at91sam9x5.c revision 237744
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 237744 2012-06-29 06:05:44Z 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> 41237742Simp#include <arm/at91/at91_aicreg.h> 42237742Simp#include <arm/at91/at91sam9x25reg.h> 43237742Simp#include <arm/at91/at91_pmcreg.h> 44237742Simp#include <arm/at91/at91_pmcvar.h> 45237742Simp 46237742Simpstruct at91sam9x25_softc { 47237742Simp device_t dev; 48237742Simp bus_space_tag_t sc_st; 49237742Simp bus_space_handle_t sc_sh; 50237742Simp bus_space_handle_t sc_sys_sh; 51237742Simp bus_space_handle_t sc_aic_sh; 52237742Simp bus_space_handle_t sc_dbg_sh; 53237742Simp bus_space_handle_t sc_matrix_sh; 54237742Simp}; 55237742Simp 56237742Simp/* 57237742Simp * Standard priority levels for the system. 0 is lowest and 7 is highest. 58237742Simp * These values are the ones Atmel uses for its Linux port 59237742Simp */ 60237742Simpstatic const int at91_irq_prio[32] = 61237742Simp{ 62237743Simp 7, /* Advanced Interrupt Controller (FIQ) */ 63237742Simp 7, /* System Peripherals */ 64237743Simp 1, /* Parallel IO Controller A and B */ 65237743Simp 1, /* Parallel IO Controller C and D */ 66237743Simp 4, /* Soft Modem */ 67237742Simp 5, /* USART 0 */ 68237742Simp 5, /* USART 1 */ 69237742Simp 5, /* USART 2 */ 70237743Simp 5, /* USART 3 */ 71237743Simp 6, /* Two-Wire Interface 0 */ 72237743Simp 6, /* Two-Wire Interface 1 */ 73237743Simp 6, /* Two-Wire Interface 2 */ 74237743Simp 0, /* Multimedia Card Interface 0 */ 75237742Simp 5, /* Serial Peripheral Interface 0 */ 76237742Simp 5, /* Serial Peripheral Interface 1 */ 77237743Simp 5, /* UART 0 */ 78237743Simp 5, /* UART 1 */ 79237743Simp 0, /* Timer Counter 0, 1, 2, 3, 4 and 5 */ 80237743Simp 0, /* Pulse Width Modulation Controller */ 81237743Simp 0, /* ADC Controller */ 82237743Simp 0, /* DMA Controller 0 */ 83237743Simp 0, /* DMA Controller 1 */ 84237743Simp 2, /* USB Host High Speed port */ 85237743Simp 2, /* USB Device High speed port */ 86237743Simp 3, /* Ethernet MAC 0 */ 87237743Simp 3, /* LDC Controller or Image Sensor Interface */ 88237743Simp 0, /* Multimedia Card Interface 1 */ 89237743Simp 3, /* Ethernet MAC 1 */ 90237743Simp 4, /* Synchronous Serial Interface */ 91237743Simp 4, /* CAN Controller 0 */ 92237743Simp 4, /* CAN Controller 1 */ 93237743Simp 0, /* Advanced Interrupt Controller (IRQ0) */ 94237742Simp}; 95237742Simp 96237742Simp#define DEVICE(_name, _id, _unit) \ 97237742Simp { \ 98237742Simp _name, _unit, \ 99237742Simp AT91SAM9X25_ ## _id ##_BASE, \ 100237742Simp AT91SAM9X25_ ## _id ## _SIZE, \ 101237742Simp AT91SAM9X25_IRQ_ ## _id \ 102237742Simp } 103237742Simp 104237742Simpstatic const struct cpu_devs at91_devs[] = 105237742Simp{ 106237742Simp DEVICE("at91_pmc", PMC, 0), 107237742Simp DEVICE("at91_wdt", WDT, 0), 108237742Simp DEVICE("at91_rst", RSTC, 0), 109237742Simp DEVICE("at91_pit", PIT, 0), 110237742Simp DEVICE("at91_pio", PIOA, 0), 111237742Simp DEVICE("at91_pio", PIOB, 1), 112237742Simp DEVICE("at91_pio", PIOC, 2), 113237744Simp DEVICE("at91_pio", PIOD, 3), 114237742Simp DEVICE("at91_twi", TWI0, 0), 115237742Simp DEVICE("at91_twi", TWI1, 1), 116237742Simp DEVICE("at91_twi", TWI2, 