blob: fd8b6febbf70c440e21850220c18cd7d2bf83ea4 [file] [log] [blame]
Thomas Gleixnerc82ee6d2019-05-19 15:51:48 +02001// SPDX-License-Identifier: GPL-2.0-or-later
Linus Torvalds1da177e2005-04-16 15:20:36 -07002/*
Jeff Garzikaf36d7f2005-08-28 20:18:39 -04003 * libata-scsi.c - helper library for ATA
4 *
Jeff Garzikaf36d7f2005-08-28 20:18:39 -04005 * Copyright 2003-2004 Red Hat, Inc. All rights reserved.
6 * Copyright 2003-2004 Jeff Garzik
7 *
Jeff Garzikaf36d7f2005-08-28 20:18:39 -04008 * libata documentation is available via 'make {ps|pdf}docs',
Mauro Carvalho Chehab9bb9a392017-05-16 09:16:37 -03009 * as Documentation/driver-api/libata.rst
Jeff Garzikaf36d7f2005-08-28 20:18:39 -040010 *
11 * Hardware documentation available from
12 * - http://www.t10.org/
13 * - http://www.t13.org/
Linus Torvalds1da177e2005-04-16 15:20:36 -070014 */
15
Arnd Bergmann75c0b0e2019-11-30 20:28:12 +010016#include <linux/compat.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090017#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include <linux/kernel.h>
19#include <linux/blkdev.h>
20#include <linux/spinlock.h>
Paul Gortmaker38789fd2011-07-17 15:33:58 -040021#include <linux/export.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <scsi/scsi.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#include <scsi/scsi_host.h>
Christoph Hellwigbeb40482006-06-10 18:01:03 +020024#include <scsi/scsi_cmnd.h>
Mike Christie85837eb2005-11-11 16:38:53 -060025#include <scsi/scsi_eh.h>
Jeff Garzik005a5a02005-10-30 23:31:48 -050026#include <scsi/scsi_device.h>
Tejun Heoa6e6ce82006-05-15 21:03:48 +090027#include <scsi/scsi_tcq.h>
Tejun Heo30afc842006-03-18 18:40:14 +090028#include <scsi/scsi_transport.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include <linux/libata.h>
Jeff Garzikb0955182005-05-12 15:45:22 -040030#include <linux/hdreg.h>
Jeff Garzik2dcb4072007-10-19 06:42:56 -040031#include <linux/uaccess.h>
Rafael J. Wysocki2a6e58d2009-01-19 20:56:43 +010032#include <linux/suspend.h>
Christoph Hellwig18f0f972009-11-17 10:00:47 -050033#include <asm/unaligned.h>
Adam Manzanares8e061782016-10-17 11:27:29 -070034#include <linux/ioprio.h>
Linus Walleij45b80842020-02-22 12:20:57 +010035#include <linux/of.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070036
37#include "libata.h"
Gwendal Grignoud9027472010-05-25 12:31:38 -070038#include "libata-transport.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070039
Bartlomiej Zolnierkiewiczc8fa4f82020-03-26 16:58:03 +010040#define ATA_SCSI_RBUF_SIZE 576
Tejun Heo87340e92008-04-28 17:48:51 +090041
42static DEFINE_SPINLOCK(ata_scsi_rbuf_lock);
43static u8 ata_scsi_rbuf[ATA_SCSI_RBUF_SIZE];
Jeff Garzikb0955182005-05-12 15:45:22 -040044
Tejun Heoad706992006-12-17 10:45:57 +090045typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc);
Tejun Heoab5b3a52006-05-31 18:27:34 +090046
Jeff Garzik2dcb4072007-10-19 06:42:56 -040047static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap,
Tejun Heoab5b3a52006-05-31 18:27:34 +090048 const struct scsi_device *scsidev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070049
Douglas Gilbert00ac37f2005-10-28 15:58:28 -040050#define RW_RECOVERY_MPAGE 0x1
51#define RW_RECOVERY_MPAGE_LEN 12
52#define CACHE_MPAGE 0x8
53#define CACHE_MPAGE_LEN 20
54#define CONTROL_MPAGE 0xa
55#define CONTROL_MPAGE_LEN 12
56#define ALL_MPAGES 0x3f
57#define ALL_SUB_MPAGES 0xff
58
59
Jeff Garzik24f75682007-09-21 07:54:49 -040060static const u8 def_rw_recovery_mpage[RW_RECOVERY_MPAGE_LEN] = {
Douglas Gilbert00ac37f2005-10-28 15:58:28 -040061 RW_RECOVERY_MPAGE,
62 RW_RECOVERY_MPAGE_LEN - 2,
Jeff Garzik24f75682007-09-21 07:54:49 -040063 (1 << 7), /* AWRE */
Douglas Gilbert00ac37f2005-10-28 15:58:28 -040064 0, /* read retry count */
65 0, 0, 0, 0,
66 0, /* write retry count */
67 0, 0, 0
68};
69
70static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = {
71 CACHE_MPAGE,
72 CACHE_MPAGE_LEN - 2,
73 0, /* contains WCE, needs to be 0 for logic */
74 0, 0, 0, 0, 0, 0, 0, 0, 0,
75 0, /* contains DRA, needs to be 0 for logic */
76 0, 0, 0, 0, 0, 0, 0
77};
78
79static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = {
80 CONTROL_MPAGE,
81 CONTROL_MPAGE_LEN - 2,
82 2, /* DSENSE=0, GLTSD=1 */
83 0, /* [QAM+QERR may be 1, see 05-359r1] */
84 0, 0, 0, 0, 0xff, 0xff,
85 0, 30 /* extended self test time, see 05-359r1 */
86};
87
Elias Oltmanns45fabbb2008-09-21 11:54:08 +020088static ssize_t ata_scsi_park_show(struct device *device,
89 struct device_attribute *attr, char *buf)
90{
91 struct scsi_device *sdev = to_scsi_device(device);
92 struct ata_port *ap;
93 struct ata_link *link;
94 struct ata_device *dev;
Tejun Heo3948b6f2016-02-18 11:50:37 -050095 unsigned long now;
Kees Cook3f649ab2020-06-03 13:09:38 -070096 unsigned int msecs;
Elias Oltmanns45fabbb2008-09-21 11:54:08 +020097 int rc = 0;
98
99 ap = ata_shost_to_port(sdev->host);
100
Tejun Heo3948b6f2016-02-18 11:50:37 -0500101 spin_lock_irq(ap->lock);
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200102 dev = ata_scsi_find_dev(ap, sdev);
103 if (!dev) {
104 rc = -ENODEV;
105 goto unlock;
106 }
107 if (dev->flags & ATA_DFLAG_NO_UNLOAD) {
108 rc = -EOPNOTSUPP;
109 goto unlock;
110 }
111
112 link = dev->link;
Elias Oltmannsa4641892008-11-03 19:01:08 +0900113 now = jiffies;
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200114 if (ap->pflags & ATA_PFLAG_EH_IN_PROGRESS &&
115 link->eh_context.unloaded_mask & (1 << dev->devno) &&
Elias Oltmannsa4641892008-11-03 19:01:08 +0900116 time_after(dev->unpark_deadline, now))
117 msecs = jiffies_to_msecs(dev->unpark_deadline - now);
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200118 else
119 msecs = 0;
120
121unlock:
122 spin_unlock_irq(ap->lock);
123
124 return rc ? rc : snprintf(buf, 20, "%u\n", msecs);
125}
126
127static ssize_t ata_scsi_park_store(struct device *device,
128 struct device_attribute *attr,
129 const char *buf, size_t len)
130{
131 struct scsi_device *sdev = to_scsi_device(device);
132 struct ata_port *ap;
133 struct ata_device *dev;
134 long int input;
135 unsigned long flags;
136 int rc;
137
Jingoo Han42b9ab72013-07-19 15:56:41 +0900138 rc = kstrtol(buf, 10, &input);
139 if (rc)
140 return rc;
141 if (input < -2)
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200142 return -EINVAL;
143 if (input > ATA_TMOUT_MAX_PARK) {
144 rc = -EOVERFLOW;
145 input = ATA_TMOUT_MAX_PARK;
146 }
147
148 ap = ata_shost_to_port(sdev->host);
149
150 spin_lock_irqsave(ap->lock, flags);
151 dev = ata_scsi_find_dev(ap, sdev);
152 if (unlikely(!dev)) {
153 rc = -ENODEV;
154 goto unlock;
155 }
Hannes Reinecke9162c652014-11-05 13:08:21 +0100156 if (dev->class != ATA_DEV_ATA &&
157 dev->class != ATA_DEV_ZAC) {
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200158 rc = -EOPNOTSUPP;
159 goto unlock;
160 }
161
162 if (input >= 0) {
163 if (dev->flags & ATA_DFLAG_NO_UNLOAD) {
164 rc = -EOPNOTSUPP;
165 goto unlock;
166 }
167
168 dev->unpark_deadline = ata_deadline(jiffies, input);
169 dev->link->eh_info.dev_action[dev->devno] |= ATA_EH_PARK;
170 ata_port_schedule_eh(ap);
171 complete(&ap->park_req_pending);
172 } else {
173 switch (input) {
174 case -1:
175 dev->flags &= ~ATA_DFLAG_NO_UNLOAD;
176 break;
177 case -2:
178 dev->flags |= ATA_DFLAG_NO_UNLOAD;
179 break;
180 }
181 }
182unlock:
183 spin_unlock_irqrestore(ap->lock, flags);
184
185 return rc ? rc : len;
186}
187DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR,
188 ata_scsi_park_show, ata_scsi_park_store);
189EXPORT_SYMBOL_GPL(dev_attr_unload_heads);
190
Hannes Reinecke06dbde52016-04-04 11:44:03 +0200191void ata_scsi_set_sense(struct ata_device *dev, struct scsi_cmnd *cmd,
192 u8 sk, u8 asc, u8 ascq)
Tejun Heof0761be2008-04-28 17:16:52 +0900193{
Hannes Reinecke06dbde52016-04-04 11:44:03 +0200194 bool d_sense = (dev->flags & ATA_DFLAG_D_SENSE);
195
Hannes Reinecke5b01e4b2016-04-04 11:43:54 +0200196 if (!cmd)
197 return;
198
Tejun Heof0761be2008-04-28 17:16:52 +0900199 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
200
Hannes Reinecke06dbde52016-04-04 11:44:03 +0200201 scsi_build_sense_buffer(d_sense, cmd->sense_buffer, sk, asc, ascq);
Tejun Heof0761be2008-04-28 17:16:52 +0900202}
203
Hannes Reinecke492bf622016-04-04 11:43:59 +0200204void ata_scsi_set_sense_information(struct ata_device *dev,
205 struct scsi_cmnd *cmd,
206 const struct ata_taskfile *tf)
207{
208 u64 information;
209
210 if (!cmd)
211 return;
212
213 information = ata_tf_read_block(tf, dev);
214 if (information == U64_MAX)
215 return;
216
217 scsi_set_sense_information(cmd->sense_buffer,
218 SCSI_SENSE_BUFFERSIZE, information);
219}
220
Hannes Reineckebcfc8672016-04-04 11:44:05 +0200221static void ata_scsi_set_invalid_field(struct ata_device *dev,
Hannes Reinecke0df10b82016-04-04 11:44:06 +0200222 struct scsi_cmnd *cmd, u16 field, u8 bit)
Hannes Reineckebcfc8672016-04-04 11:44:05 +0200223{
224 ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x24, 0x0);
Tom Yan8554e5e2016-07-07 01:13:09 +0800225 /* "Invalid field in CDB" */
Hannes Reineckebcfc8672016-04-04 11:44:05 +0200226 scsi_set_sense_field_pointer(cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE,
Hannes Reinecke0df10b82016-04-04 11:44:06 +0200227 field, bit, 1);
Hannes Reineckebcfc8672016-04-04 11:44:05 +0200228}
229
Hannes Reinecke77800812016-04-04 11:44:07 +0200230static void ata_scsi_set_invalid_parameter(struct ata_device *dev,
231 struct scsi_cmnd *cmd, u16 field)
232{
233 /* "Invalid field in parameter list" */
234 ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x26, 0x0);
235 scsi_set_sense_field_pointer(cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE,
236 field, 0xff, 0);
Tony Jonesee959b02008-02-22 00:13:36 +0100237}
Kristen Carlson Accardica773292007-10-25 00:58:59 -0400238
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200239struct device_attribute *ata_common_sdev_attrs[] = {
240 &dev_attr_unload_heads,
241 NULL
242};
243EXPORT_SYMBOL_GPL(ata_common_sdev_attrs);
244
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245/**
246 * ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd.
247 * @sdev: SCSI device for which BIOS geometry is to be determined
248 * @bdev: block device associated with @sdev
249 * @capacity: capacity of SCSI device
250 * @geom: location to which geometry will be output
251 *
252 * Generic bios head/sector/cylinder calculator
253 * used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS)
254 * mapping. Some situations may arise where the disk is not
255 * bootable if this is not used.
256 *
257 * LOCKING:
258 * Defined by the SCSI layer. We don't really care.
259 *
260 * RETURNS:
261 * Zero.
262 */
263int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev,
264 sector_t capacity, int geom[])
265{
266 geom[0] = 255;
267 geom[1] = 63;
268 sector_div(capacity, 255*63);
269 geom[2] = capacity;
270
271 return 0;
272}
Bartlomiej Zolnierkiewicza52fbcf2020-03-26 16:58:04 +0100273EXPORT_SYMBOL_GPL(ata_std_bios_param);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274
Jeff Garzikb0955182005-05-12 15:45:22 -0400275/**
Tejun Heod8d91292010-05-15 20:09:34 +0200276 * ata_scsi_unlock_native_capacity - unlock native capacity
277 * @sdev: SCSI device to adjust device capacity for
278 *
279 * This function is called if a partition on @sdev extends beyond
280 * the end of the device. It requests EH to unlock HPA.
281 *
282 * LOCKING:
283 * Defined by the SCSI layer. Might sleep.
284 */
285void ata_scsi_unlock_native_capacity(struct scsi_device *sdev)
286{
287 struct ata_port *ap = ata_shost_to_port(sdev->host);
288 struct ata_device *dev;
289 unsigned long flags;
290
291 spin_lock_irqsave(ap->lock, flags);
292
293 dev = ata_scsi_find_dev(ap, sdev);
294 if (dev && dev->n_sectors < dev->n_native_sectors) {
295 dev->flags |= ATA_DFLAG_UNLOCK_HPA;
296 dev->link->eh_info.action |= ATA_EH_RESET;
297 ata_port_schedule_eh(ap);
298 }
299
300 spin_unlock_irqrestore(ap->lock, flags);
301 ata_port_wait_eh(ap);
302}
Bartlomiej Zolnierkiewicza52fbcf2020-03-26 16:58:04 +0100303EXPORT_SYMBOL_GPL(ata_scsi_unlock_native_capacity);
Tejun Heod8d91292010-05-15 20:09:34 +0200304
305/**
Tejun Heo5924b742007-01-02 20:20:07 +0900306 * ata_get_identity - Handler for HDIO_GET_IDENTITY ioctl
Randy Dunlap5eb66fe2009-01-20 16:28:59 -0800307 * @ap: target port
Tejun Heo5924b742007-01-02 20:20:07 +0900308 * @sdev: SCSI device to get identify data for
309 * @arg: User buffer area for identify data
310 *
311 * LOCKING:
312 * Defined by the SCSI layer. We don't really care.
313 *
314 * RETURNS:
315 * Zero on success, negative errno on error.
316 */
Jeff Garzik94be9a52009-01-16 10:17:09 -0500317static int ata_get_identity(struct ata_port *ap, struct scsi_device *sdev,
318 void __user *arg)
Tejun Heo5924b742007-01-02 20:20:07 +0900319{
Tejun Heo5924b742007-01-02 20:20:07 +0900320 struct ata_device *dev = ata_scsi_find_dev(ap, sdev);
321 u16 __user *dst = arg;
322 char buf[40];
323
324 if (!dev)
325 return -ENOMSG;
326
327 if (copy_to_user(dst, dev->id, ATA_ID_WORDS * sizeof(u16)))
328 return -EFAULT;
329
330 ata_id_string(dev->id, buf, ATA_ID_PROD, ATA_ID_PROD_LEN);
331 if (copy_to_user(dst + ATA_ID_PROD, buf, ATA_ID_PROD_LEN))
332 return -EFAULT;
333
334 ata_id_string(dev->id, buf, ATA_ID_FW_REV, ATA_ID_FW_REV_LEN);
335 if (copy_to_user(dst + ATA_ID_FW_REV, buf, ATA_ID_FW_REV_LEN))
336 return -EFAULT;
337
338 ata_id_string(dev->id, buf, ATA_ID_SERNO, ATA_ID_SERNO_LEN);
339 if (copy_to_user(dst + ATA_ID_SERNO, buf, ATA_ID_SERNO_LEN))
340 return -EFAULT;
341
342 return 0;
343}
344
345/**
Jeff Garzikb0955182005-05-12 15:45:22 -0400346 * ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl
Randy Dunlap8e8b77d2005-11-01 21:29:27 -0800347 * @scsidev: Device to which we are issuing command
Jeff Garzikb0955182005-05-12 15:45:22 -0400348 * @arg: User provided data for issuing command
349 *
350 * LOCKING:
351 * Defined by the SCSI layer. We don't really care.
352 *
353 * RETURNS:
354 * Zero on success, negative errno on error.
355 */
Jeff Garzikb0955182005-05-12 15:45:22 -0400356int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg)
357{
358 int rc = 0;
Kees Cook429296c2018-07-31 12:51:53 -0700359 u8 sensebuf[SCSI_SENSE_BUFFERSIZE];
Jeff Garzikb0955182005-05-12 15:45:22 -0400360 u8 scsi_cmd[MAX_COMMAND_SIZE];
Kees Cook429296c2018-07-31 12:51:53 -0700361 u8 args[4], *argbuf = NULL;
Jeff Garzikb0955182005-05-12 15:45:22 -0400362 int argsize = 0;
Mike Christie85837eb2005-11-11 16:38:53 -0600363 enum dma_data_direction data_dir;
Christoph Hellwig76aaf872017-02-23 16:02:36 +0100364 struct scsi_sense_hdr sshdr;
Eran Tromerbbe1fe72006-10-10 14:29:25 -0700365 int cmd_result;
Jeff Garzikb0955182005-05-12 15:45:22 -0400366
Randy Dunlapc893a3a2006-01-28 13:15:32 -0500367 if (arg == NULL)
Jeff Garzikb0955182005-05-12 15:45:22 -0400368 return -EINVAL;
369
370 if (copy_from_user(args, arg, sizeof(args)))
371 return -EFAULT;
372
Kees Cook429296c2018-07-31 12:51:53 -0700373 memset(sensebuf, 0, sizeof(sensebuf));
Jeff Garzikb0955182005-05-12 15:45:22 -0400374 memset(scsi_cmd, 0, sizeof(scsi_cmd));
375
376 if (args[3]) {
Grant Grundler295124d2010-08-17 10:56:53 -0700377 argsize = ATA_SECT_SIZE * args[3];
Jeff Garzikb0955182005-05-12 15:45:22 -0400378 argbuf = kmalloc(argsize, GFP_KERNEL);
Jeff Raubitschek54dac832005-10-04 10:21:19 -0400379 if (argbuf == NULL) {
380 rc = -ENOMEM;
381 goto error;
382 }
Jeff Garzikb0955182005-05-12 15:45:22 -0400383
384 scsi_cmd[1] = (4 << 1); /* PIO Data-in */
385 scsi_cmd[2] = 0x0e; /* no off.line or cc, read from dev,
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400386 block count in sector count field */
Mike Christie85837eb2005-11-11 16:38:53 -0600387 data_dir = DMA_FROM_DEVICE;
Jeff Garzikb0955182005-05-12 15:45:22 -0400388 } else {
389 scsi_cmd[1] = (3 << 1); /* Non-data */
Eran Tromerbbe1fe72006-10-10 14:29:25 -0700390 scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */
Mike Christie85837eb2005-11-11 16:38:53 -0600391 data_dir = DMA_NONE;
Jeff Garzikb0955182005-05-12 15:45:22 -0400392 }
393
394 scsi_cmd[0] = ATA_16;
395
396 scsi_cmd[4] = args[2];
Bartlomiej Zolnierkiewicza4f19042008-10-10 22:39:20 +0200397 if (args[0] == ATA_CMD_SMART) { /* hack -- ide driver does this too */
Jeff Garzikb0955182005-05-12 15:45:22 -0400398 scsi_cmd[6] = args[3];
399 scsi_cmd[8] = args[1];
Linus Walleijf355eec2018-08-30 11:06:36 +0200400 scsi_cmd[10] = ATA_SMART_LBAM_PASS;
401 scsi_cmd[12] = ATA_SMART_LBAH_PASS;
Jeff Garzikb0955182005-05-12 15:45:22 -0400402 } else {
403 scsi_cmd[6] = args[1];
404 }
405 scsi_cmd[14] = args[0];
406
407 /* Good values for timeout and retries? Values below
408 from scsi_ioctl_send_command() for default case... */
Eran Tromerbbe1fe72006-10-10 14:29:25 -0700409 cmd_result = scsi_execute(scsidev, scsi_cmd, data_dir, argbuf, argsize,
Christoph Hellwig76aaf872017-02-23 16:02:36 +0100410 sensebuf, &sshdr, (10*HZ), 5, 0, 0, NULL);
Eran Tromerbbe1fe72006-10-10 14:29:25 -0700411
412 if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */
413 u8 *desc = sensebuf + 8;
414 cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */
415
416 /* If we set cc then ATA pass-through will cause a
417 * check condition even if no error. Filter that. */
418 if (cmd_result & SAM_STAT_CHECK_CONDITION) {
Krzysztof Mazur6d3bfc72013-03-27 13:51:14 +0100419 if (sshdr.sense_key == RECOVERED_ERROR &&
420 sshdr.asc == 0 && sshdr.ascq == 0x1d)
Eran Tromerbbe1fe72006-10-10 14:29:25 -0700421 cmd_result &= ~SAM_STAT_CHECK_CONDITION;
422 }
423
424 /* Send userspace a few ATA registers (same as drivers/ide) */
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400425 if (sensebuf[0] == 0x72 && /* format is "descriptor" */
426 desc[0] == 0x09) { /* code is "ATA Descriptor" */
427 args[0] = desc[13]; /* status */
428 args[1] = desc[3]; /* error */
429 args[2] = desc[5]; /* sector count (0:7) */
Eran Tromerbbe1fe72006-10-10 14:29:25 -0700430 if (copy_to_user(arg, args, sizeof(args)))
431 rc = -EFAULT;
432 }
433 }
434
435
436 if (cmd_result) {
Jeff Garzikb0955182005-05-12 15:45:22 -0400437 rc = -EIO;
438 goto error;
439 }
440
Jeff Garzikb0955182005-05-12 15:45:22 -0400441 if ((argbuf)
Randy Dunlapc893a3a2006-01-28 13:15:32 -0500442 && copy_to_user(arg + sizeof(args), argbuf, argsize))
Jeff Garzikb0955182005-05-12 15:45:22 -0400443 rc = -EFAULT;
444error:
Jesper Juhl8f760782006-06-27 02:55:06 -0700445 kfree(argbuf);
Jeff Garzikb0955182005-05-12 15:45:22 -0400446 return rc;
447}
448
449/**
450 * ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl
Randy Dunlap8e8b77d2005-11-01 21:29:27 -0800451 * @scsidev: Device to which we are issuing command
Jeff Garzikb0955182005-05-12 15:45:22 -0400452 * @arg: User provided data for issuing command
453 *
454 * LOCKING:
455 * Defined by the SCSI layer. We don't really care.
456 *
457 * RETURNS:
458 * Zero on success, negative errno on error.
459 */
460int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg)
461{
462 int rc = 0;
Kees Cook429296c2018-07-31 12:51:53 -0700463 u8 sensebuf[SCSI_SENSE_BUFFERSIZE];
Jeff Garzikb0955182005-05-12 15:45:22 -0400464 u8 scsi_cmd[MAX_COMMAND_SIZE];
Kees Cook429296c2018-07-31 12:51:53 -0700465 u8 args[7];
Christoph Hellwig76aaf872017-02-23 16:02:36 +0100466 struct scsi_sense_hdr sshdr;
David Milburnaf068bd2007-01-30 00:59:15 -0800467 int cmd_result;
Jeff Garzikb0955182005-05-12 15:45:22 -0400468
Randy Dunlapc893a3a2006-01-28 13:15:32 -0500469 if (arg == NULL)
Jeff Garzikb0955182005-05-12 15:45:22 -0400470 return -EINVAL;
471
472 if (copy_from_user(args, arg, sizeof(args)))
473 return -EFAULT;
474
Kees Cook429296c2018-07-31 12:51:53 -0700475 memset(sensebuf, 0, sizeof(sensebuf));
Jeff Garzikb0955182005-05-12 15:45:22 -0400476 memset(scsi_cmd, 0, sizeof(scsi_cmd));
477 scsi_cmd[0] = ATA_16;
478 scsi_cmd[1] = (3 << 1); /* Non-data */
David Milburnaf068bd2007-01-30 00:59:15 -0800479 scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */
Jeff Garzikb0955182005-05-12 15:45:22 -0400480 scsi_cmd[4] = args[1];
481 scsi_cmd[6] = args[2];
482 scsi_cmd[8] = args[3];
483 scsi_cmd[10] = args[4];
484 scsi_cmd[12] = args[5];
Mark Lord277239f2007-03-30 17:45:52 -0400485 scsi_cmd[13] = args[6] & 0x4f;
Jeff Garzikb0955182005-05-12 15:45:22 -0400486 scsi_cmd[14] = args[0];
487
Jeff Garzikb0955182005-05-12 15:45:22 -0400488 /* Good values for timeout and retries? Values below
Jeff Garzik2e9edbf2006-03-24 09:56:57 -0500489 from scsi_ioctl_send_command() for default case... */
David Milburnaf068bd2007-01-30 00:59:15 -0800490 cmd_result = scsi_execute(scsidev, scsi_cmd, DMA_NONE, NULL, 0,
Christoph Hellwig76aaf872017-02-23 16:02:36 +0100491 sensebuf, &sshdr, (10*HZ), 5, 0, 0, NULL);
Jeff Garzikb0955182005-05-12 15:45:22 -0400492
David Milburnaf068bd2007-01-30 00:59:15 -0800493 if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */
494 u8 *desc = sensebuf + 8;
495 cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */
496
497 /* If we set cc then ATA pass-through will cause a
498 * check condition even if no error. Filter that. */
499 if (cmd_result & SAM_STAT_CHECK_CONDITION) {
Krzysztof Mazur6d3bfc72013-03-27 13:51:14 +0100500 if (sshdr.sense_key == RECOVERED_ERROR &&
501 sshdr.asc == 0 && sshdr.ascq == 0x1d)
David Milburnaf068bd2007-01-30 00:59:15 -0800502 cmd_result &= ~SAM_STAT_CHECK_CONDITION;
503 }
504
505 /* Send userspace ATA registers */
506 if (sensebuf[0] == 0x72 && /* format is "descriptor" */
507 desc[0] == 0x09) {/* code is "ATA Descriptor" */
508 args[0] = desc[13]; /* status */
509 args[1] = desc[3]; /* error */
510 args[2] = desc[5]; /* sector count (0:7) */
511 args[3] = desc[7]; /* lbal */
512 args[4] = desc[9]; /* lbam */
513 args[5] = desc[11]; /* lbah */
514 args[6] = desc[12]; /* select */
515 if (copy_to_user(arg, args, sizeof(args)))
516 rc = -EFAULT;
517 }
518 }
519
520 if (cmd_result) {
521 rc = -EIO;
522 goto error;
523 }
524
525 error:
Jeff Garzikb0955182005-05-12 15:45:22 -0400526 return rc;
527}
528
Alan Coxe3cf95d2009-04-09 17:31:17 +0100529static int ata_ioc32(struct ata_port *ap)
530{
531 if (ap->flags & ATA_FLAG_PIO_DMA)
532 return 1;
533 if (ap->pflags & ATA_PFLAG_PIO32)
534 return 1;
535 return 0;
536}
537
Arnd Bergmann75c0b0e2019-11-30 20:28:12 +0100538/*
539 * This handles both native and compat commands, so anything added
540 * here must have a compatible argument, or check in_compat_syscall()
541 */
Jeff Garzik94be9a52009-01-16 10:17:09 -0500542int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev,
Nathan Chancellor6f4e6262019-02-07 09:07:20 -0700543 unsigned int cmd, void __user *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544{
Arnd Bergmann287e6612016-02-11 14:16:27 +0100545 unsigned long val;
546 int rc = -EINVAL;
Alan Coxe3cf95d2009-04-09 17:31:17 +0100547 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700548
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549 switch (cmd) {
Arnd Bergmann287e6612016-02-11 14:16:27 +0100550 case HDIO_GET_32BIT:
Alan Coxe3cf95d2009-04-09 17:31:17 +0100551 spin_lock_irqsave(ap->lock, flags);
552 val = ata_ioc32(ap);
553 spin_unlock_irqrestore(ap->lock, flags);
Arnd Bergmann75c0b0e2019-11-30 20:28:12 +0100554#ifdef CONFIG_COMPAT
555 if (in_compat_syscall())
556 return put_user(val, (compat_ulong_t __user *)arg);
557#endif
Arnd Bergmann287e6612016-02-11 14:16:27 +0100558 return put_user(val, (unsigned long __user *)arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559
Arnd Bergmann287e6612016-02-11 14:16:27 +0100560 case HDIO_SET_32BIT:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561 val = (unsigned long) arg;
Alan Coxe3cf95d2009-04-09 17:31:17 +0100562 rc = 0;
563 spin_lock_irqsave(ap->lock, flags);
564 if (ap->pflags & ATA_PFLAG_PIO32CHANGE) {
565 if (val)
566 ap->pflags |= ATA_PFLAG_PIO32;
567 else
568 ap->pflags &= ~ATA_PFLAG_PIO32;
569 } else {
570 if (val != ata_ioc32(ap))
571 rc = -EINVAL;
572 }
573 spin_unlock_irqrestore(ap->lock, flags);
574 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575
Tejun Heo5924b742007-01-02 20:20:07 +0900576 case HDIO_GET_IDENTITY:
Jeff Garzik94be9a52009-01-16 10:17:09 -0500577 return ata_get_identity(ap, scsidev, arg);
Tejun Heo5924b742007-01-02 20:20:07 +0900578
Jeff Garzikb0955182005-05-12 15:45:22 -0400579 case HDIO_DRIVE_CMD:
580 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
581 return -EACCES;
582 return ata_cmd_ioctl(scsidev, arg);
583
584 case HDIO_DRIVE_TASK:
585 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
586 return -EACCES;
587 return ata_task_ioctl(scsidev, arg);
588
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589 default:
590 rc = -ENOTTY;
591 break;
592 }
593
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594 return rc;
595}
Jeff Garzik94be9a52009-01-16 10:17:09 -0500596EXPORT_SYMBOL_GPL(ata_sas_scsi_ioctl);
597
Nathan Chancellor6f4e6262019-02-07 09:07:20 -0700598int ata_scsi_ioctl(struct scsi_device *scsidev, unsigned int cmd,
599 void __user *arg)
Jeff Garzik94be9a52009-01-16 10:17:09 -0500600{
601 return ata_sas_scsi_ioctl(ata_shost_to_port(scsidev->host),
602 scsidev, cmd, arg);
603}
604EXPORT_SYMBOL_GPL(ata_scsi_ioctl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605
606/**
607 * ata_scsi_qc_new - acquire new ata_queued_cmd reference
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608 * @dev: ATA device to which the new command is attached
609 * @cmd: SCSI command that originated this ATA command
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610 *
611 * Obtain a reference to an unused ata_queued_cmd structure,
612 * which is the basic libata structure representing a single
613 * ATA command sent to the hardware.
614 *
615 * If a command was available, fill in the SCSI-specific
616 * portions of the structure with information on the
617 * current command.
618 *
619 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -0400620 * spin_lock_irqsave(host lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621 *
622 * RETURNS:
623 * Command allocated, or %NULL if none available.
