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path: root/drivers/staging/hv/Hv.c
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Diffstat (limited to 'drivers/staging/hv/Hv.c')
-rw-r--r--drivers/staging/hv/Hv.c144
1 files changed, 69 insertions, 75 deletions
diff --git a/drivers/staging/hv/Hv.c b/drivers/staging/hv/Hv.c
index 3a833ad55d4..264a90f8f8e 100644
--- a/drivers/staging/hv/Hv.c
+++ b/drivers/staging/hv/Hv.c
@@ -25,11 +25,9 @@
#include "include/logging.h"
#include "VmbusPrivate.h"
-//
-// Globals
-//
+/* Globals */
-// The one and only
+/* The one and only */
HV_CONTEXT gHvContext={
.SynICInitialized = false,
.HypercallPage = NULL,
@@ -90,10 +88,11 @@ HvQueryHypervisorInfo (
unsigned int maxLeaf;
unsigned int op;
- //
- // Its assumed that this is called after confirming that Viridian is present.
- // Query id and revision.
- //
+ /*
+ * Its assumed that this is called after confirming that Viridian
+ * is present. Query id and revision.
+ */
+
eax = 0;
ebx = 0;
@@ -103,18 +102,18 @@ HvQueryHypervisorInfo (
do_cpuid(op, &eax, &ebx, &ecx, &edx);
DPRINT_INFO(VMBUS, "Vendor ID: %c%c%c%c%c%c%c%c%c%c%c%c",
- (ebx & 0xFF),
- ((ebx >> 8) & 0xFF),
- ((ebx >> 16) & 0xFF),
- ((ebx >> 24) & 0xFF),
- (ecx & 0xFF),
- ((ecx >> 8) & 0xFF),
- ((ecx >> 16) & 0xFF),
- ((ecx >> 24) & 0xFF),
- (edx & 0xFF),
- ((edx >> 8) & 0xFF),
- ((edx >> 16) & 0xFF),
- ((edx >> 24) & 0xFF));
+ (ebx & 0xFF),
+ ((ebx >> 8) & 0xFF),
+ ((ebx >> 16) & 0xFF),
+ ((ebx >> 24) & 0xFF),
+ (ecx & 0xFF),
+ ((ecx >> 8) & 0xFF),
+ ((ecx >> 16) & 0xFF),
+ ((ecx >> 24) & 0xFF),
+ (edx & 0xFF),
+ ((edx >> 8) & 0xFF),
+ ((edx >> 16) & 0xFF),
+ ((edx >> 24) & 0xFF));
maxLeaf = eax;
eax = 0;
@@ -125,25 +124,25 @@ HvQueryHypervisorInfo (
do_cpuid(op, &eax, &ebx, &ecx, &edx);
DPRINT_INFO(VMBUS, "Interface ID: %c%c%c%c",
- (eax & 0xFF),
- ((eax >> 8) & 0xFF),
- ((eax >> 16) & 0xFF),
- ((eax >> 24) & 0xFF));
+ (eax & 0xFF),
+ ((eax >> 8) & 0xFF),
+ ((eax >> 16) & 0xFF),
+ ((eax >> 24) & 0xFF));
if (maxLeaf >= HvCpuIdFunctionMsHvVersion) {
- eax = 0;
- ebx = 0;
- ecx = 0;
- edx = 0;
- op = HvCpuIdFunctionMsHvVersion;
- do_cpuid(op, &eax, &ebx, &ecx, &edx);
- DPRINT_INFO(VMBUS, "OS Build:%d-%d.%d-%d-%d.%d",
- eax,
- ebx >> 16,
- ebx & 0xFFFF,
- ecx,
- edx >> 24,
- edx & 0xFFFFFF);
+ eax = 0;
+ ebx = 0;
+ ecx = 0;
+ edx = 0;
+ op = HvCpuIdFunctionMsHvVersion;
+ do_cpuid(op, &eax, &ebx, &ecx, &edx);
+ DPRINT_INFO(VMBUS, "OS Build:%d-%d.%d-%d-%d.%d",
+ eax,
+ ebx >> 16,
+ ebx & 0xFFFF,
+ ecx,
+ edx >> 24,
+ edx & 0xFFFFFF);
}
return maxLeaf;
}
@@ -211,7 +210,7 @@ HvDoHypercall (
DPRINT_DBG(VMBUS, "Hypercall <return %llx>", hvStatusLo | ((u64)hvStatusHi << 32));
