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linux/drivers/scsi/bfa/bfad_drv.h
Arnd Bergmann 37126399da scsi: bfa: Fix function pointer type mismatch for state machines 
The bfa driver is full of state machines and a generic abstraction layer
for them. This relies on casting function pointers, but that is no longer
allowed when CONFIG_CFI_CLANG is enabled and causes a huge number of
warnings like:

drivers/scsi/bfa/bfad.c:169:3: error: cast from 'void (*)(struct bfad_s *, enum bfad_sm_event)' to 'bfa_sm_t' (aka 'void (*)(void *, int)') converts to incompatible function type [-Werror,-Wcast-function-type-strict]
                bfa_sm_set_state(bfad, bfad_sm_created);
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Rework the mechanism to no longer require the function pointer casts, by
having separate types for each individual state machine. This in turn
requires moving the enum definitions for each state machine into the header
files in order to define the typedef.

Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20240222124433.2046570-2-arnd@kernel.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-02-26 21:16:48 -05:00

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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
* Copyright (c) 2014- QLogic Corporation.
* All rights reserved
* www.qlogic.com
*
* Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
*/
/*
* 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 "3.2.25.1"
#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
#define BFAD_EEH_BUSY 0x00000800
#define BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE 0x00001000
/*
* 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 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_HAL_INIT_FAILED = 5,
BFAD_E_INIT_FAILED = 6,
BFAD_E_FCS_EXIT_COMP = 7,
BFAD_E_EXIT_COMP = 8,
BFAD_E_STOP = 9
};
struct bfad_s;
typedef void (*bfad_sm_t)(struct bfad_s *, enum bfad_sm_event);
/*
* BFAD (PCI function) data structure
*/
struct bfad_s {
bfad_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;
};
/*
* 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(struct timer_list *t);
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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