Merge tag 'v3.4-rc3' into staging/for_v3.5

* tag 'v3.4-rc3': (3755 commits)
  Linux 3.4-rc3
  x86-32: fix up strncpy_from_user() sign error
  ARM: 7386/1: jump_label: fixup for rename to static_key
  ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE
  ARM: 7382/1: mm: truncate memory banks to fit in 4GB space for classic MMU
  ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus
  PCI: Fix regression in pci_restore_state(), v3
  SCSI: Fix error handling when no ULD is attached
  ARM: OMAP: clock: cleanup CPUfreq leftovers, fix build errors
  ARM: dts: remove blank interrupt-parent properties
  ARM: EXYNOS: Fix Kconfig dependencies for device tree enabled machine files
  do not export kernel's NULL #define to userspace
  ARM: EXYNOS: Remove broken config values for touchscren for NURI board
  ARM: EXYNOS: set fix xusbxti clock for NURI and Universal210 boards
  ARM: EXYNOS: fix regulator name for NURI board
  ARM: SAMSUNG: make SAMSUNG_PM_DEBUG select DEBUG_LL
  cpufreq: OMAP: fix build errors: depends on ARCH_OMAP2PLUS
  sparc64: Eliminate obsolete __handle_softirq() function
  sparc64: Fix bootup crash on sun4v.
  ARM: msm: Fix section mismatches in proc_comm.c
  ...

5 files changed, 83 insertions, 3 deletions

diff --git a/include/drm/drm.h b/include/drm/drm.h
index 34a7b89fd006..64ff02d5b730 100644
--- a/include/drm/drm.h
+++ b/include/drm/drm.h
@@ -617,6 +617,17 @@ struct drm_get_cap {
 	__u64 value;
 };
 
+#define DRM_CLOEXEC O_CLOEXEC
+struct drm_prime_handle {
+	__u32 handle;
+
+	/** Flags.. only applicable for handle->fd */
+	__u32 flags;
+
+	/** Returned dmabuf file descriptor */
+	__s32 fd;
+};
+
 #include "drm_mode.h"
 
 #define DRM_IOCTL_BASE			'd'
@@ -673,7 +684,8 @@ struct drm_get_cap {
 #define DRM_IOCTL_UNLOCK		DRM_IOW( 0x2b, struct drm_lock)
 #define DRM_IOCTL_FINISH		DRM_IOW( 0x2c, struct drm_lock)
 
-#define DRM_IOCTL_GEM_PRIME_OPEN        DRM_IOWR(0x2e, struct drm_gem_open)
+#define DRM_IOCTL_PRIME_HANDLE_TO_FD    DRM_IOWR(0x2d, struct drm_prime_handle)
+#define DRM_IOCTL_PRIME_FD_TO_HANDLE    DRM_IOWR(0x2e, struct drm_prime_handle)
 
 #define DRM_IOCTL_AGP_ACQUIRE		DRM_IO(  0x30)
 #define DRM_IOCTL_AGP_RELEASE		DRM_IO(  0x31)
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 574bd1c81ebd..dd731043fecd 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -91,6 +91,7 @@ struct drm_device;
 #define DRM_UT_CORE 		0x01
 #define DRM_UT_DRIVER		0x02
 #define DRM_UT_KMS		0x04
+#define DRM_UT_PRIME		0x08
 /*
  * Three debug levels are defined.
  * drm_core, drm_driver, drm_kms
@@ -150,6 +151,7 @@ int drm_err(const char *func, const char *format, ...);
 #define DRIVER_IRQ_VBL2    0x800
 #define DRIVER_GEM         0x1000
 #define DRIVER_MODESET     0x2000
+#define DRIVER_PRIME       0x4000
 
 #define DRIVER_BUS_PCI 0x1
 #define DRIVER_BUS_PLATFORM 0x2
@@ -215,6 +217,11 @@ int drm_err(const char *func, const char *format, ...);
 		drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, 		\
 					 __func__, fmt, ##args);	\
 	} while (0)
+#define DRM_DEBUG_PRIME(fmt, args...)					\
+	do {								\
+		drm_ut_debug_printk(DRM_UT_PRIME, DRM_NAME,		\
+					__func__, fmt, ##args);		\
+	} while (0)
 #define DRM_LOG(fmt, args...)						\
 	do {								\
 		drm_ut_debug_printk(DRM_UT_CORE, NULL,			\
@@ -238,6 +245,7 @@ int drm_err(const char *func, const char *format, ...);
 #else
 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
 #define DRM_DEBUG_KMS(fmt, args...)	do { } while (0)
+#define DRM_DEBUG_PRIME(fmt, args...)	do { } while (0)
 #define DRM_DEBUG(fmt, arg...)		 do { } while (0)
 #define DRM_LOG(fmt, arg...)		do { } while (0)
 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
@@ -410,6 +418,12 @@ struct drm_pending_event {
 	void (*destroy)(struct drm_pending_event *event);
 };
 
