mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-30 22:08:52 +09:00
![Simon Glass](/assets/img/avatar_default.png)
At present these tables do not have the correct header, and there is an occasional incorrect value due to uninited data. Fix these bugs. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
492 lines
12 KiB
C
492 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2020 Google LLC
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*
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* Modified from coreboot nhlt.c
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*/
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#define LOG_CATEGORY LOGC_ACPI
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#include <common.h>
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#include <binman.h>
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#include <dm.h>
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#include <log.h>
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#include <malloc.h>
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#include <tables_csum.h>
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#include <acpi/acpi_table.h>
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#include <asm/acpi_nhlt.h>
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#include <asm/unaligned.h>
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#include <dm/acpi.h>
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#define NHLT_RID 1
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#define NHLT_SSID 1
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#define WAVEFORMAT_TAG 0xfffe
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#define DEFAULT_VIRTUAL_BUS_ID 0
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static const struct sub_format pcm_subformat = {
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.data1 = 0x00000001,
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.data2 = 0x0000,
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.data3 = 0x0010,
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.data4 = { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 },
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};
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struct nhlt *nhlt_init(void)
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{
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struct nhlt *nhlt;
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nhlt = malloc(sizeof(*nhlt));
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if (!nhlt)
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return NULL;
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memset(nhlt, 0, sizeof(*nhlt));
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nhlt->subsystem_id = NHLT_SSID;
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return nhlt;
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}
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struct nhlt_endpoint *nhlt_add_endpoint(struct nhlt *nhlt, int link_type,
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int device_type, int dir,
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u16 vid, u16 did)
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{
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struct nhlt_endpoint *endp;
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if (link_type < NHLT_LINK_HDA || link_type >= NHLT_MAX_LINK_TYPES)
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return NULL;
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if (nhlt->num_endpoints >= MAX_ENDPOINTS)
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return NULL;
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endp = &nhlt->endpoints[nhlt->num_endpoints];
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endp->link_type = link_type;
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endp->instance_id = nhlt->current_instance_id[link_type];
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endp->vendor_id = vid;
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endp->device_id = did;
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endp->revision_id = NHLT_RID;
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endp->subsystem_id = nhlt->subsystem_id;
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endp->device_type = device_type;
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endp->direction = dir;
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endp->virtual_bus_id = DEFAULT_VIRTUAL_BUS_ID;
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endp->num_formats = 0;
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nhlt->num_endpoints++;
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return endp;
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}
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static int append_specific_config(struct nhlt_specific_config *spec_cfg,
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const void *config, size_t config_sz)
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{
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size_t new_sz;
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void *new_cfg;
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new_sz = spec_cfg->size + config_sz;
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new_cfg = malloc(new_sz);
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if (!new_cfg)
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return -ENOMEM;
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/* Append new config */
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memcpy(new_cfg, spec_cfg->capabilities, spec_cfg->size);
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memcpy(new_cfg + spec_cfg->size, config, config_sz);
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free(spec_cfg->capabilities);
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/* Update with new config data */
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spec_cfg->size = new_sz;
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spec_cfg->capabilities = new_cfg;
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return 0;
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}
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int nhlt_endpoint_append_config(struct nhlt_endpoint *endp, const void *config,
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size_t config_sz)
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{
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return append_specific_config(&endp->config, config, config_sz);
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}
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struct nhlt_format *nhlt_add_format(struct nhlt_endpoint *endp,
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int num_channels, int sample_freq_khz,
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int container_bits_per_sample,
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int valid_bits_per_sample,
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uint32_t speaker_mask)
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{
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struct nhlt_format *fmt;
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struct nhlt_waveform *wave;
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if (endp->num_formats >= MAX_FORMATS)
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return NULL;
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fmt = &endp->formats[endp->num_formats];
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wave = &fmt->waveform;
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wave->tag = WAVEFORMAT_TAG;
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wave->num_channels = num_channels;
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wave->samples_per_second = sample_freq_khz * 1000;
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wave->bits_per_sample = container_bits_per_sample;
