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/*

 * atari_scsi.h -- Header file for the Atari native SCSI driver

 *

 * Copyright 1994 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>

 *

 * (Loosely based on the work of Robert De Vries' team)

 *

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file COPYING in the main directory of this archive

 * for more details.

 *

 */

#ifndef ATARI_SCSI_H

#define ATARI_SCSI_H

/* (I_HAVE_OVERRUNS stuff removed) */

#ifndef ASM

int atari_scsi_abort (Scsi_Cmnd *);

int atari_scsi_detect (Scsi_Host_Template *);

const char *atari_scsi_info (struct Scsi_Host *);

int atari_scsi_queue_command (Scsi_Cmnd *, void (*done) (Scsi_Cmnd *));

int atari_scsi_reset (Scsi_Cmnd *, unsigned int);

int atari_scsi_proc_info (char *, char **, off_t, int, int, int);

#ifdef MODULE

int atari_scsi_release (struct Scsi_Host *);

#else

#define atari_scsi_release NULL

#endif

/* The values for CMD_PER_LUN and CAN_QUEUE are somehow arbitrary. Higher

 * values should work, too; try it! (but cmd_per_lun costs memory!) */

/* But there seems to be a bug somewhere that requires CAN_QUEUE to be

 * 2*CMD_OER_LUN. At least on a TT, no spurious timeouts seen since

 * changed CMD_PER_LUN... */

/* Note: The Falcon currently uses 8/1 setting due to unsolved problems with

 * cmd_per_lun != 1 */

#define ATARI_TT_CAN_QUEUE              16

#define ATARI_TT_CMD_PER_LUN            8

#define ATARI_TT_SG_TABLESIZE           SG_ALL

#define ATARI_FALCON_CAN_QUEUE          8

#define ATARI_FALCON_CMD_PER_LUN        1

#define ATARI_FALCON_SG_TABLESIZE       SG_NONE

#define DEFAULT_USE_TAGGED_QUEUING      0

#if defined (HOSTS_C) || defined (MODULE)

#define ATARI_SCSI { NULL, NULL, NULL,                          \

  atari_scsi_proc_info,                                         \

  "Atari native SCSI",                                          \

  atari_scsi_detect,                                            \

  atari_scsi_release,                                           \

  atari_scsi_info,                                              \

  /* command */ NULL,                                           \

  atari_scsi_queue_command,                                     \

  atari_scsi_abort,                                             \

  atari_scsi_reset,                                             \

  /* slave_attach */    NULL,                                   \

  /* bios_param */      NULL,                                   \

  /* can queue */       0, /* initialized at run-time */ \

  /* host_id */         0, /* initialized at run-time */ \

  /* scatter gather */  0, /* initialized at run-time */ \

  /* cmd per lun */     0, /* initialized at run-time */ \

  /* present */         0,                                       \

  /* unchecked ISA DMA */ 0,                                     \

  /* use_clustering */  DISABLE_CLUSTERING }

#endif

#ifndef HOSTS_C

#define NCR5380_implementation_fields   /* none */

#define NCR5380_read(reg)                 atari_scsi_reg_read( reg )

#define NCR5380_write(reg, value) atari_scsi_reg_write( reg, value )

#define NCR5380_intr atari_scsi_intr

#define NCR5380_queue_command atari_scsi_queue_command

#define NCR5380_abort atari_scsi_abort

#define NCR5380_proc_info atari_scsi_proc_info

#define NCR5380_dma_read_setup(inst,d,c) atari_scsi_dma_setup (inst, d, c, 0)

#define NCR5380_dma_write_setup(inst,d,c) atari_scsi_dma_setup (inst, d, c, 1)

#define NCR5380_dma_residual(inst) atari_scsi_dma_residual( inst )

#define NCR5380_dma_xfer_len(i,cmd,phase) \

        atari_dma_xfer_len(cmd->SCp.this_residual,cmd,((phase) & SR_IO) ? 0 : 1)

/* Debugging printk definitions:

 * DPRINTK() is the generic one, takes an NDEBUG_* mask as argument;

 * all others are hardcoded to one NDEBUG_* code:

