2 * Copyright (c) 2005 Olivier Houchard. All rights reserved.
3 * Copyright (c) 2010 Greg Ansley. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/systm.h>
33 #include <sys/kernel.h>
34 #include <sys/malloc.h>
35 #include <sys/module.h>
38 #include <vm/vm_kern.h>
40 #include <vm/vm_page.h>
41 #include <vm/vm_extern.h>
43 #define _ARM32_BUS_DMA_PRIVATE
44 #include <machine/bus.h>
45 #include <machine/intr.h>
47 #include <arm/at91/at91var.h>
48 #include <arm/at91/at91_pmcvar.h>
49 #include <arm/at91/at91_aicreg.h>
51 static struct at91_softc *at91_softc;
53 static void at91_eoi(void *);
55 extern const struct pmap_devmap at91_devmap[];
57 uint32_t at91_master_clock;
60 at91_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
61 bus_space_handle_t *bshp)
66 if (pa >= AT91_PA_BASE + 0xff00000) {
67 *bshp = pa - AT91_PA_BASE + AT91_BASE;
70 if (pa >= AT91_BASE + 0xff00000)
72 endpa = round_page(bpa + size);
74 *bshp = (vm_offset_t)pmap_mapdev(pa, endpa - pa);
80 at91_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size)
82 vm_offset_t va, endva;
84 va = trunc_page((vm_offset_t)t);
85 endva = va + round_page(size);
87 /* Free the kernel virtual mapping. */
88 kva_free(va, endva - va);
92 at91_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
93 bus_size_t size, bus_space_handle_t *nbshp)
96 *nbshp = bsh + offset;
101 at91_barrier(void *t, bus_space_handle_t bsh, bus_size_t size, bus_size_t b,
106 struct arm32_dma_range *
107 bus_dma_get_range(void)
114 bus_dma_get_range_nb(void)
120 bs_protos(generic_armv4);
122 struct bus_space at91_bs_tag = {
126 /* mapping/unmapping */
131 /* allocation/deallocation */
140 generic_armv4_bs_r_2,
146 generic_armv4_bs_rm_2,
152 generic_armv4_bs_rr_2,
158 generic_armv4_bs_w_2,
164 generic_armv4_bs_wm_2,
170 generic_armv4_bs_wr_2,
182 generic_armv4_bs_sr_2,
188 generic_armv4_bs_c_2,
192 /* read (single) stream */
194 generic_armv4_bs_r_2,
198 /* read multiple stream */
200 generic_armv4_bs_rm_2,
204 /* read region stream */
206 generic_armv4_bs_rr_2,
210 /* write (single) stream */
212 generic_armv4_bs_w_2,
216 /* write multiple stream */
218 generic_armv4_bs_wm_2,
222 /* write region stream */
224 generic_armv4_bs_wr_2,
230 at91_probe(device_t dev)
233 device_set_desc(dev, "AT91 device bus");
234 arm_post_filter = at91_eoi;
239 at91_identify(driver_t *drv, device_t parent)
242 BUS_ADD_CHILD(parent, 0, "atmelarm", 0);
246 at91_cpu_add_builtin_children(device_t dev, const struct cpu_devs *walker)
250 for (i = 1; walker->name; i++, walker++) {
251 at91_add_child(dev, i, walker->name, walker->unit,
252 walker->mem_base, walker->mem_len, walker->irq0,
253 walker->irq1, walker->irq2);
258 at91_attach(device_t dev)
260 struct at91_softc *sc = device_get_softc(dev);
261 const struct pmap_devmap *pdevmap;
265 sc->sc_st = &at91_bs_tag;
266 sc->sc_sh = AT91_BASE;
267 sc->sc_aic_sh = AT91_BASE + AT91_SYS_BASE;
270 sc->sc_irq_rman.rm_type = RMAN_ARRAY;
271 sc->sc_irq_rman.rm_descr = "AT91 IRQs";
272 if (rman_init(&sc->sc_irq_rman) != 0 ||
273 rman_manage_region(&sc->sc_irq_rman, 1, 31) != 0)
274 panic("at91_attach: failed to set up IRQ rman");
276 sc->sc_mem_rman.rm_type = RMAN_ARRAY;
277 sc->sc_mem_rman.rm_descr = "AT91 Memory";
278 if (rman_init(&sc->sc_mem_rman) != 0)
279 panic("at91_attach: failed to set up memory rman");
280 for (pdevmap = at91_devmap; pdevmap->pd_va != 0; pdevmap++) {
281 if (rman_manage_region(&sc->sc_mem_rman, pdevmap->pd_va,
282 pdevmap->pd_va + pdevmap->pd_size - 1) != 0)
283 panic("at91_attach: failed to set up memory rman");
287 * Setup the interrupt table.
