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/* $OpenBSD: siopvar_common.h,v 1.29 2011/04/05 22:37:39 dlg Exp $ */
/* $NetBSD: siopvar_common.h,v 1.33 2005/11/18 23:10:32 bouyer Exp $ */
/*
* Copyright (c) 2000 Manuel Bouyer.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/* common struct and routines used by siop and esiop */
#ifndef SIOP_DEFAULT_TARGET
#define SIOP_DEFAULT_TARGET 7
#endif
/* tables used by SCRIPT */
typedef struct scr_table {
u_int32_t count;
u_int32_t addr;
} __packed scr_table_t;
/* Number of scatter/gather entries */
/* XXX Ensure alignment of siop_xfer's. */
#define SIOP_NSG 17 /* XXX (MAXPHYS/PAGE_SIZE + 1) */
#define SIOP_MAXFER ((SIOP_NSG - 1) * PAGE_SIZE)
/*
* This structure interfaces the SCRIPT with the driver; it describes a full
* transfer. If you change something here, don't forget to update offsets in
* {s,es}iop.ss
*/
struct siop_common_xfer {
u_int8_t msg_out[16]; /* 0 */
u_int8_t msg_in[16]; /* 16 */
u_int32_t status; /* 32 */
u_int32_t pad1; /* 36 */
u_int32_t id; /* 40 */
struct scsi_generic xscmd; /* 44 */
scr_table_t t_msgin; /* 60 */
scr_table_t t_extmsgin; /* 68 */
scr_table_t t_extmsgdata; /* 76 */
scr_table_t t_msgout; /* 84 */
scr_table_t cmd; /* 92 */
scr_table_t t_status; /* 100 */
scr_table_t data[SIOP_NSG]; /* 108 */
} __packed;
/* status can hold the SCSI_* status values, and 2 additional values: */
#define SCSI_SIOP_NOCHECK 0xfe /* don't check the scsi status */
#define SCSI_SIOP_NOSTATUS 0xff /* device didn't report status */
/* offset is initialised to SIOP_NOOFFSET, used to check if it was updated */
#define SIOP_NOOFFSET 0xffffffff
/*
* This describes a command handled by the SCSI controller
*/
struct siop_common_cmd {
struct siop_common_softc *siop_sc; /* points back to our adapter */
struct siop_common_target *siop_target; /* pointer to our target def */
struct scsi_xfer *xs; /* xfer from the upper level */
struct siop_common_xfer *siop_tables; /* tables for this cmd */
struct scsi_sense_data *sense;
bus_addr_t dsa; /* DSA value to load */
bus_dmamap_t dmamap_data;
int status;
int flags;
int tag; /* tag used for tagged command queuing */
int resid; /* valid when CMDFL_RESID is set */
};
/* status defs */
#define CMDST_FREE 0 /* cmd slot is free */
#define CMDST_READY 1 /* cmd slot is waiting for processing */
#define CMDST_ACTIVE 2 /* cmd slot is being processed */
#define CMDST_SENSE 3 /* cmd slot is requesting sense */
#define CMDST_SENSE_ACTIVE 4 /* request sense active */
#define CMDST_SENSE_DONE 5 /* request sense done */
#define CMDST_DONE 6 /* cmd slot has been processed */
/* flags defs */
#define CMDFL_TIMEOUT 0x0001 /* cmd timed out */
#define CMDFL_TAG 0x0002 /* tagged cmd */
#define CMDFL_RESID 0x0004 /* current offset in table is partial */
/* per-target struct */
struct siop_common_target {
int status; /* target status, see below */
int flags; /* target flags, see below */
u_int32_t id; /* for SELECT FROM */
int period;
int offset;
};
/* target status */
#define TARST_PROBING 0 /* target is being probed */
#define TARST_ASYNC 1 /* target needs sync/wide negotiation */
#define TARST_WIDE_NEG 2 /* target is doing wide negotiation */
#define TARST_SYNC_NEG 3 /* target is doing sync negotiation */
#define TARST_PPR_NEG 4 /* target is doing sync negotiation */
#define TARST_OK 5 /* sync/wide agreement is valid */
/* target flags */
#define TARF_SYNC 0x01 /* target can do sync */
#define TARF_WIDE 0x02 /* target can do wide */
#define TARF_TAG 0x04 /* target can do tags */
#define TARF_DT 0x08 /* target can do DT clocking */
#define TARF_ISWIDE 0x10 /* target is wide */
#define TARF_ISDT 0x20 /* target is doing DT clocking */
/* Driver internal state */
