atavar.h revision 1.35
1 /* $NetBSD: atavar.h,v 1.35 2003/12/14 05:33:29 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Manuel Bouyer. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Manuel Bouyer. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _DEV_ATA_ATAVAR_H_ 33 #define _DEV_ATA_ATAVAR_H_ 34 35 /* High-level functions and structures used by both ATA and ATAPI devices */ 36 37 struct ataparams; 38 39 /* Datas common to drives and controller drivers */ 40 struct ata_drive_datas { 41 u_int8_t drive; /* drive number */ 42 int8_t ata_vers; /* ATA version supported */ 43 u_int16_t drive_flags; /* bitmask for drives present/absent and cap */ 44 45 #define DRIVE_ATA 0x0001 46 #define DRIVE_ATAPI 0x0002 47 #define DRIVE_OLD 0x0004 48 #define DRIVE (DRIVE_ATA|DRIVE_ATAPI|DRIVE_OLD) 49 #define DRIVE_CAP32 0x0008 50 #define DRIVE_DMA 0x0010 51 #define DRIVE_UDMA 0x0020 52 #define DRIVE_MODE 0x0040 /* the drive reported its mode */ 53 #define DRIVE_RESET 0x0080 /* reset the drive state at next xfer */ 54 #define DRIVE_DMAERR 0x0100 /* Udma transfer had crc error, don't try DMA */ 55 #define DRIVE_ATAPIST 0x0100 /* device is an ATAPI tape drive */ 56 57 /* 58 * Current setting of drive's PIO, DMA and UDMA modes. 59 * Is initialised by the disks drivers at attach time, and may be 60 * changed later by the controller's code if needed 61 */ 62 u_int8_t PIO_mode; /* Current setting of drive's PIO mode */ 63 u_int8_t DMA_mode; /* Current setting of drive's DMA mode */ 64 u_int8_t UDMA_mode; /* Current setting of drive's UDMA mode */ 65 66 /* Supported modes for this drive */ 67 u_int8_t PIO_cap; /* supported drive's PIO mode */ 68 u_int8_t DMA_cap; /* supported drive's DMA mode */ 69 u_int8_t UDMA_cap; /* supported drive's UDMA mode */ 70 71 /* 72 * Drive state. 73 * This is reset to 0 after a channel reset. 74 */ 75 u_int8_t state; 76 77 #define RESET 0 78 #define READY 1 79 80 /* numbers of xfers and DMA errs. Used by ata_dmaerr() */ 81 u_int8_t n_dmaerrs; 82 u_int32_t n_xfers; 83 84 /* Downgrade after NERRS_MAX errors in at most NXFER xfers */ 85 #define NERRS_MAX 4 86 #define NXFER 4000 87 88 /* Callbacks into the drive's driver. */ 89 void (*drv_done)(void *); /* transfer is done */ 90 91 struct device *drv_softc; /* ATA drives softc, if any */ 92 void *chnl_softc; /* channel softc */ 93 }; 94 95 /* User config flags that force (or disable) the use of a mode */ 96 #define ATA_CONFIG_PIO_MODES 0x0007 97 #define ATA_CONFIG_PIO_SET 0x0008 98 #define ATA_CONFIG_PIO_OFF 0 99 #define ATA_CONFIG_DMA_MODES 0x0070 100 #define ATA_CONFIG_DMA_SET 0x0080 101 #define ATA_CONFIG_DMA_DISABLE 0x0070 102 #define ATA_CONFIG_DMA_OFF 4 103 #define ATA_CONFIG_UDMA_MODES 0x0700 104 #define ATA_CONFIG_UDMA_SET 0x0800 105 #define ATA_CONFIG_UDMA_DISABLE 0x0700 106 #define ATA_CONFIG_UDMA_OFF 8 107 108 /* 109 * Parameters/state needed by the controller to perform an ATA bio. 110 */ 111 struct ata_bio { 112 volatile u_int16_t flags;/* cmd flags */ 113 #define ATA_NOSLEEP 0x0001 /* Can't sleep */ 114 #define ATA_POLL 0x0002 /* poll for completion */ 115 #define ATA_ITSDONE 0x0004 /* the transfer is as done as it gets */ 116 #define ATA_SINGLE 0x0008 /* transfer must be done in singlesector mode */ 