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Commit 1527666e authored by Moger, Babu's avatar Moger, Babu Committed by James Bottomley
Browse files

[SCSI] scsi_dh_rdac: changes to collect the rdac debug information during the initialization 



Adding the code to read the debug information during initialization. This
patch collects the information about storage and controllers during
rdac_activate.

Signed-off-by: default avatarBabu Moger <babu.moger@lsi.com>
Reviewed-by: default avatarVijay Chauhan <vijay.chauhan@lsi.com>
Reviewed-by: default avatarBob Stankey <Robert.stankey@lsi.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@suse.de>
parent 87b79a53

drivers/scsi/device_handler/scsi_dh_rdac.c

+27 −7
Original line number Diff line number Diff line
@@ -112,6 +112,7 @@ struct c9_inquiry { 


#define SUBSYS_ID_LEN	16

#define SLOT_ID_LEN	2

#define ARRAY_LABEL_LEN	31



struct c4_inquiry {

	u8	peripheral_info;
@@ -135,6 +136,8 @@ struct rdac_controller { 
		struct rdac_pg_legacy legacy;

		struct rdac_pg_expanded expanded;

	} mode_select;

	u8	index;

	u8	array_name[ARRAY_LABEL_LEN];

};

struct c8_inquiry {

	u8	peripheral_info;
@@ -303,7 +306,8 @@ static void release_controller(struct kref *kref) 
	kfree(ctlr);

}



static struct rdac_controller *get_controller(u8 *subsys_id, u8 *slot_id)

static struct rdac_controller *get_controller(u8 *subsys_id, u8 *slot_id,

						char *array_name)

{

	struct rdac_controller *ctlr, *tmp;
@@ -324,6 +328,14 @@ static struct rdac_controller *get_controller(u8 *subsys_id, u8 *slot_id) 
	/* initialize fields of controller */

	memcpy(ctlr->subsys_id, subsys_id, SUBSYS_ID_LEN);

	memcpy(ctlr->slot_id, slot_id, SLOT_ID_LEN);

	memcpy(ctlr->array_name, array_name, ARRAY_LABEL_LEN);



	/* update the controller index */

	if (slot_id[1] == 0x31)

		ctlr->index = 0;

	else

		ctlr->index = 1;



	kref_init(&ctlr->kref);

	ctlr->use_ms10 = -1;

	list_add(&ctlr->node, &ctlr_list);
@@ -363,9 +375,10 @@ static int submit_inquiry(struct scsi_device *sdev, int page_code, 
	return err;

}



static int get_lun(struct scsi_device *sdev, struct rdac_dh_data *h)

static int get_lun_info(struct scsi_device *sdev, struct rdac_dh_data *h,

			char *array_name)

{

	int err;

	int err, i;

	struct c8_inquiry *inqp;



	err = submit_inquiry(sdev, 0xC8, sizeof(struct c8_inquiry), h);
@@ -377,6 +390,11 @@ static int get_lun(struct scsi_device *sdev, struct rdac_dh_data *h) 
		    inqp->page_id[2] != 'i' || inqp->page_id[3] != 'd')

			return SCSI_DH_NOSYS;

		h->lun = inqp->lun[7]; /* Uses only the last byte */



		for(i=0; i<ARRAY_LABEL_LEN-1; ++i)

			*(array_name+i) = inqp->array_user_label[(2*i)+1];



		*(array_name+ARRAY_LABEL_LEN-1) = '\0';

	}

	return err;

}
@@ -410,7 +428,7 @@ static int check_ownership(struct scsi_device *sdev, struct rdac_dh_data *h) 
}



static int initialize_controller(struct scsi_device *sdev,

				 struct rdac_dh_data *h)

				 struct rdac_dh_data *h, char *array_name)

{

	int err;

	struct c4_inquiry *inqp;
@@ -418,7 +436,8 @@ static int initialize_controller(struct scsi_device *sdev, 
	err = submit_inquiry(sdev, 0xC4, sizeof(struct c4_inquiry), h);

	if (err == SCSI_DH_OK) {

		inqp = &h->inq.c4;

		h->ctlr = get_controller(inqp->subsys_id, inqp->slot_id);

		h->ctlr = get_controller(inqp->subsys_id, inqp->slot_id,

					array_name);

		if (!h->ctlr)

			err = SCSI_DH_RES_TEMP_UNAVAIL;

	}
@@ -652,6 +671,7 @@ static int rdac_bus_attach(struct scsi_device *sdev) 
	struct rdac_dh_data *h;

	unsigned long flags;

	int err;

	char array_name[ARRAY_LABEL_LEN];



	scsi_dh_data = kzalloc(sizeof(struct scsi_device_handler *)

			       + sizeof(*h) , GFP_KERNEL);
@@ -666,11 +686,11 @@ static int rdac_bus_attach(struct scsi_device *sdev) 
	h->lun = UNINITIALIZED_LUN;

	h->state = RDAC_STATE_ACTIVE;



	err = get_lun(sdev, h);

	err = get_lun_info(sdev, h, array_name);

	if (err != SCSI_DH_OK)

		goto failed;



	err = initialize_controller(sdev, h);

	err = initialize_controller(sdev, h, array_name);

	if (err != SCSI_DH_OK)

		goto failed;