drivers/gpu/drm/qxl/qxl_drv.c - kernel/quantenna - Git at Google

 /* 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 "drm_crtc_helper.h"
 #include "qxl_drv.h"
 #include "qxl_object.h"

 extern int qxl_max_ioctls;
 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)
 {
 	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 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;
 	struct drm_crtc *crtc;

 	drm_kms_helper_poll_disable(dev);

 	console_lock();
 	qxl_fbdev_set_suspend(qdev, 1);
 	console_unlock();

 	/* unpin the front buffers */
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
 		if (crtc->enabled)
 			(*crtc_funcs->disable)(crtc);
 	}

 	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);
 	drm_helper_resume_force_mode(dev);

 	console_lock();
 	qxl_fbdev_set_suspend(qdev, 0);
 	console_unlock();

 	drm_kms_helper_poll_enable(dev);
 	return 0;
 }

 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 u32 qxl_noop_get_vblank_counter(struct drm_device *dev,
 				       unsigned int pipe)
 {
 	return 0;
 }

 static int qxl_noop_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	return 0;
 }

 static void qxl_noop_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 }

 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,
 	.load = qxl_driver_load,
 	.unload = qxl_driver_unload,
 	.get_vblank_counter = qxl_noop_get_vblank_counter,
 	.enable_vblank = qxl_noop_enable_vblank,
 	.disable_vblank = qxl_noop_disable_vblank,

 	.set_busid = drm_pci_set_busid,

 	.dumb_create = qxl_mode_dumb_create,
 	.dumb_map_offset = qxl_mode_dumb_mmap,
 	.dumb_destroy = drm_gem_dumb_destroy,
 #if defined(CONFIG_DEBUG_FS)
 	.debugfs_init = qxl_debugfs_init,
 	.debugfs_cleanup = qxl_debugfs_takedown,
 #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 = 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 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");
	/* 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 "drm_crtc_helper.h"
	#include "qxl_drv.h"
	#include "qxl_object.h"

	extern int qxl_max_ioctls;
	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)
	{
	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 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;
	struct drm_crtc *crtc;

	drm_kms_helper_poll_disable(dev);

	console_lock();
	qxl_fbdev_set_suspend(qdev, 1);
	console_unlock();

	/* unpin the front buffers */
	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
	const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
	if (crtc->enabled)
	(*crtc_funcs->disable)(crtc);
	}

	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);
	drm_helper_resume_force_mode(dev);

	console_lock();
	qxl_fbdev_set_suspend(qdev, 0);
	console_unlock();

	drm_kms_helper_poll_enable(dev);
	return 0;
	}

	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 u32 qxl_noop_get_vblank_counter(struct drm_device *dev,
	unsigned int pipe)
	{
	return 0;
	}

	static int qxl_noop_enable_vblank(struct drm_device *dev, unsigned int pipe)
	{
	return 0;
	}

	static void qxl_noop_disable_vblank(struct drm_device *dev, unsigned int pipe)
	{
	}

	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,
	.load = qxl_driver_load,
	.unload = qxl_driver_unload,
	.get_vblank_counter = qxl_noop_get_vblank_counter,
	.enable_vblank = qxl_noop_enable_vblank,
	.disable_vblank = qxl_noop_disable_vblank,

	.set_busid = drm_pci_set_busid,

	.dumb_create = qxl_mode_dumb_create,
	.dumb_map_offset = qxl_mode_dumb_mmap,
	.dumb_destroy = drm_gem_dumb_destroy,
	#if defined(CONFIG_DEBUG_FS)
	.debugfs_init = qxl_debugfs_init,
	.debugfs_cleanup = qxl_debugfs_takedown,
	#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 = 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 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");