linux-kernel - Re: PCI Endpoint - Missing inbound mapping ops ?

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Message-ID: <cdc09cf9-27dd-7838-34e7-12d63571e770@ti.com>
Date:   Tue, 14 Aug 2018 18:23:11 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Ramon Fried <ramon.fried@...il.com>, <lorenzo.pieralisi@....com>,
        <bhelgaas@...gle.com>, <linux-pci@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: PCI Endpoint - Missing inbound mapping ops ?

Hi,

On Tuesday 14 August 2018 06:19 PM, Ramon Fried wrote:
> Hi.
> I recently saw that the PCI endpoint API only supports outbound memory
> mapping: (AXI -> PCI) through the map_addr op.
> Why inbound mapping is missing (PCI->AXI) is missing ?
> In almost all of the PCI EP controllers I've worked with there was a
> need to map complete BARS or part of BARS to mmio/aperature regions on
> the device.

pci_epc_set_bar() is used for mapping BAR.

Thanks
Kishon