forked from luck/tmp_suning_uos_patched
48fb2688aa
* Factor out HDIO_[OBSOLETE,GET]_IDENTITY ioctls handling
to ide_get_identity_ioctl().
* Use temporary buffer in ide_get_identity_ioctl() instead
of accessing drive->id directly.
* Add ide_id_to_hd_driveid() inline to convert raw id into
struct hd_driveid format (needed on big-endian).
* Use ide_id_to_hd_driveid() in ide_get_identity_ioctl(),
cleanup ide_fix_driveid() and switch ide to use use raw id.
* Remove no longer needed drive->driveid.
This leaves us with 3 users of struct hd_driveid in tree:
- arch/um/drivers/ubd_kern.c
- drivers/block/xsysace.c
- drivers/usb/storage/isd200.c
While at it:
* Use ata_id_u{32,64}() and ata_id_has_{dma,lba,iordy}() macros.
There should be no functional changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
1463 lines
43 KiB
C
1463 lines
43 KiB
C
#ifndef _IDE_H
|
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#define _IDE_H
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/*
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* linux/include/linux/ide.h
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*
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* Copyright (C) 1994-2002 Linus Torvalds & authors
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*/
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#include <linux/init.h>
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#include <linux/ioport.h>
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#include <linux/hdreg.h>
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#include <linux/blkdev.h>
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#include <linux/proc_fs.h>
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#include <linux/interrupt.h>
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#include <linux/bitops.h>
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#include <linux/bio.h>
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#include <linux/device.h>
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#include <linux/pci.h>
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#include <linux/completion.h>
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#ifdef CONFIG_BLK_DEV_IDEACPI
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#include <acpi/acpi.h>
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#endif
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#include <asm/byteorder.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#include <asm/mutex.h>
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#if defined(CONFIG_CRIS) || defined(CONFIG_FRV)
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# define SUPPORT_VLB_SYNC 0
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#else
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# define SUPPORT_VLB_SYNC 1
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#endif
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/*
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* Used to indicate "no IRQ", should be a value that cannot be an IRQ
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* number.
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*/
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#define IDE_NO_IRQ (-1)
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typedef unsigned char byte; /* used everywhere */
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/*
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* Probably not wise to fiddle with these
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*/
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#define ERROR_MAX 8 /* Max read/write errors per sector */
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#define ERROR_RESET 3 /* Reset controller every 4th retry */
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#define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
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/*
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* state flags
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*/
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#define DMA_PIO_RETRY 1 /* retrying in PIO */
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#define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
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#define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
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/*
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* Definitions for accessing IDE controller registers
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*/
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#define IDE_NR_PORTS (10)
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struct ide_io_ports {
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unsigned long data_addr;
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union {
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unsigned long error_addr; /* read: error */
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unsigned long feature_addr; /* write: feature */
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};
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unsigned long nsect_addr;
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unsigned long lbal_addr;
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unsigned long lbam_addr;
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unsigned long lbah_addr;
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unsigned long device_addr;
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union {
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unsigned long status_addr; /* read: status */
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unsigned long command_addr; /* write: command */
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};
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unsigned long ctl_addr;
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unsigned long irq_addr;
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};
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#define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
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#define BAD_R_STAT (BUSY_STAT | ERR_STAT)
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#define BAD_W_STAT (BAD_R_STAT | WRERR_STAT)
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#define BAD_STAT (BAD_R_STAT | DRQ_STAT)
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#define DRIVE_READY (READY_STAT | SEEK_STAT)
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#define BAD_CRC (ABRT_ERR | ICRC_ERR)
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#define SATA_NR_PORTS (3) /* 16 possible ?? */
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#define SATA_STATUS_OFFSET (0)
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#define SATA_ERROR_OFFSET (1)
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#define SATA_CONTROL_OFFSET (2)
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/*
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* Our Physical Region Descriptor (PRD) table should be large enough
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* to handle the biggest I/O request we are likely to see. Since requests
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* can have no more than 256 sectors, and since the typical blocksize is
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* two or more sectors, we could get by with a limit of 128 entries here for
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* the usual worst case. Most requests seem to include some contiguous blocks,
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* further reducing the number of table entries required.
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*
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* The driver reverts to PIO mode for individual requests that exceed
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* this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
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* 100% of all crazy scenarios here is not necessary.
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*
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* As it turns out though, we must allocate a full 4KB page for this,
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* so the two PRD tables (ide0 & ide1) will each get half of that,
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* allowing each to have about 256 entries (8 bytes each) from this.
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*/
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#define PRD_BYTES 8
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#define PRD_ENTRIES 256
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/*
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* Some more useful definitions
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*/
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#define PARTN_BITS 6 /* number of minor dev bits for partitions */
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#define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
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#define SECTOR_SIZE 512
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#define SECTOR_WORDS (SECTOR_SIZE / 4) /* number of 32bit words per sector */
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#define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
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/*
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* Timeouts for various operations:
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*/
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#define WAIT_DRQ (HZ/10) /* 100msec - spec allows up to 20ms */
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#define WAIT_READY (5*HZ) /* 5sec - some laptops are very slow */
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#define WAIT_PIDENTIFY (10*HZ) /* 10sec - should be less than 3ms (?), if all ATAPI CD is closed at boot */
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#define WAIT_WORSTCASE (30*HZ) /* 30sec - worst case when spinning up */
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#define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */
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#define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */
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/*
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* Op codes for special requests to be handled by ide_special_rq().
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* Values should be in the range of 0x20 to 0x3f.
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*/
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#define REQ_DRIVE_RESET 0x20
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/*
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* Check for an interrupt and acknowledge the interrupt status
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*/
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struct hwif_s;
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typedef int (ide_ack_intr_t)(struct hwif_s *);
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/*
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* hwif_chipset_t is used to keep track of the specific hardware
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* chipset used by each IDE interface, if known.
