| /* Copyright (c) 2012-2017, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <linux/delay.h> |
| #include <linux/device.h> |
| #include <linux/dmapool.h> |
| #include <linux/list.h> |
| #include <linux/netdevice.h> |
| #include "ipa_i.h" |
| #include "ipa_trace.h" |
| |
| #define IPA_WAN_AGGR_PKT_CNT 5 |
| #define IPA_LAST_DESC_CNT 0xFFFF |
| #define POLLING_INACTIVITY_RX 40 |
| #define POLLING_INACTIVITY_TX 40 |
| #define POLLING_MIN_SLEEP_TX 400 |
| #define POLLING_MAX_SLEEP_TX 500 |
| /* 8K less 1 nominal MTU (1500 bytes) rounded to units of KB */ |
| #define IPA_MTU 1500 |
| #define IPA_GENERIC_AGGR_BYTE_LIMIT 6 |
| #define IPA_GENERIC_AGGR_TIME_LIMIT 1 |
| #define IPA_GENERIC_AGGR_PKT_LIMIT 0 |
| |
| #define IPA_GENERIC_RX_BUFF_BASE_SZ 8192 |
| #define IPA_REAL_GENERIC_RX_BUFF_SZ(X) (SKB_DATA_ALIGN(\ |
| (X) + NET_SKB_PAD) +\ |
| SKB_DATA_ALIGN(sizeof(struct skb_shared_info))) |
| #define IPA_GENERIC_RX_BUFF_SZ(X) ((X) -\ |
| (IPA_REAL_GENERIC_RX_BUFF_SZ(X) - (X))) |
| #define IPA_GENERIC_RX_BUFF_LIMIT (\ |
| IPA_REAL_GENERIC_RX_BUFF_SZ(\ |
| IPA_GENERIC_RX_BUFF_BASE_SZ) -\ |
| IPA_GENERIC_RX_BUFF_BASE_SZ) |
| |
| #define IPA_RX_BUFF_CLIENT_HEADROOM 256 |
| |
| /* less 1 nominal MTU (1500 bytes) rounded to units of KB */ |
| #define IPA_ADJUST_AGGR_BYTE_LIMIT(X) (((X) - IPA_MTU)/1000) |
| |
| #define IPA_WLAN_RX_POOL_SZ 100 |
| #define IPA_WLAN_RX_POOL_SZ_LOW_WM 5 |
| #define IPA_WLAN_RX_BUFF_SZ 2048 |
| #define IPA_WLAN_COMM_RX_POOL_LOW 100 |
| #define IPA_WLAN_COMM_RX_POOL_HIGH 900 |
| |
| #define IPA_ODU_RX_BUFF_SZ 2048 |
| #define IPA_ODU_RX_POOL_SZ 32 |
| #define IPA_SIZE_DL_CSUM_META_TRAILER 8 |
| |
| #define IPA_HEADROOM 128 |
| |
| static struct sk_buff *ipa_get_skb_ipa_rx(unsigned int len, gfp_t flags); |
| static void ipa_replenish_wlan_rx_cache(struct ipa_sys_context *sys); |
| static void ipa_replenish_rx_cache(struct ipa_sys_context *sys); |
| static void replenish_rx_work_func(struct work_struct *work); |
| static void ipa_wq_handle_rx(struct work_struct *work); |
| static void ipa_wq_handle_tx(struct work_struct *work); |
| static void ipa_wq_rx_common(struct ipa_sys_context *sys, u32 size); |
| static void ipa_wlan_wq_rx_common(struct ipa_sys_context *sys, |
| u32 size); |
| static int ipa_assign_policy(struct ipa_sys_connect_params *in, |
| struct ipa_sys_context *sys); |
| static void ipa_cleanup_rx(struct ipa_sys_context *sys); |
| static void ipa_wq_rx_avail(struct work_struct *work); |
| static void ipa_alloc_wlan_rx_common_cache(u32 size); |
| static void ipa_cleanup_wlan_rx_common_cache(void); |
| static void ipa_wq_repl_rx(struct work_struct *work); |
| static void ipa_dma_memcpy_notify(struct ipa_sys_context *sys, |
| struct sps_iovec *iovec); |
| |
| static u32 ipa_adjust_ra_buff_base_sz(u32 aggr_byte_limit); |
| static void ipa_fast_replenish_rx_cache(struct ipa_sys_context *sys); |
| |
| static void ipa_wq_write_done_common(struct ipa_sys_context *sys, u32 cnt) |
| { |
| struct ipa_tx_pkt_wrapper *tx_pkt_expected; |
| int i; |
| |
| for (i = 0; i < cnt; i++) { |
| spin_lock_bh(&sys->spinlock); |
| if (unlikely(list_empty(&sys->head_desc_list))) { |
| spin_unlock_bh(&sys->spinlock); |
| return; |
| } |
| tx_pkt_expected = list_first_entry(&sys->head_desc_list, |
| struct ipa_tx_pkt_wrapper, |
| link); |
| list_del(&tx_pkt_expected->link); |
| sys->len--; |
| spin_unlock_bh(&sys->spinlock); |
| if (!tx_pkt_expected->no_unmap_dma) { |
| if (tx_pkt_expected->type != IPA_DATA_DESC_SKB_PAGED) { |
| dma_unmap_single(ipa_ctx->pdev, |
| tx_pkt_expected->mem.phys_base, |
| tx_pkt_expected->mem.size, |
| DMA_TO_DEVICE); |
| } else { |
| dma_unmap_page(ipa_ctx->pdev, |
| tx_pkt_expected->mem.phys_base, |
| tx_pkt_expected->mem.size, |
| DMA_TO_DEVICE); |
| } |
| } |
| if (tx_pkt_expected->callback) |
| tx_pkt_expected->callback(tx_pkt_expected->user1, |
| tx_pkt_expected->user2); |
| if (tx_pkt_expected->cnt > 1 && |
| tx_pkt_expected->cnt != IPA_LAST_DESC_CNT) { |
| if (tx_pkt_expected->cnt == IPA_NUM_DESC_PER_SW_TX) { |
| dma_pool_free(ipa_ctx->dma_pool, |
| tx_pkt_expected->mult.base, |
| tx_pkt_expected->mult.phys_base); |
| } else { |
| dma_unmap_single(ipa_ctx->pdev, |
| tx_pkt_expected->mult.phys_base, |
| tx_pkt_expected->mult.size, |
| DMA_TO_DEVICE); |
| kfree(tx_pkt_expected->mult.base); |
| } |
| } |
| kmem_cache_free(ipa_ctx->tx_pkt_wrapper_cache, tx_pkt_expected); |
| } |
| } |
| |
| static void ipa_wq_write_done_status(int src_pipe) |
| { |
| struct ipa_tx_pkt_wrapper *tx_pkt_expected; |
| struct ipa_sys_context *sys; |
| u32 cnt; |
| |
| WARN_ON(src_pipe >= ipa_ctx->ipa_num_pipes); |
| |
| if (!ipa_ctx->ep[src_pipe].status.status_en) |
| return; |
| |
| sys = ipa_ctx->ep[src_pipe].sys; |
| if (!sys) |
| return; |
| |
| spin_lock_bh(&sys->spinlock); |
| if (unlikely(list_empty(&sys->head_desc_list))) { |
| spin_unlock_bh(&sys->spinlock); |
| return; |
| } |
| tx_pkt_expected = list_first_entry(&sys->head_desc_list, |
| struct ipa_tx_pkt_wrapper, |
| link); |
| cnt = tx_pkt_expected->cnt; |
| spin_unlock_bh(&sys->spinlock); |
| ipa_wq_write_done_common(sys, cnt); |
| } |
| |
| /** |
| * ipa_write_done() - this function will be (eventually) called when a Tx |
| * operation is complete |
| * * @work: work_struct used by the work queue |
| * |
| * Will be called in deferred context. |
| * - invoke the callback supplied by the client who sent this command |
| * - iterate over all packets and validate that |
| * the order for sent packet is the same as expected |
| * - delete all the tx packet descriptors from the system |
| * pipe context (not needed anymore) |
| * - return the tx buffer back to dma_pool |
| */ |
| static void ipa_wq_write_done(struct work_struct *work) |
| { |
| struct ipa_tx_pkt_wrapper *tx_pkt; |
| u32 cnt; |
| struct ipa_sys_context *sys; |
| |
| tx_pkt = container_of(work, struct ipa_tx_pkt_wrapper, work); |
| cnt = tx_pkt->cnt; |
| sys = tx_pkt->sys; |
| |
| ipa_wq_write_done_common(sys, cnt); |
| } |
| |
| static int ipa_handle_tx_core(struct ipa_sys_context *sys, bool process_all, |
| bool in_poll_state) |
| { |
| struct sps_iovec iov; |
| int ret; |
| int cnt = 0; |
| |
| while ((in_poll_state ? atomic_read(&sys->curr_polling_state) : |
| !atomic_read(&sys->curr_polling_state))) { |
| if (cnt && !process_all) |
| break; |
| ret = sps_get_iovec(sys->ep->ep_hdl, &iov); |
| if (ret) { |
| IPAERR("sps_get_iovec failed %d\n", ret); |
| break; |
| } |
| |
| if (iov.addr == 0) |
| break; |
| |
| ipa_wq_write_done_common(sys, 1); |
| cnt++; |
| }; |
| |
| return cnt; |
| } |
| |
| /** |
| * ipa_tx_switch_to_intr_mode() - Operate the Tx data path in interrupt mode |
| */ |
| static void ipa_tx_switch_to_intr_mode(struct ipa_sys_context *sys) |
| { |
| int ret; |
| |
| if (!atomic_read(&sys->curr_polling_state)) { |
| IPAERR("already in intr mode\n"); |
| goto fail; |
| } |
| |
| ret = sps_get_config(sys->ep->ep_hdl, &sys->ep->connect); |
| if (ret) { |
| IPAERR("sps_get_config() failed %d\n", ret); |
| goto fail; |
| } |
| sys->event.options = SPS_O_EOT; |
| ret = sps_register_event(sys->ep->ep_hdl, &sys->event); |
| if (ret) { |
| IPAERR("sps_register_event() failed %d\n", ret); |
| goto fail; |
| } |
| sys->ep->connect.options = |
| SPS_O_AUTO_ENABLE | SPS_O_ACK_TRANSFERS | SPS_O_EOT; |
| ret = sps_set_config(sys->ep->ep_hdl, &sys->ep->connect); |
| if (ret) { |
| IPAERR("sps_set_config() failed %d\n", ret); |
| goto fail; |
| } |
| atomic_set(&sys->curr_polling_state, 0); |
| ipa_handle_tx_core(sys, true, false); |
| return; |
| |
| fail: |
| queue_delayed_work(sys->wq, &sys->switch_to_intr_work, |
| msecs_to_jiffies(1)); |
| } |
| |
| static void ipa_handle_tx(struct ipa_sys_context *sys) |
| { |
| int inactive_cycles = 0; |
| int cnt; |
| |
| IPA_ACTIVE_CLIENTS_INC_SIMPLE(); |
| do { |
| cnt = ipa_handle_tx_core(sys, true, true); |
| if (cnt == 0) { |
| inactive_cycles++; |
| usleep_range(POLLING_MIN_SLEEP_TX, |
| POLLING_MAX_SLEEP_TX); |
| } else { |
| inactive_cycles = 0; |
| } |
| } while (inactive_cycles <= POLLING_INACTIVITY_TX); |
| |
| ipa_tx_switch_to_intr_mode(sys); |
| IPA_ACTIVE_CLIENTS_DEC_SIMPLE(); |
| } |
| |
| static void ipa_wq_handle_tx(struct work_struct *work) |
| { |
| struct ipa_sys_context *sys; |
| |
| sys = container_of(work, struct ipa_sys_context, work); |
| |
| ipa_handle_tx(sys); |
| } |
| |
| /** |
| * ipa_send_one() - Send a single descriptor |
| * @sys: system pipe context |
| * @desc: descriptor to send |
| * @in_atomic: whether caller is in atomic context |
| * |
| * - Allocate tx_packet wrapper |
| * - transfer data to the IPA |
| * - after the transfer was done the SPS will |
| * notify the sending user via ipa_sps_irq_comp_tx() |
| * |
| * Return codes: 0: success, -EFAULT: failure |
| */ |
| int ipa_send_one(struct ipa_sys_context *sys, struct ipa_desc *desc, |
| bool in_atomic) |
| { |
| struct ipa_tx_pkt_wrapper *tx_pkt; |
| int result; |
| u16 sps_flags = SPS_IOVEC_FLAG_EOT; |
| dma_addr_t dma_address; |
| u16 len; |
| u32 mem_flag = GFP_ATOMIC; |
| struct sps_iovec iov; |
| int ret; |
| |
| if (unlikely(!in_atomic)) |
| mem_flag = GFP_KERNEL; |
| |
| tx_pkt = kmem_cache_zalloc(ipa_ctx->tx_pkt_wrapper_cache, mem_flag); |
| if (!tx_pkt) { |
| IPAERR("failed to alloc tx wrapper\n"); |
| goto fail_mem_alloc; |
| } |
| |
| if (!desc->dma_address_valid) { |
| dma_address = dma_map_single(ipa_ctx->pdev, desc->pyld, |
| desc->len, DMA_TO_DEVICE); |
| } else { |
| dma_address = desc->dma_address; |
| tx_pkt->no_unmap_dma = true; |
| } |
| if (dma_mapping_error(ipa_ctx->pdev, dma_address)) { |
| IPAERR("dma_map_single failed\n"); |
| goto fail_dma_map; |
| } |
| |
| INIT_LIST_HEAD(&tx_pkt->link); |
| tx_pkt->type = desc->type; |
| tx_pkt->cnt = 1; /* only 1 desc in this "set" */ |
| |
| tx_pkt->mem.phys_base = dma_address; |
| tx_pkt->mem.base = desc->pyld; |
| tx_pkt->mem.size = desc->len; |
| tx_pkt->sys = sys; |
| tx_pkt->callback = desc->callback; |
| tx_pkt->user1 = desc->user1; |
| tx_pkt->user2 = desc->user2; |
| |
| /* |
| * Special treatment for immediate commands, where the structure of the |
| * descriptor is different |
| */ |
| if (desc->type == IPA_IMM_CMD_DESC) { |
| sps_flags |= SPS_IOVEC_FLAG_IMME; |
| len = desc->opcode; |
| IPADBG("sending cmd=%d pyld_len=%d sps_flags=%x\n", |
| desc->opcode, desc->len, sps_flags); |
| IPA_DUMP_BUFF(desc->pyld, dma_address, desc->len); |
| } else { |
| len = desc->len; |
| } |
| |
| INIT_WORK(&tx_pkt->work, ipa_wq_write_done); |
| |
| spin_lock_bh(&sys->spinlock); |
| list_add_tail(&tx_pkt->link, &sys->head_desc_list); |
| if (sys->policy == IPA_POLICY_NOINTR_MODE) { |
| do { |
| ret = sps_get_iovec(sys->ep->ep_hdl, &iov); |
| if (ret) { |
| IPADBG("sps_get_iovec failed %d\n", ret); |
| break; |
| } |
| if ((iov.addr == 0x0) && (iov.size == 0x0)) |
| break; |
| } while (1); |
| } |
| result = sps_transfer_one(sys->ep->ep_hdl, dma_address, len, tx_pkt, |
| sps_flags); |
| if (result) { |
| IPAERR("sps_transfer_one failed rc=%d\n", result); |
| goto fail_sps_send; |
| } |
| |
| spin_unlock_bh(&sys->spinlock); |
| |
| return 0; |
| |
| fail_sps_send: |
| list_del(&tx_pkt->link); |
| spin_unlock_bh(&sys->spinlock); |
| dma_unmap_single(ipa_ctx->pdev, dma_address, desc->len, DMA_TO_DEVICE); |
| fail_dma_map: |
| kmem_cache_free(ipa_ctx->tx_pkt_wrapper_cache, tx_pkt); |
| fail_mem_alloc: |
| return -EFAULT; |
| } |
| |
| /** |
| * ipa_send() - Send multiple descriptors in one HW transaction |
| * @sys: system pipe context |
| * @num_desc: number of packets |
| * @desc: packets to send (may be immediate command or data) |
| * @in_atomic: whether caller is in atomic context |
| * |
| * This function is used for system-to-bam connection. |
| * - SPS driver expect struct sps_transfer which will contain all the data |
| * for a transaction |
| * - ipa_tx_pkt_wrapper will be used for each ipa |
| * descriptor (allocated from wrappers cache) |
| * - The wrapper struct will be configured for each ipa-desc payload and will |
| * contain information which will be later used by the user callbacks |
| * - each transfer will be made by calling to sps_transfer() |
| * - Each packet (command or data) that will be sent will also be saved in |
| * ipa_sys_context for later check that all data was sent |
| * |
| * Return codes: 0: success, -EFAULT: failure |
| */ |
| int ipa_send(struct ipa_sys_context *sys, u32 num_desc, struct ipa_desc *desc, |
| bool in_atomic) |
| { |
| struct ipa_tx_pkt_wrapper *tx_pkt; |
| struct ipa_tx_pkt_wrapper *next_pkt; |
| struct sps_transfer transfer = { 0 }; |
| struct sps_iovec *iovec; |
| dma_addr_t dma_addr; |
| int i = 0; |
| int j; |
| int result; |
| int fail_dma_wrap = 0; |
| uint size = num_desc * sizeof(struct sps_iovec); |
| u32 mem_flag = GFP_ATOMIC; |
| struct sps_iovec iov; |
| int ret; |
| |
| if (unlikely(!in_atomic)) |
| mem_flag = GFP_KERNEL; |
| |
| if (num_desc == IPA_NUM_DESC_PER_SW_TX) { |
| transfer.iovec = dma_pool_alloc(ipa_ctx->dma_pool, mem_flag, |
| &dma_addr); |
| if (!transfer.iovec) { |
| IPAERR("fail to alloc dma mem for sps xfr buff\n"); |
| return -EFAULT; |
| } |
| } else { |
| transfer.iovec = kmalloc(size, mem_flag); |
| if (!transfer.iovec) { |
| IPAERR("fail to alloc mem for sps xfr buff "); |
| IPAERR("num_desc = %d size = %d\n", num_desc, size); |
| return -EFAULT; |
| } |
| dma_addr = dma_map_single(ipa_ctx->pdev, |
| transfer.iovec, size, DMA_TO_DEVICE); |
| if (dma_mapping_error(ipa_ctx->pdev, dma_addr)) { |
| IPAERR("dma_map_single failed for sps xfr buff\n"); |
| kfree(transfer.iovec); |
| return -EFAULT; |
| } |
| } |
| |
| transfer.iovec_phys = dma_addr; |
| transfer.iovec_count = num_desc; |
