KVM: ia64: Implement some pal calls needed for windows 2008

For windows 2008, it needs more pal calls to implement for booting.
In addition, also changes the name of set_{sal, pal}_call_result to
get_{sal,pal}_call_result for readability.

Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

2 files changed, 152 insertions, 7 deletions

diff --git a/arch/ia64/kvm/kvm_fw.c b/arch/ia64/kvm/kvm_fw.c
index cb7600bdff9d..a8ae52ed5635 100644
--- a/arch/ia64/kvm/kvm_fw.c
+++ b/arch/ia64/kvm/kvm_fw.c
@@ -227,6 +227,18 @@ static struct ia64_pal_retval pal_proc_get_features(struct kvm_vcpu *vcpu)
         return result;
 }
 
+static struct ia64_pal_retval pal_register_info(struct kvm_vcpu *vcpu)
+{
+
+        struct ia64_pal_retval result = {0, 0, 0, 0};
+        long in0, in1, in2, in3;
+
+        kvm_get_pal_call_data(vcpu, &in0, &in1, &in2, &in3);
+        result.status = ia64_pal_register_info(in1, &result.v1, &result.v2);
+
+        return result;
+}
+
 static struct ia64_pal_retval pal_cache_info(struct kvm_vcpu *vcpu)
 {
 
@@ -268,8 +280,12 @@ static struct ia64_pal_retval pal_vm_summary(struct kvm_vcpu *vcpu)
 static struct ia64_pal_retval pal_vm_info(struct kvm_vcpu *vcpu)
 {
         struct ia64_pal_retval result;
+        unsigned long in0, in1, in2, in3;
 
-        INIT_PAL_STATUS_UNIMPLEMENTED(result);
+        kvm_get_pal_call_data(vcpu, &in0, &in1, &in2, &in3);
+
+        result.status = ia64_pal_vm_info(in1, in2,
+                        (pal_tc_info_u_t *)&result.v1, &result.v2);
 
         return result;
 }
@@ -292,6 +308,108 @@ static void prepare_for_halt(struct kvm_vcpu *vcpu)
         vcpu->arch.timer_fired = 0;
 }
 
+static struct ia64_pal_retval pal_perf_mon_info(struct kvm_vcpu *vcpu)
+{
+        long status;
+        unsigned long in0, in1, in2, in3, r9;
+        unsigned long pm_buffer[16];
+
+        kvm_get_pal_call_data(vcpu, &in0, &in1, &in2, &in3);
+        status = ia64_pal_perf_mon_info(pm_buffer,
+                                (pal_perf_mon_info_u_t *) &r9);
+        if (status != 0) {
+                printk(KERN_DEBUG"PAL_PERF_MON_INFO fails ret=%ld\n", status);
+        } else {
+                if (in1)
+                        memcpy((void *)in1, pm_buffer, sizeof(pm_buffer));
+                else {
+                        status = PAL_STATUS_EINVAL;
+                        printk(KERN_WARNING"Invalid parameters "
+                                                "for PAL call:0x%lx!\n", in0);
+                }
+        }
+        return (struct ia64_pal_retval){status, r9, 0, 0};
+}
+
+static struct ia64_pal_retval pal_halt_info(struct kvm_vcpu *vcpu)
+{
+        unsigned long in0, in1, in2, in3;
+        long status;
+        unsigned long res = 1000UL | (1000UL << 16) | (10UL << 32)
+                                        | (1UL << 61) | (1UL << 60);
+
+        kvm_get_pal_call_data(vcpu, &in0, &in1, &in2, &in3);
+        if (in1) {
+                memcpy((void *)in1, &res, sizeof(res));
+                status = 0;
+        } else{
+                status = PAL_STATUS_EINVAL;
+                printk(KERN_WARNING"Invalid parameters "
+                                        "for PAL call:0x%lx!\n", in0);
+        }
+
+        return (struct ia64_pal_retval){status, 0, 0, 0};
+}
+
+static struct ia64_pal_retval pal_mem_attrib(struct kvm_vcpu *vcpu)
+{
+        unsigned long r9;
+        long status;
+
+        status = ia64_pal_mem_attrib(&r9);
+
+        return (struct ia64_pal_retval){status, r9, 0, 0};
+}
+
+static void remote_pal_prefetch_visibility(void *v)
+{
+        s64 trans_type = (s64)v;
+        ia64_pal_prefetch_visibility(trans_type);
+}
+
+static struct ia64_pal_retval pal_prefetch_visibility(struct kvm_vcpu *vcpu)
+{
+        struct ia64_pal_retval result = {0, 0, 0, 0};
+        unsigned long in0, in1, in2, in3;
+        kvm_get_pal_call_data(vcpu, &in0, &in1, &in2, &in3);
+        result.status = ia64_pal_prefetch_visibility(in1);
+        if (result.status == 0) {
+                /* Must be performed on all remote processors
+                in the coherence domain. */
+                smp_call_function(remote_pal_prefetch_visibility,
+                                        (void *)in1, 1);
+                /* Unnecessary on remote processor for other vcpus!*/
+                result.status = 1;
+        }
+        return result;
+}
+
+static void remote_pal_mc_drain(void *v)
+{
+        ia64_pal_mc_drain();
+}
+
+static struct ia64_pal_retval pal_get_brand_info(struct kvm_vcpu *vcpu)
+{
+        struct ia64_pal_retval result = {0, 0, 0, 0};
+        unsigned long in0, in1, in2, in3;
+
+        kvm_get_pal_call_data(vcpu, &in0, &in1, &in2, &in3);
+
+        if (in1 == 0 && in2) {
+                char brand_info[128];
+                result.status = ia64_pal_get_brand_info(brand_info);
+                if (result.status == PAL_STATUS_SUCCESS)
+                        memcpy((void *)in2, brand_info, 128);
+        } else {
+                result.status = PAL_STATUS_REQUIRES_MEMORY;
+                printk(KERN_WARNING"Invalid parameters for "
+                                        "PAL call:0x%lx!\n", in0);
+        }
+
+        return result;
+}
+
 int kvm_pal_emul(struct kvm_vcpu *vcpu, struct kvm_run *run)
 {
 
