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![Maxime Bizon](/assets/img/avatar_default.png)
I'm using ide on 2.6.30.1 with xfs filesystem. I noticed a kernel memory leak after writing lots of data, the kmalloc-96 slab cache keeps growing. It seems the struct ide_cmd kmalloced by idedisk_prepare_flush is never kfreed. Commita09485df9c
("ide: move request type specific code from ide_end_drive_cmd() to callers (v3)") andf505d49ffd
("ide: fix barriers support") cause this regression, cmd->rq must now be set for ide_complete_cmd to honor the IDE_TFLAG_DYN flag. Signed-off-by: Maxime Bizon <mbizon@freebox.fr> Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
795 lines
19 KiB
C
795 lines
19 KiB
C
/*
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* Copyright (C) 1994-1998 Linus Torvalds & authors (see below)
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* Copyright (C) 1998-2002 Linux ATA Development
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* Andre Hedrick <andre@linux-ide.org>
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* Copyright (C) 2003 Red Hat
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* Copyright (C) 2003-2005, 2007 Bartlomiej Zolnierkiewicz
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*/
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/*
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* Mostly written by Mark Lord <mlord@pobox.com>
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* and Gadi Oxman <gadio@netvision.net.il>
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* and Andre Hedrick <andre@linux-ide.org>
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*
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* This is the IDE/ATA disk driver, as evolved from hd.c and ide.c.
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*/
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#include <linux/types.h>
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#include <linux/string.h>
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#include <linux/kernel.h>
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#include <linux/timer.h>
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#include <linux/mm.h>
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#include <linux/interrupt.h>
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#include <linux/major.h>
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#include <linux/errno.h>
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#include <linux/genhd.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/mutex.h>
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#include <linux/leds.h>
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#include <linux/ide.h>
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#include <asm/byteorder.h>
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#include <asm/irq.h>
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#include <asm/uaccess.h>
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#include <asm/io.h>
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#include <asm/div64.h>
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#include "ide-disk.h"
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static const u8 ide_rw_cmds[] = {
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ATA_CMD_READ_MULTI,
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ATA_CMD_WRITE_MULTI,
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ATA_CMD_READ_MULTI_EXT,
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ATA_CMD_WRITE_MULTI_EXT,
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ATA_CMD_PIO_READ,
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ATA_CMD_PIO_WRITE,
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ATA_CMD_PIO_READ_EXT,
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ATA_CMD_PIO_WRITE_EXT,
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ATA_CMD_READ,
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ATA_CMD_WRITE,
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ATA_CMD_READ_EXT,
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ATA_CMD_WRITE_EXT,
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};
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static void ide_tf_set_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 dma)
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{
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u8 index, lba48, write;
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lba48 = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 2 : 0;
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write = (cmd->tf_flags & IDE_TFLAG_WRITE) ? 1 : 0;
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if (dma) {
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cmd->protocol = ATA_PROT_DMA;
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index = 8;
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} else {
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cmd->protocol = ATA_PROT_PIO;
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if (drive->mult_count) {
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cmd->tf_flags |= IDE_TFLAG_MULTI_PIO;
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index = 0;
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} else
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index = 4;
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}
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cmd->tf.command = ide_rw_cmds[index + lba48 + write];
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}
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/*
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* __ide_do_rw_disk() issues READ and WRITE commands to a disk,
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* using LBA if supported, or CHS otherwise, to address sectors.
