ixp425.c revision 169952
1164426Ssam/*	$NetBSD: ixp425.c,v 1.10 2005/12/11 12:16:51 christos Exp $ */
2164426Ssam
3164426Ssam/*
4164426Ssam * Copyright (c) 2003
5164426Ssam *	Ichiro FUKUHARA <ichiro@ichiro.org>.
6164426Ssam * All rights reserved.
7164426Ssam *
8164426Ssam * Redistribution and use in source and binary forms, with or without
9164426Ssam * modification, are permitted provided that the following conditions
10164426Ssam * are met:
11164426Ssam * 1. Redistributions of source code must retain the above copyright
12164426Ssam *    notice, this list of conditions and the following disclaimer.
13164426Ssam * 2. Redistributions in binary form must reproduce the above copyright
14164426Ssam *    notice, this list of conditions and the following disclaimer in the
15164426Ssam *    documentation and/or other materials provided with the distribution.
16164426Ssam * 3. All advertising materials mentioning features or use of this software
17164426Ssam *    must display the following acknowledgement:
18164426Ssam *	This product includes software developed by Ichiro FUKUHARA.
19164426Ssam * 4. The name of the company nor the name of the author may be used to
20164426Ssam *    endorse or promote products derived from this software without specific
21164426Ssam *    prior written permission.
22164426Ssam *
23164426Ssam * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR
24164426Ssam * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25164426Ssam * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26164426Ssam * IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR
27164426Ssam * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28164426Ssam * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29164426Ssam * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30164426Ssam * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31164426Ssam * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32164426Ssam * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33164426Ssam * SUCH DAMAGE.
34164426Ssam */
35164426Ssam
36164426Ssam#include <sys/cdefs.h>
37164426Ssam__FBSDID("$FreeBSD: head/sys/arm/xscale/ixp425/ixp425.c 169952 2007-05-24 16:25:49Z sam $");
38164426Ssam
39164426Ssam#define _ARM32_BUS_DMA_PRIVATE
40164426Ssam#include <sys/param.h>
41164426Ssam#include <sys/systm.h>
42164426Ssam#include <sys/bus.h>
43164426Ssam#include <sys/kernel.h>
44164426Ssam#include <sys/module.h>
45164426Ssam#include <sys/malloc.h>
46164426Ssam#include <sys/rman.h>
47164426Ssam#include <machine/bus.h>
48164426Ssam#include <machine/intr.h>
49164426Ssam
50164426Ssam#include <vm/vm.h>
51164426Ssam#include <vm/pmap.h>
52164426Ssam#include <arm/xscale/ixp425/ixp425reg.h>
53164426Ssam#include <arm/xscale/ixp425/ixp425var.h>
54164426Ssam#include <arm/xscale/ixp425/ixp425_intr.h>
55164426Ssam
