diff options
author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-21 14:57:23 -0400 |
---|---|---|
committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-21 14:57:23 -0400 |
commit | 2bfba3c444fe8b2ab1c38112a89d8f03b61136ca (patch) | |
tree | 17580eee63d868c9d6b97a6bc956a08f25631532 /drivers/ide/cmd64x.c | |
parent | 2515ddc6db8eb49a79f0fe5e67ff09ac7c81eab4 (diff) |
ide: remove useless subdirs from drivers/ide/
Suggested-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/cmd64x.c')
-rw-r--r-- | drivers/ide/cmd64x.c | 532 |
1 files changed, 532 insertions, 0 deletions
diff --git a/drivers/ide/cmd64x.c b/drivers/ide/cmd64x.c new file mode 100644 index 000000000000..935385c77e06 --- /dev/null +++ b/drivers/ide/cmd64x.c | |||
@@ -0,0 +1,532 @@ | |||
1 | /* | ||
2 | * cmd64x.c: Enable interrupts at initialization time on Ultra/PCI machines. | ||
3 | * Due to massive hardware bugs, UltraDMA is only supported | ||
4 | * on the 646U2 and not on the 646U. | ||
5 | * | ||
6 | * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be) | ||
7 | * Copyright (C) 1998 David S. Miller (davem@redhat.com) | ||
8 | * | ||
9 | * Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org> | ||
10 | * Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com> | ||
11 | */ | ||
12 | |||
13 | #include <linux/module.h> | ||
14 | #include <linux/types.h> | ||
15 | #include <linux/pci.h> | ||
16 | #include <linux/ide.h> | ||
17 | #include <linux/init.h> | ||
18 | |||
19 | #include <asm/io.h> | ||
20 | |||
21 | #define DRV_NAME "cmd64x" | ||
22 | |||
23 | #define CMD_DEBUG 0 | ||
24 | |||
25 | #if CMD_DEBUG | ||
26 | #define cmdprintk(x...) printk(x) | ||
27 | #else | ||
28 | #define cmdprintk(x...) | ||
29 | #endif | ||
30 | |||
31 | /* | ||
32 | * CMD64x specific registers definition. | ||
33 | */ | ||
34 | #define CFR 0x50 | ||
35 | #define CFR_INTR_CH0 0x04 | ||
36 | |||
37 | #define CMDTIM 0x52 | ||
38 | #define ARTTIM0 0x53 | ||
39 | #define DRWTIM0 0x54 | ||
40 | #define ARTTIM1 0x55 | ||
41 | #define DRWTIM1 0x56 | ||
42 | #define ARTTIM23 0x57 | ||
43 | #define ARTTIM23_DIS_RA2 0x04 | ||
44 | #define ARTTIM23_DIS_RA3 0x08 | ||
45 | #define ARTTIM23_INTR_CH1 0x10 | ||
46 | #define DRWTIM2 0x58 | ||
47 | #define BRST 0x59 | ||
48 | #define DRWTIM3 0x5b | ||
49 | |||
50 | #define BMIDECR0 0x70 | ||
51 | #define MRDMODE 0x71 | ||
52 | #define MRDMODE_INTR_CH0 0x04 | ||
53 | #define MRDMODE_INTR_CH1 0x08 | ||
54 | #define UDIDETCR0 0x73 | ||
55 | #define DTPR0 0x74 | ||
56 | #define BMIDECR1 0x78 | ||
57 | #define BMIDECSR 0x79 | ||
58 | #define UDIDETCR1 0x7B | ||
59 | #define DTPR1 0x7C | ||
60 | |||
61 | static u8 quantize_timing(int timing, int quant) | ||
62 | { | ||
63 | return (timing + quant - 1) / quant; | ||
64 | } | ||
65 | |||
66 | /* | ||
67 | * This routine calculates active/recovery counts and then writes them into | ||
68 | * the chipset registers. | ||