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*/
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static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
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sector_t block)
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{
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ide_hwif_t *hwif = drive->hwif;
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u16 nsectors = (u16)blk_rq_sectors(rq);
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u8 lba48 = !!(drive->dev_flags & IDE_DFLAG_LBA48);
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u8 dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
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struct ide_cmd cmd;
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struct ide_taskfile *tf = &cmd.tf;
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ide_startstop_t rc;
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if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && lba48 && dma) {
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if (block + blk_rq_sectors(rq) > 1ULL << 28)
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dma = 0;
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else
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lba48 = 0;
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}
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memset(&cmd, 0, sizeof(cmd));
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cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
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cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
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if (drive->dev_flags & IDE_DFLAG_LBA) {
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if (lba48) {
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pr_debug("%s: LBA=0x%012llx\n", drive->name,
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(unsigned long long)block);
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tf->nsect = nsectors & 0xff;
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tf->lbal = (u8) block;
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tf->lbam = (u8)(block >> 8);
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tf->lbah = (u8)(block >> 16);
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tf->device = ATA_LBA;
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tf = &cmd.hob;
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tf->nsect = (nsectors >> 8) & 0xff;
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tf->lbal = (u8)(block >> 24);
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if (sizeof(block) != 4) {
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tf->lbam = (u8)((u64)block >> 32);
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tf->lbah = (u8)((u64)block >> 40);
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}
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cmd.valid.out.hob = IDE_VALID_OUT_HOB;
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cmd.valid.in.hob = IDE_VALID_IN_HOB;
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cmd.tf_flags |= IDE_TFLAG_LBA48;
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} else {
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tf->nsect = nsectors & 0xff;
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tf->lbal = block;
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tf->lbam = block >>= 8;
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tf->lbah = block >>= 8;
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tf->device = ((block >> 8) & 0xf) | ATA_LBA;
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}
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} else {
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unsigned int sect, head, cyl, track;
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track = (int)block / drive->sect;
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sect = (int)block % drive->sect + 1;
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head = track % drive->head;
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cyl = track / drive->head;
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pr_debug("%s: CHS=%u/%u/%u\n", drive->name, cyl, head, sect);
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tf->nsect = nsectors & 0xff;
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tf->lbal = sect;
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tf->lbam = cyl;
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tf->lbah = cyl >> 8;
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tf->device = head;
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}
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cmd.tf_flags |= IDE_TFLAG_FS;
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if (rq_data_dir(rq))
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cmd.tf_flags |= IDE_TFLAG_WRITE;
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ide_tf_set_cmd(drive, &cmd, dma);
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cmd.rq = rq;
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if (dma == 0) {
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ide_init_sg_cmd(&cmd, nsectors << 9);
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ide_map_sg(drive, &cmd);
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}
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rc = do_rw_taskfile(drive, &cmd);
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if (rc == ide_stopped && dma) {
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/* fallback to PIO */
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cmd.tf_flags |= IDE_TFLAG_DMA_PIO_FALLBACK;
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ide_tf_set_cmd(drive, &cmd, 0);
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ide_init_sg_cmd(&cmd, nsectors << 9);
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rc = do_rw_taskfile(drive, &cmd);
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}
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return rc;
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}
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/*
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* 268435455 == 137439 MB or 28bit limit
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* 320173056 == 163929 MB or 48bit addressing
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* 1073741822 == 549756 MB or 48bit addressing fake drive
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*/
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static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
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sector_t block)
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{
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ide_hwif_t *hwif = drive->hwif;
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BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED);
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BUG_ON(!blk_fs_request(rq));
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ledtrig_ide_activity();
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pr_debug("%s: %sing: block=%llu, sectors=%u, buffer=0x%08lx\n",
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drive->name, rq_data_dir(rq) == READ ? "read" : "writ",
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(unsigned long long)block, blk_rq_sectors(rq),
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(unsigned long)rq->buffer);
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if (hwif->rw_disk)
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hwif->rw_disk(drive, rq);
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return __ide_do_rw_disk(drive, rq, block);
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}
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/*
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* Queries for true maximum capacity of the drive.
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* Returns maximum LBA address (> 0) of the drive, 0 if failed.
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*/
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static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48)
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{
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struct ide_cmd cmd;
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struct ide_taskfile *tf = &cmd.tf;
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u64 addr = 0;
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memset(&cmd, 0, sizeof(cmd));
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if (lba48)
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tf->command = ATA_CMD_READ_NATIVE_MAX_EXT;
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else
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tf->command = ATA_CMD_READ_NATIVE_MAX;
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tf->device = ATA_LBA;
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cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
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cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
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if (lba48) {
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cmd.valid.out.hob = IDE_VALID_OUT_HOB;
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cmd.valid.in.hob = IDE_VALID_IN_HOB;
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cmd.tf_flags = IDE_TFLAG_LBA48;
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}
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ide_no_data_taskfile(drive, &cmd);
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/* if OK, compute maximum address value */
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if (!(tf->status & ATA_ERR))
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addr = ide_get_lba_addr(&cmd, lba48) + 1;
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return addr;
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}
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/*
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* Sets maximum virtual LBA address of the drive.