624 */
Adrian Bunk7102d232007-01-04 00:09:36 +0100625static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev,
Jeff Garzikb27dcfb2010-11-17 22:56:48 -0500626 struct scsi_cmnd *cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627{
628 struct ata_queued_cmd *qc;
629
Shaohua Li12cb5ce2015-01-15 17:32:27 -0800630 qc = ata_qc_new_init(dev, cmd->request->tag);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631 if (qc) {
632 qc->scsicmd = cmd;
Jeff Garzikb27dcfb2010-11-17 22:56:48 -0500633 qc->scsidone = cmd->scsi_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634
Tejun Heoff2aeb12007-12-05 16:43:11 +0900635 qc->sg = scsi_sglist(cmd);
Boaz Harrosh7120165c2007-09-18 17:48:50 +0200636 qc->n_elem = scsi_sg_count(cmd);
Damien Le Moal7eb49502018-05-09 09:28:11 +0900637
638 if (cmd->request->rq_flags & RQF_QUIET)
639 qc->flags |= ATA_QCFLAG_QUIET;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640 } else {
641 cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1);
Jeff Garzikb27dcfb2010-11-17 22:56:48 -0500642 cmd->scsi_done(cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643 }
644
645 return qc;
646}
647
Tejun Heoaacda372008-03-18 17:47:43 +0900648static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc)
649{
650 struct scsi_cmnd *scmd = qc->scsicmd;
651
Christoph Hellwigbdf87102020-04-14 09:42:25 +0200652 qc->extrabytes = scmd->extra_len;
Tejun Heoaacda372008-03-18 17:47:43 +0900653 qc->nbytes = scsi_bufflen(scmd) + qc->extrabytes;
654}
655
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656/**
Jeff Garzikb0955182005-05-12 15:45:22 -0400657 * ata_dump_status - user friendly display of error info
658 * @id: id of the port in question
659 * @tf: ptr to filled out taskfile
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 *
Jeff Garzikb0955182005-05-12 15:45:22 -0400661 * Decode and dump the ATA error/status registers for the user so
662 * that they have some idea what really happened at the non
663 * make-believe layer.
664 *
665 * LOCKING:
666 * inherited from caller
667 */
Adrian Bunk7102d232007-01-04 00:09:36 +0100668static void ata_dump_status(unsigned id, struct ata_taskfile *tf)
Jeff Garzikb0955182005-05-12 15:45:22 -0400669{
670 u8 stat = tf->command, err = tf->feature;
671
Joe Perches6ef56322017-06-12 12:17:39 -0700672 pr_warn("ata%u: status=0x%02x { ", id, stat);
Jeff Garzikb0955182005-05-12 15:45:22 -0400673 if (stat & ATA_BUSY) {
Joe Perches6ef56322017-06-12 12:17:39 -0700674 pr_cont("Busy }\n"); /* Data is not valid in this case */
Jeff Garzikb0955182005-05-12 15:45:22 -0400675 } else {
Joe Perches6ef56322017-06-12 12:17:39 -0700676 if (stat & ATA_DRDY) pr_cont("DriveReady ");
677 if (stat & ATA_DF) pr_cont("DeviceFault ");
678 if (stat & ATA_DSC) pr_cont("SeekComplete ");
679 if (stat & ATA_DRQ) pr_cont("DataRequest ");
680 if (stat & ATA_CORR) pr_cont("CorrectedError ");
681 if (stat & ATA_SENSE) pr_cont("Sense ");
682 if (stat & ATA_ERR) pr_cont("Error ");
683 pr_cont("}\n");
Jeff Garzikb0955182005-05-12 15:45:22 -0400684
685 if (err) {
Joe Perches6ef56322017-06-12 12:17:39 -0700686 pr_warn("ata%u: error=0x%02x { ", id, err);
687 if (err & ATA_ABORTED) pr_cont("DriveStatusError ");
Hannes Reinecke1308d7f2015-03-27 16:46:34 +0100688 if (err & ATA_ICRC) {
689 if (err & ATA_ABORTED)
Joe Perches6ef56322017-06-12 12:17:39 -0700690 pr_cont("BadCRC ");
691 else pr_cont("Sector ");
Jeff Garzikb0955182005-05-12 15:45:22 -0400692 }
Joe Perches6ef56322017-06-12 12:17:39 -0700693 if (err & ATA_UNC) pr_cont("UncorrectableError ");
694 if (err & ATA_IDNF) pr_cont("SectorIdNotFound ");
695 if (err & ATA_TRK0NF) pr_cont("TrackZeroNotFound ");
696 if (err & ATA_AMNF) pr_cont("AddrMarkNotFound ");
697 pr_cont("}\n");
Jeff Garzikb0955182005-05-12 15:45:22 -0400698 }
699 }
700}
701
702/**
703 * ata_to_sense_error - convert ATA error to SCSI error
Randy Dunlap8e8b77d2005-11-01 21:29:27 -0800704 * @id: ATA device number
Jeff Garzikb0955182005-05-12 15:45:22 -0400705 * @drv_stat: value contained in ATA status register
706 * @drv_err: value contained in ATA error register
707 * @sk: the sense key we'll fill out
708 * @asc: the additional sense code we'll fill out
709 * @ascq: the additional sense code qualifier we'll fill out
Tejun Heo246619d2006-05-15 20:58:16 +0900710 * @verbose: be verbose
Jeff Garzikb0955182005-05-12 15:45:22 -0400711 *
712 * Converts an ATA error into a SCSI error. Fill out pointers to
713 * SK, ASC, and ASCQ bytes for later use in fixed or descriptor
714 * format sense blocks.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715 *
716 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -0400717 * spin_lock_irqsave(host lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718 */
Adrian Bunk7102d232007-01-04 00:09:36 +0100719static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk,
720 u8 *asc, u8 *ascq, int verbose)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700721{
Jeff Garzikb0955182005-05-12 15:45:22 -0400722 int i;
Jeff Garzikffe75ef2005-10-09 10:40:44 -0400723
Linus Torvalds1da177e2005-04-16 15:20:36 -0700724 /* Based on the 3ware driver translation table */
Arjan van de Ven98ac62d2005-11-28 10:06:23 +0100725 static const unsigned char sense_table[][4] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726 /* BBD|ECC|ID|MAR */
Hannes Reinecke8ae72042015-03-27 16:46:32 +0100727 {0xd1, ABORTED_COMMAND, 0x00, 0x00},
728 // Device busy Aborted command
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729 /* BBD|ECC|ID */
Hannes Reinecke8ae72042015-03-27 16:46:32 +0100730 {0xd0, ABORTED_COMMAND, 0x00, 0x00},
731 // Device busy Aborted command
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732 /* ECC|MC|MARK */
Hannes Reinecke8ae72042015-03-27 16:46:32 +0100733 {0x61, HARDWARE_ERROR, 0x00, 0x00},
734 // Device fault Hardware error
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735 /* ICRC|ABRT */ /* NB: ICRC & !ABRT is BBD */
Hannes Reinecke8ae72042015-03-27 16:46:32 +0100736 {0x84, ABORTED_COMMAND, 0x47, 0x00},
737 // Data CRC error SCSI parity error
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738 /* MC|ID|ABRT|TRK0|MARK */
Hannes Reinecke8ae72042015-03-27 16:46:32 +0100739 {0x37, NOT_READY, 0x04, 0x00},
740 // Unit offline Not ready
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741 /* MCR|MARK */
Hannes Reinecke8ae72042015-03-27 16:46:32 +0100742 {0x09, NOT_READY, 0x04, 0x00},
743 // Unrecovered disk error Not ready
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744 /* Bad address mark */
Hannes Reinecke8ae72042015-03-27 16:46:32 +0100745 {0x01, MEDIUM_ERROR, 0x13, 0x00},
746 // Address mark not found for data field
747 /* TRK0 - Track 0 not found */
748 {0x02, HARDWARE_ERROR, 0x00, 0x00},
749 // Hardware error
Gwendal Grignou78062c52013-06-18 10:54:48 -0700750 /* Abort: 0x04 is not translated here, see below */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700751 /* Media change request */
Hannes Reinecke8ae72042015-03-27 16:46:32 +0100752 {0x08, NOT_READY, 0x04, 0x00},
753 // FIXME: faking offline
754 /* SRV/IDNF - ID not found */
755 {0x10, ILLEGAL_REQUEST, 0x21, 0x00},
756 // Logical address out of range
757 /* MC - Media Changed */
758 {0x20, UNIT_ATTENTION, 0x28, 0x00},
759 // Not ready to ready change, medium may have changed
760 /* ECC - Uncorrectable ECC error */
761 {0x40, MEDIUM_ERROR, 0x11, 0x04},
762 // Unrecovered read error
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763 /* BBD - block marked bad */
Hannes Reinecke8ae72042015-03-27 16:46:32 +0100764 {0x80, MEDIUM_ERROR, 0x11, 0x04},
765 // Block marked bad Medium error, unrecovered read error
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766 {0xFF, 0xFF, 0xFF, 0xFF}, // END mark
767 };
Arjan van de Ven98ac62d2005-11-28 10:06:23 +0100768 static const unsigned char stat_table[][4] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769 /* Must be first because BUSY means no other bits valid */
Hannes Reinecke8ae72042015-03-27 16:46:32 +0100770 {0x80, ABORTED_COMMAND, 0x47, 0x00},
771 // Busy, fake parity for now
772 {0x40, ILLEGAL_REQUEST, 0x21, 0x04},
773 // Device ready, unaligned write command
774 {0x20, HARDWARE_ERROR, 0x44, 0x00},
775 // Device fault, internal target failure
776 {0x08, ABORTED_COMMAND, 0x47, 0x00},
777 // Timed out in xfer, fake parity for now
778 {0x04, RECOVERED_ERROR, 0x11, 0x00},
779 // Recovered ECC error Medium error, recovered
Linus Torvalds1da177e2005-04-16 15:20:36 -0700780 {0xFF, 0xFF, 0xFF, 0xFF}, // END mark
781 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783 /*
784 * Is this an error we can process/parse
785 */
Jeff Garzikb0955182005-05-12 15:45:22 -0400786 if (drv_stat & ATA_BUSY) {
787 drv_err = 0; /* Ignore the err bits, they're invalid */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700788 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789
Jeff Garzikb0955182005-05-12 15:45:22 -0400790 if (drv_err) {
791 /* Look for drv_err */
792 for (i = 0; sense_table[i][0] != 0xFF; i++) {
793 /* Look for best matches first */
Jeff Garzik2e9edbf2006-03-24 09:56:57 -0500794 if ((sense_table[i][0] & drv_err) ==
Jeff Garzikb0955182005-05-12 15:45:22 -0400795 sense_table[i][0]) {
796 *sk = sense_table[i][1];
797 *asc = sense_table[i][2];
798 *ascq = sense_table[i][3];
799 goto translate_done;
800 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802 }
803
Gwendal Grignou78062c52013-06-18 10:54:48 -0700804 /*
805 * Fall back to interpreting status bits. Note that if the drv_err
806 * has only the ABRT bit set, we decode drv_stat. ABRT by itself
807 * is not descriptive enough.
808 */
Jeff Garzikb0955182005-05-12 15:45:22 -0400809 for (i = 0; stat_table[i][0] != 0xFF; i++) {
810 if (stat_table[i][0] & drv_stat) {
811 *sk = stat_table[i][1];
812 *asc = stat_table[i][2];
813 *ascq = stat_table[i][3];
814 goto translate_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700815 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817
Gwendal Grignou78062c52013-06-18 10:54:48 -0700818 /*
819 * We need a sensible error return here, which is tricky, and one
820 * that won't cause people to do things like return a disk wrongly.
821 */
Alan Cox2d202022006-03-21 15:53:46 +0000822 *sk = ABORTED_COMMAND;
823 *asc = 0x00;
824 *ascq = 0x00;
Jeff Garzikb0955182005-05-12 15:45:22 -0400825
826 translate_done:
Tejun Heo246619d2006-05-15 20:58:16 +0900827 if (verbose)
Joe Perches6ef56322017-06-12 12:17:39 -0700828 pr_err("ata%u: translated ATA stat/err 0x%02x/%02x to SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n",
Tejun Heo246619d2006-05-15 20:58:16 +0900829 id, drv_stat, drv_err, *sk, *asc, *ascq);
Jeff Garzikb0955182005-05-12 15:45:22 -0400830 return;
831}
832
833/*
Tejun Heo750426a2006-11-14 22:37:35 +0900834 * ata_gen_passthru_sense - Generate check condition sense block.
Jeff Garzikb0955182005-05-12 15:45:22 -0400835 * @qc: Command that completed.
836 *
837 * This function is specific to the ATA descriptor format sense
838 * block specified for the ATA pass through commands. Regardless
839 * of whether the command errored or not, return a sense
840 * block. Copy all controller registers into the sense
Gwendal Grignou84a9a8c2013-01-18 10:56:43 -0800841 * block. If there was no error, we get the request from an ATA
842 * passthrough command, so we use the following sense data:
843 * sk = RECOVERED ERROR
844 * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE
845 *
Jeff Garzikb0955182005-05-12 15:45:22 -0400846 *
847 * LOCKING:
Tejun Heo750426a2006-11-14 22:37:35 +0900848 * None.
Jeff Garzikb0955182005-05-12 15:45:22 -0400849 */
Tejun Heo750426a2006-11-14 22:37:35 +0900850static void ata_gen_passthru_sense(struct ata_queued_cmd *qc)
Jeff Garzikb0955182005-05-12 15:45:22 -0400851{
852 struct scsi_cmnd *cmd = qc->scsicmd;
Tejun Heoe61e0672006-05-15 20:57:40 +0900853 struct ata_taskfile *tf = &qc->result_tf;
Jeff Garzikb0955182005-05-12 15:45:22 -0400854 unsigned char *sb = cmd->sense_buffer;
855 unsigned char *desc = sb + 8;
Tejun Heo246619d2006-05-15 20:58:16 +0900856 int verbose = qc->ap->ops->error_handler == NULL;
Hannes Reineckeb525e772016-04-04 11:44:00 +0200857 u8 sense_key, asc, ascq;
Jeff Garzikb0955182005-05-12 15:45:22 -0400858
859 memset(sb, 0, SCSI_SENSE_BUFFERSIZE);
860
Jeff Garzik0e5dec42005-10-06 09:40:20 -0400861 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
Jeff Garzikb0955182005-05-12 15:45:22 -0400862
863 /*
Jeff Garzikb0955182005-05-12 15:45:22 -0400864 * Use ata_to_sense_error() to map status register bits
865 * onto sense key, asc & ascq.
866 */
Tejun Heo058e55e2006-04-02 18:51:53 +0900867 if (qc->err_mask ||
868 tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
Tejun Heo44877b42007-02-21 01:06:51 +0900869 ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature,
Hannes Reineckeb525e772016-04-04 11:44:00 +0200870 &sense_key, &asc, &ascq, verbose);
Hannes Reinecke06dbde52016-04-04 11:44:03 +0200871 ata_scsi_set_sense(qc->dev, cmd, sense_key, asc, ascq);
Gwendal Grignou84a9a8c2013-01-18 10:56:43 -0800872 } else {
Hannes Reinecke11093cb2016-04-04 11:44:02 +0200873 /*
874 * ATA PASS-THROUGH INFORMATION AVAILABLE
875 * Always in descriptor format sense.
876 */
877 scsi_build_sense_buffer(1, cmd->sense_buffer,
878 RECOVERED_ERROR, 0, 0x1D);
Jeff Garzikb0955182005-05-12 15:45:22 -0400879 }
880
Hannes Reinecke11093cb2016-04-04 11:44:02 +0200881 if ((cmd->sense_buffer[0] & 0x7f) >= 0x72) {
882 u8 len;
Jeff Garzikb0955182005-05-12 15:45:22 -0400883
Hannes Reinecke11093cb2016-04-04 11:44:02 +0200884 /* descriptor format */
885 len = sb[7];
886 desc = (char *)scsi_sense_desc_find(sb, len + 8, 9);
887 if (!desc) {
888 if (SCSI_SENSE_BUFFERSIZE < len + 14)
889 return;
890 sb[7] = len + 14;
891 desc = sb + 8 + len;
892 }
893 desc[0] = 9;
894 desc[1] = 12;
895 /*
896 * Copy registers into sense buffer.
897 */
898 desc[2] = 0x00;
899 desc[3] = tf->feature; /* == error reg */
900 desc[5] = tf->nsect;
901 desc[7] = tf->lbal;
902 desc[9] = tf->lbam;
903 desc[11] = tf->lbah;
904 desc[12] = tf->device;
905 desc[13] = tf->command; /* == status reg */
Jeff Garzikb0955182005-05-12 15:45:22 -0400906
Hannes Reinecke11093cb2016-04-04 11:44:02 +0200907 /*
908 * Fill in Extend bit, and the high order bytes
909 * if applicable.
910 */
911 if (tf->flags & ATA_TFLAG_LBA48) {
912 desc[2] |= 0x01;
913 desc[4] = tf->hob_nsect;
914 desc[6] = tf->hob_lbal;
915 desc[8] = tf->hob_lbam;
916 desc[10] = tf->hob_lbah;
917 }
918 } else {
919 /* Fixed sense format */
920 desc[0] = tf->feature;
921 desc[1] = tf->command; /* status */
922 desc[2] = tf->device;
923 desc[3] = tf->nsect;
Hannes Reineckee0029dc2016-10-31 21:06:58 +0100924 desc[7] = 0;
Hannes Reinecke11093cb2016-04-04 11:44:02 +0200925 if (tf->flags & ATA_TFLAG_LBA48) {
926 desc[8] |= 0x80;
927 if (tf->hob_nsect)
928 desc[8] |= 0x40;
929 if (tf->hob_lbal || tf->hob_lbam || tf->hob_lbah)
930 desc[8] |= 0x20;
931 }
932 desc[9] = tf->lbal;
933 desc[10] = tf->lbam;
934 desc[11] = tf->lbah;
Jeff Garzikb0955182005-05-12 15:45:22 -0400935 }
936}
937
938/**
Tejun Heo750426a2006-11-14 22:37:35 +0900939 * ata_gen_ata_sense - generate a SCSI fixed sense block
Jeff Garzikb0955182005-05-12 15:45:22 -0400940 * @qc: Command that we are erroring out
941 *
Tejun Heod25614b2006-11-14 22:37:35 +0900942 * Generate sense block for a failed ATA command @qc. Descriptor
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300943 * format is used to accommodate LBA48 block address.
Jeff Garzikb0955182005-05-12 15:45:22 -0400944 *
945 * LOCKING:
Tejun Heo750426a2006-11-14 22:37:35 +0900946 * None.
Jeff Garzikb0955182005-05-12 15:45:22 -0400947 */
Tejun Heo750426a2006-11-14 22:37:35 +0900948static void ata_gen_ata_sense(struct ata_queued_cmd *qc)
Jeff Garzikb0955182005-05-12 15:45:22 -0400949{
Tejun Heod25614b2006-11-14 22:37:35 +0900950 struct ata_device *dev = qc->dev;
Jeff Garzikb0955182005-05-12 15:45:22 -0400951 struct scsi_cmnd *cmd = qc->scsicmd;
Tejun Heoe61e0672006-05-15 20:57:40 +0900952 struct ata_taskfile *tf = &qc->result_tf;
Jeff Garzikb0955182005-05-12 15:45:22 -0400953 unsigned char *sb = cmd->sense_buffer;
Tejun Heo246619d2006-05-15 20:58:16 +0900954 int verbose = qc->ap->ops->error_handler == NULL;
Tejun Heod25614b2006-11-14 22:37:35 +0900955 u64 block;
Hannes Reineckeb525e772016-04-04 11:44:00 +0200956 u8 sense_key, asc, ascq;
Jeff Garzikb0955182005-05-12 15:45:22 -0400957
958 memset(sb, 0, SCSI_SENSE_BUFFERSIZE);
959
Jeff Garzik0e5dec42005-10-06 09:40:20 -0400960 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
Jeff Garzikb0955182005-05-12 15:45:22 -0400961
Hannes Reinecke59f68472016-04-25 12:45:50 +0200962 if (ata_dev_disabled(dev)) {
963 /* Device disabled after error recovery */
964 /* LOGICAL UNIT NOT READY, HARD RESET REQUIRED */
965 ata_scsi_set_sense(dev, cmd, NOT_READY, 0x04, 0x21);
966 return;
967 }
Tejun Heod25614b2006-11-14 22:37:35 +0900968 /* Use ata_to_sense_error() to map status register bits
Jeff Garzikb0955182005-05-12 15:45:22 -0400969 * onto sense key, asc & ascq.
970 */
Tejun Heo058e55e2006-04-02 18:51:53 +0900971 if (qc->err_mask ||
972 tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
Tejun Heo44877b42007-02-21 01:06:51 +0900973 ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature,
Hannes Reineckeb525e772016-04-04 11:44:00 +0200974 &sense_key, &asc, &ascq, verbose);
Hannes Reinecke06dbde52016-04-04 11:44:03 +0200975 ata_scsi_set_sense(dev, cmd, sense_key, asc, ascq);
Hannes Reinecke5e6acd12016-04-04 11:43:56 +0200976 } else {
977 /* Could not decode error */
978 ata_dev_warn(dev, "could not decode error status 0x%x err_mask 0x%x\n",
979 tf->command, qc->err_mask);
Hannes Reinecke06dbde52016-04-04 11:44:03 +0200980 ata_scsi_set_sense(dev, cmd, ABORTED_COMMAND, 0, 0);
Hannes Reinecke5e6acd12016-04-04 11:43:56 +0200981 return;
Jeff Garzikb0955182005-05-12 15:45:22 -0400982 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700983
Tejun Heod25614b2006-11-14 22:37:35 +0900984 block = ata_tf_read_block(&qc->result_tf, dev);
Hannes Reineckecffd1ee2016-04-04 11:43:57 +0200985 if (block == U64_MAX)
986 return;
Jeff Garzik0274aa22005-06-22 13:50:56 -0400987
Hannes Reineckecf8b49b2016-04-04 11:43:58 +0200988 scsi_set_sense_information(sb, SCSI_SENSE_BUFFERSIZE, block);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700989}
990
Bartlomiej Zolnierkiewicz15964ff2020-03-26 16:58:19 +0100991void ata_scsi_sdev_config(struct scsi_device *sdev)
Brian Kinga6cce2a2006-03-17 17:04:15 -0600992{
993 sdev->use_10_for_rw = 1;
994 sdev->use_10_for_ms = 1;
Nicolai Stangee1859342016-12-07 22:21:33 +0100995 sdev->no_write_same = 1;
Tejun Heo31cc23b2007-09-23 13:14:12 +0900996
997 /* Schedule policy is determined by ->qc_defer() callback and
998 * it needs to see every deferred qc. Set dev_blocked to 1 to
999 * prevent SCSI midlayer from automatically deferring
1000 * requests.
1001 */
1002 sdev->max_device_blocked = 1;
Brian Kinga6cce2a2006-03-17 17:04:15 -06001003}
1004
James Bottomleyfa2fc7f2008-02-19 11:36:57 +01001005/**
Mauro Carvalho Chehab94bd5712020-10-23 18:32:55 +02001006 * ata_scsi_dma_need_drain - Check whether data transfer may overflow
Randy Dunlap73fd8b62008-02-19 13:43:21 -08001007 * @rq: request to be checked
James Bottomleyfa2fc7f2008-02-19 11:36:57 +01001008 *
1009 * ATAPI commands which transfer variable length data to host
Masanari Iidac9b55602016-04-13 23:36:27 +09001010 * might overflow due to application error or hardware bug. This
James Bottomleyfa2fc7f2008-02-19 11:36:57 +01001011 * function checks whether overflow should be drained and ignored
1012 * for @request.
1013 *
1014 * LOCKING:
1015 * None.
1016 *
1017 * RETURNS:
1018 * 1 if ; otherwise, 0.
1019 */
Christoph Hellwigcc979232020-04-14 09:42:24 +02001020bool ata_scsi_dma_need_drain(struct request *rq)
James Bottomleyfa2fc7f2008-02-19 11:36:57 +01001021{
Christoph Hellwig82ed4db2017-01-27 09:46:29 +01001022 return atapi_cmd_type(scsi_req(rq)->cmd[0]) == ATAPI_MISC;
James Bottomleyfa2fc7f2008-02-19 11:36:57 +01001023}
Christoph Hellwigcc979232020-04-14 09:42:24 +02001024EXPORT_SYMBOL_GPL(ata_scsi_dma_need_drain);
James Bottomleyfa2fc7f2008-02-19 11:36:57 +01001025
Bartlomiej Zolnierkiewicz15964ff2020-03-26 16:58:19 +01001026int ata_scsi_dev_config(struct scsi_device *sdev, struct ata_device *dev)
Brian Kinga6cce2a2006-03-17 17:04:15 -06001027{
shaohua.li@intel.com900e5992011-05-06 11:35:31 -06001028 struct request_queue *q = sdev->request_queue;
1029
Elias Oltmanns45fabbb2008-09-21 11:54:08 +02001030 if (!ata_id_has_unload(dev->id))
1031 dev->flags |= ATA_DFLAG_NO_UNLOAD;
1032
Tejun Heo914ed352006-11-01 18:39:55 +09001033 /* configure max sectors */
shaohua.li@intel.com900e5992011-05-06 11:35:31 -06001034 blk_queue_max_hw_sectors(q, dev->max_sectors);
Brian Kinga6cce2a2006-03-17 17:04:15 -06001035
James Bottomleyfa2fc7f2008-02-19 11:36:57 +01001036 if (dev->class == ATA_DEV_ATAPI) {
Tejun Heo729a6a32011-01-20 13:59:06 +01001037 sdev->sector_size = ATA_SECT_SIZE;
1038
1039 /* set DMA padding */
shaohua.li@intel.com900e5992011-05-06 11:35:31 -06001040 blk_queue_update_dma_pad(q, ATA_DMA_PAD_SZ - 1);
James Bottomleyfa2fc7f2008-02-19 11:36:57 +01001041
Christoph Hellwigcc979232020-04-14 09:42:24 +02001042 /* make room for appending the drain */
1043 blk_queue_max_segments(q, queue_max_segments(q) - 1);
1044
1045 sdev->dma_drain_len = ATAPI_MAX_DRAIN;
Christoph Hellwigce288e02021-03-31 09:29:59 +02001046 sdev->dma_drain_buf = kmalloc(sdev->dma_drain_len, GFP_NOIO);
Christoph Hellwigcc979232020-04-14 09:42:24 +02001047 if (!sdev->dma_drain_buf) {
Joe Perchesa9a79df2011-04-15 15:51:59 -07001048 ata_dev_err(dev, "drain buffer allocation failed\n");
James Bottomleyfa2fc7f2008-02-19 11:36:57 +01001049 return -ENOMEM;
1050 }
James Bottomleyfa2fc7f2008-02-19 11:36:57 +01001051 } else {
Grant Grundler295124d2010-08-17 10:56:53 -07001052 sdev->sector_size = ata_id_logical_sector_size(dev->id);
Tejun Heod8cf5382008-01-15 08:46:59 +09001053 sdev->manage_start_stop = 1;
James Bottomleydde20202008-02-19 11:36:56 +01001054 }
Tejun Heod8cf5382008-01-15 08:46:59 +09001055
Tejun Heo729a6a32011-01-20 13:59:06 +01001056 /*
1057 * ata_pio_sectors() expects buffer for each sector to not cross
1058 * page boundary. Enforce it by requiring buffers to be sector
1059 * aligned, which works iff sector_size is not larger than
1060 * PAGE_SIZE. ATAPI devices also need the alignment as
1061 * IDENTIFY_PACKET is executed as ATA_PROT_PIO.
1062 */
1063 if (sdev->sector_size > PAGE_SIZE)
Joe Perchesa9a79df2011-04-15 15:51:59 -07001064 ata_dev_warn(dev,
Tejun Heo729a6a32011-01-20 13:59:06 +01001065 "sector_size=%u > PAGE_SIZE, PIO may malfunction\n",
1066 sdev->sector_size);
1067
shaohua.li@intel.com900e5992011-05-06 11:35:31 -06001068 blk_queue_update_dma_alignment(q, sdev->sector_size - 1);
Tejun Heo729a6a32011-01-20 13:59:06 +01001069
Jeff Garzikf26792d2007-10-29 17:18:39 -04001070 if (dev->flags & ATA_DFLAG_AN)
1071 set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events);
1072
Tejun Heoa6e6ce82006-05-15 21:03:48 +09001073 if (dev->flags & ATA_DFLAG_NCQ) {
1074 int depth;
1075
1076 depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id));
Jens Axboe69278f72018-05-11 12:51:10 -06001077 depth = min(ATA_MAX_QUEUE, depth);
Christoph Hellwigdb5ed4d2014-11-13 15:08:42 +01001078 scsi_change_queue_depth(sdev, depth);
Tejun Heoa6e6ce82006-05-15 21:03:48 +09001079 }
James Bottomleyfa2fc7f2008-02-19 11:36:57 +01001080
Christoph Hellwigd80210f2017-06-19 14:26:46 +02001081 if (dev->flags & ATA_DFLAG_TRUSTED)
1082 sdev->security_supported = 1;
1083
Grant Grundler295124d2010-08-17 10:56:53 -07001084 dev->sdev = sdev;
James Bottomleyfa2fc7f2008-02-19 11:36:57 +01001085 return 0;
Brian Kinga6cce2a2006-03-17 17:04:15 -06001086}
1087
Linus Torvalds1da177e2005-04-16 15:20:36 -07001088/**
1089 * ata_scsi_slave_config - Set SCSI device attributes
1090 * @sdev: SCSI device to examine
1091 *
1092 * This is called before we actually start reading
1093 * and writing to the device, to configure certain
1094 * SCSI mid-layer behaviors.
1095 *
1096 * LOCKING:
1097 * Defined by SCSI layer. We don't really care.
1098 */
1099
1100int ata_scsi_slave_config(struct scsi_device *sdev)
1101{
Tejun Heo31534362006-05-31 18:27:36 +09001102 struct ata_port *ap = ata_shost_to_port(sdev->host);
1103 struct ata_device *dev = __ata_scsi_find_dev(ap, sdev);
James Bottomleyfa2fc7f2008-02-19 11:36:57 +01001104 int rc = 0;
Tejun Heo31534362006-05-31 18:27:36 +09001105
Brian Kinga6cce2a2006-03-17 17:04:15 -06001106 ata_scsi_sdev_config(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001107
Tejun Heo31534362006-05-31 18:27:36 +09001108 if (dev)
James Bottomleyfa2fc7f2008-02-19 11:36:57 +01001109 rc = ata_scsi_dev_config(sdev, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001110
James Bottomleyfa2fc7f2008-02-19 11:36:57 +01001111 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001112}
Bartlomiej Zolnierkiewicza52fbcf2020-03-26 16:58:04 +01001113EXPORT_SYMBOL_GPL(ata_scsi_slave_config);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001114
1115/**
Tejun Heo83c47bc2006-05-31 18:28:07 +09001116 * ata_scsi_slave_destroy - SCSI device is about to be destroyed
1117 * @sdev: SCSI device to be destroyed
1118 *
1119 * @sdev is about to be destroyed for hot/warm unplugging. If
1120 * this unplugging was initiated by libata as indicated by NULL
1121 * dev->sdev, this function doesn't have to do anything.
1122 * Otherwise, SCSI layer initiated warm-unplug is in progress.
1123 * Clear dev->sdev, schedule the device for ATA detach and invoke
1124 * EH.
1125 *
1126 * LOCKING:
1127 * Defined by SCSI layer. We don't really care.
