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Tue, 12 Sep 2023 09:49:48 +0000 Received: from ME3P282MB2703.AUSP282.PROD.OUTLOOK.COM ([fe80::68b4:6263:97f:9a45]) by ME3P282MB2703.AUSP282.PROD.OUTLOOK.COM ([fe80::68b4:6263:97f:9a45%3]) with mapi id 15.20.6768.036; Tue, 12 Sep 2023 09:49:48 +0000 From: Jinjian Song To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, corbet@lwn.net, loic.poulain@linaro.org, ryazanov.s.a@gmail.com Cc: jiri@resnulli.us, johannes@sipsolutions.net, chandrashekar.devegowda@intel.com, linuxwwan@intel.com, chiranjeevi.rapolu@linux.intel.com, haijun.liu@mediatek.com, m.chetan.kumar@linux.intel.com, ricardo.martinez@linux.intel.com, netdev@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, nmarupaka@google.com, vsankar@lenovo.com, danielwinkler@google.com, Jinjian Song Subject: [net-next v4 4/5] net: wwan: t7xx: Adds sysfs attribute of modem event Date: Tue, 12 Sep 2023 17:48:44 +0800 Message-ID: X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230912094845.11233-1-songjinjian@hotmail.com> References: <20230912094845.11233-1-songjinjian@hotmail.com> X-TMN: [ggug/LKLf5lizIaW4an3zaN0VwkXRSr+] X-ClientProxiedBy: SI2PR01CA0048.apcprd01.prod.exchangelabs.com (2603:1096:4:193::17) To ME3P282MB2703.AUSP282.PROD.OUTLOOK.COM (2603:10c6:220:16b::5) X-Microsoft-Original-Message-ID: <20230912094845.11233-5-songjinjian@hotmail.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: ME3P282MB2703:EE_|SY4P282MB2981:EE_ X-MS-Office365-Filtering-Correlation-Id: 3e3ea742-ac44-4d32-ee90-08dbb37599ec X-Microsoft-Antispam: BCL:0; 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Provides sysfs attribute on user space to query the event from modem about flashing/coredump/reset. Base on the v5 patch version of follow series: 'net: wwan: t7xx: fw flashing & coredump support' (https://patchwork.kernel.org/project/netdevbpf/patch/fc8bbb0b66a5ff3a489ea9857d79b374508090ef.1674307425.git.m.chetan.kumar@linux.intel.com/) Signed-off-by: Jinjian Song --- v4: * no change v3: * no change v2: * rename struct name from devlink to flash_dump --- drivers/net/wwan/t7xx/t7xx_modem_ops.c | 1 + drivers/net/wwan/t7xx/t7xx_pci.c | 62 ++++++++++++++++++++ drivers/net/wwan/t7xx/t7xx_pci.h | 17 ++++++ drivers/net/wwan/t7xx/t7xx_port_flash_dump.c | 14 +++++ drivers/net/wwan/t7xx/t7xx_port_flash_dump.h | 1 + drivers/net/wwan/t7xx/t7xx_state_monitor.c | 7 +++ 6 files changed, 102 insertions(+) diff --git a/drivers/net/wwan/t7xx/t7xx_modem_ops.c b/drivers/net/wwan/t7xx/t7xx_modem_ops.c index cbd65aa48721..4de75874f1b5 100644 --- a/drivers/net/wwan/t7xx/t7xx_modem_ops.c +++ b/drivers/net/wwan/t7xx/t7xx_modem_ops.c @@ -192,6 +192,7 @@ static irqreturn_t t7xx_rgu_isr_thread(int irq, void *data) { struct t7xx_pci_dev *t7xx_dev = data; + atomic_set(&t7xx_dev->event, T7XX_RESET); msleep(RGU_RESET_DELAY_MS); t7xx_reset_device_via_pmic(t7xx_dev); return IRQ_HANDLED; diff --git a/drivers/net/wwan/t7xx/t7xx_pci.c b/drivers/net/wwan/t7xx/t7xx_pci.c index 845d1555f134..e5579e04f82d 100644 --- a/drivers/net/wwan/t7xx/t7xx_pci.c +++ b/drivers/net/wwan/t7xx/t7xx_pci.c @@ -2,6 +2,7 @@ /* * Copyright (c) 2021, MediaTek Inc. * Copyright (c) 2021-2022, Intel Corporation. + * Copyright (c) 2023, Fibocom Wireless Inc. * * Authors: * Haijun Liu @@ -14,6 +15,7 @@ * Chiranjeevi Rapolu * Eliot Lee * Moises Veleta + * Jinjian Song */ #include @@ -60,6 +62,57 @@ enum t7xx_pm_state { MTK_PM_RESUMED, }; +static