diff options
author | Taku Izumi <izumi.taku@jp.fujitsu.com> | 2016-10-14 20:27:45 +0900 |
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committer | David S. Miller <davem@davemloft.net> | 2016-10-14 12:04:57 -0400 |
commit | b6ba737d0b290b272452a2362088222a248fc8da (patch) | |
tree | 8b4fdafab65ef761d6052461d0848386c8c389de /drivers/net/fjes/fjes_hw.c | |
parent | 82f6aea801e3732fe4bf41af46ebe352bf24fde8 (diff) | |
download | op-kernel-dev-b6ba737d0b290b272452a2362088222a248fc8da.zip op-kernel-dev-b6ba737d0b290b272452a2362088222a248fc8da.tar.gz |
fjes: ethtool -w and -W support for fjes driver
This patch adds implementation of supporting
ethtool -w and -W for fjes driver.
You can enable and disable firmware debug mode by
using ethtool -W, and also retrieve firmware
activity information by using ethtool -w.
This is useful for debugging.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/fjes/fjes_hw.c')
-rw-r--r-- | drivers/net/fjes/fjes_hw.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/drivers/net/fjes/fjes_hw.c b/drivers/net/fjes/fjes_hw.c index dba59dc..9c652c0 100644 --- a/drivers/net/fjes/fjes_hw.c +++ b/drivers/net/fjes/fjes_hw.c @@ -343,6 +343,9 @@ int fjes_hw_init(struct fjes_hw *hw) ret = fjes_hw_setup(hw); + hw->hw_info.trace = vzalloc(FJES_DEBUG_BUFFER_SIZE); + hw->hw_info.trace_size = FJES_DEBUG_BUFFER_SIZE; + return ret; } @@ -351,6 +354,18 @@ void fjes_hw_exit(struct fjes_hw *hw) int ret; if (hw->base) { + + if (hw->debug_mode) { + /* disable debug mode */ + mutex_lock(&hw->hw_info.lock); + fjes_hw_stop_debug(hw); + mutex_unlock(&hw->hw_info.lock); + } + vfree(hw->hw_info.trace); + hw->hw_info.trace = NULL; + hw->hw_info.trace_size = 0; + hw->debug_mode = 0; + ret = fjes_hw_reset(hw); if (ret) pr_err("%s: reset error", __func__); @@ -1175,3 +1190,125 @@ static void fjes_hw_epstop_task(struct work_struct *work) } } } + +int fjes_hw_start_debug(struct fjes_hw *hw) +{ + union fjes_device_command_req *req_buf = hw->hw_info.req_buf; + union fjes_device_command_res *res_buf = hw->hw_info.res_buf; + enum fjes_dev_command_response_e ret; + int page_count; + int result = 0; + void *addr; + int i; + + if (!hw->hw_info.trace) + return -EPERM; + memset(hw->hw_info.trace, 0, FJES_DEBUG_BUFFER_SIZE); + + memset(req_buf, 0, hw->hw_info.req_buf_size); + memset(res_buf, 0, hw->hw_info.res_buf_size); + + req_buf->start_trace.length = + FJES_DEV_COMMAND_START_DBG_REQ_LEN(hw->hw_info.trace_size); + req_buf->start_trace.mode = hw->debug_mode; + req_buf->start_trace.buffer_len = hw->hw_info.trace_size; + page_count = hw->hw_info.trace_size / FJES_DEBUG_PAGE_SIZE; + for (i = 0; i < page_count; i++) { + addr = ((u8 *)hw->hw_info.trace) + i * FJES_DEBUG_PAGE_SIZE; + req_buf->start_trace.buffer[i] = + (__le64)(page_to_phys(vmalloc_to_page(addr)) + + offset_in_page(addr)); + } + + res_buf->start_trace.length = 0; + res_buf->start_trace.code = 0; + + trace_fjes_hw_start_debug_req(req_buf); + ret = fjes_hw_issue_request_command(hw, FJES_CMD_REQ_START_DEBUG); + trace_fjes_hw_start_debug(res_buf); + + if (res_buf->start_trace.length != + FJES_DEV_COMMAND_START_DBG_RES_LEN) { + result = -ENOMSG; + trace_fjes_hw_start_debug_err("Invalid res_buf"); + } else if (ret == FJES_CMD_STATUS_NORMAL) { + switch (res_buf->start_trace.code) { + case FJES_CMD_REQ_RES_CODE_NORMAL: + result = 0; + break; + default: + result = -EPERM; + break; + } + } else { + switch (ret) { + case FJES_CMD_STATUS_UNKNOWN: + result = -EPERM; + break; + case FJES_CMD_STATUS_TIMEOUT: + trace_fjes_hw_start_debug_err("Busy Timeout"); + result = -EBUSY; + break; + case FJES_CMD_STATUS_ERROR_PARAM: + case FJES_CMD_STATUS_ERROR_STATUS: + default: + result = -EPERM; + break; + } + } + + return result; +} + +int fjes_hw_stop_debug(struct fjes_hw *hw) +{ + union fjes_device_command_req *req_buf = hw->hw_info.req_buf; + union fjes_device_command_res *res_buf = hw->hw_info.res_buf; + enum fjes_dev_command_response_e ret; + int result = 0; + + if (!hw->hw_info.trace) + return -EPERM; + + memset(req_buf, 0, hw->hw_info.req_buf_size); + memset(res_buf, 0, hw->hw_info.res_buf_size); + req_buf->stop_trace.length = FJES_DEV_COMMAND_STOP_DBG_REQ_LEN; + + res_buf->stop_trace.length = 0; + res_buf->stop_trace.code = 0; + + ret = fjes_hw_issue_request_command(hw, FJES_CMD_REQ_STOP_DEBUG); + trace_fjes_hw_stop_debug(res_buf); + + if (res_buf->stop_trace.length != FJES_DEV_COMMAND_STOP_DBG_RES_LEN) { + trace_fjes_hw_stop_debug_err("Invalid res_buf"); + result = -ENOMSG; + } else if (ret == FJES_CMD_STATUS_NORMAL) { + switch (res_buf->stop_trace.code) { + case FJES_CMD_REQ_RES_CODE_NORMAL: + result = 0; + hw->debug_mode = 0; + break; + default: + result = -EPERM; + break; + } + } else { + switch (ret) { + case FJES_CMD_STATUS_UNKNOWN: + result = -EPERM; + break; + case FJES_CMD_STATUS_TIMEOUT: + result = -EBUSY; + trace_fjes_hw_stop_debug_err("Busy Timeout"); + break; + case FJES_CMD_STATUS_ERROR_PARAM: + case FJES_CMD_STATUS_ERROR_STATUS: + default: + result = -EPERM; + break; + } + } + + return result; +} |