| /* 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 <linux/msm_gsi.h> |
| #include "ipa_i.h" |
| #include "ipa_trace.h" |
| #include "ipahal/ipahal.h" |
| #include "ipahal/ipahal_fltrt.h" |
| |
| #define IPA_WAN_AGGR_PKT_CNT 5 |
| #define IPA_LAST_DESC_CNT 0xFFFF |
| #define POLLING_INACTIVITY_RX 40 |
| #define POLLING_MIN_SLEEP_RX 1010 |
| #define POLLING_MAX_SLEEP_RX 1050 |
| #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) |
| |
| /* less 1 nominal MTU (1500 bytes) rounded to units of KB */ |
| #define IPA_ADJUST_AGGR_BYTE_LIMIT(X) (((X) - IPA_MTU)/1000) |
| |
| #define IPA_RX_BUFF_CLIENT_HEADROOM 256 |
| |
| #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 64 |
| #define IPA_SIZE_DL_CSUM_META_TRAILER 8 |
| |
| #define IPA_GSI_MAX_CH_LOW_WEIGHT 15 |
| #define IPA_GSI_EVT_RING_INT_MODT (32 * 1) /* 1ms under 32KHz clock */ |
| |
| #define IPA_GSI_CH_20_WA_NUM_CH_TO_ALLOC 10 |
| /* The below virtual channel cannot be used by any entity */ |
| #define IPA_GSI_CH_20_WA_VIRT_CHAN 29 |
| |
| #define IPA_DEFAULT_SYS_YELLOW_WM 32 |
| #define IPA_REPL_XFER_THRESH 10 |
| |
| #define IPA_TX_SEND_COMPL_NOP_DELAY_NS (2 * 1000 * 1000) |
| |
| static struct sk_buff *ipa3_get_skb_ipa_rx(unsigned int len, gfp_t flags); |
| static void ipa3_replenish_wlan_rx_cache(struct ipa3_sys_context *sys); |
| static void ipa3_replenish_rx_cache(struct ipa3_sys_context *sys); |
| static void ipa3_replenish_rx_work_func(struct work_struct *work); |
| static void ipa3_fast_replenish_rx_cache(struct ipa3_sys_context *sys); |
| static void ipa3_wq_handle_rx(struct work_struct *work); |
| static void ipa3_wq_rx_common(struct ipa3_sys_context *sys, u32 size); |
| static void ipa3_wlan_wq_rx_common(struct ipa3_sys_context *sys, |
| u32 size); |
| static int ipa3_assign_policy(struct ipa_sys_connect_params *in, |
| struct ipa3_sys_context *sys); |
| static void ipa3_cleanup_rx(struct ipa3_sys_context *sys); |
| static void ipa3_wq_rx_avail(struct work_struct *work); |
| static void ipa3_alloc_wlan_rx_common_cache(u32 size); |
| static void ipa3_cleanup_wlan_rx_common_cache(void); |
| static void ipa3_wq_repl_rx(struct work_struct *work); |
| static void ipa3_dma_memcpy_notify(struct ipa3_sys_context *sys, |
| struct ipa_mem_buffer *mem_info); |
| static int ipa_gsi_setup_channel(struct ipa_sys_connect_params *in, |
| struct ipa3_ep_context *ep); |
| static int ipa_populate_tag_field(struct ipa3_desc *desc, |
| struct ipa3_tx_pkt_wrapper *tx_pkt, |
| struct ipahal_imm_cmd_pyld **tag_pyld_ret); |
| static int ipa_poll_gsi_pkt(struct ipa3_sys_context *sys, |
| struct ipa_mem_buffer *mem_info); |
| static unsigned long tag_to_pointer_wa(uint64_t tag); |
| static uint64_t pointer_to_tag_wa(struct ipa3_tx_pkt_wrapper *tx_pkt); |
| |
| static u32 ipa_adjust_ra_buff_base_sz(u32 aggr_byte_limit); |
| |
| static void ipa3_wq_write_done_common(struct ipa3_sys_context *sys, |
| struct ipa3_tx_pkt_wrapper *tx_pkt) |
| { |
| struct ipa3_tx_pkt_wrapper *next_pkt; |
| int i, cnt; |
| |
| if (unlikely(tx_pkt == NULL)) { |
| IPAERR("tx_pkt is NULL\n"); |
| return; |
| } |
| |
| cnt = tx_pkt->cnt; |
| IPADBG_LOW("cnt: %d\n", cnt); |
| 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; |
| } |
| next_pkt = list_next_entry(tx_pkt, link); |
| list_del(&tx_pkt->link); |
| sys->len--; |
| spin_unlock_bh(&sys->spinlock); |
| if (!tx_pkt->no_unmap_dma) { |
| if (tx_pkt->type != IPA_DATA_DESC_SKB_PAGED) { |
| dma_unmap_single(ipa3_ctx->pdev, |
| tx_pkt->mem.phys_base, |
| tx_pkt->mem.size, |
| DMA_TO_DEVICE); |
| } else { |
| dma_unmap_page(ipa3_ctx->pdev, |
| next_pkt->mem.phys_base, |
| next_pkt->mem.size, |
| DMA_TO_DEVICE); |
| } |
| } |
| if (tx_pkt->callback) |
| tx_pkt->callback(tx_pkt->user1, tx_pkt->user2); |
| |
| kmem_cache_free(ipa3_ctx->tx_pkt_wrapper_cache, tx_pkt); |
| tx_pkt = next_pkt; |
| } |
| } |
| |
| static void ipa3_wq_write_done_status(int src_pipe, |
| struct ipa3_tx_pkt_wrapper *tx_pkt) |
| { |
| struct ipa3_sys_context *sys; |
| |
| WARN_ON(src_pipe >= ipa3_ctx->ipa_num_pipes); |
| |
| if (!ipa3_ctx->ep[src_pipe].status.status_en) |
| return; |
| |
| sys = ipa3_ctx->ep[src_pipe].sys; |
| if (!sys) |
| return; |
| |
| ipa3_wq_write_done_common(sys, tx_pkt); |
| } |
| |
| /** |
| * 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) |
| */ |
| static void ipa3_wq_write_done(struct work_struct *work) |
| { |
| struct ipa3_tx_pkt_wrapper *tx_pkt; |
| struct ipa3_sys_context *sys; |
| struct ipa3_tx_pkt_wrapper *this_pkt; |
| |
| tx_pkt = container_of(work, struct ipa3_tx_pkt_wrapper, work); |
| sys = tx_pkt->sys; |
| spin_lock_bh(&sys->spinlock); |
| this_pkt = list_first_entry(&sys->head_desc_list, |
| struct ipa3_tx_pkt_wrapper, link); |
| while (tx_pkt != this_pkt) { |
| spin_unlock_bh(&sys->spinlock); |
| ipa3_wq_write_done_common(sys, this_pkt); |
| spin_lock_bh(&sys->spinlock); |
| this_pkt = list_first_entry(&sys->head_desc_list, |
| struct ipa3_tx_pkt_wrapper, link); |
| } |
| spin_unlock_bh(&sys->spinlock); |
| ipa3_wq_write_done_common(sys, tx_pkt); |
| } |
| |
| |
| static void ipa3_send_nop_desc(struct work_struct *work) |
| { |
| struct ipa3_sys_context *sys = container_of(work, |
| struct ipa3_sys_context, work); |
| struct gsi_xfer_elem nop_xfer; |
| struct ipa3_tx_pkt_wrapper *tx_pkt; |
| |
| IPADBG_LOW("gsi send NOP for ch: %lu\n", sys->ep->gsi_chan_hdl); |
| tx_pkt = kmem_cache_zalloc(ipa3_ctx->tx_pkt_wrapper_cache, GFP_KERNEL); |
| if (!tx_pkt) { |
| IPAERR("failed to alloc tx wrapper\n"); |
| queue_work(sys->wq, &sys->work); |
| return; |
| } |
| |
| INIT_LIST_HEAD(&tx_pkt->link); |
| tx_pkt->cnt = 1; |
| INIT_WORK(&tx_pkt->work, ipa3_wq_write_done); |
| tx_pkt->no_unmap_dma = true; |
| tx_pkt->sys = sys; |
| spin_lock_bh(&sys->spinlock); |
| list_add_tail(&tx_pkt->link, &sys->head_desc_list); |
| spin_unlock_bh(&sys->spinlock); |
| |
| memset(&nop_xfer, 0, sizeof(nop_xfer)); |
| nop_xfer.type = GSI_XFER_ELEM_NOP; |
| nop_xfer.flags = GSI_XFER_FLAG_EOT; |
| nop_xfer.xfer_user_data = tx_pkt; |
| if (gsi_queue_xfer(sys->ep->gsi_chan_hdl, 1, &nop_xfer, true)) { |
| IPAERR("gsi_queue_xfer for ch:%lu failed\n", |
| sys->ep->gsi_chan_hdl); |
| queue_work(sys->wq, &sys->work); |
| return; |
| } |
| sys->len_pending_xfer = 0; |
| |
| } |
| |
| |
| /** |
| * ipa3_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 GPI connection. |
| * - ipa3_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 packet (command or data) that will be sent will also be saved in |
| * ipa3_sys_context for later check that all data was sent |
| * |
| * Return codes: 0: success, -EFAULT: failure |
| */ |
| int ipa3_send(struct ipa3_sys_context *sys, |
| u32 num_desc, |
| struct ipa3_desc *desc, |
| bool in_atomic) |
| { |
| struct ipa3_tx_pkt_wrapper *tx_pkt, *tx_pkt_first; |
| struct ipahal_imm_cmd_pyld *tag_pyld_ret = NULL; |
| struct ipa3_tx_pkt_wrapper *next_pkt; |
| struct gsi_xfer_elem *gsi_xfer_elem_array = NULL; |
| int i = 0; |
| int j; |
| int result; |
| u32 mem_flag = GFP_ATOMIC; |
| const struct ipa_gsi_ep_config *gsi_ep_cfg; |
| |
| if (unlikely(!in_atomic)) |
| mem_flag = GFP_KERNEL; |
| |
| gsi_ep_cfg = ipa3_get_gsi_ep_info(sys->ep->client); |
| if (unlikely(!gsi_ep_cfg)) { |
| IPAERR("failed to get gsi EP config for client=%d\n", |
| sys->ep->client); |
| return -EFAULT; |
| } |
| if (unlikely(num_desc > gsi_ep_cfg->ipa_if_tlv)) { |
| IPAERR("Too many chained descriptors need=%d max=%d\n", |
| num_desc, gsi_ep_cfg->ipa_if_tlv); |
| WARN_ON(1); |
| return -EPERM; |
| } |
| |
| gsi_xfer_elem_array = |
| kzalloc(num_desc * sizeof(struct gsi_xfer_elem), |
| mem_flag); |
| if (!gsi_xfer_elem_array) { |
| IPAERR("Failed to alloc mem for gsi xfer array.\n"); |
| return -EFAULT; |
| } |
| |
| spin_lock_bh(&sys->spinlock); |
| |
| for (i = 0; i < num_desc; i++) { |
| tx_pkt = kmem_cache_zalloc(ipa3_ctx->tx_pkt_wrapper_cache, |
| mem_flag); |
| if (!tx_pkt) { |
| IPAERR("failed to alloc tx wrapper\n"); |
| goto failure; |
| } |
| |
| INIT_LIST_HEAD(&tx_pkt->link); |
| |
| if (i == 0) { |
| tx_pkt_first = tx_pkt; |
| tx_pkt->cnt = num_desc; |
| INIT_WORK(&tx_pkt->work, ipa3_wq_write_done); |
| } |
| |
| /* populate tag field */ |
| if (desc[i].is_tag_status) { |
| if (ipa_populate_tag_field(&desc[i], tx_pkt, |
| &tag_pyld_ret)) { |
| IPAERR("Failed to populate tag field\n"); |
| goto failure_dma_map; |
| } |
| } |
| |
| 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(ipa3_ctx->pdev, |
| tx_pkt->mem.base, |
| tx_pkt->mem.size, |
| DMA_TO_DEVICE); |
| } 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(ipa3_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 (dma_mapping_error(ipa3_ctx->pdev, tx_pkt->mem.phys_base)) { |
| IPAERR("failed to do dma map.\n"); |
| goto failure_dma_map; |
| } |
| |
| tx_pkt->sys = sys; |
| tx_pkt->callback = desc[i].callback; |
| tx_pkt->user1 = desc[i].user1; |
| tx_pkt->user2 = desc[i].user2; |
| |
| list_add_tail(&tx_pkt->link, &sys->head_desc_list); |
| |
| gsi_xfer_elem_array[i].addr = tx_pkt->mem.phys_base; |
| |
| /* |
| * Special treatment for immediate commands, where |
| * the structure of the descriptor is different |
| */ |
| if (desc[i].type == IPA_IMM_CMD_DESC) { |
| gsi_xfer_elem_array[i].len = desc[i].opcode; |
| gsi_xfer_elem_array[i].type = |
| GSI_XFER_ELEM_IMME_CMD; |
| } else { |
| gsi_xfer_elem_array[i].len = desc[i].len; |
| gsi_xfer_elem_array[i].type = |
| GSI_XFER_ELEM_DATA; |
| } |
| |
| if (i == (num_desc - 1)) { |
| if (!sys->use_comm_evt_ring) { |
| gsi_xfer_elem_array[i].flags |= |
| GSI_XFER_FLAG_EOT; |
| gsi_xfer_elem_array[i].flags |= |
| GSI_XFER_FLAG_BEI; |
| } |
| gsi_xfer_elem_array[i].xfer_user_data = |
| tx_pkt_first; |
| } else { |
| gsi_xfer_elem_array[i].flags |= |
| GSI_XFER_FLAG_CHAIN; |
| } |
| } |
| |
| IPADBG_LOW("ch:%lu queue xfer\n", sys->ep->gsi_chan_hdl); |
| result = gsi_queue_xfer(sys->ep->gsi_chan_hdl, num_desc, |
| gsi_xfer_elem_array, true); |
| if (result != GSI_STATUS_SUCCESS) { |
| IPAERR("GSI xfer failed.\n"); |
| goto failure; |
| } |
| kfree(gsi_xfer_elem_array); |
| |
| spin_unlock_bh(&sys->spinlock); |
| |
| /* set the timer for sending the NOP descriptor */ |
| if (sys->use_comm_evt_ring && !hrtimer_active(&sys->db_timer)) { |
| ktime_t time = ktime_set(0, IPA_TX_SEND_COMPL_NOP_DELAY_NS); |
| |
| IPADBG_LOW("scheduling timer for ch %lu\n", |
| sys->ep->gsi_chan_hdl); |
| hrtimer_start(&sys->db_timer, time, HRTIMER_MODE_REL); |
| } |
| |
| return 0; |
| |
| failure_dma_map: |
| kmem_cache_free(ipa3_ctx->tx_pkt_wrapper_cache, tx_pkt); |
| |
| failure: |
| ipahal_destroy_imm_cmd(tag_pyld_ret); |
| tx_pkt = tx_pkt_first; |
| for (j = 0; j < i; j++) { |
| next_pkt = list_next_entry(tx_pkt, link); |
| list_del(&tx_pkt->link); |
| |
| if (!tx_pkt->no_unmap_dma) { |
| if (desc[j].type != IPA_DATA_DESC_SKB_PAGED) { |
| dma_unmap_single(ipa3_ctx->pdev, |
| tx_pkt->mem.phys_base, |
| tx_pkt->mem.size, DMA_TO_DEVICE); |
| } else { |
| dma_unmap_page(ipa3_ctx->pdev, |
| tx_pkt->mem.phys_base, |
| tx_pkt->mem.size, |
