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freebsd-skq/sys/dev/ata/ata-all.h
sos 6f119c28ba Allow the use of a supplied function to set the PRD table. This is 
needed for new chips that supports 64bit addressing.
2004-08-13 08:14:27 +00:00

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/*-
* Copyright (c) 1998 - 2004 Søren Schmidt <sos@FreeBSD.org>
* 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, immediately at the beginning of the file.
* 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.
*
* $FreeBSD$
*/
/* ATA register defines */
#define ATA_DATA 0x00 /* data register */
#define ATA_ERROR 0x01 /* (R) error register */
#define ATA_E_ILI 0x01 /* illegal length */
#define ATA_E_NM 0x02 /* no media */
#define ATA_E_ABORT 0x04 /* command aborted */
#define ATA_E_MCR 0x08 /* media change request */
#define ATA_E_IDNF 0x10 /* ID not found */
#define ATA_E_MC 0x20 /* media changed */
#define ATA_E_UNC 0x40 /* uncorrectable data */
#define ATA_E_ICRC 0x80 /* UDMA crc error */
#define ATA_E_MASK 0x0f /* error mask */
#define ATA_SK_MASK 0xf0 /* sense key mask */
#define ATA_SK_NO_SENSE 0x00 /* no specific sense key info */
#define ATA_SK_RECOVERED_ERROR 0x10 /* command OK, data recovered */
#define ATA_SK_NOT_READY 0x20 /* no access to drive */
#define ATA_SK_MEDIUM_ERROR 0x30 /* non-recovered data error */
#define ATA_SK_HARDWARE_ERROR 0x40 /* non-recoverable HW failure */
#define ATA_SK_ILLEGAL_REQUEST 0x50 /* invalid command param(s) */
#define ATA_SK_UNIT_ATTENTION 0x60 /* media changed */
#define ATA_SK_DATA_PROTECT 0x70 /* write protect */
#define ATA_SK_BLANK_CHECK 0x80 /* blank check */
#define ATA_SK_VENDOR_SPECIFIC 0x90 /* vendor specific skey */
#define ATA_SK_COPY_ABORTED 0xa0 /* copy aborted */
#define ATA_SK_ABORTED_COMMAND 0xb0 /* command aborted, try again */
#define ATA_SK_EQUAL 0xc0 /* equal */
#define ATA_SK_VOLUME_OVERFLOW 0xd0 /* volume overflow */
#define ATA_SK_MISCOMPARE 0xe0 /* data dont match the medium */
#define ATA_SK_RESERVED 0xf0
#define ATA_FEATURE 0x01 /* (W) feature register */
#define ATA_F_DMA 0x01 /* enable DMA */
#define ATA_F_OVL 0x02 /* enable overlap */
#define ATA_COUNT 0x02 /* (W) sector count */
#define ATA_IREASON 0x02 /* (R) interrupt reason */
#define ATA_I_CMD 0x01 /* cmd (1) | data (0) */
#define ATA_I_IN 0x02 /* read (1) | write (0) */
#define ATA_I_RELEASE 0x04 /* released bus (1) */
#define ATA_I_TAGMASK 0xf8 /* tag mask */
#define ATA_SECTOR 0x03 /* sector # */
#define ATA_CYL_LSB 0x04 /* cylinder# LSB */
#define ATA_CYL_MSB 0x05 /* cylinder# MSB */
#define ATA_DRIVE 0x06 /* Sector/Drive/Head register */
#define ATA_D_LBA 0x40 /* use LBA addressing */
#define ATA_D_IBM 0xa0 /* 512 byte sectors, ECC */
#define ATA_CMD 0x07 /* command register */
#define ATA_STATUS 0x07 /* status register */
#define ATA_S_ERROR 0x01 /* error */
#define ATA_S_INDEX 0x02 /* index */
#define ATA_S_CORR 0x04 /* data corrected */
#define ATA_S_DRQ 0x08 /* data request */
#define ATA_S_DSC 0x10 /* drive seek completed */
