From mboxrd@z Thu Jan 1 00:00:00 1970 From: Charles Chiou Subject: [v3 PATCH 2/2] scsi:stex.c Add S6 support Date: Tue, 14 Jun 2016 16:33:40 +0800 Message-ID: <1465893220-10968-1-git-send-email-ch1102chiou@gmail.com> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: jejb@linux.vnet.ibm.com, martin.petersen@oracle.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linus.chen@tw.promise.com, grace.chang@tw.promise.com, victor.p@promise.com, eva.cheng@tw.promise.com, charles.chiou@tw.promise.com, julian.calaby@gmail.com Cc: Paul List-Id: linux-scsi@vger.kernel.org From: Charles 1.Add reboot notifier and register it in stex_probe for all supported device. 2.For all supported device in restart flow, we get a callback from notifier and set S6flag for stex_shutdown & stex_hba_stop to send restart command to FW. Signed-off-by: Charles Signed-off-by: Paul --- drivers/scsi/stex.c | 25 +++++++++++++++++++++++-- 1 file changed, 23 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c index cad53b5..7b29a00 100644 --- a/drivers/scsi/stex.c +++ b/drivers/scsi/stex.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include #include @@ -362,6 +363,12 @@ struct st_card_info { u16 sts_count; }; +int S6flag; +static int stex_halt(struct notifier_block *nb, ulong event, void *buf); +static struct notifier_block stex_notifier = { + stex_halt, NULL, 0 +}; + static int msi; module_param(msi, int, 0); MODULE_PARM_DESC(msi, "Enable Message Signaled Interrupts(0=off, 1=on)"); @@ -1655,6 +1662,9 @@ static int stex_probe(struct pci_dev *pdev, const struct pci_device_id *id) pci_set_master(pdev); + S6flag = 0; + register_reboot_notifier(&stex_notifier); + host = scsi_host_alloc(&driver_template, sizeof(struct st_hba)); if (!host) { @@ -1929,15 +1939,20 @@ static void stex_remove(struct pci_dev *pdev) scsi_host_put(hba->host); pci_disable_device(pdev); + + unregister_reboot_notifier(&stex_notifier); } static void stex_shutdown(struct pci_dev *pdev) { struct st_hba *hba = pci_get_drvdata(pdev); - if (hba->supports_pm == 0) + if (hba->supports_pm == 0) { stex_hba_stop(hba, ST_IGNORED); - else + } else if (hba->supports_pm == 1 && S6flag) { + unregister_reboot_notifier(&stex_notifier); + stex_hba_stop(hba, ST_S6); + } else stex_hba_stop(hba, ST_S5); } @@ -1974,6 +1989,12 @@ static int stex_resume(struct pci_dev *pdev) stex_handshake(hba); return 0; } + +static int stex_halt(struct notifier_block *nb, unsigned long event, void *buf) +{ + S6flag = 1; + return NOTIFY_OK; +} MODULE_DEVICE_TABLE(pci, stex_pci_tbl); static struct pci_driver stex_pci_driver = { -- 1.9.1