ide-disk.c
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上传日期:2013-04-10
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- /*
- * linux/drivers/ide/ide-disk.c Version 1.10 June 9, 2000
- *
- * Copyright (C) 1994-1998 Linus Torvalds & authors (see below)
- */
- /*
- * Mostly written by Mark Lord <mlord@pobox.com>
- * and Gadi Oxman <gadio@netvision.net.il>
- * and Andre Hedrick <andre@linux-ide.org>
- *
- * 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
- * Highmem I/O support, Jens Axboe <axboe@suse.de>
- */
- #define IDEDISK_VERSION "1.12"
- #undef REALLY_SLOW_IO /* most systems can safely undef this */
- #include <linux/config.h>
- #include <linux/module.h>
- #include <linux/types.h>
- #include <linux/string.h>
- #include <linux/kernel.h>
- #include <linux/timer.h>
- #include <linux/mm.h>
- #include <linux/interrupt.h>
- #include <linux/major.h>
- #include <linux/errno.h>
- #include <linux/genhd.h>
- #include <linux/slab.h>
- #include <linux/delay.h>
- #include <linux/ide.h>
- #include <asm/byteorder.h>
- #include <asm/irq.h>
- #include <asm/uaccess.h>
- #include <asm/io.h>
- #ifdef CONFIG_BLK_DEV_PDC4030
- #define IS_PDC4030_DRIVE (HWIF(drive)->chipset == ide_pdc4030)
- #else
- #define IS_PDC4030_DRIVE (0) /* auto-NULLs out pdc4030 code */
- #endif
- #ifdef CONFIG_IDE_TASKFILE_IO
- # undef __TASKFILE__IO /* define __TASKFILE__IO */
- #else /* CONFIG_IDE_TASKFILE_IO */
- # undef __TASKFILE__IO
- #endif /* CONFIG_IDE_TASKFILE_IO */
- #ifndef __TASKFILE__IO
- static void idedisk_bswap_data (void *buffer, int wcount)
- {
- u16 *p = buffer;
- while (wcount--) {
- *p = *p << 8 | *p >> 8; p++;
- *p = *p << 8 | *p >> 8; p++;
- }
- }
- static inline void idedisk_input_data (ide_drive_t *drive, void *buffer, unsigned int wcount)
- {
- ide_input_data(drive, buffer, wcount);
- if (drive->bswap)
- idedisk_bswap_data(buffer, wcount);
- }
- static inline void idedisk_output_data (ide_drive_t *drive, void *buffer, unsigned int wcount)
- {
- if (drive->bswap) {
- idedisk_bswap_data(buffer, wcount);
- ide_output_data(drive, buffer, wcount);
- idedisk_bswap_data(buffer, wcount);
- } else
- ide_output_data(drive, buffer, wcount);
- }
- #endif /* __TASKFILE__IO */
- /*
- * 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 __TASKFILE__IO
- /*
- * read_intr() is the handler for disk read/multread interrupts
- */
- static ide_startstop_t read_intr (ide_drive_t *drive)
- {
- byte stat;
- int i;
- unsigned int msect, nsect;
- unsigned long flags;
- struct request *rq;
- char *to;
- /* new way for dealing with premature shared PCI interrupts */
- if (!OK_STAT(stat=GET_STAT(),DATA_READY,BAD_R_STAT)) {
- if (stat & (ERR_STAT|DRQ_STAT)) {
- return ide_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;
- }
- msect = drive->mult_count;
- 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);
- idedisk_input_data(drive, to, nsect * SECTOR_WORDS);
- #ifdef DEBUG
- printk("%s: read: sectors(%ld-%ld), buffer=0x%08lx, remaining=%ldn",
- 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)
- ide_end_request(1, HWGROUP(drive));
- 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)
- {
- byte stat;
- int i;
- ide_hwgroup_t *hwgroup = HWGROUP(drive);
- struct request *rq = hwgroup->rq;
- if (!OK_STAT(stat=GET_STAT(),DRIVE_READY,drive->bad_wstat)) {
- printk("%s: write_intr error1: nr_sectors=%ld, stat=0x%02xn", drive->name, rq->nr_sectors, stat);
- } else {
- #ifdef DEBUG
- printk("%s: write: sector %ld, buffer=0x%08lx, remaining=%ldn",
- 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)
- ide_end_request(1, hwgroup);
- if (i > 0) {
- unsigned long flags;
- char *to = ide_map_buffer(rq, &flags);
- idedisk_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;
- }
- return ide_stopped; /* the original code did this here (?) */
- }
- return ide_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!
