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NetBSD/sys/dev/ic/aic7xxxvar.h

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/* $NetBSD: aic7xxxvar.h,v 1.23 2000/05/22 21:14:26 fvdl Exp $ */
/*
* Interface to the generic driver for the aic7xxx based adaptec
* SCSI controllers. This is used to implement product specific
* probe and attach routines.
*
* Copyright (c) 1994, 1995, 1996, 1997, 1998, 1999, 2000 Justin T. Gibbs.
* All rights reserved.
*
* 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,
* without modification.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* the GNU Public License ("GPL").
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD: src/sys/dev/aic7xxx/aic7xxx.h,v 1.16 2000/02/09 21:24:59 gibbs Exp $
*/
#ifndef _AIC7XXX_H_
#define _AIC7XXX_H_
#ifndef MAX
#define MAX(a,b) (((a) > (b)) ? (a) : (b))
#endif
#ifndef MIN
#define MIN(a,b) (((a) < (b)) ? (a) : (b))
#endif
#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
#define TRUE 1
#endif
/*
* The maximum transfer per S/G segment.
*/
#define AHC_MAXTRANSFER_SIZE ctob(AHC_NSEG - 1)
/*
* Convert FreeBSD queue macro
*/
#define STAILQ_ENTRY SIMPLEQ_ENTRY
/*
* The number of dma segments supported. The current implementation limits
* us to 255 S/G entries (this may change to be unlimited at some point).
* To reduce the driver's memory consumption, we further limit the number
* supported to be sufficient to handle the largest mapping supported by
* the kernel, MAXPHYS. Assuming the transfer is as fragmented as possible
* and unaligned, this turns out to be the number of paged sized transfers
* in MAXPHYS plus an extra element to handle any unaligned residual.
*/
#define AHC_NSEG (MIN(btoc(MAXPHYS) + 1, 255))
#define AHC_SCB_MAX 255 /*
* Up to 255 SCBs on some types of aic7xxx
* based boards. The aic7870 have 16 internal
* SCBs, but external SRAM bumps this to 255.
* The aic7770 family have only 4, and the
* aic7850 has only 3.
*/
#define AHC_TMODE_CMDS 256 /*
* Ring Buffer of incoming target commands.
* We allocate 256 to simplify the logic
* in the sequencer by using the natural
* wrap point of an 8bit counter.
*/
struct ahc_dma_seg {
u_int32_t addr;
u_int32_t len;
};
typedef enum {
AHC_NONE = 0x0000,
AHC_CHIPID_MASK = 0x00FF,
AHC_AIC7770 = 0x0001,
AHC_AIC7850 = 0x0002,
AHC_AIC7855 = 0x0003,
AHC_AIC7859 = 0x0004,
AHC_AIC7860 = 0x0005,
AHC_AIC7870 = 0x0006,
AHC_AIC7880 = 0x0007,
AHC_AIC7890 = 0x0008,
AHC_AIC7892 = 0x0009,
AHC_AIC7895 = 0x000a,
AHC_AIC7896 = 0x000b,
AHC_AIC7899 = 0x000c,
AHC_VL = 0x0100, /* Bus type VL */
AHC_EISA = 0x0200, /* Bus type EISA */
AHC_PCI = 0x0400, /* Bus type PCI */
AHC_BUS_MASK = 0x0F00
} ahc_chip;
extern char *ahc_chip_names[];
typedef enum {
AHC_FENONE = 0x0000,
AHC_ULTRA = 0x0001, /* Supports 20MHz Transfers */
AHC_ULTRA2 = 0x0002, /* Supports 40MHz Transfers */
AHC_WIDE = 0x0004, /* Wide Channel */
AHC_TWIN = 0x0008, /* Twin Channel */
AHC_MORE_SRAM = 0x0010, /* 80 bytes instead of 64 */
