#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,
};
/*
- * HvQueryHypervisorPresence - Query the cpuid for presense of windows hypervisor
+ * query_hypervisor_presence
+ * - Query the cpuid for presense of windows hypervisor
*/
-static int HvQueryHypervisorPresence(void)
+static int query_hypervisor_presence(void)
{
unsigned int eax;
unsigned int ebx;
}
/*
- * HvQueryHypervisorInfo - Get version info of the windows hypervisor
+ * query_hypervisor_info - Get version info of the windows hypervisor
*/
-static int HvQueryHypervisorInfo(void)
+static int query_hypervisor_info(void)
{
unsigned int eax;
unsigned int ebx;
unsigned int ecx;
unsigned int edx;
- unsigned int maxLeaf;
+ unsigned int max_leaf;
unsigned int op;
/*
((edx >> 16) & 0xFF),
((edx >> 24) & 0xFF));
- maxLeaf = eax;
+ max_leaf = eax;
eax = 0;
ebx = 0;
ecx = 0;
((eax >> 16) & 0xFF),
((eax >> 24) & 0xFF));
- if (maxLeaf >= HVCPUID_VERSION) {
+ if (max_leaf >= HVCPUID_VERSION) {
eax = 0;
ebx = 0;
ecx = 0;
edx >> 24,
edx & 0xFFFFFF);
}
- return maxLeaf;
+ return max_leaf;
}
/*
- * HvDoHypercall - Invoke the specified hypercall
+ * do_hypercall- Invoke the specified hypercall
*/
-static u64 HvDoHypercall(u64 Control, void *Input, void *Output)
+static u64 do_hypercall(u64 control, void *input, void *output)
{
#ifdef CONFIG_X86_64
- u64 hvStatus = 0;
- u64 inputAddress = (Input) ? virt_to_phys(Input) : 0;
- u64 outputAddress = (Output) ? virt_to_phys(Output) : 0;
- volatile void *hypercallPage = gHvContext.HypercallPage;
+ u64 hv_status = 0;
+ u64 input_address = (input) ? virt_to_phys(input) : 0;
+ u64 output_address = (output) ? virt_to_phys(output) : 0;
+ volatile void *hypercall_page = hv_context.hypercall_page;
DPRINT_DBG(VMBUS, "Hypercall <control %llx input phys %llx virt %p "
"output phys %llx virt %p hypercall %p>",
- Control, inputAddress, Input,
- outputAddress, Output, hypercallPage);
+ control, input_address, input,
+ output_address, output, hypercall_page);
- __asm__ __volatile__("mov %0, %%r8" : : "r" (outputAddress) : "r8");
- __asm__ __volatile__("call *%3" : "=a" (hvStatus) :
- "c" (Control), "d" (inputAddress),
- "m" (hypercallPage));
+ __asm__ __volatile__("mov %0, %%r8" : : "r" (output_address) : "r8");
+ __asm__ __volatile__("call *%3" : "=a" (hv_status) :
+ "c" (control), "d" (input_address),
+ "m" (hypercall_page));
- DPRINT_DBG(VMBUS, "Hypercall <return %llx>", hvStatus);
+ DPRINT_DBG(VMBUS, "Hypercall <return %llx>", hv_status);
- return hvStatus;
+ return hv_status;
#else
- u32 controlHi = Control >> 32;
- u32 controlLo = Control & 0xFFFFFFFF;
- u32 hvStatusHi = 1;
- u32 hvStatusLo = 1;
- u64 inputAddress = (Input) ? virt_to_phys(Input) : 0;
- u32 inputAddressHi = inputAddress >> 32;
- u32 inputAddressLo = inputAddress & 0xFFFFFFFF;
- u64 outputAddress = (Output) ? virt_to_phys(Output) : 0;
- u32 outputAddressHi = outputAddress >> 32;
- u32 outputAddressLo = outputAddress & 0xFFFFFFFF;
- volatile void *hypercallPage = gHvContext.HypercallPage;
+ u32 control_hi = control >> 32;
+ u32 control_lo = control & 0xFFFFFFFF;
+ u32 hv_status_hi = 1;
+ u32 hv_status_lo = 1;
+ u64 input_address = (input) ? virt_to_phys(input) : 0;
+ u32 input_address_hi = input_address >> 32;
+ u32 input_address_lo = input_address & 0xFFFFFFFF;
+ u64 output_address = (output) ? virt_to_phys(output) : 0;
+ u32 output_address_hi = output_address >> 32;
+ u32 output_address_lo = output_address & 0xFFFFFFFF;
+ volatile void *hypercall_page = hv_context.hypercall_page;
DPRINT_DBG(VMBUS, "Hypercall <control %llx input %p output %p>",
- Control, Input, Output);
+ control, input, output);
- __asm__ __volatile__ ("call *%8" : "=d"(hvStatusHi),
- "=a"(hvStatusLo) : "d" (controlHi),
- "a" (controlLo), "b" (inputAddressHi),
- "c" (inputAddressLo), "D"(outputAddressHi),
- "S"(outputAddressLo), "m" (hypercallPage));
+ __asm__ __volatile__ ("call *%8" : "=d"(hv_status_hi),
+ "=a"(hv_status_lo) : "d" (control_hi),
+ "a" (control_lo), "b" (input_address_hi),
+ "c" (input_address_lo), "D"(output_address_hi),
+ "S"(output_address_lo), "m" (hypercall_page));
DPRINT_DBG(VMBUS, "Hypercall <return %llx>",
- hvStatusLo | ((u64)hvStatusHi << 32));
+ hv_status_lo | ((u64)hv_status_hi << 32));
- return hvStatusLo | ((u64)hvStatusHi << 32);
+ return hv_status_lo | ((u64)hv_status_hi << 32);
#endif /* !x86_64 */
}
/*
- * HvInit - Main initialization routine.