| spin_lock_bh(&sys->spinlock); |
| |
| for (i = 0; i < num_desc; i++) { |
| fail_dma_wrap = 0; |
| tx_pkt = kmem_cache_zalloc(ipa_ctx->tx_pkt_wrapper_cache, |
| mem_flag); |
| if (!tx_pkt) { |
| IPAERR("failed to alloc tx wrapper\n"); |
| goto failure; |
| } |
| /* |
| * first desc of set is "special" as it holds the count and |
| * other info |
| */ |
| if (i == 0) { |
| transfer.user = tx_pkt; |
| tx_pkt->mult.phys_base = dma_addr; |
| tx_pkt->mult.base = transfer.iovec; |
| tx_pkt->mult.size = size; |
| tx_pkt->cnt = num_desc; |
| INIT_WORK(&tx_pkt->work, ipa_wq_write_done); |
| } |
| |
| iovec = &transfer.iovec[i]; |
| iovec->flags = 0; |
| |
| INIT_LIST_HEAD(&tx_pkt->link); |
| tx_pkt->type = desc[i].type; |
| |
| if (desc[i].type != IPA_DATA_DESC_SKB_PAGED) { |
| tx_pkt->mem.base = desc[i].pyld; |
| tx_pkt->mem.size = desc[i].len; |
| |
| if (!desc[i].dma_address_valid) { |
| tx_pkt->mem.phys_base = |
| dma_map_single(ipa_ctx->pdev, |
| tx_pkt->mem.base, |
| tx_pkt->mem.size, |
| DMA_TO_DEVICE); |
| |
| if (dma_mapping_error(ipa_ctx->pdev, |
| tx_pkt->mem.phys_base)) { |
| IPAERR("dma_map_single "); |
| IPAERR("failed\n"); |
| fail_dma_wrap = 1; |
| goto failure; |
| } |
| |
| } else { |
| tx_pkt->mem.phys_base = desc[i].dma_address; |
| tx_pkt->no_unmap_dma = true; |
| } |
| } else { |
| tx_pkt->mem.base = desc[i].frag; |
| tx_pkt->mem.size = desc[i].len; |
| |
| if (!desc[i].dma_address_valid) { |
| tx_pkt->mem.phys_base = |
| skb_frag_dma_map(ipa_ctx->pdev, |
| desc[i].frag, |
| 0, tx_pkt->mem.size, |
| DMA_TO_DEVICE); |
| } else { |
| tx_pkt->mem.phys_base = desc[i].dma_address; |
| tx_pkt->no_unmap_dma = true; |
| } |
| } |
| |
| if (!tx_pkt->mem.phys_base) { |
| IPAERR("failed to alloc tx wrapper\n"); |
| fail_dma_wrap = 1; |
| goto failure; |
| } |
| |
| tx_pkt->sys = sys; |
| tx_pkt->callback = desc[i].callback; |
| tx_pkt->user1 = desc[i].user1; |
| tx_pkt->user2 = desc[i].user2; |
| |
| /* |
| * Point the iovec to the buffer and |
| * add this packet to system pipe context. |
| */ |
| iovec->addr = tx_pkt->mem.phys_base; |
| list_add_tail(&tx_pkt->link, &sys->head_desc_list); |
| |
| /* |
| * Special treatment for immediate commands, where the structure |
| * of the descriptor is different |
| */ |
| if (desc[i].type == IPA_IMM_CMD_DESC) { |
| iovec->size = desc[i].opcode; |
| iovec->flags |= SPS_IOVEC_FLAG_IMME; |
| IPA_DUMP_BUFF(desc[i].pyld, |
| tx_pkt->mem.phys_base, desc[i].len); |
| } else { |
| iovec->size = desc[i].len; |
| } |
| |
| if (i == (num_desc - 1)) { |
| iovec->flags |= SPS_IOVEC_FLAG_EOT; |
| /* "mark" the last desc */ |
| tx_pkt->cnt = IPA_LAST_DESC_CNT; |
| } |
| } |
| |
| if (sys->policy == IPA_POLICY_NOINTR_MODE) { |
| do { |
| ret = sps_get_iovec(sys->ep->ep_hdl, &iov); |
| if (ret) { |
| IPADBG("sps_get_iovec failed %d\n", ret); |
| break; |
| } |
| if ((iov.addr == 0x0) && (iov.size == 0x0)) |
| break; |
| } while (1); |
| } |
| result = sps_transfer(sys->ep->ep_hdl, &transfer); |
| if (result) { |
| IPAERR("sps_transfer failed rc=%d\n", result); |
| goto failure; |
| } |
| |
| spin_unlock_bh(&sys->spinlock); |
| return 0; |
| |
| failure: |
| tx_pkt = transfer.user; |
| for (j = 0; j < i; j++) { |
| next_pkt = list_next_entry(tx_pkt, link); |
| list_del(&tx_pkt->link); |
| if (desc[j].type != IPA_DATA_DESC_SKB_PAGED) { |
| dma_unmap_single(ipa_ctx->pdev, tx_pkt->mem.phys_base, |
| tx_pkt->mem.size, |
| DMA_TO_DEVICE); |
| } else { |
| dma_unmap_page(ipa_ctx->pdev, tx_pkt->mem.phys_base, |
| tx_pkt->mem.size, |
| DMA_TO_DEVICE); |
| } |
| kmem_cache_free(ipa_ctx->tx_pkt_wrapper_cache, tx_pkt); |
| tx_pkt = next_pkt; |
| } |
| if (j < num_desc) |
| /* last desc failed */ |
| if (fail_dma_wrap) |
| kmem_cache_free(ipa_ctx->tx_pkt_wrapper_cache, tx_pkt); |
| if (transfer.iovec_phys) { |
| if (num_desc == IPA_NUM_DESC_PER_SW_TX) { |
| dma_pool_free(ipa_ctx->dma_pool, transfer.iovec, |
| transfer.iovec_phys); |
| } else { |
| dma_unmap_single(ipa_ctx->pdev, transfer.iovec_phys, |
| size, DMA_TO_DEVICE); |
| kfree(transfer.iovec); |
| } |
| } |
| spin_unlock_bh(&sys->spinlock); |
| return -EFAULT; |
| } |
| |
| /** |
| * ipa_sps_irq_cmd_ack - callback function which will be called by SPS driver |
| * after an immediate command is complete. |
| * @user1: pointer to the descriptor of the transfer |
| * @user2: |
| * |
| * Complete the immediate commands completion object, this will release the |
| * thread which waits on this completion object (ipa_send_cmd()) |
| */ |
| static void ipa_sps_irq_cmd_ack(void *user1, int user2) |
| { |
| struct ipa_desc *desc = (struct ipa_desc *)user1; |
| |
| if (!desc) { |
| IPAERR("desc is NULL\n"); |
| WARN_ON(1); |
| return; |
| } |
| IPADBG("got ack for cmd=%d\n", desc->opcode); |
| complete(&desc->xfer_done); |
| } |
| |
| /** |
| * ipa_send_cmd - send immediate commands |
| * @num_desc: number of descriptors within the desc struct |
| * @descr: descriptor structure |
| * |
| * Function will block till command gets ACK from IPA HW, caller needs |
| * to free any resources it allocated after function returns |
| * The callback in ipa_desc should not be set by the caller |
| * for this function. |
| */ |
| int ipa_send_cmd(u16 num_desc, struct ipa_desc *descr) |
| { |
| struct ipa_desc *desc; |
| int result = 0; |
| struct ipa_sys_context *sys; |
| int ep_idx; |
| |
| IPADBG("sending command\n"); |
| |
| ep_idx = ipa2_get_ep_mapping(IPA_CLIENT_APPS_CMD_PROD); |
| if (-1 == ep_idx) { |
| IPAERR("Client %u is not mapped\n", |
| IPA_CLIENT_APPS_CMD_PROD); |
| return -EFAULT; |
| } |
| sys = ipa_ctx->ep[ep_idx].sys; |
| |
| IPA_ACTIVE_CLIENTS_INC_SIMPLE(); |
| |
| if (num_desc == 1) { |
| init_completion(&descr->xfer_done); |
| |
| if (descr->callback || descr->user1) |
| WARN_ON(1); |
| |
| descr->callback = ipa_sps_irq_cmd_ack; |
| descr->user1 = descr; |
| if (ipa_send_one(sys, descr, true)) { |
| IPAERR("fail to send immediate command\n"); |
| result = -EFAULT; |
| goto bail; |
| } |
| wait_for_completion(&descr->xfer_done); |
| } else { |
| desc = &descr[num_desc - 1]; |
| init_completion(&desc->xfer_done); |
| |
| if (desc->callback || desc->user1) |
| WARN_ON(1); |
| |
| desc->callback = ipa_sps_irq_cmd_ack; |
| desc->user1 = desc; |
| if (ipa_send(sys, num_desc, descr, true)) { |
| IPAERR("fail to send multiple immediate command set\n"); |
| result = -EFAULT; |
| goto bail; |
| } |
| wait_for_completion(&desc->xfer_done); |
| } |
| |
| bail: |
| IPA_ACTIVE_CLIENTS_DEC_SIMPLE(); |
| return result; |
| } |
| |
| /** |
| * ipa_sps_irq_tx_notify() - Callback function which will be called by |
| * the SPS driver to start a Tx poll operation. |
| * Called in an interrupt context. |
| * @notify: SPS driver supplied notification struct |
| * |
| * This function defer the work for this event to the tx workqueue. |
| */ |
| static void ipa_sps_irq_tx_notify(struct sps_event_notify *notify) |
| { |
| struct ipa_sys_context *sys = (struct ipa_sys_context *)notify->user; |
| int ret; |
| |
| IPADBG("event %d notified\n", notify->event_id); |
| |
| switch (notify->event_id) { |
| case SPS_EVENT_EOT: |
| if (IPA_CLIENT_IS_APPS_CONS(sys->ep->client)) |
| atomic_set(&ipa_ctx->sps_pm.eot_activity, 1); |
| if (!atomic_read(&sys->curr_polling_state)) { |
| ret = sps_get_config(sys->ep->ep_hdl, |
| &sys->ep->connect); |
| if (ret) { |
| IPAERR("sps_get_config() failed %d\n", ret); |
| break; |
| } |
| sys->ep->connect.options = SPS_O_AUTO_ENABLE | |
| SPS_O_ACK_TRANSFERS | SPS_O_POLL; |
| ret = sps_set_config(sys->ep->ep_hdl, |
| &sys->ep->connect); |
| if (ret) { |
| IPAERR("sps_set_config() failed %d\n", ret); |
| break; |
| } |
| atomic_set(&sys->curr_polling_state, 1); |
| queue_work(sys->wq, &sys->work); |
| } |
| break; |
| default: |
| IPAERR("received unexpected event id %d\n", notify->event_id); |
| } |
| } |
| |
| /** |
| * ipa_sps_irq_tx_no_aggr_notify() - Callback function which will be called by |
| * the SPS driver after a Tx operation is complete. |
| * Called in an interrupt context. |
| * @notify: SPS driver supplied notification struct |
| * |
| * This function defer the work for this event to the tx workqueue. |
| * This event will be later handled by ipa_write_done. |
| */ |
| static void ipa_sps_irq_tx_no_aggr_notify(struct sps_event_notify *notify) |
| { |
| struct ipa_tx_pkt_wrapper *tx_pkt; |
| |
| IPADBG("event %d notified\n", notify->event_id); |
| |
| switch (notify->event_id) { |
| case SPS_EVENT_EOT: |
| tx_pkt = notify->data.transfer.user; |
| if (IPA_CLIENT_IS_APPS_CONS(tx_pkt->sys->ep->client)) |
| atomic_set(&ipa_ctx->sps_pm.eot_activity, 1); |
| queue_work(tx_pkt->sys->wq, &tx_pkt->work); |
| break; |
| default: |
| IPAERR("received unexpected event id %d\n", notify->event_id); |
| } |
| } |
| |
| /** |
| * ipa_poll_pkt() - Poll packet from SPS BAM |
| * return 0 to caller on poll successfully |
| * else -EIO |
| * |
| */ |
| static int ipa_poll_pkt(struct ipa_sys_context *sys, |
| struct sps_iovec *iov) |
| { |
| int ret; |
| |
| ret = sps_get_iovec(sys->ep->ep_hdl, iov); |
| if (ret) { |
| IPAERR("sps_get_iovec failed %d\n", ret); |
| return ret; |
| } |
| |
| if (iov->addr == 0) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| /** |
| * ipa_handle_rx_core() - The core functionality of packet reception. This |
| * function is read from multiple code paths. |
| * |
| * All the packets on the Rx data path are received on the IPA_A5_LAN_WAN_IN |
| * endpoint. The function runs as long as there are packets in the pipe. |
| * For each packet: |
| * - Disconnect the packet from the system pipe linked list |
| * - Unmap the packets skb, make it non DMAable |
| * - Free the packet from the cache |
| * - Prepare a proper skb |
| * - Call the endpoints notify function, passing the skb in the parameters |
| * - Replenish the rx cache |
| */ |
| static int ipa_handle_rx_core(struct ipa_sys_context *sys, bool process_all, |
| bool in_poll_state) |
| { |
| struct sps_iovec iov; |
| int ret; |
| int cnt = 0; |
| |
| while ((in_poll_state ? atomic_read(&sys->curr_polling_state) : |
| !atomic_read(&sys->curr_polling_state))) { |
| if (cnt && !process_all) |
| break; |
| |
| ret = ipa_poll_pkt(sys, &iov); |
| if (ret) |
| break; |
| |
| if (IPA_CLIENT_IS_MEMCPY_DMA_CONS(sys->ep->client)) |
| ipa_dma_memcpy_notify(sys, &iov); |
| else if (IPA_CLIENT_IS_WLAN_CONS(sys->ep->client)) |
| ipa_wlan_wq_rx_common(sys, iov.size); |
| else |
| ipa_wq_rx_common(sys, iov.size); |
| |
| cnt++; |
| }; |
| |
| return cnt; |
| } |
| |
| /** |
| * ipa_rx_switch_to_intr_mode() - Operate the Rx data path in interrupt mode |
| */ |
| static void ipa_rx_switch_to_intr_mode(struct ipa_sys_context *sys) |
| { |
| int ret; |
| |
| if (!sys->ep || !sys->ep->valid) { |
| IPAERR("EP Not Valid, no need to cleanup.\n"); |
| return; |
| } |
| |
| ret = sps_get_config(sys->ep->ep_hdl, &sys->ep->connect); |
| if (ret) { |
| IPAERR("sps_get_config() failed %d\n", ret); |
| goto fail; |
| } |
| |
| if (!atomic_read(&sys->curr_polling_state) && |
| ((sys->ep->connect.options & SPS_O_EOT) == SPS_O_EOT)) { |
| IPADBG("already in intr mode\n"); |
| return; |
| } |
| |
| if (!atomic_read(&sys->curr_polling_state)) { |
| IPAERR("already in intr mode\n"); |
| goto fail; |
| } |
| |
| sys->event.options = SPS_O_EOT; |
| ret = sps_register_event(sys->ep->ep_hdl, &sys->event); |
| if (ret) { |
| IPAERR("sps_register_event() failed %d\n", ret); |
| goto fail; |
| } |
| sys->ep->connect.options = |
| SPS_O_AUTO_ENABLE | SPS_O_ACK_TRANSFERS | SPS_O_EOT; |
| ret = sps_set_config(sys->ep->ep_hdl, &sys->ep->connect); |
| if (ret) { |
| IPAERR("sps_set_config() failed %d\n", ret); |
| goto fail; |
| } |
| atomic_set(&sys->curr_polling_state, 0); |
| if (!sys->ep->napi_enabled) |
| ipa_handle_rx_core(sys, true, false); |
| ipa_dec_release_wakelock(sys->ep->wakelock_client); |
| return; |
| |
| fail: |
| queue_delayed_work(sys->wq, &sys->switch_to_intr_work, |
| msecs_to_jiffies(1)); |
| } |
| |
| |
| /** |
| * ipa_sps_irq_control() - Function to enable or disable BAM IRQ. |
| */ |
| static void ipa_sps_irq_control(struct ipa_sys_context *sys, bool enable) |
| { |
| int ret; |
| |
| /* |
| * Do not change sps config in case we are in polling mode as this |
| * indicates that sps driver already notified EOT event and sps config |
| * should not change until ipa driver processes the packet. |
| */ |
| if (atomic_read(&sys->curr_polling_state)) { |
| IPADBG("in polling mode, do not change config\n"); |
| return; |
| } |
| |
| if (enable) { |
| ret = sps_get_config(sys->ep->ep_hdl, &sys->ep->connect); |
| if (ret) { |
| IPAERR("sps_get_config() failed %d\n", ret); |
| return; |
| } |
| sys->event.options = SPS_O_EOT; |
| ret = sps_register_event(sys->ep->ep_hdl, &sys->event); |
| if (ret) { |
| IPAERR("sps_register_event() failed %d\n", ret); |
| return; |
| } |
| sys->ep->connect.options = |
| SPS_O_AUTO_ENABLE | SPS_O_ACK_TRANSFERS | SPS_O_EOT; |
| ret = sps_set_config(sys->ep->ep_hdl, &sys->ep->connect); |
| if (ret) { |
| IPAERR("sps_set_config() failed %d\n", ret); |
| return; |
| } |
| } else { |
| ret = sps_get_config(sys->ep->ep_hdl, |
| &sys->ep->connect); |
| if (ret) { |
| IPAERR("sps_get_config() failed %d\n", ret); |
| return; |
| } |
| sys->ep->connect.options = SPS_O_AUTO_ENABLE | |
| SPS_O_ACK_TRANSFERS | SPS_O_POLL; |
| ret = sps_set_config(sys->ep->ep_hdl, |
| &sys->ep->connect); |
| if (ret) { |
| IPAERR("sps_set_config() failed %d\n", ret); |
| return; |
| } |
| } |
| } |
| |
| void ipa_sps_irq_control_all(bool enable) |
| { |
| struct ipa_ep_context *ep; |
| int ipa_ep_idx, client_num; |
| |
| IPADBG("\n"); |
| |
| for (client_num = IPA_CLIENT_CONS; |
