diff options
Diffstat (limited to 'src/acpi/acpi_dmar.c')
| -rw-r--r-- | src/acpi/acpi_dmar.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/src/acpi/acpi_dmar.c b/src/acpi/acpi_dmar.c new file mode 100644 index 0000000000..83a876c287 --- /dev/null +++ b/src/acpi/acpi_dmar.c @@ -0,0 +1,196 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <acpi/acpi.h> +#include <arch/ioapic.h> +#include <cpu/cpu.h> +#include <version.h> + +void acpi_create_dmar(acpi_dmar_t *dmar, enum dmar_flags flags, + unsigned long (*acpi_fill_dmar)(unsigned long)) +{ + acpi_header_t *header = &(dmar->header); + unsigned long current = (unsigned long)dmar + sizeof(acpi_dmar_t); + + memset((void *)dmar, 0, sizeof(acpi_dmar_t)); + + if (!header) + return; + + /* Fill out header fields. */ + memcpy(header->signature, "DMAR", 4); + memcpy(header->oem_id, OEM_ID, 6); + memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8); + memcpy(header->asl_compiler_id, ASLC, 4); + + header->asl_compiler_revision = asl_revision; + header->length = sizeof(acpi_dmar_t); + header->revision = get_acpi_table_revision(DMAR); + + dmar->host_address_width = cpu_phys_address_size() - 1; + dmar->flags = flags; + + current = acpi_fill_dmar(current); + + /* (Re)calculate length and checksum. */ + header->length = current - (unsigned long)dmar; + header->checksum = acpi_checksum((void *)dmar, header->length); +} + +unsigned long acpi_create_dmar_drhd(unsigned long current, u8 flags, + u16 segment, u64 bar) +{ + dmar_entry_t *drhd = (dmar_entry_t *)current; + memset(drhd, 0, sizeof(*drhd)); + drhd->type = DMAR_DRHD; + drhd->length = sizeof(*drhd); /* will be fixed up later */ + drhd->flags = flags; + drhd->segment = segment; + drhd->bar = bar; + + return drhd->length; +} + +unsigned long acpi_create_dmar_rmrr(unsigned long current, u16 segment, + u64 bar, u64 limit) +{ + dmar_rmrr_entry_t *rmrr = (dmar_rmrr_entry_t *)current; + memset(rmrr, 0, sizeof(*rmrr)); + rmrr->type = DMAR_RMRR; + rmrr->length = sizeof(*rmrr); /* will be fixed up later */ + rmrr->segment = segment; + rmrr->bar = bar; + rmrr->limit = limit; + + return rmrr->length; +} + +unsigned long acpi_create_dmar_atsr(unsigned long current, u8 flags, + u16 segment) +{ + dmar_atsr_entry_t *atsr = (dmar_atsr_entry_t *)current; + memset(atsr, 0, sizeof(*atsr)); + atsr->type = DMAR_ATSR; + atsr->length = sizeof(*atsr); /* will be fixed up later */ + atsr->flags = flags; + atsr->segment = segment; + + return atsr->length; +} + +unsigned long acpi_create_dmar_rhsa(unsigned long current, u64 base_addr, + u32 proximity_domain) +{ + dmar_rhsa_entry_t *rhsa = (dmar_rhsa_entry_t *)current; + memset(rhsa, 0, sizeof(*rhsa)); + rhsa->type = DMAR_RHSA; + rhsa->length = sizeof(*rhsa); + rhsa->base_address = base_addr; + rhsa->proximity_domain = proximity_domain; + + return rhsa->length; +} + +unsigned long acpi_create_dmar_andd(unsigned long current, u8 device_number, + const char *device_name) +{ + dmar_andd_entry_t *andd = (dmar_andd_entry_t *)current; + int andd_len = sizeof(dmar_andd_entry_t) + strlen(device_name) + 1; + memset(andd, 0, andd_len); + andd->type = DMAR_ANDD; + andd->length = andd_len; + andd->device_number = device_number; + memcpy(&andd->device_name, device_name, strlen(device_name)); + + return andd->length; +} + +unsigned long acpi_create_dmar_satc(unsigned long current, u8 flags, u16 segment) +{ + dmar_satc_entry_t *satc = (dmar_satc_entry_t *)current; + int satc_len = sizeof(dmar_satc_entry_t); + memset(satc, 0, satc_len); + satc->type = DMAR_SATC; + satc->length = satc_len; + satc->flags = flags; + satc->segment_number = segment; + + return satc->length; +} + +void acpi_dmar_drhd_fixup(unsigned long base, unsigned long current) +{ + dmar_entry_t *drhd = (dmar_entry_t *)base; + drhd->length = current - base; +} + +void acpi_dmar_rmrr_fixup(unsigned long base, unsigned long current) +{ + dmar_rmrr_entry_t *rmrr = (dmar_rmrr_entry_t *)base; + rmrr->length = current - base; +} + +void acpi_dmar_atsr_fixup(unsigned long base, unsigned long current) +{ + dmar_atsr_entry_t *atsr = (dmar_atsr_entry_t *)base; + atsr->length = current - base; +} + +void acpi_dmar_satc_fixup(unsigned long base, unsigned long current) +{ + dmar_satc_entry_t *satc = (dmar_satc_entry_t *)base; + satc->length = current - base; +} + +static unsigned long acpi_create_dmar_ds(unsigned long current, + enum dev_scope_type type, u8 enumeration_id, u8 bus, u8 dev, u8 fn) +{ + /* we don't support longer paths yet */ + const size_t dev_scope_length = sizeof(dev_scope_t) + 2; + + dev_scope_t *ds = (dev_scope_t *)current; + memset(ds, 0, dev_scope_length); + ds->type = type; + ds->length = dev_scope_length; + ds->enumeration = enumeration_id; + ds->start_bus = bus; + ds->path[0].dev = dev; + ds->path[0].fn = fn; + + return ds->length; +} + +unsigned long acpi_create_dmar_ds_pci_br(unsigned long current, u8 bus, + u8 dev, u8 fn) +{ + return acpi_create_dmar_ds(current, + SCOPE_PCI_SUB, 0, bus, dev, fn); +} + +unsigned long acpi_create_dmar_ds_pci(unsigned long current, u8 bus, + u8 dev, u8 fn) +{ + return acpi_create_dmar_ds(current, + SCOPE_PCI_ENDPOINT, 0, bus, dev, fn); +} + +unsigned long acpi_create_dmar_ds_ioapic(unsigned long current, + u8 enumeration_id, u8 bus, u8 dev, u8 fn) +{ + return acpi_create_dmar_ds(current, + SCOPE_IOAPIC, enumeration_id, bus, dev, fn); +} + +unsigned long acpi_create_dmar_ds_ioapic_from_hw(unsigned long current, + u32 addr, u8 bus, u8 dev, u8 fn) +{ + u8 enumeration_id = get_ioapic_id((void *)(uintptr_t)addr); + return acpi_create_dmar_ds(current, + SCOPE_IOAPIC, enumeration_id, bus, dev, fn); +} + +unsigned long acpi_create_dmar_ds_msi_hpet(unsigned long current, + u8 enumeration_id, u8 bus, u8 dev, u8 fn) +{ + return acpi_create_dmar_ds(current, + SCOPE_MSI_HPET, enumeration_id, bus, dev, fn); +} |