/*
   * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
   * All rights reserved
   * www.brocade.com
   *
   * Linux driver for Brocade Fibre Channel Host Bus Adapter.
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License (GPL) Version 2 as
   * published by the Free Software Foundation
   *
   * This program is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * General Public License for more details.
   */
  
  /*
   *  bfad.c Linux driver PCI interface module.
   */
  #include <linux/module.h>
  #include <linux/kthread.h>
  #include <linux/errno.h>
  #include <linux/sched.h>
  #include <linux/init.h>
  #include <linux/fs.h>
  #include <linux/pci.h>
  #include <linux/firmware.h>
  #include <asm/uaccess.h>
  #include <asm/fcntl.h>
  
  #include "bfad_drv.h"
  #include "bfad_im.h"
  #include "bfa_fcs.h"
  #include "bfa_defs.h"
  #include "bfa.h"
  
  BFA_TRC_FILE(LDRV, BFAD);
  DEFINE_MUTEX(bfad_mutex);
  LIST_HEAD(bfad_list);
  
  static int	bfad_inst;
  static int      num_sgpgs_parm;
  int		supported_fc4s;
  char		*host_name, *os_name, *os_patch;
  int		num_rports, num_ios, num_tms;
  int		num_fcxps, num_ufbufs;
  int		reqq_size, rspq_size, num_sgpgs;
  int		rport_del_timeout = BFA_FCS_RPORT_DEF_DEL_TIMEOUT;
  int		bfa_lun_queue_depth = BFAD_LUN_QUEUE_DEPTH;
  int		bfa_io_max_sge = BFAD_IO_MAX_SGE;
  int		bfa_log_level = 3; /* WARNING log level */
  int		ioc_auto_recover = BFA_TRUE;
  int		bfa_linkup_delay = -1;
  int		fdmi_enable = BFA_TRUE;
  int		pcie_max_read_reqsz;
  int		bfa_debugfs_enable = 1;
  int		msix_disable_cb = 0, msix_disable_ct = 0;
  int		max_xfer_size = BFAD_MAX_SECTORS >> 1;
  int		max_rport_logins = BFA_FCS_MAX_RPORT_LOGINS;
  
  /* Firmware releated */
  u32	bfi_image_cb_size, bfi_image_ct_size, bfi_image_ct2_size;
  u32	*bfi_image_cb, *bfi_image_ct, *bfi_image_ct2;
  
  #define BFAD_FW_FILE_CB		"cbfw-3.2.3.0.bin"
  #define BFAD_FW_FILE_CT		"ctfw-3.2.3.0.bin"
  #define BFAD_FW_FILE_CT2	"ct2fw-3.2.3.0.bin"
  
  static u32 *bfad_load_fwimg(struct pci_dev *pdev);
  static void bfad_free_fwimg(void);
  static void bfad_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
  		u32 *bfi_image_size, char *fw_name);
  
  static const char *msix_name_ct[] = {
  	"ctrl",
  	"cpe0", "cpe1", "cpe2", "cpe3",
  	"rme0", "rme1", "rme2", "rme3" };
  
  static const char *msix_name_cb[] = {
  	"cpe0", "cpe1", "cpe2", "cpe3",
  	"rme0", "rme1", "rme2", "rme3",
  	"eemc", "elpu0", "elpu1", "epss", "mlpu" };
  
  MODULE_FIRMWARE(BFAD_FW_FILE_CB);
  MODULE_FIRMWARE(BFAD_FW_FILE_CT);
  MODULE_FIRMWARE(BFAD_FW_FILE_CT2);
  
  module_param(os_name, charp, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(os_name, "OS name of the hba host machine");
  module_param(os_patch, charp, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(os_patch, "OS patch level of the hba host machine");
  module_param(host_name, charp, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(host_name, "Hostname of the hba host machine");
  module_param(num_rports, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(num_rports, "Max number of rports supported per port "
  				"(physical/logical), default=1024");
  module_param(num_ios, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(num_ios, "Max number of ioim requests, default=2000");
  module_param(num_tms, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(num_tms, "Max number of task im requests, default=128");
  module_param(num_fcxps, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(num_fcxps, "Max number of fcxp requests, default=64");
  module_param(num_ufbufs, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(num_ufbufs, "Max number of unsolicited frame "
  				"buffers, default=64");
  module_param(reqq_size, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(reqq_size, "Max number of request queue elements, "
  				"default=256");
  module_param(rspq_size, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(rspq_size, "Max number of response queue elements, "
  				"default=64");
  module_param(num_sgpgs, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(num_sgpgs, "Number of scatter/gather pages, default=2048");
  module_param(rport_del_timeout, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(rport_del_timeout, "Rport delete timeout, default=90 secs, "
  					"Range[>0]");
  module_param(bfa_lun_queue_depth, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(bfa_lun_queue_depth, "Lun queue depth, default=32, Range[>0]");
  module_param(bfa_io_max_sge, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(bfa_io_max_sge, "Max io scatter/gather elements, default=255");
  module_param(bfa_log_level, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(bfa_log_level, "Driver log level, default=3, "
  				"Range[Critical:1|Error:2|Warning:3|Info:4]");
  module_param(ioc_auto_recover, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(ioc_auto_recover, "IOC auto recovery, default=1, "
  				"Range[off:0|on:1]");
  module_param(bfa_linkup_delay, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(bfa_linkup_delay, "Link up delay, default=30 secs for "
  			"boot port. Otherwise 10 secs in RHEL4 & 0 for "
  			"[RHEL5, SLES10, ESX40] Range[>0]");
  module_param(msix_disable_cb, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(msix_disable_cb, "Disable Message Signaled Interrupts "
  			"for Brocade-415/425/815/825 cards, default=0, "
  			" Range[false:0|true:1]");
  module_param(msix_disable_ct, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(msix_disable_ct, "Disable Message Signaled Interrupts "
  			"if possible for Brocade-1010/1020/804/1007/902/1741 "
  			"cards, default=0, Range[false:0|true:1]");
  module_param(fdmi_enable, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(fdmi_enable, "Enables fdmi registration, default=1, "
  				"Range[false:0|true:1]");
  module_param(pcie_max_read_reqsz, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(pcie_max_read_reqsz, "PCIe max read request size, default=0 "
  		"(use system setting), Range[128|256|512|1024|2048|4096]");
  module_param(bfa_debugfs_enable, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(bfa_debugfs_enable, "Enables debugfs feature, default=1,"
  		" Range[false:0|true:1]");
  module_param(max_xfer_size, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(max_xfer_size, "default=32MB,"
  		" Range[64k|128k|256k|512k|1024k|2048k]");
  module_param(max_rport_logins, int, S_IRUGO | S_IWUSR);
  MODULE_PARM_DESC(max_rport_logins, "Max number of logins to initiator and target rports on a port (physical/logical), default=1024");
  
  static void
  bfad_sm_uninit(struct bfad_s *bfad, enum bfad_sm_event event);
  static void
  bfad_sm_created(struct bfad_s *bfad, enum bfad_sm_event event);
  static void
  bfad_sm_initializing(struct bfad_s *bfad, enum bfad_sm_event event);
  static void
  bfad_sm_operational(struct bfad_s *bfad, enum bfad_sm_event event);
  static void
  bfad_sm_stopping(struct bfad_s *bfad, enum bfad_sm_event event);
  static void
  bfad_sm_failed(struct bfad_s *bfad, enum bfad_sm_event event);
  static void
  bfad_sm_fcs_exit(struct bfad_s *bfad, enum bfad_sm_event event);
  
  /*
   * Beginning state for the driver instance, awaiting the pci_probe event
   */
  static void
  bfad_sm_uninit(struct bfad_s *bfad, enum bfad_sm_event event)
  {
  	bfa_trc(bfad, event);
  
  	switch (event) {
  	case BFAD_E_CREATE:
  		bfa_sm_set_state(bfad, bfad_sm_created);
  		bfad->bfad_tsk = kthread_create(bfad_worker, (void *) bfad,
  						"%s", "bfad_worker");
  		if (IS_ERR(bfad->bfad_tsk)) {
  			printk(KERN_INFO "bfad[%d]: Kernel thread "
  				"creation failed!
  ", bfad->inst_no);
  			bfa_sm_send_event(bfad, BFAD_E_KTHREAD_CREATE_FAILED);
  		}
  		bfa_sm_send_event(bfad, BFAD_E_INIT);
  		break;
  
  	case BFAD_E_STOP:
  		/* Ignore stop; already in uninit */
  		break;
  
  	default:
  		bfa_sm_fault(bfad, event);
  	}
  }
  
  /*
   * Driver Instance is created, awaiting event INIT to initialize the bfad
   */
  static void
  bfad_sm_created(struct bfad_s *bfad, enum bfad_sm_event event)
  {
  	unsigned long flags;
  	bfa_status_t ret;
  
  	bfa_trc(bfad, event);
  
  	switch (event) {
  	case BFAD_E_INIT:
  		bfa_sm_set_state(bfad, bfad_sm_initializing);
  
  		init_completion(&bfad->comp);
  
