diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-27 21:17:02 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-27 21:17:02 -0400 |
commit | 9e4db1c3eed55c22328d8022c2c80adb3093833f (patch) | |
tree | 9643545e6bd182f1d3e19942f590a6a1e3198320 /arch/arm/mach-rpc | |
parent | de8856d2c11f562c60ed9340a83db4a4f829a6e6 (diff) | |
parent | aae528d9a8ad79d4b21b1b723abc9447fdb0d200 (diff) |
Merge branch 'platforms' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM platform updates from Russell King:
"This covers platform stuff for platforms I have a direct interest in
(iow, I have the hardware). Essentially:
- as we no longer support any other Acorn platforms other than RiscPC
anymore, we can collect all that code into mach-rpc.
- convert Acorn expansion card stuff to use IRQ allocation functions,
and get rid of NO_IRQ from there.
- cleanups to the ebsa110 platform to move some private stuff out of
its header files.
- large amount of SA11x0 updates:
- conversion of private DMA implementation to DMA engine support
(this actually gives us greater flexibility in drivers over the old
API.)
- re-worked ucb1x00 updates - convert to genirq, remove sa11x0
dependencies, fix various minor issues
- move platform specific sa11x0 framebuffer data into platform files
in arch/arm instead of keeping this in the driver itself
- update sa11x0 IrDA driver for DMA engine, and allow it to use DMA
for SIR transmissions as well as FIR
- rework sa1111 support for genirq, and irq allocation
- fix sa1111 IRQ support so it works again
- use sparse IRQ support
After this, I have one more pull request remaining from my current
set, which I think is going to be the most problematical as it
generates 8 conflicts."
Fixed up the trivial conflict in arch/arm/mach-rpc/Makefile as per
Russell.
* 'platforms' of git://git.linaro.org/people/rmk/linux-arm: (125 commits)
ARM: 7343/1: sa11x0: convert to sparse IRQ
ARM: 7342/2: sa1100: prepare for sparse irq conversion
ARM: 7341/1: input: prepare jornada720 keyboard and ts for sa11x0 sparse irq
ARM: 7340/1: rtc: sa1100: include mach/irqs.h instead of asm/irq.h
ARM: sa11x0: remove unused DMA controller definitions
ARM: sa11x0: remove old SoC private DMA driver
USB: sa1111: add hcd .reset method
USB: sa1111: add OHCI shutdown methods
USB: sa1111: reorganize ohci-sa1111.c
USB: sa1111: get rid of nasty printk(KERN_DEBUG "%s: ...", __FILE__)
USB: sa1111: sparse and checkpatch cleanups
ARM: sa11x0: don't static map sa1111
ARM: sa1111: use dev_err() rather than printk()
ARM: sa1111: cleanup sub-device registration and unregistration
ARM: sa1111: only setup DMA for DMA capable devices
ARM: sa1111: register sa1111 devices with dmabounce in bus notifier
ARM: sa1111: move USB interface register definitions to ohci-sa1111.c
ARM: sa1111: move PCMCIA interface register definitions to sa1111_generic.c
ARM: sa1111: move PS/2 interface register definitions to sa1111p2.c
ARM: sa1111: delete unused physical GPIO register definitions
...
Diffstat (limited to 'arch/arm/mach-rpc')
-rw-r--r-- | arch/arm/mach-rpc/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/mach-rpc/ecard.c | 1138 | ||||
-rw-r--r-- | arch/arm/mach-rpc/ecard.h | 69 | ||||
-rw-r--r-- | arch/arm/mach-rpc/include/mach/irqs.h | 2 | ||||
-rw-r--r-- | arch/arm/mach-rpc/riscpc.c | 45 | ||||
-rw-r--r-- | arch/arm/mach-rpc/time.c | 95 |
6 files changed, 1318 insertions, 33 deletions
diff --git a/arch/arm/mach-rpc/Makefile b/arch/arm/mach-rpc/Makefile index dfa405c0cfde..992e28b4ae9a 100644 --- a/arch/arm/mach-rpc/Makefile +++ b/arch/arm/mach-rpc/Makefile | |||
@@ -4,7 +4,7 @@ | |||
4 | 4 | ||
5 | # Object file lists. | 5 | # Object file lists. |
6 | 6 | ||
7 | obj-y := dma.o fiq.o irq.o riscpc.o | 7 | obj-y := dma.o ecard.o fiq.o irq.o riscpc.o time.o |
8 | obj-m := | 8 | obj-m := |
9 | obj-n := | 9 | obj-n := |
10 | obj- := | 10 | obj- := |
diff --git a/arch/arm/mach-rpc/ecard.c b/arch/arm/mach-rpc/ecard.c new file mode 100644 index 000000000000..b91bc87b3dcf --- /dev/null +++ b/arch/arm/mach-rpc/ecard.c | |||
@@ -0,0 +1,1138 @@ | |||
1 | /* | ||
2 | * linux/arch/arm/kernel/ecard.c | ||
3 | * | ||
4 | * Copyright 1995-2001 Russell King | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License version 2 as | ||
8 | * published by the Free Software Foundation. | ||
9 | * | ||
10 | * Find all installed expansion cards, and handle interrupts from them. | ||
11 | * | ||
12 | * Created from information from Acorns RiscOS3 PRMs | ||
13 | * | ||
14 | * 08-Dec-1996 RMK Added code for the 9'th expansion card - the ether | ||
15 | * podule slot. | ||
16 | * 06-May-1997 RMK Added blacklist for cards whose loader doesn't work. | ||
17 | * 12-Sep-1997 RMK Created new handling of interrupt enables/disables | ||
18 | * - cards can now register their own routine to control | ||
19 | * interrupts (recommended). | ||
20 | * 29-Sep-1997 RMK Expansion card interrupt hardware not being re-enabled | ||
21 | * on reset from Linux. (Caused cards not to respond | ||
22 | * under RiscOS without hard reset). | ||
23 | * 15-Feb-1998 RMK Added DMA support | ||
24 | * 12-Sep-1998 RMK Added EASI support | ||
25 | * 10-Jan-1999 RMK Run loaders in a simulated RISC OS environment. | ||
26 | * 17-Apr-1999 RMK Support for EASI Type C cycles. | ||
27 | */ | ||
28 | #define ECARD_C | ||
29 | |||
30 | #include <linux/module.h> | ||
31 | #include <linux/kernel.h> | ||
32 | #include <linux/types.h> | ||
33 | #include <linux/sched.h> | ||
34 | #include <linux/interrupt.h> | ||
35 | #include <linux/completion.h> | ||
36 | #include <linux/reboot.h> | ||
37 | #include <linux/mm.h> | ||
38 | #include <linux/slab.h> | ||
39 | #include <linux/proc_fs.h> | ||
40 | #include <linux/seq_file.h> | ||
41 | #include <linux/device.h> | ||
42 | #include <linux/init.h> | ||
43 | #include <linux/mutex.h> | ||
44 | #include <linux/kthread.h> | ||
45 | #include <linux/irq.h> | ||
46 | #include <linux/io.h> | ||
47 | |||
48 | #include <asm/dma.h> | ||
49 | #include <asm/ecard.h> | ||
50 | #include <mach/hardware.h> | ||
51 | #include <asm/irq.h> | ||
52 | #include <asm/mmu_context.h> | ||
53 | #include <asm/mach/irq.h> | ||
54 | #include <asm/tlbflush.h> | ||
55 | |||
56 | #include "ecard.h" | ||
57 | |||
