diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-drv.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-drv.c | 993 |
1 files changed, 993 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-drv.c b/drivers/net/wireless/iwlwifi/iwl-drv.c new file mode 100644 index 000000000000..6f312c77af5e --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-drv.c @@ -0,0 +1,993 @@ +/****************************************************************************** + * + * 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) 2007 - 2012 Intel Corporation. All rights reserved. + * + * 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 LICENSE.GPL. + * + * 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) 2005 - 2012 Intel Corporation. All rights reserved. + * 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/completion.h> +#include <linux/dma-mapping.h> +#include <linux/firmware.h> +#include <linux/module.h> + +#include "iwl-drv.h" +#include "iwl-trans.h" +#include "iwl-shared.h" +#include "iwl-op-mode.h" +#include "iwl-agn-hw.h" + +/* private includes */ +#include "iwl-fw-file.h" + +/** + * struct iwl_drv - drv common data + * @fw: the iwl_fw structure + * @shrd: pointer to common shared structure + * @op_mode: the running op_mode + * @fw_index: firmware revision to try loading + * @firmware_name: composite filename of ucode file to load + * @request_firmware_complete: the firmware has been obtained from user space + */ +struct iwl_drv { + struct iwl_fw fw; + + struct iwl_shared *shrd; + struct iwl_op_mode *op_mode; + + int fw_index; /* firmware we're trying to load */ + char firmware_name[25]; /* name of firmware file to load */ + + struct completion request_firmware_complete; +}; + + + +/* + * struct fw_sec: Just for the image parsing proccess. + * For the fw storage we are using struct fw_desc. + */ +struct fw_sec { + const void *data; /* the sec data */ + size_t size; /* section size */ + u32 offset; /* offset of writing in the device */ +}; + +static void iwl_free_fw_desc(struct iwl_drv *drv, struct fw_desc *desc) +{ + if (desc->v_addr) + dma_free_coherent(trans(drv)->dev, desc->len, + desc->v_addr, desc->p_addr); + desc->v_addr = NULL; + desc->len = 0; +} + +static void iwl_free_fw_img(struct iwl_drv *drv, struct fw_img *img) +{ + int i; + for (i = 0; i < IWL_UCODE_SECTION_MAX; i++) + iwl_free_fw_desc(drv, &img->sec[i]); +} + +static void iwl_dealloc_ucode(struct iwl_drv *drv) +{ + int i; + for (i = 0; i < IWL_UCODE_TYPE_MAX; i++) + iwl_free_fw_img(drv, drv->fw.img + i); +} + +static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc, + struct fw_sec *sec) +{ + if (!sec || !sec->size) { + desc->v_addr = NULL; + return -EINVAL; + } + + desc->v_addr = dma_alloc_coherent(trans(drv)->dev, sec->size, + &desc->p_addr, GFP_KERNEL); + if (!desc->v_addr) + return -ENOMEM; + + desc->len = sec->size; + desc->offset = sec->offset; + memcpy(desc->v_addr, sec->data, sec->size); + return 0; +} + +static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context); + +#define UCODE_EXPERIMENTAL_INDEX 100 +#define UCODE_EXPERIMENTAL_TAG "exp" + +static int iwl_request_firmware(struct iwl_drv *drv, bool first) +{ + const struct iwl_cfg *cfg = cfg(drv); + const char *name_pre = cfg->fw_name_pre; + char tag[8]; + + if (first) { +#ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE + drv->fw_index = UCODE_EXPERIMENTAL_INDEX; + strcpy(tag, UCODE_EXPERIMENTAL_TAG); + } else if (drv->fw_index == UCODE_EXPERIMENTAL_INDEX) { +#endif + drv->fw_index = cfg->ucode_api_max; + sprintf(tag, "%d", drv->fw_index); + } else { + drv->fw_index--; + sprintf(tag, "%d", drv->fw_index); + } + + if (drv->fw_index < cfg->ucode_api_min) { + IWL_ERR(drv, "no suitable firmware found!