117 #define ATA_LBA 0x0010 /* transfer uses LBA addressing */ 118 #define ATA_READ 0x0020 /* transfer is a read (otherwise a write) */ 119 #define ATA_CORR 0x0040 /* transfer had a corrected error */ 120 #define ATA_LBA48 0x0080 /* transfer uses 48-bit LBA addressing */ 121 int multi; /* # of blocks to transfer in multi-mode */ 122 struct disklabel *lp; /* pointer to drive's label info */ 123 daddr_t blkno; /* block addr */ 124 daddr_t blkdone;/* number of blks transferred */ 125 daddr_t nblks; /* number of block currently transferring */ 126 int nbytes; /* number of bytes currently transferring */ 127 long bcount; /* total number of bytes */ 128 char *databuf;/* data buffer address */ 129 volatile int error; 130 #define NOERROR 0 /* There was no error (r_error invalid) */ 131 #define ERROR 1 /* check r_error */ 132 #define ERR_DF 2 /* Drive fault */ 133 #define ERR_DMA 3 /* DMA error */ 134 #define TIMEOUT 4 /* device timed out */ 135 #define ERR_NODEV 5 /* device has been gone */ 136 u_int8_t r_error;/* copy of error register */ 137 daddr_t badsect[127];/* 126 plus trailing -1 marker */ 138 }; 139 140 /* 141 * ATA/ATAPI commands description 142 * 143 * This structure defines the interface between the ATA/ATAPI device driver 144 * and the controller for short commands. It contains the command's parameter, 145 * the len of data's to read/write (if any), and a function to call upon 146 * completion. 147 * If no sleep is allowed, the driver can poll for command completion. 148 * Once the command completed, if the error registed is valid, the flag 149 * AT_ERROR is set and the error register value is copied to r_error . 150 * A separate interface is needed for read/write or ATAPI packet commands 151 * (which need multiple interrupts per commands). 152 */ 153 struct wdc_command { 154 u_int8_t r_command; /* Parameters to upload to registers */ 155 u_int8_t r_head; 156 u_int16_t r_cyl; 157 u_int8_t r_sector; 158 u_int8_t r_count; 159 u_int8_t r_precomp; 160 u_int8_t r_st_bmask; /* status register mask to wait for before 161 command */ 162 u_int8_t r_st_pmask; /* status register mask to wait for after 163 command */ 164 u_int8_t r_error; /* error register after command done */ 165 volatile u_int16_t flags; 166 167 #define AT_READ 0x0001 /* There is data to read */ 168 #define AT_WRITE 0x0002 /* There is data to write (excl. with AT_READ) */ 169 #define AT_WAIT 0x0008 /* wait in controller code for command completion */ 170 #define AT_POLL 0x0010 /* poll for command completion (no interrupts) */ 171 #define AT_DONE 0x0020 /* command is done */ 172 #define AT_XFDONE 0x0040 /* data xfer is done */ 173 #define AT_ERROR 0x0080 /* command is done with error */ 174 #define AT_TIMEOU 0x0100 /* command timed out */ 175 #define AT_DF 0x0200 /* Drive fault */ 176 #define AT_READREG 0x0400 /* Read registers on completion */ 177 178 int timeout; /* timeout (in ms) */ 179 void *data; /* Data buffer address */ 180 int bcount; /* number of bytes to transfer */ 181 void (*callback)(void *); /* command to call once command completed */ 182 void *callback_arg; /* argument passed to *callback() */ 183 }; 184 185 /* 186 * ata_bustype. The first field must be compatible with scsipi_bustype, 187 * as it's used for autoconfig by both ata and atapi drivers. 