1 /* $NetBSD: ixp425.c,v 1.10 2005/12/11 12:16:51 christos Exp $ */
5 * Ichiro FUKUHARA <ichiro@ichiro.org>.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Ichiro FUKUHARA.
19 * 4. The name of the company nor the name of the author may be used to
20 * endorse or promote products derived from this software without specific
21 * prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR
27 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
39 #define _ARM32_BUS_DMA_PRIVATE
40 #include <sys/param.h>
41 #include <sys/systm.h>
43 #include <sys/kernel.h>
44 #include <sys/module.h>
45 #include <sys/malloc.h>
47 #include <machine/bus.h>
48 #include <machine/intr.h>
52 #include <arm/xscale/ixp425/ixp425reg.h>
53 #include <arm/xscale/ixp425/ixp425var.h>
54 #include <arm/xscale/ixp425/ixp425_intr.h>
56 #include <dev/pci/pcireg.h>
58 volatile uint32_t intr_enabled;
59 uint32_t intr_steer = 0;
61 struct ixp425_softc *ixp425_softc = NULL;
63 static int ixp425_probe(device_t);
64 static void ixp425_identify(driver_t *, device_t);
65 static int ixp425_attach(device_t);
72 { IXP425_IO_HWBASE, IXP425_IO_SIZE, IXP425_IO_VBASE },
73 { IXP425_EXP_HWBASE, IXP425_EXP_SIZE, IXP425_EXP_VBASE },
74 { IXP425_PCI_HWBASE, IXP425_PCI_SIZE, IXP425_PCI_VBASE },
75 { IXP425_PCI_MEM_HWBASE,IXP425_PCI_MEM_SIZE, IXP425_PCI_MEM_VBASE },
77 { IXP425_PCI_IO_HWBASE, IXP425_PCI_IO_SIZE, IXP425_PCI_IO_VBASE },
79 { IXP425_MCU_HWBASE, IXP425_MCU_SIZE, IXP425_MCU_VBASE },
80 { IXP425_QMGR_HWBASE, IXP425_QMGR_SIZE, IXP425_QMGR_VBASE },
81 { IXP425_NPE_A_HWBASE, IXP425_NPE_A_SIZE, IXP425_NPE_A_VBASE },
82 { IXP425_NPE_B_HWBASE, IXP425_NPE_B_SIZE, IXP425_NPE_B_VBASE },
83 { IXP425_NPE_C_HWBASE, IXP425_NPE_C_SIZE, IXP425_NPE_C_VBASE },
84 { IXP425_MAC_A_HWBASE, IXP425_MAC_A_SIZE, IXP425_MAC_A_VBASE },
85 { IXP425_MAC_B_HWBASE, IXP425_MAC_B_SIZE, IXP425_MAC_B_VBASE },
86 /* Gateworks Avila IDE/CF is mapped here */
87 { IXP425_EXP_BUS_CS1_HWBASE, IXP425_EXP_BUS_SIZE,
88 IXP425_EXP_BUS_CS1_VBASE },
89 { IXP425_EXP_BUS_CS2_HWBASE, IXP425_EXP_BUS_SIZE,
90 IXP425_EXP_BUS_CS2_VBASE },
91 /* ADI Pronghorn Metro IDE/CF is mapped here */
92 { IXP425_EXP_BUS_CS3_HWBASE, IXP425_EXP_BUS_SIZE,
93 IXP425_EXP_BUS_CS3_VBASE },
94 { IXP425_EXP_BUS_CS4_HWBASE, IXP425_EXP_BUS_SIZE,
95 IXP425_EXP_BUS_CS4_VBASE },
99 getvbase(uint32_t hwbase, uint32_t size, uint32_t *vbase)
103 for (i = 0; i < sizeof hwvtrans / sizeof *hwvtrans; i++) {
104 if (hwbase >= hwvtrans[i].hwbase &&
105 hwbase + size <= hwvtrans[i].hwbase + hwvtrans[i].size) {
106 *vbase = hwbase - hwvtrans[i].hwbase + hwvtrans[i].vbase;
114 struct arm32_dma_range *
115 bus_dma_get_range(void)
121 bus_dma_get_range_nb(void)
126 static __inline u_int32_t
127 ixp425_irq2gpio_bit(int irq)
130 static const uint8_t int2gpio[32] __attribute__ ((aligned(32))) = {
131 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* INT#0 -> INT#5 */
132 0x00, 0x01, /* GPIO#0 -> GPIO#1 */
133 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* INT#8 -> INT#13 */
134 0xff, 0xff, 0xff, 0xff, 0xff, /* INT#14 -> INT#18 */
