/* SPDX-License-Identifier: GPL-2.0 */
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#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/ata.h>
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#include <linux/blk-mq.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/pci.h>
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#include <linux/completion.h>
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#include <linux/pm.h>
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#include <linux/mutex.h>
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/* for request_sense */
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#include <linux/cdrom.h>
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#include <scsi/scsi_cmnd.h>
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#include <asm/byteorder.h>
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#include <asm/io.h>
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/*
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* Probably not wise to fiddle with these
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*/
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#define SUPPORT_VLB_SYNC 1
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#define IDE_DEFAULT_MAX_FAILURES 1
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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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struct device;
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/* values for ide_request.type */
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enum ata_priv_type {
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ATA_PRIV_MISC,
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ATA_PRIV_TASKFILE,
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ATA_PRIV_PC,
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ATA_PRIV_SENSE, /* sense request */
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ATA_PRIV_PM_SUSPEND, /* suspend request */
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ATA_PRIV_PM_RESUME, /* resume request */
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};
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struct ide_request {
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struct scsi_request sreq;
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u8 sense[SCSI_SENSE_BUFFERSIZE];
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u8 type;
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void *special;
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};
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static inline struct ide_request *ide_req(struct request *rq)
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{
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return blk_mq_rq_to_pdu(rq);
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}
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static inline bool ata_misc_request(struct request *rq)
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{
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return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_MISC;
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}
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static inline bool ata_taskfile_request(struct request *rq)
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{
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return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_TASKFILE;
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}
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static inline bool ata_pc_request(struct request *rq)
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{
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return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_PC;
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}
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static inline bool ata_sense_request(struct request *rq)
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{
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return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_SENSE;
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}
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static inline bool ata_pm_request(struct request *rq)
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{
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return blk_rq_is_private(rq) &&
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(ide_req(rq)->type == ATA_PRIV_PM_SUSPEND ||
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ide_req(rq)->type == ATA_PRIV_PM_RESUME);
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}
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/* Error codes returned in result to the higher part of the driver. */
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enum {
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IDE_DRV_ERROR_GENERAL = 101,
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IDE_DRV_ERROR_FILEMARK = 102,
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IDE_DRV_ERROR_EOD = 103,
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};
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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 (ATA_BUSY | ATA_ERR)
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#define BAD_W_STAT (BAD_R_STAT | ATA_DF)
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#define BAD_STAT (BAD_R_STAT | ATA_DRQ)
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#define DRIVE_READY (ATA_DRDY | ATA_DSC)
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#define BAD_CRC (ATA_ABORTED | ATA_ICRC)
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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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/*
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* Timeouts for various operations:
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*/
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enum {
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/* spec allows up to 20ms, but CF cards and SSD drives need more */
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WAIT_DRQ = 1 * HZ, /* 1s */
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/* some laptops are very slow */
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WAIT_READY = 5 * HZ, /* 5s */
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/* should be less than 3ms (?), if all ATAPI CD is closed at boot */
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WAIT_PIDENTIFY = 10 * HZ, /* 10s */
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/* worst case when spinning up */
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WAIT_WORSTCASE = 30 * HZ, /* 30s */
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/* maximum wait for an IRQ to happen */
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WAIT_CMD = 10 * HZ, /* 10s */
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/* Some drives require a longer IRQ timeout. */
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WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
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/*
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* Some drives (for example, Seagate STT3401A Travan) require a very
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* long timeout, because they don't return an interrupt or clear their
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* BSY bit until after the command completes (even retension commands).
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*/
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WAIT_TAPE_CMD = 900 * HZ, /* 900s */
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/* minimum sleep time */
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WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
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};
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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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#define REQ_DEVSET_EXEC 0x21
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#define REQ_PARK_HEADS 0x22
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#define REQ_UNPARK_HEADS 0x23
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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_4drives, 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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struct ide_hw {
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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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struct device *dev, *parent;
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unsigned long config;
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};
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static inline void ide_std_init_ports(struct ide_hw *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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#define MAX_HWIFS 10
