From a5969cabbb4660eab42b6ef0412cbbd1200cf14d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 12 Oct 2024 07:10:09 +0000
Subject: [PATCH] 修改led为gpio
---
kernel/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c | 925 +--------------------------------------------------------
1 files changed, 29 insertions(+), 896 deletions(-)
diff --git a/kernel/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c b/kernel/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
index dea29a6..833fd13 100644
--- a/kernel/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
+++ b/kernel/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
@@ -6,7 +6,7 @@
* GPL LICENSE SUMMARY
*
* Copyright(c) 2017 Intel Deutschland GmbH
- * Copyright(c) 2018 Intel Corporation
+ * Copyright(c) 2018 - 2020 Intel Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
@@ -20,7 +20,7 @@
* BSD LICENSE
*
* Copyright(c) 2017 Intel Deutschland GmbH
- * Copyright(c) 2018 Intel Corporation
+ * Copyright(c) 2018 - 2020 Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -50,7 +50,6 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*****************************************************************************/
-#include <linux/pm_runtime.h>
#include <net/tso.h>
#include <linux/tcp.h>
@@ -59,572 +58,7 @@
#include "iwl-io.h"
#include "internal.h"
#include "fw/api/tx.h"
-
- /*
- * iwl_pcie_gen2_tx_stop - Stop all Tx DMA channels
- */
-void iwl_pcie_gen2_tx_stop(struct iwl_trans *trans)
-{
- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
- int txq_id;
-
- /*
- * This function can be called before the op_mode disabled the
- * queues. This happens when we have an rfkill interrupt.
- * Since we stop Tx altogether - mark the queues as stopped.
- */
- memset(trans_pcie->queue_stopped, 0, sizeof(trans_pcie->queue_stopped));
- memset(trans_pcie->queue_used, 0, sizeof(trans_pcie->queue_used));
-
- /* Unmap DMA from host system and free skb's */
- for (txq_id = 0; txq_id < ARRAY_SIZE(trans_pcie->txq); txq_id++) {
- if (!trans_pcie->txq[txq_id])
- continue;
- iwl_pcie_gen2_txq_unmap(trans, txq_id);
- }
-}
-
-/*
- * iwl_pcie_txq_update_byte_tbl - Set up entry in Tx byte-count array
- */
-static void iwl_pcie_gen2_update_byte_tbl(struct iwl_trans_pcie *trans_pcie,
- struct iwl_txq *txq, u16 byte_cnt,
- int num_tbs)
-{
- struct iwlagn_scd_bc_tbl *scd_bc_tbl = txq->bc_tbl.addr;
- struct iwl_trans *trans = iwl_trans_pcie_get_trans(trans_pcie);
- struct iwl_gen3_bc_tbl *scd_bc_tbl_gen3 = txq->bc_tbl.addr;
- int idx = iwl_pcie_get_cmd_index(txq, txq->write_ptr);
- u8 filled_tfd_size, num_fetch_chunks;
- u16 len = byte_cnt;
- __le16 bc_ent;
-
- if (trans_pcie->bc_table_dword)
- len = DIV_ROUND_UP(len, 4);
-
- if (WARN_ON(len > 0xFFF || idx >= txq->n_window))
- return;
-
- filled_tfd_size = offsetof(struct iwl_tfh_tfd, tbs) +
- num_tbs * sizeof(struct iwl_tfh_tb);
- /*
- * filled_tfd_size contains the number of filled bytes in the TFD.
- * Dividing it by 64 will give the number of chunks to fetch
- * to SRAM- 0 for one chunk, 1 for 2 and so on.
- * If, for example, TFD contains only 3 TBs then 32 bytes
- * of the TFD are used, and only one chunk of 64 bytes should
- * be fetched
- */
- num_fetch_chunks = DIV_ROUND_UP(filled_tfd_size, 64) - 1;
-
- bc_ent = cpu_to_le16(len | (num_fetch_chunks << 12));
- if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
- scd_bc_tbl_gen3->tfd_offset[idx] = bc_ent;
- else
- scd_bc_tbl->tfd_offset[idx] = bc_ent;
-}
-
-/*
- * iwl_pcie_gen2_txq_inc_wr_ptr - Send new write index to hardware
- */
-static void iwl_pcie_gen2_txq_inc_wr_ptr(struct iwl_trans *trans,
- struct iwl_txq *txq)
-{
- lockdep_assert_held(&txq->lock);
-
- IWL_DEBUG_TX(trans, "Q:%d WR: 0x%x\n", txq->id, txq->write_ptr);
-
- /*
- * if not in power-save mode, uCode will never sleep when we're
- * trying to tx (during RFKILL, we're not trying to tx).
