Re: [Sdio-linux-devel] Kernel panic for sd memory

[boku <bok...@gm...>]

I've checked my SDHC driver and found it doesn't support DMA but report it
can support.

This comes out a thought that if no DMA is support by SDHC, the
pReq->pDataBuffer is simply as a data buffer pointer
instead of being a pointer to the SGlist data structure. Is it? I think
that's the problem. Sorry about this confusion.

However, I met another problem while keep going on.
=> While I try to mount the sd memory device, it complains:
         /dev/sdio0p1 is not a valid block device

I followed the steps shown in the sdio-linux reference document. Below are
some info I did.


*-sh-2.05b# ls -l /dev/sdio*
*brw-r--r--  1 root root 254,   1 Jun  8  2007 /dev/sdio0p1

*-sh-2.05b# cat /proc/devices
*Character devices:
  1 mem
  2 pty
  3 ttyp
  4 /dev/vc/0
  4 tty
  5 /dev/tty
  5 /dev/console
  5 /dev/ptmx
  7 vcs
 10 misc
 13 input
 21 sg
 29 fb
 81 video4linux
 86 ch
 90 mtd
128 ptm
136 pts
204 ttyAM
204 ttyAMA

Block devices:
  1 ramdisk
  7 loop
 31 mtdblock
254 sdmem

*-sh-2.05b# mount -t vfat /dev/sdio0p1 /mnt/sdmem/
*+SDIO Memory Function: Open
-SDIO Memory Function: Open
+SDIO Memory Function: Release(INST=0xc7263c00)
-SDIO Memory Function: Release
*mount: /dev/sdio0p1 is not a valid block device
*


The message of insert module is as follows:
.......
SDIO Memory Function: Probe - creating disk
+SDIO Memory Function: CreateDisk
SDIO Memory Function: blk_init_Q using DiskRequest
SDIO Memory Function: block size 512
SDIO Memory Function: setting block size 512
SDIO Memory Function: CreateDisk: size 1983488 (Size 992000,
FileSysBlockSize 512)
+SDIO Memory Function: Open
-SDIO Memory Function: Open
SDIO Memory Function: ReadBlocks reading, count/size length 8/512 4096 cmd:
18
SDIO MUSTANG HOST SetUpHCDDMA (RX) Blocks:8, BlockLen:512
SDIO MUSTANG HOST HcdRequest RX Data Transfer, Blocks:8, BlockLen:512
HcdRequest - RespType:1, Flgs=0x00004201, Command:18 , Arg:0x0,
txMode=0x00000014
SDIO Bus Driver: HCD returned status:3 on request: 0xC7295F00,
(CMD:18)(Flags:00004201)
HcdSDInterrupt, ints: 0x281F errors: 0x0, sigenables: 0x2000, statenable:
0x733F errorenables:0x7F7F
GetResp=00000012 00000900
HcdSDInterrupt - RX Data Transfer Complete with status:0
-HcdSDInterrupt
SDIO Bus Driver: Sync-Op signal waiting....
SDIO Bus Driver: SDIO_HandleHcdEvent, event type 0x4, HCD:0xBF0178D8
SDIO Bus Driver: _SDIO_HandleHcdEvent, event type 0x4, HCD:0xBF0178D8
+SDIO Bus Driver: Handling Transfer Done (CMD:18, Status:0, Flags=00004201,
Req=0xc7295f00) from HCD:0xBF0178D8
SDIO Bus Driver: Queue idle
SDIO Bus Driver: Calling completion on request:0xC7295F00, CMD:18
-SDIO Bus Driver: Transfer Done Handled
-SDIO Memory Function: DiskRequest
+SDIO Memory Function: Release(INST=0xc7245c00)
-SDIO Memory Function: Release
-SDIO Memory Function: CreateDisk major: 254, minors: 8, first_minor: 0
-SDIO Memory Function: CreateDisk