+ * hv_init - Main initialization routine.
*
* This routine must be called before any other routines in here are called
*/
-int HvInit(void)
+int hv_init(void)
{
int ret = 0;
- int maxLeaf;
- union hv_x64_msr_hypercall_contents hypercallMsr;
- void *virtAddr = NULL;
+ int max_leaf;
+ union hv_x64_msr_hypercall_contents hypercall_msr;
+ 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()) {
+ if (!query_hypervisor_presence()) {
DPRINT_ERR(VMBUS, "No Windows hypervisor detected!!");
goto Cleanup;
}
DPRINT_INFO(VMBUS,
"Windows hypervisor detected! Retrieving more info...");
- maxLeaf = HvQueryHypervisorInfo();
+ max_leaf = query_hypervisor_info();
/* HvQueryHypervisorFeatures(maxLeaf); */
/*
* 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);
+ rdmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
/*
* Allocate the hypercall page memory
- * virtAddr = osd_PageAlloc(1);
+ * virtaddr = osd_page_alloc(1);
*/
- virtAddr = osd_VirtualAllocExec(PAGE_SIZE);
+ virtaddr = osd_virtual_alloc_exec(PAGE_SIZE);
- if (!virtAddr) {
+ if (!virtaddr) {
DPRINT_ERR(VMBUS,
"unable to allocate hypercall page!!");
goto Cleanup;
}
- hypercallMsr.enable = 1;
+ hypercall_msr.enable = 1;
- hypercallMsr.guest_physical_address = vmalloc_to_pfn(virtAddr);
- wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.as_uint64);
+ hypercall_msr.guest_physical_address = vmalloc_to_pfn(virtaddr);
+ wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
/* Confirm that hypercall page did get setup. */
- hypercallMsr.as_uint64 = 0;
- rdmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.as_uint64);
+ hypercall_msr.as_uint64 = 0;
+ rdmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
- if (!hypercallMsr.enable) {
+ if (!hypercall_msr.enable) {
DPRINT_ERR(VMBUS, "unable to set hypercall page!!");
goto Cleanup;
}
- gHvContext.HypercallPage = virtAddr;
+ hv_context.hypercall_page = virtaddr;
DPRINT_INFO(VMBUS, "Hypercall page VA=%p, PA=0x%0llx",
- gHvContext.HypercallPage,
- (u64)hypercallMsr.guest_physical_address << PAGE_SHIFT);
+ hv_context.hypercall_page,
+ (u64)hypercall_msr.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;
Cleanup:
- if (virtAddr) {
- if (hypercallMsr.enable) {
- hypercallMsr.as_uint64 = 0;
- wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.as_uint64);
+ if (virtaddr) {
+ if (hypercall_msr.enable) {
+ hypercall_msr.as_uint64 = 0;
+ wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
}
- vfree(virtAddr);
+ vfree(virtaddr);
}
ret = -1;
return ret;
}
/*
- * HvCleanup - Cleanup routine.
+ * hv_cleanup - Cleanup routine.
*
* This routine is called normally during driver unloading or exiting.
*/
-void HvCleanup(void)
+void hv_cleanup(void)
{
- union hv_x64_msr_hypercall_contents hypercallMsr;
+ union hv_x64_msr_hypercall_contents hypercall_msr;
- 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) {
- hypercallMsr.as_uint64 = 0;
- wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.as_uint64);
- vfree(gHvContext.HypercallPage);
- gHvContext.HypercallPage = NULL;
+ if (hv_context.hypercall_page) {
+ hypercall_msr.as_uint64 = 0;
+ wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
+ vfree(hv_context.hypercall_page);
+ hv_context.hypercall_page = NULL;
}
}
/*
- * HvPostMessage - Post a message using the hypervisor message IPC.
+ * hv_post_message - Post a message using the hypervisor message IPC.
*
* This involves a hypercall.