 *

 *  ARB  -> arbitration

 *  ASEN -> auto-sense

 *  DMA  -> DMA

 *  HSH  -> PIO handshake

 *  INF  -> information transfer

 *  INI  -> initialization

 *  INT  -> interrupt

 *  LNK  -> linked commands

 *  MAIN -> NCR5380_main() control flow

 *  NDAT -> no data-out phase

 *  NWR  -> no write commands

 *  PIO  -> PIO transfers

 *  PDMA -> pseudo DMA (unused on Atari)

 *  QU   -> queues

 *  RSL  -> reselections

 *  SEL  -> selections

 *  USL  -> usleep cpde (unused on Atari)

 *  LBS  -> last byte sent (unused on Atari)

 *  RSS  -> restarting of selections

 *  EXT  -> extended messages

 *  ABRT -> aborting and resetting

 *  TAG  -> queue tag handling

 *  MER  -> merging of consec. buffers

 *

 */

#define DPRINTK(mask, format, args...)                          \

        do {                                                    \

                if (NDEBUG & (mask))                            \

                        printk(KERN_DEBUG format , ## args);    \

        } while(0)

#define ARB_PRINTK(format, args...) \

        DPRINTK(NDEBUG_ARBITRATION, format , ##args)

#define ASEN_PRINTK(format, args...) \

        DPRINTK(NDEBUG_AUTOSENSE, format , ##args)

#define DMA_PRINTK(format, args...) \

        DPRINTK(NDEBUG_DMA, format , ##args)

#define HSH_PRINTK(format, args...) \

        DPRINTK(NDEBUG_HANDSHAKE, format , ##args)

#define INF_PRINTK(format, args...) \

        DPRINTK(NDEBUG_INFORMATION, format , ##args)

#define INI_PRINTK(format, args...) \

        DPRINTK(NDEBUG_INIT, format , ##args)

#define INT_PRINTK(format, args...) \

        DPRINTK(NDEBUG_INTR, format , ##args)

#define LNK_PRINTK(format, args...) \

        DPRINTK(NDEBUG_LINKED, format , ##args)

#define MAIN_PRINTK(format, args...) \

        DPRINTK(NDEBUG_MAIN, format , ##args)

#define NDAT_PRINTK(format, args...) \

        DPRINTK(NDEBUG_NO_DATAOUT, format , ##args)

#define NWR_PRINTK(format, args...) \

        DPRINTK(NDEBUG_NO_WRITE, format , ##args)

#define PIO_PRINTK(format, args...) \

        DPRINTK(NDEBUG_PIO, format , ##args)

#define PDMA_PRINTK(format, args...) \

        DPRINTK(NDEBUG_PSEUDO_DMA, format , ##args)

#define QU_PRINTK(format, args...) \

        DPRINTK(NDEBUG_QUEUES, format , ##args)

#define RSL_PRINTK(format, args...) \

        DPRINTK(NDEBUG_RESELECTION, format , ##args)

#define SEL_PRINTK(format, args...) \

        DPRINTK(NDEBUG_SELECTION, format , ##args)

#define USL_PRINTK(format, args...) \

        DPRINTK(NDEBUG_USLEEP, format , ##args)

#define LBS_PRINTK(format, args...) \

        DPRINTK(NDEBUG_LAST_BYTE_SENT, format , ##args)

#define RSS_PRINTK(format, args...) \

        DPRINTK(NDEBUG_RESTART_SELECT, format , ##args)

#define EXT_PRINTK(format, args...) \

        DPRINTK(NDEBUG_EXTENDED, format , ##args)

#define ABRT_PRINTK(format, args...) \

        DPRINTK(NDEBUG_ABORT, format , ##args)

#define TAG_PRINTK(format, args...) \

        DPRINTK(NDEBUG_TAGS, format , ##args)

#define MER_PRINTK(format, args...) \

        DPRINTK(NDEBUG_MERGING, format , ##args)

/* conditional macros for NCR5380_print_{,phase,status} */

#define NCR_PRINT(mask) \

        ((NDEBUG & (mask)) ? NCR5380_print(instance) : (void)0)

#define NCR_PRINT_PHASE(mask) \

        ((NDEBUG & (mask)) ? NCR5380_print_phase(instance) : (void)0)

#define NCR_PRINT_STATUS(mask) \

        ((NDEBUG & (mask)) ? NCR5380_print_status(instance) : (void)0)

#define NDEBUG_ANY      0xffffffff

#endif /* else def HOSTS_C */

#endif /* ndef ASM */

#endif /* ATARI_SCSI_H */