at91sam9x5.c revision 237743
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 237743 2012-06-29 04:49:50Z 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), 113237742Simp DEVICE("at91_twi", TWI0, 0), 114237742Simp DEVICE("at91_twi", TWI1, 1), 115237742Simp DEVICE("at91_twi", TWI2, 2), 116237742Simp DEVICE("at91_mci", HSMCI0, 0), 117237742Simp DEVICE("at91_mci", HSMCI1, 1), 118237742Simp DEVICE("uart", DBGU, 0), 119237742Simp DEVICE("uart", USART0, 1), 120237742Simp DEVICE("uart", USART1, 2), 121237742Simp DEVICE("uart", USART2, 3), 122237742Simp DEVICE("uart", USART3, 4), 123237742Simp DEVICE("spi", SPI0, 0), 124237742Simp DEVICE("spi", SPI1, 1), 125237742Simp DEVICE("macb", EMAC0, 0), 126237742Simp DEVICE("macb", EMAC1, 0), 127237742Simp DEVICE("nand", NAND, 0), 128237742Simp DEVICE("ohci", OHCI, 0), 129237742Simp DEVICE("ehci", EHCI, 0), 130237742Simp { 0, 0, 0, 0, 0 } 131237742Simp}; 132237742Simp 133237742Simpstatic void 134237742Simpat91_add_child(device_t dev, int prio, const char *name, int unit, 135237742Simp bus_addr_t addr, bus_size_t size, int irq0, int irq1, int irq2) 136237742Simp{ 137237742Simp device_t kid; 138237742Simp struct at91_ivar *ivar; 139237742Simp 140237742Simp kid = device_add_child_ordered(dev, prio, name, unit); 141237742Simp if (kid == NULL) { 142237742Simp printf("Can't add child %s%d ordered\n", name, unit); 143237742Simp return; 144237742Simp } 145237742Simp ivar = malloc(sizeof(*ivar), M_DEVBUF, M_NOWAIT | M_ZERO); 146237742Simp if (ivar == NULL) { 147237742Simp device_delete_child(dev, kid); 148237742Simp printf("Can't add alloc ivar\n"); 149237742Simp return; 150237742Simp } 151237742Simp device_set_ivars(kid, ivar); 152237742Simp resource_list_init(&ivar->resources); 153237742Simp if (irq0 != -1) { 154237742Simp bus_set_resource(kid, SYS_RES_IRQ, 0, irq0, 1); 155237742Simp if (irq0 != AT91SAM9X25_IRQ_SYSTEM) 156237742Simp at91_pmc_clock_add(device_get_nameunit(kid), irq0, 0); 157237742Simp } 158237742Simp if (irq1 != 0) 159237742Simp bus_set_resource(kid, SYS_RES_IRQ, 1, irq1, 1); 160237742Simp if (irq2 != 0) 161237742Simp bus_set_resource(kid, SYS_RES_IRQ, 2, irq2, 1); 162237742Simp if (addr != 0 && addr < AT91SAM9X25_BASE) 163237742Simp addr += AT91SAM9X25_BASE; 164237742Simp if (addr != 0) 165237742Simp bus_set_resource(kid, SYS_RES_MEMORY, 0, addr, size); 166237742Simp} 167237742Simp 168237742Simpstatic void 169237742Simpat91_cpu_add_builtin_children(device_t dev) 170237742Simp{ 171237742Simp int i; 172237742Simp const struct cpu_devs *walker; 173237742Simp 174237742Simp for (i = 1, walker = at91_devs; walker->name; i++, walker++) { 175237742Simp at91_add_child(dev, i, walker->name, walker->unit, 176237742Simp walker->mem_base, walker->mem_len, walker->irq0, 177237742Simp walker->irq1, walker->irq2); 178237742Simp } 179237742Simp} 180237742Simp 181237742Simpstatic uint32_t 182237742Simpat91_pll_outa(int freq) 183237742Simp{ 184237742Simp 185237742Simp switch (freq / 10000000) { 186237742Simp case 747 ... 801: return ((1 << 29) | (0 << 14)); 187237742Simp case 697 ... 746: return ((1 << 29) | (1 << 14)); 188237742Simp case 647 ... 696: return ((1 << 29) | (2 << 14)); 189237742Simp case 597 ... 646: return ((1 << 29) | (3 << 14)); 190237742Simp case 547 ... 