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*/
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enum { ide_unknown, ide_generic, ide_pci,
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ide_cmd640, ide_dtc2278, ide_ali14xx,
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ide_qd65xx, ide_umc8672, ide_ht6560b,
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ide_rz1000, ide_trm290,
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ide_cmd646, ide_cy82c693, ide_4drives,
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ide_pmac, ide_acorn,
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ide_au1xxx, ide_palm3710
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};
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typedef u8 hwif_chipset_t;
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/*
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* Structure to hold all information about the location of this port
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*/
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typedef struct hw_regs_s {
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union {
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struct ide_io_ports io_ports;
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unsigned long io_ports_array[IDE_NR_PORTS];
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};
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int irq; /* our irq number */
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ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
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hwif_chipset_t chipset;
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struct device *dev, *parent;
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unsigned long config;
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} hw_regs_t;
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void ide_init_port_data(struct hwif_s *, unsigned int);
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void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
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static inline void ide_std_init_ports(hw_regs_t *hw,
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unsigned long io_addr,
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unsigned long ctl_addr)
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{
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unsigned int i;
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for (i = 0; i <= 7; i++)
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hw->io_ports_array[i] = io_addr++;
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hw->io_ports.ctl_addr = ctl_addr;
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}
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/* for IDE PCI controllers in legacy mode, temporary */
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static inline int __ide_default_irq(unsigned long base)
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{
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switch (base) {
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#ifdef CONFIG_IA64
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case 0x1f0: return isa_irq_to_vector(14);
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case 0x170: return isa_irq_to_vector(15);
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#else
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case 0x1f0: return 14;
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case 0x170: return 15;
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#endif
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}
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return 0;
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}
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#if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \
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defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \
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|| defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64)
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#include <asm/ide.h>
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#else
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#include <asm-generic/ide_iops.h>
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#endif
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#define MAX_HWIFS 10
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/* Currently only m68k, apus and m8xx need it */
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#ifndef IDE_ARCH_ACK_INTR
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# define ide_ack_intr(hwif) (1)
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#endif
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/* Currently only Atari needs it */
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#ifndef IDE_ARCH_LOCK
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# define ide_release_lock() do {} while (0)
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# define ide_get_lock(hdlr, data) do {} while (0)
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#endif /* IDE_ARCH_LOCK */
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/*
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* Now for the data we need to maintain per-drive: ide_drive_t
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*/
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#define ide_scsi 0x21
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#define ide_disk 0x20
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#define ide_optical 0x7
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#define ide_cdrom 0x5
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#define ide_tape 0x1
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#define ide_floppy 0x0
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/*
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* Special Driver Flags
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*
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* set_geometry : respecify drive geometry
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* recalibrate : seek to cyl 0
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* set_multmode : set multmode count
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* set_tune : tune interface for drive
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* serviced : service command
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* reserved : unused
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*/
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typedef union {
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unsigned all : 8;
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struct {
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unsigned set_geometry : 1;
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unsigned recalibrate : 1;
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unsigned set_multmode : 1;
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unsigned set_tune : 1;
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unsigned serviced : 1;
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unsigned reserved : 3;
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} b;
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} special_t;
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/*
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* ATA-IDE Select Register, aka Device-Head
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*
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* head : always zeros here
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* unit : drive select number: 0/1
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* bit5 : always 1
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* lba : using LBA instead of CHS
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* bit7 : always 1
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*/
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typedef union {
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unsigned all : 8;
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struct {
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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unsigned head : 4;
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unsigned unit : 1;
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unsigned bit5 : 1;
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unsigned lba : 1;
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unsigned bit7 : 1;
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#elif defined(__BIG_ENDIAN_BITFIELD)
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unsigned bit7 : 1;
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unsigned lba : 1;
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unsigned bit5 : 1;
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unsigned unit : 1;
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unsigned head : 4;
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#else
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#error "Please fix <asm/byteorder.h>"
