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bitkeeper revision 1.259.2.6 (3f0bee0cfkR2cO-f6uTZlAZDteGSDg)

Browse Source 
Merge scramble.cl.cam.ac.uk:/auto/groups/xeno/BK/xeno.bk
into scramble.cl.cam.ac.uk:/local/scratch/kaf24/xeno.time
This commit is contained in:
kaf24@scramble.cl.cam.ac.uk committed 2003-07-09 10:27:24 +00:00
2 parents 6bbb3d315b 46d2ba9518
commit cdd2f5b6e6
6 files changed
+319 -584
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.rootkeys
+1 -1
View File
@@ -504,6 +504,7 @@
3e5a4e66TyNNUEXkr5RxqvQhXK1MQA xenolinux-2.4.21-sparse/arch/xeno/mm/get_unmapped_area.c
3e5a4e668SE9rixq4ahho9rNhLUUFQ xenolinux-2.4.21-sparse/arch/xeno/mm/hypervisor.c
3e5a4e661gLzzff25pJooKIIWe7IWg xenolinux-2.4.21-sparse/arch/xeno/mm/init.c
3f0bed43UUdQichXAiVNrjV-y2Kzcg xenolinux-2.4.21-sparse/arch/xeno/mm/ioremap.c
3e5a4e66qRlSTcjafidMB6ulECADvg xenolinux-2.4.21-sparse/arch/xeno/vmlinux.lds
3ea53c6em6uzVHSiGqrbbAVofyRY_g xenolinux-2.4.21-sparse/drivers/block/genhd.c
3e5a4e66mrtlmV75L1tjKDg8RaM5gA xenolinux-2.4.21-sparse/drivers/block/ll_rw_blk.c
@@ -515,7 +516,6 @@
3e5a4e67w_DWgjIJ17Tlossu1LGujQ xenolinux-2.4.21-sparse/include/asm-xeno/highmem.h
3e5a4e67YtcyDLQsShhCfQwPSELfvA xenolinux-2.4.21-sparse/include/asm-xeno/hw_irq.h
3e5a4e677VBavzM1UZIEcH1B-RlXMA xenolinux-2.4.21-sparse/include/asm-xeno/hypervisor.h
3e5a4e67Ulv-Ll8Zp4j2GwMwQ8aAXQ xenolinux-2.4.21-sparse/include/asm-xeno/io.h
3e5a4e673p7PEOyHFm3nHkYX6HQYBg xenolinux-2.4.21-sparse/include/asm-xeno/irq.h
3ead095db_LRUXnxaqs0dA1DWhPoQQ xenolinux-2.4.21-sparse/include/asm-xeno/keyboard.h
3e5a4e67zoNch27qYhEBpr2k6SABOg xenolinux-2.4.21-sparse/include/asm-xeno/mmu.h
xenolinux-2.4.21-sparse/arch/xeno/drivers/dom0/dom0_memory.c
+13 -206
View File
@@ -20,114 +20,22 @@
#define MAP_DISCONT 1
extern struct list_head * find_direct(struct list_head *, unsigned long);
/*
* bd240: functions below perform direct mapping to the real physical pages
* needed for mapping various hypervisor specific structures needed in dom0
* userspace by various management applications such as domain builder etc.
