aboutsummaryrefslogtreecommitdiff
path: root/sys/arm/xscale/i80321/i80321_pci.c
blob: 965f01e0ec7275ed9d60edff672d1bfd7b070466 (plain) (blame)
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
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
/*	$NetBSD: i80321_pci.c,v 1.4 2003/07/15 00:24:54 lukem Exp $	*/

/*
 * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
 * All rights reserved.
 *
 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed for the NetBSD Project by
 *	Wasabi Systems, Inc.
 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
 *    or promote products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
 * 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.
 */

/*
 * PCI configuration support for i80321 I/O Processor chip.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#define __RMAN_RESOURCE_VISIBLE
#include <sys/rman.h>

#include <machine/bus.h>
#include <machine/cpu.h>
#include <machine/pcb.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_extern.h>
#include <machine/pmap.h>

#include <arm/xscale/i80321/i80321reg.h>
#include <arm/xscale/i80321/i80321var.h>
#include <arm/xscale/i80321/i80321_intr.h>

#include <dev/pci/pcib_private.h>
#include "pcib_if.h"

#include <dev/pci/pcireg.h>
extern struct i80321_softc *i80321_softc;

struct i80321_pci_softc {
	device_t 		sc_dev;
	bus_space_tag_t 	sc_st;
	bus_space_handle_t 	sc_atu_sh;
	bus_space_tag_t		sc_pciio;
	bus_space_tag_t		sc_pcimem;
	int			sc_busno;
	struct rman		sc_mem_rman;
	struct rman		sc_io_rman;
	struct rman		sc_irq_rman;
	uint32_t		sc_mem;
	uint32_t		sc_io;
};

static int
i80321_pci_probe(device_t dev)
{
	device_set_desc(dev, "i80321 PCI bus");
	return (0);
}

static int
i80321_pci_attach(device_t dev)
{

	uint32_t busno;                                       
	struct i80321_pci_softc *sc = device_get_softc(dev);

	sc->sc_st = i80321_softc->sc_st;
	sc->sc_atu_sh = i80321_softc->sc_atu_sh;
	busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
	busno = PCIXSR_BUSNO(busno);
	if (busno == 0xff)
		busno = 0;
	sc->sc_dev = dev;
	sc->sc_busno = busno;
	sc->sc_pciio = &i80321_softc->sc_pci_iot;
	sc->sc_pcimem = &i80321_softc->sc_pci_memt;
	sc->sc_mem = i80321_softc->sc_owin[0].owin_xlate_lo +
	    VERDE_OUT_XLATE_MEM_WIN_SIZE;
	
	sc->sc_io = i80321_softc->sc_iow_vaddr;
	/* Initialize memory and i/o rmans. */
	sc->sc_io_rman.rm_type = RMAN_ARRAY;
	sc->sc_io_rman.rm_descr = "I80321 PCI I/O Ports";
	if (rman_init(&sc->sc_io_rman) != 0 ||
		rman_manage_region(&sc->sc_io_rman, 
		sc->sc_io, 
		    sc->sc_io + 
		    VERDE_OUT_XLATE_IO_WIN_SIZE) != 0) {
		panic("i80321_pci_probe: failed to set up I/O rman");
	}
	sc->sc_mem_rman.rm_type = RMAN_ARRAY;
	sc->sc_mem_rman.rm_descr = "I80321 PCI Memory";
	if (rman_init(&sc->sc_mem_rman) != 0 ||
	    rman_manage_region(&sc->sc_mem_rman, 
	    0, VERDE_OUT_XLATE_MEM_WIN_SIZE) != 0) {
		panic("i80321_pci_probe: failed to set up memory rman");
	}
	sc->sc_irq_rman.rm_type = RMAN_ARRAY;
	sc->sc_irq_rman.rm_descr = "i80321 PCI IRQs";
	if (rman_init(&sc->sc_irq_rman) != 0 ||
	    rman_manage_region(&sc->sc_irq_rman, 26, 32) != 0)
		panic("i80321_pci_probe: failed to set up IRQ rman");
	device_add_child(dev, "pci",busno);
	return (bus_generic_attach(dev));
}

static int
i80321_pci_maxslots(device_t dev)
{
	return (PCI_SLOTMAX);
}



static int
i80321_pci_conf_setup(struct i80321_pci_softc *sc, int bus, int slot, int func,
    int reg, uint32_t *addr)
{
	uint32_t busno;

	busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
	busno = PCIXSR_BUSNO(busno);
	if (busno == 0xff)
		busno = 0;

