2005-04-16 16:20:36 -06:00
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/*
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* Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org>
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* Copyright (C) 2003 Red Hat <alan@redhat.com>
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*
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*/
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#include <linux/module.h>
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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/blkpg.h>
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#include <linux/slab.h>
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#include <linux/pci.h>
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#include <linux/delay.h>
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#include <linux/hdreg.h>
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#include <linux/ide.h>
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#include <linux/bitops.h>
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2006-07-30 04:03:29 -06:00
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#include <linux/nmi.h>
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2005-04-16 16:20:36 -06:00
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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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/*
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* Conventional PIO operations for ATA devices
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*/
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static u8 ide_inb (unsigned long port)
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{
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return (u8) inb(port);
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}
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static u16 ide_inw (unsigned long port)
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{
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return (u16) inw(port);
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}
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static void ide_insw (unsigned long port, void *addr, u32 count)
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{
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insw(port, addr, count);
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}
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static void ide_insl (unsigned long port, void *addr, u32 count)
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{
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insl(port, addr, count);
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}
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static void ide_outb (u8 val, unsigned long port)
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{
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outb(val, port);
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}
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static void ide_outbsync (ide_drive_t *drive, u8 addr, unsigned long port)
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{
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outb(addr, port);
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}
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static void ide_outw (u16 val, unsigned long port)
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{
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outw(val, port);
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}
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static void ide_outsw (unsigned long port, void *addr, u32 count)
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{
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outsw(port, addr, count);
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}
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static void ide_outsl (unsigned long port, void *addr, u32 count)
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{
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outsl(port, addr, count);
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}
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void default_hwif_iops (ide_hwif_t *hwif)
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{
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hwif->OUTB = ide_outb;
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hwif->OUTBSYNC = ide_outbsync;
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hwif->OUTW = ide_outw;
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hwif->OUTSW = ide_outsw;
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hwif->OUTSL = ide_outsl;
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hwif->INB = ide_inb;
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hwif->INW = ide_inw;
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hwif->INSW = ide_insw;
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hwif->INSL = ide_insl;
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}
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/*
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* MMIO operations, typically used for SATA controllers
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*/
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static u8 ide_mm_inb (unsigned long port)
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{
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return (u8) readb((void __iomem *) port);
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}
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static u16 ide_mm_inw (unsigned long port)
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{
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return (u16) readw((void __iomem *) port);
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}
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static void ide_mm_insw (unsigned long port, void *addr, u32 count)
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{
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__ide_mm_insw((void __iomem *) port, addr, count);
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}
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static void ide_mm_insl (unsigned long port, void *addr, u32 count)
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{
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__ide_mm_insl((void __iomem *) port, addr, count);
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}
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static void ide_mm_outb (u8 value, unsigned long port)
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{
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writeb(value, (void __iomem *) port);
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}
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static void ide_mm_outbsync (ide_drive_t *drive, u8 value, unsigned long port)
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{
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writeb(value, (void __iomem *) port);
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}
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static void ide_mm_outw (u16 value, unsigned long port)
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{
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writew(value, (void __iomem *) port);
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}
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static void ide_mm_outsw (unsigned long port, void *addr, u32 count)
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{
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__ide_mm_outsw((void __iomem *) port, addr, count);
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}
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static void ide_mm_outsl (unsigned long port, void *addr, u32 count)
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{
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__ide_mm_outsl((void __iomem *) port, addr, count);
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}
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void default_hwif_mmiops (ide_hwif_t *hwif)
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{
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hwif->OUTB = ide_mm_outb;
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/* Most systems will need to override OUTBSYNC, alas however
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this one is controller specific! */
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hwif->OUTBSYNC = ide_mm_outbsync;
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hwif->OUTW = ide_mm_outw;
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hwif->OUTSW = ide_mm_outsw;
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hwif->OUTSL = ide_mm_outsl;
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hwif->INB = ide_mm_inb;
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hwif->INW = ide_mm_inw;
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hwif->INSW = ide_mm_insw;
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hwif->INSL = ide_mm_insl;
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}
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EXPORT_SYMBOL(default_hwif_mmiops);
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void SELECT_DRIVE (ide_drive_t *drive)
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{
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if (HWIF(drive)->selectproc)
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HWIF(drive)->selectproc(drive);
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HWIF(drive)->OUTB(drive->select.all, IDE_SELECT_REG);
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}
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void SELECT_MASK (ide_drive_t *drive, int mask)
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{
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if (HWIF(drive)->maskproc)
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HWIF(drive)->maskproc(drive, mask);
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}
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/*
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* Some localbus EIDE interfaces require a special access sequence
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* when using 32-bit I/O instructions to transfer data. We call this
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* the "vlb_sync" sequence, which consists of three successive reads
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* of the sector count register location, with interrupts disabled
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* to ensure that the reads all happen together.
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*/
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static void ata_vlb_sync(ide_drive_t *drive, unsigned long port)
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{
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(void) HWIF(drive)->INB(port);
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(void) HWIF(drive)->INB(port);
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(void) HWIF(drive)->INB(port);
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}
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/*
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* This is used for most PIO data transfers *from* the IDE interface
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*/
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static void ata_input_data(ide_drive_t *drive, void *buffer, u32 wcount)
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{
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ide_hwif_t *hwif = HWIF(drive);
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u8 io_32bit = drive->io_32bit;
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if (io_32bit) {
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if (io_32bit & 2) {
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unsigned long flags;
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local_irq_save(flags);
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ata_vlb_sync(drive, IDE_NSECTOR_REG);
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hwif->INSL(IDE_DATA_REG, buffer, wcount);
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local_irq_restore(flags);
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} else
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hwif->INSL(IDE_DATA_REG, buffer, wcount);
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} else {
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hwif->INSW(IDE_DATA_REG, buffer, wcount<<1);
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}
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}
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/*
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* This is used for most PIO data transfers *to* the IDE interface
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*/
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static void ata_output_data(ide_drive_t *drive, void *buffer, u32 wcount)
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{
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ide_hwif_t *hwif = HWIF(drive);
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u8 io_32bit = drive->io_32bit;
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if (io_32bit) {
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if (io_32bit & 2) {
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unsigned long flags;
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local_irq_save(flags);
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ata_vlb_sync(drive, IDE_NSECTOR_REG);
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hwif->OUTSL(IDE_DATA_REG, buffer, wcount);
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local_irq_restore(flags);
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} else
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hwif->OUTSL(IDE_DATA_REG, buffer, wcount);
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} else {
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hwif->OUTSW(IDE_DATA_REG, buffer, wcount<<1);
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}
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}
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/*
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* The following routines are mainly used by the ATAPI drivers.
