| /* |
| * Copyright (c) 2016-2019 The Linux Foundation. All rights reserved. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for |
| * any purpose with or without fee is hereby granted, provided that the |
| * above copyright notice and this permission notice appear in all |
| * copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| * PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include "hal_hw_headers.h" |
| #include "dp_types.h" |
| #include "dp_tx_desc.h" |
| |
| #ifndef DESC_PARTITION |
| #define DP_TX_DESC_SIZE(a) qdf_get_pwr2(a) |
| #define DP_TX_DESC_PAGE_DIVIDER(soc, num_desc_per_page, pool_id) \ |
| do { \ |
| uint8_t sig_bit; \ |
| soc->tx_desc[pool_id].offset_filter = num_desc_per_page - 1; \ |
| /* Calculate page divider to find page number */ \ |
| sig_bit = 0; \ |
| while (num_desc_per_page) { \ |
| sig_bit++; \ |
| num_desc_per_page = num_desc_per_page >> 1; \ |
| } \ |
| soc->tx_desc[pool_id].page_divider = (sig_bit - 1); \ |
| } while (0) |
| #else |
| #define DP_TX_DESC_SIZE(a) a |
| #define DP_TX_DESC_PAGE_DIVIDER(soc, num_desc_per_page, pool_id) {} |
| #endif /* DESC_PARTITION */ |
| |
| /** |
| * dp_tx_desc_pool_counter_initialize() - Initialize counters |
| * @tx_desc_pool Handle to DP tx_desc_pool structure |
| * @num_elem Number of descriptor elements per pool |
| * |
| * Return: None |
| */ |
| #ifdef QCA_LL_TX_FLOW_CONTROL_V2 |
| static void |
| dp_tx_desc_pool_counter_initialize(struct dp_tx_desc_pool_s *tx_desc_pool, |
| uint16_t num_elem) |
| { |
| } |
| #else |
| static void |
| dp_tx_desc_pool_counter_initialize(struct dp_tx_desc_pool_s *tx_desc_pool, |
| uint16_t num_elem) |
| { |
| tx_desc_pool->num_free = num_elem; |
| tx_desc_pool->num_allocated = 0; |
| } |
| #endif |
| |
| /** |
| * dp_tx_desc_pool_alloc() - Allocate Tx Descriptor pool(s) |
| * @soc Handle to DP SoC structure |
| * @num_pool Number of pools to allocate |
| * @num_elem Number of descriptor elements per pool |
| * |
| * This function allocates memory for SW tx descriptors |
| * (used within host for tx data path). |
| * The number of tx descriptors required will be large |
| * since based on number of clients (1024 clients x 3 radios), |
| * outstanding MSDUs stored in TQM queues and LMAC queues will be significantly |
| * large. |
| * |
| * To avoid allocating a large contiguous memory, it uses multi_page_alloc qdf |
| * function to allocate memory |
| * in multiple pages. It then iterates through the memory allocated across pages |
| * and links each descriptor |
| * to next descriptor, taking care of page boundaries. |
| * |
| * Since WiFi 3.0 HW supports multiple Tx rings, multiple pools are allocated, |
| * one for each ring; |
| * This minimizes lock contention when hard_start_xmit is called |
| * from multiple CPUs. |
| * Alternately, multiple pools can be used for multiple VDEVs for VDEV level |
| * flow control. |
| * |
| * Return: Status code. 0 for success. |
| */ |
| QDF_STATUS dp_tx_desc_pool_alloc(struct dp_soc *soc, uint8_t pool_id, |
| uint16_t num_elem) |
| { |
| uint32_t id, count, page_id, offset, pool_id_32; |
