NetBSD/sys/arch/mac68k/include/iopreg.h

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/* $NetBSD: iopreg.h,v 1.4 2000/07/30 21:48:54 briggs Exp $ */
/*
* Copyright (c) 2000 Allen Briggs.
* 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.
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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.
*/
#define IOP1_BASE 0x00004000
#define SCC_IOP 0
#define ISM_IOP 1
#define IOP_CS_BYPASS 0x01
#define IOP_CS_AUTOINC 0x02
#define IOP_CS_RUN 0x04
#define IOP_CS_IRQ 0x08
#define IOP_CS_INT0 0x10
#define IOP_CS_INT1 0x20
#define IOP_CS_HWINT 0x40
#define IOP_CS_DMAINACT 0x80
#define IOP_RESET (IOP_CS_DMAINACT | IOP_CS_AUTOINC)
#define IOP_BYPASS \
(IOP_CS_BYPASS | IOP_CS_AUTOINC | IOP_CS_RUN | IOP_CS_DMAINACT)
#define IOP_INTERRUPT (IOP_CS_INT0 | IOP_CS_INT1)
#define OSS_INTLEVEL_OFFSET 0x0001A006
typedef struct {
volatile u_char ram_hi;
u_char pad0;
volatile u_char ram_lo;
u_char pad1;
volatile u_char control_status;
u_char pad2[3];
volatile u_char data;
u_char pad3[23];
union {
struct {
volatile u_char sccb_cmd;
u_char pad0;
volatile u_char scca_cmd;
u_char pad1;
volatile u_char sccb_data;
u_char pad2;
volatile u_char scca_data;
u_char pad3;
} scc;
struct {
volatile u_char wdata;
u_char pad0;
/* etc... */
} iwm;
} bypass;
} IOPHW;
#define IOP_MAXCHAN 7
#define IOP_MAXMSG 8
#define IOP_MSGLEN 32
#define IOP_MSGBUFLEN (IOP_MSGLEN * IOP_MAXCHAN)
#define IOP_MSG_IDLE 0 /* idle */
#define IOP_MSG_NEW 1 /* new message sent */
#define IOP_MSG_RECEIVED 2 /* message received; processing */
#define IOP_MSG_COMPLETE 3 /* message processing complete */
#define IOP_ADDR_MAX_SEND_CHAN 0x200
#define IOP_ADDR_SEND_STATE 0x201
#define IOP_ADDR_PATCH_CTRL 0x21F
#define IOP_ADDR_SEND_MSG 0x220
#define IOP_ADDR_MAX_RECV_CHAN 0x300
#define IOP_ADDR_RECV_STATE 0x301
#define IOP_ADDR_ALIVE 0x31F
#define IOP_ADDR_RECV_MSG 0x320
typedef struct {
u_char pad1[0x200];
u_char max_send_chan; /* maximum send channel # */
u_char send_state[IOP_MAXCHAN]; /* send channel states */
u_char pad2[23];
u_char patch_ctrl; /* patch control flag */
u_char send_msg[IOP_MSGBUFLEN]; /* send channel message data */
u_char max_recv_chan; /* max. receive channel # */
u_char recv_state[IOP_MAXCHAN]; /* receive channel states */
u_char pad3[23];
u_char alive; /* IOP alive flag */
u_char recv_msg[IOP_MSGBUFLEN]; /* receive channel msg data */
} IOPK;
struct iop_msg;
struct _s_IOP;
typedef void (*iop_msg_handler)(struct _s_IOP *iop, struct iop_msg *);
struct iop_msg {
SIMPLEQ_ENTRY(iop_msg) iopm;
int channel;
int status;
u_char msg[IOP_MSGLEN];
/* The routine that will handle the message */
iop_msg_handler handler;
void *user_data;
};
#define IOP_MSGSTAT_IDLE 0 /* Message unused (invalid) */
#define IOP_MSGSTAT_QUEUED 1 /* Message queued for send */
#define IOP_MSGSTAT_SENDING 2 /* Message on IOP */
#define IOP_MSGSTAT_SENT 3 /* Message complete */
#define IOP_MSGSTAT_RECEIVING 4 /* Top of receive queue */
#define IOP_MSGSTAT_RECEIVED 5 /* Msg received */
#define IOP_MSGSTAT_UNEXPECTED 6 /* Unexpected msg received */
typedef struct _s_IOP {
IOPHW *iop;
struct pool pool;
SIMPLEQ_HEAD(, iop_msg) sendq[IOP_MAXCHAN];
SIMPLEQ_HEAD(, iop_msg) recvq[IOP_MAXCHAN];
iop_msg_handler listeners[IOP_MAXCHAN];
void *listener_data[IOP_MAXCHAN];
struct iop_msg unsolicited_msg;
} IOP;
#define IOP_LOADADDR(ioph,addr) (ioph->ram_lo = addr & 0xff, \
ioph->ram_hi = (addr >> 8) & 0xff)
void iop_init __P((int fullinit));
void iop_upload __P((int iop, u_char *mem, u_long nb, u_long iopbase));
void iop_download __P((int iop, u_char *mem, u_long nb, u_long iopbase));
int iop_send_msg __P((int iopn, int chan, u_char *msg, int msglen,
iop_msg_handler handler, void *udata));
int iop_queue_receipt __P((int iopn, int chan, iop_msg_handler handler,
void *user_data));
int iop_register_listener __P((int iopn, int chan, iop_msg_handler handler,
void *user_data));
/* ADB support */
#define IOP_CHAN_ADB 2
#define IOP_ADB_FL_EXPLICIT 0x80 /* Non-zero if explicit command */
#define IOP_ADB_FL_AUTOPOLL 0x40 /* Auto/SRQ polling enabled */
#define IOP_ADB_FL_SRQ 0x04 /* SRQ detected */
#define IOP_ADB_FL_TIMEOUT 0x02 /* Non-zero if timeout */
/*
* The structure of an ADB packet to/from the IOP is:
* Flag byte (values above)
* Count of bytes in data
* Command byte
* Data (optional)
*/