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-rw-r--r--include/asm-sparc64/floppy.h783
1 files changed, 1 insertions, 782 deletions
diff --git a/include/asm-sparc64/floppy.h b/include/asm-sparc64/floppy.h
index ca19f80a9b7d..214878114436 100644
--- a/include/asm-sparc64/floppy.h
+++ b/include/asm-sparc64/floppy.h
@@ -1,782 +1 @@
1/* floppy.h: Sparc specific parts of the Floppy driver. #include <asm-sparc/floppy.h>
2 *
3 * Copyright (C) 1996, 2007 David S. Miller (davem@davemloft.net)
4 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
5 *
6 * Ultra/PCI support added: Sep 1997 Eddie C. Dost (ecd@skynet.be)
7 */
8
9#ifndef __ASM_SPARC64_FLOPPY_H
10#define __ASM_SPARC64_FLOPPY_H
11
12#include <linux/init.h>
13#include <linux/pci.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
87/* Super paranoid... */
88#undef HAVE_DISABLE_HLT
89
90static int sun_floppy_types[2] = { 0, 0 };
91
92/* Here is where we catch the floppy driver trying to initialize,
93 * therefore this is where we call the PROM device tree probing
94 * routine etc. on the Sparc.
95 */
96#define FLOPPY0_TYPE sun_floppy_init()
97#define FLOPPY1_TYPE sun_floppy_types[1]
98
99#define FDC1 ((unsigned long)sun_fdc)
100
101#define N_FDC 1
102#define N_DRIVE 8
103
104/* No 64k boundary crossing problems on the Sparc. */
105#define CROSS_64KB(a,s) (0)
106
107static unsigned char sun_82077_fd_inb(unsigned long port)
108{
109 udelay(5);
110 switch(port & 7) {
111 default:
112 printk("floppy: Asked to read unknown port %lx\n", port);
113 panic("floppy: Port bolixed.");
114 case 4: /* FD_STATUS */
115 return sbus_readb(&sun_fdc->status_82077) & ~STATUS_DMA;
116 case 5: /* FD_DATA */
117 return sbus_readb(&sun_fdc->data_82077);
118 case 7: /* FD_DIR */
119 /* XXX: Is DCL on 0x80 in sun4m? */
120 return sbus_readb(&sun_fdc->dir_82077);
121 };
122 panic("sun_82072_fd_inb: How did I get here?");
123}
124
125static void sun_82077_fd_outb(unsigned char value, unsigned long port)
126{
127 udelay(5);
128 switch(port & 7) {
129 default:
130 printk("floppy: Asked to write to unknown port %lx\n", port);
131 panic("floppy: Port bolixed.");
132 case 2: /* FD_DOR */
133 /* Happily, the 82077 has a real DOR register. */
134 sbus_writeb(value, &sun_fdc->dor_82077);
135 break;
136 case 5: /* FD_DATA */
137 sbus_writeb(value, &sun_fdc->data_82077);
138 break;
139 case 7: /* FD_DCR */
140 sbus_writeb(value, &sun_fdc->dcr_82077);
141 break;
142 case 4: /* FD_STATUS */
143 sbus_writeb(value, &sun_fdc->status_82077);
144 break;
145 };
146 return;
147}
148
149/* For pseudo-dma (Sun floppy drives have no real DMA available to
150 * them so we must eat the data fifo bytes directly ourselves) we have
151 * three state variables. doing_pdma tells our inline low-level
152 * assembly floppy interrupt entry point whether it should sit and eat
153 * bytes from the fifo or just transfer control up to the higher level
154 * floppy interrupt c-code. I tried very hard but I could not get the
155 * pseudo-dma to work in c-code without getting many overruns and
156 * underruns. If non-zero, doing_pdma encodes the direction of
157 * the transfer for debugging. 1=read 2=write
158 */
159unsigned char *pdma_vaddr;
160unsigned long pdma_size;
161volatile int doing_pdma = 0;
162
163/* This is software state */
164char *pdma_base = NULL;
165unsigned long pdma_areasize;
166
167/* Common routines to all controller types on the Sparc. */
168static void sun_fd_disable_dma(void)
169{
170 doing_pdma = 0;
171 if (pdma_base) {