- */
- iwl_write32(trans, HBUS_TARG_WRPTR, txq->write_ptr | (txq->id << 16));
-}
-
-static u8 iwl_pcie_gen2_get_num_tbs(struct iwl_trans *trans,
- struct iwl_tfh_tfd *tfd)
-{
- return le16_to_cpu(tfd->num_tbs) & 0x1f;
-}
-
-static void iwl_pcie_gen2_tfd_unmap(struct iwl_trans *trans,
- struct iwl_cmd_meta *meta,
- struct iwl_tfh_tfd *tfd)
-{
- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
- int i, num_tbs;
-
- /* Sanity check on number of chunks */
- num_tbs = iwl_pcie_gen2_get_num_tbs(trans, tfd);
-
- if (num_tbs > trans_pcie->max_tbs) {
- IWL_ERR(trans, "Too many chunks: %i\n", num_tbs);
- return;
- }
-
- /* first TB is never freed - it's the bidirectional DMA data */
- for (i = 1; i < num_tbs; i++) {
- if (meta->tbs & BIT(i))
- dma_unmap_page(trans->dev,
- le64_to_cpu(tfd->tbs[i].addr),
- le16_to_cpu(tfd->tbs[i].tb_len),
- DMA_TO_DEVICE);
- else
- dma_unmap_single(trans->dev,
- le64_to_cpu(tfd->tbs[i].addr),
- le16_to_cpu(tfd->tbs[i].tb_len),
- DMA_TO_DEVICE);
- }
-
- tfd->num_tbs = 0;
-}
-
-static void iwl_pcie_gen2_free_tfd(struct iwl_trans *trans, struct iwl_txq *txq)
-{
- /* rd_ptr is bounded by TFD_QUEUE_SIZE_MAX and
- * idx is bounded by n_window
- */
- int idx = iwl_pcie_get_cmd_index(txq, txq->read_ptr);
-
- lockdep_assert_held(&txq->lock);
-
- iwl_pcie_gen2_tfd_unmap(trans, &txq->entries[idx].meta,
- iwl_pcie_get_tfd(trans, txq, idx));
-
- /* free SKB */
- if (txq->entries) {
- struct sk_buff *skb;
-
- skb = txq->entries[idx].skb;
-
- /* Can be called from irqs-disabled context
- * If skb is not NULL, it means that the whole queue is being
- * freed and that the queue is not empty - free the skb
- */
- if (skb) {
- iwl_op_mode_free_skb(trans->op_mode, skb);
- txq->entries[idx].skb = NULL;
- }
- }
-}
-
-static int iwl_pcie_gen2_set_tb(struct iwl_trans *trans,
- struct iwl_tfh_tfd *tfd, dma_addr_t addr,
- u16 len)
-{
- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
- int idx = iwl_pcie_gen2_get_num_tbs(trans, tfd);
- struct iwl_tfh_tb *tb = &tfd->tbs[idx];
-
- /* Each TFD can point to a maximum max_tbs Tx buffers */
- if (le16_to_cpu(tfd->num_tbs) >= trans_pcie->max_tbs) {
- IWL_ERR(trans, "Error can not send more than %d chunks\n",
- trans_pcie->max_tbs);
- return -EINVAL;
- }
-
- put_unaligned_le64(addr, &tb->addr);
- tb->tb_len = cpu_to_le16(len);
-
- tfd->num_tbs = cpu_to_le16(idx + 1);
-
- return idx;
-}
-
-static int iwl_pcie_gen2_build_amsdu(struct iwl_trans *trans,
- struct sk_buff *skb,
- struct iwl_tfh_tfd *tfd, int start_len,
- u8 hdr_len, struct iwl_device_cmd *dev_cmd)
-{
-#ifdef CONFIG_INET
- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
- struct iwl_tx_cmd *tx_cmd = (void *)dev_cmd->payload;
- struct ieee80211_hdr *hdr = (void *)skb->data;
- unsigned int snap_ip_tcp_hdrlen, ip_hdrlen, total_len, hdr_room;
- unsigned int mss = skb_shinfo(skb)->gso_size;
- u16 length, amsdu_pad;
- u8 *start_hdr;
- struct iwl_tso_hdr_page *hdr_page;
- struct page **page_ptr;
- struct tso_t tso;
-
- trace_iwlwifi_dev_tx(trans->dev, skb, tfd, sizeof(*tfd),
- &dev_cmd->hdr, start_len, 0);
-
- ip_hdrlen = skb_transport_header(skb) - skb_network_header(skb);
- snap_ip_tcp_hdrlen = 8 + ip_hdrlen + tcp_hdrlen(skb);
- total_len = skb->len - snap_ip_tcp_hdrlen - hdr_len;
- amsdu_pad = 0;
-
- /* total amount of header we may need for this A-MSDU */
- hdr_room = DIV_ROUND_UP(total_len, mss) *
- (3 + snap_ip_tcp_hdrlen + sizeof(struct ethhdr));
-
- /* Our device supports 9 segments at most, it will fit in 1 page */
- hdr_page = get_page_hdr(trans, hdr_room);
- if (!hdr_page)
- return -ENOMEM;
-
- get_page(hdr_page->page);
- start_hdr = hdr_page->pos;
- page_ptr = (void *)((u8 *)skb->cb + trans_pcie->page_offs);
- *page_ptr = hdr_page->page;
-
- /*
- * Pull the ieee80211 header to be able to use TSO core,
- * we will restore it for the tx_status flow.
- */
- skb_pull(skb, hdr_len);
-
- /*
- * Remove the length of all the headers that we don't actually
- * have in the MPDU by themselves, but that we duplicate into
- * all the different MSDUs inside the A-MSDU.
