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iwlwifi: fix sar geo table initialization

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When adding support for version 3 of the GEO_TX_POWER_LIMIT command,
the table argument of iwl_sar_geo_init was changed from a pointer a 1d
array of now-removed iwl_per_chain_offset_group_v1 to a pointer to a 2d
array of iwl_per_chain_offset (iwl_per_chain_offset_group_v1 was a
struct containing 2 copies of iwl_per_chain_offset).

So even for version 2 where the second dimension is of length 2, which
means that the underlying memory layout of the array didn't change, this
requires a small change in the way we loop over it, and this was missed.

Additionally, for the case of version 3 where the second dimension is now
3, in order to fill the first two elements of each row correctly (lb and
hb), iwl_sar_geo_init must get the true number of bands supported.
But because we don't yet store any values for the 3rd (uhb) band, skip
that band.

Signed-off-by: Naftali Goldstein <naftali.goldstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20201008181047.73605b6e0548.Id0ec98333277ff9e017e3938ae413b34acc68947@changeid
This commit is contained in:
Naftali Goldstein 2020-10-08 18:12:44 +03:00 committed by Kalle Valo
parent 853f4954ba
commit 45acebf8d6
3 changed files with 42 additions and 24 deletions
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20
drivers/net/wireless/intel/iwlwifi/fw/acpi.c
View file

@ -662,17 +662,25 @@ int iwl_sar_geo_init(struct iwl_fw_runtime *fwrt,
}
for (i = 0; i < ACPI_NUM_GEO_PROFILES; i++) {
struct iwl_per_chain_offset *chain =
(struct iwl_per_chain_offset *)&table[i];
for (j = 0; j < n_bands; j++) {
struct iwl_per_chain_offset *chain =
&table[i * n_bands + j];
u8 *value;
if (j * ACPI_GEO_PER_CHAIN_SIZE >=
ARRAY_SIZE(fwrt->geo_profiles[0].values))
/*
* Currently we only store lb an hb values, and
* don't have any special ones for uhb. So leave
* those empty for the time being
*/
break;
value = &fwrt->geo_profiles[i].values[j *
ACPI_GEO_PER_CHAIN_SIZE];
chain[j].max_tx_power = cpu_to_le16(value[0]);
chain[j].chain_a = value[1];
chain[j].chain_b = value[2];
chain->max_tx_power = cpu_to_le16(value[0]);
chain->chain_a = value[1];
chain->chain_b = value[2];
IWL_DEBUG_RADIO(fwrt,
"SAR geographic profile[%d] Band[%d]: chain A = %d chain B = %d max_tx_power = %d\n",
i, j, value[1], value[2], value[0]);

1
drivers/net/wireless/intel/iwlwifi/fw/acpi.h
View file

@ -105,7 +105,6 @@
#define APCI_WTAS_BLACK_LIST_MAX 16
#define ACPI_WTAS_WIFI_DATA_SIZE (3 + APCI_WTAS_BLACK_LIST_MAX)
#define ACPI_WGDS_NUM_BANDS 2
#define ACPI_WGDS_TABLE_SIZE 3
#define ACPI_PPAG_WIFI_DATA_SIZE ((IWL_NUM_CHAIN_LIMITS * \

45
drivers/net/wireless/intel/iwlwifi/mvm/fw.c
View file

@ -923,14 +923,39 @@ static int iwl_mvm_sar_geo_init(struct iwl_mvm *mvm)
{
union iwl_geo_tx_power_profiles_cmd cmd;
u16 len;
u32 n_bands;
int ret;
u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, PHY_OPS_GROUP,
GEO_TX_POWER_LIMIT,
IWL_FW_CMD_VER_UNKNOWN);
/* the table is also at the same position both in v1 and v2 */
ret = iwl_sar_geo_init(&mvm->fwrt, &cmd.v1.table[0][0],
ACPI_WGDS_NUM_BANDS);
BUILD_BUG_ON(offsetof(struct iwl_geo_tx_power_profiles_cmd_v1, ops) !=
offsetof(struct iwl_geo_tx_power_profiles_cmd_v2, ops) ||
offsetof(struct iwl_geo_tx_power_profiles_cmd_v2, ops) !=
offsetof(struct iwl_geo_tx_power_profiles_cmd_v3, ops));
/* the ops field is at the same spot for all versions, so set in v1 */
cmd.v1.ops = cpu_to_le32(IWL_PER_CHAIN_OFFSET_SET_TABLES);
if (cmd_ver == 3) {
len = sizeof(cmd.v3);
n_bands = ARRAY_SIZE(cmd.v3.table[0]);
cmd.v3.table_revision = cpu_to_le32(mvm->fwrt.geo_rev);
} else if (fw_has_api(&mvm->fwrt.fw->ucode_capa,
IWL_UCODE_TLV_API_SAR_TABLE_VER)) {
len = sizeof(cmd.v2);
n_bands = ARRAY_SIZE(cmd.v2.table[0]);
cmd.v2.table_revision = cpu_to_le32(mvm->fwrt.geo_rev);
} else {
len = sizeof(cmd.v1);
n_bands = ARRAY_SIZE(cmd.v1.table[0]);
}
BUILD_BUG_ON(offsetof(struct iwl_geo_tx_power_profiles_cmd_v1, table) !=
offsetof(struct iwl_geo_tx_power_profiles_cmd_v2, table) ||
offsetof(struct iwl_geo_tx_power_profiles_cmd_v2, table) !=
offsetof(struct iwl_geo_tx_power_profiles_cmd_v3, table));
/* the table is at the same position for all versions, so set use v1 */
ret = iwl_sar_geo_init(&mvm->fwrt, &cmd.v1.table[0][0], n_bands);
/*
* It is a valid scenario to not support SAR, or miss wgds table,
@ -939,20 +964,6 @@ static int iwl_mvm_sar_geo_init(struct iwl_mvm *mvm)
if (ret)
return 0;
/* the ops field is at the same spot for all versions, so set in v1 */
cmd.v1.ops = cpu_to_le32(IWL_PER_CHAIN_OFFSET_SET_TABLES);
if (cmd_ver == 3) {
len = sizeof(cmd.v3);
cmd.v3.table_revision = cpu_to_le32(mvm->fwrt.geo_rev);
} else if (fw_has_api(&mvm->fwrt.fw->ucode_capa,
IWL_UCODE_TLV_API_SAR_TABLE_VER)) {
len = sizeof(cmd.v2);
cmd.v2.table_revision = cpu_to_le32(mvm->fwrt.geo_rev);
} else {
len = sizeof(cmd.v1);
}
return iwl_mvm_send_cmd_pdu(mvm,
WIDE_ID(PHY_OPS_GROUP, GEO_TX_POWER_LIMIT),
0, len, &cmd);