DMA mode on Dragon Ultra SiS645DX chipset

[Johnyp]

Hey all
I know that my gentoo box is not using DMA mode. I thought it was because i didn't select the right IDE chipset in kernel, but my chip is not listed there.

Any ideas on what can be done?
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[agent_jdh]

The SiS645 chipset is supported through the SIS5513 driver right near the bottom of the ATA/ATAPI section in kernel config. Add support for that device (NOT as a module, compile it into your kernel like the rest of the IDE stuff), recompile kernel, re-install etc and it should work OK.
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Jingle Jangle Jewellery

[Johnyp]

Great!
Where did you check the comatibility of the chipset? (just so i don't have to ask this here next time).

Also, a n00b question. Once i get the proper option selected, to compile kernel i need to run "make" command?

Once i do that - where is the new kernel placed and how do i replace current one with the new one?

THanks!
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[agent_jdh]

Read the Gentoo install guide for instructions on how to build and install a kernel. You must have done it when you installed Gentoo? Generally, make && make modules_install (for a 2.6 kernel), and the cd into arch/i386/boot (for i386, obviously), and cp bzImage to /boot/bzImage-2.6.whatever, then make sure your boot loader points at the new kernel.

In kernel config (make menuconfig), if you scroll down to the relevant option you can use the left and right arrow keys to move the ncurses selection to 'Help' which will give you info about the driver, in this case, what chipsets it supports. The 645 is listed.
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Jingle Jangle Jewellery