- */
- le16_add_cpu(&tx_cmd->len, -snap_ip_tcp_hdrlen);
-
- tso_start(skb, &tso);
-
- while (total_len) {
- /* this is the data left for this subframe */
- unsigned int data_left = min_t(unsigned int, mss, total_len);
- struct sk_buff *csum_skb = NULL;
- unsigned int tb_len;
- dma_addr_t tb_phys;
- u8 *subf_hdrs_start = hdr_page->pos;
-
- total_len -= data_left;
-
- memset(hdr_page->pos, 0, amsdu_pad);
- hdr_page->pos += amsdu_pad;
- amsdu_pad = (4 - (sizeof(struct ethhdr) + snap_ip_tcp_hdrlen +
- data_left)) & 0x3;
- ether_addr_copy(hdr_page->pos, ieee80211_get_DA(hdr));
- hdr_page->pos += ETH_ALEN;
- ether_addr_copy(hdr_page->pos, ieee80211_get_SA(hdr));
- hdr_page->pos += ETH_ALEN;
-
- length = snap_ip_tcp_hdrlen + data_left;
- *((__be16 *)hdr_page->pos) = cpu_to_be16(length);
- hdr_page->pos += sizeof(length);
-
- /*
- * This will copy the SNAP as well which will be considered
- * as MAC header.
- */
- tso_build_hdr(skb, hdr_page->pos, &tso, data_left, !total_len);
-
- hdr_page->pos += snap_ip_tcp_hdrlen;
-
- tb_len = hdr_page->pos - start_hdr;
- tb_phys = dma_map_single(trans->dev, start_hdr,
- tb_len, DMA_TO_DEVICE);
- if (unlikely(dma_mapping_error(trans->dev, tb_phys))) {
- dev_kfree_skb(csum_skb);
- goto out_err;
- }
- iwl_pcie_gen2_set_tb(trans, tfd, tb_phys, tb_len);
- trace_iwlwifi_dev_tx_tso_chunk(trans->dev, start_hdr, tb_len);
- /* add this subframe's headers' length to the tx_cmd */
- le16_add_cpu(&tx_cmd->len, hdr_page->pos - subf_hdrs_start);
-
- /* prepare the start_hdr for the next subframe */
- start_hdr = hdr_page->pos;
-
- /* put the payload */
- while (data_left) {
- tb_len = min_t(unsigned int, tso.size, data_left);
- tb_phys = dma_map_single(trans->dev, tso.data,
- tb_len, DMA_TO_DEVICE);
- if (unlikely(dma_mapping_error(trans->dev, tb_phys))) {
- dev_kfree_skb(csum_skb);
- goto out_err;
- }
- iwl_pcie_gen2_set_tb(trans, tfd, tb_phys, tb_len);
- trace_iwlwifi_dev_tx_tso_chunk(trans->dev, tso.data,
- tb_len);
-
- data_left -= tb_len;
- tso_build_data(skb, &tso, tb_len);
- }
- }
-
- /* re -add the WiFi header */
- skb_push(skb, hdr_len);
-
- return 0;
-
-out_err:
-#endif
- return -EINVAL;
-}
-
-static struct
-iwl_tfh_tfd *iwl_pcie_gen2_build_tx_amsdu(struct iwl_trans *trans,
- struct iwl_txq *txq,
- struct iwl_device_cmd *dev_cmd,
- struct sk_buff *skb,
- struct iwl_cmd_meta *out_meta,
- int hdr_len,
- int tx_cmd_len)
-{
- int idx = iwl_pcie_get_cmd_index(txq, txq->write_ptr);
- struct iwl_tfh_tfd *tfd = iwl_pcie_get_tfd(trans, txq, idx);
- dma_addr_t tb_phys;
- int len;
- void *tb1_addr;
-
- tb_phys = iwl_pcie_get_first_tb_dma(txq, idx);
-
- iwl_pcie_gen2_set_tb(trans, tfd, tb_phys, IWL_FIRST_TB_SIZE);
-
- /*
- * The second TB (tb1) points to the remainder of the TX command
- * and the 802.11 header - dword aligned size
- * (This calculation modifies the TX command, so do it before the
- * setup of the first TB)
- */
- len = tx_cmd_len + sizeof(struct iwl_cmd_header) + hdr_len -
- IWL_FIRST_TB_SIZE;
-
- /* do not align A-MSDU to dword as the subframe header aligns it */
-
- /* map the data for TB1 */
- tb1_addr = ((u8 *)&dev_cmd->hdr) + IWL_FIRST_TB_SIZE;
- tb_phys = dma_map_single(trans->dev, tb1_addr, len, DMA_TO_DEVICE);
- if (unlikely(dma_mapping_error(trans->dev, tb_phys)))
- goto out_err;
- iwl_pcie_gen2_set_tb(trans, tfd, tb_phys, len);
-
- if (iwl_pcie_gen2_build_amsdu(trans, skb, tfd,
- len + IWL_FIRST_TB_SIZE,
- hdr_len, dev_cmd))
- goto out_err;
-
- /* building the A-MSDU might have changed this data, memcpy it now */
- memcpy(&txq->first_tb_bufs[idx], &dev_cmd->hdr, IWL_FIRST_TB_SIZE);