\n"); + return -ENOENT; + } + + sprintf(drv->firmware_name, "%s%s%s", name_pre, tag, ".ucode"); + + IWL_DEBUG_INFO(drv, "attempting to load firmware %s'%s'\n", + (drv->fw_index == UCODE_EXPERIMENTAL_INDEX) + ? "EXPERIMENTAL " : "", + drv->firmware_name); + + return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name, + trans(drv)->dev, + GFP_KERNEL, drv, iwl_ucode_callback); +} + +struct fw_img_parsing { + struct fw_sec sec[IWL_UCODE_SECTION_MAX]; + int sec_counter; +}; + +/* + * struct fw_sec_parsing: to extract fw section and it's offset from tlv + */ +struct fw_sec_parsing { + __le32 offset; + const u8 data[]; +} __packed; + +/** + * struct iwl_tlv_calib_data - parse the default calib data from TLV + * + * @ucode_type: the uCode to which the following default calib relates. + * @calib: default calibrations. + */ +struct iwl_tlv_calib_data { + __le32 ucode_type; + __le64 calib; +} __packed; + +struct iwl_firmware_pieces { + struct fw_img_parsing img[IWL_UCODE_TYPE_MAX]; + + u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr; + u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr; +}; + +/* + * These functions are just to extract uCode section data from the pieces + * structure. + */ +static struct fw_sec *get_sec(struct iwl_firmware_pieces *pieces, + enum iwl_ucode_type type, + int sec) +{ + return &pieces->img[type].sec[sec]; +} + +static void set_sec_data(struct iwl_firmware_pieces *pieces, + enum iwl_ucode_type type, + int sec, + const void *data) +{ + pieces->img[type].sec[sec].data = data; +} + +static void set_sec_size(struct iwl_firmware_pieces *pieces, + enum iwl_ucode_type type, + int sec, + size_t size) +{ + pieces->img[type].sec[sec].size = size; +} + +static size_t get_sec_size(struct iwl_firmware_pieces *pieces, + enum iwl_ucode_type type, + int sec) +{ + return pieces->img[type].sec[sec].size; +} + +static void set_sec_offset(struct iwl_firmware_pieces *pieces, + enum iwl_ucode_type type, + int sec, + u32 offset) +{ + pieces->img[type].sec[sec].offset = offset; +} + +/* + * Gets uCode section from tlv. + */ +static int iwl_store_ucode_sec(struct iwl_firmware_pieces *pieces, + const void *data, enum iwl_ucode_type type, + int size) +{ + struct fw_img_parsing *img; + struct fw_sec *sec; + struct fw_sec_parsing *sec_parse; + + if (WARN_ON(!pieces || !data || type >= IWL_UCODE_TYPE_MAX)) + return -1; + + sec_parse = (struct fw_sec_parsing *)data; + + img = &pieces->img[type]; + sec = &img->sec[img->sec_counter]; + + sec->offset = le32_to_cpu(sec_parse->offset); + sec->data = sec_parse->data; + + ++img->sec_counter; + + return 0; +} + +static int iwl_set_default_calib(struct iwl_drv *drv, const u8 *data) +{ + struct iwl_tlv_calib_data *def_calib = + (struct iwl_tlv_calib_data *)data; + u32 ucode_type = le32_to_cpu(def_calib->ucode_type); + if (ucode_type >= IWL_UCODE_TYPE_MAX) { + IWL_ERR(drv, "Wrong ucode_type %u for default calibration.\n", + ucode_type); + return -EINVAL; + } + drv->fw.default_calib[ucode_type] = le64_to_cpu(def_calib->calib); + return 0; +} + +static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv, + const struct firmware *ucode_raw, + struct iwl_firmware_pieces *pieces) +{ + struct iwl_ucode_header *ucode = (void *)ucode_raw->data; + u32 api_ver, hdr_size, build; + char buildstr[25]; + const u8 *src; + + drv->fw.ucode_ver = le32_to_cpu(ucode->ver); + api_ver = IWL_UCODE_API(drv->fw.ucode_ver); + + switch (api_ver) { + default: + hdr_size = 28; + if (ucode_raw->size < hdr_size) { + IWL_ERR(drv, "File size too small!\n"); + return -EINVAL; + } + build = le32_to_cpu(ucode->u.v2.build); + set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, + le32_to_cpu(ucode->u.v2.inst_size)); + set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, + le32_to_cpu(ucode->u.v2.data_size)); + set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, + le32_to_cpu(ucode->u.v2.init_size)); + set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, + le32_to_cpu(ucode->u.v2.init_data_size)); + src = ucode->u.v2.data; + break; + case 0: + case 1: + case 2: + hdr_size = 24; + if (ucode_raw->size < hdr_size) { + IWL_ERR(drv, "File size too small!