diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/bluetooth/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/bluetooth/btmrvl_debugfs.c | 31 | ||||
| -rw-r--r-- | drivers/bluetooth/btmrvl_drv.h | 20 | ||||
| -rw-r--r-- | drivers/bluetooth/btmrvl_main.c | 7 | ||||
| -rw-r--r-- | drivers/bluetooth/btmrvl_sdio.c | 300 | ||||
| -rw-r--r-- | drivers/bluetooth/btmrvl_sdio.h | 5 |
6 files changed, 364 insertions, 0 deletions
diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig index 4547dc238fc7..364f080768d0 100644 --- a/drivers/bluetooth/Kconfig +++ b/drivers/bluetooth/Kconfig @@ -210,6 +210,7 @@ config BT_MRVL_SDIO tristate "Marvell BT-over-SDIO driver" depends on BT_MRVL && MMC select FW_LOADER + select WANT_DEV_COREDUMP help The driver for Marvell Bluetooth chipsets with SDIO interface. diff --git a/drivers/bluetooth/btmrvl_debugfs.c b/drivers/bluetooth/btmrvl_debugfs.c index 023d35e3c7a7..1828ed8cae7a 100644 --- a/drivers/bluetooth/btmrvl_debugfs.c +++ b/drivers/bluetooth/btmrvl_debugfs.c @@ -167,6 +167,35 @@ static const struct file_operations btmrvl_hscmd_fops = { .llseek = default_llseek, }; +static ssize_t btmrvl_fwdump_write(struct file *file, const char __user *ubuf, + size_t count, loff_t *ppos) +{ + struct btmrvl_private *priv = file->private_data; + char buf[16]; + bool result; + + memset(buf, 0, sizeof(buf)); + + if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) + return -EFAULT; + + if (strtobool(buf, &result)) + return -EINVAL; + + if (!result) + return -EINVAL; + + btmrvl_firmware_dump(priv); + + return count; +} + +static const struct file_operations btmrvl_fwdump_fops = { + .write = btmrvl_fwdump_write, + .open = simple_open, + .llseek = default_llseek, +}; + void btmrvl_debugfs_init(struct hci_dev *hdev) { struct btmrvl_private *priv = hci_get_drvdata(hdev); @@ -197,6 +226,8 @@ void btmrvl_debugfs_init(struct hci_dev *hdev) priv, &btmrvl_hscmd_fops); debugfs_create_file("hscfgcmd", 0644, dbg->config_dir, priv, &btmrvl_hscfgcmd_fops); + debugfs_create_file("fw_dump", 0200, dbg->config_dir, + priv, &btmrvl_fwdump_fops); dbg->status_dir = debugfs_create_dir("status", hdev->debugfs); debugfs_create_u8("curpsmode", 0444, dbg->status_dir, diff --git a/drivers/bluetooth/btmrvl_drv.h b/drivers/bluetooth/btmrvl_drv.h index 38ad66289ad6..330f8f84928d 100644 --- a/drivers/bluetooth/btmrvl_drv.h +++ b/drivers/bluetooth/btmrvl_drv.h @@ -32,6 +32,24 @@ /* Time to wait for command response in millisecond */ #define WAIT_UNTIL_CMD_RESP 5000 +enum rdwr_status { + RDWR_STATUS_SUCCESS = 0, + RDWR_STATUS_FAILURE = 1, + RDWR_STATUS_DONE = 2 +}; + +#define FW_DUMP_MAX_NAME_LEN 8 +#define FW_DUMP_HOST_READY 0xEE +#define FW_DUMP_DONE 0xFF +#define FW_DUMP_READ_DONE 0xFE + +struct memory_type_mapping { + u8 mem_name[FW_DUMP_MAX_NAME_LEN]; + u8 *mem_ptr; + u32 mem_size; + u8 done_flag; +}; + struct btmrvl_thread { struct task_struct *task; wait_queue_head_t wait_q; @@ -81,6 +99,7 @@ struct btmrvl_private { u8 *payload, u16 nb); int (*hw_wakeup_firmware) (struct btmrvl_private *priv); int (*hw_process_int_status) (struct btmrvl_private *priv); + void (*firmware_dump)(struct btmrvl_private *priv); spinlock_t driver_lock; /* spinlock used by driver */ #ifdef CONFIG_DEBUG_FS void *debugfs_data; @@ -151,6 +170,7 @@ int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv); int btmrvl_enable_ps(struct btmrvl_private *priv); int btmrvl_prepare_command(struct btmrvl_private *priv); int btmrvl_enable_hs(struct btmrvl_private *priv); +void btmrvl_firmware_dump(struct btmrvl_private *priv); #ifdef CONFIG_DEBUG_FS void btmrvl_debugfs_init(struct hci_dev *hdev); diff --git a/drivers/bluetooth/btmrvl_main.c b/drivers/bluetooth/btmrvl_main.c index 