qla_gs.c

linux-2.6.15.6

/*
 * QLogic Fibre Channel HBA Driver
 * Copyright (c)  2003-2005 QLogic Corporation
 *
 * See LICENSE.qla2xxx for copyright and licensing details.
 */
#include "qla_def.h"

static inline struct ct_sns_req *
qla2x00_prep_ct_req(struct ct_sns_req *, uint16_t, uint16_t);

static inline struct sns_cmd_pkt *
qla2x00_prep_sns_cmd(scsi_qla_host_t *, uint16_t, uint16_t, uint16_t);

static int qla2x00_sns_ga_nxt(scsi_qla_host_t *, fc_port_t *);
static int qla2x00_sns_gid_pt(scsi_qla_host_t *, sw_info_t *);
static int qla2x00_sns_gpn_id(scsi_qla_host_t *, sw_info_t *);
static int qla2x00_sns_gnn_id(scsi_qla_host_t *, sw_info_t *);
static int qla2x00_sns_rft_id(scsi_qla_host_t *);
static int qla2x00_sns_rnn_id(scsi_qla_host_t *);

/**
 * qla2x00_prep_ms_iocb() - Prepare common MS/CT IOCB fields for SNS CT query.
 * @ha: HA context
 * @req_size: request size in bytes
 * @rsp_size: response size in bytes
 *
 * Returns a pointer to the @ha's ms_iocb.
 */
void *
qla2x00_prep_ms_iocb(scsi_qla_host_t *ha, uint32_t req_size, uint32_t rsp_size)
{
	ms_iocb_entry_t *ms_pkt;

	ms_pkt = ha->ms_iocb;
	memset(ms_pkt, 0, sizeof(ms_iocb_entry_t));

	ms_pkt->entry_type = MS_IOCB_TYPE;
	ms_pkt->entry_count = 1;
	SET_TARGET_ID(ha, ms_pkt->loop_id, SIMPLE_NAME_SERVER);
	ms_pkt->control_flags = __constant_cpu_to_le16(CF_READ | CF_HEAD_TAG);
	ms_pkt->timeout = __constant_cpu_to_le16(25);
	ms_pkt->cmd_dsd_count = __constant_cpu_to_le16(1);
	ms_pkt->total_dsd_count = __constant_cpu_to_le16(2);
	ms_pkt->rsp_bytecount = cpu_to_le32(rsp_size);
	ms_pkt->req_bytecount = cpu_to_le32(req_size);

	ms_pkt->dseg_req_address[0] = cpu_to_le32(LSD(ha->ct_sns_dma));
	ms_pkt->dseg_req_address[1] = cpu_to_le32(MSD(ha->ct_sns_dma));
	ms_pkt->dseg_req_length = ms_pkt->req_bytecount;

	ms_pkt->dseg_rsp_address[0] = cpu_to_le32(LSD(ha->ct_sns_dma));
	ms_pkt->dseg_rsp_address[1] = cpu_to_le32(MSD(ha->ct_sns_dma));
	ms_pkt->dseg_rsp_length = ms_pkt->rsp_bytecount;

	return (ms_pkt);
}

/**
 * qla24xx_prep_ms_iocb() - Prepare common CT IOCB fields for SNS CT query.
 * @ha: HA context
 * @req_size: request size in bytes
 * @rsp_size: response size in bytes
 *
 * Returns a pointer to the @ha's ms_iocb.
 */
void *
qla24xx_prep_ms_iocb(scsi_qla_host_t *ha, uint32_t req_size, uint32_t rsp_size)
{
	struct ct_entry_24xx *ct_pkt;

	ct_pkt = (struct ct_entry_24xx *)ha->ms_iocb;
	memset(ct_pkt, 0, sizeof(struct ct_entry_24xx));

	ct_pkt->entry_type = CT_IOCB_TYPE;
	ct_pkt->entry_count = 1;
	ct_pkt->nport_handle = __constant_cpu_to_le16(NPH_SNS);
	ct_pkt->timeout = __constant_cpu_to_le16(25);
	ct_pkt->cmd_dsd_count = __constant_cpu_to_le16(1);
	ct_pkt->rsp_dsd_count = __constant_cpu_to_le16(1);
	ct_pkt->rsp_byte_count = cpu_to_le32(rsp_size);
	ct_pkt->cmd_byte_count = cpu_to_le32(req_size);

