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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* $Id: floppy.h,v 1.32 2001/10/26 17:59:36 davem Exp $
2 * asm-sparc64/floppy.h: Sparc specific parts of the Floppy driver.
3 *
4 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
6 *
7 * Ultra/PCI support added: Sep 1997 Eddie C. Dost (ecd@skynet.be)
8 */
9
10#ifndef __ASM_SPARC64_FLOPPY_H
11#define __ASM_SPARC64_FLOPPY_H
12
Linus Torvalds1da177e2005-04-16 15:20:36 -070013#include <linux/init.h>
14
15#include <asm/page.h>
16#include <asm/pgtable.h>
17#include <asm/system.h>
18#include <asm/idprom.h>
19#include <asm/oplib.h>
20#include <asm/auxio.h>
21#include <asm/sbus.h>
22#include <asm/irq.h>
23
24
25/*
26 * Define this to enable exchanging drive 0 and 1 if only drive 1 is
27 * probed on PCI machines.
28 */
29#undef PCI_FDC_SWAP_DRIVES
30
31
32/* References:
33 * 1) Netbsd Sun floppy driver.
34 * 2) NCR 82077 controller manual
35 * 3) Intel 82077 controller manual
36 */
37struct sun_flpy_controller {
38 volatile unsigned char status1_82077; /* Auxiliary Status reg. 1 */
39 volatile unsigned char status2_82077; /* Auxiliary Status reg. 2 */
40 volatile unsigned char dor_82077; /* Digital Output reg. */
41 volatile unsigned char tapectl_82077; /* Tape Control reg */
42 volatile unsigned char status_82077; /* Main Status Register. */
43#define drs_82077 status_82077 /* Digital Rate Select reg. */
44 volatile unsigned char data_82077; /* Data fifo. */
45 volatile unsigned char ___unused;
46 volatile unsigned char dir_82077; /* Digital Input reg. */
47#define dcr_82077 dir_82077 /* Config Control reg. */
48};
49
50/* You'll only ever find one controller on an Ultra anyways. */
51static struct sun_flpy_controller *sun_fdc = (struct sun_flpy_controller *)-1;
52unsigned long fdc_status;
53static struct sbus_dev *floppy_sdev = NULL;
54
55struct sun_floppy_ops {
56 unsigned char (*fd_inb) (unsigned long port);
57 void (*fd_outb) (unsigned char value, unsigned long port);
58 void (*fd_enable_dma) (void);
59 void (*fd_disable_dma) (void);
60 void (*fd_set_dma_mode) (int);
61 void (*fd_set_dma_addr) (char *);
62 void (*fd_set_dma_count) (int);
63 unsigned int (*get_dma_residue) (void);
64 int (*fd_request_irq) (void);
65 void (*fd_free_irq) (void);
66 int (*fd_eject) (int);
67};
68
69static struct sun_floppy_ops sun_fdops;
70
71#define fd_inb(port) sun_fdops.fd_inb(port)
72#define fd_outb(value,port) sun_fdops.fd_outb(value,port)
73#define fd_enable_dma() sun_fdops.fd_enable_dma()
74#define fd_disable_dma() sun_fdops.fd_disable_dma()
75#define fd_request_dma() (0) /* nothing... */
76#define fd_free_dma() /* nothing... */
77#define fd_clear_dma_ff() /* nothing... */
78#define fd_set_dma_mode(mode) sun_fdops.fd_set_dma_mode(mode)
79#define fd_set_dma_addr(addr) sun_fdops.fd_set_dma_addr(addr)
80#define fd_set_dma_count(count) sun_fdops.fd_set_dma_count(count)
81#define get_dma_residue(x) sun_fdops.get_dma_residue()
82#define fd_cacheflush(addr, size) /* nothing... */
83#define fd_request_irq() sun_fdops.fd_request_irq()
84#define fd_free_irq() sun_fdops.fd_free_irq()
85#define fd_eject(drive) sun_fdops.fd_eject(drive)
86
87static int FLOPPY_MOTOR_MASK = 0x10;
88
89/* Super paranoid... */
90#undef HAVE_DISABLE_HLT
91
92static int sun_floppy_types[2] = { 0, 0 };
93
94/* Here is where we catch the floppy driver trying to initialize,
95 * therefore this is where we call the PROM device tree probing
96 * routine etc. on the Sparc.