	/*
	 * If the bus # is the same as our own, then use Type 0 cycles,
	 * else use Type 1.
	 *
	 * XXX We should filter out all non-private devices here!
	 * XXX How does private space interact with PCI-PCI bridges?
	 */
	if (bus == busno) {
		if (slot > (31 - 16))
			return (1);
		/*
		 * NOTE: PCI-X requires that that devices updated their
		 * PCIXSR on every config write with the device number
		 * specified in AD[15:11].  If we don't set this field,
		 * each device could end of thinking it is at device 0,
		 * which can cause a number of problems.  Doing this
		 * unconditionally should be OK when only PCI devices
		 * are present.
		 */
		bus &= 0xff;
		slot &= 0x1f;
		func &= 0x07;
		
		*addr = (1U << (slot + 16)) |
		    (slot << 11) | (func << 8) | reg;
	} else {
		*addr = (bus << 16) | (slot << 11) | (func << 8) | reg | 1;
	}

	return (0);
}

static u_int32_t
i80321_pci_read_config(device_t dev, int bus, int slot, int func, int reg,
    int bytes)
{
	struct i80321_pci_softc *sc = device_get_softc(dev);
	uint32_t isr;
	uint32_t addr;
	u_int32_t ret = 0;
	vm_offset_t va;
	int err = 0;
	if (i80321_pci_conf_setup(sc, bus, slot, func, reg & ~3, &addr))
		return (-1);
	bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OCCAR,
	    addr/* & ~3*/);

	va = sc->sc_atu_sh;
	switch (bytes) {
	case 1:
		err = badaddr_read((void*)(va + ATU_OCCDR + (reg & 3)), 1, &ret);
		break;
	case 2:
		err = badaddr_read((void*)(va + ATU_OCCDR + (reg & 3)), 2, &ret);
		break;
	case 4:
		err = badaddr_read((void *)(va + ATU_OCCDR), 4, &ret);
		break;
	default:
		printf("i803218_read_config: invalid size %d\n", bytes);
		ret = -1;
	}
	if (err) {

		isr = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_ATUISR);
		bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_ATUISR,
		    isr & (ATUISR_P_SERR_DET|ATUISR_PMA|ATUISR_PTAM|
		    ATUISR_PTAT|ATUISR_PMPE));
		return (-1);
	}
	return (ret);
}

static void
i80321_pci_write_config(device_t dev, int bus, int slot, int func, int reg,
    u_int32_t data, int bytes)
{
	struct i80321_pci_softc *sc = device_get_softc(dev);
	uint32_t addr;

	if (i80321_pci_conf_setup(sc, bus, slot, func, reg, &addr))
		return;


	bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OCCAR,
	    addr);
	switch (bytes) {
	case 1:
		bus_space_write_1(sc->sc_st, sc->sc_atu_sh, ATU_OCCDR, data);
		break;
	case 2:
		bus_space_write_2(sc->sc_st, sc->sc_atu_sh, ATU_OCCDR, data);
		break;
	case 4:
		bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OCCDR, data);
		break;
	default:
		printf("i80321_pci_write_config: Invalid size : %d\n", bytes);
	}

}

static int
i80321_pci_route_interrupt(device_t pcib, device_t dev, int pin)
{
	int bus;
	int device;
	int func;
	uint32_t busno;
	struct i80321_pci_softc *sc = device_get_softc(pcib);

	bus = pci_get_bus(dev);
	device = pci_get_slot(dev);
	func = pci_get_function(dev);
	busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
	busno = PCIXSR_BUSNO(busno);
	if (busno == 0xff)
		busno = 0;
	if (bus != busno)
		goto no_mapping;
	switch (device) {
		/* IQ31244 PCI */
	case 1: /* PCIX-PCIX bridge */
		/*
		 * The S-ATA chips are behind the bridge, and all of
		 * the S-ATA interrupts are wired together.
		 */
		return (ICU_INT_XINT(2));
	case 2: /* PCI slot */
		/* All pins are wired together. */
		return (ICU_INT_XINT(3));
	case 3: /* i82546 dual Gig-E */
		if (pin == 1 || pin == 2)
			return (ICU_INT_XINT(0));
		goto no_mapping;
		/* IQ80321 PCI */
	case 4: /* i82544 Gig-E */
		if (pin == 1)
			return (ICU_INT_XINT(0));
		goto no_mapping;
	case 6: /* S-PCI-X slot */
		if (pin == 1)
			return (ICU_INT_XINT(2));
		if (pin == 2)
			return (ICU_INT_XINT(3));
		goto no_mapping;
	default:
no_mapping:
		printf("No mapping for %d/%d/%d/%c\n", bus, device, func, pin);
		
	}
	return (0);

