at91sam9x5.c revision 238331
1237742Simp/*- 2237742Simp * Copyright (c) 2005 Olivier Houchard. All rights reserved. 3237742Simp * Copyright (c) 2010 Greg Ansley. All rights reserved. 4237742Simp * Copyright (c) 2012 M. Warner Losh.. All rights reserved. 5237742Simp * 6237742Simp * Redistribution and use in source and binary forms, with or without 7237742Simp * modification, are permitted provided that the following conditions 8237742Simp * are met: 9237742Simp * 1. Redistributions of source code must retain the above copyright 10237742Simp * notice, this list of conditions and the following disclaimer. 11237742Simp * 2. Redistributions in binary form must reproduce the above copyright 12237742Simp * notice, this list of conditions and the following disclaimer in the 13237742Simp * documentation and/or other materials provided with the distribution. 14237742Simp * 15237742Simp * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16237742Simp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17237742Simp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18237742Simp * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 19237742Simp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20237742Simp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21237742Simp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22237742Simp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23237742Simp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24237742Simp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25237742Simp * SUCH DAMAGE. 26237742Simp */ 27237742Simp 28237742Simp#include <sys/cdefs.h> 29237742Simp__FBSDID("$FreeBSD: head/sys/arm/at91/at91sam9x25.c 238331 2012-07-10 02:39:03Z imp $"); 30237742Simp 31237742Simp#include <sys/param.h> 32237742Simp#include <sys/systm.h> 33237742Simp#include <sys/bus.h> 34237742Simp#include <sys/kernel.h> 35237742Simp#include <sys/malloc.h> 36237742Simp#include <sys/module.h> 37237742Simp 38237742Simp#include <machine/bus.h> 39237742Simp 40237742Simp#include <arm/at91/at91var.h> 41238331Simp#include <arm/at91/at91reg.h> 42237742Simp#include <arm/at91/at91_aicreg.h> 43237742Simp#include <arm/at91/at91sam9x25reg.h> 44237742Simp#include <arm/at91/at91_pmcreg.h> 45237742Simp#include <arm/at91/at91_pmcvar.h> 46237742Simp 47237742Simpstruct at91sam9x25_softc { 48237742Simp device_t dev; 49237742Simp bus_space_tag_t sc_st; 50237742Simp bus_space_handle_t sc_sh; 51237742Simp bus_space_handle_t sc_sys_sh; 52237742Simp bus_space_handle_t sc_aic_sh; 53237742Simp bus_space_handle_t sc_dbg_sh; 54237742Simp bus_space_handle_t sc_matrix_sh; 55237742Simp}; 56237742Simp 57237742Simp/* 58237742Simp * Standard priority levels for the system. 0 is lowest and 7 is highest. 59237742Simp * These values are the ones Atmel uses for its Linux port 60237742Simp */ 61237742Simpstatic const int at91_irq_prio[32] = 62237742Simp{ 63237743Simp 7, /* Advanced Interrupt Controller (FIQ) */ 64237742Simp 7, /* System Peripherals */ 65237743Simp 1, /* Parallel IO Controller A and B */ 66237743Simp 1, /* Parallel IO Controller C and D */ 67237743Simp 4, /* Soft Modem */ 68237742Simp 5, /* USART 0 */ 69237742Simp 5, /* USART 1 */ 70237742Simp 5, /* USART 2 */ 71237743Simp 5, /* USART 3 */ 72237743Simp 6, /* Two-Wire Interface 0 */ 73237743Simp 6, /* Two-Wire Interface 1 */ 74237743Simp 6, /* Two-Wire Interface 2 */ 75237743Simp 0, /* Multimedia Card Interface 0 */ 76237742Simp 5, /* Serial Peripheral Interface 0 */ 77237742Simp 5, /* Serial Peripheral Interface 1 */ 78237743Simp 5, /* UART 0 */ 79237743Simp 5, /* UART 1 */ 80237743Simp 0, /* Timer Counter 0, 1, 2, 3, 4 and 5 */ 