97 */
98#define FLOPPY0_TYPE sun_floppy_init()
99#define FLOPPY1_TYPE sun_floppy_types[1]
100
101#define FDC1 ((unsigned long)sun_fdc)
102
103#define N_FDC 1
104#define N_DRIVE 8
105
106/* No 64k boundary crossing problems on the Sparc. */
107#define CROSS_64KB(a,s) (0)
108
109static unsigned char sun_82077_fd_inb(unsigned long port)
110{
111 udelay(5);
112 switch(port & 7) {
113 default:
114 printk("floppy: Asked to read unknown port %lx\n", port);
115 panic("floppy: Port bolixed.");
116 case 4: /* FD_STATUS */
117 return sbus_readb(&sun_fdc->status_82077) & ~STATUS_DMA;
118 case 5: /* FD_DATA */
119 return sbus_readb(&sun_fdc->data_82077);
120 case 7: /* FD_DIR */
121 /* XXX: Is DCL on 0x80 in sun4m? */
122 return sbus_readb(&sun_fdc->dir_82077);
123 };
124 panic("sun_82072_fd_inb: How did I get here?");
125}
126
127static void sun_82077_fd_outb(unsigned char value, unsigned long port)
128{
129 udelay(5);
130 switch(port & 7) {
131 default:
132 printk("floppy: Asked to write to unknown port %lx\n", port);
133 panic("floppy: Port bolixed.");
134 case 2: /* FD_DOR */
135 /* Happily, the 82077 has a real DOR register. */
136 sbus_writeb(value, &sun_fdc->dor_82077);
137 break;
138 case 5: /* FD_DATA */
139 sbus_writeb(value, &sun_fdc->data_82077);
140 break;
141 case 7: /* FD_DCR */
142 sbus_writeb(value, &sun_fdc->dcr_82077);
143 break;
144 case 4: /* FD_STATUS */
145 sbus_writeb(value, &sun_fdc->status_82077);
146 break;
147 };
148 return;
149}
150
151/* For pseudo-dma (Sun floppy drives have no real DMA available to
152 * them so we must eat the data fifo bytes directly ourselves) we have
153 * three state variables. doing_pdma tells our inline low-level
154 * assembly floppy interrupt entry point whether it should sit and eat
155 * bytes from the fifo or just transfer control up to the higher level
156 * floppy interrupt c-code. I tried very hard but I could not get the
157 * pseudo-dma to work in c-code without getting many overruns and
158 * underruns. If non-zero, doing_pdma encodes the direction of
159 * the transfer for debugging. 1=read 2=write
160 */
David S. Miller63b61452005-06-27 17:04:45 -0700161unsigned char *pdma_vaddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162unsigned long pdma_size;
163volatile int doing_pdma = 0;
164
165/* This is software state */
166char *pdma_base = NULL;
167unsigned long pdma_areasize;
168
169/* Common routines to all controller types on the Sparc. */
170static void sun_fd_disable_dma(void)
171{
172 doing_pdma = 0;
173 if (pdma_base) {
174 mmu_unlockarea(pdma_base, pdma_areasize);
175 pdma_base = NULL;
176 }
177}
178
179static void sun_fd_set_dma_mode(int mode)
180{
181 switch(mode) {
182 case DMA_MODE_READ:
183 doing_pdma = 1;
184 break;
185 case DMA_MODE_WRITE:
186 doing_pdma = 2;
187 break;
188 default:
189 printk("Unknown dma mode %d\n", mode);
190 panic("floppy: Giving up...");
191 }
192}
193
194static void sun_fd_set_dma_addr(char *buffer)
195{
196 pdma_vaddr = buffer;
197}
198
199static void sun_fd_set_dma_count(int length)
200{
201 pdma_size = length;
202}
203
204static void sun_fd_enable_dma(void)
205{
206 pdma_vaddr = mmu_lockarea(pdma_vaddr, pdma_size);