1128 */
1129void ata_scsi_slave_destroy(struct scsi_device *sdev)
1130{
1131 struct ata_port *ap = ata_shost_to_port(sdev->host);
1132 unsigned long flags;
1133 struct ata_device *dev;
1134
1135 if (!ap->ops->error_handler)
1136 return;
1137
Jeff Garzikba6a1302006-06-22 23:46:10 -04001138 spin_lock_irqsave(ap->lock, flags);
Tejun Heo83c47bc2006-05-31 18:28:07 +09001139 dev = __ata_scsi_find_dev(ap, sdev);
1140 if (dev && dev->sdev) {
1141 /* SCSI device already in CANCEL state, no need to offline it */
1142 dev->sdev = NULL;
1143 dev->flags |= ATA_DFLAG_DETACH;
1144 ata_port_schedule_eh(ap);
1145 }
Jeff Garzikba6a1302006-06-22 23:46:10 -04001146 spin_unlock_irqrestore(ap->lock, flags);
James Bottomleyfa2fc7f2008-02-19 11:36:57 +01001147
Christoph Hellwigcc979232020-04-14 09:42:24 +02001148 kfree(sdev->dma_drain_buf);
Tejun Heo83c47bc2006-05-31 18:28:07 +09001149}
Bartlomiej Zolnierkiewicza52fbcf2020-03-26 16:58:04 +01001150EXPORT_SYMBOL_GPL(ata_scsi_slave_destroy);
Tejun Heo83c47bc2006-05-31 18:28:07 +09001151
1152/**
Douglas Gilbert972dcaf2005-08-11 03:35:53 -04001153 * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command
1154 * @qc: Storage for translated ATA taskfile
Douglas Gilbert972dcaf2005-08-11 03:35:53 -04001155 *
1156 * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY
1157 * (to start). Perhaps these commands should be preceded by
1158 * CHECK POWER MODE to see what power mode the device is already in.
1159 * [See SAT revision 5 at www.t10.org]
1160 *
1161 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04001162 * spin_lock_irqsave(host lock)
Douglas Gilbert972dcaf2005-08-11 03:35:53 -04001163 *
1164 * RETURNS:
1165 * Zero on success, non-zero on error.
1166 */
Tejun Heoad706992006-12-17 10:45:57 +09001167static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc)
Douglas Gilbert972dcaf2005-08-11 03:35:53 -04001168{
Tejun Heo542b1442006-12-17 10:45:08 +09001169 struct scsi_cmnd *scmd = qc->scsicmd;
Douglas Gilbert972dcaf2005-08-11 03:35:53 -04001170 struct ata_taskfile *tf = &qc->tf;
Tejun Heoad706992006-12-17 10:45:57 +09001171 const u8 *cdb = scmd->cmnd;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001172 u16 fp;
Hannes Reinecke0df10b82016-04-04 11:44:06 +02001173 u8 bp = 0xff;
Douglas Gilbert972dcaf2005-08-11 03:35:53 -04001174
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001175 if (scmd->cmd_len < 5) {
1176 fp = 4;
Tejun Heo2e5704f2006-12-17 10:46:33 +09001177 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001178 }
Tejun Heo2e5704f2006-12-17 10:46:33 +09001179
Douglas Gilbert972dcaf2005-08-11 03:35:53 -04001180 tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
1181 tf->protocol = ATA_PROT_NODATA;
Tejun Heo542b1442006-12-17 10:45:08 +09001182 if (cdb[1] & 0x1) {
Douglas Gilbert972dcaf2005-08-11 03:35:53 -04001183 ; /* ignore IMMED bit, violates sat-r05 */
1184 }
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001185 if (cdb[4] & 0x2) {
1186 fp = 4;
Hannes Reinecke0df10b82016-04-04 11:44:06 +02001187 bp = 1;
Douglas Gilbertae006512005-10-09 09:09:35 -04001188 goto invalid_fld; /* LOEJ bit set not supported */
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001189 }
1190 if (((cdb[4] >> 4) & 0xf) != 0) {
1191 fp = 4;
Hannes Reinecke0df10b82016-04-04 11:44:06 +02001192 bp = 3;
Douglas Gilbertae006512005-10-09 09:09:35 -04001193 goto invalid_fld; /* power conditions not supported */
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001194 }
Tejun Heoe31e85312007-09-23 13:14:13 +09001195
Tejun Heo542b1442006-12-17 10:45:08 +09001196 if (cdb[4] & 0x1) {
Douglas Gilbert972dcaf2005-08-11 03:35:53 -04001197 tf->nsect = 1; /* 1 sector, lba=0 */
Albert Lee9d5b1302005-10-04 08:48:17 -04001198
1199 if (qc->dev->flags & ATA_DFLAG_LBA) {
Tejun Heoc44078c2006-05-15 20:57:21 +09001200 tf->flags |= ATA_TFLAG_LBA;
Albert Lee9d5b1302005-10-04 08:48:17 -04001201
1202 tf->lbah = 0x0;
1203 tf->lbam = 0x0;
1204 tf->lbal = 0x0;
1205 tf->device |= ATA_LBA;
1206 } else {
1207 /* CHS */
1208 tf->lbal = 0x1; /* sect */
1209 tf->lbam = 0x0; /* cyl low */
1210 tf->lbah = 0x0; /* cyl high */
1211 }
1212
Douglas Gilbert972dcaf2005-08-11 03:35:53 -04001213 tf->command = ATA_CMD_VERIFY; /* READ VERIFY */
Tejun Heo920a4b12007-05-04 21:28:48 +02001214 } else {
Rafael J. Wysocki2a6e58d2009-01-19 20:56:43 +01001215 /* Some odd clown BIOSen issue spindown on power off (ACPI S4
1216 * or S5) causing some drives to spin up and down again.
1217 */
1218 if ((qc->ap->flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) &&
1219 system_state == SYSTEM_POWER_OFF)
1220 goto skip;
1221
1222 if ((qc->ap->flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) &&
1223 system_entering_hibernation())
1224 goto skip;
1225
Robert Hancock78981a72007-01-30 00:59:18 -08001226 /* Issue ATA STANDBY IMMEDIATE command */
1227 tf->command = ATA_CMD_STANDBYNOW1;
Tejun Heo920a4b12007-05-04 21:28:48 +02001228 }
Robert Hancock78981a72007-01-30 00:59:18 -08001229
Douglas Gilbert972dcaf2005-08-11 03:35:53 -04001230 /*
1231 * Standby and Idle condition timers could be implemented but that
1232 * would require libata to implement the Power condition mode page
1233 * and allow the user to change it. Changing mode pages requires
1234 * MODE SELECT to be implemented.
1235 */
1236
1237 return 0;
Douglas Gilbertae006512005-10-09 09:09:35 -04001238
Rafael J. Wysocki2a6e58d2009-01-19 20:56:43 +01001239 invalid_fld:
Hannes Reinecke0df10b82016-04-04 11:44:06 +02001240 ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp);
Douglas Gilbertae006512005-10-09 09:09:35 -04001241 return 1;
Rafael J. Wysocki2a6e58d2009-01-19 20:56:43 +01001242 skip:
1243 scmd->result = SAM_STAT_GOOD;
1244 return 1;
Douglas Gilbert972dcaf2005-08-11 03:35:53 -04001245}
1246
1247
1248/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07001249 * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command
1250 * @qc: Storage for translated ATA taskfile
Linus Torvalds1da177e2005-04-16 15:20:36 -07001251 *
1252 * Sets up an ATA taskfile to issue FLUSH CACHE or
1253 * FLUSH CACHE EXT.
1254 *
1255 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04001256 * spin_lock_irqsave(host lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001257 *
1258 * RETURNS:
1259 * Zero on success, non-zero on error.
1260 */
Tejun Heoad706992006-12-17 10:45:57 +09001261static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262{
1263 struct ata_taskfile *tf = &qc->tf;
1264
1265 tf->flags |= ATA_TFLAG_DEVICE;
1266 tf->protocol = ATA_PROT_NODATA;
1267
Tejun Heo6fc49ad2006-11-11 20:10:45 +09001268 if (qc->dev->flags & ATA_DFLAG_FLUSH_EXT)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269 tf->command = ATA_CMD_FLUSH_EXT;
1270 else
1271 tf->command = ATA_CMD_FLUSH;
1272
Tejun Heob666da32007-10-26 15:53:59 +09001273 /* flush is critical for IO integrity, consider it an IO command */
1274 qc->flags |= ATA_QCFLAG_IO;
1275
Linus Torvalds1da177e2005-04-16 15:20:36 -07001276 return 0;
1277}
1278
1279/**
Albert Lee3aef5232005-10-04 08:47:43 -04001280 * scsi_6_lba_len - Get LBA and transfer length
Tejun Heo542b1442006-12-17 10:45:08 +09001281 * @cdb: SCSI command to translate
Albert Lee3aef5232005-10-04 08:47:43 -04001282 *
1283 * Calculate LBA and transfer length for 6-byte commands.
1284 *
1285 * RETURNS:
1286 * @plba: the LBA
1287 * @plen: the transfer length
1288 */
Tejun Heo542b1442006-12-17 10:45:08 +09001289static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
Albert Lee3aef5232005-10-04 08:47:43 -04001290{
1291 u64 lba = 0;
Jeff Garzik6c7b7d22007-05-25 04:39:39 -04001292 u32 len;
Albert Lee3aef5232005-10-04 08:47:43 -04001293
1294 VPRINTK("six-byte command\n");
1295
Jeff Garzik6c7b7d22007-05-25 04:39:39 -04001296 lba |= ((u64)(cdb[1] & 0x1f)) << 16;
Tejun Heo542b1442006-12-17 10:45:08 +09001297 lba |= ((u64)cdb[2]) << 8;
1298 lba |= ((u64)cdb[3]);
Albert Lee3aef5232005-10-04 08:47:43 -04001299
Jeff Garzik6c7b7d22007-05-25 04:39:39 -04001300 len = cdb[4];
Albert Lee3aef5232005-10-04 08:47:43 -04001301
1302 *plba = lba;
1303 *plen = len;
1304}
1305
1306/**
1307 * scsi_10_lba_len - Get LBA and transfer length
Tejun Heo542b1442006-12-17 10:45:08 +09001308 * @cdb: SCSI command to translate
Albert Lee3aef5232005-10-04 08:47:43 -04001309 *
1310 * Calculate LBA and transfer length for 10-byte commands.
1311 *
1312 * RETURNS:
1313 * @plba: the LBA
1314 * @plen: the transfer length
1315 */
Tejun Heo542b1442006-12-17 10:45:08 +09001316static void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
Albert Lee3aef5232005-10-04 08:47:43 -04001317{
1318 u64 lba = 0;
1319 u32 len = 0;
1320
1321 VPRINTK("ten-byte command\n");
1322
Tejun Heo542b1442006-12-17 10:45:08 +09001323 lba |= ((u64)cdb[2]) << 24;
1324 lba |= ((u64)cdb[3]) << 16;
1325 lba |= ((u64)cdb[4]) << 8;
1326 lba |= ((u64)cdb[5]);
Albert Lee3aef5232005-10-04 08:47:43 -04001327
Tejun Heo542b1442006-12-17 10:45:08 +09001328 len |= ((u32)cdb[7]) << 8;
1329 len |= ((u32)cdb[8]);
Albert Lee3aef5232005-10-04 08:47:43 -04001330
1331 *plba = lba;
1332 *plen = len;
1333}
1334
1335/**
1336 * scsi_16_lba_len - Get LBA and transfer length
Tejun Heo542b1442006-12-17 10:45:08 +09001337 * @cdb: SCSI command to translate
Albert Lee3aef5232005-10-04 08:47:43 -04001338 *
1339 * Calculate LBA and transfer length for 16-byte commands.
1340 *
1341 * RETURNS:
1342 * @plba: the LBA
1343 * @plen: the transfer length
1344 */
Tejun Heo542b1442006-12-17 10:45:08 +09001345static void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
Albert Lee3aef5232005-10-04 08:47:43 -04001346{
1347 u64 lba = 0;
1348 u32 len = 0;
1349
1350 VPRINTK("sixteen-byte command\n");
1351
Tejun Heo542b1442006-12-17 10:45:08 +09001352 lba |= ((u64)cdb[2]) << 56;
1353 lba |= ((u64)cdb[3]) << 48;
1354 lba |= ((u64)cdb[4]) << 40;
1355 lba |= ((u64)cdb[5]) << 32;
1356 lba |= ((u64)cdb[6]) << 24;
1357 lba |= ((u64)cdb[7]) << 16;
1358 lba |= ((u64)cdb[8]) << 8;
1359 lba |= ((u64)cdb[9]);
Albert Lee3aef5232005-10-04 08:47:43 -04001360
Tejun Heo542b1442006-12-17 10:45:08 +09001361 len |= ((u32)cdb[10]) << 24;
1362 len |= ((u32)cdb[11]) << 16;
1363 len |= ((u32)cdb[12]) << 8;
1364 len |= ((u32)cdb[13]);
Albert Lee3aef5232005-10-04 08:47:43 -04001365
1366 *plba = lba;
1367 *plen = len;
1368}
1369
1370/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07001371 * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one
1372 * @qc: Storage for translated ATA taskfile
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373 *
1374 * Converts SCSI VERIFY command to an ATA READ VERIFY command.
1375 *
1376 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04001377 * spin_lock_irqsave(host lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001378 *
1379 * RETURNS:
1380 * Zero on success, non-zero on error.
1381 */
Tejun Heoad706992006-12-17 10:45:57 +09001382static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383{
Tejun Heo542b1442006-12-17 10:45:08 +09001384 struct scsi_cmnd *scmd = qc->scsicmd;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001385 struct ata_taskfile *tf = &qc->tf;
Albert Lee8bf62ece2005-05-12 15:29:42 -04001386 struct ata_device *dev = qc->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001387 u64 dev_sectors = qc->dev->n_sectors;
Tejun Heoad706992006-12-17 10:45:57 +09001388 const u8 *cdb = scmd->cmnd;
Albert Lee3aef5232005-10-04 08:47:43 -04001389 u64 block;
1390 u32 n_block;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001391 u16 fp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001392
1393 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
1394 tf->protocol = ATA_PROT_NODATA;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001395
Tejun Heo2e5704f2006-12-17 10:46:33 +09001396 if (cdb[0] == VERIFY) {
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001397 if (scmd->cmd_len < 10) {
1398 fp = 9;
Tejun Heo2e5704f2006-12-17 10:46:33 +09001399 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001400 }
Tejun Heo542b1442006-12-17 10:45:08 +09001401 scsi_10_lba_len(cdb, &block, &n_block);
Tejun Heo2e5704f2006-12-17 10:46:33 +09001402 } else if (cdb[0] == VERIFY_16) {
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001403 if (scmd->cmd_len < 16) {
1404 fp = 15;
Tejun Heo2e5704f2006-12-17 10:46:33 +09001405 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001406 }
Tejun Heo542b1442006-12-17 10:45:08 +09001407 scsi_16_lba_len(cdb, &block, &n_block);
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001408 } else {
1409 fp = 0;
Douglas Gilbertae006512005-10-09 09:09:35 -04001410 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001411 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001412
Albert Lee8bf62ece2005-05-12 15:29:42 -04001413 if (!n_block)
Douglas Gilbertae006512005-10-09 09:09:35 -04001414 goto nothing_to_do;
Albert Lee8bf62ece2005-05-12 15:29:42 -04001415 if (block >= dev_sectors)
Douglas Gilbertae006512005-10-09 09:09:35 -04001416 goto out_of_range;
Albert Lee8bf62ece2005-05-12 15:29:42 -04001417 if ((block + n_block) > dev_sectors)
Douglas Gilbertae006512005-10-09 09:09:35 -04001418 goto out_of_range;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001419
Albert Lee07506692005-10-12 15:04:18 +08001420 if (dev->flags & ATA_DFLAG_LBA) {
1421 tf->flags |= ATA_TFLAG_LBA;
1422
Albert Leec6a33e22005-10-12 15:12:26 +08001423 if (lba_28_ok(block, n_block)) {
1424 /* use LBA28 */
1425 tf->command = ATA_CMD_VERIFY;
1426 tf->device |= (block >> 24) & 0xf;
1427 } else if (lba_48_ok(block, n_block)) {
1428 if (!(dev->flags & ATA_DFLAG_LBA48))
1429 goto out_of_range;
Albert Lee07506692005-10-12 15:04:18 +08001430
1431 /* use LBA48 */
1432 tf->flags |= ATA_TFLAG_LBA48;
Albert Lee8bf62ece2005-05-12 15:29:42 -04001433 tf->command = ATA_CMD_VERIFY_EXT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001434
Albert Lee8bf62ece2005-05-12 15:29:42 -04001435 tf->hob_nsect = (n_block >> 8) & 0xff;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001436
Albert Lee8bf62ece2005-05-12 15:29:42 -04001437 tf->hob_lbah = (block >> 40) & 0xff;
1438 tf->hob_lbam = (block >> 32) & 0xff;
1439 tf->hob_lbal = (block >> 24) & 0xff;
Albert Leec6a33e22005-10-12 15:12:26 +08001440 } else
1441 /* request too large even for LBA48 */
1442 goto out_of_range;
Albert Lee8bf62ece2005-05-12 15:29:42 -04001443
1444 tf->nsect = n_block & 0xff;
1445
1446 tf->lbah = (block >> 16) & 0xff;
1447 tf->lbam = (block >> 8) & 0xff;
1448 tf->lbal = block & 0xff;
1449
1450 tf->device |= ATA_LBA;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001451 } else {
Albert Lee8bf62ece2005-05-12 15:29:42 -04001452 /* CHS */
1453 u32 sect, head, cyl, track;
1454
Albert Leec6a33e22005-10-12 15:12:26 +08001455 if (!lba_28_ok(block, n_block))
1456 goto out_of_range;
Albert Lee07506692005-10-12 15:04:18 +08001457
Albert Lee8bf62ece2005-05-12 15:29:42 -04001458 /* Convert LBA to CHS */
1459 track = (u32)block / dev->sectors;
1460 cyl = track / dev->heads;
1461 head = track % dev->heads;
1462 sect = (u32)block % dev->sectors + 1;
1463
Albert Leec187c4b2005-10-04 08:46:51 -04001464 DPRINTK("block %u track %u cyl %u head %u sect %u\n",
1465 (u32)block, track, cyl, head, sect);
Jeff Garzik2e9edbf2006-03-24 09:56:57 -05001466
1467 /* Check whether the converted CHS can fit.
1468 Cylinder: 0-65535
Albert Lee8bf62ece2005-05-12 15:29:42 -04001469 Head: 0-15
1470 Sector: 1-255*/
Jeff Garzik2e9edbf2006-03-24 09:56:57 -05001471 if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect))
Douglas Gilbertae006512005-10-09 09:09:35 -04001472 goto out_of_range;
Jeff Garzik2e9edbf2006-03-24 09:56:57 -05001473
Linus Torvalds1da177e2005-04-16 15:20:36 -07001474 tf->command = ATA_CMD_VERIFY;
Albert Lee8bf62ece2005-05-12 15:29:42 -04001475 tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */
1476 tf->lbal = sect;
1477 tf->lbam = cyl;
1478 tf->lbah = cyl >> 8;
1479 tf->device |= head;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001480 }
1481
Linus Torvalds1da177e2005-04-16 15:20:36 -07001482 return 0;
Douglas Gilbertae006512005-10-09 09:09:35 -04001483
1484invalid_fld:
Hannes Reinecke0df10b82016-04-04 11:44:06 +02001485 ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff);
Douglas Gilbertae006512005-10-09 09:09:35 -04001486 return 1;
1487
1488out_of_range:
Hannes Reinecke06dbde52016-04-04 11:44:03 +02001489 ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0);
Douglas Gilbertae006512005-10-09 09:09:35 -04001490 /* "Logical Block Address out of range" */
1491 return 1;
1492
1493nothing_to_do:
Tejun Heo542b1442006-12-17 10:45:08 +09001494 scmd->result = SAM_STAT_GOOD;
Douglas Gilbertae006512005-10-09 09:09:35 -04001495 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001496}
1497
Jens Axboe2d727152019-08-07 12:20:52 -06001498static bool ata_check_nblocks(struct scsi_cmnd *scmd, u32 n_blocks)
1499{
1500 struct request *rq = scmd->request;
1501 u32 req_blocks;
1502
1503 if (!blk_rq_is_passthrough(rq))
1504 return true;
1505
1506 req_blocks = blk_rq_bytes(rq) / scmd->device->sector_size;
1507 if (n_blocks > req_blocks)
1508 return false;
1509
1510 return true;
1511}
1512
Linus Torvalds1da177e2005-04-16 15:20:36 -07001513/**
1514 * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one
1515 * @qc: Storage for translated ATA taskfile
Linus Torvalds1da177e2005-04-16 15:20:36 -07001516 *
1517 * Converts any of six SCSI read/write commands into the
1518 * ATA counterpart, including starting sector (LBA),
1519 * sector count, and taking into account the device's LBA48
1520 * support.
1521 *
1522 * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and
1523 * %WRITE_16 are currently supported.
1524 *
1525 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04001526 * spin_lock_irqsave(host lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001527 *
1528 * RETURNS:
1529 * Zero on success, non-zero on error.
1530 */
Tejun Heoad706992006-12-17 10:45:57 +09001531static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001532{
Tejun Heo542b1442006-12-17 10:45:08 +09001533 struct scsi_cmnd *scmd = qc->scsicmd;
Tejun Heoad706992006-12-17 10:45:57 +09001534 const u8 *cdb = scmd->cmnd;
Adam Manzanares8e061782016-10-17 11:27:29 -07001535 struct request *rq = scmd->request;
1536 int class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq));
Tejun Heobd056d72006-11-14 22:47:10 +09001537 unsigned int tf_flags = 0;
Albert Lee3aef5232005-10-04 08:47:43 -04001538 u64 block;
1539 u32 n_block;
Tejun Heobd056d72006-11-14 22:47:10 +09001540 int rc;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001541 u16 fp = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001542
Tejun Heo542b1442006-12-17 10:45:08 +09001543 if (cdb[0] == WRITE_10 || cdb[0] == WRITE_6 || cdb[0] == WRITE_16)
Tejun Heobd056d72006-11-14 22:47:10 +09001544 tf_flags |= ATA_TFLAG_WRITE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001545
Tejun Heo9a3dccc2006-01-06 09:56:18 +01001546 /* Calculate the SCSI LBA, transfer length and FUA. */
Tejun Heo542b1442006-12-17 10:45:08 +09001547 switch (cdb[0]) {
Albert Lee3aef5232005-10-04 08:47:43 -04001548 case READ_10:
1549 case WRITE_10:
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001550 if (unlikely(scmd->cmd_len < 10)) {
1551 fp = 9;
Tejun Heo2e5704f2006-12-17 10:46:33 +09001552 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001553 }
Tejun Heo542b1442006-12-17 10:45:08 +09001554 scsi_10_lba_len(cdb, &block, &n_block);
Jeff Garzik3e451a42012-08-17 14:04:50 -04001555 if (cdb[1] & (1 << 3))
Tejun Heobd056d72006-11-14 22:47:10 +09001556 tf_flags |= ATA_TFLAG_FUA;
Jens Axboe2d727152019-08-07 12:20:52 -06001557 if (!ata_check_nblocks(scmd, n_block))
1558 goto invalid_fld;
Albert Lee3aef5232005-10-04 08:47:43 -04001559 break;
1560 case READ_6:
1561 case WRITE_6:
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001562 if (unlikely(scmd->cmd_len < 6)) {
1563 fp = 5;
Tejun Heo2e5704f2006-12-17 10:46:33 +09001564 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001565 }
Tejun Heo542b1442006-12-17 10:45:08 +09001566 scsi_6_lba_len(cdb, &block, &n_block);
Albert Leec187c4b2005-10-04 08:46:51 -04001567
1568 /* for 6-byte r/w commands, transfer length 0
1569 * means 256 blocks of data, not 0 block.
1570 */
Jeff Garzik76b2bf92005-08-29 19:24:43 -04001571 if (!n_block)
1572 n_block = 256;
Jens Axboe2d727152019-08-07 12:20:52 -06001573 if (!ata_check_nblocks(scmd, n_block))
1574 goto invalid_fld;
Albert Lee3aef5232005-10-04 08:47:43 -04001575 break;
1576 case READ_16:
1577 case WRITE_16:
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001578 if (unlikely(scmd->cmd_len < 16)) {
1579 fp = 15;
Tejun Heo2e5704f2006-12-17 10:46:33 +09001580 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001581 }
Tejun Heo542b1442006-12-17 10:45:08 +09001582 scsi_16_lba_len(cdb, &block, &n_block);
Jeff Garzik3e451a42012-08-17 14:04:50 -04001583 if (cdb[1] & (1 << 3))
Tejun Heobd056d72006-11-14 22:47:10 +09001584 tf_flags |= ATA_TFLAG_FUA;
Jens Axboe2d727152019-08-07 12:20:52 -06001585 if (!ata_check_nblocks(scmd, n_block))
1586 goto invalid_fld;
Albert Lee3aef5232005-10-04 08:47:43 -04001587 break;
1588 default:
Albert Lee8bf62ece2005-05-12 15:29:42 -04001589 DPRINTK("no-byte command\n");
Hannes Reineckebcfc8672016-04-04 11:44:05 +02001590 fp = 0;
Douglas Gilbertae006512005-10-09 09:09:35 -04001591 goto invalid_fld;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001592 }
1593
Albert Lee8bf62ece2005-05-12 15:29:42 -04001594 /* Check and compose ATA command */
1595 if (!n_block)
Albert Leec187c4b2005-10-04 08:46:51 -04001596 /* For 10-byte and 16-byte SCSI R/W commands, transfer
1597 * length 0 means transfer 0 block of data.
1598 * However, for ATA R/W commands, sector count 0 means
1599 * 256 or 65536 sectors, not 0 sectors as in SCSI.
Alan Coxf51750d2005-11-07 17:06:33 +00001600 *
1601 * WARNING: one or two older ATA drives treat 0 as 0...
Albert Leec187c4b2005-10-04 08:46:51 -04001602 */
Douglas Gilbertae006512005-10-09 09:09:35 -04001603 goto nothing_to_do;
Albert Lee8bf62ece2005-05-12 15:29:42 -04001604
Tejun Heobd056d72006-11-14 22:47:10 +09001605 qc->flags |= ATA_QCFLAG_IO;
Grant Grundler295124d2010-08-17 10:56:53 -07001606 qc->nbytes = n_block * scmd->device->sector_size;
Tejun Heo3dc1d882006-05-15 21:03:45 +09001607
Tejun Heobd056d72006-11-14 22:47:10 +09001608 rc = ata_build_rw_tf(&qc->tf, qc->dev, block, n_block, tf_flags,
Jens Axboe4e5b6262018-05-11 12:51:04 -06001609 qc->hw_tag, class);
Adam Manzanares8e061782016-10-17 11:27:29 -07001610
Tejun Heobd056d72006-11-14 22:47:10 +09001611 if (likely(rc == 0))
1612 return 0;
Tejun Heo3dc1d882006-05-15 21:03:45 +09001613
Tejun Heobd056d72006-11-14 22:47:10 +09001614 if (rc == -ERANGE)
1615 goto out_of_range;
1616 /* treat all other errors as -EINVAL, fall through */
Douglas Gilbertae006512005-10-09 09:09:35 -04001617invalid_fld:
Hannes Reinecke0df10b82016-04-04 11:44:06 +02001618 ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff);
Douglas Gilbertae006512005-10-09 09:09:35 -04001619 return 1;
1620
1621out_of_range:
Hannes Reinecke06dbde52016-04-04 11:44:03 +02001622 ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0);
Douglas Gilbertae006512005-10-09 09:09:35 -04001623 /* "Logical Block Address out of range" */
1624 return 1;
1625
1626nothing_to_do:
Tejun Heo542b1442006-12-17 10:45:08 +09001627 scmd->result = SAM_STAT_GOOD;
Douglas Gilbertae006512005-10-09 09:09:35 -04001628 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001629}
1630
Christoph Hellwig2aa8f5d2015-10-08 10:25:41 +02001631static void ata_qc_done(struct ata_queued_cmd *qc)
1632{
1633 struct scsi_cmnd *cmd = qc->scsicmd;
1634 void (*done)(struct scsi_cmnd *) = qc->scsidone;
1635
1636 ata_qc_free(qc);
1637 done(cmd);
1638}
1639
Tejun Heo77853bf2006-01-23 13:09:36 +09001640static void ata_scsi_qc_complete(struct ata_queued_cmd *qc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001641{
Tejun Heoc31f5712006-11-22 12:39:43 +09001642 struct ata_port *ap = qc->ap;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001643 struct scsi_cmnd *cmd = qc->scsicmd;
Jeff Garzika7dac442005-10-30 04:44:42 -05001644 u8 *cdb = cmd->cmnd;
Jeff Garzik2dcb4072007-10-19 06:42:56 -04001645 int need_sense = (qc->err_mask != 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001646
Jeff Garzikb0955182005-05-12 15:45:22 -04001647 /* For ATA pass thru (SAT) commands, generate a sense block if
1648 * user mandated it or if there's an error. Note that if we
Gwendal Grignou84a9a8c2013-01-18 10:56:43 -08001649 * generate because the user forced us to [CK_COND =1], a check
1650 * condition is generated and the ATA register values are returned
Jeff Garzikb0955182005-05-12 15:45:22 -04001651 * whether the command completed successfully or not. If there
Gwendal Grignou84a9a8c2013-01-18 10:56:43 -08001652 * was no error, we use the following sense data:
1653 * sk = RECOVERED ERROR
1654 * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE
Jeff Garzikb0955182005-05-12 15:45:22 -04001655 */
Jeff Garzika7dac442005-10-30 04:44:42 -05001656 if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) &&
Christoph Hellwig25c7ce72015-10-03 19:21:11 +02001657 ((cdb[2] & 0x20) || need_sense))
Tejun Heo750426a2006-11-14 22:37:35 +09001658 ata_gen_passthru_sense(qc);
Hannes Reinecke5b01e4b2016-04-04 11:43:54 +02001659 else if (qc->flags & ATA_QCFLAG_SENSE_VALID)
1660 cmd->result = SAM_STAT_CHECK_CONDITION;
Christoph Hellwig25c7ce72015-10-03 19:21:11 +02001661 else if (need_sense)
1662 ata_gen_ata_sense(qc);
1663 else
1664 cmd->result = SAM_STAT_GOOD;
Jeff Garzikb0955182005-05-12 15:45:22 -04001665
Tejun Heoc31f5712006-11-22 12:39:43 +09001666 if (need_sense && !ap->ops->error_handler)
Tejun Heo44877b42007-02-21 01:06:51 +09001667 ata_dump_status(ap->print_id, &qc->result_tf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001668
Christoph Hellwig2aa8f5d2015-10-08 10:25:41 +02001669 ata_qc_done(qc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001670}
1671
1672/**
1673 * ata_scsi_translate - Translate then issue SCSI command to ATA device
Linus Torvalds1da177e2005-04-16 15:20:36 -07001674 * @dev: ATA device to which the command is addressed
1675 * @cmd: SCSI command to execute
Linus Torvalds1da177e2005-04-16 15:20:36 -07001676 * @xlat_func: Actor which translates @cmd to an ATA taskfile
1677 *
1678 * Our ->queuecommand() function has decided that the SCSI
1679 * command issued can be directly translated into an ATA
1680 * command, rather than handled internally.
1681 *
1682 * This function sets up an ata_queued_cmd structure for the
1683 * SCSI command, and sends that ata_queued_cmd to the hardware.
1684 *
Douglas Gilbertae006512005-10-09 09:09:35 -04001685 * The xlat_func argument (actor) returns 0 if ready to execute
1686 * ATA command, else 1 to finish translation. If 1 is returned
1687 * then cmd->result (and possibly cmd->sense_buffer) are assumed
1688 * to be set reflecting an error condition or clean (early)
1689 * termination.
