From 9999e48639b3cecb08ffb37358bcba3b48161b29 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 08:50:17 +0000
Subject: [PATCH] add ax88772_rst
---
kernel/drivers/gpu/drm/drm_framebuffer.c | 225 ++++++++++++++++++++++++++++++++++++++++++++++++-------
1 files changed, 194 insertions(+), 31 deletions(-)
diff --git a/kernel/drivers/gpu/drm/drm_framebuffer.c b/kernel/drivers/gpu/drm/drm_framebuffer.c
index 547c0f1..2f5b0c2 100644
--- a/kernel/drivers/gpu/drm/drm_framebuffer.c
+++ b/kernel/drivers/gpu/drm/drm_framebuffer.c
@@ -21,14 +21,22 @@
*/
#include <linux/export.h>
-#include <drm/drmP.h>
-#include <drm/drm_auth.h>
-#include <drm/drm_framebuffer.h>
-#include <drm/drm_atomic.h>
-#include <drm/drm_print.h>
+#include <linux/uaccess.h>
-#include "drm_internal.h"
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_uapi.h>
+#include <drm/drm_auth.h>
+#include <drm/drm_debugfs.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_file.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_framebuffer.h>
+#include <drm/drm_gem.h>
+#include <drm/drm_print.h>
+#include <drm/drm_util.h>
+
#include "drm_crtc_internal.h"
+#include "drm_internal.h"
/**
* DOC: overview
@@ -112,17 +120,21 @@
struct drm_mode_fb_cmd2 r = {};
int ret;
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EOPNOTSUPP;
+
+ r.pixel_format = drm_driver_legacy_fb_format(dev, or->bpp, or->depth);
+ if (r.pixel_format == DRM_FORMAT_INVALID) {
+ DRM_DEBUG("bad {bpp:%d, depth:%d}\n", or->bpp, or->depth);
+ return -EINVAL;
+ }
+
/* convert to new format and call new ioctl */
r.fb_id = or->fb_id;
r.width = or->width;
r.height = or->height;
r.pitches[0] = or->pitch;
- r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
r.handles[0] = or->handle;
-
- if (r.pixel_format == DRM_FORMAT_XRGB2101010 &&
- dev->driver->driver_features & DRIVER_PREFER_XBGR_30BPP)
- r.pixel_format = DRM_FORMAT_XBGR2101010;
ret = drm_mode_addfb2(dev, &r, file_priv);
if (ret)
@@ -164,8 +176,7 @@
int i;
/* check if the format is supported at all */
- info = __drm_format_info(r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN);
- if (!info) {
+ if (!__drm_format_info(r->pixel_format)) {
struct drm_format_name_buf format_name;
DRM_DEBUG_KMS("bad framebuffer format %s\n",
@@ -173,9 +184,6 @@
&format_name));
return -EINVAL;
}
-
- /* now let the driver pick its own format info */
- info = drm_get_format_info(dev, r);
if (r->width == 0) {
DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
@@ -187,23 +195,32 @@
return -EINVAL;
}
+ /* now let the driver pick its own format info */
+ info = drm_get_format_info(dev, r);
+
for (i = 0; i < info->num_planes; i++) {
unsigned int width = fb_plane_width(r->width, info, i);
unsigned int height = fb_plane_height(r->height, info, i);
- unsigned int bpp = info->bpp[i];
+ unsigned int block_size = info->char_per_block[i];
+ u64 min_pitch = drm_format_info_min_pitch(info, i, width);
+
+ if (!block_size && (r->modifier[i] == DRM_FORMAT_MOD_LINEAR)) {
+ DRM_DEBUG_KMS("Format requires non-linear modifier for plane %d\n", i);
+ return -EINVAL;
+ }
if (!r->handles[i]) {
DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
return -EINVAL;
}