return (hvStatusLo | ((u64)hvStatusHi << 32));
-#endif // x86_64
+#endif /* x86_64 */
}
/*++
@@ -249,26 +248,26 @@ HvInit (
DPRINT_INFO(VMBUS, "Windows hypervisor detected! Retrieving more info...");
maxLeaf = HvQueryHypervisorInfo();
- //HvQueryHypervisorFeatures(maxLeaf);
+ /* HvQueryHypervisorFeatures(maxLeaf); */
- // Determine if we are running on xenlinux (ie x2v shim) or native linux
+ /* Determine if we are running on xenlinux (ie x2v shim) or native linux */
gHvContext.GuestId = ReadMsr(HV_X64_MSR_GUEST_OS_ID);
if (gHvContext.GuestId == 0)
{
- // Write our OS info
+ /* Write our OS info */
WriteMsr(HV_X64_MSR_GUEST_OS_ID, HV_LINUX_GUEST_ID);
gHvContext.GuestId = HV_LINUX_GUEST_ID;
}
- // See if the hypercall page is already set
+ /* See if the hypercall page is already set */
hypercallMsr.AsUINT64 = ReadMsr(HV_X64_MSR_HYPERCALL);
if (gHvContext.GuestId == HV_LINUX_GUEST_ID)
{
- // Allocate the hypercall page memory
- //virtAddr = PageAlloc(1);
+ /* Allocate the hypercall page memory */
+ /* virtAddr = PageAlloc(1); */
virtAddr = VirtualAllocExec(PAGE_SIZE);
if (!virtAddr)
@@ -278,11 +277,11 @@ HvInit (
}
hypercallMsr.Enable = 1;
- //hypercallMsr.GuestPhysicalAddress = Logical2PhysicalAddr(virtAddr) >> PAGE_SHIFT;
+ /* hypercallMsr.GuestPhysicalAddress = Logical2PhysicalAddr(virtAddr) >> PAGE_SHIFT; */
hypercallMsr.GuestPhysicalAddress = Virtual2Physical(virtAddr) >> PAGE_SHIFT;
WriteMsr(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64);
- // Confirm that hypercall page did get setup.
+ /* Confirm that hypercall page did get setup. */
hypercallMsr.AsUINT64 = 0;
hypercallMsr.AsUINT64 = ReadMsr(HV_X64_MSR_HYPERCALL);
@@ -304,7 +303,7 @@ HvInit (
gHvContext.HypercallPage,
(u64)hypercallMsr.GuestPhysicalAddress << PAGE_SHIFT);
- // Setup the global signal event param for the signal event hypercall
+ /* Setup the global signal event param for the signal event hypercall */
gHvContext.SignalEventBuffer = kmalloc(sizeof(HV_INPUT_SIGNAL_EVENT_BUFFER), GFP_KERNEL);
if (!gHvContext.SignalEventBuffer)
{
@@ -317,7 +316,7 @@ HvInit (
gHvContext.SignalEventParam->FlagNumber = 0;
gHvContext.SignalEventParam->RsvdZ = 0;
- //DPRINT_DBG(VMBUS, "My id %llu", HvGetCurrentPartitionId());
+ /* DPRINT_DBG(VMBUS, "My id %llu", HvGetCurrentPartitionId()); */
DPRINT_EXIT(VMBUS);
@@ -490,12 +489,12 @@ HvSynicInit (
return ret;
}
- // Check the version
+ /* Check the version */
version = ReadMsr(HV_X64_MSR_SVERSION);
DPRINT_INFO(VMBUS, "SynIC version: %llx", version);
- // TODO: Handle SMP
+ /* TODO: Handle SMP */
if (gHvContext.GuestId == HV_XENLINUX_GUEST_ID)
{
DPRINT_INFO(VMBUS, "Skipping SIMP and SIEFP setup since it is already set.");
