diff options
Diffstat (limited to 'drivers/net/wireless/iwmc3200wifi/eeprom.c')
| -rw-r--r-- | drivers/net/wireless/iwmc3200wifi/eeprom.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwmc3200wifi/eeprom.c b/drivers/net/wireless/iwmc3200wifi/eeprom.c new file mode 100644 index 00000000000..0f34b84fd2e --- /dev/null +++ b/drivers/net/wireless/iwmc3200wifi/eeprom.c @@ -0,0 +1,187 @@ +/* + * 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 "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_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_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++) { +#ifdef CONFIG_IWM_B0_HW_SUPPORT + if (iwm->conf.hw_b0 && (i >= IWM_EEPROM_INDIRECT_OFFSET)) + break; +#endif + 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); +} |