/*- * Copyright (c) 2005 Olivier Houchard. All rights reserved. * Copyright (c) 2010 Greg Ansley. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #define _ARM32_BUS_DMA_PRIVATE #include #include #include #include #include #include struct at91rm92_softc { device_t dev; bus_space_tag_t sc_st; bus_space_handle_t sc_sh; bus_space_handle_t sc_sys_sh; bus_space_handle_t sc_aic_sh; bus_space_handle_t sc_dbg_sh; bus_space_handle_t sc_matrix_sh; }; /* * Standard priority levels for the system. 0 is lowest and 7 is highest. * These values are the ones Atmel uses for its Linux port, which differ * a little form the ones that are in the standard distribution. Also, * the ones marked with 'TWEEK' are different based on experience. */ static const int at91_irq_prio[32] = { 7, /* Advanced Interrupt Controller (FIQ) */ 7, /* System Peripherals */ 1, /* Parallel IO Controller A */ 1, /* Parallel IO Controller B */ 1, /* Parallel IO Controller C */ 1, /* Parallel IO Controller D */ 5, /* USART 0 */ 5, /* USART 1 */ 5, /* USART 2 */ 5, /* USART 3 */ 0, /* Multimedia Card Interface */ 2, /* USB Device Port */ 4, /* Two-Wire Interface */ /* TWEEK */ 5, /* Serial Peripheral Interface */ 4, /* Serial Synchronous Controller 0 */ 6, /* Serial Synchronous Controller 1 */ /* TWEEK */ 4, /* Serial Synchronous Controller 2 */ 0, /* Timer Counter 0 */ 6, /* Timer Counter 1 */ /* TWEEK */ 0, /* Timer Counter 2 */ 0, /* Timer Counter 3 */ 0, /* Timer Counter 4 */ 0, /* Timer Counter 5 */ 2, /* USB Host port */ 3, /* Ethernet MAC */ 0, /* Advanced Interrupt Controller (IRQ0) */ 0, /* Advanced Interrupt Controller (IRQ1) */ 0, /* Advanced Interrupt Controller (IRQ2) */ 0, /* Advanced Interrupt Controller (IRQ3) */ 0, /* Advanced Interrupt Controller (IRQ4) */ 0, /* Advanced Interrupt Controller (IRQ5) */ 0 /* Advanced Interrupt Controller (IRQ6) */ }; #define DEVICE(_name, _id, _unit) \ { \ _name, _unit, \ AT91RM92_ ## _id ##_BASE, \ AT91RM92_ ## _id ## _SIZE, \ AT91RM92_IRQ_ ## _id \ } static const struct cpu_devs at91_devs[] = { DEVICE("at91_pmc", PMC, 0), DEVICE("at91_st", ST, 0), DEVICE("at91_pio", PIOA, 0), DEVICE("at91_pio", PIOB, 1), DEVICE("at91_pio", PIOC, 2), DEVICE("at91_pio", PIOD, 3), DEVICE("at91_rtc", RTC, 0), DEVICE("at91_mci", MCI, 0), DEVICE("at91_twi", TWI, 0), DEVICE("at91_udp", UDP, 0), DEVICE("ate", EMAC, 0), DEVICE("at91_ssc", SSC0, 0), DEVICE("at91_ssc", SSC1, 1), DEVICE("at91_ssc", SSC2, 2), DEVICE("spi", SPI, 0), DEVICE("uart", DBGU, 0), DEVICE("uart", USART0, 1), DEVICE("uart", USART1, 2), DEVICE("uart", USART2, 3), DEVICE("uart", USART3, 4), DEVICE("at91_aic", AIC, 0), DEVICE("at91_mc", MC, 0), DEVICE("at91_tc", TC0, 0), DEVICE("at91_tc", TC1, 1), DEVICE("ohci", OHCI, 0), DEVICE("af91_cfata", CF, 0), { 0, 0, 0, 0, 0 } }; static void at91_add_child(device_t dev, int prio, const char *name, int unit, bus_addr_t addr, bus_size_t size, int irq0, int irq1, int irq2) { device_t kid; struct at91_ivar *ivar; kid = device_add_child_ordered(dev, prio, name, unit); if (kid == NULL) { printf("Can't add child %s%d ordered\n", name, unit); return; } ivar = malloc(sizeof(*ivar), M_DEVBUF, M_NOWAIT | M_ZERO); if (ivar == NULL) { device_delete_child(dev, kid); printf("Can't add alloc ivar\n"); return; } device_set_ivars(kid, ivar); resource_list_init(&ivar->resources); if (irq0 != -1) { bus_set_resource(kid, SYS_RES_IRQ, 0, irq0, 1); if (irq0 != AT91RM92_IRQ_SYSTEM) at91_pmc_clock_add(device_get_nameunit(kid), irq0, 0); } if (irq1 != 0) bus_set_resource(kid, SYS_RES_IRQ, 1, irq1, 1); if (irq2 != 0) bus_set_resource(kid, SYS_RES_IRQ, 2, irq2, 1); if (addr != 0 && addr < AT91RM92_BASE) addr += AT91RM92_BASE; if (addr != 0) bus_set_resource(kid, SYS_RES_MEMORY, 0, addr, size); } static void at91_cpu_add_builtin_children(device_t dev) { int i; const struct cpu_devs *walker; for (i = 1, walker = at91_devs; walker->name; i++, walker++) { at91_add_child(dev, i, walker->name, walker->unit, walker->mem_base, walker->mem_len, walker->irq0, walker->irq1, walker->irq2); } } static