kernel_samsung_a34x-permissive/drivers/gpu/drm/qxl/qxl_drv.c

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/* 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 <drm/drmP.h>
#include <drm/drm.h>
#include <drm/drm_crtc_helper.h>
#include "qxl_drv.h"
#include "qxl_object.h"
static const struct pci_device_id 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)
{
struct qxl_device *qdev;
int ret;
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 ? */
}
qdev = kzalloc(sizeof(struct qxl_device), GFP_KERNEL);
if (!qdev)
return -ENOMEM;
ret = pci_enable_device(pdev);
if (ret)
goto free_dev;
ret = qxl_device_init(qdev, &qxl_driver, pdev);
if (ret)
goto disable_pci;
ret = qxl_modeset_init(qdev);
if (ret)
goto unload;
drm_kms_helper_poll_init(&qdev->ddev);
/* Complete initialization. */
ret = drm_dev_register(&qdev->ddev, ent->driver_data);
if (ret)
goto modeset_cleanup;
return 0;
modeset_cleanup:
qxl_modeset_fini(qdev);
unload:
qxl_device_fini(qdev);
disable_pci:
pci_disable_device(pdev);
free_dev:
kfree(qdev);
return ret;
}
static void
qxl_pci_remove(struct pci_dev *pdev)
{
struct drm_device *dev = pci_get_drvdata(pdev);
struct qxl_device *qdev = dev->dev_private;
drm_dev_unregister(dev);
qxl_modeset_fini(qdev);
qxl_device_fini(qdev);
dev->dev_private = NULL;
kfree(qdev);
drm_dev_unref(dev);
}
static const struct file_operations qxl_fops = {
.owner = THIS_MODULE,
.open = drm_open,
.release = drm_release,
.unlocked_ioctl = drm_ioctl,
.poll = drm_poll,
.read = drm_read,
.mmap = qxl_mmap,
};
static int qxl_drm_freeze(struct drm_device *dev)
{
struct pci_dev *pdev = dev->pdev;
struct qxl_device *qdev = dev->dev_private;
int ret;
ret = drm_mode_config_helper_suspend(dev);
if (ret)
return ret;
qxl_destroy_monitors_object(qdev);
qxl_surf_evict(qdev);
qxl_vram_evict(qdev);
while (!qxl_check_idle(qdev->command_ring));
while (!qxl_check_idle(qdev->release_ring))
qxl_queue_garbage_collect(qdev, 1);
pci_save_state(pdev);
return 0;
}
static int qxl_drm_resume(struct drm_device *dev, bool thaw)
{
struct qxl_device *qdev = dev->dev_private;
qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
if (!thaw) {
qxl_reinit_memslots(qdev);
qxl_ring_init_hdr(qdev->release_ring);
}
qxl_create_monitors_object(qdev);
return drm_mode_config_helper_resume(dev);
}
static int qxl_pm_suspend(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *drm_dev = pci_get_drvdata(pdev);
int error;
error = qxl_drm_freeze(drm_dev);
if (error)
return error;
pci_disable_device(pdev);
pci_set_power_state(pdev, PCI_D3hot);
return 0;
}
static int qxl_pm_resume(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *drm_dev = pci_get_drvdata(pdev);
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
if (pci_enable_device(pdev)) {
return -EIO;
}
return qxl_drm_resume(drm_dev, false);
}
static int qxl_pm_thaw(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *drm_dev = pci_get_drvdata(pdev);
return qxl_drm_resume(drm_dev, true);
}
static int qxl_pm_freeze(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *drm_dev = pci_get_drvdata(pdev);
return qxl_drm_freeze(drm_dev);
}
static int qxl_pm_restore(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *drm_dev = pci_get_drvdata(pdev);
struct qxl_device *qdev = drm_dev->dev_private;
qxl_io_reset(qdev);
return qxl_drm_resume(drm_dev, false);
}
static const struct dev_pm_ops qxl_pm_ops = {
.suspend = qxl_pm_suspend,
.resume = qxl_pm_resume,
.freeze = qxl_pm_freeze,
.thaw = qxl_pm_thaw,
.poweroff = qxl_pm_freeze,
.restore = qxl_pm_restore,
};
static struct pci_driver qxl_pci_driver = {
.name = DRIVER_NAME,
.id_table = pciidlist,
.probe = qxl_pci_probe,
.remove = qxl_pci_remove,
.driver.pm = &qxl_pm_ops,
};
static struct drm_driver qxl_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
DRIVER_ATOMIC,
.dumb_create = qxl_mode_dumb_create,
.dumb_map_offset = qxl_mode_dumb_mmap,
#if defined(CONFIG_DEBUG_FS)
.debugfs_init = qxl_debugfs_init,
#endif
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
.gem_prime_export = drm_gem_prime_export,
.gem_prime_import = drm_gem_prime_import,
.gem_prime_pin = qxl_gem_prime_pin,
.gem_prime_unpin = qxl_gem_prime_unpin,
.gem_prime_get_sg_table = qxl_gem_prime_get_sg_table,
.gem_prime_import_sg_table = qxl_gem_prime_import_sg_table,
.gem_prime_vmap = qxl_gem_prime_vmap,
.gem_prime_vunmap = qxl_gem_prime_vunmap,
.gem_prime_mmap = qxl_gem_prime_mmap,
.gem_free_object_unlocked = 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)
{
if (vgacon_text_force() && qxl_modeset == -1)
return -EINVAL;
if (qxl_modeset == 0)
return -EINVAL;
qxl_driver.num_ioctls = qxl_max_ioctls;
return pci_register_driver(&qxl_pci_driver);
}
static void __exit qxl_exit(void)
{
pci_unregister_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");