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1#include <linux/types.h>
2#include <linux/string.h>
3#include <linux/kernel.h>
4#include <linux/interrupt.h>
5#include <linux/ide.h>
6#include <linux/bitops.h>
7
8/**
9 * ide_toggle_bounce - handle bounce buffering
10 * @drive: drive to update
11 * @on: on/off boolean
12 *
13 * Enable or disable bounce buffering for the device. Drives move
14 * between PIO and DMA and that changes the rules we need.
15 */
16
17void ide_toggle_bounce(ide_drive_t *drive, int on)
18{
19 u64 addr = BLK_BOUNCE_HIGH; /* dma64_addr_t */
20
21 if (!PCI_DMA_BUS_IS_PHYS) {
22 addr = BLK_BOUNCE_ANY;
23 } else if (on && drive->media == ide_disk) {
24 struct device *dev = drive->hwif->dev;
25
26 if (dev && dev->dma_mask)
27 addr = *dev->dma_mask;
28 }
29
30 if (drive->queue)
31 blk_queue_bounce_limit(drive->queue, addr);
32}
33
34u64 ide_get_lba_addr(struct ide_cmd *cmd, int lba48)
35{
36 struct ide_taskfile *tf = &cmd->tf;
37 u32 high, low;
38
39 low = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal;
40 if (lba48) {
41 tf = &cmd->hob;
42 high = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal;
43 } else
44 high = tf->device & 0xf;
45
46 return ((u64)high << 24) | low;
47}
48EXPORT_SYMBOL_GPL(ide_get_lba_addr);
49
50static void ide_dump_sector(ide_drive_t *drive)
51{
52 struct ide_cmd cmd;
53 struct ide_taskfile *tf = &cmd.tf;
54 u8 lba48 = !!(drive->dev_flags & IDE_DFLAG_LBA48);
55
56 memset(&cmd, 0, sizeof(cmd));
57 if (lba48) {
58 cmd.valid.in.tf = IDE_VALID_LBA;
59 cmd.valid.in.hob = IDE_VALID_LBA;
60 cmd.tf_flags = IDE_TFLAG_LBA48;
61 } else
62 cmd.valid.in.tf = IDE_VALID_LBA | IDE_VALID_DEVICE;
63
64 ide_tf_readback(drive, &cmd);
65
66 if (lba48 || (tf->device & ATA_LBA))
67 printk(KERN_CONT ", LBAsect=%llu",
68 (unsigned long long)ide_get_lba_addr(&cmd, lba48));
69 else
70 printk(KERN_CONT ", CHS=%d/%d/%d", (tf->lbah << 8) + tf->lbam,
71 tf->device & 0xf, tf->lbal);
72}
73
74static void ide_dump_ata_error(ide_drive_t *drive, u8 err)
75{
76 printk(KERN_CONT "{ ");
77 if (err & ATA_ABORTED)
78 printk(KERN_CONT "DriveStatusError ");
79 if (err & ATA_ICRC)
80 printk(KERN_CONT "%s",
81 (err & ATA_ABORTED) ? "BadCRC " : "BadSector ");
82 if (err & ATA_UNC)
83 printk(KERN_CONT "UncorrectableError ");
84 if (err & ATA_IDNF)
85 printk(KERN_CONT "SectorIdNotFound ");
86 if (err & ATA_TRK0NF)
87 printk(KERN_CONT "TrackZeroNotFound ");
88 if (err & ATA_AMNF)
89 printk(KERN_CONT "AddrMarkNotFound ");
90 printk(KERN_CONT "}");
91 if ((err & (ATA_BBK | ATA_ABORTED)) == ATA_BBK ||
92 (err & (ATA_UNC | ATA_IDNF | ATA_AMNF))) {
93 struct request *rq = drive->hwif->rq;
94
95 ide_dump_sector(drive);
96
97 if (rq)
98 printk(KERN_CONT ", sector=%llu",
99 (unsigned long long)blk_rq_pos(rq));
100 }
101 printk(KERN_CONT "\n");
102}
103
104static void ide_dump_atapi_error(ide_drive_t *drive, u8 err)
105{
106 printk(KERN_CONT "{ ");
107 if (err & ATAPI_ILI)
108 printk(KERN_CONT "IllegalLengthIndication ");
109 if (err & ATAPI_EOM)
110 printk(KERN_CONT "EndOfMedia ");
111 if (err & ATA_ABORTED)
112 printk(KERN_CONT "AbortedCommand ");
113 if (err & ATA_MCR)
114 printk(KERN_CONT "MediaChangeRequested ");
115 if (err & ATAPI_LFS)
116 printk(KERN_CONT "LastFailedSense=0x%02x ",
117 (err & ATAPI_LFS) >> 4);
118 printk(KERN_CONT "}\n");
119}
120
121/**
122 * ide_dump_status - translate ATA/ATAPI error
123 * @drive: drive that status applies to
124 * @msg: text message to print
125 * @stat: status byte to decode
126 *
127 * Error reporting, in human readable form (luxurious, but a memory hog).