- */
- 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;
- }
- }
- /*
- * Ok, we're all setup for the interrupt
- * re-entering us on the last transfer.
- */
- idedisk_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)
- {
- byte stat;
- int i;
- ide_hwgroup_t *hwgroup = HWGROUP(drive);
- struct request *rq = &hwgroup->wrq;
- if (OK_STAT(stat=GET_STAT(),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;
- ide_end_request(1, hwgroup);
- }
- return ide_stopped;
- }
- }
- return ide_stopped; /* the original code did this here (?) */
- }
- return ide_error(drive, "multwrite_intr", stat);
- }
- #endif /* __TASKFILE__IO */
- #ifdef __TASKFILE__IO
- static ide_startstop_t chs_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long block);
- static ide_startstop_t lba_28_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long block);
- static ide_startstop_t lba_48_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long long block);
- /*
- * 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.
- */
- static ide_startstop_t do_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long block)
- {
- if (rq->cmd == READ)
- goto good_command;
- if (rq->cmd == WRITE)
- goto good_command;
- printk(KERN_ERR "%s: bad command: %dn", drive->name, rq->cmd);
- ide_end_request(0, HWGROUP(drive));
- return ide_stopped;
- good_command:
- #ifdef CONFIG_BLK_DEV_PDC4030
- if (IS_PDC4030_DRIVE) {
- extern ide_startstop_t promise_rw_disk(ide_drive_t *, struct request *, unsigned long);
- return promise_rw_disk(drive, rq, block);
- }
- #endif /* CONFIG_BLK_DEV_PDC4030 */
- if ((drive->id->cfs_enable_2 & 0x0400) && (drive->addressing)) /* 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;
- #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)
- {
- struct hd_drive_task_hdr taskfile;
- struct hd_drive_hob_hdr hobfile;
- ide_task_t args;
- task_ioreg_t command = get_command(drive, rq->cmd);
- 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);
- memset(&taskfile, 0, sizeof(task_struct_t));
- memset(&hobfile, 0, sizeof(hob_struct_t));
- taskfile.sector_count = (rq->nr_sectors==256)?0x00:rq->nr_sectors;
- taskfile.sector_number = sect;
- taskfile.low_cylinder = cyl;
- taskfile.high_cylinder = (cyl>>8);
- taskfile.device_head = head;
- taskfile.device_head |= drive->select.all;
- taskfile.command = command;
- #ifdef DEBUG
- printk("%s: %sing: ", drive->name, (rq->cmd==READ) ? "read" : "writ");
- if (lba) printk("LBAsect=%lld, ", block);
- else printk("CHS=%d/%d/%d, ", cyl, head, sect);
- printk("sectors=%ld, ", rq->nr_sectors);
- printk("buffer=0x%08lxn", (unsigned long) rq->buffer);
- #endif
- memcpy(args.tfRegister, &taskfile, sizeof(struct hd_drive_task_hdr));
- memcpy(args.hobRegister, &hobfile, sizeof(struct hd_drive_hob_hdr));
- args.command_type = ide_cmd_type_parser(&args);
- args.prehandler = ide_pre_handler_parser(&taskfile, &hobfile);
- args.handler = ide_handler_parser(&taskfile, &hobfile);
- args.posthandler = NULL;
- args.rq = (struct request *) rq;
- args.block = block;
- rq->special = NULL;
- 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)
