u-boot-brain/arch/x86/lib/acpi_nhlt.c
Simon Glass 8bcfb7917a x86: nhlt: Fix a few bugs in the table generation
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>
2020-11-06 09:51:29 +08:00

492 lines
12 KiB
C

// 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;
endp->num_formats = 0;
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 *start;
u8 *buf;
};
static void ser8(struct cursor *cur, uint val)
{
*cur->buf = val;
cur->buf += sizeof(u8);
}
static void ser16(struct cursor *cur, uint val)
{
put_unaligned_le16(val, cur->buf);
cur->buf += sizeof(u16);
}
static void ser32(struct cursor *cur, uint val)
{
put_unaligned_le32(val, cur->buf);
cur->buf += sizeof(u32);
}
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)
{
log_debug("%zx\n", cur->buf - cur->start);
ser32(cur, cfg->size);
serblob(cur, cfg->capabilities, cfg->size);
}
static void serialise_waveform(struct nhlt_waveform *wave, struct cursor *cur)
{
log_debug("%zx\n", cur->buf - cur->start);
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)
{
log_debug("%zx\n", cur->buf - cur->start);
serialise_waveform(&fmt->waveform, cur);
serialise_specific_config(&fmt->config, cur);
}
static void serialise_endpoint(struct nhlt_endpoint *endp, struct cursor *cur)
{
int i;
log_debug("%zx\n", cur->buf - cur->start);
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));
memcpy(header->signature, "NHLT", 4);
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;
memcpy(header->aslc_id, ASLC_ID, 4);
cur.buf = (void *)(header + 1);
cur.start = (void *)header;
nhlt_serialise_endpoints(nhlt, &cur);
header->checksum = table_compute_checksum(header, sz);
nhlt_free_resources(nhlt);
assert(cur.buf - cur.start == sz);
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;
}