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

#include <acpi/acpi.h>
#include <acpi/acpi_gnvs.h>
#include <acpi/acpigen.h>
#include <arch/ioapic.h>
#include <arch/smp/mpspec.h>
#include <console/console.h>
#include <device/mmio.h>
#include <device/pci_ops.h>
#include <intelblocks/cpulib.h>
#include <intelblocks/pmclib.h>
#include <intelblocks/acpi.h>
#include <intelblocks/p2sb.h>
#include <soc/cpu.h>
#include <soc/iomap.h>
#include <soc/nvs.h>
#include <soc/pci_devs.h>
#include <soc/pm.h>
#include <soc/systemagent.h>

#include "chip.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(1),
		.power = C6_POWER,
		.resource = MWAIT_RES(2, 0),
	},
	[C_STATE_C6_LONG_LAT] = {
		.latency = C_STATE_LATENCY_FROM_LAT_REG(2),
		.power = C6_POWER,
		.resource = MWAIT_RES(2, 1),
	},
	[C_STATE_C7_SHORT_LAT] = {
		.latency = C_STATE_LATENCY_FROM_LAT_REG(1),
		.power = C7_POWER,
		.resource = MWAIT_RES(3, 0),
	},
	[C_STATE_C7_LONG_LAT] = {
		.latency = C_STATE_LATENCY_FROM_LAT_REG(2),
		.power = C7_POWER,
		.resource = MWAIT_RES(3, 1),
	},
	[C_STATE_C7S_SHORT_LAT] = {
		.latency = C_STATE_LATENCY_FROM_LAT_REG(1),
		.power = C7_POWER,
		.resource = MWAIT_RES(3, 2),
	},
	[C_STATE_C7S_LONG_LAT] = {
		.latency = C_STATE_LATENCY_FROM_LAT_REG(2),
		.power = C7_POWER,
		.resource = MWAIT_RES(3, 3),
	},
	[C_STATE_C8] = {
		.latency = C_STATE_LATENCY_FROM_LAT_REG(3),
		.power = C8_POWER,
		.resource = MWAIT_RES(4, 0),
	},
	[C_STATE_C9] = {
		.latency = C_STATE_LATENCY_FROM_LAT_REG(4),
		.power = C9_POWER,
		.resource = MWAIT_RES(5, 0),
	},
	[C_STATE_C10] = {
		.latency = C_STATE_LATENCY_FROM_LAT_REG(5),
		.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();

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

void soc_fill_fadt(acpi_fadt_t *fadt)
{
	const uint16_t pmbase = ACPI_BASE_ADDRESS;
	const struct soc_intel_cannonlake_config *config;
	config = config_of_soc();

	fadt->pm_tmr_blk = pmbase + PM1_TMR;
	fadt->pm_tmr_len = 4;

	fill_fadt_extended_pm_io(fadt);

	if (config->s0ix_enable)
		fadt->flags |= ACPI_FADT_LOW_PWR_IDLE_S0;
}

static struct min_sleep_state min_pci_sleep_states[] = {
	{ SA_DEVFN_ROOT,	ACPI_DEVICE_SLEEP_D3 },
	{ SA_DEVFN_PEG0,	ACPI_DEVICE_SLEEP_D3 },
	{ SA_DEVFN_PEG1,	ACPI_DEVICE_SLEEP_D3 },
	{ SA_DEVFN_PEG2,	ACPI_DEVICE_SLEEP_D3 },
	{ SA_DEVFN_IGD,		ACPI_DEVICE_SLEEP_D3 },
	{ SA_DEVFN_TS,		ACPI_DEVICE_SLEEP_D3 },
	{ SA_DEVFN_IPU,		ACPI_DEVICE_SLEEP_D3 },
	{ SA_DEVFN_GNA,		ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_UFS,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_GSPI2,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_ISH,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_XHCI,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_USBOTG,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_CNViWIFI,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_SDCARD,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_I2C0,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_I2C1,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_I2C2,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_I2C3,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_CSE,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_SATA,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_I2C4,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_I2C5,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_UART2,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_EMMC,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_PCIE1,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE2,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE3,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE4,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE5,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE6,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE7,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE8,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE9,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE10,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE11,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE12,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE13,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE14,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE15,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE16,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE17,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE18,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE19,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE20,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE21,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE22,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE23,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_PCIE24,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_UART0,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_UART1,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_GSPI0,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_GSPI1,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_LPC,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_P2SB,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_HDA,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_SMBUS,	ACPI_DEVICE_SLEEP_D0 },
	{ PCH_DEVFN_SPI,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_GBE,	ACPI_DEVICE_SLEEP_D3 },
	{ PCH_DEVFN_TRACEHUB,	ACPI_DEVICE_SLEEP_D3 },
};