	ct_pkt->dseg_0_address[0] = cpu_to_le32(LSD(ha->ct_sns_dma));
	ct_pkt->dseg_0_address[1] = cpu_to_le32(MSD(ha->ct_sns_dma));
	ct_pkt->dseg_0_len = ct_pkt->cmd_byte_count;

	ct_pkt->dseg_1_address[0] = cpu_to_le32(LSD(ha->ct_sns_dma));
	ct_pkt->dseg_1_address[1] = cpu_to_le32(MSD(ha->ct_sns_dma));
	ct_pkt->dseg_1_len = ct_pkt->rsp_byte_count;

	return (ct_pkt);
}

/**
 * qla2x00_prep_ct_req() - Prepare common CT request fields for SNS query.
 * @ct_req: CT request buffer
 * @cmd: GS command
 * @rsp_size: response size in bytes
 *
 * Returns a pointer to the intitialized @ct_req.
 */
static inline struct ct_sns_req *
qla2x00_prep_ct_req(struct ct_sns_req *ct_req, uint16_t cmd, uint16_t rsp_size)
{
	memset(ct_req, 0, sizeof(struct ct_sns_pkt));

	ct_req->header.revision = 0x01;
	ct_req->header.gs_type = 0xFC;
	ct_req->header.gs_subtype = 0x02;
	ct_req->command = cpu_to_be16(cmd);
	ct_req->max_rsp_size = cpu_to_be16((rsp_size - 16) / 4);

	return (ct_req);
}

static int
qla2x00_chk_ms_status(scsi_qla_host_t *ha, ms_iocb_entry_t *ms_pkt,
    struct ct_sns_rsp *ct_rsp, const char *routine)
{
	int rval;
	uint16_t comp_status;

	rval = QLA_FUNCTION_FAILED;
	if (ms_pkt->entry_status != 0) {
		DEBUG2_3(printk("scsi(%ld): %s failed, error status (%x).\n",
		    ha->host_no, routine, ms_pkt->entry_status));
	} else {
		if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
			comp_status =
			    ((struct ct_entry_24xx *)ms_pkt)->comp_status;
		else
			comp_status = le16_to_cpu(ms_pkt->status);
		switch (comp_status) {
		case CS_COMPLETE:
		case CS_DATA_UNDERRUN:
		case CS_DATA_OVERRUN:		/* Overrun? */
			if (ct_rsp->header.response !=
			    __constant_cpu_to_be16(CT_ACCEPT_RESPONSE)) {
				DEBUG2_3(printk("scsi(%ld): %s failed, "
				    "rejected request:\n", ha->host_no,
				    routine));
				DEBUG2_3(qla2x00_dump_buffer(
				    (uint8_t *)&ct_rsp->header,
				    sizeof(struct ct_rsp_hdr)));
			} else
				rval = QLA_SUCCESS;
			break;
		default:
			DEBUG2_3(printk("scsi(%ld): %s failed, completion "
			    "status (%x).\n", ha->host_no, routine,
			    comp_status));
			break;
		}
	}
	return rval;
}

/**
 * qla2x00_ga_nxt() - SNS scan for fabric devices via GA_NXT command.
 * @ha: HA context
 * @fcport: fcport entry to updated
 *
 * Returns 0 on success.
 */
int
qla2x00_ga_nxt(scsi_qla_host_t *ha, fc_port_t *fcport)
{
	int		rval;

	ms_iocb_entry_t	*ms_pkt;
	struct ct_sns_req	*ct_req;
	struct ct_sns_rsp	*ct_rsp;

	if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
		return (qla2x00_sns_ga_nxt(ha, fcport));
	}

	/* Issue GA_NXT */
	/* Prepare common MS IOCB */
	ms_pkt = ha->isp_ops.prep_ms_iocb(ha, GA_NXT_REQ_SIZE, GA_NXT_RSP_SIZE);

	/* Prepare CT request */
	ct_req = qla2x00_prep_ct_req(&ha->ct_sns->p.req, GA_NXT_CMD,
	    GA_NXT_RSP_SIZE);
	ct_rsp = &ha->ct_sns->p.rsp;

	/* Prepare CT arguments -- port_id */
	ct_req->req.port_id.port_id[0] = fcport->d_id.b.domain;
	ct_req->req.port_id.port_id[1] = fcport->d_id.b.area;
	ct_req->req.port_id.port_id[2] = fcport->d_id.b.al_pa;

