aboutsummaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/blackfin/mm/blackfin_sram.c395
-rw-r--r--arch/blackfin/mm/blackfin_sram.h4
-rw-r--r--arch/blackfin/mm/init.c12
3 files changed, 248 insertions, 163 deletions
diff --git a/arch/blackfin/mm/blackfin_sram.c b/arch/blackfin/mm/blackfin_sram.c
index 8f6fdc245330..b58cf196d7cc 100644
--- a/arch/blackfin/mm/blackfin_sram.c
+++ b/arch/blackfin/mm/blackfin_sram.c
@@ -41,215 +41,276 @@
41#include <asm/blackfin.h> 41#include <asm/blackfin.h>
42#include "blackfin_sram.h" 42#include "blackfin_sram.h"
43 43
44spinlock_t l1sram_lock, l1_data_sram_lock, l1_inst_sram_lock; 44static spinlock_t l1sram_lock, l1_data_sram_lock, l1_inst_sram_lock;
45
46#if CONFIG_L1_MAX_PIECE < 16
47#undef CONFIG_L1_MAX_PIECE
48#define CONFIG_L1_MAX_PIECE 16
49#endif
50
51#if CONFIG_L1_MAX_PIECE > 1024
52#undef CONFIG_L1_MAX_PIECE
53#define CONFIG_L1_MAX_PIECE 1024
54#endif
55
56#define SRAM_SLT_NULL 0
57#define SRAM_SLT_FREE 1
58#define SRAM_SLT_ALLOCATED 2
59 45
60/* the data structure for L1 scratchpad and DATA SRAM */ 46/* the data structure for L1 scratchpad and DATA SRAM */
61struct l1_sram_piece { 47struct sram_piece {
62 void *paddr; 48 void *paddr;
63 int size; 49 int size;
64 int flag;
65 pid_t pid; 50 pid_t pid;
51 struct sram_piece *next;
66}; 52};
67 53
68static struct l1_sram_piece l1_ssram[CONFIG_L1_MAX_PIECE]; 54static struct sram_piece free_l1_ssram_head, used_l1_ssram_head;
69 55
70#if L1_DATA_A_LENGTH != 0 56#if L1_DATA_A_LENGTH != 0
71static struct l1_sram_piece l1_data_A_sram[CONFIG_L1_MAX_PIECE]; 57static struct sram_piece free_l1_data_A_sram_head, used_l1_data_A_sram_head;
72#endif 58#endif
73 59
74#if L1_DATA_B_LENGTH != 0 60#if L1_DATA_B_LENGTH != 0
75static struct l1_sram_piece l1_data_B_sram[CONFIG_L1_MAX_PIECE]; 61static struct sram_piece free_l1_data_B_sram_head, used_l1_data_B_sram_head;
76#endif 62#endif
77 63
78#if L1_CODE_LENGTH != 0 64#if L1_CODE_LENGTH != 0
79static struct l1_sram_piece l1_inst_sram[CONFIG_L1_MAX_PIECE]; 65static struct sram_piece free_l1_inst_sram_head, used_l1_inst_sram_head;
80#endif 66#endif
81 67
68static struct kmem_cache *sram_piece_cache;
69
82/* L1 Scratchpad SRAM initialization function */ 70/* L1 Scratchpad SRAM initialization function */
83void __init l1sram_init(void) 71static void __init l1sram_init(void)
84{ 72{
85 printk(KERN_INFO "Blackfin Scratchpad data SRAM: %d KB\n", 73 free_l1_ssram_head.next =
86 L1_SCRATCH_LENGTH >> 10); 74 kmem_cache_alloc(sram_piece_cache, GFP_KERNEL);
75 if (!free_l1_ssram_head.next) {
76 printk(KERN_INFO"Fail to initialize Scratchpad data SRAM.\n");
77 return;
78 }
87 79
88 memset(&l1_ssram, 0x00, sizeof(l1_ssram)); 80 free_l1_ssram_head.next->paddr = (void *)L1_SCRATCH_START;
89 l1_ssram[0].paddr = (void *)L1_SCRATCH_START; 81 free_l1_ssram_head.next->size = L1_SCRATCH_LENGTH;
90 l1_ssram[0].size = L1_SCRATCH_LENGTH; 82 free_l1_ssram_head.next->pid = 0;
91 l1_ssram[0].flag = SRAM_SLT_FREE; 83 free_l1_ssram_head.next->next = NULL;
84
85 used_l1_ssram_head.next = NULL;
92 86
