Diffusion FreeBSD src repository - subversion rS347225

Provide a template for busdma code for RISC-V.
rS347225
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Description

Provide a template for busdma code for RISC-V.

RISC-V ISA specifies no cache management instructions so leave cache
operations in cpufunc.h as no-op for now.

Note some new hardware comes with their own memory-mapped cache
management controller.

Tested on HiFive Unleashed board with cgem(4).

Reviewed by: markj
Obtained from: arm64
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D20126

Details

Provenance

br	Authored on

Reviewer

markj

Differential Revision

D20126: busdma support for RISC-V

Parents

rS347224: Use @generated tag in generated files

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Event Timeline

br committed rS347225: Provide a template for busdma code for RISC-V..May 7 2019, 1:41 PM

Changes (7)

Path

Size

head/

sys/

conf/

files.riscv

riscv/

include/

riscv/

rS347225

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head/sys/conf/files.riscv

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head/sys/riscv/include/bus_dma.h

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head/sys/riscv/include/bus_dma_impl.h

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head/sys/riscv/include/cpufunc.h

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head/sys/riscv/riscv/busdma_bounce.c

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head/sys/riscv/riscv/busdma_machdep.c

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head/sys/riscv/riscv/machdep.c

Provide a template for busdma code for RISC-V.rS347225Actions

Description

Details

Event Timeline

Changes (7)

rS347225

head/sys/conf/files.riscv

head/sys/riscv/include/bus_dma.h

head/sys/riscv/include/bus_dma_impl.h

head/sys/riscv/include/cpufunc.h

head/sys/riscv/riscv/busdma_bounce.c

head/sys/riscv/riscv/busdma_machdep.c

head/sys/riscv/riscv/machdep.c

Provide a template for busdma code for RISC-V.
rS347225
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