ide: add struct ide_port_ops (take 2)
[linux-2.6.git] / drivers / ide / pci / pdc202xx_old.c
1 /*
2  *  Copyright (C) 1998-2002             Andre Hedrick <andre@linux-ide.org>
3  *  Copyright (C) 2006-2007             MontaVista Software, Inc.
4  *  Copyright (C) 2007                  Bartlomiej Zolnierkiewicz
5  *
6  *  Portions Copyright (C) 1999 Promise Technology, Inc.
7  *  Author: Frank Tiernan (frankt@promise.com)
8  *  Released under terms of General Public License
9  */
10
11 #include <linux/types.h>
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/delay.h>
15 #include <linux/blkdev.h>
16 #include <linux/hdreg.h>
17 #include <linux/pci.h>
18 #include <linux/init.h>
19 #include <linux/ide.h>
20
21 #include <asm/io.h>
22
23 #define PDC202XX_DEBUG_DRIVE_INFO       0
24
25 static const char *pdc_quirk_drives[] = {
26         "QUANTUM FIREBALLlct08 08",
27         "QUANTUM FIREBALLP KA6.4",
28         "QUANTUM FIREBALLP KA9.1",
29         "QUANTUM FIREBALLP LM20.4",
30         "QUANTUM FIREBALLP KX13.6",
31         "QUANTUM FIREBALLP KX20.5",
32         "QUANTUM FIREBALLP KX27.3",
33         "QUANTUM FIREBALLP LM20.5",
34         NULL
35 };
36
37 static void pdc_old_disable_66MHz_clock(ide_hwif_t *);
38
39 static void pdc202xx_set_mode(ide_drive_t *drive, const u8 speed)
40 {
41         ide_hwif_t *hwif        = HWIF(drive);
42         struct pci_dev *dev     = to_pci_dev(hwif->dev);
43         u8 drive_pci            = 0x60 + (drive->dn << 2);
44
45         u8                      AP = 0, BP = 0, CP = 0;
46         u8                      TA = 0, TB = 0, TC = 0;
47
48 #if PDC202XX_DEBUG_DRIVE_INFO
49         u32                     drive_conf = 0;
50         pci_read_config_dword(dev, drive_pci, &drive_conf);
51 #endif
52
53         /*
54          * TODO: do this once per channel
55          */
56         if (dev->device != PCI_DEVICE_ID_PROMISE_20246)
57                 pdc_old_disable_66MHz_clock(hwif);
58
59         pci_read_config_byte(dev, drive_pci,     &AP);
60         pci_read_config_byte(dev, drive_pci + 1, &BP);
61         pci_read_config_byte(dev, drive_pci + 2, &CP);
62
63         switch(speed) {
64                 case XFER_UDMA_5:
65                 case XFER_UDMA_4:       TB = 0x20; TC = 0x01; break;
66                 case XFER_UDMA_2:       TB = 0x20; TC = 0x01; break;
67                 case XFER_UDMA_3:
68                 case XFER_UDMA_1:       TB = 0x40; TC = 0x02; break;
69                 case XFER_UDMA_0:
70                 case XFER_MW_DMA_2:     TB = 0x60; TC = 0x03; break;
71                 case XFER_MW_DMA_1:     TB = 0x60; TC = 0x04; break;
72                 case XFER_MW_DMA_0:     TB = 0xE0; TC = 0x0F; break;
73                 case XFER_PIO_4:        TA = 0x01; TB = 0x04; break;
74                 case XFER_PIO_3:        TA = 0x02; TB = 0x06; break;
75                 case XFER_PIO_2:        TA = 0x03; TB = 0x08; break;
76                 case XFER_PIO_1:        TA = 0x05; TB = 0x0C; break;
77                 case XFER_PIO_0:
78                 default:                TA = 0x09; TB = 0x13; break;
79         }
80
81         if (speed < XFER_SW_DMA_0) {
82                 /*
83                  * preserve SYNC_INT / ERDDY_EN bits while clearing
84                  * Prefetch_EN / IORDY_EN / PA[3:0] bits of register A
85                  */
86                 AP &= ~0x3f;
87                 if (drive->id->capability & 4)
88                         AP |= 0x20;     /* set IORDY_EN bit */
89                 if (drive->media == ide_disk)