#define ATA_S_SERVICE 0x10 /* drive needs service */
#define ATA_S_DWF 0x20 /* drive write fault */
#define ATA_S_DMA 0x20 /* DMA ready */
#define ATA_S_READY 0x40 /* drive ready */
#define ATA_S_BUSY 0x80 /* busy */
#define ATA_ALTSTAT 0x08 /* alternate status register */
#define ATA_ALTOFFSET 0x206 /* alternate registers offset */
#define ATA_PCCARD_ALTOFFSET 0x0e /* do for PCCARD devices */
#define ATA_PC98_ALTOFFSET 0x10c /* do for PC98 devices */
#define ATA_A_IDS 0x02 /* disable interrupts */
#define ATA_A_RESET 0x04 /* RESET controller */
#define ATA_A_4BIT 0x08 /* 4 head bits */
/* ATAPI misc defines */
#define ATAPI_MAGIC_LSB 0x14
#define ATAPI_MAGIC_MSB 0xeb
#define ATAPI_P_READ (ATA_S_DRQ | ATA_I_IN)
#define ATAPI_P_WRITE (ATA_S_DRQ)
#define ATAPI_P_CMDOUT (ATA_S_DRQ | ATA_I_CMD)
#define ATAPI_P_DONEDRQ (ATA_S_DRQ | ATA_I_CMD | ATA_I_IN)
#define ATAPI_P_DONE (ATA_I_CMD | ATA_I_IN)
#define ATAPI_P_ABORT 0
/* misc defines */
#define ATA_PRIMARY 0x1f0
#define ATA_SECONDARY 0x170
#define ATA_PC98_BANK 0x432
#define ATA_IOSIZE 0x08
#define ATA_PC98_IOSIZE 0x10
#define ATA_ALTIOSIZE 0x01
#define ATA_BMIOSIZE 0x08
#define ATA_PC98_BANKIOSIZE 0x01
#define ATA_IOADDR_RID 0
#define ATA_ALTADDR_RID 1
#define ATA_BMADDR_RID 0x20
#define ATA_PC98_ALTADDR_RID 8
#define ATA_PC98_BANKADDR_RID 9
#define ATA_IRQ_RID 0
#define ATA_DEV(device) ((device == ATA_MASTER) ? 0 : 1)
/* busmaster DMA related defines */
#define ATA_DMA_ENTRIES 256
#define ATA_DMA_EOT 0x80000000
#define ATA_BMCMD_PORT 0x09
#define ATA_BMCMD_START_STOP 0x01
#define ATA_BMCMD_WRITE_READ 0x08
#define ATA_BMDEVSPEC_0 0x0a
#define ATA_BMSTAT_PORT 0x0b
#define ATA_BMSTAT_ACTIVE 0x01
#define ATA_BMSTAT_ERROR 0x02
#define ATA_BMSTAT_INTERRUPT 0x04
#define ATA_BMSTAT_MASK 0x07
#define ATA_BMSTAT_DMA_MASTER 0x20
#define ATA_BMSTAT_DMA_SLAVE 0x40
#define ATA_BMSTAT_DMA_SIMPLEX 0x80
#define ATA_BMDEVSPEC_1 0x0c
#define ATA_BMDTP_PORT 0x0d
#define ATA_IDX_ADDR 0x0e
#define ATA_IDX_DATA 0x0f
#define ATA_MAX_RES 0x10
#define ATA_INTR_FLAGS (INTR_MPSAFE|INTR_TYPE_BIO|INTR_ENTROPY)
#define ATA_OP_CONTINUES 0
#define ATA_OP_FINISHED 1
/* ATAPI request sense structure */
struct atapi_sense {
u_int8_t error_code :7; /* current or deferred errors */
u_int8_t valid :1; /* follows ATAPI spec */
u_int8_t segment; /* Segment number */
u_int8_t sense_key :4; /* sense key */
u_int8_t reserved2_4 :1; /* reserved */
u_int8_t ili :1; /* incorrect length indicator */
u_int8_t eom :1; /* end of medium */
u_int8_t filemark :1; /* filemark */
u_int32_t cmd_info __packed; /* cmd information */
u_int8_t sense_length; /* additional sense len (n-7) */
u_int32_t cmd_specific_info __packed; /* additional cmd spec info */
u_int8_t asc; /* additional sense code */
u_int8_t ascq; /* additional sense code qual */
u_int8_t replaceable_unit_code; /* replaceable unit code */
u_int8_t sk_specific :7; /* sense key specific */
u_int8_t sksv :1; /* sense key specific info OK */
u_int8_t sk_specific1; /* sense key specific */
