/* * linux/drivers/ide/ide-disk.c Version 1.18 Mar 05, 2003 * * Copyright (C) 1994-1998 Linus Torvalds & authors (see below) * Copyright (C) 1998-2002 Linux ATA Developemt * Andre Hedrick * Copyright (C) 2003 Red Hat * * */ /* * Mostly written by Mark Lord * and Gadi Oxman * and Andre Hedrick * * This is the IDE/ATA disk driver, as evolved from hd.c and ide.c. * * Version 1.00 move disk only code from ide.c to ide-disk.c * support optional byte-swapping of all data * Version 1.01 fix previous byte-swapping code * Version 1.02 remove ", LBA" from drive identification msgs * Version 1.03 fix display of id->buf_size for big-endian * Version 1.04 add /proc configurable settings and S.M.A.R.T support * Version 1.05 add capacity support for ATA3 >= 8GB * Version 1.06 get boot-up messages to show full cyl count * Version 1.07 disable door-locking if it fails * Version 1.08 fixed CHS/LBA translations for ATA4 > 8GB, * process of adding new ATA4 compliance. * fixed problems in allowing fdisk to see * the entire disk. * Version 1.09 added increment of rq->sector in ide_multwrite * added UDMA 3/4 reporting * Version 1.10 request queue changes, Ultra DMA 100 * Version 1.11 added 48-bit lba * Version 1.12 adding taskfile io access method * Version 1.13 added standby and flush-cache for notifier * Version 1.14 added acoustic-wcache * Version 1.15 convert all calls to ide_raw_taskfile * since args will return register content. * Version 1.16 added suspend-resume-checkpower * Version 1.17 do flush on standy, do flush on ATA < ATA6 * fix wcache setup. */ #define IDEDISK_VERSION "1.17" #undef REALLY_SLOW_IO /* most systems can safely undef this */ #include #include #include #include #include #include #include #include #include #include #include #include #include #define _IDE_DISK #include #include #include #include #include /* FIXME: some day we shouldnt need to look in here! */ #include "legacy/pdc4030.h" static int driver_blocked; static inline u32 idedisk_read_24 (ide_drive_t *drive) { #if 0 return (HWIF(drive)->INB(IDE_HCYL_REG)<<16) | (HWIF(drive)->INB(IDE_LCYL_REG)<<8) | HWIF(drive)->INB(IDE_SECTOR_REG); #else u8 hcyl = HWIF(drive)->INB(IDE_HCYL_REG); u8 lcyl = HWIF(drive)->INB(IDE_LCYL_REG); u8 sect = HWIF(drive)->INB(IDE_SECTOR_REG); return (hcyl<<16)|(lcyl<<8)|sect; #endif } static int idedisk_end_request(ide_drive_t *drive, int uptodate); /* * lba_capacity_is_ok() performs a sanity check on the claimed "lba_capacity" * value for this drive (from its reported identification information). * * Returns: 1 if lba_capacity looks sensible * 0 otherwise * * It is called only once for each drive. */ static int lba_capacity_is_ok (struct hd_driveid *id) { unsigned long lba_sects, chs_sects, head, tail; if ((id->command_set_2 & 0x0400) && (id->cfs_enable_2 & 0x0400)) { printk("48-bit Drive: %llu \n", id->lba_capacity_2); return 1; } /* * The ATA spec tells large drives to return * C/H/S = 16383/16/63 independent of their size. * Some drives can be jumpered to use 15 heads instead of 16. * Some drives can be jumpered to use 4092 cyls instead of 16383. */ if ((id->cyls == 16383 || (id->cyls == 4092 && id->cur_cyls == 16383)) && id->sectors == 63 && (id->heads == 15 || id->heads == 16) && (id->lba_capacity >= 16383*63*id->heads)) return 1; lba_sects = id->lba_capacity; chs_sects = id->cyls * id->heads * id->sectors; /* perform a rough sanity check on lba_sects: within 10% is OK */ if ((lba_sects - chs_sects) < chs_sects/10) return 1; /* some drives have the word order reversed */ head = ((lba_sects >> 16) & 0xffff); tail = (lba_sects & 0xffff); lba_sects = (head | (tail << 16)); if ((lba_sects - chs_sects) < chs_sects/10) { id->lba_capacity = lba_sects; return 1; /* lba_capacity is (now) good */ } return 0; /* lba_capacity value may be bad */ } #ifndef CONFIG_IDE_TASKFILE_IO /* * read_intr() is the handler for disk read/multread interrupts */ static ide_startstop_t read_intr (ide_drive_t *drive) { ide_hwif_t *hwif = HWIF(drive); u32 i = 0, nsect = 0, msect = drive->mult_count; struct request *rq; unsigned long flags; u8 stat; char *to; /* new way for dealing with premature shared PCI interrupts */ if (!OK_STAT(stat=hwif->INB(IDE_STATUS_REG),DATA_READY,BAD_R_STAT)) { if (stat & (ERR_STAT|DRQ_STAT)) { return DRIVER(drive)->error(drive, "read_intr", stat); } /* no data yet, so wait for another interrupt */ ide_set_handler(drive, &read_intr, WAIT_CMD, NULL); return ide_started; } read_next: rq = HWGROUP(drive)->rq; if (msect) { if ((nsect = rq->current_nr_sectors) > msect) nsect = msect; msect -= nsect; } else nsect = 1; to = ide_map_buffer(rq, &flags); taskfile_input_data(drive, to, nsect * SECTOR_WORDS); #ifdef DEBUG printk("%s: read: sectors(%ld-%ld), buffer=0x%08lx, remaining=%ld\n", drive->name, rq->sector, rq->sector+nsect-1, (unsigned long) rq->buffer+(nsect<<9), rq->nr_sectors-nsect); #endif ide_unmap_buffer(to, &flags); rq->sector += nsect; rq->errors = 0; i = (rq->nr_sectors -= nsect); if (((long)(rq->current_nr_sectors -= nsect)) <= 0) idedisk_end_request(drive, 1); /* * Another BH Page walker and DATA INTERGRITY Questioned on ERROR. * If passed back up on multimode read, BAD DATA could be ACKED * to FILE SYSTEMS above ... */ if (i > 0) { if (msect) goto read_next; ide_set_handler(drive, &read_intr, WAIT_CMD, NULL); return ide_started; } return ide_stopped; } /* * write_intr() is the handler for disk write interrupts */ static ide_startstop_t write_intr (ide_drive_t *drive) { ide_hwgroup_t *hwgroup = HWGROUP(drive); ide_hwif_t *hwif = HWIF(drive); struct request *rq = hwgroup->rq; u32 i = 0; u8 stat; if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG), DRIVE_READY, drive->bad_wstat)) { printk("%s: write_intr error1: nr_sectors=%ld, stat=0x%02x\n", drive->name, rq->nr_sectors, stat); } else { #ifdef DEBUG printk("%s: write: sector %ld, buffer=0x%08lx, remaining=%ld\n", drive->name, rq->sector, (unsigned long) rq->buffer, rq->nr_sectors-1); #endif if ((rq->nr_sectors == 1) ^ ((stat & DRQ_STAT) != 0)) { rq->sector++; rq->errors = 0; i = --rq->nr_sectors; --rq->current_nr_sectors; if (((long)rq->current_nr_sectors) <= 0) idedisk_end_request(drive, 1); if (i > 0) { unsigned long flags; char *to = ide_map_buffer(rq, &flags); taskfile_output_data(drive, to, SECTOR_WORDS); ide_unmap_buffer(to, &flags); ide_set_handler(drive, &write_intr, WAIT_CMD, NULL); return ide_started; } return ide_stopped; } /* the original code did this here (?) */ return ide_stopped; } return DRIVER(drive)->error(drive, "write_intr", stat); } /* * ide_multwrite() transfers a block of up to mcount sectors of data * to a drive as part of a disk multiple-sector write operation. * * Returns 0 on success. * * Note that we may be called from two contexts - the do_rw_disk context * and IRQ context. The IRQ can happen any time after we've output the * full "mcount" number of