188 */ 189 struct ata_bustype { 190 int bustype_type; /* symbolic name of type */ 191 int (*ata_bio)(struct ata_drive_datas *, struct ata_bio *); 192 void (*ata_reset_channel)(struct ata_drive_datas *, int); 193 int (*ata_exec_command)(struct ata_drive_datas *, 194 struct wdc_command *); 195 196 #define WDC_COMPLETE 0x01 197 #define WDC_QUEUED 0x02 198 #define WDC_TRY_AGAIN 0x03 199 200 int (*ata_get_params)(struct ata_drive_datas *, u_int8_t, 201 struct ataparams *); 202 int (*ata_addref)(struct ata_drive_datas *); 203 void (*ata_delref)(struct ata_drive_datas *); 204 void (*ata_killpending)(struct ata_drive_datas *); 205 }; 206 207 /* bustype_type */ /* XXX XXX XXX */ 208 /* #define SCSIPI_BUSTYPE_SCSI 0 */ 209 /* #define SCSIPI_BUSTYPE_ATAPI 1 */ 210 #define SCSIPI_BUSTYPE_ATA 2 211 212 /* 213 * Describe an ATA device. Has to be compatible with scsipi_channel, so 214 * start with a pointer to ata_bustype. 215 */ 216 struct ata_device { 217 const struct ata_bustype *adev_bustype; 218 int adev_channel; 219 int adev_openings; 220 struct ata_drive_datas *adev_drv_data; 221 }; 222 223 /* 224 * If WDSM_ATTR_ADVISORY, device exceeded intended design life period. 225 * If not WDSM_ATTR_ADVISORY, imminent data loss predicted. 226 */ 227 #define WDSM_ATTR_ADVISORY 1 228 229 /* 230 * If WDSM_ATTR_COLLECTIVE, attribute only updated in off-line testing. 231 * If not WDSM_ATTR_COLLECTIVE, attribute updated also in on-line testing. 232 */ 233 #define WDSM_ATTR_COLLECTIVE 2 234 235 struct ata_smart_attr { 236 u_int8_t id; /* attribute id number */ 237 u_int16_t flags; 238 u_int8_t value; /* attribute value */ 239 u_int8_t vendor_specific[8]; 240 } __attribute__((packed)); 241 242 struct ata_smart_attributes { 243 u_int16_t data_structure_revision; 244 struct ata_smart_attr attributes[30]; 245 u_int8_t offline_data_collection_status; 246 u_int8_t self_test_exec_status; 247 u_int16_t total_time_to_complete_off_line; 248 u_int8_t vendor_specific_366; 249 u_int8_t offline_data_collection_capability; 250 u_int16_t smart_capability; 251 u_int8_t errorlog_capability; 252 u_int8_t vendor_specific_371; 253 u_int8_t short_test_completion_time; 254 u_int8_t extend_test_completion_time; 255 u_int8_t reserved_374_385[12]; 256 u_int8_t vendor_specific_386_509[125]; 257 int8_t checksum; 258 } __attribute__((packed)); 259 260 struct ata_smart_thresh { 261 u_int8_t id; 262 u_int8_t value; 263 u_int8_t reserved[10]; 264 } __attribute__((packed)); 265 266 struct ata_smart_thresholds { 267 u_int16_t data_structure_revision; 268 struct ata_smart_thresh thresholds[30]; 269 u_int8_t reserved[18]; 270 u_int8_t vendor_specific[131]; 271 int8_t checksum; 272 } __attribute__((packed)); 273 274 int wdc_downgrade_mode(struct ata_drive_datas *, int); 275 276 struct ataparams; 277 int ata_get_params(struct ata_drive_datas *, u_int8_t, struct ataparams *); 278 int ata_set_mode(struct ata_drive_datas *, u_int8_t, u_int8_t); 279 /* return code for these cmds */ 280 #define CMD_OK 0 281 #define CMD_ERR 1 282 #define CMD_AGAIN 2 283 284 void ata_dmaerr(struct ata_drive_datas *, int); 285 286 #endif /* _DEV_ATA_ATAVAR_H_ */ 287
Indexes created Mon Sep 29 21:09:56 GMT 2025