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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-26 13:23:17 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-26 13:23:17 -0700 |
commit | 7f268a2ba7c884a239713696238dd4207a57dd9a (patch) | |
tree | fdc02fecda32f5df8de3ddc2c01c29ba68e6a42b /arch/blackfin/mm | |
parent | 689796a141cea79d745a4689c65dd01c39e5e100 (diff) | |
parent | 2d2009806dd843f3adc0cbbb5d2204980f28111a (diff) | |
download | blackbird-op-linux-7f268a2ba7c884a239713696238dd4207a57dd9a.tar.gz blackbird-op-linux-7f268a2ba7c884a239713696238dd4207a57dd9a.zip |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: (30 commits)
Blackfin arch: If we double fault, rather than hang forever, reset
Blackfin arch: When icache is off, make sure people know it
Blackfin arch: Fix bug - skip single step in high priority interrupt handler instead of disabling all interrupts in single step debugging.
Blackfin arch: cache the values of vco/sclk/cclk as the overhead of doing so (~24 bytes) is worth avoiding the software mult/div routines
Blackfin arch: fix bug - IMDMA is not type struct dma_register
Blackfin arch: check the EXTBANKS field of the DDRCTL1 register to see if we are using both memory banks
Blackfin arch: Apply Bluetechnix CM-BF527 board support patch
Blackfin arch: Add unwinding for stack info, and a little more detail on trace buffer
Blackfin arch: Add ISP1760 board resources to BF548-EZKIT
Blackfin arch: fix bug - detect 0.1 silicon revision BF527-EZKIT as 0.0 version
Blackfin arch: add missing IORESOURCE_MEM flags to UART3
Blackfin arch: Add return value check in bfin_sir_probe(), remove SSYNC().
Blackfin arch: Extend sram malloc to handle L2 SRAM.
Blackfin arch: Remove useless config option.
Blackfin arch: change L1 malloc to base on slab cache and lists.
Blackfin arch: use local labels and ENDPROC() markings
Blackfin arch: Do not need this dualcore test module in kernel.
Blackfin arch: Allow ptrace to peek and poke application data in L1 data SRAM.
Blackfin arch: Add ANOMALY_05000368 workaround
Blackfin arch: Functional power management support
...
Diffstat (limited to 'arch/blackfin/mm')
-rw-r--r-- | arch/blackfin/mm/blackfin_sram.c | 543 | ||||
-rw-r--r-- | arch/blackfin/mm/blackfin_sram.h | 4 | ||||
-rw-r--r-- | arch/blackfin/mm/init.c | 12 |
3 files changed, 381 insertions, 178 deletions
diff --git a/arch/blackfin/mm/blackfin_sram.c b/arch/blackfin/mm/blackfin_sram.c index 3246f91c7baa..5af3c31c9365 100644 --- a/arch/blackfin/mm/blackfin_sram.c +++ b/arch/blackfin/mm/blackfin_sram.c @@ -41,215 +41,309 @@ #include <asm/blackfin.h> #include "blackfin_sram.h" -spinlock_t l1sram_lock, l1_data_sram_lock, l1_inst_sram_lock; - -#if CONFIG_L1_MAX_PIECE < 16 -#undef CONFIG_L1_MAX_PIECE -#define CONFIG_L1_MAX_PIECE 16 -#endif - -#if CONFIG_L1_MAX_PIECE > 1024 -#undef CONFIG_L1_MAX_PIECE -#define CONFIG_L1_MAX_PIECE 1024 -#endif - -#define SRAM_SLT_NULL 0 -#define SRAM_SLT_FREE 1 -#define SRAM_SLT_ALLOCATED 2 +static spinlock_t l1sram_lock, l1_data_sram_lock, l1_inst_sram_lock; +static