- if ((uint64_t) width * bpp / 8 > UINT_MAX)
+ if (min_pitch > UINT_MAX)
return -ERANGE;
if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
return -ERANGE;
- if (r->pitches[i] < roundup(width * bpp, 8) / 8) {
+ if (block_size && r->pitches[i] < min_pitch) {
DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
return -EINVAL;
}
@@ -278,8 +295,7 @@
struct drm_framebuffer *fb;
int ret;
- if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS |
- DRM_MODE_FB_SECURE)) {
+ if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
return ERR_PTR(-EINVAL);
}
@@ -313,6 +329,7 @@
return fb;
}
+EXPORT_SYMBOL_FOR_TESTS_ONLY(drm_internal_framebuffer_create);
/**
* drm_mode_addfb2 - add an FB to the graphics configuration
@@ -336,7 +353,7 @@
struct drm_framebuffer *fb;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
+ return -EOPNOTSUPP;
fb = drm_internal_framebuffer_create(dev, r, file_priv);
if (IS_ERR(fb))
@@ -351,6 +368,30 @@
mutex_unlock(&file_priv->fbs_lock);
return 0;
+}
+
+int drm_mode_addfb2_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv)
+{
+#ifdef __BIG_ENDIAN
+ if (!dev->mode_config.quirk_addfb_prefer_host_byte_order) {
+ /*
+ * Drivers must set the
+ * quirk_addfb_prefer_host_byte_order quirk to make
+ * the drm_mode_addfb() compat code work correctly on
+ * bigendian machines.
+ *
+ * If they don't they interpret pixel_format values
+ * incorrectly for bug compatibility, which in turn
+ * implies the ADDFB2 ioctl does not work correctly
+ * then. So block it to make userspace fallback to
+ * ADDFB.
+ */
+ DRM_DEBUG_KMS("addfb2 broken on bigendian");
+ return -EOPNOTSUPP;
+ }
+#endif
+ return drm_mode_addfb2(dev, data, file_priv);
}
struct drm_mode_rmfb_work {
@@ -392,7 +433,7 @@
int found = 0;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
+ return -EOPNOTSUPP;
fb = drm_framebuffer_lookup(dev, file_priv, fb_id);
if (!fb)
@@ -469,7 +510,7 @@
int ret;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
+ return -EOPNOTSUPP;
fb = drm_framebuffer_lookup(dev, file_priv, r->fb_id);
if (!fb)
@@ -489,7 +530,7 @@
r->height = fb->height;
r->width = fb->width;
r->depth = fb->format->depth;
- r->bpp = fb->format->bpp[0];
+ r->bpp = fb->format->cpp[0] * 8;
r->pitch = fb->pitches[0];
/* GET_FB() is an unprivileged ioctl so we must not return a
@@ -507,7 +548,128 @@
out:
drm_framebuffer_put(fb);
+ return ret;
+}
+/**
+ * drm_mode_getfb2 - get extended FB info
+ * @dev: drm device for the ioctl
+ * @data: data pointer for the ioctl
+ * @file_priv: drm file for the ioctl call
+ *
+ * Lookup the FB given its ID and return info about it.
+ *
+ * Called by the user via ioctl.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_mode_getfb2_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv)
+{
+ struct drm_mode_fb_cmd2 *r = data;
+ struct drm_framebuffer *fb;
+ unsigned int i;
+ int ret;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ fb = drm_framebuffer_lookup(dev, file_priv, r->fb_id);
+ if (!fb)
+ return -ENOENT;
+
+ /* For multi-plane framebuffers, we require the driver to place the
+ * GEM objects directly in the drm_framebuffer. For single-plane
+ * framebuffers, we can fall back to create_handle.