93 /* mutex initialize */ 87 /* mutex initialize */
94 spin_lock_init(&l1sram_lock); 88 spin_lock_init(&l1sram_lock);
89
90 printk(KERN_INFO "Blackfin Scratchpad data SRAM: %d KB\n",
91 L1_SCRATCH_LENGTH >> 10);
95} 92}
96 93
97void __init l1_data_sram_init(void) 94static void __init l1_data_sram_init(void)
98{ 95{
99#if L1_DATA_A_LENGTH != 0 96#if L1_DATA_A_LENGTH != 0
100 memset(&l1_data_A_sram, 0x00, sizeof(l1_data_A_sram)); 97 free_l1_data_A_sram_head.next =
101 l1_data_A_sram[0].paddr = (void *)L1_DATA_A_START + 98 kmem_cache_alloc(sram_piece_cache, GFP_KERNEL);
102 (_ebss_l1 - _sdata_l1); 99 if (!free_l1_data_A_sram_head.next) {
103 l1_data_A_sram[0].size = L1_DATA_A_LENGTH - (_ebss_l1 - _sdata_l1); 100 printk(KERN_INFO"Fail to initialize Data A SRAM.\n");
104 l1_data_A_sram[0].flag = SRAM_SLT_FREE; 101 return;
102 }
103
104 free_l1_data_A_sram_head.next->paddr =
105 (void *)L1_DATA_A_START + (_ebss_l1 - _sdata_l1);
106 free_l1_data_A_sram_head.next->size =
107 L1_DATA_A_LENGTH - (_ebss_l1 - _sdata_l1);
108 free_l1_data_A_sram_head.next->pid = 0;
109 free_l1_data_A_sram_head.next->next = NULL;
110
111 used_l1_data_A_sram_head.next = NULL;
105 112
106 printk(KERN_INFO "Blackfin Data A SRAM: %d KB (%d KB free)\n", 113 printk(KERN_INFO "Blackfin Data A SRAM: %d KB (%d KB free)\n",
107 L1_DATA_A_LENGTH >> 10, l1_data_A_sram[0].size >> 10); 114 L1_DATA_A_LENGTH >> 10,
115 free_l1_data_A_sram_head.next->size >> 10);
108#endif 116#endif
109#if L1_DATA_B_LENGTH != 0 117#if L1_DATA_B_LENGTH != 0
110 memset(&l1_data_B_sram, 0x00, sizeof(l1_data_B_sram)); 118 free_l1_data_B_sram_head.next =
111 l1_data_B_sram[0].paddr = (void *)L1_DATA_B_START + 119 kmem_cache_alloc(sram_piece_cache, GFP_KERNEL);
112 (_ebss_b_l1 - _sdata_b_l1); 120 if (!free_l1_data_B_sram_head.next) {
113 l1_data_B_sram[0].size = L1_DATA_B_LENGTH - (_ebss_b_l1 - _sdata_b_l1); 121 printk(KERN_INFO"Fail to initialize Data B SRAM.\n");
114 l1_data_B_sram[0].flag = SRAM_SLT_FREE; 122 return;
123 }
124
125 free_l1_data_B_sram_head.next->paddr =
126 (void *)L1_DATA_B_START + (_ebss_b_l1 - _sdata_b_l1);
127 free_l1_data_B_sram_head.next->size =
128 L1_DATA_B_LENGTH - (_ebss_b_l1 - _sdata_b_l1);
129 free_l1_data_B_sram_head.next->pid = 0;
130 free_l1_data_B_sram_head.next->next = NULL;
131
132 used_l1_data_B_sram_head.next = NULL;
115 133
116 printk(KERN_INFO "Blackfin Data B SRAM: %d KB (%d KB free)\n", 134 printk(KERN_INFO "Blackfin Data B SRAM: %d KB (%d KB free)\n",
117 L1_DATA_B_LENGTH >> 10, l1_data_B_sram[0].size >> 10); 135 L1_DATA_B_LENGTH >> 10,
136 free_l1_data_B_sram_head.next->size >> 10);
118#endif 137#endif
119 138
120 /* mutex initialize */ 139 /* mutex initialize */
121 spin_lock_init(&l1_data_sram_lock); 140 spin_lock_init(&l1_data_sram_lock);
122} 141}
123 142
124void __init l1_inst_sram_init(void) 143static void __init l1_inst_sram_init(void)
125{ 144{
126#if L1_CODE_LENGTH != 0 145#if L1_CODE_LENGTH != 0
127 memset(&l1_inst_sram, 0x00, sizeof(l1_inst_sram)); 146 free_l1_inst_sram_head.next =