596: return ((1 << 29) | (1 << 14)); 191237742Simp case 497 ... 546: return ((1 << 29) | (2 << 14)); 192237742Simp case 447 ... 496: return ((1 << 29) | (3 << 14)); 193237742Simp case 397 ... 446: return ((1 << 29) | (4 << 14)); 194237742Simp default: return (1 << 29); 195237742Simp } 196237742Simp} 197237742Simp 198237742Simpstatic uint32_t 199237742Simpat91_pll_outb(int freq) 200237742Simp{ 201237742Simp 202237742Simp return (0); 203237742Simp} 204237742Simp 205237742Simpstatic void 206237742Simpat91_identify(driver_t *drv, device_t parent) 207237742Simp{ 208237742Simp 209237742Simp if (soc_data.type == AT91_T_SAM9X5 && soc_data.subtype == AT91_ST_SAM9X25) { 210237742Simp at91_add_child(parent, 0, "at91sam9x25", 0, 0, 0, -1, 0, 0); 211237742Simp at91_cpu_add_builtin_children(parent); 212237742Simp } 213237742Simp} 214237742Simp 215237742Simpstatic int 216237742Simpat91_probe(device_t dev) 217237742Simp{ 218237742Simp 219237742Simp device_set_desc(dev, "AT91SAM9X25"); 220237742Simp return (0); 221237742Simp} 222237742Simp 223237742Simpstatic int 224237742Simpat91_attach(device_t dev) 225237742Simp{ 226237742Simp struct at91_pmc_clock *clk; 227237742Simp struct at91sam9x25_softc *sc = device_get_softc(dev); 228237742Simp int i; 229237742Simp 230237742Simp struct at91_softc *at91sc = device_get_softc(device_get_parent(dev)); 231237742Simp 232237742Simp sc->sc_st = at91sc->sc_st; 233237742Simp sc->sc_sh = at91sc->sc_sh; 234237742Simp sc->dev = dev; 235237742Simp 236237742Simp /* 237237742Simp * XXX These values work for the RM9200, SAM926[01], and SAM9X25 238237742Simp * will have to fix this when we want to support anything else. XXX 239237742Simp */ 240237742Simp if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91SAM9X25_SYS_BASE, 241237742Simp AT91SAM9X25_SYS_SIZE, &sc->sc_sys_sh) != 0) 242237742Simp panic("Enable to map system registers"); 243237742Simp 244237742Simp if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91SAM9X25_DBGU_BASE, 245237742Simp AT91SAM9X25_DBGU_SIZE, &sc->sc_dbg_sh) != 0) 246237742Simp panic("Enable to map DBGU registers"); 247237742Simp 248237742Simp if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91SAM9X25_AIC_BASE, 249237742Simp AT91SAM9X25_AIC_SIZE, &sc->sc_aic_sh) != 0) 250237742Simp panic("Enable to map system registers"); 251237742Simp 252237742Simp /* XXX Hack to tell atmelarm about the AIC */ 253237742Simp at91sc->sc_aic_sh = sc->sc_aic_sh; 254237742Simp at91sc->sc_irq_system = AT91SAM9X25_IRQ_SYSTEM; 255237742Simp 256237742Simp for (i = 0; i < 32; i++) { 257237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SVR + 258237742Simp i * 4, i); 259237742Simp /* Priority. */ 260237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SMR + i * 4, 261237742Simp at91_irq_prio[i]); 262237742Simp if (i < 8) 263237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_EOICR, 264237742Simp 1); 265237742Simp } 266237742Simp 267237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SPU, 32); 268237742Simp /* No debug. */ 269237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_DCR, 0); 270237742Simp /* Disable and clear all interrupts. */ 271237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_IDCR, 0xffffffff); 272237742Simp bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_ICCR, 