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
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
#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;
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;
}
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)
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)
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)
{
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
--- /dev/null
+/*
+ * 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
+++ /dev/null
-#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
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
projects / xen.git / commitdiff