148156Sjlemon/*- 257828Sjlemon * Copyright (c) 1999,2000 Jonathan Lemon 348156Sjlemon * All rights reserved. 448156Sjlemon * 548156Sjlemon * Redistribution and use in source and binary forms, with or without 648156Sjlemon * modification, are permitted provided that the following conditions 748156Sjlemon * are met: 848156Sjlemon * 1. Redistributions of source code must retain the above copyright 948156Sjlemon * notice, this list of conditions and the following disclaimer. 1048156Sjlemon * 2. Redistributions in binary form must reproduce the above copyright 1148156Sjlemon * notice, this list of conditions and the following disclaimer in the 1248156Sjlemon * documentation and/or other materials provided with the distribution. 1348156Sjlemon * 1448156Sjlemon * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1548156Sjlemon * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1648156Sjlemon * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1748156Sjlemon * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1848156Sjlemon * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1948156Sjlemon * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2048156Sjlemon * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2148156Sjlemon * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2248156Sjlemon * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2348156Sjlemon * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2448156Sjlemon * SUCH DAMAGE. 2548156Sjlemon * 2650477Speter * $FreeBSD$ 2748156Sjlemon */ 2848156Sjlemon 2948156Sjlemon/* 3048156Sjlemon * software structures for the Compaq RAID controller 3148156Sjlemon */ 3248156Sjlemon 3348156Sjlemon#ifndef _IDAVAR_H 34124471Smdodd#define _IDAVAR_H 3548156Sjlemon 36124471Smdodd#define ida_inb(ida, port) \ 3757828Sjlemon bus_space_read_1((ida)->tag, (ida)->bsh, port) 38124471Smdodd#define ida_inw(ida, port) \ 3957828Sjlemon bus_space_read_2((ida)->tag, (ida)->bsh, port) 40124471Smdodd#define ida_inl(ida, port) \ 4157828Sjlemon bus_space_read_4((ida)->tag, (ida)->bsh, port) 4257828Sjlemon 43124471Smdodd#define ida_outb(ida, port, val) \ 4457828Sjlemon bus_space_write_1((ida)->tag, (ida)->bsh, port, val) 45124471Smdodd#define ida_outw(ida, port, val) \ 4657828Sjlemon bus_space_write_2((ida)->tag, (ida)->bsh, port, val) 47124471Smdodd#define ida_outl(ida, port, val) \ 4857828Sjlemon bus_space_write_4((ida)->tag, (ida)->bsh, port, val) 4957828Sjlemon 5048156Sjlemonstruct ida_hdr { 5148156Sjlemon u_int8_t drive; /* logical drive */ 5248156Sjlemon u_int8_t priority; /* block priority */ 5348156Sjlemon u_int16_t size; /* size of request, in words */ 5448156Sjlemon}; 5548156Sjlemon 5648156Sjlemonstruct ida_req { 5748156Sjlemon u_int16_t next; /* offset of next request */ 5848156Sjlemon u_int8_t command; /* command */ 5948156Sjlemon u_int8_t error; /* return error code */ 6048156Sjlemon u_int32_t blkno; /* block number */ 6148156Sjlemon u_int16_t bcount; /* block count */ 6248156Sjlemon u_int8_t sgcount; /* number of scatter/gather entries */ 6348156Sjlemon u_int8_t spare; /* reserved */ 6448156Sjlemon}; 6548156Sjlemon 6648156Sjlemonstruct ida_sgb { 6748156Sjlemon u_int32_t length; /* length of S/G segment */ 6848156Sjlemon u_int32_t addr; /* physical address of block */ 6948156Sjlemon}; 7048156Sjlemon 71124471Smdodd#define IDA_NSEG 32 /* maximum number of segments */ 7248156Sjlemon 7348156Sjlemon/* 7448156Sjlemon * right now, this structure totals 276 bytes. 7548156Sjlemon */ 7648156Sjlemonstruct ida_hardware_qcb { 7748156Sjlemon struct ida_hdr hdr; /* 4 */ 7848156Sjlemon struct ida_req req; /* 12 */ 7948156Sjlemon struct ida_sgb seg[IDA_NSEG]; /* 256 */ 80144991Smdodd struct ida_qcb *qcb; /* 4 - qcb backpointer */ 8148156Sjlemon}; 8248156Sjlemon 8348156Sjlemontypedef enum { 8448156Sjlemon QCB_FREE = 0x0000, 8548156Sjlemon QCB_ACTIVE = 0x0001, /* waiting for completion */ 8648156Sjlemon} qcb_state; 8748156Sjlemon 8848156Sjlemon#define DMA_DATA_IN 0x0001 8948156Sjlemon#define DMA_DATA_OUT 0x0002 90124471Smdodd#define IDA_COMMAND 0x0004 91124471Smdodd#define DMA_DATA_TRANSFER (DMA_DATA_IN | DMA_DATA_OUT) 9248156Sjlemon 93124471Smdodd#define IDA_QCB_MAX 256 