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ide.h
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1 #ifndef _IDE_H
2 #define _IDE_H
3 /*
4  * linux/include/linux/ide.h
5  *
6  * Copyright (C) 1994-2002 Linus Torvalds & authors
7  */
8 
9 #include <linux/init.h>
10 #include <linux/ioport.h>
11 #include <linux/ata.h>
12 #include <linux/blkdev.h>
13 #include <linux/proc_fs.h>
14 #include <linux/interrupt.h>
15 #include <linux/bitops.h>
16 #include <linux/bio.h>
17 #include <linux/pci.h>
18 #include <linux/completion.h>
19 #include <linux/pm.h>
20 #include <linux/mutex.h>
21 #ifdef CONFIG_BLK_DEV_IDEACPI
22 #include <acpi/acpi.h>
23 #endif
24 #include <asm/byteorder.h>
25 #include <asm/io.h>
26 
27 /* for request_sense */
28 #include <linux/cdrom.h>
29 
30 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
31 # define SUPPORT_VLB_SYNC 0
32 #else
33 # define SUPPORT_VLB_SYNC 1
34 #endif
35 
36 /*
37  * Probably not wise to fiddle with these
38  */
39 #define IDE_DEFAULT_MAX_FAILURES 1
40 #define ERROR_MAX 8 /* Max read/write errors per sector */
41 #define ERROR_RESET 3 /* Reset controller every 4th retry */
42 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
43 
44 struct device;
45 
46 /* Error codes returned in rq->errors to the higher part of the driver. */
47 enum {
51 };
52 
53 /*
54  * Definitions for accessing IDE controller registers
55  */
56 #define IDE_NR_PORTS (10)
57 
58 struct ide_io_ports {
59  unsigned long data_addr;
60 
61  union {
62  unsigned long error_addr; /* read: error */
63  unsigned long feature_addr; /* write: feature */
64  };
65 
66  unsigned long nsect_addr;
67  unsigned long lbal_addr;
68  unsigned long lbam_addr;
69  unsigned long lbah_addr;
70 
71  unsigned long device_addr;
72 
73  union {
74  unsigned long status_addr; /* ¬†read: status ¬†*/
75  unsigned long command_addr; /* write: command */
76  };
77 
78  unsigned long ctl_addr;
79 
80  unsigned long irq_addr;
81 };
82 
83 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
84 
85 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
86 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
87 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
88 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
89 
90 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
91 
92 #define SATA_NR_PORTS (3) /* 16 possible ?? */
93 
94 #define SATA_STATUS_OFFSET (0)
95 #define SATA_ERROR_OFFSET (1)
96 #define SATA_CONTROL_OFFSET (2)
97 
98 /*
99  * Our Physical Region Descriptor (PRD) table should be large enough
100  * to handle the biggest I/O request we are likely to see. Since requests
101  * can have no more than 256 sectors, and since the typical blocksize is
102  * two or more sectors, we could get by with a limit of 128 entries here for
103  * the usual worst case. Most requests seem to include some contiguous blocks,
104  * further reducing the number of table entries required.
105  *
106  * The driver reverts to PIO mode for individual requests that exceed
107  * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
108  * 100% of all crazy scenarios here is not necessary.
109  *
110  * As it turns out though, we must allocate a full 4KB page for this,
111  * so the two PRD tables (ide0 & ide1) will each get half of that,
112  * allowing each to have about 256 entries (8 bytes each) from this.
113  */
114 #define PRD_BYTES 8
115 #define PRD_ENTRIES 256
116 
117 /*
118  * Some more useful definitions
119  */
120 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
121 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
122 #define SECTOR_SIZE 512
123 
124 /*
125  * Timeouts for various operations:
126  */
127 enum {
128  /* spec allows up to 20ms, but CF cards and SSD drives need more */
129  WAIT_DRQ = 1 * HZ, /* 1s */
130  /* some laptops are very slow */
131  WAIT_READY = 5 * HZ, /* 5s */
132  /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
133  WAIT_PIDENTIFY = 10 * HZ, /* 10s */
134  /* worst case when spinning up */
135  WAIT_WORSTCASE = 30 * HZ, /* 30s */
136  /* maximum wait for an IRQ to happen */
137  WAIT_CMD = 10 * HZ, /* 10s */
138  /* Some drives require a longer IRQ timeout. */
139  WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
140  /*
141  * Some drives (for example, Seagate STT3401A Travan) require a very
142  * long timeout, because they don't return an interrupt or clear their
143  * BSY bit until after the command completes (even retension commands).
144  */
145  WAIT_TAPE_CMD = 900 * HZ, /* 900s */
146  /* minimum sleep time */
147  WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
148 };
149 
150 /*
151  * Op codes for special requests to be handled by ide_special_rq().
152  * Values should be in the range of 0x20 to 0x3f.
153  */
154 #define REQ_DRIVE_RESET 0x20
155 #define REQ_DEVSET_EXEC 0x21
156 #define REQ_PARK_HEADS 0x22
157 #define REQ_UNPARK_HEADS 0x23
158 
159 /*
160  * hwif_chipset_t is used to keep track of the specific hardware
161  * chipset used by each IDE interface, if known.