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* Returns new maximum virtual LBA address (> 0) or 0 on failure.
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*/
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static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48)
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{
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struct ide_cmd cmd;
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struct ide_taskfile *tf = &cmd.tf;
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u64 addr_set = 0;
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addr_req--;
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memset(&cmd, 0, sizeof(cmd));
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tf->lbal = (addr_req >> 0) & 0xff;
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tf->lbam = (addr_req >>= 8) & 0xff;
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tf->lbah = (addr_req >>= 8) & 0xff;
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if (lba48) {
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cmd.hob.lbal = (addr_req >>= 8) & 0xff;
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cmd.hob.lbam = (addr_req >>= 8) & 0xff;
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cmd.hob.lbah = (addr_req >>= 8) & 0xff;
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tf->command = ATA_CMD_SET_MAX_EXT;
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} else {
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tf->device = (addr_req >>= 8) & 0x0f;
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tf->command = ATA_CMD_SET_MAX;
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}
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tf->device |= ATA_LBA;
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cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
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cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
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if (lba48) {
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cmd.valid.out.hob = IDE_VALID_OUT_HOB;
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cmd.valid.in.hob = IDE_VALID_IN_HOB;
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cmd.tf_flags = IDE_TFLAG_LBA48;
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}
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ide_no_data_taskfile(drive, &cmd);
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/* if OK, compute maximum address value */
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if (!(tf->status & ATA_ERR))
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addr_set = ide_get_lba_addr(&cmd, lba48) + 1;
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return addr_set;
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}
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static unsigned long long sectors_to_MB(unsigned long long n)
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{
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n <<= 9; /* make it bytes */
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do_div(n, 1000000); /* make it MB */
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return n;
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}
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/*
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* Some disks report total number of sectors instead of
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* maximum sector address. We list them here.
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*/
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static const struct drive_list_entry hpa_list[] = {
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{ "ST340823A", NULL },
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{ "ST320413A", NULL },
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{ "ST310211A", NULL },
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{ NULL, NULL }
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};
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static u64 ide_disk_hpa_get_native_capacity(ide_drive_t *drive, int lba48)
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{
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u64 capacity, set_max;
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capacity = drive->capacity64;
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set_max = idedisk_read_native_max_address(drive, lba48);
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if (ide_in_drive_list(drive->id, hpa_list)) {
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/*
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* Since we are inclusive wrt to firmware revisions do this
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* extra check and apply the workaround only when needed.
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*/
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if (set_max == capacity + 1)
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set_max--;
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}
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return set_max;
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}
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static u64 ide_disk_hpa_set_capacity(ide_drive_t *drive, u64 set_max, int lba48)
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{
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set_max = idedisk_set_max_address(drive, set_max, lba48);
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if (set_max)
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drive->capacity64 = set_max;
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return set_max;
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}
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static void idedisk_check_hpa(ide_drive_t *drive)
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{
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u64 capacity, set_max;
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int lba48 = ata_id_lba48_enabled(drive->id);
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capacity = drive->capacity64;
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set_max = ide_disk_hpa_get_native_capacity(drive, lba48);
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if (set_max <= capacity)
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return;
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drive->probed_capacity = set_max;
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printk(KERN_INFO "%s: Host Protected Area detected.\n"
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"\tcurrent capacity is %llu sectors (%llu MB)\n"
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"\tnative capacity is %llu sectors (%llu MB)\n",
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drive->name,
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capacity, sectors_to_MB(capacity),
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set_max, sectors_to_MB(set_max));
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if ((drive->dev_flags & IDE_DFLAG_NOHPA) == 0)
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return;
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set_max = ide_disk_hpa_set_capacity(drive, set_max, lba48);
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if (set_max)
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printk(KERN_INFO "%s: Host Protected Area disabled.\n",
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drive->name);
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}
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static int ide_disk_get_capacity(ide_drive_t *drive)
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{
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u16 *id = drive->id;
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int lba;
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if (ata_id_lba48_enabled(id)) {
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/* drive speaks 48-bit LBA */
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lba = 1;
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drive->capacity64 = ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
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} else if (ata_id_has_lba(id) && ata_id_is_lba_capacity_ok(id)) {
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/* drive speaks 28-bit LBA */
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lba = 1;
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drive->capacity64 = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
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} else {
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/* drive speaks boring old 28-bit CHS */
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lba = 0;
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drive->capacity64 = drive->cyl * drive->head * drive->sect;
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}
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drive->probed_capacity = drive->capacity64;
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if (lba) {
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drive->dev_flags |= IDE_DFLAG_LBA;
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/*
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* If this device supports the Host Protected Area feature set,
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* then we may need to change our opinion about its capacity.
