8b89ef0a2d
The much roumored replacement for our current IDE/ATA/ATAPI is materialising in the CVS repositories around the globe. So what does this bring us: A new reengineered ATA/ATAPI subsystem, that tries to overcome most of the deficiencies with the current drivers. It supports PCI as well as ISA devices without all the hackery in ide_pci.c to make PCI devices look like ISA counterparts. It doesn't have the excessive wait problem on probe, in fact you shouldn't notice any delay when your devices are getting probed. Probing and attaching of devices are postponed until interrupts are enabled (well almost, not finished yet for disks), making things alot cleaner. Improved performance, although DMA support is still WIP and not in this pre alpha release, worldstone is faster with the new driver compared to the old even with DMA. So what does it take away: There is NO support for old MFM/RLL/ESDI disks. There is NO support for bad144, if your disk is bad, ditch it, it has already outgrown its internal spare sectors, and is dying. For you to try this out, you will have to modify your kernel config file to use the "ata" controller instead of all wdc? entries. example: # for a PCI only system (most modern machines) controller ata0 device atadisk0 # ATA disks device atapicd0 # ATAPI CDROM's device atapist0 # ATAPI tapes #You should add the following on ISA systems: controller ata1 at isa? port "IO_WD1" bio irq 14 controller ata2 at isa? port "IO_WD2" bio irq 15 You can leave it all in there, the system knows how to manage. For now this driver reuses the device entries from the old system (that will probably change later), but remember that disks are now numbered in the sequence they are found (like the SCSI system) not as absolute positions as the old system. Although I have tested this on all the systems I can get my hands on, there might very well be gremlins in there, so use AT YOU OWN RISK!! This is still WIP, so there are lots of rough edges and unfinished things in there, and what I have in my lab might look very different from whats in CVS at any given time. So please have all eventual changes go through me, or chances are they just dissapears... I would very much like to hear from you, both good and bad news are very welcome. Enjoy!! -Søren
181 lines
8.4 KiB
C
181 lines
8.4 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 1.2 1999/03/01 12:11:01 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 /* reading read-protected sec */
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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_int 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_int :3;
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u_int 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_int removable :1; /* device is removable */
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u_int 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_int :1;
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u_int proto :2; /* command protocol */
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#define ATAPI_PROTO_ATAPI 2
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int16_t reserved1[9];
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int8_t serial[20]; /* serial number */
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int16_t reserved2[3];
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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 reserved3[2];
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u_int8_t vendor_cap; /* 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 reserved4;
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u_int16_t pio_timing; /* PIO cycle timing */
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u_int16_t dma_timing; /* DMA cycle timing */
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u_int16_t flags;
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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 reserved5[8];
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u_int8_t swdma_flag; /* singleword DMA supported */
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u_int8_t swdma_active; /* singleword DMA active */
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u_int8_t mwdma_flag; /* multiword DMA supported */
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u_int8_t mwdma_active; /* multiword DMA active */
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u_int8_t apio_flag; /* advanced PIO supported */
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u_int8_t reserved6;
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u_int16_t mwdma_min; /* min. M/W DMA time/word ns */
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u_int16_t mwdma_dflt; /* rec. M/W DMA time ns */
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u_int16_t pio_nfctl_min; /* min. PIO cycle w/o flow */
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u_int16_t pio_iordy_min; /* min. PIO cycle IORDY flow */
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int16_t reserved7[2];
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u_int16_t rls_ovlap; /* rel time (us) for overlap */
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u_int16_t rls_service; /* rel time (us) for service */
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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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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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void atapi_interrupt(struct atapi_request *);
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int 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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