From: Luca Coelho <[email protected]>
In preparation to support loading the PNVM from UEFI, move the
function that loads the PNVM from the filesystem to a separate
function. This will make it easier to try to load from both places
later on.
Signed-off-by: Luca Coelho <[email protected]>
---
drivers/net/wireless/intel/iwlwifi/fw/pnvm.c | 98 ++++++++++++--------
1 file changed, 61 insertions(+), 37 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c b/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c
index 37ce4fe136c5..d515af8c1686 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c
@@ -1,9 +1,7 @@
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
-/******************************************************************************
- *
- * Copyright(c) 2020 Intel Corporation
- *
- *****************************************************************************/
+/*
+ * Copyright(c) 2020-2021 Intel Corporation
+ */
#include "iwl-drv.h"
#include "pnvm.h"
@@ -221,9 +219,44 @@ static int iwl_pnvm_parse(struct iwl_trans *trans, const u8 *data,
return -ENOENT;
}
+static int iwl_pnvm_get_from_fs(struct iwl_trans *trans, u8 **data, size_t *len)
+{
+ const struct firmware *pnvm;
+ char pnvm_name[64];
+ int ret;
+
+ /*
+ * The prefix unfortunately includes a hyphen at the end, so
+ * don't add the dot here...
+ */
+ snprintf(pnvm_name, sizeof(pnvm_name), "%spnvm",
+ trans->cfg->fw_name_pre);
+
+ /* ...but replace the hyphen with the dot here. */
+ if (strlen(trans->cfg->fw_name_pre) < sizeof(pnvm_name))
+ pnvm_name[strlen(trans->cfg->fw_name_pre) - 1] = '.';
+
+ ret = firmware_request_nowarn(&pnvm, pnvm_name, trans->dev);
+ if (ret) {
+ IWL_DEBUG_FW(trans, "PNVM file %s not found %d\n",
+ pnvm_name, ret);
+ return ret;
+ }
+
+ *data = kmemdup(pnvm->data, pnvm->size, GFP_KERNEL);
+ if (!*data)
+ return -ENOMEM;
+
+ *len = pnvm->size;
+
+ return 0;
+}
+
int iwl_pnvm_load(struct iwl_trans *trans,
struct iwl_notif_wait_data *notif_wait)
{
+ u8 *data;
+ size_t len;
struct iwl_notification_wait pnvm_wait;
static const u16 ntf_cmds[] = { WIDE_ID(REGULATORY_AND_NVM_GROUP,
PNVM_INIT_COMPLETE_NTFY) };
@@ -233,44 +266,35 @@ int iwl_pnvm_load(struct iwl_trans *trans,
if (!trans->sku_id[0] && !trans->sku_id[1] && !trans->sku_id[2])
return 0;
- /* load from disk only if we haven't done it (or tried) before */
- if (!trans->pnvm_loaded) {
- const struct firmware *pnvm;
- char pnvm_name[64];
+ /*
+ * If we already loaded (or tried to load) it before, we just
+ * need to set it again.
+ */
+ if (trans->pnvm_loaded) {
+ ret = iwl_trans_set_pnvm(trans, NULL, 0);
+ if (ret)
+ return ret;
+ goto skip_parse;
+ }
+ /* Try to load the PNVM from the filesystem */
+ ret = iwl_pnvm_get_from_fs(trans, &data, &len);
+ if (ret) {
/*
- * The prefix unfortunately includes a hyphen at the end, so
- * don't add the dot here...
+ * 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.
*/
- snprintf(pnvm_name, sizeof(pnvm_name), "%spnvm",
- trans->cfg->fw_name_pre);
-
- /* ...but replace the hyphen with the dot here. */
- if (strlen(trans->cfg->fw_name_pre) < sizeof(pnvm_name))
- pnvm_name[strlen(trans->cfg->fw_name_pre) - 1] = '.';
-
- ret = firmware_request_nowarn(&pnvm, pnvm_name, trans->dev);
- if (ret) {
- IWL_DEBUG_FW(trans, "PNVM file %s not found %d\n",
- pnvm_name, 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.
- */
- trans->pnvm_loaded = true;
- } else {
- iwl_pnvm_parse(trans, pnvm->data, pnvm->size);
+ trans->pnvm_loaded = true;
- release_firmware(pnvm);
- }
- } else {
- /* if we already loaded, we need to set it again */
- ret = iwl_trans_set_pnvm(trans, NULL, 0);
- if (ret)
- return ret;
+ goto skip_parse;
}
+ iwl_pnvm_parse(trans, data, len);
+
+ kfree(data);
+
+skip_parse:
iwl_init_notification_wait(notif_wait, &pnvm_wait,
ntf_cmds, ARRAY_SIZE(ntf_cmds),
iwl_pnvm_complete_fn, trans);
--
2.30.0