58 | struct ecard_request { | ||
59 | void (*fn)(struct ecard_request *); | ||
60 | ecard_t *ec; | ||
61 | unsigned int address; | ||
62 | unsigned int length; | ||
63 | unsigned int use_loader; | ||
64 | void *buffer; | ||
65 | struct completion *complete; | ||
66 | }; | ||
67 | |||
68 | struct expcard_blacklist { | ||
69 | unsigned short manufacturer; | ||
70 | unsigned short product; | ||
71 | const char *type; | ||
72 | }; | ||
73 | |||
74 | static ecard_t *cards; | ||
75 | static ecard_t *slot_to_expcard[MAX_ECARDS]; | ||
76 | static unsigned int ectcr; | ||
77 | |||
78 | /* List of descriptions of cards which don't have an extended | ||
79 | * identification, or chunk directories containing a description. | ||
80 | */ | ||
81 | static struct expcard_blacklist __initdata blacklist[] = { | ||
82 | { MANU_ACORN, PROD_ACORN_ETHER1, "Acorn Ether1" } | ||
83 | }; | ||
84 | |||
85 | asmlinkage extern int | ||
86 | ecard_loader_reset(unsigned long base, loader_t loader); | ||
87 | asmlinkage extern int | ||
88 | ecard_loader_read(int off, unsigned long base, loader_t loader); | ||
89 | |||
90 | static inline unsigned short ecard_getu16(unsigned char *v) | ||
91 | { | ||
92 | return v[0] | v[1] << 8; | ||
93 | } | ||
94 | |||
95 | static inline signed long ecard_gets24(unsigned char *v) | ||
96 | { | ||
97 | return v[0] | v[1] << 8 | v[2] << 16 | ((v[2] & 0x80) ? 0xff000000 : 0); | ||
98 | } | ||
99 | |||
100 | static inline ecard_t *slot_to_ecard(unsigned int slot) | ||
101 | { | ||
102 | return slot < MAX_ECARDS ? slot_to_expcard[slot] : NULL; | ||
103 | } | ||
104 | |||
105 | /* ===================== Expansion card daemon ======================== */ | ||
106 | /* | ||
107 | * Since the loader programs on the expansion cards need to be run | ||
108 | * in a specific environment, create a separate task with this | ||
109 | * environment up, and pass requests to this task as and when we | ||
110 | * need to. | ||
111 | * | ||
112 | * This should allow 99% of loaders to be called from Linux. | ||
113 | * | ||
114 | * From a security standpoint, we trust the card vendors. This | ||
115 | * may be a misplaced trust. | ||
116 | */ | ||
117 | static void ecard_task_reset(struct ecard_request *req) | ||
118 | { | ||
119 | struct expansion_card *ec = req->ec; | ||
120 | struct resource *res; | ||
121 | |||
122 | res = ec->slot_no == 8 | ||
123 | ? &ec->resource[ECARD_RES_MEMC] | ||
124 | : ec->easi | ||
125 | ? &ec->resource[ECARD_RES_EASI] | ||
126 | : &ec->resource[ECARD_RES_IOCSYNC]; | ||
127 | |||
128 | ecard_loader_reset(res->start, ec->loader); | ||
129 | } | ||
130 | |||
131 | static void ecard_task_readbytes(struct ecard_request *req) | ||
132 | { | ||
133 | struct expansion_card *ec = req->ec; | ||
134 | unsigned char *buf = req->buffer; | ||
135 | unsigned int len = req->length; | ||
136 | unsigned int off = req->address; | ||
137 | |||
138 | if (ec->slot_no == 8) { | ||
139 | void __iomem *base = (void __iomem *) | ||
140 | ec->resource[ECARD_RES_MEMC].start; | ||
141 | |||
142 | /* | ||
143 | * The card maintains an index which increments the address | ||
144 | * into a 4096-byte page on each access. We need to keep | ||
145 | * track of the counter. | ||
146 | */ | ||
147 | static unsigned int index; | ||
148 | unsigned int page; | ||
149 | |||
150 | page = (off >> 12) * 4; | ||
151 | if (page > 256 * 4) | ||
152 | return; | ||
153 | |||
154 | off &= 4095; | ||
155 | |||
156 | /* | ||
157 | * If we are reading offset 0, or our current index is | ||
158 | * greater than the offset, reset the hardware index counter. | ||
159 | */ | ||
160 | if (off == 0 || index > off) { | ||
161 | writeb(0, base); | ||
162 | index = 0; | ||
163 | } | ||
164 | |||
165 | /* | ||
166 | * Increment the hardware index counter until we get to the | ||
167 | * required offset. The read bytes are discarded. | ||
168 | */ | ||
169 | while (index < off) { | ||
170 | readb(base + page); | ||
171 | index += 1; | ||
172 | } | ||
173 | |||
174 | while (len--) { | ||
175 | *buf++ = readb(base + page); | ||
176 | index += 1; | ||
177 | } | ||
178 | } else { | ||
179 | unsigned long base = (ec->easi | ||
180 | ? &ec->resource[ECARD_RES_EASI] | ||
181 | : &ec->resource[ECARD_RES_IOCSYNC])->start; | ||
182 | void __iomem *pbase = (void __iomem *)base; | ||
183 | |||
184 | if (!req->use_loader || !ec->loader) { | ||
185 | off *= 4; | ||
186 | while (len--) { | ||
187 | *buf++ = readb(pbase + off); | ||
188 | off += 4; | ||
189 | } | ||
190 | } else { | ||
191 | while(len--) { | ||
192 | /* | ||
193 | * The following is required by some | ||
194 | * expansion card loader programs. | ||
195 | */ | ||
196 | *(unsigned long *)0x108 = 0; | ||
197 | *buf++ = ecard_loader_read(off++, base, | ||
198 | ec->loader); | ||
199 | } | ||
200 | } | ||
201 | } | ||
202 | |||
203 | } | ||
204 | |||
205 | static DECLARE_WAIT_QUEUE_HEAD(ecard_wait); | ||
206 | static struct ecard_request *ecard_req; | ||
207 | static DEFINE_MUTEX(ecard_mutex); | ||
208 | |||
209 | /* | ||
210 | * Set up the expansion card daemon's page tables. | ||
211 | */ | ||
212 | static void ecard_init_pgtables(struct mm_struct *mm) | ||
213 | { | ||
214 | struct vm_area_struct vma; | ||
215 | |||
216 | /* We want to set up the page tables for the following mapping: | ||
217 | * Virtual Physical | ||
218 | * 0x03000000 0x03000000 | ||
219 | * 0x03010000 unmapped | ||
220 | * 0x03210000 0x03210000 | ||
221 | * 0x03400000 unmapped | ||
222 | * 0x08000000 0x08000000 | ||
223 | * 0x10000000 unmapped | ||
224 | * | ||
225 | * FIXME: we don't follow this 100% yet. | ||
226 | */ | ||
227 | pgd_t *src_pgd, *dst_pgd; | ||
228 | |||
229 | src_pgd = pgd_offset(mm, (unsigned long)IO_BASE); | ||
230 | dst_pgd = pgd_offset(mm, IO_START); | ||
231 | |||
232 | memcpy(dst_pgd, src_pgd, sizeof(pgd_t) * (IO_SIZE / PGDIR_SIZE)); | ||
233 | |||
234 | src_pgd = pgd_offset(mm, (unsigned long)EASI_BASE); | ||
235 | dst_pgd = pgd_offset(mm, EASI_START); | ||
236 | |||
237 | memcpy(dst_pgd, src_pgd, sizeof(pgd_t) * (EASI_SIZE / PGDIR_SIZE)); | ||
238 | |||
239 | vma.vm_flags = VM_EXEC; | ||
240 | vma.vm_mm = mm; | ||
241 | |||
242 | flush_tlb_range(&vma, IO_START, IO_START + IO_SIZE); | ||
243 | flush_tlb_range(&vma, EASI_START, EASI_START + EASI_SIZE); | ||
