lpfc_init.c

linux-2.6.15.6

	}

	spin_unlock_irq(phba->host->host_lock);

	return 0;
}


static int __devinit
lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
{
	struct Scsi_Host *host;
	struct lpfc_hba  *phba;
	struct lpfc_sli  *psli;
	struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
	unsigned long bar0map_len, bar2map_len;
	int error = -ENODEV, retval;
	int i;
	uint16_t iotag;

	if (pci_enable_device(pdev))
		goto out;
	if (pci_request_regions(pdev, LPFC_DRIVER_NAME))
		goto out_disable_device;

	host = scsi_host_alloc(&lpfc_template, sizeof (struct lpfc_hba));
	if (!host)
		goto out_release_regions;

	phba = (struct lpfc_hba*)host->hostdata;
	memset(phba, 0, sizeof (struct lpfc_hba));
	phba->host = host;

	phba->fc_flag |= FC_LOADING;
	phba->pcidev = pdev;

	/* Assign an unused board number */
	if (!idr_pre_get(&lpfc_hba_index, GFP_KERNEL))
		goto out_put_host;

	error = idr_get_new(&lpfc_hba_index, NULL, &phba->brd_no);
	if (error)
		goto out_put_host;

	host->unique_id = phba->brd_no;

	INIT_LIST_HEAD(&phba->ctrspbuflist);
	INIT_LIST_HEAD(&phba->rnidrspbuflist);
	INIT_LIST_HEAD(&phba->freebufList);

	/* Initialize timers used by driver */
	init_timer(&phba->fc_estabtmo);
	phba->fc_estabtmo.function = lpfc_establish_link_tmo;
	phba->fc_estabtmo.data = (unsigned long)phba;
	init_timer(&phba->fc_disctmo);
	phba->fc_disctmo.function = lpfc_disc_timeout;
	phba->fc_disctmo.data = (unsigned long)phba;

	init_timer(&phba->fc_fdmitmo);
	phba->fc_fdmitmo.function = lpfc_fdmi_tmo;
	phba->fc_fdmitmo.data = (unsigned long)phba;
	init_timer(&phba->els_tmofunc);
	phba->els_tmofunc.function = lpfc_els_timeout;
	phba->els_tmofunc.data = (unsigned long)phba;
	psli = &phba->sli;
	init_timer(&psli->mbox_tmo);
	psli->mbox_tmo.function = lpfc_mbox_timeout;
	psli->mbox_tmo.data = (unsigned long)phba;

	/*
	 * Get all the module params for configuring this host and then
	 * establish the host parameters.
	 */
	lpfc_get_cfgparam(phba);

	host->max_id = LPFC_MAX_TARGET;
	host->max_lun = phba->cfg_max_luns;
	host->this_id = -1;

	/* Initialize all internally managed lists. */
	INIT_LIST_HEAD(&phba->fc_nlpmap_list);
	INIT_LIST_HEAD(&phba->fc_nlpunmap_list);
	INIT_LIST_HEAD(&phba->fc_unused_list);
	INIT_LIST_HEAD(&phba->fc_plogi_list);
	INIT_LIST_HEAD(&phba->fc_adisc_list);
	INIT_LIST_HEAD(&phba->fc_reglogin_list);
	INIT_LIST_HEAD(&phba->fc_prli_list);
	INIT_LIST_HEAD(&phba->fc_npr_list);


	pci_set_master(pdev);
	retval = pci_set_mwi(pdev);
	if (retval)
		dev_printk(KERN_WARNING, &pdev->dev,
			   "Warning: pci_set_mwi returned %d\n", retval);

	if (pci_set_dma_mask(phba->pcidev, DMA_64BIT_MASK) != 0)
		if (pci_set_dma_mask(phba->pcidev, DMA_32BIT_MASK) != 0)
			goto out_idr_remove;