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#endif
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} b;
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} select_t, ata_select_t;
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/*
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* Status returned from various ide_ functions
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*/
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typedef enum {
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ide_stopped, /* no drive operation was started */
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ide_started, /* a drive operation was started, handler was set */
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} ide_startstop_t;
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struct ide_driver_s;
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struct ide_settings_s;
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#ifdef CONFIG_BLK_DEV_IDEACPI
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struct ide_acpi_drive_link;
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struct ide_acpi_hwif_link;
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#endif
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/* ATAPI device flags */
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enum {
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IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
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IDE_AFLAG_MEDIA_CHANGED = (1 << 1),
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/* ide-cd */
|
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/* Drive cannot lock the door. */
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IDE_AFLAG_NO_DOORLOCK = (1 << 2),
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/* Drive cannot eject the disc. */
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IDE_AFLAG_NO_EJECT = (1 << 3),
|
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/* Drive is a pre ATAPI 1.2 drive. */
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IDE_AFLAG_PRE_ATAPI12 = (1 << 4),
|
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/* TOC addresses are in BCD. */
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IDE_AFLAG_TOCADDR_AS_BCD = (1 << 5),
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/* TOC track numbers are in BCD. */
|
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IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 6),
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/*
|
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* Drive does not provide data in multiples of SECTOR_SIZE
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* when more than one interrupt is needed.
|
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*/
|
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IDE_AFLAG_LIMIT_NFRAMES = (1 << 7),
|
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/* Seeking in progress. */
|
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IDE_AFLAG_SEEKING = (1 << 8),
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/* Saved TOC information is current. */
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IDE_AFLAG_TOC_VALID = (1 << 9),
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/* We think that the drive door is locked. */
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IDE_AFLAG_DOOR_LOCKED = (1 << 10),
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/* SET_CD_SPEED command is unsupported. */
|
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IDE_AFLAG_NO_SPEED_SELECT = (1 << 11),
|
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IDE_AFLAG_VERTOS_300_SSD = (1 << 12),
|
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IDE_AFLAG_VERTOS_600_ESD = (1 << 13),
|
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IDE_AFLAG_SANYO_3CD = (1 << 14),
|
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IDE_AFLAG_FULL_CAPS_PAGE = (1 << 15),
|
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IDE_AFLAG_PLAY_AUDIO_OK = (1 << 16),
|
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IDE_AFLAG_LE_SPEED_FIELDS = (1 << 17),
|
||
|
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/* ide-floppy */
|
||
/* Format in progress */
|
||
IDE_AFLAG_FORMAT_IN_PROGRESS = (1 << 18),
|
||
/* Avoid commands not supported in Clik drive */
|
||
IDE_AFLAG_CLIK_DRIVE = (1 << 19),
|
||
/* Requires BH algorithm for packets */
|
||
IDE_AFLAG_ZIP_DRIVE = (1 << 20),
|
||
|
||
/* ide-tape */
|
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IDE_AFLAG_IGNORE_DSC = (1 << 21),
|
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/* 0 When the tape position is unknown */
|
||
IDE_AFLAG_ADDRESS_VALID = (1 << 22),
|
||
/* Device already opened */
|
||
IDE_AFLAG_BUSY = (1 << 23),
|
||
/* Attempt to auto-detect the current user block size */
|
||
IDE_AFLAG_DETECT_BS = (1 << 24),
|
||
/* Currently on a filemark */
|
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IDE_AFLAG_FILEMARK = (1 << 25),
|
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/* 0 = no tape is loaded, so we don't rewind after ejecting */
|
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IDE_AFLAG_MEDIUM_PRESENT = (1 << 26),
|
||
|
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IDE_AFLAG_NO_AUTOCLOSE = (1 << 27),
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};
|
||
|
||
struct ide_drive_s {
|
||
char name[4]; /* drive name, such as "hda" */
|
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char driver_req[10]; /* requests specific driver */
|
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|
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struct request_queue *queue; /* request queue */
|
||
|
||
struct request *rq; /* current request */
|
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struct ide_drive_s *next; /* circular list of hwgroup drives */
|
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void *driver_data; /* extra driver data */
|
||
u16 *id; /* identification info */
|
||
#ifdef CONFIG_IDE_PROC_FS
|
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struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
|
||
struct ide_settings_s *settings;/* /proc/ide/ drive settings */
|
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#endif
|
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struct hwif_s *hwif; /* actually (ide_hwif_t *) */
|
||
|
||
unsigned long sleep; /* sleep until this time */
|
||
unsigned long service_start; /* time we started last request */
|
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unsigned long service_time; /* service time of last request */
|
||
unsigned long timeout; /* max time to wait for irq */
|
||
|
||
special_t special; /* special action flags */
|
||
select_t select; /* basic drive/head select reg value */
|
||
|
||
u8 keep_settings; /* restore settings after drive reset */
|
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u8 using_dma; /* disk is using dma for read/write */
|
||
u8 retry_pio; /* retrying dma capable host in pio */
|
||
u8 state; /* retry state */
|
||
u8 waiting_for_dma; /* dma currently in progress */
|
||
u8 unmask; /* okay to unmask other irqs */
|
||
u8 noflush; /* don't attempt flushes */
|
||
u8 dsc_overlap; /* DSC overlap */
|
||
u8 nice1; /* give potential excess bandwidth */
|
||
|
||
unsigned present : 1; /* drive is physically present */
|
||
unsigned dead : 1; /* device ejected hint */
|
||
unsigned id_read : 1; /* 1=id read from disk 0 = synthetic */
|
||
unsigned noprobe : 1; /* from: hdx=noprobe */
|
||
unsigned removable : 1; /* 1 if need to do check_media_change */
|
||
unsigned attach : 1; /* needed for removable devices */
|
||
unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */
|
||
unsigned no_unmask : 1; /* disallow setting unmask bit */
|
||
unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
|
||
unsigned atapi_overlap : 1; /* ATAPI overlap (not supported) */
|
||
unsigned doorlocking : 1; /* for removable only: door lock/unlock works */
|
||
unsigned nodma : 1; /* disallow DMA */
|
||
unsigned remap_0_to_1 : 1; /* 0=noremap, 1=remap 0->1 (for EZDrive) */
|
||
unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
|
||
unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */
|
||
unsigned sleeping : 1; /* 1=sleeping & sleep field valid */
|
||
unsigned post_reset : 1;
|
||
unsigned udma33_warned : 1;
|
||
|
||
u8 addressing; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
|
||
u8 quirk_list; /* considered quirky, set for a specific host */
|
||
u8 init_speed; /* transfer rate set at boot */
|
||
u8 current_speed; /* current transfer rate set */
|
||
u8 desired_speed; /* desired transfer rate set */
|
||
u8 dn; /* now wide spread use */
|
||
u8 wcache; /* status of write cache */
|
||
u8 acoustic; /* acoustic management */
|
||
u8 media; /* disk, cdrom, tape, floppy, ... */
|
||
u8 ready_stat; /* min status value for drive ready */
|
||
u8 mult_count; /* current multiple sector setting */
|
||
u8 mult_req; /* requested multiple sector setting */
|
||
u8 tune_req; /* requested drive tuning setting */
|
||
u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
|
||
u8 bad_wstat; /* used for ignoring WRERR_STAT */
|
||
u8 nowerr; /* used for ignoring WRERR_STAT */
|
||
u8 sect0; /* offset of first sector for DM6:DDO */
|
||
u8 head; /* "real" number of heads */
|
||
u8 sect; /* "real" sectors per track */
|
||
u8 bios_head; /* BIOS/fdisk/LILO number of heads */
|
||
u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
|
||
|
||
unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
|
||
unsigned int cyl; /* "real" number of cyls */
|
||
unsigned int drive_data; /* used by set_pio_mode/selectproc */
|
||
unsigned int failures; /* current failure count */
|
||
unsigned int max_failures; /* maximum allowed failure count */
|
||
u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
|
||
|
||
u64 capacity64; /* total number of sectors */
|
||
|
||
int lun; /* logical unit */
|
||
int crc_count; /* crc counter to reduce drive speed */
|
||
#ifdef CONFIG_BLK_DEV_IDEACPI
|
||
struct ide_acpi_drive_link *acpidata;
|
||
#endif
|
||
struct list_head list;
|
||
struct device gendev;
|
||
struct completion gendev_rel_comp; /* to deal with device release() */
|
||
|
||
/* callback for packet commands */
|
||
void (*pc_callback)(struct ide_drive_s *);
|
||
|
||
unsigned long atapi_flags;
|
||
};
|
||
|
||
typedef struct ide_drive_s ide_drive_t;
|
||
|
||
#define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
|
||
|
||
#define IDE_CHIPSET_PCI_MASK \
|
||
((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx))
|
||
#define IDE_CHIPSET_IS_PCI(c) ((IDE_CHIPSET_PCI_MASK >> (c)) & 1)
|
||
|
||
struct ide_task_s;
|
||
struct ide_port_info;
|
||
|
||
struct ide_tp_ops {
|
||
void (*exec_command)(struct hwif_s *, u8);
|
||
u8 (*read_status)(struct hwif_s *);
|
||
u8 (*read_altstatus)(struct hwif_s *);
|
||
u8 (*read_sff_dma_status)(struct hwif_s *);
|
||
|
||
void (*set_irq)(struct hwif_s *, int);
|
||
|
||
void (*tf_load)(ide_drive_t *, struct ide_task_s *);
|
||
void (*tf_read)(ide_drive_t *, struct ide_task_s *);
|
||
|
||
void (*input_data)(ide_drive_t *, struct request *, void *,
|
||
unsigned int);
|
||
void (*output_data)(ide_drive_t *, struct request *, void *,
|
||
unsigned int);
|
||
};
|
||
|
||
extern const struct ide_tp_ops default_tp_ops;
|
||
|
||
/**
|
||
* struct ide_port_ops - IDE port operations
|
||
*
|
||
* @init_dev: host specific initialization of a device
|
||
* @set_pio_mode: routine to program host for PIO mode
|
||
* @set_dma_mode: routine to program host for DMA mode
|
||
* @selectproc: tweaks hardware to select drive
|
||
* @reset_poll: chipset polling based on hba specifics
|
||
* @pre_reset: chipset specific changes to default for device-hba resets
|
||
* @resetproc: routine to reset controller after a disk reset
|
||
* @maskproc: special host masking for drive selection
|
||
* @quirkproc: check host's drive quirk list
|
||
*
|
||
* @mdma_filter: filter MDMA modes
|
||
* @udma_filter: filter UDMA modes
|
||
*
|
||
* @cable_detect: detect cable type
|
||
*/
|
||
struct ide_port_ops {
|
||
void (*init_dev)(ide_drive_t *);
|
||
void (*set_pio_mode)(ide_drive_t *, const u8);
|
||
void (*set_dma_mode)(ide_drive_t *, const u8);
|
||
void (*selectproc)(ide_drive_t *);
|
||
int (*reset_poll)(ide_drive_t *);
|
||
void (*pre_reset)(ide_drive_t *);
|
||
void (*resetproc)(ide_drive_t *);
|
||
void (*maskproc)(ide_drive_t *, int);
|
||
void (*quirkproc)(ide_drive_t *);
|
||
|
||
u8 (*mdma_filter)(ide_drive_t *);
|
||
u8 (*udma_filter)(ide_drive_t *);
|
||
|
||
u8 (*cable_detect)(struct hwif_s *);
|
||
};
|
||
|
||
struct ide_dma_ops {
|
||
void (*dma_host_set)(struct ide_drive_s *, int);
|
||
int (*dma_setup)(struct ide_drive_s *);
|
||
void (*dma_exec_cmd)(struct ide_drive_s *, u8);
|
||
void (*dma_start)(struct ide_drive_s *);
|
||
int (*dma_end)(struct ide_drive_s *);
|
||
int (*dma_test_irq)(struct ide_drive_s *);
|
||
void (*dma_lost_irq)(struct ide_drive_s *);
|
||
void (*dma_timeout)(struct ide_drive_s *);
|
||
};
|
||
|
||
struct ide_host;
|
||
|
||
typedef struct hwif_s {
|
||
struct hwif_s *next; /* for linked-list in ide_hwgroup_t */
|
||
struct hwif_s *mate; /* other hwif from same PCI chip */
|
||
struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */
|
||
struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
|
||
|
||
struct ide_host *host;
|
||
|
||
char name[6]; /* name of interface, eg. "ide0" */
|
||
|
||
struct ide_io_ports io_ports;
|
||
|
||
unsigned long sata_scr[SATA_NR_PORTS];
|
||
|
||
ide_drive_t drives[MAX_DRIVES]; /* drive info */
|
||
|
||
u8 major; /* our major number */
|
||
u8 index; /* 0 for ide0; 1 for ide1; ... */
|
||
u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
|
||
u8 bus_state; /* power state of the IDE bus */
|
||
|
||
u32 host_flags;
|
||
|
||
u8 pio_mask;
|
||
|
||
u8 ultra_mask;
|
||
u8 mwdma_mask;
|
||
u8 swdma_mask;
|
||
|
||
u8 cbl; /* cable type */
|
||
|
||
hwif_chipset_t chipset; /* sub-module for tuning.. */
|
||
|
||
struct device *dev;
|
||
|
||
ide_ack_intr_t *ack_intr;
|
||
|
||
void (*rw_disk)(ide_drive_t *, struct request *);
|
||
|
||
const struct ide_tp_ops *tp_ops;
|
||
const struct ide_port_ops *port_ops;
|
||
const struct ide_dma_ops *dma_ops;
|
||
|
||
void (*ide_dma_clear_irq)(ide_drive_t *drive);
|
||
|
||
/* dma physical region descriptor table (cpu view) */
|
||
unsigned int *dmatable_cpu;
|
||
/* dma physical region descriptor table (dma view) */
|
||
dma_addr_t dmatable_dma;
|
||
/* Scatter-gather list used to build the above */
|
||
struct scatterlist *sg_table;
|
||
int sg_max_nents; /* Maximum number of entries in it */
|
||
int sg_nents; /* Current number of entries in it */
|
||
int sg_dma_direction; /* dma transfer direction */
|
||
|
||
/* data phase of the active command (currently only valid for PIO/DMA) */
|
||
int data_phase;
|
||
|
||
unsigned int nsect;
|
||
unsigned int nleft;
|
||
struct scatterlist *cursg;
|
||
unsigned int cursg_ofs;
|
||
|
||
int rqsize; /* max sectors per request */
|
||
int irq; /* our irq number */
|
||
|
||
unsigned long dma_base; /* base addr for dma ports */
|
||
|
||
unsigned long config_data; /* for use by chipset-specific code */
|
||
unsigned long select_data; /* for use by chipset-specific code */
|
||
|
||
unsigned long extra_base; /* extra addr for dma ports */
|
||
unsigned extra_ports; /* number of extra dma ports */
|
||
|
||
unsigned present : 1; /* this interface exists */
|
||
unsigned serialized : 1; /* serialized all channel operation */
|
||
unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
|
||
unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
|
||
|
||
struct device gendev;
|
||
struct device *portdev;
|
||
|
||
struct completion gendev_rel_comp; /* To deal with device release() */
|
||
|
||
void *hwif_data; /* extra hwif data */
|
||
|
||
unsigned dma;
|
||
|
||
#ifdef CONFIG_BLK_DEV_IDEACPI
|
||
struct ide_acpi_hwif_link *acpidata;
|
||
#endif
|
||
} ____cacheline_internodealigned_in_smp ide_hwif_t;
|
||
|
||
struct ide_host {
|
||
ide_hwif_t *ports[MAX_HWIFS];
|
||
unsigned int n_ports;
|
||
struct device *dev[2];
|
||
unsigned long host_flags;
|
||
void *host_priv;
|
||
};
|
||
|
||
/*
|
||
* internal ide interrupt handler type
|
||
*/
|
||
typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
|
||
typedef int (ide_expiry_t)(ide_drive_t *);
|
||
|
||
/* used by ide-cd, ide-floppy, etc. */
|
||
typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned);
|
||
|
||
typedef struct hwgroup_s {
|
||
/* irq handler, if active */
|
||
ide_startstop_t (*handler)(ide_drive_t *);
|
||
|
||
/* BOOL: protects all fields below */
|
||
volatile int busy;
|
||
/* BOOL: wake us up on timer expiry */
|
||
unsigned int sleeping : 1;
|
||
/* BOOL: polling active & poll_timeout field valid */
|
||
unsigned int polling : 1;
|
||
|
||
/* current drive */
|
||
ide_drive_t *drive;
|
||
/* ptr to current hwif in linked-list */
|
||
ide_hwif_t *hwif;
|
||
|
||
/* current request */
|
||
struct request *rq;
|
||
|
||
/* failsafe timer */
|
||
struct timer_list timer;
|
||
/* timeout value during long polls */
|
||
unsigned long poll_timeout;
|
||
/* queried upon timeouts */
|
||
int (*expiry)(ide_drive_t *);
|
||
|
||
int req_gen;
|
||
int req_gen_timer;
|
||
} ide_hwgroup_t;
|
||
|
||
typedef struct ide_driver_s ide_driver_t;
|
||
|
||
extern struct mutex ide_setting_mtx;
|
||
|
||
int set_io_32bit(ide_drive_t *, int);
|
||
int set_pio_mode(ide_drive_t *, int);
|
||
int set_using_dma(ide_drive_t *, int);
|
||
|
||
/* ATAPI packet command flags */
|
||
enum {
|
||
/* set when an error is considered normal - no retry (ide-tape) */
|
||
PC_FLAG_ABORT = (1 << 0),
|
||
PC_FLAG_SUPPRESS_ERROR = (1 << 1),
|
||
PC_FLAG_WAIT_FOR_DSC = (1 << 2),
|
||
PC_FLAG_DMA_OK = (1 << 3),
|
||
PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
|
||
PC_FLAG_DMA_ERROR = (1 << 5),
|
||
PC_FLAG_WRITING = (1 << 6),
|
||
/* command timed out */
|
||
PC_FLAG_TIMEDOUT = (1 << 7),
|
||
};
|
||
|
||
struct ide_atapi_pc {
|
||
/* actual packet bytes */
|
||
u8 c[12];
|
||
/* incremented on each retry */
|
||
int retries;
|
||
int error;
|
||
|
||
/* bytes to transfer */
|
||
int req_xfer;
|
||
/* bytes actually transferred */
|
||
int xferred;
|
||
|
||
/* data buffer */
|
||
u8 *buf;
|
||
/* current buffer position */
|
||
u8 *cur_pos;
|
||
int buf_size;
|
||
/* missing/available data on the current buffer */
|
||
int b_count;
|
||
|
||
/* the corresponding request */
|
||
struct request *rq;
|
||
|
||
unsigned long flags;
|
||
|
||
/*
|
||
* those are more or less driver-specific and some of them are subject
|
||
* to change/removal later.
