diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/iwl-trans.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/iwl-trans.c | 835 |
1 files changed, 726 insertions, 109 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-trans.c b/drivers/net/wireless/intel/iwlwifi/iwl-trans.c index 784bdd0ed233..cc8a84018f70 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-trans.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-trans.c @@ -1,115 +1,301 @@ -/****************************************************************************** - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2015 Intel Mobile Communications GmbH - * - * 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 - * 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. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, - * USA - * - * The full GNU General Public License is included in this distribution - * in the file called COPYING. - * - * Contact Information: - * Intel Linux Wireless <linuxwifi@intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - * BSD LICENSE - * - * Copyright(c) 2015 Intel Mobile Communications GmbH - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - *****************************************************************************/ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause +/* + * Copyright (C) 2015 Intel Mobile Communications GmbH + * Copyright (C) 2016-2017 Intel Deutschland GmbH + * Copyright (C) 2019-2021, 2023-2025 Intel Corporation + */ #include <linux/kernel.h> #include <linux/bsearch.h> +#include <linux/list.h> +#include "fw/api/tx.h" #include "iwl-trans.h" #include "iwl-drv.h" #include "iwl-fh.h" +#include <linux/dmapool.h> +#include "fw/api/commands.h" +#include "pcie/gen1_2/internal.h" +#include "pcie/iwl-context-info-v2.h" + +struct iwl_trans_dev_restart_data { + struct list_head list; + unsigned int restart_count; + time64_t last_error; + bool backoff; + char name[]; +}; + +static LIST_HEAD(restart_data_list); +static DEFINE_SPINLOCK(restart_data_lock); + +static struct iwl_trans_dev_restart_data * +iwl_trans_get_restart_data(struct device *dev) +{ + struct iwl_trans_dev_restart_data *tmp, *data = NULL; + const char *name = dev_name(dev); + + spin_lock(&restart_data_lock); + list_for_each_entry(tmp, &restart_data_list, list) { + if (strcmp(tmp->name, name)) + continue; + data = tmp; + break; + } + spin_unlock(&restart_data_lock); + + if (data) + return data; + + data = kzalloc(struct_size(data, name, strlen(name) + 1), GFP_ATOMIC); + if (!data) + return NULL; + + strcpy(data->name, name); + spin_lock(&restart_data_lock); + list_add_tail(&data->list, &restart_data_list); + spin_unlock(&restart_data_lock); + + return data; +} + +static void iwl_trans_inc_restart_count(struct device *dev) +{ + struct iwl_trans_dev_restart_data *data; + + data = iwl_trans_get_restart_data(dev); + if (data) { + data->last_error = ktime_get_boottime_seconds(); + data->restart_count++; + } +} + +void iwl_trans_free_restart_list(void) +{ + struct iwl_trans_dev_restart_data *tmp; + + while ((tmp = list_first_entry_or_null(&restart_data_list, + typeof(*tmp), list))) { + list_del(&tmp->list); + kfree(tmp); + } +} + +struct iwl_trans_reprobe { + struct device *dev; + struct delayed_work work; +}; + +static void iwl_trans_reprobe_wk(struct work_struct *wk) +{ + struct iwl_trans_reprobe *reprobe; + + reprobe = container_of(wk, typeof(*reprobe), work.work); + + if (device_reprobe(reprobe->dev)) + dev_err(reprobe->dev, "reprobe failed!