Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/asm-sparc64/pgtable.h b/include/asm-sparc64/pgtable.h
new file mode 100644
index 0000000..ca04ac1
--- /dev/null
+++ b/include/asm-sparc64/pgtable.h
@@ -0,0 +1,464 @@
+/* $Id: pgtable.h,v 1.156 2002/02/09 19:49:31 davem Exp $
+ * pgtable.h: SpitFire page table operations.
+ *
+ * Copyright 1996,1997 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#ifndef _SPARC64_PGTABLE_H
+#define _SPARC64_PGTABLE_H
+
+/* This file contains the functions and defines necessary to modify and use
+ * the SpitFire page tables.
+ */
+
+#include <asm-generic/pgtable-nopud.h>
+
+#include <linux/config.h>
+#include <linux/compiler.h>
+#include <asm/types.h>
+#include <asm/spitfire.h>
+#include <asm/asi.h>
+#include <asm/system.h>
+#include <asm/page.h>
+#include <asm/processor.h>
+#include <asm/const.h>
+
+/* The kernel image occupies 0x4000000 to 0x1000000 (4MB --> 16MB).
+ * The page copy blockops use 0x1000000 to 0x18000000 (16MB --> 24MB).
+ * The PROM resides in an area spanning 0xf0000000 to 0x100000000.
+ * The vmalloc area spans 0x140000000 to 0x200000000.
+ * There is a single static kernel PMD which maps from 0x0 to address
+ * 0x400000000.
+ */
+#define TLBTEMP_BASE _AC(0x0000000001000000,UL)
+#define MODULES_VADDR _AC(0x0000000002000000,UL)
+#define MODULES_LEN _AC(0x000000007e000000,UL)
+#define MODULES_END _AC(0x0000000080000000,UL)
+#define VMALLOC_START _AC(0x0000000140000000,UL)
+#define VMALLOC_END _AC(0x0000000200000000,UL)
+#define LOW_OBP_ADDRESS _AC(0x00000000f0000000,UL)
+#define HI_OBP_ADDRESS _AC(0x0000000100000000,UL)
+
+/* XXX All of this needs to be rethought so we can take advantage
+ * XXX cheetah's full 64-bit virtual address space, ie. no more hole
+ * XXX in the middle like on spitfire. -DaveM
+ */
+/*
+ * Given a virtual address, the lowest PAGE_SHIFT bits determine offset
+ * into the page; the next higher PAGE_SHIFT-3 bits determine the pte#
+ * in the proper pagetable (the -3 is from the 8 byte ptes, and each page
+ * table is a single page long). The next higher PMD_BITS determine pmd#
+ * in the proper pmdtable (where we must have PMD_BITS <= (PAGE_SHIFT-2)
+ * since the pmd entries are 4 bytes, and each pmd page is a single page
+ * long). Finally, the higher few bits determine pgde#.
