55bfaed1c0
Well, better late than newer, but things has been hectic
around here, sorry for the long delay.
DMA support has been added to the ATA disk driver.
This only works on Intel PIIX3/4, Acer Aladdin and Promise controllers.
The promise support works without the BIOS on the board,
and timing modes are set to support up to UDMA speed. This
solves the problems with having more than one promise controller
in the same system.
There is support for "generic" DMA, that might work on other
controllers, but now you have been warned :)
More chipset specific code will come soon, I have to find testers
with the approbiate HW, more on that when I have it ready.
The system now uses its own major numbers, please run MAKEDEV
with the devices you need (ad?, acd?, afd?, ast?).
For now the disk driver will also attach to the old wd major
so one can at least boot without this step, but be warned, this
will eventually go away. The bootblocks will have to be changed
before one can boot directly from an "ad" device though.
Fixed problems:
All known hang problems should be solved
The probe code has been sligthly changed, this should solve
the reports I have lying around (I hope).
Hangs when accessing ata & atapi device on the same channel simultaniously.
A real braino in ata_start caused this, fixed.
As usual USE AT YOUR OWN RISK!!, this is still pre alpha level code.
Especially the DMA support can hose your disk real bad if anything
goes wrong, agaiin you have been warned :)
But please tell me how it works for you!
Enjoy!
-Søren
243 lines
11 KiB
C
243 lines
11 KiB
C
/*-
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* Copyright (c) 1998,1999 Søren Schmidt
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: atapi-all.h,v 1.3 1999/03/07 21:49:14 sos Exp $
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*/
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/* ATAPI misc defines */
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#define ATAPI_MAGIC_LSB 0x14
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#define ATAPI_MAGIC_MSB 0xeb
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#define ATAPI_P_READ (ATA_S_DRQ | ATA_I_IN)
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#define ATAPI_P_WRITE (ATA_S_DRQ)
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#define ATAPI_P_CMDOUT (ATA_S_DRQ | ATA_I_CMD)
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#define ATAPI_P_ABORT 0
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#define ATAPI_P_DONE (ATA_I_IN | ATA_I_CMD)
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/* error register bits */
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#define ATAPI_E_ILI 0x01 /* illegal length indication */
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#define ATAPI_E_EOM 0x02 /* end of media detected */
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#define ATAPI_E_ABRT 0x04 /* command aborted */
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#define ATAPI_E_MCR 0x08 /* media change requested */
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#define ATAPI_SK_MASK 0xf0 /* sense key mask */
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#define ATAPI_SK_NO_SENSE 0x00 /* no specific sense key info */
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#define ATAPI_SK_RECOVERED_ERROR 0x10 /* command OK, data recovered */
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#define ATAPI_SK_NOT_READY 0x20 /* no access to drive */
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#define ATAPI_SK_MEDIUM_ERROR 0x30 /* non-recovered data error */
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#define ATAPI_SK_HARDWARE_ERROR 0x40 /* non-recoverable HW failure */
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#define ATAPI_SK_ILLEGAL_REQUEST 0x50 /* invalid command param(s) */
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#define ATAPI_SK_UNIT_ATTENTION 0x60 /* media changed */
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#define ATAPI_SK_DATA_PROTECT 0x70 /* write protect */
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#define ATAPI_SK_BLANK_CHECK 0x80 /* blank check */
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#define ATAPI_SK_VENDOR_SPECIFIC 0x90 /* vendor specific skey */
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#define ATAPI_SK_COPY_ABORTED 0xa0 /* copy aborted */
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#define ATAPI_SK_ABORTED_COMMAND 0xb0 /* command aborted, try again */
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#define ATAPI_SK_EQUAL 0xc0 /* equal */
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#define ATAPI_SK_VOLUME_OVERFLOW 0xd0 /* volume overflow */
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#define ATAPI_SK_MISCOMPARE 0xe0 /* data dont match the medium */
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#define ATAPI_SK_RESERVED 0xf0
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/* ATAPI commands */
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#define ATAPI_TEST_UNIT_READY 0x00 /* check if device is ready */
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#define ATAPI_REZERO_UNIT 0x01 /* reinit device */
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#define ATAPI_REQUEST_SENSE 0x03 /* get sense data */
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#define ATAPI_START_STOP 0x1b /* start/stop the media */
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#define ATAPI_PREVENT_ALLOW 0x1e /* media removal */
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#define ATAPI_READ_CAPACITY 0x25 /* get volume capacity */
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#define ATAPI_READ_BIG 0x28 /* read data */
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#define ATAPI_WRITE_BIG 0x2a /* write data */
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#define ATAPI_SYNCHRONIZE_CACHE 0x35 /* flush buf, close channel */
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#define ATAPI_READ_SUBCHANNEL 0x42 /* get subchannel info */
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#define ATAPI_READ_TOC 0x43 /* get table of contents */
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#define ATAPI_PLAY_MSF 0x47 /* play by MSF address */
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#define ATAPI_PLAY_TRACK 0x48 /* play by track number */
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#define ATAPI_PAUSE 0x4b /* stop/start audio operation */