  		/* Enable Interrupt and wait bfa_init completion */
  		if (bfad_setup_intr(bfad)) {
  			printk(KERN_WARNING "bfad%d: bfad_setup_intr failed
  ",
  					bfad->inst_no);
  			bfa_sm_send_event(bfad, BFAD_E_INIT_FAILED);
  			break;
  		}
  
  		spin_lock_irqsave(&bfad->bfad_lock, flags);
  		bfa_iocfc_init(&bfad->bfa);
  		spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  
  		/* Set up interrupt handler for each vectors */
  		if ((bfad->bfad_flags & BFAD_MSIX_ON) &&
  			bfad_install_msix_handler(bfad)) {
  			printk(KERN_WARNING "%s: install_msix failed, bfad%d
  ",
  				__func__, bfad->inst_no);
  		}
  
  		bfad_init_timer(bfad);
  
  		wait_for_completion(&bfad->comp);
  
  		if ((bfad->bfad_flags & BFAD_HAL_INIT_DONE)) {
  			bfa_sm_send_event(bfad, BFAD_E_INIT_SUCCESS);
  		} else {
  			printk(KERN_WARNING
  				"bfa %s: bfa init failed
  ",
  				bfad->pci_name);
  			spin_lock_irqsave(&bfad->bfad_lock, flags);
  			bfa_fcs_init(&bfad->bfa_fcs);
  			spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  
  			ret = bfad_cfg_pport(bfad, BFA_LPORT_ROLE_FCP_IM);
  			if (ret != BFA_STATUS_OK) {
  				init_completion(&bfad->comp);
  
  				spin_lock_irqsave(&bfad->bfad_lock, flags);
  				bfad->pport.flags |= BFAD_PORT_DELETE;
  				bfa_fcs_exit(&bfad->bfa_fcs);
  				spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  
  				wait_for_completion(&bfad->comp);
  
  				bfa_sm_send_event(bfad, BFAD_E_INIT_FAILED);
  				break;
  			}
  			bfad->bfad_flags |= BFAD_HAL_INIT_FAIL;
  			bfa_sm_send_event(bfad, BFAD_E_HAL_INIT_FAILED);
  		}
  
  		break;
  
  	case BFAD_E_KTHREAD_CREATE_FAILED:
  		bfa_sm_set_state(bfad, bfad_sm_uninit);
  		break;
  
  	default:
  		bfa_sm_fault(bfad, event);
  	}
  }
  
  static void
  bfad_sm_initializing(struct bfad_s *bfad, enum bfad_sm_event event)
  {
  	int	retval;
  	unsigned long	flags;
  
  	bfa_trc(bfad, event);
  
  	switch (event) {
  	case BFAD_E_INIT_SUCCESS:
  		kthread_stop(bfad->bfad_tsk);
  		spin_lock_irqsave(&bfad->bfad_lock, flags);
  		bfad->bfad_tsk = NULL;
  		spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  
  		retval = bfad_start_ops(bfad);
  		if (retval != BFA_STATUS_OK) {
  			bfa_sm_set_state(bfad, bfad_sm_failed);
  			break;
  		}
  		bfa_sm_set_state(bfad, bfad_sm_operational);
  		break;
  
  	case BFAD_E_INIT_FAILED:
  		bfa_sm_set_state(bfad, bfad_sm_uninit);
  		kthread_stop(bfad->bfad_tsk);
  		spin_lock_irqsave(&bfad->bfad_lock, flags);
  		bfad->bfad_tsk = NULL;
  		spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  		break;
  
  	case BFAD_E_HAL_INIT_FAILED:
  		bfa_sm_set_state(bfad, bfad_sm_failed);
  		break;
  	default:
  		bfa_sm_fault(bfad, event);
  	}
  }
  
  static void
  bfad_sm_failed(struct bfad_s *bfad, enum bfad_sm_event event)
  {
  	int	retval;
  
  	bfa_trc(bfad, event);
  
  	switch (event) {
  	case BFAD_E_INIT_SUCCESS:
  		retval = bfad_start_ops(bfad);
  		if (retval != BFA_STATUS_OK)
  			break;
  		bfa_sm_set_state(bfad, bfad_sm_operational);
  		break;
  
  	case BFAD_E_STOP:
  		bfa_sm_set_state(bfad, bfad_sm_fcs_exit);
  		bfa_sm_send_event(bfad, BFAD_E_FCS_EXIT_COMP);
  		break;
  
  	case BFAD_E_EXIT_COMP:
  		bfa_sm_set_state(bfad, bfad_sm_uninit);
  		bfad_remove_intr(bfad);
  		del_timer_sync(&bfad->hal_tmo);
  		break;
  
  	default:
  		bfa_sm_fault(bfad, event);
  	}
  }
  
  static void
  bfad_sm_operational(struct bfad_s *bfad, enum bfad_sm_event event)
  {
  	bfa_trc(bfad, event);
  
  	switch (event) {
  	case BFAD_E_STOP:
  		bfa_sm_set_state(bfad, bfad_sm_fcs_exit);
  		bfad_fcs_stop(bfad);
  		break;
  
  	default:
  		bfa_sm_fault(bfad, event);
  	}
  }
  
  static void
  bfad_sm_fcs_exit(struct bfad_s *bfad, enum bfad_sm_event event)
  {
  	bfa_trc(bfad, event);
  
  	switch (event) {
  	case BFAD_E_FCS_EXIT_COMP:
  		bfa_sm_set_state(bfad, bfad_sm_stopping);
  		bfad_stop(bfad);
  		break;
  
  	default:
  		bfa_sm_fault(bfad, event);
  	}
  }
  
  static void
  bfad_sm_stopping(struct bfad_s *bfad, enum bfad_sm_event event)
  {
  	bfa_trc(bfad, event);
  
  	switch (event) {
  	case BFAD_E_EXIT_COMP:
  		bfa_sm_set_state(bfad, bfad_sm_uninit);
  		bfad_remove_intr(bfad);
  		del_timer_sync(&bfad->hal_tmo);
  		bfad_im_probe_undo(bfad);
  		bfad->bfad_flags &= ~BFAD_FC4_PROBE_DONE;
  		bfad_uncfg_pport(bfad);
  		break;
  
  	default:
  		bfa_sm_fault(bfad, event);
  		break;
  	}
  }
  
  /*
   *  BFA callbacks
   */
  void
  bfad_hcb_comp(void *arg, bfa_status_t status)
  {
  	struct bfad_hal_comp *fcomp = (struct bfad_hal_comp *)arg;
  
  	fcomp->status = status;
  	complete(&fcomp->comp);
  }
  
  /*
   * bfa_init callback
   */
  void
  bfa_cb_init(void *drv, bfa_status_t init_status)
  {
  	struct bfad_s	      *bfad = drv;
  
  	if (init_status == BFA_STATUS_OK) {
  		bfad->bfad_flags |= BFAD_HAL_INIT_DONE;
  
  		/*
  		 * If BFAD_HAL_INIT_FAIL flag is set:
  		 * Wake up the kernel thread to start
  		 * the bfad operations after HAL init done
  		 */
  		if ((bfad->bfad_flags & BFAD_HAL_INIT_FAIL)) {
  			bfad->bfad_flags &= ~BFAD_HAL_INIT_FAIL;
  			wake_up_process(bfad->bfad_tsk);
  		}
  	}
  
  	complete(&bfad->comp);
  }
  
  /*
   *  BFA_FCS callbacks
   */
  struct bfad_port_s *
  bfa_fcb_lport_new(struct bfad_s *bfad, struct bfa_fcs_lport_s *port,
  		 enum bfa_lport_role roles, struct bfad_vf_s *vf_drv,
  		 struct bfad_vport_s *vp_drv)
  {
  	bfa_status_t	rc;
  	struct bfad_port_s    *port_drv;
  
  	if (!vp_drv && !vf_drv) {
  		port_drv = &bfad->pport;
  		port_drv->pvb_type = BFAD_PORT_PHYS_BASE;
  	} else if (!vp_drv && vf_drv) {
  		port_drv = &vf_drv->base_port;
  		port_drv->pvb_type = BFAD_PORT_VF_BASE;
  	} else if (vp_drv && !vf_drv) {
  		port_drv = &vp_drv->drv_port;
  		port_drv->pvb_type = BFAD_PORT_PHYS_VPORT;
  	} else {
  		port_drv = &vp_drv->drv_port;
  		port_drv->pvb_type = BFAD_PORT_VF_VPORT;
  	}
  
  	port_drv->fcs_port = port;
  	port_drv->roles = roles;
  
  	if (roles & BFA_LPORT_ROLE_FCP_IM) {
  		rc = bfad_im_port_new(bfad, port_drv);
  		if (rc != BFA_STATUS_OK) {
  			bfad_im_port_delete(bfad, port_drv);
  			port_drv = NULL;
  		}
  	}
  
  	return port_drv;
  }
  
  /*
   * FCS RPORT alloc callback, after successful PLOGI by FCS
   */
  bfa_status_t
  bfa_fcb_rport_alloc(struct bfad_s *bfad, struct bfa_fcs_rport_s **rport,
  		    struct bfad_rport_s **rport_drv)
  {
  	bfa_status_t	rc = BFA_STATUS_OK;
  
