/* * This file is part of the coreboot project. * * Copyright 2015 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 <arch/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)); 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_SSID; 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; struct cbfsf file; struct region_device settings; void *settings_data; 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. */ if (cbfs_boot_locate(&file, cfg->settings_file, NULL)) return -1; cbfs_file_data(&settings, &file); settings_data = rdev_mmap_full(&settings); if (settings_data == NULL) return -1; if (nhlt_format_append_config(fmt, settings_data, region_device_sz(&settings))) { rdev_munmap(&settings, settings_data); return -1; } rdev_munmap(&settings, 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); } uintptr_t nhlt_serialize_oem_overrides(struct nhlt *nhlt, uintptr_t acpi_addr, const char *oem_id, const char *oem_table_id) { 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, 5); 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); 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; }