AHC_CMD_CHAN = 0x0020, /* Has a Command DMA Channel */
AHC_QUEUE_REGS = 0x0040, /* Has Queue management registers */
AHC_SG_PRELOAD = 0x0080, /* Can perform auto-SG preload */
AHC_SPIOCAP = 0x0100, /* Has a Serial Port I/O Cap Register */
AHC_MULTI_TID = 0x0200, /* Has bitmask of TIDs for select-in */
AHC_HS_MAILBOX = 0x0400, /* Has HS_MAILBOX register */
AHC_DT = 0x0800, /* Double Transition transfers */
AHC_NEW_TERMCTL = 0x1000,
AHC_MULTI_FUNC = 0x2000, /* Multi-Function Twin Channel Device */
AHC_TARG_DMABUG = 0x4000, /* WideOdd Data-In bug in TMODE */
AHC_AIC7770_FE = AHC_TARG_DMABUG,
AHC_AIC7850_FE = AHC_TARG_DMABUG|AHC_SPIOCAP,
AHC_AIC7855_FE = AHC_AIC7850_FE,
AHC_AIC7859_FE = AHC_AIC7850_FE|AHC_ULTRA,
AHC_AIC7860_FE = AHC_AIC7859_FE,
AHC_AIC7870_FE = AHC_TARG_DMABUG,
AHC_AIC7880_FE = AHC_TARG_DMABUG|AHC_ULTRA,
AHC_AIC7890_FE = AHC_MORE_SRAM|AHC_CMD_CHAN|AHC_ULTRA2|AHC_QUEUE_REGS
|AHC_SG_PRELOAD|AHC_MULTI_TID|AHC_HS_MAILBOX
|AHC_NEW_TERMCTL,
AHC_AIC7892_FE = AHC_AIC7890_FE|AHC_DT,
AHC_AIC7895_FE = AHC_AIC7880_FE|AHC_MORE_SRAM
|AHC_CMD_CHAN|AHC_MULTI_FUNC,
AHC_AIC7895C_FE = AHC_AIC7895_FE|AHC_MULTI_TID,
AHC_AIC7896_FE = AHC_AIC7890_FE|AHC_MULTI_FUNC,
AHC_AIC7899_FE = AHC_AIC7892_FE|AHC_MULTI_FUNC
} ahc_feature;
typedef enum {
AHC_FNONE = 0x000,
AHC_PAGESCBS = 0x001,/* Enable SCB paging */
AHC_CHANNEL_B_PRIMARY = 0x002,/*
* On twin channel adapters, probe
* channel B first since it is the
* primary bus.
*/
AHC_USEDEFAULTS = 0x004,/*
* For cards without an seeprom
* or a BIOS to initialize the chip's
* SRAM, we use the default target
* settings.
*/
AHC_SHARED_SRAM = 0x010,
AHC_LARGE_SEEPROM = 0x020,/* Uses C56_66 not C46 */
AHC_RESET_BUS_A = 0x040,
AHC_RESET_BUS_B = 0x080,
AHC_EXTENDED_TRANS_A = 0x100,
AHC_EXTENDED_TRANS_B = 0x200,
AHC_TERM_ENB_A = 0x400,
AHC_TERM_ENB_B = 0x800,
AHC_INITIATORMODE = 0x1000,/*
* Allow initiator operations on
* this controller.
*/
AHC_TARGETMODE = 0x2000,/*
* Allow target operations on this
* controller.
*/
AHC_NEWEEPROM_FMT = 0x4000,
AHC_RESOURCE_SHORTAGE = 0x8000,
AHC_TQINFIFO_BLOCKED = 0x10000,/* Blocked waiting for ATIOs */
AHC_INT50_SPEEDFLEX = 0x20000,/*
* Internal 50pin connector
* sits behind an aic3860
*/
} ahc_flag;
typedef enum {
SCB_FREE = 0x0000,
SCB_OTHERTCL_TIMEOUT = 0x0002,/*
* Another device was active
* during the first timeout for
* this SCB so we gave ourselves
* an additional timeout period
* in case it was hogging the
* bus.
*/
SCB_DEVICE_RESET = 0x0004,
SCB_SENSE = 0x0008,
SCB_FREEZE_QUEUE = 0x0010,
SCB_REQUEUE = 0x0020,
SCB_RECOVERY_SCB = 0x0040,
SCB_ABORT = 0x1000,
SCB_QUEUED_MSG = 0x2000,
SCB_ACTIVE = 0x4000,
SCB_TARGET_IMMEDIATE = 0x8000
} scb_flag;
typedef enum {
MSGLOOP_IN_PROG,
MSGLOOP_MSGCOMPLETE,
MSGLOOP_TERMINATED
} msg_loop_stat;
/*
* The driver keeps up to MAX_SCB scb structures per card in memory. The SCB
* consists of a "hardware SCB" mirroring the fields availible on the card
* and additional information the kernel stores for each transaction.
