Add a new file xen/include/xen/hvm/irq.h to share common definitions.

Signed-off-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: Dexuan Cui <dexuan.cui@intel.com>

1 files changed, 98 insertions, 0 deletions

diff --git a/xen/include/xen/hvm/irq.h b/xen/include/xen/hvm/irq.h
new file mode 100644
index 0000000000..952be135d3
--- /dev/null
+++ b/xen/include/xen/hvm/irq.h
@@ -0,0 +1,98 @@
+/******************************************************************************
+ * irq.h
+ * 
+ * Interrupt distribution and delivery logic.
+ * 
+ * Copyright (c) 2006, K A Fraser, XenSource Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#ifndef __XEN_HVM_IRQ_H__
+#define __XEN_HVM_IRQ_H__
+
+#include <xen/types.h>
+#include <xen/spinlock.h>
+#include <asm/irq.h>
+#include <public/hvm/save.h>
+
+struct dev_intx_gsi_link {
+    struct list_head list;
+    uint8_t device;
+    uint8_t intx;
+    uint8_t gsi;
+    uint8_t link;
+};
+
+#define _HVM_IRQ_DPCI_MSI  0x1
+
+struct hvm_gmsi_info {
+    uint32_t gvec;
+    uint32_t gflags;
+};
+
+struct hvm_mirq_dpci_mapping {
+    uint32_t flags;
+    int pending;
+    struct list_head digl_list;
+    struct domain *dom;
+    struct hvm_gmsi_info gmsi;
+};
+
+struct hvm_girq_dpci_mapping {
+    uint8_t valid;
+    uint8_t device;
+    uint8_t intx;
+    uint8_t machine_gsi;
+};
+
+#define NR_ISAIRQS  16
+#define NR_LINK     4
+
+/* Protected by domain's event_lock */
+struct hvm_irq_dpci {
+    /* Machine IRQ to guest device/intx mapping. */
+    DECLARE_BITMAP(mapping, NR_PIRQS);
+    struct hvm_mirq_dpci_mapping mirq[NR_IRQS];
+    /* Guest IRQ to guest device/intx mapping. */
+    struct hvm_girq_dpci_mapping girq[NR_IRQS];
+    uint8_t msi_gvec_pirq[NR_VECTORS];
+    DECLARE_BITMAP(dirq_mask, NR_IRQS);
+    /* Record of mapped ISA IRQs */
+    DECLARE_BITMAP(isairq_map, NR_ISAIRQS);
+    /* Record of mapped Links */
+    uint8_t link_cnt[NR_LINK];
+    struct timer hvm_timer[NR_IRQS];
+};
+
+/* Modify state of a PCI INTx wire. */
+void hvm_pci_intx_assert(
+    struct domain *d, unsigned int device, unsigned int intx);
+void hvm_pci_intx_deassert(
+    struct domain *d, unsigned int device, unsigned int intx);
+
+/* Modify state of an ISA device's IRQ wire. */
+void hvm_isa_irq_assert(
+    struct domain *d, unsigned int isa_irq);
+void hvm_isa_irq_deassert(
+    struct domain *d, unsigned int isa_irq);
+
+void hvm_set_pci_link_route(struct domain *d, u8 link, u8 isa_irq);
+
+void hvm_maybe_deassert_evtchn_irq(void);
+void hvm_assert_evtchn_irq(struct vcpu *v);
+void hvm_set_callback_via(struct domain *d, uint64_t via);
+
+
+#endif /* __XEN_HVM_IRQ_H__ */