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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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enum {
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IDE_SFLAG_SET_GEOMETRY = BIT(0),
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IDE_SFLAG_RECALIBRATE = BIT(1),
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IDE_SFLAG_SET_MULTMODE = BIT(2),
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};
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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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enum {
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IDE_VALID_ERROR = BIT(1),
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IDE_VALID_FEATURE = IDE_VALID_ERROR,
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IDE_VALID_NSECT = BIT(2),
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IDE_VALID_LBAL = BIT(3),
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IDE_VALID_LBAM = BIT(4),
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IDE_VALID_LBAH = BIT(5),
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IDE_VALID_DEVICE = BIT(6),
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IDE_VALID_LBA = IDE_VALID_LBAL |
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IDE_VALID_LBAM |
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IDE_VALID_LBAH,
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IDE_VALID_OUT_TF = IDE_VALID_FEATURE |
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IDE_VALID_NSECT |
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IDE_VALID_LBA,
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IDE_VALID_IN_TF = IDE_VALID_NSECT |
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IDE_VALID_LBA,
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IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF,
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IDE_VALID_IN_HOB = IDE_VALID_ERROR |
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IDE_VALID_NSECT |
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IDE_VALID_LBA,
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};
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enum {
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IDE_TFLAG_LBA48 = BIT(0),
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IDE_TFLAG_WRITE = BIT(1),
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IDE_TFLAG_CUSTOM_HANDLER = BIT(2),
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IDE_TFLAG_DMA_PIO_FALLBACK = BIT(3),
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/* force 16-bit I/O operations */
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IDE_TFLAG_IO_16BIT = BIT(4),
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/* struct ide_cmd was allocated using kmalloc() */
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IDE_TFLAG_DYN = BIT(5),
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IDE_TFLAG_FS = BIT(6),
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IDE_TFLAG_MULTI_PIO = BIT(7),
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IDE_TFLAG_SET_XFER = BIT(8),
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};
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enum {
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IDE_FTFLAG_FLAGGED = BIT(0),
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IDE_FTFLAG_SET_IN_FLAGS = BIT(1),
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IDE_FTFLAG_OUT_DATA = BIT(2),
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IDE_FTFLAG_IN_DATA = BIT(3),
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};
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struct ide_taskfile {
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u8 data; /* 0: data byte (for TASKFILE ioctl) */
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union { /* 1: */
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u8 error; /* read: error */
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u8 feature; /* write: feature */
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};
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u8 nsect; /* 2: number of sectors */
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u8 lbal; /* 3: LBA low */
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u8 lbam; /* 4: LBA mid */
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u8 lbah; /* 5: LBA high */
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u8 device; /* 6: device select */
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union { /* 7: */
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u8 status; /* read: status */
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u8 command; /* write: command */
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};
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};
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struct ide_cmd {
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struct ide_taskfile tf;
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struct ide_taskfile hob;
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struct {
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struct {
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u8 tf;
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u8 hob;
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} out, in;
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} valid;
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u16 tf_flags;
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u8 ftf_flags; /* for TASKFILE ioctl */
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int protocol;
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int sg_nents; /* number of sg entries */
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int orig_sg_nents;
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int sg_dma_direction; /* DMA transfer direction */
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unsigned int nbytes;
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unsigned int nleft;
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unsigned int last_xfer_len;
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struct scatterlist *cursg;
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unsigned int cursg_ofs;
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struct request *rq; /* copy of request */
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};
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/* ATAPI packet command flags */
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enum {
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/* set when an error is considered normal - no retry (ide-tape) */
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PC_FLAG_ABORT = BIT(0),
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PC_FLAG_SUPPRESS_ERROR = BIT(1),
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PC_FLAG_WAIT_FOR_DSC = BIT(2),
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PC_FLAG_DMA_OK = BIT(3),
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PC_FLAG_DMA_IN_PROGRESS = BIT(4),
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PC_FLAG_DMA_ERROR = BIT(5),
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PC_FLAG_WRITING = BIT(6),
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};
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#define ATAPI_WAIT_PC (60 * HZ)
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struct ide_atapi_pc {
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/* actual packet bytes */
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u8 c[12];
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/* incremented on each retry */
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int retries;
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int error;
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/* bytes to transfer */
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int req_xfer;
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/* the corresponding request */
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struct request *rq;
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unsigned long flags;
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/*
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* those are more or less driver-specific and some of them are subject
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* to change/removal later.
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*/
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unsigned long timeout;
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};
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struct ide_devset;
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struct ide_driver;
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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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struct ide_drive_s;