  	*rport_drv = kzalloc(sizeof(struct bfad_rport_s), GFP_ATOMIC);
  	if (*rport_drv == NULL) {
  		rc = BFA_STATUS_ENOMEM;
  		goto ext;
  	}
  
  	*rport = &(*rport_drv)->fcs_rport;
  
  ext:
  	return rc;
  }
  
  /*
   * FCS PBC VPORT Create
   */
  void
  bfa_fcb_pbc_vport_create(struct bfad_s *bfad, struct bfi_pbc_vport_s pbc_vport)
  {
  
  	struct bfa_lport_cfg_s port_cfg = {0};
  	struct bfad_vport_s   *vport;
  	int rc;
  
  	vport = kzalloc(sizeof(struct bfad_vport_s), GFP_KERNEL);
  	if (!vport) {
  		bfa_trc(bfad, 0);
  		return;
  	}
  
  	vport->drv_port.bfad = bfad;
  	port_cfg.roles = BFA_LPORT_ROLE_FCP_IM;
  	port_cfg.pwwn = pbc_vport.vp_pwwn;
  	port_cfg.nwwn = pbc_vport.vp_nwwn;
  	port_cfg.preboot_vp  = BFA_TRUE;
  
  	rc = bfa_fcs_pbc_vport_create(&vport->fcs_vport, &bfad->bfa_fcs, 0,
  				  &port_cfg, vport);
  
  	if (rc != BFA_STATUS_OK) {
  		bfa_trc(bfad, 0);
  		return;
  	}
  
  	list_add_tail(&vport->list_entry, &bfad->pbc_vport_list);
  }
  
  void
  bfad_hal_mem_release(struct bfad_s *bfad)
  {
  	struct bfa_meminfo_s *hal_meminfo = &bfad->meminfo;
  	struct bfa_mem_dma_s *dma_info, *dma_elem;
  	struct bfa_mem_kva_s *kva_info, *kva_elem;
  	struct list_head *dm_qe, *km_qe;
  
  	dma_info = &hal_meminfo->dma_info;
  	kva_info = &hal_meminfo->kva_info;
  
  	/* Iterate through the KVA meminfo queue */
  	list_for_each(km_qe, &kva_info->qe) {
  		kva_elem = (struct bfa_mem_kva_s *) km_qe;
  		vfree(kva_elem->kva);
  	}
  
  	/* Iterate through the DMA meminfo queue */
  	list_for_each(dm_qe, &dma_info->qe) {
  		dma_elem = (struct bfa_mem_dma_s *) dm_qe;
  		dma_free_coherent(&bfad->pcidev->dev,
  				dma_elem->mem_len, dma_elem->kva,
  				(dma_addr_t) dma_elem->dma);
  	}
  
  	memset(hal_meminfo, 0, sizeof(struct bfa_meminfo_s));
  }
  
  void
  bfad_update_hal_cfg(struct bfa_iocfc_cfg_s *bfa_cfg)
  {
  	if (num_rports > 0)
  		bfa_cfg->fwcfg.num_rports = num_rports;
  	if (num_ios > 0)
  		bfa_cfg->fwcfg.num_ioim_reqs = num_ios;
  	if (num_tms > 0)
  		bfa_cfg->fwcfg.num_tskim_reqs = num_tms;
  	if (num_fcxps > 0 && num_fcxps <= BFA_FCXP_MAX)
  		bfa_cfg->fwcfg.num_fcxp_reqs = num_fcxps;
  	if (num_ufbufs > 0 && num_ufbufs <= BFA_UF_MAX)
  		bfa_cfg->fwcfg.num_uf_bufs = num_ufbufs;
  	if (reqq_size > 0)
  		bfa_cfg->drvcfg.num_reqq_elems = reqq_size;
  	if (rspq_size > 0)
  		bfa_cfg->drvcfg.num_rspq_elems = rspq_size;
  	if (num_sgpgs > 0 && num_sgpgs <= BFA_SGPG_MAX)
  		bfa_cfg->drvcfg.num_sgpgs = num_sgpgs;
  
  	/*
  	 * populate the hal values back to the driver for sysfs use.
  	 * otherwise, the default values will be shown as 0 in sysfs
  	 */
  	num_rports = bfa_cfg->fwcfg.num_rports;
  	num_ios = bfa_cfg->fwcfg.num_ioim_reqs;
  	num_tms = bfa_cfg->fwcfg.num_tskim_reqs;
  	num_fcxps = bfa_cfg->fwcfg.num_fcxp_reqs;
  	num_ufbufs = bfa_cfg->fwcfg.num_uf_bufs;
  	reqq_size = bfa_cfg->drvcfg.num_reqq_elems;
  	rspq_size = bfa_cfg->drvcfg.num_rspq_elems;
  	num_sgpgs = bfa_cfg->drvcfg.num_sgpgs;
  }
  
  bfa_status_t
  bfad_hal_mem_alloc(struct bfad_s *bfad)
  {
  	struct bfa_meminfo_s *hal_meminfo = &bfad->meminfo;
  	struct bfa_mem_dma_s *dma_info, *dma_elem;
  	struct bfa_mem_kva_s *kva_info, *kva_elem;
  	struct list_head *dm_qe, *km_qe;
  	bfa_status_t	rc = BFA_STATUS_OK;
  	dma_addr_t	phys_addr;
  
  	bfa_cfg_get_default(&bfad->ioc_cfg);
  	bfad_update_hal_cfg(&bfad->ioc_cfg);
  	bfad->cfg_data.ioc_queue_depth = bfad->ioc_cfg.fwcfg.num_ioim_reqs;
  	bfa_cfg_get_meminfo(&bfad->ioc_cfg, hal_meminfo, &bfad->bfa);
  
  	dma_info = &hal_meminfo->dma_info;
  	kva_info = &hal_meminfo->kva_info;
  
  	/* Iterate through the KVA meminfo queue */
  	list_for_each(km_qe, &kva_info->qe) {
  		kva_elem = (struct bfa_mem_kva_s *) km_qe;
  		kva_elem->kva = vmalloc(kva_elem->mem_len);
  		if (kva_elem->kva == NULL) {
  			bfad_hal_mem_release(bfad);
  			rc = BFA_STATUS_ENOMEM;
  			goto ext;
  		}
  		memset(kva_elem->kva, 0, kva_elem->mem_len);
  	}
  
  	/* Iterate through the DMA meminfo queue */
  	list_for_each(dm_qe, &dma_info->qe) {
  		dma_elem = (struct bfa_mem_dma_s *) dm_qe;
  		dma_elem->kva = dma_alloc_coherent(&bfad->pcidev->dev,
  						dma_elem->mem_len,
  						&phys_addr, GFP_KERNEL);
  		if (dma_elem->kva == NULL) {
  			bfad_hal_mem_release(bfad);
  			rc = BFA_STATUS_ENOMEM;
  			goto ext;
  		}
  		dma_elem->dma = phys_addr;
  		memset(dma_elem->kva, 0, dma_elem->mem_len);
  	}
  ext:
  	return rc;
  }
  