| uint16_t num_desc_per_page; |
| struct dp_tx_desc_s *tx_desc_elem; |
| uint32_t desc_size; |
| struct dp_tx_desc_pool_s *tx_desc_pool = &((soc)->tx_desc[(pool_id)]); |
| |
| desc_size = DP_TX_DESC_SIZE(sizeof(*tx_desc_elem)); |
| tx_desc_pool->elem_size = desc_size; |
| if (!dp_is_soc_reinit(soc)) |
| qdf_mem_multi_pages_alloc(soc->osdev, |
| &tx_desc_pool->desc_pages, |
| desc_size, num_elem, |
| 0, true); |
| if (!tx_desc_pool->desc_pages.num_pages) { |
| dp_err("Multi page alloc fail, tx desc"); |
| goto fail_exit; |
| } |
| |
| |
| num_desc_per_page = |
| tx_desc_pool->desc_pages.num_element_per_page; |
| tx_desc_pool->freelist = (struct dp_tx_desc_s *) |
| *tx_desc_pool->desc_pages.cacheable_pages; |
| if (qdf_mem_multi_page_link(soc->osdev, |
| &tx_desc_pool->desc_pages, |
| desc_size, num_elem, true)) { |
| dp_err("invalid tx desc allocation - overflow num link"); |
| goto free_tx_desc; |
| } |
| |
| /* Set unique IDs for each Tx descriptor */ |
| tx_desc_elem = tx_desc_pool->freelist; |
| count = 0; |
| pool_id_32 = (uint32_t)pool_id; |
| while (tx_desc_elem) { |
| page_id = count / num_desc_per_page; |
| offset = count % num_desc_per_page; |
| id = ((pool_id_32 << DP_TX_DESC_ID_POOL_OS) | |
| (page_id << DP_TX_DESC_ID_PAGE_OS) | offset); |
| |
| tx_desc_elem->id = id; |
| tx_desc_elem->pool_id = pool_id; |
| tx_desc_elem = tx_desc_elem->next; |
| count++; |
| } |
| |
| dp_tx_desc_pool_counter_initialize(tx_desc_pool, num_elem); |
| TX_DESC_LOCK_CREATE(&tx_desc_pool->lock); |
| return QDF_STATUS_SUCCESS; |
| |
| free_tx_desc: |
| qdf_mem_multi_pages_free(soc->osdev, |
| &tx_desc_pool->desc_pages, 0, true); |
| |
| fail_exit: |
| return QDF_STATUS_E_FAULT; |
| } |
| |
| /** |
| * dp_tx_desc_pool_free() - Free the memory pool allocated for Tx Descriptors |
| * |
| * @soc Handle to DP SoC structure |
| * @pool_id |
| * |
| * Return: |
| */ |
| QDF_STATUS dp_tx_desc_pool_free(struct dp_soc *soc, uint8_t pool_id) |
| { |
| struct dp_tx_desc_pool_s *tx_desc_pool = |
| &((soc)->tx_desc[(pool_id)]); |
| |
| qdf_mem_multi_pages_free(soc->osdev, |
| &tx_desc_pool->desc_pages, 0, true); |
| TX_DESC_LOCK_DESTROY(&tx_desc_pool->lock); |
| TX_DESC_POOL_MEMBER_CLEAN(tx_desc_pool); |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * dp_tx_ext_desc_pool_alloc() - Allocate tx ext descriptor pool |
| * @soc Handle to DP SoC structure |
| * @pool_id |
| * |
| * Return: NONE |
| */ |
| QDF_STATUS dp_tx_ext_desc_pool_alloc(struct dp_soc *soc, uint8_t pool_id, |
| uint16_t num_elem) |
| { |
| uint16_t num_page; |
| uint32_t count; |
| struct dp_tx_ext_desc_elem_s *c_elem, *p_elem; |
| struct qdf_mem_dma_page_t *page_info; |
| struct qdf_mem_multi_page_t *pages; |
| QDF_STATUS status; |
| qdf_dma_context_t memctx = 0; |
| |
| /* Coherent tx extension descriptor alloc */ |
| soc->tx_ext_desc[pool_id].elem_size = HAL_TX_EXT_DESC_WITH_META_DATA; |
| soc->tx_ext_desc[pool_id].elem_count = num_elem; |
| memctx = qdf_get_dma_mem_context((&soc->tx_ext_desc[pool_id]), memctx); |
| if (!dp_is_soc_reinit(soc)) { |
| qdf_mem_multi_pages_alloc(soc->osdev, |
| &soc->tx_ext_desc[pool_id]. |
