1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
|
#include <linux/kernel.h>
#include <linux/ide.h>
#if defined(CONFIG_ARM) || defined(CONFIG_M68K) || defined(CONFIG_MIPS) || \
defined(CONFIG_PARISC) || defined(CONFIG_PPC) || defined(CONFIG_SPARC)
#include <asm/ide.h>
#else
#include <asm-generic/ide_iops.h>
#endif
/*
* Conventional PIO operations for ATA devices
*/
static u8 ide_inb(unsigned long port)
{
return (u8) inb(port);
}
static void ide_outb(u8 val, unsigned long port)
{
outb(val, port);
}
/*
* MMIO operations, typically used for SATA controllers
*/
static u8 ide_mm_inb(unsigned long port)
{
return (u8) readb((void __iomem *) port);
}
static void ide_mm_outb(u8 value, unsigned long port)
{
writeb(value, (void __iomem *) port);
}
void ide_exec_command(ide_hwif_t *hwif, u8 cmd)
{
if (hwif->host_flags & IDE_HFLAG_MMIO)
writeb(cmd, (void __iomem *)hwif->io_ports.command_addr);
else
outb(cmd, hwif->io_ports.command_addr);
}
EXPORT_SYMBOL_GPL(ide_exec_command);
u8 ide_read_status(ide_hwif_t *hwif)
{
if (hwif->host_flags & IDE_HFLAG_MMIO)
return readb((void __iomem *)hwif->io_ports.status_addr);
else
return inb(hwif->io_ports.status_addr);
}
EXPORT_SYMBOL_GPL(ide_read_status);
u8 ide_read_altstatus(ide_hwif_t *hwif)
{
if (hwif->host_flags & IDE_HFLAG_MMIO)
return readb((void __iomem *)hwif->io_ports.ctl_addr);
else
return inb(hwif->io_ports.ctl_addr);
}
EXPORT_SYMBOL_GPL(ide_read_altstatus);
void ide_write_devctl(ide_hwif_t *hwif, u8 ctl)
{
if (hwif->host_flags & IDE_HFLAG_MMIO)
writeb(ctl, (void __iomem *)hwif->io_ports.ctl_addr);
else
outb(ctl, hwif->io_ports.ctl_addr);
}
EXPORT_SYMBOL_GPL(ide_write_devctl);
void ide_tf_load(ide_drive_t *drive, struct ide_cmd *cmd)
{
ide_hwif_t *hwif = drive->hwif;
struct ide_io_ports *io_ports = &hwif->io_ports;
struct ide_taskfile *tf = &cmd->tf;
void (*tf_outb)(u8 addr, unsigned long port);
u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
u8 HIHI = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
if (mmio)
tf_outb = ide_mm_outb;
else
tf_outb = ide_outb;
if (cmd->ftf_flags & IDE_FTFLAG_FLAGGED)
HIHI = 0xFF;
if (cmd->ftf_flags & IDE_FTFLAG_OUT_DATA) {
u16 data = (tf->hob_data << 8) | tf->data;
if (mmio)
writew(data, (void __iomem *)io_ports->data_addr);
else
outw(data, io_ports->data_addr);
}
if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
tf_outb(tf->hob_feature, io_ports->feature_addr);
if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
tf_outb(tf->hob_nsect, io_ports->nsect_addr);
if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
tf_outb(tf->hob_lbal, io_ports->lbal_addr);
if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
tf_outb(tf->hob_lbam, io_ports->lbam_addr);
if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
tf_outb(tf->hob_lbah, io_ports->lbah_addr);
if (cmd->tf_flags & IDE_TFLAG_OUT_FEATURE)
tf_outb(tf->feature, io_ports->feature_addr);
if (cmd->tf_flags & IDE_TFLAG_OUT_NSECT)
tf_outb(tf->nsect, io_ports->nsect_addr);
if (cmd->tf_flags & IDE_TFLAG_OUT_LBAL)
tf_outb(tf->lbal, io_ports->lbal_addr);
if (cmd->tf_flags & IDE_TFLAG_OUT_LBAM)
tf_outb(tf->lbam, io_ports->lbam_addr);
if (cmd->tf_flags & IDE_TFLAG_OUT_LBAH)
tf_outb(tf->lbah, io_ports->lbah_addr);
if (cmd->tf_flags & IDE_TFLAG_OUT_DEVICE)
tf_outb((tf->device & HIHI) | drive->select,
io_ports->device_addr);
}
EXPORT_SYMBOL_GPL(ide_tf_load);
void ide_tf_read(ide_drive_t *drive, struct ide_cmd *cmd)
{
ide_hwif_t *hwif = drive->hwif;
struct ide_io_ports *io_ports = &hwif->io_ports;
struct ide_taskfile *tf = &cmd->tf;
void (*tf_outb)(u8 addr, unsigned long port);
u8 (*tf_inb)(unsigned long port);
u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
if (mmio) {
tf_outb = ide_mm_outb;
tf_inb = ide_mm_inb;
} else {
tf_outb = ide_outb;
tf_inb = ide_inb;
}
if (cmd->ftf_flags & IDE_FTFLAG_IN_DATA) {
u16 data;
if (mmio)
data = readw((void __iomem *)io_ports->data_addr);
else
data = inw(io_ports->data_addr);
tf->data = data & 0xff;
tf->hob_data = (data >> 8) & 0xff;
}
/* be sure we're looking at the low order bits */