  /*
   * Create a vport under a vf.
   */
  bfa_status_t
  bfad_vport_create(struct bfad_s *bfad, u16 vf_id,
  		  struct bfa_lport_cfg_s *port_cfg, struct device *dev)
  {
  	struct bfad_vport_s   *vport;
  	int		rc = BFA_STATUS_OK;
  	unsigned long	flags;
  	struct completion fcomp;
  
  	vport = kzalloc(sizeof(struct bfad_vport_s), GFP_KERNEL);
  	if (!vport) {
  		rc = BFA_STATUS_ENOMEM;
  		goto ext;
  	}
  
  	vport->drv_port.bfad = bfad;
  	spin_lock_irqsave(&bfad->bfad_lock, flags);
  	rc = bfa_fcs_vport_create(&vport->fcs_vport, &bfad->bfa_fcs, vf_id,
  				  port_cfg, vport);
  	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  
  	if (rc != BFA_STATUS_OK)
  		goto ext_free_vport;
  
  	if (port_cfg->roles & BFA_LPORT_ROLE_FCP_IM) {
  		rc = bfad_im_scsi_host_alloc(bfad, vport->drv_port.im_port,
  							dev);
  		if (rc != BFA_STATUS_OK)
  			goto ext_free_fcs_vport;
  	}
  
  	spin_lock_irqsave(&bfad->bfad_lock, flags);
  	bfa_fcs_vport_start(&vport->fcs_vport);
  	list_add_tail(&vport->list_entry, &bfad->vport_list);
  	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  
  	return BFA_STATUS_OK;
  
  ext_free_fcs_vport:
  	spin_lock_irqsave(&bfad->bfad_lock, flags);
  	vport->comp_del = &fcomp;
  	init_completion(vport->comp_del);
  	bfa_fcs_vport_delete(&vport->fcs_vport);
  	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  	wait_for_completion(vport->comp_del);
  ext_free_vport:
  	kfree(vport);
  ext:
  	return rc;
  }
  
  void
  bfad_bfa_tmo(unsigned long data)
  {
  	struct bfad_s	      *bfad = (struct bfad_s *) data;
  	unsigned long	flags;
  	struct list_head	       doneq;
  
  	spin_lock_irqsave(&bfad->bfad_lock, flags);
  
  	bfa_timer_beat(&bfad->bfa.timer_mod);
  
  	bfa_comp_deq(&bfad->bfa, &doneq);
  	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  
  	if (!list_empty(&doneq)) {
  		bfa_comp_process(&bfad->bfa, &doneq);
  		spin_lock_irqsave(&bfad->bfad_lock, flags);
  		bfa_comp_free(&bfad->bfa, &doneq);
  		spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  	}
  
  	mod_timer(&bfad->hal_tmo,
  		  jiffies + msecs_to_jiffies(BFA_TIMER_FREQ));
  }
  
  void
  bfad_init_timer(struct bfad_s *bfad)
  {
  	init_timer(&bfad->hal_tmo);
  	bfad->hal_tmo.function = bfad_bfa_tmo;
  	bfad->hal_tmo.data = (unsigned long)bfad;
  
  	mod_timer(&bfad->hal_tmo,
  		  jiffies + msecs_to_jiffies(BFA_TIMER_FREQ));
  }
  
  int
  bfad_pci_init(struct pci_dev *pdev, struct bfad_s *bfad)
  {
  	int		rc = -ENODEV;
  
  	if (pci_enable_device(pdev)) {
  		printk(KERN_ERR "pci_enable_device fail %p
  ", pdev);
  		goto out;
  	}
  
  	if (pci_request_regions(pdev, BFAD_DRIVER_NAME))
  		goto out_disable_device;
  
  	pci_set_master(pdev);
  
  
  	if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) ||
  	    (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0)) {
  		if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) ||
  		   (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)) {
  			printk(KERN_ERR "pci_set_dma_mask fail %p
  ", pdev);
  			goto out_release_region;
  		}
  	}
  
  	/* Enable PCIE Advanced Error Recovery (AER) if kernel supports */
  	pci_enable_pcie_error_reporting(pdev);
  
  	bfad->pci_bar0_kva = pci_iomap(pdev, 0, pci_resource_len(pdev, 0));
  	bfad->pci_bar2_kva = pci_iomap(pdev, 2, pci_resource_len(pdev, 2));
  
  	if (bfad->pci_bar0_kva == NULL) {
  		printk(KERN_ERR "Fail to map bar0
  ");
  		goto out_release_region;
  	}
  
  	bfad->hal_pcidev.pci_slot = PCI_SLOT(pdev->devfn);
  	bfad->hal_pcidev.pci_func = PCI_FUNC(pdev->devfn);
  	bfad->hal_pcidev.pci_bar_kva = bfad->pci_bar0_kva;
  	bfad->hal_pcidev.device_id = pdev->device;
  	bfad->hal_pcidev.ssid = pdev->subsystem_device;
  	bfad->pci_name = pci_name(pdev);
  
  	bfad->pci_attr.vendor_id = pdev->vendor;
  	bfad->pci_attr.device_id = pdev->device;
  	bfad->pci_attr.ssid = pdev->subsystem_device;
  	bfad->pci_attr.ssvid = pdev->subsystem_vendor;
  	bfad->pci_attr.pcifn = PCI_FUNC(pdev->devfn);
  
  	bfad->pcidev = pdev;
  
  	/* Adjust PCIe Maximum Read Request Size */
  	if (pci_is_pcie(pdev) && pcie_max_read_reqsz) {
  		if (pcie_max_read_reqsz >= 128 &&
  		    pcie_max_read_reqsz <= 4096 &&
  		    is_power_of_2(pcie_max_read_reqsz)) {
  			int max_rq = pcie_get_readrq(pdev);
  			printk(KERN_WARNING "BFA[%s]: "
  				"pcie_max_read_request_size is %d, "
  				"reset to %d
  ", bfad->pci_name, max_rq,
  				pcie_max_read_reqsz);
  			pcie_set_readrq(pdev, pcie_max_read_reqsz);
  		} else {
  			printk(KERN_WARNING "BFA[%s]: invalid "
  			       "pcie_max_read_request_size %d ignored
  ",
  			       bfad->pci_name, pcie_max_read_reqsz);
  		}
  	}
  
  	pci_save_state(pdev);
  
  	return 0;
  
  out_release_region:
  	pci_release_regions(pdev);
  out_disable_device:
  	pci_disable_device(pdev);
  out:
  	return rc;
  }
  
  void
  bfad_pci_uninit(struct pci_dev *pdev, struct bfad_s *bfad)
  {
  	pci_iounmap(pdev, bfad->pci_bar0_kva);
  	pci_iounmap(pdev, bfad->pci_bar2_kva);
  	pci_release_regions(pdev);
  	/* Disable PCIE Advanced Error Recovery (AER) */
  	pci_disable_pcie_error_reporting(pdev);
  	pci_disable_device(pdev);
  }
  
  bfa_status_t
  bfad_drv_init(struct bfad_s *bfad)
  {
  	bfa_status_t	rc;
  	unsigned long	flags;
  
  	bfad->cfg_data.rport_del_timeout = rport_del_timeout;
  	bfad->cfg_data.lun_queue_depth = bfa_lun_queue_depth;
  	bfad->cfg_data.io_max_sge = bfa_io_max_sge;
  	bfad->cfg_data.binding_method = FCP_PWWN_BINDING;
  
  	rc = bfad_hal_mem_alloc(bfad);
  	if (rc != BFA_STATUS_OK) {
  		printk(KERN_WARNING "bfad%d bfad_hal_mem_alloc failure
  ",
  		       bfad->inst_no);
  		printk(KERN_WARNING
  			"Not enough memory to attach all Brocade HBA ports, %s",
  			"System may need more memory.
  ");
  		return BFA_STATUS_FAILED;
  	}
  
  	bfad->bfa.trcmod = bfad->trcmod;
  	bfad->bfa.plog = &bfad->plog_buf;
  	bfa_plog_init(&bfad->plog_buf);
  	bfa_plog_str(&bfad->plog_buf, BFA_PL_MID_DRVR, BFA_PL_EID_DRIVER_START,
  		     0, "Driver Attach");
  
  	bfa_attach(&bfad->bfa, bfad, &bfad->ioc_cfg, &bfad->meminfo,
  		   &bfad->hal_pcidev);
  
  	/* FCS INIT */
  	spin_lock_irqsave(&bfad->bfad_lock, flags);
  	bfad->bfa_fcs.trcmod = bfad->trcmod;
  	bfa_fcs_attach(&bfad->bfa_fcs, &bfad->bfa, bfad, BFA_FALSE);
  	bfad->bfa_fcs.fdmi_enabled = fdmi_enable;
  	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  
  	bfad->bfad_flags |= BFAD_DRV_INIT_DONE;
  
  	return BFA_STATUS_OK;
  }
  
  void
  bfad_drv_uninit(struct bfad_s *bfad)
  {
  	unsigned long   flags;
  
  	spin_lock_irqsave(&bfad->bfad_lock, flags);
  	init_completion(&bfad->comp);
  	bfa_iocfc_stop(&bfad->bfa);
  	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  	wait_for_completion(&bfad->comp);
  
  	del_timer_sync(&bfad->hal_tmo);
  	bfa_isr_disable(&bfad->bfa);
  	bfa_detach(&bfad->bfa);
  	bfad_remove_intr(bfad);
  	bfad_hal_mem_release(bfad);
  
  	bfad->bfad_flags &= ~BFAD_DRV_INIT_DONE;
  }
  
  void
  bfad_drv_start(struct bfad_s *bfad)
  {
  	unsigned long	flags;
  