56164426Ssam#include <dev/pci/pcireg.h>
57164426Ssam
58164426Ssamvolatile uint32_t intr_enabled;
59164426Ssamuint32_t intr_steer = 0;
60164426Ssam
61164426Ssamstruct	ixp425_softc *ixp425_softc = NULL;
62164426Ssam
63164426Ssamstatic int	ixp425_probe(device_t);
64164426Ssamstatic void	ixp425_identify(driver_t *, device_t);
65164426Ssamstatic int	ixp425_attach(device_t);
66164426Ssam
67164426Ssamstatic struct {
68164426Ssam	uint32_t	hwbase;
69164426Ssam	uint32_t	size;
70164426Ssam	uint32_t	vbase;
71164426Ssam} hwvtrans[] = {
72164426Ssam	{ IXP425_IO_HWBASE,	IXP425_IO_SIZE,		IXP425_IO_VBASE },
73164426Ssam	{ IXP425_EXP_HWBASE,	IXP425_EXP_SIZE,	IXP425_EXP_VBASE },
74164426Ssam	{ IXP425_PCI_HWBASE,	IXP425_PCI_SIZE,	IXP425_PCI_VBASE },
75164426Ssam	{ IXP425_PCI_MEM_HWBASE,IXP425_PCI_MEM_SIZE,	IXP425_PCI_MEM_VBASE },
76164426Ssam#if 0
77164426Ssam	{ IXP425_PCI_IO_HWBASE,	IXP425_PCI_IO_SIZE,	IXP425_PCI_IO_VBASE },
78164426Ssam#endif
79164426Ssam	{ IXP425_MCU_HWBASE,	IXP425_MCU_SIZE,	IXP425_MCU_VBASE },
80164426Ssam	{ IXP425_QMGR_HWBASE,	IXP425_QMGR_SIZE,	IXP425_QMGR_VBASE },
81164426Ssam	{ IXP425_NPE_A_HWBASE,	IXP425_NPE_A_SIZE,	IXP425_NPE_A_VBASE },
82164426Ssam	{ IXP425_NPE_B_HWBASE,	IXP425_NPE_B_SIZE,	IXP425_NPE_B_VBASE },
83164426Ssam	{ IXP425_NPE_C_HWBASE,	IXP425_NPE_C_SIZE,	IXP425_NPE_C_VBASE },
84164426Ssam	{ IXP425_MAC_A_HWBASE,	IXP425_MAC_A_SIZE,	IXP425_MAC_A_VBASE },
85164426Ssam	{ IXP425_MAC_B_HWBASE,	IXP425_MAC_B_SIZE,	IXP425_MAC_B_VBASE },
86164426Ssam	/* Gateworks Avila IDE/CF is mapped here */
87164426Ssam	{ IXP425_EXP_BUS_CS1_HWBASE, IXP425_EXP_BUS_SIZE,
88164426Ssam	  IXP425_EXP_BUS_CS1_VBASE },
89167570Sjhay	{ IXP425_EXP_BUS_CS2_HWBASE, IXP425_EXP_BUS_SIZE,
90167570Sjhay	  IXP425_EXP_BUS_CS2_VBASE },
91167570Sjhay	/* ADI Pronghorn Metro IDE/CF is mapped here */
92167570Sjhay	{ IXP425_EXP_BUS_CS3_HWBASE, IXP425_EXP_BUS_SIZE,
93167570Sjhay	  IXP425_EXP_BUS_CS3_VBASE },
94167570Sjhay	{ IXP425_EXP_BUS_CS4_HWBASE, IXP425_EXP_BUS_SIZE,
95167570Sjhay	  IXP425_EXP_BUS_CS4_VBASE },
96164426Ssam};
97164426Ssam
98164426Ssamstatic int
99164426Ssamgetvbase(uint32_t hwbase, uint32_t size, uint32_t *vbase)
100164426Ssam{
101164426Ssam	int i;
102164426Ssam
103164426Ssam	for (i = 0; i < sizeof hwvtrans / sizeof *hwvtrans; i++) {
104164426Ssam		if (hwbase >= hwvtrans[i].hwbase &&
105164426Ssam		    hwbase + size <= hwvtrans[i].hwbase + hwvtrans[i].size) {
106164426Ssam			*vbase = hwbase - hwvtrans[i].hwbase + hwvtrans[i].vbase;
107164426Ssam			return (0);
108164426Ssam		}
109164426Ssam	}
110164426Ssam
111164426Ssam	return (ENOENT);
112164426Ssam}
113164426Ssam
114164426Ssamstruct arm32_dma_range *
115164426Ssambus_dma_get_range(void)
116164426Ssam{
117164426Ssam	return (NULL);
118164426Ssam}
119164426Ssam
120164426Ssamint
121164426Ssambus_dma_get_range_nb(void)
122164426Ssam{
123164426Ssam	return (0);