*/
-u16 HvPostMessage(union hv_connection_id connectionId,
- enum hv_message_type messageType,
- void *payload, size_t payloadSize)
+u16 hv_post_message(union hv_connection_id connection_id,
+ enum hv_message_type message_type,
+ void *payload, size_t payload_size)
{
- struct alignedInput {
+ struct aligned_input {
u64 alignment8;
struct hv_input_post_message msg;
};
- struct hv_input_post_message *alignedMsg;
+ struct hv_input_post_message *aligned_msg;
u16 status;
unsigned long addr;
- if (payloadSize > HV_MESSAGE_PAYLOAD_BYTE_COUNT)
+ if (payload_size > HV_MESSAGE_PAYLOAD_BYTE_COUNT)
return -1;
- addr = (unsigned long)kmalloc(sizeof(struct alignedInput), GFP_ATOMIC);
+ addr = (unsigned long)kmalloc(sizeof(struct aligned_input), GFP_ATOMIC);
if (!addr)
return -1;
- alignedMsg = (struct hv_input_post_message *)
+ aligned_msg = (struct hv_input_post_message *)
(ALIGN_UP(addr, HV_HYPERCALL_PARAM_ALIGN));
- alignedMsg->connectionid = connectionId;
- alignedMsg->message_type = messageType;
- alignedMsg->payload_size = payloadSize;
- memcpy((void *)alignedMsg->payload, payload, payloadSize);
+ 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);
- status = HvDoHypercall(HVCALL_POST_MESSAGE, alignedMsg, NULL) & 0xFFFF;
+ status = do_hypercall(HVCALL_POST_MESSAGE, aligned_msg, NULL)
+ & 0xFFFF;
kfree((void *)addr);
/*
- * HvSignalEvent - Signal an event on the specified connection using the hypervisor event IPC.
+ * hv_signal_event -
+ * Signal an event on the specified connection using the hypervisor event IPC.
*
* This involves a hypercall.
*/
-u16 HvSignalEvent(void)
+u16 hv_signal_event(void)
{
u16 status;
- status = HvDoHypercall(HVCALL_SIGNAL_EVENT, gHvContext.SignalEventParam,
+ status = do_hypercall(HVCALL_SIGNAL_EVENT,
+ hv_context.signal_event_param,
NULL) & 0xFFFF;
return status;
}
/*
- * HvSynicInit - Initialize the Synthethic Interrupt Controller.
+ * hv_synic_init - 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.
*/
-void HvSynicInit(void *irqarg)
+void hv_synic_init(void *irqarg)
{
u64 version;
union hv_synic_simp simp;
union hv_synic_siefp siefp;
- union hv_synic_sint sharedSint;
+ union hv_synic_sint shared_sint;
union hv_synic_scontrol sctrl;
- u32 irqVector = *((u32 *)(irqarg));
+ u32 irq_vector = *((u32 *)(irqarg));
int cpu = smp_processor_id();
- if (!gHvContext.HypercallPage)
+ if (!hv_context.hypercall_page)
return;
/* Check the version */
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;
/* 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);
/* 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);
/* interceptionSint.as_uint64); */
/* Setup the shared SINT. */
- rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.as_uint64);
+ rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);
- sharedSint.as_uint64 = 0;
- sharedSint.vector = irqVector; /* HV_SHARED_SINT_IDT_VECTOR + 0x20; */
- sharedSint.masked = false;
- sharedSint.auto_eoi = true;
+ 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;
DPRINT_DBG(VMBUS, "HV_X64_MSR_SINT1 msr set to: %llx",
- sharedSint.as_uint64);
+ shared_sint.as_uint64);
- wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.as_uint64);
+ wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);
/* Enable the global synic bit */
rdmsrl(HV_X64_MSR_SCONTROL, sctrl.as_uint64);
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_page_free(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_page_free(hv_context.synic_message_page[cpu], 1);
return;
}
/*
- * HvSynicCleanup - Cleanup routine for HvSynicInit().
+ * hv_synic_cleanup - Cleanup routine for hv_synic_init().
*/
-void HvSynicCleanup(void *arg)
+void hv_synic_cleanup(void *arg)
{
- union hv_synic_sint sharedSint;
+ union hv_synic_sint shared_sint;
union hv_synic_simp simp;
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);
+ rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);
- sharedSint.masked = 1;
+ shared_sint.masked = 1;
/* Need to correctly cleanup in the case of SMP!!! */
/* Disable the interrupt */
- wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.as_uint64);
+ wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);
rdmsrl(HV_X64_MSR_SIMP, simp.as_uint64);
simp.simp_enabled = 0;
wrmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64);
- osd_PageFree(gHvContext.synICMessagePage[cpu], 1);
- osd_PageFree(gHvContext.synICEventPage[cpu], 1);
+ osd_page_free(hv_context.synic_message_page[cpu], 1);
+ osd_page_free(hv_context.synic_event_page[cpu], 1);
}