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| author | Danilo Krummrich <[email protected]> | 2024-12-19 17:04:12 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2024-12-20 16:19:26 +0000 |
| commit | bf9651f84b4e49ca006fd8b5534f16a38dae875c (patch) | |
| tree | a903dc00bb4f7e36cbb0cf4f49acd84bccb42cff /rust/helpers/helpers.c | |
| parent | rust: pci: add basic PCI device / driver abstractions (diff) | |
| download | kernel-bf9651f84b4e49ca006fd8b5534f16a38dae875c.tar.gz kernel-bf9651f84b4e49ca006fd8b5534f16a38dae875c.zip | |
rust: pci: implement I/O mappable `pci::Bar`
Implement `pci::Bar`, `pci::Device::iomap_region` and
`pci::Device::iomap_region_sized` to allow for I/O mappings of PCI BARs.
To ensure that a `pci::Bar`, and hence the I/O memory mapping, can't
out-live the PCI device, the `pci::Bar` type is always embedded into a
`Devres` container, such that the `pci::Bar` is revoked once the device
is unbound and hence the I/O mapped memory is unmapped.
A `pci::Bar` can be requested with (`pci::Device::iomap_region_sized`) or
without (`pci::Device::iomap_region`) a const generic representing the
minimal requested size of the I/O mapped memory region. In case of the
latter only runtime checked I/O reads / writes are possible.
Co-developed-by: Philipp Stanner <[email protected]>
Signed-off-by: Philipp Stanner <[email protected]>
Signed-off-by: Danilo Krummrich <[email protected]>
Tested-by: Dirk Behme <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'rust/helpers/helpers.c')
0 files changed, 0 insertions, 0 deletions