172 mmu_unlockarea(pdma_base, pdma_areasize);
173 pdma_base = NULL;
174 }
175}
176
177static void sun_fd_set_dma_mode(int mode)
178{
179 switch(mode) {
180 case DMA_MODE_READ:
181 doing_pdma = 1;
182 break;
183 case DMA_MODE_WRITE:
184 doing_pdma = 2;
185 break;
186 default:
187 printk("Unknown dma mode %d\n", mode);
188 panic("floppy: Giving up...");
189 }
190}
191
192static void sun_fd_set_dma_addr(char *buffer)
193{
194 pdma_vaddr = buffer;
195}
196
197static void sun_fd_set_dma_count(int length)
198{
199 pdma_size = length;
200}
201
202static void sun_fd_enable_dma(void)
203{
204 pdma_vaddr = mmu_lockarea(pdma_vaddr, pdma_size);
205 pdma_base = pdma_vaddr;
206 pdma_areasize = pdma_size;
207}
208
209irqreturn_t sparc_floppy_irq(int irq, void *dev_cookie)
210{
211 if (likely(doing_pdma)) {
212 void __iomem *stat = (void __iomem *) fdc_status;
213 unsigned char *vaddr = pdma_vaddr;
214 unsigned long size = pdma_size;
215 u8 val;
216
217 while (size) {
218 val = readb(stat);
219 if (unlikely(!(val & 0x80))) {
220 pdma_vaddr = vaddr;
221 pdma_size = size;
222 return IRQ_HANDLED;
223 }
224 if (unlikely(!(val & 0x20))) {
225 pdma_vaddr = vaddr;
226 pdma_size = size;
227 doing_pdma = 0;
228 goto main_interrupt;
229 }
230 if (val & 0x40) {
231 /* read */
232 *vaddr++ = readb(stat + 1);
233 } else {
234 unsigned char data = *vaddr++;
235
236 /* write */
237 writeb(data, stat + 1);
238 }
239 size--;
240 }
241
242 pdma_vaddr = vaddr;
243 pdma_size = size;
244
245 /* Send Terminal Count pulse to floppy controller. */
246 val = readb(auxio_register);
247 val |= AUXIO_AUX1_FTCNT;
248 writeb(val, auxio_register);
249 val &= ~AUXIO_AUX1_FTCNT;
250 writeb(val, auxio_register);
251
252 doing_pdma = 0;
253 }
254
255main_interrupt:
256 return floppy_interrupt(irq, dev_cookie);
257}
258
259static int sun_fd_request_irq(void)
260{
261 static int once = 0;
262 int error;
263
264 if(!once) {
265 once = 1;
266
267 error = request_irq(FLOPPY_IRQ, sparc_floppy_irq,
268 IRQF_DISABLED, "floppy", NULL);
269
270 return ((error == 0) ? 0 : -1);
271 }
272 return 0;
273}
274
275static void sun_fd_free_irq(void)
276{
277}
278
279static unsigned int sun_get_dma_residue(void)
280{
281 /* XXX This isn't really correct. XXX */
282 return 0;
283}
284
285static int sun_fd_eject(int drive)
286{
287 set_dor(0x00, 0xff, 0x90);
288 udelay(500);
289 set_dor(0x00, 0x6f, 0x00);
290 udelay(500);
291 return 0;
292}
293
294#ifdef CONFIG_PCI
295#include <asm/ebus.h>
296#include <asm/ns87303.h>
297
298static struct ebus_dma_info sun_pci_fd_ebus_dma;
299static struct pci_dev *sun_pci_ebus_dev;
300static int sun_pci_broken_drive = -1;
301
302struct sun_pci_dma_op {
303 unsigned int addr;
304 int len;
305 int direction;
306 char *buf;
307};
308static struct sun_pci_dma_op sun_pci_dma_current = { -1U, 0, 0, NULL};
309static struct sun_pci_dma_op sun_pci_dma_pending = { -1U, 0, 0, NULL};
310
311extern irqreturn_t floppy_interrupt(int irq, void *dev_id);
312
313static unsigned char sun_pci_fd_inb(unsigned long port)
314{
315 udelay(5);
316 return inb(port);
317}
318
319static void sun_pci_fd_outb(unsigned char val, unsigned long port)
320{
321 udelay(5);
322 outb(val, port);
323}
324
325static void sun_pci_fd_broken_outb(unsigned char val, unsigned long port)
326{
327 udelay(5);
328 /*
329 * XXX: Due to SUN's broken floppy connector on AX and AXi
330 * we need to turn on MOTOR_0 also, if the floppy is
331 * jumpered to DS1 (like most PC floppies are). I hope
332 * this does not hurt correct hardware like the AXmp.
