2009-07-13 23:02:34 +00:00
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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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2009-08-18 00:22:08 +00:00
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#include <linux/kernel.h>
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#include <linux/mm.h>
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2009-07-29 21:00:13 +00:00
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#include <linux/vmalloc.h>
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2009-08-19 23:14:47 +00:00
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#include "osd.h"
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2009-08-28 23:22:59 +00:00
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#include "logging.h"
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2009-07-13 23:02:34 +00:00
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#include "VmbusPrivate.h"
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2009-07-27 20:47:24 +00:00
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/* The one and only */
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2009-08-18 22:20:34 +00:00
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struct hv_context gHvContext = {
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.SynICInitialized = false,
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.HypercallPage = NULL,
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.SignalEventParam = NULL,
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.SignalEventBuffer = NULL,
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2009-07-13 23:02:34 +00:00
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};
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2009-09-01 03:23:33 +00:00
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/**
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* HvQueryHypervisorPresence - Query the cpuid for presense of windows hypervisor
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*/
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static int HvQueryHypervisorPresence(void)
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2009-07-13 23:02:34 +00:00
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{
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2009-09-01 03:23:33 +00:00
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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 23:02:34 +00:00
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2009-07-27 20:47:24 +00:00
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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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2009-09-01 03:23:33 +00:00
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op = HvCpuIdFunctionVersionAndFeatures;
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2009-07-29 22:37:12 +00:00
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cpuid(op, &eax, &ebx, &ecx, &edx);
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2009-09-01 03:23:33 +00:00
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return ecx & HV_PRESENT_BIT;
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2009-07-13 23:02:34 +00:00
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}
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2009-09-01 03:23:33 +00:00
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/**
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* HvQueryHypervisorInfo - Get version info of the windows hypervisor
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*/
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static int HvQueryHypervisorInfo(void)
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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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unsigned int maxLeaf;
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unsigned int op;
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2009-07-13 23:02:34 +00:00
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2009-09-01 03:23:33 +00:00
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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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op = HvCpuIdFunctionHvVendorAndMaxFunction;
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cpuid(op, &eax, &ebx, &ecx, &edx);
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2009-07-13 23:02:34 +00:00
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2009-09-01 03:23:33 +00:00
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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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maxLeaf = eax;
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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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op = HvCpuIdFunctionHvInterface;
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cpuid(op, &eax, &ebx, &ecx, &edx);
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2009-07-13 23:02:34 +00:00
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2009-09-01 03:23:33 +00:00
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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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if (maxLeaf >= HvCpuIdFunctionMsHvVersion) {
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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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op = HvCpuIdFunctionMsHvVersion;
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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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return maxLeaf;
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}
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2009-07-13 23:02:34 +00:00
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2009-09-01 03:23:33 +00:00
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/**
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* HvDoHypercall - Invoke the specified hypercall
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*/
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static u64 HvDoHypercall(u64 Control, void *Input, void *Output)
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2009-07-13 23:02:34 +00:00
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{
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2009-07-17 05:31:15 +00:00
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#ifdef CONFIG_X86_64
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2009-09-01 03:23:33 +00:00
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u64 hvStatus = 0;
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u64 inputAddress = (Input) ? virt_to_phys(Input) : 0;
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u64 outputAddress = (Output) ? virt_to_phys(Output) : 0;
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volatile void *hypercallPage = gHvContext.HypercallPage;
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2009-07-13 23:02:34 +00:00
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2009-09-01 03:23:33 +00:00
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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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Control, inputAddress, Input,
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outputAddress, Output, hypercallPage);
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2009-07-13 23:02:34 +00:00
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2009-09-01 03:23:33 +00:00
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__asm__ __volatile__("mov %0, %%r8" : : "r" (outputAddress) : "r8");
