diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/net/wireless/ath/carl9170/fw.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/net/wireless/ath/carl9170/fw.c | 429 |
1 files changed, 0 insertions, 429 deletions
diff --git a/ANDROID_3.4.5/drivers/net/wireless/ath/carl9170/fw.c b/ANDROID_3.4.5/drivers/net/wireless/ath/carl9170/fw.c deleted file mode 100644 index cffde8d9..00000000 --- a/ANDROID_3.4.5/drivers/net/wireless/ath/carl9170/fw.c +++ /dev/null @@ -1,429 +0,0 @@ -/* - * Atheros CARL9170 driver - * - * firmware parser - * - * Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * 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; see the file COPYING. If not, see - * http://www.gnu.org/licenses/. - */ - -#include <linux/kernel.h> -#include <linux/firmware.h> -#include <linux/crc32.h> -#include <linux/module.h> -#include "carl9170.h" -#include "fwcmd.h" -#include "version.h" - -#define MAKE_STR(symbol) #symbol -#define TO_STR(symbol) MAKE_STR(symbol) -#define CARL9170FW_API_VER_STR TO_STR(CARL9170FW_API_MAX_VER) -MODULE_VERSION(CARL9170FW_API_VER_STR ":" CARL9170FW_VERSION_GIT); - -static const u8 otus_magic[4] = { OTUS_MAGIC }; - -static const void *carl9170_fw_find_desc(struct ar9170 *ar, const u8 descid[4], - const unsigned int len, const u8 compatible_revision) -{ - const struct carl9170fw_desc_head *iter; - - carl9170fw_for_each_hdr(iter, ar->fw.desc) { - if (carl9170fw_desc_cmp(iter, descid, len, - compatible_revision)) - return (void *)iter; - } - - /* needed to find the LAST desc */ - if (carl9170fw_desc_cmp(iter, descid, len, - compatible_revision)) - return (void *)iter; - - return NULL; -} - -static int carl9170_fw_verify_descs(struct ar9170 *ar, - const struct carl9170fw_desc_head *head, unsigned int max_len) -{ - const struct carl9170fw_desc_head *pos; - unsigned long pos_addr, end_addr; - unsigned int pos_length; - - if (max_len < sizeof(*pos)) - return -ENODATA; - - max_len = min_t(unsigned int, CARL9170FW_DESC_MAX_LENGTH, max_len); - - pos = head; - pos_addr = (unsigned long) pos; - end_addr = pos_addr + max_len; - - while (pos_addr < end_addr) { - if (pos_addr + sizeof(*head) > end_addr) - return -E2BIG; - - pos_length = le16_to_cpu(pos->length); - - if (pos_length < sizeof(*head)) - return -EBADMSG; - - if (pos_length > max_len) - return -EOVERFLOW; - - if (pos_addr + pos_length > end_addr) - return -EMSGSIZE; - - if (carl9170fw_desc_cmp(pos, LAST_MAGIC, - CARL9170FW_LAST_DESC_SIZE, - CARL9170FW_LAST_DESC_CUR_VER)) - return 0; - - pos_addr += pos_length; - pos = (void *)pos_addr; - max_len -= pos_length; - } - return -EINVAL; -} - -static void carl9170_fw_info(struct ar9170 *ar) -{ - const struct carl9170fw_motd_desc *motd_desc; - unsigned int str_ver_len; - u32 fw_date; - - dev_info(&ar->udev->dev, "driver API: %s 2%03d-%02d-%02d [%d-%d]\n", - CARL9170FW_VERSION_GIT, CARL9170FW_VERSION_YEAR, - CARL9170FW_VERSION_MONTH, CARL9170FW_VERSION_DAY, - CARL9170FW_API_MIN_VER, CARL9170FW_API_MAX_VER); - - motd_desc = carl9170_fw_find_desc(ar, MOTD_MAGIC, - sizeof(*motd_desc), CARL9170FW_MOTD_DESC_CUR_VER); - - if (motd_desc) { - str_ver_len = strnlen(motd_desc->release, - CARL9170FW_MOTD_RELEASE_LEN); - - fw_date = le32_to_cpu(motd_desc->fw_year_month_day); - - dev_info(&ar->udev->dev, "firmware API: %.*s 2%03d-%02d-%02d\n", - str_ver_len, motd_desc->release, - CARL9170FW_GET_YEAR(fw_date), - CARL9170FW_GET_MONTH(fw_date), - CARL9170FW_GET_DAY(fw_date)); - - strlcpy(ar->hw->wiphy->fw_version, motd_desc->release, - sizeof(ar->hw->wiphy->fw_version)); - } -} - -static bool valid_dma_addr(const u32 address) -{ - if (address >= AR9170_SRAM_OFFSET && - address < (AR9170_SRAM_OFFSET + AR9170_SRAM_SIZE)) - return true; - - return false; -} - -static bool valid_cpu_addr(const u32 address) -{ - if (valid_dma_addr(address) || (address >= AR9170_PRAM_OFFSET && - address < (AR9170_PRAM_OFFSET + AR9170_PRAM_SIZE))) - return true; - - return false; -} - -static int carl9170_fw_checksum(struct ar9170 *ar, const __u8 *data, - size_t len) -{ - const struct carl9170fw_otus_desc *otus_desc; - const struct carl9170fw_last_desc *last_desc; - const struct carl9170fw_chk_desc *chk_desc; - unsigned long fin, diff; - unsigned int dsc_len; - u32 crc32; - - last_desc = carl9170_fw_find_desc(ar, LAST_MAGIC, - sizeof(*last_desc), CARL9170FW_LAST_DESC_CUR_VER); - if (!last_desc) - return -EINVAL; - - otus_desc = carl9170_fw_find_desc(ar, OTUS_MAGIC, - sizeof(*otus_desc), CARL9170FW_OTUS_DESC_CUR_VER); - if (!otus_desc) { - dev_err(&ar->udev->dev, "failed to find compatible firmware " - "descriptor.\n"); - return -ENODATA; - } - - chk_desc = carl9170_fw_find_desc(ar, CHK_MAGIC, - sizeof(*chk_desc), CARL9170FW_CHK_DESC_CUR_VER); - - if (!chk_desc) { - dev_warn(&ar->udev->dev, "Unprotected firmware image.\n"); - return 0; - } - - dsc_len = min_t(unsigned int, len, - (unsigned long)chk_desc - (unsigned long)otus_desc); - - fin = (unsigned long) last_desc + sizeof(*last_desc); - diff = fin - (unsigned long) otus_desc; - - if (diff < len) - len -= diff; - - if (len < 256) - return -EIO; - - crc32 = crc32_le(~0, data, len); - if (cpu_to_le32(crc32) != chk_desc->fw_crc32) { - dev_err(&ar->udev->dev, "fw checksum test failed.\n"); - return -ENOEXEC; - } - - crc32 = crc32_le(crc32, (void *)otus_desc, dsc_len); - if (cpu_to_le32(crc32) != chk_desc->hdr_crc32) { - dev_err(&ar->udev->dev, "descriptor check failed.