Merge branch 'drm-for-2.6.35' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6

* 'drm-for-2.6.35' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (207 commits)
  drm/radeon/kms/pm/r600: select the mid clock mode for single head low profile
  drm/radeon: fix power supply kconfig interaction.
  drm/radeon/kms: record object that have been list reserved
  drm/radeon: AGP memory is only I/O if the aperture can be mapped by the CPU.
  drm/radeon/kms: don't default display priority to high on rs4xx
  drm/edid: fix typo in 1600x1200@75 mode
  drm/nouveau: fix i2c-related init table handlers
  drm/nouveau: support init table i2c device identifier 0x81
  drm/nouveau: ensure we've parsed i2c table entry for INIT_*I2C* handlers
  drm/nouveau: display error message for any failed init table opcode
  drm/nouveau: fix init table handlers to return proper error codes
  drm/nv50: support fractional feedback divider on newer chips
  drm/nv50: fix monitor detection on certain chipsets
  drm/nv50: store full dcb i2c entry from vbios
  drm/nv50: fix suspend/resume with DP outputs
  drm/nv50: output calculated crtc pll when debugging on
  drm/nouveau: dump pll limits entries when debugging is on
  drm/nouveau: bios parser fixes for eDP boards
  drm/nouveau: fix a nouveau_bo dereference after it's been destroyed
  drm/nv40: remove some completed ctxprog TODOs
  ...

3 files changed, 151 insertions, 26 deletions

diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h
index 81eb9f45883c..267a86c74e2e 100644
--- a/include/drm/ttm/ttm_bo_api.h
+++ b/include/drm/ttm/ttm_bo_api.h
@@ -66,6 +66,26 @@ struct ttm_placement {
         const uint32_t  *busy_placement;
 };
 
+/**
+ * struct ttm_bus_placement
+ *
+ * @addr:               mapped virtual address
+ * @base:               bus base address
+ * @is_iomem:           is this io memory ?
+ * @size:               size in byte
+ * @offset:             offset from the base address
+ *
+ * Structure indicating the bus placement of an object.
+ */
+struct ttm_bus_placement {
+        void            *addr;
+        unsigned long   base;
+        unsigned long   size;
+        unsigned long   offset;
+        bool            is_iomem;
+        bool            io_reserved;
+};
+
 
 /**
  * struct ttm_mem_reg
@@ -75,6 +95,7 @@ struct ttm_placement {
  * @num_pages: Actual size of memory region in pages.
  * @page_alignment: Page alignment.
  * @placement: Placement flags.
+ * @bus: Placement on io bus accessible to the CPU
  *
  * Structure indicating the placement and space resources used by a
  * buffer object.
@@ -87,6 +108,7 @@ struct ttm_mem_reg {
         uint32_t page_alignment;
         uint32_t mem_type;
         uint32_t placement;
+        struct ttm_bus_placement bus;
 };
 
 /**
@@ -274,6 +296,7 @@ struct ttm_bo_kmap_obj {
                 ttm_bo_map_kmap         = 3,
                 ttm_bo_map_premapped    = 4 | TTM_BO_MAP_IOMEM_MASK,
         } bo_kmap_type;
+        struct ttm_buffer_object *bo;
 };
 
 /**
@@ -313,7 +336,8 @@ extern int ttm_bo_wait(struct ttm_buffer_object *bo, bool lazy,
  * @bo: The buffer object.
  * @placement: Proposed placement for the buffer object.
  * @interruptible: Sleep interruptible if sleeping.
- * @no_wait: Return immediately if the buffer is busy.
+ * @no_wait_reserve: Return immediately if other buffers are busy.
+ * @no_wait_gpu: Return immediately if the GPU is busy.
  *
  * Changes placement and caching policy of the buffer object
  * according proposed placement.
@@ -325,7 +349,8 @@ extern int ttm_bo_wait(struct ttm_buffer_object *bo, bool lazy,
  */
 extern int ttm_bo_validate(struct ttm_buffer_object *bo,
                                 struct ttm_placement *placement,
-                                bool interruptible, bool no_wait);
+                                bool interruptible, bool no_wait_reserve,
+                                bool no_wait_gpu);
 
 /**
  * ttm_bo_unref
@@ -337,6 +362,23 @@ extern int ttm_bo_validate(struct ttm_buffer_object *bo,
 extern void ttm_bo_unref(struct ttm_buffer_object **bo);
 
 /**
+ * ttm_bo_lock_delayed_workqueue
+ *
+ * Prevent the delayed workqueue from running.
+ * Returns
+ * True if the workqueue was queued at the time
+ */
+extern int ttm_bo_lock_delayed_workqueue(struct ttm_bo_device *bdev);
+
+/**
+ * ttm_bo_unlock_delayed_workqueue
+ *
+ * Allows the delayed workqueue to run.
+ */
+extern void ttm_bo_unlock_delayed_workqueue(struct ttm_bo_device *bdev,
+                                            int resched);
+
+/**
  * ttm_bo_synccpu_write_grab
  *
  * @bo: The buffer object:
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index 6b9db917e717..0ea602da43e7 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -176,8 +176,6 @@ struct ttm_tt {
 
