at91.c revision 262925
1155324Simp/*- 2155324Simp * Copyright (c) 2005 Olivier Houchard. All rights reserved. 3213496Scognet * Copyright (c) 2010 Greg Ansley. All rights reserved. 4155324Simp * 5155324Simp * Redistribution and use in source and binary forms, with or without 6155324Simp * modification, are permitted provided that the following conditions 7155324Simp * are met: 8155324Simp * 1. Redistributions of source code must retain the above copyright 9155324Simp * notice, this list of conditions and the following disclaimer. 10155324Simp * 2. Redistributions in binary form must reproduce the above copyright 11155324Simp * notice, this list of conditions and the following disclaimer in the 12155324Simp * documentation and/or other materials provided with the distribution. 13155324Simp * 14185265Simp * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15185265Simp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16185265Simp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17185265Simp * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 18185265Simp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19185265Simp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20185265Simp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21185265Simp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22185265Simp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23185265Simp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24185265Simp * SUCH DAMAGE. 25155324Simp */ 26155324Simp 27262925Simp#include "opt_platform.h" 28262925Simp 29155324Simp#include <sys/cdefs.h> 30155324Simp__FBSDID("$FreeBSD: head/sys/arm/at91/at91.c 262925 2014-03-08 06:06:50Z imp $"); 31155324Simp 32155324Simp#include <sys/param.h> 33155324Simp#include <sys/systm.h> 34155324Simp#include <sys/bus.h> 35155324Simp#include <sys/kernel.h> 36155324Simp#include <sys/malloc.h> 37155324Simp#include <sys/module.h> 38155324Simp 39155324Simp#include <vm/vm.h> 40155324Simp#include <vm/vm_kern.h> 41155324Simp#include <vm/pmap.h> 42155324Simp#include <vm/vm_page.h> 43155324Simp#include <vm/vm_extern.h> 44155324Simp 45155324Simp#define _ARM32_BUS_DMA_PRIVATE 46155324Simp#include <machine/bus.h> 47257660Sian#include <machine/devmap.h> 48155324Simp#include <machine/intr.h> 49155324Simp 50155324Simp#include <arm/at91/at91var.h> 51213496Scognet#include <arm/at91/at91_pmcvar.h> 52213496Scognet#include <arm/at91/at91_aicreg.h> 53155324Simp 54213496Scognetuint32_t at91_master_clock; 55187599Simp 56155324Simpstatic int 57155324Simpat91_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 58155324Simp bus_space_handle_t *bshp) 59155324Simp{ 60155324Simp vm_paddr_t pa, endpa; 61155324Simp 62155324Simp pa = trunc_page(bpa); 63235718Simp if (pa >= AT91_PA_BASE + 0xff00000) { 64261171Simp *bshp = bpa - AT91_PA_BASE + AT91_BASE; 65155324Simp return (0); 66161704Scognet } 67261171Simp if (pa >= AT91_BASE + 0xff00000) { 68261171Simp *bshp = bpa; 69161704Scognet return (0); 70261171Simp } 71155324Simp endpa = round_page(bpa + size); 72155324Simp 73261304Simp *bshp = (vm_offset_t)pmap_mapdev(pa, endpa - pa) + (bpa - pa); 74236989Simp 75155324Simp return (0); 76155324Simp} 77155324Simp 78155324Simpstatic void 79164425Ssamat91_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size) 80155324Simp{ 81155324Simp vm_offset_t va, endva; 82155324Simp 83262924Simp if (t == 0) 84262924Simp return; 85155324Simp va = trunc_page((vm_offset_t)t); 86262924Simp if (va >= AT91_BASE && va <= AT91_BASE + 0xff00000) 87262924Simp return; 88262924Simp endva = round_page((vm_offset_t)t + size); 89155324Simp 90155324Simp /* Free the kernel virtual mapping. */ 91254025Sjeff kva_free(va, endva - va); 92155324Simp} 93155324Simp 94155324Simpstatic int 95155324Simpat91_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 96155324Simp bus_size_t