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struct ide_disk_ops {
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int (*check)(struct ide_drive_s *, const char *);
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int (*get_capacity)(struct ide_drive_s *);
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void (*unlock_native_capacity)(struct ide_drive_s *);
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void (*setup)(struct ide_drive_s *);
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void (*flush)(struct ide_drive_s *);
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int (*init_media)(struct ide_drive_s *, struct gendisk *);
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int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
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int);
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ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
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sector_t);
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int (*ioctl)(struct ide_drive_s *, struct block_device *,
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fmode_t, unsigned int, unsigned long);
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int (*compat_ioctl)(struct ide_drive_s *, struct block_device *,
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fmode_t, unsigned int, unsigned long);
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};
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/* ATAPI device flags */
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enum {
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IDE_AFLAG_DRQ_INTERRUPT = BIT(0),
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/* ide-cd */
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/* Drive cannot eject the disc. */
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IDE_AFLAG_NO_EJECT = BIT(1),
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/* Drive is a pre ATAPI 1.2 drive. */
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IDE_AFLAG_PRE_ATAPI12 = BIT(2),
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/* TOC addresses are in BCD. */
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IDE_AFLAG_TOCADDR_AS_BCD = BIT(3),
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/* TOC track numbers are in BCD. */
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IDE_AFLAG_TOCTRACKS_AS_BCD = BIT(4),
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/* Saved TOC information is current. */
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IDE_AFLAG_TOC_VALID = BIT(6),
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/* We think that the drive door is locked. */
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IDE_AFLAG_DOOR_LOCKED = BIT(7),
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/* SET_CD_SPEED command is unsupported. */
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IDE_AFLAG_NO_SPEED_SELECT = BIT(8),
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IDE_AFLAG_VERTOS_300_SSD = BIT(9),
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IDE_AFLAG_VERTOS_600_ESD = BIT(10),
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IDE_AFLAG_SANYO_3CD = BIT(11),
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IDE_AFLAG_FULL_CAPS_PAGE = BIT(12),
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IDE_AFLAG_PLAY_AUDIO_OK = BIT(13),
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IDE_AFLAG_LE_SPEED_FIELDS = BIT(14),
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/* ide-floppy */
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/* Avoid commands not supported in Clik drive */
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IDE_AFLAG_CLIK_DRIVE = BIT(15),
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/* Requires BH algorithm for packets */
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IDE_AFLAG_ZIP_DRIVE = BIT(16),
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/* Supports format progress report */
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IDE_AFLAG_SRFP = BIT(17),
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/* ide-tape */
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IDE_AFLAG_IGNORE_DSC = BIT(18),
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/* 0 When the tape position is unknown */
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IDE_AFLAG_ADDRESS_VALID = BIT(19),
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/* Device already opened */
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IDE_AFLAG_BUSY = BIT(20),
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/* Attempt to auto-detect the current user block size */
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IDE_AFLAG_DETECT_BS = BIT(21),
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/* Currently on a filemark */
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IDE_AFLAG_FILEMARK = BIT(22),
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/* 0 = no tape is loaded, so we don't rewind after ejecting */
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IDE_AFLAG_MEDIUM_PRESENT = BIT(23),
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IDE_AFLAG_NO_AUTOCLOSE = BIT(24),
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};
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/* device flags */
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enum {
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/* restore settings after device reset */
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IDE_DFLAG_KEEP_SETTINGS = BIT(0),
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/* device is using DMA for read/write */
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IDE_DFLAG_USING_DMA = BIT(1),
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/* okay to unmask other IRQs */
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IDE_DFLAG_UNMASK = BIT(2),
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/* don't attempt flushes */
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IDE_DFLAG_NOFLUSH = BIT(3),
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/* DSC overlap */
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IDE_DFLAG_DSC_OVERLAP = BIT(4),
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/* give potential excess bandwidth */
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IDE_DFLAG_NICE1 = BIT(5),
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/* device is physically present */
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IDE_DFLAG_PRESENT = BIT(6),
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/* disable Host Protected Area */
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IDE_DFLAG_NOHPA = BIT(7),
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/* id read from device (synthetic if not set) */
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IDE_DFLAG_ID_READ = BIT(8),
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IDE_DFLAG_NOPROBE = BIT(9),
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/* need to do check_media_change() */
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IDE_DFLAG_REMOVABLE = BIT(10),
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IDE_DFLAG_FORCED_GEOM = BIT(12),
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/* disallow setting unmask bit */
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IDE_DFLAG_NO_UNMASK = BIT(13),
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/* disallow enabling 32-bit I/O */
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IDE_DFLAG_NO_IO_32BIT = BIT(14),
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/* for removable only: door lock/unlock works */
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IDE_DFLAG_DOORLOCKING = BIT(15),
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/* disallow DMA */
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IDE_DFLAG_NODMA = BIT(16),
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/* powermanagement told us not to do anything, so sleep nicely */
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IDE_DFLAG_BLOCKED = BIT(17),
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/* sleeping & sleep field valid */
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IDE_DFLAG_SLEEPING = BIT(18),
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IDE_DFLAG_POST_RESET = BIT(19),
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IDE_DFLAG_UDMA33_WARNED = BIT(20),
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IDE_DFLAG_LBA48 = BIT(21),
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/* status of write cache */
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IDE_DFLAG_WCACHE = BIT(22),
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/* used for ignoring ATA_DF */
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IDE_DFLAG_NOWERR = BIT(23),
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/* retrying in PIO */
