qla_init.c

来自「优龙2410linux2.6.8内核源代码」· C语言 代码 · 共 2,528 行 · 第 1/5 页

	/* Get host addresses. */
	rval = qla2x00_get_adapter_id(ha,
	    &loop_id, &al_pa, &area, &domain, &topo);
	if (rval != QLA_SUCCESS) {
		qla_printk(KERN_WARNING, ha,
		    "ERROR -- Unable to get host loop ID.\n");
		return (rval);
	}

	if (topo == 4) {
		qla_printk(KERN_INFO, ha,
			"Cannot get topology - retrying.\n");
		return (QLA_FUNCTION_FAILED);
	}

	ha->loop_id = loop_id;

	/* initialize */
	ha->min_external_loopid = SNS_FIRST_LOOP_ID;
	ha->operating_mode = LOOP;

	switch (topo) {
	case 0:
		DEBUG3(printk("scsi(%ld): HBA in NL topology.\n",
		    ha->host_no));
		ha->current_topology = ISP_CFG_NL;
		strcpy(connect_type, "(Loop)");
		break;

	case 1:
		DEBUG3(printk("scsi(%ld): HBA in FL topology.\n",
		    ha->host_no));
		ha->current_topology = ISP_CFG_FL;
		strcpy(connect_type, "(FL_Port)");
		break;

	case 2:
		DEBUG3(printk("scsi(%ld): HBA in N P2P topology.\n",
		    ha->host_no));
		ha->operating_mode = P2P;
		ha->current_topology = ISP_CFG_N;
		strcpy(connect_type, "(N_Port-to-N_Port)");
		break;

	case 3:
		DEBUG3(printk("scsi(%ld): HBA in F P2P topology.\n",
		    ha->host_no));
		ha->operating_mode = P2P;
		ha->current_topology = ISP_CFG_F;
		strcpy(connect_type, "(F_Port)");
		break;

	default:
		DEBUG3(printk("scsi(%ld): HBA in unknown topology %x. "
		    "Using NL.\n",
		    ha->host_no, topo));
		ha->current_topology = ISP_CFG_NL;
		strcpy(connect_type, "(Loop)");
		break;
	}

	/* Save Host port and loop ID. */
	/* byte order - Big Endian */
	ha->d_id.b.domain = domain;
	ha->d_id.b.area = area;
	ha->d_id.b.al_pa = al_pa;

	if (!ha->flags.init_done)
 		qla_printk(KERN_INFO, ha,
		    "Topology - %s, Host Loop address 0x%x\n",
 		    connect_type, ha->loop_id);

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

	return(rval);
}

/*
* NVRAM configuration for ISP 2xxx
*
* Input:
*      ha                = adapter block pointer.
*
* Output:
*      initialization control block in response_ring
*      host adapters parameters in host adapter block
*
* Returns:
*      0 = success.
*/
static int
qla2x00_nvram_config(scsi_qla_host_t *ha)
{
	int   rval;
	uint8_t   chksum = 0;
	uint16_t  cnt;
	uint8_t   *dptr1, *dptr2;
	init_cb_t *icb   = ha->init_cb;
	nvram_t *nv    = (nvram_t *)ha->request_ring;
	uint16_t  *wptr  = (uint16_t *)ha->request_ring;
	device_reg_t *reg = ha->iobase;
	uint8_t  timer_mode;

	rval = QLA_SUCCESS;

	if (ha->flags.init_done)
		return (rval);

	/* Determine NVRAM starting address. */
	ha->nvram_base = 0;
	if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA2300(ha))
		if ((RD_REG_WORD(&reg->ctrl_status) >> 14) == 1)
			ha->nvram_base = 0x80;

	/* Get NVRAM data and calculate checksum. */
	qla2x00_lock_nvram_access(ha);
	for (cnt = 0; cnt < sizeof(nvram_t)/2; cnt++) {
		*wptr = cpu_to_le16(qla2x00_get_nvram_word(ha,
		    (cnt+ha->nvram_base)));
		chksum += (uint8_t)*wptr;
		chksum += (uint8_t)(*wptr >> 8);
		wptr++;
	}
	qla2x00_unlock_nvram_access(ha);

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

	/* 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, sizeof(nvram_t));
		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;

		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, sizeof(init_cb_t));

	/*
	 * 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;

		if (IS_QLA2300(ha)) {
			if (ha->fb_rev == FPM_2310) {
				strcpy(ha->model_number, "QLA2310");
			} else {
				strcpy(ha->model_number, "QLA2300");
			}
		} else {
			if (rval == 0 &&
			    memcmp(nv->model_number, BINZERO,
				    sizeof(nv->model_number)) != 0) {
				char *st, *en;

				strncpy(ha->model_number, nv->model_number,
				    sizeof(nv->model_number));
				st = en = ha->model_number;
				en += sizeof(nv->model_number) - 1;
				while (en > st) {
					if (*en != 0x20 && *en != 0x00)
						break;
					*en-- = '\0';
				}
			} else {
				uint16_t        index;

				index = (ha->pdev->subsystem_device & 0xff);
				if (index < QLA_MODEL_NAMES) {
					strcpy(ha->model_number,
					    qla2x00_model_name[index]);
					ha->model_desc =
					    qla2x00_model_desc[index];
				} else {
					strcpy(ha->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++;

