/usr/src/sys/dev/pci/drm/drm

Bug Summary

File:	dev/pci/drm/drm_crtc.c
Warning:	line 896, column 8 Branch condition evaluates to a garbage value

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.4 -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name drm_crtc.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model static -mframe-pointer=all -relaxed-aliasing -ffp-contract=on -fno-rounding-math -mconstructor-aliases -ffreestanding -mcmodel=kernel -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -target-feature -sse2 -target-feature -sse -target-feature -3dnow -target-feature -mmx -target-feature +save-args -target-feature +retpoline-external-thunk -disable-red-zone -no-implicit-float -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -nostdsysteminc -nobuiltininc -resource-dir /usr/local/llvm16/lib/clang/16 -I /usr/src/sys -I /usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -I /usr/src/sys/arch -I /usr/src/sys/dev/pci/drm/include -I /usr/src/sys/dev/pci/drm/include/uapi -I /usr/src/sys/dev/pci/drm/amd/include/asic_reg -I /usr/src/sys/dev/pci/drm/amd/include -I /usr/src/sys/dev/pci/drm/amd/amdgpu -I /usr/src/sys/dev/pci/drm/amd/display -I /usr/src/sys/dev/pci/drm/amd/display/include -I /usr/src/sys/dev/pci/drm/amd/display/dc -I /usr/src/sys/dev/pci/drm/amd/display/amdgpu_dm -I /usr/src/sys/dev/pci/drm/amd/pm/inc -I /usr/src/sys/dev/pci/drm/amd/pm/legacy-dpm -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/inc -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu11 -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu12 -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu13 -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/inc -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/hwmgr -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/smumgr -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/inc -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/inc/pmfw_if -I /usr/src/sys/dev/pci/drm/amd/display/dc/inc -I /usr/src/sys/dev/pci/drm/amd/display/dc/inc/hw -I /usr/src/sys/dev/pci/drm/amd/display/dc/clk_mgr -I /usr/src/sys/dev/pci/drm/amd/display/modules/inc -I /usr/src/sys/dev/pci/drm/amd/display/modules/hdcp -I /usr/src/sys/dev/pci/drm/amd/display/dmub/inc -I /usr/src/sys/dev/pci/drm/i915 -D DDB -D DIAGNOSTIC -D KTRACE -D ACCOUNTING -D KMEMSTATS -D PTRACE -D POOL_DEBUG -D CRYPTO -D SYSVMSG -D SYSVSEM -D SYSVSHM -D UVM_SWAP_ENCRYPT -D FFS -D FFS2 -D FFS_SOFTUPDATES -D UFS_DIRHASH -D QUOTA -D EXT2FS -D MFS -D NFSCLIENT -D NFSSERVER -D CD9660 -D UDF -D MSDOSFS -D FIFO -D FUSE -D SOCKET_SPLICE -D TCP_ECN -D TCP_SIGNATURE -D INET6 -D IPSEC -D PPP_BSDCOMP -D PPP_DEFLATE -D PIPEX -D MROUTING -D MPLS -D BOOT_CONFIG -D USER_PCICONF -D APERTURE -D MTRR -D NTFS -D SUSPEND -D HIBERNATE -D PCIVERBOSE -D USBVERBOSE -D WSDISPLAY_COMPAT_USL -D WSDISPLAY_COMPAT_RAWKBD -D WSDISPLAY_DEFAULTSCREENS=6 -D X86EMU -D ONEWIREVERBOSE -D MULTIPROCESSOR -D MAXUSERS=80 -D _KERNEL -O2 -Wno-pointer-sign -Wno-address-of-packed-member -Wno-constant-conversion -Wno-unused-but-set-variable -Wno-gnu-folding-constant -fdebug-compilation-dir=/usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fcf-protection=branch -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -o /home/ben/Projects/scan/2024-01-11-110808-61670-1 -x c /usr/src/sys/dev/pci/drm/drm_crtc.c

/usr/src/sys/dev/pci/drm/drm_crtc.c

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1/*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
5 *
6 * DRM core CRTC related functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission.  The copyright holders make no representations
15 * about the suitability of this software for any purpose.  It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 *      Keith Packard
28 *	Eric Anholt <eric@anholt.net>
29 *      Dave Airlie <airlied@linux.ie>
30 *      Jesse Barnes <jesse.barnes@intel.com>
31 */
32#include <linux/ctype.h>
33#include <linux/list.h>
34#include <linux/slab.h>
35#include <linux/export.h>
36#include <linux/dma-fence.h>
37#include <linux/uaccess.h>
38#include <drm/drm_blend.h>
39#include <drm/drm_crtc.h>
40#include <drm/drm_edid.h>
41#include <drm/drm_fourcc.h>
42#include <drm/drm_framebuffer.h>
43#include <drm/drm_managed.h>
44#include <drm/drm_modeset_lock.h>
45#include <drm/drm_atomic.h>
46#include <drm/drm_auth.h>
47#include <drm/drm_debugfs_crc.h>
48#include <drm/drm_drv.h>
49#include <drm/drm_print.h>
50#include <drm/drm_file.h>
51 
52#include "drm_crtc_internal.h"
53#include "drm_internal.h"
54 
55/**
56 * DOC: overview
57 *
58 * A CRTC represents the overall display pipeline. It receives pixel data from
59 * &drm_plane and blends them together. The &drm_display_mode is also attached
60 * to the CRTC, specifying display timings. On the output side the data is fed
61 * to one or more &drm_encoder, which are then each connected to one
62 * &drm_connector.
63 *
64 * To create a CRTC, a KMS drivers allocates and zeroes an instances of
65 * &struct drm_crtc (possibly as part of a larger structure) and registers it
66 * with a call to drm_crtc_init_with_planes().
67 *
68 * The CRTC is also the entry point for legacy modeset operations, see
69 * &drm_crtc_funcs.set_config, legacy plane operations, see
70 * &drm_crtc_funcs.page_flip and &drm_crtc_funcs.cursor_set2, and other legacy
71 * operations like &drm_crtc_funcs.gamma_set. For atomic drivers all these
72 * features are controlled through &drm_property and
73 * &drm_mode_config_funcs.atomic_check.
74 */
75 
76/**
77 * drm_crtc_from_index - find the registered CRTC at an index
78 * @dev: DRM device
79 * @idx: index of registered CRTC to find for
80 *
81 * Given a CRTC index, return the registered CRTC from DRM device's
82 * list of CRTCs with matching index. This is the inverse of drm_crtc_index().
83 * It's useful in the vblank callbacks (like &drm_driver.enable_vblank or
84 * &drm_driver.disable_vblank), since that still deals with indices instead
85 * of pointers to &struct drm_crtc."
86 */
87struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx)
88{
89	struct drm_crtc *crtc;
90 
91	drm_for_each_crtc(crtc, dev)for (crtc = ({ const __typeof( ((__typeof(*crtc) *)0)->head
 ) *__mptr = ((&(dev)->mode_config.crtc_list)->next
); (__typeof(*crtc) *)( (char *)__mptr - __builtin_offsetof(__typeof
(*crtc), head) );}); &crtc->head != (&(dev)->mode_config
.crtc_list); crtc = ({ const __typeof( ((__typeof(*crtc) *)0)
->head ) *__mptr = (crtc->head.next); (__typeof(*crtc) *
)( (char *)__mptr - __builtin_offsetof(__typeof(*crtc), head)
 );}))
92		if (idx == crtc->index)
93			return crtc;
94 
95	return NULL((void *)0);
96}
97EXPORT_SYMBOL(drm_crtc_from_index);
98 
99int drm_crtc_force_disable(struct drm_crtc *crtc)
100{
101	struct drm_mode_set set = {
102		.crtc = crtc,
103	};
104 
105	WARN_ON(drm_drv_uses_atomic_modeset(crtc->dev))({ int __ret = !!(drm_drv_uses_atomic_modeset(crtc->dev));
 if (__ret) printf("WARNING %s failed at %s:%d\n", "drm_drv_uses_atomic_modeset(crtc->dev)"
, "/usr/src/sys/dev/pci/drm/drm_crtc.c", 105); __builtin_expect
(!!(__ret), 0); });
106 
107	return drm_mode_set_config_internal(&set);
108}
109 
110static unsigned int drm_num_crtcs(struct drm_device *dev)
111{
112	unsigned int num = 0;
113	struct drm_crtc *tmp;
114 
115	drm_for_each_crtc(tmp, dev)for (tmp = ({ const __typeof( ((__typeof(*tmp) *)0)->head )
 *__mptr = ((&(dev)->mode_config.crtc_list)->next);
 (__typeof(*tmp) *)( (char *)__mptr - __builtin_offsetof(__typeof
(*tmp), head) );}); &tmp->head != (&(dev)->mode_config
.crtc_list); tmp = ({ const __typeof( ((__typeof(*tmp) *)0)->
head ) *__mptr = (tmp->head.next); (__typeof(*tmp) *)( (char
 *)__mptr - __builtin_offsetof(__typeof(*tmp), head) );})) {
116		num++;
117	}
118 
119	return num;
120}
121 
122int drm_crtc_register_all(struct drm_device *dev)
123{
124	struct drm_crtc *crtc;
125	int ret = 0;
126 
127	drm_for_each_crtc(crtc, dev)for (crtc = ({ const __typeof( ((__typeof(*crtc) *)0)->head
 ) *__mptr = ((&(dev)->mode_config.crtc_list)->next
); (__typeof(*crtc) *)( (char *)__mptr - __builtin_offsetof(__typeof
(*crtc), head) );}); &crtc->head != (&(dev)->mode_config
.crtc_list); crtc = ({ const __typeof( ((__typeof(*crtc) *)0)
->head ) *__mptr = (crtc->head.next); (__typeof(*crtc) *
)( (char *)__mptr - __builtin_offsetof(__typeof(*crtc), head)
 );})) {
128		drm_debugfs_crtc_add(crtc);
129 
130		if (crtc->funcs->late_register)
131			ret = crtc->funcs->late_register(crtc);
132		if (ret)
133			return ret;
134	}
135 
136	return 0;
137}
138 
139void drm_crtc_unregister_all(struct drm_device *dev)
140{
141	struct drm_crtc *crtc;
142 
143	drm_for_each_crtc(crtc, dev)for (crtc = ({ const __typeof( ((__typeof(*crtc) *)0)->head
 ) *__mptr = ((&(dev)->mode_config.crtc_list)->next
); (__typeof(*crtc) *)( (char *)__mptr - __builtin_offsetof(__typeof
(*crtc), head) );}); &crtc->head != (&(dev)->mode_config
.crtc_list); crtc = ({ const __typeof( ((__typeof(*crtc) *)0)
->head ) *__mptr = (crtc->head.next); (__typeof(*crtc) *
)( (char *)__mptr - __builtin_offsetof(__typeof(*crtc), head)
 );})) {
144		if (crtc->funcs->early_unregister)
145			crtc->funcs->early_unregister(crtc);
146		drm_debugfs_crtc_remove(crtc);
147	}
148}
149 
150static int drm_crtc_crc_init(struct drm_crtc *crtc)
151{
152#ifdef CONFIG_DEBUG_FS
153	mtx_init(&crtc->crc.lock, IPL_NONE)do { (void)(((void *)0)); (void)(0); __mtx_init((&crtc->
crc.lock), ((((0x0)) > 0x0 && ((0x0)) < 0x9) ? 0x9
 : ((0x0)))); } while (0);
154	init_waitqueue_head(&crtc->crc.wq);
155	crtc->crc.source = kstrdup("auto", GFP_KERNEL(0x0001 | 0x0004));
156	if (!crtc->crc.source)
157		return -ENOMEM12;
158#endif
159	return 0;
160}
161 
162static void drm_crtc_crc_fini(struct drm_crtc *crtc)
163{
164#ifdef CONFIG_DEBUG_FS
165	kfree(crtc->crc.source);
166#endif
167}
168 
169static const struct dma_fence_ops drm_crtc_fence_ops;
170 
171static struct drm_crtc *fence_to_crtc(struct dma_fence *fence)
172{
173	BUG_ON(fence->ops != &drm_crtc_fence_ops)((!(fence->ops != &drm_crtc_fence_ops)) ? (void)0 : __assert
("diagnostic ", "/usr/src/sys/dev/pci/drm/drm_crtc.c", 173, "!(fence->ops != &drm_crtc_fence_ops)"
));
174	return container_of(fence->lock, struct drm_crtc, fence_lock)({ const __typeof( ((struct drm_crtc *)0)->fence_lock ) *__mptr
 = (fence->lock); (struct drm_crtc *)( (char *)__mptr - __builtin_offsetof
(struct drm_crtc, fence_lock) );});
175}
176 
177static const char *drm_crtc_fence_get_driver_name(struct dma_fence *fence)
178{
179	struct drm_crtc *crtc = fence_to_crtc(fence);
180 
181	return crtc->dev->driver->name;
182}
183 
184static const char *drm_crtc_fence_get_timeline_name(struct dma_fence *fence)
185{
186	struct drm_crtc *crtc = fence_to_crtc(fence);
187 
188	return crtc->timeline_name;
189}
190 
191static const struct dma_fence_ops drm_crtc_fence_ops = {
192	.get_driver_name = drm_crtc_fence_get_driver_name,
193	.get_timeline_name = drm_crtc_fence_get_timeline_name,
194};
195 
196struct dma_fence *drm_crtc_create_fence(struct drm_crtc *crtc)
197{
198	struct dma_fence *fence;
199 
200	fence = kzalloc(sizeof(*fence), GFP_KERNEL(0x0001 | 0x0004));
201	if (!fence)
202		return NULL((void *)0);
203 
204	dma_fence_init(fence, &drm_crtc_fence_ops, &crtc->fence_lock,
205		       crtc->fence_context, ++crtc->fence_seqno);
206 
207	return fence;
208}
209 
210/**
211 * DOC: standard CRTC properties
212 *
213 * DRM CRTCs have a few standardized properties:
214 *
215 * ACTIVE:
216 * 	Atomic property for setting the power state of the CRTC. When set to 1
217 * 	the CRTC will actively display content. When set to 0 the CRTC will be
218 * 	powered off. There is no expectation that user-space will reset CRTC
219 * 	resources like the mode and planes when setting ACTIVE to 0.
220 *
221 * 	User-space can rely on an ACTIVE change to 1 to never fail an atomic
222 * 	test as long as no other property has changed. If a change to ACTIVE
223 * 	fails an atomic test, this is a driver bug. For this reason setting
224 * 	ACTIVE to 0 must not release internal resources (like reserved memory
225 * 	bandwidth or clock generators).
226 *
227 * 	Note that the legacy DPMS property on connectors is internally routed
228 * 	to control this property for atomic drivers.
229 * MODE_ID:
230 * 	Atomic property for setting the CRTC display timings. The value is the
231 * 	ID of a blob containing the DRM mode info. To disable the CRTC,
232 * 	user-space must set this property to 0.
233 *
234 * 	Setting MODE_ID to 0 will release reserved resources for the CRTC.
235 * SCALING_FILTER:
236 * 	Atomic property for setting the scaling filter for CRTC scaler
237 *
238 * 	The value of this property can be one of the following:
239 *
240 * 	Default:
241 * 		Driver's default scaling filter
242 * 	Nearest Neighbor:
243 * 		Nearest Neighbor scaling filter
244 */
245 
246__printf(6, 0)__attribute__((__format__(__kprintf__,6,0)))
247static int __drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
248				       struct drm_plane *primary,
249				       struct drm_plane *cursor,
250				       const struct drm_crtc_funcs *funcs,
251				       const char *name, va_list ap)
252{
253	struct drm_mode_config *config = &dev->mode_config;
254	int ret;
255 
256	WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY)({ int __ret = !!(primary && primary->type != DRM_PLANE_TYPE_PRIMARY
); if (__ret) printf("WARNING %s failed at %s:%d\n", "primary && primary->type != DRM_PLANE_TYPE_PRIMARY"
, "/usr/src/sys/dev/pci/drm/drm_crtc.c", 256); __builtin_expect
(!!(__ret), 0); });
257	WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR)({ int __ret = !!(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR
); if (__ret) printf("WARNING %s failed at %s:%d\n", "cursor && cursor->type != DRM_PLANE_TYPE_CURSOR"
, "/usr/src/sys/dev/pci/drm/drm_crtc.c", 257); __builtin_expect
(!!(__ret), 0); });
258 
259	/* crtc index is used with 32bit bitmasks */
260	if (WARN_ON(config->num_crtc >= 32)({ int __ret = !!(config->num_crtc >= 32); if (__ret) printf
("WARNING %s failed at %s:%d\n", "config->num_crtc >= 32"
, "/usr/src/sys/dev/pci/drm/drm_crtc.c", 260); __builtin_expect
(!!(__ret), 0); }))
261		return -EINVAL22;
262 
263	WARN_ON(drm_drv_uses_atomic_modeset(dev) &&({ int __ret = !!(drm_drv_uses_atomic_modeset(dev) &&
 (!funcs->atomic_destroy_state || !funcs->atomic_duplicate_state
)); if (__ret) printf("WARNING %s failed at %s:%d\n", "drm_drv_uses_atomic_modeset(dev) && (!funcs->atomic_destroy_state || !funcs->atomic_duplicate_state)"
, "/usr/src/sys/dev/pci/drm/drm_crtc.c", 265); __builtin_expect
(!!(__ret), 0); })
264		(!funcs->atomic_destroy_state ||({ int __ret = !!(drm_drv_uses_atomic_modeset(dev) &&
 (!funcs->atomic_destroy_state || !funcs->atomic_duplicate_state
)); if (__ret) printf("WARNING %s failed at %s:%d\n", "drm_drv_uses_atomic_modeset(dev) && (!funcs->atomic_destroy_state || !funcs->atomic_duplicate_state)"
, "/usr/src/sys/dev/pci/drm/drm_crtc.c", 265); __builtin_expect
(!!(__ret), 0); })
265		 !funcs->atomic_duplicate_state))({ int __ret = !!(drm_drv_uses_atomic_modeset(dev) &&
 (!funcs->atomic_destroy_state || !funcs->atomic_duplicate_state
)); if (__ret) printf("WARNING %s failed at %s:%d\n", "drm_drv_uses_atomic_modeset(dev) && (!funcs->atomic_destroy_state || !funcs->atomic_duplicate_state)"
, "/usr/src/sys/dev/pci/drm/drm_crtc.c", 265); __builtin_expect
(!!(__ret), 0); });
266 
267	crtc->dev = dev;
268	crtc->funcs = funcs;
269 
270	INIT_LIST_HEAD(&crtc->commit_list);
271	mtx_init(&crtc->commit_lock, IPL_NONE)do { (void)(((void *)0)); (void)(0); __mtx_init((&crtc->
commit_lock), ((((0x0)) > 0x0 && ((0x0)) < 0x9)
 ? 0x9 : ((0x0)))); } while (0);
272 
273	drm_modeset_lock_init(&crtc->mutex);
274	ret = drm_mode_object_add(dev, &crtc->base, DRM_MODE_OBJECT_CRTC0xcccccccc);
275	if (ret)
276		return ret;
277 
278	if (name) {
279		crtc->name = kvasprintf(GFP_KERNEL(0x0001 | 0x0004), name, ap);
280	} else {
281		crtc->name = kasprintf(GFP_KERNEL(0x0001 | 0x0004), "crtc-%d",
282				       drm_num_crtcs(dev));
283	}
284	if (!crtc->name) {
285		drm_mode_object_unregister(dev, &crtc->base);
286		return -ENOMEM12;
287	}
288 
289	crtc->fence_context = dma_fence_context_alloc(1);
290	mtx_init(&crtc->fence_lock, IPL_TTY)do { (void)(((void *)0)); (void)(0); __mtx_init((&crtc->
fence_lock), ((((0x9)) > 0x0 && ((0x9)) < 0x9) ?
 0x9 : ((0x9)))); } while (0);
291	snprintf(crtc->timeline_name, sizeof(crtc->timeline_name),
292		 "CRTC:%d-%s", crtc->base.id, crtc->name);
293 
294	crtc->base.properties = &crtc->properties;
295 
296	list_add_tail(&crtc->head, &config->crtc_list);
297	crtc->index = config->num_crtc++;
298 
299	crtc->primary = primary;
300	crtc->cursor = cursor;
301	if (primary && !primary->possible_crtcs)
302		primary->possible_crtcs = drm_crtc_mask(crtc);
303	if (cursor && !cursor->possible_crtcs)
304		cursor->possible_crtcs = drm_crtc_mask(crtc);
305 
306	ret = drm_crtc_crc_init(crtc);
307	if (ret) {
