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ACPI: arm64: Move DMA setup operations out of IORT

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Extract generic DMA setup code out of IORT, so it can be reused by VIOT.
Keep it in drivers/acpi/arm64 for now, since it could break x86
platforms that haven't run this code so far, if they have invalid
tables.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/20210618152059.1194210-2-jean-philippe@linaro.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Jean-Philippe Brucker 2021-06-18 17:20:56 +02:00 • committed by Joerg Roedel
parent 8124c8a6b3
commit db59e1b6e4
6 changed files with 66 additions and 50 deletions
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6
include/linux/acpi_iort.h
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@ -34,7 +34,7 @@ struct irq_domain *iort_get_device_domain(struct device *dev, u32 id,
void acpi_configure_pmsi_domain(struct device *dev);
int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id);
/* IOMMU interface */
void iort_dma_setup(struct device *dev, u64 *dma_addr, u64 *size);
int iort_dma_get_ranges(struct device *dev, u64 *size);
const struct iommu_ops *iort_iommu_configure_id(struct device *dev,
const u32 *id_in);
int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head);
@ -48,8 +48,8 @@ static inline struct irq_domain *iort_get_device_domain(
{ return NULL; }
static inline void acpi_configure_pmsi_domain(struct device *dev) { }
/* IOMMU interface */
static inline void iort_dma_setup(struct device *dev, u64 *dma_addr,
u64 *size) { }
static inline int iort_dma_get_ranges(struct device *dev, u64 *size)
{ return -ENODEV; }
static inline const struct iommu_ops *iort_iommu_configure_id(
struct device *dev, const u32 *id_in)
{ return NULL; }