git: d5035d913cc6 - main - Add a simple-framebuffer vt driver
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Date: Wed, 26 Apr 2023 05:45:29 UTC
The branch main has been updated by kevans:
URL: https://cgit.FreeBSD.org/src/commit/?id=d5035d913cc6453320df53840fea2145fe1d0128
commit d5035d913cc6453320df53840fea2145fe1d0128
Author: Andrew Turner <andrew@FreeBSD.org>
AuthorDate: 2023-04-26 05:44:10 +0000
Commit: Kyle Evans <kevans@FreeBSD.org>
CommitDate: 2023-04-26 05:44:48 +0000
Add a simple-framebuffer vt driver
This allows us to support this hardware and, in the future, use clocks
so they are enabled past the initial kernel boot process.
Reviewed by: ray
Differential Revision: https://reviews.freebsd.org/D30103
---
sys/arm64/conf/std.dev | 1 +
sys/conf/files | 1 +
sys/dev/vt/hw/simplefb/simplefb.c | 226 ++++++++++++++++++++++++++++++++++++++
3 files changed, 228 insertions(+)
diff --git a/sys/arm64/conf/std.dev b/sys/arm64/conf/std.dev
index 0a0e1da8cf8b..74d2407e0aec 100644
--- a/sys/arm64/conf/std.dev
+++ b/sys/arm64/conf/std.dev
@@ -49,6 +49,7 @@ device vt
device kbdmux
device vt_efifb
+device vt_simplefb
# Pseudo devices.
device crypto # core crypto support
diff --git a/sys/conf/files b/sys/conf/files
index ec3ffa0bffdd..8c573d3293ec 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -3432,6 +3432,7 @@ dev/vt/colors/vt_termcolors.c optional vt
dev/vt/font/vt_font_default.c optional vt
dev/vt/font/vt_mouse_cursor.c optional vt
dev/vt/hw/efifb/efifb.c optional vt_efifb
+dev/vt/hw/simplefb/simplefb.c optional vt_simplefb
dev/vt/hw/vbefb/vbefb.c optional vt_vbefb
dev/vt/hw/fb/vt_fb.c optional vt
dev/vt/hw/vga/vt_vga.c optional vt vt_vga
diff --git a/sys/dev/vt/hw/simplefb/simplefb.c b/sys/dev/vt/hw/simplefb/simplefb.c
new file mode 100644
index 000000000000..8fdc7146f0a8
--- /dev/null
+++ b/sys/dev/vt/hw/simplefb/simplefb.c
@@ -0,0 +1,226 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2014 The FreeBSD Foundation
+ * Copyright (c) 2021 Andrew Turner
+ *
+ * Portions of this software was developed by Aleksandr Rybalko under
+ * sponsorship from the FreeBSD Foundation.
+ *
+ * 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 AUTHOR 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 AUTHOR 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>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/fbio.h>
+
+#include <vm/vm.h>
+#include <vm/pmap.h>
+
+#include <dev/vt/vt.h>
+#include <dev/vt/hw/fb/vt_fb.h>
+#include <dev/vt/colors/vt_termcolors.h>
+
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_subr.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+static vd_init_t vt_simplefb_init;
+static vd_fini_t vt_simplefb_fini;
+static vd_probe_t vt_simplefb_probe;
+
+static struct vt_driver vt_simplefb_driver = {
+ .vd_name = "simplefb",
+ .vd_probe = vt_simplefb_probe,
+ .vd_init = vt_simplefb_init,
+ .vd_fini = vt_simplefb_fini,
+ .vd_blank = vt_fb_blank,
+ .vd_bitblt_text = vt_fb_bitblt_text,
+ .vd_invalidate_text = vt_fb_invalidate_text,
+ .vd_bitblt_bmp = vt_fb_bitblt_bitmap,
+ .vd_drawrect = vt_fb_drawrect,
+ .vd_setpixel = vt_fb_setpixel,
+ .vd_fb_ioctl = vt_fb_ioctl,
+ .vd_fb_mmap = vt_fb_mmap,
+ .vd_suspend = vt_suspend,
+ .vd_resume = vt_resume,
+ /* Better than efifb, but still generic driver. */
+ .vd_priority = VD_PRIORITY_GENERIC + 2,
+};