}

static int
i80321_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
{
	struct i80321_pci_softc *sc = device_get_softc(dev);
	switch (which) {
	case PCIB_IVAR_BUS:

		*result = sc->sc_busno;
		return (0);
		
	}
	return (ENOENT);
}

static int
i80321_write_ivar(device_t dev, device_t child, int which, uintptr_t result)
{
	struct i80321_pci_softc * sc = device_get_softc(dev);

	switch (which) {
	case PCIB_IVAR_BUS:
		sc->sc_busno = result;
		return (0);
	}
	return (ENOENT);
}

static struct resource *
i80321_pci_alloc_resource(device_t bus, device_t child, int type, int *rid,
    u_long start, u_long end, u_long count, u_int flags)
{
	struct i80321_pci_softc *sc = device_get_softc(bus);	
	struct resource *rv;
	struct rman *rm;
	bus_space_tag_t bt = NULL;
	bus_space_handle_t bh = 0;

	if (type == SYS_RES_IRQ) {
		rv = malloc(sizeof(*rv), M_DEVBUF, M_WAITOK);
		rv->r_start = start;
		rv->r_end = end;
		rv->r_rid = *rid;
		return (rv);
	}
	switch (type) {
	case SYS_RES_IRQ:
		rm = &sc->sc_mem_rman;
		break;
	case SYS_RES_MEMORY:
		rm = &sc->sc_mem_rman;
		bt = sc->sc_pcimem;
		bh = sc->sc_mem;
		break;
	case SYS_RES_IOPORT:
		rm = &sc->sc_io_rman;
		bt = sc->sc_pciio;
		bh = sc->sc_io;
		start = start - 0x90000000 + sc->sc_io;
		end = end - 0x90000000 + sc->sc_io;
		break;
	default:
		return (NULL);
	}

	rv = rman_reserve_resource(rm, start, end, count, flags, child);
	if (rv == NULL) 
		return (NULL);
	if (type != SYS_RES_IRQ) {
		bh += (rman_get_start(rv));
		rman_set_bustag(rv, bt);
		rman_set_bushandle(rv, bh);
		if (flags & RF_ACTIVE) {
			if (bus_activate_resource(child, type, *rid, rv)) {
				rman_release_resource(rv);
				return (NULL);
			}
		} 
	}
	return (rv);
}

static int
i80321_pci_activate_resource(device_t bus, device_t child, int type, int rid,
    struct resource *r)
{
	u_long p;
	int error;
	
	if (type == SYS_RES_MEMORY) {
		error = bus_space_map(rman_get_bustag(r),
		    rman_get_bushandle(r), rman_get_size(r), 0, &p);
		if (error) 
			return (error);
		rman_set_bushandle(r, p);
	
	}
	return (rman_activate_resource(r));
}

static int
i80321_pci_setup_intr(device_t dev, device_t child,
    struct resource *ires, int flags, driver_intr_t *intr, void *arg,
    void **cookiep)
{
	return (BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags,
	    intr, arg, cookiep));
}
static device_method_t i80321_pci_methods[] = {
	/* Device interface */
	DEVMETHOD(device_probe,		i80321_pci_probe),
	DEVMETHOD(device_attach,	i80321_pci_attach),
	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
	DEVMETHOD(device_suspend,	bus_generic_suspend),
	DEVMETHOD(device_resume,	bus_generic_resume),

	/* Bus interface */
	DEVMETHOD(bus_print_child,	bus_generic_print_child),
	DEVMETHOD(bus_read_ivar,	i80321_read_ivar),
	DEVMETHOD(bus_write_ivar,	i80321_write_ivar),
	DEVMETHOD(bus_alloc_resource,	i80321_pci_alloc_resource),
	DEVMETHOD(bus_release_resource,	bus_generic_release_resource),
	DEVMETHOD(bus_activate_resource, i80321_pci_activate_resource),
	DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
	DEVMETHOD(bus_setup_intr,	i80321_pci_setup_intr),
	DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),

	/* pcib interface */
	DEVMETHOD(pcib_maxslots,	i80321_pci_maxslots),
	DEVMETHOD(pcib_read_config,	i80321_pci_read_config),
	DEVMETHOD(pcib_write_config,	i80321_pci_write_config),
	DEVMETHOD(pcib_route_interrupt,	i80321_pci_route_interrupt),

	{0, 0}
};

static driver_t i80321_pci_driver = {
	"pcib",
	i80321_pci_methods,
	sizeof(struct i80321_pci_softc),
};

static devclass_t i80321_pci_devclass;

DRIVER_MODULE(ipci, iq, i80321_pci_driver, i80321_pci_devclass, 0, 0);