\n"); - return -EINVAL; - } - return 0; -} - -static int carl9170_fw_tx_sequence(struct ar9170 *ar) -{ - const struct carl9170fw_txsq_desc *txsq_desc; - - txsq_desc = carl9170_fw_find_desc(ar, TXSQ_MAGIC, sizeof(*txsq_desc), - CARL9170FW_TXSQ_DESC_CUR_VER); - if (txsq_desc) { - ar->fw.tx_seq_table = le32_to_cpu(txsq_desc->seq_table_addr); - if (!valid_cpu_addr(ar->fw.tx_seq_table)) - return -EINVAL; - } else { - ar->fw.tx_seq_table = 0; - } - - return 0; -} - -static int carl9170_fw(struct ar9170 *ar, const __u8 *data, size_t len) -{ - const struct carl9170fw_otus_desc *otus_desc; - int err; - u16 if_comb_types; - - err = carl9170_fw_checksum(ar, data, len); - if (err) - return err; - - otus_desc = carl9170_fw_find_desc(ar, OTUS_MAGIC, - sizeof(*otus_desc), CARL9170FW_OTUS_DESC_CUR_VER); - if (!otus_desc) { - return -ENODATA; - } - -#define SUPP(feat) \ - (carl9170fw_supports(otus_desc->feature_set, feat)) - - if (!SUPP(CARL9170FW_DUMMY_FEATURE)) { - dev_err(&ar->udev->dev, "invalid firmware descriptor " - "format detected.\n"); - return -EINVAL; - } - - ar->fw.api_version = otus_desc->api_ver; - - if (ar->fw.api_version < CARL9170FW_API_MIN_VER || - ar->fw.api_version > CARL9170FW_API_MAX_VER) { - dev_err(&ar->udev->dev, "unsupported firmware api version.\n"); - return -EINVAL; - } - - if (!SUPP(CARL9170FW_COMMAND_PHY) || SUPP(CARL9170FW_UNUSABLE) || - !SUPP(CARL9170FW_HANDLE_BACK_REQ)) { - dev_err(&ar->udev->dev, "firmware does support " - "mandatory features.\n"); - return -ECANCELED; - } - - if (ilog2(le32_to_cpu(otus_desc->feature_set)) >= - __CARL9170FW_FEATURE_NUM) { - dev_warn(&ar->udev->dev, "driver does not support all " - "firmware features.\n"); - } - - if (!SUPP(CARL9170FW_COMMAND_CAM)) { - dev_info(&ar->udev->dev, "crypto offloading is disabled " - "by firmware.\n"); - ar->disable_offload = true; - } - - if (SUPP(CARL9170FW_PSM) && SUPP(CARL9170FW_FIXED_5GHZ_PSM)) - ar->hw->flags |= IEEE80211_HW_SUPPORTS_PS; - - if (!SUPP(CARL9170FW_USB_INIT_FIRMWARE)) { - dev_err(&ar->udev->dev, "firmware does not provide " - "mandatory interfaces.\n"); - return -EINVAL; - } - - if (SUPP(CARL9170FW_MINIBOOT)) - ar->fw.offset = le16_to_cpu(otus_desc->miniboot_size); - else - ar->fw.offset = 0; - - if (SUPP(CARL9170FW_USB_DOWN_STREAM)) { - ar->hw->extra_tx_headroom += sizeof(struct ar9170_stream); - ar->fw.tx_stream = true; - } - - if (SUPP(CARL9170FW_USB_UP_STREAM)) - ar->fw.rx_stream = true; - - if (SUPP(CARL9170FW_RX_FILTER)) { - ar->fw.rx_filter = true; - ar->rx_filter_caps = FIF_FCSFAIL | FIF_PLCPFAIL | - FIF_CONTROL | FIF_PSPOLL | FIF_OTHER_BSS | - FIF_PROMISC_IN_BSS; - } - - if (SUPP(CARL9170FW_HW_COUNTERS)) - ar->fw.hw_counters = true; - - if (SUPP(CARL9170FW_WOL)) - device_set_wakeup_enable(&ar->udev->dev, true); - - if_comb_types = BIT(NL80211_IFTYPE_STATION) | - BIT(NL80211_IFTYPE_P2P_CLIENT); - - ar->fw.vif_num = otus_desc->vif_num; - ar->fw.cmd_bufs = otus_desc->cmd_bufs; - ar->fw.address = le32_to_cpu(otus_desc->fw_address); - ar->fw.rx_size = le16_to_cpu(otus_desc->rx_max_frame_len); - ar->fw.mem_blocks = min_t(unsigned int, otus_desc->tx_descs, 