128 l1_inst_sram[0].paddr = (void *)L1_CODE_START + (_etext_l1 - _stext_l1); 147 kmem_cache_alloc(sram_piece_cache, GFP_KERNEL);
129 l1_inst_sram[0].size = L1_CODE_LENGTH - (_etext_l1 - _stext_l1); 148 if (!free_l1_inst_sram_head.next) {
130 l1_inst_sram[0].flag = SRAM_SLT_FREE; 149 printk(KERN_INFO"Fail to initialize Instruction SRAM.\n");
150 return;
151 }
152
153 free_l1_inst_sram_head.next->paddr =
154 (void *)L1_CODE_START + (_etext_l1 - _stext_l1);
155 free_l1_inst_sram_head.next->size =
156 L1_CODE_LENGTH - (_etext_l1 - _stext_l1);
157 free_l1_inst_sram_head.next->pid = 0;
158 free_l1_inst_sram_head.next->next = NULL;
159
160 used_l1_inst_sram_head.next = NULL;
131 161
132 printk(KERN_INFO "Blackfin Instruction SRAM: %d KB (%d KB free)\n", 162 printk(KERN_INFO "Blackfin Instruction SRAM: %d KB (%d KB free)\n",
133 L1_CODE_LENGTH >> 10, l1_inst_sram[0].size >> 10); 163 L1_CODE_LENGTH >> 10,
164 free_l1_inst_sram_head.next->size >> 10);
134#endif 165#endif
135 166
136 /* mutex initialize */ 167 /* mutex initialize */
137 spin_lock_init(&l1_inst_sram_lock); 168 spin_lock_init(&l1_inst_sram_lock);
138} 169}
139 170
171void __init bfin_sram_init(void)
172{
173 sram_piece_cache = kmem_cache_create("sram_piece_cache",
174 sizeof(struct sram_piece),
175 0, SLAB_PANIC, NULL);
176
177 l1sram_init();
178 l1_data_sram_init();
179 l1_inst_sram_init();
180}
181
140/* L1 memory allocate function */ 182/* L1 memory allocate function */
141static void *_l1_sram_alloc(size_t size, struct l1_sram_piece *pfree, int count) 183static void *_l1_sram_alloc(size_t size, struct sram_piece *pfree_head,
184 struct sram_piece *pused_head)
142{ 185{
143 int i, index = 0; 186 struct sram_piece *pslot, *plast, *pavail;
144 void *addr = NULL;
145 187
146 if (size <= 0) 188 if (size <= 0 || !pfree_head || !pused_head)
147 return NULL; 189 return NULL;
148 190
149 /* Align the size */ 191 /* Align the size */
150 size = (size + 3) & ~3; 192 size = (size + 3) & ~3;
151 193
152 /* not use the good method to match the best slot !!! */ 194 pslot = pfree_head->next;
153 /* search an available memory slot */ 195 plast = pfree_head;
154 for (i = 0; i < count; i++) { 196
155 if ((pfree[i].flag == SRAM_SLT_FREE) 197 /* search an available piece slot */
156 && (pfree[i].size >= size)) { 198 while (pslot != NULL && size > pslot->size) {
157 addr = pfree[i].paddr; 199 plast = pslot;
158 pfree[i].flag = SRAM_SLT_ALLOCATED; 200 pslot = pslot->next;
159 pfree[i].pid = current->pid;
160 index = i;
161 break;
162 }
163 } 201 }
164 if (i >= count) 202
203 if (!pslot)
165 return NULL; 204 return NULL;
166 205
167 /* updated the NULL memory slot !!! */ 206 if (pslot->size == size) {
168 if (pfree[i].size > size) { 207 plast->next = pslot->next;
169 for (i = 0; i < count; i++) { 208 pavail = pslot;
170 if (pfree[i].flag == SRAM_SLT_NULL) { 209 } else {
171 pfree[i].pid = 0; 210 pavail = kmem_cache_alloc(sram_piece_cache, GFP_KERNEL);
172 pfree[i].flag = SRAM_SLT_FREE; 211
173 pfree[i].paddr = addr + size; 212 if (!pavail)
174 pfree[i].size = pfree[index].size - size; 213 return NULL;