1690 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07001691 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04001692 * spin_lock_irqsave(host lock)
Tejun Heo2115ea92006-05-15 21:03:39 +09001693 *
1694 * RETURNS:
1695 * 0 on success, SCSI_ML_QUEUE_DEVICE_BUSY if the command
1696 * needs to be deferred.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001697 */
Tejun Heo2115ea92006-05-15 21:03:39 +09001698static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd,
Tejun Heo2115ea92006-05-15 21:03:39 +09001699 ata_xlat_func_t xlat_func)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001700{
Tejun Heo31cc23b2007-09-23 13:14:12 +09001701 struct ata_port *ap = dev->link->ap;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001702 struct ata_queued_cmd *qc;
Tejun Heo31cc23b2007-09-23 13:14:12 +09001703 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001704
1705 VPRINTK("ENTER\n");
1706
Jeff Garzikb27dcfb2010-11-17 22:56:48 -05001707 qc = ata_scsi_qc_new(dev, cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001708 if (!qc)
Douglas Gilbertae006512005-10-09 09:09:35 -04001709 goto err_mem;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001710
1711 /* data is present; dma-map it */
be7db052005-04-17 15:26:13 -05001712 if (cmd->sc_data_direction == DMA_FROM_DEVICE ||
1713 cmd->sc_data_direction == DMA_TO_DEVICE) {
Boaz Harrosh7120165c2007-09-18 17:48:50 +02001714 if (unlikely(scsi_bufflen(cmd) < 1)) {
Joe Perchesa9a79df2011-04-15 15:51:59 -07001715 ata_dev_warn(dev, "WARNING: zero len r/w req\n");
Douglas Gilbertae006512005-10-09 09:09:35 -04001716 goto err_did;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001717 }
1718
Boaz Harrosh7120165c2007-09-18 17:48:50 +02001719 ata_sg_init(qc, scsi_sglist(cmd), scsi_sg_count(cmd));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001720
1721 qc->dma_dir = cmd->sc_data_direction;
1722 }
1723
1724 qc->complete_fn = ata_scsi_qc_complete;
1725
Tejun Heoad706992006-12-17 10:45:57 +09001726 if (xlat_func(qc))
Douglas Gilbertae006512005-10-09 09:09:35 -04001727 goto early_finish;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001728
Tejun Heo31cc23b2007-09-23 13:14:12 +09001729 if (ap->ops->qc_defer) {
1730 if ((rc = ap->ops->qc_defer(qc)))
1731 goto defer;
1732 }
1733
Linus Torvalds1da177e2005-04-16 15:20:36 -07001734 /* select device, send command to hardware */
Tejun Heo8e0e6942006-03-31 20:41:11 +09001735 ata_qc_issue(qc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001736
1737 VPRINTK("EXIT\n");
Tejun Heo2115ea92006-05-15 21:03:39 +09001738 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001739
Douglas Gilbertae006512005-10-09 09:09:35 -04001740early_finish:
Jeff Garzik2dcb4072007-10-19 06:42:56 -04001741 ata_qc_free(qc);
Jeff Garzikb27dcfb2010-11-17 22:56:48 -05001742 cmd->scsi_done(cmd);
Douglas Gilbertae006512005-10-09 09:09:35 -04001743 DPRINTK("EXIT - early finish (good or error)\n");
Tejun Heo2115ea92006-05-15 21:03:39 +09001744 return 0;
Douglas Gilbertae006512005-10-09 09:09:35 -04001745
1746err_did:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001747 ata_qc_free(qc);
Douglas Gilbertae006512005-10-09 09:09:35 -04001748 cmd->result = (DID_ERROR << 16);
Jeff Garzikb27dcfb2010-11-17 22:56:48 -05001749 cmd->scsi_done(cmd);
Darrick J. Wong253b92e2006-11-14 09:55:41 -05001750err_mem:
Douglas Gilbertae006512005-10-09 09:09:35 -04001751 DPRINTK("EXIT - internal\n");
Tejun Heo2115ea92006-05-15 21:03:39 +09001752 return 0;
Tejun Heo3dc1d882006-05-15 21:03:45 +09001753
1754defer:
Tejun Heo31cc23b2007-09-23 13:14:12 +09001755 ata_qc_free(qc);
Tejun Heo3dc1d882006-05-15 21:03:45 +09001756 DPRINTK("EXIT - defer\n");
Tejun Heo31cc23b2007-09-23 13:14:12 +09001757 if (rc == ATA_DEFER_LINK)
1758 return SCSI_MLQUEUE_DEVICE_BUSY;
1759 else
1760 return SCSI_MLQUEUE_HOST_BUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001761}
1762
Christoph Hellwigf0a37d12017-01-10 09:41:44 +01001763struct ata_scsi_args {
1764 struct ata_device *dev;
1765 u16 *id;
1766 struct scsi_cmnd *cmd;
Christoph Hellwigf0a37d12017-01-10 09:41:44 +01001767};
1768
Linus Torvalds1da177e2005-04-16 15:20:36 -07001769/**
1770 * ata_scsi_rbuf_get - Map response buffer.
Randy Dunlapec2a20e2008-04-30 12:57:00 -07001771 * @cmd: SCSI command containing buffer to be mapped.
Tejun Heo87340e92008-04-28 17:48:51 +09001772 * @flags: unsigned long variable to store irq enable status
1773 * @copy_in: copy in from user buffer
Linus Torvalds1da177e2005-04-16 15:20:36 -07001774 *
Tejun Heo87340e92008-04-28 17:48:51 +09001775 * Prepare buffer for simulated SCSI commands.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001776 *
1777 * LOCKING:
Tejun Heo87340e92008-04-28 17:48:51 +09001778 * spin_lock_irqsave(ata_scsi_rbuf_lock) on success
Linus Torvalds1da177e2005-04-16 15:20:36 -07001779 *
1780 * RETURNS:
Tejun Heo87340e92008-04-28 17:48:51 +09001781 * Pointer to response buffer.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001782 */
Tejun Heo87340e92008-04-28 17:48:51 +09001783static void *ata_scsi_rbuf_get(struct scsi_cmnd *cmd, bool copy_in,
1784 unsigned long *flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001785{
Tejun Heo87340e92008-04-28 17:48:51 +09001786 spin_lock_irqsave(&ata_scsi_rbuf_lock, *flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001787
Tejun Heo87340e92008-04-28 17:48:51 +09001788 memset(ata_scsi_rbuf, 0, ATA_SCSI_RBUF_SIZE);
1789 if (copy_in)
1790 sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd),
1791 ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE);
1792 return ata_scsi_rbuf;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001793}
1794
1795/**
1796 * ata_scsi_rbuf_put - Unmap response buffer.
1797 * @cmd: SCSI command containing buffer to be unmapped.
Tejun Heo87340e92008-04-28 17:48:51 +09001798 * @copy_out: copy out result
1799 * @flags: @flags passed to ata_scsi_rbuf_get()
Linus Torvalds1da177e2005-04-16 15:20:36 -07001800 *
Tejun Heo87340e92008-04-28 17:48:51 +09001801 * Returns rbuf buffer. The result is copied to @cmd's buffer if
1802 * @copy_back is true.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001803 *
1804 * LOCKING:
Tejun Heo87340e92008-04-28 17:48:51 +09001805 * Unlocks ata_scsi_rbuf_lock.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001806 */
Tejun Heo87340e92008-04-28 17:48:51 +09001807static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, bool copy_out,
1808 unsigned long *flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001809{
Tejun Heo87340e92008-04-28 17:48:51 +09001810 if (copy_out)
1811 sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd),
1812 ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE);
1813 spin_unlock_irqrestore(&ata_scsi_rbuf_lock, *flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001814}
1815
1816/**
1817 * ata_scsi_rbuf_fill - wrapper for SCSI command simulators
1818 * @args: device IDENTIFY data / SCSI command of interest.
1819 * @actor: Callback hook for desired SCSI command simulator
1820 *
1821 * Takes care of the hard work of simulating a SCSI command...
1822 * Mapping the response buffer, calling the command's handler,
1823 * and handling the handler's return value. This return value
1824 * indicates whether the handler wishes the SCSI command to be
Douglas Gilbertae006512005-10-09 09:09:35 -04001825 * completed successfully (0), or not (in which case cmd->result
1826 * and sense buffer are assumed to be set).
Linus Torvalds1da177e2005-04-16 15:20:36 -07001827 *
1828 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04001829 * spin_lock_irqsave(host lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001830 */
Tejun Heof0761be2008-04-28 17:16:52 +09001831static void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
Tejun Heo87340e92008-04-28 17:48:51 +09001832 unsigned int (*actor)(struct ata_scsi_args *args, u8 *rbuf))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001833{
1834 u8 *rbuf;
Tejun Heo87340e92008-04-28 17:48:51 +09001835 unsigned int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001836 struct scsi_cmnd *cmd = args->cmd;
Jeff Garzikb445c562008-02-29 19:10:51 -05001837 unsigned long flags;
1838
Tejun Heo87340e92008-04-28 17:48:51 +09001839 rbuf = ata_scsi_rbuf_get(cmd, false, &flags);
1840 rc = actor(args, rbuf);
1841 ata_scsi_rbuf_put(cmd, rc == 0, &flags);
Jeff Garzikb445c562008-02-29 19:10:51 -05001842
Douglas Gilbertae006512005-10-09 09:09:35 -04001843 if (rc == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001844 cmd->result = SAM_STAT_GOOD;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001845}
1846
1847/**
1848 * ata_scsiop_inq_std - Simulate INQUIRY command
1849 * @args: device IDENTIFY data / SCSI command of interest.
1850 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001851 *
1852 * Returns standard device identification data associated
Jeff Garzikb142eb62006-03-21 20:37:47 -05001853 * with non-VPD INQUIRY command output.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001854 *
1855 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04001856 * spin_lock_irqsave(host lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001857 */
Tejun Heo87340e92008-04-28 17:48:51 +09001858static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001859{
Colin Ian Kinge94f79142017-09-19 09:39:52 +01001860 static const u8 versions[] = {
Hannes Reineckef9ca5ab2014-11-05 13:08:22 +01001861 0x00,
Tejun Heo87340e92008-04-28 17:48:51 +09001862 0x60, /* SAM-3 (no version claimed) */
1863
1864 0x03,
1865 0x20, /* SBC-2 (no version claimed) */
1866
Tom Yan29a37ea2016-07-12 21:29:35 +08001867 0x03,
1868 0x00 /* SPC-3 (no version claimed) */
Tejun Heo87340e92008-04-28 17:48:51 +09001869 };
Colin Ian Kinge94f79142017-09-19 09:39:52 +01001870 static const u8 versions_zbc[] = {
Hannes Reineckef9ca5ab2014-11-05 13:08:22 +01001871 0x00,
1872 0xA0, /* SAM-5 (no version claimed) */
1873
Hannes Reinecke856c4662016-04-25 12:45:55 +02001874 0x06,
1875 0x00, /* SBC-4 (no version claimed) */
Hannes Reineckef9ca5ab2014-11-05 13:08:22 +01001876
Hannes Reinecke856c4662016-04-25 12:45:55 +02001877 0x05,
1878 0xC0, /* SPC-5 (no version claimed) */
Hannes Reineckef9ca5ab2014-11-05 13:08:22 +01001879
1880 0x60,
Hannes Reinecke856c4662016-04-25 12:45:55 +02001881 0x24, /* ZBC r05 */
Hannes Reineckef9ca5ab2014-11-05 13:08:22 +01001882 };
1883
Linus Torvalds1da177e2005-04-16 15:20:36 -07001884 u8 hdr[] = {
1885 TYPE_DISK,
1886 0,
1887 0x5, /* claim SPC-3 version compatibility */
1888 2,
Tom Yan415ffdd2016-07-12 21:29:34 +08001889 95 - 4,
1890 0,
1891 0,
1892 2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001893 };
1894
Tejun Heo87340e92008-04-28 17:48:51 +09001895 VPRINTK("ENTER\n");
1896
Manuel Lauss8a3e33c2015-09-30 21:10:25 +02001897 /* set scsi removable (RMB) bit per ata bit, or if the
1898 * AHCI port says it's external (Hotplug-capable, eSATA).
1899 */
1900 if (ata_id_removable(args->id) ||
1901 (args->dev->link->ap->pflags & ATA_PFLAG_EXTERNAL))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001902 hdr[1] |= (1 << 7);
1903
Tom Yan56b8cba2016-07-12 22:12:01 +08001904 if (args->dev->class == ATA_DEV_ZAC) {
Hannes Reineckef9ca5ab2014-11-05 13:08:22 +01001905 hdr[0] = TYPE_ZBC;
Tom Yan56b8cba2016-07-12 22:12:01 +08001906 hdr[2] = 0x7; /* claim SPC-5 version compatibility */
1907 }
Hannes Reineckef9ca5ab2014-11-05 13:08:22 +01001908
Linus Torvalds1da177e2005-04-16 15:20:36 -07001909 memcpy(rbuf, hdr, sizeof(hdr));
Tejun Heo87340e92008-04-28 17:48:51 +09001910 memcpy(&rbuf[8], "ATA ", 8);
1911 ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16);
Keith Buschc49a6bf2014-05-01 11:12:03 -06001912
1913 /* From SAT, use last 2 words from fw rev unless they are spaces */
1914 ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV + 2, 4);
1915 if (strncmp(&rbuf[32], " ", 4) == 0)
1916 ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001917
Tejun Heo87340e92008-04-28 17:48:51 +09001918 if (rbuf[32] == 0 || rbuf[32] == ' ')
1919 memcpy(&rbuf[32], "n/a ", 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001920
Hannes Reinecke856c4662016-04-25 12:45:55 +02001921 if (ata_id_zoned_cap(args->id) || args->dev->class == ATA_DEV_ZAC)
Hannes Reineckef9ca5ab2014-11-05 13:08:22 +01001922 memcpy(rbuf + 58, versions_zbc, sizeof(versions_zbc));
1923 else
1924 memcpy(rbuf + 58, versions, sizeof(versions));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001925
1926 return 0;
1927}
1928
1929/**
Jeff Garzikb142eb62006-03-21 20:37:47 -05001930 * ata_scsiop_inq_00 - Simulate INQUIRY VPD page 0, list of pages
Linus Torvalds1da177e2005-04-16 15:20:36 -07001931 * @args: device IDENTIFY data / SCSI command of interest.
1932 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001933 *
Jeff Garzikb142eb62006-03-21 20:37:47 -05001934 * Returns list of inquiry VPD pages available.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001935 *
1936 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04001937 * spin_lock_irqsave(host lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001938 */
Tejun Heo87340e92008-04-28 17:48:51 +09001939static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001940{
Hannes Reinecke6d1003a2016-04-25 12:45:56 +02001941 int num_pages;
Colin Ian Kinge94f79142017-09-19 09:39:52 +01001942 static const u8 pages[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001943 0x00, /* page 0x00, this page */
1944 0x80, /* page 0x80, unit serial no page */
Matthew Wilcox1e9dbc92008-06-19 13:13:38 -06001945 0x83, /* page 0x83, device ident page */
1946 0x89, /* page 0x89, ata info page */
Christoph Hellwig18f0f972009-11-17 10:00:47 -05001947 0xb0, /* page 0xb0, block limits page */
Matthew Wilcox1e9dbc92008-06-19 13:13:38 -06001948 0xb1, /* page 0xb1, block device characteristics page */
Martin K. Petersen02e0a602010-09-10 01:23:18 -04001949 0xb2, /* page 0xb2, thin provisioning page */
Hannes Reinecke6d1003a2016-04-25 12:45:56 +02001950 0xb6, /* page 0xb6, zoned block device characteristics */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001951 };
Tejun Heo87340e92008-04-28 17:48:51 +09001952
Hannes Reinecke6d1003a2016-04-25 12:45:56 +02001953 num_pages = sizeof(pages);
1954 if (!(args->dev->flags & ATA_DFLAG_ZAC))
1955 num_pages--;
1956 rbuf[3] = num_pages; /* number of supported VPD pages */
1957 memcpy(rbuf + 4, pages, num_pages);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001958 return 0;
1959}
1960
1961/**
Jeff Garzikb142eb62006-03-21 20:37:47 -05001962 * ata_scsiop_inq_80 - Simulate INQUIRY VPD page 80, device serial number
Linus Torvalds1da177e2005-04-16 15:20:36 -07001963 * @args: device IDENTIFY data / SCSI command of interest.
1964 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001965 *
1966 * Returns ATA device serial number.
1967 *
1968 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04001969 * spin_lock_irqsave(host lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001970 */
Tejun Heo87340e92008-04-28 17:48:51 +09001971static unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001972{
Colin Ian Kinge94f79142017-09-19 09:39:52 +01001973 static const u8 hdr[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001974 0,
1975 0x80, /* this page code */
1976 0,
Tejun Heoa0cf7332007-01-02 20:18:49 +09001977 ATA_ID_SERNO_LEN, /* page len */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001978 };
Tejun Heo87340e92008-04-28 17:48:51 +09001979
Linus Torvalds1da177e2005-04-16 15:20:36 -07001980 memcpy(rbuf, hdr, sizeof(hdr));
Tejun Heo87340e92008-04-28 17:48:51 +09001981 ata_id_string(args->id, (unsigned char *) &rbuf[4],
1982 ATA_ID_SERNO, ATA_ID_SERNO_LEN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001983 return 0;
1984}
1985
Linus Torvalds1da177e2005-04-16 15:20:36 -07001986/**
Jeff Garzikb142eb62006-03-21 20:37:47 -05001987 * ata_scsiop_inq_83 - Simulate INQUIRY VPD page 83, device identity
Linus Torvalds1da177e2005-04-16 15:20:36 -07001988 * @args: device IDENTIFY data / SCSI command of interest.
1989 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001990 *
Jeff Garzikb142eb62006-03-21 20:37:47 -05001991 * Yields two logical unit device identification designators:
1992 * - vendor specific ASCII containing the ATA serial number
1993 * - SAT defined "t10 vendor id based" containing ASCII vendor
1994 * name ("ATA "), model and serial numbers.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001995 *
1996 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04001997 * spin_lock_irqsave(host lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001998 */
Tejun Heo87340e92008-04-28 17:48:51 +09001999static unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002000{
Jeff Garzikb142eb62006-03-21 20:37:47 -05002001 const int sat_model_serial_desc_len = 68;
Tejun Heo87340e92008-04-28 17:48:51 +09002002 int num;
Jeff Garzikb142eb62006-03-21 20:37:47 -05002003
Linus Torvalds1da177e2005-04-16 15:20:36 -07002004 rbuf[1] = 0x83; /* this page code */
Jeff Garzikb142eb62006-03-21 20:37:47 -05002005 num = 4;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002006
Tejun Heo87340e92008-04-28 17:48:51 +09002007 /* piv=0, assoc=lu, code_set=ACSII, designator=vendor */
2008 rbuf[num + 0] = 2;
2009 rbuf[num + 3] = ATA_ID_SERNO_LEN;
2010 num += 4;
2011 ata_id_string(args->id, (unsigned char *) rbuf + num,
2012 ATA_ID_SERNO, ATA_ID_SERNO_LEN);
2013 num += ATA_ID_SERNO_LEN;
2014
2015 /* SAT defined lu model and serial numbers descriptor */
2016 /* piv=0, assoc=lu, code_set=ACSII, designator=t10 vendor id */
2017 rbuf[num + 0] = 2;
2018 rbuf[num + 1] = 1;
2019 rbuf[num + 3] = sat_model_serial_desc_len;
2020 num += 4;
2021 memcpy(rbuf + num, "ATA ", 8);
2022 num += 8;
2023 ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_PROD,
2024 ATA_ID_PROD_LEN);
2025 num += ATA_ID_PROD_LEN;
2026 ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_SERNO,
2027 ATA_ID_SERNO_LEN);
2028 num += ATA_ID_SERNO_LEN;
2029
Hannes Reinecke6b3b9d72011-03-07 08:56:44 +01002030 if (ata_id_has_wwn(args->id)) {
2031 /* SAT defined lu world wide name */
2032 /* piv=0, assoc=lu, code_set=binary, designator=NAA */
2033 rbuf[num + 0] = 1;
2034 rbuf[num + 1] = 3;
2035 rbuf[num + 3] = ATA_ID_WWN_LEN;
2036 num += 4;
2037 ata_id_string(args->id, (unsigned char *) rbuf + num,
2038 ATA_ID_WWN, ATA_ID_WWN_LEN);
2039 num += ATA_ID_WWN_LEN;
2040 }
Jeff Garzikb142eb62006-03-21 20:37:47 -05002041 rbuf[3] = num - 4; /* page len (assume less than 256 bytes) */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002042 return 0;
2043}
2044
2045/**
Jeff Garzikad355b42007-09-21 20:38:03 -04002046 * ata_scsiop_inq_89 - Simulate INQUIRY VPD page 89, ATA info
2047 * @args: device IDENTIFY data / SCSI command of interest.
2048 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
Jeff Garzikad355b42007-09-21 20:38:03 -04002049 *
2050 * Yields SAT-specified ATA VPD page.
2051 *
2052 * LOCKING:
2053 * spin_lock_irqsave(host lock)
2054 */
Tejun Heo87340e92008-04-28 17:48:51 +09002055static unsigned int ata_scsiop_inq_89(struct ata_scsi_args *args, u8 *rbuf)
Jeff Garzikad355b42007-09-21 20:38:03 -04002056{
Tejun Heo87340e92008-04-28 17:48:51 +09002057 rbuf[1] = 0x89; /* our page code */
2058 rbuf[2] = (0x238 >> 8); /* page size fixed at 238h */
2059 rbuf[3] = (0x238 & 0xff);
Jeff Garzikad355b42007-09-21 20:38:03 -04002060
Tejun Heo87340e92008-04-28 17:48:51 +09002061 memcpy(&rbuf[8], "linux ", 8);
2062 memcpy(&rbuf[16], "libata ", 16);
2063 memcpy(&rbuf[32], DRV_VERSION, 4);
Jeff Garzikad355b42007-09-21 20:38:03 -04002064
Tejun Heo87340e92008-04-28 17:48:51 +09002065 rbuf[36] = 0x34; /* force D2H Reg FIS (34h) */
Bartlomiej Zolnierkiewicz33531002020-03-26 16:58:00 +01002066 rbuf[37] = (1 << 7); /* bit 7 indicates Command FIS */
2067 /* TODO: PMP? */
2068
2069 /* we don't store the ATA device signature, so we fake it */
2070 rbuf[38] = ATA_DRDY; /* really, this is Status reg */
2071 rbuf[40] = 0x1;
2072 rbuf[48] = 0x1;
Jeff Garzikad355b42007-09-21 20:38:03 -04002073
Tejun Heo87340e92008-04-28 17:48:51 +09002074 rbuf[56] = ATA_CMD_ID_ATA;
Jeff Garzikad355b42007-09-21 20:38:03 -04002075
Tejun Heo87340e92008-04-28 17:48:51 +09002076 memcpy(&rbuf[60], &args->id[0], 512);
Jeff Garzikad355b42007-09-21 20:38:03 -04002077 return 0;
2078}
2079
Christoph Hellwig18f0f972009-11-17 10:00:47 -05002080static unsigned int ata_scsiop_inq_b0(struct ata_scsi_args *args, u8 *rbuf)
2081{
Tejun Heo3b545562020-09-02 12:32:45 -04002082 struct ata_device *dev = args->dev;
Grant Grundler295124d2010-08-17 10:56:53 -07002083 u16 min_io_sectors;
Christoph Hellwig18f0f972009-11-17 10:00:47 -05002084
2085 rbuf[1] = 0xb0;
2086 rbuf[3] = 0x3c; /* required VPD size with unmap support */
2087
2088 /*
2089 * Optimal transfer length granularity.
2090 *
2091 * This is always one physical block, but for disks with a smaller
2092 * logical than physical sector size we need to figure out what the
2093 * latter is.
2094 */
Grant Grundler295124d2010-08-17 10:56:53 -07002095 min_io_sectors = 1 << ata_id_log2_per_physical_sector(args->id);
Christoph Hellwig18f0f972009-11-17 10:00:47 -05002096 put_unaligned_be16(min_io_sectors, &rbuf[6]);
2097
2098 /*
2099 * Optimal unmap granularity.
2100 *
2101 * The ATA spec doesn't even know about a granularity or alignment
2102 * for the TRIM command. We can leave away most of the unmap related
2103 * VPD page entries, but we have specifify a granularity to signal
2104 * that we support some form of unmap - in thise case via WRITE SAME
2105 * with the unmap bit set.
2106 */
Martin K. Petersene78db4d2009-11-26 22:46:03 -05002107 if (ata_id_has_trim(args->id)) {
Tejun Heo3b545562020-09-02 12:32:45 -04002108 u64 max_blocks = 65535 * ATA_MAX_TRIM_RNUM;
2109
2110 if (dev->horkage & ATA_HORKAGE_MAX_TRIM_128M)
2111 max_blocks = 128 << (20 - SECTOR_SHIFT);
2112
2113 put_unaligned_be64(max_blocks, &rbuf[36]);
Christoph Hellwig18f0f972009-11-17 10:00:47 -05002114 put_unaligned_be32(1, &rbuf[28]);
Martin K. Petersene78db4d2009-11-26 22:46:03 -05002115 }
Christoph Hellwig18f0f972009-11-17 10:00:47 -05002116
2117 return 0;
2118}
2119
Matthew Wilcox1e9dbc92008-06-19 13:13:38 -06002120static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf)
2121{
Martin K. Petersen4bca3282009-05-15 00:40:35 -04002122 int form_factor = ata_id_form_factor(args->id);
2123 int media_rotation_rate = ata_id_rotation_rate(args->id);
Hannes Reinecke856c4662016-04-25 12:45:55 +02002124 u8 zoned = ata_id_zoned_cap(args->id);
Martin K. Petersen4bca3282009-05-15 00:40:35 -04002125
Matthew Wilcox1e9dbc92008-06-19 13:13:38 -06002126 rbuf[1] = 0xb1;
2127 rbuf[3] = 0x3c;
Martin K. Petersen4bca3282009-05-15 00:40:35 -04002128 rbuf[4] = media_rotation_rate >> 8;
2129 rbuf[5] = media_rotation_rate;
2130 rbuf[7] = form_factor;
Hannes Reinecke856c4662016-04-25 12:45:55 +02002131 if (zoned)
2132 rbuf[8] = (zoned << 4);
Matthew Wilcox1e9dbc92008-06-19 13:13:38 -06002133
2134 return 0;
2135}
2136
Martin K. Petersen02e0a602010-09-10 01:23:18 -04002137static unsigned int ata_scsiop_inq_b2(struct ata_scsi_args *args, u8 *rbuf)
2138{
2139 /* SCSI Thin Provisioning VPD page: SBC-3 rev 22 or later */
2140 rbuf[1] = 0xb2;
2141 rbuf[3] = 0x4;
2142 rbuf[5] = 1 << 6; /* TPWS */
2143
2144 return 0;
2145}
2146
Hannes Reinecke6d1003a2016-04-25 12:45:56 +02002147static unsigned int ata_scsiop_inq_b6(struct ata_scsi_args *args, u8 *rbuf)
2148{
2149 /*
2150 * zbc-r05 SCSI Zoned Block device characteristics VPD page
2151 */
2152 rbuf[1] = 0xb6;
2153 rbuf[3] = 0x3C;
2154
2155 /*
2156 * URSWRZ bit is only meaningful for host-managed ZAC drives
2157 */
2158 if (args->dev->zac_zoned_cap & 1)
2159 rbuf[4] |= 1;
2160 put_unaligned_be32(args->dev->zac_zones_optimal_open, &rbuf[8]);
2161 put_unaligned_be32(args->dev->zac_zones_optimal_nonseq, &rbuf[12]);
2162 put_unaligned_be32(args->dev->zac_zones_max_open, &rbuf[16]);
2163
2164 return 0;
2165}
2166
Jeff Garzikad355b42007-09-21 20:38:03 -04002167/**
Paolo Bonzini6ca8e792012-07-05 14:18:20 +02002168 * modecpy - Prepare response for MODE SENSE
2169 * @dest: output buffer
2170 * @src: data being copied
2171 * @n: length of mode page
2172 * @changeable: whether changeable parameters are requested
2173 *
2174 * Generate a generic MODE SENSE page for either current or changeable
2175 * parameters.
2176 *
2177 * LOCKING:
2178 * None.
2179 */
2180static void modecpy(u8 *dest, const u8 *src, int n, bool changeable)
2181{
2182 if (changeable) {
2183 memcpy(dest, src, 2);
2184 memset(dest + 2, 0, n - 2);
2185 } else {
2186 memcpy(dest, src, n);
2187 }
2188}
2189
2190/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07002191 * ata_msense_caching - Simulate MODE SENSE caching info page
2192 * @id: device IDENTIFY data
Tejun Heo87340e92008-04-28 17:48:51 +09002193 * @buf: output buffer
Paolo Bonzini6ca8e792012-07-05 14:18:20 +02002194 * @changeable: whether changeable parameters are requested
Linus Torvalds1da177e2005-04-16 15:20:36 -07002195 *
2196 * Generate a caching info page, which conditionally indicates
2197 * write caching to the SCSI layer, depending on device
2198 * capabilities.
2199 *
2200 * LOCKING:
2201 * None.
2202 */
Paolo Bonzini6ca8e792012-07-05 14:18:20 +02002203static unsigned int ata_msense_caching(u16 *id, u8 *buf, bool changeable)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002204{
Paolo Bonzini6ca8e792012-07-05 14:18:20 +02002205 modecpy(buf, def_cache_mpage, sizeof(def_cache_mpage), changeable);
Tom Yan737bee92016-07-20 04:39:28 +08002206 if (changeable) {
2207 buf[2] |= (1 << 2); /* ata_mselect_caching() */
2208 } else {
2209 buf[2] |= (ata_id_wcache_enabled(id) << 2); /* write cache enable */
2210 buf[12] |= (!ata_id_rahead_enabled(id) << 5); /* disable read ahead */
2211 }
Tejun Heo87340e92008-04-28 17:48:51 +09002212 return sizeof(def_cache_mpage);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002213}
2214
2215/**
Tom Yanf086b742016-07-13 02:54:12 +08002216 * ata_msense_control - Simulate MODE SENSE control mode page
Hannes Reinecke06dbde52016-04-04 11:44:03 +02002217 * @dev: ATA device of interest
Tejun Heo87340e92008-04-28 17:48:51 +09002218 * @buf: output buffer
Paolo Bonzini6ca8e792012-07-05 14:18:20 +02002219 * @changeable: whether changeable parameters are requested
Linus Torvalds1da177e2005-04-16 15:20:36 -07002220 *
2221 * Generate a generic MODE SENSE control mode page.
2222 *
2223 * LOCKING:
2224 * None.
2225 */
Tom Yanf086b742016-07-13 02:54:12 +08002226static unsigned int ata_msense_control(struct ata_device *dev, u8 *buf,
Hannes Reinecke06dbde52016-04-04 11:44:03 +02002227 bool changeable)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002228{
Paolo Bonzini6ca8e792012-07-05 14:18:20 +02002229 modecpy(buf, def_control_mpage, sizeof(def_control_mpage), changeable);
Tom Yan737bee92016-07-20 04:39:28 +08002230 if (changeable) {
2231 buf[2] |= (1 << 2); /* ata_mselect_control() */
2232 } else {
2233 bool d_sense = (dev->flags & ATA_DFLAG_D_SENSE);
2234
2235 buf[2] |= (d_sense << 2); /* descriptor format sense data */
2236 }
Douglas Gilbert00ac37f2005-10-28 15:58:28 -04002237 return sizeof(def_control_mpage);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002238}
2239
2240/**
2241 * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page
Randy Dunlapec2a20e2008-04-30 12:57:00 -07002242 * @buf: output buffer
Paolo Bonzini6ca8e792012-07-05 14:18:20 +02002243 * @changeable: whether changeable parameters are requested
Linus Torvalds1da177e2005-04-16 15:20:36 -07002244 *
2245 * Generate a generic MODE SENSE r/w error recovery page.
2246 *
2247 * LOCKING:
2248 * None.