*/
struct hardware_scb {
/*0*/ u_int8_t control;
/*1*/ u_int8_t tcl; /* 4/1/3 bits */
/*2*/ u_int8_t status;
/*3*/ u_int8_t SG_count;
/*4*/ u_int32_t SG_pointer;
/*8*/ u_int8_t residual_SG_count;
/*9*/ u_int8_t residual_data_count[3];
/*12*/ u_int32_t data;
/*16*/ u_int32_t datalen; /* Really only three bytes, but its
* faster to treat it as a long on
* a quad boundary.
*/
/*20*/ u_int32_t cmdpointer;
/*24*/ u_int8_t cmdlen;
/*25*/ u_int8_t tag; /* Index into our kernel SCB array.
* Also used as the tag for tagged I/O
*/
/*26*/ u_int8_t next; /* Used for threading SCBs in the
* "Waiting for Selection" and
* "Disconnected SCB" lists down
* in the sequencer.
*/
/*27*/ u_int8_t scsirate; /* Value for SCSIRATE register */
/*28*/ u_int8_t scsioffset; /* Value for SCSIOFFSET register */
/*29*/ u_int8_t spare[3]; /*
* Spare space available on
* all controller types.
*/
/*32*/ u_int8_t cmdstore[16]; /*
* CDB storage for controllers
* supporting 64 byte SCBs.
*/
/*48*/ u_int32_t cmdstore_busaddr; /*
* Address of command store for
* 32byte SCB adapters
*/
/*48*/ u_int8_t spare_64[12]; /*
* Pad to 64 bytes.
*/
};
struct scb {
struct hardware_scb *hscb;
SLIST_ENTRY(scb) links; /* for chaining */
LIST_ENTRY(scb) plinks; /* pending chain */
struct scsipi_xfer *xs;
scb_flag flags;
bus_dmamap_t dmamap;
struct ahc_dma_seg *sg_list;
bus_addr_t sg_list_phys;
u_int sg_count;/* How full ahc_dma_seg is */
};
/*
* Connection desciptor for select-in requests in target mode.
* The first byte is the connecting target, followed by identify
* message and optional tag information, terminated by 0xFF. The
* remainder is the command to execute. The cmd_valid byte is on
* an 8 byte boundary to simplify setting it on aic7880 hardware
* which only has limited direct access to the DMA FIFO.
*/
struct target_cmd {
u_int8_t initiator_channel;
u_int8_t targ_id; /* Target ID we were selected at */
u_int8_t identify; /* Identify message */
u_int8_t bytes[21];
u_int8_t cmd_valid;
u_int8_t pad[7];
};
/*
* Number of events we can buffer up if we run out
* of immediate notify ccbs.
*/
#define AHC_TMODE_EVENT_BUFFER_SIZE 8
struct ahc_tmode_event {
u_int8_t initiator_id;
u_int8_t event_type; /* MSG type or EVENT_TYPE_BUS_RESET */
#define EVENT_TYPE_BUS_RESET 0xFF
u_int8_t event_arg;
};
/*
* Per lun target mode state including accept TIO CCB
* and immediate notify CCB pools.
*/
struct tmode_lstate {
#ifdef maybe_later
struct cam_path *path;
struct ccb_hdr_slist accept_tios;
struct ccb_hdr_slist immed_notifies;
struct ahc_tmode_event event_buffer[AHC_TMODE_EVENT_BUFFER_SIZE];
u_int8_t event_r_idx;
u_int8_t event_w_idx;
#else
u_int8_t dummy;
#endif
};
#define AHC_TRANS_CUR 0x01 /* Modify current neogtiation status */
#define AHC_TRANS_ACTIVE 0x03 /* Assume this is the active target */
#define AHC_TRANS_GOAL 0x04 /* Modify negotiation goal */
#define AHC_TRANS_USER 0x08 /* Modify user negotiation settings */
struct ahc_transinfo {
u_int8_t width;
u_int8_t period;
u_int8_t offset;
u_int8_t ppr_flags;
};
struct ahc_initiator_tinfo {
u_int8_t scsirate;
struct ahc_transinfo current;
struct ahc_transinfo goal;
struct ahc_transinfo user;
};
/*
* Per target mode enabled target state. Esentially just an array of
* pointers to lun target state as well as sync/wide negotiation information
* for each initiator<->target mapping (including the mapping for when we
* are the initiator).