sectors, so we must make sure we update the * state _before_ we output the final part of the data! * * The update and return to BH is a BLOCK Layer Fakey to get more data * to satisfy the hardware atomic segment. If the hardware atomic segment * is shorter or smaller than the BH segment then we should be OKAY. * This is only valid if we can rewind the rq->current_nr_sectors counter. */ int ide_multwrite (ide_drive_t *drive, unsigned int mcount) { ide_hwgroup_t *hwgroup = HWGROUP(drive); struct request *rq = &hwgroup->wrq; do { char *buffer; int nsect = rq->current_nr_sectors; unsigned long flags; if (nsect > mcount) nsect = mcount; mcount -= nsect; buffer = ide_map_buffer(rq, &flags); rq->sector += nsect; rq->nr_sectors -= nsect; rq->current_nr_sectors -= nsect; /* Do we move to the next bh after this? */ if (!rq->current_nr_sectors) { struct buffer_head *bh = rq->bh->b_reqnext; /* end early early we ran out of requests */ if (!bh) { mcount = 0; } else { rq->bh = bh; rq->current_nr_sectors = bh->b_size >> 9; rq->hard_cur_sectors = rq->current_nr_sectors; rq->buffer = bh->b_data; } } /* * Ok, we're all setup for the interrupt * re-entering us on the last transfer. */ taskfile_output_data(drive, buffer, nsect<<7); ide_unmap_buffer(buffer, &flags); } while (mcount); return 0; } /* * multwrite_intr() is the handler for disk multwrite interrupts */ static ide_startstop_t multwrite_intr (ide_drive_t *drive) { ide_hwgroup_t *hwgroup = HWGROUP(drive); ide_hwif_t *hwif = HWIF(drive); struct request *rq = &hwgroup->wrq; u32 i = 0; u8 stat; if (OK_STAT(stat = hwif->INB(IDE_STATUS_REG), DRIVE_READY, drive->bad_wstat)) { if (stat & DRQ_STAT) { /* * The drive wants data. Remember rq is the copy * of the request */ if (rq->nr_sectors) { if (ide_multwrite(drive, drive->mult_count)) return ide_stopped; ide_set_handler(drive, &multwrite_intr, WAIT_CMD, NULL); return ide_started; } } else { /* * If the copy has all the blocks completed then * we can end the original request. */ if (!rq->nr_sectors) { /* all done? */ rq = hwgroup->rq; for (i = rq->nr_sectors; i > 0;) { i -= rq->current_nr_sectors; idedisk_end_request(drive, 1); } return ide_stopped; } } /* the original code did this here (?) */ return ide_stopped; } return DRIVER(drive)->error(drive, "multwrite_intr", stat); } /* * __ide_do_rw_disk() issues READ and WRITE commands to a disk, * using LBA if supported, or CHS otherwise, to address sectors. * It also takes care of issuing special DRIVE_CMDs. */ ide_startstop_t __ide_do_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long block) { ide_hwif_t *hwif = HWIF(drive); u8 lba48 = (drive->addressing == 1) ? 1 : 0; task_ioreg_t command = WIN_NOP; ata_nsector_t nsectors; nsectors.all = (u16) rq->nr_sectors; if (driver_blocked) panic("Request while ide driver is blocked?"); if (IDE_CONTROL_REG) hwif->OUTB(drive->ctl, IDE_CONTROL_REG); if (drive->select.b.lba) { if (drive->addressing == 1) { task_ioreg_t tasklets[10]; tasklets[0] = 0; tasklets[1] = 0; tasklets[2] = nsectors.b.low; tasklets[3] = nsectors.b.high; tasklets[4] = (task_ioreg_t) block; tasklets[5] = (task_ioreg_t) (block>>8); tasklets[6] = (task_ioreg_t) (block>>16); tasklets[7] = (task_ioreg_t) (block>>24); tasklets[8] = (task_ioreg_t) 0; tasklets[9] = (task_ioreg_t) 0; // tasklets[8] = (task_ioreg_t) (block>>32); // tasklets[9] = (task_ioreg_t) (block>>40); #ifdef DEBUG printk("%s: %sing: LBAsect=%lu, sectors=%ld, " "buffer=0x%08lx, LBAsect=0x%012lx\n", drive->name, (rq->cmd==READ)?"read":"writ", block, rq->nr_sectors, (unsigned long) rq->buffer, block); printk("%s: 0x%02x%02x 0x%02x%02x%02x%02x%02x%02x\n", drive->name, tasklets[3], tasklets[2], tasklets[9], tasklets[8], tasklets[7], tasklets[6], tasklets[5], tasklets[4]); #endif hwif->OUTB(tasklets[1], IDE_FEATURE_REG); hwif->OUTB(tasklets[3], IDE_NSECTOR_REG); hwif->OUTB(tasklets[7], IDE_SECTOR_REG); hwif->OUTB(tasklets[8], IDE_LCYL_REG); hwif->OUTB(tasklets[9], IDE_HCYL_REG); hwif->OUTB(tasklets[0], IDE_FEATURE_REG); hwif->OUTB(tasklets[2], IDE_NSECTOR_REG); hwif->OUTB(tasklets[4], IDE_SECTOR_REG); hwif->OUTB(tasklets[5], IDE_LCYL_REG); hwif->OUTB(tasklets[6], IDE_HCYL_REG); hwif->OUTB(0x00|drive->select.all,IDE_SELECT_REG); } else { #ifdef DEBUG printk("%s: %sing: LBAsect=%ld, sectors=%ld, " "buffer=0x%08lx\n", drive->name, (rq->cmd==READ)?"read":"writ", block, rq->nr_sectors, (unsigned long) rq->buffer); #endif hwif->OUTB(0x00, IDE_FEATURE_REG); hwif->OUTB(nsectors.b.low, IDE_NSECTOR_REG); hwif->OUTB(block, IDE_SECTOR_REG); hwif->OUTB(block>>=8, IDE_LCYL_REG); hwif->OUTB(block>>=8, IDE_HCYL_REG); hwif->OUTB(((block>>8)&0x0f)|drive->select.all,IDE_SELECT_REG); } } else { unsigned int sect,head,cyl,track; track = block / drive->sect; sect = block % drive->sect + 1; hwif->OUTB(sect, IDE_SECTOR_REG); head = track % drive->head; cyl = track / drive->head; hwif->OUTB(0x00, IDE_FEATURE_REG); hwif->OUTB(nsectors.b.low, IDE_NSECTOR_REG); hwif->OUTB(cyl, IDE_LCYL_REG); hwif->OUTB(cyl>>8, IDE_HCYL_REG); hwif->OUTB(head|drive->select.all,IDE_SELECT_REG); #ifdef DEBUG printk("%s: %sing: CHS=%d/%d/%d, sectors=%ld, buffer=0x%08lx\n", drive->name, (rq->cmd==READ)?"read":"writ", cyl, head, sect, rq->nr_sectors, (unsigned long) rq->buffer); #endif } if (rq_data_dir(rq) == READ) { #ifdef CONFIG_BLK_DEV_IDEDMA if (drive->using_dma && !hwif->ide_dma_read(drive)) return ide_started; #endif /* CONFIG_BLK_DEV_IDEDMA */ if (HWGROUP(drive)->handler != NULL) BUG(); command = ((drive->mult_count) ? ((lba48) ? WIN_MULTREAD_EXT : WIN_MULTREAD) : ((lba48) ? WIN_READ_EXT : WIN_READ)); ide_execute_command(drive, command, &read_intr, WAIT_CMD, NULL); return ide_started; } else if (rq_data_dir(rq) == WRITE) { ide_startstop_t startstop; #ifdef CONFIG_BLK_DEV_IDEDMA if (drive->using_dma && !(HWIF(drive)->ide_dma_write(drive))) return ide_started; #endif /* CONFIG_BLK_DEV_IDEDMA */ command = ((drive->mult_count) ? ((lba48) ? WIN_MULTWRITE_EXT : WIN_MULTWRITE) : ((lba48) ? WIN_WRITE_EXT : WIN_WRITE)); hwif->OUTB(command, IDE_COMMAND_REG); if (ide_wait_stat(&startstop, drive, DATA_READY, drive->bad_wstat, WAIT_DRQ)) { printk(KERN_ERR "%s: no DRQ after issuing %s\n", drive->name, drive->mult_count ? "MULTWRITE" : "WRITE"); return startstop; } if (!drive->unmask) local_irq_disable(); if (drive->mult_count) { ide_hwgroup_t *hwgroup = HWGROUP(drive); /* * Ugh.. this part looks ugly because we MUST set up * the interrupt handler before outputting the first block * of data to be written. If we hit an error (corrupted buffer list) * in ide_multwrite(), then we need to remove the handler/timer * before returning. Fortunately, this NEVER happens (right?). * * Except when you get an error it seems... * * MAJOR DATA INTEGRITY BUG !!! only if we error */ hwgroup->wrq = *rq; /* scratchpad */ ide_set_handler(drive, &multwrite_intr, WAIT_CMD, NULL); if (ide_multwrite(drive, drive->mult_count)) { unsigned