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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Bartlomiej Zolnierkiewicz59bca8c2008-02-01 23:09:33 +01002 * Copyright (C) 2000-2002 Michael Cornwell <cornwell@acm.org>
3 * Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org>
4 * Copyright (C) 2001-2002 Klaus Smolin
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 * IBM Storage Technology Division
Bartlomiej Zolnierkiewicz59bca8c2008-02-01 23:09:33 +01006 * Copyright (C) 2003-2004, 2007 Bartlomiej Zolnierkiewicz
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 *
8 * The big the bad and the ugly.
Linus Torvalds1da177e2005-04-16 15:20:36 -07009 */
10
Linus Torvalds1da177e2005-04-16 15:20:36 -070011#include <linux/types.h>
12#include <linux/string.h>
13#include <linux/kernel.h>
Paul Gortmaker38789fd2011-07-17 15:33:58 -040014#include <linux/export.h>
Andrew Morton651c29a2006-02-15 15:17:37 -080015#include <linux/sched.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#include <linux/interrupt.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070017#include <linux/errno.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019#include <linux/delay.h>
20#include <linux/hdreg.h>
21#include <linux/ide.h>
Jens Axboe55c16a72007-07-25 08:13:56 +020022#include <linux/scatterlist.h>
Jaswinder Singh Rajput2d5abce2009-08-02 20:17:34 -070023#include <linux/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070024
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#include <asm/io.h>
26
Sergei Shtylyov3153c262009-04-08 14:13:03 +020027void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd)
28{
29 ide_hwif_t *hwif = drive->hwif;
30 const struct ide_tp_ops *tp_ops = hwif->tp_ops;
31
32 /* Be sure we're looking at the low order bytes */
33 tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);
34
35 tp_ops->tf_read(drive, &cmd->tf, cmd->valid.in.tf);
36
37 if (cmd->tf_flags & IDE_TFLAG_LBA48) {
38 tp_ops->write_devctl(hwif, ATA_HOB | ATA_DEVCTL_OBS);
39
40 tp_ops->tf_read(drive, &cmd->hob, cmd->valid.in.hob);
41 }
42}
43
Sergei Shtylyov745483f2009-04-08 14:13:02 +020044void ide_tf_dump(const char *s, struct ide_cmd *cmd)
Bartlomiej Zolnierkiewicz089c5c72008-04-28 23:44:39 +020045{
46#ifdef DEBUG
47 printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x "
48 "lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n",
Sergei Shtylyov745483f2009-04-08 14:13:02 +020049 s, cmd->tf.feature, cmd->tf.nsect,
50 cmd->tf.lbal, cmd->tf.lbam, cmd->tf.lbah,
51 cmd->tf.device, cmd->tf.command);
52 printk("%s: hob: nsect 0x%02x lbal 0x%02x lbam 0x%02x lbah 0x%02x\n",
53 s, cmd->hob.nsect, cmd->hob.lbal, cmd->hob.lbam, cmd->hob.lbah);
Bartlomiej Zolnierkiewicz089c5c72008-04-28 23:44:39 +020054#endif
55}
56
Jaswinder Singh Rajput2d5abce2009-08-02 20:17:34 -070057int taskfile_lib_get_identify(ide_drive_t *drive, u8 *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -070058{
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +010059 struct ide_cmd cmd;
Bartlomiej Zolnierkiewicz650d8412008-01-25 22:17:06 +010060
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +010061 memset(&cmd, 0, sizeof(cmd));
62 cmd.tf.nsect = 0x01;
Linus Torvalds1da177e2005-04-16 15:20:36 -070063 if (drive->media == ide_disk)
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +010064 cmd.tf.command = ATA_CMD_ID_ATA;
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 else
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +010066 cmd.tf.command = ATA_CMD_ID_ATAPI;
Sergei Shtylyov60f85012009-04-08 14:13:01 +020067 cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
68 cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
Bartlomiej Zolnierkiewicz0dfb9912009-03-27 12:46:39 +010069 cmd.protocol = ATA_PROT_PIO;
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +010070
71 return ide_raw_taskfile(drive, &cmd, buf, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -070072}
73
Bartlomiej Zolnierkiewicz1192e522008-01-25 22:17:16 +010074static ide_startstop_t task_no_data_intr(ide_drive_t *);
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +010075static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct ide_cmd *);
Bartlomiej Zolnierkiewicz901bd082009-03-27 12:46:39 +010076static ide_startstop_t task_pio_intr(ide_drive_t *);
Bartlomiej Zolnierkiewicz1192e522008-01-25 22:17:16 +010077
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +010078ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -070079{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +010080 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +010081 struct ide_cmd *cmd = &hwif->cmd;
