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| author | Charles <charles.chiou@tw.promise.com> | 2017-02-17 10:52:38 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-03-15 19:22:10 -0400 |
| commit | 61b745fa63dbac366104c3585c0866562a8292be (patch) | |
| tree | 214b6125c2626f1f6725227343044c36600b387a /drivers/scsi/stex.c | |
| parent | d65702272c8d35afc8d7e85fa8100a914f0b787f (diff) | |
| download | linux-61b745fa63dbac366104c3585c0866562a8292be.tar.gz | |
scsi: stex: Add S6 support
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.Chiou <charles.chiou@tw.promise.com> Signed-off-by: Paul.Lyu <paul.lyu@tw.promise.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/stex.c')
| -rw-r--r-- | drivers/scsi/stex.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c index e177dfe08939..0751561b59da 100644 --- a/drivers/scsi/stex.c +++ b/drivers/scsi/stex.c @@ -26,6 +26,7 @@ #include <linux/module.h> #include <linux/spinlock.h> #include <linux/ktime.h> +#include <linux/reboot.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/byteorder.h> @@ -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)"); @@ -1673,6 +1680,9 @@ 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) { @@ -1947,15 +1957,20 @@ 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); } @@ -1992,6 +2007,12 @@ 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 = { |