2249 */
Paolo Bonzini6ca8e792012-07-05 14:18:20 +02002250static unsigned int ata_msense_rw_recovery(u8 *buf, bool changeable)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002251{
Paolo Bonzini6ca8e792012-07-05 14:18:20 +02002252 modecpy(buf, def_rw_recovery_mpage, sizeof(def_rw_recovery_mpage),
2253 changeable);
Douglas Gilbert00ac37f2005-10-28 15:58:28 -04002254 return sizeof(def_rw_recovery_mpage);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002255}
2256
Jens Axboe48bdc8e2006-01-30 16:09:35 +01002257/*
2258 * We can turn this into a real blacklist if it's needed, for now just
2259 * blacklist any Maxtor BANC1G10 revision firmware
2260 */
2261static int ata_dev_supports_fua(u16 *id)
2262{
Tejun Heoa0cf7332007-01-02 20:18:49 +09002263 unsigned char model[ATA_ID_PROD_LEN + 1], fw[ATA_ID_FW_REV_LEN + 1];
Jens Axboe48bdc8e2006-01-30 16:09:35 +01002264
Jeff Garzikc3c013a2006-02-27 22:31:19 -05002265 if (!libata_fua)
2266 return 0;
Jens Axboe48bdc8e2006-01-30 16:09:35 +01002267 if (!ata_id_has_fua(id))
2268 return 0;
2269
Tejun Heoa0cf7332007-01-02 20:18:49 +09002270 ata_id_c_string(id, model, ATA_ID_PROD, sizeof(model));
2271 ata_id_c_string(id, fw, ATA_ID_FW_REV, sizeof(fw));
Jens Axboe48bdc8e2006-01-30 16:09:35 +01002272
Tejun Heo2e026712006-02-12 22:47:04 +09002273 if (strcmp(model, "Maxtor"))
Jens Axboe48bdc8e2006-01-30 16:09:35 +01002274 return 1;
Tejun Heo2e026712006-02-12 22:47:04 +09002275 if (strcmp(fw, "BANC1G10"))
Jens Axboe48bdc8e2006-01-30 16:09:35 +01002276 return 1;
2277
2278 return 0; /* blacklisted */
2279}
2280
Linus Torvalds1da177e2005-04-16 15:20:36 -07002281/**
2282 * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands
2283 * @args: device IDENTIFY data / SCSI command of interest.
2284 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002285 *
Douglas Gilbert00ac37f2005-10-28 15:58:28 -04002286 * Simulate MODE SENSE commands. Assume this is invoked for direct
2287 * access devices (e.g. disks) only. There should be no block
2288 * descriptor for other device types.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002289 *
2290 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04002291 * spin_lock_irqsave(host lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002292 */
Tejun Heo87340e92008-04-28 17:48:51 +09002293static unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002294{
Tejun Heo9a3dccc2006-01-06 09:56:18 +01002295 struct ata_device *dev = args->dev;
Tejun Heo87340e92008-04-28 17:48:51 +09002296 u8 *scsicmd = args->cmd->cmnd, *p = rbuf;
Colin Ian Kinge94f79142017-09-19 09:39:52 +01002297 static const u8 sat_blk_desc[] = {
Douglas Gilbert00ac37f2005-10-28 15:58:28 -04002298 0, 0, 0, 0, /* number of blocks: sat unspecified */
2299 0,
2300 0, 0x2, 0x0 /* block length: 512 bytes */
2301 };
2302 u8 pg, spg;
Tejun Heo87340e92008-04-28 17:48:51 +09002303 unsigned int ebd, page_control, six_byte;
Hannes Reinecke0df10b82016-04-04 11:44:06 +02002304 u8 dpofua, bp = 0xff;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02002305 u16 fp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002306
2307 VPRINTK("ENTER\n");
2308
2309 six_byte = (scsicmd[0] == MODE_SENSE);
Douglas Gilbert00ac37f2005-10-28 15:58:28 -04002310 ebd = !(scsicmd[1] & 0x8); /* dbd bit inverted == edb */
2311 /*
2312 * LLBA bit in msense(10) ignored (compliant)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002313 */
Douglas Gilbert00ac37f2005-10-28 15:58:28 -04002314
Linus Torvalds1da177e2005-04-16 15:20:36 -07002315 page_control = scsicmd[2] >> 6;
Douglas Gilbertae006512005-10-09 09:09:35 -04002316 switch (page_control) {
2317 case 0: /* current */
Paolo Bonzini6ca8e792012-07-05 14:18:20 +02002318 case 1: /* changeable */
2319 case 2: /* defaults */
Douglas Gilbertae006512005-10-09 09:09:35 -04002320 break; /* supported */
2321 case 3: /* saved */
2322 goto saving_not_supp;
Douglas Gilbertae006512005-10-09 09:09:35 -04002323 default:
Hannes Reineckebcfc8672016-04-04 11:44:05 +02002324 fp = 2;
Hannes Reinecke0df10b82016-04-04 11:44:06 +02002325 bp = 6;
Douglas Gilbertae006512005-10-09 09:09:35 -04002326 goto invalid_fld;
2327 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002328
Tejun Heo87340e92008-04-28 17:48:51 +09002329 if (six_byte)
2330 p += 4 + (ebd ? 8 : 0);
2331 else
2332 p += 8 + (ebd ? 8 : 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002333
Douglas Gilbert00ac37f2005-10-28 15:58:28 -04002334 pg = scsicmd[2] & 0x3f;
2335 spg = scsicmd[3];
2336 /*
2337 * No mode subpages supported (yet) but asking for _all_
2338 * subpages may be valid
2339 */
Hannes Reineckebcfc8672016-04-04 11:44:05 +02002340 if (spg && (spg != ALL_SUB_MPAGES)) {
2341 fp = 3;
Douglas Gilbert00ac37f2005-10-28 15:58:28 -04002342 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02002343 }
Douglas Gilbert00ac37f2005-10-28 15:58:28 -04002344
2345 switch(pg) {
2346 case RW_RECOVERY_MPAGE:
Paolo Bonzini6ca8e792012-07-05 14:18:20 +02002347 p += ata_msense_rw_recovery(p, page_control == 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002348 break;
2349
Douglas Gilbert00ac37f2005-10-28 15:58:28 -04002350 case CACHE_MPAGE:
Paolo Bonzini6ca8e792012-07-05 14:18:20 +02002351 p += ata_msense_caching(args->id, p, page_control == 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002352 break;
2353
Tejun Heo87340e92008-04-28 17:48:51 +09002354 case CONTROL_MPAGE:
Tom Yanf086b742016-07-13 02:54:12 +08002355 p += ata_msense_control(args->dev, p, page_control == 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002356 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002357
Douglas Gilbert00ac37f2005-10-28 15:58:28 -04002358 case ALL_MPAGES:
Paolo Bonzini6ca8e792012-07-05 14:18:20 +02002359 p += ata_msense_rw_recovery(p, page_control == 1);
2360 p += ata_msense_caching(args->id, p, page_control == 1);
Tom Yanf086b742016-07-13 02:54:12 +08002361 p += ata_msense_control(args->dev, p, page_control == 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002362 break;
2363
2364 default: /* invalid page code */
Hannes Reineckebcfc8672016-04-04 11:44:05 +02002365 fp = 2;
Douglas Gilbertae006512005-10-09 09:09:35 -04002366 goto invalid_fld;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002367 }
2368
Tejun Heo9a3dccc2006-01-06 09:56:18 +01002369 dpofua = 0;
Alan Coxf79d4092006-05-22 16:55:11 +01002370 if (ata_dev_supports_fua(args->id) && (dev->flags & ATA_DFLAG_LBA48) &&
Tejun Heo9a3dccc2006-01-06 09:56:18 +01002371 (!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count))
2372 dpofua = 1 << 4;
2373
Linus Torvalds1da177e2005-04-16 15:20:36 -07002374 if (six_byte) {
Tejun Heo87340e92008-04-28 17:48:51 +09002375 rbuf[0] = p - rbuf - 1;
2376 rbuf[2] |= dpofua;
Douglas Gilbert00ac37f2005-10-28 15:58:28 -04002377 if (ebd) {
Tejun Heo87340e92008-04-28 17:48:51 +09002378 rbuf[3] = sizeof(sat_blk_desc);
2379 memcpy(rbuf + 4, sat_blk_desc, sizeof(sat_blk_desc));
Douglas Gilbert00ac37f2005-10-28 15:58:28 -04002380 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002381 } else {
Tejun Heo87340e92008-04-28 17:48:51 +09002382 unsigned int output_len = p - rbuf - 2;
2383
Linus Torvalds1da177e2005-04-16 15:20:36 -07002384 rbuf[0] = output_len >> 8;
Tejun Heo87340e92008-04-28 17:48:51 +09002385 rbuf[1] = output_len;
2386 rbuf[3] |= dpofua;
Douglas Gilbert00ac37f2005-10-28 15:58:28 -04002387 if (ebd) {
Tejun Heo87340e92008-04-28 17:48:51 +09002388 rbuf[7] = sizeof(sat_blk_desc);
2389 memcpy(rbuf + 8, sat_blk_desc, sizeof(sat_blk_desc));
Douglas Gilbert00ac37f2005-10-28 15:58:28 -04002390 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002391 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002392 return 0;
Douglas Gilbertae006512005-10-09 09:09:35 -04002393
2394invalid_fld:
Hannes Reinecke0df10b82016-04-04 11:44:06 +02002395 ata_scsi_set_invalid_field(dev, args->cmd, fp, bp);
Douglas Gilbertae006512005-10-09 09:09:35 -04002396 return 1;
2397
2398saving_not_supp:
Hannes Reinecke06dbde52016-04-04 11:44:03 +02002399 ata_scsi_set_sense(dev, args->cmd, ILLEGAL_REQUEST, 0x39, 0x0);
Douglas Gilbertae006512005-10-09 09:09:35 -04002400 /* "Saving parameters not supported" */
2401 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002402}
2403
2404/**
2405 * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands
2406 * @args: device IDENTIFY data / SCSI command of interest.
2407 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002408 *
2409 * Simulate READ CAPACITY commands.
2410 *
2411 * LOCKING:
Tejun Heo6a362612006-11-20 11:15:47 +09002412 * None.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002413 */
Tejun Heo87340e92008-04-28 17:48:51 +09002414static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002415{
Martin K. Petersen61d79a82009-05-15 00:40:34 -04002416 struct ata_device *dev = args->dev;
2417 u64 last_lba = dev->n_sectors - 1; /* LBA of the last block */
Grant Grundler295124d2010-08-17 10:56:53 -07002418 u32 sector_size; /* physical sector size in bytes */
2419 u8 log2_per_phys;
2420 u16 lowest_aligned;
Martin K. Petersen61d79a82009-05-15 00:40:34 -04002421
Grant Grundler295124d2010-08-17 10:56:53 -07002422 sector_size = ata_id_logical_sector_size(dev->id);
2423 log2_per_phys = ata_id_log2_per_physical_sector(dev->id);
2424 lowest_aligned = ata_id_logical_sector_offset(dev->id, log2_per_phys);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002425
2426 VPRINTK("ENTER\n");
2427
Linus Torvalds1da177e2005-04-16 15:20:36 -07002428 if (args->cmd->cmnd[0] == READ_CAPACITY) {
Tejun Heo6a362612006-11-20 11:15:47 +09002429 if (last_lba >= 0xffffffffULL)
2430 last_lba = 0xffffffff;
Philip Pokorny0c144d02005-05-28 01:24:47 -07002431
Linus Torvalds1da177e2005-04-16 15:20:36 -07002432 /* sector count, 32-bit */
Tejun Heo87340e92008-04-28 17:48:51 +09002433 rbuf[0] = last_lba >> (8 * 3);
2434 rbuf[1] = last_lba >> (8 * 2);
2435 rbuf[2] = last_lba >> (8 * 1);
2436 rbuf[3] = last_lba;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002437
2438 /* sector size */
Grant Grundler295124d2010-08-17 10:56:53 -07002439 rbuf[4] = sector_size >> (8 * 3);
2440 rbuf[5] = sector_size >> (8 * 2);
2441 rbuf[6] = sector_size >> (8 * 1);
2442 rbuf[7] = sector_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002443 } else {
2444 /* sector count, 64-bit */
Tejun Heo87340e92008-04-28 17:48:51 +09002445 rbuf[0] = last_lba >> (8 * 7);
2446 rbuf[1] = last_lba >> (8 * 6);
2447 rbuf[2] = last_lba >> (8 * 5);
2448 rbuf[3] = last_lba >> (8 * 4);
2449 rbuf[4] = last_lba >> (8 * 3);
2450 rbuf[5] = last_lba >> (8 * 2);
2451 rbuf[6] = last_lba >> (8 * 1);
2452 rbuf[7] = last_lba;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002453
2454 /* sector size */
Grant Grundler295124d2010-08-17 10:56:53 -07002455 rbuf[ 8] = sector_size >> (8 * 3);
2456 rbuf[ 9] = sector_size >> (8 * 2);
2457 rbuf[10] = sector_size >> (8 * 1);
2458 rbuf[11] = sector_size;
Martin K. Petersen61d79a82009-05-15 00:40:34 -04002459
2460 rbuf[12] = 0;
Grant Grundler295124d2010-08-17 10:56:53 -07002461 rbuf[13] = log2_per_phys;
Martin K. Petersen61d79a82009-05-15 00:40:34 -04002462 rbuf[14] = (lowest_aligned >> 8) & 0x3f;
2463 rbuf[15] = lowest_aligned;
Christoph Hellwig18f0f972009-11-17 10:00:47 -05002464
Arne Fitzenreiter71d126f2015-07-15 13:54:36 +02002465 if (ata_id_has_trim(args->id) &&
2466 !(dev->horkage & ATA_HORKAGE_NOTRIM)) {
Martin K. Petersene61f7d12015-01-08 10:34:27 -05002467 rbuf[14] |= 0x80; /* LBPME */
Martin K. Petersene78db4d2009-11-26 22:46:03 -05002468
Martin K. Petersene61f7d12015-01-08 10:34:27 -05002469 if (ata_id_has_zero_after_trim(args->id) &&
2470 dev->horkage & ATA_HORKAGE_ZERO_AFTER_TRIM) {
2471 ata_dev_info(dev, "Enabling discard_zeroes_data\n");
2472 rbuf[14] |= 0x40; /* LBPRZ */
2473 }
Martin K. Petersene78db4d2009-11-26 22:46:03 -05002474 }
Hannes Reinecke6d1003a2016-04-25 12:45:56 +02002475 if (ata_id_zoned_cap(args->id) ||
2476 args->dev->class == ATA_DEV_ZAC)
2477 rbuf[12] = (1 << 4); /* RC_BASIS */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002478 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002479 return 0;
2480}
2481
2482/**
2483 * ata_scsiop_report_luns - Simulate REPORT LUNS command
2484 * @args: device IDENTIFY data / SCSI command of interest.
2485 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002486 *
2487 * Simulate REPORT LUNS command.
2488 *
2489 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04002490 * spin_lock_irqsave(host lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002491 */
Tejun Heo87340e92008-04-28 17:48:51 +09002492static unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002493{
2494 VPRINTK("ENTER\n");
2495 rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */
2496
2497 return 0;
2498}
2499
Tejun Heo77853bf2006-01-23 13:09:36 +09002500static void atapi_sense_complete(struct ata_queued_cmd *qc)
Jeff Garzika939c962005-10-05 17:09:16 -04002501{
Tejun Heo74e6c8c2006-04-02 18:51:53 +09002502 if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) {
Jeff Garzikc6e6e6662005-11-14 14:50:05 -05002503 /* FIXME: not quite right; we don't want the
2504 * translation of taskfile registers into
2505 * a sense descriptors, since that's only
2506 * correct for ATA, not ATAPI
2507 */
Tejun Heo750426a2006-11-14 22:37:35 +09002508 ata_gen_passthru_sense(qc);
Tejun Heo74e6c8c2006-04-02 18:51:53 +09002509 }
Jeff Garzikc6e6e6662005-11-14 14:50:05 -05002510
Christoph Hellwig2aa8f5d2015-10-08 10:25:41 +02002511 ata_qc_done(qc);
Jeff Garzikc6e6e6662005-11-14 14:50:05 -05002512}
2513
2514/* is it pointless to prefer PIO for "safety reasons"? */
2515static inline int ata_pio_use_silly(struct ata_port *ap)
2516{
2517 return (ap->flags & ATA_FLAG_PIO_DMA);
2518}
2519
2520static void atapi_request_sense(struct ata_queued_cmd *qc)
2521{
2522 struct ata_port *ap = qc->ap;
2523 struct scsi_cmnd *cmd = qc->scsicmd;
Jeff Garzika939c962005-10-05 17:09:16 -04002524
2525 DPRINTK("ATAPI request sense\n");
2526
James Bottomley7ccd7202008-01-17 11:56:24 -06002527 memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
Jeff Garzika939c962005-10-05 17:09:16 -04002528
Tejun Heo127102a2008-04-07 22:47:21 +09002529#ifdef CONFIG_ATA_SFF
James Bottomley855d8542008-04-18 13:18:48 -05002530 if (ap->ops->sff_tf_read)
2531 ap->ops->sff_tf_read(ap, &qc->tf);
Tejun Heo127102a2008-04-07 22:47:21 +09002532#endif
Jeff Garzikc6e6e6662005-11-14 14:50:05 -05002533
2534 /* fill these in, for the case where they are -not- overwritten */
2535 cmd->sense_buffer[0] = 0x70;
2536 cmd->sense_buffer[2] = qc->tf.feature >> 4;
2537
2538 ata_qc_reinit(qc);
2539
Tejun Heo93f8fec2007-12-05 16:43:01 +09002540 /* setup sg table and init transfer direction */
akpm@linux-foundation.orgcadb7342008-01-15 16:01:52 -08002541 sg_init_one(&qc->sgent, cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE);
Tejun Heo93f8fec2007-12-05 16:43:01 +09002542 ata_sg_init(qc, &qc->sgent, 1);
Jeff Garzika939c962005-10-05 17:09:16 -04002543 qc->dma_dir = DMA_FROM_DEVICE;
2544
Tejun Heo6e7846e2006-02-12 23:32:58 +09002545 memset(&qc->cdb, 0, qc->dev->cdb_len);
Jeff Garzika939c962005-10-05 17:09:16 -04002546 qc->cdb[0] = REQUEST_SENSE;
2547 qc->cdb[4] = SCSI_SENSE_BUFFERSIZE;
2548
2549 qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
2550 qc->tf.command = ATA_CMD_PACKET;
2551
Jeff Garzikc6e6e6662005-11-14 14:50:05 -05002552 if (ata_pio_use_silly(ap)) {
Tejun Heo0dc36882007-12-18 16:34:43 -05002553 qc->tf.protocol = ATAPI_PROT_DMA;
Jeff Garzikc6e6e6662005-11-14 14:50:05 -05002554 qc->tf.feature |= ATAPI_PKT_DMA;
2555 } else {
Tejun Heo0dc36882007-12-18 16:34:43 -05002556 qc->tf.protocol = ATAPI_PROT_PIO;
Alan Cox2db78dd2007-10-02 13:53:04 -07002557 qc->tf.lbam = SCSI_SENSE_BUFFERSIZE;
2558 qc->tf.lbah = 0;
Jeff Garzikc6e6e6662005-11-14 14:50:05 -05002559 }
Jeff Garzika939c962005-10-05 17:09:16 -04002560 qc->nbytes = SCSI_SENSE_BUFFERSIZE;
2561
Jeff Garzikc6e6e6662005-11-14 14:50:05 -05002562 qc->complete_fn = atapi_sense_complete;
Jeff Garzika939c962005-10-05 17:09:16 -04002563
Tejun Heo8e0e6942006-03-31 20:41:11 +09002564 ata_qc_issue(qc);
Jeff Garzika939c962005-10-05 17:09:16 -04002565
2566 DPRINTK("EXIT\n");
2567}
2568
Christoph Hellwigaa18da82017-01-10 09:41:43 +01002569/*
2570 * ATAPI devices typically report zero for their SCSI version, and sometimes
2571 * deviate from the spec WRT response data format. If SCSI version is
2572 * reported as zero like normal, then we make the following fixups:
2573 * 1) Fake MMC-5 version, to indicate to the Linux scsi midlayer this is a
2574 * modern device.
2575 * 2) Ensure response data format / ATAPI information are always correct.
2576 */
2577static void atapi_fixup_inquiry(struct scsi_cmnd *cmd)
2578{
2579 u8 buf[4];
2580
2581 sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, 4);
2582 if (buf[2] == 0) {
2583 buf[2] = 0x5;
2584 buf[3] = 0x32;
2585 }
2586 sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, 4);
2587}
2588
Tejun Heo77853bf2006-01-23 13:09:36 +09002589static void atapi_qc_complete(struct ata_queued_cmd *qc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002590{
2591 struct scsi_cmnd *cmd = qc->scsicmd;
Albert Leea22e2eb2005-12-05 15:38:02 +08002592 unsigned int err_mask = qc->err_mask;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002593
Jeff Garzika7dac442005-10-30 04:44:42 -05002594 VPRINTK("ENTER, err_mask 0x%X\n", err_mask);
Jeff Garzike12669e2005-10-05 18:39:23 -04002595
Tejun Heo246619d2006-05-15 20:58:16 +09002596 /* handle completion from new EH */
2597 if (unlikely(qc->ap->ops->error_handler &&
2598 (err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID))) {
2599
2600 if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) {
2601 /* FIXME: not quite right; we don't want the
2602 * translation of taskfile registers into a
2603 * sense descriptors, since that's only
2604 * correct for ATA, not ATAPI
2605 */
Tejun Heo750426a2006-11-14 22:37:35 +09002606 ata_gen_passthru_sense(qc);
Tejun Heo246619d2006-05-15 20:58:16 +09002607 }
2608
Tejun Heo22aac082006-08-08 14:08:59 +09002609 /* SCSI EH automatically locks door if sdev->locked is
2610 * set. Sometimes door lock request continues to
2611 * fail, for example, when no media is present. This
2612 * creates a loop - SCSI EH issues door lock which
2613 * fails and gets invoked again to acquire sense data
2614 * for the failed command.
2615 *
2616 * If door lock fails, always clear sdev->locked to
2617 * avoid this infinite loop.
Tejun Heo2a5f07b2010-11-01 11:39:19 +01002618 *
2619 * This may happen before SCSI scan is complete. Make
2620 * sure qc->dev->sdev isn't NULL before dereferencing.
Tejun Heo22aac082006-08-08 14:08:59 +09002621 */
Tejun Heo2a5f07b2010-11-01 11:39:19 +01002622 if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL && qc->dev->sdev)
Tejun Heo22aac082006-08-08 14:08:59 +09002623 qc->dev->sdev->locked = 0;
2624
Tejun Heo246619d2006-05-15 20:58:16 +09002625 qc->scsicmd->result = SAM_STAT_CHECK_CONDITION;
Christoph Hellwig2aa8f5d2015-10-08 10:25:41 +02002626 ata_qc_done(qc);
Tejun Heo246619d2006-05-15 20:58:16 +09002627 return;
2628 }
2629
2630 /* successful completion or old EH failure path */
Jeff Garzika7dac442005-10-30 04:44:42 -05002631 if (unlikely(err_mask & AC_ERR_DEV)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002632 cmd->result = SAM_STAT_CHECK_CONDITION;
Jeff Garzikc6e6e6662005-11-14 14:50:05 -05002633 atapi_request_sense(qc);
Tejun Heo77853bf2006-01-23 13:09:36 +09002634 return;
Tejun Heo74e6c8c2006-04-02 18:51:53 +09002635 } else if (unlikely(err_mask)) {
Jeff Garzika7dac442005-10-30 04:44:42 -05002636 /* FIXME: not quite right; we don't want the
2637 * translation of taskfile registers into
2638 * a sense descriptors, since that's only
2639 * correct for ATA, not ATAPI
2640 */
Tejun Heo750426a2006-11-14 22:37:35 +09002641 ata_gen_passthru_sense(qc);
Tejun Heo74e6c8c2006-04-02 18:51:53 +09002642 } else {
Christoph Hellwigaa18da82017-01-10 09:41:43 +01002643 if (cmd->cmnd[0] == INQUIRY && (cmd->cmnd[1] & 0x03) == 0)
2644 atapi_fixup_inquiry(cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002645 cmd->result = SAM_STAT_GOOD;
2646 }
2647
Christoph Hellwig2aa8f5d2015-10-08 10:25:41 +02002648 ata_qc_done(qc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002649}
2650/**
2651 * atapi_xlat - Initialize PACKET taskfile
2652 * @qc: command structure to be initialized
Linus Torvalds1da177e2005-04-16 15:20:36 -07002653 *
2654 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04002655 * spin_lock_irqsave(host lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002656 *
2657 * RETURNS:
2658 * Zero on success, non-zero on failure.
2659 */
Tejun Heoad706992006-12-17 10:45:57 +09002660static unsigned int atapi_xlat(struct ata_queued_cmd *qc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002661{
Tejun Heo542b1442006-12-17 10:45:08 +09002662 struct scsi_cmnd *scmd = qc->scsicmd;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002663 struct ata_device *dev = qc->dev;
Tejun Heo542b1442006-12-17 10:45:08 +09002664 int nodata = (scmd->sc_data_direction == DMA_NONE);
Tejun Heo5895ef92008-06-17 12:36:26 +09002665 int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO);
Alan Cox2db78dd2007-10-02 13:53:04 -07002666 unsigned int nbytes;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002667
Tejun Heo2e5704f2006-12-17 10:46:33 +09002668 memset(qc->cdb, 0, dev->cdb_len);
2669 memcpy(qc->cdb, scmd->cmnd, scmd->cmd_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002670
2671 qc->complete_fn = atapi_qc_complete;
2672
2673 qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
Tejun Heo542b1442006-12-17 10:45:08 +09002674 if (scmd->sc_data_direction == DMA_TO_DEVICE) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002675 qc->tf.flags |= ATA_TFLAG_WRITE;
2676 DPRINTK("direction: write\n");
2677 }
2678
2679 qc->tf.command = ATA_CMD_PACKET;
Tejun Heoaacda372008-03-18 17:47:43 +09002680 ata_qc_set_pc_nbytes(qc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002681
Tejun Heoe00f1ff2007-06-27 02:47:35 +09002682 /* check whether ATAPI DMA is safe */
Tejun Heo5895ef92008-06-17 12:36:26 +09002683 if (!nodata && !using_pio && atapi_check_dma(qc))
Tejun Heoe00f1ff2007-06-27 02:47:35 +09002684 using_pio = 1;
2685
Tejun Heoe1902222007-11-26 20:58:02 +09002686 /* Some controller variants snoop this value for Packet
2687 * transfers to do state machine and FIFO management. Thus we
2688 * want to set it properly, and for DMA where it is
2689 * effectively meaningless.
2690 */
Tejun Heoaacda372008-03-18 17:47:43 +09002691 nbytes = min(ata_qc_raw_nbytes(qc), (unsigned int)63 * 1024);
Alan Cox2db78dd2007-10-02 13:53:04 -07002692
Tejun Heoe1902222007-11-26 20:58:02 +09002693 /* Most ATAPI devices which honor transfer chunk size don't
2694 * behave according to the spec when odd chunk size which
2695 * matches the transfer length is specified. If the number of
2696 * bytes to transfer is 2n+1. According to the spec, what
2697 * should happen is to indicate that 2n+1 is going to be
2698 * transferred and transfer 2n+2 bytes where the last byte is
2699 * padding.
2700 *
2701 * In practice, this doesn't happen. ATAPI devices first
2702 * indicate and transfer 2n bytes and then indicate and
2703 * transfer 2 bytes where the last byte is padding.
2704 *
2705 * This inconsistency confuses several controllers which
2706 * perform PIO using DMA such as Intel AHCIs and sil3124/32.
2707 * These controllers use actual number of transferred bytes to
Chengguang Xu8d1e02d2019-02-10 23:19:01 +08002708 * update DMA pointer and transfer of 4n+2 bytes make those
Tejun Heoe1902222007-11-26 20:58:02 +09002709 * controller push DMA pointer by 4n+4 bytes because SATA data
2710 * FISes are aligned to 4 bytes. This causes data corruption
2711 * and buffer overrun.
2712 *
2713 * Always setting nbytes to even number solves this problem
2714 * because then ATAPI devices don't have to split data at 2n
2715 * boundaries.
2716 */
2717 if (nbytes & 0x1)
2718 nbytes++;
2719
Alan Cox2db78dd2007-10-02 13:53:04 -07002720 qc->tf.lbam = (nbytes & 0xFF);
2721 qc->tf.lbah = (nbytes >> 8);
2722
Tejun Heo5895ef92008-06-17 12:36:26 +09002723 if (nodata)
2724 qc->tf.protocol = ATAPI_PROT_NODATA;
2725 else if (using_pio)
2726 qc->tf.protocol = ATAPI_PROT_PIO;
2727 else {
Tejun Heoe00f1ff2007-06-27 02:47:35 +09002728 /* DMA data xfer */
Tejun Heo0dc36882007-12-18 16:34:43 -05002729 qc->tf.protocol = ATAPI_PROT_DMA;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002730 qc->tf.feature |= ATAPI_PKT_DMA;
2731
Tejun Heo91163002008-02-21 13:25:50 +09002732 if ((dev->flags & ATA_DFLAG_DMADIR) &&
2733 (scmd->sc_data_direction != DMA_TO_DEVICE))
Albert Lee95de7192006-04-04 10:57:18 +08002734 /* some SATA bridges need us to indicate data xfer direction */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002735 qc->tf.feature |= ATAPI_DMADIR;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002736 }
2737
Alan Cox2db78dd2007-10-02 13:53:04 -07002738
2739 /* FIXME: We need to translate 0x05 READ_BLOCK_LIMITS to a MODE_SENSE
2740 as ATAPI tape drives don't get this right otherwise */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002741 return 0;
2742}
2743
Jeff Garzik2dcb4072007-10-19 06:42:56 -04002744static struct ata_device *ata_find_dev(struct ata_port *ap, int devno)
Tejun Heoab5b3a52006-05-31 18:27:34 +09002745{
Tejun Heo071f44b2008-04-07 22:47:22 +09002746 if (!sata_pmp_attached(ap)) {
Dan Carpenter59a5e262017-07-19 13:06:41 +03002747 if (likely(devno >= 0 &&
2748 devno < ata_link_max_devices(&ap->link)))
Tejun Heo41bda9c2007-08-06 18:36:24 +09002749 return &ap->link.device[devno];
2750 } else {
Dan Carpenter59a5e262017-07-19 13:06:41 +03002751 if (likely(devno >= 0 &&
2752 devno < ap->nr_pmp_links))
Tejun Heo41bda9c2007-08-06 18:36:24 +09002753 return &ap->pmp_link[devno].device[0];
2754 }
2755
Tejun Heoab5b3a52006-05-31 18:27:34 +09002756 return NULL;
2757}
2758
Jeff Garzik2dcb4072007-10-19 06:42:56 -04002759static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap,
2760 const struct scsi_device *scsidev)
Tejun Heoab5b3a52006-05-31 18:27:34 +09002761{
Tejun Heo41bda9c2007-08-06 18:36:24 +09002762 int devno;
Tejun Heoab5b3a52006-05-31 18:27:34 +09002763
Tejun Heo41bda9c2007-08-06 18:36:24 +09002764 /* skip commands not addressed to targets we simulate */
Tejun Heo071f44b2008-04-07 22:47:22 +09002765 if (!sata_pmp_attached(ap)) {
Tejun Heo41bda9c2007-08-06 18:36:24 +09002766 if (unlikely(scsidev->channel || scsidev->lun))
2767 return NULL;
2768 devno = scsidev->id;
2769 } else {
2770 if (unlikely(scsidev->id || scsidev->lun))
2771 return NULL;
2772 devno = scsidev->channel;
2773 }
2774
2775 return ata_find_dev(ap, devno);
Tejun Heoab5b3a52006-05-31 18:27:34 +09002776}
2777
Linus Torvalds1da177e2005-04-16 15:20:36 -07002778/**
2779 * ata_scsi_find_dev - lookup ata_device from scsi_cmnd
2780 * @ap: ATA port to which the device is attached
2781 * @scsidev: SCSI device from which we derive the ATA device
2782 *
2783 * Given various information provided in struct scsi_cmnd,
2784 * map that onto an ATA bus, and using that mapping
2785 * determine which ata_device is associated with the
2786 * SCSI command to be sent.
2787 *
2788 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04002789 * spin_lock_irqsave(host lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002790 *
2791 * RETURNS:
2792 * Associated ATA device, or %NULL if not found.
2793 */
Bartlomiej Zolnierkiewiczec811a92020-03-26 16:58:18 +01002794struct ata_device *
Jeff Garzik057ace52005-10-22 14:27:05 -04002795ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002796{
Tejun Heoab5b3a52006-05-31 18:27:34 +09002797 struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002798
Tejun Heo2486fa52008-07-31 07:52:40 +09002799 if (unlikely(!dev || !ata_dev_enabled(dev)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002800 return NULL;
2801
Linus Torvalds1da177e2005-04-16 15:20:36 -07002802 return dev;
2803}
2804
Jeff Garzikb0955182005-05-12 15:45:22 -04002805/*
2806 * ata_scsi_map_proto - Map pass-thru protocol value to taskfile value.