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#define ATAPI_READ_TRACK_INFO 0x52 /* get track info structure */
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#define ATAPI_MODE_SELECT 0x55 /* set device parameters */
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#define ATAPI_MODE_SENSE 0x5a /* get device parameters */
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#define ATAPI_CLOSE_TRACK 0x5b /* close track/session */
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#define ATAPI_BLANK 0xa1 /* blank (erase) media */
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#define ATAPI_PLAY_BIG 0xa5 /* play by lba */
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#define ATAPI_LOAD_UNLOAD 0xa6 /* changer control command */
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#define ATAPI_PLAY_CD 0xb4 /* universal play command */
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#define ATAPI_MECH_STATUS 0xbd /* get changer status */
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#define ATAPI_READ_CD 0xbe /* read data */
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/* ATAPI device parameter information */
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struct atapi_params {
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u_int8_t cmdsize :2; /* packet command size */
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#define ATAPI_PSIZE_12 0 /* 12 bytes */
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#define ATAPI_PSIZE_16 1 /* 16 bytes */
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u_int8_t :3;
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u_int8_t drqtype :2; /* DRQ type */
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#define ATAPI_DRQT_MPROC 0 /* cpu 3 ms delay */
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#define ATAPI_DRQT_INTR 1 /* intr 10 ms delay */
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#define ATAPI_DRQT_ACCEL 2 /* accel 50 us delay */
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u_int8_t removable :1; /* device is removable */
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u_int8_t device_type :5; /* device type */
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#define ATAPI_TYPE_DIRECT 0 /* disk/floppy */
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#define ATAPI_TYPE_TAPE 1 /* streaming tape */
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#define ATAPI_TYPE_CDROM 5 /* CD-ROM device */
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#define ATAPI_TYPE_OPTICAL 7 /* optical disk */
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u_int8_t :1;
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u_int8_t proto :2; /* command protocol */
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#define ATAPI_PROTO_ATAPI 2
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int16_t reserved1;
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int16_t reserved2;
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int16_t reserved3;
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int16_t reserved4;
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int16_t reserved5;
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int16_t reserved6;
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int16_t reserved7;
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int16_t reserved8;
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int16_t reserved9;
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int8_t serial[20]; /* serial number */
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int16_t reserved20;
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int16_t reserved21;
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int16_t reserved22;
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int8_t revision[8]; /* firmware revision */
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int8_t model[40]; /* model name */
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int16_t reserved47;
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int16_t reserved48;
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u_int8_t vendorcap; /* vendor capabilities */
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u_int8_t dmaflag :1; /* DMA supported */
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u_int8_t lbaflag :1; /* LBA supported - always 1 */
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u_int8_t iordydis :1; /* IORDY can be disabled */
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u_int8_t iordyflag :1; /* IORDY supported */
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u_int8_t :1;
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u_int8_t ovlapflag :1; /* overlap supported */
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u_int8_t :1;
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u_int8_t idmaflag :1; /* interleaved DMA supported */
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int16_t capvalidate; /* validation for above */
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u_int16_t piotiming; /* PIO cycle timing */
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u_int16_t dmatiming; /* DMA cycle timing */
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u_int16_t atavalid; /* fields valid */
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#define ATAPI_FLAG_54_58 1 /* words 54-58 valid */
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#define ATAPI_FLAG_64_70 2 /* words 64-70 valid */
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int16_t reserved54[8];
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int16_t sdmamodes; /* singleword DMA modes */
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int16_t wdmamodes; /* multiword DMA modes */
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int16_t apiomodes; /* advanced PIO modes */
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u_int16_t mwdmamin; /* min. M/W DMA time/word ns */
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u_int16_t mwdmarec; /* rec. M/W DMA time ns */
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u_int16_t pioblind; /* min. PIO cycle w/o flow */
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u_int16_t pioiordy; /* min. PIO cycle IORDY flow */
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int16_t reserved69;
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int16_t reserved70;
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u_int16_t rlsovlap; /* rel time (us) for overlap */
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u_int16_t rlsservice; /* rel time (us) for service */
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int16_t reserved73;
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int16_t reserved74;
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int16_t queuelen;
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int16_t reserved76;
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int16_t reserved77;
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int16_t reserved78;
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int16_t reserved79;
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int16_t versmajor;
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int16_t versminor;
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int16_t featsupp1;
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int16_t featsupp2;
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int16_t featsupp3;
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int16_t featenab1;
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int16_t featenab2;
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int16_t featenab3;
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int16_t udmamodes; /* UltraDMA modes */
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int16_t erasetime;
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int16_t enherasetime;
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int16_t apmlevel;
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int16_t reserved92[34];
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int16_t rmvcap;
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int16_t securelevel;
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};
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/* ATAPI REQUEST SENSE structure */
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struct reqsense {
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u_int8_t error_code :7; /* current or deferred errors */
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u_int8_t valid :1; /* follows QIC-157C */
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u_int8_t reserved1; /* Segment number - reserved */
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u_int8_t sense_key :4; /* sense key */
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u_int8_t reserved2_4 :1; /* reserved */
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u_int8_t ili :1; /* incorrect length indicator */
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u_int8_t eom :1; /* end of medium */
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u_int8_t filemark :1; /* filemark */
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u_int8_t info __attribute__((packed)); /* cmd specific info */
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u_int8_t asl; /* additional sense length (n-7) */
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u_int8_t command_specific; /* additional cmd specific info */
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u_int8_t asc; /* additional sense code */
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u_int8_t ascq; /* additional sense code qualifier */
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u_int8_t replaceable_unit_code; /* field replaceable unit code */
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u_int8_t sk_specific1 :7; /* sense key specific */
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u_int8_t sksv :1; /* sense key specific info valid */
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u_int8_t sk_specific2; /* sense key specific */
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u_int8_t sk_specific3; /* sense key Specific */
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u_int8_t pad[2]; /* padding */
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};
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struct atapi_softc {
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struct ata_softc *controller; /* ptr to parent ctrl */
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struct atapi_params *atapi_parm; /* ata device params */
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int32_t unit; /* ATA_MASTER or ATA_SLAVE */
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u_int32_t flags; /* drive flags */
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};
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typedef void atapi_callback_t(struct atapi_request *);
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struct atapi_request {
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struct atapi_softc *device; /* ptr to parent device */
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void *driver; /* ptr to calling driver */
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u_int8_t ccb[16]; /* command control block */
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int32_t ccbsize; /* size of ccb (12 | 16) */
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int32_t flags;
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#define A_READ 0x0001
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#define ATAPI_F_DMA_ENABLED 0x0002
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#define ATAPI_F_DMA_USED 0x0004
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u_int32_t bytecount; /* bytes to transfer */
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u_int32_t result; /* result code */
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int8_t *data; /* pointer to data buf */
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struct buf *bp; /* associated buf ptr */
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atapi_callback_t *callback; /* ptr to callback func */
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TAILQ_ENTRY(atapi_request) chain; /* list management */
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};
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void atapi_transfer(struct atapi_request *);
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int32_t atapi_interrupt(struct atapi_request *);
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int32_t atapi_queue_cmd(struct atapi_softc *, int8_t [], void *, int32_t, int32_t, atapi_callback_t, void *, struct buf *);
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void atapi_error(struct atapi_softc *, int32_t);
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void atapi_dump(int8_t *, void *, int32_t);
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