| DMA_TO_DEVICE); |
| } |
| } |
| kmem_cache_free(ipa3_ctx->tx_pkt_wrapper_cache, tx_pkt); |
| tx_pkt = next_pkt; |
| } |
| |
| kfree(gsi_xfer_elem_array); |
| |
| spin_unlock_bh(&sys->spinlock); |
| return -EFAULT; |
| } |
| |
| /** |
| * ipa3_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 ipa3_send_one(struct ipa3_sys_context *sys, struct ipa3_desc *desc, |
| bool in_atomic) |
| { |
| return ipa3_send(sys, 1, desc, in_atomic); |
| } |
| |
| /** |
| * ipa3_transport_irq_cmd_ack - callback function which will be called by |
| * the transport 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 (ipa3_send_cmd()) |
| */ |
| static void ipa3_transport_irq_cmd_ack(void *user1, int user2) |
| { |
| struct ipa3_desc *desc = (struct ipa3_desc *)user1; |
| |
| if (!desc) { |
| IPAERR("desc is NULL\n"); |
| WARN_ON(1); |
| return; |
| } |
| IPADBG_LOW("got ack for cmd=%d\n", desc->opcode); |
| complete(&desc->xfer_done); |
| } |
| |
| /** |
| * ipa3_transport_irq_cmd_ack_free - callback function which will be |
| * called by the transport driver after an immediate command is complete. |
| * This function will also free the completion object once it is done. |
| * @tag_comp: pointer to the completion object |
| * @ignored: parameter not used |
| * |
| * Complete the immediate commands completion object, this will release the |
| * thread which waits on this completion object (ipa3_send_cmd()) |
| */ |
| static void ipa3_transport_irq_cmd_ack_free(void *tag_comp, int ignored) |
| { |
| struct ipa3_tag_completion *comp = tag_comp; |
| |
| if (!comp) { |
| IPAERR("comp is NULL\n"); |
| return; |
| } |
| |
| complete(&comp->comp); |
| if (atomic_dec_return(&comp->cnt) == 0) |
| kfree(comp); |
| } |
| |
| /** |
| * ipa3_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 ipa3_desc should not be set by the caller |
| * for this function. |
| */ |
| int ipa3_send_cmd(u16 num_desc, struct ipa3_desc *descr) |
| { |
| struct ipa3_desc *desc; |
| int i, result = 0; |
| struct ipa3_sys_context *sys; |
| int ep_idx; |
| |
| for (i = 0; i < num_desc; i++) |
| IPADBG("sending imm cmd %d\n", descr[i].opcode); |
| |
| ep_idx = ipa3_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 = ipa3_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 = ipa3_transport_irq_cmd_ack; |
| descr->user1 = descr; |
| if (ipa3_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 = ipa3_transport_irq_cmd_ack; |
| desc->user1 = desc; |
| if (ipa3_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; |
| } |
| |
| /** |
| * ipa3_send_cmd_timeout - send immediate commands with limited time |
| * waiting for ACK from IPA HW |
| * @num_desc: number of descriptors within the desc struct |
| * @descr: descriptor structure |
| * @timeout: millisecond to wait till get ACK from IPA HW |
| * |
| * Function will block till command gets ACK from IPA HW or timeout. |
| * Caller needs to free any resources it allocated after function returns |
| * The callback in ipa3_desc should not be set by the caller |
| * for this function. |
| */ |
| int ipa3_send_cmd_timeout(u16 num_desc, struct ipa3_desc *descr, u32 timeout) |
| { |
| struct ipa3_desc *desc; |
| int i, result = 0; |
| struct ipa3_sys_context *sys; |
| int ep_idx; |
| int completed; |
| struct ipa3_tag_completion *comp; |
| |
| for (i = 0; i < num_desc; i++) |
| IPADBG("sending imm cmd %d\n", descr[i].opcode); |
| |
| ep_idx = ipa3_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; |
| } |
| |
| comp = kzalloc(sizeof(*comp), GFP_ATOMIC); |
| if (!comp) { |
| IPAERR("no mem\n"); |
| return -ENOMEM; |
| } |
| init_completion(&comp->comp); |
| |
| /* completion needs to be released from both here and in ack callback */ |
| atomic_set(&comp->cnt, 2); |
| |
| sys = ipa3_ctx->ep[ep_idx].sys; |
| IPA_ACTIVE_CLIENTS_INC_SIMPLE(); |
| |
| if (num_desc == 1) { |
| if (descr->callback || descr->user1) |
| WARN_ON(1); |
| |
| descr->callback = ipa3_transport_irq_cmd_ack_free; |
| descr->user1 = comp; |
| if (ipa3_send_one(sys, descr, true)) { |
| IPAERR("fail to send immediate command\n"); |
| kfree(comp); |
| result = -EFAULT; |
| goto bail; |
| } |
| } else { |
| desc = &descr[num_desc - 1]; |
| |
| if (desc->callback || desc->user1) |
| WARN_ON(1); |
| |
| desc->callback = ipa3_transport_irq_cmd_ack_free; |
| desc->user1 = comp; |
| if (ipa3_send(sys, num_desc, descr, true)) { |
| IPAERR("fail to send multiple immediate command set\n"); |
| kfree(comp); |
| result = -EFAULT; |
| goto bail; |
| } |
| } |
| |
| completed = wait_for_completion_timeout( |
| &comp->comp, msecs_to_jiffies(timeout)); |
| if (!completed) |
| IPADBG("timeout waiting for imm-cmd ACK\n"); |
| |
| if (atomic_dec_return(&comp->cnt) == 0) |
| kfree(comp); |
| |
| bail: |
| IPA_ACTIVE_CLIENTS_DEC_SIMPLE(); |
| return result; |
| } |
| |
| /** |
| * ipa3_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 ipa3_handle_rx_core(struct ipa3_sys_context *sys, bool process_all, |
| bool in_poll_state) |
| { |
| int ret; |
| int cnt = 0; |
| struct ipa_mem_buffer mem_info = { 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_gsi_pkt(sys, &mem_info); |
| if (ret) |
| break; |
| |
| if (IPA_CLIENT_IS_MEMCPY_DMA_CONS(sys->ep->client)) |
| ipa3_dma_memcpy_notify(sys, &mem_info); |
| else if (IPA_CLIENT_IS_WLAN_CONS(sys->ep->client)) |
| ipa3_wlan_wq_rx_common(sys, mem_info.size); |
| else |
| ipa3_wq_rx_common(sys, mem_info.size); |
| |
| ++cnt; |
| } |
| return cnt; |
| } |
| |
| /** |
| * ipa3_rx_switch_to_intr_mode() - Operate the Rx data path in interrupt mode |
| */ |
| static void ipa3_rx_switch_to_intr_mode(struct ipa3_sys_context *sys) |
| { |
| int ret; |
| |
| if (!atomic_read(&sys->curr_polling_state)) { |
| IPAERR("already in intr mode\n"); |
| goto fail; |
| } |
| atomic_set(&sys->curr_polling_state, 0); |
| ipa3_dec_release_wakelock(); |
| ret = gsi_config_channel_mode(sys->ep->gsi_chan_hdl, |
| GSI_CHAN_MODE_CALLBACK); |
| if (ret != GSI_STATUS_SUCCESS) { |
| IPAERR("Failed to switch to intr mode.\n"); |
| goto fail; |
| } |
| return; |
| |
| fail: |
| queue_delayed_work(sys->wq, &sys->switch_to_intr_work, |
| msecs_to_jiffies(1)); |
| } |
| |
| /** |
| * ipa3_handle_rx() - handle packet reception. This function is executed in the |
| * context of a work queue. |
| * @work: work struct needed by the work queue |
| * |
| * ipa3_handle_rx_core() is run in polling mode. After all packets has been |
| * received, the driver switches back to interrupt mode. |
| */ |
| static void ipa3_handle_rx(struct ipa3_sys_context *sys) |
| { |
| int inactive_cycles = 0; |
| int cnt; |
| |
| IPA_ACTIVE_CLIENTS_INC_SIMPLE(); |
| do { |
| cnt = ipa3_handle_rx_core(sys, true, true); |
| if (cnt == 0) |
| inactive_cycles++; |
| else |
| inactive_cycles = 0; |
| |
| trace_idle_sleep_enter3(sys->ep->client); |
| usleep_range(POLLING_MIN_SLEEP_RX, POLLING_MAX_SLEEP_RX); |
| trace_idle_sleep_exit3(sys->ep->client); |
| |
| /* |
| * 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 - sys->len_pending_xfer == 0) |
| break; |
| |
| } while (inactive_cycles <= POLLING_INACTIVITY_RX); |
| |
| trace_poll_to_intr3(sys->ep->client); |
| ipa3_rx_switch_to_intr_mode(sys); |
| IPA_ACTIVE_CLIENTS_DEC_SIMPLE(); |
| } |
| |
| static void ipa3_switch_to_intr_rx_work_func(struct work_struct *work) |
| { |
| struct delayed_work *dwork; |
| struct ipa3_sys_context *sys; |
| |
| dwork = container_of(work, struct delayed_work, work); |
| sys = container_of(dwork, struct ipa3_sys_context, switch_to_intr_work); |
| |
| if (sys->ep->napi_enabled) { |
| /* interrupt mode is done in ipa3_rx_poll context */ |
| ipa_assert(); |
| } else |
| ipa3_handle_rx(sys); |
| } |
| |
| enum hrtimer_restart ipa3_ring_doorbell_timer_fn(struct hrtimer *param) |
| { |
| struct ipa3_sys_context *sys = container_of(param, |
| struct ipa3_sys_context, db_timer); |
| |
| queue_work(sys->wq, &sys->work); |
| return HRTIMER_NORESTART; |
| } |
| |
| /** |
| * ipa3_setup_sys_pipe() - Setup an IPA GPI pipe and perform |
| * IPA EP configuration |
| * @sys_in: [in] input needed to setup the pipe and configure EP |
| * @clnt_hdl: [out] client handle |
| * |
| * - configure the end-point registers with the supplied |
| * parameters from the user. |
| * - Creates a GPI connection with IPA. |
| * - allocate descriptor FIFO |
| * |
| * Returns: 0 on success, negative on failure |
| */ |
| int ipa3_setup_sys_pipe(struct ipa_sys_connect_params *sys_in, u32 *clnt_hdl) |
| { |
| struct ipa3_ep_context *ep; |
| int ipa_ep_idx; |
| int result = -EINVAL; |
| char buff[IPA_RESOURCE_NAME_MAX]; |
| |
| 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 = ipa3_get_ep_mapping(sys_in->client); |
| if (ipa_ep_idx == -1) { |
| IPAERR("Invalid client.\n"); |
| goto fail_gen; |
| } |
| |
| ep = &ipa3_ctx->ep[ipa_ep_idx]; |
| if (ep->valid == 1) { |
| IPAERR("EP %d already allocated.\n", ipa_ep_idx); |
| goto fail_gen; |
| } |
| |
| IPA_ACTIVE_CLIENTS_INC_EP(sys_in->client); |
| memset(ep, 0, offsetof(struct ipa3_ep_context, sys)); |
| |
| if (!ep->sys) { |
| ep->sys = kzalloc(sizeof(struct ipa3_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_MEM_RECLAIM | WQ_UNBOUND | WQ_SYSFS, 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_MEM_RECLAIM | WQ_UNBOUND | WQ_SYSFS, 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); |
| hrtimer_init(&ep->sys->db_timer, CLOCK_MONOTONIC, |
| HRTIMER_MODE_REL); |
| ep->sys->db_timer.function = ipa3_ring_doorbell_timer_fn; |
| } else { |
| memset(ep->sys, 0, offsetof(struct ipa3_sys_context, ep)); |
| } |
| |
| ep->skip_ep_cfg = sys_in->skip_ep_cfg; |
| if (ipa3_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 / IPA_FIFO_ELEMENT_SIZE) - 1)); |
| |
| if (ep->status.status_en && IPA_CLIENT_IS_CONS(ep->client) && |
| ep->sys->status_stat == NULL) { |
| ep->sys->status_stat = |
| kzalloc(sizeof(struct ipa3_status_stats), GFP_KERNEL); |
| if (!ep->sys->status_stat) { |
| IPAERR("no memory\n"); |
| goto fail_gen2; |
| } |
| } |
| |
| if (!ep->skip_ep_cfg) { |
| if (ipa3_cfg_ep(ipa_ep_idx, &sys_in->ipa_ep_cfg)) { |
| IPAERR("fail to configure EP.\n"); |
| goto fail_gen2; |
| } |
| if (ipa3_cfg_ep_status(ipa_ep_idx, &ep->status)) { |
| IPAERR("fail to configure status of EP.\n"); |
| goto fail_gen2; |
| } |
| IPADBG("ep %d configuration successful\n", ipa_ep_idx); |
| } else { |
| IPADBG("skipping ep %d configuration\n", ipa_ep_idx); |
| } |
| |
| result = ipa_gsi_setup_channel(sys_in, ep); |
| if (result) { |
| IPAERR("Failed to setup GSI channel\n"); |
| goto fail_gen2; |
| } |
| |
| *clnt_hdl = ipa_ep_idx; |
| |
| if (ep->sys->repl_hdlr == ipa3_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 = ipa3_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); |
| ipa3_wq_repl_rx(&ep->sys->repl_work); |
| } |
| } |
| |
| if (IPA_CLIENT_IS_CONS(sys_in->client)) |
| ipa3_replenish_rx_cache(ep->sys); |
| |
| if (IPA_CLIENT_IS_WLAN_CONS(sys_in->client)) { |
| ipa3_alloc_wlan_rx_common_cache(IPA_WLAN_COMM_RX_POOL_LOW); |
| atomic_inc(&ipa3_ctx->wc_memb.active_clnt_cnt); |