long flags; spin_lock_irqsave(&io_request_lock, flags); hwgroup->handler = NULL; del_timer(&hwgroup->timer); spin_unlock_irqrestore(&io_request_lock, flags); return ide_stopped; } } else { unsigned long flags; char *to = ide_map_buffer(rq, &flags); ide_set_handler(drive, &write_intr, WAIT_CMD, NULL); taskfile_output_data(drive, to, SECTOR_WORDS); ide_unmap_buffer(to, &flags); } return ide_started; } printk(KERN_ERR "%s: bad command: %d\n", drive->name, rq->cmd); idedisk_end_request(drive, 0); return ide_stopped; } #else /* CONFIG_IDE_TASKFILE_IO */ static ide_startstop_t chs_rw_disk(ide_drive_t *, struct request *, unsigned long); static ide_startstop_t lba_28_rw_disk(ide_drive_t *, struct request *, unsigned long); static ide_startstop_t lba_48_rw_disk(ide_drive_t *, struct request *, unsigned long long); /* * __ide_do_rw_disk() issues READ and WRITE commands to a disk, * using LBA if supported, or CHS otherwise, to address sectors. * It also takes care of issuing special DRIVE_CMDs. */ ide_startstop_t __ide_do_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long block) { if (!blk_fs_request(rq)) { printk(KERN_ERR "%s: bad command: %d\n", drive->name, rq->cmd); idedisk_end_request(drive, 0); return ide_stopped; } /* * 268435455 == 137439 MB or 28bit limit * * need to add split taskfile operations based on 28bit threshold. */ if (drive->addressing == 1) /* 48-bit LBA */ return lba_48_rw_disk(drive, rq, (unsigned long long) block); if (drive->select.b.lba) /* 28-bit LBA */ return lba_28_rw_disk(drive, rq, (unsigned long) block); /* 28-bit CHS : DIE DIE DIE piece of legacy crap!!! */ return chs_rw_disk(drive, rq, (unsigned long) block); } static task_ioreg_t get_command (ide_drive_t *drive, int cmd) { int lba48bit = (drive->id->cfs_enable_2 & 0x0400) ? 1 : 0; #if 1 lba48bit = (drive->addressing == 1) ? 1 : 0; #endif if ((cmd == READ) && (drive->using_dma)) return (lba48bit) ? WIN_READDMA_EXT : WIN_READDMA; else if ((cmd == READ) && (drive->mult_count)) return (lba48bit) ? WIN_MULTREAD_EXT : WIN_MULTREAD; else if (cmd == READ) return (lba48bit) ? WIN_READ_EXT : WIN_READ; else if ((cmd == WRITE) && (drive->using_dma)) return (lba48bit) ? WIN_WRITEDMA_EXT : WIN_WRITEDMA; else if ((cmd == WRITE) && (drive->mult_count)) return (lba48bit) ? WIN_MULTWRITE_EXT : WIN_MULTWRITE; else if (cmd == WRITE) return (lba48bit) ? WIN_WRITE_EXT : WIN_WRITE; else return WIN_NOP; } static ide_startstop_t chs_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long block) { ide_task_t args; int sectors; ata_nsector_t nsectors; task_ioreg_t command = get_command(drive, rq_data_dir(rq)); unsigned int track = (block / drive->sect); unsigned int sect = (block % drive->sect) + 1; unsigned int head = (track % drive->head); unsigned int cyl = (track / drive->head); nsectors.all = (u16) rq->nr_sectors; #ifdef DEBUG printk("%s: %sing: ", drive->name, (rq_data_dir(rq)==READ) ? "read" : "writ"); printk("CHS=%d/%d/%d, ", cyl, head, sect); printk("sectors=%ld, ", rq->nr_sectors); printk("buffer=0x%08lx\n", (unsigned long) rq->buffer); #endif memset(&args, 0, sizeof(ide_task_t)); sectors = (rq->nr_sectors == 256) ? 0x00 : rq->nr_sectors; args.tfRegister[IDE_NSECTOR_OFFSET] = sectors; args.tfRegister[IDE_SECTOR_OFFSET] = sect; args.tfRegister[IDE_LCYL_OFFSET] = cyl; args.tfRegister[IDE_HCYL_OFFSET] = (cyl>>8); args.tfRegister[IDE_SELECT_OFFSET] = head; args.tfRegister[IDE_SELECT_OFFSET] |= drive->select.all; args.tfRegister[IDE_COMMAND_OFFSET] = command; args.command_type = ide_cmd_type_parser(&args); args.rq = (struct request *) rq; rq->special = (ide_task_t *)&args; return do_rw_taskfile(drive, &args); } static ide_startstop_t lba_28_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long block) { ide_task_t args; int sectors; ata_nsector_t nsectors; task_ioreg_t command = get_command(drive, rq_data_dir(rq)); nsectors.all = (u16) rq->nr_sectors; #ifdef DEBUG printk("%s: %sing: ", drive->name, (rq_data_dir(rq)==READ) ? "read" : "writ"); printk("LBAsect=%lld, ", block); printk("sectors=%ld, ", rq->nr_sectors); printk("buffer=0x%08lx\n", (unsigned long) rq->buffer); #endif memset(&args, 0, sizeof(ide_task_t)); sectors = (rq->nr_sectors == 256) ? 0x00 : rq->nr_sectors; args.tfRegister[IDE_NSECTOR_OFFSET] = sectors; args.tfRegister[IDE_SECTOR_OFFSET] = block; args.tfRegister[IDE_LCYL_OFFSET] = (block>>=8); args.tfRegister[IDE_HCYL_OFFSET] = (block>>=8); args.tfRegister[IDE_SELECT_OFFSET] = ((block>>8)&0x0f); args.tfRegister[IDE_SELECT_OFFSET] |= drive->select.all; args.tfRegister[IDE_COMMAND_OFFSET] = command; args.command_type = ide_cmd_type_parser(&args); args.rq = (struct request *) rq; rq->special = (ide_task_t *)&args; return do_rw_taskfile(drive, &args); } /* * 268435455 == 137439 MB or 28bit limit * 320173056 == 163929 MB or 48bit addressing * 1073741822 == 549756 MB or 48bit addressing fake drive */ static ide_startstop_t lba_48_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long long block) { ide_task_t args; int sectors; ata_nsector_t nsectors; task_ioreg_t command = get_command(drive, rq_data_dir(rq)); nsectors.all = (u16) rq->nr_sectors; #ifdef DEBUG printk("%s: %sing: ", drive->name, (rq_data_dir(rq)==READ) ? "read" : "writ"); printk("LBAsect=%lld, ", block); printk("sectors=%ld, ", rq->nr_sectors); printk("buffer=0x%08lx\n", (unsigned long) rq->buffer); #endif memset(&args, 0, sizeof(ide_task_t)); sectors = (rq->nr_sectors == 65536) ? 0 : rq->nr_sectors; args.tfRegister[IDE_NSECTOR_OFFSET] = sectors; args.tfRegister[IDE_SECTOR_OFFSET] = block; /* low lba */ args.tfRegister[IDE_LCYL_OFFSET] = (block>>=8); /* mid lba */ args.tfRegister[IDE_HCYL_OFFSET] = (block>>=8); /* hi lba */ args.tfRegister[IDE_SELECT_OFFSET] = drive->select.all; args.tfRegister[IDE_COMMAND_OFFSET] = command; args.hobRegister[IDE_NSECTOR_OFFSET_HOB]= sectors >> 8; args.hobRegister[IDE_SECTOR_OFFSET_HOB] = (block>>=8); /* low lba */ args.hobRegister[IDE_LCYL_OFFSET_HOB] = (block>>=8); /* mid lba */ args.hobRegister[IDE_HCYL_OFFSET_HOB] = (block>>=8); /* hi lba */ args.hobRegister[IDE_SELECT_OFFSET_HOB] = drive->select.all; args.hobRegister[IDE_CONTROL_OFFSET_HOB]= (drive->ctl|0x80); args.command_type = ide_cmd_type_parser(&args); args.rq = (struct request *) rq; rq->special = (ide_task_t *)&args; return do_rw_taskfile(drive, &args); } #endif /* CONFIG_IDE_TASKFILE_IO */ static ide_startstop_t ide_do_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long block) { ide_hwif_t *hwif = HWIF(drive); if (hwif->rw_disk) return hwif->rw_disk(drive, rq, block); else return __ide_do_rw_disk(drive, rq, block); } EXPORT_SYMBOL_GPL(__ide_do_rw_disk); static int idedisk_open (struct inode *inode, struct file *filp, ide_drive_t *drive) { MOD_INC_USE_COUNT; if (drive->removable && drive->usage == 1) { ide_task_t args; int cf; memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_COMMAND_OFFSET] = WIN_DOORLOCK; args.command_type = ide_cmd_type_parser(&args); check_disk_change(inode->i_rdev); /* * Ignore the return code from door_lock, * since the open() has already succeeded, * and the door_lock is irrelevant at this point. */ if (drive->doorlocking && ide_raw_taskfile(drive, &args, NULL)) drive->doorlocking = 0; drive->wcache = 0; /* Cache enabled ? */ if (drive->id->csfo & 1) drive->wcache = 1; /* Cache command set available ? */ if (drive->id->cfs_enable_1 & (1<<5)) drive->wcache = 1; /* ATA6 cache extended commands */ cf = drive->id->command_set_2 >> 24; if((cf & 0xC0) == 0x40 && (cf & 0x30) != 0) drive->wcache = 1; } return 0; } static int do_idedisk_flushcache(ide_drive_t *drive); static int ide_cacheflush_p(ide_drive_t *drive) { if(drive->wcache) { if (do_idedisk_flushcache(drive)) { printk (KERN_INFO "%s: Write Cache FAILED Flushing!