[PATCH v2 2/8] xen/ppc: Add public/arch-ppc.h

[Shawn Anastasio <sanastasio@xxxxxxxxxxxxxxxxxxxxx>]

Signed-off-by: Shawn Anastasio <sanastasio@xxxxxxxxxxxxxxxxxxxxx>
---
v2:
  - Drop full license text in favor of SPDX header
  - Fix include guard naming (s/PPC64/PPC/g)
  - Use __aligned__ instead of aligned keyword
  - Fix macro naming conventions (use trailing underscore)
  - Drop unused MEMORY_PADDING, TRAP_INSTR definitions
  - Drop XENCOMM_INLINE_FLAG definition
  - Fix vcpu_guest_core_regs comment styling and spelling
  - Drop trailing comment at bottom of file

 xen/include/public/arch-ppc.h | 110 ++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 xen/include/public/arch-ppc.h

diff --git a/xen/include/public/arch-ppc.h b/xen/include/public/arch-ppc.h
new file mode 100644
index 0000000000..b7864b67ef
--- /dev/null
+++ b/xen/include/public/arch-ppc.h
@@ -0,0 +1,110 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) IBM Corp. 2005, 2006
+ * Copyright (C) Raptor Engineering, LLC 2023
+ *
+ * Authors: Hollis Blanchard <hollisb@xxxxxxxxxx>
+ *          Timothy Pearson <tpearson@xxxxxxxxxxxxxxxxxxxxx>
+ *          Shawn Anastasio <sanastasio@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#ifndef __XEN_PUBLIC_ARCH_PPC_H__
+#define __XEN_PUBLIC_ARCH_PPC_H__
+
+#define  int64_aligned_t  int64_t __attribute__((__aligned__(8)))
+#define uint64_aligned_t uint64_t __attribute__((__aligned__(8)))
+
+#ifndef __ASSEMBLY__
+#define ___DEFINE_XEN_GUEST_HANDLE(name, type)                  \
+    typedef union { type *p; unsigned long q; }                 \
+        __guest_handle_ ## name;                                \
+    typedef union { type *p; uint64_aligned_t q; }              \
+        __guest_handle_64_ ## name
+
+#define __DEFINE_XEN_GUEST_HANDLE(name, type) \
+    ___DEFINE_XEN_GUEST_HANDLE(name, type);   \
+    ___DEFINE_XEN_GUEST_HANDLE(const_##name, const type)
+#define DEFINE_XEN_GUEST_HANDLE(name)   __DEFINE_XEN_GUEST_HANDLE(name, name)
+#define __XEN_GUEST_HANDLE(name)        __guest_handle_64_ ## name
+#define XEN_GUEST_HANDLE(name)          __XEN_GUEST_HANDLE(name)
+#define XEN_GUEST_HANDLE_PARAM(name)    __guest_handle_ ## name
+#define set_xen_guest_handle_raw(hnd, val)                  \
+    do {                                                    \
+        __typeof__(&(hnd)) sxghr_tmp_ = &(hnd);             \
+        sxghr_tmp_->q = 0;                                  \
+        sxghr_tmp_->p = (val);                                \
+    } while ( 0 )
+#define set_xen_guest_handle(hnd, val) set_xen_guest_handle_raw(hnd, val)
+
+#ifdef __XEN_TOOLS__
+#define get_xen_guest_handle(val, hnd)  do { val = (hnd).p; } while (0)
+#endif
+
+typedef uint64_t xen_pfn_t;
+#define PRI_xen_pfn PRIx64
+#define PRIu_xen_pfn PRIu64
+
+/*
+ * Maximum number of virtual CPUs in legacy multi-processor guests.
+ * Only one. All other VCPUS must use VCPUOP_register_vcpu_info.
+ */
+#define XEN_LEGACY_MAX_VCPUS 1
+
+typedef uint64_t xen_ulong_t;
+#define PRI_xen_ulong PRIx64
+#endif
+
+#ifndef __ASSEMBLY__
+
+typedef uint64_t xen_ulong_t;
+
+/*
+ * User-accessible registers: most of these need to be saved/restored
+ * for every nested Xen invocation.
+ */
+struct vcpu_guest_core_regs
+{
+    uint64_t gprs[32];
+    uint64_t lr;
+    uint64_t ctr;
+    uint64_t srr0;
+    uint64_t srr1;
+    uint64_t pc;
+    uint64_t msr;
+    uint64_t fpscr;             /* XXX Is this necessary */
+    uint64_t xer;
+    uint64_t hid4;              /* debug only */
+    uint64_t dar;               /* debug only */
+    uint32_t dsisr;             /* debug only */
+    uint32_t cr;
+    uint32_t __pad;             /* good spot for another 32bit reg */
+    uint32_t entry_vector;
+};
+typedef struct vcpu_guest_core_regs vcpu_guest_core_regs_t;
+
+typedef uint64_t tsc_timestamp_t; /* RDTSC timestamp */ /* XXX timebase */
+
+/* ONLY used to communicate with dom0! See also struct exec_domain. */
+struct vcpu_guest_context {
+    vcpu_guest_core_regs_t user_regs;         /* User-level CPU registers     
*/
+    uint64_t sdr1;                     /* Pagetable base               */
+    /* XXX etc */
+};
+typedef struct vcpu_guest_context vcpu_guest_context_t;
+DEFINE_XEN_GUEST_HANDLE(vcpu_guest_context_t);
+
+struct arch_shared_info {
+    uint64_t boot_timebase;
+};
+
+struct arch_vcpu_info {
+};
+
+struct xen_arch_domainconfig {
+};
+
+typedef struct xen_pmu_arch { uint8_t dummy; } xen_pmu_arch_t;
+
+#endif
+
+#endif /* __XEN_PUBLIC_ARCH_PPC_H__ */
--
2.30.2