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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 | |
18 | void 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 | |
35 | u64 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 | } |
49 | EXPORT_SYMBOL_GPL(ide_get_lba_addr); |
50 | |
51 | static 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 | |
75 | static 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 | |
105 | static 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 | |
133 | u8 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 | } |
171 | EXPORT_SYMBOL(ide_dump_status); |
172 |
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