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*/
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if (ata_id_hpa_enabled(id))
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idedisk_check_hpa(drive);
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}
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/* limit drive capacity to 137GB if LBA48 cannot be used */
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if ((drive->dev_flags & IDE_DFLAG_LBA48) == 0 &&
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drive->capacity64 > 1ULL << 28) {
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printk(KERN_WARNING "%s: cannot use LBA48 - full capacity "
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"%llu sectors (%llu MB)\n",
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drive->name, (unsigned long long)drive->capacity64,
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sectors_to_MB(drive->capacity64));
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drive->probed_capacity = drive->capacity64 = 1ULL << 28;
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}
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if ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) &&
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(drive->dev_flags & IDE_DFLAG_LBA48)) {
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if (drive->capacity64 > 1ULL << 28) {
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printk(KERN_INFO "%s: cannot use LBA48 DMA - PIO mode"
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" will be used for accessing sectors "
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"> %u\n", drive->name, 1 << 28);
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} else
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drive->dev_flags &= ~IDE_DFLAG_LBA48;
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}
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return 0;
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}
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static u64 ide_disk_set_capacity(ide_drive_t *drive, u64 capacity)
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{
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u64 set = min(capacity, drive->probed_capacity);
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u16 *id = drive->id;
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int lba48 = ata_id_lba48_enabled(id);
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if ((drive->dev_flags & IDE_DFLAG_LBA) == 0 ||
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ata_id_hpa_enabled(id) == 0)
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goto out;
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/*
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* according to the spec the SET MAX ADDRESS command shall be
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* immediately preceded by a READ NATIVE MAX ADDRESS command
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*/
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capacity = ide_disk_hpa_get_native_capacity(drive, lba48);
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if (capacity == 0)
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goto out;
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set = ide_disk_hpa_set_capacity(drive, set, lba48);
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if (set) {
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/* needed for ->resume to disable HPA */
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drive->dev_flags |= IDE_DFLAG_NOHPA;
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return set;
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}
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out:
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return drive->capacity64;
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}
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static void idedisk_prepare_flush(struct request_queue *q, struct request *rq)
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{
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ide_drive_t *drive = q->queuedata;
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struct ide_cmd *cmd = kmalloc(sizeof(*cmd), GFP_ATOMIC);
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/* FIXME: map struct ide_taskfile on rq->cmd[] */
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BUG_ON(cmd == NULL);
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memset(cmd, 0, sizeof(*cmd));
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if (ata_id_flush_ext_enabled(drive->id) &&
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(drive->capacity64 >= (1UL << 28)))
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cmd->tf.command = ATA_CMD_FLUSH_EXT;
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else
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cmd->tf.command = ATA_CMD_FLUSH;
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cmd->valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
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cmd->tf_flags = IDE_TFLAG_DYN;
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cmd->protocol = ATA_PROT_NODATA;
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rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
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rq->special = cmd;
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cmd->rq = rq;
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}
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ide_devset_get(multcount, mult_count);
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/*
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* This is tightly woven into the driver->do_special can not touch.
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* DON'T do it again until a total personality rewrite is committed.