69 | */ | ||
70 | static void program_cycle_times (ide_drive_t *drive, int cycle_time, int active_time) | ||
71 | { | ||
72 | struct pci_dev *dev = to_pci_dev(drive->hwif->dev); | ||
73 | int clock_time = 1000 / (ide_pci_clk ? ide_pci_clk : 33); | ||
74 | u8 cycle_count, active_count, recovery_count, drwtim; | ||
75 | static const u8 recovery_values[] = | ||
76 | {15, 15, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0}; | ||
77 | static const u8 drwtim_regs[4] = {DRWTIM0, DRWTIM1, DRWTIM2, DRWTIM3}; | ||
78 | |||
79 | cmdprintk("program_cycle_times parameters: total=%d, active=%d\n", | ||
80 | cycle_time, active_time); | ||
81 | |||
82 | cycle_count = quantize_timing( cycle_time, clock_time); | ||
83 | active_count = quantize_timing(active_time, clock_time); | ||
84 | recovery_count = cycle_count - active_count; | ||
85 | |||
86 | /* | ||
87 | * In case we've got too long recovery phase, try to lengthen | ||
88 | * the active phase | ||
89 | */ | ||
90 | if (recovery_count > 16) { | ||
91 | active_count += recovery_count - 16; | ||
92 | recovery_count = 16; | ||
93 | } | ||
94 | if (active_count > 16) /* shouldn't actually happen... */ | ||
95 | active_count = 16; | ||
96 | |||
97 | cmdprintk("Final counts: total=%d, active=%d, recovery=%d\n", | ||
98 | cycle_count, active_count, recovery_count); | ||
99 | |||
100 | /* | ||
101 | * Convert values to internal chipset representation | ||
102 | */ | ||
103 | recovery_count = recovery_values[recovery_count]; | ||
104 | active_count &= 0x0f; | ||
105 | |||
106 | /* Program the active/recovery counts into the DRWTIM register */ | ||
107 | drwtim = (active_count << 4) | recovery_count; | ||
108 | (void) pci_write_config_byte(dev, drwtim_regs[drive->dn], drwtim); | ||
109 | cmdprintk("Write 0x%02x to reg 0x%x\n", drwtim, drwtim_regs[drive->dn]); | ||
110 | } | ||
111 | |||
112 | /* | ||
113 | * This routine writes into the chipset registers | ||
114 | * PIO setup/active/recovery timings. | ||
115 | */ | ||
116 | static void cmd64x_tune_pio(ide_drive_t *drive, const u8 pio) | ||
117 | { | ||
118 | ide_hwif_t *hwif = HWIF(drive); | ||
119 | struct pci_dev *dev = to_pci_dev(hwif->dev); | ||
120 | struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio); | ||
121 | unsigned int cycle_time; | ||
122 | u8 setup_count, arttim = 0; | ||
123 | |||
124 | static const u8 setup_values[] = {0x40, 0x40, 0x40, 0x80, 0, 0xc0}; | ||
125 | static const u8 arttim_regs[4] = {ARTTIM0, ARTTIM1, ARTTIM23, ARTTIM23}; | ||
126 | |||
127 | cycle_time = ide_pio_cycle_time(drive, pio); | ||
128 | |||
129 | program_cycle_times(drive, cycle_time, t->active); | ||
130 | |||
131 | setup_count = quantize_timing(t->setup, | ||
132 | 1000 / (ide_pci_clk ? ide_pci_clk : 33)); | ||
133 | |||
134 | /* | ||
135 | * The primary channel has individual address setup timing registers | ||
136 | * for each drive and the hardware selects the slowest timing itself. | ||
