| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <acpi/acpi.h> |
| #include <cbfs.h> |
| #include <commonlib/endian.h> |
| #include <console/console.h> |
| #include <nhlt.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #define NHLT_RID 1 |
| #define NHLT_SSID 1 |
| #define WAVEFORMAT_TAG 0xfffe |
| #define DEFAULT_VIRTUAL_BUS_ID 0 |
| |
| static const struct sub_format pcm_subformat = { |
| .data1 = 0x00000001, |
| .data2 = 0x0000, |
| .data3 = 0x0010, |
| .data4 = { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }, |
| }; |
| |
| struct nhlt *nhlt_init(void) |
| { |
| struct nhlt *nhlt; |
| |
| nhlt = malloc(sizeof(*nhlt)); |
| |
| if (nhlt == NULL) |
| return NULL; |
| |
| memset(nhlt, 0, sizeof(*nhlt)); |
| nhlt->subsystem_id = NHLT_SSID; |
| |
| return nhlt; |
| } |
| |
| struct nhlt_endpoint *nhlt_add_endpoint(struct nhlt *nhlt, int link_type, |
| int device_type, int dir, |
| uint16_t vid, uint16_t did) |
| { |
| struct nhlt_endpoint *endp; |
| |
| if (link_type < NHLT_LINK_HDA || link_type >= NHLT_MAX_LINK_TYPES) |
| return NULL; |
| |
| if (nhlt->num_endpoints >= MAX_ENDPOINTS) |
| return NULL; |
| |
| endp = &nhlt->endpoints[nhlt->num_endpoints]; |
| |
| endp->link_type = link_type; |
| endp->instance_id = nhlt->current_instance_id[link_type]; |
| endp->vendor_id = vid; |
| endp->device_id = did; |
| endp->revision_id = NHLT_RID; |
| endp->subsystem_id = nhlt->subsystem_id; |
| endp->device_type = device_type; |
| endp->direction = dir; |
| endp->virtual_bus_id = DEFAULT_VIRTUAL_BUS_ID; |
| |
| nhlt->num_endpoints++; |
| |
| return endp; |
| } |
| |
| static int append_specific_config(struct nhlt_specific_config *spec_cfg, |
| const void *config, size_t config_sz) |
| { |
| size_t new_sz; |
| void *new_cfg; |
| |
| if (config == NULL || config_sz == 0) |
| return 0; |
| |
| new_sz = spec_cfg->size + config_sz; |
| |
| new_cfg = malloc(new_sz); |
| |
| if (new_cfg == NULL) |
| return -1; |
| |
| /* Append new config. */ |
| memcpy(new_cfg, spec_cfg->capabilities, spec_cfg->size); |
| memcpy(new_cfg + spec_cfg->size, config, config_sz); |
| |
| free(spec_cfg->capabilities); |
| |
| /* Update with new config data. */ |
| spec_cfg->size = new_sz; |
| spec_cfg->capabilities = new_cfg; |
| |
| return 0; |
| } |
| |
| int nhlt_endpoint_append_config(struct nhlt_endpoint *endp, const void *config, |
| size_t config_sz) |
| { |
| return append_specific_config(&endp->config, config, config_sz); |
| } |
| |
| struct nhlt_format *nhlt_add_format(struct nhlt_endpoint *endp, |
| int num_channels, |
| int sample_freq_khz, |
| int container_bits_per_sample, |
| int valid_bits_per_sample, |
| uint32_t speaker_mask) |
| { |
| struct nhlt_format *fmt; |
| struct nhlt_waveform *wave; |
| |
| if (endp->num_formats >= MAX_FORMATS) |
| return NULL; |
| |
| fmt = &endp->formats[endp->num_formats]; |
| wave = &fmt->waveform; |
| |
| wave->tag = WAVEFORMAT_TAG; |
| wave->num_channels = num_channels; |
| wave->samples_per_second = sample_freq_khz * KHz; |
| wave->bits_per_sample = container_bits_per_sample; |
| wave->extra_size = sizeof(wave->valid_bits_per_sample); |
| wave->extra_size += sizeof(wave->channel_mask); |
| wave->extra_size += sizeof(wave->sub_format); |
