sPAPR: Introduce rtas_ldq()

This introduces rtas_ldq() to load 64-bits parameter from continuous
two 4-bytes memory chunk of RTAS parameter buffer, to simplify the
code.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

2 files changed, 15 insertions, 10 deletions

diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index 6782fd0..54292c9 100644
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -140,7 +140,7 @@ static void rtas_ibm_read_pci_config(PowerPCCPU *cpu, sPAPRMachineState *spapr,
         return;
     }
 
-    buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
+    buid = rtas_ldq(args, 1);
     size = rtas_ld(args, 3);
     addr = rtas_ld(args, 0);
 
@@ -206,7 +206,7 @@ static void rtas_ibm_write_pci_config(PowerPCCPU *cpu, sPAPRMachineState *spapr,
         return;
     }
 
-    buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
+    buid = rtas_ldq(args, 1);
     val = rtas_ld(args, 4);
     size = rtas_ld(args, 3);
     addr = rtas_ld(args, 0);
@@ -269,7 +269,7 @@ static void rtas_ibm_change_msi(PowerPCCPU *cpu, sPAPRMachineState *spapr,
                                 target_ulong rets)
 {
     uint32_t config_addr = rtas_ld(args, 0);
-    uint64_t buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
+    uint64_t buid = rtas_ldq(args, 1);
     unsigned int func = rtas_ld(args, 3);
     unsigned int req_num = rtas_ld(args, 4); /* 0 == remove all */
     unsigned int seq_num = rtas_ld(args, 5);
@@ -391,7 +391,7 @@ static void rtas_ibm_query_interrupt_source_number(PowerPCCPU *cpu,
                                                    target_ulong rets)
 {
     uint32_t config_addr = rtas_ld(args, 0);
-    uint64_t buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
+    uint64_t buid = rtas_ldq(args, 1);
     unsigned int intr_src_num = -1, ioa_intr_num = rtas_ld(args, 3);
     sPAPRPHBState *phb = NULL;
     PCIDevice *pdev = NULL;
@@ -440,7 +440,7 @@ static void rtas_ibm_set_eeh_option(PowerPCCPU *cpu,
         goto param_error_exit;
     }
 
-    buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
+    buid = rtas_ldq(args, 1);
     addr = rtas_ld(args, 0);
     option = rtas_ld(args, 3);
 
@@ -484,7 +484,7 @@ static void rtas_ibm_get_config_addr_info2(PowerPCCPU *cpu,
         goto param_error_exit;
     }
 
-    buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
+    buid = rtas_ldq(args, 1);
     sphb = spapr_pci_find_phb(spapr, buid);
     if (!sphb) {
         goto param_error_exit;
@@ -539,7 +539,7 @@ static void rtas_ibm_read_slot_reset_state2(PowerPCCPU *cpu,
         goto param_error_exit;
     }
 
-    buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
+    buid = rtas_ldq(args, 1);
     sphb = spapr_pci_find_phb(spapr, buid);
     if (!sphb) {
         goto param_error_exit;
@@ -584,7 +584,7 @@ static void rtas_ibm_set_slot_reset(PowerPCCPU *cpu,
         goto param_error_exit;
     }
 
-    buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
+    buid = rtas_ldq(args, 1);
     option = rtas_ld(args, 3);
     sphb = spapr_pci_find_phb(spapr, buid);
     if (!sphb) {
@@ -619,7 +619,7 @@ static void rtas_ibm_configure_pe(PowerPCCPU *cpu,
         goto param_error_exit;
     }
 
-    buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
+    buid = rtas_ldq(args, 1);
     sphb = spapr_pci_find_phb(spapr, buid);
     if (!sphb) {
         goto param_error_exit;
@@ -654,7 +654,7 @@ static void rtas_ibm_slot_error_detail(PowerPCCPU *cpu,
         goto param_error_exit;
     }
 
-    buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
+    buid = rtas_ldq(args, 1);
     sphb = spapr_pci_find_phb(spapr, buid);
     if (!sphb) {
         goto param_error_exit;
diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index d250967..cbe3463 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -489,6 +489,11 @@ static inline uint32_t rtas_ld(target_ulong phys, int n)
     return ldl_be_phys(&address_space_memory, ppc64_phys_to_real(phys + 4*n));
 }
 
+static inline uint64_t rtas_ldq(target_ulong phys, int n)
+{
+    return (uint64_t)rtas_ld(phys, n) << 32 | rtas_ld(phys, n + 1);
+}
+
 static inline void rtas_st(target_ulong phys, int n, uint32_t val)
 {
     stl_be_phys(&address_space_memory, ppc64_phys_to_real(phys + 4*n), val);