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f1c2dc7c86
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Alexey Kardashevskiy f1c2dc7c86 spapr-pci: rework MSI/MSIX 
On the sPAPR platform a guest allocates MSI/MSIX vectors via RTAS
hypercalls which return global IRQ numbers to a guest so it only
operates with those and never touches MSIMessage.

Therefore MSIMessage handling is completely hidden in QEMU.

Previously every sPAPR PCI host bridge implemented its own MSI window
to catch msi_notify()/msix_notify() calls from QEMU devices (virtio-pci
or vfio) and route them to the guest via qemu_pulse_irq().
MSIMessage used to be encoded as:
	.addr - address within the PHB MSI window;
	.data - the device index on PHB plus vector number.
The MSI MR write function translated this MSIMessage to a global IRQ
number and called qemu_pulse_irq().

However the total number of IRQs is not really big (at the moment it is
1024 IRQs starting from 4096) and even 16bit data field of MSIMessage
seems to be enough to store an IRQ number there.

This simplifies MSI handling in sPAPR PHB. Specifically, this does:
1. remove a MSI window from a PHB;
2. add a single memory region for all MSIs to sPAPREnvironment
and spapr_pci_msi_init() to initialize it;
3. encode MSIMessage as:
    * .addr - a fixed address of SPAPR_PCI_MSI_WINDOW==0x40000000000ULL;
    * .data as an IRQ number.
4. change IRQ allocator to align first IRQ number in a block for MSI.
MSI uses lower bits to specify the vector number so the first IRQ has to
be aligned. MSIX does not need any special allocator though.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2013-09-02 10:06:42 +02:00
audio aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
backends aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
block win32-aio: drop win32_aio_flush_cb() 2013-08-22 22:05:04 +02:00
bsd-user gdbstub: Change gdb_handlesig() argument to CPUState 2013-07-23 02:41:33 +02:00
default-configs default-configs: Fix A9MP and A15MP config names 2013-08-20 14:54:32 +01:00
disas disas/ppc.c: Fix little endian disassembly 2013-09-02 10:06:41 +02:00
docs q35: Add PCIe switch to example q35 configuration 2013-08-21 12:39:15 +03:00
dtc@bc895d6d09 dtc: add submodule 2013-04-18 13:50:53 +02:00
fpu softfloat: Fix shift128Right for shift counts 64..127 2013-06-10 11:36:12 -05:00
fsdev fsdev: Fix potential memory leak 2013-07-09 13:38:56 -05:00
gdb-xml
hw spapr-pci: rework MSI/MSIX 2013-09-02 10:06:42 +02:00
include spapr-pci: rework MSI/MSIX 2013-09-02 10:06:42 +02:00
libcacard libcacard: Fix cppcheck warning and remove unneeded code 2013-06-21 22:52:50 +04:00
linux-headers linux-headers: Update to v3.10-rc5 2013-06-12 13:19:10 +04:00
linux-user linux-user: Return success from m68k set_thread_area syscall 2013-07-29 19:56:52 -05:00
net aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
pc-bios Update OpenBIOS images 2013-07-30 23:11:07 +01:00
pixman@97336fad32
po po: Update all *.po files 2013-08-07 12:48:00 -05:00
qapi OptsVisitor: don't try to flatten overlong integer ranges 2013-08-20 11:52:00 -04:00
qga qga: escape cmdline args when registering win32 service (CVE-2013-2231) 2013-07-25 14:49:04 -05:00
QMP net: add support of mac-programming over macvtap in QEMU side 2013-07-15 21:23:08 +03:00
qobject Implement qdict_flatten() 2013-07-26 22:01:31 +02:00
qom qom: Introduce instance_post_init hook 2013-08-16 18:44:33 +02:00
roms Update OpenBIOS images 2013-07-30 23:11:07 +01:00
scripts Merge remote-tracking branch 'stefanha/block' into staging 2013-08-26 09:19:50 -05:00
