[PATCH 3/4] hppa: Get physical address space bits from CPUHPPADef

Anton Johansson via qemu development posted 4 patches 13 hours ago
There is a newer version of this series
[PATCH 3/4] hppa: Get physical address space bits from CPUHPPADef
Posted by Anton Johansson via qemu development 13 hours ago
Signed-off-by: Anton Johansson <anjo@rev.ng>
---
 target/hppa/cpu.h        | 11 ++++++++---
 hw/hppa/machine.c        |  4 ++--
 hw/pci-host/astro.c      |  2 +-
 target/hppa/mem_helper.c | 40 ++++++++++++----------------------------
 4 files changed, 23 insertions(+), 34 deletions(-)

diff --git a/target/hppa/cpu.h b/target/hppa/cpu.h
index 43b4882fb4..487f0f5e9e 100644
--- a/target/hppa/cpu.h
+++ b/target/hppa/cpu.h
@@ -320,6 +320,11 @@ static inline const HPPACPUDef *hppa_def(CPUHPPAState *env)
     return HPPA_CPU_GET_CLASS(env_cpu(env))->def;
 }
 
+static inline uint8_t hppa_phys_addr_bits(CPUHPPAState *env)
+{
+    return hppa_def(env)->phys_addr_bits;
+}
+
 static inline bool hppa_is_pa20(CPUHPPAState *env)
 {
     return hppa_def(env)->is_pa20;
@@ -352,9 +357,9 @@ static inline vaddr hppa_form_gva(CPUHPPAState *env, uint64_t spc,
     return hppa_form_gva_mask(env->gva_offset_mask, spc, off);
 }
 
-hwaddr hppa_abs_to_phys_pa1x(vaddr addr);
-hwaddr hppa_abs_to_phys_pa2_w0(vaddr addr);
-hwaddr hppa_abs_to_phys_pa2_w1(vaddr addr);
+hwaddr hppa_abs_to_phys_pa1x(CPUHPPAState *env, vaddr addr);
+hwaddr hppa_abs_to_phys_pa2_w0(CPUHPPAState *env, vaddr addr);
+hwaddr hppa_abs_to_phys_pa2_w1(CPUHPPAState *env, vaddr addr);
 
 /*
  * Since PSW_{I,CB} will never need to be in tb->flags, reuse them.
diff --git a/hw/hppa/machine.c b/hw/hppa/machine.c
index 6a0487c362..8246f6bf65 100644
--- a/hw/hppa/machine.c
+++ b/hw/hppa/machine.c
@@ -181,12 +181,12 @@ static uint64_t linux_kernel_virt_to_phys(void *opaque, uint64_t addr)
 
 static uint64_t translate_pa10(void *dummy, uint64_t addr)
 {
-    return hppa_abs_to_phys_pa1x(addr);
+    return hppa_abs_to_phys_pa1x(cpu_env(first_cpu), addr);
 }
 
 static uint64_t translate_pa20(void *dummy, uint64_t addr)
 {
-    return hppa_abs_to_phys_pa2_w0(addr);
+    return hppa_abs_to_phys_pa2_w0(cpu_env(first_cpu), addr);
 }
 
 static HPPACPU *cpu[HPPA_MAX_CPUS];
diff --git a/hw/pci-host/astro.c b/hw/pci-host/astro.c
index 00a904277c..d38f81e553 100644
--- a/hw/pci-host/astro.c
+++ b/hw/pci-host/astro.c
@@ -303,7 +303,7 @@ static IOMMUTLBEntry astro_translate_iommu(IOMMUMemoryRegion *iommu,
      * language which not-coincidentally matches the PSW.W=0 mapping.
      */
     if (addr <= UINT32_MAX) {
-        entry = hppa_abs_to_phys_pa2_w0(addr);
+        entry = hppa_abs_to_phys_pa2_w0(cpu_env(first_cpu), addr);
     } else {
         entry = addr;
     }
diff --git a/target/hppa/mem_helper.c b/target/hppa/mem_helper.c
index 9199d1e06a..4bd806a53f 100644
--- a/target/hppa/mem_helper.c
+++ b/target/hppa/mem_helper.c
@@ -29,29 +29,12 @@
 #include "hw/core/cpu.h"
 #include "trace.h"
 