spinlock_t l2_sram_lock; /* the data structure for L1 scratchpad and DATA SRAM */ -struct l1_sram_piece { +struct sram_piece { void *paddr; int size; - int flag; pid_t pid; + struct sram_piece *next; }; -static struct l1_sram_piece l1_ssram[CONFIG_L1_MAX_PIECE]; +static struct sram_piece free_l1_ssram_head, used_l1_ssram_head; #if L1_DATA_A_LENGTH != 0 -static struct l1_sram_piece l1_data_A_sram[CONFIG_L1_MAX_PIECE]; +static struct sram_piece free_l1_data_A_sram_head, used_l1_data_A_sram_head; #endif #if L1_DATA_B_LENGTH != 0 -static struct l1_sram_piece l1_data_B_sram[CONFIG_L1_MAX_PIECE]; +static struct sram_piece free_l1_data_B_sram_head, used_l1_data_B_sram_head; #endif #if L1_CODE_LENGTH != 0 -static struct l1_sram_piece l1_inst_sram[CONFIG_L1_MAX_PIECE]; +static struct sram_piece free_l1_inst_sram_head, used_l1_inst_sram_head; +#endif + +#ifdef L2_LENGTH +static struct sram_piece free_l2_sram_head, used_l2_sram_head; #endif +static struct kmem_cache *sram_piece_cache; + /* L1 Scratchpad SRAM initialization function */ -void __init l1sram_init(void) +static void __init l1sram_init(void) { - printk(KERN_INFO "Blackfin Scratchpad data SRAM: %d KB\n", - L1_SCRATCH_LENGTH >> 10); + free_l1_ssram_head.next = + kmem_cache_alloc(sram_piece_cache, GFP_KERNEL); + if (!free_l1_ssram_head.next) { + printk(KERN_INFO"Fail to initialize Scratchpad data SRAM.\n"); + return; + } + + free_l1_ssram_head.next->paddr = (void *)L1_SCRATCH_START; + free_l1_ssram_head.next->size = L1_SCRATCH_LENGTH; + free_l1_ssram_head.next->pid = 0; + free_l1_ssram_head.next->next = NULL; - memset(&l1_ssram, 0x00, sizeof(l1_ssram)); - l1_ssram[0].paddr = (void *)L1_SCRATCH_START; - l1_ssram[0].size = L1_SCRATCH_LENGTH; - l1_ssram[0].flag = SRAM_SLT_FREE; + used_l1_ssram_head.next = NULL; /* mutex initialize */ spin_lock_init(&l1sram_lock); + + printk(KERN_INFO "Blackfin Scratchpad data SRAM: %d KB\n", + L1_SCRATCH_LENGTH >> 10); } -void __init l1_data_sram_init(void) +static void __init l1_data_sram_init(void) { #if L1_DATA_A_LENGTH != 0 - memset(&l1_data_A_sram, 0x00, sizeof(l1_data_A_sram)); - l1_data_A_sram[0].paddr = (void *)L1_DATA_A_START + - (_ebss_l1 - _sdata_l1); - l1_data_A_sram[0].size = L1_DATA_A_LENGTH - (_ebss_l1 - _sdata_l1); - l1_data_A_sram[0].flag = SRAM_SLT_FREE; - - printk(KERN_INFO "Blackfin Data A SRAM: %d KB (%d KB free)\n", - L1_DATA_A_LENGTH >> 10, l1_data_A_sram[0].size >> 10); + free_l1_data_A_sram_head.next = + kmem_cache_alloc(sram_piece_cache, GFP_KERNEL); + if (!free_l1_data_A_sram_head.next) { + printk(KERN_INFO"Fail to initialize L1 Data A SRAM.