Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

virtio, vhost, pc: fixes, features

writeable fw cfg blobs which will be used for guest to host
communication
fixes and cleanups all over the place

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Thu 19 Jan 2017 21:08:04 GMT
# gpg:                using RSA key 0x281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream:
  virtio: force VIRTIO_F_IOMMU_PLATFORM
  virtio: fix up max size checks
  vhost: drop VHOST_F_DEVICE_IOTLB
  update-linux-headers.sh: support __bitwise
  virtio_crypto: header update
  pci_regs: update to latest linux
  virtio-mmio: switch to linux headers
  virtio_mmio: add standard header file
  virtio: drop an obsolete comment
  fw-cfg: bump "x-file-slots" to 0x20 for 2.9+ machine types
  pc: Add 2.9 machine-types
  fw-cfg: turn FW_CFG_FILE_SLOTS into a device property
  fw-cfg: support writeable blobs
  vhost_net: device IOTLB support
  virtio: disable notifications again after poll succeeded
  Revert "virtio: turn vq->notification into a nested counter"
  virtio-net: enable ioeventfd even if vhost=off

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

7 files changed, 35 insertions, 7 deletions

diff --git a/include/hw/compat.h b/include/hw/compat.h
index 4fe44d1..34e9b4a 100644
--- a/include/hw/compat.h
+++ b/include/hw/compat.h
@@ -2,7 +2,15 @@
 #define HW_COMPAT_H
 
 #define HW_COMPAT_2_8 \
-    /* empty */
+    {\
+        .driver   = "fw_cfg_mem",\
+        .property = "x-file-slots",\
+        .value    = stringify(0x10),\
+    },{\
+        .driver   = "fw_cfg_io",\
+        .property = "x-file-slots",\
+        .value    = stringify(0x10),\
+    },
 
 #define HW_COMPAT_2_7 \
     {\
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index b22e699..230e9e7 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -375,6 +375,8 @@ int e820_get_num_entries(void);
 bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
 
 #define PC_COMPAT_2_8 \
+    HW_COMPAT_2_8 \
+
 
 #define PC_COMPAT_2_7 \
     HW_COMPAT_2_7 \
diff --git a/include/hw/loader.h b/include/hw/loader.h
index 0c864cf..0dbd8d6 100644
--- a/include/hw/loader.h
+++ b/include/hw/loader.h
@@ -180,7 +180,8 @@ MemoryRegion *rom_add_blob(const char *name, const void *blob, size_t len,
                            size_t max_len, hwaddr addr,
                            const char *fw_file_name,
                            FWCfgReadCallback fw_callback,
-                           void *callback_opaque, AddressSpace *as);
+                           void *callback_opaque, AddressSpace *as,
+                           bool read_only);
 int rom_add_elf_program(const char *name, void *data, size_t datasize,
                         size_t romsize, hwaddr addr, AddressSpace *as);
 int rom_check_and_register_reset(void);
@@ -194,7 +195,7 @@ void hmp_info_roms(Monitor *mon, const QDict *qdict);
 #define rom_add_file_fixed(_f, _a, _i)          \
     rom_add_file(_f, NULL, _a, _i, false, NULL, NULL)
 #define rom_add_blob_fixed(_f, _b, _l, _a)      \
-    rom_add_blob(_f, _b, _l, _l, _a, NULL, NULL, NULL, NULL)
+    rom_add_blob(_f, _b, _l, _l, _a, NULL, NULL, NULL, NULL, true)
 #define rom_add_file_mr(_f, _mr, _i)            \
     rom_add_file(_f, NULL, 0, _i, false, _mr, NULL)
 #define rom_add_file_as(_f, _as, _i)            \
@@ -202,7 +203,7 @@ void hmp_info_roms(Monitor *mon, const QDict *qdict);
 #define rom_add_file_fixed_as(_f, _a, _i, _as)          \
     rom_add_file(_f, NULL, _a, _i, false, NULL, _as)
 #define rom_add_blob_fixed_as(_f, _b, _l, _a, _as)      \
-    rom_add_blob(_f, _b, _l, _l, _a, NULL, NULL, NULL, _as)
+    rom_add_blob(_f, _b, _l, _l, _a, NULL, NULL, NULL, _as, true)
 
 #define PC_ROM_MIN_VGA     0xc0000
 #define PC_ROM_MIN_OPTION  0xc8000
diff --git a/include/hw/nvram/fw_cfg.h b/include/hw/nvram/fw_cfg.h
index 5c27a1f..b980cba 100644
--- a/include/hw/nvram/fw_cfg.h
+++ b/include/hw/nvram/fw_cfg.h
@@ -136,6 +136,7 @@ void fw_cfg_add_file(FWCfgState *s, const char *filename, void *data,
  * @callback_opaque: argument to be passed into callback function
  * @data: pointer to start of item data
  * @len: size of item data
+ * @read_only: is file read only
  *
  * Add a new NAMED fw_cfg item as a raw "blob" of the given size. The data
  * referenced by the starting pointer is only linked, NOT copied, into the
@@ -151,7 +152,7 @@ void fw_cfg_add_file(FWCfgState *s, const char *filename, void *data,
  */
 void fw_cfg_add_file_callback(FWCfgState *s, const char *filename,
                               FWCfgReadCallback callback, void *callback_opaque,
-                              void *data, size_t len);
+                              void *data, size_t len, bool read_only);
 