137 | * The secondary channel has one common register and we have to select | ||
138 | * the slowest address setup timing ourselves. | ||
139 | */ | ||
140 | if (hwif->channel) { | ||
141 | ide_drive_t *drives = hwif->drives; | ||
142 | |||
143 | drive->drive_data = setup_count; | ||
144 | setup_count = max(drives[0].drive_data, drives[1].drive_data); | ||
145 | } | ||
146 | |||
147 | if (setup_count > 5) /* shouldn't actually happen... */ | ||
148 | setup_count = 5; | ||
149 | cmdprintk("Final address setup count: %d\n", setup_count); | ||
150 | |||
151 | /* | ||
152 | * Program the address setup clocks into the ARTTIM registers. | ||
153 | * Avoid clearing the secondary channel's interrupt bit. | ||
154 | */ | ||
155 | (void) pci_read_config_byte (dev, arttim_regs[drive->dn], &arttim); | ||
156 | if (hwif->channel) | ||
157 | arttim &= ~ARTTIM23_INTR_CH1; | ||
158 | arttim &= ~0xc0; | ||
159 | arttim |= setup_values[setup_count]; | ||
160 | (void) pci_write_config_byte(dev, arttim_regs[drive->dn], arttim); | ||
161 | cmdprintk("Write 0x%02x to reg 0x%x\n", arttim, arttim_regs[drive->dn]); | ||
162 | } | ||
163 | |||
164 | /* | ||
165 | * Attempts to set drive's PIO mode. | ||
166 | * Special cases are 8: prefetch off, 9: prefetch on (both never worked) | ||
167 | */ | ||
168 | |||
169 | static void cmd64x_set_pio_mode(ide_drive_t *drive, const u8 pio) | ||
170 | { | ||
171 | /* | ||
172 | * Filter out the prefetch control values | ||
173 | * to prevent PIO5 from being programmed | ||
174 | */ | ||
175 | if (pio == 8 || pio == 9) | ||
176 | return; | ||
177 | |||
178 | cmd64x_tune_pio(drive, pio); | ||
179 | } | ||
180 | |||
181 | static void cmd64x_set_dma_mode(ide_drive_t *drive, const u8 speed) | ||
182 | { | ||
183 | ide_hwif_t *hwif = HWIF(drive); | ||
184 | struct pci_dev *dev = to_pci_dev(hwif->dev); | ||
185 | u8 unit = drive->dn & 0x01; | ||
186 | u8 regU = 0, pciU = hwif->channel ? UDIDETCR1 : UDIDETCR0; | ||
187 | |||
188 | if (speed >= XFER_SW_DMA_0) { | ||
189 | (void) pci_read_config_byte(dev, pciU, ®U); | ||
190 | regU &= ~(unit ? 0xCA : 0x35); | ||
191 | } | ||
192 | |||
193 | switch(speed) { | ||
194 | case XFER_UDMA_5: | ||
195 | regU |= unit ? 0x0A : 0x05; | ||
196 | break; | ||
197 | case XFER_UDMA_4: | ||
198 | regU |= unit ? 0x4A : 0x15; | ||
199 | break; | ||
200 | case XFER_UDMA_3: | ||
201 | regU |= unit ? 0x8A : 0x25; | ||
202 | break; | ||
203 | case XFER_UDMA_2: | ||
204 | regU |= unit ? 0x42 : 0x11; | ||
205 | break; | ||
206 | case XFER_UDMA_1: | ||
207 | regU |= unit ? 0x82 : 0x21; | ||
208 | break; | ||
209 | case XFER_UDMA_0: | ||
210 | regU |= unit ? 0xC2 : 0x31; | ||
211 | break; | ||
212 | case XFER_MW_DMA_2: | ||
213 | program_cycle_times(drive, 120, 70); | ||
214 | break; | ||
215 | case XFER_MW_DMA_1: | ||
216 | program_cycle_times(drive, 150, 80); | ||
217 | break; | ||
