summaryrefslogtreecommitdiffstats
path: root/sys/alpha/pci/lca.c
blob: f7868da0a1146a693ff83e08f094c0422ffc8e96 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
/*-
 * Copyright (c) 1998 Doug Rabson
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	$Id: lca.c,v 1.8 1999/05/10 15:46:38 peter Exp $
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>

#include <alpha/pci/lcareg.h>
#include <alpha/pci/lcavar.h>
#include <alpha/pci/pcibus.h>
#include <alpha/isa/isavar.h>
#include <machine/intr.h>
#include <machine/resource.h>
#include <machine/cpuconf.h>
#include <machine/swiz.h>

#define KV(pa)			ALPHA_PHYS_TO_K0SEG(pa)

static devclass_t	lca_devclass;
static device_t		lca0;		/* XXX only one for now */

struct lca_softc {
	int		junk;
};

#define LCA_SOFTC(dev)	(struct lca_softc*) device_get_softc(dev)

static alpha_chipset_inb_t	lca_inb;
static alpha_chipset_inw_t	lca_inw;
static alpha_chipset_inl_t	lca_inl;
static alpha_chipset_outb_t	lca_outb;
static alpha_chipset_outw_t	lca_outw;
static alpha_chipset_outl_t	lca_outl;
static alpha_chipset_readb_t	lca_readb;
static alpha_chipset_readw_t	lca_readw;
static alpha_chipset_readl_t	lca_readl;
static alpha_chipset_writeb_t	lca_writeb;
static alpha_chipset_writew_t	lca_writew;
static alpha_chipset_writel_t	lca_writel;
static alpha_chipset_maxdevs_t	lca_maxdevs;
static alpha_chipset_cfgreadb_t	lca_cfgreadb;
static alpha_chipset_cfgreadw_t	lca_cfgreadw;
static alpha_chipset_cfgreadl_t	lca_cfgreadl;
static alpha_chipset_cfgwriteb_t lca_cfgwriteb;
static alpha_chipset_cfgwritew_t lca_cfgwritew;
static alpha_chipset_cfgwritel_t lca_cfgwritel;
static alpha_chipset_addrcvt_t   lca_cvt_dense;
static alpha_chipset_read_hae_t	lca_read_hae;
static alpha_chipset_write_hae_t lca_write_hae;

static alpha_chipset_t lca_chipset = {
	lca_inb,
	lca_inw,
	lca_inl,
	lca_outb,
	lca_outw,
	lca_outl,
	lca_readb,
	lca_readw,
	lca_readl,
	lca_writeb,
	lca_writew,
	lca_writel,
	lca_maxdevs,
	lca_cfgreadb,
	lca_cfgreadw,
	lca_cfgreadl,
	lca_cfgwriteb,
	lca_cfgwritew,
	lca_cfgwritel,
	lca_cvt_dense,
	NULL,
	lca_read_hae,
	lca_write_hae,
};

static u_int8_t
lca_inb(u_int32_t port)
{
	alpha_mb();
	return SPARSE_READ_BYTE(KV(LCA_PCI_SIO), port);
}

static u_int16_t
lca_inw(u_int32_t port)
{
	alpha_mb();
	return SPARSE_READ_WORD(KV(LCA_PCI_SIO), port);
}

static u_int32_t
lca_inl(u_int32_t port)
{
	alpha_mb();
	return SPARSE_READ_LONG(KV(LCA_PCI_SIO), port);
}

static void
lca_outb(u_int32_t port, u_int8_t data)
{
	SPARSE_WRITE_BYTE(KV(LCA_PCI_SIO), port, data);
	alpha_wmb();
}

static void
lca_outw(u_int32_t port, u_int16_t data)
{
	SPARSE_WRITE_WORD(KV(LCA_PCI_SIO), port, data);
	alpha_wmb();
}

static void
lca_outl(u_int32_t port, u_int32_t data)
{
	SPARSE_WRITE_LONG(KV(LCA_PCI_SIO), port, data);
	alpha_wmb();
}

/*
 * The LCA HAE is write-only.  According to NetBSD, this is where it starts.
 */
static u_int32_t	lca_hae_mem = 0x80000000;