- return tfd;
-
-out_err:
- iwl_pcie_gen2_tfd_unmap(trans, out_meta, tfd);
- return NULL;
-}
-
-static struct
-iwl_tfh_tfd *iwl_pcie_gen2_build_tx(struct iwl_trans *trans,
- struct iwl_txq *txq,
- struct iwl_device_cmd *dev_cmd,
- struct sk_buff *skb,
- struct iwl_cmd_meta *out_meta,
- int hdr_len,
- int tx_cmd_len)
-{
- int idx = iwl_pcie_get_cmd_index(txq, txq->write_ptr);
- struct iwl_tfh_tfd *tfd = iwl_pcie_get_tfd(trans, txq, idx);
- dma_addr_t tb_phys;
- int i, len, tb1_len, tb2_len;
- void *tb1_addr;
-
- tb_phys = iwl_pcie_get_first_tb_dma(txq, idx);
-
- /* The first TB points to bi-directional DMA data */
- memcpy(&txq->first_tb_bufs[idx], &dev_cmd->hdr, IWL_FIRST_TB_SIZE);
-
- iwl_pcie_gen2_set_tb(trans, tfd, tb_phys, IWL_FIRST_TB_SIZE);
-
- /*
- * The second TB (tb1) points to the remainder of the TX command
- * and the 802.11 header - dword aligned size
- * (This calculation modifies the TX command, so do it before the
- * setup of the first TB)
- */
- len = tx_cmd_len + sizeof(struct iwl_cmd_header) + hdr_len -
- IWL_FIRST_TB_SIZE;
-
- tb1_len = ALIGN(len, 4);
-
- /* map the data for TB1 */
- tb1_addr = ((u8 *)&dev_cmd->hdr) + IWL_FIRST_TB_SIZE;
- tb_phys = dma_map_single(trans->dev, tb1_addr, tb1_len, DMA_TO_DEVICE);
- if (unlikely(dma_mapping_error(trans->dev, tb_phys)))
- goto out_err;
- iwl_pcie_gen2_set_tb(trans, tfd, tb_phys, tb1_len);
-
- /* set up TFD's third entry to point to remainder of skb's head */
- tb2_len = skb_headlen(skb) - hdr_len;
-
- if (tb2_len > 0) {
- tb_phys = dma_map_single(trans->dev, skb->data + hdr_len,
- tb2_len, DMA_TO_DEVICE);
- if (unlikely(dma_mapping_error(trans->dev, tb_phys)))
- goto out_err;
- iwl_pcie_gen2_set_tb(trans, tfd, tb_phys, tb2_len);
- }
-
- /* set up the remaining entries to point to the data */
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
- const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
- int tb_idx;
-
- if (!skb_frag_size(frag))
- continue;
-
- tb_phys = skb_frag_dma_map(trans->dev, frag, 0,
- skb_frag_size(frag), DMA_TO_DEVICE);
-
- if (unlikely(dma_mapping_error(trans->dev, tb_phys)))
- goto out_err;
- tb_idx = iwl_pcie_gen2_set_tb(trans, tfd, tb_phys,
- skb_frag_size(frag));
-
- out_meta->tbs |= BIT(tb_idx);
- }
-
- trace_iwlwifi_dev_tx(trans->dev, skb, tfd, sizeof(*tfd), &dev_cmd->hdr,
- IWL_FIRST_TB_SIZE + tb1_len, hdr_len);
- trace_iwlwifi_dev_tx_data(trans->dev, skb, hdr_len);
-
- return tfd;
-
-out_err:
- iwl_pcie_gen2_tfd_unmap(trans, out_meta, tfd);
- return NULL;
-}
-
-static
-struct iwl_tfh_tfd *iwl_pcie_gen2_build_tfd(struct iwl_trans *trans,
- struct iwl_txq *txq,
- struct iwl_device_cmd *dev_cmd,
- struct sk_buff *skb,
- struct iwl_cmd_meta *out_meta)
-{
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
- int idx = iwl_pcie_get_cmd_index(txq, txq->write_ptr);
- struct iwl_tfh_tfd *tfd = iwl_pcie_get_tfd(trans, txq, idx);
- int len, hdr_len;
- bool amsdu;
-
- /* There must be data left over for TB1 or this code must be changed */
- BUILD_BUG_ON(sizeof(struct iwl_tx_cmd_gen2) < IWL_FIRST_TB_SIZE);
-
- memset(tfd, 0, sizeof(*tfd));
-
- if (trans->cfg->device_family < IWL_DEVICE_FAMILY_22560)
- len = sizeof(struct iwl_tx_cmd_gen2);
- else
- len = sizeof(struct iwl_tx_cmd_gen3);
-
- amsdu = ieee80211_is_data_qos(hdr->frame_control) &&
- (*ieee80211_get_qos_ctl(hdr) &
- IEEE80211_QOS_CTL_A_MSDU_PRESENT);
-
- hdr_len = ieee80211_hdrlen(hdr->frame_control);
-
- /*
- * Only build A-MSDUs here if doing so by GSO, otherwise it may be
- * an A-MSDU for other reasons, e.g. NAN or an A-MSDU having been
- * built in the higher layers already.