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wave->extra_size = sizeof(wave->valid_bits_per_sample);
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wave->extra_size += sizeof(wave->channel_mask);
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wave->extra_size += sizeof(wave->sub_format);
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wave->valid_bits_per_sample = valid_bits_per_sample;
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wave->channel_mask = speaker_mask;
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memcpy(&wave->sub_format, &pcm_subformat, sizeof(wave->sub_format));
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/* Calculate the dervied fields */
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wave->block_align = wave->num_channels * wave->bits_per_sample / 8;
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wave->bytes_per_second = wave->block_align * wave->samples_per_second;
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endp->num_formats++;
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return fmt;
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}
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int nhlt_format_append_config(struct nhlt_format *fmt, const void *config,
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size_t config_sz)
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{
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return append_specific_config(&fmt->config, config, config_sz);
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}
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int nhlt_endpoint_add_formats(struct nhlt_endpoint *endp,
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const struct nhlt_format_config *formats,
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size_t num_formats)
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{
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ofnode node;
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size_t i;
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node = binman_section_find_node("private-files");
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for (i = 0; i < num_formats; i++) {
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const struct nhlt_format_config *cfg = &formats[i];
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struct nhlt_format *fmt;
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void *data;
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int size;
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int ret;
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fmt = nhlt_add_format(endp, cfg->num_channels,
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cfg->sample_freq_khz,
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cfg->container_bits_per_sample,
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cfg->valid_bits_per_sample,
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cfg->speaker_mask);
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if (!fmt)
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return -ENOSPC;
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if (!cfg->settings_file)
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continue;
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ret = binman_entry_map(node, cfg->settings_file, &data, &size);
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if (ret) {
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log_warning("Failed to find settings file %s\n",
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cfg->settings_file);
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return log_msg_ret("settings", ret);
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}
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ret = nhlt_format_append_config(fmt, data, size);
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if (ret)
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return log_msg_ret("append", ret);
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}
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return 0;
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}
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void nhlt_next_instance(struct nhlt *nhlt, int link_type)
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{
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if (link_type < NHLT_LINK_HDA || link_type >= NHLT_MAX_LINK_TYPES)
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return;
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nhlt->current_instance_id[link_type]++;
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}
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static size_t calc_specific_config_size(struct nhlt_specific_config *cfg)
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{
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return sizeof(cfg->size) + cfg->size;
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}
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static size_t calc_format_size(struct nhlt_format *fmt)
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{
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size_t sz = 0;
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/* Wave format first */
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sz += sizeof(fmt->waveform.tag);
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sz += sizeof(fmt->waveform.num_channels);
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sz += sizeof(fmt->waveform.samples_per_second);
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sz += sizeof(fmt->waveform.bytes_per_second);
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sz += sizeof(fmt->waveform.block_align);
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sz += sizeof(fmt->waveform.bits_per_sample);
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sz += sizeof(fmt->waveform.extra_size);
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sz += sizeof(fmt->waveform.valid_bits_per_sample);
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sz += sizeof(fmt->waveform.channel_mask);
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sz += sizeof(fmt->waveform.sub_format);
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sz += calc_specific_config_size(&fmt->config);
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return sz;
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}
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static size_t calc_endpoint_size(struct nhlt_endpoint *endp)
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{
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int i;
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size_t sz = 0;
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sz += sizeof(endp->length) + sizeof(endp->link_type);
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sz += sizeof(endp->instance_id) + sizeof(endp->vendor_id);
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sz += sizeof(endp->device_id) + sizeof(endp->revision_id);
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sz += sizeof(endp->subsystem_id) + sizeof(endp->device_type);
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sz += sizeof(endp->direction) + sizeof(endp->virtual_bus_id);
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sz += calc_specific_config_size(&endp->config);
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sz += sizeof(endp->num_formats);
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for (i = 0; i < endp->num_formats; i++)
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sz += calc_format_size(&endp->formats[i]);
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/* Adjust endpoint length to reflect current configuration */
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endp->length = sz;
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return sz;