ssize_t t7xx_event_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + enum t7xx_event event = T7XX_UNKNOWN; + struct pci_dev *pdev; + struct t7xx_pci_dev *t7xx_dev; + + pdev = to_pci_dev(dev); + t7xx_dev = pci_get_drvdata(pdev); + if (!t7xx_dev) + return -ENODEV; + + event = atomic_read(&t7xx_dev->event); + if (event == T7XX_READY) { + return sprintf(buf, "T7XX_MODEM_READY\n"); + } else if (event == T7XX_RESET) { + return sprintf(buf, "T7XX_RESET\n"); + } else if (event == T7XX_FASTBOOT_DL_MODE) { + return sprintf(buf, "T7XX_MODEM_FASTBOOT_DL_MODE\n"); + } else if (event == T7XX_FLASH_SUCCESS) { + return sprintf(buf, "T7XX_FLASHING_SUCCESS\n"); + } else if (event == T7XX_FLASH_FAILURE) { + return sprintf(buf, "T7XX_FLASHING_FAILURE\n"); + } else if (event == T7XX_FASTBOOT_DUMP_MODE) { + return sprintf(buf, "T7XX_MODEM_FASTBOOT_DUMP_MODE\n"); + } else if (event == T7XX_MRDUMP_READY) { + return sprintf(buf, "T7XX_MRDUMP_READY size:%zu\n", + t7xx_dev->flash_dump->regions[T7XX_MRDUMP_INDEX].info->dump_size); + } else if (event == T7XX_LKDUMP_READY) { + return sprintf(buf, "T7XX_LKDUMP_READY size:%zu\n", + t7xx_dev->flash_dump->regions[T7XX_LKDUMP_INDEX].info->dump_size); + } else if (event == T7XX_MRDUMP_DISCARD) { + return sprintf(buf, "T7XX_MRDUMP_DISCARDED\n"); + } else if (event == T7XX_LKDUMP_DISCARD) { + return sprintf(buf, "T7XX_LKDUMP_DISCARDED\n"); + } + + return sprintf(buf, "T7XX_UNKNOWN\n"); +} + +static DEVICE_ATTR_RO(t7xx_event); + +static struct attribute *t7xx_event_attr[] = { + &dev_attr_t7xx_event.attr, + NULL +}; + +static const struct attribute_group t7xx_event_attribute_group = { + .attrs = t7xx_event_attr, +}; + static void t7xx_dev_set_sleep_capability(struct t7xx_pci_dev *t7xx_dev, bool enable) { void __iomem *ctrl_reg = IREG_BASE(t7xx_dev) + T7XX_PCIE_MISC_CTRL; @@ -734,8 +787,17 @@ static int t7xx_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) t7xx_pcie_mac_interrupts_dis(t7xx_dev); + ret = sysfs_create_group(&t7xx_dev->pdev->dev.kobj, + &t7xx_event_attribute_group); + if (ret) { + t7xx_md_exit(t7xx_dev); + goto err_devlink_unregister; + } + ret = t7xx_interrupt_init(t7xx_dev); if (ret) { + sysfs_remove_group(&t7xx_dev->pdev->dev.kobj, + &t7xx_event_attribute_group); t7xx_md_exit(t7xx_dev); goto err_devlink_unregister; } diff --git a/drivers/net/wwan/t7xx/t7xx_pci.h b/drivers/net/wwan/t7xx/t7xx_pci.h index 28f22a2dc493..b7c78a9530f3 100644 --- a/drivers/net/wwan/t7xx/t7xx_pci.h +++ b/drivers/net/wwan/t7xx/t7xx_pci.h @@ -2,6 +2,7 @@ * * Copyright (c) 2021, MediaTek Inc. * Copyright (c) 2021-2022, Intel Corporation. + * Copyright (c) 2023, Fibocom Wireless Inc. * * Authors: * Haijun Liu @@ -12,6 +13,7 @@ * Amir Hanania * Chiranjeevi Rapolu * Moises Veleta + * Jinjian Song */ #ifndef __T7XX_PCI_H__ @@ -84,6 +86,7 @@ struct t7xx_pci_dev { struct dentry *debugfs_dir; #endif struct t7xx_flash_dump *flash_dump; + atomic_t event; }; enum t7xx_pm_id { @@ -115,6 +118,20 @@ struct md_pm_entity { void *entity_param; }; +enum t7xx_event { + T7XX_UNKNOWN, + T7XX_READY, + T7XX_RESET, + T7XX_FASTBOOT_DL_MODE, + T7XX_FLASH_SUCCESS, + T7XX_FLASH_FAILURE, + T7XX_FASTBOOT_DUMP_MODE, + T7XX_MRDUMP_READY, + T7XX_LKDUMP_READY, + T7XX_MRDUMP_DISCARD, + T7XX_LKDUMP_DISCARD, +}; + void t7xx_pci_disable_sleep(struct t7xx_pci_dev *t7xx_dev); void t7xx_pci_enable_sleep(struct t7xx_pci_dev *t7xx_dev); int t7xx_pci_sleep_disable_complete(struct t7xx_pci_dev *t7xx_dev); diff --git