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 #include <machine/armreg.h>
46 #define _ARM32_BUS_DMA_PRIVATE
47 #include <machine/bus.h>
48 #include <machine/devmap.h>
49 #include <machine/intr.h>
51 #include <arm/at91/at91var.h>
52 #include <arm/at91/at91_pmcvar.h>
53 #include <arm/at91/at91_aicreg.h>
55 uint32_t at91_master_clock;
58 at91_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
59 bus_space_handle_t *bshp)
64 if (pa >= AT91_PA_BASE + 0xff00000) {
65 *bshp = bpa - AT91_PA_BASE + AT91_BASE;
68 if (pa >= AT91_BASE + 0xff00000) {
72 endpa = round_page(bpa + size);
74 *bshp = (vm_offset_t)pmap_mapdev(pa, endpa - pa) + (bpa - pa);
80 at91_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size)
82 vm_offset_t va, endva;
86 va = trunc_page((vm_offset_t)t);
87 if (va >= AT91_BASE && va <= AT91_BASE + 0xff00000)
89 endva = round_page((vm_offset_t)t + size);
91 /* Free the kernel virtual mapping. */
92 kva_free(va, endva - va);
96 at91_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
97 bus_size_t size, bus_space_handle_t *nbshp)
100 *nbshp = bsh + offset;
105 at91_barrier(void *t, bus_space_handle_t bsh, bus_size_t size, bus_size_t b,
110 struct arm32_dma_range *
111 bus_dma_get_range(void)
118 bus_dma_get_range_nb(void)
124 bs_protos(generic_armv4);
126 struct bus_space at91_bs_tag = {
130 /* mapping/unmapping */
135 /* allocation/deallocation */
144 generic_armv4_bs_r_2,
150 generic_armv4_bs_rm_2,
156 generic_armv4_bs_rr_2,
162 generic_armv4_bs_w_2,
168 generic_armv4_bs_wm_2,
174 generic_armv4_bs_wr_2,
186 generic_armv4_bs_sr_2,
192 generic_armv4_bs_c_2,
196 /* read (single) stream */
198 generic_armv4_bs_r_2,
202 /* read multiple stream */
204 generic_armv4_bs_rm_2,
208 /* read region stream */
210 generic_armv4_bs_rr_2,
214 /* write (single) stream */
216 generic_armv4_bs_w_2,
220 /* write multiple stream */
222 generic_armv4_bs_wm_2,
226 /* write region stream */
228 generic_armv4_bs_wr_2,
235 static struct at91_softc *at91_softc;
237 static void at91_eoi(void *);
240 at91_probe(device_t dev)
243 device_set_desc(dev, soc_info.name);
244 return (BUS_PROBE_NOWILDCARD);
248 at91_identify(driver_t *drv, device_t parent)
251 BUS_ADD_CHILD(parent, 0, "atmelarm", 0);
255 at91_cpu_add_builtin_children(device_t dev, const struct cpu_devs *walker)
259 for (i = 0; walker->name; i++, walker++) {
260 at91_add_child(dev, i, walker->name, walker->unit,
261 walker->mem_base, walker->mem_len, walker->irq0,
262 walker->irq1, walker->irq2);
267 at91_attach(device_t dev)
269 struct at91_softc *sc = device_get_softc(dev);
271 arm_post_filter = at91_eoi;
274 sc->sc_st = &at91_bs_tag;
275 sc->sc_sh = AT91_BASE;
276 sc->sc_aic_sh = AT91_BASE + AT91_SYS_BASE;
279 sc->sc_irq_rman.rm_type = RMAN_ARRAY;
280 sc->sc_irq_rman.rm_descr = "AT91 IRQs";
281 if (rman_init(&sc->sc_irq_rman) != 0 ||
282 rman_manage_region(&sc->sc_irq_rman, 1, 31) != 0)
283 panic("at91_attach: failed to set up IRQ rman");
285 sc->sc_mem_rman.rm_type = RMAN_ARRAY;
286 sc->sc_mem_rman.rm_descr = "AT91 Memory";
287 if (rman_init(&sc->sc_mem_rman) != 0)
288 panic("at91_attach: failed to set up memory rman");
290 * Manage the physical space, defined as being everything that isn't
293 if (rman_manage_region(&sc->sc_mem_rman, 0, PHYSADDR - 1) != 0)
294 panic("at91_attach: failed to set up memory rman");
295 if (rman_manage_region(&sc->sc_mem_rman, PHYSADDR + (256 << 20),
297 panic("at91_attach: failed to set up memory rman");
300 * Add this device's children...