0xfe); - atomic_set(&ar->mem_free_blocks, ar->fw.mem_blocks); - ar->fw.mem_block_size = le16_to_cpu(otus_desc->tx_frag_len); - - if (ar->fw.vif_num >= AR9170_MAX_VIRTUAL_MAC || !ar->fw.vif_num || - ar->fw.mem_blocks < 16 || !ar->fw.cmd_bufs || - ar->fw.mem_block_size < 64 || ar->fw.mem_block_size > 512 || - ar->fw.rx_size > 32768 || ar->fw.rx_size < 4096 || - !valid_cpu_addr(ar->fw.address)) { - dev_err(&ar->udev->dev, "firmware shows obvious signs of " - "malicious tampering.\n"); - return -EINVAL; - } - - ar->fw.beacon_addr = le32_to_cpu(otus_desc->bcn_addr); - ar->fw.beacon_max_len = le16_to_cpu(otus_desc->bcn_len); - - if (valid_dma_addr(ar->fw.beacon_addr) && ar->fw.beacon_max_len >= - AR9170_MAC_BCN_LENGTH_MAX) { - ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC); - - if (SUPP(CARL9170FW_WLANTX_CAB)) { - if_comb_types |= - BIT(NL80211_IFTYPE_AP) | - BIT(NL80211_IFTYPE_P2P_GO); - } - } - - ar->if_comb_limits[0].max = ar->fw.vif_num; - ar->if_comb_limits[0].types = if_comb_types; - - ar->if_combs[0].num_different_channels = 1; - ar->if_combs[0].max_interfaces = ar->fw.vif_num; - ar->if_combs[0].limits = ar->if_comb_limits; - ar->if_combs[0].n_limits = ARRAY_SIZE(ar->if_comb_limits); - - ar->hw->wiphy->iface_combinations = ar->if_combs; - ar->hw->wiphy->n_iface_combinations = ARRAY_SIZE(ar->if_combs); - - ar->hw->wiphy->interface_modes |= if_comb_types; - -#undef SUPPORTED - return carl9170_fw_tx_sequence(ar); -} - -static struct carl9170fw_desc_head * -carl9170_find_fw_desc(struct ar9170 *ar, const __u8 *fw_data, const size_t len) - -{ - int scan = 0, found = 0; - - if (!carl9170fw_size_check(len)) { - dev_err(&ar->udev->dev, "firmware size is out of bound.\n"); - return NULL; - } - - while (scan < len - sizeof(struct carl9170fw_desc_head)) { - if (fw_data[scan++] == otus_magic[found]) - found++; - else - found = 0; - - if (scan >= len) - break; - - if (found == sizeof(otus_magic)) - break; - } - - if (found != sizeof(otus_magic)) - return NULL; - - return (void *)&fw_data[scan - found]; -} - -int carl9170_parse_firmware(struct ar9170 *ar) -{ - const struct carl9170fw_desc_head *fw_desc = NULL; - const struct firmware *fw = ar->fw.fw; - unsigned long header_offset = 0; - int err; - - if (WARN_ON(!fw)) - return -EINVAL; - - fw_desc = carl9170_find_fw_desc(ar, fw->data, fw->size); - - if (!fw_desc) { - dev_err(&ar->udev->dev, "unsupported firmware.\n"); - return -ENODATA; - } - - header_offset = (unsigned long)fw_desc - (unsigned long)fw->data; - - err = carl9170_fw_verify_descs(ar, fw_desc, fw->size - header_offset); - if (err) { - dev_err(&ar->udev->dev, "damaged firmware (%d).\n", err); - return err; - } - - ar->fw.desc = fw_desc; - - carl9170_fw_info(ar); - - err = carl9170_fw(ar, fw->data, fw->size); - if (err) { - dev_err(&ar->udev->dev, "failed to parse firmware (%d).\n", - err); - return err; - } - - return 0; -} |