| wave->valid_bits_per_sample = valid_bits_per_sample; |
| wave->channel_mask = speaker_mask; |
| memcpy(&wave->sub_format, &pcm_subformat, sizeof(wave->sub_format)); |
| |
| /* Calculate the dervied fields. */ |
| wave->block_align = wave->num_channels * wave->bits_per_sample / 8; |
| wave->bytes_per_second = wave->block_align * wave->samples_per_second; |
| |
| endp->num_formats++; |
| |
| return fmt; |
| } |
| |
| int nhlt_format_append_config(struct nhlt_format *fmt, const void *config, |
| size_t config_sz) |
| { |
| return append_specific_config(&fmt->config, config, config_sz); |
| } |
| |
| int nhlt_endpoint_add_formats(struct nhlt_endpoint *endp, |
| const struct nhlt_format_config *formats, |
| size_t num_formats) |
| { |
| size_t i; |
| |
| for (i = 0; i < num_formats; i++) { |
| struct nhlt_format *fmt; |
| void *settings_data; |
| size_t size; |
| const struct nhlt_format_config *cfg = &formats[i]; |
| |
| fmt = nhlt_add_format(endp, cfg->num_channels, |
| cfg->sample_freq_khz, |
| cfg->container_bits_per_sample, |
| cfg->valid_bits_per_sample, |
| cfg->speaker_mask); |
| |
| if (fmt == NULL) |
| return -1; |
| |
| if (cfg->settings_file == NULL) |
| continue; |
| |
| /* Find the settings file in CBFS and place it in format. */ |
| settings_data = cbfs_map(cfg->settings_file, &size); |
| if (!settings_data) |
| return -1; |
| |
| if (nhlt_format_append_config(fmt, settings_data, size)) { |
| cbfs_unmap(settings_data); |
| return -1; |
| } |
| |
| cbfs_unmap(settings_data); |
| } |
| |
| return 0; |
| } |
| |
| void nhlt_next_instance(struct nhlt *nhlt, int link_type) |
| { |
| if (link_type < NHLT_LINK_HDA || link_type >= NHLT_MAX_LINK_TYPES) |
| return; |
| |
| nhlt->current_instance_id[link_type]++; |
| } |
| |
| static size_t calc_specific_config_size(struct nhlt_specific_config *cfg) |
| { |
| return sizeof(cfg->size) + cfg->size; |
| } |
| |
| static size_t calc_format_size(struct nhlt_format *fmt) |
| { |
| size_t sz = 0; |
| |
| /* Wave format first. */ |
| sz += sizeof(fmt->waveform.tag); |
| sz += sizeof(fmt->waveform.num_channels); |
| sz += sizeof(fmt->waveform.samples_per_second); |
| sz += sizeof(fmt->waveform.bytes_per_second); |
| sz += sizeof(fmt->waveform.block_align); |
| sz += sizeof(fmt->waveform.bits_per_sample); |
| sz += sizeof(fmt->waveform.extra_size); |
| sz += sizeof(fmt->waveform.valid_bits_per_sample); |
| sz += sizeof(fmt->waveform.channel_mask); |
| sz += sizeof(fmt->waveform.sub_format); |
| |
| sz += calc_specific_config_size(&fmt->config); |
| |
| return sz; |
| } |
| |
| static size_t calc_endpoint_size(struct nhlt_endpoint *endp) |
| { |
| int i; |
| size_t sz = 0; |
| |
| sz += sizeof(endp->length) + sizeof(endp->link_type); |
| sz += sizeof(endp->instance_id) + sizeof(endp->vendor_id); |
| sz += sizeof(endp->device_id) + sizeof(endp->revision_id); |
| sz += sizeof(endp->subsystem_id) + sizeof(endp->device_type); |
| sz += sizeof(endp->direction) + sizeof(endp->virtual_bus_id); |
| sz += calc_specific_config_size(&endp->config); |
| sz += sizeof(endp->num_formats); |
| |
| for (i = 0; i < endp->num_formats; i++) |
| sz += calc_format_size(&endp->formats[i]); |
| |
| /* Adjust endpoint length to reflect current configuration. */ |
