diff options
author | Theo de Raadt <deraadt@cvs.openbsd.org> | 1995-11-19 13:51:30 +0000 |
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committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 1995-11-19 13:51:30 +0000 |
commit | 05fbfd3fbd35377bde4ecdca4d889dc901831995 (patch) | |
tree | 1712b8592394ed8b2b4f71b2aba236faf0b49f58 /sys/arch/sun3/dev/ncr5380var.h | |
parent | 4615e512f59307515bfe2b6ddf443963995f3a55 (diff) |
from netbsd:
Latest, greatest version of the new NCR driver.
DMA works! Interrupts work! Disconnect/reselect works!
To be paranoid, leave that all disabled for now...
Diffstat (limited to 'sys/arch/sun3/dev/ncr5380var.h')
-rw-r--r-- | sys/arch/sun3/dev/ncr5380var.h | 81 |
1 files changed, 48 insertions, 33 deletions
diff --git a/sys/arch/sun3/dev/ncr5380var.h b/sys/arch/sun3/dev/ncr5380var.h index 1c27eccd0f3..1ae35b4d58b 100644 --- a/sys/arch/sun3/dev/ncr5380var.h +++ b/sys/arch/sun3/dev/ncr5380var.h @@ -1,4 +1,4 @@ -/* $NetBSD: ncr5380var.h,v 1.1 1995/10/29 21:19:10 gwr Exp $ */ +/* $NetBSD: ncr5380var.h,v 1.1.2.1 1995/11/18 07:08:41 gwr Exp $ */ /* * Copyright (c) 1995 David Jones, Gordon W. Ross @@ -40,48 +40,54 @@ #define SCI_CLR_INTR(sc) (*(sc)->sci_iack) #define SCI_BUSY(sc) (*sc->sci_bus_csr & SCI_BUS_BSY) +/* These are NOT artibtrary, but map to bits in sci_tcmd */ #define PHASE_DATA_OUT 0x0 #define PHASE_DATA_IN 0x1 -#define PHASE_CMD 0x2 +#define PHASE_COMMAND 0x2 #define PHASE_STATUS 0x3 #define PHASE_UNSPEC1 0x4 #define PHASE_UNSPEC2 0x5 #define PHASE_MSG_OUT 0x6 #define PHASE_MSG_IN 0x7 -#define PHASE_INVALID -1 +/* + * This illegal phase is used to prevent the 5380 from having + * a phase-match condition when we don't want one, such as + * when setting up the DMA engine or whatever... + */ +#define PHASE_INVALID PHASE_UNSPEC1 -#define SCSI_PHASE(x) ((x)&0x7) /* Per-request state. This is required in order to support reselection. */ struct sci_req { struct scsi_xfer *sr_xs; /* Pointer to xfer struct, NULL=unused */ int sr_target, sr_lun; /* For fast access */ void *sr_dma_hand; /* Current DMA hnadle */ - u_char *sr_data; /* Saved data pointer */ + u_char *sr_dataptr; /* Saved data pointer */ int sr_datalen; int sr_flags; /* Internal error code */ #define SR_IMMED 1 /* Immediate command */ #define SR_SENSE 2 /* We are getting sense */ -#define SR_ERROR 4 /* Error occurred */ +#define SR_OVERDUE 4 /* Timeout while not current */ +#define SR_ERROR 8 /* Error occurred */ int sr_status; /* Status code from last cmd */ }; -#define SCI_OPENINGS 4 /* Up to 4 commands at once */ +#define SCI_OPENINGS 16 /* How many commands we can enqueue. */ struct ncr5380_softc { struct device sc_dev; struct scsi_link sc_link; - /* Pointers to 5380 registers. MD code must set these up. */ - volatile u_char *sci_data; - volatile u_char *sci_icmd; - volatile u_char *sci_mode; - volatile u_char *sci_tcmd; - volatile u_char *sci_bus_csr; - volatile u_char *sci_csr; - volatile u_char *sci_idata; - volatile u_char *sci_iack; + /* Pointers to 5380 registers. See ncr5380reg.h */ + volatile u_char *sci_r0; + volatile u_char *sci_r1; + volatile u_char *sci_r2; + volatile u_char *sci_r3; + volatile u_char *sci_r4; + volatile u_char *sci_r5; + volatile u_char *sci_r6; + volatile u_char *sci_r7; /* Functions set from MD code */ int (*sc_pio_out) __P((struct ncr5380_softc *, @@ -90,35 +96,40 @@ struct ncr5380_softc { int, int, u_char *)); void (*sc_dma_alloc) __P((struct ncr5380_softc *)); void (*sc_dma_free) __P((struct ncr5380_softc *)); + + void (*sc_dma_setup) __P((struct ncr5380_softc *)); void (*sc_dma_start) __P((struct ncr5380_softc *)); void (*sc_dma_poll) __P((struct ncr5380_softc *)); void (*sc_dma_eop) __P((struct ncr5380_softc *)); void (*sc_dma_stop) __P((struct ncr5380_softc *)); + void (*sc_intr_on) __P((struct ncr5380_softc *)); + void (*sc_intr_off) __P((struct ncr5380_softc *)); + int sc_flags; /* Misc. flags and capabilities */ #define NCR5380_PERMIT_RESELECT 1 /* Allow disconnect/reselect */ +#define NCR5380_FORCE_POLLING 2 /* Do not use interrupts. */ int sc_min_dma_len; /* Smaller than this is done with PIO */ /* Begin MI shared data */ - /* Active data pointer for current SCSI process */ + int sc_state; +#define NCR_IDLE 0 /* Ready for new work. */ +#define NCR_WORKING 0x01 /* Some command is in progress. */ +#define NCR_ABORTING 0x02 /* Bailing out */ +#define NCR_DOINGDMA 0x04 /* The FIFO data path is active! */ +#define NCR_DROP_MSGIN 0x10 /* Discard all msgs (parity err detected) */ + + /* The request that has the bus now. */ + struct sci_req *sc_current; + + /* Active data pointer for current SCSI command. */ u_char *sc_dataptr; int sc_datalen; - void *sc_dma_hand; /* DMA handle */ - u_int sc_dma_flags; -#define DMA5380_INPROGRESS 1 /* MD: DMA is curently in progress */ -#define DMA5380_WRITE 2 /* MI: DMA is to output to SCSI */ -#define DMA5380_POLL 4 /* MI: Poll for DMA completion */ -#define DMA5380_ERROR 8 /* MD: DMA operation failed */ -#define DMA5380_PHYS 16 /* MI: Buffer has B_PHYS set */ - /* Begin MI private data */ - /* The request that has the bus now. */ - struct sci_req *sc_current; - /* The number of operations in progress on the bus */ volatile int sc_ncmds; @@ -131,10 +142,7 @@ struct ncr5380_softc { /* Message stuff */ int sc_prevphase; - int sc_msg_flags; -#define NCR_DROP_MSGIN 1 -#define NCR_ABORTING 2 -#define NCR_NEED_RESET 4 + u_int sc_msgpriq; /* Messages we want to send */ u_int sc_msgoutq; /* Messages sent during last MESSAGE OUT */ u_int sc_msgout; /* Message last transmitted */ @@ -156,8 +164,15 @@ struct ncr5380_softc { void ncr5380_init __P((struct ncr5380_softc *)); void ncr5380_reset_scsibus __P((struct ncr5380_softc *)); -int ncr5380_sbc_intr __P((struct ncr5380_softc *)); +int ncr5380_intr __P((struct ncr5380_softc *)); int ncr5380_scsi_cmd __P((struct scsi_xfer *)); int ncr5380_pio_in __P((struct ncr5380_softc *, int, int, u_char *)); int ncr5380_pio_out __P((struct ncr5380_softc *, int, int, u_char *)); +#ifdef DEBUG +struct ncr5380_softc *ncr5380_debug_sc; +void ncr5380_trace __P((char *msg, long val)); +#define NCR_TRACE(msg, val) ncr5380_trace(msg, val) +#else +#define NCR_TRACE(msg, val) /* nada */ +#endif |