207 pdma_base = pdma_vaddr;
208 pdma_areasize = pdma_size;
209}
210
David S. Miller35055992006-06-25 01:32:25 -0700211irqreturn_t sparc_floppy_irq(int irq, void *dev_cookie, struct pt_regs *regs)
212{
213 if (likely(doing_pdma)) {
214 void __iomem *stat = (void __iomem *) fdc_status;
215 unsigned char *vaddr = pdma_vaddr;
216 unsigned long size = pdma_size;
217 u8 val;
218
219 while (size) {
220 val = readb(stat);
221 if (unlikely(!(val & 0x80))) {
222 pdma_vaddr = vaddr;
223 pdma_size = size;
224 return IRQ_HANDLED;
225 }
226 if (unlikely(!(val & 0x20))) {
227 pdma_vaddr = vaddr;
228 pdma_size = size;
229 doing_pdma = 0;
230 goto main_interrupt;
231 }
232 if (val & 0x40) {
233 /* read */
234 *vaddr++ = readb(stat + 1);
235 } else {
236 unsigned char data = *vaddr++;
237
238 /* write */
239 writeb(data, stat + 1);
240 }
241 size--;
242 }
243
244 pdma_vaddr = vaddr;
245 pdma_size = size;
246
247 /* Send Terminal Count pulse to floppy controller. */
248 val = readb(auxio_register);
249 val |= AUXIO_AUX1_FTCNT;
250 writeb(val, auxio_register);
251 val &= ~AUXIO_AUX1_FTCNT;
252 writeb(val, auxio_register);
253
254 doing_pdma = 0;
255 }
256
257main_interrupt:
258 return floppy_interrupt(irq, dev_cookie, regs);
259}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260
261static int sun_fd_request_irq(void)
262{
263 static int once = 0;
264 int error;
265
266 if(!once) {
267 once = 1;
268
David S. Miller63b61452005-06-27 17:04:45 -0700269 error = request_irq(FLOPPY_IRQ, sparc_floppy_irq,
Thomas Gleixnerd356d7f42006-07-01 19:29:26 -0700270 IRQF_DISABLED, "floppy", NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271
272 return ((error == 0) ? 0 : -1);
273 }
274 return 0;
275}
276
277static void sun_fd_free_irq(void)
278{
279}
280
281static unsigned int sun_get_dma_residue(void)
282{
283 /* XXX This isn't really correct. XXX */
284 return 0;
285}
286
287static int sun_fd_eject(int drive)
288{
289 set_dor(0x00, 0xff, 0x90);
290 udelay(500);
291 set_dor(0x00, 0x6f, 0x00);
292 udelay(500);
293 return 0;
294}
295
296#ifdef CONFIG_PCI
297#include <asm/ebus.h>
298#include <asm/isa.h>
299#include <asm/ns87303.h>
300
301static struct ebus_dma_info sun_pci_fd_ebus_dma;
302static struct pci_dev *sun_pci_ebus_dev;
303static int sun_pci_broken_drive = -1;
304
305struct sun_pci_dma_op {
306 unsigned int addr;
307 int len;
308 int direction;
309 char *buf;
310};
311static struct sun_pci_dma_op sun_pci_dma_current = { -1U, 0, 0, NULL};
312static struct sun_pci_dma_op sun_pci_dma_pending = { -1U, 0, 0, NULL};
313
314extern irqreturn_t floppy_interrupt(int irq, void *dev_id, struct pt_regs *regs);
315
316static unsigned char sun_pci_fd_inb(unsigned long port)
317{
318 udelay(5);
319 return inb(port);
320}
321
322static void sun_pci_fd_outb(unsigned char val, unsigned long port)
323{
324 udelay(5);
325 outb(val, port);
326}
327
328static void sun_pci_fd_broken_outb(unsigned char val, unsigned long port)
329{
330 udelay(5);
331 /*
332 * XXX: Due to SUN's broken floppy connector on AX and AXi
333 * we need to turn on MOTOR_0 also, if the floppy is
334 * jumpered to DS1 (like most PC floppies are). I hope
335 * this does not hurt correct hardware like the AXmp.
