qla_init.c

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		chksum += *ptr++;

	DEBUG5(printk("scsi(%ld): Contents of NVRAM\n", ha->host_no));
	DEBUG5(qla2x00_dump_buffer((uint8_t *)nv, ha->nvram_size));

	/* Bad NVRAM data, set defaults parameters. */
	if (chksum || nv->id[0] != 'I' || nv->id[1] != 'S' ||
	    nv->id[2] != 'P' || nv->id[3] != ' ' || nv->nvram_version < 1) {
		/* Reset NVRAM data. */
		qla_printk(KERN_WARNING, ha, "Inconsistent NVRAM detected: "
		    "checksum=0x%x id=%c version=0x%x.\n", chksum, nv->id[0],
		    nv->nvram_version);
		qla_printk(KERN_WARNING, ha, "Falling back to functioning (yet "
		    "invalid -- WWPN) defaults.\n");

		/*
		 * Set default initialization control block.
		 */
		memset(nv, 0, ha->nvram_size);
		nv->parameter_block_version = ICB_VERSION;

		if (IS_QLA23XX(ha)) {
			nv->firmware_options[0] = BIT_2 | BIT_1;
			nv->firmware_options[1] = BIT_7 | BIT_5;
			nv->add_firmware_options[0] = BIT_5;
			nv->add_firmware_options[1] = BIT_5 | BIT_4;
			nv->frame_payload_size = __constant_cpu_to_le16(2048);
			nv->special_options[1] = BIT_7;
		} else if (IS_QLA2200(ha)) {
			nv->firmware_options[0] = BIT_2 | BIT_1;
			nv->firmware_options[1] = BIT_7 | BIT_5;
			nv->add_firmware_options[0] = BIT_5;
			nv->add_firmware_options[1] = BIT_5 | BIT_4;
			nv->frame_payload_size = __constant_cpu_to_le16(1024);
		} else if (IS_QLA2100(ha)) {
			nv->firmware_options[0] = BIT_3 | BIT_1;
			nv->firmware_options[1] = BIT_5;
			nv->frame_payload_size = __constant_cpu_to_le16(1024);
		}

		nv->max_iocb_allocation = __constant_cpu_to_le16(256);
		nv->execution_throttle = __constant_cpu_to_le16(16);
		nv->retry_count = 8;
		nv->retry_delay = 1;

		nv->port_name[0] = 33;
		nv->port_name[3] = 224;
		nv->port_name[4] = 139;

		qla2xxx_nvram_wwn_from_ofw(ha, nv);

		nv->login_timeout = 4;

		/*
		 * Set default host adapter parameters
		 */
		nv->host_p[1] = BIT_2;
		nv->reset_delay = 5;
		nv->port_down_retry_count = 8;
		nv->max_luns_per_target = __constant_cpu_to_le16(8);
		nv->link_down_timeout = 60;

		rval = 1;
	}

#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
	/*
	 * The SN2 does not provide BIOS emulation which means you can't change
	 * potentially bogus BIOS settings. Force the use of default settings
	 * for link rate and frame size.  Hope that the rest of the settings
	 * are valid.
	 */
	if (ia64_platform_is("sn2")) {
		nv->frame_payload_size = __constant_cpu_to_le16(2048);
		if (IS_QLA23XX(ha))
			nv->special_options[1] = BIT_7;
	}
#endif

	/* Reset Initialization control block */
	memset(icb, 0, ha->init_cb_size);

	/*
	 * Setup driver NVRAM options.
	 */
	nv->firmware_options[0] |= (BIT_6 | BIT_1);
	nv->firmware_options[0] &= ~(BIT_5 | BIT_4);
	nv->firmware_options[1] |= (BIT_5 | BIT_0);
	nv->firmware_options[1] &= ~BIT_4;

	if (IS_QLA23XX(ha)) {
		nv->firmware_options[0] |= BIT_2;
		nv->firmware_options[0] &= ~BIT_3;
		nv->add_firmware_options[1] |= BIT_5 | BIT_4;

		if (IS_QLA2300(ha)) {
			if (ha->fb_rev == FPM_2310) {
				strcpy(ha->model_number, "QLA2310");
			} else {
				strcpy(ha->model_number, "QLA2300");
			}
		} else {
			qla2x00_set_model_info(ha, nv->model_number,
			    sizeof(nv->model_number), "QLA23xx");
		}
	} else if (IS_QLA2200(ha)) {
		nv->firmware_options[0] |= BIT_2;
		/*
		 * 'Point-to-point preferred, else loop' is not a safe
		 * connection mode setting.
		 */
		if ((nv->add_firmware_options[0] & (BIT_6 | BIT_5 | BIT_4)) ==
		    (BIT_5 | BIT_4)) {
			/* Force 'loop preferred, else point-to-point'. */
			nv->add_firmware_options[0] &= ~(BIT_6 | BIT_5 | BIT_4);
			nv->add_firmware_options[0] |= BIT_5;
		}
		strcpy(ha->model_number, "QLA22xx");
	} else /*if (IS_QLA2100(ha))*/ {
		strcpy(ha->model_number, "QLA2100");
	}

