// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2015-2021, The Linux Foundation. All rights reserved. */ #define pr_fmt(fmt) "icnss2: " fmt #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "main.h" #include "qmi.h" #include "debug.h" #include "power.h" #include "genl.h" #define MAX_PROP_SIZE 32 #define NUM_LOG_PAGES 10 #define NUM_LOG_LONG_PAGES 4 #define ICNSS_MAGIC 0x5abc5abc #define ICNSS_SERVICE_LOCATION_CLIENT_NAME "ICNSS-WLAN" #define ICNSS_WLAN_SERVICE_NAME "wlan/fw" #define ICNSS_DEFAULT_FEATURE_MASK 0x01 #define ICNSS_M3_SEGMENT(segment) "wcnss_"segment #define ICNSS_M3_SEGMENT_PHYAREG "phyareg" #define ICNSS_M3_SEGMENT_PHYA "phydbg" #define ICNSS_M3_SEGMENT_WMACREG "wmac0reg" #define ICNSS_M3_SEGMENT_WCSSDBG "WCSSDBG" #define ICNSS_M3_SEGMENT_PHYAM3 "PHYAPDMEM" #define ICNSS_QUIRKS_DEFAULT BIT(FW_REJUVENATE_ENABLE) #define ICNSS_MAX_PROBE_CNT 2 #define ICNSS_BDF_TYPE_DEFAULT ICNSS_BDF_ELF #define PROBE_TIMEOUT 15000 #define WLFW_TIMEOUT msecs_to_jiffies(3000) static struct icnss_priv *penv; uint64_t dynamic_feature_mask = ICNSS_DEFAULT_FEATURE_MASK; #define ICNSS_EVENT_PENDING 2989 #define ICNSS_EVENT_SYNC BIT(0) #define ICNSS_EVENT_UNINTERRUPTIBLE BIT(1) #define ICNSS_EVENT_SYNC_UNINTERRUPTIBLE (ICNSS_EVENT_UNINTERRUPTIBLE | \ ICNSS_EVENT_SYNC) enum icnss_pdr_cause_index { ICNSS_FW_CRASH, ICNSS_ROOT_PD_CRASH, ICNSS_ROOT_PD_SHUTDOWN, ICNSS_HOST_ERROR, }; static const char * const icnss_pdr_cause[] = { [ICNSS_FW_CRASH] = "FW crash", [ICNSS_ROOT_PD_CRASH] = "Root PD crashed", [ICNSS_ROOT_PD_SHUTDOWN] = "Root PD shutdown", [ICNSS_HOST_ERROR] = "Host error", }; static void icnss_set_plat_priv(struct icnss_priv *priv) { penv = priv; } static struct icnss_priv *icnss_get_plat_priv() { return penv; } static ssize_t icnss_sysfs_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count) { struct icnss_priv *priv = icnss_get_plat_priv(); atomic_set(&priv->is_shutdown, true); icnss_pr_dbg("Received shutdown indication"); return count; } static struct kobj_attribute icnss_sysfs_attribute = __ATTR(shutdown, 0660, NULL, icnss_sysfs_store); static void icnss_pm_stay_awake(struct icnss_priv *priv) { if (atomic_inc_return(&priv->pm_count) != 1) return; icnss_pr_vdbg("PM stay awake, state: 0x%lx, count: %d\n", priv->state, atomic_read(&priv->pm_count)); pm_stay_awake(&priv->pdev->dev); priv->stats.pm_stay_awake++; } static void icnss_pm_relax(struct icnss_priv *priv) { int r = atomic_dec_return(&priv->pm_count); WARN_ON(r < 0); if (r != 0) return; icnss_pr_vdbg("PM relax, state: 0x%lx, count: %d\n", priv->state, atomic_read(&priv->pm_count)); pm_relax(&priv->pdev->dev); priv->stats.pm_relax++; } char *icnss_driver_event_to_str(enum icnss_driver_event_type type) { switch (type) { case ICNSS_DRIVER_EVENT_SERVER_ARRIVE: return "SERVER_ARRIVE"; case ICNSS_DRIVER_EVENT_SERVER_EXIT: return "SERVER_EXIT"; case ICNSS_DRIVER_EVENT_FW_READY_IND: return "FW_READY"; case ICNSS_DRIVER_EVENT_REGISTER_DRIVER: return "REGISTER_DRIVER"; case ICNSS_DRIVER_EVENT_UNREGISTER_DRIVER: return "UNREGISTER_DRIVER"; case ICNSS_DRIVER_EVENT_PD_SERVICE_DOWN: return "PD_SERVICE_DOWN"; case ICNSS_DRIVER_EVENT_FW_EARLY_CRASH_IND: return "FW_EARLY_CRASH_IND"; case ICNSS_DRIVER_EVENT_IDLE_SHUTDOWN: return "IDLE_SHUTDOWN"; case ICNSS_DRIVER_EVENT_IDLE_RESTART: return "IDLE_RESTART"; case ICNSS_DRIVER_EVENT_FW_INIT_DONE_IND: return "FW_INIT_DONE"; case ICNSS_DRIVER_EVENT_QDSS_TRACE_REQ_MEM: return "QDSS_TRACE_REQ_MEM"; case ICNSS_DRIVER_EVENT_QDSS_TRACE_SAVE: return "QDSS_TRACE_SAVE"; case ICNSS_DRIVER_EVENT_QDSS_TRACE_FREE: return "QDSS_TRACE_FREE"; case ICNSS_DRIVER_EVENT_M3_DUMP_UPLOAD_REQ: return "M3_DUMP_UPLOAD"; case ICNSS_DRIVER_EVENT_QDSS_TRACE_REQ_DATA: return "QDSS_TRACE_REQ_DATA"; case ICNSS_DRIVER_EVENT_MAX: return "EVENT_MAX"; } return "UNKNOWN"; }; char *icnss_soc_wake_event_to_str(enum icnss_soc_wake_event_type type) { switch (type) { case ICNSS_SOC_WAKE_REQUEST_EVENT: return "SOC_WAKE_REQUEST"; case ICNSS_SOC_WAKE_RELEASE_EVENT: return "SOC_WAKE_RELEASE"; case ICNSS_SOC_WAKE_EVENT_MAX: return "SOC_EVENT_MAX"; } return "UNKNOWN"; }; int icnss_driver_event_post(struct icnss_priv *priv, enum icnss_driver_event_type type, u32 flags, void *data) { struct icnss_driver_event *event; unsigned long irq_flags; int gfp = GFP_KERNEL; int ret = 0; if (!priv) return -ENODEV; icnss_pr_dbg("Posting event: %s(%d), %s, flags: 0x%x, state: 0x%lx\n", icnss_driver_event_to_str(type), type, current->comm, flags, priv->state); if (type >= ICNSS_DRIVER_EVENT_MAX) { icnss_pr_err("Invalid Event type: %d, can't post", type); return -EINVAL; } if (in_interrupt() || irqs_disabled()) gfp = GFP_ATOMIC; event = kzalloc(sizeof(*event), gfp); if (event == NULL) return -ENOMEM; icnss_pm_stay_awake(priv); event->type = type; event->data = data; init_completion(&event->complete); event->ret = ICNSS_EVENT_PENDING; event->sync = !!(flags & ICNSS_EVENT_SYNC); spin_lock_irqsave(&priv->event_lock, irq_flags); list_add_tail(&event->list, &priv->event_list); spin_unlock_irqrestore(&priv->event_lock, irq_flags); priv->stats.events[type].posted++; queue_work(priv->event_wq, &priv->event_work); if (!(flags & ICNSS_EVENT_SYNC)) goto out; if (flags & ICNSS_EVENT_UNINTERRUPTIBLE) wait_for_completion(&event->complete); else ret = wait_for_completion_interruptible(&event->complete); icnss_pr_dbg("Completed event: %s(%d), state: 0x%lx, ret: %d/%d\n", icnss_driver_event_to_str(type), type, priv->state, ret, event->ret); spin_lock_irqsave(&priv->event_lock, irq_flags); if (ret == -ERESTARTSYS && event->ret == ICNSS_EVENT_PENDING) { event->sync = false; spin_unlock_irqrestore(&priv->event_lock, irq_flags); ret = -EINTR; goto out; } spin_unlock_irqrestore(&priv->event_lock, irq_flags); ret = event->ret; kfree(event); out: icnss_pm_relax(priv); return ret; } int icnss_soc_wake_event_post(struct icnss_priv *priv, enum icnss_soc_wake_event_type type, u32 flags, void *data) { struct icnss_soc_wake_event *event; unsigned long irq_flags; int gfp = GFP_KERNEL; int ret = 0; if (!priv) return -ENODEV; icnss_pr_dbg("Posting event: %s(%d), %s, flags: 0x%x, state: 0x%lx\n", icnss_soc_wake_event_to_str(type), type, current->comm, flags, priv->state); if (type >= ICNSS_SOC_WAKE_EVENT_MAX) { icnss_pr_err("Invalid Event type: %d, can't post", type); return -EINVAL; } if (in_interrupt() || irqs_disabled()) gfp = GFP_ATOMIC; event = kzalloc(sizeof(*event), gfp); if (!event) return -ENOMEM; icnss_pm_stay_awake(priv); event->type = type; event->data = data; init_completion(&event->complete); event->ret = ICNSS_EVENT_PENDING; event->sync = !!(flags & ICNSS_EVENT_SYNC); spin_lock_irqsave(&priv->soc_wake_msg_lock, irq_flags); list_add_tail(&event->list, &priv->soc_wake_msg_list); spin_unlock_irqrestore(&priv->soc_wake_msg_lock, irq_flags); priv->stats.soc_wake_events[type].posted++; queue_work(priv->soc_wake_wq, &priv->soc_wake_msg_work); if (!(flags & ICNSS_EVENT_SYNC)) goto out; if (flags & ICNSS_EVENT_UNINTERRUPTIBLE) wait_for_completion(&event->complete); else ret = wait_for_completion_interruptible(&event->complete); icnss_pr_dbg("Completed event: %s(%d), state: 0x%lx, ret: %d/%d\n", icnss_soc_wake_event_to_str(type), type, priv->state, ret, event->ret); spin_lock_irqsave(&priv->soc_wake_msg_lock, irq_flags); if (ret == -ERESTARTSYS && event->ret == ICNSS_EVENT_PENDING) { event->sync = false; spin_unlock_irqrestore(&priv->soc_wake_msg_lock, irq_flags); ret = -EINTR; goto out; } spin_unlock_irqrestore(&priv->soc_wake_msg_lock, irq_flags); ret = event->ret; kfree(event); out: icnss_pm_relax(priv); return ret; } bool icnss_is_fw_ready(void) { if (!penv) return false; else return test_bit(ICNSS_FW_READY, &penv->state); } EXPORT_SYMBOL(icnss_is_fw_ready); void icnss_block_shutdown(bool status) { if (!penv) return; if (status) { set_bit(ICNSS_BLOCK_SHUTDOWN, &penv->state); reinit_completion(&penv->unblock_shutdown); } else { clear_bit(ICNSS_BLOCK_SHUTDOWN, &penv->state); complete(&penv->unblock_shutdown); } } EXPORT_SYMBOL(icnss_block_shutdown); bool icnss_is_fw_down(void) { struct icnss_priv *priv = icnss_get_plat_priv(); if (!priv) return false; return test_bit(ICNSS_FW_DOWN, &priv->state) || test_bit(ICNSS_PD_RESTART, &priv->state) || test_bit(ICNSS_REJUVENATE, &priv->state); } EXPORT_SYMBOL(icnss_is_fw_down); bool icnss_is_rejuvenate(void) { if (!penv) return false; else return test_bit(ICNSS_REJUVENATE, &penv->state); } EXPORT_SYMBOL(icnss_is_rejuvenate); bool icnss_is_pdr(void) { if (!penv) return false; else return test_bit(ICNSS_PDR, &penv->state); } EXPORT_SYMBOL(icnss_is_pdr); static irqreturn_t fw_error_fatal_handler(int irq, void *ctx) { struct icnss_priv *priv = ctx; if (priv) priv->force_err_fatal = true; icnss_pr_err("Received force error fatal request from FW\n"); return IRQ_HANDLED; } static irqreturn_t fw_crash_indication_handler(int irq, void *ctx) { struct icnss_priv *priv = ctx; struct icnss_uevent_fw_down_data fw_down_data = {0}; icnss_pr_err("Received early crash indication from FW\n"); if (priv) { set_bit(ICNSS_FW_DOWN, &priv->state); icnss_ignore_fw_timeout(true); if (test_bit(ICNSS_FW_READY, &priv->state)) { fw_down_data.crashed = true; icnss_call_driver_uevent(priv, ICNSS_UEVENT_FW_DOWN, &fw_down_data); } } icnss_driver_event_post(priv, ICNSS_DRIVER_EVENT_FW_EARLY_CRASH_IND, 0, NULL); return IRQ_HANDLED; } static void register_fw_error_notifications(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); struct device_node *dev_node; int irq = 0, ret = 0; if (!priv) return; dev_node = of_find_node_by_name(NULL, "qcom,smp2p_map_wlan_1_in"); if (!dev_node) { icnss_pr_err("Failed to get smp2p node for force-fatal-error\n"); return; } icnss_pr_dbg("smp2p node->name=%s\n", dev_node->name); if (strcmp("qcom,smp2p_map_wlan_1_in", dev_node->name) == 0) { ret = irq = of_irq_get_byname(dev_node, "qcom,smp2p-force-fatal-error"); if (ret < 0) { icnss_pr_err("Unable to get force-fatal-error irq %d\n", irq); return; } } ret = devm_request_threaded_irq(dev, irq, NULL, fw_error_fatal_handler, IRQF_ONESHOT | IRQF_TRIGGER_RISING, "wlanfw-err", priv); if (ret < 0) { icnss_pr_err("Unable to register for error fatal IRQ handler %d ret = %d", irq, ret); return; } icnss_pr_dbg("FW force error fatal handler registered irq = %d\n", irq); priv->fw_error_fatal_irq = irq; } static void register_early_crash_notifications(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); struct device_node *dev_node; int irq = 0, ret = 0; if (!priv) return; dev_node = of_find_node_by_name(NULL, "qcom,smp2p_map_wlan_1_in"); if (!dev_node) { icnss_pr_err("Failed to get smp2p node for early-crash-ind\n"); return; } icnss_pr_dbg("smp2p node->name=%s\n", dev_node->name); if (strcmp("qcom,smp2p_map_wlan_1_in", dev_node->name) == 0) { ret = irq = of_irq_get_byname(dev_node, "qcom,smp2p-early-crash-ind"); if (ret < 0) { icnss_pr_err("Unable to get early-crash-ind irq %d\n", irq); return; } } ret = devm_request_threaded_irq(dev, irq, NULL, fw_crash_indication_handler, IRQF_ONESHOT | IRQF_TRIGGER_RISING, "wlanfw-early-crash-ind", priv); if (ret < 0) { icnss_pr_err("Unable to register for early crash indication IRQ handler %d ret = %d", irq, ret); return; } icnss_pr_dbg("FW crash indication handler registered irq = %d\n", irq); priv->fw_early_crash_irq = irq; } int icnss_call_driver_uevent(struct icnss_priv *priv, enum icnss_uevent uevent, void *data) { struct icnss_uevent_data uevent_data; if (!priv->ops || !priv->ops->uevent) return 0; icnss_pr_dbg("Calling driver uevent state: 0x%lx, uevent: %d\n", priv->state, uevent); uevent_data.uevent = uevent; uevent_data.data = data; return priv->ops->uevent(&priv->pdev->dev, &uevent_data); } static int icnss_driver_event_server_arrive(struct icnss_priv *priv, void *data) { int ret = 0; bool ignore_assert = false; if (!priv) return -ENODEV; set_bit(ICNSS_WLFW_EXISTS, &priv->state); clear_bit(ICNSS_FW_DOWN, &priv->state); clear_bit(ICNSS_FW_READY, &priv->state); icnss_ignore_fw_timeout(false); if (test_bit(ICNSS_WLFW_CONNECTED, &penv->state)) { icnss_pr_err("QMI Server already in Connected State\n"); ICNSS_ASSERT(0); } ret = icnss_connect_to_fw_server(priv, data); if (ret) goto fail; set_bit(ICNSS_WLFW_CONNECTED, &priv->state); ret = icnss_hw_power_on(priv); if (ret) goto fail; ret = wlfw_ind_register_send_sync_msg(priv); if (ret < 0) { if (ret == -EALREADY) { ret = 0; goto qmi_registered; } ignore_assert = true; goto err_power_on; } if (priv->device_id == WCN6750_DEVICE_ID) { ret = wlfw_host_cap_send_sync(priv); if (ret < 0) goto err_power_on; } if (priv->device_id == ADRASTEA_DEVICE_ID) { if (!priv->msa_va) { icnss_pr_err("Invalid MSA address\n"); ret = -EINVAL; goto err_power_on; } ret = wlfw_msa_mem_info_send_sync_msg(priv); if (ret < 0) { ignore_assert = true; goto err_power_on; } ret = wlfw_msa_ready_send_sync_msg(priv); if (ret < 0) { ignore_assert = true; goto err_power_on; } } ret = wlfw_cap_send_sync_msg(priv); if (ret < 0) { ignore_assert = true; goto err_power_on; } if (priv->device_id == WCN6750_DEVICE_ID) { ret = wlfw_device_info_send_msg(priv); if (ret < 0) { ignore_assert = true; goto err_power_on; } priv->mem_base_va = devm_ioremap(&priv->pdev->dev, priv->mem_base_pa, priv->mem_base_size); if (!priv->mem_base_va) { icnss_pr_err("Ioremap failed for bar address\n"); goto err_power_on; } icnss_pr_dbg("Non-Secured Bar Address pa: %pa, va: 0x%pK\n", &priv->mem_base_pa, priv->mem_base_va); if (priv->mhi_state_info_pa) priv->mhi_state_info_va = devm_ioremap(&priv->pdev->dev, priv->mhi_state_info_pa, PAGE_SIZE); if (!priv->mhi_state_info_va) icnss_pr_err("Ioremap failed for MHI info address\n"); icnss_pr_dbg("MHI state info Address pa: %pa, va: 0x%pK\n", &priv->mhi_state_info_pa, priv->mhi_state_info_va); icnss_wlfw_bdf_dnld_send_sync(priv, ICNSS_BDF_REGDB); ret = icnss_wlfw_bdf_dnld_send_sync(priv, priv->ctrl_params.bdf_type); } if (priv->device_id == ADRASTEA_DEVICE_ID) { wlfw_dynamic_feature_mask_send_sync_msg(priv, dynamic_feature_mask); } if (!priv->fw_error_fatal_irq) register_fw_error_notifications(&priv->pdev->dev); if (!priv->fw_early_crash_irq) register_early_crash_notifications(&priv->pdev->dev); if (priv->vbatt_supported) icnss_init_vph_monitor(priv); return ret; err_power_on: icnss_hw_power_off(priv); fail: ICNSS_ASSERT(ignore_assert); qmi_registered: return ret; } static int icnss_driver_event_server_exit(struct icnss_priv *priv) { if (!priv) return -ENODEV; icnss_pr_info("WLAN FW Service Disconnected: 0x%lx\n", priv->state); icnss_clear_server(priv); if (priv->adc_tm_dev && priv->vbatt_supported) adc_tm5_disable_chan_meas(priv->adc_tm_dev, &priv->vph_monitor_params); return 0; } static int icnss_call_driver_probe(struct icnss_priv *priv) { int ret = 0; int probe_cnt = 0; if (!priv->ops || !priv->ops->probe) return 0; if (test_bit(ICNSS_DRIVER_PROBED, &priv->state)) return -EINVAL; icnss_pr_dbg("Calling driver probe state: 0x%lx\n", priv->state); icnss_hw_power_on(priv); icnss_block_shutdown(true); while (probe_cnt < ICNSS_MAX_PROBE_CNT) { ret = priv->ops->probe(&priv->pdev->dev); probe_cnt++; if (ret != -EPROBE_DEFER) break; } if (ret < 0) { icnss_pr_err("Driver probe failed: %d, state: 0x%lx, probe_cnt: %d\n", ret, priv->state, probe_cnt); icnss_block_shutdown(false); goto out; } icnss_block_shutdown(false); set_bit(ICNSS_DRIVER_PROBED, &priv->state); return 0; out: icnss_hw_power_off(priv); return ret; } static int icnss_call_driver_shutdown(struct icnss_priv *priv) { if (!test_bit(ICNSS_DRIVER_PROBED, &priv->state)) goto out; if (!priv->ops || !priv->ops->shutdown) goto out; if (test_bit(ICNSS_SHUTDOWN_DONE, &priv->state)) goto out; icnss_pr_dbg("Calling driver shutdown state: 0x%lx\n", priv->state); priv->ops->shutdown(&priv->pdev->dev); set_bit(ICNSS_SHUTDOWN_DONE, &priv->state); out: return 0; } static int icnss_pd_restart_complete(struct icnss_priv *priv) { int ret = 0; icnss_pm_relax(priv); icnss_call_driver_shutdown(priv); clear_bit(ICNSS_PDR, &priv->state); clear_bit(ICNSS_REJUVENATE, &priv->state); clear_bit(ICNSS_PD_RESTART, &priv->state); priv->early_crash_ind = false; priv->is_ssr = false; if (!priv->ops || !priv->ops->reinit) goto out; if (test_bit(ICNSS_FW_DOWN, &priv->state)) { icnss_pr_err("FW is in bad state, state: 0x%lx\n", priv->state); goto out; } if (!test_bit(ICNSS_DRIVER_PROBED, &priv->state)) goto call_probe; icnss_pr_dbg("Calling driver reinit state: 0x%lx\n", priv->state); icnss_hw_power_on(priv); icnss_block_shutdown(true); ret = priv->ops->reinit(&priv->pdev->dev); if (ret < 0) { icnss_fatal_err("Driver reinit failed: %d, state: 0x%lx\n", ret, priv->state); if (!priv->allow_recursive_recovery) ICNSS_ASSERT(false); icnss_block_shutdown(false); goto out_power_off; } icnss_block_shutdown(false); clear_bit(ICNSS_SHUTDOWN_DONE, &priv->state); return 0; call_probe: return icnss_call_driver_probe(priv); out_power_off: icnss_hw_power_off(priv); out: return ret; } static int icnss_driver_event_fw_ready_ind(struct icnss_priv *priv, void *data) { int ret = 0; if (!priv) return -ENODEV; set_bit(ICNSS_FW_READY, &priv->state); clear_bit(ICNSS_MODE_ON, &priv->state); icnss_pr_info("WLAN FW is ready: 0x%lx\n", priv->state); icnss_hw_power_off(priv); if (!priv->pdev) { icnss_pr_err("Device is not ready\n"); ret = -ENODEV; goto out; } if (test_bit(ICNSS_PD_RESTART, &priv->state)) ret = icnss_pd_restart_complete(priv); else ret = icnss_call_driver_probe(priv); icnss_vreg_unvote(priv); out: return ret; } static int icnss_driver_event_fw_init_done(struct icnss_priv *priv, void *data) { int ret = 0; if (!priv) return -ENODEV; icnss_pr_info("WLAN FW Initialization done: 0x%lx\n", priv->state); if (icnss_wlfw_qdss_dnld_send_sync(priv)) icnss_pr_info("Failed to download qdss configuration file"); if (test_bit(ICNSS_COLD_BOOT_CAL, &priv->state)) ret = wlfw_wlan_mode_send_sync_msg(priv, (enum wlfw_driver_mode_enum_v01)ICNSS_CALIBRATION); else icnss_driver_event_fw_ready_ind(priv, NULL); return ret; } int icnss_alloc_qdss_mem(struct icnss_priv *priv) { struct platform_device *pdev = priv->pdev; struct icnss_fw_mem *qdss_mem = priv->qdss_mem; int i, j; for (i = 0; i < priv->qdss_mem_seg_len; i++) { if (!qdss_mem[i].va && qdss_mem[i].size) { qdss_mem[i].va = dma_alloc_coherent(&pdev->dev, qdss_mem[i].size, &qdss_mem[i].pa, GFP_KERNEL); if (!qdss_mem[i].va) { icnss_pr_err("Failed to allocate QDSS memory for FW, size: 0x%zx, type: %u, chuck-ID: %d\n", qdss_mem[i].size, qdss_mem[i].type, i); break; } } } /* Best-effort allocation for QDSS trace */ if (i < priv->qdss_mem_seg_len) { for (j = i; j < priv->qdss_mem_seg_len; j++) { qdss_mem[j].type = 0; qdss_mem[j].size = 0; } priv->qdss_mem_seg_len = i; } return 0; } void icnss_free_qdss_mem(struct icnss_priv *priv) { struct platform_device *pdev = priv->pdev; struct icnss_fw_mem *qdss_mem = priv->qdss_mem; int i; for (i = 0; i < priv->qdss_mem_seg_len; i++) { if (qdss_mem[i].va && qdss_mem[i].size) { icnss_pr_dbg("Freeing memory for QDSS: pa: %pa, size: 0x%zx, type: %u\n", &qdss_mem[i].pa, qdss_mem[i].size, qdss_mem[i].type); dma_free_coherent(&pdev->dev, qdss_mem[i].size, qdss_mem[i].va, qdss_mem[i].pa); qdss_mem[i].va = NULL; qdss_mem[i].pa = 0; qdss_mem[i].size = 0; qdss_mem[i].type = 0; } } priv->qdss_mem_seg_len = 0; } static int icnss_qdss_trace_req_mem_hdlr(struct icnss_priv *priv) { int ret = 0; ret = icnss_alloc_qdss_mem(priv); if (ret < 0) return ret; return wlfw_qdss_trace_mem_info_send_sync(priv); } static void *icnss_qdss_trace_pa_to_va(struct icnss_priv *priv, u64 pa, u32 size, int *seg_id) { int i = 0; struct icnss_fw_mem *qdss_mem = priv->qdss_mem; u64 offset = 0; void *va = NULL; u64 local_pa; u32 local_size; for (i = 0; i < priv->qdss_mem_seg_len; i++) { local_pa = (u64)qdss_mem[i].pa; local_size = (u32)qdss_mem[i].size; if (pa == local_pa && size <= local_size) { va = qdss_mem[i].va; break; } if (pa > local_pa && pa < local_pa + local_size && pa + size <= local_pa + local_size) { offset = pa - local_pa; va = qdss_mem[i].va + offset; break; } } *seg_id = i; return va; } static int icnss_qdss_trace_save_hdlr(struct icnss_priv *priv, void *data) { struct icnss_qmi_event_qdss_trace_save_data *event_data = data; struct icnss_fw_mem *qdss_mem = priv->qdss_mem; int ret = 0; int i; void *va = NULL; u64 pa; u32 size; int seg_id = 0; if (!priv->qdss_mem_seg_len) { icnss_pr_err("Memory for QDSS trace is not available\n"); return -ENOMEM; } if (event_data->mem_seg_len == 0) { for (i = 0; i < priv->qdss_mem_seg_len; i++) { ret = icnss_genl_send_msg(qdss_mem[i].va, ICNSS_GENL_MSG_TYPE_QDSS, event_data->file_name, qdss_mem[i].size); if (ret < 0) { icnss_pr_err("Fail to save QDSS data: %d\n", ret); break; } } } else { for (i = 0; i < event_data->mem_seg_len; i++) { pa = event_data->mem_seg[i].addr; size = event_data->mem_seg[i].size; va = icnss_qdss_trace_pa_to_va(priv, pa, size, &seg_id); if (!va) { icnss_pr_err("Fail to find matching va for pa %pa\n", &pa); ret = -EINVAL; break; } ret = icnss_genl_send_msg(va, ICNSS_GENL_MSG_TYPE_QDSS, event_data->file_name, size); if (ret < 0) { icnss_pr_err("Fail to save QDSS data: %d\n", ret); break; } } } kfree(data); return ret; } static inline int icnss_atomic_dec_if_greater_one(atomic_t *v) { int dec, c = atomic_read(v); do { dec = c - 1; if (unlikely(dec < 1)) break; } while (!atomic_try_cmpxchg(v, &c, dec)); return dec; } static int icnss_qdss_trace_req_data_hdlr(struct icnss_priv *priv, void *data) { int ret = 0; struct icnss_qmi_event_qdss_trace_save_data *event_data = data; if (!priv) return -ENODEV; if (!data) return -EINVAL; ret = icnss_wlfw_qdss_data_send_sync(priv, event_data->file_name, event_data->total_size); kfree(data); return ret; } static int icnss_event_soc_wake_request(struct icnss_priv *priv, void *data) { int ret = 0; if (!priv) return -ENODEV; ret = wlfw_send_soc_wake_msg(priv, QMI_WLFW_WAKE_REQUEST_V01); if (!ret) atomic_inc(&priv->soc_wake_ref_count); return ret; } static int icnss_event_soc_wake_release(struct icnss_priv *priv, void *data) { int ret = 0; int count = 0; if (!priv) return -ENODEV; count = atomic_dec_return(&priv->soc_wake_ref_count); if (count) { icnss_pr_dbg("Wake