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__asm__ __volatile__("call *%3" : "=a" (hvStatus) :
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"c" (Control), "d" (inputAddress),
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"m" (hypercallPage));
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2009-07-13 23:02:34 +00:00
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2009-09-01 03:23:33 +00:00
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DPRINT_DBG(VMBUS, "Hypercall <return %llx>", hvStatus);
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2009-07-13 23:02:34 +00:00
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2009-09-01 03:23:33 +00:00
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return hvStatus;
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2009-07-13 23:02:34 +00:00
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#else
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2009-09-01 03:23:33 +00:00
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u32 controlHi = Control >> 32;
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u32 controlLo = Control & 0xFFFFFFFF;
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u32 hvStatusHi = 1;
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u32 hvStatusLo = 1;
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u64 inputAddress = (Input) ? virt_to_phys(Input) : 0;
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u32 inputAddressHi = inputAddress >> 32;
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u32 inputAddressLo = inputAddress & 0xFFFFFFFF;
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2009-07-29 22:39:27 +00:00
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u64 outputAddress = (Output) ? virt_to_phys(Output) : 0;
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2009-09-01 03:23:33 +00:00
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u32 outputAddressHi = outputAddress >> 32;
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u32 outputAddressLo = outputAddress & 0xFFFFFFFF;
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volatile void *hypercallPage = gHvContext.HypercallPage;
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2009-07-13 23:02:34 +00:00
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2009-09-01 03:23:33 +00:00
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DPRINT_DBG(VMBUS, "Hypercall <control %llx input %p output %p>",
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Control, Input, Output);
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2009-07-13 23:02:34 +00:00
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2009-09-01 03:23:33 +00:00
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__asm__ __volatile__ ("call *%8" : "=d"(hvStatusHi),
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"=a"(hvStatusLo) : "d" (controlHi),
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"a" (controlLo), "b" (inputAddressHi),
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"c" (inputAddressLo), "D"(outputAddressHi),
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"S"(outputAddressLo), "m" (hypercallPage));
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2009-07-13 23:02:34 +00:00
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2009-09-01 03:23:33 +00:00
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DPRINT_DBG(VMBUS, "Hypercall <return %llx>",
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hvStatusLo | ((u64)hvStatusHi << 32));
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2009-07-13 23:02:34 +00:00
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2009-09-01 03:23:33 +00:00
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return hvStatusLo | ((u64)hvStatusHi << 32);
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#endif /* !x86_64 */
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2009-07-13 23:02:34 +00:00
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}
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2009-09-01 03:23:33 +00:00
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/**
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* HvInit - Main initialization routine.
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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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int HvInit(void)
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2009-07-13 23:02:34 +00:00
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{
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2009-09-01 03:23:33 +00:00
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int ret = 0;
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int maxLeaf;
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2009-08-20 19:09:34 +00:00
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union hv_x64_msr_hypercall_contents hypercallMsr;
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2009-07-29 16:06:51 +00:00
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void *virtAddr = NULL;
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2009-07-13 23:02:34 +00:00
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DPRINT_ENTER(VMBUS);
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2009-07-28 17:46:26 +00:00
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memset(gHvContext.synICEventPage, 0, sizeof(void *) * MAX_NUM_CPUS);
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memset(gHvContext.synICMessagePage, 0, sizeof(void *) * MAX_NUM_CPUS);
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2009-07-13 23:02:34 +00:00
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2009-09-01 03:23:33 +00:00
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if (!HvQueryHypervisorPresence()) {
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2009-07-13 23:02:34 +00:00
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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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2009-09-01 03:23:33 +00:00
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DPRINT_INFO(VMBUS,
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"Windows hypervisor detected! Retrieving more info...");
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2009-07-13 23:02:34 +00:00
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2009-09-01 03:23:33 +00:00
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maxLeaf = HvQueryHypervisorInfo();
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/* HvQueryHypervisorFeatures(maxLeaf); */
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2009-07-13 23:02:34 +00:00
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2009-09-01 03:23:33 +00:00
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/*
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* Determine if we are running on xenlinux (ie x2v shim) or native
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* linux
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*/
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2009-08-18 00:20:02 +00:00
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rdmsrl(HV_X64_MSR_GUEST_OS_ID, gHvContext.GuestId);
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2009-09-01 03:23:33 +00:00
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if (gHvContext.GuestId == 0) {
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2009-07-27 20:47:24 +00:00
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/* Write our OS info */
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2009-08-18 00:20:02 +00:00
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wrmsrl(HV_X64_MSR_GUEST_OS_ID, HV_LINUX_GUEST_ID);
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2009-07-13 23:02:34 +00:00