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*
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* These routines will round up any request for an odd number of bytes,
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* so if an odd bytecount is specified, be sure that there's at least one
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* extra byte allocated for the buffer.
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*/
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static void atapi_input_bytes(ide_drive_t *drive, void *buffer, u32 bytecount)
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{
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ide_hwif_t *hwif = HWIF(drive);
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++bytecount;
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#if defined(CONFIG_ATARI) || defined(CONFIG_Q40)
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if (MACH_IS_ATARI || MACH_IS_Q40) {
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/* Atari has a byte-swapped IDE interface */
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insw_swapw(IDE_DATA_REG, buffer, bytecount / 2);
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return;
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}
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#endif /* CONFIG_ATARI || CONFIG_Q40 */
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hwif->ata_input_data(drive, buffer, bytecount / 4);
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if ((bytecount & 0x03) >= 2)
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hwif->INSW(IDE_DATA_REG, ((u8 *)buffer)+(bytecount & ~0x03), 1);
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}
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static void atapi_output_bytes(ide_drive_t *drive, void *buffer, u32 bytecount)
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{
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ide_hwif_t *hwif = HWIF(drive);
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++bytecount;
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#if defined(CONFIG_ATARI) || defined(CONFIG_Q40)
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if (MACH_IS_ATARI || MACH_IS_Q40) {
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/* Atari has a byte-swapped IDE interface */
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outsw_swapw(IDE_DATA_REG, buffer, bytecount / 2);
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return;
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}
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#endif /* CONFIG_ATARI || CONFIG_Q40 */
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hwif->ata_output_data(drive, buffer, bytecount / 4);
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if ((bytecount & 0x03) >= 2)
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hwif->OUTSW(IDE_DATA_REG, ((u8*)buffer)+(bytecount & ~0x03), 1);
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}
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void default_hwif_transport(ide_hwif_t *hwif)
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{
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hwif->ata_input_data = ata_input_data;
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hwif->ata_output_data = ata_output_data;
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hwif->atapi_input_bytes = atapi_input_bytes;
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hwif->atapi_output_bytes = atapi_output_bytes;
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}
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void ide_fix_driveid (struct hd_driveid *id)
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{
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#ifndef __LITTLE_ENDIAN
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# ifdef __BIG_ENDIAN
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int i;
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u16 *stringcast;
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id->config = __le16_to_cpu(id->config);
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id->cyls = __le16_to_cpu(id->cyls);
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id->reserved2 = __le16_to_cpu(id->reserved2);
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id->heads = __le16_to_cpu(id->heads);
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id->track_bytes = __le16_to_cpu(id->track_bytes);
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id->sector_bytes = __le16_to_cpu(id->sector_bytes);
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id->sectors = __le16_to_cpu(id->sectors);
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id->vendor0 = __le16_to_cpu(id->vendor0);
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id->vendor1 = __le16_to_cpu(id->vendor1);
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id->vendor2 = __le16_to_cpu(id->vendor2);
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stringcast = (u16 *)&id->serial_no[0];
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for (i = 0; i < (20/2); i++)
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stringcast[i] = __le16_to_cpu(stringcast[i]);
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id->buf_type = __le16_to_cpu(id->buf_type);
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id->buf_size = __le16_to_cpu(id->buf_size);
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id->ecc_bytes = __le16_to_cpu(id->ecc_bytes);
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stringcast = (u16 *)&id->fw_rev[0];
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for (i = 0; i < (8/2); i++)
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stringcast[i] = __le16_to_cpu(stringcast[i]);
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stringcast = (u16 *)&id->model[0];
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for (i = 0; i < (40/2); i++)
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stringcast[i] = __le16_to_cpu(stringcast[i]);
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id->dword_io = __le16_to_cpu(id->dword_io);
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id->reserved50 = __le16_to_cpu(id->reserved50);
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id->field_valid = __le16_to_cpu(id->field_valid);
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id->cur_cyls = __le16_to_cpu(id->cur_cyls);
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id->cur_heads = __le16_to_cpu(id->cur_heads);
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id->cur_sectors = __le16_to_cpu(id->cur_sectors);
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id->cur_capacity0 = __le16_to_cpu(id->cur_capacity0);
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id->cur_capacity1 = __le16_to_cpu(id->cur_capacity1);
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id->lba_capacity = __le32_to_cpu(id->lba_capacity);
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id->dma_1word = __le16_to_cpu(id->dma_1word);
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id->dma_mword = __le16_to_cpu(id->dma_mword);
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id->eide_pio_modes = __le16_to_cpu(id->eide_pio_modes);
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id->eide_dma_min = __le16_to_cpu(id->eide_dma_min);
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id->eide_dma_time = __le16_to_cpu(id->eide_dma_time);
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id->eide_pio = __le16_to_cpu(id->eide_pio);
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id->eide_pio_iordy = __le16_to_cpu(id->eide_pio_iordy);
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for (i = 0; i < 2; ++i)
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id->words69_70[i] = __le16_to_cpu(id->words69_70[i]);
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for (i = 0; i < 4; ++i)
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id->words71_74[i] = __le16_to_cpu(id->words71_74[i]);
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id->queue_depth = __le16_to_cpu(id->queue_depth);
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for (i = 0; i < 4; ++i)
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id->words76_79[i] = __le16_to_cpu(id->words76_79[i]);
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id->major_rev_num = __le16_to_cpu(id->major_rev_num);
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id->minor_rev_num = __le16_to_cpu(id->minor_rev_num);
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id->command_set_1 = __le16_to_cpu(id->command_set_1);
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id->command_set_2 = __le16_to_cpu(id->command_set_2);
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id->cfsse = __le16_to_cpu(id->cfsse);
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id->cfs_enable_1 = __le16_to_cpu(id->cfs_enable_1);
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id->cfs_enable_2 = __le16_to_cpu(id->cfs_enable_2);
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id->csf_default = __le16_to_cpu(id->csf_default);
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id->dma_ultra = __le16_to_cpu(id->dma_ultra);
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|
|
id->trseuc = __le16_to_cpu(id->trseuc);
|
|
|
|
id->trsEuc = __le16_to_cpu(id->trsEuc);
|
|
|
|
id->CurAPMvalues = __le16_to_cpu(id->CurAPMvalues);
|
|
|
|
id->mprc = __le16_to_cpu(id->mprc);
|
|
|
|
id->hw_config = __le16_to_cpu(id->hw_config);
|
|
|
|
id->acoustic = __le16_to_cpu(id->acoustic);
|
|
|
|
id->msrqs = __le16_to_cpu(id->msrqs);
|
|
|
|
id->sxfert = __le16_to_cpu(id->sxfert);
|
|
|
|
id->sal = __le16_to_cpu(id->sal);
|
|
|
|
id->spg = __le32_to_cpu(id->spg);
|
|
|
|
id->lba_capacity_2 = __le64_to_cpu(id->lba_capacity_2);
|
|
|
|
for (i = 0; i < 22; i++)
|
|
|
|
id->words104_125[i] = __le16_to_cpu(id->words104_125[i]);
|
|
|
|
id->last_lun = __le16_to_cpu(id->last_lun);
|
|
|
|
id->word127 = __le16_to_cpu(id->word127);
|
|
|
|
id->dlf = __le16_to_cpu(id->dlf);
|
|
|
|
id->csfo = __le16_to_cpu(id->csfo);
|
|
|
|
for (i = 0; i < 26; i++)
|
|
|
|
id->words130_155[i] = __le16_to_cpu(id->words130_155[i]);
|
|
|
|
id->word156 = __le16_to_cpu(id->word156);
|
|
|
|
for (i = 0; i < 3; i++)
|
|
|
|
id->words157_159[i] = __le16_to_cpu(id->words157_159[i]);
|
|
|
|
id->cfa_power = __le16_to_cpu(id->cfa_power);
|
|
|
|
for (i = 0; i < 14; i++)
|
|
|
|
id->words161_175[i] = __le16_to_cpu(id->words161_175[i]);
|
|
|
|
for (i = 0; i < 31; i++)
|
|
|
|
id->words176_205[i] = __le16_to_cpu(id->words176_205[i]);
|
|
|
|
for (i = 0; i < 48; i++)
|
|
|
|
id->words206_254[i] = __le16_to_cpu(id->words206_254[i]);
|
|
|
|
id->integrity_word = __le16_to_cpu(id->integrity_word);
|
|
|
|
# else
|
|
|
|
# error "Please fix <asm/byteorder.h>"
|
|
|
|
# endif
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
2007-11-05 13:42:29 -07:00
|
|
|
/*
|
|
|
|
* ide_fixstring() cleans up and (optionally) byte-swaps a text string,
|
|
|
|
* removing leading/trailing blanks and compressing internal blanks.
