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ide: convert ide_hwif_t.mmio into flag (v2)
[karo-tx-linux.git] / drivers / ide / ppc / scc_pata.c
1 /*
2  * Support for IDE interfaces on Celleb platform
3  *
4  * (C) Copyright 2006 TOSHIBA CORPORATION
5  *
6  * This code is based on drivers/ide/pci/siimage.c:
7  * Copyright (C) 2001-2002      Andre Hedrick <andre@linux-ide.org>
8  * Copyright (C) 2003           Red Hat <alan@redhat.com>
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License along
21  * with this program; if not, write to the Free Software Foundation, Inc.,
22  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
23  */
24
25 #include <linux/types.h>
26 #include <linux/module.h>
27 #include <linux/pci.h>
28 #include <linux/delay.h>
29 #include <linux/hdreg.h>
30 #include <linux/ide.h>
31 #include <linux/init.h>
32
33 #define PCI_DEVICE_ID_TOSHIBA_SCC_ATA            0x01b4
34
35 #define SCC_PATA_NAME           "scc IDE"
36
37 #define TDVHSEL_MASTER          0x00000001
38 #define TDVHSEL_SLAVE           0x00000004
39
40 #define MODE_JCUSFEN            0x00000080
41
42 #define CCKCTRL_ATARESET        0x00040000
43 #define CCKCTRL_BUFCNT          0x00020000
44 #define CCKCTRL_CRST            0x00010000
45 #define CCKCTRL_OCLKEN          0x00000100
46 #define CCKCTRL_ATACLKOEN       0x00000002
47 #define CCKCTRL_LCLKEN          0x00000001
48
49 #define QCHCD_IOS_SS            0x00000001
50
51 #define QCHSD_STPDIAG           0x00020000
52
53 #define INTMASK_MSK             0xD1000012
54 #define INTSTS_SERROR           0x80000000
55 #define INTSTS_PRERR            0x40000000
56 #define INTSTS_RERR             0x10000000
57 #define INTSTS_ICERR            0x01000000
58 #define INTSTS_BMSINT           0x00000010
59 #define INTSTS_BMHE             0x00000008
60 #define INTSTS_IOIRQS           0x00000004
61 #define INTSTS_INTRQ            0x00000002
62 #define INTSTS_ACTEINT          0x00000001
63
64 #define ECMODE_VALUE 0x01
65
66 static struct scc_ports {
67         unsigned long ctl, dma;
68         unsigned char hwif_id;  /* for removing hwif from system */
69 } scc_ports[MAX_HWIFS];
70
71 /* PIO transfer mode  table */
72 /* JCHST */
73 static unsigned long JCHSTtbl[2][7] = {
74         {0x0E, 0x05, 0x02, 0x03, 0x02, 0x00, 0x00},   /* 100MHz */
75         {0x13, 0x07, 0x04, 0x04, 0x03, 0x00, 0x00}    /* 133MHz */
76 };
77
78 /* JCHHT */
79 static unsigned long JCHHTtbl[2][7] = {
80         {0x0E, 0x02, 0x02, 0x02, 0x02, 0x00, 0x00},   /* 100MHz */
81         {0x13, 0x03, 0x03, 0x03, 0x03, 0x00, 0x00}    /* 133MHz */
82 };
83
84 /* JCHCT */
85 static unsigned long JCHCTtbl[2][7] = {
86         {0x1D, 0x1D, 0x1C, 0x0B, 0x06, 0x00, 0x00},   /* 100MHz */
87         {0x27, 0x26, 0x26, 0x0E, 0x09, 0x00, 0x00}    /* 133MHz */
88 };
89
90
91 /* DMA transfer mode  table */
92 /* JCHDCTM/JCHDCTS */
93 static unsigned long JCHDCTxtbl[2][7] = {
94         {0x0A, 0x06, 0x04, 0x03, 0x01, 0x00, 0x00},   /* 100MHz */
95         {0x0E, 0x09, 0x06, 0x04, 0x02, 0x01, 0x00}    /* 133MHz */
96 };
97
98 /* JCSTWTM/JCSTWTS  */
99 static unsigned long JCSTWTxtbl[2][7] = {
100         {0x06, 0x04, 0x03, 0x02, 0x02, 0x02, 0x00},   /* 100MHz */
101         {0x09, 0x06, 0x04, 0x02, 0x02, 0x02, 0x02}    /* 133MHz */
102 };
103
104 /* JCTSS */
105 static unsigned long JCTSStbl[2][7] = {
