sim_disk.h

/* sim_disk.h: simulator disk support library definitions

   Copyright (c) 2011, Mark Pizzolato

   Permission is hereby granted, free of charge, to any person obtaining a
   copy of this software and associated documentation files (the "Software"),
   to deal in the Software without restriction, including without limitation
   the rights to use, copy, modify, merge, publish, distribute, sublicense,
   and/or sell copies of the Software, and to permit persons to whom the
   Software is furnished to do so, subject to the following conditions:

   The above copyright notice and this permission notice shall be included in
   all copies or substantial portions of the Software.

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
   IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

   Except as contained in this notice, the names of Robert M Supnik and 
   Mark Pizzolato shall not be used in advertising or otherwise to promote
   the sale, use or other dealings in this Software without prior written 
   authorization from Robert M Supnik and Mark Pizzolato.

   25-Jan-11    MP      Initial Implemementation
*/

#ifndef _SIM_DISK_H_
#define _SIM_DISK_H_    0

/* SIMH/Disk format */

typedef uint32          t_seccnt;                       /* disk sector count */
typedef uint32          t_lba;                          /* disk logical block address */

/* Unit flags */

#define DKUF_V_WLK      (UNIT_V_UF + 12)                /* write locked */
#define DKUF_V_FMT      (UNIT_V_UF + 13)                /* disk file format */
#define DKUF_W_FMT      3                               /* 3b of formats */
#define DKUF_N_FMT      (1u << DKUF_W_FMT)              /* number of formats */
#define DKUF_M_FMT      ((1u << DKUF_W_FMT) - 1)
#define DKUF_F_STD       0                              /* SIMH format */
#define DKUF_F_RAW       1                              /* Raw Physical Disk Access */
#define DKUF_F_VHD       2                              /* VHD format */
#define DKUF_V_UF       (DKUF_V_FMT + DKUF_W_FMT)
#define DKUF_WLK        (1u << DKUF_V_WLK)
#define DKUF_FMT        (DKUF_M_FMT << DKUF_V_FMT)
#define DKUF_WRP        (DKUF_WLK | UNIT_RO)

#define DK_F_STD        (DKUF_F_STD << DKUF_V_FMT)
#define DK_F_RAW        (DKUF_F_RAW << DKUF_V_FMT)
#define DK_F_VHD        (DKUF_F_VHD << DKUF_V_FMT)

#define DK_GET_FMT(u)   (((u)->flags >> DKUF_V_FMT) & DKUF_M_FMT)

/* Return status codes */

#define DKSE_OK         0                               /* no error */

typedef void (*DISK_PCALLBACK)(UNIT *unit, t_stat status);

/* Prototypes */

t_stat sim_disk_attach (UNIT *uptr, char *cptr, size_t sector_size, size_t xfer_element_size, t_bool dontautosize, 
                        uint32 debugbit, const char *drivetype, uint32 pdp11_tracksize, int completion_delay);
t_stat sim_disk_detach (UNIT *uptr);
t_stat sim_disk_rdsect (UNIT *uptr, t_lba lba, uint8 *buf, t_seccnt *sectsread, t_seccnt sects);
t_stat sim_disk_rdsect_a (UNIT *uptr, t_lba lba, uint8 *buf, t_seccnt *sectsread, t_seccnt sects, DISK_PCALLBACK callback);
t_stat sim_disk_wrsect (UNIT *uptr, t_lba lba, uint8 *buf, t_seccnt *sectswritten, t_seccnt sects);
t_stat sim_disk_wrsect_a (UNIT *uptr, t_lba lba, uint8 *buf, t_seccnt *sectswritten, t_seccnt sects, DISK_PCALLBACK callback);
t_stat sim_disk_unload (UNIT *uptr);
t_stat sim_disk_set_fmt (UNIT *uptr, int32 val, char *cptr, void *desc);
t_stat sim_disk_show_fmt (FILE *st, UNIT *uptr, int32 val, void *desc);
t_stat sim_disk_set_capac (UNIT *uptr, int32 val, char *cptr, void *desc);
t_stat sim_disk_show_capac (FILE *st, UNIT *uptr, int32 val, void *desc);
t_stat sim_disk_set_asynch (UNIT *uptr, int latency);
t_stat sim_disk_clr_asynch (UNIT *uptr);
t_bool sim_disk_isavailable (UNIT *uptr);
t_bool sim_disk_isavailable_a (UNIT *uptr, DISK_PCALLBACK callback);
t_bool sim_disk_wrp (UNIT *uptr);
t_addr sim_disk_size (UNIT *uptr);
void sim_disk_data_trace (UNIT *uptr, const uint8 *data, size_t lba, size_t len, const char* txt, int detail, uint32 reason);

#endif