*/
#define direct_set_pte(pteptr, pteval) queue_l1_entry_update(__pa(pteptr)|PGREQ_UNCHECKED_UPDATE, (pteval).pte_low)
#define direct_pte_clear(pteptr) queue_l1_entry_update(__pa(pteptr)|PGREQ_UNCHECKED_UPDATE, 0)
#define __direct_pte(x) ((pte_t) { (x) } )
#define __direct_mk_pte(page_nr,pgprot) __direct_pte(((page_nr) << PAGE_SHIFT) | pgprot_val(pgprot))
#define direct_mk_pte_phys(physpage, pgprot) __direct_mk_pte((physpage) >> PAGE_SHIFT, pgprot)
static inline void forget_pte(pte_t page)
{
if (!pte_none(page)) {
printk("forget_pte: old mapping existed!\n");
BUG();
}
}
static inline void direct_remappte_range(pte_t * pte, unsigned long address, unsigned long size,
unsigned long phys_addr, pgprot_t prot)
{
unsigned long end;
address &= ~PMD_MASK;
end = address + size;
if (end > PMD_SIZE)
end = PMD_SIZE;
do {
pte_t oldpage;
oldpage = ptep_get_and_clear(pte);
direct_set_pte(pte, direct_mk_pte_phys(phys_addr, prot));
forget_pte(oldpage);
address += PAGE_SIZE;
phys_addr += PAGE_SIZE;
pte++;
} while (address && (address < end));
}
static inline int direct_remappmd_range(struct mm_struct *mm, pmd_t * pmd, unsigned long address, unsigned long size,
unsigned long phys_addr, pgprot_t prot)
{
unsigned long end;
address &= ~PGDIR_MASK;
end = address + size;
if (end > PGDIR_SIZE)
end = PGDIR_SIZE;
phys_addr -= address;
do {
pte_t * pte = pte_alloc(mm, pmd, address);
if (!pte)
return -ENOMEM;
direct_remappte_range(pte, address, end - address, address + phys_addr, prot);
address = (address + PMD_SIZE) & PMD_MASK;
pmd++;
} while (address && (address < end));
return 0;
}
/* Note: this is only safe if the mm semaphore is held when called. */
int direct_remap_page_range(unsigned long from, unsigned long phys_addr, unsigned long size, pgprot_t prot)
{
int error = 0;
pgd_t * dir;
unsigned long beg = from;
unsigned long end = from + size;
struct mm_struct *mm = current->mm;
phys_addr -= from;
dir = pgd_offset(mm, from);
flush_cache_range(mm, beg, end);
if (from >= end)
BUG();
spin_lock(&mm->page_table_lock);
do {
pmd_t *pmd = pmd_alloc(mm, dir, from);
error = -ENOMEM;
if (!pmd)
break;
error = direct_remappmd_range(mm, pmd, from, end - from, phys_addr + from, prot);
if (error)
break;
from = (from + PGDIR_SIZE) & PGDIR_MASK;
dir++;
} while (from && (from < end));
spin_unlock(&mm->page_table_lock);
flush_tlb_range(mm, beg, end);
return error;
}
extern int direct_remap_area_pages(struct mm_struct *, unsigned long,
unsigned long, unsigned long, pgprot_t);
extern void direct_zap_page_range(struct mm_struct *, unsigned long,
unsigned long);
/*
* used for remapping discontiguous bits of domain's memory, pages to map are
* found from frame table beginning at the given first_pg index
*/
int direct_remap_disc_page_range(unsigned long from,
unsigned long first_pg, int tot_pages, pgprot_t prot)
unsigned long first_pg,
int tot_pages,
pgprot_t prot)
{
dom0_op_t dom0_op;
unsigned long *pfns = get_free_page(GFP_KERNEL);
unsigned long *pfns = (unsigned long *)get_free_page(GFP_KERNEL);
unsigned long start = from;
int pages, i;
@@ -145,7 +53,8 @@ int direct_remap_disc_page_range(unsigned long from,
for ( i = 0; i < pages; i++ )
{
if(direct_remap_page_range(start, pfns[i] << PAGE_SHIFT,
if(direct_remap_area_pages(current->mm,
start, pfns[i] << PAGE_SHIFT,
PAGE_SIZE, prot))
goto out;
start += PAGE_SIZE;
@@ -154,15 +63,10 @@ int direct_remap_disc_page_range(unsigned long from,
}
out:
free_page(pfns);
free_page((unsigned long)pfns);
return tot_pages;
}
/* below functions replace standard sys_mmap and sys_munmap which are absolutely useless
* for direct memory mapping. direct_zap* functions are minor ammendments to the
* original versions in mm/memory.c. the changes are to enable unmapping of real physical
* addresses.
