diff options
Diffstat (limited to 'drivers/net/ethernet/ti/davinci_cpdma.c')
| -rw-r--r-- | drivers/net/ethernet/ti/davinci_cpdma.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/ethernet/ti/davinci_cpdma.c b/drivers/net/ethernet/ti/davinci_cpdma.c index b229bf3df912..65e2f124d62a 100644 --- a/drivers/net/ethernet/ti/davinci_cpdma.c +++ b/drivers/net/ethernet/ti/davinci_cpdma.c @@ -219,6 +219,18 @@ int cpdma_desc_pool_create(struct cpdma_ctlr *ctlr) cpdma_params->desc_align); pool->num_desc = pool->mem_size / pool->desc_size; + if (cpdma_params->descs_pool_size) { + /* recalculate memory size required cpdma descriptor pool + * basing on number of descriptors specified by user and + * if memory size > CPPI internal RAM size (desc_mem_size) + * then switch to use DDR + */ + pool->num_desc = cpdma_params->descs_pool_size; + pool->mem_size = pool->desc_size * pool->num_desc; + if (pool->mem_size > cpdma_params->desc_mem_size) + cpdma_params->desc_mem_phys = 0; + } + pool->gen_pool = devm_gen_pool_create(ctlr->dev, ilog2(pool->desc_size), -1, "cpdma"); if (IS_ERR(pool->gen_pool)) { |