/*
* Intel Wireless Multicomm 3200 WiFi driver
*
* Copyright (C) 2009 Intel Corporation. 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 of 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.
*
*
* Intel Corporation <ilw@linux.intel.com>
* Samuel Ortiz <samuel.ortiz@intel.com>
* Zhu Yi <yi.zhu@intel.com>
*
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include "iwm.h"
#include "umac.h"
#include "commands.h"
#include "eeprom.h"
static struct iwm_eeprom_entry eeprom_map[] = {
[IWM_EEPROM_SIG] =
{"Signature", IWM_EEPROM_SIG_OFF, IWM_EEPROM_SIG_LEN},
[IWM_EEPROM_VERSION] =
{"Version", IWM_EEPROM_VERSION_OFF, IWM_EEPROM_VERSION_LEN},
[IWM_EEPROM_OEM_HW_VERSION] =
{"OEM HW version", IWM_EEPROM_OEM_HW_VERSION_OFF,
IWM_EEPROM_OEM_HW_VERSION_LEN},
[IWM_EEPROM_MAC_VERSION] =
{"MAC version", IWM_EEPROM_MAC_VERSION_OFF, IWM_EEPROM_MAC_VERSION_LEN},
[IWM_EEPROM_CARD_ID] =
{"Card ID", IWM_EEPROM_CARD_ID_OFF, IWM_EEPROM_CARD_ID_LEN},
[IWM_EEPROM_RADIO_CONF] =
{"Radio config", IWM_EEPROM_RADIO_CONF_OFF, IWM_EEPROM_RADIO_CONF_LEN},
[IWM_EEPROM_SKU_CAP] =
{"SKU capabilities", IWM_EEPROM_SKU_CAP_OFF, IWM_EEPROM_SKU_CAP_LEN},
[IWM_EEPROM_FAT_CHANNELS_CAP] =
{"HT channels capabilities", IWM_EEPROM_FAT_CHANNELS_CAP_OFF,
IWM_EEPROM_FAT_CHANNELS_CAP_LEN},
[IWM_EEPROM_CALIB_RXIQ_OFFSET] =
{"RX IQ offset", IWM_EEPROM_CALIB_RXIQ_OFF, IWM_EEPROM_INDIRECT_LEN},
[IWM_EEPROM_CALIB_RXIQ] =
{"Calib RX IQ", 0, IWM_EEPROM_CALIB_RXIQ_LEN},
};
static int iwm_eeprom_read(struct iwm_priv *iwm, u8 eeprom_id)
{
int ret;
u32 entry_size, chunk_size, data_offset = 0, addr_offset = 0;
u32 addr;
struct iwm_udma_wifi_cmd udma_cmd;
struct iwm_umac_cmd umac_cmd;
struct iwm_umac_cmd_eeprom_proxy eeprom_cmd;
if (eeprom_id > (IWM_EEPROM_LAST - 1))
return -EINVAL;
entry_size = eeprom_map[eeprom_id].length;
if (eeprom_id >= IWM_EEPROM_INDIRECT_DATA) {
/* indirect data */
u32 off_id = eeprom_id - IWM_EEPROM_INDIRECT_DATA +
IWM_EEPROM_INDIRECT_OFFSET;
eeprom_map[eeprom_id].offset =
*(u16 *)(iwm->eeprom + eeprom_map[off_id].offset) << 1;
}
addr = eeprom_map[eeprom_id].offset;
udma_cmd.eop = 1;
udma_cmd.credit_group = 0x4;
udma_cmd.ra_tid = UMAC_HDI_ACT_TBL_IDX_HOST_CMD;
udma_cmd.lmac_offset = 0;
umac_cmd.id = UMAC_CMD_OPCODE_EEPROM_PROXY;
umac_cmd.resp = 1;
while (entry_size > 0) {
chunk_size = min_t(u32, entry_size, IWM_MAX_EEPROM_DATA_LEN);
eeprom_cmd.hdr.type =
cpu_to_le32(IWM_UMAC_CMD_EEPROM_TYPE_READ);
eeprom_cmd.hdr.offset = cpu_to_le32(addr + addr_offset);
