2 * Copyright (c) 2005 Olivier Houchard. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
29 #include <sys/param.h>
30 #include <sys/systm.h>
32 #include <sys/kernel.h>
33 #include <sys/malloc.h>
34 #include <sys/module.h>
37 #include <vm/vm_kern.h>
39 #include <vm/vm_page.h>
40 #include <vm/vm_extern.h>
42 #define _ARM32_BUS_DMA_PRIVATE
43 #include <machine/bus.h>
44 #include <machine/intr.h>
46 #include <arm/at91/at91rm92reg.h>
47 #include <arm/at91/at91var.h>
49 static struct at91_softc *at91_softc;
51 static void at91_eoi(void *);
53 uint32_t at91_master_clock = AT91C_MASTER_CLOCK;
56 at91_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
57 bus_space_handle_t *bshp)
62 if (pa >= 0xfff00000) {
63 *bshp = pa - 0xf0000000 + 0xd0000000;
68 endpa = round_page(bpa + size);
70 *bshp = (vm_offset_t)pmap_mapdev(pa, endpa - pa);
76 at91_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size)
78 vm_offset_t va, endva;
80 va = trunc_page((vm_offset_t)t);
81 endva = va + round_page(size);
83 /* Free the kernel virtual mapping. */
84 kmem_free(kernel_map, va, endva - va);
88 at91_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
89 bus_size_t size, bus_space_handle_t *nbshp)
92 *nbshp = bsh + offset;
97 at91_barrier(void *t, bus_space_handle_t bsh, bus_size_t size, bus_size_t b,
103 bs_protos(generic_armv4);
105 struct bus_space at91_bs_tag = {
109 /* mapping/unmapping */
114 /* allocation/deallocation */
123 generic_armv4_bs_r_2,
129 generic_armv4_bs_rm_2,
135 generic_armv4_bs_rr_2,
141 generic_armv4_bs_w_2,
147 generic_armv4_bs_wm_2,
153 generic_armv4_bs_wr_2,
165 generic_armv4_bs_sr_2,
171 generic_armv4_bs_c_2,
175 /* read (single) stream */
177 generic_armv4_bs_r_2,
181 /* read multiple stream */
183 generic_armv4_bs_rm_2,
187 /* read region stream */
189 generic_armv4_bs_rr_2,
193 /* write (single) stream */
195 generic_armv4_bs_w_2,
199 /* write multiple stream */
201 generic_armv4_bs_wm_2,
205 /* write region stream */
207 generic_armv4_bs_wr_2,
213 at91_probe(device_t dev)
215 device_set_desc(dev, "AT91 device bus");
216 arm_post_filter = at91_eoi;
221 at91_identify(driver_t *drv, device_t parent)
224 BUS_ADD_CHILD(parent, 0, "atmelarm", 0);
227 struct arm32_dma_range *
228 bus_dma_get_range(void)
235 bus_dma_get_range_nb(void)
240 extern void irq_entry(void);
243 at91_add_child(device_t dev, int prio, const char *name, int unit,
244 bus_addr_t addr, bus_size_t size, int irq0, int irq1, int irq2)
247 struct at91_ivar *ivar;
249 kid = device_add_child_ordered(dev, prio, name, unit);
251 printf("Can't add child %s%d ordered\n", name, unit);
254 ivar = malloc(sizeof(*ivar), M_DEVBUF, M_NOWAIT | M_ZERO);
256 device_delete_child(dev, kid);
257 printf("Can't add alloc ivar\n");
260 device_set_ivars(kid, ivar);
261 resource_list_init(&ivar->resources);
263 bus_set_resource(kid, SYS_RES_IRQ, 0, irq0, 1);
265 bus_set_resource(kid, SYS_RES_IRQ, 1, irq1, 1);
267 bus_set_resource(kid, SYS_RES_IRQ, 2, irq2, 1);
269 bus_set_resource(kid, SYS_RES_MEMORY, 0, addr, size);
283 struct cpu_devs at91rm9200_devs[] =
285 // All the "system" devices
288 AT91RM92_BASE + AT91RM92_ST_BASE, AT91RM92_ST_SIZE,
293 AT91RM92_BASE + AT91RM92_PIOA_BASE, AT91RM92_PIO_SIZE,
298 AT91RM92_BASE + AT91RM92_PIOB_BASE, AT91RM92_PIO_SIZE,
303 AT91RM92_BASE + AT91RM92_PIOC_BASE, AT91RM92_PIO_SIZE,
308 AT91RM92_BASE + AT91RM92_PIOD_BASE, AT91RM92_PIO_SIZE,
313 AT91RM92_BASE + AT91RM92_PMC_BASE, AT91RM92_PMC_SIZE,
318 AT91RM92_BASE + AT91RM92_AIC_BASE, AT91RM92_AIC_SIZE,
319 0 // Interrupt controller has no interrupts!