/*
 * The first 16Mb ignores the HAE.  The next 112Mb uses the HAE to set
 * the high bits of the PCI address.
 */
#define REG1 (1UL << 24)

static __inline  void
lca_set_hae_mem(u_int32_t *pa)
{
	int s; 
	u_int32_t msb;
	if(*pa >= REG1){
		msb = *pa & 0xf8000000;
		*pa -= msb;
		s = splhigh();
                if (msb != lca_hae_mem) {
			lca_hae_mem = msb;
			REGVAL(LCA_IOC_HAE) = lca_hae_mem;
			alpha_mb();
			alpha_mb();
		}
		splx(s);
	}
}

static u_int8_t
lca_readb(u_int32_t pa)
{
	alpha_mb();
	lca_set_hae_mem(&pa);
	return SPARSE_READ_BYTE(KV(LCA_PCI_SPARSE), pa);
}

static u_int16_t
lca_readw(u_int32_t pa)
{
	alpha_mb();
	lca_set_hae_mem(&pa);
	return SPARSE_READ_WORD(KV(LCA_PCI_SPARSE), pa);
}

static u_int32_t
lca_readl(u_int32_t pa)
{
	alpha_mb();
	lca_set_hae_mem(&pa);
	return SPARSE_READ_LONG(KV(LCA_PCI_SPARSE), pa);
}

static void
lca_writeb(u_int32_t pa, u_int8_t data)
{
	lca_set_hae_mem(&pa);
	SPARSE_WRITE_BYTE(KV(LCA_PCI_SPARSE), pa, data);
	alpha_wmb();
}

static void
lca_writew(u_int32_t pa, u_int16_t data)
{
	lca_set_hae_mem(&pa);
	SPARSE_WRITE_WORD(KV(LCA_PCI_SPARSE), pa, data);
	alpha_wmb();
}

static void
lca_writel(u_int32_t pa, u_int32_t data)
{
	lca_set_hae_mem(&pa);
	SPARSE_WRITE_LONG(KV(LCA_PCI_SPARSE), pa, data);
	alpha_wmb();
}

static int
lca_maxdevs(u_int b)
{
	return 12;		/* XXX */
}

#define LCA_CFGOFF(b, s, f, r) \
	((b) ? (((b) << 16) | ((s) << 11) | ((f) << 8) | (r)) \
	 : ((1 << ((s) + 11)) | ((f) << 8) | (r)))

#define LCA_TYPE1_SETUP(b,s) if ((b)) {		\
        do {					\
		(s) = splhigh();		\
		alpha_mb();			\
		REGVAL(LCA_IOC_CONF) = 1;	\
		alpha_mb();			\
        } while(0);				\
}

#define LCA_TYPE1_TEARDOWN(b,s) if ((b)) {	\
        do {					\
		alpha_mb();			\
		REGVAL(LCA_IOC_CONF) = 0;	\
		alpha_mb();			\
		splx((s));			\
        } while(0);				\
}

#define CFGREAD(b, s, f, r, width, type)				 \
	type val = ~0;							 \
	int ipl = 0;							 \
	vm_offset_t off = LCA_CFGOFF(b, s, f, r);			 \
	vm_offset_t kv = SPARSE_##width##_ADDRESS(KV(LCA_PCI_CONF), off); \
	alpha_mb();							 \
	LCA_TYPE1_SETUP(b,ipl);						 \
	if (!badaddr((caddr_t)kv, sizeof(type))) {			 \
		val = SPARSE_##width##_EXTRACT(off, SPARSE_READ(kv));	 \
	}								 \
        LCA_TYPE1_TEARDOWN(b,ipl);					 \
	return val							

#define CFGWRITE(b, s, f, r, data, width, type)				\
	int ipl = 0;							\
	vm_offset_t off = LCA_CFGOFF(b, s, f, r);			\
	vm_offset_t kv = SPARSE_##width##_ADDRESS(KV(LCA_PCI_CONF), off); \
	alpha_mb();							\
	LCA_TYPE1_SETUP(b,ipl);						\
	if (!badaddr((caddr_t)kv, sizeof(type))) {			\
                SPARSE_WRITE(kv, SPARSE_##width##_INSERT(off, data));	\
		alpha_wmb();						\
	}								\
        LCA_TYPE1_TEARDOWN(b,ipl);					\
	return

static u_int8_t
lca_cfgreadb(u_int h, u_int b, u_int s, u_int f, u_int r)
{
	CFGREAD(b, s, f, r, BYTE, u_int8_t);
}