333 * (Eddie, Sep 12 1998).
334 */
335 if (port == ((unsigned long)sun_fdc) + 2) {
336 if (((val & 0x03) == sun_pci_broken_drive) && (val & 0x20)) {
337 val |= 0x10;
338 }
339 }
340 outb(val, port);
341}
342
343#ifdef PCI_FDC_SWAP_DRIVES
344static void sun_pci_fd_lde_broken_outb(unsigned char val, unsigned long port)
345{
346 udelay(5);
347 /*
348 * XXX: Due to SUN's broken floppy connector on AX and AXi
349 * we need to turn on MOTOR_0 also, if the floppy is
350 * jumpered to DS1 (like most PC floppies are). I hope
351 * this does not hurt correct hardware like the AXmp.
352 * (Eddie, Sep 12 1998).
353 */
354 if (port == ((unsigned long)sun_fdc) + 2) {
355 if (((val & 0x03) == sun_pci_broken_drive) && (val & 0x10)) {
356 val &= ~(0x03);
357 val |= 0x21;
358 }
359 }
360 outb(val, port);
361}
362#endif /* PCI_FDC_SWAP_DRIVES */
363
364static void sun_pci_fd_enable_dma(void)
365{
366 BUG_ON((NULL == sun_pci_dma_pending.buf) ||
367 (0 == sun_pci_dma_pending.len) ||
368 (0 == sun_pci_dma_pending.direction));
369
370 sun_pci_dma_current.buf = sun_pci_dma_pending.buf;
371 sun_pci_dma_current.len = sun_pci_dma_pending.len;
372 sun_pci_dma_current.direction = sun_pci_dma_pending.direction;
373
374 sun_pci_dma_pending.buf = NULL;
375 sun_pci_dma_pending.len = 0;
376 sun_pci_dma_pending.direction = 0;
377 sun_pci_dma_pending.addr = -1U;
378
379 sun_pci_dma_current.addr =
380 pci_map_single(sun_pci_ebus_dev,
381 sun_pci_dma_current.buf,
382 sun_pci_dma_current.len,
383 sun_pci_dma_current.direction);
384
385 ebus_dma_enable(&sun_pci_fd_ebus_dma, 1);
386
387 if (ebus_dma_request(&sun_pci_fd_ebus_dma,
388 sun_pci_dma_current.addr,
389 sun_pci_dma_current.len))
390 BUG();
391}
392
393static void sun_pci_fd_disable_dma(void)
394{
395 ebus_dma_enable(&sun_pci_fd_ebus_dma, 0);
396 if (sun_pci_dma_current.addr != -1U)
397 pci_unmap_single(sun_pci_ebus_dev,
398 sun_pci_dma_current.addr,
399 sun_pci_dma_current.len,
400 sun_pci_dma_current.direction);
401 sun_pci_dma_current.addr = -1U;
402}
403
404static void sun_pci_fd_set_dma_mode(int mode)
405{
406 if (mode == DMA_MODE_WRITE)
407 sun_pci_dma_pending.direction = PCI_DMA_TODEVICE;
408 else
409 sun_pci_dma_pending.direction = PCI_DMA_FROMDEVICE;
410
411 ebus_dma_prepare(&sun_pci_fd_ebus_dma, mode != DMA_MODE_WRITE);
412}
413
414static void sun_pci_fd_set_dma_count(int length)
415{
416 sun_pci_dma_pending.len = length;
417}
418
419static void sun_pci_fd_set_dma_addr(char *buffer)
420{
421 sun_pci_dma_pending.buf = buffer;
422}
423
424static unsigned int sun_pci_get_dma_residue(void)
425{
426 return ebus_dma_residue(&sun_pci_fd_ebus_dma);
427}
428
429static int sun_pci_fd_request_irq(void)
430{
431 return ebus_dma_irq_enable(&sun_pci_fd_ebus_dma, 1);
432}
433
434static void sun_pci_fd_free_irq(void)
435{
436 ebus_dma_irq_enable(&sun_pci_fd_ebus_dma, 0);
437}
438
439static int sun_pci_fd_eject(int drive)
440{
441 return -EINVAL;
442}
443
444void sun_pci_fd_dma_callback(struct ebus_dma_info *p, int event, void *cookie)
445{
446 floppy_interrupt(0, NULL);
447}
448
449/*
450 * Floppy probing, we'd like to use /dev/fd0 for a single Floppy on PCI,
451 * even if this is configured using DS1, thus looks like /dev/fd1 with
452 * the cabling used in Ultras.