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gHvContext.GuestId = HV_LINUX_GUEST_ID;
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}
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2009-07-27 20:47:24 +00:00
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/* See if the hypercall page is already set */
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2009-08-18 00:20:02 +00:00
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rdmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64);
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2009-09-01 03:23:33 +00:00
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if (gHvContext.GuestId == HV_LINUX_GUEST_ID) {
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2009-07-27 20:47:24 +00:00
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/* Allocate the hypercall page memory */
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2009-07-29 22:40:18 +00:00
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/* virtAddr = osd_PageAlloc(1); */
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virtAddr = osd_VirtualAllocExec(PAGE_SIZE);
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2009-07-13 23:02:34 +00:00
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2009-09-01 03:23:33 +00:00
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if (!virtAddr) {
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DPRINT_ERR(VMBUS,
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"unable to allocate hypercall page!!");
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2009-07-13 23:02:34 +00:00
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goto Cleanup;
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}
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hypercallMsr.Enable = 1;
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2009-09-01 03:23:33 +00:00
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/* hypercallMsr.GuestPhysicalAddress =
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* virt_to_phys(virtAddr) >> PAGE_SHIFT; */
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2009-07-29 22:39:27 +00:00
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hypercallMsr.GuestPhysicalAddress = vmalloc_to_pfn(virtAddr);
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2009-08-18 00:20:02 +00:00
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wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64);
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2009-07-13 23:02:34 +00:00
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2009-09-01 03:23:33 +00:00
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/* Confirm that hypercall page did get setup. */
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2009-07-13 23:02:34 +00:00
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hypercallMsr.AsUINT64 = 0;
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2009-08-18 00:20:02 +00:00
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rdmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64);
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2009-09-01 03:23:33 +00:00
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if (!hypercallMsr.Enable) {
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2009-07-13 23:02:34 +00:00
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DPRINT_ERR(VMBUS, "unable to set hypercall page!!");
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goto Cleanup;
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}
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gHvContext.HypercallPage = virtAddr;
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2009-09-01 03:23:33 +00:00
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} else {
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DPRINT_ERR(VMBUS, "Unknown guest id (0x%llx)!!",
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gHvContext.GuestId);
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2009-07-13 23:02:34 +00:00
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goto Cleanup;
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}
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2009-07-16 19:36:37 +00:00
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DPRINT_INFO(VMBUS, "Hypercall page VA=%p, PA=0x%0llx",
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gHvContext.HypercallPage,
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(u64)hypercallMsr.GuestPhysicalAddress << PAGE_SHIFT);
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2009-07-13 23:02:34 +00:00
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2009-07-27 20:47:24 +00:00
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/* Setup the global signal event param for the signal event hypercall */
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2009-09-01 03:23:33 +00:00
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gHvContext.SignalEventBuffer =
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kmalloc(sizeof(struct hv_input_signal_event_buffer),
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GFP_KERNEL);
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2009-07-13 23:02:34 +00:00
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if (!gHvContext.SignalEventBuffer)
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goto Cleanup;
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2009-09-01 03:23:33 +00:00
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gHvContext.SignalEventParam =
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(struct hv_input_signal_event *)
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(ALIGN_UP((unsigned long)gHvContext.SignalEventBuffer,
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HV_HYPERCALL_PARAM_ALIGN));
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2009-07-14 22:09:36 +00:00
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gHvContext.SignalEventParam->ConnectionId.Asu32 = 0;
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2009-09-01 03:23:33 +00:00
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gHvContext.SignalEventParam->ConnectionId.u.Id =
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VMBUS_EVENT_CONNECTION_ID;
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2009-07-13 23:02:34 +00:00
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gHvContext.SignalEventParam->FlagNumber = 0;
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gHvContext.SignalEventParam->RsvdZ = 0;
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2009-09-01 03:23:33 +00:00
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/* DPRINT_DBG(VMBUS, "My id %llu", HvGetCurrentPartitionId()); */
|
2009-07-13 23:02:34 +00:00
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DPRINT_EXIT(VMBUS);
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2009-09-01 03:23:33 +00:00
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return ret;
|
2009-07-13 23:02:34 +00:00
|
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Cleanup:
|
2009-09-01 03:23:33 +00:00
|
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if (virtAddr) {
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if (hypercallMsr.Enable) {
|
2009-07-13 23:02:34 +00:00
|
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|
hypercallMsr.AsUINT64 = 0;
|
2009-08-18 00:20:02 +00:00
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wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
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|
}
|
|
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|
2009-07-29 21:00:13 +00:00
|
|
|
vfree(virtAddr);
|
2009-07-13 23:02:34 +00:00
|
|
|
}
|
|
|
|
ret = -1;
|
|
|
|
DPRINT_EXIT(VMBUS);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
/**
|
|
|
|
* HvCleanup - Cleanup routine.