244 | } | ||
245 | |||
246 | static int ecard_init_mm(void) | ||
247 | { | ||
248 | struct mm_struct * mm = mm_alloc(); | ||
249 | struct mm_struct *active_mm = current->active_mm; | ||
250 | |||
251 | if (!mm) | ||
252 | return -ENOMEM; | ||
253 | |||
254 | current->mm = mm; | ||
255 | current->active_mm = mm; | ||
256 | activate_mm(active_mm, mm); | ||
257 | mmdrop(active_mm); | ||
258 | ecard_init_pgtables(mm); | ||
259 | return 0; | ||
260 | } | ||
261 | |||
262 | static int | ||
263 | ecard_task(void * unused) | ||
264 | { | ||
265 | /* | ||
266 | * Allocate a mm. We're not a lazy-TLB kernel task since we need | ||
267 | * to set page table entries where the user space would be. Note | ||
268 | * that this also creates the page tables. Failure is not an | ||
269 | * option here. | ||
270 | */ | ||
271 | if (ecard_init_mm()) | ||
272 | panic("kecardd: unable to alloc mm\n"); | ||
273 | |||
274 | while (1) { | ||
275 | struct ecard_request *req; | ||
276 | |||
277 | wait_event_interruptible(ecard_wait, ecard_req != NULL); | ||
278 | |||
279 | req = xchg(&ecard_req, NULL); | ||
280 | if (req != NULL) { | ||
281 | req->fn(req); | ||
282 | complete(req->complete); | ||
283 | } | ||
284 | } | ||
285 | } | ||
286 | |||
287 | /* | ||
288 | * Wake the expansion card daemon to action our request. | ||
289 | * | ||
290 | * FIXME: The test here is not sufficient to detect if the | ||
291 | * kcardd is running. | ||
292 | */ | ||
293 | static void ecard_call(struct ecard_request *req) | ||
294 | { | ||
295 | DECLARE_COMPLETION_ONSTACK(completion); | ||
296 | |||
297 | req->complete = &completion; | ||
298 | |||
299 | mutex_lock(&ecard_mutex); | ||
300 | ecard_req = req; | ||
301 | wake_up(&ecard_wait); | ||
302 | |||
303 | /* | ||
304 | * Now wait for kecardd to run. | ||
305 | */ | ||
306 | wait_for_completion(&completion); | ||
307 | mutex_unlock(&ecard_mutex); | ||
308 | } | ||
309 | |||
310 | /* ======================= Mid-level card control ===================== */ | ||
311 | |||
312 | static void | ||
313 | ecard_readbytes(void *addr, ecard_t *ec, int off, int len, int useld) | ||
314 | { | ||
315 | struct ecard_request req; | ||
316 | |||
317 | req.fn = ecard_task_readbytes; | ||
318 | req.ec = ec; | ||
319 | req.address = off; | ||
320 | req.length = len; | ||
321 | req.use_loader = useld; | ||
322 | req.buffer = addr; | ||
323 | |||
324 | ecard_call(&req); | ||
325 | } | ||
326 | |||
327 | int ecard_readchunk(struct in_chunk_dir *cd, ecard_t *ec, int id, int num) | ||
328 | { | ||
329 | struct ex_chunk_dir excd; | ||
330 | int index = 16; | ||
331 | int useld = 0; | ||
332 | |||
333 | if (!ec->cid.cd) | ||
334 | return 0; | ||
335 | |||
336 | while(1) { | ||
337 | ecard_readbytes(&excd, ec, index, 8, useld); | ||
338 | index += 8; | ||
339 | if (c_id(&excd) == 0) { | ||
340 | if (!useld && ec->loader) { | ||
341 | useld = 1; | ||
342 | index = 0; | ||
343 | continue; | ||
344 | } | ||
345 | return 0; | ||
346 | } | ||
347 | if (c_id(&excd) == 0xf0) { /* link */ | ||
348 | index = c_start(&excd); | ||
349 | continue; | ||
350 | } | ||
351 | if (c_id(&excd) == 0x80) { /* loader */ | ||
352 | if (!ec->loader) { | ||
353 | ec->loader = kmalloc(c_len(&excd), | ||
354 | GFP_KERNEL); | ||
355 | if (ec->loader) | ||
356 | ecard_readbytes(ec->loader, ec, | ||
357 | (int)c_start(&excd), | ||
358 | c_len(&excd), useld); | ||
359 | else | ||
360 | return 0; | ||
361 | } | ||
362 | continue; | ||
363 | } | ||
364 | if (c_id(&excd) == id && num-- == 0) | ||
365 | break; | ||
366 | } | ||
367 | |||
368 | if (c_id(&excd) & 0x80) { | ||
369 | switch (c_id(&excd) & 0x70) { | ||
370 | case 0x70: | ||
371 | ecard_readbytes((unsigned char *)excd.d.string, ec, | ||
372 | (int)c_start(&excd), c_len(&excd), | ||
373 | useld); | ||
374 | break; | ||
375 | case 0x00: | ||
376 | break; | ||
377 | } | ||
378 | } | ||
379 | cd->start_offset = c_start(&excd); | ||
380 | memcpy(cd->d.string, excd.d.string, 256); | ||
381 | return 1; | ||
382 | } | ||
383 | |||
384 | /* ======================= Interrupt control ============================ */ | ||
385 | |||
386 | static void ecard_def_irq_enable(ecard_t *ec, int irqnr) | ||
387 | { | ||
388 | } | ||
389 | |||
390 | static void ecard_def_irq_disable(ecard_t *ec, int irqnr) | ||
391 | { | ||
392 | } | ||
393 | |||
394 | static int ecard_def_irq_pending(ecard_t *ec) | ||
395 | { | ||
396 | return !ec->irqmask || readb(ec->irqaddr) & ec->irqmask; | ||
397 | } | ||
398 | |||
399 | static void ecard_def_fiq_enable(ecard_t *ec, int fiqnr) | ||
400 | { | ||
401 | panic("ecard_def_fiq_enable called - impossible"); | ||
402 | } | ||
403 | |||
404 | static void ecard_def_fiq_disable(ecard_t *ec, int fiqnr) | ||
405 | { | ||
406 | panic("ecard_def_fiq_disable called - impossible"); | ||
407 | } | ||
408 | |||
409 | static int ecard_def_fiq_pending(ecard_t *ec) | ||
410 | { | ||
411 | return !ec->fiqmask || readb(ec->fiqaddr) & ec->fiqmask; | ||
412 | } | ||
413 | |||
414 | static expansioncard_ops_t ecard_default_ops = { | ||
415 | ecard_def_irq_enable, | ||
416 | ecard_def_irq_disable, | ||
417 | ecard_def_irq_pending, | ||
418 | ecard_def_fiq_enable, | ||
419 | ecard_def_fiq_disable, | ||
420 | ecard_def_fiq_pending | ||
421 | }; | ||
422 | |||
423 | /* | ||
424 | * Enable and disable interrupts from expansion cards. | ||
425 | * (interrupts are disabled for these functions). | ||
426 | * | ||
427 | * They are not meant to be called directly, but via enable/disable_irq. | ||
428 | */ | ||
429 | static void ecard_irq_unmask(struct irq_data *d) | ||
430 | { | ||
431 | ecard_t *ec = irq_data_get_irq_chip_data(d); | ||
432 | |||
433 | if (ec) { | ||
434 | if (!ec->ops) | ||
435 | ec->ops = &ecard_default_ops; | ||
436 | |||
437 | if (ec->claimed && ec->ops->irqenable) | ||
438 | ec->ops->irqenable(ec, d->irq); | ||
439 | else | ||
440 | printk(KERN_ERR "ecard: rejecting request to " | ||
441 | "enable IRQs for %d\n", d->irq); | ||
442 | } | ||
443 | } | ||
444 | |||
445 | static void ecard_irq_mask(struct irq_data *d) | ||
446 | { | ||
447 | ecard_t *ec = irq_data_get_irq_chip_data(d); | ||
448 | |||
449 | if (ec) { | ||
450 | if (!ec->ops) | ||
451 | ec->ops = &ecard_default_ops; | ||
452 | |||
