Hi,
Mahajan Vivek-B08308 wrote:
I've enabled MSI in ath9k driver, by simply adding
pci_enable_msi() and
pci_disable_msi() at relevant places. The MSI interrupt is allocated.
irq: irq 0 on host /s...@ffe00000/m...@41600 mapped to virtual irq 18
phy0: Atheros AR9280 MAC/BB Rev:2 AR5133 RF Rev:d0:
mem=0xf2160000, irq=18
cat /proc/interrupts
CPU0
18: 0 FSL-MSI Edge ath9k
lspci -v shows that MSI was enabled on device
But I don't get any interrupts. I've posted a question to
ath9k list, maybe folks there will have some ideas.
I just noticed a MSI enable bit in drivers/net/wireless/ath/ath9k/reg.h
as under, may be we need to trun this on:-
reg.h:1013:#define AR_PCIE_MSI 0x4094
reg.h:1014:#define AR_PCIE_MSI_ENABLE 0x00000001
According to ath9k developers adding MSI support to the driver is not
trivial.
They've tried once, it didn't work and they gave up. Any chance I can use
mini-PCI-E slot without MSI ?
Thanks.
Felix.
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