135 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* GPIO#2 -> GPIO#7 */
136 0x08, 0x09, 0x0a, 0x0b, 0x0c, /* GPIO#8 -> GPIO#12 */
137 0xff, 0xff /* INT#30 -> INT#31 */
140 return (1U << int2gpio[irq]);
144 arm_mask_irq(uintptr_t nb)
148 i = disable_interrupts(I32_bit);
149 intr_enabled &= ~(1 << nb);
150 ixp425_set_intrmask();
151 restore_interrupts(i);
152 /*XXX; If it's a GPIO interrupt, ACK it know. Can it be a problem ?*/
153 if ((1 << nb) & IXP425_INT_GPIOMASK)
154 IXPREG(IXP425_GPIO_VBASE + IXP425_GPIO_GPISR) =
155 ixp425_irq2gpio_bit(nb);
159 arm_unmask_irq(uintptr_t nb)
163 i = disable_interrupts(I32_bit);
164 intr_enabled |= (1 << nb);
165 ixp425_set_intrmask();
166 restore_interrupts(i);
169 static __inline uint32_t
170 ixp425_irq_read(void)
172 return IXPREG(IXP425_INT_STATUS) & intr_enabled;
176 arm_get_next_irq(void)
180 if ((irq = ixp425_irq_read()))
181 return (ffs(irq) - 1);
189 bus_space_write_4(&ixp425_bs_tag, IXP425_TIMER_VBASE,
190 IXP425_OST_WDOG_KEY, OST_WDOG_KEY_MAJICK);
191 bus_space_write_4(&ixp425_bs_tag, IXP425_TIMER_VBASE,
193 bus_space_write_4(&ixp425_bs_tag, IXP425_TIMER_VBASE,
194 IXP425_OST_WDOG_ENAB, OST_WDOG_ENAB_RST_ENA |
195 OST_WDOG_ENAB_CNT_ENA);
196 printf("Reset failed!\n");
201 ixp425_identify(driver_t *driver, device_t parent)
203 BUS_ADD_CHILD(parent, 0, "ixp", 0);
207 ixp425_probe(device_t dev)
209 device_set_desc(dev, "Intel IXP425");
214 ixp425_attach(device_t dev)
216 struct ixp425_softc *sc;
218 sc = device_get_softc(dev);
219 sc->sc_iot = &ixp425_bs_tag;
220 KASSERT(ixp425_softc == NULL, ("ixp425_attach called twice?"));
224 ixp425_set_intrmask();
225 ixp425_set_intrsteer();
227 if (bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
228 BUS_SPACE_MAXADDR, NULL, NULL, 0xffffffff, 0xff, 0xffffffff, 0,
229 NULL, NULL, &sc->sc_dmat))
230 panic("couldn't create the IXP425 dma tag !");
232 sc->sc_irq_rman.rm_type = RMAN_ARRAY;
233 sc->sc_irq_rman.rm_descr = "IXP425 IRQs";
234 if (rman_init(&sc->sc_irq_rman) != 0 ||
235 rman_manage_region(&sc->sc_irq_rman, 0, 31) != 0)
236 panic("ixp425_attach: failed to set up IRQ rman");
238 sc->sc_mem_rman.rm_type = RMAN_ARRAY;
239 sc->sc_mem_rman.rm_descr = "IXP425 Memory";
240 if (rman_init(&sc->sc_mem_rman) != 0 ||
241 rman_manage_region(&sc->sc_mem_rman, 0, ~0) != 0)
242 panic("ixp425_attach: failed to set up memory rman");
244 BUS_ADD_CHILD(dev, 0, "pcib", 0);
245 BUS_ADD_CHILD(dev, 0, "ixpclk", 0);
246 BUS_ADD_CHILD(dev, 0, "ixpiic", 0);
247 /* XXX move to hints? */
248 BUS_ADD_CHILD(dev, 0, "ixpwdog", 0);
250 /* attach wired devices via hints */
251 bus_enumerate_hinted_children(dev);
253 if (bus_space_map(sc->sc_iot, IXP425_GPIO_HWBASE, IXP425_GPIO_SIZE,
254 0, &sc->sc_gpio_ioh))
255 panic("ixp425_attach: unable to map GPIO registers");
256 if (bus_space_map(sc->sc_iot, IXP425_EXP_HWBASE, IXP425_EXP_SIZE,
258 panic("ixp425_attach: unable to map Expansion Bus registers");
260 bus_generic_probe(dev);
261 bus_generic_attach(dev);
267 ixp425_hinted_child(device_t bus, const char *dname, int dunit)
270 struct ixp425_ivar *ivar;