124164426Ssam}
125164426Ssam
126164426Ssamstatic __inline u_int32_t
127164426Ssamixp425_irq2gpio_bit(int irq)
128164426Ssam{
129164426Ssam
130164426Ssam	static const uint8_t int2gpio[32] __attribute__ ((aligned(32))) = {
131164426Ssam		0xff, 0xff, 0xff, 0xff, 0xff, 0xff,	/* INT#0 -> INT#5 */
132164426Ssam		0x00, 0x01,				/* GPIO#0 -> GPIO#1 */
133164426Ssam		0xff, 0xff, 0xff, 0xff, 0xff, 0xff,	/* INT#8 -> INT#13 */
134164426Ssam		0xff, 0xff, 0xff, 0xff, 0xff,		/* INT#14 -> INT#18 */
135164426Ssam		0x02, 0x03, 0x04, 0x05, 0x06, 0x07,	/* GPIO#2 -> GPIO#7 */
136164426Ssam		0x08, 0x09, 0x0a, 0x0b, 0x0c,		/* GPIO#8 -> GPIO#12 */
137164426Ssam		0xff, 0xff				/* INT#30 -> INT#31 */
138164426Ssam	};
139164426Ssam
140164426Ssam	return (1U << int2gpio[irq]);
141164426Ssam}
142164426Ssam
143164426Ssamvoid
144164426Ssamarm_mask_irq(uintptr_t nb)
145164426Ssam{
146164426Ssam	intr_enabled &= ~(1 << nb);
147164426Ssam	ixp425_set_intrmask();
148164426Ssam	/*XXX; If it's a GPIO interrupt, ACK it know. Can it be a problem ?*/
149164426Ssam	if ((1 << nb) & IXP425_INT_GPIOMASK)
150164426Ssam		IXPREG(IXP425_GPIO_VBASE + IXP425_GPIO_GPISR) =
151164426Ssam		    ixp425_irq2gpio_bit(nb);
152164426Ssam
153164426Ssam
154164426Ssam}
155164426Ssam
156164426Ssamvoid
157164426Ssamarm_unmask_irq(uintptr_t nb)
158164426Ssam{
159166064Scognet
160164426Ssam	intr_enabled |= (1 << nb);
161164426Ssam	ixp425_set_intrmask();
162164426Ssam}
163164426Ssam
164164426Ssamstatic __inline uint32_t
165164426Ssamixp425_irq_read(void)
166164426Ssam{
167164426Ssam	return IXPREG(IXP425_INT_STATUS) & intr_enabled;
168164426Ssam}
169164426Ssam
170164426Ssamint
171164426Ssamarm_get_next_irq(void)
172164426Ssam{
173164426Ssam	int irq;
174164426Ssam
175164426Ssam	if ((irq = ixp425_irq_read()))
176164426Ssam		return (ffs(irq) - 1);
177164426Ssam	return (-1);
178164426Ssam}
179164426Ssam
180164426Ssamvoid
181164426Ssamcpu_reset(void)
182164426Ssam{
183164426Ssam
184164426Ssam	bus_space_write_4(&ixp425_bs_tag, IXP425_TIMER_VBASE,
185164426Ssam	    IXP425_OST_WDOG_KEY, OST_WDOG_KEY_MAJICK);
186164426Ssam	bus_space_write_4(&ixp425_bs_tag, IXP425_TIMER_VBASE,
187164426Ssam	    IXP425_OST_WDOG, 0);
188164426Ssam	bus_space_write_4(&ixp425_bs_tag, IXP425_TIMER_VBASE,
189164426Ssam	    IXP425_OST_WDOG_ENAB, OST_WDOG_ENAB_RST_ENA |
190164426Ssam	    OST_WDOG_ENAB_CNT_ENA);
191164426Ssam	printf("Reset failed!\n");
192164426Ssam	for(;;);
193164426Ssam}
194164426Ssam
195164426Ssamstatic void
196164426Ssamixp425_identify(driver_t *driver, device_t parent)
197164426Ssam{
198164426Ssam	BUS_ADD_CHILD(parent, 0, "ixp", 0);
199164426Ssam}
200164426Ssam
201164426Ssamstatic int
202164426Ssamixp425_probe(device_t dev)
203164426Ssam{
204164426Ssam	device_set_desc(dev, "Intel IXP425");
205164426Ssam	return (0);
206164426Ssam}
207164426Ssam
208164426Ssamstatic int