+/* initial implementaton using a linked list - todo hashtab */
+struct drm_prime_file_private {
+	struct list_head head;
+	struct mutex lock;
+};
+
 /** File private data */
 struct drm_file {
 	int authenticated;
@@ -437,6 +451,8 @@ struct drm_file {
 	wait_queue_head_t event_wait;
 	struct list_head event_list;
 	int event_space;
+
+	struct drm_prime_file_private prime;
 };
 
 /** Wait queue */
@@ -652,6 +668,12 @@ struct drm_gem_object {
 	uint32_t pending_write_domain;
 
 	void *driver_private;
+
+	/* dma buf exported from this GEM object */
+	struct dma_buf *export_dma_buf;
+
+	/* dma buf attachment backing this object */
+	struct dma_buf_attachment *import_attach;
 };
 
 #include "drm_crtc.h"
@@ -890,6 +912,20 @@ struct drm_driver {
 	int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
 	void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
 
+	/* prime: */
+	/* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
+	int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv,
+				uint32_t handle, uint32_t flags, int *prime_fd);
+	/* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
+	int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv,
+				int prime_fd, uint32_t *handle);
+	/* export GEM -> dmabuf */
+	struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
+				struct drm_gem_object *obj, int flags);
+	/* import dmabuf -> GEM */
+	struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
+				struct dma_buf *dma_buf);
+
 	/* vga arb irq handler */
 	void (*vgaarb_irq)(struct drm_device *dev, bool state);
 
@@ -1509,6 +1545,32 @@ extern int drm_vblank_info(struct seq_file *m, void *data);
 extern int drm_clients_info(struct seq_file *m, void* data);
 extern int drm_gem_name_info(struct seq_file *m, void *data);
 
+
+extern int drm_gem_prime_handle_to_fd(struct drm_device *dev,
+		struct drm_file *file_priv, uint32_t handle, uint32_t flags,
+		int *prime_fd);
+extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
+		struct drm_file *file_priv, int prime_fd, uint32_t *handle);
+
+extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data,
+					struct drm_file *file_priv);
+extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data,
+					struct drm_file *file_priv);
+
+extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, int nr_pages);
+extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
+
+
+void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv);
+void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv);
+int drm_prime_add_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t handle);
+int drm_prime_lookup_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t *handle);
+void drm_prime_remove_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf);
+
+int drm_prime_add_dma_buf(struct drm_device *dev, struct drm_gem_object *obj);
+int drm_prime_lookup_obj(struct drm_device *dev, struct dma_buf *buf,
+			 struct drm_gem_object **obj);
+
 #if DRM_DEBUG_CODE
 extern int drm_vma_info(struct seq_file *m, void *data);
 #endif
diff --git a/include/drm/exynos_drm.h b/include/drm/exynos_drm.h
index 3963116083ae..e478de4e5d56 100644
--- a/include/drm/exynos_drm.h
+++ b/include/drm/exynos_drm.h
@@ -85,7 +85,7 @@ struct drm_exynos_gem_mmap {
 struct drm_exynos_vidi_connection {
 	unsigned int connection;
 	unsigned int extensions;
-	uint64_t *edid;
+	uint64_t edid;
 };
 
 struct drm_exynos_plane_set_zpos {
@@ -96,7 +96,8 @@ struct drm_exynos_plane_set_zpos {
 /* memory type definitions. */
 enum e_drm_exynos_gem_mem_type {
 	/* Physically Non-Continuous memory. */
-	EXYNOS_BO_NONCONTIG	= 1 << 0
+	EXYNOS_BO_NONCONTIG	= 1 << 0,
+	EXYNOS_BO_MASK		= EXYNOS_BO_NONCONTIG
 };
 
 #define DRM_EXYNOS_GEM_CREATE		0x00
diff --git a/include/drm/intel-gtt.h b/include/drm/intel-gtt.h
index 0a0001b9dc78..923afb5dcf0c 100644
--- a/include/drm/intel-gtt.h
+++ b/include/drm/intel-gtt.h
@@ -44,4 +44,8 @@ void intel_gtt_insert_pages(unsigned int first_entry, unsigned int num_entries,
 /* flag for GFDT type */
 #define AGP_USER_CACHED_MEMORY_GFDT (1 << 3)
 
+#ifdef CONFIG_INTEL_IOMMU
+extern int intel_iommu_gfx_mapped;
+#endif
+
 #endif
diff --git a/include/drm/ttm/ttm_memory.h b/include/drm/ttm/ttm_memory.h
index 26c1f78d136f..d6d1da468c97 100644
--- a/include/drm/ttm/ttm_memory.h
+++ b/include/drm/ttm/ttm_memory.h
@@ -30,6 +30,7 @@
 
 #include <linux/workqueue.h>
 #include <linux/spinlock.h>
+#include <linux/bug.h>
 #include <linux/wait.h>
 #include <linux/errno.h>
 #include <linux/kobject.h>