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From: Srinath Mannam <srinath.mannam@broadcom.com>
To: Bjorn Helgaas <bhelgaas@google.com>,
	Robin Murphy <robin.murphy@arm.com>,
	Joerg Roedel <joro@8bytes.org>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Ray Jui <rjui@broadcom.com>
Cc: bcm-kernel-feedback-list@broadcom.com, linux-pci@vger.kernel.org,
	iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
	Srinath Mannam <srinath.mannam@broadcom.com>
Subject: [RFC PATCH 0/3] PCIe Host request to reserve IOVA
Date: Wed, 12 Dec 2018 11:16:06 +0530	[thread overview]
Message-ID: <1544593569-8923-1-git-send-email-srinath.mannam@broadcom.com> (raw)

Few SOCs have limitation that their PCIe host
can't allow few inbound address ranges.
Allowed inbound address ranges are listed in
dma-ranges DT property and this address ranges
are required to do IOVA mapping.
Remaining address ranges have to be reserved in
IOVA mapping.

PCIe Host driver of those SOCs has to list all
address ranges which have to reserve their IOVA
address into PCIe host bridge resource entry list.
IOMMU framework will reserve these IOVAs while
initializing IOMMU domain.

This patch set is based on Linux-4.19-rc1.

Srinath Mannam (3):
  PCI: Add dma-resv window list
  iommu/dma: IOVA reserve for PCI host reserve address list
  PCI: iproc: Add dma reserve resources to host

 drivers/iommu/dma-iommu.c           |  8 ++++++
 drivers/pci/controller/pcie-iproc.c | 49 +++++++++++++++++++++++++++++++++++++
 drivers/pci/probe.c                 |  3 +++
 include/linux/pci.h                 |  1 +
 4 files changed, 61 insertions(+)

-- 
2.7.4


             reply	other threads:[~2018-12-12  5:46 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-12  5:46 Srinath Mannam [this message]
2018-12-12  5:46 ` [RFC PATCH 1/3] PCI: Add dma-resv window list Srinath Mannam
2018-12-12  5:46 ` [RFC PATCH 2/3] iommu/dma: IOVA reserve for PCI host reserve address list Srinath Mannam
2018-12-12  5:46 ` [RFC PATCH 3/3] PCI: iproc: Add dma reserve resources to host Srinath Mannam
2018-12-13  6:03   ` poza
2018-12-13  9:17     ` Srinath Mannam
2018-12-13  9:58       ` poza

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