	/* 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.
	 */
	ha->nvram_version = nv->nvram_version;

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

	ha->fw_seriallink_options[0] = nv->seriallink_options[0];
	ha->fw_seriallink_options[1] = nv->seriallink_options[1];

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

	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->minimum_timeout =
	    (ha->login_timeout * ha->retry_count) + nv->port_down_retry_count;
	ha->loop_reset_delay = nv->reset_delay;

	/* Will get the value from NVRAM. */
	ha->loop_down_timeout = LOOP_DOWN_TIMEOUT;

	/* 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 - ha->loop_down_timeout);
	} else {
		ha->link_down_timeout =	 nv->link_down_timeout;
		ha->loop_down_abort_time =
		    (LOOP_DOWN_TIME - ha->link_down_timeout);
	} 

	ha->max_luns = MAX_LUNS;
	ha->max_probe_luns = le16_to_cpu(nv->max_luns_per_target);
	if (ha->max_probe_luns == 0)
		ha->max_probe_luns = MIN_LUNS;

	/*
	 * 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;

	ha->binding_type = Bind;
	if (ha->binding_type != BIND_BY_PORT_NAME &&
	    ha->binding_type != BIND_BY_PORT_ID) {
		qla_printk(KERN_WARNING, ha,
		    "Invalid binding type specified (%d), "
		    "defaulting to BIND_BY_PORT_NAME!!!\n", ha->binding_type);

		ha->binding_type = BIND_BY_PORT_NAME;
	}

	/*
	 * Setup ring parameters in initialization control block
	 */
	icb->request_q_outpointer = __constant_cpu_to_le16(0);
	icb->response_q_inpointer = __constant_cpu_to_le16(0);
	icb->request_q_length = cpu_to_le16(ha->request_q_length);
	icb->response_q_length = cpu_to_le16(ha->response_q_length);
	icb->request_q_address[0] = cpu_to_le32(LSD(ha->request_dma));
	icb->request_q_address[1] = cpu_to_le32(MSD(ha->request_dma));
	icb->response_q_address[0] = cpu_to_le32(LSD(ha->response_dma));
	icb->response_q_address[1] = cpu_to_le32(MSD(ha->response_dma));

	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 -- Support mode 5 only. */
		timer_mode = icb->add_firmware_options[0] &
		    (BIT_3 | BIT_2 | BIT_1 | BIT_0);
		icb->add_firmware_options[0] &=
		    ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
		if (ql2xenablezio)
			timer_mode = BIT_2 | BIT_0;
		if (timer_mode == (BIT_2 | BIT_0)) {
			DEBUG2(printk("scsi(%ld): ZIO enabled; timer delay "
			    "(%d).\n", ha->host_no, ql2xintrdelaytimer));
			qla_printk(KERN_INFO, ha,
			    "ZIO enabled; timer delay (%d).\n",
			    ql2xintrdelaytimer);

			icb->add_firmware_options[0] |= timer_mode;
			icb->interrupt_delay_timer = ql2xintrdelaytimer;
			ha->flags.process_response_queue = 1;
		}
	}

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

/*
* qla2x00_init_tgt_map
*      Initializes target map.
*
* Input:
*      ha = adapter block pointer.
*
* Output:
*      TGT_Q initialized
*/
static void
qla2x00_init_tgt_map(scsi_qla_host_t *ha)
{
	uint32_t t;

	for (t = 0; t < MAX_TARGETS; t++)
		TGT_Q(ha, t) = (os_tgt_t *)NULL;
}

/**
 * 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.
 */
fc_port_t *
qla2x00_alloc_fcport(scsi_qla_host_t *ha, int flags)
{
	fc_port_t *fcport;

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

	/* Setup fcport template structure. */
	memset(fcport, 0, sizeof (fc_port_t));
	fcport->ha = ha;
	fcport->port_type = FCT_UNKNOWN;
	fcport->loop_id = FC_NO_LOOP_ID;
	fcport->iodesc_idx_sent = IODESC_INVALID_INDEX;
	atomic_set(&fcport->state, FCS_UNCONFIGURED);
	fcport->flags = FCF_RLC_SUPPORT;
	INIT_LIST_HEAD(&fcport->fcluns);

	return (fcport);
}

/*
 * qla2x00_configure_loop
 *      Updates Fibre Channel Device Database with what is actually on loop.
 *
 * Input:
 *      ha                = adapter block pointer.
 *
 * Returns: