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[PATCH] frv: implement and export various things required by modules 

Export a number of features required to build all the modules.  It also
implements the following simple features:

 (*) csum_partial_copy_from_user() for MMU as well as no-MMU.

 (*) __ucmpdi2().

so that they can be exported too.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
hifive-unleashed-5.1
David Howells 2006-01-08 01:01:19 -08:00 committed by Linus Torvalds
parent 8369ce4cfe
commit 402344012e
14 changed files with 155 additions and 14 deletions
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25
arch/frv/kernel/frv_ksyms.c
View File

@ -16,10 +16,11 @@
#include <asm/semaphore.h>
#include <asm/checksum.h>
#include <asm/hardirq.h>
#include <asm/current.h>
#include <asm/cacheflush.h>
extern void dump_thread(struct pt_regs *, struct user *);
extern long __memcpy_user(void *dst, const void *src, size_t count);
extern long __memset_user(void *dst, const void *src, size_t count);
/* platform dependent support */
@ -50,7 +51,11 @@ EXPORT_SYMBOL(disable_irq);
EXPORT_SYMBOL(__res_bus_clock_speed_HZ);
EXPORT_SYMBOL(__page_offset);
EXPORT_SYMBOL(__memcpy_user);
EXPORT_SYMBOL(flush_dcache_page);
EXPORT_SYMBOL(__memset_user);
EXPORT_SYMBOL(frv_dcache_writeback);
EXPORT_SYMBOL(frv_cache_invalidate);
EXPORT_SYMBOL(frv_icache_invalidate);
EXPORT_SYMBOL(frv_cache_wback_inv);
#ifndef CONFIG_MMU
EXPORT_SYMBOL(memory_start);
@ -72,6 +77,9 @@ EXPORT_SYMBOL(memcmp);
EXPORT_SYMBOL(memscan);
EXPORT_SYMBOL(memmove);
EXPORT_SYMBOL(__outsl_ns);
EXPORT_SYMBOL(__insl_ns);
EXPORT_SYMBOL(get_wchan);
#ifdef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
@ -80,14 +88,13 @@ EXPORT_SYMBOL(atomic_test_and_OR_mask);
EXPORT_SYMBOL(atomic_test_and_XOR_mask);
EXPORT_SYMBOL(atomic_add_return);
EXPORT_SYMBOL(atomic_sub_return);
EXPORT_SYMBOL(__xchg_8);
EXPORT_SYMBOL(__xchg_16);
EXPORT_SYMBOL(__xchg_32);
EXPORT_SYMBOL(__cmpxchg_8);
EXPORT_SYMBOL(__cmpxchg_16);
EXPORT_SYMBOL(__cmpxchg_32);
#endif
EXPORT_SYMBOL(__debug_bug_printk);
EXPORT_SYMBOL(__delay_loops_MHz);
/*
* libgcc functions - functions that are used internally by the
* compiler... (prototypes are not correct though, but that
@ -101,6 +108,8 @@ extern void __divdi3(void);
extern void __lshrdi3(void);
extern void __moddi3(void);
extern void __muldi3(void);
extern void __mulll(void);
extern void __umulll(void);
extern void __negdi2(void);
extern void __ucmpdi2(void);
extern void __udivdi3(void);
@ -116,8 +125,10 @@ EXPORT_SYMBOL(__ashrdi3);
EXPORT_SYMBOL(__lshrdi3);
//EXPORT_SYMBOL(__moddi3);
EXPORT_SYMBOL(__muldi3);
EXPORT_SYMBOL(__mulll);
EXPORT_SYMBOL(__umulll);
EXPORT_SYMBOL(__negdi2);
//EXPORT_SYMBOL(__ucmpdi2);
EXPORT_SYMBOL(__ucmpdi2);
//EXPORT_SYMBOL(__udivdi3);
//EXPORT_SYMBOL(__udivmoddi4);
//EXPORT_SYMBOL(__umoddi3);

17
arch/frv/kernel/irq.c
View File

@ -32,6 +32,7 @@
#include <linux/irq.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/module.h>
#include <asm/atomic.h>
#include <asm/io.h>
@ -178,6 +179,8 @@ void disable_irq_nosync(unsigned int irq)
spin_unlock_irqrestore(&level->lock, flags);
}
EXPORT_SYMBOL(disable_irq_nosync);
/**
* disable_irq - disable an irq and wait for completion
* @irq: Interrupt to disable
@ -204,6 +207,8 @@ void disable_irq(unsigned int irq)
#endif
}
EXPORT_SYMBOL(disable_irq);
/**
* enable_irq - enable handling of an irq
* @irq: Interrupt to enable
@ -268,6 +273,8 @@ void enable_irq(unsigned int irq)
spin_unlock_irqrestore(&level->lock, flags);
}
EXPORT_SYMBOL(enable_irq);
/*****************************************************************************/
/*
* handles all normal device IRQ's
@ -425,6 +432,8 @@ int request_irq(unsigned int irq,
return retval;
}
EXPORT_SYMBOL(request_irq);
/**
* free_irq - free an interrupt
* @irq: Interrupt line to free
@ -496,6 +505,8 @@ void free_irq(unsigned int irq, void *dev_id)
}
}
EXPORT_SYMBOL(free_irq);
/*
* IRQ autodetection code..
*
@ -519,6 +530,8 @@ unsigned long probe_irq_on(void)
return 0;
}
EXPORT_SYMBOL(probe_irq_on);
/*
* Return a mask of triggered interrupts (this
* can handle only legacy ISA interrupts).
@ -542,6 +555,8 @@ unsigned int probe_irq_mask(unsigned long xmask)
return 0;
}
EXPORT_SYMBOL(probe_irq_mask);
/*
* Return the one interrupt that triggered (this can
* handle any interrupt source).
@ -571,6 +586,8 @@ int probe_irq_off(unsigned long xmask)
return -1;
}
EXPORT_SYMBOL(probe_irq_off);
/* this was setup_x86_irq but it seems pretty generic */
int setup_irq(unsigned int irq, struct irqaction *new)
{

