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Diffstat (limited to 'ANDROID_3.4.5/arch/m68k/sun3/sun3dvma.c')
-rw-r--r--ANDROID_3.4.5/arch/m68k/sun3/sun3dvma.c381
1 files changed, 0 insertions, 381 deletions
diff --git a/ANDROID_3.4.5/arch/m68k/sun3/sun3dvma.c b/ANDROID_3.4.5/arch/m68k/sun3/sun3dvma.c
deleted file mode 100644
index ca0966ca..00000000
--- a/ANDROID_3.4.5/arch/m68k/sun3/sun3dvma.c
+++ /dev/null
@@ -1,381 +0,0 @@
-/*
- * linux/arch/m68k/sun3/sun3dvma.c
- *
- * Copyright (C) 2000 Sam Creasey
- *
- * Contains common routines for sun3/sun3x DVMA management.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/gfp.h>
-#include <linux/mm.h>
-#include <linux/list.h>
-
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/dvma.h>
-
-#undef DVMA_DEBUG
-
-#ifdef CONFIG_SUN3X
-extern void dvma_unmap_iommu(unsigned long baddr, int len);
-#else
-static inline void dvma_unmap_iommu(unsigned long a, int b)
-{
-}
-#endif
-
-#ifdef CONFIG_SUN3
-extern void sun3_dvma_init(void);
-#endif
-
-static unsigned long iommu_use[IOMMU_TOTAL_ENTRIES];
-
-#define dvma_index(baddr) ((baddr - DVMA_START) >> DVMA_PAGE_SHIFT)
-
-#define dvma_entry_use(baddr) (iommu_use[dvma_index(baddr)])
-
-struct hole {
- unsigned long start;
- unsigned long end;
- unsigned long size;
- struct list_head list;
-};
-
-static struct list_head hole_list;
-static struct list_head hole_cache;
-static struct hole initholes[64];
-
-#ifdef DVMA_DEBUG
-
-static unsigned long dvma_allocs;
-static unsigned long dvma_frees;
-static unsigned long long dvma_alloc_bytes;
-static unsigned long long dvma_free_bytes;
-
-static void print_use(void)
-{
-
- int i;
- int j = 0;
-
- printk("dvma entry usage:\n");
-
- for(i = 0; i < IOMMU_TOTAL_ENTRIES; i++) {
- if(!iommu_use[i])
- continue;
-
- j++;
-
- printk("dvma entry: %08lx len %08lx\n",
- ( i << DVMA_PAGE_SHIFT) + DVMA_START,
- iommu_use[i]);
- }
-
- printk("%d entries in use total\n", j);
-
- printk("allocation/free calls: %lu/%lu\n", dvma_allocs, dvma_frees);
- printk("allocation/free bytes: %Lx/%Lx\n", dvma_alloc_bytes,
- dvma_free_bytes);
-}
-
-static void print_holes(struct list_head *holes)
-{
-
- struct list_head *cur;
- struct hole *hole;
-
- printk("listing dvma holes\n");
- list_for_each(cur, holes) {
- hole = list_entry(cur, struct hole, list);
-
- if((hole->start == 0) && (hole->end == 0) && (hole->size == 0))
- continue;
-
- printk("hole: start %08lx end %08lx size %08lx\n", hole->start, hole->end, hole->size);
- }
-
- printk("end of hole listing...\n");
-
-}
-#endif /* DVMA_DEBUG */
-
-static inline int refill(void)
-{
-
- struct hole *hole;
- struct hole *prev = NULL;
- struct list_head *cur;
- int ret = 0;
-
- list_for_each(cur, &hole_list) {
- hole = list_entry(cur, struct hole, list);
-
- if(!prev) {
- prev = hole;
- continue;
- }
-
- if(hole->end == prev->start) {
- hole->size += prev->size;
- hole->end = prev->end;
- list_move(&(prev->list), &hole_cache);
- ret++;
- }
-
- }
-
- return ret;
-}
-
-static inline struct hole *rmcache(void)
-{
- struct hole *ret;
-
- if(list_empty(&hole_cache)) {
- if(!refill()) {
- printk("out of dvma hole cache!\n");
- BUG();
- }
- }
-
- ret = list_entry(hole_cache.next, struct hole, list);
- list_del(&(ret->list));
-
- return ret;
-
-}
-
-static inline unsigned long get_baddr(int len, unsigned long align)
-{
-
- struct list_head *cur;
- struct hole *hole;
-
- if(list_empty(&hole_list)) {
-#ifdef DVMA_DEBUG
- printk("out of dvma holes! (printing hole cache)\n");
- print_holes(&hole_cache);
- print_use();
-#endif
- BUG();
- }
-
- list_for_each(cur, &hole_list) {
- unsigned long newlen;
-
- hole = list_entry(cur, struct hole, list);
-
- if(align > DVMA_PAGE_SIZE)
- newlen = len + ((hole->end - len) & (align-1));
- else
- newlen = len;
-
- if(hole->size > newlen) {
- hole->end -= newlen;
- hole->size -= newlen;