slirp aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
stubs aio / timers: Rearrange timer.h & make legacy functions call non-legacy 2013-08-22 19:14:24 +02:00
sysconfigs/target
target-alpha aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
target-arm aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
target-cris cpu: Partially revert "cpu: Change qemu_init_vcpu() argument to CPUState" 2013-07-29 15:29:15 +02:00
target-i386 Merge remote-tracking branch 'qemu-kvm/uq/master' into stable-1.5 2013-08-29 17:21:51 -05:00
target-lm32 lm32_juart: Relocate and tidy header 2013-07-29 21:06:27 +02:00
target-m68k cpu: Partially revert "cpu: Change qemu_init_vcpu() argument to CPUState" 2013-07-29 15:29:15 +02:00
target-microblaze cpu: Partially revert "cpu: Change qemu_init_vcpu() argument to CPUState" 2013-07-29 15:29:15 +02:00
target-mips target-mips: fix get_physical_address() #if 0 build error 2013-08-28 19:28:02 +02:00
target-moxie cpu: Partially revert "cpu: Change qemu_init_vcpu() argument to CPUState" 2013-07-29 15:29:15 +02:00
target-openrisc cpu: Partially revert "cpu: Change qemu_init_vcpu() argument to CPUState" 2013-07-29 15:29:15 +02:00
target-ppc target-ppc: Use #define instead of opencoding SLB valid bit 2013-09-02 10:06:42 +02:00
target-s390x s390: wire up nmi command to raise a RESTART interrupt on S390 2013-08-30 14:16:48 +02:00
target-sh4 cpu: Partially revert "cpu: Change qemu_init_vcpu() argument to CPUState" 2013-07-29 15:29:15 +02:00
target-sparc cpu: Partially revert "cpu: Change qemu_init_vcpu() argument to CPUState" 2013-07-29 15:29:15 +02:00
target-unicore32 cpu: Partially revert "cpu: Change qemu_init_vcpu() argument to CPUState" 2013-07-29 15:29:15 +02:00
target-xtensa aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
tcg tcg-i386: Use new return-argument ld/st helpers 2013-08-26 13:31:54 -07:00
tests Merge remote-tracking branch 'stefanha/block' into staging 2013-08-26 09:19:50 -05:00
trace trace: Add ftrace tracing backend 2013-05-03 13:58:09 +02:00
ui gtk: Remove unused include statements which are not portable 2013-08-27 14:21:16 +02:00
util qemu-option: Guard against qemu_opts_set_defaults() misuse 2013-08-12 09:15:37 -05:00
.exrc
.gitignore OptsVisitor: introduce unit tests, with test cases for range flattening 2013-08-20 11:52:00 -04:00
.gitmodules pc-bios: Update palcode-clipper 2013-07-18 08:17:42 -07:00
.mailmap Change email address 2013-08-19 08:49:37 -05:00
aio-posix.c aio / timers: Convert aio_poll to use AioContext timers' deadline 2013-08-22 19:10:28 +02:00
aio-win32.c aio-win32: replace incorrect AioHandler->opaque usage with ->e 2013-08-22 22:04:54 +02:00
arch_init.c pc,pci,virtio fixes and cleanups 2013-08-29 17:19:19 -05:00
async.c aio / timers: aio_ctx_prepare sets timeout from AioContext timers 2013-08-22 19:10:28 +02:00
balloon.c
block-migration.c block-migration: efficiently encode zero blocks 2013-07-19 12:29:21 +08:00
block.c aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
blockdev-nbd.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
blockdev.c aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
blockjob.c aio / timers: convert block_job_sleep_ns and co_sleep_ns to new API 2013-08-22 19:14:24 +02:00
bt-host.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
bt-vhci.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
Changelog
CODING_STYLE
configure aio / timers: Add prctl(PR_SET_TIMERSLACK, 1, ...) to reduce timer slack 2013-08-22 19:10:27 +02:00
