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Diffstat (limited to 'drivers/staging/hv/hv.c')
-rw-r--r--drivers/staging/hv/hv.c95
1 files changed, 50 insertions, 45 deletions
diff --git a/drivers/staging/hv/hv.c b/drivers/staging/hv/hv.c
index ab033277226..d0e8c85afb8 100644
--- a/drivers/staging/hv/hv.c
+++ b/drivers/staging/hv/hv.c
@@ -28,11 +28,11 @@
#include "vmbus_private.h"
/* The one and only */
-struct hv_context gHvContext = {
- .SynICInitialized = false,
- .HypercallPage = NULL,
- .SignalEventParam = NULL,
- .SignalEventBuffer = NULL,
+struct hv_context hv_context = {
+ .synic_initialized = false,
+ .hypercall_page = NULL,
+ .signal_event_param = NULL,
+ .signal_event_buffer = NULL,
};
/*
@@ -134,7 +134,7 @@ static u64 HvDoHypercall(u64 Control, void *Input, void *Output)
u64 hvStatus = 0;
u64 inputAddress = (Input) ? virt_to_phys(Input) : 0;
u64 outputAddress = (Output) ? virt_to_phys(Output) : 0;
- volatile void *hypercallPage = gHvContext.HypercallPage;
+ volatile void *hypercallPage = hv_context.hypercall_page;
DPRINT_DBG(VMBUS, "Hypercall <control %llx input phys %llx virt %p "
"output phys %llx virt %p hypercall %p>",
@@ -162,7 +162,7 @@ static u64 HvDoHypercall(u64 Control, void *Input, void *Output)
u64 outputAddress = (Output) ? virt_to_phys(Output) : 0;
u32 outputAddressHi = outputAddress >> 32;
u32 outputAddressLo = outputAddress & 0xFFFFFFFF;
- volatile void *hypercallPage = gHvContext.HypercallPage;
+ volatile void *hypercallPage = hv_context.hypercall_page;
DPRINT_DBG(VMBUS, "Hypercall <control %llx input %p output %p>",
Control, Input, Output);
@@ -192,8 +192,9 @@ int HvInit(void)
union hv_x64_msr_hypercall_contents hypercallMsr;
void *virtAddr = NULL;
- memset(gHvContext.synICEventPage, 0, sizeof(void *) * MAX_NUM_CPUS);
- memset(gHvContext.synICMessagePage, 0, sizeof(void *) * MAX_NUM_CPUS);
+ memset(hv_context.synic_event_page, 0, sizeof(void *) * MAX_NUM_CPUS);
+ memset(hv_context.synic_message_page, 0,
+ sizeof(void *) * MAX_NUM_CPUS);
if (!HvQueryHypervisorPresence()) {
DPRINT_ERR(VMBUS, "No Windows hypervisor detected!!");
@@ -209,17 +210,17 @@ int HvInit(void)
/*
* We only support running on top of Hyper-V
*/
- rdmsrl(HV_X64_MSR_GUEST_OS_ID, gHvContext.GuestId);
+ rdmsrl(HV_X64_MSR_GUEST_OS_ID, hv_context.guestid);
- if (gHvContext.GuestId != 0) {
+ if (hv_context.guestid != 0) {
DPRINT_ERR(VMBUS, "Unknown guest id (0x%llx)!!",
- gHvContext.GuestId);
+ hv_context.guestid);
goto Cleanup;
}
/* Write our OS info */
wrmsrl(HV_X64_MSR_GUEST_OS_ID, HV_LINUX_GUEST_ID);
- gHvContext.GuestId = HV_LINUX_GUEST_ID;
+ hv_context.guestid = HV_LINUX_GUEST_ID;
/* See if the hypercall page is already set */
rdmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.as_uint64);
@@ -250,28 +251,29 @@ int HvInit(void)
goto Cleanup;
}
- gHvContext.HypercallPage = virtAddr;
+ hv_context.hypercall_page = virtAddr;
DPRINT_INFO(VMBUS, "Hypercall page VA=%p, PA=0x%0llx",
- gHvContext.HypercallPage,
+ hv_context.hypercall_page,
(u64)hypercallMsr.guest_physical_address << PAGE_SHIFT);
/* Setup the global signal event param for the signal event hypercall */
- gHvContext.SignalEventBuffer =
+ hv_context.signal_event_buffer =
kmalloc(sizeof(struct hv_input_signal_event_buffer),
GFP_KERNEL);
- if (!gHvContext.SignalEventBuffer)
+ if (!hv_context.signal_event_buffer)
goto Cleanup;
- gHvContext.SignalEventParam =
+ hv_context.signal_event_param =
(struct hv_input_signal_event *)
- (ALIGN_UP((unsigned long)gHvContext.SignalEventBuffer,
+ (ALIGN_UP((unsigned long)
+ hv_context.signal_event_buffer,
HV_HYPERCALL_PARAM_ALIGN));
- gHvContext.SignalEventParam->connectionid.asu32 = 0;
- gHvContext.SignalEventParam->connectionid.u.id =
+ hv_context.signal_event_param->connectionid.asu32 = 0;
+ hv_context.signal_event_param->connectionid.u.id =
VMBUS_EVENT_CONNECTION_ID;
- gHvContext.SignalEventParam->flag_number = 0;
- gHvContext.SignalEventParam->rsvdz = 0;
+ hv_context.signal_event_param->flag_number = 0;