|
|
|
|
*
|
|
|
|
* This routine is called normally during driver unloading or exiting.
|
|
|
|
*/
|
|
|
|
void HvCleanup(void)
|
2009-07-13 23:02:34 +00:00
|
|
|
{
|
2009-08-20 19:09:34 +00:00
|
|
|
union hv_x64_msr_hypercall_contents hypercallMsr;
|
2009-07-13 23:02:34 +00:00
|
|
|
|
|
|
|
DPRINT_ENTER(VMBUS);
|
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
if (gHvContext.SignalEventBuffer) {
|
2009-07-13 23:02:34 +00:00
|
|
|
gHvContext.SignalEventBuffer = NULL;
|
|
|
|
gHvContext.SignalEventParam = NULL;
|
2009-09-01 03:23:33 +00:00
|
|
|
kfree(gHvContext.SignalEventBuffer);
|
2009-07-13 23:02:34 +00:00
|
|
|
}
|
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
if (gHvContext.GuestId == HV_LINUX_GUEST_ID) {
|
|
|
|
if (gHvContext.HypercallPage) {
|
2009-07-13 23:02:34 +00:00
|
|
|
hypercallMsr.AsUINT64 = 0;
|
2009-08-18 00:20:02 +00:00
|
|
|
wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64);
|
2009-07-29 21:00:13 +00:00
|
|
|
vfree(gHvContext.HypercallPage);
|
2009-07-13 23:02:34 +00:00
|
|
|
gHvContext.HypercallPage = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
DPRINT_EXIT(VMBUS);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
/**
|
|
|
|
* HvPostMessage - Post a message using the hypervisor message IPC.
|
|
|
|
*
|
|
|
|
* This involves a hypercall.
|
|
|
|
*/
|
2009-08-20 19:14:11 +00:00
|
|
|
u16 HvPostMessage(union hv_connection_id connectionId,
|
|
|
|
enum hv_message_type messageType,
|
|
|
|
void *payload, size_t payloadSize)
|
2009-07-13 23:02:34 +00:00
|
|
|
{
|
|
|
|
struct alignedInput {
|
2009-09-01 03:23:33 +00:00
|
|
|
u64 alignment8;
|
2009-08-19 23:21:28 +00:00
|
|
|
struct hv_input_post_message msg;
|
2009-07-13 23:02:34 +00:00
|
|
|
};
|
|
|
|
|
2009-08-19 23:21:28 +00:00
|
|
|
struct hv_input_post_message *alignedMsg;
|
2009-08-20 19:14:11 +00:00
|
|
|
u16 status;
|
2009-07-14 22:12:46 +00:00
|
|
|
unsigned long addr;
|
2009-07-13 23:02:34 +00:00
|
|
|
|
|
|
|
if (payloadSize > HV_MESSAGE_PAYLOAD_BYTE_COUNT)
|
|
|
|
return -1;
|
|
|
|
|
2009-07-15 19:48:01 +00:00
|
|
|
addr = (unsigned long)kmalloc(sizeof(struct alignedInput), GFP_ATOMIC);
|
2009-07-13 23:02:34 +00:00
|
|
|
if (!addr)
|
|
|
|
return -1;
|
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
alignedMsg = (struct hv_input_post_message *)
|
|
|
|
(ALIGN_UP(addr, HV_HYPERCALL_PARAM_ALIGN));
|
2009-07-13 23:02:34 +00:00
|
|
|
|
|
|
|
alignedMsg->ConnectionId = connectionId;
|
|
|
|
alignedMsg->MessageType = messageType;
|
|
|
|
alignedMsg->PayloadSize = payloadSize;
|
2009-09-01 03:23:33 +00:00
|
|
|
memcpy((void *)alignedMsg->Payload, payload, payloadSize);
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-07-29 16:06:51 +00:00
|
|
|
status = HvDoHypercall(HvCallPostMessage, alignedMsg, NULL) & 0xFFFF;
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
kfree((void *)addr);
|
2009-07-13 23:02:34 +00:00
|
|
|
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
/**
|
|
|
|
* HvSignalEvent - Signal an event on the specified connection using the hypervisor event IPC.
