diff mbox series

[v2,48/66] target/arm: Add ARMMMUIdx_Phys_{S,NS}

Message ID 20220822152741.1617527-49-richard.henderson@linaro.org
State New
Headers show
Series target/arm: Implement FEAT_HAFDBS | expand

Commit Message

Richard Henderson Aug. 22, 2022, 3:27 p.m. UTC 
Not yet used, but add mmu indexes for 1-1 mapping
to physical addresses.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/cpu-param.h | 2 +-
 target/arm/cpu.h       | 4 ++++
 target/arm/ptw.c       | 9 +++++++++
 3 files changed, 14 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/target/arm/cpu-param.h b/target/arm/cpu-param.h
index 689a9645dc..98bd9e435e 100644
--- a/target/arm/cpu-param.h
+++ b/target/arm/cpu-param.h
@@ -40,6 +40,6 @@ 
     bool guarded;
 #endif
 
-#define NB_MMU_MODES 8
+#define NB_MMU_MODES 10
 
 #endif
diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index f48dcadad6..76391dc47d 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -2959,6 +2959,10 @@  typedef enum ARMMMUIdx {
     ARMMMUIdx_E2        = 6 | ARM_MMU_IDX_A,
     ARMMMUIdx_E3        = 7 | ARM_MMU_IDX_A,
 
+    /* TLBs with 1-1 mapping to the physical address spaces. */
+    ARMMMUIdx_Phys_NS   = 8 | ARM_MMU_IDX_A,
+    ARMMMUIdx_Phys_S    = 9 | ARM_MMU_IDX_A,
+
     /*
      * These are not allocated TLBs and are used only for AT system
      * instructions or for the first stage of an S12 page table walk.
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index 69c22c039b..e409c8034f 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -179,6 +179,11 @@  static bool regime_translation_disabled(CPUARMState *env, ARMMMUIdx mmu_idx,
     case ARMMMUIdx_E3:
         break;
 
+    case ARMMMUIdx_Phys_NS:
+    case ARMMMUIdx_Phys_S:
+        /* No translation for physical address spaces. */
+        return true;
+
     default:
         g_assert_not_reached();
     }
@@ -2289,6 +2294,8 @@  static bool get_phys_addr_disabled(CPUARMState *env, target_ulong address,
     switch (mmu_idx) {
     case ARMMMUIdx_Stage2:
     case ARMMMUIdx_Stage2_S:
+    case ARMMMUIdx_Phys_NS:
+    case ARMMMUIdx_Phys_S:
         memattr = 0x00;    /* unused, but Device, nGnRnE */
         shareability = 0;  /* unused, but non-shareable */
         break;
@@ -2579,6 +2586,7 @@  bool get_phys_addr(CPUARMState *env, target_ulong address,
         is_secure = arm_is_secure_below_el3(env);
         break;
     case ARMMMUIdx_Stage2:
+    case ARMMMUIdx_Phys_NS:
     case ARMMMUIdx_MPrivNegPri:
     case ARMMMUIdx_MUserNegPri:
     case ARMMMUIdx_MPriv:
@@ -2587,6 +2595,7 @@  bool get_phys_addr(CPUARMState *env, target_ulong address,
         break;
     case ARMMMUIdx_E3:
     case ARMMMUIdx_Stage2_S:
+    case ARMMMUIdx_Phys_S:
     case ARMMMUIdx_MSPrivNegPri:
     case ARMMMUIdx_MSUserNegPri:
     case ARMMMUIdx_MSPriv: