^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Copyright (c) 2016 Intel Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Permission to use, copy, modify, distribute, and sell this software and its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * documentation for any purpose is hereby granted without fee, provided that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * the above copyright notice appear in all copies and that both that copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * notice and this permission notice appear in supporting documentation, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * that the name of the copyright holders not be used in advertising or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * publicity pertaining to distribution of the software without specific,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * written prior permission. The copyright holders make no representations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * about the suitability of this software for any purpose. It is provided "as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * is" without express or implied warranty.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * OF THIS SOFTWARE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <drm/drm_atomic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <drm/drm_atomic_uapi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <drm/drm_auth.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <drm/drm_debugfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <drm/drm_drv.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <drm/drm_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <drm/drm_fourcc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <drm/drm_framebuffer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <drm/drm_gem.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <drm/drm_print.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <drm/drm_util.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include "drm_crtc_internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include "drm_internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * DOC: overview
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * Frame buffers are abstract memory objects that provide a source of pixels to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * scanout to a CRTC. Applications explicitly request the creation of frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * buffers through the DRM_IOCTL_MODE_ADDFB(2) ioctls and receive an opaque
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * handle that can be passed to the KMS CRTC control, plane configuration and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * page flip functions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * Frame buffers rely on the underlying memory manager for allocating backing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * storage. When creating a frame buffer applications pass a memory handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * (or a list of memory handles for multi-planar formats) through the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * &struct drm_mode_fb_cmd2 argument. For drivers using GEM as their userspace
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * buffer management interface this would be a GEM handle. Drivers are however
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * free to use their own backing storage object handles, e.g. vmwgfx directly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * exposes special TTM handles to userspace and so expects TTM handles in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * create ioctl and not GEM handles.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * Framebuffers are tracked with &struct drm_framebuffer. They are published
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * using drm_framebuffer_init() - after calling that function userspace can use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * and access the framebuffer object. The helper function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * drm_helper_mode_fill_fb_struct() can be used to pre-fill the required
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * metadata fields.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * The lifetime of a drm framebuffer is controlled with a reference count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * drivers can grab additional references with drm_framebuffer_get() and drop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * them again with drm_framebuffer_put(). For driver-private framebuffers for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * which the last reference is never dropped (e.g. for the fbdev framebuffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * when the struct &struct drm_framebuffer is embedded into the fbdev helper
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * struct) drivers can manually clean up a framebuffer at module unload time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * with drm_framebuffer_unregister_private(). But doing this is not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * recommended, and it's better to have a normal free-standing &struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * drm_framebuffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) int drm_framebuffer_check_src_coords(uint32_t src_x, uint32_t src_y,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) uint32_t src_w, uint32_t src_h,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) const struct drm_framebuffer *fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) unsigned int fb_width, fb_height;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) fb_width = fb->width << 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) fb_height = fb->height << 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /* Make sure source coordinates are inside the fb. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) if (src_w > fb_width ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) src_x > fb_width - src_w ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) src_h > fb_height ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) src_y > fb_height - src_h) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) DRM_DEBUG_KMS("Invalid source coordinates "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) src_y >> 16, ((src_y & 0xffff) * 15625) >> 10,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) fb->width, fb->height);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * drm_mode_addfb - add an FB to the graphics configuration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * @dev: drm device for the ioctl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * @or: pointer to request structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * @file_priv: drm file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * Add a new FB to the specified CRTC, given a user request. This is the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * original addfb ioctl which only supported RGB formats.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) * Called by the user via ioctl, or by an in-kernel client.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * Zero on success, negative errno on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) int drm_mode_addfb(struct drm_device *dev, struct drm_mode_fb_cmd *or,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct drm_file *file_priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) struct drm_mode_fb_cmd2 r = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (!drm_core_check_feature(dev, DRIVER_MODESET))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) r.pixel_format = drm_driver_legacy_fb_format(dev, or->bpp, or->depth);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (r.pixel_format == DRM_FORMAT_INVALID) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) DRM_DEBUG("bad {bpp:%d, depth:%d}\n", or->bpp, or->depth);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) /* convert to new format and call new ioctl */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) r.fb_id = or->fb_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) r.width = or->width;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) r.height = or->height;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) r.pitches[0] = or->pitch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) r.handles[0] = or->handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) ret = drm_mode_addfb2(dev, &r, file_priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) or->fb_id = r.fb_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) int drm_mode_addfb_ioctl(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) void *data, struct drm_file *file_priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) return drm_mode_addfb(dev, data, file_priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) static int fb_plane_width(int width,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) const struct drm_format_info *format, int plane)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) if (plane == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) return width;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) return DIV_ROUND_UP(width, format->hsub);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static int fb_plane_height(int height,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) const struct drm_format_info *format, int plane)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) if (plane == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) return height;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) return DIV_ROUND_UP(height, format->vsub);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) static int framebuffer_check(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) const struct drm_mode_fb_cmd2 *r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) const struct drm_format_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) /* check if the format is supported at all */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) if (!__drm_format_info(r->pixel_format)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) struct drm_format_name_buf format_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) DRM_DEBUG_KMS("bad framebuffer format %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) drm_get_format_name(r->pixel_format,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) &format_name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if (r->width == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (r->height == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) /* now let the driver pick its own format info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) info = drm_get_format_info(dev, r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) for (i = 0; i < info->num_planes; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) unsigned int width = fb_plane_width(r->width, info, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) unsigned int height = fb_plane_height(r->height, info, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) unsigned int block_size = info->char_per_block[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) u64 min_pitch = drm_format_info_min_pitch(info, i, width);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (!block_size && (r->modifier[i] == DRM_FORMAT_MOD_LINEAR)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) DRM_DEBUG_KMS("Format requires non-linear modifier for plane %d\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (!r->handles[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (min_pitch > UINT_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) return -ERANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) return -ERANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (block_size && r->pitches[i] < min_pitch) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) r->modifier[i], i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) if (r->flags & DRM_MODE_FB_MODIFIERS &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) r->modifier[i] != r->modifier[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) r->modifier[i], i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) /* modifier specific checks: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) switch (r->modifier[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) /* NOTE: the pitch restriction may be lifted later if it turns
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) * out that no hw has this restriction:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) if (r->pixel_format != DRM_FORMAT_NV12 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) width % 128 || height % 32 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) r->pitches[i] % 128) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) for (i = info->num_planes; i < 4; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) if (r->modifier[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) if (!(r->flags & DRM_MODE_FB_MODIFIERS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (r->handles[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) if (r->pitches[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) if (r->offsets[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) struct drm_framebuffer *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) drm_internal_framebuffer_create(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) const struct drm_mode_fb_cmd2 *r,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) struct drm_file *file_priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) struct drm_mode_config *config = &dev->mode_config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) struct drm_framebuffer *fb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) if ((config->min_width > r->width) || (r->width > config->max_width)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) r->width, config->min_width, config->max_width);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if ((config->min_height > r->height) || (r->height > config->max_height)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) r->height, config->min_height, config->max_height);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) if (r->flags & DRM_MODE_FB_MODIFIERS &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) !dev->mode_config.allow_fb_modifiers) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) DRM_DEBUG_KMS("driver does not support fb modifiers\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) ret = framebuffer_check(dev, r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) return ERR_PTR(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) if (IS_ERR(fb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) DRM_DEBUG_KMS("could not create framebuffer\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) return fb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) return fb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) EXPORT_SYMBOL_FOR_TESTS_ONLY(drm_internal_framebuffer_create);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) * drm_mode_addfb2 - add an FB to the graphics configuration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) * @dev: drm device for the ioctl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) * @data: data pointer for the ioctl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) * @file_priv: drm file for the ioctl call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) * Add a new FB to the specified CRTC, given a user request with format. This is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) * and uses fourcc codes as pixel format specifiers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) * Called by the user via ioctl.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) * Zero on success, negative errno on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) int drm_mode_addfb2(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) void *data, struct drm_file *file_priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) struct drm_mode_fb_cmd2 *r = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) struct drm_framebuffer *fb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (!drm_core_check_feature(dev, DRIVER_MODESET))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) fb = drm_internal_framebuffer_create(dev, r, file_priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) if (IS_ERR(fb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) return PTR_ERR(fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) r->fb_id = fb->base.id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) /* Transfer ownership to the filp for reaping on close */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) mutex_lock(&file_priv->fbs_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) list_add(&fb->filp_head, &file_priv->fbs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) mutex_unlock(&file_priv->fbs_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) int drm_mode_addfb2_ioctl(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) void *data, struct drm_file *file_priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) #ifdef __BIG_ENDIAN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) if (!dev->mode_config.quirk_addfb_prefer_host_byte_order) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) * Drivers must set the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) * quirk_addfb_prefer_host_byte_order quirk to make
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) * the drm_mode_addfb() compat code work correctly on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) * bigendian machines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) * If they don't they interpret pixel_format values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) * incorrectly for bug compatibility, which in turn
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) * implies the ADDFB2 ioctl does not work correctly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) * then. So block it to make userspace fallback to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) * ADDFB.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) DRM_DEBUG_KMS("addfb2 broken on bigendian");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) return drm_mode_addfb2(dev, data, file_priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) struct drm_mode_rmfb_work {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) struct work_struct work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) struct list_head fbs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) static void drm_mode_rmfb_work_fn(struct work_struct *w)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) struct drm_mode_rmfb_work *arg = container_of(w, typeof(*arg), work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) while (!list_empty(&arg->fbs)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) struct drm_framebuffer *fb =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) list_first_entry(&arg->fbs, typeof(*fb), filp_head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) list_del_init(&fb->filp_head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) drm_framebuffer_remove(fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) * drm_mode_rmfb - remove an FB from the configuration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) * @dev: drm device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) * @fb_id: id of framebuffer to remove
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) * @file_priv: drm file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) * Remove the specified FB.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) * Called by the user via ioctl, or by an in-kernel client.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) * Zero on success, negative errno on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) int drm_mode_rmfb(struct drm_device *dev, u32 fb_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) struct drm_file *file_priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) struct drm_framebuffer *fb = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) struct drm_framebuffer *fbl = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) int found = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) if (!drm_core_check_feature(dev, DRIVER_MODESET))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) fb = drm_framebuffer_lookup(dev, file_priv, fb_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) if (!fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) mutex_lock(&file_priv->fbs_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) list_for_each_entry(fbl, &file_priv->fbs, filp_head)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) if (fb == fbl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) found = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) if (!found) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) mutex_unlock(&file_priv->fbs_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) goto fail_unref;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) list_del_init(&fb->filp_head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) mutex_unlock(&file_priv->fbs_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) /* drop the reference we picked up in framebuffer lookup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) drm_framebuffer_put(fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) * we now own the reference that was stored in the fbs list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) * drm_framebuffer_remove may fail with -EINTR on pending signals,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) * so run this in a separate stack as there's no way to correctly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) * handle this after the fb is already removed from the lookup table.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) if (drm_framebuffer_read_refcount(fb) > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) struct drm_mode_rmfb_work arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) INIT_LIST_HEAD(&arg.fbs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) list_add_tail(&fb->filp_head, &arg.fbs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) schedule_work(&arg.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) flush_work(&arg.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) destroy_work_on_stack(&arg.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) drm_framebuffer_put(fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) fail_unref:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) drm_framebuffer_put(fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) int drm_mode_rmfb_ioctl(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) void *data, struct drm_file *file_priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) uint32_t *fb_id = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) return drm_mode_rmfb(dev, *fb_id, file_priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) * drm_mode_getfb - get FB info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) * @dev: drm device for the ioctl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) * @data: data pointer for the ioctl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) * @file_priv: drm file for the ioctl call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) * Lookup the FB given its ID and return info about it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) * Called by the user via ioctl.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) * Zero on success, negative errno on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) int drm_mode_getfb(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) void *data, struct drm_file *file_priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) struct drm_mode_fb_cmd *r = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) struct drm_framebuffer *fb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) if (!drm_core_check_feature(dev, DRIVER_MODESET))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) fb = drm_framebuffer_lookup(dev, file_priv, r->fb_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) if (!fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) /* Multi-planar framebuffers need getfb2. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) if (fb->format->num_planes > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) if (!fb->funcs->create_handle) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) r->height = fb->height;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) r->width = fb->width;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) r->depth = fb->format->depth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) r->bpp = fb->format->cpp[0] * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) r->pitch = fb->pitches[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) /* GET_FB() is an unprivileged ioctl so we must not return a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) * buffer-handle to non-master processes! For