453 */
454#define DOR (port + 2)
455#define MSR (port + 4)
456#define FIFO (port + 5)
457
458static void sun_pci_fd_out_byte(unsigned long port, unsigned char val,
459 unsigned long reg)
460{
461 unsigned char status;
462 int timeout = 1000;
463
464 while (!((status = inb(MSR)) & 0x80) && --timeout)
465 udelay(100);
466 outb(val, reg);
467}
468
469static unsigned char sun_pci_fd_sensei(unsigned long port)
470{
471 unsigned char result[2] = { 0x70, 0x00 };
472 unsigned char status;
473 int i = 0;
474
475 sun_pci_fd_out_byte(port, 0x08, FIFO);
476 do {
477 int timeout = 1000;
478
479 while (!((status = inb(MSR)) & 0x80) && --timeout)
480 udelay(100);
481
482 if (!timeout)
483 break;
484
485 if ((status & 0xf0) == 0xd0)
486 result[i++] = inb(FIFO);
487 else
488 break;
489 } while (i < 2);
490
491 return result[0];
492}
493
494static void sun_pci_fd_reset(unsigned long port)
495{
496 unsigned char mask = 0x00;
497 unsigned char status;
498 int timeout = 10000;
499
500 outb(0x80, MSR);
501 do {
502 status = sun_pci_fd_sensei(port);
503 if ((status & 0xc0) == 0xc0)
504 mask |= 1 << (status & 0x03);
505 else
506 udelay(100);
507 } while ((mask != 0x0f) && --timeout);
508}
509
510static int sun_pci_fd_test_drive(unsigned long port, int drive)
511{
512 unsigned char status, data;
513 int timeout = 1000;
514 int ready;
515
516 sun_pci_fd_reset(port);
517
518 data = (0x10 << drive) | 0x0c | drive;
519 sun_pci_fd_out_byte(port, data, DOR);
520
521 sun_pci_fd_out_byte(port, 0x07, FIFO);
522 sun_pci_fd_out_byte(port, drive & 0x03, FIFO);
523
524 do {
525 udelay(100);
526 status = sun_pci_fd_sensei(port);
527 } while (((status & 0xc0) == 0x80) && --timeout);
528
529 if (!timeout)
530 ready = 0;
531 else
532 ready = (status & 0x10) ? 0 : 1;
533
534 sun_pci_fd_reset(port);
535 return ready;
536}
537#undef FIFO
538#undef MSR
539#undef DOR
540
541#endif /* CONFIG_PCI */
542
543#ifdef CONFIG_PCI
544static int __init ebus_fdthree_p(struct linux_ebus_device *edev)
545{
546 if (!strcmp(edev->prom_node->name, "fdthree"))
547 return 1;
548 if (!strcmp(edev->prom_node->name, "floppy")) {
549 const char *compat;
550
551 compat = of_get_property(edev->prom_node,
552 "compatible", NULL);
553 if (compat && !strcmp(compat, "fdthree"))
554 return 1;
555 }
556 return 0;
557}
558#endif
559
560static unsigned long __init sun_floppy_init(void)
561{
562 char state[128];
563 struct sbus_bus *bus;
564 struct sbus_dev *sdev = NULL;
565 static int initialized = 0;
566
567 if (initialized)
568 return sun_floppy_types[0];
569 initialized = 1;
570
571 for_all_sbusdev (sdev, bus) {
572 if (!strcmp(sdev->prom_name, "SUNW,fdtwo"))
573 break;
574 }
575 if(sdev) {
576 floppy_sdev = sdev;
577 FLOPPY_IRQ = sdev->irqs[0];
578 } else {
579#ifdef CONFIG_PCI
580 struct linux_ebus *ebus;
581 struct linux_ebus_device *edev = NULL;
582 unsigned long config = 0;
583 void __iomem *auxio_reg;
584 const char *state_prop;
585
586 for_each_ebus(ebus) {
587 for_each_ebusdev(edev, ebus) {
588 if (ebus_fdthree_p(edev))
589 goto ebus_done;
590 }
591 }
592 ebus_done:
593 if (!edev)
594 return 0;
595
596 state_prop = of_get_property(edev->prom_node, "status", NULL);
597 if (state_prop && !strncmp(state_prop, "disabled", 8))
598 return 0;
599
600 FLOPPY_IRQ = edev->irqs[0];
601
602 /* Make sure the high density bit is set, some systems
603 * (most notably Ultra5/Ultra10) come up with it clear.