	/*
	 * Copy over NVRAM RISC parameter block to initialization control block.
	 */
	dptr1 = (uint8_t *)icb;
	dptr2 = (uint8_t *)&nv->parameter_block_version;
	cnt = (uint8_t *)&icb->request_q_outpointer - (uint8_t *)&icb->version;
	while (cnt--)
		*dptr1++ = *dptr2++;

	/* Copy 2nd half. */
	dptr1 = (uint8_t *)icb->add_firmware_options;
	cnt = (uint8_t *)icb->reserved_3 - (uint8_t *)icb->add_firmware_options;
	while (cnt--)
		*dptr1++ = *dptr2++;

	/* Use alternate WWN? */
	if (nv->host_p[1] & BIT_7) {
		memcpy(icb->node_name, nv->alternate_node_name, WWN_SIZE);
		memcpy(icb->port_name, nv->alternate_port_name, WWN_SIZE);
	}

	/* Prepare nodename */
	if ((icb->firmware_options[1] & BIT_6) == 0) {
		/*
		 * Firmware will apply the following mask if the nodename was
		 * not provided.
		 */
		memcpy(icb->node_name, icb->port_name, WWN_SIZE);
		icb->node_name[0] &= 0xF0;
	}

	/*
	 * Set host adapter parameters.
	 */
	if (nv->host_p[0] & BIT_7)
		ql2xextended_error_logging = 1;
	ha->flags.disable_risc_code_load = ((nv->host_p[0] & BIT_4) ? 1 : 0);
	/* Always load RISC code on non ISP2[12]00 chips. */
	if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
		ha->flags.disable_risc_code_load = 0;
	ha->flags.enable_lip_reset = ((nv->host_p[1] & BIT_1) ? 1 : 0);
	ha->flags.enable_lip_full_login = ((nv->host_p[1] & BIT_2) ? 1 : 0);
	ha->flags.enable_target_reset = ((nv->host_p[1] & BIT_3) ? 1 : 0);
	ha->flags.enable_led_scheme = (nv->special_options[1] & BIT_4) ? 1 : 0;
	ha->flags.disable_serdes = 0;

	ha->operating_mode =
	    (icb->add_firmware_options[0] & (BIT_6 | BIT_5 | BIT_4)) >> 4;

	memcpy(ha->fw_seriallink_options, nv->seriallink_options,
	    sizeof(ha->fw_seriallink_options));

	/* save HBA serial number */
	ha->serial0 = icb->port_name[5];
	ha->serial1 = icb->port_name[6];
	ha->serial2 = icb->port_name[7];
	ha->node_name = icb->node_name;
	ha->port_name = icb->port_name;

	icb->execution_throttle = __constant_cpu_to_le16(0xFFFF);

	ha->retry_count = nv->retry_count;

	/* Set minimum login_timeout to 4 seconds. */
	if (nv->login_timeout < ql2xlogintimeout)
		nv->login_timeout = ql2xlogintimeout;
	if (nv->login_timeout < 4)
		nv->login_timeout = 4;
	ha->login_timeout = nv->login_timeout;
	icb->login_timeout = nv->login_timeout;

	/* Set minimum RATOV to 200 tenths of a second. */
	ha->r_a_tov = 200;

	ha->loop_reset_delay = nv->reset_delay;

	/* Link Down Timeout = 0:
	 *
	 * 	When Port Down timer expires we will start returning
	 *	I/O's to OS with "DID_NO_CONNECT".
	 *
	 * Link Down Timeout != 0:
	 *
	 *	 The driver waits for the link to come up after link down
	 *	 before returning I/Os to OS with "DID_NO_CONNECT".
	 */
	if (nv->link_down_timeout == 0) {
		ha->loop_down_abort_time =
		    (LOOP_DOWN_TIME - LOOP_DOWN_TIMEOUT);
	} else {
		ha->link_down_timeout =	 nv->link_down_timeout;
		ha->loop_down_abort_time =
		    (LOOP_DOWN_TIME - ha->link_down_timeout);
	}