106         {0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x00},   /* 100MHz */
107         {0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05}    /* 133MHz */
108 };
109
110 /* JCENVT */
111 static unsigned long JCENVTtbl[2][7] = {
112         {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00},   /* 100MHz */
113         {0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02}    /* 133MHz */
114 };
115
116 /* JCACTSELS/JCACTSELM */
117 static unsigned long JCACTSELtbl[2][7] = {
118         {0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00},   /* 100MHz */
119         {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}    /* 133MHz */
120 };
121
122
123 static u8 scc_ide_inb(unsigned long port)
124 {
125         u32 data = in_be32((void*)port);
126         return (u8)data;
127 }
128
129 static u16 scc_ide_inw(unsigned long port)
130 {
131         u32 data = in_be32((void*)port);
132         return (u16)data;
133 }
134
135 static void scc_ide_insw(unsigned long port, void *addr, u32 count)
136 {
137         u16 *ptr = (u16 *)addr;
138         while (count--) {
139                 *ptr++ = le16_to_cpu(in_be32((void*)port));
140         }
141 }
142
143 static void scc_ide_insl(unsigned long port, void *addr, u32 count)
144 {
145         u16 *ptr = (u16 *)addr;
146         while (count--) {
147                 *ptr++ = le16_to_cpu(in_be32((void*)port));
148                 *ptr++ = le16_to_cpu(in_be32((void*)port));
149         }
150 }
151
152 static void scc_ide_outb(u8 addr, unsigned long port)
153 {
154         out_be32((void*)port, addr);
155 }
156
157 static void scc_ide_outw(u16 addr, unsigned long port)
158 {
159         out_be32((void*)port, addr);
160 }
161
162 static void
163 scc_ide_outbsync(ide_drive_t * drive, u8 addr, unsigned long port)
164 {
165         ide_hwif_t *hwif = HWIF(drive);
166
167         out_be32((void*)port, addr);
168         __asm__ __volatile__("eieio":::"memory");
169         in_be32((void*)(hwif->dma_base + 0x01c));
170         __asm__ __volatile__("eieio":::"memory");
171 }
172
173 static void
174 scc_ide_outsw(unsigned long port, void *addr, u32 count)
175 {
176         u16 *ptr = (u16 *)addr;
177         while (count--) {
178                 out_be32((void*)port, cpu_to_le16(*ptr++));
179         }
180 }
181
182 static void
183 scc_ide_outsl(unsigned long port, void *addr, u32 count)
184 {
185         u16 *ptr = (u16 *)addr;
186         while (count--) {
187                 out_be32((void*)port, cpu_to_le16(*ptr++));
188                 out_be32((void*)port, cpu_to_le16(*ptr++));
189         }
190 }
191
192 /**
193  *      scc_ratemask    -       Compute available modes
194  *      @drive: IDE drive
195  *
196  *      Compute the available speeds for the devices on the interface.
197  *      Enforce UDMA33 as a limit if there is no 80pin cable present.
198  */
199
200 static u8 scc_ratemask(ide_drive_t *drive)
201 {
202         u8 mode = 4;
203
204         if (!eighty_ninty_three(drive))
205                 mode = min(mode, (u8)1);
206         return mode;
207 }
208
209 /**
210  *      scc_tuneproc    -       tune a drive PIO mode
211  *      @drive: drive to tune
212  *      @mode_wanted: the target operating mode
213  *
214  *      Load the timing settings for this device mode into the
215  *      controller.
