diff options
Diffstat (limited to 'meta-steppeeagle/recipes-kernel/linux/linux-yocto/0010-yocto-amd-drm-radeon-add-GART-debugfs-access-v3.patch')
-rw-r--r-- | meta-steppeeagle/recipes-kernel/linux/linux-yocto/0010-yocto-amd-drm-radeon-add-GART-debugfs-access-v3.patch | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/meta-steppeeagle/recipes-kernel/linux/linux-yocto/0010-yocto-amd-drm-radeon-add-GART-debugfs-access-v3.patch b/meta-steppeeagle/recipes-kernel/linux/linux-yocto/0010-yocto-amd-drm-radeon-add-GART-debugfs-access-v3.patch new file mode 100644 index 00000000..5cabdf25 --- /dev/null +++ b/meta-steppeeagle/recipes-kernel/linux/linux-yocto/0010-yocto-amd-drm-radeon-add-GART-debugfs-access-v3.patch @@ -0,0 +1,119 @@ +From ee6e4aae828077d7503a2baf5acb54df222fa922 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com> +Date: Wed, 11 Dec 2013 06:13:22 -0700 +Subject: [PATCH 10/44] drm/radeon: add GART debugfs access v3 +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +v2: add default_llseek +v3: set inode size in the open callback + +Signed-off-by: Christian König <christian.koenig@amd.com> +--- + drivers/gpu/drm/radeon/radeon.h | 1 + + drivers/gpu/drm/radeon/radeon_ttm.c | 63 +++++++++++++++++++++++++++++++++++ + 2 files changed, 64 insertions(+) + +diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h +index 14df551..7a483c9 100644 +--- a/drivers/gpu/drm/radeon/radeon.h ++++ b/drivers/gpu/drm/radeon/radeon.h +@@ -416,6 +416,7 @@ struct radeon_mman { + + #if defined(CONFIG_DEBUG_FS) + struct dentry *vram; ++ struct dentry *gtt; + #endif + }; + +diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c +index 83ef24d..381782d 100644 +--- a/drivers/gpu/drm/radeon/radeon_ttm.c ++++ b/drivers/gpu/drm/radeon/radeon_ttm.c +@@ -917,6 +917,60 @@ static const struct file_operations radeon_ttm_vram_fops = { + .llseek = default_llseek + }; + ++static int radeon_ttm_gtt_open(struct inode *inode, struct file *filep) ++{ ++ struct radeon_device *rdev = inode->i_private; ++ i_size_write(inode, rdev->mc.gtt_size); ++ filep->private_data = inode->i_private; ++ return 0; ++} ++ ++static ssize_t radeon_ttm_gtt_read(struct file *f, char __user *buf, ++ size_t size, loff_t *pos) ++{ ++ struct radeon_device *rdev = f->private_data; ++ ssize_t result = 0; ++ int r; ++ ++ while (size) { ++ loff_t p = *pos / PAGE_SIZE; ++ unsigned off = *pos & ~PAGE_MASK; ++ ssize_t cur_size = min(size, PAGE_SIZE - off); ++ struct page *page; ++ void *ptr; ++ ++ if (p >= rdev->gart.num_cpu_pages) ++ return result; ++ ++ page = rdev->gart.pages[p]; ++ if (page) { ++ ptr = kmap(page); ++ ptr += off; ++ ++ r = copy_to_user(buf, ptr, cur_size); ++ kunmap(rdev->gart.pages[p]); ++ } else ++ r = clear_user(buf, cur_size); ++ ++ if (r) ++ return -EFAULT; ++ ++ result += cur_size; ++ buf += cur_size; ++ *pos += cur_size; ++ size -= cur_size; ++ } ++ ++ return result; ++} ++ ++static const struct file_operations radeon_ttm_gtt_fops = { ++ .owner = THIS_MODULE, ++ .open = radeon_ttm_gtt_open, ++ .read = radeon_ttm_gtt_read, ++ .llseek = default_llseek ++}; ++ + #endif + + static int radeon_ttm_debugfs_init(struct radeon_device *rdev) +@@ -933,6 +987,12 @@ static int radeon_ttm_debugfs_init(struct radeon_device *rdev) + return PTR_ERR(ent); + rdev->mman.vram = ent; + ++ ent = debugfs_create_file("radeon_gtt", S_IFREG | S_IRUGO, root, ++ rdev, &radeon_ttm_gtt_fops); ++ if (IS_ERR(ent)) ++ return PTR_ERR(ent); ++ rdev->mman.gtt = ent; ++ + count = ARRAY_SIZE(radeon_ttm_debugfs_list); + + #ifdef CONFIG_SWIOTLB +@@ -953,5 +1013,8 @@ static void radeon_ttm_debugfs_fini(struct radeon_device *rdev) + + debugfs_remove(rdev->mman.vram); + rdev->mman.vram = NULL; ++ ++ debugfs_remove(rdev->mman.gtt); ++ rdev->mman.gtt = NULL; + #endif + } +-- +1.7.9.5 + |