[kvm-commits] [PATCH] kvm: libkvm: add powerpc libkvm support code

[Avi Kivity]

From: Jerone Young <[EMAIL PROTECTED]>

While the kernel code has not yet made it upstream, after seeing the skeleton
patches making it in over the holiday, I decided to send this since
it's for the most part stable with what we are hacking away with in kernel.

Signed-off-by: Jerone Young <[EMAIL PROTECTED]>
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>

diff --git a/libkvm/libkvm-powerpc.c b/libkvm/libkvm-powerpc.c
index 5a8c556..33459bb 100644
--- a/libkvm/libkvm-powerpc.c
+++ b/libkvm/libkvm-powerpc.c
@@ -1,18 +1,75 @@
+/*
+ * This header is for functions & variables that will ONLY be
+ * used inside libkvm for x86.
+ * THESE ARE NOT EXPOSED TO THE USER AND ARE ONLY FOR USE
+ * WITHIN LIBKVM.
+ *
+ * derived from libkvm.c
+ *
+ * Copyright (C) 2006 Qumranet, Inc.
+ *
+ * Authors:
+ *      Avi Kivity   <[EMAIL PROTECTED]>
+ *      Yaniv Kamay  <[EMAIL PROTECTED]>
+ *
+ * Copyright 2007 IBM Corporation.
+ * Added by & Authors:
+ *     Jerone Young <[EMAIL PROTECTED]>
+ *     Christian Ehrhardt <[EMAIL PROTECTED]>
+ *
+ *
+ * This work is licensed under the GNU LGPL license, version 2.
+ */
+
 #include "libkvm.h"
 #include "kvm-powerpc.h"
 #include <errno.h>
+#include <stdio.h>
+
+int handle_dcr(struct kvm_run *run,  kvm_context_t kvm)
+{
+       int ret = 0;
+
+       if (run->dcr.is_write)
+               ret = kvm->callbacks->powerpc_dcr_write(kvm,
+                                       run->dcr.dcrn,run->dcr.data);
+       else
+               ret = kvm->callbacks->powerpc_dcr_read(kvm,
+                                       run->dcr.dcrn, &(run->dcr.data));
+
+       return ret;
+}
 
-int kvm_run_abi10(kvm_context_t kvm, int vcpu)
+int kvm_alloc_kernel_memory(kvm_context_t kvm, unsigned long memory,
+                               void **vm_mem)
 {
-       return -ENOSYS;
+       fprintf(stderr, "%s: Operation not supported\n", __FUNCTION__);
+       return -1;
 }
 
 void kvm_show_code(kvm_context_t kvm, int vcpu)
 {
+       fprintf(stderr, "%s: Operation not supported\n", __FUNCTION__);
 }
 
 void kvm_show_regs(kvm_context_t kvm, int vcpu)
 {
+       struct kvm_regs regs;
+       int i;
+
+       if (kvm_get_regs(kvm, vcpu, &regs))
+               return;
+
+       for (i=0; i<32; i+=4)
+       {
+               fprintf(stderr, "gpr%02d: %08x %08x %08x %08x\n", i,
+                       regs.gpr[i],
+                       regs.gpr[i+1],
+                       regs.gpr[i+2],
+                       regs.gpr[i+3]);
+       }
+
+       fflush(stdout);
 }
 
 int kvm_arch_create(kvm_context_t kvm, unsigned long phys_mem_bytes,
@@ -30,5 +87,15 @@ int kvm_arch_create_default_phys_mem(kvm_context_t kvm,
 
 int kvm_arch_run(struct kvm_run *run, kvm_context_t kvm, int vcpu)
 {
-       return 0;
+       int ret = 0;
+
+       switch (run->exit_reason){
+       case KVM_EXIT_DCR:
+               ret = handle_dcr(run, kvm);
+               break;
+       default:
+               ret = 1;
+               break;
+       }
+       return ret;
 }
diff --git a/libkvm/libkvm.h b/libkvm/libkvm.h
index 3aae6f6..2574abe 100644
--- a/libkvm/libkvm.h
+++ b/libkvm/libkvm.h
@@ -65,6 +65,10 @@ struct kvm_callbacks {
     void (*post_kvm_run)(void *opaque, int vcpu);
     int (*pre_kvm_run)(void *opaque, int vcpu);
     int (*tpr_access)(void *opaque, int vcpu, uint64_t rip, int is_write);
+#if defined(__powerpc__)
+    int (*powerpc_dcr_read)(kvm_context_t kvm, uint32_t dcrn, uint32_t *data);
+    int (*powerpc_dcr_write)(kvm_context_t kvm, uint32_t dcrn, uint32_t data);
+#endif
 };
 
 /*!

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