*/
unsigned long direct_mmap(unsigned long phys_addr, unsigned long size,
pgprot_t prot, int flag, int tot_pages)
@@ -202,7 +106,8 @@ unsigned long direct_mmap(unsigned long phys_addr, unsigned long size,
ret = direct_remap_disc_page_range(addr, phys_addr >> PAGE_SHIFT,
tot_pages, prot);
} else {
ret = direct_remap_page_range(addr, phys_addr, size, prot);
ret = direct_remap_area_pages(current->mm,
addr, phys_addr, size, prot);
}
if(ret == 0)
@@ -212,104 +117,6 @@ unsigned long direct_mmap(unsigned long phys_addr, unsigned long size,
return ret;
}
/* most of the checks, refcnt updates, cache stuff have been thrown out as they are not
* needed
*/
static inline int direct_zap_pte_range(mmu_gather_t *tlb, pmd_t * pmd, unsigned long address,
unsigned long size)
{
unsigned long offset;
pte_t * ptep;
int freed = 0;
if (pmd_none(*pmd))
return 0;
if (pmd_bad(*pmd)) {
pmd_ERROR(*pmd);
pmd_clear(pmd);
return 0;
}
ptep = pte_offset(pmd, address);
offset = address & ~PMD_MASK;
if (offset + size > PMD_SIZE)
size = PMD_SIZE - offset;
size &= PAGE_MASK;
for (offset=0; offset < size; ptep++, offset += PAGE_SIZE) {
pte_t pte = *ptep;
if (pte_none(pte))
continue;
freed ++;
direct_pte_clear(ptep);
}
return freed;
}
static inline int direct_zap_pmd_range(mmu_gather_t *tlb, pgd_t * dir,
unsigned long address, unsigned long size)
{
pmd_t * pmd;
unsigned long end;
int freed;
if (pgd_none(*dir))
return 0;
if (pgd_bad(*dir)) {
pgd_ERROR(*dir);
pgd_clear(dir);
return 0;
}
pmd = pmd_offset(dir, address);
end = address + size;
if (end > ((address + PGDIR_SIZE) & PGDIR_MASK))
end = ((address + PGDIR_SIZE) & PGDIR_MASK);
freed = 0;
do {
freed += direct_zap_pte_range(tlb, pmd, address, end - address);
address = (address + PMD_SIZE) & PMD_MASK;
pmd++;
} while (address < end);
return freed;
}
/*
* remove user pages in a given range.
*/
void direct_zap_page_range(struct mm_struct *mm, unsigned long address, unsigned long size)
{
mmu_gather_t *tlb;
pgd_t * dir;
unsigned long start = address, end = address + size;
int freed = 0;
dir = pgd_offset(mm, address);
/*
* This is a long-lived spinlock. That's fine.
* There's no contention, because the page table
* lock only protects against kswapd anyway, and
* even if kswapd happened to be looking at this
* process we _want_ it to get stuck.
*/
if (address >= end)
BUG();
spin_lock(&mm->page_table_lock);
flush_cache_range(mm, address, end);
tlb = tlb_gather_mmu(mm);
do {
freed += direct_zap_pmd_range(tlb, dir, address, end - address);
address = (address + PGDIR_SIZE) & PGDIR_MASK;
dir++;
} while (address && (address < end));
/* this will flush any remaining tlb entries */
tlb_finish_mmu(tlb, start, end);
/* decrementing rss removed */
spin_unlock(&mm->page_table_lock);
}
int direct_unmap(struct mm_struct *mm, unsigned long addr, unsigned long size)
{
xenolinux-2.4.21-sparse/arch/xeno/mm/Makefile
+1 -1
View File
@@ -9,7 +9,7 @@
O_TARGET := mm.o
obj-y := init.o fault.o extable.o pageattr.o hypervisor.o get_unmapped_area.o
obj-y := init.o fault.o extable.o pageattr.o hypervisor.o get_unmapped_area.o ioremap.o
export-objs := pageattr.o
xenolinux-2.4.21-sparse/arch/xeno/mm/ioremap.c
+303
View File
@@ -0,0 +1,303 @@
/*
* arch/xeno/mm/ioremap.c
*
* Re-map IO memory to kernel address space so that we can access it.