| client_num < IPA_CLIENT_MAX; client_num++) { |
| if (!IPA_CLIENT_IS_APPS_CONS(client_num)) |
| continue; |
| |
| ipa_ep_idx = ipa_get_ep_mapping(client_num); |
| if (ipa_ep_idx == -1) { |
| IPAERR("Invalid client.\n"); |
| continue; |
| } |
| ep = &ipa_ctx->ep[ipa_ep_idx]; |
| if (!ep->valid) { |
| IPAERR("EP (%d) not allocated.\n", ipa_ep_idx); |
| continue; |
| } |
| ipa_sps_irq_control(ep->sys, enable); |
| } |
| } |
| |
| /** |
| * ipa_rx_notify() - Callback function which is called by the SPS driver when a |
| * a packet is received |
| * @notify: SPS driver supplied notification information |
| * |
| * Called in an interrupt context, therefore the majority of the work is |
| * deffered using a work queue. |
| * |
| * After receiving a packet, the driver goes to polling mode and keeps pulling |
| * packets until the rx buffer is empty, then it goes back to interrupt mode. |
| * This comes to prevent the CPU from handling too many interrupts when the |
| * throughput is high. |
| */ |
| static void ipa_sps_irq_rx_notify(struct sps_event_notify *notify) |
| { |
| struct ipa_sys_context *sys = (struct ipa_sys_context *)notify->user; |
| int ret; |
| |
| IPADBG("event %d notified\n", notify->event_id); |
| |
| switch (notify->event_id) { |
| case SPS_EVENT_EOT: |
| if (IPA_CLIENT_IS_APPS_CONS(sys->ep->client)) |
| atomic_set(&ipa_ctx->sps_pm.eot_activity, 1); |
| |
| if (atomic_read(&sys->curr_polling_state)) { |
| sys->ep->eot_in_poll_err++; |
| break; |
| } |
| |
| ret = sps_get_config(sys->ep->ep_hdl, |
| &sys->ep->connect); |
| if (ret) { |
| IPAERR("sps_get_config() failed %d\n", ret); |
| break; |
| } |
| sys->ep->connect.options = SPS_O_AUTO_ENABLE | |
| SPS_O_ACK_TRANSFERS | SPS_O_POLL; |
| ret = sps_set_config(sys->ep->ep_hdl, |
| &sys->ep->connect); |
| if (ret) { |
| IPAERR("sps_set_config() failed %d\n", ret); |
| break; |
| } |
| ipa_inc_acquire_wakelock(sys->ep->wakelock_client); |
| atomic_set(&sys->curr_polling_state, 1); |
| trace_intr_to_poll(sys->ep->client); |
| queue_work(sys->wq, &sys->work); |
| break; |
| default: |
| IPAERR("received unexpected event id %d\n", notify->event_id); |
| } |
| } |
| |
| static void switch_to_intr_tx_work_func(struct work_struct *work) |
| { |
| struct delayed_work *dwork; |
| struct ipa_sys_context *sys; |
| |
| dwork = container_of(work, struct delayed_work, work); |
| sys = container_of(dwork, struct ipa_sys_context, switch_to_intr_work); |
| ipa_handle_tx(sys); |
| } |
| |
| /** |
| * ipa_handle_rx() - handle packet reception. This function is executed in the |
| * context of a work queue. |
| * @work: work struct needed by the work queue |
| * |
| * ipa_handle_rx_core() is run in polling mode. After all packets has been |
| * received, the driver switches back to interrupt mode. |
| */ |
| static void ipa_handle_rx(struct ipa_sys_context *sys) |
| { |
| int inactive_cycles = 0; |
| int cnt; |
| |
| IPA_ACTIVE_CLIENTS_INC_SIMPLE(); |
| do { |
| cnt = ipa_handle_rx_core(sys, true, true); |
| if (cnt == 0) { |
| inactive_cycles++; |
| trace_idle_sleep_enter(sys->ep->client); |
| usleep_range(ipa_ctx->ipa_rx_min_timeout_usec, |
| ipa_ctx->ipa_rx_max_timeout_usec); |
| trace_idle_sleep_exit(sys->ep->client); |
| } else { |
| inactive_cycles = 0; |
| } |
| |
| /* if pipe is out of buffers there is no point polling for |
| * completed descs; release the worker so delayed work can |
| * run in a timely manner |
| */ |
| if (sys->len == 0) |
| break; |
| |
| } while (inactive_cycles <= ipa_ctx->ipa_polling_iteration); |
| |
| trace_poll_to_intr(sys->ep->client); |
| ipa_rx_switch_to_intr_mode(sys); |
| IPA_ACTIVE_CLIENTS_DEC_SIMPLE(); |
| } |
| |
| /** |
| * ipa2_rx_poll() - Poll the rx packets from IPA HW. This |
| * function is exectued in the softirq context |
| * |
| * if input budget is zero, the driver switches back to |
| * interrupt mode |
| * |
| * return number of polled packets, on error 0(zero) |
| */ |
| int ipa2_rx_poll(u32 clnt_hdl, int weight) |
| { |
| struct ipa_ep_context *ep; |
| int ret; |
| int cnt = 0; |
| unsigned int delay = 1; |
| struct sps_iovec iov; |
| |
| IPADBG("\n"); |
| if (clnt_hdl >= ipa_ctx->ipa_num_pipes || |
| ipa_ctx->ep[clnt_hdl].valid == 0) { |
| IPAERR("bad parm 0x%x\n", clnt_hdl); |
| return cnt; |
| } |
| |
| ep = &ipa_ctx->ep[clnt_hdl]; |
| while (cnt < weight && |
| atomic_read(&ep->sys->curr_polling_state)) { |
| |
| ret = ipa_poll_pkt(ep->sys, &iov); |
| if (ret) |
| break; |
| |
| ipa_wq_rx_common(ep->sys, iov.size); |
| cnt += IPA_WAN_AGGR_PKT_CNT; |
| }; |
| |
| if (cnt == 0 || cnt < weight) { |
| ep->inactive_cycles++; |
| ep->client_notify(ep->priv, IPA_CLIENT_COMP_NAPI, 0); |
| |
| if (ep->inactive_cycles > 3 || ep->sys->len == 0) { |
| ep->switch_to_intr = true; |
| delay = 0; |
| } else if (cnt < weight) { |
| delay = 0; |
| } |
| queue_delayed_work(ep->sys->wq, |
| &ep->sys->switch_to_intr_work, msecs_to_jiffies(delay)); |
| } else |
| ep->inactive_cycles = 0; |
| |
| return cnt; |
| } |
| |
| static void switch_to_intr_rx_work_func(struct work_struct *work) |
| { |
| struct delayed_work *dwork; |
| struct ipa_sys_context *sys; |
| |
| dwork = container_of(work, struct delayed_work, work); |
| sys = container_of(dwork, struct ipa_sys_context, switch_to_intr_work); |
| |
| if (sys->ep->napi_enabled) { |
| if (sys->ep->switch_to_intr) { |
| ipa_rx_switch_to_intr_mode(sys); |
| IPA_ACTIVE_CLIENTS_DEC_SPECIAL("NAPI"); |
| sys->ep->switch_to_intr = false; |
| sys->ep->inactive_cycles = 0; |
| } else |
| sys->ep->client_notify(sys->ep->priv, |
| IPA_CLIENT_START_POLL, 0); |
| } else |
| ipa_handle_rx(sys); |
| } |
| |
| /** |
| * ipa_update_repl_threshold()- Update the repl_threshold for the client. |
| * |
| * Return value: None. |
| */ |
| void ipa_update_repl_threshold(enum ipa_client_type ipa_client) |
| { |
| int ep_idx; |
| struct ipa_ep_context *ep; |
| |
| /* Check if ep is valid. */ |
| ep_idx = ipa2_get_ep_mapping(ipa_client); |
| if (ep_idx == -1) { |
| IPADBG("Invalid IPA client\n"); |
| return; |
| } |
| |
| ep = &ipa_ctx->ep[ep_idx]; |
| if (!ep->valid) { |
| IPADBG("EP not valid/Not applicable for client.\n"); |
| return; |
| } |
| /* |
| * Determine how many buffers/descriptors remaining will |
| * cause to drop below the yellow WM bar. |
| */ |
| if (ep->sys->rx_buff_sz) |
| ep->rx_replenish_threshold = ipa_get_sys_yellow_wm(ep->sys) |
| / ep->sys->rx_buff_sz; |
| else |
| ep->rx_replenish_threshold = 0; |
| } |
| |
| /** |
| * ipa2_setup_sys_pipe() - Setup an IPA end-point in system-BAM mode and perform |
| * IPA EP configuration |
| * @sys_in: [in] input needed to setup BAM pipe and configure EP |
| * @clnt_hdl: [out] client handle |
| * |
| * - configure the end-point registers with the supplied |
| * parameters from the user. |
| * - call SPS APIs to create a system-to-bam connection with IPA. |
| * - allocate descriptor FIFO |
| * - register callback function(ipa_sps_irq_rx_notify or |
| * ipa_sps_irq_tx_notify - depends on client type) in case the driver is |
| * not configured to pulling mode |
| * |
| * Returns: 0 on success, negative on failure |
| */ |
| int ipa2_setup_sys_pipe(struct ipa_sys_connect_params *sys_in, u32 *clnt_hdl) |
| { |
| struct ipa_ep_context *ep; |
| int ipa_ep_idx; |
| int result = -EINVAL; |
| dma_addr_t dma_addr; |
| char buff[IPA_RESOURCE_NAME_MAX]; |
| struct iommu_domain *smmu_domain; |
| |
| if (unlikely(!ipa_ctx)) { |
| IPAERR("IPA driver was not initialized\n"); |
| return -EINVAL; |
| } |
| |
| if (sys_in == NULL || clnt_hdl == NULL) { |
| IPAERR("NULL args\n"); |
| goto fail_gen; |
| } |
| |
| if (sys_in->client >= IPA_CLIENT_MAX || sys_in->desc_fifo_sz == 0) { |
| IPAERR("bad parm client:%d fifo_sz:%d\n", |
| sys_in->client, sys_in->desc_fifo_sz); |
| goto fail_gen; |
| } |
| |
| ipa_ep_idx = ipa2_get_ep_mapping(sys_in->client); |
| if (ipa_ep_idx == -1) { |
| IPAERR("Invalid client.\n"); |
| goto fail_gen; |
| } |
| |
| ep = &ipa_ctx->ep[ipa_ep_idx]; |
| |
| IPA_ACTIVE_CLIENTS_INC_EP(sys_in->client); |
| |
| if (ep->valid == 1) { |
| if (sys_in->client != IPA_CLIENT_APPS_LAN_WAN_PROD) { |
| IPAERR("EP already allocated.\n"); |
| goto fail_and_disable_clocks; |
| } else { |
| if (ipa2_cfg_ep_hdr(ipa_ep_idx, |
| &sys_in->ipa_ep_cfg.hdr)) { |
| IPAERR("fail to configure hdr prop of EP.\n"); |
| result = -EFAULT; |
| goto fail_and_disable_clocks; |
| } |
| if (ipa2_cfg_ep_cfg(ipa_ep_idx, |
| &sys_in->ipa_ep_cfg.cfg)) { |
| IPAERR("fail to configure cfg prop of EP.\n"); |
| result = -EFAULT; |
| goto fail_and_disable_clocks; |
| } |
| IPADBG("client %d (ep: %d) overlay ok sys=%p\n", |
| sys_in->client, ipa_ep_idx, ep->sys); |
| ep->client_notify = sys_in->notify; |
| ep->priv = sys_in->priv; |
| *clnt_hdl = ipa_ep_idx; |
| if (!ep->keep_ipa_awake) |
| IPA_ACTIVE_CLIENTS_DEC_EP(sys_in->client); |
| |
| return 0; |
| } |
| } |
| |
| memset(ep, 0, offsetof(struct ipa_ep_context, sys)); |
| |
| if (!ep->sys) { |
| ep->sys = kzalloc(sizeof(struct ipa_sys_context), GFP_KERNEL); |
| if (!ep->sys) { |
| IPAERR("failed to sys ctx for client %d\n", |
| sys_in->client); |
| result = -ENOMEM; |
| goto fail_and_disable_clocks; |
| } |
| |
| ep->sys->ep = ep; |
| snprintf(buff, IPA_RESOURCE_NAME_MAX, "ipawq%d", |
| sys_in->client); |
| ep->sys->wq = alloc_workqueue(buff, |
| WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1); |
| if (!ep->sys->wq) { |
| IPAERR("failed to create wq for client %d\n", |
| sys_in->client); |
| result = -EFAULT; |
| goto fail_wq; |
| } |
| |
| snprintf(buff, IPA_RESOURCE_NAME_MAX, "iparepwq%d", |
| sys_in->client); |
| ep->sys->repl_wq = alloc_workqueue(buff, |
| WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1); |
| if (!ep->sys->repl_wq) { |
| IPAERR("failed to create rep wq for client %d\n", |
| sys_in->client); |
| result = -EFAULT; |
| goto fail_wq2; |
| } |
| |
| INIT_LIST_HEAD(&ep->sys->head_desc_list); |
| INIT_LIST_HEAD(&ep->sys->rcycl_list); |
| spin_lock_init(&ep->sys->spinlock); |
| } else { |
| memset(ep->sys, 0, offsetof(struct ipa_sys_context, ep)); |
| } |
| |
| ep->skip_ep_cfg = sys_in->skip_ep_cfg; |
| if (ipa_assign_policy(sys_in, ep->sys)) { |
| IPAERR("failed to sys ctx for client %d\n", sys_in->client); |
| result = -ENOMEM; |
| goto fail_gen2; |
| } |
| |
| ep->valid = 1; |
| ep->client = sys_in->client; |
| ep->client_notify = sys_in->notify; |
| ep->napi_enabled = sys_in->napi_enabled; |
| ep->priv = sys_in->priv; |
| ep->keep_ipa_awake = sys_in->keep_ipa_awake; |
| atomic_set(&ep->avail_fifo_desc, |
| ((sys_in->desc_fifo_sz/sizeof(struct sps_iovec))-1)); |
| |
| if (ep->status.status_en && IPA_CLIENT_IS_CONS(ep->client) && |
| ep->sys->status_stat == NULL) { |
| ep->sys->status_stat = |
| kzalloc(sizeof(struct ipa_status_stats), GFP_KERNEL); |
| if (!ep->sys->status_stat) { |
| IPAERR("no memory\n"); |
| goto fail_gen2; |
| } |
| } |
| |
| result = ipa_enable_data_path(ipa_ep_idx); |
| if (result) { |
| IPAERR("enable data path failed res=%d clnt=%d.\n", result, |
| ipa_ep_idx); |
| goto fail_gen2; |
| } |
| |
| if (!ep->skip_ep_cfg) { |
| if (ipa2_cfg_ep(ipa_ep_idx, &sys_in->ipa_ep_cfg)) { |
| IPAERR("fail to configure EP.\n"); |
| goto fail_gen2; |
| } |
| if (ipa2_cfg_ep_status(ipa_ep_idx, &ep->status)) { |
| IPAERR("fail to configure status of EP.\n"); |
| goto fail_gen2; |
| } |
| IPADBG("ep configuration successful\n"); |
| } else { |
| IPADBG("skipping ep configuration\n"); |
| } |
| |
| /* Default Config */ |
| ep->ep_hdl = sps_alloc_endpoint(); |
| if (ep->ep_hdl == NULL) { |
| IPAERR("SPS EP allocation failed.\n"); |
| goto fail_gen2; |
| } |
| |
| result = sps_get_config(ep->ep_hdl, &ep->connect); |
| if (result) { |
| IPAERR("fail to get config.\n"); |
| goto fail_sps_cfg; |
| } |
| |
| /* Specific Config */ |
| if (IPA_CLIENT_IS_CONS(sys_in->client)) { |
| ep->connect.mode = SPS_MODE_SRC; |
| ep->connect.destination = SPS_DEV_HANDLE_MEM; |
| ep->connect.source = ipa_ctx->bam_handle; |
| ep->connect.dest_pipe_index = ipa_ctx->a5_pipe_index++; |
| ep->connect.src_pipe_index = ipa_ep_idx; |
| /* |
| * Determine how many buffers/descriptors remaining will |
| * cause to drop below the yellow WM bar. |
| */ |
| if (ep->sys->rx_buff_sz) |
| ep->rx_replenish_threshold = |
| ipa_get_sys_yellow_wm(ep->sys) / ep->sys->rx_buff_sz; |
| else |
| ep->rx_replenish_threshold = 0; |
| /* Only when the WAN pipes are setup, actual threshold will |
| * be read from the register. So update LAN_CONS ep again with |
| * right value. |
| */ |
| if (sys_in->client == IPA_CLIENT_APPS_WAN_CONS) |
| ipa_update_repl_threshold(IPA_CLIENT_APPS_LAN_CONS); |
| } else { |
| ep->connect.mode = SPS_MODE_DEST; |
| ep->connect.source = SPS_DEV_HANDLE_MEM; |
| ep->connect.destination = ipa_ctx->bam_handle; |
| ep->connect.src_pipe_index = ipa_ctx->a5_pipe_index++; |
| ep->connect.dest_pipe_index = ipa_ep_idx; |
| } |
| |
| IPADBG("client:%d ep:%d", |
| sys_in->client, ipa_ep_idx); |
| |
| IPADBG("dest_pipe_index:%d src_pipe_index:%d\n", |
| ep->connect.dest_pipe_index, |
| ep->connect.src_pipe_index); |
| |
| ep->connect.options = ep->sys->sps_option; |
| ep->connect.desc.size = sys_in->desc_fifo_sz; |
| ep->connect.desc.base = dma_alloc_coherent(ipa_ctx->pdev, |
| ep->connect.desc.size, &dma_addr, GFP_KERNEL); |
| if (ipa_ctx->smmu_s1_bypass) { |
| ep->connect.desc.phys_base = dma_addr; |
| } else { |
| ep->connect.desc.iova = dma_addr; |
| smmu_domain = ipa2_get_smmu_domain(); |
| if (smmu_domain != NULL) { |
| ep->connect.desc.phys_base = |
| iommu_iova_to_phys(smmu_domain, dma_addr); |
| } |
| } |
| if (ep->connect.desc.base == NULL) { |
| IPAERR("fail to get DMA desc memory.\n"); |
| goto fail_sps_cfg; |
| } |
| |
| ep->connect.event_thresh = IPA_EVENT_THRESHOLD; |
| |
| result = ipa_sps_connect_safe(ep->ep_hdl, &ep->connect, sys_in->client); |
| if (result) { |
| IPAERR("sps_connect fails.\n"); |
| goto fail_sps_connect; |
| } |
| |
| ep->sys->event.options = SPS_O_EOT; |
| ep->sys->event.mode = SPS_TRIGGER_CALLBACK; |
| ep->sys->event.xfer_done = NULL; |
| ep->sys->event.user = ep->sys; |
| ep->sys->event.callback = ep->sys->sps_callback; |
| result = sps_register_event(ep->ep_hdl, &ep->sys->event); |
| if (result < 0) { |
| IPAERR("register event error %d\n", result); |
| goto fail_register_event; |
| } |
| |
| *clnt_hdl = ipa_ep_idx; |
| |
| if (ep->sys->repl_hdlr == ipa_fast_replenish_rx_cache) { |
| ep->sys->repl.capacity = ep->sys->rx_pool_sz + 1; |
| ep->sys->repl.cache = kzalloc(ep->sys->repl.capacity * |
| sizeof(void *), GFP_KERNEL); |
| if (!ep->sys->repl.cache) { |
| IPAERR("ep=%d fail to alloc repl cache\n", ipa_ep_idx); |
| ep->sys->repl_hdlr = ipa_replenish_rx_cache; |
| ep->sys->repl.capacity = 0; |
| } else { |
| atomic_set(&ep->sys->repl.head_idx, 0); |
| atomic_set(&ep->sys->repl.tail_idx, 0); |
| ipa_wq_repl_rx(&ep->sys->repl_work); |
| } |
| } |
| |
| if (IPA_CLIENT_IS_CONS(sys_in->client)) |
| ipa_replenish_rx_cache(ep->sys); |
| |
| if (IPA_CLIENT_IS_WLAN_CONS(sys_in->client)) { |
| ipa_alloc_wlan_rx_common_cache(IPA_WLAN_COMM_RX_POOL_LOW); |
| atomic_inc(&ipa_ctx->wc_memb.active_clnt_cnt); |
| } |
| |
| ipa_ctx->skip_ep_cfg_shadow[ipa_ep_idx] = ep->skip_ep_cfg; |
| if (!ep->skip_ep_cfg && IPA_CLIENT_IS_PROD(sys_in->client)) { |
| if (ipa_ctx->modem_cfg_emb_pipe_flt && |
| sys_in->client == IPA_CLIENT_APPS_LAN_WAN_PROD) |
| IPADBG("modem cfg emb pipe flt\n"); |
| else |
| ipa_install_dflt_flt_rules(ipa_ep_idx); |
| } |
| |
| if (!ep->keep_ipa_awake) |
| IPA_ACTIVE_CLIENTS_DEC_EP(sys_in->client); |
| |
| IPADBG("client %d (ep: %d) connected sys=%p\n", sys_in->client, |
| ipa_ep_idx, ep->sys); |
| |
| return 0; |
| |
| fail_register_event: |
| sps_disconnect(ep->ep_hdl); |
| fail_sps_connect: |
| dma_free_coherent(ipa_ctx->pdev, ep->connect.desc.size, |
| ep->connect.desc.base, |
| ep->connect.desc.phys_base); |
| fail_sps_cfg: |
| sps_free_endpoint(ep->ep_hdl); |
| fail_gen2: |
| destroy_workqueue(ep->sys->repl_wq); |
| fail_wq2: |
| destroy_workqueue(ep->sys->wq); |
| fail_wq: |
| kfree(ep->sys); |
| memset(&ipa_ctx->ep[ipa_ep_idx], 0, sizeof(struct ipa_ep_context)); |
| fail_and_disable_clocks: |
| IPA_ACTIVE_CLIENTS_DEC_EP(sys_in->client); |
| fail_gen: |
| return result; |
| } |
| |
| /** |
| * ipa2_teardown_sys_pipe() - Teardown the system-BAM pipe and cleanup IPA EP |
| * @clnt_hdl: [in] the handle obtained from ipa2_setup_sys_pipe |
| * |
| * Returns: 0 on success, negative on failure |
| */ |
| int ipa2_teardown_sys_pipe(u32 clnt_hdl) |
| { |
| struct ipa_ep_context *ep; |
| int empty; |
| |
| if (unlikely(!ipa_ctx)) { |
| IPAERR("IPA driver was not initialized\n"); |
| return -EINVAL; |
| } |
| |
| if (clnt_hdl >= ipa_ctx->ipa_num_pipes || |
| ipa_ctx->ep[clnt_hdl].valid == 0) { |
| IPAERR("bad parm.\n"); |
| return -EINVAL; |
| } |
| |
| ep = &ipa_ctx->ep[clnt_hdl]; |
| |
| if (!ep->keep_ipa_awake) |
| IPA_ACTIVE_CLIENTS_INC_EP(ipa2_get_client_mapping(clnt_hdl)); |
| |
| ipa_disable_data_path(clnt_hdl); |
| if (ep->napi_enabled) { |
| ep->switch_to_intr = true; |
| do { |
| usleep_range(95, 105); |
| } while (atomic_read(&ep->sys->curr_polling_state)); |
| } |
| |
| if (IPA_CLIENT_IS_PROD(ep->client)) { |
| do { |
| spin_lock_bh(&ep->sys->spinlock); |
| empty = list_empty(&ep->sys->head_desc_list); |
| spin_unlock_bh(&ep->sys->spinlock); |
| if (!empty) |
| usleep_range(95, 105); |
| else |
| break; |
| } while (1); |
| } |
| |
| if (IPA_CLIENT_IS_CONS(ep->client)) { |
| cancel_delayed_work_sync(&ep->sys->replenish_rx_work); |
| cancel_delayed_work_sync(&ep->sys->switch_to_intr_work); |
| } |
| |
| flush_workqueue(ep->sys->wq); |
| sps_disconnect(ep->ep_hdl); |
| dma_free_coherent(ipa_ctx->pdev, ep->connect.desc.size, |
| ep->connect.desc.base, |
| ep->connect.desc.phys_base); |
| sps_free_endpoint(ep->ep_hdl); |
| if (ep->sys->repl_wq) |
| flush_workqueue(ep->sys->repl_wq); |
| if (IPA_CLIENT_IS_CONS(ep->client)) |
| ipa_cleanup_rx(ep->sys); |
| |
| if (!ep->skip_ep_cfg && IPA_CLIENT_IS_PROD(ep->client)) { |
| if (ipa_ctx->modem_cfg_emb_pipe_flt && |
| ep->client == IPA_CLIENT_APPS_LAN_WAN_PROD) |
| IPADBG("modem cfg emb pipe flt\n"); |
| else |
| ipa_delete_dflt_flt_rules(clnt_hdl); |
| } |
| |
| if (IPA_CLIENT_IS_WLAN_CONS(ep->client)) |
| atomic_dec(&ipa_ctx->wc_memb.active_clnt_cnt); |
| |
| memset(&ep->wstats, 0, sizeof(struct ipa_wlan_stats)); |
| |
| if (!atomic_read(&ipa_ctx->wc_memb.active_clnt_cnt)) |
| ipa_cleanup_wlan_rx_common_cache(); |
| |
| ep->valid = 0; |
| IPA_ACTIVE_CLIENTS_DEC_EP(ipa2_get_client_mapping(clnt_hdl)); |
| |
| IPADBG("client (ep: %d) disconnected\n", clnt_hdl); |
| |
| return 0; |
| } |
| |
| /** |
| * ipa_tx_comp_usr_notify_release() - Callback function which will call the |
| * user supplied callback function to release the skb, or release it on |
| * its own if no callback function was supplied. |
| * @user1 |
| * @user2 |
| * |
| * This notified callback is for the destination client. |
| * This function is supplied in ipa_connect. |
| */ |
| static void ipa_tx_comp_usr_notify_release(void *user1, int user2) |
| { |
| struct sk_buff *skb = (struct sk_buff *)user1; |
| int ep_idx = user2; |
| |
| IPADBG("skb=%p ep=%d\n", skb, ep_idx); |
| |
| IPA_STATS_INC_CNT(ipa_ctx->stats.tx_pkts_compl); |
| |
| if (ipa_ctx->ep[ep_idx].client_notify) |
| ipa_ctx->ep[ep_idx].client_notify(ipa_ctx->ep[ep_idx].priv, |
| IPA_WRITE_DONE, (unsigned long)skb); |
| else |
| dev_kfree_skb_any(skb); |
| } |
| |
| static void ipa_tx_cmd_comp(void *user1, int user2) |
| { |
| kfree(user1); |
| } |
| |
| /** |
| * ipa2_tx_dp() - Data-path tx handler |
| * @dst: [in] which IPA destination to route tx packets to |
| * @skb: [in] the packet to send |
| * @metadata: [in] TX packet meta-data |
| * |
| * Data-path tx handler, this is used for both SW data-path which by-passes most |
| * IPA HW blocks AND the regular HW data-path for WLAN AMPDU traffic only. If |
| * dst is a "valid" CONS type, then SW data-path is used. If dst is the |
| * WLAN_AMPDU PROD type, then HW data-path for WLAN AMPDU is used. Anything else |
| * is an error. For errors, client needs to free the skb as needed. For success, |
| * IPA driver will later invoke client callback if one was supplied. That |
| * callback should free the skb. If no callback supplied, IPA driver will free |
| * the skb internally |
| * |
| * The function will use two descriptors for this send command |
| * (for A5_WLAN_AMPDU_PROD only one desciprtor will be sent), |
| * the first descriptor will be used to inform the IPA hardware that |
| * apps need to push data into the IPA (IP_PACKET_INIT immediate command). |
| * Once this send was done from SPS point-of-view the IPA driver will |
| * get notified by the supplied callback - ipa_sps_irq_tx_comp() |
| * |
| * ipa_sps_irq_tx_comp will call to the user supplied |
| * callback (from ipa_connect) |
| * |
| * Returns: 0 on success, negative on failure |
| */ |
| int ipa2_tx_dp(enum ipa_client_type dst, struct sk_buff *skb, |
| struct ipa_tx_meta *meta) |
| { |
| struct ipa_desc *desc; |
| struct ipa_desc _desc[2]; |
| int dst_ep_idx; |
| struct ipa_ip_packet_init *cmd; |
| struct ipa_sys_context *sys; |
| int src_ep_idx; |
| int num_frags, f; |
| |
| if (unlikely(!ipa_ctx)) { |
| IPAERR("IPA driver was not initialized\n"); |
| return -EINVAL; |
| } |
| |
| if (skb->len == 0) { |
| IPAERR("packet size is 0\n"); |
| return -EINVAL; |
| } |
| |
| num_frags = skb_shinfo(skb)->nr_frags; |
| if (num_frags) { |
| /* 1 desc is needed for the linear portion of skb; |
| * 1 desc may be needed for the PACKET_INIT; |
| * 1 desc for each frag |
| */ |
| desc = kzalloc(sizeof(*desc) * (num_frags + 2), GFP_ATOMIC); |
| if (!desc) { |
| IPAERR("failed to alloc desc array\n"); |
| goto fail_mem; |
| } |
| } else { |
| memset(_desc, 0, 2 * sizeof(struct ipa_desc)); |
| desc = &_desc[0]; |
| } |
| |
| /* |
| * USB_CONS: PKT_INIT ep_idx = dst pipe |
| * Q6_CONS: PKT_INIT ep_idx = sender pipe |
| * A5_LAN_WAN_PROD: HW path ep_idx = sender pipe |
| * |
| * LAN TX: all PKT_INIT |
| * WAN TX: PKT_INIT (cmd) + HW (data) |
| * |
| */ |
| if (IPA_CLIENT_IS_CONS(dst)) { |
| src_ep_idx = ipa2_get_ep_mapping(IPA_CLIENT_APPS_LAN_WAN_PROD); |
| if (-1 == src_ep_idx) { |
| IPAERR("Client %u is not mapped\n", |
| IPA_CLIENT_APPS_LAN_WAN_PROD); |
| goto fail_gen; |
| } |
| dst_ep_idx = ipa2_get_ep_mapping(dst); |
| } else { |
| src_ep_idx = ipa2_get_ep_mapping(dst); |
| if (-1 == src_ep_idx) { |
| IPAERR("Client %u is not mapped\n", dst); |
| goto fail_gen; |
| } |
| if (meta && meta->pkt_init_dst_ep_valid) |
| dst_ep_idx = meta->pkt_init_dst_ep; |
| else |
| dst_ep_idx = -1; |
| } |
| |
| sys = ipa_ctx->ep[src_ep_idx].sys; |
| |
| if (!sys->ep->valid) { |
| IPAERR("pipe not valid\n"); |
| goto fail_gen; |
| } |
| |
| if (dst_ep_idx != -1) { |
| /* SW data path */ |
| cmd = kzalloc(sizeof(struct ipa_ip_packet_init), GFP_ATOMIC); |
| if (!cmd) { |
| IPAERR("failed to alloc immediate command object\n"); |
| goto fail_gen; |
| } |
| |
| cmd->destination_pipe_index = dst_ep_idx; |
| desc[0].opcode = IPA_IP_PACKET_INIT; |
| desc[0].pyld = cmd; |
| desc[0].len = sizeof(struct ipa_ip_packet_init); |
| desc[0].type = IPA_IMM_CMD_DESC; |
| desc[0].callback = ipa_tx_cmd_comp; |
| desc[0].user1 = cmd; |
| desc[1].pyld = skb->data; |
| desc[1].len = skb_headlen(skb); |
| desc[1].type = IPA_DATA_DESC_SKB; |
| desc[1].callback = ipa_tx_comp_usr_notify_release; |
| desc[1].user1 = skb; |
| desc[1].user2 = (meta && meta->pkt_init_dst_ep_valid && |
| meta->pkt_init_dst_ep_remote) ? |
| src_ep_idx : |
| dst_ep_idx; |
| if (meta && meta->dma_address_valid) { |
| desc[1].dma_address_valid = true; |
| desc[1].dma_address = meta->dma_address; |
| } |
| |
| for (f = 0; f < num_frags; f++) { |
| desc[2+f].frag = &skb_shinfo(skb)->frags[f]; |
| desc[2+f].type = IPA_DATA_DESC_SKB_PAGED; |
| desc[2+f].len = skb_frag_size(desc[2+f].frag); |
| } |
| |
| /* don't free skb till frag mappings are released */ |
| if (num_frags) { |
| desc[2+f-1].callback = desc[1].callback; |
| desc[2+f-1].user1 = desc[1].user1; |
| desc[2+f-1].user2 = desc[1].user2; |
| desc[1].callback = NULL; |
| } |
| |
| if (ipa_send(sys, num_frags + 2, desc, true)) { |
| IPAERR("fail to send skb %p num_frags %u SWP\n", |
| skb, num_frags); |
| goto fail_send; |
| } |
| IPA_STATS_INC_CNT(ipa_ctx->stats.tx_sw_pkts); |
| } else { |
| /* HW data path */ |
| desc[0].pyld = skb->data; |
| desc[0].len = skb_headlen(skb); |
| desc[0].type = IPA_DATA_DESC_SKB; |
| desc[0].callback = ipa_tx_comp_usr_notify_release; |
| desc[0].user1 = skb; |
| desc[0].user2 = src_ep_idx; |
| |
| if (meta && meta->dma_address_valid) { |
| desc[0].dma_address_valid = true; |
| desc[0].dma_address = meta->dma_address; |
| } |
| |
| if (num_frags == 0) { |
| if (ipa_send_one(sys, desc, true)) { |
| IPAERR("fail to send skb %p HWP\n", skb); |
| goto fail_gen; |
| } |
| } else { |
| for (f = 0; f < num_frags; f++) { |
| desc[1+f].frag = &skb_shinfo(skb)->frags[f]; |
| desc[1+f].type = IPA_DATA_DESC_SKB_PAGED; |
| desc[1+f].len = skb_frag_size(desc[1+f].frag); |
| } |
| |
| /* don't free skb till frag mappings are released */ |
| desc[1+f-1].callback = desc[0].callback; |
| desc[1+f-1].user1 = desc[0].user1; |
| desc[1+f-1].user2 = desc[0].user2; |
| desc[0].callback = NULL; |
| |
| if (ipa_send(sys, num_frags + 1, desc, true)) { |
| IPAERR("fail to send skb %p num_frags %u HWP\n", |
| skb, num_frags); |
| goto fail_gen; |
| } |
| } |
| |
| IPA_STATS_INC_CNT(ipa_ctx->stats.tx_hw_pkts); |
| } |
| |
| if (num_frags) { |
| kfree(desc); |
| IPA_STATS_INC_CNT(ipa_ctx->stats.tx_non_linear); |
| } |
| |
| return 0; |
| |
| fail_send: |
| kfree(cmd); |
| fail_gen: |
| if (num_frags) |
| kfree(desc); |
| fail_mem: |
| return -EFAULT; |
| } |
| |
| static void ipa_wq_handle_rx(struct work_struct *work) |
| { |
| struct ipa_sys_context *sys; |
| |
| sys = container_of(work, struct ipa_sys_context, work); |
| |
| if (sys->ep->napi_enabled) { |
| IPA_ACTIVE_CLIENTS_INC_SPECIAL("NAPI"); |
| sys->ep->client_notify(sys->ep->priv, |
| IPA_CLIENT_START_POLL, 0); |
| } else |
| ipa_handle_rx(sys); |
| } |
| |
| static void ipa_wq_repl_rx(struct work_struct *work) |
| { |
| struct ipa_sys_context *sys; |
| void *ptr; |
| struct ipa_rx_pkt_wrapper *rx_pkt; |
| gfp_t flag = GFP_KERNEL | (ipa_ctx->use_dma_zone ? GFP_DMA : 0); |
| u32 next; |
| u32 curr; |
| |
| sys = container_of(work, struct ipa_sys_context, repl_work); |
| curr = atomic_read(&sys->repl.tail_idx); |
| |
| begin: |
| while (1) { |
| next = (curr + 1) % sys->repl.capacity; |
| if (next == atomic_read(&sys->repl.head_idx)) |
| goto fail_kmem_cache_alloc; |
| |
| rx_pkt = kmem_cache_zalloc(ipa_ctx->rx_pkt_wrapper_cache, |
| flag); |
| if (!rx_pkt) { |
| pr_err_ratelimited("%s fail alloc rx wrapper sys=%p\n", |
| __func__, sys); |
| goto fail_kmem_cache_alloc; |
| } |
| |
| INIT_LIST_HEAD(&rx_pkt->link); |
| INIT_WORK(&rx_pkt->work, ipa_wq_rx_avail); |
| rx_pkt->sys = sys; |
| |
| rx_pkt->data.skb = sys->get_skb(sys->rx_buff_sz, flag); |
| if (rx_pkt->data.skb == NULL) { |
| pr_err_ratelimited("%s fail alloc skb sys=%p\n", |
| __func__, sys); |
| goto fail_skb_alloc; |
| } |
| ptr = skb_put(rx_pkt->data.skb, sys->rx_buff_sz); |
| rx_pkt->data.dma_addr = dma_map_single(ipa_ctx->pdev, ptr, |
| sys->rx_buff_sz, |
| DMA_FROM_DEVICE); |
| if (dma_mapping_error(ipa_ctx->pdev, |