302 at91_cpu_add_builtin_children(dev, soc_info.soc_data->soc_children);
303 soc_info.soc_data->soc_clock_init();
305 bus_generic_probe(dev);
306 bus_generic_attach(dev);
307 enable_interrupts(PSR_I | PSR_F);
311 static struct resource *
312 at91_alloc_resource(device_t dev, device_t child, int type, int *rid,
313 u_long start, u_long end, u_long count, u_int flags)
315 struct at91_softc *sc = device_get_softc(dev);
316 struct resource_list_entry *rle;
317 struct at91_ivar *ivar = device_get_ivars(child);
318 struct resource_list *rl = &ivar->resources;
319 bus_space_handle_t bsh;
321 if (device_get_parent(child) != dev)
322 return (BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
323 type, rid, start, end, count, flags));
325 rle = resource_list_find(rl, type, *rid);
329 panic("Resource rid %d type %d already in use", *rid, type);
330 if (start == 0UL && end == ~0UL) {
332 count = ulmax(count, rle->count);
333 end = ulmax(rle->end, start + count - 1);
338 rle->res = rman_reserve_resource(&sc->sc_irq_rman,
339 start, end, count, flags, child);
342 rle->res = rman_reserve_resource(&sc->sc_mem_rman,
343 start, end, count, flags, child);
344 if (rle->res != NULL) {
345 bus_space_map(&at91_bs_tag, start,
346 rman_get_size(rle->res), 0, &bsh);
347 rman_set_bustag(rle->res, &at91_bs_tag);
348 rman_set_bushandle(rle->res, bsh);
353 rle->start = rman_get_start(rle->res);
354 rle->end = rman_get_end(rle->res);
356 rman_set_rid(rle->res, *rid);
361 static struct resource_list *
362 at91_get_resource_list(device_t dev, device_t child)
364 struct at91_ivar *ivar;
366 ivar = device_get_ivars(child);
367 return (&(ivar->resources));
371 at91_release_resource(device_t dev, device_t child, int type,
372 int rid, struct resource *r)
374 struct resource_list *rl;
375 struct resource_list_entry *rle;
377 rl = at91_get_resource_list(dev, child);
380 rle = resource_list_find(rl, type, rid);
383 rman_release_resource(r);
389 at91_setup_intr(device_t dev, device_t child,
390 struct resource *ires, int flags, driver_filter_t *filt,
391 driver_intr_t *intr, void *arg, void **cookiep)
395 if (rman_get_start(ires) == AT91_IRQ_SYSTEM && filt == NULL)
396 panic("All system interrupt ISRs must be FILTER");
397 error = BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags,
398 filt, intr, arg, cookiep);
406 at91_teardown_intr(device_t dev, device_t child, struct resource *res,
409 struct at91_softc *sc = device_get_softc(dev);
411 bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_IDCR,
412 1 << rman_get_start(res));
413 return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, res, cookie));
417 at91_activate_resource(device_t bus, device_t child, int type, int rid,
424 if (type == SYS_RES_MEMORY) {
425 error = bus_space_map(rman_get_bustag(r),
426 rman_get_bushandle(r), rman_get_size(r), 0, &p);
429 rman_set_bushandle(r, p);
432 return (rman_activate_resource(r));
436 at91_print_child(device_t dev, device_t child)
438 struct at91_ivar *ivars;
439 struct resource_list *rl;
442 ivars = device_get_ivars(child);
443 rl = &ivars->resources;
445 retval += bus_print_child_header(dev, child);
447 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
448 retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
449 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
450 if (device_get_flags(dev))
451 retval += printf(" flags %#x", device_get_flags(dev));
453 retval += bus_print_child_footer(dev, child);
459 at91_eoi(void *unused)
461 bus_space_write_4(at91_softc->sc_st, at91_softc->sc_aic_sh,
466 at91_add_child(device_t dev, int prio, const char *name, int unit,
467 bus_addr_t addr, bus_size_t size, int irq0, int irq1, int irq2)
470 struct at91_ivar *ivar;
472 kid = device_add_child_ordered(dev, prio, name, unit);
474 printf("Can't add child %s%d ordered\n", name, unit);
477 ivar = malloc(sizeof(*ivar), M_DEVBUF, M_NOWAIT | M_ZERO);
479 device_delete_child(dev, kid);
480 printf("Can't add alloc ivar\n");
483 device_set_ivars(kid, ivar);
484 resource_list_init(&ivar->resources);
486 bus_set_resource(kid, SYS_RES_IRQ, 0, irq0, 1);
487 if (irq0 != AT91_IRQ_SYSTEM)
488 at91_pmc_clock_add(device_get_nameunit(kid), irq0, 0);
491 bus_set_resource(kid, SYS_RES_IRQ, 1, irq1, 1);
493 bus_set_resource(kid, SYS_RES_IRQ, 2, irq2, 1);
495 * Special case for on-board devices. These have their address
496 * defined relative to AT91_PA_BASE in all the register files we
497 * have. We could change this, but that's a lot of effort which
498 * will be obsoleted when FDT arrives.
500 if (addr != 0 && addr < 0x10000000 && addr >= 0x0f000000)
501 addr += AT91_PA_BASE;
503 bus_set_resource(kid, SYS_RES_MEMORY, 0, addr, size);
506 static device_method_t at91_methods[] = {
507 DEVMETHOD(device_probe, at91_probe),
508 DEVMETHOD(device_attach, at91_attach),
509 DEVMETHOD(device_identify, at91_identify),
511 DEVMETHOD(bus_alloc_resource, at91_alloc_resource),
512 DEVMETHOD(bus_setup_intr, at91_setup_intr),
513 DEVMETHOD(bus_teardown_intr, at91_teardown_intr),
514 DEVMETHOD(bus_activate_resource, at91_activate_resource),
515 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
516 DEVMETHOD(bus_get_resource_list,at91_get_resource_list),
517 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
518 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
519 DEVMETHOD(bus_release_resource, at91_release_resource),
520 DEVMETHOD(bus_print_child, at91_print_child),
525 static driver_t at91_driver = {
528 sizeof(struct at91_softc),
531 static devclass_t at91_devclass;
533 DRIVER_MODULE(atmelarm, nexus, at91_driver, at91_devclass, 0, 0);