|
|
|
|
*
|
|
|
|
* This involves a hypercall.
|
|
|
|
*/
|
2009-08-20 19:14:11 +00:00
|
|
|
u16 HvSignalEvent(void)
|
2009-07-13 23:02:34 +00:00
|
|
|
{
|
2009-08-20 19:14:11 +00:00
|
|
|
u16 status;
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
status = HvDoHypercall(HvCallSignalEvent, gHvContext.SignalEventParam,
|
|
|
|
NULL) & 0xFFFF;
|
2009-07-13 23:02:34 +00:00
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
/**
|
|
|
|
* HvSynicInit - Initialize the Synthethic Interrupt Controller.
|
|
|
|
*
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
int HvSynicInit(u32 irqVector)
|
2009-07-13 23:02:34 +00:00
|
|
|
{
|
2009-09-01 03:23:33 +00:00
|
|
|
u64 version;
|
2009-08-20 19:11:26 +00:00
|
|
|
union hv_synic_simp simp;
|
|
|
|
union hv_synic_siefp siefp;
|
|
|
|
union hv_synic_sint sharedSint;
|
|
|
|
union hv_synic_scontrol sctrl;
|
2009-09-01 03:23:33 +00:00
|
|
|
u64 guestID;
|
|
|
|
int ret = 0;
|
2009-07-13 23:02:34 +00:00
|
|
|
|
|
|
|
DPRINT_ENTER(VMBUS);
|
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
if (!gHvContext.HypercallPage) {
|
2009-07-13 23:02:34 +00:00
|
|
|
DPRINT_EXIT(VMBUS);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2009-07-27 20:47:24 +00:00
|
|
|
/* Check the version */
|
2009-08-18 00:20:02 +00:00
|
|
|
rdmsrl(HV_X64_MSR_SVERSION, version);
|
2009-07-13 23:02:34 +00:00
|
|
|
|
|
|
|
DPRINT_INFO(VMBUS, "SynIC version: %llx", version);
|
|
|
|
|
2009-07-27 20:47:24 +00:00
|
|
|
/* TODO: Handle SMP */
|
2009-09-01 03:23:33 +00:00
|
|
|
if (gHvContext.GuestId == HV_XENLINUX_GUEST_ID) {
|
|
|
|
DPRINT_INFO(VMBUS, "Skipping SIMP and SIEFP setup since "
|
|
|
|
"it is already set.");
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-08-18 00:20:02 +00:00
|
|
|
rdmsrl(HV_X64_MSR_SIMP, simp.AsUINT64);
|
|
|
|
rdmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
DPRINT_DBG(VMBUS, "Simp: %llx, Sifep: %llx",
|
|
|
|
simp.AsUINT64, siefp.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
/*
|
|
|
|
* Determine if we are running on xenlinux (ie x2v shim) or
|
|
|
|
* native linux
|
|
|
|
*/
|
2009-08-18 00:20:02 +00:00
|
|
|
rdmsrl(HV_X64_MSR_GUEST_OS_ID, guestID);
|
2009-09-01 03:23:33 +00:00
|
|
|
if (guestID == HV_LINUX_GUEST_ID) {
|
|
|
|
gHvContext.synICMessagePage[0] =
|
|
|
|
phys_to_virt(simp.BaseSimpGpa << PAGE_SHIFT);
|
|
|
|
gHvContext.synICEventPage[0] =
|
|
|
|
phys_to_virt(siefp.BaseSiefpGpa << PAGE_SHIFT);
|
|
|
|
} else {
|
2009-07-13 23:02:34 +00:00
|
|
|
DPRINT_ERR(VMBUS, "unknown guest id!!");
|
|
|
|
goto Cleanup;
|
|
|
|
}
|
2009-09-01 03:23:33 +00:00
|
|
|
DPRINT_DBG(VMBUS, "MAPPED: Simp: %p, Sifep: %p",
|
|
|
|
gHvContext.synICMessagePage[0],
|
|
|
|
gHvContext.synICEventPage[0]);
|
|
|
|
} else {
|
2009-07-29 22:40:18 +00:00
|
|
|
gHvContext.synICMessagePage[0] = osd_PageAlloc(1);
|
2009-09-01 03:23:33 +00:00