| rx_pkt->data.dma_addr)) { |
| pr_err_ratelimited("%s dma map fail %p for %p sys=%p\n", |
| __func__, (void *)rx_pkt->data.dma_addr, |
| ptr, sys); |
| goto fail_dma_mapping; |
| } |
| |
| sys->repl.cache[curr] = rx_pkt; |
| curr = next; |
| /* ensure write is done before setting tail index */ |
| mb(); |
| atomic_set(&sys->repl.tail_idx, next); |
| } |
| |
| return; |
| |
| fail_dma_mapping: |
| sys->free_skb(rx_pkt->data.skb); |
| fail_skb_alloc: |
| kmem_cache_free(ipa_ctx->rx_pkt_wrapper_cache, rx_pkt); |
| fail_kmem_cache_alloc: |
| if (atomic_read(&sys->repl.tail_idx) == |
| atomic_read(&sys->repl.head_idx)) { |
| if (sys->ep->client == IPA_CLIENT_APPS_WAN_CONS) |
| IPA_STATS_INC_CNT(ipa_ctx->stats.wan_repl_rx_empty); |
| else if (sys->ep->client == IPA_CLIENT_APPS_LAN_CONS) |
| IPA_STATS_INC_CNT(ipa_ctx->stats.lan_repl_rx_empty); |
| else |
| WARN_ON(1); |
| pr_err_ratelimited("%s sys=%p repl ring empty\n", |
| __func__, sys); |
| goto begin; |
| } |
| } |
| |
| static void ipa_replenish_wlan_rx_cache(struct ipa_sys_context *sys) |
| { |
| struct ipa_rx_pkt_wrapper *rx_pkt = NULL; |
| struct ipa_rx_pkt_wrapper *tmp; |
| int ret; |
| u32 rx_len_cached = 0; |
| |
| IPADBG("\n"); |
| |
| spin_lock_bh(&ipa_ctx->wc_memb.wlan_spinlock); |
| rx_len_cached = sys->len; |
| |
| if (rx_len_cached < sys->rx_pool_sz) { |
| list_for_each_entry_safe(rx_pkt, tmp, |
| &ipa_ctx->wc_memb.wlan_comm_desc_list, link) { |
| list_del(&rx_pkt->link); |
| |
| if (ipa_ctx->wc_memb.wlan_comm_free_cnt > 0) |
| ipa_ctx->wc_memb.wlan_comm_free_cnt--; |
| |
| INIT_LIST_HEAD(&rx_pkt->link); |
| rx_pkt->len = 0; |
| rx_pkt->sys = sys; |
| |
| ret = sps_transfer_one(sys->ep->ep_hdl, |
| rx_pkt->data.dma_addr, |
| IPA_WLAN_RX_BUFF_SZ, rx_pkt, 0); |
| |
| if (ret) { |
| IPAERR("sps_transfer_one failed %d\n", ret); |
| goto fail_sps_transfer; |
| } |
| |
| list_add_tail(&rx_pkt->link, &sys->head_desc_list); |
| rx_len_cached = ++sys->len; |
| |
| if (rx_len_cached >= sys->rx_pool_sz) { |
| spin_unlock_bh(&ipa_ctx->wc_memb.wlan_spinlock); |
| return; |
| } |
| } |
| } |
| spin_unlock_bh(&ipa_ctx->wc_memb.wlan_spinlock); |
| |
| if (rx_len_cached < sys->rx_pool_sz && |
| ipa_ctx->wc_memb.wlan_comm_total_cnt < |
| IPA_WLAN_COMM_RX_POOL_HIGH) { |
| ipa_replenish_rx_cache(sys); |
| ipa_ctx->wc_memb.wlan_comm_total_cnt += |
| (sys->rx_pool_sz - rx_len_cached); |
| } |
| |
| return; |
| |
| fail_sps_transfer: |
| list_del(&rx_pkt->link); |
| spin_unlock_bh(&ipa_ctx->wc_memb.wlan_spinlock); |
| } |
| |
| static void ipa_cleanup_wlan_rx_common_cache(void) |
| { |
| struct ipa_rx_pkt_wrapper *rx_pkt; |
| struct ipa_rx_pkt_wrapper *tmp; |
| |
| spin_lock_bh(&ipa_ctx->wc_memb.wlan_spinlock); |
| |
| list_for_each_entry_safe(rx_pkt, tmp, |
| &ipa_ctx->wc_memb.wlan_comm_desc_list, link) { |
| list_del(&rx_pkt->link); |
| dma_unmap_single(ipa_ctx->pdev, rx_pkt->data.dma_addr, |
| IPA_WLAN_COMM_RX_POOL_LOW, DMA_FROM_DEVICE); |
| dev_kfree_skb_any(rx_pkt->data.skb); |
| kmem_cache_free(ipa_ctx->rx_pkt_wrapper_cache, rx_pkt); |
| ipa_ctx->wc_memb.wlan_comm_free_cnt--; |
| ipa_ctx->wc_memb.wlan_comm_total_cnt--; |
| } |
| ipa_ctx->wc_memb.total_tx_pkts_freed = 0; |
| |
| if (ipa_ctx->wc_memb.wlan_comm_free_cnt != 0) |
| IPAERR("wlan comm buff free cnt: %d\n", |
| ipa_ctx->wc_memb.wlan_comm_free_cnt); |
| |
| if (ipa_ctx->wc_memb.wlan_comm_total_cnt != 0) |
| IPAERR("wlan comm buff total cnt: %d\n", |
| ipa_ctx->wc_memb.wlan_comm_total_cnt); |
| |
| spin_unlock_bh(&ipa_ctx->wc_memb.wlan_spinlock); |
| |
| } |
| |
| static void ipa_alloc_wlan_rx_common_cache(u32 size) |
| { |
| void *ptr; |
| struct ipa_rx_pkt_wrapper *rx_pkt; |
| int rx_len_cached = 0; |
| gfp_t flag = GFP_NOWAIT | __GFP_NOWARN | |
| (ipa_ctx->use_dma_zone ? GFP_DMA : 0); |
| |
| rx_len_cached = ipa_ctx->wc_memb.wlan_comm_total_cnt; |
| while (rx_len_cached < size) { |
| rx_pkt = kmem_cache_zalloc(ipa_ctx->rx_pkt_wrapper_cache, |
| flag); |
| if (!rx_pkt) { |
| IPAERR("failed to alloc rx wrapper\n"); |
| goto fail_kmem_cache_alloc; |
| } |
| |
| INIT_LIST_HEAD(&rx_pkt->link); |
| INIT_WORK(&rx_pkt->work, ipa_wq_rx_avail); |
| |
| rx_pkt->data.skb = |
| ipa_get_skb_ipa_rx(IPA_WLAN_RX_BUFF_SZ, |
| flag); |
| if (rx_pkt->data.skb == NULL) { |
| IPAERR("failed to alloc skb\n"); |
| goto fail_skb_alloc; |
| } |
| ptr = skb_put(rx_pkt->data.skb, IPA_WLAN_RX_BUFF_SZ); |
| rx_pkt->data.dma_addr = dma_map_single(ipa_ctx->pdev, ptr, |
| IPA_WLAN_RX_BUFF_SZ, DMA_FROM_DEVICE); |
| if (dma_mapping_error(ipa_ctx->pdev, |
| rx_pkt->data.dma_addr)) { |
| IPAERR("dma_map_single failure %p for %p\n", |
| (void *)rx_pkt->data.dma_addr, ptr); |
| goto fail_dma_mapping; |
| } |
| |
| list_add_tail(&rx_pkt->link, |
| &ipa_ctx->wc_memb.wlan_comm_desc_list); |
| rx_len_cached = ++ipa_ctx->wc_memb.wlan_comm_total_cnt; |
| |
| ipa_ctx->wc_memb.wlan_comm_free_cnt++; |
| |
| } |
| |
| return; |
| |
| fail_dma_mapping: |
| dev_kfree_skb_any(rx_pkt->data.skb); |
| fail_skb_alloc: |
| kmem_cache_free(ipa_ctx->rx_pkt_wrapper_cache, rx_pkt); |
| fail_kmem_cache_alloc: |
| return; |
| } |
| |
| |
| /** |
| * ipa_replenish_rx_cache() - Replenish the Rx packets cache. |
| * |
| * The function allocates buffers in the rx_pkt_wrapper_cache cache until there |
| * are IPA_RX_POOL_CEIL buffers in the cache. |
| * - Allocate a buffer in the cache |
| * - Initialized the packets link |
| * - Initialize the packets work struct |
| * - Allocate the packets socket buffer (skb) |
| * - Fill the packets skb with data |
| * - Make the packet DMAable |
| * - Add the packet to the system pipe linked list |
| * - Initiate a SPS transfer so that SPS driver will use this packet later. |
| */ |
| static void ipa_replenish_rx_cache(struct ipa_sys_context *sys) |
| { |
| void *ptr; |
| struct ipa_rx_pkt_wrapper *rx_pkt; |
| int ret; |
| int rx_len_cached = 0; |
| gfp_t flag = GFP_NOWAIT | __GFP_NOWARN | |
| (ipa_ctx->use_dma_zone ? GFP_DMA : 0); |
| |
| rx_len_cached = sys->len; |
| |
| while (rx_len_cached < sys->rx_pool_sz) { |
| rx_pkt = kmem_cache_zalloc(ipa_ctx->rx_pkt_wrapper_cache, |
| flag); |
| if (!rx_pkt) { |
| IPAERR("failed to alloc rx wrapper\n"); |
| goto fail_kmem_cache_alloc; |
| } |
| |
| INIT_LIST_HEAD(&rx_pkt->link); |
| INIT_WORK(&rx_pkt->work, ipa_wq_rx_avail); |
| rx_pkt->sys = sys; |
| |
| rx_pkt->data.skb = sys->get_skb(sys->rx_buff_sz, flag); |
| if (rx_pkt->data.skb == NULL) { |
| IPAERR("failed to alloc skb\n"); |
| goto fail_skb_alloc; |
| } |
| ptr = skb_put(rx_pkt->data.skb, sys->rx_buff_sz); |
| rx_pkt->data.dma_addr = dma_map_single(ipa_ctx->pdev, ptr, |
| sys->rx_buff_sz, |
| DMA_FROM_DEVICE); |
| if (dma_mapping_error(ipa_ctx->pdev, |
| rx_pkt->data.dma_addr)) { |
| IPAERR("dma_map_single failure %p for %p\n", |
| (void *)rx_pkt->data.dma_addr, ptr); |
| goto fail_dma_mapping; |
| } |
| |
| list_add_tail(&rx_pkt->link, &sys->head_desc_list); |
| rx_len_cached = ++sys->len; |
| |
| ret = sps_transfer_one(sys->ep->ep_hdl, |
| rx_pkt->data.dma_addr, sys->rx_buff_sz, rx_pkt, 0); |
| |
| if (ret) { |
| IPAERR("sps_transfer_one failed %d\n", ret); |
| goto fail_sps_transfer; |
| } |
| } |
| |
| return; |
| |
| fail_sps_transfer: |
| list_del(&rx_pkt->link); |
| rx_len_cached = --sys->len; |
| dma_unmap_single(ipa_ctx->pdev, rx_pkt->data.dma_addr, |
| sys->rx_buff_sz, DMA_FROM_DEVICE); |
| fail_dma_mapping: |
| sys->free_skb(rx_pkt->data.skb); |
| fail_skb_alloc: |
| kmem_cache_free(ipa_ctx->rx_pkt_wrapper_cache, rx_pkt); |
| fail_kmem_cache_alloc: |
| if (rx_len_cached == 0) |
| queue_delayed_work(sys->wq, &sys->replenish_rx_work, |
| msecs_to_jiffies(1)); |
| } |
| |
| static void ipa_replenish_rx_cache_recycle(struct ipa_sys_context *sys) |
| { |
| void *ptr; |
| struct ipa_rx_pkt_wrapper *rx_pkt; |
| int ret; |
| int rx_len_cached = 0; |
| |
| rx_len_cached = sys->len; |
| |
| while (rx_len_cached < sys->rx_pool_sz) { |
| spin_lock_bh(&sys->spinlock); |
| if (list_empty(&sys->rcycl_list)) |
| goto fail_kmem_cache_alloc; |
| |
| rx_pkt = list_first_entry(&sys->rcycl_list, |
| struct ipa_rx_pkt_wrapper, link); |
| list_del(&rx_pkt->link); |
| spin_unlock_bh(&sys->spinlock); |
| INIT_LIST_HEAD(&rx_pkt->link); |
| ptr = skb_put(rx_pkt->data.skb, sys->rx_buff_sz); |
| rx_pkt->data.dma_addr = dma_map_single(ipa_ctx->pdev, |
| ptr, sys->rx_buff_sz, DMA_FROM_DEVICE); |
| if (dma_mapping_error(ipa_ctx->pdev, rx_pkt->data.dma_addr)) { |
| IPAERR("dma_map_single failure for rx_pkt\n"); |
| goto fail_dma_mapping; |
| } |
| |
| list_add_tail(&rx_pkt->link, &sys->head_desc_list); |
| rx_len_cached = ++sys->len; |
| |
| ret = sps_transfer_one(sys->ep->ep_hdl, |
| rx_pkt->data.dma_addr, sys->rx_buff_sz, rx_pkt, 0); |
| |
| if (ret) { |
| IPAERR("sps_transfer_one failed %d\n", ret); |
| goto fail_sps_transfer; |
| } |
| } |
| |
| return; |
| fail_sps_transfer: |
| rx_len_cached = --sys->len; |
| list_del(&rx_pkt->link); |
| INIT_LIST_HEAD(&rx_pkt->link); |
| dma_unmap_single(ipa_ctx->pdev, rx_pkt->data.dma_addr, |
| sys->rx_buff_sz, DMA_FROM_DEVICE); |
| fail_dma_mapping: |
| spin_lock_bh(&sys->spinlock); |
| list_add_tail(&rx_pkt->link, &sys->rcycl_list); |
| INIT_LIST_HEAD(&rx_pkt->link); |
| spin_unlock_bh(&sys->spinlock); |
| fail_kmem_cache_alloc: |
| spin_unlock_bh(&sys->spinlock); |
| if (rx_len_cached == 0) |
| queue_delayed_work(sys->wq, &sys->replenish_rx_work, |
| msecs_to_jiffies(1)); |
| } |
| |
| static void ipa_fast_replenish_rx_cache(struct ipa_sys_context *sys) |
| { |
| struct ipa_rx_pkt_wrapper *rx_pkt; |
| int ret; |
| int rx_len_cached = 0; |
| u32 curr; |
| |
| rx_len_cached = sys->len; |
| curr = atomic_read(&sys->repl.head_idx); |
| |
| while (rx_len_cached < sys->rx_pool_sz) { |
| if (curr == atomic_read(&sys->repl.tail_idx)) { |
| queue_work(sys->repl_wq, &sys->repl_work); |
| break; |
| } |
| |
| rx_pkt = sys->repl.cache[curr]; |
| list_add_tail(&rx_pkt->link, &sys->head_desc_list); |
| |
| ret = sps_transfer_one(sys->ep->ep_hdl, |
| rx_pkt->data.dma_addr, sys->rx_buff_sz, rx_pkt, 0); |
| |
| if (ret) { |
| IPAERR("sps_transfer_one failed %d\n", ret); |
| list_del(&rx_pkt->link); |
| break; |
| } |
| rx_len_cached = ++sys->len; |
| sys->repl_trig_cnt++; |
| curr = (curr + 1) % sys->repl.capacity; |
| /* ensure write is done before setting head index */ |
| mb(); |
| atomic_set(&sys->repl.head_idx, curr); |
| } |
| |
| if (sys->repl_trig_cnt % sys->repl_trig_thresh == 0) |
| queue_work(sys->repl_wq, &sys->repl_work); |
| |
| if (rx_len_cached <= sys->ep->rx_replenish_threshold) { |
| if (rx_len_cached == 0) { |
| if (sys->ep->client == IPA_CLIENT_APPS_WAN_CONS) |
| IPA_STATS_INC_CNT(ipa_ctx->stats.wan_rx_empty); |
| else if (sys->ep->client == IPA_CLIENT_APPS_LAN_CONS) |
| IPA_STATS_INC_CNT(ipa_ctx->stats.lan_rx_empty); |
| else |
| WARN_ON(1); |
| } |
| sys->repl_trig_cnt = 0; |
| queue_delayed_work(sys->wq, &sys->replenish_rx_work, |
| msecs_to_jiffies(1)); |
| } |
| } |
| |
| static void replenish_rx_work_func(struct work_struct *work) |
| { |
| struct delayed_work *dwork; |
| struct ipa_sys_context *sys; |
| |
| dwork = container_of(work, struct delayed_work, work); |
| sys = container_of(dwork, struct ipa_sys_context, replenish_rx_work); |
| IPA_ACTIVE_CLIENTS_INC_SIMPLE(); |
| sys->repl_hdlr(sys); |
| IPA_ACTIVE_CLIENTS_DEC_SIMPLE(); |
| } |
| |
| /** |
| * ipa_cleanup_rx() - release RX queue resources |
| * |
| */ |
| static void ipa_cleanup_rx(struct ipa_sys_context *sys) |
| { |
| struct ipa_rx_pkt_wrapper *rx_pkt; |
| struct ipa_rx_pkt_wrapper *r; |
| u32 head; |
| u32 tail; |
| |
| list_for_each_entry_safe(rx_pkt, r, |
| &sys->head_desc_list, link) { |
| list_del(&rx_pkt->link); |
| dma_unmap_single(ipa_ctx->pdev, rx_pkt->data.dma_addr, |
| sys->rx_buff_sz, DMA_FROM_DEVICE); |
| sys->free_skb(rx_pkt->data.skb); |
| kmem_cache_free(ipa_ctx->rx_pkt_wrapper_cache, rx_pkt); |
| } |
| |
| list_for_each_entry_safe(rx_pkt, r, |
| &sys->rcycl_list, link) { |
| list_del(&rx_pkt->link); |
| dma_unmap_single(ipa_ctx->pdev, rx_pkt->data.dma_addr, |
| sys->rx_buff_sz, DMA_FROM_DEVICE); |
| sys->free_skb(rx_pkt->data.skb); |
| kmem_cache_free(ipa_ctx->rx_pkt_wrapper_cache, rx_pkt); |
| } |
| |
| if (sys->repl.cache) { |
| head = atomic_read(&sys->repl.head_idx); |
| tail = atomic_read(&sys->repl.tail_idx); |
| while (head != tail) { |
| rx_pkt = sys->repl.cache[head]; |
| dma_unmap_single(ipa_ctx->pdev, rx_pkt->data.dma_addr, |
| sys->rx_buff_sz, DMA_FROM_DEVICE); |
| sys->free_skb(rx_pkt->data.skb); |
| kmem_cache_free(ipa_ctx->rx_pkt_wrapper_cache, rx_pkt); |
| head = (head + 1) % sys->repl.capacity; |
| } |
| kfree(sys->repl.cache); |
| } |
| } |
| |
| static struct sk_buff *ipa_skb_copy_for_client(struct sk_buff *skb, int len) |
| { |
| struct sk_buff *skb2 = NULL; |
| |
| skb2 = __dev_alloc_skb(len + IPA_RX_BUFF_CLIENT_HEADROOM, GFP_KERNEL); |
| if (likely(skb2)) { |
| /* Set the data pointer */ |
| skb_reserve(skb2, IPA_RX_BUFF_CLIENT_HEADROOM); |
| memcpy(skb2->data, skb->data, len); |
| skb2->len = len; |
| skb_set_tail_pointer(skb2, len); |
| } |
| |
| return skb2; |
| } |
| |
| static int ipa_lan_rx_pyld_hdlr(struct sk_buff *skb, |
| struct ipa_sys_context *sys) |
| { |
| int rc = 0; |
| struct ipa_hw_pkt_status *status; |
| struct sk_buff *skb2; |
| int pad_len_byte; |
| int len; |
| unsigned char *buf; |
| int src_pipe; |
| unsigned int used = *(unsigned int *)skb->cb; |
| unsigned int used_align = ALIGN(used, 32); |
| unsigned long unused = IPA_GENERIC_RX_BUFF_BASE_SZ - used; |
| u32 skb2_len; |
| |
| IPA_DUMP_BUFF(skb->data, 0, skb->len); |
| |
| if (skb->len == 0) { |
| IPAERR("ZLT\n"); |
| sys->free_skb(skb); |
| return rc; |
| } |
| |
| if (sys->len_partial) { |
