Module Name: src
Committed By: riastradh
Date: Sun Dec 19 00:25:53 UTC 2021
Modified Files:
src/sys/external/bsd/drm2/drm: files.drmkms
Added Files:
src/sys/external/bsd/drm2/drm: drm_gem_framebuffer_helper.c
Log Message:
Local reimplementation of GPL drm_gem_framebuffer_helper.c.
To generate a diff of this commit:
cvs rdiff -u -r0 -r1.1 \
src/sys/external/bsd/drm2/drm/drm_gem_framebuffer_helper.c
cvs rdiff -u -r1.36 -r1.37 src/sys/external/bsd/drm2/drm/files.drmkms
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/external/bsd/drm2/drm/files.drmkms
diff -u src/sys/external/bsd/drm2/drm/files.drmkms:1.36 src/sys/external/bsd/drm2/drm/files.drmkms:1.37
--- src/sys/external/bsd/drm2/drm/files.drmkms:1.36 Sun Dec 19 00:25:34 2021
+++ src/sys/external/bsd/drm2/drm/files.drmkms Sun Dec 19 00:25:53 2021
@@ -1,4 +1,4 @@
-# $NetBSD: files.drmkms,v 1.36 2021/12/19 00:25:34 riastradh Exp $
+# $NetBSD: files.drmkms,v 1.37 2021/12/19 00:25:53 riastradh Exp $
include "external/bsd/drm2/linux/files.drmkms_linux"
@@ -96,7 +96,6 @@ file external/bsd/drm2/dist/drm/drm_form
file external/bsd/drm2/dist/drm/drm_fourcc.c drmkms
file external/bsd/drm2/dist/drm/drm_framebuffer.c drmkms
file external/bsd/drm2/dist/drm/drm_gem.c drmkms
-file external/bsd/drm2/dist/drm/drm_gem_framebuffer_helper.c drmkms
file external/bsd/drm2/dist/drm/drm_hashtab.c drmkms
file external/bsd/drm2/dist/drm/drm_hdcp.c drmkms
file external/bsd/drm2/dist/drm/drm_ioctl.c drmkms
@@ -129,6 +128,7 @@ file external/bsd/drm2/dist/drm/drm_vm.c
file external/bsd/drm2/dist/drm/drm_writeback.c drmkms
file external/bsd/drm2/drm/drm_cache.c drmkms
file external/bsd/drm2/drm/drm_fops.c drmkms
+file external/bsd/drm2/drm/drm_gem_framebuffer_helper.c drmkms
file external/bsd/drm2/drm/drm_lock.c drmkms
file external/bsd/drm2/drm/drm_memory.c drmkms
file external/bsd/drm2/drm/drm_scatter.c drmkms
Added files:
Index: src/sys/external/bsd/drm2/drm/drm_gem_framebuffer_helper.c
diff -u /dev/null src/sys/external/bsd/drm2/drm/drm_gem_framebuffer_helper.c:1.1
--- /dev/null Sun Dec 19 00:25:53 2021
+++ src/sys/external/bsd/drm2/drm/drm_gem_framebuffer_helper.c Sun Dec 19 00:25:53 2021
@@ -0,0 +1,157 @@
+/* $NetBSD: drm_gem_framebuffer_helper.c,v 1.1 2021/12/19 00:25:53 riastradh Exp $ */
+
+/*-
+ * Copyright (c) 2018 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Taylor R. Campbell.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: drm_gem_framebuffer_helper.c,v 1.1 2021/12/19 00:25:53 riastradh Exp $");
+
+#include <linux/err.h>
+#include <linux/slab.h>
+
+#include <drm/drm_framebuffer.h>
+#include <drm/drm_gem.h>
+
+#include <uapi/drm/drm_mode.h>
+
+/*
+ * drm_gem_fb_destroy(fb)
+ *
+ * Release the objects in, clean up and, kfree a framebuffer
+ * allocated with drm_gem_fb_create_with_funcs.
