Initial import of qemu-2.4.1HEADmaster

1 files changed, 75 insertions, 0 deletions

diff --git a/roms/ipxe/src/arch/x86/drivers/xen/hvm.h b/roms/ipxe/src/arch/x86/drivers/xen/hvm.h
new file mode 100644
index 00000000..325d20d6
--- /dev/null
+++ b/roms/ipxe/src/arch/x86/drivers/xen/hvm.h
@@ -0,0 +1,75 @@
+#ifndef _HVM_H
+#define _HVM_H
+
+/** @file
+ *
+ * Xen HVM driver
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <ipxe/xen.h>
+#include <xen/hvm/hvm_op.h>
+#include <xen/hvm/params.h>
+
+/** Minimum CPUID base */
+#define HVM_CPUID_MIN 0x40000000UL
+
+/** Maximum CPUID base */
+#define HVM_CPUID_MAX 0x4000ff00UL
+
+/** Increment between CPUID bases */
+#define HVM_CPUID_STEP 0x00000100UL
+
+/** Magic signature */
+#define HVM_CPUID_MAGIC "XenVMMXenVMM"
+
+/** Get Xen version */
+#define HVM_CPUID_VERSION 1
+
+/** Get number of hypercall pages */
+#define HVM_CPUID_PAGES 2
+
+/** PCI MMIO BAR */
+#define HVM_MMIO_BAR PCI_BASE_ADDRESS_1
+
+/** A Xen HVM device */
+struct hvm_device {
+	/** Xen hypervisor */
+	struct xen_hypervisor xen;
+	/** CPUID base */
+	uint32_t cpuid_base;
+	/** Length of hypercall table */
+	size_t hypercall_len;
+	/** MMIO base address */
+	unsigned long mmio;
+	/** Current offset within MMIO address space */
+	size_t mmio_offset;
+	/** Length of MMIO address space */
+	size_t mmio_len;
+};
+
+/**
+ * Get HVM parameter value
+ *
+ * @v xen		Xen hypervisor
+ * @v index		Parameter index
+ * @v value		Value to fill in
+ * @ret xenrc		Xen status code
+ */
+static inline int xen_hvm_get_param ( struct xen_hypervisor *xen,
+				      unsigned int index, uint64_t *value ) {
+	struct xen_hvm_param param;
+	int xenrc;
+
+	param.domid = DOMID_SELF;
+	param.index = index;
+	xenrc = xen_hypercall_2 ( xen, __HYPERVISOR_hvm_op, HVMOP_get_param,
+				  virt_to_phys ( &param ) );
+	*value = param.value;
+	return xenrc;
+}
+
+#endif /* _HVM_H */