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IDE_DFLAG_DMA_PIO_RETRY = BIT(24),
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IDE_DFLAG_LBA = BIT(25),
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/* don't unload heads */
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IDE_DFLAG_NO_UNLOAD = BIT(26),
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/* heads unloaded, please don't reset port */
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IDE_DFLAG_PARKED = BIT(27),
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IDE_DFLAG_MEDIA_CHANGED = BIT(28),
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/* write protect */
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IDE_DFLAG_WP = BIT(29),
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IDE_DFLAG_FORMAT_IN_PROGRESS = BIT(30),
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IDE_DFLAG_NIEN_QUIRK = BIT(31),
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};
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struct ide_drive_s {
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char name[4]; /* drive name, such as "hda" */
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char driver_req[10]; /* requests specific driver */
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struct request_queue *queue; /* request queue */
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bool (*prep_rq)(struct ide_drive_s *, struct request *);
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struct blk_mq_tag_set tag_set;
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struct request *rq; /* current request */
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void *driver_data; /* extra driver data */
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u16 *id; /* identification info */
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#ifdef CONFIG_IDE_PROC_FS
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struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
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const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
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#endif
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struct hwif_s *hwif; /* actually (ide_hwif_t *) */
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const struct ide_disk_ops *disk_ops;
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unsigned long dev_flags;
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unsigned long sleep; /* sleep until this time */
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unsigned long timeout; /* max time to wait for irq */
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u8 special_flags; /* special action flags */
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u8 select; /* basic drive/head select reg value */
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u8 retry_pio; /* retrying dma capable host in pio */
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u8 waiting_for_dma; /* dma currently in progress */
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u8 dma; /* atapi dma flag */
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u8 init_speed; /* transfer rate set at boot */
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u8 current_speed; /* current transfer rate set */
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u8 desired_speed; /* desired transfer rate set */
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u8 pio_mode; /* for ->set_pio_mode _only_ */
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u8 dma_mode; /* for ->set_dma_mode _only_ */
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u8 dn; /* now wide spread use */
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u8 acoustic; /* acoustic management */
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u8 media; /* disk, cdrom, tape, floppy, ... */
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u8 ready_stat; /* min status value for drive ready */
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u8 mult_count; /* current multiple sector setting */
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u8 mult_req; /* requested multiple sector setting */
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u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
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u8 bad_wstat; /* used for ignoring ATA_DF */
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u8 head; /* "real" number of heads */
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u8 sect; /* "real" sectors per track */
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u8 bios_head; /* BIOS/fdisk/LILO number of heads */
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u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
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/* delay this long before sending packet command */
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u8 pc_delay;
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unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
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unsigned int cyl; /* "real" number of cyls */
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void *drive_data; /* used by set_pio_mode/dev_select() */
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unsigned int failures; /* current failure count */
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unsigned int max_failures; /* maximum allowed failure count */
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u64 probed_capacity;/* initial/native media capacity */
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u64 capacity64; /* total number of sectors */
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int lun; /* logical unit */
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int crc_count; /* crc counter to reduce drive speed */
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unsigned long debug_mask; /* debugging levels switch */
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#ifdef CONFIG_BLK_DEV_IDEACPI
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struct ide_acpi_drive_link *acpidata;
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#endif
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struct list_head list;
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struct device gendev;
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struct completion gendev_rel_comp; /* to deal with device release() */
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/* current packet command */
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struct ide_atapi_pc *pc;
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/* last failed packet command */
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struct ide_atapi_pc *failed_pc;
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/* callback for packet commands */
|
int (*pc_callback)(struct ide_drive_s *, int);
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ide_startstop_t (*irq_handler)(struct ide_drive_s *);
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unsigned long atapi_flags;
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struct ide_atapi_pc request_sense_pc;
|
|
/* current sense rq and buffer */
|
bool sense_rq_armed;
|
bool sense_rq_active;
|
struct request *sense_rq;
|
struct request_sense sense_data;
|
|
/* async sense insertion */
|
struct work_struct rq_work;
|
struct list_head rq_list;
|
};
|
|
typedef struct ide_drive_s ide_drive_t;
|
|
#define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
|
|
#define to_ide_drv(obj, cont_type) \
|
container_of(obj, struct cont_type, dev)
|
|
#define ide_drv_g(disk, cont_type) \
|
container_of((disk)->private_data, struct cont_type, driver)
|
|
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 *);
|
void (*write_devctl)(struct hwif_s *, u8);
|
|
void (*dev_select)(ide_drive_t *);
|
void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8);
|
void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8);
|
|
void (*input_data)(ide_drive_t *, struct ide_cmd *,
|
void *, unsigned int);
|
void (*output_data)(ide_drive_t *, struct ide_cmd *,
|
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
|
* @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
|
* @clear_irq: clear IRQ
|
*
|
* @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)(struct hwif_s *, ide_drive_t *);
|
void (*set_dma_mode)(struct hwif_s *, ide_drive_t *);
|
blk_status_t (*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 *);
|
void (*clear_irq)(ide_drive_t *);
|
int (*test_irq)(struct hwif_s *);
|
|
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 *, struct ide_cmd *);
|
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 *);
|
/* below ones are optional */
|
int (*dma_check)(struct ide_drive_s *, struct ide_cmd *);
|
int (*dma_timer_expiry)(struct ide_drive_s *);
|
void (*dma_clear)(struct ide_drive_s *);
|
/*
|
* The following method is optional and only required to be
|
* implemented for the SFF-8038i compatible controllers.