2
arch/frv/kernel/pm.c
View File

@ -13,6 +13,7 @@
#include <linux/config.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/pm.h>
#include <linux/pm_legacy.h>
#include <linux/sched.h>
@ -27,6 +28,7 @@
#include "local.h"
void (*pm_power_off)(void);
EXPORT_SYMBOL(pm_power_off);
extern void frv_change_cmode(int);

3
arch/frv/kernel/time.c
View File

@ -189,6 +189,8 @@ void do_gettimeofday(struct timeval *tv)
tv->tv_usec = usec;
}
EXPORT_SYMBOL(do_gettimeofday);
int do_settimeofday(struct timespec *tv)
{
time_t wtm_sec, sec = tv->tv_sec;
@ -218,6 +220,7 @@ int do_settimeofday(struct timespec *tv)
clock_was_set();
return 0;
}
EXPORT_SYMBOL(do_settimeofday);
/*

3
arch/frv/kernel/traps.c
View File

@ -19,6 +19,7 @@
#include <linux/string.h>
#include <linux/linkage.h>
#include <linux/init.h>
#include <linux/module.h>
#include <asm/setup.h>
#include <asm/fpu.h>
@ -250,6 +251,8 @@ void dump_stack(void)
show_stack(NULL, NULL);
}
EXPORT_SYMBOL(dump_stack);
void show_stack(struct task_struct *task, unsigned long *sp)
{
}

7
arch/frv/kernel/uaccess.c
View File

@ -10,6 +10,7 @@
*/
#include <linux/mm.h>
#include <linux/module.h>
#include <asm/uaccess.h>
/*****************************************************************************/
@ -58,8 +59,11 @@ long strncpy_from_user(char *dst, const char *src, long count)
memset(p, 0, count); /* clear remainder of buffer [security] */
return err;
} /* end strncpy_from_user() */
EXPORT_SYMBOL(strncpy_from_user);
/*****************************************************************************/
/*
* Return the size of a string (including the ending 0)
@ -92,4 +96,7 @@ long strnlen_user(const char *src, long count)
}
return p - src + 1; /* return length including NUL */
} /* end strnlen_user() */
EXPORT_SYMBOL(strnlen_user);

2
arch/frv/lib/Makefile
View File

@ -3,6 +3,6 @@
#
lib-y := \
__ashldi3.o __lshrdi3.o __muldi3.o __ashrdi3.o __negdi2.o \
__ashldi3.o __lshrdi3.o __muldi3.o __ashrdi3.o __negdi2.o __ucmpdi2.o \
checksum.o memcpy.o memset.o atomic-ops.o \
outsl_ns.o outsl_sw.o insl_ns.o insl_sw.o cache.o

45
arch/frv/lib/__ucmpdi2.S 100644
View File

@ -0,0 +1,45 @@
/* __ucmpdi2.S: 64-bit unsigned compare
*
* 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.
*/
.text
.p2align 4
###############################################################################
#
# int __ucmpdi2(unsigned long long a [GR8:GR9],
# unsigned long long b [GR10:GR11])
#
# - returns 0, 1, or 2 as a <, =, > b respectively.
#
###############################################################################
.globl __ucmpdi2
.type __ucmpdi2,@function
__ucmpdi2:
or.p gr8,gr0,gr4
subcc gr8,gr10,gr0,icc0
setlos.p #0,gr8
bclr icc0,#2 ; a.msw < b.msw
setlos.p #2,gr8
bhilr icc0,#0 ; a.msw > b.msw
subcc.p gr9,gr11,gr0,icc1
setlos #0,gr8
setlos.p #2,gr9
setlos #1,gr7
cknc icc1,cc6
cor.p gr9,gr0,gr8, cc6,#1
cckls icc1,cc4, cc6,#1
andcr cc6,cc4,cc4
cor gr7,gr0,gr8, cc4,#1
bralr
.size __ucmpdi2, .-__ucmpdi2

