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path: root/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c
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Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw/pnvm.c')
-rw-r--r--drivers/net/wireless/intel/iwlwifi/fw/pnvm.c102
1 files changed, 64 insertions, 38 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c b/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c
index 650e4bde9c17..4f3c2f7f4f5b 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
- * Copyright(c) 2020-2023 Intel Corporation
+ * Copyright(c) 2020-2025 Intel Corporation
*/
#include "iwl-drv.h"
@@ -12,6 +12,8 @@
#include "fw/api/alive.h"
#include "fw/uefi.h"
+#define IWL_PNVM_REDUCED_CAP_BIT BIT(25)
+
struct iwl_pnvm_section {
__le32 offset;
const u8 data[];
@@ -94,8 +96,8 @@ static int iwl_pnvm_handle_section(struct iwl_trans *trans, const u8 *data,
"Got IWL_UCODE_TLV_HW_TYPE mac_type 0x%0x rf_id 0x%0x\n",
mac_type, rf_id);
- if (mac_type == CSR_HW_REV_TYPE(trans->hw_rev) &&
- rf_id == CSR_HW_RFID_TYPE(trans->hw_rf_id))
+ if (mac_type == CSR_HW_REV_TYPE(trans->info.hw_rev) &&
+ rf_id == CSR_HW_RFID_TYPE(trans->info.hw_rf_id))
hw_match = true;
break;
case IWL_UCODE_TLV_SEC_RT: {
@@ -150,8 +152,8 @@ done:
if (!hw_match) {
IWL_DEBUG_FW(trans,
"HW mismatch, skipping PNVM section (need mac_type 0x%x rf_id 0x%x)\n",
- CSR_HW_REV_TYPE(trans->hw_rev),
- CSR_HW_RFID_TYPE(trans->hw_rf_id));
+ CSR_HW_REV_TYPE(trans->info.hw_rev),
+ CSR_HW_RFID_TYPE(trans->info.hw_rf_id));
return -ENOENT;
}
@@ -165,7 +167,8 @@ done:
static int iwl_pnvm_parse(struct iwl_trans *trans, const u8 *data,
size_t len,
- struct iwl_pnvm_image *pnvm_data)
+ struct iwl_pnvm_image *pnvm_data,
+ __le32 sku_id[3])
{
const struct iwl_ucode_tlv *tlv;
@@ -173,6 +176,7 @@ static int iwl_pnvm_parse(struct iwl_trans *trans, const u8 *data,
while (len >= sizeof(*tlv)) {
u32 tlv_len, tlv_type;
+ u32 rf_type;
len -= sizeof(*tlv);
tlv = (const void *)data;
@@ -187,23 +191,33 @@ static int iwl_pnvm_parse(struct iwl_trans *trans, const u8 *data,
}
if (tlv_type == IWL_UCODE_TLV_PNVM_SKU) {
- const struct iwl_sku_id *sku_id =
+ const struct iwl_sku_id *tlv_sku_id =
(const void *)(data + sizeof(*tlv));
IWL_DEBUG_FW(trans,
"Got IWL_UCODE_TLV_PNVM_SKU len %d\n",
tlv_len);
IWL_DEBUG_FW(trans, "sku_id 0x%0x 0x%0x 0x%0x\n",
- le32_to_cpu(sku_id->data[0]),
- le32_to_cpu(sku_id->data[1]),
- le32_to_cpu(sku_id->data[2]));
+ le32_to_cpu(tlv_sku_id->data[0]),
+ le32_to_cpu(tlv_sku_id->data[1]),
+ le32_to_cpu(tlv_sku_id->data[2]));
data += sizeof(*tlv) + ALIGN(tlv_len, 4);
len -= ALIGN(tlv_len, 4);
- if (trans->sku_id[0] == le32_to_cpu(sku_id->data[0]) &&
- trans->sku_id[1] == le32_to_cpu(sku_id->data[1]) &&
- trans->sku_id[2] == le32_to_cpu(sku_id->data[2])) {
+ trans->reduced_cap_sku = false;
+ rf_type = CSR_HW_RFID_TYPE(trans->info.hw_rf_id);
+ if ((sku_id[0] & cpu_to_le32(IWL_PNVM_REDUCED_CAP_BIT)) &&
+ rf_type == IWL_CFG_RF_TYPE_FM)
+ trans->reduced_cap_sku = true;
+
+ IWL_DEBUG_FW(trans,
+ "Reduced SKU device %d\n",
+ trans->reduced_cap_sku);
+
+ if (sku_id[0] == tlv_sku_id->data[0] &&
+ sku_id[1] == tlv_sku_id->data[1] &&
+ sku_id[2] == tlv_sku_id->data[2]) {
int ret;
ret = iwl_pnvm_handle_section(trans, data, len,
@@ -239,7 +253,7 @@ static int iwl_pnvm_get_from_fs(struct iwl_trans *trans, u8 **data, size_t *len)
}
new_len = pnvm->size;
- *data = kmemdup(pnvm->data, pnvm->size, GFP_KERNEL);
+ *data = kvmemdup(pnvm->data, pnvm->size, GFP_KERNEL);
release_firmware(pnvm);
if (!*data)
@@ -250,33 +264,42 @@ static int iwl_pnvm_get_from_fs(struct iwl_trans *trans, u8 **data, size_t *len)
return 0;
}
-static u8 *iwl_get_pnvm_image(struct iwl_trans *trans_p, size_t *len)