a/drivers/net/wwan/t7xx/t7xx_port_flash_dump.c b/drivers/net/wwan/t7xx/t7xx_port_flash_dump.c index b8ef3b7d7430..0a0f2847aa3f 100644 --- a/drivers/net/wwan/t7xx/t7xx_port_flash_dump.c +++ b/drivers/net/wwan/t7xx/t7xx_port_flash_dump.c @@ -201,11 +201,14 @@ static int t7xx_flash_dump_fb_get_core(struct t7xx_port *port) continue; } else if (!strcmp(mcmd, T7XX_FB_RESP_MRDUMP_DONE)) { dev_dbg(port->dev, "%s! size:%zd\n", T7XX_FB_RESP_MRDUMP_DONE, offset_dlen); + flash_dump->regions[T7XX_MRDUMP_INDEX].info->dump_size = offset_dlen; + atomic_set(&port->t7xx_dev->event, T7XX_MRDUMP_READY); clear_bit(T7XX_MRDUMP_STATUS, &flash_dump->status); return 0; } dev_err(port->dev, "getcore protocol error (read len %05d, response %s)\n", clen, mcmd); + atomic_set(&port->t7xx_dev->event, T7XX_MRDUMP_DISCARD); ret = -EPROTO; goto free_mem; } @@ -248,6 +251,7 @@ static int t7xx_flash_dump_fb_dump_log(struct t7xx_port *port) if (datasize > lkdump_region->info->size) { dev_err(port->dev, "lkdump size is more than %dKB. Discarded!\n", T7XX_LKDUMP_SIZE / 1024); + atomic_set(&port->t7xx_dev->event, T7XX_LKDUMP_DISCARD); ret = -EFBIG; goto err_clear_bit; } @@ -272,6 +276,8 @@ static int t7xx_flash_dump_fb_dump_log(struct t7xx_port *port) } dev_dbg(port->dev, "LKDUMP DONE! size:%zd\n", offset); + lkdump_region->info->dump_size = offset; + atomic_set(&port->t7xx_dev->event, T7XX_LKDUMP_READY); clear_bit(T7XX_LKDUMP_STATUS, &flash_dump->status); return t7xx_flash_dump_fb_handle_response(port, NULL); @@ -361,6 +367,10 @@ static int t7xx_devlink_flash_update(struct devlink *devlink, clear_bit(T7XX_FLASH_STATUS, &flash_dump->status); err_out: + if (ret) + atomic_set(&port->t7xx_dev->event, T7XX_FLASH_FAILURE); + else + atomic_set(&port->t7xx_dev->event, T7XX_FLASH_SUCCESS); return ret; } @@ -411,9 +421,13 @@ static int t7xx_devlink_reload_up(struct devlink *devlink, u32 *actions_performed, struct netlink_ext_ack *extack) { + struct t7xx_flash_dump *flash_dump = devlink_priv(devlink); + *actions_performed = BIT(action); switch (action) { case DEVLINK_RELOAD_ACTION_DRIVER_REINIT: + atomic_set(&flash_dump->t7xx_dev->event, T7XX_RESET); + return 0; case DEVLINK_RELOAD_ACTION_FW_ACTIVATE: return 0; default: diff --git a/drivers/net/wwan/t7xx/t7xx_port_flash_dump.h b/drivers/net/wwan/t7xx/t7xx_port_flash_dump.h index 90758baa7854..057bb36216ca 100644 --- a/drivers/net/wwan/t7xx/t7xx_port_flash_dump.h +++ b/drivers/net/wwan/t7xx/t7xx_port_flash_dump.h @@ -57,6 +57,7 @@ enum t7xx_regions { struct t7xx_dump_region_info { const char *name; size_t size; + size_t dump_size; }; struct t7xx_dump_region { diff --git a/drivers/net/wwan/t7xx/t7xx_state_monitor.c b/drivers/net/wwan/t7xx/t7xx_state_monitor.c index 86cdb0d572d4..ab35342a2d16 100644 --- a/drivers/net/wwan/t7xx/t7xx_state_monitor.c +++ b/drivers/net/wwan/t7xx/t7xx_state_monitor.c @@ -249,6 +249,12 @@ static void t7xx_lk_stage_event_handling(struct t7xx_fsm_ctl *ctl, unsigned int port->port_conf->ops->enable_chl(port); t7xx_cldma_start(md_ctrl); + + if (lk_event == LK_EVENT_CREATE_POST_DL_PORT) + atomic_set(&md->t7xx_dev->event, T7XX_FASTBOOT_DL_MODE); + else + atomic_set(&md->t7xx_dev->event, T7XX_FASTBOOT_DUMP_MODE); + break; default: @@ -332,6 +338,7 @@ static void fsm_routine_ready(struct t7xx_fsm_ctl *ctl) ctl->curr_state = FSM_STATE_READY; t7xx_fsm_broadcast_ready_state(ctl); + atomic_set(&md->t7xx_dev->event, T7XX_READY); t7xx_md_event_notify(md, FSM_READY); }