+
+struct {
+ const char *name;
+ int rbits, rshift;
+ int gbits, gshift;
+ int bbits, bshift;
+ int depth;
+ enum vt_color_format format;
+} simplefb_formats[] = {
+ {
+ .name = "r5g6b5",
+ .rbits = 5, .rshift = 11,
+ .gbits = 6, .gshift = 5,
+ .bbits = 5, .bshift = 0,
+ .depth = 16, .format = COLOR_FORMAT_RGB,
+ },
+ {
+ .name = "r8g8b8",
+ .rbits = 8, .rshift = 16,
+ .gbits = 8, .gshift = 8,
+ .bbits = 8, .bshift = 0,
+ .depth = 24, .format = COLOR_FORMAT_RGB,
+ },
+ {
+ .name = "a8r8g8b8",
+ .rbits = 8, .rshift = 16,
+ .gbits = 8, .gshift = 8,
+ .bbits = 8, .bshift = 0,
+ .depth = 32, .format = COLOR_FORMAT_RGB,
+ },
+ {
+ .name = "x8r8g8b8",
+ .rbits = 8, .rshift = 16,
+ .gbits = 8, .gshift = 8,
+ .bbits = 8, .bshift = 0,
+ .depth = 32, .format = COLOR_FORMAT_RGB,
+ },
+ {
+ .name = "x2r10g10b10",
+ .rbits = 10, .rshift = 20,
+ .gbits = 10, .gshift = 10,
+ .bbits = 10, .bshift = 0,
+ .depth = 32, .format = COLOR_FORMAT_RGB,
+ },
+};
+
+static struct fb_info local_info;
+VT_DRIVER_DECLARE(vt_simplefb, vt_simplefb_driver);
+
+static bool
+vt_simplefb_node(phandle_t *nodep)
+{
+ phandle_t chosen, node;
+
+ chosen = OF_finddevice("/chosen");
+ if (chosen == -1)
+ return (false);
+
+ for (node = OF_child(chosen); node != 0; node = OF_peer(node)) {
+ if (ofw_bus_node_is_compatible(node, "simple-framebuffer"))
+ break;
+ }
+ if (node == 0)
+ return (false);
+
+ if (nodep != NULL)
+ *nodep = node;
+
+ return (true);
+}
+
+static int
+vt_simplefb_probe(struct vt_device *vd)
+{
+ int disabled;
+
+ disabled = 0;
+ TUNABLE_INT_FETCH("hw.syscons.disable", &disabled);
+ if (disabled != 0)
+ return (CN_DEAD);
+
+ if (!vt_simplefb_node(NULL))
+ return (CN_DEAD);
+
+ return (CN_INTERNAL);
+}
+
+static int
+vt_simplefb_init(struct vt_device *vd)
+{
+ char format[16];
+ pcell_t height, width, stride;
+ struct fb_info *sc;
+ phandle_t node;
+ bus_size_t size;
+ int error;
+
+ /* Initialize softc */
+ vd->vd_softc = sc = &local_info;
+
+ if (!vt_simplefb_node(&node))
+ return (CN_DEAD);
+
+ if (OF_getencprop(node, "height", &height, sizeof(height)) == -1 ||
+ OF_getencprop(node, "width", &width, sizeof(width)) == -1 ||
+ OF_getencprop(node, "stride", &stride, sizeof(stride)) == -1 ||
+ OF_getprop(node, "format", format, sizeof(format)) == -1) {
+ return (CN_DEAD);
+ }
+
+ sc->fb_height = height;
+ sc->fb_width = width;
+ sc->fb_stride = stride;
+ sc->fb_cmsize = NCOLORS;
+
+ error = 1;
+ for (int i = 0; i < nitems(simplefb_formats); i++) {
+ if (strcmp(format, simplefb_formats[i].name) == 0) {
+ vt_config_cons_colors(sc,
+ simplefb_formats[i].format,
+ (1 << simplefb_formats[i].rbits) - 1,
+ simplefb_formats[i].rshift,
+ (1 << simplefb_formats[i].gbits) - 1,
+ simplefb_formats[i].gshift,
+ (1 << simplefb_formats[i].bbits) - 1,
+ simplefb_formats[i].bshift);
+ sc->fb_depth = sc->fb_bpp = simplefb_formats[i].depth;
+ error = 0;
+ break;
+ }
+ }
+ if (error != 0)
+ return (CN_DEAD);
+
+ ofw_reg_to_paddr(node, 0, &sc->fb_pbase, &size, NULL);
+ sc->fb_vbase = (intptr_t)pmap_mapdev_attr(sc->fb_pbase,
+ size, VM_MEMATTR_WRITE_COMBINING);
+ sc->fb_size = size;
+
+ vt_fb_init(vd);
+
+ return (CN_INTERNAL);
+}
+
+static void
+vt_simplefb_fini(struct vt_device *vd, void *softc)
+{
+ struct fb_info *sc;
+
+ sc = softc;
+ vt_fb_fini(vd, softc);
+ pmap_unmapdev((void *)sc->fb_vbase, sc->fb_size);
+}