uint32_t at91_pll_outb(int freq) { if (freq > 155000000) return (0x0000); else return (0x8000); } static void at91_identify(driver_t *drv, device_t parent) { if (at91_cpu_is(AT91_CPU_RM9200)) { at91_add_child(parent, 0, "at91rm920", 0, 0, 0, -1, 0, 0); at91_cpu_add_builtin_children(parent); } } static int at91_probe(device_t dev) { if (at91_cpu_is(AT91_CPU_RM9200)) { device_set_desc(dev, "AT91RM9200"); return (0); } return (ENXIO); } static int at91_attach(device_t dev) { struct at91_pmc_clock *clk; struct at91rm92_softc *sc = device_get_softc(dev); int i; struct at91_softc *at91sc = device_get_softc(device_get_parent(dev)); sc->sc_st = at91sc->sc_st; sc->sc_sh = at91sc->sc_sh; sc->dev = dev; if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91RM92_SYS_BASE, AT91RM92_SYS_SIZE, &sc->sc_sys_sh) != 0) panic("Enable to map system registers"); if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91RM92_DBGU_BASE, AT91RM92_DBGU_SIZE, &sc->sc_dbg_sh) != 0) panic("Enable to map DBGU registers"); if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91RM92_AIC_BASE, AT91RM92_AIC_SIZE, &sc->sc_aic_sh) != 0) panic("Enable to map system registers"); /* XXX Hack to tell atmelarm about the AIC */ at91sc->sc_aic_sh = sc->sc_aic_sh; at91sc->sc_irq_system = AT91RM92_IRQ_SYSTEM; for (i = 0; i < 32; i++) { bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SVR + i * 4, i); /* Priority. */ bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SMR + i * 4, at91_irq_prio[i]); if (i < 8) bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_EOICR, 1); } bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SPU, 32); /* No debug. */ bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_DCR, 0); /* Disable and clear all interrupts. */ bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_IDCR, 0xffffffff); bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_ICCR, 0xffffffff); /* Disable all interrupts for RTC (0xe24 == RTC_IDR) */ bus_space_write_4(sc->sc_st, sc->sc_sys_sh, 0xe24, 0xffffffff); /* Disable all interrupts for the SDRAM controller */ bus_space_write_4(sc->sc_st, sc->sc_sys_sh, 0xfa8, 0xffffffff); /* Disable all interrupts for DBGU */ bus_space_write_4(sc->sc_st, sc->sc_dbg_sh, 0x0c, 0xffffffff); /* Update USB device port clock info */ clk = at91_pmc_clock_ref("udpck"); clk->pmc_mask = PMC_SCER_UDP; at91_pmc_clock_deref(clk); /* Update USB host port clock info */ clk = at91_pmc_clock_ref("uhpck"); clk->pmc_mask = PMC_SCER_UHP; at91_pmc_clock_deref(clk); /* Each SOC has different PLL contraints */ clk = at91_pmc_clock_ref("plla"); clk->pll_min_in = RM9200_PLL_A_MIN_IN_FREQ; /* 1 MHz */ clk->pll_max_in = RM9200_PLL_A_MAX_IN_FREQ; /* 32 MHz */ clk->pll_min_out = RM9200_PLL_A_MIN_OUT_FREQ; /* 80 MHz */ clk->pll_max_out = RM9200_PLL_A_MAX_OUT_FREQ; /* 180 MHz */ clk->pll_mul_shift = RM9200_PLL_A_MUL_SHIFT; clk->pll_mul_mask = RM9200_PLL_A_MUL_MASK; clk->pll_div_shift = RM9200_PLL_A_DIV_SHIFT; clk->pll_div_mask = RM9200_PLL_A_DIV_MASK; clk->set_outb = at91_pll_outb; at91_pmc_clock_deref(clk); clk = at91_pmc_clock_ref("pllb"); clk->pll_min_in = RM9200_PLL_B_MIN_IN_FREQ; /* 100 KHz */ clk->pll_max_in = RM9200_PLL_B_MAX_IN_FREQ; /* 32 MHz */ clk->pll_min_out = RM9200_PLL_B_MIN_OUT_FREQ; /* 30 MHz */ clk->pll_max_out = RM9200_PLL_B_MAX_OUT_FREQ; /* 240 MHz */ clk->pll_mul_shift = RM9200_PLL_B_MUL_SHIFT; clk->pll_mul_mask = RM9200_PLL_B_MUL_MASK; clk->pll_div_shift = RM9200_PLL_B_DIV_SHIFT; clk->pll_div_mask = RM9200_PLL_B_DIV_MASK; clk->set_outb = at91_pll_outb; at91_pmc_clock_deref(clk); return (0); } static device_method_t at91_methods[] = { DEVMETHOD(device_probe, at91_probe), DEVMETHOD(device_attach, at91_attach), DEVMETHOD(device_identify, at91_identify), {0, 0}, }; static driver_t at91rm92_driver = { "at91rm920", at91_methods, sizeof(struct at91rm92_softc), }; static devclass_t at91rm92_devclass; DRIVER_MODULE(at91rm920, atmelarm, at91rm92_driver, at91rm92_devclass, 0, 0);