+ */
+
+/* PMD_SHIFT determines the size of the area a second-level page
+ * table can map
+ */
+#define PMD_SHIFT (PAGE_SHIFT + (PAGE_SHIFT-3))
+#define PMD_SIZE (1UL << PMD_SHIFT)
+#define PMD_MASK (~(PMD_SIZE-1))
+#define PMD_BITS (PAGE_SHIFT - 2)
+
+/* PGDIR_SHIFT determines what a third-level page table entry can map */
+#define PGDIR_SHIFT (PAGE_SHIFT + (PAGE_SHIFT-3) + PMD_BITS)
+#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
+#define PGDIR_MASK (~(PGDIR_SIZE-1))
+#define PGDIR_BITS (PAGE_SHIFT - 2)
+
+#ifndef __ASSEMBLY__
+
+#include <linux/sched.h>
+
+/* Entries per page directory level. */
+#define PTRS_PER_PTE (1UL << (PAGE_SHIFT-3))
+#define PTRS_PER_PMD (1UL << PMD_BITS)
+#define PTRS_PER_PGD (1UL << PGDIR_BITS)
+
+/* Kernel has a separate 44bit address space. */
+#define FIRST_USER_PGD_NR 0
+
+#define pte_ERROR(e) __builtin_trap()
+#define pmd_ERROR(e) __builtin_trap()
+#define pgd_ERROR(e) __builtin_trap()
+
+#endif /* !(__ASSEMBLY__) */
+
+/* Spitfire/Cheetah TTE bits. */
+#define _PAGE_VALID _AC(0x8000000000000000,UL) /* Valid TTE */
+#define _PAGE_R _AC(0x8000000000000000,UL) /* Keep ref bit up to date*/
+#define _PAGE_SZ4MB _AC(0x6000000000000000,UL) /* 4MB Page */
+#define _PAGE_SZ512K _AC(0x4000000000000000,UL) /* 512K Page */
+#define _PAGE_SZ64K _AC(0x2000000000000000,UL) /* 64K Page */
+#define _PAGE_SZ8K _AC(0x0000000000000000,UL) /* 8K Page */
+#define _PAGE_NFO _AC(0x1000000000000000,UL) /* No Fault Only */
+#define _PAGE_IE _AC(0x0800000000000000,UL) /* Invert Endianness */
+#define _PAGE_SOFT2 _AC(0x07FC000000000000,UL) /* Software bits, set 2 */
+#define _PAGE_RES1 _AC(0x0003000000000000,UL) /* Reserved */
+#define _PAGE_SN _AC(0x0000800000000000,UL) /* (Cheetah) Snoop */
+#define _PAGE_RES2 _AC(0x0000780000000000,UL) /* Reserved */
+#define _PAGE_PADDR_SF _AC(0x000001FFFFFFE000,UL) /* (Spitfire) paddr[40:13]*/
+#define _PAGE_PADDR _AC(0x000007FFFFFFE000,UL) /* (Cheetah) paddr[42:13] */
+#define _PAGE_SOFT _AC(0x0000000000001F80,UL) /* Software bits */
+#define _PAGE_L _AC(0x0000000000000040,UL) /* Locked TTE */
+#define _PAGE_CP _AC(0x0000000000000020,UL) /* Cacheable in P-Cache */
+#define _PAGE_CV _AC(0x0000000000000010,UL) /* Cacheable in V-Cache */
+#define _PAGE_E _AC(0x0000000000000008,UL) /* side-Effect */
+#define _PAGE_P _AC(0x0000000000000004,UL) /* Privileged Page */
+#define _PAGE_W _AC(0x0000000000000002,UL) /* Writable */
+#define _PAGE_G _AC(0x0000000000000001,UL) /* Global */
+
+/* Here are the SpitFire software bits we use in the TTE's.
+ *
+ * WARNING: If you are going to try and start using some
+ * of the soft2 bits, you will need to make
+ * modifications to the swap entry implementation.
+ * For example, one thing that could happen is that
+ * swp_entry_to_pte() would BUG_ON() if you tried
+ * to use one of the soft2 bits for _PAGE_FILE.
+ *
+ * Like other architectures, I have aliased _PAGE_FILE with
+ * _PAGE_MODIFIED. This works because _PAGE_FILE is never
+ * interpreted that way unless _PAGE_PRESENT is clear.
+ */
+#define _PAGE_EXEC _AC(0x0000000000001000,UL) /* Executable SW bit */
+#define _PAGE_MODIFIED _AC(0x0000000000000800,UL) /* Modified (dirty) */
+#define _PAGE_FILE _AC(0x0000000000000800,UL) /* Pagecache page */
+#define _PAGE_ACCESSED _AC(0x0000000000000400,UL) /* Accessed (ref'd) */
+#define _PAGE_READ _AC(0x0000000000000200,UL) /* Readable SW Bit */
+#define _PAGE_WRITE _AC(0x0000000000000100,UL) /* Writable SW Bit */
+#define _PAGE_PRESENT _AC(0x0000000000000080,UL) /* Present */
+
+#if PAGE_SHIFT == 13
+#define _PAGE_SZBITS _PAGE_SZ8K
+#elif PAGE_SHIFT == 16
+#define _PAGE_SZBITS _PAGE_SZ64K
+#elif PAGE_SHIFT == 19
+#define _PAGE_SZBITS _PAGE_SZ512K
+#elif PAGE_SHIFT == 22
+#define _PAGE_SZBITS _PAGE_SZ4MB
+#else
+#error Wrong PAGE_SHIFT specified
+#endif
+
+#if defined(CONFIG_HUGETLB_PAGE_SIZE_4MB)
+#define _PAGE_SZHUGE _PAGE_SZ4MB
+#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K)
+#define _PAGE_SZHUGE _PAGE_SZ512K
+#elif defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
+#define _PAGE_SZHUGE _PAGE_SZ64K
+#endif
+
+#define _PAGE_CACHE (_PAGE_CP | _PAGE_CV)
+
+#define __DIRTY_BITS (_PAGE_MODIFIED | _PAGE_WRITE | _PAGE_W)
+#define __ACCESS_BITS (_PAGE_ACCESSED | _PAGE_READ | _PAGE_R)
+#define __PRIV_BITS _PAGE_P
+
+#define PAGE_NONE __pgprot (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_CACHE)
+
+/* Don't set the TTE _PAGE_W bit here, else the dirty bit never gets set. */
+#define PAGE_SHARED __pgprot (_PAGE_PRESENT | _PAGE_VALID | _PAGE_CACHE | \
+ __ACCESS_BITS | _PAGE_WRITE | _PAGE_EXEC)
+
+#define PAGE_COPY __pgprot (_PAGE_PRESENT | _PAGE_VALID | _PAGE_CACHE | \
+ __ACCESS_BITS | _PAGE_EXEC)
+
+#define PAGE_READONLY __pgprot (_PAGE_PRESENT | _PAGE_VALID | _PAGE_CACHE | \
+ __ACCESS_BITS | _PAGE_EXEC)
+
+#define PAGE_KERNEL __pgprot (_PAGE_PRESENT | _PAGE_VALID | _PAGE_CACHE | \
+ __PRIV_BITS | \
+ __ACCESS_BITS | __DIRTY_BITS | _PAGE_EXEC)
+
+#define PAGE_SHARED_NOEXEC __pgprot (_PAGE_PRESENT | _PAGE_VALID | \
+ _PAGE_CACHE | \
+ __ACCESS_BITS | _PAGE_WRITE)
+
+#define PAGE_COPY_NOEXEC __pgprot (_PAGE_PRESENT | _PAGE_VALID | \
+ _PAGE_CACHE | __ACCESS_BITS)
+
+#define PAGE_READONLY_NOEXEC __pgprot (_PAGE_PRESENT | _PAGE_VALID | \
+ _PAGE_CACHE | __ACCESS_BITS)
+
+#define _PFN_MASK _PAGE_PADDR
+
+#define pg_iobits (_PAGE_VALID | _PAGE_PRESENT | __DIRTY_BITS | \
+ __ACCESS_BITS | _PAGE_E)
+
+#define __P000 PAGE_NONE
+#define __P001 PAGE_READONLY_NOEXEC
+#define __P010 PAGE_COPY_NOEXEC
+#define __P011 PAGE_COPY_NOEXEC
+#define __P100 PAGE_READONLY
+#define __P101 PAGE_READONLY
+#define __P110 PAGE_COPY
+#define __P111 PAGE_COPY
+
+#define __S000 PAGE_NONE
+#define __S001 PAGE_READONLY_NOEXEC
+#define __S010 PAGE_SHARED_NOEXEC
+#define __S011 PAGE_SHARED_NOEXEC
+#define __S100 PAGE_READONLY
+#define __S101 PAGE_READONLY
+#define __S110 PAGE_SHARED
+#define __S111 PAGE_SHARED
+
+#ifndef __ASSEMBLY__
+
+extern unsigned long phys_base;
+extern unsigned long pfn_base;
+
+extern struct page *mem_map_zero;
+#define ZERO_PAGE(vaddr) (mem_map_zero)
+
+/* PFNs are real physical page numbers. However, mem_map only begins to record
+ * per-page information starting at pfn_base. This is to handle systems where
+ * the first physical page in the machine is at some huge physical address,
+ * such as 4GB. This is common on a partitioned E10000, for example.