162  */
168 };
169 
171 
172 /*
173  * Structure to hold all information about the location of this port
174  */
175 struct ide_hw {
176  union {
178  unsigned long io_ports_array[IDE_NR_PORTS];
179  };
180 
181  int irq; /* our irq number */
182  struct device *dev, *parent;
183  unsigned long config;
184 };
185 
186 static inline void ide_std_init_ports(struct ide_hw *hw,
187  unsigned long io_addr,
188  unsigned long ctl_addr)
189 {
190  unsigned int i;
191 
192  for (i = 0; i <= 7; i++)
193  hw->io_ports_array[i] = io_addr++;
194 
195  hw->io_ports.ctl_addr = ctl_addr;
196 }
197 
198 #define MAX_HWIFS 10
199 
200 /*
201  * Now for the data we need to maintain per-drive: ide_drive_t
202  */
203 
204 #define ide_scsi 0x21
205 #define ide_disk 0x20
206 #define ide_optical 0x7
207 #define ide_cdrom 0x5
208 #define ide_tape 0x1
209 #define ide_floppy 0x0
210 
211 /*
212  * Special Driver Flags
213  */
214 enum {
218 };
219 
220 /*
221  * Status returned from various ide_ functions
222  */
223 typedef enum {
224  ide_stopped, /* no drive operation was started */
225  ide_started, /* a drive operation was started, handler was set */
227 
228 enum {
229  IDE_VALID_ERROR = (1 << 1),
231  IDE_VALID_NSECT = (1 << 2),
232  IDE_VALID_LBAL = (1 << 3),
233  IDE_VALID_LBAM = (1 << 4),
234  IDE_VALID_LBAH = (1 << 5),
235  IDE_VALID_DEVICE = (1 << 6),
248 };
249 
250 enum {
251  IDE_TFLAG_LBA48 = (1 << 0),
252  IDE_TFLAG_WRITE = (1 << 1),
255  /* force 16-bit I/O operations */
256  IDE_TFLAG_IO_16BIT = (1 << 4),
257  /* struct ide_cmd was allocated using kmalloc() */
258  IDE_TFLAG_DYN = (1 << 5),
259  IDE_TFLAG_FS = (1 << 6),
261  IDE_TFLAG_SET_XFER = (1 << 8),
262 };
263 
264 enum {
265  IDE_FTFLAG_FLAGGED = (1 << 0),
268  IDE_FTFLAG_IN_DATA = (1 << 3),
269 };
270 
271 struct ide_taskfile {
272  u8 data; /* 0: data byte (for TASKFILE ioctl) */
273  union { /* 1: */
274  u8 error; /* read: error */
275  u8 feature; /* write: feature */
276  };
277  u8 nsect; /* 2: number of sectors */
278  u8 lbal; /* 3: LBA low */
279  u8 lbam; /* 4: LBA mid */
280  u8 lbah; /* 5: LBA high */
281  u8 device; /* 6: device select */
282  union { /* 7: */
283  u8 status; /* read: status */
284  u8 command; /* write: command */
285  };
286 };
287 
288 struct ide_cmd {
289  struct ide_taskfile tf;
291  struct {
292  struct {
295  } out, in;
296  } valid;
297 
299  u8 ftf_flags; /* for TASKFILE ioctl */
300  int protocol;
301 
302  int sg_nents; /* number of sg entries */
304  int sg_dma_direction; /* DMA transfer direction */
305 
306  unsigned int nbytes;
307  unsigned int nleft;
308  unsigned int last_xfer_len;
309 
311  unsigned int cursg_ofs;
312 
313  struct request *rq; /* copy of request */
314 };
315 
316 /* ATAPI packet command flags */
317 enum {
318  /* set when an error is considered normal - no retry (ide-tape) */
319  PC_FLAG_ABORT = (1 << 0),
322  PC_FLAG_DMA_OK = (1 << 3),
324  PC_FLAG_DMA_ERROR = (1 << 5),
325  PC_FLAG_WRITING = (1 << 6),
326 };
327 
328 #define ATAPI_WAIT_PC (60 * HZ)
329 
330 struct ide_atapi_pc {
331  /* actual packet bytes */
332  u8 c[12];
333  /* incremented on each retry */
334  int retries;
335  int error;
336 
337  /* bytes to transfer */
338  int req_xfer;
339 
340  /* the corresponding request */
341  struct request *rq;
342 
343  unsigned long flags;
344 
345  /*
346  * those are more or less driver-specific and some of them are subject
347  * to change/removal later.