|
*/
|
u8 (*dma_sff_read_status)(struct hwif_s *);
|
};
|
|
enum {
|
IDE_PFLAG_PROBING = BIT(0),
|
};
|
|
struct ide_host;
|
|
typedef struct hwif_s {
|
struct hwif_s *mate; /* other hwif from same PCI chip */
|
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 *devices[MAX_DRIVES + 1];
|
|
unsigned long port_flags;
|
|
u8 major; /* our major number */
|
u8 index; /* 0 for ide0; 1 for ide1; ... */
|
u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
|
|
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;
|
|
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;
|
|
/* dma physical region descriptor table (cpu view) */
|
unsigned int *dmatable_cpu;
|
/* dma physical region descriptor table (dma view) */
|
dma_addr_t dmatable_dma;
|
|
/* maximum number of PRD table entries */
|
int prd_max_nents;
|
/* PRD entry size in bytes */
|
int prd_ent_size;
|
|
/* Scatter-gather list used to build the above */
|
struct scatterlist *sg_table;
|
int sg_max_nents; /* Maximum number of entries in it */
|
|
struct ide_cmd cmd; /* current command */
|
|
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 busy : 1; /* serializes devices on a port */
|
|
struct device gendev;
|
struct device *portdev;
|
|
struct completion gendev_rel_comp; /* To deal with device release() */
|
|
void *hwif_data; /* extra hwif data */
|
|
#ifdef CONFIG_BLK_DEV_IDEACPI
|
struct ide_acpi_hwif_link *acpidata;
|
#endif
|
|
/* IRQ handler, if active */
|
ide_startstop_t (*handler)(ide_drive_t *);
|
|
/* BOOL: polling active & poll_timeout field valid */
|
unsigned int polling : 1;
|
|
/* current drive */
|
ide_drive_t *cur_dev;
|
|
/* 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;
|
|
spinlock_t lock;
|
} ____cacheline_internodealigned_in_smp ide_hwif_t;
|
|
#define MAX_HOST_PORTS 4
|
|
struct ide_host {
|
ide_hwif_t *ports[MAX_HOST_PORTS + 1];
|
unsigned int n_ports;
|
struct device *dev[2];
|
|
int (*init_chipset)(struct pci_dev *);
|
|
void (*get_lock)(irq_handler_t, void *);
|
void (*release_lock)(void);
|
|
irq_handler_t irq_handler;
|
|
unsigned long host_flags;
|
|
int irq_flags;
|
|
void *host_priv;
|
ide_hwif_t *cur_port; /* for hosts requiring serialization */
|
|
/* used for hosts requiring serialization */
|
volatile unsigned long host_busy;
|
};
|
|
#define IDE_HOST_BUSY 0
|
|
/*
|
* 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 ide_cmd *, void *, unsigned);
|
|
extern struct mutex ide_setting_mtx;
|
|
/*
|
* configurable drive settings
|
*/
|
|
#define DS_SYNC BIT(0)
|
|
struct ide_devset {
|
int (*get)(ide_drive_t *);
|
int (*set)(ide_drive_t *, int);
|
unsigned int flags;
|
};
|
|
#define __DEVSET(_flags, _get, _set) { \
|
.flags = _flags, \
|
.get = _get, \
|
.set = _set, \
|
}
|
|
#define ide_devset_get(name, field) \
|
static int get_##name(ide_drive_t *drive) \
|
{ \
|
return drive->field; \
|
}
|
|
#define ide_devset_set(name, field) \
|
static int set_##name(ide_drive_t *drive, int arg) \
|
{ \
|
drive->field = arg; \
|
return 0; \
|
}
|
|
#define ide_devset_get_flag(name, flag) \
|
static int get_##name(ide_drive_t *drive) \
|
{ \
|
return !!(drive->dev_flags & flag); \
|
}
|
|
#define ide_devset_set_flag(name, flag) \
|
static int set_##name(ide_drive_t *drive, int arg) \
|
{ \
|
if (arg) \
|
drive->dev_flags |= flag; \
|
else \
|
drive->dev_flags &= ~flag; \
|
return 0; \
|
}
|
|
#define __IDE_DEVSET(_name, _flags, _get, _set) \
|
const struct ide_devset ide_devset_##_name = \
|
__DEVSET(_flags, _get, _set)
|
|
#define IDE_DEVSET(_name, _flags, _get, _set) \
|
static __IDE_DEVSET(_name, _flags, _get, _set)
|
|
#define ide_devset_rw(_name, _func) \
|
IDE_DEVSET(_name, 0, get_##_func, set_##_func)
|
|
#define ide_devset_w(_name, _func) \
|
IDE_DEVSET(_name, 0, NULL, set_##_func)
|
|
#define ide_ext_devset_rw(_name, _func) \
|
__IDE_DEVSET(_name, 0, get_##_func, set_##_func)
|
|
#define ide_ext_devset_rw_sync(_name, _func) \
|
__IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
|
|
#define ide_decl_devset(_name) \
|
extern const struct ide_devset ide_devset_##_name
|
|
ide_decl_devset(io_32bit);
|
ide_decl_devset(keepsettings);
|
ide_decl_devset(pio_mode);
|
ide_decl_devset(unmaskirq);
|
ide_decl_devset(using_dma);
|
|
#ifdef CONFIG_IDE_PROC_FS
|
/*
|
* /proc/ide interface
|
*/
|
|
#define ide_devset_rw_field(_name, _field) \
|
ide_devset_get(_name, _field); \
|
ide_devset_set(_name, _field); \
|
IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
|
|
#define ide_devset_ro_field(_name, _field) \
|
ide_devset_get(_name, _field); \
|
IDE_DEVSET(_name, 0, get_##_name, NULL)
|
|
#define ide_devset_rw_flag(_name, _field) \
|
ide_devset_get_flag(_name, _field); \
|
ide_devset_set_flag(_name, _field); \
|
IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
|
|
struct ide_proc_devset {
|
const char *name;
|
const struct ide_devset *setting;
|
int min, max;
|
int (*mulf)(ide_drive_t *);
|
int (*divf)(ide_drive_t *);
|
};
|
|
#define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
|
.name = __stringify(_name), \
|
.setting = &ide_devset_##_name, \
|
.min = _min, \
|
.max = _max, \
|
.mulf = _mulf, \
|
.divf = _divf, \
|
}
|
|
#define IDE_PROC_DEVSET(_name, _min, _max) \
|
__IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
|
|
typedef struct {
|
const char *name;
|
umode_t mode;
|
int (*show)(struct seq_file *, void *);
|
} 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 *, struct ide_driver *);
|
void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
|
|
int ide_capacity_proc_show(struct seq_file *m, void *v);
|
int ide_geometry_proc_show(struct seq_file *m, void *v);
|
#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,
|
struct ide_driver *driver) { ; }
|
static inline void ide_proc_unregister_driver(ide_drive_t *drive,
|
struct ide_driver *driver) { ; }
|
#endif
|
|
enum {
|
/* enter/exit functions */
|
IDE_DBG_FUNC = BIT(0),
|
/* sense key/asc handling */
|
IDE_DBG_SENSE = BIT(1),
|
/* packet commands handling */
|
IDE_DBG_PC = BIT(2),
|
/* request handling */
|
IDE_DBG_RQ = BIT(3),
|
/* driver probing/setup */
|
IDE_DBG_PROBE = BIT(4),
|
};
|
|
/* DRV_NAME has to be defined in the driver before using the macro below */
|
#define __ide_debug_log(lvl, fmt, args...) \
|
{ \
|
if (unlikely(drive->debug_mask & lvl)) \
|
printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
|
__func__, ## args); \
|
}
|
|
/*
|
* Power Management state machine (rq->pm->pm_step).