+ */
+
+#define pfn_pte(pfn, prot) \
+ __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot) | _PAGE_SZBITS)
+#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
+
+#define pte_pfn(x) ((pte_val(x) & _PAGE_PADDR)>>PAGE_SHIFT)
+#define pte_page(x) pfn_to_page(pte_pfn(x))
+
+#define page_pte_prot(page, prot) mk_pte(page, prot)
+#define page_pte(page) page_pte_prot(page, __pgprot(0))
+
+static inline pte_t pte_modify(pte_t orig_pte, pgprot_t new_prot)
+{
+ pte_t __pte;
+ const unsigned long preserve_mask = (_PFN_MASK |
+ _PAGE_MODIFIED | _PAGE_ACCESSED |
+ _PAGE_CACHE | _PAGE_E |
+ _PAGE_PRESENT | _PAGE_SZBITS);
+
+ pte_val(__pte) = (pte_val(orig_pte) & preserve_mask) |
+ (pgprot_val(new_prot) & ~preserve_mask);
+
+ return __pte;
+}
+#define pmd_set(pmdp, ptep) \
+ (pmd_val(*(pmdp)) = (__pa((unsigned long) (ptep)) >> 11UL))
+#define pud_set(pudp, pmdp) \
+ (pud_val(*(pudp)) = (__pa((unsigned long) (pmdp)) >> 11UL))
+#define __pmd_page(pmd) \
+ ((unsigned long) __va((((unsigned long)pmd_val(pmd))<<11UL)))
+#define pmd_page(pmd) virt_to_page((void *)__pmd_page(pmd))
+#define pud_page(pud) \
+ ((unsigned long) __va((((unsigned long)pud_val(pud))<<11UL)))
+#define pte_none(pte) (!pte_val(pte))
+#define pte_present(pte) (pte_val(pte) & _PAGE_PRESENT)
+#define pmd_none(pmd) (!pmd_val(pmd))
+#define pmd_bad(pmd) (0)
+#define pmd_present(pmd) (pmd_val(pmd) != 0U)
+#define pmd_clear(pmdp) (pmd_val(*(pmdp)) = 0U)
+#define pud_none(pud) (!pud_val(pud))
+#define pud_bad(pud) (0)
+#define pud_present(pud) (pud_val(pud) != 0U)
+#define pud_clear(pudp) (pud_val(*(pudp)) = 0U)
+
+/* The following only work if pte_present() is true.
+ * Undefined behaviour if not..
