src/soc/intel/icelake/acpi.c

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

#include <acpi/acpi.h>
#include <acpi/acpi_gnvs.h>
#include <acpi/acpigen.h>
#include <device/mmio.h>
#include <arch/smp/mpspec.h>
#include <intelblocks/cpulib.h>
#include <intelblocks/pmclib.h>
#include <intelblocks/acpi.h>
#include <soc/cpu.h>
#include <soc/iomap.h>
#include <soc/nvs.h>
#include <soc/pci_devs.h>
#include <soc/pm.h>
#include <soc/soc_chip.h>
#include <soc/systemagent.h>

/*
 * List of supported C-states in this processor.
 */
enum {
	C_STATE_C0,		/* 0 */
	C_STATE_C1,		/* 1 */
	C_STATE_C1E,		/* 2 */
	C_STATE_C6_SHORT_LAT,	/* 3 */
	C_STATE_C6_LONG_LAT,	/* 4 */
	C_STATE_C7_SHORT_LAT,	/* 5 */
	C_STATE_C7_LONG_LAT,	/* 6 */
	C_STATE_C7S_SHORT_LAT,	/* 7 */
	C_STATE_C7S_LONG_LAT,	/* 8 */
	C_STATE_C8,		/* 9 */
	C_STATE_C9,		/* 10 */
	C_STATE_C10,		/* 11 */
	NUM_C_STATES
};

static const acpi_cstate_t cstate_map[NUM_C_STATES] = {
	[C_STATE_C0] = {},
	[C_STATE_C1] = {
		.latency = 0,
		.power = C1_POWER,
		.resource = MWAIT_RES(0, 0),
	},
	[C_STATE_C1E] = {
		.latency = 0,
		.power = C1_POWER,
		.resource = MWAIT_RES(0, 1),
	},
	[C_STATE_C6_SHORT_LAT] = {
		.latency = C_STATE_LATENCY_FROM_LAT_REG(0),
		.power = C6_POWER,
		.resource = MWAIT_RES(2, 0),
	},
	[C_STATE_C6_LONG_LAT] = {
		.latency = C_STATE_LATENCY_FROM_LAT_REG(0),
		.power = C6_POWER,
		.resource = MWAIT_RES(2, 1),
	},
	[C_STATE_C7_SHORT_LAT] = {
		.latency = C_STATE_LATENCY_FROM_LAT_REG(0),
		.power = C7_POWER,
		.resource = MWAIT_RES(3, 0),
	},
	[C_STATE_C7_LONG_LAT] = {
		.latency = C_STATE_LATENCY_FROM_LAT_REG(0),
		.power = C7_POWER,
		.resource = MWAIT_RES(3, 1),
	},
	[C_STATE_C7S_SHORT_LAT] = {
		.latency = C_STATE_LATENCY_FROM_LAT_REG(0),
		.power = C7_POWER,
		.resource = MWAIT_RES(3, 2),
	},
	[C_STATE_C7S_LONG_LAT] = {
		.latency = C_STATE_LATENCY_FROM_LAT_REG(0),
		.power = C7_POWER,
		.resource = MWAIT_RES(3, 3),
	},
	[C_STATE_C8] = {
		.latency = C_STATE_LATENCY_FROM_LAT_REG(0),
		.power = C8_POWER,
		.resource = MWAIT_RES(4, 0),
	},
	[C_STATE_C9] = {
		.latency = C_STATE_LATENCY_FROM_LAT_REG(0),
		.power = C9_POWER,
		.resource = MWAIT_RES(5, 0),
	},
	[C_STATE_C10] = {
		.latency = C_STATE_LATENCY_FROM_LAT_REG(0),
		.power = C10_POWER,
		.resource = MWAIT_RES(6, 0),
	},
};

static int cstate_set_non_s0ix[] = {
	C_STATE_C1E,
	C_STATE_C6_LONG_LAT,
	C_STATE_C7S_LONG_LAT
};

static int cstate_set_s0ix[] = {
	C_STATE_C1E,
	C_STATE_C7S_LONG_LAT,
	C_STATE_C10
};

const acpi_cstate_t *soc_get_cstate_map(size_t *entries)
{
	static acpi_cstate_t map[MAX(ARRAY_SIZE(cstate_set_s0ix),
				ARRAY_SIZE(cstate_set_non_s0ix))];
	int *set;
	int i;

	config_t *config = config_of_soc();

	int is_s0ix_enable = config->s0ix_enable;

	if (is_s0ix_enable) {
		*entries = ARRAY_SIZE(cstate_set_s0ix);
		set = cstate_set_s0ix;
	} else {
		*entries = ARRAY_SIZE(cstate_set_non_s0ix);
		set = cstate_set_non_s0ix;
	}

	for (i = 0; i < *entries; i++) {
		map[i] = cstate_map[set[i]];
		map[i].ctype = i + 1;
	}
	return map;
}

void soc_power_states_generation(int core_id, int cores_per_package)
{
	config_t *config = config_of_soc();

	if (config->eist_enable)
		/* Generate P-state tables */
		generate_p_state_entries(core_id, cores_per_package);
}

void soc_fill_fadt(acpi_fadt_t *fadt)
{
	const uint16_t pmbase = ACPI_BASE_ADDRESS;

	config_t *config = config_of_soc();

	fadt->pm_tmr_blk = pmbase + PM1_TMR;
	fadt->pm_tmr_len = 4;
	fadt->x_pm_tmr_blk.space_id = ACPI_ADDRESS_SPACE_IO;
	fadt->x_pm_tmr_blk.bit_width = fadt->pm_tmr_len * 8;
	fadt->x_pm_tmr_blk.bit_offset = 0;
	fadt->x_pm_tmr_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS;
	fadt->x_pm_tmr_blk.addrl = fadt->pm_tmr_blk;
	fadt->x_pm_tmr_blk.addrh = 0x0;

	if (config->s0ix_enable)
		fadt->flags |= ACPI_FADT_LOW_PWR_IDLE_S0;
}
uint32_t soc_read_sci_irq_select(void)
{
	return read32p(soc_read_pmc_base() + IRQ_REG);
}

void soc_fill_gnvs(struct global_nvs *gnvs)
{
	config_t *config = config_of_soc();

	/* Enable DPTF based on mainboard configuration */
	gnvs->dpte = config->dptf_enable;

	/* Set USB2/USB3 wake enable bitmaps. */
	gnvs->u2we = config->usb2_wake_enable_bitmap;
	gnvs->u3we = config->usb3_wake_enable_bitmap;
}

int soc_madt_sci_irq_polarity(int sci)
{
	return MP_IRQ_POLARITY_HIGH;
}