diff options
Diffstat (limited to 'drivers/misc/iwmc3200top/fw-download.c')
| -rw-r--r-- | drivers/misc/iwmc3200top/fw-download.c | 358 |
1 files changed, 0 insertions, 358 deletions
diff --git a/drivers/misc/iwmc3200top/fw-download.c b/drivers/misc/iwmc3200top/fw-download.c deleted file mode 100644 index e27afde..0000000 --- a/drivers/misc/iwmc3200top/fw-download.c +++ /dev/null @@ -1,358 +0,0 @@ -/* - * iwmc3200top - Intel Wireless MultiCom 3200 Top Driver - * drivers/misc/iwmc3200top/fw-download.c - * - * Copyright (C) 2009 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version - * 2 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 - * 02110-1301, USA. - * - * - * Author Name: Maxim Grabarnik <maxim.grabarnink@intel.com> - * - - * - */ - -#include <linux/firmware.h> -#include <linux/mmc/sdio_func.h> -#include <linux/slab.h> -#include <asm/unaligned.h> - -#include "iwmc3200top.h" -#include "log.h" -#include "fw-msg.h" - -#define CHECKSUM_BYTES_NUM sizeof(u32) - -/** - init parser struct with file - */ -static int iwmct_fw_parser_init(struct iwmct_priv *priv, const u8 *file, - size_t file_size, size_t block_size) -{ - struct iwmct_parser *parser = &priv->parser; - struct iwmct_fw_hdr *fw_hdr = &parser->versions; - - LOG_TRACE(priv, FW_DOWNLOAD, "-->\n"); - - LOG_INFO(priv, FW_DOWNLOAD, "file_size=%zd\n", file_size); - - parser->file = file; - parser->file_size = file_size; - parser->cur_pos = 0; - parser->entry_point = 0; - parser->buf = kzalloc(block_size, GFP_KERNEL); - if (!parser->buf) { - LOG_ERROR(priv, FW_DOWNLOAD, "kzalloc error\n"); - return -ENOMEM; - } - parser->buf_size = block_size; - - /* extract fw versions */ - memcpy(fw_hdr, parser->file, sizeof(struct iwmct_fw_hdr)); - LOG_INFO(priv, FW_DOWNLOAD, "fw versions are:\n" - "top %u.%u.%u gps %u.%u.%u bt %u.%u.%u tic %s\n", - fw_hdr->top_major, fw_hdr->top_minor, fw_hdr->top_revision, - fw_hdr->gps_major, fw_hdr->gps_minor, fw_hdr->gps_revision, - fw_hdr->bt_major, fw_hdr->bt_minor, fw_hdr->bt_revision, - fw_hdr->tic_name); - - parser->cur_pos += sizeof(struct iwmct_fw_hdr); - - LOG_TRACE(priv, FW_DOWNLOAD, "<--\n"); - return 0; -} - -static bool iwmct_checksum(struct iwmct_priv *priv) -{ - struct iwmct_parser *parser = &priv->parser; - __le32 *file = (__le32 *)parser->file; - int i, pad, steps; - u32 accum = 0; - u32 checksum; - u32 mask = 0xffffffff; - - pad = (parser->file_size - CHECKSUM_BYTES_NUM) % 4; - steps = (parser->file_size - CHECKSUM_BYTES_NUM) / 4; - - LOG_INFO(priv, FW_DOWNLOAD, "pad=%d steps=%d\n", pad, steps); - - for (i = 0; i < steps; i++) - accum += le32_to_cpu(file[i]); - - if (pad) { - mask <<= 8 * (4 - pad); - accum += le32_to_cpu(file[steps]) & mask; - } - - checksum = get_unaligned_le32((__le32 *)(parser->file + - parser->file_size - CHECKSUM_BYTES_NUM)); - - LOG_INFO(priv, FW_DOWNLOAD, - "compare checksum accum=0x%x to checksum=0x%x\n", - accum, checksum); - - return checksum == accum; -} - -static int iwmct_parse_next_section(struct iwmct_priv *priv, const u8 **p_sec, - size_t *sec_size, __le32 *sec_addr) -{ - struct iwmct_parser *parser = &priv->parser; - struct iwmct_dbg *dbg = &priv->dbg; - struct iwmct_fw_sec_hdr *sec_hdr; - - LOG_TRACE(priv, FW_DOWNLOAD, "-->\n"); - - while (parser->cur_pos + sizeof(struct iwmct_fw_sec_hdr) - <= parser->file_size) { - - sec_hdr = (struct iwmct_fw_sec_hdr *) - (parser->file + parser->cur_pos); - parser->cur_pos += sizeof(struct iwmct_fw_sec_hdr); - - LOG_INFO(priv, FW_DOWNLOAD, - "sec hdr: type=%s addr=0x%x size=%d\n", - sec_hdr->type, sec_hdr->target_addr, - sec_hdr->data_size); - - if (strcmp(sec_hdr->type, "ENT") == 0) - parser->entry_point = le32_to_cpu(sec_hdr->target_addr); - else if (strcmp(sec_hdr->type, "LBL") == 0) - strcpy(dbg->label_fw, parser->file + parser->cur_pos); - else if (((strcmp(sec_hdr->type, "TOP") == 0) && - (priv->barker & BARKER_DNLOAD_TOP_MSK)) || - ((strcmp(sec_hdr->type, "GPS") == 0) && - (priv->barker & BARKER_DNLOAD_GPS_MSK)) || - ((strcmp(sec_hdr->type, "BTH") == 0) && - (priv->barker & BARKER_DNLOAD_BT_MSK))) { - *sec_addr = sec_hdr->target_addr; - *sec_size = le32_to_cpu(sec_hdr->data_size); - *p_sec = parser->file + parser->cur_pos; - parser->cur_pos += le32_to_cpu(sec_hdr->data_size); - return 1; - } else if (strcmp(sec_hdr->type, "LOG") != 0) - LOG_WARNING(priv, FW_DOWNLOAD, - "skipping section type %s\n", - sec_hdr->type); - - parser->cur_pos += le32_to_cpu(sec_hdr->data_size); - LOG_INFO(priv, FW_DOWNLOAD, - "finished with section cur_pos=%zd\n", parser->cur_pos); - } - - LOG_TRACE(priv, INIT, "<--\n"); - return 0; -} - -static int iwmct_download_section(struct iwmct_priv *priv, const u8 *p_sec, - size_t sec_size, __le32 addr) -{ - struct iwmct_parser *parser = &priv->parser; - struct iwmct_fw_load_hdr *hdr = (struct iwmct_fw_load_hdr *)parser->buf; - const u8 *cur_block = p_sec; - size_t sent = 0; - int cnt = 0; - int ret = 0; - u32 cmd = 0; - - LOG_TRACE(priv, FW_DOWNLOAD, "-->\n"); - LOG_INFO(priv, FW_DOWNLOAD, "Download address 0x%x size 0x%zx\n", - addr, sec_size); - - while (sent < sec_size) { - int i; - u32 chksm = 0; - u32 reset = atomic_read(&priv->reset); - /* actual FW data */ - u32 data_size = min(parser->buf_size - sizeof(*hdr), - sec_size - sent); - /* Pad to block size */ - u32 trans_size = (data_size + sizeof(*hdr) + - IWMC_SDIO_BLK_SIZE - 1) & - ~(IWMC_SDIO_BLK_SIZE - 1); - ++cnt; - - /* in case of reset, interrupt FW DOWNLAOD */ - if (reset) { - LOG_INFO(priv, FW_DOWNLOAD, - "Reset detected. Abort FW download!!!"); - ret = -ECANCELED; - goto exit; - } - - memset(parser->buf, 0, parser->buf_size); - cmd |= IWMC_OPCODE_WRITE << CMD_HDR_OPCODE_POS; - cmd |= IWMC_CMD_SIGNATURE << CMD_HDR_SIGNATURE_POS; - cmd |= (priv->dbg.direct ? 1 : 0) << CMD_HDR_DIRECT_ACCESS_POS; - cmd |= (priv->dbg.checksum ? 1 : 0) << CMD_HDR_USE_CHECKSUM_POS; - hdr->data_size = cpu_to_le32(data_size); - hdr->target_addr = addr; - - /* checksum is allowed for sizes divisible by 4 */ - if (data_size & 0x3) - cmd &= ~CMD_HDR_USE_CHECKSUM_MSK; - - memcpy(hdr->data, cur_block, data_size); - - - if (cmd & CMD_HDR_USE_CHECKSUM_MSK) { - - chksm = data_size + le32_to_cpu(addr) + cmd; - for (i = 0; i < data_size >> 2; i++) - chksm += ((u32 *)cur_block)[i]; - - hdr->block_chksm = cpu_to_le32(chksm); - LOG_INFO(priv, FW_DOWNLOAD, "Checksum = 0x%X\n", - hdr->block_chksm); - } - - LOG_INFO(priv, FW_DOWNLOAD, "trans#%d, len=%d, sent=%zd, " - "sec_size=%zd, startAddress 0x%X\n", - cnt, trans_size, sent, sec_size, addr); - - if (priv->dbg.dump) - LOG_HEXDUMP(FW_DOWNLOAD, parser->buf, trans_size); - - - hdr->cmd = cpu_to_le32(cmd); - /* send it down */ - /* TODO: add more proper sending and error checking */ - ret = iwmct_tx(priv, parser->buf, trans_size); - if (ret != 