*
* (C) Copyright 1995 1996 Linus Torvalds
*
* Modifications for Xenolinux (c) 2003 Keir Fraser
*/
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/mman.h>
#include <linux/vmalloc.h>
#include <asm/io.h>
#include <asm/pgalloc.h>
#include <asm/uaccess.h>
#include <asm/tlb.h>
#include <asm/mmu.h>
#define direct_set_pte(pteptr, pteval) \
queue_l1_entry_update(__pa(pteptr)|PGREQ_UNCHECKED_UPDATE, (pteval).pte_low)
#define direct_pte_clear(pteptr) \
queue_l1_entry_update(__pa(pteptr)|PGREQ_UNCHECKED_UPDATE, 0)
#define __direct_pte(x) ((pte_t) { (x) } )
#define __direct_mk_pte(page_nr,pgprot) \
__direct_pte(((page_nr) << PAGE_SHIFT) | pgprot_val(pgprot))
#define direct_mk_pte_phys(physpage, pgprot) \
__direct_mk_pte((physpage) >> PAGE_SHIFT, pgprot)
/******************* Mapping a page range directly ************************/
static inline void direct_remap_area_pte(pte_t *pte,
unsigned long address,
unsigned long size,
unsigned long machine_addr,
pgprot_t prot)
{
unsigned long end;
address &= ~PMD_MASK;
end = address + size;
if (end > PMD_SIZE)
end = PMD_SIZE;
if (address >= end)
BUG();
do {
if (!pte_none(*pte)) {
printk("direct_remap_area_pte: page already exists\n");
BUG();
}
direct_set_pte(pte, direct_mk_pte_phys(machine_addr, prot));
address += PAGE_SIZE;
machine_addr += PAGE_SIZE;
pte++;
} while (address && (address < end));
}
static inline int direct_remap_area_pmd(struct mm_struct *mm,
pmd_t *pmd,
unsigned long address,
unsigned long size,
unsigned long machine_addr,
pgprot_t prot)
{
unsigned long end;
address &= ~PGDIR_MASK;
end = address + size;
if (end > PGDIR_SIZE)
end = PGDIR_SIZE;
machine_addr -= address;
if (address >= end)
BUG();
do {
pte_t * pte = pte_alloc(mm, pmd, address);
if (!pte)
return -ENOMEM;
direct_remap_area_pte(pte, address, end - address,
address + machine_addr, prot);
address = (address + PMD_SIZE) & PMD_MASK;
pmd++;
} while (address && (address < end));
return 0;
}
int direct_remap_area_pages(struct mm_struct *mm,
unsigned long address,
unsigned long machine_addr,
unsigned long size,
pgprot_t prot)
{
int error = 0;
pgd_t * dir;
unsigned long end = address + size;
machine_addr -= address;
dir = pgd_offset(mm, address);
flush_cache_all();
if (address >= end)
BUG();
spin_lock(&mm->page_table_lock);
do {
pmd_t *pmd = pmd_alloc(mm, dir, address);
error = -ENOMEM;
if (!pmd)
break;
error = direct_remap_area_pmd(mm, pmd, address, end - address,
machine_addr + address, prot);
if (error)
break;
address = (address + PGDIR_SIZE) & PGDIR_MASK;
dir++;
} while (address && (address < end));
spin_unlock(&mm->page_table_lock);
flush_tlb_all();
return error;
}
/************************ Zapping a page range directly *******************/
static inline int direct_zap_pte_range(mmu_gather_t *tlb,
pmd_t * pmd,
unsigned long address,
unsigned long size)
{
unsigned long offset;
pte_t * ptep;
int freed = 0;
if (pmd_none(*pmd))
return 0;
if (pmd_bad(*pmd)) {
pmd_ERROR(*pmd);
pmd_clear(pmd);
return 0;
}
ptep = pte_offset(pmd, address);
offset = address & ~PMD_MASK;
if (offset + size > PMD_SIZE)
size = PMD_SIZE - offset;
size &= PAGE_MASK;
for (offset=0; offset < size; ptep++, offset += PAGE_SIZE) {
pte_t pte = *ptep;
if (pte_none(pte))
continue;
freed++;
direct_pte_clear(ptep);
}
return freed;
}
static inline int direct_zap_pmd_range(mmu_gather_t *tlb,
pgd_t * dir,
unsigned long address,
unsigned long size)
{
pmd_t * pmd;
unsigned long end;
int freed;
if (pgd_none(*dir))
return 0;
if (pgd_bad(*dir)) {
pgd_ERROR(*dir);
pgd_clear(dir);
return 0;
}
pmd = pmd_offset(dir, address);
end = address + size;
if (end > ((address + PGDIR_SIZE) & PGDIR_MASK))
end = ((address + PGDIR_SIZE) & PGDIR_MASK);
freed = 0;
do {
freed += direct_zap_pte_range(tlb, pmd, address, end - address);
address = (address + PMD_SIZE) & PMD_MASK;
pmd++;
} while (address < end);
return freed;
}
void direct_zap_page_range(struct mm_struct *mm,
unsigned long address,
unsigned long size)
{
mmu_gather_t *tlb;
pgd_t * dir;
unsigned long start = address, end = address + size;
int freed = 0;
dir = pgd_offset(mm, address);
if (address >= end)
BUG();
spin_lock(&mm->page_table_lock);
flush_cache_range(mm, address, end);
tlb = tlb_gather_mmu(mm);
do {
freed += direct_zap_pmd_range(tlb, dir, address, end - address);
address = (address + PGDIR_SIZE) & PGDIR_MASK;
dir++;
} while (address && (address < end));
/* this will flush any remaining tlb entries */
tlb_finish_mmu(tlb, start, end);
/* decrementing rss removed */
spin_unlock(&mm->page_table_lock);
}
/****************** Generic public functions ****************************/
/*
* Remap an arbitrary machine address space into the kernel virtual
* address space. Needed when a privileged instance of Xenolinux wants
* to access space outside its world directly.