| } |
| |
| ipa3_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 (ipa3_ctx->modem_cfg_emb_pipe_flt && |
| sys_in->client == IPA_CLIENT_APPS_WAN_PROD) |
| IPADBG("modem cfg emb pipe flt\n"); |
| else |
| ipa3_install_dflt_flt_rules(ipa_ep_idx); |
| } |
| |
| result = ipa3_enable_data_path(ipa_ep_idx); |
| if (result) { |
| IPAERR("enable data path failed res=%d ep=%d.\n", result, |
| ipa_ep_idx); |
| goto fail_gen2; |
| } |
| |
| 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_gen2: |
| destroy_workqueue(ep->sys->repl_wq); |
| fail_wq2: |
| destroy_workqueue(ep->sys->wq); |
| fail_wq: |
| kfree(ep->sys); |
| memset(&ipa3_ctx->ep[ipa_ep_idx], 0, sizeof(struct ipa3_ep_context)); |
| fail_and_disable_clocks: |
| IPA_ACTIVE_CLIENTS_DEC_EP(sys_in->client); |
| fail_gen: |
| return result; |
| } |
| |
| /** |
| * ipa3_teardown_sys_pipe() - Teardown the GPI pipe and cleanup IPA EP |
| * @clnt_hdl: [in] the handle obtained from ipa3_setup_sys_pipe |
| * |
| * Returns: 0 on success, negative on failure |
| */ |
| int ipa3_teardown_sys_pipe(u32 clnt_hdl) |
| { |
| struct ipa3_ep_context *ep; |
| int empty; |
| int result; |
| int i; |
| |
| if (clnt_hdl >= ipa3_ctx->ipa_num_pipes || |
| ipa3_ctx->ep[clnt_hdl].valid == 0) { |
| IPAERR("bad parm.\n"); |
| return -EINVAL; |
| } |
| |
| ep = &ipa3_ctx->ep[clnt_hdl]; |
| |
| if (!ep->keep_ipa_awake) |
| IPA_ACTIVE_CLIENTS_INC_EP(ipa3_get_client_mapping(clnt_hdl)); |
| |
| ipa3_disable_data_path(clnt_hdl); |
| if (ep->napi_enabled) { |
| 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); |
| flush_workqueue(ep->sys->wq); |
| /* channel stop might fail on timeout if IPA is busy */ |
| for (i = 0; i < IPA_GSI_CHANNEL_STOP_MAX_RETRY; i++) { |
| result = ipa3_stop_gsi_channel(clnt_hdl); |
| if (result == GSI_STATUS_SUCCESS) |
| break; |
| |
| if (result != -GSI_STATUS_AGAIN && |
| result != -GSI_STATUS_TIMED_OUT) |
| break; |
| } |
| |
| if (result != GSI_STATUS_SUCCESS) { |
| IPAERR("GSI stop chan err: %d.\n", result); |
| ipa_assert(); |
| return result; |
| } |
| result = ipa3_reset_gsi_channel(clnt_hdl); |
| if (result != GSI_STATUS_SUCCESS) { |
| IPAERR("Failed to reset chan: %d.\n", result); |
| ipa_assert(); |
| return result; |
| } |
| dma_free_coherent(ipa3_ctx->pdev, |
| ep->gsi_mem_info.chan_ring_len, |
| ep->gsi_mem_info.chan_ring_base_vaddr, |
| ep->gsi_mem_info.chan_ring_base_addr); |
| result = gsi_dealloc_channel(ep->gsi_chan_hdl); |
| if (result != GSI_STATUS_SUCCESS) { |
| IPAERR("Failed to dealloc chan: %d.\n", result); |
| ipa_assert(); |
| return result; |
| } |
| |
| /* free event ring only when it is present */ |
| if (ep->sys->use_comm_evt_ring) { |
| ipa3_ctx->gsi_evt_comm_ring_rem += |
| ep->gsi_mem_info.chan_ring_len; |
| } else if (ep->gsi_evt_ring_hdl != ~0) { |
| result = gsi_reset_evt_ring(ep->gsi_evt_ring_hdl); |
| if (result != GSI_STATUS_SUCCESS) { |
| IPAERR("Failed to reset evt ring: %d.\n", |
| result); |
| BUG(); |
| return result; |
| } |
| dma_free_coherent(ipa3_ctx->pdev, |
| ep->gsi_mem_info.evt_ring_len, |
| ep->gsi_mem_info.evt_ring_base_vaddr, |
| ep->gsi_mem_info.evt_ring_base_addr); |
| result = gsi_dealloc_evt_ring(ep->gsi_evt_ring_hdl); |
| if (result != GSI_STATUS_SUCCESS) { |
| IPAERR("Failed to dealloc evt ring: %d.\n", |
| result); |
| BUG(); |
| return result; |
| } |
| } |
| if (ep->sys->repl_wq) |
| flush_workqueue(ep->sys->repl_wq); |
| if (IPA_CLIENT_IS_CONS(ep->client)) |
| ipa3_cleanup_rx(ep->sys); |
| |
| if (!ep->skip_ep_cfg && IPA_CLIENT_IS_PROD(ep->client)) { |
| if (ipa3_ctx->modem_cfg_emb_pipe_flt && |
| ep->client == IPA_CLIENT_APPS_WAN_PROD) |
| IPADBG("modem cfg emb pipe flt\n"); |
| else |
| ipa3_delete_dflt_flt_rules(clnt_hdl); |
| } |
| |
| if (IPA_CLIENT_IS_WLAN_CONS(ep->client)) |
| atomic_dec(&ipa3_ctx->wc_memb.active_clnt_cnt); |
| |
| memset(&ep->wstats, 0, sizeof(struct ipa3_wlan_stats)); |
| |
| if (!atomic_read(&ipa3_ctx->wc_memb.active_clnt_cnt)) |
| ipa3_cleanup_wlan_rx_common_cache(); |
| |
| ep->valid = 0; |
| IPA_ACTIVE_CLIENTS_DEC_EP(ipa3_get_client_mapping(clnt_hdl)); |
| |
| IPADBG("client (ep: %d) disconnected\n", clnt_hdl); |
| |
| return 0; |
| } |
| |
| /** |
| * ipa3_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. |
| */ |
| static void ipa3_tx_comp_usr_notify_release(void *user1, int user2) |
| { |
| struct sk_buff *skb = (struct sk_buff *)user1; |
| int ep_idx = user2; |
| |
| IPADBG_LOW("skb=%p ep=%d\n", skb, ep_idx); |
| |
| IPA_STATS_INC_CNT(ipa3_ctx->stats.tx_pkts_compl); |
| |
| if (ipa3_ctx->ep[ep_idx].client_notify) |
| ipa3_ctx->ep[ep_idx].client_notify(ipa3_ctx->ep[ep_idx].priv, |
| IPA_WRITE_DONE, (unsigned long)skb); |
| else |
| dev_kfree_skb_any(skb); |
| } |
| |
| void ipa3_tx_cmd_comp(void *user1, int user2) |
| { |
| ipahal_destroy_imm_cmd(user1); |
| } |
| |
| /** |
| * ipa3_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 transport point-of-view the IPA driver will |
| * get notified by the supplied callback. |
| * |
| * Returns: 0 on success, negative on failure |
| */ |
| int ipa3_tx_dp(enum ipa_client_type dst, struct sk_buff *skb, |
| struct ipa_tx_meta *meta) |
| { |
| struct ipa3_desc *desc; |
| struct ipa3_desc _desc[3]; |
| int dst_ep_idx; |
| struct ipahal_imm_cmd_pyld *cmd_pyld = NULL; |
| struct ipa3_sys_context *sys; |
| int src_ep_idx; |
| int num_frags, f; |
| const struct ipa_gsi_ep_config *gsi_ep; |
| int data_idx; |
| |
| if (unlikely(!ipa3_ctx)) { |
| IPAERR("IPA3 driver was not initialized\n"); |
| return -EINVAL; |
| } |
| |
| if (skb->len == 0) { |
| IPAERR("packet size is 0\n"); |
| return -EINVAL; |
| } |
| |
| /* |
| * 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 = ipa3_get_ep_mapping(IPA_CLIENT_APPS_LAN_PROD); |
| if (-1 == src_ep_idx) { |
| IPAERR("Client %u is not mapped\n", |
| IPA_CLIENT_APPS_LAN_PROD); |
| goto fail_gen; |
| } |
| dst_ep_idx = ipa3_get_ep_mapping(dst); |
| } else { |
| src_ep_idx = ipa3_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 = ipa3_ctx->ep[src_ep_idx].sys; |
| |
| if (!sys->ep->valid) { |
| IPAERR("pipe not valid\n"); |
| goto fail_gen; |
| } |
| |
| num_frags = skb_shinfo(skb)->nr_frags; |
| /* |
| * make sure TLV FIFO supports the needed frags. |
| * 2 descriptors are needed for IP_PACKET_INIT and TAG_STATUS. |
| * 1 descriptor needed for the linear portion of skb. |
| */ |
| gsi_ep = ipa3_get_gsi_ep_info(ipa3_ctx->ep[src_ep_idx].client); |
| if (gsi_ep && (num_frags + 3 > gsi_ep->ipa_if_tlv)) { |
| if (skb_linearize(skb)) { |
| IPAERR("Failed to linear skb with %d frags\n", |
| num_frags); |
| goto fail_gen; |
| } |
| num_frags = 0; |
| } |
| if (num_frags) { |
| /* 1 desc for tag to resolve status out-of-order issue; |
| * 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 + 3), GFP_ATOMIC); |
| if (!desc) { |
| IPAERR("failed to alloc desc array\n"); |
| goto fail_gen; |
| } |
| } else { |
| memset(_desc, 0, 3 * sizeof(struct ipa3_desc)); |
| desc = &_desc[0]; |
| } |
| |
| if (dst_ep_idx != -1) { |
| /* SW data path */ |
| data_idx = 0; |
| if (sys->policy == IPA_POLICY_NOINTR_MODE) { |
| /* |
| * For non-interrupt mode channel (where there is no |
| * event ring) TAG STATUS are used for completion |
| * notification. IPA will generate a status packet with |
| * tag info as a result of the TAG STATUS command. |
| */ |
| desc[data_idx].is_tag_status = true; |
| data_idx++; |
| } |
| desc[data_idx].opcode = ipa3_ctx->pkt_init_imm_opcode; |
| desc[data_idx].dma_address_valid = true; |
| desc[data_idx].dma_address = ipa3_ctx->pkt_init_imm[dst_ep_idx]; |
| desc[data_idx].type = IPA_IMM_CMD_DESC; |
| desc[data_idx].callback = NULL; |
| data_idx++; |
| desc[data_idx].pyld = skb->data; |
| desc[data_idx].len = skb_headlen(skb); |
| desc[data_idx].type = IPA_DATA_DESC_SKB; |
| desc[data_idx].callback = ipa3_tx_comp_usr_notify_release; |
| desc[data_idx].user1 = skb; |
| desc[data_idx].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[data_idx].dma_address_valid = true; |
| desc[data_idx].dma_address = meta->dma_address; |
| } |
| data_idx++; |
| |
| for (f = 0; f < num_frags; f++) { |
| desc[data_idx + f].frag = &skb_shinfo(skb)->frags[f]; |
| desc[data_idx + f].type = IPA_DATA_DESC_SKB_PAGED; |
| desc[data_idx + f].len = |
| skb_frag_size(desc[data_idx + f].frag); |
| } |
| /* don't free skb till frag mappings are released */ |
| if (num_frags) { |
| desc[data_idx + f - 1].callback = desc[2].callback; |
| desc[data_idx + f - 1].user1 = desc[2].user1; |
| desc[data_idx + f - 1].user2 = desc[2].user2; |
| desc[data_idx - 1].callback = NULL; |
| } |
| |
| if (ipa3_send(sys, num_frags + data_idx, desc, true)) { |
| IPAERR("fail to send skb %p num_frags %u SWP\n", |
| skb, num_frags); |
| goto fail_send; |
| } |
| IPA_STATS_INC_CNT(ipa3_ctx->stats.tx_sw_pkts); |
| } else { |
| /* HW data path */ |
| data_idx = 0; |
| if (sys->policy == IPA_POLICY_NOINTR_MODE) { |
| /* |
| * For non-interrupt mode channel (where there is no |
| * event ring) TAG STATUS are used for completion |
| * notification. IPA will generate a status packet with |
| * tag info as a result of the TAG STATUS command. |
| */ |
| desc[data_idx].is_tag_status = true; |
| data_idx++; |
| } |
| desc[data_idx].pyld = skb->data; |
| desc[data_idx].len = skb_headlen(skb); |
| desc[data_idx].type = IPA_DATA_DESC_SKB; |
| desc[data_idx].callback = ipa3_tx_comp_usr_notify_release; |
| desc[data_idx].user1 = skb; |
| desc[data_idx].user2 = src_ep_idx; |
| |
| if (meta && meta->dma_address_valid) { |
| desc[data_idx].dma_address_valid = true; |
| desc[data_idx].dma_address = meta->dma_address; |
| } |
| if (num_frags == 0) { |
| if (ipa3_send(sys, data_idx + 1, desc, true)) { |
| IPAERR("fail to send skb %p HWP\n", skb); |
| goto fail_mem; |
| } |
| } else { |
| for (f = 0; f < num_frags; f++) { |
| desc[data_idx+f+1].frag = |
| &skb_shinfo(skb)->frags[f]; |
| desc[data_idx+f+1].type = |
| IPA_DATA_DESC_SKB_PAGED; |
| desc[data_idx+f+1].len = |
| skb_frag_size(desc[data_idx+f+1].frag); |
| } |
| /* don't free skb till frag mappings are released */ |
| desc[data_idx+f].callback = desc[data_idx].callback; |
| desc[data_idx+f].user1 = desc[data_idx].user1; |
| desc[data_idx+f].user2 = desc[data_idx].user2; |
| desc[data_idx].callback = NULL; |
| |
| if (ipa3_send(sys, num_frags + data_idx + 1, |
| desc, true)) { |
| IPAERR("fail to send skb %p num_frags %u HWP\n", |
| skb, num_frags); |
| goto fail_mem; |
| } |
| } |
| IPA_STATS_INC_CNT(ipa3_ctx->stats.tx_hw_pkts); |
| } |
| |
| if (num_frags) { |
| kfree(desc); |
| IPA_STATS_INC_CNT(ipa3_ctx->stats.tx_non_linear); |
| } |
| return 0; |
| |
| fail_send: |
| ipahal_destroy_imm_cmd(cmd_pyld); |
| fail_mem: |
| if (num_frags) |
| kfree(desc); |
| fail_gen: |
| return -EFAULT; |
| } |
| |
| static void ipa3_wq_handle_rx(struct work_struct *work) |
| { |
| struct ipa3_sys_context *sys; |
| |
| sys = container_of(work, struct ipa3_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 |
| ipa3_handle_rx(sys); |
| } |
| |