453 | if (ec->ops && ec->ops->irqdisable) | ||
454 | ec->ops->irqdisable(ec, d->irq); | ||
455 | } | ||
456 | } | ||
457 | |||
458 | static struct irq_chip ecard_chip = { | ||
459 | .name = "ECARD", | ||
460 | .irq_ack = ecard_irq_mask, | ||
461 | .irq_mask = ecard_irq_mask, | ||
462 | .irq_unmask = ecard_irq_unmask, | ||
463 | }; | ||
464 | |||
465 | void ecard_enablefiq(unsigned int fiqnr) | ||
466 | { | ||
467 | ecard_t *ec = slot_to_ecard(fiqnr); | ||
468 | |||
469 | if (ec) { | ||
470 | if (!ec->ops) | ||
471 | ec->ops = &ecard_default_ops; | ||
472 | |||
473 | if (ec->claimed && ec->ops->fiqenable) | ||
474 | ec->ops->fiqenable(ec, fiqnr); | ||
475 | else | ||
476 | printk(KERN_ERR "ecard: rejecting request to " | ||
477 | "enable FIQs for %d\n", fiqnr); | ||
478 | } | ||
479 | } | ||
480 | |||
481 | void ecard_disablefiq(unsigned int fiqnr) | ||
482 | { | ||
483 | ecard_t *ec = slot_to_ecard(fiqnr); | ||
484 | |||
485 | if (ec) { | ||
486 | if (!ec->ops) | ||
487 | ec->ops = &ecard_default_ops; | ||
488 | |||
489 | if (ec->ops->fiqdisable) | ||
490 | ec->ops->fiqdisable(ec, fiqnr); | ||
491 | } | ||
492 | } | ||
493 | |||
494 | static void ecard_dump_irq_state(void) | ||
495 | { | ||
496 | ecard_t *ec; | ||
497 | |||
498 | printk("Expansion card IRQ state:\n"); | ||
499 | |||
500 | for (ec = cards; ec; ec = ec->next) { | ||
501 | if (ec->slot_no == 8) | ||
502 | continue; | ||
503 | |||
504 | printk(" %d: %sclaimed, ", | ||
505 | ec->slot_no, ec->claimed ? "" : "not "); | ||
506 | |||
507 | if (ec->ops && ec->ops->irqpending && | ||
508 | ec->ops != &ecard_default_ops) | ||
509 | printk("irq %spending\n", | ||
510 | ec->ops->irqpending(ec) ? "" : "not "); | ||
511 | else | ||
512 | printk("irqaddr %p, mask = %02X, status = %02X\n", | ||
513 | ec->irqaddr, ec->irqmask, readb(ec->irqaddr)); | ||
514 | } | ||
515 | } | ||
516 | |||
517 | static void ecard_check_lockup(struct irq_desc *desc) | ||
518 | { | ||
519 | static unsigned long last; | ||
520 | static int lockup; | ||
521 | |||
522 | /* | ||
523 | * If the timer interrupt has not run since the last million | ||
524 | * unrecognised expansion card interrupts, then there is | ||
525 | * something seriously wrong. Disable the expansion card | ||
526 | * interrupts so at least we can continue. | ||
527 | * | ||
528 | * Maybe we ought to start a timer to re-enable them some time | ||
529 | * later? | ||
530 | */ | ||
531 | if (last == jiffies) { | ||
532 | lockup += 1; | ||
533 | if (lockup > 1000000) { | ||
534 | printk(KERN_ERR "\nInterrupt lockup detected - " | ||
535 | "disabling all expansion card interrupts\n"); | ||
536 | |||
537 | desc->irq_data.chip->irq_mask(&desc->irq_data); | ||
538 | ecard_dump_irq_state(); | ||
539 | } | ||
540 | } else | ||
541 | lockup = 0; | ||
542 | |||
543 | /* | ||
544 | * If we did not recognise the source of this interrupt, | ||
545 | * warn the user, but don't flood the user with these messages. | ||
546 | */ | ||
547 | if (!last || time_after(jiffies, last + 5*HZ)) { | ||
548 | last = jiffies; | ||
549 | printk(KERN_WARNING "Unrecognised interrupt from backplane\n"); | ||
550 | ecard_dump_irq_state(); | ||
551 | } | ||
552 | } | ||
553 | |||
554 | static void | ||
555 | ecard_irq_handler(unsigned int irq, struct irq_desc *desc) | ||
556 | { | ||
557 | ecard_t *ec; | ||
558 | int called = 0; | ||
559 | |||
560 | desc->irq_data.chip->irq_mask(&desc->irq_data); | ||
561 | for (ec = cards; ec; ec = ec->next) { | ||
562 | int pending; | ||
563 | |||
564 | if (!ec->claimed || !ec->irq || ec->slot_no == 8) | ||
565 | continue; | ||
566 | |||
567 | if (ec->ops && ec->ops->irqpending) | ||
568 | pending = ec->ops->irqpending(ec); | ||
569 | else | ||
570 | pending = ecard_default_ops.irqpending(ec); | ||
571 | |||
572 | if (pending) { | ||
573 | generic_handle_irq(ec->irq); | ||
574 | called ++; | ||
575 | } | ||
576 | } | ||
577 | desc->irq_data.chip->irq_unmask(&desc->irq_data); | ||
578 | |||
579 | if (called == 0) | ||
580 | ecard_check_lockup(desc); | ||
581 | } | ||
582 | |||
583 | static void __iomem *__ecard_address(ecard_t *ec, card_type_t type, card_speed_t speed) | ||
584 | { | ||
585 | void __iomem *address = NULL; | ||
586 | int slot = ec->slot_no; | ||
587 | |||
588 | if (ec->slot_no == 8) | ||
589 | return ECARD_MEMC8_BASE; | ||
590 | |||
591 | ectcr &= ~(1 << slot); | ||
592 | |||
593 | switch (type) { | ||
594 | case ECARD_MEMC: | ||
595 | if (slot < 4) | ||
596 | address = ECARD_MEMC_BASE + (slot << 14); | ||
597 | break; | ||
598 | |||
599 | case ECARD_IOC: | ||
600 | if (slot < 4) | ||
601 | address = ECARD_IOC_BASE + (slot << 14); | ||
602 | else | ||
603 | address = ECARD_IOC4_BASE + ((slot - 4) << 14); | ||
604 | if (address) | ||
605 | address += speed << 19; | ||
606 | break; | ||
607 | |||
608 | case ECARD_EASI: | ||
609 | address = ECARD_EASI_BASE + (slot << 24); | ||
610 | if (speed == ECARD_FAST) | ||
611 | ectcr |= 1 << slot; | ||
612 | break; | ||
613 | |||
614 | default: | ||
615 | break; | ||
616 | } | ||
617 | |||
618 | #ifdef IOMD_ECTCR | ||
619 | iomd_writeb(ectcr, IOMD_ECTCR); | ||
620 | #endif | ||
621 | return address; | ||
622 | } | ||
623 | |||
624 | static int ecard_prints(struct seq_file *m, ecard_t *ec) | ||
625 | { | ||
626 | seq_printf(m, " %d: %s ", ec->slot_no, ec->easi ? "EASI" : " "); | ||
627 | |||
628 | if (ec->cid.id == 0) { | ||
629 | struct in_chunk_dir incd; | ||
630 | |||
631 | seq_printf(m, "[%04X:%04X] ", | ||
632 | ec->cid.manufacturer, ec->cid.product); | ||
633 | |||
634 | if (!ec->card_desc && ec->cid.cd && | ||
635 | ecard_readchunk(&incd, ec, 0xf5, 0)) { | ||
636 | ec->card_desc = kmalloc(strlen(incd.d.string)+1, GFP_KERNEL); | ||
637 | |||
638 | if (ec->card_desc) | ||
639 | strcpy((char *)ec->card_desc, incd.d.string); | ||
640 | } | ||
641 | |||
642 | seq_printf(m, "%s\n", ec->card_desc ? ec->card_desc : "*unknown*"); | ||
643 | } else | ||
644 | seq_printf(m, "Simple card %d\n", ec->cid.id); | ||
645 | |||
646 | return 0; | ||
647 | } | ||
648 | |||
649 | static int ecard_devices_proc_show(struct seq_file *m, void *v) | ||
650 | { | ||
651 | ecard_t *ec = cards; | ||
652 | |||
653 | while (ec) { | ||
654 | ecard_prints(m, ec); | ||
655 | ec = ec->next; | ||
