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linux/drivers/scsi/bfa/bfad_drv.h
Krishna Gudipati 5b7db7af52 [SCSI] bfa: Implement LUN Masking feature using the SCSI Slave Callouts. 
This patch re-implements LUN Masking feature using SCSI Slave Callouts.  With
the new design in the slave_alloc entry point; for each new LUN discovered we
check with our internal LUN Masking config whether to expose or to mask this
particular LUN. We return -ENXIO (No such device or address) from slave_alloc
for the LUNs we don't want to be exposed.  We also notify the SCSI mid-layer
to do a sequential LUN scan rather than REPORT_LUNS based scan if LUN masking
is enabled on our HBA port, since a -ENXIO from any LUN in REPORT_LUNS based
scan translates to a scan abort.  This patch also handles the dynamic lun
masking config change from enable to disable or vice-versa by resetting
sdev_bflags of LUN 0 appropriately.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-01-10 17:01:24 -06:00

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/*
* 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.
*/
/*
* Contains base driver definitions.
*/
/*
* bfa_drv.h Linux driver data structures.
*/
#ifndef __BFAD_DRV_H__
#define __BFAD_DRV_H__
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/idr.h>
#include <linux/interrupt.h>
#include <linux/cdev.h>
#include <linux/fs.h>
#include <linux/delay.h>
#include <linux/vmalloc.h>
#include <linux/workqueue.h>
#include <linux/bitops.h>
#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_transport_fc.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_bsg_fc.h>
#include <scsi/scsi_devinfo.h>
#include "bfa_modules.h"
#include "bfa_fcs.h"
#include "bfa_defs_fcs.h"
#include "bfa_plog.h"
#include "bfa_cs.h"
#define BFAD_DRIVER_NAME "bfa"
#ifdef BFA_DRIVER_VERSION
#define BFAD_DRIVER_VERSION BFA_DRIVER_VERSION
#else
#define BFAD_DRIVER_VERSION "3.0.2.2"
#endif
#define BFAD_PROTO_NAME FCPI_NAME
#define BFAD_IRQ_FLAGS IRQF_SHARED
#ifndef FC_PORTSPEED_8GBIT
#define FC_PORTSPEED_8GBIT 0x10
#endif
/*
* BFAD flags
*/
#define BFAD_MSIX_ON 0x00000001
#define BFAD_HAL_INIT_DONE 0x00000002
#define BFAD_DRV_INIT_DONE 0x00000004
#define BFAD_CFG_PPORT_DONE 0x00000008
#define BFAD_HAL_START_DONE 0x00000010
#define BFAD_PORT_ONLINE 0x00000020
#define BFAD_RPORT_ONLINE 0x00000040
#define BFAD_FCS_INIT_DONE 0x00000080
#define BFAD_HAL_INIT_FAIL 0x00000100
#define BFAD_FC4_PROBE_DONE 0x00000200
#define BFAD_PORT_DELETE 0x00000001
#define BFAD_INTX_ON 0x00000400
/*
* BFAD related definition
*/
#define SCSI_SCAN_DELAY HZ
#define BFAD_STOP_TIMEOUT 30
#define BFAD_SUSPEND_TIMEOUT BFAD_STOP_TIMEOUT
/*
* BFAD configuration parameter default values
*/
#define BFAD_LUN_QUEUE_DEPTH 32
#define BFAD_IO_MAX_SGE SG_ALL
#define BFAD_MIN_SECTORS 128 /* 64k */
#define BFAD_MAX_SECTORS 0xFFFF /* 32 MB */
#define bfad_isr_t irq_handler_t
#define MAX_MSIX_ENTRY 22
struct bfad_msix_s {
struct bfad_s *bfad;
struct msix_entry msix;
char name[32];
};
/*
* Only append to the enums defined here to avoid any versioning
* needed between trace utility and driver version
*/
enum {
BFA_TRC_LDRV_BFAD = 1,
BFA_TRC_LDRV_IM = 2,
BFA_TRC_LDRV_BSG = 3,
};
enum bfad_port_pvb_type {
BFAD_PORT_PHYS_BASE = 0,
BFAD_PORT_PHYS_VPORT = 1,
BFAD_PORT_VF_BASE = 2,
BFAD_PORT_VF_VPORT = 3,
};
/*
* PORT data structure
*/
struct bfad_port_s {
struct list_head list_entry;
struct bfad_s *bfad;
struct bfa_fcs_lport_s *fcs_port;
u32 roles;
s32 flags;
u32 supported_fc4s;
enum bfad_port_pvb_type pvb_type;
struct bfad_im_port_s *im_port; /* IM specific data */
/* port debugfs specific data */
struct dentry *port_debugfs_root;
};
/*
* VPORT data structure
*/
struct bfad_vport_s {
struct bfad_port_s drv_port;
struct bfa_fcs_vport_s fcs_vport;
struct completion *comp_del;
struct list_head list_entry;
};
/*
* VF data structure
*/
struct bfad_vf_s {
bfa_fcs_vf_t fcs_vf;
struct bfad_port_s base_port; /* base port for vf */
struct bfad_s *bfad;
};
struct bfad_cfg_param_s {
u32 rport_del_timeout;
u32 ioc_queue_depth;
u32 lun_queue_depth;
u32 io_max_sge;
u32 binding_method;
};
union bfad_tmp_buf {
/* From struct bfa_adapter_attr_s */
char manufacturer[BFA_ADAPTER_MFG_NAME_LEN];
char serial_num[BFA_ADAPTER_SERIAL_NUM_LEN];
char model[BFA_ADAPTER_MODEL_NAME_LEN];
char fw_ver[BFA_VERSION_LEN];
char optrom_ver[BFA_VERSION_LEN];
/* From struct bfa_ioc_pci_attr_s */
u8 chip_rev[BFA_IOC_CHIP_REV_LEN]; /* chip revision */
wwn_t wwn[BFA_FCS_MAX_LPORTS];
};
/*
* BFAD (PCI function) data structure
*/
struct bfad_s {
bfa_sm_t sm; /* state machine */
struct list_head list_entry;
struct bfa_s bfa;
struct bfa_fcs_s bfa_fcs;
struct pci_dev *pcidev;
const char *pci_name;
struct bfa_pcidev_s hal_pcidev;
struct bfa_ioc_pci_attr_s pci_attr;
void __iomem *pci_bar0_kva;
void __iomem *pci_bar2_kva;
struct completion comp;
struct completion suspend;
struct completion enable_comp;
struct completion disable_comp;
bfa_boolean_t disable_active;
struct bfad_port_s pport; /* physical port of the BFAD */
struct bfa_meminfo_s meminfo;
struct bfa_iocfc_cfg_s ioc_cfg;
u32 inst_no; /* BFAD instance number */
u32 bfad_flags;
spinlock_t bfad_lock;
struct task_struct *bfad_tsk;
struct bfad_cfg_param_s cfg_data;
struct bfad_msix_s msix_tab[MAX_MSIX_ENTRY];
int nvec;
char adapter_name[BFA_ADAPTER_SYM_NAME_LEN];
char port_name[BFA_ADAPTER_SYM_NAME_LEN];
struct timer_list hal_tmo;
unsigned long hs_start;
struct bfad_im_s *im; /* IM specific data */
struct bfa_trc_mod_s *trcmod;
struct bfa_plog_s plog_buf;
int ref_count;
union bfad_tmp_buf tmp_buf;
struct fc_host_statistics link_stats;
struct list_head pbc_vport_list;
/* debugfs specific data */
char *regdata;
u32 reglen;
struct dentry *bfad_dentry_files[5];
struct list_head free_aen_q;
struct list_head active_aen_q;
struct bfa_aen_entry_s aen_list[BFA_AEN_MAX_ENTRY];
spinlock_t bfad_aen_spinlock;
struct list_head vport_list;
};
/* BFAD state machine events */
enum bfad_sm_event {
BFAD_E_CREATE = 1,
BFAD_E_KTHREAD_CREATE_FAILED = 2,
BFAD_E_INIT = 3,
BFAD_E_INIT_SUCCESS = 4,
BFAD_E_INIT_FAILED = 5,
BFAD_E_INTR_INIT_FAILED = 6,
BFAD_E_FCS_EXIT_COMP = 7,
BFAD_E_EXIT_COMP = 8,
BFAD_E_STOP = 9
};
/*
* RPORT data structure
*/
struct bfad_rport_s {
