diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath11k/dbring.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath11k/dbring.c | 65 |
1 files changed, 55 insertions, 10 deletions
diff --git a/drivers/net/wireless/ath/ath11k/dbring.c b/drivers/net/wireless/ath/ath11k/dbring.c index fd98ba5b1130..2107ec05d14f 100644 --- a/drivers/net/wireless/ath/ath11k/dbring.c +++ b/drivers/net/wireless/ath/ath11k/dbring.c @@ -6,9 +6,39 @@ #include "core.h" #include "debug.h" +#define ATH11K_DB_MAGIC_VALUE 0xdeadbeaf + +int ath11k_dbring_validate_buffer(struct ath11k *ar, void *buffer, u32 size) +{ + u32 *temp; + int idx; + + size = size >> 2; + + for (idx = 0, temp = buffer; idx < size; idx++, temp++) { + if (*temp == ATH11K_DB_MAGIC_VALUE) + return -EINVAL; + } + + return 0; +} + +static void ath11k_dbring_fill_magic_value(struct ath11k *ar, + void *buffer, u32 size) +{ + u32 *temp; + int idx; + + size = size >> 2; + + for (idx = 0, temp = buffer; idx < size; idx++, temp++) + *temp++ = ATH11K_DB_MAGIC_VALUE; +} + static int ath11k_dbring_bufs_replenish(struct ath11k *ar, struct ath11k_dbring *ring, - struct ath11k_dbring_element *buff) + struct ath11k_dbring_element *buff, + enum wmi_direct_buffer_module id) { struct ath11k_base *ab = ar->ab; struct hal_srng *srng; @@ -26,6 +56,7 @@ static int ath11k_dbring_bufs_replenish(struct ath11k *ar, ptr_unaligned = buff->payload; ptr_aligned = PTR_ALIGN(ptr_unaligned, ring->buf_align); + ath11k_dbring_fill_magic_value(ar, ptr_aligned, ring->buf_sz); paddr = dma_map_single(ab->dev, ptr_aligned, ring->buf_sz, DMA_FROM_DEVICE); @@ -54,6 +85,7 @@ static int ath11k_dbring_bufs_replenish(struct ath11k *ar, ath11k_hal_rx_buf_addr_info_set(desc, paddr, cookie, 0); + ath11k_debugfs_add_dbring_entry(ar, id, ATH11K_DBG_DBR_EVENT_REPLENISH, srng); ath11k_hal_srng_access_end(ab, srng); return 0; @@ -71,7 +103,8 @@ err: } static int ath11k_dbring_fill_bufs(struct ath11k *ar, - struct ath11k_dbring *ring) + struct ath11k_dbring *ring, + enum wmi_direct_buffer_module id) { struct ath11k_dbring_element *buff; struct hal_srng *srng; @@ -87,17 +120,23 @@ static int ath11k_dbring_fill_bufs(struct ath11k *ar, req_entries = min(num_free, ring->bufs_max); num_remain = req_entries; align = ring->buf_align; - size = sizeof(*buff) + ring->buf_sz + align - 1; + size = ring->buf_sz + align - 1; while (num_remain > 0) { - buff = kzalloc(size, GFP_ATOMIC); + buff = kzalloc(sizeof(*buff), GFP_ATOMIC); if (!buff) break; - ret = ath11k_dbring_bufs_replenish(ar, ring, buff); + buff->payload = kzalloc(size, GFP_ATOMIC); + if (!buff->payload) { + kfree(buff); + break; + } + ret = ath11k_dbring_bufs_replenish(ar, ring, buff, id); if (ret) { ath11k_warn(ar->ab, "failed to replenish db ring num_remain %d req_ent %d\n", num_remain, req_entries); + kfree(buff->payload); kfree(buff); break; } @@ -174,7 +213,7 @@ int ath11k_dbring_buf_setup(struct ath11k *ar, ring->hp_addr = ath11k_hal_srng_get_hp_addr(ar->ab, srng); ring->tp_addr = ath11k_hal_srng_get_tp_addr(ar->ab, srng); - ret = ath11k_dbring_fill_bufs(ar, ring); + ret = ath11k_dbring_fill_bufs(ar, ring, db_cap->id); return ret; } @@ -234,7 +273,7 @@ int ath11k_dbring_buffer_release_event(struct ath11k_base *ab, struct ath11k_buffer_addr desc; u8 *vaddr_unalign; u32 num_entry, num_buff_reaped; - u8 pdev_idx, rbm; + u8 pdev_idx, rbm, module_id; u32 cookie; int buf_id; int size; @@ -242,6 +281,7 @@ int ath11k_dbring_buffer_release_event(struct ath11k_base *ab, int ret = 0; pdev_idx = ev->fixed.pdev_id; + module_id = ev->fixed.module_id; if (pdev_idx >= ab->num_radios) { ath11k_warn(ab, "Invalid pdev id %d\n", pdev_idx); @@ -282,7 +322,7 @@ int ath11k_dbring_buffer_release_event(struct ath11k_base *ab, srng = &ab->hal.srng_list[ring->refill_srng.ring_id]; num_entry = ev->fixed.num_buf_release_entry; - size = sizeof(*buff) + ring->buf_sz + ring->buf_align - 1; + size = ring->buf_sz + ring->buf_align - 1; num_buff_reaped = 0; spin_lock_bh(&srng->lock); @@ -310,6 +350,9 @@ int ath11k_dbring_buffer_release_event(struct ath11k_base *ab, dma_unmap_single(ab->dev, buff->paddr, ring->buf_sz, DMA_FROM_DEVICE); + ath11k_debugfs_add_dbring_entry(ar, module_id, + ATH11K_DBG_DBR_EVENT_RX, srng); + if (ring->handler) { vaddr_unalign = buff->payload; handler_data.data = PTR_ALIGN(vaddr_unalign, @@ -319,8 +362,9 @@ int ath11k_dbring_buffer_release_event(struct ath11k_base *ab, ring->handler(ar, &handler_data); } - memset(buff, 0, size); - ath11k_dbring_bufs_replenish(ar, ring, buff); + buff->paddr = 0; + memset(buff->payload, 0, size); + ath11k_dbring_bufs_replenish(ar, ring, buff, module_id); } spin_unlock_bh(&srng->lock); @@ -346,6 +390,7 @@ void ath11k_dbring_buf_cleanup(struct ath11k *ar, struct ath11k_dbring *ring) idr_remove(&ring->bufs_idr, buf_id); dma_unmap_single(ar->ab->dev, buff->paddr, ring->buf_sz, DMA_FROM_DEVICE); + kfree(buff->payload); kfree(buff); } |