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// SPDX-License-Identifier: GPL-2.0
/*
* Support for Intel Application Digital Signal Processor
*
* Copyright 2019 Google LLC
*
* Modified from coreboot file of the same name
*/
#define LOG_CATEGORY UCLASS_SYSCON
#include <common.h>
#include <dm.h>
#include <pci.h>
#include <asm/io.h>
#include <asm/cpu.h>
#include <asm/intel_regs.h>
#include <asm/arch/adsp.h>
#include <asm/arch/pch.h>
#include <asm/arch/rcb.h>
enum pci_type_t {
LYNX_POINT,
WILDCAT_POINT,
};
struct broadwell_adsp_priv {
bool adsp_d3_pg_enable;
bool adsp_sram_pg_enable;
bool sio_acpi_mode;
};
static int broadwell_adsp_probe(struct udevice *dev)
{
struct broadwell_adsp_priv *priv = dev_get_priv(dev);
enum pci_type_t type;
u32 bar0, bar1;
u32 tmp32;
/* Find BAR0 and BAR1 */
bar0 = dm_pci_read_bar32(dev, 0);
if (!bar0)
return -EINVAL;
bar1 = dm_pci_read_bar32(dev, 1);
if (!bar1)
return -EINVAL;
/*
* Set LTR value in DSP shim LTR control register to 3ms
* SNOOP_REQ[13]=1b SNOOP_SCALE[12:10]=100b (1ms) SNOOP_VAL[9:0]=3h
*/
type = dev_get_driver_data(dev);
tmp32 = type == WILDCAT_POINT ? ADSP_SHIM_BASE_WPT : ADSP_SHIM_BASE_LPT;
writel(ADSP_SHIM_LTRC_VALUE, bar0 + tmp32);
/* Program VDRTCTL2 D19:F0:A8[31:0] = 0x00000fff */
dm_pci_write_config32(dev, ADSP_PCI_VDRTCTL2, ADSP_VDRTCTL2_VALUE);
/* Program ADSP IOBP VDLDAT1 to 0x040100 */
pch_iobp_write(ADSP_IOBP_VDLDAT1, ADSP_VDLDAT1_VALUE);
/* Set D3 Power Gating Enable in D19:F0:A0 based on PCH type */
dm_pci_read_config32(dev, ADSP_PCI_VDRTCTL0, &tmp32);
if (type == WILDCAT_POINT) {
if (priv->adsp_d3_pg_enable) {
tmp32 &= ~ADSP_VDRTCTL0_D3PGD_WPT;
if (priv->adsp_sram_pg_enable)
tmp32 &= ~ADSP_VDRTCTL0_D3SRAMPGD_WPT;
else
tmp32 |= ADSP_VDRTCTL0_D3SRAMPGD_WPT;
} else {
tmp32 |= ADSP_VDRTCTL0_D3PGD_WPT;
}
} else {
if (priv->adsp_d3_pg_enable) {
tmp32 &= ~ADSP_VDRTCTL0_D3PGD_LPT;
if (priv->adsp_sram_pg_enable)
tmp32 &= ~ADSP_VDRTCTL0_D3SRAMPGD_LPT;
else
tmp32 |= ADSP_VDRTCTL0_D3SRAMPGD_LPT;
} else {
tmp32 |= ADSP_VDRTCTL0_D3PGD_LPT;
}
}
dm_pci_write_config32(dev, ADSP_PCI_VDRTCTL0, tmp32);
/* Set PSF Snoop to SA, RCBA+0x3350[10]=1b */
setbits_le32(RCB_REG(0x3350), 1 << 10);
/* Set DSP IOBP PMCTL 0x1e0=0x3f */
pch_iobp_write(ADSP_IOBP_PMCTL, ADSP_PMCTL_VALUE);
if (priv->sio_acpi_mode) {
/* Configure for ACPI mode */
log_info("ADSP: Enable ACPI Mode IRQ3\n");
/* Set interrupt de-assert/assert opcode override to IRQ3 */
pch_iobp_write(ADSP_IOBP_VDLDAT2, ADSP_IOBP_ACPI_IRQ3);
/* Enable IRQ3 in RCBA */
setbits_le32(RCB_REG(ACPIIRQEN), ADSP_ACPI_IRQEN);
/* Set ACPI Interrupt Enable Bit */
pch_iobp_update(ADSP_IOBP_PCICFGCTL, ~ADSP_PCICFGCTL_SPCBAD,
ADSP_PCICFGCTL_ACPIIE);
/* Put ADSP in D3hot */
clrbits_le32(bar1 + PCH_PCS, PCH_PCS_PS_D3HOT);
} else {
log_info("ADSP: Enable PCI Mode IRQ23\n");
/* Configure for PCI mode */
dm_pci_write_config32(dev, PCI_INTERRUPT_LINE, ADSP_PCI_IRQ);
/* Clear ACPI Interrupt Enable Bit */
pch_iobp_update(ADSP_IOBP_PCICFGCTL,
~(ADSP_PCICFGCTL_SPCBAD |
ADSP_PCICFGCTL_ACPIIE), 0);
}
return 0;
}
static int broadwell_adsp_ofdata_to_platdata(struct udevice *dev)
{
struct broadwell_adsp_priv *priv = dev_get_priv(dev);
priv->adsp_d3_pg_enable = dev_read_bool(dev, "intel,adsp-d3-pg-enable");
priv->adsp_sram_pg_enable = dev_read_bool(dev,
"intel,adsp-sram-pg-enable");
priv->sio_acpi_mode = dev_read_bool(dev, "intel,sio-acpi-mode");
return 0;
}
static const struct udevice_id broadwell_adsp_ids[] = {
{ .compatible = "intel,wildcatpoint-adsp", .data = WILDCAT_POINT },
{ }
};
U_BOOT_DRIVER(broadwell_adsp_drv) = {
.name = "adsp",
.id = UCLASS_SYSCON,
.ofdata_to_platdata = broadwell_adsp_ofdata_to_platdata,
.of_match = broadwell_adsp_ids,
.bind = dm_scan_fdt_dev,
.probe = broadwell_adsp_probe,
};
static struct pci_device_id broadwell_adsp_supported[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL,
PCI_DEVICE_ID_INTEL_WILDCATPOINT_ADSP) },
{ },
};
U_BOOT_PCI_DEVICE(broadwell_adsp_drv, broadwell_adsp_supported);
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