| IPADBG("len_partial %d\n", sys->len_partial); |
| buf = skb_push(skb, sys->len_partial); |
| memcpy(buf, sys->prev_skb->data, sys->len_partial); |
| sys->len_partial = 0; |
| sys->free_skb(sys->prev_skb); |
| sys->prev_skb = NULL; |
| goto begin; |
| } |
| |
| /* this pipe has TX comp (status only) + mux-ed LAN RX data |
| * (status+data) |
| */ |
| if (sys->len_rem) { |
| IPADBG("rem %d skb %d pad %d\n", sys->len_rem, skb->len, |
| sys->len_pad); |
| if (sys->len_rem <= skb->len) { |
| if (sys->prev_skb) { |
| skb2 = skb_copy_expand(sys->prev_skb, 0, |
| sys->len_rem, GFP_KERNEL); |
| if (likely(skb2)) { |
| memcpy(skb_put(skb2, sys->len_rem), |
| skb->data, sys->len_rem); |
| skb_trim(skb2, |
| skb2->len - sys->len_pad); |
| skb2->truesize = skb2->len + |
| sizeof(struct sk_buff); |
| if (sys->drop_packet) |
| dev_kfree_skb_any(skb2); |
| else |
| sys->ep->client_notify( |
| sys->ep->priv, |
| IPA_RECEIVE, |
| (unsigned long)(skb2)); |
| } else { |
| IPAERR("copy expand failed\n"); |
| } |
| dev_kfree_skb_any(sys->prev_skb); |
| } |
| skb_pull(skb, sys->len_rem); |
| sys->prev_skb = NULL; |
| sys->len_rem = 0; |
| sys->len_pad = 0; |
| } else { |
| if (sys->prev_skb) { |
| skb2 = skb_copy_expand(sys->prev_skb, 0, |
| skb->len, GFP_KERNEL); |
| if (likely(skb2)) { |
| memcpy(skb_put(skb2, skb->len), |
| skb->data, skb->len); |
| } else { |
| IPAERR("copy expand failed\n"); |
| } |
| dev_kfree_skb_any(sys->prev_skb); |
| sys->prev_skb = skb2; |
| } |
| sys->len_rem -= skb->len; |
| sys->free_skb(skb); |
| return rc; |
| } |
| } |
| |
| begin: |
| while (skb->len) { |
| sys->drop_packet = false; |
| IPADBG("LEN_REM %d\n", skb->len); |
| |
| if (skb->len < IPA_PKT_STATUS_SIZE) { |
| WARN_ON(sys->prev_skb != NULL); |
| IPADBG("status straddles buffer\n"); |
| sys->prev_skb = skb_copy(skb, GFP_KERNEL); |
| sys->len_partial = skb->len; |
| return rc; |
| } |
| |
| status = (struct ipa_hw_pkt_status *)skb->data; |
| IPADBG("STATUS opcode=%d src=%d dst=%d len=%d\n", |
| status->status_opcode, status->endp_src_idx, |
| status->endp_dest_idx, status->pkt_len); |
| if (sys->status_stat) { |
| sys->status_stat->status[sys->status_stat->curr] = |
| *status; |
| sys->status_stat->curr++; |
| if (sys->status_stat->curr == IPA_MAX_STATUS_STAT_NUM) |
| sys->status_stat->curr = 0; |
| } |
| |
| if (status->status_opcode != |
| IPA_HW_STATUS_OPCODE_DROPPED_PACKET && |
| status->status_opcode != |
| IPA_HW_STATUS_OPCODE_PACKET && |
| status->status_opcode != |
| IPA_HW_STATUS_OPCODE_SUSPENDED_PACKET && |
| status->status_opcode != |
| IPA_HW_STATUS_OPCODE_XLAT_PACKET) { |
| IPAERR("unsupported opcode(%d)\n", |
| status->status_opcode); |
| skb_pull(skb, IPA_PKT_STATUS_SIZE); |
| continue; |
| } |
| IPA_STATS_EXCP_CNT(status->exception, |
| ipa_ctx->stats.rx_excp_pkts); |
| if (status->endp_dest_idx >= ipa_ctx->ipa_num_pipes || |
| status->endp_src_idx >= ipa_ctx->ipa_num_pipes) { |
| IPAERR("status fields invalid\n"); |
| IPAERR("STATUS opcode=%d src=%d dst=%d len=%d\n", |
| status->status_opcode, status->endp_src_idx, |
| status->endp_dest_idx, status->pkt_len); |
| WARN_ON(1); |
| BUG(); |
| } |
| if (status->status_mask & IPA_HW_PKT_STATUS_MASK_TAG_VALID) { |
| struct ipa_tag_completion *comp; |
| |
| IPADBG("TAG packet arrived\n"); |
| if (status->tag_f_2 == IPA_COOKIE) { |
| skb_pull(skb, IPA_PKT_STATUS_SIZE); |
| if (skb->len < sizeof(comp)) { |
| IPAERR("TAG arrived without packet\n"); |
| return rc; |
| } |
| memcpy(&comp, skb->data, sizeof(comp)); |
| skb_pull(skb, sizeof(comp) + |
| IPA_SIZE_DL_CSUM_META_TRAILER); |
| complete(&comp->comp); |
| if (atomic_dec_return(&comp->cnt) == 0) |
| kfree(comp); |
| continue; |
| } else { |
| IPADBG("ignoring TAG with wrong cookie\n"); |
| } |
| } |
| if (status->pkt_len == 0) { |
| IPADBG("Skip aggr close status\n"); |
| skb_pull(skb, IPA_PKT_STATUS_SIZE); |
| IPA_STATS_INC_CNT(ipa_ctx->stats.aggr_close); |
| IPA_STATS_DEC_CNT( |
| ipa_ctx->stats.rx_excp_pkts[MAX_NUM_EXCP - 1]); |
| continue; |
| } |
| if (status->endp_dest_idx == (sys->ep - ipa_ctx->ep)) { |
| /* RX data */ |
| src_pipe = status->endp_src_idx; |
| |
| /* |
| * A packet which is received back to the AP after |
| * there was no route match. |
| */ |
| if (!status->exception && !status->route_match) |
| sys->drop_packet = true; |
| |
| if (skb->len == IPA_PKT_STATUS_SIZE && |
| !status->exception) { |
| WARN_ON(sys->prev_skb != NULL); |
| IPADBG("Ins header in next buffer\n"); |
| sys->prev_skb = skb_copy(skb, GFP_KERNEL); |
| sys->len_partial = skb->len; |
| return rc; |
| } |
| |
| pad_len_byte = ((status->pkt_len + 3) & ~3) - |
| status->pkt_len; |
| |
| len = status->pkt_len + pad_len_byte + |
| IPA_SIZE_DL_CSUM_META_TRAILER; |
| IPADBG("pad %d pkt_len %d len %d\n", pad_len_byte, |
| status->pkt_len, len); |
| |
| if (status->exception == |
| IPA_HW_PKT_STATUS_EXCEPTION_DEAGGR) { |
| IPADBG("Dropping packet on DeAggr Exception\n"); |
| sys->drop_packet = true; |
| } |
| |
| skb2_len = status->pkt_len + IPA_PKT_STATUS_SIZE; |
| skb2_len = min(skb2_len, skb->len); |
| skb2 = ipa_skb_copy_for_client(skb, skb2_len); |
| if (likely(skb2)) { |
| if (skb->len < len + IPA_PKT_STATUS_SIZE) { |
| IPADBG("SPL skb len %d len %d\n", |
| skb->len, len); |
| sys->prev_skb = skb2; |
| sys->len_rem = len - skb->len + |
| IPA_PKT_STATUS_SIZE; |
| sys->len_pad = pad_len_byte; |
| skb_pull(skb, skb->len); |
| } else { |
| skb_trim(skb2, status->pkt_len + |
| IPA_PKT_STATUS_SIZE); |
| IPADBG("rx avail for %d\n", |
| status->endp_dest_idx); |
| if (sys->drop_packet) { |
| dev_kfree_skb_any(skb2); |
| } else if (status->pkt_len > |
| IPA_GENERIC_AGGR_BYTE_LIMIT * |
| 1024) { |
| IPAERR("packet size invalid\n"); |
| IPAERR("STATUS opcode=%d\n", |
| status->status_opcode); |
| IPAERR("src=%d dst=%d len=%d\n", |
| status->endp_src_idx, |
| status->endp_dest_idx, |
| status->pkt_len); |
| BUG(); |
| } else { |
| skb2->truesize = skb2->len + |
| sizeof(struct sk_buff) + |
| (ALIGN(len + |
| IPA_PKT_STATUS_SIZE, 32) * |
| unused / used_align); |
| sys->ep->client_notify( |
| sys->ep->priv, |
| IPA_RECEIVE, |
| (unsigned long)(skb2)); |
| } |
| skb_pull(skb, len + |
| IPA_PKT_STATUS_SIZE); |
| } |
| } else { |
| IPAERR("fail to alloc skb\n"); |
| if (skb->len < len) { |
| sys->prev_skb = NULL; |
| sys->len_rem = len - skb->len + |
| IPA_PKT_STATUS_SIZE; |
| sys->len_pad = pad_len_byte; |
| skb_pull(skb, skb->len); |
| } else { |
| skb_pull(skb, len + |
| IPA_PKT_STATUS_SIZE); |
| } |
| } |
| /* TX comp */ |
| ipa_wq_write_done_status(src_pipe); |
| IPADBG("tx comp imp for %d\n", src_pipe); |
| } else { |
| /* TX comp */ |
| ipa_wq_write_done_status(status->endp_src_idx); |
| IPADBG("tx comp exp for %d\n", status->endp_src_idx); |
| skb_pull(skb, IPA_PKT_STATUS_SIZE); |
| IPA_STATS_INC_CNT(ipa_ctx->stats.stat_compl); |
| IPA_STATS_DEC_CNT( |
| ipa_ctx->stats.rx_excp_pkts[MAX_NUM_EXCP - 1]); |
| } |
| }; |
| |
| sys->free_skb(skb); |
| return rc; |
| } |
| |
| static struct sk_buff *join_prev_skb(struct sk_buff *prev_skb, |
| struct sk_buff *skb, unsigned int len) |
| { |
| struct sk_buff *skb2; |
| |
| skb2 = skb_copy_expand(prev_skb, 0, |
| len, GFP_KERNEL); |
| if (likely(skb2)) { |
| memcpy(skb_put(skb2, len), |
| skb->data, len); |
| } else { |
| IPAERR("copy expand failed\n"); |
| skb2 = NULL; |
| } |
| dev_kfree_skb_any(prev_skb); |
| |
| return skb2; |
| } |
| |
| static void wan_rx_handle_splt_pyld(struct sk_buff *skb, |
| struct ipa_sys_context *sys) |
| { |
| struct sk_buff *skb2; |
| |
| IPADBG("rem %d skb %d\n", sys->len_rem, skb->len); |
| if (sys->len_rem <= skb->len) { |
| if (sys->prev_skb) { |
| skb2 = join_prev_skb(sys->prev_skb, skb, |
| sys->len_rem); |
| if (likely(skb2)) { |
| IPADBG( |
| "removing Status element from skb and sending to WAN client"); |
| skb_pull(skb2, IPA_PKT_STATUS_SIZE); |
| skb2->truesize = skb2->len + |
| sizeof(struct sk_buff); |
| sys->ep->client_notify(sys->ep->priv, |
| IPA_RECEIVE, |
| (unsigned long)(skb2)); |
| } |
| } |
| skb_pull(skb, sys->len_rem); |
| sys->prev_skb = NULL; |
| sys->len_rem = 0; |
| } else { |
| if (sys->prev_skb) { |
| skb2 = join_prev_skb(sys->prev_skb, skb, |
| skb->len); |
| sys->prev_skb = skb2; |
| } |
| sys->len_rem -= skb->len; |
| skb_pull(skb, skb->len); |
| } |
| } |
| |
| static int ipa_wan_rx_pyld_hdlr(struct sk_buff *skb, |
| struct ipa_sys_context *sys) |
| { |
| int rc = 0; |
| struct ipa_hw_pkt_status *status; |
| struct sk_buff *skb2; |
| u16 pkt_len_with_pad; |
| u32 qmap_hdr; |
| int checksum_trailer_exists; |
| int frame_len; |
| int ep_idx; |
| unsigned int used = *(unsigned int *)skb->cb; |
| unsigned int used_align = ALIGN(used, 32); |
| unsigned long unused = IPA_GENERIC_RX_BUFF_BASE_SZ - used; |
| |
| IPA_DUMP_BUFF(skb->data, 0, skb->len); |
| if (skb->len == 0) { |
| IPAERR("ZLT\n"); |
| goto bail; |
| } |
| |
| if (ipa_ctx->ipa_client_apps_wan_cons_agg_gro) { |
| sys->ep->client_notify(sys->ep->priv, |
| IPA_RECEIVE, (unsigned long)(skb)); |
| return rc; |
| } |
| if (sys->repl_hdlr == ipa_replenish_rx_cache_recycle) { |
| IPAERR("Recycle should enable only with GRO Aggr\n"); |
| ipa_assert(); |
| } |
| /* |
| * payload splits across 2 buff or more, |
| * take the start of the payload from prev_skb |
| */ |
| if (sys->len_rem) |
| wan_rx_handle_splt_pyld(skb, sys); |
| |
| |
| while (skb->len) { |
| IPADBG("LEN_REM %d\n", skb->len); |
| if (skb->len < IPA_PKT_STATUS_SIZE) { |
| IPAERR("status straddles buffer\n"); |
| WARN_ON(1); |
| goto bail; |
| } |
| status = (struct ipa_hw_pkt_status *)skb->data; |
| IPADBG("STATUS opcode=%d src=%d dst=%d len=%d\n", |
| status->status_opcode, status->endp_src_idx, |
| status->endp_dest_idx, status->pkt_len); |
| |
| if (sys->status_stat) { |
| sys->status_stat->status[sys->status_stat->curr] = |
| *status; |
| sys->status_stat->curr++; |
| if (sys->status_stat->curr == IPA_MAX_STATUS_STAT_NUM) |
| sys->status_stat->curr = 0; |
| } |
| |
| if (status->status_opcode != |
| IPA_HW_STATUS_OPCODE_DROPPED_PACKET && |
| status->status_opcode != |
| IPA_HW_STATUS_OPCODE_PACKET && |
| status->status_opcode != |
| IPA_HW_STATUS_OPCODE_XLAT_PACKET) { |
| IPAERR("unsupported opcode\n"); |
| skb_pull(skb, IPA_PKT_STATUS_SIZE); |
| continue; |
| } |
| IPA_STATS_INC_CNT(ipa_ctx->stats.rx_pkts); |
| if (status->endp_dest_idx >= ipa_ctx->ipa_num_pipes || |
| status->endp_src_idx >= ipa_ctx->ipa_num_pipes || |
| status->pkt_len > IPA_GENERIC_AGGR_BYTE_LIMIT * 1024) { |
| IPAERR("status fields invalid\n"); |
| WARN_ON(1); |
| goto bail; |
| } |
| if (status->pkt_len == 0) { |
| IPADBG("Skip aggr close status\n"); |
| skb_pull(skb, IPA_PKT_STATUS_SIZE); |
| IPA_STATS_DEC_CNT(ipa_ctx->stats.rx_pkts); |
| IPA_STATS_INC_CNT(ipa_ctx->stats.wan_aggr_close); |
| continue; |
| } |
| ep_idx = ipa2_get_ep_mapping(IPA_CLIENT_APPS_WAN_CONS); |
| if (status->endp_dest_idx != ep_idx) { |
| IPAERR("expected endp_dest_idx %d received %d\n", |
| ep_idx, status->endp_dest_idx); |
| WARN_ON(1); |
| goto bail; |
| } |
| /* RX data */ |
| if (skb->len == IPA_PKT_STATUS_SIZE) { |
| IPAERR("Ins header in next buffer\n"); |
| WARN_ON(1); |
| goto bail; |
| } |
| qmap_hdr = *(u32 *)(status+1); |
| /* |
| * Take the pkt_len_with_pad from the last 2 bytes of the QMAP |
| * header |
| */ |
| |
| /*QMAP is BE: convert the pkt_len field from BE to LE*/ |
| pkt_len_with_pad = ntohs((qmap_hdr>>16) & 0xffff); |
| IPADBG("pkt_len with pad %d\n", pkt_len_with_pad); |
| /*get the CHECKSUM_PROCESS bit*/ |
| checksum_trailer_exists = status->status_mask & |
| IPA_HW_PKT_STATUS_MASK_CKSUM_PROCESS; |
| IPADBG("checksum_trailer_exists %d\n", |
| checksum_trailer_exists); |
| |
| frame_len = IPA_PKT_STATUS_SIZE + |
| IPA_QMAP_HEADER_LENGTH + |
| pkt_len_with_pad; |
| if (checksum_trailer_exists) |
| frame_len += IPA_DL_CHECKSUM_LENGTH; |
| IPADBG("frame_len %d\n", frame_len); |
| |
| skb2 = skb_clone(skb, GFP_KERNEL); |
| if (likely(skb2)) { |
| /* |
| * the len of actual data is smaller than expected |
| * payload split across 2 buff |
| */ |
| if (skb->len < frame_len) { |
| IPADBG("SPL skb len %d len %d\n", |
| skb->len, frame_len); |
| sys->prev_skb = skb2; |
| sys->len_rem = frame_len - skb->len; |
| skb_pull(skb, skb->len); |
| } else { |
| skb_trim(skb2, frame_len); |
| IPADBG("rx avail for %d\n", |
| status->endp_dest_idx); |
| IPADBG( |
| "removing Status element from skb and sending to WAN client"); |
| skb_pull(skb2, IPA_PKT_STATUS_SIZE); |
| skb2->truesize = skb2->len + |
| sizeof(struct sk_buff) + |
| (ALIGN(frame_len, 32) * |
| unused / used_align); |
| sys->ep->client_notify(sys->ep->priv, |
| IPA_RECEIVE, (unsigned long)(skb2)); |
| skb_pull(skb, frame_len); |
| } |
| } else { |
| IPAERR("fail to clone\n"); |
| if (skb->len < frame_len) { |
| sys->prev_skb = NULL; |
| sys->len_rem = frame_len - skb->len; |
| skb_pull(skb, skb->len); |
| } else { |
| skb_pull(skb, frame_len); |
| } |
| } |
| }; |
| bail: |
| sys->free_skb(skb); |
| return rc; |
| } |
| |
| static int ipa_rx_pyld_hdlr(struct sk_buff *rx_skb, struct ipa_sys_context *sys) |
| { |
| struct ipa_a5_mux_hdr *mux_hdr; |
| unsigned int pull_len; |
| unsigned int padding; |
| struct ipa_ep_context *ep; |
| unsigned int src_pipe; |
| |
| mux_hdr = (struct ipa_a5_mux_hdr *)rx_skb->data; |
| |
| src_pipe = mux_hdr->src_pipe_index; |
| |
| IPADBG("RX pkt len=%d IID=0x%x src=%d, flags=0x%x, meta=0x%x\n", |
| rx_skb->len, ntohs(mux_hdr->interface_id), |
| src_pipe, mux_hdr->flags, ntohl(mux_hdr->metadata)); |
| |
| IPA_DUMP_BUFF(rx_skb->data, 0, rx_skb->len); |
| |
| IPA_STATS_INC_CNT(ipa_ctx->stats.rx_pkts); |
| IPA_STATS_EXCP_CNT(mux_hdr->flags, ipa_ctx->stats.rx_excp_pkts); |
| |
| /* |