*/
struct tmode_tstate {
#if 0
struct tmode_lstate* enabled_luns[8];
#endif
struct ahc_initiator_tinfo transinfo[16];
/*
* Per initiator state bitmasks.
*/
u_int16_t ultraenb; /* Using ultra sync rate */
u_int16_t discenable; /* Disconnection allowed */
u_int16_t tagenable; /* Tagged Queuing allowed */
u_int16_t tagdisable; /* TQ explicity disallowed */
};
#define AHC_TARGET_WILDCARD -1
#define AHC_LUN_WILDCARD -1
/*
* XXX translate FreeBSD SCSI status byte values to NetBSD, and define
* a few more.
*/
#define SCSI_STATUS_OK SCSI_OK
#define SCSI_STATUS_CHECK_COND SCSI_CHECK
#define SCSI_STATUS_COND_MET 0x04
#define SCSI_STATUS_BUSY SCSI_BUSY
#define SCSI_STATUS_INTERMED SCSI_INTERM
#define SCSI_STATUS_INTERMED_COND_MET 0x14
#define SCSI_STATUS_RESERV_CONFLICT 0x18
#define SCSI_STATUS_CMD_TERMINATED 0x22
#define SCSI_STATUS_QUEUE_FULL SCSI_QUEUE_FULL
/*
* Define the format of the aic7XXX SEEPROM registers (16 bits).
*/
struct seeprom_config {
/*
* SCSI ID Configuration Flags
*/
u_int16_t device_flags[16]; /* words 0-15 */
#define CFXFER 0x0007 /* synchronous transfer rate */
#define CFSYNCH 0x0008 /* enable synchronous transfer */
#define CFDISC 0x0010 /* enable disconnection */
#define CFWIDEB 0x0020 /* wide bus device */
#define CFSYNCHISULTRA 0x0040 /* CFSYNCH is an ultra offset (2940AU)*/
#define CFSYNCSINGLE 0x0080 /* Single-Transition signalling */
#define CFSTART 0x0100 /* send start unit SCSI command */
#define CFINCBIOS 0x0200 /* include in BIOS scan */
#define CFRNFOUND 0x0400 /* report even if not found */
#define CFMULTILUN 0x0800 /* Probe multiple luns in BIOS scan */
#define CFWBCACHEENB 0x4000 /* Enable W-Behind Cache on disks */
#define CFWBCACHENOP 0xc000 /* Don't touch W-Behind Cache */
/*
* BIOS Control Bits
*/
u_int16_t bios_control; /* word 16 */
#define CFSUPREM 0x0001 /* support all removeable drives */
#define CFSUPREMB 0x0002 /* support removeable boot drives */
#define CFBIOSEN 0x0004 /* BIOS enabled */
/* UNUSED 0x0008 */
#define CFSM2DRV 0x0010 /* support more than two drives */
#define CF284XEXTEND 0x0020 /* extended translation (284x cards) */
/* UNUSED 0x0040 */
#define CFEXTEND 0x0080 /* extended translation enabled */
/* UNUSED 0xff00 */
/*
* Host Adapter Control Bits
*/
u_int16_t adapter_control; /* word 17 */
#define CFAUTOTERM 0x0001 /* Perform Auto termination */
#define CFULTRAEN 0x0002 /* Ultra SCSI speed enable */
#define CF284XSELTO 0x0003 /* Selection timeout (284x cards) */
#define CF284XFIFO 0x000C /* FIFO Threshold (284x cards) */
#define CFSTERM 0x0004 /* SCSI low byte termination */
#define CFWSTERM 0x0008 /* SCSI high byte termination */
#define CFSPARITY 0x0010 /* SCSI parity */
#define CF284XSTERM 0x0020 /* SCSI low byte term (284x cards) */
#define CFRESETB 0x0040 /* reset SCSI bus at boot */
#define CFCHNLBPRIMARY 0x0100 /* aic7895 probe B channel first */