216  */
217
218 static void scc_tuneproc(ide_drive_t *drive, byte mode_wanted)
219 {
220         ide_hwif_t *hwif = HWIF(drive);
221         struct scc_ports *ports = ide_get_hwifdata(hwif);
222         unsigned long ctl_base = ports->ctl;
223         unsigned long cckctrl_port = ctl_base + 0xff0;
224         unsigned long piosht_port = ctl_base + 0x000;
225         unsigned long pioct_port = ctl_base + 0x004;
226         unsigned long reg;
227         unsigned char speed = XFER_PIO_0;
228         int offset;
229
230         mode_wanted = ide_get_best_pio_mode(drive, mode_wanted, 4, NULL);
231         switch (mode_wanted) {
232         case 4:
233                 speed = XFER_PIO_4;
234                 break;
235         case 3:
236                 speed = XFER_PIO_3;
237                 break;
238         case 2:
239                 speed = XFER_PIO_2;
240                 break;
241         case 1:
242                 speed = XFER_PIO_1;
243                 break;
244         case 0:
245         default:
246                 speed = XFER_PIO_0;
247                 break;
248         }
249
250         reg = in_be32((void __iomem *)cckctrl_port);
251         if (reg & CCKCTRL_ATACLKOEN) {
252                 offset = 1; /* 133MHz */
253         } else {
254                 offset = 0; /* 100MHz */
255         }
256         reg = JCHSTtbl[offset][mode_wanted] << 16 | JCHHTtbl[offset][mode_wanted];
257         out_be32((void __iomem *)piosht_port, reg);
258         reg = JCHCTtbl[offset][mode_wanted];
259         out_be32((void __iomem *)pioct_port, reg);
260
261         ide_config_drive_speed(drive, speed);
262 }
263
264 /**
265  *      scc_tune_chipset        -       tune a drive DMA mode
266  *      @drive: Drive to set up
267  *      @xferspeed: speed we want to achieve
268  *
269  *      Load the timing settings for this device mode into the
270  *      controller.
271  */
272
273 static int scc_tune_chipset(ide_drive_t *drive, byte xferspeed)
274 {
275         ide_hwif_t *hwif = HWIF(drive);
276         u8 speed = ide_rate_filter(scc_ratemask(drive), xferspeed);
277         struct scc_ports *ports = ide_get_hwifdata(hwif);
278         unsigned long ctl_base = ports->ctl;
279         unsigned long cckctrl_port = ctl_base + 0xff0;
280         unsigned long mdmact_port = ctl_base + 0x008;
281         unsigned long mcrcst_port = ctl_base + 0x00c;
282         unsigned long sdmact_port = ctl_base + 0x010;
283         unsigned long scrcst_port = ctl_base + 0x014;
284         unsigned long udenvt_port = ctl_base + 0x018;
285         unsigned long tdvhsel_port   = ctl_base + 0x020;
286         int is_slave = (&hwif->drives[1] == drive);
287         int offset, idx;
288         unsigned long reg;
289         unsigned long jcactsel;
290
291         reg = in_be32((void __iomem *)cckctrl_port);
292         if (reg & CCKCTRL_ATACLKOEN) {
293                 offset = 1; /* 133MHz */
294         } else {
295                 offset = 0; /* 100MHz */
296         }
297
298         switch (speed) {
299         case XFER_UDMA_6:
300                 idx = 6;
301                 break;
302         case XFER_UDMA_5:
303                 idx = 5;
304                 break;
305         case XFER_UDMA_4:
306                 idx = 4;
307                 break;
308         case XFER_UDMA_3:
309                 idx = 3;
310                 break;
311         case XFER_UDMA_2:
312                 idx = 2;
313                 break;
314         case XFER_UDMA_1:
315                 idx = 1;
316                 break;
317         case XFER_UDMA_0:
318                 idx = 0;
319                 break;
320         default:
321                 return 1;
322         }
323
324         jcactsel = JCACTSELtbl[offset][idx];
325         if (is_slave) {
326                 out_be32((void __iomem *)sdmact_port, JCHDCTxtbl[offset][idx]);
327                 out_be32((void __iomem *)scrcst_port, JCSTWTxtbl[offset][idx]);
328                 jcactsel = jcactsel << 2;
329                 out_be32((void __iomem *)tdvhsel_port, (in_be32((void __iomem *)tdvhsel_port) & ~TDVHSEL_SLAVE) | jcactsel);
330         } else {
331                 out_be32((void __iomem *)mdmact_port, JCHDCTxtbl[offset][idx]);
332                 out_be32((void __iomem *)mcrcst_port, JCSTWTxtbl[offset][idx]);
333                 out_be32((void __iomem *)tdvhsel_port, (in_be32((void __iomem *)tdvhsel_port) & ~TDVHSEL_MASTER) | jcactsel);
334         }
335         reg = JCTSStbl[offset][idx] << 16 | JCENVTtbl[offset][idx];
336         out_be32((void __iomem *)udenvt_port, reg);
337
338         return ide_config_drive_speed(drive, speed);
339 }
340
341 /**
342  *      scc_config_chipset_for_dma      -       configure for DMA
343  *      @drive: drive to configure
344  *
345  *      Called by scc_config_drive_for_dma().