656 | } | ||
657 | return 0; | ||
658 | } | ||
659 | |||
660 | static int ecard_devices_proc_open(struct inode *inode, struct file *file) | ||
661 | { | ||
662 | return single_open(file, ecard_devices_proc_show, NULL); | ||
663 | } | ||
664 | |||
665 | static const struct file_operations bus_ecard_proc_fops = { | ||
666 | .owner = THIS_MODULE, | ||
667 | .open = ecard_devices_proc_open, | ||
668 | .read = seq_read, | ||
669 | .llseek = seq_lseek, | ||
670 | .release = single_release, | ||
671 | }; | ||
672 | |||
673 | static struct proc_dir_entry *proc_bus_ecard_dir = NULL; | ||
674 | |||
675 | static void ecard_proc_init(void) | ||
676 | { | ||
677 | proc_bus_ecard_dir = proc_mkdir("bus/ecard", NULL); | ||
678 | proc_create("devices", 0, proc_bus_ecard_dir, &bus_ecard_proc_fops); | ||
679 | } | ||
680 | |||
681 | #define ec_set_resource(ec,nr,st,sz) \ | ||
682 | do { \ | ||
683 | (ec)->resource[nr].name = dev_name(&ec->dev); \ | ||
684 | (ec)->resource[nr].start = st; \ | ||
685 | (ec)->resource[nr].end = (st) + (sz) - 1; \ | ||
686 | (ec)->resource[nr].flags = IORESOURCE_MEM; \ | ||
687 | } while (0) | ||
688 | |||
689 | static void __init ecard_free_card(struct expansion_card *ec) | ||
690 | { | ||
691 | int i; | ||
692 | |||
693 | for (i = 0; i < ECARD_NUM_RESOURCES; i++) | ||
694 | if (ec->resource[i].flags) | ||
695 | release_resource(&ec->resource[i]); | ||
696 | |||
697 | kfree(ec); | ||
698 | } | ||
699 | |||
700 | static struct expansion_card *__init ecard_alloc_card(int type, int slot) | ||
701 | { | ||
702 | struct expansion_card *ec; | ||
703 | unsigned long base; | ||
704 | int i; | ||
705 | |||
706 | ec = kzalloc(sizeof(ecard_t), GFP_KERNEL); | ||
707 | if (!ec) { | ||
708 | ec = ERR_PTR(-ENOMEM); | ||
709 | goto nomem; | ||
710 | } | ||
711 | |||
712 | ec->slot_no = slot; | ||
713 | ec->easi = type == ECARD_EASI; | ||
714 | ec->irq = 0; | ||
715 | ec->fiq = 0; | ||
716 | ec->dma = NO_DMA; | ||
717 | ec->ops = &ecard_default_ops; | ||
718 | |||
719 | dev_set_name(&ec->dev, "ecard%d", slot); | ||
720 | ec->dev.parent = NULL; | ||
721 | ec->dev.bus = &ecard_bus_type; | ||
722 | ec->dev.dma_mask = &ec->dma_mask; | ||
723 | ec->dma_mask = (u64)0xffffffff; | ||
724 | ec->dev.coherent_dma_mask = ec->dma_mask; | ||
725 | |||
726 | if (slot < 4) { | ||
727 | ec_set_resource(ec, ECARD_RES_MEMC, | ||
728 | PODSLOT_MEMC_BASE + (slot << 14), | ||
729 | PODSLOT_MEMC_SIZE); | ||
730 | base = PODSLOT_IOC0_BASE + (slot << 14); | ||
731 | } else | ||
732 | base = PODSLOT_IOC4_BASE + ((slot - 4) << 14); | ||
733 | |||
734 | #ifdef CONFIG_ARCH_RPC | ||
735 | if (slot < 8) { | ||
736 | ec_set_resource(ec, ECARD_RES_EASI, | ||
737 | PODSLOT_EASI_BASE + (slot << 24), | ||
738 | PODSLOT_EASI_SIZE); | ||
739 | } | ||
740 | |||
741 | if (slot == 8) { | ||
742 | ec_set_resource(ec, ECARD_RES_MEMC, NETSLOT_BASE, NETSLOT_SIZE); | ||
743 | } else | ||
744 | #endif | ||
745 | |||
746 | for (i = 0; i <= ECARD_RES_IOCSYNC - ECARD_RES_IOCSLOW; i++) | ||
747 | ec_set_resource(ec, i + ECARD_RES_IOCSLOW, | ||
748 | base + (i << 19), PODSLOT_IOC_SIZE); | ||
749 | |||
750 | for (i = 0; i < ECARD_NUM_RESOURCES; i++) { | ||
751 | if (ec->resource[i].flags && | ||
752 | request_resource(&iomem_resource, &ec->resource[i])) { | ||
753 | dev_err(&ec->dev, "resource(s) not available\n"); | ||
754 | ec->resource[i].end -= ec->resource[i].start; | ||
755 | ec->resource[i].start = 0; | ||
756 | ec->resource[i].flags = 0; | ||
757 | } | ||
758 | } | ||
759 | |||
760 | nomem: | ||
761 | return ec; | ||
762 | } | ||
763 | |||
764 | static ssize_t ecard_show_irq(struct device *dev, struct device_attribute *attr, char *buf) | ||
765 | { | ||
766 | struct expansion_card *ec = ECARD_DEV(dev); | ||
767 | return sprintf(buf, "%u\n", ec->irq); | ||
768 | } | ||
769 | |||
770 | static ssize_t ecard_show_dma(struct device *dev, struct device_attribute *attr, char *buf) | ||
771 | { | ||
772 | struct expansion_card *ec = ECARD_DEV(dev); | ||
773 | return sprintf(buf, "%u\n", ec->dma); | ||
774 | } | ||
775 | |||
776 | static ssize_t ecard_show_resources(struct device *dev, struct device_attribute *attr, char *buf) | ||
777 | { | ||
778 | struct expansion_card *ec = ECARD_DEV(dev); | ||
779 | char *str = buf; | ||
780 | int i; | ||
781 | |||
782 | for (i = 0; i < ECARD_NUM_RESOURCES; i++) | ||
783 | str += sprintf(str, "%08x %08x %08lx\n", | ||
784 | ec->resource[i].start, | ||
785 | ec->resource[i].end, | ||
786 | ec->resource[i].flags); | ||
787 | |||
788 | return str - buf; | ||
789 | } | ||
790 | |||
791 | static ssize_t ecard_show_vendor(struct device *dev, struct device_attribute *attr, char *buf) | ||
792 | { | ||
793 | struct expansion_card *ec = ECARD_DEV(dev); | ||
794 | return sprintf(buf, "%u\n", ec->cid.manufacturer); | ||
795 | } | ||
796 | |||
797 | static ssize_t ecard_show_device(struct device *dev, struct device_attribute *attr, char *buf) | ||
798 | { | ||
799 | struct expansion_card *ec = ECARD_DEV(dev); | ||
800 | return sprintf(buf, "%u\n", ec->cid.product); | ||
801 | } | ||
802 | |||
803 | static ssize_t ecard_show_type(struct device *dev, struct device_attribute *attr, char *buf) | ||
804 | { | ||
805 | struct expansion_card *ec = ECARD_DEV(dev); | ||
806 | return sprintf(buf, "%s\n", ec->easi ? "EASI" : "IOC"); | ||
807 | } | ||
808 | |||
809 | static struct device_attribute ecard_dev_attrs[] = { | ||
810 | __ATTR(device, S_IRUGO, ecard_show_device, NULL), | ||
811 | __ATTR(dma, S_IRUGO, ecard_show_dma, NULL), | ||
812 | __ATTR(irq, S_IRUGO, ecard_show_irq, NULL), | ||
813 | __ATTR(resource, S_IRUGO, ecard_show_resources, NULL), | ||
814 | __ATTR(type, S_IRUGO, ecard_show_type, NULL), | ||
815 | __ATTR(vendor, S_IRUGO, ecard_show_vendor, NULL), | ||
816 | __ATTR_NULL, | ||
817 | }; | ||
818 | |||
819 | |||
820 | int ecard_request_resources(struct expansion_card *ec) | ||
821 | { | ||
822 | int i, err = 0; | ||
823 | |||
824 | for (i = 0; i < ECARD_NUM_RESOURCES; i++) { | ||
825 | if (ecard_resource_end(ec, i) && | ||
826 | !request_mem_region(ecard_resource_start(ec, i), | ||
827 | ecard_resource_len(ec, i), | ||
828 | ec->dev.driver->name)) { | ||
829 | err = -EBUSY; | ||
830 | break; | ||
831 | } | ||
832 | } | ||
833 | |||
834 | if (err) { | ||