2), 117237742Simp DEVICE("at91_mci", HSMCI0, 0), 118237742Simp DEVICE("at91_mci", HSMCI1, 1), 119237742Simp DEVICE("uart", DBGU, 0), 120237742Simp DEVICE("uart", USART0, 1), 121237742Simp DEVICE("uart", USART1, 2), 122237742Simp DEVICE("uart", USART2, 3), 123237742Simp DEVICE("uart", USART3, 4), 124237742Simp DEVICE("spi", SPI0, 0), 125237742Simp DEVICE("spi", SPI1, 1), 126237742Simp DEVICE("macb", EMAC0, 0), 127237742Simp DEVICE("macb", EMAC1, 0), 128237742Simp DEVICE("nand", NAND, 0), 129237742Simp DEVICE("ohci", OHCI, 0), 130237742Simp DEVICE("ehci", EHCI, 0), 131237742Simp { 0, 0, 0, 0, 0 } 132237742Simp}; 133237742Simp 134237742Simpstatic void 135237742Simpat91_add_child(device_t dev, int prio, const char *name, int unit, 136237742Simp bus_addr_t addr, bus_size_t size, int irq0, int irq1, int irq2) 137237742Simp{ 138237742Simp device_t kid; 139237742Simp struct at91_ivar *ivar; 140237742Simp 141237742Simp kid = device_add_child_ordered(dev, prio, name, unit); 142237742Simp if (kid == NULL) { 143237742Simp printf("Can't add child %s%d ordered\n", name, unit); 144237742Simp return; 145237742Simp } 146237742Simp ivar = malloc(sizeof(*ivar), M_DEVBUF, M_NOWAIT | M_ZERO); 147237742Simp if (ivar == NULL) { 148237742Simp device_delete_child(dev, kid); 149237742Simp printf("Can't add alloc ivar\n"); 150237742Simp return; 151237742Simp } 152237742Simp device_set_ivars(kid, ivar); 153237742Simp resource_list_init(&ivar->resources); 154237742Simp if (irq0 != -1) { 155237742Simp bus_set_resource(kid, SYS_RES_IRQ, 0, irq0, 1); 156237742Simp if (irq0 != AT91SAM9X25_IRQ_SYSTEM) 157237742Simp at91_pmc_clock_add(device_get_nameunit(kid), irq0, 0); 158237742Simp } 159237742Simp if (irq1 != 0) 160237742Simp bus_set_resource(kid, SYS_RES_IRQ, 1, irq1, 1); 161237742Simp if (irq2 != 0) 162237742Simp bus_set_resource(kid, SYS_RES_IRQ, 2, irq2, 1); 163237742Simp if (addr != 0 && addr < AT91SAM9X25_BASE) 164237742Simp addr += AT91SAM9X25_BASE; 165237742Simp if (addr != 0) 166237742Simp bus_set_resource(kid, SYS_RES_MEMORY, 0, addr, size); 167237742Simp} 168237742Simp 169237742Simpstatic void 170237742Simpat91_cpu_add_builtin_children(device_t dev) 171237742Simp{ 172237742Simp int i; 173237742Simp const struct cpu_devs *walker; 174237742Simp 175237742Simp for (i = 1, walker = at91_devs; walker->name; i++, walker++) { 176237742Simp at91_add_child(dev, i, walker->name, walker->unit, 177237742Simp walker->mem_base, walker->mem_len, walker->irq0, 178237742Simp walker->irq1, walker->irq2); 179237742Simp } 180237742Simp} 181237742Simp 182237742Simpstatic uint32_t 183237742Simpat91_pll_outa(int freq) 184237742Simp{ 185237742Simp 186237742Simp switch (freq / 10000000) { 187237742Simp case 747 ... 801: return ((1 << 29) | (0 << 14)); 188237742Simp case 697 ... 746: return ((1 << 29) | (1 << 14)); 189237742Simp case 647 ... 696: return ((1 << 29) | (2 << 14)); 190237742Simp case 597 ... 646: return ((1 << 29) | (3 << 14)); 191237742Simp case 547 ... 596: return ((1 << 29) | (1 << 14)); 192237742Simp case 497 ... 546: return ((1 << 29) | (2 << 14)); 193237742Simp case 447 ... 496: return ((1 << 29) | (3 << 14)); 194237742Simp case 397 ... 