346  */
347
348 static int scc_config_chipset_for_dma(ide_drive_t *drive)
349 {
350         u8 speed = ide_dma_speed(drive, scc_ratemask(drive));
351
352         if (!speed)
353                 return 0;
354
355         if (scc_tune_chipset(drive, speed))
356                 return 0;
357
358         return ide_dma_enable(drive);
359 }
360
361 /**
362  *      scc_configure_drive_for_dma     -       set up for DMA transfers
363  *      @drive: drive we are going to set up
364  *
365  *      Set up the drive for DMA, tune the controller and drive as
366  *      required.
367  *      If the drive isn't suitable for DMA or we hit other problems
368  *      then we will drop down to PIO and set up PIO appropriately.
369  *      (return 1)
370  */
371
372 static int scc_config_drive_for_dma(ide_drive_t *drive)
373 {
374         ide_hwif_t *hwif = HWIF(drive);
375
376         if (ide_use_dma(drive) && scc_config_chipset_for_dma(drive))
377                 return hwif->ide_dma_on(drive);
378
379         if (ide_use_fast_pio(drive)) {
380                 hwif->tuneproc(drive, 4);
381                 hwif->ide_dma_off_quietly(drive);
382         }
383         return 1; /* DMA is not supported */
384 }
385
386 /**
387  *      scc_ide_dma_setup       -       begin a DMA phase
388  *      @drive: target device
389  *
390  *      Build an IDE DMA PRD (IDE speak for scatter gather table)
391  *      and then set up the DMA transfer registers.
392  *
393  *      Returns 0 on success. If a PIO fallback is required then 1
394  *      is returned.
395  */
396
397 static int scc_dma_setup(ide_drive_t *drive)
398 {
399         ide_hwif_t *hwif = drive->hwif;
400         struct request *rq = HWGROUP(drive)->rq;
401         unsigned int reading;
402         u8 dma_stat;
403
404         if (rq_data_dir(rq))
405                 reading = 0;
406         else
407                 reading = 1 << 3;
408
409         /* fall back to pio! */
410         if (!ide_build_dmatable(drive, rq)) {
411                 ide_map_sg(drive, rq);
412                 return 1;
413         }
414
415         /* PRD table */
416         out_be32((void __iomem *)hwif->dma_prdtable, hwif->dmatable_dma);
417
418         /* specify r/w */
419         out_be32((void __iomem *)hwif->dma_command, reading);
420
421         /* read dma_status for INTR & ERROR flags */
422         dma_stat = in_be32((void __iomem *)hwif->dma_status);
423
424         /* clear INTR & ERROR flags */
425         out_be32((void __iomem *)hwif->dma_status, dma_stat|6);
426         drive->waiting_for_dma = 1;
427         return 0;
428 }
429
430
431 /**
432  *      scc_ide_dma_end -       Stop DMA
433  *      @drive: IDE drive
434  *
435  *      Check and clear INT Status register.