209164426Ssamixp425_attach(device_t dev)
210164426Ssam{
211164426Ssam	struct ixp425_softc *sc;
212164426Ssam
213164426Ssam	sc = device_get_softc(dev);
214164426Ssam	sc->sc_iot = &ixp425_bs_tag;
215164426Ssam	KASSERT(ixp425_softc == NULL, ("ixp425_attach called twice?"));
216164426Ssam	ixp425_softc = sc;
217164426Ssam
218164426Ssam	intr_enabled = 0;
219164426Ssam	ixp425_set_intrmask();
220164426Ssam	ixp425_set_intrsteer();
221164426Ssam
222166064Scognet	if (bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
223166064Scognet	    BUS_SPACE_MAXADDR, NULL, NULL,  0xffffffff, 0xff, 0xffffffff, 0,
224166064Scognet	    NULL, NULL, &sc->sc_dmat))
225166064Scognet		panic("couldn't create the IXP425 dma tag !");
226166064Scognet
227164426Ssam	sc->sc_irq_rman.rm_type = RMAN_ARRAY;
228164426Ssam	sc->sc_irq_rman.rm_descr = "IXP425 IRQs";
229164426Ssam	if (rman_init(&sc->sc_irq_rman) != 0 ||
230164426Ssam	    rman_manage_region(&sc->sc_irq_rman, 0, 31) != 0)
231164426Ssam		panic("ixp425_attach: failed to set up IRQ rman");
232164426Ssam
233164426Ssam	sc->sc_mem_rman.rm_type = RMAN_ARRAY;
234164426Ssam	sc->sc_mem_rman.rm_descr = "IXP425 Memory";
235164426Ssam	if (rman_init(&sc->sc_mem_rman) != 0 ||
236164426Ssam	    rman_manage_region(&sc->sc_mem_rman, 0, ~0) != 0)
237164426Ssam		panic("ixp425_attach: failed to set up IRQ rman");
238164426Ssam
239169952Ssam	BUS_ADD_CHILD(dev, 0, "pcib", 0);
240169952Ssam	BUS_ADD_CHILD(dev, 0, "ixpclk", 0);
241169952Ssam	BUS_ADD_CHILD(dev, 0, "ixpiic", 0);
242169952Ssam	/* XXX move to hints? */
243169952Ssam	BUS_ADD_CHILD(dev, 0, "ixpwdog", 0);
244164426Ssam
245169952Ssam	/* attach wired devices via hints */
246169952Ssam	bus_enumerate_hinted_children(dev);
247169952Ssam
248164426Ssam	if (bus_space_map(sc->sc_iot, IXP425_GPIO_HWBASE, IXP425_GPIO_SIZE,
249164426Ssam	    0, &sc->sc_gpio_ioh))
250164426Ssam		panic("ixp425_attach: unable to map GPIO registers");
251164426Ssam	if (bus_space_map(sc->sc_iot, IXP425_EXP_HWBASE, IXP425_EXP_SIZE,
252164426Ssam	    0, &sc->sc_exp_ioh))
253164426Ssam		panic("ixp425_attach: unable to map Expansion Bus registers");
254164426Ssam
255164426Ssam	bus_generic_probe(dev);
256164426Ssam	bus_generic_attach(dev);
257164426Ssam
258164426Ssam	return (0);
259164426Ssam}
260164426Ssam
261169952Ssamstatic void
262169952Ssamixp425_hinted_child(device_t bus, const char *dname, int dunit)
263169952Ssam{
264169952Ssam	device_t child;
265169952Ssam	struct ixp425_ivar *ivar;
266169952Ssam
267169952Ssam	child = BUS_ADD_CHILD(bus, 0, dname, dunit);
268169952Ssam	ivar = IXP425_IVAR(child);
269169952Ssam	resource_int_value(dname, dunit, "addr", &ivar->addr);
270169952Ssam	resource_int_value(dname, dunit, "irq", &ivar->irq);
271169952Ssam}
272169952Ssam
273169952Ssamstatic device_t
274169952Ssamixp425_add_child(device_t dev, int order, const char *name, int unit)