81237743Simp 0, /* Pulse Width Modulation Controller */ 82237743Simp 0, /* ADC Controller */ 83237743Simp 0, /* DMA Controller 0 */ 84237743Simp 0, /* DMA Controller 1 */ 85237743Simp 2, /* USB Host High Speed port */ 86237743Simp 2, /* USB Device High speed port */ 87237743Simp 3, /* Ethernet MAC 0 */ 88237743Simp 3, /* LDC Controller or Image Sensor Interface */ 89237743Simp 0, /* Multimedia Card Interface 1 */ 90237743Simp 3, /* Ethernet MAC 1 */ 91237743Simp 4, /* Synchronous Serial Interface */ 92237743Simp 4, /* CAN Controller 0 */ 93237743Simp 4, /* CAN Controller 1 */ 94237743Simp 0, /* Advanced Interrupt Controller (IRQ0) */ 95237742Simp}; 96237742Simp 97237742Simp#define DEVICE(_name, _id, _unit) \ 98237742Simp { \ 99237742Simp _name, _unit, \ 100237742Simp AT91SAM9X25_ ## _id ##_BASE, \ 101237742Simp AT91SAM9X25_ ## _id ## _SIZE, \ 102237742Simp AT91SAM9X25_IRQ_ ## _id \ 103237742Simp } 104237742Simp 105237742Simpstatic const struct cpu_devs at91_devs[] = 106237742Simp{ 107237742Simp DEVICE("at91_pmc", PMC, 0), 108237742Simp DEVICE("at91_wdt", WDT, 0), 109237742Simp DEVICE("at91_rst", RSTC, 0), 110237742Simp DEVICE("at91_pit", PIT, 0), 111237742Simp DEVICE("at91_pio", PIOA, 0), 112237742Simp DEVICE("at91_pio", PIOB, 1), 113237742Simp DEVICE("at91_pio", PIOC, 2), 114237744Simp DEVICE("at91_pio", PIOD, 3), 115237742Simp DEVICE("at91_twi", TWI0, 0), 116237742Simp DEVICE("at91_twi", TWI1, 1), 117237742Simp DEVICE("at91_twi", TWI2, 2), 118237742Simp DEVICE("at91_mci", HSMCI0, 0), 119237742Simp DEVICE("at91_mci", HSMCI1, 1), 120237742Simp DEVICE("uart", DBGU, 0), 121237742Simp DEVICE("uart", USART0, 1), 122237742Simp DEVICE("uart", USART1, 2), 123237742Simp DEVICE("uart", USART2, 3), 124237742Simp DEVICE("uart", USART3, 4), 125237742Simp DEVICE("spi", SPI0, 0), 126237742Simp DEVICE("spi", SPI1, 1), 127237742Simp DEVICE("macb", EMAC0, 0), 128237742Simp DEVICE("macb", EMAC1, 0), 129237742Simp DEVICE("nand", NAND, 0), 130237742Simp DEVICE("ohci", OHCI, 0), 131237742Simp DEVICE("ehci", EHCI, 0), 132237742Simp { 0, 0, 0, 0, 0 } 133237742Simp}; 134237742Simp 135237742Simpstatic void 136237742Simpat91_add_child(device_t dev, int prio, const char *name, int unit, 137237742Simp bus_addr_t addr, bus_size_t size, int irq0, int irq1, int irq2) 138237742Simp{ 139237742Simp device_t kid; 140237742Simp struct at91_ivar *ivar; 141237742Simp 142237742Simp kid = device_add_child_ordered(dev, prio, name, unit); 143237742Simp if (kid == NULL) { 144237742Simp printf("Can't add child %s%d ordered\n", name, unit); 145237742Simp return; 146237742Simp } 147237742Simp ivar = malloc(sizeof(*ivar), M_DEVBUF, M_NOWAIT | M_ZERO); 148237742Simp if (ivar == NULL) { 149237742Simp device_delete_child(dev, kid); 150237742Simp printf("Can't add alloc ivar\n"); 151237742Simp return; 152237742Simp } 153237742Simp device_set_ivars(kid, ivar); 154237742Simp resource_list_init(&ivar->resources); 155237742Simp if (irq0 != -1) { 156237742Simp bus_set_resource(kid, SYS_RES_IRQ, 0, irq0, 1); 157238331Simp if (irq0 != AT91_IRQ_SYSTEM) 158237742Simp at91_pmc_clock_add(device_get_nameunit(kid), irq0, 0); 159237742Simp } 160237742Simp if (irq1 != 0) 161237742Simp bus_set_resource(kid, SYS_RES_IRQ, 1, irq1, 1); 162237742Simp if (irq2 != 0) 163237742Simp bus_set_resource(kid, SYS_RES_IRQ, 2, irq2, 1); 164238330Simp if (addr != 0 && addr < AT91_BASE) 165238330Simp addr += AT91_BASE; 166237742Simp if (addr != 0) 167237742Simp bus_set_resource(kid, SYS_RES_MEMORY, 0, addr, size); 168237742Simp} 169237742Simp 170237742Simpstatic void 171237742Simpat91_cpu_add_builtin_children(device_t dev) 172237742Simp{ 173237742Simp int i; 174237742Simp const struct cpu_devs *walker; 175237742Simp 176237742Simp for (i = 1, walker = at91_devs; walker->name; i++, walker++) { 177237742Simp at91_add_child(dev, i, walker->name, walker->unit, 178237742Simp walker->mem_base, walker->mem_len, walker->irq0, 179237742Simp walker->irq1, walker->irq2); 180237742Simp } 181237742Simp} 182237742Simp 183237742Simpstatic uint32_t 184237742Simpat91_pll_outa(int freq) 185237742Simp{ 186237742Simp 187237742Simp switch (freq / 10000000) { 188237742Simp case 747 ... 