@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
- * Copyright(c) 2020-2022 Intel Corporation
+ * Copyright(c) 2020-2023 Intel Corporation
*/
#include "iwl-drv.h"
@@ -31,17 +31,18 @@ static bool iwl_pnvm_complete_fn(struct iwl_notif_wait_data *notif_wait,
}
static int iwl_pnvm_handle_section(struct iwl_trans *trans, const u8 *data,
- size_t len)
+ size_t len,
+ struct iwl_pnvm_image *pnvm_data)
{
const struct iwl_ucode_tlv *tlv;
u32 sha1 = 0;
u16 mac_type = 0, rf_id = 0;
- struct iwl_pnvm_image pnvm_data = {};
bool hw_match = false;
- int ret;
IWL_DEBUG_FW(trans, "Handling PNVM section\n");
+ memset(pnvm_data, 0, sizeof(*pnvm_data));
+
while (len >= sizeof(*tlv)) {
u32 tlv_len, tlv_type;
@@ -73,6 +74,7 @@ static int iwl_pnvm_handle_section(struct iwl_trans *trans, const u8 *data,
IWL_DEBUG_FW(trans,
"Got IWL_UCODE_TLV_PNVM_VERSION %0x\n",
sha1);
+ pnvm_data->version = sha1;
break;
case IWL_UCODE_TLV_HW_TYPE:
if (tlv_len < 2 * sizeof(__le16)) {
@@ -110,7 +112,7 @@ static int iwl_pnvm_handle_section(struct iwl_trans *trans, const u8 *data,
break;
}
- if (pnvm_data.n_chunks == IPC_DRAM_MAP_ENTRY_NUM_MAX) {
+ if (pnvm_data->n_chunks == IPC_DRAM_MAP_ENTRY_NUM_MAX) {
IWL_DEBUG_FW(trans,
"too many payloads to allocate in DRAM.\n");
return -EINVAL;
@@ -119,9 +121,9 @@ static int iwl_pnvm_handle_section(struct iwl_trans *trans, const u8 *data,
IWL_DEBUG_FW(trans, "Adding data (size %d)\n",
data_len);
- pnvm_data.chunks[pnvm_data.n_chunks].data = section->data;
- pnvm_data.chunks[pnvm_data.n_chunks].len = data_len;
- pnvm_data.n_chunks++;
+ pnvm_data->chunks[pnvm_data->n_chunks].data = section->data;
+ pnvm_data->chunks[pnvm_data->n_chunks].len = data_len;
+ pnvm_data->n_chunks++;
break;
}
@@ -148,23 +150,17 @@ static int iwl_pnvm_handle_section(struct iwl_trans *trans, const u8 *data,
return -ENOENT;
}
- if (!pnvm_data.n_chunks) {
+ if (!pnvm_data->n_chunks) {
IWL_DEBUG_FW(trans, "Empty PNVM, skipping.\n");
return -ENOENT;
}
- ret = iwl_trans_load_pnvm(trans, &pnvm_data);
- if (ret)
- return ret;
-
- IWL_INFO(trans, "loaded PNVM version %08x\n", sha1);
-
- iwl_trans_set_pnvm(trans);
return 0;
}
static int iwl_pnvm_parse(struct iwl_trans *trans, const u8 *data,
- size_t len)
+ size_t len,
+ struct iwl_pnvm_image *pnvm_data)
{
const struct iwl_ucode_tlv *tlv;
@@ -205,7 +201,8 @@ static int iwl_pnvm_parse(struct iwl_trans *trans, const u8 *data,
trans->sku_id[2] == le32_to_cpu(sku_id->data[2])) {
int ret;
- ret = iwl_pnvm_handle_section(trans, data, len);
+ ret = iwl_pnvm_handle_section(trans, data, len,
+ pnvm_data);
if (!ret)
return 0;
} else {
@@ -248,70 +245,81 @@ 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)
+{
+ 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);
+ }
+ /* free package regardless of whether kmemdup succeeded */
+ kfree(package);
+ if (image)
+ return image;
+ }
+
+ /* If it's not available, try from the filesystem */
+ if (iwl_pnvm_get_from_fs(trans_p, &image, len))
+ return NULL;
+ return image;
+}
+
int iwl_pnvm_load(struct iwl_trans *trans,
struct iwl_notif_wait_data *notif_wait)
{
u8 *data;
- size_t len;
- struct pnvm_sku_package *package;
+ size_t length;
struct iwl_notification_wait pnvm_wait;
static const u16 ntf_cmds[] = { WIDE_ID(REGULATORY_AND_NVM_GROUP,
PNVM_INIT_COMPLETE_NTFY) };
+ struct iwl_pnvm_image pnvm_data;
int ret;
/* if the SKU_ID is empty, there's nothing to do */
if (!trans->sku_id[0] && !trans->sku_id[1] && !trans->sku_id[2])
return 0;
- /*
- * If we already loaded (or tried to load) it before, we just
- * need to set it again.
