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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Bartlomiej Zolnierkiewicz59bca8c2008-02-01 23:09:33 +01002 * Copyright (C) 1994-1998 Linus Torvalds & authors (see below)
3 * Copyright (C) 1998-2002 Linux ATA Development
4 * Andre Hedrick <andre@linux-ide.org>
Alan Coxccd32e22008-11-02 21:40:08 +01005 * Copyright (C) 2003 Red Hat
Bartlomiej Zolnierkiewicz59bca8c2008-02-01 23:09:33 +01006 * Copyright (C) 2003-2005, 2007 Bartlomiej Zolnierkiewicz
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 */
8
9/*
10 * Mostly written by Mark Lord <mlord@pobox.com>
11 * and Gadi Oxman <gadio@netvision.net.il>
12 * and Andre Hedrick <andre@linux-ide.org>
13 *
14 * This is the IDE/ATA disk driver, as evolved from hd.c and ide.c.
Linus Torvalds1da177e2005-04-16 15:20:36 -070015 */
16
Linus Torvalds1da177e2005-04-16 15:20:36 -070017#include <linux/types.h>
18#include <linux/string.h>
19#include <linux/kernel.h>
20#include <linux/timer.h>
21#include <linux/mm.h>
22#include <linux/interrupt.h>
23#include <linux/major.h>
24#include <linux/errno.h>
25#include <linux/genhd.h>
26#include <linux/slab.h>
27#include <linux/delay.h>
Arjan van de Vencf8b8972006-03-23 03:00:45 -080028#include <linux/mutex.h>
Richard Purdie2bfb6462006-03-31 02:31:16 -080029#include <linux/leds.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include <linux/ide.h>
31
32#include <asm/byteorder.h>
33#include <asm/irq.h>
34#include <asm/uaccess.h>
35#include <asm/io.h>
36#include <asm/div64.h>
37
Bartlomiej Zolnierkiewiczf8790482008-10-13 21:39:45 +020038#include "ide-disk.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070039
Bartlomiej Zolnierkiewiczba76ae32008-01-25 22:17:16 +010040static const u8 ide_rw_cmds[] = {
Bartlomiej Zolnierkiewiczaaaade32008-10-10 22:39:21 +020041 ATA_CMD_READ_MULTI,
42 ATA_CMD_WRITE_MULTI,
43 ATA_CMD_READ_MULTI_EXT,
44 ATA_CMD_WRITE_MULTI_EXT,
45 ATA_CMD_PIO_READ,
46 ATA_CMD_PIO_WRITE,
47 ATA_CMD_PIO_READ_EXT,
48 ATA_CMD_PIO_WRITE_EXT,
49 ATA_CMD_READ,
50 ATA_CMD_WRITE,
51 ATA_CMD_READ_EXT,
52 ATA_CMD_WRITE_EXT,
Bartlomiej Zolnierkiewiczba76ae32008-01-25 22:17:16 +010053};
54
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +010055static void ide_tf_set_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 dma)
Bartlomiej Zolnierkiewiczba76ae32008-01-25 22:17:16 +010056{
57 u8 index, lba48, write;
58
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +010059 lba48 = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 2 : 0;
60 write = (cmd->tf_flags & IDE_TFLAG_WRITE) ? 1 : 0;
Bartlomiej Zolnierkiewiczba76ae32008-01-25 22:17:16 +010061
Bartlomiej Zolnierkiewicz0dfb9912009-03-27 12:46:39 +010062 if (dma) {
63 cmd->protocol = ATA_PROT_DMA;
Bartlomiej Zolnierkiewiczba4b2e62008-07-23 19:55:55 +020064 index = 8;
Bartlomiej Zolnierkiewicz0dfb9912009-03-27 12:46:39 +010065 } else {
66 cmd->protocol = ATA_PROT_PIO;
67 if (drive->mult_count) {
68 cmd->tf_flags |= IDE_TFLAG_MULTI_PIO;
69 index = 0;
70 } else
71 index = 4;
72 }
Bartlomiej Zolnierkiewiczba76ae32008-01-25 22:17:16 +010073
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +010074 cmd->tf.command = ide_rw_cmds[index + lba48 + write];
Bartlomiej Zolnierkiewiczba76ae32008-01-25 22:17:16 +010075}
76
Linus Torvalds1da177e2005-04-16 15:20:36 -070077/*
78 * __ide_do_rw_disk() issues READ and WRITE commands to a disk,
79 * using LBA if supported, or CHS otherwise, to address sectors.