| * Any packets arriving over AMPDU_TX should be dispatched |
| * to the regular WLAN RX data-path. |
| */ |
| if (unlikely(src_pipe == WLAN_AMPDU_TX_EP)) |
| src_pipe = WLAN_PROD_TX_EP; |
| |
| ep = &ipa_ctx->ep[src_pipe]; |
| spin_lock(&ipa_ctx->disconnect_lock); |
| if (unlikely(src_pipe >= ipa_ctx->ipa_num_pipes || |
| !ep->valid || !ep->client_notify)) { |
| IPAERR("drop pipe=%d ep_valid=%d client_notify=%p\n", |
| src_pipe, ep->valid, ep->client_notify); |
| dev_kfree_skb_any(rx_skb); |
| spin_unlock(&ipa_ctx->disconnect_lock); |
| return 0; |
| } |
| |
| pull_len = sizeof(struct ipa_a5_mux_hdr); |
| |
| /* |
| * IP packet starts on word boundary |
| * remove the MUX header and any padding and pass the frame to |
| * the client which registered a rx callback on the "src pipe" |
| */ |
| padding = ep->cfg.hdr.hdr_len & 0x3; |
| if (padding) |
| pull_len += 4 - padding; |
| |
| IPADBG("pulling %d bytes from skb\n", pull_len); |
| skb_pull(rx_skb, pull_len); |
| ep->client_notify(ep->priv, IPA_RECEIVE, |
| (unsigned long)(rx_skb)); |
| spin_unlock(&ipa_ctx->disconnect_lock); |
| return 0; |
| } |
| |
| static struct sk_buff *ipa_get_skb_ipa_rx(unsigned int len, gfp_t flags) |
| { |
| return __dev_alloc_skb(len, flags); |
| } |
| |
| static struct sk_buff *ipa_get_skb_ipa_rx_headroom(unsigned int len, |
| gfp_t flags) |
| { |
| struct sk_buff *skb; |
| |
| skb = __dev_alloc_skb(len + IPA_HEADROOM, flags); |
| if (skb) |
| skb_reserve(skb, IPA_HEADROOM); |
| |
| return skb; |
| } |
| |
| static void ipa_free_skb_rx(struct sk_buff *skb) |
| { |
| dev_kfree_skb_any(skb); |
| } |
| |
| void ipa_lan_rx_cb(void *priv, enum ipa_dp_evt_type evt, unsigned long data) |
| { |
| struct sk_buff *rx_skb = (struct sk_buff *)data; |
| struct ipa_hw_pkt_status *status; |
| struct ipa_ep_context *ep; |
| unsigned int src_pipe; |
| u32 metadata; |
| |
| status = (struct ipa_hw_pkt_status *)rx_skb->data; |
| src_pipe = status->endp_src_idx; |
| metadata = status->metadata; |
| ep = &ipa_ctx->ep[src_pipe]; |
| if (unlikely(src_pipe >= ipa_ctx->ipa_num_pipes || |
| !ep->valid || |
| !ep->client_notify)) { |
| IPAERR("drop pipe=%d ep_valid=%d client_notify=%p\n", |
| src_pipe, ep->valid, ep->client_notify); |
| dev_kfree_skb_any(rx_skb); |
| return; |
| } |
| if (!status->exception) |
| skb_pull(rx_skb, IPA_PKT_STATUS_SIZE + |
| IPA_LAN_RX_HEADER_LENGTH); |
| else |
| skb_pull(rx_skb, IPA_PKT_STATUS_SIZE); |
| |
| /* |
| * Metadata Info |
| * ------------------------------------------ |
| * | 3 | 2 | 1 | 0 | |
| * | fw_desc | vdev_id | qmap mux id | Resv | |
| * ------------------------------------------ |
| */ |
| *(u16 *)rx_skb->cb = ((metadata >> 16) & 0xFFFF); |
| IPADBG("meta_data: 0x%x cb: 0x%x\n", |
| metadata, *(u32 *)rx_skb->cb); |
| |
| ep->client_notify(ep->priv, IPA_RECEIVE, (unsigned long)(rx_skb)); |
| } |
| |
| void ipa2_recycle_wan_skb(struct sk_buff *skb) |
| { |
| struct ipa_rx_pkt_wrapper *rx_pkt; |
| int ep_idx = ipa2_get_ep_mapping( |
| IPA_CLIENT_APPS_WAN_CONS); |
| gfp_t flag = GFP_NOWAIT | __GFP_NOWARN | |
| (ipa_ctx->use_dma_zone ? GFP_DMA : 0); |
| |
| if (unlikely(ep_idx == -1)) { |
| IPAERR("dest EP does not exist\n"); |
| ipa_assert(); |
| } |
| |
| rx_pkt = kmem_cache_zalloc( |
| ipa_ctx->rx_pkt_wrapper_cache, flag); |
| if (!rx_pkt) |
| ipa_assert(); |
| |
| INIT_WORK(&rx_pkt->work, ipa_wq_rx_avail); |
| rx_pkt->sys = ipa_ctx->ep[ep_idx].sys; |
| |
| rx_pkt->data.skb = skb; |
| rx_pkt->data.dma_addr = 0; |
| ipa_skb_recycle(rx_pkt->data.skb); |
| skb_reserve(rx_pkt->data.skb, IPA_HEADROOM); |
| INIT_LIST_HEAD(&rx_pkt->link); |
| spin_lock_bh(&rx_pkt->sys->spinlock); |
| list_add_tail(&rx_pkt->link, &rx_pkt->sys->rcycl_list); |
| spin_unlock_bh(&rx_pkt->sys->spinlock); |
| } |
| |
| static void ipa_wq_rx_common(struct ipa_sys_context *sys, u32 size) |
| { |
| struct ipa_rx_pkt_wrapper *rx_pkt_expected; |
| struct sk_buff *rx_skb; |
| |
| if (unlikely(list_empty(&sys->head_desc_list))) { |
| WARN_ON(1); |
| return; |
| } |
| rx_pkt_expected = list_first_entry(&sys->head_desc_list, |
| struct ipa_rx_pkt_wrapper, |
| link); |
| list_del(&rx_pkt_expected->link); |
| sys->len--; |
| if (size) |
| rx_pkt_expected->len = size; |
| rx_skb = rx_pkt_expected->data.skb; |
| dma_unmap_single(ipa_ctx->pdev, rx_pkt_expected->data.dma_addr, |
| sys->rx_buff_sz, DMA_FROM_DEVICE); |
| skb_set_tail_pointer(rx_skb, rx_pkt_expected->len); |
| rx_skb->len = rx_pkt_expected->len; |
| *(unsigned int *)rx_skb->cb = rx_skb->len; |
| rx_skb->truesize = rx_pkt_expected->len + sizeof(struct sk_buff); |
| sys->pyld_hdlr(rx_skb, sys); |
| sys->repl_hdlr(sys); |
| kmem_cache_free(ipa_ctx->rx_pkt_wrapper_cache, rx_pkt_expected); |
| |
| } |
| |
| static void ipa_wlan_wq_rx_common(struct ipa_sys_context *sys, u32 size) |
| { |
| struct ipa_rx_pkt_wrapper *rx_pkt_expected; |
| struct sk_buff *rx_skb; |
| |
| if (unlikely(list_empty(&sys->head_desc_list))) { |
| WARN_ON(1); |
| return; |
| } |
| rx_pkt_expected = list_first_entry(&sys->head_desc_list, |
| struct ipa_rx_pkt_wrapper, |
| link); |
| list_del(&rx_pkt_expected->link); |
| sys->len--; |
| |
| if (size) |
| rx_pkt_expected->len = size; |
| |
| rx_skb = rx_pkt_expected->data.skb; |
| skb_set_tail_pointer(rx_skb, rx_pkt_expected->len); |
| rx_skb->len = rx_pkt_expected->len; |
| rx_skb->truesize = rx_pkt_expected->len + sizeof(struct sk_buff); |
| sys->ep->wstats.tx_pkts_rcvd++; |
| if (sys->len <= IPA_WLAN_RX_POOL_SZ_LOW_WM) { |
| ipa2_free_skb(&rx_pkt_expected->data); |
| sys->ep->wstats.tx_pkts_dropped++; |
| } else { |
| sys->ep->wstats.tx_pkts_sent++; |
| sys->ep->client_notify(sys->ep->priv, IPA_RECEIVE, |
| (unsigned long)(&rx_pkt_expected->data)); |
| } |
| ipa_replenish_wlan_rx_cache(sys); |
| } |
| |
| static void ipa_dma_memcpy_notify(struct ipa_sys_context *sys, |
| struct sps_iovec *iovec) |
| { |
| IPADBG("ENTER.\n"); |
| if (unlikely(list_empty(&sys->head_desc_list))) { |
| IPAERR("descriptor list is empty!\n"); |
| WARN_ON(1); |
| return; |
| } |
| if (!(iovec->flags & SPS_IOVEC_FLAG_EOT)) { |
| IPAERR("received unexpected event. sps flag is 0x%x\n" |
| , iovec->flags); |
| WARN_ON(1); |
| return; |
| } |
| sys->ep->client_notify(sys->ep->priv, IPA_RECEIVE, |
| (unsigned long)(iovec)); |
| IPADBG("EXIT\n"); |
| } |
| |
| static void ipa_wq_rx_avail(struct work_struct *work) |
| { |
| struct ipa_rx_pkt_wrapper *rx_pkt; |
| struct ipa_sys_context *sys; |
| |
| rx_pkt = container_of(work, struct ipa_rx_pkt_wrapper, work); |
| if (unlikely(rx_pkt == NULL)) |
| WARN_ON(1); |
| sys = rx_pkt->sys; |
| ipa_wq_rx_common(sys, 0); |
| } |
| |
| /** |
| * ipa_sps_irq_rx_no_aggr_notify() - Callback function which will be called by |
| * the SPS driver after a Rx operation is complete. |
| * Called in an interrupt context. |
| * @notify: SPS driver supplied notification struct |
| * |
| * This function defer the work for this event to a workqueue. |
| */ |
| void ipa_sps_irq_rx_no_aggr_notify(struct sps_event_notify *notify) |
| { |
| struct ipa_rx_pkt_wrapper *rx_pkt; |
| |
| switch (notify->event_id) { |
| case SPS_EVENT_EOT: |
| rx_pkt = notify->data.transfer.user; |
| if (IPA_CLIENT_IS_APPS_CONS(rx_pkt->sys->ep->client)) |
| atomic_set(&ipa_ctx->sps_pm.eot_activity, 1); |
| rx_pkt->len = notify->data.transfer.iovec.size; |
| IPADBG("event %d notified sys=%p len=%u\n", notify->event_id, |
| notify->user, rx_pkt->len); |
| queue_work(rx_pkt->sys->wq, &rx_pkt->work); |
| break; |
| default: |
| IPAERR("received unexpected event id %d sys=%p\n", |
| notify->event_id, notify->user); |
| } |
| } |
| |
| static int ipa_odu_rx_pyld_hdlr(struct sk_buff *rx_skb, |
| struct ipa_sys_context *sys) |
| { |
| if (sys->ep->client_notify) { |
| sys->ep->client_notify(sys->ep->priv, IPA_RECEIVE, |
| (unsigned long)(rx_skb)); |
| } else { |
| dev_kfree_skb_any(rx_skb); |
| WARN_ON(1); |
| } |
| |
| return 0; |
| } |
| |
| static int ipa_assign_policy_v2(struct ipa_sys_connect_params *in, |
| struct ipa_sys_context *sys) |
| { |
| unsigned long int aggr_byte_limit; |
| |
| sys->ep->status.status_en = true; |
| sys->ep->wakelock_client = IPA_WAKELOCK_REF_CLIENT_MAX; |
| if (IPA_CLIENT_IS_PROD(in->client)) { |
| if (!sys->ep->skip_ep_cfg) { |
| sys->policy = IPA_POLICY_NOINTR_MODE; |
| sys->sps_option = SPS_O_AUTO_ENABLE; |
| sys->sps_callback = NULL; |
| sys->ep->status.status_ep = ipa2_get_ep_mapping( |
| IPA_CLIENT_APPS_LAN_CONS); |
| if (IPA_CLIENT_IS_MEMCPY_DMA_PROD(in->client)) |
| sys->ep->status.status_en = false; |
| } else { |
| sys->policy = IPA_POLICY_INTR_MODE; |
| sys->sps_option = (SPS_O_AUTO_ENABLE | |
| SPS_O_EOT); |
| sys->sps_callback = |
| ipa_sps_irq_tx_no_aggr_notify; |
| } |
| return 0; |
| } |
| |
| aggr_byte_limit = |
| (unsigned long int)IPA_GENERIC_RX_BUFF_SZ( |
| ipa_adjust_ra_buff_base_sz( |
| in->ipa_ep_cfg.aggr.aggr_byte_limit)); |
| |
| if (in->client == IPA_CLIENT_APPS_LAN_CONS || |
| in->client == IPA_CLIENT_APPS_WAN_CONS) { |
| sys->policy = IPA_POLICY_INTR_POLL_MODE; |
| sys->sps_option = (SPS_O_AUTO_ENABLE | SPS_O_EOT |
| | SPS_O_ACK_TRANSFERS); |
| sys->sps_callback = ipa_sps_irq_rx_notify; |
| INIT_WORK(&sys->work, ipa_wq_handle_rx); |
| INIT_DELAYED_WORK(&sys->switch_to_intr_work, |
| switch_to_intr_rx_work_func); |
| INIT_DELAYED_WORK(&sys->replenish_rx_work, |
| replenish_rx_work_func); |
| INIT_WORK(&sys->repl_work, ipa_wq_repl_rx); |
| atomic_set(&sys->curr_polling_state, 0); |
| sys->rx_buff_sz = IPA_GENERIC_RX_BUFF_SZ( |
| IPA_GENERIC_RX_BUFF_BASE_SZ) - |
| IPA_HEADROOM; |
| sys->get_skb = ipa_get_skb_ipa_rx_headroom; |
| sys->free_skb = ipa_free_skb_rx; |
| in->ipa_ep_cfg.aggr.aggr_en = IPA_ENABLE_AGGR; |
| in->ipa_ep_cfg.aggr.aggr = IPA_GENERIC; |
| in->ipa_ep_cfg.aggr.aggr_time_limit = |
| IPA_GENERIC_AGGR_TIME_LIMIT; |
| if (in->client == IPA_CLIENT_APPS_LAN_CONS) { |
| sys->pyld_hdlr = ipa_lan_rx_pyld_hdlr; |
| sys->rx_pool_sz = |
| ipa_ctx->lan_rx_ring_size; |
| if (nr_cpu_ids > 1) { |
| sys->repl_hdlr = |
| ipa_fast_replenish_rx_cache; |
| sys->repl_trig_thresh = |
| sys->rx_pool_sz / 8; |
| } else { |
| sys->repl_hdlr = |
| ipa_replenish_rx_cache; |
| } |
| in->ipa_ep_cfg.aggr.aggr_byte_limit = |
| IPA_GENERIC_AGGR_BYTE_LIMIT; |
| in->ipa_ep_cfg.aggr.aggr_pkt_limit = |
| IPA_GENERIC_AGGR_PKT_LIMIT; |
| sys->ep->wakelock_client = |
| IPA_WAKELOCK_REF_CLIENT_LAN_RX; |
| } else if (in->client == |
| IPA_CLIENT_APPS_WAN_CONS) { |
| sys->pyld_hdlr = ipa_wan_rx_pyld_hdlr; |
| sys->rx_pool_sz = ipa_ctx->wan_rx_ring_size; |
| if (nr_cpu_ids > 1) { |
| sys->repl_hdlr = |
| ipa_fast_replenish_rx_cache; |
| sys->repl_trig_thresh = |
| sys->rx_pool_sz / 8; |
| } else { |
| sys->repl_hdlr = |
| ipa_replenish_rx_cache; |
| } |
| if (in->napi_enabled && in->recycle_enabled) |
| sys->repl_hdlr = |
| ipa_replenish_rx_cache_recycle; |
| sys->ep->wakelock_client = |
| IPA_WAKELOCK_REF_CLIENT_WAN_RX; |
| in->ipa_ep_cfg.aggr.aggr_sw_eof_active |
| = true; |
| if (ipa_ctx->ipa_client_apps_wan_cons_agg_gro) { |
| IPAERR("get close-by %u\n", |
| ipa_adjust_ra_buff_base_sz( |
| in->ipa_ep_cfg.aggr. |
| aggr_byte_limit)); |
| IPAERR("set rx_buff_sz %lu\n", aggr_byte_limit); |
| /* disable ipa_status */ |
| sys->ep->status. |
| status_en = false; |
| sys->rx_buff_sz = |
| IPA_GENERIC_RX_BUFF_SZ( |
| ipa_adjust_ra_buff_base_sz( |
| in->ipa_ep_cfg.aggr. |
| aggr_byte_limit - IPA_HEADROOM)); |
| in->ipa_ep_cfg.aggr. |
| aggr_byte_limit = |
| sys->rx_buff_sz < in-> |
| ipa_ep_cfg.aggr.aggr_byte_limit ? |
| IPA_ADJUST_AGGR_BYTE_LIMIT( |
| sys->rx_buff_sz) : |
| IPA_ADJUST_AGGR_BYTE_LIMIT( |
| in->ipa_ep_cfg. |
| aggr.aggr_byte_limit); |
| IPAERR("set aggr_limit %lu\n", |
| (unsigned long int) |
| in->ipa_ep_cfg.aggr. |
| aggr_byte_limit); |
| } else { |
| in->ipa_ep_cfg.aggr. |
| aggr_byte_limit = |
| IPA_GENERIC_AGGR_BYTE_LIMIT; |
| in->ipa_ep_cfg.aggr. |
| aggr_pkt_limit = |
| IPA_GENERIC_AGGR_PKT_LIMIT; |
| } |
| } |
| } else if (IPA_CLIENT_IS_WLAN_CONS(in->client)) { |
| IPADBG("assigning policy to client:%d", |
| in->client); |
| |
| sys->ep->status.status_en = false; |
| sys->policy = IPA_POLICY_INTR_POLL_MODE; |
| sys->sps_option = (SPS_O_AUTO_ENABLE | SPS_O_EOT |
| | SPS_O_ACK_TRANSFERS); |
| sys->sps_callback = ipa_sps_irq_rx_notify; |
| INIT_WORK(&sys->work, ipa_wq_handle_rx); |
| INIT_DELAYED_WORK(&sys->switch_to_intr_work, |
| switch_to_intr_rx_work_func); |
| INIT_DELAYED_WORK(&sys->replenish_rx_work, |
| replenish_rx_work_func); |
| atomic_set(&sys->curr_polling_state, 0); |
| sys->rx_buff_sz = IPA_WLAN_RX_BUFF_SZ; |
| sys->rx_pool_sz = in->desc_fifo_sz / |
| sizeof(struct sps_iovec) - 1; |
| if (sys->rx_pool_sz > IPA_WLAN_RX_POOL_SZ) |
| sys->rx_pool_sz = IPA_WLAN_RX_POOL_SZ; |
| sys->pyld_hdlr = NULL; |
| sys->repl_hdlr = ipa_replenish_wlan_rx_cache; |
| sys->get_skb = ipa_get_skb_ipa_rx; |
| sys->free_skb = ipa_free_skb_rx; |
| in->ipa_ep_cfg.aggr.aggr_en = IPA_BYPASS_AGGR; |
| sys->ep->wakelock_client = |
| IPA_WAKELOCK_REF_CLIENT_WLAN_RX; |
| } else if (IPA_CLIENT_IS_ODU_CONS(in->client)) { |
| IPADBG("assigning policy to client:%d", |
| in->client); |
| |
| sys->ep->status.status_en = false; |
| sys->policy = IPA_POLICY_INTR_POLL_MODE; |
| sys->sps_option = (SPS_O_AUTO_ENABLE | SPS_O_EOT |
| | SPS_O_ACK_TRANSFERS); |
| sys->sps_callback = ipa_sps_irq_rx_notify; |
| INIT_WORK(&sys->work, ipa_wq_handle_rx); |
| INIT_DELAYED_WORK(&sys->switch_to_intr_work, |
| switch_to_intr_rx_work_func); |
| INIT_DELAYED_WORK(&sys->replenish_rx_work, |
| replenish_rx_work_func); |
| atomic_set(&sys->curr_polling_state, 0); |
| sys->rx_buff_sz = IPA_ODU_RX_BUFF_SZ; |
| sys->rx_pool_sz = in->desc_fifo_sz / |
| sizeof(struct sps_iovec) - 1; |
