aboutsummaryrefslogtreecommitdiff
path: root/arch/sparc/include/asm
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc/include/asm')
-rw-r--r--arch/sparc/include/asm/page_32.h10
-rw-r--r--arch/sparc/include/asm/pgalloc_32.h5
-rw-r--r--arch/sparc/include/asm/pgtable_32.h29
-rw-r--r--arch/sparc/include/asm/pgtsrmmu.h36
-rw-r--r--arch/sparc/include/asm/viking.h5
5 files changed, 29 insertions, 56 deletions
diff --git a/arch/sparc/include/asm/page_32.h b/arch/sparc/include/asm/page_32.h
index 478260002836..da01c8c45412 100644
--- a/arch/sparc/include/asm/page_32.h
+++ b/arch/sparc/include/asm/page_32.h
@@ -54,7 +54,7 @@ extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS+1];
*/
typedef struct { unsigned long pte; } pte_t;
typedef struct { unsigned long iopte; } iopte_t;
-typedef struct { unsigned long pmdv[16]; } pmd_t;
+typedef struct { unsigned long pmd; } pmd_t;
typedef struct { unsigned long pgd; } pgd_t;
typedef struct { unsigned long ctxd; } ctxd_t;
typedef struct { unsigned long pgprot; } pgprot_t;
@@ -62,7 +62,7 @@ typedef struct { unsigned long iopgprot; } iopgprot_t;
#define pte_val(x) ((x).pte)
#define iopte_val(x) ((x).iopte)
-#define pmd_val(x) ((x).pmdv[0])
+#define pmd_val(x) ((x).pmd)
#define pgd_val(x) ((x).pgd)
#define ctxd_val(x) ((x).ctxd)
#define pgprot_val(x) ((x).pgprot)
@@ -82,7 +82,7 @@ typedef struct { unsigned long iopgprot; } iopgprot_t;
*/
typedef unsigned long pte_t;
typedef unsigned long iopte_t;
-typedef struct { unsigned long pmdv[16]; } pmd_t;
+typedef unsigned long pmd_t;
typedef unsigned long pgd_t;
typedef unsigned long ctxd_t;
typedef unsigned long pgprot_t;
@@ -90,14 +90,14 @@ typedef unsigned long iopgprot_t;
#define pte_val(x) (x)
#define iopte_val(x) (x)
-#define pmd_val(x) ((x).pmdv[0])
+#define pmd_val(x) (x)
#define pgd_val(x) (x)
#define ctxd_val(x) (x)
#define pgprot_val(x) (x)
#define iopgprot_val(x) (x)
#define __pte(x) (x)
-#define __pmd(x) ((pmd_t) { { (x) }, })
+#define __pmd(x) (x)
#define __iopte(x) (x)
#define __pgd(x) (x)
#define __ctxd(x) (x)
diff --git a/arch/sparc/include/asm/pgalloc_32.h b/arch/sparc/include/asm/pgalloc_32.h
index eae0c92ec422..99c032424946 100644
--- a/arch/sparc/include/asm/pgalloc_32.h
+++ b/arch/sparc/include/asm/pgalloc_32.h
@@ -60,13 +60,14 @@ pgtable_t pte_alloc_one(struct mm_struct *mm);
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
{
- return srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
+ return srmmu_get_nocache(SRMMU_PTE_TABLE_SIZE,
+ SRMMU_PTE_TABLE_SIZE);
}
static inline void free_pte_fast(pte_t *pte)
{
- srmmu_free_nocache(pte, PTE_SIZE);
+ srmmu_free_nocache(pte, SRMMU_PTE_TABLE_SIZE);
}
#define pte_free_kernel(mm, pte) free_pte_fast(pte)
diff --git a/arch/sparc/include/asm/pgtable_32.h b/arch/sparc/include/asm/pgtable_32.h
index 0de659ae0ba4..3367e2ba89e0 100644
--- a/arch/sparc/include/asm/pgtable_32.h
+++ b/arch/sparc/include/asm/pgtable_32.h
@@ -11,6 +11,16 @@
#include <linux/const.h>
+#define PMD_SHIFT 18
+#define PMD_SIZE (1UL << PMD_SHIFT)
+#define PMD_MASK (~(PMD_SIZE-1))
+#define PMD_ALIGN(__addr) (((__addr) + ~PMD_MASK) & PMD_MASK)
+
+#define PGDIR_SHIFT 24
+#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
+#define PGDIR_MASK (~(PGDIR_SIZE-1))
+#define PGDIR_ALIGN(__addr) (((__addr) + ~PGDIR_MASK) & PGDIR_MASK)
+
#ifndef __ASSEMBLY__
#include <asm-generic/pgtable-nopud.h>
@@ -34,17 +44,10 @@ unsigned long __init bootmem_init(unsigned long *pages_avail);
#define pmd_ERROR(e) __builtin_trap()
#define pgd_ERROR(e) __builtin_trap()
-#define PMD_SHIFT 22
-#define PMD_SIZE (1UL << PMD_SHIFT)
-#define PMD_MASK (~(PMD_SIZE-1))
-#define PMD_ALIGN(__addr) (((__addr) + ~PMD_MASK) & PMD_MASK)
-#define PGDIR_SHIFT SRMMU_PGDIR_SHIFT
-#define PGDIR_SIZE SRMMU_PGDIR_SIZE