90                         AP |= 0x10;     /* set Prefetch_EN bit */
91                 /* clear PB[4:0] bits of register B */
92                 BP &= ~0x1f;
93                 pci_write_config_byte(dev, drive_pci,     AP | TA);
94                 pci_write_config_byte(dev, drive_pci + 1, BP | TB);
95         } else {
96                 /* clear MB[2:0] bits of register B */
97                 BP &= ~0xe0;
98                 /* clear MC[3:0] bits of register C */
99                 CP &= ~0x0f;
100                 pci_write_config_byte(dev, drive_pci + 1, BP | TB);
101                 pci_write_config_byte(dev, drive_pci + 2, CP | TC);
102         }
103
104 #if PDC202XX_DEBUG_DRIVE_INFO
105         printk(KERN_DEBUG "%s: %s drive%d 0x%08x ",
106                 drive->name, ide_xfer_verbose(speed),
107                 drive->dn, drive_conf);
108         pci_read_config_dword(dev, drive_pci, &drive_conf);
109         printk("0x%08x\n", drive_conf);
110 #endif
111 }
112
113 static void pdc202xx_set_pio_mode(ide_drive_t *drive, const u8 pio)
114 {
115         pdc202xx_set_mode(drive, XFER_PIO_0 + pio);
116 }
117
118 static u8 __devinit pdc2026x_cable_detect(ide_hwif_t *hwif)
119 {
120         struct pci_dev *dev = to_pci_dev(hwif->dev);
121         u16 CIS, mask = hwif->channel ? (1 << 11) : (1 << 10);
122
123         pci_read_config_word(dev, 0x50, &CIS);
124
125         return (CIS & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
126 }
127
128 /*
129  * Set the control register to use the 66MHz system
130  * clock for UDMA 3/4/5 mode operation when necessary.
131  *
132  * FIXME: this register is shared by both channels, some locking is needed
133  *
134  * It may also be possible to leave the 66MHz clock on
135  * and readjust the timing parameters.
136  */
137 static void pdc_old_enable_66MHz_clock(ide_hwif_t *hwif)
138 {
139         unsigned long clock_reg = hwif->extra_base + 0x01;
140         u8 clock = inb(clock_reg);
141
142         outb(clock | (hwif->channel ? 0x08 : 0x02), clock_reg);
143 }
144
145 static void pdc_old_disable_66MHz_clock(ide_hwif_t *hwif)
146 {
147         unsigned long clock_reg = hwif->extra_base + 0x01;
148         u8 clock = inb(clock_reg);
149
150         outb(clock & ~(hwif->channel ? 0x08 : 0x02), clock_reg);
151 }
152
153 static void pdc202xx_quirkproc(ide_drive_t *drive)
154 {
155         const char **list, *model = drive->id->model;
156
157         for (list = pdc_quirk_drives; *list != NULL; list++)
158                 if (strstr(model, *list) != NULL) {
159                         drive->quirk_list = 2;
160                         return;
161                 }
162
163         drive->quirk_list = 0;
164 }
165
166 static void pdc202xx_old_ide_dma_start(ide_drive_t *drive)
167 {
168         if (drive->current_speed > XFER_UDMA_2)
169                 pdc_old_enable_66MHz_clock(drive->hwif);
170         if (drive->media != ide_disk || drive->addressing == 1) {
171                 struct request *rq      = HWGROUP(drive)->rq;
172                 ide_hwif_t *hwif        = HWIF(drive);
173                 unsigned long high_16   = hwif->extra_base - 16;
174                 unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20);
175                 u32 word_count  = 0;
176                 u8 clock = inb(high_16 + 0x11);
177
178                 outb(clock | (hwif->channel ? 0x08 : 0x02), high_16 + 0x11);
179                 word_count = (rq->nr_sectors << 8);
180                 word_count = (rq_data_dir(rq) == READ) ?