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +010082 struct ide_taskfile *tf = &cmd->tf;
Bartlomiej Zolnierkiewicz57d73662008-01-25 22:17:16 +010083 ide_handler_t *handler = NULL;
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +020084 const struct ide_tp_ops *tp_ops = hwif->tp_ops;
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +020085 const struct ide_dma_ops *dma_ops = hwif->dma_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
Bartlomiej Zolnierkiewicz0dfb9912009-03-27 12:46:39 +010087 if (orig_cmd->protocol == ATA_PROT_PIO &&
88 (orig_cmd->tf_flags & IDE_TFLAG_MULTI_PIO) &&
89 drive->mult_count == 0) {
Jaswinder Singh Rajput2d5abce2009-08-02 20:17:34 -070090 pr_err("%s: multimode not set!\n", drive->name);
Bartlomiej Zolnierkiewicz0dfb9912009-03-27 12:46:39 +010091 return ide_stopped;
Bartlomiej Zolnierkiewicz1edee602008-01-25 22:17:15 +010092 }
93
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +010094 if (orig_cmd->ftf_flags & IDE_FTFLAG_FLAGGED)
95 orig_cmd->ftf_flags |= IDE_FTFLAG_SET_IN_FLAGS;
Bartlomiej Zolnierkiewicz1edee602008-01-25 22:17:15 +010096
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +010097 memcpy(cmd, orig_cmd, sizeof(*cmd));
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +020098
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +010099 if ((cmd->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) {
Sergei Shtylyov745483f2009-04-08 14:13:02 +0200100 ide_tf_dump(drive->name, cmd);
Sergei Shtylyovecf3a312009-03-31 20:15:30 +0200101 tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);
Sergei Shtylyov35218d12009-03-31 20:15:31 +0200102
103 if (cmd->ftf_flags & IDE_FTFLAG_OUT_DATA) {
Sergei Shtylyov745483f2009-04-08 14:13:02 +0200104 u8 data[2] = { cmd->tf.data, cmd->hob.data };
Sergei Shtylyov35218d12009-03-31 20:15:31 +0200105
106 tp_ops->output_data(drive, cmd, data, 2);
107 }
Sergei Shtylyov4109d192009-04-08 14:13:02 +0200108
109 if (cmd->valid.out.tf & IDE_VALID_DEVICE) {
110 u8 HIHI = (cmd->tf_flags & IDE_TFLAG_LBA48) ?
111 0xE0 : 0xEF;
112
113 if (!(cmd->ftf_flags & IDE_FTFLAG_FLAGGED))
114 cmd->tf.device &= HIHI;
115 cmd->tf.device |= drive->select;
116 }
117
Sergei Shtylyovc9ff9e72009-04-08 14:13:03 +0200118 tp_ops->tf_load(drive, &cmd->hob, cmd->valid.out.hob);
119 tp_ops->tf_load(drive, &cmd->tf, cmd->valid.out.tf);
Bartlomiej Zolnierkiewicz089c5c72008-04-28 23:44:39 +0200120 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121
Bartlomiej Zolnierkiewicz0dfb9912009-03-27 12:46:39 +0100122 switch (cmd->protocol) {
123 case ATA_PROT_PIO:
124 if (cmd->tf_flags & IDE_TFLAG_WRITE) {
125 tp_ops->exec_command(hwif, tf->command);
126 ndelay(400); /* FIXME */
127 return pre_task_out_intr(drive, cmd);
128 }
Bartlomiej Zolnierkiewicz901bd082009-03-27 12:46:39 +0100129 handler = task_pio_intr;
Bartlomiej Zolnierkiewicz1192e522008-01-25 22:17:16 +0100130 /* fall-through */
Bartlomiej Zolnierkiewicz0dfb9912009-03-27 12:46:39 +0100131 case ATA_PROT_NODATA:
Bartlomiej Zolnierkiewicz57d73662008-01-25 22:17:16 +0100132 if (handler == NULL)
133 handler = task_no_data_intr;
Bartlomiej Zolnierkiewicz35b5d0b2009-03-27 12:46:47 +0100134 ide_execute_command(drive, cmd, handler, WAIT_WORSTCASE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135 return ide_started;
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100136 case ATA_PROT_DMA:
Bartlomiej Zolnierkiewicz5ae54122009-03-31 20:15:20 +0200137 if (ide_dma_prepare(drive, cmd))
Bartlomiej Zolnierkiewicz10d90152008-01-25 22:17:16 +0100138 return ide_stopped;
Bartlomiej Zolnierkiewicz22117d62009-03-27 12:46:47 +0100139 hwif->expiry = dma_ops->dma_timer_expiry;
Bartlomiej Zolnierkiewicz35b5d0b2009-03-27 12:46:47 +0100140 ide_execute_command(drive, cmd, ide_dma_intr, 2 * WAIT_CMD);
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200141 dma_ops->dma_start(drive);
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100142 default:
Bartlomiej Zolnierkiewicz74095a92008-01-25 22:17:07 +0100143 return ide_started;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145}
Bartlomiej Zolnierkiewiczf6e29e32008-01-25 22:17:16 +0100146EXPORT_SYMBOL_GPL(do_rw_taskfile);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200148static ide_startstop_t task_no_data_intr(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149{
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +0200150 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100151 struct ide_cmd *cmd = &hwif->cmd;
152 struct ide_taskfile *tf = &cmd->tf;
153 int custom = (cmd->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) ? 1 : 0;
