Hi, I've reverse engineered some registers in the CK804. I believe with this information all SATA ports can be enabled without any lost interrupts.
More on fixing the SATA issue later on, now what I've found.
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LPC bridge PCI config registers:
0x7c:0x0000ffff
- bitmap of masked pci irqs?
- PIRQ[ABCD] possibly?
0x7c:0x00f00000
- sata at f8 - port 1
0x7c:0x0f000000
- sata at f7 - port 1
0x80:0xf0000000
- sata at f7 - port 0
0x80:0x0f000000
- sata at f8 - port 0
0x80:0x0000f000
- EHCI
0x84:0x00000f00
- NIC
0x84:0x0000000f
- OHCI
known values of nibbles:
0 - unrouted?
1 - irq 23
8 - irq 20
c - irq 12
d - irq 21
e - irq 14
f - irq 15
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When the interrupts of both SATA ports on each controller are
routed the same, the regular drivers should work. I've only
tested this with NetBSD's viaide(4), I have no idea if these
may also apply to the ADMA mode.
On many boards these registers are set in mptable.c.
I hope someone can make good use of this.
Jonathan Kollasch
pgpOgMJtb45aa.pgp
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