COPYING
COPYING.LIB
coroutine-gthread.c
coroutine-sigaltstack.c Merge remote-tracking branch 'kwolf/for-anthony' into staging 2013-02-26 07:44:39 -06:00
coroutine-ucontext.c Fix warnings suppressors to honor --disable-werror 2013-04-17 10:28:04 -05:00
coroutine-win32.c
cpu-exec.c cpu: Move singlestep_enabled field from CPU_COMMON to CPUState 2013-07-23 02:41:32 +02:00
cpus.c s390: wire up nmi command to raise a RESTART interrupt on S390 2013-08-30 14:16:48 +02:00
cputlb.c cpu: Make first_cpu and next_cpu CPUState 2013-07-09 21:32:54 +02:00
device_tree.c device_tree: Add qemu_devtree_setprop_sized_cells() utility functions 2013-07-19 12:58:46 +01:00
device-hotplug.c hw: move device-hotplug.o to toplevel, compile it once 2013-03-01 13:57:13 +01:00
disas.c disas: Implement fallback to dump object code as hex 2013-08-24 07:26:45 +02:00
dma-helpers.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
dump.c dump: rebase from host-private RAMBlock offsets to guest-physical addresses 2013-08-08 11:01:46 -04:00
exec.c cpu: Fix VMSTATE_CPU() semantics 2013-07-31 21:03:59 +02:00
gdbstub.c gdbstub: Fix gdb_register_coprocessor() register counting 2013-08-16 18:44:33 +02:00
HACKING HACKING: Document vaddr type usage 2013-07-23 02:41:31 +02:00
hmp-commands.hx Merge remote-tracking branch 'luiz/queue/qmp' into staging 2013-08-30 12:26:04 -05:00
hmp.c aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
hmp.h block: add drive_backup HMP command 2013-07-15 09:49:00 +02:00
iohandler.c
ioport.c Revert "ioport: remove LITTLE_ENDIAN mark for portio" 2013-07-25 08:12:27 -05:00
kvm-all.c Merge remote-tracking branch 'qemu-kvm/uq/master' into stable-1.5 2013-08-29 17:21:51 -05:00
kvm-stub.c Merge remote-tracking branch 'qemu-kvm/uq/master' into stable-1.5 2013-08-29 17:21:51 -05:00
LICENSE LICENSE: clarify 2013-08-12 09:15:12 -05:00
main-loop.c aio / timers: Rearrange timer.h & make legacy functions call non-legacy 2013-08-22 19:14:24 +02:00
MAINTAINERS MAINTAINERS: Take over 0.15 maintenance 2013-08-22 17:27:43 +02:00
Makefile w32: Fix broken out-of-tree builds (missing version.o) 2013-08-27 14:21:16 +02:00
Makefile.objs w32: Add missing version.o to all executables (fix regression) 2013-08-12 09:19:05 -05:00
Makefile.target build: do not use TARGET_ARCH 2013-06-14 15:33:10 +01:00
memory_mapping.c dump: rebase from host-private RAMBlock offsets to guest-physical addresses 2013-08-08 11:01:46 -04:00
memory.c memory.c: drop kvm.h dependency 2013-08-02 18:05:16 +04:00
migration-exec.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration-fd.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration-rdma.c rdma: IPv6 over Ethernet (RoCE) is broken in linux - workaround 2013-08-12 09:31:16 -05:00
migration-tcp.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration-unix.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration.c aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
monitor.c monitor: improve auto complete of "help" for single command in sub group 2013-08-30 07:41:15 -04:00
nbd.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
os-posix.c Add option to mlock qemu and guest memory 2013-04-22 08:52:23 -05:00
os-win32.c qemu-timer: move timeBeginPeriod/timeEndPeriod to os-win32 2013-04-12 18:27:16 +02:00
page_cache.c remove some double-includes 2013-05-18 16:35:12 +04:00
qapi-schema.json qapi: Rename ChardevBackend member "memory" to "ringbuf" 2013-07-29 10:37:12 -05:00
qdev-monitor.c qemu-help: Sort devices by logical functionality 2013-07-29 10:37:09 -05:00
