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drivers/wifi: Support 320Mhz Bandwidth Enablement per MCC

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Add support for the configuration of 320MHz Bandwidth per MCC based on
countries. The implementation follows document #559910 Intel
Connectivity Platforms BIOS Guidelines revision 8.3.

BUG=b:333804562
BRANCH=firmware-rex-15709.B
TEST=WBEM method is added to the CNVW device and return the data
     supplied by the SAR binary blob

Change-Id: Ie76794825f1a0104d199c078aa4ffc714aa95b17
Signed-off-by: Poornima Tom <poornima.tom@intel.com>
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81790
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Poornima Tom 2024-04-11 07:07:42 +05:30 committed by Jérémy Compostella
parent 71dda74fe8
commit 89566946fb
3 changed files with 58 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
src/drivers/wifi/generic/acpi.c
View File

@ -539,6 +539,43 @@ static void sar_emit_brds(const struct bsar_profile *bsar)
acpigen_write_package_end();
}
static void sar_emit_wbem(const struct wbem_profile *wbem)
{
if (wbem == NULL)
return;
/*
* Name ("WBEM", Package() {
* {
* Revision,
* Package()
* {
* DomainType, // 0x7:WiFi
* bandwidth_320mhz_country_enablement // 0 Disabled
* // 1 Japan Enabled
* // 2 South Korea Enabled
* // 3 Japan + South Korea Enabled
* }
} })
*/
if (wbem->revision != WBEM_REVISION) {
printk(BIOS_ERR, "Unsupported WBEM table revision: %d\n",
wbem->revision);
return;
}
acpigen_write_name("WBEM");
acpigen_write_package(2);
acpigen_write_dword(wbem->revision);
acpigen_write_package(2);
acpigen_write_dword(DOMAIN_TYPE_WIFI);
acpigen_write_dword(wbem->bandwidth_320mhz_country_enablement);
acpigen_write_package_end();
acpigen_write_package_end();
}
static void emit_sar_acpi_structures(const struct device *dev, struct dsm_profile *dsm,
struct bsar_profile *bsar, bool *bsar_loaded)
{
@ -562,6 +599,7 @@ static void emit_sar_acpi_structures(const struct device *dev, struct dsm_profil
sar_emit_wgds(sar_limits.wgds);
sar_emit_ppag(sar_limits.ppag);
sar_emit_wtas(sar_limits.wtas);
sar_emit_wbem(sar_limits.wbem);
/* copy the dsm data to be later used for creating _DSM function */
if (sar_limits.dsm != NULL)

9
src/include/sar.h
View File

@ -9,9 +9,10 @@
#define MAX_DENYLIST_ENTRY 16
#define MAX_DSAR_SET_COUNT 3
#define MAX_GEO_OFFSET_REVISION 3
#define MAX_PROFILE_COUNT 6
#define MAX_PROFILE_COUNT 7
#define MAX_SAR_REVISION 2
#define BSAR_REVISION 1
#define WBEM_REVISION 0
#define REVISION_SIZE 1
#define SAR_REV0_CHAINS_COUNT 2
#define SAR_REV0_SUBBANDS_COUNT 5
@ -73,6 +74,11 @@ struct bsar_profile {
uint8_t le_lr_modulation;
} __packed;
struct wbem_profile {
uint8_t revision;
uint32_t bandwidth_320mhz_country_enablement;
} __packed;
struct sar_header {
char marker[SAR_STR_PREFIX_SIZE];
uint8_t version;
@ -88,6 +94,7 @@ union wifi_sar_limits {
struct avg_profile *wtas;
struct dsm_profile *dsm;
struct bsar_profile *bsar;
struct wbem_profile *wbem;
};
void *profile[MAX_PROFILE_COUNT];
};

12
src/vendorcode/google/chromeos/sar.c
View File

@ -102,6 +102,14 @@ static int bsar_table_size(const struct bsar_profile *bsar)
return sizeof(struct bsar_profile);
}
static int wbem_table_size(const struct wbem_profile *wbem)
{
if (wbem == NULL)
return 0;
return sizeof(struct wbem_profile);
}
static bool valid_legacy_length(size_t bin_len)
{
if (bin_len == LEGACY_SAR_WGDS_BIN_SIZE)
@ -154,6 +162,7 @@ static int fill_wifi_sar_limits(union wifi_sar_limits *sar_limits, const uint8_t
expected_sar_bin_size += sar_avg_table_size(sar_limits->wtas);
expected_sar_bin_size += dsm_table_size(sar_limits->dsm);
expected_sar_bin_size += bsar_table_size(sar_limits->bsar);
expected_sar_bin_size += wbem_table_size(sar_limits->wbem);
if (sar_bin_size != expected_sar_bin_size) {
printk(BIOS_ERR, "Invalid SAR size, expected: %zu, obtained: %zu\n",
@ -220,6 +229,7 @@ static int fill_wifi_sar_limits_legacy(union wifi_sar_limits *sar_limits,
* [WTAS_REVISION, WTAS_DATA]
* [DSM_RETURN_VALUES]
* [BSAR_REVISION,IPML,LB,BR,EDR2,EDR3,LE,LE2,LE_LR]
* [WBEM_REVISION, WBEM_DATA]
*
* The configuration data will always have the revision added in the file for each of the
* block, based on the revision number and validity, size of the specific block will be
@ -259,6 +269,8 @@ static int fill_wifi_sar_limits_legacy(union wifi_sar_limits *sar_limits,
* [Enable/disable the TAS feature]
* [Number of blocked countries that are not approved by the OEM to support this feature]
* [deny_list_entry_<1-16>: ISO country code to block]
* [WBEM_DATA] =
* [Enable or disable 320MHZ Bandwidth for Japan, SouthKorea]
*/
int get_wifi_sar_limits(union wifi_sar_limits *sar_limits)
{