446: return ((1 << 29) | (4 << 14)); 195237742Simp default: return (1 << 29); 196237742Simp } 197237742Simp} 198237742Simp 199237742Simpstatic uint32_t 200237742Simpat91_pll_outb(int freq) 201237742Simp{ 202237742Simp 203237742Simp return (0); 204237742Simp} 205237742Simp 206237742Simpstatic void 207237742Simpat91_identify(driver_t *drv, device_t parent) 208237742Simp{ 209237742Simp 210237742Simp if (soc_data.type == AT91_T_SAM9X5 && soc_data.subtype == AT91_ST_SAM9X25) { 211237742Simp at91_add_child(parent, 0, "at91sam9x25", 0, 0, 0, -1, 0, 0); 212237742Simp at91_cpu_add_builtin_children(parent); 213237742Simp } 214237742Simp} 215237742Simp 216237742Simpstatic int 217237742Simpat91_probe(device_t dev) 218237742Simp{ 219237742Simp 220237742Simp device_set_desc(dev, "AT91SAM9X25"); 221237742Simp return (0); 222237742Simp} 223237742Simp 224237742Simpstatic int 225237742Simpat91_attach(device_t dev) 226237742Simp{ 227237742Simp struct at91_pmc_clock *clk; 228237742Simp struct at91sam9x25_softc *sc = device_get_softc(dev); 229237742Simp int i; 230237742Simp 231237742Simp struct at91_softc *at91sc = device_get_softc(device_get_parent(dev)); 232237742Simp 233237742Simp sc->sc_st = at91sc->sc_st; 234237742Simp sc->sc_sh = at91sc->sc_sh; 235237742Simp sc->dev = dev; 236237742Simp 237237742Simp /* 238237742Simp * XXX These values work for the RM9200, SAM926[01], and SAM9X25 239237742Simp * will have to fix this when we want to support anything else. XXX 240237742Simp */ 241237742Simp if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91SAM9X25_SYS_BASE, 242237742Simp AT91SAM9X25_SYS_SIZE, &sc->sc_sys_sh) != 0) 243237742Simp panic("Enable to map system registers"); 244237742Simp 245237742Simp if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91SAM9X25_DBGU_BASE, 246237742Simp AT91SAM9X25_DBGU_SIZE, &sc->sc_dbg_sh) != 0) 247237742Simp panic("Enable to map DBGU registers"); 248237742Simp 249237742Simp if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91SAM9X25_AIC_BASE, 250237742Simp AT91SAM9X25_AIC_SIZE, &sc->sc_aic_sh) != 0) 251237742Simp panic("Enable to map system registers"); 252237742Simp 253237742Simp /* XXX Hack to tell atmelarm about the AIC */ 254237742Simp at91sc->sc_aic_sh = sc->sc_aic_sh; 255237742Simp at91sc->sc_irq_system = AT91SAM9X25_IRQ_SYSTEM; 256237742Simp 257237742Simp for (i = 0; i < 32; i++) { 258237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SVR + 259237742Simp i * 4, i); 260237742Simp /* Priority. */ 261237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SMR + i * 4, 262237742Simp at91_irq_prio[i]); 263237742Simp if (i < 8) 264237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_EOICR, 265237742Simp 1); 266237742Simp } 267237742Simp 268237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SPU, 32); 269237742Simp /* No debug. */ 270237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_DCR, 0); 271237742Simp /* Disable and clear all interrupts. */ 272237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_IDCR, 0xffffffff); 273237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_ICCR, 0xffffffff); 274237742Simp 275237742Simp /* Disable all interrupts for DBGU */ 276237742Simp