| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Mon, 22 Feb 2016 20:07:09 +0800
From: Charles Chiou <ch1102chiou@...il.com>
To: JBottomley@...allels.com, martin.petersen@...cle.com,
jthumshirn@...e.de, hch@...radead.org, oneukum@...e.de,
linus.chen@...promise.com, grace.chang@...promise.com,
victor.p@...mise.com, eva.cheng@...promise.com,
charles.chiou@...promise.com
Cc: linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [v2 PATCH 3/3] scsi:stex.c Add S3/S4 support
From: Charles <charles.chiou@...promise.com>
Add S3/S4 support, add .suspend and .resume function in pci_driver.
In .suspend handler, driver send S3/S4 signal to the device.
Signed-off-by: Charles Chiou <charles.chiou@...promise.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@...e.de>
---
drivers/scsi/stex.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++---
1 file changed, 65 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c
index 1994603..5b23175 100644
--- a/drivers/scsi/stex.c
+++ b/drivers/scsi/stex.c
@@ -167,6 +167,14 @@ enum {
ST_ADDITIONAL_MEM = 0x200000,
ST_ADDITIONAL_MEM_MIN = 0x80000,
+ PMIC_SHUTDOWN = 0x0D,
+ PMIC_REUMSE = 0x10,
+ ST_IGNORED = -1,
+ ST_NOTHANDLED = 7,
+ ST_S3 = 3,
+ ST_S4 = 4,
+ ST_S5 = 5,
+ ST_S6 = 6,
};
struct st_sgitem {
@@ -1718,7 +1726,7 @@ 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;
@@ -1727,6 +1735,15 @@ static void stex_hba_stop(struct st_hba *hba)
u16 tag = 0;
spin_lock_irqsave(hba->host->host_lock, flags);
+
+ if (hba->cardtype == st_yel && hba->supports_pm == 1)
+ {
+ if(st_sleep_mic == ST_NOTHANDLED)
+ {
+ spin_unlock_irqrestore(hba->host->host_lock, flags);
+ return;
+ }
+ }
req = hba->alloc_rq(hba);
if (hba->cardtype == st_yel) {
msg_h = (struct st_msg_header *)req - 1;
@@ -1734,11 +1751,18 @@ 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;
@@ -1758,10 +1782,12 @@ 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)
@@ -1801,9 +1827,43 @@ 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
+ stex_hba_stop(hba, ST_S5);
+}
+
+static int stex_choice_sleep_mic(pm_message_t state)
+{
+ switch (state.event) {
+ case PM_EVENT_SUSPEND:
+ return ST_S3;
+ case PM_EVENT_HIBERNATE:
+ return ST_S4;
+ default:
+ return ST_NOTHANDLED;
+ }
}
+static int stex_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct st_hba *hba = pci_get_drvdata(pdev);
+
+ if (hba->cardtype == st_yel && hba->supports_pm == 1)
+ stex_hba_stop(hba, stex_choice_sleep_mic(state));
+ else
+ stex_hba_stop(hba, ST_IGNORED);
+ return 0;
+}
+
+static int stex_resume(struct pci_dev *pdev)
+{
+ struct st_hba *hba = pci_get_drvdata(pdev);
+
+ hba->mu_status = MU_STATE_STARTING;
+ stex_handshake(hba);
+ return 0;
+}
MODULE_DEVICE_TABLE(pci, stex_pci_tbl);
static struct pci_driver stex_pci_driver = {
@@ -1812,6 +1872,8 @@ static struct pci_driver stex_pci_driver = {
.probe = stex_probe,
.remove = stex_remove,
.shutdown = stex_shutdown,
+ .suspend = stex_suspend,
+ .resume = stex_resume,
};
static int __init stex_init(void)
--
1.9.1
Powered by blists - more mailing lists