175 pfree[index].size = size; 214
176 break; 215 pavail->paddr = pslot->paddr;
177 } 216 pavail->size = size;
178 } 217 pslot->paddr += size;
218 pslot->size -= size;
179 } 219 }
180 220
181 return addr; 221 pavail->pid = current->pid;
222
223 pslot = pused_head->next;
224 plast = pused_head;
225
226 /* insert new piece into used piece list !!! */
227 while (pslot != NULL && pavail->paddr < pslot->paddr) {
228 plast = pslot;
229 pslot = pslot->next;
230 }
231
232 pavail->next = pslot;
233 plast->next = pavail;
234
235 return pavail->paddr;
182} 236}
183 237
184/* Allocate the largest available block. */ 238/* Allocate the largest available block. */
185static void *_l1_sram_alloc_max(struct l1_sram_piece *pfree, int count, 239static void *_l1_sram_alloc_max(struct sram_piece *pfree_head,
240 struct sram_piece *pused_head,
186 unsigned long *psize) 241 unsigned long *psize)
187{ 242{
188 unsigned long best = 0; 243 struct sram_piece *pslot, *pmax;
189 int i, index = -1; 244
190 void *addr = NULL; 245 if (!pfree_head || !pused_head)
246 return NULL;
247
248 pmax = pslot = pfree_head->next;
191 249
192 /* search an available memory slot */ 250 /* search an available piece slot */
193 for (i = 0; i < count; i++) { 251 while (pslot != NULL) {
194 if (pfree[i].flag == SRAM_SLT_FREE && pfree[i].size > best) { 252 if (pslot->size > pmax->size)
195 addr = pfree[i].paddr; 253 pmax = pslot;
196 index = i; 254 pslot = pslot->next;
197 best = pfree[i].size;
198 }
199 } 255 }
200 if (index < 0) 256
257 if (!pmax)
201 return NULL; 258 return NULL;
202 *psize = best;
203 259
204 pfree[index].pid = current->pid; 260 *psize = pmax->size;
205 pfree[index].flag = SRAM_SLT_ALLOCATED; 261
206 return addr; 262 return _l1_sram_alloc(*psize, pfree_head, pused_head);
207} 263}
208 264
209/* L1 memory free function */ 265/* L1 memory free function */
210static int _l1_sram_free(const void *addr, 266static int _l1_sram_free(const void *addr,
211 struct l1_sram_piece *pfree, 267 struct sram_piece *pfree_head,
212 int count) 268 struct sram_piece *pused_head)
213{ 269{
214 int i, index = 0; 270 struct sram_piece *pslot, *plast, *pavail;
271
272 if (!pfree_head || !pused_head)
273 return -1;
215 274
216 /* search the relevant memory slot */ 275 /* search the relevant memory slot */
217 for (i = 0; i < count; i++) { 276 pslot = pused_head->next;
218 if (pfree[i].paddr == addr) { 277 plast = pused_head;
219 if (pfree[i].flag != SRAM_SLT_ALLOCATED) { 278
220 /* error log */ 279 /* search an available piece slot */
221 return -1; 280 while (pslot != NULL && pslot->paddr != addr) {
222 } 281 plast = pslot;
223 index = i; 282 pslot = pslot->next;
224 break;
225 }
226 } 283 }
227 if (i >= count) 284
285 if (!pslot)
228 return -1; 286 return -1;
229 287
230 pfree[index].pid = 0; 288 plast->next = pslot->next;
231 pfree[index].flag = SRAM_SLT_FREE; 289 pavail = pslot;
232 290 pavail->pid = 0;
233 /* link the next address slot */ 291
234 for (i = 0; i < count; i++) { 292 /* insert free pieces back to the free list */
