From: Julien Grall <julien.grall@linaro.org>
To: Manish <mjaggi@caviumnetworks.com>, xen-devel@lists.xenproject.org
Cc: tim@xen.org, stefano.stabellini@citrix.com, ian.campbell@citrix.com
Subject: Re: [PATCH v3 12/13] xen/iommu: smmu: Add Xen specific code to be able to use the driver
Date: Mon, 02 Feb 2015 23:01:02 +0000 [thread overview]
Message-ID: <54D001AE.1020000@linaro.org> (raw)
In-Reply-To: <54CFC82A.4090500@caviumnetworks.com>
Hello Manish,
On 02/02/2015 18:55, Manish wrote:
> A general comment,
Please avoid top post.
> master->of_node is used as a unique value in the rb_tree. In case of
> pci_passthrough devices are enumerated and not present in device tree,
> so I would have to remove the rb_tree and replace with a linked list.
Clearly no. There is no big change necessary in the code. Think that
Linux is able to handle PCI with master->of_node. So why Xen has to be
different?
In case of PCI, master is attached to a root bus. Every root buses are
described in the device tree so they are associated to a device node.
I have added few TODOs (just search TODO) in the code where you should
plumb to support PCI. Any change outside is by default wrong.
The TODOs are:
* dev_get_dev_node: you have to find the root bus and return the device
node.
* arm_smmu_add_device: You have to get the stream IDs associate
to it and store it in the PCI device IOMMU data.
Regards,
--
Julien Grall
next prev parent reply other threads:[~2015-02-02 23:01 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-30 18:49 [PATCH v3 00/13] xen/arm: Resync the SMMU driver with the Linux one Julien Grall
2015-01-30 18:49 ` [PATCH v3 01/13] xen/arm: gic-v2: Change the device name in DT_DEVICE_START Julien Grall
2015-02-20 12:16 ` Ian Campbell
2015-01-30 18:49 ` [PATCH v3 02/13] xen/arm: vgic: Drop unecessary include asm/device.h Julien Grall
2015-02-20 12:16 ` Ian Campbell
2015-01-30 18:49 ` [PATCH v3 03/13] xen/dt: Extend dt_device_match to possibly store data Julien Grall
2015-02-06 12:37 ` Stefano Stabellini
2015-02-20 12:16 ` Ian Campbell
2015-01-30 18:49 ` [PATCH v3 04/13] xen/arm: device: Rename device_type into device_class Julien Grall
2015-02-06 12:38 ` Stefano Stabellini
2015-02-20 12:17 ` Ian Campbell
2015-01-30 18:49 ` [PATCH v3 05/13] xen/iommu: arm: Remove temporary the SMMU driver Julien Grall
2015-02-20 12:18 ` Ian Campbell
2015-02-20 12:53 ` Julien Grall
2015-02-20 13:47 ` Ian Campbell
2015-02-20 13:53 ` Julien Grall
2015-02-20 14:06 ` Ian Campbell
2015-02-20 14:07 ` Julien Grall
2015-01-30 18:49 ` [PATCH v3 06/13] xen/arm: Introduce a generic way to describe device Julien Grall
2015-02-02 8:04 ` Jan Beulich
2015-02-06 12:39 ` Stefano Stabellini
2015-02-20 12:22 ` Ian Campbell
2015-02-24 14:26 ` Julien Grall
2015-02-24 14:45 ` Ian Campbell
2015-01-30 18:49 ` [PATCH v3 07/13] xen/iommu: Consolidate device assignment ops into a single set Julien Grall
2015-02-20 12:25 ` Ian Campbell
2015-01-30 18:49 ` [PATCH v3 08/13] xen/arm: Describe device supported by a driver with dt_match_node Julien Grall
2015-02-20 12:30 ` Ian Campbell
2015-02-24 14:42 ` Julien Grall
2015-01-30 18:49 ` [PATCH v3 09/13] xen/iommu: arm: Import the SMMU driver from Linux Julien Grall
2015-02-20 12:31 ` Ian Campbell
2015-02-20 13:33 ` Julien Grall
2015-02-20 13:48 ` Ian Campbell
2015-01-30 18:49 ` [PATCH v3 10/13] xen/iommu: smmu: Check for duplicate stream IDs when registering master devices Julien Grall
2015-02-20 12:35 ` Ian Campbell
2015-02-20 13:34 ` Julien Grall
2015-02-20 13:48 ` Ian Campbell
2015-02-20 14:47 ` Andreas Herrmann
2015-01-30 18:49 ` [PATCH v3 11/13] xen/iommu: smmu: Introduce automatic stream-id-masking Julien Grall
2015-02-20 13:15 ` Ian Campbell
2015-02-20 13:42 ` Julien Grall
2015-02-20 13:55 ` Ian Campbell
2015-02-20 15:07 ` Julien Grall
2015-02-23 10:42 ` Ian Campbell
2015-02-23 10:52 ` Julien Grall
2015-02-23 12:48 ` Ian Campbell
2015-01-30 18:49 ` [PATCH v3 12/13] xen/iommu: smmu: Add Xen specific code to be able to use the driver Julien Grall
2015-02-02 18:55 ` Manish
2015-02-02 23:01 ` Julien Grall [this message]
2015-02-06 13:20 ` Stefano Stabellini
2015-02-09 15:40 ` Julien Grall
2015-02-19 17:17 ` Julien Grall
2015-02-20 13:29 ` Ian Campbell
2015-02-20 14:01 ` Julien Grall
2015-02-20 13:23 ` Ian Campbell
2015-02-20 13:50 ` Julien Grall
2015-01-30 18:49 ` [PATCH v3 13/13] xen/iommu: smmu: Advertise when the SMMU support coherent table walk Julien Grall
2015-02-06 14:06 ` Stefano Stabellini
2015-02-10 1:36 ` Julien Grall
2015-02-10 1:37 ` Julien Grall
2015-02-20 13:34 ` Ian Campbell
2015-02-20 14:07 ` Julien Grall
2015-02-20 14:13 ` Ian Campbell
2015-02-20 14:15 ` Julien Grall
2015-02-20 14:28 ` Ian Campbell
2015-02-20 14:15 ` [PATCH v3 00/13] xen/arm: Resync the SMMU driver with the Linux one Ian Campbell
2015-02-20 14:19 ` Julien Grall
2015-02-20 14:27 ` Ian Campbell
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