drm/amdgpu: add core driver (v4)

This adds the non-asic specific core driver code.

v2: remove extra kconfig option
v3: implement minor fixes from Fengguang Wu
v4: fix cast in amdgpu_ucode.c

Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 268 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c
new file mode 100644
index 000000000000..819fb861ac04
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c
@@ -0,0 +1,268 @@
+/*
+ * Copyright 2015 Advanced Micro Devices, Inc.
+ * All Rights Reserved.
+ *
+ * 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 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 COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ */
+/*
+ * Authors:
+ *    Christian König <deathsimple@vodafone.de>
+ */
+
+#include <drm/drmP.h>
+#include "amdgpu.h"
+
+static int amdgpu_bo_list_create(struct amdgpu_fpriv *fpriv,
+				 struct amdgpu_bo_list **result,
+				 int *id)
+{
+	int r;
+
+	*result = kzalloc(sizeof(struct amdgpu_bo_list), GFP_KERNEL);
+	if (!*result)
+		return -ENOMEM;
+
+	mutex_lock(&fpriv->bo_list_lock);
+	r = idr_alloc(&fpriv->bo_list_handles, *result,
+		      0, 0, GFP_KERNEL);
+	if (r < 0) {
+		mutex_unlock(&fpriv->bo_list_lock);
+		kfree(*result);
+		return r;
+	}
+	*id = r;
+
+	mutex_init(&(*result)->lock);
+	(*result)->num_entries = 0;
+	(*result)->array = NULL;
+
+	mutex_lock(&(*result)->lock);
+	mutex_unlock(&fpriv->bo_list_lock);
+
+	return 0;
+}
+
+static void amdgpu_bo_list_destroy(struct amdgpu_fpriv *fpriv, int id)
+{
+	struct amdgpu_bo_list *list;
+
+	mutex_lock(&fpriv->bo_list_lock);
+	list = idr_find(&fpriv->bo_list_handles, id);
+	if (list) {
+		mutex_lock(&list->lock);
+		idr_remove(&fpriv->bo_list_handles, id);
+		mutex_unlock(&list->lock);
+		amdgpu_bo_list_free(list);
+	}
+	mutex_unlock(&fpriv->bo_list_lock);
+}
+
+static int amdgpu_bo_list_set(struct amdgpu_device *adev,
+				     struct drm_file *filp,
+				     struct amdgpu_bo_list *list,
+				     struct drm_amdgpu_bo_list_entry *info,
+				     unsigned num_entries)
+{
+	struct amdgpu_bo_list_entry *array;
+	struct amdgpu_bo *gds_obj = adev->gds.gds_gfx_bo;
+	struct amdgpu_bo *gws_obj = adev->gds.gws_gfx_bo;
+	struct amdgpu_bo *oa_obj = adev->gds.oa_gfx_bo;
+
+	bool has_userptr = false;
+	unsigned i;
+
+	array = drm_malloc_ab(num_entries, sizeof(struct amdgpu_bo_list_entry));
+	if (!array)
+		return -ENOMEM;
+	memset(array, 0, num_entries * sizeof(struct amdgpu_bo_list_entry));
+
+	for (i = 0; i < num_entries; ++i) {
+		struct amdgpu_bo_list_entry *entry = &array[i];
+		struct drm_gem_object *gobj;
+
+		gobj = drm_gem_object_lookup(adev->ddev, filp, info[i].bo_handle);
+		if (!gobj)
+			goto error_free;
+
+		entry->robj = amdgpu_bo_ref(gem_to_amdgpu_bo(gobj));
+		drm_gem_object_unreference_unlocked(gobj);
+		entry->priority = info[i].bo_priority;
+		entry->prefered_domains = entry->robj->initial_domain;
+		entry->allowed_domains = entry->prefered_domains;
+		if (entry->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
+			entry->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
+		if (amdgpu_ttm_tt_has_userptr(entry->robj->tbo.ttm)) {
+			has_userptr = true;
+			entry->prefered_domains = AMDGPU_GEM_DOMAIN_GTT;
+			entry->allowed_domains = AMDGPU_GEM_DOMAIN_GTT;
+		}
+		entry->tv.bo = &entry->robj->tbo;
+		entry->tv.shared = true;
+
+		if (entry->prefered_domains == AMDGPU_GEM_DOMAIN_GDS)
+			gds_obj = entry->robj;
+		if (entry->prefered_domains == AMDGPU_GEM_DOMAIN_GWS)
+			gws_obj = entry->robj;
+		if (entry->prefered_domains == AMDGPU_GEM_DOMAIN_OA)
+			oa_obj = entry->robj;
+	}
+
+	for (i = 0; i < list->num_entries; ++i)
+		amdgpu_bo_unref(&list->array[i].robj);
+
+	drm_free_large(list->array);
+
+	list->gds_obj = gds_obj;
+	list->gws_obj = gws_obj;
+	list->oa_obj = oa_obj;
+	list->has_userptr = has_userptr;
+	list->array = array;
+	list->num_entries = num_entries;
+
+	return 0;
+
+error_free:
+	drm_free_large(array);
+	return -ENOENT;
+}
+
+struct amdgpu_bo_list *
+amdgpu_bo_list_get(struct amdgpu_fpriv *fpriv, int id)
+{
+	struct amdgpu_bo_list *result;
+
+	mutex_lock(&fpriv->bo_list_lock);
+	result = idr_find(&fpriv->bo_list_handles, id);
+	if (result)
+		mutex_lock(&result->lock);
+	mutex_unlock(&fpriv->bo_list_lock);
+	return result;
+}
+
+void amdgpu_bo_list_put(struct amdgpu_bo_list *list)
+{
+	mutex_unlock(&list->lock);
+}
+
+void amdgpu_bo_list_free(struct amdgpu_bo_list *list)
+{
+	unsigned i;
+
+	for (i = 0; i < list->num_entries; ++i)
+		amdgpu_bo_unref(&list->array[i].robj);
+
+	mutex_destroy(&list->lock);
+	drm_free_large(list->array);
+	kfree(list);
+}
+
+int amdgpu_bo_list_ioctl(struct drm_device *dev, void *data,
+				struct drm_file *filp)
+{
+	const uint32_t info_size = sizeof(struct drm_amdgpu_bo_list_entry);
+
+	struct amdgpu_device *adev = dev->dev_private;
+	struct amdgpu_fpriv *fpriv = filp->driver_priv;
+	union drm_amdgpu_bo_list *args = data;
+	uint32_t handle = args->in.list_handle;
+	const void __user *uptr = (const void*)(long)args->in.bo_info_ptr;
+
+	struct drm_amdgpu_bo_list_entry *info;
+	struct amdgpu_bo_list *list;
+
+	int r;
+
+	info = drm_malloc_ab(args->in.bo_number,
+			     sizeof(struct drm_amdgpu_bo_list_entry));
+	if (!info)
+		return -ENOMEM;
+
+	/* copy the handle array from userspace to a kernel buffer */
+	r = -EFAULT;
+	if (likely(info_size == args->in.bo_info_size)) {
+		unsigned long bytes = args->in.bo_number *
+			args->in.bo_info_size;
+
+		if (copy_from_user(info, uptr, bytes))
+			goto error_free;
+
+	} else {
+		unsigned long bytes = min(args->in.bo_info_size, info_size);
+		unsigned i;
+
+		memset(info, 0, args->in.bo_number * info_size);
+		for (i = 0; i < args->in.bo_number; ++i) {
+			if (copy_from_user(&info[i], uptr, bytes))
+				goto error_free;
+			
+			uptr += args->in.bo_info_size;
+		}
+	}
+
+	switch (args->in.operation) {
+	case AMDGPU_BO_LIST_OP_CREATE:
+		r = amdgpu_bo_list_create(fpriv, &list, &handle);
+		if (r) 
+			goto error_free;
+
+		r = amdgpu_bo_list_set(adev, filp, list, info,
+					      args->in.bo_number);
+		amdgpu_bo_list_put(list);
+		if (r)
+			goto error_free;
+
+		break;
+		
+	case AMDGPU_BO_LIST_OP_DESTROY:
+		amdgpu_bo_list_destroy(fpriv, handle);
+		handle = 0;
+		break;
+
+	case AMDGPU_BO_LIST_OP_UPDATE:
+		r = -ENOENT;
+		list = amdgpu_bo_list_get(fpriv, handle);
+		if (!list)
+			goto error_free;
+
+		r = amdgpu_bo_list_set(adev, filp, list, info,
+					      args->in.bo_number);
+		amdgpu_bo_list_put(list);
+		if (r)
+			goto error_free;
+
+		break;
+
+	default:
+		r = -EINVAL;
+		goto error_free;
+	}
+
+	memset(args, 0, sizeof(*args));
+	args->out.list_handle = handle;
+	drm_free_large(info);
+
+	return 0;
+
+error_free:
+	drm_free_large(info);
+	return r;
+}