size, bus_space_handle_t *nbshp) 97155324Simp{ 98155324Simp 99155324Simp *nbshp = bsh + offset; 100155324Simp return (0); 101155324Simp} 102155324Simp 103156828Simpstatic void 104236989Simpat91_barrier(void *t, bus_space_handle_t bsh, bus_size_t size, bus_size_t b, 105156828Simp int a) 106156828Simp{ 107156828Simp} 108156828Simp 109213496Scognetstruct arm32_dma_range * 110213496Scognetbus_dma_get_range(void) 111213496Scognet{ 112213496Scognet 113213496Scognet return (NULL); 114213496Scognet} 115213496Scognet 116213496Scognetint 117213496Scognetbus_dma_get_range_nb(void) 118213496Scognet{ 119213496Scognet return (0); 120213496Scognet} 121213496Scognet 122155324Simpbs_protos(generic); 123155324Simpbs_protos(generic_armv4); 124155324Simp 125155324Simpstruct bus_space at91_bs_tag = { 126155324Simp /* cookie */ 127155324Simp (void *) 0, 128155324Simp 129155324Simp /* mapping/unmapping */ 130155324Simp at91_bs_map, 131155324Simp at91_bs_unmap, 132155324Simp at91_bs_subregion, 133155324Simp 134155324Simp /* allocation/deallocation */ 135155324Simp NULL, 136155324Simp NULL, 137155324Simp 138155324Simp /* barrier */ 139156828Simp at91_barrier, 140155324Simp 141155324Simp /* read (single) */ 142155324Simp generic_bs_r_1, 143155324Simp generic_armv4_bs_r_2, 144155324Simp generic_bs_r_4, 145155324Simp NULL, 146155324Simp 147155324Simp /* read multiple */ 148155324Simp generic_bs_rm_1, 149155324Simp generic_armv4_bs_rm_2, 150155324Simp generic_bs_rm_4, 151155324Simp NULL, 152155324Simp 153155324Simp /* read region */ 154158746Scognet generic_bs_rr_1, 155155324Simp generic_armv4_bs_rr_2, 156155324Simp generic_bs_rr_4, 157155324Simp NULL, 158155324Simp 159155324Simp /* write (single) */ 160155324Simp generic_bs_w_1, 161155324Simp generic_armv4_bs_w_2, 162155324Simp generic_bs_w_4, 163155324Simp NULL, 164155324Simp 165155324Simp /* write multiple */ 166155324Simp generic_bs_wm_1, 167155324Simp generic_armv4_bs_wm_2, 168155324Simp generic_bs_wm_4, 169155324Simp NULL, 170155324Simp 171155324Simp /* write region */ 172155324Simp NULL, 173155324Simp generic_armv4_bs_wr_2, 174155324Simp generic_bs_wr_4, 175155324Simp NULL, 176155324Simp 177155324Simp /* set multiple */ 178155324Simp NULL, 179155324Simp NULL, 180155324Simp NULL, 181155324Simp NULL, 182155324Simp 183155324Simp /* set region */ 184155324Simp NULL, 185155324Simp generic_armv4_bs_sr_2, 186155324Simp generic_bs_sr_4, 187155324Simp NULL, 188155324Simp 189155324Simp /* copy */ 190155324Simp NULL, 191155324Simp generic_armv4_bs_c_2, 192155324Simp NULL, 193155324Simp NULL, 194184310Sstas 195184310Sstas /* read (single) stream */ 196184310Sstas generic_bs_r_1, 197184310Sstas generic_armv4_bs_r_2, 198184310Sstas generic_bs_r_4, 199184310Sstas NULL, 200184310Sstas 201184310Sstas /* read multiple stream */ 202184310Sstas generic_bs_rm_1, 203184310Sstas generic_armv4_bs_rm_2, 204184310Sstas generic_bs_rm_4, 205184310Sstas NULL, 206184310Sstas 207184310Sstas /* read region stream */ 208184310Sstas generic_bs_rr_1, 209184310Sstas generic_armv4_bs_rr_2, 210184310Sstas generic_bs_rr_4, 211184310Sstas NULL, 212184310Sstas 213184310Sstas /* write (single) stream */ 214184310Sstas generic_bs_w_1, 215184310Sstas generic_armv4_bs_w_2, 216184310Sstas generic_bs_w_4, 217184310Sstas NULL, 218184310Sstas 219184310Sstas /* write multiple stream */ 220184310Sstas generic_bs_wm_1, 221184310Sstas generic_armv4_bs_wm_2, 222184310Sstas generic_bs_wm_4, 223184310Sstas NULL, 224184310Sstas 225184310Sstas /* write region stream */ 226184310Sstas NULL, 227184310Sstas generic_armv4_bs_wr_2, 228184310Sstas generic_bs_wr_4, 229184310Sstas NULL, 230155324Simp}; 231155324Simp 232262925Simp#ifndef FDT 233262925Simp 234262925Simpstatic struct at91_softc *at91_softc; 235262925Simp 236262925Simpstatic void at91_eoi(void *); 237262925Simp 238155324Simpstatic int 239155324Simpat91_probe(device_t