|
|
|
|
* It is primarily used to tidy up the model name/number fields as
|
|
|
|
* returned by the WIN_[P]IDENTIFY commands.
|
|
|
|
*/
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
void ide_fixstring (u8 *s, const int bytecount, const int byteswap)
|
|
|
|
{
|
|
|
|
u8 *p = s, *end = &s[bytecount & ~1]; /* bytecount must be even */
|
|
|
|
|
|
|
|
if (byteswap) {
|
|
|
|
/* convert from big-endian to host byte order */
|
|
|
|
for (p = end ; p != s;) {
|
|
|
|
unsigned short *pp = (unsigned short *) (p -= 2);
|
|
|
|
*pp = ntohs(*pp);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/* strip leading blanks */
|
|
|
|
while (s != end && *s == ' ')
|
|
|
|
++s;
|
|
|
|
/* compress internal blanks and strip trailing blanks */
|
|
|
|
while (s != end && *s) {
|
|
|
|
if (*s++ != ' ' || (s != end && *s && *s != ' '))
|
|
|
|
*p++ = *(s-1);
|
|
|
|
}
|
|
|
|
/* wipe out trailing garbage */
|
|
|
|
while (p != end)
|
|
|
|
*p++ = '\0';
|
|
|
|
}
|
|
|
|
|
|
|
|
EXPORT_SYMBOL(ide_fixstring);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Needed for PCI irq sharing
|
|
|
|
*/
|
|
|
|
int drive_is_ready (ide_drive_t *drive)
|
|
|
|
{
|
|
|
|
ide_hwif_t *hwif = HWIF(drive);
|
|
|
|
u8 stat = 0;
|
|
|
|
|
|
|
|
if (drive->waiting_for_dma)
|
|
|
|
return hwif->ide_dma_test_irq(drive);
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
/* need to guarantee 400ns since last command was issued */
|
|
|
|
udelay(1);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We do a passive status test under shared PCI interrupts on
|
|
|
|
* cards that truly share the ATA side interrupt, but may also share
|
|
|
|
* an interrupt with another pci card/device. We make no assumptions
|
|
|
|
* about possible isa-pnp and pci-pnp issues yet.
|
|
|
|
*/
|
|
|
|
if (IDE_CONTROL_REG)
|
|
|
|
stat = hwif->INB(IDE_ALTSTATUS_REG);
|
|
|
|
else
|
|
|
|
/* Note: this may clear a pending IRQ!! */
|
|
|
|
stat = hwif->INB(IDE_STATUS_REG);
|
|
|
|
|
|
|
|
if (stat & BUSY_STAT)
|
|
|
|
/* drive busy: definitely not interrupting */
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
/* drive ready: *might* be interrupting */
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
EXPORT_SYMBOL(drive_is_ready);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This routine busy-waits for the drive status to be not "busy".
|
|
|
|
* It then checks the status for all of the "good" bits and none
|
|
|
|
* of the "bad" bits, and if all is okay it returns 0. All other
|
2007-10-13 09:47:49 -06:00
|
|
|
* cases return error -- caller may then invoke ide_error().
|
2005-04-16 16:20:36 -06:00
|
|
|
*
|
|
|
|
* This routine should get fixed to not hog the cpu during extra long waits..
|
|
|
|
* That could be done by busy-waiting for the first jiffy or two, and then
|
|
|
|
* setting a timer to wake up at half second intervals thereafter,
|
|
|
|
* until timeout is achieved, before timing out.
|
|
|
|
*/
|
2007-10-13 09:47:50 -06:00
|
|
|
static int __ide_wait_stat(ide_drive_t *drive, u8 good, u8 bad, unsigned long timeout, u8 *rstat)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2007-10-13 09:47:49 -06:00
|
|
|
ide_hwif_t *hwif = drive->hwif;
|
2005-04-16 16:20:36 -06:00
|
|
|
unsigned long flags;
|
2007-10-13 09:47:49 -06:00
|
|
|
int i;
|
|
|
|
u8 stat;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
udelay(1); /* spec allows drive 400ns to assert "BUSY" */
|
|
|
|
if ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) {
|
|
|
|
local_irq_set(flags);
|
|
|
|
timeout += jiffies;
|
|
|
|
while ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) {
|
|
|
|
if (time_after(jiffies, timeout)) {
|
|
|
|
/*
|
|
|
|
* One last read after the timeout in case
|
|
|
|
* heavy interrupt load made us not make any
|
|
|
|
* progress during the timeout..
|
|
|
|
*/
|
|
|
|
stat = hwif->INB(IDE_STATUS_REG);
|
|
|
|
if (!(stat & BUSY_STAT))
|
|
|
|
break;
|
|
|
|
|
|
|
|
local_irq_restore(flags);
|
2007-10-13 09:47:49 -06:00
|
|
|
*rstat = stat;
|
|
|
|
return -EBUSY;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
local_irq_restore(flags);
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Allow status to settle, then read it again.