308		drm_mode_object_unregister(dev, &crtc->base);
309		return ret;
310	}
311 
312	if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
313		drm_object_attach_property(&crtc->base, config->prop_active, 0);
314		drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
315		drm_object_attach_property(&crtc->base,
316					   config->prop_out_fence_ptr, 0);
317		drm_object_attach_property(&crtc->base,
318					   config->prop_vrr_enabled, 0);
319	}
320 
321	return 0;
322}
323 
324/**
325 * drm_crtc_init_with_planes - Initialise a new CRTC object with
326 *    specified primary and cursor planes.
327 * @dev: DRM device
328 * @crtc: CRTC object to init
329 * @primary: Primary plane for CRTC
330 * @cursor: Cursor plane for CRTC
331 * @funcs: callbacks for the new CRTC
332 * @name: printf style format string for the CRTC name, or NULL for default name
333 *
334 * Inits a new object created as base part of a driver crtc object. Drivers
335 * should use this function instead of drm_crtc_init(), which is only provided
336 * for backwards compatibility with drivers which do not yet support universal
337 * planes). For really simple hardware which has only 1 plane look at
338 * drm_simple_display_pipe_init() instead.
339 * The &drm_crtc_funcs.destroy hook should call drm_crtc_cleanup() and kfree()
340 * the crtc structure. The crtc structure should not be allocated with
341 * devm_kzalloc().
342 *
343 * The @primary and @cursor planes are only relevant for legacy uAPI, see
344 * &drm_crtc.primary and &drm_crtc.cursor.
345 *
346 * Note: consider using drmm_crtc_alloc_with_planes() or
347 * drmm_crtc_init_with_planes() instead of drm_crtc_init_with_planes()
348 * to let the DRM managed resource infrastructure take care of cleanup
349 * and deallocation.
350 *
351 * Returns:
352 * Zero on success, error code on failure.
353 */
354int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
355			      struct drm_plane *primary,
356			      struct drm_plane *cursor,
357			      const struct drm_crtc_funcs *funcs,
358			      const char *name, ...)
359{
360	va_list ap;
361	int ret;
362 
363	WARN_ON(!funcs->destroy)({ int __ret = !!(!funcs->destroy); if (__ret) printf("WARNING %s failed at %s:%d\n"
, "!funcs->destroy", "/usr/src/sys/dev/pci/drm/drm_crtc.c"
, 363); __builtin_expect(!!(__ret), 0); });
364 
365	va_start(ap, name)__builtin_va_start((ap), name);
366	ret = __drm_crtc_init_with_planes(dev, crtc, primary, cursor, funcs,
367					  name, ap);
368	va_end(ap)__builtin_va_end((ap));
369 
370	return ret;
371}
372EXPORT_SYMBOL(drm_crtc_init_with_planes);
373 
374static void drmm_crtc_init_with_planes_cleanup(struct drm_device *dev,
375					       void *ptr)
376{
377	struct drm_crtc *crtc = ptr;
378 
379	drm_crtc_cleanup(crtc);
380}
381 
382__printf(6, 0)__attribute__((__format__(__kprintf__,6,0)))
383static int __drmm_crtc_init_with_planes(struct drm_device *dev,
384					struct drm_crtc *crtc,
385					struct drm_plane *primary,
386					struct drm_plane *cursor,
387					const struct drm_crtc_funcs *funcs,
388					const char *name,
389					va_list args)
390{
391	int ret;
392 
393	drm_WARN_ON(dev, funcs && funcs->destroy)({ int __ret = !!((funcs && funcs->destroy)); if (
__ret) printf("%s %s: " "%s", dev_driver_string(((dev))->dev
), "", "drm_WARN_ON(" "funcs && funcs->destroy" ")"
); __builtin_expect(!!(__ret), 0); });
394 
395	ret = __drm_crtc_init_with_planes(dev, crtc, primary, cursor, funcs,
396					  name, args);
397	if (ret)
398		return ret;
399 
400	ret = drmm_add_action_or_reset(dev, drmm_crtc_init_with_planes_cleanup,
401				       crtc);
402	if (ret)
403		return ret;
404 
405	return 0;
406}
407 
408/**
409 * drmm_crtc_init_with_planes - Initialise a new CRTC object with
410 *    specified primary and cursor planes.
411 * @dev: DRM device
412 * @crtc: CRTC object to init
413 * @primary: Primary plane for CRTC
414 * @cursor: Cursor plane for CRTC
415 * @funcs: callbacks for the new CRTC
416 * @name: printf style format string for the CRTC name, or NULL for default name
417 *
418 * Inits a new object created as base part of a driver crtc object. Drivers
419 * should use this function instead of drm_crtc_init(), which is only provided
420 * for backwards compatibility with drivers which do not yet support universal
421 * planes). For really simple hardware which has only 1 plane look at
422 * drm_simple_display_pipe_init() instead.
423 *
424 * Cleanup is automatically handled through registering
425 * drmm_crtc_cleanup() with drmm_add_action(). The crtc structure should
426 * be allocated with drmm_kzalloc().
427 *
428 * The @drm_crtc_funcs.destroy hook must be NULL.
429 *
430 * The @primary and @cursor planes are only relevant for legacy uAPI, see
431 * &drm_crtc.primary and &drm_crtc.cursor.
432 *
433 * Returns:
434 * Zero on success, error code on failure.
435 */
436int drmm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
437			       struct drm_plane *primary,
438			       struct drm_plane *cursor,
439			       const struct drm_crtc_funcs *funcs,
440			       const char *name, ...)
441{
442	va_list ap;
443	int ret;
444 
445	va_start(ap, name)__builtin_va_start((ap), name);
446	ret = __drmm_crtc_init_with_planes(dev, crtc, primary, cursor, funcs,
447					   name, ap);
448	va_end(ap)__builtin_va_end((ap));
449	if (ret)
450		return ret;
451 
452	return 0;
453}
454EXPORT_SYMBOL(drmm_crtc_init_with_planes);
455 
456void *__drmm_crtc_alloc_with_planes(struct drm_device *dev,
457				    size_t size, size_t offset,
458				    struct drm_plane *primary,
459				    struct drm_plane *cursor,
460				    const struct drm_crtc_funcs *funcs,
461				    const char *name, ...)
462{
463	void *container;
464	struct drm_crtc *crtc;
465	va_list ap;
466	int ret;
467 
468	if (WARN_ON(!funcs || funcs->destroy)({ int __ret = !!(!funcs || funcs->destroy); if (__ret) printf
("WARNING %s failed at %s:%d\n", "!funcs || funcs->destroy"
, "/usr/src/sys/dev/pci/drm/drm_crtc.c", 468); __builtin_expect
(!!(__ret), 0); }))
469		return ERR_PTR(-EINVAL22);
470 
471	container = drmm_kzalloc(dev, size, GFP_KERNEL(0x0001 | 0x0004));
472	if (!container)
473		return ERR_PTR(-ENOMEM12);
474 
475	crtc = container + offset;
476 
477	va_start(ap, name)__builtin_va_start((ap), name);
478	ret = __drmm_crtc_init_with_planes(dev, crtc, primary, cursor, funcs,
479					   name, ap);
480	va_end(ap)__builtin_va_end((ap));
481	if (ret)
482		return ERR_PTR(ret);
483 
484	return container;
485}
486EXPORT_SYMBOL(__drmm_crtc_alloc_with_planes);
487 
488/**
489 * drm_crtc_cleanup - Clean up the core crtc usage
490 * @crtc: CRTC to cleanup
491 *
492 * This function cleans up @crtc and removes it from the DRM mode setting
493 * core. Note that the function does *not* free the crtc structure itself,
494 * this is the responsibility of the caller.
495 */
496void drm_crtc_cleanup(struct drm_crtc *crtc)
497{
498	struct drm_device *dev = crtc->dev;
499 
500	/* Note that the crtc_list is considered to be static; should we
501	 * remove the drm_crtc at runtime we would have to decrement all
502	 * the indices on the drm_crtc after us in the crtc_list.
503	 */
504 
505	drm_crtc_crc_fini(crtc);
506 
507	kfree(crtc->gamma_store);
508	crtc->gamma_store = NULL((void *)0);
509 
510	drm_modeset_lock_fini(&crtc->mutex);
511 
512	drm_mode_object_unregister(dev, &crtc->base);
513	list_del(&crtc->head);
514	dev->mode_config.num_crtc--;
515 
516	WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state)({ int __ret = !!(crtc->state && !crtc->funcs->
atomic_destroy_state); if (__ret) printf("WARNING %s failed at %s:%d\n"
, "crtc->state && !crtc->funcs->atomic_destroy_state"
, "/usr/src/sys/dev/pci/drm/drm_crtc.c", 516); __builtin_expect
(!!(__ret), 0); });
517	if (crtc->state && crtc->funcs->atomic_destroy_state)
518		crtc->funcs->atomic_destroy_state(crtc, crtc->state);
519 
520	kfree(crtc->name);
521 
522	memset(crtc, 0, sizeof(*crtc))__builtin_memset((crtc), (0), (sizeof(*crtc)));
523}
524EXPORT_SYMBOL(drm_crtc_cleanup);
525 
526/**
527 * drm_mode_getcrtc - get CRTC configuration
528 * @dev: drm device for the ioctl
529 * @data: data pointer for the ioctl
530 * @file_priv: drm file for the ioctl call
531 *
532 * Construct a CRTC configuration structure to return to the user.
533 *
534 * Called by the user via ioctl.
535 *
536 * Returns:
537 * Zero on success, negative errno on failure.
538 */
539int drm_mode_getcrtc(struct drm_device *dev,
540		     void *data, struct drm_file *file_priv)
541{
542	struct drm_mode_crtc *crtc_resp = data;
543	struct drm_crtc *crtc;
544	struct drm_plane *plane;
545 
546	if (!drm_core_check_feature(dev, DRIVER_MODESET))
547		return -EOPNOTSUPP45;
548 
549	crtc = drm_crtc_find(dev, file_priv, crtc_resp->crtc_id);
550	if (!crtc)
551		return -ENOENT2;
552 
553	plane = crtc->primary;
554 
555	crtc_resp->gamma_size = crtc->gamma_size;
556 
557	drm_modeset_lock(&plane->mutex, NULL((void *)0));
558	if (plane->state && plane->state->fb)
559		crtc_resp->fb_id = plane->state->fb->base.id;
560	else if (!plane->state && plane->fb)
561		crtc_resp->fb_id = plane->fb->base.id;
562	else
563		crtc_resp->fb_id = 0;
564 
565	if (plane->state) {
566		crtc_resp->x = plane->state->src_x >> 16;
567		crtc_resp->y = plane->state->src_y >> 16;
568	}
569	drm_modeset_unlock(&plane->mutex);
570 
571	drm_modeset_lock(&crtc->mutex, NULL((void *)0));
572	if (crtc->state) {
573		if (crtc->state->enable) {
574			drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
575			crtc_resp->mode_valid = 1;
576		} else {
577			crtc_resp->mode_valid = 0;
578		}
579	} else {
580		crtc_resp->x = crtc->x;
581		crtc_resp->y = crtc->y;
582 
583		if (crtc->enabled) {
584			drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
585			crtc_resp->mode_valid = 1;
586 
587		} else {
588			crtc_resp->mode_valid = 0;
589		}
590	}
591	if (!file_priv->aspect_ratio_allowed)
592		crtc_resp->mode.flags &= ~DRM_MODE_FLAG_PIC_AR_MASK(0x0F<<19);
593	drm_modeset_unlock(&crtc->mutex);
594 
595	return 0;
596}
597 
598static int __drm_mode_set_config_internal(struct drm_mode_set *set,
599					  struct drm_modeset_acquire_ctx *ctx)
600{
601	struct drm_crtc *crtc = set->crtc;
602	struct drm_framebuffer *fb;
603	struct drm_crtc *tmp;
604	int ret;
605 
606	WARN_ON(drm_drv_uses_atomic_modeset(crtc->dev))({ int __ret = !!(drm_drv_uses_atomic_modeset(crtc->dev));
 if (__ret) printf("WARNING %s failed at %s:%d\n", "drm_drv_uses_atomic_modeset(crtc->dev)"
, "/usr/src/sys/dev/pci/drm/drm_crtc.c", 606); __builtin_expect
(!!(__ret), 0); });
607 
608	/*
609	 * NOTE: ->set_config can also disable other crtcs (if we steal all
610	 * connectors from it), hence we need to refcount the fbs across all
611	 * crtcs. Atomic modeset will have saner semantics ...
612	 */
613	drm_for_each_crtc(tmp, crtc->dev)for (tmp = ({ const __typeof( ((__typeof(*tmp) *)0)->head )
 *__mptr = ((&(crtc->dev)->mode_config.crtc_list)->
next); (__typeof(*tmp) *)( (char *)__mptr - __builtin_offsetof
(__typeof(*tmp), head) );}); &tmp->head != (&(crtc
->dev)->mode_config.crtc_list); tmp = ({ const __typeof
( ((__typeof(*tmp) *)0)->head ) *__mptr = (tmp->head.next
); (__typeof(*tmp) *)( (char *)__mptr - __builtin_offsetof(__typeof
(*tmp), head) );})) {
614		struct drm_plane *plane = tmp->primary;
615 
616		plane->old_fb = plane->fb;
617	}
618 
619	fb = set->fb;
620 
621	ret = crtc->funcs->set_config(set, ctx);
622	if (ret == 0) {
623		struct drm_plane *plane = crtc->primary;
624 
625		plane->crtc = fb ? crtc : NULL((void *)0);
626		plane->fb = fb;
627	}
628 
629	drm_for_each_crtc(tmp, crtc->dev)for (tmp = ({ const __typeof( ((__typeof(*tmp) *)0)->head )
 *__mptr = ((&(crtc->dev)->mode_config.crtc_list)->
next); (__typeof(*tmp) *)( (char *)__mptr - __builtin_offsetof
(__typeof(*tmp), head) );}); &tmp->head != (&(crtc
->dev)->mode_config.crtc_list); tmp = ({ const __typeof
( ((__typeof(*tmp) *)0)->head ) *__mptr = (tmp->head.next
); (__typeof(*tmp) *)( (char *)__mptr - __builtin_offsetof(__typeof
(*tmp), head) );})) {
630		struct drm_plane *plane = tmp->primary;
631 
632		if (plane->fb)
633			drm_framebuffer_get(plane->fb);
634		if (plane->old_fb)
635			drm_framebuffer_put(plane->old_fb);
636		plane->old_fb = NULL((void *)0);
637	}
638 
639	return ret;
640}
641 
642/**
643 * drm_mode_set_config_internal - helper to call &drm_mode_config_funcs.set_config
644 * @set: modeset config to set
645 *
646 * This is a little helper to wrap internal calls to the
647 * &drm_mode_config_funcs.set_config driver interface. The only thing it adds is
648 * correct refcounting dance.
649 *
650 * This should only be used by non-atomic legacy drivers.
651 *
652 * Returns:
653 * Zero on success, negative errno on failure.
654 */
655int drm_mode_set_config_internal(struct drm_mode_set *set)
656{
657	WARN_ON(drm_drv_uses_atomic_modeset(set->crtc->dev))({ int __ret = !!(drm_drv_uses_atomic_modeset(set->crtc->
dev)); if (__ret) printf("WARNING %s failed at %s:%d\n", "drm_drv_uses_atomic_modeset(set->crtc->dev)"
, "/usr/src/sys/dev/pci/drm/drm_crtc.c", 657); __builtin_expect
(!!(__ret), 0); });
658 
659	return __drm_mode_set_config_internal(set, NULL((void *)0));
660}
661EXPORT_SYMBOL(drm_mode_set_config_internal);
662 
663/**
664 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
665 *     CRTC viewport
666 * @crtc: CRTC that framebuffer will be displayed on
667 * @x: x panning
668 * @y: y panning
669 * @mode: mode that framebuffer will be displayed under
670 * @fb: framebuffer to check size of
671 */
672int drm_crtc_check_viewport(const struct drm_crtc *crtc,
673			    int x, int y,
674			    const struct drm_display_mode *mode,
