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Commit 24601bbc authored by Andrew Morton's avatar Andrew Morton Committed by Linus Torvalds
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revert "dpt_i2o: convert to SCSI hotplug model" 

revert

    commit 55d9fcf5
    Author: Matthew Wilcox <matthew@wil.cx>
    Date:   Mon Jul 30 15:19:18 2007 -0600

        [SCSI] dpt_i2o: convert to SCSI hotplug model

         - Delete refereces to HOSTS_C
         - Switch to module_init/module_exit instead of detect/release
         - Don't pass around the host template and rename it to adpt_template
         - Switch from scsi_register/scsi_unregister to scsi_host_alloc,
           scsi_add_host, scsi_scan_host and scsi_host_put.

Because it caused (for unknown reasons) Andres' all-data-reads-as-zeroes
problem, reported at
http://groups.google.com/group/fa.linux.kernel/msg/083a9acff0330234



Cc: Matthew Wilcox <matthew@wil.cx>
Cc: "Salyzyn, Mark" <mark_salyzyn@adaptec.com>
Cc: James Bottomley <James.Bottomley@SteelEye.com>
Acked-by: default avatarFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Anders Henke <anders.henke@1und1.de>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
Cc: <stable@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 43cbe2cb

drivers/scsi/dpt_i2o.c

+61 −71
Original line number Diff line number Diff line
@@ -173,20 +173,20 @@ static struct pci_device_id dptids[] = { 
};

MODULE_DEVICE_TABLE(pci,dptids);



static void adpt_exit(void);



static int adpt_detect(void)

static int adpt_detect(struct scsi_host_template* sht)

{

	struct pci_dev *pDev = NULL;

	adpt_hba* pHba;



	adpt_init();



	PINFO("Detecting Adaptec I2O RAID controllers...\n");



        /* search for all Adatpec I2O RAID cards */

	while ((pDev = pci_get_device( PCI_DPT_VENDOR_ID, PCI_ANY_ID, pDev))) {

		if(pDev->device == PCI_DPT_DEVICE_ID ||

		   pDev->device == PCI_DPT_RAPTOR_DEVICE_ID){

			if(adpt_install_hba(pDev) ){

			if(adpt_install_hba(sht, pDev) ){

				PERROR("Could not Init an I2O RAID device\n");

				PERROR("Will not try to detect others.\n");

				return hba_count-1;
@@ -248,33 +248,34 @@ static int adpt_detect(void) 
	}



	for (pHba = hba_chain; pHba; pHba = pHba->next) {

		if (adpt_scsi_register(pHba) < 0) {

		if( adpt_scsi_register(pHba,sht) < 0){

			adpt_i2o_delete_hba(pHba);

			continue;

		}

		pHba->initialized = TRUE;

		pHba->state &= ~DPTI_STATE_RESET;

		scsi_scan_host(pHba->host);

	}



	// Register our control device node

	// nodes will need to be created in /dev to access this

	// the nodes can not be created from within the driver

	if (hba_count && register_chrdev(DPTI_I2O_MAJOR, DPT_DRIVER, &adpt_fops)) {

		adpt_exit();

		adpt_i2o_sys_shutdown();

		return 0;

	}

	return hba_count;

}





static int adpt_release(adpt_hba *pHba)

/*

 * scsi_unregister will be called AFTER we return.

 */

static int adpt_release(struct Scsi_Host *host)

{

	struct Scsi_Host *shost = pHba->host;

	scsi_remove_host(shost);

	adpt_hba* pHba = (adpt_hba*) host->hostdata[0];

//	adpt_i2o_quiesce_hba(pHba);

	adpt_i2o_delete_hba(pHba);

	scsi_host_put(shost);

	scsi_unregister(host);

	return 0;

}
@@ -881,7 +882,7 @@ static int adpt_reboot_event(struct notifier_block *n, ulong code, void *p) 
#endif





static int adpt_install_hba(struct pci_dev* pDev)

static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev)

{



	adpt_hba* pHba = NULL;
@@ -1028,6 +1029,8 @@ static void adpt_i2o_delete_hba(adpt_hba* pHba) 




	mutex_lock(&adpt_configuration_lock);

	// scsi_unregister calls our adpt_release which

	// does a quiese

	if(pHba->host){

		free_irq(pHba->host->irq, pHba);

	}
@@ -1079,6 +1082,17 @@ static void adpt_i2o_delete_hba(adpt_hba* pHba) 
}





static int adpt_init(void)

{

	printk("Loading Adaptec I2O RAID: Version " DPT_I2O_VERSION "\n");

#ifdef REBOOT_NOTIFIER

	register_reboot_notifier(&adpt_reboot_notifier);

#endif



	return 0;

}





static struct adpt_device* adpt_find_device(adpt_hba* pHba, u32 chan, u32 id, u32 lun)

{

	struct adpt_device* d;
@@ -2164,6 +2178,37 @@ static s32 adpt_scsi_to_i2o(adpt_hba* pHba, struct scsi_cmnd* cmd, struct adpt_d 
}





static s32 adpt_scsi_register(adpt_hba* pHba,struct scsi_host_template * sht)

{

	struct Scsi_Host *host = NULL;



	host = scsi_register(sht, sizeof(adpt_hba*));

	if (host == NULL) {

		printk ("%s: scsi_register returned NULL\n",pHba->name);

		return -1;

	}

	host->hostdata[0] = (unsigned long)pHba;

	pHba->host = host;



	host->irq = pHba->pDev->irq;

	/* no IO ports, so don't have to set host->io_port and

	 * host->n_io_port

	 */

	host->io_port = 0;

	host->n_io_port = 0;