|
|
|
|
* A few rare drives vastly violate the 400ns spec here,
|
|
|
|
* so we'll wait up to 10usec for a "good" status
|
|
|
|
* rather than expensively fail things immediately.
|
|
|
|
* This fix courtesy of Matthew Faupel & Niccolo Rigacci.
|
|
|
|
*/
|
|
|
|
for (i = 0; i < 10; i++) {
|
|
|
|
udelay(1);
|
2007-10-13 09:47:49 -06:00
|
|
|
if (OK_STAT((stat = hwif->INB(IDE_STATUS_REG)), good, bad)) {
|
|
|
|
*rstat = stat;
|
2005-04-16 16:20:36 -06:00
|
|
|
return 0;
|
2007-10-13 09:47:49 -06:00
|
|
|
}
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
2007-10-13 09:47:49 -06:00
|
|
|
*rstat = stat;
|
|
|
|
return -EFAULT;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* In case of error returns error value after doing "*startstop = ide_error()".
|
|
|
|
* The caller should return the updated value of "startstop" in this case,
|
|
|
|
* "startstop" is unchanged when the function returns 0.
|
|
|
|
*/
|
|
|
|
int ide_wait_stat(ide_startstop_t *startstop, ide_drive_t *drive, u8 good, u8 bad, unsigned long timeout)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
u8 stat;
|
|
|
|
|
|
|
|
/* bail early if we've exceeded max_failures */
|
|
|
|
if (drive->max_failures && (drive->failures > drive->max_failures)) {
|
|
|
|
*startstop = ide_stopped;
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = __ide_wait_stat(drive, good, bad, timeout, &stat);
|
|
|
|
|
|
|
|
if (err) {
|
|
|
|
char *s = (err == -EBUSY) ? "status timeout" : "status error";
|
|
|
|
*startstop = ide_error(drive, s, stat);
|
|
|
|
}
|
|
|
|
|
|
|
|
return err;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
EXPORT_SYMBOL(ide_wait_stat);
|
|
|
|
|
2007-08-20 14:42:56 -06:00
|
|
|
/**
|
|
|
|
* ide_in_drive_list - look for drive in black/white list
|
|
|
|
* @id: drive identifier
|
|
|
|
* @drive_table: list to inspect
|
|
|
|
*
|
|
|
|
* Look for a drive in the blacklist and the whitelist tables
|
|
|
|
* Returns 1 if the drive is found in the table.
|
|
|
|
*/
|
|
|
|
|
|
|
|
int ide_in_drive_list(struct hd_driveid *id, const struct drive_list_entry *drive_table)
|
|
|
|
{
|
|
|
|
for ( ; drive_table->id_model; drive_table++)
|
|
|
|
if ((!strcmp(drive_table->id_model, id->model)) &&
|
|
|
|
(!drive_table->id_firmware ||
|
|
|
|
strstr(id->fw_rev, drive_table->id_firmware)))
|
|
|
|
return 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-08-20 14:42:57 -06:00
|
|
|
EXPORT_SYMBOL_GPL(ide_in_drive_list);
|
|
|
|
|
2007-08-20 14:42:56 -06:00
|
|
|
/*
|
|
|
|
* Early UDMA66 devices don't set bit14 to 1, only bit13 is valid.
|
|
|
|
* We list them here and depend on the device side cable detection for them.
|
2007-10-26 12:31:16 -06:00
|
|
|
*
|
|
|
|
* Some optical devices with the buggy firmwares have the same problem.
|
2007-08-20 14:42:56 -06:00
|
|
|
*/
|
|
|
|
static const struct drive_list_entry ivb_list[] = {
|
|
|
|
{ "QUANTUM FIREBALLlct10 05" , "A03.0900" },
|
2007-10-26 12:31:16 -06:00
|
|
|
{ "TSSTcorp CDDVDW SH-S202J" , "SB00" },
|
2007-11-27 13:35:57 -07:00
|
|
|
{ "TSSTcorp CDDVDW SH-S202J" , "SB01" },
|
|
|
|
{ "TSSTcorp CDDVDW SH-S202N" , "SB00" },
|
|
|
|
{ "TSSTcorp CDDVDW SH-S202N" , "SB01" },
|
2007-08-20 14:42:56 -06:00
|
|
|
{ NULL , NULL }
|
|
|
|
};
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* All hosts that use the 80c ribbon must use!
|
|
|
|
* The name is derived from upper byte of word 93 and the 80c ribbon.
|
|
|
|
*/
|
|
|
|
u8 eighty_ninty_three (ide_drive_t *drive)
|
|
|
|
{
|
2007-05-09 16:01:10 -06:00
|
|
|
ide_hwif_t *hwif = drive->hwif;
|
|
|
|
struct hd_driveid *id = drive->id;
|
2007-08-20 14:42:56 -06:00
|
|
|
int ivb = ide_in_drive_list(id, ivb_list);
|
2007-05-09 16:01:10 -06:00
|
|
|
|
2007-07-09 15:17:58 -06:00
|
|
|
if (hwif->cbl == ATA_CBL_PATA40_SHORT)
|
|
|
|
return 1;
|
|
|
|
|
2007-08-20 14:42:56 -06:00
|
|
|
if (ivb)
|
|
|
|
printk(KERN_DEBUG "%s: skipping word 93 validity check\n",
|
|
|
|
drive->name);
|
|
|
|
|
2008-01-10 15:03:42 -07:00
|
|
|
if (ide_dev_is_sata(id) && !ivb)
|
|
|
|
return 1;
|
|
|
|
|
2007-08-20 14:42:56 -06:00
|
|
|
if (hwif->cbl != ATA_CBL_PATA80 && !ivb)
|
2007-05-09 16:01:10 -06:00
|
|
|
goto no_80w;
|
2006-06-28 05:26:58 -06:00
|
|
|
|
2007-03-26 15:03:18 -06:00
|
|