235 if (((pfree[index].paddr + pfree[index].size) == pfree[i].paddr) 293 pslot = pfree_head->next;
236 && (pfree[i].flag == SRAM_SLT_FREE)) { 294 plast = pfree_head;
237 pfree[i].pid = 0; 295
238 pfree[i].flag = SRAM_SLT_NULL; 296 while (pslot != NULL && addr > pslot->paddr) {
239 pfree[index].size += pfree[i].size; 297 plast = pslot;
240 pfree[index].flag = SRAM_SLT_FREE; 298 pslot = pslot->next;
241 break; 299 }
242 } 300
301 if (plast != pfree_head && plast->paddr + plast->size == pavail->paddr) {
302 plast->size += pavail->size;
303 kmem_cache_free(sram_piece_cache, pavail);
304 } else {
305 pavail->next = plast;
306 plast->next = pavail;
307 plast = pavail;
243 } 308 }
244 309
245 /* link the last address slot */ 310 if (pslot && plast->paddr + plast->size == pslot->paddr) {
246 for (i = 0; i < count; i++) { 311 plast->size += pslot->size;
247 if (((pfree[i].paddr + pfree[i].size) == pfree[index].paddr) && 312 plast->next = pslot->next;
248 (pfree[i].flag == SRAM_SLT_FREE)) { 313 kmem_cache_free(sram_piece_cache, pslot);
249 pfree[index].flag = SRAM_SLT_NULL;
250 pfree[i].size += pfree[index].size;
251 break;
252 }
253 } 314 }
254 315
255 return 0; 316 return 0;
@@ -287,7 +348,8 @@ void *l1_data_A_sram_alloc(size_t size)
287 spin_lock_irqsave(&l1_data_sram_lock, flags); 348 spin_lock_irqsave(&l1_data_sram_lock, flags);
288 349
289#if L1_DATA_A_LENGTH != 0 350#if L1_DATA_A_LENGTH != 0
290 addr = _l1_sram_alloc(size, l1_data_A_sram, ARRAY_SIZE(l1_data_A_sram)); 351 addr = _l1_sram_alloc(size, &free_l1_data_A_sram_head,
352 &used_l1_data_A_sram_head);
291#endif 353#endif
292 354
293 /* add mutex operation */ 355 /* add mutex operation */
@@ -309,8 +371,8 @@ int l1_data_A_sram_free(const void *addr)
309 spin_lock_irqsave(&l1_data_sram_lock, flags); 371 spin_lock_irqsave(&l1_data_sram_lock, flags);
310 372
311#if L1_DATA_A_LENGTH != 0 373#if L1_DATA_A_LENGTH != 0
312 ret = _l1_sram_free(addr, 374 ret = _l1_sram_free(addr, &free_l1_data_A_sram_head,
313 l1_data_A_sram, ARRAY_SIZE(l1_data_A_sram)); 375 &used_l1_data_A_sram_head);
314#else 376#else
315 ret = -1; 377 ret = -1;
316#endif 378#endif
@@ -331,7 +393,8 @@ void *l1_data_B_sram_alloc(size_t size)
331 /* add mutex operation */ 393 /* add mutex operation */
332 spin_lock_irqsave(&l1_data_sram_lock, flags); 394 spin_lock_irqsave(&l1_data_sram_lock, flags);
333 395
334 addr = _l1_sram_alloc(size, l1_data_B_sram, ARRAY_SIZE(l1_data_B_sram)); 396 addr = _l1_sram_alloc(size, &free_l1_data_B_sram_head,
397 &used_l1_data_B_sram_head);
335 398
336 /* add mutex operation */ 399 /* add mutex operation */
337 spin_unlock_irqrestore(&l1_data_sram_lock, flags); 400 spin_unlock_irqrestore(&l1_data_sram_lock, flags);
@@ -355,7 +418,8 @@ int l1_data_B_sram_free(const void *addr)
355 /* add mutex operation */ 418 /* add mutex operation */
356 spin_lock_irqsave(&l1_data_sram_lock, flags); 419 spin_lock_irqsave(&l1_data_sram_lock, flags);
357 420
358 ret = _l1_sram_free(addr, l1_data_B_sram, ARRAY_SIZE(l1_data_B_sram)); 421 ret = _l1_sram_free(addr, &free_l1_data_B_sram_head,