348  */
349  unsigned long timeout;
350 };
351 
352 struct ide_devset;
353 struct ide_driver;
354 
355 #ifdef CONFIG_BLK_DEV_IDEACPI
356 struct ide_acpi_drive_link;
357 struct ide_acpi_hwif_link;
358 #endif
359 
360 struct ide_drive_s;
361 
362 struct ide_disk_ops {
363  int (*check)(struct ide_drive_s *, const char *);
366  void (*setup)(struct ide_drive_s *);
367  void (*flush)(struct ide_drive_s *);
368  int (*init_media)(struct ide_drive_s *, struct gendisk *);
369  int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
370  int);
372  sector_t);
373  int (*ioctl)(struct ide_drive_s *, struct block_device *,
374  fmode_t, unsigned int, unsigned long);
375 };
376 
377 /* ATAPI device flags */
378 enum {
380 
381  /* ide-cd */
382  /* Drive cannot eject the disc. */
383  IDE_AFLAG_NO_EJECT = (1 << 1),
384  /* Drive is a pre ATAPI 1.2 drive. */
386  /* TOC addresses are in BCD. */
388  /* TOC track numbers are in BCD. */
390  /* Saved TOC information is current. */
392  /* We think that the drive door is locked. */
394  /* SET_CD_SPEED command is unsupported. */
398  IDE_AFLAG_SANYO_3CD = (1 << 11),
402 
403  /* ide-floppy */
404  /* Avoid commands not supported in Clik drive */
405  IDE_AFLAG_CLIK_DRIVE = (1 << 15),
406  /* Requires BH algorithm for packets */
407  IDE_AFLAG_ZIP_DRIVE = (1 << 16),
408  /* Supports format progress report */
409  IDE_AFLAG_SRFP = (1 << 17),
410 
411  /* ide-tape */
412  IDE_AFLAG_IGNORE_DSC = (1 << 18),
413  /* 0 When the tape position is unknown */
415  /* Device already opened */
416  IDE_AFLAG_BUSY = (1 << 20),
417  /* Attempt to auto-detect the current user block size */
418  IDE_AFLAG_DETECT_BS = (1 << 21),
419  /* Currently on a filemark */
420  IDE_AFLAG_FILEMARK = (1 << 22),
421  /* 0 = no tape is loaded, so we don't rewind after ejecting */
423 
425 };
426 
427 /* device flags */
428 enum {
429  /* restore settings after device reset */
431  /* device is using DMA for read/write */
433  /* okay to unmask other IRQs */
434  IDE_DFLAG_UNMASK = (1 << 2),
435  /* don't attempt flushes */
436  IDE_DFLAG_NOFLUSH = (1 << 3),
437  /* DSC overlap */
439  /* give potential excess bandwidth */
440  IDE_DFLAG_NICE1 = (1 << 5),
441  /* device is physically present */
442  IDE_DFLAG_PRESENT = (1 << 6),
443  /* disable Host Protected Area */
444  IDE_DFLAG_NOHPA = (1 << 7),
445  /* id read from device (synthetic if not set) */
446  IDE_DFLAG_ID_READ = (1 << 8),
447  IDE_DFLAG_NOPROBE = (1 << 9),
448  /* need to do check_media_change() */
449  IDE_DFLAG_REMOVABLE = (1 << 10),
450  /* needed for removable devices */
451  IDE_DFLAG_ATTACH = (1 << 11),
453  /* disallow setting unmask bit */
454  IDE_DFLAG_NO_UNMASK = (1 << 13),
455  /* disallow enabling 32-bit I/O */
457  /* for removable only: door lock/unlock works */
459  /* disallow DMA */
460  IDE_DFLAG_NODMA = (1 << 16),
461  /* powermanagement told us not to do anything, so sleep nicely */
462  IDE_DFLAG_BLOCKED = (1 << 17),
463  /* sleeping & sleep field valid */
464  IDE_DFLAG_SLEEPING = (1 << 18),
465  IDE_DFLAG_POST_RESET = (1 << 19),
467  IDE_DFLAG_LBA48 = (1 << 21),
468  /* status of write cache */
469  IDE_DFLAG_WCACHE = (1 << 22),
470  /* used for ignoring ATA_DF */
471  IDE_DFLAG_NOWERR = (1 << 23),
472  /* retrying in PIO */
474  IDE_DFLAG_LBA = (1 << 25),
475  /* don't unload heads */
476  IDE_DFLAG_NO_UNLOAD = (1 << 26),
477  /* heads unloaded, please don't reset port */
478  IDE_DFLAG_PARKED = (1 << 27),
480  /* write protect */
481  IDE_DFLAG_WP = (1 << 29),
483  IDE_DFLAG_NIEN_QUIRK = (1 << 31),
484 };
485 
486 struct ide_drive_s {
487  char name[4]; /* drive name, such as "hda" */
488  char driver_req[10]; /* requests specific driver */
489 
490  struct request_queue *queue; /* request queue */
491 
492  struct request *rq; /* current request */
493  void *driver_data; /* extra driver data */
494  u16 *id; /* identification info */
495 #ifdef CONFIG_IDE_PROC_FS
496  struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
497  const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
498 #endif
499  struct hwif_s *hwif; /* actually (ide_hwif_t *) */
500 
501  const struct ide_disk_ops *disk_ops;
502 
503  unsigned long dev_flags;
504 
505  unsigned long sleep; /* sleep until this time */
506  unsigned long timeout; /* max time to wait for irq */
507 
508  u8 special_flags; /* special action flags */
509 
510  u8 select; /* basic drive/head select reg value */
511  u8 retry_pio; /* retrying dma capable host in pio */
512  u8 waiting_for_dma; /* dma currently in progress */
513  u8 dma; /* atapi dma flag */
514 
515  u8 init_speed; /* transfer rate set at boot */
516  u8 current_speed; /* current transfer rate set */
517  u8 desired_speed; /* desired transfer rate set */
518  u8 pio_mode; /* for ->set_pio_mode _only_ */
519  u8 dma_mode; /* for ->set_dma_mode _only_ */
520  u8 dn; /* now wide spread use */
521  u8 acoustic; /* acoustic management */
522  u8 media; /* disk, cdrom, tape, floppy, ... */
523  u8 ready_stat; /* min status value for drive ready */
524  u8 mult_count; /* current multiple sector setting */
525  u8 mult_req; /* requested multiple sector setting */
526  u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
527  u8 bad_wstat; /* used for ignoring ATA_DF */
528  u8 head; /* "real" number of heads */
529  u8 sect; /* "real" sectors per track */
530  u8 bios_head; /* BIOS/fdisk/LILO number of heads */
531  u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