|
/*
|
|
|
|
* FIXME:
|
2007-08-20 14:42:56 -06:00
|
|
|
* - force bit13 (80c cable present) check also for !ivb devices
|
2007-03-26 15:03:18 -06:00
|
|
|
* (unless the slave device is pre-ATA3)
|
|
|
|
*/
|
2007-08-20 14:42:56 -06:00
|
|
|
if ((id->hw_config & 0x4000) || (ivb && (id->hw_config & 0x2000)))
|
2007-05-09 16:01:10 -06:00
|
|
|
return 1;
|
|
|
|
|
|
|
|
no_80w:
|
|
|
|
if (drive->udma33_warned == 1)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
printk(KERN_WARNING "%s: %s side 80-wire cable detection failed, "
|
|
|
|
"limiting max speed to UDMA33\n",
|
2007-07-09 15:17:58 -06:00
|
|
|
drive->name,
|
|
|
|
hwif->cbl == ATA_CBL_PATA80 ? "drive" : "host");
|
2007-05-09 16:01:10 -06:00
|
|
|
|
|
|
|
drive->udma33_warned = 1;
|
|
|
|
|
|
|
|
return 0;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2007-10-19 16:32:36 -06:00
|
|
|
int ide_driveid_update(ide_drive_t *drive)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2007-10-19 16:32:36 -06:00
|
|
|
ide_hwif_t *hwif = drive->hwif;
|
2005-04-16 16:20:36 -06:00
|
|
|
struct hd_driveid *id;
|
2007-10-19 16:32:36 -06:00
|
|
|
unsigned long timeout, flags;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Re-read drive->id for possible DMA mode
|
|
|
|
* change (copied from ide-probe.c)
|
|
|
|
*/
|
|
|
|
|
|
|
|
SELECT_MASK(drive, 1);
|
2008-01-26 12:13:08 -07:00
|
|
|
ide_set_irq(drive, 1);
|
2005-04-16 16:20:36 -06:00
|
|
|
msleep(50);
|
|
|
|
hwif->OUTB(WIN_IDENTIFY, IDE_COMMAND_REG);
|
|
|
|
timeout = jiffies + WAIT_WORSTCASE;
|
|
|
|
do {
|
|
|
|
if (time_after(jiffies, timeout)) {
|
|
|
|
SELECT_MASK(drive, 0);
|
|
|
|
return 0; /* drive timed-out */
|
|
|
|
}
|
|
|
|
msleep(50); /* give drive a breather */
|
|
|
|
} while (hwif->INB(IDE_ALTSTATUS_REG) & BUSY_STAT);
|
|
|
|
msleep(50); /* wait for IRQ and DRQ_STAT */
|
|
|
|
if (!OK_STAT(hwif->INB(IDE_STATUS_REG),DRQ_STAT,BAD_R_STAT)) {
|
|
|
|
SELECT_MASK(drive, 0);
|
|
|
|
printk("%s: CHECK for good STATUS\n", drive->name);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
local_irq_save(flags);
|
|
|
|
SELECT_MASK(drive, 0);
|
|
|
|
id = kmalloc(SECTOR_WORDS*4, GFP_ATOMIC);
|
|
|
|
if (!id) {
|
|
|
|
local_irq_restore(flags);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
ata_input_data(drive, id, SECTOR_WORDS);
|
|
|
|
(void) hwif->INB(IDE_STATUS_REG); /* clear drive IRQ */
|
|
|
|
local_irq_enable();
|
|
|
|
local_irq_restore(flags);
|
|
|
|
ide_fix_driveid(id);
|
|
|
|
if (id) {
|
|
|
|
drive->id->dma_ultra = id->dma_ultra;
|
|
|
|
drive->id->dma_mword = id->dma_mword;
|
|
|
|
drive->id->dma_1word = id->dma_1word;
|
|
|
|
/* anything more ? */
|
|
|
|
kfree(id);
|
2007-12-12 15:31:58 -07:00
|
|
|
|
|
|
|
if (drive->using_dma && ide_id_dma_bug(drive))
|
|
|
|
ide_dma_off(drive);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2007-10-13 09:47:49 -06:00
|
|
|
int ide_config_drive_speed(ide_drive_t *drive, u8 speed)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2007-10-13 09:47:49 -06:00
|
|
|
ide_hwif_t *hwif = drive->hwif;
|
2007-11-27 13:35:52 -07:00
|
|
|
int error = 0;
|
2005-04-16 16:20:36 -06:00
|
|
|
u8 stat;
|
|
|
|
|
|
|
|
// while (HWGROUP(drive)->busy)
|
|
|
|
// msleep(50);
|
|
|
|
|
|
|
|
#ifdef CONFIG_BLK_DEV_IDEDMA
|
2008-01-26 12:13:03 -07:00
|
|
|
if (hwif->dma_host_set) /* check if host supports DMA */
|
|
|
|
hwif->dma_host_set(drive, 0);
|
2005-04-16 16:20:36 -06:00
|
|
|
#endif
|
|
|
|
|
2007-11-27 13:35:52 -07:00
|
|
|
/* Skip setting PIO flow-control modes on pre-EIDE drives */
|
|
|
|
if ((speed & 0xf8) == XFER_PIO_0 && !(drive->id->capability & 0x08))
|
|
|
|
goto skip;
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* Don't use ide_wait_cmd here - it will
|
|
|
|
* attempt to set_geometry and recalibrate,
|
|
|
|
* but for some reason these don't work at
|
|
|
|
* this point (lost interrupt).
|
|
|
|
*/
|
|
|
|
/*
|
|
|
|
* Select the drive, and issue the SETFEATURES command
|
|
|
|
*/
|
|
|
|
disable_irq_nosync(hwif->irq);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* FIXME: we race against the running IRQ here if
|
|
|
|
* this is called from non IRQ context. If we use
|
|
|
|
* disable_irq() we hang on the error path. Work
|
|
|
|
* is needed.