181                                         word_count | 0x05000000 :
182                                         word_count | 0x06000000;
183                 outl(word_count, atapi_reg);
184         }
185         ide_dma_start(drive);
186 }
187
188 static int pdc202xx_old_ide_dma_end(ide_drive_t *drive)
189 {
190         if (drive->media != ide_disk || drive->addressing == 1) {
191                 ide_hwif_t *hwif        = HWIF(drive);
192                 unsigned long high_16   = hwif->extra_base - 16;
193                 unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20);
194                 u8 clock                = 0;
195
196                 outl(0, atapi_reg); /* zero out extra */
197                 clock = inb(high_16 + 0x11);
198                 outb(clock & ~(hwif->channel ? 0x08:0x02), high_16 + 0x11);
199         }
200         if (drive->current_speed > XFER_UDMA_2)
201                 pdc_old_disable_66MHz_clock(drive->hwif);
202         return __ide_dma_end(drive);
203 }
204
205 static int pdc202xx_old_ide_dma_test_irq(ide_drive_t *drive)
206 {
207         ide_hwif_t *hwif        = HWIF(drive);
208         unsigned long high_16   = hwif->extra_base - 16;
209         u8 dma_stat             = inb(hwif->dma_status);
210         u8 sc1d                 = inb(high_16 + 0x001d);
211
212         if (hwif->channel) {
213                 /* bit7: Error, bit6: Interrupting, bit5: FIFO Full, bit4: FIFO Empty */
214                 if ((sc1d & 0x50) == 0x50)
215                         goto somebody_else;
216                 else if ((sc1d & 0x40) == 0x40)
217                         return (dma_stat & 4) == 4;
218         } else {
219                 /* bit3: Error, bit2: Interrupting, bit1: FIFO Full, bit0: FIFO Empty */
220                 if ((sc1d & 0x05) == 0x05)
221                         goto somebody_else;
222                 else if ((sc1d & 0x04) == 0x04)
223                         return (dma_stat & 4) == 4;
224         }
225 somebody_else:
226         return (dma_stat & 4) == 4;     /* return 1 if INTR asserted */
227 }
228
229 static void pdc202xx_reset_host (ide_hwif_t *hwif)
230 {
231         unsigned long high_16   = hwif->extra_base - 16;
232         u8 udma_speed_flag      = inb(high_16 | 0x001f);
233
234         outb(udma_speed_flag | 0x10, high_16 | 0x001f);
235         mdelay(100);
236         outb(udma_speed_flag & ~0x10, high_16 | 0x001f);
237         mdelay(2000);   /* 2 seconds ?! */
238
239         printk(KERN_WARNING "PDC202XX: %s channel reset.\n",
240                 hwif->channel ? "Secondary" : "Primary");
241 }
242
243 static void pdc202xx_reset (ide_drive_t *drive)
244 {
245         ide_hwif_t *hwif        = HWIF(drive);
246         ide_hwif_t *mate        = hwif->mate;
247
248         pdc202xx_reset_host(hwif);
249         pdc202xx_reset_host(mate);
250
251         ide_set_max_pio(drive);
252 }
253
254 static void pdc202xx_dma_lost_irq(ide_drive_t *drive)
255 {
256         pdc202xx_reset(drive);
257         ide_dma_lost_irq(drive);
258 }
259
260 static void pdc202xx_dma_timeout(ide_drive_t *drive)
261 {
262         pdc202xx_reset(drive);
263         ide_dma_timeout(drive);
264 }
265
266 static unsigned int __devinit init_chipset_pdc202xx(struct pci_dev *dev,
267                                                         const char *name)
268 {
269         return dev->irq;
270 }
271
272 static void __devinit init_hwif_pdc202xx(ide_hwif_t *hwif)
273 {
274         struct pci_dev *dev = to_pci_dev(hwif->dev);
275
276         if (hwif->dma_base == 0)
277                 return;