336 * (Eddie, Sep 12 1998).
337 */
338 if (port == ((unsigned long)sun_fdc) + 2) {
339 if (((val & 0x03) == sun_pci_broken_drive) && (val & 0x20)) {
340 val |= 0x10;
341 }
342 }
343 outb(val, port);
344}
345
346#ifdef PCI_FDC_SWAP_DRIVES
347static void sun_pci_fd_lde_broken_outb(unsigned char val, unsigned long port)
348{
349 udelay(5);
350 /*
351 * XXX: Due to SUN's broken floppy connector on AX and AXi
352 * we need to turn on MOTOR_0 also, if the floppy is
353 * jumpered to DS1 (like most PC floppies are). I hope
354 * this does not hurt correct hardware like the AXmp.
355 * (Eddie, Sep 12 1998).
356 */
357 if (port == ((unsigned long)sun_fdc) + 2) {
358 if (((val & 0x03) == sun_pci_broken_drive) && (val & 0x10)) {
359 val &= ~(0x03);
360 val |= 0x21;
361 }
362 }
363 outb(val, port);
364}
365#endif /* PCI_FDC_SWAP_DRIVES */
366
367static void sun_pci_fd_enable_dma(void)
368{
369 BUG_ON((NULL == sun_pci_dma_pending.buf) ||
370 (0 == sun_pci_dma_pending.len) ||
371 (0 == sun_pci_dma_pending.direction));
372
373 sun_pci_dma_current.buf = sun_pci_dma_pending.buf;
374 sun_pci_dma_current.len = sun_pci_dma_pending.len;
375 sun_pci_dma_current.direction = sun_pci_dma_pending.direction;
376
377 sun_pci_dma_pending.buf = NULL;
378 sun_pci_dma_pending.len = 0;
379 sun_pci_dma_pending.direction = 0;
380 sun_pci_dma_pending.addr = -1U;
381
382 sun_pci_dma_current.addr =
383 pci_map_single(sun_pci_ebus_dev,
384 sun_pci_dma_current.buf,
385 sun_pci_dma_current.len,
386 sun_pci_dma_current.direction);
387
388 ebus_dma_enable(&sun_pci_fd_ebus_dma, 1);
389
390 if (ebus_dma_request(&sun_pci_fd_ebus_dma,
391 sun_pci_dma_current.addr,
392 sun_pci_dma_current.len))
393 BUG();
394}
395
396static void sun_pci_fd_disable_dma(void)
397{
398 ebus_dma_enable(&sun_pci_fd_ebus_dma, 0);
399 if (sun_pci_dma_current.addr != -1U)
400 pci_unmap_single(sun_pci_ebus_dev,
401 sun_pci_dma_current.addr,
402 sun_pci_dma_current.len,
403 sun_pci_dma_current.direction);
404 sun_pci_dma_current.addr = -1U;
405}
406
407static void sun_pci_fd_set_dma_mode(int mode)
408{
409 if (mode == DMA_MODE_WRITE)
410 sun_pci_dma_pending.direction = PCI_DMA_TODEVICE;
411 else
412 sun_pci_dma_pending.direction = PCI_DMA_FROMDEVICE;
413
414 ebus_dma_prepare(&sun_pci_fd_ebus_dma, mode != DMA_MODE_WRITE);
415}
416
417static void sun_pci_fd_set_dma_count(int length)
418{
419 sun_pci_dma_pending.len = length;
420}
421
422static void sun_pci_fd_set_dma_addr(char *buffer)
423{
424 sun_pci_dma_pending.buf = buffer;
425}
426
427static unsigned int sun_pci_get_dma_residue(void)
428{
429 return ebus_dma_residue(&sun_pci_fd_ebus_dma);
430}
431
432static int sun_pci_fd_request_irq(void)
433{
434 return ebus_dma_irq_enable(&sun_pci_fd_ebus_dma, 1);
435}
436
437static void sun_pci_fd_free_irq(void)
438{
439 ebus_dma_irq_enable(&sun_pci_fd_ebus_dma, 0);
440}
441
442static int sun_pci_fd_eject(int drive)
443{
444 return -EINVAL;
445}
446
447void sun_pci_fd_dma_callback(struct ebus_dma_info *p, int event, void *cookie)
448{
449 floppy_interrupt(0, NULL, NULL);
450}
451
452/*
453 * Floppy probing, we'd like to use /dev/fd0 for a single Floppy on PCI,
454 * even if this is configured using DS1, thus looks like /dev/fd1 with
455 * the cabling used in Ultras.
