From e6bdf24cf2992e1775fc095ed021f6b886707c41 Mon Sep 17 00:00:00 2001 From: Breno Leitao Date: Wed, 14 Oct 2009 14:57:51 -0300 Subject: [PATCH] jsm: adding EEH handlers Adding EEH handlers for the serial jsm driver. This patch adds the PCI error handlers and also register them to be called when a error is detected. Signed-off-by: Breno Leitao Acked-by: Scott Kilau Signed-off-by: Greg Kroah-Hartman --- drivers/serial/jsm/jsm_driver.c | 46 +++++++++++++++++++++++++++++++++ drivers/serial/jsm/jsm_tty.c | 2 +- 2 files changed, 47 insertions(+), 1 deletion(-) diff --git a/drivers/serial/jsm/jsm_driver.c b/drivers/serial/jsm/jsm_driver.c index 48326f75a81e..108c3e0471fd 100644 --- a/drivers/serial/jsm/jsm_driver.c +++ b/drivers/serial/jsm/jsm_driver.c @@ -48,6 +48,17 @@ struct uart_driver jsm_uart_driver = { .nr = NR_PORTS, }; +static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev, + pci_channel_state_t state); +static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev); +static void jsm_io_resume(struct pci_dev *pdev); + +static struct pci_error_handlers jsm_err_handler = { + .error_detected = jsm_io_error_detected, + .slot_reset = jsm_io_slot_reset, + .resume = jsm_io_resume, +}; + int jsm_debug; module_param(jsm_debug, int, 0); MODULE_PARM_DESC(jsm_debug, "Driver debugging level"); @@ -164,6 +175,7 @@ static int __devinit jsm_probe_one(struct pci_dev *pdev, const struct pci_device } pci_set_drvdata(pdev, brd); + pci_save_state(pdev); return 0; out_free_irq: @@ -222,8 +234,42 @@ static struct pci_driver jsm_driver = { .id_table = jsm_pci_tbl, .probe = jsm_probe_one, .remove = __devexit_p(jsm_remove_one), + .err_handler = &jsm_err_handler, }; +static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev, + pci_channel_state_t state) +{ + struct jsm_board *brd = pci_get_drvdata(pdev); + + jsm_remove_uart_port(brd); + + return PCI_ERS_RESULT_NEED_RESET; +} + +static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev) +{ + int rc; + + rc = pci_enable_device(pdev); + + if (rc) + return PCI_ERS_RESULT_DISCONNECT; + + pci_set_master(pdev); + + return PCI_ERS_RESULT_RECOVERED; +} + +static void jsm_io_resume(struct pci_dev *pdev) +{ + struct jsm_board *brd = pci_get_drvdata(pdev); + + pci_restore_state(pdev); + + jsm_uart_port_init(brd); +} + static int __init jsm_init_module(void) { int rc; diff --git a/drivers/serial/jsm/jsm_tty.c b/drivers/serial/jsm/jsm_tty.c index 1bcad596f3d6..cd95e215550d 100644 --- a/drivers/serial/jsm/jsm_tty.c +++ b/drivers/serial/jsm/jsm_tty.c @@ -430,7 +430,7 @@ int __devinit jsm_tty_init(struct jsm_board *brd) return 0; } -int __devinit jsm_uart_port_init(struct jsm_board *brd) +int jsm_uart_port_init(struct jsm_board *brd) { int i; unsigned int line; -- 2.30.2