|
|
|
|
*/
|
|
|
|
|
|
|
|
udelay(1);
|
|
|
|
SELECT_DRIVE(drive);
|
|
|
|
SELECT_MASK(drive, 0);
|
|
|
|
udelay(1);
|
2008-01-26 12:13:08 -07:00
|
|
|
ide_set_irq(drive, 0);
|
2005-04-16 16:20:36 -06:00
|
|
|
hwif->OUTB(speed, IDE_NSECTOR_REG);
|
|
|
|
hwif->OUTB(SETFEATURES_XFER, IDE_FEATURE_REG);
|
2007-08-20 14:42:56 -06:00
|
|
|
hwif->OUTBSYNC(drive, WIN_SETFEATURES, IDE_COMMAND_REG);
|
2008-01-26 12:13:08 -07:00
|
|
|
if (drive->quirk_list == 2)
|
|
|
|
ide_set_irq(drive, 1);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-10-13 09:47:49 -06:00
|
|
|
error = __ide_wait_stat(drive, drive->ready_stat,
|
|
|
|
BUSY_STAT|DRQ_STAT|ERR_STAT,
|
|
|
|
WAIT_CMD, &stat);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
SELECT_MASK(drive, 0);
|
|
|
|
|
|
|
|
enable_irq(hwif->irq);
|
|
|
|
|
|
|
|
if (error) {
|
|
|
|
(void) ide_dump_status(drive, "set_drive_speed_status", stat);
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
drive->id->dma_ultra &= ~0xFF00;
|
|
|
|
drive->id->dma_mword &= ~0x0F00;
|
|
|
|
drive->id->dma_1word &= ~0x0F00;
|
|
|
|
|
2007-11-27 13:35:52 -07:00
|
|
|
skip:
|
2005-04-16 16:20:36 -06:00
|
|
|
#ifdef CONFIG_BLK_DEV_IDEDMA
|
2008-01-26 12:13:02 -07:00
|
|
|
if ((speed >= XFER_SW_DMA_0 || (hwif->host_flags & IDE_HFLAG_VDMA)) &&
|
|
|
|
drive->using_dma)
|
2008-01-26 12:13:03 -07:00
|
|
|
hwif->dma_host_set(drive, 1);
|
|
|
|
else if (hwif->dma_host_set) /* check if host supports DMA */
|
2008-01-26 12:13:01 -07:00
|
|
|
ide_dma_off_quietly(drive);
|
2005-04-16 16:20:36 -06:00
|
|
|
#endif
|
|
|
|
|
|
|
|
switch(speed) {
|
|
|
|
case XFER_UDMA_7: drive->id->dma_ultra |= 0x8080; break;
|
|
|
|
case XFER_UDMA_6: drive->id->dma_ultra |= 0x4040; break;
|
|
|
|
case XFER_UDMA_5: drive->id->dma_ultra |= 0x2020; break;
|
|
|
|
case XFER_UDMA_4: drive->id->dma_ultra |= 0x1010; break;
|
|
|
|
case XFER_UDMA_3: drive->id->dma_ultra |= 0x0808; break;
|
|
|
|
case XFER_UDMA_2: drive->id->dma_ultra |= 0x0404; break;
|
|
|
|
case XFER_UDMA_1: drive->id->dma_ultra |= 0x0202; break;
|
|
|
|
case XFER_UDMA_0: drive->id->dma_ultra |= 0x0101; break;
|
|
|
|
case XFER_MW_DMA_2: drive->id->dma_mword |= 0x0404; break;
|
|
|
|
case XFER_MW_DMA_1: drive->id->dma_mword |= 0x0202; break;
|
|
|
|
case XFER_MW_DMA_0: drive->id->dma_mword |= 0x0101; break;
|
|
|
|
case XFER_SW_DMA_2: drive->id->dma_1word |= 0x0404; break;
|
|
|
|
case XFER_SW_DMA_1: drive->id->dma_1word |= 0x0202; break;
|
|
|
|
case XFER_SW_DMA_0: drive->id->dma_1word |= 0x0101; break;
|
|
|
|
default: break;
|
|
|
|
}
|
|
|
|
if (!drive->init_speed)
|
|
|
|
drive->init_speed = speed;
|
|
|
|
drive->current_speed = speed;
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This should get invoked any time we exit the driver to
|
|
|
|
* wait for an interrupt response from a drive. handler() points
|
|
|
|
* at the appropriate code to handle the next interrupt, and a
|
|
|
|
* timer is started to prevent us from waiting forever in case
|
|
|
|
* something goes wrong (see the ide_timer_expiry() handler later on).
|
|
|
|
*
|
|
|
|
* See also ide_execute_command
|
|
|
|
*/
|
|
|
|
static void __ide_set_handler (ide_drive_t *drive, ide_handler_t *handler,
|
|
|
|
unsigned int timeout, ide_expiry_t *expiry)
|
|
|
|
{
|
|
|
|
ide_hwgroup_t *hwgroup = HWGROUP(drive);
|
|
|
|
|
|
|
|
if (hwgroup->handler != NULL) {
|
|
|
|
printk(KERN_CRIT "%s: ide_set_handler: handler not null; "
|
|
|
|
"old=%p, new=%p\n",
|
|
|
|
drive->name, hwgroup->handler, handler);
|
|
|
|
}
|
|
|
|
hwgroup->handler = handler;
|
|
|
|
hwgroup->expiry = expiry;
|
|
|
|
hwgroup->timer.expires = jiffies + timeout;
|
2007-04-10 14:38:37 -06:00
|
|
|
hwgroup->req_gen_timer = hwgroup->req_gen;
|
2005-04-16 16:20:36 -06:00
|
|
|
add_timer(&hwgroup->timer);
|
|
|
|
}
|
|
|
|
|
|
|
|
void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler,
|
|
|
|
unsigned int timeout, ide_expiry_t *expiry)
|
|
|
|
{
|
|
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&ide_lock, flags);
|
|
|
|
__ide_set_handler(drive, handler, timeout, expiry);
|
|
|
|
spin_unlock_irqrestore(&ide_lock, flags);
|
|
|
|
}
|
|
|
|
|
|
|
|
EXPORT_SYMBOL(ide_set_handler);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ide_execute_command - execute an IDE command
|
|
|
|
* @drive: IDE drive to issue the command against
|
|
|
|
* @command: command byte to write
|
|
|
|
* @handler: handler for next phase
|
|
|
|
* @timeout: timeout for command
|
|
|
|
* @expiry: handler to run on timeout
|
|
|
|
*
|
|
|
|
* Helper function to issue an IDE command. This handles the
|
|
|
|
* atomicity requirements, command timing and ensures that the
|
|
|
|
* handler and IRQ setup do not race. All IDE command kick off
|
|
|
|
* should go via this function or do equivalent locking.
|
|
|
|
*/
|
2008-01-25 14:17:06 -07:00
|
|
|
|
|
|
|
void ide_execute_command(ide_drive_t *drive, u8 cmd, ide_handler_t *handler,
|
|
|
|
unsigned timeout, ide_expiry_t *expiry)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
unsigned long flags;
|
|
|
|
ide_hwgroup_t *hwgroup = HWGROUP(drive);
|
|
|
|
ide_hwif_t *hwif = HWIF(drive);
|
2008-02-02 11:56:46 -07:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
spin_lock_irqsave(&ide_lock, flags);
|
2006-06-23 03:06:06 -06:00
|
|
|
BUG_ON(hwgroup->handler);
|
2008-02-02 11:56:46 -07:00
|
|
|
__ide_set_handler(drive, handler, timeout, expiry);
|
2005-04-16 16:20:36 -06:00
|
|
|
hwif->OUTBSYNC(drive, cmd, IDE_COMMAND_REG);
|
2008-02-02 11:56:46 -07:00
|
|
|
/*
|
|
|
|
* Drive takes 400nS to respond, we must avoid the IRQ being
|
|
|
|
* serviced before that.