323 AT91RM92_BASE + AT91RM92_RTC_BASE, AT91RM92_RTC_SIZE,
328 AT91RM92_BASE + AT91RM92_MC_BASE, AT91RM92_MC_SIZE,
335 AT91RM92_BASE + AT91RM92_TC0_BASE, AT91RM92_TC_SIZE,
336 AT91RM92_IRQ_TC0, AT91RM92_IRQ_TC1, AT91RM92_IRQ_TC2
340 AT91RM92_BASE + AT91RM92_TC1_BASE, AT91RM92_TC_SIZE,
341 AT91RM92_IRQ_TC3, AT91RM92_IRQ_TC4, AT91RM92_IRQ_TC5
345 AT91RM92_BASE + AT91RM92_UDP_BASE, AT91RM92_UDP_SIZE,
346 AT91RM92_IRQ_UDP, AT91RM92_IRQ_PIOB
350 AT91RM92_BASE + AT91RM92_MCI_BASE, AT91RM92_MCI_SIZE,
355 AT91RM92_BASE + AT91RM92_TWI_BASE, AT91RM92_TWI_SIZE,
360 AT91RM92_BASE + AT91RM92_EMAC_BASE, AT91RM92_EMAC_SIZE,
363 #ifndef SKYEYE_WORKAROUNDS
366 AT91RM92_BASE + AT91RM92_DBGU_BASE, AT91RM92_DBGU_SIZE,
371 AT91RM92_BASE + AT91RM92_USART0_BASE, AT91RM92_USART_SIZE,
376 AT91RM92_BASE + AT91RM92_USART1_BASE, AT91RM92_USART_SIZE,
381 AT91RM92_BASE + AT91RM92_USART2_BASE, AT91RM92_USART_SIZE,
386 AT91RM92_BASE + AT91RM92_USART3_BASE, AT91RM92_USART_SIZE,
392 AT91RM92_BASE + AT91RM92_USART0_BASE, AT91RM92_USART_SIZE,
398 AT91RM92_BASE + AT91RM92_SSC0_BASE, AT91RM92_SSC_SIZE,
403 AT91RM92_BASE + AT91RM92_SSC1_BASE, AT91RM92_SSC_SIZE,
408 AT91RM92_BASE + AT91RM92_SSC2_BASE, AT91RM92_SSC_SIZE,
413 AT91RM92_BASE + AT91RM92_SPI_BASE, AT91RM92_SPI_SIZE,
418 AT91RM92_OHCI_BASE, AT91RM92_OHCI_SIZE,
423 AT91RM92_CF_BASE, AT91RM92_CF_SIZE,
430 at91_cpu_add_builtin_children(device_t dev, struct at91_softc *sc)
433 struct cpu_devs *walker;
435 // XXX should look at the device id in the DBGU register and
436 // XXX based on the CPU load in these devices
437 for (i = 0, walker = at91rm9200_devs; walker->name; i++, walker++) {
438 at91_add_child(dev, i, walker->name, walker->unit,
439 walker->mem_base, walker->mem_len, walker->irq0,
440 walker->irq1, walker->irq2);
447 * Standard priority levels for the system. 0 is lowest and 7 is highest.
448 * These values are the ones Atmel uses for its Linux port, which differ
449 * a little form the ones that are in the standard distribution. Also,
450 * the ones marked with 'TWEEK' are different based on experience.