u_int8_t sk_specific2; /* sense key specific */
};
struct ata_request {
struct ata_device *device; /* ptr to device softc */
void *driver; /* driver specific */
union {
struct {
u_int8_t command; /* command reg */
u_int8_t feature; /* feature reg */
u_int16_t count; /* count reg */
u_int64_t lba; /* lba reg */
} ata;
struct {
u_int8_t ccb[16]; /* ATAPI command block */
struct atapi_sense sense_data; /* ATAPI request sense data */
u_int8_t sense_key; /* ATAPI request sense key */
u_int8_t sense_cmd; /* ATAPI saved command */
} atapi;
} u;
u_int8_t status; /* ATA status */
u_int8_t error; /* ATA error */
u_int8_t dmastat; /* DMA status */
u_int32_t bytecount; /* bytes to transfer */
u_int32_t transfersize; /* bytes pr transfer */
u_int32_t donecount; /* bytes transferred */
caddr_t data; /* pointer to data buf */
int flags;
#define ATA_R_CONTROL 0x0001
#define ATA_R_READ 0x0002
#define ATA_R_WRITE 0x0004
#define ATA_R_DMA 0x0008
#define ATA_R_ATAPI 0x0010
#define ATA_R_QUIET 0x0020
#define ATA_R_INTR_SEEN 0x0040
#define ATA_R_TIMEOUT 0x0080
#define ATA_R_ORDERED 0x0100
#define ATA_R_IMMEDIATE 0x0200
#define ATA_R_REQUEUE 0x0400
#define ATA_R_DEBUG 0x1000
void (*callback)(struct ata_request *request);
struct sema done; /* request done sema */
int retries; /* retry count */
int timeout; /* timeout for this cmd */
struct callout_handle timeout_handle; /* handle for untimeout */
int result; /* result error code */
struct task task; /* task management */
struct bio *bio; /* bio for this request */
TAILQ_ENTRY(ata_request) sequence; /* sequence management */
TAILQ_ENTRY(ata_request) chain; /* list management */
};
/* define this for debugging request processing */
#if 0
#define ATA_DEBUG_RQ(request, string) \
{ \
if (request->flags & ATA_R_DEBUG) \
ata_prtdev(request->device, "req=%08x %s " string "\n", \
(u_int)request, ata_cmd2str(request)); \
}
#else
#define ATA_DEBUG_RQ(request, string)
#endif
/* structure describing an ATA/ATAPI device */
struct ata_device {
struct ata_channel *channel;
int unit; /* unit number */
#define ATA_MASTER 0x00
#define ATA_SLAVE 0x10
char *name; /* device name */
struct ata_params *param; /* ata param structure */
void *softc; /* ptr to softc for device */
void (*attach)(struct ata_device *atadev);
void (*detach)(struct ata_device *atadev);
void (*config)(struct ata_device *atadev);
void (*start)(struct ata_device *atadev);
int flags;
#define ATA_D_USE_CHS 0x0001
#define ATA_D_DETACHING 0x0002
#define ATA_D_MEDIA_CHANGED 0x0004
#define ATA_D_ENC_PRESENT 0x0008
int cmd; /* last cmd executed */
int mode; /* transfermode */
void (*setmode)(struct ata_device *atadev, int mode);
};
/* structure for holding DMA Physical Region Descriptors (PRD) entries */
struct ata_dma_prdentry {
u_int32_t addr;
u_int32_t count;
};
/* structure used by the setprd function */
struct ata_dmasetprd_args {
void *dmatab;
int error;
};
/* structure holding DMA related information */
struct ata_dma {
bus_dma_tag_t dmatag; /* parent DMA tag */