|
||
*/
|
||
u8 pc_buf[256];
|
||
|
||
/* idetape only */
|
||
struct idetape_bh *bh;
|
||
char *b_data;
|
||
|
||
/* idescsi only for now */
|
||
struct scatterlist *sg;
|
||
unsigned int sg_cnt;
|
||
|
||
struct scsi_cmnd *scsi_cmd;
|
||
void (*done) (struct scsi_cmnd *);
|
||
|
||
unsigned long timeout;
|
||
};
|
||
|
||
#ifdef CONFIG_IDE_PROC_FS
|
||
/*
|
||
* configurable drive settings
|
||
*/
|
||
|
||
#define TYPE_INT 0
|
||
#define TYPE_BYTE 1
|
||
#define TYPE_SHORT 2
|
||
|
||
#define SETTING_READ (1 << 0)
|
||
#define SETTING_WRITE (1 << 1)
|
||
#define SETTING_RW (SETTING_READ | SETTING_WRITE)
|
||
|
||
typedef int (ide_procset_t)(ide_drive_t *, int);
|
||
typedef struct ide_settings_s {
|
||
char *name;
|
||
int rw;
|
||
int data_type;
|
||
int min;
|
||
int max;
|
||
int mul_factor;
|
||
int div_factor;
|
||
void *data;
|
||
ide_procset_t *set;
|
||
int auto_remove;
|
||
struct ide_settings_s *next;
|
||
} ide_settings_t;
|
||
|
||
int ide_add_setting(ide_drive_t *, const char *, int, int, int, int, int, int, void *, ide_procset_t *set);
|
||
|
||
/*
|
||
* /proc/ide interface
|
||
*/
|
||
typedef struct {
|
||
const char *name;
|
||
mode_t mode;
|
||
read_proc_t *read_proc;
|
||
write_proc_t *write_proc;
|
||
} ide_proc_entry_t;
|
||
|
||
void proc_ide_create(void);
|
||
void proc_ide_destroy(void);
|
||
void ide_proc_register_port(ide_hwif_t *);
|
||
void ide_proc_port_register_devices(ide_hwif_t *);
|
||
void ide_proc_unregister_device(ide_drive_t *);
|
||
void ide_proc_unregister_port(ide_hwif_t *);
|
||
void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
|
||
void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
|
||
|
||
void ide_add_generic_settings(ide_drive_t *);
|
||
|
||
read_proc_t proc_ide_read_capacity;
|
||
read_proc_t proc_ide_read_geometry;
|
||
|
||
/*
|
||
* Standard exit stuff:
|
||
*/
|
||
#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
|
||
{ \
|
||
len -= off; \
|
||
if (len < count) { \
|
||
*eof = 1; \
|
||
if (len <= 0) \
|
||
return 0; \
|
||
} else \
|
||
len = count; \
|
||
*start = page + off; \
|
||
return len; \
|
||
}
|
||
#else
|
||
static inline void proc_ide_create(void) { ; }
|
||
static inline void proc_ide_destroy(void) { ; }
|
||
static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
|
||
static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
|
||
static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
|
||
static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
|
||
static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
|
||
static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
|
||
static inline void ide_add_generic_settings(ide_drive_t *drive) { ; }
|
||
#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
|
||
#endif
|
||
|
||
/*
|
||
* Power Management step value (rq->pm->pm_step).
|
||
*
|
||
* The step value starts at 0 (ide_pm_state_start_suspend) for a
|
||
* suspend operation or 1000 (ide_pm_state_start_resume) for a
|
||
* resume operation.
|
||
*
|
||
* For each step, the core calls the subdriver start_power_step() first.
|
||
* This can return:
|
||
* - ide_stopped : In this case, the core calls us back again unless
|
||
* step have been set to ide_power_state_completed.
|
||
* - ide_started : In this case, the channel is left busy until an
|
||
* async event (interrupt) occurs.
|
||
* Typically, start_power_step() will issue a taskfile request with
|
||
* do_rw_taskfile().
|
||
*
|
||
* Upon reception of the interrupt, the core will call complete_power_step()
|
||
* with the error code if any. This routine should update the step value
|
||
* and return. It should not start a new request. The core will call
|
||
* start_power_step for the new step value, unless step have been set to
|
||
* ide_power_state_completed.
|
||
*
|
||
* Subdrivers are expected to define their own additional power
|
||
* steps from 1..999 for suspend and from 1001..1999 for resume,
|
||
* other values are reserved for future use.
|
||
*/
|
||
|
||
enum {
|
||
ide_pm_state_completed = -1,
|
||
ide_pm_state_start_suspend = 0,
|
||
ide_pm_state_start_resume = 1000,
|
||
};
|
||
|
||
/*
|
||
* Subdrivers support.
|
||
*
|
||
* The gendriver.owner field should be set to the module owner of this driver.
|
||
* The gendriver.name field should be set to the name of this driver
|
||
*/
|
||
struct ide_driver_s {
|
||
const char *version;
|
||
u8 media;
|
||
unsigned supports_dsc_overlap : 1;
|
||
ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
|
||
int (*end_request)(ide_drive_t *, int, int);
|
||
ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
|
||
struct device_driver gen_driver;
|
||
int (*probe)(ide_drive_t *);
|
||
void (*remove)(ide_drive_t *);
|
||
void (*resume)(ide_drive_t *);
|
||
void (*shutdown)(ide_drive_t *);
|
||
#ifdef CONFIG_IDE_PROC_FS
|
||
ide_proc_entry_t *proc;
|
||
#endif
|
||
};
|
||
|
||
#define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
|
||
|
||
int ide_device_get(ide_drive_t *);
|
||
void ide_device_put(ide_drive_t *);
|
||
|
||
int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *, unsigned, unsigned long);
|
||
|
||
extern int ide_vlb_clk;
|
||
extern int ide_pci_clk;
|
||
|
||
extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
|
||
int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
|
||
int uptodate, int nr_sectors);
|
||
|
||
extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
|
||
|
||
void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
|
||
ide_expiry_t *);
|
||
|
||
void ide_execute_pkt_cmd(ide_drive_t *);
|
||
|
||
void ide_pad_transfer(ide_drive_t *, int, int);
|
||
|
||
ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
|
||
|
||
ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
|
||
|
||
void ide_fix_driveid(u16 *);
|
||
|
||
extern void ide_fixstring(u8 *, const int, const int);
|
||
|
||
int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
|
||
|
||
extern ide_startstop_t ide_do_reset (ide_drive_t *);
|
||
|
||
extern void ide_do_drive_cmd(ide_drive_t *, struct request *);
|
||
|
||
extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
|
||
|
||
enum {
|
||
IDE_TFLAG_LBA48 = (1 << 0),
|
||
IDE_TFLAG_FLAGGED = (1 << 2),
|
||
IDE_TFLAG_OUT_DATA = (1 << 3),
|
||
IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
|
||
IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
