235 lines
6.5 KiB
C
235 lines
6.5 KiB
C
/*
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* Intel Wireless Multicomm 3200 WiFi driver
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*
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* Copyright (C) 2009 Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*
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* Intel Corporation <ilw@linux.intel.com>
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* Samuel Ortiz <samuel.ortiz@intel.com>
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* Zhu Yi <yi.zhu@intel.com>
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*
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include "iwm.h"
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#include "umac.h"
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#include "commands.h"
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#include "eeprom.h"
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static struct iwm_eeprom_entry eeprom_map[] = {
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[IWM_EEPROM_SIG] =
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{"Signature", IWM_EEPROM_SIG_OFF, IWM_EEPROM_SIG_LEN},
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[IWM_EEPROM_VERSION] =
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{"Version", IWM_EEPROM_VERSION_OFF, IWM_EEPROM_VERSION_LEN},
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[IWM_EEPROM_OEM_HW_VERSION] =
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{"OEM HW version", IWM_EEPROM_OEM_HW_VERSION_OFF,
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IWM_EEPROM_OEM_HW_VERSION_LEN},
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[IWM_EEPROM_MAC_VERSION] =
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{"MAC version", IWM_EEPROM_MAC_VERSION_OFF, IWM_EEPROM_MAC_VERSION_LEN},
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[IWM_EEPROM_CARD_ID] =
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{"Card ID", IWM_EEPROM_CARD_ID_OFF, IWM_EEPROM_CARD_ID_LEN},
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[IWM_EEPROM_RADIO_CONF] =
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{"Radio config", IWM_EEPROM_RADIO_CONF_OFF, IWM_EEPROM_RADIO_CONF_LEN},
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[IWM_EEPROM_SKU_CAP] =
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{"SKU capabilities", IWM_EEPROM_SKU_CAP_OFF, IWM_EEPROM_SKU_CAP_LEN},
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[IWM_EEPROM_FAT_CHANNELS_CAP] =
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{"HT channels capabilities", IWM_EEPROM_FAT_CHANNELS_CAP_OFF,
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IWM_EEPROM_FAT_CHANNELS_CAP_LEN},
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[IWM_EEPROM_CALIB_RXIQ_OFFSET] =
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{"RX IQ offset", IWM_EEPROM_CALIB_RXIQ_OFF, IWM_EEPROM_INDIRECT_LEN},
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[IWM_EEPROM_CALIB_RXIQ] =
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{"Calib RX IQ", 0, IWM_EEPROM_CALIB_RXIQ_LEN},
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};
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static int iwm_eeprom_read(struct iwm_priv *iwm, u8 eeprom_id)
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{
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int ret;
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u32 entry_size, chunk_size, data_offset = 0, addr_offset = 0;
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u32 addr;
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struct iwm_udma_wifi_cmd udma_cmd;
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struct iwm_umac_cmd umac_cmd;
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struct iwm_umac_cmd_eeprom_proxy eeprom_cmd;
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if (eeprom_id > (IWM_EEPROM_LAST - 1))
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return -EINVAL;
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entry_size = eeprom_map[eeprom_id].length;
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if (eeprom_id >= IWM_EEPROM_INDIRECT_DATA) {
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/* indirect data */
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u32 off_id = eeprom_id - IWM_EEPROM_INDIRECT_DATA +
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IWM_EEPROM_INDIRECT_OFFSET;
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eeprom_map[eeprom_id].offset =
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*(u16 *)(iwm->eeprom + eeprom_map[off_id].offset) << 1;
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}
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addr = eeprom_map[eeprom_id].offset;
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udma_cmd.eop = 1;
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udma_cmd.credit_group = 0x4;
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udma_cmd.ra_tid = UMAC_HDI_ACT_TBL_IDX_HOST_CMD;
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udma_cmd.lmac_offset = 0;
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umac_cmd.id = UMAC_CMD_OPCODE_EEPROM_PROXY;
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umac_cmd.resp = 1;
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while (entry_size > 0) {
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chunk_size = min_t(u32, entry_size, IWM_MAX_EEPROM_DATA_LEN);
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eeprom_cmd.hdr.type =
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cpu_to_le32(IWM_UMAC_CMD_EEPROM_TYPE_READ);
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eeprom_cmd.hdr.offset = cpu_to_le32(addr + addr_offset);
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eeprom_cmd.hdr.len = cpu_to_le32(chunk_size);
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ret = iwm_hal_send_umac_cmd(iwm, &udma_cmd,
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&umac_cmd, &eeprom_cmd,
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sizeof(struct iwm_umac_cmd_eeprom_proxy));
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if (ret < 0) {
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IWM_ERR(iwm, "Couldn't read eeprom\n");
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return ret;
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}
