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Commit 61b745fa authored by Charles's avatar Charles Committed by Martin K. Petersen
Browse files

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: default avatarCharles.Chiou <charles.chiou@tw.promise.com>
Signed-off-by: default avatarPaul.Lyu <paul.lyu@tw.promise.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent d6570227

drivers/scsi/stex.c

+23 −2
Original line number Diff line number Diff line
@@ -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 = {