| desc_pages, |
| soc->tx_ext_desc[pool_id].elem_size, |
| soc->tx_ext_desc[pool_id].elem_count, |
| memctx, false); |
| } |
| if (!soc->tx_ext_desc[pool_id].desc_pages.num_pages) { |
| QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, |
| "ext desc page alloc fail"); |
| status = QDF_STATUS_E_NOMEM; |
| goto fail_exit; |
| } |
| |
| num_page = soc->tx_ext_desc[pool_id].desc_pages.num_pages; |
| /* |
| * Cacheable ext descriptor link alloc |
| * This structure also large size already |
| * single element is 24bytes, 2K elements are 48Kbytes |
| * Have to alloc multi page cacheable memory |
| */ |
| soc->tx_ext_desc[pool_id].link_elem_size = |
| sizeof(struct dp_tx_ext_desc_elem_s); |
| if (!dp_is_soc_reinit(soc)) { |
| qdf_mem_multi_pages_alloc(soc->osdev, |
| &soc->tx_ext_desc[pool_id]. |
| desc_link_pages, |
| soc->tx_ext_desc[pool_id]. |
| link_elem_size, |
| soc->tx_ext_desc[pool_id]. |
| elem_count, |
| 0, true); |
| } |
| if (!soc->tx_ext_desc[pool_id].desc_link_pages.num_pages) { |
| QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, |
| "ext link desc page alloc fail"); |
| status = QDF_STATUS_E_NOMEM; |
| goto free_ext_desc_page; |
| } |
| |
| /* link tx descriptors into a freelist */ |
| soc->tx_ext_desc[pool_id].freelist = (struct dp_tx_ext_desc_elem_s *) |
| *soc->tx_ext_desc[pool_id].desc_link_pages.cacheable_pages; |
| if (qdf_mem_multi_page_link(soc->osdev, |
| &soc->tx_ext_desc[pool_id].desc_link_pages, |
| soc->tx_ext_desc[pool_id].link_elem_size, |
| soc->tx_ext_desc[pool_id].elem_count, true)) { |
| QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, |
| "ext link desc page linking fail"); |
| status = QDF_STATUS_E_FAULT; |
| goto free_ext_link_desc_page; |
| } |
| |
| /* Assign coherent memory pointer into linked free list */ |
| pages = &soc->tx_ext_desc[pool_id].desc_pages; |
| page_info = soc->tx_ext_desc[pool_id].desc_pages.dma_pages; |
| c_elem = soc->tx_ext_desc[pool_id].freelist; |
| p_elem = c_elem; |
| for (count = 0; count < soc->tx_ext_desc[pool_id].elem_count; count++) { |
| if (!(count % pages->num_element_per_page)) { |
| /** |
| * First element for new page, |
| * should point next page |
| */ |
| if (!pages->dma_pages->page_v_addr_start) { |
| QDF_TRACE(QDF_MODULE_ID_DP, |
| QDF_TRACE_LEVEL_ERROR, |
| "link over flow"); |
| status = QDF_STATUS_E_FAULT; |
| goto free_ext_link_desc_page; |
| } |
| c_elem->vaddr = (void *)page_info->page_v_addr_start; |
| c_elem->paddr = page_info->page_p_addr; |
| page_info++; |
| } else { |
| c_elem->vaddr = (void *)(p_elem->vaddr + |
| soc->tx_ext_desc[pool_id].elem_size); |
| c_elem->paddr = (p_elem->paddr + |
| soc->tx_ext_desc[pool_id].elem_size); |
| } |
| p_elem = c_elem; |
| c_elem = c_elem->next; |
| if (!c_elem) |
| break; |
| } |
| |
| soc->tx_ext_desc[pool_id].num_free = num_elem; |
| qdf_spinlock_create(&soc->tx_ext_desc[pool_id].lock); |
| return QDF_STATUS_SUCCESS; |
| |
| free_ext_link_desc_page: |
| qdf_mem_multi_pages_free(soc->osdev, |
| &soc->tx_ext_desc[pool_id].desc_link_pages, 0, true); |
| |
| free_ext_desc_page: |
| qdf_mem_multi_pages_free(soc->osdev, |