456 */
457#define DOR (port + 2)
458#define MSR (port + 4)
459#define FIFO (port + 5)
460
461static void sun_pci_fd_out_byte(unsigned long port, unsigned char val,
462 unsigned long reg)
463{
464 unsigned char status;
465 int timeout = 1000;
466
467 while (!((status = inb(MSR)) & 0x80) && --timeout)
468 udelay(100);
469 outb(val, reg);
470}
471
472static unsigned char sun_pci_fd_sensei(unsigned long port)
473{
474 unsigned char result[2] = { 0x70, 0x00 };
475 unsigned char status;
476 int i = 0;
477
478 sun_pci_fd_out_byte(port, 0x08, FIFO);
479 do {
480 int timeout = 1000;
481
482 while (!((status = inb(MSR)) & 0x80) && --timeout)
483 udelay(100);
484
485 if (!timeout)
486 break;
487
488 if ((status & 0xf0) == 0xd0)
489 result[i++] = inb(FIFO);
490 else
491 break;
492 } while (i < 2);
493
494 return result[0];
495}
496
497static void sun_pci_fd_reset(unsigned long port)
498{
499 unsigned char mask = 0x00;
500 unsigned char status;
501 int timeout = 10000;
502
503 outb(0x80, MSR);
504 do {
505 status = sun_pci_fd_sensei(port);
506 if ((status & 0xc0) == 0xc0)
507 mask |= 1 << (status & 0x03);
508 else
509 udelay(100);
510 } while ((mask != 0x0f) && --timeout);
511}
512
513static int sun_pci_fd_test_drive(unsigned long port, int drive)
514{
515 unsigned char status, data;
516 int timeout = 1000;
517 int ready;
518
519 sun_pci_fd_reset(port);
520
521 data = (0x10 << drive) | 0x0c | drive;
522 sun_pci_fd_out_byte(port, data, DOR);
523
524 sun_pci_fd_out_byte(port, 0x07, FIFO);
525 sun_pci_fd_out_byte(port, drive & 0x03, FIFO);
526
527 do {
528 udelay(100);
529 status = sun_pci_fd_sensei(port);
530 } while (((status & 0xc0) == 0x80) && --timeout);
531
532 if (!timeout)
533 ready = 0;
534 else
535 ready = (status & 0x10) ? 0 : 1;
536
537 sun_pci_fd_reset(port);
538 return ready;
539}
540#undef FIFO
541#undef MSR
542#undef DOR
543
544#endif /* CONFIG_PCI */
545
546#ifdef CONFIG_PCI
547static int __init ebus_fdthree_p(struct linux_ebus_device *edev)
548{
David S. Miller690c8fd2006-06-22 19:12:03 -0700549 if (!strcmp(edev->prom_node->name, "fdthree"))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550 return 1;
David S. Miller690c8fd2006-06-22 19:12:03 -0700551 if (!strcmp(edev->prom_node->name, "floppy")) {
552 char *compat;
553
554 compat = of_get_property(edev->prom_node,
555 "compatible", NULL);
556 if (compat && !strcmp(compat, "fdthree"))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557 return 1;
558 }
559 return 0;
560}
561#endif
562
563#ifdef CONFIG_PCI
564#undef ISA_FLOPPY_WORKS
565
566#ifdef ISA_FLOPPY_WORKS
567static unsigned long __init isa_floppy_init(void)
568{
569 struct sparc_isa_bridge *isa_br;
570 struct sparc_isa_device *isa_dev = NULL;
571
572 for_each_isa(isa_br) {
573 for_each_isadev(isa_dev, isa_br) {
David S. Miller690c8fd2006-06-22 19:12:03 -0700574 if (!strcmp(isa_dev->prom_node->name, "dma")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575 struct sparc_isa_device *child =
576 isa_dev->child;
577
578 while (child) {
David S. Miller690c8fd2006-06-22 19:12:03 -0700579 if (!strcmp(child->prom_node->name,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580 "floppy")) {
581 isa_dev = child;
582 goto isa_done;
583 }
584 child = child->next;
585 }
586 }
587 }
588 }
589isa_done:
590 if (!isa_dev)
591 return 0;
592
593 /* We could use DMA on devices behind the ISA bridge, but...
