rsi_91x: Failed to read status register / FIRMWARE Assert issues

[Eugeniy.Paltsev@synopsys.com (Eugeniy Paltsev)]

Hi Amitkumar,

I'm seeing quite a strange behavior of RedPine RS9113SB module.
I tried to use it as wifi hotspot, and sometimes I fail to connect to it.
Moreover after that failure RSI driver starts to flood me with following messages:
Issue 1:
--------------------->8--------------------
rsi_91x: rsi_handle_card_ready: card ready indication in invalid state 9.
rsi_91x: rsi_interrupt_handler: ==> FIRMWARE Assert <==
rsi_91x: rsi_interrupt_handler: Firmware Status is 0x79
rsi_91x: rsi_core_xmit: FSM state not open
rsi_91x: rsi_core_xmit: Failed to queue packet
rsi_91x: rsi_core_xmit: FSM state not open
rsi_91x: rsi_core_xmit: Failed to queue packet
--------------------->8--------------------

Sometimes messages in same situation can be different (Issue 2):
--------------------->8--------------------
rsi_91x: rsi_read_pkt: pkt from invalid queue: 2
rsi_91x: Failed to read the packet
rsi_91x: rsi_sdio_write_register_multiple: Synch Cmd53 write failed -16
rsi_91x: rsi_sdio_host_intf_write_pkt: Unable to write onto the card: -16
rsi_91x: rsi_send_data_pkt: Failed to write pkt
rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
--------------------->8--------------------

NOTE:
I use vanilla Linux kernel v4.17-rc2
  rsi_91x: FW Version     : 1.6.1
  rsi_91x: Firmware file  : rsi/rs9113_wlan_bt_dual_mode.rps
Also these issues reproduce on vanilla v4.16 Linux kernel
  rsi_91x: FW Version     : 1.5.3
  rsi_91x: Firmware file  : rsi/rs9113_wlan_qspi.rps


Wifi hotspot is started with next commands:
--------------------->8--------------------
# echo 1 > /proc/sys/net/ipv4/ip_forward
# iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
# iptables -A FORWARD -i eth0 -o wlan0 -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
# iptables -A FORWARD -i wlan0 -o eth0 -j ACCEPT
# hostapd -B /etc/hostapd.conf

# cat /etc/hostapd.conf
interface=wlan0
logger_syslog=-1
logger_syslog_level=2
logger_stdout=-1
logger_stdout_level=2
ctrl_interface=/var/run/hostapd
ctrl_interface_group=0
ssid=HSDK_wifi
hw_mode=g
channel=1
beacon_int=100
dtim_period=2
max_num_sta=255
rts_threshold=-1
fragm_threshold=-1
macaddr_acl=0
auth_algs=3
ignore_broadcast_ssid=0
wmm_enabled=1
wmm_ac_bk_cwmin=4
wmm_ac_bk_cwmax=10
wmm_ac_bk_aifs=7
wmm_ac_bk_txop_limit=0
wmm_ac_bk_acm=0
wmm_ac_be_aifs=3
wmm_ac_be_cwmin=4
wmm_ac_be_cwmax=10
wmm_ac_be_txop_limit=0
wmm_ac_be_acm=0
wmm_ac_vi_aifs=2
wmm_ac_vi_cwmin=3
wmm_ac_vi_cwmax=4
wmm_ac_vi_txop_limit=94
wmm_ac_vi_acm=0
wmm_ac_vo_aifs=2
wmm_ac_vo_cwmin=2
wmm_ac_vo_cwmax=3
wmm_ac_vo_txop_limit=47
wmm_ac_vo_acm=0
eapol_key_index_workaround=0
own_ip_addr=127.0.0.1
--------------------->8--------------------


I tried to reproduce this issues with extended RSI log enabled, this is log tail
for "Issue 2":
--------------------->8--------------------
rsi_91x: Pkt pending interrupt
rsi_91x: rsi_mgmt_pkt_recv: Msg Len: 0, Msg Type:    8
rsi_91x: rsi_sdio_host_intf_write_pkt: Successfully written onto card
rsi_91x: Beacon event
rsi_91x: rsi_core_qos_processor: Queue number = 4
rsi_91x: rsi_send_beacon: Added to beacon queue
rsi_91x: rsi_sdio_host_intf_write_pkt: Successfully written onto card
rsi_91x: rsi_core_qos_processor: Queue number = 5
rsi_91x: rsi_interrupt_handler: Intr_status = 8 8 4
rsi_91x: Pkt pending interrupt
rsi_91x: rsi_mgmt_pkt_recv: Msg Len: 0, Msg Type:    1
rsi_91x: rsi_handle_ta_confirm_type: Invalid TA confirm pkt received
rsi_91x: rsi_sdio_host_intf_write_pkt: Successfully written onto card
rsi_91x: rsi_core_qos_processor: Queue number = 4
rsi_91x: rsi_sdio_host_intf_write_pkt: Successfully written onto card
rsi_91x: rsi_core_qos_processor: Queue number = 4
rsi_91x: rsi_interrupt_handler: Intr_status = 8 8 4
rsi_91x: Pkt pending interrupt
rsi_91x: rsi_read_pkt: pkt from invalid queue: 2
rsi_91x: rsi_sdio_host_intf_write_pkt: Successfully written onto card
rsi_91x: Failed to read the packet
rsi_91x: rsi_core_qos_processor: Queue number = 255
rsi_91x: rsi_core_qos_processor: No More Pkt
rsi_91x: rsi_core_qos_processor: Queue number = 255
rsi_91x: rsi_core_qos_processor: No More Pkt
rsi_91x: rsi_core_xmit: ===> Scheduling TX thead <===
rsi_91x: rsi_core_qos_processor: Queue number = 1
rsi_91x: rsi_sdio_write_register_multiple: Synch Cmd53 write failed -16
rsi_91x: rsi_sdio_host_intf_write_pkt: Unable to write onto the card: -16
rsi_91x: rsi_sdio_host_intf_write_pkt: Successfully written onto card
rsi_91x: rsi_send_data_pkt: Failed to write pkt
rsi_91x: rsi_core_xmit: ===> Scheduling TX thead <===
rsi_91x: rsi_core_qos_processor: Queue number = 1
rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
rsi_91x: rsi_core_xmit: ===> Scheduling TX thead <===
rsi_91x: rsi_core_qos_processor: Queue number = 1
rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
--------------------->8--------------------

Any ideas what could be wrong?

-- 
 Eugeniy Paltsev