@@ -505,7 +504,7 @@ HvSynicInit (
DPRINT_DBG(VMBUS, "Simp: %llx, Sifep: %llx", simp.AsUINT64, siefp.AsUINT64);
- // Determine if we are running on xenlinux (ie x2v shim) or native linux
+ /* Determine if we are running on xenlinux (ie x2v shim) or native linux */
guestID = ReadMsr(HV_X64_MSR_GUEST_OS_ID);
if (guestID == HV_LINUX_GUEST_ID)
@@ -536,9 +535,7 @@ HvSynicInit (
goto Cleanup;
}
- //
- // Setup the Synic's message page
- //
+ /* Setup the Synic's message page */
simp.AsUINT64 = ReadMsr(HV_X64_MSR_SIMP);
simp.SimpEnabled = 1;
simp.BaseSimpGpa = GetPhysicalAddress(gHvContext.synICMessagePage[0]) >> PAGE_SHIFT;
@@ -547,9 +544,7 @@ HvSynicInit (
WriteMsr(HV_X64_MSR_SIMP, simp.AsUINT64);
- //
- // Setup the Synic's event page
- //
+ /* Setup the Synic's event page */
siefp.AsUINT64 = ReadMsr(HV_X64_MSR_SIEFP);
siefp.SiefpEnabled = 1;
siefp.BaseSiefpGpa = GetPhysicalAddress(gHvContext.synICEventPage[0]) >> PAGE_SHIFT;
@@ -558,31 +553,27 @@ HvSynicInit (
WriteMsr(HV_X64_MSR_SIEFP, siefp.AsUINT64);
}
- //
- // Setup the interception SINT.
- //
- //WriteMsr((HV_X64_MSR_SINT0 + HV_SYNIC_INTERCEPTION_SINT_INDEX),
- // interceptionSint.AsUINT64);
-
- //
- // Setup the shared SINT.
- //
+ /* Setup the interception SINT. */
+ /* WriteMsr((HV_X64_MSR_SINT0 + HV_SYNIC_INTERCEPTION_SINT_INDEX), */
+ /* interceptionSint.AsUINT64); */
+
+ /* Setup the shared SINT. */
sharedSint.AsUINT64 = ReadMsr(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT);
sharedSint.AsUINT64 = 0;
- sharedSint.Vector = irqVector; //HV_SHARED_SINT_IDT_VECTOR + 0x20;
- sharedSint.Masked = false;
- sharedSint.AutoEoi = true;
+ sharedSint.Vector = irqVector; /* HV_SHARED_SINT_IDT_VECTOR + 0x20; */
+ sharedSint.Masked = false;
+ sharedSint.AutoEoi = true;
DPRINT_DBG(VMBUS, "HV_X64_MSR_SINT1 msr set to: %llx", sharedSint.AsUINT64);
WriteMsr(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64);
- // Enable the global synic bit
+ /* Enable the global synic bit */
sctrl.AsUINT64 = ReadMsr(HV_X64_MSR_SCONTROL);
sctrl.Enable = 1;
- WriteMsr(HV_X64_MSR_SCONTROL, sctrl.AsUINT64);
+ WriteMsr(HV_X64_MSR_SCONTROL, sctrl.AsUINT64);
gHvContext.SynICInitialized = true;
@@ -642,11 +633,14 @@ HvSynicCleanup(
sharedSint.Masked = 1;
- // Disable the interrupt
+ /* Disable the interrupt */
WriteMsr(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64);
- // 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
+ /*
+ * 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
+ */
if (gHvContext.GuestId == HV_LINUX_GUEST_ID)
{
simp.AsUINT64 = ReadMsr(HV_X64_MSR_SIMP);
@@ -669,4 +663,4 @@ HvSynicCleanup(
}
-// eof
+/* eof */
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-04 07:39:01 +0000