+ */
+#define pte_read(pte) (pte_val(pte) & _PAGE_READ)
+#define pte_exec(pte) (pte_val(pte) & _PAGE_EXEC)
+#define pte_write(pte) (pte_val(pte) & _PAGE_WRITE)
+#define pte_dirty(pte) (pte_val(pte) & _PAGE_MODIFIED)
+#define pte_young(pte) (pte_val(pte) & _PAGE_ACCESSED)
+#define pte_wrprotect(pte) (__pte(pte_val(pte) & ~(_PAGE_WRITE|_PAGE_W)))
+#define pte_rdprotect(pte) \
+ (__pte(((pte_val(pte)<<1UL)>>1UL) & ~_PAGE_READ))
+#define pte_mkclean(pte) \
+ (__pte(pte_val(pte) & ~(_PAGE_MODIFIED|_PAGE_W)))
+#define pte_mkold(pte) \
+ (__pte(((pte_val(pte)<<1UL)>>1UL) & ~_PAGE_ACCESSED))
+
+/* Permanent address of a page. */
+#define __page_address(page) page_address(page)
+
+/* Be very careful when you change these three, they are delicate. */
+#define pte_mkyoung(pte) (__pte(pte_val(pte) | _PAGE_ACCESSED | _PAGE_R))
+#define pte_mkwrite(pte) (__pte(pte_val(pte) | _PAGE_WRITE))
+#define pte_mkdirty(pte) (__pte(pte_val(pte) | _PAGE_MODIFIED | _PAGE_W))
+
+/* to find an entry in a page-table-directory. */
+#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
+#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
+
+/* to find an entry in a kernel page-table-directory */
+#define pgd_offset_k(address) pgd_offset(&init_mm, address)
+
+/* extract the pgd cache used for optimizing the tlb miss
+ * slow path when executing 32-bit compat processes
+ */
+#define get_pgd_cache(pgd) ((unsigned long) pgd_val(*pgd) << 11)
+
+/* Find an entry in the second-level page table.. */
+#define pmd_offset(pudp, address) \
+ ((pmd_t *) pud_page(*(pudp)) + \
+ (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1)))
+
+/* Find an entry in the third-level page table.. */
+#define pte_index(dir, address) \
+ ((pte_t *) __pmd_page(*(dir)) + \
+ ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
+#define pte_offset_kernel pte_index
+#define pte_offset_map pte_index
+#define pte_offset_map_nested pte_index
+#define pte_unmap(pte) do { } while (0)
+#define pte_unmap_nested(pte) do { } while (0)
+
+/* Actual page table PTE updates. */
+extern void tlb_batch_add(struct mm_struct *mm, unsigned long vaddr, pte_t *ptep, pte_t orig);
+
+static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte)
+{
+ pte_t orig = *ptep;
+
+ *ptep = pte;
+
+ /* It is more efficient to let flush_tlb_kernel_range()
+ * handle init_mm tlb flushes.
+ */
+ if (likely(mm != &init_mm) && (pte_val(orig) & _PAGE_VALID))
+ tlb_batch_add(mm, addr, ptep, orig);
+}
+
+#define pte_clear(mm,addr,ptep) \
+ set_pte_at((mm), (addr), (ptep), __pte(0UL))
+
+extern pgd_t swapper_pg_dir[1];
+
+/* These do nothing with the way I have things setup. */
+#define mmu_lockarea(vaddr, len) (vaddr)
+#define mmu_unlockarea(vaddr, len) do { } while(0)
+
+struct vm_area_struct;
+extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t);
+
+/* Make a non-present pseudo-TTE. */
+static inline pte_t mk_pte_io(unsigned long page, pgprot_t prot, int space)
+{
+ pte_t pte;
+ pte_val(pte) = (((page) | pgprot_val(prot) | _PAGE_E) &
+ ~(unsigned long)_PAGE_CACHE);
+ pte_val(pte) |= (((unsigned long)space) << 32);
+ return pte;
+}
+
+/* Encode and de-code a swap entry */
+#define __swp_type(entry) (((entry).val >> PAGE_SHIFT) & 0xffUL)
+#define __swp_offset(entry) ((entry).val >> (PAGE_SHIFT + 8UL))
+#define __swp_entry(type, offset) \