\n"); + return -EINVAL; + } + build = 0; + set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, + le32_to_cpu(ucode->u.v1.inst_size)); + set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, + le32_to_cpu(ucode->u.v1.data_size)); + set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, + le32_to_cpu(ucode->u.v1.init_size)); + set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, + le32_to_cpu(ucode->u.v1.init_data_size)); + src = ucode->u.v1.data; + break; + } + + if (build) + sprintf(buildstr, " build %u%s", build, + (drv->fw_index == UCODE_EXPERIMENTAL_INDEX) + ? " (EXP)" : ""); + else + buildstr[0] = '\0'; + + snprintf(drv->fw.fw_version, + sizeof(drv->fw.fw_version), + "%u.%u.%u.%u%s", + IWL_UCODE_MAJOR(drv->fw.ucode_ver), + IWL_UCODE_MINOR(drv->fw.ucode_ver), + IWL_UCODE_API(drv->fw.ucode_ver), + IWL_UCODE_SERIAL(drv->fw.ucode_ver), + buildstr); + + /* Verify size of file vs. image size info in file's header */ + + if (ucode_raw->size != hdr_size + + get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) + + get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) + + get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) + + get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) { + + IWL_ERR(drv, + "uCode file size %d does not match expected size\n", + (int)ucode_raw->size); + return -EINVAL; + } + + + set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src); + src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST); + set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, + IWLAGN_RTC_INST_LOWER_BOUND); + set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src); + src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA); + set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, + IWLAGN_RTC_DATA_LOWER_BOUND); + set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src); + src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST); + set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, + IWLAGN_RTC_INST_LOWER_BOUND); + set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src); + src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA); + set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, + IWLAGN_RTC_DATA_LOWER_BOUND); + return 0; +} + +static int iwl_parse_tlv_firmware(struct iwl_drv *drv, + const struct firmware *ucode_raw, + struct iwl_firmware_pieces *pieces, + struct iwl_ucode_capabilities *capa) +{ + struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data; + struct iwl_ucode_tlv *tlv; + size_t len = ucode_raw->size; + const u8 *data; + int wanted_alternative = iwlagn_mod_params.wanted_ucode_alternative; + int tmp; + u64 alternatives; + u32 tlv_len; + enum iwl_ucode_tlv_type tlv_type; + const u8 *tlv_data; + char buildstr[25]; + u32 build; + + if (len < sizeof(*ucode)) { + IWL_ERR(drv, "uCode has invalid length: %zd\n", len); + return -EINVAL; + } + + if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) { + IWL_ERR(drv, "invalid uCode magic: 0X%x\n", + le32_to_cpu(ucode->magic)); + return -EINVAL; + } + + /* + * Check which alternatives are present, and "downgrade" + * when the chosen alternative is not present, warning + * the user when that happens. Some files may not have + * any alternatives, so don't warn in that case. + */ + alternatives = le64_to_cpu(ucode->alternatives); + tmp = wanted_alternative; + if (wanted_alternative > 63) + wanted_alternative = 63; + while (wanted_alternative && !