	/*
	 * Need enough time to try and get the port back.
	 */
	ha->port_down_retry_count = nv->port_down_retry_count;
	if (qlport_down_retry)
		ha->port_down_retry_count = qlport_down_retry;
	/* Set login_retry_count */
	ha->login_retry_count  = nv->retry_count;
	if (ha->port_down_retry_count == nv->port_down_retry_count &&
	    ha->port_down_retry_count > 3)
		ha->login_retry_count = ha->port_down_retry_count;
	else if (ha->port_down_retry_count > (int)ha->login_retry_count)
		ha->login_retry_count = ha->port_down_retry_count;
	if (ql2xloginretrycount)
		ha->login_retry_count = ql2xloginretrycount;

	icb->lun_enables = __constant_cpu_to_le16(0);
	icb->command_resource_count = 0;
	icb->immediate_notify_resource_count = 0;
	icb->timeout = __constant_cpu_to_le16(0);

	if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
		/* Enable RIO */
		icb->firmware_options[0] &= ~BIT_3;
		icb->add_firmware_options[0] &=
		    ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
		icb->add_firmware_options[0] |= BIT_2;
		icb->response_accumulation_timer = 3;
		icb->interrupt_delay_timer = 5;

		ha->flags.process_response_queue = 1;
	} else {
		/* Enable ZIO. */
		if (!ha->flags.init_done) {
			ha->zio_mode = icb->add_firmware_options[0] &
			    (BIT_3 | BIT_2 | BIT_1 | BIT_0);
			ha->zio_timer = icb->interrupt_delay_timer ?
			    icb->interrupt_delay_timer: 2;
		}
		icb->add_firmware_options[0] &=
		    ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
		ha->flags.process_response_queue = 0;
		if (ha->zio_mode != QLA_ZIO_DISABLED) {
			ha->zio_mode = QLA_ZIO_MODE_6;

			DEBUG2(printk("scsi(%ld): ZIO mode %d enabled; timer "
			    "delay (%d us).\n", ha->host_no, ha->zio_mode,
			    ha->zio_timer * 100));
			qla_printk(KERN_INFO, ha,
			    "ZIO mode %d enabled; timer delay (%d us).\n",
			    ha->zio_mode, ha->zio_timer * 100);

			icb->add_firmware_options[0] |= (uint8_t)ha->zio_mode;
			icb->interrupt_delay_timer = (uint8_t)ha->zio_timer;
			ha->flags.process_response_queue = 1;
		}
	}

	if (rval) {
		DEBUG2_3(printk(KERN_WARNING
		    "scsi(%ld): NVRAM configuration failed!\n", ha->host_no));
	}
	return (rval);
}

static void
qla2x00_rport_del(void *data)
{
	fc_port_t *fcport = data;
	struct fc_rport *rport;
	unsigned long flags;

	spin_lock_irqsave(&fcport->rport_lock, flags);
	rport = fcport->drport;
	fcport->drport = NULL;
	spin_unlock_irqrestore(&fcport->rport_lock, flags);
	if (rport)
		fc_remote_port_delete(rport);
}

/**
 * qla2x00_alloc_fcport() - Allocate a generic fcport.
 * @ha: HA context
 * @flags: allocation flags
 *
 * Returns a pointer to the allocated fcport, or NULL, if none available.
 */
static fc_port_t *
qla2x00_alloc_fcport(scsi_qla_host_t *ha, gfp_t flags)
{
	fc_port_t *fcport;

	fcport = kzalloc(sizeof(fc_port_t), flags);
	if (!fcport)
		return NULL;

	/* Setup fcport template structure. */
	fcport->ha = ha;
	fcport->vp_idx = ha->vp_idx;
	fcport->port_type = FCT_UNKNOWN;
	fcport->loop_id = FC_NO_LOOP_ID;
	atomic_set(&fcport->state, FCS_UNCONFIGURED);
	fcport->flags = FCF_RLC_SUPPORT;
	fcport->supported_classes = FC_COS_UNSPECIFIED;
	spin_lock_init(&fcport->rport_lock);

	return fcport;
}

/*
 * qla2x00_configure_loop
 *      Updates Fibre Channel Device Database with what is actually on loop.
 *
 * Input:
 *      ha                = adapter block pointer.
 *
 * Returns:
 *      0 = success.
 *      1 = error.
 *      2 = database was full and device was not configured.
 */
static int
qla2x00_configure_loop(scsi_qla_host_t *ha)
{
	int  rval;
	unsigned long flags, save_flags;

	rval = QLA_SUCCESS;

	/* Get Initiator ID */
	if (test_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags)) {
		rval = qla2x00_configure_hba(ha);
		if (rval != QLA_SUCCESS) {
			DEBUG(printk("scsi(%ld): Unable to configure HBA.\n",
			    ha->host_no));
			return (rval);
		}
	}

	save_flags = flags = ha->dpc_flags;
	DEBUG(printk("scsi(%ld): Configure loop -- dpc flags =0x%lx\n",
	    ha->host_no, flags));