2807 * @byte1: Byte 1 from pass-thru CDB.
2808 *
2809 * RETURNS:
2810 * ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise.
2811 */
2812static u8
2813ata_scsi_map_proto(u8 byte1)
2814{
2815 switch((byte1 & 0x1e) >> 1) {
Jeff Garzik2dcb4072007-10-19 06:42:56 -04002816 case 3: /* Non-data */
2817 return ATA_PROT_NODATA;
Jeff Garzikb0955182005-05-12 15:45:22 -04002818
Jeff Garzik2dcb4072007-10-19 06:42:56 -04002819 case 6: /* DMA */
2820 case 10: /* UDMA Data-in */
2821 case 11: /* UDMA Data-Out */
2822 return ATA_PROT_DMA;
Jeff Garzikb0955182005-05-12 15:45:22 -04002823
Jeff Garzik2dcb4072007-10-19 06:42:56 -04002824 case 4: /* PIO Data-in */
2825 case 5: /* PIO Data-out */
2826 return ATA_PROT_PIO;
Jeff Garzikb0955182005-05-12 15:45:22 -04002827
Vinayak Kaleee7fb332015-10-27 11:19:15 +05302828 case 12: /* FPDMA */
2829 return ATA_PROT_NCQ;
2830
Jeff Garzik2dcb4072007-10-19 06:42:56 -04002831 case 0: /* Hard Reset */
2832 case 1: /* SRST */
2833 case 8: /* Device Diagnostic */
2834 case 9: /* Device Reset */
2835 case 7: /* DMA Queued */
Jeff Garzik2dcb4072007-10-19 06:42:56 -04002836 case 15: /* Return Response Info */
2837 default: /* Reserved */
2838 break;
Jeff Garzikb0955182005-05-12 15:45:22 -04002839 }
2840
2841 return ATA_PROT_UNKNOWN;
2842}
2843
2844/**
2845 * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile
2846 * @qc: command structure to be initialized
Jeff Garzikb0955182005-05-12 15:45:22 -04002847 *
Minwoo Imb1ffbf852017-06-24 03:41:10 +09002848 * Handles either 12, 16, or 32-byte versions of the CDB.
Jeff Garzikb0955182005-05-12 15:45:22 -04002849 *
2850 * RETURNS:
2851 * Zero on success, non-zero on failure.
2852 */
Tejun Heoad706992006-12-17 10:45:57 +09002853static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc)
Jeff Garzikb0955182005-05-12 15:45:22 -04002854{
2855 struct ata_taskfile *tf = &(qc->tf);
Tejun Heo542b1442006-12-17 10:45:08 +09002856 struct scsi_cmnd *scmd = qc->scsicmd;
Alan Coxf79d4092006-05-22 16:55:11 +01002857 struct ata_device *dev = qc->dev;
Tejun Heoad706992006-12-17 10:45:57 +09002858 const u8 *cdb = scmd->cmnd;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02002859 u16 fp;
Minwoo Imb1ffbf852017-06-24 03:41:10 +09002860 u16 cdb_offset = 0;
Jeff Garzikb0955182005-05-12 15:45:22 -04002861
Minwoo Imb1ffbf852017-06-24 03:41:10 +09002862 /* 7Fh variable length cmd means a ata pass-thru(32) */
2863 if (cdb[0] == VARIABLE_LENGTH_CMD)
2864 cdb_offset = 9;
2865
2866 tf->protocol = ata_scsi_map_proto(cdb[1 + cdb_offset]);
2867 if (tf->protocol == ATA_PROT_UNKNOWN) {
Hannes Reineckebcfc8672016-04-04 11:44:05 +02002868 fp = 1;
Tejun Heo9a405252005-12-02 11:49:11 +09002869 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02002870 }
Jeff Garzik8190bdb2006-05-24 01:53:39 -04002871
Minwoo Imb1ffbf852017-06-24 03:41:10 +09002872 if (ata_is_ncq(tf->protocol) && (cdb[2 + cdb_offset] & 0x3) == 0)
Hannes Reinecke5b844b62016-07-14 09:05:48 +09002873 tf->protocol = ATA_PROT_NCQ_NODATA;
2874
Vinayak Kale5f8e7f12015-10-27 13:11:46 +05302875 /* enable LBA */
2876 tf->flags |= ATA_TFLAG_LBA;
2877
Alan Coxae8d4ee2007-11-04 22:05:49 -05002878 /*
Jeff Garzikb0955182005-05-12 15:45:22 -04002879 * 12 and 16 byte CDBs use different offsets to
2880 * provide the various register values.
2881 */
Tejun Heo542b1442006-12-17 10:45:08 +09002882 if (cdb[0] == ATA_16) {
Jeff Garzikb0955182005-05-12 15:45:22 -04002883 /*
2884 * 16-byte CDB - may contain extended commands.
2885 *
2886 * If that is the case, copy the upper byte register values.
2887 */
Tejun Heo542b1442006-12-17 10:45:08 +09002888 if (cdb[1] & 0x01) {
2889 tf->hob_feature = cdb[3];
2890 tf->hob_nsect = cdb[5];
2891 tf->hob_lbal = cdb[7];
2892 tf->hob_lbam = cdb[9];
2893 tf->hob_lbah = cdb[11];
Jeff Garzikb0955182005-05-12 15:45:22 -04002894 tf->flags |= ATA_TFLAG_LBA48;
2895 } else
2896 tf->flags &= ~ATA_TFLAG_LBA48;
2897
2898 /*
2899 * Always copy low byte, device and command registers.
2900 */
Tejun Heo542b1442006-12-17 10:45:08 +09002901 tf->feature = cdb[4];
2902 tf->nsect = cdb[6];
2903 tf->lbal = cdb[8];
2904 tf->lbam = cdb[10];
2905 tf->lbah = cdb[12];
2906 tf->device = cdb[13];
2907 tf->command = cdb[14];
Minwoo Imb1ffbf852017-06-24 03:41:10 +09002908 } else if (cdb[0] == ATA_12) {
Jeff Garzikb0955182005-05-12 15:45:22 -04002909 /*
2910 * 12-byte CDB - incapable of extended commands.
2911 */
2912 tf->flags &= ~ATA_TFLAG_LBA48;
2913
Tejun Heo542b1442006-12-17 10:45:08 +09002914 tf->feature = cdb[3];
2915 tf->nsect = cdb[4];
2916 tf->lbal = cdb[5];
2917 tf->lbam = cdb[6];
2918 tf->lbah = cdb[7];
2919 tf->device = cdb[8];
2920 tf->command = cdb[9];
Minwoo Imb1ffbf852017-06-24 03:41:10 +09002921 } else {
2922 /*
2923 * 32-byte CDB - may contain extended command fields.
2924 *
2925 * If that is the case, copy the upper byte register values.
2926 */
2927 if (cdb[10] & 0x01) {
2928 tf->hob_feature = cdb[20];
2929 tf->hob_nsect = cdb[22];
2930 tf->hob_lbal = cdb[16];
2931 tf->hob_lbam = cdb[15];
2932 tf->hob_lbah = cdb[14];
2933 tf->flags |= ATA_TFLAG_LBA48;
2934 } else
2935 tf->flags &= ~ATA_TFLAG_LBA48;
2936
2937 tf->feature = cdb[21];
2938 tf->nsect = cdb[23];
2939 tf->lbal = cdb[19];
2940 tf->lbam = cdb[18];
2941 tf->lbah = cdb[17];
2942 tf->device = cdb[24];
2943 tf->command = cdb[25];
2944 tf->auxiliary = get_unaligned_be32(&cdb[28]);
Jeff Garzikb0955182005-05-12 15:45:22 -04002945 }
Albert Leefa4453c2007-06-07 15:52:07 +08002946
Hannes Reinecke179b3102016-07-14 09:05:43 +09002947 /* For NCQ commands copy the tag value */
2948 if (ata_is_ncq(tf->protocol))
Jens Axboe4e5b6262018-05-11 12:51:04 -06002949 tf->nsect = qc->hw_tag << 3;
Vinayak Kaleee7fb332015-10-27 11:19:15 +05302950
Albert Leefa4453c2007-06-07 15:52:07 +08002951 /* enforce correct master/slave bit */
2952 tf->device = dev->devno ?
2953 tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1;
Jeff Garzikb0955182005-05-12 15:45:22 -04002954
Tejun Heobd30add2009-09-03 16:08:11 +09002955 switch (tf->command) {
Grant Grundler295124d2010-08-17 10:56:53 -07002956 /* READ/WRITE LONG use a non-standard sect_size */
Tejun Heobd30add2009-09-03 16:08:11 +09002957 case ATA_CMD_READ_LONG:
2958 case ATA_CMD_READ_LONG_ONCE:
2959 case ATA_CMD_WRITE_LONG:
2960 case ATA_CMD_WRITE_LONG_ONCE:
Hannes Reineckebcfc8672016-04-04 11:44:05 +02002961 if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1) {
2962 fp = 1;
Tejun Heobd30add2009-09-03 16:08:11 +09002963 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02002964 }
Tejun Heobd30add2009-09-03 16:08:11 +09002965 qc->sect_size = scsi_bufflen(scmd);
Grant Grundler295124d2010-08-17 10:56:53 -07002966 break;
2967
2968 /* commands using reported Logical Block size (e.g. 512 or 4K) */
2969 case ATA_CMD_CFA_WRITE_NE:
2970 case ATA_CMD_CFA_TRANS_SECT:
2971 case ATA_CMD_CFA_WRITE_MULT_NE:
2972 /* XXX: case ATA_CMD_CFA_WRITE_SECTORS_WITHOUT_ERASE: */
2973 case ATA_CMD_READ:
2974 case ATA_CMD_READ_EXT:
2975 case ATA_CMD_READ_QUEUED:
2976 /* XXX: case ATA_CMD_READ_QUEUED_EXT: */
2977 case ATA_CMD_FPDMA_READ:
2978 case ATA_CMD_READ_MULTI:
2979 case ATA_CMD_READ_MULTI_EXT:
2980 case ATA_CMD_PIO_READ:
2981 case ATA_CMD_PIO_READ_EXT:
2982 case ATA_CMD_READ_STREAM_DMA_EXT:
2983 case ATA_CMD_READ_STREAM_EXT:
2984 case ATA_CMD_VERIFY:
2985 case ATA_CMD_VERIFY_EXT:
2986 case ATA_CMD_WRITE:
2987 case ATA_CMD_WRITE_EXT:
2988 case ATA_CMD_WRITE_FUA_EXT:
2989 case ATA_CMD_WRITE_QUEUED:
2990 case ATA_CMD_WRITE_QUEUED_FUA_EXT:
2991 case ATA_CMD_FPDMA_WRITE:
2992 case ATA_CMD_WRITE_MULTI:
2993 case ATA_CMD_WRITE_MULTI_EXT:
2994 case ATA_CMD_WRITE_MULTI_FUA_EXT:
2995 case ATA_CMD_PIO_WRITE:
2996 case ATA_CMD_PIO_WRITE_EXT:
2997 case ATA_CMD_WRITE_STREAM_DMA_EXT:
2998 case ATA_CMD_WRITE_STREAM_EXT:
2999 qc->sect_size = scmd->device->sector_size;
3000 break;
3001
3002 /* Everything else uses 512 byte "sectors" */
3003 default:
3004 qc->sect_size = ATA_SECT_SIZE;
Tejun Heobd30add2009-09-03 16:08:11 +09003005 }
3006
3007 /*
3008 * Set flags so that all registers will be written, pass on
3009 * write indication (used for PIO/DMA setup), result TF is
3010 * copied back and we don't whine too much about its failure.
3011 */
Douglas Gilbertbc496ed2010-02-01 13:11:38 -05003012 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
Tejun Heobd30add2009-09-03 16:08:11 +09003013 if (scmd->sc_data_direction == DMA_TO_DEVICE)
3014 tf->flags |= ATA_TFLAG_WRITE;
3015
3016 qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET;
3017
3018 /*
3019 * Set transfer length.
3020 *
3021 * TODO: find out if we need to do more here to
3022 * cover scatter/gather case.
3023 */
3024 ata_qc_set_pc_nbytes(qc);
3025
3026 /* We may not issue DMA commands if no DMA mode is set */
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003027 if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0) {
3028 fp = 1;
Tejun Heobd30add2009-09-03 16:08:11 +09003029 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003030 }
Tejun Heobd30add2009-09-03 16:08:11 +09003031
Eric Biggers2c1ec6f2018-02-03 20:33:51 -08003032 /* We may not issue NCQ commands to devices not supporting NCQ */
3033 if (ata_is_ncq(tf->protocol) && !ata_ncq_enabled(dev)) {
3034 fp = 1;
3035 goto invalid_fld;
3036 }
3037
Albert Lee1dce5892007-06-07 15:49:22 +08003038 /* sanity check for pio multi commands */
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003039 if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf)) {
3040 fp = 1;
Albert Lee1dce5892007-06-07 15:49:22 +08003041 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003042 }
Albert Lee1dce5892007-06-07 15:49:22 +08003043
3044 if (is_multi_taskfile(tf)) {
3045 unsigned int multi_count = 1 << (cdb[1] >> 5);
3046
3047 /* compare the passed through multi_count
3048 * with the cached multi_count of libata
3049 */
3050 if (multi_count != dev->multi_count)
Joe Perchesa9a79df2011-04-15 15:51:59 -07003051 ata_dev_warn(dev, "invalid multi_count %u ignored\n",
3052 multi_count);
Alan Coxd26fc952007-07-06 19:13:52 -04003053 }
Albert Lee1dce5892007-06-07 15:49:22 +08003054
Jeff Garzikb0955182005-05-12 15:45:22 -04003055 /*
3056 * Filter SET_FEATURES - XFER MODE command -- otherwise,
3057 * SET_FEATURES - XFER MODE must be preceded/succeeded
3058 * by an update to hardware-specific registers for each
3059 * controller (i.e. the reason for ->set_piomode(),
3060 * ->set_dmamode(), and ->post_set_mode() hooks).
3061 */
Tejun Heobd30add2009-09-03 16:08:11 +09003062 if (tf->command == ATA_CMD_SET_FEATURES &&
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003063 tf->feature == SETFEATURES_XFER) {
3064 fp = (cdb[0] == ATA_16) ? 4 : 3;
Tejun Heo9a405252005-12-02 11:49:11 +09003065 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003066 }
Jeff Garzikb0955182005-05-12 15:45:22 -04003067
3068 /*
Tejun Heobd30add2009-09-03 16:08:11 +09003069 * Filter TPM commands by default. These provide an
3070 * essentially uncontrolled encrypted "back door" between
3071 * applications and the disk. Set libata.allow_tpm=1 if you
3072 * have a real reason for wanting to use them. This ensures
3073 * that installed software cannot easily mess stuff up without
3074 * user intent. DVR type users will probably ship with this enabled
3075 * for movie content management.
Jeff Garzikb0955182005-05-12 15:45:22 -04003076 *
Tejun Heobd30add2009-09-03 16:08:11 +09003077 * Note that for ATA8 we can issue a DCS change and DCS freeze lock
3078 * for this and should do in future but that it is not sufficient as
3079 * DCS is an optional feature set. Thus we also do the software filter
3080 * so that we comply with the TC consortium stated goal that the user
3081 * can turn off TC features of their system.
Jeff Garzikb0955182005-05-12 15:45:22 -04003082 */
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003083 if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm) {
3084 fp = (cdb[0] == ATA_16) ? 14 : 9;
Tejun Heobd30add2009-09-03 16:08:11 +09003085 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003086 }
Tejun Heoe61e0672006-05-15 20:57:40 +09003087
Jeff Garzikb0955182005-05-12 15:45:22 -04003088 return 0;
Tejun Heo9a405252005-12-02 11:49:11 +09003089
3090 invalid_fld:
Hannes Reinecke0df10b82016-04-04 11:44:06 +02003091 ata_scsi_set_invalid_field(dev, scmd, fp, 0xff);
Tejun Heo9a405252005-12-02 11:49:11 +09003092 return 1;
Jeff Garzikb0955182005-05-12 15:45:22 -04003093}
3094
Shaun Tancheff9379e6b2016-08-21 23:23:18 -05003095/**
3096 * ata_format_dsm_trim_descr() - SATL Write Same to DSM Trim
3097 * @cmd: SCSI command being translated
Shaun Tancheffef2d7392016-08-24 13:08:14 -05003098 * @trmax: Maximum number of entries that will fit in sector_size bytes.
Shaun Tancheff9379e6b2016-08-21 23:23:18 -05003099 * @sector: Starting sector
Shaun Tancheff7b203092016-08-21 23:23:19 -05003100 * @count: Total Range of request in logical sectors
Shaun Tancheff9379e6b2016-08-21 23:23:18 -05003101 *
3102 * Rewrite the WRITE SAME descriptor to be a DSM TRIM little-endian formatted
3103 * descriptor.
3104 *
3105 * Upto 64 entries of the format:
3106 * 63:48 Range Length
3107 * 47:0 LBA
3108 *
3109 * Range Length of 0 is ignored.
3110 * LBA's should be sorted order and not overlap.
3111 *
3112 * NOTE: this is the same format as ADD LBA(S) TO NV CACHE PINNED SET
Shaun Tancheffef2d7392016-08-24 13:08:14 -05003113 *
3114 * Return: Number of bytes copied into sglist.
Shaun Tancheff9379e6b2016-08-21 23:23:18 -05003115 */
Shaun Tancheffef2d7392016-08-24 13:08:14 -05003116static size_t ata_format_dsm_trim_descr(struct scsi_cmnd *cmd, u32 trmax,
3117 u64 sector, u32 count)
Shaun Tancheff9379e6b2016-08-21 23:23:18 -05003118{
Shaun Tancheffef2d7392016-08-24 13:08:14 -05003119 struct scsi_device *sdp = cmd->device;
3120 size_t len = sdp->sector_size;
3121 size_t r;
3122 __le64 *buf;
3123 u32 i = 0;
Shaun Tancheff9379e6b2016-08-21 23:23:18 -05003124 unsigned long flags;
3125
Shaun Tancheffef2d7392016-08-24 13:08:14 -05003126 WARN_ON(len > ATA_SCSI_RBUF_SIZE);
3127
3128 if (len > ATA_SCSI_RBUF_SIZE)
3129 len = ATA_SCSI_RBUF_SIZE;
Shaun Tancheff9379e6b2016-08-21 23:23:18 -05003130
3131 spin_lock_irqsave(&ata_scsi_rbuf_lock, flags);
Shaun Tancheffef2d7392016-08-24 13:08:14 -05003132 buf = ((void *)ata_scsi_rbuf);
3133 memset(buf, 0, len);
3134 while (i < trmax) {
Shaun Tancheff9379e6b2016-08-21 23:23:18 -05003135 u64 entry = sector |
3136 ((u64)(count > 0xffff ? 0xffff : count) << 48);
Shaun Tancheffef2d7392016-08-24 13:08:14 -05003137 buf[i++] = __cpu_to_le64(entry);
Shaun Tancheff9379e6b2016-08-21 23:23:18 -05003138 if (count <= 0xffff)
3139 break;
3140 count -= 0xffff;
3141 sector += 0xffff;
3142 }
Shaun Tancheffef2d7392016-08-24 13:08:14 -05003143 r = sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, len);
Shaun Tancheff9379e6b2016-08-21 23:23:18 -05003144 spin_unlock_irqrestore(&ata_scsi_rbuf_lock, flags);
3145
Shaun Tancheffef2d7392016-08-24 13:08:14 -05003146 return r;
Shaun Tancheff9379e6b2016-08-21 23:23:18 -05003147}
3148
Shaun Tancheff7b203092016-08-21 23:23:19 -05003149/**
Shaun Tancheff7b203092016-08-21 23:23:19 -05003150 * ata_scsi_write_same_xlat() - SATL Write Same to ATA SCT Write Same
3151 * @qc: Command to be translated
3152 *
3153 * Translate a SCSI WRITE SAME command to be either a DSM TRIM command or
3154 * an SCT Write Same command.
Mauro Carvalho Chehab6baf20b2017-05-16 09:16:18 -03003155 * Based on WRITE SAME has the UNMAP flag:
3156 *
3157 * - When set translate to DSM TRIM
3158 * - When clear translate to SCT Write Same
Shaun Tancheff7b203092016-08-21 23:23:19 -05003159 */
Christoph Hellwig18f0f972009-11-17 10:00:47 -05003160static unsigned int ata_scsi_write_same_xlat(struct ata_queued_cmd *qc)
3161{
3162 struct ata_taskfile *tf = &qc->tf;
3163 struct scsi_cmnd *scmd = qc->scsicmd;
Shaun Tancheffef2d7392016-08-24 13:08:14 -05003164 struct scsi_device *sdp = scmd->device;
3165 size_t len = sdp->sector_size;
Christoph Hellwig18f0f972009-11-17 10:00:47 -05003166 struct ata_device *dev = qc->dev;
3167 const u8 *cdb = scmd->cmnd;
3168 u64 block;
3169 u32 n_block;
Shaun Tancheffef2d7392016-08-24 13:08:14 -05003170 const u32 trmax = len >> 3;
Christoph Hellwig18f0f972009-11-17 10:00:47 -05003171 u32 size;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003172 u16 fp;
Hannes Reinecke0df10b82016-04-04 11:44:06 +02003173 u8 bp = 0xff;
Shaun Tancheff7b203092016-08-21 23:23:19 -05003174 u8 unmap = cdb[1] & 0x8;
Christoph Hellwig18f0f972009-11-17 10:00:47 -05003175
3176 /* we may not issue DMA commands if no DMA mode is set */
3177 if (unlikely(!dev->dma_mode))
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003178 goto invalid_opcode;
Christoph Hellwig18f0f972009-11-17 10:00:47 -05003179
Christoph Hellwigc6ade202017-04-25 13:39:54 +02003180 /*
3181 * We only allow sending this command through the block layer,
3182 * as it modifies the DATA OUT buffer, which would corrupt user
3183 * memory for SG_IO commands.
3184 */
3185 if (unlikely(blk_rq_is_passthrough(scmd->request)))
3186 goto invalid_opcode;
3187
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003188 if (unlikely(scmd->cmd_len < 16)) {
3189 fp = 15;
Christoph Hellwig18f0f972009-11-17 10:00:47 -05003190 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003191 }
Christoph Hellwig18f0f972009-11-17 10:00:47 -05003192 scsi_16_lba_len(cdb, &block, &n_block);
3193
Christoph Hellwig63ccc192017-04-25 14:26:52 +02003194 if (!unmap ||
3195 (dev->horkage & ATA_HORKAGE_NOTRIM) ||
3196 !ata_id_has_trim(dev->id)) {
3197 fp = 1;
3198 bp = 3;
3199 goto invalid_fld;
3200 }
3201 /* If the request is too large the cmd is invalid */
3202 if (n_block > 0xffff * trmax) {
3203 fp = 2;
3204 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003205 }
Christoph Hellwig18f0f972009-11-17 10:00:47 -05003206
3207 /*
3208 * WRITE SAME always has a sector sized buffer as payload, this
3209 * should never be a multiple entry S/G list.
3210 */
3211 if (!scsi_sg_count(scmd))
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003212 goto invalid_param_len;
Christoph Hellwig18f0f972009-11-17 10:00:47 -05003213
Shaun Tancheffef2d7392016-08-24 13:08:14 -05003214 /*
3215 * size must match sector size in bytes
3216 * For DATA SET MANAGEMENT TRIM in ACS-2 nsect (aka count)
3217 * is defined as number of 512 byte blocks to be transferred.
3218 */
Shaun Tancheffef2d7392016-08-24 13:08:14 -05003219
Christoph Hellwig63ccc192017-04-25 14:26:52 +02003220 size = ata_format_dsm_trim_descr(scmd, trmax, block, n_block);
3221 if (size != len)
3222 goto invalid_param_len;
Christoph Hellwig18f0f972009-11-17 10:00:47 -05003223
Christoph Hellwig63ccc192017-04-25 14:26:52 +02003224 if (ata_ncq_enabled(dev) && ata_fpdma_dsm_supported(dev)) {
3225 /* Newer devices support queued TRIM commands */
3226 tf->protocol = ATA_PROT_NCQ;
3227 tf->command = ATA_CMD_FPDMA_SEND;
3228 tf->hob_nsect = ATA_SUBCMD_FPDMA_SEND_DSM & 0x1f;
Jens Axboe4e5b6262018-05-11 12:51:04 -06003229 tf->nsect = qc->hw_tag << 3;
Christoph Hellwig63ccc192017-04-25 14:26:52 +02003230 tf->hob_feature = (size / 512) >> 8;
3231 tf->feature = size / 512;
3232
3233 tf->auxiliary = 1;
Marc Carino87fb6c32013-08-24 23:22:51 -07003234 } else {
Shaun Tancheff7b203092016-08-21 23:23:19 -05003235 tf->protocol = ATA_PROT_DMA;
Christoph Hellwig63ccc192017-04-25 14:26:52 +02003236 tf->hob_feature = 0;
3237 tf->feature = ATA_DSM_TRIM;
3238 tf->hob_nsect = (size / 512) >> 8;
3239 tf->nsect = size / 512;
3240 tf->command = ATA_CMD_DSM;
Marc Carino87fb6c32013-08-24 23:22:51 -07003241 }
3242
Christoph Hellwig18f0f972009-11-17 10:00:47 -05003243 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 |
3244 ATA_TFLAG_WRITE;
3245
3246 ata_qc_set_pc_nbytes(qc);
3247
3248 return 0;
3249
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003250invalid_fld:
Hannes Reinecke0df10b82016-04-04 11:44:06 +02003251 ata_scsi_set_invalid_field(dev, scmd, fp, bp);
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003252 return 1;
3253invalid_param_len:
3254 /* "Parameter list length error" */
3255 ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0);
3256 return 1;
3257invalid_opcode:
3258 /* "Invalid command operation code" */
3259 ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x20, 0x0);
Christoph Hellwig18f0f972009-11-17 10:00:47 -05003260 return 1;
3261}
3262
Linus Torvalds1da177e2005-04-16 15:20:36 -07003263/**
Shaun Tancheff7b203092016-08-21 23:23:19 -05003264 * ata_scsiop_maint_in - Simulate a subset of MAINTENANCE_IN
3265 * @args: device MAINTENANCE_IN data / SCSI command of interest.
3266 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
3267 *
3268 * Yields a subset to satisfy scsi_report_opcode()
3269 *
3270 * LOCKING:
3271 * spin_lock_irqsave(host lock)
3272 */
3273static unsigned int ata_scsiop_maint_in(struct ata_scsi_args *args, u8 *rbuf)
3274{
3275 struct ata_device *dev = args->dev;
3276 u8 *cdb = args->cmd->cmnd;
3277 u8 supported = 0;
3278 unsigned int err = 0;
3279
3280 if (cdb[2] != 1) {
3281 ata_dev_warn(dev, "invalid command format %d\n", cdb[2]);
3282 err = 2;
3283 goto out;
3284 }
3285 switch (cdb[3]) {
3286 case INQUIRY:
3287 case MODE_SENSE:
3288 case MODE_SENSE_10:
3289 case READ_CAPACITY:
3290 case SERVICE_ACTION_IN_16:
3291 case REPORT_LUNS:
3292 case REQUEST_SENSE:
3293 case SYNCHRONIZE_CACHE:
3294 case REZERO_UNIT:
3295 case SEEK_6:
3296 case SEEK_10:
3297 case TEST_UNIT_READY:
3298 case SEND_DIAGNOSTIC:
3299 case MAINTENANCE_IN:
3300 case READ_6:
3301 case READ_10:
3302 case READ_16:
3303 case WRITE_6:
3304 case WRITE_10:
3305 case WRITE_16:
3306 case ATA_12:
3307 case ATA_16:
3308 case VERIFY:
3309 case VERIFY_16:
3310 case MODE_SELECT:
3311 case MODE_SELECT_10:
3312 case START_STOP:
3313 supported = 3;
3314 break;
Shaun Tancheff7b203092016-08-21 23:23:19 -05003315 case ZBC_IN:
3316 case ZBC_OUT:
3317 if (ata_id_zoned_cap(dev->id) ||
3318 dev->class == ATA_DEV_ZAC)
3319 supported = 3;
3320 break;
Christoph Hellwig818831c2017-06-04 14:42:24 +02003321 case SECURITY_PROTOCOL_IN:
3322 case SECURITY_PROTOCOL_OUT:
3323 if (dev->flags & ATA_DFLAG_TRUSTED)
3324 supported = 3;
3325 break;
Shaun Tancheff7b203092016-08-21 23:23:19 -05003326 default:
3327 break;
3328 }
3329out:
3330 rbuf[1] = supported; /* supported */
3331 return err;
3332}
3333
3334/**
Hannes Reinecke28a3fc22016-04-25 12:45:52 +02003335 * ata_scsi_report_zones_complete - convert ATA output
3336 * @qc: command structure returning the data
3337 *
3338 * Convert T-13 little-endian field representation into
3339 * T-10 big-endian field representation.
3340 * What a mess.
3341 */
3342static void ata_scsi_report_zones_complete(struct ata_queued_cmd *qc)
3343{
3344 struct scsi_cmnd *scmd = qc->scsicmd;
3345 struct sg_mapping_iter miter;
3346 unsigned long flags;
3347 unsigned int bytes = 0;
3348
3349 sg_miter_start(&miter, scsi_sglist(scmd), scsi_sg_count(scmd),
3350 SG_MITER_TO_SG | SG_MITER_ATOMIC);
3351
3352 local_irq_save(flags);
3353 while (sg_miter_next(&miter)) {
3354 unsigned int offset = 0;
3355
3356 if (bytes == 0) {
3357 char *hdr;
3358 u32 list_length;
3359 u64 max_lba, opt_lba;
3360 u16 same;
3361
3362 /* Swizzle header */
3363 hdr = miter.addr;
3364 list_length = get_unaligned_le32(&hdr[0]);
3365 same = get_unaligned_le16(&hdr[4]);
3366 max_lba = get_unaligned_le64(&hdr[8]);
3367 opt_lba = get_unaligned_le64(&hdr[16]);
3368 put_unaligned_be32(list_length, &hdr[0]);
3369 hdr[4] = same & 0xf;
3370 put_unaligned_be64(max_lba, &hdr[8]);
3371 put_unaligned_be64(opt_lba, &hdr[16]);
3372 offset += 64;
3373 bytes += 64;
3374 }
3375 while (offset < miter.length) {
3376 char *rec;
3377 u8 cond, type, non_seq, reset;
3378 u64 size, start, wp;
3379
3380 /* Swizzle zone descriptor */
3381 rec = miter.addr + offset;
3382 type = rec[0] & 0xf;
3383 cond = (rec[1] >> 4) & 0xf;
3384 non_seq = (rec[1] & 2);
3385 reset = (rec[1] & 1);
3386 size = get_unaligned_le64(&rec[8]);
3387 start = get_unaligned_le64(&rec[16]);
3388 wp = get_unaligned_le64(&rec[24]);
3389 rec[0] = type;
3390 rec[1] = (cond << 4) | non_seq | reset;
3391 put_unaligned_be64(size, &rec[8]);
3392 put_unaligned_be64(start, &rec[16]);
3393 put_unaligned_be64(wp, &rec[24]);
3394 WARN_ON(offset + 64 > miter.length);
3395 offset += 64;
3396 bytes += 64;
3397 }
3398 }
3399 sg_miter_stop(&miter);
3400 local_irq_restore(flags);
3401
3402 ata_scsi_qc_complete(qc);
3403}
3404
3405static unsigned int ata_scsi_zbc_in_xlat(struct ata_queued_cmd *qc)
3406{
3407 struct ata_taskfile *tf = &qc->tf;
3408 struct scsi_cmnd *scmd = qc->scsicmd;
3409 const u8 *cdb = scmd->cmnd;
3410 u16 sect, fp = (u16)-1;
3411 u8 sa, options, bp = 0xff;
3412 u64 block;
3413 u32 n_block;
3414
3415 if (unlikely(scmd->cmd_len < 16)) {
3416 ata_dev_warn(qc->dev, "invalid cdb length %d\n",
3417 scmd->cmd_len);
3418 fp = 15;
3419 goto invalid_fld;
3420 }
3421 scsi_16_lba_len(cdb, &block, &n_block);
3422 if (n_block != scsi_bufflen(scmd)) {
3423 ata_dev_warn(qc->dev, "non-matching transfer count (%d/%d)\n",
3424 n_block, scsi_bufflen(scmd));
3425 goto invalid_param_len;
3426 }
3427 sa = cdb[1] & 0x1f;
3428 if (sa != ZI_REPORT_ZONES) {
3429 ata_dev_warn(qc->dev, "invalid service action %d\n", sa);
3430 fp = 1;
3431 goto invalid_fld;
3432 }
3433 /*
3434 * ZAC allows only for transfers in 512 byte blocks,
3435 * and uses a 16 bit value for the transfer count.
