Hi,
> According to the HyperTransport spec, 'En' indicate if the MSI Mapping is
> active. So it should be set when enable the MSI.
Great! This is what I needed to get MSI going on my MCP51 board. I added some
ids, but I think there were not necessary, as I only got
PCI: 0000:00:00.0: enabled HT MSI mapping
PCI: 0000:00:10.1: enabled HT MSI mapping
were those devices are:
00:00.0 RAM memory: nVidia Corporation C51 Host Bridge (rev a2)
Subsystem: ASUSTeK Computer Inc. Unknown device 81c0
Flags: bus master, 66MHz, fast devsel, latency 0
Capabilities: [44] HyperTransport: Slave or Primary Interface
Capabilities: [e0] HyperTransport: MSI Mapping Enable+ Fixed-
00: de 10 f0 02 06 00 b0 00 a2 00 00 05 00 00 80 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 c0 81
30: 00 00 00 00 44 00 00 00 00 00 00 00 ff 00 00 00
According to your patch, you named this device
+#define PCI_DEVICE_ID_NVIDIA_NFORCE_C51_MEMC0 0x02F0
So is the lspci database not correct or your naming? lspci lists some
memcontrollers for me, but they don't seem to have MSI specific items.
00:10.1 Audio device: nVidia Corporation MCP51 High Definition Audio (rev a2)
Subsystem: ASUSTeK Computer Inc. Unknown device 81cb
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 319
Memory at fe024000 (32-bit, non-prefetchable) [size=16K]
Capabilities: [44] Power Management version 2
Capabilities: [50] Message Signalled Interrupts: Mask+ 64bit+
Queue=0/0 Enable+
Capabilities: [6c] HyperTransport: MSI Mapping Enable+ Fixed+
00: de 10 6c 02 06 04 b0 00 a2 00 03 04 00 00 80 00
10: 00 40 02 fe 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 cb 81
30: 00 00 00 00 44 00 00 00 00 00 00 00 05 02 02 05
Yay:
cat /proc/interrupts
319: 26 9357 PCI-MSI-edge HDA Intel
So, now sata_nv and nvidia binary graphics driver could activate MSI, as
well. :-)
One thing I noticed in the patch:
+ if (((bridge_dev = pci_find_slot(0, 0)) != NULL) &&
You rather want to use pci_get_bus_and_slot instead, as pci_find_slot is
deprecated.
Thanks!
--
(°= =°)
//\ Prakash Punnoor /\\
V_/ \_V
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