*
* NOTE! We need to allow non-page-aligned mappings too: we will obviously
* have to convert them into an offset in a page-aligned mapping, but the
* caller shouldn't need to know that small detail.
*/
void * __ioremap(unsigned long machine_addr,
unsigned long size,
unsigned long flags)
{
void * addr;
struct vm_struct * area;
unsigned long offset, last_addr;
pgprot_t prot;
/* Only privileged Xenolinux can make unchecked pagetable updates. */
if ( !(start_info.flags & SIF_PRIVILEGED) )
return NULL;
/* Don't allow wraparound or zero size */
last_addr = machine_addr + size - 1;
if (!size || last_addr < machine_addr)
return NULL;
/* Mappings have to be page-aligned */
offset = machine_addr & ~PAGE_MASK;
machine_addr &= PAGE_MASK;
size = PAGE_ALIGN(last_addr) - machine_addr;
/* Ok, go for it */
area = get_vm_area(size, VM_IOREMAP);
if (!area)
return NULL;
addr = area->addr;
prot = __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED |
flags);
if (direct_remap_area_pages(&init_mm, VMALLOC_VMADDR(addr),
machine_addr, size, prot)) {
vfree(addr);
return NULL;
}
return (void *) (offset + (char *)addr);
}
/*
* 'vfree' is basically inlined here. This is because we use a different
* function to zap the associated page range.
*/
void iounmap(void *addr)
{
struct vm_struct **p, *tmp;
addr = (void *)((unsigned long)addr & PAGE_MASK);
if (addr == NULL)
return;
write_lock(&vmlist_lock);
for (p = &vmlist ; (tmp = *p) ; p = &tmp->next) {
if (tmp->addr == addr) {
*p = tmp->next;
direct_zap_page_range(&init_mm,
VMALLOC_VMADDR(tmp->addr),
tmp->size);
write_unlock(&vmlist_lock);
kfree(tmp);
return;
}
}
write_unlock(&vmlist_lock);
printk(KERN_ERR "Trying to iounmap() nonexistent vm area (%p)\n", addr);
}
#if 0 /* We don't support these functions. They shouldn't be required. */
void __init *bt_ioremap(unsigned long machine_addr, unsigned long size) {}
void __init bt_iounmap(void *addr, unsigned long size) {}
#endif
xenolinux-2.4.21-sparse/include/asm-xeno/io.h
-376
View File
@@ -1,376 +0,0 @@
#ifndef _ASM_IO_H
#define _ASM_IO_H
#include <linux/config.h>
#include <asm/hypervisor.h>
/*
* This file contains the definitions for the x86 IO instructions
* inb/inw/inl/outb/outw/outl and the "string versions" of the same
* (insb/insw/insl/outsb/outsw/outsl). You can also use "pausing"
* versions of the single-IO instructions (inb_p/inw_p/..).
*
* This file is not meant to be obfuscating: it's just complicated
* to (a) handle it all in a way that makes gcc able to optimize it
* as well as possible and (b) trying to avoid writing the same thing
* over and over again with slight variations and possibly making a
* mistake somewhere.
*/
/*
* Thanks to James van Artsdalen for a better timing-fix than
* the two short jumps: using outb's to a nonexistent port seems
* to guarantee better timings even on fast machines.
*
* On the other hand, I'd like to be sure of a non-existent port:
* I feel a bit unsafe about using 0x80 (should be safe, though)
*
* Linus
*/
/*
* Bit simplified and optimized by Jan Hubicka
* Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999.
