From: Bjorn Helgaas <helgaas@kernel.org>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: "Nishanth Menon" <nm@ti.com>,
"Santosh Shilimkar" <ssantosh@kernel.org>,
"Vignesh Raghavendra" <vigneshr@ti.com>,
"Tero Kristo" <kristo@kernel.org>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org,
"Siddharth Vadapalli" <s-vadapalli@ti.com>,
"Bao Cheng Su" <baocheng.su@siemens.com>,
"Hua Qian Li" <huaqian.li@siemens.com>,
"Diogo Ivo" <diogo.ivo@siemens.com>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Bjorn Helgaas" <bhelgaas@google.com>
Subject: Re: [PATCH v4 2/7] dt-bindings: PCI: ti,am65: Extend for use with PVU
Date: Thu, 5 Sep 2024 11:37:21 -0500 [thread overview]
Message-ID: <20240905163721.GA390911@bhelgaas> (raw)
In-Reply-To: <28d31a14fe9cc1867f023ebaddd6074459d15e40.1725444016.git.jan.kiszka@siemens.com>
On Wed, Sep 04, 2024 at 12:00:11PM +0200, Jan Kiszka wrote:
> From: Jan Kiszka <jan.kiszka@siemens.com>
>
> The PVU on the AM65 SoC is capable of restricting DMA from PCIe devices
> to specific regions of host memory. Add the optional property
> "memory-regions" to point to such regions of memory when PVU is used.
>
> Since the PVU deals with system physical addresses, utilizing the PVU
> with PCIe devices also requires setting up the VMAP registers to map the
> Requester ID of the PCIe device to the CBA Virtual ID, which in turn is
> mapped to the system physical address. Hence, describe the VMAP
> registers which are optionally unless the PVU shall used for PCIe.
s/optionally/optional/
s/shall used/should be/ ? (Not sure that's the sense you intend)
next prev parent reply other threads:[~2024-09-05 16:38 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-04 10:00 [PATCH v4 0/7] soc: ti: Add and use PVU on K3-AM65 for DMA isolation Jan Kiszka
2024-09-04 10:00 ` [PATCH v4 1/7] dt-bindings: soc: ti: Add AM65 peripheral virtualization unit Jan Kiszka
2024-09-04 10:00 ` [PATCH v4 2/7] dt-bindings: PCI: ti,am65: Extend for use with PVU Jan Kiszka
2024-09-04 10:16 ` Siddharth Vadapalli
2024-09-04 11:47 ` Jan Kiszka
2024-09-05 6:32 ` Krzysztof Kozlowski
2024-09-05 6:40 ` Jan Kiszka
2024-09-05 6:53 ` Krzysztof Kozlowski
2024-09-05 7:15 ` Jan Kiszka
2024-09-05 7:50 ` Krzysztof Kozlowski
2024-09-05 7:56 ` Krzysztof Kozlowski
2024-09-06 7:00 ` Jan Kiszka
2024-09-05 6:57 ` Krzysztof Kozlowski
2024-09-05 7:16 ` Jan Kiszka
2024-09-05 7:52 ` Krzysztof Kozlowski
2024-09-06 7:13 ` Jan Kiszka
2024-09-05 16:37 ` Bjorn Helgaas [this message]
2024-09-04 10:00 ` [PATCH v4 3/7] soc: ti: Add IOMPU-like PVU driver Jan Kiszka
2024-09-04 10:00 ` [PATCH v4 4/7] PCI: keystone: Add supported for PVU-based DMA isolation on AM654 Jan Kiszka
2024-09-05 16:33 ` Bjorn Helgaas
2024-09-05 19:07 ` Jan Kiszka
2024-09-05 19:16 ` Bjorn Helgaas
2024-09-06 6:24 ` Jan Kiszka
2024-09-04 10:00 ` [PATCH v4 5/7] arm64: dts: ti: k3-am65-main: Add PVU nodes Jan Kiszka
2024-09-04 10:00 ` [PATCH v4 6/7] arm64: dts: ti: k3-am65-main: Add VMAP registers to PCI root complexes Jan Kiszka
2024-09-04 10:00 ` [PATCH v4 7/7] arm64: dts: ti: iot2050: Enforce DMA isolation for devices behind PCI RC on Advanced Jan Kiszka
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