604 */
605 auxio_reg = (void __iomem *) edev->resource[2].start;
606 writel(readl(auxio_reg)|0x2, auxio_reg);
607
608 sun_pci_ebus_dev = ebus->self;
609
610 spin_lock_init(&sun_pci_fd_ebus_dma.lock);
611
612 /* XXX ioremap */
613 sun_pci_fd_ebus_dma.regs = (void __iomem *)
614 edev->resource[1].start;
615 if (!sun_pci_fd_ebus_dma.regs)
616 return 0;
617
618 sun_pci_fd_ebus_dma.flags = (EBUS_DMA_FLAG_USE_EBDMA_HANDLER |
619 EBUS_DMA_FLAG_TCI_DISABLE);
620 sun_pci_fd_ebus_dma.callback = sun_pci_fd_dma_callback;
621 sun_pci_fd_ebus_dma.client_cookie = NULL;
622 sun_pci_fd_ebus_dma.irq = FLOPPY_IRQ;
623 strcpy(sun_pci_fd_ebus_dma.name, "floppy");
624 if (ebus_dma_register(&sun_pci_fd_ebus_dma))
625 return 0;
626
627 /* XXX ioremap */
628 sun_fdc = (struct sun_flpy_controller *)edev->resource[0].start;
629
630 sun_fdops.fd_inb = sun_pci_fd_inb;
631 sun_fdops.fd_outb = sun_pci_fd_outb;
632
633 can_use_virtual_dma = use_virtual_dma = 0;
634 sun_fdops.fd_enable_dma = sun_pci_fd_enable_dma;
635 sun_fdops.fd_disable_dma = sun_pci_fd_disable_dma;
636 sun_fdops.fd_set_dma_mode = sun_pci_fd_set_dma_mode;
637 sun_fdops.fd_set_dma_addr = sun_pci_fd_set_dma_addr;
638 sun_fdops.fd_set_dma_count = sun_pci_fd_set_dma_count;
639 sun_fdops.get_dma_residue = sun_pci_get_dma_residue;
640
641 sun_fdops.fd_request_irq = sun_pci_fd_request_irq;
642 sun_fdops.fd_free_irq = sun_pci_fd_free_irq;
643
644 sun_fdops.fd_eject = sun_pci_fd_eject;
645
646 fdc_status = (unsigned long) &sun_fdc->status_82077;
647
648 /*
649 * XXX: Find out on which machines this is really needed.
650 */
651 if (1) {
652 sun_pci_broken_drive = 1;
653 sun_fdops.fd_outb = sun_pci_fd_broken_outb;
654 }
655
656 allowed_drive_mask = 0;
657 if (sun_pci_fd_test_drive((unsigned long)sun_fdc, 0))
658 sun_floppy_types[0] = 4;
659 if (sun_pci_fd_test_drive((unsigned long)sun_fdc, 1))
660 sun_floppy_types[1] = 4;
661
662 /*
663 * Find NS87303 SuperIO config registers (through ecpp).
