Author: gonzo
Date: Thu Nov 5 04:16:03 2015
New Revision: 290382
URL: https://svnweb.freebsd.org/changeset/base/290382
Log:
Add /dev/vcio, userland access point to VideoCore mailbox property channel
It's required by some applications in raspberrypi-userland package
Added:
head/sys/arm/broadcom/bcm2835/bcm2835_vcio.c (contents, props changed)
Modified:
head/sys/arm/broadcom/bcm2835/files.bcm283x
Added: head/sys/arm/broadcom/bcm2835/bcm2835_vcio.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/broadcom/bcm2835/bcm2835_vcio.c Thu Nov 5 04:16:03
2015 (r290382)
@@ -0,0 +1,122 @@
+/*-
+ * Copyright (c) 2015 Oleksandr Tymoshenko <go...@freebsd.org>
+ *
+ * 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/malloc.h>
+#include <sys/module.h>
+#include <sys/ioccom.h>
+#include <sys/conf.h>
+#include <sys/proc.h>
+
+#include <arm/broadcom/bcm2835/bcm2835_mbox_prop.h>
+
+MALLOC_DECLARE(M_VCIO);
+MALLOC_DEFINE(M_VCIO, "vcio", "VCIO temporary buffers");
+
+static struct cdev *sdev;
+static d_ioctl_t vcio_ioctl;
+
+static struct cdevsw vcio_devsw = {
+ /* version */ .d_version = D_VERSION,
+ /* ioctl */ .d_ioctl = vcio_ioctl,
+};
+
+#define VCIO_IOC_MAGIC 100
+#define IOCTL_MBOX_PROPERTY _IOWR(VCIO_IOC_MAGIC, 0, char *)
+
+int
+vcio_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int mode,
+ struct thread *td)
+{
+ int error;
+ void *ptr;
+ uint32_t size;
+ uint8_t *property;
+
+ error = 0;
+ switch(cmd) {
+ case IOCTL_MBOX_PROPERTY:
+ memcpy (&ptr, arg, sizeof(ptr));
+ error = copyin(ptr, &size, sizeof(size));
+
+ if (error != 0)
+ break;
+ property = malloc(size, M_VCIO, M_WAITOK);
+ if (property == NULL) {
+ error = ENOMEM;
+ break;
+ }
+
+ error = copyin(ptr, property, size);
+ if (error) {
+ free(property, M_VCIO);
+ break;
+ }
+
+ error = bcm2835_mbox_property(property, size);
+ if (error) {
+ free(property, M_VCIO);
+ break;
+ }
+
+ error = copyout(property, ptr, size);
+ free(property, M_VCIO);
+
+ break;
+ default:
+ error = EINVAL;
+ break;
+ }
+ return (error);
+}
+
+static int
+vcio_load(module_t mod, int cmd, void *arg)
+{
+ int err = 0;
+
+ switch (cmd) {
+ case MOD_LOAD:
+ sdev = make_dev(&vcio_devsw, 0, UID_ROOT, GID_WHEEL, 0600, "vcio");
+ break;
+
+ case MOD_UNLOAD:
+ destroy_dev(sdev);
+ break;
+
+ default:
+ err = EOPNOTSUPP;
+ break;
+ }
+
+ return(err);
+}
+
+DEV_MODULE(vcio, vcio_load, NULL);
+MODULE_DEPEND(vcio, mbox, 1, 1, 1);
Modified: head/sys/arm/broadcom/bcm2835/files.bcm283x
==============================================================================
--- head/sys/arm/broadcom/bcm2835/files.bcm283x Thu Nov 5 03:46:54 2015
(r290381)
+++ head/sys/arm/broadcom/bcm2835/files.bcm283x Thu Nov 5 04:16:03 2015
(r290382)
@@ -12,6 +12,7 @@ arm/broadcom/bcm2835/bcm2835_machdep.c
arm/broadcom/bcm2835/bcm2835_mbox.c standard
arm/broadcom/bcm2835/bcm2835_sdhci.c optional sdhci
arm/broadcom/bcm2835/bcm2835_spi.c optional bcm2835_spi
+arm/broadcom/bcm2835/bcm2835_vcio.c standard
arm/broadcom/bcm2835/bcm2835_wdog.c standard
arm/broadcom/bcm2835/bcm283x_dwc_fdt.c optional dwcotg fdt
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