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) * backwards-compatibility reasons, we cannot make GET_FB() privileged,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) * so just return an invalid handle for non-masters.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) if (!drm_is_current_master(file_priv) && !capable(CAP_SYS_ADMIN)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) r->handle = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) ret = fb->funcs->create_handle(fb, file_priv, &r->handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) drm_framebuffer_put(fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) * drm_mode_getfb2 - get extended FB info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) * @dev: drm device for the ioctl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) * @data: data pointer for the ioctl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) * @file_priv: drm file for the ioctl call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) * Lookup the FB given its ID and return info about it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) * Called by the user via ioctl.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) * Zero on success, negative errno on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) int drm_mode_getfb2_ioctl(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) void *data, struct drm_file *file_priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) struct drm_mode_fb_cmd2 *r = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) struct drm_framebuffer *fb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) if (!drm_core_check_feature(dev, DRIVER_MODESET))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) fb = drm_framebuffer_lookup(dev, file_priv, r->fb_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) if (!fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) /* For multi-plane framebuffers, we require the driver to place the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) * GEM objects directly in the drm_framebuffer. For single-plane
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) * framebuffers, we can fall back to create_handle.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) if (!fb->obj[0] &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) (fb->format->num_planes > 1 || !fb->funcs->create_handle)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) r->height = fb->height;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) r->width = fb->width;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) r->pixel_format = fb->format->format;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) r->flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) if (dev->mode_config.allow_fb_modifiers)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) r->flags |= DRM_MODE_FB_MODIFIERS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) for (i = 0; i < ARRAY_SIZE(r->handles); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) r->handles[i] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) r->pitches[i] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) r->offsets[i] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) r->modifier[i] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) for (i = 0; i < fb->format->num_planes; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) r->pitches[i] = fb->pitches[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) r->offsets[i] = fb->offsets[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) if (dev->mode_config.allow_fb_modifiers)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) r->modifier[i] = fb->modifier;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) /* GET_FB2() is an unprivileged ioctl so we must not return a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) * buffer-handle to non master/root processes! To match GET_FB()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) * just return invalid handles (0) for non masters/root
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) * rather than making GET_FB2() privileged.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) if (!drm_is_current_master(file_priv) && !capable(CAP_SYS_ADMIN)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) for (i = 0; i < fb->format->num_planes; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) int j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) /* If we reuse the same object for multiple planes, also
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) * return the same handle.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) for (j = 0; j < i; j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) if (fb->obj[i] == fb->obj[j]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) r->handles[i] = r->handles[j];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) if (r->handles[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) if (fb->obj[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) ret = drm_gem_handle_create(file_priv, fb->obj[i],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) &r->handles[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) WARN_ON(i > 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) ret = fb->funcs->create_handle(fb, file_priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) &r->handles[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) if (ret != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) /* Delete any previously-created handles on failure. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) for (i = 0; i < ARRAY_SIZE(r->handles); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) int j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) if (r->handles[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) drm_gem_handle_delete(file_priv, r->handles[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) /* Zero out any handles identical to the one we just
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) * deleted.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) for (j = i + 1; j < ARRAY_SIZE(r->handles); j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) if (r->handles[j] == r->handles[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) r->handles[j] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) drm_framebuffer_put(fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) * @dev: drm device for the ioctl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) * @data: data pointer for the ioctl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) * @file_priv: drm file for the ioctl call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) * Lookup the FB and flush out the damaged area supplied by userspace as a clip
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) * rectangle list. Generic userspace which does frontbuffer rendering must call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) * this ioctl to flush out the changes on manual-update display outputs, e.g.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) * usb display-link, mipi manual update panels or edp panel self refresh modes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) * Modesetting drivers which always update the frontbuffer do not need to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) * implement the corresponding &drm_framebuffer_funcs.dirty callback.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) * Called by the user via ioctl.