michaelh/zephyr
1
0
Fork 0
Code Releases Activity

emul: espi: Add ACPI Shared Memory functions

Browse source 
Add the bare minimum to set and access the ACPI shared memory via the
eSPI emulator.

Signed-off-by: Yuval Peress <peress@chromium.org>
This commit is contained in:
Yuval Peress 2021-07-28 21:40:13 -06:00 • committed by Anas Nashif
commit ab6e724ab4
9 changed files with 192 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

45
drivers/espi/espi_emul.c
View file

@ -87,6 +87,49 @@ static bool espi_emul_get_channel_status(const struct device *dev, enum espi_cha
return (data->cfg.channel_caps & ch);
}
static int espi_emul_read_lpc_request(const struct device *dev,
enum lpc_peripheral_opcode op,
uint32_t *data)
{
const struct emul_espi_device_api *api;
struct espi_emul *emul;
struct espi_emul_data *emul_data = dev->data;
if (!(emul_data->cfg.channel_caps & ESPI_CHANNEL_VWIRE)) {
LOG_ERR("bad channel vwire");
return -EINVAL;
}
emul = espi_emul_find(dev, EMUL_ESPI_HOST_CHIPSEL);
if (!emul) {
LOG_ERR("espi_emul not found");
return -ENOTSUP;
}
__ASSERT_NO_MSG(emul->api);
api = emul->api;
switch (op) {
#ifdef CONFIG_ESPI_PERIPHERAL_ACPI_SHM_REGION
case EACPI_GET_SHARED_MEMORY:
__ASSERT_NO_MSG(api->get_acpi_shm);
*data = (uint32_t)api->get_acpi_shm(emul);
break;
#endif
default:
return -EINVAL;
}
return 0;
}
static int espi_emul_write_lpc_request(const struct device *dev, enum lpc_peripheral_opcode op,
uint32_t *data)
{
ARG_UNUSED(dev);
return -EINVAL;
}
static int espi_emul_send_vwire(const struct device *dev, enum espi_vwire_signal vw, uint8_t level)
{
const struct emul_espi_device_api *api;
@ -172,6 +215,8 @@ static struct emul_espi_driver_api emul_espi_driver_api = {
.espi_api = {
.config = espi_emul_config,
.get_channel_status = espi_emul_get_channel_status,
.read_lpc_request = espi_emul_read_lpc_request,
.write_lpc_request = espi_emul_write_lpc_request,
.send_vwire = espi_emul_send_vwire,
.receive_vwire = espi_emul_receive_vwire,
.manage_callback = espi_emul_manage_callback