	/* Execute MS IOCB */
	rval = qla2x00_issue_iocb(ha, ha->ms_iocb, ha->ms_iocb_dma,
	    sizeof(ms_iocb_entry_t));
	if (rval != QLA_SUCCESS) {
		/*EMPTY*/
		DEBUG2_3(printk("scsi(%ld): GA_NXT issue IOCB failed (%d).\n",
		    ha->host_no, rval));
	} else if (qla2x00_chk_ms_status(ha, ms_pkt, ct_rsp, "GA_NXT") !=
	    QLA_SUCCESS) {
		rval = QLA_FUNCTION_FAILED;
	} else {
		/* Populate fc_port_t entry. */
		fcport->d_id.b.domain = ct_rsp->rsp.ga_nxt.port_id[0];
		fcport->d_id.b.area = ct_rsp->rsp.ga_nxt.port_id[1];
		fcport->d_id.b.al_pa = ct_rsp->rsp.ga_nxt.port_id[2];

		memcpy(fcport->node_name, ct_rsp->rsp.ga_nxt.node_name,
		    WWN_SIZE);
		memcpy(fcport->port_name, ct_rsp->rsp.ga_nxt.port_name,
		    WWN_SIZE);

		if (ct_rsp->rsp.ga_nxt.port_type != NS_N_PORT_TYPE &&
		    ct_rsp->rsp.ga_nxt.port_type != NS_NL_PORT_TYPE)
			fcport->d_id.b.domain = 0xf0;

		DEBUG2_3(printk("scsi(%ld): GA_NXT entry - "
		    "nn %02x%02x%02x%02x%02x%02x%02x%02x "
		    "pn %02x%02x%02x%02x%02x%02x%02x%02x "
		    "portid=%02x%02x%02x.\n",
		    ha->host_no,
		    fcport->node_name[0], fcport->node_name[1],
		    fcport->node_name[2], fcport->node_name[3],
		    fcport->node_name[4], fcport->node_name[5],
		    fcport->node_name[6], fcport->node_name[7],
		    fcport->port_name[0], fcport->port_name[1],
		    fcport->port_name[2], fcport->port_name[3],
		    fcport->port_name[4], fcport->port_name[5],
		    fcport->port_name[6], fcport->port_name[7],
		    fcport->d_id.b.domain, fcport->d_id.b.area,
		    fcport->d_id.b.al_pa));
	}

	return (rval);
}

/**
 * qla2x00_gid_pt() - SNS scan for fabric devices via GID_PT command.
 * @ha: HA context
 * @list: switch info entries to populate
 *
 * NOTE: Non-Nx_Ports are not requested.
 *
 * Returns 0 on success.
 */
int
qla2x00_gid_pt(scsi_qla_host_t *ha, sw_info_t *list)
{
	int		rval;
	uint16_t	i;

	ms_iocb_entry_t	*ms_pkt;
	struct ct_sns_req	*ct_req;
	struct ct_sns_rsp	*ct_rsp;

	struct ct_sns_gid_pt_data *gid_data;

	if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
		return (qla2x00_sns_gid_pt(ha, list));
	}

	gid_data = NULL;

	/* Issue GID_PT */
	/* Prepare common MS IOCB */
	ms_pkt = ha->isp_ops.prep_ms_iocb(ha, GID_PT_REQ_SIZE, GID_PT_RSP_SIZE);

	/* Prepare CT request */
	ct_req = qla2x00_prep_ct_req(&ha->ct_sns->p.req, GID_PT_CMD,
	    GID_PT_RSP_SIZE);
	ct_rsp = &ha->ct_sns->p.rsp;

	/* Prepare CT arguments -- port_type */
	ct_req->req.gid_pt.port_type = NS_NX_PORT_TYPE;

	/* Execute MS IOCB */
	rval = qla2x00_issue_iocb(ha, ha->ms_iocb, ha->ms_iocb_dma,
	    sizeof(ms_iocb_entry_t));
	if (rval != QLA_SUCCESS) {
		/*EMPTY*/
		DEBUG2_3(printk("scsi(%ld): GID_PT issue IOCB failed (%d).\n",
		    ha->host_no, rval));
	} else if (qla2x00_chk_ms_status(ha, ms_pkt, ct_rsp, "GID_PT") !=
	    QLA_SUCCESS) {
		rval = QLA_FUNCTION_FAILED;
	} else {
		/* Set port IDs in switch info list. */
		for (i = 0; i < MAX_FIBRE_DEVICES; i++) {
			gid_data = &ct_rsp->rsp.gid_pt.entries[i];
			list[i].d_id.b.domain = gid_data->port_id[0];
			list[i].d_id.b.area = gid_data->port_id[1];
			list[i].d_id.b.al_pa = gid_data->port_id[2];