\n", drive->name); return -EIO; } return 1; } return 0; } static void idedisk_release (struct inode *inode, struct file *filp, ide_drive_t *drive) { if (drive->removable && !drive->usage) { ide_task_t args; memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_COMMAND_OFFSET] = WIN_DOORUNLOCK; args.command_type = ide_cmd_type_parser(&args); invalidate_bdev(inode->i_bdev, 0); if (drive->doorlocking && ide_raw_taskfile(drive, &args, NULL)) drive->doorlocking = 0; } ide_cacheflush_p(drive); MOD_DEC_USE_COUNT; } static int idedisk_media_change (ide_drive_t *drive) { /* if removable, always assume it was changed */ return drive->removable; } static void idedisk_revalidate (ide_drive_t *drive) { grok_partitions(HWIF(drive)->gd, drive->select.b.unit, 1<rq; /* * decide whether to reenable DMA -- 3 is a random magic for now, * if we DMA timeout more than 3 times, just stay in PIO */ if (drive->state == DMA_PIO_RETRY && drive->retry_pio <= 3) { drive->state = 0; HWGROUP(drive)->hwif->ide_dma_on(drive); } if (!end_that_request_first(rq, uptodate, drive->name)) { add_blkdev_randomness(MAJOR(rq->rq_dev)); blkdev_dequeue_request(rq); HWGROUP(drive)->rq = NULL; end_that_request_last(rq); ret = 0; } spin_unlock_irqrestore(&io_request_lock, flags); return ret; } static u8 idedisk_dump_status (ide_drive_t *drive, const char *msg, u8 stat) { ide_hwif_t *hwif = HWIF(drive); unsigned long flags; u8 err = 0; local_irq_set(flags); printk("%s: %s: status=0x%02x", drive->name, msg, stat); #if FANCY_STATUS_DUMPS printk(" { "); if (stat & BUSY_STAT) printk("Busy "); else { if (stat & READY_STAT) printk("DriveReady "); if (stat & WRERR_STAT) printk("DeviceFault "); if (stat & SEEK_STAT) printk("SeekComplete "); if (stat & DRQ_STAT) printk("DataRequest "); if (stat & ECC_STAT) printk("CorrectedError "); if (stat & INDEX_STAT) printk("Index "); if (stat & ERR_STAT) printk("Error "); } printk("}"); #endif /* FANCY_STATUS_DUMPS */ printk("\n"); if ((stat & (BUSY_STAT|ERR_STAT)) == ERR_STAT) { err = hwif->INB(IDE_ERROR_REG); printk("%s: %s: error=0x%02x", drive->name, msg, err); #if FANCY_STATUS_DUMPS printk(" { "); if (err & ABRT_ERR) printk("DriveStatusError "); if (err & ICRC_ERR) printk("Bad%s ", (err & ABRT_ERR) ? "CRC" : "Sector"); if (err & ECC_ERR) printk("UncorrectableError "); if (err & ID_ERR) printk("SectorIdNotFound "); if (err & TRK0_ERR) printk("TrackZeroNotFound "); if (err & MARK_ERR) printk("AddrMarkNotFound "); printk("}"); if ((err & (BBD_ERR | ABRT_ERR)) == BBD_ERR || (err & (ECC_ERR|ID_ERR|MARK_ERR))) { if (drive->addressing == 1) { __u64 sectors = 0; u32 low = 0, high = 0; low = idedisk_read_24(drive); hwif->OUTB(drive->ctl|0x80, IDE_CONTROL_REG); high = idedisk_read_24(drive); sectors = ((__u64)high << 24) | low; printk(", LBAsect=%llu, high=%d, low=%d", (unsigned long long) sectors, high, low); } else { u8 cur = hwif->INB(IDE_SELECT_REG); if (cur & 0x40) { /* using LBA? */ printk(", LBAsect=%ld", (unsigned long) ((cur&0xf)<<24) |(hwif->INB(IDE_HCYL_REG)<<16) |(hwif->INB(IDE_LCYL_REG)<<8) | hwif->INB(IDE_SECTOR_REG)); } else { printk(", CHS=%d/%d/%d", (hwif->INB(IDE_HCYL_REG)<<8) + hwif->INB(IDE_LCYL_REG), cur & 0xf, hwif->INB(IDE_SECTOR_REG)); } } if (HWGROUP(drive) && HWGROUP(drive)->rq) printk(", sector=%ld", HWGROUP(drive)->rq->sector); } } #endif /* FANCY_STATUS_DUMPS */ printk("\n"); local_irq_restore(flags); return err; } ide_startstop_t idedisk_error (ide_drive_t *drive, const char *msg, u8 stat) { ide_hwif_t *hwif; struct request *rq; u8 err; int i = (drive->mult_count ? drive->mult_count : 1) * SECTOR_WORDS; err = idedisk_dump_status(drive, msg, stat); if (drive == NULL || (rq = HWGROUP(drive)->rq) == NULL) return ide_stopped; hwif = HWIF(drive); /* retry only "normal" I/O: */ switch (rq->cmd) { case IDE_DRIVE_CMD: case IDE_DRIVE_TASK: case IDE_DRIVE_TASKFILE: rq->errors = 1; ide_end_drive_cmd(drive, stat, err); return ide_stopped; #if 0 case IDE_DRIVE_TASKFILE: rq->errors = 1; ide_end_taskfile(drive, stat, err); return ide_stopped; #endif default: break; } if (stat & BUSY_STAT || ((stat & WRERR_STAT) && !drive->nowerr)) { /* other bits are useless when BUSY */ rq->errors |= ERROR_RESET; } else if (stat & ERR_STAT) { /* err has different meaning on cdrom and tape */ if (err == ABRT_ERR) { if (drive->select.b.lba && /* some newer drives don't support WIN_SPECIFY */ hwif->INB(IDE_COMMAND_REG) == WIN_SPECIFY) return ide_stopped; } else if ((err & BAD_CRC) == BAD_CRC) { /* UDMA crc error, just retry the operation */ drive->crc_count++; } else if (err & (BBD_ERR | ECC_ERR)) { /* retries won't help these */ rq->errors = ERROR_MAX; } else if (err & TRK0_ERR) { /* help it find track zero */ rq->errors |= ERROR_RECAL; } } if ((stat & DRQ_STAT) && rq_data_dir(rq) == READ) { /* * try_to_flush_leftover_data() is invoked in response to * a drive unexpectedly having its DRQ_STAT bit set. As * an alternative to resetting the drive, this routine * tries to clear the condition by read a sector's worth * of data from the drive. Of course, this may not help * if the drive is *waiting* for data from *us*. */ while (i > 0) { u32 buffer[16]; unsigned int wcount = (i > 16) ? 