linux_dsm_epyc7002/drivers/gpu/drm/qxl/qxl_drv.c
Dave Airlie 07f8d9bdb2 drm/qxl: add support for > 1 output
This adds support for a default of 4 heads, with a command line
parameter to change the default number.

It also overhauls the modesetting code to handle this case properly,
and send the correct things to the hardware at the right time.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-07-05 10:44:10 +10:00

150 lines
4.2 KiB
C

/* vim: set ts=8 sw=8 tw=78 ai noexpandtab */
/* qxl_drv.c -- QXL driver -*- linux-c -*-
*
* Copyright 2011 Red Hat, Inc.
* 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
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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:
* Dave Airlie <airlie@redhat.com>
* Alon Levy <alevy@redhat.com>
*/
#include <linux/module.h>
#include <linux/console.h>
#include "drmP.h"
#include "drm/drm.h"
#include "qxl_drv.h"
extern int qxl_max_ioctls;
static DEFINE_PCI_DEVICE_TABLE(pciidlist) = {
{ 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8,
0xffff00, 0 },
{ 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_OTHER << 8,
0xffff00, 0 },
{ 0, 0, 0 },
};
MODULE_DEVICE_TABLE(pci, pciidlist);
static int qxl_modeset = -1;
int qxl_num_crtc = 4;
MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
module_param_named(modeset, qxl_modeset, int, 0400);
MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)");
module_param_named(num_heads, qxl_num_crtc, int, 0400);
static struct drm_driver qxl_driver;
static struct pci_driver qxl_pci_driver;
static int
qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
if (pdev->revision < 4) {
DRM_ERROR("qxl too old, doesn't support client_monitors_config,"
" use xf86-video-qxl in user mode");
return -EINVAL; /* TODO: ENODEV ? */
}
return drm_get_pci_dev(pdev, ent, &qxl_driver);
}
static void
qxl_pci_remove(struct pci_dev *pdev)
{
struct drm_device *dev = pci_get_drvdata(pdev);
drm_put_dev(dev);
}
static struct pci_driver qxl_pci_driver = {
.name = DRIVER_NAME,
.id_table = pciidlist,
.probe = qxl_pci_probe,
.remove = qxl_pci_remove,
};
static const struct file_operations qxl_fops = {
.owner = THIS_MODULE,
.open = drm_open,
.release = drm_release,
.unlocked_ioctl = drm_ioctl,
.poll = drm_poll,
.fasync = drm_fasync,
.mmap = qxl_mmap,
};
static struct drm_driver qxl_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET |
DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED,
.dev_priv_size = 0,
.load = qxl_driver_load,
.unload = qxl_driver_unload,
.dumb_create = qxl_mode_dumb_create,
.dumb_map_offset = qxl_mode_dumb_mmap,
.dumb_destroy = qxl_mode_dumb_destroy,
#if defined(CONFIG_DEBUG_FS)
.debugfs_init = qxl_debugfs_init,
.debugfs_cleanup = qxl_debugfs_takedown,
#endif
.gem_init_object = qxl_gem_object_init,
.gem_free_object = qxl_gem_object_free,
.gem_open_object = qxl_gem_object_open,
.gem_close_object = qxl_gem_object_close,
.fops = &qxl_fops,
.ioctls = qxl_ioctls,
.irq_handler = qxl_irq_handler,
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
.major = 0,
.minor = 1,
.patchlevel = 0,
};
static int __init qxl_init(void)
{
#ifdef CONFIG_VGA_CONSOLE
if (vgacon_text_force() && qxl_modeset == -1)
return -EINVAL;
#endif
if (qxl_modeset == 0)
return -EINVAL;
qxl_driver.num_ioctls = qxl_max_ioctls;
return drm_pci_init(&qxl_driver, &qxl_pci_driver);
}
static void __exit qxl_exit(void)
{
drm_pci_exit(&qxl_driver, &qxl_pci_driver);
}
module_init(qxl_init);
module_exit(qxl_exit);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL and additional rights");