|
*
|
* For each step, the core calls ide_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, ide_start_power_step() will issue a taskfile request with
|
* do_rw_taskfile().
|
*
|
* Upon reception of the interrupt, the core will call ide_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
|
* ide_start_power_step() for the new step value, unless step have been
|
* set to IDE_PM_COMPLETED.
|
*/
|
enum {
|
IDE_PM_START_SUSPEND,
|
IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
|
IDE_PM_STANDBY,
|
|
IDE_PM_START_RESUME,
|
IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
|
IDE_PM_IDLE,
|
IDE_PM_RESTORE_DMA,
|
|
IDE_PM_COMPLETED,
|
};
|
|
int generic_ide_suspend(struct device *, pm_message_t);
|
int generic_ide_resume(struct device *);
|
|
void ide_complete_power_step(ide_drive_t *, struct request *);
|
ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
|
void ide_complete_pm_rq(ide_drive_t *, struct request *);
|
void ide_check_pm_state(ide_drive_t *, struct request *);
|
|
/*
|
* 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 {
|
const char *version;
|
ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
|
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_entries)(ide_drive_t *);
|
const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
|
#endif
|
};
|
|
#define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
|
|
int ide_device_get(ide_drive_t *);
|
void ide_device_put(ide_drive_t *);
|
|
struct ide_ioctl_devset {
|
unsigned int get_ioctl;
|
unsigned int set_ioctl;
|
const struct ide_devset *setting;
|
};
|
|
int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
|
unsigned long, const struct ide_ioctl_devset *);
|
|
int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
|
|
extern int ide_vlb_clk;
|
extern int ide_pci_clk;
|
|
int ide_end_rq(ide_drive_t *, struct request *, blk_status_t, unsigned int);
|
void ide_kill_rq(ide_drive_t *, struct request *);
|
void ide_insert_request_head(ide_drive_t *, struct request *);
|
|
void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
|
void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
|
|
void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
|
unsigned int);
|
|
void ide_pad_transfer(ide_drive_t *, int, int);
|
|
ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
|
|
void ide_fix_driveid(u16 *);
|
|
extern void ide_fixstring(u8 *, const int, const int);
|
|
int ide_busy_sleep(ide_drive_t *, unsigned long, int);
|
|
int __ide_wait_stat(ide_drive_t *, u8, u8, unsigned long, u8 *);
|
int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
|
|
ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
|
ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
|
|
extern ide_startstop_t ide_do_reset (ide_drive_t *);
|
|
extern int ide_devset_execute(ide_drive_t *drive,
|
const struct ide_devset *setting, int arg);
|
|
void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
|
int ide_complete_rq(ide_drive_t *, blk_status_t, unsigned int);
|
|
void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd);
|
void ide_tf_dump(const char *, struct ide_cmd *);
|
|
void ide_exec_command(ide_hwif_t *, u8);
|
u8 ide_read_status(ide_hwif_t *);
|
u8 ide_read_altstatus(ide_hwif_t *);
|
void ide_write_devctl(ide_hwif_t *, u8);
|
|
void ide_dev_select(ide_drive_t *);
|
void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8);
|
void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8);
|
|
void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
|
void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
|
|
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 *);
|
|
int ide_check_ireason(ide_drive_t *, struct request *, int, int, int);
|
|
int ide_check_atapi_device(ide_drive_t *, const char *);
|
|
void ide_init_pc(struct ide_atapi_pc *);
|
|
/* Disk head parking */
|
extern wait_queue_head_t ide_park_wq;
|
ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
|
char *buf);
|
ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
|
const char *buf, size_t len);
|
|
/*
|
* Special requests for ide-tape block device strategy routine.
|
*
|
* In order to service a character device command, we add special requests to
|
* the tail of our block device request queue and wait for their completion.