10973ac03fc9..30939c993d94 100644 --- a/drivers/bluetooth/btmrvl_main.c +++ b/drivers/bluetooth/btmrvl_main.c @@ -22,6 +22,7 @@ #include <linux/of.h> #include <net/bluetooth/bluetooth.h> #include <net/bluetooth/hci_core.h> +#include <linux/mmc/sdio_func.h> #include "btmrvl_drv.h" #include "btmrvl_sdio.h" @@ -335,6 +336,12 @@ int btmrvl_prepare_command(struct btmrvl_private *priv) return ret; } +void btmrvl_firmware_dump(struct btmrvl_private *priv) +{ + if (priv->firmware_dump) + priv->firmware_dump(priv); +} + static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb) { int ret = 0; diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c index 416d792176c2..0057c0b7a776 100644 --- a/drivers/bluetooth/btmrvl_sdio.c +++ b/drivers/bluetooth/btmrvl_sdio.c @@ -24,6 +24,7 @@ #include <linux/mmc/sdio_ids.h> #include <linux/mmc/sdio_func.h> #include <linux/module.h> +#include <linux/devcoredump.h> #include <net/bluetooth/bluetooth.h> #include <net/bluetooth/hci_core.h> @@ -33,6 +34,24 @@ #define VERSION "1.0" +static struct memory_type_mapping mem_type_mapping_tbl[] = { + {"ITCM", NULL, 0, 0xF0}, + {"DTCM", NULL, 0, 0xF1}, + {"SQRAM", NULL, 0, 0xF2}, + {"APU", NULL, 0, 0xF3}, + {"CIU", NULL, 0, 0xF4}, + {"ICU", NULL, 0, 0xF5}, + {"MAC", NULL, 0, 0xF6}, + {"EXT7", NULL, 0, 0xF7}, + {"EXT8", NULL, 0, 0xF8}, + {"EXT9", NULL, 0, 0xF9}, + {"EXT10", NULL, 0, 0xFA}, + {"EXT11", NULL, 0, 0xFB}, + {"EXT12", NULL, 0, 0xFC}, + {"EXT13", NULL, 0, 0xFD}, + {"EXTLAST", NULL, 0, 0xFE}, +}; + /* The btmrvl_sdio_remove() callback function is called * when user removes this module from kernel space or ejects * the card from the slot. The driver handles these 2 cases @@ -122,6 +141,9 @@ static const struct btmrvl_sdio_card_reg btmrvl_reg_8897 = { .int_read_to_clear = true, .host_int_rsr = 0x01, .card_misc_cfg = 0xcc, + .fw_dump_ctrl = 0xe2, + .fw_dump_start = 0xe3, + .fw_dump_end = 0xea, }; static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = { @@ -130,6 +152,7 @@ static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = { .reg = &btmrvl_reg_8688, .support_pscan_win_report = false, .sd_blksz_fw_dl = 64, + .supports_fw_dump = false, }; static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = { @@ -138,6 +161,7 @@ static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = { .reg = &btmrvl_reg_87xx, .support_pscan_win_report = false, .sd_blksz_fw_dl = 256, + .supports_fw_dump = false, }; static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = { @@ -146,6 +170,7 @@ static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = { .reg = &btmrvl_reg_87xx, .support_pscan_win_report = false, .sd_blksz_fw_dl = 256, + .supports_fw_dump = false, }; static const struct btmrvl_sdio_device btmrvl_sdio_sd8887 = { @@ -154,6 +179,7 @@ static const struct btmrvl_sdio_device btmrvl_sdio_sd8887 = { .reg = &btmrvl_reg_8887, .support_pscan_win_report = true, .sd_blksz_fw_dl = 256, + .supports_fw_dump = false, }; static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = { @@ -162,6 +188,7 @@ static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = { .reg = &btmrvl_reg_8897, .support_pscan_win_report = true, .sd_blksz_fw_dl = 256, + .supports_fw_dump = true, }; static const struct sdio_device_id btmrvl_sdio_ids[] = { @@ -1080,6 +1107,277 @@ static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv) return ret; } +static void btmrvl_sdio_dump_regs(struct btmrvl_private *priv) +{ + struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; + int ret = 0; + unsigned int reg, reg_start, reg_end; + char buf[256], *ptr; + u8 loop, func, data; + int MAX_LOOP = 2; + + btmrvl_sdio_wakeup_fw(priv); + sdio_claim_host(card->func); + + for (loop = 0; loop < MAX_LOOP; loop++) { + memset(buf, 