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Date:	Thu, 17 Jul 2014 09:01:32 +0530
From:	Pratyush Anand <>
To:	Murali Karicheri <>
Cc:	"" <>,
	"" <>,
	Russell King <>,
	Grant Likely <>,
	Rob Herring <>,
	Bjorn Helgaas <>,
	Richard Zhu <>,
	Kishon Vijay Abraham I <>,
	Marek Vasut <>, Arnd Bergmann <>,
	Pawel Moll <>,
	Mark Rutland <>,
	Ian Campbell <>,
	Kumar Gala <>,
	Randy Dunlap <>
Subject: Re: [PATCH v5 2/5] PCI: designware: refactor MSI code to work with
 v3.65 dw hardware

On Thu, Jul 17, 2014 at 12:38:03AM +0800, Murali Karicheri wrote:
> Keystone PCI controller is based on v3.65 version of the DW
> PCI h/w that implements MSI controller registers in application
> space compared to the newer version. This requires updates to
> the DW core API to support the PCI controller driver based on
> this old DW hardware. Add msi_irq_set()/clear() API functions to
> allow Set/Clear MSI IRQ enable bit in the application register.
> Also the old h/w uses MSI_IRQ register in application register
> space to raise MSI IRQ to the RC from EP. Current code uses the
> standard mechanism as per PCI spec. So add another API get_msi_data()
> to get the address of this register so that common code can be
> re-used on old h/w.
> Signed-off-by: Murali Karicheri <>
> Acked-by: Mohit Kumar <>
> Acked-by: Jingoo Han <>
> Acked-by: Santosh Shilimkar <>

Reviewed-by: Pratyush Anand <>
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