diff options
Diffstat (limited to 'dma')
| -rw-r--r-- | dma/ipe.c | 38 | ||||
| -rw-r--r-- | dma/ipe_benchmark.c | 7 | ||||
| -rw-r--r-- | dma/ipe_private.h | 3 |
3 files changed, 7 insertions, 41 deletions
@@ -37,29 +37,8 @@ pcilib_dma_context_t *dma_ipe_init(pcilib_t *pcilib, const char *model, const vo ctx->mode64 = 1; #endif /* IPEDMA_64BIT_MODE */ -/* - memset(ctx->engine, 0, 2 * sizeof(pcilib_dma_engine_description_t)); - ctx->engine[0].addr = 0; - ctx->engine[0].type = PCILIB_DMA_TYPE_PACKET; - ctx->engine[0].direction = PCILIB_DMA_FROM_DEVICE; - ctx->engine[0].addr_bits = 32; - pcilib_set_dma_engine_description(pcilib, 0, &ctx->engine[0]); - pcilib_set_dma_engine_description(pcilib, 1, NULL); -*/ - pcilib_register_bank_t dma_bank = pcilib_find_register_bank_by_addr(pcilib, PCILIB_REGISTER_BANK_DMA); -/* - if (dma_bank == PCILIB_REGISTER_BANK_INVALID) { - err = pcilib_add_register_banks(ctx->pcilib, 0, ipe_dma_register_banks); - if (err) { - free(ctx); - pcilib_error("Error (%i) adding DMA register bank"); - return NULL; - } - } - dma_bank = pcilib_find_bank_by_addr(pcilib, PCILIB_REGISTER_BANK_DMA); -*/ if (dma_bank == PCILIB_REGISTER_BANK_INVALID) { free(ctx); pcilib_error("DMA Register Bank could not be found"); @@ -68,15 +47,6 @@ pcilib_dma_context_t *dma_ipe_init(pcilib_t *pcilib, const char *model, const vo ctx->dma_bank = model_info->banks + dma_bank; ctx->base_addr = pcilib_resolve_register_address(pcilib, ctx->dma_bank->bar, ctx->dma_bank->read_addr); - -/* - err = pcilib_add_registers(ctx->pcilib, 0, ipe_dma_registers); - if (err) { - free(ctx); - pcilib_error("Error adding DMA registers"); - return NULL; - } -*/ } return (pcilib_dma_context_t*)ctx; @@ -229,8 +199,7 @@ int dma_ipe_start(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, pcilib_dm WR(IPEDMA_REG_UPDATE_ADDR, pcilib_kmem_get_block_ba(ctx->dmactx.pcilib, desc, 0)); // Instructing DMA engine that writting should start from the first DMA page - *last_written_addr_ptr = 0;//htonl(pcilib_kmem_get_block_ba(ctx->dmactx.pcilib, pages, IPEDMA_DMA_PAGES - 1)); - + *last_written_addr_ptr = 0; for (i = 0; i < IPEDMA_DMA_PAGES; i++) { uintptr_t bus_addr_check, bus_addr = pcilib_kmem_get_block_ba(ctx->dmactx.pcilib, pages, i); @@ -259,10 +228,8 @@ int dma_ipe_start(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, pcilib_dm #endif /* IPEDMA_BUG_DMARD */ } -// ctx->last_read_addr = htonl(pcilib_kmem_get_block_ba(ctx->dmactx.pcilib, pages, ctx->last_read)); ctx->last_read_addr = pcilib_kmem_get_block_ba(ctx->dmactx.pcilib, pages, ctx->last_read); - ctx->desc = desc; ctx->pages = pages; ctx->page_size = pcilib_kmem_get_block_size(ctx->dmactx.pcilib, pages, 0); @@ -534,7 +501,7 @@ int dma_ipe_stream_read(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, uin ret = cb(cbattr, packet_flags, ctx->page_size, buf); if (ret < 0) return -ret; -// DS: Fixme, it looks like we can avoid calling this for the sake of performance + // We don't need this because hardwaredoes not intend to read anything from the memory // pcilib_kmem_sync_block(ctx->dmactx.pcilib, ctx->pages, PCILIB_KMEM_SYNC_TODEVICE, cur_read); // Numbered from 1 @@ -551,7 +518,6 @@ int dma_ipe_stream_read(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, uin ctx->last_read = cur_read; -// ctx->last_read_addr = htonl(pcilib_kmem_get_block_ba(ctx->dmactx.pcilib, ctx->pages, cur_read)); ctx->last_read_addr = pcilib_kmem_get_block_ba(ctx->dmactx.pcilib, ctx->pages, cur_read); #ifdef IPEDMA_BUG_DMARD diff --git a/dma/ipe_benchmark.c b/dma/ipe_benchmark.c index 3c10715..f8e0a7e 100644 --- a/dma/ipe_benchmark.c +++ b/dma/ipe_benchmark.c @@ -146,13 +146,13 @@ double dma_ipe_benchmark(pcilib_dma_context_t *vctx, pcilib_dma_engine_addr_t dm pcilib_info_once("Benchmarking the DMA hardware (without memcpy)"); WR(IPEDMA_REG_CONTROL, 0x0); - +/* err = pcilib_skip_dma(ctx->dmactx.pcilib, 0); if (err) { pcilib_error("Can't start benchmark, devices continuously writes unexpected data using DMA engine"); return -1; } - +*/ // Allocate memory and prepare data buf = malloc(size); if (!buf) return -1; @@ -177,12 +177,13 @@ double dma_ipe_benchmark(pcilib_dma_context_t *vctx, pcilib_dma_engine_addr_t dm gettimeofday(&cur, NULL); us += ((cur.tv_sec - start.tv_sec)*1000000 + (cur.tv_usec - start.tv_usec)); - +/* err = pcilib_skip_dma(ctx->dmactx.pcilib, 0); if (err) { pcilib_error("Can't start iteration, devices continuously writes unexpected data using DMA engine"); break; } +*/ } } diff --git a/dma/ipe_private.h b/dma/ipe_private.h index ae5df1c..5cfb10b 100644 --- a/dma/ipe_private.h +++ b/dma/ipe_private.h @@ -9,7 +9,7 @@ //#define IPEDMA_TLP_SIZE 128 /**< If set, enforces the specified TLP size */ #define IPEDMA_PAGE_SIZE 4096 -#define IPEDMA_DMA_PAGES 32 /**< number of DMA pages in the ring buffer to allocate */ +#define IPEDMA_DMA_PAGES 1024 /**< number of DMA pages in the ring buffer to allocate */ #define IPEDMA_DMA_PROGRESS_THRESHOLD 1 /**< how many pages the DMA engine should fill before reporting progress */ #define IPEDMA_DESCRIPTOR_SIZE 128 #define IPEDMA_DESCRIPTOR_ALIGNMENT 64 @@ -35,7 +35,6 @@ #define IPEDMA_REG_PAGE_COUNT 0x5C #define IPEDMA_REG_UPDATE_THRESHOLD 0x60 - #define WR(addr, value) { *(uint32_t*)(ctx->base_addr + addr) = value; } #define RD(addr, value) { value = *(uint32_t*)(ctx->base_addr + addr); } |