16 : i; i -= wcount; taskfile_input_data(drive, buffer, wcount); } } if (hwif->INB(IDE_STATUS_REG) & (BUSY_STAT|DRQ_STAT)) { /* force an abort */ hwif->OUTB(WIN_IDLEIMMEDIATE,IDE_COMMAND_REG); } if (rq->errors >= ERROR_MAX) DRIVER(drive)->end_request(drive, 0); else { if ((rq->errors & ERROR_RESET) == ERROR_RESET) { ++rq->errors; return ide_do_reset(drive); } if ((rq->errors & ERROR_RECAL) == ERROR_RECAL) drive->special.b.recalibrate = 1; ++rq->errors; } return ide_stopped; } ide_startstop_t idedisk_abort(ide_drive_t *drive, const char *msg) { ide_hwif_t *hwif; struct request *rq; if (drive == NULL || (rq = HWGROUP(drive)->rq) == NULL) return ide_stopped; hwif = HWIF(drive); /* retry only "normal" I/O: */ switch (rq->cmd) { case IDE_DRIVE_CMD: case IDE_DRIVE_TASK: case IDE_DRIVE_TASKFILE: rq->errors = 1; ide_end_drive_cmd(drive, BUSY_STAT, 0); return ide_stopped; #if 0 case IDE_DRIVE_TASKFILE: rq->errors = 1; ide_end_taskfile(drive, BUSY_STAT, 0); return ide_stopped; #endif default: break; } rq->errors |= ERROR_RESET; DRIVER(drive)->end_request(drive, 0); return ide_stopped; } /* * Queries for true maximum capacity of the drive. * Returns maximum LBA address (> 0) of the drive, 0 if failed. */ static unsigned long idedisk_read_native_max_address(ide_drive_t *drive) { ide_task_t args; unsigned long addr = 0; /* Create IDE/ATA command request structure */ memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_SELECT_OFFSET] = 0x40; args.tfRegister[IDE_COMMAND_OFFSET] = WIN_READ_NATIVE_MAX; args.command_type = ide_cmd_type_parser(&args); /* submit command request */ ide_raw_taskfile(drive, &args, NULL); /* if OK, compute maximum address value */ if ((args.tfRegister[IDE_STATUS_OFFSET] & 0x01) == 0) { addr = ((args.tfRegister[IDE_SELECT_OFFSET] & 0x0f) << 24) | ((args.tfRegister[ IDE_HCYL_OFFSET] ) << 16) | ((args.tfRegister[ IDE_LCYL_OFFSET] ) << 8) | ((args.tfRegister[IDE_SECTOR_OFFSET] )); } addr++; /* since the return value is (maxlba - 1), we add 1 */ return addr; } static unsigned long long idedisk_read_native_max_address_ext(ide_drive_t *drive) { ide_task_t args; unsigned long long addr = 0; /* Create IDE/ATA command request structure */ memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_SELECT_OFFSET] = 0x40; args.tfRegister[IDE_COMMAND_OFFSET] = WIN_READ_NATIVE_MAX_EXT; args.command_type = ide_cmd_type_parser(&args); /* submit command request */ ide_raw_taskfile(drive, &args, NULL); /* if OK, compute maximum address value */ if ((args.tfRegister[IDE_STATUS_OFFSET] & 0x01) == 0) { u32 high = ((args.hobRegister[IDE_HCYL_OFFSET_HOB])<<16) | ((args.hobRegister[IDE_LCYL_OFFSET_HOB])<<8) | (args.hobRegister[IDE_SECTOR_OFFSET_HOB]); u32 low = ((args.tfRegister[IDE_HCYL_OFFSET])<<16) | ((args.tfRegister[IDE_LCYL_OFFSET])<<8) | (args.tfRegister[IDE_SECTOR_OFFSET]); addr = ((__u64)high << 24) | low; } addr++; /* since the return value is (maxlba - 1), we add 1 */ return addr; } #ifdef CONFIG_IDEDISK_STROKE /* * Sets maximum virtual LBA address of the drive. * Returns new maximum virtual LBA address (> 0) or 0 on failure. */ static unsigned long idedisk_set_max_address(ide_drive_t *drive, unsigned long addr_req) { ide_task_t args; unsigned long addr_set = 0; addr_req--; /* Create IDE/ATA command request structure */ memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_SECTOR_OFFSET] = ((addr_req >> 0) & 0xff); args.tfRegister[IDE_LCYL_OFFSET] = ((addr_req >> 8) & 0xff); args.tfRegister[IDE_HCYL_OFFSET] = ((addr_req >> 16) & 0xff); args.tfRegister[IDE_SELECT_OFFSET] = ((addr_req >> 24) & 0x0f) | 0x40; args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SET_MAX; args.command_type = ide_cmd_type_parser(&args); /* submit command request */ ide_raw_taskfile(drive, &args, NULL); /* if OK, read new maximum address value */ if ((args.tfRegister[IDE_STATUS_OFFSET] & 0x01) == 0) { addr_set = ((args.tfRegister[IDE_SELECT_OFFSET] & 0x0f) << 24) | ((args.tfRegister[ IDE_HCYL_OFFSET] ) << 16) | ((args.tfRegister[ IDE_LCYL_OFFSET] ) << 8) | ((args.tfRegister[IDE_SECTOR_OFFSET] )); } addr_set++; return addr_set; } static unsigned long long idedisk_set_max_address_ext(ide_drive_t *drive, unsigned long long addr_req) { ide_task_t args; unsigned long long addr_set = 0; addr_req--; /* Create IDE/ATA command request structure */ memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_SECTOR_OFFSET] = ((addr_req >> 0) & 0xff); args.tfRegister[IDE_LCYL_OFFSET] = ((addr_req >>= 8) & 0xff); args.tfRegister[IDE_HCYL_OFFSET] = ((addr_req >>= 8) & 0xff); args.tfRegister[IDE_SELECT_OFFSET] = 0x40; args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SET_MAX_EXT; args.hobRegister[IDE_SECTOR_OFFSET_HOB] = ((addr_req >>= 8) & 0xff); args.hobRegister[IDE_LCYL_OFFSET_HOB] = ((addr_req >>= 8) & 0xff); args.hobRegister[IDE_HCYL_OFFSET_HOB] = ((addr_req >>= 8) & 0xff); args.hobRegister[IDE_SELECT_OFFSET_HOB] = 0x40; args.hobRegister[IDE_CONTROL_OFFSET_HOB]= (drive->ctl|0x80); args.command_type = ide_cmd_type_parser(&args); /* submit command request */ ide_raw_taskfile(drive, &args, NULL); /* if OK, compute maximum address value */ if ((args.tfRegister[IDE_STATUS_OFFSET] & 0x01) == 0) { u32 high = ((args.hobRegister[IDE_HCYL_OFFSET_HOB])<<16) | ((args.hobRegister[IDE_LCYL_OFFSET_HOB])<<8) | (args.hobRegister[IDE_SECTOR_OFFSET_HOB]); u32 low = ((args.tfRegister[IDE_HCYL_OFFSET])<<16) | ((args.tfRegister[IDE_LCYL_OFFSET])<<8) | (args.tfRegister[IDE_SECTOR_OFFSET]); addr_set = ((__u64)high << 24) | low; } return addr_set; } #endif /* CONFIG_IDEDISK_STROKE */ /* * Tests if the drive supports Host Protected Area feature. * Returns true if supported, false otherwise. */ static inline int idedisk_supports_host_protected_area(ide_drive_t *drive) { int flag = (drive->id->cfs_enable_1 & 0x0400) ? 1 : 0; if (flag) printk("%s: host protected area => %d\n", drive->name, flag); return flag; } /* * Compute drive->capacity, the full capacity of the drive * Called with drive->id != NULL. * * To compute capacity, this uses either of * * 1. CHS value set by user (whatever user sets will be trusted) * 2. LBA value from target drive (require new ATA feature) * 3. LBA value from system BIOS (new one is OK, old one may break) * 4. CHS value from system BIOS (traditional style) * * in above order (i.e., if value of higher priority is available, * reset will be ignored). */ #define IDE_STROKE_LIMIT (32000*1024*2) static void init_idedisk_capacity (ide_drive_t *drive) { struct hd_driveid *id = drive->id; unsigned long capacity = drive->cyl * drive->head * drive->sect; int have_setmax = idedisk_supports_host_protected_area(drive); unsigned long set_max = (have_setmax ? idedisk_read_native_max_address(drive) : 0); unsigned long long capacity_2 = capacity; unsigned long long set_max_ext; drive->capacity48 = 0; drive->select.b.lba = 0; if (id->cfs_enable_2 & 0x0400) { capacity_2 = id->lba_capacity_2; if (!drive->forced_geom) { drive->bios_head = 255; drive->bios_sect = 63; } drive->head = drive->bios_head; drive->sect = drive->bios_sect; drive->cyl = (unsigned int) capacity_2 / (drive->head * drive->sect); drive->select.b.lba = 1; set_max_ext = idedisk_read_native_max_address_ext(drive); if (set_max_ext > capacity_2 && capacity_2 > IDE_STROKE_LIMIT) { #ifdef CONFIG_IDEDISK_STROKE set_max_ext = idedisk_read_native_max_address_ext(drive); set_max_ext = idedisk_set_max_address_ext(drive, set_max_ext); if (set_max_ext) { drive->capacity48 = capacity_2 = set_max_ext; drive->cyl = (unsigned int) set_max_ext / (drive->head * drive->sect); drive->select.b.lba = 1; drive->id->lba_capacity_2 = capacity_2; } #else /* !CONFIG_IDEDISK_STROKE */ printk(KERN_INFO "%s: setmax_ext LBA %llu, native %llu\n", drive->name, set_max_ext, capacity_2); #endif /* CONFIG_IDEDISK_STROKE */ } drive->cyl = (unsigned int) capacity_2 / (drive->head * drive->sect); drive->bios_cyl = drive->cyl; drive->capacity48 = capacity_2; drive->capacity = (unsigned long) capacity_2; goto check_capacity48; /* Determine capacity, and use LBA if the drive properly supports it */ } else if ((id->capability & 2) && lba_capacity_is_ok(id)) { capacity = id->lba_capacity; drive->cyl = capacity / (drive->head * drive->sect); drive->select.b.lba = 1; } if (set_max > capacity && capacity > IDE_STROKE_LIMIT) { #ifdef CONFIG_IDEDISK_STROKE set_max = idedisk_read_native_max_address(drive); set_max = idedisk_set_max_address(drive, set_max); if (set_max) { drive->capacity = capacity = set_max; drive->cyl = set_max / (drive->head * drive->sect); drive->select.b.lba = 1; drive->id->lba_capacity = capacity; } #else /* !CONFIG_IDEDISK_STROKE */ printk(KERN_INFO "%s: setmax LBA %lu, native %lu\n", drive->name, set_max, capacity); #endif /* CONFIG_IDEDISK_STROKE */ } drive->capacity = capacity; if ((id->command_set_2 & 0x0400) && (id->cfs_enable_2 & 0x0400)) { drive->capacity48 = id->lba_capacity_2; drive->head = 255; drive->sect = 63; drive->cyl = (unsigned long)(drive->capacity48) / (drive->head * drive->sect); } check_capacity48: /* Limit disk size to 137GB if LBA48 addressing is not supported */ if (drive->addressing == 0 && drive->capacity48 > (1ULL)<<28) { printk("%s: cannot use LBA48 - capacity reset " "from %llu to %llu\n", drive->name, drive->capacity48, (1ULL)<<28); drive->capacity48 = (1ULL)<<28; } } static unsigned long idedisk_capacity (ide_drive_t *drive) { if (drive->id->cfs_enable_2 & 0x0400) return (drive->capacity48 - drive->sect0); return (drive->capacity - drive->sect0); } static ide_startstop_t idedisk_special (ide_drive_t *drive) { special_t *s = &drive->special; if (s->b.set_geometry) { s->b.set_geometry = 0; if (!IS_PDC4030_DRIVE) { ide_task_t args; memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_NSECTOR_OFFSET] = drive->sect; args.tfRegister[IDE_SECTOR_OFFSET] = drive->sect; args.tfRegister[IDE_LCYL_OFFSET] = drive->cyl; args.tfRegister[IDE_HCYL_OFFSET] = drive->cyl>>8; args.tfRegister[IDE_SELECT_OFFSET] = ((drive->head-1)|drive->select.all)&0xBF; args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SPECIFY; args.command_type = ide_cmd_type_parser(&args); do_rw_taskfile(drive, &args); } } else if (s->b.recalibrate) { s->b.recalibrate = 0; if (!IS_PDC4030_DRIVE) { ide_task_t args; memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_NSECTOR_OFFSET] = drive->sect; args.tfRegister[IDE_COMMAND_OFFSET] = WIN_RESTORE; args.command_type = ide_cmd_type_parser(&args); do_rw_taskfile(drive, &args); } } else if (s->b.set_multmode) { s->b.set_multmode = 0; if (drive->mult_req > drive->id->max_multsect) drive->mult_req = drive->id->max_multsect; if (!IS_PDC4030_DRIVE) { ide_task_t args; memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_NSECTOR_OFFSET] = drive->mult_req; args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SETMULT; args.command_type = ide_cmd_type_parser(&args); do_rw_taskfile(drive, &args); } } else if (s->all) { int special = s->all; s->all = 0; printk(KERN_ERR "%s: bad special flag: 0x%02x\n", drive->name, special); return ide_stopped; } return IS_PDC4030_DRIVE ? ide_stopped : ide_started; } static void idedisk_pre_reset (ide_drive_t *drive) { int legacy = (drive->id->cfs_enable_2 & 0x0400) ? 0 : 1; drive->special.all = 0; drive->special.b.set_geometry = legacy; drive->special.b.recalibrate = legacy; if (OK_TO_RESET_CONTROLLER) drive->mult_count = 0; if (!drive->keep_settings && !drive->using_dma) drive->mult_req = 0; if (drive->mult_req != drive->mult_count) drive->special.b.set_multmode = 1; } #ifdef CONFIG_PROC_FS static int smart_enable(ide_drive_t *drive) { ide_task_t args; memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_FEATURE_OFFSET] = SMART_ENABLE; args.tfRegister[IDE_LCYL_OFFSET] = SMART_LCYL_PASS; args.tfRegister[IDE_HCYL_OFFSET] = SMART_HCYL_PASS; args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SMART; args.command_type = ide_cmd_type_parser(&args); return ide_raw_taskfile(drive, &args, NULL); } static int get_smart_values(ide_drive_t *drive, u8 *buf) { ide_task_t args; memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_FEATURE_OFFSET] = SMART_READ_VALUES; args.tfRegister[IDE_NSECTOR_OFFSET] = 0x01; args.tfRegister[IDE_LCYL_OFFSET] = SMART_LCYL_PASS; args.tfRegister[IDE_HCYL_OFFSET] = SMART_HCYL_PASS; args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SMART; args.command_type = ide_cmd_type_parser(&args); (void) smart_enable(drive); return ide_raw_taskfile(drive, &args, buf); } static int get_smart_thresholds(ide_drive_t *drive, u8 *buf) { ide_task_t args; memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_FEATURE_OFFSET] = SMART_READ_THRESHOLDS; args.tfRegister[IDE_NSECTOR_OFFSET] = 0x01; args.tfRegister[IDE_LCYL_OFFSET] = SMART_LCYL_PASS; args.tfRegister[IDE_HCYL_OFFSET] = SMART_HCYL_PASS; args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SMART; args.command_type = ide_cmd_type_parser(&args); (void) smart_enable(drive); return ide_raw_taskfile(drive, &args, buf); } static int proc_idedisk_read_cache (char *page, char **start, off_t off, int count, int *eof, void *data) { ide_drive_t *drive = (ide_drive_t *) data; char *out = page; int len; if (drive->id_read) len = sprintf(out,"%i\n", drive->id->buf_size / 2); else len = sprintf(out,"(none)\n"); PROC_IDE_READ_RETURN(page,start,off,count,eof,len); } static int proc_idedisk_read_smart_thresholds (char *page, char **start, off_t off, int count, int *eof, void *data) { ide_drive_t *drive = (ide_drive_t *)data; int len = 0, i = 0; if (!get_smart_thresholds(drive, page)) { unsigned short *val = (unsigned short *) page; char *out = ((char *)val) + (SECTOR_WORDS * 4); page = out; do { out += sprintf(out, "%04x%c", le16_to_cpu(*val), (++i & 7) ? ' ' : '\n'); val += 1; } while (i < (SECTOR_WORDS * 2)); len = out - page; } PROC_IDE_READ_RETURN(page,start,off,count,eof,len); } static int proc_idedisk_read_smart_values (char *page, char **start, off_t off, int count, int *eof, void *data) { ide_drive_t *drive = (ide_drive_t *)data; int len = 0, i = 0; if (!get_smart_values(drive, page)) { unsigned short *val = (unsigned short *) page; char *out = ((char *)val) + (SECTOR_WORDS * 4); page = out; do { out += sprintf(out, "%04x%c", le16_to_cpu(*val), (++i & 7) ? ' ' : '\n'); val += 1; } while (i < (SECTOR_WORDS * 2)); len = out - page; } PROC_IDE_READ_RETURN(page,start,off,count,eof,len); } static ide_proc_entry_t idedisk_proc[] = { { "cache", S_IFREG|S_IRUGO, proc_idedisk_read_cache, NULL }, { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, { "smart_values", S_IFREG|S_IRUSR, proc_idedisk_read_smart_values, NULL }, { "smart_thresholds", S_IFREG|S_IRUSR, proc_idedisk_read_smart_thresholds, NULL }, { NULL, 0, NULL, NULL } }; #else #define idedisk_proc NULL #endif /* CONFIG_PROC_FS */ /* * This is tightly woven into the driver->do_special can not touch. * DON'T do it again until a total personality rewrite is committed. */ static int set_multcount(ide_drive_t *drive, int arg) { struct request rq; if (drive->special.b.set_multmode) return -EBUSY; ide_init_drive_cmd (&rq); rq.cmd = IDE_DRIVE_CMD; drive->mult_req = arg; drive->special.b.set_multmode = 1; (void) ide_do_drive_cmd (drive, &rq, ide_wait); return (drive->mult_count == arg) ? 