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 THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 #include <sys/cdefs.h>
26 __FBSDID("$FreeBSD$");
28 #include <sys/param.h>
29 #include <sys/systm.h>
31 #include <sys/kernel.h>
32 #include <sys/malloc.h>
33 #include <sys/module.h>
36 #include <vm/vm_kern.h>
38 #include <vm/vm_page.h>
39 #include <vm/vm_extern.h>
41 #define _ARM32_BUS_DMA_PRIVATE
42 #include <machine/bus.h>
43 #include <machine/intr.h>
45 #include <arm/at91/at91rm92reg.h>
46 #include <arm/at91/at91var.h>
48 static struct at91_softc *at91_softc;
51 at91_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
52 bus_space_handle_t *bshp)
57 if (pa >= 0xfff00000) {
58 *bshp = pa - 0xf0000000 + 0xd0000000;
63 endpa = round_page(bpa + size);
65 *bshp = (vm_offset_t)pmap_mapdev(pa, endpa - pa);
71 at91_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size)
73 vm_offset_t va, endva;
75 va = trunc_page((vm_offset_t)t);
76 endva = va + round_page(size);
78 /* Free the kernel virtual mapping. */
79 kmem_free(kernel_map, va, endva - va);
83 at91_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
84 bus_size_t size, bus_space_handle_t *nbshp)
87 *nbshp = bsh + offset;
92 at91_barrier(void *t, bus_space_handle_t bsh, bus_size_t size, bus_size_t b,
98 bs_protos(generic_armv4);
100 struct bus_space at91_bs_tag = {
104 /* mapping/unmapping */
109 /* allocation/deallocation */
118 generic_armv4_bs_r_2,
124 generic_armv4_bs_rm_2,
130 generic_armv4_bs_rr_2,
136 generic_armv4_bs_w_2,
142 generic_armv4_bs_wm_2,
148 generic_armv4_bs_wr_2,
160 generic_armv4_bs_sr_2,
166 generic_armv4_bs_c_2,
170 /* read (single) stream */
172 generic_armv4_bs_r_2,
176 /* read multiple stream */
178 generic_armv4_bs_rm_2,
182 /* read region stream */
184 generic_armv4_bs_rr_2,
188 /* write (single) stream */
190 generic_armv4_bs_w_2,
194 /* write multiple stream */
196 generic_armv4_bs_wm_2,
200 /* write region stream */
202 generic_armv4_bs_wr_2,
208 at91_probe(device_t dev)
210 device_set_desc(dev, "AT91 device bus");
215 at91_identify(driver_t *drv, device_t parent)
218 BUS_ADD_CHILD(parent, 0, "atmelarm", 0);
221 struct arm32_dma_range *
222 bus_dma_get_range(void)
229 bus_dma_get_range_nb(void)
234 extern void irq_entry(void);
237 at91_add_child(device_t dev, int prio, const char *name, int unit,
238 bus_addr_t addr, bus_size_t size, int irq0, int irq1, int irq2)
241 struct at91_ivar *ivar;
243 kid = device_add_child_ordered(dev, prio, name, unit);
245 printf("Can't add child %s%d ordered\n", name, unit);
248 ivar = malloc(sizeof(*ivar), M_DEVBUF, M_NOWAIT | M_ZERO);
250 device_delete_child(dev, kid);
251 printf("Can't add alloc ivar\n");
254 device_set_ivars(kid, ivar);
255 resource_list_init(&ivar->resources);
257 bus_set_resource(kid, SYS_RES_IRQ, 0, irq0, 1);
259 bus_set_resource(kid, SYS_RES_IRQ, 1, irq1, 1);
261 bus_set_resource(kid, SYS_RES_IRQ, 2, irq2, 1);
263 bus_set_resource(kid, SYS_RES_MEMORY, 0, addr, size);
277 struct cpu_devs at91rm9200_devs[] =
279 // All the "system" devices
282 AT91RM92_BASE + AT91RM92_ST_BASE, AT91RM92_ST_SIZE,
287 AT91RM92_BASE + AT91RM92_PIOA_BASE, AT91RM92_PIO_SIZE,
292 AT91RM92_BASE + AT91RM92_PIOB_BASE, AT91RM92_PIO_SIZE,
297 AT91RM92_BASE + AT91RM92_PIOC_BASE, AT91RM92_PIO_SIZE,
302 AT91RM92_BASE + AT91RM92_PIOD_BASE, AT91RM92_PIO_SIZE,
307 AT91RM92_BASE + AT91RM92_PMC_BASE, AT91RM92_PMC_SIZE,
312 AT91RM92_BASE + AT91RM92_AIC_BASE, AT91RM92_AIC_SIZE,
313 0 // Interrupt controller has no interrupts!