272 child = BUS_ADD_CHILD(bus, 0, dname, dunit);
273 ivar = IXP425_IVAR(child);
274 resource_int_value(dname, dunit, "addr", &ivar->addr);
275 resource_int_value(dname, dunit, "irq", &ivar->irq);
279 ixp425_add_child(device_t dev, int order, const char *name, int unit)
282 struct ixp425_ivar *ivar;
284 child = device_add_child_ordered(dev, order, name, unit);
287 ivar = malloc(sizeof(struct ixp425_ivar), M_DEVBUF, M_NOWAIT);
289 device_delete_child(dev, child);
294 device_set_ivars(child, ivar);
299 ixp425_read_ivar(device_t bus, device_t child, int which, u_char *result)
301 struct ixp425_ivar *ivar = IXP425_IVAR(child);
304 case IXP425_IVAR_ADDR:
305 if (ivar->addr != 0) {
306 *(uint32_t *)result = ivar->addr;
310 case IXP425_IVAR_IRQ:
311 if (ivar->irq != -1) {
312 *(int *)result = ivar->irq;
320 static struct resource *
321 ixp425_alloc_resource(device_t dev, device_t child, int type, int *rid,
322 u_long start, u_long end, u_long count, u_int flags)
324 struct ixp425_softc *sc = device_get_softc(dev);
327 uint32_t vbase, addr;
332 rmanp = &sc->sc_irq_rman;
333 /* override per hints */
334 if (BUS_READ_IVAR(dev, child, IXP425_IVAR_IRQ, &irq) == 0)
336 rv = rman_reserve_resource(rmanp, start, end, count,
339 rman_set_rid(rv, *rid);
343 rmanp = &sc->sc_mem_rman;
344 /* override per hints */
345 if (BUS_READ_IVAR(dev, child, IXP425_IVAR_ADDR, &addr) == 0) {
347 end = start + 0x1000; /* XXX */
349 if (getvbase(start, end - start, &vbase))
351 rv = rman_reserve_resource(rmanp, start, end, count,
354 rman_set_rid(rv, *rid);
355 if (strcmp(device_get_name(child), "uart") == 0)
356 rman_set_bustag(rv, &ixp425_a4x_bs_tag);
358 rman_set_bustag(rv, sc->sc_iot);
359 rman_set_bushandle(rv, vbase);
370 ixp425_setup_intr(device_t dev, device_t child,
371 struct resource *ires, int flags, driver_filter_t *filt,
372 driver_intr_t *intr, void *arg, void **cookiep)
377 BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, filt, intr,
381 for (i = rman_get_start(ires); i <= rman_get_end(ires); i++)
383 intr_enabled |= mask;
384 ixp425_set_intrmask();
390 ixp425_teardown_intr(device_t dev, device_t child, struct resource *res,
397 for (i = rman_get_start(res); i <= rman_get_end(res); i++)
399 intr_enabled &= ~mask;
400 ixp425_set_intrmask();
402 return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, res, cookie));
405 static device_method_t ixp425_methods[] = {
406 /* Device interface */
407 DEVMETHOD(device_probe, ixp425_probe),
408 DEVMETHOD(device_attach, ixp425_attach),
409 DEVMETHOD(device_identify, ixp425_identify),
412 DEVMETHOD(bus_add_child, ixp425_add_child),
413 DEVMETHOD(bus_hinted_child, ixp425_hinted_child),
414 DEVMETHOD(bus_read_ivar, ixp425_read_ivar),
416 DEVMETHOD(bus_alloc_resource, ixp425_alloc_resource),
417 DEVMETHOD(bus_setup_intr, ixp425_setup_intr),
418 DEVMETHOD(bus_teardown_intr, ixp425_teardown_intr),
423 static driver_t ixp425_driver = {
426 sizeof(struct ixp425_softc),
428 static devclass_t ixp425_devclass;
430 DRIVER_MODULE(ixp, nexus, ixp425_driver, ixp425_devclass, 0, 0);