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200154 int retries = (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) ? 5 : 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155 u8 stat;
156
Bartlomiej Zolnierkiewicz90d2c6b2008-07-24 22:53:36 +0200157 local_irq_enable_in_hardirq();
158
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200159 while (1) {
160 stat = hwif->tp_ops->read_status(hwif);
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +0200161 if ((stat & ATA_BUSY) == 0 || retries-- == 0)
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200162 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163 udelay(10);
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200164 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200166 if (!OK_STAT(stat, ATA_DRDY, BAD_STAT)) {
167 if (custom && tf->command == ATA_CMD_SET_MULTI) {
168 drive->mult_req = drive->mult_count = 0;
Bartlomiej Zolnierkiewiczca1b96e2009-05-17 19:12:21 +0200169 drive->special_flags |= IDE_SFLAG_RECALIBRATE;
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200170 (void)ide_dump_status(drive, __func__, stat);
171 return ide_stopped;
172 } else if (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) {
173 if ((stat & (ATA_ERR | ATA_DRQ)) == 0) {
174 ide_set_handler(drive, &task_no_data_intr,
Bartlomiej Zolnierkiewicz60c0cd02009-03-27 12:46:46 +0100175 WAIT_WORSTCASE);
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200176 return ide_started;
177 }
178 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179 return ide_error(drive, "task_no_data_intr", stat);
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200180 }
Bartlomiej Zolnierkiewiczc47137a2008-02-06 02:57:51 +0100181
Bartlomiej Zolnierkiewicze7fedc32009-03-27 12:46:41 +0100182 if (custom && tf->command == ATA_CMD_SET_MULTI)
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200183 drive->mult_count = drive->mult_req;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184
Bartlomiej Zolnierkiewiczd364c7f2009-03-27 12:46:42 +0100185 if (custom == 0 || tf->command == ATA_CMD_IDLEIMMEDIATE ||
186 tf->command == ATA_CMD_CHK_POWER) {
Bartlomiej Zolnierkiewicza09485d2009-03-27 12:46:31 +0100187 struct request *rq = hwif->rq;
Bartlomiej Zolnierkiewicza09485d2009-03-27 12:46:31 +0100188
189 if (blk_pm_request(rq))
190 ide_complete_pm_rq(drive, rq);
Bartlomiej Zolnierkiewicz2230d90d2009-03-27 12:46:42 +0100191 else
192 ide_finish_cmd(drive, cmd, stat);
Bartlomiej Zolnierkiewicza09485d2009-03-27 12:46:31 +0100193 }
194
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 return ide_stopped;
196}
197
Adrian Bunkda6f4c72008-02-01 23:09:16 +0100198static u8 wait_drive_not_busy(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199{
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +0200200 ide_hwif_t *hwif = drive->hwif;
Masatake YAMATOb42fa132007-07-03 22:28:34 +0200201 int retries;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 u8 stat;
203
204 /*
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300205 * Last sector was transferred, wait until device is ready. This can
Bartlomiej Zolnierkiewiczf54feaf2008-06-20 20:53:33 +0200206 * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 */
Bartlomiej Zolnierkiewiczf54feaf2008-06-20 20:53:33 +0200208 for (retries = 0; retries < 1000; retries++) {
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200209 stat = hwif->tp_ops->read_status(hwif);
Bartlomiej Zolnierkiewiczc47137a2008-02-06 02:57:51 +0100210
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +0200211 if (stat & ATA_BUSY)
Masatake YAMATOb42fa132007-07-03 22:28:34 +0200212 udelay(10);
213 else
214 break;
215 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +0200217 if (stat & ATA_BUSY)
Jaswinder Singh Rajput2d5abce2009-08-02 20:17:34 -0700218 pr_err("%s: drive still BUSY!\n", drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219
220 return stat;
221}
222
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200223void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd,
224 unsigned int write, unsigned int len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225{
226 ide_hwif_t *hwif = drive->hwif;
227 struct scatterlist *sg = hwif->sg_table;
Bartlomiej Zolnierkiewiczb6308ee2009-03-27 12:46:38 +0100228 struct scatterlist *cursg = cmd->cursg;
David S. Miller7fa350b2009-06-23 04:16:04 -0700229 unsigned long uninitialized_var(flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230 struct page *page;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 unsigned int offset;
232 u8 *buf;
233
Bartlomiej Zolnierkiewiczb6308ee2009-03-27 12:46:38 +0100234 cursg = cmd->cursg;
Bartlomiej Zolnierkiewicz7a007982009-03-31 20:14:59 +0200235 if (cursg == NULL)
