diff options
Diffstat (limited to 'drivers/net/ethernet/ti')
| -rw-r--r-- | drivers/net/ethernet/ti/cpsw.c | 12 | ||||
| -rw-r--r-- | drivers/net/ethernet/ti/davinci_cpdma.c | 12 | ||||
| -rw-r--r-- | drivers/net/ethernet/ti/davinci_cpdma.h | 1 |
3 files changed, 22 insertions, 3 deletions
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index b203143647e6..d39875e267d9 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -145,6 +145,7 @@ do { \ cpsw->data.active_slave) #define IRQ_NUM 2 #define CPSW_MAX_QUEUES 8 +#define CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT 256 static int debug_level; module_param(debug_level, int, 0); @@ -158,6 +159,10 @@ static int rx_packet_max = CPSW_MAX_PACKET_SIZE; module_param(rx_packet_max, int, 0); MODULE_PARM_DESC(rx_packet_max, "maximum receive packet size (bytes)"); +static int descs_pool_size = CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT; +module_param(descs_pool_size, int, 0444); +MODULE_PARM_DESC(descs_pool_size, "Number of CPDMA CPPI descriptors in pool"); + struct cpsw_wr_regs { u32 id_ver; u32 soft_reset; @@ -2969,6 +2974,7 @@ static int cpsw_probe(struct platform_device *pdev) dma_params.has_ext_regs = true; dma_params.desc_hw_addr = dma_params.desc_mem_phys; dma_params.bus_freq_mhz = cpsw->bus_freq_mhz; + dma_params.descs_pool_size = descs_pool_size; cpsw->dma = cpdma_ctlr_create(&dma_params); if (!cpsw->dma) { @@ -3072,9 +3078,9 @@ static int cpsw_probe(struct platform_device *pdev) goto clean_ale_ret; } - cpsw_notice(priv, probe, "initialized device (regs %pa, irq %d)\n", - &ss_res->start, ndev->irq); - + cpsw_notice(priv, probe, + "initialized device (regs %pa, irq %d, pool size %d)\n", + &ss_res->start, ndev->irq, dma_params.descs_pool_size); if (cpsw->data.dual_emac) { ret = cpsw_probe_dual_emac(priv); if (ret) { 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)) { diff --git a/drivers/net/ethernet/ti/davinci_cpdma.h b/drivers/net/ethernet/ti/davinci_cpdma.h index 4a167db2abab..cb45f8f543d9 100644 --- a/drivers/net/ethernet/ti/davinci_cpdma.h +++ b/drivers/net/ethernet/ti/davinci_cpdma.h @@ -37,6 +37,7 @@ struct cpdma_params { int desc_mem_size; int desc_align; u32 bus_freq_mhz; + u32 descs_pool_size; /* * Some instances of embedded cpdma controllers have extra control and |