*
* isa_memset_io, isa_memcpy_fromio, isa_memcpy_toio added,
* isa_read[wl] and isa_write[wl] fixed
* - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
*/
#define IO_SPACE_LIMIT 0xffff
#define XQUAD_PORTIO_BASE 0xfe400000
#define XQUAD_PORTIO_QUAD 0x40000 /* 256k per quad. */
#define XQUAD_PORTIO_LEN 0x80000 /* Only remapping first 2 quads */
#ifdef __KERNEL__
#include <linux/vmalloc.h>
/*
* Temporary debugging check to catch old code using
* unmapped ISA addresses. Will be removed in 2.4.
*/
#if CONFIG_DEBUG_IOVIRT
extern void *__io_virt_debug(unsigned long x, const char *file, int line);
extern unsigned long __io_phys_debug(unsigned long x, const char *file, int line);
#define __io_virt(x) __io_virt_debug((unsigned long)(x), __FILE__, __LINE__)
//#define __io_phys(x) __io_phys_debug((unsigned long)(x), __FILE__, __LINE__)
#else
#define __io_virt(x) ((void *)(x))
//#define __io_phys(x) __pa(x)
#endif
/**
* virt_to_phys - map virtual addresses to physical
* @address: address to remap
*
* The returned physical address is the physical (CPU) mapping for
* the memory address given. It is only valid to use this function on
* addresses directly mapped or allocated via kmalloc.
*
* This function does not give bus mappings for DMA transfers. In
* almost all conceivable cases a device driver should not be using
* this function
*/
static inline unsigned long virt_to_phys(volatile void * address)
{
return __pa(address);
}
/**
* phys_to_virt - map physical address to virtual
* @address: address to remap
*
* The returned virtual address is a current CPU mapping for
* the memory address given. It is only valid to use this function on
* addresses that have a kernel mapping
*
* This function does not handle bus mappings for DMA transfers. In
* almost all conceivable cases a device driver should not be using
* this function
*/
static inline void * phys_to_virt(unsigned long address)
{
return __va(address);
}
/*
* Change "struct page" to physical address.
*/
#ifdef CONFIG_HIGHMEM64G
#define page_to_phys(page) ((u64)(page - mem_map) << PAGE_SHIFT)
#else
#define page_to_phys(page) ((page - mem_map) << PAGE_SHIFT)
#endif
/*
* IO bus memory addresses are also 1:1 with the physical address
*/
#define virt_to_bus virt_to_phys
#define bus_to_virt phys_to_virt
#define page_to_bus page_to_phys
/*
* readX/writeX() are used to access memory mapped devices. On some
* architectures the memory mapped IO stuff needs to be accessed
* differently. On the x86 architecture, we just read/write the
* memory location directly.
*/
#define readb(addr) (*(volatile unsigned char *) __io_virt(addr))
#define readw(addr) (*(volatile unsigned short *) __io_virt(addr))
#define readl(addr) (*(volatile unsigned int *) __io_virt(addr))
#define __raw_readb readb
#define __raw_readw readw
#define __raw_readl readl
#define writeb(b,addr) (*(volatile unsigned char *) __io_virt(addr) = (b))
#define writew(b,addr) (*(volatile unsigned short *) __io_virt(addr) = (b))
#define writel(b,addr) (*(volatile unsigned int *) __io_virt(addr) = (b))
#define __raw_writeb writeb
#define __raw_writew writew
#define __raw_writel writel
#define memset_io(a,b,c) __memset(__io_virt(a),(b),(c))
#define memcpy_fromio(a,b,c) __memcpy((a),__io_virt(b),(c))
#define memcpy_toio(a,b,c) __memcpy(__io_virt(a),(b),(c))
/*
* ISA space is 'always mapped' on a typical x86 system, no need to
* explicitly ioremap() it. The fact that the ISA IO space is mapped
* to PAGE_OFFSET is pure coincidence - it does not mean ISA values
* are physical addresses. The following constant pointer can be
* used as the IO-area pointer (it can be iounmapped as well, so the
* analogy with PCI is quite large):
*/
#define __ISA_IO_base ((char *)(PAGE_OFFSET))
#define isa_readb(a) readb(__ISA_IO_base + (a))
#define isa_readw(a) readw(__ISA_IO_base + (a))
#define isa_readl(a) readl(__ISA_IO_base + (a))
#define isa_writeb(b,a) writeb(b,__ISA_IO_base + (a))
#define isa_writew(w,a) writew(w,__ISA_IO_base + (a))
#define isa_writel(l,a) writel(l,__ISA_IO_base + (a))
#define isa_memset_io(a,b,c) memset_io(__ISA_IO_base + (a),(b),(c))
#define isa_memcpy_fromio(a,b,c) memcpy_fromio((a),__ISA_IO_base + (b),(c))
#define isa_memcpy_toio(a,b,c) memcpy_toio(__ISA_IO_base + (a),(b),(c))
/*
* Again, i386 does not require mem IO specific function.