436  *      Then call __ide_dma_end().
437  */
438
439 static int scc_ide_dma_end(ide_drive_t * drive)
440 {
441         ide_hwif_t *hwif = HWIF(drive);
442         unsigned long intsts_port = hwif->dma_base + 0x014;
443         u32 reg;
444
445         while (1) {
446                 reg = in_be32((void __iomem *)intsts_port);
447
448                 if (reg & INTSTS_SERROR) {
449                         printk(KERN_WARNING "%s: SERROR\n", SCC_PATA_NAME);
450                         out_be32((void __iomem *)intsts_port, INTSTS_SERROR|INTSTS_BMSINT);
451
452                         out_be32((void __iomem *)hwif->dma_command, in_be32((void __iomem *)hwif->dma_command) & ~QCHCD_IOS_SS);
453                         continue;
454                 }
455
456                 if (reg & INTSTS_PRERR) {
457                         u32 maea0, maec0;
458                         unsigned long ctl_base = hwif->config_data;
459
460                         maea0 = in_be32((void __iomem *)(ctl_base + 0xF50));
461                         maec0 = in_be32((void __iomem *)(ctl_base + 0xF54));
462
463                         printk(KERN_WARNING "%s: PRERR [addr:%x cmd:%x]\n", SCC_PATA_NAME, maea0, maec0);
464
465                         out_be32((void __iomem *)intsts_port, INTSTS_PRERR|INTSTS_BMSINT);
466
467                         out_be32((void __iomem *)hwif->dma_command, in_be32((void __iomem *)hwif->dma_command) & ~QCHCD_IOS_SS);
468                         continue;
469                 }
470
471                 if (reg & INTSTS_RERR) {
472                         printk(KERN_WARNING "%s: Response Error\n", SCC_PATA_NAME);
473                         out_be32((void __iomem *)intsts_port, INTSTS_RERR|INTSTS_BMSINT);
474
475                         out_be32((void __iomem *)hwif->dma_command, in_be32((void __iomem *)hwif->dma_command) & ~QCHCD_IOS_SS);
476                         continue;
477                 }
478
479                 if (reg & INTSTS_ICERR) {
480                         out_be32((void __iomem *)hwif->dma_command, in_be32((void __iomem *)hwif->dma_command) & ~QCHCD_IOS_SS);
481
482                         printk(KERN_WARNING "%s: Illegal Configuration\n", SCC_PATA_NAME);
483                         out_be32((void __iomem *)intsts_port, INTSTS_ICERR|INTSTS_BMSINT);
484                         continue;
485                 }
486
487                 if (reg & INTSTS_BMSINT) {
488                         printk(KERN_WARNING "%s: Internal Bus Error\n", SCC_PATA_NAME);
489                         out_be32((void __iomem *)intsts_port, INTSTS_BMSINT);
490
491                         ide_do_reset(drive);
492                         continue;
493                 }
494
495                 if (reg & INTSTS_BMHE) {
496                         out_be32((void __iomem *)intsts_port, INTSTS_BMHE);
497                         continue;
498                 }
499
500                 if (reg & INTSTS_ACTEINT) {
501                         out_be32((void __iomem *)intsts_port, INTSTS_ACTEINT);
502                         continue;
503                 }
504
505                 if (reg & INTSTS_IOIRQS) {
506                         out_be32((void __iomem *)intsts_port, INTSTS_IOIRQS);
507                         continue;
508                 }
509                 break;
510         }
511
512         return __ide_dma_end(drive);
513 }
514
515 /**
516  *      setup_mmio_scc  -       map CTRL/BMID region
517  *      @dev: PCI device we are configuring
518  *      @name: device name
519  *
520  */
521
522 static int setup_mmio_scc (struct pci_dev *dev, const char *name)