| &soc->tx_ext_desc[pool_id].desc_pages, |
| qdf_get_dma_mem_context((&soc->tx_ext_desc[pool_id]), memctx), |
| false); |
| |
| fail_exit: |
| return status; |
| |
| } |
| |
| /** |
| * dp_tx_ext_desc_pool_free() - free tx ext descriptor pool |
| * @soc: Handle to DP SoC structure |
| * @pool_id: extension descriptor pool id |
| * |
| * Return: NONE |
| */ |
| QDF_STATUS dp_tx_ext_desc_pool_free(struct dp_soc *soc, uint8_t pool_id) |
| { |
| qdf_mem_multi_pages_free(soc->osdev, |
| &soc->tx_ext_desc[pool_id].desc_link_pages, 0, true); |
| |
| qdf_mem_multi_pages_free(soc->osdev, |
| &soc->tx_ext_desc[pool_id].desc_pages, |
| qdf_get_dma_mem_context((&soc->tx_ext_desc[pool_id]), memctx), |
| false); |
| |
| qdf_spinlock_destroy(&soc->tx_ext_desc[pool_id].lock); |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * dp_tx_tso_desc_pool_alloc() - allocate tx tso descriptor pool |
| * @soc: Handle to DP SoC structure |
| * @pool_id: tso descriptor pool id |
| * @num_elem: number of element |
| * |
| * Return: QDF_STATUS_SUCCESS |
| */ |
| #if defined(FEATURE_TSO) |
| QDF_STATUS dp_tx_tso_desc_pool_alloc(struct dp_soc *soc, uint8_t pool_id, |
| uint16_t num_elem) |
| { |
| struct dp_tx_tso_seg_pool_s *tso_desc_pool; |
| uint32_t desc_size; |
| |
| tso_desc_pool = &soc->tx_tso_desc[pool_id]; |
| tso_desc_pool->num_free = 0; |
| desc_size = DP_TX_DESC_SIZE(sizeof(struct qdf_tso_seg_elem_t)); |
| if (!dp_is_soc_reinit(soc)) |
| qdf_mem_multi_pages_alloc(soc->osdev, |
| &tso_desc_pool->desc_pages, |
| desc_size, |
| num_elem, 0, true); |
| |
| if (!tso_desc_pool->desc_pages.num_pages) { |
| QDF_TRACE(QDF_MODULE_ID_TXRX, QDF_TRACE_LEVEL_ERROR, |
| FL("Alloc Failed %pK pool_id %d"), |
| soc, pool_id); |
| return QDF_STATUS_E_NOMEM; |
| } |
| |
| tso_desc_pool->freelist = (struct qdf_tso_seg_elem_t *) |
| *tso_desc_pool->desc_pages.cacheable_pages; |
| tso_desc_pool->num_free = num_elem; |
| if (qdf_mem_multi_page_link(soc->osdev, |
| &tso_desc_pool->desc_pages, |
| desc_size, |
| num_elem, true)) { |
| QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, |
| "invalid tso desc allocation - overflow num link"); |
| goto free_tso_desc; |
| } |
| TSO_DEBUG("Number of free descriptors: %u\n", tso_desc_pool->num_free); |
| tso_desc_pool->pool_size = num_elem; |
| qdf_spinlock_create(&tso_desc_pool->lock); |
| |
| return QDF_STATUS_SUCCESS; |
| |
| free_tso_desc: |
| qdf_mem_multi_pages_free(soc->osdev, |
| &tso_desc_pool->desc_pages, 0, true); |
| |
| return QDF_STATUS_E_FAULT; |
| } |
| |
| /** |
| * dp_tx_tso_desc_pool_free() - free tx tso descriptor pool |
| * @soc: Handle to DP SoC structure |
| * @pool_id: extension descriptor pool id |
| * |
| * Return: NONE |
| */ |
| void dp_tx_tso_desc_pool_free(struct dp_soc *soc, uint8_t pool_id) |
| { |
| struct dp_tx_tso_seg_pool_s *tso_desc_pool; |
| |
| tso_desc_pool = &soc->tx_tso_desc[pool_id]; |
| |
| qdf_spin_lock_bh(&tso_desc_pool->lock); |
| |
| qdf_mem_multi_pages_free(soc->osdev, |
| &tso_desc_pool->desc_pages, 0, true); |
| tso_desc_pool->freelist = NULL; |
| tso_desc_pool->num_free = 0; |
| tso_desc_pool->pool_size = 0; |
