diff options
Diffstat (limited to 'drivers/dma/ti/k3-udma.c')
| -rw-r--r-- | drivers/dma/ti/k3-udma.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index 3013c4741d0..723265ab2e5 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -36,6 +36,7 @@ #include "k3-psil-priv.h" #define K3_UDMA_MAX_RFLOWS 1024 +#define K3_UDMA_MAX_TR 2 struct udma_chan; @@ -74,7 +75,6 @@ struct udma_tchan { struct k3_nav_ring *t_ring; /* Transmit ring */ struct k3_nav_ring *tc_ring; /* Transmit Completion ring */ int tflow_id; /* applicable only for PKTDMA */ - }; #define udma_bchan udma_tchan @@ -175,6 +175,7 @@ struct udma_dev { struct udma_rflow *rflows; struct udma_match_data *match_data; + void *bc_desc; struct udma_chan *channels; u32 psil_base; @@ -1349,6 +1350,7 @@ static int udma_setup_resources(struct udma_dev *ud) struct ti_sci_resource_desc *rm_desc; struct ti_sci_resource *rm_res; struct udma_tisci_rm *tisci_rm = &ud->tisci_rm; + size_t desc_size; ud->tchan_map = devm_kmalloc_array(dev, BITS_TO_LONGS(ud->tchan_cnt), sizeof(unsigned long), GFP_KERNEL); @@ -1366,9 +1368,11 @@ static int udma_setup_resources(struct udma_dev *ud) ud->rflows = devm_kcalloc(dev, ud->rflow_cnt, sizeof(*ud->rflows), GFP_KERNEL); + desc_size = cppi5_trdesc_calc_size(K3_UDMA_MAX_TR, sizeof(struct cppi5_tr_type15_t)); + ud->bc_desc = devm_kzalloc(dev, ALIGN(desc_size, ARCH_DMA_MINALIGN), GFP_KERNEL); if (!ud->tchan_map || !ud->rchan_map || !ud->rflow_map || !ud->rflow_map_reserved || !ud->tchans || !ud->rchans || - !ud->rflows) + !ud->rflows || !ud->bc_desc) return -ENOMEM; /* @@ -1444,6 +1448,7 @@ static int bcdma_setup_resources(struct udma_dev *ud) struct ti_sci_resource_desc *rm_desc; struct ti_sci_resource *rm_res; struct udma_tisci_rm *tisci_rm = &ud->tisci_rm; + size_t desc_size; ud->bchan_map = devm_kmalloc_array(dev, BITS_TO_LONGS(ud->bchan_cnt), sizeof(unsigned long), GFP_KERNEL); @@ -1460,9 +1465,12 @@ static int bcdma_setup_resources(struct udma_dev *ud) ud->rflows = devm_kcalloc(dev, ud->rchan_cnt, sizeof(*ud->rflows), GFP_KERNEL); + desc_size = cppi5_trdesc_calc_size(K3_UDMA_MAX_TR, sizeof(struct cppi5_tr_type15_t)); + ud->bc_desc = devm_kzalloc(dev, ALIGN(desc_size, ARCH_DMA_MINALIGN), GFP_KERNEL); + if (!ud->bchan_map || !ud->tchan_map || !ud->rchan_map || !ud->bchans || !ud->tchans || !ud->rchans || - !ud->rflows) + !ud->rflows || !ud->bc_desc) return -ENOMEM; /* Get resource ranges from tisci */ @@ -1718,8 +1726,7 @@ static int *udma_prep_dma_memcpy(struct udma_chan *uc, dma_addr_t dest, int num_tr; size_t tr_size = sizeof(struct cppi5_tr_type15_t); u16 tr0_cnt0, tr0_cnt1, tr1_cnt0; - unsigned long dummy; - void *tr_desc; + void *tr_desc = uc->ud->bc_desc; size_t desc_size; if (len < SZ_64K) { @@ -1748,9 +1755,6 @@ static int *udma_prep_dma_memcpy(struct udma_chan *uc, dma_addr_t dest, } desc_size = cppi5_trdesc_calc_size(num_tr, tr_size); - tr_desc = dma_alloc_coherent(desc_size, &dummy); - if (!tr_desc) - return NULL; memset(tr_desc, 0, desc_size); cppi5_trdesc_init(tr_desc, num_tr, tr_size, 0, 0); |