dev) 240155324Simp{ 241213496Scognet 242260093Simp device_set_desc(dev, soc_info.name); 243257370Snwhitehorn return (BUS_PROBE_NOWILDCARD); 244155324Simp} 245155324Simp 246155324Simpstatic void 247155324Simpat91_identify(driver_t *drv, device_t parent) 248155324Simp{ 249155324Simp 250155324Simp BUS_ADD_CHILD(parent, 0, "atmelarm", 0); 251155324Simp} 252155324Simp 253238390Simpstatic void 254238390Simpat91_cpu_add_builtin_children(device_t dev, const struct cpu_devs *walker) 255238390Simp{ 256238390Simp int i; 257238390Simp 258238390Simp for (i = 1; walker->name; i++, walker++) { 259238390Simp at91_add_child(dev, i, walker->name, walker->unit, 260238390Simp walker->mem_base, walker->mem_len, walker->irq0, 261238390Simp walker->irq1, walker->irq2); 262238390Simp } 263238390Simp} 264238390Simp 265155324Simpstatic int 266155324Simpat91_attach(device_t dev) 267155324Simp{ 268155324Simp struct at91_softc *sc = device_get_softc(dev); 269155324Simp 270257343Snwhitehorn arm_post_filter = at91_eoi; 271257343Snwhitehorn 272155324Simp at91_softc = sc; 273155324Simp sc->sc_st = &at91_bs_tag; 274213496Scognet sc->sc_sh = AT91_BASE; 275238389Simp sc->sc_aic_sh = AT91_BASE + AT91_SYS_BASE; 276155324Simp sc->dev = dev; 277213496Scognet 278155324Simp sc->sc_irq_rman.rm_type = RMAN_ARRAY; 279164432Simp sc->sc_irq_rman.rm_descr = "AT91 IRQs"; 280155324Simp if (rman_init(&sc->sc_irq_rman) != 0 || 281155324Simp rman_manage_region(&sc->sc_irq_rman, 1, 31) != 0) 282155324Simp panic("at91_attach: failed to set up IRQ rman"); 283213496Scognet 284213496Scognet sc->sc_mem_rman.rm_type = RMAN_ARRAY; 285213496Scognet sc->sc_mem_rman.rm_descr = "AT91 Memory"; 286213496Scognet if (rman_init(&sc->sc_mem_rman) != 0) 287155324Simp panic("at91_attach: failed to set up memory rman"); 288261322Simp /* 289261322Simp * Manage the physical space, defined as being everything that isn't 290261322Simp * DRAM. 291261322Simp */ 292261322Simp if (rman_manage_region(&sc->sc_mem_rman, 0, PHYSADDR - 1) != 0) 293261322Simp panic("at91_attach: failed to set up memory rman"); 294261322Simp if (rman_manage_region(&sc->sc_mem_rman, PHYSADDR + (256 << 20), 295261322Simp 0xfffffffful) != 0) 296261322Simp panic("at91_attach: failed to set up memory rman"); 297155324Simp 298238390Simp /* 299238390Simp * Add this device's children... 300238390Simp */ 301238390Simp at91_cpu_add_builtin_children(dev, soc_info.soc_data->soc_children); 302238398Simp soc_info.soc_data->soc_clock_init(); 303156828Simp 304155324Simp bus_generic_probe(dev); 305155324Simp bus_generic_attach(dev); 306155324Simp enable_interrupts(I32_bit | F32_bit); 307155324Simp return (0); 308155324Simp} 309155324Simp 310155324Simpstatic struct resource * 311155324Simpat91_alloc_resource(device_t dev, device_t child, int type, int *rid, 312155324Simp u_long start, u_long end, u_long count, u_int flags) 313155324Simp{ 314155324Simp struct at91_softc *sc = device_get_softc(dev); 315155324Simp struct resource_list_entry *rle; 316155324Simp struct at91_ivar *ivar = device_get_ivars(child); 317155324Simp struct resource_list *rl = &ivar->resources; 318261322Simp bus_space_handle_t bsh; 319155324Simp 320155324Simp if (device_get_parent(child) != dev) 321155324Simp return (BUS_ALLOC_RESOURCE(device_get_parent(dev), child, 322155324Simp type, rid, start, end, count, flags)); 323155324Simp 324155324Simp rle = resource_list_find(rl, type, *rid); 325155324Simp if (rle == NULL) 326155324Simp return (NULL); 327155324Simp if (rle->res) 328155324Simp panic("Resource rid %d type %d already in use", *rid, type); 329155324Simp if (start == 0UL && end == ~0UL) { 330155324Simp start = rle->start; 331155324Simp count = ulmax(count, rle->count); 332155324Simp end = ulmax(rle->end, start + count - 1); 333155324Simp } 334155324Simp switch (type) 335155324Simp { 336155324Simp case SYS_RES_IRQ: 