#define CFSEAUTOTERM 0x0400 /* aic7890 Perform SE Auto Termination*/
#define CFLVDSTERM 0x0800 /* aic7890 LVD Termination */
/* UNUSED 0xf280 */
/*
* Bus Release, Host Adapter ID
*/
u_int16_t brtime_id; /* word 18 */
#define CFSCSIID 0x000f /* host adapter SCSI ID */
/* UNUSED 0x00f0 */
#define CFBRTIME 0xff00 /* bus release time */
/*
* Maximum targets
*/
u_int16_t max_targets; /* word 19 */
#define CFMAXTARG 0x00ff /* maximum targets */
/* UNUSED 0xff00 */
u_int16_t res_1[11]; /* words 20-30 */
u_int16_t checksum; /* word 31 */
};
struct ahc_syncrate {
int sxfr_u2;
int sxfr;
/* Rates in Ultra mode have bit 8 of sxfr set */
#define ULTRA_SXFR 0x100
#define ST_SXFR 0x010
u_int8_t period; /* Period to send to SCSI target */
char *rate;
};
typedef enum {
MSG_TYPE_NONE = 0x00,
MSG_TYPE_INITIATOR_MSGOUT = 0x01,
MSG_TYPE_INITIATOR_MSGIN = 0x02,
MSG_TYPE_TARGET_MSGOUT = 0x03,
MSG_TYPE_TARGET_MSGIN = 0x04
} ahc_msg_type;
struct sg_map_node {
bus_dmamap_t sg_dmamap;
bus_addr_t sg_physaddr;
bus_dma_segment_t sg_dmasegs;
int sg_nseg;
struct ahc_dma_seg* sg_vaddr;
SLIST_ENTRY(sg_map_node) links;
};
struct scb_data {
struct hardware_scb *hscbs; /* Array of hardware SCBs */
struct scb *scbarray; /* Array of kernel SCBs */
SLIST_HEAD(, scb) free_scbs; /*
* Pool of SCBs ready to be assigned
* commands to execute.
*/
struct scsipi_sense_data *sense; /* Per SCB sense data */
/*
* "Bus" addresses of our data structures.
*/
bus_dmamap_t hscb_dmamap;
bus_addr_t hscb_busaddr;
bus_dma_segment_t hscb_seg;
int hscb_nseg;
int hscb_size;
bus_dmamap_t sense_dmamap;
bus_addr_t sense_busaddr;
bus_dma_segment_t sense_seg;
int sense_nseg;
int sense_size;
SLIST_HEAD(, sg_map_node) sg_maps;
u_int8_t numscbs;
u_int8_t maxhscbs; /* Number of SCBs on the card */
u_int8_t init_level; /*
* How far we've initialized
* this structure.
*/
};
typedef TAILQ_HEAD(, scsipi_xfer) xs_list_t;
struct ahc_softc {
struct device sc_dev;
struct scsipi_link sc_link;
struct scsipi_link sc_link_b;
struct scsipi_adapter sc_adapter;
bus_space_tag_t tag;
bus_space_handle_t bsh;
struct scb_data *scb_data;
xs_list_t sc_q;
int queue_blocked;
u_int16_t devqueue_blocked[16];
#define AHC_NEG_PENDING 0x01
#define AHC_NEG_SDTRDONE 0x02
#define AHC_NEG_WDTRDONE 0x04
u_int8_t inited_targets[16];
/*
* SCBs that have been send to the controller
*/
LIST_HEAD(, scb) pending_ccbs;
/*
* Target mode related state kept on a per enabled lun basis.
* Targets that are not enabled will have null entries.
* As an initiator, we keep one target entry for our initiator
* ID to store our sync/wide transfer settings.
*/
struct tmode_tstate* enabled_targets[16];
/*
* The black hole device responsible for handling requests for
* disabled luns on enabled targets.
*/
struct tmode_lstate* black_hole;
/*
* Device instance currently on the bus awaiting a continue TIO
* for a command that was not given the disconnect priveledge.