532 
533  /* delay this long before sending packet command */
535 
536  unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
537  unsigned int cyl; /* "real" number of cyls */
538  void *drive_data; /* used by set_pio_mode/dev_select() */
539  unsigned int failures; /* current failure count */
540  unsigned int max_failures; /* maximum allowed failure count */
541  u64 probed_capacity;/* initial/native media capacity */
542  u64 capacity64; /* total number of sectors */
543 
544  int lun; /* logical unit */
545  int crc_count; /* crc counter to reduce drive speed */
546 
547  unsigned long debug_mask; /* debugging levels switch */
548 
549 #ifdef CONFIG_BLK_DEV_IDEACPI
550  struct ide_acpi_drive_link *acpidata;
551 #endif
552  struct list_head list;
553  struct device gendev;
554  struct completion gendev_rel_comp; /* to deal with device release() */
555 
556  /* current packet command */
557  struct ide_atapi_pc *pc;
558 
559  /* last failed packet command */
561 
562  /* callback for packet commands */
564 
566 
567  unsigned long atapi_flags;
568 
570 
571  /* current sense rq and buffer */
575 };
576 
577 typedef struct ide_drive_s ide_drive_t;
578 
579 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
580 
581 #define to_ide_drv(obj, cont_type) \
582  container_of(obj, struct cont_type, dev)
583 
584 #define ide_drv_g(disk, cont_type) \
585  container_of((disk)->private_data, struct cont_type, driver)
586 
587 struct ide_port_info;
588 
589 struct ide_tp_ops {
590  void (*exec_command)(struct hwif_s *, u8);
591  u8 (*read_status)(struct hwif_s *);
592  u8 (*read_altstatus)(struct hwif_s *);
593  void (*write_devctl)(struct hwif_s *, u8);
594 
598 
600  void *, unsigned int);
602  void *, unsigned int);
603 };
604 
605 extern const struct ide_tp_ops default_tp_ops;
606 
625 struct ide_port_ops {
635  int (*test_irq)(struct hwif_s *);
636 
639 
640  u8 (*cable_detect)(struct hwif_s *);
641 };
642 
643 struct ide_dma_ops {
645  int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *);
646  void (*dma_start)(struct ide_drive_s *);
647  int (*dma_end)(struct ide_drive_s *);
650  /* below ones are optional */
651  int (*dma_check)(struct ide_drive_s *, struct ide_cmd *);
653  void (*dma_clear)(struct ide_drive_s *);
654  /*
655  * The following method is optional and only required to be
656  * implemented for the SFF-8038i compatible controllers.
657  */
659 };
660 
661 enum {
662  IDE_PFLAG_PROBING = (1 << 0),
663 };
664 
665 struct ide_host;
666 
667 typedef struct hwif_s {
668  struct hwif_s *mate; /* other hwif from same PCI chip */
669  struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
670 
671  struct ide_host *host;
672 
673  char name[6]; /* name of interface, eg. "ide0" */
674 
676 
677  unsigned long sata_scr[SATA_NR_PORTS];
678 
680 
681  unsigned long port_flags;
682 
683  u8 major; /* our major number */
684  u8 index; /* 0 for ide0; 1 for ide1; ... */
685  u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
686 
688 
690 
694 
695  u8 cbl; /* cable type */
696 
697  hwif_chipset_t chipset; /* sub-module for tuning.. */
698 
699  struct device *dev;
700 
701  void (*rw_disk)(ide_drive_t *, struct request *);
702 
703  const struct ide_tp_ops *tp_ops;
704  const struct ide_port_ops *port_ops;
705  const struct ide_dma_ops *dma_ops;
706 
707  /* dma physical region descriptor table (cpu view) */
708  unsigned int *dmatable_cpu;
709  /* dma physical region descriptor table (dma view) */
711 
712  /* maximum number of PRD table entries */
714  /* PRD entry size in bytes */
716 
717  /* Scatter-gather list used to build the above */
719  int sg_max_nents; /* Maximum number of entries in it */
720 
721  struct ide_cmd cmd; /* current command */
722 
723  int rqsize; /* max sectors per request */
724  int irq; /* our irq number */
725 
726  unsigned long dma_base; /* base addr for dma ports */
727 
728  unsigned long config_data; /* for use by chipset-specific code */
729  unsigned long select_data; /* for use by chipset-specific code */
730 
731  unsigned long extra_base; /* extra addr for dma ports */
732  unsigned extra_ports; /* number of extra dma ports */
733 
734  unsigned present : 1; /* this interface exists */
735  unsigned busy : 1; /* serializes devices on a port */
736 
737  struct device gendev;
738  struct device *portdev;
739 
740  struct completion gendev_rel_comp; /* To deal with device release() */
741 
742  void *hwif_data; /* extra hwif data */
743 
744 #ifdef CONFIG_BLK_DEV_IDEACPI
745  struct ide_acpi_hwif_link *acpidata;
746 #endif
747 
748  /* IRQ handler, if active */
750 
751  /* BOOL: polling active & poll_timeout field valid */
752  unsigned int polling : 1;
753 
754  /* current drive */
756 
757  /* current request */
758  struct request *rq;
759 
760  /* failsafe timer */
762  /* timeout value during long polls */
763  unsigned long poll_timeout;
764  /* queried upon timeouts */
766 
767  int req_gen;
769 
772 
773 #define MAX_HOST_PORTS 4
774 
775 struct ide_host {
776  ide_hwif_t *ports[MAX_HOST_PORTS + 1];
777  unsigned int n_ports;
778  struct device *dev[2];
779 
780  int (*init_chipset)(struct pci_dev *);
781 
784 
786 
787  unsigned long host_flags;
788 
790 
791  void *host_priv;
792  ide_hwif_t *cur_port; /* for hosts requiring serialization */
793 
794  /* used for hosts requiring serialization */
795  volatile unsigned long host_busy;
796 };
797 
798 #define IDE_HOST_BUSY 0
799 
800 /*