80 */
Bartlomiej Zolnierkiewicz98416542008-04-26 17:36:37 +020081static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
82 sector_t block)
Linus Torvalds1da177e2005-04-16 15:20:36 -070083{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +010084 ide_hwif_t *hwif = drive->hwif;
Tejun Heo9780e2d2009-05-07 22:24:40 +090085 u16 nsectors = (u16)blk_rq_sectors(rq);
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +020086 u8 lba48 = !!(drive->dev_flags & IDE_DFLAG_LBA48);
87 u8 dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +010088 struct ide_cmd cmd;
89 struct ide_taskfile *tf = &cmd.tf;
Bartlomiej Zolnierkiewiczf6e29e32008-01-25 22:17:16 +010090 ide_startstop_t rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -070091
Bartlomiej Zolnierkiewicz238e4f12007-10-19 00:30:07 +020092 if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && lba48 && dma) {
Tejun Heo9780e2d2009-05-07 22:24:40 +090093 if (block + blk_rq_sectors(rq) > 1ULL << 28)
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 dma = 0;
95 else
96 lba48 = 0;
97 }
98
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +010099 memset(&cmd, 0, sizeof(cmd));
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200100 cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
101 cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
Bartlomiej Zolnierkiewicz2bd06b22008-01-25 22:17:06 +0100102
Bartlomiej Zolnierkiewiczd1d76712008-10-13 21:39:38 +0200103 if (drive->dev_flags & IDE_DFLAG_LBA) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104 if (lba48) {
Michael Richardsonc2f83112006-02-07 12:58:33 -0800105 pr_debug("%s: LBA=0x%012llx\n", drive->name,
106 (unsigned long long)block);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107
Bartlomiej Zolnierkiewicz790d1232008-01-25 22:17:12 +0100108 tf->nsect = nsectors & 0xff;
Bartlomiej Zolnierkiewicz2bd06b22008-01-25 22:17:06 +0100109 tf->lbal = (u8) block;
110 tf->lbam = (u8)(block >> 8);
111 tf->lbah = (u8)(block >> 16);
Sergei Shtylyov745483f2009-04-08 14:13:02 +0200112 tf->device = ATA_LBA;
113
114 tf = &cmd.hob;
115 tf->nsect = (nsectors >> 8) & 0xff;
116 tf->lbal = (u8)(block >> 24);
117 if (sizeof(block) != 4) {
118 tf->lbam = (u8)((u64)block >> 32);
119 tf->lbah = (u8)((u64)block >> 40);
120 }
Bartlomiej Zolnierkiewicz6dd9b832008-01-26 20:13:03 +0100121
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200122 cmd.valid.out.hob = IDE_VALID_OUT_HOB;
123 cmd.valid.in.hob = IDE_VALID_IN_HOB;
124 cmd.tf_flags |= IDE_TFLAG_LBA48;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125 } else {
Bartlomiej Zolnierkiewicz790d1232008-01-25 22:17:12 +0100126 tf->nsect = nsectors & 0xff;
Bartlomiej Zolnierkiewicz2bd06b22008-01-25 22:17:06 +0100127 tf->lbal = block;
128 tf->lbam = block >>= 8;
129 tf->lbah = block >>= 8;
Sergei Shtylyov745483f2009-04-08 14:13:02 +0200130 tf->device = ((block >> 8) & 0xf) | ATA_LBA;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 }
132 } else {
Bartlomiej Zolnierkiewicz98416542008-04-26 17:36:37 +0200133 unsigned int sect, head, cyl, track;
134
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135 track = (int)block / drive->sect;
136 sect = (int)block % drive->sect + 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137 head = track % drive->head;
138 cyl = track / drive->head;
139
140 pr_debug("%s: CHS=%u/%u/%u\n", drive->name, cyl, head, sect);
141
Bartlomiej Zolnierkiewicz790d1232008-01-25 22:17:12 +0100142 tf->nsect = nsectors & 0xff;
Bartlomiej Zolnierkiewicz2bd06b22008-01-25 22:17:06 +0100143 tf->lbal = sect;
144 tf->lbam = cyl;
145 tf->lbah = cyl >> 8;
146 tf->device = head;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 }
148
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +0100149 cmd.tf_flags |= IDE_TFLAG_FS;
150
Bartlomiej Zolnierkiewiczba76ae32008-01-25 22:17:16 +0100151 if (rq_data_dir(rq))
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100152 cmd.tf_flags |= IDE_TFLAG_WRITE;
Bartlomiej Zolnierkiewiczba76ae32008-01-25 22:17:16 +0100153
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100154 ide_tf_set_cmd(drive, &cmd, dma);
155 cmd.rq = rq;
Bartlomiej Zolnierkiewiczba76ae32008-01-25 22:17:16 +0100156
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100157 if (dma == 0) {
Bartlomiej Zolnierkiewiczbf717c02009-03-27 12:46:47 +0100158 ide_init_sg_cmd(&cmd, nsectors << 9);
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100159 ide_map_sg(drive, &cmd);
160 }
161
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100162 rc = do_rw_taskfile(drive, &cmd);
Bartlomiej Zolnierkiewicz2bd06b22008-01-25 22:17:06 +0100163
Bartlomiej Zolnierkiewiczf6e29e32008-01-25 22:17:16 +0100164 if (rc == ide_stopped && dma) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165 /* fallback to PIO */
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100166 cmd.tf_flags |= IDE_TFLAG_DMA_PIO_FALLBACK;
167 ide_tf_set_cmd(drive, &cmd, 0);
Bartlomiej Zolnierkiewiczbf717c02009-03-27 12:46:47 +0100168 ide_init_sg_cmd(&cmd, nsectors << 9);
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100169 rc = do_rw_taskfile(drive, &cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170 }
171
Bartlomiej Zolnierkiewiczf6e29e32008-01-25 22:17:16 +0100172 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173}
174
175/*
176 * 268435455 == 137439 MB or 28bit limit
177 * 320173056 == 163929 MB or 48bit addressing
178 * 1073741822 == 549756 MB or 48bit addressing fake drive
179 */
180
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200181static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
182 sector_t block)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100184 ide_hwif_t *hwif = drive->hwif;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200186 BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED);
Bartlomiej Zolnierkiewicz2c7eaa42009-06-15 22:16:10 +0200187 BUG_ON(!blk_fs_request(rq));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188
Richard Purdie2bfb6462006-03-31 02:31:16 -0800189 ledtrig_ide_activity();
190
Tejun Heo9780e2d2009-05-07 22:24:40 +0900191 pr_debug("%s: %sing: block=%llu, sectors=%u, buffer=0x%08lx\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 drive->name, rq_data_dir(rq) == READ ? "read" : "writ",
Tejun Heo9780e2d2009-05-07 22:24:40 +0900193 (unsigned long long)block, blk_rq_sectors(rq),
Michael Richardsonc2f83112006-02-07 12:58:33 -0800194 (unsigned long)rq->buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195
196 if (hwif->rw_disk)
197 hwif->rw_disk(drive, rq);
198
199 return __ide_do_rw_disk(drive, rq, block);
200}
201
202/*
203 * Queries for true maximum capacity of the drive.