 #define TTM_MEMTYPE_FLAG_FIXED         (1 << 0) /* Fixed (on-card) PCI memory */
 #define TTM_MEMTYPE_FLAG_MAPPABLE      (1 << 1) /* Memory mappable */
-#define TTM_MEMTYPE_FLAG_NEEDS_IOREMAP (1 << 2) /* Fixed memory needs ioremap
-                                                   before kernel access. */
 #define TTM_MEMTYPE_FLAG_CMA           (1 << 3) /* Can't map aperture */
 
 /**
@@ -189,13 +187,6 @@ struct ttm_tt {
  * managed by this memory type.
  * @gpu_offset: If used, the GPU offset of the first managed page of
  * fixed memory or the first managed location in an aperture.
- * @io_offset: The io_offset of the first managed page of IO memory or
- * the first managed location in an aperture. For TTM_MEMTYPE_FLAG_CMA
- * memory, this should be set to NULL.
- * @io_size: The size of a managed IO region (fixed memory or aperture).
- * @io_addr: Virtual kernel address if the io region is pre-mapped. For
- * TTM_MEMTYPE_FLAG_NEEDS_IOREMAP there is no pre-mapped io map and
- * @io_addr should be set to NULL.
  * @size: Size of the managed region.
  * @available_caching: A mask of available caching types, TTM_PL_FLAG_XX,
  * as defined in ttm_placement_common.h
@@ -221,9 +212,6 @@ struct ttm_mem_type_manager {
         bool use_type;
         uint32_t flags;
         unsigned long gpu_offset;
-        unsigned long io_offset;
-        unsigned long io_size;
-        void *io_addr;
         uint64_t size;
         uint32_t available_caching;
         uint32_t default_caching;
@@ -311,7 +299,8 @@ struct ttm_bo_driver {
          */
         int (*move) (struct ttm_buffer_object *bo,
                      bool evict, bool interruptible,
-                     bool no_wait, struct ttm_mem_reg *new_mem);
+                     bool no_wait_reserve, bool no_wait_gpu,
+                     struct ttm_mem_reg *new_mem);
 
         /**
          * struct ttm_bo_driver_member verify_access
@@ -351,12 +340,21 @@ struct ttm_bo_driver {
                             struct ttm_mem_reg *new_mem);
         /* notify the driver we are taking a fault on this BO
          * and have reserved it */
-        void (*fault_reserve_notify)(struct ttm_buffer_object *bo);
+        int (*fault_reserve_notify)(struct ttm_buffer_object *bo);
 
         /**
          * notify the driver that we're about to swap out this bo
          */
         void (*swap_notify) (struct ttm_buffer_object *bo);
+
+        /**
+         * Driver callback on when mapping io memory (for bo_move_memcpy
+         * for instance). TTM will take care to call io_mem_free whenever
+         * the mapping is not use anymore. io_mem_reserve & io_mem_free
+         * are balanced.
+         */
+        int (*io_mem_reserve)(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem);
+        void (*io_mem_free)(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem);
 };
 
 /**
@@ -633,7 +631,8 @@ extern bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev,
  * @proposed_placement: Proposed new placement for the buffer object.
  * @mem: A struct ttm_mem_reg.
  * @interruptible: Sleep interruptible when sliping.
- * @no_wait: Don't sleep waiting for space to become available.
+ * @no_wait_reserve: Return immediately if other buffers are busy.
+ * @no_wait_gpu: Return immediately if the GPU is busy.
  *
  * Allocate memory space for the buffer object pointed to by @bo, using
  * the placement flags in @mem, potentially evicting other idle buffer objects.
@@ -647,7 +646,8 @@ extern bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev,
 extern int ttm_bo_mem_space(struct ttm_buffer_object *bo,
                                 struct ttm_placement *placement,
                                 struct ttm_mem_reg *mem,
-                                bool interruptible, bool no_wait);
+                                bool interruptible,
+                                bool no_wait_reserve, bool no_wait_gpu);
 /**
  * ttm_bo_wait_for_cpu
  *
@@ -682,6 +682,11 @@ extern int ttm_bo_pci_offset(struct ttm_bo_device *bdev,
                              unsigned long *bus_offset,
                              unsigned long *bus_size);
 
+extern int ttm_mem_io_reserve(struct ttm_bo_device *bdev,
+                                struct ttm_mem_reg *mem);
+extern void ttm_mem_io_free(struct ttm_bo_device *bdev,
+                                struct ttm_mem_reg *mem);
+
 extern void ttm_bo_global_release(struct ttm_global_reference *ref);
 extern int ttm_bo_global_init(struct ttm_global_reference *ref);
 
@@ -798,7 +803,8 @@ extern int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo,
  *
  * @bo: A pointer to a struct ttm_buffer_object.
  * @evict: 1: This is an eviction. Don't try to pipeline.
- * @no_wait: Never sleep, but rather return with -EBUSY.
+ * @no_wait_reserve: Return immediately if other buffers are busy.
+ * @no_wait_gpu: Return immediately if the GPU is busy.
  * @new_mem: struct ttm_mem_reg indicating where to move.
  *
  * Optimized move function for a buffer object with both old and
@@ -812,15 +818,16 @@ extern int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo,
  */
 
 extern int ttm_bo_move_ttm(struct ttm_buffer_object *bo,
-                           bool evict, bool no_wait,
-                           struct ttm_mem_reg *new_mem);
+                           bool evict, bool no_wait_reserve,
+                           bool no_wait_gpu, struct ttm_mem_reg *new_mem);
 
 /**
  * ttm_bo_move_memcpy
  *
  * @bo: A pointer to a struct ttm_buffer_object.
  * @evict: 1: This is an eviction. Don't try to pipeline.
- * @no_wait: Never sleep, but rather return with -EBUSY.
+ * @no_wait_reserve: Return immediately if other buffers are busy.
+ * @no_wait_gpu: Return immediately if the GPU is busy.
  * @new_mem: struct ttm_mem_reg indicating where to move.
  *
  * Fallback move function for a mappable buffer object in mappable memory.
@@ -834,8 +841,8 @@ extern int ttm_bo_move_ttm(struct ttm_buffer_object *bo,
  */
 
 extern int ttm_bo_move_memcpy(struct ttm_buffer_object *bo,
-                              bool evict,
-                              bool no_wait, struct ttm_mem_reg *new_mem);
+                              bool evict, bool no_wait_reserve,
+                              bool no_wait_gpu, struct ttm_mem_reg *new_mem);
 
 /**
  * ttm_bo_free_old_node
@@ -854,7 +861,8 @@ extern void ttm_bo_free_old_node(struct ttm_buffer_object *bo);
  * @sync_obj_arg: An argument to pass to the sync object idle / wait
  * functions.
  * @evict: This is an evict move. Don't return until the buffer is idle.
- * @no_wait: Never sleep, but rather return with -EBUSY.
+ * @no_wait_reserve: Return immediately if other buffers are busy.
+ * @no_wait_gpu: Return immediately if the GPU is busy.
  * @new_mem: struct ttm_mem_reg indicating where to move.
  *
  * Accelerated move function to be called when an accelerated move
@@ -868,7 +876,8 @@ extern void ttm_bo_free_old_node(struct ttm_buffer_object *bo);
 extern int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
                                      void *sync_obj,
                                      void *sync_obj_arg,
-                                     bool evict, bool no_wait,
+                                     bool evict, bool no_wait_reserve,
+                                     bool no_wait_gpu,
                                      struct ttm_mem_reg *new_mem);
 /**
  * ttm_io_prot
diff --git a/include/drm/ttm/ttm_page_alloc.h b/include/drm/ttm/ttm_page_alloc.h
new file mode 100644
index 000000000000..8bb4de567b2c
--- /dev/null
+++ b/include/drm/ttm/ttm_page_alloc.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) Red Hat Inc.
+
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sub license,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Dave Airlie <airlied@redhat.com>
+ *          Jerome Glisse <jglisse@redhat.com>
+ */
+#ifndef TTM_PAGE_ALLOC
+#define TTM_PAGE_ALLOC
+
+#include "ttm_bo_driver.h"
+#include "ttm_memory.h"
+
+/**
+ * Get count number of pages from pool to pages list.
+ *
+ * @pages: heado of empty linked list where pages are filled.
+ * @flags: ttm flags for page allocation.
+ * @cstate: ttm caching state for the page.
+ * @count: number of pages to allocate.
+ */
+int ttm_get_pages(struct list_head *pages,
+                  int flags,
+                  enum ttm_caching_state cstate,
+                  unsigned count);
+/**
+ * Put linked list of pages to pool.
+ *
+ * @pages: list of pages to free.
+ * @page_count: number of pages in the list. Zero can be passed for unknown
+ * count.
+ * @flags: ttm flags for page allocation.
+ * @cstate: ttm caching state.
+ */
+void ttm_put_pages(struct list_head *pages,
+                   unsigned page_count,
+                   int flags,
+                   enum ttm_caching_state cstate);
+/**
+ * Initialize pool allocator.
+ *
+ * Pool allocator is internaly reference counted so it can be initialized
+ * multiple times but ttm_page_alloc_fini has to be called same number of
+ * times.
+ */
+int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages);
+/**
+ * Free pool allocator.
+ */
+void ttm_page_alloc_fini(void);
+
+/**
+ * Output the state of pools to debugfs file
+ */
+extern int ttm_page_alloc_debugfs(struct seq_file *m, void *data);
+#endif