236 cursg = cmd->cursg = sg;
Jens Axboe55c16a72007-07-25 08:13:56 +0200237
Bartlomiej Zolnierkiewicz7a007982009-03-31 20:14:59 +0200238 while (len) {
239 unsigned nr_bytes = min(len, cursg->length - cmd->cursg_ofs);
Jean Delvarea90790522009-06-23 04:12:24 -0700240 int page_is_high;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241
Bartlomiej Zolnierkiewicz7a007982009-03-31 20:14:59 +0200242 if (nr_bytes > PAGE_SIZE)
243 nr_bytes = PAGE_SIZE;
244
245 page = sg_page(cursg);
246 offset = cursg->offset + cmd->cursg_ofs;
247
248 /* get the current page and offset */
249 page = nth_page(page, (offset >> PAGE_SHIFT));
250 offset %= PAGE_SIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251
Jean Delvarea90790522009-06-23 04:12:24 -0700252 page_is_high = PageHighMem(page);
253 if (page_is_high)
Bartlomiej Zolnierkiewiczf2bc3162009-03-31 20:14:59 +0200254 local_irq_save(flags);
255
Cong Wang45b408d2011-11-25 23:14:20 +0800256 buf = kmap_atomic(page) + offset;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257
Bartlomiej Zolnierkiewicz7a007982009-03-31 20:14:59 +0200258 cmd->nleft -= nr_bytes;
259 cmd->cursg_ofs += nr_bytes;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260
Bartlomiej Zolnierkiewicz7a007982009-03-31 20:14:59 +0200261 if (cmd->cursg_ofs == cursg->length) {
262 cursg = cmd->cursg = sg_next(cmd->cursg);
263 cmd->cursg_ofs = 0;
264 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265
Bartlomiej Zolnierkiewicz7a007982009-03-31 20:14:59 +0200266 /* do the actual data transfer */
267 if (write)
268 hwif->tp_ops->output_data(drive, cmd, buf, nr_bytes);
269 else
270 hwif->tp_ops->input_data(drive, cmd, buf, nr_bytes);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271
Cong Wang45b408d2011-11-25 23:14:20 +0800272 kunmap_atomic(buf);
Bartlomiej Zolnierkiewiczf2bc3162009-03-31 20:14:59 +0200273
Jean Delvarea90790522009-06-23 04:12:24 -0700274 if (page_is_high)
Bartlomiej Zolnierkiewiczf2bc3162009-03-31 20:14:59 +0200275 local_irq_restore(flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276
Bartlomiej Zolnierkiewicz7a007982009-03-31 20:14:59 +0200277 len -= nr_bytes;
278 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279}
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200280EXPORT_SYMBOL_GPL(ide_pio_bytes);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +0100282static void ide_pio_datablock(ide_drive_t *drive, struct ide_cmd *cmd,
283 unsigned int write)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284{
Bartlomiej Zolnierkiewicz7a007982009-03-31 20:14:59 +0200285 unsigned int nr_bytes;
286
Tejun Heo35cf2b92008-01-26 20:13:10 +0100287 u8 saved_io_32bit = drive->io_32bit;
288
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +0100289 if (cmd->tf_flags & IDE_TFLAG_FS)
290 cmd->rq->errors = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100292 if (cmd->tf_flags & IDE_TFLAG_IO_16BIT)
Bartlomiej Zolnierkiewicze3d9a732009-03-27 12:46:32 +0100293 drive->io_32bit = 0;
Tejun Heo35cf2b92008-01-26 20:13:10 +0100294
Andrew Morton651c29a2006-02-15 15:17:37 -0800295 touch_softlockup_watchdog();
296
Bartlomiej Zolnierkiewicz0dfb9912009-03-27 12:46:39 +0100297 if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO)
Bartlomiej Zolnierkiewicz7a007982009-03-31 20:14:59 +0200298 nr_bytes = min_t(unsigned, cmd->nleft, drive->mult_count << 9);
Bartlomiej Zolnierkiewicz0dfb9912009-03-27 12:46:39 +0100299 else
Bartlomiej Zolnierkiewicz7a007982009-03-31 20:14:59 +0200300 nr_bytes = SECTOR_SIZE;
301
302 ide_pio_bytes(drive, cmd, write, nr_bytes);
Tejun Heo35cf2b92008-01-26 20:13:10 +0100303
304 drive->io_32bit = saved_io_32bit;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305}
306
Bartlomiej Zolnierkiewicz041cea12009-03-27 12:46:41 +0100307static void ide_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308{
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +0100309 if (cmd->tf_flags & IDE_TFLAG_FS) {
Bartlomiej Zolnierkiewiczbf717c02009-03-27 12:46:47 +0100310 int nr_bytes = cmd->nbytes - cmd->nleft;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311
Bartlomiej Zolnierkiewicz0dfb9912009-03-27 12:46:39 +0100312 if (cmd->protocol == ATA_PROT_PIO &&
313 ((cmd->tf_flags & IDE_TFLAG_WRITE) || cmd->nleft == 0)) {
314 if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO)
Bartlomiej Zolnierkiewiczbf717c02009-03-27 12:46:47 +0100315 nr_bytes -= drive->mult_count << 9;
Bartlomiej Zolnierkiewicz0dfb9912009-03-27 12:46:39 +0100316 else
Bartlomiej Zolnierkiewiczbf717c02009-03-27 12:46:47 +0100317 nr_bytes -= SECTOR_SIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 }
319
Bartlomiej Zolnierkiewiczbf717c02009-03-27 12:46:47 +0100320 if (nr_bytes > 0)
