2009-07-13 17:02:34 -06:00
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/*
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* Copyright (c) 2009, Microsoft Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place - Suite 330, Boston, MA 02111-1307 USA.
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*
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* Authors:
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* Haiyang Zhang <haiyangz@microsoft.com>
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* Hank Janssen <hjanssen@microsoft.com>
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*
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*/
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2009-08-17 18:22:08 -06:00
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#include <linux/kernel.h>
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#include <linux/mm.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 02:04:11 -06:00
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#include <linux/slab.h>
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2009-07-29 15:00:13 -06:00
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#include <linux/vmalloc.h>
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2011-02-11 11:00:12 -07:00
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#include "hv_api.h"
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2009-08-28 17:22:59 -06:00
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#include "logging.h"
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2010-05-05 23:45:25 -06:00
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#include "vmbus_private.h"
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2009-07-13 17:02:34 -06:00
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2009-07-27 14:47:24 -06:00
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/* The one and only */
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2010-11-08 15:04:40 -07:00
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struct hv_context hv_context = {
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.synic_initialized = false,
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.hypercall_page = NULL,
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.signal_event_param = NULL,
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.signal_event_buffer = NULL,
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2009-07-13 17:02:34 -06:00
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};
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2010-03-04 15:11:00 -07:00
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/*
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2010-11-08 15:04:42 -07:00
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* query_hypervisor_presence
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* - Query the cpuid for presense of windows hypervisor
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2009-08-31 21:23:33 -06:00
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*/
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2010-11-08 15:04:42 -07:00
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static int query_hypervisor_presence(void)
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2009-07-13 17:02:34 -06:00
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{
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2009-08-31 21:23:33 -06:00
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unsigned int eax;
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unsigned int ebx;
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unsigned int ecx;
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unsigned int edx;
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unsigned int op;
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2009-07-13 17:02:34 -06:00
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2009-07-27 14:47:24 -06:00
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eax = 0;
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ebx = 0;
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ecx = 0;
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edx = 0;
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2010-11-08 15:04:39 -07:00
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op = HVCPUID_VERSION_FEATURES;
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2009-07-29 16:37:12 -06:00
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cpuid(op, &eax, &ebx, &ecx, &edx);
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2009-08-31 21:23:33 -06:00
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return ecx & HV_PRESENT_BIT;
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2009-07-13 17:02:34 -06:00
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}
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2010-03-04 15:11:00 -07:00
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/*
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2010-11-08 15:04:42 -07:00
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* query_hypervisor_info - Get version info of the windows hypervisor
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2009-08-31 21:23:33 -06:00
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*/
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2010-11-08 15:04:42 -07:00
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static int query_hypervisor_info(void)
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2009-08-31 21:23:33 -06:00
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{
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unsigned int eax;
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unsigned int ebx;
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unsigned int ecx;
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unsigned int edx;
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2010-11-08 15:04:41 -07:00
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unsigned int max_leaf;
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2009-08-31 21:23:33 -06:00
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unsigned int op;
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2009-07-13 17:02:34 -06:00
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2009-08-31 21:23:33 -06:00
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/*
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* Its assumed that this is called after confirming that Viridian
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* is present. Query id and revision.
