gdth.h

GNU Mach 微内核源代码, 基于美国卡内基美隆大学的 Mach 研究项目

    unchar              control0;               /* control0 register(unused) */
    unchar              control1;               /* board interrupts enable */
    unchar              unused6[0x16];
} gdt6c_plx_regs;

/* DPRAM new PCI controllers */
typedef struct {
    union {
        gdt_dpr_if      ic;                     /* interface area */
        unchar          if_area[0x4000-sizeof(gdt_pci_sram)];
    } u;
    gdt_pci_sram        gdt6sr;                 /* SRAM structure */
} gdt6c_dpram_str;

/* i960 register structure (PCI MPR controllers) */
typedef struct {
    unchar              unused1[16];
    unchar volatile     sema0_reg;              /* command semaphore */
    unchar              unused2;
    unchar volatile     sema1_reg;              /* status semaphore */
    unchar              unused3;
    ushort volatile     status;                 /* command status */
    ushort              service;                /* service */
    ulong               info[2];                /* additional info */
    unchar              ldoor_reg;              /* PCI to local doorbell */
    unchar              unused4[11];
    unchar volatile     edoor_reg;              /* local to PCI doorbell */
    unchar              unused5[7];
    unchar              edoor_en_reg;           /* board interrupts enable */
    unchar              unused6[27];
    ulong               unused7[1004];          /* size: 4 KB */
} gdt6m_i960_regs;

/* DPRAM PCI MPR controllers */
typedef struct {
    gdt6m_i960_regs     i960r;                  /* 4KB i960 registers */
    union {
        gdt_dpr_if      ic;                     /* interface area */
        unchar          if_area[0x3000-sizeof(gdt_pci_sram)];
    } u;
    gdt_pci_sram        gdt6sr;                 /* SRAM structure */
} gdt6m_dpram_str;


/* PCI resources */
typedef struct {
    ushort      device_id;                      /* device ID (0,..,9) */
    unchar      bus;                            /* PCI bus */
    unchar      device_fn;                      /* PCI device/function no. */
    ulong       dpmem;                          /* DPRAM address */
    ulong       io;                             /* IO address */
    ulong       io_mm;                          /* IO address mem. mapped */
    ulong       bios;                           /* BIOS address */
    unchar      irq;                            /* IRQ */
} gdth_pci_str;


/* controller information structure */
typedef struct {
    unchar              bus_cnt;                /* SCSI bus count */
    unchar              type;                   /* controller class */
    ushort              raw_feat;               /* feat. raw service (s/g,..) */
    ulong               stype;                  /* controller subtype */
    ushort              cache_feat;             /* feat. cache serv. (s/g,..) */
    ushort		bmic;			/* BMIC address (EISA) */
    void               	*brd;	                /* DPRAM address */
    ulong               brd_phys;               /* slot number/BIOS address */
    gdt6c_plx_regs      *plx;                   /* PLX regs (new PCI contr.) */
    gdth_cmd_str        *pccb;                  /* address command structure */
    gdth_scratch_str    *pscratch;
    unchar              irq;                    /* IRQ */
    unchar              drq;                    /* DRQ (ISA controllers) */
    ushort              status;                 /* command status */
    ulong               info;
    ulong               info2;                  /* additional info */
    Scsi_Cmnd           *req_first;             /* top of request queue */
    struct {
        unchar          type;                   /* device type */
        unchar          heads;                  /* mapping */
        unchar          secs;
        unchar          lock;                   /* drive locked ? (hot plug) */
        ushort          hostdrive;              /* host drive number */
        ushort          devtype;                /* further information */
        ulong           size;                   /* capacity */
    } id[MAXBUS][MAXID];         
    ushort              cmd_cnt;                /* command count in DPRAM */
    ushort              cmd_len;                /* length of actual command */
    ushort              cmd_offs_dpmem;         /* actual offset in DPRAM */
    ushort              ic_all_size;            /* sizeof DPRAM interf. area */
    unchar              reserved;
    unchar              mode;                   /* information from /proc */
    ushort              param_size;
    gdth_cpar_str       cpar;                   /* controller cache par. */
    char		ctr_name[16];		/* controller name */
} gdth_ha_str;

/* structure for scsi_register(), SCSI bus != 0 */
typedef struct {
    ushort      hanum;
    ushort      busnum;
} gdth_num_str;

/* structure for scsi_register() */
typedef struct {
    gdth_num_str        numext;                 /* must be the first element */
    gdth_ha_str         haext;
    gdth_cmd_str        cmdext;
    gdth_scratch_str    dmaext;
} gdth_ext_str;


/* INQUIRY data format */
typedef struct {
    unchar      type_qual;
    unchar      modif_rmb;
    unchar      version;
    unchar      resp_aenc;
    unchar      add_length;
    unchar      reserved1;
    unchar      reserved2;
    unchar      misc;
    unchar      vendor[8];
    unchar      product[16];
    unchar      revision[4];
} gdth_inq_data;

/* READ_CAPACITY data format */
typedef struct {
    ulong       last_block_no;
    ulong       block_length;
} gdth_rdcap_data;