\n"); + put_device(reprobe->dev); + kfree(reprobe); + module_put(THIS_MODULE); +} + +static void iwl_trans_schedule_reprobe(struct iwl_trans *trans, + unsigned int delay_ms) +{ + struct iwl_trans_reprobe *reprobe; + + /* + * get a module reference to avoid doing this while unloading + * anyway and to avoid scheduling a work with code that's + * being removed. + */ + if (!try_module_get(THIS_MODULE)) { + IWL_ERR(trans, "Module is being unloaded - abort\n"); + return; + } + + reprobe = kzalloc(sizeof(*reprobe), GFP_KERNEL); + if (!reprobe) { + module_put(THIS_MODULE); + return; + } + reprobe->dev = get_device(trans->dev); + INIT_DELAYED_WORK(&reprobe->work, iwl_trans_reprobe_wk); + schedule_delayed_work(&reprobe->work, msecs_to_jiffies(delay_ms)); +} + +#define IWL_TRANS_RESET_OK_TIME 7 /* seconds */ + +static enum iwl_reset_mode +iwl_trans_determine_restart_mode(struct iwl_trans *trans) +{ + struct iwl_trans_dev_restart_data *data; + enum iwl_reset_mode min_mode = 0; + unsigned int index; + static const enum iwl_reset_mode escalation_list_old[] = { + IWL_RESET_MODE_SW_RESET, + IWL_RESET_MODE_REPROBE, + IWL_RESET_MODE_REPROBE, + IWL_RESET_MODE_FUNC_RESET, + IWL_RESET_MODE_PROD_RESET, + }; + static const enum iwl_reset_mode escalation_list_sc[] = { + IWL_RESET_MODE_SW_RESET, + IWL_RESET_MODE_REPROBE, + IWL_RESET_MODE_REPROBE, + IWL_RESET_MODE_FUNC_RESET, + IWL_RESET_MODE_TOP_RESET, + IWL_RESET_MODE_PROD_RESET, + IWL_RESET_MODE_TOP_RESET, + IWL_RESET_MODE_PROD_RESET, + IWL_RESET_MODE_TOP_RESET, + IWL_RESET_MODE_PROD_RESET, + }; + const enum iwl_reset_mode *escalation_list; + size_t escalation_list_size; + + /* used by TOP fatal error/TOP reset */ + if (trans->restart.mode.type == IWL_ERR_TYPE_TOP_RESET_FAILED) + return IWL_RESET_MODE_PROD_RESET; + + if (trans->request_top_reset) { + trans->request_top_reset = 0; + if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_SC) + return IWL_RESET_MODE_TOP_RESET; + return IWL_RESET_MODE_PROD_RESET; + } + + if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_SC) { + escalation_list = escalation_list_sc; + escalation_list_size = ARRAY_SIZE(escalation_list_sc); + } else { + escalation_list = escalation_list_old; + escalation_list_size = ARRAY_SIZE(escalation_list_old); + } + + if (trans->restart.during_reset) + min_mode = IWL_RESET_MODE_REPROBE; + + data = iwl_trans_get_restart_data(trans->dev); + if (!data) + return min_mode; + + if (!data->backoff && + ktime_get_boottime_seconds() - data->last_error >= + IWL_TRANS_RESET_OK_TIME) + data->restart_count = 0; + + index = data->restart_count; + if (index >= escalation_list_size) { + index = escalation_list_size - 1; + if (!data->backoff) { + data->backoff = true; + return IWL_RESET_MODE_BACKOFF; + } + data->backoff = false; + } + + return max(min_mode, escalation_list[index]); +} + +#define IWL_TRANS_TOP_FOLLOWER_WAIT 180 /* ms */ + +#define IWL_TRANS_RESET_DELAY (HZ * 60) + +static void iwl_trans_restart_wk(struct work_struct *wk) +{ + struct iwl_trans *trans = container_of(wk, typeof(*trans), + restart.wk.work); + enum iwl_reset_mode mode; + + if (trans->restart.mode.type == IWL_ERR_TYPE_TOP_RESET_BY_BT) { + iwl_trans_schedule_reprobe(trans, IWL_TRANS_TOP_FOLLOWER_WAIT); + return; + } + + if (!trans->op_mode) + return; + + /* might have been scheduled before marked as dead, re-check */ + if (test_bit(STATUS_TRANS_DEAD, &trans->status)) + return; + + iwl_op_mode_dump_error(trans->op_mode, &trans->restart.mode); + + /* + * If the opmode stopped the device while we were trying to dump and + * reset, then we'll have done the dump already (synchronized by the + * opmode lock that it will acquire in iwl_op_mode_dump_error()) and + * managed that via trans->restart.mode. + * Additionally, make sure that in such a case we won't attempt to do + * any resets now, since it's no longer requested. + */ + if (!test_and_clear_bit(STATUS_RESET_PENDING, &trans->status)) + return; + + if (!iwlwifi_mod_params.fw_restart) + return; + + mode = iwl_trans_determine_restart_mode(trans); + if (mode == IWL_RESET_MODE_BACKOFF) { + IWL_ERR(trans, "Too many device errors - delay next reset\n"); + queue_delayed_work(system_unbound_wq, &trans->restart.wk, + IWL_TRANS_RESET_DELAY); + return; + } + + iwl_trans_inc_restart_count(trans->dev); + + switch (mode) { + case IWL_RESET_MODE_TOP_RESET: + trans->do_top_reset = 1; + IWL_ERR(trans, "Device error - TOP reset\n"); + fallthrough; + case IWL_RESET_MODE_SW_RESET: + if (mode == IWL_RESET_MODE_SW_RESET) + IWL_ERR(trans, "Device error - SW reset\n"); + iwl_trans_opmode_sw_reset(trans, trans->restart.mode.type); + break; + case IWL_RESET_MODE_REPROBE: + IWL_ERR(trans, "Device error - reprobe!\n"); + + iwl_trans_schedule_reprobe(trans, 0); + break; + default: + iwl_trans_pcie_reset(trans, mode); + break; + } +} struct iwl_trans *iwl_trans_alloc(unsigned int priv_size, struct device *dev, - const struct iwl_cfg *cfg, - const struct iwl_trans_ops *ops) + const struct iwl_mac_cfg *mac_cfg) { struct iwl_trans *trans; #ifdef CONFIG_LOCKDEP - static struct lock_class_key __key; + static struct lock_class_key __sync_cmd_key; #endif trans = devm_kzalloc(dev, sizeof(*trans) + priv_size, GFP_KERNEL); if (!trans) return NULL; + trans->mac_cfg = mac_cfg; + #ifdef CONFIG_LOCKDEP lockdep_init_map(&trans->sync_cmd_lockdep_map, "sync_cmd_lockdep_map", - &__key, 0); + &__sync_cmd_key, 0); #endif trans->dev = dev; - trans->cfg = cfg; - trans->ops = ops; - trans->num_rx_queues = 1; - - snprintf(trans->dev_cmd_pool_name, sizeof(trans->dev_cmd_pool_name), - "iwl_cmd_pool:%s", dev_name(trans->dev)); - trans->dev_cmd_pool = - kmem_cache_create(trans->dev_cmd_pool_name, - sizeof(struct iwl_device_cmd), - sizeof(void *), - SLAB_HWCACHE_ALIGN, - NULL); - if (!trans->dev_cmd_pool) - return NULL; - WARN_ON(!ops->wait_txq_empty && !ops->wait_tx_queues_empty); + INIT_DELAYED_WORK(&trans->restart.wk, iwl_trans_restart_wk); return trans; } void iwl_trans_free(struct iwl_trans *trans) { - kmem_cache_destroy(trans->dev_cmd_pool); + cancel_delayed_work_sync(&trans->restart.wk); } int iwl_trans_send_cmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd) @@ -123,22 +309,19 @@ int iwl_trans_send_cmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd) if (unlikely(test_bit(STATUS_FW_ERROR, &trans->status))) return -EIO; - if (unlikely(trans->state != IWL_TRANS_FW_ALIVE)) { - IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state); + if (WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, + "bad state = %d\n", trans->state)) return -EIO; - } - - if (WARN_ON((cmd->flags & CMD_WANT_ASYNC_CALLBACK) && - !(cmd->flags & CMD_ASYNC))) - return -EINVAL; if (!(cmd->flags & CMD_ASYNC)) lock_map_acquire_read(&trans->sync_cmd_lockdep_map); - if (trans->wide_cmd_header && !iwl_cmd_groupid(cmd->id)) - cmd->id = DEF_ID(cmd->id); + if (trans->conf.wide_cmd_header && !iwl_cmd_groupid(cmd->id)) { + if (cmd->id != REPLY_ERROR) + cmd->id = DEF_ID(cmd->id); + } - ret = trans->ops->send_cmd(trans, cmd); + ret = iwl_trans_pcie_send_hcmd(trans, cmd); if (!