422 &used_l1_data_B_sram_head);
359 423
360 /* add mutex operation */ 424 /* add mutex operation */
361 spin_unlock_irqrestore(&l1_data_sram_lock, flags); 425 spin_unlock_irqrestore(&l1_data_sram_lock, flags);
@@ -408,7 +472,8 @@ void *l1_inst_sram_alloc(size_t size)
408 /* add mutex operation */ 472 /* add mutex operation */
409 spin_lock_irqsave(&l1_inst_sram_lock, flags); 473 spin_lock_irqsave(&l1_inst_sram_lock, flags);
410 474
411 addr = _l1_sram_alloc(size, l1_inst_sram, ARRAY_SIZE(l1_inst_sram)); 475 addr = _l1_sram_alloc(size, &free_l1_inst_sram_head,
476 &used_l1_inst_sram_head);
412 477
413 /* add mutex operation */ 478 /* add mutex operation */
414 spin_unlock_irqrestore(&l1_inst_sram_lock, flags); 479 spin_unlock_irqrestore(&l1_inst_sram_lock, flags);
@@ -432,7 +497,8 @@ int l1_inst_sram_free(const void *addr)
432 /* add mutex operation */ 497 /* add mutex operation */
433 spin_lock_irqsave(&l1_inst_sram_lock, flags); 498 spin_lock_irqsave(&l1_inst_sram_lock, flags);
434 499
435 ret = _l1_sram_free(addr, l1_inst_sram, ARRAY_SIZE(l1_inst_sram)); 500 ret = _l1_sram_free(addr, &free_l1_inst_sram_head,
501 &used_l1_inst_sram_head);
436 502
437 /* add mutex operation */ 503 /* add mutex operation */
438 spin_unlock_irqrestore(&l1_inst_sram_lock, flags); 504 spin_unlock_irqrestore(&l1_inst_sram_lock, flags);
@@ -453,7 +519,8 @@ void *l1sram_alloc(size_t size)
453 /* add mutex operation */ 519 /* add mutex operation */
454 spin_lock_irqsave(&l1sram_lock, flags); 520 spin_lock_irqsave(&l1sram_lock, flags);
455 521
456 addr = _l1_sram_alloc(size, l1_ssram, ARRAY_SIZE(l1_ssram)); 522 addr = _l1_sram_alloc(size, &free_l1_ssram_head,
523 &used_l1_ssram_head);
457 524
458 /* add mutex operation */ 525 /* add mutex operation */
459 spin_unlock_irqrestore(&l1sram_lock, flags); 526 spin_unlock_irqrestore(&l1sram_lock, flags);
@@ -470,7 +537,8 @@ void *l1sram_alloc_max(size_t *psize)
470 /* add mutex operation */ 537 /* add mutex operation */
471 spin_lock_irqsave(&l1sram_lock, flags); 538 spin_lock_irqsave(&l1sram_lock, flags);
472 539
473 addr = _l1_sram_alloc_max(l1_ssram, ARRAY_SIZE(l1_ssram), psize); 540 addr = _l1_sram_alloc_max(&free_l1_ssram_head,
541 &used_l1_ssram_head, psize);
474 542
475 /* add mutex operation */ 543 /* add mutex operation */
476 spin_unlock_irqrestore(&l1sram_lock, flags); 544 spin_unlock_irqrestore(&l1sram_lock, flags);
@@ -487,7 +555,8 @@ int l1sram_free(const void *addr)
487 /* add mutex operation */ 555 /* add mutex operation */
488 spin_lock_irqsave(&l1sram_lock, flags); 556 spin_lock_irqsave(&l1sram_lock, flags);
489 557
490 ret = _l1_sram_free(addr, l1_ssram, ARRAY_SIZE(l1_ssram)); 558 ret = _l1_sram_free(addr, &free_l1_ssram_head,
559 &used_l1_ssram_head);
491 560
492 /* add mutex operation */ 561 /* add mutex operation */
493 spin_unlock_irqrestore(&l1sram_lock, flags); 562 spin_unlock_irqrestore(&l1sram_lock, flags);
@@ -553,28 +622,38 @@ EXPORT_SYMBOL(sram_alloc_with_lsl);
553 * (including newline). 622 * (including newline).