801  * internal ide interrupt handler type
802  */
805 
806 /* used by ide-cd, ide-floppy, etc. */
807 typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned);
808 
809 extern struct mutex ide_setting_mtx;
810 
811 /*
812  * configurable drive settings
813  */
814 
815 #define DS_SYNC (1 << 0)
816 
817 struct ide_devset {
818  int (*get)(ide_drive_t *);
819  int (*set)(ide_drive_t *, int);
820  unsigned int flags;
821 };
822 
823 #define __DEVSET(_flags, _get, _set) { \
824  .flags = _flags, \
825  .get = _get, \
826  .set = _set, \
827 }
828 
829 #define ide_devset_get(name, field) \
830 static int get_##name(ide_drive_t *drive) \
831 { \
832  return drive->field; \
833 }
834 
835 #define ide_devset_set(name, field) \
836 static int set_##name(ide_drive_t *drive, int arg) \
837 { \
838  drive->field = arg; \
839  return 0; \
840 }
841 
842 #define ide_devset_get_flag(name, flag) \
843 static int get_##name(ide_drive_t *drive) \
844 { \
845  return !!(drive->dev_flags & flag); \
846 }
847 
848 #define ide_devset_set_flag(name, flag) \
849 static int set_##name(ide_drive_t *drive, int arg) \
850 { \
851  if (arg) \
852  drive->dev_flags |= flag; \
853  else \
854  drive->dev_flags &= ~flag; \
855  return 0; \
856 }
857 
858 #define __IDE_DEVSET(_name, _flags, _get, _set) \
859 const struct ide_devset ide_devset_##_name = \
860  __DEVSET(_flags, _get, _set)
861 
862 #define IDE_DEVSET(_name, _flags, _get, _set) \
863 static __IDE_DEVSET(_name, _flags, _get, _set)
864 
865 #define ide_devset_rw(_name, _func) \
866 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
867 
868 #define ide_devset_w(_name, _func) \
869 IDE_DEVSET(_name, 0, NULL, set_##_func)
870 
871 #define ide_ext_devset_rw(_name, _func) \
872 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
873 
874 #define ide_ext_devset_rw_sync(_name, _func) \
875 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
876 
877 #define ide_decl_devset(_name) \
878 extern const struct ide_devset ide_devset_##_name
879 
880 ide_decl_devset(io_32bit);
881 ide_decl_devset(keepsettings);
882 ide_decl_devset(pio_mode);
883 ide_decl_devset(unmaskirq);
884 ide_decl_devset(using_dma);
885 
886 #ifdef CONFIG_IDE_PROC_FS
887 /*
888  * /proc/ide interface
889  */
890 
891 #define ide_devset_rw_field(_name, _field) \
892 ide_devset_get(_name, _field); \
893 ide_devset_set(_name, _field); \
894 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
895 
896 #define ide_devset_rw_flag(_name, _field) \
897 ide_devset_get_flag(_name, _field); \
898 ide_devset_set_flag(_name, _field); \
899 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
900 
901 struct ide_proc_devset {
902  const char *name;
903  const struct ide_devset *setting;
904  int min, max;
905  int (*mulf)(ide_drive_t *);
906  int (*divf)(ide_drive_t *);
907 };
908 
909 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
910  .name = __stringify(_name), \
911  .setting = &ide_devset_##_name, \
912  .min = _min, \
913  .max = _max, \
914  .mulf = _mulf, \
915  .divf = _divf, \
916 }
917 
918 #define IDE_PROC_DEVSET(_name, _min, _max) \
919 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
920 
921 typedef struct {
922  const char *name;
923  umode_t mode;
924  const struct file_operations *proc_fops;
925 } ide_proc_entry_t;
926 
927 void proc_ide_create(void);
928 void proc_ide_destroy(void);
929 void ide_proc_register_port(ide_hwif_t *);
930 void ide_proc_port_register_devices(ide_hwif_t *);
931 void ide_proc_unregister_device(ide_drive_t *);
932 void ide_proc_unregister_port(ide_hwif_t *);
933 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
934 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
935 
936 extern const struct file_operations ide_capacity_proc_fops;
937 extern const struct file_operations ide_geometry_proc_fops;
938 #else
939 static inline void proc_ide_create(void) { ; }
940 static inline void proc_ide_destroy(void) { ; }
941 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
942 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
943 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
944 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
945 static inline void ide_proc_register_driver(ide_drive_t *drive,
946  struct ide_driver *driver) { ; }
947 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
948  struct ide_driver *driver) { ; }
949 #endif
950 
951 enum {
952  /* enter/exit functions */
953  IDE_DBG_FUNC = (1 << 0),
954  /* sense key/asc handling */
955  IDE_DBG_SENSE = (1 << 1),
956  /* packet commands handling */
957  IDE_DBG_PC = (1 << 2),
958  /* request handling */
959  IDE_DBG_RQ = (1 << 3),
960  /* driver probing/setup */
961  IDE_DBG_PROBE = (1 << 4),
962 };
963 
964 /* DRV_NAME has to be defined in the driver before using the macro below */
965 #define __ide_debug_log(lvl, fmt, args...) \
966 { \
967  if (unlikely(drive->debug_mask & lvl)) \
968  printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
969  __func__, ## args); \
970 }
971 
972 /*
973  * Power Management state machine (rq->pm->pm_step).
974  *
975  * For each step, the core calls ide_start_power_step() first.
976  * This can return:
977  * - ide_stopped : In this case, the core calls us back again unless
978  * step have been set to ide_power_state_completed.
979  * - ide_started : In this case, the channel is left busy until an
980  * async event (interrupt) occurs.
981  * Typically, ide_start_power_step() will issue a taskfile request with
982  * do_rw_taskfile().
