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Re: Kernel only sees 1 SATA channel out of 4 - nv520 chip

On Fri, Jan 11, 2008 at 01:00:50AM -0700, Art Lemasters wrote:
>   I've installed an Abit AN52 motherboard. It has an "nvidia nf520
> single chip." It only sees one SATA channel out of four. The BIOS
> sees two hard drives. FreeBSD (live cd) sees both drives (two
> drives plugged into two of the four SATA interfaces on the motherboard.
> My guess from looking at the FreeBSD dmesg (if the dmesg was accurate
> enough) is that there are two onboard SATA controllers, each with two
> channels (four interfaces on the motherboard).

The FreeBSD dmesg could be useful.

> Here's a dmesg with a current kernel. I have a 4.0 userland installed,
> and the compile and installation of the current kernel was only to see
> if the current kernel can see more of the buses than 4.0.
> CC replies to me, especially if you want me to do any diagnostic
> configs and send or post the results. Also let me know if this should
> be copied to the tech-kern or another list.
> ================ dmesg follows ==================
> viaide1 at pci0 dev 10 function 0
> viaide1: NVIDIA MCP65 Serial ATA Controller (rev. 0xa3)
> viaide1: bus-master DMA support present
> viaide1: primary channel wired to native-PCI mode
> APSI: Picked IRQ 23 with weight 0
> viaide1: using ioapic0 pin 23 (irq 11) for native-PCI interrupt
> atabus1 at viaide1 channel 0
> viaide1: secondary channel wired to native-PCI mode
> atabus2 at viaide1 channel 1
> ...
> viaide1 port 0: device present, speed: <unknown 8>
> wd0 at atabus1 drive 0: <HDS728080PLA380>
> wd0: drive supports 16-sector PIO transfers, LBA48 addressing
> wd0: 78533 MB, 159560 cyl, 16 head, 63 sec, 512 bytes/sect x 160836480 
> sectors
> wd0: 32-bit data port
> wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
> wd0(viaide1:0:0): using PIO mode 4, Ultra-DMA mode 6 (Ultra/133) (using 
> DMA)

The "speed: <unknown 8>" is indicative of problems.  It does not
appear this chipset is AHCI-capable, otherwise I'd suggest trying

        Jonathan Kollasch

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