From mboxrd@z Thu Jan 1 00:00:00 1970 From: Charles Chiou Subject: [V3 PATCH 3/4] scsi:stex.c Add reboot support Date: Wed, 10 Dec 2014 09:36:32 +0800 Message-ID: <5487A3A0.8080308@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Sender: linux-kernel-owner@vger.kernel.org To: JBottomley@parallels.com Cc: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, linus.chen@tw.promise.com, grace.chang@tw.promise.com, victor.p@promise.com, ed.lin@promise.com List-Id: linux-scsi@vger.kernel.org From 72f5b5cbda424a254b0e9672bd4d9d249728fcb9 Mon Sep 17 00:00:00 2001 From: Charles Chiou Date: Wed, 5 Nov 2014 19:29:46 +0800 Subject: [PATCH 3/4] scsi:stex.c Add reboot support 1. Add reboot support, Pegasus devices should be notified that the host is going to shut down/reboot. I register reboot callback function to distinct host is going to shut down or to reboot. 2. Pegasus FW shutdown flow is sensitive to host behavior (host is going to S3/S4/shut down/reboot). To this end, I add one argument in stex_hba_stop to support various stop command. Signed-off-by: charles.chiou@tw.promise.com --- drivers/scsi/stex.c | 46 ++++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 42 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c index 7dc6afe..a536cfb 100644 --- a/drivers/scsi/stex.c +++ b/drivers/scsi/stex.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include #include @@ -166,6 +167,13 @@ enum { ST_ADDITIONAL_MEM = 0x200000, ST_ADDITIONAL_MEM_MIN = 0x80000, + PMIC_SHUTDOWN = 0x0D, + PMIC_REUMSE = 0x10, + ST_IGNORED = -1, + ST_S3 = 3, + ST_S4 = 4, + ST_S5 = 5, + ST_S6 = 6, }; struct st_sgitem { @@ -344,6 +352,7 @@ struct st_card_info { u16 sts_count; }; +static int reboot; static int msi; module_param(msi, int, 0); MODULE_PARM_DESC(msi, "Enable Message Signaled Interrupts(0=off, 1=on)"); @@ -364,6 +373,14 @@ MODULE_AUTHOR("Ed Lin"); MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers"); MODULE_LICENSE("GPL"); MODULE_VERSION(ST_DRIVER_VERSION); +static int stex_reboot_callback(struct notifier_block *self, + unsigned long val, + void *data) +{ + if (val == SYS_RESTART) + reboot = 1; + return NOTIFY_OK; +} static void stex_gettime(__le64 *time) { @@ -1562,6 +1579,7 @@ static int stex_probe(struct pci_dev *pdev, const struct pci_device_id *id) u32 sts_offset, cp_offset, scratch_offset; int err; + reboot = 0; err = pci_enable_device(pdev); if (err) return err; @@ -1755,7 +1773,7 @@ out_disable: return err; } -static void stex_hba_stop(struct st_hba *hba) +static void stex_hba_stop(struct st_hba *hba, int st_sleep_mic) { struct req_msg *req; struct st_msg_header *msg_h; @@ -1771,11 +1789,18 @@ static void stex_hba_stop(struct st_hba *hba) } else memset(req, 0, hba->rq_size); - if (hba->cardtype == st_yosemite || hba->cardtype == st_yel) { + if ((hba->cardtype == st_yosemite || hba->cardtype == st_yel) + && st_sleep_mic == ST_IGNORED) { req->cdb[0] = MGT_CMD; req->cdb[1] = MGT_CMD_SIGNATURE; req->cdb[2] = CTLR_CONFIG_CMD; req->cdb[3] = CTLR_SHUTDOWN; + } else if (hba->cardtype == st_yel && st_sleep_mic != ST_IGNORED) { + req->cdb[0] = MGT_CMD; + req->cdb[1] = MGT_CMD_SIGNATURE; + req->cdb[2] = CTLR_CONFIG_CMD; + req->cdb[3] = PMIC_SHUTDOWN; + req->cdb[4] = st_sleep_mic; } else { req->cdb[0] = CONTROLLER_CMD; req->cdb[1] = CTLR_POWER_STATE_CHANGE; @@ -1795,10 +1820,12 @@ static void stex_hba_stop(struct st_hba *hba) while (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) { if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) { hba->ccb[tag].req_type = 0; + hba->mu_status = MU_STATE_STOP; return; } msleep(1); } + hba->mu_status = MU_STATE_STOP; } static void stex_hba_free(struct st_hba *hba) @@ -1838,7 +1865,14 @@ static void stex_shutdown(struct pci_dev *pdev) { struct st_hba *hba = pci_get_drvdata(pdev); - stex_hba_stop(hba); + if (hba->supports_pm == 0) + stex_hba_stop(hba, ST_IGNORED); + else { + if (reboot) + stex_hba_stop(hba, ST_S6); + else + stex_hba_stop(hba, ST_S5); + } } MODULE_DEVICE_TABLE(pci, stex_pci_tbl); @@ -1851,18 +1885,22 @@ static struct pci_driver stex_pci_driver = { .shutdown = stex_shutdown, }; +static struct notifier_block stex_reboot_notifier = { + stex_reboot_callback, NULL, 0 +}; static int __init stex_init(void) { printk(KERN_INFO DRV_NAME ": Promise SuperTrak EX Driver version: %s\n", ST_DRIVER_VERSION); - + register_reboot_notifier(&stex_reboot_notifier); return pci_register_driver(&stex_pci_driver); } static void __exit stex_exit(void) { pci_unregister_driver(&stex_pci_driver); + unregister_reboot_notifier(&stex_reboot_notifier); } module_init(stex_init); -- 1.9.1