Messages in this thread | | | From | plazmcman@softhome ... | Subject | 2.6.x DMA ALI chipset bugs | Date | Tue, 13 Apr 2004 21:40:54 -0600 |
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I have an old IBM ThinkPad (266MHz) with an ALi chipset. lspci -v | grep -i ali reports:
[addr] Host bridge: ... M1531 Subsystem: ... M1531 [addr] ISA bridge: ... M1533 Subsystem: ...M1533 [addr] IDE interface: ... M5229 [addr] Bridge: ... M7101
Under kernel 2.4.22, DMA worked fine (~9MB/s hda). With 2.6.(0,3,4,5), the machine won't work with DMA enabeled at boot. Kernel panics due to "can't find init", and stuff like "can't execute /etc/rc.d/rc.S", or "/sbin/agetty", etc.
I _do_ have kernel support (built-in) for ALiM15x3. I can boot up the computer (kernel argument ide=nodma), and then attempt to turn DMA on - it will sometimes succed, _but_ there is no performance gain (~4MB/s - ugh).
Any workarounds, patches, help?
Thanks, Brannon Klopfer - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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