| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <types.h> |
| #include <commonlib/helpers.h> |
| #include <console/console.h> |
| #include <acpi/acpi.h> |
| #include <acpi/acpigen.h> |
| #include <device/device.h> |
| #include <device/pci_def.h> |
| #include <device/pci_ops.h> |
| |
| #include "gm45.h" |
| |
| static unsigned long acpi_fill_dmar(unsigned long current) |
| { |
| const struct device *dev; |
| |
| dev = pcidev_on_root(3, 0); |
| int me_active = dev && dev->enabled; |
| |
| dev = pcidev_on_root(2, 0); |
| int igd_active = dev && dev->enabled; |
| |
| int stepping = pci_read_config8(pcidev_on_root(0, 0), |
| PCI_CLASS_REVISION); |
| |
| unsigned long tmp = current; |
| current += acpi_create_dmar_drhd(current, 0, 0, IOMMU_BASE1); |
| current += acpi_create_dmar_ds_pci(current, 0, 0x1b, 0); |
| acpi_dmar_drhd_fixup(tmp, current); |
| |
| if (stepping != STEPPING_B2 && igd_active) { |
| tmp = current; |
| current += acpi_create_dmar_drhd(current, 0, 0, IOMMU_BASE2); |
| current += acpi_create_dmar_ds_pci(current, 0, 0x2, 0); |
| current += acpi_create_dmar_ds_pci(current, 0, 0x2, 1); |
| acpi_dmar_drhd_fixup(tmp, current); |
| } |
| |
| if (me_active) { |
| tmp = current; |
| current += acpi_create_dmar_drhd(current, 0, 0, IOMMU_BASE3); |
| current += acpi_create_dmar_ds_pci(current, 0, 0x3, 0); |
| current += acpi_create_dmar_ds_pci(current, 0, 0x3, 1); |
| current += acpi_create_dmar_ds_pci(current, 0, 0x3, 2); |
| current += acpi_create_dmar_ds_pci(current, 0, 0x3, 3); |
| acpi_dmar_drhd_fixup(tmp, current); |
| } |
| |
| current += acpi_create_dmar_drhd(current, DRHD_INCLUDE_PCI_ALL, 0, IOMMU_BASE4); |
| |
| /* TODO: reserve GTT for 0.2.0 and 0.2.1? */ |
| return current; |
| } |
| |
| unsigned long northbridge_write_acpi_tables(const struct device *device, |
| unsigned long start, |
| struct acpi_rsdp *rsdp) |
| { |
| unsigned long current; |
| acpi_dmar_t *dmar; |
| |
| current = start; |
| |
| printk(BIOS_DEBUG, "ACPI: * DMAR\n"); |
| dmar = (acpi_dmar_t *)current; |
| acpi_create_dmar(dmar, 0, acpi_fill_dmar); |
| current += dmar->header.length; |
| current = acpi_align_current(current); |
| acpi_add_table(rsdp, dmar); |
| |
| current = acpi_align_current(current); |
| |
| printk(BIOS_DEBUG, "current = %lx\n", current); |
| |
| return current; |
| } |