diff options
Diffstat (limited to 'drivers/net/wireless/mwifiex/pcie.c')
| -rw-r--r-- | drivers/net/wireless/mwifiex/pcie.c | 189 |
1 files changed, 188 insertions, 1 deletions
diff --git a/drivers/net/wireless/mwifiex/pcie.c b/drivers/net/wireless/mwifiex/pcie.c index 2cc9b6fca490..c16dd2cc8198 100644 --- a/drivers/net/wireless/mwifiex/pcie.c +++ b/drivers/net/wireless/mwifiex/pcie.c @@ -1,7 +1,7 @@ /* * Marvell Wireless LAN device driver: PCIE specific handling * - * Copyright (C) 2011, Marvell International Ltd. + * Copyright (C) 2011-2014, Marvell International Ltd. * * This software file (the "File") is distributed by Marvell International * Ltd. under the terms of the GNU General Public License Version 2, June 1991 @@ -37,6 +37,13 @@ static struct mwifiex_if_ops pcie_ops; static struct semaphore add_remove_card_sem; +static struct memory_type_mapping mem_type_mapping_tbl[] = { + {"ITCM", NULL, 0, 0xF0}, + {"DTCM", NULL, 0, 0xF1}, + {"SQRAM", NULL, 0, 0xF2}, + {"IRAM", NULL, 0, 0xF3}, +}; + static int mwifiex_map_pci_memory(struct mwifiex_adapter *adapter, struct sk_buff *skb, size_t size, int flags) @@ -192,6 +199,7 @@ static int mwifiex_pcie_probe(struct pci_dev *pdev, card->pcie.reg = data->reg; card->pcie.blksz_fw_dl = data->blksz_fw_dl; card->pcie.tx_buf_size = data->tx_buf_size; + card->pcie.supports_fw_dump = data->supports_fw_dump; } if (mwifiex_add_card(card, &add_remove_card_sem, &pcie_ops, @@ -221,6 +229,8 @@ static void mwifiex_pcie_remove(struct pci_dev *pdev) if (!adapter || !adapter->priv_num) return; + cancel_work_sync(&adapter->iface_work); + if (user_rmmod) { #ifdef CONFIG_PM_SLEEP if (adapter->is_suspended) @@ -307,6 +317,17 @@ static int mwifiex_read_reg(struct mwifiex_adapter *adapter, int reg, u32 *data) return 0; } +/* This function reads u8 data from PCIE card register. */ +static int mwifiex_read_reg_byte(struct mwifiex_adapter *adapter, + int reg, u8 *data) +{ + struct pcie_service_card *card = adapter->card; + + *data = ioread8(card->pci_mmap1 + reg); + + return 0; +} + /* * This function adds delay loop to ensure FW is awake before proceeding. */ @@ -2173,6 +2194,168 @@ static int mwifiex_pcie_host_to_card(struct mwifiex_adapter *adapter, u8 type, return 0; } +/* This function read/write firmware */ +static enum rdwr_status +mwifiex_pcie_rdwr_firmware(struct mwifiex_adapter *adapter, u8 doneflag) +{ + int ret, tries; + u8 ctrl_data; + struct pcie_service_card *card = adapter->card; + const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; + + ret = mwifiex_write_reg(adapter, reg->fw_dump_ctrl, FW_DUMP_HOST_READY); + if (ret) { + dev_err(adapter->dev, "PCIE write err\n"); + return RDWR_STATUS_FAILURE; + } + + for (tries = 0; tries < MAX_POLL_TRIES; tries++) { + mwifiex_read_reg_byte(adapter, reg->fw_dump_ctrl, &ctrl_data); + if (ctrl_data == FW_DUMP_DONE) + return RDWR_STATUS_SUCCESS; + if (doneflag && ctrl_data == doneflag) + return RDWR_STATUS_DONE; + if (ctrl_data != FW_DUMP_HOST_READY) { + dev_info(adapter->dev, + "The ctrl reg was changed, re-try again!\n"); + mwifiex_write_reg(adapter, reg->fw_dump_ctrl, + FW_DUMP_HOST_READY); + if (ret) { + dev_err(adapter->dev, "PCIE write err\n"); + return RDWR_STATUS_FAILURE; + } + } + usleep_range(100, 200); + } + + dev_err(adapter->dev, "Fail to pull ctrl_data\n"); + return RDWR_STATUS_FAILURE; +} + +/* This function dump firmware memory to file */ +static void mwifiex_pcie_fw_dump_work(struct mwifiex_adapter *adapter) +{ + struct pcie_service_card *card = adapter->card; + const struct mwifiex_pcie_card_reg *creg = card->pcie.reg; + unsigned int reg, reg_start, reg_end; + u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0; + enum