*/
#define eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),__io_virt(b),(c),(d))
#define isa_eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),__io_virt(__ISA_IO_base + (b)),(c),(d))
/**
* check_signature - find BIOS signatures
* @io_addr: mmio address to check
* @signature: signature block
* @length: length of signature
*
* Perform a signature comparison with the mmio address io_addr. This
* address should have been obtained by ioremap.
* Returns 1 on a match.
*/
static inline int check_signature(unsigned long io_addr,
const unsigned char *signature, int length)
{
int retval = 0;
do {
if (readb(io_addr) != *signature)
goto out;
io_addr++;
signature++;
length--;
} while (length);
retval = 1;
out:
return retval;
}
/**
* isa_check_signature - find BIOS signatures
* @io_addr: mmio address to check
* @signature: signature block
* @length: length of signature
*
* Perform a signature comparison with the ISA mmio address io_addr.
* Returns 1 on a match.
*
* This function is deprecated. New drivers should use ioremap and
* check_signature.
*/
static inline int isa_check_signature(unsigned long io_addr,
const unsigned char *signature, int length)
{
int retval = 0;
do {
if (isa_readb(io_addr) != *signature)
goto out;
io_addr++;
signature++;
length--;
} while (length);
retval = 1;
out:
return retval;
}
/*
* Cache management
*
* This needed for two cases
* 1. Out of order aware processors
* 2. Accidentally out of order processors (PPro errata #51)
*/
#if defined(CONFIG_X86_OOSTORE) || defined(CONFIG_X86_PPRO_FENCE)
static inline void flush_write_buffers(void)
{
__asm__ __volatile__ ("lock; addl $0,0(%%esp)": : :"memory");
}
#define dma_cache_inv(_start,_size) flush_write_buffers()
#define dma_cache_wback(_start,_size) flush_write_buffers()
#define dma_cache_wback_inv(_start,_size) flush_write_buffers()
#else
/* Nothing to do */
#define dma_cache_inv(_start,_size) do { } while (0)
#define dma_cache_wback(_start,_size) do { } while (0)
#define dma_cache_wback_inv(_start,_size) do { } while (0)
#define flush_write_buffers()
#endif
#endif /* __KERNEL__ */
#ifdef SLOW_IO_BY_JUMPING
#define __SLOW_DOWN_IO "\njmp 1f\n1:\tjmp 1f\n1:"
#else
#define __SLOW_DOWN_IO "\noutb %%al,$0x80"
#endif
#ifdef REALLY_SLOW_IO
#define __FULL_SLOW_DOWN_IO __SLOW_DOWN_IO __SLOW_DOWN_IO __SLOW_DOWN_IO __SLOW_DOWN_IO
#else
#define __FULL_SLOW_DOWN_IO __SLOW_DOWN_IO
#endif
#ifdef CONFIG_MULTIQUAD
extern void *xquad_portio; /* Where the IO area was mapped */
#endif /* CONFIG_MULTIQUAD */
/*
* Talk about misusing macros..
