not
*/

2
sound/oss/dmasound/dmasound_awacs.c
View File

@ -2814,7 +2814,7 @@ int __init dmasound_awacs_init(void)
struct device_node *io = NULL, *info = NULL;
int vol, res;
if (_machine != _MACH_Pmac)
if (!machine_is(powermac))
return -ENODEV;
awacs_subframe = 0;

2
sound/ppc/pmac.c
View File

@ -869,7 +869,7 @@ static int __init snd_pmac_detect(struct snd_pmac *chip)
u32 layout_id = 0;
if (_machine != _MACH_Pmac)
if (!machine_is(powermac))
return -ENODEV;
chip->subframe = 0;