0xffffffff); 273237742Simp 274237742Simp /* Disable all interrupts for DBGU */ 275237742Simp bus_space_write_4(sc->sc_st, sc->sc_dbg_sh, 0x0c, 0xffffffff); 276237742Simp 277237742Simp if (bus_space_subregion(sc->sc_st, sc->sc_sh, 278237742Simp AT91SAM9X25_MATRIX_BASE, AT91SAM9X25_MATRIX_SIZE, 279237742Simp &sc->sc_matrix_sh) != 0) 280237742Simp panic("Enable to map matrix registers"); 281237742Simp 282237742Simp#if 0 /* wrong, placeholder */ 283237742Simp /* activate NAND*/ 284237742Simp i = bus_space_read_4(sc->sc_st, sc->sc_matrix_sh, 285237742Simp AT91SAM9X25_EBICSA); 286237742Simp bus_space_write_4(sc->sc_st, sc->sc_matrix_sh, 287237742Simp AT91SAM9X25_EBICSA, 288237742Simp i | AT91_MATRIX_EBI_CS3A_SMC_SMARTMEDIA); 289237742Simp#endif 290237742Simp 291237742Simp /* Update USB device port clock info */ 292237742Simp clk = at91_pmc_clock_ref("udpck"); 293237742Simp clk->pmc_mask = PMC_SCER_UDP_SAM9; 294237742Simp at91_pmc_clock_deref(clk); 295237742Simp 296237742Simp /* Update USB host port clock info */ 297237742Simp clk = at91_pmc_clock_ref("uhpck"); 298237742Simp clk->pmc_mask = PMC_SCER_UHP_SAM9; 299237742Simp at91_pmc_clock_deref(clk); 300237742Simp 301237742Simp /* Each SOC has different PLL contraints */ 302237742Simp clk = at91_pmc_clock_ref("plla"); 303237742Simp clk->pll_min_in = SAM9X25_PLL_A_MIN_IN_FREQ; /* 2 MHz */ 304237742Simp clk->pll_max_in = SAM9X25_PLL_A_MAX_IN_FREQ; /* 32 MHz */ 305237742Simp clk->pll_min_out = SAM9X25_PLL_A_MIN_OUT_FREQ; /* 400 MHz */ 306237742Simp clk->pll_max_out = SAM9X25_PLL_A_MAX_OUT_FREQ; /* 800 MHz */ 307237742Simp clk->pll_mul_shift = SAM9X25_PLL_A_MUL_SHIFT; 308237742Simp clk->pll_mul_mask = SAM9X25_PLL_A_MUL_MASK; 309237742Simp clk->pll_div_shift = SAM9X25_PLL_A_DIV_SHIFT; 310237742Simp clk->pll_div_mask = SAM9X25_PLL_A_DIV_MASK; 311237742Simp clk->set_outb = at91_pll_outa; 312237742Simp at91_pmc_clock_deref(clk); 313237742Simp 314237742Simp clk = at91_pmc_clock_ref("pllb"); 315237742Simp clk->pll_min_in = SAM9X25_PLL_B_MIN_IN_FREQ; /* 2 MHz */ 316237742Simp clk->pll_max_in = SAM9X25_PLL_B_MAX_IN_FREQ; /* 32 MHz */ 317237742Simp clk->pll_min_out = SAM9X25_PLL_B_MIN_OUT_FREQ; /* 30 MHz */ 318237742Simp clk->pll_max_out = SAM9X25_PLL_B_MAX_OUT_FREQ; /* 100 MHz */ 319237742Simp clk->pll_mul_shift = SAM9X25_PLL_B_MUL_SHIFT; 320237742Simp clk->pll_mul_mask = SAM9X25_PLL_B_MUL_MASK; 321237742Simp clk->pll_div_shift = SAM9X25_PLL_B_DIV_SHIFT; 322237742Simp clk->pll_div_mask = SAM9X25_PLL_B_DIV_MASK; 323237742Simp clk->set_outb = at91_pll_outb; 324237742Simp at91_pmc_clock_deref(clk); 325237742Simp return (0); 326237742Simp} 327237742Simp 328237742Simpstatic device_method_t at91sam9x25_methods[] = { 329237742Simp DEVMETHOD(device_probe, at91_probe), 330237742Simp DEVMETHOD(device_attach, at91_attach), 331237742Simp DEVMETHOD(device_identify, at91_identify), 332237742Simp {0, 0}, 333237742Simp}; 334237742Simp 335237742Simpstatic driver_t at91sam9x25_driver = { 336237742Simp "at91sam9x25", 337237742Simp at91sam9x25_methods, 338237742Simp sizeof(struct at91sam9x25_softc), 339237742Simp}; 340237742Simp 341237742Simpstatic devclass_t at91sam9x25_devclass; 342237742Simp 343237742SimpDRIVER_MODULE(at91sam9x25, atmelarm, at91sam9x25_driver, at91sam9x25_devclass, 0, 0); 344