- {
- struct hd_drive_task_hdr taskfile;
- struct hd_drive_hob_hdr hobfile;
- ide_task_t args;
- task_ioreg_t command = get_command(drive, rq->cmd);
- memset(&taskfile, 0, sizeof(task_struct_t));
- memset(&hobfile, 0, sizeof(hob_struct_t));
- taskfile.sector_count = (rq->nr_sectors==256)?0x00:rq->nr_sectors;
- taskfile.sector_number = block;
- taskfile.low_cylinder = (block>>=8);
- taskfile.high_cylinder = (block>>=8);
- taskfile.device_head = ((block>>8)&0x0f);
- taskfile.device_head |= drive->select.all;
- taskfile.command = command;
- #ifdef DEBUG
- printk("%s: %sing: ", drive->name, (rq->cmd==READ) ? "read" : "writ");
- if (lba) printk("LBAsect=%lld, ", block);
- else printk("CHS=%d/%d/%d, ", cyl, head, sect);
- printk("sectors=%ld, ", rq->nr_sectors);
- printk("buffer=0x%08lxn", (unsigned long) rq->buffer);
- #endif
- memcpy(args.tfRegister, &taskfile, sizeof(struct hd_drive_task_hdr));
- memcpy(args.hobRegister, &hobfile, sizeof(struct hd_drive_hob_hdr));
- args.command_type = ide_cmd_type_parser(&args);
- args.prehandler = ide_pre_handler_parser(&taskfile, &hobfile);
- args.handler = ide_handler_parser(&taskfile, &hobfile);
- args.posthandler = NULL;
- args.rq = (struct request *) rq;
- args.block = block;
- rq->special = NULL;
- 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)
- {
- struct hd_drive_task_hdr taskfile;
- struct hd_drive_hob_hdr hobfile;
- ide_task_t args;
- task_ioreg_t command = get_command(drive, rq->cmd);
- memset(&taskfile, 0, sizeof(task_struct_t));
- memset(&hobfile, 0, sizeof(hob_struct_t));
- taskfile.sector_count = rq->nr_sectors;
- hobfile.sector_count = (rq->nr_sectors>>8);
- if (rq->nr_sectors == 65536) {
- taskfile.sector_count = 0x00;
- hobfile.sector_count = 0x00;
- }
- taskfile.sector_number = block; /* low lba */
- taskfile.low_cylinder = (block>>=8); /* mid lba */
- taskfile.high_cylinder = (block>>=8); /* hi lba */
- hobfile.sector_number = (block>>=8); /* low lba */
- hobfile.low_cylinder = (block>>=8); /* mid lba */
- hobfile.high_cylinder = (block>>=8); /* hi lba */
- taskfile.device_head = drive->select.all;
- hobfile.device_head = taskfile.device_head;
- hobfile.control = (drive->ctl|0x80);
- taskfile.command = command;
- #ifdef DEBUG
- printk("%s: %sing: ", drive->name, (rq->cmd==READ) ? "read" : "writ");
- if (lba) printk("LBAsect=%lld, ", block);
- else printk("CHS=%d/%d/%d, ", cyl, head, sect);
- printk("sectors=%ld, ", rq->nr_sectors);
- printk("buffer=0x%08lxn", (unsigned long) rq->buffer);
- #endif
- memcpy(args.tfRegister, &taskfile, sizeof(struct hd_drive_task_hdr));
- memcpy(args.hobRegister, &hobfile, sizeof(struct hd_drive_hob_hdr));
- args.command_type = ide_cmd_type_parser(&args);
- args.prehandler = ide_pre_handler_parser(&taskfile, &hobfile);
- args.handler = ide_handler_parser(&taskfile, &hobfile);
- args.posthandler = NULL;
- args.rq = (struct request *) rq;
- args.block = block;
- rq->special = NULL;
- rq->special = (ide_task_t *)&args;
- return do_rw_taskfile(drive, &args);
- }
- #else /* !__TASKFILE__IO */
- /*
- * 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.
