diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/iwl-trans.c')
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/iwl-trans.c | 273 |
1 files changed, 172 insertions, 101 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-trans.c b/drivers/net/wireless/intel/iwlwifi/iwl-trans.c index 49c8507d1a6b..8a40801cf0dd 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-trans.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-trans.c @@ -2,7 +2,7 @@ /* * Copyright (C) 2015 Intel Mobile Communications GmbH * Copyright (C) 2016-2017 Intel Deutschland GmbH - * Copyright (C) 2019-2021, 2023-2024 Intel Corporation + * Copyright (C) 2019-2021, 2023-2025 Intel Corporation */ #include <linux/kernel.h> #include <linux/bsearch.h> @@ -15,12 +15,13 @@ #include <linux/dmapool.h> #include "fw/api/commands.h" #include "pcie/internal.h" -#include "iwl-context-info-gen3.h" +#include "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[]; }; @@ -81,14 +82,14 @@ void iwl_trans_free_restart_list(void) struct iwl_trans_reprobe { struct device *dev; - struct work_struct work; + 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); + reprobe = container_of(wk, typeof(*reprobe), work.work); if (device_reprobe(reprobe->dev)) dev_err(reprobe->dev, "reprobe failed!\n"); @@ -97,7 +98,32 @@ static void iwl_trans_reprobe_wk(struct work_struct *wk) module_put(THIS_MODULE); } -#define IWL_TRANS_RESET_OK_TIME 180 /* seconds */ +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) @@ -105,18 +131,46 @@ iwl_trans_determine_restart_mode(struct iwl_trans *trans) struct iwl_trans_dev_restart_data *data; enum iwl_reset_mode at_least = 0; unsigned int index; - static const enum iwl_reset_mode escalation_list[] = { + 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, - /* FIXME: add TOP reset */ IWL_RESET_MODE_PROD_RESET, - /* FIXME: add TOP 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, - /* FIXME: add TOP 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) at_least = IWL_RESET_MODE_REPROBE; @@ -125,25 +179,39 @@ iwl_trans_determine_restart_mode(struct iwl_trans *trans) if (!data) return at_least; - if (ktime_get_boottime_seconds() - data->last_error >= + 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 >= ARRAY_SIZE(escalation_list)) - index = ARRAY_SIZE(escalation_list) - 1; + 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(at_least, 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); - struct iwl_trans_reprobe *reprobe; + 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; @@ -168,35 +236,29 @@ static void iwl_trans_restart_wk(struct work_struct *wk) 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: - IWL_ERR(trans, "Device error - SW reset\n"); + 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"); - /* - * 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_WORK(&reprobe->work, iwl_trans_reprobe_wk); - schedule_work(&reprobe->work); + iwl_trans_schedule_reprobe(trans, 0); break; default: iwl_trans_pcie_reset(trans, mode); @@ -206,7 +268,7 @@ static void iwl_trans_restart_wk(struct work_struct *wk) struct iwl_trans *iwl_trans_alloc(unsigned int priv_size, struct device *dev, - const struct iwl_cfg_trans_params *cfg_trans) + const struct iwl_mac_cfg *mac_cfg) { struct iwl_trans *trans; #ifdef CONFIG_LOCKDEP @@ -217,7 +279,7 @@ struct iwl_trans *iwl_trans_alloc(unsigned int priv_size, if (!trans) return NULL; - trans->trans_cfg = cfg_trans; + trans->mac_cfg = mac_cfg; #ifdef CONFIG_LOCKDEP lockdep_init_map(&trans->sync_cmd_lockdep_map, "sync_cmd_lockdep_map", @@ -225,9 +287,8 @@ struct iwl_trans *iwl_trans_alloc(unsigned int priv_size, #endif trans->dev = dev; - trans->num_rx_queues = 