| static void ipa3_wq_repl_rx(struct work_struct *work) |
| { |
| struct ipa3_sys_context *sys; |
| void *ptr; |
| struct ipa3_rx_pkt_wrapper *rx_pkt; |
| gfp_t flag = GFP_KERNEL; |
| u32 next; |
| u32 curr; |
| |
| sys = container_of(work, struct ipa3_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(ipa3_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, ipa3_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(ipa3_ctx->pdev, ptr, |
| sys->rx_buff_sz, |
| DMA_FROM_DEVICE); |
| if (dma_mapping_error(ipa3_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(ipa3_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(ipa3_ctx->stats.wan_repl_rx_empty); |
| else if (sys->ep->client == IPA_CLIENT_APPS_LAN_CONS) |
| IPA_STATS_INC_CNT(ipa3_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 ipa3_replenish_wlan_rx_cache(struct ipa3_sys_context *sys) |
| { |
| struct ipa3_rx_pkt_wrapper *rx_pkt = NULL; |
| struct ipa3_rx_pkt_wrapper *tmp; |
| int ret; |
| struct gsi_xfer_elem gsi_xfer_elem_one; |
| u32 rx_len_cached = 0; |
| |
| IPADBG_LOW("\n"); |
| |
| spin_lock_bh(&ipa3_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, |
| &ipa3_ctx->wc_memb.wlan_comm_desc_list, link) { |
| list_del(&rx_pkt->link); |
| |
| if (ipa3_ctx->wc_memb.wlan_comm_free_cnt > 0) |
| ipa3_ctx->wc_memb.wlan_comm_free_cnt--; |
| |
| INIT_LIST_HEAD(&rx_pkt->link); |
| rx_pkt->len = 0; |
| rx_pkt->sys = sys; |
| |
| list_add_tail(&rx_pkt->link, &sys->head_desc_list); |
| memset(&gsi_xfer_elem_one, 0, |
| sizeof(gsi_xfer_elem_one)); |
| gsi_xfer_elem_one.addr = rx_pkt->data.dma_addr; |
| gsi_xfer_elem_one.len = IPA_WLAN_RX_BUFF_SZ; |
| gsi_xfer_elem_one.flags |= GSI_XFER_FLAG_EOT; |
| gsi_xfer_elem_one.flags |= GSI_XFER_FLAG_EOB; |
| gsi_xfer_elem_one.type = GSI_XFER_ELEM_DATA; |
| gsi_xfer_elem_one.xfer_user_data = rx_pkt; |
| |
| ret = gsi_queue_xfer(sys->ep->gsi_chan_hdl, 1, |
| &gsi_xfer_elem_one, true); |
| |
| if (ret) { |
| IPAERR("failed to provide buffer: %d\n", ret); |
| goto fail_provide_rx_buffer; |
| } |
| |
| rx_len_cached = ++sys->len; |
| |
| if (rx_len_cached >= sys->rx_pool_sz) { |
| spin_unlock_bh( |
| &ipa3_ctx->wc_memb.wlan_spinlock); |
| return; |
| } |
| } |
| } |
| spin_unlock_bh(&ipa3_ctx->wc_memb.wlan_spinlock); |
| |
| if (rx_len_cached < sys->rx_pool_sz && |
| ipa3_ctx->wc_memb.wlan_comm_total_cnt < |
| IPA_WLAN_COMM_RX_POOL_HIGH) { |
| ipa3_replenish_rx_cache(sys); |
| ipa3_ctx->wc_memb.wlan_comm_total_cnt += |
| (sys->rx_pool_sz - rx_len_cached); |
| } |
| |
| return; |
| |
| fail_provide_rx_buffer: |
| list_del(&rx_pkt->link); |
| spin_unlock_bh(&ipa3_ctx->wc_memb.wlan_spinlock); |
| } |
| |
| static void ipa3_cleanup_wlan_rx_common_cache(void) |
| { |
| struct ipa3_rx_pkt_wrapper *rx_pkt; |
| struct ipa3_rx_pkt_wrapper *tmp; |
| |
| spin_lock_bh(&ipa3_ctx->wc_memb.wlan_spinlock); |
| |
| list_for_each_entry_safe(rx_pkt, tmp, |
| &ipa3_ctx->wc_memb.wlan_comm_desc_list, link) { |
| list_del(&rx_pkt->link); |
| dma_unmap_single(ipa3_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(ipa3_ctx->rx_pkt_wrapper_cache, rx_pkt); |
| ipa3_ctx->wc_memb.wlan_comm_free_cnt--; |
| ipa3_ctx->wc_memb.wlan_comm_total_cnt--; |
| } |
| ipa3_ctx->wc_memb.total_tx_pkts_freed = 0; |
| |
| if (ipa3_ctx->wc_memb.wlan_comm_free_cnt != 0) |
| IPAERR("wlan comm buff free cnt: %d\n", |
| ipa3_ctx->wc_memb.wlan_comm_free_cnt); |
| |
| if (ipa3_ctx->wc_memb.wlan_comm_total_cnt != 0) |
| IPAERR("wlan comm buff total cnt: %d\n", |
| ipa3_ctx->wc_memb.wlan_comm_total_cnt); |
| |
| spin_unlock_bh(&ipa3_ctx->wc_memb.wlan_spinlock); |
| |
| } |
| |
| static void ipa3_alloc_wlan_rx_common_cache(u32 size) |
| { |
| void *ptr; |
| struct ipa3_rx_pkt_wrapper *rx_pkt; |
| int rx_len_cached = 0; |
| gfp_t flag = GFP_NOWAIT | __GFP_NOWARN; |
| |
| rx_len_cached = ipa3_ctx->wc_memb.wlan_comm_total_cnt; |
| while (rx_len_cached < size) { |
| rx_pkt = kmem_cache_zalloc(ipa3_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, ipa3_wq_rx_avail); |
| |
| rx_pkt->data.skb = |
| ipa3_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(ipa3_ctx->pdev, ptr, |
| IPA_WLAN_RX_BUFF_SZ, DMA_FROM_DEVICE); |
| if (dma_mapping_error(ipa3_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; |
| } |
| |
| spin_lock_bh(&ipa3_ctx->wc_memb.wlan_spinlock); |
| list_add_tail(&rx_pkt->link, |
| &ipa3_ctx->wc_memb.wlan_comm_desc_list); |
| rx_len_cached = ++ipa3_ctx->wc_memb.wlan_comm_total_cnt; |
| |
| ipa3_ctx->wc_memb.wlan_comm_free_cnt++; |
| spin_unlock_bh(&ipa3_ctx->wc_memb.wlan_spinlock); |
| |
| } |
| |
| return; |
| |
| fail_dma_mapping: |
| dev_kfree_skb_any(rx_pkt->data.skb); |
| fail_skb_alloc: |
| kmem_cache_free(ipa3_ctx->rx_pkt_wrapper_cache, rx_pkt); |
| fail_kmem_cache_alloc: |
| return; |
| } |
| |
| |
| /** |
| * ipa3_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 |
| */ |
| static void ipa3_replenish_rx_cache(struct ipa3_sys_context *sys) |
| { |
| void *ptr; |
| struct ipa3_rx_pkt_wrapper *rx_pkt; |
| int ret; |
| int rx_len_cached = 0; |
| struct gsi_xfer_elem gsi_xfer_elem_one; |
| gfp_t flag = GFP_NOWAIT | __GFP_NOWARN; |
| |
| rx_len_cached = sys->len; |
| |
| while (rx_len_cached < sys->rx_pool_sz) { |
| rx_pkt = kmem_cache_zalloc(ipa3_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, ipa3_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(ipa3_ctx->pdev, ptr, |
| sys->rx_buff_sz, |
| DMA_FROM_DEVICE); |
| if (dma_mapping_error(ipa3_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; |
| |
| memset(&gsi_xfer_elem_one, 0, |
| sizeof(gsi_xfer_elem_one)); |
| gsi_xfer_elem_one.addr = rx_pkt->data.dma_addr; |
| gsi_xfer_elem_one.len = sys->rx_buff_sz; |
| gsi_xfer_elem_one.flags |= GSI_XFER_FLAG_EOT; |
| gsi_xfer_elem_one.flags |= GSI_XFER_FLAG_EOB; |
| gsi_xfer_elem_one.type = GSI_XFER_ELEM_DATA; |
| gsi_xfer_elem_one.xfer_user_data = rx_pkt; |
| |
| ret = gsi_queue_xfer(sys->ep->gsi_chan_hdl, |
| 1, &gsi_xfer_elem_one, false); |
| if (ret != GSI_STATUS_SUCCESS) { |
| IPAERR("failed to provide buffer: %d\n", |
| ret); |
| goto fail_provide_rx_buffer; |
| } |
| |
| /* |
| * As doorbell is a costly operation, notify to GSI |
| * of new buffers if threshold is exceeded |
| */ |
| if (++sys->len_pending_xfer >= IPA_REPL_XFER_THRESH) { |
| sys->len_pending_xfer = 0; |
| gsi_start_xfer(sys->ep->gsi_chan_hdl); |
| } |
| } |
| |
| return; |
| |
| fail_provide_rx_buffer: |
| list_del(&rx_pkt->link); |
| rx_len_cached = --sys->len; |
| dma_unmap_single(ipa3_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(ipa3_ctx->rx_pkt_wrapper_cache, rx_pkt); |
| fail_kmem_cache_alloc: |
| if (rx_len_cached - sys->len_pending_xfer == 0) |
| queue_delayed_work(sys->wq, &sys->replenish_rx_work, |
| msecs_to_jiffies(1)); |
| } |
| |
| static void ipa3_replenish_rx_cache_recycle(struct ipa3_sys_context *sys) |
| { |
| void *ptr; |
| struct ipa3_rx_pkt_wrapper *rx_pkt; |
| int ret; |
| int rx_len_cached = 0; |
| struct gsi_xfer_elem gsi_xfer_elem_one; |
| gfp_t flag = GFP_NOWAIT | __GFP_NOWARN; |
| |
| rx_len_cached = sys->len; |
| |
| while (rx_len_cached < sys->rx_pool_sz) { |
| if (list_empty(&sys->rcycl_list)) { |
| rx_pkt = kmem_cache_zalloc( |
| ipa3_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, ipa3_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"); |
| kmem_cache_free(ipa3_ctx->rx_pkt_wrapper_cache, |
| rx_pkt); |
| goto fail_kmem_cache_alloc; |
| } |
| ptr = skb_put(rx_pkt->data.skb, sys->rx_buff_sz); |
| rx_pkt->data.dma_addr = dma_map_single(ipa3_ctx->pdev, |
| ptr, sys->rx_buff_sz, DMA_FROM_DEVICE); |
| if (dma_mapping_error(ipa3_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; |
| } |
| } else { |
| spin_lock_bh(&sys->spinlock); |
| rx_pkt = list_first_entry(&sys->rcycl_list, |
| struct ipa3_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(ipa3_ctx->pdev, |
| ptr, sys->rx_buff_sz, DMA_FROM_DEVICE); |
| if (dma_mapping_error(ipa3_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; |
| memset(&gsi_xfer_elem_one, 0, |
| sizeof(gsi_xfer_elem_one)); |
| gsi_xfer_elem_one.addr = rx_pkt->data.dma_addr; |
| gsi_xfer_elem_one.len = sys->rx_buff_sz; |
| gsi_xfer_elem_one.flags |= GSI_XFER_FLAG_EOT; |
| gsi_xfer_elem_one.flags |= GSI_XFER_FLAG_EOB; |
| gsi_xfer_elem_one.type = GSI_XFER_ELEM_DATA; |
| gsi_xfer_elem_one.xfer_user_data = rx_pkt; |
| |
| ret = gsi_queue_xfer(sys->ep->gsi_chan_hdl, |
| 1, &gsi_xfer_elem_one, false); |
| if (ret != GSI_STATUS_SUCCESS) { |
| IPAERR("failed to provide buffer: %d\n", |
| ret); |
| goto fail_provide_rx_buffer; |
| } |
| |
| /* |
| * As doorbell is a costly operation, notify to GSI |
| * of new buffers if threshold is exceeded |
| */ |
| if (++sys->len_pending_xfer >= IPA_REPL_XFER_THRESH) { |
| sys->len_pending_xfer = 0; |
| gsi_start_xfer(sys->ep->gsi_chan_hdl); |
| } |
| } |
| |
| return; |
| fail_provide_rx_buffer: |
| rx_len_cached = --sys->len; |
| list_del(&rx_pkt->link); |
| INIT_LIST_HEAD(&rx_pkt->link); |
| dma_unmap_single(ipa3_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: |
| if (rx_len_cached - sys->len_pending_xfer == 0) |
| queue_delayed_work(sys->wq, &sys->replenish_rx_work, |
| msecs_to_jiffies(1)); |
| } |
| |
| static void ipa3_fast_replenish_rx_cache(struct ipa3_sys_context *sys) |
| { |
| struct ipa3_rx_pkt_wrapper *rx_pkt; |
| int ret; |
| int rx_len_cached = 0; |
| struct gsi_xfer_elem gsi_xfer_elem_one; |
| u32 curr; |
| |
| spin_lock_bh(&sys->spinlock); |
| |
| 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)) |
| break; |
| |
| rx_pkt = sys->repl.cache[curr]; |
| list_add_tail(&rx_pkt->link, &sys->head_desc_list); |
| |
| memset(&gsi_xfer_elem_one, 0, |
| sizeof(gsi_xfer_elem_one)); |
| gsi_xfer_elem_one.addr = rx_pkt->data.dma_addr; |
| gsi_xfer_elem_one.len = sys->rx_buff_sz; |
| gsi_xfer_elem_one.flags |= GSI_XFER_FLAG_EOT; |
| gsi_xfer_elem_one.flags |= GSI_XFER_FLAG_EOB; |
| gsi_xfer_elem_one.type = GSI_XFER_ELEM_DATA; |
| gsi_xfer_elem_one.xfer_user_data = rx_pkt; |
| |
| ret = gsi_queue_xfer(sys->ep->gsi_chan_hdl, 1, |
| &gsi_xfer_elem_one, false); |
| if (ret != GSI_STATUS_SUCCESS) { |
| IPAERR("failed to provide buffer: %d\n", |
| ret); |
| break; |
| } |
| |
| /* |
| * As doorbell is a costly operation, notify to GSI |
| * of new buffers if threshold is exceeded |
| */ |
| if (++sys->len_pending_xfer >= IPA_REPL_XFER_THRESH) { |
| sys->len_pending_xfer = 0; |
| gsi_start_xfer(sys->ep->gsi_chan_hdl); |
| } |
| |
| rx_len_cached = ++sys->len; |
| curr = (curr + 1) % sys->repl.capacity; |
| /* ensure write is done before setting head index */ |
| mb(); |
| atomic_set(&sys->repl.head_idx, curr); |
| } |
| spin_unlock_bh(&sys->spinlock); |
| |
| queue_work(sys->repl_wq, &sys->repl_work); |
| |
| if (rx_len_cached - sys->len_pending_xfer |
| <= IPA_DEFAULT_SYS_YELLOW_WM) { |
| if (sys->ep->client == IPA_CLIENT_APPS_WAN_CONS) |
| IPA_STATS_INC_CNT(ipa3_ctx->stats.wan_rx_empty); |
| else if (sys->ep->client == IPA_CLIENT_APPS_LAN_CONS) |
| IPA_STATS_INC_CNT(ipa3_ctx->stats.lan_rx_empty); |
| else |
| WARN_ON(1); |