|
*/
|
enum {
|
REQ_IDETAPE_PC1 = BIT(0), /* packet command (first stage) */
|
REQ_IDETAPE_PC2 = BIT(1), /* packet command (second stage) */
|
REQ_IDETAPE_READ = BIT(2),
|
REQ_IDETAPE_WRITE = BIT(3),
|
};
|
|
int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
|
void *, unsigned int);
|
|
int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
|
int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
|
int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
|
void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
|
void ide_retry_pc(ide_drive_t *drive);
|
|
void ide_prep_sense(ide_drive_t *drive, struct request *rq);
|
int ide_queue_sense_rq(ide_drive_t *drive, void *special);
|
|
int ide_cd_expiry(ide_drive_t *);
|
|
int ide_cd_get_xferlen(struct request *);
|
|
ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
|
|
ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
|
|
void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
|
|
void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
|
|
int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
|
int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
|
|
int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
|
|
int ide_dev_read_id(ide_drive_t *, u8, u16 *, int);
|
|
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 void ide_timer_expiry(struct timer_list *t);
|
extern irqreturn_t ide_intr(int irq, void *dev_id);
|
extern blk_status_t ide_queue_rq(struct blk_mq_hw_ctx *, const struct blk_mq_queue_data *);
|
extern blk_status_t ide_issue_rq(ide_drive_t *, struct request *, bool);
|
extern void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq);
|
|
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
|
|
static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
|
{
|
if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
|
return 1;
|
return 0;
|
}
|
|
void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
|
struct ide_hw *, struct ide_hw **);
|
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
|
|
struct ide_pci_enablebit {
|
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" */
|
};
|
|
enum {
|
/* Uses ISA control ports not PCI ones. */
|
IDE_HFLAG_ISA_PORTS = BIT(0),
|
/* single port device */
|
IDE_HFLAG_SINGLE = BIT(1),
|
/* don't use legacy PIO blacklist */
|
IDE_HFLAG_PIO_NO_BLACKLIST = BIT(2),
|
/* set for the second port of QD65xx */
|
IDE_HFLAG_QD_2ND_PORT = BIT(3),
|
/* use PIO8/9 for prefetch off/on */
|
IDE_HFLAG_ABUSE_PREFETCH = BIT(4),
|
/* use PIO6/7 for fast-devsel off/on */
|
IDE_HFLAG_ABUSE_FAST_DEVSEL = BIT(5),
|
/* use 100-102 and 200-202 PIO values to set DMA modes */
|
IDE_HFLAG_ABUSE_DMA_MODES = BIT(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 = BIT(7),
|
/* program host for the transfer mode after programming device */
|
IDE_HFLAG_POST_SET_MODE = BIT(8),
|
/* don't program host/device for the transfer mode ("smart" hosts) */
|
IDE_HFLAG_NO_SET_MODE = BIT(9),
|
/* trust BIOS for programming chipset/device for DMA */
|
IDE_HFLAG_TRUST_BIOS_FOR_DMA = BIT(10),
|
/* host is CS5510/CS5520 */
|
IDE_HFLAG_CS5520 = BIT(11),
|
/* ATAPI DMA is unsupported */
|
IDE_HFLAG_NO_ATAPI_DMA = BIT(12),
|
/* set if host is a "non-bootable" controller */
|
IDE_HFLAG_NON_BOOTABLE = BIT(13),
|
/* host doesn't support DMA */
|
IDE_HFLAG_NO_DMA = BIT(14),
|
/* check if host is PCI IDE device before allowing DMA */
|
IDE_HFLAG_NO_AUTODMA = BIT(15),
|
/* host uses MMIO */
|
IDE_HFLAG_MMIO = BIT(16),
|
/* no LBA48 */
|
IDE_HFLAG_NO_LBA48 = BIT(17),
|
/* no LBA48 DMA */
|
IDE_HFLAG_NO_LBA48_DMA = BIT(18),
|
/* data FIFO is cleared by an error */
|
IDE_HFLAG_ERROR_STOPS_FIFO = BIT(19),
|
/* serialize ports */
|
IDE_HFLAG_SERIALIZE = BIT(20),
|
/* host is DTC2278 */
|
IDE_HFLAG_DTC2278 = BIT(21),
|
/* 4 devices on a single set of I/O ports */
|
IDE_HFLAG_4DRIVES = BIT(22),
|
/* host is TRM290 */
|
IDE_HFLAG_TRM290 = BIT(23),
|
/* use 32-bit I/O ops */
|
IDE_HFLAG_IO_32BIT = BIT(24),
|
/* unmask IRQs */
|
IDE_HFLAG_UNMASK_IRQS = BIT(25),
|
IDE_HFLAG_BROKEN_ALTSTATUS = BIT(26),
|
/* serialize ports if DMA is possible (for sl82c105) */
|
IDE_HFLAG_SERIALIZE_DMA = BIT(27),
|
/* force host out of "simplex" mode */
|
IDE_HFLAG_CLEAR_SIMPLEX = BIT(28),
|
/* DSC overlap is unsupported */
|
IDE_HFLAG_NO_DSC = BIT(29),
|
/* never use 32-bit I/O ops */
|
IDE_HFLAG_NO_IO_32BIT = BIT(30),
|
/* never unmask IRQs */
|
IDE_HFLAG_NO_UNMASK_IRQS = BIT(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;
|
|
int (*init_chipset)(struct pci_dev *);
|
|
void (*get_lock)(irq_handler_t, void *);
|
void (*release_lock)(void);
|
|
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;
|
|
struct ide_pci_enablebit enablebits[2];
|
|
hwif_chipset_t chipset;
|
|
u16 max_sectors; /* if < than the default one */
|
|
u32 host_flags;
|
|
int irq_flags;
|
|
u8 pio_mask;
|
u8 swdma_mask;
|
u8 mwdma_mask;
|
u8 udma_mask;
|
};
|
|
/*
|
* State information carried for REQ_TYPE_ATA_PM_SUSPEND and REQ_TYPE_ATA_PM_RESUME
|
* requests.