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}
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static size_t calc_endpoints_size(struct nhlt *nhlt)
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{
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size_t sz = 0;
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int i;
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for (i = 0; i < nhlt->num_endpoints; i++)
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sz += calc_endpoint_size(&nhlt->endpoints[i]);
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return sz;
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}
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static size_t calc_size(struct nhlt *nhlt)
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{
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return sizeof(nhlt->num_endpoints) + calc_endpoints_size(nhlt);
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}
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size_t nhlt_current_size(struct nhlt *nhlt)
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{
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return calc_size(nhlt) + sizeof(struct acpi_table_header);
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}
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static void nhlt_free_resources(struct nhlt *nhlt)
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{
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int i, j;
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/* Free all specific configs */
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for (i = 0; i < nhlt->num_endpoints; i++) {
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struct nhlt_endpoint *endp = &nhlt->endpoints[i];
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free(endp->config.capabilities);
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for (j = 0; j < endp->num_formats; j++) {
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struct nhlt_format *fmt = &endp->formats[j];
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free(fmt->config.capabilities);
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}
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}
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/* Free nhlt object proper */
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free(nhlt);
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}
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struct cursor {
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u8 *start;
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u8 *buf;
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};
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static void ser8(struct cursor *cur, uint val)
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{
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*cur->buf = val;
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cur->buf += sizeof(u8);
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}
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static void ser16(struct cursor *cur, uint val)
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{
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put_unaligned_le16(val, cur->buf);
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cur->buf += sizeof(u16);
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}
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static void ser32(struct cursor *cur, uint val)
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{
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put_unaligned_le32(val, cur->buf);
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cur->buf += sizeof(u32);
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}
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static void serblob(struct cursor *cur, void *from, size_t sz)
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{
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memcpy(cur->buf, from, sz);
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cur->buf += sz;
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}
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static void serialise_specific_config(struct nhlt_specific_config *cfg,
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struct cursor *cur)
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{
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log_debug("%zx\n", cur->buf - cur->start);
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ser32(cur, cfg->size);
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serblob(cur, cfg->capabilities, cfg->size);
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}
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static void serialise_waveform(struct nhlt_waveform *wave, struct cursor *cur)
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{
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log_debug("%zx\n", cur->buf - cur->start);
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ser16(cur, wave->tag);
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ser16(cur, wave->num_channels);
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ser32(cur, wave->samples_per_second);
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ser32(cur, wave->bytes_per_second);
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ser16(cur, wave->block_align);
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ser16(cur, wave->bits_per_sample);
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ser16(cur, wave->extra_size);
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ser16(cur, wave->valid_bits_per_sample);
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ser32(cur, wave->channel_mask);
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ser32(cur, wave->sub_format.data1);
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ser16(cur, wave->sub_format.data2);
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ser16(cur, wave->sub_format.data3);
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serblob(cur, wave->sub_format.data4, sizeof(wave->sub_format.data4));
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}
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static void serialise_format(struct nhlt_format *fmt, struct cursor *cur)
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{
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log_debug("%zx\n", cur->buf - cur->start);
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serialise_waveform(&fmt->waveform, cur);
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serialise_specific_config(&fmt->config, cur);
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}
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static void serialise_endpoint(struct nhlt_endpoint *endp, struct cursor *cur)
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{
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int i;
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log_debug("%zx\n", cur->buf - cur->start);
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ser32(cur, endp->length);
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ser8(cur, endp->link_type);
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ser8(cur, endp->instance_id);
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ser16(cur, endp->vendor_id);
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ser16(cur, endp->device_id);
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ser16(cur, endp->revision_id);
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ser32(cur, endp->subsystem_id);
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ser8(cur, endp->device_type);
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ser8(cur, endp->direction);
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ser8(cur, endp->virtual_bus_id);
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serialise_specific_config(&endp->config, cur);