struct min_sleep_state *soc_get_min_sleep_state_array(size_t *size)
{
	*size = ARRAY_SIZE(min_pci_sleep_states);
	return min_pci_sleep_states;
}

uint32_t soc_read_sci_irq_select(void)
{
	return read32p(soc_read_pmc_base() + IRQ_REG);
}

void soc_fill_gnvs(struct global_nvs *gnvs)
{
	const struct soc_intel_cannonlake_config *config;
	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;
}

static unsigned long soc_fill_dmar(unsigned long current)
{
	struct device *const igfx_dev = pcidev_path_on_root(SA_DEVFN_IGD);
	uint64_t gfxvtbar = MCHBAR64(GFXVTBAR) & VTBAR_MASK;
	bool gfxvten = MCHBAR32(GFXVTBAR) & VTBAR_ENABLED;
	const bool emit_igd = igfx_dev && igfx_dev->enabled && gfxvtbar && gfxvten;
	if (emit_igd) {
		unsigned long tmp = current;

		current += acpi_create_dmar_drhd(current, 0, 0, gfxvtbar);
		current += acpi_create_dmar_ds_pci(current, 0, 2, 0);

		acpi_dmar_drhd_fixup(tmp, current);
	}

	struct device *const ipu_dev = pcidev_path_on_root(SA_DEVFN_IPU);
	uint64_t ipuvtbar = MCHBAR64(IPUVTBAR) & VTBAR_MASK;
	bool ipuvten = MCHBAR32(IPUVTBAR) & VTBAR_ENABLED;

	if (ipu_dev && ipu_dev->enabled && ipuvtbar && ipuvten) {
		unsigned long tmp = current;

		current += acpi_create_dmar_drhd(current, 0, 0, ipuvtbar);
		current += acpi_create_dmar_ds_pci(current, 0, 5, 0);

		acpi_dmar_drhd_fixup(tmp, current);
	}

	uint64_t vtvc0bar = MCHBAR64(VTVC0BAR) & VTBAR_MASK;
	bool vtvc0en = MCHBAR32(VTVC0BAR) & VTBAR_ENABLED;

	if (vtvc0bar && vtvc0en) {
		const unsigned long tmp = current;

		current += acpi_create_dmar_drhd(current,
				DRHD_INCLUDE_PCI_ALL, 0, vtvc0bar);
		current += acpi_create_dmar_ds_ioapic_from_hw(current,
				IO_APIC_ADDR, V_P2SB_CFG_IBDF_BUS, V_P2SB_CFG_IBDF_DEV,
				V_P2SB_CFG_IBDF_FUNC);
		current += acpi_create_dmar_ds_msi_hpet(current,
				0, V_P2SB_CFG_HBDF_BUS, V_P2SB_CFG_HBDF_DEV,
				V_P2SB_CFG_HBDF_FUNC);

		acpi_dmar_drhd_fixup(tmp, current);
	}

	/* Add RMRR entry after all DRHD entries */
	if (emit_igd) {
		const unsigned long tmp = current;

		current += acpi_create_dmar_rmrr(current, 0,
			sa_get_gsm_base(), sa_get_tolud_base() - 1);
		current += acpi_create_dmar_ds_pci(current, 0, 2, 0);
		acpi_dmar_rmrr_fixup(tmp, current);
	}

	return current;
}

unsigned long sa_write_acpi_tables(const struct device *dev, unsigned long current,
				   struct acpi_rsdp *rsdp)
{
	acpi_dmar_t *const dmar = (acpi_dmar_t *)current;

	/* Create DMAR table only if we have VT-d capability
	 * and FSP does not override its feature.
	 */
	if ((pci_read_config32(dev, CAPID0_A) & VTD_DISABLE) ||
	    !(MCHBAR32(VTVC0BAR) & VTBAR_ENABLED))
		return current;

	printk(BIOS_DEBUG, "ACPI:    * DMAR\n");
	acpi_create_dmar(dmar, DMAR_INTR_REMAP, soc_fill_dmar);

	current += dmar->header.length;
	current = acpi_align_current(current);
	acpi_add_table(rsdp, dmar);

	return current;
}