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) * Zero on success, negative errno on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) void *data, struct drm_file *file_priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) struct drm_clip_rect __user *clips_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) struct drm_clip_rect *clips = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) struct drm_mode_fb_dirty_cmd *r = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) struct drm_framebuffer *fb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) unsigned flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) int num_clips;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) if (!drm_core_check_feature(dev, DRIVER_MODESET))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) fb = drm_framebuffer_lookup(dev, file_priv, r->fb_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) if (!fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) num_clips = r->num_clips;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) if (!num_clips != !clips_ptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) goto out_err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) /* If userspace annotates copy, clips must come in pairs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) goto out_err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) if (num_clips && clips_ptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) goto out_err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) if (!clips) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) goto out_err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) ret = copy_from_user(clips, clips_ptr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) num_clips * sizeof(*clips));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) ret = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) goto out_err2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) if (fb->funcs->dirty) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) clips, num_clips);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) ret = -ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) out_err2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) kfree(clips);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) out_err1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) drm_framebuffer_put(fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) * drm_fb_release - remove and free the FBs on this file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) * @priv: drm file for the ioctl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) * Destroy all the FBs associated with @filp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) * Called by the user via ioctl.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) * Zero on success, negative errno on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) void drm_fb_release(struct drm_file *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) struct drm_framebuffer *fb, *tfb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) struct drm_mode_rmfb_work arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) INIT_LIST_HEAD(&arg.fbs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) * When the file gets released that means no one else can access the fb
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) * list any more, so no need to grab fpriv->fbs_lock. And we need to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) * avoid upsetting lockdep since the universal cursor code adds a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) * framebuffer while holding mutex locks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) * Note that a real deadlock between fpriv->fbs_lock and the modeset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) * locks is impossible here since no one else but this function can get
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) * at it any more.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) if (drm_framebuffer_read_refcount(fb) > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) list_move_tail(&fb->filp_head, &arg.fbs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) list_del_init(&fb->filp_head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) /* This drops the fpriv->fbs reference. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) drm_framebuffer_put(fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) if (!list_empty(&arg.fbs)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) schedule_work(&arg.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) flush_work(&arg.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) destroy_work_on_stack(&arg.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) void drm_framebuffer_free(struct kref *kref)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) struct drm_framebuffer *fb =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) container_of(kref, struct drm_framebuffer, base.refcount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) struct drm_device *dev = fb->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) * The lookup idr holds a weak reference, which has not necessarily been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) * removed at this point. Check for that.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) drm_mode_object_unregister(dev, &fb->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) fb->funcs->destroy(fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) * drm_framebuffer_init - initialize a framebuffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) * @dev: DRM device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) * @fb: framebuffer to be initialized
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) * @funcs: ... with these functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) * Allocates an ID for the framebuffer's parent mode object, sets its mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) * functions & device file and adds it to the master fd list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) * IMPORTANT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) * This functions publishes the fb and makes it available for concurrent access
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) * by other users. Which means by this point the fb _must_ be fully set up -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) * since all the fb attributes are invariant over its lifetime, no further
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) * locking but only correct reference counting is required.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) * Zero on success, error code on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) const struct drm_framebuffer_funcs *funcs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) if (WARN_ON_ONCE(fb->dev != dev || !fb->format))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) INIT_LIST_HEAD(&fb->filp_head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) fb->funcs = funcs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) strcpy(fb->comm, current->comm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) ret = __drm_mode_object_add(dev, &fb->base, DRM_MODE_OBJECT_FB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) false, drm_framebuffer_free);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) mutex_lock(&dev->mode_config.fb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) dev->mode_config.num_fb++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) list_add(&fb->head, &dev->mode_config.fb_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) mutex_unlock(&dev->mode_config.fb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) drm_mode_object_register(dev, &fb->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) EXPORT_SYMBOL(drm_framebuffer_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) * @dev: drm device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) * @file_priv: drm file to check for lease against.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) * @id: id of the fb object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) * If successful, this grabs an additional reference to the framebuffer -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) * callers need to make sure to eventually unreference the returned framebuffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) * again, using drm_framebuffer_put().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) struct drm_file *file_priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) uint32_t id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) struct drm_mode_object *obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) struct drm_framebuffer *fb = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) obj = __drm_mode_object_find(dev, file_priv, id, DRM_MODE_OBJECT_FB);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) if (obj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) fb = obj_to_fb(obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) return fb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) EXPORT_SYMBOL(drm_framebuffer_lookup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) * @fb: fb to unregister