218 | case XFER_MW_DMA_0: | ||
219 | program_cycle_times(drive, 480, 215); | ||
220 | break; | ||
221 | } | ||
222 | |||
223 | if (speed >= XFER_SW_DMA_0) | ||
224 | (void) pci_write_config_byte(dev, pciU, regU); | ||
225 | } | ||
226 | |||
227 | static int cmd648_dma_end(ide_drive_t *drive) | ||
228 | { | ||
229 | ide_hwif_t *hwif = HWIF(drive); | ||
230 | unsigned long base = hwif->dma_base - (hwif->channel * 8); | ||
231 | int err = ide_dma_end(drive); | ||
232 | u8 irq_mask = hwif->channel ? MRDMODE_INTR_CH1 : | ||
233 | MRDMODE_INTR_CH0; | ||
234 | u8 mrdmode = inb(base + 1); | ||
235 | |||
236 | /* clear the interrupt bit */ | ||
237 | outb((mrdmode & ~(MRDMODE_INTR_CH0 | MRDMODE_INTR_CH1)) | irq_mask, | ||
238 | base + 1); | ||
239 | |||
240 | return err; | ||
241 | } | ||
242 | |||
243 | static int cmd64x_dma_end(ide_drive_t *drive) | ||
244 | { | ||
245 | ide_hwif_t *hwif = HWIF(drive); | ||
246 | struct pci_dev *dev = to_pci_dev(hwif->dev); | ||
247 | int irq_reg = hwif->channel ? ARTTIM23 : CFR; | ||
248 | u8 irq_mask = hwif->channel ? ARTTIM23_INTR_CH1 : | ||
249 | CFR_INTR_CH0; | ||
250 | u8 irq_stat = 0; | ||
251 | int err = ide_dma_end(drive); | ||
252 | |||
253 | (void) pci_read_config_byte(dev, irq_reg, &irq_stat); | ||
254 | /* clear the interrupt bit */ | ||
255 | (void) pci_write_config_byte(dev, irq_reg, irq_stat | irq_mask); | ||
256 | |||
257 | return err; | ||
258 | } | ||
259 | |||
260 | static int cmd648_dma_test_irq(ide_drive_t *drive) | ||
261 | { | ||
262 | ide_hwif_t *hwif = HWIF(drive); | ||
263 | unsigned long base = hwif->dma_base - (hwif->channel * 8); | ||
264 | u8 irq_mask = hwif->channel ? MRDMODE_INTR_CH1 : | ||
265 | MRDMODE_INTR_CH0; | ||
266 | u8 dma_stat = inb(hwif->dma_base + ATA_DMA_STATUS); | ||
267 | u8 mrdmode = inb(base + 1); | ||
268 | |||
269 | #ifdef DEBUG | ||
270 | printk("%s: dma_stat: 0x%02x mrdmode: 0x%02x irq_mask: 0x%02x\n", | ||
271 | drive->name, dma_stat, mrdmode, irq_mask); | ||
272 | #endif | ||
273 | if (!(mrdmode & irq_mask)) | ||
274 | return 0; | ||
275 | |||
276 | /* return 1 if INTR asserted */ | ||
277 | if (dma_stat & 4) | ||
278 | return 1; | ||
279 | |||
280 | return 0; | ||
281 | } | ||
282 | |||
283 | static int cmd64x_dma_test_irq(ide_drive_t *drive) | ||
284 | { | ||
285 | ide_hwif_t *hwif = HWIF(drive); | ||
286 | struct pci_dev *dev = to_pci_dev(hwif->dev); | ||
287 | int irq_reg = hwif->channel ? ARTTIM23 : CFR; | ||
288 | u8 irq_mask = hwif->channel ? ARTTIM23_INTR_CH1 : | ||
289 | CFR_INTR_CH0; | ||
290 | u8 dma_stat = inb(hwif->dma_base + ATA_DMA_STATUS); | ||
291 | u8 irq_stat = 0; | ||
292 | |||
293 | (void) pci_read_config_byte(dev, irq_reg, &irq_stat); | ||
294 | |||
295 | #ifdef DEBUG | ||
296 | printk("%s: dma_stat: 0x%02x irq_stat: 0x%02x irq_mask: 0x%02x\n", | ||
297 | drive->name, dma_stat, irq_stat, irq_mask); | ||
298 | #endif | ||
299 | if (!(irq_stat & irq_mask)) | ||