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*/
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eax = 0;
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ebx = 0;
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ecx = 0;
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edx = 0;
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2010-11-08 15:04:39 -07:00
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op = HVCPUID_VENDOR_MAXFUNCTION;
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2009-08-31 21:23:33 -06:00
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cpuid(op, &eax, &ebx, &ecx, &edx);
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2009-07-13 17:02:34 -06:00
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2009-08-31 21:23:33 -06:00
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DPRINT_INFO(VMBUS, "Vendor ID: %c%c%c%c%c%c%c%c%c%c%c%c",
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(ebx & 0xFF),
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((ebx >> 8) & 0xFF),
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((ebx >> 16) & 0xFF),
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((ebx >> 24) & 0xFF),
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(ecx & 0xFF),
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((ecx >> 8) & 0xFF),
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((ecx >> 16) & 0xFF),
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((ecx >> 24) & 0xFF),
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(edx & 0xFF),
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((edx >> 8) & 0xFF),
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((edx >> 16) & 0xFF),
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((edx >> 24) & 0xFF));
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2010-11-08 15:04:41 -07:00
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max_leaf = eax;
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2009-08-31 21:23:33 -06:00
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eax = 0;
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ebx = 0;
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ecx = 0;
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edx = 0;
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2010-11-08 15:04:39 -07:00
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op = HVCPUID_INTERFACE;
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2009-08-31 21:23:33 -06:00
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cpuid(op, &eax, &ebx, &ecx, &edx);
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2009-07-13 17:02:34 -06:00
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2009-08-31 21:23:33 -06:00
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DPRINT_INFO(VMBUS, "Interface ID: %c%c%c%c",
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(eax & 0xFF),
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((eax >> 8) & 0xFF),
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((eax >> 16) & 0xFF),
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((eax >> 24) & 0xFF));
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2010-11-08 15:04:41 -07:00
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if (max_leaf >= HVCPUID_VERSION) {
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2009-08-31 21:23:33 -06:00
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eax = 0;
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ebx = 0;
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ecx = 0;
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edx = 0;
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2010-11-08 15:04:39 -07:00
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op = HVCPUID_VERSION;
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2009-08-31 21:23:33 -06:00
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cpuid(op, &eax, &ebx, &ecx, &edx);
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DPRINT_INFO(VMBUS, "OS Build:%d-%d.%d-%d-%d.%d",\
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eax,
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ebx >> 16,
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ebx & 0xFFFF,
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ecx,
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edx >> 24,
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edx & 0xFFFFFF);
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}
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2010-11-08 15:04:41 -07:00
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return max_leaf;
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2009-08-31 21:23:33 -06:00
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}
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2009-07-13 17:02:34 -06:00
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2010-03-04 15:11:00 -07:00
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/*
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2010-11-08 15:04:42 -07:00
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* do_hypercall- Invoke the specified hypercall
