diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/nvm.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/nvm.c | 864 |
1 files changed, 0 insertions, 864 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/nvm.c b/drivers/net/wireless/iwlwifi/mvm/nvm.c deleted file mode 100644 index a26970c02..000000000 --- a/drivers/net/wireless/iwlwifi/mvm/nvm.c +++ /dev/null @@ -1,864 +0,0 @@ -/****************************************************************************** - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. - * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, - * USA - * - * The full GNU General Public License is included in this distribution - * in the file called COPYING. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - * BSD LICENSE - * - * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. - * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - *****************************************************************************/ -#include <linux/firmware.h> -#include <linux/rtnetlink.h> -#include <linux/pci.h> -#include <linux/acpi.h> -#include "iwl-trans.h" -#include "iwl-csr.h" -#include "mvm.h" -#include "iwl-eeprom-parse.h" -#include "iwl-eeprom-read.h" -#include "iwl-nvm-parse.h" -#include "iwl-prph.h" - -/* Default NVM size to read */ -#define IWL_NVM_DEFAULT_CHUNK_SIZE (2*1024) -#define IWL_MAX_NVM_SECTION_SIZE 0x1b58 -#define IWL_MAX_NVM_8000_SECTION_SIZE 0x1ffc - -#define NVM_WRITE_OPCODE 1 -#define NVM_READ_OPCODE 0 - -/* load nvm chunk response */ -enum { - READ_NVM_CHUNK_SUCCEED = 0, - READ_NVM_CHUNK_NOT_VALID_ADDRESS = 1 -}; - -/* - * prepare the NVM host command w/ the pointers to the nvm buffer - * and send it to fw - */ -static int iwl_nvm_write_chunk(struct iwl_mvm *mvm, u16 section, - u16 offset, u16 length, const u8 *data) -{ - struct iwl_nvm_access_cmd nvm_access_cmd = { - .offset = cpu_to_le16(offset), - .length = cpu_to_le16(length), - .type = cpu_to_le16(section), - .op_code = NVM_WRITE_OPCODE, - }; - struct iwl_host_cmd cmd = { - .id = NVM_ACCESS_CMD, - .len = { sizeof(struct iwl_nvm_access_cmd), length }, - .flags = CMD_SEND_IN_RFKILL, - .data = { &nvm_access_cmd, data }, - /* data may come from vmalloc, so use _DUP */ - .dataflags = { 0, IWL_HCMD_DFL_DUP }, - }; - - return iwl_mvm_send_cmd(mvm, &cmd); -} - -static int iwl_nvm_read_chunk(struct iwl_mvm *mvm, u16 section, - u16 offset, u16 length, u8 *data) -{ - struct iwl_nvm_access_cmd nvm_access_cmd = { - .offset = cpu_to_le16(offset), - .length = cpu_to_le16(length), - .type = cpu_to_le16(section), - .op_code = NVM_READ_OPCODE, - }; - struct iwl_nvm_access_resp *nvm_resp; - struct iwl_rx_packet *pkt; - struct iwl_host_cmd cmd = { - .id = NVM_ACCESS_CMD, - .flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL, - .data = { &nvm_access_cmd, }, - }; - int ret, bytes_read, offset_read; - u8 *resp_data; - - cmd.len[0] = sizeof(struct iwl_nvm_access_cmd); - - ret = iwl_mvm_send_cmd(mvm, &cmd); - if (ret) - return ret; - - pkt = cmd.resp_pkt; - - /* Extract NVM response */ - nvm_resp = (void *)pkt->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) { - if ((offset != 0) && - (ret == READ_NVM_CHUNK_NOT_VALID_ADDRESS)) { - /* - * meaning of NOT_VALID_ADDRESS: - * driver try to read chunk from address that is - * multiple of 2K and got an error since addr is empty. - * meaning of (offset != 0): driver already - * read valid data from another chunk so this case - * is not an error. - */ - IWL_DEBUG_EEPROM(mvm->trans->dev, - "NVM access command failed on offset 0x%x since that section size is multiple 2K\n", - offset); - ret = 0; - } else { - IWL_DEBUG_EEPROM(mvm->trans->dev, - "NVM access command failed with status %d (device: %s)\n", - ret, mvm->cfg->name); - ret = -EIO; - } - goto exit; - } - - if (offset_read != offset) { - IWL_ERR(mvm, "NVM ACCESS response with invalid offset %d\n", - offset_read); - ret = -EINVAL; - goto exit; - } - - /* Write data to NVM */ - memcpy(data + offset, resp_data, bytes_read); - ret = bytes_read; - -exit: - iwl_free_resp(&cmd); - return ret; -} - -static int iwl_nvm_write_section(struct iwl_mvm *mvm, u16 section, - const u8 *data, u16 length) -{ - int offset = 0; - - /* copy data in chunks of 2k (and remainder if any) */ - - while (offset < length) { - int chunk_size, ret; - - chunk_size = min(IWL_NVM_DEFAULT_CHUNK_SIZE, - length - offset); - - ret = iwl_nvm_write_chunk(mvm, section, offset, - chunk_size, data + offset); - if (ret < 0) - return ret; - - offset += chunk_size; - } - - return 0; -} - -/* - * Reads an NVM section completely. - * NICs prior to 7000 family doesn't have a real NVM, but just read - * section 0 which is the EEPROM. Because the EEPROM reading is unlimited - * by uCode, we need to manually check in this case that we don't - * overflow and try to read more than the EEPROM size. - * For 7000 family NICs, we supply the maximal size we can read, and - * the uCode fills the response with as much data as we can, - * without overflowing, so no check is needed. - */ -static int iwl_nvm_read_section(struct iwl_mvm *mvm, u16 section, - u8 *data, u32 size_read) -{ - u16 length, offset = 0; - int ret; - - /* Set nvm section read length */ - length = IWL_NVM_DEFAULT_CHUNK_SIZE; - - ret = length; - - /* Read the NVM until exhausted (reading less than requested) */ - while (ret == length) { - /* Check no memory assumptions fail and cause an overflow */ - if ((size_read + offset + length) > - mvm->cfg->base_params->eeprom_size) { - IWL_ERR(mvm, "EEPROM size is too small for NVM\n"); - return -ENOBUFS; - } - - ret = iwl_nvm_read_chunk(mvm, section, offset, length, data); - if (ret < 0) { - IWL_DEBUG_EEPROM(mvm->trans->dev, - "Cannot read NVM from section %d offset %d, length %d\n", - section, offset, length); - return ret; - } - offset += ret; - } - - IWL_DEBUG_EEPROM(mvm->trans->dev, - "NVM section %d read completed\n", section); - return offset; -} - -static struct iwl_nvm_data * -iwl_parse_nvm_sections(struct iwl_mvm *mvm) -{ - struct iwl_nvm_section *sections = mvm->nvm_sections; - const __le16 *hw, *sw, *calib, *regulatory, *mac_override, *phy_sku; - bool lar_enabled; - u32 