94124471Smdodd#define IDA_CONTROLLER 0 /* drive "number" for controller */ 9548156Sjlemon 9648156Sjlemonstruct ida_qcb { 9748156Sjlemon struct ida_hardware_qcb *hwqcb; 9848156Sjlemon qcb_state state; 9948156Sjlemon short flags; 10048156Sjlemon union { 10160938Sjake STAILQ_ENTRY(ida_qcb) stqe; 10260938Sjake SLIST_ENTRY(ida_qcb) sle; 10348156Sjlemon } link; 10448156Sjlemon bus_dmamap_t dmamap; 10557828Sjlemon bus_addr_t hwqcb_busaddr; 10659249Sphk struct bio *buf; /* bio associated with qcb */ 10748156Sjlemon}; 10848156Sjlemon 10957828Sjlemonstruct ida_softc; 11057828Sjlemon 11157828Sjlemonstruct ida_access { 11257828Sjlemon int (*fifo_full)(struct ida_softc *); 11357828Sjlemon void (*submit)(struct ida_softc *, struct ida_qcb *); 11457828Sjlemon bus_addr_t (*done)(struct ida_softc *); 11557828Sjlemon int (*int_pending)(struct ida_softc *); 11657828Sjlemon void (*int_enable)(struct ida_softc *, int); 11757828Sjlemon}; 11857828Sjlemon 11948156Sjlemon/* 120144991Smdodd * flags for the controller 12148156Sjlemon */ 122124471Smdodd#define IDA_ATTACHED 0x01 /* attached */ 123124471Smdodd#define IDA_FIRMWARE 0x02 /* firmware must be started */ 124124471Smdodd#define IDA_INTERRUPTS 0x04 /* interrupts enabled */ 12548156Sjlemon 12648156Sjlemonstruct ida_softc { 12748156Sjlemon device_t dev; 12848156Sjlemon int unit; 129138853Smdodd 130138853Smdodd struct callout ch; 131130585Sphk struct cdev *ida_dev_t; 13248156Sjlemon 13348156Sjlemon int regs_res_type; 13448156Sjlemon int regs_res_id; 13548156Sjlemon struct resource *regs; 13648156Sjlemon 13748156Sjlemon int irq_res_type; 13848156Sjlemon struct resource *irq; 13948156Sjlemon void *ih; 14048156Sjlemon 14148156Sjlemon bus_space_tag_t tag; 14248156Sjlemon bus_space_handle_t bsh; 14348156Sjlemon 14448156Sjlemon /* various DMA tags */ 14548156Sjlemon bus_dma_tag_t parent_dmat; 14648156Sjlemon bus_dma_tag_t buffer_dmat; 14748156Sjlemon 14848156Sjlemon bus_dma_tag_t hwqcb_dmat; 14948156Sjlemon bus_dmamap_t hwqcb_dmamap; 15048156Sjlemon bus_addr_t hwqcb_busaddr; 15148156Sjlemon 15248156Sjlemon bus_dma_tag_t sg_dmat; 15348156Sjlemon 15448156Sjlemon int num_drives; 15548156Sjlemon int num_qcbs; 15648156Sjlemon int flags; 15748156Sjlemon 158138853Smdodd int qactive; 159138853Smdodd 16048156Sjlemon struct ida_hardware_qcb *hwqcbs; /* HW QCB array */ 16148156Sjlemon struct ida_qcb *qcbs; /* kernel QCB array */ 16260938Sjake SLIST_HEAD(, ida_qcb) free_qcbs; 16360938Sjake STAILQ_HEAD(, ida_qcb) qcb_queue; 16459249Sphk struct bio_queue_head bio_queue; 16557828Sjlemon 16657828Sjlemon struct ida_access cmd; 16748156Sjlemon}; 16848156Sjlemon 16948156Sjlemon/* 17048156Sjlemon * drive flags 17148156Sjlemon */ 172124471Smdodd#define DRV_WRITEPROT 0x0001 17348156Sjlemon 17459485Smdoddstruct idad_softc { 17548156Sjlemon device_t dev; 17648156Sjlemon struct ida_softc *controller; 177125975Sphk struct disk *disk; 17863934Sjlemon int drive; /* per controller */ 17963934Sjlemon int unit; /* global */ 18048156Sjlemon int cylinders; 18148156Sjlemon int heads; 18248156Sjlemon int sectors; 18348156Sjlemon int secsize; 18448156Sjlemon int secperunit; 18548156Sjlemon int flags; 18648156Sjlemon}; 18748156Sjlemon 18857828Sjlemonstruct ida_board { 18957828Sjlemon u_int32_t board; 19057828Sjlemon char *desc; 19157828Sjlemon struct ida_access *accessor; 19270845Sjlemon int flags; 19357828Sjlemon}; 19457828Sjlemon 19557828Sjlemonextern int ida_detach(device_t dev); 19648156Sjlemonextern struct ida_softc *ida_alloc(device_t dev, struct resource *regs, 19748156Sjlemon int regs_type, int regs_id, bus_dma_tag_t parent_dmat); 19848156Sjlemonextern void ida_free(struct ida_softc *ida); 19948156Sjlemonextern int ida_init(struct ida_softc *ida); 200144991Smdoddextern void ida_attach(struct ida_softc *ida); 20148156Sjlemonextern int ida_command(struct ida_softc *ida, int command, void *data, 20273113Sjlemon int datasize, int drive, u_int32_t pblkno, int flags); 20359249Sphkextern void ida_submit_buf(struct ida_softc *ida, struct bio *bp); 20448156Sjlemonextern void ida_intr(void *data); 20548156Sjlemon 20659485Smdoddextern void idad_intr(struct bio *bp); 20748156Sjlemon 20848156Sjlemon#endif /* _IDAVAR_H */ 209