  	spin_lock_irqsave(&bfad->bfad_lock, flags);
  	bfa_iocfc_start(&bfad->bfa);
  	bfa_fcs_pbc_vport_init(&bfad->bfa_fcs);
  	bfa_fcs_fabric_modstart(&bfad->bfa_fcs);
  	bfad->bfad_flags |= BFAD_HAL_START_DONE;
  	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  
  	if (bfad->im)
  		flush_workqueue(bfad->im->drv_workq);
  }
  
  void
  bfad_fcs_stop(struct bfad_s *bfad)
  {
  	unsigned long	flags;
  
  	spin_lock_irqsave(&bfad->bfad_lock, flags);
  	init_completion(&bfad->comp);
  	bfad->pport.flags |= BFAD_PORT_DELETE;
  	bfa_fcs_exit(&bfad->bfa_fcs);
  	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  	wait_for_completion(&bfad->comp);
  
  	bfa_sm_send_event(bfad, BFAD_E_FCS_EXIT_COMP);
  }
  
  void
  bfad_stop(struct bfad_s *bfad)
  {
  	unsigned long	flags;
  
  	spin_lock_irqsave(&bfad->bfad_lock, flags);
  	init_completion(&bfad->comp);
  	bfa_iocfc_stop(&bfad->bfa);
  	bfad->bfad_flags &= ~BFAD_HAL_START_DONE;
  	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  	wait_for_completion(&bfad->comp);
  
  	bfa_sm_send_event(bfad, BFAD_E_EXIT_COMP);
  }
  
  bfa_status_t
  bfad_cfg_pport(struct bfad_s *bfad, enum bfa_lport_role role)
  {
  	int		rc = BFA_STATUS_OK;
  
  	/* Allocate scsi_host for the physical port */
  	if ((supported_fc4s & BFA_LPORT_ROLE_FCP_IM) &&
  	    (role & BFA_LPORT_ROLE_FCP_IM)) {
  		if (bfad->pport.im_port == NULL) {
  			rc = BFA_STATUS_FAILED;
  			goto out;
  		}
  
  		rc = bfad_im_scsi_host_alloc(bfad, bfad->pport.im_port,
  						&bfad->pcidev->dev);
  		if (rc != BFA_STATUS_OK)
  			goto out;
  
  		bfad->pport.roles |= BFA_LPORT_ROLE_FCP_IM;
  	}
  
  	bfad->bfad_flags |= BFAD_CFG_PPORT_DONE;
  
  out:
  	return rc;
  }
  
  void
  bfad_uncfg_pport(struct bfad_s *bfad)
  {
  	if ((supported_fc4s & BFA_LPORT_ROLE_FCP_IM) &&
  	    (bfad->pport.roles & BFA_LPORT_ROLE_FCP_IM)) {
  		bfad_im_scsi_host_free(bfad, bfad->pport.im_port);
  		bfad_im_port_clean(bfad->pport.im_port);
  		kfree(bfad->pport.im_port);
  		bfad->pport.roles &= ~BFA_LPORT_ROLE_FCP_IM;
  	}
  
  	bfad->bfad_flags &= ~BFAD_CFG_PPORT_DONE;
  }
  
  bfa_status_t
  bfad_start_ops(struct bfad_s *bfad) {
  
  	int	retval;
  	unsigned long	flags;
  	struct bfad_vport_s *vport, *vport_new;
  	struct bfa_fcs_driver_info_s driver_info;
  
  	/* Limit min/max. xfer size to [64k-32MB] */
  	if (max_xfer_size < BFAD_MIN_SECTORS >> 1)
  		max_xfer_size = BFAD_MIN_SECTORS >> 1;
  	if (max_xfer_size > BFAD_MAX_SECTORS >> 1)
  		max_xfer_size = BFAD_MAX_SECTORS >> 1;
  
  	/* Fill the driver_info info to fcs*/
  	memset(&driver_info, 0, sizeof(driver_info));
  	strncpy(driver_info.version, BFAD_DRIVER_VERSION,
  		sizeof(driver_info.version) - 1);
  	if (host_name)
  		strncpy(driver_info.host_machine_name, host_name,
  			sizeof(driver_info.host_machine_name) - 1);
  	if (os_name)
  		strncpy(driver_info.host_os_name, os_name,
  			sizeof(driver_info.host_os_name) - 1);
  	if (os_patch)
  		strncpy(driver_info.host_os_patch, os_patch,
  			sizeof(driver_info.host_os_patch) - 1);
  
  	strncpy(driver_info.os_device_name, bfad->pci_name,
  		sizeof(driver_info.os_device_name) - 1);
  
  	/* FCS driver info init */
  	spin_lock_irqsave(&bfad->bfad_lock, flags);
  	bfa_fcs_driver_info_init(&bfad->bfa_fcs, &driver_info);
  
  	if (bfad->bfad_flags & BFAD_CFG_PPORT_DONE)
  		bfa_fcs_update_cfg(&bfad->bfa_fcs);
  	else
  		bfa_fcs_init(&bfad->bfa_fcs);
  
  	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  
  	if (!(bfad->bfad_flags & BFAD_CFG_PPORT_DONE)) {
  		retval = bfad_cfg_pport(bfad, BFA_LPORT_ROLE_FCP_IM);
  		if (retval != BFA_STATUS_OK)
  			return BFA_STATUS_FAILED;
  	}
  
  	/* Setup fc host fixed attribute if the lk supports */
  	bfad_fc_host_init(bfad->pport.im_port);
  
  	/* BFAD level FC4 IM specific resource allocation */
  	retval = bfad_im_probe(bfad);
  	if (retval != BFA_STATUS_OK) {
  		printk(KERN_WARNING "bfad_im_probe failed
  ");
  		if (bfa_sm_cmp_state(bfad, bfad_sm_initializing))
  			bfa_sm_set_state(bfad, bfad_sm_failed);
  		return BFA_STATUS_FAILED;
  	} else
  		bfad->bfad_flags |= BFAD_FC4_PROBE_DONE;
  
  	bfad_drv_start(bfad);
  
  	/* Complete pbc vport create */
  	list_for_each_entry_safe(vport, vport_new, &bfad->pbc_vport_list,
  				list_entry) {
  		struct fc_vport_identifiers vid;
  		struct fc_vport *fc_vport;
  		char pwwn_buf[BFA_STRING_32];
  
  		memset(&vid, 0, sizeof(vid));
  		vid.roles = FC_PORT_ROLE_FCP_INITIATOR;
  		vid.vport_type = FC_PORTTYPE_NPIV;
  		vid.disable = false;
  		vid.node_name = wwn_to_u64((u8 *)
  				(&((vport->fcs_vport).lport.port_cfg.nwwn)));
  		vid.port_name = wwn_to_u64((u8 *)
  				(&((vport->fcs_vport).lport.port_cfg.pwwn)));
  		fc_vport = fc_vport_create(bfad->pport.im_port->shost, 0, &vid);
  		if (!fc_vport) {
  			wwn2str(pwwn_buf, vid.port_name);
  			printk(KERN_WARNING "bfad%d: failed to create pbc vport"
  				" %s
  ", bfad->inst_no, pwwn_buf);
  		}
  		list_del(&vport->list_entry);
  		kfree(vport);
  	}
  
  	/*
  	 * If bfa_linkup_delay is set to -1 default; try to retrive the
  	 * value using the bfad_get_linkup_delay(); else use the
  	 * passed in module param value as the bfa_linkup_delay.
  	 */
  	if (bfa_linkup_delay < 0) {
  		bfa_linkup_delay = bfad_get_linkup_delay(bfad);
  		bfad_rport_online_wait(bfad);
  		bfa_linkup_delay = -1;
  	} else
  		bfad_rport_online_wait(bfad);
  
  	BFA_LOG(KERN_INFO, bfad, bfa_log_level, "bfa device claimed
  ");
  
  	return BFA_STATUS_OK;
  }
  
  int
  bfad_worker(void *ptr)
  {
  	struct bfad_s *bfad;
  	unsigned long   flags;
  
  	bfad = (struct bfad_s *)ptr;
  
  	while (!kthread_should_stop()) {
  
  		/* Send event BFAD_E_INIT_SUCCESS */
  		bfa_sm_send_event(bfad, BFAD_E_INIT_SUCCESS);
  
  		spin_lock_irqsave(&bfad->bfad_lock, flags);
  		bfad->bfad_tsk = NULL;
  		spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  
  		break;
  	}
  
  	return 0;
  }
  
  /*
   *  BFA driver interrupt functions
   */
  irqreturn_t
  bfad_intx(int irq, void *dev_id)
  {
  	struct bfad_s	*bfad = dev_id;
  	struct list_head	doneq;
  	unsigned long	flags;
  	bfa_boolean_t rc;
  
  	spin_lock_irqsave(&bfad->bfad_lock, flags);
  	rc = bfa_intx(&bfad->bfa);
  	if (!rc) {
  		spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  		return IRQ_NONE;
  	}
  
  	bfa_comp_deq(&bfad->bfa, &doneq);
  	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  
  	if (!list_empty(&doneq)) {
  		bfa_comp_process(&bfad->bfa, &doneq);
  
  		spin_lock_irqsave(&bfad->bfad_lock, flags);
  		bfa_comp_free(&bfad->bfa, &doneq);
  		spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  	}
  
  	return IRQ_HANDLED;
  