317 AT91RM92_BASE + AT91RM92_RTC_BASE, AT91RM92_RTC_SIZE,
322 AT91RM92_BASE + AT91RM92_MC_BASE, AT91RM92_MC_SIZE,
329 AT91RM92_BASE + AT91RM92_TC0_BASE, AT91RM92_TC_SIZE,
330 AT91RM92_IRQ_TC0, AT91RM92_IRQ_TC1, AT91RM92_IRQ_TC2
334 AT91RM92_BASE + AT91RM92_TC1_BASE, AT91RM92_TC_SIZE,
335 AT91RM92_IRQ_TC3, AT91RM92_IRQ_TC4, AT91RM92_IRQ_TC5
339 AT91RM92_BASE + AT91RM92_UDP_BASE, AT91RM92_UDP_SIZE,
344 AT91RM92_BASE + AT91RM92_MCI_BASE, AT91RM92_MCI_SIZE,
349 AT91RM92_BASE + AT91RM92_TWI_BASE, AT91RM92_TWI_SIZE,
354 AT91RM92_BASE + AT91RM92_EMAC_BASE, AT91RM92_EMAC_SIZE,
357 #ifndef SKYEYE_WORKAROUNDS
360 AT91RM92_BASE + AT91RM92_DBGU_BASE, AT91RM92_DBGU_SIZE,
365 AT91RM92_BASE + AT91RM92_USART0_BASE, AT91RM92_USART_SIZE,
370 AT91RM92_BASE + AT91RM92_USART1_BASE, AT91RM92_USART_SIZE,
375 AT91RM92_BASE + AT91RM92_USART2_BASE, AT91RM92_USART_SIZE,
380 AT91RM92_BASE + AT91RM92_USART3_BASE, AT91RM92_USART_SIZE,
386 AT91RM92_BASE + AT91RM92_USART0_BASE, AT91RM92_USART_SIZE,
392 AT91RM92_BASE + AT91RM92_SSC0_BASE, AT91RM92_SSC_SIZE,
397 AT91RM92_BASE + AT91RM92_SSC1_BASE, AT91RM92_SSC_SIZE,
402 AT91RM92_BASE + AT91RM92_SSC2_BASE, AT91RM92_SSC_SIZE,
407 AT91RM92_BASE + AT91RM92_SPI_BASE, AT91RM92_SPI_SIZE,
412 AT91RM92_OHCI_BASE, AT91RM92_OHCI_SIZE,
419 at91_cpu_add_builtin_children(device_t dev, struct at91_softc *sc)
422 struct cpu_devs *walker;
424 // XXX should look at the device id in the DBGU register and
425 // XXX based on the CPU load in these devices
426 for (i = 0, walker = at91rm9200_devs; walker->name; i++, walker++) {
427 at91_add_child(dev, i, walker->name, walker->unit,
428 walker->mem_base, walker->mem_len, walker->irq0,
429 walker->irq1, walker->irq2);
436 * Standard priority levels for the system. 0 is lowest and 7 is highest.
437 * These values are the ones Atmel uses for its Linux port, which differ
438 * a little form the ones that are in the standard distribution. Also,
439 * the ones marked with 'TWEEK' are different based on experience.
