src/soc/amd/genoa/fch.c

/* SPDX-License-Identifier: GPL-2.0-only */

#include <amdblocks/acpi.h>
#include <amdblocks/acpimmio.h>
#include <amdblocks/amd_pci_util.h>
#include <amdblocks/gpio.h>
#include <amdblocks/smi.h>
#include <bootstate.h>
#include <cpu/x86/smm.h>
#include <soc/acpi.h>
#include <soc/amd_pci_int_defs.h>
#include <soc/smi.h>
#include <soc/southbridge.h>

/*
 * Table of APIC register index and associated IRQ name. Using IDX_XXX_NAME
 * provides a visible association with the index, therefore helping
 * maintainability of table. If a new index/name is defined in
 * amd_pci_int_defs.h, just add the pair at the end of this table.
 * Order is not important.
 */
static const struct irq_idx_name irq_association[] = {
	{ PIRQ_A,	"INTA#" },
	{ PIRQ_B,	"INTB#" },
	{ PIRQ_C,	"INTC#" },
	{ PIRQ_D,	"INTD#" },
	{ PIRQ_E,	"INTE#" },
	{ PIRQ_F,	"INTF#/GENINT2" },
	{ PIRQ_G,	"INTG#" },
	{ PIRQ_H,	"INTH#" },
	{ PIRQ_MISC,	"Misc" },
	{ PIRQ_MISC0,	"Misc0" },
	{ PIRQ_HPET_L,	"HPET_L" },
	{ PIRQ_HPET_H,	"HPET_H" },
	{ PIRQ_SIRQA,	"Ser IRQ INTA" },
	{ PIRQ_SIRQB,	"Ser IRQ INTB" },
	{ PIRQ_SIRQC,	"Ser IRQ INTC" },
	{ PIRQ_SIRQD,	"Ser IRQ INTD" },
	{ PIRQ_SCI,	"SCI" },
	{ PIRQ_SMBUS,	"SMBUS" },
	{ PIRQ_ASF,	"ASF" },
	{ PIRQ_PMON,	"PerMon" },
	{ PIRQ_SDIO,	"SDIO" },
	{ PIRQ_GPP0,	"GPP0" },
	{ PIRQ_GPP1,	"GPP1" },
	{ PIRQ_GPP2,	"GPP2" },
	{ PIRQ_GPP3,	"GPP3" },
	{ PIRQ_GSCI,	"GEvent SCI" },
	{ PIRQ_GSMI,	"GEvent SMI" },
	{ PIRQ_GPIO,	"GPIO" },
	{ PIRQ_I2C0,	"I2C0" },
	{ PIRQ_I2C1,	"I2C1" },
	{ PIRQ_I2C2,	"I2C2" },
	{ PIRQ_I2C3,	"I2C3" },
	{ PIRQ_UART0,	"UART0" },
	{ PIRQ_UART1,	"UART1" },
	{ PIRQ_I2C4,	"I2C4" },
	{ PIRQ_I2C5,	"I2C5" },
	{ PIRQ_UART2,	"UART2" },
	{ PIRQ_UART3,	"UART3" },
};

const struct irq_idx_name *sb_get_apic_reg_association(size_t *size)
{
	*size = ARRAY_SIZE(irq_association);
	return irq_association;
}

static void set_pci_irqs(void)
{
	/* Write PCI_INTR regs 0xC00/0xC01 */
	write_pci_int_table();

	/* TODO: PIRQ configuration */
}

static void fch_init_acpi_ports(void)
{
	/* Configure and enable APMC SMI Command Port */
	pm_write16(PM_ACPI_SMI_CMD, APM_CNT);
	configure_smi(SMITYPE_SMI_CMD_PORT, SMI_MODE_SMI);
}

static void fch_init(void *unused)
{
	set_pci_irqs();
	fch_init_acpi_ports();
}

/*
 * Hook this function into the PCI state machine on entry into BS_DEV_ENABLE.
 * TODO: can this be done without using BOOT_STATE_INIT_ENTRY?
 */
BOOT_STATE_INIT_ENTRY(BS_DEV_ENABLE, BS_ON_ENTRY, fch_init, NULL);