/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _CFGA_FP_H
#define _CFGA_FP_H



#ifdef __cplusplus
extern "C" {
#endif

#include <sys/types.h>
#include <sys/mkdev.h>
#include <stddef.h>
#include <locale.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <locale.h>
#include <langinfo.h>
#include <time.h>
#include <stdarg.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <sys/dditypes.h>
#include <sys/modctl.h>
#include <libdevinfo.h>
#include <libdevice.h>
#include <librcm.h>
#include <dirent.h>
#include <strings.h>


#include <sys/ioctl.h>
#include <sys/byteorder.h>
#include <sys/scsi/scsi.h>
#include <strings.h>
#include <sys/vfstab.h>
#include <sys/stat.h>
#include <setjmp.h>
#include <signal.h>
#include <hbaapi.h>
#include <sys/fibre-channel/fcio.h>
#include <sys/fibre-channel/ulp/fcp_util.h>

#include <sys/uio.h>
#include <sys/param.h>

#include <synch.h>
#include <thread.h>

#include <limits.h>
#include <ftw.h>

#define CFGA_PLUGIN_LIB
#include <config_admin.h>

#if     !defined(DEBUG)
#define NDEBUG  1
#else
#undef  NDEBUG
#endif

#include <assert.h>

/* Return/error codes */
typedef enum {
        FPCFGA_ERR = -2,
        FPCFGA_LIB_ERR = -1,
        FPCFGA_OK = 0,
        FPCFGA_ACCESS_OK,
        FPCFGA_NACK,
        FPCFGA_BUSY,
        FPCFGA_SYSTEM_BUSY,
        FPCFGA_APID_NOCONFIGURE,
        FPCFGA_APID_NOACCESS,
        FPCFGA_APID_NOEXIST,
        FPCFGA_OPNOTSUPP,
        FPCFGA_PRIV,
        FPCFGA_UNLOCKED,
        FPCFGA_NO_REC,
        FPCFGA_OP_INTR,
        FPCFGA_DB_INVAL,
        FPCFGA_CONF_OK_UPD_REP_FAILED,
        FPCFGA_UNCONF_OK_UPD_REP_FAILED,
        FPCFGA_INVALID_PATH,
        FPCFGA_VHCI_GET_PATHLIST_FAILED,
        FPCFGA_XPORT_NOT_IN_PHCI_LIST,
        FPCFGA_UNKNOWN_ERR,
        FPCFGA_FCP_TGT_SEND_SCSI_FAILED,
        FPCFGA_FCP_SEND_SCSI_DEV_NOT_TGT
} fpcfga_ret_t;

/* Commands used internally */
typedef enum {
        FPCFGA_INVAL_CMD = -1,
        FPCFGA_DEV_OP = 0,
        FPCFGA_BUS_OP,
        FPCFGA_STAT_FC_DEV,
        FPCFGA_STAT_FCA_PORT,
        FPCFGA_STAT_ALL,
        FPCFGA_GET_DEVPATH,
        FPCFGA_INSERT_DEV,
        FPCFGA_REMOVE_DEV,
        FPCFGA_REPLACE_DEV,
        FPCFGA_WALK_NODE,
        FPCFGA_WALK_MINOR,
        FPCFGA_BUS_QUIESCE,
        FPCFGA_BUS_UNQUIESCE,
        FPCFGA_BUS_GETSTATE,
        FPCFGA_DEV_GETSTATE,
        FPCFGA_BUS_CONFIGURE,
        FPCFGA_BUS_UNCONFIGURE,
        FPCFGA_DEV_CONFIGURE,
        FPCFGA_DEV_UNCONFIGURE,
        FPCFGA_DEV_REMOVE,
        FPCFGA_RESET_DEV,
        FPCFGA_RESET_BUS,
        FPCFGA_RESET_ALL,
        FPCFGA_READ,
        FPCFGA_WRITE
} fpcfga_cmd_t;

typedef enum {
        FPCFGA_TERMINATE = 0,
        FPCFGA_CONTINUE
} fpcfga_recur_t;