204 * Returns maximum LBA address (> 0) of the drive, 0 if failed.
205 */
Bartlomiej Zolnierkiewicz7a3b7512008-01-25 22:17:06 +0100206static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207{
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100208 struct ide_cmd cmd;
209 struct ide_taskfile *tf = &cmd.tf;
Bartlomiej Zolnierkiewicz7a3b7512008-01-25 22:17:06 +0100210 u64 addr = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100212 memset(&cmd, 0, sizeof(cmd));
Bartlomiej Zolnierkiewicz7a3b7512008-01-25 22:17:06 +0100213 if (lba48)
Bartlomiej Zolnierkiewiczaaaade32008-10-10 22:39:21 +0200214 tf->command = ATA_CMD_READ_NATIVE_MAX_EXT;
Bartlomiej Zolnierkiewicz7a3b7512008-01-25 22:17:06 +0100215 else
Bartlomiej Zolnierkiewiczaaaade32008-10-10 22:39:21 +0200216 tf->command = ATA_CMD_READ_NATIVE_MAX;
Bartlomiej Zolnierkiewicz650d8412008-01-25 22:17:06 +0100217 tf->device = ATA_LBA;
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100218
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200219 cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
220 cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
221 if (lba48) {
222 cmd.valid.out.hob = IDE_VALID_OUT_HOB;
223 cmd.valid.in.hob = IDE_VALID_IN_HOB;
224 cmd.tf_flags = IDE_TFLAG_LBA48;
225 }
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100226
227 ide_no_data_taskfile(drive, &cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228
229 /* if OK, compute maximum address value */
Sergei Shtylyov47ab8342009-03-31 20:15:29 +0200230 if (!(tf->status & ATA_ERR))
Sergei Shtylyov745483f2009-04-08 14:13:02 +0200231 addr = ide_get_lba_addr(&cmd, lba48) + 1;
Bartlomiej Zolnierkiewicz650d8412008-01-25 22:17:06 +0100232
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233 return addr;
234}
235
236/*
237 * Sets maximum virtual LBA address of the drive.
238 * Returns new maximum virtual LBA address (> 0) or 0 on failure.
239 */
Bartlomiej Zolnierkiewicz7a3b7512008-01-25 22:17:06 +0100240static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241{
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100242 struct ide_cmd cmd;
243 struct ide_taskfile *tf = &cmd.tf;
Bartlomiej Zolnierkiewicz7a3b7512008-01-25 22:17:06 +0100244 u64 addr_set = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245
246 addr_req--;
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100247
248 memset(&cmd, 0, sizeof(cmd));
Bartlomiej Zolnierkiewicz650d8412008-01-25 22:17:06 +0100249 tf->lbal = (addr_req >> 0) & 0xff;
250 tf->lbam = (addr_req >>= 8) & 0xff;
251 tf->lbah = (addr_req >>= 8) & 0xff;
Bartlomiej Zolnierkiewicz7a3b7512008-01-25 22:17:06 +0100252 if (lba48) {
Sergei Shtylyov745483f2009-04-08 14:13:02 +0200253 cmd.hob.lbal = (addr_req >>= 8) & 0xff;
254 cmd.hob.lbam = (addr_req >>= 8) & 0xff;
255 cmd.hob.lbah = (addr_req >>= 8) & 0xff;
Bartlomiej Zolnierkiewiczaaaade32008-10-10 22:39:21 +0200256 tf->command = ATA_CMD_SET_MAX_EXT;
Bartlomiej Zolnierkiewicz7a3b7512008-01-25 22:17:06 +0100257 } else {
258 tf->device = (addr_req >>= 8) & 0x0f;
Bartlomiej Zolnierkiewiczaaaade32008-10-10 22:39:21 +0200259 tf->command = ATA_CMD_SET_MAX;
Bartlomiej Zolnierkiewicz7a3b7512008-01-25 22:17:06 +0100260 }
261 tf->device |= ATA_LBA;
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100262
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200263 cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
264 cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
265 if (lba48) {
266 cmd.valid.out.hob = IDE_VALID_OUT_HOB;
267 cmd.valid.in.hob = IDE_VALID_IN_HOB;
268 cmd.tf_flags = IDE_TFLAG_LBA48;
269 }
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100270
271 ide_no_data_taskfile(drive, &cmd);
272
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 /* if OK, compute maximum address value */
Sergei Shtylyov47ab8342009-03-31 20:15:29 +0200274 if (!(tf->status & ATA_ERR))
Sergei Shtylyov745483f2009-04-08 14:13:02 +0200275 addr_set = ide_get_lba_addr(&cmd, lba48) + 1;
Bartlomiej Zolnierkiewicz650d8412008-01-25 22:17:06 +0100276
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277 return addr_set;
278}
279
280static unsigned long long sectors_to_MB(unsigned long long n)
281{
282 n <<= 9; /* make it bytes */
283 do_div(n, 1000000); /* make it MB */
284 return n;
285}
286
287/*
Bartlomiej Zolnierkiewiczb0244a02007-08-20 22:42:57 +0200288 * Some disks report total number of sectors instead of
289 * maximum sector address. We list them here.