983  *
984  * Upon reception of the interrupt, the core will call ide_complete_power_step()
985  * with the error code if any. This routine should update the step value
986  * and return. It should not start a new request. The core will call
987  * ide_start_power_step() for the new step value, unless step have been
988  * set to IDE_PM_COMPLETED.
989  */
990 enum {
994 
999 
1001 };
1002 
1003 int generic_ide_suspend(struct device *, pm_message_t);
1004 int generic_ide_resume(struct device *);
1005 
1006 void ide_complete_power_step(ide_drive_t *, struct request *);
1007 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1008 void ide_complete_pm_rq(ide_drive_t *, struct request *);
1009 void ide_check_pm_state(ide_drive_t *, struct request *);
1010 
1011 /*
1012  * Subdrivers support.
1013  *
1014  * The gendriver.owner field should be set to the module owner of this driver.
1015  * The gendriver.name field should be set to the name of this driver
1016  */
1017 struct ide_driver {
1018  const char *version;
1019  ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1021  int (*probe)(ide_drive_t *);
1022  void (*remove)(ide_drive_t *);
1023  void (*resume)(ide_drive_t *);
1024  void (*shutdown)(ide_drive_t *);
1025 #ifdef CONFIG_IDE_PROC_FS
1026  ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1027  const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1028 #endif
1029 };
1030 
1031 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1032 
1033 int ide_device_get(ide_drive_t *);
1034 void ide_device_put(ide_drive_t *);
1035 
1037  unsigned int get_ioctl;
1038  unsigned int set_ioctl;
1039  const struct ide_devset *setting;
1040 };
1041 
1042 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1043  unsigned long, const struct ide_ioctl_devset *);
1044 
1045 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1046 
1047 extern int ide_vlb_clk;
1048 extern int ide_pci_clk;
1049 
1050 int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int);
1051 void ide_kill_rq(ide_drive_t *, struct request *);
1052 
1053 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1054 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1055 
1056 void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
1057  unsigned int);
1058 
1059 void ide_pad_transfer(ide_drive_t *, int, int);
1060 
1061 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1062 
1063 void ide_fix_driveid(u16 *);
1064 
1065 extern void ide_fixstring(u8 *, const int, const int);
1066 
1067 int ide_busy_sleep(ide_drive_t *, unsigned long, int);
1068 
1069 int __ide_wait_stat(ide_drive_t *, u8, u8, unsigned long, u8 *);
1070 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1071 
1072 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1073 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1074 
1075 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1076 
1077 extern int ide_devset_execute(ide_drive_t *drive,
1078  const struct ide_devset *setting, int arg);
1079 
1080 void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
1081 int ide_complete_rq(ide_drive_t *, int, unsigned int);
1082 
1083 void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd);
1084 void ide_tf_dump(const char *, struct ide_cmd *);
1085 
1086 void ide_exec_command(ide_hwif_t *, u8);
1087 u8 ide_read_status(ide_hwif_t *);
1088 u8 ide_read_altstatus(ide_hwif_t *);
1089 void ide_write_devctl(ide_hwif_t *, u8);
1090 
1091 void ide_dev_select(ide_drive_t *);
1092 void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8);
1093 void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8);
1094 
1095 void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1096 void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1097 
1098 void SELECT_MASK(ide_drive_t *, int);
1099 
1100 u8 ide_read_error(ide_drive_t *);
1101 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1102 
1103 int ide_check_ireason(ide_drive_t *, struct request *, int, int, int);
1104 
1105 int ide_check_atapi_device(ide_drive_t *, const char *);
1106 
1107 void ide_init_pc(struct ide_atapi_pc *);
1108 
1109 /* Disk head parking */
1112  char *buf);
1114  const char *buf, size_t len);
1115 
1116 /*
1117  * Special requests for ide-tape block device strategy routine.
1118  *
1119  * In order to service a character device command, we add special requests to
1120  * the tail of our block device request queue and wait for their completion.
1121  */
1122 enum {
1123  REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1124  REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1125  REQ_IDETAPE_READ = (1 << 2),
1126  REQ_IDETAPE_WRITE = (1 << 3),
1127 };
1128 
1129 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
1130  void *, unsigned int);
1131 
1132 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1133 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1134 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1135 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1136 void ide_retry_pc(ide_drive_t *drive);
1137 
1138 void ide_prep_sense(ide_drive_t *drive, struct request *rq);
1139 int ide_queue_sense_rq(ide_drive_t *drive, void *special);
1140 
1141 int ide_cd_expiry(ide_drive_t *);
1142 
1143 int ide_cd_get_xferlen(struct request *);
1144 
1145 ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
1146 
1147 ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
1148 
1149 void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
1150 
1151 void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
1152 
1153 int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
1154 int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
1155 
1156 int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
1157 
1158 int ide_dev_read_id(ide_drive_t *, u8, u16 *, int);
1159 
1160 extern int ide_driveid_update(ide_drive_t *);
1161 extern int ide_config_drive_speed(ide_drive_t *, u8);
1162 extern u8 eighty_ninty_three (ide_drive_t *);
1163 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1164 
1165 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1166 