- */
- if (trans->pnvm_loaded) {
- iwl_trans_set_pnvm(trans);
- goto skip_parse;
- }
+ /* failed to get/parse the image in the past, no use to try again */
+ if (trans->fail_to_parse_pnvm_image)
+ goto reduce_tables;
- /* First attempt to get the PNVM from BIOS */
- package = iwl_uefi_get_pnvm(trans, &len);
- if (!IS_ERR_OR_NULL(package)) {
- if (len >= sizeof(*package)) {
- /* we need only the data */
- len -= sizeof(*package);
- data = kmemdup(package->data, len, GFP_KERNEL);
- } else {
- data = NULL;
+ /* get the image, parse and load it, if not loaded yet */
+ if (!trans->pnvm_loaded) {
+ data = iwl_get_pnvm_image(trans, &length);
+ if (!data) {
+ trans->fail_to_parse_pnvm_image = true;
+ goto reduce_tables;
+ }
+ ret = iwl_pnvm_parse(trans, data, length, &pnvm_data);
+ if (ret) {
+ trans->fail_to_parse_pnvm_image = true;
+ kfree(data);
+ goto reduce_tables;
}
- /* free package regardless of whether kmemdup succeeded */
- kfree(package);
-
- if (data)
- goto parse;
- }
-
- /* If it's not available, try from the filesystem */
- ret = iwl_pnvm_get_from_fs(trans, &data, &len);
- if (ret) {
- /*
- * Pretend we've loaded it - at least we've tried and
- * couldn't load it at all, so there's no point in
- * trying again over and over.
+ ret = iwl_trans_load_pnvm(trans, &pnvm_data);
+ /* can only free data after pvnm_data use, but
+ * pnvm_data.version used below is not a pointer
*/
- trans->pnvm_loaded = true;
-
- goto skip_parse;
+ kfree(data);
+ if (ret)
+ goto reduce_tables;
+ IWL_INFO(trans, "loaded PNVM version %08x\n",
+ pnvm_data.version);
}
-parse:
- iwl_pnvm_parse(trans, data, len);
-
- kfree(data);
+ iwl_trans_set_pnvm(trans);
-skip_parse:
+reduce_tables:
/* now try to get the reduce power table, if not loaded yet */
if (!trans->reduce_power_loaded) {
- data = iwl_uefi_get_reduced_power(trans, &len);
+ data = iwl_uefi_get_reduced_power(trans, &length);
if (IS_ERR_OR_NULL(data)) {
/*
* Pretend we've loaded it - at least we've tried and
@@ -320,7 +328,7 @@ int iwl_pnvm_load(struct iwl_trans *trans,
*/
trans->reduce_power_loaded = true;
} else {
- ret = iwl_trans_set_reduce_power(trans, data, len);
+ ret = iwl_trans_set_reduce_power(trans, data, length);
if (ret)
IWL_DEBUG_FW(trans,
"Failed to set reduce power table %d\n",
@@ -466,6 +466,7 @@ struct iwl_trans_rxq_dma_data {
* struct iwl_pnvm_image - contains info about the parsed pnvm image
* @chunks: array of pointers to pnvm payloads and their sizes
* @n_chunks: the number of the pnvm payloads.
+ * @version: the version of the loaded PNVM image
*/
struct iwl_pnvm_image {
struct {
@@ -473,6 +474,7 @@ struct iwl_pnvm_image {
u32 len;
} chunks[IPC_DRAM_MAP_ENTRY_NUM_MAX];
u32 n_chunks;
+ u32 version;
};
/**
@@ -1023,6 +1025,7 @@ struct iwl_trans_txqs {
* @hw_rev_step: The mac step of the HW
* @pm_support: set to true in start_hw if link pm is supported
* @ltr_enabled: set to true if the LTR is enabled
+ * @fail_to_parse_pnvm_image: set to true if pnvm parsing failed
* @wide_cmd_header: true when ucode supports wide command header format
* @wait_command_queue: wait queue for sync commands
* @num_rx_queues: number of RX queues allocated by the transport;
@@ -1070,6 +1073,7 @@ struct iwl_trans {
bool pm_support;
bool ltr_enabled;
u8 pnvm_loaded:1;
+ u8 fail_to_parse_pnvm_image:1;
u8 reduce_power_loaded:1;
const struct iwl_hcmd_arr *command_groups;