300 | return 0; | ||
301 | |||
302 | /* return 1 if INTR asserted */ | ||
303 | if (dma_stat & 4) | ||
304 | return 1; | ||
305 | |||
306 | return 0; | ||
307 | } | ||
308 | |||
309 | /* | ||
310 | * ASUS P55T2P4D with CMD646 chipset revision 0x01 requires the old | ||
311 | * event order for DMA transfers. | ||
312 | */ | ||
313 | |||
314 | static int cmd646_1_dma_end(ide_drive_t *drive) | ||
315 | { | ||
316 | ide_hwif_t *hwif = HWIF(drive); | ||
317 | u8 dma_stat = 0, dma_cmd = 0; | ||
318 | |||
319 | drive->waiting_for_dma = 0; | ||
320 | /* get DMA status */ | ||
321 | dma_stat = inb(hwif->dma_base + ATA_DMA_STATUS); | ||
322 | /* read DMA command state */ | ||
323 | dma_cmd = inb(hwif->dma_base + ATA_DMA_CMD); | ||
324 | /* stop DMA */ | ||
325 | outb(dma_cmd & ~1, hwif->dma_base + ATA_DMA_CMD); | ||
326 | /* clear the INTR & ERROR bits */ | ||
327 | outb(dma_stat | 6, hwif->dma_base + ATA_DMA_STATUS); | ||
328 | /* and free any DMA resources */ | ||
329 | ide_destroy_dmatable(drive); | ||
330 | /* verify good DMA status */ | ||
331 | return (dma_stat & 7) != 4; | ||
332 | } | ||
333 | |||
334 | static unsigned int init_chipset_cmd64x(struct pci_dev *dev) | ||
335 | { | ||
336 | u8 mrdmode = 0; | ||
337 | |||
338 | /* Set a good latency timer and cache line size value. */ | ||
339 | (void) pci_write_config_byte(dev, PCI_LATENCY_TIMER, 64); | ||
340 | /* FIXME: pci_set_master() to ensure a good latency timer value */ | ||
341 | |||
342 | /* | ||
343 | * Enable interrupts, select MEMORY READ LINE for reads. | ||
344 | * | ||
345 | * NOTE: although not mentioned in the PCI0646U specs, | ||
346 | * bits 0-1 are write only and won't be read back as | ||
347 | * set or not -- PCI0646U2 specs clarify this point. | ||
348 | */ | ||
349 | (void) pci_read_config_byte (dev, MRDMODE, &mrdmode); | ||
350 | mrdmode &= ~0x30; | ||
351 | (void) pci_write_config_byte(dev, MRDMODE, (mrdmode | 0x02)); | ||
352 | |||
353 | return 0; | ||
354 | } | ||
355 | |||
356 | static u8 cmd64x_cable_detect(ide_hwif_t *hwif) | ||
357 | { | ||
358 | struct pci_dev *dev = to_pci_dev(hwif->dev); | ||
359 | u8 bmidecsr = 0, mask = hwif->channel ? 0x02 : 0x01; | ||
360 | |||
361 | switch (dev->device) { | ||
362 | case PCI_DEVICE_ID_CMD_648: | ||
363 | case PCI_DEVICE_ID_CMD_649: | ||
364 | pci_read_config_byte(dev, BMIDECSR, &bmidecsr); | ||
365 | return (bmidecsr & mask) ? ATA_CBL_PATA80 : ATA_CBL_PATA40; | ||
366 | default: | ||
367 | return ATA_CBL_PATA40; | ||
368 | } | ||
369 | } | ||
370 | |||
371 | static const struct ide_port_ops cmd64x_port_ops = { | ||
372 | .set_pio_mode = cmd64x_set_pio_mode, | ||
373 | .set_dma_mode = cmd64x_set_dma_mode, | ||
374 | .cable_detect = cmd64x_cable_detect, | ||
375 | }; | ||
376 | |||
377 | static const struct ide_dma_ops cmd64x_dma_ops = { | ||
378 | .dma_host_set = ide_dma_host_set, | ||
379 | .dma_setup = ide_dma_setup, | ||