mac_addr0, mac_addr1; - - /* Checking for required sections */ - if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) { - if (!mvm->nvm_sections[NVM_SECTION_TYPE_SW].data || - !mvm->nvm_sections[mvm->cfg->nvm_hw_section_num].data) { - IWL_ERR(mvm, "Can't parse empty OTP/NVM sections\n"); - return NULL; - } - } else { - /* SW and REGULATORY sections are mandatory */ - if (!mvm->nvm_sections[NVM_SECTION_TYPE_SW].data || - !mvm->nvm_sections[NVM_SECTION_TYPE_REGULATORY].data) { - IWL_ERR(mvm, - "Can't parse empty family 8000 OTP/NVM sections\n"); - return NULL; - } - /* MAC_OVERRIDE or at least HW section must exist */ - if (!mvm->nvm_sections[mvm->cfg->nvm_hw_section_num].data && - !mvm->nvm_sections[NVM_SECTION_TYPE_MAC_OVERRIDE].data) { - IWL_ERR(mvm, - "Can't parse mac_address, empty sections\n"); - return NULL; - } - - /* PHY_SKU section is mandatory in B0 */ - if (!mvm->nvm_sections[NVM_SECTION_TYPE_PHY_SKU].data) { - IWL_ERR(mvm, - "Can't parse phy_sku in B0, empty sections\n"); - return NULL; - } - } - - if (WARN_ON(!mvm->cfg)) - return NULL; - - /* read the mac address from WFMP registers */ - mac_addr0 = iwl_trans_read_prph(mvm->trans, WFMP_MAC_ADDR_0); - mac_addr1 = iwl_trans_read_prph(mvm->trans, WFMP_MAC_ADDR_1); - - hw = (const __le16 *)sections[mvm->cfg->nvm_hw_section_num].data; - sw = (const __le16 *)sections[NVM_SECTION_TYPE_SW].data; - calib = (const __le16 *)sections[NVM_SECTION_TYPE_CALIBRATION].data; - regulatory = (const __le16 *)sections[NVM_SECTION_TYPE_REGULATORY].data; - mac_override = - (const __le16 *)sections[NVM_SECTION_TYPE_MAC_OVERRIDE].data; - phy_sku = (const __le16 *)sections[NVM_SECTION_TYPE_PHY_SKU].data; - - lar_enabled = !iwlwifi_mod_params.lar_disable && - fw_has_capa(&mvm->fw->ucode_capa, - IWL_UCODE_TLV_CAPA_LAR_SUPPORT); - - return iwl_parse_nvm_data(mvm->trans->dev, mvm->cfg, hw, sw, calib, - regulatory, mac_override, phy_sku, - mvm->fw->valid_tx_ant, mvm->fw->valid_rx_ant, - lar_enabled, mac_addr0, mac_addr1, - mvm->trans->hw_id); -} - -#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: - * 3800 -> header - * 0000 -> header - * 5a40 -> data - * - * rev - 6 bit (word1) - * len - 10 bit (word1) - * id - 4 bit (word2) - * rsv - 12 bit (word2) - * - * 2. flip 8bits with 8 bits per line to get the right NVM file format - * - * 3. create binary file from the hex file - * - * 4. save as "iNVM_xxx.bin" under /lib/firmware - */ -static int iwl_mvm_read_external_nvm(struct iwl_mvm *mvm) -{ - 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, *temp; - int max_section_size; - const __le32 *dword_buff; - -#define NVM_WORD1_LEN(x) (8 * (x & 0x03FF)) -#define NVM_WORD2_ID(x) (x >> 12) -#define NVM_WORD2_LEN_FAMILY_8000(x) (2 * ((x & 0xFF) << 8 | x >> 8)) -#define NVM_WORD1_ID_FAMILY_8000(x) (x >> 4) -#define NVM_HEADER_0 (0x2A504C54) -#define NVM_HEADER_1 (0x4E564D2A) -#define NVM_HEADER_SIZE (4 * sizeof(u32)) - - IWL_DEBUG_EEPROM(mvm->trans->dev, "Read from external NVM\n"); - - /* Maximal size depends on HW family and step */ - if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) - max_section_size = IWL_MAX_NVM_SECTION_SIZE; - else - max_section_size = IWL_MAX_NVM_8000_SECTION_SIZE; - - /* - * Obtain NVM image via request_firmware. Since we already used - * reject_firmware_nowait() for the firmware binary load and only - * get here after that we assume the NVM request can be satisfied - * synchronously. - */ - ret = reject_firmware(&fw_entry, mvm->nvm_file_name, - mvm->trans->dev); - if (ret) { - IWL_ERR(mvm, "ERROR: %s isn't available %d\n", - mvm->nvm_file_name, ret); - return ret; - } - - IWL_INFO(mvm, "Loaded NVM file %s (%zu bytes)\n", - mvm->nvm_file_name, fw_entry->size); - - if (fw_entry->size > MAX_NVM_FILE_LEN) { - IWL_ERR(mvm, "NVM file too large\n"); - ret = -EINVAL; - goto out; - } - - eof = fw_entry->data + fw_entry->size; - dword_buff = (__le32 *)fw_entry->data; - - /* some NVM file will contain a header. - * The header is identified by 2 dwords header as follow: - * dword[0] = 0x2A504C54 - * dword[1] = 0x4E564D2A - * - * This header must be skipped when providing the NVM data to the FW. - */ - if (fw_entry->size > NVM_HEADER_SIZE && - dword_buff[0] == cpu_to_le32(NVM_HEADER_0) && - dword_buff[1] == cpu_to_le32(NVM_HEADER_1)) { - file_sec = (void *)(fw_entry->data + NVM_HEADER_SIZE); - IWL_INFO(mvm, "NVM Version %08X\n", le32_to_cpu(dword_buff[2])); - IWL_INFO(mvm, "NVM Manufacturing date %08X\n", - le32_to_cpu(dword_buff[3])); - - /* nvm file validation, dword_buff[2] holds the file version */ - if ((CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_C_STEP && - le32_to_cpu(dword_buff[2]) < 0xE4A) || - (CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP && - le32_to_cpu(dword_buff[2]) >= 0xE4A)) { - ret = -EFAULT; - goto out; - } - } else { - file_sec = (void *)fw_entry->data; - } - - while (true) { - if (file_sec->data > eof) { - IWL_ERR(mvm, - "ERROR - NVM file too short for section header\n"); - ret = -EINVAL; - break; - } - - /* check for EOF marker */ - if (!file_sec->word1 && !file_sec->word2) { - ret = 0; - break; - } - - if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) { - section_size = - 2 * NVM_WORD1_LEN(le16_to_cpu(file_sec->word1)); - section_id = NVM_WORD2_ID(le16_to_cpu(file_sec->word2)); - } else { - section_size = 2 * NVM_WORD2_LEN_FAMILY_8000( - le16_to_cpu(file_sec->word2)); - section_id = NVM_WORD1_ID_FAMILY_8000( - le16_to_cpu(file_sec->word1)); - } - - if (section_size > max_section_size) { - IWL_ERR(mvm, "ERROR - section too large (%d)\n", - section_size); - ret = -EINVAL; - break; - } - - if (!section_size) { - IWL_ERR(mvm, "ERROR - section empty\n"); - ret = -EINVAL; - break; - } - - if (file_sec->data + section_size > eof) { - IWL_ERR(mvm, - "ERROR - NVM file too short for section (%d bytes)\n", - section_size); - ret = -EINVAL; - break; - } - - if (WARN(section_id >= NVM_MAX_NUM_SECTIONS, - "Invalid NVM section ID %d\n", section_id)) { - ret = -EINVAL; - break; - } - - temp = kmemdup(file_sec->data, section_size, GFP_KERNEL); - if (!temp) { - ret = -ENOMEM; - break; - } - kfree(mvm->nvm_sections[section_id].data); - 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); - } -out: - release_firmware(fw_entry); - 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 = 0; - struct iwl_nvm_section *sections = mvm->nvm_sections; - - IWL_DEBUG_EEPROM(mvm->trans->dev, "'Write to NVM\n"); - - for (i = 0; i < ARRAY_SIZE(mvm->nvm_sections); i++) { - if (!mvm->nvm_sections[i].data || !mvm->nvm_sections[i].length) - continue; - ret = iwl_nvm_write_section(mvm, i, sections[i].data, - sections[i].