594 *
595 * There is a slight problem. Normally on x86 kit the x86 processor
596 * delays I/O port instructions when the ISA bus "dma in progress"
597 * signal is active. Well, sparc64 systems do not monitor this
598 * signal thus we would need to block all I/O port accesses in software
599 * when a dma transfer is active for some device.
600 */
601
602 sun_fdc = (struct sun_flpy_controller *)isa_dev->resource.start;
603 FLOPPY_IRQ = isa_dev->irq;
604
605 sun_fdops.fd_inb = sun_pci_fd_inb;
606 sun_fdops.fd_outb = sun_pci_fd_outb;
607
608 can_use_virtual_dma = use_virtual_dma = 1;
609 sun_fdops.fd_enable_dma = sun_fd_enable_dma;
610 sun_fdops.fd_disable_dma = sun_fd_disable_dma;
611 sun_fdops.fd_set_dma_mode = sun_fd_set_dma_mode;
612 sun_fdops.fd_set_dma_addr = sun_fd_set_dma_addr;
613 sun_fdops.fd_set_dma_count = sun_fd_set_dma_count;
614 sun_fdops.get_dma_residue = sun_get_dma_residue;
615
616 sun_fdops.fd_request_irq = sun_fd_request_irq;
617 sun_fdops.fd_free_irq = sun_fd_free_irq;
618
619 /* Floppy eject is manual. Actually, could determine this
620 * via presence of 'manual' property in OBP node.
621 */
622 sun_fdops.fd_eject = sun_pci_fd_eject;
623
624 fdc_status = (unsigned long) &sun_fdc->status_82077;
625 FLOPPY_MOTOR_MASK = 0xf0;
626
627 allowed_drive_mask = 0;
628 sun_floppy_types[0] = 0;
629 sun_floppy_types[1] = 4;
630
631 sun_pci_broken_drive = 1;
632 sun_fdops.fd_outb = sun_pci_fd_broken_outb;
633
634 return sun_floppy_types[0];
635}
636#endif /* ISA_FLOPPY_WORKS */
637
638#endif
639
640static unsigned long __init sun_floppy_init(void)
641{
642 char state[128];
643 struct sbus_bus *bus;
644 struct sbus_dev *sdev = NULL;
645 static int initialized = 0;
646
647 if (initialized)
648 return sun_floppy_types[0];
649 initialized = 1;
650
651 for_all_sbusdev (sdev, bus) {
652 if (!strcmp(sdev->prom_name, "SUNW,fdtwo"))
653 break;
654 }
655 if(sdev) {
656 floppy_sdev = sdev;
657 FLOPPY_IRQ = sdev->irqs[0];
658 } else {
659#ifdef CONFIG_PCI
660 struct linux_ebus *ebus;
661 struct linux_ebus_device *edev = NULL;
662 unsigned long config = 0;
David S. Miller63b61452005-06-27 17:04:45 -0700663 void __iomem *auxio_reg;
David S. Miller690c8fd2006-06-22 19:12:03 -0700664 char *state_prop;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665
666 for_each_ebus(ebus) {
667 for_each_ebusdev(edev, ebus) {
668 if (ebus_fdthree_p(edev))
669 goto ebus_done;
670 }
671 }
672 ebus_done:
673 if (!edev) {
674#ifdef ISA_FLOPPY_WORKS
675 return isa_floppy_init();
676#else
677 return 0;
678#endif
679 }
680
David S. Miller690c8fd2006-06-22 19:12:03 -0700681 state_prop = of_get_property(edev->prom_node, "status", NULL);
682 if (state_prop && !strncmp(state_prop, "disabled", 8))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683 return 0;
684
685 FLOPPY_IRQ = edev->irqs[0];
686
687 /* Make sure the high density bit is set, some systems
688 * (most notably Ultra5/Ultra10) come up with it clear.
