diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw/pnvm.c')
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/pnvm.c | 234 |
1 files changed, 138 insertions, 96 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c b/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c index c6f2672fdc73..650e4bde9c17 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) 2020-2022 Intel Corporation + * Copyright(c) 2020-2023 Intel Corporation */ #include "iwl-drv.h" @@ -31,18 +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; - u8 *pnvm_data = NULL, *tmp; bool hw_match = false; - u32 size = 0; - 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; @@ -55,8 +55,7 @@ static int iwl_pnvm_handle_section(struct iwl_trans *trans, const u8 *data, if (len < tlv_len) { IWL_ERR(trans, "invalid TLV len: %zd/%u\n", len, tlv_len); - ret = -EINVAL; - goto out; + return -EINVAL; } data += sizeof(*tlv); @@ -75,6 +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)) { @@ -112,26 +112,26 @@ static int iwl_pnvm_handle_section(struct iwl_trans *trans, const u8 *data, break; } - IWL_DEBUG_FW(trans, "Adding data (size %d)\n", - data_len); - - tmp = krealloc(pnvm_data, size + data_len, GFP_KERNEL); - if (!tmp) { + if (pnvm_data->n_chunks == IPC_DRAM_MAP_ENTRY_NUM_MAX) { IWL_DEBUG_FW(trans, - "Couldn't allocate (more) pnvm_data\n"); - - ret = -ENOMEM; - goto out; + "too many payloads to allocate in DRAM.\n"); + return -EINVAL; } - pnvm_data = tmp; - - memcpy(pnvm_data + size, section->data, data_len); + IWL_DEBUG_FW(trans, "Adding data (size %d)\n", + data_len); - size += 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++; break; } + case IWL_UCODE_TLV_MEM_DESC: + if (iwl_uefi_handle_tlv_mem_desc(trans, data, tlv_len, + pnvm_data)) + return -EINVAL; + break; case IWL_UCODE_TLV_PNVM_SKU: IWL_DEBUG_FW(trans, "New PNVM section started, stop parsing.\n"); @@ -152,26 +152,20 @@ done: "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)); - ret = -ENOENT; - goto out; + return -ENOENT; } - if (!size) { + if (!pnvm_data->n_chunks) { IWL_DEBUG_FW(trans, "Empty PNVM, skipping.\n"); - ret = -ENOENT; - goto out; + return -ENOENT; } - IWL_INFO(trans, "loaded PNVM version %08x\n", sha1); - - ret = iwl_trans_set_pnvm(trans, pnvm_data, size); -out: - kfree(pnvm_data); - return ret; + 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; @@ -212,7 +206,8 @@ 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 { @@ -255,89 +250,136 @@ static int iwl_pnvm_get_from_fs(struct iwl_trans *trans, u8 **data, size_t *len) return 0; } -int iwl_pnvm_load(struct iwl_trans *trans, - struct iwl_notif_wait_data *notif_wait) +static u8 *iwl_get_pnvm_image(struct iwl_trans *trans_p, size_t *len) { - u8 *data; - size_t len; struct pnvm_sku_package *package; - struct iwl_notification_wait pnvm_wait; - static const u16 ntf_cmds[] = { WIDE_ID(REGULATORY_AND_NVM_GROUP, - PNVM_INIT_COMPLETE_NTFY) }; - 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) { - ret = iwl_trans_set_pnvm(trans, NULL, 0); - if (ret) - return ret; - goto skip_parse; - } + u8 *image = NULL; /* First attempt to get the PNVM from BIOS */ - package = iwl_uefi_get_pnvm(trans, &len); + package = iwl_uefi_get_pnvm(trans_p, len); if (!IS_ERR_OR_NULL(package)) { - if (len >= sizeof(*package)) { + if (*len >= sizeof(*package)) { /* we need only the data */ - len -= sizeof(*package); - data = kmemdup(package->data, len, GFP_KERNEL); - } else { - data = NULL; + *len -= sizeof(*package); + image = kmemdup(package->data, *len, GFP_KERNEL); } - /* free package regardless of whether kmemdup succeeded */ kfree(package); - - if (data) - goto parse; + if (image) + return image; } /* If it's not available, try from the filesystem */ - ret = iwl_pnvm_get_from_fs(trans, &data, &len); + 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) +{ + struct iwl_pnvm_image *pnvm_data = NULL; + u8 *data = NULL; + size_t length; + int ret; + + /* failed to get/parse the image in the past, no use trying again */ + if (trans->fail_to_parse_pnvm_image) + return; + + if (trans->pnvm_loaded) + goto set; + + data = iwl_get_pnvm_image(trans, &length); + if (!data) { + trans->fail_to_parse_pnvm_image = true; + return; + } + + pnvm_data = kzalloc(sizeof(*pnvm_data), GFP_KERNEL); + if (!pnvm_data) + goto free; + + ret = iwl_pnvm_parse(trans, data, length, pnvm_data); 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. - */ - trans->pnvm_loaded = true; - - goto skip_parse; + trans->fail_to_parse_pnvm_image = true; + goto free; } -parse: - iwl_pnvm_parse(trans, data, len); + ret = iwl_trans_load_pnvm(trans, pnvm_data, capa); + if (ret) + goto free; + IWL_INFO(trans, "loaded PNVM version %08x\n", pnvm_data->version); +set: + iwl_trans_set_pnvm(trans, capa); +free: kfree(data); + kfree(pnvm_data); +} -skip_parse: - /* 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); - if (IS_ERR_OR_NULL(data)) { - /* - * 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->reduce_power_loaded = true; - } else { - ret = iwl_trans_set_reduce_power(trans, data, len); - if (ret) - IWL_DEBUG_FW(trans, - "Failed to set reduce power table %d\n", - ret); - kfree(data); - } +static void +iwl_pnvm_load_reduce_power_to_trans(struct iwl_trans *trans, + const struct iwl_ucode_capabilities *capa) +{ + struct iwl_pnvm_image *pnvm_data = NULL; + u8 *data = NULL; + size_t length; + int ret; + + if (trans->failed_to_load_reduce_power_image) + return; + + if (trans->reduce_power_loaded) + goto set; + + data = iwl_uefi_get_reduced_power(trans, &length); + if (IS_ERR(data)) { + trans->failed_to_load_reduce_power_image = true; + return; } + pnvm_data = kzalloc(sizeof(*pnvm_data), GFP_KERNEL); + if (!pnvm_data) + goto free; + + ret = iwl_uefi_reduce_power_parse(trans, data, length, pnvm_data); + if (ret) { + trans->failed_to_load_reduce_power_image = true; + goto free; + } + + ret = iwl_trans_load_reduce_power(trans, pnvm_data, capa); + if (ret) { + IWL_DEBUG_FW(trans, + "Failed to load reduce power table %d\n", + ret); + trans->failed_to_load_reduce_power_image = true; + goto free; + } + +set: + iwl_trans_set_reduce_power(trans, capa); +free: + kfree(data); + kfree(pnvm_data); +} + +int iwl_pnvm_load(struct iwl_trans *trans, + struct iwl_notif_wait_data *notif_wait, + const struct iwl_ucode_capabilities *capa) +{ + 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]) + return 0; + + iwl_pnvm_load_pnvm_to_trans(trans, capa); + iwl_pnvm_load_reduce_power_to_trans(trans, capa); + iwl_init_notification_wait(notif_wait, &pnvm_wait, ntf_cmds, ARRAY_SIZE(ntf_cmds), iwl_pnvm_complete_fn, trans); 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