452 static int irq_prio[32] =
454 7, /* Advanced Interrupt Controller (FIQ) */
455 7, /* System Peripherals */
456 1, /* Parallel IO Controller A */
457 1, /* Parallel IO Controller B */
458 1, /* Parallel IO Controller C */
459 1, /* Parallel IO Controller D */
464 0, /* Multimedia Card Interface */
465 2, /* USB Device Port */
466 4, /* Two-Wire Interface */ /* TWEEK */
467 5, /* Serial Peripheral Interface */
468 4, /* Serial Synchronous Controller 0 */
469 6, /* Serial Synchronous Controller 1 */ /* TWEEK */
470 4, /* Serial Synchronous Controller 2 */
471 0, /* Timer Counter 0 */
472 6, /* Timer Counter 1 */ /* TWEEK */
473 0, /* Timer Counter 2 */
474 0, /* Timer Counter 3 */
475 0, /* Timer Counter 4 */
476 0, /* Timer Counter 5 */
477 2, /* USB Host port */
478 3, /* Ethernet MAC */
479 0, /* Advanced Interrupt Controller (IRQ0) */
480 0, /* Advanced Interrupt Controller (IRQ1) */
481 0, /* Advanced Interrupt Controller (IRQ2) */
482 0, /* Advanced Interrupt Controller (IRQ3) */
483 0, /* Advanced Interrupt Controller (IRQ4) */
484 0, /* Advanced Interrupt Controller (IRQ5) */
485 0 /* Advanced Interrupt Controller (IRQ6) */
489 at91_attach(device_t dev)
491 struct at91_softc *sc = device_get_softc(dev);
495 sc->sc_st = &at91_bs_tag;
496 sc->sc_sh = AT91RM92_BASE;
498 if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91RM92_SYS_BASE,
499 AT91RM92_SYS_SIZE, &sc->sc_sys_sh) != 0)
500 panic("Enable to map IRQ registers");
501 sc->sc_irq_rman.rm_type = RMAN_ARRAY;
502 sc->sc_irq_rman.rm_descr = "AT91 IRQs";
503 sc->sc_mem_rman.rm_type = RMAN_ARRAY;
504 sc->sc_mem_rman.rm_descr = "AT91 Memory";
505 if (rman_init(&sc->sc_irq_rman) != 0 ||
506 rman_manage_region(&sc->sc_irq_rman, 1, 31) != 0)
507 panic("at91_attach: failed to set up IRQ rman");
508 if (rman_init(&sc->sc_mem_rman) != 0 ||
509 rman_manage_region(&sc->sc_mem_rman, 0xdff00000ul,
511 panic("at91_attach: failed to set up memory rman");
512 if (rman_manage_region(&sc->sc_mem_rman, AT91RM92_OHCI_BASE,
513 AT91RM92_OHCI_BASE + AT91RM92_OHCI_SIZE - 1) != 0)
514 panic("at91_attach: failed to set up ohci memory");
515 if (rman_manage_region(&sc->sc_mem_rman, AT91RM92_CF_BASE,
516 AT91RM92_CF_BASE + AT91RM92_CF_SIZE - 1) != 0)
517 panic("at91_attach: failed to set up CompactFlash ATA memory");
519 for (i = 0; i < 32; i++) {
520 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_SVR +
523 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_SMR + i * 4,
526 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_EOICR,
529 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_SPU, 32);
531 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_DCR, 0);
532 /* Disable and clear all interrupts. */
533 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_IDCR, 0xffffffff);
534 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_ICCR, 0xffffffff);
537 /* Disable all interrupts for RTC (0xe24 == RTC_IDR) */
538 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, 0xe24, 0xffffffff);
539 /* DIsable all interrupts for DBGU */
540 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, 0x20c, 0xffffffff);
541 /* Disable all interrupts for the SDRAM controller */
542 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, 0xfa8, 0xffffffff);
544 at91_cpu_add_builtin_children(dev, sc);
546 bus_generic_probe(dev);
547 bus_generic_attach(dev);
548 enable_interrupts(I32_bit | F32_bit);
552 static struct resource *
553 at91_alloc_resource(device_t dev, device_t child, int type, int *rid,
554 u_long start, u_long end, u_long count, u_int flags)
556 struct at91_softc *sc = device_get_softc(dev);
557 struct resource_list_entry *rle;
558 struct at91_ivar *ivar = device_get_ivars(child);
559 struct resource_list *rl = &ivar->resources;
561 if (device_get_parent(child) != dev)
562 return (BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
563 type, rid, start, end, count, flags));
565 rle = resource_list_find(rl, type, *rid);
569 panic("Resource rid %d type %d already in use", *rid, type);
570 if (start == 0UL && end == ~0UL) {
572 count = ulmax(count, rle->count);
573 end = ulmax(rle->end, start + count - 1);
