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[Qemu-devel] [PATCH 0/4] Block DMA helpers (v2)
From: |
Avi Kivity |
Subject: |
[Qemu-devel] [PATCH 0/4] Block DMA helpers (v2) |
Date: |
Thu, 5 Feb 2009 11:33:55 +0200 |
The current dma mapping API is fairly complex to use: mapping can fail
when bounce resources are exhausted, requiring the caller to reschedule,
and the interface is fairly low level.
This patchset introduces block device oriented helpers to centralize this
logic. Devices need only submit a scatter/gather list, and the helpers
will do all the dirty work of mapping, rescheduling, and unmapping. IDE
has been converted to the new API.
Changes from v1:
- added license and copyright for new files
Avi Kivity (4):
Add a scatter-gather list type and accessors
Add qemu_iovec_reset()
Introduce block dma helpers
Convert IDE to use new dma helpers
Makefile.target | 2 +-
cutils.c | 6 ++
dma-helpers.c | 155 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
dma.h | 41 +++++++++++++++
hw/ide.c | 76 ++++-----------------------
qemu-common.h | 1 +
6 files changed, 214 insertions(+), 67 deletions(-)
create mode 100644 dma-helpers.c
create mode 100644 dma.h
- [Qemu-devel] [PATCH 0/4] Block DMA helpers (v2),
Avi Kivity <=
- [Qemu-devel] [PATCH 1/4] Add a scatter-gather list type and accessors, Avi Kivity, 2009/02/05
- [Qemu-devel] [PATCH 4/4] Convert IDE to use new dma helpers, Avi Kivity, 2009/02/05
- [Qemu-devel] [PATCH 2/4] Add qemu_iovec_reset(), Avi Kivity, 2009/02/05
- [Qemu-devel] [PATCH 3/4] Introduce block dma helpers, Avi Kivity, 2009/02/05
- [Qemu-devel] Re: [PATCH 0/4] Block DMA helpers (v2), Anthony Liguori, 2009/02/05