struct bfa_fcs_rport_s fcs_rport;
};
struct bfad_buf_info {
void *virt;
dma_addr_t phys;
u32 size;
};
struct bfad_fcxp {
struct bfad_port_s *port;
struct bfa_rport_s *bfa_rport;
bfa_status_t req_status;
u16 tag;
u16 rsp_len;
u16 rsp_maxlen;
u8 use_ireqbuf;
u8 use_irspbuf;
u32 num_req_sgles;
u32 num_rsp_sgles;
struct fchs_s fchs;
void *reqbuf_info;
void *rspbuf_info;
struct bfa_sge_s *req_sge;
struct bfa_sge_s *rsp_sge;
fcxp_send_cb_t send_cbfn;
void *send_cbarg;
void *bfa_fcxp;
struct completion comp;
};
struct bfad_hal_comp {
bfa_status_t status;
struct completion comp;
};
#define BFA_LOG(level, bfad, mask, fmt, arg...) \
do { \
if (((mask) == 4) || (level[1] <= '4')) \
dev_printk(level, &((bfad)->pcidev)->dev, fmt, ##arg); \
} while (0)
bfa_status_t bfad_vport_create(struct bfad_s *bfad, u16 vf_id,
struct bfa_lport_cfg_s *port_cfg,
struct device *dev);
bfa_status_t bfad_vf_create(struct bfad_s *bfad, u16 vf_id,
struct bfa_lport_cfg_s *port_cfg);
bfa_status_t bfad_cfg_pport(struct bfad_s *bfad, enum bfa_lport_role role);
bfa_status_t bfad_drv_init(struct bfad_s *bfad);
bfa_status_t bfad_start_ops(struct bfad_s *bfad);
void bfad_drv_start(struct bfad_s *bfad);
void bfad_uncfg_pport(struct bfad_s *bfad);
void bfad_stop(struct bfad_s *bfad);
void bfad_fcs_stop(struct bfad_s *bfad);
void bfad_remove_intr(struct bfad_s *bfad);
void bfad_hal_mem_release(struct bfad_s *bfad);
void bfad_hcb_comp(void *arg, bfa_status_t status);
int bfad_setup_intr(struct bfad_s *bfad);
void bfad_remove_intr(struct bfad_s *bfad);
void bfad_update_hal_cfg(struct bfa_iocfc_cfg_s *bfa_cfg);
bfa_status_t bfad_hal_mem_alloc(struct bfad_s *bfad);
void bfad_bfa_tmo(unsigned long data);
void bfad_init_timer(struct bfad_s *bfad);
int bfad_pci_init(struct pci_dev *pdev, struct bfad_s *bfad);
void bfad_pci_uninit(struct pci_dev *pdev, struct bfad_s *bfad);
void bfad_drv_uninit(struct bfad_s *bfad);
int bfad_worker(void *ptr);
void bfad_debugfs_init(struct bfad_port_s *port);
void bfad_debugfs_exit(struct bfad_port_s *port);
void bfad_pci_remove(struct pci_dev *pdev);
int bfad_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pid);
void bfad_rport_online_wait(struct bfad_s *bfad);
int bfad_get_linkup_delay(struct bfad_s *bfad);
int bfad_install_msix_handler(struct bfad_s *bfad);
extern struct idr bfad_im_port_index;
extern struct pci_device_id bfad_id_table[];
extern struct list_head bfad_list;
extern char *os_name;
extern char *os_patch;
extern char *host_name;
extern int num_rports;
extern int num_ios;
extern int num_tms;
extern int num_fcxps;
extern int num_ufbufs;
extern int reqq_size;
extern int rspq_size;
extern int num_sgpgs;
extern int rport_del_timeout;
extern int bfa_lun_queue_depth;
extern int bfa_io_max_sge;
extern int bfa_log_level;
extern int ioc_auto_recover;
extern int bfa_linkup_delay;
extern int msix_disable_cb;
extern int msix_disable_ct;
extern int fdmi_enable;
extern int supported_fc4s;
extern int pcie_max_read_reqsz;
extern int max_xfer_size;
extern int bfa_debugfs_enable;
extern struct mutex bfad_mutex;
#endif /* __BFAD_DRV_H__ */
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