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From: Sibi Sankar <>
Cc:,,,,,,, Sibi Sankar <>
Subject: [PATCH 0/3] Request direct mapping for modem firmware subdevice
Date: Mon,  9 Mar 2020 23:52:52 +0530
Message-ID: <> (raw)

The Q6 modem sub-system has direct access to DDR through memnoc and
an indirect access routed through a SMMU which MSS CE (crypto engine
sub-component of MSS) uses during out of reset sequence. Request direct
mapping for the modem-firmware subdevice since smmu is not expected
to provide access control/translation for these SIDs (sandboxing of the
modem is achieved through XPUs engaged using SMC calls).

Sibi Sankar (3):
  iommu: Export "iommu_request_dm_for_dev"
  dt-bindings: remoteproc: qcom: Add modem-firmware bindings
  remoteproc: qcom_q6v5_mss: Request direct mapping for firmware

 .../bindings/remoteproc/qcom,q6v5.txt         |  4 ++
 drivers/iommu/iommu.c                         |  1 +
 drivers/remoteproc/qcom_q6v5_mss.c            | 68 +++++++++++++++++++
 3 files changed, 73 insertions(+)

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Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-09 18:22 Sibi Sankar [this message]
2020-03-09 18:22 ` [PATCH 1/3] iommu: Export "iommu_request_dm_for_dev" Sibi Sankar
2020-03-09 18:22 ` [PATCH 2/3] dt-bindings: remoteproc: qcom: Add modem-firmware bindings Sibi Sankar
2020-03-09 18:22 ` [PATCH 3/3] remoteproc: qcom_q6v5_mss: Request direct mapping for firmware subdevice Sibi Sankar
2020-03-10 11:23 ` [PATCH 0/3] Request direct mapping for modem " Joerg Roedel
2020-03-10 14:00   ` Sibi Sankar
2020-03-10 16:23     ` Joerg Roedel
2020-03-10 16:44       ` Robin Murphy
2020-03-12  6:28         ` Sai Prakash Ranjan
2020-03-12 12:05           ` Robin Murphy
2020-03-23  9:43             ` Sai Prakash Ranjan
2020-03-16 15:50 ` Christoph Hellwig
2020-03-16 16:37   ` Sibi Sankar

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