*/
struct tmode_lstate* pending_device;
/*
* Card characteristics
*/
ahc_chip chip;
ahc_feature features;
ahc_flag flags;
/* Values to store in the SEQCTL register for pause and unpause */
u_int8_t unpause;
u_int8_t pause;
/* Command Queues */
u_int8_t qoutfifonext;
u_int8_t qinfifonext;
u_int8_t *qoutfifo;
u_int8_t *qinfifo;
/*
* 256 byte array storing the SCBID of outstanding
* untagged SCBs indexed by TCL.
*/
u_int8_t *untagged_scbs;
/* Channel Names ('A', 'B', etc.) */
char channel;
char channel_b;
/* Initiator Bus ID */
u_int8_t our_id;
u_int8_t our_id_b;
/* Targets that need negotiation messages */
u_int16_t targ_msg_req;
/*
* PCI error detection and data for running the
* PCI error interrupt handler.
*/
int unsolicited_ints;
/*
* Target incoming command FIFO.
*/
struct target_cmd *targetcmds;
u_int8_t tqinfifonext;
/*
* Incoming and outgoing message handling.
*/
u_int8_t send_msg_perror;
ahc_msg_type msg_type;
u_int8_t msgout_buf[8]; /* Message we are sending */
u_int8_t msgin_buf[8]; /* Message we are receiving */
u_int msgout_len; /* Length of message to send */
u_int msgout_index; /* Current index in msgout */
u_int msgin_index; /* Current index in msgin */
void *ih;
bus_dma_tag_t parent_dmat;
int sc_dmaflags;
bus_dmamap_t shared_data_dmamap;
bus_addr_t shared_data_busaddr;
bus_dma_segment_t shared_data_seg;
int shared_data_nseg;
int shared_data_size;
bus_addr_t dma_bug_buf;
/* Number of enabled target mode device on this card */
u_int enabled_luns;
/* Initialization level of this data structure */
u_int init_level;
u_int16_t user_discenable;/* Disconnection allowed */
u_int16_t user_tagenable;/* Tagged Queuing allowed */
void *bus_data;
int (*bus_intr)(struct ahc_softc *);
};
struct full_ahc_softc {
struct ahc_softc softc;
struct scb_data scb_data_storage;
};
/* #define AHC_DEBUG 0x019f */
#ifdef AHC_DEBUG
/* Different debugging levels used when AHC_DEBUG is defined */
#define AHC_SHOWMISC 0x0001
#define AHC_SHOWCMDS 0x0002
#define AHC_SHOWSCBS 0x0004
#define AHC_SHOWABORTS 0x0008
#define AHC_SHOWSENSE 0x0010
#define AHC_SHOWSCBCNT 0x0020
#define AHC_SHOWSCBALLOC 0x0040
#define AHC_SHOWINTR 0x0080
#define AHC_SHOWMSG 0x0100
extern int ahc_debug; /* Initialized in i386/scsi/aic7xxx.c */
#endif
char *ahc_name(struct ahc_softc *ahc);
int ahc_alloc(struct ahc_softc *ahc, bus_space_handle_t sh,
bus_space_tag_t st, bus_dma_tag_t parent_dmat,
ahc_chip chip, ahc_feature features, ahc_flag flags);
int ahc_reset(struct ahc_softc *ahc);
void ahc_free(struct ahc_softc *);
int ahc_probe_scbs(struct ahc_softc *);
int ahc_init(struct ahc_softc *);
int ahc_attach(struct ahc_softc *);
int ahc_intr(void *arg);
/*
* SEEPROM related functions.
*/
void check_extport(struct ahc_softc *ahc, u_int *sxfrctl1);
#define ahc_inb(ahc, port) \
bus_space_read_1((ahc)->tag, (ahc)->bsh, port)
#define ahc_outb(ahc, port, value) \
bus_space_write_1((ahc)->tag, (ahc)->bsh, port, value)
#define ahc_outsb(ahc, port, valp, count) \
bus_space_write_multi_1((ahc)->tag, (ahc)->bsh, port, valp, count)
#define ahc_insb(ahc, port, valp, count) \
bus_space_read_multi_1((ahc)->tag, (ahc)->bsh, port, valp, count)
#endif /* _AIC7XXX_H_ */
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