diff options
Diffstat (limited to 'arch/blackfin/mm')
-rw-r--r-- | arch/blackfin/mm/isram-driver.c | 94 |
1 files changed, 51 insertions, 43 deletions
diff --git a/arch/blackfin/mm/isram-driver.c b/arch/blackfin/mm/isram-driver.c index 39b05856..7e2e674 100644 --- a/arch/blackfin/mm/isram-driver.c +++ b/arch/blackfin/mm/isram-driver.c @@ -43,13 +43,12 @@ static DEFINE_SPINLOCK(dtest_lock); /* Takes a void pointer */ #define IADDR2DTEST(x) \ ({ unsigned long __addr = (unsigned long)(x); \ - (__addr & 0x47F8) | /* address bits 14 & 10:3 */ \ - (__addr & 0x8000) << 23 | /* Bank A/B */ \ - (__addr & 0x0800) << 15 | /* address bit 11 */ \ - (__addr & 0x3000) << 4 | /* address bits 13:12 */ \ - (__addr & 0x8000) << 8 | /* address bit 15 */ \ - (0x1000000) | /* instruction access = 1 */ \ - (0x4); /* data array = 1 */ \ + ((__addr & (1 << 11)) << (26 - 11)) | /* addr bit 11 (Way0/Way1) */ \ + (1 << 24) | /* instruction access = 1 */ \ + ((__addr & (1 << 15)) << (23 - 15)) | /* addr bit 15 (Data Bank) */ \ + ((__addr & (3 << 12)) << (16 - 12)) | /* addr bits 13:12 (Subbank) */ \ + (__addr & 0x47F8) | /* addr bits 14 & 10:3 */ \ + (1 << 2); /* data array = 1 */ \ }) /* Takes a pointer, and returns the offset (in bits) which things should be shifted */ @@ -196,7 +195,7 @@ EXPORT_SYMBOL(isram_memcpy); #ifdef CONFIG_BFIN_ISRAM_SELF_TEST -#define TEST_LEN 0x100 +static int test_len = 0x20000; static __init void hex_dump(unsigned char *buf, int len) { @@ -212,15 +211,15 @@ static __init int isram_read_test(char *sdram, void *l1inst) pr_info("INFO: running isram_read tests\n"); /* setup some different data to play with */ - for (i = 0; i < TEST_LEN; ++i) - sdram[i] = i; - dma_memcpy(l1inst, sdram, TEST_LEN); + for (i = 0; i < test_len; ++i) + sdram[i] = i % 255; + dma_memcpy(l1inst, sdram, test_len); /* make sure we can read the L1 inst */ - for (i = 0; i < TEST_LEN; i += sizeof(uint64_t)) { + for (i = 0; i < test_len; i += sizeof(uint64_t)) { data1 = isram_read(l1inst + i); memcpy(&data2, sdram + i, sizeof(data2)); - if (memcmp(&data1, &data2, sizeof(uint64_t))) { + if (data1 != data2) { pr_err("FAIL: isram_read(%p) returned %#llx but wanted %#llx\n", l1inst + i, data1, data2); ++ret; @@ -238,25 +237,25 @@ static __init int isram_write_test(char *sdram, void *l1inst) pr_info("INFO: running isram_write tests\n"); /* setup some different data to play with */ - memset(sdram, 0, TEST_LEN * 2); - dma_memcpy(l1inst, sdram, TEST_LEN); - for (i = 0; i < TEST_LEN; ++i) - sdram[i] = i; + memset(sdram, 0, test_len * 2); + dma_memcpy(l1inst, sdram, test_len); + for (i = 0; i < test_len; ++i) + sdram[i] = i % 255; /* make sure we can write the L1 inst */ - for (i = 0; i < TEST_LEN; i += sizeof(uint64_t)) { + for (i = 0; i < test_len; i += sizeof(uint64_t)) { memcpy(&data1, sdram + i, sizeof(data1)); isram_write(l1inst + i, data1); data2 = isram_read(l1inst + i); - if (memcmp(&data1, &data2, sizeof(uint64_t))) { + if (data1 != data2) { pr_err("FAIL: isram_write(%p, %#llx) != %#llx\n", l1inst + i, data1, data2); ++ret; } } - dma_memcpy(sdram + TEST_LEN, l1inst, TEST_LEN); - if (memcmp(sdram, sdram + TEST_LEN, TEST_LEN)) { + dma_memcpy(sdram + test_len, l1inst, test_len); + if (memcmp(sdram, sdram + test_len, test_len)) { pr_err("FAIL: isram_write() did not work properly\n"); ++ret; } @@ -268,12 +267,12 @@ static __init int _isram_memcpy_test(char pattern, void *sdram, void *l1inst, const char *smemcpy, void *(*fmemcpy)(void *, const void *, size_t)) { - memset(sdram, pattern, TEST_LEN); - fmemcpy(l1inst, sdram, TEST_LEN); - fmemcpy(sdram + TEST_LEN, l1inst, TEST_LEN); - if (memcmp(sdram, sdram + TEST_LEN, TEST_LEN)) { + memset(sdram, pattern, test_len); + fmemcpy(l1inst, sdram, test_len); + fmemcpy(sdram + test_len, l1inst, test_len); + if (memcmp(sdram, sdram + test_len, test_len)) { pr_err("FAIL: %s(%p <=> %p, %#x) failed (data is %#x)\n", - smemcpy, l1inst, sdram, TEST_LEN, pattern); + smemcpy, l1inst, sdram, test_len, pattern); return 1; } return 0; @@ -292,12 +291,13 @@ static __init int isram_memcpy_test(char *sdram, void *l1inst) /* check read of small, unaligned, and hardware 64bit limits */ pr_info("INFO: running isram_memcpy (read) tests\n"); - for (i = 0; i < TEST_LEN; ++i) - sdram[i] = i; - dma_memcpy(l1inst, sdram, TEST_LEN); + /* setup some different data to play with */ + for (i = 0; i < test_len; ++i) + sdram[i] = i % 255; + dma_memcpy(l1inst, sdram, test_len); thisret = 0; - for (i = 0; i < TEST_LEN - 32; ++i) { + for (i = 0; i < test_len - 32; ++i) { unsigned char cmp[32]; for (j = 1; j <= 32; ++j) { memset(cmp, 0, sizeof(cmp)); @@ -310,7 +310,7 @@ static __init int isram_memcpy_test(char *sdram, void *l1inst) pr_cont("\n"); if (++thisret > 20) { pr_err("FAIL: skipping remaining series\n"); - i = TEST_LEN; + i = test_len; break; } } @@ -321,11 +321,11 @@ static __init int isram_memcpy_test(char *sdram, void *l1inst) /* check write of small, unaligned, and hardware 64bit limits */ pr_info("INFO: running isram_memcpy (write) tests\n"); - memset(sdram + TEST_LEN, 0, TEST_LEN); - dma_memcpy(l1inst, sdram + TEST_LEN, TEST_LEN); + memset(sdram + test_len, 0, test_len); + dma_memcpy(l1inst, sdram + test_len, test_len); thisret = 0; - for (i = 0; i < TEST_LEN - 32; ++i) { + for (i = 0; i < test_len - 32; ++i) { unsigned char cmp[32]; for (j = 1; j <= 32; ++j) { isram_memcpy(l1inst + i, sdram + i, j); @@ -338,7 +338,7 @@ static __init int isram_memcpy_test(char *sdram, void *l1inst) pr_cont("\n"); if (++thisret > 20) { pr_err("FAIL: skipping remaining series\n"); - i = TEST_LEN; + i = test_len; break; } } @@ -355,22 +355,30 @@ static __init int isram_test_init(void) char *sdram; void *l1inst; - sdram = kmalloc(TEST_LEN * 2, GFP_KERNEL); - if (!sdram) { - pr_warning("SKIP: could not allocate sdram\n"); - return 0; + /* Try to test as much of L1SRAM as possible */ + while (test_len) { + test_len >>= 1; + l1inst = l1_inst_sram_alloc(test_len); + if (l1inst) + break; } - - l1inst = l1_inst_sram_alloc(TEST_LEN); if (!l1inst) { - kfree(sdram); pr_warning("SKIP: could not allocate L1 inst\n"); return 0; } + pr_info("INFO: testing %#x bytes (%p - %p)\n", + test_len, l1inst, l1inst + test_len); + + sdram = kmalloc(test_len * 2, GFP_KERNEL); + if (!sdram) { + sram_free(l1inst); + pr_warning("SKIP: could not allocate sdram\n"); + return 0; + } /* sanity check initial L1 inst state */ ret = 1; - pr_info("INFO: running initial dma_memcpy checks\n"); + pr_info("INFO: running initial dma_memcpy checks %p\n", sdram); if (_isram_memcpy_test(0xa, sdram, l1inst, dma_memcpy)) goto abort; if (_isram_memcpy_test(0x5, sdram, l1inst, dma_memcpy)) |