321 ide_complete_rq(drive, 0, nr_bytes);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323}
324
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +0100325void ide_finish_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326{
Bartlomiej Zolnierkiewicz6902a532009-03-27 12:46:43 +0100327 struct request *rq = drive->hwif->rq;
Bartlomiej Zolnierkiewicz665d66e2009-06-23 11:35:51 +0000328 u8 err = ide_read_error(drive), nsect = cmd->tf.nsect;
329 u8 set_xfer = !!(cmd->tf_flags & IDE_TFLAG_SET_XFER);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330
Bartlomiej Zolnierkiewicz2230d90d2009-03-27 12:46:42 +0100331 ide_complete_cmd(drive, cmd, stat, err);
Bartlomiej Zolnierkiewicz6902a532009-03-27 12:46:43 +0100332 rq->errors = err;
Bartlomiej Zolnierkiewicz665d66e2009-06-23 11:35:51 +0000333
334 if (err == 0 && set_xfer) {
335 ide_set_xfer_rate(drive, nsect);
336 ide_driveid_update(drive);
337 }
338
Bartlomiej Zolnierkiewiczf974b192009-03-27 12:46:44 +0100339 ide_complete_rq(drive, err ? -EIO : 0, blk_rq_bytes(rq));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340}
341
342/*
Bartlomiej Zolnierkiewicz901bd082009-03-27 12:46:39 +0100343 * Handler for command with PIO data phase.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 */
Bartlomiej Zolnierkiewicz901bd082009-03-27 12:46:39 +0100345static ide_startstop_t task_pio_intr(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346{
347 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +0100348 struct ide_cmd *cmd = &drive->hwif->cmd;
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200349 u8 stat = hwif->tp_ops->read_status(hwif);
Bartlomiej Zolnierkiewicz901bd082009-03-27 12:46:39 +0100350 u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351
Bartlomiej Zolnierkiewicz901bd082009-03-27 12:46:39 +0100352 if (write == 0) {
353 /* Error? */
354 if (stat & ATA_ERR)
Bartlomiej Zolnierkiewicz0a1248c2009-03-27 12:46:41 +0100355 goto out_err;
Linus Torvalds6c3c3152008-03-18 21:26:24 -0700356
Bartlomiej Zolnierkiewicz901bd082009-03-27 12:46:39 +0100357 /* Didn't want any data? Odd. */
Bartlomiej Zolnierkiewicz151055e2009-03-27 12:46:39 +0100358 if ((stat & ATA_DRQ) == 0) {
359 /* Command all done? */
Bartlomiej Zolnierkiewicz0a1248c2009-03-27 12:46:41 +0100360 if (OK_STAT(stat, ATA_DRDY, ATA_BUSY))
361 goto out_end;
Bartlomiej Zolnierkiewicz151055e2009-03-27 12:46:39 +0100362
363 /* Assume it was a spurious irq */
Bartlomiej Zolnierkiewicz0a1248c2009-03-27 12:46:41 +0100364 goto out_wait;
Bartlomiej Zolnierkiewicz151055e2009-03-27 12:46:39 +0100365 }
Bartlomiej Zolnierkiewicz901bd082009-03-27 12:46:39 +0100366 } else {
367 if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
Bartlomiej Zolnierkiewicz0a1248c2009-03-27 12:46:41 +0100368 goto out_err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369
Bartlomiej Zolnierkiewicz901bd082009-03-27 12:46:39 +0100370 /* Deal with unexpected ATA data phase. */
371 if (((stat & ATA_DRQ) == 0) ^ (cmd->nleft == 0))
Bartlomiej Zolnierkiewicz0a1248c2009-03-27 12:46:41 +0100372 goto out_err;
Bartlomiej Zolnierkiewicz901bd082009-03-27 12:46:39 +0100373 }
374
Bartlomiej Zolnierkiewicz0a1248c2009-03-27 12:46:41 +0100375 if (write && cmd->nleft == 0)
376 goto out_end;
Bartlomiej Zolnierkiewicz901bd082009-03-27 12:46:39 +0100377
378 /* Still data left to transfer. */
379 ide_pio_datablock(drive, cmd, write);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380
Linus Torvalds6c3c3152008-03-18 21:26:24 -0700381 /* Are we done? Check status and finish transfer. */
Bartlomiej Zolnierkiewicz901bd082009-03-27 12:46:39 +0100382 if (write == 0 && cmd->nleft == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 stat = wait_drive_not_busy(drive);
Bartlomiej Zolnierkiewicz73d7de02008-01-26 20:13:10 +0100384 if (!OK_STAT(stat, 0, BAD_STAT))
Bartlomiej Zolnierkiewicz0a1248c2009-03-27 12:46:41 +0100385 goto out_err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386
Bartlomiej Zolnierkiewicz0a1248c2009-03-27 12:46:41 +0100387 goto out_end;
388 }
389out_wait:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390 /* Still data left to transfer. */
Bartlomiej Zolnierkiewicz60c0cd02009-03-27 12:46:46 +0100391 ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392 return ide_started;
Bartlomiej Zolnierkiewicz0a1248c2009-03-27 12:46:41 +0100393out_end:
Bartlomiej Zolnierkiewicz2230d90d2009-03-27 12:46:42 +0100394 if ((cmd->tf_flags & IDE_TFLAG_FS) == 0)
395 ide_finish_cmd(drive, cmd, stat);
396 else
Tejun Heo9780e2d2009-05-07 22:24:40 +0900397 ide_complete_rq(drive, 0, blk_rq_sectors(cmd->rq) << 9);
