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wifi: iwlwifi: add support for accepting raw DSM tables by firmware

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Firmware would assert on undefined bits in DSM-originated DWs.
With this change, Firmware introduces a fail-safe mechanism
and removes the assert behavior. This ensures robustness when
handling raw DSM table data.

Signed-off-by: Pagadala Yesu Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250710212632.eee871df03c9.I2be2eaa16437e84aa1be0c6c95ec334034ce7e50@changeid
This commit is contained in:
Pagadala Yesu Anjaneyulu 2025-07-10 21:28:32 +03:00 committed by Miri Korenblit
parent 8513096a34
commit ea045a0de3
6 changed files with 63 additions and 16 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

1
drivers/net/wireless/intel/iwlwifi/fw/api/nvm-reg.h
View file

@ -787,6 +787,7 @@ struct iwl_lari_config_change_cmd {
/* Activate UNII-1 (5.2GHz) for World Wide */
#define ACTIVATE_5G2_IN_WW_MASK BIT(4)
#define CHAN_STATE_ACTIVE_BITMAP_CMD_V11 0x1F
#define CHAN_STATE_ACTIVE_BITMAP_CMD_V12 0x7F
/**
* struct iwl_pnvm_init_complete_ntfy - PNVM initialization complete

6
drivers/net/wireless/intel/iwlwifi/fw/debugfs.c
View file

@ -389,6 +389,12 @@ static int iwl_dbgfs_fw_info_seq_show(struct seq_file *seq, void *v)
" %d: %d\n",
IWL_UCODE_TLV_CAPA_CHINA_22_REG_SUPPORT,
has_capa);
has_capa = fw_has_capa(&fw->ucode_capa,
IWL_UCODE_TLV_CAPA_FW_ACCEPTS_RAW_DSM_TABLE) ? 1 : 0;
seq_printf(seq,
" %d: %d\n",
IWL_UCODE_TLV_CAPA_FW_ACCEPTS_RAW_DSM_TABLE,
has_capa);
seq_puts(seq, "fw_api_ver:\n");
}

3
drivers/net/wireless/intel/iwlwifi/fw/file.h
View file

@ -407,6 +407,8 @@ typedef unsigned int __bitwise iwl_ucode_tlv_capa_t;
* for CA from BIOS.
* @IWL_UCODE_TLV_CAPA_UHB_CANADA_TAS_SUPPORT: supports %TAS_UHB_ALLOWED_CANADA
* @IWL_UCODE_TLV_CAPA_EXT_FSEQ_IMAGE_SUPPORT: external FSEQ image support
* @IWL_UCODE_TLV_CAPA_FW_ACCEPTS_RAW_DSM_TABLE: Firmware has capability of
* handling raw DSM table data.
*
* @NUM_IWL_UCODE_TLV_CAPA: number of bits used
*/
@ -517,6 +519,7 @@ enum iwl_ucode_tlv_capa {
* during assert handling even if the dump isn't split
*/
IWL_UCODE_TLV_CAPA_RESET_DURING_ASSERT = (__force iwl_ucode_tlv_capa_t)(4 * 32 + 0),
IWL_UCODE_TLV_CAPA_FW_ACCEPTS_RAW_DSM_TABLE = (__force iwl_ucode_tlv_capa_t)(4 * 32 + 1),
NUM_IWL_UCODE_TLV_CAPA
/*
* This construction make both sparse (which cannot increment the previous