128 * Combines the drive name, message and status byte to provide a
129 * user understandable explanation of the device error.
130 */
131
132u8 ide_dump_status(ide_drive_t *drive, const char *msg, u8 stat)
133{
134 u8 err = 0;
135
136 printk(KERN_ERR "%s: %s: status=0x%02x { ", drive->name, msg, stat);
137 if (stat & ATA_BUSY)
138 printk(KERN_CONT "Busy ");
139 else {
140 if (stat & ATA_DRDY)
141 printk(KERN_CONT "DriveReady ");
142 if (stat & ATA_DF)
143 printk(KERN_CONT "DeviceFault ");
144 if (stat & ATA_DSC)
145 printk(KERN_CONT "SeekComplete ");
146 if (stat & ATA_DRQ)
147 printk(KERN_CONT "DataRequest ");
148 if (stat & ATA_CORR)
149 printk(KERN_CONT "CorrectedError ");
150 if (stat & ATA_IDX)
151 printk(KERN_CONT "Index ");
152 if (stat & ATA_ERR)
153 printk(KERN_CONT "Error ");
154 }
155 printk(KERN_CONT "}\n");
156 if ((stat & (ATA_BUSY | ATA_ERR)) == ATA_ERR) {
157 err = ide_read_error(drive);
158 printk(KERN_ERR "%s: %s: error=0x%02x ", drive->name, msg, err);
159 if (drive->media == ide_disk)
160 ide_dump_ata_error(drive, err);
161 else
162 ide_dump_atapi_error(drive, err);
163 }
164
165 printk(KERN_ERR "%s: possibly failed opcode: 0x%02x\n",
166 drive->name, drive->hwif->cmd.tf.command);
167
168 return err;
169}
170EXPORT_SYMBOL(ide_dump_status);
1#include <linux/types.h>
2#include <linux/string.h>
3#include <linux/kernel.h>
4#include <linux/export.h>
5#include <linux/interrupt.h>
6#include <linux/ide.h>
7#include <linux/bitops.h>
8
9/**
10 * ide_toggle_bounce - handle bounce buffering
11 * @drive: drive to update
12 * @on: on/off boolean
13 *
14 * Enable or disable bounce buffering for the device. Drives move
15 * between PIO and DMA and that changes the rules we need.
16 */
17
18void ide_toggle_bounce(ide_drive_t *drive, int on)
19{
20 u64 addr = BLK_BOUNCE_HIGH; /* dma64_addr_t */
21
22 if (!PCI_DMA_BUS_IS_PHYS) {
23 addr = BLK_BOUNCE_ANY;
24 } else if (on && drive->media == ide_disk) {
25 struct device *dev = drive->hwif->dev;
26
27 if (dev && dev->dma_mask)
28 addr = *dev->dma_mask;
29 }
30
31 if (drive->queue)
32 blk_queue_bounce_limit(drive->queue, addr);
33}
34
35u64 ide_get_lba_addr(struct ide_cmd *cmd, int lba48)
36{
37 struct ide_taskfile *tf = &cmd->tf;
38 u32 high, low;
39
40 low = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal;
41 if (lba48) {
42 tf = &cmd->hob;
43 high = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal;
44 } else
45 high = tf->device & 0xf;
46
47 return ((u64)high << 24) | low;
48}
49EXPORT_SYMBOL_GPL(ide_get_lba_addr);
50
51static void ide_dump_sector(ide_drive_t *drive)
52{
53 struct ide_cmd cmd;
54 struct ide_taskfile *tf = &cmd.tf;
55 u8 lba48 = !!(drive->dev_flags & IDE_DFLAG_LBA48);
56
57 memset(&cmd, 0, sizeof(cmd));
58 if (lba48) {
59 cmd.valid.in.tf = IDE_VALID_LBA;
60 cmd.valid.in.hob = IDE_VALID_LBA;
61 cmd.tf_flags = IDE_TFLAG_LBA48;
62 } else
63 cmd.valid.in.tf = IDE_VALID_LBA | IDE_VALID_DEVICE;
64
65 ide_tf_readback(drive, &cmd);
66
67 if (lba48 || (tf->device & ATA_LBA))
68 printk(KERN_CONT ", LBAsect=%llu",