- */
- static ide_startstop_t do_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long block)
- {
- if (IDE_CONTROL_REG)
- OUT_BYTE(drive->ctl,IDE_CONTROL_REG);
- #ifdef CONFIG_BLK_DEV_PDC4030
- if (drive->select.b.lba || IS_PDC4030_DRIVE) {
- #else /* !CONFIG_BLK_DEV_PDC4030 */
- if (drive->select.b.lba) {
- #endif /* CONFIG_BLK_DEV_PDC4030 */
- if ((drive->id->cfs_enable_2 & 0x0400) && (drive->addressing)) {
- task_ioreg_t tasklets[10];
- tasklets[0] = 0;
- tasklets[1] = 0;
- tasklets[2] = rq->nr_sectors;
- tasklets[3] = (rq->nr_sectors>>8);
- if (rq->nr_sectors == 65536) {
- tasklets[2] = 0x00;
- tasklets[3] = 0x00;
- }
- 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%012lxn",
- 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%02xn",
- drive->name, tasklets[3], tasklets[2],
- tasklets[9], tasklets[8], tasklets[7],
- tasklets[6], tasklets[5], tasklets[4]);
- #endif
- OUT_BYTE(tasklets[1], IDE_FEATURE_REG);
- OUT_BYTE(tasklets[3], IDE_NSECTOR_REG);
- OUT_BYTE(tasklets[7], IDE_SECTOR_REG);
- OUT_BYTE(tasklets[8], IDE_LCYL_REG);
- OUT_BYTE(tasklets[9], IDE_HCYL_REG);
- OUT_BYTE(tasklets[0], IDE_FEATURE_REG);
- OUT_BYTE(tasklets[2], IDE_NSECTOR_REG);
- OUT_BYTE(tasklets[4], IDE_SECTOR_REG);
- OUT_BYTE(tasklets[5], IDE_LCYL_REG);
- OUT_BYTE(tasklets[6], IDE_HCYL_REG);
- OUT_BYTE(0x00|drive->select.all,IDE_SELECT_REG);
- } else {
- #ifdef DEBUG
- printk("%s: %sing: LBAsect=%ld, sectors=%ld, buffer=0x%08lxn",
- drive->name, (rq->cmd==READ)?"read":"writ",
- block, rq->nr_sectors, (unsigned long) rq->buffer);
- #endif
- OUT_BYTE(0x00, IDE_FEATURE_REG);
- OUT_BYTE((rq->nr_sectors==256)?0x00:rq->nr_sectors,IDE_NSECTOR_REG);
- OUT_BYTE(block,IDE_SECTOR_REG);
- OUT_BYTE(block>>=8,IDE_LCYL_REG);
- OUT_BYTE(block>>=8,IDE_HCYL_REG);
- OUT_BYTE(((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;
- OUT_BYTE(sect,IDE_SECTOR_REG);
- head = track % drive->head;
- cyl = track / drive->head;
- OUT_BYTE(0x00, IDE_FEATURE_REG);
- OUT_BYTE((rq->nr_sectors==256)?0x00:rq->nr_sectors,IDE_NSECTOR_REG);
- OUT_BYTE(cyl,IDE_LCYL_REG);
- OUT_BYTE(cyl>>8,IDE_HCYL_REG);
- OUT_BYTE(head|drive->select.all,IDE_SELECT_REG);
- #ifdef DEBUG
- printk("%s: %sing: CHS=%d/%d/%d, sectors=%ld, buffer=0x%08lxn",
- drive->name, (rq->cmd==READ)?"read":"writ", cyl,
- head, sect, rq->nr_sectors, (unsigned long) rq->buffer);
- #endif
- }
- #ifdef CONFIG_BLK_DEV_PDC4030
- if (IS_PDC4030_DRIVE) {
- extern ide_startstop_t do_pdc4030_io(ide_drive_t *, struct request *);
- return do_pdc4030_io (drive, rq);
- }
- #endif /* CONFIG_BLK_DEV_PDC4030 */
- if (rq->cmd == READ) {
- #ifdef CONFIG_BLK_DEV_IDEDMA
- if (drive->using_dma && !(HWIF(drive)->dmaproc(ide_dma_read, drive)))
- return ide_started;
- #endif /* CONFIG_BLK_DEV_IDEDMA */
- ide_set_handler(drive, &read_intr, WAIT_CMD, NULL);
- if ((drive->id->cfs_enable_2 & 0x0400) && (drive->addressing)) {
- OUT_BYTE(drive->mult_count ? WIN_MULTREAD_EXT : WIN_READ_EXT, IDE_COMMAND_REG);
- } else {
- OUT_BYTE(drive->mult_count ? WIN_MULTREAD : WIN_READ, IDE_COMMAND_REG);
- }
- return ide_started;
- }
- if (rq->cmd == WRITE) {
- ide_startstop_t startstop;
- #ifdef CONFIG_BLK_DEV_IDEDMA
- if (drive->using_dma && !(HWIF(drive)->dmaproc(ide_dma_write, drive)))
- return ide_started;
- #endif /* CONFIG_BLK_DEV_IDEDMA */
- if ((drive->id->cfs_enable_2 & 0x0400) && (drive->addressing)) {
- OUT_BYTE(drive->mult_count ? WIN_MULTWRITE_EXT : WIN_WRITE_EXT, IDE_COMMAND_REG);
- } else {
- OUT_BYTE(drive->mult_count ? WIN_MULTWRITE : WIN_WRITE, IDE_COMMAND_REG);
- }
- if (ide_wait_stat(&startstop, drive, DATA_READY, drive->bad_wstat, WAIT_DRQ)) {
- printk(KERN_ERR "%s: no DRQ after issuing %sn", drive->name,
- drive->mult_count ? "MULTWRITE" : "WRITE");
- return startstop;
- }
- if (!drive->unmask)
- __cli(); /* local CPU only */
- 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...