| queue_delayed_work(sys->wq, &sys->replenish_rx_work, |
| msecs_to_jiffies(1)); |
| } |
| } |
| |
| static void ipa3_replenish_rx_work_func(struct work_struct *work) |
| { |
| struct delayed_work *dwork; |
| struct ipa3_sys_context *sys; |
| |
| dwork = container_of(work, struct delayed_work, work); |
| sys = container_of(dwork, struct ipa3_sys_context, replenish_rx_work); |
| IPA_ACTIVE_CLIENTS_INC_SIMPLE(); |
| sys->repl_hdlr(sys); |
| IPA_ACTIVE_CLIENTS_DEC_SIMPLE(); |
| } |
| |
| /** |
| * ipa3_cleanup_rx() - release RX queue resources |
| * |
| */ |
| static void ipa3_cleanup_rx(struct ipa3_sys_context *sys) |
| { |
| struct ipa3_rx_pkt_wrapper *rx_pkt; |
| struct ipa3_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(ipa3_ctx->pdev, rx_pkt->data.dma_addr, |
| sys->rx_buff_sz, DMA_FROM_DEVICE); |
| sys->free_skb(rx_pkt->data.skb); |
| kmem_cache_free(ipa3_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(ipa3_ctx->pdev, rx_pkt->data.dma_addr, |
| sys->rx_buff_sz, DMA_FROM_DEVICE); |
| sys->free_skb(rx_pkt->data.skb); |
| kmem_cache_free(ipa3_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(ipa3_ctx->pdev, rx_pkt->data.dma_addr, |
| sys->rx_buff_sz, DMA_FROM_DEVICE); |
| sys->free_skb(rx_pkt->data.skb); |
| kmem_cache_free(ipa3_ctx->rx_pkt_wrapper_cache, rx_pkt); |
| head = (head + 1) % sys->repl.capacity; |
| } |
| kfree(sys->repl.cache); |
| } |
| } |
| |
| static struct sk_buff *ipa3_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 ipa3_lan_rx_pyld_hdlr(struct sk_buff *skb, |
| struct ipa3_sys_context *sys) |
| { |
| int rc = 0; |
| struct ipahal_pkt_status status; |
| u32 pkt_status_sz; |
| 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; |
| struct ipa3_tx_pkt_wrapper *tx_pkt = NULL; |
| unsigned long ptr; |
| |
| IPA_DUMP_BUFF(skb->data, 0, skb->len); |
| |
| if (skb->len == 0) { |
| IPAERR("ZLT\n"); |
| return rc; |
| } |
| |
| if (sys->len_partial) { |
| IPADBG_LOW("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_LOW("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; |
| return rc; |
| } |
| } |
| |
| begin: |
| pkt_status_sz = ipahal_pkt_status_get_size(); |
| while (skb->len) { |
| sys->drop_packet = false; |
| IPADBG_LOW("LEN_REM %d\n", skb->len); |
| |
| if (skb->len < pkt_status_sz) { |
| WARN_ON(sys->prev_skb != NULL); |
| IPADBG_LOW("status straddles buffer\n"); |
| sys->prev_skb = skb_copy(skb, GFP_KERNEL); |
| sys->len_partial = skb->len; |
| return rc; |
| } |
| |
| ipahal_pkt_status_parse(skb->data, &status); |
| IPADBG_LOW("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 != |
| IPAHAL_PKT_STATUS_OPCODE_DROPPED_PACKET) && |
| (status.status_opcode != |
| IPAHAL_PKT_STATUS_OPCODE_PACKET) && |
| (status.status_opcode != |
| IPAHAL_PKT_STATUS_OPCODE_SUSPENDED_PACKET) && |
| (status.status_opcode != |
| IPAHAL_PKT_STATUS_OPCODE_PACKET_2ND_PASS)) { |
| IPAERR("unsupported opcode(%d)\n", |
| status.status_opcode); |
| skb_pull(skb, pkt_status_sz); |
| continue; |
| } |
| IPA_STATS_EXCP_CNT(status.exception, |
| ipa3_ctx->stats.rx_excp_pkts); |
| if (status.endp_dest_idx >= ipa3_ctx->ipa_num_pipes || |
| status.endp_src_idx >= ipa3_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 (IPAHAL_PKT_STATUS_MASK_FLAG_VAL( |
| IPAHAL_PKT_STATUS_MASK_TAG_VALID_SHFT, &status)) { |
| struct ipa3_tag_completion *comp; |
| |
| IPADBG_LOW("TAG packet arrived\n"); |
| if (status.tag_info == IPA_COOKIE) { |
| skb_pull(skb, pkt_status_sz); |
| 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 { |
| ptr = tag_to_pointer_wa(status.tag_info); |
| tx_pkt = (struct ipa3_tx_pkt_wrapper *)ptr; |
| IPADBG_LOW("tx_pkt recv = %p\n", tx_pkt); |
| } |
| } |
| if (status.pkt_len == 0) { |
| IPADBG_LOW("Skip aggr close status\n"); |
| skb_pull(skb, pkt_status_sz); |
| IPA_STATS_INC_CNT(ipa3_ctx->stats.aggr_close); |
| IPA_STATS_DEC_CNT(ipa3_ctx->stats.rx_excp_pkts |
| [IPAHAL_PKT_STATUS_EXCEPTION_NONE]); |
| continue; |
| } |
| |
| if (status.endp_dest_idx == (sys->ep - ipa3_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 == |
| IPAHAL_PKT_STATUS_EXCEPTION_NONE && |
| ipahal_is_rule_miss_id(status.rt_rule_id)) |
| sys->drop_packet = true; |
| |
| if (skb->len == pkt_status_sz && |
| status.exception == |
| IPAHAL_PKT_STATUS_EXCEPTION_NONE) { |
| WARN_ON(sys->prev_skb != NULL); |
| IPADBG_LOW("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_LOW("pad %d pkt_len %d len %d\n", pad_len_byte, |
| status.pkt_len, len); |
| |
| if (status.exception == |
| IPAHAL_PKT_STATUS_EXCEPTION_DEAGGR) { |
| IPADBG_LOW( |
| "Dropping packet on DeAggr Exception\n"); |
| sys->drop_packet = true; |
| } |
| |
| skb2 = ipa3_skb_copy_for_client(skb, |
| min(status.pkt_len + pkt_status_sz, skb->len)); |
| if (likely(skb2)) { |
| if (skb->len < len + pkt_status_sz) { |
| IPADBG_LOW("SPL skb len %d len %d\n", |
| skb->len, len); |
| sys->prev_skb = skb2; |
| sys->len_rem = len - skb->len + |
| pkt_status_sz; |
| sys->len_pad = pad_len_byte; |
| skb_pull(skb, skb->len); |
| } else { |
| skb_trim(skb2, status.pkt_len + |
| pkt_status_sz); |
| IPADBG_LOW("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 + |
| pkt_status_sz, 32) * |
| unused / used_align); |
| sys->ep->client_notify( |
| sys->ep->priv, |
| IPA_RECEIVE, |
| (unsigned long)(skb2)); |
| } |
| skb_pull(skb, len + pkt_status_sz); |
| } |
| } else { |
| IPAERR("fail to alloc skb\n"); |
| if (skb->len < len) { |
| sys->prev_skb = NULL; |
| sys->len_rem = len - skb->len + |
| pkt_status_sz; |
| sys->len_pad = pad_len_byte; |
| skb_pull(skb, skb->len); |
| } else { |
| skb_pull(skb, len + pkt_status_sz); |
| } |
| } |
| /* TX comp */ |
| ipa3_wq_write_done_status(src_pipe, tx_pkt); |
| IPADBG_LOW("tx comp imp for %d\n", src_pipe); |
| } else { |
| /* TX comp */ |
| ipa3_wq_write_done_status(status.endp_src_idx, tx_pkt); |
| IPADBG_LOW("tx comp exp for %d\n", |
| status.endp_src_idx); |
| skb_pull(skb, pkt_status_sz); |
| IPA_STATS_INC_CNT(ipa3_ctx->stats.stat_compl); |
| IPA_STATS_DEC_CNT(ipa3_ctx->stats.rx_excp_pkts |
| [IPAHAL_PKT_STATUS_EXCEPTION_NONE]); |
| } |
| }; |
| |
| return rc; |
| } |
| |
| static struct sk_buff *ipa3_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 ipa3_wan_rx_handle_splt_pyld(struct sk_buff *skb, |
| struct ipa3_sys_context *sys) |
| { |
| struct sk_buff *skb2; |
| |
| IPADBG_LOW("rem %d skb %d\n", sys->len_rem, skb->len); |
| if (sys->len_rem <= skb->len) { |
| if (sys->prev_skb) { |
| skb2 = ipa3_join_prev_skb(sys->prev_skb, skb, |
| sys->len_rem); |
| if (likely(skb2)) { |
| IPADBG_LOW( |
| "removing Status element from skb and sending to WAN client"); |
| skb_pull(skb2, ipahal_pkt_status_get_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 = ipa3_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 ipa3_wan_rx_pyld_hdlr(struct sk_buff *skb, |
| struct ipa3_sys_context *sys) |
| { |
| int rc = 0; |
| struct ipahal_pkt_status status; |
| unsigned char *skb_data; |
| u32 pkt_status_sz; |
| 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 (ipa3_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 == ipa3_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) |
| ipa3_wan_rx_handle_splt_pyld(skb, sys); |
| |
| pkt_status_sz = ipahal_pkt_status_get_size(); |
| while (skb->len) { |
| IPADBG_LOW("LEN_REM %d\n", skb->len); |
| if (skb->len < pkt_status_sz) { |
| IPAERR("status straddles buffer\n"); |
| WARN_ON(1); |
| goto bail; |
| } |
| ipahal_pkt_status_parse(skb->data, &status); |
| skb_data = skb->data; |
| IPADBG_LOW("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 != |
| IPAHAL_PKT_STATUS_OPCODE_DROPPED_PACKET) && |
| (status.status_opcode != |
| IPAHAL_PKT_STATUS_OPCODE_PACKET) && |
| (status.status_opcode != |
| IPAHAL_PKT_STATUS_OPCODE_PACKET_2ND_PASS)) { |
| IPAERR("unsupported opcode(%d)\n", |
| status.status_opcode); |
| skb_pull(skb, pkt_status_sz); |
| continue; |
| } |
| |
| IPA_STATS_INC_CNT(ipa3_ctx->stats.rx_pkts); |
| if (status.endp_dest_idx >= ipa3_ctx->ipa_num_pipes || |
| status.endp_src_idx >= ipa3_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_LOW("Skip aggr close status\n"); |
| skb_pull(skb, pkt_status_sz); |
| IPA_STATS_DEC_CNT(ipa3_ctx->stats.rx_pkts); |
| IPA_STATS_INC_CNT(ipa3_ctx->stats.wan_aggr_close); |
| continue; |
| } |
| ep_idx = ipa3_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 == pkt_status_sz) { |
| IPAERR("Ins header in next buffer\n"); |
| WARN_ON(1); |
| goto bail; |
| } |
| qmap_hdr = *(u32 *)(skb_data + pkt_status_sz); |
| /* |
| * 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_LOW("pkt_len with pad %d\n", pkt_len_with_pad); |
| /*get the CHECKSUM_PROCESS bit*/ |
| checksum_trailer_exists = IPAHAL_PKT_STATUS_MASK_FLAG_VAL( |
| IPAHAL_PKT_STATUS_MASK_CKSUM_PROCESS_SHFT, &status); |
| IPADBG_LOW("checksum_trailer_exists %d\n", |
| checksum_trailer_exists); |
| |
| frame_len = pkt_status_sz + IPA_QMAP_HEADER_LENGTH + |
| pkt_len_with_pad; |
| if (checksum_trailer_exists) |
| frame_len += IPA_DL_CHECKSUM_LENGTH; |
| IPADBG_LOW("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_LOW("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_LOW("rx avail for %d\n", |
| status.endp_dest_idx); |
| IPADBG_LOW( |
| "removing Status element from skb and sending to WAN client"); |
| skb_pull(skb2, pkt_status_sz); |
| 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 struct sk_buff *ipa3_get_skb_ipa_rx(unsigned int len, gfp_t flags) |
| { |
| return __dev_alloc_skb(len, flags); |
| } |
| |
| static void ipa3_free_skb_rx(struct sk_buff *skb) |
| { |
| dev_kfree_skb_any(skb); |
| } |
| |
| void ipa3_lan_rx_cb(void *priv, enum ipa_dp_evt_type evt, unsigned long data) |
| { |
| struct sk_buff *rx_skb = (struct sk_buff *)data; |
| struct ipahal_pkt_status status; |
| struct ipa3_ep_context *ep; |
| unsigned int src_pipe; |
| u32 metadata; |
| |
| ipahal_pkt_status_parse(rx_skb->data, &status); |
| src_pipe = status.endp_src_idx; |
| metadata = status.metadata; |
| ep = &ipa3_ctx->ep[src_pipe]; |
| if (unlikely(src_pipe >= ipa3_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 == IPAHAL_PKT_STATUS_EXCEPTION_NONE) |
| skb_pull(rx_skb, ipahal_pkt_status_get_size() + |
| IPA_LAN_RX_HEADER_LENGTH); |
| else |
| skb_pull(rx_skb, ipahal_pkt_status_get_size()); |
| |
| /* Metadata Info |
| * ------------------------------------------ |
| * | 3 | 2 | 1 | 0 | |
| * | fw_desc | vdev_id | qmap mux id | Resv | |
| * ------------------------------------------ |
| */ |
| *(u16 *)rx_skb->cb = ((metadata >> 16) & 0xFFFF); |
| IPADBG_LOW("meta_data: 0x%x cb: 0x%x\n", |
| metadata, *(u32 *)rx_skb->cb); |
| |
| ep->client_notify(ep->priv, IPA_RECEIVE, (unsigned long)(rx_skb)); |
| } |
| |
| static void ipa3_recycle_rx_wrapper(struct ipa3_rx_pkt_wrapper *rx_pkt) |
| { |
| rx_pkt->data.dma_addr = 0; |
| ipa3_skb_recycle(rx_pkt->data.skb); |
| 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); |
| } |
| |
| void ipa3_recycle_wan_skb(struct sk_buff *skb) |
| { |
| struct ipa3_rx_pkt_wrapper *rx_pkt; |
| int ep_idx = ipa3_get_ep_mapping( |