rdwr_status stat; + u32 memory_size; + static char *env[] = { "DRIVER=mwifiex_pcie", "EVENT=fw_dump", NULL }; + + if (!card->pcie.supports_fw_dump) + return; + + for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) { + struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; + + if (entry->mem_ptr) { + vfree(entry->mem_ptr); + entry->mem_ptr = NULL; + } + entry->mem_size = 0; + } + + dev_info(adapter->dev, "== mwifiex firmware dump start ==\n"); + + /* Read the number of the memories which will dump */ + stat = mwifiex_pcie_rdwr_firmware(adapter, doneflag); + if (stat == RDWR_STATUS_FAILURE) + goto done; + + reg = creg->fw_dump_start; + mwifiex_read_reg_byte(adapter, reg, &dump_num); + + /* Read the length of every memory which will dump */ + for (idx = 0; idx < dump_num; idx++) { + struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; + + stat = mwifiex_pcie_rdwr_firmware(adapter, doneflag); + if (stat == RDWR_STATUS_FAILURE) + goto done; + + memory_size = 0; + reg = creg->fw_dump_start; + for (i = 0; i < 4; i++) { + mwifiex_read_reg_byte(adapter, reg, &read_reg); + memory_size |= (read_reg << (i * 8)); + reg++; + } + + if (memory_size == 0) { + dev_info(adapter->dev, "Firmware dump Finished!\n"); + break; + } + + dev_info(adapter->dev, + "%s_SIZE=0x%x\n", entry->mem_name, memory_size); + entry->mem_ptr = vmalloc(memory_size + 1); + entry->mem_size = memory_size; + if (!entry->mem_ptr) { + dev_err(adapter->dev, + "Vmalloc %s failed\n", entry->mem_name); + goto done; + } + dbg_ptr = entry->mem_ptr; + end_ptr = dbg_ptr + memory_size; + + doneflag = entry->done_flag; + dev_info(adapter->dev, "Start %s output, please wait...\n", + entry->mem_name); + + do { + stat = mwifiex_pcie_rdwr_firmware(adapter, doneflag); + if (RDWR_STATUS_FAILURE == stat) + goto done; + + reg_start = creg->fw_dump_start; + reg_end = creg->fw_dump_end; + for (reg = reg_start; reg <= reg_end; reg++) { + mwifiex_read_reg_byte(adapter, reg, dbg_ptr); + if (dbg_ptr < end_ptr) + dbg_ptr++; + else + dev_err(adapter->dev, + "Allocated buf not enough\n"); + } + + if (stat != RDWR_STATUS_DONE) + continue; + + dev_info(adapter->dev, "%s done: size=0x%tx\n", + entry->mem_name, dbg_ptr - entry->mem_ptr); + break; + } while (true); + } + dev_info(adapter->dev, "== mwifiex firmware dump end ==\n"); + + kobject_uevent_env(&adapter->wiphy->dev.kobj, KOBJ_CHANGE, env); + +done: + adapter->curr_mem_idx = 0; +} + +static void mwifiex_pcie_work(struct work_struct *work) +{ + struct mwifiex_adapter *adapter = + container_of(work, struct mwifiex_adapter, iface_work); + + if (test_and_clear_bit(MWIFIEX_IFACE_WORK_FW_DUMP, + &adapter->iface_work_flags)) + mwifiex_pcie_fw_dump_work(adapter); +} + +/* This function dumps FW information */ +static void mwifiex_pcie_fw_dump(struct mwifiex_adapter *adapter) +{ + if (test_bit(MWIFIEX_IFACE_WORK_FW_DUMP, &adapter->iface_work_flags)) + return; + + set_bit(MWIFIEX_IFACE_WORK_FW_DUMP, &adapter->iface_work_flags); + + schedule_work(&adapter->iface_work); +} + /* * This function initializes the PCI-E host memory space, WCB rings, etc. * @@ -2342,6 +2525,8 @@ static int mwifiex_register_dev(struct mwifiex_adapter *adapter) adapter->dev = &pdev->dev; adapter->tx_buf_size = card->pcie.tx_buf_size; + adapter->mem_type_mapping_tbl = mem_type_mapping_tbl; + adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl); strcpy(adapter->fw_name, card->pcie.firmware); return 0; @@ -2394,6 +2579,8 @@ static struct mwifiex_if_ops pcie_ops = { .cleanup_mpa_buf = NULL, .init_fw_port = mwifiex_pcie_init_fw_port, .clean_pcie_ring = mwifiex_clean_pcie_ring_buf, + .fw_dump = mwifiex_pcie_fw_dump, + .iface_work = mwifiex_pcie_work, }; /* |