  }
  
  static irqreturn_t
  bfad_msix(int irq, void *dev_id)
  {
  	struct bfad_msix_s *vec = dev_id;
  	struct bfad_s *bfad = vec->bfad;
  	struct list_head doneq;
  	unsigned long   flags;
  
  	spin_lock_irqsave(&bfad->bfad_lock, flags);
  
  	bfa_msix(&bfad->bfa, vec->msix.entry);
  	bfa_comp_deq(&bfad->bfa, &doneq);
  	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  
  	if (!list_empty(&doneq)) {
  		bfa_comp_process(&bfad->bfa, &doneq);
  
  		spin_lock_irqsave(&bfad->bfad_lock, flags);
  		bfa_comp_free(&bfad->bfa, &doneq);
  		spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  	}
  
  	return IRQ_HANDLED;
  }
  
  /*
   * Initialize the MSIX entry table.
   */
  static void
  bfad_init_msix_entry(struct bfad_s *bfad, struct msix_entry *msix_entries,
  			 int mask, int max_bit)
  {
  	int	i;
  	int	match = 0x00000001;
  
  	for (i = 0, bfad->nvec = 0; i < MAX_MSIX_ENTRY; i++) {
  		if (mask & match) {
  			bfad->msix_tab[bfad->nvec].msix.entry = i;
  			bfad->msix_tab[bfad->nvec].bfad = bfad;
  			msix_entries[bfad->nvec].entry = i;
  			bfad->nvec++;
  		}
  
  		match <<= 1;
  	}
  
  }
  
  int
  bfad_install_msix_handler(struct bfad_s *bfad)
  {
  	int i, error = 0;
  
  	for (i = 0; i < bfad->nvec; i++) {
  		sprintf(bfad->msix_tab[i].name, "bfa-%s-%s",
  				bfad->pci_name,
  				((bfa_asic_id_cb(bfad->hal_pcidev.device_id)) ?
  				msix_name_cb[i] : msix_name_ct[i]));
  
  		error = request_irq(bfad->msix_tab[i].msix.vector,
  				    (irq_handler_t) bfad_msix, 0,
  				    bfad->msix_tab[i].name, &bfad->msix_tab[i]);
  		bfa_trc(bfad, i);
  		bfa_trc(bfad, bfad->msix_tab[i].msix.vector);
  		if (error) {
  			int	j;
  
  			for (j = 0; j < i; j++)
  				free_irq(bfad->msix_tab[j].msix.vector,
  						&bfad->msix_tab[j]);
  
  			bfad->bfad_flags &= ~BFAD_MSIX_ON;
  			pci_disable_msix(bfad->pcidev);
  
  			return 1;
  		}
  	}
  
  	return 0;
  }
  
  /*
   * Setup MSIX based interrupt.
   */
  int
  bfad_setup_intr(struct bfad_s *bfad)
  {
  	int error = 0;
  	u32 mask = 0, i, num_bit = 0, max_bit = 0;
  	struct msix_entry msix_entries[MAX_MSIX_ENTRY];
  	struct pci_dev *pdev = bfad->pcidev;
  	u16	reg;
  
  	/* Call BFA to get the msix map for this PCI function.  */
  	bfa_msix_getvecs(&bfad->bfa, &mask, &num_bit, &max_bit);
  
  	/* Set up the msix entry table */
  	bfad_init_msix_entry(bfad, msix_entries, mask, max_bit);
  
  	if ((bfa_asic_id_ctc(pdev->device) && !msix_disable_ct) ||
  	   (bfa_asic_id_cb(pdev->device) && !msix_disable_cb)) {
  
  		error = pci_enable_msix(bfad->pcidev, msix_entries, bfad->nvec);
  		if (error) {
  			/* In CT1 & CT2, try to allocate just one vector */
  			if (bfa_asic_id_ctc(pdev->device)) {
  				printk(KERN_WARNING "bfa %s: trying one msix "
  				       "vector failed to allocate %d[%d]
  ",
  				       bfad->pci_name, bfad->nvec, error);
  				bfad->nvec = 1;
  				error = pci_enable_msix(bfad->pcidev,
  						msix_entries, bfad->nvec);
  			}
  
  			/*
  			 * Only error number of vector is available.
  			 * We don't have a mechanism to map multiple
  			 * interrupts into one vector, so even if we
  			 * can try to request less vectors, we don't
  			 * know how to associate interrupt events to
  			 *  vectors. Linux doesn't duplicate vectors
  			 * in the MSIX table for this case.
  			 */
  			if (error) {
  				printk(KERN_WARNING "bfad%d: "
  				       "pci_enable_msix failed (%d), "
  				       "use line based.
  ",
  					bfad->inst_no, error);
  				goto line_based;
  			}
  		}
  
  		/* Disable INTX in MSI-X mode */
  		pci_read_config_word(pdev, PCI_COMMAND, &reg);
  
  		if (!(reg & PCI_COMMAND_INTX_DISABLE))
  			pci_write_config_word(pdev, PCI_COMMAND,
  				reg | PCI_COMMAND_INTX_DISABLE);
  
  		/* Save the vectors */
  		for (i = 0; i < bfad->nvec; i++) {
  			bfa_trc(bfad, msix_entries[i].vector);
  			bfad->msix_tab[i].msix.vector = msix_entries[i].vector;
  		}
  
  		bfa_msix_init(&bfad->bfa, bfad->nvec);
  
  		bfad->bfad_flags |= BFAD_MSIX_ON;
  
  		return error;
  	}
  
  line_based:
  	error = 0;
  	if (request_irq
  	    (bfad->pcidev->irq, (irq_handler_t) bfad_intx, BFAD_IRQ_FLAGS,
  	     BFAD_DRIVER_NAME, bfad) != 0) {
  		/* Enable interrupt handler failed */
  		return 1;
  	}
  	bfad->bfad_flags |= BFAD_INTX_ON;
  
  	return error;
  }
  
  void
  bfad_remove_intr(struct bfad_s *bfad)
  {
  	int	i;
  
  	if (bfad->bfad_flags & BFAD_MSIX_ON) {
  		for (i = 0; i < bfad->nvec; i++)
  			free_irq(bfad->msix_tab[i].msix.vector,
  					&bfad->msix_tab[i]);
  
  		pci_disable_msix(bfad->pcidev);
  		bfad->bfad_flags &= ~BFAD_MSIX_ON;
  	} else if (bfad->bfad_flags & BFAD_INTX_ON) {
  		free_irq(bfad->pcidev->irq, bfad);
  	}
  }
  
  /*
   * PCI probe entry.
   */
  int
  bfad_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pid)
  {
  	struct bfad_s	*bfad;
  	int		error = -ENODEV, retval, i;
  
  	/* For single port cards - only claim function 0 */
  	if ((pdev->device == BFA_PCI_DEVICE_ID_FC_8G1P) &&
  		(PCI_FUNC(pdev->devfn) != 0))
  		return -ENODEV;
  
  	bfad = kzalloc(sizeof(struct bfad_s), GFP_KERNEL);
  	if (!bfad) {
  		error = -ENOMEM;
  		goto out;
  	}
  
  	bfad->trcmod = kzalloc(sizeof(struct bfa_trc_mod_s), GFP_KERNEL);
  	if (!bfad->trcmod) {
  		printk(KERN_WARNING "Error alloc trace buffer!
  ");
  		error = -ENOMEM;
  		goto out_alloc_trace_failure;
  	}
  
  	/* TRACE INIT */
  	bfa_trc_init(bfad->trcmod);
  	bfa_trc(bfad, bfad_inst);
  
  	/* AEN INIT */
  	INIT_LIST_HEAD(&bfad->free_aen_q);
  	INIT_LIST_HEAD(&bfad->active_aen_q);
  	for (i = 0; i < BFA_AEN_MAX_ENTRY; i++)
  		list_add_tail(&bfad->aen_list[i].qe, &bfad->free_aen_q);
  
  	if (!(bfad_load_fwimg(pdev))) {
  		kfree(bfad->trcmod);
  		goto out_alloc_trace_failure;
  	}
  
  	retval = bfad_pci_init(pdev, bfad);
  	if (retval) {
  		printk(KERN_WARNING "bfad_pci_init failure!
  ");
  		error = retval;
  		goto out_pci_init_failure;
  	}
  
  	mutex_lock(&bfad_mutex);
  	bfad->inst_no = bfad_inst++;
  	list_add_tail(&bfad->list_entry, &bfad_list);
  	mutex_unlock(&bfad_mutex);
  