(alternatives & BIT(wanted_alternative))) + wanted_alternative--; + if (wanted_alternative && wanted_alternative != tmp) + IWL_WARN(drv, + "uCode alternative %d not available, choosing %d\n", + tmp, wanted_alternative); + + drv->fw.ucode_ver = le32_to_cpu(ucode->ver); + build = le32_to_cpu(ucode->build); + + if (build) + sprintf(buildstr, " build %u%s", build, + (drv->fw_index == UCODE_EXPERIMENTAL_INDEX) + ? " (EXP)" : ""); + else + buildstr[0] = '\0'; + + snprintf(drv->fw.fw_version, + sizeof(drv->fw.fw_version), + "%u.%u.%u.%u%s", + IWL_UCODE_MAJOR(drv->fw.ucode_ver), + IWL_UCODE_MINOR(drv->fw.ucode_ver), + IWL_UCODE_API(drv->fw.ucode_ver), + IWL_UCODE_SERIAL(drv->fw.ucode_ver), + buildstr); + + data = ucode->data; + + len -= sizeof(*ucode); + + while (len >= sizeof(*tlv)) { + u16 tlv_alt; + + len -= sizeof(*tlv); + tlv = (void *)data; + + tlv_len = le32_to_cpu(tlv->length); + tlv_type = le16_to_cpu(tlv->type); + tlv_alt = le16_to_cpu(tlv->alternative); + tlv_data = tlv->data; + + if (len < tlv_len) { + IWL_ERR(drv, "invalid TLV len: %zd/%u\n", + len, tlv_len); + return -EINVAL; + } + len -= ALIGN(tlv_len, 4); + data += sizeof(*tlv) + ALIGN(tlv_len, 4); + + /* + * Alternative 0 is always valid. + * + * Skip alternative TLVs that are not selected. + */ + if (tlv_alt != 0 && tlv_alt != wanted_alternative) + continue; + + switch (tlv_type) { + case IWL_UCODE_TLV_INST: + set_sec_data(pieces, IWL_UCODE_REGULAR, + IWL_UCODE_SECTION_INST, tlv_data); + set_sec_size(pieces, IWL_UCODE_REGULAR, + IWL_UCODE_SECTION_INST, tlv_len); + set_sec_offset(pieces, IWL_UCODE_REGULAR, + IWL_UCODE_SECTION_INST, + IWLAGN_RTC_INST_LOWER_BOUND); + break; + case IWL_UCODE_TLV_DATA: + set_sec_data(pieces, IWL_UCODE_REGULAR, + IWL_UCODE_SECTION_DATA, tlv_data); + set_sec_size(pieces, IWL_UCODE_REGULAR, + IWL_UCODE_SECTION_DATA, tlv_len); + set_sec_offset(pieces, IWL_UCODE_REGULAR, + IWL_UCODE_SECTION_DATA, + IWLAGN_RTC_DATA_LOWER_BOUND); + break; + case IWL_UCODE_TLV_INIT: + set_sec_data(pieces, IWL_UCODE_INIT, + IWL_UCODE_SECTION_INST, tlv_data); + set_sec_size(pieces, IWL_UCODE_INIT, + IWL_UCODE_SECTION_INST, tlv_len); + set_sec_offset(pieces, IWL_UCODE_INIT, + IWL_UCODE_SECTION_INST, + IWLAGN_RTC_INST_LOWER_BOUND); + break; + case IWL_UCODE_TLV_INIT_DATA: + set_sec_data(pieces, IWL_UCODE_INIT, + IWL_UCODE_SECTION_DATA, tlv_data); + set_sec_size(pieces, IWL_UCODE_INIT, + IWL_UCODE_SECTION_DATA, tlv_len); + set_sec_offset(pieces, IWL_UCODE_INIT, + IWL_UCODE_SECTION_DATA, + IWLAGN_RTC_DATA_LOWER_BOUND); + break; + case IWL_UCODE_TLV_BOOT: + IWL_ERR(drv, "Found unexpected BOOT ucode\n"); + break; + case IWL_UCODE_TLV_PROBE_MAX_LEN: + if (tlv_len != sizeof(u32)) + goto invalid_tlv_len; + capa->max_probe_length = + le32_to_cpup((__le32 *)tlv_data); + break; + case IWL_UCODE_TLV_PAN: + if (tlv_len) + goto invalid_tlv_len; + capa->flags |= IWL_UCODE_TLV_FLAGS_PAN; + break; + case IWL_UCODE_TLV_FLAGS: + /* must be at least one u32 */ + if (tlv_len < sizeof(u32)) + goto invalid_tlv_len; + /* and a proper number of u32s */ + if (tlv_len % sizeof(u32)) + goto invalid_tlv_len; + /* + * This driver only reads the first u32 as + * right now no more features are defined, + * if that changes then either the driver + * will not work with the new firmware, or + * it'll not take advantage of new features. + */ + capa->flags = le32_to_cpup((__le32 *)tlv_data); + break; + case IWL_UCODE_TLV_INIT_EVTLOG_PTR: + if (tlv_len != sizeof(u32)) + goto invalid_tlv_len; + pieces->init_evtlog_ptr = + le32_to_cpup((__le32 *)tlv_data); + break; + case IWL_UCODE_TLV_INIT_EVTLOG_SIZE: + if (tlv_len != sizeof(u32)) + goto invalid_tlv_len; + pieces->init_evtlog_size = + le32_to_cpup((__le32 *)tlv_data); + break; + case IWL_UCODE_TLV_INIT_ERRLOG_PTR: + if (tlv_len != sizeof(u32)) + goto invalid_tlv_len; + pieces->init_errlog_ptr = + le32_to_cpup((__le32 *)tlv_data); + break; + case IWL_UCODE_TLV_RUNT_EVTLOG_PTR: + if (tlv_len != sizeof(u32)) + goto invalid_tlv_len; + pieces->inst_evtlog_ptr = + le32_to_cpup((__le32 *)tlv_data); + break; + case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE: + if (tlv_len != sizeof(u32)) + goto invalid_tlv_len; + pieces->inst_evtlog_size = + le32_to_cpup((__le32 *)tlv_data); + break; + case IWL_UCODE_TLV_RUNT_ERRLOG_PTR: + if (tlv_len != sizeof(u32)) + goto invalid_tlv_len; + pieces->inst_errlog_ptr = + le32_to_cpup((__le32 *)tlv_data); + break; + case IWL_UCODE_TLV_ENHANCE_SENS_TBL: + if (tlv_len) + goto invalid_tlv_len; + drv->fw.enhance_sensitivity_table = true; + break; + case IWL_UCODE_TLV_WOWLAN_INST: + set_sec_data(pieces, IWL_UCODE_WOWLAN, + IWL_UCODE_SECTION_INST, tlv_data); + set_sec_size(pieces, IWL_UCODE_WOWLAN, + IWL_UCODE_SECTION_INST, tlv_len); + set_sec_offset(pieces, IWL_UCODE_WOWLAN, + IWL_UCODE_SECTION_INST, + IWLAGN_RTC_INST_LOWER_BOUND); + break; + case IWL_UCODE_TLV_WOWLAN_DATA: + set_sec_data(pieces, IWL_UCODE_WOWLAN, + IWL_UCODE_SECTION_DATA, tlv_data); + set_sec_size(pieces, IWL_UCODE_WOWLAN, + IWL_UCODE_SECTION_DATA, tlv_len); + set_sec_offset(pieces, IWL_UCODE_WOWLAN, + IWL_UCODE_SECTION_DATA, + IWLAGN_RTC_DATA_LOWER_BOUND); + break; + case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE: + if (tlv_len != sizeof(u32)) + goto invalid_tlv_len; + capa->standard_phy_calibration_size = + le32_to_cpup((__le32 *)tlv_data); + break; + case IWL_UCODE_TLV_SEC_RT: + iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR, + tlv_len); + drv->fw.mvm_fw = true; + break; + case IWL_UCODE_TLV_SEC_INIT: + iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT, + tlv_len); + drv->fw.mvm_fw = true; + break; + case IWL_UCODE_TLV_SEC_WOWLAN: + iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN, + tlv_len); + drv->fw.mvm_fw = true; + break; + case IWL_UCODE_TLV_DEF_CALIB: + if (tlv_len != sizeof(struct iwl_tlv_calib_data)) + goto invalid_tlv_len; + if (iwl_set_default_calib(drv, tlv_data)) + goto tlv_error; + break; + case IWL_UCODE_TLV_PHY_SKU: + if (tlv_len != sizeof(u32)) + goto invalid_tlv_len; + drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data); + break; + default: + IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type); + break; + } + } + + if (len) { + IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len); + iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len); + return -EINVAL; + } + + return 0; + + invalid_tlv_len: + IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len); + tlv_error: + iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len); + + return -EINVAL; +} + +static int alloc_pci_desc(struct iwl_drv *drv, + struct iwl_firmware_pieces *pieces, + enum iwl_ucode_type type) +{ + int i; + for (i = 0; + i < IWL_UCODE_SECTION_MAX && get_sec_size(pieces, type, i); + i++) + if (iwl_alloc_fw_desc(drv, &(drv->fw.img[type].sec[i]), + get_sec(pieces, type, i))) + return -1; + return 0; +} + +static int validate_sec_sizes(struct iwl_drv *drv, + struct iwl_firmware_pieces *pieces, + const struct iwl_cfg *cfg) +{ + IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n", + get_sec_size(pieces, IWL_UCODE_REGULAR, + IWL_UCODE_SECTION_INST)); + IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n", + get_sec_size(pieces, IWL_UCODE_REGULAR, + IWL_UCODE_SECTION_DATA)); + IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n", + get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST)); + IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n", + get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)); + + /* Verify that uCode images will fit in card's SRAM. */ + if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) > + cfg->max_inst_size) { + IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n", + get_sec_size(pieces, IWL_UCODE_REGULAR, + IWL_UCODE_SECTION_INST)); + return -1; + } + + if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) > + cfg->max_data_size) { + IWL_ERR(drv, "uCode data len %Zd too large to fit