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2009-08-31 21:23:33 -06:00
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*/
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2010-11-08 15:04:42 -07:00
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static u64 do_hypercall(u64 control, void *input, void *output)
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2009-07-13 17:02:34 -06:00
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{
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2009-07-16 23:31:15 -06:00
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#ifdef CONFIG_X86_64
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2010-11-08 15:04:41 -07:00
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u64 hv_status = 0;
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u64 input_address = (input) ? virt_to_phys(input) : 0;
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u64 output_address = (output) ? virt_to_phys(output) : 0;
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volatile void *hypercall_page = hv_context.hypercall_page;
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2009-07-13 17:02:34 -06:00
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2009-08-31 21:23:33 -06:00
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DPRINT_DBG(VMBUS, "Hypercall <control %llx input phys %llx virt %p "
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"output phys %llx virt %p hypercall %p>",
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2010-11-08 15:04:41 -07:00
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control, input_address, input,
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output_address, output, hypercall_page);
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2009-07-13 17:02:34 -06:00
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2010-11-08 15:04:41 -07:00
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__asm__ __volatile__("mov %0, %%r8" : : "r" (output_address) : "r8");
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__asm__ __volatile__("call *%3" : "=a" (hv_status) :
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"c" (control), "d" (input_address),
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"m" (hypercall_page));
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2009-07-13 17:02:34 -06:00
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2010-11-08 15:04:41 -07:00
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DPRINT_DBG(VMBUS, "Hypercall <return %llx>", hv_status);
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2009-07-13 17:02:34 -06:00
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2010-11-08 15:04:41 -07:00
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return hv_status;
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2009-07-13 17:02:34 -06:00
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#else
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2010-11-08 15:04:41 -07:00
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u32 control_hi = control >> 32;
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u32 control_lo = control & 0xFFFFFFFF;
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u32 hv_status_hi = 1;
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u32 hv_status_lo = 1;
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u64 input_address = (input) ? virt_to_phys(input) : 0;
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u32 input_address_hi = input_address >> 32;
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u32 input_address_lo = input_address & 0xFFFFFFFF;
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u64 output_address = (output) ? virt_to_phys(output) : 0;
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u32 output_address_hi = output_address >> 32;
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u32 output_address_lo = output_address & 0xFFFFFFFF;
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volatile void *hypercall_page = hv_context.hypercall_page;
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2009-07-13 17:02:34 -06:00
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2009-08-31 21:23:33 -06:00
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DPRINT_DBG(VMBUS, "Hypercall <control %llx input %p output %p>",
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2010-11-08 15:04:41 -07:00
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control, input, output);
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2009-07-13 17:02:34 -06:00
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2010-11-08 15:04:41 -07:00
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__asm__ __volatile__ ("call *%8" : "=d"(hv_status_hi),
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"=a"(hv_status_lo) : "d" (control_hi),
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"a" (control_lo), "b" (input_address_hi),
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"c" (input_address_lo), "D"(output_address_hi),
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"S"(output_address_lo), "m" (hypercall_page));
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2009-07-13 17:02:34 -06:00