Bartlomiej Zolnierkiewicz0a1248c2009-03-27 12:46:41 +0100398 return ide_stopped;
399out_err:
Bartlomiej Zolnierkiewicz041cea12009-03-27 12:46:41 +0100400 ide_error_cmd(drive, cmd);
401 return ide_error(drive, __func__, stat);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402}
403
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +0100404static ide_startstop_t pre_task_out_intr(ide_drive_t *drive,
405 struct ide_cmd *cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406{
407 ide_startstop_t startstop;
408
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +0200409 if (ide_wait_stat(&startstop, drive, ATA_DRQ,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 drive->bad_wstat, WAIT_DRQ)) {
Jaswinder Singh Rajput2d5abce2009-08-02 20:17:34 -0700411 pr_err("%s: no DRQ after issuing %sWRITE%s\n", drive->name,
Bartlomiej Zolnierkiewicz0dfb9912009-03-27 12:46:39 +0100412 (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) ? "MULT" : "",
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200413 (drive->dev_flags & IDE_DFLAG_LBA48) ? "_EXT" : "");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 return startstop;
415 }
416
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200417 if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 local_irq_disable();
419
Bartlomiej Zolnierkiewicz60c0cd02009-03-27 12:46:46 +0100420 ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE);
Bartlomiej Zolnierkiewicz901bd082009-03-27 12:46:39 +0100421
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +0100422 ide_pio_datablock(drive, cmd, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423
424 return ide_started;
425}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100427int ide_raw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd, u8 *buf,
428 u16 nsect)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429{
FUJITA Tomonori154ed282008-07-15 21:21:43 +0200430 struct request *rq;
431 int error;
Mikulas Patocka720fc222010-04-06 16:43:33 -0700432 int rw = !(cmd->tf_flags & IDE_TFLAG_WRITE) ? READ : WRITE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433
Mikulas Patocka720fc222010-04-06 16:43:33 -0700434 rq = blk_get_request(drive->queue, rw, __GFP_WAIT);
FUJITA Tomonori154ed282008-07-15 21:21:43 +0200435 rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
Tejun Heod868ca22009-04-19 07:00:42 +0900436
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 /*
438 * (ks) We transfer currently only whole sectors.
439 * This is suffient for now. But, it would be great,
440 * if we would find a solution to transfer any size.
441 * To support special commands like READ LONG.
442 */
Tejun Heod868ca22009-04-19 07:00:42 +0900443 if (nsect) {
444 error = blk_rq_map_kern(drive->queue, rq, buf,
445 nsect * SECTOR_SIZE, __GFP_WAIT);
446 if (error)
447 goto put_req;
448 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100450 rq->special = cmd;
451 cmd->rq = rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452
FUJITA Tomonori154ed282008-07-15 21:21:43 +0200453 error = blk_execute_rq(drive->queue, NULL, rq, 0);
FUJITA Tomonori154ed282008-07-15 21:21:43 +0200454
Tejun Heod868ca22009-04-19 07:00:42 +0900455put_req:
456 blk_put_request(rq);
FUJITA Tomonori154ed282008-07-15 21:21:43 +0200457 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459EXPORT_SYMBOL(ide_raw_taskfile);
460
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100461int ide_no_data_taskfile(ide_drive_t *drive, struct ide_cmd *cmd)
Bartlomiej Zolnierkiewicz9a3c49b2008-01-25 22:17:07 +0100462{
Bartlomiej Zolnierkiewicz0dfb9912009-03-27 12:46:39 +0100463 cmd->protocol = ATA_PROT_NODATA;
Bartlomiej Zolnierkiewicz9a3c49b2008-01-25 22:17:07 +0100464
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100465 return ide_raw_taskfile(drive, cmd, NULL, 0);
Bartlomiej Zolnierkiewicz9a3c49b2008-01-25 22:17:07 +0100466}
467EXPORT_SYMBOL_GPL(ide_no_data_taskfile);
468
Bartlomiej Zolnierkiewicz26a5b042007-11-05 21:42:27 +0100469#ifdef CONFIG_IDE_TASK_IOCTL
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100470int ide_taskfile_ioctl(ide_drive_t *drive, unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471{
472 ide_task_request_t *req_task;
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100473 struct ide_cmd cmd;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 u8 *outbuf = NULL;
475 u8 *inbuf = NULL;
Bartlomiej Zolnierkiewiczac026ff2008-01-25 22:17:14 +0100476 u8 *data_buf = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477 int err = 0;
478 int tasksize = sizeof(struct ide_task_request_s);
Alan Cox3a42bb22006-10-16 16:31:02 +0100479 unsigned int taskin = 0;
480 unsigned int taskout = 0;
