Merge Linus master to drm-next

linux-next conflict reported needed resolution.

Conflicts:
	drivers/gpu/drm/drm_crtc.c
	drivers/gpu/drm/drm_edid.c
	drivers/gpu/drm/i915/intel_sdvo.c
	drivers/gpu/drm/radeon/radeon_ttm.c
	drivers/gpu/drm/ttm/ttm_bo.c

4 files changed, 135 insertions, 36 deletions

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 0d0b1b7afbcf..fa87ccbcc6ce 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -43,7 +43,6 @@
 #define TTM_BO_HASH_ORDER 13
 
 static int ttm_bo_setup_vm(struct ttm_buffer_object *bo);
-static void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo);
 static int ttm_bo_swapout(struct ttm_mem_shrink *shrink);
 static void ttm_bo_global_kobj_release(struct kobject *kobj);
 
@@ -259,6 +258,9 @@ static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc)
         TTM_ASSERT_LOCKED(&bo->mutex);
         bo->ttm = NULL;
 
+        if (bdev->need_dma32)
+                page_flags |= TTM_PAGE_FLAG_DMA32;
+
         switch (bo->type) {
         case ttm_bo_type_device:
                 if (zero_alloc)
@@ -339,6 +341,9 @@ static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo,
 
         }
 
+        if (bdev->driver->move_notify)
+                bdev->driver->move_notify(bo, mem);
+
         if (!(old_man->flags & TTM_MEMTYPE_FLAG_FIXED) &&
             !(new_man->flags & TTM_MEMTYPE_FLAG_FIXED))
                 ret = ttm_bo_move_ttm(bo, evict, no_wait, mem);
@@ -694,31 +699,52 @@ retry_pre_get:
         return 0;
 }
 
+static uint32_t ttm_bo_select_caching(struct ttm_mem_type_manager *man,
+                                      uint32_t cur_placement,
+                                      uint32_t proposed_placement)
+{
+        uint32_t caching = proposed_placement & TTM_PL_MASK_CACHING;
+        uint32_t result = proposed_placement & ~TTM_PL_MASK_CACHING;
+
+        /**
+         * Keep current caching if possible.
+         */
+
+        if ((cur_placement & caching) != 0)
+                result |= (cur_placement & caching);
+        else if ((man->default_caching & caching) != 0)
+                result |= man->default_caching;
+        else if ((TTM_PL_FLAG_CACHED & caching) != 0)
+                result |= TTM_PL_FLAG_CACHED;
+        else if ((TTM_PL_FLAG_WC & caching) != 0)
+                result |= TTM_PL_FLAG_WC;
+        else if ((TTM_PL_FLAG_UNCACHED & caching) != 0)
+                result |= TTM_PL_FLAG_UNCACHED;
+
+        return result;
+}
+
+
 static bool ttm_bo_mt_compatible(struct ttm_mem_type_manager *man,
                                  bool disallow_fixed,
                                  uint32_t mem_type,
-                                 uint32_t mask, uint32_t *res_mask)
+                                 uint32_t proposed_placement,
+                                 uint32_t *masked_placement)
 {
         uint32_t cur_flags = ttm_bo_type_flags(mem_type);
 
         if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && disallow_fixed)
                 return false;
 
-        if ((cur_flags & mask & TTM_PL_MASK_MEM) == 0)
+        if ((cur_flags & proposed_placement & TTM_PL_MASK_MEM) == 0)
                 return false;
 
-        if ((mask & man->available_caching) == 0)
+        if ((proposed_placement & man->available_caching) == 0)
                 return false;
-        if (mask & man->default_caching)
-                cur_flags |= man->default_caching;
-        else if (mask & TTM_PL_FLAG_CACHED)
-                cur_flags |= TTM_PL_FLAG_CACHED;
-        else if (mask & TTM_PL_FLAG_WC)
-                cur_flags |= TTM_PL_FLAG_WC;
-        else
-                cur_flags |= TTM_PL_FLAG_UNCACHED;
 
-        *res_mask = cur_flags;
+        cur_flags |= (proposed_placement & man->available_caching);
+
+        *masked_placement = cur_flags;
         return true;
 }
 
@@ -763,6 +789,9 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
                 if (!type_ok)
                         continue;
 
+                cur_flags = ttm_bo_select_caching(man, bo->mem.placement,
+                                                  cur_flags);
+
                 if (mem_type == TTM_PL_SYSTEM)
                         break;
 
@@ -819,6 +848,9 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
                                           proposed_placement, &cur_flags))
                         continue;
 
+                cur_flags = ttm_bo_select_caching(man, bo->mem.placement,
+                                                  cur_flags);
+
                 ret = ttm_bo_mem_force_space(bdev, mem, mem_type,
                                              interruptible, no_wait);
 
@@ -1194,13 +1226,14 @@ static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev,
 int ttm_bo_clean_mm(struct ttm_bo_device *bdev, unsigned mem_type)
 {
         struct ttm_bo_global *glob = bdev->glob;
-        struct ttm_mem_type_manager *man = &bdev->man[mem_type];
+        struct ttm_mem_type_manager *man;
         int ret = -EINVAL;
 
         if (mem_type >= TTM_NUM_MEM_TYPES) {
                 printk(KERN_ERR TTM_PFX "Illegal memory type %d\n", mem_type);
                 return ret;
         }
+        man = &bdev->man[mem_type];
 
         if (!man->has_type) {
                 printk(KERN_ERR TTM_PFX "Trying to take down uninitialized "
@@ -1417,7 +1450,8 @@ EXPORT_SYMBOL(ttm_bo_device_release);
 int ttm_bo_device_init(struct ttm_bo_device *bdev,
                        struct ttm_bo_global *glob,
                        struct ttm_bo_driver *driver,
-                       uint64_t file_page_offset)
+                       uint64_t file_page_offset,
+                       bool need_dma32)
 {
         int ret = -EINVAL;
 
@@ -1446,6 +1480,7 @@ int ttm_bo_device_init(struct ttm_bo_device *bdev,
         INIT_LIST_HEAD(&bdev->ddestroy);
         bdev->dev_mapping = NULL;
         bdev->glob = glob;
+        bdev->need_dma32 = need_dma32;
 
         mutex_lock(&glob->device_list_mutex);
         list_add_tail(&bdev->device_list, &glob->device_list);
@@ -1511,6 +1546,7 @@ void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo)
 
         unmap_mapping_range(bdev->dev_mapping, offset, holelen, 1);
 }
+EXPORT_SYMBOL(ttm_bo_unmap_virtual);
 
 static void ttm_bo_vm_insert_rb(struct ttm_buffer_object *bo)
 {
@@ -1632,6 +1668,10 @@ int ttm_bo_wait(struct ttm_buffer_object *bo,
                         driver->sync_obj_unref(&sync_obj);
                         driver->sync_obj_unref(&tmp_obj);
                         spin_lock(&bo->lock);
+                } else {
+                        spin_unlock(&bo->lock);
+                        driver->sync_obj_unref(&sync_obj);
+                        spin_lock(&bo->lock);
                 }
         }
         return 0;
diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c
index 12cd47aa18ce..c70927ecda21 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_util.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
@@ -136,7 +136,8 @@ static int ttm_copy_io_page(void *dst, void *src, unsigned long page)
 }
 
 static int ttm_copy_io_ttm_page(struct ttm_tt *ttm, void *src,
-                                unsigned long page)
+                                unsigned long page,
+                                pgprot_t prot)
 {
         struct page *d = ttm_tt_get_page(ttm, page);
         void *dst;
@@ -145,17 +146,35 @@ static int ttm_copy_io_ttm_page(struct ttm_tt *ttm, void *src,
                 return -ENOMEM;
 
         src = (void *)((unsigned long)src + (page << PAGE_SHIFT));
-        dst = kmap(d);
+
+#ifdef CONFIG_X86
+        dst = kmap_atomic_prot(d, KM_USER0, prot);
+#else
+        if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL))
+                dst = vmap(&d, 1, 0, prot);
+        else
+                dst = kmap(d);
+#endif
         if (!dst)
                 return -ENOMEM;
 
         memcpy_fromio(dst, src, PAGE_SIZE);
-        kunmap(d);
+
+#ifdef CONFIG_X86
+        kunmap_atomic(dst, KM_USER0);
+#else
+        if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL))
+                vunmap(dst);
+        else
+                kunmap(d);
+#endif
+
         return 0;
 }
 
 static int ttm_copy_ttm_io_page(struct ttm_tt *ttm, void *dst,
-                                unsigned long page)
+                                unsigned long page,
+                                pgprot_t prot)
 {
         struct page *s = ttm_tt_get_page(ttm, page);
         void *src;
@@ -164,12 +183,28 @@ static int ttm_copy_ttm_io_page(struct ttm_tt *ttm, void *dst,
                 return -ENOMEM;
 
         dst = (void *)((unsigned long)dst + (page << PAGE_SHIFT));
-        src = kmap(s);
+#ifdef CONFIG_X86
+        src = kmap_atomic_prot(s, KM_USER0, prot);
+#else
+        if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL))
+                src = vmap(&s, 1, 0, prot);
+        else
+                src = kmap(s);
+#endif
         if (!src)
                 return -ENOMEM;
 
         memcpy_toio(dst, src, PAGE_SIZE);
-        kunmap(s);
+
+#ifdef CONFIG_X86
+        kunmap_atomic(src, KM_USER0);
+#else
+        if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL))
+                vunmap(src);
+        else
+                kunmap(s);
+#endif
+
         return 0;
 }
 
@@ -214,11 +249,17 @@ int ttm_bo_move_memcpy(struct ttm_buffer_object *bo,
 
         for (i = 0; i < new_mem->num_pages; ++i) {
                 page = i * dir + add;
-                if (old_iomap == NULL)
-                        ret = ttm_copy_ttm_io_page(ttm, new_iomap, page);
-                else if (new_iomap == NULL)
-                        ret = ttm_copy_io_ttm_page(ttm, old_iomap, page);
-                else
+                if (old_iomap == NULL) {
+                        pgprot_t prot = ttm_io_prot(old_mem->placement,
+                                                    PAGE_KERNEL);
+                        ret = ttm_copy_ttm_io_page(ttm, new_iomap, page,
+                                                   prot);
+                } else if (new_iomap == NULL) {
+                        pgprot_t prot = ttm_io_prot(new_mem->placement,
+                                                    PAGE_KERNEL);
+                        ret = ttm_copy_io_ttm_page(ttm, old_iomap, page,
+                                                   prot);
+                } else
                         ret = ttm_copy_io_page(new_iomap, old_iomap, page);
                 if (ret)
                         goto out1;
@@ -509,8 +550,8 @@ int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
         if (evict) {
                 ret = ttm_bo_wait(bo, false, false, false);
                 spin_unlock(&bo->lock);
-                driver->sync_obj_unref(&bo->sync_obj);
-
+                if (tmp_obj)
+                        driver->sync_obj_unref(&tmp_obj);
                 if (ret)
                         return ret;
 
@@ -532,6 +573,8 @@ int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
 
                 set_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags);
                 spin_unlock(&bo->lock);
+                if (tmp_obj)
+                        driver->sync_obj_unref(&tmp_obj);
 
                 ret = ttm_buffer_object_transfer(bo, &ghost_obj);
                 if (ret)
diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c
index 40b75032ea47..33de7637c0c6 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_vm.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c
@@ -101,6 +101,9 @@ static int ttm_bo_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
                 return VM_FAULT_NOPAGE;
         }
 
+        if (bdev->driver->fault_reserve_notify)
+                bdev->driver->fault_reserve_notify(bo);
+
         /*
          * Wait for buffer data in transit, due to a pipelined
          * move.
@@ -327,7 +330,7 @@ ssize_t ttm_bo_io(struct ttm_bo_device *bdev, struct file *filp,
                 goto out_unref;
 
         kmap_offset = dev_offset - bo->vm_node->start;
-        if (unlikely(kmap_offset) >= bo->num_pages) {
+        if (unlikely(kmap_offset >= bo->num_pages)) {
                 ret = -EFBIG;
                 goto out_unref;
         }
@@ -401,7 +404,7 @@ ssize_t ttm_bo_fbdev_io(struct ttm_buffer_object *bo, const char __user *wbuf,
         bool dummy;
 
         kmap_offset = (*f_pos >> PAGE_SHIFT);
-        if (unlikely(kmap_offset) >= bo->num_pages)
+        if (unlikely(kmap_offset >= bo->num_pages))
                 return -EFBIG;
 
         page_offset = *f_pos & ~PAGE_MASK;
diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index b0f73096d372..42cca5519761 100644
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -86,10 +86,16 @@ void ttm_tt_cache_flush(struct page *pages[], unsigned long num_pages)
         unsigned long i;
 
         for (i = 0; i < num_pages; ++i) {
-                if (pages[i]) {
-                        unsigned long start = (unsigned long)page_address(pages[i]);
-                        flush_dcache_range(start, start + PAGE_SIZE);
-                }
+                struct page *page = pages[i];
+                void *page_virtual;
+
+                if (unlikely(page == NULL))
+                        continue;
+
+                page_virtual = kmap_atomic(page, KM_USER0);
+                flush_dcache_range((unsigned long) page_virtual,
+                                   (unsigned long) page_virtual + PAGE_SIZE);
+                kunmap_atomic(page_virtual, KM_USER0);
         }
 #else
         if (on_each_cpu(ttm_tt_ipi_handler, NULL, 1) != 0)
@@ -131,10 +137,17 @@ static void ttm_tt_free_page_directory(struct ttm_tt *ttm)
 
 static struct page *ttm_tt_alloc_page(unsigned page_flags)
 {
+        gfp_t gfp_flags = GFP_USER;
+
         if (page_flags & TTM_PAGE_FLAG_ZERO_ALLOC)
-                return alloc_page(GFP_HIGHUSER | __GFP_ZERO);
+                gfp_flags |= __GFP_ZERO;
+
+        if (page_flags & TTM_PAGE_FLAG_DMA32)
+                gfp_flags |= __GFP_DMA32;
+        else
+                gfp_flags |= __GFP_HIGHMEM;
 
-        return alloc_page(GFP_HIGHUSER);
+        return alloc_page(gfp_flags);
 }
 
 static void ttm_tt_free_user_pages(struct ttm_tt *ttm)