bus_dma_tag_t cdmatag; /* control DMA tag */
bus_dmamap_t cdmamap; /* control DMA map */
bus_dma_tag_t ddmatag; /* data DMA tag */
bus_dmamap_t ddmamap; /* data DMA map */
void *dmatab; /* DMA transfer table */
bus_addr_t mdmatab; /* bus address of dmatab */
bus_dma_tag_t wdmatag; /* workspace DMA tag */
bus_dmamap_t wdmamap; /* workspace DMA map */
u_int8_t *workspace; /* workspace */
bus_addr_t wdmatab; /* bus address of dmatab */
u_int32_t alignment; /* DMA engine alignment */
u_int32_t boundary; /* DMA engine boundary */
u_int32_t max_iosize; /* DMA engine max IO size */
u_int32_t cur_iosize; /* DMA engine current IO size */
int flags;
#define ATA_DMA_READ 0x01 /* transaction is a read */
#define ATA_DMA_LOADED 0x02 /* DMA tables etc loaded */
#define ATA_DMA_ACTIVE 0x04 /* DMA transfer in progress */
void (*alloc)(struct ata_channel *ch);
void (*free)(struct ata_channel *ch);
void (*setprd)(void *xsc, bus_dma_segment_t *segs, int nsegs, int error);
int (*load)(struct ata_device *atadev, caddr_t data, int32_t count,int dir);
int (*unload)(struct ata_channel *ch);
int (*start)(struct ata_channel *ch);
int (*stop)(struct ata_channel *ch);
};
/* structure holding lowlevel functions */
struct ata_lowlevel {
void (*reset)(struct ata_channel *ch);
void (*interrupt)(void *channel);
int (*transaction)(struct ata_request *request);
int (*command)(struct ata_device *atadev, u_int8_t command, u_int64_t lba, u_int16_t count, u_int16_t feature);
};
/* structure holding resources for an ATA channel */
struct ata_resource {
struct resource *res;
int offset;
};
/* structure describing an ATA channel */
struct ata_channel {
struct device *dev; /* device handle */
int unit; /* channel number */
struct ata_resource r_io[ATA_MAX_RES];/* I/O resources */
struct resource *r_irq; /* interrupt of this channel */
void *ih; /* interrupt handle */
struct ata_lowlevel hw; /* lowlevel HW functions */
struct ata_dma *dma; /* DMA data / functions */
int flags; /* channel flags */
#define ATA_NO_SLAVE 0x01
#define ATA_USE_16BIT 0x02
#define ATA_USE_PC98GEOM 0x04
#define ATA_ATAPI_DMA_RO 0x08
#define ATA_48BIT_ACTIVE 0x10
#define ATA_IMMEDIATE_MODE 0x20
#define ATA_HWGONE 0x40
struct ata_device device[2]; /* devices on this channel */
#define MASTER 0x00
#define SLAVE 0x01
int devices; /* what is present */
#define ATA_ATA_MASTER 0x01
#define ATA_ATA_SLAVE 0x02
#define ATA_ATAPI_MASTER 0x04
#define ATA_ATAPI_SLAVE 0x08
int lock; /* ATA channel lock */
#define ATA_IDLE 0x0000
#define ATA_ACTIVE 0x0001
void (*reset)(struct ata_channel *);
void (*locking)(struct ata_channel *, int);
#define ATA_LF_LOCK 0x0001
#define ATA_LF_UNLOCK 0x0002
struct mtx queue_mtx; /* queue lock */
TAILQ_HEAD(, ata_request) ata_queue; /* head of ATA queue */
struct ata_request *running; /* currently running request */
};
/* disk bay/enclosure related */
#define ATA_LED_OFF 0x00
#define ATA_LED_RED 0x01
#define ATA_LED_GREEN 0x02
#define ATA_LED_ORANGE 0x03
#define ATA_LED_MASK 0x03
/* externs */