| endp->length = sz; |
| |
| return sz; |
| } |
| |
| static size_t calc_endpoints_size(struct nhlt *nhlt) |
| { |
| int i; |
| size_t sz = 0; |
| |
| for (i = 0; i < nhlt->num_endpoints; i++) |
| sz += calc_endpoint_size(&nhlt->endpoints[i]); |
| |
| return sz; |
| } |
| |
| static size_t calc_size(struct nhlt *nhlt) |
| { |
| return sizeof(nhlt->num_endpoints) + calc_endpoints_size(nhlt); |
| } |
| |
| size_t nhlt_current_size(struct nhlt *nhlt) |
| { |
| return calc_size(nhlt) + sizeof(acpi_header_t); |
| } |
| |
| static void nhlt_free_resources(struct nhlt *nhlt) |
| { |
| int i; |
| int j; |
| |
| /* Free all specific configs. */ |
| for (i = 0; i < nhlt->num_endpoints; i++) { |
| struct nhlt_endpoint *endp = &nhlt->endpoints[i]; |
| |
| free(endp->config.capabilities); |
| for (j = 0; j < endp->num_formats; j++) { |
| struct nhlt_format *fmt = &endp->formats[j]; |
| |
| free(fmt->config.capabilities); |
| } |
| } |
| |
| /* Free nhlt object proper. */ |
| free(nhlt); |
| } |
| |
| struct cursor { |
| uint8_t *buf; |
| }; |
| |
| static void ser8(struct cursor *cur, uint8_t val) |
| { |
| write_le8(cur->buf, val); |
| cur->buf += sizeof(val); |
| } |
| |
| static void ser16(struct cursor *cur, uint16_t val) |
| { |
| write_le16(cur->buf, val); |
| cur->buf += sizeof(val); |
| } |
| |
| static void ser32(struct cursor *cur, uint32_t val) |
| { |
| write_le32(cur->buf, val); |
| cur->buf += sizeof(val); |
| } |
| |
| static void serblob(struct cursor *cur, void *from, size_t sz) |
| { |
| memcpy(cur->buf, from, sz); |
| cur->buf += sz; |
| } |
| |
| static void serialize_specific_config(struct nhlt_specific_config *cfg, |
| struct cursor *cur) |
| { |
| ser32(cur, cfg->size); |
| serblob(cur, cfg->capabilities, cfg->size); |
| } |
| |
| static void serialize_waveform(struct nhlt_waveform *wave, struct cursor *cur) |
| { |
| ser16(cur, wave->tag); |
| ser16(cur, wave->num_channels); |
| ser32(cur, wave->samples_per_second); |
| ser32(cur, wave->bytes_per_second); |
| ser16(cur, wave->block_align); |
| ser16(cur, wave->bits_per_sample); |
| ser16(cur, wave->extra_size); |
| ser16(cur, wave->valid_bits_per_sample); |
| ser32(cur, wave->channel_mask); |
| ser32(cur, wave->sub_format.data1); |
| ser16(cur, wave->sub_format.data2); |
| ser16(cur, wave->sub_format.data3); |
| serblob(cur, wave->sub_format.data4, sizeof(wave->sub_format.data4)); |
| } |
| |
| static void serialize_format(struct nhlt_format *fmt, struct cursor *cur) |
| { |
| serialize_waveform(&fmt->waveform, cur); |
| serialize_specific_config(&fmt->config, cur); |
| } |
| |
| static void serialize_endpoint(struct nhlt_endpoint *endp, struct cursor *cur) |
| { |
| int i; |
| |
| ser32(cur, endp->length); |
| ser8(cur, endp->link_type); |
| ser8(cur, endp->instance_id); |
| ser16(cur, endp->vendor_id); |
| ser16(cur, endp->device_id); |
| ser16(cur, endp->revision_id); |
| ser32(cur, endp->subsystem_id); |
| ser8(cur, endp->device_type); |
| ser8(cur, endp->direction); |
| ser8(cur, endp->virtual_bus_id); |
| serialize_specific_config(&endp->config, cur); |
| ser8(cur, endp->num_formats); |
| |
| for (i = 0; i < endp->num_formats; i++) |
| serialize_format(&endp->formats[i], cur); |
