diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/nvm.c')
-rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/nvm.c | 145 |
1 files changed, 36 insertions, 109 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/nvm.c b/drivers/net/wireless/iwlwifi/mvm/nvm.c index 20016bcbdeab..b8ec02f89acc 100644 --- a/drivers/net/wireless/iwlwifi/mvm/nvm.c +++ b/drivers/net/wireless/iwlwifi/mvm/nvm.c @@ -22,7 +22,7 @@ * USA * * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. + * in the file called COPYING. * * Contact Information: * Intel Linux Wireless <ilw@linux.intel.com> @@ -74,26 +74,11 @@ static const int nvm_to_read[] = { NVM_SECTION_TYPE_PRODUCTION, }; -/* used to simplify the shared operations on NCM_ACCESS_CMD versions */ -union iwl_nvm_access_cmd { - struct iwl_nvm_access_cmd_ver1 ver1; - struct iwl_nvm_access_cmd_ver2 ver2; -}; -union iwl_nvm_access_resp { - struct iwl_nvm_access_resp_ver1 ver1; - struct iwl_nvm_access_resp_ver2 ver2; -}; - -static inline void iwl_nvm_fill_read_ver1(struct iwl_nvm_access_cmd_ver1 *cmd, - u16 offset, u16 length) -{ - cmd->offset = cpu_to_le16(offset); - cmd->length = cpu_to_le16(length); - cmd->cache_refresh = 1; -} +/* Default NVM size to read */ +#define IWL_NVM_DEFAULT_CHUNK_SIZE (2*1024); -static inline void iwl_nvm_fill_read_ver2(struct iwl_nvm_access_cmd_ver2 *cmd, - u16 offset, u16 length, u16 section) +static inline void iwl_nvm_fill_read(struct iwl_nvm_access_cmd *cmd, + u16 offset, u16 length, u16 section) { cmd->offset = cpu_to_le16(offset); cmd->length = cpu_to_le16(length); @@ -103,8 +88,8 @@ static inline void iwl_nvm_fill_read_ver2(struct iwl_nvm_access_cmd_ver2 *cmd, static int iwl_nvm_read_chunk(struct iwl_mvm *mvm, u16 section, u16 offset, u16 length, u8 *data) { - union iwl_nvm_access_cmd nvm_access_cmd; - union iwl_nvm_access_resp *nvm_resp; + struct iwl_nvm_access_cmd nvm_access_cmd = {}; + struct iwl_nvm_access_resp *nvm_resp; struct iwl_rx_packet *pkt; struct iwl_host_cmd cmd = { .id = NVM_ACCESS_CMD, @@ -114,18 +99,8 @@ static int iwl_nvm_read_chunk(struct iwl_mvm *mvm, u16 section, int ret, bytes_read, offset_read; u8 *resp_data; - memset(&nvm_access_cmd, 0, sizeof(nvm_access_cmd)); - - /* TODO: not sure family should be the decider, maybe FW version? */ - if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) { - iwl_nvm_fill_read_ver2(&(nvm_access_cmd.ver2), - offset, length, section); - cmd.len[0] = sizeof(struct iwl_nvm_access_cmd_ver2); - } else { - iwl_nvm_fill_read_ver1(&(nvm_access_cmd.ver1), - offset, length); - cmd.len[0] = sizeof(struct iwl_nvm_access_cmd_ver1); - } + iwl_nvm_fill_read(&nvm_access_cmd, offset, length, section); + cmd.len[0] = sizeof(struct iwl_nvm_access_cmd); ret = iwl_mvm_send_cmd(mvm, &cmd); if (ret) @@ -141,17 +116,10 @@ static int iwl_nvm_read_chunk(struct iwl_mvm *mvm, u16 section, /* Extract NVM response */ nvm_resp = (void *)pkt->data; - if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) { - ret = le16_to_cpu(nvm_resp->ver2.status); - bytes_read = le16_to_cpu(nvm_resp->ver2.length); - offset_read = le16_to_cpu(nvm_resp->ver2.offset); - resp_data = nvm_resp->ver2.data; - } else { - ret = le16_to_cpu(nvm_resp->ver1.length) <= 0; - bytes_read = le16_to_cpu(nvm_resp->ver1.length); - offset_read = le16_to_cpu(nvm_resp->ver1.offset); - resp_data = nvm_resp->ver1.data; - } + ret = le16_to_cpu(nvm_resp->status); + bytes_read = le16_to_cpu(nvm_resp->length); + offset_read = le16_to_cpu(nvm_resp->offset); + resp_data = nvm_resp->data; if (ret) { IWL_ERR(mvm, "NVM access command failed with status %d (device: %s)\n", @@ -191,17 +159,10 @@ static int iwl_nvm_read_section(struct iwl_mvm *mvm, u16 section, { u16 length, offset = 0; int ret; - bool old_eeprom = mvm->cfg->device_family != IWL_DEVICE_FAMILY_7000; - length = (iwlwifi_mod_params.amsdu_size_8K ? (8 * 1024) : (4 * 1024)) - - sizeof(union iwl_nvm_access_cmd) - - sizeof(struct iwl_rx_packet); - /* - * if length is greater than EEPROM size, truncate it because uCode - * doesn't check it by itself, and exit the loop when reached. - */ - if (old_eeprom && length > mvm->cfg->base_params->eeprom_size) - length = mvm->cfg->base_params->eeprom_size; + /* Set nvm section read length */ + length = IWL_NVM_DEFAULT_CHUNK_SIZE; + ret = length; /* Read the NVM until exhausted (reading less than requested) */ @@ -214,8 +175,6 @@ static int iwl_nvm_read_section(struct iwl_mvm *mvm, u16 section, return ret; } offset += ret; - if (old_eeprom && offset == mvm->cfg->base_params->eeprom_size) - break; } IWL_INFO(mvm, "NVM section %d read completed\n", section); @@ -249,63 +208,31 @@ int iwl_nvm_init(struct iwl_mvm *mvm) int ret, i, section; u8 *nvm_buffer, *temp; - if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) { - /* 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; - } - kfree(nvm_buffer); + /* 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) - return ret; - } else { - /* allocate eeprom */ - mvm->eeprom_blob_size = mvm->cfg->base_params->eeprom_size; - IWL_DEBUG_EEPROM(mvm->trans->dev, "NVM size = %zd\n", - mvm->eeprom_blob_size); - mvm->eeprom_blob = kzalloc(mvm->eeprom_blob_size, GFP_KERNEL); - if (!mvm->eeprom_blob) - return -ENOMEM; - - ret = iwl_nvm_read_section(mvm, 0, mvm->eeprom_blob); - if (ret != mvm->eeprom_blob_size) { - IWL_ERR(mvm, "Read partial NVM %d/%zd\n", - ret, mvm->eeprom_blob_size); - kfree(mvm->eeprom_blob); - mvm->eeprom_blob = NULL; - return -EINVAL; + 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; } + kfree(nvm_buffer); + if (ret < 0) + return ret; ret = 0; - if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) - mvm->nvm_data = iwl_parse_nvm_sections(mvm); - else - mvm->nvm_data = - iwl_parse_eeprom_data(mvm->trans->dev, - mvm->cfg, - mvm->eeprom_blob, - mvm->eeprom_blob_size); - - if (!mvm->nvm_data) { - kfree(mvm->eeprom_blob); - mvm->eeprom_blob = NULL; - ret = -ENOMEM; - } + mvm->nvm_data = iwl_parse_nvm_sections(mvm); return ret; } |