in\n", + get_sec_size(pieces, IWL_UCODE_REGULAR, + IWL_UCODE_SECTION_DATA)); + return -1; + } + + if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) > + cfg->max_inst_size) { + IWL_ERR(drv, "uCode init instr len %Zd too large to fit in\n", + get_sec_size(pieces, IWL_UCODE_INIT, + IWL_UCODE_SECTION_INST)); + return -1; + } + + if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) > + cfg->max_data_size) { + IWL_ERR(drv, "uCode init data len %Zd too large to fit in\n", + get_sec_size(pieces, IWL_UCODE_REGULAR, + IWL_UCODE_SECTION_DATA)); + return -1; + } + return 0; +} + + +/** + * iwl_ucode_callback - callback when firmware was loaded + * + * If loaded successfully, copies the firmware into buffers + * for the card to fetch (via DMA). + */ +static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context) +{ + struct iwl_drv *drv = context; + const struct iwl_cfg *cfg = cfg(drv); + struct iwl_fw *fw = &drv->fw; + struct iwl_ucode_header *ucode; + int err; + struct iwl_firmware_pieces pieces; + const unsigned int api_max = cfg->ucode_api_max; + unsigned int api_ok = cfg->ucode_api_ok; + const unsigned int api_min = cfg->ucode_api_min; + u32 api_ver; + int i; + + fw->ucode_capa.max_probe_length = 200; + fw->ucode_capa.standard_phy_calibration_size = + IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE; + + if (!api_ok) + api_ok = api_max; + + memset(&pieces, 0, sizeof(pieces)); + + if (!ucode_raw) { + if (drv->fw_index <= api_ok) + IWL_ERR(drv, + "request for firmware file '%s' failed.\n", + drv->firmware_name); + goto try_again; + } + + IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n", + drv->firmware_name, ucode_raw->size); + + /* Make sure that we got at least the API version number */ + if (ucode_raw->size < 4) { + IWL_ERR(drv, "File size way too small!\n"); + goto try_again; + } + + /* Data from ucode file: header followed by uCode images */ + ucode = (struct iwl_ucode_header *)ucode_raw->data; + + if (ucode->ver) + err = iwl_parse_v1_v2_firmware(drv, ucode_raw, &pieces); + else + err = iwl_parse_tlv_firmware(drv, ucode_raw, &pieces, + &fw->ucode_capa); + + if (err) + goto try_again; + + api_ver = IWL_UCODE_API(drv->fw.ucode_ver); + + /* + * api_ver should match the api version forming part of the + * firmware filename ... but we don't check for that and only rely + * on the API version read from firmware header from here on forward + */ + /* no api version check required for experimental uCode */ + if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) { + if (api_ver < api_min || api_ver > api_max) { + IWL_ERR(drv, + "Driver unable to support your firmware API. " + "Driver supports v%u, firmware is v%u.\n", + api_max, api_ver); + goto try_again; + } + + if (api_ver < api_ok) { + if (api_ok != api_max) + IWL_ERR(drv, "Firmware has old API version, " + "expected v%u through v%u, got v%u.\n", + api_ok, api_max, api_ver); + else + IWL_ERR(drv, "Firmware has old API version, " + "expected v%u, got v%u.\n", + api_max, api_ver); + IWL_ERR(drv, "New firmware can be obtained from " + "http://www.intellinuxwireless.org/.\n"); + } + } + + IWL_INFO(drv, "loaded firmware version %s", drv->fw.fw_version); + + /* + * For any of the failures below (before allocating pci memory) + * we will try to load a version with a smaller API -- maybe the + * user just got a corrupted version of the latest API. + */ + + IWL_DEBUG_INFO(drv, "f/w package hdr ucode version raw = 0x%x\n", + drv->fw.ucode_ver); + IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n", + get_sec_size(&pieces, IWL_UCODE_REGULAR, + IWL_UCODE_SECTION_INST)); + IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n", + get_sec_size(&pieces, IWL_UCODE_REGULAR, + IWL_UCODE_SECTION_DATA)); + IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n", + get_sec_size(&pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST)); + IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n", + get_sec_size(&pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)); + + /* Verify