diff options
| -rw-r--r-- | arch/m68k/sun3/sun3dvma.c | 79 |
1 files changed, 78 insertions, 1 deletions
diff --git a/arch/m68k/sun3/sun3dvma.c b/arch/m68k/sun3/sun3dvma.c index 71b9ace15b6d..a14b1c0d5b11 100644 --- a/arch/m68k/sun3/sun3dvma.c +++ b/arch/m68k/sun3/sun3dvma.c @@ -14,6 +14,8 @@ #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 @@ -22,6 +24,10 @@ static inline void dvma_unmap_iommu(unsigned long a, int b) } #endif +#ifdef CONFIG_SUN3 +extern void sun3_dvma_init(void); +#endif + unsigned long iommu_use[IOMMU_TOTAL_ENTRIES]; #define dvma_index(baddr) ((baddr - DVMA_START) >> DVMA_PAGE_SHIFT) @@ -39,6 +45,60 @@ 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 = 0; +static unsigned long dvma_frees = 0; +static unsigned long long dvma_alloc_bytes = 0; +static unsigned long long dvma_free_bytes = 0; + +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) { @@ -93,7 +153,11 @@ static inline unsigned long get_baddr(int len, unsigned long align) struct hole *hole; if(list_empty(&hole_list)) { - printk("out of dvma holes!\n"); +#ifdef DVMA_DEBUG + printk("out of dvma holes! (printing hole cache)\n"); + print_holes(&hole_cache); + print_use(); +#endif BUG(); } @@ -111,11 +175,19 @@ static inline unsigned long get_baddr(int len, unsigned long align) 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_del(&(hole->list)); list_add(&(hole->list), &hole_cache); dvma_entry_use(hole->start) = newlen; +#ifdef DVMA_DEBUG + dvma_allocs++; + dvma_alloc_bytes += newlen; +#endif return hole->start; } @@ -140,6 +212,11 @@ static inline int free_baddr(unsigned long baddr) 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); |