1167 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1168 
1169 extern void ide_timer_expiry(unsigned long);
1170 extern irqreturn_t ide_intr(int irq, void *dev_id);
1171 extern void do_ide_request(struct request_queue *);
1172 extern void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq);
1173 
1174 void ide_init_disk(struct gendisk *, ide_drive_t *);
1175 
1176 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1177 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1178 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1179 #else
1180 #define ide_pci_register_driver(d) pci_register_driver(d)
1181 #endif
1182 
1183 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1184 {
1185  if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1186  return 1;
1187  return 0;
1188 }
1189 
1190 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1191  struct ide_hw *, struct ide_hw **);
1192 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1193 
1194 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1195 int ide_pci_set_master(struct pci_dev *, const char *);
1196 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1197 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1198 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1199 #else
1200 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1201  const struct ide_port_info *d)
1202 {
1203  return -EINVAL;
1204 }
1205 #endif
1206 
1208  u8 reg; /* byte pci reg holding the enable-bit */
1209  u8 mask; /* mask to isolate the enable-bit */
1210  u8 val; /* value of masked reg when "enabled" */
1211 };
1212 
1213 enum {
1214  /* Uses ISA control ports not PCI ones. */
1216  /* single port device */
1217  IDE_HFLAG_SINGLE = (1 << 1),
1218  /* don't use legacy PIO blacklist */
1220  /* set for the second port of QD65xx */
1222  /* use PIO8/9 for prefetch off/on */
1224  /* use PIO6/7 for fast-devsel off/on */
1226  /* use 100-102 and 200-202 PIO values to set DMA modes */
1228  /*
1229  * keep DMA setting when programming PIO mode, may be used only
1230  * for hosts which have separate PIO and DMA timings (ie. PMAC)
1231  */
1233  /* program host for the transfer mode after programming device */
1235  /* don't program host/device for the transfer mode ("smart" hosts) */
1237  /* trust BIOS for programming chipset/device for DMA */
1239  /* host is CS5510/CS5520 */
1240  IDE_HFLAG_CS5520 = (1 << 11),
1241  /* ATAPI DMA is unsupported */
1243  /* set if host is a "non-bootable" controller */
1245  /* host doesn't support DMA */
1246  IDE_HFLAG_NO_DMA = (1 << 14),
1247  /* check if host is PCI IDE device before allowing DMA */
1249  /* host uses MMIO */
1250  IDE_HFLAG_MMIO = (1 << 16),
1251  /* no LBA48 */
1252  IDE_HFLAG_NO_LBA48 = (1 << 17),
1253  /* no LBA48 DMA */
1255  /* data FIFO is cleared by an error */
1257  /* serialize ports */
1258  IDE_HFLAG_SERIALIZE = (1 << 20),
1259  /* host is DTC2278 */
1260  IDE_HFLAG_DTC2278 = (1 << 21),
1261  /* 4 devices on a single set of I/O ports */
1262  IDE_HFLAG_4DRIVES = (1 << 22),
1263  /* host is TRM290 */
1264  IDE_HFLAG_TRM290 = (1 << 23),
1265  /* use 32-bit I/O ops */
1266  IDE_HFLAG_IO_32BIT = (1 << 24),
1267  /* unmask IRQs */
1270  /* serialize ports if DMA is possible (for sl82c105) */
1272  /* force host out of "simplex" mode */
1274  /* DSC overlap is unsupported */
1275  IDE_HFLAG_NO_DSC = (1 << 29),
1276  /* never use 32-bit I/O ops */
1278  /* never unmask IRQs */
1280 };
1281 
1282 #ifdef CONFIG_BLK_DEV_OFFBOARD
1283 # define IDE_HFLAG_OFF_BOARD 0
1284 #else
1285 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1286 #endif
1287 
1289  char *name;
1290 
1291  int (*init_chipset)(struct pci_dev *);
1292 
1295 
1296  void (*init_iops)(ide_hwif_t *);
1297  void (*init_hwif)(ide_hwif_t *);
1298  int (*init_dma)(ide_hwif_t *,
1299  const struct ide_port_info *);
1300 
1301  const struct ide_tp_ops *tp_ops;
1302  const struct ide_port_ops *port_ops;
1303  const struct ide_dma_ops *dma_ops;
1304 
1306 
1308 
1309  u16 max_sectors; /* if < than the default one */
1310 
1312 
1314 
1319 };
1320 
1321 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1322 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1323  const struct ide_port_info *, void *);
1324 void ide_pci_remove(struct pci_dev *);
1325 
1326 #ifdef CONFIG_PM
1327 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1328 int ide_pci_resume(struct pci_dev *);
1329 #else
1330 #define ide_pci_suspend NULL
1331 #define ide_pci_resume NULL
1332 #endif
1333 
1334 void ide_map_sg(ide_drive_t *, struct ide_cmd *);
1335 void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
1336 
1337 #define BAD_DMA_DRIVE 0
1338 #define GOOD_DMA_DRIVE 1
1339 
1341  const char *id_model;
1342  const char *id_firmware;
1343 };
1344 
1345 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1346 
1347 #ifdef CONFIG_BLK_DEV_IDEDMA
1348 int ide_dma_good_drive(ide_drive_t *);
1349 int __ide_dma_bad_drive(ide_drive_t *);
1350 
1351 u8 ide_find_dma_mode(ide_drive_t *, u8);
1352 
1353 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1354 {
1355  return ide_find_dma_mode(drive, XFER_UDMA_6);
1356 }
1357 
1358 void ide_dma_off_quietly(ide_drive_t *);
1359 void ide_dma_off(ide_drive_t *);
1360 void ide_dma_on(ide_drive_t *);
1361 int ide_set_dma(ide_drive_t *);
1362 void ide_check_dma_crc(ide_drive_t *);
1363 ide_startstop_t ide_dma_intr(ide_drive_t *);
1364 
1365 int ide_allocate_dma_engine(ide_hwif_t *);
1366 void ide_release_dma_engine(ide_hwif_t *);
1367 
1368 int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
1369 void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
1370 
1371 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1372 int config_drive_for_dma(ide_drive_t *);
1373 int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
1374 void ide_dma_host_set(ide_drive_t *, int);
1375 int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
1376 extern void ide_dma_start(ide_drive_t *);
1377 int ide_dma_end(ide_drive_t *);
1378 int ide_dma_test_irq(ide_drive_t *);
1379 int ide_dma_sff_timer_expiry(ide_drive_t *);
1380 u8 ide_dma_sff_read_status(ide_hwif_t *);