- dvma_entry_use(hole->end) = newlen;
-#ifdef DVMA_DEBUG
- dvma_allocs++;
- dvma_alloc_bytes += newlen;
-#endif
- return hole->end;
- } else if(hole->size == newlen) {
- list_move(&(hole->list), &hole_cache);
- dvma_entry_use(hole->start) = newlen;
-#ifdef DVMA_DEBUG
- dvma_allocs++;
- dvma_alloc_bytes += newlen;
-#endif
- return hole->start;
- }
-
- }
-
- printk("unable to find dvma hole!\n");
- BUG();
- return 0;
-}
-
-static inline int free_baddr(unsigned long baddr)
-{
-
- unsigned long len;
- struct hole *hole;
- struct list_head *cur;
- unsigned long orig_baddr;
-
- orig_baddr = baddr;
- len = dvma_entry_use(baddr);
- dvma_entry_use(baddr) = 0;
- baddr &= DVMA_PAGE_MASK;
- dvma_unmap_iommu(baddr, len);
-
-#ifdef DVMA_DEBUG
- dvma_frees++;
- dvma_free_bytes += len;
-#endif
-
- list_for_each(cur, &hole_list) {
- hole = list_entry(cur, struct hole, list);
-
- if(hole->end == baddr) {
- hole->end += len;
- hole->size += len;
- return 0;
- } else if(hole->start == (baddr + len)) {
- hole->start = baddr;
- hole->size += len;
- return 0;
- }
-
- }
-
- hole = rmcache();
-
- hole->start = baddr;
- hole->end = baddr + len;
- hole->size = len;
-
-// list_add_tail(&(hole->list), cur);
- list_add(&(hole->list), cur);
-
- return 0;
-
-}
-
-void dvma_init(void)
-{
-
- struct hole *hole;
- int i;
-
- INIT_LIST_HEAD(&hole_list);
- INIT_LIST_HEAD(&hole_cache);
-
- /* prepare the hole cache */
- for(i = 0; i < 64; i++)
- list_add(&(initholes[i].list), &hole_cache);
-
- hole = rmcache();
- hole->start = DVMA_START;
- hole->end = DVMA_END;
- hole->size = DVMA_SIZE;
-
- list_add(&(hole->list), &hole_list);
-
- memset(iommu_use, 0, sizeof(iommu_use));
-
- dvma_unmap_iommu(DVMA_START, DVMA_SIZE);
-
-#ifdef CONFIG_SUN3
- sun3_dvma_init();
-#endif
-
-}
-
-inline unsigned long dvma_map_align(unsigned long kaddr, int len, int align)
-{
-
- unsigned long baddr;
- unsigned long off;
-
- if(!len)
- len = 0x800;
-
- if(!kaddr || !len) {
-// printk("error: kaddr %lx len %x\n", kaddr, len);
-// *(int *)4 = 0;
- return 0;
- }
-
-#ifdef DEBUG
- printk("dvma_map request %08lx bytes from %08lx\n",
- len, kaddr);
-#endif
- off = kaddr & ~DVMA_PAGE_MASK;
- kaddr &= PAGE_MASK;
- len += off;
- len = ((len + (DVMA_PAGE_SIZE-1)) & DVMA_PAGE_MASK);
-
- if(align == 0)
- align = DVMA_PAGE_SIZE;
- else
- align = ((align + (DVMA_PAGE_SIZE-1)) & DVMA_PAGE_MASK);
-
- baddr = get_baddr(len, align);
-// printk("using baddr %lx\n", baddr);
-
- if(!dvma_map_iommu(kaddr, baddr, len))
- return (baddr + off);
-
- printk("dvma_map failed kaddr %lx baddr %lx len %x\n", kaddr, baddr, len);
- BUG();
- return 0;
-}
-EXPORT_SYMBOL(dvma_map_align);
-
-void dvma_unmap(void *baddr)
-{
- unsigned long addr;
-
- addr = (unsigned long)baddr;
- /* check if this is a vme mapping */
- if(!(addr & 0x00f00000))
- addr |= 0xf00000;
-
- free_baddr(addr);
-
- return;
-
-}
-EXPORT_SYMBOL(dvma_unmap);
-
-void *dvma_malloc_align(unsigned long len, unsigned long align)
-{
- unsigned long kaddr;
- unsigned long baddr;
- unsigned long vaddr;
-
- if(!len)
- return NULL;
-
-#ifdef DEBUG
- printk("dvma_malloc request %lx bytes\n", len);
-#endif
- len = ((len + (DVMA_PAGE_SIZE-1)) & DVMA_PAGE_MASK);
-
- if((kaddr = __get_free_pages(GFP_ATOMIC, get_order(len))) == 0)
- return NULL;
-
- if((baddr = (unsigned long)dvma_map_align(kaddr, len, align)) == 0) {
- free_pages(kaddr, get_order(len));
- return NULL;
- }
-
- vaddr = dvma_btov(baddr);
-
- if(dvma_map_cpu(kaddr, vaddr, len) < 0) {
- dvma_unmap((void *)baddr);
- free_pages(kaddr, get_order(len));
- return NULL;
- }
-
-#ifdef DEBUG
- printk("mapped %08lx bytes %08lx kern -> %08lx bus\n",
- len, kaddr, baddr);
-#endif
-
- return (void *)vaddr;
-
-}
-EXPORT_SYMBOL(dvma_malloc_align);
-
-void dvma_free(void *vaddr)
-{
-
- return;
-
-}
-EXPORT_SYMBOL(dvma_free);
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