	/*
	 * Get the bus address of Bar0 and Bar2 and the number of bytes
	 * required by each mapping.
	 */
	phba->pci_bar0_map = pci_resource_start(phba->pcidev, 0);
	bar0map_len        = pci_resource_len(phba->pcidev, 0);

	phba->pci_bar2_map = pci_resource_start(phba->pcidev, 2);
	bar2map_len        = pci_resource_len(phba->pcidev, 2);

	/* Map HBA SLIM and Control Registers to a kernel virtual address. */
	phba->slim_memmap_p      = ioremap(phba->pci_bar0_map, bar0map_len);
	phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);

	/* Allocate memory for SLI-2 structures */
	phba->slim2p = dma_alloc_coherent(&phba->pcidev->dev, SLI2_SLIM_SIZE,
					  &phba->slim2p_mapping, GFP_KERNEL);
	if (!phba->slim2p)
		goto out_iounmap;

	memset(phba->slim2p, 0, SLI2_SLIM_SIZE);

	/* Initialize the SLI Layer to run with lpfc HBAs. */
	lpfc_sli_setup(phba);
	lpfc_sli_queue_setup(phba);

	error = lpfc_mem_alloc(phba);
	if (error)
		goto out_free_slim;

	/* Initialize and populate the iocb list per host.  */
	INIT_LIST_HEAD(&phba->lpfc_iocb_list);
	for (i = 0; i < LPFC_IOCB_LIST_CNT; i++) {
		iocbq_entry = kmalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
		if (iocbq_entry == NULL) {
			printk(KERN_ERR "%s: only allocated %d iocbs of "
				"expected %d count. Unloading driver.\n",
				__FUNCTION__, i, LPFC_IOCB_LIST_CNT);
			error = -ENOMEM;
			goto out_free_iocbq;
		}

		memset(iocbq_entry, 0, sizeof(struct lpfc_iocbq));
		iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
		if (iotag == 0) {
			kfree (iocbq_entry);
			printk(KERN_ERR "%s: failed to allocate IOTAG. "
			       "Unloading driver.\n",
				__FUNCTION__);
			error = -ENOMEM;
			goto out_free_iocbq;
		}
		spin_lock_irq(phba->host->host_lock);
		list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
		phba->total_iocbq_bufs++;
		spin_unlock_irq(phba->host->host_lock);
	}

	/* Initialize HBA structure */
	phba->fc_edtov = FF_DEF_EDTOV;
	phba->fc_ratov = FF_DEF_RATOV;
	phba->fc_altov = FF_DEF_ALTOV;
	phba->fc_arbtov = FF_DEF_ARBTOV;

	INIT_LIST_HEAD(&phba->work_list);
	phba->work_ha_mask = (HA_ERATT|HA_MBATT|HA_LATT);
	phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));

	/* Startup the kernel thread for this host adapter. */
	phba->worker_thread = kthread_run(lpfc_do_work, phba,
				       "lpfc_worker_%d", phba->brd_no);
	if (IS_ERR(phba->worker_thread)) {
		error = PTR_ERR(phba->worker_thread);
		goto out_free_iocbq;
	}

	/* We can rely on a queue depth attribute only after SLI HBA setup */
	host->can_queue = phba->cfg_hba_queue_depth - 10;

	/* Tell the midlayer we support 16 byte commands */
	host->max_cmd_len = 16;

	/* Initialize the list of scsi buffers used by driver for scsi IO. */
	INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list);

	host->transportt = lpfc_transport_template;
	host->hostdata[0] = (unsigned long)phba;
	pci_set_drvdata(pdev, host);
	error = scsi_add_host(host, &pdev->dev);
	if (error)
		goto out_kthread_stop;

	error = lpfc_alloc_sysfs_attr(phba);
	if (error)
		goto out_kthread_stop;

	error =	request_irq(phba->pcidev->irq, lpfc_intr_handler, SA_SHIRQ,
							LPFC_DRIVER_NAME, phba);
	if (error) {
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
			"%d:0451 Enable interrupt handler failed\n",
			phba->brd_no);
		goto out_free_sysfs_attr;
	}
	phba->MBslimaddr = phba->slim_memmap_p;
	phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET;
	phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET;
	phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;
	phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;

	error = lpfc_sli_hba_setup(phba);
	if (error)
		goto out_free_irq;