- */
- 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 *buffer = ide_map_buffer(rq, &flags);
- ide_set_handler (drive, &write_intr, WAIT_CMD, NULL);
- idedisk_output_data(drive, buffer, SECTOR_WORDS);
- ide_unmap_buffer(buffer, &flags);
- }
- return ide_started;
- }
- printk(KERN_ERR "%s: bad command: %dn", drive->name, rq->cmd);
- ide_end_request(0, HWGROUP(drive));
- return ide_stopped;
- }
- #endif /* __TASKFILE__IO */
- static int idedisk_open (struct inode *inode, struct file *filp, ide_drive_t *drive)
- {
- MOD_INC_USE_COUNT;
- if (drive->removable && drive->usage == 1) {
- struct hd_drive_task_hdr taskfile;
- struct hd_drive_hob_hdr hobfile;
- memset(&taskfile, 0, sizeof(struct hd_drive_task_hdr));
- memset(&hobfile, 0, sizeof(struct hd_drive_hob_hdr));
- taskfile.command = WIN_DOORLOCK;
- 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_wait_taskfile(drive, &taskfile, &hobfile, NULL))
- drive->doorlocking = 0;
- }
- return 0;
- }
- static int do_idedisk_flushcache(ide_drive_t *drive);
- static void idedisk_release (struct inode *inode, struct file *filp, ide_drive_t *drive)
- {
- if (drive->removable && !drive->usage) {
- struct hd_drive_task_hdr taskfile;
- struct hd_drive_hob_hdr hobfile;
- memset(&taskfile, 0, sizeof(struct hd_drive_task_hdr));
- memset(&hobfile, 0, sizeof(struct hd_drive_hob_hdr));
- taskfile.command = WIN_DOORUNLOCK;
- invalidate_bdev(inode->i_bdev, 0);
- if (drive->doorlocking && ide_wait_taskfile(drive, &taskfile, &hobfile, NULL))
- drive->doorlocking = 0;
- }
- if ((drive->id->cfs_enable_2 & 0x3000) && drive->wcache)
- if (do_idedisk_flushcache(drive))
- printk (KERN_INFO "%s: Write Cache FAILED Flushing!n",
- drive->name);
- MOD_DEC_USE_COUNT;
- }
- static int idedisk_media_change (ide_drive_t *drive)
- {
- return drive->removable; /* if removable, always assume it was changed */
- }
- static void idedisk_revalidate (ide_drive_t *drive)
- {
- grok_partitions(HWIF(drive)->gd, drive->select.b.unit,
- 1<<PARTN_BITS,
- current_capacity(drive));
- }
- /*
- * 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;
- if (!(drive->id->command_set_1 & 0x0400) &&
- !(drive->id->cfs_enable_2 & 0x0100))
- return addr;
- /* 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.handler = task_no_data_intr;
- /* 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.handler = task_no_data_intr;
- /* 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.handler = task_no_data_intr;
- /* 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.handler = task_no_data_intr;
- /* 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;
- }
- /*
- * 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;
- printk("%s: host protected area => %dn", drive->name, flag);
- return flag;
- }
- #endif /* CONFIG_IDEDISK_STROKE */
- /*
- * 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).