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) * those used for fbdev. Note that the caller must hold a reference of its own,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) * i.e. the object may not be destroyed through this call (since it'll lead to a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) * locking inversion).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) * NOTE: This function is deprecated. For driver-private framebuffers it is not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) * recommended to embed a framebuffer struct info fbdev struct, instead, a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) * framebuffer pointer is preferred and drm_framebuffer_put() should be called
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) * when the framebuffer is to be cleaned up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) struct drm_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) if (!fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) dev = fb->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) /* Mark fb as reaped and drop idr ref. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) drm_mode_object_unregister(dev, &fb->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) EXPORT_SYMBOL(drm_framebuffer_unregister_private);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) * drm_framebuffer_cleanup - remove a framebuffer object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) * @fb: framebuffer to remove
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) * Cleanup framebuffer. This function is intended to be used from the drivers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) * &drm_framebuffer_funcs.destroy callback. It can also be used to clean up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) * driver private framebuffers embedded into a larger structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) * Note that this function does not remove the fb from active usage - if it is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) * still used anywhere, hilarity can ensue since userspace could call getfb on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) * the id and get back -EINVAL. Obviously no concern at driver unload time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) * Also, the framebuffer will not be removed from the lookup idr - for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) * user-created framebuffers this will happen in in the rmfb ioctl. For
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) * driver-private objects (e.g. for fbdev) drivers need to explicitly call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) * drm_framebuffer_unregister_private.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) struct drm_device *dev = fb->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) mutex_lock(&dev->mode_config.fb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) list_del(&fb->head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) dev->mode_config.num_fb--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) mutex_unlock(&dev->mode_config.fb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) EXPORT_SYMBOL(drm_framebuffer_cleanup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) static int atomic_remove_fb(struct drm_framebuffer *fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) struct drm_modeset_acquire_ctx ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) struct drm_device *dev = fb->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) struct drm_atomic_state *state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) struct drm_plane *plane;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) struct drm_connector *conn __maybe_unused;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) struct drm_connector_state *conn_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) int i, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) unsigned plane_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) bool disable_crtcs = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) retry_disable:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) drm_modeset_acquire_init(&ctx, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) state = drm_atomic_state_alloc(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) if (!state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) state->acquire_ctx = &ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) retry:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) plane_mask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) ret = drm_modeset_lock_all_ctx(dev, &ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) drm_for_each_plane(plane, dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) struct drm_plane_state *plane_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) if (plane->state->fb != fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) plane_state = drm_atomic_get_plane_state(state, plane);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) if (IS_ERR(plane_state)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) ret = PTR_ERR(plane_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) if (disable_crtcs && plane_state->crtc->primary == plane) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) struct drm_crtc_state *crtc_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) crtc_state = drm_atomic_get_existing_crtc_state(state, plane_state->crtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) ret = drm_atomic_add_affected_connectors(state, plane_state->crtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) crtc_state->active = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) drm_atomic_set_fb_for_plane(plane_state, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) ret = drm_atomic_set_crtc_for_plane(plane_state, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) plane_mask |= drm_plane_mask(plane);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) /* This list is only filled when disable_crtcs is set. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) for_each_new_connector_in_state(state, conn, conn_state, i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) ret = drm_atomic_set_crtc_for_connector(conn_state, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) if (plane_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) ret = drm_atomic_commit(state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) if (ret == -EDEADLK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) drm_atomic_state_clear(state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) drm_modeset_backoff(&ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) goto retry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) drm_atomic_state_put(state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) drm_modeset_drop_locks(&ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) drm_modeset_acquire_fini(&ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) if (ret == -EINVAL && !disable_crtcs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) disable_crtcs = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) goto retry_disable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) static void legacy_remove_fb(struct drm_framebuffer *fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) struct drm_device *dev = fb->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) struct drm_crtc *crtc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) struct drm_plane *plane;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) drm_modeset_lock_all(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) /* remove from any CRTC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) drm_for_each_crtc(crtc, dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) if (crtc->primary->fb == fb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) /* should turn off the crtc */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) if (drm_crtc_force_disable(crtc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) drm_for_each_plane(plane, dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) if (plane->fb == fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) drm_plane_force_disable(plane);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) drm_modeset_unlock_all(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) * drm_framebuffer_remove - remove and unreference a framebuffer object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) * @fb: framebuffer to remove