|
||
IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
|
||
IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
|
||
IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
|
||
IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
|
||
IDE_TFLAG_OUT_HOB_NSECT |
|
||
IDE_TFLAG_OUT_HOB_LBAL |
|
||
IDE_TFLAG_OUT_HOB_LBAM |
|
||
IDE_TFLAG_OUT_HOB_LBAH,
|
||
IDE_TFLAG_OUT_FEATURE = (1 << 9),
|
||
IDE_TFLAG_OUT_NSECT = (1 << 10),
|
||
IDE_TFLAG_OUT_LBAL = (1 << 11),
|
||
IDE_TFLAG_OUT_LBAM = (1 << 12),
|
||
IDE_TFLAG_OUT_LBAH = (1 << 13),
|
||
IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
|
||
IDE_TFLAG_OUT_NSECT |
|
||
IDE_TFLAG_OUT_LBAL |
|
||
IDE_TFLAG_OUT_LBAM |
|
||
IDE_TFLAG_OUT_LBAH,
|
||
IDE_TFLAG_OUT_DEVICE = (1 << 14),
|
||
IDE_TFLAG_WRITE = (1 << 15),
|
||
IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
|
||
IDE_TFLAG_IN_DATA = (1 << 17),
|
||
IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
|
||
IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
|
||
IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
|
||
IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
|
||
IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
|
||
IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
|
||
IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
|
||
IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
|
||
IDE_TFLAG_IN_HOB_LBAM |
|
||
IDE_TFLAG_IN_HOB_LBAH,
|
||
IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
|
||
IDE_TFLAG_IN_HOB_NSECT |
|
||
IDE_TFLAG_IN_HOB_LBA,
|
||
IDE_TFLAG_IN_FEATURE = (1 << 1),
|
||
IDE_TFLAG_IN_NSECT = (1 << 25),
|
||
IDE_TFLAG_IN_LBAL = (1 << 26),
|
||
IDE_TFLAG_IN_LBAM = (1 << 27),
|
||
IDE_TFLAG_IN_LBAH = (1 << 28),
|
||
IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
|
||
IDE_TFLAG_IN_LBAM |
|
||
IDE_TFLAG_IN_LBAH,
|
||
IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
|
||
IDE_TFLAG_IN_LBA,
|
||
IDE_TFLAG_IN_DEVICE = (1 << 29),
|
||
IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
|
||
IDE_TFLAG_IN_HOB,
|
||
IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
|
||
IDE_TFLAG_IN_TF,
|
||
IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
|
||
IDE_TFLAG_IN_DEVICE,
|
||
/* force 16-bit I/O operations */
|
||
IDE_TFLAG_IO_16BIT = (1 << 30),
|
||
/* ide_task_t was allocated using kmalloc() */
|
||
IDE_TFLAG_DYN = (1 << 31),
|
||
};
|
||
|
||
struct ide_taskfile {
|
||
u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
|
||
|
||
u8 hob_feature; /* 1-5: additional data to support LBA48 */
|
||
u8 hob_nsect;
|
||
u8 hob_lbal;
|
||
u8 hob_lbam;
|
||
u8 hob_lbah;
|
||
|
||
u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
|
||
|
||
union { /* 7: */
|
||
u8 error; /* read: error */
|
||
u8 feature; /* write: feature */
|
||
};
|
||
|
||
u8 nsect; /* 8: number of sectors */
|
||
u8 lbal; /* 9: LBA low */
|
||
u8 lbam; /* 10: LBA mid */
|
||
u8 lbah; /* 11: LBA high */
|
||
|
||
u8 device; /* 12: device select */
|
||
|
||
union { /* 13: */
|
||
u8 status; /* read: status */
|
||
u8 command; /* write: command */
|
||
};
|
||
};
|
||
|
||
typedef struct ide_task_s {
|
||
union {
|
||
struct ide_taskfile tf;
|
||
u8 tf_array[14];
|
||
};
|
||
u32 tf_flags;
|
||
int data_phase;
|
||
struct request *rq; /* copy of request */
|
||
void *special; /* valid_t generally */
|
||
} ide_task_t;
|
||
|
||
void ide_tf_dump(const char *, struct ide_taskfile *);
|
||
|
||
void ide_exec_command(ide_hwif_t *, u8);
|
||
u8 ide_read_status(ide_hwif_t *);
|
||
u8 ide_read_altstatus(ide_hwif_t *);
|
||
u8 ide_read_sff_dma_status(ide_hwif_t *);
|
||
|
||
void ide_set_irq(ide_hwif_t *, int);
|
||
|
||
void ide_tf_load(ide_drive_t *, ide_task_t *);
|
||
void ide_tf_read(ide_drive_t *, ide_task_t *);
|
||
|
||
void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
|
||
void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
|
||
|
||
extern void SELECT_DRIVE(ide_drive_t *);
|
||
void SELECT_MASK(ide_drive_t *, int);
|
||
|
||
u8 ide_read_error(ide_drive_t *);
|
||
void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
|
||
|
||
extern int drive_is_ready(ide_drive_t *);
|
||
|
||
void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
|
||
|
||
ide_startstop_t ide_pc_intr(ide_drive_t *drive, struct ide_atapi_pc *pc,
|
||
ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry,
|
||
void (*update_buffers)(ide_drive_t *, struct ide_atapi_pc *),
|
||
void (*retry_pc)(ide_drive_t *), void (*dsc_handle)(ide_drive_t *),
|
||
void (*io_buffers)(ide_drive_t *, struct ide_atapi_pc *, unsigned int,
|
||
int));
|
||
ide_startstop_t ide_transfer_pc(ide_drive_t *, struct ide_atapi_pc *,
|
||
ide_handler_t *, unsigned int, ide_expiry_t *);
|
||
ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_atapi_pc *,
|
||
ide_handler_t *, unsigned int, ide_expiry_t *);
|
||
|
||
ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
|
||
|
||
void task_end_request(ide_drive_t *, struct request *, u8);
|
||
|
||
int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
|
||
int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
|
||
|
||
int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
|
||
int ide_cmd_ioctl(ide_drive_t *, unsigned int, unsigned long);
|
||
int ide_task_ioctl(ide_drive_t *, unsigned int, unsigned long);
|
||
|
||
extern int ide_driveid_update(ide_drive_t *);
|
||
extern int ide_config_drive_speed(ide_drive_t *, u8);
|
||
extern u8 eighty_ninty_three (ide_drive_t *);
|
||
extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
|
||
|
||
extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
|
||
|
||
extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
|
||
|
||
extern int ide_spin_wait_hwgroup(ide_drive_t *);
|
||
extern void ide_timer_expiry(unsigned long);
|
||
extern irqreturn_t ide_intr(int irq, void *dev_id);
|
||
extern void do_ide_request(struct request_queue *);
|
||
|
||
void ide_init_disk(struct gendisk *, ide_drive_t *);
|
||
|
||
#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
|
||
extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
|
||
#define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
|
||
#else
|
||
#define ide_pci_register_driver(d) pci_register_driver(d)
|
||
#endif
|
||
|
||
void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int,
|
||
hw_regs_t *, hw_regs_t **);
|
||