Bartlomiej Zolnierkiewiczac026ff2008-01-25 22:17:14 +0100481 u16 nsect = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482 char __user *buf = (char __user *)arg;
483
Julia Lawall7d543d82010-06-04 16:11:17 -0700484 req_task = memdup_user(buf, tasksize);
485 if (IS_ERR(req_task))
486 return PTR_ERR(req_task);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487
Alan Cox3a42bb22006-10-16 16:31:02 +0100488 taskout = req_task->out_size;
489 taskin = req_task->in_size;
Jaswinder Singh Rajput2d5abce2009-08-02 20:17:34 -0700490
Alan Cox3a42bb22006-10-16 16:31:02 +0100491 if (taskin > 65536 || taskout > 65536) {
492 err = -EINVAL;
493 goto abort;
494 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495
496 if (taskout) {
497 int outtotal = tasksize;
Deepak Saxenaf5e3c2f2005-11-07 01:01:25 -0800498 outbuf = kzalloc(taskout, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499 if (outbuf == NULL) {
500 err = -ENOMEM;
501 goto abort;
502 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 if (copy_from_user(outbuf, buf + outtotal, taskout)) {
504 err = -EFAULT;
505 goto abort;
506 }
507 }
508
509 if (taskin) {
510 int intotal = tasksize + taskout;
Deepak Saxenaf5e3c2f2005-11-07 01:01:25 -0800511 inbuf = kzalloc(taskin, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 if (inbuf == NULL) {
513 err = -ENOMEM;
514 goto abort;
515 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 if (copy_from_user(inbuf, buf + intotal, taskin)) {
517 err = -EFAULT;
518 goto abort;
519 }
520 }
521
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100522 memset(&cmd, 0, sizeof(cmd));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523
Sergei Shtylyov745483f2009-04-08 14:13:02 +0200524 memcpy(&cmd.hob, req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2);
525 memcpy(&cmd.tf, req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE);
Bartlomiej Zolnierkiewicz866e2ec2008-01-25 22:17:14 +0100526
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200527 cmd.valid.out.tf = IDE_VALID_DEVICE;
528 cmd.valid.in.tf = IDE_VALID_DEVICE | IDE_VALID_IN_TF;
529 cmd.tf_flags = IDE_TFLAG_IO_16BIT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200531 if (drive->dev_flags & IDE_DFLAG_LBA48) {
532 cmd.tf_flags |= IDE_TFLAG_LBA48;
533 cmd.valid.in.hob = IDE_VALID_IN_HOB;
534 }
Bartlomiej Zolnierkiewicza3bbb9d2008-01-25 22:17:10 +0100535
Bartlomiej Zolnierkiewicz74095a92008-01-25 22:17:07 +0100536 if (req_task->out_flags.all) {
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100537 cmd.ftf_flags |= IDE_FTFLAG_FLAGGED;
Bartlomiej Zolnierkiewicz74095a92008-01-25 22:17:07 +0100538
539 if (req_task->out_flags.b.data)
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100540 cmd.ftf_flags |= IDE_FTFLAG_OUT_DATA;
Bartlomiej Zolnierkiewicz74095a92008-01-25 22:17:07 +0100541
542 if (req_task->out_flags.b.nsector_hob)
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200543 cmd.valid.out.hob |= IDE_VALID_NSECT;
Bartlomiej Zolnierkiewicz74095a92008-01-25 22:17:07 +0100544 if (req_task->out_flags.b.sector_hob)
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200545 cmd.valid.out.hob |= IDE_VALID_LBAL;
Bartlomiej Zolnierkiewicz74095a92008-01-25 22:17:07 +0100546 if (req_task->out_flags.b.lcyl_hob)
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200547 cmd.valid.out.hob |= IDE_VALID_LBAM;
Bartlomiej Zolnierkiewicz74095a92008-01-25 22:17:07 +0100548 if (req_task->out_flags.b.hcyl_hob)
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200549 cmd.valid.out.hob |= IDE_VALID_LBAH;
Bartlomiej Zolnierkiewicz74095a92008-01-25 22:17:07 +0100550
551 if (req_task->out_flags.b.error_feature)
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200552 cmd.valid.out.tf |= IDE_VALID_FEATURE;
Bartlomiej Zolnierkiewicz74095a92008-01-25 22:17:07 +0100553 if (req_task->out_flags.b.nsector)
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200554 cmd.valid.out.tf |= IDE_VALID_NSECT;
Bartlomiej Zolnierkiewicz74095a92008-01-25 22:17:07 +0100555 if (req_task->out_flags.b.sector)
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200556 cmd.valid.out.tf |= IDE_VALID_LBAL;
Bartlomiej Zolnierkiewicz74095a92008-01-25 22:17:07 +0100557 if (req_task->out_flags.b.lcyl)
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200558 cmd.valid.out.tf |= IDE_VALID_LBAM;
Bartlomiej Zolnierkiewicz74095a92008-01-25 22:17:07 +0100559 if (req_task->out_flags.b.hcyl)
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200560 cmd.valid.out.tf |= IDE_VALID_LBAH;
Bartlomiej Zolnierkiewicza3bbb9d2008-01-25 22:17:10 +0100561 } else {
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200562 cmd.valid.out.tf |= IDE_VALID_OUT_TF;