|
|
|
|
*
|
|
|
|
* FIXME: we could skip this delay with care on non shared devices
|
|
|
|
*/
|
2005-04-16 16:20:36 -06:00
|
|
|
ndelay(400);
|
|
|
|
spin_unlock_irqrestore(&ide_lock, flags);
|
|
|
|
}
|
|
|
|
|
|
|
|
EXPORT_SYMBOL(ide_execute_command);
|
|
|
|
|
|
|
|
|
|
|
|
/* needed below */
|
|
|
|
static ide_startstop_t do_reset1 (ide_drive_t *, int);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* atapi_reset_pollfunc() gets invoked to poll the interface for completion every 50ms
|
|
|
|
* during an atapi drive reset operation. If the drive has not yet responded,
|
|
|
|
* and we have not yet hit our maximum waiting time, then the timer is restarted
|
|
|
|
* for another 50ms.
|
|
|
|
*/
|
|
|
|
static ide_startstop_t atapi_reset_pollfunc (ide_drive_t *drive)
|
|
|
|
{
|
|
|
|
ide_hwgroup_t *hwgroup = HWGROUP(drive);
|
|
|
|
ide_hwif_t *hwif = HWIF(drive);
|
|
|
|
u8 stat;
|
|
|
|
|
|
|
|
SELECT_DRIVE(drive);
|
|
|
|
udelay (10);
|
|
|
|
|
|
|
|
if (OK_STAT(stat = hwif->INB(IDE_STATUS_REG), 0, BUSY_STAT)) {
|
|
|
|
printk("%s: ATAPI reset complete\n", drive->name);
|
|
|
|
} else {
|
|
|
|
if (time_before(jiffies, hwgroup->poll_timeout)) {
|
|
|
|
ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL);
|
|
|
|
/* continue polling */
|
|
|
|
return ide_started;
|
|
|
|
}
|
|
|
|
/* end of polling */
|
|
|
|
hwgroup->polling = 0;
|
|
|
|
printk("%s: ATAPI reset timed-out, status=0x%02x\n",
|
|
|
|
drive->name, stat);
|
|
|
|
/* do it the old fashioned way */
|
|
|
|
return do_reset1(drive, 1);
|
|
|
|
}
|
|
|
|
/* done polling */
|
|
|
|
hwgroup->polling = 0;
|
2006-10-03 02:14:33 -06:00
|
|
|
hwgroup->resetting = 0;
|
2005-04-16 16:20:36 -06:00
|
|
|
return ide_stopped;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* reset_pollfunc() gets invoked to poll the interface for completion every 50ms
|
|
|
|
* during an ide reset operation. If the drives have not yet responded,
|
|
|
|
* and we have not yet hit our maximum waiting time, then the timer is restarted
|
|
|
|
* for another 50ms.
|
|
|
|
*/
|
|
|
|
static ide_startstop_t reset_pollfunc (ide_drive_t *drive)
|
|
|
|
{
|
|
|
|
ide_hwgroup_t *hwgroup = HWGROUP(drive);
|
|
|
|
ide_hwif_t *hwif = HWIF(drive);
|
|
|
|
u8 tmp;
|
|
|
|
|
|
|
|
if (hwif->reset_poll != NULL) {
|
|
|
|
if (hwif->reset_poll(drive)) {
|
|
|
|
printk(KERN_ERR "%s: host reset_poll failure for %s.\n",
|
|
|
|
hwif->name, drive->name);
|
|
|
|
return ide_stopped;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!OK_STAT(tmp = hwif->INB(IDE_STATUS_REG), 0, BUSY_STAT)) {
|
|
|
|
if (time_before(jiffies, hwgroup->poll_timeout)) {
|
|
|
|
ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL);
|
|
|
|
/* continue polling */
|
|
|
|
return ide_started;
|
|
|
|
}
|
|
|
|
printk("%s: reset timed-out, status=0x%02x\n", hwif->name, tmp);
|
|
|
|
drive->failures++;
|
|
|
|
} else {
|
|
|
|
printk("%s: reset: ", hwif->name);
|
|
|
|
if ((tmp = hwif->INB(IDE_ERROR_REG)) == 1) {
|
|
|
|
printk("success\n");
|
|
|
|
drive->failures = 0;
|
|
|
|
} else {
|
|
|
|
drive->failures++;
|
|
|
|
printk("master: ");
|
|
|
|
switch (tmp & 0x7f) {
|
|
|
|
case 1: printk("passed");
|
|
|
|
break;
|
|
|
|
case 2: printk("formatter device error");
|
|
|
|
break;
|
|
|
|
case 3: printk("sector buffer error");
|
|
|
|
break;
|
|
|
|
case 4: printk("ECC circuitry error");
|
|
|
|
break;
|
|
|
|
case 5: printk("controlling MPU error");
|
|
|
|
break;
|
|
|
|
default:printk("error (0x%02x?)", tmp);
|
|
|
|
}
|
|
|
|
if (tmp & 0x80)
|
|
|
|
printk("; slave: failed");
|
|
|
|
printk("\n");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
hwgroup->polling = 0; /* done polling */
|
2006-10-03 02:14:33 -06:00
|
|
|
hwgroup->resetting = 0; /* done reset attempt */
|
2005-04-16 16:20:36 -06:00
|
|
|
return ide_stopped;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ide_disk_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;
|
2008-01-25 14:17:08 -07:00
|
|
|
drive->mult_count = 0;
|
2005-04-16 16:20:36 -06:00
|
|
|
if (!drive->keep_settings && !drive->using_dma)
|
|
|
|
drive->mult_req = 0;
|
|
|
|
if (drive->mult_req != drive->mult_count)
|
|
|
|
drive->special.b.set_multmode = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void pre_reset(ide_drive_t *drive)
|
|
|
|
{
|
|
|
|
if (drive->media == ide_disk)
|
|
|
|
ide_disk_pre_reset(drive);
|
|
|
|
else
|
|
|
|
drive->post_reset = 1;
|
|
|
|
|
2008-02-02 11:56:47 -07:00
|
|
|
if (drive->using_dma) {
|
|
|
|
if (drive->crc_count)
|
2008-02-02 11:56:47 -07:00
|
|
|
ide_check_dma_crc(drive);
|
2008-02-02 11:56:47 -07:00
|
|
|
else
|
|
|
|
ide_dma_off(drive);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!drive->keep_settings) {
|
|
|
|
if (!drive->using_dma) {
|
2005-04-16 16:20:36 -06:00
|
|
|
drive->unmask = 0;
|
|
|
|
drive->io_32bit = 0;
|
|
|
|
}
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (HWIF(drive)->pre_reset != NULL)
|
|
|
|
HWIF(drive)->pre_reset(drive);
|
|
|
|
|
2007-03-26 15:03:20 -06:00
|
|
|
if (drive->current_speed != 0xff)
|
|
|
|
drive->desired_speed = drive->current_speed;
|
|
|
|
drive->current_speed = 0xff;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* do_reset1() attempts to recover a confused drive by resetting it.
