Hi Greg, As you pointed out, PCH_PHUB patch should be implemented with sysfs interface.
PCH_PHUB driver need access 15,361 Byte option ROM, but on i386, the buffer will be 4096B. With this kind of way, we need several buffer. Another way to implement PCH_PHUB driver is mmap the kernel space to user space. Perhaps it’s better. Anyway would you please give us a right way for this driver. Hi OKI-sans, Would you please send those email directly to Meego-Dev next time? Best Regards, Qi. From: Tomoya MORINAGA [mailto:[email protected]] Sent: Tuesday, August 10, 2010 2:41 PM To: Wang, Qi; Wang, Yong Y Cc: Khor, Andrew Chih Howe; okada; shimizu; miyata; Masayuki Ohtake Subject: About sysfs data size limitaion Hi Qi-san I am studying sysfs. I have a question for sysfs data size limitation. I find the following description. Documentation/filesystems/sysfs.txt - The buffer will always be PAGE_SIZE bytes in length. On i386, this is 4096. Option ROM data is 15361Byte. Can Phub driver with sysfs I/F write/read 15361byte data? Thanks, MORINAGA /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_ Tomoya Morinaga OKI SEMICONDUCTOR CO., LTD.
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