+static u8 *iwl_get_pnvm_image(struct iwl_trans *trans_p, size_t *len,
+ __le32 sku_id[3])
{
struct pnvm_sku_package *package;
u8 *image = NULL;
- /* First attempt to get the PNVM from BIOS */
- package = iwl_uefi_get_pnvm(trans_p, len);
- if (!IS_ERR_OR_NULL(package)) {
- if (*len >= sizeof(*package)) {
- /* we need only the data */
- *len -= sizeof(*package);
- image = kmemdup(package->data, *len, GFP_KERNEL);
+ /* Get PNVM from BIOS for non-Intel SKU */
+ if (sku_id[2]) {
+ package = iwl_uefi_get_pnvm(trans_p, len);
+ if (!IS_ERR_OR_NULL(package)) {
+ if (*len >= sizeof(*package)) {
+ /* we need only the data */
+ *len -= sizeof(*package);
+ image = kvmemdup(package->data,
+ *len, GFP_KERNEL);
+ }
+ /*
+ * free package regardless of whether kmemdup
+ * succeeded
+ */
+ kfree(package);
+ if (image)
+ return image;
}
- /* free package regardless of whether kmemdup succeeded */
- kfree(package);
- if (image)
- return image;
}
- /* If it's not available, try from the filesystem */
+ /* If it's not available, or for Intel SKU, try from the filesystem */
if (iwl_pnvm_get_from_fs(trans_p, &image, len))
return NULL;
return image;
}
-static void iwl_pnvm_load_pnvm_to_trans(struct iwl_trans *trans,
- const struct iwl_ucode_capabilities *capa)
+static void
+iwl_pnvm_load_pnvm_to_trans(struct iwl_trans *trans,
+ const struct iwl_ucode_capabilities *capa,
+ __le32 sku_id[3])
{
struct iwl_pnvm_image *pnvm_data = NULL;
u8 *data = NULL;
@@ -290,7 +313,7 @@ static void iwl_pnvm_load_pnvm_to_trans(struct iwl_trans *trans,
if (trans->pnvm_loaded)
goto set;
- data = iwl_get_pnvm_image(trans, &length);
+ data = iwl_get_pnvm_image(trans, &length, sku_id);
if (!data) {
trans->fail_to_parse_pnvm_image = true;
return;
@@ -300,7 +323,7 @@ static void iwl_pnvm_load_pnvm_to_trans(struct iwl_trans *trans,
if (!pnvm_data)
goto free;
- ret = iwl_pnvm_parse(trans, data, length, pnvm_data);
+ ret = iwl_pnvm_parse(trans, data, length, pnvm_data, sku_id);
if (ret) {
trans->fail_to_parse_pnvm_image = true;
goto free;
@@ -314,13 +337,14 @@ static void iwl_pnvm_load_pnvm_to_trans(struct iwl_trans *trans,
set:
iwl_trans_set_pnvm(trans, capa);
free:
- kfree(data);
+ kvfree(data);
kfree(pnvm_data);
}
static void
iwl_pnvm_load_reduce_power_to_trans(struct iwl_trans *trans,
- const struct iwl_ucode_capabilities *capa)
+ const struct iwl_ucode_capabilities *capa,
+ __le32 sku_id[3])
{
struct iwl_pnvm_image *pnvm_data = NULL;
u8 *data = NULL;
@@ -343,7 +367,8 @@ iwl_pnvm_load_reduce_power_to_trans(struct iwl_trans *trans,
if (!pnvm_data)
goto free;
- ret = iwl_uefi_reduce_power_parse(trans, data, length, pnvm_data);
+ ret = iwl_uefi_reduce_power_parse(trans, data, length, pnvm_data,
+ sku_id);
if (ret) {
trans->failed_to_load_reduce_power_image = true;
goto free;
@@ -367,18 +392,19 @@ free:
int iwl_pnvm_load(struct iwl_trans *trans,
struct iwl_notif_wait_data *notif_wait,
- const struct iwl_ucode_capabilities *capa)
+ const struct iwl_ucode_capabilities *capa,
+ __le32 sku_id[3])
{
struct iwl_notification_wait pnvm_wait;
static const u16 ntf_cmds[] = { WIDE_ID(REGULATORY_AND_NVM_GROUP,
PNVM_INIT_COMPLETE_NTFY) };
/* if the SKU_ID is empty, there's nothing to do */
- if (!trans->sku_id[0] && !trans->sku_id[1] && !trans->sku_id[2])
+ if (!sku_id[0] && !sku_id[1] && !sku_id[2])
return 0;
- iwl_pnvm_load_pnvm_to_trans(trans, capa);
- iwl_pnvm_load_reduce_power_to_trans(trans, capa);
+ iwl_pnvm_load_pnvm_to_trans(trans, capa, sku_id);
+ iwl_pnvm_load_reduce_power_to_trans(trans, capa, sku_id);
iwl_init_notification_wait(notif_wait, &pnvm_wait,
ntf_cmds, ARRAY_SIZE(ntf_cmds),
generated by cgit (git 2.34.1) at 2025-07-10 09:10:18 +0000