| } |
| |
| static void nhlt_serialize_endpoints(struct nhlt *nhlt, struct cursor *cur) |
| { |
| int i; |
| |
| ser8(cur, nhlt->num_endpoints); |
| |
| for (i = 0; i < nhlt->num_endpoints; i++) |
| serialize_endpoint(&nhlt->endpoints[i], cur); |
| } |
| |
| uintptr_t nhlt_serialize(struct nhlt *nhlt, uintptr_t acpi_addr) |
| { |
| return nhlt_serialize_oem_overrides(nhlt, acpi_addr, NULL, NULL, 0); |
| } |
| |
| uintptr_t nhlt_serialize_oem_overrides(struct nhlt *nhlt, |
| uintptr_t acpi_addr, const char *oem_id, const char *oem_table_id, |
| uint32_t oem_revision) |
| { |
| struct cursor cur; |
| acpi_header_t *header; |
| size_t sz; |
| size_t oem_id_len; |
| size_t oem_table_id_len; |
| |
| printk(BIOS_DEBUG, "ACPI: * NHLT\n"); |
| |
| sz = nhlt_current_size(nhlt); |
| |
| /* Create header */ |
| header = (void *)acpi_addr; |
| memset(header, 0, sizeof(acpi_header_t)); |
| memcpy(header->signature, "NHLT", 4); |
| write_le32(&header->length, sz); |
| write_le8(&header->revision, get_acpi_table_revision(NHLT)); |
| |
| if (oem_id == NULL) |
| oem_id = OEM_ID; |
| |
| if (oem_table_id == NULL) |
| oem_table_id = ACPI_TABLE_CREATOR; |
| |
| oem_id_len = MIN(strlen(oem_id), 6); |
| oem_table_id_len = MIN(strlen(oem_table_id), 8); |
| |
| memcpy(header->oem_id, oem_id, oem_id_len); |
| memcpy(header->oem_table_id, oem_table_id, oem_table_id_len); |
| write_le32(&header->oem_revision, oem_revision); |
| memcpy(header->asl_compiler_id, ASLC, 4); |
| |
| cur.buf = (void *)(acpi_addr + sizeof(acpi_header_t)); |
| nhlt_serialize_endpoints(nhlt, &cur); |
| |
| write_le8(&header->checksum, acpi_checksum((void *)header, sz)); |
| |
| nhlt_free_resources(nhlt); |
| |
| acpi_addr += sz; |
| acpi_addr = ALIGN_UP(acpi_addr, 16); |
| |
| return acpi_addr; |
| } |
| |
| static int _nhlt_add_single_endpoint(struct nhlt *nhlt, int virtual_bus_id, |
| const struct nhlt_endp_descriptor *epd) |
| { |
| struct nhlt_endpoint *endp; |
| |
| endp = nhlt_add_endpoint(nhlt, epd->link, epd->device, epd->direction, |
| epd->vid, epd->did); |
| |
| if (endp == NULL) |
| return -1; |
| |
| endp->virtual_bus_id = virtual_bus_id; |
| |
| if (nhlt_endpoint_append_config(endp, epd->cfg, epd->cfg_size)) |
| return -1; |
| |
| if (nhlt_endpoint_add_formats(endp, epd->formats, epd->num_formats)) |
| return -1; |
| |
| return 0; |
| } |
| |
| static int _nhlt_add_endpoints(struct nhlt *nhlt, int virtual_bus_id, |
| const struct nhlt_endp_descriptor *epds, |
| size_t num_epds) |
| { |
| size_t i; |
| |
| for (i = 0; i < num_epds; i++) |
| if (_nhlt_add_single_endpoint(nhlt, virtual_bus_id, &epds[i])) |
| return -1; |
| |
| return 0; |
| } |
| |
| int nhlt_add_endpoints(struct nhlt *nhlt, |
| const struct nhlt_endp_descriptor *epds, |
| size_t num_epds) |
| { |
| int ret; |
| ret = _nhlt_add_endpoints(nhlt, DEFAULT_VIRTUAL_BUS_ID, epds, num_epds); |
| return ret; |
| } |
| |
| int nhlt_add_ssp_endpoints(struct nhlt *nhlt, int virtual_bus_id, |
| const struct nhlt_endp_descriptor *epds, size_t num_epds) |
| { |
| int ret; |
| |
| ret = _nhlt_add_endpoints(nhlt, virtual_bus_id, epds, num_epds); |
| |
| if (!ret) |
| nhlt_next_instance(nhlt, NHLT_LINK_SSP); |
| |
| return ret; |
| } |