/* REQUEST_SENSE data format */
typedef struct {
    unchar      errorcode;
    unchar      segno;
    unchar      key;
    ulong       info;
    unchar      add_length;
    ulong       cmd_info;
    unchar      adsc;
    unchar      adsq;
    unchar      fruc;
    unchar      key_spec[3];
} gdth_sense_data;

/* MODE_SENSE data format */
typedef struct {
    struct {
        unchar  data_length;
        unchar  med_type;
        unchar  dev_par;
        unchar  bd_length;
    } hd;
    struct {
        unchar  dens_code;
        unchar  block_count[3];
        unchar  reserved;
        unchar  block_length[3];
    } bd;
} gdth_modep_data;

/* stack frame */
typedef struct {
    ulong       b[10];                          /* 32 bit compiler ! */
} gdth_stackframe;

#pragma pack()


/* data structure for reserve drives */
typedef struct {
    unchar	hanum;				
    unchar	bus;
    unchar	id;
} gdth_reserve_str;


/* function prototyping */

int gdth_detect(Scsi_Host_Template *);
int gdth_release(struct Scsi_Host *);
int gdth_command(Scsi_Cmnd *);
int gdth_queuecommand(Scsi_Cmnd *,void (*done)(Scsi_Cmnd *));
int gdth_abort(Scsi_Cmnd *);
#if LINUX_VERSION_CODE >= 0x010346
int gdth_reset(Scsi_Cmnd *, unsigned int reset_flags);
#else
int gdth_reset(Scsi_Cmnd *);
#endif
const char *gdth_info(struct Scsi_Host *);

#if LINUX_VERSION_CODE >= 0x02015F
int gdth_bios_param(Disk *,kdev_t,int *);
extern struct proc_dir_entry proc_scsi_gdth;
int gdth_proc_info(char *,char **,off_t,int,int,int);
int gdth_eh_abort(Scsi_Cmnd *scp);
int gdth_eh_device_reset(Scsi_Cmnd *scp);
int gdth_eh_bus_reset(Scsi_Cmnd *scp);
int gdth_eh_host_reset(Scsi_Cmnd *scp);
#define GDTH { proc_dir:        &proc_scsi_gdth,                 \
               proc_info:       gdth_proc_info,                  \
               name:            "GDT SCSI Disk Array Controller",\
               detect:          gdth_detect,                     \
               release:         gdth_release,                    \
               info:            gdth_info,                       \
               command:         gdth_command,                    \
               queuecommand:    gdth_queuecommand,               \
               eh_abort_handler: gdth_eh_abort,                  \
               eh_device_reset_handler: gdth_eh_device_reset,    \
               eh_bus_reset_handler: gdth_eh_bus_reset,          \
               eh_host_reset_handler: gdth_eh_host_reset,        \
               abort:           gdth_abort,                      \
               reset:           gdth_reset,                      \
               bios_param:      gdth_bios_param,                 \
               can_queue:       GDTH_MAXCMDS,                    \
               this_id:         -1,                              \
               sg_tablesize:    GDTH_MAXSG,                      \
               cmd_per_lun:     GDTH_MAXC_P_L,                   \
               present:         0,                               \
               unchecked_isa_dma: 1,                             \
               use_clustering:  ENABLE_CLUSTERING,               \
               use_new_eh_code: 1       /* use new error code */ }    
#elif LINUX_VERSION_CODE >= 0x010300
int gdth_bios_param(Disk *,kdev_t,int *);
extern struct proc_dir_entry proc_scsi_gdth;
int gdth_proc_info(char *,char **,off_t,int,int,int);
#define GDTH { NULL, NULL,                              \
                   &proc_scsi_gdth,                     \
                   gdth_proc_info,                      \
                   "GDT SCSI Disk Array Controller",    \
                   gdth_detect,                         \
                   gdth_release,                        \
                   gdth_info,                           \
                   gdth_command,                        \
                   gdth_queuecommand,                   \
                   gdth_abort,                          \
                   gdth_reset,                          \
                   NULL,                                \
                   gdth_bios_param,                     \
                   GDTH_MAXCMDS,                        \
                   -1,                                  \
                   GDTH_MAXSG,                          \
                   GDTH_MAXC_P_L,                       \
                   0,                                   \
                   1,                                   \
                   ENABLE_CLUSTERING}
#else
int gdth_bios_param(Disk *,int,int *);
#define GDTH { NULL, NULL,                              \
                   "GDT SCSI Disk Array Controller",    \
                   gdth_detect,                         \
                   gdth_release,                        \
                   gdth_info,                           \
                   gdth_command,                        \
                   gdth_queuecommand,                   \
                   gdth_abort,                          \
                   gdth_reset,                          \
                   NULL,                                \
                   gdth_bios_param,                     \
                   GDTH_MAXCMDS,                        \
                   -1,                                  \
                   GDTH_MAXSG,                          \
                   GDTH_MAXC_P_L,                       \
                   0,                                   \
                   1,                                   \
                   ENABLE_CLUSTERING}
#endif

#endif