3436 */
3437 if ((n_block / 512) > 0xffff || n_block < 512 || (n_block % 512)) {
3438 ata_dev_warn(qc->dev, "invalid transfer count %d\n", n_block);
3439 goto invalid_param_len;
3440 }
3441 sect = n_block / 512;
Damien Le Moal3f174222016-07-14 09:05:49 +09003442 options = cdb[14] & 0xbf;
Hannes Reinecke28a3fc22016-04-25 12:45:52 +02003443
3444 if (ata_ncq_enabled(qc->dev) &&
3445 ata_fpdma_zac_mgmt_in_supported(qc->dev)) {
3446 tf->protocol = ATA_PROT_NCQ;
3447 tf->command = ATA_CMD_FPDMA_RECV;
3448 tf->hob_nsect = ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN & 0x1f;
Jens Axboe4e5b6262018-05-11 12:51:04 -06003449 tf->nsect = qc->hw_tag << 3;
Hannes Reinecke28a3fc22016-04-25 12:45:52 +02003450 tf->feature = sect & 0xff;
3451 tf->hob_feature = (sect >> 8) & 0xff;
Damien Le Moal3f174222016-07-14 09:05:49 +09003452 tf->auxiliary = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES | (options << 8);
Hannes Reinecke28a3fc22016-04-25 12:45:52 +02003453 } else {
3454 tf->command = ATA_CMD_ZAC_MGMT_IN;
3455 tf->feature = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES;
3456 tf->protocol = ATA_PROT_DMA;
3457 tf->hob_feature = options;
3458 tf->hob_nsect = (sect >> 8) & 0xff;
3459 tf->nsect = sect & 0xff;
3460 }
3461 tf->device = ATA_LBA;
3462 tf->lbah = (block >> 16) & 0xff;
3463 tf->lbam = (block >> 8) & 0xff;
3464 tf->lbal = block & 0xff;
3465 tf->hob_lbah = (block >> 40) & 0xff;
3466 tf->hob_lbam = (block >> 32) & 0xff;
3467 tf->hob_lbal = (block >> 24) & 0xff;
3468
3469 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48;
3470 qc->flags |= ATA_QCFLAG_RESULT_TF;
3471
3472 ata_qc_set_pc_nbytes(qc);
3473
3474 qc->complete_fn = ata_scsi_report_zones_complete;
3475
3476 return 0;
3477
3478invalid_fld:
3479 ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp);
3480 return 1;
3481
3482invalid_param_len:
3483 /* "Parameter list length error" */
3484 ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0);
3485 return 1;
3486}
3487
Hannes Reinecke27708a92016-04-25 12:45:53 +02003488static unsigned int ata_scsi_zbc_out_xlat(struct ata_queued_cmd *qc)
3489{
3490 struct ata_taskfile *tf = &qc->tf;
3491 struct scsi_cmnd *scmd = qc->scsicmd;
3492 struct ata_device *dev = qc->dev;
3493 const u8 *cdb = scmd->cmnd;
Damien Le Moal2950cef2016-07-14 09:05:51 +09003494 u8 all, sa;
Hannes Reinecke27708a92016-04-25 12:45:53 +02003495 u64 block;
3496 u32 n_block;
3497 u16 fp = (u16)-1;
3498
3499 if (unlikely(scmd->cmd_len < 16)) {
3500 fp = 15;
3501 goto invalid_fld;
3502 }
3503
3504 sa = cdb[1] & 0x1f;
3505 if ((sa != ZO_CLOSE_ZONE) && (sa != ZO_FINISH_ZONE) &&
3506 (sa != ZO_OPEN_ZONE) && (sa != ZO_RESET_WRITE_POINTER)) {
3507 fp = 1;
3508 goto invalid_fld;
3509 }
3510
3511 scsi_16_lba_len(cdb, &block, &n_block);
3512 if (n_block) {
3513 /*
3514 * ZAC MANAGEMENT OUT doesn't define any length
3515 */
3516 goto invalid_param_len;
3517 }
Hannes Reinecke27708a92016-04-25 12:45:53 +02003518
Damien Le Moal2950cef2016-07-14 09:05:51 +09003519 all = cdb[14] & 0x1;
Damien Le Moal6edf1d42018-06-26 20:56:55 +09003520 if (all) {
3521 /*
3522 * Ignore the block address (zone ID) as defined by ZBC.
3523 */
3524 block = 0;
3525 } else if (block >= dev->n_sectors) {
Damien Le Moalb320a0a2018-06-26 20:56:54 +09003526 /*
3527 * Block must be a valid zone ID (a zone start LBA).
3528 */
3529 fp = 2;
3530 goto invalid_fld;
3531 }
Hannes Reinecke27708a92016-04-25 12:45:53 +02003532
Hannes Reinecke284b3b72016-04-25 12:45:54 +02003533 if (ata_ncq_enabled(qc->dev) &&
3534 ata_fpdma_zac_mgmt_out_supported(qc->dev)) {
Hannes Reinecke5b844b62016-07-14 09:05:48 +09003535 tf->protocol = ATA_PROT_NCQ_NODATA;
Hannes Reinecke284b3b72016-04-25 12:45:54 +02003536 tf->command = ATA_CMD_NCQ_NON_DATA;
Damien Le Moalee194b72016-07-14 09:05:50 +09003537 tf->feature = ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT;
Jens Axboe4e5b6262018-05-11 12:51:04 -06003538 tf->nsect = qc->hw_tag << 3;
Damien Le Moal2950cef2016-07-14 09:05:51 +09003539 tf->auxiliary = sa | ((u16)all << 8);
Hannes Reinecke284b3b72016-04-25 12:45:54 +02003540 } else {
3541 tf->protocol = ATA_PROT_NODATA;
3542 tf->command = ATA_CMD_ZAC_MGMT_OUT;
3543 tf->feature = sa;
Damien Le Moal2950cef2016-07-14 09:05:51 +09003544 tf->hob_feature = all;
Hannes Reinecke284b3b72016-04-25 12:45:54 +02003545 }
Hannes Reinecke27708a92016-04-25 12:45:53 +02003546 tf->lbah = (block >> 16) & 0xff;
3547 tf->lbam = (block >> 8) & 0xff;
3548 tf->lbal = block & 0xff;
3549 tf->hob_lbah = (block >> 40) & 0xff;
3550 tf->hob_lbam = (block >> 32) & 0xff;
3551 tf->hob_lbal = (block >> 24) & 0xff;
3552 tf->device = ATA_LBA;
3553 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48;
3554
3555 return 0;
3556
Linus Torvalds1da177e2005-04-16 15:20:36 -07003557 invalid_fld:
Hannes Reinecke27708a92016-04-25 12:45:53 +02003558 ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff);
3559 return 1;
Hannes Reinecke27708a92016-04-25 12:45:53 +02003560invalid_param_len:
3561 /* "Parameter list length error" */
3562 ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003563 return 1;
3564}
3565
3566/**
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003567 * ata_mselect_caching - Simulate MODE SELECT for caching info page
3568 * @qc: Storage for translated ATA taskfile
3569 * @buf: input buffer
3570 * @len: number of valid bytes in the input buffer
Hannes Reinecke77800812016-04-04 11:44:07 +02003571 * @fp: out parameter for the failed field on error
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003572 *
3573 * Prepare a taskfile to modify caching information for the device.
3574 *
3575 * LOCKING:
3576 * None.
3577 */
3578static int ata_mselect_caching(struct ata_queued_cmd *qc,
Hannes Reinecke77800812016-04-04 11:44:07 +02003579 const u8 *buf, int len, u16 *fp)
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003580{
3581 struct ata_taskfile *tf = &qc->tf;
3582 struct ata_device *dev = qc->dev;
Tom Yand7372cb2016-07-23 02:34:08 +08003583 u8 mpage[CACHE_MPAGE_LEN];
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003584 u8 wce;
Hannes Reinecke77800812016-04-04 11:44:07 +02003585 int i;
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003586
3587 /*
3588 * The first two bytes of def_cache_mpage are a header, so offsets
3589 * in mpage are off by 2 compared to buf. Same for len.
3590 */
3591
Hannes Reinecke77800812016-04-04 11:44:07 +02003592 if (len != CACHE_MPAGE_LEN - 2) {
3593 if (len < CACHE_MPAGE_LEN - 2)
3594 *fp = len;
3595 else
3596 *fp = CACHE_MPAGE_LEN - 2;
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003597 return -EINVAL;
Hannes Reinecke77800812016-04-04 11:44:07 +02003598 }
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003599
3600 wce = buf[0] & (1 << 2);
3601
3602 /*
3603 * Check that read-only bits are not modified.
3604 */
3605 ata_msense_caching(dev->id, mpage, false);
Hannes Reinecke77800812016-04-04 11:44:07 +02003606 for (i = 0; i < CACHE_MPAGE_LEN - 2; i++) {
3607 if (i == 0)
3608 continue;
3609 if (mpage[i + 2] != buf[i]) {
3610 *fp = i;
3611 return -EINVAL;
3612 }
3613 }
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003614
3615 tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
3616 tf->protocol = ATA_PROT_NODATA;
3617 tf->nsect = 0;
3618 tf->command = ATA_CMD_SET_FEATURES;
3619 tf->feature = wce ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF;
3620 return 0;
3621}
3622
3623/**
Hannes Reinecke06dbde52016-04-04 11:44:03 +02003624 * ata_mselect_control - Simulate MODE SELECT for control page
3625 * @qc: Storage for translated ATA taskfile
3626 * @buf: input buffer
3627 * @len: number of valid bytes in the input buffer
Hannes Reinecke77800812016-04-04 11:44:07 +02003628 * @fp: out parameter for the failed field on error
Hannes Reinecke06dbde52016-04-04 11:44:03 +02003629 *
3630 * Prepare a taskfile to modify caching information for the device.
3631 *
3632 * LOCKING:
3633 * None.
3634 */
3635static int ata_mselect_control(struct ata_queued_cmd *qc,
Hannes Reinecke77800812016-04-04 11:44:07 +02003636 const u8 *buf, int len, u16 *fp)
Hannes Reinecke06dbde52016-04-04 11:44:03 +02003637{
3638 struct ata_device *dev = qc->dev;
Tom Yand7372cb2016-07-23 02:34:08 +08003639 u8 mpage[CONTROL_MPAGE_LEN];
Hannes Reinecke06dbde52016-04-04 11:44:03 +02003640 u8 d_sense;
Hannes Reinecke77800812016-04-04 11:44:07 +02003641 int i;
Hannes Reinecke06dbde52016-04-04 11:44:03 +02003642
3643 /*
3644 * The first two bytes of def_control_mpage are a header, so offsets
3645 * in mpage are off by 2 compared to buf. Same for len.
3646 */
3647
Hannes Reinecke77800812016-04-04 11:44:07 +02003648 if (len != CONTROL_MPAGE_LEN - 2) {
3649 if (len < CONTROL_MPAGE_LEN - 2)
3650 *fp = len;
3651 else
3652 *fp = CONTROL_MPAGE_LEN - 2;
Hannes Reinecke06dbde52016-04-04 11:44:03 +02003653 return -EINVAL;
Hannes Reinecke77800812016-04-04 11:44:07 +02003654 }
Hannes Reinecke06dbde52016-04-04 11:44:03 +02003655
3656 d_sense = buf[0] & (1 << 2);
3657
3658 /*
3659 * Check that read-only bits are not modified.
3660 */
Tom Yanf086b742016-07-13 02:54:12 +08003661 ata_msense_control(dev, mpage, false);
Hannes Reinecke77800812016-04-04 11:44:07 +02003662 for (i = 0; i < CONTROL_MPAGE_LEN - 2; i++) {
3663 if (i == 0)
3664 continue;
3665 if (mpage[2 + i] != buf[i]) {
3666 *fp = i;
3667 return -EINVAL;
3668 }
3669 }
Hannes Reinecke06dbde52016-04-04 11:44:03 +02003670 if (d_sense & (1 << 2))
3671 dev->flags |= ATA_DFLAG_D_SENSE;
3672 else
3673 dev->flags &= ~ATA_DFLAG_D_SENSE;
Hannes Reinecke06dbde52016-04-04 11:44:03 +02003674 return 0;
3675}
3676
3677/**
Minwoo Im01efd602017-06-20 19:21:30 +09003678 * ata_scsi_mode_select_xlat - Simulate MODE SELECT 6, 10 commands
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003679 * @qc: Storage for translated ATA taskfile
3680 *
3681 * Converts a MODE SELECT command to an ATA SET FEATURES taskfile.
3682 * Assume this is invoked for direct access devices (e.g. disks) only.
3683 * There should be no block descriptor for other device types.
3684 *
3685 * LOCKING:
3686 * spin_lock_irqsave(host lock)
3687 */
3688static unsigned int ata_scsi_mode_select_xlat(struct ata_queued_cmd *qc)
3689{
3690 struct scsi_cmnd *scmd = qc->scsicmd;
3691 const u8 *cdb = scmd->cmnd;
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003692 u8 pg, spg;
3693 unsigned six_byte, pg_len, hdr_len, bd_len;
3694 int len;
Hannes Reinecke77800812016-04-04 11:44:07 +02003695 u16 fp = (u16)-1;
3696 u8 bp = 0xff;
Ye Binf650ef62020-06-05 09:41:49 +08003697 u8 buffer[64];
3698 const u8 *p = buffer;
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003699
3700 VPRINTK("ENTER\n");
3701
3702 six_byte = (cdb[0] == MODE_SELECT);
3703 if (six_byte) {
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003704 if (scmd->cmd_len < 5) {
3705 fp = 4;
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003706 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003707 }
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003708
3709 len = cdb[4];
3710 hdr_len = 4;
3711 } else {
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003712 if (scmd->cmd_len < 9) {
3713 fp = 8;
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003714 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003715 }
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003716
3717 len = (cdb[7] << 8) + cdb[8];
3718 hdr_len = 8;
3719 }
3720
3721 /* We only support PF=1, SP=0. */
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003722 if ((cdb[1] & 0x11) != 0x10) {
3723 fp = 1;
Hannes Reinecke0df10b82016-04-04 11:44:06 +02003724 bp = (cdb[1] & 0x01) ? 1 : 5;
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003725 goto invalid_fld;
Hannes Reineckebcfc8672016-04-04 11:44:05 +02003726 }
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003727
3728 /* Test early for possible overrun. */
3729 if (!scsi_sg_count(scmd) || scsi_sglist(scmd)->length < len)
3730 goto invalid_param_len;
3731
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003732 /* Move past header and block descriptors. */
3733 if (len < hdr_len)
3734 goto invalid_param_len;
3735
Ye Binf650ef62020-06-05 09:41:49 +08003736 if (!sg_copy_to_buffer(scsi_sglist(scmd), scsi_sg_count(scmd),
3737 buffer, sizeof(buffer)))
3738 goto invalid_param_len;
3739
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003740 if (six_byte)
3741 bd_len = p[3];
3742 else
3743 bd_len = (p[6] << 8) + p[7];
3744
3745 len -= hdr_len;
3746 p += hdr_len;
3747 if (len < bd_len)
3748 goto invalid_param_len;
Hannes Reinecke77800812016-04-04 11:44:07 +02003749 if (bd_len != 0 && bd_len != 8) {
3750 fp = (six_byte) ? 3 : 6;
3751 fp += bd_len + hdr_len;
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003752 goto invalid_param;
Hannes Reinecke77800812016-04-04 11:44:07 +02003753 }
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003754
3755 len -= bd_len;
3756 p += bd_len;
3757 if (len == 0)
3758 goto skip;
3759
3760 /* Parse both possible formats for the mode page headers. */
3761 pg = p[0] & 0x3f;
3762 if (p[0] & 0x40) {
3763 if (len < 4)
3764 goto invalid_param_len;
3765
3766 spg = p[1];
3767 pg_len = (p[2] << 8) | p[3];
3768 p += 4;
3769 len -= 4;
3770 } else {
3771 if (len < 2)
3772 goto invalid_param_len;
3773
3774 spg = 0;
3775 pg_len = p[1];
3776 p += 2;
3777 len -= 2;
3778 }
3779
3780 /*
3781 * No mode subpages supported (yet) but asking for _all_
3782 * subpages may be valid
3783 */
Hannes Reinecke77800812016-04-04 11:44:07 +02003784 if (spg && (spg != ALL_SUB_MPAGES)) {
3785 fp = (p[0] & 0x40) ? 1 : 0;
3786 fp += hdr_len + bd_len;
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003787 goto invalid_param;
Hannes Reinecke77800812016-04-04 11:44:07 +02003788 }
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003789 if (pg_len > len)
3790 goto invalid_param_len;
3791
3792 switch (pg) {
3793 case CACHE_MPAGE:
Hannes Reinecke77800812016-04-04 11:44:07 +02003794 if (ata_mselect_caching(qc, p, pg_len, &fp) < 0) {
3795 fp += hdr_len + bd_len;
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003796 goto invalid_param;
Hannes Reinecke77800812016-04-04 11:44:07 +02003797 }
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003798 break;
Hannes Reinecke06dbde52016-04-04 11:44:03 +02003799 case CONTROL_MPAGE:
Hannes Reinecke77800812016-04-04 11:44:07 +02003800 if (ata_mselect_control(qc, p, pg_len, &fp) < 0) {
3801 fp += hdr_len + bd_len;
Hannes Reinecke06dbde52016-04-04 11:44:03 +02003802 goto invalid_param;
Tom Yan535fd072016-07-22 02:41:54 +08003803 } else {
3804 goto skip; /* No ATA command to send */
Hannes Reinecke77800812016-04-04 11:44:07 +02003805 }
Hannes Reinecke06dbde52016-04-04 11:44:03 +02003806 break;
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003807 default: /* invalid page code */
Hannes Reinecke77800812016-04-04 11:44:07 +02003808 fp = bd_len + hdr_len;
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003809 goto invalid_param;
3810 }
3811
3812 /*
3813 * Only one page has changeable data, so we only support setting one
3814 * page at a time.
3815 */
3816 if (len > pg_len)
3817 goto invalid_param;
3818
3819 return 0;
3820
3821 invalid_fld:
Hannes Reinecke0df10b82016-04-04 11:44:06 +02003822 ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp);
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003823 return 1;
3824
3825 invalid_param:
Hannes Reinecke77800812016-04-04 11:44:07 +02003826 ata_scsi_set_invalid_parameter(qc->dev, scmd, fp);
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003827 return 1;
3828
3829 invalid_param_len:
3830 /* "Parameter list length error" */
Hannes Reinecke06dbde52016-04-04 11:44:03 +02003831 ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0);
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003832 return 1;
3833
3834 skip:
3835 scmd->result = SAM_STAT_GOOD;
3836 return 1;
3837}
3838
Christoph Hellwig818831c2017-06-04 14:42:24 +02003839static u8 ata_scsi_trusted_op(u32 len, bool send, bool dma)
3840{
3841 if (len == 0)
3842 return ATA_CMD_TRUSTED_NONDATA;
3843 else if (send)
3844 return dma ? ATA_CMD_TRUSTED_SND_DMA : ATA_CMD_TRUSTED_SND;
3845 else
3846 return dma ? ATA_CMD_TRUSTED_RCV_DMA : ATA_CMD_TRUSTED_RCV;
3847}
3848
3849static unsigned int ata_scsi_security_inout_xlat(struct ata_queued_cmd *qc)
3850{
3851 struct scsi_cmnd *scmd = qc->scsicmd;
3852 const u8 *cdb = scmd->cmnd;
3853 struct ata_taskfile *tf = &qc->tf;
3854 u8 secp = cdb[1];
3855 bool send = (cdb[0] == SECURITY_PROTOCOL_OUT);
3856 u16 spsp = get_unaligned_be16(&cdb[2]);
3857 u32 len = get_unaligned_be32(&cdb[6]);
3858 bool dma = !(qc->dev->flags & ATA_DFLAG_PIO);
3859
3860 /*
3861 * We don't support the ATA "security" protocol.
3862 */
3863 if (secp == 0xef) {
3864 ata_scsi_set_invalid_field(qc->dev, scmd, 1, 0);
3865 return 1;
3866 }
3867
3868 if (cdb[4] & 7) { /* INC_512 */
3869 if (len > 0xffff) {
3870 ata_scsi_set_invalid_field(qc->dev, scmd, 6, 0);
3871 return 1;
3872 }
3873 } else {
3874 if (len > 0x01fffe00) {
3875 ata_scsi_set_invalid_field(qc->dev, scmd, 6, 0);
3876 return 1;
3877 }
3878
3879 /* convert to the sector-based ATA addressing */
3880 len = (len + 511) / 512;
3881 }
3882
3883 tf->protocol = dma ? ATA_PROT_DMA : ATA_PROT_PIO;
3884 tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR | ATA_TFLAG_LBA;
3885 if (send)
3886 tf->flags |= ATA_TFLAG_WRITE;
3887 tf->command = ata_scsi_trusted_op(len, send, dma);
3888 tf->feature = secp;
3889 tf->lbam = spsp & 0xff;
3890 tf->lbah = spsp >> 8;
3891
3892 if (len) {
3893 tf->nsect = len & 0xff;
3894 tf->lbal = len >> 8;
3895 } else {
3896 if (!send)
3897 tf->lbah = (1 << 7);
3898 }
3899
3900 ata_qc_set_pc_nbytes(qc);
3901 return 0;
3902}
3903
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003904/**
Minwoo Imb1ffbf852017-06-24 03:41:10 +09003905 * ata_scsi_var_len_cdb_xlat - SATL variable length CDB to Handler
3906 * @qc: Command to be translated
3907 *
3908 * Translate a SCSI variable length CDB to specified commands.
3909 * It checks a service action value in CDB to call corresponding handler.
3910 *
3911 * RETURNS:
3912 * Zero on success, non-zero on failure
3913 *
3914 */
3915static unsigned int ata_scsi_var_len_cdb_xlat(struct ata_queued_cmd *qc)
3916{
3917 struct scsi_cmnd *scmd = qc->scsicmd;
3918 const u8 *cdb = scmd->cmnd;
3919 const u16 sa = get_unaligned_be16(&cdb[8]);
3920
3921 /*
3922 * if service action represents a ata pass-thru(32) command,
3923 * then pass it to ata_scsi_pass_thru handler.
3924 */
3925 if (sa == ATA_32)
3926 return ata_scsi_pass_thru(qc);
3927
Minwoo Imb1ffbf852017-06-24 03:41:10 +09003928 /* unsupported service action */
3929 return 1;
3930}
3931
3932/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07003933 * ata_get_xlat_func - check if SCSI to ATA translation is possible
3934 * @dev: ATA device
3935 * @cmd: SCSI command opcode to consider
3936 *
3937 * Look up the SCSI command given, and determine whether the
3938 * SCSI command is to be translated or simulated.
3939 *
3940 * RETURNS:
3941 * Pointer to translation function if possible, %NULL if not.
3942 */
3943
3944static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd)
3945{
3946 switch (cmd) {
3947 case READ_6:
3948 case READ_10:
3949 case READ_16:
3950
3951 case WRITE_6:
3952 case WRITE_10:
3953 case WRITE_16:
3954 return ata_scsi_rw_xlat;
3955
Christoph Hellwig0cdd6eb2009-12-10 10:36:01 +01003956 case WRITE_SAME_16:
Christoph Hellwig18f0f972009-11-17 10:00:47 -05003957 return ata_scsi_write_same_xlat;
3958
Linus Torvalds1da177e2005-04-16 15:20:36 -07003959 case SYNCHRONIZE_CACHE:
3960 if (ata_try_flush_cache(dev))
3961 return ata_scsi_flush_xlat;
3962 break;
3963
3964 case VERIFY:
3965 case VERIFY_16:
3966 return ata_scsi_verify_xlat;
Jeff Garzikb0955182005-05-12 15:45:22 -04003967
3968 case ATA_12:
3969 case ATA_16:
3970 return ata_scsi_pass_thru;
Jeff Garzikda613962005-08-29 19:01:43 -04003971
Minwoo Imb1ffbf852017-06-24 03:41:10 +09003972 case VARIABLE_LENGTH_CMD:
3973 return ata_scsi_var_len_cdb_xlat;
3974
Paolo Bonzini1b26d292012-07-05 14:18:21 +02003975 case MODE_SELECT:
3976 case MODE_SELECT_10:
3977 return ata_scsi_mode_select_xlat;
3978 break;
3979
Hannes Reinecke28a3fc22016-04-25 12:45:52 +02003980 case ZBC_IN:
3981 return ata_scsi_zbc_in_xlat;
3982
Hannes Reinecke27708a92016-04-25 12:45:53 +02003983 case ZBC_OUT:
3984 return ata_scsi_zbc_out_xlat;
3985
Christoph Hellwig818831c2017-06-04 14:42:24 +02003986 case SECURITY_PROTOCOL_IN:
3987 case SECURITY_PROTOCOL_OUT:
3988 if (!(dev->flags & ATA_DFLAG_TRUSTED))
3989 break;
3990 return ata_scsi_security_inout_xlat;
3991
Douglas Gilbert972dcaf2005-08-11 03:35:53 -04003992 case START_STOP:
3993 return ata_scsi_start_stop_xlat;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003994 }
3995
3996 return NULL;
3997}
3998
3999/**
4000 * ata_scsi_dump_cdb - dump SCSI command contents to dmesg
4001 * @ap: ATA port to which the command was being sent
4002 * @cmd: SCSI command to dump
4003 *
4004 * Prints the contents of a SCSI command via printk().
4005 */
4006
Bartlomiej Zolnierkiewicz15964ff2020-03-26 16:58:19 +01004007void ata_scsi_dump_cdb(struct ata_port *ap, struct scsi_cmnd *cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004008{
Paul Menzel32a53422018-07-08 09:11:34 +02004009#ifdef ATA_VERBOSE_DEBUG
Linus Torvalds1da177e2005-04-16 15:20:36 -07004010 struct scsi_device *scsidev = cmd->device;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004011
Paul Menzel32a53422018-07-08 09:11:34 +02004012 VPRINTK("CDB (%u:%d,%d,%lld) %9ph\n",
Tejun Heo44877b42007-02-21 01:06:51 +09004013 ap->print_id,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004014 scsidev->channel, scsidev->id, scsidev->lun,
Andy Shevchenko26f58832016-05-06 21:40:40 +03004015 cmd->cmnd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004016#endif
4017}
4018
Bartlomiej Zolnierkiewicz15964ff2020-03-26 16:58:19 +01004019int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, struct ata_device *dev)
Brian Kingeb3f0f92006-03-23 17:30:02 -06004020{
Mark Lordbaf4fdf2007-08-08 01:08:45 +09004021 u8 scsi_op = scmd->cmnd[0];
4022 ata_xlat_func_t xlat_func;
Tejun Heo2115ea92006-05-15 21:03:39 +09004023 int rc = 0;
4024
Hannes Reinecke9162c652014-11-05 13:08:21 +01004025 if (dev->class == ATA_DEV_ATA || dev->class == ATA_DEV_ZAC) {
Mark Lordbaf4fdf2007-08-08 01:08:45 +09004026 if (unlikely(!scmd->cmd_len || scmd->cmd_len > dev->cdb_len))
4027 goto bad_cdb_len;
4028
4029 xlat_func = ata_get_xlat_func(dev, scsi_op);
4030 } else {
4031 if (unlikely(!scmd->cmd_len))
4032 goto bad_cdb_len;
4033
4034 xlat_func = NULL;
4035 if (likely((scsi_op != ATA_16) || !atapi_passthru16)) {
4036 /* relay SCSI command to ATAPI device */
Mark Lord607126c2007-11-15 13:13:59 +09004037 int len = COMMAND_SIZE(scsi_op);
Eric Biggers058f58e2018-02-03 20:30:56 -08004038 if (unlikely(len > scmd->cmd_len ||
4039 len > dev->cdb_len ||
4040 scmd->cmd_len > ATAPI_CDB_LEN))
Mark Lordbaf4fdf2007-08-08 01:08:45 +09004041 goto bad_cdb_len;
4042
4043 xlat_func = atapi_xlat;
4044 } else {
4045 /* ATA_16 passthru, treat as an ATA command */
4046 if (unlikely(scmd->cmd_len > 16))
4047 goto bad_cdb_len;
4048
4049 xlat_func = ata_get_xlat_func(dev, scsi_op);
4050 }
Tejun Heo2e5704f2006-12-17 10:46:33 +09004051 }
4052
Mark Lordbaf4fdf2007-08-08 01:08:45 +09004053 if (xlat_func)
Jeff Garzikb27dcfb2010-11-17 22:56:48 -05004054 rc = ata_scsi_translate(dev, scmd, xlat_func);
Mark Lordbaf4fdf2007-08-08 01:08:45 +09004055 else
Jeff Garzikb27dcfb2010-11-17 22:56:48 -05004056 ata_scsi_simulate(dev, scmd);
Tejun Heo2115ea92006-05-15 21:03:39 +09004057
4058 return rc;
Mark Lordbaf4fdf2007-08-08 01:08:45 +09004059
4060 bad_cdb_len:
4061 DPRINTK("bad CDB len=%u, scsi_op=0x%02x, max=%u\n",
4062 scmd->cmd_len, scsi_op, dev->cdb_len);
4063 scmd->result = DID_ERROR << 16;
Jeff Garzikb27dcfb2010-11-17 22:56:48 -05004064 scmd->scsi_done(scmd);
Mark Lordbaf4fdf2007-08-08 01:08:45 +09004065 return 0;
Brian Kingeb3f0f92006-03-23 17:30:02 -06004066}
4067
Linus Torvalds1da177e2005-04-16 15:20:36 -07004068/**
4069 * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device
Jeff Garzik23e701e2010-11-17 12:03:58 -05004070 * @shost: SCSI host of command to be sent
Linus Torvalds1da177e2005-04-16 15:20:36 -07004071 * @cmd: SCSI command to be sent
Linus Torvalds1da177e2005-04-16 15:20:36 -07004072 *
4073 * In some cases, this function translates SCSI commands into
4074 * ATA taskfiles, and queues the taskfiles to be sent to
4075 * hardware. In other cases, this function simulates a
4076 * SCSI device by evaluating and responding to certain
4077 * SCSI commands. This creates the overall effect of
4078 * ATA and ATAPI devices appearing as SCSI devices.