441 static int irq_prio[32] =
443 7, /* Advanced Interrupt Controller (FIQ) */
444 7, /* System Peripherals */
445 1, /* Parallel IO Controller A */
446 1, /* Parallel IO Controller B */
447 1, /* Parallel IO Controller C */
448 1, /* Parallel IO Controller D */
453 0, /* Multimedia Card Interface */
454 2, /* USB Device Port */
455 4, /* Two-Wire Interface */ /* TWEEK */
456 5, /* Serial Peripheral Interface */
457 4, /* Serial Synchronous Controller 0 */
458 6, /* Serial Synchronous Controller 1 */ /* TWEEK */
459 4, /* Serial Synchronous Controller 2 */
460 0, /* Timer Counter 0 */
461 6, /* Timer Counter 1 */ /* TWEEK */
462 0, /* Timer Counter 2 */
463 0, /* Timer Counter 3 */
464 0, /* Timer Counter 4 */
465 0, /* Timer Counter 5 */
466 2, /* USB Host port */
467 3, /* Ethernet MAC */
468 0, /* Advanced Interrupt Controller (IRQ0) */
469 0, /* Advanced Interrupt Controller (IRQ1) */
470 0, /* Advanced Interrupt Controller (IRQ2) */
471 0, /* Advanced Interrupt Controller (IRQ3) */
472 0, /* Advanced Interrupt Controller (IRQ4) */
473 0, /* Advanced Interrupt Controller (IRQ5) */
474 0 /* Advanced Interrupt Controller (IRQ6) */
478 at91_attach(device_t dev)
480 struct at91_softc *sc = device_get_softc(dev);
484 sc->sc_st = &at91_bs_tag;
485 sc->sc_sh = AT91RM92_BASE;
487 if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91RM92_SYS_BASE,
488 AT91RM92_SYS_SIZE, &sc->sc_sys_sh) != 0)
489 panic("Enable to map IRQ registers");
490 sc->sc_irq_rman.rm_type = RMAN_ARRAY;
491 sc->sc_irq_rman.rm_descr = "AT91 IRQs";
492 sc->sc_mem_rman.rm_type = RMAN_ARRAY;
493 sc->sc_mem_rman.rm_descr = "AT91 Memory";
495 sc->sc_usbmem_rman.rm_type = RMAN_ARRAY;
496 sc->sc_usbmem_rman.rm_descr = "AT91RM9200 USB Memory-mapped regs";
498 if (rman_init(&sc->sc_irq_rman) != 0 ||
499 rman_manage_region(&sc->sc_irq_rman, 1, 31) != 0)
500 panic("at91_attach: failed to set up IRQ rman");
501 if (rman_init(&sc->sc_mem_rman) != 0 ||
502 rman_manage_region(&sc->sc_mem_rman, 0xdff00000ul,
504 panic("at91_attach: failed to set up memory rman");
505 if (rman_manage_region(&sc->sc_mem_rman, AT91RM92_OHCI_BASE,
506 AT91RM92_OHCI_BASE + AT91RM92_OHCI_SIZE - 1) != 0)
507 panic("at91_attach: failed to set up ohci memory");
509 for (i = 0; i < 32; i++) {
510 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_SVR +
513 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_SMR + i * 4,
516 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_EOICR,
519 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_SPU, 32);
521 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_DCR, 0);
522 /* Disable and clear all interrupts. */
523 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_IDCR, 0xffffffff);
524 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_ICCR, 0xffffffff);
527 /* Disable all interrupts for RTC (0xe24 == RTC_IDR) */
528 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, 0xe24, 0xffffffff);
529 /* DIsable all interrupts for DBGU */
530 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, 0x20c, 0xffffffff);
531 /* Disable all interrupts for the SDRAM controller */
532 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, 0xfa8, 0xffffffff);
534 at91_cpu_add_builtin_children(dev, sc);
536 bus_generic_probe(dev);
537 bus_generic_attach(dev);
538 enable_interrupts(I32_bit | F32_bit);
542 static struct resource *
543 at91_alloc_resource(device_t dev, device_t child, int type, int *rid,
544 u_long start, u_long end, u_long count, u_int flags)
546 struct at91_softc *sc = device_get_softc(dev);
547 struct resource_list_entry *rle;
548 struct at91_ivar *ivar = device_get_ivars(child);
549 struct resource_list *rl = &ivar->resources;
551 if (device_get_parent(child) != dev)
552 return (BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
553 type, rid, start, end, count, flags));
555 rle = resource_list_find(rl, type, *rid);
559 panic("Resource rid %d type %d already in use", *rid, type);
560 if (start == 0UL && end == ~0UL) {
562 count = ulmax(count, rle->count);
563 end = ulmax(rle->end, start + count - 1);
568 rle->res = rman_reserve_resource(&sc->sc_irq_rman,