689 */
David S. Miller63b61452005-06-27 17:04:45 -0700690 auxio_reg = (void __iomem *) edev->resource[2].start;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691 writel(readl(auxio_reg)|0x2, auxio_reg);
692
693 sun_pci_ebus_dev = ebus->self;
694
695 spin_lock_init(&sun_pci_fd_ebus_dma.lock);
696
697 /* XXX ioremap */
David S. Miller63b61452005-06-27 17:04:45 -0700698 sun_pci_fd_ebus_dma.regs = (void __iomem *)
699 edev->resource[1].start;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700 if (!sun_pci_fd_ebus_dma.regs)
701 return 0;
702
703 sun_pci_fd_ebus_dma.flags = (EBUS_DMA_FLAG_USE_EBDMA_HANDLER |
704 EBUS_DMA_FLAG_TCI_DISABLE);
705 sun_pci_fd_ebus_dma.callback = sun_pci_fd_dma_callback;
706 sun_pci_fd_ebus_dma.client_cookie = NULL;
707 sun_pci_fd_ebus_dma.irq = FLOPPY_IRQ;
708 strcpy(sun_pci_fd_ebus_dma.name, "floppy");
709 if (ebus_dma_register(&sun_pci_fd_ebus_dma))
710 return 0;
711
712 /* XXX ioremap */
713 sun_fdc = (struct sun_flpy_controller *)edev->resource[0].start;
714
715 sun_fdops.fd_inb = sun_pci_fd_inb;
716 sun_fdops.fd_outb = sun_pci_fd_outb;
717
718 can_use_virtual_dma = use_virtual_dma = 0;
719 sun_fdops.fd_enable_dma = sun_pci_fd_enable_dma;
720 sun_fdops.fd_disable_dma = sun_pci_fd_disable_dma;
721 sun_fdops.fd_set_dma_mode = sun_pci_fd_set_dma_mode;
722 sun_fdops.fd_set_dma_addr = sun_pci_fd_set_dma_addr;
723 sun_fdops.fd_set_dma_count = sun_pci_fd_set_dma_count;
724 sun_fdops.get_dma_residue = sun_pci_get_dma_residue;
725
726 sun_fdops.fd_request_irq = sun_pci_fd_request_irq;
727 sun_fdops.fd_free_irq = sun_pci_fd_free_irq;
728
729 sun_fdops.fd_eject = sun_pci_fd_eject;
730
731 fdc_status = (unsigned long) &sun_fdc->status_82077;
732 FLOPPY_MOTOR_MASK = 0xf0;
733
734 /*
735 * XXX: Find out on which machines this is really needed.
736 */
737 if (1) {
738 sun_pci_broken_drive = 1;
739 sun_fdops.fd_outb = sun_pci_fd_broken_outb;
740 }
741
742 allowed_drive_mask = 0;
743 if (sun_pci_fd_test_drive((unsigned long)sun_fdc, 0))
744 sun_floppy_types[0] = 4;
745 if (sun_pci_fd_test_drive((unsigned long)sun_fdc, 1))
746 sun_floppy_types[1] = 4;
747
748 /*
749 * Find NS87303 SuperIO config registers (through ecpp).
