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Prep for DriverKit #23

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Prep for DriverKit #23

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Commits on Sep 6, 2024

  1. nvme/util: make nvme_set_errno_from_cqe static inline 

    Move nvme_set_errno_from_cqe to header such that rq_test does not need
to link with nvme/util.c.

Signed-off-by: Klaus Jensen <[email protected]>
    @birkelund
    birkelund committed Sep 6, 2024
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  2. iommu: add dmabuf helper 

    Add iommu/dmabuf.h which helps allocating and mapping DMA buffers.

Signed-off-by: Klaus Jensen <[email protected]>
    @birkelund
    birkelund committed Sep 6, 2024
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  3. nvme: use iommu_dmabuf api 

    Replace all pgmap/iommu_map_vaddr pairs with iommu_get/put_dmabuf.

Signed-off-by: Klaus Jensen <[email protected]>
    @birkelund
    birkelund committed Sep 6, 2024
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  4. nvme/core: abstract mmio 

    The mmio helpers assume that we can read and write to a specific
address. The proposed DriverKit backend cannot do that and must call
specific functions on a base address and an offset.

In the core, prepare for DriverKit to provide its own implementation of
doing that.

This is a simplified version of commit "mmio: convert calls of 'addr +
offset' to 'base-addr, offset'" to limit the change to the nvme core.

Signed-off-by: Mads Ynddal <[email protected]>
[k.jensen: limit the change to nvme/core for now]
Signed-off-by: Klaus Jensen <[email protected]>
    @Baekalfen @birkelund
    Baekalfen authored and birkelund committed Sep 6, 2024
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  5. support/mem: add driverkit operations 

    Within DriverKit we cannot use malloc/free but have to use the DriverKit
specific IOMallocZero and IOFree.

Signed-off-by: Mads Ynddal <[email protected]>
[k.jensen: allowed more generic functions to be retained]
Signed-off-by: Klaus Jensen <[email protected]>
    @Baekalfen @birkelund
    Baekalfen authored and birkelund committed Sep 6, 2024
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