@@ -300,14 +418,22 @@ int kvm_pal_emul(struct kvm_vcpu *vcpu, struct kvm_run *run)
         int ret = 1;
 
         gr28 = kvm_get_pal_call_index(vcpu);
-        /*printk("pal_call index:%lx\n",gr28);*/
         switch (gr28) {
         case PAL_CACHE_FLUSH:
                 result = pal_cache_flush(vcpu);
                 break;
+        case PAL_MEM_ATTRIB:
+                result = pal_mem_attrib(vcpu);
+                break;
         case PAL_CACHE_SUMMARY:
                 result = pal_cache_summary(vcpu);
                 break;
+        case PAL_PERF_MON_INFO:
+                result = pal_perf_mon_info(vcpu);
+                break;
+        case PAL_HALT_INFO:
+                result = pal_halt_info(vcpu);
+                break;
         case PAL_HALT_LIGHT:
         {
                 INIT_PAL_STATUS_SUCCESS(result);
@@ -317,6 +443,16 @@ int kvm_pal_emul(struct kvm_vcpu *vcpu, struct kvm_run *run)
         }
                 break;
 
+        case PAL_PREFETCH_VISIBILITY:
+                result = pal_prefetch_visibility(vcpu);
+                break;
+        case PAL_MC_DRAIN:
+                result.status = ia64_pal_mc_drain();
+                /* FIXME: All vcpus likely call PAL_MC_DRAIN.
+                   That causes the congestion. */
+                smp_call_function(remote_pal_mc_drain, NULL, 1);
+                break;
+
         case PAL_FREQ_RATIOS:
                 result = pal_freq_ratios(vcpu);
                 break;
@@ -346,6 +482,9 @@ int kvm_pal_emul(struct kvm_vcpu *vcpu, struct kvm_run *run)
                 INIT_PAL_STATUS_SUCCESS(result);
                 result.v1 = (1L << 32) | 1L;
                 break;
+        case PAL_REGISTER_INFO:
+                result = pal_register_info(vcpu);
+                break;
         case PAL_VM_PAGE_SIZE:
                 result.status = ia64_pal_vm_page_size(&result.v0,
                                                         &result.v1);
@@ -365,12 +504,18 @@ int kvm_pal_emul(struct kvm_vcpu *vcpu, struct kvm_run *run)
                 result.status = ia64_pal_version(
                                 (pal_version_u_t *)&result.v0,
                                 (pal_version_u_t *)&result.v1);
-
                 break;
         case PAL_FIXED_ADDR:
                 result.status = PAL_STATUS_SUCCESS;
                 result.v0 = vcpu->vcpu_id;
                 break;
+        case PAL_BRAND_INFO:
+                result = pal_get_brand_info(vcpu);
+                break;
+        case PAL_GET_PSTATE:
+        case PAL_CACHE_SHARED_INFO:
+                INIT_PAL_STATUS_UNIMPLEMENTED(result);
+                break;
         default:
                 INIT_PAL_STATUS_UNIMPLEMENTED(result);
                 printk(KERN_WARNING"kvm: Unsupported pal call,"
diff --git a/arch/ia64/kvm/process.c b/arch/ia64/kvm/process.c
index 0e727ce0d55c..b1dc80952d91 100644
--- a/arch/ia64/kvm/process.c
+++ b/arch/ia64/kvm/process.c
@@ -607,7 +607,7 @@ static void set_pal_call_data(struct kvm_vcpu *vcpu)
         p->exit_reason = EXIT_REASON_PAL_CALL;
 }
 
-static void set_pal_call_result(struct kvm_vcpu *vcpu)
+static void get_pal_call_result(struct kvm_vcpu *vcpu)
 {
         struct exit_ctl_data *p = &vcpu->arch.exit_data;
 
@@ -635,7 +635,7 @@ static void set_sal_call_data(struct kvm_vcpu *vcpu)
         p->exit_reason = EXIT_REASON_SAL_CALL;
 }
 
-static void set_sal_call_result(struct kvm_vcpu *vcpu)
+static void get_sal_call_result(struct kvm_vcpu *vcpu)
 {
         struct exit_ctl_data *p = &vcpu->arch.exit_data;
 
@@ -658,13 +658,13 @@ void  kvm_ia64_handle_break(unsigned long ifa, struct kvm_pt_regs *regs,
                 if (iim == DOMN_PAL_REQUEST) {
                         set_pal_call_data(v);
                         vmm_transition(v);
-                        set_pal_call_result(v);
+                        get_pal_call_result(v);
                         vcpu_increment_iip(v);
                         return;
                 } else if (iim == DOMN_SAL_REQUEST) {
                         set_sal_call_data(v);
                         vmm_transition(v);
-                        set_sal_call_result(v);
+                        get_sal_call_result(v);
                         vcpu_increment_iip(v);
                         return;
                 }