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 "opt_platform.h"
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
35 #include <sys/kernel.h>
36 #include <sys/malloc.h>
37 #include <sys/module.h>
40 #include <vm/vm_kern.h>
42 #include <vm/vm_page.h>
43 #include <vm/vm_extern.h>
45 #define _ARM32_BUS_DMA_PRIVATE
46 #include <machine/bus.h>
47 #include <machine/devmap.h>
48 #include <machine/intr.h>
50 #include <arm/at91/at91var.h>
51 #include <arm/at91/at91_pmcvar.h>
52 #include <arm/at91/at91_aicreg.h>
54 uint32_t at91_master_clock;
57 at91_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
58 bus_space_handle_t *bshp)
63 if (pa >= AT91_PA_BASE + 0xff00000) {
64 *bshp = bpa - AT91_PA_BASE + AT91_BASE;
67 if (pa >= AT91_BASE + 0xff00000) {
71 endpa = round_page(bpa + size);
73 *bshp = (vm_offset_t)pmap_mapdev(pa, endpa - pa) + (bpa - pa);
79 at91_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size)
81 vm_offset_t va, endva;
85 va = trunc_page((vm_offset_t)t);
86 if (va >= AT91_BASE && va <= AT91_BASE + 0xff00000)
88 endva = round_page((vm_offset_t)t + size);
90 /* Free the kernel virtual mapping. */
91 kva_free(va, endva - va);
95 at91_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
96 bus_size_t size, bus_space_handle_t *nbshp)
99 *nbshp = bsh + offset;
104 at91_barrier(void *t, bus_space_handle_t bsh, bus_size_t size, bus_size_t b,
109 struct arm32_dma_range *
110 bus_dma_get_range(void)
117 bus_dma_get_range_nb(void)
123 bs_protos(generic_armv4);
125 struct bus_space at91_bs_tag = {
129 /* mapping/unmapping */
134 /* allocation/deallocation */
143 generic_armv4_bs_r_2,
149 generic_armv4_bs_rm_2,
155 generic_armv4_bs_rr_2,
161 generic_armv4_bs_w_2,
167 generic_armv4_bs_wm_2,
173 generic_armv4_bs_wr_2,
185 generic_armv4_bs_sr_2,
191 generic_armv4_bs_c_2,
195 /* read (single) stream */
197 generic_armv4_bs_r_2,
201 /* read multiple stream */
203 generic_armv4_bs_rm_2,
207 /* read region stream */
209 generic_armv4_bs_rr_2,
213 /* write (single) stream */
215 generic_armv4_bs_w_2,
219 /* write multiple stream */
221 generic_armv4_bs_wm_2,
225 /* write region stream */
227 generic_armv4_bs_wr_2,
234 static struct at91_softc *at91_softc;
236 static void at91_eoi(void *);
239 at91_probe(device_t dev)
242 device_set_desc(dev, soc_info.name);
243 return (BUS_PROBE_NOWILDCARD);
247 at91_identify(driver_t *drv, device_t parent)
250 BUS_ADD_CHILD(parent, 0, "atmelarm", 0);
254 at91_cpu_add_builtin_children(device_t dev, const struct cpu_devs *walker)
258 for (i = 1; walker->name; i++, walker++) {
259 at91_add_child(dev, i, walker->name, walker->unit,
260 walker->mem_base, walker->mem_len, walker->irq0,
261 walker->irq1, walker->irq2);
266 at91_attach(device_t dev)
268 struct at91_softc *sc = device_get_softc(dev);
270 arm_post_filter = at91_eoi;
273 sc->sc_st = &at91_bs_tag;
274 sc->sc_sh = AT91_BASE;
275 sc->sc_aic_sh = AT91_BASE + AT91_SYS_BASE;
278 sc->sc_irq_rman.rm_type = RMAN_ARRAY;
279 sc->sc_irq_rman.rm_descr = "AT91 IRQs";
280 if (rman_init(&sc->sc_irq_rman) != 0 ||
281 rman_manage_region(&sc->sc_irq_rman, 1, 31) != 0)
282 panic("at91_attach: failed to set up IRQ rman");
284 sc->sc_mem_rman.rm_type = RMAN_ARRAY;
285 sc->sc_mem_rman.rm_descr = "AT91 Memory";
286 if (rman_init(&sc->sc_mem_rman) != 0)
287 panic("at91_attach: failed to set up memory rman");
289 * Manage the physical space, defined as being everything that isn't
292 if (rman_manage_region(&sc->sc_mem_rman, 0, PHYSADDR - 1) != 0)
293 panic("at91_attach: failed to set up memory rman");
294 if (rman_manage_region(&sc->sc_mem_rman, PHYSADDR + (256 << 20),
296 panic("at91_attach: failed to set up memory rman");
299 * Add this device's children...