290 */
291static const struct drive_list_entry hpa_list[] = {
292 { "ST340823A", NULL },
Jorge Juan Chico7062cdc2007-09-17 12:35:30 +0200293 { "ST320413A", NULL },
Mikko Rapelib152fcd2008-02-19 01:41:25 +0100294 { "ST310211A", NULL },
Bartlomiej Zolnierkiewiczb0244a02007-08-20 22:42:57 +0200295 { NULL, NULL }
296};
297
Bartlomiej Zolnierkiewicze957b602009-06-07 13:52:52 +0200298static u64 ide_disk_hpa_get_native_capacity(ide_drive_t *drive, int lba48)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299{
Bartlomiej Zolnierkiewicze957b602009-06-07 13:52:52 +0200300 u64 capacity, set_max;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301
302 capacity = drive->capacity64;
Bartlomiej Zolnierkiewicze957b602009-06-07 13:52:52 +0200303 set_max = idedisk_read_native_max_address(drive, lba48);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304
Bartlomiej Zolnierkiewiczb0244a02007-08-20 22:42:57 +0200305 if (ide_in_drive_list(drive->id, hpa_list)) {
306 /*
307 * Since we are inclusive wrt to firmware revisions do this
308 * extra check and apply the workaround only when needed.
309 */
310 if (set_max == capacity + 1)
311 set_max--;
312 }
313
Bartlomiej Zolnierkiewicze957b602009-06-07 13:52:52 +0200314 return set_max;
315}
316
317static u64 ide_disk_hpa_set_capacity(ide_drive_t *drive, u64 set_max, int lba48)
318{
319 set_max = idedisk_set_max_address(drive, set_max, lba48);
320 if (set_max)
321 drive->capacity64 = set_max;
322
323 return set_max;
324}
325
326static void idedisk_check_hpa(ide_drive_t *drive)
327{
328 u64 capacity, set_max;
329 int lba48 = ata_id_lba48_enabled(drive->id);
330
331 capacity = drive->capacity64;
332 set_max = ide_disk_hpa_get_native_capacity(drive, lba48);
333
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 if (set_max <= capacity)
335 return;
336
Bartlomiej Zolnierkiewicze957b602009-06-07 13:52:52 +0200337 drive->probed_capacity = set_max;
338
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339 printk(KERN_INFO "%s: Host Protected Area detected.\n"
340 "\tcurrent capacity is %llu sectors (%llu MB)\n"
341 "\tnative capacity is %llu sectors (%llu MB)\n",
342 drive->name,
343 capacity, sectors_to_MB(capacity),
344 set_max, sectors_to_MB(set_max));
345
Bartlomiej Zolnierkiewicz075affc2009-06-07 13:52:52 +0200346 if ((drive->dev_flags & IDE_DFLAG_NOHPA) == 0)
347 return;
Bartlomiej Zolnierkiewicz7a3b7512008-01-25 22:17:06 +0100348
Bartlomiej Zolnierkiewicze957b602009-06-07 13:52:52 +0200349 set_max = ide_disk_hpa_set_capacity(drive, set_max, lba48);
350 if (set_max)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 printk(KERN_INFO "%s: Host Protected Area disabled.\n",
352 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353}
354
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200355static int ide_disk_get_capacity(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356{
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200357 u16 *id = drive->id;
Bartlomiej Zolnierkiewiczd1d76712008-10-13 21:39:38 +0200358 int lba;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359
Bartlomiej Zolnierkiewicz942dcd82008-10-10 22:39:30 +0200360 if (ata_id_lba48_enabled(id)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 /* drive speaks 48-bit LBA */
Bartlomiej Zolnierkiewiczd1d76712008-10-13 21:39:38 +0200362 lba = 1;
Bartlomiej Zolnierkiewicz48fb2682008-10-10 22:39:19 +0200363 drive->capacity64 = ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
Bartlomiej Zolnierkiewicza02227c2008-10-10 22:39:31 +0200364 } else if (ata_id_has_lba(id) && ata_id_is_lba_capacity_ok(id)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 /* drive speaks 28-bit LBA */
Bartlomiej Zolnierkiewiczd1d76712008-10-13 21:39:38 +0200366 lba = 1;
Bartlomiej Zolnierkiewicz48fb2682008-10-10 22:39:19 +0200367 drive->capacity64 = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368 } else {
369 /* drive speaks boring old 28-bit CHS */
Bartlomiej Zolnierkiewiczd1d76712008-10-13 21:39:38 +0200370 lba = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 drive->capacity64 = drive->cyl * drive->head * drive->sect;
372 }
Bartlomiej Zolnierkiewiczd1d76712008-10-13 21:39:38 +0200373
Bartlomiej Zolnierkiewicze957b602009-06-07 13:52:52 +0200374 drive->probed_capacity = drive->capacity64;
375
Bartlomiej Zolnierkiewiczd1d76712008-10-13 21:39:38 +0200376 if (lba) {
377 drive->dev_flags |= IDE_DFLAG_LBA;
378
379 /*
380 * If this device supports the Host Protected Area feature set,
381 * then we may need to change our opinion about its capacity.