-#define PGDIR_MASK SRMMU_PGDIR_MASK
-#define PTRS_PER_PTE 1024
-#define PTRS_PER_PMD SRMMU_PTRS_PER_PMD
-#define PTRS_PER_PGD SRMMU_PTRS_PER_PGD
-#define USER_PTRS_PER_PGD PAGE_OFFSET / SRMMU_PGDIR_SIZE
+#define PTRS_PER_PTE 64
+#define PTRS_PER_PMD 64
+#define PTRS_PER_PGD 256
+#define USER_PTRS_PER_PGD PAGE_OFFSET / PGDIR_SIZE
#define FIRST_USER_ADDRESS 0UL
#define PTE_SIZE (PTRS_PER_PTE*4)
@@ -179,9 +182,7 @@ static inline int pmd_none(pmd_t pmd)
static inline void pmd_clear(pmd_t *pmdp)
{
- int i;
- for (i = 0; i < PTRS_PER_PTE/SRMMU_REAL_PTRS_PER_PTE; i++)
- set_pte((pte_t *)&pmdp->pmdv[i], __pte(0));
+ set_pte((pte_t *)&pmd_val(*pmdp), __pte(0));
}
static inline int pud_none(pud_t pud)
diff --git a/arch/sparc/include/asm/pgtsrmmu.h b/arch/sparc/include/asm/pgtsrmmu.h
index 32a508897501..58ea8e8c6ee7 100644
--- a/arch/sparc/include/asm/pgtsrmmu.h
+++ b/arch/sparc/include/asm/pgtsrmmu.h
@@ -17,39 +17,9 @@
/* Number of contexts is implementation-dependent; 64k is the most we support */
#define SRMMU_MAX_CONTEXTS 65536
-/* PMD_SHIFT determines the size of the area a second-level page table entry can map */
-#define SRMMU_REAL_PMD_SHIFT 18
-#define SRMMU_REAL_PMD_SIZE (1UL << SRMMU_REAL_PMD_SHIFT)
-#define SRMMU_REAL_PMD_MASK (~(SRMMU_REAL_PMD_SIZE-1))
-#define SRMMU_REAL_PMD_ALIGN(__addr) (((__addr)+SRMMU_REAL_PMD_SIZE-1)&SRMMU_REAL_PMD_MASK)
-
-/* PGDIR_SHIFT determines what a third-level page table entry can map */
-#define SRMMU_PGDIR_SHIFT 24
-#define SRMMU_PGDIR_SIZE (1UL << SRMMU_PGDIR_SHIFT)
-#define SRMMU_PGDIR_MASK (~(SRMMU_PGDIR_SIZE-1))
-#define SRMMU_PGDIR_ALIGN(addr) (((addr)+SRMMU_PGDIR_SIZE-1)&SRMMU_PGDIR_MASK)
-
-#define SRMMU_REAL_PTRS_PER_PTE 64
-#define SRMMU_REAL_PTRS_PER_PMD 64
-#define SRMMU_PTRS_PER_PGD 256
-
-#define SRMMU_REAL_PTE_TABLE_SIZE (SRMMU_REAL_PTRS_PER_PTE*4)
-#define SRMMU_PMD_TABLE_SIZE (SRMMU_REAL_PTRS_PER_PMD*4)
-#define SRMMU_PGD_TABLE_SIZE (SRMMU_PTRS_PER_PGD*4)
-
-/*
- * To support pagetables in highmem, Linux introduces APIs which
- * return struct page* and generally manipulate page tables when
- * they are not mapped into kernel space. Our hardware page tables
- * are smaller than pages. We lump hardware tabes into big, page sized
- * software tables.
- *
- * PMD_SHIFT determines the size of the area a second-level page table entry
- * can map, and our pmd_t is 16 times larger than normal. The values which
- * were once defined here are now generic for 4c and srmmu, so they're
- * found in pgtable.h.
- */
-#define SRMMU_PTRS_PER_PMD 4
+#define SRMMU_PTE_TABLE_SIZE (PAGE_SIZE)
+#define SRMMU_PMD_TABLE_SIZE (PAGE_SIZE)
+#define SRMMU_PGD_TABLE_SIZE (PTRS_PER_PGD*4)
/* Definition of the values in the ET field of PTD's and PTE's */
#define SRMMU_ET_MASK 0x3
diff --git a/arch/sparc/include/asm/viking.h b/arch/sparc/include/asm/viking.h
index 0bbefd184221..08ffc605035f 100644
--- a/arch/sparc/include/asm/viking.h
+++ b/arch/sparc/include/asm/viking.h
@@ -10,6 +10,7 @@
#include <asm/asi.h>
#include <asm/mxcc.h>
+#include <asm/pgtable.h>
#include <asm/pgtsrmmu.h>
/* Bits in the SRMMU control register for GNU/Viking modules.
@@ -227,7 +228,7 @@ static inline unsigned long viking_hwprobe(unsigned long vaddr)
: "=r" (val)
: "r" (vaddr | 0x200), "i" (ASI_M_FLUSH_PROBE));
if ((val & SRMMU_ET_MASK) == SRMMU_ET_PTE) {
- vaddr &= ~SRMMU_PGDIR_MASK;
+ vaddr &= ~PGDIR_MASK;
vaddr >>= PAGE_SHIFT;
return val | (vaddr << 8);
}
@@ -237,7 +238,7 @@ static inline unsigned long viking_hwprobe(unsigned long vaddr)
: "=r" (val)
: "r" (vaddr | 0x100), "i" (ASI_M_FLUSH_PROBE));
if ((val & SRMMU_ET_MASK) == SRMMU_ET_PTE) {
- vaddr &= ~SRMMU_REAL_PMD_MASK;
+ vaddr &= ~PMD_MASK;
vaddr >>= PAGE_SHIFT;
return val | (vaddr << 8);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-02 09:25:12 +0000