Welcome drm support for VIA unichrome chips.

MFC after:	2 weeks

1 files changed, 123 insertions, 0 deletions

diff --git a/sys/dev/drm/via_drv.c b/sys/dev/drm/via_drv.c
new file mode 100644
index 0000000..520518d
--- /dev/null
+++ b/sys/dev/drm/via_drv.c
@@ -0,0 +1,123 @@
+/* via_drv.c -- VIA unichrome driver -*- linux-c -*-
+ * Created: Fri Aug 12 2005 by anholt@FreeBSD.org
+ */
+/*-
+ * Copyright 2005 Eric Anholt
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * ERIC ANHOLT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Eric Anholt <anholt@FreeBSD.org>
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include "dev/drm/drmP.h"
+#include "dev/drm/drm.h"
+#include "dev/drm/via_drm.h"
+#include "dev/drm/via_drv.h"
+#include "dev/drm/drm_pciids.h"
+
+/* drv_PCI_IDs comes from drm_pciids.h, generated from drm_pciids.txt. */
+static drm_pci_id_list_t via_pciidlist[] = {
+	viadrv_PCI_IDS
+};
+
+static void via_configure(struct drm_device *dev)
+{
+	dev->driver->driver_features =
+	    DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_HAVE_IRQ;
+
+	dev->driver->buf_priv_size	= sizeof(drm_via_private_t);
+	dev->driver->load		= via_driver_load;
+	dev->driver->unload		= via_driver_unload;
+	dev->driver->lastclose		= via_lastclose;
+	dev->driver->get_vblank_counter	= via_get_vblank_counter;
+	dev->driver->enable_vblank	= via_enable_vblank;
+	dev->driver->disable_vblank	= via_disable_vblank;
+	dev->driver->irq_preinstall	= via_driver_irq_preinstall;
+	dev->driver->irq_postinstall	= via_driver_irq_postinstall;
+	dev->driver->irq_uninstall	= via_driver_irq_uninstall;
+	dev->driver->irq_handler	= via_driver_irq_handler;
+	dev->driver->dma_quiescent	= via_driver_dma_quiescent;
+
+	dev->driver->ioctls		= via_ioctls;
+	dev->driver->max_ioctl		= via_max_ioctl;
+
+	dev->driver->name		= DRIVER_NAME;
+	dev->driver->desc		= DRIVER_DESC;
+	dev->driver->date		= DRIVER_DATE;
+	dev->driver->major		= DRIVER_MAJOR;
+	dev->driver->minor		= DRIVER_MINOR;
+	dev->driver->patchlevel		= DRIVER_PATCHLEVEL;
+}
+
+static int
+via_probe(device_t kdev)
+{
+	return drm_probe(kdev, via_pciidlist);
+}
+
+static int
+via_attach(device_t kdev)
+{
+	struct drm_device *dev = device_get_softc(kdev);
+
+	dev->driver = malloc(sizeof(struct drm_driver_info), DRM_MEM_DRIVER,
+	    M_WAITOK | M_ZERO);
+
+	via_configure(dev);
+
+	return drm_attach(kdev, via_pciidlist);
+}
+
+static int
+via_detach(device_t kdev)
+{
+	struct drm_device *dev = device_get_softc(kdev);
+	int ret;
+
+	ret = drm_detach(kdev);
+
+	free(dev->driver, DRM_MEM_DRIVER);
+
+	return ret;
+}
+
+static device_method_t via_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe,		via_probe),
+	DEVMETHOD(device_attach,	via_attach),
+	DEVMETHOD(device_detach,	via_detach),
+
+	{ 0, 0 }
+};
+
+static driver_t via_driver = {
+	"drm",
+	via_methods,
+	sizeof(struct drm_device)
+};
+
+extern devclass_t drm_devclass;
+DRIVER_MODULE(via, vgapci, via_driver, drm_devclass, 0, 0);
+MODULE_DEPEND(via, drm, 1, 1, 1);