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) * Scans all the CRTCs and planes in @dev's mode_config. If they're
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) * using @fb, removes it, setting it to NULL. Then drops the reference to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) * passed-in framebuffer. Might take the modeset locks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) * Note that this function optimizes the cleanup away if the caller holds the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) * last reference to the framebuffer. It is also guaranteed to not take the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) * modeset locks in this case.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) void drm_framebuffer_remove(struct drm_framebuffer *fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) struct drm_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) if (!fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) dev = fb->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) WARN_ON(!list_empty(&fb->filp_head));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) * drm ABI mandates that we remove any deleted framebuffers from active
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) * useage. But since most sane clients only remove framebuffers they no
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) * longer need, try to optimize this away.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) * Since we're holding a reference ourselves, observing a refcount of 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) * means that we're the last holder and can skip it. Also, the refcount
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) * can never increase from 1 again, so we don't need any barriers or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) * locks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) * Note that userspace could try to race with use and instate a new
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) * usage _after_ we've cleared all current ones. End result will be an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) * in this manner.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) if (drm_framebuffer_read_refcount(fb) > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) if (drm_drv_uses_atomic_modeset(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) int ret = atomic_remove_fb(fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) WARN(ret, "atomic remove_fb failed with %i\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) legacy_remove_fb(fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) drm_framebuffer_put(fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) EXPORT_SYMBOL(drm_framebuffer_remove);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) * drm_framebuffer_plane_width - width of the plane given the first plane
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) * @width: width of the first plane
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) * @fb: the framebuffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) * @plane: plane index
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) * The width of @plane, given that the width of the first plane is @width.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) int drm_framebuffer_plane_width(int width,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) const struct drm_framebuffer *fb, int plane)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) if (plane >= fb->format->num_planes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) return fb_plane_width(width, fb->format, plane);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) EXPORT_SYMBOL(drm_framebuffer_plane_width);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) * drm_framebuffer_plane_height - height of the plane given the first plane
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) * @height: height of the first plane
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) * @fb: the framebuffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) * @plane: plane index
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) * The height of @plane, given that the height of the first plane is @height.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) int drm_framebuffer_plane_height(int height,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) const struct drm_framebuffer *fb, int plane)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) if (plane >= fb->format->num_planes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) return fb_plane_height(height, fb->format, plane);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) EXPORT_SYMBOL(drm_framebuffer_plane_height);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) void drm_framebuffer_print_info(struct drm_printer *p, unsigned int indent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) const struct drm_framebuffer *fb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) struct drm_format_name_buf format_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) drm_printf_indent(p, indent, "allocated by = %s\n", fb->comm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) drm_printf_indent(p, indent, "refcount=%u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) drm_framebuffer_read_refcount(fb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) drm_printf_indent(p, indent, "format=%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) drm_get_format_name(fb->format->format, &format_name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) drm_printf_indent(p, indent, "modifier=0x%llx\n", fb->modifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) drm_printf_indent(p, indent, "size=%ux%u\n", fb->width, fb->height);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) drm_printf_indent(p, indent, "layers:\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) for (i = 0; i < fb->format->num_planes; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) drm_printf_indent(p, indent + 1, "size[%u]=%dx%d\n", i,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) drm_framebuffer_plane_width(fb->width, fb, i),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) drm_framebuffer_plane_height(fb->height, fb, i));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) drm_printf_indent(p, indent + 1, "pitch[%u]=%u\n", i, fb->pitches[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) drm_printf_indent(p, indent + 1, "offset[%u]=%u\n", i, fb->offsets[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) drm_printf_indent(p, indent + 1, "obj[%u]:%s\n", i,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) fb->obj[i] ? "" : "(null)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) if (fb->obj[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) drm_gem_print_info(p, indent + 2, fb->obj[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) #ifdef CONFIG_DEBUG_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) static int drm_framebuffer_info(struct seq_file *m, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) struct drm_info_node *node = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) struct drm_device *dev = node->minor->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) struct drm_printer p = drm_seq_file_printer(m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) struct drm_framebuffer *fb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) mutex_lock(&dev->mode_config.fb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) drm_for_each_fb(fb, dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) drm_printf(&p, "framebuffer[%u]:\n", fb->base.id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) drm_framebuffer_print_info(&p, 1, fb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) mutex_unlock(&dev->mode_config.fb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) static const struct drm_info_list drm_framebuffer_debugfs_list[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) { "framebuffer", drm_framebuffer_info, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) void drm_framebuffer_debugfs_init(struct drm_minor *minor)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) drm_debugfs_create_files(drm_framebuffer_debugfs_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) ARRAY_SIZE(drm_framebuffer_debugfs_list),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) minor->debugfs_root, minor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags
| Donate