On 09/02/2016 03:50 AM, Simon Wunderlich wrote:
Hi,
we are trying to integrate a RTL8192CU based WiFi adapter (TP-Link TL-WL822N)
on a PowerPC based platform running a vendor-supplied/modified 3.12 kernel
using compat-wireless (I've tried 2016-01-06 and 2016-06-20 versions). While
the adapter works fine on my Laptop (using Debian 4.6 and 4.7 kernels), it
seems the firmware loading fails on the PowerPC box. Here is some output from
the kernel log:
[ 36.945820] rtl8192cu: Chip version 0x11
[ 37.026208] rtl8192cu: MAC address: ec:08:6b:15:38:0e
[ 37.031301] rtl8192cu: Board Type 0
[ 37.035074] rtl_usb: rx_max_size 15360, rx_urb_num 8, in_ep 1
[ 37.040911] rtl8192cu: Loading firmware rtlwifi/rtl8192cufw_TMSC.bin
[ 37.049583] usbcore: registered new interface driver rtl8192cu
[...]
[ 221.588911] rtl8192cu:_ResetDigitalProcedure1():<0-0> #####=> 8051 reset
failed!.........................
[ 221.637599] rtl8192cu: MAC auto ON okay!
[ 221.674610] rtl8192cu: Tx queue select: 0x05
[ 233.233554] rtl8192c_common:_rtl92c_fw_free_to_go():<0-0> Polling FW ready
fail!! REG_MCUFWDL:0x00030006 .
[ 233.233566] rtl8192c_common:rtl92c_download_fw():<0-0> Firmware is not
ready to run!
The outputs at 221 starts when I enable hostapd with a minimal AP-starting
configuration.
Do you have any recommendations where the firmware loading problems could come
from, and where we could start to debug? Any pointers would be appreciated.
Simon,
The patch I included in my previous E-mail, and attached here, does get the
firmware loaded correctly. There is still a problem that prevents
authentication. I'm still looking for that issue.
Larry
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192c/fw_common.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192c/fw_common.c
index 43fcb25..cd7ae70 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192c/fw_common.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192c/fw_common.c
@@ -74,18 +74,19 @@ static void _rtl92c_fw_block_write(struct ieee80211_hw *hw,
struct rtl_priv *rtlpriv = rtl_priv(hw);
u32 blocksize = sizeof(u32);
u8 *bufferptr = (u8 *)buffer;
- u32 *pu4byteptr = (u32 *)buffer;
+ __le32 *pu4byteptr = (__le32 *)buffer;
u32 i, offset, blockcount, remainsize;
+ u32 data;
blockcount = size / blocksize;
remainsize = size % blocksize;
for (i = 0; i < blockcount; i++) {
offset = i * blocksize;
+ data = le32_to_cpu(*(pu4byteptr + i));
rtl_write_dword(rtlpriv, (FW_8192C_START_ADDRESS + offset),
- *(pu4byteptr + i));
+ data);
}
-
if (remainsize) {
offset = blockcount * blocksize;
bufferptr += offset;