| if (sys->rx_pool_sz > IPA_ODU_RX_POOL_SZ) |
| sys->rx_pool_sz = IPA_ODU_RX_POOL_SZ; |
| sys->pyld_hdlr = ipa_odu_rx_pyld_hdlr; |
| sys->get_skb = ipa_get_skb_ipa_rx; |
| sys->free_skb = ipa_free_skb_rx; |
| sys->repl_hdlr = ipa_replenish_rx_cache; |
| sys->ep->wakelock_client = |
| IPA_WAKELOCK_REF_CLIENT_ODU_RX; |
| } else if (in->client == |
| IPA_CLIENT_MEMCPY_DMA_ASYNC_CONS) { |
| IPADBG("assigning policy to client:%d", |
| in->client); |
| sys->ep->status.status_en = false; |
| sys->policy = IPA_POLICY_INTR_POLL_MODE; |
| sys->sps_option = (SPS_O_AUTO_ENABLE | SPS_O_EOT |
| | SPS_O_ACK_TRANSFERS); |
| sys->sps_callback = ipa_sps_irq_rx_notify; |
| INIT_WORK(&sys->work, ipa_wq_handle_rx); |
| INIT_DELAYED_WORK(&sys->switch_to_intr_work, |
| switch_to_intr_rx_work_func); |
| } else if (in->client == |
| IPA_CLIENT_MEMCPY_DMA_SYNC_CONS) { |
| IPADBG("assigning policy to client:%d", |
| in->client); |
| sys->ep->status.status_en = false; |
| sys->policy = IPA_POLICY_NOINTR_MODE; |
| sys->sps_option = SPS_O_AUTO_ENABLE | |
| SPS_O_ACK_TRANSFERS | SPS_O_POLL; |
| } else { |
| IPAERR("Need to install a RX pipe hdlr\n"); |
| WARN_ON(1); |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| static int ipa_assign_policy(struct ipa_sys_connect_params *in, |
| struct ipa_sys_context *sys) |
| { |
| if (in->client == IPA_CLIENT_APPS_CMD_PROD) { |
| sys->policy = IPA_POLICY_INTR_MODE; |
| sys->sps_option = (SPS_O_AUTO_ENABLE | SPS_O_EOT); |
| sys->sps_callback = ipa_sps_irq_tx_no_aggr_notify; |
| return 0; |
| } |
| |
| if (ipa_ctx->ipa_hw_type == IPA_HW_v1_1) { |
| if (in->client == IPA_CLIENT_APPS_LAN_WAN_PROD) { |
| sys->policy = IPA_POLICY_INTR_POLL_MODE; |
| sys->sps_option = (SPS_O_AUTO_ENABLE | SPS_O_EOT | |
| SPS_O_ACK_TRANSFERS); |
| sys->sps_callback = ipa_sps_irq_tx_notify; |
| INIT_WORK(&sys->work, ipa_wq_handle_tx); |
| INIT_DELAYED_WORK(&sys->switch_to_intr_work, |
| switch_to_intr_tx_work_func); |
| atomic_set(&sys->curr_polling_state, 0); |
| } else if (in->client == IPA_CLIENT_APPS_LAN_CONS) { |
| sys->policy = IPA_POLICY_INTR_POLL_MODE; |
| sys->sps_option = (SPS_O_AUTO_ENABLE | SPS_O_EOT | |
| SPS_O_ACK_TRANSFERS); |
| sys->sps_callback = ipa_sps_irq_rx_notify; |
| INIT_WORK(&sys->work, ipa_wq_handle_rx); |
| INIT_DELAYED_WORK(&sys->switch_to_intr_work, |
| switch_to_intr_rx_work_func); |
| INIT_DELAYED_WORK(&sys->replenish_rx_work, |
| replenish_rx_work_func); |
| atomic_set(&sys->curr_polling_state, 0); |
| sys->rx_buff_sz = IPA_RX_SKB_SIZE; |
| sys->rx_pool_sz = IPA_RX_POOL_CEIL; |
| sys->pyld_hdlr = ipa_rx_pyld_hdlr; |
| sys->get_skb = ipa_get_skb_ipa_rx; |
| sys->free_skb = ipa_free_skb_rx; |
| sys->repl_hdlr = ipa_replenish_rx_cache; |
| } else if (IPA_CLIENT_IS_PROD(in->client)) { |
| sys->policy = IPA_POLICY_INTR_MODE; |
| sys->sps_option = (SPS_O_AUTO_ENABLE | SPS_O_EOT); |
| sys->sps_callback = ipa_sps_irq_tx_no_aggr_notify; |
| } else { |
| IPAERR("Need to install a RX pipe hdlr\n"); |
| WARN_ON(1); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } else if (ipa_ctx->ipa_hw_type >= IPA_HW_v2_0) |
| return ipa_assign_policy_v2(in, sys); |
| |
| IPAERR("Unsupported HW type %d\n", ipa_ctx->ipa_hw_type); |
| WARN_ON(1); |
| return -EINVAL; |
| } |
| |
| /** |
| * ipa_tx_client_rx_notify_release() - Callback function |
| * which will call the user supplied callback function to |
| * release the skb, or release it on its own if no callback |
| * function was supplied |
| * |
| * @user1: [in] - Data Descriptor |
| * @user2: [in] - endpoint idx |
| * |
| * This notified callback is for the destination client |
| * This function is supplied in ipa_tx_dp_mul |
| */ |
| static void ipa_tx_client_rx_notify_release(void *user1, int user2) |
| { |
| struct ipa_tx_data_desc *dd = (struct ipa_tx_data_desc *)user1; |
| int ep_idx = user2; |
| |
| IPADBG("Received data desc anchor:%p\n", dd); |
| |
| atomic_inc(&ipa_ctx->ep[ep_idx].avail_fifo_desc); |
| ipa_ctx->ep[ep_idx].wstats.rx_pkts_status_rcvd++; |
| |
| /* wlan host driver waits till tx complete before unload */ |
| IPADBG("ep=%d fifo_desc_free_count=%d\n", |
| ep_idx, atomic_read(&ipa_ctx->ep[ep_idx].avail_fifo_desc)); |
| IPADBG("calling client notify callback with priv:%p\n", |
| ipa_ctx->ep[ep_idx].priv); |
| |
| if (ipa_ctx->ep[ep_idx].client_notify) { |
| ipa_ctx->ep[ep_idx].client_notify(ipa_ctx->ep[ep_idx].priv, |
| IPA_WRITE_DONE, (unsigned long)user1); |
| ipa_ctx->ep[ep_idx].wstats.rx_hd_reply++; |
| } |
| } |
| /** |
| * ipa_tx_client_rx_pkt_status() - Callback function |
| * which will call the user supplied callback function to |
| * increase the available fifo descriptor |
| * |
| * @user1: [in] - Data Descriptor |
| * @user2: [in] - endpoint idx |
| * |
| * This notified callback is for the destination client |
| * This function is supplied in ipa_tx_dp_mul |
| */ |
| static void ipa_tx_client_rx_pkt_status(void *user1, int user2) |
| { |
| int ep_idx = user2; |
| |
| atomic_inc(&ipa_ctx->ep[ep_idx].avail_fifo_desc); |
| ipa_ctx->ep[ep_idx].wstats.rx_pkts_status_rcvd++; |
| } |
| |
| |
| /** |
| * ipa2_tx_dp_mul() - Data-path tx handler for multiple packets |
| * @src: [in] - Client that is sending data |
| * @ipa_tx_data_desc: [in] data descriptors from wlan |
| * |
| * this is used for to transfer data descriptors that received |
| * from WLAN1_PROD pipe to IPA HW |
| * |
| * The function will send data descriptors from WLAN1_PROD (one |
| * at a time) using sps_transfer_one. Will set EOT flag for last |
| * descriptor Once this send was done from SPS point-of-view the |
| * IPA driver will get notified by the supplied callback - |
| * ipa_sps_irq_tx_no_aggr_notify() |
| * |
| * ipa_sps_irq_tx_no_aggr_notify will call to the user supplied |
| * callback (from ipa_connect) |
| * |
| * Returns: 0 on success, negative on failure |
| */ |
| int ipa2_tx_dp_mul(enum ipa_client_type src, |
| struct ipa_tx_data_desc *data_desc) |
| { |
| /* The second byte in wlan header holds qmap id */ |
| #define IPA_WLAN_HDR_QMAP_ID_OFFSET 1 |
| struct ipa_tx_data_desc *entry; |
| struct ipa_sys_context *sys; |
| struct ipa_desc desc = { 0 }; |
| u32 num_desc, cnt; |
| int ep_idx; |
| |
| if (unlikely(!ipa_ctx)) { |
| IPAERR("IPA driver was not initialized\n"); |
| return -EINVAL; |
| } |
| |
| IPADBG("Received data desc anchor:%p\n", data_desc); |
| |
| spin_lock_bh(&ipa_ctx->wc_memb.ipa_tx_mul_spinlock); |
| |
| ep_idx = ipa2_get_ep_mapping(src); |
| if (unlikely(ep_idx == -1)) { |
| IPAERR("dest EP does not exist.\n"); |
| goto fail_send; |
| } |
| IPADBG("ep idx:%d\n", ep_idx); |
| sys = ipa_ctx->ep[ep_idx].sys; |
| |
| if (unlikely(ipa_ctx->ep[ep_idx].valid == 0)) { |
| IPAERR("dest EP not valid.\n"); |
| goto fail_send; |
| } |
| sys->ep->wstats.rx_hd_rcvd++; |
| |
| /* Calculate the number of descriptors */ |
| num_desc = 0; |
| list_for_each_entry(entry, &data_desc->link, link) { |
| num_desc++; |
| } |
| IPADBG("Number of Data Descriptors:%d", num_desc); |
| |
| if (atomic_read(&sys->ep->avail_fifo_desc) < num_desc) { |
| IPAERR("Insufficient data descriptors available\n"); |
| goto fail_send; |
| } |
| |
| /* Assign callback only for last data descriptor */ |
| cnt = 0; |
| list_for_each_entry(entry, &data_desc->link, link) { |
| IPADBG("Parsing data desc :%d\n", cnt); |
| cnt++; |
| ((u8 *)entry->pyld_buffer)[IPA_WLAN_HDR_QMAP_ID_OFFSET] = |
| (u8)sys->ep->cfg.meta.qmap_id; |
| desc.pyld = entry->pyld_buffer; |
| desc.len = entry->pyld_len; |
| desc.type = IPA_DATA_DESC_SKB; |
| desc.user1 = data_desc; |
| desc.user2 = ep_idx; |
| IPADBG("priv:%p pyld_buf:0x%p pyld_len:%d\n", |
| entry->priv, desc.pyld, desc.len); |
| |
| /* In case of last descriptor populate callback */ |
| if (cnt == num_desc) { |
| IPADBG("data desc:%p\n", data_desc); |
| desc.callback = ipa_tx_client_rx_notify_release; |
| } else { |
| desc.callback = ipa_tx_client_rx_pkt_status; |
| } |
| |
| IPADBG("calling ipa_send_one()\n"); |
| if (ipa_send_one(sys, &desc, true)) { |
| IPAERR("fail to send skb\n"); |
| sys->ep->wstats.rx_pkt_leak += (cnt-1); |
| sys->ep->wstats.rx_dp_fail++; |
| goto fail_send; |
| } |
| |
| if (atomic_read(&sys->ep->avail_fifo_desc) >= 0) |
| atomic_dec(&sys->ep->avail_fifo_desc); |
| |
| sys->ep->wstats.rx_pkts_rcvd++; |
| IPADBG("ep=%d fifo desc=%d\n", |
| ep_idx, atomic_read(&sys->ep->avail_fifo_desc)); |
| } |
| |
| sys->ep->wstats.rx_hd_processed++; |
| spin_unlock_bh(&ipa_ctx->wc_memb.ipa_tx_mul_spinlock); |
| return 0; |
| |
| fail_send: |
| spin_unlock_bh(&ipa_ctx->wc_memb.ipa_tx_mul_spinlock); |
| return -EFAULT; |
| |
| } |
| |
| void ipa2_free_skb(struct ipa_rx_data *data) |
| { |
| struct ipa_rx_pkt_wrapper *rx_pkt; |
| |
| if (unlikely(!ipa_ctx)) { |
| IPAERR("IPA driver was not initialized\n"); |
| return; |
| } |
| |
| spin_lock_bh(&ipa_ctx->wc_memb.wlan_spinlock); |
| |
| ipa_ctx->wc_memb.total_tx_pkts_freed++; |
| rx_pkt = container_of(data, struct ipa_rx_pkt_wrapper, data); |
| |
| ipa_skb_recycle(rx_pkt->data.skb); |
| (void)skb_put(rx_pkt->data.skb, IPA_WLAN_RX_BUFF_SZ); |
| |
| list_add_tail(&rx_pkt->link, |
| &ipa_ctx->wc_memb.wlan_comm_desc_list); |
| ipa_ctx->wc_memb.wlan_comm_free_cnt++; |
| |
| spin_unlock_bh(&ipa_ctx->wc_memb.wlan_spinlock); |
| } |
| |
| |
| /* Functions added to support kernel tests */ |
| |
| int ipa2_sys_setup(struct ipa_sys_connect_params *sys_in, |
| unsigned long *ipa_bam_hdl, |
| u32 *ipa_pipe_num, u32 *clnt_hdl, bool en_status) |
| { |
| struct ipa_ep_context *ep; |
| int ipa_ep_idx; |
| int result = -EINVAL; |
| |
| if (sys_in == NULL || clnt_hdl == NULL) { |
| IPAERR("NULL args\n"); |
| goto fail_gen; |
| } |
| |
| if (ipa_bam_hdl == NULL || ipa_pipe_num == NULL) { |
| IPAERR("NULL args\n"); |
| goto fail_gen; |
| } |
| if (sys_in->client >= IPA_CLIENT_MAX) { |
| IPAERR("bad parm client:%d\n", sys_in->client); |
| goto fail_gen; |
| } |
| |
| ipa_ep_idx = ipa2_get_ep_mapping(sys_in->client); |
| if (ipa_ep_idx == -1) { |
| IPAERR("Invalid client :%d\n", sys_in->client); |
| goto fail_gen; |
| } |
| |
| ep = &ipa_ctx->ep[ipa_ep_idx]; |
| |
| IPA_ACTIVE_CLIENTS_INC_EP(sys_in->client); |
| |
| if (ep->valid == 1) { |
| if (sys_in->client != IPA_CLIENT_APPS_LAN_WAN_PROD) { |
| IPAERR("EP %d already allocated\n", ipa_ep_idx); |
| goto fail_and_disable_clocks; |
| } else { |
| if (ipa2_cfg_ep_hdr(ipa_ep_idx, |
| &sys_in->ipa_ep_cfg.hdr)) { |
| IPAERR("fail to configure hdr prop of EP %d\n", |
| ipa_ep_idx); |
| result = -EFAULT; |
| goto fail_and_disable_clocks; |
| } |
| if (ipa2_cfg_ep_cfg(ipa_ep_idx, |
| &sys_in->ipa_ep_cfg.cfg)) { |
| IPAERR("fail to configure cfg prop of EP %d\n", |
| ipa_ep_idx); |
| result = -EFAULT; |
| goto fail_and_disable_clocks; |
| } |
| IPAERR("client %d (ep: %d) overlay ok sys=%p\n", |
| sys_in->client, ipa_ep_idx, ep->sys); |
| ep->client_notify = sys_in->notify; |
| ep->priv = sys_in->priv; |
| *clnt_hdl = ipa_ep_idx; |
| if (!ep->keep_ipa_awake) |
| IPA_ACTIVE_CLIENTS_DEC_EP(sys_in->client); |
| |
| return 0; |
| } |
| } |
| |
| memset(ep, 0, offsetof(struct ipa_ep_context, sys)); |
| |
| ep->valid = 1; |
| ep->client = sys_in->client; |
| ep->client_notify = sys_in->notify; |
| ep->priv = sys_in->priv; |
| ep->keep_ipa_awake = true; |
| |
| result = ipa_enable_data_path(ipa_ep_idx); |
| if (result) { |
| IPAERR("enable data path failed res=%d clnt=%d.\n", |
| result, ipa_ep_idx); |
| goto fail_gen2; |
| } |
| |
| if (!ep->skip_ep_cfg) { |
| if (ipa2_cfg_ep(ipa_ep_idx, &sys_in->ipa_ep_cfg)) { |
| IPAERR("fail to configure EP.\n"); |
| goto fail_gen2; |
| } |
| if (ipa2_cfg_ep_status(ipa_ep_idx, &ep->status)) { |
| IPAERR("fail to configure status of EP.\n"); |
| goto fail_gen2; |
| } |
| IPADBG("ep configuration successful\n"); |
| } else { |
| IPADBG("skipping ep configuration\n"); |
| } |
| |
| *clnt_hdl = ipa_ep_idx; |
| |
| *ipa_pipe_num = ipa_ep_idx; |
| *ipa_bam_hdl = ipa_ctx->bam_handle; |
| |
| if (!ep->keep_ipa_awake) |
| IPA_ACTIVE_CLIENTS_DEC_EP(sys_in->client); |
| |
| ipa_ctx->skip_ep_cfg_shadow[ipa_ep_idx] = ep->skip_ep_cfg; |
| IPADBG("client %d (ep: %d) connected sys=%p\n", sys_in->client, |
| ipa_ep_idx, ep->sys); |
| |
| return 0; |
| |
| fail_gen2: |
| fail_and_disable_clocks: |
| IPA_ACTIVE_CLIENTS_DEC_EP(sys_in->client); |
| fail_gen: |
| return result; |
| } |
| |
| int ipa2_sys_teardown(u32 clnt_hdl) |
| { |
| struct ipa_ep_context *ep; |
| |
| if (clnt_hdl >= ipa_ctx->ipa_num_pipes || |
| ipa_ctx->ep[clnt_hdl].valid == 0) { |
| IPAERR("bad parm(Either endpoint or client hdl invalid)\n"); |
| return -EINVAL; |
| } |
| |
| ep = &ipa_ctx->ep[clnt_hdl]; |
| |
| if (!ep->keep_ipa_awake) |
| IPA_ACTIVE_CLIENTS_INC_EP(ipa2_get_client_mapping(clnt_hdl)); |
| |
| ipa_disable_data_path(clnt_hdl); |
| ep->valid = 0; |
| |
| IPA_ACTIVE_CLIENTS_DEC_EP(ipa2_get_client_mapping(clnt_hdl)); |
| |
| IPADBG("client (ep: %d) disconnected\n", clnt_hdl); |
| |
| return 0; |
| } |
| |
| int ipa2_sys_update_gsi_hdls(u32 clnt_hdl, unsigned long gsi_ch_hdl, |
| unsigned long gsi_ev_hdl) |
| { |
| IPAERR("GSI not supported in IPAv2"); |
| return -EFAULT; |
| } |
| |
| |
| /** |
| * ipa_adjust_ra_buff_base_sz() |
| * |
| * Return value: the largest power of two which is smaller |
| * than the input value |
| */ |
| static u32 ipa_adjust_ra_buff_base_sz(u32 aggr_byte_limit) |
| { |
| aggr_byte_limit += IPA_MTU; |
| aggr_byte_limit += IPA_GENERIC_RX_BUFF_LIMIT; |
| aggr_byte_limit--; |
| aggr_byte_limit |= aggr_byte_limit >> 1; |
| aggr_byte_limit |= aggr_byte_limit >> 2; |
| aggr_byte_limit |= aggr_byte_limit >> 4; |
| aggr_byte_limit |= aggr_byte_limit >> 8; |
| aggr_byte_limit |= aggr_byte_limit >> 16; |
| aggr_byte_limit++; |
| return aggr_byte_limit >> 1; |
| } |