- */
- if (amsdu && skb_shinfo(skb)->gso_size)
- return iwl_pcie_gen2_build_tx_amsdu(trans, txq, dev_cmd, skb,
- out_meta, hdr_len, len);
-
- return iwl_pcie_gen2_build_tx(trans, txq, dev_cmd, skb, out_meta,
- hdr_len, len);
-}
-
-int iwl_trans_pcie_gen2_tx(struct iwl_trans *trans, struct sk_buff *skb,
- struct iwl_device_cmd *dev_cmd, int txq_id)
-{
- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
- struct iwl_cmd_meta *out_meta;
- struct iwl_txq *txq = trans_pcie->txq[txq_id];
- u16 cmd_len;
- int idx;
- void *tfd;
-
- if (WARN_ONCE(!test_bit(txq_id, trans_pcie->queue_used),
- "TX on unused queue %d\n", txq_id))
- return -EINVAL;
-
- if (skb_is_nonlinear(skb) &&
- skb_shinfo(skb)->nr_frags > IWL_PCIE_MAX_FRAGS(trans_pcie) &&
- __skb_linearize(skb))
- return -ENOMEM;
-
- spin_lock(&txq->lock);
-
- if (iwl_queue_space(trans, txq) < txq->high_mark) {
- iwl_stop_queue(trans, txq);
-
- /* don't put the packet on the ring, if there is no room */
- if (unlikely(iwl_queue_space(trans, txq) < 3)) {
- struct iwl_device_cmd **dev_cmd_ptr;
-
- dev_cmd_ptr = (void *)((u8 *)skb->cb +
- trans_pcie->dev_cmd_offs);
-
- *dev_cmd_ptr = dev_cmd;
- __skb_queue_tail(&txq->overflow_q, skb);
- spin_unlock(&txq->lock);
- return 0;
- }
- }
-
- idx = iwl_pcie_get_cmd_index(txq, txq->write_ptr);
-
- /* Set up driver data for this TFD */
- txq->entries[idx].skb = skb;
- txq->entries[idx].cmd = dev_cmd;
-
- dev_cmd->hdr.sequence =
- cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
- INDEX_TO_SEQ(idx)));
-
- /* Set up first empty entry in queue's array of Tx/cmd buffers */
- out_meta = &txq->entries[idx].meta;
- out_meta->flags = 0;
-
- tfd = iwl_pcie_gen2_build_tfd(trans, txq, dev_cmd, skb, out_meta);
- if (!tfd) {
- spin_unlock(&txq->lock);
- return -1;
- }
-
- if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) {
- struct iwl_tx_cmd_gen3 *tx_cmd_gen3 =
- (void *)dev_cmd->payload;
-
- cmd_len = le16_to_cpu(tx_cmd_gen3->len);
- } else {
- struct iwl_tx_cmd_gen2 *tx_cmd_gen2 =
- (void *)dev_cmd->payload;
-
- cmd_len = le16_to_cpu(tx_cmd_gen2->len);
- }
-
- /* Set up entry for this TFD in Tx byte-count array */
- iwl_pcie_gen2_update_byte_tbl(trans_pcie, txq, cmd_len,
- iwl_pcie_gen2_get_num_tbs(trans, tfd));
-
- /* start timer if queue currently empty */
- if (txq->read_ptr == txq->write_ptr) {
- if (txq->wd_timeout)
- mod_timer(&txq->stuck_timer, jiffies + txq->wd_timeout);
- IWL_DEBUG_RPM(trans, "Q: %d first tx - take ref\n", txq->id);
- iwl_trans_ref(trans);
- }
-
- /* Tell device the write index *just past* this latest filled TFD */
- txq->write_ptr = iwl_queue_inc_wrap(trans, txq->write_ptr);
- iwl_pcie_gen2_txq_inc_wr_ptr(trans, txq);
- /*
- * At this point the frame is "transmitted" successfully
- * and we will get a TX status notification eventually.
- */
- spin_unlock(&txq->lock);
- return 0;
-}
+#include "queue/tx.h"
/*************** HOST COMMAND QUEUE FUNCTIONS *****/
@@ -641,10 +75,9 @@
struct iwl_host_cmd *cmd)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
- struct iwl_txq *txq = trans_pcie->txq[trans_pcie->cmd_queue];
+ struct iwl_txq *txq = trans->txqs.txq[trans->txqs.cmd.q_id];
struct iwl_device_cmd *out_cmd;
struct iwl_cmd_meta *out_meta;
- unsigned long flags;
void *dup_buf = NULL;
dma_addr_t phys_addr;
int i, cmd_pos, idx;
@@ -654,7 +87,7 @@
const u8 *cmddata[IWL_MAX_CMD_TBS_PER_TFD];
u16 cmdlen[IWL_MAX_CMD_TBS_PER_TFD];
struct iwl_tfh_tfd *tfd;
- unsigned long flags2;
+ unsigned long flags;
copy_size = sizeof(struct iwl_cmd_header_wide);
cmd_size = sizeof(struct iwl_cmd_header_wide);
@@ -723,14 +156,14 @@
goto free_dup_buf;
}
- spin_lock_irqsave(&txq->lock, flags2);
+ spin_lock_irqsave(&txq->lock, flags);
- idx = iwl_pcie_get_cmd_index(txq, txq->write_ptr);
- tfd = iwl_pcie_get_tfd(trans, txq, txq->write_ptr);
+ idx = iwl_txq_get_cmd_index(txq, txq->write_ptr);
+ tfd = iwl_txq_get_tfd(trans, txq, txq->write_ptr);
memset(tfd, 0, sizeof(*tfd));
- if (iwl_queue_space(trans, txq) < ((cmd->flags & CMD_ASYNC) ? 2 : 1)) {
