From 21c5c83ce83359f0ab930824c67984575c051550 Mon Sep 17 00:00:00 2001 From: Arend Van Spriel Date: Wed, 16 May 2018 14:12:00 +0200 Subject: [PATCH] mwifiex: support sysfs initiated device coredump Since commit 3c47d19ff4dc ("drivers: base: add coredump driver ops") it is possible to initiate a device coredump from user-space. This patch adds support for it adding the .coredump() driver callback. As there is no longer a need to initiate it through debugfs remove that code. Signed-off-by: Arend van Spriel Signed-off-by: Kalle Valo --- drivers/net/wireless/marvell/mwifiex/cmdevt.c | 1 + .../net/wireless/marvell/mwifiex/debugfs.c | 31 +------------------ drivers/net/wireless/marvell/mwifiex/pcie.c | 18 +++++++++-- drivers/net/wireless/marvell/mwifiex/sdio.c | 12 +++++++ drivers/net/wireless/marvell/mwifiex/usb.c | 13 ++++++++ 5 files changed, 43 insertions(+), 32 deletions(-) diff --git a/drivers/net/wireless/marvell/mwifiex/cmdevt.c b/drivers/net/wireless/marvell/mwifiex/cmdevt.c index 9cfcdf6bec52..8be1e69657a7 100644 --- a/drivers/net/wireless/marvell/mwifiex/cmdevt.c +++ b/drivers/net/wireless/marvell/mwifiex/cmdevt.c @@ -674,6 +674,7 @@ int mwifiex_send_cmd(struct mwifiex_private *priv, u16 cmd_no, return ret; } +EXPORT_SYMBOL_GPL(mwifiex_send_cmd); /* * This function queues a command to the command pending queue. diff --git a/drivers/net/wireless/marvell/mwifiex/debugfs.c b/drivers/net/wireless/marvell/mwifiex/debugfs.c index db2872daae97..07453932f703 100644 --- a/drivers/net/wireless/marvell/mwifiex/debugfs.c +++ b/drivers/net/wireless/marvell/mwifiex/debugfs.c @@ -153,34 +153,6 @@ free_and_exit: return ret; } -/* - * Proc device dump read handler. - * - * This function is called when the 'device_dump' file is opened for - * reading. - * This function dumps driver information and firmware memory segments - * (ex. DTCM, ITCM, SQRAM etc.) for - * debugging. - */ -static ssize_t -mwifiex_device_dump_read(struct file *file, char __user *ubuf, - size_t count, loff_t *ppos) -{ - struct mwifiex_private *priv = file->private_data; - - /* For command timeouts, USB firmware will automatically emit - * firmware dump events, so we don't implement device_dump(). - * For user-initiated dumps, we trigger it ourselves. - */ - if (priv->adapter->iface_type == MWIFIEX_USB) - mwifiex_send_cmd(priv, HostCmd_CMD_FW_DUMP_EVENT, - HostCmd_ACT_GEN_SET, 0, NULL, true); - else - priv->adapter->if_ops.device_dump(priv->adapter); - - return 0; -} - /* * Proc getlog file read handler. * @@ -980,7 +952,6 @@ static const struct file_operations mwifiex_dfs_##name##_fops = { \ MWIFIEX_DFS_FILE_READ_OPS(info); MWIFIEX_DFS_FILE_READ_OPS(debug); MWIFIEX_DFS_FILE_READ_OPS(getlog); -MWIFIEX_DFS_FILE_READ_OPS(device_dump); MWIFIEX_DFS_FILE_OPS(regrdwr); MWIFIEX_DFS_FILE_OPS(rdeeprom); MWIFIEX_DFS_FILE_OPS(memrw); @@ -1011,7 +982,7 @@ mwifiex_dev_debugfs_init(struct mwifiex_private *priv) MWIFIEX_DFS_ADD_FILE(getlog); MWIFIEX_DFS_ADD_FILE(regrdwr); MWIFIEX_DFS_ADD_FILE(rdeeprom); - MWIFIEX_DFS_ADD_FILE(device_dump); + MWIFIEX_DFS_ADD_FILE(memrw); MWIFIEX_DFS_ADD_FILE(hscfg); MWIFIEX_DFS_ADD_FILE(histogram); diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c