0 : -EIO; } static int set_nowerr(ide_drive_t *drive, int arg) { if (ide_spin_wait_hwgroup(drive)) return -EBUSY; drive->nowerr = arg; drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT; spin_unlock_irq(&io_request_lock); return 0; } static int write_cache (ide_drive_t *drive, int arg) { ide_task_t args; if (!(drive->id->cfs_enable_2 & 0x3000)) return 1; memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_FEATURE_OFFSET] = (arg) ? SETFEATURES_EN_WCACHE : SETFEATURES_DIS_WCACHE; args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SETFEATURES; args.command_type = ide_cmd_type_parser(&args); (void) ide_raw_taskfile(drive, &args, NULL); drive->wcache = arg; return 0; } static int call_idedisk_standby (ide_drive_t *drive, int arg) { ide_task_t args; u8 standby = (arg) ? WIN_STANDBYNOW2 : WIN_STANDBYNOW1; memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_COMMAND_OFFSET] = standby; args.command_type = ide_cmd_type_parser(&args); return ide_raw_taskfile(drive, &args, NULL); } static int do_idedisk_standby (ide_drive_t *drive) { return call_idedisk_standby(drive, 0); } static int call_idedisk_suspend (ide_drive_t *drive, int arg) { ide_task_t args; u8 suspend = (arg) ? WIN_SLEEPNOW2 : WIN_SLEEPNOW1; memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_COMMAND_OFFSET] = suspend; args.command_type = ide_cmd_type_parser(&args); return ide_raw_taskfile(drive, &args, NULL); } static int do_idedisk_suspend (ide_drive_t *drive) { if (drive->suspend_reset) return 1; ide_cacheflush_p(drive); return call_idedisk_suspend(drive, 0); } #if 0 static int call_idedisk_checkpower (ide_drive_t *drive, int arg) { ide_task_t args; u8 ckpw = (arg) ? WIN_CHECKPOWERMODE2 : WIN_CHECKPOWERMODE1; memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_COMMAND_OFFSET] = ckpw; args.command_type = ide_cmd_type_parser(&args); ide_raw_taskfile(drive, &args, NULL); #if 0 if (errno != EIO || args[0] != 0 || args[1] != 0) state = "unknown"; else state = "sleeping"; } else { state = (args[2] == 255) ? "active/idle" : "standby"; #endif return 0; } static int do_idedisk_checkpower (ide_drive_t *drive) { return call_idedisk_checkpower(drive, 0); } #endif static int do_idedisk_resume (ide_drive_t *drive) { if (!drive->suspend_reset) return 1; return 0; } static int do_idedisk_flushcache (ide_drive_t *drive) { ide_task_t args; memset(&args, 0, sizeof(ide_task_t)); if (drive->id->cfs_enable_2 & 0x2400) args.tfRegister[IDE_COMMAND_OFFSET] = WIN_FLUSH_CACHE_EXT; else args.tfRegister[IDE_COMMAND_OFFSET] = WIN_FLUSH_CACHE; args.command_type = ide_cmd_type_parser(&args); return ide_raw_taskfile(drive, &args, NULL); } static int set_acoustic (ide_drive_t *drive, int arg) { ide_task_t args; memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_FEATURE_OFFSET] = (arg) ? SETFEATURES_EN_AAM : SETFEATURES_DIS_AAM; args.tfRegister[IDE_NSECTOR_OFFSET] = arg; args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SETFEATURES; args.command_type = ide_cmd_type_parser(&args); ide_raw_taskfile(drive, &args, NULL); drive->acoustic = arg; return 0; } static int probe_lba_addressing (ide_drive_t *drive, int arg) { drive->addressing = 0; if (HWIF(drive)->addressing) return 0; if (!(drive->id->cfs_enable_2 & 0x0400)) return -EIO; drive->addressing = arg; return 0; } static int set_lba_addressing (ide_drive_t *drive, int arg) { return (probe_lba_addressing(drive, arg)); } static void idedisk_add_settings(ide_drive_t *drive) { struct hd_driveid *id = drive->id; int major = HWIF(drive)->major; int minor = drive->select.b.unit << PARTN_BITS; ide_add_setting(drive, "bios_cyl", SETTING_RW, -1, -1, TYPE_INT, 0, 65535, 1, 1, &drive->bios_cyl, NULL); ide_add_setting(drive, "bios_head", SETTING_RW, -1, -1, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL); ide_add_setting(drive, "bios_sect", SETTING_RW, -1, -1, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL); ide_add_setting(drive, "address", SETTING_RW, HDIO_GET_ADDRESS, HDIO_SET_ADDRESS, TYPE_INTA, 0, 2, 1, 1, &drive->addressing, set_lba_addressing); ide_add_setting(drive, "bswap", SETTING_READ, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->bswap, NULL); ide_add_setting(drive, "multcount", id ? SETTING_RW : SETTING_READ, HDIO_GET_MULTCOUNT, HDIO_SET_MULTCOUNT, TYPE_BYTE, 0, id ? id->max_multsect : 0, 1, 1, &drive->mult_count, set_multcount); ide_add_setting(drive, "nowerr", SETTING_RW, HDIO_GET_NOWERR, HDIO_SET_NOWERR, TYPE_BYTE, 0, 1, 1, 1, &drive->nowerr, set_nowerr); ide_add_setting(drive, "breada_readahead", SETTING_RW, BLKRAGET, BLKRASET, TYPE_INT, 0, 255, 1, 1, &read_ahead[major], NULL); ide_add_setting(drive, "file_readahead", SETTING_RW, BLKFRAGET, BLKFRASET, TYPE_INTA, 0, 4096, PAGE_SIZE, 1024, &max_readahead[major][minor], NULL); ide_add_setting(drive, "max_kb_per_request", SETTING_RW, BLKSECTGET, BLKSECTSET, TYPE_INTA, 1, 255, 1, 1, &max_sectors[major][minor], NULL); ide_add_setting(drive, "lun", SETTING_RW, -1, -1, TYPE_INT, 0, 7, 1, 1, &drive->lun, NULL); ide_add_setting(drive, "wcache", SETTING_RW, HDIO_GET_WCACHE, HDIO_SET_WCACHE, TYPE_BYTE, 0, 1, 1, 1, &drive->wcache, write_cache); ide_add_setting(drive, "acoustic", SETTING_RW, HDIO_GET_ACOUSTIC, HDIO_SET_ACOUSTIC, TYPE_BYTE, 0, 254, 1, 1, &drive->acoustic, set_acoustic); ide_add_setting(drive, "failures", SETTING_RW, -1, -1, TYPE_INT, 0, 65535, 1, 1, &drive->failures, NULL); ide_add_setting(drive, "max_failures", SETTING_RW, -1, -1, TYPE_INT, 0, 65535, 1, 1, &drive->max_failures, NULL); } static int idedisk_ioctl (ide_drive_t *drive, struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { #if 0 HDIO_GET_ADDRESS HDIO_SET_ADDRESS HDIO_GET_WCACHE HDIO_SET_WCACHE HDIO_GET_ACOUSTIC HDIO_SET_ACOUSTIC HDIO_GET_MULTCOUNT HDIO_SET_MULTCOUNT HDIO_GET_NOWERR HDIO_SET_NOWERR #endif return -EINVAL; } static void idedisk_setup (ide_drive_t *drive) { int i; struct hd_driveid *id = drive->id; unsigned long capacity; idedisk_add_settings(drive); if (drive->id_read == 0) return; /* * CompactFlash cards and their brethern look just like hard drives * to us, but they are removable and don't have a doorlock mechanism. */ if (drive->removable && !