Please add some documentation on where/how this should be used. It's
not a very obvious interface.
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A unconfirmed hardware bug prevents channel 0 and 15 to be used by the
DMAC together with the IPMMU. The DMAC driver will disable the channels
reducing the effective number of channels to 14 per DMAC.
Signed-off-by: Niklas Söderlund
Acked-by: Laurent Pinchart
---
arch/arm/boot/dts/r8a7791.dtsi
Add methods to map/unmap device resources addresses for dma_map_ops that
are IOMMU aware. This is needed to map a device MMIO register from a
physical address.
Signed-off-by: Niklas Söderlund
Reviewed-by: Laurent Pinchart
---
arch/arm/mm/dma-mapping.c | 63 ++
From: Robin Murphy
On some platforms, MMIO regions might need slightly different treatment
compared to mapping regular memory; add the notion of MMIO mappings to
the IOMMU API's memory type flags, so that callers can let the IOMMU
drivers know to do the right thing.
Signed-off-by: Robin Murphy
A unconfirmed hardware bug prevents channel 0 and 15 to be used by the
DMAC together with the IPMMU. The DMAC driver will disable the channels
reducing the effective number of channels to 14 per DMAC.
Signed-off-by: Niklas Söderlund
Acked-by: Laurent Pinchart
---
arch/arm/boot/dts/r8a7790.dtsi
Hi,
This series add iommu support to rcar-dmac. It's tested on Koelsch with
CONFIG_IPMMU_VMSA and by enabling the ipmmu_ds node in r8a7791.dtsi. I
verified operation by interacting with /dev/mmcblk1 and the serial
console which both are devices behind the iommu.
The series depends patch '[PATCH]
Slave addresses coming from a client is physical not dma. Store the
address using the correct data type. This is in preparation for hooking
up the dma-mapping API to the slave addresses.
Signed-off-by: Niklas Söderlund
---
drivers/dma/sh/rcar-dmac.c | 4 ++--
1 file changed, 2 insertions(+), 2 d
Enable slave transfers to a device behind a IPMMU by mapping the slave
addresses using the dma-mapping API.
Signed-off-by: Niklas Söderlund
---
drivers/dma/sh/rcar-dmac.c | 82 +-
1 file changed, 74 insertions(+), 8 deletions(-)
diff --git a/drivers/d
Map/Unmap a device resource from a physical address. If no dma_map_ops
method is available the operation is a no-op.
Signed-off-by: Niklas Söderlund
---
include/linux/dma-mapping.h | 32
1 file changed, 32 insertions(+)
diff --git a/include/linux/dma-mapping.h b
Add methods to handle mapping of device resources from a physical
address. This is needed for example to be able to map MMIO FIFO
registers to a IOMMU.
Signed-off-by: Niklas Söderlund
Reviewed-by: Laurent Pinchart
---
include/linux/dma-mapping.h | 6 ++
1 file changed, 6 insertions(+)
diff
Group slave address and transfer size in own structs for source and
destination. This is in preparation for hooking up the dma-mapping API
to the slave addresses.
Signed-off-by: Niklas Söderlund
---
drivers/dma/sh/rcar-dmac.c | 38 ++
1 file changed, 22 insert
(Sorry for the delay, $DAYJOB took a lot of cycles. Adding AHCI maintainers to
cc:)
On Tue, 16 Feb 2016 17:47:45 +0100, Joerg Roedel said:
> On Tue, Feb 09, 2016 at 02:59:00PM -0500, Valdis Kletnieks wrote:
> > [0.027629] Freeing SMP alternatives memory: 28K (8e111000 -
> >
Hi Eric,
On 01/03/16 18:27, Eric Auger wrote:
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 0e3b009..7b2bb94 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -1072,6 +1072,7 @@ static struct iommu_domain *__iommu_domain_alloc(struct
bus_type *bus,
do
From: Varun Sethi
PAMU driver suspend and resume support.
Signed-off-by: Varun Sethi
Signed-off-by: Codrin Ciubotariu
---
drivers/iommu/fsl_pamu.c | 155 +--
1 file changed, 123 insertions(+), 32 deletions(-)
diff --git a/drivers/iommu/fsl_pamu.c b
From: Varun Sethi
Added cache controller compatible strings for T2080, B4420, T1040
and T1024. PAMU driver searches for a matching string while setting
up L3 cache stashing.
Signed-off-by: Varun Sethi
Signed-off-by: Codrin Ciubotariu
---
drivers/iommu/fsl_pamu.c | 10 ++
1 file change
From: Varun Sethi
Once the PCIe device assigned to a guest VM (via VFIO) gets detached
from the iommu domain (when guest terminates), its PAMU table entry
is disabled. So, this would prevent the device from being used once
it's assigned back to the host.
This patch allows for creation of a defau
From: Varun Sethi
Factor out PCI specific code in the PAMU driver.
Signed-off-by: Varun Sethi
Signed-off-by: Codrin Ciubotariu
---
drivers/iommu/fsl_pamu_domain.c | 77 ++---
1 file changed, 41 insertions(+), 36 deletions(-)
diff --git a/drivers/iommu/fsl_
From: Varun Sethi
Enable OMT cache, before invalidating PAACT and SPAACT cache. This
is a PAMU hardware errata work around.
Signed-off-by: Varun Sethi
Signed-off-by: Codrin Ciubotariu
---
drivers/iommu/fsl_pamu.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a/drivers/iommu/fs
Erratum A-007907 can cause a core hang under certain circumstances.
Part of the workaround involves not stashing to L1 Cache. On affected
chips, stash to L2 when L1 is requested.
Signed-off-by: Scott Wood
Signed-off-by: Varun Sethi
Signed-off-by: Shengzhou Liu
Signed-off-by: Codrin Ciubotariu
Signed-off-by: Codrin Ciubotariu
---
drivers/iommu/fsl_pamu.c| 92 +
drivers/iommu/fsl_pamu.h| 29 +++--
drivers/iommu/fsl_pamu_domain.c | 41 +++---
drivers/iommu/fsl_pamu_domain.h | 2 +-
4 files changed, 109 insertion
This patchset addresses a few issues found on PAMU IOMMU
and small changes to enable power management and to support the
L3 cache controller on some newer boards.
The series starts with a clean-up patch, followed by two
errata fixes: A-007907 and A-005982. It continues with
two fixes for PCIe supp
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