Re: something wrong when I read infomation from portG ,s3c44b0

["zhang guocheng" <gczh1006@xxxxxxxxx>]

#define PCONC   (unsigned int *)0x01D20010
#define PUPC      (unsigned int *)0x01D20018
#define PCONG   (unsigned int *)0x01D20040
#define PUPG      (unsigned int *)0x01D20048

I also tried to do like this:
u32 save_C __attribute__((aligned(4)));
u16 save_G __attribute__((aligned(4)));
but it seems ineffective .

2007/3/28, Zhu Tom-a2289c <ling.zhu@xxxxxxxxxxxx>:
> It seems that the address of PCONC or PUPC is not in a word alignment.
>
> Say, 0x.....2 or 0x...6 etc.
>
> Tom
>
> -----Original Message-----
> From: zhang guocheng [mailto:gczh1006@xxxxxxxxx]
> Sent: 2007年3月27日 22:52
> To: Zhu Tom-a2289c
> Subject: Re: something wrong when I read infomation from portG ,s3c44b0
>
> thanks
>
> the register PCONG[0:15] , R/W
>
> sorry,maybe I didn't discribe clearly
> when I read PUPC,PCONC
> save_C=inl(PCONC);
> save_PC=inw(PUPC);
>
> it looks well, just when the driver initiaization runs to reading the configuration of PCONG,the error  occures.
>
>
> 2007/3/28, Zhu Tom-a2289c <ling.zhu@xxxxxxxxxxxx>:
> > Looks like the PCONG/PCONC/PUPC is not aligned in word?
> >
> > Tom
> >
> > -----Original Message-----
> > From: linux-arm-bounces@xxxxxxxxxxxxxxxxxxxxxx
> > [mailto:linux-arm-bounces@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of zhang
> > guocheng
> > Sent: 2007年3月27日 21:29
> > To: linux-arm
> > Subject: something wrong when I read infomation from portG ,s3c44b0
> >
> > hi,everyone
> >      first ,please excuse my poor english,these is one problem that has confused me for a few days,so I hope these is someone could help me.
> >      first I introduce some infomation about my board. the cpu is s3c44b0.
> >      when I read the configuration register of portG(PCONG),which is a output/input port of 8bit.
> >   save_G=inw(PCONG);
> > the initialization of my driver will be wrong, while everything is ok when I read the configuration register of portC(PCONC),or PUPC,etc.
> >   save_C=inl(PCONC);
> >   save_PC=inw(PUPC);
> >
> > the error happened when I execute the conmand  #insmod abc (abc is a module , my driver) the log will be at the end.
> > #lsmod
> > module                           size      used by        not tainted
> > abc                                3300     1(initializing)
> >
> > log:
> > Unhandled fault: alignment exception (93) at 0x00000001
> > fault-common.c(97): start_code=0xc5c0040, start_stack=0xc5fff84)
> > Internal error: Oops: 0
> > CPU: 0
> > pc : [<0c01ee6c>] lr : [<00030001>] Not tainted sp : 0c607e1c ip :
> > 00000004 fp : 0c607eb0
> > r10: 0c5ad000 r9 : 20000013 r8 : 00000060
> > r7 : ffffffea r6 : 0c5a6000 r5 : e1d230b0 r4 : 20000013
> > r3 : 00000000 r2 : 0c60601c r1 : 0c607e1c r0 : 00000004
> > Flags: nZCv IRQs off FIQs on Mode SVC_32 Segment user
> > Control: 0
> > Process insmod (pid: 25, stackpage=0c607000)
> > Stack:
> > 0c607e00: 00030001 0c01ee6c 60000093 ffffffff 00000004
> > 0c607e20: 00000000 00030001 0c050678 0c050118 00000000 0000102b
> > 0c33a740 0c31a800
> > 0c607e40: 0c5b7460 ffffffea 00000000 20000013 0c2c62b8 00000000
> > 00000003 00000001
> > 0c607e60: 00000001 000001f0 0c2c60fc 0c607eb0 0c607e7c 0c037758
> > 0c037000 0c63aee0
> > 0c607e80: 0c2c62b4 0c5b74cc 00000000 20000013 0c2c62b8 00000000
> > 00000003 e1d230b0
> > 0c607ea0: 0c607ee8 0c607f10 0c607eb4 0c01fc98 0c01ee3c 00000000
> > 0c5accb8 000000ff
> > 0c607ec0: 01d20040 0c5acc30 00000000 0c5a6000 ffffffea 00000060
> > 00000004 0c5ad000
> > 0c607ee0: 0c607f10 0c5acc34 0c607efc 0c5acbe8 0c5aca38 20000013
> > ffffffff 00000000
> > 0c607f00: 0c5ac000 0c607fac 0c607f14 0c02466c 0c5ac9d0 0c5a6000
> > 0c5a7000 0c5ae560
> > 0c607f20: 0c647ce0 00000060 0c2c55c8 0c5ac060 00000d20 00000000
> > 00000000 00000000
> > 0c607f40: 00000000 00000000 00000000 00000000 00000000 00000000
> > 00000000 00000000
> > 0c607f60: 00000000 00000000 00000000 00000000 00000000 00000000
> > 00000000 00000000
> > 0c607f80: 00000000 0c5feee8 0c66d000 0c5e1f54 0c606000 0c01ab20
> > 00000080 00000d20
> > 0c607fa0: 00000000 0c607fb0 0c01a980 0c024000 0c5feee8 0c01b1b4
> > 0c5feee8 0c5ad000
> > 0c607fc0: 00000000 0c5acc30 0c5feee8 0c66d000 0c5e1f54 0c5ac000
> > 0c5feee8 00000002
> > 0c607fe0: 00000d20 00000000 0c5accc0 0c5fbd2c 0c5c22f0 0c5d68e4
> > 60000010 0c5feee8
> > Backtrace:
> > Function entered at [<0c01ee2c>] from [<0c01fc98>]
> > r5 = 0C607EE8 r4 = E1D230B0
> > Function entered at [<0c5ac9c0>] from [<0c02466c>]
> > r5 = 0C5AC000 r4 = 00000000
> > Function entered at [<0c023ff0>] from [<0c01a980>]
> > Code: e50be08c e3cd2d7f (e594303c) e3c2203f e50b3088 pid 25: failed 11
> >
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