[Qemu-devel] [PATCH v2 4/4] ppc: booke206: add "info tlb" support

[Scott Wood <scottwood@freescale.com>]

Signed-off-by: Scott Wood <scottwood@freescale.com>
---
v2: Remove redundant "valid?" comment

 hmp-commands.hx     |    2 +-
 monitor.c           |    5 ++-
 target-ppc/cpu.h    |    2 +
 target-ppc/helper.c |   88 +++++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 94 insertions(+), 3 deletions(-)

diff --git a/hmp-commands.hx b/hmp-commands.hx
index 6ad8806..014a4fb 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -1306,7 +1306,7 @@ show i8259 (PIC) state
 @item info pci
 show emulated PCI device info
 @item info tlb
-show virtual to physical memory mappings (i386, SH4 and SPARC only)
+show virtual to physical memory mappings (i386, SH4, SPARC, and PPC only)
 @item info mem
 show the active virtual memory mappings (i386 only)
 @item info jit
diff --git a/monitor.c b/monitor.c
index 67ceb46..7b9c2b1 100644
--- a/monitor.c
+++ b/monitor.c
@@ -2408,7 +2408,7 @@ static void tlb_info(Monitor *mon)
 
 #endif
 
-#if defined(TARGET_SPARC)
+#if defined(TARGET_SPARC) || defined(TARGET_PPC)
 static void tlb_info(Monitor *mon)
 {
     CPUState *env1 = mon_get_cpu();
@@ -2901,7 +2901,8 @@ static const mon_cmd_t info_cmds[] = {
         .user_print = do_pci_info_print,
         .mhandler.info_new = do_pci_info,
     },
-#if defined(TARGET_I386) || defined(TARGET_SH4) || defined(TARGET_SPARC)
+#if defined(TARGET_I386) || defined(TARGET_SH4) || defined(TARGET_SPARC) || \
+    defined(TARGET_PPC)
     {
         .name       = "tlb",
         .args_type  = "",
diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h
index 9cf8327..0d04779 100644
--- a/target-ppc/cpu.h
+++ b/target-ppc/cpu.h
@@ -2032,4 +2032,6 @@ static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
     env->nip = tb->pc;
 }
 
+void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUState *env);
+
 #endif /* !defined (__CPU_PPC_H__) */
diff --git a/target-ppc/helper.c b/target-ppc/helper.c
index 892c6e3..a3b7283 100644
--- a/target-ppc/helper.c
+++ b/target-ppc/helper.c
@@ -1466,6 +1466,94 @@ found_tlb:
     return ret;
 }
 
+static const char *book3e_tsize_to_str[32] = {
+    "1K", "2K", "4K", "8K", "16K", "32K", "64K", "128K", "256K", "512K",
+    "1M", "2M", "4M", "8M", "16M", "32M", "64M", "128M", "256M", "512M",
+    "1G", "2G", "4G", "8G", "16G", "32G", "64G", "128G", "256G", "512G",
+    "1T", "2T"
+};
+
+static void mmubooke206_dump_one_tlb(FILE *f, fprintf_function cpu_fprintf,
+                                     CPUState *env, int tlbn, int offset,
+                                     int tlbsize)
+{
+    ppcmas_tlb_t *entry;
+    int i;
+
+    cpu_fprintf(f, "\nTLB%d:\n", tlbn);
+    cpu_fprintf(f, "Effective          Physical           Size TID   TS SRWX URWX WIMGE U0123\n");
+
+    entry = &env->tlb.tlbm[offset];
+    for (i = 0; i < tlbsize; i++, entry++) {
+        target_phys_addr_t ea, pa, size;
+        int tsize;
+
+        if (!(entry->mas1 & MAS1_VALID)) {
+            continue;
+        }
+
+        tsize = (entry->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
+        size = 1024ULL << tsize;
+        ea = entry->mas2 & ~(size - 1);
+        pa = entry->mas7_3 & ~(size - 1);
+
+        cpu_fprintf(f, "0x%016" PRIx64 " 0x%016" PRIx64 " %4s %-5u %1u  S%c%c%c U%c%c%c %c%c%c%c%c U%c%c%c%c\n",
+                    (uint64_t)ea, (uint64_t)pa,
+                    book3e_tsize_to_str[tsize],
+                    (entry->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT,
+                    (entry->mas1 & MAS1_TS) >> MAS1_TS_SHIFT,
+                    entry->mas7_3 & MAS3_SR ? 'R' : '-',
+                    entry->mas7_3 & MAS3_SW ? 'W' : '-',
+                    entry->mas7_3 & MAS3_SX ? 'X' : '-',
+                    entry->mas7_3 & MAS3_UR ? 'R' : '-',
+                    entry->mas7_3 & MAS3_UW ? 'W' : '-',
+                    entry->mas7_3 & MAS3_UX ? 'X' : '-',
+                    entry->mas2 & MAS2_W ? 'W' : '-',
+                    entry->mas2 & MAS2_I ? 'I' : '-',
+                    entry->mas2 & MAS2_M ? 'M' : '-',
+                    entry->mas2 & MAS2_G ? 'G' : '-',
+                    entry->mas2 & MAS2_E ? 'E' : '-',
+                    entry->mas7_3 & MAS3_U0 ? '0' : '-',
+                    entry->mas7_3 & MAS3_U1 ? '1' : '-',
+                    entry->mas7_3 & MAS3_U2 ? '2' : '-',
+                    entry->mas7_3 & MAS3_U3 ? '3' : '-');
+    }
+}
+
+static void mmubooke206_dump_mmu(FILE *f, fprintf_function cpu_fprintf,
+                                 CPUState *env)
+{
+    int offset = 0;
+    int i;
+
+    if (kvm_enabled() && !env->kvm_sw_tlb) {
+        cpu_fprintf(f, "Cannot access KVM TLB\n");
+        return;
+    }
+
+    for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
+        int size = booke206_tlb_size(env, i);
+
+        if (size == 0) {
+            continue;
+        }
+
+        mmubooke206_dump_one_tlb(f, cpu_fprintf, env, i, offset, size);
+        offset += size;
+    }
+}
+
+void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUState *env)
+{
+    switch (env->mmu_model) {
+    case POWERPC_MMU_BOOKE206:
+        mmubooke206_dump_mmu(f, cpu_fprintf, env);
+        break;
+    default:
+        cpu_fprintf(f, "%s: unimplemented\n", __func__);
+    }
+}
+
 static inline int check_physical(CPUState *env, mmu_ctx_t *ctx,
                                  target_ulong eaddr, int rw)
 {
-- 
1.7.4.1