569 start, end, count, flags, child);
573 if (start >= 0x00300000 && start <= 0x003fffff)
574 rle->res = rman_reserve_resource(&sc->sc_usbmem_rman,
575 start, end, count, flags, child);
578 rle->res = rman_reserve_resource(&sc->sc_mem_rman,
579 start, end, count, flags, child);
580 if (rle->res != NULL) {
581 rman_set_bustag(rle->res, &at91_bs_tag);
582 rman_set_bushandle(rle->res, start);
587 rle->start = rman_get_start(rle->res);
588 rle->end = rman_get_end(rle->res);
590 rman_set_rid(rle->res, *rid);
595 static struct resource_list *
596 at91_get_resource_list(device_t dev, device_t child)
598 struct at91_ivar *ivar;
600 ivar = device_get_ivars(child);
601 return (&(ivar->resources));
605 at91_release_resource(device_t dev, device_t child, int type,
606 int rid, struct resource *r)
608 struct resource_list *rl;
609 struct resource_list_entry *rle;
611 rl = at91_get_resource_list(dev, child);
614 rle = resource_list_find(rl, type, rid);
617 rman_release_resource(r);
623 at91_setup_intr(device_t dev, device_t child,
624 struct resource *ires, int flags, driver_filter_t *filt,
625 driver_intr_t *intr, void *arg, void **cookiep)
627 struct at91_softc *sc = device_get_softc(dev);
629 if (rman_get_start(ires) == AT91RM92_IRQ_SYSTEM && filt == NULL)
630 panic("All system interrupt ISRs must be FILTER");
631 BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, filt,
633 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_IECR,
634 1 << rman_get_start(ires));
639 at91_teardown_intr(device_t dev, device_t child, struct resource *res,
642 struct at91_softc *sc = device_get_softc(dev);
644 bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_IDCR,
645 1 << rman_get_start(res));
646 return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, res, cookie));
650 at91_activate_resource(device_t bus, device_t child, int type, int rid,
657 if (type == SYS_RES_MEMORY) {
658 error = bus_space_map(rman_get_bustag(r),
659 rman_get_bushandle(r), rman_get_size(r), 0, &p);
662 rman_set_bushandle(r, p);
665 return (rman_activate_resource(r));
669 at91_print_child(device_t dev, device_t child)
671 struct at91_ivar *ivars;
672 struct resource_list *rl;
675 ivars = device_get_ivars(child);
676 rl = &ivars->resources;
678 retval += bus_print_child_header(dev, child);
680 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
681 retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
682 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
683 if (device_get_flags(dev))
684 retval += printf(" flags %#x", device_get_flags(dev));
686 retval += bus_print_child_footer(dev, child);
692 arm_mask_irq(uintptr_t nb)
695 bus_space_write_4(at91_softc->sc_st,
696 at91_softc->sc_sys_sh, IC_IDCR, 1 << nb);
707 irq = bus_space_read_4(at91_softc->sc_st,
708 at91_softc->sc_sys_sh, IC_IVR);
709 status = bus_space_read_4(at91_softc->sc_st,
710 at91_softc->sc_sys_sh, IC_ISR);
712 bus_space_write_4(at91_softc->sc_st,
713 at91_softc->sc_sys_sh, IC_EOICR, 1);
720 arm_unmask_irq(uintptr_t nb)
723 bus_space_write_4(at91_softc->sc_st,
724 at91_softc->sc_sys_sh, IC_IECR, 1 << nb);
725 bus_space_write_4(at91_softc->sc_st, at91_softc->sc_sys_sh,
730 static device_method_t at91_methods[] = {
731 DEVMETHOD(device_probe, at91_probe),
732 DEVMETHOD(device_attach, at91_attach),
733 DEVMETHOD(device_identify, at91_identify),
735 DEVMETHOD(bus_alloc_resource, at91_alloc_resource),
736 DEVMETHOD(bus_setup_intr, at91_setup_intr),
737 DEVMETHOD(bus_teardown_intr, at91_teardown_intr),
738 DEVMETHOD(bus_activate_resource, at91_activate_resource),
739 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
740 DEVMETHOD(bus_get_resource_list,at91_get_resource_list),
741 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
742 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
743 DEVMETHOD(bus_release_resource, at91_release_resource),
744 DEVMETHOD(bus_print_child, at91_print_child),
749 static driver_t at91_driver = {
752 sizeof(struct at91_softc),
754 static devclass_t at91_devclass;
756 DRIVER_MODULE(atmelarm, nexus, at91_driver, at91_devclass, 0, 0);