- spin_unlock_irqrestore(&txq->lock, flags2);
+ if (iwl_txq_space(trans, txq) < ((cmd->flags & CMD_ASYNC) ? 2 : 1)) {
+ spin_unlock_irqrestore(&txq->lock, flags);
IWL_ERR(trans, "No space in command queue\n");
iwl_op_mode_cmd_queue_full(trans->op_mode);
@@ -754,7 +187,7 @@
cpu_to_le16(cmd_size - sizeof(struct iwl_cmd_header_wide));
out_cmd->hdr_wide.reserved = 0;
out_cmd->hdr_wide.sequence =
- cpu_to_le16(QUEUE_TO_SEQ(trans_pcie->cmd_queue) |
+ cpu_to_le16(QUEUE_TO_SEQ(trans->txqs.cmd.q_id) |
INDEX_TO_SEQ(txq->write_ptr));
cmd_pos = sizeof(struct iwl_cmd_header_wide);
@@ -802,27 +235,27 @@
"Sending command %s (%.2x.%.2x), seq: 0x%04X, %d bytes at %d[%d]:%d\n",
iwl_get_cmd_string(trans, cmd->id), group_id,
out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
- cmd_size, txq->write_ptr, idx, trans_pcie->cmd_queue);
+ cmd_size, txq->write_ptr, idx, trans->txqs.cmd.q_id);
/* start the TFD with the minimum copy bytes */
tb0_size = min_t(int, copy_size, IWL_FIRST_TB_SIZE);
- memcpy(&txq->first_tb_bufs[idx], &out_cmd->hdr, tb0_size);
- iwl_pcie_gen2_set_tb(trans, tfd, iwl_pcie_get_first_tb_dma(txq, idx),
- tb0_size);
+ memcpy(&txq->first_tb_bufs[idx], out_cmd, tb0_size);
+ iwl_txq_gen2_set_tb(trans, tfd, iwl_txq_get_first_tb_dma(txq, idx),
+ tb0_size);
/* map first command fragment, if any remains */
if (copy_size > tb0_size) {
phys_addr = dma_map_single(trans->dev,
- ((u8 *)&out_cmd->hdr) + tb0_size,
+ (u8 *)out_cmd + tb0_size,
copy_size - tb0_size,
DMA_TO_DEVICE);
if (dma_mapping_error(trans->dev, phys_addr)) {
idx = -ENOMEM;
- iwl_pcie_gen2_tfd_unmap(trans, out_meta, tfd);
+ iwl_txq_gen2_tfd_unmap(trans, out_meta, tfd);
goto out;
}
- iwl_pcie_gen2_set_tb(trans, tfd, phys_addr,
- copy_size - tb0_size);
+ iwl_txq_gen2_set_tb(trans, tfd, phys_addr,
+ copy_size - tb0_size);
}
/* map the remaining (adjusted) nocopy/dup fragments */
@@ -840,16 +273,16 @@
cmdlen[i], DMA_TO_DEVICE);
if (dma_mapping_error(trans->dev, phys_addr)) {
idx = -ENOMEM;
- iwl_pcie_gen2_tfd_unmap(trans, out_meta, tfd);
+ iwl_txq_gen2_tfd_unmap(trans, out_meta, tfd);
goto out;
}
- iwl_pcie_gen2_set_tb(trans, tfd, phys_addr, cmdlen[i]);
+ iwl_txq_gen2_set_tb(trans, tfd, phys_addr, cmdlen[i]);
}
BUILD_BUG_ON(IWL_TFH_NUM_TBS > sizeof(out_meta->tbs) * BITS_PER_BYTE);
out_meta->flags = cmd->flags;
if (WARN_ON_ONCE(txq->entries[idx].free_buf))
- kzfree(txq->entries[idx].free_buf);
+ kfree_sensitive(txq->entries[idx].free_buf);
txq->entries[idx].free_buf = dup_buf;
trace_iwlwifi_dev_hcmd(trans->dev, cmd, cmd_size, &out_cmd->hdr_wide);
@@ -858,20 +291,14 @@
if (txq->read_ptr == txq->write_ptr && txq->wd_timeout)
mod_timer(&txq->stuck_timer, jiffies + txq->wd_timeout);
- spin_lock_irqsave(&trans_pcie->reg_lock, flags);
- if (!(cmd->flags & CMD_SEND_IN_IDLE) &&
- !trans_pcie->ref_cmd_in_flight) {
- trans_pcie->ref_cmd_in_flight = true;
- IWL_DEBUG_RPM(trans, "set ref_cmd_in_flight - ref\n");
- iwl_trans_ref(trans);
- }
+ spin_lock(&trans_pcie->reg_lock);
/* Increment and update queue's write index */
- txq->write_ptr = iwl_queue_inc_wrap(trans, txq->write_ptr);
- iwl_pcie_gen2_txq_inc_wr_ptr(trans, txq);
- spin_unlock_irqrestore(&trans_pcie->reg_lock, flags);
+ txq->write_ptr = iwl_txq_inc_wrap(trans, txq->write_ptr);
+ iwl_txq_inc_wr_ptr(trans, txq);
+ spin_unlock(&trans_pcie->reg_lock);
out:
- spin_unlock_irqrestore(&txq->lock, flags2);
+ spin_unlock_irqrestore(&txq->lock, flags);
free_dup_buf:
if (idx < 0)
kfree(dup_buf);
@@ -885,7 +312,7 @@
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
const char *cmd_str = iwl_get_cmd_string(trans, cmd->id);
- struct iwl_txq *txq = trans_pcie->txq[trans_pcie->cmd_queue];
+ struct iwl_txq *txq = trans->txqs.txq[trans->txqs.cmd.q_id];
int cmd_idx;
int ret;
@@ -897,16 +324,6 @@
return -EIO;
IWL_DEBUG_INFO(trans, "Setting HCMD_ACTIVE for command %s\n", cmd_str);
-
- if (pm_runtime_suspended(&trans_pcie->pci_dev->dev)) {
- ret = wait_event_timeout(trans_pcie->d0i3_waitq,
- pm_runtime_active(&trans_pcie->pci_dev->dev),