523 {
524         unsigned long ctl_base = pci_resource_start(dev, 0);
525         unsigned long dma_base = pci_resource_start(dev, 1);
526         unsigned long ctl_size = pci_resource_len(dev, 0);
527         unsigned long dma_size = pci_resource_len(dev, 1);
528         void *ctl_addr;
529         void *dma_addr;
530         int i;
531
532         for (i = 0; i < MAX_HWIFS; i++) {
533                 if (scc_ports[i].ctl == 0)
534                         break;
535         }
536         if (i >= MAX_HWIFS)
537                 return -ENOMEM;
538
539         if (!request_mem_region(ctl_base, ctl_size, name)) {
540                 printk(KERN_WARNING "%s: IDE controller MMIO ports not available.\n", SCC_PATA_NAME);
541                 goto fail_0;
542         }
543
544         if (!request_mem_region(dma_base, dma_size, name)) {
545                 printk(KERN_WARNING "%s: IDE controller MMIO ports not available.\n", SCC_PATA_NAME);
546                 goto fail_1;
547         }
548
549         if ((ctl_addr = ioremap(ctl_base, ctl_size)) == NULL)
550                 goto fail_2;
551
552         if ((dma_addr = ioremap(dma_base, dma_size)) == NULL)
553                 goto fail_3;
554
555         pci_set_master(dev);
556         scc_ports[i].ctl = (unsigned long)ctl_addr;
557         scc_ports[i].dma = (unsigned long)dma_addr;
558         pci_set_drvdata(dev, (void *) &scc_ports[i]);
559
560         return 1;
561
562  fail_3:
563         iounmap(ctl_addr);
564  fail_2:
565         release_mem_region(dma_base, dma_size);
566  fail_1:
567         release_mem_region(ctl_base, ctl_size);
568  fail_0:
569         return -ENOMEM;
570 }
571
572 /**
573  *      init_setup_scc  -       set up an SCC PATA Controller
574  *      @dev: PCI device
575  *      @d: IDE PCI device
576  *
577  *      Perform the initial set up for this device.
578  */
579
580 static int __devinit init_setup_scc(struct pci_dev *dev, ide_pci_device_t *d)
581 {
582         unsigned long ctl_base;
583         unsigned long dma_base;
584         unsigned long cckctrl_port;
585         unsigned long intmask_port;
586         unsigned long mode_port;
587         unsigned long ecmode_port;
588         unsigned long dma_status_port;
589         u32 reg = 0;
590         struct scc_ports *ports;
591         int rc;
592
593         rc = setup_mmio_scc(dev, d->name);
594         if (rc < 0) {
595                 return rc;
596         }
597
598         ports = pci_get_drvdata(dev);
599         ctl_base = ports->ctl;
600         dma_base = ports->dma;
601         cckctrl_port = ctl_base + 0xff0;
602         intmask_port = dma_base + 0x010;
603         mode_port = ctl_base + 0x024;
604         ecmode_port = ctl_base + 0xf00;
605         dma_status_port = dma_base + 0x004;
606
607         /* controller initialization */
608         reg = 0;
609         out_be32((void*)cckctrl_port, reg);
610         reg |= CCKCTRL_ATACLKOEN;
611         out_be32((void*)cckctrl_port, reg);
612         reg |= CCKCTRL_LCLKEN | CCKCTRL_OCLKEN;
613         out_be32((void*)cckctrl_port, reg);
614         reg |= CCKCTRL_CRST;
615         out_be32((void*)cckctrl_port, reg);
616
617         for (;;) {
618                 reg = in_be32((void*)cckctrl_port);
619                 if (reg & CCKCTRL_CRST)
620                         break;
621                 udelay(5000);
622         }
623
624         reg |= CCKCTRL_ATARESET;
625         out_be32((void*)cckctrl_port, reg);
626
627         out_be32((void*)ecmode_port, ECMODE_VALUE);
628         out_be32((void*)mode_port, MODE_JCUSFEN);
629         out_be32((void*)intmask_port, INTMASK_MSK);
