Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.12-20180117' into staging

ppc patch queue 2017-01-17

Another pull request for ppc related patches.  The most interesting
thing here is the new capabilities framework for the pseries machine
type.  This gives us better handling of several existing
incompatibilities between TCG, PR and HV KVM, as well as new ones that
arise with POWER9.  Further, it will allow reasonable handling of the
advertisement of features necessary to mitigate the recent CVEs
(Spectre and Meltdown).

In addition there's:
     * Improvide handling of different "vsmt" modes
     * Significant enhancements to the "pnv" machine type
     * Assorted other bugfixes

# gpg: Signature made Wed 17 Jan 2018 02:21:50 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-2.12-20180117: (22 commits)
  target-ppc: Fix booke206 tlbwe TLB instruction
  target/ppc: add support for POWER9 HILE
  ppc/pnv: change initrd address
  ppc/pnv: fix XSCOM core addressing on POWER9
  ppc/pnv: introduce pnv*_is_power9() helpers
  ppc/pnv: change core mask for POWER9
  ppc/pnv: use POWER9 DD2 processor
  tests/boot-serial-test: fix powernv support
  ppc/pnv: Update skiboot firmware image
  spapr: Adjust default VSMT value for better migration compatibility
  spapr: Allow some cases where we can't set VSMT mode in the kernel
  target/ppc: Clarify compat mode max_threads value
  ppc: Change Power9 compat table to support at most 8 threads/core
  spapr: Remove unnecessary 'options' field from sPAPRCapabilityInfo
  hw/ppc/spapr_caps: Rework spapr_caps to use uint8 internal representation
  spapr: Handle Decimal Floating Point (DFP) as an optional capability
  spapr: Handle VMX/VSX presence as an spapr capability flag
  target/ppc: Clean up probing of VMX, VSX and DFP availability on KVM
  spapr: Validate capabilities on migration
  spapr: Treat Hardware Transactional Memory (HTM) as an optional capability
  ...

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

3 files changed, 70 insertions, 3 deletions

diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h
index 61896f9fd7..90759240a7 100644
--- a/include/hw/ppc/pnv.h
+++ b/include/hw/ppc/pnv.h
@@ -74,7 +74,6 @@ typedef struct PnvChipClass {
     uint64_t     cores_mask;
 
     hwaddr       xscom_base;
-    hwaddr       xscom_core_base;
 
     uint32_t (*core_pir)(PnvChip *chip, uint32_t core_id);
 } PnvChipClass;
@@ -138,6 +137,16 @@ typedef struct PnvMachineState {
     Notifier     powerdown_notifier;
 } PnvMachineState;
 
+static inline bool pnv_chip_is_power9(const PnvChip *chip)
+{
+    return PNV_CHIP_GET_CLASS(chip)->chip_type == PNV_CHIP_POWER9;
+}
+
+static inline bool pnv_is_power9(PnvMachineState *pnv)
+{
+    return pnv_chip_is_power9(pnv->chips[0]);
+}
+
 #define PNV_FDT_ADDR          0x01000000
 #define PNV_TIMEBASE_FREQ     512000000ULL
 
diff --git a/include/hw/ppc/pnv_xscom.h b/include/hw/ppc/pnv_xscom.h
index 7252e219e2..fb1bd5df09 100644
--- a/include/hw/ppc/pnv_xscom.h
+++ b/include/hw/ppc/pnv_xscom.h
@@ -21,6 +21,8 @@
 
 #include "qom/object.h"
 
+typedef struct PnvChip PnvChip;
+
 typedef struct PnvXScomInterface {
     Object parent;
 } PnvXScomInterface;
@@ -54,8 +56,15 @@ typedef struct PnvXScomInterfaceClass {
  *   PCB SLAVE   0x110Fxxxx
  */
 
-#define PNV_XSCOM_EX_CORE_BASE(base, i) ((base) | ((uint64_t)(i) << 24))
-#define PNV_XSCOM_EX_CORE_SIZE    0x100000
+#define PNV_XSCOM_EX_CORE_BASE    0x10000000ull
+
+#define PNV_XSCOM_EX_BASE(core) \
+    (PNV_XSCOM_EX_CORE_BASE | ((uint64_t)(core) << 24))
+#define PNV_XSCOM_EX_SIZE         0x100000
+
+#define PNV_XSCOM_P9_EC_BASE(core) \
+    ((uint64_t)(((core) & 0x1F) + 0x20) << 24)
+#define PNV_XSCOM_P9_EC_SIZE      0x100000
 
 #define PNV_XSCOM_LPC_BASE        0xb0020
 #define PNV_XSCOM_LPC_SIZE        0x4
diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index 14757b805e..0f5628f22e 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -51,6 +51,31 @@ typedef enum {
 } sPAPRResizeHPT;
 
 /**
+ * Capabilities
+ */
+
+/* Hardware Transactional Memory */
+#define SPAPR_CAP_HTM                   0x00
+/* Vector Scalar Extensions */
+#define SPAPR_CAP_VSX                   0x01
+/* Decimal Floating Point */
+#define SPAPR_CAP_DFP                   0x02
+/* Num Caps */
+#define SPAPR_CAP_NUM                   (SPAPR_CAP_DFP + 1)
+
+/*
+ * Capability Values
+ */
+/* Bool Caps */
+#define SPAPR_CAP_OFF                   0x00
+#define SPAPR_CAP_ON                    0x01
+
+typedef struct sPAPRCapabilities sPAPRCapabilities;
+struct sPAPRCapabilities {
+    uint8_t caps[SPAPR_CAP_NUM];
+};
+
+/**
  * sPAPRMachineClass:
  */
 struct sPAPRMachineClass {
@@ -66,6 +91,7 @@ struct sPAPRMachineClass {
                           hwaddr *mmio32, hwaddr *mmio64,
                           unsigned n_dma, uint32_t *liobns, Error **errp);
     sPAPRResizeHPT resize_hpt_default;
+    sPAPRCapabilities default_caps;
 };
 
 /**
@@ -127,6 +153,9 @@ struct sPAPRMachineState {
     MemoryHotplugState hotplug_memory;
 
     const char *icp_type;
+
+    bool cmd_line_caps[SPAPR_CAP_NUM];
+    sPAPRCapabilities def, eff, mig;
 };
 
 #define H_SUCCESS         0
@@ -724,4 +753,24 @@ int spapr_irq_alloc_block(sPAPRMachineState *spapr, int num, bool lsi,
 void spapr_irq_free(sPAPRMachineState *spapr, int irq, int num);
 qemu_irq spapr_qirq(sPAPRMachineState *spapr, int irq);
 
+
+int spapr_caps_pre_load(void *opaque);
+int spapr_caps_pre_save(void *opaque);
+
+/*
+ * Handling of optional capabilities
+ */
+extern const VMStateDescription vmstate_spapr_cap_htm;
+extern const VMStateDescription vmstate_spapr_cap_vsx;
+extern const VMStateDescription vmstate_spapr_cap_dfp;
+
+static inline uint8_t spapr_get_cap(sPAPRMachineState *spapr, int cap)
+{
+    return spapr->eff.caps[cap];
+}
+
+void spapr_caps_reset(sPAPRMachineState *spapr);
+void spapr_caps_add_properties(sPAPRMachineClass *smc, Error **errp);
+int spapr_caps_post_migration(sPAPRMachineState *spapr);
+
 #endif /* HW_SPAPR_H */