Hey Will,
On 2020-05-11 23:25, Sibi Sankar wrote:
The modem remote processor has two access paths to DDR. One path is
directly connected to DDR and another path goes through an SMMU. The
SMMU path is configured to be a direct mapping because it's used by
various peripherals in the modem
the kernel
program the SIDs for the modem in these cases.
Signed-off-by: Sibi Sankar
---
V6
* Rebased on Will's for-joerg/arm-smmu/updates
* Reword commit message and add more details [Stephen]
drivers/iommu/arm-smmu-qcom.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/iommu/arm
Hey Stephen,
Thanks for taking time to review the patch.
On 5/8/20 2:44 AM, Stephen Boyd wrote:
Quoting Sibi Sankar (2020-05-07 12:21:57)
The modem remote processor has two modes of access to the DDR, a direct
mode and through a SMMU which requires direct mapping. The configuration
to opt in for direct mapping on such platforms.
Signed-off-by: Sai Prakash Ranjan
Signed-off-by: Sibi Sankar
---
V5
* Reword commit message and drop unnecessary details
drivers/iommu/arm-smmu-qcom.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/iommu/arm-smmu-qcom.c b/drivers
Hey WIll,
On 2020-05-07 18:32, Will Deacon wrote:
On Tue, Apr 21, 2020 at 12:03:52AM +0530, Sai Prakash Ranjan wrote:
From: Sibi Sankar
The Q6 modem sub-system has direct access to DDR through memnoc.
Also SMMU is not expected to provide access control/translation
for these SIDs (sandboxing
On 2020-03-17 20:39, Sibi Sankar wrote:
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 device since smmu
Add iommus property to allow Q6 modem to boot on platforms which do
not have trustZone.
Signed-off-by: Sibi Sankar
---
Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt
b
Add iommus property to remoteproc modem node.
Signed-off-by: Sibi Sankar
---
arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi | 4
1 file changed, 4 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi
b/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi
index 8d16d016efec1
0x,
GFSYNR1 0x0781, GFSYNR2 0x
arm-smmu 1500.iommu: Unexpected global fault, this could be serious
arm-smmu 1500.iommu: GFSR 0x8002, GFSYNR0 0x,
GFSYNR1 0x0461, GFSYNR2 0x
Signed-off-by: Sibi Sankar
,
GFSYNR1 0x0461, GFSYNR2 0x
V2:
* Request direct mapping from SoC-specific corner of the SMMU
driver [Robin]
* Add iommu property to remoteproc modem node on Cheza
Depends on:
https://lore.kernel.org/patchwork/cover/1183528/
Sibi Sankar (3):
dt-bindings
Hey Christoph,
Thanks for taking time to review
the series.
On 2020-03-16 21:20, Christoph Hellwig wrote:
On Mon, Mar 09, 2020 at 11:52:52PM +0530, Sibi Sankar wrote:
The Q6 modem sub-system has direct access to DDR through memnoc and
an indirect access routed through a SMMU which MSS CE
Hey Joerg,
Thanks for taking time to review
the series!
On 2020-03-10 16:53, Joerg Roedel wrote:
On Mon, Mar 09, 2020 at 11:52:52PM +0530, Sibi Sankar wrote:
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
Introduce modem-firmware binding to allow Q6 modem to boot on platforms
which do not have trustZone.
Signed-off-by: Sibi Sankar
---
Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt | 4
1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/remoteproc
control/translation for these SIDs (sandboxing of the
modem is achieved through XPUs engaged using SMC calls).
Signed-off-by: Sibi Sankar
---
drivers/remoteproc/qcom_q6v5_mss.c | 68 ++
1 file changed, 68 insertions(+)
diff --git a/drivers/remoteproc/qcom_q6v5_mss.c
b
Export "iommu_request_dm_for_dev" to allow for modular builds of
drivers requesting for direct mapping.
Signed-off-by: Sibi Sankar
---
drivers/iommu/iommu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 3e3528436e0b2..06a
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 fo
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