Messages in this thread Patch in this message | | | From | Hanna Hawa <> | Subject | [PATCH 1/7] irqchip/alpine-msi: Call IOMMU DMA mapping MSI message hook | Date | Sun, 31 Mar 2019 15:34:09 +0300 |
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Add missing IOMMU DMA mapping MSI message hook in compose_msi_msg() callback for Alpine MSIx driver, to map the MSI physical address to IOMMU IOVA for any device attached to IOMMU DMA ops domains.
Signed-off-by: Hanna Hawa <hhhawa@amazon.com> Co-developed-by: Vladimir Aerov <vaerov@amazon.com> Signed-off-by: Vladimir Aerov <vaerov@amazon.com> --- drivers/irqchip/irq-alpine-msi.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/irqchip/irq-alpine-msi.c b/drivers/irqchip/irq-alpine-msi.c index 23a3b87..ae2fca7 100644 --- a/drivers/irqchip/irq-alpine-msi.c +++ b/drivers/irqchip/irq-alpine-msi.c @@ -12,6 +12,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +#include <linux/dma-iommu.h> #include <linux/irqchip.h> #include <linux/irqchip/arm-gic.h> #include <linux/msi.h> @@ -99,6 +100,12 @@ static void alpine_msix_compose_msi_msg(struct irq_data *data, msg->address_hi = upper_32_bits(msg_addr); msg->address_lo = lower_32_bits(msg_addr); msg->data = 0; + + /* + * Mapping MSI address to IOMMU IOVA, relevant for devices associated + * with IOMMU DMA ops domain. + */ + iommu_dma_map_msi_msg(data->irq, msg); } static struct msi_domain_info alpine_msix_domain_info = { -- 2.7.4
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