eeprom_cmd.hdr.len = cpu_to_le32(chunk_size);
ret = iwm_hal_send_umac_cmd(iwm, &udma_cmd,
&umac_cmd, &eeprom_cmd,
sizeof(struct iwm_umac_cmd_eeprom_proxy));
if (ret < 0) {
IWM_ERR(iwm, "Couldn't read eeprom\n");
return ret;
}
ret = iwm_notif_handle(iwm, UMAC_CMD_OPCODE_EEPROM_PROXY,
IWM_SRC_UMAC, 2*HZ);
if (ret < 0) {
IWM_ERR(iwm, "Did not get any eeprom answer\n");
return ret;
}
data_offset += chunk_size;
addr_offset += chunk_size;
entry_size -= chunk_size;
}
return 0;
}
u8 *iwm_eeprom_access(struct iwm_priv *iwm, u8 eeprom_id)
{
if (!iwm->eeprom)
return ERR_PTR(-ENODEV);
return iwm->eeprom + eeprom_map[eeprom_id].offset;
}
int iwm_eeprom_fat_channels(struct iwm_priv *iwm)
{
struct wiphy *wiphy = iwm_to_wiphy(iwm);
struct ieee80211_supported_band *band;
u16 *channels, i;
channels = (u16 *)iwm_eeprom_access(iwm, IWM_EEPROM_FAT_CHANNELS_CAP);
if (IS_ERR(channels))
return PTR_ERR(channels);
band = wiphy->bands[IEEE80211_BAND_2GHZ];
band->ht_cap.ht_supported = true;
for (i = 0; i < IWM_EEPROM_FAT_CHANNELS_24; i++)
if (!(channels[i] & IWM_EEPROM_FAT_CHANNEL_ENABLED))
band->ht_cap.ht_supported = false;
band = wiphy->bands[IEEE80211_BAND_5GHZ];
band->ht_cap.ht_supported = true;
for (i = IWM_EEPROM_FAT_CHANNELS_24; i < IWM_EEPROM_FAT_CHANNELS; i++)
if (!(channels[i] & IWM_EEPROM_FAT_CHANNEL_ENABLED))
band->ht_cap.ht_supported = false;
return 0;
}
u32 iwm_eeprom_wireless_mode(struct iwm_priv *iwm)
{
u16 sku_cap;
u32 wireless_mode = 0;
sku_cap = *((u16 *)iwm_eeprom_access(iwm, IWM_EEPROM_SKU_CAP));
if (sku_cap & IWM_EEPROM_SKU_CAP_BAND_24GHZ)
wireless_mode |= WIRELESS_MODE_11G;
if (sku_cap & IWM_EEPROM_SKU_CAP_BAND_52GHZ)
wireless_mode |= WIRELESS_MODE_11A;
if (sku_cap & IWM_EEPROM_SKU_CAP_11N_ENABLE)
wireless_mode |= WIRELESS_MODE_11N;
return wireless_mode;
}
int iwm_eeprom_init(struct iwm_priv *iwm)
{
int i, ret = 0;
char name[32];
iwm->eeprom = kzalloc(IWM_EEPROM_LEN, GFP_KERNEL);
if (!iwm->eeprom)
return -ENOMEM;
for (i = IWM_EEPROM_FIRST; i < IWM_EEPROM_LAST; i++) {
ret = iwm_eeprom_read(iwm, i);
if (ret < 0) {
IWM_ERR(iwm, "Couldn't read eeprom entry #%d: %s\n",
i, eeprom_map[i].name);
break;
}
}
IWM_DBG_BOOT(iwm, DBG, "EEPROM dump:\n");
for (i = IWM_EEPROM_FIRST; i < IWM_EEPROM_LAST; i++) {
memset(name, 0, 32);
sprintf(name, "%s: ", eeprom_map[i].name);
IWM_HEXDUMP(iwm, DBG, BOOT, name,
iwm->eeprom + eeprom_map[i].offset,
eeprom_map[i].length);
}
return ret;
}
void iwm_eeprom_exit(struct iwm_priv *iwm)
{
kfree(iwm->eeprom);
}