  	/* Initializing the state machine: State set to uninit */
  	bfa_sm_set_state(bfad, bfad_sm_uninit);
  
  	spin_lock_init(&bfad->bfad_lock);
  	spin_lock_init(&bfad->bfad_aen_spinlock);
  
  	pci_set_drvdata(pdev, bfad);
  
  	bfad->ref_count = 0;
  	bfad->pport.bfad = bfad;
  	INIT_LIST_HEAD(&bfad->pbc_vport_list);
  	INIT_LIST_HEAD(&bfad->vport_list);
  
  	/* Setup the debugfs node for this bfad */
  	if (bfa_debugfs_enable)
  		bfad_debugfs_init(&bfad->pport);
  
  	retval = bfad_drv_init(bfad);
  	if (retval != BFA_STATUS_OK)
  		goto out_drv_init_failure;
  
  	bfa_sm_send_event(bfad, BFAD_E_CREATE);
  
  	if (bfa_sm_cmp_state(bfad, bfad_sm_uninit))
  		goto out_bfad_sm_failure;
  
  	return 0;
  
  out_bfad_sm_failure:
  	bfad_hal_mem_release(bfad);
  out_drv_init_failure:
  	/* Remove the debugfs node for this bfad */
  	kfree(bfad->regdata);
  	bfad_debugfs_exit(&bfad->pport);
  	mutex_lock(&bfad_mutex);
  	bfad_inst--;
  	list_del(&bfad->list_entry);
  	mutex_unlock(&bfad_mutex);
  	bfad_pci_uninit(pdev, bfad);
  out_pci_init_failure:
  	kfree(bfad->trcmod);
  out_alloc_trace_failure:
  	kfree(bfad);
  out:
  	return error;
  }
  
  /*
   * PCI remove entry.
   */
  void
  bfad_pci_remove(struct pci_dev *pdev)
  {
  	struct bfad_s	      *bfad = pci_get_drvdata(pdev);
  	unsigned long	flags;
  
  	bfa_trc(bfad, bfad->inst_no);
  
  	spin_lock_irqsave(&bfad->bfad_lock, flags);
  	if (bfad->bfad_tsk != NULL) {
  		spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  		kthread_stop(bfad->bfad_tsk);
  	} else {
  		spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  	}
  
  	/* Send Event BFAD_E_STOP */
  	bfa_sm_send_event(bfad, BFAD_E_STOP);
  
  	/* Driver detach and dealloc mem */
  	spin_lock_irqsave(&bfad->bfad_lock, flags);
  	bfa_detach(&bfad->bfa);
  	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  	bfad_hal_mem_release(bfad);
  
  	/* Remove the debugfs node for this bfad */
  	kfree(bfad->regdata);
  	bfad_debugfs_exit(&bfad->pport);
  
  	/* Cleaning the BFAD instance */
  	mutex_lock(&bfad_mutex);
  	bfad_inst--;
  	list_del(&bfad->list_entry);
  	mutex_unlock(&bfad_mutex);
  	bfad_pci_uninit(pdev, bfad);
  
  	kfree(bfad->trcmod);
  	kfree(bfad);
  }
  
  /*
   * PCI Error Recovery entry, error detected.
   */
  static pci_ers_result_t
  bfad_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
  {
  	struct bfad_s *bfad = pci_get_drvdata(pdev);
  	unsigned long	flags;
  	pci_ers_result_t ret = PCI_ERS_RESULT_NONE;
  
  	dev_printk(KERN_ERR, &pdev->dev,
  		   "error detected state: %d - flags: 0x%x
  ",
  		   state, bfad->bfad_flags);
  
  	switch (state) {
  	case pci_channel_io_normal: /* non-fatal error */
  		spin_lock_irqsave(&bfad->bfad_lock, flags);
  		bfad->bfad_flags &= ~BFAD_EEH_BUSY;
  		/* Suspend/fail all bfa operations */
  		bfa_ioc_suspend(&bfad->bfa.ioc);
  		spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  		del_timer_sync(&bfad->hal_tmo);
  		ret = PCI_ERS_RESULT_CAN_RECOVER;
  		break;
  	case pci_channel_io_frozen: /* fatal error */
  		init_completion(&bfad->comp);
  		spin_lock_irqsave(&bfad->bfad_lock, flags);
  		bfad->bfad_flags |= BFAD_EEH_BUSY;
  		/* Suspend/fail all bfa operations */
  		bfa_ioc_suspend(&bfad->bfa.ioc);
  		bfa_fcs_stop(&bfad->bfa_fcs);
  		spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  		wait_for_completion(&bfad->comp);
  
  		bfad_remove_intr(bfad);
  		del_timer_sync(&bfad->hal_tmo);
  		pci_disable_device(pdev);
  		ret = PCI_ERS_RESULT_NEED_RESET;
  		break;
  	case pci_channel_io_perm_failure: /* PCI Card is DEAD */
  		spin_lock_irqsave(&bfad->bfad_lock, flags);
  		bfad->bfad_flags |= BFAD_EEH_BUSY |
  				    BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE;
  		spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  
  		/* If the error_detected handler is called with the reason
  		 * pci_channel_io_perm_failure - it will subsequently call
  		 * pci_remove() entry point to remove the pci device from the
  		 * system - So defer the cleanup to pci_remove(); cleaning up
  		 * here causes inconsistent state during pci_remove().
  		 */
  		ret = PCI_ERS_RESULT_DISCONNECT;
  		break;
  	default:
  		WARN_ON(1);
  	}
  
  	return ret;
  }
  
  int
  restart_bfa(struct bfad_s *bfad)
  {
  	unsigned long flags;
  	struct pci_dev *pdev = bfad->pcidev;
  
  	bfa_attach(&bfad->bfa, bfad, &bfad->ioc_cfg,
  		   &bfad->meminfo, &bfad->hal_pcidev);
  
  	/* Enable Interrupt and wait bfa_init completion */
  	if (bfad_setup_intr(bfad)) {
  		dev_printk(KERN_WARNING, &pdev->dev,
  			   "%s: bfad_setup_intr failed
  ", bfad->pci_name);
  		bfa_sm_send_event(bfad, BFAD_E_INIT_FAILED);
  		return -1;
  	}
  
  	init_completion(&bfad->comp);
  	spin_lock_irqsave(&bfad->bfad_lock, flags);
  	bfa_iocfc_init(&bfad->bfa);
  	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  
  	/* Set up interrupt handler for each vectors */
  	if ((bfad->bfad_flags & BFAD_MSIX_ON) &&
  	    bfad_install_msix_handler(bfad))
  		dev_printk(KERN_WARNING, &pdev->dev,
  			   "%s: install_msix failed.
  ", bfad->pci_name);
  
  	bfad_init_timer(bfad);
  	wait_for_completion(&bfad->comp);
  	bfad_drv_start(bfad);
  
  	return 0;
  }
  
  /*
   * PCI Error Recovery entry, re-initialize the chip.
   */
  static pci_ers_result_t
  bfad_pci_slot_reset(struct pci_dev *pdev)
  {
  	struct bfad_s *bfad = pci_get_drvdata(pdev);
  	u8 byte;
  
  	dev_printk(KERN_ERR, &pdev->dev,
  		   "bfad_pci_slot_reset flags: 0x%x
  ", bfad->bfad_flags);
  
  	if (pci_enable_device(pdev)) {
  		dev_printk(KERN_ERR, &pdev->dev, "Cannot re-enable "
  			   "PCI device after reset.
  ");
  		return PCI_ERS_RESULT_DISCONNECT;
  	}
  
  	pci_restore_state(pdev);
  
  	/*
  	 * Read some byte (e.g. DMA max. payload size which can't
  	 * be 0xff any time) to make sure - we did not hit another PCI error
  	 * in the middle of recovery. If we did, then declare permanent failure.
  	 */
  	pci_read_config_byte(pdev, 0x68, &byte);
  	if (byte == 0xff) {
  		dev_printk(KERN_ERR, &pdev->dev,
  			   "slot_reset failed ... got another PCI error !
  ");
  		goto out_disable_device;
  	}
  
  	pci_save_state(pdev);
  	pci_set_master(pdev);
  
  	if (pci_set_dma_mask(bfad->pcidev, DMA_BIT_MASK(64)) != 0)
  		if (pci_set_dma_mask(bfad->pcidev, DMA_BIT_MASK(32)) != 0)
  			goto out_disable_device;
  
  	pci_cleanup_aer_uncorrect_error_status(pdev);
  
  	if (restart_bfa(bfad) == -1)
  		goto out_disable_device;
  
  	pci_enable_pcie_error_reporting(pdev);
  	dev_printk(KERN_WARNING, &pdev->dev,
  		   "slot_reset completed  flags: 0x%x!
  ", bfad->bfad_flags);
  
  	return PCI_ERS_RESULT_RECOVERED;
  
  out_disable_device:
  	pci_disable_device(pdev);
  	return PCI_ERS_RESULT_DISCONNECT;
  }
  
  static pci_ers_result_t
  bfad_pci_mmio_enabled(struct pci_dev *pdev)
  {
  	unsigned long	flags;
  	struct bfad_s *bfad = pci_get_drvdata(pdev);
  
  	dev_printk(KERN_INFO, &pdev->dev, "mmio_enabled
  ");
  