382 */
383 if (ata_id_hpa_enabled(id))
384 idedisk_check_hpa(drive);
385 }
Bartlomiej Zolnierkiewicz0a70c7f2008-10-17 18:09:09 +0200386
387 /* limit drive capacity to 137GB if LBA48 cannot be used */
388 if ((drive->dev_flags & IDE_DFLAG_LBA48) == 0 &&
389 drive->capacity64 > 1ULL << 28) {
390 printk(KERN_WARNING "%s: cannot use LBA48 - full capacity "
391 "%llu sectors (%llu MB)\n",
392 drive->name, (unsigned long long)drive->capacity64,
393 sectors_to_MB(drive->capacity64));
Bartlomiej Zolnierkiewicze957b602009-06-07 13:52:52 +0200394 drive->probed_capacity = drive->capacity64 = 1ULL << 28;
Bartlomiej Zolnierkiewicz0a70c7f2008-10-17 18:09:09 +0200395 }
396
397 if ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) &&
398 (drive->dev_flags & IDE_DFLAG_LBA48)) {
399 if (drive->capacity64 > 1ULL << 28) {
400 printk(KERN_INFO "%s: cannot use LBA48 DMA - PIO mode"
401 " will be used for accessing sectors "
402 "> %u\n", drive->name, 1 << 28);
403 } else
404 drive->dev_flags &= ~IDE_DFLAG_LBA48;
405 }
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200406
407 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408}
409
Bartlomiej Zolnierkiewicze957b602009-06-07 13:52:52 +0200410static u64 ide_disk_set_capacity(ide_drive_t *drive, u64 capacity)
411{
412 u64 set = min(capacity, drive->probed_capacity);
413 u16 *id = drive->id;
414 int lba48 = ata_id_lba48_enabled(id);
415
416 if ((drive->dev_flags & IDE_DFLAG_LBA) == 0 ||
417 ata_id_hpa_enabled(id) == 0)
418 goto out;
419
420 /*
421 * according to the spec the SET MAX ADDRESS command shall be
422 * immediately preceded by a READ NATIVE MAX ADDRESS command
423 */
424 capacity = ide_disk_hpa_get_native_capacity(drive, lba48);
425 if (capacity == 0)
426 goto out;
427
428 set = ide_disk_hpa_set_capacity(drive, set, lba48);
Bartlomiej Zolnierkiewicz075affc2009-06-07 13:52:52 +0200429 if (set) {
430 /* needed for ->resume to disable HPA */
431 drive->dev_flags |= IDE_DFLAG_NOHPA;
Bartlomiej Zolnierkiewicze957b602009-06-07 13:52:52 +0200432 return set;
Bartlomiej Zolnierkiewicz075affc2009-06-07 13:52:52 +0200433 }
Bartlomiej Zolnierkiewicze957b602009-06-07 13:52:52 +0200434out:
435 return drive->capacity64;
436}
437
Jens Axboe165125e2007-07-24 09:28:11 +0200438static void idedisk_prepare_flush(struct request_queue *q, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439{
440 ide_drive_t *drive = q->queuedata;
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100441 struct ide_cmd *cmd = kmalloc(sizeof(*cmd), GFP_ATOMIC);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442
Bartlomiej Zolnierkiewicz395d8ef2008-02-11 00:32:14 +0100443 /* FIXME: map struct ide_taskfile on rq->cmd[] */
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100444 BUG_ON(cmd == NULL);
Bartlomiej Zolnierkiewicz395d8ef2008-02-11 00:32:14 +0100445
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100446 memset(cmd, 0, sizeof(*cmd));
Bartlomiej Zolnierkiewiczff2779b2008-10-10 22:39:31 +0200447 if (ata_id_flush_ext_enabled(drive->id) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 (drive->capacity64 >= (1UL << 28)))
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100449 cmd->tf.command = ATA_CMD_FLUSH_EXT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 else
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100451 cmd->tf.command = ATA_CMD_FLUSH;
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200452 cmd->valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
453 cmd->tf_flags = IDE_TFLAG_DYN;
Bartlomiej Zolnierkiewicz0dfb9912009-03-27 12:46:39 +0100454 cmd->protocol = ATA_PROT_NODATA;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455
Bartlomiej Zolnierkiewicz813a0eb2008-01-25 22:17:10 +0100456 rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100457 rq->special = cmd;
Maxime Bizonbc146d22009-07-16 06:32:52 +0000458 cmd->rq = rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459}
460
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200461ide_devset_get(multcount, mult_count);
462
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463/*
464 * This is tightly woven into the driver->do_special can not touch.
465 * DON'T do it again until a total personality rewrite is committed.