380 | .dma_exec_cmd = ide_dma_exec_cmd, | ||
381 | .dma_start = ide_dma_start, | ||
382 | .dma_end = cmd64x_dma_end, | ||
383 | .dma_test_irq = cmd64x_dma_test_irq, | ||
384 | .dma_lost_irq = ide_dma_lost_irq, | ||
385 | .dma_timeout = ide_dma_timeout, | ||
386 | }; | ||
387 | |||
388 | static const struct ide_dma_ops cmd646_rev1_dma_ops = { | ||
389 | .dma_host_set = ide_dma_host_set, | ||
390 | .dma_setup = ide_dma_setup, | ||
391 | .dma_exec_cmd = ide_dma_exec_cmd, | ||
392 | .dma_start = ide_dma_start, | ||
393 | .dma_end = cmd646_1_dma_end, | ||
394 | .dma_test_irq = ide_dma_test_irq, | ||
395 | .dma_lost_irq = ide_dma_lost_irq, | ||
396 | .dma_timeout = ide_dma_timeout, | ||
397 | }; | ||
398 | |||
399 | static const struct ide_dma_ops cmd648_dma_ops = { | ||
400 | .dma_host_set = ide_dma_host_set, | ||
401 | .dma_setup = ide_dma_setup, | ||
402 | .dma_exec_cmd = ide_dma_exec_cmd, | ||
403 | .dma_start = ide_dma_start, | ||
404 | .dma_end = cmd648_dma_end, | ||
405 | .dma_test_irq = cmd648_dma_test_irq, | ||
406 | .dma_lost_irq = ide_dma_lost_irq, | ||
407 | .dma_timeout = ide_dma_timeout, | ||
408 | }; | ||
409 | |||
410 | static const struct ide_port_info cmd64x_chipsets[] __devinitdata = { | ||
411 | { /* 0: CMD643 */ | ||
412 | .name = DRV_NAME, | ||
413 | .init_chipset = init_chipset_cmd64x, | ||
414 | .enablebits = {{0x00,0x00,0x00}, {0x51,0x08,0x08}}, | ||
415 | .port_ops = &cmd64x_port_ops, | ||
416 | .dma_ops = &cmd64x_dma_ops, | ||
417 | .host_flags = IDE_HFLAG_CLEAR_SIMPLEX | | ||
418 | IDE_HFLAG_ABUSE_PREFETCH, | ||
419 | .pio_mask = ATA_PIO5, | ||
420 | .mwdma_mask = ATA_MWDMA2, | ||
421 | .udma_mask = 0x00, /* no udma */ | ||
422 | }, | ||
423 | { /* 1: CMD646 */ | ||
424 | .name = DRV_NAME, | ||
425 | .init_chipset = init_chipset_cmd64x, | ||
426 | .enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}}, | ||
427 | .chipset = ide_cmd646, | ||
428 | .port_ops = &cmd64x_port_ops, | ||
429 | .dma_ops = &cmd648_dma_ops, | ||
430 | .host_flags = IDE_HFLAG_ABUSE_PREFETCH, | ||
431 | .pio_mask = ATA_PIO5, | ||
432 | .mwdma_mask = ATA_MWDMA2, | ||
433 | .udma_mask = ATA_UDMA2, | ||
434 | }, | ||
435 | { /* 2: CMD648 */ | ||
436 | .name = DRV_NAME, | ||
437 | .init_chipset = init_chipset_cmd64x, | ||
438 | .enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}}, | ||
439 | .port_ops = &cmd64x_port_ops, | ||
440 | .dma_ops = &cmd648_dma_ops, | ||
441 | .host_flags = IDE_HFLAG_ABUSE_PREFETCH, | ||
442 | .pio_mask = ATA_PIO5, | ||
443 | .mwdma_mask = ATA_MWDMA2, | ||
444 | .udma_mask = ATA_UDMA4, | ||
445 | }, | ||
446 | { /* 3: CMD649 */ | ||
447 | .name = DRV_NAME, | ||
448 | .init_chipset = init_chipset_cmd64x, | ||
449 | .enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}}, | ||
450 | .port_ops = &cmd64x_port_ops, | ||
451 | .dma_ops = &cmd648_dma_ops, | ||
452 | .host_flags = IDE_HFLAG_ABUSE_PREFETCH, | ||
453 | .pio_mask = ATA_PIO5, | ||