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, bool read_nvm_from_nic) -{ - int ret, section; - u32 size_read = 0; - u8 *nvm_buffer, *temp; - const char *nvm_file_B = mvm->cfg->default_nvm_file_B_step; - const char *nvm_file_C = mvm->cfg->default_nvm_file_C_step; - - if (WARN_ON_ONCE(mvm->cfg->nvm_hw_section_num >= NVM_MAX_NUM_SECTIONS)) - return -EINVAL; - - /* load NVM values from nic */ - if (read_nvm_from_nic) { - /* Read From FW NVM */ - IWL_DEBUG_EEPROM(mvm->trans->dev, "Read from NVM\n"); - - nvm_buffer = kmalloc(mvm->cfg->base_params->eeprom_size, - GFP_KERNEL); - if (!nvm_buffer) - return -ENOMEM; - for (section = 0; section < NVM_MAX_NUM_SECTIONS; section++) { - /* we override the constness for initial read */ - ret = iwl_nvm_read_section(mvm, section, nvm_buffer, - size_read); - if (ret < 0) - continue; - size_read += ret; - temp = kmemdup(nvm_buffer, ret, GFP_KERNEL); - if (!temp) { - ret = -ENOMEM; - break; - } - mvm->nvm_sections[section].data = temp; - mvm->nvm_sections[section].length = ret; - -#ifdef CONFIG_IWLWIFI_DEBUGFS - switch (section) { - case NVM_SECTION_TYPE_SW: - mvm->nvm_sw_blob.data = temp; - mvm->nvm_sw_blob.size = ret; - break; - case NVM_SECTION_TYPE_CALIBRATION: - mvm->nvm_calib_blob.data = temp; - mvm->nvm_calib_blob.size = ret; - break; - case NVM_SECTION_TYPE_PRODUCTION: - mvm->nvm_prod_blob.data = temp; - mvm->nvm_prod_blob.size = ret; - break; - case NVM_SECTION_TYPE_PHY_SKU: - mvm->nvm_phy_sku_blob.data = temp; - mvm->nvm_phy_sku_blob.size = ret; - break; - default: - if (section == mvm->cfg->nvm_hw_section_num) { - mvm->nvm_hw_blob.data = temp; - mvm->nvm_hw_blob.size = ret; - break; - } - } -#endif - } - if (!size_read) - IWL_ERR(mvm, "OTP is blank\n"); - kfree(nvm_buffer); - } - - /* Only if PNVM selected in the mod param - load external NVM */ - if (mvm->nvm_file_name) { - /* read External NVM file from the mod param */ - ret = iwl_mvm_read_external_nvm(mvm); - if (ret) { - /* choose the nvm_file name according to the - * HW step - */ - if (CSR_HW_REV_STEP(mvm->trans->hw_rev) == - SILICON_B_STEP) - mvm->nvm_file_name = nvm_file_B; - else - mvm->nvm_file_name = nvm_file_C; - - if (ret == -EFAULT && mvm->nvm_file_name) { - /* in case nvm file was failed try again */ - ret = iwl_mvm_read_external_nvm(mvm); - if (ret) - return ret; - } else { - return ret; - } - } - } - - /* parse the relevant nvm sections */ - mvm->nvm_data = iwl_parse_nvm_sections(mvm); - if (!mvm->nvm_data) - return -ENODATA; - IWL_DEBUG_EEPROM(mvm->trans->dev, "nvm version = %x\n", - mvm->nvm_data->nvm_version); - - return 0; -} - -struct iwl_mcc_update_resp * -iwl_mvm_update_mcc(struct iwl_mvm *mvm, const char *alpha2, - enum iwl_mcc_source src_id) -{ - struct iwl_mcc_update_cmd mcc_update_cmd = { - .mcc = cpu_to_le16(alpha2[0] << 8 | alpha2[1]), - .source_id = (u8)src_id, - }; - struct iwl_mcc_update_resp *mcc_resp, *resp_cp = NULL; - struct iwl_rx_packet *pkt; - struct iwl_host_cmd cmd = { - .id = MCC_UPDATE_CMD, - .flags = CMD_WANT_SKB, - .data = { &mcc_update_cmd }, - }; - - int ret; - u32 status; - int resp_len, n_channels; - u16 mcc; - - if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm))) - return ERR_PTR(-EOPNOTSUPP); - - cmd.len[0] = sizeof(struct iwl_mcc_update_cmd); - - IWL_DEBUG_LAR(mvm, "send MCC update to FW with '%c%c' src = %d\n", - alpha2[0], alpha2[1], src_id); - - ret = iwl_mvm_send_cmd(mvm, &cmd); - if (ret) - return ERR_PTR(ret); - - pkt = cmd.resp_pkt; - - /* Extract MCC response */ - mcc_resp = (void *)pkt->data; - status = le32_to_cpu(mcc_resp->status); - - mcc = le16_to_cpu(mcc_resp->mcc); - - /* W/A for a FW/NVM issue - returns 0x00 for the world domain */ - if (mcc == 0) { - mcc = 0x3030; /* "00" - world */ - mcc_resp->mcc = cpu_to_le16(mcc); - } - - n_channels = __le32_to_cpu(mcc_resp->n_channels); - IWL_DEBUG_LAR(mvm, - "MCC response status: 0x%x. new MCC: 0x%x ('%c%c') change: %d n_chans: %d\n", - status, mcc, mcc >> 8, mcc & 0xff, - !!(status == MCC_RESP_NEW_CHAN_PROFILE), n_channels); - - resp_len = sizeof(*mcc_resp) + n_channels * sizeof(__le32); - resp_cp = kmemdup(mcc_resp, resp_len, GFP_KERNEL); - if (!resp_cp) { - ret = -ENOMEM; - goto exit; - } - - ret = 0; -exit: - iwl_free_resp(&cmd); - if (ret) - return ERR_PTR(ret); - return resp_cp; -} - -#ifdef CONFIG_ACPI -#define WRD_METHOD "WRDD" -#define WRDD_WIFI (0x07) -#define WRDD_WIGIG (0x10) - -static u32 iwl_mvm_wrdd_get_mcc(struct iwl_mvm *mvm, union acpi_object *wrdd) -{ - union acpi_object *mcc_pkg, *domain_type, *mcc_value; - u32 i; - - if (wrdd->type != ACPI_TYPE_PACKAGE || - wrdd->package.count < 2 || - wrdd->package.elements[0].type != ACPI_TYPE_INTEGER || - wrdd->package.elements[0].integer.value != 0) { - IWL_DEBUG_LAR(mvm, "Unsupported wrdd structure\n"); - return 0; - } - - for (i = 1 ; i < wrdd->package.count ; ++i) { - mcc_pkg = &wrdd->package.elements[i]; - - if (mcc_pkg->type != ACPI_TYPE_PACKAGE || - mcc_pkg->package.count < 2 || - mcc_pkg->package.elements[0].type != ACPI_TYPE_INTEGER || - mcc_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) { - mcc_pkg = NULL; - continue; - } - - domain_type = &mcc_pkg->package.elements[0]; - if (domain_type->integer.value == WRDD_WIFI) - break; - - mcc_pkg = NULL; - } - - if (mcc_pkg) { - mcc_value = &mcc_pkg->package.elements[1]; - return mcc_value->integer.value; - } - - return 0; -} - -static int iwl_mvm_get_bios_mcc(struct iwl_mvm *mvm, char *mcc) -{ - acpi_handle root_handle; - acpi_handle handle; - struct acpi_buffer wrdd = {ACPI_ALLOCATE_BUFFER, NULL}; - acpi_status status; - u32 mcc_val; - struct pci_dev *pdev = to_pci_dev(mvm->dev); - - root_handle = ACPI_HANDLE(&pdev->dev); - if (!root_handle) { - IWL_DEBUG_LAR(mvm, - "Could