+ */
+ if (!fb->obj[0] &&
+ (fb->format->num_planes > 1 || !fb->funcs->create_handle)) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ r->height = fb->height;
+ r->width = fb->width;
+ r->pixel_format = fb->format->format;
+
+ r->flags = 0;
+ if (dev->mode_config.allow_fb_modifiers)
+ r->flags |= DRM_MODE_FB_MODIFIERS;
+
+ for (i = 0; i < ARRAY_SIZE(r->handles); i++) {
+ r->handles[i] = 0;
+ r->pitches[i] = 0;
+ r->offsets[i] = 0;
+ r->modifier[i] = 0;
+ }
+
+ for (i = 0; i < fb->format->num_planes; i++) {
+ r->pitches[i] = fb->pitches[i];
+ r->offsets[i] = fb->offsets[i];
+ if (dev->mode_config.allow_fb_modifiers)
+ r->modifier[i] = fb->modifier;
+ }
+
+ /* GET_FB2() is an unprivileged ioctl so we must not return a
+ * buffer-handle to non master/root processes! To match GET_FB()
+ * just return invalid handles (0) for non masters/root
+ * rather than making GET_FB2() privileged.
+ */
+ if (!drm_is_current_master(file_priv) && !capable(CAP_SYS_ADMIN)) {
+ ret = 0;
+ goto out;
+ }
+
+ for (i = 0; i < fb->format->num_planes; i++) {
+ int j;
+
+ /* If we reuse the same object for multiple planes, also
+ * return the same handle.
+ */
+ for (j = 0; j < i; j++) {
+ if (fb->obj[i] == fb->obj[j]) {
+ r->handles[i] = r->handles[j];
+ break;
+ }
+ }
+
+ if (r->handles[i])
+ continue;
+
+ if (fb->obj[i]) {
+ ret = drm_gem_handle_create(file_priv, fb->obj[i],
+ &r->handles[i]);
+ } else {
+ WARN_ON(i > 0);
+ ret = fb->funcs->create_handle(fb, file_priv,
+ &r->handles[i]);
+ }
+
+ if (ret != 0)
+ goto out;
+ }
+
+out:
+ if (ret != 0) {
+ /* Delete any previously-created handles on failure. */
+ for (i = 0; i < ARRAY_SIZE(r->handles); i++) {
+ int j;
+
+ if (r->handles[i])
+ drm_gem_handle_delete(file_priv, r->handles[i]);
+
+ /* Zero out any handles identical to the one we just
+ * deleted.
+ */
+ for (j = i + 1; j < ARRAY_SIZE(r->handles); j++) {
+ if (r->handles[j] == r->handles[i])
+ r->handles[j] = 0;
+ }
+ }
+ }
+
+ drm_framebuffer_put(fb);
return ret;
}
@@ -542,7 +704,7 @@
int ret;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
+ return -EOPNOTSUPP;
fb = drm_framebuffer_lookup(dev, file_priv, r->fb_id);
if (!fb)
@@ -737,7 +899,7 @@
* @fb: fb to unregister
*
* Drivers need to call this when cleaning up driver-private framebuffers, e.g.
- * those used for fbdev. Note that the caller must hold a reference of it's own,
+ * those used for fbdev. Note that the caller must hold a reference of its own,
* i.e. the object may not be destroyed through this call (since it'll lead to a
* locking inversion).
*
@@ -947,6 +1109,7 @@
if (drm_framebuffer_read_refcount(fb) > 1) {
if (drm_drv_uses_atomic_modeset(dev)) {
int ret = atomic_remove_fb(fb);
+
WARN(ret, "atomic remove_fb failed with %i\n", ret);
} else
legacy_remove_fb(fb);
@@ -1044,10 +1207,10 @@
{ "framebuffer", drm_framebuffer_info, 0 },
};
-int drm_framebuffer_debugfs_init(struct drm_minor *minor)
+void drm_framebuffer_debugfs_init(struct drm_minor *minor)
{
- return drm_debugfs_create_files(drm_framebuffer_debugfs_list,
- ARRAY_SIZE(drm_framebuffer_debugfs_list),
- minor->debugfs_root, minor);
+ drm_debugfs_create_files(drm_framebuffer_debugfs_list,
+ ARRAY_SIZE(drm_framebuffer_debugfs_list),
+ minor->debugfs_root, minor);
}
#endif
--
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