diff options
Diffstat (limited to 'lib/librte_eal/common')
| -rw-r--r-- | lib/librte_eal/common/eal_common_memory.c | 43 | ||||
| -rw-r--r-- | lib/librte_eal/common/include/rte_bitmap.h | 8 | ||||
| -rw-r--r-- | lib/librte_eal/common/include/rte_memory.h | 3 | ||||
| -rw-r--r-- | lib/librte_eal/common/include/rte_version.h | 2 |
4 files changed, 51 insertions, 5 deletions
diff --git a/lib/librte_eal/common/eal_common_memory.c b/lib/librte_eal/common/eal_common_memory.c index fc6c44da..a0922f18 100644 --- a/lib/librte_eal/common/eal_common_memory.c +++ b/lib/librte_eal/common/eal_common_memory.c @@ -109,6 +109,49 @@ rte_dump_physmem_layout(FILE *f) } } +/* 63 bits is good enough for a sanity check */ +#define MAX_DMA_MASK_BITS 63 + +/* check memseg iovas are within the required range based on dma mask */ +int +rte_eal_check_dma_mask(uint8_t maskbits) +{ + + const struct rte_mem_config *mcfg; + uint64_t mask; + int i; + + /* sanity check */ + if (maskbits > MAX_DMA_MASK_BITS) { + RTE_LOG(INFO, EAL, "wrong dma mask size %u (Max: %u)\n", + maskbits, MAX_DMA_MASK_BITS); + return -1; + } + + /* create dma mask */ + mask = ~((1ULL << maskbits) - 1); + + /* get pointer to global configuration */ + mcfg = rte_eal_get_configuration()->mem_config; + + for (i = 0; i < RTE_MAX_MEMSEG; i++) { + if (mcfg->memseg[i].addr == NULL) + break; + + if (mcfg->memseg[i].iova & mask) { + RTE_LOG(INFO, EAL, + "memseg[%d] iova %"PRIx64" out of range:\n", + i, mcfg->memseg[i].iova); + + RTE_LOG(INFO, EAL, "\tusing dma mask %"PRIx64"\n", + mask); + return -1; + } + } + + return 0; +} + /* return the number of memory channels */ unsigned rte_memory_get_nchannel(void) { diff --git a/lib/librte_eal/common/include/rte_bitmap.h b/lib/librte_eal/common/include/rte_bitmap.h index b9067e67..13bfd9cb 100644 --- a/lib/librte_eal/common/include/rte_bitmap.h +++ b/lib/librte_eal/common/include/rte_bitmap.h @@ -227,12 +227,12 @@ rte_bitmap_get_memory_footprint(uint32_t n_bits) { /** * Bitmap initialization * - * @param mem_size - * Minimum expected size of bitmap. + * @param n_bits + * Number of pre-allocated bits in array2. * @param mem * Base address of array1 and array2. - * @param n_bits - * Number of pre-allocated bits in array2. Must be non-zero and multiple of 512. + * @param mem_size + * Minimum expected size of bitmap. * @return * Handle to bitmap instance. */ diff --git a/lib/librte_eal/common/include/rte_memory.h b/lib/librte_eal/common/include/rte_memory.h index 80a8fc02..b2a01689 100644 --- a/lib/librte_eal/common/include/rte_memory.h +++ b/lib/librte_eal/common/include/rte_memory.h @@ -209,6 +209,9 @@ unsigned rte_memory_get_nchannel(void); */ unsigned rte_memory_get_nrank(void); +/* check memsegs iovas are within a range based on dma mask */ +int rte_eal_check_dma_mask(uint8_t maskbits); + /** * Drivers based on uio will not load unless physical * addresses are obtainable. It is only possible to get diff --git a/lib/librte_eal/common/include/rte_version.h b/lib/librte_eal/common/include/rte_version.h index 99ae35e5..4d0a9f7c 100644 --- a/lib/librte_eal/common/include/rte_version.h +++ b/lib/librte_eal/common/include/rte_version.h @@ -66,7 +66,7 @@ extern "C" { /** * Patch level number i.e. the z in yy.mm.z */ -#define RTE_VER_MINOR 3 +#define RTE_VER_MINOR 4 /** * Extra string to be appended to version number |