[PULL 11/30] target/arm: Move S1_ptw_translate outside arm_ld[lq]_ptw

[Peter Maydell]

From: Richard Henderson <richard.henderson@linaro.org>

Separate S1 translation from the actual lookup.
Will enable lpae hardware updates.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20221024051851.3074715-6-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/ptw.c | 41 ++++++++++++++++++++++-------------------
 1 file changed, 22 insertions(+), 19 deletions(-)

diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index 3c153f68318..44341a9dbcb 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -300,18 +300,12 @@ static bool S1_ptw_translate(CPUARMState *env, 
S1Translate *ptw,
 }
 
 /* All loads done in the course of a page table walk go through here. */
-static uint32_t arm_ldl_ptw(CPUARMState *env, S1Translate *ptw, hwaddr addr,
+static uint32_t arm_ldl_ptw(CPUARMState *env, S1Translate *ptw,
                             ARMMMUFaultInfo *fi)
 {
     CPUState *cs = env_cpu(env);
     uint32_t data;
 
-    if (!S1_ptw_translate(env, ptw, addr, fi)) {
-        /* Failure. */
-        assert(fi->s1ptw);
-        return 0;
-    }
-
     if (likely(ptw->out_host)) {
         /* Page tables are in RAM, and we have the host address. */
         if (ptw->out_be) {
@@ -339,18 +333,12 @@ static uint32_t arm_ldl_ptw(CPUARMState *env, S1Translate 
*ptw, hwaddr addr,
     return data;
 }
 
-static uint64_t arm_ldq_ptw(CPUARMState *env, S1Translate *ptw, hwaddr addr,
+static uint64_t arm_ldq_ptw(CPUARMState *env, S1Translate *ptw,
                             ARMMMUFaultInfo *fi)
 {
     CPUState *cs = env_cpu(env);
     uint64_t data;
 
-    if (!S1_ptw_translate(env, ptw, addr, fi)) {
-        /* Failure. */
-        assert(fi->s1ptw);
-        return 0;
-    }
-
     if (likely(ptw->out_host)) {
         /* Page tables are in RAM, and we have the host address. */
         if (ptw->out_be) {
@@ -507,7 +495,10 @@ static bool get_phys_addr_v5(CPUARMState *env, S1Translate 
*ptw,
         fi->type = ARMFault_Translation;
         goto do_fault;
     }
-    desc = arm_ldl_ptw(env, ptw, table, fi);
+    if (!S1_ptw_translate(env, ptw, table, fi)) {
+        goto do_fault;
+    }
+    desc = arm_ldl_ptw(env, ptw, fi);
     if (fi->type != ARMFault_None) {
         goto do_fault;
     }
@@ -545,7 +536,10 @@ static bool get_phys_addr_v5(CPUARMState *env, S1Translate 
*ptw,
             /* Fine pagetable.  */
             table = (desc & 0xfffff000) | ((address >> 8) & 0xffc);
         }
-        desc = arm_ldl_ptw(env, ptw, table, fi);
+        if (!S1_ptw_translate(env, ptw, table, fi)) {
+            goto do_fault;
+        }
+        desc = arm_ldl_ptw(env, ptw, fi);
         if (fi->type != ARMFault_None) {
             goto do_fault;
         }
@@ -630,7 +624,10 @@ static bool get_phys_addr_v6(CPUARMState *env, S1Translate 
*ptw,
         fi->type = ARMFault_Translation;
         goto do_fault;
     }
-    desc = arm_ldl_ptw(env, ptw, table, fi);
+    if (!S1_ptw_translate(env, ptw, table, fi)) {
+        goto do_fault;
+    }
+    desc = arm_ldl_ptw(env, ptw, fi);
     if (fi->type != ARMFault_None) {
         goto do_fault;
     }
@@ -683,7 +680,10 @@ static bool get_phys_addr_v6(CPUARMState *env, S1Translate 
*ptw,
         ns = extract32(desc, 3, 1);
         /* Lookup l2 entry.  */
         table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc);
-        desc = arm_ldl_ptw(env, ptw, table, fi);
+        if (!S1_ptw_translate(env, ptw, table, fi)) {
+            goto do_fault;
+        }
+        desc = arm_ldl_ptw(env, ptw, fi);
         if (fi->type != ARMFault_None) {
             goto do_fault;
         }
@@ -1272,7 +1272,10 @@ static bool get_phys_addr_lpae(CPUARMState *env, 
S1Translate *ptw,
             ptw->in_ptw_idx &= ~1;
             ptw->in_secure = false;
         }
-        descriptor = arm_ldq_ptw(env, ptw, descaddr, fi);
+        if (!S1_ptw_translate(env, ptw, descaddr, fi)) {
+            goto do_fault;
+        }
+        descriptor = arm_ldq_ptw(env, ptw, fi);
         if (fi->type != ARMFault_None) {
             goto do_fault;
         }
-- 
2.25.1