/*      $Id: at91sam9261bus.c,v 1.4 2023/04/21 15:04:47 skrll Exp $     */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: at91sam9261bus.c,v 1.4 2023/04/21 15:04:47 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/at91sam9261busvar.h>

const struct at91bus_machdep at91sam9261bus = {
        at91sam9261bus_init,
        at91sam9261bus_attach_cn,
        at91sam9261bus_devmap,

        /* clocking support: */
        at91sam9261bus_peripheral_clock,

        /* PIO support: */
        at91sam9261bus_pio_port,
        at91sam9261bus_gpio_mask,

        /* interrupt handling support: */
        at91sam9261bus_intr_init,
        at91sam9261bus_intr_establish,
        at91sam9261bus_intr_disestablish,
        at91sam9261bus_intr_poll,
        at91sam9261bus_intr_dispatch,

        /* configuration */
        at91sam9261bus_peripheral_name,
        at91sam9261bus_search_peripherals
};

void at91sam9261bus_init(struct at91bus_clocks *clocks)
{
        pmap_devmap_register(at91_devmap());
        at91pmc_get_clocks(clocks);
}

const struct pmap_devmap *at91sam9261bus_devmap(void)
{
        static const struct pmap_devmap devmap[] = {
            DEVMAP_ENTRY(
                AT91SAM9261_APB_VBASE,
                AT91SAM9261_APB_HWBASE,
                AT91SAM9261_APB_SIZE
            ),
            DEVMAP_ENTRY_END
        };

        return devmap;
}

void at91sam9261bus_peripheral_clock(int pid, int enable)
{
        switch (pid) {
        case PID_UHP:
                if (enable)
                        PMCREG(PMC_SCER) = PMC_SCSR_UHP;
                else
                        PMCREG(PMC_SCDR) = PMC_SCSR_UHP;
                break;
        }
        at91pmc_peripheral_clock(pid, enable);
}

at91pio_port at91sam9261bus_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 at91sam9261bus_gpio_mask(int pid)
{
        return 0xFFFFFFFFUL;
}

const char *at91sam9261bus_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_SSC0:  return "SSC0";
        case PID_SSC1:  return "SSC1";
        case PID_SSC2:  return "SSC2";
        case PID_TC0:   return "TC0";
        case PID_TC1:   return "TC1";
        case PID_TC2:   return "TC2";
        case PID_UHP:   return "UHP";
        case PID_LCDC:  return "LCDC";
        case PID_IRQ0:  return "IRQ0";
        case PID_IRQ1:  return "IRQ1";
        case PID_IRQ2:  return "IRQ2";
        default:        panic("%s: invalid pid %d", __FUNCTION__, pid);
        }
}

void at91sam9261bus_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[] = {
                {AT91SAM9261_PMC_BASE,          -1},
                {AT91SAM9261_AIC_BASE,          -1},
                {AT91SAM9261_PIT_BASE,          PID_SYSIRQ},
                {AT91SAM9261_TC0_BASE,          PID_TC0},
                {AT91SAM9261_TC1_BASE,          PID_TC1},
                {AT91SAM9261_TC2_BASE,          PID_TC2},
                {AT91SAM9261_DBGU_BASE,         PID_SYSIRQ},
                {AT91SAM9261_PIOA_BASE,         PID_PIOA},
                {AT91SAM9261_PIOB_BASE,         PID_PIOB},
                {AT91SAM9261_PIOC_BASE,         PID_PIOC},
                {AT91SAM9261_USART0_BASE,       PID_US0},
                {AT91SAM9261_USART1_BASE,       PID_US1},
                {AT91SAM9261_USART2_BASE,       PID_US2},
                {AT91SAM9261_SSC0_BASE,         PID_SSC0},
                {AT91SAM9261_SSC1_BASE,         PID_SSC1},
                {AT91SAM9261_SSC2_BASE,         PID_SSC2},
                {AT91SAM9261_TWI_BASE,          PID_TWI},
                {AT91SAM9261_SPI0_BASE,         PID_SPI0},
                {AT91SAM9261_SPI1_BASE,         PID_SPI1},
                {AT91SAM9261_UHP_BASE,          PID_UHP},
                {AT91SAM9261_LCD_BASE,          PID_LCDC},
                {AT91SAM9261_UDP_BASE,          PID_UDP},
                {AT91SAM9261_MCI_BASE,          PID_MCI},
                {0, 0}
        };
        int i;

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