 /**
  * fw_cfg_modify_file:
diff --git a/include/hw/nvram/fw_cfg_keys.h b/include/hw/nvram/fw_cfg_keys.h
index 0f3e871..b691945 100644
--- a/include/hw/nvram/fw_cfg_keys.h
+++ b/include/hw/nvram/fw_cfg_keys.h
@@ -29,8 +29,7 @@
 #define FW_CFG_FILE_DIR         0x19
 
 #define FW_CFG_FILE_FIRST       0x20
-#define FW_CFG_FILE_SLOTS       0x10
-#define FW_CFG_MAX_ENTRY        (FW_CFG_FILE_FIRST + FW_CFG_FILE_SLOTS)
+#define FW_CFG_FILE_SLOTS_MIN   0x10
 
 #define FW_CFG_WRITE_CHANNEL    0x4000
 #define FW_CFG_ARCH_LOCAL       0x8000
diff --git a/include/hw/virtio/vhost-backend.h b/include/hw/virtio/vhost-backend.h
index 30abc11..c3cf4a7 100644
--- a/include/hw/virtio/vhost-backend.h
+++ b/include/hw/virtio/vhost-backend.h
@@ -11,6 +11,8 @@
 #ifndef VHOST_BACKEND_H
 #define VHOST_BACKEND_H
 
+#include "exec/memory.h"
+
 typedef enum VhostBackendType {
     VHOST_BACKEND_TYPE_NONE = 0,
     VHOST_BACKEND_TYPE_KERNEL = 1,
@@ -77,6 +79,14 @@ typedef bool (*vhost_backend_can_merge_op)(struct vhost_dev *dev,
 typedef int (*vhost_vsock_set_guest_cid_op)(struct vhost_dev *dev,
                                             uint64_t guest_cid);
 typedef int (*vhost_vsock_set_running_op)(struct vhost_dev *dev, int start);
+typedef void (*vhost_set_iotlb_callback_op)(struct vhost_dev *dev,
+                                           int enabled);
+typedef int (*vhost_update_device_iotlb_op)(struct vhost_dev *dev,
+                                            uint64_t iova, uint64_t uaddr,
+                                            uint64_t len,
+                                            IOMMUAccessFlags perm);
+typedef int (*vhost_invalidate_device_iotlb_op)(struct vhost_dev *dev,
+                                                uint64_t iova, uint64_t len);
 
 typedef struct VhostOps {
     VhostBackendType backend_type;
@@ -109,6 +119,9 @@ typedef struct VhostOps {
     vhost_backend_can_merge_op vhost_backend_can_merge;
     vhost_vsock_set_guest_cid_op vhost_vsock_set_guest_cid;
     vhost_vsock_set_running_op vhost_vsock_set_running;
+    vhost_set_iotlb_callback_op vhost_set_iotlb_callback;
+    vhost_update_device_iotlb_op vhost_update_device_iotlb;
+    vhost_invalidate_device_iotlb_op vhost_invalidate_device_iotlb;
 } VhostOps;
 
 extern const VhostOps user_ops;
diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h
index 1fe5aad..52f633e 100644
--- a/include/hw/virtio/vhost.h
+++ b/include/hw/virtio/vhost.h
@@ -21,6 +21,7 @@ struct vhost_virtqueue {
     unsigned long long used_phys;
     unsigned used_size;
     EventNotifier masked_notifier;
+    struct vhost_dev *dev;
 };
 
 typedef unsigned long vhost_log_chunk_t;
@@ -38,6 +39,7 @@ struct vhost_log {
 
 struct vhost_memory;
 struct vhost_dev {
+    VirtIODevice *vdev;
     MemoryListener memory_listener;
     struct vhost_memory *mem;
     int n_mem_sections;
@@ -62,6 +64,7 @@ struct vhost_dev {
     void *opaque;
     struct vhost_log *log;
     QLIST_ENTRY(vhost_dev) entry;
+    IOMMUNotifier n;
 };
 
 int vhost_dev_init(struct vhost_dev *hdev, void *opaque,
@@ -91,4 +94,5 @@ bool vhost_has_free_slot(void);
 int vhost_net_set_backend(struct vhost_dev *hdev,
                           struct vhost_vring_file *file);
 
+void vhost_device_iotlb_miss(struct vhost_dev *dev, uint64_t iova, int write);
 #endif