diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/nvm.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/nvm.c | 101 |
1 files changed, 67 insertions, 34 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/nvm.c b/drivers/net/wireless/iwlwifi/mvm/nvm.c index edb94ea3165..2beffd028b6 100644 --- a/drivers/net/wireless/iwlwifi/mvm/nvm.c +++ b/drivers/net/wireless/iwlwifi/mvm/nvm.c @@ -77,7 +77,7 @@ static const int nvm_to_read[] = { /* Default NVM size to read */ #define IWL_NVM_DEFAULT_CHUNK_SIZE (2*1024) -#define IWL_MAX_NVM_SECTION_SIZE 6000 +#define IWL_MAX_NVM_SECTION_SIZE 7000 #define NVM_WRITE_OPCODE 1 #define NVM_READ_OPCODE 0 @@ -259,6 +259,8 @@ iwl_parse_nvm_sections(struct iwl_mvm *mvm) #define MAX_NVM_FILE_LEN 16384 /* + * Reads external NVM from a file into mvm->nvm_sections + * * HOW TO CREATE THE NVM FILE FORMAT: * ------------------------------ * 1. create hex file, format: @@ -277,20 +279,23 @@ iwl_parse_nvm_sections(struct iwl_mvm *mvm) * * 4. save as "iNVM_xxx.bin" under /lib/firmware */ -static int iwl_mvm_load_external_nvm(struct iwl_mvm *mvm) +static int iwl_mvm_read_external_nvm(struct iwl_mvm *mvm) { - int ret, section_id, section_size; + int ret, section_size; + u16 section_id; const struct firmware *fw_entry; const struct { __le16 word1; __le16 word2; u8 data[]; } *file_sec; - const u8 *eof; + const u8 *eof, *temp; #define NVM_WORD1_LEN(x) (8 * (x & 0x03FF)) #define NVM_WORD2_ID(x) (x >> 12) + IWL_DEBUG_EEPROM(mvm->trans->dev, "Read from external NVM\n"); + /* * Obtain NVM image via request_firmware. Since we already used * request_firmware_nowait() for the firmware binary load and only @@ -362,12 +367,18 @@ static int iwl_mvm_load_external_nvm(struct iwl_mvm *mvm) break; } - ret = iwl_nvm_write_section(mvm, section_id, file_sec->data, - section_size); - if (ret < 0) { - IWL_ERR(mvm, "iwl_mvm_send_cmd failed: %d\n", ret); + temp = kmemdup(file_sec->data, section_size, GFP_KERNEL); + if (!temp) { + ret = -ENOMEM; + break; + } + if (WARN_ON(section_id >= NVM_NUM_OF_SECTIONS)) { + IWL_ERR(mvm, "Invalid NVM section ID\n"); + ret = -EINVAL; break; } + mvm->nvm_sections[section_id].data = temp; + mvm->nvm_sections[section_id].length = section_size; /* advance to the next section */ file_sec = (void *)(file_sec->data + section_size); @@ -377,6 +388,28 @@ out: return ret; } +/* Loads the NVM data stored in mvm->nvm_sections into the NIC */ +int iwl_mvm_load_nvm_to_nic(struct iwl_mvm *mvm) +{ + int i, ret; + u16 section_id; + struct iwl_nvm_section *sections = mvm->nvm_sections; + + IWL_DEBUG_EEPROM(mvm->trans->dev, "'Write to NVM\n"); + + for (i = 0; i < ARRAY_SIZE(nvm_to_read); i++) { + section_id = nvm_to_read[i]; + ret = iwl_nvm_write_section(mvm, section_id, + sections[section_id].data, + sections[section_id].length); + if (ret < 0) { + IWL_ERR(mvm, "iwl_mvm_send_cmd failed: %d\n", ret); + break; + } + } + return ret; +} + int iwl_nvm_init(struct iwl_mvm *mvm) { int ret, i, section; @@ -385,36 +418,36 @@ int iwl_nvm_init(struct iwl_mvm *mvm) /* load external NVM if configured */ if (iwlwifi_mod_params.nvm_file) { /* move to External NVM flow */ - ret = iwl_mvm_load_external_nvm(mvm); + ret = iwl_mvm_read_external_nvm(mvm); if (ret) return ret; - } - - /* Read From FW NVM */ - IWL_DEBUG_EEPROM(mvm->trans->dev, "Read from NVM\n"); - - /* TODO: find correct NVM max size for a section */ - nvm_buffer = kmalloc(mvm->cfg->base_params->eeprom_size, - GFP_KERNEL); - if (!nvm_buffer) - return -ENOMEM; - for (i = 0; i < ARRAY_SIZE(nvm_to_read); i++) { - section = nvm_to_read[i]; - /* we override the constness for initial read */ - ret = iwl_nvm_read_section(mvm, section, nvm_buffer); - if (ret < 0) - break; - temp = kmemdup(nvm_buffer, ret, GFP_KERNEL); - if (!temp) { - ret = -ENOMEM; - break; + } else { + /* Read From FW NVM */ + IWL_DEBUG_EEPROM(mvm->trans->dev, "Read from NVM\n"); + + /* TODO: find correct NVM max size for a section */ + nvm_buffer = kmalloc(mvm->cfg->base_params->eeprom_size, + GFP_KERNEL); + if (!nvm_buffer) + return -ENOMEM; + for (i = 0; i < ARRAY_SIZE(nvm_to_read); i++) { + section = nvm_to_read[i]; + /* we override the constness for initial read */ + ret = iwl_nvm_read_section(mvm, section, nvm_buffer); + if (ret < 0) + break; + temp = kmemdup(nvm_buffer, ret, GFP_KERNEL); + if (!temp) { + ret = -ENOMEM; + break; + } + mvm->nvm_sections[section].data = temp; + mvm->nvm_sections[section].length = ret; } - mvm->nvm_sections[section].data = temp; - mvm->nvm_sections[section].length = ret; + kfree(nvm_buffer); + if (ret < 0) + return ret; } - kfree(nvm_buffer); - if (ret < 0) - return ret; mvm->nvm_data = iwl_parse_nvm_sections(mvm); if (!mvm->nvm_data) |