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sparc64: Enable sun4v dma ops to use IOMMU v2 APIs

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Add Hypervisor IOMMU v2 APIs pci_iotsb_map(), pci_iotsb_demap() and
enable sun4v dma ops to use IOMMU v2 API for all PCIe devices with
64bit DMA mask.

Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com>
Reviewed-by: chris hyser <chris.hyser@oracle.com>
Acked-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tushar Dave
2016-10-28 10:12:44 -07:00
committed by David S. Miller
parent 5116ab4eab
commit f08978b0fd
4 changed files with 211 additions and 58 deletions
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6
arch/sparc/include/asm/hypervisor.h
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@@ -2377,6 +2377,12 @@ unsigned long sun4v_vintr_set_target(unsigned long dev_handle,
* iotsb_index Zero-based IOTTE number within an IOTSB.
*/
/* The index_count argument consists of two fields:
* bits 63:48 #iottes and bits 47:0 iotsb_index
*/
#define HV_PCI_IOTSB_INDEX_COUNT(__iottes, __iotsb_index) \
(((u64)(__iottes) << 48UL) | ((u64)(__iotsb_index)))
/* pci_iotsb_conf()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_IOTSB_CONF