/* Structures for tree walking code */

typedef struct {
        uint_t flags;
        int (*fcn)(di_node_t node, void *argp);
} walk_node_t;

typedef struct {
        const char *nodetype;
        int (*fcn)(di_node_t node, di_minor_t minor, void *argp);
} walk_minor_t;

typedef union {
        walk_node_t     node_args;
        walk_minor_t    minor_args;
} walkmode_t;

typedef struct {
        uint_t flags;
        walkmode_t walkmode;
} walkarg_t;

typedef struct {
        char *phys;
        char *log;
        fpcfga_ret_t ret;
        int match_minor;
        int l_errno;
} pathm_t;

typedef struct ldata_list {
        cfga_list_data_t ldata;
        struct ldata_list *next;
} ldata_list_t;

typedef struct {
        struct cfga_confirm     *confp;
        struct cfga_msg         *msgp;
} prompt_t;

typedef struct luninfo_list {
        int     lunnum;
        uint_t  node_state;
        uint_t  lun_flag;
        char    *path;
        struct luninfo_list *next;
} luninfo_list_t;

typedef struct {
        char            *xport_phys;
        char            *dyncomp;
        uint_t          flags;
        luninfo_list_t  *lunlist;       /* Singly linked list */
} apid_t;

/* Report luns names */
#define FP_SCMD_REPORT_LUN      0xA0
#define DEFAULT_NUM_LUN         1024
#define REPORT_LUN_HDR_SIZE     8
#define SAM_LUN_SIZE            8

#ifdef _BIG_ENDIAN
#define htonll(x)       (x)
#define ntohll(x)       (x)
#else
#define htonll(x)   ((((unsigned long long)htonl(x)) << 32) + htonl(x >> 32))
#define ntohll(x)   ((((unsigned long long)ntohl(x)) << 32) + ntohl(x >> 32))
#endif

typedef struct report_lun_resp {
        uint32_t        num_lun;
        uint32_t        reserved;
        longlong_t      lun_string[DEFAULT_NUM_LUN];
} report_lun_resp_t;

/*
 * Hardware options acceptable for fp plugin.
 * list related options are handled by getsupopts() and set to
 * index of array.
 */
#define OPT_DEVINFO_FORCE       0
#define OPT_SHOW_SCSI_LUN       1
#define OPT_FCP_DEV             2
#define OPT_DISABLE_RCM         0
#define OPT_FORCE_UPDATE_REP    1
#define OPT_NO_UPDATE_REP       2
#define OPT_REMOVE_UNUSABLE_SCSI_LUN    3
#define OPT_REMOVE_UNUSABLE_FCP_DEV     4

/* walk tree flag */
#define FLAG_PATH_INFO_WALK     0x00000001

/* apid_t flags */
#define FLAG_DISABLE_RCM        0x00000001
#define FLAG_FORCE_UPDATE_REP   0x00000010
#define FLAG_NO_UPDATE_REP      0x00000100
#define FLAG_DYN_AP_CONFIGURED  0x00001000
#define FLAG_DEVINFO_FORCE      0x00010000
#define FLAG_FCP_DEV            0x00100000
#define FLAG_REMOVE_UNUSABLE_FCP_DEV    0x01000000

/* apid_t lun flags */
#define FLAG_SKIP_RCMOFFLINE    0x00000001
#define FLAG_SKIP_RCMREMOVE     0x00000010
#define FLAG_SKIP_ONLINEOTHERS  0x00000100

