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authorDavid S. Miller <davem@sunset.davemloft.net>2005-09-28 21:46:43 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2005-09-28 21:46:43 -0700
commit10147570f9eaff3920f0c67bad7244c2eb958d4f (patch)
tree213bdf97f2ac9d2dc3708db19da4ea41ca4f1606
parent0836a0eb4073c3e0a09c5965833b9dec19f5abc7 (diff)
[SPARC64]: Kill all external references to sp_banks[]
Thus, we can mark sp_banks[] static in arch/sparc64/mm/init.c Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--arch/sparc64/kernel/traps.c33
-rw-r--r--arch/sparc64/mm/fault.c2
-rw-r--r--arch/sparc64/mm/init.c23
-rw-r--r--include/asm-sparc64/page.h17
-rw-r--r--include/asm-sparc64/pgtable.h1
5 files changed, 29 insertions, 47 deletions
diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c
index 1aa15990f5a..eeb1e835c42 100644
--- a/arch/sparc64/kernel/traps.c
+++ b/arch/sparc64/kernel/traps.c
@@ -757,26 +757,12 @@ void __init cheetah_ecache_flush_init(void)
ecache_flush_size = (2 * largest_size);
ecache_flush_linesize = smallest_linesize;
- /* Discover a physically contiguous chunk of physical
- * memory in 'sp_banks' of size ecache_flush_size calculated
- * above. Store the physical base of this area at
- * ecache_flush_physbase.
- */
- for (node = 0; ; node++) {
- if (sp_banks[node].num_bytes == 0)
- break;
- if (sp_banks[node].num_bytes >= ecache_flush_size) {
- ecache_flush_physbase = sp_banks[node].base_addr;
- break;
- }
- }
+ ecache_flush_physbase = find_ecache_flush_span(ecache_flush_size);
- /* Note: Zero would be a valid value of ecache_flush_physbase so
- * don't use that as the success test. :-)
- */
- if (sp_banks[node].num_bytes == 0) {
+ if (ecache_flush_physbase == ~0UL) {
prom_printf("cheetah_ecache_flush_init: Cannot find %d byte "
- "contiguous physical memory.\n", ecache_flush_size);
+ "contiguous physical memory.\n",
+ ecache_flush_size);
prom_halt();
}
@@ -1345,16 +1331,9 @@ static int cheetah_fix_ce(unsigned long physaddr)
/* Return non-zero if PADDR is a valid physical memory address. */
static int cheetah_check_main_memory(unsigned long paddr)
{
- int i;
+ unsigned long vaddr = PAGE_OFFSET + paddr;
- for (i = 0; ; i++) {
- if (sp_banks[i].num_bytes == 0)
- break;
- if (paddr >= sp_banks[i].base_addr &&
- paddr < (sp_banks[i].base_addr + sp_banks[i].num_bytes))
- return 1;
- }
- return 0;
+ return kern_addr_valid(vaddr);
}
void cheetah_cee_handler(struct pt_regs *regs, unsigned long afsr, unsigned long afar)
diff --git a/arch/sparc64/mm/fault.c b/arch/sparc64/mm/fault.c
index 80793d61f31..31fbc67719a 100644
--- a/arch/sparc64/mm/fault.c
+++ b/arch/sparc64/mm/fault.c
@@ -32,8 +32,6 @@
#define ELEMENTS(arr) (sizeof (arr)/sizeof (arr[0]))
-extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS];
-
/*
* To debug kernel to catch accesses to certain virtual/physical addresses.
* Mode = 0 selects physical watchpoints, mode = 1 selects virtual watchpoints.
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 63a7b9bafaf..48851a2e4fe 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -41,7 +41,14 @@
extern void device_scan(void);
-struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS];
+struct sparc_phys_banks {
+ unsigned long base_addr;
+ unsigned long num_bytes;
+};
+
+#define SPARC_PHYS_BANKS 32
+
+static struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS];
unsigned long *sparc64_valid_addr_bitmap __read_mostly;
@@ -1425,6 +1432,20 @@ void kernel_map_pages(struct page *page, int numpages, int enable)
}
#endif
+unsigned long __init find_ecache_flush_span(unsigned long size)
+{
+ unsigned long i;
+
+ for (i = 0; ; i++) {
+ if (sp_banks[i].num_bytes == 0)
+ break;
+ if (sp_banks[i].num_bytes >= size)
+ return sp_banks[i].base_addr;
+ }
+
+ return ~0UL;
+}
+
static void __init prom_probe_memory(void)
{
struct linux_mlist_p1275 *mlist;
diff --git a/include/asm-sparc64/page.h b/include/asm-sparc64/page.h
index 7f8d764abc4..5426bb28a99 100644
--- a/include/asm-sparc64/page.h
+++ b/include/asm-sparc64/page.h
@@ -140,23 +140,6 @@ extern unsigned long page_to_pfn(struct page *);
#define virt_to_phys __pa
#define phys_to_virt __va
-/* The following structure is used to hold the physical
- * memory configuration of the machine. This is filled in
- * probe_memory() and is later used by mem_init() to set up
- * mem_map[]. We statically allocate SPARC_PHYS_BANKS of
- * these structs, this is arbitrary. The entry after the
- * last valid one has num_bytes==0.
- */
-
-struct sparc_phys_banks {
- unsigned long base_addr;
- unsigned long num_bytes;
-};
-
-#define SPARC_PHYS_BANKS 32
-
-extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS];
-
#endif /* !(__ASSEMBLY__) */
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
diff --git a/include/asm-sparc64/pgtable.h b/include/asm-sparc64/pgtable.h
index 82273c801b0..8c6dfc6c7af 100644
--- a/include/asm-sparc64/pgtable.h
+++ b/include/asm-sparc64/pgtable.h
@@ -342,6 +342,7 @@ extern pgd_t swapper_pg_dir[2048];
extern pmd_t swapper_low_pmd_dir[2048];
extern void paging_init(void);
+extern unsigned long find_ecache_flush_span(unsigned long size);
/* These do nothing with the way I have things setup. */
#define mmu_lockarea(vaddr, len) (vaddr)