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drivers/wifi/generic: Fix properties in generic-under-PCI device case 

In the devicetree case where a generic device underneath the Intel PCI
CNVi device carries the device properties, the incorrect device was
passed to wifi_ssdt_write_properties.

Also while here, update the UUID for `DmaProperty` to match what
Microsoft defined here:
https://docs.microsoft.com/en-us/windows-hardware/drivers/pci/dsd-for-pcie-root-ports

BUG=b:215424986, b:220639445
TEST=dump SSDT and see that _PRW for CNVi device is no longer garbage,
but contains the value from the devicetree (GPE0_PME_B0).

Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: Iafd86458d2f65ccb7e74d1308d37fd3ebbf7f520
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62746
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: YH Lin <yueherngl@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Varshit B Pandya <varshit.b.pandya@intel.com>
This commit is contained in:
Tim Wawrzynczak 2022-03-10 16:25:27 -07:00
parent dc27d807ba
commit 5e6fd360de
2 changed files with 29 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
src/drivers/wifi/generic/acpi.c
View File

@ -26,8 +26,8 @@
/* Unique ID for the WIFI _DSM */
#define ACPI_DSM_OEM_WIFI_UUID "F21202BF-8F78-4DC6-A5B3-1F738E285ADE"
/* Unique ID for the Wifi _DSD */
#define ACPI_DSD_UNTRUSTED_UUID "88566a92-1a61-466d-949a-6d12809d480c"
/* ID for the Wifi DmaProperty _DSD */
#define ACPI_DSD_DMA_PROPERTY_UUID "70D24161-6DD5-4C9E-8070-705531292865"
__weak int get_wifi_sar_limits(union wifi_sar_limits *sar_limits)
{
@ -506,24 +506,25 @@ static void wifi_ssdt_write_device(const struct device *dev, const char *path)
static void wifi_ssdt_write_properties(const struct device *dev, const char *scope)
{
const struct drivers_wifi_generic_config *config = dev->chip_info;
/* Scope */
acpigen_write_scope(scope);
if (config) {
/* Wake capabilities */
acpigen_write_PRW(config->wake, ACPI_S3);
if (dev->path.type == DEVICE_PATH_GENERIC) {
const struct drivers_wifi_generic_config *config = dev->chip_info;
if (config) {
/* Wake capabilities */
acpigen_write_PRW(config->wake, ACPI_S3);
/* Add _DSD for DmaProperty property. */
if (config->is_untrusted) {
struct acpi_dp *dsd, *pkg;
/* Add _DSD for DmaProperty property. */
if (config->is_untrusted) {
struct acpi_dp *dsd, *pkg;
dsd = acpi_dp_new_table("_DSD");
pkg = acpi_dp_new_table(ACPI_DSD_UNTRUSTED_UUID);
acpi_dp_add_integer(pkg, "DmaProperty", 1);
acpi_dp_add_package(dsd, pkg);
acpi_dp_write(dsd);
dsd = acpi_dp_new_table("_DSD");
pkg = acpi_dp_new_table(ACPI_DSD_DMA_PROPERTY_UUID);
acpi_dp_add_integer(pkg, "DmaProperty", 1);
acpi_dp_add_package(dsd, pkg);
acpi_dp_write(dsd);
}
}
}
@ -567,7 +568,9 @@ void wifi_pcie_fill_ssdt(const struct device *dev)
return;
wifi_ssdt_write_device(dev, path);
wifi_ssdt_write_properties(dev, path);
const struct device *child = dev->link_list->children;
if (child && child->path.type == DEVICE_PATH_GENERIC)
wifi_ssdt_write_properties(child, path);
}
const char *wifi_pcie_acpi_name(const struct device *dev)

18
src/drivers/wifi/generic/generic.c
View File

@ -21,6 +21,7 @@ struct device_operations wifi_pcie_ops = {
.enable_resources = pci_dev_enable_resources,
.init = wifi_pci_dev_init,
.ops_pci = &pci_dev_ops_pci,
.scan_bus = scan_static_bus,
#if CONFIG(HAVE_ACPI_TABLES)
.acpi_name = wifi_pcie_acpi_name,
.acpi_fill_ssdt = wifi_pcie_fill_ssdt,
@ -41,6 +42,11 @@ struct device_operations wifi_cnvi_ops = {
#endif
};
struct device_operations wifi_generic_ops = {
.read_resources = noop_read_resources,
.set_resources = noop_set_resources,
};
static bool is_cnvi(const struct device *dev)
{
return dev && dev->path.type != DEVICE_PATH_PCI;
@ -59,16 +65,12 @@ bool wifi_generic_cnvi_ddr_rfim_enabled(const struct device *dev)
static void wifi_generic_enable(struct device *dev)
{
DEVTREE_CONST struct drivers_wifi_generic_config *config = dev ? dev->chip_info : NULL;
if (!config)
return;
#if !DEVTREE_EARLY
if (is_cnvi(dev))
dev->ops = &wifi_cnvi_ops;
const struct device *parent = dev->bus->dev;
if (parent && parent->ops == &wifi_pcie_ops)
dev->ops = &wifi_generic_ops;
else
dev->ops = &wifi_pcie_ops;
dev->ops = &wifi_cnvi_ops;
#endif
}