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2009-08-31 21:23:33 -06:00
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DPRINT_DBG(VMBUS, "Hypercall <return %llx>",
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2010-11-08 15:04:41 -07:00
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hv_status_lo | ((u64)hv_status_hi << 32));
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2009-07-13 17:02:34 -06:00
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2010-11-08 15:04:41 -07:00
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return hv_status_lo | ((u64)hv_status_hi << 32);
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2009-08-31 21:23:33 -06:00
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#endif /* !x86_64 */
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2009-07-13 17:02:34 -06:00
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}
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2010-03-04 15:11:00 -07:00
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/*
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2010-11-08 15:04:42 -07:00
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* hv_init - Main initialization routine.
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2009-08-31 21:23:33 -06:00
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*
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* This routine must be called before any other routines in here are called
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*/
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2010-11-08 15:04:42 -07:00
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int hv_init(void)
|
2009-07-13 17:02:34 -06:00
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{
|
2009-08-31 21:23:33 -06:00
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int ret = 0;
|
2010-11-08 15:04:41 -07:00
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int max_leaf;
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union hv_x64_msr_hypercall_contents hypercall_msr;
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void *virtaddr = NULL;
|
2009-07-13 17:02:34 -06:00
|
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2010-11-08 15:04:40 -07:00
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memset(hv_context.synic_event_page, 0, sizeof(void *) * MAX_NUM_CPUS);
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memset(hv_context.synic_message_page, 0,
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sizeof(void *) * MAX_NUM_CPUS);
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2009-07-13 17:02:34 -06:00
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2010-11-08 15:04:42 -07:00
|
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if (!query_hypervisor_presence()) {
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2009-07-13 17:02:34 -06:00
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DPRINT_ERR(VMBUS, "No Windows hypervisor detected!!");
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goto Cleanup;
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}
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2009-08-31 21:23:33 -06:00
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DPRINT_INFO(VMBUS,
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"Windows hypervisor detected! Retrieving more info...");
|
2009-07-13 17:02:34 -06:00
|
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2010-11-08 15:04:42 -07:00
|
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max_leaf = query_hypervisor_info();
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2009-08-31 21:23:33 -06:00
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/* HvQueryHypervisorFeatures(maxLeaf); */
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2009-07-13 17:02:34 -06:00
|
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|
2009-08-31 21:23:33 -06:00
|
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/*
|
2010-01-22 12:17:50 -07:00
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* We only support running on top of Hyper-V
|
2009-08-31 21:23:33 -06:00
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*/
|
2010-11-08 15:04:40 -07:00
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rdmsrl(HV_X64_MSR_GUEST_OS_ID, hv_context.guestid);
|
2010-01-22 12:17:50 -07:00
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|
2010-11-08 15:04:40 -07:00
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if (hv_context.guestid != 0) {
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2010-01-22 12:17:50 -07:00
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DPRINT_ERR(VMBUS, "Unknown guest id (0x%llx)!!",
|
2010-11-08 15:04:40 -07:00
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hv_context.guestid);
|
2010-01-22 12:17:50 -07:00
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goto Cleanup;
|
2009-07-13 17:02:34 -06:00
|
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}
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|
2010-01-22 12:17:50 -07:00
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/* Write our OS info */