275169952Ssam{
276169952Ssam	device_t child;
277169952Ssam	struct ixp425_ivar *ivar;
278169952Ssam
279169952Ssam	child = device_add_child_ordered(dev, order, name, unit);
280169952Ssam	if (child == NULL)
281169952Ssam		return NULL;
282169952Ssam	ivar = malloc(sizeof(struct ixp425_ivar), M_DEVBUF, M_NOWAIT);
283169952Ssam	if (ivar == NULL) {
284169952Ssam		device_delete_child(dev, child);
285169952Ssam		return NULL;
286169952Ssam	}
287169952Ssam	ivar->addr = 0;
288169952Ssam	ivar->irq = -1;
289169952Ssam	device_set_ivars(child, ivar);
290169952Ssam	return child;
291169952Ssam}
292169952Ssam
293169952Ssamstatic int
294169952Ssamixp425_read_ivar(device_t bus, device_t child, int which, u_char *result)
295169952Ssam{
296169952Ssam	struct ixp425_ivar *ivar = IXP425_IVAR(child);
297169952Ssam
298169952Ssam	switch (which) {
299169952Ssam	case IXP425_IVAR_ADDR:
300169952Ssam		if (ivar->addr != 0) {
301169952Ssam			*(uint32_t *)result = ivar->addr;
302169952Ssam			return 0;
303169952Ssam		}
304169952Ssam		break;
305169952Ssam	case IXP425_IVAR_IRQ:
306169952Ssam		if (ivar->irq != -1) {
307169952Ssam			*(int *)result = ivar->irq;
308169952Ssam			return 0;
309169952Ssam		}
310169952Ssam		break;
311169952Ssam	}
312169952Ssam	return EINVAL;
313169952Ssam}
314169952Ssam
315164426Ssamstatic struct resource *
316164426Ssamixp425_alloc_resource(device_t dev, device_t child, int type, int *rid,
317164426Ssam    u_long start, u_long end, u_long count, u_int flags)
318164426Ssam{
319164426Ssam	struct ixp425_softc *sc = device_get_softc(dev);
320164426Ssam	struct rman *rmanp;
321164426Ssam	struct resource *rv;
322169952Ssam	uint32_t vbase, addr;
323169952Ssam	int irq;
324164426Ssam
325164426Ssam	switch (type) {
326164426Ssam	case SYS_RES_IRQ:
327164426Ssam		rmanp = &sc->sc_irq_rman;
328169952Ssam		/* override per hints */
329169952Ssam		if (BUS_READ_IVAR(dev, child, IXP425_IVAR_IRQ, &irq) == 0)
330169952Ssam			start = end = irq;
331169952Ssam		rv = rman_reserve_resource(rmanp, start, end, count,
332169952Ssam			flags, child);
333169952Ssam		if (rv != NULL)
334169952Ssam			rman_set_rid(rv, *rid);
335164426Ssam		break;
336164426Ssam
337164426Ssam	case SYS_RES_MEMORY:
338164426Ssam		rmanp = &sc->sc_mem_rman;
339169952Ssam		/* override per hints */
340169952Ssam		if (BUS_READ_IVAR(dev, child, IXP425_IVAR_ADDR, &addr) == 0) {
341169952Ssam			start = addr;
342169952Ssam			end = start + 0x1000;	/* XXX */
343169952Ssam		}
344169952Ssam		if (getvbase(start, end - start, &vbase))
345169952Ssam			return NULL;
346169952Ssam		rv = rman_reserve_resource(rmanp, start, end, count,
347169952Ssam			flags, child);
348169952Ssam		if (rv != NULL) {
349169952Ssam			rman_set_rid(rv, *rid);
350169952Ssam			if (strcmp(device_get_name(child), "uart") == 0)
351169952Ssam				rman_set_bustag(rv, &ixp425_a4x_bs_tag);