|
*/
|
struct ide_pm_state {
|
/* PM state machine step value, currently driver specific */
|
int pm_step;
|
/* requested PM state value (S1, S2, S3, S4, ...) */
|
u32 pm_state;
|
void* data; /* for driver use */
|
};
|
|
|
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 *);
|
|
#ifdef CONFIG_PM
|
int ide_pci_suspend(struct pci_dev *, pm_message_t);
|
int ide_pci_resume(struct pci_dev *);
|
#else
|
#define ide_pci_suspend NULL
|
#define ide_pci_resume NULL
|
#endif
|
|
void ide_map_sg(ide_drive_t *, struct ide_cmd *);
|
void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
|
|
#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_good_drive(ide_drive_t *);
|
int __ide_dma_bad_drive(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_allocate_dma_engine(ide_hwif_t *);
|
void ide_release_dma_engine(ide_hwif_t *);
|
|
int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
|
void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
|
|
#ifdef CONFIG_BLK_DEV_IDEDMA_SFF
|
int config_drive_for_dma(ide_drive_t *);
|
int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
|
void ide_dma_host_set(ide_drive_t *, int);
|
int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
|
extern void ide_dma_start(ide_drive_t *);
|
int ide_dma_end(ide_drive_t *);
|
int ide_dma_test_irq(ide_drive_t *);
|
int ide_dma_sff_timer_expiry(ide_drive_t *);
|
u8 ide_dma_sff_read_status(ide_hwif_t *);
|
extern const struct ide_dma_ops sff_dma_ops;
|
#else
|
static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
|
#endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
|
|
void ide_dma_lost_irq(ide_drive_t *);
|
ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
|
|
#else
|
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) { ; }
|
static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
|
static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
|
static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
|
static inline int ide_dma_prepare(ide_drive_t *drive,
|
struct ide_cmd *cmd) { return 1; }
|
static inline void ide_dma_unmap_sg(ide_drive_t *drive,
|
struct ide_cmd *cmd) { ; }
|
#endif /* CONFIG_BLK_DEV_IDEDMA */
|
|
#ifdef CONFIG_BLK_DEV_IDEACPI
|
int ide_acpi_init(void);
|
bool ide_port_acpi(ide_hwif_t *hwif);
|
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);
|
void ide_acpi_init_port(ide_hwif_t *);
|
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_init(void) { return 0; }
|
static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; }
|
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_port(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_register_region(struct gendisk *);
|
void ide_unregister_region(struct gendisk *);
|
|
void ide_check_nien_quirk_list(ide_drive_t *);
|
void ide_undecoded_slave(ide_drive_t *);
|
|
void ide_port_apply_params(ide_hwif_t *);
|
int ide_sysfs_register_port(ide_hwif_t *);
|
|
struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **,
|
unsigned int);
|
void ide_host_free(struct ide_host *);
|
int ide_host_register(struct ide_host *, const struct ide_port_info *,
|
struct ide_hw **);
|
int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int,
|
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;
|
}
|
|
u64 ide_get_lba_addr(struct ide_cmd *, 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 = BIT(0),
|
IDE_TIMING_ACT8B = BIT(1),
|
IDE_TIMING_REC8B = BIT(2),
|
IDE_TIMING_CYC8B = BIT(3),
|
IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
|
IDE_TIMING_CYC8B,
|
IDE_TIMING_ACTIVE = BIT(4),
|
IDE_TIMING_RECOVER = BIT(5),
|
IDE_TIMING_CYCLE = BIT(6),
|
IDE_TIMING_UDMA = BIT(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);
|
|
#ifdef CONFIG_IDE_XFER_MODE
|
int ide_scan_pio_blacklist(char *);
|
const char *ide_xfer_verbose(u8);
|
int ide_pio_need_iordy(ide_drive_t *, const 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);
|
int ide_set_xfer_rate(ide_drive_t *, u8);
|
#else
|
static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
|
static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
|
#endif
|
|
static inline void ide_set_max_pio(ide_drive_t *drive)
|
{
|
ide_set_pio(drive, 255);
|
}
|
|
char *ide_media_string(ide_drive_t *);
|
|
extern const struct attribute_group *ide_dev_groups[];
|
extern struct bus_type ide_bus_type;
|
extern struct class *ide_port_class;
|
|
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_pair_dev(ide_drive_t *drive)
|
{
|
ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
|
|
return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
|
}
|
|
static inline void *ide_get_drivedata(ide_drive_t *drive)
|
{
|
return drive->drive_data;
|
}
|
|
static inline void ide_set_drivedata(ide_drive_t *drive, void *data)
|
{
|
drive->drive_data = data;
|
}
|
|
#define ide_port_for_each_dev(i, dev, port) \
|
for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
|
|
#define ide_port_for_each_present_dev(i, dev, port) \
|
for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
|
if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
|
|
#define ide_host_for_each_port(i, port, host) \
|
for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
|
|
|
#endif /* _IDE_H */
|