			/* Last one exit. */
			if (gid_data->control_byte & BIT_7) {
				list[i].d_id.b.rsvd_1 = gid_data->control_byte;
				break;
			}
		}

		/*
		 * If we've used all available slots, then the switch is
		 * reporting back more devices than we can handle with this
		 * single call.  Return a failed status, and let GA_NXT handle
		 * the overload.
		 */
		if (i == MAX_FIBRE_DEVICES)
			rval = QLA_FUNCTION_FAILED;
	}

	return (rval);
}

/**
 * qla2x00_gpn_id() - SNS Get Port Name (GPN_ID) query.
 * @ha: HA context
 * @list: switch info entries to populate
 *
 * Returns 0 on success.
 */
int
qla2x00_gpn_id(scsi_qla_host_t *ha, sw_info_t *list)
{
	int		rval;
	uint16_t	i;

	ms_iocb_entry_t	*ms_pkt;
	struct ct_sns_req	*ct_req;
	struct ct_sns_rsp	*ct_rsp;

	if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
		return (qla2x00_sns_gpn_id(ha, list));
	}

	for (i = 0; i < MAX_FIBRE_DEVICES; i++) {
		/* Issue GPN_ID */
		/* Prepare common MS IOCB */
		ms_pkt = ha->isp_ops.prep_ms_iocb(ha, GPN_ID_REQ_SIZE,
		    GPN_ID_RSP_SIZE);

		/* Prepare CT request */
		ct_req = qla2x00_prep_ct_req(&ha->ct_sns->p.req, GPN_ID_CMD,
		    GPN_ID_RSP_SIZE);
		ct_rsp = &ha->ct_sns->p.rsp;

		/* Prepare CT arguments -- port_id */
		ct_req->req.port_id.port_id[0] = list[i].d_id.b.domain;
		ct_req->req.port_id.port_id[1] = list[i].d_id.b.area;
		ct_req->req.port_id.port_id[2] = list[i].d_id.b.al_pa;

		/* Execute MS IOCB */
		rval = qla2x00_issue_iocb(ha, ha->ms_iocb, ha->ms_iocb_dma,
		    sizeof(ms_iocb_entry_t));
		if (rval != QLA_SUCCESS) {
			/*EMPTY*/
			DEBUG2_3(printk("scsi(%ld): GPN_ID issue IOCB failed "
			    "(%d).\n", ha->host_no, rval));
		} else if (qla2x00_chk_ms_status(ha, ms_pkt, ct_rsp,
		    "GPN_ID") != QLA_SUCCESS) {
			rval = QLA_FUNCTION_FAILED;
		} else {
			/* Save portname */
			memcpy(list[i].port_name,
			    ct_rsp->rsp.gpn_id.port_name, WWN_SIZE);
		}

		/* Last device exit. */
		if (list[i].d_id.b.rsvd_1 != 0)
			break;
	}

	return (rval);
}

/**
 * qla2x00_gnn_id() - SNS Get Node Name (GNN_ID) query.
 * @ha: HA context
 * @list: switch info entries to populate
 *
 * Returns 0 on success.
 */
int
qla2x00_gnn_id(scsi_qla_host_t *ha, sw_info_t *list)
{
	int		rval;
	uint16_t	i;

	ms_iocb_entry_t	*ms_pkt;
	struct ct_sns_req	*ct_req;
	struct ct_sns_rsp	*ct_rsp;

	if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
		return (qla2x00_sns_gnn_id(ha, list));
	}

	for (i = 0; i < MAX_FIBRE_DEVICES; i++) {
		/* Issue GNN_ID */
		/* Prepare common MS IOCB */
		ms_pkt = ha->isp_ops.prep_ms_iocb(ha, GNN_ID_REQ_SIZE,
		    GNN_ID_RSP_SIZE);

		/* Prepare CT request */
		ct_req = qla2x00_prep_ct_req(&ha->ct_sns->p.req, GNN_ID_CMD,
		    GNN_ID_RSP_SIZE);
		ct_rsp = &ha->ct_sns->p.rsp;

		/* Prepare CT arguments -- port_id */
		ct_req->req.port_id.port_id[0] = list[i].d_id.b.domain;
		ct_req->req.port_id.port_id[1] = list[i].d_id.b.area;
		ct_req->req.port_id.port_id[2] = list[i].d_id.b.al_pa;

		/* Execute MS IOCB */
		rval = qla2x00_issue_iocb(ha, ha->ms_iocb, ha->ms_iocb_dma,