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/* $OpenBSD: twereg.h,v 1.1 2000/09/15 16:56:13 mickey Exp $ */
/*
* Copyright (c) 2000 Michael Shalayeff
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Michael Shalayeff.
* 4. 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 OR HIS RELATIVES 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 MIND, 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.
*/
/*
* most of the meaning for registers were taken from
* freebsd driver, which in turn got 'em from linux.
* it seems those got 'em from windows driver, in it's turn.
*/
/* general parameters */
#define TWE_MAX_UNITS 16
#define TWE_MAXOFFSETS 62
#define TWE_MAXCMDS 255
#define TWE_SECTOR_SIZE 512
/* XXX freebsd aligns at 64, but it does not work */
#define TWE_ALIGN 512
#define TWE_MAXFER (TWE_MAXOFFSETS * PAGE_SIZE)
/* registers */
#define TWE_CONTROL 0x00
#define TWE_CTRL_CHOSTI 0x00080000 /* clear host int */
#define TWE_CTRL_CATTNI 0x00040000 /* clear attention int */
#define TWE_CTRL_MCMDI 0x00020000 /* mask cmd int */
#define TWE_CTRL_MRDYI 0x00010000 /* mask ready int */
#define TWE_CTRL_ECMDI 0x00008000 /* enable cmd int */
#define TWE_CTRL_ERDYI 0x00004000 /* enable ready int */
#define TWE_CTRL_CERR 0x00000200 /* clear error status */
#define TWE_CTRL_SRST 0x00000100 /* soft reset */
#define TWE_CTRL_EINT 0x00000080 /* enable ints */
#define TWE_CTRL_MINT 0x00000040 /* mask ints */
#define TWE_CTRL_HOSTI 0x00000020 /* generate host int */
#define TWE_STATUS 0x04
#define TWE_STAT_MAJV 0xf0000000
#define TWE_MAJV(st) (((st) >> 28) & 0xf)
#define TWE_STAT_MINV 0x0f000000
#define TWE_MINV(st) (((st) >> 24) & 0xf)
#define TWE_STAT_PCIPAR 0x00800000
#define TWE_STAT_QUEUEE 0x00400000
#define TWE_STAT_CPUERR 0x00200000
#define TWE_STAT_PCIABR 0x00100000
#define TWE_STAT_HOSTI 0x00080000
#define TWE_STAT_ATTNI 0x00040000
#define TWE_STAT_CMDI 0x00020000
#define TWE_STAT_RDYI 0x00010000
#define TWE_STAT_CQF 0x00008000 /* cmd queue full */
#define TWE_STAT_RQE 0x00004000 /* ready queue empty */
#define TWE_STAT_CPURDY 0x00002000 /* cpu ready */
#define TWE_STAT_CQR 0x00001000 /* cmd queue ready */
#define TWE_STAT_FLAGS 0x00fff000 /* mask out other stuff */
#define TWE_STAT_BITS "\020\015cqr\016cpurdy\017rqe\20cqf" \
"\021rdyi\022cmdi\023attni\024hosti\025pciabr\026cpuerr\027queuee\030pcipar"
#define TWE_COMMANDQUEUE 0x08
/*
* the segs offset is encoded into upper 3 bits of the opcode.
* i bet other bits mean something too
* upper 8 bits is the command size in 32bit words.
*/
#define TWE_CMD_NOP 0x0200
#define TWE_CMD_INIT 0x0301
#define TWE_CMD_READ 0x0362
#define TWE_CMD_WRITE 0x0363
#define TWE_CMD_VERIFY 0x0364
#define TWE_CMD_GPARAM 0x0252
#define TWE_CMD_SPARAM 0x0253
#define TWE_CMD_SECINF 0x021a
#define TWE_CMD_AEN 0x021c
#define TWE_READYQUEUE 0x0c
#define TWE_READYID(u) (((u) >> 4) & 0xff)
/* get/set param table ids */
#define TWE_PARAM_UC 0x003 /* unit config */
#define TWE_PARAM_UI 0x300 /* + 16 -- unit information */
#define TWE_PARAM_AEN 0x401
#define TWE_AEN_QEMPTY 0x0000
#define TWE_AEN_SRST 0x0001
#define TWE_AEN_DMIRROR 0x0002 /* degraded mirror */
#define TWE_AEN_CERROR 0x0003 /* controller error */
#define TWE_AEN_RBFAIL 0x0004 /* rebuild failed */
#define TWE_AEN_RBDONE 0x0005
#define TWE_AEN_QFULL 0x00ff
#define TWE_AEN_TUN 0x0015 /* table undefined */
/* struct definitions */
struct twe_param {
u_int16_t table_id;
u_int8_t param_id;
u_int8_t param_size;
u_int8_t data[1];
} __attribute__ ((packed));
struct twe_segs {
u_int32_t twes_addr;
u_int32_t twes_len;
};
struct twe_cmd {
u_int16_t cmd_op;
u_int8_t cmd_index;
u_int8_t cmd_unit_host;
#define TWE_UNITHOST(u, h) (((u) & 0xf) | ((h) << 4))
u_int8_t cmd_status;
u_int8_t cmd_flags;
u_int16_t cmd_count;
union {
struct {
u_int32_t lba;
struct twe_segs segs[TWE_MAXOFFSETS];
u_int32_t pad;
} _cmd_io;
#define cmd_io _._cmd_io
struct {
struct twe_segs segs[TWE_MAXOFFSETS];
} _cmd_param;
#define cmd_param _._cmd_param
struct {
u_int32_t rdy_q_ptr;
} _cmd_init;
#define cmd_init _._cmd_init
} _;
} __attribute__ ((packed)); /* 512 bytes */
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