| IPA_CLIENT_APPS_WAN_CONS); |
| gfp_t flag = GFP_NOWAIT | __GFP_NOWARN; |
| |
| if (unlikely(ep_idx == -1)) { |
| IPAERR("dest EP does not exist\n"); |
| ipa_assert(); |
| } |
| |
| rx_pkt = kmem_cache_zalloc(ipa3_ctx->rx_pkt_wrapper_cache, |
| flag); |
| if (!rx_pkt) |
| ipa_assert(); |
| |
| INIT_WORK(&rx_pkt->work, ipa3_wq_rx_avail); |
| rx_pkt->sys = ipa3_ctx->ep[ep_idx].sys; |
| |
| rx_pkt->data.skb = skb; |
| ipa3_recycle_rx_wrapper(rx_pkt); |
| } |
| |
| static void ipa3_wq_rx_common(struct ipa3_sys_context *sys, u32 size) |
| { |
| struct ipa3_rx_pkt_wrapper *rx_pkt_expected; |
| struct sk_buff *rx_skb; |
| |
| if (unlikely(list_empty(&sys->head_desc_list))) { |
| WARN_ON(1); |
| return; |
| } |
| spin_lock_bh(&sys->spinlock); |
| rx_pkt_expected = list_first_entry(&sys->head_desc_list, |
| struct ipa3_rx_pkt_wrapper, |
| link); |
| list_del(&rx_pkt_expected->link); |
| sys->len--; |
| if (size) |
| rx_pkt_expected->len = size; |
| spin_unlock_bh(&sys->spinlock); |
| rx_skb = rx_pkt_expected->data.skb; |
| dma_unmap_single(ipa3_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->free_rx_wrapper(rx_pkt_expected); |
| sys->repl_hdlr(sys); |
| } |
| |
| static void ipa3_wlan_wq_rx_common(struct ipa3_sys_context *sys, u32 size) |
| { |
| struct ipa3_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 ipa3_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) { |
| ipa3_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)); |
| } |
| ipa3_replenish_wlan_rx_cache(sys); |
| } |
| |
| static void ipa3_dma_memcpy_notify(struct ipa3_sys_context *sys, |
| struct ipa_mem_buffer *mem_info) |
| { |
| IPADBG_LOW("ENTER.\n"); |
| if (unlikely(list_empty(&sys->head_desc_list))) { |
| IPAERR("descriptor list is empty!\n"); |
| WARN_ON(1); |
| return; |
| } |
| sys->ep->client_notify(sys->ep->priv, IPA_RECEIVE, |
| (unsigned long)(mem_info)); |
| IPADBG_LOW("EXIT\n"); |
| } |
| |
| static void ipa3_wq_rx_avail(struct work_struct *work) |
| { |
| struct ipa3_rx_pkt_wrapper *rx_pkt; |
| struct ipa3_sys_context *sys; |
| |
| rx_pkt = container_of(work, struct ipa3_rx_pkt_wrapper, work); |
| if (unlikely(rx_pkt == NULL)) |
| WARN_ON(1); |
| sys = rx_pkt->sys; |
| ipa3_wq_rx_common(sys, 0); |
| } |
| |
| static int ipa3_odu_rx_pyld_hdlr(struct sk_buff *rx_skb, |
| struct ipa3_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 void ipa3_free_rx_wrapper(struct ipa3_rx_pkt_wrapper *rk_pkt) |
| { |
| kmem_cache_free(ipa3_ctx->rx_pkt_wrapper_cache, rk_pkt); |
| } |
| |
| static int ipa3_assign_policy(struct ipa_sys_connect_params *in, |
| struct ipa3_sys_context *sys) |
| { |
| if (in->client == IPA_CLIENT_APPS_CMD_PROD) { |
| sys->policy = IPA_POLICY_INTR_MODE; |
| sys->use_comm_evt_ring = false; |
| return 0; |
| } |
| |
| if (IPA_CLIENT_IS_MEMCPY_DMA_PROD(in->client)) { |
| sys->policy = IPA_POLICY_NOINTR_MODE; |
| return 0; |
| } |
| |
| if (IPA_CLIENT_IS_PROD(in->client)) { |
| if (sys->ep->skip_ep_cfg) { |
| sys->policy = IPA_POLICY_INTR_POLL_MODE; |
| sys->use_comm_evt_ring = true; |
| atomic_set(&sys->curr_polling_state, 0); |
| } else { |
| sys->policy = IPA_POLICY_INTR_MODE; |
| sys->use_comm_evt_ring = true; |
| INIT_WORK(&sys->work, ipa3_send_nop_desc); |
| } |
| } else { |
| if (in->client == IPA_CLIENT_APPS_LAN_CONS || |
| in->client == IPA_CLIENT_APPS_WAN_CONS) { |
| sys->ep->status.status_en = true; |
| sys->policy = IPA_POLICY_INTR_POLL_MODE; |
| INIT_WORK(&sys->work, ipa3_wq_handle_rx); |
| INIT_DELAYED_WORK(&sys->switch_to_intr_work, |
| ipa3_switch_to_intr_rx_work_func); |
| INIT_DELAYED_WORK(&sys->replenish_rx_work, |
| ipa3_replenish_rx_work_func); |
| INIT_WORK(&sys->repl_work, ipa3_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); |
| sys->get_skb = ipa3_get_skb_ipa_rx; |
| sys->free_skb = ipa3_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 = ipa3_lan_rx_pyld_hdlr; |
| sys->repl_hdlr = |
| ipa3_replenish_rx_cache_recycle; |
| sys->free_rx_wrapper = |
| ipa3_recycle_rx_wrapper; |
| sys->rx_pool_sz = |
| ipa3_ctx->lan_rx_ring_size; |
| 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 (in->client == |
| IPA_CLIENT_APPS_WAN_CONS) { |
| sys->pyld_hdlr = ipa3_wan_rx_pyld_hdlr; |
| sys->free_rx_wrapper = ipa3_free_rx_wrapper; |
| sys->rx_pool_sz = ipa3_ctx->wan_rx_ring_size; |
| if (nr_cpu_ids > 1) { |
| sys->repl_hdlr = |
| ipa3_fast_replenish_rx_cache; |
| } else { |
| sys->repl_hdlr = |
| ipa3_replenish_rx_cache; |
| } |
| if (in->napi_enabled && in->recycle_enabled) |
| sys->repl_hdlr = |
| ipa3_replenish_rx_cache_recycle; |
| in->ipa_ep_cfg.aggr.aggr_sw_eof_active |
| = true; |
| if (ipa3_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", |
| (unsigned long int) |
| IPA_GENERIC_RX_BUFF_SZ( |
| ipa_adjust_ra_buff_base_sz( |
| in->ipa_ep_cfg. |
| aggr.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)); |
| 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->policy = IPA_POLICY_INTR_POLL_MODE; |
| INIT_WORK(&sys->work, ipa3_wq_handle_rx); |
| INIT_DELAYED_WORK(&sys->switch_to_intr_work, |
| ipa3_switch_to_intr_rx_work_func); |
| INIT_DELAYED_WORK(&sys->replenish_rx_work, |
| ipa3_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 / |
| IPA_FIFO_ELEMENT_SIZE - 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 = ipa3_replenish_wlan_rx_cache; |
| sys->get_skb = ipa3_get_skb_ipa_rx; |
| sys->free_skb = ipa3_free_skb_rx; |
| sys->free_rx_wrapper = ipa3_free_rx_wrapper; |
| in->ipa_ep_cfg.aggr.aggr_en = IPA_BYPASS_AGGR; |
| } else if (IPA_CLIENT_IS_ODU_CONS(in->client)) { |
| IPADBG("assigning policy to client:%d", |
| in->client); |
| |
| sys->policy = IPA_POLICY_INTR_POLL_MODE; |
| INIT_WORK(&sys->work, ipa3_wq_handle_rx); |
| INIT_DELAYED_WORK(&sys->switch_to_intr_work, |
| ipa3_switch_to_intr_rx_work_func); |
| INIT_DELAYED_WORK(&sys->replenish_rx_work, |
| ipa3_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 / |
| IPA_FIFO_ELEMENT_SIZE - 1; |
| if (sys->rx_pool_sz > IPA_ODU_RX_POOL_SZ) |
| sys->rx_pool_sz = IPA_ODU_RX_POOL_SZ; |
| sys->pyld_hdlr = ipa3_odu_rx_pyld_hdlr; |
| sys->get_skb = ipa3_get_skb_ipa_rx; |
| sys->free_skb = ipa3_free_skb_rx; |
| sys->free_rx_wrapper = ipa3_free_rx_wrapper; |
| sys->repl_hdlr = ipa3_replenish_rx_cache; |
| } else if (in->client == |
| IPA_CLIENT_MEMCPY_DMA_ASYNC_CONS) { |
| IPADBG("assigning policy to client:%d", |
| in->client); |
| |
| sys->policy = IPA_POLICY_INTR_POLL_MODE; |
| INIT_WORK(&sys->work, ipa3_wq_handle_rx); |
| INIT_DELAYED_WORK(&sys->switch_to_intr_work, |
| ipa3_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->policy = IPA_POLICY_NOINTR_MODE; |
| } else { |
| IPAERR("Need to install a RX pipe hdlr\n"); |
| WARN_ON(1); |
| return -EINVAL; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ipa3_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 ipa3_tx_dp_mul |
| */ |
| static void ipa3_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_LOW("Received data desc anchor:%p\n", dd); |
| |
| atomic_inc(&ipa3_ctx->ep[ep_idx].avail_fifo_desc); |
| ipa3_ctx->ep[ep_idx].wstats.rx_pkts_status_rcvd++; |
| |
| /* wlan host driver waits till tx complete before unload */ |
| IPADBG_LOW("ep=%d fifo_desc_free_count=%d\n", |
| ep_idx, atomic_read(&ipa3_ctx->ep[ep_idx].avail_fifo_desc)); |
| IPADBG_LOW("calling client notify callback with priv:%p\n", |
| ipa3_ctx->ep[ep_idx].priv); |
| |
| if (ipa3_ctx->ep[ep_idx].client_notify) { |
| ipa3_ctx->ep[ep_idx].client_notify(ipa3_ctx->ep[ep_idx].priv, |
| IPA_WRITE_DONE, (unsigned long)user1); |
| ipa3_ctx->ep[ep_idx].wstats.rx_hd_reply++; |
| } |
| } |
| /** |
| * ipa3_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 ipa3_tx_dp_mul |
| */ |
| static void ipa3_tx_client_rx_pkt_status(void *user1, int user2) |
| { |
| int ep_idx = user2; |
| |
| atomic_inc(&ipa3_ctx->ep[ep_idx].avail_fifo_desc); |
| ipa3_ctx->ep[ep_idx].wstats.rx_pkts_status_rcvd++; |
| } |
| |
| |
| /** |
| * ipa3_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). Will set EOT flag for last descriptor Once this send was done |
| * from transport point-of-view the IPA driver will get notified by the |
| * supplied callback - ipa_gsi_irq_tx_notify_cb() |
| * |
| * ipa_gsi_irq_tx_notify_cb will call to the user supplied callback |
| * |
| * Returns: 0 on success, negative on failure |
| */ |
| int ipa3_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 ipa3_sys_context *sys; |
| struct ipa3_desc desc[2]; |
| u32 num_desc, cnt; |
| int ep_idx; |
| |
| IPADBG_LOW("Received data desc anchor:%p\n", data_desc); |
| |
| spin_lock_bh(&ipa3_ctx->wc_memb.ipa_tx_mul_spinlock); |
| |
| ep_idx = ipa3_get_ep_mapping(src); |
| if (unlikely(ep_idx == -1)) { |
| IPAERR("dest EP does not exist.\n"); |
| goto fail_send; |
| } |
| IPADBG_LOW("ep idx:%d\n", ep_idx); |
| sys = ipa3_ctx->ep[ep_idx].sys; |
| |
| if (unlikely(ipa3_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_LOW("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) { |
| memset(desc, 0, 2 * sizeof(struct ipa3_desc)); |
| |
| IPADBG_LOW("Parsing data desc :%d\n", cnt); |
| cnt++; |
| ((u8 *)entry->pyld_buffer)[IPA_WLAN_HDR_QMAP_ID_OFFSET] = |
| (u8)sys->ep->cfg.meta.qmap_id; |
| |
| /* the tag field will be populated in ipa3_send() function */ |
| desc[0].is_tag_status = true; |
| desc[1].pyld = entry->pyld_buffer; |
| desc[1].len = entry->pyld_len; |
| desc[1].type = IPA_DATA_DESC_SKB; |
| desc[1].user1 = data_desc; |
| desc[1].user2 = ep_idx; |
| IPADBG_LOW("priv:%p pyld_buf:0x%p pyld_len:%d\n", |
| entry->priv, desc[1].pyld, desc[1].len); |
| |
| /* In case of last descriptor populate callback */ |
| if (cnt == num_desc) { |
| IPADBG_LOW("data desc:%p\n", data_desc); |
| desc[1].callback = ipa3_tx_client_rx_notify_release; |
| } else { |
| desc[1].callback = ipa3_tx_client_rx_pkt_status; |
| } |
| |
| IPADBG_LOW("calling ipa3_send_one()\n"); |
| if (ipa3_send(sys, 2, 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_LOW("ep=%d fifo desc=%d\n", |
| ep_idx, atomic_read(&sys->ep->avail_fifo_desc)); |
| } |
| |
| sys->ep->wstats.rx_hd_processed++; |
| spin_unlock_bh(&ipa3_ctx->wc_memb.ipa_tx_mul_spinlock); |
| return 0; |
| |
| fail_send: |
| spin_unlock_bh(&ipa3_ctx->wc_memb.ipa_tx_mul_spinlock); |
| return -EFAULT; |
| |
| } |
| |
| void ipa3_free_skb(struct ipa_rx_data *data) |
| { |
| struct ipa3_rx_pkt_wrapper *rx_pkt; |
| |
| spin_lock_bh(&ipa3_ctx->wc_memb.wlan_spinlock); |
| |
| ipa3_ctx->wc_memb.total_tx_pkts_freed++; |
| rx_pkt = container_of(data, struct ipa3_rx_pkt_wrapper, data); |
| |
| ipa3_skb_recycle(rx_pkt->data.skb); |
| (void)skb_put(rx_pkt->data.skb, IPA_WLAN_RX_BUFF_SZ); |
| |
| list_add_tail(&rx_pkt->link, |
| &ipa3_ctx->wc_memb.wlan_comm_desc_list); |
| ipa3_ctx->wc_memb.wlan_comm_free_cnt++; |
| |
| spin_unlock_bh(&ipa3_ctx->wc_memb.wlan_spinlock); |
| } |
| |
| /* Functions added to support kernel tests */ |
| |
| int ipa3_sys_setup(struct ipa_sys_connect_params *sys_in, |
| unsigned long *ipa_transport_hdl, |
| u32 *ipa_pipe_num, u32 *clnt_hdl, bool en_status) |
| { |
| struct ipa3_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_transport_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 = ipa3_get_ep_mapping(sys_in->client); |
| if (ipa_ep_idx == -1) { |
| IPAERR("Invalid client :%d\n", sys_in->client); |
| goto fail_gen; |
| } |
| |
| ep = &ipa3_ctx->ep[ipa_ep_idx]; |
| IPA_ACTIVE_CLIENTS_INC_EP(sys_in->client); |
| |
| if (ep->valid == 1) { |
| if (sys_in->client != IPA_CLIENT_APPS_WAN_PROD) { |
| IPAERR("EP %d already allocated\n", ipa_ep_idx); |
| goto fail_and_disable_clocks; |
| } else { |
| if (ipa3_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 (ipa3_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 ipa3_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; |
| if (en_status) { |
| ep->status.status_en = true; |
| ep->status.status_ep = ipa_ep_idx; |
| } |
| |
| result = ipa3_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 (ipa3_cfg_ep(ipa_ep_idx, &sys_in->ipa_ep_cfg)) { |
| IPAERR("fail to configure EP.\n"); |
| goto fail_gen2; |
| } |
| if (ipa3_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_transport_hdl = ipa3_ctx->gsi_dev_hdl; |
| |
| if (!ep->keep_ipa_awake) |
| IPA_ACTIVE_CLIENTS_DEC_EP(sys_in->client); |
| |
| ipa3_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 ipa3_sys_teardown(u32 clnt_hdl) |
| { |
| struct ipa3_ep_context *ep; |
| |
| if (clnt_hdl >= ipa3_ctx->ipa_num_pipes || |
| ipa3_ctx->ep[clnt_hdl].valid == 0) { |
| IPAERR("bad parm(Either endpoint or client hdl invalid)\n"); |
| return -EINVAL; |
| } |
| |
| ep = &ipa3_ctx->ep[clnt_hdl]; |
| |
| if (!ep->keep_ipa_awake) |
| IPA_ACTIVE_CLIENTS_INC_EP(ipa3_get_client_mapping(clnt_hdl)); |
| |
| ipa3_disable_data_path(clnt_hdl); |
| ep->valid = 0; |
| |
| IPA_ACTIVE_CLIENTS_DEC_EP(ipa3_get_client_mapping(clnt_hdl)); |
| |
| IPADBG("client (ep: %d) disconnected\n", clnt_hdl); |
| |
| return 0; |
| } |
| |
| int ipa3_sys_update_gsi_hdls(u32 clnt_hdl, unsigned long gsi_ch_hdl, |
| unsigned long gsi_ev_hdl) |
| { |
| struct ipa3_ep_context *ep; |
| |
| if (clnt_hdl >= ipa3_ctx->ipa_num_pipes || |
| ipa3_ctx->ep[clnt_hdl].valid == 0) { |
| IPAERR("bad parm(Either endpoint or client hdl invalid)\n"); |
| return -EINVAL; |
| } |
| |
| ep = &ipa3_ctx->ep[clnt_hdl]; |
| |
| ep->gsi_chan_hdl = gsi_ch_hdl; |
| ep->gsi_evt_ring_hdl = gsi_ev_hdl; |
| |
| return 0; |
| } |
| |
| static void ipa_gsi_evt_ring_err_cb(struct gsi_evt_err_notify *notify) |
| { |
| switch (notify->evt_id) { |
| case GSI_EVT_OUT_OF_BUFFERS_ERR: |
| IPAERR("Got GSI_EVT_OUT_OF_BUFFERS_ERR\n"); |
| break; |
| case GSI_EVT_OUT_OF_RESOURCES_ERR: |
| IPAERR("Got GSI_EVT_OUT_OF_RESOURCES_ERR\n"); |
| break; |
| case GSI_EVT_UNSUPPORTED_INTER_EE_OP_ERR: |
| IPAERR("Got GSI_EVT_UNSUPPORTED_INTER_EE_OP_ERR\n"); |
| break; |
| case GSI_EVT_EVT_RING_EMPTY_ERR: |
| IPAERR("Got GSI_EVT_EVT_RING_EMPTY_ERR\n"); |
| break; |
| default: |
| IPAERR("Unexpected err evt: %d\n", notify->evt_id); |
| } |
| } |
| |
| static void ipa_gsi_chan_err_cb(struct gsi_chan_err_notify *notify) |
| { |
| switch (notify->evt_id) { |
| case GSI_CHAN_INVALID_TRE_ERR: |
| IPAERR("Got GSI_CHAN_INVALID_TRE_ERR\n"); |
| break; |
| case GSI_CHAN_NON_ALLOCATED_EVT_ACCESS_ERR: |
| IPAERR("Got GSI_CHAN_NON_ALLOCATED_EVT_ACCESS_ERR\n"); |
| break; |
| case GSI_CHAN_OUT_OF_BUFFERS_ERR: |
| IPAERR("Got GSI_CHAN_OUT_OF_BUFFERS_ERR\n"); |
| break; |
| case GSI_CHAN_OUT_OF_RESOURCES_ERR: |
| IPAERR("Got GSI_CHAN_OUT_OF_RESOURCES_ERR\n"); |
| break; |
| case GSI_CHAN_UNSUPPORTED_INTER_EE_OP_ERR: |
| IPAERR("Got GSI_CHAN_UNSUPPORTED_INTER_EE_OP_ERR\n"); |
| break; |
| case GSI_CHAN_HWO_1_ERR: |
| IPAERR("Got GSI_CHAN_HWO_1_ERR\n"); |
| break; |
| default: |
| IPAERR("Unexpected err evt: %d\n", notify->evt_id); |
| } |
| } |
| |
| static void ipa_gsi_irq_tx_notify_cb(struct gsi_chan_xfer_notify *notify) |
| { |
| struct ipa3_tx_pkt_wrapper *tx_pkt; |
| |
| IPADBG_LOW("event %d notified\n", notify->evt_id); |
| |
| switch (notify->evt_id) { |
| case GSI_CHAN_EVT_EOT: |
| atomic_set(&ipa3_ctx->transport_pm.eot_activity, 1); |
| tx_pkt = notify->xfer_user_data; |
| queue_work(tx_pkt->sys->wq, &tx_pkt->work); |
| break; |
| default: |
| IPAERR("received unexpected event id %d\n", notify->evt_id); |
| } |
| } |
| |
| static void ipa_gsi_irq_rx_notify_cb(struct gsi_chan_xfer_notify *notify) |
| { |
| struct ipa3_sys_context *sys; |
| struct ipa3_rx_pkt_wrapper *rx_pkt_expected, *rx_pkt_rcvd; |
| int clk_off; |
| |
| if (!notify) { |
| IPAERR("gsi notify is NULL.\n"); |
| return; |
| } |
| IPADBG_LOW("event %d notified\n", notify->evt_id); |
| |
| sys = (struct ipa3_sys_context *)notify->chan_user_data; |
| rx_pkt_expected = list_first_entry(&sys->head_desc_list, |
| struct ipa3_rx_pkt_wrapper, link); |
| rx_pkt_rcvd = (struct ipa3_rx_pkt_wrapper *)notify->xfer_user_data; |
| |
| if (rx_pkt_expected != rx_pkt_rcvd) { |
| IPAERR("Pkt was not filled in head of rx buffer.\n"); |
| WARN_ON(1); |
| return; |
| } |
| sys->ep->bytes_xfered_valid = true; |
| sys->ep->bytes_xfered = notify->bytes_xfered; |
| sys->ep->phys_base = rx_pkt_rcvd->data.dma_addr; |
| |
| switch (notify->evt_id) { |
| case GSI_CHAN_EVT_EOT: |
| case GSI_CHAN_EVT_EOB: |
| atomic_set(&ipa3_ctx->transport_pm.eot_activity, 1); |
| if (!atomic_read(&sys->curr_polling_state)) { |
| /* put the gsi channel into polling mode */ |
| gsi_config_channel_mode(sys->ep->gsi_chan_hdl, |
| GSI_CHAN_MODE_POLL); |
| ipa3_inc_acquire_wakelock(); |
| atomic_set(&sys->curr_polling_state, 1); |
| if (sys->ep->napi_enabled) { |
| struct ipa_active_client_logging_info log; |
| |
| IPA_ACTIVE_CLIENTS_PREP_SPECIAL(log, "NAPI"); |
| clk_off = ipa3_inc_client_enable_clks_no_block( |
| &log); |
| if (!clk_off) |
| sys->ep->client_notify(sys->ep->priv, |
| IPA_CLIENT_START_POLL, 0); |
| else |
| queue_work(sys->wq, &sys->work); |
| } else { |
| queue_work(sys->wq, &sys->work); |
| } |
| } |
| break; |
| default: |
| IPAERR("received unexpected event id %d\n", notify->evt_id); |
| } |
| } |
| |
| static void ipa_dma_gsi_irq_rx_notify_cb(struct gsi_chan_xfer_notify *notify) |
| { |
| struct ipa3_sys_context *sys; |
| struct ipa3_dma_xfer_wrapper *rx_pkt_expected, *rx_pkt_rcvd; |
| |
| if (!notify) { |
| IPAERR("gsi notify is NULL.\n"); |
| return; |
| } |
| IPADBG_LOW("event %d notified\n", notify->evt_id); |
| |
| sys = (struct ipa3_sys_context *)notify->chan_user_data; |
| if (sys->ep->client == IPA_CLIENT_MEMCPY_DMA_SYNC_CONS) { |
| IPAERR("IRQ_RX Callback was called for DMA_SYNC_CONS.\n"); |
| return; |
| } |
| rx_pkt_expected = list_first_entry(&sys->head_desc_list, |
| struct ipa3_dma_xfer_wrapper, link); |
| rx_pkt_rcvd = (struct ipa3_dma_xfer_wrapper *)notify |
| ->xfer_user_data; |
| if (rx_pkt_expected != rx_pkt_rcvd) { |
| IPAERR("Pkt was not filled in head of rx buffer.\n"); |
| WARN_ON(1); |
| return; |
| } |
| |
| sys->ep->bytes_xfered_valid = true; |
| sys->ep->bytes_xfered = notify->bytes_xfered; |
| sys->ep->phys_base = rx_pkt_rcvd->phys_addr_dest; |
| |
| switch (notify->evt_id) { |
| case GSI_CHAN_EVT_EOT: |
| if (!atomic_read(&sys->curr_polling_state)) { |
| /* put the gsi channel into polling mode */ |
| gsi_config_channel_mode(sys->ep->gsi_chan_hdl, |
| GSI_CHAN_MODE_POLL); |
| ipa3_inc_acquire_wakelock(); |
| atomic_set(&sys->curr_polling_state, 1); |
| queue_work(sys->wq, &sys->work); |
| } |
| break; |
| default: |
| IPAERR("received unexpected event id %d\n", notify->evt_id); |
| } |
| } |
| |
| int ipa3_alloc_common_event_ring(void) |
| { |
| struct gsi_evt_ring_props gsi_evt_ring_props; |
| dma_addr_t evt_dma_addr; |
| int result; |
| |
| memset(&gsi_evt_ring_props, 0, sizeof(gsi_evt_ring_props)); |
| gsi_evt_ring_props.intf = GSI_EVT_CHTYPE_GPI_EV; |
| gsi_evt_ring_props.intr = GSI_INTR_IRQ; |
| gsi_evt_ring_props.re_size = GSI_EVT_RING_RE_SIZE_16B; |
| |
| gsi_evt_ring_props.ring_len = IPA_COMMON_EVENT_RING_SIZE; |
| |
| gsi_evt_ring_props.ring_base_vaddr = |
| dma_alloc_coherent(ipa3_ctx->pdev, |
| gsi_evt_ring_props.ring_len, &evt_dma_addr, GFP_KERNEL); |
| if (!gsi_evt_ring_props.ring_base_vaddr) { |
| IPAERR("fail to dma alloc %u bytes\n", |
| gsi_evt_ring_props.ring_len); |
| return -ENOMEM; |
| } |
| gsi_evt_ring_props.ring_base_addr = evt_dma_addr; |
| gsi_evt_ring_props.int_modt = 0; |
| gsi_evt_ring_props.int_modc = 1; /* moderation comes from channel*/ |
| gsi_evt_ring_props.rp_update_addr = 0; |
| gsi_evt_ring_props.exclusive = false; |
| gsi_evt_ring_props.err_cb = ipa_gsi_evt_ring_err_cb; |
| gsi_evt_ring_props.user_data = NULL; |
| |
| result = gsi_alloc_evt_ring(&gsi_evt_ring_props, |
| ipa3_ctx->gsi_dev_hdl, &ipa3_ctx->gsi_evt_comm_hdl); |
| if (result) { |
| IPAERR("gsi_alloc_evt_ring failed %d\n", result); |
| return result; |
| } |
| ipa3_ctx->gsi_evt_comm_ring_rem = IPA_COMMON_EVENT_RING_SIZE; |
| |
| return 0; |
| } |
| |
| static int ipa_gsi_setup_channel(struct ipa_sys_connect_params *in, |
| struct ipa3_ep_context *ep) |
| { |
| struct gsi_evt_ring_props gsi_evt_ring_props; |
| struct gsi_chan_props gsi_channel_props; |
| union __packed gsi_channel_scratch ch_scratch; |
| const struct ipa_gsi_ep_config *gsi_ep_info; |
| dma_addr_t dma_addr; |
| dma_addr_t evt_dma_addr; |
| int result; |
| |
| if (!ep) { |
| IPAERR("EP context is empty\n"); |
| return -EINVAL; |
| } |
| |
| evt_dma_addr = 0; |
| ep->gsi_evt_ring_hdl = ~0; |
| memset(&gsi_evt_ring_props, 0, sizeof(gsi_evt_ring_props)); |
| if (ep->sys->use_comm_evt_ring) { |
| if (ipa3_ctx->gsi_evt_comm_ring_rem < 2 * in->desc_fifo_sz) { |
| IPAERR("not enough space in common event ring\n"); |
| IPAERR("available: %d needed: %d\n", |
| ipa3_ctx->gsi_evt_comm_ring_rem, |
| 2 * in->desc_fifo_sz); |
| WARN_ON(1); |
| return -EFAULT; |
| } |
| ipa3_ctx->gsi_evt_comm_ring_rem -= (2 * in->desc_fifo_sz); |
| ep->gsi_evt_ring_hdl = ipa3_ctx->gsi_evt_comm_hdl; |
| } else if (ep->sys->policy != IPA_POLICY_NOINTR_MODE || |
| IPA_CLIENT_IS_CONS(ep->client)) { |
| gsi_evt_ring_props.intf = GSI_EVT_CHTYPE_GPI_EV; |
| gsi_evt_ring_props.intr = GSI_INTR_IRQ; |
| gsi_evt_ring_props.re_size = |
| GSI_EVT_RING_RE_SIZE_16B; |
| |
| /* |
| * GSI ring length is calculated based on the desc_fifo_sz |
| * which was meant to define the BAM desc fifo. GSI descriptors |
| * are 16B as opposed to 8B for BAM. |
| */ |
| gsi_evt_ring_props.ring_len = 2 * in->desc_fifo_sz; |
| |
| gsi_evt_ring_props.ring_base_vaddr = |
| dma_alloc_coherent(ipa3_ctx->pdev, |
| gsi_evt_ring_props.ring_len, |
| &evt_dma_addr, GFP_KERNEL); |
| if (!gsi_evt_ring_props.ring_base_vaddr) { |
| IPAERR("fail to dma alloc %u bytes\n", |
| gsi_evt_ring_props.ring_len); |
| return -ENOMEM; |
| } |
| gsi_evt_ring_props.ring_base_addr = evt_dma_addr; |
| |
| /* copy mem info */ |
| ep->gsi_mem_info.evt_ring_len = gsi_evt_ring_props.ring_len; |
| ep->gsi_mem_info.evt_ring_base_addr = |
| gsi_evt_ring_props.ring_base_addr; |
| ep->gsi_mem_info.evt_ring_base_vaddr = |
| gsi_evt_ring_props.ring_base_vaddr; |
| |
| gsi_evt_ring_props.int_modt = IPA_GSI_EVT_RING_INT_MODT; |
| gsi_evt_ring_props.int_modc = 1; |
| |
| IPADBG("client=%d moderation threshold cycles=%u cnt=%u\n", |
| ep->client, |
| gsi_evt_ring_props.int_modt, |
| gsi_evt_ring_props.int_modc); |
| gsi_evt_ring_props.rp_update_addr = 0; |
| gsi_evt_ring_props.exclusive = true; |
| gsi_evt_ring_props.err_cb = ipa_gsi_evt_ring_err_cb; |
| gsi_evt_ring_props.user_data = NULL; |
| |
| result = gsi_alloc_evt_ring(&gsi_evt_ring_props, |
| ipa3_ctx->gsi_dev_hdl, &ep->gsi_evt_ring_hdl); |
| if (result != GSI_STATUS_SUCCESS) |
| goto fail_alloc_evt_ring; |
| } |
| |
| memset(&gsi_channel_props, 0, sizeof(gsi_channel_props)); |
| gsi_channel_props.prot = GSI_CHAN_PROT_GPI; |
| if (IPA_CLIENT_IS_PROD(ep->client)) { |
| gsi_channel_props.dir = GSI_CHAN_DIR_TO_GSI; |
| } else { |
| gsi_channel_props.dir = GSI_CHAN_DIR_FROM_GSI; |
| gsi_channel_props.max_re_expected = ep->sys->rx_pool_sz; |
| } |
| |
| gsi_ep_info = ipa3_get_gsi_ep_info(ep->client); |
| if (!gsi_ep_info) { |
| IPAERR("Failed getting GSI EP info for client=%d\n", |
| ep->client); |
| result = -EINVAL; |
| goto fail_get_gsi_ep_info; |
| } else |
| gsi_channel_props.ch_id = gsi_ep_info->ipa_gsi_chan_num; |
| |
| gsi_channel_props.evt_ring_hdl = ep->gsi_evt_ring_hdl; |
| gsi_channel_props.re_size = GSI_CHAN_RE_SIZE_16B; |
| |
| /* |
| * GSI ring length is calculated based on the desc_fifo_sz which was |
| * meant to define the BAM desc fifo. GSI descriptors are 16B as opposed |
| * to 8B for BAM. For PROD pipes there is also an additional descriptor |
| * for TAG STATUS immediate command. APPS_WAN_PROD pipe is an exception |
| * as this pipe do not use TAG STATUS for completion. Instead it uses |
| * event ring based completions. |
| */ |
| if (ep->client == IPA_CLIENT_APPS_WAN_PROD) |
| gsi_channel_props.ring_len = 2 * in->desc_fifo_sz; |
| else if (IPA_CLIENT_IS_PROD(ep->client)) |
| gsi_channel_props.ring_len = 4 * in->desc_fifo_sz; |
| else |
| gsi_channel_props.ring_len = 2 * in->desc_fifo_sz; |
| gsi_channel_props.ring_base_vaddr = |
| dma_alloc_coherent(ipa3_ctx->pdev, gsi_channel_props.ring_len, |
| &dma_addr, GFP_KERNEL); |
| if (!gsi_channel_props.ring_base_vaddr) { |
| IPAERR("fail to dma alloc %u bytes\n", |
| gsi_channel_props.ring_len); |
| result = -ENOMEM; |
| goto fail_alloc_channel_ring; |
| } |
| gsi_channel_props.ring_base_addr = dma_addr; |
| |
| /* copy mem info */ |
| ep->gsi_mem_info.chan_ring_len = gsi_channel_props.ring_len; |
| ep->gsi_mem_info.chan_ring_base_addr = |
| gsi_channel_props.ring_base_addr; |
| ep->gsi_mem_info.chan_ring_base_vaddr = |
| gsi_channel_props.ring_base_vaddr; |
| |
| gsi_channel_props.use_db_eng = GSI_CHAN_DB_MODE; |
| gsi_channel_props.max_prefetch = GSI_ONE_PREFETCH_SEG; |
| if (ep->client == IPA_CLIENT_APPS_CMD_PROD) |
| gsi_channel_props.low_weight = IPA_GSI_MAX_CH_LOW_WEIGHT; |
| else |
| gsi_channel_props.low_weight = 1; |
| gsi_channel_props.chan_user_data = ep->sys; |
| gsi_channel_props.err_cb = ipa_gsi_chan_err_cb; |
| if (IPA_CLIENT_IS_PROD(ep->client)) |
| gsi_channel_props.xfer_cb = ipa_gsi_irq_tx_notify_cb; |
| else |
| gsi_channel_props.xfer_cb = ipa_gsi_irq_rx_notify_cb; |
| if (IPA_CLIENT_IS_MEMCPY_DMA_CONS(ep->client)) |
| gsi_channel_props.xfer_cb = ipa_dma_gsi_irq_rx_notify_cb; |
| result = gsi_alloc_channel(&gsi_channel_props, ipa3_ctx->gsi_dev_hdl, |
| &ep->gsi_chan_hdl); |
| if (result != GSI_STATUS_SUCCESS) |
| goto fail_alloc_channel; |
| |
| memset(&ch_scratch, 0, sizeof(ch_scratch)); |
| ch_scratch.gpi.max_outstanding_tre = gsi_ep_info->ipa_if_tlv * |
| GSI_CHAN_RE_SIZE_16B; |
| ch_scratch.gpi.outstanding_threshold = 2 * GSI_CHAN_RE_SIZE_16B; |
| result = gsi_write_channel_scratch(ep->gsi_chan_hdl, ch_scratch); |
| if (result != GSI_STATUS_SUCCESS) { |
| IPAERR("failed to write scratch %d\n", result); |
| goto fail_write_channel_scratch; |
| } |
| |
| result = gsi_start_channel(ep->gsi_chan_hdl); |
| if (result != GSI_STATUS_SUCCESS) |
| goto fail_start_channel; |
| if (ep->client == IPA_CLIENT_MEMCPY_DMA_SYNC_CONS) |
| gsi_config_channel_mode(ep->gsi_chan_hdl, |
| GSI_CHAN_MODE_POLL); |
| return 0; |
| |
| fail_start_channel: |
| fail_write_channel_scratch: |
| if (gsi_dealloc_channel(ep->gsi_chan_hdl) |
| != GSI_STATUS_SUCCESS) { |
| IPAERR("Failed to dealloc GSI chan.\n"); |
| BUG(); |
| } |
| fail_alloc_channel: |
| dma_free_coherent(ipa3_ctx->pdev, gsi_channel_props.ring_len, |
| gsi_channel_props.ring_base_vaddr, dma_addr); |
| fail_alloc_channel_ring: |
| fail_get_gsi_ep_info: |
| if (ep->gsi_evt_ring_hdl != ~0) { |
| gsi_dealloc_evt_ring(ep->gsi_evt_ring_hdl); |
| ep->gsi_evt_ring_hdl = ~0; |
| } |
| fail_alloc_evt_ring: |
| if (gsi_evt_ring_props.ring_base_vaddr) |
| dma_free_coherent(ipa3_ctx->pdev, gsi_evt_ring_props.ring_len, |
| gsi_evt_ring_props.ring_base_vaddr, evt_dma_addr); |
| IPAERR("Return with err: %d\n", result); |
| return result; |
| } |
| |
| static int ipa_populate_tag_field(struct ipa3_desc *desc, |
| struct ipa3_tx_pkt_wrapper *tx_pkt, |
| struct ipahal_imm_cmd_pyld **tag_pyld_ret) |
| { |
| struct ipahal_imm_cmd_pyld *tag_pyld; |
| struct ipahal_imm_cmd_ip_packet_tag_status tag_cmd = {0}; |
| |
| /* populate tag field only if it is NULL */ |
| if (desc->pyld == NULL) { |
| tag_cmd.tag = pointer_to_tag_wa(tx_pkt); |
| tag_pyld = ipahal_construct_imm_cmd( |
| IPA_IMM_CMD_IP_PACKET_TAG_STATUS, &tag_cmd, true); |
| if (unlikely(!tag_pyld)) { |
| IPAERR("Failed to construct ip_packet_tag_status\n"); |
| return -EFAULT; |
| } |
| /* |
| * This is for 32-bit pointer, will need special |
| * handling if 64-bit pointer is used |
| */ |
| IPADBG_LOW("tx_pkt sent in tag: 0x%p\n", tx_pkt); |
| desc->pyld = tag_pyld->data; |
| desc->opcode = tag_pyld->opcode; |
| desc->len = tag_pyld->len; |
| desc->user1 = tag_pyld; |
| desc->type = IPA_IMM_CMD_DESC; |
| desc->callback = ipa3_tag_destroy_imm; |
| |
| *tag_pyld_ret = tag_pyld; |
| } |
| return 0; |
| } |
| |
| static int ipa_poll_gsi_pkt(struct ipa3_sys_context *sys, |
| struct ipa_mem_buffer *mem_info) |
| { |
| int ret; |
| struct gsi_chan_xfer_notify xfer_notify; |
| struct ipa3_rx_pkt_wrapper *rx_pkt; |
| |
| if (sys->ep->bytes_xfered_valid) { |
| mem_info->phys_base = sys->ep->phys_base; |
| mem_info->size = (u32)sys->ep->bytes_xfered; |
| sys->ep->bytes_xfered_valid = false; |
| return GSI_STATUS_SUCCESS; |
| } |
| |
| ret = gsi_poll_channel(sys->ep->gsi_chan_hdl, |
| &xfer_notify); |
| if (ret == GSI_STATUS_POLL_EMPTY) |
| return ret; |
| else if (ret != GSI_STATUS_SUCCESS) { |
| IPAERR("Poll channel err: %d\n", ret); |
| return ret; |
| } |
| |
| rx_pkt = (struct ipa3_rx_pkt_wrapper *) |
| xfer_notify.xfer_user_data; |
| mem_info->phys_base = rx_pkt->data.dma_addr; |
| mem_info->size = xfer_notify.bytes_xfered; |
| |
| return ret; |
| } |
| |
| /** |
| * ipa3_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 ipa3_rx_poll(u32 clnt_hdl, int weight) |
| { |
| struct ipa3_ep_context *ep; |
| int ret; |
| int cnt = 0; |
| struct ipa_mem_buffer mem_info = {0}; |
| static int total_cnt; |
| struct ipa_active_client_logging_info log; |
| |
| IPA_ACTIVE_CLIENTS_PREP_SPECIAL(log, "NAPI"); |
| |
| if (clnt_hdl >= ipa3_ctx->ipa_num_pipes || |
| ipa3_ctx->ep[clnt_hdl].valid == 0) { |
| IPAERR("bad parm 0x%x\n", clnt_hdl); |
| return cnt; |
| } |
| |
| ep = &ipa3_ctx->ep[clnt_hdl]; |
| |
| while (cnt < weight && |
| atomic_read(&ep->sys->curr_polling_state)) { |
| |
| atomic_set(&ipa3_ctx->transport_pm.eot_activity, 1); |
| ret = ipa_poll_gsi_pkt(ep->sys, &mem_info); |
| if (ret) |
| break; |
| |
| ipa3_wq_rx_common(ep->sys, mem_info.size); |
| cnt += IPA_WAN_AGGR_PKT_CNT; |
| total_cnt++; |
| |
| if (ep->sys->len == 0 || total_cnt >= ep->sys->rx_pool_sz) { |
| total_cnt = 0; |
| cnt = cnt-1; |
| break; |
| } |
| }; |
| |
| if (cnt < weight) { |
| ep->client_notify(ep->priv, IPA_CLIENT_COMP_NAPI, 0); |
| ipa3_rx_switch_to_intr_mode(ep->sys); |
| ipa3_dec_client_disable_clks_no_block(&log); |
| } |
| |
| return cnt; |
| } |
| |
| static unsigned long tag_to_pointer_wa(uint64_t tag) |
| { |
| return 0xFFFF000000000000 | (unsigned long) tag; |
| } |
| |
| static uint64_t pointer_to_tag_wa(struct ipa3_tx_pkt_wrapper *tx_pkt) |
| { |
| u16 temp; |
| /* Add the check but it might have throughput issue */ |
| if (ipa3_is_msm_device()) { |
| temp = (u16) (~((unsigned long) tx_pkt & |
| 0xFFFF000000000000) >> 48); |
| if (temp) { |
| IPAERR("The 16 prefix is not all 1s (%p)\n", |
| tx_pkt); |
| BUG(); |
| } |
| } |
| return (unsigned long)tx_pkt & 0x0000FFFFFFFFFFFF; |
| } |
| |
| /** |
| * ipa_gsi_ch20_wa() - software workaround for IPA GSI channel 20 |
| * |
| * A hardware limitation requires to avoid using GSI physical channel 20. |
| * This function allocates GSI physical channel 20 and holds it to prevent |
| * others to use it. |
| * |
| * Return codes: 0 on success, negative on failure |
| */ |
| int ipa_gsi_ch20_wa(void) |
| { |
| struct gsi_chan_props gsi_channel_props; |
| dma_addr_t dma_addr; |
| int result; |
| int i; |
| unsigned long chan_hdl[IPA_GSI_CH_20_WA_NUM_CH_TO_ALLOC]; |
| unsigned long chan_hdl_to_keep; |
| |
| |
| memset(&gsi_channel_props, 0, sizeof(gsi_channel_props)); |
| gsi_channel_props.prot = GSI_CHAN_PROT_GPI; |
| gsi_channel_props.dir = GSI_CHAN_DIR_TO_GSI; |
| gsi_channel_props.evt_ring_hdl = ~0; |
| gsi_channel_props.re_size = GSI_CHAN_RE_SIZE_16B; |
| gsi_channel_props.ring_len = 4 * gsi_channel_props.re_size; |
| gsi_channel_props.ring_base_vaddr = |
| dma_alloc_coherent(ipa3_ctx->pdev, gsi_channel_props.ring_len, |
| &dma_addr, 0); |
| gsi_channel_props.ring_base_addr = dma_addr; |
| gsi_channel_props.use_db_eng = GSI_CHAN_DB_MODE; |
| gsi_channel_props.max_prefetch = GSI_ONE_PREFETCH_SEG; |
| gsi_channel_props.low_weight = 1; |
| gsi_channel_props.err_cb = ipa_gsi_chan_err_cb; |
| gsi_channel_props.xfer_cb = ipa_gsi_irq_tx_notify_cb; |
| |
| /* first allocate channels up to channel 20 */ |
| for (i = 0; i < IPA_GSI_CH_20_WA_NUM_CH_TO_ALLOC; i++) { |
| gsi_channel_props.ch_id = i; |
| result = gsi_alloc_channel(&gsi_channel_props, |
| ipa3_ctx->gsi_dev_hdl, |
| &chan_hdl[i]); |
| if (result != GSI_STATUS_SUCCESS) { |
| IPAERR("failed to alloc channel %d err %d\n", |
| i, result); |
| return result; |
| } |
| } |
| |
| /* allocate channel 20 */ |
| gsi_channel_props.ch_id = IPA_GSI_CH_20_WA_VIRT_CHAN; |
| result = gsi_alloc_channel(&gsi_channel_props, ipa3_ctx->gsi_dev_hdl, |
| &chan_hdl_to_keep); |
| if (result != GSI_STATUS_SUCCESS) { |
| IPAERR("failed to alloc channel %d err %d\n", |
| i, result); |
| return result; |
| } |
| |
| /* release all other channels */ |
| for (i = 0; i < IPA_GSI_CH_20_WA_NUM_CH_TO_ALLOC; i++) { |
| result = gsi_dealloc_channel(chan_hdl[i]); |
| if (result != GSI_STATUS_SUCCESS) { |
| IPAERR("failed to dealloc channel %d err %d\n", |
| i, result); |
| return result; |
| } |
| } |
| |
| /* DMA memory shall not be freed as it is used by channel 20 */ |
| return 0; |
| } |
| |
| /** |
| * 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; |
| } |