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/*-
* Copyright (c) 1999,2000 Jonathan Lemon
* 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.
*
* 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.
*
* $FreeBSD$
*/
/*
* software structures for the Compaq RAID controller
*/
#ifndef _IDAVAR_H
#define _IDAVAR_H
#define ida_inb(ida, port) \
bus_space_read_1((ida)->tag, (ida)->bsh, port)
#define ida_inw(ida, port) \
bus_space_read_2((ida)->tag, (ida)->bsh, port)
#define ida_inl(ida, port) \
bus_space_read_4((ida)->tag, (ida)->bsh, port)
#define ida_outb(ida, port, val) \
bus_space_write_1((ida)->tag, (ida)->bsh, port, val)
#define ida_outw(ida, port, val) \
bus_space_write_2((ida)->tag, (ida)->bsh, port, val)
#define ida_outl(ida, port, val) \
bus_space_write_4((ida)->tag, (ida)->bsh, port, val)
struct ida_hdr {
u_int8_t drive; /* logical drive */
u_int8_t priority; /* block priority */
u_int16_t size; /* size of request, in words */
};
struct ida_req {
u_int16_t next; /* offset of next request */
u_int8_t command; /* command */
u_int8_t error; /* return error code */
u_int32_t blkno; /* block number */
u_int16_t bcount; /* block count */
u_int8_t sgcount; /* number of scatter/gather entries */
u_int8_t spare; /* reserved */
};
struct ida_sgb {
u_int32_t length; /* length of S/G segment */
u_int32_t addr; /* physical address of block */
};
#define IDA_NSEG 32 /* maximum number of segments */
/*
* right now, this structure totals 276 bytes.
*/
struct ida_hardware_qcb {
struct ida_hdr hdr; /* 4 */
struct ida_req req; /* 12 */
struct ida_sgb seg[IDA_NSEG]; /* 256 */
struct ida_qcb *qcb; /* 4 - qcb backpointer */
};
typedef enum {
QCB_FREE = 0x0000,
QCB_ACTIVE = 0x0001, /* waiting for completion */
} qcb_state;
#define DMA_DATA_IN 0x0001
#define DMA_DATA_OUT 0x0002
#define IDA_COMMAND 0x0004
#define DMA_DATA_TRANSFER (DMA_DATA_IN | DMA_DATA_OUT)
#define IDA_QCB_MAX 256
#define IDA_CONTROLLER 0 /* drive "number" for controller */
struct ida_qcb {
struct ida_hardware_qcb *hwqcb;
qcb_state state;
short flags;
union {
STAILQ_ENTRY(ida_qcb) stqe;
SLIST_ENTRY(ida_qcb) sle;
} link;
bus_dmamap_t dmamap;
bus_addr_t hwqcb_busaddr;
struct bio *buf; /* bio associated with qcb */
};
struct ida_softc;
struct ida_access {
int (*fifo_full)(struct ida_softc *);
void (*submit)(struct ida_softc *, struct ida_qcb *);
bus_addr_t (*done)(struct ida_softc *);
int (*int_pending)(struct ida_softc *);
void (*int_enable)(struct ida_softc *, int);
};
/*
* flags for the controller
*/
#define IDA_ATTACHED 0x01 /* attached */
#define IDA_FIRMWARE 0x02 /* firmware must be started */
#define IDA_INTERRUPTS 0x04 /* interrupts enabled */
struct ida_softc {
device_t dev;
int unit;
struct cdev *ida_dev_t;
int regs_res_type;
int regs_res_id;
struct resource *regs;
int irq_res_type;
struct resource *irq;
void *ih;
bus_space_tag_t tag;
bus_space_handle_t bsh;
/* various DMA tags */
bus_dma_tag_t parent_dmat;
bus_dma_tag_t buffer_dmat;
bus_dma_tag_t hwqcb_dmat;
bus_dmamap_t hwqcb_dmamap;
bus_addr_t hwqcb_busaddr;
bus_dma_tag_t sg_dmat;
int num_drives;
int num_qcbs;
int flags;
struct ida_hardware_qcb *hwqcbs; /* HW QCB array */
struct ida_qcb *qcbs; /* kernel QCB array */
SLIST_HEAD(, ida_qcb) free_qcbs;
STAILQ_HEAD(, ida_qcb) qcb_queue;
struct bio_queue_head bio_queue;
struct ida_access cmd;
};
/*
* drive flags
*/
#define DRV_WRITEPROT 0x0001
struct idad_softc {
device_t dev;
struct ida_softc *controller;
struct disk *disk;
int drive; /* per controller */
int unit; /* global */
int cylinders;
int heads;
int sectors;
int secsize;
int secperunit;
int flags;
};
struct ida_board {
u_int32_t board;
char *desc;
struct ida_access *accessor;
int flags;
};
extern int ida_detach(device_t dev);
extern struct ida_softc *ida_alloc(device_t dev, struct resource *regs,
int regs_type, int regs_id, bus_dma_tag_t parent_dmat);
extern void ida_free(struct ida_softc *ida);
extern int ida_init(struct ida_softc *ida);
extern void ida_attach(struct ida_softc *ida);
extern int ida_command(struct ida_softc *ida, int command, void *data,
int datasize, int drive, u_int32_t pblkno, int flags);
extern void ida_submit_buf(struct ida_softc *ida, struct bio *bp);
extern void ida_intr(void *data);
extern void idad_intr(struct bio *bp);
#endif /* _IDAVAR_H */
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