1381 extern const struct ide_dma_ops sff_dma_ops;
1382 #else
1383 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1384 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1385 
1386 void ide_dma_lost_irq(ide_drive_t *);
1387 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1388 
1389 #else
1390 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1391 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1392 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1393 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1394 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1395 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1396 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1397 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1398 static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
1399 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1400 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1401 static inline int ide_dma_prepare(ide_drive_t *drive,
1402  struct ide_cmd *cmd) { return 1; }
1403 static inline void ide_dma_unmap_sg(ide_drive_t *drive,
1404  struct ide_cmd *cmd) { ; }
1405 #endif /* CONFIG_BLK_DEV_IDEDMA */
1406 
1407 #ifdef CONFIG_BLK_DEV_IDEACPI
1408 int ide_acpi_init(void);
1409 bool ide_port_acpi(ide_hwif_t *hwif);
1410 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1411 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1412 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1413 void ide_acpi_init_port(ide_hwif_t *);
1414 void ide_acpi_port_init_devices(ide_hwif_t *);
1415 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1416 #else
1417 static inline int ide_acpi_init(void) { return 0; }
1418 static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; }
1419 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1420 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1421 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1422 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1423 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1424 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1425 #endif
1426 
1427 void ide_register_region(struct gendisk *);
1428 void ide_unregister_region(struct gendisk *);
1429 
1430 void ide_check_nien_quirk_list(ide_drive_t *);
1431 void ide_undecoded_slave(ide_drive_t *);
1432 
1433 void ide_port_apply_params(ide_hwif_t *);
1434 int ide_sysfs_register_port(ide_hwif_t *);
1435 
1436 struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **,
1437  unsigned int);
1438 void ide_host_free(struct ide_host *);
1439 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1440  struct ide_hw **);
1441 int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int,
1442  struct ide_host **);
1443 void ide_host_remove(struct ide_host *);
1444 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1445 void ide_port_unregister_devices(ide_hwif_t *);
1446 void ide_port_scan(ide_hwif_t *);
1447 
1448 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1449 {
1450  return hwif->hwif_data;
1451 }
1452 
1453 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1454 {
1455  hwif->hwif_data = data;
1456 }
1457 
1458 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1459 
1460 u64 ide_get_lba_addr(struct ide_cmd *, int);
1461 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1462 
1463 struct ide_timing {
1465  u8 setup; /* t1 */
1466  u16 act8b; /* t2 for 8-bit io */
1467  u16 rec8b; /* t2i for 8-bit io */
1468  u16 cyc8b; /* t0 for 8-bit io */
1469  u16 active; /* t2 or tD */
1470  u16 recover; /* t2i or tK */
1471  u16 cycle; /* t0 */
1472  u16 udma; /* t2CYCTYP/2 */
1473 };
1474 
1475 enum {
1476  IDE_TIMING_SETUP = (1 << 0),
1477  IDE_TIMING_ACT8B = (1 << 1),
1478  IDE_TIMING_REC8B = (1 << 2),
1479  IDE_TIMING_CYC8B = (1 << 3),
1482  IDE_TIMING_ACTIVE = (1 << 4),
1484  IDE_TIMING_CYCLE = (1 << 6),
1485  IDE_TIMING_UDMA = (1 << 7),
1489 };
1490 
1492 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1493 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1494  struct ide_timing *, unsigned int);
1495 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1496 
1497 #ifdef CONFIG_IDE_XFER_MODE
1498 int ide_scan_pio_blacklist(char *);
1499 const char *ide_xfer_verbose(u8);
1500 int ide_pio_need_iordy(ide_drive_t *, const u8);
1501 int ide_set_pio_mode(ide_drive_t *, u8);
1502 int ide_set_dma_mode(ide_drive_t *, u8);
1503 void ide_set_pio(ide_drive_t *, u8);
1504 int ide_set_xfer_rate(ide_drive_t *, u8);
1505 #else
1506 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1507 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1508 #endif
1509 
1510 static inline void ide_set_max_pio(ide_drive_t *drive)
1511 {
1512  ide_set_pio(drive, 255);
1513 }
1514 
1515 char *ide_media_string(ide_drive_t *);
1516 
1517 extern struct device_attribute ide_dev_attrs[];
1518 extern struct bus_type ide_bus_type;
1519 extern struct class *ide_port_class;
1520 
1521 static inline void ide_dump_identify(u8 *id)
1522 {
1523  print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1524 }
1525 
1526 static inline int hwif_to_node(ide_hwif_t *hwif)
1527 {
1528  return hwif->dev ? dev_to_node(hwif->dev) : -1;
1529 }
1530 
1531 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1532 {
1533  ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1534 
1535  return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1536 }
1537 
1538 static inline void *ide_get_drivedata(ide_drive_t *drive)
1539 {
1540  return drive->drive_data;
1541 }
1542 
1543 static inline void ide_set_drivedata(ide_drive_t *drive, void *data)
1544 {
1545  drive->drive_data = data;
1546 }
1547 
1548 #define ide_port_for_each_dev(i, dev, port) \
1549  for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1550 
1551 #define ide_port_for_each_present_dev(i, dev, port) \
1552  for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1553  if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1554 
1555 #define ide_host_for_each_port(i, port, host) \
1556  for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
1557 
1558 #endif /* _IDE_H */