278
279         hwif->dma_lost_irq = &pdc202xx_dma_lost_irq;
280         hwif->dma_timeout = &pdc202xx_dma_timeout;
281
282         if (dev->device != PCI_DEVICE_ID_PROMISE_20246) {
283                 hwif->dma_start = &pdc202xx_old_ide_dma_start;
284                 hwif->ide_dma_end = &pdc202xx_old_ide_dma_end;
285         } 
286         hwif->ide_dma_test_irq = &pdc202xx_old_ide_dma_test_irq;
287 }
288
289 static void __devinit init_dma_pdc202xx(ide_hwif_t *hwif, unsigned long dmabase)
290 {
291         u8 udma_speed_flag = 0, primary_mode = 0, secondary_mode = 0;
292
293         if (hwif->channel) {
294                 ide_setup_dma(hwif, dmabase);
295                 return;
296         }
297
298         udma_speed_flag = inb(dmabase | 0x1f);
299         primary_mode    = inb(dmabase | 0x1a);
300         secondary_mode  = inb(dmabase | 0x1b);
301         printk(KERN_INFO "%s: (U)DMA Burst Bit %sABLED " \
302                 "Primary %s Mode " \
303                 "Secondary %s Mode.\n", hwif->cds->name,
304                 (udma_speed_flag & 1) ? "EN" : "DIS",
305                 (primary_mode & 1) ? "MASTER" : "PCI",
306                 (secondary_mode & 1) ? "MASTER" : "PCI" );
307
308         if (!(udma_speed_flag & 1)) {
309                 printk(KERN_INFO "%s: FORCING BURST BIT 0x%02x->0x%02x ",
310                         hwif->cds->name, udma_speed_flag,
311                         (udma_speed_flag|1));
312                 outb(udma_speed_flag | 1, dmabase | 0x1f);
313                 printk("%sACTIVE\n", (inb(dmabase | 0x1f) & 1) ? "" : "IN");
314         }
315
316         ide_setup_dma(hwif, dmabase);
317 }
318
319 static void __devinit pdc202ata4_fixup_irq(struct pci_dev *dev,
320                                            const char *name)
321 {
322         if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE) {
323                 u8 irq = 0, irq2 = 0;
324                 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
325                 /* 0xbc */
326                 pci_read_config_byte(dev, (PCI_INTERRUPT_LINE)|0x80, &irq2);
327                 if (irq != irq2) {
328                         pci_write_config_byte(dev,
329                                 (PCI_INTERRUPT_LINE)|0x80, irq);     /* 0xbc */
330                         printk(KERN_INFO "%s: PCI config space interrupt "
331                                          "mirror fixed\n", name);
332                 }
333         }
334 }
335
336 #define IDE_HFLAGS_PDC202XX \
337         (IDE_HFLAG_ERROR_STOPS_FIFO | \
338          IDE_HFLAG_ABUSE_SET_DMA_MODE | \
339          IDE_HFLAG_OFF_BOARD)
340
341 static const struct ide_port_ops pdc20246_port_ops = {
342         .set_pio_mode           = pdc202xx_set_pio_mode,
343         .set_dma_mode           = pdc202xx_set_mode,
344         .quirkproc              = pdc202xx_quirkproc,
345 };
346
347 static const struct ide_port_ops pdc2026x_port_ops = {
348         .set_pio_mode           = pdc202xx_set_pio_mode,
349         .set_dma_mode           = pdc202xx_set_mode,
350         .quirkproc              = pdc202xx_quirkproc,
351         .resetproc              = pdc202xx_reset,
352         .cable_detect           = pdc2026x_cable_detect,
353 };
354
355 #define DECLARE_PDC2026X_DEV(name_str, udma, extra_flags) \
356         { \
357                 .name           = name_str, \
358                 .init_chipset   = init_chipset_pdc202xx, \
359                 .init_hwif      = init_hwif_pdc202xx, \
360                 .init_dma       = init_dma_pdc202xx, \
361                 .extra          = 48, \