801: return ((1 << 29) | (0 << 14)); 189237742Simp case 697 ... 746: return ((1 << 29) | (1 << 14)); 190237742Simp case 647 ... 696: return ((1 << 29) | (2 << 14)); 191237742Simp case 597 ... 646: return ((1 << 29) | (3 << 14)); 192237742Simp case 547 ... 596: return ((1 << 29) | (1 << 14)); 193237742Simp case 497 ... 546: return ((1 << 29) | (2 << 14)); 194237742Simp case 447 ... 496: return ((1 << 29) | (3 << 14)); 195237742Simp case 397 ... 446: return ((1 << 29) | (4 << 14)); 196237742Simp default: return (1 << 29); 197237742Simp } 198237742Simp} 199237742Simp 200237742Simpstatic uint32_t 201237742Simpat91_pll_outb(int freq) 202237742Simp{ 203237742Simp 204237742Simp return (0); 205237742Simp} 206237742Simp 207237742Simpstatic void 208237742Simpat91_identify(driver_t *drv, device_t parent) 209237742Simp{ 210237742Simp 211237742Simp if (soc_data.type == AT91_T_SAM9X5 && soc_data.subtype == AT91_ST_SAM9X25) { 212237742Simp at91_add_child(parent, 0, "at91sam9x25", 0, 0, 0, -1, 0, 0); 213237742Simp at91_cpu_add_builtin_children(parent); 214237742Simp } 215237742Simp} 216237742Simp 217237742Simpstatic int 218237742Simpat91_probe(device_t dev) 219237742Simp{ 220237742Simp 221237742Simp device_set_desc(dev, "AT91SAM9X25"); 222237742Simp return (0); 223237742Simp} 224237742Simp 225237742Simpstatic int 226237742Simpat91_attach(device_t dev) 227237742Simp{ 228237742Simp struct at91_pmc_clock *clk; 229237742Simp struct at91sam9x25_softc *sc = device_get_softc(dev); 230237742Simp int i; 231237742Simp 232237742Simp struct at91_softc *at91sc = device_get_softc(device_get_parent(dev)); 233237742Simp 234237742Simp sc->sc_st = at91sc->sc_st; 235237742Simp sc->sc_sh = at91sc->sc_sh; 236237742Simp sc->dev = dev; 237237742Simp 238237742Simp /* 239237742Simp * XXX These values work for the RM9200, SAM926[01], and SAM9X25 240237742Simp * will have to fix this when we want to support anything else. XXX 241237742Simp */ 242237742Simp if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91SAM9X25_SYS_BASE, 243237742Simp AT91SAM9X25_SYS_SIZE, &sc->sc_sys_sh) != 0) 244237742Simp panic("Enable to map system registers"); 245237742Simp 246237742Simp if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91SAM9X25_DBGU_BASE, 247237742Simp AT91SAM9X25_DBGU_SIZE, &sc->sc_dbg_sh) != 0) 248237742Simp panic("Enable to map DBGU registers"); 249237742Simp 250237742Simp if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91SAM9X25_AIC_BASE, 251237742Simp AT91SAM9X25_AIC_SIZE, &sc->sc_aic_sh) != 0) 252237742Simp panic("Enable to map system registers"); 253237742Simp 254237742Simp /* XXX Hack to tell atmelarm about the AIC */ 255237742Simp at91sc->sc_aic_sh = sc->sc_aic_sh; 256238331Simp at91sc->sc_irq_system = AT91_IRQ_SYSTEM; 257237742Simp 258237742Simp for (i = 0; i < 32; i++) { 259237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SVR + 260237742Simp i * 4, i); 261237742Simp /* Priority. */ 262237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SMR + i * 4, 263237742Simp at91_irq_prio[i]); 264237742Simp if (i < 8) 265237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_EOICR, 266237742Simp 1); 267237742Simp } 268237742Simp 269237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SPU, 32); 270237742Simp /* No debug. */ 271237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_DCR, 0); 272237742Simp /* Disable and clear all interrupts. */ 273237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_IDCR, 0xffffffff); 274237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_ICCR, 0xffffffff); 275237742Simp 276237742Simp /* Disable all interrupts for DBGU */ 277237742Simp bus_space_write_4(sc->sc_st, sc->sc_dbg_sh, 0x0c, 0xffffffff); 278237742Simp 279237742Simp if (bus_space_subregion(sc->sc_st, sc->sc_sh, 280237742Simp AT91SAM9X25_MATRIX_BASE, AT91SAM9X25_MATRIX_SIZE, 281237742Simp &sc->sc_matrix_sh) != 0) 282237742Simp panic("Enable to map matrix registers"); 283237742Simp 284237742Simp#if 0 /* wrong, placeholder */ 285237742Simp /* activate NAND*/ 286237742Simp i = bus_space_read_4(sc->sc_st, sc->sc_matrix_sh, 287237742Simp AT91SAM9X25_EBICSA); 288237742Simp bus_space_write_4(sc->sc_st, sc->sc_matrix_sh, 289237742Simp AT91SAM9X25_EBICSA, 290237742Simp i | AT91_MATRIX_EBI_CS3A_SMC_SMARTMEDIA); 291237742Simp#endif 292237742Simp 293237742Simp /* Update USB device port clock info */ 294237742Simp clk = at91_pmc_clock_ref("udpck"); 295237742Simp clk->pmc_mask = PMC_SCER_UDP_SAM9; 296237742Simp at91_pmc_clock_deref(clk); 297237742Simp 298237742Simp /* Update USB host port clock info */ 299237742Simp clk = at91_pmc_clock_ref("uhpck"); 300237742Simp clk->pmc_mask = PMC_SCER_UHP_SAM9; 301237742Simp at91_pmc_clock_deref(clk); 302237742Simp 303237742Simp /* Each SOC has different PLL contraints */ 304237742Simp clk = at91_pmc_clock_ref("plla"); 305237742Simp clk->pll_min_in = SAM9X25_PLL_A_MIN_IN_FREQ; /* 2 MHz */ 306237742Simp clk->pll_max_in = SAM9X25_PLL_A_MAX_IN_FREQ; /* 32 MHz */ 307237742Simp clk->pll_min_out = SAM9X25_PLL_A_MIN_OUT_FREQ; /* 400 MHz */ 308237742Simp clk->pll_max_out = SAM9X25_PLL_A_MAX_OUT_FREQ; /* 800 MHz */ 309237742Simp clk->pll_mul_shift = SAM9X25_PLL_A_MUL_SHIFT; 310237742Simp clk->pll_mul_mask = SAM9X25_PLL_A_MUL_MASK; 311237742Simp clk->pll_div_shift = SAM9X25_PLL_A_DIV_SHIFT; 312237742Simp clk->pll_div_mask = SAM9X25_PLL_A_DIV_MASK; 313237742Simp clk->set_outb = at91_pll_outa; 314237742Simp at91_pmc_clock_deref(clk); 315237742Simp 316237742Simp clk = at91_pmc_clock_ref("pllb"); 317237742Simp clk->pll_min_in = SAM9X25_PLL_B_MIN_IN_FREQ; /* 2 MHz */ 318237742Simp clk->pll_max_in = SAM9X25_PLL_B_MAX_IN_FREQ; /* 32 MHz */ 319237742Simp clk->pll_min_out = SAM9X25_PLL_B_MIN_OUT_FREQ; /* 30 MHz */ 320237742Simp clk->pll_max_out = SAM9X25_PLL_B_MAX_OUT_FREQ; /* 100 MHz */ 321237742Simp clk->pll_mul_shift = SAM9X25_PLL_B_MUL_SHIFT; 322237742Simp clk->pll_mul_mask = SAM9X25_PLL_B_MUL_MASK; 323237742Simp clk->pll_div_shift = SAM9X25_PLL_B_DIV_SHIFT; 324237742Simp clk->pll_div_mask = SAM9X25_PLL_B_DIV_MASK; 325237742Simp clk->set_outb = at91_pll_outb; 326237742Simp at91_pmc_clock_deref(clk); 327237742Simp return (0); 328237742Simp} 329237742Simp 330237742Simpstatic device_method_t at91sam9x25_methods[] = { 331237742Simp DEVMETHOD(device_probe, at91_probe), 332237742Simp DEVMETHOD(device_attach, at91_attach), 333237742Simp DEVMETHOD(device_identify, at91_identify), 334237742Simp {0, 0}, 335237742Simp}; 336237742Simp 337237742Simpstatic driver_t at91sam9x25_driver = { 338237742Simp "at91sam9x25", 339237742Simp at91sam9x25_methods, 340237742Simp sizeof(struct at91sam9x25_softc), 341237742Simp}; 342237742Simp 343237742Simpstatic devclass_t at91sam9x25_devclass; 344237742Simp 345237742SimpDRIVER_MODULE(at91sam9x25, atmelarm, at91sam9x25_driver, at91sam9x25_devclass, 0, 0); 346