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*/
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static int set_multcount(ide_drive_t *drive, int arg)
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{
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struct request *rq;
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int error;
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if (arg < 0 || arg > (drive->id[ATA_ID_MAX_MULTSECT] & 0xff))
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return -EINVAL;
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if (drive->special_flags & IDE_SFLAG_SET_MULTMODE)
|
|
return -EBUSY;
|
|
|
|
rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
|
|
rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
|
|
|
|
drive->mult_req = arg;
|
|
drive->special_flags |= IDE_SFLAG_SET_MULTMODE;
|
|
error = blk_execute_rq(drive->queue, NULL, rq, 0);
|
|
blk_put_request(rq);
|
|
|
|
return (drive->mult_count == arg) ? 0 : -EIO;
|
|
}
|
|
|
|
ide_devset_get_flag(nowerr, IDE_DFLAG_NOWERR);
|
|
|
|
static int set_nowerr(ide_drive_t *drive, int arg)
|
|
{
|
|
if (arg < 0 || arg > 1)
|
|
return -EINVAL;
|
|
|
|
if (arg)
|
|
drive->dev_flags |= IDE_DFLAG_NOWERR;
|
|
else
|
|
drive->dev_flags &= ~IDE_DFLAG_NOWERR;
|
|
|
|
drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ide_do_setfeature(ide_drive_t *drive, u8 feature, u8 nsect)
|
|
{
|
|
struct ide_cmd cmd;
|
|
|
|
memset(&cmd, 0, sizeof(cmd));
|
|
cmd.tf.feature = feature;
|
|
cmd.tf.nsect = nsect;
|
|
cmd.tf.command = ATA_CMD_SET_FEATURES;
|
|
cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
|
|
cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
|
|
|
|
return ide_no_data_taskfile(drive, &cmd);
|
|
}
|
|
|
|
static void update_ordered(ide_drive_t *drive)
|
|
{
|
|
u16 *id = drive->id;
|
|
unsigned ordered = QUEUE_ORDERED_NONE;
|
|
prepare_flush_fn *prep_fn = NULL;
|
|
|
|
if (drive->dev_flags & IDE_DFLAG_WCACHE) {
|
|
unsigned long long capacity;
|
|
int barrier;
|
|
/*
|
|
* We must avoid issuing commands a drive does not
|
|
* understand or we may crash it. We check flush cache
|
|
* is supported. We also check we have the LBA48 flush
|
|
* cache if the drive capacity is too large. By this
|
|
* time we have trimmed the drive capacity if LBA48 is
|
|
* not available so we don't need to recheck that.
|
|
*/
|
|
capacity = ide_gd_capacity(drive);
|
|
barrier = ata_id_flush_enabled(id) &&
|
|
(drive->dev_flags & IDE_DFLAG_NOFLUSH) == 0 &&
|
|
((drive->dev_flags & IDE_DFLAG_LBA48) == 0 ||
|
|
capacity <= (1ULL << 28) ||
|
|
ata_id_flush_ext_enabled(id));
|
|
|
|
printk(KERN_INFO "%s: cache flushes %ssupported\n",
|
|
drive->name, barrier ? "" : "not ");
|
|
|
|
if (barrier) {
|
|
ordered = QUEUE_ORDERED_DRAIN_FLUSH;
|
|
prep_fn = idedisk_prepare_flush;
|
|
}
|
|
} else
|
|
ordered = QUEUE_ORDERED_DRAIN;
|
|
|
|
blk_queue_ordered(drive->queue, ordered, prep_fn);
|
|
}
|
|
|
|
ide_devset_get_flag(wcache, IDE_DFLAG_WCACHE);
|
|
|
|
static int set_wcache(ide_drive_t *drive, int arg)
|
|
{
|
|
int err = 1;
|
|
|
|