/* define for peripheral qualifier mask */
#define FP_PERI_QUAL_MASK       0xE0

/* Message ids */
typedef enum {

/* ERRORS */
ERR_UNKNOWN = -1,
ERR_OP_FAILED,
ERR_CMD_INVAL,
ERR_NOT_BUSAPID,
ERR_APID_INVAL,
ERR_NOT_BUSOP,
ERR_NOT_DEVOP,
ERR_UNAVAILABLE,
ERR_CTRLR_CRIT,
ERR_BUS_GETSTATE,
ERR_BUS_NOTCONNECTED,
ERR_BUS_CONNECTED,
ERR_BUS_QUIESCE,
ERR_BUS_UNQUIESCE,
ERR_BUS_CONFIGURE,
ERR_BUS_UNCONFIGURE,
ERR_DEV_CONFIGURE,
ERR_DEV_UNCONFIGURE,
ERR_FCA_CONFIGURE,
ERR_FCA_UNCONFIGURE,
ERR_DEV_REPLACE,
ERR_DEV_INSERT,
ERR_DEV_GETSTATE,
ERR_RESET,
ERR_LIST,
ERR_FC,
ERR_FC_GET_DEVLIST,
ERR_FC_GET_FIRST_DEV,
ERR_FC_GET_NEXT_DEV,
ERRARG_FC_DEV_MAP_INIT,
ERRARG_FC_PROP_LOOKUP_BYTES,
ERRARG_FC_INQUIRY,
ERRARG_FC_REP_LUNS,
ERRARG_FC_TOPOLOGY,
ERRARG_PATH_TOO_LONG,
ERRARG_INVALID_PATH,
ERRARG_OPENDIR,
ERRARG_VHCI_GET_PATHLIST,
ERRARG_XPORT_NOT_IN_PHCI_LIST,
ERR_SIG_STATE,
ERR_MAYBE_BUSY,
ERR_BUS_DEV_MISMATCH,
ERR_GET_DEVLIST,
ERR_MEM_ALLOC,
ERR_DEVCTL_OFFLINE,
ERR_UPD_REP,
ERR_CONF_OK_UPD_REP,
ERR_UNCONF_OK_UPD_REP,
ERR_PARTIAL_SUCCESS,
ERR_HBA_LOAD_LIBRARY,
ERR_MATCHING_HBA_PORT,
ERR_NO_ADAPTER_FOUND,

/* Errors with arguments */
ERRARG_OPT_INVAL,
ERRARG_HWCMD_INVAL,
ERRARG_DEVINFO,
ERRARG_NOT_IN_DEVLIST,
ERRARG_NOT_IN_DEVINFO,
ERRARG_DI_GET_PROP,
ERRARG_DC_DDEF_ALLOC,
ERRARG_DC_BYTE_ARRAY,
ERRARG_DC_BUS_ACQUIRE,
ERRARG_BUS_DEV_CREATE,
ERRARG_BUS_DEV_CREATE_UNKNOWN,
ERRARG_DEV_ACQUIRE,
ERRARG_DEV_REMOVE,

/* RCM Errors */
ERR_RCM_HANDLE,
ERRARG_RCM_SUSPEND,
ERRARG_RCM_RESUME,
ERRARG_RCM_OFFLINE,
ERRARG_RCM_ONLINE,
ERRARG_RCM_REMOVE,
ERRARG_RCM_INFO,

/* Commands */
CMD_INSERT_DEV,
CMD_REMOVE_DEV,
CMD_REPLACE_DEV,
CMD_RESET_DEV,
CMD_RESET_BUS,
CMD_RESET_ALL,

/* help messages */
MSG_HELP_HDR,
MSG_HELP_USAGE,

/* Hotplug messages */
MSG_INSDEV,
MSG_RMDEV,
MSG_REPLDEV,

/* Hotplugging confirmation prompts */
CONF_QUIESCE_1,
CONF_QUIESCE_2,
CONF_UNQUIESCE,

/* Misc. */
WARN_DISCONNECT
} msgid_t;

typedef struct {
        msgid_t str_id;
        fpcfga_cmd_t cmd;
        fpcfga_ret_t (*fcn)(fpcfga_cmd_t, apid_t *, prompt_t *, char **);
} hw_cmd_t;

typedef struct {
        msgid_t msgid;
        int nargs;              /* Number of arguments following msgid */
        int intl;               /* Flag: if 1, internationalize */
        const char *msgstr;
} msgcvt_t;


#define SLASH                   "/"
#define CFGA_DEV_DIR            "/dev/cfg"
#define DEV_DIR                 "/dev"
#define DEVICES_DIR             "/devices"
#define DEV_DSK                 "/dev/dsk"
#define DEV_RDSK                "/dev/rdsk"
#define DEV_RMT                 "/dev/rmt"
#define DSK_DIR                 "dsk"
#define RDSK_DIR                "rdsk"
#define RMT_DIR                 "rmt"