that uCode images will fit in card's SRAM */ + if (get_sec_size(&pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) > + cfg->max_inst_size) { + IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n", + get_sec_size(&pieces, IWL_UCODE_REGULAR, + IWL_UCODE_SECTION_INST)); + goto try_again; + } + + if (get_sec_size(&pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) > + cfg->max_data_size) { + IWL_ERR(drv, "uCode data len %Zd too large to fit in\n", + get_sec_size(&pieces, IWL_UCODE_REGULAR, + IWL_UCODE_SECTION_DATA)); + goto try_again; + } + + /* + * In mvm uCode there is no difference between data and instructions + * sections. + */ + if (!fw->mvm_fw && validate_sec_sizes(drv, &pieces, cfg)) + goto try_again; + + /* Allocate ucode buffers for card's bus-master loading ... */ + + /* Runtime instructions and 2 copies of data: + * 1) unmodified from disk + * 2) backup cache for save/restore during power-downs */ + for (i = 0; i < IWL_UCODE_TYPE_MAX; i++) + if (alloc_pci_desc(drv, &pieces, i)) + goto err_pci_alloc; + + /* Now that we can no longer fail, copy information */ + + /* + * The (size - 16) / 12 formula is based on the information recorded + * for each event, which is of mode 1 (including timestamp) for all + * new microcodes that include this information. + */ + fw->init_evtlog_ptr = pieces.init_evtlog_ptr; + if (pieces.init_evtlog_size) + fw->init_evtlog_size = (pieces.init_evtlog_size - 16)/12; + else + fw->init_evtlog_size = + cfg->base_params->max_event_log_size; + fw->init_errlog_ptr = pieces.init_errlog_ptr; + fw->inst_evtlog_ptr = pieces.inst_evtlog_ptr; + if (pieces.inst_evtlog_size) + fw->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12; + else + fw->inst_evtlog_size = + cfg->base_params->max_event_log_size; + fw->inst_errlog_ptr = pieces.inst_errlog_ptr; + + /* + * figure out the offset of chain noise reset and gain commands + * base on the size of standard phy calibration commands table size + */ + if (fw->ucode_capa.standard_phy_calibration_size > + IWL_MAX_PHY_CALIBRATE_TBL_SIZE) + fw->ucode_capa.standard_phy_calibration_size = + IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE; + + /* We have our copies now, allow OS release its copies */ + release_firmware(ucode_raw); + complete(&drv->request_firmware_complete); + + drv->op_mode = iwl_dvm_ops.start(drv->shrd->trans, &drv->fw); + + if (!drv->op_mode) + goto out_unbind; + + return; + + try_again: + /* try next, if any */ + release_firmware(ucode_raw); + if (iwl_request_firmware(drv, false)) + goto out_unbind; + return; + + err_pci_alloc: + IWL_ERR(drv, "failed to allocate pci memory\n"); + iwl_dealloc_ucode(drv); + release_firmware(ucode_raw); + out_unbind: + complete(&drv->request_firmware_complete); + device_release_driver(trans(drv)->dev); +} + +int iwl_drv_start(struct iwl_shared *shrd, + struct iwl_trans *trans, const struct iwl_cfg *cfg) +{ + struct iwl_drv *drv; + int ret; + + shrd->cfg = cfg; + + drv = kzalloc(sizeof(*drv), GFP_KERNEL); + if (!drv) { + dev_printk(KERN_ERR, trans->dev, "Couldn't allocate iwl_drv"); + return -ENOMEM; + } + drv->shrd = shrd; + shrd->drv = drv; + + init_completion(&drv->request_firmware_complete); + + ret = iwl_request_firmware(drv, true); + + if (ret) { + dev_printk(KERN_ERR, trans->dev, "Couldn't request the fw"); + kfree(drv); + shrd->drv = NULL; + } + + return ret; +} + +void iwl_drv_stop(struct iwl_shared *shrd) +{ + struct iwl_drv *drv = shrd->drv; + + wait_for_completion(&drv->request_firmware_complete); + + /* op_mode can be NULL if its start failed */ + if (drv->op_mode) + iwl_op_mode_stop(drv->op_mode); + + iwl_dealloc_ucode(drv); + + kfree(drv); + shrd->drv = NULL; +} |