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100563 if (cmd.tf_flags & IDE_TFLAG_LBA48)
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200564 cmd.valid.out.hob |= IDE_VALID_OUT_HOB;
Bartlomiej Zolnierkiewicz74095a92008-01-25 22:17:07 +0100565 }
566
Bartlomiej Zolnierkiewicz866e2ec2008-01-25 22:17:14 +0100567 if (req_task->in_flags.b.data)
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100568 cmd.ftf_flags |= IDE_FTFLAG_IN_DATA;
Bartlomiej Zolnierkiewicz866e2ec2008-01-25 22:17:14 +0100569
Bartlomiej Zolnierkiewicz04d09b02009-03-27 12:46:38 +0100570 if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) {
571 /* fixup data phase if needed */
572 if (req_task->data_phase == TASKFILE_IN_DMAQ ||
573 req_task->data_phase == TASKFILE_IN_DMA)
Bartlomiej Zolnierkiewicz0dfb9912009-03-27 12:46:39 +0100574 cmd.tf_flags |= IDE_TFLAG_WRITE;
Bartlomiej Zolnierkiewicz04d09b02009-03-27 12:46:38 +0100575 }
576
Bartlomiej Zolnierkiewicz0dfb9912009-03-27 12:46:39 +0100577 cmd.protocol = ATA_PROT_DMA;
578
579 switch (req_task->data_phase) {
Jaswinder Singh Rajput2d5abce2009-08-02 20:17:34 -0700580 case TASKFILE_MULTI_OUT:
581 if (!drive->mult_count) {
582 /* (hs): give up if multcount is not set */
583 pr_err("%s: %s Multimode Write multcount is not set\n",
584 drive->name, __func__);
585 err = -EPERM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586 goto abort;
Jaswinder Singh Rajput2d5abce2009-08-02 20:17:34 -0700587 }
588 cmd.tf_flags |= IDE_TFLAG_MULTI_PIO;
589 /* fall through */
590 case TASKFILE_OUT:
591 cmd.protocol = ATA_PROT_PIO;
592 /* fall through */
593 case TASKFILE_OUT_DMAQ:
594 case TASKFILE_OUT_DMA:
595 cmd.tf_flags |= IDE_TFLAG_WRITE;
596 nsect = taskout / SECTOR_SIZE;
597 data_buf = outbuf;
598 break;
599 case TASKFILE_MULTI_IN:
600 if (!drive->mult_count) {
601 /* (hs): give up if multcount is not set */
602 pr_err("%s: %s Multimode Read multcount is not set\n",
603 drive->name, __func__);
604 err = -EPERM;
605 goto abort;
606 }
607 cmd.tf_flags |= IDE_TFLAG_MULTI_PIO;
608 /* fall through */
609 case TASKFILE_IN:
610 cmd.protocol = ATA_PROT_PIO;
611 /* fall through */
612 case TASKFILE_IN_DMAQ:
613 case TASKFILE_IN_DMA:
614 nsect = taskin / SECTOR_SIZE;
615 data_buf = inbuf;
616 break;
617 case TASKFILE_NO_DATA:
618 cmd.protocol = ATA_PROT_NODATA;
619 break;
620 default:
621 err = -EFAULT;
622 goto abort;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623 }
624
Bartlomiej Zolnierkiewiczac026ff2008-01-25 22:17:14 +0100625 if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA)
626 nsect = 0;
627 else if (!nsect) {
Sergei Shtylyov745483f2009-04-08 14:13:02 +0200628 nsect = (cmd.hob.nsect << 8) | cmd.tf.nsect;
Bartlomiej Zolnierkiewiczac026ff2008-01-25 22:17:14 +0100629
630 if (!nsect) {
Jaswinder Singh Rajput2d5abce2009-08-02 20:17:34 -0700631 pr_err("%s: in/out command without data\n",
Bartlomiej Zolnierkiewiczac026ff2008-01-25 22:17:14 +0100632 drive->name);
633 err = -EFAULT;
634 goto abort;
635 }
636 }
637
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100638 err = ide_raw_taskfile(drive, &cmd, data_buf, nsect);
Bartlomiej Zolnierkiewiczac026ff2008-01-25 22:17:14 +0100639
Sergei Shtylyov745483f2009-04-08 14:13:02 +0200640 memcpy(req_task->hob_ports, &cmd.hob, HDIO_DRIVE_HOB_HDR_SIZE - 2);
641 memcpy(req_task->io_ports, &cmd.tf, HDIO_DRIVE_TASK_HDR_SIZE);
Bartlomiej Zolnierkiewicz866e2ec2008-01-25 22:17:14 +0100642
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100643 if ((cmd.ftf_flags & IDE_FTFLAG_SET_IN_FLAGS) &&
Bartlomiej Zolnierkiewicz866e2ec2008-01-25 22:17:14 +0100644 req_task->in_flags.all == 0) {
645 req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS;
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200646 if (drive->dev_flags & IDE_DFLAG_LBA48)
Bartlomiej Zolnierkiewicz866e2ec2008-01-25 22:17:14 +0100647 req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8);
648 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649
650 if (copy_to_user(buf, req_task, tasksize)) {
651 err = -EFAULT;
652 goto abort;
653 }
654 if (taskout) {
655 int outtotal = tasksize;
656 if (copy_to_user(buf + outtotal, outbuf, taskout)) {
657 err = -EFAULT;
658 goto abort;
659 }
660 }
661 if (taskin) {
662 int intotal = tasksize + taskout;
663 if (copy_to_user(buf + intotal, inbuf, taskin)) {
664 err = -EFAULT;
665 goto abort;
666 }
667 }
668abort:
669 kfree(req_task);
Jesper Juhl6044ec82005-11-07 01:01:32 -0800670 kfree(outbuf);
671 kfree(inbuf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672
Linus Torvalds1da177e2005-04-16 15:20:36 -0700673 return err;
674}
Bartlomiej Zolnierkiewicz26a5b042007-11-05 21:42:27 +0100675#endif