not retrieve root port ACPI handle\n"); - return -ENOENT; - } - - /* Get the method's handle */ - status = acpi_get_handle(root_handle, (acpi_string)WRD_METHOD, &handle); - if (ACPI_FAILURE(status)) { - IWL_DEBUG_LAR(mvm, "WRD method not found\n"); - return -ENOENT; - } - - /* Call WRDD with no arguments */ - status = acpi_evaluate_object(handle, NULL, NULL, &wrdd); - if (ACPI_FAILURE(status)) { - IWL_DEBUG_LAR(mvm, "WRDC invocation failed (0x%x)\n", status); - return -ENOENT; - } - - mcc_val = iwl_mvm_wrdd_get_mcc(mvm, wrdd.pointer); - kfree(wrdd.pointer); - if (!mcc_val) - return -ENOENT; - - mcc[0] = (mcc_val >> 8) & 0xff; - mcc[1] = mcc_val & 0xff; - mcc[2] = '\0'; - return 0; -} -#else /* CONFIG_ACPI */ -static int iwl_mvm_get_bios_mcc(struct iwl_mvm *mvm, char *mcc) -{ - return -ENOENT; -} -#endif - -int iwl_mvm_init_mcc(struct iwl_mvm *mvm) -{ - bool tlv_lar; - bool nvm_lar; - int retval; - struct ieee80211_regdomain *regd; - char mcc[3]; - - if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000) { - tlv_lar = fw_has_capa(&mvm->fw->ucode_capa, - IWL_UCODE_TLV_CAPA_LAR_SUPPORT); - nvm_lar = mvm->nvm_data->lar_enabled; - if (tlv_lar != nvm_lar) - IWL_INFO(mvm, - "Conflict between TLV & NVM regarding enabling LAR (TLV = %s NVM =%s)\n", - tlv_lar ? "enabled" : "disabled", - nvm_lar ? "enabled" : "disabled"); - } - - if (!iwl_mvm_is_lar_supported(mvm)) - return 0; - - /* - * try to replay the last set MCC to FW. If it doesn't exist, - * queue an update to cfg80211 to retrieve the default alpha2 from FW. - */ - retval = iwl_mvm_init_fw_regd(mvm); - if (retval != -ENOENT) - return retval; - - /* - * Driver regulatory hint for initial update, this also informs the - * firmware we support wifi location updates. - * Disallow scans that might crash the FW while the LAR regdomain - * is not set. - */ - mvm->lar_regdom_set = false; - - regd = iwl_mvm_get_current_regdomain(mvm, NULL); - if (IS_ERR_OR_NULL(regd)) - return -EIO; - - if (iwl_mvm_is_wifi_mcc_supported(mvm) && - !iwl_mvm_get_bios_mcc(mvm, mcc)) { - kfree(regd); - regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, mcc, - MCC_SOURCE_BIOS, NULL); - if (IS_ERR_OR_NULL(regd)) - return -EIO; - } - - retval = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd); - kfree(regd); - return retval; -} - -void iwl_mvm_rx_chub_update_mcc(struct iwl_mvm *mvm, - struct iwl_rx_cmd_buffer *rxb) -{ - struct iwl_rx_packet *pkt = rxb_addr(rxb); - struct iwl_mcc_chub_notif *notif = (void *)pkt->data; - enum iwl_mcc_source src; - char mcc[3]; - struct ieee80211_regdomain *regd; - - lockdep_assert_held(&mvm->mutex); - - if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm))) - return; - - mcc[0] = notif->mcc >> 8; - mcc[1] = notif->mcc & 0xff; - mcc[2] = '\0'; - src = notif->source_id; - - IWL_DEBUG_LAR(mvm, - "RX: received chub update mcc cmd (mcc '%s' src %d)\n", - mcc, src); - regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, mcc, src, NULL); - if (IS_ERR_OR_NULL(regd)) - return; - - regulatory_set_wiphy_regd(mvm->hw->wiphy, regd); - kfree(regd); -} |