750 */
751 for_each_ebus(ebus) {
752 for_each_ebusdev(edev, ebus) {
David S. Miller690c8fd2006-06-22 19:12:03 -0700753 if (!strcmp(edev->prom_node->name, "ecpp")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754 config = edev->resource[1].start;
755 goto config_done;
756 }
757 }
758 }
759 config_done:
760
761 /*
762 * Sanity check, is this really the NS87303?
763 */
764 switch (config & 0x3ff) {
765 case 0x02e:
766 case 0x15c:
767 case 0x26e:
768 case 0x398:
769 break;
770 default:
771 config = 0;
772 }
773
774 if (!config)
775 return sun_floppy_types[0];
776
777 /* Enable PC-AT mode. */
778 ns87303_modify(config, ASC, 0, 0xc0);
779
780#ifdef PCI_FDC_SWAP_DRIVES
781 /*
782 * If only Floppy 1 is present, swap drives.
783 */
784 if (!sun_floppy_types[0] && sun_floppy_types[1]) {
785 /*
786 * Set the drive exchange bit in FCR on NS87303,
Alexey Dobriyan7f927fc2006-03-28 01:56:53 -0800787 * make sure other bits are sane before doing so.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700788 */
789 ns87303_modify(config, FER, FER_EDM, 0);
790 ns87303_modify(config, ASC, ASC_DRV2_SEL, 0);
791 ns87303_modify(config, FCR, 0, FCR_LDE);
792
793 config = sun_floppy_types[0];
794 sun_floppy_types[0] = sun_floppy_types[1];
795 sun_floppy_types[1] = config;
796
797 if (sun_pci_broken_drive != -1) {
798 sun_pci_broken_drive = 1 - sun_pci_broken_drive;
799 sun_fdops.fd_outb = sun_pci_fd_lde_broken_outb;
800 }
801 }
802#endif /* PCI_FDC_SWAP_DRIVES */
803
804 return sun_floppy_types[0];
805#else
806 return 0;
807#endif
808 }
809 prom_getproperty(sdev->prom_node, "status", state, sizeof(state));
810 if(!strncmp(state, "disabled", 8))
811 return 0;
812
813 /*
814 * We cannot do sbus_ioremap here: it does request_region,
815 * which the generic floppy driver tries to do once again.
816 * But we must use the sdev resource values as they have
817 * had parent ranges applied.
818 */
819 sun_fdc = (struct sun_flpy_controller *)
820 (sdev->resource[0].start +
821 ((sdev->resource[0].flags & 0x1ffUL) << 32UL));
822
823 /* Last minute sanity check... */
824 if(sbus_readb(&sun_fdc->status1_82077) == 0xff) {
825 sun_fdc = (struct sun_flpy_controller *)-1;
826 return 0;
827 }
828
829 sun_fdops.fd_inb = sun_82077_fd_inb;
830 sun_fdops.fd_outb = sun_82077_fd_outb;
831
832 can_use_virtual_dma = use_virtual_dma = 1;
833 sun_fdops.fd_enable_dma = sun_fd_enable_dma;
834 sun_fdops.fd_disable_dma = sun_fd_disable_dma;
835 sun_fdops.fd_set_dma_mode = sun_fd_set_dma_mode;
836 sun_fdops.fd_set_dma_addr = sun_fd_set_dma_addr;
837 sun_fdops.fd_set_dma_count = sun_fd_set_dma_count;
838 sun_fdops.get_dma_residue = sun_get_dma_residue;
839
840 sun_fdops.fd_request_irq = sun_fd_request_irq;
841 sun_fdops.fd_free_irq = sun_fd_free_irq;
842
843 sun_fdops.fd_eject = sun_fd_eject;
844
845 fdc_status = (unsigned long) &sun_fdc->status_82077;
846
847 /* Success... */
848 allowed_drive_mask = 0x01;
849 sun_floppy_types[0] = 4;
850 sun_floppy_types[1] = 0;
851
852 return sun_floppy_types[0];
853}
854
855#define EXTRA_FLOPPY_PARAMS
856
857#endif /* !(__ASM_SPARC64_FLOPPY_H) */