466 */
467static int set_multcount(ide_drive_t *drive, int arg)
468{
FUJITA Tomonoridd470872008-07-15 21:21:43 +0200469 struct request *rq;
470 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471
Bartlomiej Zolnierkiewicz48fb2682008-10-10 22:39:19 +0200472 if (arg < 0 || arg > (drive->id[ATA_ID_MAX_MULTSECT] & 0xff))
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200473 return -EINVAL;
474
Bartlomiej Zolnierkiewiczca1b96e2009-05-17 19:12:21 +0200475 if (drive->special_flags & IDE_SFLAG_SET_MULTMODE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476 return -EBUSY;
Bartlomiej Zolnierkiewicz852738f2008-01-26 20:13:12 +0100477
FUJITA Tomonoridd470872008-07-15 21:21:43 +0200478 rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
479 rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
Bartlomiej Zolnierkiewicz852738f2008-01-26 20:13:12 +0100480
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 drive->mult_req = arg;
Bartlomiej Zolnierkiewiczca1b96e2009-05-17 19:12:21 +0200482 drive->special_flags |= IDE_SFLAG_SET_MULTMODE;
FUJITA Tomonoridd470872008-07-15 21:21:43 +0200483 error = blk_execute_rq(drive->queue, NULL, rq, 0);
484 blk_put_request(rq);
Bartlomiej Zolnierkiewicz98416542008-04-26 17:36:37 +0200485
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 return (drive->mult_count == arg) ? 0 : -EIO;
487}
488
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200489ide_devset_get_flag(nowerr, IDE_DFLAG_NOWERR);
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200490
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491static int set_nowerr(ide_drive_t *drive, int arg)
492{
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200493 if (arg < 0 || arg > 1)
494 return -EINVAL;
495
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200496 if (arg)
497 drive->dev_flags |= IDE_DFLAG_NOWERR;
498 else
499 drive->dev_flags &= ~IDE_DFLAG_NOWERR;
500
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT;
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200502
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 return 0;
504}
505
Bartlomiej Zolnierkiewiczbe3c0962008-10-13 21:39:36 +0200506static int ide_do_setfeature(ide_drive_t *drive, u8 feature, u8 nsect)
507{
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100508 struct ide_cmd cmd;
Bartlomiej Zolnierkiewiczbe3c0962008-10-13 21:39:36 +0200509
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100510 memset(&cmd, 0, sizeof(cmd));
511 cmd.tf.feature = feature;
512 cmd.tf.nsect = nsect;
513 cmd.tf.command = ATA_CMD_SET_FEATURES;
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200514 cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
515 cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
Bartlomiej Zolnierkiewiczbe3c0962008-10-13 21:39:36 +0200516
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100517 return ide_no_data_taskfile(drive, &cmd);
Bartlomiej Zolnierkiewiczbe3c0962008-10-13 21:39:36 +0200518}
519
Tejun Heo3e087b52006-01-06 09:57:31 +0100520static void update_ordered(ide_drive_t *drive)
521{
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200522 u16 *id = drive->id;
Tejun Heo3e087b52006-01-06 09:57:31 +0100523 unsigned ordered = QUEUE_ORDERED_NONE;
524 prepare_flush_fn *prep_fn = NULL;
Tejun Heo3e087b52006-01-06 09:57:31 +0100525
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200526 if (drive->dev_flags & IDE_DFLAG_WCACHE) {
Tejun Heo3e087b52006-01-06 09:57:31 +0100527 unsigned long long capacity;
528 int barrier;
529 /*
530 * We must avoid issuing commands a drive does not
531 * understand or we may crash it. We check flush cache
532 * is supported. We also check we have the LBA48 flush
533 * cache if the drive capacity is too large. By this
534 * time we have trimmed the drive capacity if LBA48 is
535 * not available so we don't need to recheck that.
536 */
Bartlomiej Zolnierkiewicz5fef0e52008-10-17 18:09:12 +0200537 capacity = ide_gd_capacity(drive);
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200538 barrier = ata_id_flush_enabled(id) &&
539 (drive->dev_flags & IDE_DFLAG_NOFLUSH) == 0 &&
540 ((drive->dev_flags & IDE_DFLAG_LBA48) == 0 ||
541 capacity <= (1ULL << 28) ||
Bartlomiej Zolnierkiewiczff2779b2008-10-10 22:39:31 +0200542 ata_id_flush_ext_enabled(id));
Tejun Heo3e087b52006-01-06 09:57:31 +0100543
544 printk(KERN_INFO "%s: cache flushes %ssupported\n",
Jean Delvaref7ad8362006-02-03 03:04:57 -0800545 drive->name, barrier ? "" : "not ");
Tejun Heo3e087b52006-01-06 09:57:31 +0100546
547 if (barrier) {
548 ordered = QUEUE_ORDERED_DRAIN_FLUSH;
549 prep_fn = idedisk_prepare_flush;
Tejun Heo3e087b52006-01-06 09:57:31 +0100550 }
551 } else
552 ordered = QUEUE_ORDERED_DRAIN;
553
554 blk_queue_ordered(drive->queue, ordered, prep_fn);
Tejun Heo3e087b52006-01-06 09:57:31 +0100555}
556
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200557ide_devset_get_flag(wcache, IDE_DFLAG_WCACHE);
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200558
559static int set_wcache(ide_drive_t *drive, int arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560{
Tejun Heo3e087b52006-01-06 09:57:31 +0100561 int err = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200563 if (arg < 0 || arg > 1)
564 return -EINVAL;
565
Bartlomiej Zolnierkiewicz4b58f172008-10-10 22:39:30 +0200566 if (ata_id_flush_enabled(drive->id)) {
Bartlomiej Zolnierkiewiczbe3c0962008-10-13 21:39:36 +0200567 err = ide_do_setfeature(drive,
568 arg ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF, 0);
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200569 if (err == 0) {
570 if (arg)
571 drive->dev_flags |= IDE_DFLAG_WCACHE;
572 else