				/* see comments in scsi_host.h */

	host->max_id = 16;

	host->max_lun = 256;

	host->max_channel = pHba->top_scsi_channel + 1;

	host->cmd_per_lun = 1;

	host->unique_id = (uint) pHba;

	host->sg_tablesize = pHba->sg_tablesize;

	host->can_queue = pHba->post_fifo_size;



	return 0;

}





static s32 adpt_i2o_to_scsi(void __iomem *reply, struct scsi_cmnd* cmd)

{

	adpt_hba* pHba;
@@ -3279,10 +3324,12 @@ static static void adpt_delay(int millisec) 


#endif



static struct scsi_host_template adpt_template = {

static struct scsi_host_template driver_template = {

	.name			= "dpt_i2o",

	.proc_name		= "dpt_i2o",

	.proc_info		= adpt_proc_info,

	.detect			= adpt_detect,

	.release		= adpt_release,

	.info			= adpt_info,

	.queuecommand		= adpt_queue,

	.eh_abort_handler	= adpt_abort,
@@ -3297,62 +3344,5 @@ static struct scsi_host_template adpt_template = { 
	.use_clustering		= ENABLE_CLUSTERING,

	.use_sg_chaining	= ENABLE_SG_CHAINING,

};



static s32 adpt_scsi_register(adpt_hba* pHba)

{

	struct Scsi_Host *host;



	host = scsi_host_alloc(&adpt_template, sizeof(adpt_hba*));

	if (host == NULL) {

		printk ("%s: scsi_host_alloc returned NULL\n",pHba->name);

		return -1;

	}

	host->hostdata[0] = (unsigned long)pHba;

	pHba->host = host;



	host->irq = pHba->pDev->irq;

	/* no IO ports, so don't have to set host->io_port and

	 * host->n_io_port

	 */

	host->io_port = 0;

	host->n_io_port = 0;

				/* see comments in scsi_host.h */

	host->max_id = 16;

	host->max_lun = 256;

	host->max_channel = pHba->top_scsi_channel + 1;

	host->cmd_per_lun = 1;

	host->unique_id = (uint) pHba;

	host->sg_tablesize = pHba->sg_tablesize;

	host->can_queue = pHba->post_fifo_size;



	if (scsi_add_host(host, &pHba->pDev->dev)) {

		scsi_host_put(host);

		return -1;

	}



	return 0;

}



static int __init adpt_init(void)

{

	int count;



	printk("Loading Adaptec I2O RAID: Version " DPT_I2O_VERSION "\n");

#ifdef REBOOT_NOTIFIER

	register_reboot_notifier(&adpt_reboot_notifier);

#endif



	count = adpt_detect();



	return count > 0 ? 0 : -ENODEV;

}



static void adpt_exit(void)

{

	while (hba_chain)

		adpt_release(hba_chain);

}



module_init(adpt_init);

module_exit(adpt_exit);

#include "scsi_module.c"

MODULE_LICENSE("GPL");

drivers/scsi/dpti.h

+7 −2
Original line number Diff line number Diff line
@@ -28,9 +28,11 @@ 
 * SCSI interface function Prototypes

 */



static int adpt_detect(struct scsi_host_template * sht);

static int adpt_queue(struct scsi_cmnd * cmd, void (*cmdcomplete) (struct scsi_cmnd *));

static int adpt_abort(struct scsi_cmnd * cmd);

static int adpt_reset(struct scsi_cmnd* cmd);

static int adpt_release(struct Scsi_Host *host);

static int adpt_slave_configure(struct scsi_device *);



static const char *adpt_info(struct Scsi_Host *pSHost);
@@ -47,6 +49,8 @@ static int adpt_device_reset(struct scsi_cmnd* cmd); 


#define DPT_DRIVER_NAME	"Adaptec I2O RAID"



#ifndef HOSTS_C



#include "dpt/sys_info.h"

#include <linux/wait.h>

#include "dpt/dpti_i2o.h"
@@ -285,7 +289,7 @@ static s32 adpt_i2o_init_outbound_q(adpt_hba* pHba); 
static s32 adpt_i2o_hrt_get(adpt_hba* pHba);

static s32 adpt_scsi_to_i2o(adpt_hba* pHba, struct scsi_cmnd* cmd, struct adpt_device* dptdevice);

static s32 adpt_i2o_to_scsi(void __iomem *reply, struct scsi_cmnd* cmd);

static s32 adpt_scsi_register(adpt_hba* pHba);

static s32 adpt_scsi_register(adpt_hba* pHba,struct scsi_host_template * sht);

static s32 adpt_hba_reset(adpt_hba* pHba);

static s32 adpt_i2o_reset_hba(adpt_hba* pHba);

static s32 adpt_rescan(adpt_hba* pHba);
@@ -295,7 +299,7 @@ static void adpt_i2o_delete_hba(adpt_hba* pHba); 
static void adpt_inquiry(adpt_hba* pHba);

static void adpt_fail_posted_scbs(adpt_hba* pHba);

static struct adpt_device* adpt_find_device(adpt_hba* pHba, u32 chan, u32 id, u32 lun);

static int adpt_install_hba(struct pci_dev* pDev) ;

static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev) ;

static int adpt_i2o_online_hba(adpt_hba* pHba);

static void adpt_i2o_post_wait_complete(u32, int);

static int adpt_i2o_systab_send(adpt_hba* pHba);
@@ -339,4 +343,5 @@ static void adpt_i386_info(sysInfo_S* si); 
#define FW_DEBUG_BLED_OFFSET       8



#define FW_DEBUG_FLAGS_NO_HEADERS_B    0x01

#endif				/* !HOSTS_C */

#endif				/* _DPT_H */