index 7538543d46fa..0c42b7296ddd 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie.c +++ b/drivers/net/wireless/marvell/mwifiex/pcie.c @@ -320,6 +320,19 @@ static void mwifiex_pcie_shutdown(struct pci_dev *pdev) return; } +static void mwifiex_pcie_coredump(struct device *dev) +{ + struct pci_dev *pdev; + struct pcie_service_card *card; + + pdev = container_of(dev, struct pci_dev, dev); + card = pci_get_drvdata(pdev); + + if (!test_and_set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, + &card->work_flags)) + schedule_work(&card->work); +} + static const struct pci_device_id mwifiex_ids[] = { { PCIE_VENDOR_ID_MARVELL, PCIE_DEVICE_ID_MARVELL_88W8766P, @@ -415,11 +428,12 @@ static struct pci_driver __refdata mwifiex_pcie = { .id_table = mwifiex_ids, .probe = mwifiex_pcie_probe, .remove = mwifiex_pcie_remove, -#ifdef CONFIG_PM_SLEEP .driver = { + .coredump = mwifiex_pcie_coredump, +#ifdef CONFIG_PM_SLEEP .pm = &mwifiex_pcie_pm_ops, - }, #endif + }, .shutdown = mwifiex_pcie_shutdown, .err_handler = &mwifiex_pcie_err_handler, }; diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c index a82880132af4..47d2dcc3f28f 100644 --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -466,6 +466,17 @@ static int mwifiex_sdio_suspend(struct device *dev) return ret; } +static void mwifiex_sdio_coredump(struct device *dev) +{ + struct sdio_func *func = dev_to_sdio_func(dev); + struct sdio_mmc_card *card; + + card = sdio_get_drvdata(func); + if (!test_and_set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, + &card->work_flags)) + schedule_work(&card->work); +} + /* Device ID for SD8786 */ #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116) /* Device ID for SD8787 */ @@ -515,6 +526,7 @@ static struct sdio_driver mwifiex_sdio = { .remove = mwifiex_sdio_remove, .drv = { .owner = THIS_MODULE, + .coredump = mwifiex_sdio_coredump, .pm = &mwifiex_sdio_pm_ops, } }; diff --git a/drivers/net/wireless/marvell/mwifiex/usb.c b/drivers/net/wireless/marvell/mwifiex/usb.c index 4bc244801636..7aa39878ce49 100644 --- a/drivers/net/wireless/marvell/mwifiex/usb.c +++ b/drivers/net/wireless/marvell/mwifiex/usb.c @@ -653,6 +653,16 @@ static void mwifiex_usb_disconnect(struct usb_interface *intf) usb_put_dev(interface_to_usbdev(intf)); } +static void mwifiex_usb_coredump(struct device *dev) +{ + struct usb_interface *intf = to_usb_interface(dev); + struct usb_card_rec *card = usb_get_intfdata(intf); + + mwifiex_send_cmd(mwifiex_get_priv(card->adapter, MWIFIEX_BSS_ROLE_ANY), + HostCmd_CMD_FW_DUMP_EVENT, HostCmd_ACT_GEN_SET, 0, + NULL, true); +} + static struct usb_driver mwifiex_usb_driver = { .name = "mwifiex_usb", .probe = mwifiex_usb_probe, @@ -661,6 +671,9 @@ static struct usb_driver mwifiex_usb_driver = { .suspend = mwifiex_usb_suspend, .resume = mwifiex_usb_resume, .soft_unbind = 1, + .drvwrap.driver = { + .coredump = mwifiex_usb_coredump, + }, }; static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, -- 2.25.1