675			    const struct drm_framebuffer *fb)
676 
677{
678	int hdisplay, vdisplay;
679 
680	drm_mode_get_hv_timing(mode, &hdisplay, &vdisplay);
681 
682	if (crtc->state &&
27
←
Assuming field 'state' is null→
683	    drm_rotation_90_or_270(crtc->primary->state->rotation))
684		swap(hdisplay, vdisplay)do { __typeof(hdisplay) __tmp = (hdisplay); (hdisplay) = (vdisplay
); (vdisplay) = __tmp; } while(0);
685 
686	return drm_framebuffer_check_src_coords(x << 16, y << 16,
28
←
Returning value, which participates in a condition later→
687						hdisplay << 16, vdisplay << 16,
688						fb);
689}
690EXPORT_SYMBOL(drm_crtc_check_viewport);
691 
692/**
693 * drm_mode_setcrtc - set CRTC configuration
694 * @dev: drm device for the ioctl
695 * @data: data pointer for the ioctl
696 * @file_priv: drm file for the ioctl call
697 *
698 * Build a new CRTC configuration based on user request.
699 *
700 * Called by the user via ioctl.
701 *
702 * Returns:
703 * Zero on success, negative errno on failure.
704 */
705int drm_mode_setcrtc(struct drm_device *dev, void *data,
706		     struct drm_file *file_priv)
707{
708	struct drm_mode_config *config = &dev->mode_config;
709	struct drm_mode_crtc *crtc_req = data;
710	struct drm_crtc *crtc;
711	struct drm_plane *plane;
712	struct drm_connector **connector_set = NULL((void *)0), *connector;
713	struct drm_framebuffer *fb = NULL((void *)0);
714	struct drm_display_mode *mode = NULL((void *)0);
715	struct drm_mode_set set;
716	uint32_t __user *set_connectors_ptr;
717	struct drm_modeset_acquire_ctx ctx;
718	int ret;
719	int i;
720 
721	if (!drm_core_check_feature(dev, DRIVER_MODESET))
722		return -EOPNOTSUPP45;
723 
724	/*
725	 * Universal plane src offsets are only 16.16, prevent havoc for
726	 * drivers using universal plane code internally.
727	 */
728	if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
1
Assuming the condition is false→
2
←
Assuming the condition is false→
3
←
Taking false branch→
729		return -ERANGE34;
730 
731	crtc = drm_crtc_find(dev, file_priv, crtc_req->crtc_id);
4
←
Calling 'drm_crtc_find'→
8
←
Returning from 'drm_crtc_find'→
732	if (!crtc8.1
'crtc' is non-null
8.1
'crtc' is non-null
8.1
'crtc' is non-null
) {
9
←
Taking false branch→
733		DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id)___drm_dbg(((void *)0), DRM_UT_KMS, "Unknown CRTC ID %d\n", crtc_req
->crtc_id);
734		return -ENOENT2;
735	}
736	DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name)___drm_dbg(((void *)0), DRM_UT_KMS, "[CRTC:%d:%s]\n", crtc->
base.id, crtc->name);
737 
738	plane = crtc->primary;
739 
740	/* allow disabling with the primary plane leased */
741	if (crtc_req->mode_valid && !drm_lease_held(file_priv, plane->base.id)(1))
10
←
Assuming field 'mode_valid' is not equal to 0→
11
←
Taking false branch→
742		return -EACCES13;
743 
744	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx,if (!drm_drv_uses_atomic_modeset(dev)) rw_enter_write(&dev
->mode_config.mutex); drm_modeset_acquire_init(&ctx, (
1UL << (0))); modeset_lock_retry: ret = drm_modeset_lock_all_ctx
(dev, &ctx); if (ret) goto modeset_lock_fail;
12
←
Taking false branch→
13
←
Assuming 'ret' is 0→
14
←
Taking false branch→
745				   DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret)if (!drm_drv_uses_atomic_modeset(dev)) rw_enter_write(&dev
->mode_config.mutex); drm_modeset_acquire_init(&ctx, (
1UL << (0))); modeset_lock_retry: ret = drm_modeset_lock_all_ctx
(dev, &ctx); if (ret) goto modeset_lock_fail;;
746 
747	if (crtc_req->mode_valid14.1
Field 'mode_valid' is not equal to 0
14.1
Field 'mode_valid' is not equal to 0
14.1
Field 'mode_valid' is not equal to 0
) {
15
←
Taking true branch→
748		/* If we have a mode we need a framebuffer. */
749		/* If we pass -1, set the mode with the currently bound fb */
750		if (crtc_req->fb_id == -1) {
16
←
Assuming the condition is false→
17
←
Taking false branch→
751			struct drm_framebuffer *old_fb;
752 
753			if (plane->state)
754				old_fb = plane->state->fb;
755			else
756				old_fb = plane->fb;
757 
758			if (!old_fb) {
759				DRM_DEBUG_KMS("CRTC doesn't have current FB\n")___drm_dbg(((void *)0), DRM_UT_KMS, "CRTC doesn't have current FB\n"
);
760				ret = -EINVAL22;
761				goto out;
762			}
763 
764			fb = old_fb;
765			/* Make refcounting symmetric with the lookup path. */
766			drm_framebuffer_get(fb);
767		} else {
768			fb = drm_framebuffer_lookup(dev, file_priv, crtc_req->fb_id);
769			if (!fb) {
18
←
Assuming 'fb' is non-null→
19
←
Taking false branch→
770				DRM_DEBUG_KMS("Unknown FB ID%d\n",___drm_dbg(((void *)0), DRM_UT_KMS, "Unknown FB ID%d\n", crtc_req
->fb_id)
771						crtc_req->fb_id)___drm_dbg(((void *)0), DRM_UT_KMS, "Unknown FB ID%d\n", crtc_req
->fb_id);
772				ret = -ENOENT2;
773				goto out;
774			}
775		}
776 
777		mode = drm_mode_create(dev);
778		if (!mode) {
20
←
Assuming 'mode' is non-null→
779			ret = -ENOMEM12;
780			goto out;
781		}
782		if (!file_priv->aspect_ratio_allowed &&
21
←
Assuming field 'aspect_ratio_allowed' is true→
783		    (crtc_req->mode.flags & DRM_MODE_FLAG_PIC_AR_MASK(0x0F<<19)) != DRM_MODE_FLAG_PIC_AR_NONE(0<<19)) {
784			DRM_DEBUG_KMS("Unexpected aspect-ratio flag bits\n")___drm_dbg(((void *)0), DRM_UT_KMS, "Unexpected aspect-ratio flag bits\n"
);
785			ret = -EINVAL22;
786			goto out;
787		}
788 
789 
790		ret = drm_mode_convert_umode(dev, mode, &crtc_req->mode);
791		if (ret) {
22
←
Assuming 'ret' is 0→
23
←
Taking false branch→
792			DRM_DEBUG_KMS("Invalid mode (ret=%d, status=%s)\n",___drm_dbg(((void *)0), DRM_UT_KMS, "Invalid mode (ret=%d, status=%s)\n"
, ret, drm_get_mode_status_name(mode->status))
793				      ret, drm_get_mode_status_name(mode->status))___drm_dbg(((void *)0), DRM_UT_KMS, "Invalid mode (ret=%d, status=%s)\n"
, ret, drm_get_mode_status_name(mode->status));
794			drm_mode_debug_printmodeline(mode);
795			goto out;
796		}
797 
798		/*
799		 * Check whether the primary plane supports the fb pixel format.
800		 * Drivers not implementing the universal planes API use a
801		 * default formats list provided by the DRM core which doesn't
802		 * match real hardware capabilities. Skip the check in that
803		 * case.
804		 */
805		if (!plane->format_default) {
24
←
Assuming field 'format_default' is true→
25
←
Taking false branch→
806			ret = drm_plane_check_pixel_format(plane,
807							   fb->format->format,
808							   fb->modifier);
809			if (ret) {
810				DRM_DEBUG_KMS("Invalid pixel format %p4cc, modifier 0x%llx\n",___drm_dbg(((void *)0), DRM_UT_KMS, "Invalid pixel format %p4cc, modifier 0x%llx\n"
, &fb->format->format, fb->modifier)
811					      &fb->format->format,___drm_dbg(((void *)0), DRM_UT_KMS, "Invalid pixel format %p4cc, modifier 0x%llx\n"
, &fb->format->format, fb->modifier)
812					      fb->modifier)___drm_dbg(((void *)0), DRM_UT_KMS, "Invalid pixel format %p4cc, modifier 0x%llx\n"
, &fb->format->format, fb->modifier);
813				goto out;
814			}
815		}
816 
817		ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
26
←
Calling 'drm_crtc_check_viewport'→
29
←
Returning from 'drm_crtc_check_viewport'→
818					      mode, fb);
819		if (ret)
30
←
Assuming 'ret' is 0→
820			goto out;
821 
822	}
823 
824	if (crtc_req->count_connectors == 0 && mode) {
31
←
Assuming field 'count_connectors' is not equal to 0→
825		DRM_DEBUG_KMS("Count connectors is 0 but mode set\n")___drm_dbg(((void *)0), DRM_UT_KMS, "Count connectors is 0 but mode set\n"
);
826		ret = -EINVAL22;
827		goto out;
828	}
829 
830	if (crtc_req->count_connectors31.1
Field 'count_connectors' is > 0
31.1
Field 'count_connectors' is > 0
31.1
Field 'count_connectors' is > 0
 > 0 && (!mode31.2
'mode' is non-null
31.2
'mode' is non-null
31.2
'mode' is non-null
 || !fb31.3
'fb' is non-null
31.3
'fb' is non-null
31.3
'fb' is non-null
)) {
32
←
Taking false branch→
831		DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",___drm_dbg(((void *)0), DRM_UT_KMS, "Count connectors is %d but no mode or fb set\n"
, crtc_req->count_connectors)
832			  crtc_req->count_connectors)___drm_dbg(((void *)0), DRM_UT_KMS, "Count connectors is %d but no mode or fb set\n"
, crtc_req->count_connectors);
833		ret = -EINVAL22;
834		goto out;
835	}
836 
837	if (crtc_req->count_connectors32.1
Field 'count_connectors' is > 0
32.1
Field 'count_connectors' is > 0
32.1
Field 'count_connectors' is > 0
 > 0) {
33
←
Taking true branch→
838		u32 out_id;
839 
840		/* Avoid unbounded kernel memory allocation */
841		if (crtc_req->count_connectors > config->num_connector) {
34
←
Assuming field 'count_connectors' is <= field 'num_connector'→
35
←
Taking false branch→
842			ret = -EINVAL22;
843			goto out;
844		}
845 
846		connector_set = kmalloc_array(crtc_req->count_connectors,
36
←
Calling 'kmalloc_array'→
41
←
Returning from 'kmalloc_array'→
847					      sizeof(struct drm_connector *),
848					      GFP_KERNEL(0x0001 | 0x0004));
849		if (!connector_set) {
42
←
Assuming 'connector_set' is non-null→
43
←
Taking false branch→
850			ret = -ENOMEM12;
851			goto out;
852		}
853 
854		for (i = 0; i43.1
'i' is < field 'count_connectors'
43.1
'i' is < field 'count_connectors'
43.1
'i' is < field 'count_connectors'
 < crtc_req->count_connectors; i++) {
44
←
Loop condition is true.  Entering loop body→
855			connector_set[i] = NULL((void *)0);
856			set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
857			if (get_user(out_id, &set_connectors_ptr[i])-copyin(&set_connectors_ptr[i], &(out_id), sizeof(out_id
))) {
45
←
Assuming the condition is true→
46
←
Taking true branch→
858				ret = -EFAULT14;
859				goto out;
47
←
Control jumps to line 891→
860			}
861 
862			connector = drm_connector_lookup(dev, file_priv, out_id);
863			if (!connector) {
864				DRM_DEBUG_KMS("Connector id %d unknown\n",___drm_dbg(((void *)0), DRM_UT_KMS, "Connector id %d unknown\n"
, out_id)
865						out_id)___drm_dbg(((void *)0), DRM_UT_KMS, "Connector id %d unknown\n"
, out_id);
866				ret = -ENOENT2;
867				goto out;
868			}
869			DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",___drm_dbg(((void *)0), DRM_UT_KMS, "[CONNECTOR:%d:%s]\n", connector
->base.id, connector->name)
870					connector->base.id,___drm_dbg(((void *)0), DRM_UT_KMS, "[CONNECTOR:%d:%s]\n", connector
->base.id, connector->name)
871					connector->name)___drm_dbg(((void *)0), DRM_UT_KMS, "[CONNECTOR:%d:%s]\n", connector
->base.id, connector->name);
872 
873			connector_set[i] = connector;
874		}
875	}
876 
877	set.crtc = crtc;
878	set.x = crtc_req->x;
879	set.y = crtc_req->y;
880	set.mode = mode;
881	set.connectors = connector_set;
882	set.num_connectors = crtc_req->count_connectors;
883	set.fb = fb;
884 
885	if (drm_drv_uses_atomic_modeset(dev))
886		ret = crtc->funcs->set_config(&set, &ctx);
887	else
888		ret = __drm_mode_set_config_internal(&set, &ctx);
889 
890out:
891	if (fb47.1
'fb' is non-null
47.1
'fb' is non-null
47.1
'fb' is non-null
)
48
←
Taking true branch→
892		drm_framebuffer_put(fb);
893 
894	if (connector_set48.1
'connector_set' is non-null
48.1
'connector_set' is non-null
48.1
'connector_set' is non-null
) {
49
←
Taking true branch→
895		for (i = 0; i49.1
'i' is < field 'count_connectors'
49.1
'i' is < field 'count_connectors'
49.1
'i' is < field 'count_connectors'
 < crtc_req->count_connectors; i++) {
50
←
Loop condition is true.  Entering loop body→
52
←
The value 1 is assigned to 'i'→
53
←
Assuming 'i' is < field 'count_connectors'→
54
←
Loop condition is true.  Entering loop body→
896			if (connector_set[i])
51
←
Taking false branch→
55
←
Branch condition evaluates to a garbage value
897				drm_connector_put(connector_set[i]);
898		}
899	}
900	kfree(connector_set);
901	drm_mode_destroy(dev, mode);
902 
903	/* In case we need to retry... */
904	connector_set = NULL((void *)0);
905	fb = NULL((void *)0);
906	mode = NULL((void *)0);
907 
908	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret)modeset_lock_fail: if (ret == -11) { ret = drm_modeset_backoff
(&ctx); if (!ret) goto modeset_lock_retry; } drm_modeset_drop_locks
(&ctx); drm_modeset_acquire_fini(&ctx); if (!drm_drv_uses_atomic_modeset
(dev)) rw_exit_write(&dev->mode_config.mutex);;
909 
910	return ret;
911}
912 
913int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
914			       struct drm_property *property,
915			       uint64_t value)
916{
917	int ret = -EINVAL22;
918	struct drm_crtc *crtc = obj_to_crtc(obj)({ const __typeof( ((struct drm_crtc *)0)->base ) *__mptr =
 (obj); (struct drm_crtc *)( (char *)__mptr - __builtin_offsetof
(struct drm_crtc, base) );});
919 
920	if (crtc->funcs->set_property)
921		ret = crtc->funcs->set_property(crtc, property, value);
922	if (!ret)
923		drm_object_property_set_value(obj, property, value);
924 
925	return ret;
926}
927 
928/**
929 * drm_crtc_create_scaling_filter_property - create a new scaling filter
930 * property
931 *
932 * @crtc: drm CRTC
933 * @supported_filters: bitmask of supported scaling filters, must include
934 *		       BIT(DRM_SCALING_FILTER_DEFAULT).
935 *
936 * This function lets driver to enable the scaling filter property on a given
937 * CRTC.
938 *
939 * RETURNS:
940 * Zero for success or -errno
941 */
942int drm_crtc_create_scaling_filter_property(struct drm_crtc *crtc,
943					    unsigned int supported_filters)
944{
945	struct drm_property *prop =
946		drm_create_scaling_filter_prop(crtc->dev, supported_filters);
947 
948	if (IS_ERR(prop))
949		return PTR_ERR(prop);
950 
951	drm_object_attach_property(&crtc->base, prop,
952				   DRM_SCALING_FILTER_DEFAULT);
953	crtc->scaling_filter_property = prop;
954 
955	return 0;
956}
957EXPORT_SYMBOL(drm_crtc_create_scaling_filter_property);