(drive->is_flash)) { /* * Removable disks (eg. SYQUEST); ignore 'WD' drives */ if (id->model[0] != 'W' || id->model[1] != 'D') { drive->doorlocking = 1; } } for (i = 0; i < MAX_DRIVES; ++i) { ide_hwif_t *hwif = HWIF(drive); if (drive != &hwif->drives[i]) continue; hwif->gd->de_arr[i] = drive->de; if (drive->removable) hwif->gd->flags[i] |= GENHD_FL_REMOVABLE; break; } #if 1 (void) probe_lba_addressing(drive, 1); #else /* if using 48-bit addressing bump the request size up */ if (probe_lba_addressing(drive, 1)) blk_queue_max_sectors(&drive->queue, 2048); #endif /* Extract geometry if we did not already have one for the drive */ if (!drive->cyl || !drive->head || !drive->sect) { drive->cyl = drive->bios_cyl = id->cyls; drive->head = drive->bios_head = id->heads; drive->sect = drive->bios_sect = id->sectors; } /* Handle logical geometry translation by the drive */ if ((id->field_valid & 1) && id->cur_cyls && id->cur_heads && (id->cur_heads <= 16) && id->cur_sectors) { drive->cyl = id->cur_cyls; drive->head = id->cur_heads; drive->sect = id->cur_sectors; } /* Use physical geometry if what we have still makes no sense */ if (drive->head > 16 && id->heads && id->heads <= 16) { drive->cyl = id->cyls; drive->head = id->heads; drive->sect = id->sectors; } /* calculate drive capacity, and select LBA if possible */ init_idedisk_capacity (drive); /* * if possible, give fdisk access to more of the drive, * by correcting bios_cyls: */ capacity = idedisk_capacity (drive); if ((capacity >= (drive->bios_cyl * drive->bios_sect * drive->bios_head)) && (!drive->forced_geom) && drive->bios_sect && drive->bios_head) drive->bios_cyl = (capacity / drive->bios_sect) / drive->bios_head; printk (KERN_INFO "%s: %ld sectors", drive->name, capacity); /* Give size in megabytes (MB), not mebibytes (MiB). */ /* We compute the exact rounded value, avoiding overflow. */ printk (" (%ld MB)", (capacity - capacity/625 + 974)/1950); /* Only print cache size when it was specified */ if (id->buf_size) printk (" w/%dKiB Cache", id->buf_size/2); printk(", CHS=%d/%d/%d", drive->bios_cyl, drive->bios_head, drive->bios_sect); #ifdef CONFIG_BLK_DEV_IDEDMA if (drive->using_dma) (void) HWIF(drive)->ide_dma_verbose(drive); #endif /* CONFIG_BLK_DEV_IDEDMA */ printk("\n"); drive->mult_count = 0; if (id->max_multsect) { id->multsect = ((id->max_multsect/2) > 1) ? id->max_multsect : 0; id->multsect_valid = id->multsect ? 1 : 0; drive->mult_req = id->multsect_valid ? id->max_multsect : INITIAL_MULT_COUNT; drive->special.b.set_multmode = drive->mult_req ? 1 : 0; } drive->no_io_32bit = id->dword_io ? 1 : 0; if (drive->id->cfs_enable_2 & 0x3000) write_cache(drive, (id->cfs_enable_2 & 0x3000)); } static int idedisk_cleanup(ide_drive_t *drive) { ide_cacheflush_p(drive); return ide_unregister_subdriver(drive); } int idedisk_init (void); int idedisk_attach(ide_drive_t *drive); /* * IDE subdriver functions, registered with ide.c */ static ide_driver_t idedisk_driver = { name: "ide-disk", version: IDEDISK_VERSION, media: ide_disk, busy: 0, supports_dma: 1, supports_dsc_overlap: 0, cleanup: idedisk_cleanup, standby: do_idedisk_standby, suspend: do_idedisk_suspend, resume: do_idedisk_resume, flushcache: do_idedisk_flushcache, do_request: ide_do_rw_disk, end_request: idedisk_end_request, sense: idedisk_dump_status, error: idedisk_error, abort: idedisk_abort, ioctl: idedisk_ioctl, open: idedisk_open, release: idedisk_release, media_change: idedisk_media_change, revalidate: idedisk_revalidate, pre_reset: idedisk_pre_reset, capacity: idedisk_capacity, special: idedisk_special, proc: idedisk_proc, init: idedisk_init, attach: idedisk_attach, ata_prebuilder: NULL, atapi_prebuilder: NULL, }; static ide_module_t idedisk_module = { IDE_DRIVER_MODULE, idedisk_init, &idedisk_driver, NULL }; MODULE_DESCRIPTION("ATA DISK Driver"); int idedisk_attach (ide_drive_t *drive) { int ret = 0; MOD_INC_USE_COUNT; if (ide_register_subdriver(drive, &idedisk_driver, IDE_SUBDRIVER_VERSION)) { printk(KERN_ERR "ide-disk: %s: Failed to register the " "driver with ide.c\n", drive->name); ret= 1; goto bye_game_over; } DRIVER(drive)->busy++; idedisk_setup(drive); if ((!drive->head || drive->head > 16) && !drive->select.b.lba) { printk(KERN_ERR "%s: INVALID GEOMETRY: %d PHYSICAL HEADS?\n", drive->name, drive->head); (void) idedisk_cleanup(drive); ret= 1; } DRIVER(drive)->busy--; bye_game_over: MOD_DEC_USE_COUNT; return ret; } static void __exit idedisk_exit (void) { ide_drive_t *drive; int failed = 0; while ((drive = ide_scan_devices(ide_disk, idedisk_driver.name, &idedisk_driver, failed)) != NULL) { if (idedisk_cleanup (drive)) { printk(KERN_ERR "%s: cleanup_module() called while " "still busy\n", drive->name); failed++; } #ifdef CONFIG_PROC_FS /* We must remove proc entries defined in this module. * Otherwise we oops while accessing these entries */ if (drive->proc) ide_remove_proc_entries(drive->proc, idedisk_proc); #endif } ide_unregister_module(&idedisk_module); } int idedisk_init (void) { #ifdef CLASSIC_BUILTINS_METHOD ide_drive_t *drive; int failed = 0; #endif /* CLASSIC_BUILTINS_METHOD */ MOD_INC_USE_COUNT; #ifdef CLASSIC_BUILTINS_METHOD while ((drive = ide_scan_devices(ide_disk, idedisk_driver.name, NULL, failed++)) != NULL) { if (ide_register_subdriver(drive, &idedisk_driver, IDE_SUBDRIVER_VERSION)) { printk(KERN_ERR "ide-disk: %s: Failed to register " "the driver with ide.c\n", drive->name); continue; } DRIVER(drive)->busy++; idedisk_setup(drive); if ((!drive->head || drive->head > 16) && (!drive->select.b.lba)) { printk(KERN_ERR "%s: INVALID GEOMETRY: %d " "PHYSICAL HEADS?\n", drive->name, drive->head); (void) idedisk_cleanup(drive); DRIVER(drive)->busy--; continue; } DRIVER(drive)->busy--; failed--; } #endif /* CLASSIC_BUILTINS_METHOD */ ide_register_module(&idedisk_module); MOD_DEC_USE_COUNT; return 0; } ide_startstop_t panic_box(ide_drive_t *drive) { #if 0 panic("%s: Attempted to corrupt something: ide operation " #else printk(KERN_ERR "%s: Attempted to corrupt something: ide operation " #endif "was pending accross suspend/resume.\n", drive->name); return ide_stopped; } int ide_disks_busy(void) { int i; for (i=0; ihandler) && (hwgroup->handler != panic_box)) return 1; } return 0; } void ide_disk_suspend(void) { int i; while (ide_disks_busy()) { printk("*"); schedule(); } for (i=0; ihandler_save = hwgroup->handler; hwgroup->handler = panic_box; } driver_blocked = 1; if (ide_disks_busy()) panic("How did you get that request through?!"); } /* unsuspend and resume should be equal in the ideal world */ void ide_disk_unsuspend(void) { int i; for (i=0; ihandler = NULL; /* hwgroup->handler_save; */ hwgroup->handler_save = NULL; } driver_blocked = 0; } void ide_disk_resume(void) { int i; for (i=0; ihandler != panic_box) panic("Handler was not set to panic?"); hwgroup->handler_save = NULL; hwgroup->handler = NULL; } driver_blocked = 0; } module_init(idedisk_init); module_exit(idedisk_exit); MODULE_LICENSE("GPL");