struct siop_common_softc {
struct device sc_dev;
struct scsi_link sc_link; /* link to upper level */
int features; /* chip's features */
int ram_size;
int maxburst;
int maxoff;
int clock_div; /* async. clock divider (scntl3) */
int clock_period; /* clock period (ns * 10) */
int st_minsync; /* min and max sync period, */
int dt_minsync;
int st_maxsync; /* as sent in or PPR messages */
int dt_maxsync;
int mode; /* current SE/LVD/HVD mode */
bus_space_tag_t sc_rt; /* bus_space registers tag */
bus_space_handle_t sc_rh; /* bus_space registers handle */
bus_addr_t sc_raddr; /* register addresses */
bus_space_tag_t sc_ramt; /* bus_space ram tag */
bus_space_handle_t sc_ramh; /* bus_space ram handle */
bus_dma_tag_t sc_dmat; /* bus DMA tag */
void (*sc_reset)(struct siop_common_softc*); /* reset callback */
bus_dmamap_t sc_scriptdma; /* DMA map for script */
bus_addr_t sc_scriptaddr; /* on-board ram or physical address */
u_int32_t *sc_script; /* script location in memory */
struct siop_common_target *targets[16]; /* per-target states */
};
/* features */
#define SF_BUS_WIDE 0x00000001 /* wide bus */
#define SF_BUS_ULTRA 0x00000002 /* Ultra (20MHz) bus */
#define SF_BUS_ULTRA2 0x00000004 /* Ultra2 (40MHz) bus */
#define SF_BUS_ULTRA3 0x00000008 /* Ultra3 (80MHz) bus */
#define SF_BUS_DIFF 0x00000010 /* differential bus */
#define SF_CHIP_LED0 0x00000100 /* led on GPIO0 */
#define SF_CHIP_LEDC 0x00000200 /* led on GPIO0 with hardware control */
#define SF_CHIP_DBLR 0x00000400 /* clock doubler or quadrupler */
#define SF_CHIP_QUAD 0x00000800 /* clock quadrupler, with PPL */
#define SF_CHIP_FIFO 0x00001000 /* large fifo */
#define SF_CHIP_PF 0x00002000 /* Instructions prefetch */
#define SF_CHIP_RAM 0x00004000 /* on-board RAM */
#define SF_CHIP_LS 0x00008000 /* load/store instruction */
#define SF_CHIP_10REGS 0x00010000 /* 10 scratch registers */
#define SF_CHIP_DFBC 0x00020000 /* Use DFBC register */
#define SF_CHIP_DT 0x00040000 /* DT clocking */
#define SF_CHIP_GEBUG 0x00080000 /* SCSI gross error bug */
#define SF_CHIP_AAIP 0x00100000 /* Always generate AIP regardless of SNCTL4*/
#define SF_CHIP_BE 0x00200000 /* big-endian */
#define SF_PCI_RL 0x01000000 /* PCI read line */
#define SF_PCI_RM 0x02000000 /* PCI read multiple */
#define SF_PCI_BOF 0x04000000 /* PCI burst opcode fetch */
#define SF_PCI_CLS 0x08000000 /* PCI cache line size */
#define SF_PCI_WRI 0x10000000 /* PCI write and invalidate */
int siop_common_attach(struct siop_common_softc *);
void siop_common_reset(struct siop_common_softc *);
void siop_setuptables(struct siop_common_cmd *);
int siop_modechange(struct siop_common_softc *);
int siop_wdtr_neg(struct siop_common_cmd *);
int siop_sdtr_neg(struct siop_common_cmd *);
int siop_ppr_neg(struct siop_common_cmd *);
void siop_sdtr_msg(struct siop_common_cmd *, int, int, int);
void siop_wdtr_msg(struct siop_common_cmd *, int, int);
void siop_ppr_msg(struct siop_common_cmd *, int, int, int);
void siop_update_xfer_mode(struct siop_common_softc *, int);
int siop_iwr(struct siop_common_cmd *);
/* actions to take at return of siop_wdtr_neg() and siop_sdtr_neg() */
#define SIOP_NEG_NOP 0x0
#define SIOP_NEG_MSGOUT 0x1
#define SIOP_NEG_ACK 0x2
void siop_minphys(struct buf *, struct scsi_link *);
void siop_ma(struct siop_common_cmd *);
void siop_sdp(struct siop_common_cmd *, int);
void siop_update_resid(struct siop_common_cmd *, int);
void siop_clearfifo(struct siop_common_softc *);
void siop_resetbus(struct siop_common_softc *);
#define siop_htoc32(sc, x) \
(((sc)->features & SF_CHIP_BE) ? htobe32((x)) : htole32((x)))
#define siop_ctoh32(sc, x) \
(((sc)->features & SF_CHIP_BE) ? betoh32((x)) : letoh32((x)))
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