337155324Simp rle->res = rman_reserve_resource(&sc->sc_irq_rman, 338155324Simp start, end, count, flags, child); 339155324Simp break; 340155324Simp case SYS_RES_MEMORY: 341182805Simp rle->res = rman_reserve_resource(&sc->sc_mem_rman, 342182805Simp start, end, count, flags, child); 343184309Sstas if (rle->res != NULL) { 344261322Simp bus_space_map(&at91_bs_tag, start, 345261322Simp rman_get_size(rle->res), 0, &bsh); 346184309Sstas rman_set_bustag(rle->res, &at91_bs_tag); 347261322Simp rman_set_bushandle(rle->res, bsh); 348184309Sstas } 349155324Simp break; 350155324Simp } 351155324Simp if (rle->res) { 352155324Simp rle->start = rman_get_start(rle->res); 353155324Simp rle->end = rman_get_end(rle->res); 354155324Simp rle->count = count; 355157891Simp rman_set_rid(rle->res, *rid); 356155324Simp } 357155324Simp return (rle->res); 358155324Simp} 359155324Simp 360155324Simpstatic struct resource_list * 361155324Simpat91_get_resource_list(device_t dev, device_t child) 362155324Simp{ 363155324Simp struct at91_ivar *ivar; 364155324Simp 365155324Simp ivar = device_get_ivars(child); 366155324Simp return (&(ivar->resources)); 367155324Simp} 368155324Simp 369155324Simpstatic int 370155324Simpat91_release_resource(device_t dev, device_t child, int type, 371155324Simp int rid, struct resource *r) 372155324Simp{ 373155324Simp struct resource_list *rl; 374155324Simp struct resource_list_entry *rle; 375155324Simp 376155324Simp rl = at91_get_resource_list(dev, child); 377155324Simp if (rl == NULL) 378155324Simp return (EINVAL); 379155324Simp rle = resource_list_find(rl, type, rid); 380155324Simp if (rle == NULL) 381155324Simp return (EINVAL); 382155324Simp rman_release_resource(r); 383155324Simp rle->res = NULL; 384155324Simp return (0); 385155324Simp} 386155324Simp 387155324Simpstatic int 388155324Simpat91_setup_intr(device_t dev, device_t child, 389236989Simp struct resource *ires, int flags, driver_filter_t *filt, 390236989Simp driver_intr_t *intr, void *arg, void **cookiep) 391155324Simp{ 392226832Skevlo int error; 393161704Scognet 394238348Simp if (rman_get_start(ires) == AT91_IRQ_SYSTEM && filt == NULL) 395167261Spiso panic("All system interrupt ISRs must be FILTER"); 396226832Skevlo error = BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, 397226832Skevlo filt, intr, arg, cookiep); 398226832Skevlo if (error) 399226832Skevlo return (error); 400226832Skevlo 401155324Simp return (0); 402155324Simp} 403155324Simp 404155324Simpstatic int 405155324Simpat91_teardown_intr(device_t dev, device_t child, struct resource *res, 406155324Simp void *cookie) 407155324Simp{ 408155324Simp struct at91_softc *sc = device_get_softc(dev); 409155324Simp 410236989Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_IDCR, 411155324Simp 1 << rman_get_start(res)); 412155324Simp return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, res, cookie)); 413155324Simp} 414155324Simp 415155324Simpstatic int 416155324Simpat91_activate_resource(device_t bus, device_t child, int type, int rid, 417155324Simp struct resource *r) 418155324Simp{ 419155324Simp#if 0 420155324Simp u_long p; 421155324Simp int error; 422155324Simp 423155324Simp if (type == SYS_RES_MEMORY) { 424155324Simp error = bus_space_map(rman_get_bustag(r), 425155324Simp rman_get_bushandle(r), rman_get_size(r), 0, &p); 426236989Simp if (error) 427155324Simp return (error); 428155324Simp rman_set_bushandle(r, p); 429155324Simp } 430155324Simp#endif 431155324Simp return (rman_activate_resource(r)); 432155324Simp} 433155324Simp 434155324Simpstatic int 435155324Simpat91_print_child(device_t dev, device_t child) 436155324Simp{ 437155324Simp struct at91_ivar *ivars; 438155324Simp struct resource_list *rl; 439155324Simp int retval = 0; 440155324Simp 441155324Simp ivars = device_get_ivars(child); 442155324Simp rl = &ivars->resources; 443155324Simp 444155324Simp