630
631         return ide_setup_pci_device(dev, d);
632 }
633
634 /**
635  *      init_mmio_iops_scc      -       set up the iops for MMIO
636  *      @hwif: interface to set up
637  *
638  */
639
640 static void __devinit init_mmio_iops_scc(ide_hwif_t *hwif)
641 {
642         struct pci_dev *dev = hwif->pci_dev;
643         struct scc_ports *ports = pci_get_drvdata(dev);
644         unsigned long dma_base = ports->dma;
645
646         ide_set_hwifdata(hwif, ports);
647
648         hwif->INB = scc_ide_inb;
649         hwif->INW = scc_ide_inw;
650         hwif->INSW = scc_ide_insw;
651         hwif->INSL = scc_ide_insl;
652         hwif->OUTB = scc_ide_outb;
653         hwif->OUTBSYNC = scc_ide_outbsync;
654         hwif->OUTW = scc_ide_outw;
655         hwif->OUTSW = scc_ide_outsw;
656         hwif->OUTSL = scc_ide_outsl;
657
658         hwif->io_ports[IDE_DATA_OFFSET] = dma_base + 0x20;
659         hwif->io_ports[IDE_ERROR_OFFSET] = dma_base + 0x24;
660         hwif->io_ports[IDE_NSECTOR_OFFSET] = dma_base + 0x28;
661         hwif->io_ports[IDE_SECTOR_OFFSET] = dma_base + 0x2c;
662         hwif->io_ports[IDE_LCYL_OFFSET] = dma_base + 0x30;
663         hwif->io_ports[IDE_HCYL_OFFSET] = dma_base + 0x34;
664         hwif->io_ports[IDE_SELECT_OFFSET] = dma_base + 0x38;
665         hwif->io_ports[IDE_STATUS_OFFSET] = dma_base + 0x3c;
666         hwif->io_ports[IDE_CONTROL_OFFSET] = dma_base + 0x40;
667
668         hwif->irq = hwif->pci_dev->irq;
669         hwif->dma_base = dma_base;
670         hwif->config_data = ports->ctl;
671         hwif->mmio = 1;
672 }
673
674 /**
675  *      init_iops_scc   -       set up iops
676  *      @hwif: interface to set up
677  *
678  *      Do the basic setup for the SCC hardware interface
679  *      and then do the MMIO setup.
680  */
681
682 static void __devinit init_iops_scc(ide_hwif_t *hwif)
683 {
684         struct pci_dev *dev =  hwif->pci_dev;
685         hwif->hwif_data = NULL;
686         if (pci_get_drvdata(dev) == NULL)
687                 return;
688         init_mmio_iops_scc(hwif);
689 }
690
691 /**
692  *      init_hwif_scc   -       set up hwif
693  *      @hwif: interface to set up
694  *
695  *      We do the basic set up of the interface structure. The SCC
696  *      requires several custom handlers so we override the default
697  *      ide DMA handlers appropriately.
698  */
699
700 static void __devinit init_hwif_scc(ide_hwif_t *hwif)
701 {
702         struct scc_ports *ports = ide_get_hwifdata(hwif);
703
704         ports->hwif_id = hwif->index;
705
706         hwif->dma_command = hwif->dma_base;
707         hwif->dma_status = hwif->dma_base + 0x04;
708         hwif->dma_prdtable = hwif->dma_base + 0x08;
709
710         /* PTERADD */
711         out_be32((void __iomem *)(hwif->dma_base + 0x018), hwif->dmatable_dma);
712
713         hwif->dma_setup = scc_dma_setup;
714         hwif->ide_dma_end = scc_ide_dma_end;
715         hwif->speedproc = scc_tune_chipset;
716         hwif->tuneproc = scc_tuneproc;
717         hwif->ide_dma_check = scc_config_drive_for_dma;
718
719         hwif->drives[0].autotune = IDE_TUNE_AUTO;
720         hwif->drives[1].autotune = IDE_TUNE_AUTO;
721
722         if (in_be32((void __iomem *)(hwif->config_data + 0xff0)) & CCKCTRL_ATACLKOEN) {
723                 hwif->ultra_mask = 0x7f; /* 133MHz */
724         } else {
725                 hwif->ultra_mask = 0x3f; /* 100MHz */
726         }
727         hwif->mwdma_mask = 0x00;
728         hwif->swdma_mask = 0x00;
729         hwif->atapi_dma = 1;
730
731         /* we support 80c cable only. */