\n"); + return; + } + + free_l1_data_A_sram_head.next->paddr = + (void *)L1_DATA_A_START + (_ebss_l1 - _sdata_l1); + free_l1_data_A_sram_head.next->size = + L1_DATA_A_LENGTH - (_ebss_l1 - _sdata_l1); + free_l1_data_A_sram_head.next->pid = 0; + free_l1_data_A_sram_head.next->next = NULL; + + used_l1_data_A_sram_head.next = NULL; + + printk(KERN_INFO "Blackfin L1 Data A SRAM: %d KB (%d KB free)\n", + L1_DATA_A_LENGTH >> 10, + free_l1_data_A_sram_head.next->size >> 10); #endif #if L1_DATA_B_LENGTH != 0 - memset(&l1_data_B_sram, 0x00, sizeof(l1_data_B_sram)); - l1_data_B_sram[0].paddr = (void *)L1_DATA_B_START + - (_ebss_b_l1 - _sdata_b_l1); - l1_data_B_sram[0].size = L1_DATA_B_LENGTH - (_ebss_b_l1 - _sdata_b_l1); - l1_data_B_sram[0].flag = SRAM_SLT_FREE; - - printk(KERN_INFO "Blackfin Data B SRAM: %d KB (%d KB free)\n", - L1_DATA_B_LENGTH >> 10, l1_data_B_sram[0].size >> 10); + free_l1_data_B_sram_head.next = + kmem_cache_alloc(sram_piece_cache, GFP_KERNEL); + if (!free_l1_data_B_sram_head.next) { + printk(KERN_INFO"Fail to initialize L1 Data B SRAM.\n"); + return; + } + + free_l1_data_B_sram_head.next->paddr = + (void *)L1_DATA_B_START + (_ebss_b_l1 - _sdata_b_l1); + free_l1_data_B_sram_head.next->size = + L1_DATA_B_LENGTH - (_ebss_b_l1 - _sdata_b_l1); + free_l1_data_B_sram_head.next->pid = 0; + free_l1_data_B_sram_head.next->next = NULL; + + used_l1_data_B_sram_head.next = NULL; + + printk(KERN_INFO "Blackfin L1 Data B SRAM: %d KB (%d KB free)\n", + L1_DATA_B_LENGTH >> 10, + free_l1_data_B_sram_head.next->size >> 10); #endif /* mutex initialize */ spin_lock_init(&l1_data_sram_lock); } -void __init l1_inst_sram_init(void) +static void __init l1_inst_sram_init(void) { #if L1_CODE_LENGTH != 0 - memset(&l1_inst_sram, 0x00, sizeof(l1_inst_sram)); - l1_inst_sram[0].paddr = (void *)L1_CODE_START + (_etext_l1 - _stext_l1); - l1_inst_sram[0].size = L1_CODE_LENGTH - (_etext_l1 - _stext_l1); - l1_inst_sram[0].flag = SRAM_SLT_FREE; + free_l1_inst_sram_head.next = + kmem_cache_alloc(sram_piece_cache, GFP_KERNEL); + if (!free_l1_inst_sram_head.next) { + printk(KERN_INFO"Fail to initialize L1 Instruction SRAM.\n"); + return; + } - printk(KERN_INFO "Blackfin Instruction SRAM: %d KB (%d KB free)\n", - L1_CODE_LENGTH >> 10, l1_inst_sram[0].size >> 10); + free_l1_inst_sram_head.next->paddr = + (void *)L1_CODE_START + (_etext_l1 - _stext_l1); + free_l1_inst_sram_head.next->size = + L1_CODE_LENGTH - (_etext_l1 - _stext_l1); + free_l1_inst_sram_head.next->pid = 0; + free_l1_inst_sram_head.next->next = NULL; + + used_l1_inst_sram_head.next = NULL; + + printk(KERN_INFO "Blackfin L1 Instruction SRAM: %d KB (%d KB free)\n", + L1_CODE_LENGTH >> 10, + free_l1_inst_sram_head.next->size >> 10); #endif /* mutex initialize */ spin_lock_init(&l1_inst_sram_lock); } -/* L1 memory allocate function */ -static void *_l1_sram_alloc(size_t size, struct l1_sram_piece *pfree, int count) +static void __init l2_sram_init(void) { - int i, index = 0; - void *addr = NULL; +#ifdef L2_LENGTH + free_l2_sram_head.next = + kmem_cache_alloc(sram_piece_cache, GFP_KERNEL); + if (!free_l2_sram_head.next) { + printk(KERN_INFO"Fail to initialize L2 SRAM.