554 */ 623 */
555static int _l1sram_proc_read(char *buf, int *len, int count, const char *desc, 624static int _l1sram_proc_read(char *buf, int *len, int count, const char *desc,
556 struct l1_sram_piece *pfree, const int array_size) 625 struct sram_piece *pfree_head,
626 struct sram_piece *pused_head)
557{ 627{
558 int i; 628 struct sram_piece *pslot;
629
630 if (!pfree_head || !pused_head)
631 return -1;
559 632
560 *len += sprintf(&buf[*len], "--- L1 %-14s Size PID State \n", desc); 633 *len += sprintf(&buf[*len], "--- L1 %-14s Size PID State \n", desc);
561 for (i = 0; i < array_size && *len < count; ++i) { 634
562 const char *alloc_type; 635 /* search the relevant memory slot */
563 switch (pfree[i].flag) { 636 pslot = pused_head->next;
564 case SRAM_SLT_NULL: alloc_type = "NULL"; break; 637
565 case SRAM_SLT_FREE: alloc_type = "FREE"; break; 638 while (pslot != NULL) {
566 case SRAM_SLT_ALLOCATED: alloc_type = "ALLOCATED"; break;
567 default: alloc_type = "????"; break;
568 }
569 /* if we've got a lot of space to cover, omit things */
570 if ((PAGE_SIZE - 1024) < (CONFIG_L1_MAX_PIECE + 1) * 4 * 44 &&
571 pfree[i].size == 0)
572 continue;
573 *len += sprintf(&buf[*len], "%p-%p %8i %5i %-10s\n", 639 *len += sprintf(&buf[*len], "%p-%p %8i %5i %-10s\n",
574 pfree[i].paddr, pfree[i].paddr + pfree[i].size, 640 pslot->paddr, pslot->paddr + pslot->size,
575 pfree[i].size, pfree[i].pid, alloc_type); 641 pslot->size, pslot->pid, "ALLOCATED");
642
643 pslot = pslot->next;
644 }
645
646 pslot = pfree_head->next;
647
648 while (pslot != NULL) {
649 *len += sprintf(&buf[*len], "%p-%p %8i %5i %-10s\n",
650 pslot->paddr, pslot->paddr + pslot->size,
651 pslot->size, pslot->pid, "FREE");
652
653 pslot = pslot->next;
576 } 654 }
577 return (i != array_size); 655
656 return 0;
578} 657}
579static int l1sram_proc_read(char *buf, char **start, off_t offset, int count, 658static int l1sram_proc_read(char *buf, char **start, off_t offset, int count,
580 int *eof, void *data) 659 int *eof, void *data)
@@ -582,21 +661,23 @@ static int l1sram_proc_read(char *buf, char **start, off_t offset, int count,
582 int len = 0; 661 int len = 0;
583 662
584 if (_l1sram_proc_read(buf, &len, count, "Scratchpad", 663 if (_l1sram_proc_read(buf, &len, count, "Scratchpad",
585 l1_ssram, ARRAY_SIZE(l1_ssram))) 664 &free_l1_ssram_head, &used_l1_ssram_head))
586 goto not_done; 665 goto not_done;
587#if L1_DATA_A_LENGTH != 0 666#if L1_DATA_A_LENGTH != 0
588 if (_l1sram_proc_read(buf, &len, count, "Data A", 667 if (_l1sram_proc_read(buf, &len, count, "Data A",
589 l1_data_A_sram, ARRAY_SIZE(l1_data_A_sram))) 668 &free_l1_data_A_sram_head,
669 &used_l1_data_A_sram_head))
590 goto not_done; 670 goto not_done;
591#endif 671#endif
592#if L1_DATA_B_LENGTH != 0 672#if L1_DATA_B_LENGTH != 0
