diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/acpi/Makefile.mk | 1 | ||||
| -rw-r--r-- | src/acpi/acpi_iort.c | 156 | ||||
| -rw-r--r-- | src/include/acpi/acpi_iort.h | 22 |
3 files changed, 179 insertions, 0 deletions
diff --git a/src/acpi/Makefile.mk b/src/acpi/Makefile.mk index e9d5cb0fda..46801d41e9 100644 --- a/src/acpi/Makefile.mk +++ b/src/acpi/Makefile.mk @@ -10,6 +10,7 @@ ramstage-y += acpi_hpet.c ramstage-y += acpigen_pci_root_resource_producer.c endif ramstage-$(CONFIG_ACPI_PPTT) += acpi_pptt.c +ramstage-$(CONFIG_ACPI_IORT) += acpi_iort.c ramstage-y += acpigen.c ramstage-y += acpigen_dptf.c ramstage-y += acpigen_dsm.c diff --git a/src/acpi/acpi_iort.c b/src/acpi/acpi_iort.c new file mode 100644 index 0000000000..5e2263df34 --- /dev/null +++ b/src/acpi/acpi_iort.c @@ -0,0 +1,156 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <acpi/acpi.h> +#include <acpi/acpi_iort.h> +#include <assert.h> + +unsigned long acpi_iort_its_entry(unsigned long current, acpi_iort_t *iort, + acpi_iort_node_t **its_out, u32 its_count, u32 *identifiers) +{ + acpi_iort_its_group_t *its_node_data; + acpi_iort_node_t *its = (acpi_iort_node_t *)current; + const unsigned long its_start = current; + + ASSERT(its_out); + current += sizeof(*its) + sizeof(*its_node_data); + memset(its, 0, current - its_start); + + its->type = ACPI_IORT_NODE_ITS_GROUP; + its->revision = 1; + its->identifier = iort->node_count++; + + its_node_data = (acpi_iort_its_group_t *)its->node_data; + its_node_data->its_count = its_count; + + for (int i = 0; i < its_count; i++) + its_node_data->identifiers[i] = identifiers[i]; + + current += its_node_data->its_count * sizeof(its_node_data->identifiers[0]); + its->length = current - its_start; + + *its_out = its; + + return current; +} + +unsigned long acpi_iort_smmuv3_entry(unsigned long current, acpi_iort_t *iort, + acpi_iort_node_t **smmu_v3_out, u64 base, u32 flags) +{ + acpi_iort_smmu_v3_t *smmu_v3_node_data; + acpi_iort_node_t *smmu_v3 = (acpi_iort_node_t *)current; + const unsigned long smmu_v3_start = current; + + ASSERT(smmu_v3_out); + current += sizeof(*smmu_v3) + sizeof(*smmu_v3_node_data); + memset(smmu_v3, 0, current - smmu_v3_start); + + smmu_v3->type = ACPI_IORT_NODE_SMMU_V3; + smmu_v3->revision = 0x5; + smmu_v3->identifier = iort->node_count++; // Unique identifier. + smmu_v3->mapping_offset = current - smmu_v3_start; + + /* length is further updated by id map entries */ + smmu_v3->length = smmu_v3->mapping_offset; + + smmu_v3_node_data = (acpi_iort_smmu_v3_t *)smmu_v3->node_data; + smmu_v3_node_data->base_address = base; + smmu_v3_node_data->flags = flags; + + *smmu_v3_out = smmu_v3; + + return current; +} + +unsigned long acpi_iort_nc_entry(unsigned long current, acpi_iort_t *iort, + acpi_iort_node_t **nc_out, u32 node_flags, u64 memory_properties, + u32 memory_address_limit, char *device_name) +{ + acpi_iort_named_component_t *nc_node_data; + acpi_iort_node_t *nc = (acpi_iort_node_t *)current; + const unsigned long nc_start = current; + const u16 device_name_len = strlen(device_name); + + ASSERT(nc_out); + current += sizeof(*nc) + sizeof(*nc_node_data); + memset(nc, 0, current - nc_start); + + nc->type = ACPI_IORT_NODE_NAMED_COMPONENT; + nc->revision = 0x4; + nc->identifier = iort->node_count++; // Unique identifier. + + nc_node_data = (acpi_iort_named_component_t *)nc->node_data; + nc_node_data->node_flags = node_flags; + nc_node_data->memory_properties = memory_properties; + nc_node_data->memory_address_limit = memory_address_limit; + + /* Path