#define DYN_SEP                 "::"
#define LUN_COMP_SEP            ","
#define MINOR_SEP               ":"

#define S_FREE(x)       (((x) != NULL) ? (free(x), (x) = NULL) : (void *)0)
#define S_STR(x)        (((x) == NULL) ? "" : (x))


#define IS_STUB_NODE(s) (di_instance(s) == -1 &&        \
                            di_nodeid(s) == (DI_PROM_NODEID))

#define GET_MSG_STR(i)          (str_tbl[msg_idx(i)].msgstr)

#define GET_DYN(a)      (((a) != NULL) ? strstr((a), DYN_SEP) : (void *)0)
#define GET_LUN_DYN(a)  (((a) != NULL) ? strstr((a), LUN_COMP_SEP) : (void *)0)

/*
 * The following macro removes the separator from the dynamic component.
 */
#define DYN_TO_DYNCOMP(a)       ((a) + strlen(DYN_SEP))
#define LUN_DYN_TO_LUNCOMP(a)   ((a) + strlen(LUN_COMP_SEP))

/*
 * Property names
 */
#define PORT_WWN_PROP   "port-wwn"
#define LUN_GUID_PROP   "client-guid"
#define LUN_PROP        "lun"

#define WWN_S_LEN       17      /* NULL terminated string */
#define WWN_SIZE        8
/* Constants used for repository updates */
#define ADD_ENTRY       0
#define REMOVE_ENTRY    1

#define FAB_REPOSITORY_DIR      "/etc/cfg/fp"
#define FAB_REPOSITORY          "/etc/cfg/fp/fabric_WWN_map"
#define TMP_FAB_REPOSITORY      "/etc/cfg/fp/fabric_WWN_map.tmp"
#define OLD_FAB_REPOSITORY      "/etc/cfg/fp/fabric_WWN_map.old"

/* MPXIO VHCI root dir */
#define SCSI_VHCI_ROOT          "/devices/scsi_vhci/"
#define SCSI_VHCI_DRVR          "scsi_vhci"
#define HBA_MAX_RETRIES         10

/* Function prototypes */

fpcfga_ret_t get_report_lun_data(const char *xport_phys,
        const char *dyncomp, int *num_luns, report_lun_resp_t **resp_buf,
        struct scsi_extended_sense *sense, int *l_errnop);
/* Functions in cfga_cs.c */
fpcfga_ret_t
dev_change_state(cfga_cmd_t, apid_t *, la_wwn_t *, cfga_flags_t, char **,
    HBA_HANDLE handle, HBA_PORTATTRIBUTES portAttrs);
fpcfga_ret_t
fca_change_state(cfga_cmd_t, apid_t *, cfga_flags_t, char **);

/* Functions in cfga_rep.c */
int update_fabric_wwn_list(int, const char *, char **);

fpcfga_ret_t dev_insert(fpcfga_cmd_t cmd, apid_t *apidp, prompt_t *argsp,
    char **errstring);
fpcfga_ret_t dev_replace(fpcfga_cmd_t cmd, apid_t *apidp, prompt_t *argsp,
    char **errstring);
fpcfga_ret_t dev_remove(fpcfga_cmd_t cmd, apid_t *apidp, prompt_t *argsp,
    char **errstring);
fpcfga_ret_t reset_common(fpcfga_cmd_t cmd, apid_t *apidp, prompt_t *argsp,
    char **errstring);


/* List related routines */
fpcfga_ret_t do_list(apid_t *apidp, fpcfga_cmd_t cmd,
    ldata_list_t **ldatalistp, int *nelem, char **errstring);
fpcfga_ret_t do_list_FCP_dev(const char *ap_id, uint_t flags, fpcfga_cmd_t cmd,
        ldata_list_t **llpp, int *nelemp, char **errstring);
fpcfga_ret_t list_ext_postprocess(ldata_list_t **ldatalistp, int nelem,
    cfga_list_data_t **ap_id_list, int *nlistp, char **errstring);
int stat_path_info_node(di_node_t root, void *arg, int *l_errnop);