- */
- static void init_idedisk_capacity (ide_drive_t *drive)
- {
- struct hd_driveid *id = drive->id;
- unsigned long capacity = drive->cyl * drive->head * drive->sect;
- unsigned long set_max = idedisk_read_native_max_address(drive);
- 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;
- drive->head = drive->bios_head = 255;
- drive->sect = drive->bios_sect = 63;
- 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) {
- #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("%s: setmax_ext LBA %llu, native %llun",
- drive->name, set_max_ext, capacity_2);
- #endif /* CONFIG_IDEDISK_STROKE */
- }
- drive->bios_cyl = drive->cyl;
- drive->capacity48 = capacity_2;
- drive->capacity = (unsigned long) capacity_2;
- return;
- /* 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) {
- #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("%s: setmax LBA %lu, native %lun",
- 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);
- }
- }
- 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) {
- struct hd_drive_task_hdr taskfile;
- struct hd_drive_hob_hdr hobfile;
- ide_handler_t *handler = NULL;
- memset(&taskfile, 0, sizeof(struct hd_drive_task_hdr));
- memset(&hobfile, 0, sizeof(struct hd_drive_hob_hdr));
- s->b.set_geometry = 0;
- taskfile.sector_number = drive->sect;
- taskfile.low_cylinder = drive->cyl;
- taskfile.high_cylinder = drive->cyl>>8;
- taskfile.device_head = ((drive->head-1)|drive->select.all)&0xBF;
- if (!IS_PDC4030_DRIVE) {
- taskfile.sector_count = drive->sect;
- taskfile.command = WIN_SPECIFY;
- handler = ide_handler_parser(&taskfile, &hobfile);
- }
- do_taskfile(drive, &taskfile, &hobfile, handler);
- } else if (s->b.recalibrate) {
- s->b.recalibrate = 0;
- if (!IS_PDC4030_DRIVE) {
- struct hd_drive_task_hdr taskfile;
- struct hd_drive_hob_hdr hobfile;
- memset(&taskfile, 0, sizeof(struct hd_drive_task_hdr));
- memset(&hobfile, 0, sizeof(struct hd_drive_hob_hdr));
- taskfile.sector_count = drive->sect;
- taskfile.command = WIN_RESTORE;
- do_taskfile(drive, &taskfile, &hobfile, ide_handler_parser(&taskfile, &hobfile));
- }
- } else if (s->b.set_multmode) {
- s->b.set_multmode = 0;
- if (drive->id && drive->mult_req > drive->id->max_multsect)
- drive->mult_req = drive->id->max_multsect;
- if (!IS_PDC4030_DRIVE) {
- struct hd_drive_task_hdr taskfile;
- struct hd_drive_hob_hdr hobfile;
- memset(&taskfile, 0, sizeof(struct hd_drive_task_hdr));
- memset(&hobfile, 0, sizeof(struct hd_drive_hob_hdr));
- taskfile.sector_count = drive->mult_req;
- taskfile.command = WIN_SETMULT;
- do_taskfile(drive, &taskfile, &hobfile, ide_handler_parser(&taskfile, &hobfile));
- }
- } else if (s->all) {
- int special = s->all;
- s->all = 0;
- printk(KERN_ERR "%s: bad special flag: 0x%02xn", 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)
- {
- struct hd_drive_task_hdr taskfile;
- struct hd_drive_hob_hdr hobfile;
- memset(&taskfile, 0, sizeof(struct hd_drive_task_hdr));
- memset(&hobfile, 0, sizeof(struct hd_drive_hob_hdr));
- taskfile.feature = SMART_ENABLE;
- taskfile.low_cylinder = SMART_LCYL_PASS;
- taskfile.high_cylinder = SMART_HCYL_PASS;
- taskfile.command = WIN_SMART;
- return ide_wait_taskfile(drive, &taskfile, &hobfile, NULL);
- }
- static int get_smart_values(ide_drive_t *drive, byte *buf)
- {
- struct hd_drive_task_hdr taskfile;
- struct hd_drive_hob_hdr hobfile;
- memset(&taskfile, 0, sizeof(struct hd_drive_task_hdr));
- memset(&hobfile, 0, sizeof(struct hd_drive_hob_hdr));
- taskfile.feature = SMART_READ_VALUES;
- taskfile.sector_count = 0x01;
- taskfile.low_cylinder = SMART_LCYL_PASS;
- taskfile.high_cylinder = SMART_HCYL_PASS;
- taskfile.command = WIN_SMART;
- (void) smart_enable(drive);
- return ide_wait_taskfile(drive, &taskfile, &hobfile, buf);
- }
- static int get_smart_thresholds(ide_drive_t *drive, byte *buf)
- {
- struct hd_drive_task_hdr taskfile;
- struct hd_drive_hob_hdr hobfile;
- memset(&taskfile, 0, sizeof(struct hd_drive_task_hdr));
- memset(&hobfile, 0, sizeof(struct hd_drive_hob_hdr));
- taskfile.feature = SMART_READ_THRESHOLDS;
- taskfile.sector_count = 0x01;
- taskfile.low_cylinder = SMART_LCYL_PASS;
- taskfile.high_cylinder = SMART_HCYL_PASS;
- taskfile.command = WIN_SMART;
- (void) smart_enable(drive);
- return ide_wait_taskfile(drive, &taskfile, &hobfile, 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)
- len = sprintf(out,"%in", 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 */
- static int set_multcount(ide_drive_t *drive, int arg)
- {
- #ifdef __TASKFILE__IO
- struct hd_drive_task_hdr taskfile;
- struct hd_drive_hob_hdr hobfile;
- if (drive->special.b.set_multmode)
- return -EBUSY;
- memset(&taskfile, 0, sizeof(struct hd_drive_task_hdr));
- memset(&hobfile, 0, sizeof(struct hd_drive_hob_hdr));
- taskfile.sector_count = drive->mult_req;
- taskfile.command = WIN_SETMULT;
- drive->mult_req = arg;
- drive->special.b.set_multmode = 1;
- ide_wait_taskfile(drive, &taskfile, &hobfile, NULL);
- #else /* !__TASKFILE__IO */
- 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);
- #endif /* __TASKFILE__IO */
- 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)
- {
- struct hd_drive_task_hdr taskfile;
- struct hd_drive_hob_hdr hobfile;
- memset(&taskfile, 0, sizeof(struct hd_drive_task_hdr));
- memset(&hobfile, 0, sizeof(struct hd_drive_hob_hdr));
- taskfile.feature = (arg) ? SETFEATURES_EN_WCACHE : SETFEATURES_DIS_WCACHE;
- taskfile.command = WIN_SETFEATURES;
- if (!(drive->id->cfs_enable_2 & 0x3000))
- return 1;
- (void) ide_wait_taskfile(drive, &taskfile, &hobfile, NULL);
- drive->wcache = arg;
- return 0;
- }
- static int do_idedisk_standby (ide_drive_t *drive)
- {
- struct hd_drive_task_hdr taskfile;
- struct hd_drive_hob_hdr hobfile;
- memset(&taskfile, 0, sizeof(struct hd_drive_task_hdr));
- memset(&hobfile, 0, sizeof(struct hd_drive_hob_hdr));
- taskfile.command = WIN_STANDBYNOW1;
- return ide_wait_taskfile(drive, &taskfile, &hobfile, NULL);
- }
- static int do_idedisk_flushcache (ide_drive_t *drive)
- {
- struct hd_drive_task_hdr taskfile;
- struct hd_drive_hob_hdr hobfile;
- memset(&taskfile, 0, sizeof(struct hd_drive_task_hdr));
- memset(&hobfile, 0, sizeof(struct hd_drive_hob_hdr));
- if (drive->id->cfs_enable_2 & 0x2400) {
- taskfile.command = WIN_FLUSH_CACHE_EXT;
- } else {
- taskfile.command = WIN_FLUSH_CACHE;
- }
- return ide_wait_taskfile(drive, &taskfile, &hobfile, NULL);
- }
- static int set_acoustic (ide_drive_t *drive, int arg)
- {
- struct hd_drive_task_hdr taskfile;
- struct hd_drive_hob_hdr hobfile;
- memset(&taskfile, 0, sizeof(struct hd_drive_task_hdr));
- memset(&hobfile, 0, sizeof(struct hd_drive_hob_hdr));
