KVM: PPC: Book3S: Add MMIO emulation for FP and VSX instructions
This patch provides the MMIO load/store emulation for instructions
of 'double & vector unsigned char & vector signed char & vector
unsigned short & vector signed short & vector unsigned int & vector
signed int & vector double '.
The instructions that this adds emulation for are:
- ldx, ldux, lwax,
- lfs, lfsx, lfsu, lfsux, lfd, lfdx, lfdu, lfdux,
- stfs, stfsx, stfsu, stfsux, stfd, stfdx, stfdu, stfdux, stfiwx,
- lxsdx, lxsspx, lxsiwax, lxsiwzx, lxvd2x, lxvw4x, lxvdsx,
- stxsdx, stxsspx, stxsiwx, stxvd2x, stxvw4x
[paulus@ozlabs.org - some cleanups, fixes and rework, make it
compile for Book E, fix build when PR KVM is built in]
Signed-off-by: Bin Lu <lblulb@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index 01d05c7..2acc691 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -438,6 +438,11 @@ struct mmio_hpte_cache {
unsigned int index;
};
+#define KVMPPC_VSX_COPY_NONE 0
+#define KVMPPC_VSX_COPY_WORD 1
+#define KVMPPC_VSX_COPY_DWORD 2
+#define KVMPPC_VSX_COPY_DWORD_LOAD_DUMP 3
+
struct openpic;
struct kvm_vcpu_arch {
@@ -641,6 +646,21 @@ struct kvm_vcpu_arch {
u8 io_gpr; /* GPR used as IO source/target */
u8 mmio_host_swabbed;
u8 mmio_sign_extend;
+ /* conversion between single and double precision */
+ u8 mmio_sp64_extend;
+ /*
+ * Number of simulations for vsx.
+ * If we use 2*8bytes to simulate 1*16bytes,
+ * then the number should be 2 and
+ * mmio_vsx_copy_type=KVMPPC_VSX_COPY_DWORD.
+ * If we use 4*4bytes to simulate 1*16bytes,
+ * the number should be 4 and
+ * mmio_vsx_copy_type=KVMPPC_VSX_COPY_WORD.
+ */
+ u8 mmio_vsx_copy_nums;
+ u8 mmio_vsx_offset;
+ u8 mmio_vsx_copy_type;
+ u8 mmio_vsx_tx_sx_enabled;
u8 osi_needed;
u8 osi_enabled;
u8 papr_enabled;
@@ -729,6 +749,8 @@ struct kvm_vcpu_arch {
};
#define VCPU_FPR(vcpu, i) (vcpu)->arch.fp.fpr[i][TS_FPROFFSET]
+#define VCPU_VSX_FPR(vcpu, i, j) ((vcpu)->arch.fp.fpr[i][j])
+#define VCPU_VSX_VR(vcpu, i) ((vcpu)->arch.vr.vr[i])
/* Values for vcpu->arch.state */
#define KVMPPC_VCPU_NOTREADY 0
@@ -742,6 +764,7 @@ struct kvm_vcpu_arch {
#define KVM_MMIO_REG_FPR 0x0020
#define KVM_MMIO_REG_QPR 0x0040
#define KVM_MMIO_REG_FQPR 0x0060
+#define KVM_MMIO_REG_VSX 0x0080
#define __KVM_HAVE_ARCH_WQP
#define __KVM_HAVE_CREATE_DEVICE