1; - INIT_WORK(&trans->restart.wk, iwl_trans_restart_wk); + INIT_DELAYED_WORK(&trans->restart.wk, iwl_trans_restart_wk); return trans; } @@ -236,14 +297,18 @@ int iwl_trans_init(struct iwl_trans *trans) { int txcmd_size, txcmd_align; - if (!trans->trans_cfg->gen2) { - txcmd_size = sizeof(struct iwl_tx_cmd); + /* check if name/num_rx_queues were set as a proxy for info being set */ + if (WARN_ON(!trans->info.name || !trans->info.num_rxqs)) + return -EINVAL; + + if (!trans->mac_cfg->gen2) { + txcmd_size = sizeof(struct iwl_tx_cmd_v6); txcmd_align = sizeof(void *); - } else if (trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_AX210) { - txcmd_size = sizeof(struct iwl_tx_cmd_gen2); + } else if (trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_AX210) { + txcmd_size = sizeof(struct iwl_tx_cmd_v9); txcmd_align = 64; } else { - txcmd_size = sizeof(struct iwl_tx_cmd_gen3); + txcmd_size = sizeof(struct iwl_tx_cmd); txcmd_align = 128; } @@ -251,7 +316,7 @@ int iwl_trans_init(struct iwl_trans *trans) txcmd_size += 36; /* biggest possible 802.11 header */ /* Ensure device TX cmd cannot reach/cross a page boundary in gen2 */ - if (WARN_ON(trans->trans_cfg->gen2 && txcmd_size >= txcmd_align)) + if (WARN_ON(trans->mac_cfg->gen2 && txcmd_size >= txcmd_align)) return -EINVAL; snprintf(trans->dev_cmd_pool_name, sizeof(trans->dev_cmd_pool_name), @@ -263,15 +328,12 @@ int iwl_trans_init(struct iwl_trans *trans) if (!trans->dev_cmd_pool) return -ENOMEM; - /* Initialize the wait queue for commands */ - init_waitqueue_head(&trans->wait_command_queue); - return 0; } void iwl_trans_free(struct iwl_trans *trans) { - cancel_work_sync(&trans->restart.wk); + cancel_delayed_work_sync(&trans->restart.wk); kmem_cache_destroy(trans->dev_cmd_pool); } @@ -283,17 +345,7 @@ int iwl_trans_send_cmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd) test_bit(STATUS_RFKILL_OPMODE, &trans->status))) return -ERFKILL; - /* - * We can't test IWL_MVM_STATUS_IN_D3 in mvm->status because this - * bit is set early in the D3 flow, before we send all the commands - * that configure the firmware for D3 operation (power, patterns, ...) - * and we don't want to flag all those with CMD_SEND_IN_D3. - * So use the system_pm_mode instead. The only command sent after - * we set system_pm_mode is D3_CONFIG_CMD, which we now flag with - * CMD_SEND_IN_D3. - */ - if (unlikely(trans->system_pm_mode == IWL_PLAT_PM_MODE_D3 && - !(cmd->flags & CMD_SEND_IN_D3))) + if (unlikely(test_bit(STATUS_SUSPENDED, &trans->status))) return -EHOSTDOWN; if (unlikely(test_bit(STATUS_FW_ERROR, &trans->status))) @@ -306,7 +358,7 @@ int iwl_trans_send_cmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd) if (!(cmd->flags & CMD_ASYNC)) lock_map_acquire_read(&trans->sync_cmd_lockdep_map); - if (trans->wide_cmd_header && !iwl_cmd_groupid(cmd->id)) { + if (trans->conf.wide_cmd_header && !iwl_cmd_groupid(cmd->id)) { if (cmd->id != REPLY_ERROR) cmd->id = DEF_ID(cmd->id); } @@ -350,11 +402,12 @@ 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"; @@ -362,37 +415,29 @@ 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; - } - return 0; -} -IWL_EXPORT_SYMBOL(iwl_cmd_groups_verify_sorted); + 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); -void iwl_trans_configure(struct iwl_trans *trans, - const struct iwl_trans_config *trans_cfg) -{ - trans->op_mode = trans_cfg->op_mode; + WARN_ON_ONCE(!trans->conf.rx_mpdu_cmd); - iwl_trans_pcie_configure(trans, trans_cfg); - WARN_ON(iwl_cmd_groups_verify_sorted(trans_cfg)); + iwl_trans_pcie_op_mode_enter(trans); } -IWL_EXPORT_SYMBOL(iwl_trans_configure); +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); + /* opmode may not resume if it detects errors */ + clear_bit(STATUS_SUSPENDED, &trans->status); + return iwl_trans_pcie_start_hw(trans); } IWL_EXPORT_SYMBOL(iwl_trans_start_hw); @@ -403,7 +448,10 @@ void iwl_trans_op_mode_leave(struct iwl_trans *trans) 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; } @@ -480,18 +528,31 @@ IWL_EXPORT_SYMBOL(iwl_trans_dump_data); int iwl_trans_d3_suspend(struct iwl_trans *trans, bool test, bool reset) { + int err; + might_sleep(); - return iwl_trans_pcie_d3_suspend(trans, test, reset); + err = iwl_trans_pcie_d3_suspend(trans, test, reset); + + if (!err) + set_bit(STATUS_SUSPENDED, &trans->status); + + return err; } IWL_EXPORT_SYMBOL(iwl_trans_d3_suspend); int iwl_trans_d3_resume(struct iwl_trans *trans, enum iwl_d3_status *status, bool test, bool reset) { + int err; + might_sleep(); - return iwl_trans_pcie_d3_resume(trans, status, test, reset); + err = iwl_trans_pcie_d3_resume(trans, status, test, reset); + + clear_bit(STATUS_SUSPENDED, &trans->status); + + return err; } IWL_EXPORT_SYMBOL(iwl_trans_d3_resume); @@ -538,38 +599,42 @@ void __releases(nic_access) iwl_trans_release_nic_access(struct iwl_trans *trans) { iwl_trans_pcie_release_nic_access(trans); - __release(nic_access); } IWL_EXPORT_SYMBOL(iwl_trans_release_nic_access); -void iwl_trans_fw_alive(struct iwl_trans *trans, u32 scd_addr) +void iwl_trans_fw_alive(struct iwl_trans *trans) { might_sleep(); trans->state = IWL_TRANS_FW_ALIVE; - if (trans->trans_cfg->gen2) + if (trans->mac_cfg->gen2) iwl_trans_pcie_gen2_fw_alive(trans); else - iwl_trans_pcie_fw_alive(trans, scd_addr); + iwl_trans_pcie_fw_alive(trans); } IWL_EXPORT_SYMBOL(iwl_trans_fw_alive); -int iwl_trans_start_fw(struct iwl_trans *trans, const struct fw_img *fw, - bool run_in_rfkill) +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(); - WARN_ON_ONCE(!trans->rx_mpdu_cmd); + img = iwl_get_ucode_image(fw, ucode_type); + if (!img) + return -EINVAL; clear_bit(STATUS_FW_ERROR, &trans->status); - if (trans->trans_cfg->gen2) - ret = iwl_trans_pcie_gen2_start_fw(trans, fw, run_in_rfkill); + 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, run_in_rfkill); + ret = iwl_trans_pcie_start_fw(trans, fw, img, + run_in_rfkill); if (ret == 0) trans->state = IWL_TRANS_FW_STARTED; @@ -610,7 +675,7 @@ void iwl_trans_stop_device(struct iwl_trans *trans) iwl_op_mode_dump_error(trans->op_mode, &mode); } - if (trans->trans_cfg->gen2) + if (trans->mac_cfg->gen2) iwl_trans_pcie_gen2_stop_device(trans); else iwl_trans_pcie_stop_device(trans); @@ -629,7 +694,7 @@ int iwl_trans_tx(struct iwl_trans *trans, struct sk_buff *skb, "bad state = %d\n", trans->state)) return -EIO; - if (trans->trans_cfg->gen2) + 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); @@ -639,6 +704,9 @@ 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; @@ -671,6 +739,9 @@ 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; @@ -756,14 +827,14 @@ 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_gen3_load_pnvm(trans, pnvm_data, 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_gen3_set_pnvm(trans, capa); + iwl_trans_pcie_ctx_info_v2_set_pnvm(trans, capa); } IWL_EXPORT_SYMBOL(iwl_trans_set_pnvm); @@ -771,7 +842,7 @@ 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_gen3_load_reduce_power(trans, payloads, + return iwl_trans_pcie_ctx_info_v2_load_reduce_power(trans, payloads, capa); } IWL_EXPORT_SYMBOL(iwl_trans_load_reduce_power); @@ -779,6 +850,6 @@ IWL_EXPORT_SYMBOL(iwl_trans_load_reduce_power); void iwl_trans_set_reduce_power(struct iwl_trans *trans, const struct iwl_ucode_capabilities *capa) { - iwl_trans_pcie_ctx_info_gen3_set_reduce_power(trans, capa); + iwl_trans_pcie_ctx_info_v2_set_reduce_power(trans, capa); } IWL_EXPORT_SYMBOL(iwl_trans_set_reduce_power); |