+ hv_context.signal_event_param->rsvdz = 0;
return ret;
@@ -297,15 +299,15 @@ void HvCleanup(void)
{
union hv_x64_msr_hypercall_contents hypercallMsr;
- kfree(gHvContext.SignalEventBuffer);
- gHvContext.SignalEventBuffer = NULL;
- gHvContext.SignalEventParam = NULL;
+ kfree(hv_context.signal_event_buffer);
+ hv_context.signal_event_buffer = NULL;
+ hv_context.signal_event_param = NULL;
- if (gHvContext.HypercallPage) {
+ if (hv_context.hypercall_page) {
hypercallMsr.as_uint64 = 0;
wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.as_uint64);
- vfree(gHvContext.HypercallPage);
- gHvContext.HypercallPage = NULL;
+ vfree(hv_context.hypercall_page);
+ hv_context.hypercall_page = NULL;
}
}
@@ -359,7 +361,8 @@ u16 HvSignalEvent(void)
{
u16 status;
- status = HvDoHypercall(HVCALL_SIGNAL_EVENT, gHvContext.SignalEventParam,
+ status = HvDoHypercall(HVCALL_SIGNAL_EVENT,
+ hv_context.signal_event_param,
NULL) & 0xFFFF;
return status;
}
@@ -382,7 +385,7 @@ void HvSynicInit(void *irqarg)
u32 irqVector = *((u32 *)(irqarg));
int cpu = smp_processor_id();
- if (!gHvContext.HypercallPage)
+ if (!hv_context.hypercall_page)
return;
/* Check the version */
@@ -390,17 +393,19 @@ void HvSynicInit(void *irqarg)
DPRINT_INFO(VMBUS, "SynIC version: %llx", version);
- gHvContext.synICMessagePage[cpu] = (void *)get_zeroed_page(GFP_ATOMIC);
+ hv_context.synic_message_page[cpu] =
+ (void *)get_zeroed_page(GFP_ATOMIC);
- if (gHvContext.synICMessagePage[cpu] == NULL) {
+ if (hv_context.synic_message_page[cpu] == NULL) {
DPRINT_ERR(VMBUS,
"unable to allocate SYNIC message page!!");
goto Cleanup;
}
- gHvContext.synICEventPage[cpu] = (void *)get_zeroed_page(GFP_ATOMIC);
+ hv_context.synic_event_page[cpu] =
+ (void *)get_zeroed_page(GFP_ATOMIC);
- if (gHvContext.synICEventPage[cpu] == NULL) {
+ if (hv_context.synic_event_page[cpu] == NULL) {
DPRINT_ERR(VMBUS,
"unable to allocate SYNIC event page!!");
goto Cleanup;
@@ -409,7 +414,7 @@ void HvSynicInit(void *irqarg)
/* Setup the Synic's message page */
rdmsrl(HV_X64_MSR_SIMP, simp.as_uint64);
simp.simp_enabled = 1;
- simp.base_simp_gpa = virt_to_phys(gHvContext.synICMessagePage[cpu])
+ simp.base_simp_gpa = virt_to_phys(hv_context.synic_message_page[cpu])
>> PAGE_SHIFT;
DPRINT_DBG(VMBUS, "HV_X64_MSR_SIMP msr set to: %llx", simp.as_uint64);
@@ -419,7 +424,7 @@ void HvSynicInit(void *irqarg)
/* Setup the Synic's event page */
rdmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64);
siefp.siefp_enabled = 1;
- siefp.base_siefp_gpa = virt_to_phys(gHvContext.synICEventPage[cpu])
+ siefp.base_siefp_gpa = virt_to_phys(hv_context.synic_event_page[cpu])
>> PAGE_SHIFT;
DPRINT_DBG(VMBUS, "HV_X64_MSR_SIEFP msr set to: %llx", siefp.as_uint64);
@@ -449,15 +454,15 @@ void HvSynicInit(void *irqarg)
wrmsrl(HV_X64_MSR_SCONTROL, sctrl.as_uint64);
- gHvContext.SynICInitialized = true;
+ hv_context.synic_initialized = true;
return;
Cleanup:
- if (gHvContext.synICEventPage[cpu])
- osd_PageFree(gHvContext.synICEventPage[cpu], 1);
+ if (hv_context.synic_event_page[cpu])
+ osd_PageFree(hv_context.synic_event_page[cpu], 1);
- if (gHvContext.synICMessagePage[cpu])
- osd_PageFree(gHvContext.synICMessagePage[cpu], 1);
+ if (hv_context.synic_message_page[cpu])
+ osd_PageFree(hv_context.synic_message_page[cpu], 1);
return;
}
@@ -471,7 +476,7 @@ void HvSynicCleanup(void *arg)
union hv_synic_siefp siefp;
int cpu = smp_processor_id();
- if (!gHvContext.SynICInitialized)
+ if (!hv_context.synic_initialized)
return;
rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.as_uint64);
@@ -494,6 +499,6 @@ void HvSynicCleanup(void *arg)
wrmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64);
- osd_PageFree(gHvContext.synICMessagePage[cpu], 1);
- osd_PageFree(gHvContext.synICEventPage[cpu], 1);
+ osd_PageFree(hv_context.synic_message_page[cpu], 1);
+ osd_PageFree(hv_context.synic_event_page[cpu], 1);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-10-22 08:42:46 +0000