/*      $NetBSD: at91sam9260bus.c,v 1.2 2023/04/21 15:00:48 skrll Exp $ */
/*
 * Copied from at91sam9261bus.c
 * Adaptation to AT91SAM9260 by Aymeric Vincent is in the public domain.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: at91sam9260bus.c,v 1.2 2023/04/21 15:00:48 skrll Exp $");

#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/time.h>
#include <sys/device.h>
#include <uvm/uvm_extern.h>

#include <arm/at91/at91sam9260busvar.h>

const struct at91bus_machdep at91sam9260bus = {
        at91sam9260bus_init,
        at91sam9260bus_attach_cn,
        at91sam9260bus_devmap,

        /* clocking support: */
        at91sam9260bus_peripheral_clock,

        /* PIO support: */
        at91sam9260bus_pio_port,
        at91sam9260bus_gpio_mask,

        /* interrupt handling support: */
        at91sam9260bus_intr_init,
        at91sam9260bus_intr_establish,
        at91sam9260bus_intr_disestablish,
        at91sam9260bus_intr_poll,
        at91sam9260bus_intr_dispatch,

        /* configuration */
        at91sam9260bus_peripheral_name,
        at91sam9260bus_search_peripherals
};

void at91sam9260bus_init(struct at91bus_clocks *clocks) {
        pmap_devmap_register(at91_devmap());
        at91pmc_get_clocks(clocks);
}

const struct pmap_devmap *at91sam9260bus_devmap(void) {
        static const struct pmap_devmap devmap[] = {
            {
                AT91SAM9260_APB_VBASE,
                AT91SAM9260_APB_HWBASE,
                AT91SAM9260_APB_SIZE,
                VM_PROT_READ | VM_PROT_WRITE,
                PTE_NOCACHE
            },

            {
                0, 0, 0, 0, 0
            }
        };

        return devmap;
}

void at91sam9260bus_peripheral_clock(int pid, int enable) {
        switch (pid) {
        case PID_UHP:
                if (enable)
                        PMCREG(PMC_SCER) = PMC_SCSR_SAM_UHP;
                else
                        PMCREG(PMC_SCDR) = PMC_SCSR_SAM_UHP;
                break;
        }
        at91pmc_peripheral_clock(pid, enable);
}

at91pio_port at91sam9260bus_pio_port(int pid) {
        switch (pid) {
        case PID_PIOA:  return AT91_PIOA;
        case PID_PIOB:  return AT91_PIOB;
        case PID_PIOC:  return AT91_PIOC;
        default:        panic("%s: pid %d not valid", __FUNCTION__, pid);
        }

}

uint32_t at91sam9260bus_gpio_mask(int pid) {
        return 0xFFFFFFFFUL;
}

const char *at91sam9260bus_peripheral_name(int pid) {
        switch (pid) {
        case PID_FIQ:   return "FIQ";
        case PID_SYSIRQ:return "SYS";
        case PID_PIOA:  return "PIOA";
        case PID_PIOB:  return "PIOB";
        case PID_PIOC:  return "PIOC";
        case PID_US0:   return "USART0";
        case PID_US1:   return "USART1";
        case PID_US2:   return "USART2";
        case PID_MCI:   return "MCI";
        case PID_UDP:   return "UDP";
        case PID_TWI:   return "TWI";
        case PID_SPI0:  return "SPI0";
        case PID_SPI1:  return "SPI1";
        case PID_SSC:   return "SSC";
        case PID_TC0:   return "TC0";
        case PID_TC1:   return "TC1";
        case PID_TC2:   return "TC2";
        case PID_UHP:   return "UHP";
        case PID_EMAC:  return "EMAC";
        case PID_US3:   return "USART3";
        case PID_US4:   return "USART4";
        case PID_US5:   return "USART5";
        case PID_TC3:   return "TC3";
        case PID_TC4:   return "TC4";
        case PID_TC5:   return "TC5";
        case PID_IRQ0:  return "IRQ0";
        case PID_IRQ1:  return "IRQ1";
        case PID_IRQ2:  return "IRQ2";
        default:        panic("%s: invalid pid %d", __FUNCTION__, pid);
        }
}

void at91sam9260bus_search_peripherals(device_t self,
                           device_t found_func(device_t, bus_addr_t, int)) {
        static const struct {
                bus_addr_t      addr;
                int             pid;
        } table[] = {
                {AT91SAM9260_PMC_BASE,          -1},
                {AT91SAM9260_AIC_BASE,          -1},
                {AT91SAM9260_PIT_BASE,          PID_SYSIRQ},
                {AT91SAM9260_TC0_BASE,          PID_TC0},
                {AT91SAM9260_TC1_BASE,          PID_TC1},
                {AT91SAM9260_TC2_BASE,          PID_TC2},
                {AT91SAM9260_DBGU_BASE,         PID_SYSIRQ},
                {AT91SAM9260_PIOA_BASE,         PID_PIOA},
                {AT91SAM9260_PIOB_BASE,         PID_PIOB},
                {AT91SAM9260_PIOC_BASE,         PID_PIOC},
                {AT91SAM9260_USART0_BASE,       PID_US0},
                {AT91SAM9260_USART1_BASE,       PID_US1},
                {AT91SAM9260_USART2_BASE,       PID_US2},
                {AT91SAM9260_SSC_BASE,          PID_SSC},
//              {AT91SAM9260_EMAC_BASE,         PID_EMAC},
                {AT91SAM9260_TWI_BASE,          PID_TWI},
                {AT91SAM9260_SPI0_BASE,         PID_SPI0},
                {AT91SAM9260_SPI1_BASE,         PID_SPI1},
                {AT91SAM9260_UHP_BASE,          PID_UHP},
                {AT91SAM9260_UDP_BASE,          PID_UDP},
                {AT91SAM9260_MCI_BASE,          PID_MCI},
                {0, 0}
        };
        int i;

        for (i = 0; table[i].addr; i++)
                found_func(self, table[i].addr, table[i].pid);
}