[Qemu-devel] [PATCH 24/25] s390x/pci: Rework memory access in zpci instruction

[Jens Freimann <jfrei@linux.vnet.ibm.com>]

From: Frank Blaschka <frank.blaschka@de.ibm.com>

Change zpci instructions to use the new logical memory access
functions.

Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
---
 hw/s390x/s390-pci-inst.c | 37 ++++++++++++++++++++++++++++---------
 1 file changed, 28 insertions(+), 9 deletions(-)

diff --git a/hw/s390x/s390-pci-inst.c b/hw/s390x/s390-pci-inst.c
index 9e5bc5b..08d8aa6 100644
--- a/hw/s390x/s390-pci-inst.c
+++ b/hw/s390x/s390-pci-inst.c
@@ -155,7 +155,9 @@ int clp_service_call(S390CPU *cpu, uint8_t r2)
         return 0;
     }
 
-    cpu_physical_memory_read(env->regs[r2], buffer, sizeof(*reqh));
+    if (s390_cpu_virt_mem_read(cpu, env->regs[r2], buffer, sizeof(*reqh))) {
+        return 0;
+    }
     reqh = (ClpReqHdr *)buffer;
     req_len = lduw_p(&reqh->len);
     if (req_len < 16 || req_len > 8184 || (req_len % 8 != 0)) {
@@ -163,7 +165,10 @@ int clp_service_call(S390CPU *cpu, uint8_t r2)
         return 0;
     }
 
-    cpu_physical_memory_read(env->regs[r2], buffer, req_len + sizeof(*resh));
+    if (s390_cpu_virt_mem_read(cpu, env->regs[r2], buffer,
+                               req_len + sizeof(*resh))) {
+        return 0;
+    }
     resh = (ClpRspHdr *)(buffer + req_len);
     res_len = lduw_p(&resh->len);
     if (res_len < 8 || res_len > 8176 || (res_len % 8 != 0)) {
@@ -175,7 +180,10 @@ int clp_service_call(S390CPU *cpu, uint8_t r2)
         return 0;
     }
 
-    cpu_physical_memory_read(env->regs[r2], buffer, req_len + res_len);
+    if (s390_cpu_virt_mem_read(cpu, env->regs[r2], buffer,
+                               req_len + res_len)) {
+        return 0;
+    }
 
     if (req_len != 32) {
         stw_p(&resh->rsp, CLP_RC_LEN);
@@ -269,7 +277,10 @@ int clp_service_call(S390CPU *cpu, uint8_t r2)
     }
 
 out:
-    cpu_physical_memory_write(env->regs[r2], buffer, req_len + res_len);
+    if (s390_cpu_virt_mem_write(cpu, env->regs[r2], buffer,
+                                req_len + res_len)) {
+        return 0;
+    }
     setcc(cpu, cc);
     return 0;
 }
@@ -539,10 +550,10 @@ int pcistb_service_call(S390CPU *cpu, uint8_t r1, uint8_t r3, uint64_t gaddr)
     S390PCIBusDevice *pbdev;
     MemoryRegion *mr;
     int i;
-    uint64_t val;
     uint32_t fh;
     uint8_t pcias;
     uint8_t len;
+    uint8_t buffer[128];
 
     if (env->psw.mask & PSW_MASK_PSTATE) {
         program_interrupt(env, PGM_PRIVILEGED, 6);
@@ -590,9 +601,12 @@ int pcistb_service_call(S390CPU *cpu, uint8_t r1, uint8_t r3, uint64_t gaddr)
         return 0;
     }
 
+    if (s390_cpu_virt_mem_read(cpu, gaddr, buffer, len)) {
+        return 0;
+    }
+
     for (i = 0; i < len / 8; i++) {
-        val = ldq_phys(&address_space_memory, gaddr + i * 8);
-        io_mem_write(mr, env->regs[r3] + i * 8, val, 8);
+        io_mem_write(mr, env->regs[r3] + i * 8, ldq_p(buffer + i * 8), 8);
     }
 
     setcc(cpu, ZPCI_PCI_LS_OK);
@@ -709,7 +723,9 @@ int mpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba)
         return 0;
     }
 
-    cpu_physical_memory_read(fiba, (uint8_t *)&fib, sizeof(fib));
+    if (s390_cpu_virt_mem_read(cpu, fiba, (uint8_t *)&fib, sizeof(fib))) {
+        return 0;
+    }
 
     switch (oc) {
     case ZPCI_MOD_FC_REG_INT:
@@ -809,7 +825,10 @@ int stpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba)
         fib.fc |= 0x10;
     }
 
-    cpu_physical_memory_write(fiba, (uint8_t *)&fib, sizeof(fib));
+    if (s390_cpu_virt_mem_write(cpu, fiba, (uint8_t *)&fib, sizeof(fib))) {
+        return 0;
+    }
+
     setcc(cpu, cc);
     return 0;
 }
-- 
2.1.4