| 1 | /******************************************************************************
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| 2 | * atapi.c - ATAPI command processing
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| 3 | *
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| 4 | * Copyright (c) 2010 Christian Mueller. Parts copied from/inspired by the
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| 5 | * Linux AHCI driver; those parts are (c) Linux AHCI/ATA maintainers
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| 6 | *
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| 7 | * This program is free software; you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation; either version 2 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * This program is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with this program; if not, write to the Free Software
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| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 20 | */
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| 21 |
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| 22 | #include "os2ahci.h"
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| 23 | #include "ata.h"
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| 24 |
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| 25 | /* -------------------------- macros and constants ------------------------- */
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| 26 |
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| 27 | /* ------------------------ typedefs and structures ------------------------ */
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| 28 |
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| 29 | /* -------------------------- function prototypes -------------------------- */
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| 30 |
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| 31 | /* ------------------------ global/static variables ------------------------ */
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| 32 |
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| 33 | /* ----------------------------- start of code ----------------------------- */
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| 34 |
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| 35 | /******************************************************************************
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| 36 | * Get device or media geometry. This function is expected to check the IORB
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| 37 | * command codes and modifiers to see which one is requested.
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| 38 | */
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| 39 | int atapi_get_geometry(IORBH _far *iorb, int slot)
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| 40 | {
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| 41 | iorb_seterr(iorb, IOERR_CMD_NOT_SUPPORTED);
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| 42 | return(-1);
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| 43 | }
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| 44 |
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| 45 | /******************************************************************************
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| 46 | * Test whether unit is ready.
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| 47 | */
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| 48 | int atapi_unit_ready(IORBH _far *iorb, int slot)
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| 49 | {
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| 50 | iorb_seterr(iorb, IOERR_CMD_NOT_SUPPORTED);
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| 51 | return(-1);
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| 52 | }
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| 53 |
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| 54 | /******************************************************************************
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| 55 | * Read sectors from AHCI device.
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| 56 | */
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| 57 | int atapi_read(IORBH _far *iorb, int slot)
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| 58 | {
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| 59 | iorb_seterr(iorb, IOERR_CMD_NOT_SUPPORTED);
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| 60 | return(-1);
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| 61 | }
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| 62 |
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| 63 | /******************************************************************************
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| 64 | * Verify readability of sectors on AHCI device.
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| 65 | */
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| 66 | int atapi_verify(IORBH _far *iorb, int slot)
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| 67 | {
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| 68 | iorb_seterr(iorb, IOERR_CMD_NOT_SUPPORTED);
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| 69 | return(-1);
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| 70 | }
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| 71 |
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| 72 | /******************************************************************************
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| 73 | * Write sectors to AHCI device.
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| 74 | */
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| 75 | int atapi_write(IORBH _far *iorb, int slot)
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| 76 | {
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| 77 | iorb_seterr(iorb, IOERR_CMD_NOT_SUPPORTED);
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| 78 | return(-1);
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| 79 | }
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| 80 |
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| 81 | /******************************************************************************
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| 82 | * Execute ATAPI command.
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| 83 | */
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| 84 | int atapi_execute_cdb(IORBH _far *iorb, int slot)
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| 85 | {
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| 86 | iorb_seterr(iorb, IOERR_CMD_NOT_SUPPORTED);
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| 87 | return(-1);
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| 88 | }
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| 89 |
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| 90 | /******************************************************************************
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| 91 | * Request sense information for a failed command.
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| 92 | *
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| 93 | * NOTE: This function must be called right after an ATAPI command has failed
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| 94 | * and before any other commands are queued on the corresponding device.
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| 95 | * This function is typically called in the port restart context hook
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| 96 | * which is triggered by an AHCI error interrupt.
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| 97 | *
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| 98 | */
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| 99 | int atapi_req_sense(IORBH _far *iorb, int slot)
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| 100 | {
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| 101 | iorb_seterr(iorb, IOERR_CMD_NOT_SUPPORTED);
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| 102 | return(-1);
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| 103 | }
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| 104 |
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