(cmd->flags & CMD_ASYNC)) lock_map_release(&trans->sync_cmd_lockdep_map); @@ -150,6 +333,19 @@ int iwl_trans_send_cmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd) } IWL_EXPORT_SYMBOL(iwl_trans_send_cmd); +struct iwl_device_tx_cmd *iwl_trans_alloc_tx_cmd(struct iwl_trans *trans) +{ + return iwl_pcie_gen1_2_alloc_tx_cmd(trans); +} +IWL_EXPORT_SYMBOL(iwl_trans_alloc_tx_cmd); + +void iwl_trans_free_tx_cmd(struct iwl_trans *trans, + struct iwl_device_tx_cmd *dev_cmd) +{ + iwl_pcie_gen1_2_free_tx_cmd(trans, dev_cmd); +} +IWL_EXPORT_SYMBOL(iwl_trans_free_tx_cmd); + /* Comparator for struct iwl_hcmd_names. * Used in the binary search over a list of host commands. * @@ -161,10 +357,10 @@ IWL_EXPORT_SYMBOL(iwl_trans_send_cmd); static int iwl_hcmd_names_cmp(const void *key, const void *elt) { const struct iwl_hcmd_names *name = elt; - u8 cmd1 = *(u8 *)key; + const u8 *cmd1 = key; u8 cmd2 = name->cmd_id; - return (cmd1 - cmd2); + return (*cmd1 - cmd2); } const char *iwl_get_cmd_string(struct iwl_trans *trans, u32 id) @@ -177,11 +373,12 @@ const char *iwl_get_cmd_string(struct iwl_trans *trans, u32 id) grp = iwl_cmd_groupid(id); cmd = iwl_cmd_opcode(id); - if (!trans->command_groups || grp >= trans->command_groups_size || - !trans->command_groups[grp].arr) + if (!trans->conf.command_groups || + grp >= trans->conf.command_groups_size || + !trans->conf.command_groups[grp].arr) return "UNKNOWN"; - arr = &trans->command_groups[grp]; + arr = &trans->conf.command_groups[grp]; ret = bsearch(&cmd, arr->arr, arr->size, size, iwl_hcmd_names_cmp); if (!ret) return "UNKNOWN"; @@ -189,19 +386,439 @@ const char *iwl_get_cmd_string(struct iwl_trans *trans, u32 id) } IWL_EXPORT_SYMBOL(iwl_get_cmd_string); -int iwl_cmd_groups_verify_sorted(const struct iwl_trans_config *trans) +void iwl_trans_op_mode_enter(struct iwl_trans *trans, + struct iwl_op_mode *op_mode) { - int i, j; - const struct iwl_hcmd_arr *arr; + trans->op_mode = op_mode; - for (i = 0; i < trans->command_groups_size; i++) { - arr = &trans->command_groups[i]; - if (!arr->arr) - continue; - for (j = 0; j < arr->size - 1; j++) - if (arr->arr[j].cmd_id > arr->arr[j + 1].cmd_id) - return -1; + if (WARN_ON(trans->conf.n_no_reclaim_cmds > MAX_NO_RECLAIM_CMDS)) + trans->conf.n_no_reclaim_cmds = + ARRAY_SIZE(trans->conf.no_reclaim_cmds); + + WARN_ON_ONCE(!trans->conf.rx_mpdu_cmd); + + iwl_pcie_gen1_2_op_mode_enter(trans); +} +IWL_EXPORT_SYMBOL(iwl_trans_op_mode_enter); + +int iwl_trans_start_hw(struct iwl_trans *trans) +{ + might_sleep(); + + clear_bit(STATUS_TRANS_RESET_IN_PROGRESS, &trans->status); + + return iwl_trans_pcie_start_hw(trans); +} +IWL_EXPORT_SYMBOL(iwl_trans_start_hw); + +void iwl_trans_op_mode_leave(struct iwl_trans *trans) +{ + might_sleep(); + + if (trans->mac_cfg->gen2) + iwl_trans_pcie_gen2_op_mode_leave(trans); + else + iwl_trans_pcie_op_mode_leave(trans); + + cancel_delayed_work_sync(&trans->restart.wk); + + trans->op_mode = NULL; + memset(&trans->conf, 0, sizeof(trans->conf)); + + trans->state = IWL_TRANS_NO_FW; +} +IWL_EXPORT_SYMBOL(iwl_trans_op_mode_leave); + +void iwl_trans_write8(struct iwl_trans *trans, u32 ofs, u8 val) +{ + iwl_trans_pcie_write8(trans, ofs, val); +} + +void iwl_trans_write32(struct iwl_trans *trans, u32 ofs, u32 val) +{ + iwl_trans_pcie_write32(trans, ofs, val); +} + +u32 iwl_trans_read32(struct iwl_trans *trans, u32 ofs) +{ + return iwl_trans_pcie_read32(trans, ofs); +} + +u32 iwl_trans_read_prph(struct iwl_trans *trans, u32 ofs) +{ + return iwl_trans_pcie_read_prph(trans, ofs); +} + +void iwl_trans_write_prph(struct iwl_trans *trans, u32 ofs, u32 val) +{ + return iwl_trans_pcie_write_prph(trans, ofs, val); +} + +int iwl_trans_read_mem(struct iwl_trans *trans, u32 addr, + void *buf, int dwords) +{ + return iwl_trans_pcie_read_mem(trans, addr, buf, dwords); +} +IWL_EXPORT_SYMBOL(iwl_trans_read_mem); + +int iwl_trans_write_mem(struct iwl_trans *trans, u32 addr, + const void *buf, int dwords) +{ + int offs, ret = 0; + const u32 *vals = buf; + + if (iwl_trans_grab_nic_access(trans)) { + iwl_write32(trans, HBUS_TARG_MEM_WADDR, addr); + for (offs = 0; offs < dwords; offs++) + iwl_write32(trans, HBUS_TARG_MEM_WDAT, + vals ? vals[offs] : 0); + iwl_trans_release_nic_access(trans); + } else { + ret = -EBUSY; } - return 0; + return ret; +} +IWL_EXPORT_SYMBOL(iwl_trans_write_mem); + +void iwl_trans_set_pmi(struct iwl_trans *trans, bool state) +{ + if (state) + set_bit(STATUS_TPOWER_PMI, &trans->status); + else + clear_bit(STATUS_TPOWER_PMI, &trans->status); +} +IWL_EXPORT_SYMBOL(iwl_trans_set_pmi); + +int iwl_trans_sw_reset(struct iwl_trans *trans) +{ + return iwl_trans_pcie_sw_reset(trans, true); +} + +struct iwl_trans_dump_data * +iwl_trans_dump_data(struct iwl_trans *trans, u32 dump_mask, + const struct iwl_dump_sanitize_ops *sanitize_ops, + void *sanitize_ctx) +{ + return iwl_trans_pcie_dump_data(trans, dump_mask, + sanitize_ops, sanitize_ctx); +} + +int iwl_trans_d3_suspend(struct iwl_trans *trans, bool reset) +{ + might_sleep(); + + return iwl_trans_pcie_d3_suspend(trans, reset); +} +IWL_EXPORT_SYMBOL(iwl_trans_d3_suspend); + +int iwl_trans_d3_resume(struct iwl_trans *trans, bool reset) +{ + might_sleep(); + + return iwl_trans_pcie_d3_resume(trans, reset); +} +IWL_EXPORT_SYMBOL(iwl_trans_d3_resume); + +void iwl_trans_interrupts(struct iwl_trans *trans, bool enable) +{ + iwl_trans_pci_interrupts(trans, enable); +} + +void iwl_trans_sync_nmi(struct iwl_trans *trans) +{ + iwl_trans_pcie_sync_nmi(trans); +} + +int iwl_trans_write_imr_mem(struct iwl_trans *trans, u32 dst_addr, + u64 src_addr, u32 byte_cnt) +{ + return iwl_trans_pcie_copy_imr(trans, dst_addr, src_addr, byte_cnt); +} + +void iwl_trans_set_bits_mask(struct iwl_trans *trans, u32 reg, + u32 mask, u32 value) +{ + iwl_trans_pcie_set_bits_mask(trans, reg, mask, value); +} +IWL_EXPORT_SYMBOL(iwl_trans_set_bits_mask); + +int iwl_trans_read_config32(struct iwl_trans *trans, u32 ofs, + u32 *val) +{ + return iwl_trans_pcie_read_config32(trans, ofs, val); +} + +bool _iwl_trans_grab_nic_access(struct iwl_trans *trans) +{ + return iwl_trans_pcie_grab_nic_access(trans); +} +IWL_EXPORT_SYMBOL(_iwl_trans_grab_nic_access); + +void __releases(nic_access) +iwl_trans_release_nic_access(struct iwl_trans *trans) +{ + iwl_trans_pcie_release_nic_access(trans); +} +IWL_EXPORT_SYMBOL(iwl_trans_release_nic_access); + +void iwl_trans_fw_alive(struct iwl_trans *trans) +{ + might_sleep(); + + trans->state = IWL_TRANS_FW_ALIVE; + + if (trans->mac_cfg->gen2) + iwl_trans_pcie_gen2_fw_alive(trans); + else + iwl_trans_pcie_fw_alive(trans); +} +IWL_EXPORT_SYMBOL(iwl_trans_fw_alive); + +int iwl_trans_start_fw(struct iwl_trans *trans, const struct iwl_fw *fw, + enum iwl_ucode_type ucode_type, bool run_in_rfkill) +{ + const struct fw_img *img; + int ret; + + might_sleep(); + + img = iwl_get_ucode_image(fw, ucode_type); + if (!img) + return -EINVAL; + + clear_bit(STATUS_FW_ERROR, &trans->status); + + if (trans->mac_cfg->gen2) + ret = iwl_trans_pcie_gen2_start_fw(trans, fw, img, + run_in_rfkill); + else + ret = iwl_trans_pcie_start_fw(trans, fw, img, + run_in_rfkill); + + if (ret == 0) + trans->state = IWL_TRANS_FW_STARTED; + + return ret; +} +IWL_EXPORT_SYMBOL(iwl_trans_start_fw); + +void iwl_trans_stop_device(struct iwl_trans *trans) +{ + might_sleep(); + + /* + * See also the comment in iwl_trans_restart_wk(). + * + * When the opmode stops the device while a reset is pending, the + * worker (iwl_trans_restart_wk) might not have run yet or, more + * likely, will be blocked on the opmode lock. Due to the locking, + * we can't just flush the worker. + * + * If this is the case, then the test_and_clear_bit() ensures that + * the worker won't attempt to do anything after the stop. + * + * The trans->restart.mode is a handshake with the opmode, we set + * the context there to ABORT so that when the worker can finally + * acquire the lock in the opmode, the code there won't attempt to + * do any dumps. Since we'd really like to have the dump though, + * also do it inline here (with the opmode locks already held), + * but use a separate mode struct to avoid races. + */ + if (test_and_clear_bit(STATUS_RESET_PENDING, &trans->status)) { + struct iwl_fw_error_dump_mode mode; + + mode = trans->restart.mode; + mode.context = IWL_ERR_CONTEXT_FROM_OPMODE; + trans->restart.mode.context = IWL_ERR_CONTEXT_ABORT; + + iwl_op_mode_dump_error(trans->op_mode, &mode); + } + + if (trans->mac_cfg->gen2) + iwl_trans_pcie_gen2_stop_device(trans); + else + iwl_trans_pcie_stop_device(trans); + + trans->state = IWL_TRANS_NO_FW; +} +IWL_EXPORT_SYMBOL(iwl_trans_stop_device); + +int iwl_trans_tx(struct iwl_trans *trans, struct sk_buff *skb, + struct iwl_device_tx_cmd *dev_cmd, int queue) +{ + if (unlikely(test_bit(STATUS_FW_ERROR, &trans->status))) + return -EIO; + + if (WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, + "bad state = %d\n", trans->state)) + return -EIO; + + if (trans->mac_cfg->gen2) + return iwl_txq_gen2_tx(trans, skb, dev_cmd, queue); + + return iwl_trans_pcie_tx(trans, skb, dev_cmd, queue); +} +IWL_EXPORT_SYMBOL(iwl_trans_tx); + +void iwl_trans_reclaim(struct iwl_trans *trans, int queue, int ssn, + struct sk_buff_head *skbs, bool is_flush) +{ + if (unlikely(test_bit(STATUS_FW_ERROR, &trans->status))) + return; + + if (WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, + "bad state = %d\n", trans->state)) + return; + + iwl_pcie_reclaim(trans, queue, ssn, skbs, is_flush); +} +IWL_EXPORT_SYMBOL(iwl_trans_reclaim); + +void iwl_trans_txq_disable(struct iwl_trans *trans, int queue, + bool configure_scd) +{ + iwl_trans_pcie_txq_disable(trans, queue, configure_scd); +} +IWL_EXPORT_SYMBOL(iwl_trans_txq_disable); + +bool iwl_trans_txq_enable_cfg(struct iwl_trans *trans, int queue, u16 ssn, + const struct iwl_trans_txq_scd_cfg *cfg, + unsigned int queue_wdg_timeout) +{ + might_sleep(); + + if (WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, + "bad state = %d\n", trans->state)) + return false; + + return iwl_trans_pcie_txq_enable(trans, queue, ssn, + cfg, queue_wdg_timeout); +} +IWL_EXPORT_SYMBOL(iwl_trans_txq_enable_cfg); + +int iwl_trans_wait_txq_empty(struct iwl_trans *trans, int queue) +{ + if (unlikely(test_bit(STATUS_FW_ERROR, &trans->status))) + return -EIO; + + if (WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, + "bad state = %d\n", trans->state)) + return -EIO; + + return iwl_trans_pcie_wait_txq_empty(trans, queue); +} +IWL_EXPORT_SYMBOL(iwl_trans_wait_txq_empty); + +int iwl_trans_wait_tx_queues_empty(struct iwl_trans *trans, u32 txqs) +{ + if (WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, + "bad state = %d\n", trans->state)) + return -EIO; + + return iwl_trans_pcie_wait_txqs_empty(trans, txqs); +} +IWL_EXPORT_SYMBOL(iwl_trans_wait_tx_queues_empty); + +void iwl_trans_freeze_txq_timer(struct iwl_trans *trans, + unsigned long txqs, bool freeze) +{ + if (WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, + "bad state = %d\n", trans->state)) + return; + + iwl_pcie_freeze_txq_timer(trans, txqs, freeze); +} +IWL_EXPORT_SYMBOL(iwl_trans_freeze_txq_timer); + +void iwl_trans_txq_set_shared_mode(struct iwl_trans *trans, + int txq_id, bool shared_mode) +{ + iwl_trans_pcie_txq_set_shared_mode(trans, txq_id, shared_mode); +} +IWL_EXPORT_SYMBOL(iwl_trans_txq_set_shared_mode); + +#ifdef CONFIG_IWLWIFI_DEBUGFS +void iwl_trans_debugfs_cleanup(struct iwl_trans *trans) +{ + iwl_trans_pcie_debugfs_cleanup(trans); +} +#endif + +void iwl_trans_set_q_ptrs(struct iwl_trans *trans, int queue, int ptr) +{ + if (WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, + "bad state = %d\n", trans->state)) + return; + + iwl_pcie_set_q_ptrs(trans, queue, ptr); +} +IWL_EXPORT_SYMBOL(iwl_trans_set_q_ptrs); + +int iwl_trans_txq_alloc(struct iwl_trans *trans, u32 flags, u32 sta_mask, + u8 tid, int size, unsigned int wdg_timeout) +{ + might_sleep(); + + if (WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, + "bad state = %d\n", trans->state)) + return -EIO; + + return iwl_txq_dyn_alloc(trans, flags, sta_mask, tid, + size, wdg_timeout); +} +IWL_EXPORT_SYMBOL(iwl_trans_txq_alloc); + +void iwl_trans_txq_free(struct iwl_trans *trans, int queue) +{ + iwl_txq_dyn_free(trans, queue); +} +IWL_EXPORT_SYMBOL(iwl_trans_txq_free); + +int iwl_trans_get_rxq_dma_data(struct iwl_trans *trans, int queue, + struct iwl_trans_rxq_dma_data *data) +{ + return iwl_trans_pcie_rxq_dma_data(trans, queue, data); +} + +int iwl_trans_load_pnvm(struct iwl_trans *trans, + const struct iwl_pnvm_image *pnvm_data, + const struct iwl_ucode_capabilities *capa) +{ + return iwl_trans_pcie_ctx_info_v2_load_pnvm(trans, pnvm_data, capa); +} +IWL_EXPORT_SYMBOL(iwl_trans_load_pnvm); + +void iwl_trans_set_pnvm(struct iwl_trans *trans, + const struct iwl_ucode_capabilities *capa) +{ + iwl_trans_pcie_ctx_info_v2_set_pnvm(trans, capa); +} + +int iwl_trans_load_reduce_power(struct iwl_trans *trans, + const struct iwl_pnvm_image *payloads, + const struct iwl_ucode_capabilities *capa) +{ + return iwl_trans_pcie_ctx_info_v2_load_reduce_power(trans, payloads, + capa); +} + +void iwl_trans_set_reduce_power(struct iwl_trans *trans, + const struct iwl_ucode_capabilities *capa) +{ + iwl_trans_pcie_ctx_info_v2_set_reduce_power(trans, capa); +} + +bool iwl_trans_is_pm_supported(struct iwl_trans *trans) +{ + if (WARN_ON(trans->mac_cfg->gen2)) + return false; + + return iwl_pcie_gen1_is_pm_supported(trans); +} +IWL_EXPORT_SYMBOL(iwl_trans_is_pm_supported); + +bool iwl_trans_is_ltr_enabled(struct iwl_trans *trans) +{ + return iwl_pcie_gen1_2_is_ltr_enabled(trans); } -IWL_EXPORT_SYMBOL(iwl_cmd_groups_verify_sorted); +IWL_EXPORT_SYMBOL(iwl_trans_is_ltr_enabled); |