static u_int16_t
lca_cfgreadw(u_int h, u_int b, u_int s, u_int f, u_int r)
{
	CFGREAD(b, s, f, r, WORD, u_int16_t);
}

static u_int32_t
lca_cfgreadl(u_int h, u_int b, u_int s, u_int f, u_int r)
{
	CFGREAD(b, s, f, r, LONG, u_int32_t);
}

static void
lca_cfgwriteb(u_int h, u_int b, u_int s, u_int f, u_int r, u_int8_t data)
{
	CFGWRITE(b, s, f, r, data, BYTE, u_int8_t);
}

static void
lca_cfgwritew(u_int h, u_int b, u_int s, u_int f, u_int r, u_int16_t data)
{
	CFGWRITE(b, s, f, r, data, WORD, u_int16_t);
}

static void
lca_cfgwritel(u_int h, u_int b, u_int s, u_int f, u_int r, u_int32_t data)
{
	CFGWRITE(b, s, f, r, data, LONG, u_int16_t);
}

static vm_offset_t
lca_cvt_dense(vm_offset_t addr)
{
	addr &= 0xffffffffUL;
	return (addr | LCA_PCI_DENSE);
	
}

static u_int64_t
lca_read_hae(void)
{
	return lca_hae_mem & 0xf8000000;
}

static void
lca_write_hae(u_int64_t hae)
{
	u_int32_t pa = hae;
	lca_set_hae_mem(&pa);
}

static int lca_probe(device_t dev);
static int lca_attach(device_t dev);
static struct resource *lca_alloc_resource(device_t bus, device_t child,
					   int type, int *rid, u_long start,
					   u_long end, u_long count,
					   u_int flags);
static int lca_release_resource(device_t bus, device_t child,
				int type, int rid, struct resource *r);

static device_method_t lca_methods[] = {
	/* Device interface */
	DEVMETHOD(device_probe,		lca_probe),
	DEVMETHOD(device_attach,	lca_attach),

	/* Bus interface */
	DEVMETHOD(bus_alloc_resource,	lca_alloc_resource),
	DEVMETHOD(bus_release_resource,	lca_release_resource),
	DEVMETHOD(bus_activate_resource, pci_activate_resource),
	DEVMETHOD(bus_deactivate_resource, pci_deactivate_resource),
	DEVMETHOD(bus_setup_intr,	isa_setup_intr),
	DEVMETHOD(bus_teardown_intr,	isa_teardown_intr),

	{ 0, 0 }
};

static driver_t lca_driver = {
	"lca",
	lca_methods,
	sizeof(struct lca_softc),
};

void
lca_init()
{
	static int initted = 0;

	if (initted) return;
	initted = 1;

	/* Type 0 PCI conf access. */
	REGVAL64(LCA_IOC_CONF) = 0;

	if (platform.pci_intr_init)
		platform.pci_intr_init();

	chipset = lca_chipset;
}

static int
lca_probe(device_t dev)
{
	if (lca0)
		return ENXIO;
	lca0 = dev;
	device_set_desc(dev, "21066 Core Logic chipset"); /* XXX */

	pci_init_resources();
	isa_init_intr();

	device_add_child(dev, "pcib", 0, 0);

	return 0;
}

static int
lca_attach(device_t dev)
{
	lca_init();

	set_iointr(alpha_dispatch_intr);

	snprintf(chipset_type, sizeof(chipset_type), "lca");
	chipset_bwx = 0;
	chipset_ports = LCA_PCI_SIO;
	chipset_memory = LCA_PCI_SPARSE;
	chipset_dense = LCA_PCI_DENSE;
	chipset_hae_mask = IOC_HAE_ADDREXT;

	bus_generic_attach(dev);
	return 0;
}

static struct resource *
lca_alloc_resource(device_t bus, device_t child, int type, int *rid,
		   u_long start, u_long end, u_long count, u_int flags)
{
	if (type == SYS_RES_IRQ)
		return isa_alloc_intr(bus, child, start);
	else
		return pci_alloc_resource(bus, child, type, rid,
					  start, end, count, flags);
}

static int
lca_release_resource(device_t bus, device_t child, int type, int rid,
		     struct resource *r)
{
	if (type == SYS_RES_IRQ)
		return isa_release_intr(bus, child, r);
	else
		return pci_release_resource(bus, child, type, rid, r);
}

DRIVER_MODULE(lca, root, lca_driver, lca_devclass, 0, 0);

OpenPOWER on IntegriCloud