/* $OpenBSD: ata.c,v 1.32 2011/04/08 00:34:56 deraadt Exp $ */ /* $NetBSD: ata.c,v 1.9 1999/04/15 09:41:09 bouyer Exp $ */ /* * Copyright (c) 1998, 2001 Manuel Bouyer. 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. * 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. * * 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define DEBUG_FUNCS 0x08 #define DEBUG_PROBE 0x10 #ifdef WDCDEBUG extern int wdcdebug_mask; /* init'ed in wdc.c */ #define WDCDEBUG_PRINT(args, level) do { \ if ((wdcdebug_mask & (level)) != 0) \ printf args; \ } while (0) #else #define WDCDEBUG_PRINT(args, level) #endif #define ATAPARAMS_SIZE 512 /* Get the disk's parameters */ int ata_get_params(struct ata_drive_datas *drvp, u_int8_t flags, struct ataparams *prms) { char *tb; struct wdc_command wdc_c; int i; u_int16_t *p; int ret; WDCDEBUG_PRINT(("ata_get_parms\n"), DEBUG_FUNCS); bzero(&wdc_c, sizeof(struct wdc_command)); if (drvp->drive_flags & DRIVE_ATA) { wdc_c.r_command = WDCC_IDENTIFY; wdc_c.r_st_bmask = WDCS_DRDY; wdc_c.r_st_pmask = 0; wdc_c.timeout = 3000; /* 3s */ } else if (drvp->drive_flags & DRIVE_ATAPI) { wdc_c.r_command = ATAPI_IDENTIFY_DEVICE; wdc_c.r_st_bmask = 0; wdc_c.r_st_pmask = 0; wdc_c.timeout = 10000; /* 10s */ } else { WDCDEBUG_PRINT(("wdc_ata_get_parms: no disks\n"), DEBUG_FUNCS|DEBUG_PROBE); return CMD_ERR; } tb = dma_alloc(ATAPARAMS_SIZE, PR_NOWAIT | PR_ZERO); if (tb == NULL) return CMD_AGAIN; wdc_c.flags = AT_READ | flags; wdc_c.data = tb; wdc_c.bcount = ATAPARAMS_SIZE; if ((ret = wdc_exec_command(drvp, &wdc_c)) != WDC_COMPLETE) { WDCDEBUG_PRINT(("%s: wdc_exec_command failed: %d\n", __func__, ret), DEBUG_PROBE); dma_free(tb, ATAPARAMS_SIZE); return CMD_AGAIN; } if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { WDCDEBUG_PRINT(("%s: IDENTIFY failed: 0x%x\n", __func__, wdc_c.flags), DEBUG_PROBE); dma_free(tb, ATAPARAMS_SIZE); return CMD_ERR; } else { #if BYTE_ORDER == BIG_ENDIAN /* All the fields in the params structure are 16-bit integers except for the ID strings which are char strings. The 16-bit integers are currently in memory in little-endian, regardless of architecture. So, they need to be swapped on big-endian architectures before they are accessed through the ataparams structure. The swaps below avoid touching the char strings. */ swap16_multi((u_int16_t *)tb, 10); swap16_multi((u_int16_t *)tb + 20, 3); swap16_multi((u_int16_t *)tb + 47, ATAPARAMS_SIZE / 2 - 47); #endif /* Read in parameter block. */ bcopy(tb, prms, sizeof(struct ataparams)); /* * Shuffle string byte order. * ATAPI Mitsumi and NEC drives don't need this. */ if ((prms->atap_config & WDC_CFG_ATAPI_MASK) == WDC_CFG_ATAPI && ((prms->atap_model[0] == 'N' && prms->atap_model[1] == 'E') || (prms->atap_model[0] == 'F' && prms->atap_model[1] == 'X'))) { dma_free(tb, ATAPARAMS_SIZE); return CMD_OK; } for (i = 0; i < sizeof(prms->atap_model); i += 2) { p = (u_short *)(prms->atap_model + i); *p = swap16(*p); } for (i = 0; i < sizeof(prms->atap_serial); i += 2) { p = (u_short *)(prms->atap_serial + i); *p = swap16(*p); } for (i = 0; i < sizeof(prms->atap_revision); i += 2) { p = (u_short *)(prms->atap_revision + i); *p = swap16(*p); } dma_free(tb, ATAPARAMS_SIZE); return CMD_OK; } } int ata_set_mode(struct ata_drive_datas *drvp, u_int8_t mode, u_int8_t flags) { struct wdc_command wdc_c; WDCDEBUG_PRINT(("%s: mode=0x%x, flags=0x%x\n", __func__, mode, flags), DEBUG_PROBE); bzero(&wdc_c, sizeof(struct wdc_command)); wdc_c.r_command = SET_FEATURES; wdc_c.r_st_bmask = 0; wdc_c.r_st_pmask = 0; wdc_c.r_precomp = WDSF_SET_MODE; wdc_c.r_count = mode; wdc_c.flags = flags; wdc_c.timeout = 1000; /* 1s */ if (wdc_exec_command(drvp, &wdc_c) != WDC_COMPLETE) return CMD_AGAIN; WDCDEBUG_PRINT(("%s: after wdc_exec_command() wdc_c.flags=0x%x\n", __func__, wdc_c.flags), DEBUG_PROBE); if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { return CMD_ERR; } return CMD_OK; } void ata_dmaerr(struct ata_drive_datas *drvp) { /* * Downgrade decision: if we get NERRS_MAX in NXFER. * We start with n_dmaerrs set to NERRS_MAX-1 so that the * first error within the first NXFER ops will immediately trigger * a downgrade. * If we got an error and n_xfers is bigger than NXFER reset counters. */ drvp->n_dmaerrs++; if (drvp->n_dmaerrs >= NERRS_MAX && drvp->n_xfers <= NXFER) { wdc_downgrade_mode(drvp); drvp->n_dmaerrs = NERRS_MAX-1; drvp->n_xfers = 0; return; } if (drvp->n_xfers > NXFER) { drvp->n_dmaerrs = 1; /* just got an error */ drvp->n_xfers = 1; /* restart counting from this error */ } } void ata_perror(struct ata_drive_datas *drvp, int errno, char *buf, size_t buf_len) { static char *errstr0_3[] = {"address mark not found", "track 0 not found", "aborted command", "media change requested", "id not found", "media changed", "uncorrectable data error", "bad block detected"}; static char *errstr4_5[] = {"", "no media/write protected", "aborted command", "media change requested", "id not found", "media changed", "uncorrectable data error", "interface CRC error"}; char **errstr; int i; char *sep = ""; size_t len = 0; if (drvp->ata_vers >= 4) errstr = errstr4_5; else errstr = errstr0_3; if (errno == 0) { snprintf(buf, buf_len, "error not notified"); } for (i = 0; i < 8; i++) { if (errno & (1 << i)) { snprintf(buf + len, buf_len - len, "%s%s", sep, errstr[i]); len = strlen(buf); sep = ", "; } } }