454 | .mwdma_mask = ATA_MWDMA2, | ||
455 | .udma_mask = ATA_UDMA5, | ||
456 | } | ||
457 | }; | ||
458 | |||
459 | static int __devinit cmd64x_init_one(struct pci_dev *dev, const struct pci_device_id *id) | ||
460 | { | ||
461 | struct ide_port_info d; | ||
462 | u8 idx = id->driver_data; | ||
463 | |||
464 | d = cmd64x_chipsets[idx]; | ||
465 | |||
466 | if (idx == 1) { | ||
467 | /* | ||
468 | * UltraDMA only supported on PCI646U and PCI646U2, which | ||
469 | * correspond to revisions 0x03, 0x05 and 0x07 respectively. | ||
470 | * Actually, although the CMD tech support people won't | ||
471 | * tell me the details, the 0x03 revision cannot support | ||
472 | * UDMA correctly without hardware modifications, and even | ||
473 | * then it only works with Quantum disks due to some | ||
474 | * hold time assumptions in the 646U part which are fixed | ||
475 | * in the 646U2. | ||
476 | * | ||
477 | * So we only do UltraDMA on revision 0x05 and 0x07 chipsets. | ||
478 | */ | ||
479 | if (dev->revision < 5) { | ||
480 | d.udma_mask = 0x00; | ||
481 | /* | ||
482 | * The original PCI0646 didn't have the primary | ||
483 | * channel enable bit, it appeared starting with | ||
484 | * PCI0646U (i.e. revision ID 3). | ||
485 | */ | ||
486 | if (dev->revision < 3) { | ||
487 | d.enablebits[0].reg = 0; | ||
488 | if (dev->revision == 1) | ||
489 | d.dma_ops = &cmd646_rev1_dma_ops; | ||
490 | else | ||
491 | d.dma_ops = &cmd64x_dma_ops; | ||
492 | } | ||
493 | } | ||
494 | } | ||
495 | |||
496 | return ide_pci_init_one(dev, &d, NULL); | ||
497 | } | ||
498 | |||
499 | static const struct pci_device_id cmd64x_pci_tbl[] = { | ||
500 | { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_643), 0 }, | ||
501 | { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_646), 1 }, | ||
502 | { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_648), 2 }, | ||
503 | { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_649), 3 }, | ||
504 | { 0, }, | ||
505 | }; | ||
506 | MODULE_DEVICE_TABLE(pci, cmd64x_pci_tbl); | ||
507 | |||
508 | static struct pci_driver cmd64x_pci_driver = { | ||
509 | .name = "CMD64x_IDE", | ||
510 | .id_table = cmd64x_pci_tbl, | ||
511 | .probe = cmd64x_init_one, | ||
512 | .remove = ide_pci_remove, | ||
513 | .suspend = ide_pci_suspend, | ||
514 | .resume = ide_pci_resume, | ||
515 | }; | ||
516 | |||
517 | static int __init cmd64x_ide_init(void) | ||
518 | { | ||
519 | return ide_pci_register_driver(&cmd64x_pci_driver); | ||
520 | } | ||
521 | |||
522 | static void __exit cmd64x_ide_exit(void) | ||
523 | { | ||
524 | pci_unregister_driver(&cmd64x_pci_driver); | ||
525 | } | ||
526 | |||
527 | module_init(cmd64x_ide_init); | ||
528 | module_exit(cmd64x_ide_exit); | ||
529 | |||
530 | MODULE_AUTHOR("Eddie Dost, David Miller, Andre Hedrick"); | ||
531 | MODULE_DESCRIPTION("PCI driver module for CMD64x IDE"); | ||
532 | MODULE_LICENSE("GPL"); | ||