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wrmsrl(HV_X64_MSR_GUEST_OS_ID, HV_LINUX_GUEST_ID);
|
2010-11-08 15:04:40 -07:00
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hv_context.guestid = HV_LINUX_GUEST_ID;
|
2010-01-22 12:17:50 -07:00
|
|
|
|
2009-07-27 14:47:24 -06:00
|
|
|
/* See if the hypercall page is already set */
|
2010-11-08 15:04:41 -07:00
|
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rdmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
|
2009-07-13 17:02:34 -06:00
|
|
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|
2010-01-22 12:17:50 -07:00
|
|
|
/*
|
|
|
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* Allocate the hypercall page memory
|
2010-11-08 15:04:44 -07:00
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|
|
* virtaddr = osd_page_alloc(1);
|
2010-01-22 12:17:50 -07:00
|
|
|
*/
|
2011-02-11 10:59:00 -07:00
|
|
|
virtaddr = __vmalloc(PAGE_SIZE, GFP_KERNEL, PAGE_KERNEL_EXEC);
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:41 -07:00
|
|
|
if (!virtaddr) {
|
2010-01-22 12:17:50 -07:00
|
|
|
DPRINT_ERR(VMBUS,
|
|
|
|
"unable to allocate hypercall page!!");
|
|
|
|
goto Cleanup;
|
|
|
|
}
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:41 -07:00
|
|
|
hypercall_msr.enable = 1;
|
2010-01-22 12:17:50 -07:00
|
|
|
|
2010-11-08 15:04:41 -07:00
|
|
|
hypercall_msr.guest_physical_address = vmalloc_to_pfn(virtaddr);
|
|
|
|
wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
|
2010-01-22 12:17:50 -07:00
|
|
|
|
|
|
|
/* Confirm that hypercall page did get setup. */
|
2010-11-08 15:04:41 -07:00
|
|
|
hypercall_msr.as_uint64 = 0;
|
|
|
|
rdmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
|
2010-01-22 12:17:50 -07:00
|
|
|
|
2010-11-08 15:04:41 -07:00
|
|
|
if (!hypercall_msr.enable) {
|
2010-01-22 12:17:50 -07:00
|
|
|
DPRINT_ERR(VMBUS, "unable to set hypercall page!!");
|
2009-07-13 17:02:34 -06:00
|
|
|
goto Cleanup;
|
|
|
|
}
|
|
|
|
|
2010-11-08 15:04:41 -07:00
|
|
|
hv_context.hypercall_page = virtaddr;
|
2010-01-22 12:17:50 -07:00
|
|
|
|
2009-07-16 13:36:37 -06:00
|
|
|
DPRINT_INFO(VMBUS, "Hypercall page VA=%p, PA=0x%0llx",
|
2010-11-08 15:04:40 -07:00
|
|
|
hv_context.hypercall_page,
|
2010-11-08 15:04:41 -07:00
|
|
|
(u64)hypercall_msr.guest_physical_address << PAGE_SHIFT);
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2009-07-27 14:47:24 -06:00
|
|
|
/* Setup the global signal event param for the signal event hypercall */
|
2010-11-08 15:04:40 -07:00
|
|
|
hv_context.signal_event_buffer =
|
2009-08-31 21:23:33 -06:00
|
|
|
kmalloc(sizeof(struct hv_input_signal_event_buffer),
|
|
|
|
GFP_KERNEL);
|
2010-11-08 15:04:40 -07:00
|
|
|
if (!hv_context.signal_event_buffer)
|
2009-07-13 17:02:34 -06:00
|
|
|
goto Cleanup;
|
|
|
|
|
2010-11-08 15:04:40 -07:00
|
|
|
hv_context.signal_event_param =
|
2009-08-31 21:23:33 -06:00
|
|
|
(struct hv_input_signal_event *)
|
2011-01-20 01:32:01 -07:00
|
|
|
(ALIGN((unsigned long)
|
2010-11-08 15:04:40 -07:00
|
|
|
hv_context.signal_event_buffer,
|
2009-08-31 21:23:33 -06:00
|
|
|
HV_HYPERCALL_PARAM_ALIGN));
|
2010-11-08 15:04:40 -07:00
|
|
|
hv_context.signal_event_param->connectionid.asu32 = 0;
|
|
|
|
hv_context.signal_event_param->connectionid.u.id =
|
2009-08-31 21:23:33 -06:00
|
|
|
VMBUS_EVENT_CONNECTION_ID;
|
2010-11-08 15:04:40 -07:00
|
|
|
hv_context.signal_event_param->flag_number = 0;
|
|
|
|
hv_context.signal_event_param->rsvdz = 0;
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2009-08-31 21:23:33 -06:00
|
|
|
return ret;
|
2009-07-13 17:02:34 -06:00
|
|
|
|
|
|
|
Cleanup:
|
2010-11-08 15:04:41 -07:00
|
|
|
if (virtaddr) {
|
|
|
|
if (hypercall_msr.enable) {
|
|
|
|
hypercall_msr.as_uint64 = 0;
|
|
|
|
wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
|
2009-07-13 17:02:34 -06:00
|
|
|
}
|
|
|
|
|
2010-11-08 15:04:41 -07:00
|
|
|
vfree(virtaddr);
|
2009-07-13 17:02:34 -06:00
|
|
|
}
|
|
|
|
ret = -1;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2010-03-04 15:11:00 -07:00
|
|
|
/*
|
2010-11-08 15:04:42 -07:00
|
|
|
* hv_cleanup - Cleanup routine.
|
2009-08-31 21:23:33 -06:00
|
|
|
*
|
|
|
|
* This routine is called normally during driver unloading or exiting.
|
|
|
|
*/
|
2010-11-08 15:04:42 -07:00
|
|
|
void hv_cleanup(void)
|
2009-07-13 17:02:34 -06:00
|
|
|
{
|
2010-11-08 15:04:41 -07:00
|
|
|
union hv_x64_msr_hypercall_contents hypercall_msr;
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:40 -07:00
|
|
|
kfree(hv_context.signal_event_buffer);
|
|
|
|
hv_context.signal_event_buffer = NULL;
|
|
|
|
hv_context.signal_event_param = NULL;
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:40 -07:00
|
|
|
if (hv_context.hypercall_page) {
|
2010-11-08 15:04:41 -07:00
|
|
|
hypercall_msr.as_uint64 = 0;
|
|
|
|
wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
|
2010-11-08 15:04:40 -07:00
|
|
|
vfree(hv_context.hypercall_page);
|
|
|
|
hv_context.hypercall_page = NULL;
|
2009-07-13 17:02:34 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-03-04 15:11:00 -07:00
|
|
|
/*
|
2010-11-08 15:04:42 -07:00
|
|
|
* hv_post_message - Post a message using the hypervisor message IPC.
|
2009-08-31 21:23:33 -06:00
|
|
|
*
|
|
|
|
* This involves a hypercall.
