USB无线网卡驱动在ARM上的移植问题

123456ds

USB无线网卡驱动在ARM上的移植问题 [复制链接]

无线网卡:wl-167g
ARM板:S3C2410
内核版本:2.4.18
gcc版本:2.95.3
驱动版本RT73_Linux_STA_Drv1.0.4.0
编译驱动通过,并生成rt73.o,使用insmod rt73.o可以将模块加载到系统中,显示:
rtusb init ====>
usb.c: registered new driver rt73
但是使用ifconfig rausb0 显示网卡信息时发现
rausb0    Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
         BROADCAST MULTICAST  MTU:1500  Metric:1
         RX packets:0 errors:0 dropped:0 overruns:0 frame:0
         TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:64
         RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
物理地址显然不正确.并且在使用ifconfig rausb0 up命令之后,会显示
rt73 driver version - 1.0.4.0
Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = c0aa8000
*pgd = 30add801, *pmd = 30add801, *pte = 00000000, *ppte = 00000000
Internal error: Oops: ffffffff
CPU: 0
pc : []    lr : []    Not tainted
sp : c0aaddfc  ip : 000001f0  fp : c0aade20
r10: 00000000  r9 : c73a7130  r8 : 00000000
r7 : 00000001  r6 : c025c6c0  r5 : 000001f0  r4 : c025c6c0
r3 : 000001f0  r2 : 00000000  r1 : 00000000  r0 : c025c6c0
Flags: nzCv  IRQs on  FIQs on  Mode SVC_32  Segment user
Control: C000317F  Table: 30AA8000  DAC: 00000015
Process ifconfig (pid: 67, stackpage=c0aad000)
Stack: (0xc0aaddec to 0xc0aae000)
dde0:                            c0042594 c0042154 20000013 ffffffff c025c6c0
de00: 000001f0 00000018 00000001 00000000 00000000 c0aade38 c0aade24 c0042594
de20: c0042110 00000978 c73a7148 c0aade98 c0aade3c c7338308 c0042498 c73a70b0
de40: c73a7080 c73a7098 c7380000 c0227ea0 c7380000 00000000 00000000 c0aadf0c
de60: bffffc84 c09fc400 c7320398 00000000 c0227ea0 00000000 00001002 00000000
de80: c0aadf0c 00000000 c0155458 c0aadeac c0aade9c c015547c c0155430 c09fc400
dea0: c0aadec4 c0aadeb0 c0152a2c c015546c c09fc400 00001043 c0aadee4 c0aadec8
dec0: c0154188 c0152970 00000000 c09fc400 00000000 c0aadf1c c0aadf54 c0aadee8
dee0: c0189244 c0154138 00000014 00000000 00000000 00000000 00008914 00031043
df00: 00000000 000d9d28 bffffed4 73756172 00003062 00000000 00000000 00031043
df20: 00000000 000d9d28 bffffed4 00008914 bffffc84 c09eab60 bffffc84 ffffffe7
df40: c0aac000 000b82b0 c0aadf70 c0aadf58 c018b82c c0188f30 c3968d20 00008914
df60: 00000003 c0aadf80 c0aadf74 c014b6f4 c018b508 c0aadfa4 c0aadf84 c0059e00
df80: c014b6dc bffffc84 bffffedc 00000004 00000036 c001d9a4 00000000 c0aadfa8
dfa0: c001d820 c0059c14 bffffc84 c00238fc 00000003 00008914 bffffc84 00001043
dfc0: bffffc84 bffffedc 00000004 000b8238 00000000 0003c298 000b82b0 00000003
dfe0: 00000002 bffffbb8 00019bd0 00072824 20000010 00000003 bf7ff5ff f7ff7eff
Backtrace:
Function entered at [] from []
Function entered at [] from []
r5 = C73A7148  r4 = 00000978
Function entered at [] from []
Function entered at [] from []
r4 = C09FC400
Function entered at [] from []
r5 = 00001043  r4 = C09FC400
Function entered at [] from []
r7 = C0AADF1C  r6 = 00000000  r5 = C09FC400  r4 = 00000000
Function entered at [] from []
Function entered at [] from []
r6 = 00000003  r5 = 00008914  r4 = C3968D20
Function entered at [] from []
Function entered at [] from []
r8 = C001D9A4  r7 = 00000036  r6 = 00000004  r5 = BFFFFEDC
r4 = BFFFFC84
Code: e3530000 0a000002 e20c3e1f e3530020 (15822000)
Kernel panic: Aiee, killing interrupt handler!
In interrupt handler - not syncing

我发现在这个结构体中,将 WirelessPacket申请的空间减少,则在kmalloc时就会运行一段时间后才报错,估计是申请内存的问题
可是开发板的内存有64M呢,应该没问题啊
typedef struct __TX_BUFFER{
TXD_STRUC TxDesc;
HEADER_802_11 NullFrame;
PSPOLL_FRAME PsPollPacket;
RTS_FRAME RTSFrame;
UCHAR WirelessPacket[2342];
} TX_BUFFER, *PTX_BUFFER;

yulian0523

64M很多吗，申请不释放也很快就给填满了。

zhaonash

那个结构体kmalloc也没多大空间吧，难道连2k多空间也没有了？？第一次申请空间的时候就报错啊