release not called. Ref count: %d", count); return 0; } ret = wlfw_send_soc_wake_msg(priv, QMI_WLFW_WAKE_RELEASE_V01); return ret; } static int icnss_driver_event_register_driver(struct icnss_priv *priv, void *data) { int ret = 0; int probe_cnt = 0; if (priv->ops) return -EEXIST; priv->ops = data; if (test_bit(SKIP_QMI, &priv->ctrl_params.quirks)) set_bit(ICNSS_FW_READY, &priv->state); if (test_bit(ICNSS_FW_DOWN, &priv->state)) { icnss_pr_err("FW is in bad state, state: 0x%lx\n", priv->state); return -ENODEV; } if (!test_bit(ICNSS_FW_READY, &priv->state)) { icnss_pr_dbg("FW is not ready yet, state: 0x%lx\n", priv->state); goto out; } ret = icnss_hw_power_on(priv); if (ret) goto out; icnss_block_shutdown(true); while (probe_cnt < ICNSS_MAX_PROBE_CNT) { ret = priv->ops->probe(&priv->pdev->dev); probe_cnt++; if (ret != -EPROBE_DEFER) break; } if (ret) { icnss_pr_err("Driver probe failed: %d, state: 0x%lx, probe_cnt: %d\n", ret, priv->state, probe_cnt); icnss_block_shutdown(false); goto power_off; } icnss_block_shutdown(false); set_bit(ICNSS_DRIVER_PROBED, &priv->state); return 0; power_off: icnss_hw_power_off(priv); out: return ret; } static int icnss_driver_event_unregister_driver(struct icnss_priv *priv, void *data) { if (!test_bit(ICNSS_DRIVER_PROBED, &priv->state)) { priv->ops = NULL; goto out; } set_bit(ICNSS_DRIVER_UNLOADING, &priv->state); icnss_block_shutdown(true); if (priv->ops) priv->ops->remove(&priv->pdev->dev); icnss_block_shutdown(false); clear_bit(ICNSS_DRIVER_UNLOADING, &priv->state); clear_bit(ICNSS_DRIVER_PROBED, &priv->state); priv->ops = NULL; icnss_hw_power_off(priv); out: return 0; } static int icnss_fw_crashed(struct icnss_priv *priv, struct icnss_event_pd_service_down_data *event_data) { icnss_pr_dbg("FW crashed, state: 0x%lx\n", priv->state); set_bit(ICNSS_PD_RESTART, &priv->state); clear_bit(ICNSS_FW_READY, &priv->state); icnss_pm_stay_awake(priv); if (test_bit(ICNSS_DRIVER_PROBED, &priv->state)) icnss_call_driver_uevent(priv, ICNSS_UEVENT_FW_CRASHED, NULL); if (event_data && event_data->fw_rejuvenate) wlfw_rejuvenate_ack_send_sync_msg(priv); return 0; } int icnss_update_hang_event_data(struct icnss_priv *priv, struct icnss_uevent_hang_data *hang_data) { if (!priv->hang_event_data_va) return -EINVAL; priv->hang_event_data = kmemdup(priv->hang_event_data_va, priv->hang_event_data_len, GFP_ATOMIC); if (!priv->hang_event_data) return -ENOMEM; // Update the hang event params hang_data->hang_event_data = priv->hang_event_data; hang_data->hang_event_data_len = priv->hang_event_data_len; return 0; } int icnss_send_hang_event_data(struct icnss_priv *priv) { struct icnss_uevent_hang_data hang_data = {0}; int ret = 0xFF; if (priv->early_crash_ind) { ret = icnss_update_hang_event_data(priv, &hang_data); if (ret) icnss_pr_err("Unable to allocate memory for Hang event data\n"); } icnss_call_driver_uevent(priv, ICNSS_UEVENT_HANG_DATA, &hang_data); if (!ret) { kfree(priv->hang_event_data); priv->hang_event_data = NULL; } return 0; } static int icnss_driver_event_pd_service_down(struct icnss_priv *priv, void *data) { struct icnss_event_pd_service_down_data *event_data = data; if (!test_bit(ICNSS_WLFW_EXISTS, &priv->state)) { icnss_ignore_fw_timeout(false); goto out; } if (priv->force_err_fatal) ICNSS_ASSERT(0); if (priv->device_id == WCN6750_DEVICE_ID) { priv->smp2p_info.seq = 0; if (qcom_smem_state_update_bits( priv->smp2p_info.smem_state, ICNSS_SMEM_VALUE_MASK, 0)) icnss_pr_dbg("Error in SMP2P sent ret: %d\n"); } icnss_send_hang_event_data(priv); if (priv->early_crash_ind) { icnss_pr_dbg("PD Down ignored as early indication is processed: %d, state: 0x%lx\n", event_data->crashed, priv->state); goto out; } if (test_bit(ICNSS_PD_RESTART, &priv->state) && event_data->crashed) { icnss_fatal_err("PD Down while recovery inprogress, crashed: %d, state: 0x%lx\n", event_data->crashed, priv->state); if (!priv->allow_recursive_recovery) ICNSS_ASSERT(0); goto out; } if (!test_bit(ICNSS_PD_RESTART, &priv->state)) icnss_fw_crashed(priv, event_data); out: kfree(data); return 0; } static int icnss_driver_event_early_crash_ind(struct icnss_priv *priv, void *data) { if (!test_bit(ICNSS_WLFW_EXISTS, &priv->state)) { icnss_ignore_fw_timeout(false); goto out; } priv->early_crash_ind = true; icnss_fw_crashed(priv, NULL); out: kfree(data); return 0; } static int icnss_driver_event_idle_shutdown(struct icnss_priv *priv, void *data) { int ret = 0; if (!priv->ops || !priv->ops->idle_shutdown) return 0; if (priv->is_ssr || test_bit(ICNSS_PDR, &priv->state) || test_bit(ICNSS_REJUVENATE, &priv->state)) { icnss_pr_err("SSR/PDR is already in-progress during idle shutdown callback\n"); ret = -EBUSY; } else { icnss_pr_dbg("Calling driver idle shutdown, state: 0x%lx\n", priv->state); icnss_block_shutdown(true); ret = priv->ops->idle_shutdown(&priv->pdev->dev); icnss_block_shutdown(false); } return ret; } static int icnss_driver_event_idle_restart(struct icnss_priv *priv, void *data) { int ret = 0; if (!priv->ops || !priv->ops->idle_restart) return 0; if (priv->is_ssr || test_bit(ICNSS_PDR, &priv->state) || test_bit(ICNSS_REJUVENATE, &priv->state)) { icnss_pr_err("SSR/PDR is already in-progress during idle restart callback\n"); ret = -EBUSY; } else { icnss_pr_dbg("Calling driver idle restart, state: 0x%lx\n", priv->state); icnss_block_shutdown(true); ret = priv->ops->idle_restart(&priv->pdev->dev); icnss_block_shutdown(false); } return ret; } static int icnss_qdss_trace_free_hdlr(struct icnss_priv *priv) { icnss_free_qdss_mem(priv); return 0; } static int icnss_m3_dump_upload_req_hdlr(struct icnss_priv *priv, void *data) { struct icnss_m3_upload_segments_req_data *event_data = data; struct ramdump_segment segment; int i, status = 0, ret = 0; for (i = 0; i < event_data->no_of_valid_segments; i++) { memset(&segment, 0, sizeof(segment)); segment.v_address = devm_ioremap(&priv->pdev->dev, event_data->m3_segment[i].addr, event_data->m3_segment[i].size); if (!segment.v_address) { icnss_pr_err("Failed to ioremap M3 Dump region"); ret = -ENOMEM; goto send_resp; } segment.size = event_data->m3_segment[i].size; segment.name = event_data->m3_segment[i].name; switch (event_data->m3_segment[i].type) { case QMI_M3_SEGMENT_PHYAREG_V01: ret = do_ramdump(priv->m3_dump_dev_seg1, &segment, 1); break; case QMI_M3_SEGMENT_PHYDBG_V01: ret = do_ramdump(priv->m3_dump_dev_seg2, &segment, 1); break; case QMI_M3_SEGMENT_WMAC0_REG_V01: ret = do_ramdump(priv->m3_dump_dev_seg3, &segment, 1); break; case QMI_M3_SEGMENT_WCSSDBG_V01: ret = do_ramdump(priv->m3_dump_dev_seg4, &segment, 1); break; case QMI_M3_SEGMENT_PHYAPDMEM_V01: ret = do_ramdump(priv->m3_dump_dev_seg5, &segment, 1); break; default: icnss_pr_err("Invalid Segment type: %d", event_data->m3_segment[i].type); } if (ret) { status = ret; icnss_pr_err("Failed to dump m3 %s segment, err = %d\n", event_data->m3_segment[i].name, ret); } } send_resp: icnss_wlfw_m3_dump_upload_done_send_sync(priv, event_data->pdev_id, status); return ret; } static void icnss_driver_event_work(struct work_struct *work) { struct icnss_priv *priv = container_of(work, struct icnss_priv, event_work); struct icnss_driver_event *event; unsigned long flags; int ret; icnss_pm_stay_awake(priv); spin_lock_irqsave(&priv->event_lock, flags); while (!list_empty(&priv->event_list)) { event = list_first_entry(&priv->event_list, struct icnss_driver_event, list); list_del(&event->list); spin_unlock_irqrestore(&priv->event_lock, flags); icnss_pr_dbg("Processing event: %s%s(%d), state: 0x%lx\n", icnss_driver_event_to_str(event->type), event->sync ? "-sync" : "", event->type, priv->state); switch (event->type) { case ICNSS_DRIVER_EVENT_SERVER_ARRIVE: ret = icnss_driver_event_server_arrive(priv, event->data); break; case ICNSS_DRIVER_EVENT_SERVER_EXIT: ret = icnss_driver_event_server_exit(priv); break; case ICNSS_DRIVER_EVENT_FW_READY_IND: ret = icnss_driver_event_fw_ready_ind(priv, event->data); break; case ICNSS_DRIVER_EVENT_REGISTER_DRIVER: ret = icnss_driver_event_register_driver(priv, event->data); break; case ICNSS_DRIVER_EVENT_UNREGISTER_DRIVER: ret = icnss_driver_event_unregister_driver(priv, event->data); break; case ICNSS_DRIVER_EVENT_PD_SERVICE_DOWN: ret = icnss_driver_event_pd_service_down(priv, event->data); break; case ICNSS_DRIVER_EVENT_FW_EARLY_CRASH_IND: ret = icnss_driver_event_early_crash_ind(priv, event->data); break; case ICNSS_DRIVER_EVENT_IDLE_SHUTDOWN: ret = icnss_driver_event_idle_shutdown(priv, event->data); break; case ICNSS_DRIVER_EVENT_IDLE_RESTART: ret = icnss_driver_event_idle_restart(priv, event->data); break; case ICNSS_DRIVER_EVENT_FW_INIT_DONE_IND: ret = icnss_driver_event_fw_init_done(priv, event->data); break; case ICNSS_DRIVER_EVENT_QDSS_TRACE_REQ_MEM: ret = icnss_qdss_trace_req_mem_hdlr(priv); break; case ICNSS_DRIVER_EVENT_QDSS_TRACE_SAVE: ret = icnss_qdss_trace_save_hdlr(priv, event->data); break; case ICNSS_DRIVER_EVENT_QDSS_TRACE_FREE: ret = icnss_qdss_trace_free_hdlr(priv); break; case ICNSS_DRIVER_EVENT_M3_DUMP_UPLOAD_REQ: ret = icnss_m3_dump_upload_req_hdlr(priv, event->data); break; case ICNSS_DRIVER_EVENT_QDSS_TRACE_REQ_DATA: ret = icnss_qdss_trace_req_data_hdlr(priv, event->data); break; default: icnss_pr_err("Invalid Event type: %d", event->type); kfree(event); continue; } priv->stats.events[event->type].processed++; icnss_pr_dbg("Event Processed: %s%s(%d), ret: %d, state: 0x%lx\n", icnss_driver_event_to_str(event->type), event->sync ? "-sync" : "", event->type, ret, priv->state); spin_lock_irqsave(&priv->event_lock, flags); if (event->sync) { event->ret = ret; complete(&event->complete); continue; } spin_unlock_irqrestore(&priv->event_lock, flags); kfree(event); spin_lock_irqsave(&priv->event_lock, flags); } spin_unlock_irqrestore(&priv->event_lock, flags); icnss_pm_relax(priv); } static void icnss_soc_wake_msg_work(struct work_struct *work) { struct icnss_priv *priv = container_of(work, struct icnss_priv, soc_wake_msg_work); struct icnss_soc_wake_event *event; unsigned long flags; int ret; icnss_pm_stay_awake(priv); spin_lock_irqsave(&priv->soc_wake_msg_lock, flags); while (!list_empty(&priv->soc_wake_msg_list)) { event = list_first_entry(&priv->soc_wake_msg_list, struct icnss_soc_wake_event, list); list_del(&event->list); spin_unlock_irqrestore(&priv->soc_wake_msg_lock, flags); icnss_pr_dbg("Processing event: %s%s(%d), state: 0x%lx\n", icnss_soc_wake_event_to_str(event->type), event->sync ? "-sync" : "", event->type, priv->state); switch (event->type) { case ICNSS_SOC_WAKE_REQUEST_EVENT: ret = icnss_event_soc_wake_request(priv, event->data); break; case ICNSS_SOC_WAKE_RELEASE_EVENT: ret = icnss_event_soc_wake_release(priv, event->data); break; default: icnss_pr_err("Invalid Event type: %d", event->type); kfree(event); continue; } priv->stats.soc_wake_events[event->type].processed++; icnss_pr_dbg("Event Processed: %s%s(%d), ret: %d, state: 0x%lx\n", icnss_soc_wake_event_to_str(event->type), event->sync ? "-sync" : "", event->type, ret, priv->state); spin_lock_irqsave(&priv->soc_wake_msg_lock, flags); if (event->sync) { event->ret = ret; complete(&event->complete); continue; } spin_unlock_irqrestore(&priv->soc_wake_msg_lock, flags); kfree(event); spin_lock_irqsave(&priv->soc_wake_msg_lock, flags); } spin_unlock_irqrestore(&priv->soc_wake_msg_lock, flags); icnss_pm_relax(priv); } static int icnss_msa0_ramdump(struct icnss_priv *priv) { struct ramdump_segment segment; memset(&segment, 0, sizeof(segment)); segment.v_address = priv->msa_va; segment.size = priv->msa_mem_size; return do_ramdump(priv->msa0_dump_dev, &segment, 1); } static void icnss_update_state_send_modem_shutdown(struct icnss_priv *priv, void *data) { struct notif_data *notif = data; int ret = 0; if (!notif->crashed) { if (atomic_read(&priv->is_shutdown)) { atomic_set(&priv->is_shutdown, false); if (!test_bit(ICNSS_PD_RESTART, &priv->state) && !test_bit(ICNSS_SHUTDOWN_DONE, &priv->state) && !test_bit(ICNSS_BLOCK_SHUTDOWN, &priv->state)) { clear_bit(ICNSS_FW_READY, &priv->state); icnss_driver_event_post(priv, ICNSS_DRIVER_EVENT_UNREGISTER_DRIVER, ICNSS_EVENT_SYNC_UNINTERRUPTIBLE, NULL); } } if (test_bit(ICNSS_BLOCK_SHUTDOWN, &priv->state)) { if (!wait_for_completion_timeout( &priv->unblock_shutdown, msecs_to_jiffies(PROBE_TIMEOUT))) icnss_pr_err("modem block shutdown timeout\n"); } ret = wlfw_send_modem_shutdown_msg(priv); if (ret < 0) icnss_pr_err("Fail to send modem shutdown Indication %d\n", ret); } } static int icnss_modem_notifier_nb(struct notifier_block *nb, unsigned long code, void *data) { struct icnss_event_pd_service_down_data *event_data; struct notif_data *notif = data; struct icnss_priv *priv = container_of(nb, struct icnss_priv, modem_ssr_nb); struct icnss_uevent_fw_down_data fw_down_data = {0}; icnss_pr_vdbg("Modem-Notify: event %lu\n", code); if (code == SUBSYS_AFTER_SHUTDOWN) { icnss_pr_info("Collecting msa0 segment dump\n"); icnss_msa0_ramdump(priv); goto out; } if (code != SUBSYS_BEFORE_SHUTDOWN) goto out; priv->is_ssr = true; icnss_update_state_send_modem_shutdown(priv, data); if (test_bit(ICNSS_PDR_REGISTERED, &priv->state)) { set_bit(ICNSS_FW_DOWN, &priv->state); icnss_ignore_fw_timeout(true); if (test_bit(ICNSS_FW_READY, &priv->state)) { fw_down_data.crashed = !!notif->crashed; icnss_call_driver_uevent(priv, ICNSS_UEVENT_FW_DOWN, &fw_down_data); } goto out; } icnss_pr_info("Modem went down, state: 0x%lx, crashed: %d\n", priv->state, notif->crashed); set_bit(ICNSS_FW_DOWN, &priv->state); if (notif->crashed) priv->stats.recovery.root_pd_crash++; else priv->stats.recovery.root_pd_shutdown++; icnss_ignore_fw_timeout(true); event_data = kzalloc(sizeof(*event_data), GFP_KERNEL); if (event_data == NULL) { icnss_pr_vdbg("Exit %s, event_data is NULL\n", __func__); return notifier_from_errno(-ENOMEM); } event_data->crashed = notif->crashed; fw_down_data.crashed = !!notif->crashed; if (test_bit(ICNSS_FW_READY, &priv->state)) { fw_down_data.crashed = !!notif->crashed; icnss_call_driver_uevent(priv, ICNSS_UEVENT_FW_DOWN, &fw_down_data); } icnss_driver_event_post(priv, ICNSS_DRIVER_EVENT_PD_SERVICE_DOWN, ICNSS_EVENT_SYNC, event_data); out: icnss_pr_vdbg("Exit %s,state: 0x%lx\n", __func__, priv->state); return NOTIFY_OK; } static int icnss_modem_ssr_register_notifier(struct icnss_priv *priv) { int ret = 0; priv->modem_ssr_nb.notifier_call = icnss_modem_notifier_nb; priv->modem_notify_handler = subsys_notif_register_notifier("modem", &priv->modem_ssr_nb); if (IS_ERR(priv->modem_notify_handler)) { ret = PTR_ERR(priv->modem_notify_handler); icnss_pr_err("Modem register notifier failed: %d\n", ret); } set_bit(ICNSS_SSR_REGISTERED, &priv->state); return ret; } static int icnss_modem_ssr_unregister_notifier(struct icnss_priv *priv) { if (!test_and_clear_bit(ICNSS_SSR_REGISTERED, &priv->state)) return 0; subsys_notif_unregister_notifier(priv->modem_notify_handler, &priv->modem_ssr_nb); priv->modem_notify_handler = NULL; return 0; } static int icnss_pdr_unregister_notifier(struct icnss_priv *priv) { int i; if (!test_and_clear_bit(ICNSS_PDR_REGISTERED, &priv->state)) return 0; for (i = 0; i < priv->total_domains; i++) service_notif_unregister_notifier( priv->service_notifier[i].handle, &priv->service_notifier_nb); kfree(priv->service_notifier); priv->service_notifier = NULL; return 0; } static int icnss_service_notifier_notify(struct notifier_block *nb, unsigned long notification, void *data) { struct icnss_priv *priv = container_of(nb, struct icnss_priv, service_notifier_nb); enum pd_subsys_state *state = data; struct icnss_event_pd_service_down_data *event_data; struct icnss_uevent_fw_down_data fw_down_data = {0}; enum icnss_pdr_cause_index cause = ICNSS_ROOT_PD_CRASH; icnss_pr_dbg("PD service notification: 0x%lx state: 0x%lx\n", notification, priv->state); if (notification != SERVREG_NOTIF_SERVICE_STATE_DOWN_V01) goto done; if (!priv->is_ssr) set_bit(ICNSS_PDR, &priv->state); event_data = kzalloc(sizeof(*event_data), GFP_KERNEL); if (event_data == NULL) return notifier_from_errno(-ENOMEM); event_data->crashed = true; if (state == NULL) { priv->stats.recovery.root_pd_crash++; goto event_post; } switch (*state) { case ROOT_PD_WDOG_BITE: priv->stats.recovery.root_pd_crash++; break; case ROOT_PD_SHUTDOWN: cause = ICNSS_ROOT_PD_SHUTDOWN; priv->stats.recovery.root_pd_shutdown++; event_data->crashed = false; break; case USER_PD_STATE_CHANGE: if (test_bit(ICNSS_HOST_TRIGGERED_PDR, &priv->state)) { cause = ICNSS_HOST_ERROR; priv->stats.recovery.pdr_host_error++; } else { cause = ICNSS_FW_CRASH; priv->stats.recovery.pdr_fw_crash++; } break; default: priv->stats.recovery.root_pd_crash++; break; } icnss_pr_info("PD service down, pd_state: %d, state: 0x%lx: cause: %s\n", *state, priv->state, icnss_pdr_cause[cause]); event_post: if (!test_bit(ICNSS_FW_DOWN, &priv->state)) { set_bit(ICNSS_FW_DOWN, &priv->state); icnss_ignore_fw_timeout(true); if (test_bit(ICNSS_FW_READY, &priv->state)) fw_down_data.crashed = event_data->crashed; icnss_call_driver_uevent(priv, ICNSS_UEVENT_FW_DOWN, &fw_down_data); } clear_bit(ICNSS_HOST_TRIGGERED_PDR, &priv->state); icnss_driver_event_post(priv, ICNSS_DRIVER_EVENT_PD_SERVICE_DOWN, ICNSS_EVENT_SYNC, event_data); done: if (notification == SERVREG_NOTIF_SERVICE_STATE_UP_V01) clear_bit(ICNSS_FW_DOWN, &priv->state); return NOTIFY_OK; } static int icnss_get_service_location_notify(struct notifier_block *nb, unsigned long opcode, void *data) { struct icnss_priv *priv = container_of(nb, struct icnss_priv, get_service_nb); struct pd_qmi_client_data *pd = data; int curr_state; int ret; int i; int j; bool duplicate; struct service_notifier_context *notifier; icnss_pr_dbg("Get service notify opcode: %lu, state: 0x%lx\n", opcode, priv->state); if (opcode != LOCATOR_UP) return NOTIFY_DONE; if (pd->total_domains == 0) { icnss_pr_err("Did not find any domains\n"); ret = -ENOENT; goto out; } notifier = kcalloc(pd->total_domains, sizeof(struct service_notifier_context), GFP_KERNEL); if (!notifier) { ret = -ENOMEM; goto out; } priv->service_notifier_nb.notifier_call = icnss_service_notifier_notify; for (i = 0; i < pd->total_domains; i++) { duplicate = false; for (j = i + 1; j < pd->total_domains; j++) { if (!strcmp(pd->domain_list[i].name, pd->domain_list[j].name)) duplicate = true; } if (duplicate) continue; icnss_pr_dbg("%d: domain_name: %s, instance_id: %d\n", i, pd->domain_list[i].name, pd->domain_list[i].instance_id); notifier[i].handle = service_notif_register_notifier(pd->domain_list[i].name, pd->domain_list[i].instance_id, &priv->service_notifier_nb, &curr_state); notifier[i].instance_id = pd->domain_list[i].instance_id; strlcpy(notifier[i].name, pd->domain_list[i].name, QMI_SERVREG_LOC_NAME_LENGTH_V01 + 1); if (IS_ERR(notifier[i].handle)) { icnss_pr_err("%d: Unable to register notifier for %s(0x%x)\n", i, pd->domain_list->name, pd->domain_list->instance_id); ret = PTR_ERR(notifier[i].handle); goto free_handle; } } priv->service_notifier = notifier; priv->total_domains = pd->total_domains; set_bit(ICNSS_PDR_REGISTERED, &priv->state); icnss_pr_dbg("PD notification registration happened, state: 0x%lx\n", priv->state); return NOTIFY_OK; free_handle: for (i = 0; i < pd->total_domains; i++) { if (notifier[i].handle) service_notif_unregister_notifier(notifier[i].handle, &priv->service_notifier_nb); } kfree(notifier); out: icnss_pr_err("PD restart not enabled: %d, state: 0x%lx\n", ret, priv->state); return NOTIFY_OK; } static int icnss_pd_restart_enable(struct icnss_priv *priv) { int ret; if (test_bit(SSR_ONLY, &priv->ctrl_params.quirks)) { icnss_pr_dbg("PDR disabled through module parameter\n"); return 0; } icnss_pr_dbg("Get service location, state: 0x%lx\n", priv->state); priv->get_service_nb.notifier_call = icnss_get_service_location_notify; ret = get_service_location(ICNSS_SERVICE_LOCATION_CLIENT_NAME, ICNSS_WLAN_SERVICE_NAME, &priv->get_service_nb); if (ret) { icnss_pr_err("Get service location failed: %d\n", ret); goto out; } return 0; out: icnss_pr_err("Failed to enable PD restart: %d\n", ret); return ret; } static int icnss_enable_recovery(struct icnss_priv *priv) { int ret; if (test_bit(RECOVERY_DISABLE, &priv->ctrl_params.quirks)) { icnss_pr_dbg("Recovery disabled through module parameter\n"); return 0; } if (test_bit(PDR_ONLY, &priv->ctrl_params.quirks)) { icnss_pr_dbg("SSR disabled through module parameter\n"); goto enable_pdr; } priv->msa0_dump_dev = create_ramdump_device("wcss_msa0", &priv->pdev->dev); if (!priv->msa0_dump_dev) return -ENOMEM; priv->m3_dump_dev_seg1 = create_ramdump_device( ICNSS_M3_SEGMENT(ICNSS_M3_SEGMENT_PHYAREG), &priv->pdev->dev); if (!priv->m3_dump_dev_seg1) return -ENOMEM; priv->m3_dump_dev_seg2 = create_ramdump_device( ICNSS_M3_SEGMENT(ICNSS_M3_SEGMENT_PHYA), &priv->pdev->dev); if (!priv->m3_dump_dev_seg2) return -ENOMEM; priv->m3_dump_dev_seg3 = create_ramdump_device( ICNSS_M3_SEGMENT(ICNSS_M3_SEGMENT_WMACREG), &priv->pdev->dev); if (!priv->m3_dump_dev_seg3) return -ENOMEM; priv->m3_dump_dev_seg4 = create_ramdump_device( ICNSS_M3_SEGMENT(ICNSS_M3_SEGMENT_WCSSDBG), &priv->pdev->dev); if (!priv->m3_dump_dev_seg4) return -ENOMEM; priv->m3_dump_dev_seg5 = create_ramdump_device( ICNSS_M3_SEGMENT(ICNSS_M3_SEGMENT_PHYAM3), &priv->pdev->dev); if (!priv->m3_dump_dev_seg5) return -ENOMEM; icnss_modem_ssr_register_notifier(priv); if (test_bit(SSR_ONLY, &priv->ctrl_params.quirks)) { icnss_pr_dbg("PDR disabled through module parameter\n"); return 0; } enable_pdr: ret = icnss_pd_restart_enable(priv); if (ret) return ret; return 0; } static int icnss_send_smp2p(struct icnss_priv *priv, enum icnss_smp2p_msg_id msg_id) { unsigned int value = 0; int ret; if (IS_ERR(priv->smp2p_info.smem_state)) return -EINVAL; if (test_bit(ICNSS_FW_DOWN, &priv->state)) return -ENODEV; value |= priv->smp2p_info.seq++; value <<= ICNSS_SMEM_SEQ_NO_POS; value |= msg_id; icnss_pr_vdbg1("Sending SMP2P value: 0x%X\n", value); ret = qcom_smem_state_update_bits( priv->smp2p_info.smem_state, ICNSS_SMEM_VALUE_MASK, value); if (ret) icnss_pr_vdbg1("Error in SMP2P send ret: %d\n", ret); return ret; } static int icnss_tcdev_get_max_state(struct thermal_cooling_device *tcdev, unsigned