	/*
	 * If we have both an RSCN and PORT UPDATE pending then handle them
	 * both at the same time.
	 */
	clear_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
	clear_bit(RSCN_UPDATE, &ha->dpc_flags);

	/* Determine what we need to do */
	if (ha->current_topology == ISP_CFG_FL &&
	    (test_bit(LOCAL_LOOP_UPDATE, &flags))) {

		ha->flags.rscn_queue_overflow = 1;
		set_bit(RSCN_UPDATE, &flags);

	} else if (ha->current_topology == ISP_CFG_F &&
	    (test_bit(LOCAL_LOOP_UPDATE, &flags))) {

		ha->flags.rscn_queue_overflow = 1;
		set_bit(RSCN_UPDATE, &flags);
		clear_bit(LOCAL_LOOP_UPDATE, &flags);

	} else if (ha->current_topology == ISP_CFG_N) {
		clear_bit(RSCN_UPDATE, &flags);

	} else if (!ha->flags.online ||
	    (test_bit(ABORT_ISP_ACTIVE, &flags))) {

		ha->flags.rscn_queue_overflow = 1;
		set_bit(RSCN_UPDATE, &flags);
		set_bit(LOCAL_LOOP_UPDATE, &flags);
	}

	if (test_bit(LOCAL_LOOP_UPDATE, &flags)) {
		if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
			rval = QLA_FUNCTION_FAILED;
		} else {
			rval = qla2x00_configure_local_loop(ha);
		}
	}

	if (rval == QLA_SUCCESS && test_bit(RSCN_UPDATE, &flags)) {
		if (LOOP_TRANSITION(ha)) {
			rval = QLA_FUNCTION_FAILED;
		} else {
			rval = qla2x00_configure_fabric(ha);
		}
	}

	if (rval == QLA_SUCCESS) {
		if (atomic_read(&ha->loop_down_timer) ||
		    test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
			rval = QLA_FUNCTION_FAILED;
		} else {
			atomic_set(&ha->loop_state, LOOP_READY);

			DEBUG(printk("scsi(%ld): LOOP READY\n", ha->host_no));
		}
	}

	if (rval) {
		DEBUG2_3(printk("%s(%ld): *** FAILED ***\n",
		    __func__, ha->host_no));
	} else {
		DEBUG3(printk("%s: exiting normally\n", __func__));
	}

	/* Restore state if a resync event occured during processing */
	if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
		if (test_bit(LOCAL_LOOP_UPDATE, &save_flags))
			set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
		if (test_bit(RSCN_UPDATE, &save_flags))
			set_bit(RSCN_UPDATE, &ha->dpc_flags);
	}

	return (rval);
}



/*
 * qla2x00_configure_local_loop
 *	Updates Fibre Channel Device Database with local loop devices.
 *
 * Input:
 *	ha = adapter block pointer.
 *
 * Returns:
 *	0 = success.
 */
static int
qla2x00_configure_local_loop(scsi_qla_host_t *ha)
{
	int		rval, rval2;
	int		found_devs;
	int		found;
	fc_port_t	*fcport, *new_fcport;

	uint16_t	index;
	uint16_t	entries;
	char		*id_iter;
	uint16_t	loop_id;
	uint8_t		domain, area, al_pa;
	scsi_qla_host_t *pha = to_qla_parent(ha);

	found_devs = 0;
	new_fcport = NULL;
	entries = MAX_FIBRE_DEVICES;

	DEBUG3(printk("scsi(%ld): Getting FCAL position map\n", ha->host_no));
	DEBUG3(qla2x00_get_fcal_position_map(ha, NULL));

	/* Get list of logged in devices. */
	memset(ha->gid_list, 0, GID_LIST_SIZE);
	rval = qla2x00_get_id_list(ha, ha->gid_list, ha->gid_list_dma,
	    &entries);
	if (rval != QLA_SUCCESS)
		goto cleanup_allocation;

	DEBUG3(printk("scsi(%ld): Entries in ID list (%d)\n",
	    ha->host_no, entries));
	DEBUG3(qla2x00_dump_buffer((uint8_t *)ha->gid_list,
	    entries * sizeof(struct gid_list_info)));

	/* Allocate temporary fcport for any new fcports discovered. */
	new_fcport = qla2x00_alloc_fcport(ha, GFP_KERNEL);
	if (new_fcport == NULL) {
		rval = QLA_MEMORY_ALLOC_FAILED;
		goto cleanup_allocation;
	}
	new_fcport->flags &= ~FCF_FABRIC_DEVICE;

	/*
	 * Mark local devices that were present with FCF_DEVICE_LOST for now.
	 */
	list_for_each_entry(fcport, &pha->fcports, list) {