←

/usr/src/sys/dev/pci/drm/include/drm/drm_crtc.h

→

1/*
* Copyright © 2006 Keith Packard
* Copyright © 2007-2008 Dave Airlie
* Copyright © 2007-2008 Intel Corporation
*   Jesse Barnes <jesse.barnes@intel.com>
*
* 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, sublicense,
* 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
*/
25#ifndef __DRM_CRTC_H__
26#define __DRM_CRTC_H__

28#include <linux/spinlock.h>
29#include <linux/types.h>
30#include <drm/drm_modeset_lock.h>
31#include <drm/drm_mode_object.h>
32#include <drm/drm_modes.h>
33#include <drm/drm_device.h>
34#include <drm/drm_plane.h>
35#include <drm/drm_debugfs_crc.h>
36#include <drm/drm_mode_config.h>

38struct drm_connector;
39struct drm_device;
40struct drm_framebuffer;
41struct drm_mode_set;
42struct drm_file;
43struct drm_printer;
44struct drm_self_refresh_data;
45struct device_node;
46struct edid;

48static inline int64_t U642I64(uint64_t val)
49{
return (int64_t)*((int64_t *)&val);
51}
52static inline uint64_t I642U64(int64_t val)
53{
return (uint64_t)*((uint64_t *)&val);
55}

57struct drm_crtc;
58struct drm_pending_vblank_event;
59struct drm_plane;
60struct drm_bridge;
61struct drm_atomic_state;

63struct drm_crtc_helper_funcs;
64struct drm_plane_helper_funcs;

66/**
* struct drm_crtc_state - mutable CRTC state
*
* Note that the distinction between @enable and @active is rather subtle:
* Flipping @active while @enable is set without changing anything else may
* never return in a failure from the &drm_mode_config_funcs.atomic_check
* callback. Userspace assumes that a DPMS On will always succeed. In other
* words: @enable controls resource assignment, @active controls the actual
* hardware state.
*
* The three booleans active_changed, connectors_changed and mode_changed are
* intended to indicate whether a full modeset is needed, rather than strictly
* describing what has changed in a commit. See also:
* drm_atomic_crtc_needs_modeset()
*
* WARNING: Transitional helpers (like drm_helper_crtc_mode_set() or
* drm_helper_crtc_mode_set_base()) do not maintain many of the derived control
* state like @plane_mask so drivers not converted over to atomic helpers should
* not rely on these being accurate!
*/
86struct drm_crtc_state {
/** @crtc: backpointer to the CRTC */
struct drm_crtc *crtc;

/**
* @enable: Whether the CRTC should be enabled, gates all other state.
* This controls reservations of shared resources. Actual hardware state
* is controlled by @active.
*/
bool_Bool enable;

/**
* @active: Whether the CRTC is actively displaying (used for DPMS).
* Implies that @enable is set. The driver must not release any shared
* resources if @active is set to false but @enable still true, because
* userspace expects that a DPMS ON always succeeds.
*
* Hence drivers must not consult @active in their various
* &drm_mode_config_funcs.atomic_check callback to reject an atomic
* commit. They can consult it to aid in the computation of derived
* hardware state, since even in the DPMS OFF state the display hardware
* should be as much powered down as when the CRTC is completely
* disabled through setting @enable to false.
*/
bool_Bool active;

/**
* @planes_changed: Planes on this crtc are updated. Used by the atomic
* helpers and drivers to steer the atomic commit control flow.
*/
bool_Bool planes_changed : 1;

/**
* @mode_changed: @mode or @enable has been changed. Used by the atomic
* helpers and drivers to steer the atomic commit control flow. See also
* drm_atomic_crtc_needs_modeset().
*
* Drivers are supposed to set this for any CRTC state changes that
* require a full modeset. They can also reset it to false if e.g. a
* @mode change can be done without a full modeset by only changing
* scaler settings.
*/
bool_Bool mode_changed : 1;

/**
* @active_changed: @active has been toggled. Used by the atomic
* helpers and drivers to steer the atomic commit control flow. See also
* drm_atomic_crtc_needs_modeset().
*/
bool_Bool active_changed : 1;

/**
* @connectors_changed: Connectors to this crtc have been updated,
* either in their state or routing. Used by the atomic
* helpers and drivers to steer the atomic commit control flow. See also
* drm_atomic_crtc_needs_modeset().
*
* Drivers are supposed to set this as-needed from their own atomic
* check code, e.g. from &drm_encoder_helper_funcs.atomic_check
*/
bool_Bool connectors_changed : 1;
/**
* @zpos_changed: zpos values of planes on this crtc have been updated.
* Used by the atomic helpers and drivers to steer the atomic commit
* control flow.
*/
bool_Bool zpos_changed : 1;
/**
* @color_mgmt_changed: Color management properties have changed
* (@gamma_lut, @degamma_lut or @ctm). Used by the atomic helpers and
* drivers to steer the atomic commit control flow.
*/
bool_Bool color_mgmt_changed : 1;

/**
* @no_vblank:
*
* Reflects the ability of a CRTC to send VBLANK events. This state
* usually depends on the pipeline configuration. If set to true, DRM
* atomic helpers will send out a fake VBLANK event during display
* updates after all hardware changes have been committed. This is
* implemented in drm_atomic_helper_fake_vblank().
*
* One usage is for drivers and/or hardware without support for VBLANK
* interrupts. Such drivers typically do not initialize vblanking
* (i.e., call drm_vblank_init() with the number of CRTCs). For CRTCs
* without initialized vblanking, this field is set to true in
* drm_atomic_helper_check_modeset(), and a fake VBLANK event will be
* send out on each update of the display pipeline by
* drm_atomic_helper_fake_vblank().
*
* Another usage is CRTCs feeding a writeback connector operating in
* oneshot mode. In this case the fake VBLANK event is only generated
* when a job is queued to the writeback connector, and we want the
* core to fake VBLANK events when this part of the pipeline hasn't
* changed but others had or when the CRTC and connectors are being
* disabled.
*
* __drm_atomic_helper_crtc_duplicate_state() will not reset the value
* from the current state, the CRTC driver is then responsible for
* updating this field when needed.
*
* Note that the combination of &drm_crtc_state.event == NULL and
* &drm_crtc_state.no_blank == true is valid and usually used when the
* writeback connector attached to the CRTC has a new job queued. In
* this case the driver will send the VBLANK event on its own when the
* writeback job is complete.
*/
bool_Bool no_vblank : 1;

/**
* @plane_mask: Bitmask of drm_plane_mask(plane) of planes attached to
* this CRTC.
*/
u32 plane_mask;

/**
* @connector_mask: Bitmask of drm_connector_mask(connector) of
* connectors attached to this CRTC.
*/
u32 connector_mask;

/**
* @encoder_mask: Bitmask of drm_encoder_mask(encoder) of encoders
* attached to this CRTC.
*/
u32 encoder_mask;

/**
* @adjusted_mode:
*
* Internal display timings which can be used by the driver to handle
* differences between the mode requested by userspace in @mode and what
* is actually programmed into the hardware.
*
* For drivers using &drm_bridge, this stores hardware display timings
* used between the CRTC and the first bridge. For other drivers, the
* meaning of the adjusted_mode field is purely driver implementation
* defined information, and will usually be used to store the hardware
* display timings used between the CRTC and encoder blocks.
*/
struct drm_display_mode adjusted_mode;

/**
* @mode:
*
* Display timings requested by userspace. The driver should try to
* match the refresh rate as close as possible (but note that it's
* undefined what exactly is close enough, e.g. some of the HDMI modes
* only differ in less than 1% of the refresh rate). The active width
* and height as observed by userspace for positioning planes must match
* exactly.
*
* For external connectors where the sink isn't fixed (like with a
* built-in panel), this mode here should match the physical mode on the
* wire to the last details (i.e. including sync polarities and
* everything).
*/
struct drm_display_mode mode;

/**
* @mode_blob: &drm_property_blob for @mode, for exposing the mode to
* atomic userspace.
*/
struct drm_property_blob *mode_blob;

/**
* @degamma_lut:
*
* Lookup table for converting framebuffer pixel data before apply the
* color conversion matrix @ctm. See drm_crtc_enable_color_mgmt(). The
* blob (if not NULL) is an array of &struct drm_color_lut.
*/
struct drm_property_blob *degamma_lut;

/**
* @ctm:
*
* Color transformation matrix. See drm_crtc_enable_color_mgmt(). The
* blob (if not NULL) is a &struct drm_color_ctm.
*/
struct drm_property_blob *ctm;

/**
* @gamma_lut:
*
* Lookup table for converting pixel data after the color conversion
* matrix @ctm.  See drm_crtc_enable_color_mgmt(). The blob (if not
* NULL) is an array of &struct drm_color_lut.
*
* Note that for mostly historical reasons stemming from Xorg heritage,
* this is also used to store the color map (also sometimes color lut,
* CLUT or color palette) for indexed formats like DRM_FORMAT_C8.
*/
struct drm_property_blob *gamma_lut;

/**
* @target_vblank:
*
* Target vertical blank period when a page flip
* should take effect.
*/
u32 target_vblank;

/**
* @async_flip:
*
* This is set when DRM_MODE_PAGE_FLIP_ASYNC is set in the legacy
* PAGE_FLIP IOCTL. It's not wired up for the atomic IOCTL itself yet.
*/
bool_Bool async_flip;

/**
* @vrr_enabled:
*
* Indicates if variable refresh rate should be enabled for the CRTC.
* Support for the requested vrr state will depend on driver and
* hardware capabiltiy - lacking support is not treated as failure.
*/
bool_Bool vrr_enabled;

/**
* @self_refresh_active:
*
* Used by the self refresh helpers to denote when a self refresh
* transition is occurring. This will be set on enable/disable callbacks
* when self refresh is being enabled or disabled. In some cases, it may
* not be desirable to fully shut off the crtc during self refresh.
* CRTC's can inspect this flag and determine the best course of action.
*/
bool_Bool self_refresh_active;