573 drive->dev_flags &= ~IDE_DFLAG_WCACHE;
574 }
Tejun Heo3e087b52006-01-06 09:57:31 +0100575 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576
Tejun Heo3e087b52006-01-06 09:57:31 +0100577 update_ordered(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578
Tejun Heo3e087b52006-01-06 09:57:31 +0100579 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580}
581
Bartlomiej Zolnierkiewicz98416542008-04-26 17:36:37 +0200582static int do_idedisk_flushcache(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583{
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100584 struct ide_cmd cmd;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100586 memset(&cmd, 0, sizeof(cmd));
Bartlomiej Zolnierkiewiczff2779b2008-10-10 22:39:31 +0200587 if (ata_id_flush_ext_enabled(drive->id))
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100588 cmd.tf.command = ATA_CMD_FLUSH_EXT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589 else
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100590 cmd.tf.command = ATA_CMD_FLUSH;
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200591 cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
592 cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100593
594 return ide_no_data_taskfile(drive, &cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595}
596
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200597ide_devset_get(acoustic, acoustic);
598
Bartlomiej Zolnierkiewicz98416542008-04-26 17:36:37 +0200599static int set_acoustic(ide_drive_t *drive, int arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600{
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200601 if (arg < 0 || arg > 254)
602 return -EINVAL;
603
Bartlomiej Zolnierkiewiczbe3c0962008-10-13 21:39:36 +0200604 ide_do_setfeature(drive,
605 arg ? SETFEATURES_AAM_ON : SETFEATURES_AAM_OFF, arg);
606
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607 drive->acoustic = arg;
Bartlomiej Zolnierkiewiczbe3c0962008-10-13 21:39:36 +0200608
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609 return 0;
610}
611
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200612ide_devset_get_flag(addressing, IDE_DFLAG_LBA48);
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200613
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614/*
615 * drive->addressing:
616 * 0: 28-bit
617 * 1: 48-bit
618 * 2: 48-bit capable doing 28-bit
619 */
Bartlomiej Zolnierkiewiczaa7687732008-10-10 22:39:33 +0200620static int set_addressing(ide_drive_t *drive, int arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621{
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200622 if (arg < 0 || arg > 2)
623 return -EINVAL;
624
Bartlomiej Zolnierkiewicz35c13752008-10-13 21:39:36 +0200625 if (arg && ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48) ||
626 ata_id_lba48_enabled(drive->id) == 0))
Bartlomiej Zolnierkiewicz98416542008-04-26 17:36:37 +0200627 return -EIO;
Bartlomiej Zolnierkiewicz942dcd82008-10-10 22:39:30 +0200628
Bartlomiej Zolnierkiewicz35c13752008-10-13 21:39:36 +0200629 if (arg == 2)
630 arg = 0;
631
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200632 if (arg)
633 drive->dev_flags |= IDE_DFLAG_LBA48;
634 else
635 drive->dev_flags &= ~IDE_DFLAG_LBA48;
Bartlomiej Zolnierkiewicz942dcd82008-10-10 22:39:30 +0200636
Linus Torvalds1da177e2005-04-16 15:20:36 -0700637 return 0;
638}
639
Bartlomiej Zolnierkiewiczf8790482008-10-13 21:39:45 +0200640ide_ext_devset_rw(acoustic, acoustic);
641ide_ext_devset_rw(address, addressing);
642ide_ext_devset_rw(multcount, multcount);
643ide_ext_devset_rw(wcache, wcache);
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200644
Bartlomiej Zolnierkiewiczf8790482008-10-13 21:39:45 +0200645ide_ext_devset_rw_sync(nowerr, nowerr);
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200646
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200647static int ide_disk_check(ide_drive_t *drive, const char *s)
648{
649 return 1;
650}
651
652static void ide_disk_setup(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653{
Bartlomiej Zolnierkiewicz1e874f42008-10-10 22:39:27 +0200654 struct ide_disk_obj *idkp = drive->driver_data;
Bartlomiej Zolnierkiewiczc77380d2008-10-23 23:22:09 +0200655 struct request_queue *q = drive->queue;
Bartlomiej Zolnierkiewicz238e4f12007-10-19 00:30:07 +0200656 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200657 u16 *id = drive->id;
658 char *m = (char *)&id[ATA_ID_PROD];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659 unsigned long long capacity;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660
Bartlomiej Zolnierkiewicz1e874f42008-10-10 22:39:27 +0200661 ide_proc_register_driver(drive, idkp->driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200663 if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664 return;
665
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200666 if (drive->dev_flags & IDE_DFLAG_REMOVABLE) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667 /*
Bartlomiej Zolnierkiewicz98416542008-04-26 17:36:37 +0200668 * Removable disks (eg. SYQUEST); ignore 'WD' drives
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669 */
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200670 if (m[0] != 'W' || m[1] != 'D')
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200671 drive->dev_flags |= IDE_DFLAG_DOORLOCKING;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672 }
673
Bartlomiej Zolnierkiewiczaa7687732008-10-10 22:39:33 +0200674 (void)set_addressing(drive, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200676 if (drive->dev_flags & IDE_DFLAG_LBA48) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 int max_s = 2048;