835 | while (i--) | ||
836 | if (ecard_resource_end(ec, i)) | ||
837 | release_mem_region(ecard_resource_start(ec, i), | ||
838 | ecard_resource_len(ec, i)); | ||
839 | } | ||
840 | return err; | ||
841 | } | ||
842 | EXPORT_SYMBOL(ecard_request_resources); | ||
843 | |||
844 | void ecard_release_resources(struct expansion_card *ec) | ||
845 | { | ||
846 | int i; | ||
847 | |||
848 | for (i = 0; i < ECARD_NUM_RESOURCES; i++) | ||
849 | if (ecard_resource_end(ec, i)) | ||
850 | release_mem_region(ecard_resource_start(ec, i), | ||
851 | ecard_resource_len(ec, i)); | ||
852 | } | ||
853 | EXPORT_SYMBOL(ecard_release_resources); | ||
854 | |||
855 | void ecard_setirq(struct expansion_card *ec, const struct expansion_card_ops *ops, void *irq_data) | ||
856 | { | ||
857 | ec->irq_data = irq_data; | ||
858 | barrier(); | ||
859 | ec->ops = ops; | ||
860 | } | ||
861 | EXPORT_SYMBOL(ecard_setirq); | ||
862 | |||
863 | void __iomem *ecardm_iomap(struct expansion_card *ec, unsigned int res, | ||
864 | unsigned long offset, unsigned long maxsize) | ||
865 | { | ||
866 | unsigned long start = ecard_resource_start(ec, res); | ||
867 | unsigned long end = ecard_resource_end(ec, res); | ||
868 | |||
869 | if (offset > (end - start)) | ||
870 | return NULL; | ||
871 | |||
872 | start += offset; | ||
873 | if (maxsize && end - start > maxsize) | ||
874 | end = start + maxsize; | ||
875 | |||
876 | return devm_ioremap(&ec->dev, start, end - start); | ||
877 | } | ||
878 | EXPORT_SYMBOL(ecardm_iomap); | ||
879 | |||
880 | /* | ||
881 | * Probe for an expansion card. | ||
882 | * | ||
883 | * If bit 1 of the first byte of the card is set, then the | ||
884 | * card does not exist. | ||
885 | */ | ||
886 | static int __init ecard_probe(int slot, unsigned irq, card_type_t type) | ||
887 | { | ||
888 | ecard_t **ecp; | ||
889 | ecard_t *ec; | ||
890 | struct ex_ecid cid; | ||
891 | void __iomem *addr; | ||
892 | int i, rc; | ||
893 | |||
894 | ec = ecard_alloc_card(type, slot); | ||
895 | if (IS_ERR(ec)) { | ||
896 | rc = PTR_ERR(ec); | ||
897 | goto nomem; | ||
898 | } | ||
899 | |||
900 | rc = -ENODEV; | ||
901 | if ((addr = __ecard_address(ec, type, ECARD_SYNC)) == NULL) | ||
902 | goto nodev; | ||
903 | |||
904 | cid.r_zero = 1; | ||
905 | ecard_readbytes(&cid, ec, 0, 16, 0); | ||
906 | if (cid.r_zero) | ||
907 | goto nodev; | ||
908 | |||
909 | ec->cid.id = cid.r_id; | ||
910 | ec->cid.cd = cid.r_cd; | ||
911 | ec->cid.is = cid.r_is; | ||
912 | ec->cid.w = cid.r_w; | ||
913 | ec->cid.manufacturer = ecard_getu16(cid.r_manu); | ||
914 | ec->cid.product = ecard_getu16(cid.r_prod); | ||
915 | ec->cid.country = cid.r_country; | ||
916 | ec->cid.irqmask = cid.r_irqmask; | ||
917 | ec->cid.irqoff = ecard_gets24(cid.r_irqoff); | ||
918 | ec->cid.fiqmask = cid.r_fiqmask; | ||
919 | ec->cid.fiqoff = ecard_gets24(cid.r_fiqoff); | ||
920 | ec->fiqaddr = | ||
921 | ec->irqaddr = addr; | ||
922 | |||
923 | if (ec->cid.is) { | ||
924 | ec->irqmask = ec->cid.irqmask; | ||
925 | ec->irqaddr += ec->cid.irqoff; | ||
926 | ec->fiqmask = ec->cid.fiqmask; | ||
927 | ec->fiqaddr += ec->cid.fiqoff; | ||
928 | } else { | ||
929 | ec->irqmask = 1; | ||
930 | ec->fiqmask = 4; | ||
931 | } | ||
932 | |||
933 | for (i = 0; i < ARRAY_SIZE(blacklist); i++) | ||
934 | if (blacklist[i].manufacturer == ec->cid.manufacturer && | ||
935 | blacklist[i].product == ec->cid.product) { | ||
936 | ec->card_desc = blacklist[i].type; | ||
937 | break; | ||
938 | } | ||
939 | |||
940 | ec->irq = irq; | ||
941 | |||
942 | /* | ||
943 | * hook the interrupt handlers | ||
944 | */ | ||
945 | if (slot < 8) { | ||
946 | irq_set_chip_and_handler(ec->irq, &ecard_chip, | ||
947 | handle_level_irq); | ||
948 | irq_set_chip_data(ec->irq, ec); | ||
949 | set_irq_flags(ec->irq, IRQF_VALID); | ||
950 | } | ||
951 | |||
952 | #ifdef CONFIG_ARCH_RPC | ||
953 | /* On RiscPC, only first two slots have DMA capability */ | ||
954 | if (slot < 2) | ||
955 | ec->dma = 2 + slot; | ||
956 | #endif | ||
957 | |||
958 | for (ecp = &cards; *ecp; ecp = &(*ecp)->next); | ||
959 | |||
960 | *ecp = ec; | ||
961 | slot_to_expcard[slot] = ec; | ||
962 | |||
963 | device_register(&ec->dev); | ||
964 | |||
965 | return 0; | ||
966 | |||
967 | nodev: | ||
968 | ecard_free_card(ec); | ||
969 | nomem: | ||
970 | return rc; | ||
971 | } | ||
972 | |||
973 | /* | ||
974 | * Initialise the expansion card system. | ||
975 | * Locate all hardware - interrupt management and | ||
976 | * actual cards. | ||
977 | */ | ||
978 | static int __init ecard_init(void) | ||
979 | { | ||
980 | struct task_struct *task; | ||
981 | int slot, irqbase; | ||
982 | |||
983 | irqbase = irq_alloc_descs(-1, 0, 8, -1); | ||
984 | if (irqbase < 0) | ||
985 | return irqbase; | ||
986 | |||
987 | task = kthread_run(ecard_task, NULL, "kecardd"); | ||
988 | if (IS_ERR(task)) { | ||
989 | printk(KERN_ERR "Ecard: unable to create kernel thread: %ld\n", | ||
990 | PTR_ERR(task)); | ||
991 | irq_free_descs(irqbase, 8); | ||
992 | return PTR_ERR(task); | ||
993 | } | ||
994 | |||
995 | printk("Probing expansion cards\n"); | ||
996 | |||
997 | for (slot = 0; slot < 8; slot ++) { | ||
998 | if (ecard_probe(slot, irqbase + slot, ECARD_EASI) == -ENODEV) | ||
999 | ecard_probe(slot, irqbase + slot, ECARD_IOC); | ||
1000 | } | ||
1001 | |||
1002 | ecard_probe(8, 11, ECARD_IOC); | ||
1003 | |||
1004 | irq_set_chained_handler(IRQ_EXPANSIONCARD, ecard_irq_handler); | ||
1005 | |||
1006 | ecard_proc_init(); | ||
1007 | |||
1008 | return 0; | ||
1009 | } | ||
1010 | |||
1011 | subsys_initcall(ecard_init); | ||
1012 | |||
1013 | /* | ||
1014 | * ECARD "bus" | ||
1015 | */ | ||
1016 | static const struct ecard_id * | ||
1017 | ecard_match_device(const struct ecard_id *ids, struct expansion_card *ec) | ||
1018 | { | ||
1019 | int i; | ||
1020 | |||
1021 | for (i = 0; ids[i].manufacturer != 65535; i++) | ||
1022 | if (ec->cid.manufacturer == ids[i].manufacturer && | ||
1023 | ec->cid.product == ids[i].product) | ||
1024 | return ids + i; | ||
1025 | |||
1026 | return NULL; | ||
1027 | } | ||
1028 | |||
1029 | static int ecard_drv_probe(struct device *dev) | ||
1030 | { | ||
1031 | struct expansion_card *ec = ECARD_DEV(dev); | ||
1032 | struct ecard_driver *drv = ECARD_DRV(dev->driver); | ||