long *thermal_state) { struct icnss_thermal_cdev *icnss_tcdev = tcdev->devdata; *thermal_state = icnss_tcdev->max_thermal_state; return 0; } static int icnss_tcdev_get_cur_state(struct thermal_cooling_device *tcdev, unsigned long *thermal_state) { struct icnss_thermal_cdev *icnss_tcdev = tcdev->devdata; *thermal_state = icnss_tcdev->curr_thermal_state; return 0; } static int icnss_tcdev_set_cur_state(struct thermal_cooling_device *tcdev, unsigned long thermal_state) { struct icnss_thermal_cdev *icnss_tcdev = tcdev->devdata; struct device *dev = &penv->pdev->dev; int ret = 0; if (!penv->ops || !penv->ops->set_therm_cdev_state) return 0; icnss_pr_vdbg("Cooling device set current state: %ld,for cdev id %d", thermal_state, icnss_tcdev->tcdev_id); mutex_lock(&penv->tcdev_lock); icnss_tcdev->curr_thermal_state = thermal_state; ret = penv->ops->set_therm_cdev_state(dev, thermal_state, icnss_tcdev->tcdev_id); mutex_unlock(&penv->tcdev_lock); if (ret) icnss_pr_err("Setting Current Thermal State Failed: %d,for cdev id %d", ret, icnss_tcdev->tcdev_id); return 0; } static struct thermal_cooling_device_ops icnss_cooling_ops = { .get_max_state = icnss_tcdev_get_max_state, .get_cur_state = icnss_tcdev_get_cur_state, .set_cur_state = icnss_tcdev_set_cur_state, }; int icnss_thermal_cdev_register(struct device *dev, unsigned long max_state, int tcdev_id) { struct icnss_priv *priv = dev_get_drvdata(dev); struct icnss_thermal_cdev *icnss_tcdev = NULL; char cdev_node_name[THERMAL_NAME_LENGTH] = ""; struct device_node *dev_node; int ret = 0; icnss_tcdev = kzalloc(sizeof(*icnss_tcdev), GFP_KERNEL); if (!icnss_tcdev) return -ENOMEM; icnss_tcdev->tcdev_id = tcdev_id; icnss_tcdev->max_thermal_state = max_state; snprintf(cdev_node_name, THERMAL_NAME_LENGTH, "qcom,icnss_cdev%d", tcdev_id); dev_node = of_find_node_by_name(NULL, cdev_node_name); if (!dev_node) { icnss_pr_err("Failed to get cooling device node\n"); return -EINVAL; } icnss_pr_dbg("tcdev node->name=%s\n", dev_node->name); if (of_find_property(dev_node, "#cooling-cells", NULL)) { icnss_tcdev->tcdev = thermal_of_cooling_device_register( dev_node, cdev_node_name, icnss_tcdev, &icnss_cooling_ops); if (IS_ERR_OR_NULL(icnss_tcdev->tcdev)) { ret = PTR_ERR(icnss_tcdev->tcdev); icnss_pr_err("Cooling device register failed: %d, for cdev id %d\n", ret, icnss_tcdev->tcdev_id); } else { icnss_pr_dbg("Cooling device registered for cdev id %d", icnss_tcdev->tcdev_id); list_add(&icnss_tcdev->tcdev_list, &priv->icnss_tcdev_list); } } else { icnss_pr_dbg("Cooling device registration not supported"); ret = -EOPNOTSUPP; } return ret; } EXPORT_SYMBOL(icnss_thermal_cdev_register); void icnss_thermal_cdev_unregister(struct device *dev, int tcdev_id) { struct icnss_priv *priv = dev_get_drvdata(dev); struct icnss_thermal_cdev *icnss_tcdev = NULL; while (!list_empty(&priv->icnss_tcdev_list)) { icnss_tcdev = list_first_entry(&priv->icnss_tcdev_list, struct icnss_thermal_cdev, tcdev_list); thermal_cooling_device_unregister(icnss_tcdev->tcdev); list_del(&icnss_tcdev->tcdev_list); kfree(icnss_tcdev); } } EXPORT_SYMBOL(icnss_thermal_cdev_unregister); int icnss_get_curr_therm_cdev_state(struct device *dev, unsigned long *thermal_state, int tcdev_id) { struct icnss_priv *priv = dev_get_drvdata(dev); struct icnss_thermal_cdev *icnss_tcdev = NULL; mutex_lock(&priv->tcdev_lock); list_for_each_entry(icnss_tcdev, &priv->icnss_tcdev_list, tcdev_list) { if (icnss_tcdev->tcdev_id != tcdev_id) continue; *thermal_state = icnss_tcdev->curr_thermal_state; mutex_unlock(&priv->tcdev_lock); icnss_pr_dbg("Cooling device current state: %ld, for cdev id %d", icnss_tcdev->curr_thermal_state, tcdev_id); return 0; } mutex_unlock(&priv->tcdev_lock); icnss_pr_dbg("Cooling device ID not found: %d", tcdev_id); return -EINVAL; } EXPORT_SYMBOL(icnss_get_curr_therm_cdev_state); int icnss_qmi_send(struct device *dev, int type, void *cmd, int cmd_len, void *cb_ctx, int (*cb)(void *ctx, void *event, int event_len)) { struct icnss_priv *priv = icnss_get_plat_priv(); int ret; if (!priv) return -ENODEV; if (!test_bit(ICNSS_WLFW_CONNECTED, &priv->state)) return -EINVAL; priv->get_info_cb = cb; priv->get_info_cb_ctx = cb_ctx; ret = icnss_wlfw_get_info_send_sync(priv, type, cmd, cmd_len); if (ret) { priv->get_info_cb = NULL; priv->get_info_cb_ctx = NULL; } return ret; } EXPORT_SYMBOL(icnss_qmi_send); int __icnss_register_driver(struct icnss_driver_ops *ops, struct module *owner, const char *mod_name) { int ret = 0; struct icnss_priv *priv = icnss_get_plat_priv(); if (!priv || !priv->pdev) { ret = -ENODEV; goto out; } icnss_pr_dbg("Registering driver, state: 0x%lx\n", priv->state); if (priv->ops) { icnss_pr_err("Driver already registered\n"); ret = -EEXIST; goto out; } if (!ops->probe || !ops->remove) { ret = -EINVAL; goto out; } ret = icnss_driver_event_post(priv, ICNSS_DRIVER_EVENT_REGISTER_DRIVER, 0, ops); if (ret == -EINTR) ret = 0; out: return ret; } EXPORT_SYMBOL(__icnss_register_driver); int icnss_unregister_driver(struct icnss_driver_ops *ops) { int ret; struct icnss_priv *priv = icnss_get_plat_priv(); if (!priv || !priv->pdev) { ret = -ENODEV; goto out; } icnss_pr_dbg("Unregistering driver, state: 0x%lx\n", priv->state); if (!priv->ops) { icnss_pr_err("Driver not registered\n"); penv->ops = NULL; ret = -ENOENT; goto out; } ret = icnss_driver_event_post(priv, ICNSS_DRIVER_EVENT_UNREGISTER_DRIVER, ICNSS_EVENT_SYNC_UNINTERRUPTIBLE, NULL); out: return ret; } EXPORT_SYMBOL(icnss_unregister_driver); static struct icnss_msi_config msi_config = { .total_vectors = 28, .total_users = 2, .users = (struct icnss_msi_user[]) { { .name = "CE", .num_vectors = 10, .base_vector = 0 }, { .name = "DP", .num_vectors = 18, .base_vector = 10 }, }, }; static int icnss_get_msi_assignment(struct icnss_priv *priv) { priv->msi_config = &msi_config; return 0; } int icnss_get_user_msi_assignment(struct device *dev, char *user_name, int *num_vectors, u32 *user_base_data, u32 *base_vector) { struct icnss_priv *priv = dev_get_drvdata(dev); struct icnss_msi_config *msi_config; int idx; if (!priv) return -ENODEV; msi_config = priv->msi_config; if (!msi_config) { icnss_pr_err("MSI is not supported.\n"); return -EINVAL; } for (idx = 0; idx < msi_config->total_users; idx++) { if (strcmp(user_name, msi_config->users[idx].name) == 0) { *num_vectors = msi_config->users[idx].num_vectors; *user_base_data = msi_config->users[idx].base_vector + priv->msi_base_data; *base_vector = msi_config->users[idx].base_vector; icnss_pr_dbg("Assign MSI to user: %s, num_vectors: %d, user_base_data: %u, base_vector: %u\n", user_name, *num_vectors, *user_base_data, *base_vector); return 0; } } icnss_pr_err("Failed to find MSI assignment for %s!\n", user_name); return -EINVAL; } EXPORT_SYMBOL(icnss_get_user_msi_assignment); int icnss_get_msi_irq(struct device *dev, unsigned int vector) { struct icnss_priv *priv = dev_get_drvdata(dev); int irq_num; irq_num = priv->srng_irqs[vector]; icnss_pr_dbg("Get IRQ number %d for vector index %d\n", irq_num, vector); return irq_num; } EXPORT_SYMBOL(icnss_get_msi_irq); void icnss_get_msi_address(struct device *dev, u32 *msi_addr_low, u32 *msi_addr_high) { struct icnss_priv *priv = dev_get_drvdata(dev); *msi_addr_low = lower_32_bits(priv->msi_addr_iova); *msi_addr_high = upper_32_bits(priv->msi_addr_iova); } EXPORT_SYMBOL(icnss_get_msi_address); int icnss_ce_request_irq(struct device *dev, unsigned int ce_id, irqreturn_t (*handler)(int, void *), unsigned long flags, const char *name, void *ctx) { int ret = 0; unsigned int irq; struct ce_irq_list *irq_entry; struct icnss_priv *priv = dev_get_drvdata(dev); if (!priv || !priv->pdev) { ret = -ENODEV; goto out; } icnss_pr_vdbg("CE request IRQ: %d, state: 0x%lx\n", ce_id, priv->state); if (ce_id >= ICNSS_MAX_IRQ_REGISTRATIONS) { icnss_pr_err("Invalid CE ID, ce_id: %d\n", ce_id); ret = -EINVAL; goto out; } irq = priv->ce_irqs[ce_id]; irq_entry = &priv->ce_irq_list[ce_id]; if (irq_entry->handler || irq_entry->irq) { icnss_pr_err("IRQ already requested: %d, ce_id: %d\n", irq, ce_id); ret = -EEXIST; goto out; } ret = request_irq(irq, handler, flags, name, ctx); if (ret) { icnss_pr_err("IRQ request failed: %d, ce_id: %d, ret: %d\n", irq, ce_id, ret); goto out; } irq_entry->irq = irq; irq_entry->handler = handler; icnss_pr_vdbg("IRQ requested: %d, ce_id: %d\n", irq, ce_id); penv->stats.ce_irqs[ce_id].request++; out: return ret; } EXPORT_SYMBOL(icnss_ce_request_irq); int icnss_ce_free_irq(struct device *dev, unsigned int ce_id, void *ctx) { int ret = 0; unsigned int irq; struct ce_irq_list *irq_entry; if (!penv || !penv->pdev || !dev) { ret = -ENODEV; goto out; } icnss_pr_vdbg("CE free IRQ: %d, state: 0x%lx\n", ce_id, penv->state); if (ce_id >= ICNSS_MAX_IRQ_REGISTRATIONS) { icnss_pr_err("Invalid CE ID to free, ce_id: %d\n", ce_id); ret = -EINVAL; goto out; } irq = penv->ce_irqs[ce_id]; irq_entry = &penv->ce_irq_list[ce_id]; if (!irq_entry->handler || !irq_entry->irq) { icnss_pr_err("IRQ not requested: %d, ce_id: %d\n", irq, ce_id); ret = -EEXIST; goto out; } free_irq(irq, ctx); irq_entry->irq = 0; irq_entry->handler = NULL; penv->stats.ce_irqs[ce_id].free++; out: return ret; } EXPORT_SYMBOL(icnss_ce_free_irq); void icnss_enable_irq(struct device *dev, unsigned int ce_id) { unsigned int irq; if (!penv || !penv->pdev || !dev) { icnss_pr_err("Platform driver not initialized\n"); return; } icnss_pr_vdbg("Enable IRQ: ce_id: %d, state: 0x%lx\n", ce_id, penv->state); if (ce_id >= ICNSS_MAX_IRQ_REGISTRATIONS) { icnss_pr_err("Invalid CE ID to enable IRQ, ce_id: %d\n", ce_id); return; } penv->stats.ce_irqs[ce_id].enable++; irq = penv->ce_irqs[ce_id]; enable_irq(irq); } EXPORT_SYMBOL(icnss_enable_irq); void icnss_disable_irq(struct device *dev, unsigned int ce_id) { unsigned int irq; if (!penv || !penv->pdev || !dev) { icnss_pr_err("Platform driver not initialized\n"); return; } icnss_pr_vdbg("Disable IRQ: ce_id: %d, state: 0x%lx\n", ce_id, penv->state); if (ce_id >= ICNSS_MAX_IRQ_REGISTRATIONS) { icnss_pr_err("Invalid CE ID to disable IRQ, ce_id: %d\n", ce_id); return; } irq = penv->ce_irqs[ce_id]; disable_irq(irq); penv->stats.ce_irqs[ce_id].disable++; } EXPORT_SYMBOL(icnss_disable_irq); int icnss_get_soc_info(struct device *dev, struct icnss_soc_info *info) { char *fw_build_timestamp = NULL; struct icnss_priv *priv = dev_get_drvdata(dev); if (!priv) { icnss_pr_err("Platform driver not initialized\n"); return -EINVAL; } info->v_addr = priv->mem_base_va; info->p_addr = priv->mem_base_pa; info->chip_id = priv->chip_info.chip_id; info->chip_family = priv->chip_info.chip_family; info->board_id = priv->board_id; info->soc_id = priv->soc_id; info->fw_version = priv->fw_version_info.fw_version; fw_build_timestamp = priv->fw_version_info.fw_build_timestamp; fw_build_timestamp[WLFW_MAX_TIMESTAMP_LEN] = '\0'; strlcpy(info->fw_build_timestamp, priv->fw_version_info.fw_build_timestamp, WLFW_MAX_TIMESTAMP_LEN + 1); return 0; } EXPORT_SYMBOL(icnss_get_soc_info); int icnss_get_mhi_state(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); if (!priv) { icnss_pr_err("Platform driver not initialized\n"); return -EINVAL; } if (!priv->mhi_state_info_va) return -ENOMEM; return ioread32(priv->mhi_state_info_va); } EXPORT_SYMBOL(icnss_get_mhi_state); int icnss_set_fw_log_mode(struct device *dev, uint8_t fw_log_mode) { int ret; struct icnss_priv *priv = dev_get_drvdata(dev); if (!dev) return -ENODEV; if (test_bit(ICNSS_FW_DOWN, &penv->state) || !test_bit(ICNSS_FW_READY, &penv->state)) { icnss_pr_err("FW down, ignoring fw_log_mode state: 0x%lx\n", priv->state); return -EINVAL; } icnss_pr_dbg("FW log mode: %u\n", fw_log_mode); ret = wlfw_ini_send_sync_msg(priv, fw_log_mode); if (ret) icnss_pr_err("Fail to send ini, ret = %d, fw_log_mode: %u\n", ret, fw_log_mode); return ret; } EXPORT_SYMBOL(icnss_set_fw_log_mode); int icnss_force_wake_request(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); if (!dev) return -ENODEV; if (!priv) { icnss_pr_err("Platform driver not initialized\n"); return -EINVAL; } if (atomic_inc_not_zero(&priv->soc_wake_ref_count)) { icnss_pr_dbg("SOC already awake, Ref count: %d", atomic_read(&priv->soc_wake_ref_count)); return 0; } icnss_pr_dbg("Calling SOC Wake request"); icnss_soc_wake_event_post(priv, ICNSS_SOC_WAKE_REQUEST_EVENT, 0, NULL); return 0; } EXPORT_SYMBOL(icnss_force_wake_request); int icnss_force_wake_release(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); if (!dev) return -ENODEV; if (!priv) { icnss_pr_err("Platform driver not initialized\n"); return -EINVAL; } icnss_pr_dbg("Calling SOC Wake response"); if (icnss_atomic_dec_if_greater_one(&priv->soc_wake_ref_count)) { icnss_pr_dbg("SOC previous release pending, Ref count: %d", atomic_read(&priv->soc_wake_ref_count)); return 0; } icnss_soc_wake_event_post(priv, ICNSS_SOC_WAKE_RELEASE_EVENT, 0, NULL); return 0; } EXPORT_SYMBOL(icnss_force_wake_release); int icnss_is_device_awake(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); if (!priv) { icnss_pr_err("Platform driver not initialized\n"); return -EINVAL; } return atomic_read(&priv->soc_wake_ref_count); } EXPORT_SYMBOL(icnss_is_device_awake); int icnss_is_pci_ep_awake(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); if (!priv) { icnss_pr_err("Platform driver not initialized\n"); return -EINVAL; } if (!priv->mhi_state_info_va) return -ENOMEM; return ioread32(priv->mhi_state_info_va + ICNSS_PCI_EP_WAKE_OFFSET); } EXPORT_SYMBOL(icnss_is_pci_ep_awake); int icnss_athdiag_read(struct device *dev, uint32_t offset, uint32_t mem_type, uint32_t data_len, uint8_t *output) { int ret = 0; struct icnss_priv *priv = dev_get_drvdata(dev); if (priv->magic != ICNSS_MAGIC) { icnss_pr_err("Invalid drvdata for diag read: dev %pK, data %pK, magic 0x%x\n", dev, priv, priv->magic); return -EINVAL; } if (!output || data_len == 0 || data_len > WLFW_MAX_DATA_SIZE) { icnss_pr_err("Invalid parameters for diag read: output %pK, data_len %u\n", output, data_len); ret = -EINVAL; goto out; } if (!test_bit(ICNSS_FW_READY, &priv->state) || !test_bit(ICNSS_POWER_ON, &priv->state)) { icnss_pr_err("Invalid state for diag read: 0x%lx\n", priv->state); ret = -EINVAL; goto out; } ret = wlfw_athdiag_read_send_sync_msg(priv, offset, mem_type, data_len, output); out: return ret; } EXPORT_SYMBOL(icnss_athdiag_read); int icnss_athdiag_write(struct device *dev, uint32_t offset, uint32_t mem_type, uint32_t data_len, uint8_t *input) { int ret = 0; struct icnss_priv *priv = dev_get_drvdata(dev); if (priv->magic != ICNSS_MAGIC) { icnss_pr_err("Invalid drvdata for diag write: dev %pK, data %pK, magic 0x%x\n", dev, priv, priv->magic); return -EINVAL; } if (!input || data_len == 0 || data_len > WLFW_MAX_DATA_SIZE) { icnss_pr_err("Invalid parameters for diag write: input %pK, data_len %u\n", input, data_len); ret = -EINVAL; goto out; } if (!test_bit(ICNSS_FW_READY, &priv->state) || !test_bit(ICNSS_POWER_ON, &priv->state)) { icnss_pr_err("Invalid state for diag write: 0x%lx\n", priv->state); ret = -EINVAL; goto out; } ret = wlfw_athdiag_write_send_sync_msg(priv, offset, mem_type, data_len, input); out: return ret; } EXPORT_SYMBOL(icnss_athdiag_write); int icnss_wlan_enable(struct device *dev, struct icnss_wlan_enable_cfg *config, enum icnss_driver_mode mode, const char *host_version) { struct icnss_priv *priv = dev_get_drvdata(dev); if (test_bit(ICNSS_FW_DOWN, &priv->state) || !test_bit(ICNSS_FW_READY, &priv->state)) { icnss_pr_err("FW down, ignoring wlan_enable state: 0x%lx\n", priv->state); return -EINVAL; } if (test_bit(ICNSS_MODE_ON, &priv->state)) { icnss_pr_err("Already Mode on, ignoring wlan_enable state: 0x%lx\n", priv->state); return -EINVAL; } return icnss_send_wlan_enable_to_fw(priv, config, mode, host_version); } EXPORT_SYMBOL(icnss_wlan_enable); int icnss_wlan_disable(struct device *dev, enum icnss_driver_mode mode) { struct icnss_priv *priv = dev_get_drvdata(dev); if (test_bit(ICNSS_FW_DOWN, &priv->state)) { icnss_pr_dbg("FW down, ignoring wlan_disable state: 0x%lx\n", priv->state); return 0; } return icnss_send_wlan_disable_to_fw(priv); } EXPORT_SYMBOL(icnss_wlan_disable); bool icnss_is_qmi_disable(struct device *dev) { return test_bit(SKIP_QMI, &penv->ctrl_params.quirks) ? true : false; } EXPORT_SYMBOL(icnss_is_qmi_disable); int icnss_get_ce_id(struct device *dev, int irq) { int i; if (!penv || !penv->pdev || !dev) return -ENODEV; for (i = 0; i < ICNSS_MAX_IRQ_REGISTRATIONS; i++) { if (penv->ce_irqs[i] == irq) return i; } icnss_pr_err("No matching CE id for irq %d\n", irq); return -EINVAL; } EXPORT_SYMBOL(icnss_get_ce_id); int icnss_get_irq(struct device *dev, int ce_id) { int irq; if (!penv || !penv->pdev || !dev) return -ENODEV; if (ce_id >= ICNSS_MAX_IRQ_REGISTRATIONS) return -EINVAL; irq = penv->ce_irqs[ce_id]; return irq; } EXPORT_SYMBOL(icnss_get_irq); struct iommu_domain *icnss_smmu_get_domain(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); if (!priv) { icnss_pr_err("Invalid drvdata: dev %pK\n", dev); return NULL; } return priv->iommu_domain; } EXPORT_SYMBOL(icnss_smmu_get_domain); int icnss_smmu_map(struct device *dev, phys_addr_t paddr, uint32_t *iova_addr, size_t size) { struct icnss_priv *priv = dev_get_drvdata(dev); unsigned long iova; int prop_len = 0; size_t len; int ret = 0; if (!priv) { icnss_pr_err("Invalid drvdata: dev %pK, data %pK\n", dev, priv); return -EINVAL; } if (!iova_addr) { icnss_pr_err("iova_addr is NULL, paddr %pa, size %zu\n", &paddr, size); return -EINVAL; } len = roundup(size + paddr - rounddown(paddr, PAGE_SIZE), PAGE_SIZE); iova = roundup(priv->smmu_iova_ipa_current, PAGE_SIZE); if (of_get_property(dev->of_node, "qcom,iommu-geometry", &prop_len) && iova >= priv->smmu_iova_ipa_start + priv->smmu_iova_ipa_len) { icnss_pr_err("No IOVA space to map, iova %lx, smmu_iova_ipa_start %pad, smmu_iova_ipa_len %zu\n", iova, &priv->smmu_iova_ipa_start, priv->smmu_iova_ipa_len); return -ENOMEM; } icnss_pr_dbg("IOMMU Map: iova %lx, len %zu\n", iova, len); ret = iommu_map(priv->iommu_domain, iova, rounddown(paddr, PAGE_SIZE), len, IOMMU_READ | IOMMU_WRITE); if (ret) { icnss_pr_err("PA to IOVA mapping failed, ret %d\n", ret); return ret; } priv->smmu_iova_ipa_current = iova + len; *iova_addr = (uint32_t)(iova + paddr - rounddown(paddr, PAGE_SIZE)); icnss_pr_dbg("IOVA addr mapped to physical addr %lx\n", *iova_addr); return 0; } EXPORT_SYMBOL(icnss_smmu_map); int icnss_smmu_unmap(struct device *dev, uint32_t iova_addr, size_t size) { struct icnss_priv *priv = dev_get_drvdata(dev); unsigned long iova; size_t len, unmapped_len; if (!priv) { icnss_pr_err("Invalid drvdata: dev %pK, data %pK\n", dev, priv); return -EINVAL; } if (!iova_addr) { icnss_pr_err("iova_addr is NULL, size %zu\n", size); return -EINVAL; } len = roundup(size + iova_addr - rounddown(iova_addr, PAGE_SIZE), PAGE_SIZE); iova = rounddown(iova_addr, PAGE_SIZE); if (iova >= priv->smmu_iova_ipa_start + priv->smmu_iova_ipa_len) { icnss_pr_err("Out of IOVA space during unmap, iova %lx, smmu_iova_ipa_start %pad, smmu_iova_ipa_len %zu\n", iova, &priv->smmu_iova_ipa_start, priv->smmu_iova_ipa_len); return -ENOMEM; } icnss_pr_dbg("IOMMU Unmap: iova %lx, len %zu\n", iova, len); unmapped_len = iommu_unmap(priv->iommu_domain, iova, len); if (unmapped_len != len) { icnss_pr_err("Failed to unmap, %zu\n", unmapped_len); return -EINVAL; } priv->smmu_iova_ipa_current = iova; return 0; } EXPORT_SYMBOL(icnss_smmu_unmap); unsigned int icnss_socinfo_get_serial_number(struct device *dev) { return socinfo_get_serial_number(); } EXPORT_SYMBOL(icnss_socinfo_get_serial_number); int icnss_trigger_recovery(struct device *dev) { int ret = 0; struct icnss_priv *priv = dev_get_drvdata(dev); if (priv->magic != ICNSS_MAGIC) { icnss_pr_err("Invalid drvdata: magic 0x%x\n", priv->magic); ret = -EINVAL; goto out; } if (test_bit(ICNSS_PD_RESTART, &priv->state)) { icnss_pr_err("PD recovery already in progress: state: 0x%lx\n", priv->state); ret = -EPERM; goto out; } if (priv->device_id == WCN6750_DEVICE_ID) { icnss_pr_vdbg1("Initiate Root PD restart"); ret = icnss_send_smp2p(priv, ICNSS_TRIGGER_SSR); if (!ret) set_bit(ICNSS_HOST_TRIGGERED_PDR, &priv->state); return ret; } if (!test_bit(ICNSS_PDR_REGISTERED, &priv->state)) { icnss_pr_err("PD restart not enabled to trigger recovery: state: 0x%lx\n", priv->state); ret = -EOPNOTSUPP; goto out; } if (!priv->service_notifier || !priv->service_notifier[0].handle) { icnss_pr_err("Invalid handle during recovery, state: 0x%lx\n", priv->state); ret = -EINVAL; goto out; } icnss_pr_warn("Initiate PD restart at WLAN FW, state: 0x%lx\n", priv->state); /* * Initiate PDR, required only for the first instance */ ret = service_notif_pd_restart(priv->service_notifier[0].name, priv->service_notifier[0].instance_id); if (!ret) set_bit(ICNSS_HOST_TRIGGERED_PDR, &priv->state); icnss_pr_warn("PD restart request completed, ret: %d state: 0x%lx\n", ret, priv->state); out: return ret; } EXPORT_SYMBOL(icnss_trigger_recovery); int icnss_idle_shutdown(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); if (!priv) { icnss_pr_err("Invalid drvdata: dev %pK", dev); return -EINVAL; } if (priv->is_ssr || test_bit(ICNSS_PDR, &priv->state) || test_bit(ICNSS_REJUVENATE, &priv->state)) { icnss_pr_err("SSR/PDR is already in-progress during idle shutdown\n"); return -EBUSY; } return icnss_driver_event_post(priv, ICNSS_DRIVER_EVENT_IDLE_SHUTDOWN, ICNSS_EVENT_SYNC_UNINTERRUPTIBLE, NULL); } EXPORT_SYMBOL(icnss_idle_shutdown); int icnss_idle_restart(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); if (!priv) { icnss_pr_err("Invalid drvdata: dev %pK", dev); return -EINVAL; } if (priv->is_ssr || test_bit(ICNSS_PDR, &priv->state) || test_bit(ICNSS_REJUVENATE, &priv->state)) { icnss_pr_err("SSR/PDR is already in-progress during idle restart\n"); return -EBUSY; } return icnss_driver_event_post(priv, ICNSS_DRIVER_EVENT_IDLE_RESTART, ICNSS_EVENT_SYNC_UNINTERRUPTIBLE, NULL); } EXPORT_SYMBOL(icnss_idle_restart); int icnss_exit_power_save(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); icnss_pr_vdbg1("Calling Exit Power Save\n"); if (test_bit(ICNSS_PD_RESTART, &priv->state) || !test_bit(ICNSS_MODE_ON, &priv->state)) return 