35
drivers/net/wireless/intel/iwlwifi/fw/regulatory.c
View file

@ -579,6 +579,8 @@ int iwl_fill_lari_config(struct iwl_fw_runtime *fwrt,
{
int ret;
u32 value;
bool has_raw_dsm_capa = fw_has_capa(&fwrt->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_FW_ACCEPTS_RAW_DSM_TABLE);
u8 cmd_ver = iwl_fw_lookup_cmd_ver(fwrt->fw,
WIDE_ID(REGULATORY_AND_NVM_GROUP,
LARI_CONFIG_CHANGE), 1);
@ -593,17 +595,22 @@ int iwl_fill_lari_config(struct iwl_fw_runtime *fwrt,
cmd->config_bitmap = iwl_get_lari_config_bitmap(fwrt);
ret = iwl_bios_get_dsm(fwrt, DSM_FUNC_11AX_ENABLEMENT, &value);
if (!ret)
if (!ret) {
if (!has_raw_dsm_capa)
value &= DSM_11AX_ALLOW_BITMAP;
cmd->oem_11ax_allow_bitmap = cpu_to_le32(value);
}
ret = iwl_bios_get_dsm(fwrt, DSM_FUNC_ENABLE_UNII4_CHAN, &value);
if (!ret) {
value &= DSM_UNII4_ALLOW_BITMAP;
if (!has_raw_dsm_capa)
value &= DSM_UNII4_ALLOW_BITMAP;
/* Since version 9, bits 4 and 5 are supported
* regardless of this capability.
* regardless of this capability, By pass this masking
* if firmware has capability of accepting raw DSM table.
*/
if (cmd_ver < 9 &&
if (!has_raw_dsm_capa && cmd_ver < 9 &&
!fw_has_capa(&fwrt->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_BIOS_OVERRIDE_5G9_FOR_CA))
value &= ~(DSM_VALUE_UNII4_CANADA_OVERRIDE_MSK |
@ -614,13 +621,17 @@ int iwl_fill_lari_config(struct iwl_fw_runtime *fwrt,
ret = iwl_bios_get_dsm(fwrt, DSM_FUNC_ACTIVATE_CHANNEL, &value);
if (!ret) {
if (cmd_ver < 8)
if (!has_raw_dsm_capa)
value &= CHAN_STATE_ACTIVE_BITMAP_CMD_V12;
if (!has_raw_dsm_capa && cmd_ver < 8)
value &= ~ACTIVATE_5G2_IN_WW_MASK;
/* Since version 12, bits 5 and 6 are supported
* regardless of this capability.
* regardless of this capability, By pass this masking
* if firmware has capability of accepting raw DSM table.
*/
if (cmd_ver < 12 &&
if (!has_raw_dsm_capa && cmd_ver < 12 &&
!fw_has_capa(&fwrt->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_BIOS_OVERRIDE_UNII4_US_CA))
value &= CHAN_STATE_ACTIVE_BITMAP_CMD_V11;
@ -633,13 +644,19 @@ int iwl_fill_lari_config(struct iwl_fw_runtime *fwrt,
cmd->oem_uhb_allow_bitmap = cpu_to_le32(value);
ret = iwl_bios_get_dsm(fwrt, DSM_FUNC_FORCE_DISABLE_CHANNELS, &value);
if (!ret)
if (!ret) {
if (!has_raw_dsm_capa)
value &= DSM_FORCE_DISABLE_CHANNELS_ALLOWED_BITMAP;
cmd->force_disable_channels_bitmap = cpu_to_le32(value);
}
ret = iwl_bios_get_dsm(fwrt, DSM_FUNC_ENERGY_DETECTION_THRESHOLD,
&value);
if (!ret)
if (!ret) {
if (!has_raw_dsm_capa)
value &= DSM_EDT_ALLOWED_BITMAP;
cmd->edt_bitmap = cpu_to_le32(value);
}
ret = iwl_bios_get_wbem(fwrt, &value);
if (!ret)

4
drivers/net/wireless/intel/iwlwifi/fw/regulatory.h
View file

@ -159,6 +159,10 @@ enum iwl_dsm_unii4_bitmap {
DSM_VALUE_UNII4_CANADA_OVERRIDE_MSK |\
DSM_VALUE_UNII4_CANADA_EN_MSK)
#define DSM_11AX_ALLOW_BITMAP 0xF
#define DSM_EDT_ALLOWED_BITMAP 0x7ffff0
#define DSM_FORCE_DISABLE_CHANNELS_ALLOWED_BITMAP 0x7FF
enum iwl_dsm_values_rfi {
DSM_VALUE_RFI_DLVR_DISABLE = BIT(0),
DSM_VALUE_RFI_DDR_DISABLE = BIT(1),

30
drivers/net/wireless/intel/iwlwifi/mld/regulatory.c
View file

@ -238,34 +238,50 @@ void iwl_mld_configure_lari(struct iwl_mld *mld)
struct iwl_lari_config_change_cmd cmd = {
.config_bitmap = iwl_get_lari_config_bitmap(fwrt),
};
bool has_raw_dsm_capa = fw_has_capa(&fwrt->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_FW_ACCEPTS_RAW_DSM_TABLE);
int ret;
u32 value;
ret = iwl_bios_get_dsm(fwrt, DSM_FUNC_11AX_ENABLEMENT, &value);
if (!ret)
if (!ret) {
if (!has_raw_dsm_capa)
value &= DSM_11AX_ALLOW_BITMAP;
cmd.oem_11ax_allow_bitmap = cpu_to_le32(value);
}
ret = iwl_bios_get_dsm(fwrt, DSM_FUNC_ENABLE_UNII4_CHAN, &value);
if (!ret)
cmd.oem_unii4_allow_bitmap =
cpu_to_le32(value &= DSM_UNII4_ALLOW_BITMAP);
if (!ret) {
if (!has_raw_dsm_capa)
value &= DSM_UNII4_ALLOW_BITMAP;
cmd.oem_unii4_allow_bitmap = cpu_to_le32(value);
}
ret = iwl_bios_get_dsm(fwrt, DSM_FUNC_ACTIVATE_CHANNEL, &value);
if (!ret)
if (!ret) {
if (!has_raw_dsm_capa)
value &= CHAN_STATE_ACTIVE_BITMAP_CMD_V12;
cmd.chan_state_active_bitmap = cpu_to_le32(value);
}
ret = iwl_bios_get_dsm(fwrt, DSM_FUNC_ENABLE_6E, &value);
if (!ret)
cmd.oem_uhb_allow_bitmap = cpu_to_le32(value);
ret = iwl_bios_get_dsm(fwrt, DSM_FUNC_FORCE_DISABLE_CHANNELS, &value);
if (!ret)
if (!ret) {
if (!has_raw_dsm_capa)
value &= DSM_FORCE_DISABLE_CHANNELS_ALLOWED_BITMAP;
cmd.force_disable_channels_bitmap = cpu_to_le32(value);
}
ret = iwl_bios_get_dsm(fwrt, DSM_FUNC_ENERGY_DETECTION_THRESHOLD,
&value);
if (!ret)
if (!ret) {
if (!has_raw_dsm_capa)
value &= DSM_EDT_ALLOWED_BITMAP;
cmd.edt_bitmap = cpu_to_le32(value);
}
ret = iwl_bios_get_wbem(fwrt, &value);
if (!ret)