/**
* @scaling_filter:
*
* Scaling filter to be applied
*/
enum drm_scaling_filter scaling_filter;

/**
* @event:
*
* Optional pointer to a DRM event to signal upon completion of the
* state update. The driver must send out the event when the atomic
* commit operation completes. There are two cases:
*
*  - The event is for a CRTC which is being disabled through this
*    atomic commit. In that case the event can be send out any time
*    after the hardware has stopped scanning out the current
*    framebuffers. It should contain the timestamp and counter for the
*    last vblank before the display pipeline was shut off. The simplest
*    way to achieve that is calling drm_crtc_send_vblank_event()
*    somewhen after drm_crtc_vblank_off() has been called.
*
*  - For a CRTC which is enabled at the end of the commit (even when it
*    undergoes an full modeset) the vblank timestamp and counter must
*    be for the vblank right before the first frame that scans out the
*    new set of buffers. Again the event can only be sent out after the
*    hardware has stopped scanning out the old buffers.
*
*  - Events for disabled CRTCs are not allowed, and drivers can ignore
*    that case.
*
* For very simple hardware without VBLANK interrupt, enabling
* &struct drm_crtc_state.no_vblank makes DRM's atomic commit helpers
* send a fake VBLANK event at the end of the display update after all
* hardware changes have been applied. See
* drm_atomic_helper_fake_vblank().
*
* For more complex hardware this
* can be handled by the drm_crtc_send_vblank_event() function,
* which the driver should call on the provided event upon completion of
* the atomic commit. Note that if the driver supports vblank signalling
* and timestamping the vblank counters and timestamps must agree with
* the ones returned from page flip events. With the current vblank
* helper infrastructure this can be achieved by holding a vblank
* reference while the page flip is pending, acquired through
* drm_crtc_vblank_get() and released with drm_crtc_vblank_put().
* Drivers are free to implement their own vblank counter and timestamp
* tracking though, e.g. if they have accurate timestamp registers in
* hardware.
*
* For hardware which supports some means to synchronize vblank
* interrupt delivery with committing display state there's also
* drm_crtc_arm_vblank_event(). See the documentation of that function
* for a detailed discussion of the constraints it needs to be used
* safely.
*
* If the device can't notify of flip completion in a race-free way
* at all, then the event should be armed just after the page flip is
* committed. In the worst case the driver will send the event to
* userspace one frame too late. This doesn't allow for a real atomic
* update, but it should avoid tearing.
*/
struct drm_pending_vblank_event *event;

/**
* @commit:
*
* This tracks how the commit for this update proceeds through the
* various phases. This is never cleared, except when we destroy the
* state, so that subsequent commits can synchronize with previous ones.
*/
struct drm_crtc_commit *commit;

/** @state: backpointer to global drm_atomic_state */
struct drm_atomic_state *state;
393};

395/**
* struct drm_crtc_funcs - control CRTCs for a given device
*
* The drm_crtc_funcs structure is the central CRTC management structure
* in the DRM.  Each CRTC controls one or more connectors (note that the name
* CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc.
* connectors, not just CRTs).
*
* Each driver is responsible for filling out this structure at startup time,
* in addition to providing other modesetting features, like i2c and DDC
* bus accessors.
*/
407struct drm_crtc_funcs {
/**
* @reset:
*
* Reset CRTC hardware and software state to off. This function isn't
* called by the core directly, only through drm_mode_config_reset().
* It's not a helper hook only for historical reasons.
*
* Atomic drivers can use drm_atomic_helper_crtc_reset() to reset
* atomic state using this hook.
*/
void (*reset)(struct drm_crtc *crtc);

/**
* @cursor_set:
*
* Update the cursor image. The cursor position is relative to the CRTC
* and can be partially or fully outside of the visible area.
*
* Note that contrary to all other KMS functions the legacy cursor entry
* points don't take a framebuffer object, but instead take directly a
* raw buffer object id from the driver's buffer manager (which is
* either GEM or TTM for current drivers).
*
* This entry point is deprecated, drivers should instead implement
* universal plane support and register a proper cursor plane using
* drm_crtc_init_with_planes().
*
* This callback is optional
*
* RETURNS:
*
* 0 on success or a negative error code on failure.
*/
int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv,
	  uint32_t handle, uint32_t width, uint32_t height);

/**
* @cursor_set2:
*
* Update the cursor image, including hotspot information. The hotspot
* must not affect the cursor position in CRTC coordinates, but is only
* meant as a hint for virtualized display hardware to coordinate the
* guests and hosts cursor position. The cursor hotspot is relative to
* the cursor image. Otherwise this works exactly like @cursor_set.
*
* This entry point is deprecated, drivers should instead implement
* universal plane support and register a proper cursor plane using
* drm_crtc_init_with_planes().
*
* This callback is optional.
*
* RETURNS:
*
* 0 on success or a negative error code on failure.
*/
int (*cursor_set2)(struct drm_crtc *crtc, struct drm_file *file_priv,
	   uint32_t handle, uint32_t width, uint32_t height,
	   int32_t hot_x, int32_t hot_y);

/**
* @cursor_move:
*
* Update the cursor position. The cursor does not need to be visible
* when this hook is called.
*
* This entry point is deprecated, drivers should instead implement
* universal plane support and register a proper cursor plane using
* drm_crtc_init_with_planes().
*
* This callback is optional.
*
* RETURNS:
*
* 0 on success or a negative error code on failure.
*/
int (*cursor_move)(struct drm_crtc *crtc, int x, int y);

/**
* @gamma_set:
*
* Set gamma on the CRTC.
*
* This callback is optional.
*
* Atomic drivers who want to support gamma tables should implement the
* atomic color management support, enabled by calling
* drm_crtc_enable_color_mgmt(), which then supports the legacy gamma
* interface through the drm_atomic_helper_legacy_gamma_set()
* compatibility implementation.
*/
int (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
	 uint32_t size,
	 struct drm_modeset_acquire_ctx *ctx);

/**
* @destroy:
*
* Clean up CRTC resources. This is only called at driver unload time
* through drm_mode_config_cleanup() since a CRTC cannot be hotplugged
* in DRM.
*/
void (*destroy)(struct drm_crtc *crtc);

/**
* @set_config:
*
* This is the main legacy entry point to change the modeset state on a
* CRTC. All the details of the desired configuration are passed in a
* &struct drm_mode_set - see there for details.
*
* Drivers implementing atomic modeset should use
* drm_atomic_helper_set_config() to implement this hook.
*
* RETURNS:
*
* 0 on success or a negative error code on failure.
*/
int (*set_config)(struct drm_mode_set *set,
	  struct drm_modeset_acquire_ctx *ctx);

/**
* @page_flip:
*
* Legacy entry point to schedule a flip to the given framebuffer.
*
* Page flipping is a synchronization mechanism that replaces the frame
* buffer being scanned out by the CRTC with a new frame buffer during
* vertical blanking, avoiding tearing (except when requested otherwise
* through the DRM_MODE_PAGE_FLIP_ASYNC flag). When an application
* requests a page flip the DRM core verifies that the new frame buffer
* is large enough to be scanned out by the CRTC in the currently
* configured mode and then calls this hook with a pointer to the new
* frame buffer.
*
* The driver must wait for any pending rendering to the new framebuffer
* to complete before executing the flip. It should also wait for any
* pending rendering from other drivers if the underlying buffer is a
* shared dma-buf.
*
* An application can request to be notified when the page flip has
* completed. The drm core will supply a &struct drm_event in the event
* parameter in this case. This can be handled by the
* drm_crtc_send_vblank_event() function, which the driver should call on
* the provided event upon completion of the flip. Note that if
* the driver supports vblank signalling and timestamping the vblank
* counters and timestamps must agree with the ones returned from page
* flip events. With the current vblank helper infrastructure this can
* be achieved by holding a vblank reference while the page flip is
* pending, acquired through drm_crtc_vblank_get() and released with
* drm_crtc_vblank_put(). Drivers are free to implement their own vblank
* counter and timestamp tracking though, e.g. if they have accurate
* timestamp registers in hardware.
*
* This callback is optional.
*
* NOTE:
*
* Very early versions of the KMS ABI mandated that the driver must
* block (but not reject) any rendering to the old framebuffer until the
* flip operation has completed and the old framebuffer is no longer
* visible. This requirement has been lifted, and userspace is instead
* expected to request delivery of an event and wait with recycling old
* buffers until such has been received.
*
* RETURNS:
*
* 0 on success or a negative error code on failure. Note that if a
* page flip operation is already pending the callback should return
* -EBUSY. Pageflips on a disabled CRTC (either by setting a NULL mode
* or just runtime disabled through DPMS respectively the new atomic
* "ACTIVE" state) should result in an -EINVAL error code. Note that
* drm_atomic_helper_page_flip() checks this already for atomic drivers.
*/
int (*page_flip)(struct drm_crtc *crtc,
	 struct drm_framebuffer *fb,
	 struct drm_pending_vblank_event *event,
	 uint32_t flags,
	 struct drm_modeset_acquire_ctx *ctx);

/**
* @page_flip_target:
*
* Same as @page_flip but with an additional parameter specifying the
* absolute target vertical blank period (as reported by
* drm_crtc_vblank_count()) when the flip should take effect.
*
* Note that the core code calls drm_crtc_vblank_get before this entry
* point, and will call drm_crtc_vblank_put if this entry point returns
* any non-0 error code. It's the driver's responsibility to call
* drm_crtc_vblank_put after this entry point returns 0, typically when
* the flip completes.
*/
int (*page_flip_target)(struct drm_crtc *crtc,
		struct drm_framebuffer *fb,
		struct drm_pending_vblank_event *event,
		uint32_t flags, uint32_t target,
		struct drm_modeset_acquire_ctx *ctx);

/**
* @set_property:
*
* This is the legacy entry point to update a property attached to the
* CRTC.
*
* This callback is optional if the driver does not support any legacy
* driver-private properties. For atomic drivers it is not used because
* property handling is done entirely in the DRM core.
*
* RETURNS:
*
* 0 on success or a negative error code on failure.
*/
int (*set_property)(struct drm_crtc *crtc,
	    struct drm_property *property, uint64_t val);

/**
* @atomic_duplicate_state:
*
* Duplicate the current atomic state for this CRTC and return it.
* The core and helpers guarantee that any atomic state duplicated with
* this hook and still owned by the caller (i.e. not transferred to the
* driver by calling &drm_mode_config_funcs.atomic_commit) will be
* cleaned up by calling the @atomic_destroy_state hook in this
* structure.
*
* This callback is mandatory for atomic drivers.
*
* Atomic drivers which don't subclass &struct drm_crtc_state should use
* drm_atomic_helper_crtc_duplicate_state(). Drivers that subclass the
* state structure to extend it with driver-private state should use
* __drm_atomic_helper_crtc_duplicate_state() to make sure shared state is
* duplicated in a consistent fashion across drivers.
*
* It is an error to call this hook before &drm_crtc.state has been
* initialized correctly.
*
* NOTE:
*
* If the duplicate state references refcounted resources this hook must
* acquire a reference for each of them. The driver must release these
* references again in @atomic_destroy_state.
*
* RETURNS:
*
* Duplicated atomic state or NULL when the allocation failed.
*/
struct drm_crtc_state *(*atomic_duplicate_state)(struct drm_crtc *crtc);

/**
* @atomic_destroy_state:
*
* Destroy a state duplicated with @atomic_duplicate_state and release
* or unreference all resources it references
*
* This callback is mandatory for atomic drivers.
*/
void (*atomic_destroy_state)(struct drm_crtc *crtc,
		     struct drm_crtc_state *state);