289 if (soc_info.soc_data == NULL || soc_info.soc_data->soc_irq_prio == NULL)
290 panic("Interrupt priority table missing\n");
291 for (i = 0; i < 32; i++) {
292 bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SVR +
295 bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SMR + i * 4,
296 soc_info.soc_data->soc_irq_prio[i]);
298 bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_EOICR,
302 bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SPU, 32);
304 bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_DCR, 0);
305 /* Disable and clear all interrupts. */
306 bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_IDCR, 0xffffffff);
307 bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_ICCR, 0xffffffff);
310 * Add this device's children...
312 at91_cpu_add_builtin_children(dev, soc_info.soc_data->soc_children);
313 soc_info.soc_data->soc_clock_init();
315 bus_generic_probe(dev);
316 bus_generic_attach(dev);
317 enable_interrupts(I32_bit | F32_bit);
321 static struct resource *
322 at91_alloc_resource(device_t dev, device_t child, int type, int *rid,
323 u_long start, u_long end, u_long count, u_int flags)
325 struct at91_softc *sc = device_get_softc(dev);
326 struct resource_list_entry *rle;
327 struct at91_ivar *ivar = device_get_ivars(child);
328 struct resource_list *rl = &ivar->resources;
330 if (device_get_parent(child) != dev)
331 return (BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
332 type, rid, start, end, count, flags));
334 rle = resource_list_find(rl, type, *rid);
338 panic("Resource rid %d type %d already in use", *rid, type);
339 if (start == 0UL && end == ~0UL) {
341 count = ulmax(count, rle->count);
342 end = ulmax(rle->end, start + count - 1);
347 rle->res = rman_reserve_resource(&sc->sc_irq_rman,
348 start, end, count, flags, child);
351 rle->res = rman_reserve_resource(&sc->sc_mem_rman,
352 start, end, count, flags, child);
353 if (rle->res != NULL) {
354 rman_set_bustag(rle->res, &at91_bs_tag);
355 rman_set_bushandle(rle->res, start);
360 rle->start = rman_get_start(rle->res);
361 rle->end = rman_get_end(rle->res);
363 rman_set_rid(rle->res, *rid);
368 static struct resource_list *
369 at91_get_resource_list(device_t dev, device_t child)
371 struct at91_ivar *ivar;
373 ivar = device_get_ivars(child);
374 return (&(ivar->resources));
378 at91_release_resource(device_t dev, device_t child, int type,
379 int rid, struct resource *r)
381 struct resource_list *rl;
382 struct resource_list_entry *rle;
384 rl = at91_get_resource_list(dev, child);
387 rle = resource_list_find(rl, type, rid);
390 rman_release_resource(r);
396 at91_setup_intr(device_t dev, device_t child,
397 struct resource *ires, int flags, driver_filter_t *filt,
398 driver_intr_t *intr, void *arg, void **cookiep)
402 if (rman_get_start(ires) == AT91_IRQ_SYSTEM && filt == NULL)
403 panic("All system interrupt ISRs must be FILTER");
404 error = BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags,
405 filt, intr, arg, cookiep);
413 at91_teardown_intr(device_t dev, device_t child, struct resource *res,
416 struct at91_softc *sc = device_get_softc(dev);
418 bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_IDCR,
419 1 << rman_get_start(res));
420 return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, res, cookie));