|
|
|
|
*/
|
2010-11-08 15:04:42 -07:00
|
|
|
u16 hv_post_message(union hv_connection_id connection_id,
|
2010-11-08 15:04:41 -07:00
|
|
|
enum hv_message_type message_type,
|
|
|
|
void *payload, size_t payload_size)
|
2009-07-13 17:02:34 -06:00
|
|
|
{
|
2010-11-08 15:04:41 -07:00
|
|
|
struct aligned_input {
|
2009-08-31 21:23:33 -06:00
|
|
|
u64 alignment8;
|
2009-08-19 17:21:28 -06:00
|
|
|
struct hv_input_post_message msg;
|
2009-07-13 17:02:34 -06:00
|
|
|
};
|
|
|
|
|
2010-11-08 15:04:41 -07:00
|
|
|
struct hv_input_post_message *aligned_msg;
|
2009-08-20 13:14:11 -06:00
|
|
|
u16 status;
|
2009-07-14 16:12:46 -06:00
|
|
|
unsigned long addr;
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:41 -07:00
|
|
|
if (payload_size > HV_MESSAGE_PAYLOAD_BYTE_COUNT)
|
2009-07-13 17:02:34 -06:00
|
|
|
return -1;
|
|
|
|
|
2010-11-08 15:04:41 -07:00
|
|
|
addr = (unsigned long)kmalloc(sizeof(struct aligned_input), GFP_ATOMIC);
|
2009-07-13 17:02:34 -06:00
|
|
|
if (!addr)
|
|
|
|
return -1;
|
|
|
|
|
2010-11-08 15:04:41 -07:00
|
|
|
aligned_msg = (struct hv_input_post_message *)
|
2011-01-20 01:32:01 -07:00
|
|
|
(ALIGN(addr, HV_HYPERCALL_PARAM_ALIGN));
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:41 -07:00
|
|
|
aligned_msg->connectionid = connection_id;
|
|
|
|
aligned_msg->message_type = message_type;
|
|
|
|
aligned_msg->payload_size = payload_size;
|
|
|
|
memcpy((void *)aligned_msg->payload, payload, payload_size);
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:42 -07:00
|
|
|
status = do_hypercall(HVCALL_POST_MESSAGE, aligned_msg, NULL)
|
|
|
|
& 0xFFFF;
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2009-08-31 21:23:33 -06:00
|
|
|
kfree((void *)addr);
|
2009-07-13 17:02:34 -06:00
|
|
|
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-03-04 15:11:00 -07:00
|
|
|
/*
|
2010-11-08 15:04:42 -07:00
|
|
|
* hv_signal_event -
|
|
|
|
* Signal an event on the specified connection using the hypervisor event IPC.
|
2009-08-31 21:23:33 -06:00
|
|
|
*
|
|
|
|
* This involves a hypercall.
|
|
|
|
*/
|
2010-11-08 15:04:42 -07:00
|
|
|
u16 hv_signal_event(void)
|
2009-07-13 17:02:34 -06:00
|
|
|
{
|
2009-08-20 13:14:11 -06:00
|
|
|
u16 status;
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:42 -07:00
|
|
|
status = do_hypercall(HVCALL_SIGNAL_EVENT,
|
2010-11-08 15:04:40 -07:00
|
|
|
hv_context.signal_event_param,
|
2009-08-31 21:23:33 -06:00
|
|
|
NULL) & 0xFFFF;
|
2009-07-13 17:02:34 -06:00
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
2010-03-04 15:11:00 -07:00
|
|
|
/*
|
2010-11-08 15:04:42 -07:00
|
|
|
* hv_synic_init - Initialize the Synthethic Interrupt Controller.
|
2009-08-31 21:23:33 -06:00
|
|
|
*
|
|
|
|
* If it is already initialized by another entity (ie x2v shim), we need to
|
|
|
|
* retrieve the initialized message and event pages. Otherwise, we create and
|
|
|
|
* initialize the message and event pages.
|
|
|
|
*/
|
2010-11-08 15:04:42 -07:00
|
|
|
void hv_synic_init(void *irqarg)
|
2009-07-13 17:02:34 -06:00
|
|
|
{
|
2009-08-31 21:23:33 -06:00
|
|
|
u64 version;
|
2009-08-20 13:11:26 -06:00
|
|
|
union hv_synic_simp simp;
|
|
|
|
union hv_synic_siefp siefp;
|
2010-11-08 15:04:41 -07:00
|
|
|
union hv_synic_sint shared_sint;
|
2009-08-20 13:11:26 -06:00
|
|
|
union hv_synic_scontrol sctrl;
|
2010-01-22 12:17:50 -07:00
|
|
|
|
2010-11-08 15:04:41 -07:00
|
|
|
u32 irq_vector = *((u32 *)(irqarg));
|
2010-01-08 10:06:40 -07:00
|
|
|
int cpu = smp_processor_id();
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:40 -07:00
|
|
|
if (!hv_context.hypercall_page)
|
2010-01-08 10:06:40 -07:00
|
|
|
return;
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2009-07-27 14:47:24 -06:00
|
|
|
/* Check the version */
|
2009-08-17 18:20:02 -06:00
|
|
|
rdmsrl(HV_X64_MSR_SVERSION, version);
|
2009-07-13 17:02:34 -06:00
|
|
|
|
|
|
|
DPRINT_INFO(VMBUS, "SynIC version: %llx", version);
|
|
|
|
|
2010-11-08 15:04:40 -07:00
|
|
|
hv_context.synic_message_page[cpu] =
|
|
|
