Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.9-20170303' into staging

ppc patch queuye for 2017-03-03

This will probably be my last pull request before the hard freeze.  It
has some new work, but that has all been posted in draft before the
soft freeze, so I think it's reasonable to include in qemu-2.9.

This batch has:
    * A substantial amount of POWER9 work
        * Implements the legacy (hash) MMU for POWER9
	* Some more preliminaries for implementing the POWER9 radix
          MMU
	* POWER9 has_work
	* Basic POWER9 compatibility mode handling
	* Removal of some premature tests
    * Some cleanups and fixes to the existing MMU code to make the
      POWER9 work simpler
    * A bugfix for TCG multiply adds on power
    * Allow pseries guests to access PCIe extended config space

This also includes a code-motion not strictly in ppc code - moving
getrampagesize() from ppc code to exec.c.  This will make some future
VFIO improvements easier, Paolo said it was ok to merge via my tree.

# gpg: Signature made Fri 03 Mar 2017 03:20:36 GMT
# gpg:                using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg:                 aka "David Gibson (kernel.org) <dwg@kernel.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-2.9-20170303:
  target/ppc: rewrite f[n]m[add,sub] using float64_muladd
  spapr: Small cleanup of PPC MMU enums
  spapr_pci: Advertise access to PCIe extended config space
  target/ppc: Rework hash mmu page fault code and add defines for clarity
  target/ppc: Move no-execute and guarded page checking into new function
  target/ppc: Add execute permission checking to access authority check
  target/ppc: Add Instruction Authority Mask Register Check
  hw/ppc/spapr: Add POWER9 to pseries cpu models
  target/ppc/POWER9: Add cpu_has_work function for POWER9
  target/ppc/POWER9: Add POWER9 pa-features definition
  target/ppc/POWER9: Add POWER9 mmu fault handler
  target/ppc: Don't gen an SDR1 on POWER9 and rework register creation
  target/ppc: Add patb_entry to sPAPRMachineState
  target/ppc/POWER9: Add POWERPC_MMU_V3 bit
  powernv: Don't test POWER9 CPU yet
  exec, kvm, target-ppc: Move getrampagesize() to common code
  target/ppc: Add POWER9/ISAv3.00 to compat_table

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 50 insertions, 5 deletions

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 81c6c1c27c..14192accf4 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -390,20 +390,36 @@ static void spapr_populate_pa_features(CPUPPCState *env, void *fdt, int offset)
         0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
         0x00, 0x00, 0x00, 0x00, 0x80, 0x00,
         0x80, 0x00, 0x80, 0x00, 0x00, 0x00 };
+    /* Currently we don't advertise any of the "new" ISAv3.00 functionality */
+    uint8_t pa_features_300[] = { 64, 0,
+        0xf6, 0x1f, 0xc7, 0xc0, 0x80, 0xf0, /*  0 -  5 */
+        0x80, 0x00, 0x00, 0x00, 0x00, 0x00, /*  6 - 11 */
+        0x00, 0x00, 0x00, 0x00, 0x80, 0x00, /* 12 - 17 */
+        0x80, 0x00, 0x80, 0x00, 0x00, 0x00, /* 18 - 23 */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 24 - 29 */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 30 - 35 */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 36 - 41 */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 42 - 47 */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 48 - 53 */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 54 - 59 */
+        0x00, 0x00, 0x00, 0x00           }; /* 60 - 63 */
+
     uint8_t *pa_features;
     size_t pa_size;
 
-    switch (env->mmu_model) {
-    case POWERPC_MMU_2_06:
-    case POWERPC_MMU_2_06a:
+    switch (POWERPC_MMU_VER(env->mmu_model)) {
+    case POWERPC_MMU_VER_2_06:
         pa_features = pa_features_206;
         pa_size = sizeof(pa_features_206);
         break;
-    case POWERPC_MMU_2_07:
-    case POWERPC_MMU_2_07a:
+    case POWERPC_MMU_VER_2_07:
         pa_features = pa_features_207;
         pa_size = sizeof(pa_features_207);
         break;
+    case POWERPC_MMU_VER_3_00:
+        pa_features = pa_features_300;
+        pa_size = sizeof(pa_features_300);
+        break;
     default:
         return;
     }
@@ -1055,6 +1071,13 @@ static void emulate_spapr_hypercall(PPCVirtualHypervisor *vhyp,
     }
 }
 
+static uint64_t spapr_get_patbe(PPCVirtualHypervisor *vhyp)
+{
+    sPAPRMachineState *spapr = SPAPR_MACHINE(vhyp);
+
+    return spapr->patb_entry;
+}
+
 #define HPTE(_table, _i)   (void *)(((uint64_t *)(_table)) + ((_i) * 2))
 #define HPTE_VALID(_hpte)  (tswap64(*((uint64_t *)(_hpte))) & HPTE64_V_VALID)
 #define HPTE_DIRTY(_hpte)  (tswap64(*((uint64_t *)(_hpte))) & HPTE64_V_HPTE_DIRTY)
@@ -1234,6 +1257,8 @@ static void ppc_spapr_reset(void)
     /* Check for unknown sysbus devices */
     foreach_dynamic_sysbus_device(find_unknown_sysbus_device, NULL);
 
+    spapr->patb_entry = 0;
+
     /* Allocate and/or reset the hash page table */
     spapr_reallocate_hpt(spapr,
                          spapr_hpt_shift_for_ramsize(machine->maxram_size),
@@ -1427,6 +1452,24 @@ static const VMStateDescription vmstate_spapr_ov5_cas = {
     },
 };
 
+static bool spapr_patb_entry_needed(void *opaque)
+{
+    sPAPRMachineState *spapr = opaque;
+
+    return !!spapr->patb_entry;
+}
+
+static const VMStateDescription vmstate_spapr_patb_entry = {
+    .name = "spapr_patb_entry",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .needed = spapr_patb_entry_needed,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT64(patb_entry, sPAPRMachineState),
+        VMSTATE_END_OF_LIST()
+    },
+};
+
 static const VMStateDescription vmstate_spapr = {
     .name = "spapr",
     .version_id = 3,
@@ -1444,6 +1487,7 @@ static const VMStateDescription vmstate_spapr = {
     },
     .subsections = (const VMStateDescription*[]) {
         &vmstate_spapr_ov5_cas,
+        &vmstate_spapr_patb_entry,
         NULL
     }
 };
@@ -3049,6 +3093,7 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data)
     vhc->map_hptes = spapr_map_hptes;
     vhc->unmap_hptes = spapr_unmap_hptes;
     vhc->store_hpte = spapr_store_hpte;
+    vhc->get_patbe = spapr_get_patbe;
     xic->ics_get = spapr_ics_get;
     xic->ics_resend = spapr_ics_resend;
     xic->icp_get = spapr_icp_get;