0) { - LOG_INFO(priv, FW_DOWNLOAD, - "iwmct_tx returned %d\n", ret); - goto exit; - } - - addr = cpu_to_le32(le32_to_cpu(addr) + data_size); - sent += data_size; - cur_block = p_sec + sent; - - if (priv->dbg.blocks && (cnt + 1) >= priv->dbg.blocks) { - LOG_INFO(priv, FW_DOWNLOAD, - "Block number limit is reached [%d]\n", - priv->dbg.blocks); - break; - } - } - - if (sent < sec_size) - ret = -EINVAL; -exit: - LOG_TRACE(priv, FW_DOWNLOAD, "<--\n"); - return ret; -} - -static int iwmct_kick_fw(struct iwmct_priv *priv, bool jump) -{ - struct iwmct_parser *parser = &priv->parser; - struct iwmct_fw_load_hdr *hdr = (struct iwmct_fw_load_hdr *)parser->buf; - int ret; - u32 cmd; - - LOG_TRACE(priv, FW_DOWNLOAD, "-->\n"); - - memset(parser->buf, 0, parser->buf_size); - cmd = IWMC_CMD_SIGNATURE << CMD_HDR_SIGNATURE_POS; - if (jump) { - cmd |= IWMC_OPCODE_JUMP << CMD_HDR_OPCODE_POS; - hdr->target_addr = cpu_to_le32(parser->entry_point); - LOG_INFO(priv, FW_DOWNLOAD, "jump address 0x%x\n", - parser->entry_point); - } else { - cmd |= IWMC_OPCODE_LAST_COMMAND << CMD_HDR_OPCODE_POS; - LOG_INFO(priv, FW_DOWNLOAD, "last command\n"); - } - - hdr->cmd = cpu_to_le32(cmd); - - LOG_HEXDUMP(FW_DOWNLOAD, parser->buf, sizeof(*hdr)); - /* send it down */ - /* TODO: add more proper sending and error checking */ - ret = iwmct_tx(priv, parser->buf, IWMC_SDIO_BLK_SIZE); - if (ret) - LOG_INFO(priv, FW_DOWNLOAD, "iwmct_tx returned %d", ret); - - LOG_TRACE(priv, FW_DOWNLOAD, "<--\n"); - return 0; -} - -int iwmct_fw_load(struct iwmct_priv *priv) -{ - const u8 *fw_name = FW_NAME(FW_API_VER); - const struct firmware *raw; - const u8 *pdata; - size_t len; - __le32 addr; - int ret; - - - LOG_INFO(priv, FW_DOWNLOAD, "barker download request 0x%x is:\n", - priv->barker); - LOG_INFO(priv, FW_DOWNLOAD, "******* Top FW %s requested ********\n", - (priv->barker & BARKER_DNLOAD_TOP_MSK) ? "was" : "not"); - LOG_INFO(priv, FW_DOWNLOAD, "******* GPS FW %s requested ********\n", - (priv->barker & BARKER_DNLOAD_GPS_MSK) ? "was" : "not"); - LOG_INFO(priv, FW_DOWNLOAD, "******* BT FW %s requested ********\n", - (priv->barker & BARKER_DNLOAD_BT_MSK) ? "was" : "not"); - - - /* get the firmware */ - ret = request_firmware(&raw, fw_name, &priv->func->dev); - if (ret < 0) { - LOG_ERROR(priv, FW_DOWNLOAD, "%s request_firmware failed %d\n", - fw_name, ret); - goto exit; - } - - if (raw->size < sizeof(struct iwmct_fw_sec_hdr)) { - LOG_ERROR(priv, FW_DOWNLOAD, "%s smaller then (%zd) (%zd)\n", - fw_name, sizeof(struct iwmct_fw_sec_hdr), raw->size); - goto exit; - } - - LOG_INFO(priv, FW_DOWNLOAD, "Read firmware '%s'\n", fw_name); - - /* clear parser struct */ - ret = iwmct_fw_parser_init(priv, raw->data, raw->size, priv->trans_len); - if (ret < 0) { - LOG_ERROR(priv, FW_DOWNLOAD, - "iwmct_parser_init failed: Reason %d\n", ret); - goto exit; - } - - if (!iwmct_checksum(priv)) { - LOG_ERROR(priv, FW_DOWNLOAD, "checksum error\n"); - ret = -EINVAL; - goto exit; - } - - /* download firmware to device */ - while (iwmct_parse_next_section(priv, &pdata, &len, &addr)) { - ret = iwmct_download_section(priv, pdata, len, addr); - if (ret) { - LOG_ERROR(priv, FW_DOWNLOAD, - "%s download section failed\n", fw_name); - goto exit; - } - } - - ret = iwmct_kick_fw(priv, !!(priv->barker & BARKER_DNLOAD_JUMP_MSK)); - -exit: - kfree(priv->parser.buf); - release_firmware(raw); - return ret; -} |