664 */
665 for_each_ebus(ebus) {
666 for_each_ebusdev(edev, ebus) {
667 if (!strcmp(edev->prom_node->name, "ecpp")) {
668 config = edev->resource[1].start;
669 goto config_done;
670 }
671 }
672 }
673 config_done:
674
675 /*
676 * Sanity check, is this really the NS87303?
677 */
678 switch (config & 0x3ff) {
679 case 0x02e:
680 case 0x15c:
681 case 0x26e:
682 case 0x398:
683 break;
684 default:
685 config = 0;
686 }
687
688 if (!config)
689 return sun_floppy_types[0];
690
691 /* Enable PC-AT mode. */
692 ns87303_modify(config, ASC, 0, 0xc0);
693
694#ifdef PCI_FDC_SWAP_DRIVES
695 /*
696 * If only Floppy 1 is present, swap drives.
697 */
698 if (!sun_floppy_types[0] && sun_floppy_types[1]) {
699 /*
700 * Set the drive exchange bit in FCR on NS87303,
701 * make sure other bits are sane before doing so.
702 */
703 ns87303_modify(config, FER, FER_EDM, 0);
704 ns87303_modify(config, ASC, ASC_DRV2_SEL, 0);
705 ns87303_modify(config, FCR, 0, FCR_LDE);
706
707 config = sun_floppy_types[0];
708 sun_floppy_types[0] = sun_floppy_types[1];
709 sun_floppy_types[1] = config;
710
711 if (sun_pci_broken_drive != -1) {
712 sun_pci_broken_drive = 1 - sun_pci_broken_drive;
713 sun_fdops.fd_outb = sun_pci_fd_lde_broken_outb;
714 }
715 }
716#endif /* PCI_FDC_SWAP_DRIVES */
717
718 return sun_floppy_types[0];
719#else
720 return 0;
721#endif
722 }
723 prom_getproperty(sdev->prom_node, "status", state, sizeof(state));
724 if(!strncmp(state, "disabled", 8))
725 return 0;
726
727 /*
728 * We cannot do sbus_ioremap here: it does request_region,
729 * which the generic floppy driver tries to do once again.
730 * But we must use the sdev resource values as they have
731 * had parent ranges applied.
732 */
733 sun_fdc = (struct sun_flpy_controller *)
734 (sdev->resource[0].start +
735 ((sdev->resource[0].flags & 0x1ffUL) << 32UL));
736
737 /* Last minute sanity check... */
738 if(sbus_readb(&sun_fdc->status1_82077) == 0xff) {
739 sun_fdc = (struct sun_flpy_controller *)-1;
740 return 0;
741 }
742
743 sun_fdops.fd_inb = sun_82077_fd_inb;
744 sun_fdops.fd_outb = sun_82077_fd_outb;
745
746 can_use_virtual_dma = use_virtual_dma = 1;
747 sun_fdops.fd_enable_dma = sun_fd_enable_dma;
748 sun_fdops.fd_disable_dma = sun_fd_disable_dma;
749 sun_fdops.fd_set_dma_mode = sun_fd_set_dma_mode;
750 sun_fdops.fd_set_dma_addr = sun_fd_set_dma_addr;
751 sun_fdops.fd_set_dma_count = sun_fd_set_dma_count;
752 sun_fdops.get_dma_residue = sun_get_dma_residue;
753
754 sun_fdops.fd_request_irq = sun_fd_request_irq;
755 sun_fdops.fd_free_irq = sun_fd_free_irq;
756
757 sun_fdops.fd_eject = sun_fd_eject;
758
759 fdc_status = (unsigned long) &sun_fdc->status_82077;
760
761 /* Success... */
762 allowed_drive_mask = 0x01;
763 sun_floppy_types[0] = 4;
764 sun_floppy_types[1] = 0;
765
766 return sun_floppy_types[0];
767}
768
769#define EXTRA_FLOPPY_PARAMS
770
771static DEFINE_SPINLOCK(dma_spin_lock);
772
773#define claim_dma_lock() \
774({ unsigned long flags; \
775 spin_lock_irqsave(&dma_spin_lock, flags); \
776 flags; \
777})
778
779#define release_dma_lock(__flags) \
780 spin_unlock_irqrestore(&dma_spin_lock, __flags);
781
782#endif /* !(__ASM_SPARC64_FLOPPY_H) */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-19 06:06:16 -0500