- msecs_to_jiffies(IWL_TRANS_IDLE_TIMEOUT));
- if (!ret) {
- IWL_ERR(trans, "Timeout exiting D0i3 before hcmd\n");
- return -ETIMEDOUT;
- }
- }
cmd_idx = iwl_pcie_gen2_enqueue_hcmd(trans, cmd);
if (cmd_idx < 0) {
@@ -933,9 +350,7 @@
cmd_str);
ret = -ETIMEDOUT;
- iwl_force_nmi(trans);
- iwl_trans_fw_error(trans);
-
+ iwl_trans_pcie_sync_nmi(trans);
goto cancel;
}
@@ -1008,287 +423,5 @@
}
return iwl_pcie_gen2_send_hcmd_sync(trans, cmd);
-}
-
-/*
- * iwl_pcie_gen2_txq_unmap - Unmap any remaining DMA mappings and free skb's
- */
-void iwl_pcie_gen2_txq_unmap(struct iwl_trans *trans, int txq_id)
-{
- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
- struct iwl_txq *txq = trans_pcie->txq[txq_id];
-
- spin_lock_bh(&txq->lock);
- while (txq->write_ptr != txq->read_ptr) {
- IWL_DEBUG_TX_REPLY(trans, "Q %d Free %d\n",
- txq_id, txq->read_ptr);
-
- if (txq_id != trans_pcie->cmd_queue) {
- int idx = iwl_pcie_get_cmd_index(txq, txq->read_ptr);
- struct sk_buff *skb = txq->entries[idx].skb;
-
- if (WARN_ON_ONCE(!skb))
- continue;
-
- iwl_pcie_free_tso_page(trans_pcie, skb);
- }
- iwl_pcie_gen2_free_tfd(trans, txq);
- txq->read_ptr = iwl_queue_inc_wrap(trans, txq->read_ptr);
-
- if (txq->read_ptr == txq->write_ptr) {
- unsigned long flags;
-
- spin_lock_irqsave(&trans_pcie->reg_lock, flags);
- if (txq_id != trans_pcie->cmd_queue) {
- IWL_DEBUG_RPM(trans, "Q %d - last tx freed\n",
- txq->id);
- iwl_trans_unref(trans);
- } else if (trans_pcie->ref_cmd_in_flight) {
- trans_pcie->ref_cmd_in_flight = false;
- IWL_DEBUG_RPM(trans,
- "clear ref_cmd_in_flight\n");
- iwl_trans_unref(trans);
- }
- spin_unlock_irqrestore(&trans_pcie->reg_lock, flags);
- }
- }
-
- while (!skb_queue_empty(&txq->overflow_q)) {
- struct sk_buff *skb = __skb_dequeue(&txq->overflow_q);
-
- iwl_op_mode_free_skb(trans->op_mode, skb);
- }
-
- spin_unlock_bh(&txq->lock);
-
- /* just in case - this queue may have been stopped */
- iwl_wake_queue(trans, txq);
-}
-
-static void iwl_pcie_gen2_txq_free_memory(struct iwl_trans *trans,
- struct iwl_txq *txq)
-{
- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
- struct device *dev = trans->dev;
-
- /* De-alloc circular buffer of TFDs */
- if (txq->tfds) {
- dma_free_coherent(dev,
- trans_pcie->tfd_size * txq->n_window,
- txq->tfds, txq->dma_addr);
- dma_free_coherent(dev,
- sizeof(*txq->first_tb_bufs) * txq->n_window,
- txq->first_tb_bufs, txq->first_tb_dma);
- }
-
- kfree(txq->entries);
- iwl_pcie_free_dma_ptr(trans, &txq->bc_tbl);
- kfree(txq);
-}
-
-/*
- * iwl_pcie_txq_free - Deallocate DMA queue.
- * @txq: Transmit queue to deallocate.
- *
- * Empty queue by removing and destroying all BD's.
- * Free all buffers.
- * 0-fill, but do not free "txq" descriptor structure.
- */
-static void iwl_pcie_gen2_txq_free(struct iwl_trans *trans, int txq_id)
-{
- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
- struct iwl_txq *txq = trans_pcie->txq[txq_id];
- int i;
-
- if (WARN_ON(!txq))
- return;
-
- iwl_pcie_gen2_txq_unmap(trans, txq_id);
-
- /* De-alloc array of command/tx buffers */
- if (txq_id == trans_pcie->cmd_queue)
- for (i = 0; i < txq->n_window; i++) {
- kzfree(txq->entries[i].cmd);
- kzfree(txq->entries[i].free_buf);
- }
- del_timer_sync(&txq->stuck_timer);
-
- iwl_pcie_gen2_txq_free_memory(trans, txq);
-
- trans_pcie->txq[txq_id] = NULL;
-
- clear_bit(txq_id, trans_pcie->queue_used);
-}
-
-int iwl_trans_pcie_dyn_txq_alloc(struct iwl_trans *trans,
- struct iwl_tx_queue_cfg_cmd *cmd,
- int cmd_id, int size,
- unsigned int timeout)
-{
- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
- struct iwl_tx_queue_cfg_rsp *rsp;
- struct iwl_txq *txq;
- struct iwl_host_cmd hcmd = {
- .id = cmd_id,
- .len = { sizeof(*cmd) },
- .data = { cmd, },
- .flags = CMD_WANT_SKB,
- };
- int ret, qid;
- u32 wr_ptr;
-
- txq = kzalloc(sizeof(*txq), GFP_KERNEL);
- if (!txq)
- return -ENOMEM;
- ret = iwl_pcie_alloc_dma_ptr(trans, &txq->bc_tbl,
- (trans->cfg->device_family >=
- IWL_DEVICE_FAMILY_22560) ?