-/*
- * 64-bit (PA-RISC 2.0) machines are assumed to run PA-8700, and 32-bit
- * machines 7300LC.  This should give 44 and 32 bits of physical address
- * space respectively.
- *
- *   CPU model        Physical address space bits
- *   PA-7000--7300LC  32
- *   PA-8000--8600    40
- *   PA-8700--8900    44
- *
- * FIXME: However, the SeaBIOS firmware that is that tested against
- * uses 40-bit physical addresses, despite supposedly running a C3700
- * with a PA-8700 cpu, so use 40-bits for 64-bit.
- */
-#define HPPA_PHYS_ADDR_SPACE_BITS_PA20 40
-#define HPPA_PHYS_ADDR_SPACE_BITS_PA1X 32
-
-hwaddr hppa_abs_to_phys_pa1x(vaddr addr)
+hwaddr hppa_abs_to_phys_pa1x(CPUHPPAState *env, vaddr addr)
 {
-    return extract64(addr, 0, HPPA_PHYS_ADDR_SPACE_BITS_PA1X);
+    return extract64(addr, 0, hppa_phys_addr_bits(env));
 }
 
-hwaddr hppa_abs_to_phys_pa2_w1(vaddr addr)
+hwaddr hppa_abs_to_phys_pa2_w1(CPUHPPAState *env, vaddr addr)
 {
     /*
      * Figure H-8 "62-bit Absolute Accesses when PSW W-bit is 1" describes
@@ -64,11 +47,12 @@ hwaddr hppa_abs_to_phys_pa2_w1(vaddr addr)
      * Since the supported physical address space is below 54 bits, the
      * H-8 algorithm is moot and all that is left is to truncate.
      */
-    QEMU_BUILD_BUG_ON(HPPA_PHYS_ADDR_SPACE_BITS_PA20 > 54);
-    return sextract64(addr, 0, HPPA_PHYS_ADDR_SPACE_BITS_PA20);
+    const uint8_t pa = hppa_phys_addr_bits(env);
+    g_assert(pa <= 54);
+    return sextract64(addr, 0, pa);
 }
 
-hwaddr hppa_abs_to_phys_pa2_w0(vaddr addr)
+hwaddr hppa_abs_to_phys_pa2_w0(CPUHPPAState *env, vaddr addr)
 {
     /*
      * See Figure H-10, "Absolute Accesses when PSW W-bit is 0",
@@ -89,7 +73,7 @@ hwaddr hppa_abs_to_phys_pa2_w0(vaddr addr)
          * is what can be seen on physical machines too.
          */
         addr = (uint32_t)addr;
-        addr |= -1ull << (HPPA_PHYS_ADDR_SPACE_BITS_PA20 - 4);
+        addr |= -1ull << (hppa_phys_addr_bits(env) - 4);
     }
     return addr;
 }
@@ -233,13 +217,13 @@ int hppa_get_physical_address(CPUHPPAState *env, vaddr addr, int mmu_idx,
     if (MMU_IDX_MMU_DISABLED(mmu_idx)) {
         switch (mmu_idx) {
         case MMU_ABS_W_IDX:
-            phys = hppa_abs_to_phys_pa2_w1(addr);
+            phys = hppa_abs_to_phys_pa2_w1(env, addr);
             break;
         case MMU_ABS_IDX:
             if (hppa_is_pa20(env)) {
-                phys = hppa_abs_to_phys_pa2_w0(addr);
+                phys = hppa_abs_to_phys_pa2_w0(env, addr);
             } else {
-                phys = hppa_abs_to_phys_pa1x(addr);
+                phys = hppa_abs_to_phys_pa1x(env, addr);
             }
             break;
         default:
@@ -580,7 +564,7 @@ static void itlbt_pa20(CPUHPPAState *env, target_ulong r1,
     /* Align per the page size. */
     ent->pa &= TARGET_PAGE_MASK << mask_shift;
     /* Ignore the bits beyond physical address space. */
-    ent->pa = sextract64(ent->pa, 0, HPPA_PHYS_ADDR_SPACE_BITS_PA20);
+    ent->pa = sextract64(ent->pa, 0, hppa_phys_addr_bits(env));
 
     ent->t = extract64(r2, 61, 1);
     ent->d = extract64(r2, 60, 1);

-- 
2.52.0