	/*
	 * set fixed host attributes
	 * Must done after lpfc_sli_hba_setup()
	 */

	fc_host_node_name(host) = wwn_to_u64(phba->fc_nodename.u.wwn);
	fc_host_port_name(host) = wwn_to_u64(phba->fc_portname.u.wwn);
	fc_host_supported_classes(host) = FC_COS_CLASS3;

	memset(fc_host_supported_fc4s(host), 0,
		sizeof(fc_host_supported_fc4s(host)));
	fc_host_supported_fc4s(host)[2] = 1;
	fc_host_supported_fc4s(host)[7] = 1;

	lpfc_get_hba_sym_node_name(phba, fc_host_symbolic_name(host));

	fc_host_supported_speeds(host) = 0;
	switch (FC_JEDEC_ID(phba->vpd.rev.biuRev)) {
	case VIPER_JEDEC_ID:
		fc_host_supported_speeds(host) |= FC_PORTSPEED_10GBIT;
		break;
	case HELIOS_JEDEC_ID:
		fc_host_supported_speeds(host) |= FC_PORTSPEED_4GBIT;
		/* Fall through */
	case CENTAUR_2G_JEDEC_ID:
	case PEGASUS_JEDEC_ID:
	case THOR_JEDEC_ID:
		fc_host_supported_speeds(host) |= FC_PORTSPEED_2GBIT;
		/* Fall through */
	default:
		fc_host_supported_speeds(host) = FC_PORTSPEED_1GBIT;
	}

	fc_host_maxframe_size(host) =
		((((uint32_t) phba->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |
		 (uint32_t) phba->fc_sparam.cmn.bbRcvSizeLsb);

	/* This value is also unchanging */
	memset(fc_host_active_fc4s(host), 0,
		sizeof(fc_host_active_fc4s(host)));
	fc_host_active_fc4s(host)[2] = 1;
	fc_host_active_fc4s(host)[7] = 1;

	spin_lock_irq(phba->host->host_lock);
	phba->fc_flag &= ~FC_LOADING;
	spin_unlock_irq(phba->host->host_lock);
	return 0;

out_free_irq:
	lpfc_stop_timer(phba);
	phba->work_hba_events = 0;
	free_irq(phba->pcidev->irq, phba);
out_free_sysfs_attr:
	lpfc_free_sysfs_attr(phba);
out_kthread_stop:
	kthread_stop(phba->worker_thread);
out_free_iocbq:
	list_for_each_entry_safe(iocbq_entry, iocbq_next,
						&phba->lpfc_iocb_list, list) {
		spin_lock_irq(phba->host->host_lock);
		kfree(iocbq_entry);
		phba->total_iocbq_bufs--;
		spin_unlock_irq(phba->host->host_lock);
	}
	lpfc_mem_free(phba);
out_free_slim:
	dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE, phba->slim2p,
							phba->slim2p_mapping);
out_iounmap:
	iounmap(phba->ctrl_regs_memmap_p);
	iounmap(phba->slim_memmap_p);
out_idr_remove:
	idr_remove(&lpfc_hba_index, phba->brd_no);
out_put_host:
	scsi_host_put(host);
out_release_regions:
	pci_release_regions(pdev);
out_disable_device:
	pci_disable_device(pdev);
out:
	return error;
}

static void __devexit
lpfc_pci_remove_one(struct pci_dev *pdev)
{
	struct Scsi_Host   *host = pci_get_drvdata(pdev);
	struct lpfc_hba    *phba = (struct lpfc_hba *)host->hostdata[0];
	unsigned long iflag;

	lpfc_free_sysfs_attr(phba);

	spin_lock_irqsave(phba->host->host_lock, iflag);
	phba->fc_flag |= FC_UNLOADING;

	spin_unlock_irqrestore(phba->host->host_lock, iflag);

	fc_remove_host(phba->host);
	scsi_remove_host(phba->host);

	kthread_stop(phba->worker_thread);