- sizeof(struct iwl_gen3_bc_tbl) :
- sizeof(struct iwlagn_scd_bc_tbl));
- if (ret) {
- IWL_ERR(trans, "Scheduler BC Table allocation failed\n");
- kfree(txq);
- return -ENOMEM;
- }
-
- ret = iwl_pcie_txq_alloc(trans, txq, size, false);
- if (ret) {
- IWL_ERR(trans, "Tx queue alloc failed\n");
- goto error;
- }
- ret = iwl_pcie_txq_init(trans, txq, size, false);
- if (ret) {
- IWL_ERR(trans, "Tx queue init failed\n");
- goto error;
- }
-
- txq->wd_timeout = msecs_to_jiffies(timeout);
-
- cmd->tfdq_addr = cpu_to_le64(txq->dma_addr);
- cmd->byte_cnt_addr = cpu_to_le64(txq->bc_tbl.dma);
- cmd->cb_size = cpu_to_le32(TFD_QUEUE_CB_SIZE(size));
-
- ret = iwl_trans_send_cmd(trans, &hcmd);
- if (ret)
- goto error;
-
- if (WARN_ON(iwl_rx_packet_payload_len(hcmd.resp_pkt) != sizeof(*rsp))) {
- ret = -EINVAL;
- goto error_free_resp;
- }
-
- rsp = (void *)hcmd.resp_pkt->data;
- qid = le16_to_cpu(rsp->queue_number);
- wr_ptr = le16_to_cpu(rsp->write_pointer);
-
- if (qid >= ARRAY_SIZE(trans_pcie->txq)) {
- WARN_ONCE(1, "queue index %d unsupported", qid);
- ret = -EIO;
- goto error_free_resp;
- }
-
- if (test_and_set_bit(qid, trans_pcie->queue_used)) {
- WARN_ONCE(1, "queue %d already used", qid);
- ret = -EIO;
- goto error_free_resp;
- }
-
- txq->id = qid;
- trans_pcie->txq[qid] = txq;
- wr_ptr &= (trans->cfg->base_params->max_tfd_queue_size - 1);
-
- /* Place first TFD at index corresponding to start sequence number */
- txq->read_ptr = wr_ptr;
- txq->write_ptr = wr_ptr;
- iwl_write_direct32(trans, HBUS_TARG_WRPTR,
- (txq->write_ptr) | (qid << 16));
- IWL_DEBUG_TX_QUEUES(trans, "Activate queue %d\n", qid);
-
- iwl_free_resp(&hcmd);
- return qid;
-
-error_free_resp:
- iwl_free_resp(&hcmd);
-error:
- iwl_pcie_gen2_txq_free_memory(trans, txq);
- return ret;
-}
-
-void iwl_trans_pcie_dyn_txq_free(struct iwl_trans *trans, int queue)
-{
- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
-
- /*
- * Upon HW Rfkill - we stop the device, and then stop the queues
- * in the op_mode. Just for the sake of the simplicity of the op_mode,
- * allow the op_mode to call txq_disable after it already called
- * stop_device.
- */
- if (!test_and_clear_bit(queue, trans_pcie->queue_used)) {
- WARN_ONCE(test_bit(STATUS_DEVICE_ENABLED, &trans->status),
- "queue %d not used", queue);
- return;
- }
-
- iwl_pcie_gen2_txq_unmap(trans, queue);
-
- iwl_pcie_gen2_txq_free_memory(trans, trans_pcie->txq[queue]);
- trans_pcie->txq[queue] = NULL;
-
- IWL_DEBUG_TX_QUEUES(trans, "Deactivate queue %d\n", queue);
-}
-
-void iwl_pcie_gen2_tx_free(struct iwl_trans *trans)
-{
- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
- int i;
-
- memset(trans_pcie->queue_used, 0, sizeof(trans_pcie->queue_used));
-
- /* Free all TX queues */
- for (i = 0; i < ARRAY_SIZE(trans_pcie->txq); i++) {
- if (!trans_pcie->txq[i])
- continue;
-
- iwl_pcie_gen2_txq_free(trans, i);
- }
-}
-
-int iwl_pcie_gen2_tx_init(struct iwl_trans *trans)
-{
- struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
- struct iwl_txq *cmd_queue;
- int txq_id = trans_pcie->cmd_queue, ret;
-
- /* alloc and init the command queue */
- if (!trans_pcie->txq[txq_id]) {
- cmd_queue = kzalloc(sizeof(*cmd_queue), GFP_KERNEL);
- if (!cmd_queue) {
- IWL_ERR(trans, "Not enough memory for command queue\n");
- return -ENOMEM;
- }
- trans_pcie->txq[txq_id] = cmd_queue;
- ret = iwl_pcie_txq_alloc(trans, cmd_queue, TFD_CMD_SLOTS, true);
- if (ret) {
- IWL_ERR(trans, "Tx %d queue init failed\n", txq_id);
- goto error;
- }
- } else {
- cmd_queue = trans_pcie->txq[txq_id];
- }
-
- ret = iwl_pcie_txq_init(trans, cmd_queue, TFD_CMD_SLOTS, true);
- if (ret) {
- IWL_ERR(trans, "Tx %d queue alloc failed\n", txq_id);
- goto error;
- }
- trans_pcie->txq[txq_id]->id = txq_id;
- set_bit(txq_id, trans_pcie->queue_used);
-
- return 0;
-
-error:
- iwl_pcie_gen2_tx_free(trans);
- return ret;
}
--
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