593 if (_l1sram_proc_read(buf, &len, count, "Data B", 673 if (_l1sram_proc_read(buf, &len, count, "Data B",
594 l1_data_B_sram, ARRAY_SIZE(l1_data_B_sram))) 674 &free_l1_data_B_sram_head,
675 &used_l1_data_B_sram_head))
595 goto not_done; 676 goto not_done;
596#endif 677#endif
597#if L1_CODE_LENGTH != 0 678#if L1_CODE_LENGTH != 0
598 if (_l1sram_proc_read(buf, &len, count, "Instruction", 679 if (_l1sram_proc_read(buf, &len, count, "Instruction",
599 l1_inst_sram, ARRAY_SIZE(l1_inst_sram))) 680 &free_l1_inst_sram_head, &used_l1_inst_sram_head))
600 goto not_done; 681 goto not_done;
601#endif 682#endif
602 683
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 @@
30#ifndef __BLACKFIN_SRAM_H__ 30#ifndef __BLACKFIN_SRAM_H__
31#define __BLACKFIN_SRAM_H__ 31#define __BLACKFIN_SRAM_H__
32 32
33extern void l1sram_init(void); 33extern void bfin_sram_init(void);
34extern void l1_inst_sram_init(void);
35extern void l1_data_sram_init(void);
36extern void *l1sram_alloc(size_t); 34extern void *l1sram_alloc(size_t);
37 35
38#endif 36#endif
diff --git a/arch/blackfin/mm/init.c b/arch/blackfin/mm/init.c
index ec3141fefd20..4aab21f44096 100644
--- a/arch/blackfin/mm/init.c
+++ b/arch/blackfin/mm/init.c
@@ -164,11 +164,14 @@ void __init mem_init(void)
164 "(%uk init code, %uk kernel code, %uk data, %uk dma, %uk reserved)\n", 164 "(%uk init code, %uk kernel code, %uk data, %uk dma, %uk reserved)\n",
165 (unsigned long) freepages << (PAGE_SHIFT-10), _ramend >> 10, 165 (unsigned long) freepages << (PAGE_SHIFT-10), _ramend >> 10,
166 initk, codek, datak, DMA_UNCACHED_REGION >> 10, (reservedpages << (PAGE_SHIFT-10))); 166 initk, codek, datak, DMA_UNCACHED_REGION >> 10, (reservedpages << (PAGE_SHIFT-10)));
167}
168
169static int __init sram_init(void)
170{
171 unsigned long tmp;
167 172
168 /* Initialize the blackfin L1 Memory. */ 173 /* Initialize the blackfin L1 Memory. */
169 l1sram_init(); 174 bfin_sram_init();
170 l1_data_sram_init();
171 l1_inst_sram_init();
172 175
173 /* Allocate this once; never free it. We assume this gives us a 176 /* Allocate this once; never free it. We assume this gives us a
174 pointer to the start of L1 scratchpad memory; panic if it 177 pointer to the start of L1 scratchpad memory; panic if it
@@ -179,7 +182,10 @@ void __init mem_init(void)
179 tmp, (unsigned long)L1_SCRATCH_TASK_INFO); 182 tmp, (unsigned long)L1_SCRATCH_TASK_INFO);
180 panic("No L1, time to give up\n"); 183 panic("No L1, time to give up\n");
181 } 184 }
185
186 return 0;
182} 187}
188pure_initcall(sram_init);
183 189
184static void __init free_init_pages(const char *what, unsigned long begin, unsigned long end) 190static void __init free_init_pages(const char *what, unsigned long begin, unsigned long end)
185{ 191{
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-17 22:58:22 -0500