424 at91_activate_resource(device_t bus, device_t child, int type, int rid,
431 if (type == SYS_RES_MEMORY) {
432 error = bus_space_map(rman_get_bustag(r),
433 rman_get_bushandle(r), rman_get_size(r), 0, &p);
436 rman_set_bushandle(r, p);
439 return (rman_activate_resource(r));
443 at91_print_child(device_t dev, device_t child)
445 struct at91_ivar *ivars;
446 struct resource_list *rl;
449 ivars = device_get_ivars(child);
450 rl = &ivars->resources;
452 retval += bus_print_child_header(dev, child);
454 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
455 retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
456 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
457 if (device_get_flags(dev))
458 retval += printf(" flags %#x", device_get_flags(dev));
460 retval += bus_print_child_footer(dev, child);
466 arm_mask_irq(uintptr_t nb)
469 bus_space_write_4(at91_softc->sc_st,
470 at91_softc->sc_aic_sh, IC_IDCR, 1 << nb);
474 arm_get_next_irq(int last __unused)
479 irq = bus_space_read_4(at91_softc->sc_st,
480 at91_softc->sc_aic_sh, IC_IVR);
481 status = bus_space_read_4(at91_softc->sc_st,
482 at91_softc->sc_aic_sh, IC_ISR);
484 bus_space_write_4(at91_softc->sc_st,
485 at91_softc->sc_aic_sh, IC_EOICR, 1);
492 arm_unmask_irq(uintptr_t nb)
495 bus_space_write_4(at91_softc->sc_st,
496 at91_softc->sc_aic_sh, IC_IECR, 1 << nb);
497 bus_space_write_4(at91_softc->sc_st, at91_softc->sc_aic_sh,
502 at91_eoi(void *unused)
504 bus_space_write_4(at91_softc->sc_st, at91_softc->sc_aic_sh,
509 at91_add_child(device_t dev, int prio, const char *name, int unit,
510 bus_addr_t addr, bus_size_t size, int irq0, int irq1, int irq2)
513 struct at91_ivar *ivar;
515 kid = device_add_child_ordered(dev, prio, name, unit);
517 printf("Can't add child %s%d ordered\n", name, unit);
520 ivar = malloc(sizeof(*ivar), M_DEVBUF, M_NOWAIT | M_ZERO);
522 device_delete_child(dev, kid);
523 printf("Can't add alloc ivar\n");
526 device_set_ivars(kid, ivar);
527 resource_list_init(&ivar->resources);
529 bus_set_resource(kid, SYS_RES_IRQ, 0, irq0, 1);
530 if (irq0 != AT91_IRQ_SYSTEM)
531 at91_pmc_clock_add(device_get_nameunit(kid), irq0, 0);
534 bus_set_resource(kid, SYS_RES_IRQ, 1, irq1, 1);
536 bus_set_resource(kid, SYS_RES_IRQ, 2, irq2, 1);
537 if (addr != 0 && addr < AT91_BASE)
540 bus_set_resource(kid, SYS_RES_MEMORY, 0, addr, size);
543 static device_method_t at91_methods[] = {
544 DEVMETHOD(device_probe, at91_probe),
545 DEVMETHOD(device_attach, at91_attach),
546 DEVMETHOD(device_identify, at91_identify),
548 DEVMETHOD(bus_alloc_resource, at91_alloc_resource),
549 DEVMETHOD(bus_setup_intr, at91_setup_intr),
550 DEVMETHOD(bus_teardown_intr, at91_teardown_intr),
551 DEVMETHOD(bus_activate_resource, at91_activate_resource),
552 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
553 DEVMETHOD(bus_get_resource_list,at91_get_resource_list),
554 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
555 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
556 DEVMETHOD(bus_release_resource, at91_release_resource),
557 DEVMETHOD(bus_print_child, at91_print_child),
562 static driver_t at91_driver = {
565 sizeof(struct at91_softc),
568 static devclass_t at91_devclass;
570 DRIVER_MODULE(atmelarm, nexus, at91_driver, at91_devclass, 0, 0);