0, sizeof(buf)); + ptr = buf; + + if (loop == 0) { + /* Read the registers of SDIO function0 */ + func = loop; + reg_start = 0; + reg_end = 9; + } else { + func = 2; + reg_start = 0; + reg_end = 0x09; + } + + ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ", + func, reg_start, reg_end); + for (reg = reg_start; reg <= reg_end; reg++) { + if (func == 0) + data = sdio_f0_readb(card->func, reg, &ret); + else + data = sdio_readb(card->func, reg, &ret); + + if (!ret) { + ptr += sprintf(ptr, "%02x ", data); + } else { + ptr += sprintf(ptr, "ERR"); + break; + } + } + + BT_INFO("%s", buf); + } + + sdio_release_host(card->func); +} + +/* This function read/write firmware */ +static enum +rdwr_status btmrvl_sdio_rdwr_firmware(struct btmrvl_private *priv, + u8 doneflag) +{ + struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; + int ret, tries; + u8 ctrl_data = 0; + + sdio_writeb(card->func, FW_DUMP_HOST_READY, card->reg->fw_dump_ctrl, + &ret); + + if (ret) { + BT_ERR("SDIO write err"); + return RDWR_STATUS_FAILURE; + } + + for (tries = 0; tries < MAX_POLL_TRIES; tries++) { + ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl, + &ret); + + if (ret) { + BT_ERR("SDIO read err"); + return RDWR_STATUS_FAILURE; + } + + if (ctrl_data == FW_DUMP_DONE) + break; + if (doneflag && ctrl_data == doneflag) + return RDWR_STATUS_DONE; + if (ctrl_data != FW_DUMP_HOST_READY) { + BT_INFO("The ctrl reg was changed, re-try again!"); + sdio_writeb(card->func, FW_DUMP_HOST_READY, + card->reg->fw_dump_ctrl, &ret); + if (ret) { + BT_ERR("SDIO write err"); + return RDWR_STATUS_FAILURE; + } + } + usleep_range(100, 200); + } + + if (ctrl_data == FW_DUMP_HOST_READY) { + BT_ERR("Fail to pull ctrl_data"); + return RDWR_STATUS_FAILURE; + } + + return RDWR_STATUS_SUCCESS; +} + +/* This function dump sdio register and memory data */ +static void btmrvl_sdio_dump_firmware(struct btmrvl_private *priv) +{ + struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; + int ret = 0; + unsigned int reg, reg_start, reg_end; + enum rdwr_status stat; + u8 *dbg_ptr, *end_ptr, *fw_dump_data, *fw_dump_ptr; + u8 dump_num, idx, i, read_reg, doneflag = 0; + u32 memory_size, fw_dump_len = 0; + + /* dump sdio register first */ + btmrvl_sdio_dump_regs(priv); + + if (!card->supports_fw_dump) { + BT_ERR("Firmware dump not supported for this card!"); + 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; + } + + btmrvl_sdio_wakeup_fw(priv); + sdio_claim_host(card->func); + + BT_INFO("== btmrvl firmware dump start =="); + + stat = btmrvl_sdio_rdwr_firmware(priv, doneflag); + if (stat == RDWR_STATUS_FAILURE) + goto done; + + reg = card->reg->fw_dump_start; + /* Read the number of the memories which will dump */ + dump_num = sdio_readb(card->func, reg, &ret); + + if (ret) { + BT_ERR("SDIO read memory length err"); + goto done; + } + + /* 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 = btmrvl_sdio_rdwr_firmware(priv, doneflag); + if (stat == RDWR_STATUS_FAILURE) + goto done; + + memory_size = 0; + reg = card->reg->fw_dump_start; + for (i = 0; i < 4; i++) { + read_reg = sdio_readb(card->func, reg, &ret); + if (ret) { + BT_ERR("SDIO read err"); + goto done; + } + memory_size |= (read_reg << i*8); + reg++; + } + + if (memory_size == 0) { + BT_INFO("Firmware dump finished!"); + break; + } + + BT_INFO("%s_SIZE=0x%x", entry->mem_name, memory_size); + entry->mem_ptr = vzalloc(memory_size + 1); + entry->mem_size = memory_size; + if (!entry->mem_ptr) { + BT_ERR("Vzalloc %s failed", entry->mem_name); + goto done; + } + + fw_dump_len += (strlen("========Start dump ") + + strlen(entry->mem_name) + + strlen("========\n") + + (memory_size + 1) + + strlen("\n========End dump========\n")); + + dbg_ptr = entry->mem_ptr; + end_ptr = dbg_ptr + memory_size; + + doneflag = entry->done_flag; + BT_INFO("Start %s output, please wait...", + entry->mem_name); + + do { + stat = btmrvl_sdio_rdwr_firmware(priv, doneflag); + if (stat == RDWR_STATUS_FAILURE) + goto done; + + reg_start = card->reg->fw_dump_start; + reg_end = card->reg->fw_dump_end; + for (reg = reg_start; reg <= reg_end; reg++) { + *dbg_ptr = sdio_readb(card->func, reg, &ret); + if (ret) { + BT_ERR("SDIO read err"); + goto done; + } + if (dbg_ptr < end_ptr) + dbg_ptr++; + else + BT_ERR("Allocated buffer not enough"); + } + + if (stat != RDWR_STATUS_DONE) { + continue; + } else { + BT_INFO("%s done: size=0x%tx", + entry->mem_name, + dbg_ptr - entry->mem_ptr); + break; + } + } while (1); + } + + BT_INFO("== btmrvl firmware dump end =="); + +done: + sdio_release_host(card->func); + + if (fw_dump_len == 0) + return; + + fw_dump_data = vzalloc(fw_dump_len+1); + if (!fw_dump_data) { + BT_ERR("Vzalloc fw_dump_data fail!"); + return; + } + fw_dump_ptr = fw_dump_data; + + /* Dump all the memory data into single file, a userspace script will + be used to split all the memory data to multiple files*/ + BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump start"); + for (idx = 0; idx < dump_num; idx++) { + struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; + + if (entry->mem_ptr) { + strcpy(fw_dump_ptr, "========Start dump "); + fw_dump_ptr += strlen("========Start dump "); + + strcpy(fw_dump_ptr, entry->mem_name); + fw_dump_ptr += strlen(entry->mem_name); + + strcpy(fw_dump_ptr, "========\n"); + fw_dump_ptr += strlen("========\n"); + + memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size); + fw_dump_ptr += entry->mem_size; + + strcpy(fw_dump_ptr, "\n========End dump========\n"); + fw_dump_ptr += strlen("\n========End dump========\n"); + + vfree(mem_type_mapping_tbl[idx].mem_ptr); + mem_type_mapping_tbl[idx].mem_ptr = NULL; + } + } + + /* fw_dump_data will be free in device coredump release function + after 5 min*/ + dev_coredumpv(&priv->btmrvl_dev.hcidev->dev, fw_dump_data, + fw_dump_len, GFP_KERNEL); + BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump end"); +} + static int btmrvl_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) { @@ -1103,6 +1401,7 @@ static int btmrvl_sdio_probe(struct sdio_func *func, card->reg = data->reg; card->sd_blksz_fw_dl = data->sd_blksz_fw_dl; card->support_pscan_win_report = data->support_pscan_win_report; + card->supports_fw_dump = data->supports_fw_dump; } if (btmrvl_sdio_register_dev(card) < 0) { @@ -1134,6 +1433,7 @@ static int btmrvl_sdio_probe(struct sdio_func *func, priv->hw_host_to_card = btmrvl_sdio_host_to_card; priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw; priv->hw_process_int_status = btmrvl_sdio_process_int_status; + priv->firmware_dump = btmrvl_sdio_dump_firmware; if (btmrvl_register_hdev(priv)) { BT_ERR("Register hdev failed!"); diff --git a/drivers/bluetooth/btmrvl_sdio.h b/drivers/bluetooth/btmrvl_sdio.h index 453559f98a75..1a3bd064c442 100644 --- a/drivers/bluetooth/btmrvl_sdio.h +++ b/drivers/bluetooth/btmrvl_sdio.h @@ -81,6 +81,9 @@ struct btmrvl_sdio_card_reg { bool int_read_to_clear; u8 host_int_rsr; u8 card_misc_cfg; + u8 fw_dump_ctrl; + u8 fw_dump_start; + u8 fw_dump_end; }; struct btmrvl_sdio_card { @@ -90,6 +93,7 @@ struct btmrvl_sdio_card { const char *firmware; const struct btmrvl_sdio_card_reg *reg; bool support_pscan_win_report; + bool supports_fw_dump; u16 sd_blksz_fw_dl; u8 rx_unit; struct btmrvl_private *priv; @@ -101,6 +105,7 @@ struct btmrvl_sdio_device { const struct btmrvl_sdio_card_reg *reg; const bool support_pscan_win_report; u16 sd_blksz_fw_dl; + bool supports_fw_dump; }; |