void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
|
||
|
||
#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
|
||
int ide_pci_set_master(struct pci_dev *, const char *);
|
||
unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
|
||
int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
|
||
int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
|
||
#else
|
||
static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
|
||
const struct ide_port_info *d)
|
||
{
|
||
return -EINVAL;
|
||
}
|
||
#endif
|
||
|
||
typedef struct ide_pci_enablebit_s {
|
||
u8 reg; /* byte pci reg holding the enable-bit */
|
||
u8 mask; /* mask to isolate the enable-bit */
|
||
u8 val; /* value of masked reg when "enabled" */
|
||
} ide_pci_enablebit_t;
|
||
|
||
enum {
|
||
/* Uses ISA control ports not PCI ones. */
|
||
IDE_HFLAG_ISA_PORTS = (1 << 0),
|
||
/* single port device */
|
||
IDE_HFLAG_SINGLE = (1 << 1),
|
||
/* don't use legacy PIO blacklist */
|
||
IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
|
||
/* set for the second port of QD65xx */
|
||
IDE_HFLAG_QD_2ND_PORT = (1 << 3),
|
||
/* use PIO8/9 for prefetch off/on */
|
||
IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
|
||
/* use PIO6/7 for fast-devsel off/on */
|
||
IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
|
||
/* use 100-102 and 200-202 PIO values to set DMA modes */
|
||
IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
|
||
/*
|
||
* keep DMA setting when programming PIO mode, may be used only
|
||
* for hosts which have separate PIO and DMA timings (ie. PMAC)
|
||
*/
|
||
IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
|
||
/* program host for the transfer mode after programming device */
|
||
IDE_HFLAG_POST_SET_MODE = (1 << 8),
|
||
/* don't program host/device for the transfer mode ("smart" hosts) */
|
||
IDE_HFLAG_NO_SET_MODE = (1 << 9),
|
||
/* trust BIOS for programming chipset/device for DMA */
|
||
IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
|
||
/* host is CS5510/CS5520 */
|
||
IDE_HFLAG_CS5520 = (1 << 11),
|
||
/* ATAPI DMA is unsupported */
|
||
IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
|
||
/* set if host is a "non-bootable" controller */
|
||
IDE_HFLAG_NON_BOOTABLE = (1 << 13),
|
||
/* host doesn't support DMA */
|
||
IDE_HFLAG_NO_DMA = (1 << 14),
|
||
/* check if host is PCI IDE device before allowing DMA */
|
||
IDE_HFLAG_NO_AUTODMA = (1 << 15),
|
||
/* host uses MMIO */
|
||
IDE_HFLAG_MMIO = (1 << 16),
|
||
/* no LBA48 */
|
||
IDE_HFLAG_NO_LBA48 = (1 << 17),
|
||
/* no LBA48 DMA */
|
||
IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
|
||
/* data FIFO is cleared by an error */
|
||
IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
|
||
/* serialize ports */
|
||
IDE_HFLAG_SERIALIZE = (1 << 20),
|
||
/* use legacy IRQs */
|
||
IDE_HFLAG_LEGACY_IRQS = (1 << 21),
|
||
/* force use of legacy IRQs */
|
||
IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
|
||
/* limit LBA48 requests to 256 sectors */
|
||
IDE_HFLAG_RQSIZE_256 = (1 << 23),
|
||
/* use 32-bit I/O ops */
|
||
IDE_HFLAG_IO_32BIT = (1 << 24),
|
||
/* unmask IRQs */
|
||
IDE_HFLAG_UNMASK_IRQS = (1 << 25),
|
||
/* serialize ports if DMA is possible (for sl82c105) */
|
||
IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
|
||
/* force host out of "simplex" mode */
|
||
IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
|
||
/* DSC overlap is unsupported */
|
||
IDE_HFLAG_NO_DSC = (1 << 29),
|
||
/* never use 32-bit I/O ops */
|
||
IDE_HFLAG_NO_IO_32BIT = (1 << 30),
|
||
/* never unmask IRQs */
|
||
IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
|
||
};
|
||
|
||
#ifdef CONFIG_BLK_DEV_OFFBOARD
|
||
# define IDE_HFLAG_OFF_BOARD 0
|
||
#else
|
||
# define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
|
||
#endif
|
||
|
||
struct ide_port_info {
|
||
char *name;
|
||
unsigned int (*init_chipset)(struct pci_dev *);
|
||
void (*init_iops)(ide_hwif_t *);
|
||
void (*init_hwif)(ide_hwif_t *);
|
||
int (*init_dma)(ide_hwif_t *,
|
||
const struct ide_port_info *);
|
||
|
||
const struct ide_tp_ops *tp_ops;
|
||
const struct ide_port_ops *port_ops;
|
||
const struct ide_dma_ops *dma_ops;
|
||
|
||
ide_pci_enablebit_t enablebits[2];
|
||
hwif_chipset_t chipset;
|
||
u32 host_flags;
|
||
u8 pio_mask;
|
||
u8 swdma_mask;
|
||
u8 mwdma_mask;
|
||
u8 udma_mask;
|
||
};
|
||
|
||
int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
|
||
int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
|
||
const struct ide_port_info *, void *);
|
||
void ide_pci_remove(struct pci_dev *);
|
||
|
||
void ide_map_sg(ide_drive_t *, struct request *);
|
||
void ide_init_sg_cmd(ide_drive_t *, struct request *);
|
||
|
||
#define BAD_DMA_DRIVE 0
|
||
#define GOOD_DMA_DRIVE 1
|
||
|
||
struct drive_list_entry {
|
||
const char *id_model;
|
||
const char *id_firmware;
|
||
};
|
||
|
||
int ide_in_drive_list(u16 *, const struct drive_list_entry *);
|
||
|
||
#ifdef CONFIG_BLK_DEV_IDEDMA
|
||
int __ide_dma_bad_drive(ide_drive_t *);
|
||
int ide_id_dma_bug(ide_drive_t *);
|
||
|
||
u8 ide_find_dma_mode(ide_drive_t *, u8);
|
||
|
||
static inline u8 ide_max_dma_mode(ide_drive_t *drive)
|
||
{
|
||
return ide_find_dma_mode(drive, XFER_UDMA_6);
|
||
}
|
||
|
||
void ide_dma_off_quietly(ide_drive_t *);
|
||
void ide_dma_off(ide_drive_t *);
|
||
void ide_dma_on(ide_drive_t *);
|
||
int ide_set_dma(ide_drive_t *);
|
||
void ide_check_dma_crc(ide_drive_t *);
|
||
ide_startstop_t ide_dma_intr(ide_drive_t *);
|
||
|
||
int ide_build_sglist(ide_drive_t *, struct request *);
|
||
void ide_destroy_dmatable(ide_drive_t *);
|
||
|
||
#ifdef CONFIG_BLK_DEV_IDEDMA_SFF
|
||
extern int ide_build_dmatable(ide_drive_t *, struct request *);
|
||
int ide_allocate_dma_engine(ide_hwif_t *);
|
||
void ide_release_dma_engine(ide_hwif_t *);
|
||
|
||
void ide_dma_host_set(ide_drive_t *, int);
|
||
extern int ide_dma_setup(ide_drive_t *);
|
||
void ide_dma_exec_cmd(ide_drive_t *, u8);
|
||
extern void ide_dma_start(ide_drive_t *);
|
||
extern int __ide_dma_end(ide_drive_t *);
|
||
int ide_dma_test_irq(ide_drive_t *);
|
||
extern void ide_dma_lost_irq(ide_drive_t *);
|
||
extern void ide_dma_timeout(ide_drive_t *);
|
||
extern const struct ide_dma_ops sff_dma_ops;
|
||
#endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
|
||
|
||
#else
|
||