if (arg < 0 || arg > 1)
|
|
return -EINVAL;
|
|
|
|
if (ata_id_flush_enabled(drive->id)) {
|
|
err = ide_do_setfeature(drive,
|
|
arg ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF, 0);
|
|
if (err == 0) {
|
|
if (arg)
|
|
drive->dev_flags |= IDE_DFLAG_WCACHE;
|
|
else
|
|
drive->dev_flags &= ~IDE_DFLAG_WCACHE;
|
|
}
|
|
}
|
|
|
|
update_ordered(drive);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int do_idedisk_flushcache(ide_drive_t *drive)
|
|
{
|
|
struct ide_cmd cmd;
|
|
|
|
memset(&cmd, 0, sizeof(cmd));
|
|
if (ata_id_flush_ext_enabled(drive->id))
|
|
cmd.tf.command = ATA_CMD_FLUSH_EXT;
|
|
else
|
|
cmd.tf.command = ATA_CMD_FLUSH;
|
|
cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
|
|
cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
|
|
|
|
return ide_no_data_taskfile(drive, &cmd);
|
|
}
|
|
|
|
ide_devset_get(acoustic, acoustic);
|
|
|
|
static int set_acoustic(ide_drive_t *drive, int arg)
|
|
{
|
|
if (arg < 0 || arg > 254)
|
|
return -EINVAL;
|
|
|
|
ide_do_setfeature(drive,
|
|
arg ? SETFEATURES_AAM_ON : SETFEATURES_AAM_OFF, arg);
|
|
|
|
drive->acoustic = arg;
|
|
|
|
return 0;
|
|
}
|
|
|
|
ide_devset_get_flag(addressing, IDE_DFLAG_LBA48);
|
|
|
|
/*
|
|
* drive->addressing:
|
|
* 0: 28-bit
|
|
* 1: 48-bit
|
|
* 2: 48-bit capable doing 28-bit
|
|
*/
|
|
static int set_addressing(ide_drive_t *drive, int arg)
|
|
{
|
|
if (arg < 0 || arg > 2)
|
|
return -EINVAL;
|
|
|
|
if (arg && ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48) ||
|
|
ata_id_lba48_enabled(drive->id) == 0))
|
|
return -EIO;
|
|
|
|
if (arg == 2)
|
|
arg = 0;
|
|
|
|
if (arg)
|
|
drive->dev_flags |= IDE_DFLAG_LBA48;
|
|
else
|
|
drive->dev_flags &= ~IDE_DFLAG_LBA48;
|
|
|
|
return 0;
|
|
}
|
|
|
|
ide_ext_devset_rw(acoustic, acoustic);
|
|
ide_ext_devset_rw(address, addressing);
|
|
ide_ext_devset_rw(multcount, multcount);
|
|
ide_ext_devset_rw(wcache, wcache);
|
|
|
|
ide_ext_devset_rw_sync(nowerr, nowerr);
|
|
|
|
static int ide_disk_check(ide_drive_t *drive, const char *s)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static void ide_disk_setup(ide_drive_t *drive)
|
|
{
|
|
struct ide_disk_obj *idkp = drive->driver_data;
|
|
struct request_queue *q = drive->queue;
|
|
ide_hwif_t *hwif = drive->hwif;
|
|
u16 *id = drive->id;
|
|
char *m = (char *)&id[ATA_ID_PROD];
|
|
unsigned long long capacity;
|
|
|
|
ide_proc_register_driver(drive, idkp->driver);
|
|
|
|
if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0)
|
|
return;
|
|
|
|
if (drive->dev_flags & IDE_DFLAG_REMOVABLE) {
|
|
/*
|
|
* Removable disks (eg. SYQUEST); ignore 'WD' drives
|
|
*/
|
|
if (m[0] != 'W' || m[1] != 'D')
|
|
drive->dev_flags |= IDE_DFLAG_DOORLOCKING;
|
|
}
|
|
|
|
(void)set_addressing(drive, 1);
|
|
|
|
if (drive->dev_flags & IDE_DFLAG_LBA48) {
|
|
int max_s = 2048;
|
|
|
|
if (max_s > hwif->rqsize)
|
|
max_s = hwif->rqsize;
|
|
|
|
blk_queue_max_sectors(q, max_s);
|
|
}
|
|
|
|
printk(KERN_INFO "%s: max request size: %dKiB\n", drive->name,
|
|
queue_max_sectors(q) / 2);
|
|
|
|
if (ata_id_is_ssd(id))
|
|