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ret = iwm_notif_handle(iwm, UMAC_CMD_OPCODE_EEPROM_PROXY,
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IWM_SRC_UMAC, 2*HZ);
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if (ret < 0) {
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IWM_ERR(iwm, "Did not get any eeprom answer\n");
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return ret;
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}
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data_offset += chunk_size;
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addr_offset += chunk_size;
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entry_size -= chunk_size;
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}
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return 0;
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}
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u8 *iwm_eeprom_access(struct iwm_priv *iwm, u8 eeprom_id)
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{
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if (!iwm->eeprom)
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return ERR_PTR(-ENODEV);
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return iwm->eeprom + eeprom_map[eeprom_id].offset;
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}
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int iwm_eeprom_fat_channels(struct iwm_priv *iwm)
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{
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struct wiphy *wiphy = iwm_to_wiphy(iwm);
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struct ieee80211_supported_band *band;
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u16 *channels, i;
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channels = (u16 *)iwm_eeprom_access(iwm, IWM_EEPROM_FAT_CHANNELS_CAP);
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if (IS_ERR(channels))
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return PTR_ERR(channels);
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band = wiphy->bands[IEEE80211_BAND_2GHZ];
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band->ht_cap.ht_supported = true;
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for (i = 0; i < IWM_EEPROM_FAT_CHANNELS_24; i++)
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if (!(channels[i] & IWM_EEPROM_FAT_CHANNEL_ENABLED))
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band->ht_cap.ht_supported = false;
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band = wiphy->bands[IEEE80211_BAND_5GHZ];
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band->ht_cap.ht_supported = true;
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for (i = IWM_EEPROM_FAT_CHANNELS_24; i < IWM_EEPROM_FAT_CHANNELS; i++)
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if (!(channels[i] & IWM_EEPROM_FAT_CHANNEL_ENABLED))
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band->ht_cap.ht_supported = false;
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return 0;
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}
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u32 iwm_eeprom_wireless_mode(struct iwm_priv *iwm)
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{
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u16 sku_cap;
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u32 wireless_mode = 0;
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sku_cap = *((u16 *)iwm_eeprom_access(iwm, IWM_EEPROM_SKU_CAP));
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if (sku_cap & IWM_EEPROM_SKU_CAP_BAND_24GHZ)
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wireless_mode |= WIRELESS_MODE_11G;
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if (sku_cap & IWM_EEPROM_SKU_CAP_BAND_52GHZ)
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wireless_mode |= WIRELESS_MODE_11A;
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if (sku_cap & IWM_EEPROM_SKU_CAP_11N_ENABLE)
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wireless_mode |= WIRELESS_MODE_11N;
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return wireless_mode;
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}
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int iwm_eeprom_init(struct iwm_priv *iwm)
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{
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int i, ret = 0;
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char name[32];
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iwm->eeprom = kzalloc(IWM_EEPROM_LEN, GFP_KERNEL);
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if (!iwm->eeprom)
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return -ENOMEM;
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for (i = IWM_EEPROM_FIRST; i < IWM_EEPROM_LAST; i++) {
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ret = iwm_eeprom_read(iwm, i);
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if (ret < 0) {
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IWM_ERR(iwm, "Couldn't read eeprom entry #%d: %s\n",
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i, eeprom_map[i].name);
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break;
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}
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}
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IWM_DBG_BOOT(iwm, DBG, "EEPROM dump:\n");
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for (i = IWM_EEPROM_FIRST; i < IWM_EEPROM_LAST; i++) {
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memset(name, 0, 32);
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sprintf(name, "%s: ", eeprom_map[i].name);
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IWM_HEXDUMP(iwm, DBG, BOOT, name,
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iwm->eeprom + eeprom_map[i].offset,
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eeprom_map[i].length);
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}
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return ret;
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}
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void iwm_eeprom_exit(struct iwm_priv *iwm)
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{
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kfree(iwm->eeprom);
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}
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