bus_space_write_4(sc->sc_st, sc->sc_dbg_sh, 0x0c, 0xffffffff); 277237742Simp 278237742Simp if (bus_space_subregion(sc->sc_st, sc->sc_sh, 279237742Simp AT91SAM9X25_MATRIX_BASE, AT91SAM9X25_MATRIX_SIZE, 280237742Simp &sc->sc_matrix_sh) != 0) 281237742Simp panic("Enable to map matrix registers"); 282237742Simp 283237742Simp#if 0 /* wrong, placeholder */ 284237742Simp /* activate NAND*/ 285237742Simp i = bus_space_read_4(sc->sc_st, sc->sc_matrix_sh, 286237742Simp AT91SAM9X25_EBICSA); 287237742Simp bus_space_write_4(sc->sc_st, sc->sc_matrix_sh, 288237742Simp AT91SAM9X25_EBICSA, 289237742Simp i | AT91_MATRIX_EBI_CS3A_SMC_SMARTMEDIA); 290237742Simp#endif 291237742Simp 292237742Simp /* Update USB device port clock info */ 293237742Simp clk = at91_pmc_clock_ref("udpck"); 294237742Simp clk->pmc_mask = PMC_SCER_UDP_SAM9; 295237742Simp at91_pmc_clock_deref(clk); 296237742Simp 297237742Simp /* Update USB host port clock info */ 298237742Simp clk = at91_pmc_clock_ref("uhpck"); 299237742Simp clk->pmc_mask = PMC_SCER_UHP_SAM9; 300237742Simp at91_pmc_clock_deref(clk); 301237742Simp 302237742Simp /* Each SOC has different PLL contraints */ 303237742Simp clk = at91_pmc_clock_ref("plla"); 304237742Simp clk->pll_min_in = SAM9X25_PLL_A_MIN_IN_FREQ; /* 2 MHz */ 305237742Simp clk->pll_max_in = SAM9X25_PLL_A_MAX_IN_FREQ; /* 32 MHz */ 306237742Simp clk->pll_min_out = SAM9X25_PLL_A_MIN_OUT_FREQ; /* 400 MHz */ 307237742Simp clk->pll_max_out = SAM9X25_PLL_A_MAX_OUT_FREQ; /* 800 MHz */ 308237742Simp clk->pll_mul_shift = SAM9X25_PLL_A_MUL_SHIFT; 309237742Simp clk->pll_mul_mask = SAM9X25_PLL_A_MUL_MASK; 310237742Simp clk->pll_div_shift = SAM9X25_PLL_A_DIV_SHIFT; 311237742Simp clk->pll_div_mask = SAM9X25_PLL_A_DIV_MASK; 312237742Simp clk->set_outb = at91_pll_outa; 313237742Simp at91_pmc_clock_deref(clk); 314237742Simp 315237742Simp clk = at91_pmc_clock_ref("pllb"); 316237742Simp clk->pll_min_in = SAM9X25_PLL_B_MIN_IN_FREQ; /* 2 MHz */ 317237742Simp clk->pll_max_in = SAM9X25_PLL_B_MAX_IN_FREQ; /* 32 MHz */ 318237742Simp clk->pll_min_out = SAM9X25_PLL_B_MIN_OUT_FREQ; /* 30 MHz */ 319237742Simp clk->pll_max_out = SAM9X25_PLL_B_MAX_OUT_FREQ; /* 100 MHz */ 320237742Simp clk->pll_mul_shift = SAM9X25_PLL_B_MUL_SHIFT; 321237742Simp clk->pll_mul_mask = SAM9X25_PLL_B_MUL_MASK; 322237742Simp clk->pll_div_shift = SAM9X25_PLL_B_DIV_SHIFT; 323237742Simp clk->pll_div_mask = SAM9X25_PLL_B_DIV_MASK; 324237742Simp clk->set_outb = at91_pll_outb; 325237742Simp at91_pmc_clock_deref(clk); 326237742Simp return (0); 327237742Simp} 328237742Simp 329237742Simpstatic device_method_t at91sam9x25_methods[] = { 330237742Simp DEVMETHOD(device_probe, at91_probe), 331237742Simp DEVMETHOD(device_attach, at91_attach), 332237742Simp DEVMETHOD(device_identify, at91_identify), 333237742Simp {0, 0}, 334237742Simp}; 335237742Simp 336237742Simpstatic driver_t at91sam9x25_driver = { 337237742Simp "at91sam9x25", 338237742Simp at91sam9x25_methods, 339237742Simp sizeof(struct at91sam9x25_softc), 340237742Simp}; 341237742Simp 342237742Simpstatic devclass_t at91sam9x25_devclass; 343237742Simp 344237742SimpDRIVER_MODULE(at91sam9x25, atmelarm, at91sam9x25_driver, at91sam9x25_devclass, 0, 0); 345