|
(void *)get_zeroed_page(GFP_ATOMIC);
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:40 -07:00
|
|
|
if (hv_context.synic_message_page[cpu] == NULL) {
|
2010-01-22 12:17:50 -07:00
|
|
|
DPRINT_ERR(VMBUS,
|
|
|
|
"unable to allocate SYNIC message page!!");
|
|
|
|
goto Cleanup;
|
|
|
|
}
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:40 -07:00
|
|
|
hv_context.synic_event_page[cpu] =
|
|
|
|
(void *)get_zeroed_page(GFP_ATOMIC);
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:40 -07:00
|
|
|
if (hv_context.synic_event_page[cpu] == NULL) {
|
2010-01-22 12:17:50 -07:00
|
|
|
DPRINT_ERR(VMBUS,
|
|
|
|
"unable to allocate SYNIC event page!!");
|
|
|
|
goto Cleanup;
|
|
|
|
}
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-01-22 12:17:50 -07:00
|
|
|
/* Setup the Synic's message page */
|
2010-11-08 15:04:39 -07:00
|
|
|
rdmsrl(HV_X64_MSR_SIMP, simp.as_uint64);
|
|
|
|
simp.simp_enabled = 1;
|
2010-11-08 15:04:40 -07:00
|
|
|
simp.base_simp_gpa = virt_to_phys(hv_context.synic_message_page[cpu])
|
2010-01-22 12:17:50 -07:00
|
|
|
>> PAGE_SHIFT;
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:39 -07:00
|
|
|
DPRINT_DBG(VMBUS, "HV_X64_MSR_SIMP msr set to: %llx", simp.as_uint64);
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:39 -07:00
|
|
|
wrmsrl(HV_X64_MSR_SIMP, simp.as_uint64);
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-01-22 12:17:50 -07:00
|
|
|
/* Setup the Synic's event page */
|
2010-11-08 15:04:39 -07:00
|
|
|
rdmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64);
|
|
|
|
siefp.siefp_enabled = 1;
|
2010-11-08 15:04:40 -07:00
|
|
|
siefp.base_siefp_gpa = virt_to_phys(hv_context.synic_event_page[cpu])
|
2010-01-22 12:17:50 -07:00
|
|
|
>> PAGE_SHIFT;
|
|
|
|
|
2010-11-08 15:04:39 -07:00
|
|
|
DPRINT_DBG(VMBUS, "HV_X64_MSR_SIEFP msr set to: %llx", siefp.as_uint64);
|
2010-01-22 12:17:50 -07:00
|
|
|
|
2010-11-08 15:04:39 -07:00
|
|
|
wrmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64);
|
2009-08-31 21:23:33 -06:00
|
|
|
|
|
|
|
/* Setup the interception SINT. */
|
2009-08-17 18:20:02 -06:00
|
|
|
/* wrmsrl((HV_X64_MSR_SINT0 + HV_SYNIC_INTERCEPTION_SINT_INDEX), */
|
2010-11-08 15:04:39 -07:00
|
|
|
/* interceptionSint.as_uint64); */
|
2009-07-27 14:47:24 -06:00
|
|
|
|
2009-08-31 21:23:33 -06:00
|
|
|
/* Setup the shared SINT. */
|
2010-11-08 15:04:41 -07:00
|
|
|
rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:41 -07:00
|
|
|
shared_sint.as_uint64 = 0;
|
|
|
|
shared_sint.vector = irq_vector; /* HV_SHARED_SINT_IDT_VECTOR + 0x20; */
|
|
|
|
shared_sint.masked = false;
|
|
|
|
shared_sint.auto_eoi = true;
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2009-08-31 21:23:33 -06:00
|
|
|
DPRINT_DBG(VMBUS, "HV_X64_MSR_SINT1 msr set to: %llx",
|
2010-11-08 15:04:41 -07:00
|
|
|
shared_sint.as_uint64);
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:41 -07:00
|
|
|
wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2009-07-27 14:47:24 -06:00
|
|
|
/* Enable the global synic bit */
|
2010-11-08 15:04:39 -07:00
|
|
|
rdmsrl(HV_X64_MSR_SCONTROL, sctrl.as_uint64);
|
|
|
|
sctrl.enable = 1;
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:39 -07:00
|
|
|
wrmsrl(HV_X64_MSR_SCONTROL, sctrl.as_uint64);
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:40 -07:00
|
|
|
hv_context.synic_initialized = true;
|
2010-01-08 10:06:40 -07:00
|
|
|
return;
|
2009-07-13 17:02:34 -06:00
|
|
|
|
|
|
|
Cleanup:
|
2010-11-08 15:04:40 -07:00
|
|
|
if (hv_context.synic_event_page[cpu])
|
2011-02-11 10:59:00 -07:00
|
|
|
free_page((unsigned long)hv_context.synic_event_page[cpu]);
|
2009-07-13 17:02:34 -06:00
|
|
|
|
2010-11-08 15:04:40 -07:00
|
|
|
if (hv_context.synic_message_page[cpu])
|
2011-02-11 10:59:00 -07:00
|
|
|
free_page((unsigned long)hv_context.synic_message_page[cpu]);
|
2010-01-08 10:06:40 -07:00
|
|
|
return;
|
2009-07-13 17:02:34 -06:00
|
|
|
}
|
|
|
|
|
2010-03-04 15:11:00 -07:00
|
|
|
/*
|
2010-11-08 15:04:42 -07:00
|
|
|
