The IOMMU in the Allwinner D1 SoC does not have an external reset line.
Only attempt to get the reset on hardware variants which should have one
according to the binding. And switch from the deprecated function to the
explicit "exclusive" variant.
Signed-off-by: Samuel Holland
---
So far, the driver has relied on arch/arm64/Kconfig to select IOMMU_DMA.
Unsurprisingly, this does not work on RISC-V, so the driver must select
IOMMU_DMA itself.
Signed-off-by: Samuel Holland
---
drivers/iommu/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/iommu/Kconfig b
The H6 variant of the hardware disables bypass by default. The D1
variant of the hardware enables bypass for all masters by default.
Since the driver expects bypass to be disabled, ensure that is the case.
Signed-off-by: Samuel Holland
---
drivers/iommu/sun50i-iommu.c | 2 ++
1 file changed
D1 contains an IOMMU similar to the one in the H6 SoC, but the D1
variant has no external reset signal.
Signed-off-by: Samuel Holland
---
.../iommu/allwinner,sun50i-h6-iommu.yaml | 16 ++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git
a/Documentation
c device is dma-coherent, set it here */
dev->dma_coherent = coherent;
+
+ if (iommu)
+ iommu_setup_dma_ops(dev, dma_base, dma_base + size - 1);
}
Samuel Holland (5):
dt-bindings: iommu: sun50i: Add compatible for Allwinner D1
iommu/sun50i: Support variants without
D1 contains an IOMMU similar to the one in the H6 SoC, but the D1
variant has no external reset signal. It also has some register
definition changes, but none that affect the current driver.
Signed-off-by: Samuel Holland
---
drivers/iommu/sun50i-iommu.c | 4
1 file changed, 4 insertions
patch to prevent GENERIC_IRQ_IPI from being selected on !SMP
Samuel Holland (8):
irqchip/mips-gic: Only register IPI domain when SMP is enabled
genirq: GENERIC_IRQ_IPI depends on SMP
genirq: GENERIC_IRQ_EFFECTIVE_AFF_MASK depends on SMP
genirq: Drop redundant irq_init_effective_affinity
g
allocating one per IRQ.
By returning a real cpumask from irq_data_get_affinity_mask even when
SMP is disabled, irqchip drivers which iterate over that mask will
automatically do the right thing.
Signed-off-by: Samuel Holland
---
Changes in v3:
- Use cpumask_of(0) instead of cpu_possible_mask
The generic IPI code depends on the IRQ affinity mask being allocated
and initialized. This will not be the case if SMP is disabled. Fix up
the remaining driver that selected GENERIC_IRQ_IPI in a non-SMP config.
Reported-by: kernel test robot
Signed-off-by: Samuel Holland
---
(no changes since
An IRQ's effective affinity can only be different from its configured
affinity if there are multiple CPUs. Make it clear that this option is
only meaningful when SMP is enabled. Most of the relevant code in
irqdesc.c is already hidden behind CONFIG_SMP anyway.
Signed-off-by: Samuel Ho
robot
Signed-off-by: Samuel Holland
---
Changes in v3:
- New patch to fix build errors in uniprocessor MIPS configs
drivers/irqchip/Kconfig| 3 +-
drivers/irqchip/irq-mips-gic.c | 80 +++---
2 files changed, 56 insertions(+), 27 deletions(-)
diff --git a
A couple of functions directly reference the affinity mask. Route them
through irq_data_get_affinity_mask so they will pick up any refactoring
done there.
Signed-off-by: Samuel Holland
---
(no changes since v1)
include/linux/irq.h | 14 +++---
1 file changed, 7 insertions(+), 7
mask, following the pattern of
irq_data_update_effective_affinity. This allows the getter function to
return a const cpumask pointer.
Signed-off-by: Samuel Holland
---
Changes in v3:
- New patch to introduce irq_data_update_affinity
arch/alpha/kernel/irq.c | 2 +-
arch/ia64/kernel
cpumask or immediately passed the modified
mask to irq_set_affinity.
Signed-off-by: Samuel Holland
---
Changes in v3:
- New patch to make the returned cpumasks const
arch/mips/cavium-octeon/octeon-irq.c | 4 ++--
arch/sh/kernel/irq.c | 7 ---
arch/x86/hyperv/irqdomain.c
It does exactly the same thing as irq_data_update_effective_affinity.
Signed-off-by: Samuel Holland
---
Changes in v3:
- New patch to drop irq_init_effective_affinity
kernel/irq/manage.c | 10 +-
1 file changed, 1 insertion(+), 9 deletions(-)
diff --git a/kernel/irq/manage.c b
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