retval += bus_print_child_header(dev, child); 445155324Simp 446155324Simp retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx"); 447155324Simp retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx"); 448155324Simp retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); 449155324Simp if (device_get_flags(dev)) 450155324Simp retval += printf(" flags %#x", device_get_flags(dev)); 451155324Simp 452155324Simp retval += bus_print_child_footer(dev, child); 453155324Simp 454155324Simp return (retval); 455155324Simp} 456155324Simp 457178366Scognetstatic void 458178366Scognetat91_eoi(void *unused) 459178366Scognet{ 460213496Scognet bus_space_write_4(at91_softc->sc_st, at91_softc->sc_aic_sh, 461178366Scognet IC_EOICR, 0); 462178366Scognet} 463178366Scognet 464238334Simpvoid 465238334Simpat91_add_child(device_t dev, int prio, const char *name, int unit, 466238334Simp bus_addr_t addr, bus_size_t size, int irq0, int irq1, int irq2) 467238334Simp{ 468238334Simp device_t kid; 469238334Simp struct at91_ivar *ivar; 470238334Simp 471238334Simp kid = device_add_child_ordered(dev, prio, name, unit); 472238334Simp if (kid == NULL) { 473238334Simp printf("Can't add child %s%d ordered\n", name, unit); 474238334Simp return; 475238334Simp } 476238334Simp ivar = malloc(sizeof(*ivar), M_DEVBUF, M_NOWAIT | M_ZERO); 477238334Simp if (ivar == NULL) { 478238334Simp device_delete_child(dev, kid); 479238334Simp printf("Can't add alloc ivar\n"); 480238334Simp return; 481238334Simp } 482238334Simp device_set_ivars(kid, ivar); 483238334Simp resource_list_init(&ivar->resources); 484238334Simp if (irq0 != -1) { 485238334Simp bus_set_resource(kid, SYS_RES_IRQ, 0, irq0, 1); 486238334Simp if (irq0 != AT91_IRQ_SYSTEM) 487238334Simp at91_pmc_clock_add(device_get_nameunit(kid), irq0, 0); 488238334Simp } 489238334Simp if (irq1 != 0) 490238334Simp bus_set_resource(kid, SYS_RES_IRQ, 1, irq1, 1); 491238334Simp if (irq2 != 0) 492238334Simp bus_set_resource(kid, SYS_RES_IRQ, 2, irq2, 1); 493261322Simp /* 494261322Simp * Special case for on-board devices. These have their address 495261322Simp * defined relative to AT91_PA_BASE in all the register files we 496261322Simp * have. We could change this, but that's a lot of effort which 497261322Simp * will be obsoleted when FDT arrives. 498261322Simp */ 499261322Simp if (addr != 0 && addr < 0x10000000 && addr >= 0x0f000000) 500261322Simp addr += AT91_PA_BASE; 501238334Simp if (addr != 0) 502238334Simp bus_set_resource(kid, SYS_RES_MEMORY, 0, addr, size); 503238334Simp} 504238334Simp 505155324Simpstatic device_method_t at91_methods[] = { 506155324Simp DEVMETHOD(device_probe, at91_probe), 507155324Simp DEVMETHOD(device_attach, at91_attach), 508155324Simp DEVMETHOD(device_identify, at91_identify), 509155324Simp 510155324Simp DEVMETHOD(bus_alloc_resource, at91_alloc_resource), 511155324Simp DEVMETHOD(bus_setup_intr, at91_setup_intr), 512155324Simp DEVMETHOD(bus_teardown_intr, at91_teardown_intr), 513155324Simp DEVMETHOD(bus_activate_resource, at91_activate_resource), 514155324Simp DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 515155324Simp DEVMETHOD(bus_get_resource_list,at91_get_resource_list), 516155324Simp DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource), 517155324Simp DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 518155324Simp DEVMETHOD(bus_release_resource, at91_release_resource), 519155324Simp DEVMETHOD(bus_print_child, at91_print_child), 520155324Simp 521155324Simp {0, 0}, 522155324Simp}; 523155324Simp 524155324Simpstatic driver_t at91_driver = { 525155324Simp "atmelarm", 526155324Simp at91_methods, 527155324Simp sizeof(struct at91_softc), 528155324Simp}; 529213496Scognet 530155324Simpstatic devclass_t at91_devclass; 531155324Simp 532155324SimpDRIVER_MODULE(atmelarm, nexus, at91_driver, at91_devclass, 0, 0); 533262925Simp#endif 534