qdict-test-data.txt
qemu-bridge-helper.c qemu-bridge-helper: force usage of a very high MAC address for the bridge 2013-03-28 12:58:52 -05:00
qemu-char.c Merge remote-tracking branch 'stefanha/block' into staging 2013-08-26 09:19:50 -05:00
qemu-coroutine-io.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
qemu-coroutine-lock.c block: Repair the throttling code. 2013-07-29 17:07:37 +02:00
qemu-coroutine-sleep.c aio / timers: convert block_job_sleep_ns and co_sleep_ns to new API 2013-08-22 19:14:24 +02:00
qemu-coroutine.c coroutine: stop using AioContext in CoQueue 2013-05-24 16:17:56 +02:00
qemu-doc.texi doc: we use seabios, not bochs bios 2013-06-28 22:10:34 +04:00
qemu-img-cmds.hx qemu-img: Add compare subcommand 2013-02-22 21:21:10 +01:00
qemu-img.c ignore SIGPIPE in qemu-img and qemu-io 2013-08-06 10:41:56 +02:00
qemu-img.texi qemu-img: Add compare subcommand 2013-02-22 21:21:10 +01:00
qemu-io-cmds.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
qemu-io.c ignore SIGPIPE in qemu-img and qemu-io 2013-08-06 10:41:56 +02:00
qemu-log.c qemu-log: default to stderr for logging output 2013-02-26 13:31:47 -06:00
qemu-nbd.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
qemu-nbd.texi Add -f FMT / --format FMT arg to qemu-nbd 2013-04-15 14:29:20 -05:00
qemu-options-wrapper.h
qemu-options.h
qemu-options.hx Revert "chardev: Make the name of memory device consistent" 2013-07-29 10:37:11 -05:00
qemu-seccomp.c seccomp: add arch_prctl() to the syscall whitelist 2013-07-29 19:56:52 -05:00
qemu-tech.texi
qemu-timer.c aio / timers: Remove legacy interface 2013-08-22 19:14:24 +02:00
qemu.nsi w32, w64: Add build rule for installer 2013-07-29 11:43:37 +02:00
qemu.sasl Fix command example in qemu.sasl 2013-07-19 12:52:03 +04:00
qmp-commands.hx s390: wire up nmi command to raise a RESTART interrupt on S390 2013-08-30 14:16:48 +02:00
qmp.c QMP: Add cpu-add command 2013-05-01 13:06:07 +02:00
qtest.c aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
readline.c monitor: avoid use of global *cur_mon in readline_completion() 2013-08-30 07:41:14 -04:00
README
rules.mak win32: fix compilation again 2013-05-03 12:04:40 -05:00
savevm.c aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
spice-qemu-char.c qemu-char: don't issue CHR_EVENT_OPEN in a BH 2013-06-10 11:38:37 -05:00
tcg-runtime.c tcg: Implement multiword multiply helpers 2013-02-23 17:25:28 +00:00
tci.c tci: Make tcg temporaries local to tcg_qemu_tb_exec 2013-04-11 19:58:21 +02:00
thread-pool.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
thunk.c
tpm.c tpm.c: Don't try to put -1 in a variable of type TpmModel 2013-07-29 10:37:10 -05:00
trace-events memory: add tracepoints for MMIO reads/writes 2013-07-29 10:37:10 -05:00
translate-all.c linux-user: Unlock mmap_lock when resuming guest from page_unprotect 2013-07-23 17:28:28 +03:00
translate-all.h
user-exec.c linux-user: fix segmentation fault passing with h2g(x) != x 2013-07-23 17:28:28 +03:00
VERSION Open up 1.7 development branch 2013-08-15 15:41:13 -05:00
version.rc w32: Add an icon resource 2013-08-27 14:21:16 +02:00
vl.c Merge remote-tracking branch 'stefanha/block' into staging 2013-08-26 09:19:50 -05:00
xbzrle.c
xen-all.c aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
xen-mapcache.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
xen-stub.c Allow use of pc machine type (accel=xen) for Xen HVM domains. 2013-06-25 12:00:48 +00:00

README 

Read the documentation in qemu-doc.html or on http://wiki.qemu.org

- QEMU team