| qdf_spin_unlock_bh(&tso_desc_pool->lock); |
| qdf_spinlock_destroy(&tso_desc_pool->lock); |
| return; |
| } |
| /** |
| * dp_tx_tso_num_seg_pool_alloc() - Allocate descriptors that tracks the |
| * fragments in each tso segment |
| * |
| * @soc: handle to dp soc structure |
| * @pool_id: descriptor pool id |
| * @num_elem: total number of descriptors to be allocated |
| */ |
| QDF_STATUS dp_tx_tso_num_seg_pool_alloc(struct dp_soc *soc, uint8_t pool_id, |
| uint16_t num_elem) |
| { |
| struct dp_tx_tso_num_seg_pool_s *tso_num_seg_pool; |
| uint32_t desc_size; |
| |
| tso_num_seg_pool = &soc->tx_tso_num_seg[pool_id]; |
| tso_num_seg_pool->num_free = 0; |
| desc_size = DP_TX_DESC_SIZE(sizeof(struct qdf_tso_num_seg_elem_t)); |
| if (!dp_is_soc_reinit(soc)) |
| qdf_mem_multi_pages_alloc(soc->osdev, |
| &tso_num_seg_pool->desc_pages, |
| desc_size, |
| num_elem, 0, true); |
| if (!tso_num_seg_pool->desc_pages.num_pages) { |
| QDF_TRACE(QDF_MODULE_ID_TXRX, QDF_TRACE_LEVEL_ERROR, |
| FL("Alloc Failed %pK pool_id %d"), |
| soc, pool_id); |
| return QDF_STATUS_E_NOMEM; |
| } |
| |
| if (qdf_mem_multi_page_link(soc->osdev, |
| &tso_num_seg_pool->desc_pages, |
| desc_size, |
| num_elem, true)) { |
| QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, |
| "invalid tso desc allocation - overflow num link"); |
| goto fail; |
| } |
| |
| tso_num_seg_pool->freelist = (struct qdf_tso_num_seg_elem_t *) |
| *tso_num_seg_pool->desc_pages.cacheable_pages; |
| tso_num_seg_pool->num_free = num_elem; |
| tso_num_seg_pool->num_seg_pool_size = num_elem; |
| |
| qdf_spinlock_create(&tso_num_seg_pool->lock); |
| |
| return QDF_STATUS_SUCCESS; |
| |
| fail: |
| qdf_mem_multi_pages_free(soc->osdev, |
| &tso_num_seg_pool->desc_pages, 0, true); |
| |
| return QDF_STATUS_E_NOMEM; |
| } |
| |
| /** |
| * dp_tx_tso_num_seg_pool_free() - free pool of descriptors that tracks |
| * the fragments in tso segment |
| * |
| * |
| * @soc: handle to dp soc structure |
| * @pool_id: descriptor pool_id |
| */ |
| void dp_tx_tso_num_seg_pool_free(struct dp_soc *soc, uint8_t pool_id) |
| { |
| struct dp_tx_tso_num_seg_pool_s *tso_num_seg_pool; |
| |
| tso_num_seg_pool = &soc->tx_tso_num_seg[pool_id]; |
| qdf_spin_lock_bh(&tso_num_seg_pool->lock); |
| |
| qdf_mem_multi_pages_free(soc->osdev, |
| &tso_num_seg_pool->desc_pages, 0, true); |
| tso_num_seg_pool->freelist = NULL; |
| tso_num_seg_pool->num_free = 0; |
| tso_num_seg_pool->num_seg_pool_size = 0; |
| qdf_spin_unlock_bh(&tso_num_seg_pool->lock); |
| qdf_spinlock_destroy(&tso_num_seg_pool->lock); |
| return; |
| } |
| |
| #else |
| QDF_STATUS dp_tx_tso_desc_pool_alloc(struct dp_soc *soc, uint8_t pool_id, |
| uint16_t num_elem) |
| { |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| void dp_tx_tso_desc_pool_free(struct dp_soc *soc, uint8_t pool_id) |
| { |
| return; |
| } |
| |
| QDF_STATUS dp_tx_tso_num_seg_pool_alloc(struct dp_soc *soc, uint8_t pool_id, |
| uint16_t num_elem) |
| { |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| void dp_tx_tso_num_seg_pool_free(struct dp_soc *soc, uint8_t pool_id) |
| { |
| return; |
| } |
| #endif |