  	/* Fetch FW diagnostic information */
  	bfa_ioc_debug_save_ftrc(&bfad->bfa.ioc);
  
  	/* Cancel all pending IOs */
  	spin_lock_irqsave(&bfad->bfad_lock, flags);
  	init_completion(&bfad->comp);
  	bfa_fcs_stop(&bfad->bfa_fcs);
  	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  	wait_for_completion(&bfad->comp);
  
  	bfad_remove_intr(bfad);
  	del_timer_sync(&bfad->hal_tmo);
  	pci_disable_device(pdev);
  
  	return PCI_ERS_RESULT_NEED_RESET;
  }
  
  static void
  bfad_pci_resume(struct pci_dev *pdev)
  {
  	unsigned long	flags;
  	struct bfad_s *bfad = pci_get_drvdata(pdev);
  
  	dev_printk(KERN_WARNING, &pdev->dev, "resume
  ");
  
  	/* wait until the link is online */
  	bfad_rport_online_wait(bfad);
  
  	spin_lock_irqsave(&bfad->bfad_lock, flags);
  	bfad->bfad_flags &= ~BFAD_EEH_BUSY;
  	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
  }
  
  struct pci_device_id bfad_id_table[] = {
  	{
  		.vendor = BFA_PCI_VENDOR_ID_BROCADE,
  		.device = BFA_PCI_DEVICE_ID_FC_8G2P,
  		.subvendor = PCI_ANY_ID,
  		.subdevice = PCI_ANY_ID,
  	},
  	{
  		.vendor = BFA_PCI_VENDOR_ID_BROCADE,
  		.device = BFA_PCI_DEVICE_ID_FC_8G1P,
  		.subvendor = PCI_ANY_ID,
  		.subdevice = PCI_ANY_ID,
  	},
  	{
  		.vendor = BFA_PCI_VENDOR_ID_BROCADE,
  		.device = BFA_PCI_DEVICE_ID_CT,
  		.subvendor = PCI_ANY_ID,
  		.subdevice = PCI_ANY_ID,
  		.class = (PCI_CLASS_SERIAL_FIBER << 8),
  		.class_mask = ~0,
  	},
  	{
  		.vendor = BFA_PCI_VENDOR_ID_BROCADE,
  		.device = BFA_PCI_DEVICE_ID_CT_FC,
  		.subvendor = PCI_ANY_ID,
  		.subdevice = PCI_ANY_ID,
  		.class = (PCI_CLASS_SERIAL_FIBER << 8),
  		.class_mask = ~0,
  	},
  	{
  		.vendor = BFA_PCI_VENDOR_ID_BROCADE,
  		.device = BFA_PCI_DEVICE_ID_CT2,
  		.subvendor = PCI_ANY_ID,
  		.subdevice = PCI_ANY_ID,
  		.class = (PCI_CLASS_SERIAL_FIBER << 8),
  		.class_mask = ~0,
  	},
  
  	{
  		.vendor = BFA_PCI_VENDOR_ID_BROCADE,
  		.device = BFA_PCI_DEVICE_ID_CT2_QUAD,
  		.subvendor = PCI_ANY_ID,
  		.subdevice = PCI_ANY_ID,
  		.class = (PCI_CLASS_SERIAL_FIBER << 8),
  		.class_mask = ~0,
  	},
  	{0, 0},
  };
  
  MODULE_DEVICE_TABLE(pci, bfad_id_table);
  
  /*
   * PCI error recovery handlers.
   */
  static struct pci_error_handlers bfad_err_handler = {
  	.error_detected = bfad_pci_error_detected,
  	.slot_reset = bfad_pci_slot_reset,
  	.mmio_enabled = bfad_pci_mmio_enabled,
  	.resume = bfad_pci_resume,
  };
  
  static struct pci_driver bfad_pci_driver = {
  	.name = BFAD_DRIVER_NAME,
  	.id_table = bfad_id_table,
  	.probe = bfad_pci_probe,
  	.remove = bfad_pci_remove,
  	.err_handler = &bfad_err_handler,
  };
  
  /*
   * Driver module init.
   */
  static int __init
  bfad_init(void)
  {
  	int		error = 0;
  
  	printk(KERN_INFO "Brocade BFA FC/FCOE SCSI driver - version: %s
  ",
  			BFAD_DRIVER_VERSION);
  
  	if (num_sgpgs > 0)
  		num_sgpgs_parm = num_sgpgs;
  
  	error = bfad_im_module_init();
  	if (error) {
  		error = -ENOMEM;
  		printk(KERN_WARNING "bfad_im_module_init failure
  ");
  		goto ext;
  	}
  
  	if (strcmp(FCPI_NAME, " fcpim") == 0)
  		supported_fc4s |= BFA_LPORT_ROLE_FCP_IM;
  
  	bfa_auto_recover = ioc_auto_recover;
  	bfa_fcs_rport_set_del_timeout(rport_del_timeout);
  	bfa_fcs_rport_set_max_logins(max_rport_logins);
  
  	error = pci_register_driver(&bfad_pci_driver);
  	if (error) {
  		printk(KERN_WARNING "pci_register_driver failure
  ");
  		goto ext;
  	}
  
  	return 0;
  
  ext:
  	bfad_im_module_exit();
  	return error;
  }
  
  /*
   * Driver module exit.
   */
  static void __exit
  bfad_exit(void)
  {
  	pci_unregister_driver(&bfad_pci_driver);
  	bfad_im_module_exit();
  	bfad_free_fwimg();
  }
  
  /* Firmware handling */
  static void
  bfad_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
  		u32 *bfi_image_size, char *fw_name)
  {
  	const struct firmware *fw;
  
  	if (request_firmware(&fw, fw_name, &pdev->dev)) {
  		printk(KERN_ALERT "Can't locate firmware %s
  ", fw_name);
  		*bfi_image = NULL;
  		goto out;
  	}
  
  	*bfi_image = vmalloc(fw->size);
  	if (NULL == *bfi_image) {
  		printk(KERN_ALERT "Fail to allocate buffer for fw image "
  			"size=%x!
  ", (u32) fw->size);
  		goto out;
  	}
  
  	memcpy(*bfi_image, fw->data, fw->size);
  	*bfi_image_size = fw->size/sizeof(u32);
  out:
  	release_firmware(fw);
  }
  
  static u32 *
  bfad_load_fwimg(struct pci_dev *pdev)
  {
  	if (bfa_asic_id_ct2(pdev->device)) {
  		if (bfi_image_ct2_size == 0)
  			bfad_read_firmware(pdev, &bfi_image_ct2,
  				&bfi_image_ct2_size, BFAD_FW_FILE_CT2);
  		return bfi_image_ct2;
  	} else if (bfa_asic_id_ct(pdev->device)) {
  		if (bfi_image_ct_size == 0)
  			bfad_read_firmware(pdev, &bfi_image_ct,
  				&bfi_image_ct_size, BFAD_FW_FILE_CT);
  		return bfi_image_ct;
  	} else if (bfa_asic_id_cb(pdev->device)) {
  		if (bfi_image_cb_size == 0)
  			bfad_read_firmware(pdev, &bfi_image_cb,
  				&bfi_image_cb_size, BFAD_FW_FILE_CB);
  		return bfi_image_cb;
  	}
  
  	return NULL;
  }
  
  static void
  bfad_free_fwimg(void)
  {
  	if (bfi_image_ct2_size && bfi_image_ct2)
  		vfree(bfi_image_ct2);
  	if (bfi_image_ct_size && bfi_image_ct)
  		vfree(bfi_image_ct);
  	if (bfi_image_cb_size && bfi_image_cb)
  		vfree(bfi_image_cb);
  }
  
  module_init(bfad_init);
  module_exit(bfad_exit);
  MODULE_LICENSE("GPL");
  MODULE_DESCRIPTION("Brocade Fibre Channel HBA Driver" BFAD_PROTO_NAME);
  MODULE_AUTHOR("Brocade Communications Systems, Inc.");
  MODULE_VERSION(BFAD_DRIVER_VERSION);