diff options
| author | Zong-Zhe Yang <kevin_yang@realtek.com> | 2021-03-09 09:01:21 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2021-03-15 11:27:13 +0300 |
| commit | 13ce240a932fe9c809ec6e79ffc5a4d4ecf534ee (patch) | |
| tree | 3e99dc323cac81c61c22b82d03316fa35d96df32 /drivers/net/wireless/realtek/rtw88/rtw8822c.c | |
| parent | 50773696301bdd083af57bad82bb99779719f0c7 (diff) | |
| download | linux-13ce240a932fe9c809ec6e79ffc5a4d4ecf534ee.tar.xz | |
rtw88: 8822c: support FW crash dump when FW crash
Although FW crash logs are already supported for dumping in driver, the
logs may not be sufficient to analyze field issues. To improve this part,
we add a support to dump FW memory.
When driver receives FW crash notifications, driver uses DDMA, which is a
HW ability, to copy specified FW memory to FW fifo. Driver can then dump
these information from FW fifo. With this support, not only FW crash log
but also specified FW memory will be dumped while FW crash. Besides,
specified registers are also dumped.
This feature is implemeted on 8822C first due to difference of FW layouts
between ICs. In addition, we add a debugfs to trigger FW crash. It can
simulate the process of crash, dump and reset. Through it, we can also
check if a reset is ongoing.
Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210309060121.9099-1-pkshih@realtek.com
Diffstat (limited to 'drivers/net/wireless/realtek/rtw88/rtw8822c.c')
| -rw-r--r-- | drivers/net/wireless/realtek/rtw88/rtw8822c.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtw88/rtw8822c.c b/drivers/net/wireless/realtek/rtw88/rtw8822c.c index dd560c28abb2..a1f1da3db029 100644 --- a/drivers/net/wireless/realtek/rtw88/rtw8822c.c +++ b/drivers/net/wireless/realtek/rtw88/rtw8822c.c @@ -1396,6 +1396,15 @@ static int rtw8822c_mac_init(struct rtw_dev *rtwdev) return 0; } +static void rtw8822c_dump_fw_crash(struct rtw_dev *rtwdev) +{ + rtw_dump_reg(rtwdev, 0x0, 0x2000, "rtw8822c reg_"); + rtw_dump_fw(rtwdev, OCPBASE_DMEM_88XX, 0x10000, "rtw8822c DMEM_"); + rtw_dump_fw(rtwdev, OCPBASE_IMEM_88XX, 0x10000, "rtw8822c IMEM_"); + rtw_dump_fw(rtwdev, OCPBASE_EMEM_88XX, 0x20000, "rtw8822c EMEM_"); + rtw_dump_fw(rtwdev, OCPBASE_ROM_88XX, 0x10000, "rtw8822c ROM_"); +} + static void rtw8822c_rstb_3wire(struct rtw_dev *rtwdev, bool enable) { if (enable) { @@ -3971,6 +3980,7 @@ static struct rtw_chip_ops rtw8822c_ops = { .query_rx_desc = rtw8822c_query_rx_desc, .set_channel = rtw8822c_set_channel, .mac_init = rtw8822c_mac_init, + .dump_fw_crash = rtw8822c_dump_fw_crash, .read_rf = rtw_phy_read_rf, .write_rf = rtw_phy_write_rf_reg_mix, .set_tx_power_index = rtw8822c_set_tx_power_index, |