- taskfile.feature = (arg)?SETFEATURES_EN_AAM:SETFEATURES_DIS_AAM;
- taskfile.sector_count = arg;
- taskfile.command = WIN_SETFEATURES;
- (void) ide_wait_taskfile(drive, &taskfile, &hobfile, NULL);
- drive->acoustic = arg;
- return 0;
- }
- static int probe_lba_addressing (ide_drive_t *drive, int arg)
- {
- drive->addressing = 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 void idedisk_setup (ide_drive_t *drive)
- {
- int i;
-
- struct hd_driveid *id = drive->id;
- unsigned long capacity;
-
- idedisk_add_settings(drive);
- if (id == NULL)
- 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_flashcard(drive)) {
- /*
- * 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;
- }
- /* 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)->dmaproc(ide_dma_verbose, drive);
- #endif /* CONFIG_BLK_DEV_IDEDMA */
- printk("n");
- drive->mult_count = 0;
- if (id->max_multsect) {
- #ifdef CONFIG_IDEDISK_MULTI_MODE
- 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;
- #else /* original, pre IDE-NFG, per request of AC */
- drive->mult_req = INITIAL_MULT_COUNT;
- if (drive->mult_req > id->max_multsect)
- drive->mult_req = id->max_multsect;
- if (drive->mult_req || ((id->multsect_valid & 1) && id->multsect))
- drive->special.b.set_multmode = 1;
- #endif /* CONFIG_IDEDISK_MULTI_MODE */
- }
- drive->no_io_32bit = id->dword_io ? 1 : 0;
- if (drive->id->cfs_enable_2 & 0x3000)
- write_cache(drive, (id->cfs_enable_2 & 0x3000));
- (void) probe_lba_addressing(drive, 1);
- }
- static int idedisk_cleanup (ide_drive_t *drive)
- {
- if ((drive->id->cfs_enable_2 & 0x3000) && drive->wcache)
- if (do_idedisk_flushcache(drive))
- printk (KERN_INFO "%s: Write Cache FAILED Flushing!n",
- drive->name);
- return ide_unregister_subdriver(drive);
- }
- int idedisk_reinit(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,
- flushcache: do_idedisk_flushcache,
- do_request: do_rw_disk,
- end_request: NULL,
- ioctl: NULL,
- 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,
- reinit: idedisk_reinit,
- ata_prebuilder: NULL,
- atapi_prebuilder: NULL,
- };
- int idedisk_init (void);
- static ide_module_t idedisk_module = {
- IDE_DRIVER_MODULE,
- idedisk_init,
- &idedisk_driver,
- NULL
- };
- MODULE_DESCRIPTION("ATA DISK Driver");
- int idedisk_reinit (ide_drive_t *drive)
- {
- int failed = 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.cn", drive->name);
- return 1;
- }
- 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--;
- return 1;
- }
- DRIVER(drive)->busy--;
- failed--;
- ide_register_module(&idedisk_module);
- MOD_DEC_USE_COUNT;
- return 0;
- }
- 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 busyn", drive->name);
- failed++;
- }
- /* We must remove proc entries defined in this module.
- Otherwise we oops while accessing these entries */
- #ifdef CONFIG_PROC_FS
- if (drive->proc)
- ide_remove_proc_entries(drive->proc, idedisk_proc);
- #endif
- }
- ide_unregister_module(&idedisk_module);
- }
- int idedisk_init (void)
- {
- ide_drive_t *drive;
- int failed = 0;
-
- MOD_INC_USE_COUNT;
- 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.cn", 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--;
- }
- ide_register_module(&idedisk_module);
- MOD_DEC_USE_COUNT;
- return 0;
- }
- module_init(idedisk_init);
- module_exit(idedisk_exit);
- MODULE_LICENSE("GPL");