tf_outb(ATA_DEVCTL_OBS, io_ports->ctl_addr);
if (cmd->tf_flags & IDE_TFLAG_IN_ERROR)
tf->error = tf_inb(io_ports->feature_addr);
if (cmd->tf_flags & IDE_TFLAG_IN_NSECT)
tf->nsect = tf_inb(io_ports->nsect_addr);
if (cmd->tf_flags & IDE_TFLAG_IN_LBAL)
tf->lbal = tf_inb(io_ports->lbal_addr);
if (cmd->tf_flags & IDE_TFLAG_IN_LBAM)
tf->lbam = tf_inb(io_ports->lbam_addr);
if (cmd->tf_flags & IDE_TFLAG_IN_LBAH)
tf->lbah = tf_inb(io_ports->lbah_addr);
if (cmd->tf_flags & IDE_TFLAG_IN_DEVICE)
tf->device = tf_inb(io_ports->device_addr);
if (cmd->tf_flags & IDE_TFLAG_LBA48) {
tf_outb(ATA_HOB | ATA_DEVCTL_OBS, io_ports->ctl_addr);
if (cmd->tf_flags & IDE_TFLAG_IN_HOB_ERROR)
tf->hob_error = tf_inb(io_ports->feature_addr);
if (cmd->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
tf->hob_nsect = tf_inb(io_ports->nsect_addr);
if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
tf->hob_lbal = tf_inb(io_ports->lbal_addr);
if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
tf->hob_lbam = tf_inb(io_ports->lbam_addr);
if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
tf->hob_lbah = tf_inb(io_ports->lbah_addr);
}
}
EXPORT_SYMBOL_GPL(ide_tf_read);
/*
* Some localbus EIDE interfaces require a special access sequence
* when using 32-bit I/O instructions to transfer data. We call this
* the "vlb_sync" sequence, which consists of three successive reads
* of the sector count register location, with interrupts disabled
* to ensure that the reads all happen together.
*/
static void ata_vlb_sync(unsigned long port)
{
(void)inb(port);
(void)inb(port);
(void)inb(port);
}
/*
* This is used for most PIO data transfers *from* the IDE interface
*
* These routines will round up any request for an odd number of bytes,
* so if an odd len is specified, be sure that there's at least one
* extra byte allocated for the buffer.
*/
void ide_input_data(ide_drive_t *drive, struct ide_cmd *cmd, void *buf,
unsigned int len)
{
ide_hwif_t *hwif = drive->hwif;
struct ide_io_ports *io_ports = &hwif->io_ports;
unsigned long data_addr = io_ports->data_addr;
u8 io_32bit = drive->io_32bit;
u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
len++;
if (io_32bit) {
unsigned long uninitialized_var(flags);
if ((io_32bit & 2) && !mmio) {
local_irq_save(flags);
ata_vlb_sync(io_ports->nsect_addr);
}
if (mmio)
__ide_mm_insl((void __iomem *)data_addr, buf, len / 4);
else
insl(data_addr, buf, len / 4);
if ((io_32bit & 2) && !mmio)
local_irq_restore(flags);
if ((len & 3) >= 2) {
if (mmio)
__ide_mm_insw((void __iomem *)data_addr,
(u8 *)buf + (len & ~3), 1);
else
insw(data_addr, (u8 *)buf + (len & ~3), 1);
}
} else {
if (mmio)
__ide_mm_insw((void __iomem *)data_addr, buf, len / 2);
else
insw(data_addr, buf, len / 2);
}
}
EXPORT_SYMBOL_GPL(ide_input_data);
/*
* This is used for most PIO data transfers *to* the IDE interface
*/
void ide_output_data(ide_drive_t *drive, struct ide_cmd *cmd, void *buf,
unsigned int len)
{
ide_hwif_t *hwif = drive->hwif;
struct ide_io_ports *io_ports = &hwif->io_ports;
unsigned long data_addr = io_ports->data_addr;
u8 io_32bit = drive->io_32bit;
u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
len++;
if (io_32bit) {
unsigned long uninitialized_var(flags);
if ((io_32bit & 2) && !mmio) {
local_irq_save(flags);
ata_vlb_sync(io_ports->nsect_addr);
}
if (mmio)
__ide_mm_outsl((void __iomem *)data_addr, buf, len / 4);
else
outsl(data_addr, buf, len / 4);
if ((io_32bit & 2) && !mmio)
local_irq_restore(flags);
if ((len & 3) >= 2) {
if (mmio)
__ide_mm_outsw((void __iomem *)data_addr,
(u8 *)buf + (len & ~3), 1);
else
outsw(data_addr, (u8 *)buf + (len & ~3), 1);
}
} else {
if (mmio)
__ide_mm_outsw((void __iomem *)data_addr, buf, len / 2);
else
outsw(data_addr, buf, len / 2);
}
}
EXPORT_SYMBOL_GPL(ide_output_data);
const struct ide_tp_ops default_tp_ops = {
.exec_command = ide_exec_command,
.read_status = ide_read_status,
.read_altstatus = ide_read_altstatus,
.write_devctl = ide_write_devctl,
.tf_load = ide_tf_load,
.tf_read = ide_tf_read,
.input_data = ide_input_data,
.output_data = ide_output_data,
};
|