0; return icnss_send_smp2p(priv, ICNSS_POWER_SAVE_EXIT); } EXPORT_SYMBOL(icnss_exit_power_save); int icnss_prevent_l1(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); if (test_bit(ICNSS_PD_RESTART, &priv->state) || !test_bit(ICNSS_MODE_ON, &priv->state)) return 0; return icnss_send_smp2p(priv, ICNSS_PCI_EP_POWER_SAVE_EXIT); } EXPORT_SYMBOL(icnss_prevent_l1); void icnss_allow_l1(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); if (test_bit(ICNSS_PD_RESTART, &priv->state) || !test_bit(ICNSS_MODE_ON, &priv->state)) return; icnss_send_smp2p(priv, ICNSS_PCI_EP_POWER_SAVE_ENTER); } EXPORT_SYMBOL(icnss_allow_l1); void icnss_allow_recursive_recovery(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); priv->allow_recursive_recovery = true; icnss_pr_info("Recursive recovery allowed for WLAN\n"); } void icnss_disallow_recursive_recovery(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); priv->allow_recursive_recovery = false; icnss_pr_info("Recursive recovery disallowed for WLAN\n"); } static int icnss_create_shutdown_sysfs(struct icnss_priv *priv) { struct kobject *icnss_kobject; int ret = 0; atomic_set(&priv->is_shutdown, false); icnss_kobject = kobject_create_and_add("shutdown_wlan", kernel_kobj); if (!icnss_kobject) { icnss_pr_err("Unable to create kernel object"); return -EINVAL; } priv->icnss_kobject = icnss_kobject; ret = sysfs_create_file(icnss_kobject, &icnss_sysfs_attribute.attr); if (ret) { icnss_pr_err("Unable to create icnss sysfs file err:%d", ret); return ret; } return ret; } static void icnss_destroy_shutdown_sysfs(struct icnss_priv *priv) { struct kobject *icnss_kobject; icnss_kobject = priv->icnss_kobject; if (icnss_kobject) kobject_put(icnss_kobject); } static ssize_t qdss_tr_start_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct icnss_priv *priv = dev_get_drvdata(dev); wlfw_qdss_trace_start(priv); icnss_pr_dbg("Received QDSS start command\n"); return count; } static ssize_t qdss_tr_stop_store(struct device *dev, struct device_attribute *attr, const char *user_buf, size_t count) { struct icnss_priv *priv = dev_get_drvdata(dev); u32 option = 0; if (sscanf(user_buf, "%du", &option) != 1) return -EINVAL; wlfw_qdss_trace_stop(priv, option); icnss_pr_dbg("Received QDSS stop command\n"); return count; } static ssize_t qdss_conf_download_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct icnss_priv *priv = dev_get_drvdata(dev); icnss_wlfw_qdss_dnld_send_sync(priv); icnss_pr_dbg("Received QDSS download config command\n"); return count; } static ssize_t hw_trc_override_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct icnss_priv *priv = dev_get_drvdata(dev); int tmp = 0; if (sscanf(buf, "%du", &tmp) != 1) return -EINVAL; priv->hw_trc_override = tmp; icnss_pr_dbg("Received QDSS hw_trc_override indication\n"); return count; } static DEVICE_ATTR_WO(qdss_tr_start); static DEVICE_ATTR_WO(qdss_tr_stop); static DEVICE_ATTR_WO(qdss_conf_download); static DEVICE_ATTR_WO(hw_trc_override); static struct attribute *icnss_attrs[] = { &dev_attr_qdss_tr_start.attr, &dev_attr_qdss_tr_stop.attr, &dev_attr_qdss_conf_download.attr, &dev_attr_hw_trc_override.attr, NULL, }; static struct attribute_group icnss_attr_group = { .attrs = icnss_attrs, }; static int icnss_create_sysfs_link(struct icnss_priv *priv) { struct device *dev = &priv->pdev->dev; int ret; ret = sysfs_create_link(kernel_kobj, &dev->kobj, "icnss"); if (ret) { icnss_pr_err("Failed to create icnss link, err = %d\n", ret); goto out; } return 0; out: return ret; } static void icnss_remove_sysfs_link(struct icnss_priv *priv) { sysfs_remove_link(kernel_kobj, "icnss"); } int icnss_sysfs_create(struct icnss_priv *priv) { int ret = 0; ret = devm_device_add_group(&priv->pdev->dev, &icnss_attr_group); if (ret) { icnss_pr_err("Failed to create icnss device group, err = %d\n", ret); goto out; } icnss_create_sysfs_link(priv); ret = icnss_create_shutdown_sysfs(priv); if (ret) goto remove_icnss_group; return 0; remove_icnss_group: devm_device_remove_group(&priv->pdev->dev, &icnss_attr_group); out: return ret; } void icnss_sysfs_destroy(struct icnss_priv *priv) { icnss_destroy_shutdown_sysfs(priv); icnss_remove_sysfs_link(priv); devm_device_remove_group(&priv->pdev->dev, &icnss_attr_group); } static int icnss_get_vbatt_info(struct icnss_priv *priv) { struct adc_tm_chip *adc_tm_dev = NULL; struct iio_channel *channel = NULL; int ret = 0; adc_tm_dev = get_adc_tm(&priv->pdev->dev, "icnss"); if (PTR_ERR(adc_tm_dev) == -EPROBE_DEFER) { icnss_pr_err("adc_tm_dev probe defer\n"); return -EPROBE_DEFER; } if (IS_ERR(adc_tm_dev)) { ret = PTR_ERR(adc_tm_dev); icnss_pr_err("Not able to get ADC dev, VBATT monitoring is disabled: %d\n", ret); return ret; } channel = iio_channel_get(&priv->pdev->dev, "icnss"); if (PTR_ERR(channel) == -EPROBE_DEFER) { icnss_pr_err("channel probe defer\n"); return -EPROBE_DEFER; } if (IS_ERR(channel)) { ret = PTR_ERR(channel); icnss_pr_err("Not able to get VADC dev, VBATT monitoring is disabled: %d\n", ret); return ret; } priv->adc_tm_dev = adc_tm_dev; priv->channel = channel; return 0; } static int icnss_resource_parse(struct icnss_priv *priv) { int ret = 0, i = 0; struct platform_device *pdev = priv->pdev; struct device *dev = &pdev->dev; struct resource *res; u32 int_prop; if (of_property_read_bool(pdev->dev.of_node, "qcom,icnss-adc_tm")) { ret = icnss_get_vbatt_info(priv); if (ret == -EPROBE_DEFER) goto out; priv->vbatt_supported = true; } ret = icnss_get_vreg(priv); if (ret) { icnss_pr_err("Failed to get vreg, err = %d\n", ret); goto out; } ret = icnss_get_clk(priv); if (ret) { icnss_pr_err("Failed to get clocks, err = %d\n", ret); goto put_vreg; } if (priv->device_id == ADRASTEA_DEVICE_ID) { res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "membase"); if (!res) { icnss_pr_err("Memory base not found in DT\n"); ret = -EINVAL; goto put_clk; } priv->mem_base_pa = res->start; priv->mem_base_va = devm_ioremap(dev, priv->mem_base_pa, resource_size(res)); if (!priv->mem_base_va) { icnss_pr_err("Memory base ioremap failed: phy addr: %pa\n", &priv->mem_base_pa); ret = -EINVAL; goto put_clk; } icnss_pr_dbg("MEM_BASE pa: %pa, va: 0x%pK\n", &priv->mem_base_pa, priv->mem_base_va); for (i = 0; i < ICNSS_MAX_IRQ_REGISTRATIONS; i++) { res = platform_get_resource(priv->pdev, IORESOURCE_IRQ, i); if (!res) { icnss_pr_err("Fail to get IRQ-%d\n", i); ret = -ENODEV; goto put_clk; } else { priv->ce_irqs[i] = res->start; } } } else if (priv->device_id == WCN6750_DEVICE_ID) { res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "msi_addr"); if (!res) { icnss_pr_err("MSI address not found in DT\n"); ret = -EINVAL; goto put_clk; } priv->msi_addr_pa = res->start; priv->msi_addr_iova = dma_map_resource(dev, priv->msi_addr_pa, PAGE_SIZE, DMA_FROM_DEVICE, 0); if (dma_mapping_error(dev, priv->msi_addr_iova)) { icnss_pr_err("MSI: failed to map msi address\n"); priv->msi_addr_iova = 0; ret = -ENOMEM; goto put_clk; } icnss_pr_dbg("MSI Addr pa: %pa, iova: 0x%pK\n", &priv->msi_addr_pa, priv->msi_addr_iova); ret = of_property_read_u32_index(dev->of_node, "interrupts", 1, &int_prop); if (ret) { icnss_pr_dbg("Read interrupt prop failed"); goto put_clk; } priv->msi_base_data = int_prop + 32; icnss_pr_dbg(" MSI Base Data: %d, IRQ Index: %d\n", priv->msi_base_data, int_prop); icnss_get_msi_assignment(priv); for (i = 0; i < msi_config.total_vectors; i++) { res = platform_get_resource(priv->pdev, IORESOURCE_IRQ, i); if (!res) { icnss_pr_err("Fail to get IRQ-%d\n", i); ret = -ENODEV; goto put_clk; } else { priv->srng_irqs[i] = res->start; } } } return 0; put_clk: icnss_put_clk(priv); put_vreg: icnss_put_vreg(priv); out: return ret; } static int icnss_msa_dt_parse(struct icnss_priv *priv) { int ret = 0; struct platform_device *pdev = priv->pdev; struct device *dev = &pdev->dev; struct device_node *np = NULL; u64 prop_size = 0; const __be32 *addrp = NULL; np = of_parse_phandle(dev->of_node, "qcom,wlan-msa-fixed-region", 0); if (np) { addrp = of_get_address(np, 0, &prop_size, NULL); if (!addrp) { icnss_pr_err("Failed to get assigned-addresses or property\n"); ret = -EINVAL; of_node_put(np); goto out; } priv->msa_pa = of_translate_address(np, addrp); if (priv->msa_pa == OF_BAD_ADDR) { icnss_pr_err("Failed to translate MSA PA from device-tree\n"); ret = -EINVAL; of_node_put(np); goto out; } of_node_put(np); priv->msa_va = memremap(priv->msa_pa, (unsigned long)prop_size, MEMREMAP_WT); if (!priv->msa_va) { icnss_pr_err("MSA PA ioremap failed: phy addr: %pa\n", &priv->msa_pa); ret = -EINVAL; goto out; } priv->msa_mem_size = prop_size; } else { ret = of_property_read_u32(dev->of_node, "qcom,wlan-msa-memory", &priv->msa_mem_size); if (ret || priv->msa_mem_size == 0) { icnss_pr_err("Fail to get MSA Memory Size: %u ret: %d\n", priv->msa_mem_size, ret); goto out; } priv->msa_va = dmam_alloc_coherent(&pdev->dev, priv->msa_mem_size, &priv->msa_pa, GFP_KERNEL); if (!priv->msa_va) { icnss_pr_err("DMA alloc failed for MSA\n"); ret = -ENOMEM; goto out; } } icnss_pr_dbg("MSA pa: %pa, MSA va: 0x%pK MSA Memory Size: 0x%x\n", &priv->msa_pa, (void *)priv->msa_va, priv->msa_mem_size); return 0; out: return ret; } static int icnss_smmu_fault_handler(struct iommu_domain *domain, struct device *dev, unsigned long iova, int flags, void *handler_token) { struct icnss_priv *priv = handler_token; struct icnss_uevent_fw_down_data fw_down_data = {0}; icnss_fatal_err("SMMU fault happened with IOVA 0x%lx\n", iova); if (!priv) { icnss_pr_err("priv is NULL\n"); return -ENODEV; } if (test_bit(ICNSS_FW_READY, &priv->state)) { fw_down_data.crashed = true; icnss_call_driver_uevent(priv, ICNSS_UEVENT_FW_DOWN, &fw_down_data); } icnss_trigger_recovery(&priv->pdev->dev); /* IOMMU driver requires non-zero return value to print debug info. */ return -EINVAL; } static int icnss_smmu_dt_parse(struct icnss_priv *priv) { int ret = 0; struct platform_device *pdev = priv->pdev; struct device *dev = &pdev->dev; const char *iommu_dma_type; struct resource *res; u32 addr_win[2]; ret = of_property_read_u32_array(dev->of_node, "qcom,iommu-dma-addr-pool", addr_win, ARRAY_SIZE(addr_win)); if (ret) { icnss_pr_err("SMMU IOVA base not found\n"); } else { priv->smmu_iova_start = addr_win[0]; priv->smmu_iova_len = addr_win[1]; icnss_pr_dbg("SMMU IOVA start: %pa, len: %zx\n", &priv->smmu_iova_start, priv->smmu_iova_len); priv->iommu_domain = iommu_get_domain_for_dev(&pdev->dev); ret = of_property_read_string(dev->of_node, "qcom,iommu-dma", &iommu_dma_type); if (!ret && !strcmp("fastmap", iommu_dma_type)) { icnss_pr_dbg("SMMU S1 stage enabled\n"); priv->smmu_s1_enable = true; if (priv->device_id == WCN6750_DEVICE_ID) iommu_set_fault_handler(priv->iommu_domain, icnss_smmu_fault_handler, priv); } res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smmu_iova_ipa"); if (!res) { icnss_pr_err("SMMU IOVA IPA not found\n"); } else { priv->smmu_iova_ipa_start = res->start; priv->smmu_iova_ipa_current = res->start; priv->smmu_iova_ipa_len = resource_size(res); icnss_pr_dbg("SMMU IOVA IPA start: %pa, len: %zx\n", &priv->smmu_iova_ipa_start, priv->smmu_iova_ipa_len); } } return 0; } int icnss_get_iova(struct icnss_priv *priv, u64 *addr, u64 *size) { if (!priv) return -ENODEV; if (!priv->smmu_iova_len) return -EINVAL; *addr = priv->smmu_iova_start; *size = priv->smmu_iova_len; return 0; } int icnss_get_iova_ipa(struct icnss_priv *priv, u64 *addr, u64 *size) { if (!priv) return -ENODEV; if (!priv->smmu_iova_ipa_len) return -EINVAL; *addr = priv->smmu_iova_ipa_start; *size = priv->smmu_iova_ipa_len; return 0; } static const struct platform_device_id icnss_platform_id_table[] = { { .name = "wcn6750", .driver_data = WCN6750_DEVICE_ID, }, { .name = "adrastea", .driver_data = ADRASTEA_DEVICE_ID, }, { }, }; static const struct of_device_id icnss_dt_match[] = { { .compatible = "qcom,wcn6750", .data = (void *)&icnss_platform_id_table[0]}, { .compatible = "qcom,icnss", .data = (void *)&icnss_platform_id_table[1]}, { }, }; MODULE_DEVICE_TABLE(of, icnss_dt_match); static void icnss_init_control_params(struct icnss_priv *priv) { priv->ctrl_params.qmi_timeout = WLFW_TIMEOUT; priv->ctrl_params.quirks = ICNSS_QUIRKS_DEFAULT; priv->ctrl_params.bdf_type = ICNSS_BDF_TYPE_DEFAULT; if (of_property_read_bool(priv->pdev->dev.of_node, "cnss-daemon-support")) { priv->ctrl_params.quirks |= BIT(ENABLE_DAEMON_SUPPORT); } } static inline void icnss_get_smp2p_info(struct icnss_priv *priv) { priv->smp2p_info.smem_state = qcom_smem_state_get(&priv->pdev->dev, "wlan-smp2p-out", &priv->smp2p_info.smem_bit); if (IS_ERR(priv->smp2p_info.smem_state)) { icnss_pr_vdbg1("Failed to get smem state %d", PTR_ERR(priv->smp2p_info.smem_state)); } } static inline void icnss_runtime_pm_init(struct icnss_priv *priv) { pm_runtime_get_sync(&priv->pdev->dev); pm_runtime_forbid(&priv->pdev->dev); pm_runtime_set_active(&priv->pdev->dev); pm_runtime_enable(&priv->pdev->dev); } static inline void icnss_runtime_pm_deinit(struct icnss_priv *priv) { pm_runtime_disable(&priv->pdev->dev); pm_runtime_allow(&priv->pdev->dev); pm_runtime_put_sync(&priv->pdev->dev); } static int icnss_probe(struct platform_device *pdev) { int ret = 0; struct device *dev = &pdev->dev; struct icnss_priv *priv; const struct of_device_id *of_id; const struct platform_device_id *device_id; if (dev_get_drvdata(dev)) { icnss_pr_err("Driver is already initialized\n"); return -EEXIST; } of_id = of_match_device(icnss_dt_match, &pdev->dev); if (!of_id || !of_id->data) { icnss_pr_err("Failed to find of match device!\n"); ret = -ENODEV; goto out_reset_drvdata; } device_id = of_id->data; icnss_pr_dbg("Platform driver probe\n"); priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->magic = ICNSS_MAGIC; dev_set_drvdata(dev, priv); priv->pdev = pdev; priv->device_id = device_id->driver_data; INIT_LIST_HEAD(&priv->vreg_list); INIT_LIST_HEAD(&priv->clk_list); icnss_allow_recursive_recovery(dev); icnss_init_control_params(priv); ret = icnss_resource_parse(priv); if (ret) goto out_reset_drvdata; ret = icnss_msa_dt_parse(priv); if (ret) goto out_free_resources; ret = icnss_smmu_dt_parse(priv); if (ret) goto out_free_resources; spin_lock_init(&priv->event_lock); spin_lock_init(&priv->on_off_lock); spin_lock_init(&priv->soc_wake_msg_lock); mutex_init(&priv->dev_lock); mutex_init(&priv->tcdev_lock); priv->event_wq = alloc_workqueue("icnss_driver_event", WQ_UNBOUND, 1); if (!priv->event_wq) { icnss_pr_err("Workqueue creation failed\n"); ret = -EFAULT; goto smmu_cleanup; } INIT_WORK(&priv->event_work, icnss_driver_event_work); INIT_LIST_HEAD(&priv->event_list); priv->soc_wake_wq = alloc_workqueue("icnss_soc_wake_event", WQ_UNBOUND, 1); if (!priv->soc_wake_wq) { icnss_pr_err("Soc wake Workqueue creation failed\n"); ret = -EFAULT; goto out_destroy_wq; } INIT_WORK(&priv->soc_wake_msg_work, icnss_soc_wake_msg_work); INIT_LIST_HEAD(&priv->soc_wake_msg_list); ret = icnss_register_fw_service(priv); if (ret < 0) { icnss_pr_err("fw service registration failed: %d\n", ret); goto out_destroy_soc_wq; } icnss_enable_recovery(priv); icnss_debugfs_create(priv); icnss_sysfs_create(priv); ret = device_init_wakeup(&priv->pdev->dev, true); if (ret) icnss_pr_err("Failed to init platform device wakeup source, err = %d\n", ret); icnss_set_plat_priv(priv); init_completion(&priv->unblock_shutdown); if (priv->device_id == WCN6750_DEVICE_ID) { ret = icnss_genl_init(); if (ret < 0) icnss_pr_err("ICNSS genl init failed %d\n", ret); icnss_runtime_pm_init(priv); icnss_get_cpr_info(priv); icnss_get_smp2p_info(priv); set_bit(ICNSS_COLD_BOOT_CAL, &priv->state); } INIT_LIST_HEAD(&priv->icnss_tcdev_list); icnss_pr_info("Platform driver probed successfully\n"); return 0; out_destroy_soc_wq: destroy_workqueue(priv->soc_wake_wq); out_destroy_wq: destroy_workqueue(priv->event_wq); smmu_cleanup: priv->iommu_domain = NULL; out_free_resources: icnss_put_resources(priv); out_reset_drvdata: dev_set_drvdata(dev, NULL); return ret; } static int icnss_remove(struct platform_device *pdev) { struct icnss_priv *priv = dev_get_drvdata(&pdev->dev); icnss_pr_info("Removing driver: state: 0x%lx\n", priv->state); if (priv->device_id == WCN6750_DEVICE_ID) { icnss_genl_exit(); icnss_runtime_pm_deinit(priv); } device_init_wakeup(&priv->pdev->dev, false); icnss_debugfs_destroy(priv); icnss_sysfs_destroy(priv); complete_all(&priv->unblock_shutdown); icnss_modem_ssr_unregister_notifier(priv); destroy_ramdump_device(priv->msa0_dump_dev); destroy_ramdump_device(priv->m3_dump_dev_seg1); destroy_ramdump_device(priv->m3_dump_dev_seg2); destroy_ramdump_device(priv->m3_dump_dev_seg3); destroy_ramdump_device(priv->m3_dump_dev_seg4); destroy_ramdump_device(priv->m3_dump_dev_seg5); icnss_pdr_unregister_notifier(priv); icnss_unregister_fw_service(priv); if (priv->event_wq) destroy_workqueue(priv->event_wq); if (priv->soc_wake_wq) destroy_workqueue(priv->soc_wake_wq); priv->iommu_domain = NULL; icnss_hw_power_off(priv); icnss_put_resources(priv); dev_set_drvdata(&pdev->dev, NULL); return 0; } #ifdef CONFIG_PM_SLEEP static int icnss_pm_suspend(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); int ret = 0; if (priv->magic != ICNSS_MAGIC) { icnss_pr_err("Invalid drvdata for pm suspend: dev %pK, data %pK, magic 0x%x\n", dev, priv, priv->magic); return -EINVAL; } icnss_pr_vdbg("PM Suspend, state: 0x%lx\n", priv->state); if (!priv->ops || !priv->ops->pm_suspend || IS_ERR(priv->smp2p_info.smem_state) || !test_bit(ICNSS_DRIVER_PROBED, &priv->state)) return 0; ret = priv->ops->pm_suspend(dev); if (ret == 0) { if (priv->device_id == WCN6750_DEVICE_ID) { if (test_bit(ICNSS_PD_RESTART, &priv->state) || !test_bit(ICNSS_MODE_ON, &priv->state)) return 0; ret = icnss_send_smp2p(priv, ICNSS_POWER_SAVE_ENTER); } priv->stats.pm_suspend++; set_bit(ICNSS_PM_SUSPEND, &priv->state); } else { priv->stats.pm_suspend_err++; } return ret; } static int icnss_pm_resume(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); int ret = 0; if (priv->magic != ICNSS_MAGIC) { icnss_pr_err("Invalid drvdata for pm resume: dev %pK, data %pK, magic 0x%x\n", dev, priv, priv->magic); return -EINVAL; } icnss_pr_vdbg("PM resume, state: 0x%lx\n", priv->state); if (!priv->ops || !priv->ops->pm_resume || IS_ERR(priv->smp2p_info.smem_state) || !test_bit(ICNSS_DRIVER_PROBED, &priv->state)) goto out; ret = priv->ops->pm_resume(dev); out: if (ret == 0) { priv->stats.pm_resume++; clear_bit(ICNSS_PM_SUSPEND, &priv->state); } else { priv->stats.pm_resume_err++; } return ret; } static int icnss_pm_suspend_noirq(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); int ret = 0; if (priv->magic != ICNSS_MAGIC) { icnss_pr_err("Invalid drvdata for pm suspend_noirq: dev %pK, data %pK, magic 0x%x\n", dev, priv, priv->magic); return -EINVAL; } icnss_pr_vdbg("PM suspend_noirq, state: 0x%lx\n", priv->state); if (!priv->ops || !priv->ops->suspend_noirq || !test_bit(ICNSS_DRIVER_PROBED, &priv->state)) goto out; ret = priv->ops->suspend_noirq(dev); out: if (ret == 0) { priv->stats.pm_suspend_noirq++; set_bit(ICNSS_PM_SUSPEND_NOIRQ, &priv->state); } else { priv->stats.pm_suspend_noirq_err++; } return ret; } static int icnss_pm_resume_noirq(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); int ret = 0; if (priv->magic != ICNSS_MAGIC) { icnss_pr_err("Invalid drvdata for pm resume_noirq: dev %pK, data %pK, magic 0x%x\n", dev, priv, priv->magic); return -EINVAL; } icnss_pr_vdbg("PM resume_noirq, state: 0x%lx\n", priv->state); if (!priv->ops || !priv->ops->resume_noirq || !test_bit(ICNSS_DRIVER_PROBED, &priv->state)) goto out; ret = priv->ops->resume_noirq(dev); out: if (ret == 0) { priv->stats.pm_resume_noirq++; clear_bit(ICNSS_PM_SUSPEND_NOIRQ, &priv->state); } else { priv->stats.pm_resume_noirq_err++; } return ret; } static int icnss_pm_runtime_suspend(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); int ret = 0; if (priv->magic != ICNSS_MAGIC) { icnss_pr_err("Invalid drvdata for runtime suspend: dev %pK, data %pK, magic 0x%x\n", dev, priv, priv->magic); return -EINVAL; } if (!priv->ops || !priv->ops->runtime_suspend || IS_ERR(priv->smp2p_info.smem_state)) goto out; icnss_pr_vdbg("Runtime suspend\n"); ret = priv->ops->runtime_suspend(dev); if (!ret) { if (test_bit(ICNSS_PD_RESTART, &priv->state) || !test_bit(ICNSS_MODE_ON, &priv->state)) return 0; ret = icnss_send_smp2p(priv, ICNSS_POWER_SAVE_ENTER); } out: return ret; } static int icnss_pm_runtime_resume(struct device *dev) { struct icnss_priv *priv = dev_get_drvdata(dev); int ret = 0; if (priv->magic != ICNSS_MAGIC) { icnss_pr_err("Invalid drvdata for runtime resume: dev %pK, data %pK, magic 0x%x\n", dev, priv, priv->magic); return -EINVAL; } if (!priv->ops || !priv->ops->runtime_resume || IS_ERR(priv->smp2p_info.smem_state)) goto out; icnss_pr_vdbg("Runtime resume, state: 0x%lx\n", priv->state); ret = priv->ops->runtime_resume(dev); out: return ret; } static int icnss_pm_runtime_idle(struct device *dev) { icnss_pr_vdbg("Runtime idle\n"); pm_request_autosuspend(dev); return -EBUSY; } #endif #ifdef CONFIG_CNSS_QCA6750 static const struct dev_pm_ops icnss_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(icnss_pm_suspend, icnss_pm_resume) SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(icnss_pm_suspend_noirq, icnss_pm_resume_noirq) SET_RUNTIME_PM_OPS(icnss_pm_runtime_suspend, icnss_pm_runtime_resume, icnss_pm_runtime_idle) }; #else static const struct dev_pm_ops icnss_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(icnss_pm_suspend, icnss_pm_resume) SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(icnss_pm_suspend_noirq, icnss_pm_resume_noirq) }; #endif static struct platform_driver icnss_driver = { .probe = icnss_probe, .remove = icnss_remove, .driver = { .name = "icnss2", .pm = &icnss_pm_ops, .of_match_table = icnss_dt_match, }, }; static int __init icnss_initialize(void) { icnss_debug_init(); return platform_driver_register(&icnss_driver); } static void __exit icnss_exit(void) { platform_driver_unregister(&icnss_driver); icnss_debug_deinit(); } module_init(icnss_initialize); module_exit(icnss_exit); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION(DEVICE "iWCN CORE platform driver");