|
|
|
if (gHvContext.synICMessagePage[0] == NULL) {
|
|
|
|
DPRINT_ERR(VMBUS,
|
|
|
|
"unable to allocate SYNIC message page!!");
|
2009-07-13 23:02:34 +00:00
|
|
|
goto Cleanup;
|
|
|
|
}
|
|
|
|
|
2009-07-29 22:40:18 +00:00
|
|
|
gHvContext.synICEventPage[0] = osd_PageAlloc(1);
|
2009-09-01 03:23:33 +00:00
|
|
|
if (gHvContext.synICEventPage[0] == NULL) {
|
|
|
|
DPRINT_ERR(VMBUS,
|
|
|
|
"unable to allocate SYNIC event page!!");
|
2009-07-13 23:02:34 +00:00
|
|
|
goto Cleanup;
|
|
|
|
}
|
|
|
|
|
2009-07-27 20:47:24 +00:00
|
|
|
/* Setup the Synic's message page */
|
2009-08-18 00:20:02 +00:00
|
|
|
rdmsrl(HV_X64_MSR_SIMP, simp.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
simp.SimpEnabled = 1;
|
2009-09-01 03:23:33 +00:00
|
|
|
simp.BaseSimpGpa = virt_to_phys(gHvContext.synICMessagePage[0])
|
|
|
|
>> PAGE_SHIFT;
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
DPRINT_DBG(VMBUS, "HV_X64_MSR_SIMP msr set to: %llx",
|
|
|
|
simp.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-08-18 00:20:02 +00:00
|
|
|
wrmsrl(HV_X64_MSR_SIMP, simp.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-07-27 20:47:24 +00:00
|
|
|
/* Setup the Synic's event page */
|
2009-08-18 00:20:02 +00:00
|
|
|
rdmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
siefp.SiefpEnabled = 1;
|
2009-09-01 03:23:33 +00:00
|
|
|
siefp.BaseSiefpGpa = virt_to_phys(gHvContext.synICEventPage[0])
|
|
|
|
>> PAGE_SHIFT;
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
DPRINT_DBG(VMBUS, "HV_X64_MSR_SIEFP msr set to: %llx",
|
|
|
|
siefp.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-08-18 00:20:02 +00:00
|
|
|
wrmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
}
|
2009-09-01 03:23:33 +00:00
|
|
|
|
|
|
|
/* Setup the interception SINT. */
|
2009-08-18 00:20:02 +00:00
|
|
|
/* wrmsrl((HV_X64_MSR_SINT0 + HV_SYNIC_INTERCEPTION_SINT_INDEX), */
|
2009-09-01 03:23:33 +00:00
|
|
|
/* interceptionSint.AsUINT64); */
|
2009-07-27 20:47:24 +00:00
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
/* Setup the shared SINT. */
|
2009-08-18 00:20:02 +00:00
|
|
|
rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
|
|
|
|
sharedSint.AsUINT64 = 0;
|
2009-07-27 20:47:24 +00:00
|
|
|
sharedSint.Vector = irqVector; /* HV_SHARED_SINT_IDT_VECTOR + 0x20; */
|
|
|
|
sharedSint.Masked = false;
|
|
|
|
sharedSint.AutoEoi = true;
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
DPRINT_DBG(VMBUS, "HV_X64_MSR_SINT1 msr set to: %llx",
|
|
|
|
sharedSint.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-08-18 00:20:02 +00:00
|
|
|
wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-07-27 20:47:24 +00:00
|
|
|
/* Enable the global synic bit */
|
2009-08-18 00:20:02 +00:00
|
|
|
rdmsrl(HV_X64_MSR_SCONTROL, sctrl.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
sctrl.Enable = 1;
|
|
|
|
|