static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
|
||
static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
|
||
static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
|
||
static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
|
||
static inline void ide_dma_off(ide_drive_t *drive) { ; }
|
||
static inline void ide_dma_on(ide_drive_t *drive) { ; }
|
||
static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
|
||
static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
|
||
static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
|
||
#endif /* CONFIG_BLK_DEV_IDEDMA */
|
||
|
||
#ifndef CONFIG_BLK_DEV_IDEDMA_SFF
|
||
static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
|
||
#endif
|
||
|
||
#ifdef CONFIG_BLK_DEV_IDEACPI
|
||
extern int ide_acpi_exec_tfs(ide_drive_t *drive);
|
||
extern void ide_acpi_get_timing(ide_hwif_t *hwif);
|
||
extern void ide_acpi_push_timing(ide_hwif_t *hwif);
|
||
extern void ide_acpi_init(ide_hwif_t *hwif);
|
||
void ide_acpi_port_init_devices(ide_hwif_t *);
|
||
extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
|
||
#else
|
||
static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
|
||
static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
|
||
static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
|
||
static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
|
||
static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
|
||
static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
|
||
#endif
|
||
|
||
void ide_remove_port_from_hwgroup(ide_hwif_t *);
|
||
void ide_unregister(ide_hwif_t *);
|
||
|
||
void ide_register_region(struct gendisk *);
|
||
void ide_unregister_region(struct gendisk *);
|
||
|
||
void ide_undecoded_slave(ide_drive_t *);
|
||
|
||
void ide_port_apply_params(ide_hwif_t *);
|
||
|
||
struct ide_host *ide_host_alloc_all(const struct ide_port_info *, hw_regs_t **);
|
||
struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
|
||
void ide_host_free(struct ide_host *);
|
||
int ide_host_register(struct ide_host *, const struct ide_port_info *,
|
||
hw_regs_t **);
|
||
int ide_host_add(const struct ide_port_info *, hw_regs_t **,
|
||
struct ide_host **);
|
||
void ide_host_remove(struct ide_host *);
|
||
int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
|
||
void ide_port_unregister_devices(ide_hwif_t *);
|
||
void ide_port_scan(ide_hwif_t *);
|
||
|
||
static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
|
||
{
|
||
return hwif->hwif_data;
|
||
}
|
||
|
||
static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
|
||
{
|
||
hwif->hwif_data = data;
|
||
}
|
||
|
||
const char *ide_xfer_verbose(u8 mode);
|
||
extern void ide_toggle_bounce(ide_drive_t *drive, int on);
|
||
extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
|
||
|
||
static inline int ide_dev_has_iordy(u16 *id)
|
||
{
|
||
return ((id[ATA_ID_FIELD_VALID] & 2) && ata_id_has_iordy(id)) ? 1 : 0;
|
||
}
|
||
|
||
static inline int ide_dev_is_sata(u16 *id)
|
||
{
|
||
/*
|
||
* See if word 93 is 0 AND drive is at least ATA-5 compatible
|
||
* verifying that word 80 by casting it to a signed type --
|
||
* this trick allows us to filter out the reserved values of
|
||
* 0x0000 and 0xffff along with the earlier ATA revisions...
|
||
*/
|
||
if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
u64 ide_get_lba_addr(struct ide_taskfile *, int);
|
||
u8 ide_dump_status(ide_drive_t *, const char *, u8);
|
||
|
||
struct ide_timing {
|
||
u8 mode;
|
||
u8 setup; /* t1 */
|
||
u16 act8b; /* t2 for 8-bit io */
|
||
u16 rec8b; /* t2i for 8-bit io */
|
||
u16 cyc8b; /* t0 for 8-bit io */
|
||
u16 active; /* t2 or tD */
|
||
u16 recover; /* t2i or tK */
|
||
u16 cycle; /* t0 */
|
||
u16 udma; /* t2CYCTYP/2 */
|
||
};
|
||
|
||
enum {
|
||
IDE_TIMING_SETUP = (1 << 0),
|
||
IDE_TIMING_ACT8B = (1 << 1),
|
||
IDE_TIMING_REC8B = (1 << 2),
|
||
IDE_TIMING_CYC8B = (1 << 3),
|
||
IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
|
||
IDE_TIMING_CYC8B,
|
||
IDE_TIMING_ACTIVE = (1 << 4),
|
||
IDE_TIMING_RECOVER = (1 << 5),
|
||
IDE_TIMING_CYCLE = (1 << 6),
|
||
IDE_TIMING_UDMA = (1 << 7),
|
||
IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
|
||
IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
|
||
IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
|
||
};
|
||
|
||
struct ide_timing *ide_timing_find_mode(u8);
|
||
u16 ide_pio_cycle_time(ide_drive_t *, u8);
|
||
void ide_timing_merge(struct ide_timing *, struct ide_timing *,
|
||
struct ide_timing *, unsigned int);
|
||
int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
|
||
|
||
int ide_scan_pio_blacklist(char *);
|
||
|
||
u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
|
||
|
||
int ide_set_pio_mode(ide_drive_t *, u8);
|
||
int ide_set_dma_mode(ide_drive_t *, u8);
|
||
|
||
void ide_set_pio(ide_drive_t *, u8);
|
||
|
||
static inline void ide_set_max_pio(ide_drive_t *drive)
|
||
{
|
||
ide_set_pio(drive, 255);
|
||
}
|
||
|
||
extern spinlock_t ide_lock;
|
||
extern struct mutex ide_cfg_mtx;
|
||
/*
|
||
* Structure locking:
|
||
*
|
||
* ide_cfg_mtx and ide_lock together protect changes to
|
||
* ide_hwif_t->{next,hwgroup}
|
||
* ide_drive_t->next
|
||
*
|
||
* ide_hwgroup_t->busy: ide_lock
|
||
* ide_hwgroup_t->hwif: ide_lock
|
||
* ide_hwif_t->mate: constant, no locking
|
||
* ide_drive_t->hwif: constant, no locking
|
||
*/
|
||
|
||
#define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
|
||
|
||
extern struct bus_type ide_bus_type;
|
||
extern struct class *ide_port_class;
|
||
|
||
/* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */
|
||
#define ide_id_has_flush_cache(id) ((id)[ATA_ID_CFS_ENABLE_2] & 0x3000)
|
||
|
||
/* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
|
||
#define ide_id_has_flush_cache_ext(id) \
|
||
(((id)[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400)
|
||
|
||
static inline void ide_dump_identify(u8 *id)
|
||
{
|
||
print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
|
||
}
|
||
|
||
static inline int hwif_to_node(ide_hwif_t *hwif)
|
||
{
|
||
return hwif->dev ? dev_to_node(hwif->dev) : -1;
|
||
}
|
||
|
||
static inline ide_drive_t *ide_get_paired_drive(ide_drive_t *drive)
|
||
{
|
||
ide_hwif_t *hwif = HWIF(drive);
|
||
|
||
return &hwif->drives[(drive->dn ^ 1) & 1];
|
||
}
|
||
#endif /* _IDE_H */
|