/* Conversion routines */
fpcfga_ret_t make_xport_logid(const char *xport_phys, char **xport_logpp,
    int *l_errnop);
fpcfga_ret_t dyn_apid_to_path(const char *xport_phys, const char *dyncomp,
        struct luninfo_list **lunlistpp, int *l_errnop);
void cvt_lawwn_to_dyncomp(const la_wwn_t *pwwn, char **dyncomp, int *l_errnop);
int cvt_dyncomp_to_lawwn(const char *dyncomp, la_wwn_t *port_wwn);
fpcfga_ret_t make_dyncomp_from_dinode(const di_node_t node, char **dyncompp,
        int *l_errnop);
fpcfga_ret_t make_portwwn_luncomp_from_dinode(const di_node_t node,
        char **dyncompp, int **luncompp, int *l_errnop);
fpcfga_ret_t make_portwwn_luncomp_from_pinode(const di_path_t pinode,
        char **dyncompp, int **luncompp, int *l_errnop);
fpcfga_ret_t construct_nodepath_from_dinode(const di_node_t node,
        char **node_pathp, int *l_errnop);
u_longlong_t wwnConversion(uchar_t *wwn);


/* Functions in cfga_rcm.c */
fpcfga_ret_t fp_rcm_offline(char *, char **, cfga_flags_t);
fpcfga_ret_t fp_rcm_online(char *, char **, cfga_flags_t);
fpcfga_ret_t fp_rcm_remove(char *, char **, cfga_flags_t);
fpcfga_ret_t fp_rcm_suspend(char *, char *, char **, cfga_flags_t);
fpcfga_ret_t fp_rcm_resume(char *, char *, char **, cfga_flags_t);
fpcfga_ret_t fp_rcm_info(char *, char **, char **);

/* Utility routines */
fpcfga_ret_t physpath_to_devlink(const char *basedir, char *xport_phys,
    char **xport_logpp, int *l_errnop, int match_minor);
fpcfga_ret_t recurse_dev(const char *basedir, void *arg,
    fpcfga_recur_t (*fcn)(const char *lpath, void *arg));
fpcfga_ret_t apidt_create(const char *ap_id, apid_t *apidp,
    char **errstring);
void apidt_free(apid_t *apidp);
cfga_err_t err_cvt(fpcfga_ret_t err);
void list_free(ldata_list_t **llpp);
int known_state(di_node_t node);

fpcfga_ret_t devctl_cmd(const char *ap_id, fpcfga_cmd_t cmd,
    uint_t *statep, int *l_errnop);
fpcfga_ret_t invoke_cmd(const char *func, apid_t *apidt, prompt_t *prp,
    char **errstring);

void cfga_err(char **errstring, int use_errno, ...);
void cfga_msg(struct cfga_msg *msgp, ...);
char *cfga_str(int append_newline, ...);
int msg_idx(msgid_t msgid);
fpcfga_ret_t walk_tree(const char *physpath, void *arg, uint_t init_flags,
    walkarg_t *up, fpcfga_cmd_t cmd, int *l_errnop);
int hba_dev_cmp(const char *hba, const char *dev);
int dev_cmp(const char *dev1, const char *dev2, int match_minor);
char *pathdup(const char *path, int *l_errnop);
int getPortAttrsByWWN(HBA_HANDLE handle, HBA_WWN wwn,
        HBA_PORTATTRIBUTES *attrs);
int getDiscPortAttrs(HBA_HANDLE handle, int portIndex,
        int discIndex, HBA_PORTATTRIBUTES *attrs);
int getAdapterPortAttrs(HBA_HANDLE handle, int portIndex,
        HBA_PORTATTRIBUTES *attrs);
int getAdapterAttrs(HBA_HANDLE handle, HBA_ADAPTERATTRIBUTES *attrs);
fpcfga_ret_t findMatchingAdapterPort(char *portPath,
        HBA_HANDLE *matchingHandle, int *matchingPortIndex,
        HBA_PORTATTRIBUTES *matchingPortAttrs, char **errstring);

extern msgcvt_t str_tbl[];

#ifdef __cplusplus
}
#endif

#endif /* _CFGA_FP_H */