/**
* @atomic_set_property:
*
* Decode a driver-private property value and store the decoded value
* into the passed-in state structure. Since the atomic core decodes all
* standardized properties (even for extensions beyond the core set of
* properties which might not be implemented by all drivers) this
* requires drivers to subclass the state structure.
*
* Such driver-private properties should really only be implemented for
* truly hardware/vendor specific state. Instead it is preferred to
* standardize atomic extension and decode the properties used to expose
* such an extension in the core.
*
* Do not call this function directly, use
* drm_atomic_crtc_set_property() instead.
*
* This callback is optional if the driver does not support any
* driver-private atomic properties.
*
* NOTE:
*
* This function is called in the state assembly phase of atomic
* modesets, which can be aborted for any reason (including on
* userspace's request to just check whether a configuration would be
* possible). Drivers MUST NOT touch any persistent state (hardware or
* software) or data structures except the passed in @state parameter.
*
* Also since userspace controls in which order properties are set this
* function must not do any input validation (since the state update is
* incomplete and hence likely inconsistent). Instead any such input
* validation must be done in the various atomic_check callbacks.
*
* RETURNS:
*
* 0 if the property has been found, -EINVAL if the property isn't
* implemented by the driver (which should never happen, the core only
* asks for properties attached to this CRTC). No other validation is
* allowed by the driver. The core already checks that the property
* value is within the range (integer, valid enum value, ...) the driver
* set when registering the property.
*/
int (*atomic_set_property)(struct drm_crtc *crtc,
		   struct drm_crtc_state *state,
		   struct drm_property *property,
		   uint64_t val);
/**
* @atomic_get_property:
*
* Reads out the decoded driver-private property. This is used to
* implement the GETCRTC IOCTL.
*
* Do not call this function directly, use
* drm_atomic_crtc_get_property() instead.
*
* This callback is optional if the driver does not support any
* driver-private atomic properties.
*
* RETURNS:
*
* 0 on success, -EINVAL if the property isn't implemented by the
* driver (which should never happen, the core only asks for
* properties attached to this CRTC).
*/
int (*atomic_get_property)(struct drm_crtc *crtc,
		   const struct drm_crtc_state *state,
		   struct drm_property *property,
		   uint64_t *val);

/**
* @late_register:
*
* This optional hook can be used to register additional userspace
* interfaces attached to the crtc like debugfs interfaces.
* It is called late in the driver load sequence from drm_dev_register().
* Everything added from this callback should be unregistered in
* the early_unregister callback.
*
* Returns:
*
* 0 on success, or a negative error code on failure.
*/
int (*late_register)(struct drm_crtc *crtc);

/**
* @early_unregister:
*
* This optional hook should be used to unregister the additional
* userspace interfaces attached to the crtc from
* @late_register. It is called from drm_dev_unregister(),
* early in the driver unload sequence to disable userspace access
* before data structures are torndown.
*/
void (*early_unregister)(struct drm_crtc *crtc);

/**
* @set_crc_source:
*
* Changes the source of CRC checksums of frames at the request of
* userspace, typically for testing purposes. The sources available are
* specific of each driver and a %NULL value indicates that CRC
* generation is to be switched off.
*
* When CRC generation is enabled, the driver should call
* drm_crtc_add_crc_entry() at each frame, providing any information
* that characterizes the frame contents in the crcN arguments, as
* provided from the configured source. Drivers must accept an "auto"
* source name that will select a default source for this CRTC.
*
* This may trigger an atomic modeset commit if necessary, to enable CRC
* generation.
*
* Note that "auto" can depend upon the current modeset configuration,
* e.g. it could pick an encoder or output specific CRC sampling point.
*
* This callback is optional if the driver does not support any CRC
* generation functionality.
*
* RETURNS:
*
* 0 on success or a negative error code on failure.
*/
int (*set_crc_source)(struct drm_crtc *crtc, const char *source);

/**
* @verify_crc_source:
*
* verifies the source of CRC checksums of frames before setting the
* source for CRC and during crc open. Source parameter can be NULL
* while disabling crc source.
*
* This callback is optional if the driver does not support any CRC
* generation functionality.
*
* RETURNS:
*
* 0 on success or a negative error code on failure.
*/
int (*verify_crc_source)(struct drm_crtc *crtc, const char *source,
		 size_t *values_cnt);
/**
* @get_crc_sources:
*
* Driver callback for getting a list of all the available sources for
* CRC generation. This callback depends upon verify_crc_source, So
* verify_crc_source callback should be implemented before implementing
* this. Driver can pass full list of available crc sources, this
* callback does the verification on each crc-source before passing it
* to userspace.
*
* This callback is optional if the driver does not support exporting of
* possible CRC sources list.
*
* RETURNS:
*
* a constant character pointer to the list of all the available CRC
* sources. On failure driver should return NULL. count should be
* updated with number of sources in list. if zero we don't process any
* source from the list.
*/
const char *const *(*get_crc_sources)(struct drm_crtc *crtc,
			      size_t *count);

/**
* @atomic_print_state:
*
* If driver subclasses &struct drm_crtc_state, it should implement
* this optional hook for printing additional driver specific state.
*
* Do not call this directly, use drm_atomic_crtc_print_state()
* instead.
*/
void (*atomic_print_state)(struct drm_printer *p,
		   const struct drm_crtc_state *state);

/**
* @get_vblank_counter:
*
* Driver callback for fetching a raw hardware vblank counter for the
* CRTC. It's meant to be used by new drivers as the replacement of
* &drm_driver.get_vblank_counter hook.
*
* This callback is optional. If a device doesn't have a hardware
* counter, the driver can simply leave the hook as NULL. The DRM core
* will account for missed vblank events while interrupts where disabled
* based on system timestamps.
*
* Wraparound handling and loss of events due to modesetting is dealt
* with in the DRM core code, as long as drivers call
* drm_crtc_vblank_off() and drm_crtc_vblank_on() when disabling or
* enabling a CRTC.
*
* See also &drm_device.vblank_disable_immediate and
* &drm_device.max_vblank_count.
*
* Returns:
*
* Raw vblank counter value.
*/
u32 (*get_vblank_counter)(struct drm_crtc *crtc);

/**
* @enable_vblank:
*
* Enable vblank interrupts for the CRTC. It's meant to be used by
* new drivers as the replacement of &drm_driver.enable_vblank hook.
*
* Returns:
*
* Zero on success, appropriate errno if the vblank interrupt cannot
* be enabled.
*/
int (*enable_vblank)(struct drm_crtc *crtc);

/**
* @disable_vblank:
*
* Disable vblank interrupts for the CRTC. It's meant to be used by
* new drivers as the replacement of &drm_driver.disable_vblank hook.
*/
void (*disable_vblank)(struct drm_crtc *crtc);

/**
* @get_vblank_timestamp:
*
* Called by drm_get_last_vbltimestamp(). Should return a precise
* timestamp when the most recent vblank interval ended or will end.
*
* Specifically, the timestamp in @vblank_time should correspond as
* closely as possible to the time when the first video scanline of
* the video frame after the end of vblank will start scanning out,
* the time immediately after end of the vblank interval. If the
* @crtc is currently inside vblank, this will be a time in the future.
* If the @crtc is currently scanning out a frame, this will be the
* past start time of the current scanout. This is meant to adhere
* to the OpenML OML_sync_control extension specification.
*
* Parameters:
*
* crtc:
*     CRTC for which timestamp should be returned.
* max_error:
*     Maximum allowable timestamp error in nanoseconds.
*     Implementation should strive to provide timestamp
*     with an error of at most max_error nanoseconds.
*     Returns true upper bound on error for timestamp.
* vblank_time:
*     Target location for returned vblank timestamp.
* in_vblank_irq:
*     True when called from drm_crtc_handle_vblank().  Some drivers
*     need to apply some workarounds for gpu-specific vblank irq quirks
*     if flag is set.
*
* Returns:
*
* True on success, false on failure, which means the core should
* fallback to a simple timestamp taken in drm_crtc_handle_vblank().
*/
bool_Bool (*get_vblank_timestamp)(struct drm_crtc *crtc,
		     int *max_error,
		     ktime_t *vblank_time,
		     bool_Bool in_vblank_irq);
929};

931/**
* struct drm_crtc - central CRTC control structure
*
* Each CRTC may have one or more connectors associated with it.  This structure
* allows the CRTC to be controlled.
*/
937struct drm_crtc {
/** @dev: parent DRM device */
struct drm_device *dev;
/** @port: OF node used by drm_of_find_possible_crtcs(). */
struct device_node *port;
/**
* @head:
*
* List of all CRTCs on @dev, linked from &drm_mode_config.crtc_list.
* Invariant over the lifetime of @dev and therefore does not need
* locking.
*/
struct list_head head;

/** @name: human readable name, can be overwritten by the driver */
char *name;

/**
* @mutex:
*
* This provides a read lock for the overall CRTC state (mode, dpms
* state, ...) and a write lock for everything which can be update
* without a full modeset (fb, cursor data, CRTC properties ...). A full
* modeset also need to grab &drm_mode_config.connection_mutex.
*
* For atomic drivers specifically this protects @state.
*/
struct drm_modeset_lock mutex;

/** @base: base KMS object for ID tracking etc. */
struct drm_mode_object base;

/**
* @primary:
* Primary plane for this CRTC. Note that this is only
* relevant for legacy IOCTL, it specifies the plane implicitly used by
* the SETCRTC and PAGE_FLIP IOCTLs. It does not have any significance
* beyond that.
*/
struct drm_plane *primary;

/**
* @cursor:
* Cursor plane for this CRTC. Note that this is only relevant for
* legacy IOCTL, it specifies the plane implicitly used by the SETCURSOR
* and SETCURSOR2 IOCTLs. It does not have any significance
* beyond that.
*/
struct drm_plane *cursor;

/**
* @index: Position inside the mode_config.list, can be used as an array
* index. It is invariant over the lifetime of the CRTC.
*/
unsigned index;

/**
* @cursor_x: Current x position of the cursor, used for universal
* cursor planes because the SETCURSOR IOCTL only can update the
* framebuffer without supplying the coordinates. Drivers should not use
* this directly, atomic drivers should look at &drm_plane_state.crtc_x
* of the cursor plane instead.
*/
int cursor_x;
/**
* @cursor_y: Current y position of the cursor, used for universal
* cursor planes because the SETCURSOR IOCTL only can update the
* framebuffer without supplying the coordinates. Drivers should not use
* this directly, atomic drivers should look at &drm_plane_state.crtc_y
* of the cursor plane instead.
*/
int cursor_y;

/**
* @enabled:
*
* Is this CRTC enabled? Should only be used by legacy drivers, atomic
* drivers should instead consult &drm_crtc_state.enable and
* &drm_crtc_state.active. Atomic drivers can update this by calling
* drm_atomic_helper_update_legacy_modeset_state().
*/
bool_Bool enabled;

/**
* @mode:
*
* Current mode timings. Should only be used by legacy drivers, atomic
* drivers should instead consult &drm_crtc_state.mode. Atomic drivers
* can update this by calling
* drm_atomic_helper_update_legacy_modeset_state().
*/
struct drm_display_mode mode;

/**
* @hwmode:
*
* Programmed mode in hw, after adjustments for encoders, crtc, panel
* scaling etc. Should only be used by legacy drivers, for high
* precision vblank timestamps in
* drm_crtc_vblank_helper_get_vblank_timestamp().
*
* Note that atomic drivers should not use this, but instead use
* &drm_crtc_state.adjusted_mode. And for high-precision timestamps
* drm_crtc_vblank_helper_get_vblank_timestamp() used
* &drm_vblank_crtc.hwmode,
* which is filled out by calling drm_calc_timestamping_constants().
*/
struct drm_display_mode hwmode;

/**
* @x:
* x position on screen. Should only be used by legacy drivers, atomic
* drivers should look at &drm_plane_state.crtc_x of the primary plane
* instead. Updated by calling
* drm_atomic_helper_update_legacy_modeset_state().
*/
int x;
/**
* @y:
* y position on screen. Should only be used by legacy drivers, atomic
* drivers should look at &drm_plane_state.crtc_y of the primary plane
* instead. Updated by calling
* drm_atomic_helper_update_legacy_modeset_state().
*/
int y;

/** @funcs: CRTC control functions */
const struct drm_crtc_funcs *funcs;

/**
* @gamma_size: Size of legacy gamma ramp reported to userspace. Set up
* by calling drm_mode_crtc_set_gamma_size().
*
* Note that atomic drivers need to instead use
* &drm_crtc_state.gamma_lut. See drm_crtc_enable_color_mgmt().
*/
uint32_t gamma_size;

/**
* @gamma_store: Gamma ramp values used by the legacy SETGAMMA and
* GETGAMMA IOCTls. Set up by calling drm_mode_crtc_set_gamma_size().
*
* Note that atomic drivers need to instead use
* &drm_crtc_state.gamma_lut. See drm_crtc_enable_color_mgmt().
*/
uint16_t *gamma_store;

/** @helper_private: mid-layer private data */
const struct drm_crtc_helper_funcs *helper_private;

/** @properties: property tracking for this CRTC */
struct drm_object_properties properties;

/**
* @scaling_filter_property: property to apply a particular filter while
* scaling.
*/
struct drm_property *scaling_filter_property;