352164426Ssam			else
353169952Ssam				rman_set_bustag(rv, sc->sc_iot);
354169952Ssam			rman_set_bushandle(rv, vbase);
355164426Ssam		}
356164426Ssam		break;
357164426Ssam	default:
358169952Ssam		rv = NULL;
359169952Ssam		break;
360164426Ssam	}
361169952Ssam	return rv;
362164426Ssam}
363164426Ssam
364164426Ssamstatic int
365164426Ssamixp425_setup_intr(device_t dev, device_t child,
366166901Spiso    struct resource *ires, int flags, driver_filter_t *filt,
367166901Spiso    driver_intr_t *intr, void *arg, void **cookiep)
368164426Ssam{
369164426Ssam	uint32_t mask;
370169952Ssam	int i, irq;
371164426Ssam
372169952Ssam	if (BUS_READ_IVAR(dev, child, IXP425_IVAR_IRQ, &irq) == 0) {
373169952Ssam		rman_set_start(ires, irq);
374164426Ssam		rman_set_end(ires, rman_get_start(ires));
375164426Ssam	}
376166901Spiso	BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, filt, intr,
377166901Spiso	     arg, cookiep);
378164426Ssam
379164426Ssam	mask = 0;
380164426Ssam	for (i = rman_get_start(ires); i <= rman_get_end(ires); i++)
381164426Ssam		mask |= 1 << i;
382164426Ssam	intr_enabled |= mask;
383164426Ssam	ixp425_set_intrmask();
384164426Ssam
385164426Ssam	return (0);
386164426Ssam}
387164426Ssam
388164426Ssamstatic int
389164426Ssamixp425_teardown_intr(device_t dev, device_t child, struct resource *res,
390164426Ssam    void *cookie)
391164426Ssam{
392164426Ssam	uint32_t mask;
393164426Ssam	int i;
394164426Ssam
395164426Ssam	mask = 0;
396164426Ssam	for (i = rman_get_start(res); i <= rman_get_end(res); i++)
397164426Ssam		mask |= 1 << i;
398164426Ssam	intr_enabled &= ~mask;
399164426Ssam	ixp425_set_intrmask();
400164426Ssam
401164426Ssam	return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, res, cookie));
402164426Ssam}
403164426Ssam
404164426Ssamstatic device_method_t ixp425_methods[] = {
405164426Ssam	/* Device interface */
406164426Ssam	DEVMETHOD(device_probe, ixp425_probe),
407164426Ssam	DEVMETHOD(device_attach, ixp425_attach),
408164426Ssam	DEVMETHOD(device_identify, ixp425_identify),
409164426Ssam
410164426Ssam	/* Bus interface */
411169952Ssam	DEVMETHOD(bus_add_child, ixp425_add_child),
412169952Ssam	DEVMETHOD(bus_hinted_child, ixp425_hinted_child),
413169952Ssam	DEVMETHOD(bus_read_ivar, ixp425_read_ivar),
414169952Ssam
415164426Ssam	DEVMETHOD(bus_alloc_resource, ixp425_alloc_resource),
416164426Ssam	DEVMETHOD(bus_setup_intr, ixp425_setup_intr),
417164426Ssam	DEVMETHOD(bus_teardown_intr, ixp425_teardown_intr),
418164426Ssam
419164426Ssam	{0, 0},
420164426Ssam};
421164426Ssam
422164426Ssamstatic driver_t ixp425_driver = {
423164426Ssam	"ixp",
424164426Ssam	ixp425_methods,
425164426Ssam	sizeof(struct ixp425_softc),
426164426Ssam};
427164426Ssamstatic devclass_t ixp425_devclass;
428164426Ssam
429164426SsamDRIVER_MODULE(ixp, nexus, ixp425_driver, ixp425_devclass, 0, 0);
430