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Commit f9aa76a8 authored by Dave Airlie's avatar Dave Airlie
Browse files

drm/kms: driver for virtual cirrus under qemu 



This is the initial driver for emulated cirrus GPU found in qemu.
This driver only supports the emulated GPU and doesn't attempt
to bind to any real cirrus GPUs.

This driver is intended to be used with xf86-video-modesetting in userspace.
It requires at least version 0.3.0

This follow the same design as ast and mgag200, and is based on work
done by Matthew Garrett previously.

This GPU has no hw cursor, and it can't scanout 32-bpp, only packed 24-bpp.
i.e. it sucks.

Reviewed-by: default avatarAdam Jackson <ajax@redhat.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 414c4531

drivers/gpu/drm/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -190,3 +190,5 @@ source "drivers/gpu/drm/udl/Kconfig" 
source "drivers/gpu/drm/ast/Kconfig"



source "drivers/gpu/drm/mgag200/Kconfig"



source "drivers/gpu/drm/cirrus/Kconfig"

drivers/gpu/drm/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -35,6 +35,7 @@ obj-$(CONFIG_DRM_MGA) += mga/ 
obj-$(CONFIG_DRM_I810)	+= i810/

obj-$(CONFIG_DRM_I915)  += i915/

obj-$(CONFIG_DRM_MGAG200) += mgag200/

obj-$(CONFIG_DRM_CIRRUS_QEMU) += cirrus/

obj-$(CONFIG_DRM_SIS)   += sis/

obj-$(CONFIG_DRM_SAVAGE)+= savage/

obj-$(CONFIG_DRM_VMWGFX)+= vmwgfx/

drivers/gpu/drm/cirrus/Kconfig

0 → 100644
+11 −0
Original line number Diff line number Diff line 
config DRM_CIRRUS_QEMU

	tristate "Cirrus driver for QEMU emulated device"

	depends on DRM && PCI && EXPERIMENTAL

	select FB_CFB_FILLRECT

	select FB_CFB_COPYAREA

	select FB_CFB_IMAGEBLIT

	select DRM_KMS_HELPER

	help

	 This is a KMS driver for emulated cirrus device in qemu.

	 It is *NOT* intended for real cirrus devices. This requires

	 the modesetting userspace X.org driver.

drivers/gpu/drm/cirrus/Makefile

0 → 100644
+5 −0
Original line number Diff line number Diff line 
ccflags-y := -Iinclude/drm

cirrus-y  := cirrus_main.o cirrus_mode.o \

	cirrus_drv.o cirrus_fbdev.o cirrus_ttm.o



obj-$(CONFIG_DRM_CIRRUS_QEMU) += cirrus.o

drivers/gpu/drm/cirrus/cirrus_drv.c

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+106 −0
Original line number Diff line number Diff line 
/*

 * Copyright 2012 Red Hat <mjg@redhat.com>

 *

 * This file is subject to the terms and conditions of the GNU General

 * Public License version 2. See the file COPYING in the main

 * directory of this archive for more details.

 *

 * Authors: Matthew Garrett

 *          Dave Airlie

 */

#include <linux/module.h>

#include <linux/console.h>

#include "drmP.h"

#include "drm.h"



#include "cirrus_drv.h"



int cirrus_modeset = -1;



MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");

module_param_named(modeset, cirrus_modeset, int, 0400);



/*

 * This is the generic driver code. This binds the driver to the drm core,

 * which then performs further device association and calls our graphics init

 * functions

 */



static struct drm_driver driver;



/* only bind to the cirrus chip in qemu */

static DEFINE_PCI_DEVICE_TABLE(pciidlist) = {

	{ PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446, 0x1af4, 0x1100, 0,

	  0, 0 },

	{0,}

};



static int __devinit

cirrus_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)

{

	return drm_get_pci_dev(pdev, ent, &driver);

}



static void cirrus_pci_remove(struct pci_dev *pdev)

{

	struct drm_device *dev = pci_get_drvdata(pdev);



	drm_put_dev(dev);

}



static const struct file_operations cirrus_driver_fops = {

	.owner = THIS_MODULE,

	.open = drm_open,

	.release = drm_release,

	.unlocked_ioctl = drm_ioctl,

	.mmap = cirrus_mmap,

	.poll = drm_poll,

	.fasync = drm_fasync,

};

static struct drm_driver driver = {

	.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_USE_MTRR,

	.load = cirrus_driver_load,

	.unload = cirrus_driver_unload,

	.fops = &cirrus_driver_fops,

	.name = DRIVER_NAME,

	.desc = DRIVER_DESC,

	.date = DRIVER_DATE,

	.major = DRIVER_MAJOR,

	.minor = DRIVER_MINOR,

	.patchlevel = DRIVER_PATCHLEVEL,

	.gem_init_object = cirrus_gem_init_object,

	.gem_free_object = cirrus_gem_free_object,

	.dumb_create = cirrus_dumb_create,

	.dumb_map_offset = cirrus_dumb_mmap_offset,

	.dumb_destroy = cirrus_dumb_destroy,

};



static struct pci_driver cirrus_pci_driver = {

	.name = DRIVER_NAME,

	.id_table = pciidlist,

	.probe = cirrus_pci_probe,

	.remove = cirrus_pci_remove,

};



static int __init cirrus_init(void)

{

	if (vgacon_text_force() && cirrus_modeset == -1)

		return -EINVAL;



	if (cirrus_modeset == 0)

		return -EINVAL;

	return drm_pci_init(&driver, &cirrus_pci_driver);

}



static void __exit cirrus_exit(void)

{

	drm_pci_exit(&driver, &cirrus_pci_driver);

}



module_init(cirrus_init);

module_exit(cirrus_exit);



MODULE_DEVICE_TABLE(pci, pciidlist);

MODULE_AUTHOR(DRIVER_AUTHOR);

MODULE_DESCRIPTION(DRIVER_DESC);

MODULE_LICENSE("GPL");