|
|
|
|
* Unfortunately, resetting a disk drive actually resets all devices on
|
|
|
|
* the same interface, so it can really be thought of as resetting the
|
|
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|
* interface rather than resetting the drive.
|
|
|
|
*
|
|
|
|
* ATAPI devices have their own reset mechanism which allows them to be
|
|
|
|
* individually reset without clobbering other devices on the same interface.
|
|
|
|
*
|
|
|
|
* Unfortunately, the IDE interface does not generate an interrupt to let
|
|
|
|
* us know when the reset operation has finished, so we must poll for this.
|
|
|
|
* Equally poor, though, is the fact that this may a very long time to complete,
|
|
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|
* (up to 30 seconds worstcase). So, instead of busy-waiting here for it,
|
|
|
|
* we set a timer to poll at 50ms intervals.
|
|
|
|
*/
|
|
|
|
static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
|
|
|
|
{
|
|
|
|
unsigned int unit;
|
|
|
|
unsigned long flags;
|
|
|
|
ide_hwif_t *hwif;
|
|
|
|
ide_hwgroup_t *hwgroup;
|
|
|
|
|
|
|
|
spin_lock_irqsave(&ide_lock, flags);
|
|
|
|
hwif = HWIF(drive);
|
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|
|
hwgroup = HWGROUP(drive);
|
|
|
|
|
|
|
|
/* We must not reset with running handlers */
|
2006-06-23 03:06:06 -06:00
|
|
|
BUG_ON(hwgroup->handler != NULL);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* For an ATAPI device, first try an ATAPI SRST. */
|
|
|
|
if (drive->media != ide_disk && !do_not_try_atapi) {
|
2006-10-03 02:14:33 -06:00
|
|
|
hwgroup->resetting = 1;
|
2005-04-16 16:20:36 -06:00
|
|
|
pre_reset(drive);
|
|
|
|
SELECT_DRIVE(drive);
|
|
|
|
udelay (20);
|
2005-06-27 16:24:25 -06:00
|
|
|
hwif->OUTBSYNC(drive, WIN_SRST, IDE_COMMAND_REG);
|
|
|
|
ndelay(400);
|
2005-04-16 16:20:36 -06:00
|
|
|
hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
|
|
|
|
hwgroup->polling = 1;
|
|
|
|
__ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL);
|
|
|
|
spin_unlock_irqrestore(&ide_lock, flags);
|
|
|
|
return ide_started;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* First, reset any device state data we were maintaining
|
|
|
|
* for any of the drives on this interface.
|
|
|
|
*/
|
|
|
|
for (unit = 0; unit < MAX_DRIVES; ++unit)
|
|
|
|
pre_reset(&hwif->drives[unit]);
|
|
|
|
|
|
|
|
if (!IDE_CONTROL_REG) {
|
|
|
|
spin_unlock_irqrestore(&ide_lock, flags);
|
|
|
|
return ide_stopped;
|
|
|
|
}
|
|
|
|
|
2006-10-03 02:14:33 -06:00
|
|
|
hwgroup->resetting = 1;
|
2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* Note that we also set nIEN while resetting the device,
|
|
|
|
* to mask unwanted interrupts from the interface during the reset.
|
|
|
|
* However, due to the design of PC hardware, this will cause an
|
|
|
|
* immediate interrupt due to the edge transition it produces.
|
|
|
|
* This single interrupt gives us a "fast poll" for drives that
|
|
|
|
* recover from reset very quickly, saving us the first 50ms wait time.
|
|
|
|
*/
|
|
|
|
/* set SRST and nIEN */
|
|
|
|
hwif->OUTBSYNC(drive, drive->ctl|6,IDE_CONTROL_REG);
|
|
|
|
/* more than enough time */
|
|
|
|
udelay(10);
|
|
|
|
if (drive->quirk_list == 2) {
|
|
|
|
/* clear SRST and nIEN */
|
|
|
|
hwif->OUTBSYNC(drive, drive->ctl, IDE_CONTROL_REG);
|
|
|
|
} else {
|
|
|
|
/* clear SRST, leave nIEN */
|
|
|
|
hwif->OUTBSYNC(drive, drive->ctl|2, IDE_CONTROL_REG);
|
|
|
|
}
|
|
|
|
/* more than enough time */
|
|
|
|
udelay(10);
|
|
|
|
hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
|
|
|
|
hwgroup->polling = 1;
|
|
|
|
__ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Some weird controller like resetting themselves to a strange
|
|
|
|
* state when the disks are reset this way. At least, the Winbond
|
|
|
|
* 553 documentation says that
|
|
|
|
*/
|
2008-01-25 14:17:08 -07:00
|
|
|
if (hwif->resetproc)
|
2005-04-16 16:20:36 -06:00
|
|
|
hwif->resetproc(drive);
|
|
|
|
|
|
|
|
spin_unlock_irqrestore(&ide_lock, flags);
|
|
|
|
return ide_started;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ide_do_reset() is the entry point to the drive/interface reset code.
|
|
|
|
*/
|
|
|
|
|
|
|
|
ide_startstop_t ide_do_reset (ide_drive_t *drive)
|
|
|
|
{
|
|
|
|
return do_reset1(drive, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
EXPORT_SYMBOL(ide_do_reset);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ide_wait_not_busy() waits for the currently selected device on the hwif
|
2008-02-01 15:09:36 -07:00
|
|
|
* to report a non-busy status, see comments in ide_probe_port().
|
2005-04-16 16:20:36 -06:00
|
|
|
*/
|
|
|
|
int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout)
|
|
|
|
{
|
|
|
|
u8 stat = 0;
|
|
|
|
|
|
|
|
while(timeout--) {
|
|
|
|
/*
|
|
|
|
* Turn this into a schedule() sleep once I'm sure
|
|
|
|
* about locking issues (2.5 work ?).
|
|
|
|
*/
|
|
|
|
mdelay(1);
|
|
|
|
stat = hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]);
|
|
|
|
if ((stat & BUSY_STAT) == 0)
|
|
|
|
return 0;
|
|
|
|
/*
|
|
|
|
* Assume a value of 0xff means nothing is connected to
|
|
|
|
* the interface and it doesn't implement the pull-down
|
|
|
|
* resistor on D7.
|
|
|
|
*/
|
|
|
|
if (stat == 0xff)
|
|
|
|
return -ENODEV;
|
2006-02-03 04:04:55 -07:00
|
|
|
touch_softlockup_watchdog();
|
2006-07-30 04:03:29 -06:00
|
|
|
touch_nmi_watchdog();
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
return -EBUSY;
|
|
|
|
}
|
|
|
|
|
|
|
|
EXPORT_SYMBOL_GPL(ide_wait_not_busy);
|
|
|
|
|