\n"); + return; + } - if (size <= 0) + free_l2_sram_head.next->paddr = (void *)L2_START + + (_etext_l2 - _stext_l2) + (_edata_l2 - _sdata_l2); + free_l2_sram_head.next->size = L2_LENGTH - + (_etext_l2 - _stext_l2) + (_edata_l2 - _sdata_l2); + free_l2_sram_head.next->pid = 0; + free_l2_sram_head.next->next = NULL; + + used_l2_sram_head.next = NULL; + + printk(KERN_INFO "Blackfin L2 SRAM: %d KB (%d KB free)\n", + L2_LENGTH >> 10, + free_l2_sram_head.next->size >> 10); +#endif + + /* mutex initialize */ + spin_lock_init(&l2_sram_lock); +} +void __init bfin_sram_init(void) +{ + sram_piece_cache = kmem_cache_create("sram_piece_cache", + sizeof(struct sram_piece), + 0, SLAB_PANIC, NULL); + + l1sram_init(); + l1_data_sram_init(); + l1_inst_sram_init(); + l2_sram_init(); +} + +/* SRAM allocate function */ +static void *_sram_alloc(size_t size, struct sram_piece *pfree_head, + struct sram_piece *pused_head) +{ + struct sram_piece *pslot, *plast, *pavail; + + if (size <= 0 || !pfree_head || !pused_head) return NULL; /* Align the size */ size = (size + 3) & ~3; - /* not use the good method to match the best slot !!! */ - /* search an available memory slot */ - for (i = 0; i < count; i++) { - if ((pfree[i].flag == SRAM_SLT_FREE) - && (pfree[i].size >= size)) { - addr = pfree[i].paddr; - pfree[i].flag = SRAM_SLT_ALLOCATED; - pfree[i].pid = current->pid; - index = i; - break; - } + pslot = pfree_head->next; + plast = pfree_head; + + /* search an available piece slot */ + while (pslot != NULL && size > pslot->size) { + plast = pslot; + pslot = pslot->next; } - if (i >= count) + + if (!pslot) return NULL; - /* updated the NULL memory slot !!! */ - if (pfree[i].size > size) { - for (i = 0; i < count; i++) { - if (pfree[i].flag == SRAM_SLT_NULL) { - pfree[i].pid = 0; - pfree[i].flag = SRAM_SLT_FREE; - pfree[i].paddr = addr + size; - pfree[i].size = pfree[index].size - size; - pfree[index].size = size; - break; - } - } + if (pslot->size == size) { + plast->next = pslot->next; + pavail = pslot; + } else { + pavail = kmem_cache_alloc(sram_piece_cache, GFP_KERNEL); + + if (!pavail) + return NULL; + + pavail->paddr = pslot->paddr; + pavail->size = size; + pslot->paddr += size; + pslot->size -= size; } - return addr; + pavail->pid = current->pid; + + pslot = pused_head->next; + plast = pused_head; + + /* insert new piece into used piece list !!! */ + while (pslot != NULL && pavail->paddr < pslot->paddr) { + plast = pslot; + pslot = pslot->next; + } + + pavail->next = pslot; + plast->next = pavail; + + return pavail->paddr; } /* Allocate the largest available block. */ -static void *_l1_sram_alloc_max(struct l1_sram_piece *pfree, int count, +static void *_sram_alloc_max(struct sram_piece *pfree_head, + struct sram_piece *pused_head, unsigned long *psize) { - unsigned long best = 0; - int i, index = -1; - void *addr = NULL; + struct sram_piece *pslot, *pmax; - /* search an available memory slot */ - for (i = 0; i < count; i++) { - if (pfree[i].flag == SRAM_SLT_FREE && pfree[i].size > best) { - addr = pfree[i].paddr; - index = i; - best = pfree[i].size; - } + if (!pfree_head || !pused_head) + return NULL; + + pmax = pslot = pfree_head->next; + + /* search an available piece slot */ + while (pslot != NULL) { + if (pslot->size > pmax->size) + pmax = pslot; + pslot = pslot->next; } - if (index < 0) + + if (!pmax) return NULL; - *psize = best; - pfree[index].pid = current->pid; - pfree[index].flag = SRAM_SLT_ALLOCATED; - return addr; + *psize = pmax->size; + + return _sram_alloc(*psize, pfree_head, pused_head); } -/* L1 memory free function */ -static int _l1_sram_free(const void *addr, - struct l1_sram_piece *pfree, - int count) +/* SRAM free function */ +static int _sram_free(const void *addr, + struct sram_piece *pfree_head, + struct sram_piece *pused_head) { - int i, index = 0; + struct sram_piece *pslot, *plast, *pavail; + + if (!pfree_head || !pused_head) + return -1; /* search the relevant memory slot */ - for (i = 0; i < count; i++) { - if (pfree[i].paddr == addr) { - if (pfree[i].flag != SRAM_SLT_ALLOCATED) { - /* error log */ - return -1; - } - index = i; - break; - } + pslot = pused_head->next; + plast = pused_head; + + /* search an available piece slot */ + while (pslot != NULL && pslot->paddr != addr) { + plast = pslot; + pslot = pslot->next; } - if (i >= count) + + if (!pslot) return -1; - pfree[index].pid = 0; - pfree[index].flag = SRAM_SLT_FREE; - - /* link the next address slot */ - for (i = 0; i < count; i++) { - if (((pfree[index].paddr + pfree[index].size) == pfree[i].paddr) - && (pfree[i].flag == SRAM_SLT_FREE)) { - pfree[i].pid = 0; - pfree[i].flag = SRAM_SLT_NULL; - pfree[index].size += pfree[i].size; - pfree[index].flag = SRAM_SLT_FREE; - break; - } + plast->next = pslot->next; + pavail = pslot; + pavail->pid = 0; + + /* insert free pieces back to the free list */ + pslot = pfree_head->next; + plast = pfree_head; + + while (pslot != NULL && addr > pslot->paddr) { + plast = pslot; + pslot = pslot->next; + } + + if (plast != pfree_head && plast->paddr + plast->size == pavail->paddr) { + plast->size += pavail->size; + kmem_cache_free(sram_piece_cache, pavail); + } else { + pavail->next = plast; + plast->next = pavail; + plast = pavail; } - /* link the last address slot */ - for (i = 0; i < count; i++) { - if (((pfree[i].paddr + pfree[i].size) == pfree[index].paddr) && - (pfree[i].flag == SRAM_SLT_FREE)) { - pfree[index].flag = SRAM_SLT_NULL; - pfree[i].size += pfree[index].size; - break; - } + if (pslot && plast->paddr + plast->size == pslot->paddr) { + plast->size += pslot->size; + plast->next = pslot->next; + kmem_cache_free(sram_piece_cache, pslot); } return 0; @@ -273,6 +367,11 @@ int sram_free(const void *addr) && addr < (void *)(L1_DATA_B_START + L1_DATA_B_LENGTH)) return l1_data_B_sram_free(addr); #endif +#ifdef L2_LENGTH + else if (addr >= (void *)L2_START + && addr < (void *)(L2_START + L2_LENGTH)) + return l2_sram_free(addr); +#endif else return -1; } @@ -287,7 +386,8 @@ void *l1_data_A_sram_alloc(size_t size) spin_lock_irqsave(&l1_data_sram_lock, flags); #if L1_DATA_A_LENGTH != 0 - addr = _l1_sram_alloc(size, l1_data_A_sram, ARRAY_SIZE(l1_data_A_sram)); + addr = _sram_alloc(size, &free_l1_data_A_sram_head, + &used_l1_data_A_sram_head); #endif /* add mutex operation */ @@ -309,8 +409,8 @@ int l1_data_A_sram_free(const void *addr) spin_lock_irqsave(&l1_data_sram_lock, flags); #if L1_DATA_A_LENGTH != 0 - ret = _l1_sram_free(addr, - l1_data_A_sram, ARRAY_SIZE(l1_data_A_sram)); + ret = _sram_free(addr, &free_l1_data_A_sram_head, + &used_l1_data_A_sram_head); #else ret = -1; #endif @@ -331,7 +431,8 @@ void *l1_data_B_sram_alloc(size_t size) /* add mutex operation */ spin_lock_irqsave(&l1_data_sram_lock, flags); - addr = _l1_sram_alloc(size, l1_data_B_sram, ARRAY_SIZE(l1_data_B_sram)); + addr = _sram_alloc(size, &free_l1_data_B_sram_head, + &used_l1_data_B_sram_head); /* add mutex operation */ spin_unlock_irqrestore(&l1_data_sram_lock, flags); @@ -355,7 +456,8 @@ int l1_data_B_sram_free(const void *addr) /* add mutex operation */ spin_lock_irqsave(&l1_data_sram_lock, flags); - ret = _l1_sram_free(addr, l1_data_B_sram, ARRAY_SIZE(l1_data_B_sram)); + ret = _sram_free(addr, &free_l1_data_B_sram_head, + &used_l1_data_B_sram_head); /* add mutex operation */ spin_unlock_irqrestore(&l1_data_sram_lock, flags); @@ -408,7 +510,8 @@ void *l1_inst_sram_alloc(size_t size) /* add mutex operation */ spin_lock_irqsave(&l1_inst_sram_lock, flags); - addr = _l1_sram_alloc(size, l1_inst_sram, ARRAY_SIZE(l1_inst_sram)); + addr = _sram_alloc(size, &free_l1_inst_sram_head, + &used_l1_inst_sram_head); /* add mutex operation */ spin_unlock_irqrestore(&l1_inst_sram_lock, flags); @@ -432,7 +535,8 @@ int l1_inst_sram_free(const void *addr) /* add mutex operation */ spin_lock_irqsave(&l1_inst_sram_lock, flags); - ret = _l1_sram_free(addr, l1_inst_sram, ARRAY_SIZE(l1_inst_sram)); + ret = _sram_free(addr, &free_l1_inst_sram_head, + &used_l1_inst_sram_head); /* add mutex operation */ spin_unlock_irqrestore(&l1_inst_sram_lock, flags); @@ -453,7 +557,8 @@ void *l1sram_alloc(size_t size) /* add mutex operation */ spin_lock_irqsave(&l1sram_lock, flags); - addr = _l1_sram_alloc(size, l1_ssram, ARRAY_SIZE(l1_ssram)); + addr = _sram_alloc(size, &free_l1_ssram_head, + &used_l1_ssram_head); /* add mutex operation */ spin_unlock_irqrestore(&l1sram_lock, flags); @@ -470,7 +575,8 @@ void *l1sram_alloc_max(size_t *psize) /* add mutex operation */ spin_lock_irqsave(&l1sram_lock, flags); - addr = _l1_sram_alloc_max(l1_ssram, ARRAY_SIZE(l1_ssram), psize); + addr = _sram_alloc_max(&free_l1_ssram_head, + &used_l1_ssram_head, psize); /* add mutex operation */ spin_unlock_irqrestore(&l1sram_lock, flags); @@ -487,7 +593,8 @@ int l1sram_free(const void *addr) /* add mutex operation */ spin_lock_irqsave(&l1sram_lock, flags); - ret = _l1_sram_free(addr, l1_ssram, ARRAY_SIZE(l1_ssram)); + ret = _sram_free(addr, &free_l1_ssram_head, + &used_l1_ssram_head); /* add mutex operation */ spin_unlock_irqrestore(&l1sram_lock, flags); @@ -495,6 +602,64 @@ int l1sram_free(const void *addr) return ret; } +void *l2_sram_alloc(size_t size) +{ +#ifdef L2_LENGTH + unsigned flags; + void *addr; + + /* add mutex operation */ + spin_lock_irqsave(&l2_sram_lock, flags); + + addr = _sram_alloc(size, &free_l2_sram_head, + &used_l2_sram_head); + + /* add mutex operation */ + spin_unlock_irqrestore(&l2_sram_lock, flags); + + pr_debug("Allocated address in l2_sram_alloc is 0x%lx+0x%lx\n", + (long unsigned int)addr, size); + + return addr; +#else + return NULL; +#endif +} +EXPORT_SYMBOL(l2_sram_alloc); + +void *l2_sram_zalloc(size_t size) +{ + void *addr = l2_sram_alloc(size); + + if (addr) + memset(addr, 0x00, size); + + return addr; +} +EXPORT_SYMBOL(l2_sram_zalloc); + +int l2_sram_free(const void *addr) +{ +#ifdef L2_LENGTH + unsigned flags; + int ret; + + /* add mutex operation */ + spin_lock_irqsave(&l2_sram_lock, flags); + + ret = _sram_free(addr, &free_l2_sram_head, + &used_l2_sram_head); + + /* add mutex operation */ + spin_unlock_irqrestore(&l2_sram_lock, flags); + + return ret; +#else + return -1; +#endif +} +EXPORT_SYMBOL(l2_sram_free); + int sram_free_with_lsl(const void *addr) { struct sram_list_struct *lsl, **tmp; @@ -533,6 +698,9 @@ void *sram_alloc_with_lsl(size_t size, unsigned long flags) if (addr == NULL && (flags & L1_DATA_B_SRAM)) addr = l1_data_B_sram_alloc(size); + if (addr == NULL && (flags & L2_SRAM)) + addr = l2_sram_alloc(size); + if (addr == NULL) { kfree(lsl); return NULL; @@ -549,49 +717,80 @@ EXPORT_SYMBOL(sram_alloc_with_lsl); /* Once we get a real allocator, we'll throw all of this away. * Until then, we need some sort of visibility into the L1 alloc. */ -static void _l1sram_proc_read(char *buf, int *len, const char *desc, - struct l1_sram_piece *pfree, const int array_size) +/* Need to keep line of output the same. Currently, that is 44 bytes + * (including newline). + */ +static int _sram_proc_read(char *buf, int *len, int count, const char *desc, + struct sram_piece *pfree_head, + struct sram_piece *pused_head) { - int i; - - *len += sprintf(&buf[*len], "--- L1 %-14s Size PID State\n", desc); - for (i = 0; i < array_size; ++i) { - const char *alloc_type; - switch (pfree[i].flag) { - case SRAM_SLT_NULL: alloc_type = "NULL"; break; - case SRAM_SLT_FREE: alloc_type = "FREE"; break; - case SRAM_SLT_ALLOCATED: alloc_type = "ALLOCATED"; break; - default: alloc_type = "????"; break; - } - *len += sprintf(&buf[*len], "%p-%p %8i %4i %s\n", - pfree[i].paddr, pfree[i].paddr + pfree[i].size, - pfree[i].size, pfree[i].pid, alloc_type); + struct sram_piece *pslot; + + if (!pfree_head || !pused_head) + return -1; + + *len += sprintf(&buf[*len], "--- SRAM %-14s Size PID State \n", desc); + + /* search the relevant memory slot */ + pslot = pused_head->next; + + while (pslot != NULL) { + *len += sprintf(&buf[*len], "%p-%p %10i %5i %-10s\n", + pslot->paddr, pslot->paddr + pslot->size, + pslot->size, pslot->pid, "ALLOCATED"); + + pslot = pslot->next; } + + pslot = pfree_head->next; + + while (pslot != NULL) { + *len += sprintf(&buf[*len], "%p-%p %10i %5i %-10s\n", + pslot->paddr, pslot->paddr + pslot->size, + pslot->size, pslot->pid, "FREE"); + + pslot = pslot->next; + } + + return 0; } -static int l1sram_proc_read(char *buf, char **start, off_t offset, int count, +static int sram_proc_read(char *buf, char **start, off_t offset, int count, int *eof, void *data) { int len = 0; - _l1sram_proc_read(buf, &len, "Scratchpad", - l1_ssram, ARRAY_SIZE(l1_ssram)); + if (_sram_proc_read(buf, &len, count, "Scratchpad", + &free_l1_ssram_head, &used_l1_ssram_head)) + goto not_done; #if L1_DATA_A_LENGTH != 0 - _l1sram_proc_read(buf, &len, "Data A", - l1_data_A_sram, ARRAY_SIZE(l1_data_A_sram)); + if (_sram_proc_read(buf, &len, count, "L1 Data A", + &free_l1_data_A_sram_head, + &used_l1_data_A_sram_head)) + goto not_done; #endif #if L1_DATA_B_LENGTH != 0 - _l1sram_proc_read(buf, &len, "Data B", - l1_data_B_sram, ARRAY_SIZE(l1_data_B_sram)); + if (_sram_proc_read(buf, &len, count, "L1 Data B", + &free_l1_data_B_sram_head, + &used_l1_data_B_sram_head)) + goto not_done; #endif #if L1_CODE_LENGTH != 0 - _l1sram_proc_read(buf, &len, "Instruction", - l1_inst_sram, ARRAY_SIZE(l1_inst_sram)); + if (_sram_proc_read(buf, &len, count, "L1 Instruction", + &free_l1_inst_sram_head, &used_l1_inst_sram_head)) + goto not_done; +#endif +#ifdef L2_LENGTH + if (_sram_proc_read(buf, &len, count, "L2", + &free_l2_sram_head, &used_l2_sram_head)) + goto not_done; #endif + *eof = 1; + not_done: return len; } -static int __init l1sram_proc_init(void) +static int __init sram_proc_init(void) { struct proc_dir_entry *ptr; ptr = create_proc_entry("sram", S_IFREG | S_IRUGO, NULL); @@ -600,8 +799,8 @@ static int __init l1sram_proc_init(void) return -1; } ptr->owner = THIS_MODULE; - ptr->read_proc = l1sram_proc_read; + ptr->read_proc = sram_proc_read; return 0; } -late_initcall(l1sram_proc_init); +late_initcall(sram_proc_init); #endif diff --git a/arch/blackfin/mm/blackfin_sram.h b/arch/blackfin/mm/blackfin_sram.h index 0fb73b78dd60..8cb0945563f9 100644 --- a/arch/blackfin/mm/blackfin_sram.h +++ b/arch/blackfin/mm/blackfin_sram.h @@ -30,9 +30,7 @@ #ifndef __BLACKFIN_SRAM_H__ #define __BLACKFIN_SRAM_H__ -extern void l1sram_init(void); -extern void l1_inst_sram_init(void); -extern void l1_data_sram_init(void); +extern void bfin_sram_init(void); extern void *l1sram_alloc(size_t); #endif diff --git a/arch/blackfin/mm/init.c b/arch/blackfin/mm/init.c index 4d5326ee9a85..bc240abb8745 100644 --- a/arch/blackfin/mm/init.c +++ b/arch/blackfin/mm/init.c @@ -137,11 +137,14 @@ void __init mem_init(void) "(%uk init code, %uk kernel code, %uk data, %uk dma, %uk reserved)\n", (unsigned long) freepages << (PAGE_SHIFT-10), _ramend >> 10, initk, codek, datak, DMA_UNCACHED_REGION >> 10, (reservedpages << (PAGE_SHIFT-10))); +} + +static int __init sram_init(void) +{ + unsigned long tmp; /* Initialize the blackfin L1 Memory. */ - l1sram_init(); - l1_data_sram_init(); - l1_inst_sram_init(); + bfin_sram_init(); /* Allocate this once; never free it. We assume this gives us a pointer to the start of L1 scratchpad memory; panic if it @@ -152,7 +155,10 @@ void __init mem_init(void) tmp, (unsigned long)L1_SCRATCH_TASK_INFO); panic("No L1, time to give up\n"); } + + return 0; } +pure_initcall(sram_init); static void __init free_init_pages(const char *what, unsigned long begin, unsigned long end) { |