1033 | const struct ecard_id *id; | ||
1034 | int ret; | ||
1035 | |||
1036 | id = ecard_match_device(drv->id_table, ec); | ||
1037 | |||
1038 | ec->claimed = 1; | ||
1039 | ret = drv->probe(ec, id); | ||
1040 | if (ret) | ||
1041 | ec->claimed = 0; | ||
1042 | return ret; | ||
1043 | } | ||
1044 | |||
1045 | static int ecard_drv_remove(struct device *dev) | ||
1046 | { | ||
1047 | struct expansion_card *ec = ECARD_DEV(dev); | ||
1048 | struct ecard_driver *drv = ECARD_DRV(dev->driver); | ||
1049 | |||
1050 | drv->remove(ec); | ||
1051 | ec->claimed = 0; | ||
1052 | |||
1053 | /* | ||
1054 | * Restore the default operations. We ensure that the | ||
1055 | * ops are set before we change the data. | ||
1056 | */ | ||
1057 | ec->ops = &ecard_default_ops; | ||
1058 | barrier(); | ||
1059 | ec->irq_data = NULL; | ||
1060 | |||
1061 | return 0; | ||
1062 | } | ||
1063 | |||
1064 | /* | ||
1065 | * Before rebooting, we must make sure that the expansion card is in a | ||
1066 | * sensible state, so it can be re-detected. This means that the first | ||
1067 | * page of the ROM must be visible. We call the expansion cards reset | ||
1068 | * handler, if any. | ||
1069 | */ | ||
1070 | static void ecard_drv_shutdown(struct device *dev) | ||
1071 | { | ||
1072 | struct expansion_card *ec = ECARD_DEV(dev); | ||
1073 | struct ecard_driver *drv = ECARD_DRV(dev->driver); | ||
1074 | struct ecard_request req; | ||
1075 | |||
1076 | if (dev->driver) { | ||
1077 | if (drv->shutdown) | ||
1078 | drv->shutdown(ec); | ||
1079 | ec->claimed = 0; | ||
1080 | } | ||
1081 | |||
1082 | /* | ||
1083 | * If this card has a loader, call the reset handler. | ||
1084 | */ | ||
1085 | if (ec->loader) { | ||
1086 | req.fn = ecard_task_reset; | ||
1087 | req.ec = ec; | ||
1088 | ecard_call(&req); | ||
1089 | } | ||
1090 | } | ||
1091 | |||
1092 | int ecard_register_driver(struct ecard_driver *drv) | ||
1093 | { | ||
1094 | drv->drv.bus = &ecard_bus_type; | ||
1095 | |||
1096 | return driver_register(&drv->drv); | ||
1097 | } | ||
1098 | |||
1099 | void ecard_remove_driver(struct ecard_driver *drv) | ||
1100 | { | ||
1101 | driver_unregister(&drv->drv); | ||
1102 | } | ||
1103 | |||
1104 | static int ecard_match(struct device *_dev, struct device_driver *_drv) | ||
1105 | { | ||
1106 | struct expansion_card *ec = ECARD_DEV(_dev); | ||
1107 | struct ecard_driver *drv = ECARD_DRV(_drv); | ||
1108 | int ret; | ||
1109 | |||
1110 | if (drv->id_table) { | ||
1111 | ret = ecard_match_device(drv->id_table, ec) != NULL; | ||
1112 | } else { | ||
1113 | ret = ec->cid.id == drv->id; | ||
1114 | } | ||
1115 | |||
1116 | return ret; | ||
1117 | } | ||
1118 | |||
1119 | struct bus_type ecard_bus_type = { | ||
1120 | .name = "ecard", | ||
1121 | .dev_attrs = ecard_dev_attrs, | ||
1122 | .match = ecard_match, | ||
1123 | .probe = ecard_drv_probe, | ||
1124 | .remove = ecard_drv_remove, | ||
1125 | .shutdown = ecard_drv_shutdown, | ||
1126 | }; | ||
1127 | |||
1128 | static int ecard_bus_init(void) | ||
1129 | { | ||
1130 | return bus_register(&ecard_bus_type); | ||
1131 | } | ||
1132 | |||
1133 | postcore_initcall(ecard_bus_init); | ||
1134 | |||
1135 | EXPORT_SYMBOL(ecard_readchunk); | ||
1136 | EXPORT_SYMBOL(ecard_register_driver); | ||
1137 | EXPORT_SYMBOL(ecard_remove_driver); | ||
1138 | EXPORT_SYMBOL(ecard_bus_type); | ||
diff --git a/arch/arm/mach-rpc/ecard.h b/arch/arm/mach-rpc/ecard.h new file mode 100644 index 000000000000..4642d436be2a --- /dev/null +++ b/arch/arm/mach-rpc/ecard.h | |||
@@ -0,0 +1,69 @@ | |||
1 | /* | ||
2 | * ecard.h | ||
3 | * | ||
4 | * Copyright 2007 Russell King | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License version 2 as | ||
8 | * published by the Free Software Foundation. | ||
9 | */ | ||
10 | |||
11 | /* Definitions internal to ecard.c - for it's use only!! | ||
12 | * | ||
13 | * External expansion card header as read from the card | ||
14 | */ | ||
15 | struct ex_ecid { | ||
16 | unsigned char r_irq:1; | ||
17 | unsigned char r_zero:1; | ||
18 | unsigned char r_fiq:1; | ||
19 | unsigned char r_id:4; | ||
20 | unsigned char r_a:1; | ||
21 | |||
22 | unsigned char r_cd:1; | ||
23 | unsigned char r_is:1; | ||
24 | unsigned char r_w:2; | ||
25 | unsigned char r_r1:4; | ||
26 | |||
27 | unsigned char r_r2:8; | ||
28 | |||
29 | unsigned char r_prod[2]; | ||
30 | |||
31 | unsigned char r_manu[2]; | ||
32 | |||
33 | unsigned char r_country; | ||
34 | |||
35 | unsigned char r_fiqmask; | ||
36 | unsigned char r_fiqoff[3]; | ||
37 | |||
38 | unsigned char r_irqmask; | ||
39 | unsigned char r_irqoff[3]; | ||
40 | }; | ||
41 | |||
42 | /* | ||
43 | * Chunk directory entry as read from the card | ||
44 | */ | ||
45 | struct ex_chunk_dir { | ||
46 | unsigned char r_id; | ||
47 | unsigned char r_len[3]; | ||
48 | unsigned long r_start; | ||
49 | union { | ||
50 | char string[256]; | ||
51 | char data[1]; | ||
52 | } d; | ||
53 | #define c_id(x) ((x)->r_id) | ||
54 | #define c_len(x) ((x)->r_len[0]|((x)->r_len[1]<<8)|((x)->r_len[2]<<16)) | ||
55 | #define c_start(x) ((x)->r_start) | ||
56 | }; | ||
57 | |||
58 | typedef enum ecard_type { /* Cards address space */ | ||
59 | ECARD_IOC, | ||
60 | ECARD_MEMC, | ||
61 | ECARD_EASI | ||
62 | } card_type_t; | ||
63 | |||
64 | typedef enum { /* Speed for ECARD_IOC space */ | ||
65 | ECARD_SLOW = 0, | ||
66 | ECARD_MEDIUM = 1, | ||
67 | ECARD_FAST = 2, | ||
68 | ECARD_SYNC = 3 | ||
69 | } card_speed_t; | ||
diff --git a/arch/arm/mach-rpc/include/mach/irqs.h b/arch/arm/mach-rpc/include/mach/irqs.h index 3d2037496e38..6868e178274d 100644 --- a/arch/arm/mach-rpc/include/mach/irqs.h +++ b/arch/arm/mach-rpc/include/mach/irqs.h | |||
@@ -42,6 +42,4 @@ | |||
42 | */ | 42 | */ |
43 | #define FIQ_START 64 | 43 | #define FIQ_START 64 |
44 | 44 | ||
45 | #define IRQ_TIMER IRQ_TIMER0 | ||
46 | |||
47 | #define NR_IRQS 128 | 45 | #define NR_IRQS 128 |
diff --git a/arch/arm/mach-rpc/riscpc.c b/arch/arm/mach-rpc/riscpc.c index 3d44a59fc0df..731552d68adf 100644 --- a/arch/arm/mach-rpc/riscpc.c +++ b/arch/arm/mach-rpc/riscpc.c | |||
@@ -98,15 +98,9 @@ static void __init rpc_map_io(void) | |||
98 | } | 98 | } |
99 | 99 | ||
100 | static struct resource acornfb_resources[] = { | 100 | static struct resource acornfb_resources[] = { |
