123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482 |
- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright 2020 Google LLC
- *
- * Modified from coreboot nhlt.c
- */
- #define LOG_CATEGORY LOGC_ACPI
- #include <common.h>
- #include <binman.h>
- #include <dm.h>
- #include <log.h>
- #include <malloc.h>
- #include <tables_csum.h>
- #include <acpi/acpi_table.h>
- #include <asm/acpi_nhlt.h>
- #include <asm/unaligned.h>
- #include <dm/acpi.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)
- 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,
- u16 vid, u16 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;
- new_sz = spec_cfg->size + config_sz;
- new_cfg = malloc(new_sz);
- if (!new_cfg)
- return -ENOMEM;
- /* 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 * 1000;
- 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)
- {
- ofnode node;
- size_t i;
- node = binman_section_find_node("private-files");
- for (i = 0; i < num_formats; i++) {
- const struct nhlt_format_config *cfg = &formats[i];
- struct nhlt_format *fmt;
- void *data;
- int size;
- int ret;
- 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)
- return -ENOSPC;
- if (!cfg->settings_file)
- continue;
- ret = binman_entry_map(node, cfg->settings_file, &data, &size);
- if (ret) {
- log_warning("Failed to find settings file %s\n",
- cfg->settings_file);
- return log_msg_ret("settings", ret);
- }
- ret = nhlt_format_append_config(fmt, data, size);
- if (ret)
- return log_msg_ret("append", ret);
- }
- 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)
- {
- size_t sz = 0;
- int i;
- 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(struct acpi_table_header);
- }
- static void nhlt_free_resources(struct nhlt *nhlt)
- {
- int i, 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 {
- u8 *buf;
- };
- static void ser8(struct cursor *cur, uint val)
- {
- *cur->buf = val;
- cur->buf += sizeof(val);
- }
- static void ser16(struct cursor *cur, uint val)
- {
- put_unaligned_le16(val, cur->buf);
- cur->buf += sizeof(val);
- }
- static void ser32(struct cursor *cur, uint val)
- {
- put_unaligned_le32(val, cur->buf);
- 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 serialise_specific_config(struct nhlt_specific_config *cfg,
- struct cursor *cur)
- {
- ser32(cur, cfg->size);
- serblob(cur, cfg->capabilities, cfg->size);
- }
- static void serialise_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 serialise_format(struct nhlt_format *fmt, struct cursor *cur)
- {
- serialise_waveform(&fmt->waveform, cur);
- serialise_specific_config(&fmt->config, cur);
- }
- static void serialise_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);
- serialise_specific_config(&endp->config, cur);
- ser8(cur, endp->num_formats);
- for (i = 0; i < endp->num_formats; i++)
- serialise_format(&endp->formats[i], cur);
- }
- static void nhlt_serialise_endpoints(struct nhlt *nhlt, struct cursor *cur)
- {
- int i;
- ser8(cur, nhlt->num_endpoints);
- for (i = 0; i < nhlt->num_endpoints; i++)
- serialise_endpoint(&nhlt->endpoints[i], cur);
- }
- int nhlt_serialise_oem_overrides(struct acpi_ctx *ctx, struct nhlt *nhlt,
- const char *oem_id, const char *oem_table_id,
- uint32_t oem_revision)
- {
- struct cursor cur;
- struct acpi_table_header *header;
- size_t sz;
- size_t oem_id_len;
- size_t oem_table_id_len;
- int ret;
- log_info("ACPI: * NHLT\n");
- sz = nhlt_current_size(nhlt);
- /* Create header */
- header = (void *)ctx->current;
- memset(header, '\0', sizeof(struct acpi_table_header));
- acpi_fill_header(header, "NHLT");
- header->length = sz;
- header->revision = acpi_get_table_revision(ACPITAB_NHLT);
- if (oem_id) {
- oem_id_len = min((int)strlen(oem_id), 6);
- memcpy(header->oem_id, oem_id, oem_id_len);
- }
- if (oem_table_id) {
- oem_table_id_len = min((int)strlen(oem_table_id), 8);
- memcpy(header->oem_table_id, oem_table_id, oem_table_id_len);
- }
- header->oem_revision = oem_revision;
- cur.buf = (void *)(header + 1);
- nhlt_serialise_endpoints(nhlt, &cur);
- header->checksum = table_compute_checksum(header, sz);
- nhlt_free_resources(nhlt);
- ret = acpi_add_table(ctx, ctx->current);
- if (ret)
- return log_msg_ret("add", ret);
- acpi_inc_align(ctx, sz);
- return 0;
- }
- static int _nhlt_add_single_endpoint(struct nhlt *nhlt, int virtual_bus_id,
- const struct nhlt_endp_descriptor *epd)
- {
- struct nhlt_endpoint *endp;
- int ret;
- endp = nhlt_add_endpoint(nhlt, epd->link, epd->device, epd->direction,
- epd->vid, epd->did);
- if (!endp)
- return -EINVAL;
- endp->virtual_bus_id = virtual_bus_id;
- ret = nhlt_endpoint_append_config(endp, epd->cfg, epd->cfg_size);
- if (ret)
- return ret;
- ret = nhlt_endpoint_add_formats(endp, epd->formats, epd->num_formats);
- if (ret)
- return log_msg_ret("formats", ret);
- 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;
- int ret;
- for (i = 0; i < num_epds; i++) {
- ret = _nhlt_add_single_endpoint(nhlt, virtual_bus_id, &epds[i]);
- if (ret)
- return log_ret(ret);
- }
- 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;
- }
|