diff options
Diffstat (limited to 'src/plugins/dma_intel/dsa.c')
| -rw-r--r-- | src/plugins/dma_intel/dsa.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/plugins/dma_intel/dsa.c b/src/plugins/dma_intel/dsa.c index 7e1cdc2de01..a1efcfaa42a 100644 --- a/src/plugins/dma_intel/dsa.c +++ b/src/plugins/dma_intel/dsa.c @@ -212,6 +212,29 @@ intel_dsa_check_channel (intel_dsa_channel_t *ch, vlib_dma_config_data_t *cd) return 0; } +static_always_inline void +intel_dsa_alloc_dma_batch (vlib_main_t *vm, intel_dsa_config_t *idc) +{ + intel_dsa_batch_t *b; + b = vlib_physmem_alloc (vm, idc->alloc_size); + /* if no free space in physmem, force quit */ + ASSERT (b != NULL); + *b = idc->batch_template; + b->max_transfers = idc->max_transfers; + + u32 def_flags = (INTEL_DSA_OP_MEMMOVE << INTEL_DSA_OP_SHIFT) | + INTEL_DSA_FLAG_CACHE_CONTROL; + if (b->ch->block_on_fault) + def_flags |= INTEL_DSA_FLAG_BLOCK_ON_FAULT; + + for (int i = 0; i < idc->max_transfers; i++) + { + intel_dsa_desc_t *dsa_desc = b->descs + i; + dsa_desc->op_flags = def_flags; + } + vec_add1 (idc->freelist, b); +} + static int intel_dsa_config_add_fn (vlib_main_t *vm, vlib_dma_config_data_t *cd) { @@ -259,6 +282,10 @@ intel_dsa_config_add_fn (vlib_main_t *vm, vlib_dma_config_data_t *cd) "config %d in thread %d stride %d src/dst/size offset %d-%d-%d", cd->config_index, thread, b->stride, b->src_ptr_off, b->dst_ptr_off, b->size_off); + + /* allocate dma batch in advance */ + for (u32 index = 0; index < cd->cfg.max_batches; index++) + intel_dsa_alloc_dma_batch (vm, idc); } dsa_log_info ("config %u added", cd->private_data); |