31
arch/frv/lib/checksum.c
View File

@ -33,6 +33,7 @@
#include <net/checksum.h>
#include <asm/checksum.h>
#include <linux/module.h>
static inline unsigned short from32to16(unsigned long x)
{
@ -115,34 +116,52 @@ unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum)
return result;
}
EXPORT_SYMBOL(csum_partial);
/*
* this routine is used for miscellaneous IP-like checksums, mainly
* in icmp.c
*/
unsigned short ip_compute_csum(const unsigned char * buff, int len)
{
return ~do_csum(buff,len);
return ~do_csum(buff, len);
}
EXPORT_SYMBOL(ip_compute_csum);
/*
* copy from fs while checksumming, otherwise like csum_partial
*/
unsigned int
csum_partial_copy_from_user(const char *src, char *dst, int len, int sum, int *csum_err)
csum_partial_copy_from_user(const char __user *src, char *dst,
int len, int sum, int *csum_err)
{
if (csum_err) *csum_err = 0;
memcpy(dst, src, len);
int rem;
if (csum_err)
*csum_err = 0;
rem = copy_from_user(dst, src, len);
if (rem != 0) {
if (csum_err)
*csum_err = -EFAULT;
memset(dst + len - rem, 0, rem);
len = rem;
}
return csum_partial(dst, len, sum);
}
EXPORT_SYMBOL(csum_partial_copy_from_user);
/*
* copy from ds while checksumming, otherwise like csum_partial
*/
unsigned int
csum_partial_copy(const char *src, char *dst, int len, int sum)
{
memcpy(dst, src, len);
return csum_partial(dst, len, sum);
}
EXPORT_SYMBOL(csum_partial_copy);

8
arch/frv/mb93090-mb00/pci-dma-nommu.c
View File

@ -83,6 +83,8 @@ void *dma_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_hand
return NULL;
}
EXPORT_SYMBOL(dma_alloc_coherent);
void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle)
{
struct dma_alloc_record *rec;
@ -102,6 +104,8 @@ void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_
BUG();
}
EXPORT_SYMBOL(dma_free_coherent);
/*
* Map a single buffer of the indicated size for DMA in streaming mode.
* The 32-bit bus address to use is returned.
@ -120,6 +124,8 @@ dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
return virt_to_bus(ptr);
}
EXPORT_SYMBOL(dma_map_single);
/*
* Map a set of buffers described by scatterlist in streaming
* mode for DMA. This is the scather-gather version of the
@ -150,3 +156,5 @@ int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
return nents;
}
EXPORT_SYMBOL(dma_map_sg);

10
arch/frv/mb93090-mb00/pci-dma.c
View File

@ -28,11 +28,15 @@ void *dma_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_hand
return ret;
}
EXPORT_SYMBOL(dma_alloc_coherent);
void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle)
{
consistent_free(vaddr);
}
EXPORT_SYMBOL(dma_free_coherent);
/*
* Map a single buffer of the indicated size for DMA in streaming mode.
* The 32-bit bus address to use is returned.
@ -51,6 +55,8 @@ dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
return virt_to_bus(ptr);
}
EXPORT_SYMBOL(dma_map_single);
/*
* Map a set of buffers described by scatterlist in streaming
* mode for DMA. This is the scather-gather version of the
@ -96,6 +102,8 @@ int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
return nents;
}
EXPORT_SYMBOL(dma_map_sg);
dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long offset,
size_t size, enum dma_data_direction direction)
{
@ -103,3 +111,5 @@ dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long off
flush_dcache_page(page);
return (dma_addr_t) page_to_phys(page) + offset;
}
EXPORT_SYMBOL(dma_map_page);

5
arch/frv/mm/cache-page.c
View File

@ -11,6 +11,7 @@
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/highmem.h>
#include <linux/module.h>
#include <asm/pgalloc.h>
/*****************************************************************************/
@ -38,6 +39,8 @@ void flush_dcache_page(struct page *page)
} /* end flush_dcache_page() */
EXPORT_SYMBOL(flush_dcache_page);
/*****************************************************************************/
/*
* ICI takes a virtual address and the page may not currently have one
@ -64,3 +67,5 @@ void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
}
} /* end flush_icache_user_range() */
EXPORT_SYMBOL(flush_icache_user_range);

8
arch/frv/mm/highmem.c
View File

@ -9,6 +9,7 @@
* 2 of the License, or (at your option) any later version.
*/
#include <linux/highmem.h>
#include <linux/module.h>
void *kmap(struct page *page)
{
@ -18,6 +19,8 @@ void *kmap(struct page *page)
return kmap_high(page);
}
EXPORT_SYMBOL(kmap);
void kunmap(struct page *page)
{
if (in_interrupt())
@ -27,7 +30,12 @@ void kunmap(struct page *page)
kunmap_high(page);
}
EXPORT_SYMBOL(kunmap);
struct page *kmap_atomic_to_page(void *ptr)
{
return virt_to_page(ptr);
}
EXPORT_SYMBOL(kmap_atomic_to_page);

3
lib/find_next_bit.c
View File

@ -10,6 +10,7 @@
*/
#include <linux/bitops.h>
#include <linux/module.h>
int find_next_bit(const unsigned long *addr, int size, int offset)
{
@ -53,3 +54,5 @@ int find_next_bit(const unsigned long *addr, int size, int offset)
return offset;
}
EXPORT_SYMBOL(find_next_bit);