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[Qemu-devel] [PATCH 00/10] AHCI emulation support v7
From: |
Alexander Graf |
Subject: |
[Qemu-devel] [PATCH 00/10] AHCI emulation support v7 |
Date: |
Wed, 1 Dec 2010 20:17:02 +0100 |
This patch adds support for AHCI emulation. I have tested and verified it works
in Linux, OpenBSD, Windows Vista and Windows 7. This AHCI emulation supports
NCQ, so multiple read or write requests can be outstanding at the same time.
The code is however not fully optimized yet. I'm fairly sure that there are
low hanging performance fruits to be found still :). In my simple benchmarks
I achieved about 2/3rd of virtio performance.
Also, this AHCI emulation layer does not support legacy mode. So if you're
using a disk with this emulation, you do not get it exposed using the legacy
IDE interfaces.
Another nitpick is CD-ROM support in Windows. Somehow it doesn't detect a
CD-ROM drive attached to AHCI. At least it doesn't list it.
To attach an AHCI disk to your VM, please use
-drive id=disk,file=...,if=none -device ahci,id=ahci \
-device ide-drive,drive=disk,bus=ahci.0
Big endian hosts are still broken due to qemu shortcomings in mmio handing.
With the mmio endianness patch set, ahci works there too.
This patch set is based on work done during the Google Summer of Code. I was
mentoring a student, Roland Elek, who wrote most of the AHCI emulation code
based on a patch from Chong Qiao. A bunch of other people were also involved,
so everybody who I didn't mention - thanks a lot!
git://repo.or.cz/qemu/ahci.git ahci
v1 -> v2:
- rename IDEExtender to IDEBusOps and make a pointer (kraxel)
- make dma hooks explicit by putting them into ops struct (stefanha)
- use qdev buses (kraxel)
- minor cleanups
- dprintf overhaul
- add reset function
v2 -> v3:
- add msi support (kraxel)
- use MIN macro (kraxel)
- add msi support (kraxel)
- fix ncq with multiple ports
- zap qdev properties (kraxel)
- redesign legacy IF_SATA hooks (kraxel)
- don't build ahci as part of target
- move to ide/ (kwolf)
v3 -> v4:
- prepare for endianness safety
- add lspci dump (herbszt)
- use ich7 instead of ich7m (herbszt)
- fix lst+fis mapping (kraxel)
- coding style (blue swirl)
- explicit mmio setters/getters (blue swirl)
- split pata code out to pata.c (kwolf)
- only include config-devices.h in machine description (blue swirl)
v4 -> v5:
- s/H2dNcqFis/NCQFrame/g (blue swirl)
- redo -drive magic (blue swirl)
- bump BAR to 4k
- rename ICH7_AHCI to ICH7_AHCI_RAID (herbszt)
- drop device config header (blue swirl)
v5 -> v6:
- PCI config space fixes (isaku)
- remove CONFIG_AHCI from x86 default configs (paul brook)
- use snprintf (blue swirl)
- add generic PCI config file (paul brook)
- build ahci on all PCI platforms (paul brook)
v6 -> v7:
- use bus instead of opaque (stefanha)
- change naming in IDEBusOps (stefanha, kwolf)
- rename IDEBusOps (stefanha)
- improve interrupt injection
- combine tfdata code paths
- update tfdata more often
- reset port registers on port reset
- improve debug output
- add "feature" variable from fis for some extended commands
- always set feature to DMA for atapi
- osx 10.5.0 works as of this version
- use non-raid ich7 ahci (herbszt)
- reflect normal ich7 in pci dump
- stick to new IDEBusOps (stefanha, kwolf)
- stefan's ahci comments
Alexander Graf (8):
ide: split ide command interpretation off
ide: fix whitespace gap in ide_exec_cmd
ide: add DMA hooks to bus ops
pci: add storage class for sata
pci: add ich7 pci id
ahci: add ahci emulation
ide: move pata specific parts to pata.c
config: add ahci for pci capable machines
Roland Elek (2):
ide: add support for ide bus ops
ide: add ncq identify data for ahci sata drives
Makefile.objs | 3 +-
default-configs/pci.mak | 1 +
hw/ide/ahci.c | 1375 +++++++++++++++++++++++++++++++++++++++++++++++
hw/ide/core.c | 874 ++++++++++++++-----------------
hw/ide/internal.h | 37 +-
hw/ide/pata.c | 178 ++++++
hw/pci.h | 1 +
hw/pci_ids.h | 1 +
8 files changed, 1981 insertions(+), 489 deletions(-)
create mode 100644 hw/ide/ahci.c
create mode 100644 hw/ide/pata.c
- [Qemu-devel] [PATCH 00/10] AHCI emulation support v7,
Alexander Graf <=
- [Qemu-devel] [PATCH 05/10] ide: add ncq identify data for ahci sata drives, Alexander Graf, 2010/12/01
- [Qemu-devel] [PATCH 04/10] ide: add DMA hooks to bus ops, Alexander Graf, 2010/12/01
- [Qemu-devel] [PATCH 10/10] config: add ahci for pci capable machines, Alexander Graf, 2010/12/01
- [Qemu-devel] [PATCH 07/10] pci: add ich7 pci id, Alexander Graf, 2010/12/01
- [Qemu-devel] [PATCH 01/10] ide: split ide command interpretation off, Alexander Graf, 2010/12/01
- [Qemu-devel] [PATCH 09/10] ide: move pata specific parts to pata.c, Alexander Graf, 2010/12/01