678
679 if (max_s > hwif->rqsize)
680 max_s = hwif->rqsize;
681
Martin K. Petersen086fa5f2010-02-26 00:20:38 -0500682 blk_queue_max_hw_sectors(q, max_s);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683 }
684
Bartlomiej Zolnierkiewicz98416542008-04-26 17:36:37 +0200685 printk(KERN_INFO "%s: max request size: %dKiB\n", drive->name,
Martin K. Petersen3b77f772009-05-23 08:23:16 +0200686 queue_max_sectors(q) / 2);
Bartlomiej Zolnierkiewiczc77380d2008-10-23 23:22:09 +0200687
Bartlomiej Zolnierkiewicz655772c2009-01-14 19:19:03 +0100688 if (ata_id_is_ssd(id))
Bartlomiej Zolnierkiewiczc77380d2008-10-23 23:22:09 +0200689 queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690
691 /* calculate drive capacity, and select LBA if possible */
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200692 ide_disk_get_capacity(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700693
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 /*
695 * if possible, give fdisk access to more of the drive,
696 * by correcting bios_cyls:
697 */
Bartlomiej Zolnierkiewicz5fef0e52008-10-17 18:09:12 +0200698 capacity = ide_gd_capacity(drive);
Bartlomiej Zolnierkiewicz98416542008-04-26 17:36:37 +0200699
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200700 if ((drive->dev_flags & IDE_DFLAG_FORCED_GEOM) == 0) {
Bartlomiej Zolnierkiewicz942dcd82008-10-10 22:39:30 +0200701 if (ata_id_lba48_enabled(drive->id)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700702 /* compatibility */
703 drive->bios_sect = 63;
704 drive->bios_head = 255;
705 }
706
707 if (drive->bios_sect && drive->bios_head) {
708 unsigned int cap0 = capacity; /* truncate to 32 bits */
709 unsigned int cylsz, cyl;
710
711 if (cap0 != capacity)
712 drive->bios_cyl = 65535;
713 else {
714 cylsz = drive->bios_sect * drive->bios_head;
715 cyl = cap0 / cylsz;
716 if (cyl > 65535)
717 cyl = 65535;
718 if (cyl > drive->bios_cyl)
719 drive->bios_cyl = cyl;
720 }
721 }
722 }
723 printk(KERN_INFO "%s: %llu sectors (%llu MB)",
724 drive->name, capacity, sectors_to_MB(capacity));
725
726 /* Only print cache size when it was specified */
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200727 if (id[ATA_ID_BUF_SIZE])
728 printk(KERN_CONT " w/%dKiB Cache", id[ATA_ID_BUF_SIZE] / 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +0100730 printk(KERN_CONT ", CHS=%d/%d/%d\n",
731 drive->bios_cyl, drive->bios_head, drive->bios_sect);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733 /* write cache enabled? */
Bartlomiej Zolnierkiewicz8a089c62008-10-10 22:39:20 +0200734 if ((id[ATA_ID_CSFO] & 1) || ata_id_wcache_enabled(id))
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200735 drive->dev_flags |= IDE_DFLAG_WCACHE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200737 set_wcache(drive, 1);
Bartlomiej Zolnierkiewiczae9f9f02008-10-17 18:09:10 +0200738
739 if ((drive->dev_flags & IDE_DFLAG_LBA) == 0 &&
740 (drive->head == 0 || drive->head > 16)) {
741 printk(KERN_ERR "%s: invalid geometry: %d physical heads?\n",
742 drive->name, drive->head);
743 drive->dev_flags &= ~IDE_DFLAG_ATTACH;
744 } else
745 drive->dev_flags |= IDE_DFLAG_ATTACH;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746}
747
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200748static void ide_disk_flush(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749{
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200750 if (ata_id_flush_enabled(drive->id) == 0 ||
751 (drive->dev_flags & IDE_DFLAG_WCACHE) == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752 return;
753
754 if (do_idedisk_flushcache(drive))
755 printk(KERN_INFO "%s: wcache flush failed!\n", drive->name);
756}
757
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200758static int ide_disk_init_media(ide_drive_t *drive, struct gendisk *disk)
759{
760 return 0;
761}
762
763static int ide_disk_set_doorlock(ide_drive_t *drive, struct gendisk *disk,
764 int on)
Bartlomiej Zolnierkiewicz29ec6832008-01-26 20:12:59 +0100765{
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100766 struct ide_cmd cmd;
Bartlomiej Zolnierkiewicz81ee1bb2008-10-17 18:09:10 +0200767 int ret;
768
769 if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0)
770 return 0;
Bartlomiej Zolnierkiewicz29ec6832008-01-26 20:12:59 +0100771
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100772 memset(&cmd, 0, sizeof(cmd));
773 cmd.tf.command = on ? ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK;
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200774 cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
775 cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
Bartlomiej Zolnierkiewicz29ec6832008-01-26 20:12:59 +0100776
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100777 ret = ide_no_data_taskfile(drive, &cmd);
Bartlomiej Zolnierkiewicz81ee1bb2008-10-17 18:09:10 +0200778
779 if (ret)
780 drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
781
782 return ret;
Bartlomiej Zolnierkiewicz29ec6832008-01-26 20:12:59 +0100783}
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200784
785const struct ide_disk_ops ide_ata_disk_ops = {
786 .check = ide_disk_check,
Bartlomiej Zolnierkiewicze957b602009-06-07 13:52:52 +0200787 .set_capacity = ide_disk_set_capacity,
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200788 .get_capacity = ide_disk_get_capacity,
789 .setup = ide_disk_setup,
790 .flush = ide_disk_flush,
791 .init_media = ide_disk_init_media,
792 .set_doorlock = ide_disk_set_doorlock,
793 .do_request = ide_do_rw_disk,
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200794 .ioctl = ide_disk_ioctl,
795};