101 | { /* VIDC */ | 101 | /* VIDC */ |
102 | .start = 0x03400000, | 102 | DEFINE_RES_MEM(0x03400000, 0x00200000), |
103 | .end = 0x035fffff, | 103 | DEFINE_RES_IRQ(IRQ_VSYNCPULSE), |
104 | .flags = IORESOURCE_MEM, | ||
105 | }, { | ||
106 | .start = IRQ_VSYNCPULSE, | ||
107 | .end = IRQ_VSYNCPULSE, | ||
108 | .flags = IORESOURCE_IRQ, | ||
109 | }, | ||
110 | }; | 104 | }; |
111 | 105 | ||
112 | static struct platform_device acornfb_device = { | 106 | static struct platform_device acornfb_device = { |
@@ -120,11 +114,7 @@ static struct platform_device acornfb_device = { | |||
120 | }; | 114 | }; |
121 | 115 | ||
122 | static struct resource iomd_resources[] = { | 116 | static struct resource iomd_resources[] = { |
123 | { | 117 | DEFINE_RES_MEM(0x03200000, 0x10000), |
124 | .start = 0x03200000, | ||
125 | .end = 0x0320ffff, | ||
126 | .flags = IORESOURCE_MEM, | ||
127 | }, | ||
128 | }; | 118 | }; |
129 | 119 | ||
130 | static struct platform_device iomd_device = { | 120 | static struct platform_device iomd_device = { |
@@ -134,18 +124,25 @@ static struct platform_device iomd_device = { | |||
134 | .resource = iomd_resources, | 124 | .resource = iomd_resources, |
135 | }; | 125 | }; |
136 | 126 | ||
127 | static struct resource iomd_kart_resources[] = { | ||
128 | DEFINE_RES_IRQ(IRQ_KEYBOARDRX), | ||
129 | DEFINE_RES_IRQ(IRQ_KEYBOARDTX), | ||
130 | }; | ||
131 | |||
137 | static struct platform_device kbd_device = { | 132 | static struct platform_device kbd_device = { |
138 | .name = "kart", | 133 | .name = "kart", |
139 | .id = -1, | 134 | .id = -1, |
140 | .dev = { | 135 | .dev = { |
141 | .parent = &iomd_device.dev, | 136 | .parent = &iomd_device.dev, |
142 | }, | 137 | }, |
138 | .num_resources = ARRAY_SIZE(iomd_kart_resources), | ||
139 | .resource = iomd_kart_resources, | ||
143 | }; | 140 | }; |
144 | 141 | ||
145 | static struct plat_serial8250_port serial_platform_data[] = { | 142 | static struct plat_serial8250_port serial_platform_data[] = { |
146 | { | 143 | { |
147 | .mapbase = 0x03010fe0, | 144 | .mapbase = 0x03010fe0, |
148 | .irq = 10, | 145 | .irq = IRQ_SERIALPORT, |
149 | .uartclk = 1843200, | 146 | .uartclk = 1843200, |
150 | .regshift = 2, | 147 | .regshift = 2, |
151 | .iotype = UPIO_MEM, | 148 | .iotype = UPIO_MEM, |
@@ -167,21 +164,9 @@ static struct pata_platform_info pata_platform_data = { | |||
167 | }; | 164 | }; |
168 | 165 | ||
169 | static struct resource pata_resources[] = { | 166 | static struct resource pata_resources[] = { |
170 | [0] = { | 167 | DEFINE_RES_MEM(0x030107c0, 0x20), |
171 | .start = 0x030107c0, | 168 | DEFINE_RES_MEM(0x03010fd8, 0x04), |
172 | .end = 0x030107df, | 169 | DEFINE_RES_IRQ(IRQ_HARDDISK), |
173 | .flags = IORESOURCE_MEM, | ||
174 | }, | ||
175 | [1] = { | ||
176 | .start = 0x03010fd8, | ||
177 | .end = 0x03010fdb, | ||
178 | .flags = IORESOURCE_MEM, | ||
179 | }, | ||
180 | [2] = { | ||
181 | .start = IRQ_HARDDISK, | ||
182 | .end = IRQ_HARDDISK, | ||
183 | .flags = IORESOURCE_IRQ, | ||
184 | }, | ||
185 | }; | 170 | }; |
186 | 171 | ||
187 | static struct platform_device pata_device = { | 172 | static struct platform_device pata_device = { |
diff --git a/arch/arm/mach-rpc/time.c b/arch/arm/mach-rpc/time.c new file mode 100644 index 000000000000..581fca934bb3 --- /dev/null +++ b/arch/arm/mach-rpc/time.c | |||
@@ -0,0 +1,95 @@ | |||
1 | /* | ||
2 | * linux/arch/arm/common/time-acorn.c | ||
3 | * | ||
4 | * Copyright (c) 1996-2000 Russell King. | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License version 2 as | ||
8 | * published by the Free Software Foundation. | ||
9 | * | ||
10 | * Changelog: | ||
11 | * 24-Sep-1996 RMK Created | ||
12 | * 10-Oct-1996 RMK Brought up to date with arch-sa110eval | ||
13 | * 04-Dec-1997 RMK Updated for new arch/arm/time.c | ||
14 | * 13=Jun-2004 DS Moved to arch/arm/common b/c shared w/CLPS7500 | ||
15 | */ | ||
16 | #include <linux/timex.h> | ||
17 | #include <linux/init.h> | ||
18 | #include <linux/interrupt.h> | ||
19 | #include <linux/irq.h> | ||
20 | #include <linux/io.h> | ||
21 | |||
22 | #include <mach/hardware.h> | ||
23 | #include <asm/hardware/ioc.h> | ||
24 | |||
25 | #include <asm/mach/time.h> | ||
26 | |||
27 | unsigned long ioc_timer_gettimeoffset(void) | ||
28 | { | ||
29 | unsigned int count1, count2, status; | ||
30 | long offset; | ||
31 | |||
32 | ioc_writeb (0, IOC_T0LATCH); | ||
33 | barrier (); | ||
34 | count1 = ioc_readb(IOC_T0CNTL) | (ioc_readb(IOC_T0CNTH) << 8); | ||
35 | barrier (); | ||
36 | status = ioc_readb(IOC_IRQREQA); | ||
37 | barrier (); | ||
38 | ioc_writeb (0, IOC_T0LATCH); | ||
39 | barrier (); | ||
40 | count2 = ioc_readb(IOC_T0CNTL) | (ioc_readb(IOC_T0CNTH) << 8); | ||
41 | |||
42 | offset = count2; | ||
43 | if (count2 < count1) { | ||
44 | /* | ||
45 | * We have not had an interrupt between reading count1 | ||
46 | * and count2. | ||
47 | */ | ||
48 | if (status & (1 << 5)) | ||
49 | offset -= LATCH; | ||
50 | } else if (count2 > count1) { | ||
51 | /* | ||
52 | * We have just had another interrupt between reading | ||
53 | * count1 and count2. | ||
54 | */ | ||
55 | offset -= LATCH; | ||
56 | } | ||
57 | |||
58 | offset = (LATCH - offset) * (tick_nsec / 1000); | ||
59 | return (offset + LATCH/2) / LATCH; | ||
60 | } | ||
61 | |||
62 | void __init ioctime_init(void) | ||
63 | { | ||
64 | ioc_writeb(LATCH & 255, IOC_T0LTCHL); | ||
65 | ioc_writeb(LATCH >> 8, IOC_T0LTCHH); | ||
66 | ioc_writeb(0, IOC_T0GO); | ||
67 | } | ||
68 | |||
69 | static irqreturn_t | ||
70 | ioc_timer_interrupt(int irq, void *dev_id) | ||
71 | { | ||
72 | timer_tick(); | ||
73 | return IRQ_HANDLED; | ||
74 | } | ||
75 | |||
76 | static struct irqaction ioc_timer_irq = { | ||
77 | .name = "timer", | ||
78 | .flags = IRQF_DISABLED, | ||
79 | .handler = ioc_timer_interrupt | ||
80 | }; | ||
81 | |||
82 | /* | ||
83 | * Set up timer interrupt. | ||
84 | */ | ||
85 | static void __init ioc_timer_init(void) | ||
86 | { | ||
87 | ioctime_init(); | ||
88 | setup_irq(IRQ_TIMER0, &ioc_timer_irq); | ||
89 | } | ||
90 | |||
91 | struct sys_timer ioc_timer = { | ||
92 | .init = ioc_timer_init, | ||
93 | .offset = ioc_timer_gettimeoffset, | ||
94 | }; | ||
95 | |||