of namespace object */ + memset(nc_node_data->device_name, 0, device_name_len + 5); + strncpy(nc_node_data->device_name, device_name, device_name_len + 1); + + current += device_name_len + 2; + current = ALIGN_UP(current, 4); + + nc->mapping_offset = current - nc_start; + + /* length is further updated by id map entries */ + nc->length = nc->mapping_offset; + + *nc_out = nc; + + return current; +} + +unsigned long acpi_iort_rc_entry(unsigned long current, acpi_iort_t *node, + acpi_iort_node_t **rc_out, u64 memory_properties, + u32 ats_attribute, u32 pci_segment_number, + u8 memory_address_limit, u16 pasid_capabilities) +{ + acpi_iort_root_complex_t *rc_node_data; + acpi_iort_node_t *rc = (acpi_iort_node_t *)current; + const unsigned long rc_start = current; + + ASSERT(rc_out); + current += sizeof(*rc) + sizeof(*rc_node_data); + memset(rc, 0, current - rc_start); + + rc->type = ACPI_IORT_NODE_PCI_ROOT_COMPLEX; + rc->revision = 0x4; + rc->identifier = node->node_count++; // Unique identifier. + rc->mapping_offset = current - rc_start; + + /* length is further updated by id map entries */ + rc->length = rc->mapping_offset; + + rc_node_data = (acpi_iort_root_complex_t *)rc->node_data; + rc_node_data->memory_properties = memory_properties; /* Memory access properties */ + rc_node_data->ats_attribute = ats_attribute; + rc_node_data->pci_segment_number = pci_segment_number; + rc_node_data->memory_address_limit = memory_address_limit; /* Memory address size limit */ + rc_node_data->pasid_capabilities = pasid_capabilities; /* PASID Capabilities */ + + *rc_out = rc; + + return current; +} + +unsigned long acpi_iort_id_map_entry(unsigned long current, acpi_iort_node_t *node, u32 input_base, + u32 id_count, u32 output_base, u32 output_reference, u32 flags) +{ + acpi_iort_id_mapping_t *id_map = (acpi_iort_id_mapping_t *)current; + + ASSERT(node); + memset(id_map, 0, sizeof(acpi_iort_id_mapping_t)); + + current += sizeof(acpi_iort_id_mapping_t); + + node->mapping_count++; + node->length += current - (unsigned long)id_map; + + id_map->input_base = input_base; + id_map->id_count = id_count - 1; + id_map->output_base = output_base; + id_map->output_reference = output_reference; + id_map->flags = flags; + + return current; +} diff --git a/src/include/acpi/acpi_iort.h b/src/include/acpi/acpi_iort.h index 74a520d6a6..125b3a1d5d 100644 --- a/src/include/acpi/acpi_iort.h +++ b/src/include/acpi/acpi_iort.h @@ -110,4 +110,26 @@ typedef struct acpi_iort_root_complex { unsigned long acpi_soc_fill_iort(acpi_iort_t *iort, unsigned long current); +/* ITS Group */ +unsigned long acpi_iort_its_entry(unsigned long current, acpi_iort_t *iort, acpi_iort_node_t **its, + u32 its_count, u32 *identifiers); + +/* SMMUv3 */ +unsigned long acpi_iort_smmuv3_entry(unsigned long current, acpi_iort_t *iort, + acpi_iort_node_t **smmu_v3, u64 base, u32 flags); + +/* ID mapping */ +unsigned long acpi_iort_id_map_entry(unsigned long current, acpi_iort_node_t *node, u32 input_base, + u32 id_count, u32 output_base, u32 output_reference, + u32 flags); + +/* Named Component */ +unsigned long acpi_iort_nc_entry(unsigned long current, acpi_iort_t *iort, acpi_iort_node_t **nc, + u32 node_flags, u64 memory_properties, u32 memory_address_limit, + char *device_name); +/* Root Complex */ +unsigned long acpi_iort_rc_entry(unsigned long current, acpi_iort_t *node, acpi_iort_node_t **rc, + u64 memory_properties, u32 ats_attribute, u32 pci_segment_number, + u8 memory_address_limit, u16 pasid_capabilities); + #endif |