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2008-12-09KVM: Coalesced MMIO supportaliguori
MMIO exits are more expensive in KVM or Xen than in QEMU because they involve, at least, privilege transitions. However, MMIO write operations can be effectively batched if those writes do not have side effects. Good examples of this include VGA pixel operations when in a planar mode. As it turns out, we can get a nice boost in other areas too. Laurent mentioned a 9.7% performance boost in iperf with the coalesced MMIO changes for the e1000 when he originally posted this work for KVM. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5961 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-01Change MMIO callbacks to use offsets, not absolute addresses.pbrook
Signed-off-by: Paul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5849 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-21e1000 VLAN offload emulation (Alex Williamson)aliguori
We're currently ignoring the e1000 VLAN tagging, stripping and filtering features in the e1000 emulation. This patch adds backing for the relevant registers and provides a software implementation of the acceleration, such that a guest can make use of VLANs. This is mostly (only?) useful for a guest on a bridge (not user mode networking). The only caveat beyond that is that you need to make sure the host NIC isn't doing it's own tagging, stripping, or filtering. This generally means the host NIC on the bridge should not be part of a VLAN. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5766 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-02Resurrect the safe part of r5274blueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5401 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-02Make some tables constblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5395 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-30Add some missing static qualifiersblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5363 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-25Revert r5274 which breaks savevm/loadvmblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5321 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-20Add signed versions of save/load functionsblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5274 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-14Fix warnings that would be caused by gcc flag -Wwrite-stringsblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5206 c046a42c-6fe2-441c-8c8c-71466251a162
2008-08-06only check RCTL_EN in e1000_can_receive()aliguori
e1000_receive() has code to raise a receive overflow interrupt when the receive buffer head and tail match. However, with the present implementation of e1000_can_receive(), this code is unreachable -- and etherboot breaks as a result. Signed-off-by: Charles Duffy <charles_duffy@messageone.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4987 c046a42c-6fe2-441c-8c8c-71466251a162
2008-07-29e1000: use common checksumming codealiguori
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4972 c046a42c-6fe2-441c-8c8c-71466251a162
2008-07-18Various NICs: Fix suspend/resume of multiple instances, by Jan Kiszka.ths
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4892 c046a42c-6fe2-441c-8c8c-71466251a162
2008-07-16e1000: only use TSE if enabled for current packet (Anthony Xu). balrog
Previously, all data descriptors used TSE context descriptor by default, It's not correct, per spec, data descriptor uses TSE bit to indicate whether use TSE, Legacy data descripter never use TSE. This patch fixed this bug. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4878 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-13Fix compiler warning.ths
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4451 c046a42c-6fe2-441c-8c8c-71466251a162
2008-03-28e1000: add phy specific status registeraurel32
(Tristan Gingold) git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4123 c046a42c-6fe2-441c-8c8c-71466251a162
2008-03-28e1000: fix unaligned accessaurel32
(Tristan Gingold) git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4121 c046a42c-6fe2-441c-8c8c-71466251a162
2008-03-13e1000: fix endianness issuesaurel32
This patch fixes endianness issues in the e1000 nic emulation, which currently only works on little endian hosts with little endian targets. Byte swapping does not depend on host endianness, so this patch remove the use of cpu_to_le32 and le32_to_cpu functions. It depends on the path from the CPU to the device, which is currently and *wrongly* implemented in Qemu as a byteswap on big endian targets. This patch does the same as in other devices emulation as all the currently implemented targets work with this implementation. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4046 c046a42c-6fe2-441c-8c8c-71466251a162
2008-03-10Change the e1000 mmio addr space according to spec.aurel32
According to the Intel 82540EM manual, the mmio space is 128k size. Copied from Xen list and noted by tina..yang@oracle.com Signed-off-by: Dor Laor <dor.laor@qumranet.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4032 c046a42c-6fe2-441c-8c8c-71466251a162
2008-02-10Fix parallel port software emulation (Hervé Poussineau).balrog
Remove __iomem, also unused. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3971 c046a42c-6fe2-441c-8c8c-71466251a162
2008-02-10Remove unused boolean_t, should fix building for Solaris.balrog
Fix a typo (Stuart Brady). git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3969 c046a42c-6fe2-441c-8c8c-71466251a162
2008-02-03E1000 NIC emulation (Nir Peleg, patch from Dor Laor).balrog
Applied %s/^\([^I ]*\)^I/\1 /g on e1000.c and added e1000 to help message. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3949 c046a42c-6fe2-441c-8c8c-71466251a162
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