	/*
	 * Bring down the SLI Layer. This step disable all interrupts,
	 * clears the rings, discards all mailbox commands, and resets
	 * the HBA.
	 */
	lpfc_sli_hba_down(phba);

	/* Release the irq reservation */
	free_irq(phba->pcidev->irq, phba);

	lpfc_cleanup(phba, 0);
	lpfc_stop_timer(phba);
	phba->work_hba_events = 0;

	/*
	 * Call scsi_free before mem_free since scsi bufs are released to their
	 * corresponding pools here.
	 */
	lpfc_scsi_free(phba);
	lpfc_mem_free(phba);

	/* Free resources associated with SLI2 interface */
	dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
			  phba->slim2p, phba->slim2p_mapping);

	/* unmap adapter SLIM and Control Registers */
	iounmap(phba->ctrl_regs_memmap_p);
	iounmap(phba->slim_memmap_p);

	pci_release_regions(phba->pcidev);
	pci_disable_device(phba->pcidev);

	idr_remove(&lpfc_hba_index, phba->brd_no);
	scsi_host_put(phba->host);

	pci_set_drvdata(pdev, NULL);
}

static struct pci_device_id lpfc_id_table[] = {
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_VIPER,
		PCI_ANY_ID, PCI_ANY_ID, },
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FIREFLY,
		PCI_ANY_ID, PCI_ANY_ID, },
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_THOR,
		PCI_ANY_ID, PCI_ANY_ID, },
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PEGASUS,
		PCI_ANY_ID, PCI_ANY_ID, },
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_CENTAUR,
		PCI_ANY_ID, PCI_ANY_ID, },
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_DRAGONFLY,
		PCI_ANY_ID, PCI_ANY_ID, },
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SUPERFLY,
		PCI_ANY_ID, PCI_ANY_ID, },
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_RFLY,
		PCI_ANY_ID, PCI_ANY_ID, },
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PFLY,
		PCI_ANY_ID, PCI_ANY_ID, },
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS,
		PCI_ANY_ID, PCI_ANY_ID, },
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BMID,
		PCI_ANY_ID, PCI_ANY_ID, },
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BSMB,
		PCI_ANY_ID, PCI_ANY_ID, },
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR,
		PCI_ANY_ID, PCI_ANY_ID, },
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZMID,
		PCI_ANY_ID, PCI_ANY_ID, },
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZSMB,
		PCI_ANY_ID, PCI_ANY_ID, },
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_TFLY,
		PCI_ANY_ID, PCI_ANY_ID, },
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP101,
		PCI_ANY_ID, PCI_ANY_ID, },
	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP10000S,
		PCI_ANY_ID, PCI_ANY_ID, },
	{ 0 }
};

MODULE_DEVICE_TABLE(pci, lpfc_id_table);

static struct pci_driver lpfc_driver = {
	.name		= LPFC_DRIVER_NAME,
	.id_table	= lpfc_id_table,
	.probe		= lpfc_pci_probe_one,
	.remove		= __devexit_p(lpfc_pci_remove_one),
};

static int __init
lpfc_init(void)
{
	int error = 0;

	printk(LPFC_MODULE_DESC "\n");
	printk(LPFC_COPYRIGHT "\n");

	lpfc_transport_template =
				fc_attach_transport(&lpfc_transport_functions);
	if (!lpfc_transport_template)
		return -ENOMEM;
	error = pci_register_driver(&lpfc_driver);
	if (error)
		fc_release_transport(lpfc_transport_template);

	return error;
}

static void __exit
lpfc_exit(void)
{
	pci_unregister_driver(&lpfc_driver);
	fc_release_transport(lpfc_transport_template);
}

module_init(lpfc_init);
module_exit(lpfc_exit);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION(LPFC_MODULE_DESC);
MODULE_AUTHOR("Emulex Corporation - [e-mail]");
MODULE_VERSION("0:" LPFC_DRIVER_VERSION);