/**
* @state:
*
* Current atomic state for this CRTC.
*
* This is protected by @mutex. Note that nonblocking atomic commits
* access the current CRTC state without taking locks. Either by going
* through the &struct drm_atomic_state pointers, see
* for_each_oldnew_crtc_in_state(), for_each_old_crtc_in_state() and
* for_each_new_crtc_in_state(). Or through careful ordering of atomic
* commit operations as implemented in the atomic helpers, see
* &struct drm_crtc_commit.
*/
struct drm_crtc_state *state;

/**
* @commit_list:
*
* List of &drm_crtc_commit structures tracking pending commits.
* Protected by @commit_lock. This list holds its own full reference,
* as does the ongoing commit.
*
* "Note that the commit for a state change is also tracked in
* &drm_crtc_state.commit. For accessing the immediately preceding
* commit in an atomic update it is recommended to just use that
* pointer in the old CRTC state, since accessing that doesn't need
* any locking or list-walking. @commit_list should only be used to
* stall for framebuffer cleanup that's signalled through
* &drm_crtc_commit.cleanup_done."
*/
struct list_head commit_list;

/**
* @commit_lock:
*
* Spinlock to protect @commit_list.
*/
spinlock_t commit_lock;

/**
* @debugfs_entry:
*
* Debugfs directory for this CRTC.
*/
struct dentry *debugfs_entry;

/**
* @crc:
*
* Configuration settings of CRC capture.
*/
struct drm_crtc_crc crc;

/**
* @fence_context:
*
* timeline context used for fence operations.
*/
unsigned int fence_context;

/**
* @fence_lock:
*
* spinlock to protect the fences in the fence_context.
*/
spinlock_t fence_lock;
/**
* @fence_seqno:
*
* Seqno variable used as monotonic counter for the fences
* created on the CRTC's timeline.
*/
unsigned long fence_seqno;

/**
* @timeline_name:
*
* The name of the CRTC's fence timeline.
*/
char timeline_name[32];

/**
* @self_refresh_data: Holds the state for the self refresh helpers
*
* Initialized via drm_self_refresh_helper_init().
*/
struct drm_self_refresh_data *self_refresh_data;
1183};

1185/**
* struct drm_mode_set - new values for a CRTC config change
* @fb: framebuffer to use for new config
* @crtc: CRTC whose configuration we're about to change
* @mode: mode timings to use
* @x: position of this CRTC relative to @fb
* @y: position of this CRTC relative to @fb
* @connectors: array of connectors to drive with this CRTC if possible
* @num_connectors: size of @connectors array
*
* This represents a modeset configuration for the legacy SETCRTC ioctl and is
* also used internally. Atomic drivers instead use &drm_atomic_state.
*/
1198struct drm_mode_set {
struct drm_framebuffer *fb;
struct drm_crtc *crtc;
struct drm_display_mode *mode;

uint32_t x;
uint32_t y;

struct drm_connector **connectors;
size_t num_connectors;
1208};

1210#define obj_to_crtc(x)({ const __typeof( ((struct drm_crtc *)0)->base ) *__mptr =
 (x); (struct drm_crtc *)( (char *)__mptr - __builtin_offsetof
(struct drm_crtc, base) );}) container_of(x, struct drm_crtc, base)({ const __typeof( ((struct drm_crtc *)0)->base ) *__mptr =
 (x); (struct drm_crtc *)( (char *)__mptr - __builtin_offsetof
(struct drm_crtc, base) );})

1212__printf(6, 7)__attribute__((__format__(__kprintf__,6,7)))
1213int drm_crtc_init_with_planes(struct drm_device *dev,
	      struct drm_crtc *crtc,
	      struct drm_plane *primary,
	      struct drm_plane *cursor,
	      const struct drm_crtc_funcs *funcs,
	      const char *name, ...);

1220__printf(6, 7)__attribute__((__format__(__kprintf__,6,7)))
1221int drmm_crtc_init_with_planes(struct drm_device *dev,
	       struct drm_crtc *crtc,
	       struct drm_plane *primary,
	       struct drm_plane *cursor,
	       const struct drm_crtc_funcs *funcs,
	       const char *name, ...);

1228void drm_crtc_cleanup(struct drm_crtc *crtc);

1230__printf(7, 8)__attribute__((__format__(__kprintf__,7,8)))
1231void *__drmm_crtc_alloc_with_planes(struct drm_device *dev,
		    size_t size, size_t offset,
		    struct drm_plane *primary,
		    struct drm_plane *cursor,
		    const struct drm_crtc_funcs *funcs,
		    const char *name, ...);

1238/**
* drmm_crtc_alloc_with_planes - Allocate and initialize a new CRTC object with
*    specified primary and cursor planes.
* @dev: DRM device
* @type: the type of the struct which contains struct &drm_crtc
* @member: the name of the &drm_crtc within @type.
* @primary: Primary plane for CRTC
* @cursor: Cursor plane for CRTC
* @funcs: callbacks for the new CRTC
* @name: printf style format string for the CRTC name, or NULL for default name
*
* Allocates and initializes a new crtc object. Cleanup is automatically
* handled through registering drmm_crtc_cleanup() with drmm_add_action().
*
* The @drm_crtc_funcs.destroy hook must be NULL.
*
* Returns:
* Pointer to new crtc, or ERR_PTR on failure.
*/
1257#define drmm_crtc_alloc_with_planes(dev, type, member, primary, cursor, funcs, name, ...)((type *)__drmm_crtc_alloc_with_planes(dev, sizeof(type), __builtin_offsetof
(type, member), primary, cursor, funcs, name, ...)) \
((type *)__drmm_crtc_alloc_with_planes(dev, sizeof(type), \
			       offsetof(type, member)__builtin_offsetof(type, member), \
			       primary, cursor, funcs, \
			       name, ##__VA_ARGS__))

1263/**
* drm_crtc_index - find the index of a registered CRTC
* @crtc: CRTC to find index for
*
* Given a registered CRTC, return the index of that CRTC within a DRM
* device's list of CRTCs.
*/
1270static inline unsigned int drm_crtc_index(const struct drm_crtc *crtc)
1271{
return crtc->index;
1273}

1275/**
* drm_crtc_mask - find the mask of a registered CRTC
* @crtc: CRTC to find mask for
*
* Given a registered CRTC, return the mask bit of that CRTC for the
* &drm_encoder.possible_crtcs and &drm_plane.possible_crtcs fields.
*/
1282static inline uint32_t drm_crtc_mask(const struct drm_crtc *crtc)
1283{
return 1 << drm_crtc_index(crtc);
1285}

1287int drm_mode_set_config_internal(struct drm_mode_set *set);
1288struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx);

1290/**
* drm_crtc_find - look up a CRTC object from its ID
* @dev: DRM device
* @file_priv: drm file to check for lease against.
* @id: &drm_mode_object ID
*
* This can be used to look up a CRTC from its userspace ID. Only used by
* drivers for legacy IOCTLs and interface, nowadays extensions to the KMS
* userspace interface should be done using &drm_property.
*/
1300static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,
struct drm_file *file_priv,
uint32_t id)
1303{
struct drm_mode_object *mo;
mo = drm_mode_object_find(dev, file_priv, id, DRM_MODE_OBJECT_CRTC0xcccccccc);
return mo ? obj_to_crtc(mo)({ const __typeof( ((struct drm_crtc *)0)->base ) *__mptr =
 (mo); (struct drm_crtc *)( (char *)__mptr - __builtin_offsetof
(struct drm_crtc, base) );}) : NULL((void *)0);
5
←
Assuming 'mo' is non-null, which participates in a condition later→
6
←
'?' condition is true→
7
←
Returning pointer, which participates in a condition later→
1307}

1309/**
* drm_for_each_crtc - iterate over all CRTCs
* @crtc: a &struct drm_crtc as the loop cursor
* @dev: the &struct drm_device
*
* Iterate over all CRTCs of @dev.
*/
1316#define drm_for_each_crtc(crtc, dev)for (crtc = ({ const __typeof( ((__typeof(*crtc) *)0)->head
 ) *__mptr = ((&(dev)->mode_config.crtc_list)->next
); (__typeof(*crtc) *)( (char *)__mptr - __builtin_offsetof(__typeof
(*crtc), head) );}); &crtc->head != (&(dev)->mode_config
.crtc_list); crtc = ({ const __typeof( ((__typeof(*crtc) *)0)
->head ) *__mptr = (crtc->head.next); (__typeof(*crtc) *
)( (char *)__mptr - __builtin_offsetof(__typeof(*crtc), head)
 );})) \
list_for_each_entry(crtc, &(dev)->mode_config.crtc_list, head)for (crtc = ({ const __typeof( ((__typeof(*crtc) *)0)->head
 ) *__mptr = ((&(dev)->mode_config.crtc_list)->next
); (__typeof(*crtc) *)( (char *)__mptr - __builtin_offsetof(__typeof
(*crtc), head) );}); &crtc->head != (&(dev)->mode_config
.crtc_list); crtc = ({ const __typeof( ((__typeof(*crtc) *)0)
->head ) *__mptr = (crtc->head.next); (__typeof(*crtc) *
)( (char *)__mptr - __builtin_offsetof(__typeof(*crtc), head)
 );}))

1319/**
* drm_for_each_crtc_reverse - iterate over all CRTCs in reverse order
* @crtc: a &struct drm_crtc as the loop cursor
* @dev: the &struct drm_device
*
* Iterate over all CRTCs of @dev.
*/
1326#define drm_for_each_crtc_reverse(crtc, dev)for (crtc = ({ const __typeof( ((__typeof(*crtc) *)0)->head
 ) *__mptr = ((&(dev)->mode_config.crtc_list)->prev
); (__typeof(*crtc) *)( (char *)__mptr - __builtin_offsetof(__typeof
(*crtc), head) );}); &crtc->head != (&(dev)->mode_config
.crtc_list); crtc = ({ const __typeof( ((__typeof(*crtc) *)0)
->head ) *__mptr = (crtc->head.prev); (__typeof(*crtc) *
)( (char *)__mptr - __builtin_offsetof(__typeof(*crtc), head)
 );})) \
list_for_each_entry_reverse(crtc, &(dev)->mode_config.crtc_list, head)for (crtc = ({ const __typeof( ((__typeof(*crtc) *)0)->head
 ) *__mptr = ((&(dev)->mode_config.crtc_list)->prev
); (__typeof(*crtc) *)( (char *)__mptr - __builtin_offsetof(__typeof
(*crtc), head) );}); &crtc->head != (&(dev)->mode_config
.crtc_list); crtc = ({ const __typeof( ((__typeof(*crtc) *)0)
->head ) *__mptr = (crtc->head.prev); (__typeof(*crtc) *
)( (char *)__mptr - __builtin_offsetof(__typeof(*crtc), head)
 );}))

1329int drm_crtc_create_scaling_filter_property(struct drm_crtc *crtc,
			    unsigned int supported_filters);

1332#endif /* __DRM_CRTC_H__ */

←

/usr/src/sys/dev/pci/drm/include/linux/slab.h

1/* Public domain. */
2 
3#ifndef _LINUX_SLAB_H
4#define _LINUX_SLAB_H
5 
6#include <sys/types.h>
7#include <sys/malloc.h>
8 
9#include <linux/types.h>
10#include <linux/workqueue.h>
11#include <linux/gfp.h>
12 
13#include <linux/processor.h>	/* for CACHELINESIZE */
14 
15#define ARCH_KMALLOC_MINALIGN64 CACHELINESIZE64
16 
17#define ZERO_SIZE_PTR((void *)0) NULL((void *)0)
18 
19static inline void *
20kmalloc(size_t size, int flags)
21{
22	return malloc(size, M_DRM145, flags);
23}
24 
25static inline void *
26kmalloc_array(size_t n, size_t size, int flags)
27{
28	if (n36.1
'n' is not equal to 0
36.1
'n' is not equal to 0
36.1
'n' is not equal to 0
 != 0 && SIZE_MAX0xffffffffffffffffUL / n < size)
37
←
Assuming the condition is false→
38
←
Taking false branch→
29		return NULL((void *)0);
30	return malloc(n * size, M_DRM145, flags);
39
←
Storing uninitialized value→
40
←
Returning pointer, which participates in a condition later→
31}
32 
33static inline void *
34kcalloc(size_t n, size_t size, int flags)
35{
36	if (n != 0 && SIZE_MAX0xffffffffffffffffUL / n < size)
37		return NULL((void *)0);
38	return malloc(n * size, M_DRM145, flags | M_ZERO0x0008);
39}
40 
41static inline void *
42kzalloc(size_t size, int flags)
43{
44	return malloc(size, M_DRM145, flags | M_ZERO0x0008);
45}
46 
47static inline void
48kfree(const void *objp)
49{
50	free((void *)objp, M_DRM145, 0);
51}
52 
53#endif