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Diffstat (limited to 'drivers/scsi/atari_scsi.h')
| -rw-r--r-- | drivers/scsi/atari_scsi.h | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/drivers/scsi/atari_scsi.h b/drivers/scsi/atari_scsi.h new file mode 100644 index 00000000..efadb8d5 --- /dev/null +++ b/drivers/scsi/atari_scsi.h @@ -0,0 +1,184 @@ +/* + * 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_detect (struct scsi_host_template *); +const char *atari_scsi_info (struct Scsi_Host *); +int atari_scsi_reset (Scsi_Cmnd *, unsigned int); +int atari_scsi_release (struct Scsi_Host *); + +/* 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_PER_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 + + +#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) + +/* former generic SCSI error handling stuff */ + +#define SCSI_ABORT_SNOOZE 0 +#define SCSI_ABORT_SUCCESS 1 +#define SCSI_ABORT_PENDING 2 +#define SCSI_ABORT_BUSY 3 +#define SCSI_ABORT_NOT_RUNNING 4 +#define SCSI_ABORT_ERROR 5 + +#define SCSI_RESET_SNOOZE 0 +#define SCSI_RESET_PUNT 1 +#define SCSI_RESET_SUCCESS 2 +#define SCSI_RESET_PENDING 3 +#define SCSI_RESET_WAKEUP 4 +#define SCSI_RESET_NOT_RUNNING 5 +#define SCSI_RESET_ERROR 6 + +#define SCSI_RESET_SYNCHRONOUS 0x01 +#define SCSI_RESET_ASYNCHRONOUS 0x02 +#define SCSI_RESET_SUGGEST_BUS_RESET 0x04 +#define SCSI_RESET_SUGGEST_HOST_RESET 0x08 + +#define SCSI_RESET_BUS_RESET 0x100 +#define SCSI_RESET_HOST_RESET 0x200 +#define SCSI_RESET_ACTION 0xff + +/* Debugging printk definitions: + * + * 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 dprint(flg, format...) \ +({ \ + if (NDEBUG & (flg)) \ + printk(KERN_DEBUG format); \ +}) + +#define ARB_PRINTK(format, args...) \ + dprint(NDEBUG_ARBITRATION, format , ## args) +#define ASEN_PRINTK(format, args...) \ + dprint(NDEBUG_AUTOSENSE, format , ## args) +#define DMA_PRINTK(format, args...) \ + dprint(NDEBUG_DMA, format , ## args) +#define HSH_PRINTK(format, args...) \ + dprint(NDEBUG_HANDSHAKE, format , ## args) +#define INF_PRINTK(format, args...) \ + dprint(NDEBUG_INFORMATION, format , ## args) +#define INI_PRINTK(format, args...) \ + dprint(NDEBUG_INIT, format , ## args) +#define INT_PRINTK(format, args...) \ + dprint(NDEBUG_INTR, format , ## args) +#define LNK_PRINTK(format, args...) \ + dprint(NDEBUG_LINKED, format , ## args) +#define MAIN_PRINTK(format, args...) \ + dprint(NDEBUG_MAIN, format , ## args) +#define NDAT_PRINTK(format, args...) \ + dprint(NDEBUG_NO_DATAOUT, format , ## args) +#define NWR_PRINTK(format, args...) \ + dprint(NDEBUG_NO_WRITE, format , ## args) +#define PIO_PRINTK(format, args...) \ + dprint(NDEBUG_PIO, format , ## args) +#define PDMA_PRINTK(format, args...) \ + dprint(NDEBUG_PSEUDO_DMA, format , ## args) +#define QU_PRINTK(format, args...) \ + dprint(NDEBUG_QUEUES, format , ## args) +#define RSL_PRINTK(format, args...) \ + dprint(NDEBUG_RESELECTION, format , ## args) +#define SEL_PRINTK(format, args...) \ + dprint(NDEBUG_SELECTION, format , ## args) +#define USL_PRINTK(format, args...) \ + dprint(NDEBUG_USLEEP, format , ## args) +#define LBS_PRINTK(format, args...) \ + dprint(NDEBUG_LAST_BYTE_SENT, format , ## args) +#define RSS_PRINTK(format, args...) \ + dprint(NDEBUG_RESTART_SELECT, format , ## args) +#define EXT_PRINTK(format, args...) \ + dprint(NDEBUG_EXTENDED, format , ## args) +#define ABRT_PRINTK(format, args...) \ + dprint(NDEBUG_ABORT, format , ## args) +#define TAG_PRINTK(format, args...) \ + dprint(NDEBUG_TAGS, format , ## args) +#define MER_PRINTK(format, args...) \ + dprint(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) + + +#endif /* ndef ASM */ +#endif /* ATARI_SCSI_H */ + + |