+ *
+ * Fit for use as struct drm_framebuffer_funcs::destroy. Caller
+ * must guarantee that the struct drm_framebuffer is allocated
+ * with kmalloc.
+ */
+void
+drm_gem_fb_destroy(struct drm_framebuffer *fb)
+{
+ unsigned plane;
+
+ for (plane = 0; plane < __arraycount(fb->obj); plane++)
+ drm_gem_object_put_unlocked(fb->obj[plane]);
+ drm_framebuffer_cleanup(fb);
+ kfree(fb);
+}
+
+/*
+ * drm_gem_fb_create_handle(fb, file, handlep)
+ *
+ * Create a GEM handle for the object of the first plane (plane=0)
+ * of fb in the specified drm file namespace, and store it in
+ * *handlep.
+ *
+ * Returns 0 on success, negative error on failure.
+ */
+int
+drm_gem_fb_create_handle(struct drm_framebuffer *fb, struct drm_file *file,
+ unsigned *handlep)
+{
+
+ return drm_gem_handle_create(file, fb->obj[0], handlep);
+}
+
+/*
+ * drm_gem_fb_create_with_funcs(dev, file, mode_cmd, funcs)
+ *
+ * Create a framebuffer in the specified drm device from the given
+ * mode command, resolving mode_cmd's handles in the specified drm
+ * file.
+ *
+ * Returns pointer on success, ERR_PTR on failure.
+ *
+ * ENOENT missing handle
+ * EINVAL wrong size object, invalid mode format
+ */
+struct drm_framebuffer *
+drm_gem_fb_create_with_funcs(struct drm_device *dev, struct drm_file *file,
+ const struct drm_mode_fb_cmd2 *mode_cmd,
+ const struct drm_framebuffer_funcs *funcs)
+{
+ struct drm_framebuffer *fb;
+ unsigned plane;
+ int ret;
+
+ /* Allocate a framebuffer object with kmalloc. */
+ fb = kmalloc(sizeof(*fb), GFP_KERNEL);
+ if (fb == NULL) {
+ ret = -ENOMEM;
+ goto fail0;
+ }
+
+ /*
+ * Fill framebuffer parameters from mode_cmd. If they're not
+ * valid, fail with EINVAL.
+ */
+ drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
+ if (fb->format == NULL) {
+ ret = -EINVAL;
+ goto fail1;
+ }
+
+ /* Get the object for each plane. */
+ for (plane = 0; plane < fb->format->num_planes; plane++) {
+ unsigned vsub = (plane > 0 ? info->vsub : 1); /* XXX ? */
+ unsigned hsub = (plane > 0 ? info->hsub : 1); /* XXX ? */
+ unsigned handle = mode_cmd->handles[plane];
+ unsigned size;
+
+ /* Look up the object for this plane. */
+ fb->obj[plane] = drm_gem_object_lookup(file, handle);
+ if (fb->obj[plane] == NULL) {
+ ret = -ENOENT;
+ goto fail2;
+ }
+
+ /* Confirm the object is large enough to handle it. */
+ size = (mode_cmd->height/vsub - 1)*mode_cmd->pitches[plane]
+ + (mode_cmd->width/hsub)*fb->format->cpp[plane]
+ + mode_cmd->offsets[plane];
+ if (fb->obj[plane]->size < size) {
+ ret = -EINVAL;
+ plane++; /* free this one too */
+ goto fail2;
+ }
+ }
+
+ /* Initialize the framebuffer. */
+ ret = drm_framebuffer_init(dev, fb, funcs);
+ if (ret)
+ goto fail2;
+
+ /* Success! */
+ return fb;
+
+fail2: while (plane --> 0)
+ drm_gem_object_put_unlocked(fb->obj[plane]);
+fail1: kmem_free(fb, sizeof(*fb));
+fail0: KASSERT(ret);
+ return ERR_PTR(ret);
+}
