diff options
Diffstat (limited to 'hal.c')
| -rw-r--r-- | hal.c | 44 |
1 files changed, 36 insertions, 8 deletions
@@ -1,7 +1,7 @@ // SPDX-License-Identifier: BSD-3-Clause-Clear /* * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. - * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved. + * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved. */ #include <linux/dma-mapping.h> #include "hal_tx.h" @@ -571,7 +571,7 @@ u32 ath11k_hal_ce_get_desc_size(enum hal_ce_desc type) void ath11k_hal_ce_src_set_desc(void *buf, dma_addr_t paddr, u32 len, u32 id, u8 byte_swap_data) { - struct hal_ce_srng_src_desc *desc = (struct hal_ce_srng_src_desc *)buf; + struct hal_ce_srng_src_desc *desc = buf; desc->buffer_addr_low = paddr & HAL_ADDR_LSB_REG_MASK; desc->buffer_addr_info = @@ -586,8 +586,7 @@ void ath11k_hal_ce_src_set_desc(void *buf, dma_addr_t paddr, u32 len, u32 id, void ath11k_hal_ce_dst_set_desc(void *buf, dma_addr_t paddr) { - struct hal_ce_srng_dest_desc *desc = - (struct hal_ce_srng_dest_desc *)buf; + struct hal_ce_srng_dest_desc *desc = buf; desc->buffer_addr_low = paddr & HAL_ADDR_LSB_REG_MASK; desc->buffer_addr_info = @@ -597,8 +596,7 @@ void ath11k_hal_ce_dst_set_desc(void *buf, dma_addr_t paddr) u32 ath11k_hal_ce_dst_status_get_length(void *buf) { - struct hal_ce_srng_dst_status_desc *desc = - (struct hal_ce_srng_dst_status_desc *)buf; + struct hal_ce_srng_dst_status_desc *desc = buf; u32 len; len = FIELD_GET(HAL_CE_DST_STATUS_DESC_FLAGS_LEN, desc->flags); @@ -628,15 +626,30 @@ u32 *ath11k_hal_srng_dst_peek(struct ath11k_base *ab, struct hal_srng *srng) return NULL; } +static u32 *ath11k_hal_srng_dst_peek_with_dma(struct ath11k_base *ab, + struct hal_srng *srng, dma_addr_t *paddr) +{ + lockdep_assert_held(&srng->lock); + + if (srng->u.dst_ring.tp != srng->u.dst_ring.cached_hp) { + *paddr = srng->ring_base_paddr + + sizeof(*srng->ring_base_vaddr) * srng->u.dst_ring.tp; + return srng->ring_base_vaddr + srng->u.dst_ring.tp; + } + + return NULL; +} + static void ath11k_hal_srng_prefetch_desc(struct ath11k_base *ab, struct hal_srng *srng) { + dma_addr_t desc_paddr; u32 *desc; /* prefetch only if desc is available */ - desc = ath11k_hal_srng_dst_peek(ab, srng); + desc = ath11k_hal_srng_dst_peek_with_dma(ab, srng, &desc_paddr); if (likely(desc)) { - dma_sync_single_for_cpu(ab->dev, virt_to_phys(desc), + dma_sync_single_for_cpu(ab->dev, desc_paddr, (srng->entry_size * sizeof(u32)), DMA_FROM_DEVICE); prefetch(desc); @@ -783,6 +796,20 @@ u32 *ath11k_hal_srng_src_get_next_reaped(struct ath11k_base *ab, return desc; } +u32 *ath11k_hal_srng_src_next_peek(struct ath11k_base *ab, struct hal_srng *srng) +{ + u32 next_hp; + + lockdep_assert_held(&srng->lock); + + next_hp = (srng->u.src_ring.hp + srng->entry_size) % srng->ring_size; + + if (next_hp != srng->u.src_ring.cached_tp) + return srng->ring_base_vaddr + next_hp; + + return NULL; +} + u32 *ath11k_hal_srng_src_peek(struct ath11k_base *ab, struct hal_srng *srng) { lockdep_assert_held(&srng->lock); @@ -1324,6 +1351,7 @@ void ath11k_hal_srng_deinit(struct ath11k_base *ab) ath11k_hal_free_cont_rdp(ab); ath11k_hal_free_cont_wrp(ab); kfree(hal->srng_config); + hal->srng_config = NULL; } EXPORT_SYMBOL(ath11k_hal_srng_deinit); |