*/
#define __OUT1(s,x) \
static inline void out##s(unsigned x value, unsigned short port) {
#define __OUT2(s,s1,s2) \
__asm__ __volatile__ ("out" #s " %" s1 "0,%" s2 "1"
#if defined (CONFIG_MULTIQUAD) && !defined(STANDALONE)
#define __OUTQ(s,ss,x) /* Do the equivalent of the portio op on quads */ \
static inline void out##ss(unsigned x value, unsigned short port) { \
if (xquad_portio) \
write##s(value, (unsigned long) xquad_portio + port); \
else /* We're still in early boot, running on quad 0 */ \
out##ss##_local(value, port); \
} \
static inline void out##ss##_quad(unsigned x value, unsigned short port, int quad) { \
if (xquad_portio) \
write##s(value, (unsigned long) xquad_portio + (XQUAD_PORTIO_QUAD*quad)\
+ port); \
}
#define __INQ(s,ss) /* Do the equivalent of the portio op on quads */ \
static inline RETURN_TYPE in##ss(unsigned short port) { \
if (xquad_portio) \
return read##s((unsigned long) xquad_portio + port); \
else /* We're still in early boot, running on quad 0 */ \
return in##ss##_local(port); \
} \
static inline RETURN_TYPE in##ss##_quad(unsigned short port, int quad) { \
if (xquad_portio) \
return read##s((unsigned long) xquad_portio + (XQUAD_PORTIO_QUAD*quad)\
+ port); \
else\
return 0;\
}
#endif /* CONFIG_MULTIQUAD && !STANDALONE */
#if !defined(CONFIG_MULTIQUAD) || defined(STANDALONE)
#define __OUT(s,s1,x) \
__OUT1(s,x) __OUT2(s,s1,"w") : : "a" (value), "Nd" (port)); } \
__OUT1(s##_p,x) __OUT2(s,s1,"w") __FULL_SLOW_DOWN_IO : : "a" (value), "Nd" (port));}
#else
/* Make the default portio routines operate on quad 0 */
#define __OUT(s,s1,x) \
__OUT1(s##_local,x) __OUT2(s,s1,"w") : : "a" (value), "Nd" (port)); } \
__OUT1(s##_p_local,x) __OUT2(s,s1,"w") __FULL_SLOW_DOWN_IO : : "a" (value), "Nd" (port));} \
__OUTQ(s,s,x) \
__OUTQ(s,s##_p,x)
#endif /* !CONFIG_MULTIQUAD || STANDALONE */
#define __IN1(s) \
static inline RETURN_TYPE in##s(unsigned short port) { RETURN_TYPE _v;
#define __IN2(s,s1,s2) \
__asm__ __volatile__ ("in" #s " %" s2 "1,%" s1 "0"
#if !defined(CONFIG_MULTIQUAD) || defined(STANDALONE)
#define __IN(s,s1,i...) \
__IN1(s) __IN2(s,s1,"w") : "=a" (_v) : "Nd" (port) ,##i ); return _v; } \
__IN1(s##_p) __IN2(s,s1,"w") __FULL_SLOW_DOWN_IO : "=a" (_v) : "Nd" (port) ,##i ); return _v; }
#else
/* Make the default portio routines operate on quad 0 */
#define __IN(s,s1,i...) \
__IN1(s##_local) __IN2(s,s1,"w") : "=a" (_v) : "Nd" (port) ,##i ); return _v; } \
__IN1(s##_p_local) __IN2(s,s1,"w") __FULL_SLOW_DOWN_IO : "=a" (_v) : "Nd" (port) ,##i ); return _v; } \
__INQ(s,s) \
__INQ(s,s##_p)
#endif /* !CONFIG_MULTIQUAD || STANDALONE */
#define __INS(s) \
static inline void ins##s(unsigned short port, void * addr, unsigned long count) \
{ __asm__ __volatile__ ("rep ; ins" #s \
: "=D" (addr), "=c" (count) : "d" (port),"0" (addr),"1" (count)); }
#define __OUTS(s) \
static inline void outs##s(unsigned short port, const void * addr, unsigned long count) \
{ __asm__ __volatile__ ("rep ; outs" #s \
: "=S" (addr), "=c" (count) : "d" (port),"0" (addr),"1" (count)); }
#define RETURN_TYPE unsigned char
__IN(b,"")
#undef RETURN_TYPE
#define RETURN_TYPE unsigned short
__IN(w,"")
#undef RETURN_TYPE
#define RETURN_TYPE unsigned int
__IN(l,"")
#undef RETURN_TYPE
__OUT(b,"b",char)
__OUT(w,"w",short)
__OUT(l,,int)
__INS(b)
__INS(w)
__INS(l)
__OUTS(b)
__OUTS(w)
__OUTS(l)
#endif
xenolinux-2.4.21-sparse/mkbuildtree
+1
View File
@@ -111,6 +111,7 @@ ln -sf ../asm-i386/hdreg.h
ln -sf ../asm-i386/i387.h
ln -sf ../asm-i386/ide.h
ln -sf ../asm-i386/init.h
ln -sf ../asm-i386/io.h
ln -sf ../asm-i386/io_apic.h
ln -sf ../asm-i386/ioctl.h
ln -sf ../asm-i386/ioctls.h
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