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q);
|
|
|
|
/* calculate drive capacity, and select LBA if possible */
|
|
ide_disk_get_capacity(drive);
|
|
|
|
/*
|
|
* if possible, give fdisk access to more of the drive,
|
|
* by correcting bios_cyls:
|
|
*/
|
|
capacity = ide_gd_capacity(drive);
|
|
|
|
if ((drive->dev_flags & IDE_DFLAG_FORCED_GEOM) == 0) {
|
|
if (ata_id_lba48_enabled(drive->id)) {
|
|
/* compatibility */
|
|
drive->bios_sect = 63;
|
|
drive->bios_head = 255;
|
|
}
|
|
|
|
if (drive->bios_sect && drive->bios_head) {
|
|
unsigned int cap0 = capacity; /* truncate to 32 bits */
|
|
unsigned int cylsz, cyl;
|
|
|
|
if (cap0 != capacity)
|
|
drive->bios_cyl = 65535;
|
|
else {
|
|
cylsz = drive->bios_sect * drive->bios_head;
|
|
cyl = cap0 / cylsz;
|
|
if (cyl > 65535)
|
|
cyl = 65535;
|
|
if (cyl > drive->bios_cyl)
|
|
drive->bios_cyl = cyl;
|
|
}
|
|
}
|
|
}
|
|
printk(KERN_INFO "%s: %llu sectors (%llu MB)",
|
|
drive->name, capacity, sectors_to_MB(capacity));
|
|
|
|
/* Only print cache size when it was specified */
|
|
if (id[ATA_ID_BUF_SIZE])
|
|
printk(KERN_CONT " w/%dKiB Cache", id[ATA_ID_BUF_SIZE] / 2);
|
|
|
|
printk(KERN_CONT ", CHS=%d/%d/%d\n",
|
|
drive->bios_cyl, drive->bios_head, drive->bios_sect);
|
|
|
|
/* write cache enabled? */
|
|
if ((id[ATA_ID_CSFO] & 1) || ata_id_wcache_enabled(id))
|
|
drive->dev_flags |= IDE_DFLAG_WCACHE;
|
|
|
|
set_wcache(drive, 1);
|
|
|
|
if ((drive->dev_flags & IDE_DFLAG_LBA) == 0 &&
|
|
(drive->head == 0 || drive->head > 16)) {
|
|
printk(KERN_ERR "%s: invalid geometry: %d physical heads?\n",
|
|
drive->name, drive->head);
|
|
drive->dev_flags &= ~IDE_DFLAG_ATTACH;
|
|
} else
|
|
drive->dev_flags |= IDE_DFLAG_ATTACH;
|
|
}
|
|
|
|
static void ide_disk_flush(ide_drive_t *drive)
|
|
{
|
|
if (ata_id_flush_enabled(drive->id) == 0 ||
|
|
(drive->dev_flags & IDE_DFLAG_WCACHE) == 0)
|
|
return;
|
|
|
|
if (do_idedisk_flushcache(drive))
|
|
printk(KERN_INFO "%s: wcache flush failed!\n", drive->name);
|
|
}
|
|
|
|
static int ide_disk_init_media(ide_drive_t *drive, struct gendisk *disk)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int ide_disk_set_doorlock(ide_drive_t *drive, struct gendisk *disk,
|
|
int on)
|
|
{
|
|
struct ide_cmd cmd;
|
|
int ret;
|
|
|
|
if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0)
|
|
return 0;
|
|
|
|
memset(&cmd, 0, sizeof(cmd));
|
|
cmd.tf.command = on ? ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK;
|
|
cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
|
|
cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
|
|
|
|
ret = ide_no_data_taskfile(drive, &cmd);
|
|
|
|
if (ret)
|
|
drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
|
|
|
|
return ret;
|
|
}
|
|
|
|
const struct ide_disk_ops ide_ata_disk_ops = {
|
|
.check = ide_disk_check,
|
|
.set_capacity = ide_disk_set_capacity,
|
|
.get_capacity = ide_disk_get_capacity,
|
|
.setup = ide_disk_setup,
|
|
.flush = ide_disk_flush,
|
|
.init_media = ide_disk_init_media,
|
|
.set_doorlock = ide_disk_set_doorlock,
|
|
.do_request = ide_do_rw_disk,
|
|
.ioctl = ide_disk_ioctl,
|
|
};
|