362                 .port_ops       = &pdc2026x_port_ops, \
363                 .host_flags     = IDE_HFLAGS_PDC202XX | extra_flags, \
364                 .pio_mask       = ATA_PIO4, \
365                 .mwdma_mask     = ATA_MWDMA2, \
366                 .udma_mask      = udma, \
367         }
368
369 static const struct ide_port_info pdc202xx_chipsets[] __devinitdata = {
370         {       /* 0 */
371                 .name           = "PDC20246",
372                 .init_chipset   = init_chipset_pdc202xx,
373                 .init_hwif      = init_hwif_pdc202xx,
374                 .init_dma       = init_dma_pdc202xx,
375                 .port_ops       = &pdc20246_port_ops,
376                 .extra          = 16,
377                 .host_flags     = IDE_HFLAGS_PDC202XX,
378                 .pio_mask       = ATA_PIO4,
379                 .mwdma_mask     = ATA_MWDMA2,
380                 .udma_mask      = ATA_UDMA2,
381         },
382
383         /* 1 */ DECLARE_PDC2026X_DEV("PDC20262", ATA_UDMA4, 0),
384         /* 2 */ DECLARE_PDC2026X_DEV("PDC20263", ATA_UDMA4, 0),
385         /* 3 */ DECLARE_PDC2026X_DEV("PDC20265", ATA_UDMA5, IDE_HFLAG_RQSIZE_256),
386         /* 4 */ DECLARE_PDC2026X_DEV("PDC20267", ATA_UDMA5, IDE_HFLAG_RQSIZE_256),
387 };
388
389 /**
390  *      pdc202xx_init_one       -       called when a PDC202xx is found
391  *      @dev: the pdc202xx device
392  *      @id: the matching pci id
393  *
394  *      Called when the PCI registration layer (or the IDE initialization)
395  *      finds a device matching our IDE device tables.
396  */
397  
398 static int __devinit pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id)
399 {
400         const struct ide_port_info *d;
401         u8 idx = id->driver_data;
402
403         d = &pdc202xx_chipsets[idx];
404
405         if (idx < 3)
406                 pdc202ata4_fixup_irq(dev, d->name);
407
408         if (idx == 3) {
409                 struct pci_dev *bridge = dev->bus->self;
410
411                 if (bridge &&
412                     bridge->vendor == PCI_VENDOR_ID_INTEL &&
413                     (bridge->device == PCI_DEVICE_ID_INTEL_I960 ||
414                      bridge->device == PCI_DEVICE_ID_INTEL_I960RM)) {
415                         printk(KERN_INFO "ide: Skipping Promise PDC20265 "
416                                 "attached to I2O RAID controller\n");
417                         return -ENODEV;
418                 }
419         }
420
421         return ide_setup_pci_device(dev, d);
422 }
423
424 static const struct pci_device_id pdc202xx_pci_tbl[] = {
425         { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20246), 0 },
426         { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20262), 1 },
427         { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20263), 2 },
428         { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20265), 3 },
429         { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20267), 4 },
430         { 0, },
431 };
432 MODULE_DEVICE_TABLE(pci, pdc202xx_pci_tbl);
433
434 static struct pci_driver driver = {
435         .name           = "Promise_Old_IDE",
436         .id_table       = pdc202xx_pci_tbl,
437         .probe          = pdc202xx_init_one,
438 };
439
440 static int __init pdc202xx_ide_init(void)
441 {
442         return ide_pci_register_driver(&driver);
443 }
444
445 module_init(pdc202xx_ide_init);
446
447 MODULE_AUTHOR("Andre Hedrick, Frank Tiernan");
448 MODULE_DESCRIPTION("PCI driver module for older Promise IDE");
449 MODULE_LICENSE("GPL");