578 rle->res = rman_reserve_resource(&sc->sc_irq_rman,
579 start, end, count, flags, child);
582 rle->res = rman_reserve_resource(&sc->sc_mem_rman,
583 start, end, count, flags, child);
584 if (rle->res != NULL) {
585 rman_set_bustag(rle->res, &at91_bs_tag);
586 rman_set_bushandle(rle->res, start);
591 rle->start = rman_get_start(rle->res);
592 rle->end = rman_get_end(rle->res);
594 rman_set_rid(rle->res, *rid);
599 static struct resource_list *
600 at91_get_resource_list(device_t dev, device_t child)
602 struct at91_ivar *ivar;
604 ivar = device_get_ivars(child);
605 return (&(ivar->resources));
609 at91_release_resource(device_t dev, device_t child, int type,
610 int rid, struct resource *r)
612 struct resource_list *rl;
613 struct resource_list_entry *rle;
615 rl = at91_get_resource_list(dev, child);
618 rle = resource_list_find(rl, type, rid);
621 rman_release_resource(r);
627 at91_setup_intr(device_t dev, device_t child,
628 struct resource *ires, int flags, driver_filter_t *filt,
629 driver_intr_t *intr, void *arg, void **cookiep)
631 struct at91_softc *sc = device_get_softc(dev);
633 if (rman_get_start(ires) == AT91RM92_IRQ_SYSTEM && filt == NULL)
634 panic("All system interrupt ISRs must be FILTER");
635 BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, filt,
637 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_IECR,
638 1 << rman_get_start(ires));
643 at91_teardown_intr(device_t dev, device_t child, struct resource *res,
646 struct at91_softc *sc = device_get_softc(dev);
648 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_IDCR,
649 1 << rman_get_start(res));
650 return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, res, cookie));
654 at91_activate_resource(device_t bus, device_t child, int type, int rid,
661 if (type == SYS_RES_MEMORY) {
662 error = bus_space_map(rman_get_bustag(r),
663 rman_get_bushandle(r), rman_get_size(r), 0, &p);
666 rman_set_bushandle(r, p);
669 return (rman_activate_resource(r));
673 at91_print_child(device_t dev, device_t child)
675 struct at91_ivar *ivars;
676 struct resource_list *rl;
679 ivars = device_get_ivars(child);
680 rl = &ivars->resources;
682 retval += bus_print_child_header(dev, child);
684 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
685 retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
686 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
687 if (device_get_flags(dev))
688 retval += printf(" flags %#x", device_get_flags(dev));
690 retval += bus_print_child_footer(dev, child);
696 arm_mask_irq(uintptr_t nb)
699 bus_space_write_4(at91_softc->sc_st,
700 at91_softc->sc_sys_sh, IC_IDCR, 1 << nb);
705 arm_get_next_irq(int last __unused)
710 irq = bus_space_read_4(at91_softc->sc_st,
711 at91_softc->sc_sys_sh, IC_IVR);
712 status = bus_space_read_4(at91_softc->sc_st,
713 at91_softc->sc_sys_sh, IC_ISR);
715 bus_space_write_4(at91_softc->sc_st,
716 at91_softc->sc_sys_sh, IC_EOICR, 1);
723 arm_unmask_irq(uintptr_t nb)
726 bus_space_write_4(at91_softc->sc_st,
727 at91_softc->sc_sys_sh, IC_IECR, 1 << nb);
728 bus_space_write_4(at91_softc->sc_st, at91_softc->sc_sys_sh,
734 at91_eoi(void *unused)
736 bus_space_write_4(at91_softc->sc_st, at91_softc->sc_sys_sh,
740 static device_method_t at91_methods[] = {
741 DEVMETHOD(device_probe, at91_probe),
742 DEVMETHOD(device_attach, at91_attach),
743 DEVMETHOD(device_identify, at91_identify),
745 DEVMETHOD(bus_alloc_resource, at91_alloc_resource),
746 DEVMETHOD(bus_setup_intr, at91_setup_intr),
747 DEVMETHOD(bus_teardown_intr, at91_teardown_intr),
748 DEVMETHOD(bus_activate_resource, at91_activate_resource),
749 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
750 DEVMETHOD(bus_get_resource_list,at91_get_resource_list),
751 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
752 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
753 DEVMETHOD(bus_release_resource, at91_release_resource),
754 DEVMETHOD(bus_print_child, at91_print_child),
759 static driver_t at91_driver = {
762 sizeof(struct at91_softc),
764 static devclass_t at91_devclass;
766 DRIVER_MODULE(atmelarm, nexus, at91_driver, at91_devclass, 0, 0);