301 at91_cpu_add_builtin_children(dev, soc_info.soc_data->soc_children);
302 soc_info.soc_data->soc_clock_init();
304 bus_generic_probe(dev);
305 bus_generic_attach(dev);
306 enable_interrupts(I32_bit | F32_bit);
310 static struct resource *
311 at91_alloc_resource(device_t dev, device_t child, int type, int *rid,
312 u_long start, u_long end, u_long count, u_int flags)
314 struct at91_softc *sc = device_get_softc(dev);
315 struct resource_list_entry *rle;
316 struct at91_ivar *ivar = device_get_ivars(child);
317 struct resource_list *rl = &ivar->resources;
318 bus_space_handle_t bsh;
320 if (device_get_parent(child) != dev)
321 return (BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
322 type, rid, start, end, count, flags));
324 rle = resource_list_find(rl, type, *rid);
328 panic("Resource rid %d type %d already in use", *rid, type);
329 if (start == 0UL && end == ~0UL) {
331 count = ulmax(count, rle->count);
332 end = ulmax(rle->end, start + count - 1);
337 rle->res = rman_reserve_resource(&sc->sc_irq_rman,
338 start, end, count, flags, child);
341 rle->res = rman_reserve_resource(&sc->sc_mem_rman,
342 start, end, count, flags, child);
343 if (rle->res != NULL) {
344 bus_space_map(&at91_bs_tag, start,
345 rman_get_size(rle->res), 0, &bsh);
346 rman_set_bustag(rle->res, &at91_bs_tag);
347 rman_set_bushandle(rle->res, bsh);
352 rle->start = rman_get_start(rle->res);
353 rle->end = rman_get_end(rle->res);
355 rman_set_rid(rle->res, *rid);
360 static struct resource_list *
361 at91_get_resource_list(device_t dev, device_t child)
363 struct at91_ivar *ivar;
365 ivar = device_get_ivars(child);
366 return (&(ivar->resources));
370 at91_release_resource(device_t dev, device_t child, int type,
371 int rid, struct resource *r)
373 struct resource_list *rl;
374 struct resource_list_entry *rle;
376 rl = at91_get_resource_list(dev, child);
379 rle = resource_list_find(rl, type, rid);
382 rman_release_resource(r);
388 at91_setup_intr(device_t dev, device_t child,
389 struct resource *ires, int flags, driver_filter_t *filt,
390 driver_intr_t *intr, void *arg, void **cookiep)
394 if (rman_get_start(ires) == AT91_IRQ_SYSTEM && filt == NULL)
395 panic("All system interrupt ISRs must be FILTER");
396 error = BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags,
397 filt, intr, arg, cookiep);
405 at91_teardown_intr(device_t dev, device_t child, struct resource *res,
408 struct at91_softc *sc = device_get_softc(dev);
410 bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_IDCR,
411 1 << rman_get_start(res));
412 return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, res, cookie));
416 at91_activate_resource(device_t bus, device_t child, int type, int rid,
423 if (type == SYS_RES_MEMORY) {
424 error = bus_space_map(rman_get_bustag(r),
425 rman_get_bushandle(r), rman_get_size(r), 0, &p);
428 rman_set_bushandle(r, p);
431 return (rman_activate_resource(r));
435 at91_print_child(device_t dev, device_t child)
437 struct at91_ivar *ivars;
438 struct resource_list *rl;
441 ivars = device_get_ivars(child);
442 rl = &ivars->resources;
444 retval += bus_print_child_header(dev, child);
446 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
447 retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
448 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
449 if (device_get_flags(dev))
450 retval += printf(" flags %#x", device_get_flags(dev));
452 retval += bus_print_child_footer(dev, child);
458 at91_eoi(void *unused)
460 bus_space_write_4(at91_softc->sc_st, at91_softc->sc_aic_sh,
465 at91_add_child(device_t dev, int prio, const char *name, int unit,
466 bus_addr_t addr, bus_size_t size, int irq0, int irq1, int irq2)
469 struct at91_ivar *ivar;
471 kid = device_add_child_ordered(dev, prio, name, unit);
473 printf("Can't add child %s%d ordered\n", name, unit);
476 ivar = malloc(sizeof(*ivar), M_DEVBUF, M_NOWAIT | M_ZERO);
478 device_delete_child(dev, kid);
479 printf("Can't add alloc ivar\n");
482 device_set_ivars(kid, ivar);
483 resource_list_init(&ivar->resources);
485 bus_set_resource(kid, SYS_RES_IRQ, 0, irq0, 1);
486 if (irq0 != AT91_IRQ_SYSTEM)
487 at91_pmc_clock_add(device_get_nameunit(kid), irq0, 0);
490 bus_set_resource(kid, SYS_RES_IRQ, 1, irq1, 1);
492 bus_set_resource(kid, SYS_RES_IRQ, 2, irq2, 1);
494 * Special case for on-board devices. These have their address
495 * defined relative to AT91_PA_BASE in all the register files we
496 * have. We could change this, but that's a lot of effort which
497 * will be obsoleted when FDT arrives.
499 if (addr != 0 && addr < 0x10000000 && addr >= 0x0f000000)
500 addr += AT91_PA_BASE;
502 bus_set_resource(kid, SYS_RES_MEMORY, 0, addr, size);
505 static device_method_t at91_methods[] = {
506 DEVMETHOD(device_probe, at91_probe),
507 DEVMETHOD(device_attach, at91_attach),
508 DEVMETHOD(device_identify, at91_identify),
510 DEVMETHOD(bus_alloc_resource, at91_alloc_resource),
511 DEVMETHOD(bus_setup_intr, at91_setup_intr),
512 DEVMETHOD(bus_teardown_intr, at91_teardown_intr),
513 DEVMETHOD(bus_activate_resource, at91_activate_resource),
514 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
515 DEVMETHOD(bus_get_resource_list,at91_get_resource_list),
516 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
517 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
518 DEVMETHOD(bus_release_resource, at91_release_resource),
519 DEVMETHOD(bus_print_child, at91_print_child),
524 static driver_t at91_driver = {
527 sizeof(struct at91_softc),
530 static devclass_t at91_devclass;
532 DRIVER_MODULE(atmelarm, nexus, at91_driver, at91_devclass, 0, 0);