* hv_synic_cleanup - Cleanup routine for hv_synic_init().
|
2009-08-31 21:23:33 -06:00
|
|
|
*/
|
2010-11-08 15:04:42 -07:00
|
|
|
void hv_synic_cleanup(void *arg)
|
2009-07-13 17:02:34 -06:00
|
|
|
{
|
2010-11-08 15:04:41 -07:00
|
|
|
union hv_synic_sint shared_sint;
|
2009-08-20 13:11:26 -06:00
|
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union hv_synic_simp simp;
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union hv_synic_siefp siefp;
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2010-01-08 10:06:40 -07:00
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int cpu = smp_processor_id();
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2009-07-13 17:02:34 -06:00
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2010-11-08 15:04:40 -07:00
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if (!hv_context.synic_initialized)
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2009-07-13 17:02:34 -06:00
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return;
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2010-11-08 15:04:41 -07:00
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rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);
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2009-07-13 17:02:34 -06:00
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2010-11-08 15:04:41 -07:00
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shared_sint.masked = 1;
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2009-07-13 17:02:34 -06:00
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2010-01-08 10:06:40 -07:00
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/* Need to correctly cleanup in the case of SMP!!! */
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2009-07-27 14:47:24 -06:00
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/* Disable the interrupt */
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2010-11-08 15:04:41 -07:00
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wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);
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2009-07-13 17:02:34 -06:00
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2010-11-08 15:04:39 -07:00
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rdmsrl(HV_X64_MSR_SIMP, simp.as_uint64);
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simp.simp_enabled = 0;
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simp.base_simp_gpa = 0;
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2009-07-13 17:02:34 -06:00
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2010-11-08 15:04:39 -07:00
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wrmsrl(HV_X64_MSR_SIMP, simp.as_uint64);
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2009-07-13 17:02:34 -06:00
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2010-11-08 15:04:39 -07:00
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rdmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64);
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siefp.siefp_enabled = 0;
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siefp.base_siefp_gpa = 0;
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2009-07-13 17:02:34 -06:00
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2010-11-08 15:04:39 -07:00
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wrmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64);
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2009-07-13 17:02:34 -06:00
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2011-02-11 10:59:00 -07:00
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free_page((unsigned long)hv_context.synic_message_page[cpu]);
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free_page((unsigned long)hv_context.synic_event_page[cpu]);
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2009-07-13 17:02:34 -06:00
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}
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