extern devclass_t ata_devclass;
extern int ata_wc;
/* public prototypes */
/* ata-all.c: */
int ata_probe(device_t dev);
int ata_attach(device_t dev);
int ata_detach(device_t dev);
int ata_suspend(device_t dev);
int ata_resume(device_t dev);
int ata_printf(struct ata_channel *ch, int device, const char *fmt, ...) __printflike(3, 4);
int ata_prtdev(struct ata_device *atadev, const char *fmt, ...) __printflike(2, 3);
void ata_set_name(struct ata_device *atadev, char *name, int lun);
void ata_free_name(struct ata_device *atadev);
int ata_get_lun(u_int32_t *map);
int ata_test_lun(u_int32_t *map, int lun);
void ata_free_lun(u_int32_t *map, int lun);
char *ata_mode2str(int mode);
int ata_pmode(struct ata_params *ap);
int ata_wmode(struct ata_params *ap);
int ata_umode(struct ata_params *ap);
int ata_limit_mode(struct ata_device *atadev, int mode, int maxmode);
/* ata-queue.c: */
int ata_reinit(struct ata_channel *ch);
void ata_start(struct ata_channel *ch);
int ata_controlcmd(struct ata_device *atadev, u_int8_t command, u_int16_t feature, u_int64_t lba, u_int16_t count);
int ata_atapicmd(struct ata_device *atadev, u_int8_t *ccb, caddr_t data, int count, int flags, int timeout);
void ata_queue_request(struct ata_request *request);
void ata_finish(struct ata_request *request);
void ata_fail_requests(struct ata_channel *ch, struct ata_device *device);
char *ata_cmd2str(struct ata_request *request);
/* ata-lowlevel.c: */
void ata_generic_hw(struct ata_channel *ch);
int ata_generic_command(struct ata_device *atadev, u_int8_t command, u_int64_t lba, u_int16_t count, u_int16_t feature);
/* subdrivers */
void ad_attach(struct ata_device *atadev);
void acd_attach(struct ata_device *atadev);
void afd_attach(struct ata_device *atadev);
void ast_attach(struct ata_device *atadev);
void atapi_cam_attach_bus(struct ata_channel *ch);
void atapi_cam_detach_bus(struct ata_channel *ch);
void atapi_cam_reinit_bus(struct ata_channel *ch);
/* macros for alloc/free of ata_requests */
extern uma_zone_t ata_zone;
#define ata_alloc_request() uma_zalloc(ata_zone, M_NOWAIT | M_ZERO)
#define ata_free_request(request) uma_zfree(ata_zone, request)
/* macros for locking a channel */
#define ATA_LOCK_CH(ch) \
atomic_cmpset_acq_int(&(ch)->lock, ATA_IDLE, ATA_ACTIVE)
#define ATA_SLEEPLOCK_CH(ch) \
while (!ATA_LOCK_CH(ch)) tsleep((caddr_t)&(ch), PRIBIO, "atalck", 1);
#define ATA_FORCELOCK_CH(ch) \
atomic_store_rel_int(&(ch)->lock, ATA_ACTIVE)
#define ATA_UNLOCK_CH(ch) \
atomic_store_rel_int(&(ch)->lock, ATA_IDLE)
/* macros to hide busspace uglyness */
#define ATA_INB(res, offset) \
bus_space_read_1(rman_get_bustag((res)), \
rman_get_bushandle((res)), (offset))
#define ATA_INW(res, offset) \
bus_space_read_2(rman_get_bustag((res)), \
rman_get_bushandle((res)), (offset))
#define ATA_INL(res, offset) \
bus_space_read_4(rman_get_bustag((res)), \
rman_get_bushandle((res)), (offset))
#define ATA_INSW(res, offset, addr, count) \
bus_space_read_multi_2(rman_get_bustag((res)), \
rman_get_bushandle((res)), \