69 (unsigned long long)ide_get_lba_addr(&cmd, lba48));
70 else
71 printk(KERN_CONT ", CHS=%d/%d/%d", (tf->lbah << 8) + tf->lbam,
72 tf->device & 0xf, tf->lbal);
73}
74
75static void ide_dump_ata_error(ide_drive_t *drive, u8 err)
76{
77 printk(KERN_CONT "{ ");
78 if (err & ATA_ABORTED)
79 printk(KERN_CONT "DriveStatusError ");
80 if (err & ATA_ICRC)
81 printk(KERN_CONT "%s",
82 (err & ATA_ABORTED) ? "BadCRC " : "BadSector ");
83 if (err & ATA_UNC)
84 printk(KERN_CONT "UncorrectableError ");
85 if (err & ATA_IDNF)
86 printk(KERN_CONT "SectorIdNotFound ");
87 if (err & ATA_TRK0NF)
88 printk(KERN_CONT "TrackZeroNotFound ");
89 if (err & ATA_AMNF)
90 printk(KERN_CONT "AddrMarkNotFound ");
91 printk(KERN_CONT "}");
92 if ((err & (ATA_BBK | ATA_ABORTED)) == ATA_BBK ||
93 (err & (ATA_UNC | ATA_IDNF | ATA_AMNF))) {
94 struct request *rq = drive->hwif->rq;
95
96 ide_dump_sector(drive);
97
98 if (rq)
99 printk(KERN_CONT ", sector=%llu",
100 (unsigned long long)blk_rq_pos(rq));
101 }
102 printk(KERN_CONT "\n");
103}
104
105static void ide_dump_atapi_error(ide_drive_t *drive, u8 err)
106{
107 printk(KERN_CONT "{ ");
108 if (err & ATAPI_ILI)
109 printk(KERN_CONT "IllegalLengthIndication ");
110 if (err & ATAPI_EOM)
111 printk(KERN_CONT "EndOfMedia ");
112 if (err & ATA_ABORTED)
113 printk(KERN_CONT "AbortedCommand ");
114 if (err & ATA_MCR)
115 printk(KERN_CONT "MediaChangeRequested ");
116 if (err & ATAPI_LFS)
117 printk(KERN_CONT "LastFailedSense=0x%02x ",
118 (err & ATAPI_LFS) >> 4);
119 printk(KERN_CONT "}\n");
120}
121
122/**
123 * ide_dump_status - translate ATA/ATAPI error
124 * @drive: drive that status applies to
125 * @msg: text message to print
126 * @stat: status byte to decode
127 *
128 * Error reporting, in human readable form (luxurious, but a memory hog).
129 * Combines the drive name, message and status byte to provide a
130 * user understandable explanation of the device error.
131 */
132
133u8 ide_dump_status(ide_drive_t *drive, const char *msg, u8 stat)
134{
135 u8 err = 0;
136
137 printk(KERN_ERR "%s: %s: status=0x%02x { ", drive->name, msg, stat);
138 if (stat & ATA_BUSY)
139 printk(KERN_CONT "Busy ");
140 else {
141 if (stat & ATA_DRDY)
142 printk(KERN_CONT "DriveReady ");
143 if (stat & ATA_DF)
144 printk(KERN_CONT "DeviceFault ");
145 if (stat & ATA_DSC)
146 printk(KERN_CONT "SeekComplete ");
147 if (stat & ATA_DRQ)
148 printk(KERN_CONT "DataRequest ");
149 if (stat & ATA_CORR)
150 printk(KERN_CONT "CorrectedError ");
151 if (stat & ATA_IDX)
152 printk(KERN_CONT "Index ");
153 if (stat & ATA_ERR)
154 printk(KERN_CONT "Error ");
155 }
156 printk(KERN_CONT "}\n");
157 if ((stat & (ATA_BUSY | ATA_ERR)) == ATA_ERR) {
158 err = ide_read_error(drive);
159 printk(KERN_ERR "%s: %s: error=0x%02x ", drive->name, msg, err);
160 if (drive->media == ide_disk)
161 ide_dump_ata_error(drive, err);
162 else
163 ide_dump_atapi_error(drive, err);
164 }
165
166 printk(KERN_ERR "%s: possibly failed opcode: 0x%02x\n",
167 drive->name, drive->hwif->cmd.tf.command);
168
169 return err;
170}
171EXPORT_SYMBOL(ide_dump_status);