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ser8(cur, endp->num_formats);
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for (i = 0; i < endp->num_formats; i++)
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serialise_format(&endp->formats[i], cur);
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}
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static void nhlt_serialise_endpoints(struct nhlt *nhlt, struct cursor *cur)
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{
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int i;
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ser8(cur, nhlt->num_endpoints);
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for (i = 0; i < nhlt->num_endpoints; i++)
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serialise_endpoint(&nhlt->endpoints[i], cur);
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}
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int nhlt_serialise_oem_overrides(struct acpi_ctx *ctx, struct nhlt *nhlt,
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const char *oem_id, const char *oem_table_id,
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uint32_t oem_revision)
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{
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struct cursor cur;
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struct acpi_table_header *header;
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size_t sz;
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size_t oem_id_len;
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size_t oem_table_id_len;
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int ret;
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log_info("ACPI: * NHLT\n");
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sz = nhlt_current_size(nhlt);
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/* Create header */
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header = (void *)ctx->current;
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memset(header, '\0', sizeof(struct acpi_table_header));
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memcpy(header->signature, "NHLT", 4);
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header->length = sz;
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header->revision = acpi_get_table_revision(ACPITAB_NHLT);
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if (oem_id) {
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oem_id_len = min((int)strlen(oem_id), 6);
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memcpy(header->oem_id, oem_id, oem_id_len);
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}
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if (oem_table_id) {
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oem_table_id_len = min((int)strlen(oem_table_id), 8);
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memcpy(header->oem_table_id, oem_table_id, oem_table_id_len);
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}
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header->oem_revision = oem_revision;
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memcpy(header->aslc_id, ASLC_ID, 4);
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cur.buf = (void *)(header + 1);
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cur.start = (void *)header;
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nhlt_serialise_endpoints(nhlt, &cur);
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header->checksum = table_compute_checksum(header, sz);
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nhlt_free_resources(nhlt);
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assert(cur.buf - cur.start == sz);
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ret = acpi_add_table(ctx, ctx->current);
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if (ret)
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return log_msg_ret("add", ret);
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acpi_inc_align(ctx, sz);
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return 0;
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}
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static int _nhlt_add_single_endpoint(struct nhlt *nhlt, int virtual_bus_id,
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const struct nhlt_endp_descriptor *epd)
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{
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struct nhlt_endpoint *endp;
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int ret;
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endp = nhlt_add_endpoint(nhlt, epd->link, epd->device, epd->direction,
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epd->vid, epd->did);
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if (!endp)
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return -EINVAL;
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endp->virtual_bus_id = virtual_bus_id;
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ret = nhlt_endpoint_append_config(endp, epd->cfg, epd->cfg_size);
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if (ret)
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return ret;
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ret = nhlt_endpoint_add_formats(endp, epd->formats, epd->num_formats);
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if (ret)
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return log_msg_ret("formats", ret);
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return 0;
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}
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static int _nhlt_add_endpoints(struct nhlt *nhlt, int virtual_bus_id,
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const struct nhlt_endp_descriptor *epds,
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size_t num_epds)
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{
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size_t i;
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int ret;
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for (i = 0; i < num_epds; i++) {
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ret = _nhlt_add_single_endpoint(nhlt, virtual_bus_id, &epds[i]);
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if (ret)
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return log_ret(ret);
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}
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return 0;
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}
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int nhlt_add_endpoints(struct nhlt *nhlt,
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const struct nhlt_endp_descriptor *epds, size_t num_epds)
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{
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int ret;
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ret = _nhlt_add_endpoints(nhlt, DEFAULT_VIRTUAL_BUS_ID, epds, num_epds);
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return ret;
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}
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int nhlt_add_ssp_endpoints(struct nhlt *nhlt, int virtual_bus_id,
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const struct nhlt_endp_descriptor *epds,
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size_t num_epds)
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{
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int ret;
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ret = _nhlt_add_endpoints(nhlt, virtual_bus_id, epds, num_epds);
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if (!ret)
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nhlt_next_instance(nhlt, NHLT_LINK_SSP);
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return ret;
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}
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