+ ( (swp_entry_t) \
+ { \
+ (((long)(type) << PAGE_SHIFT) | \
+ ((long)(offset) << (PAGE_SHIFT + 8UL))) \
+ } )
+#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
+#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
+
+/* File offset in PTE support. */
+#define pte_file(pte) (pte_val(pte) & _PAGE_FILE)
+#define pte_to_pgoff(pte) (pte_val(pte) >> PAGE_SHIFT)
+#define pgoff_to_pte(off) (__pte(((off) << PAGE_SHIFT) | _PAGE_FILE))
+#define PTE_FILE_MAX_BITS (64UL - PAGE_SHIFT - 1UL)
+
+extern unsigned long prom_virt_to_phys(unsigned long, int *);
+
+static __inline__ unsigned long
+sun4u_get_pte (unsigned long addr)
+{
+ pgd_t *pgdp;
+ pud_t *pudp;
+ pmd_t *pmdp;
+ pte_t *ptep;
+
+ if (addr >= PAGE_OFFSET)
+ return addr & _PAGE_PADDR;
+ if ((addr >= LOW_OBP_ADDRESS) && (addr < HI_OBP_ADDRESS))
+ return prom_virt_to_phys(addr, NULL);
+ pgdp = pgd_offset_k(addr);
+ pudp = pud_offset(pgdp, addr);
+ pmdp = pmd_offset(pudp, addr);
+ ptep = pte_offset_kernel(pmdp, addr);
+ return pte_val(*ptep) & _PAGE_PADDR;
+}
+
+static __inline__ unsigned long
+__get_phys (unsigned long addr)
+{
+ return sun4u_get_pte (addr);
+}
+
+static __inline__ int
+__get_iospace (unsigned long addr)
+{
+ return ((sun4u_get_pte (addr) & 0xf0000000) >> 28);
+}
+
+extern unsigned long *sparc64_valid_addr_bitmap;
+
+/* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
+#define kern_addr_valid(addr) \
+ (test_bit(__pa((unsigned long)(addr))>>22, sparc64_valid_addr_bitmap))
+
+extern int io_remap_page_range(struct vm_area_struct *vma, unsigned long from,
+ unsigned long offset,
+ unsigned long size, pgprot_t prot, int space);
+extern int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
+ unsigned long pfn,
+ unsigned long size, pgprot_t prot);
+
+/*
+ * For sparc32&64, the pfn in io_remap_pfn_range() carries <iospace> in
+ * its high 4 bits. These macros/functions put it there or get it from there.
+ */
+#define MK_IOSPACE_PFN(space, pfn) (pfn | (space << (BITS_PER_LONG - 4)))
+#define GET_IOSPACE(pfn) (pfn >> (BITS_PER_LONG - 4))
+#define GET_PFN(pfn) (pfn & 0x0fffffffffffffffUL)
+
+/* Override for {pgd,pmd}_addr_end() to deal with the virtual address
+ * space hole. We simply sign extend bit 43.
+ */
+#define pgd_addr_end(addr, end) \
+({ unsigned long __boundary = ((addr) + PGDIR_SIZE) & PGDIR_MASK; \
+ __boundary = ((long) (__boundary << 20)) >> 20; \
+ (__boundary - 1 < (end) - 1)? __boundary: (end); \
+})
+
+#define pmd_addr_end(addr, end) \
+({ unsigned long __boundary = ((addr) + PMD_SIZE) & PMD_MASK; \
+ __boundary = ((long) (__boundary << 20)) >> 20; \
+ (__boundary - 1 < (end) - 1)? __boundary: (end); \
+})
+
+#include <asm-generic/pgtable.h>
+
+/* We provide our own get_unmapped_area to cope with VA holes for userland */
+#define HAVE_ARCH_UNMAPPED_AREA
+
+/* We provide a special get_unmapped_area for framebuffer mmaps to try and use
+ * the largest alignment possible such that larget PTEs can be used.
+ */
+extern unsigned long get_fb_unmapped_area(struct file *filp, unsigned long,
+ unsigned long, unsigned long,
+ unsigned long);
+#define HAVE_ARCH_FB_UNMAPPED_AREA
+
+/*
+ * No page table caches to initialise
+ */
+#define pgtable_cache_init() do { } while (0)
+
+extern void check_pgt_cache(void);
+
+#endif /* !(__ASSEMBLY__) */
+
+#endif /* !(_SPARC64_PGTABLE_H) */