(offset), (addr), (count))
#define ATA_INSW_STRM(res, offset, addr, count) \
bus_space_read_multi_stream_2(rman_get_bustag((res)), \
rman_get_bushandle((res)), \
(offset), (addr), (count))
#define ATA_INSL(res, offset, addr, count) \
bus_space_read_multi_4(rman_get_bustag((res)), \
rman_get_bushandle((res)), \
(offset), (addr), (count))
#define ATA_INSL_STRM(res, offset, addr, count) \
bus_space_read_multi_stream_4(rman_get_bustag((res)), \
rman_get_bushandle((res)), \
(offset), (addr), (count))
#define ATA_OUTB(res, offset, value) \
bus_space_write_1(rman_get_bustag((res)), \
rman_get_bushandle((res)), (offset), (value))
#define ATA_OUTW(res, offset, value) \
bus_space_write_2(rman_get_bustag((res)), \
rman_get_bushandle((res)), (offset), (value))
#define ATA_OUTL(res, offset, value) \
bus_space_write_4(rman_get_bustag((res)), \
rman_get_bushandle((res)), (offset), (value))
#define ATA_OUTSW(res, offset, addr, count) \
bus_space_write_multi_2(rman_get_bustag((res)), \
rman_get_bushandle((res)), \
(offset), (addr), (count))
#define ATA_OUTSW_STRM(res, offset, addr, count) \
bus_space_write_multi_stream_2(rman_get_bustag((res)), \
rman_get_bushandle((res)), \
(offset), (addr), (count))
#define ATA_OUTSL(res, offset, addr, count) \
bus_space_write_multi_4(rman_get_bustag((res)), \
rman_get_bushandle((res)), \
(offset), (addr), (count))
#define ATA_OUTSL_STRM(res, offset, addr, count) \
bus_space_write_multi_stream_4(rman_get_bustag((res)), \
rman_get_bushandle((res)), \
(offset), (addr), (count))
#define ATA_IDX_INB(ch, idx) \
ATA_INB(ch->r_io[idx].res, ch->r_io[idx].offset)
#define ATA_IDX_INW(ch, idx) \
ATA_INW(ch->r_io[idx].res, ch->r_io[idx].offset)
#define ATA_IDX_INL(ch, idx) \
ATA_INL(ch->r_io[idx].res, ch->r_io[idx].offset)
#define ATA_IDX_INSW(ch, idx, addr, count) \
ATA_INSW(ch->r_io[idx].res, ch->r_io[idx].offset, addr, count)
#define ATA_IDX_INSW_STRM(ch, idx, addr, count) \
ATA_INSW_STRM(ch->r_io[idx].res, ch->r_io[idx].offset, addr, count)
#define ATA_IDX_INSL(ch, idx, addr, count) \
ATA_INSL(ch->r_io[idx].res, ch->r_io[idx].offset, addr, count)
#define ATA_IDX_INSL_STRM(ch, idx, addr, count) \
ATA_INSL_STRM(ch->r_io[idx].res, ch->r_io[idx].offset, addr, count)
#define ATA_IDX_OUTB(ch, idx, value) \
ATA_OUTB(ch->r_io[idx].res, ch->r_io[idx].offset, value)
#define ATA_IDX_OUTW(ch, idx, value) \
ATA_OUTW(ch->r_io[idx].res, ch->r_io[idx].offset, value)
#define ATA_IDX_OUTL(ch, idx, value) \
ATA_OUTL(ch->r_io[idx].res, ch->r_io[idx].offset, value)
#define ATA_IDX_OUTSW(ch, idx, addr, count) \
ATA_OUTSW(ch->r_io[idx].res, ch->r_io[idx].offset, addr, count)
#define ATA_IDX_OUTSW_STRM(ch, idx, addr, count) \
ATA_OUTSW_STRM(ch->r_io[idx].res, ch->r_io[idx].offset, addr, count)
#define ATA_IDX_OUTSL(ch, idx, addr, count) \
ATA_OUTSL(ch->r_io[idx].res, ch->r_io[idx].offset, addr, count)
#define ATA_IDX_OUTSL_STRM(ch, idx, addr, count) \
ATA_OUTSL_STRM(ch->r_io[idx].res, ch->r_io[idx].offset, addr, count)
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