4079 *
4080 * LOCKING:
Jeff Garzik23e701e2010-11-17 12:03:58 -05004081 * ATA host lock
Linus Torvalds1da177e2005-04-16 15:20:36 -07004082 *
4083 * RETURNS:
Tejun Heo2115ea92006-05-15 21:03:39 +09004084 * Return value from __ata_scsi_queuecmd() if @cmd can be queued,
4085 * 0 otherwise.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004086 */
Jeff Garzik23e701e2010-11-17 12:03:58 -05004087int ata_scsi_queuecmd(struct Scsi_Host *shost, struct scsi_cmnd *cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004088{
4089 struct ata_port *ap;
4090 struct ata_device *dev;
4091 struct scsi_device *scsidev = cmd->device;
Tejun Heo2115ea92006-05-15 21:03:39 +09004092 int rc = 0;
Jeff Garzik23e701e2010-11-17 12:03:58 -05004093 unsigned long irq_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004094
Jeff Garzik35bb94b2006-04-11 13:12:34 -04004095 ap = ata_shost_to_port(shost);
Jeff Garzik005a5a02005-10-30 23:31:48 -05004096
Jeff Garzik23e701e2010-11-17 12:03:58 -05004097 spin_lock_irqsave(ap->lock, irq_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004098
4099 ata_scsi_dump_cdb(ap, cmd);
4100
4101 dev = ata_scsi_find_dev(ap, scsidev);
Brian Kingeb3f0f92006-03-23 17:30:02 -06004102 if (likely(dev))
Jeff Garzikb27dcfb2010-11-17 22:56:48 -05004103 rc = __ata_scsi_queuecmd(cmd, dev);
Brian Kingeb3f0f92006-03-23 17:30:02 -06004104 else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07004105 cmd->result = (DID_BAD_TARGET << 16);
Jeff Garzik23e701e2010-11-17 12:03:58 -05004106 cmd->scsi_done(cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004107 }
4108
Jeff Garzik23e701e2010-11-17 12:03:58 -05004109 spin_unlock_irqrestore(ap->lock, irq_flags);
4110
Tejun Heo2115ea92006-05-15 21:03:39 +09004111 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004112}
Bartlomiej Zolnierkiewicza52fbcf2020-03-26 16:58:04 +01004113EXPORT_SYMBOL_GPL(ata_scsi_queuecmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004114
4115/**
4116 * ata_scsi_simulate - simulate SCSI command on ATA device
Randy Dunlapc893a3a2006-01-28 13:15:32 -05004117 * @dev: the target device
Linus Torvalds1da177e2005-04-16 15:20:36 -07004118 * @cmd: SCSI command being sent to device.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004119 *
4120 * Interprets and directly executes a select list of SCSI commands
4121 * that can be handled internally.
4122 *
4123 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04004124 * spin_lock_irqsave(host lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004125 */
4126
Jeff Garzikb27dcfb2010-11-17 22:56:48 -05004127void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004128{
4129 struct ata_scsi_args args;
Jeff Garzik057ace52005-10-22 14:27:05 -04004130 const u8 *scsicmd = cmd->cmnd;
Jeff Garzik45394142007-09-21 06:23:42 -04004131 u8 tmp8;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004132
Tejun Heo9a3dccc2006-01-06 09:56:18 +01004133 args.dev = dev;
4134 args.id = dev->id;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004135 args.cmd = cmd;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004136
4137 switch(scsicmd[0]) {
Jeff Garzik2dcb4072007-10-19 06:42:56 -04004138 case INQUIRY:
Hannes Reineckebcfc8672016-04-04 11:44:05 +02004139 if (scsicmd[1] & 2) /* is CmdDt set? */
Christoph Hellwig8fc6c062017-01-10 09:41:46 +01004140 ata_scsi_set_invalid_field(dev, cmd, 1, 0xff);
Jeff Garzik2dcb4072007-10-19 06:42:56 -04004141 else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */
4142 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std);
4143 else switch (scsicmd[2]) {
4144 case 0x00:
4145 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004146 break;
Jeff Garzik2dcb4072007-10-19 06:42:56 -04004147 case 0x80:
4148 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004149 break;
Jeff Garzik2dcb4072007-10-19 06:42:56 -04004150 case 0x83:
4151 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004152 break;
Jeff Garzik2dcb4072007-10-19 06:42:56 -04004153 case 0x89:
4154 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004155 break;
Christoph Hellwig18f0f972009-11-17 10:00:47 -05004156 case 0xb0:
4157 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b0);
4158 break;
Matthew Wilcox1e9dbc92008-06-19 13:13:38 -06004159 case 0xb1:
4160 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1);
4161 break;
Martin K. Petersen02e0a602010-09-10 01:23:18 -04004162 case 0xb2:
4163 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b2);
4164 break;
Hannes Reinecke6d1003a2016-04-25 12:45:56 +02004165 case 0xb6:
4166 if (dev->flags & ATA_DFLAG_ZAC) {
4167 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b6);
4168 break;
4169 }
Gustavo A. R. Silvadf561f662020-08-23 17:36:59 -05004170 fallthrough;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004171 default:
Christoph Hellwig8fc6c062017-01-10 09:41:46 +01004172 ata_scsi_set_invalid_field(dev, cmd, 2, 0xff);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004173 break;
Jeff Garzik2dcb4072007-10-19 06:42:56 -04004174 }
4175 break;
4176
4177 case MODE_SENSE:
4178 case MODE_SENSE_10:
4179 ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense);
4180 break;
4181
Jeff Garzik2dcb4072007-10-19 06:42:56 -04004182 case READ_CAPACITY:
4183 ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap);
4184 break;
4185
Hannes Reineckeeb846d92014-11-17 14:25:19 +01004186 case SERVICE_ACTION_IN_16:
Jeff Garzik2dcb4072007-10-19 06:42:56 -04004187 if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16)
4188 ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap);
4189 else
Christoph Hellwig8fc6c062017-01-10 09:41:46 +01004190 ata_scsi_set_invalid_field(dev, cmd, 1, 0xff);
Jeff Garzik2dcb4072007-10-19 06:42:56 -04004191 break;
4192
4193 case REPORT_LUNS:
4194 ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns);
4195 break;
4196
4197 case REQUEST_SENSE:
Hannes Reinecke06dbde52016-04-04 11:44:03 +02004198 ata_scsi_set_sense(dev, cmd, 0, 0, 0);
Jeff Garzik2dcb4072007-10-19 06:42:56 -04004199 cmd->result = (DRIVER_SENSE << 24);
Jeff Garzik2dcb4072007-10-19 06:42:56 -04004200 break;
4201
4202 /* if we reach this, then writeback caching is disabled,
4203 * turning this into a no-op.
4204 */
4205 case SYNCHRONIZE_CACHE:
Gustavo A. R. Silvadf561f662020-08-23 17:36:59 -05004206 fallthrough;
Jeff Garzik2dcb4072007-10-19 06:42:56 -04004207
4208 /* no-op's, complete with success */
4209 case REZERO_UNIT:
4210 case SEEK_6:
4211 case SEEK_10:
4212 case TEST_UNIT_READY:
Jeff Garzik2dcb4072007-10-19 06:42:56 -04004213 break;
4214
4215 case SEND_DIAGNOSTIC:
4216 tmp8 = scsicmd[1] & ~(1 << 3);
Christoph Hellwiga0c0b0e2017-01-10 09:41:47 +01004217 if (tmp8 != 0x4 || scsicmd[3] || scsicmd[4])
Christoph Hellwig8fc6c062017-01-10 09:41:46 +01004218 ata_scsi_set_invalid_field(dev, cmd, 1, 0xff);
Jeff Garzik2dcb4072007-10-19 06:42:56 -04004219 break;
4220
Shaun Tancheff7b203092016-08-21 23:23:19 -05004221 case MAINTENANCE_IN:
4222 if (scsicmd[1] == MI_REPORT_SUPPORTED_OPERATION_CODES)
4223 ata_scsi_rbuf_fill(&args, ata_scsiop_maint_in);
4224 else
Christoph Hellwig8fc6c062017-01-10 09:41:46 +01004225 ata_scsi_set_invalid_field(dev, cmd, 1, 0xff);
Shaun Tancheff7b203092016-08-21 23:23:19 -05004226 break;
4227
Jeff Garzik2dcb4072007-10-19 06:42:56 -04004228 /* all other commands */
4229 default:
Hannes Reinecke06dbde52016-04-04 11:44:03 +02004230 ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x20, 0x0);
Jeff Garzik2dcb4072007-10-19 06:42:56 -04004231 /* "Invalid command operation code" */
Jeff Garzik2dcb4072007-10-19 06:42:56 -04004232 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004233 }
Christoph Hellwig8fc6c062017-01-10 09:41:46 +01004234
4235 cmd->scsi_done(cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004236}
4237
Tejun Heof3187192007-04-17 23:44:07 +09004238int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht)
4239{
4240 int i, rc;
4241
4242 for (i = 0; i < host->n_ports; i++) {
4243 struct ata_port *ap = host->ports[i];
4244 struct Scsi_Host *shost;
4245
4246 rc = -ENOMEM;
4247 shost = scsi_host_alloc(sht, sizeof(struct ata_port *));
4248 if (!shost)
4249 goto err_alloc;
4250
Lin Ming9ee4f392011-12-05 09:20:28 +08004251 shost->eh_noresume = 1;
Tejun Heof3187192007-04-17 23:44:07 +09004252 *(struct ata_port **)&shost->hostdata[0] = ap;
4253 ap->scsi_host = shost;
4254
Gwendal Grignoud9027472010-05-25 12:31:38 -07004255 shost->transportt = ata_scsi_transport_template;
Tejun Heof3187192007-04-17 23:44:07 +09004256 shost->unique_id = ap->print_id;
4257 shost->max_id = 16;
4258 shost->max_lun = 1;
4259 shost->max_channel = 1;
Minwoo Imb1ffbf852017-06-24 03:41:10 +09004260 shost->max_cmd_len = 32;
Tejun Heof3187192007-04-17 23:44:07 +09004261
Tejun Heo31cc23b2007-09-23 13:14:12 +09004262 /* Schedule policy is determined by ->qc_defer()
4263 * callback and it needs to see every deferred qc.
4264 * Set host_blocked to 1 to prevent SCSI midlayer from
4265 * automatically deferring requests.
4266 */
4267 shost->max_host_blocked = 1;
4268
John Garry1d72f7a2020-02-28 19:33:35 +08004269 rc = scsi_add_host_with_dma(shost, &ap->tdev, ap->host->dev);
Tejun Heof3187192007-04-17 23:44:07 +09004270 if (rc)
John Garry1d72f7a2020-02-28 19:33:35 +08004271 goto err_alloc;
Tejun Heof3187192007-04-17 23:44:07 +09004272 }
4273
4274 return 0;
4275
Tejun Heof3187192007-04-17 23:44:07 +09004276 err_alloc:
4277 while (--i >= 0) {
4278 struct Scsi_Host *shost = host->ports[i]->scsi_host;
4279
John Garry1d72f7a2020-02-28 19:33:35 +08004280 /* scsi_host_put() is in ata_devres_release() */
Tejun Heof3187192007-04-17 23:44:07 +09004281 scsi_remove_host(shost);
Tejun Heof3187192007-04-17 23:44:07 +09004282 }
4283 return rc;
4284}
4285
Linus Walleij45b80842020-02-22 12:20:57 +01004286#ifdef CONFIG_OF
4287static void ata_scsi_assign_ofnode(struct ata_device *dev, struct ata_port *ap)
4288{
4289 struct scsi_device *sdev = dev->sdev;
4290 struct device *d = ap->host->dev;
4291 struct device_node *np = d->of_node;
4292 struct device_node *child;
4293
4294 for_each_available_child_of_node(np, child) {
4295 int ret;
4296 u32 val;
4297
4298 ret = of_property_read_u32(child, "reg", &val);
4299 if (ret)
4300 continue;
4301 if (val == dev->devno) {
4302 dev_dbg(d, "found matching device node\n");
4303 sdev->sdev_gendev.of_node = child;
4304 return;
4305 }
4306 }
4307}
4308#else
4309static void ata_scsi_assign_ofnode(struct ata_device *dev, struct ata_port *ap)
4310{
4311}
4312#endif
4313
Tejun Heo1ae46312007-07-16 14:29:40 +09004314void ata_scsi_scan_host(struct ata_port *ap, int sync)
Jeff Garzik644dd0c2005-10-03 15:55:19 -04004315{
Tejun Heo1ae46312007-07-16 14:29:40 +09004316 int tries = 5;
4317 struct ata_device *last_failed_dev = NULL;
Tejun Heo41bda9c2007-08-06 18:36:24 +09004318 struct ata_link *link;
Tejun Heo1ae46312007-07-16 14:29:40 +09004319 struct ata_device *dev;
Jeff Garzik644dd0c2005-10-03 15:55:19 -04004320
Tejun Heo1ae46312007-07-16 14:29:40 +09004321 repeat:
Tejun Heo1eca4362008-11-03 20:03:17 +09004322 ata_for_each_link(link, ap, EDGE) {
4323 ata_for_each_dev(dev, link, ENABLED) {
Tejun Heo41bda9c2007-08-06 18:36:24 +09004324 struct scsi_device *sdev;
4325 int channel = 0, id = 0;
Jeff Garzik3f19ee82005-10-03 21:36:41 -04004326
Tejun Heo1eca4362008-11-03 20:03:17 +09004327 if (dev->sdev)
Tejun Heo41bda9c2007-08-06 18:36:24 +09004328 continue;
Tejun Heo3edebac2006-05-31 18:27:40 +09004329
Tejun Heo41bda9c2007-08-06 18:36:24 +09004330 if (ata_is_host_link(link))
4331 id = dev->devno;
4332 else
4333 channel = link->pmp;
4334
4335 sdev = __scsi_add_device(ap->scsi_host, channel, id, 0,
4336 NULL);
4337 if (!IS_ERR(sdev)) {
4338 dev->sdev = sdev;
Linus Walleij45b80842020-02-22 12:20:57 +01004339 ata_scsi_assign_ofnode(dev, ap);
Tejun Heo41bda9c2007-08-06 18:36:24 +09004340 scsi_device_put(sdev);
Grant Grundler295124d2010-08-17 10:56:53 -07004341 } else {
4342 dev->sdev = NULL;
Tejun Heo41bda9c2007-08-06 18:36:24 +09004343 }
Tejun Heo3edebac2006-05-31 18:27:40 +09004344 }
Jeff Garzik3f19ee82005-10-03 21:36:41 -04004345 }
Tejun Heo1ae46312007-07-16 14:29:40 +09004346
4347 /* If we scanned while EH was in progress or allocation
4348 * failure occurred, scan would have failed silently. Check
4349 * whether all devices are attached.
4350 */
Tejun Heo1eca4362008-11-03 20:03:17 +09004351 ata_for_each_link(link, ap, EDGE) {
4352 ata_for_each_dev(dev, link, ENABLED) {
4353 if (!dev->sdev)
Tejun Heo41bda9c2007-08-06 18:36:24 +09004354 goto exit_loop;
4355 }
Tejun Heo1ae46312007-07-16 14:29:40 +09004356 }
Tejun Heo41bda9c2007-08-06 18:36:24 +09004357 exit_loop:
4358 if (!link)
Tejun Heo1ae46312007-07-16 14:29:40 +09004359 return;
4360
4361 /* we're missing some SCSI devices */
4362 if (sync) {
4363 /* If caller requested synchrnous scan && we've made
4364 * any progress, sleep briefly and repeat.
4365 */
4366 if (dev != last_failed_dev) {
4367 msleep(100);
4368 last_failed_dev = dev;
4369 goto repeat;
4370 }
4371
4372 /* We might be failing to detect boot device, give it
4373 * a few more chances.
4374 */
4375 if (--tries) {
4376 msleep(100);
4377 goto repeat;
4378 }
4379
Joe Perchesa9a79df2011-04-15 15:51:59 -07004380 ata_port_err(ap,
4381 "WARNING: synchronous SCSI scan failed without making any progress, switching to async\n");
Tejun Heo1ae46312007-07-16 14:29:40 +09004382 }
4383
Tejun Heoad72cf92010-07-02 10:03:52 +02004384 queue_delayed_work(system_long_wq, &ap->hotplug_task,
Tejun Heo1ae46312007-07-16 14:29:40 +09004385 round_jiffies_relative(HZ));
Jeff Garzik644dd0c2005-10-03 15:55:19 -04004386}
Tejun Heo0ea035a2006-05-31 18:28:01 +09004387
4388/**
4389 * ata_scsi_offline_dev - offline attached SCSI device
4390 * @dev: ATA device to offline attached SCSI device for
4391 *
4392 * This function is called from ata_eh_hotplug() and responsible
4393 * for taking the SCSI device attached to @dev offline. This
Jeff Garzikcca39742006-08-24 03:19:22 -04004394 * function is called with host lock which protects dev->sdev
Tejun Heo0ea035a2006-05-31 18:28:01 +09004395 * against clearing.
4396 *
4397 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04004398 * spin_lock_irqsave(host lock)
Tejun Heo0ea035a2006-05-31 18:28:01 +09004399 *
4400 * RETURNS:
4401 * 1 if attached SCSI device exists, 0 otherwise.
4402 */
4403int ata_scsi_offline_dev(struct ata_device *dev)
4404{
4405 if (dev->sdev) {
4406 scsi_device_set_state(dev->sdev, SDEV_OFFLINE);
4407 return 1;
4408 }
4409 return 0;
4410}
Tejun Heo580b21022006-05-31 18:28:05 +09004411
4412/**
4413 * ata_scsi_remove_dev - remove attached SCSI device
4414 * @dev: ATA device to remove attached SCSI device for
4415 *
4416 * This function is called from ata_eh_scsi_hotplug() and
4417 * responsible for removing the SCSI device attached to @dev.
4418 *
4419 * LOCKING:
4420 * Kernel thread context (may sleep).
4421 */
4422static void ata_scsi_remove_dev(struct ata_device *dev)
4423{
Tejun Heo9af5c9c2007-08-06 18:36:22 +09004424 struct ata_port *ap = dev->link->ap;
Tejun Heo580b21022006-05-31 18:28:05 +09004425 struct scsi_device *sdev;
4426 unsigned long flags;
4427
4428 /* Alas, we need to grab scan_mutex to ensure SCSI device
4429 * state doesn't change underneath us and thus
4430 * scsi_device_get() always succeeds. The mutex locking can
4431 * be removed if there is __scsi_device_get() interface which
4432 * increments reference counts regardless of device state.
4433 */
Jeff Garzikcca39742006-08-24 03:19:22 -04004434 mutex_lock(&ap->scsi_host->scan_mutex);
Jeff Garzikba6a1302006-06-22 23:46:10 -04004435 spin_lock_irqsave(ap->lock, flags);
Tejun Heo580b21022006-05-31 18:28:05 +09004436
Jeff Garzikcca39742006-08-24 03:19:22 -04004437 /* clearing dev->sdev is protected by host lock */
Tejun Heo580b21022006-05-31 18:28:05 +09004438 sdev = dev->sdev;
4439 dev->sdev = NULL;
4440
4441 if (sdev) {
4442 /* If user initiated unplug races with us, sdev can go
Jeff Garzikcca39742006-08-24 03:19:22 -04004443 * away underneath us after the host lock and
Tejun Heo580b21022006-05-31 18:28:05 +09004444 * scan_mutex are released. Hold onto it.
4445 */
4446 if (scsi_device_get(sdev) == 0) {
4447 /* The following ensures the attached sdev is
4448 * offline on return from ata_scsi_offline_dev()
4449 * regardless it wins or loses the race
4450 * against this function.
4451 */
4452 scsi_device_set_state(sdev, SDEV_OFFLINE);
4453 } else {
4454 WARN_ON(1);
4455 sdev = NULL;
4456 }
4457 }
4458
Jeff Garzikba6a1302006-06-22 23:46:10 -04004459 spin_unlock_irqrestore(ap->lock, flags);
Jeff Garzikcca39742006-08-24 03:19:22 -04004460 mutex_unlock(&ap->scsi_host->scan_mutex);
Tejun Heo580b21022006-05-31 18:28:05 +09004461
4462 if (sdev) {
Joe Perchesa9a79df2011-04-15 15:51:59 -07004463 ata_dev_info(dev, "detaching (SCSI %s)\n",
4464 dev_name(&sdev->sdev_gendev));
Tejun Heo580b21022006-05-31 18:28:05 +09004465
4466 scsi_remove_device(sdev);
4467 scsi_device_put(sdev);
4468 }
4469}
4470
Tejun Heo41bda9c2007-08-06 18:36:24 +09004471static void ata_scsi_handle_link_detach(struct ata_link *link)
4472{
4473 struct ata_port *ap = link->ap;
4474 struct ata_device *dev;
4475
Tejun Heo1eca4362008-11-03 20:03:17 +09004476 ata_for_each_dev(dev, link, ALL) {
Tejun Heo41bda9c2007-08-06 18:36:24 +09004477 unsigned long flags;
4478
4479 if (!(dev->flags & ATA_DFLAG_DETACHED))
4480 continue;
4481
4482 spin_lock_irqsave(ap->lock, flags);
4483 dev->flags &= ~ATA_DFLAG_DETACHED;
4484 spin_unlock_irqrestore(ap->lock, flags);
4485
Aaron Luf1bc1e42013-08-23 10:17:54 +08004486 if (zpodd_dev_enabled(dev))
4487 zpodd_exit(dev);
4488
Tejun Heo41bda9c2007-08-06 18:36:24 +09004489 ata_scsi_remove_dev(dev);
4490 }
4491}
4492
Tejun Heo580b21022006-05-31 18:28:05 +09004493/**
Kristen Carlson Accardi2f294962007-08-15 04:11:25 -04004494 * ata_scsi_media_change_notify - send media change event
Randy Dunlapc5d0e6a2007-10-15 17:29:46 -07004495 * @dev: Pointer to the disk device with media change event
Kristen Carlson Accardi2f294962007-08-15 04:11:25 -04004496 *
4497 * Tell the block layer to send a media change notification
4498 * event.
4499 *
4500 * LOCKING:
Tejun Heo854c73a2007-09-23 13:14:11 +09004501 * spin_lock_irqsave(host lock)
Kristen Carlson Accardi2f294962007-08-15 04:11:25 -04004502 */
Tejun Heo854c73a2007-09-23 13:14:11 +09004503void ata_scsi_media_change_notify(struct ata_device *dev)
Kristen Carlson Accardi2f294962007-08-15 04:11:25 -04004504{
Tejun Heo854c73a2007-09-23 13:14:11 +09004505 if (dev->sdev)
Jeff Garzikf26792d2007-10-29 17:18:39 -04004506 sdev_evt_send_simple(dev->sdev, SDEV_EVT_MEDIA_CHANGE,
4507 GFP_ATOMIC);
Kristen Carlson Accardi2f294962007-08-15 04:11:25 -04004508}
Kristen Carlson Accardi2f294962007-08-15 04:11:25 -04004509
4510/**
Tejun Heo580b21022006-05-31 18:28:05 +09004511 * ata_scsi_hotplug - SCSI part of hotplug
David Howells65f27f32006-11-22 14:55:48 +00004512 * @work: Pointer to ATA port to perform SCSI hotplug on
Tejun Heo580b21022006-05-31 18:28:05 +09004513 *
4514 * Perform SCSI part of hotplug. It's executed from a separate
4515 * workqueue after EH completes. This is necessary because SCSI
4516 * hot plugging requires working EH and hot unplugging is
4517 * synchronized with hot plugging with a mutex.
4518 *
4519 * LOCKING:
4520 * Kernel thread context (may sleep).
4521 */
David Howells65f27f32006-11-22 14:55:48 +00004522void ata_scsi_hotplug(struct work_struct *work)
Tejun Heo580b21022006-05-31 18:28:05 +09004523{
David Howells65f27f32006-11-22 14:55:48 +00004524 struct ata_port *ap =
4525 container_of(work, struct ata_port, hotplug_task.work);
Tejun Heo41bda9c2007-08-06 18:36:24 +09004526 int i;
Tejun Heo580b21022006-05-31 18:28:05 +09004527
Tejun Heob51e9e52006-06-29 01:29:30 +09004528 if (ap->pflags & ATA_PFLAG_UNLOADING) {
Tejun Heo580b21022006-05-31 18:28:05 +09004529 DPRINTK("ENTER/EXIT - unloading\n");
4530 return;
4531 }
4532
4533 DPRINTK("ENTER\n");
Tejun Heoad72cf92010-07-02 10:03:52 +02004534 mutex_lock(&ap->scsi_scan_mutex);
Tejun Heo580b21022006-05-31 18:28:05 +09004535
Tejun Heo41bda9c2007-08-06 18:36:24 +09004536 /* Unplug detached devices. We cannot use link iterator here
4537 * because PMP links have to be scanned even if PMP is
4538 * currently not attached. Iterate manually.
4539 */
4540 ata_scsi_handle_link_detach(&ap->link);
4541 if (ap->pmp_link)
4542 for (i = 0; i < SATA_PMP_MAX_PORTS; i++)
4543 ata_scsi_handle_link_detach(&ap->pmp_link[i]);
Tejun Heo580b21022006-05-31 18:28:05 +09004544
4545 /* scan for new ones */
Tejun Heo1ae46312007-07-16 14:29:40 +09004546 ata_scsi_scan_host(ap, 0);
Tejun Heo580b21022006-05-31 18:28:05 +09004547
Tejun Heoad72cf92010-07-02 10:03:52 +02004548 mutex_unlock(&ap->scsi_scan_mutex);
Tejun Heo580b21022006-05-31 18:28:05 +09004549 DPRINTK("EXIT\n");
4550}
Tejun Heo83c47bc2006-05-31 18:28:07 +09004551
4552/**
4553 * ata_scsi_user_scan - indication for user-initiated bus scan
4554 * @shost: SCSI host to scan
4555 * @channel: Channel to scan
4556 * @id: ID to scan
4557 * @lun: LUN to scan
4558 *
4559 * This function is called when user explicitly requests bus
4560 * scan. Set probe pending flag and invoke EH.
4561 *
4562 * LOCKING:
4563 * SCSI layer (we don't care)
4564 *
4565 * RETURNS:
4566 * Zero.
4567 */
Gwendal Grignoud9027472010-05-25 12:31:38 -07004568int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel,
Hannes Reinecke9cb78c12014-06-25 15:27:36 +02004569 unsigned int id, u64 lun)
Tejun Heo83c47bc2006-05-31 18:28:07 +09004570{
4571 struct ata_port *ap = ata_shost_to_port(shost);
4572 unsigned long flags;
Tejun Heo41bda9c2007-08-06 18:36:24 +09004573 int devno, rc = 0;
Tejun Heo83c47bc2006-05-31 18:28:07 +09004574
4575 if (!ap->ops->error_handler)
4576 return -EOPNOTSUPP;
4577
Tejun Heo41bda9c2007-08-06 18:36:24 +09004578 if (lun != SCAN_WILD_CARD && lun)
Tejun Heo83c47bc2006-05-31 18:28:07 +09004579 return -EINVAL;
4580
Tejun Heo071f44b2008-04-07 22:47:22 +09004581 if (!sata_pmp_attached(ap)) {
Tejun Heo41bda9c2007-08-06 18:36:24 +09004582 if (channel != SCAN_WILD_CARD && channel)
4583 return -EINVAL;
4584 devno = id;
4585 } else {
4586 if (id != SCAN_WILD_CARD && id)
4587 return -EINVAL;
4588 devno = channel;
4589 }
4590
Jeff Garzikba6a1302006-06-22 23:46:10 -04004591 spin_lock_irqsave(ap->lock, flags);
Tejun Heo83c47bc2006-05-31 18:28:07 +09004592
Tejun Heo41bda9c2007-08-06 18:36:24 +09004593 if (devno == SCAN_WILD_CARD) {
4594 struct ata_link *link;
4595
Tejun Heo1eca4362008-11-03 20:03:17 +09004596 ata_for_each_link(link, ap, EDGE) {
Tejun Heo41bda9c2007-08-06 18:36:24 +09004597 struct ata_eh_info *ehi = &link->eh_info;
Tejun Heob558edd2008-01-24 00:05:14 +09004598 ehi->probe_mask |= ATA_ALL_DEVICES;
Tejun Heocf480622008-01-24 00:05:14 +09004599 ehi->action |= ATA_EH_RESET;
Tejun Heo41bda9c2007-08-06 18:36:24 +09004600 }
Tejun Heo83c47bc2006-05-31 18:28:07 +09004601 } else {
Tejun Heo41bda9c2007-08-06 18:36:24 +09004602 struct ata_device *dev = ata_find_dev(ap, devno);
Tejun Heo83c47bc2006-05-31 18:28:07 +09004603
4604 if (dev) {
Tejun Heo41bda9c2007-08-06 18:36:24 +09004605 struct ata_eh_info *ehi = &dev->link->eh_info;
Tejun Heo9af5c9c2007-08-06 18:36:22 +09004606 ehi->probe_mask |= 1 << dev->devno;
Tejun Heocf480622008-01-24 00:05:14 +09004607 ehi->action |= ATA_EH_RESET;
Tejun Heo83c47bc2006-05-31 18:28:07 +09004608 } else
4609 rc = -EINVAL;
4610 }
4611
Tejun Heo309afcb2006-09-30 18:07:17 +09004612 if (rc == 0) {
Tejun Heo83c47bc2006-05-31 18:28:07 +09004613 ata_port_schedule_eh(ap);
Tejun Heo309afcb2006-09-30 18:07:17 +09004614 spin_unlock_irqrestore(ap->lock, flags);
4615 ata_port_wait_eh(ap);
4616 } else
4617 spin_unlock_irqrestore(ap->lock, flags);
Tejun Heo83c47bc2006-05-31 18:28:07 +09004618
4619 return rc;
4620}
zhao, forrest3057ac32006-06-12 12:01:34 +08004621
4622/**
Tejun Heod0171262006-06-12 22:51:14 +09004623 * ata_scsi_dev_rescan - initiate scsi_rescan_device()
David Howells65f27f32006-11-22 14:55:48 +00004624 * @work: Pointer to ATA port to perform scsi_rescan_device()
zhao, forrest3057ac32006-06-12 12:01:34 +08004625 *
Tejun Heod0171262006-06-12 22:51:14 +09004626 * After ATA pass thru (SAT) commands are executed successfully,
Tejun Heoad72cf92010-07-02 10:03:52 +02004627 * libata need to propagate the changes to SCSI layer.
zhao, forrest3057ac32006-06-12 12:01:34 +08004628 *
Tejun Heod0171262006-06-12 22:51:14 +09004629 * LOCKING:
4630 * Kernel thread context (may sleep).
zhao, forrest3057ac32006-06-12 12:01:34 +08004631 */
David Howells65f27f32006-11-22 14:55:48 +00004632void ata_scsi_dev_rescan(struct work_struct *work)
zhao, forrest3057ac32006-06-12 12:01:34 +08004633{
David Howells65f27f32006-11-22 14:55:48 +00004634 struct ata_port *ap =
4635 container_of(work, struct ata_port, scsi_rescan_task);
Tejun Heo41bda9c2007-08-06 18:36:24 +09004636 struct ata_link *link;
Tejun Heof58229f2007-08-06 18:36:23 +09004637 struct ata_device *dev;
Tejun Heof84e7e42006-11-22 11:21:31 +09004638 unsigned long flags;
zhao, forrest3057ac32006-06-12 12:01:34 +08004639
Tejun Heoad72cf92010-07-02 10:03:52 +02004640 mutex_lock(&ap->scsi_scan_mutex);
Tejun Heof84e7e42006-11-22 11:21:31 +09004641 spin_lock_irqsave(ap->lock, flags);
zhao, forrest3057ac32006-06-12 12:01:34 +08004642
Tejun Heo1eca4362008-11-03 20:03:17 +09004643 ata_for_each_link(link, ap, EDGE) {
4644 ata_for_each_dev(dev, link, ENABLED) {
Tejun Heo41bda9c2007-08-06 18:36:24 +09004645 struct scsi_device *sdev = dev->sdev;
Tejun Heof84e7e42006-11-22 11:21:31 +09004646
Tejun Heo1eca4362008-11-03 20:03:17 +09004647 if (!sdev)
Tejun Heo41bda9c2007-08-06 18:36:24 +09004648 continue;
4649 if (scsi_device_get(sdev))
4650 continue;
Tejun Heof84e7e42006-11-22 11:21:31 +09004651
Tejun Heo41bda9c2007-08-06 18:36:24 +09004652 spin_unlock_irqrestore(ap->lock, flags);
4653 scsi_rescan_device(&(sdev->sdev_gendev));
4654 scsi_device_put(sdev);
4655 spin_lock_irqsave(ap->lock, flags);
4656 }
zhao, forrest3057ac32006-06-12 12:01:34 +08004657 }
Tejun Heof84e7e42006-11-22 11:21:31 +09004658
4659 spin_unlock_irqrestore(ap->lock, flags);
Tejun Heoad72cf92010-07-02 10:03:52 +02004660 mutex_unlock(&ap->scsi_scan_mutex);
zhao, forrest3057ac32006-06-12 12:01:34 +08004661}