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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Google Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <cbmem.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <device/mmio.h>
#include <soc/adsp.h>
#include <soc/device_nvs.h>
#include <soc/iobp.h>
#include <soc/nvs.h>
#include <soc/pch.h>
#include <soc/ramstage.h>
#include <soc/rcba.h>
#include <soc/intel/broadwell/chip.h>
static void adsp_init(struct device *dev)
{
config_t *config = dev->chip_info;
struct resource *bar0, *bar1;
u32 tmp32;
/* Ensure memory and bus master are enabled */
tmp32 = pci_read_config32(dev, PCI_COMMAND);
tmp32 |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
pci_write_config32(dev, PCI_COMMAND, tmp32);
/* Find BAR0 and BAR1 */
bar0 = find_resource(dev, PCI_BASE_ADDRESS_0);
if (!bar0)
return;
bar1 = find_resource(dev, PCI_BASE_ADDRESS_1);
if (!bar1)
return;
/*
* 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
*/
tmp32 = pch_is_wpt() ? ADSP_SHIM_BASE_WPT : ADSP_SHIM_BASE_LPT;
write32(res2mmio(bar0, tmp32 + ADSP_SHIM_LTRC, 0),
ADSP_SHIM_LTRC_VALUE);
/* Program VDRTCTL2 D19:F0:A8[31:0] = 0x00000fff */
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 */
tmp32 = pci_read_config32(dev, ADSP_PCI_VDRTCTL0);
if (pch_is_wpt()) {
if (config->adsp_d3_pg_enable) {
tmp32 &= ~ADSP_VDRTCTL0_D3PGD_WPT;
if (config->adsp_sram_pg_enable)
tmp32 &= ~ADSP_VDRTCTL0_D3SRAMPGD_WPT;
else
tmp32 |= ADSP_VDRTCTL0_D3SRAMPGD_WPT;
} else {
tmp32 |= ADSP_VDRTCTL0_D3PGD_WPT;
}
} else {
if (config->adsp_d3_pg_enable) {
tmp32 &= ~ADSP_VDRTCTL0_D3PGD_LPT;
if (config->adsp_sram_pg_enable)
tmp32 &= ~ADSP_VDRTCTL0_D3SRAMPGD_LPT;
else
tmp32 |= ADSP_VDRTCTL0_D3SRAMPGD_LPT;
} else {
tmp32 |= ADSP_VDRTCTL0_D3PGD_LPT;
}
}
pci_write_config32(dev, ADSP_PCI_VDRTCTL0, tmp32);
/* Set PSF Snoop to SA, RCBA+0x3350[10]=1b */
RCBA32_OR(0x3350, (1 << 10));
/* Set DSP IOBP PMCTL 0x1e0=0x3f */
pch_iobp_write(ADSP_IOBP_PMCTL, ADSP_PMCTL_VALUE);
if (config->sio_acpi_mode) {
/* Configure for ACPI mode */
global_nvs_t *gnvs;
printk(BIOS_INFO, "ADSP: Enable ACPI Mode IRQ3\n");
/* Find ACPI NVS to update BARs */
gnvs = (global_nvs_t *)cbmem_find(CBMEM_ID_ACPI_GNVS);
if (!gnvs) {
printk(BIOS_ERR, "Unable to locate Global NVS\n");
return;
}
/* Save BAR0 and BAR1 to ACPI NVS */
gnvs->dev.bar0[SIO_NVS_ADSP] = (u32)bar0->base;
gnvs->dev.bar1[SIO_NVS_ADSP] = (u32)bar1->base;
gnvs->dev.enable[SIO_NVS_ADSP] = 1;
/* Set PCI Config Disable Bit */
pch_iobp_update(ADSP_IOBP_PCICFGCTL, ~0, ADSP_PCICFGCTL_PCICD);
/* Set interrupt de-assert/assert opcode override to IRQ3 */
pch_iobp_write(ADSP_IOBP_VDLDAT2, ADSP_IOBP_ACPI_IRQ3);
/* Enable IRQ3 in RCBA */
RCBA32_OR(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 */
tmp32 = read32(res2mmio(bar1, PCH_PCS, 0));
tmp32 |= PCH_PCS_PS_D3HOT;
write32(res2mmio(bar1, PCH_PCS, 0), tmp32);
} else {
printk(BIOS_INFO, "ADSP: Enable PCI Mode IRQ23\n");
/* Configure for PCI mode */
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);
}
}
static struct device_operations adsp_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = adsp_init,
.ops_pci = &broadwell_pci_ops,
};
static const unsigned short pci_device_ids[] = {
0x9c36, /* LynxPoint */
0x9cb6, /* WildcatPoint */
0
};
static const struct pci_driver pch_adsp __pci_driver = {
.ops = &adsp_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.devices = pci_device_ids,
};
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