2009-08-18 00:20:02 +00:00
|
|
|
wrmsrl(HV_X64_MSR_SCONTROL, sctrl.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-07-15 19:46:44 +00:00
|
|
|
gHvContext.SynICInitialized = true;
|
2009-07-13 23:02:34 +00:00
|
|
|
|
|
|
|
DPRINT_EXIT(VMBUS);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
Cleanup:
|
|
|
|
ret = -1;
|
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
if (gHvContext.GuestId == HV_LINUX_GUEST_ID) {
|
2009-07-13 23:02:34 +00:00
|
|
|
if (gHvContext.synICEventPage[0])
|
2009-09-01 03:23:33 +00:00
|
|
|
osd_PageFree(gHvContext.synICEventPage[0], 1);
|
2009-07-13 23:02:34 +00:00
|
|
|
|
|
|
|
if (gHvContext.synICMessagePage[0])
|
2009-07-29 22:40:18 +00:00
|
|
|
osd_PageFree(gHvContext.synICMessagePage[0], 1);
|
2009-07-13 23:02:34 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
DPRINT_EXIT(VMBUS);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
/**
|
|
|
|
* HvSynicCleanup - Cleanup routine for HvSynicInit().
|
|
|
|
*/
|
2009-08-18 00:20:55 +00:00
|
|
|
void HvSynicCleanup(void)
|
2009-07-13 23:02:34 +00:00
|
|
|
{
|
2009-08-20 19:11:26 +00:00
|
|
|
union hv_synic_sint sharedSint;
|
|
|
|
union hv_synic_simp simp;
|
|
|
|
union hv_synic_siefp siefp;
|
2009-07-13 23:02:34 +00:00
|
|
|
|
|
|
|
DPRINT_ENTER(VMBUS);
|
|
|
|
|
2009-09-01 03:23:33 +00:00
|
|
|
if (!gHvContext.SynICInitialized) {
|
2009-07-13 23:02:34 +00:00
|
|
|
DPRINT_EXIT(VMBUS);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2009-08-18 00:20:02 +00:00
|
|
|
rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
|
|
|
|
sharedSint.Masked = 1;
|
|
|
|
|
2009-07-27 20:47:24 +00:00
|
|
|
/* Disable the interrupt */
|
2009-08-18 00:20:02 +00:00
|
|
|
wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-07-27 20:47:24 +00:00
|
|
|
/*
|
|
|
|
* Disable and free the resources only if we are running as
|
|
|
|
* native linux since in xenlinux, we are sharing the
|
|
|
|
* resources with the x2v shim
|
|
|
|
*/
|
2009-09-01 03:23:33 +00:00
|
|
|
if (gHvContext.GuestId == HV_LINUX_GUEST_ID) {
|
2009-08-18 00:20:02 +00:00
|
|
|
rdmsrl(HV_X64_MSR_SIMP, simp.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
simp.SimpEnabled = 0;
|
|
|
|
simp.BaseSimpGpa = 0;
|
|
|
|
|
2009-08-18 00:20:02 +00:00
|
|
|
wrmsrl(HV_X64_MSR_SIMP, simp.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-08-18 00:20:02 +00:00
|
|
|
rdmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
siefp.SiefpEnabled = 0;
|
|
|
|
siefp.BaseSiefpGpa = 0;
|
|
|
|
|
2009-08-18 00:20:02 +00:00
|
|
|
wrmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64);
|
2009-07-13 23:02:34 +00:00
|
|
|
|
2009-07-29 22:40:18 +00:00
|
|
|
osd_PageFree(gHvContext.synICMessagePage[0], 1);
|
|
|
|
osd_PageFree(gHvContext.synICEventPage[0], 1);
|
2009-07-13 23:02:34 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
DPRINT_EXIT(VMBUS);
|
|
|
|
}
|