732         hwif->udma_four = 1;
733
734         hwif->autodma = 0;
735         if (!noautodma)
736                 hwif->autodma = 1;
737         hwif->drives[0].autodma = hwif->autodma;
738         hwif->drives[1].autodma = hwif->autodma;
739 }
740
741 #define DECLARE_SCC_DEV(name_str)                       \
742   {                                                     \
743       .name             = name_str,                     \
744       .init_setup       = init_setup_scc,               \
745       .init_iops        = init_iops_scc,                \
746       .init_hwif        = init_hwif_scc,                \
747       .channels = 1,                                    \
748       .autodma  = AUTODMA,                              \
749       .bootable = ON_BOARD,                             \
750   }
751
752 static ide_pci_device_t scc_chipsets[] __devinitdata = {
753         /* 0 */ DECLARE_SCC_DEV("sccIDE"),
754 };
755
756 /**
757  *      scc_init_one    -       pci layer discovery entry
758  *      @dev: PCI device
759  *      @id: ident table entry
760  *
761  *      Called by the PCI code when it finds an SCC PATA controller.
762  *      We then use the IDE PCI generic helper to do most of the work.
763  */
764
765 static int __devinit scc_init_one(struct pci_dev *dev, const struct pci_device_id *id)
766 {
767         ide_pci_device_t *d = &scc_chipsets[id->driver_data];
768         return d->init_setup(dev, d);
769 }
770
771 /**
772  *      scc_remove      -       pci layer remove entry
773  *      @dev: PCI device
774  *
775  *      Called by the PCI code when it removes an SCC PATA controller.
776  */
777
778 static void __devexit scc_remove(struct pci_dev *dev)
779 {
780         struct scc_ports *ports = pci_get_drvdata(dev);
781         ide_hwif_t *hwif = &ide_hwifs[ports->hwif_id];
782         unsigned long ctl_base = pci_resource_start(dev, 0);
783         unsigned long dma_base = pci_resource_start(dev, 1);
784         unsigned long ctl_size = pci_resource_len(dev, 0);
785         unsigned long dma_size = pci_resource_len(dev, 1);
786
787         if (hwif->dmatable_cpu) {
788                 pci_free_consistent(hwif->pci_dev,
789                                     PRD_ENTRIES * PRD_BYTES,
790                                     hwif->dmatable_cpu,
791                                     hwif->dmatable_dma);
792                 hwif->dmatable_cpu = NULL;
793         }
794
795         ide_unregister(hwif->index);
796
797         hwif->chipset = ide_unknown;
798         iounmap((void*)ports->dma);
799         iounmap((void*)ports->ctl);
800         release_mem_region(dma_base, dma_size);
801         release_mem_region(ctl_base, ctl_size);
802         memset(ports, 0, sizeof(*ports));
803 }
804
805 static struct pci_device_id scc_pci_tbl[] = {
806         { PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_SCC_ATA,  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
807         { 0, },
808 };
809 MODULE_DEVICE_TABLE(pci, scc_pci_tbl);
810
811 static struct pci_driver driver = {
812         .name = "SCC IDE",
813         .id_table = scc_pci_tbl,
814         .probe = scc_init_one,
815         .remove = scc_remove,
816 };
817
818 static int scc_ide_init(void)
819 {
820         return ide_pci_register_driver(&driver);
821 }
822
823 module_init(scc_ide_init);
824 /* -- No exit code?
825 static void scc_ide_exit(void)
826 {
827         ide_pci_unregister_driver(&driver);
828 }
829 module_exit(scc_ide_exit);
830  */
831
832
833 MODULE_DESCRIPTION("PCI driver module for Toshiba SCC IDE");
834 MODULE_LICENSE("GPL");