forked from Minki/linux
337eb43c8d
This breaks under the vblank timestamp cleanup patch by Daniel Vetter. Also it is pointless to return anything but zero (or any other constant) if the function doesn't actually query a hw vblank counter. The bogus return of the current drm vblank counter via direct readout or via drm_vblank_count() is found in many of the new kms drivers, but it does exactly nothing different from returning any arbitrary constant - it's a no operation. Let's simply return 0 - Easy and fast. Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com> Cc: Dave Airlie <airlied@redhat.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
296 lines
7.6 KiB
C
296 lines
7.6 KiB
C
/* vim: set ts=8 sw=8 tw=78 ai noexpandtab */
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/* qxl_drv.c -- QXL driver -*- linux-c -*-
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*
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* Copyright 2011 Red Hat, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Dave Airlie <airlie@redhat.com>
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* Alon Levy <alevy@redhat.com>
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*/
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#include <linux/module.h>
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#include <linux/console.h>
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#include "drmP.h"
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#include "drm/drm.h"
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#include "drm_crtc_helper.h"
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#include "qxl_drv.h"
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#include "qxl_object.h"
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extern int qxl_max_ioctls;
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static const struct pci_device_id pciidlist[] = {
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{ 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8,
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0xffff00, 0 },
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{ 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_OTHER << 8,
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0xffff00, 0 },
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{ 0, 0, 0 },
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};
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MODULE_DEVICE_TABLE(pci, pciidlist);
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static int qxl_modeset = -1;
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int qxl_num_crtc = 4;
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MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
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module_param_named(modeset, qxl_modeset, int, 0400);
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MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)");
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module_param_named(num_heads, qxl_num_crtc, int, 0400);
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static struct drm_driver qxl_driver;
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static struct pci_driver qxl_pci_driver;
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static int
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qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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{
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if (pdev->revision < 4) {
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DRM_ERROR("qxl too old, doesn't support client_monitors_config,"
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" use xf86-video-qxl in user mode");
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return -EINVAL; /* TODO: ENODEV ? */
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}
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return drm_get_pci_dev(pdev, ent, &qxl_driver);
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}
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static void
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qxl_pci_remove(struct pci_dev *pdev)
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{
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struct drm_device *dev = pci_get_drvdata(pdev);
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drm_put_dev(dev);
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}
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static const struct file_operations qxl_fops = {
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.owner = THIS_MODULE,
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.open = drm_open,
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.release = drm_release,
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.unlocked_ioctl = drm_ioctl,
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.poll = drm_poll,
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.read = drm_read,
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.mmap = qxl_mmap,
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};
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static int qxl_drm_freeze(struct drm_device *dev)
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{
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struct pci_dev *pdev = dev->pdev;
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struct qxl_device *qdev = dev->dev_private;
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struct drm_crtc *crtc;
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drm_kms_helper_poll_disable(dev);
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console_lock();
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qxl_fbdev_set_suspend(qdev, 1);
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console_unlock();
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/* unpin the front buffers */
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list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
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const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
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if (crtc->enabled)
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(*crtc_funcs->disable)(crtc);
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}
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qxl_destroy_monitors_object(qdev);
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qxl_surf_evict(qdev);
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qxl_vram_evict(qdev);
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while (!qxl_check_idle(qdev->command_ring));
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while (!qxl_check_idle(qdev->release_ring))
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qxl_queue_garbage_collect(qdev, 1);
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pci_save_state(pdev);
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return 0;
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}
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static int qxl_drm_resume(struct drm_device *dev, bool thaw)
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{
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struct qxl_device *qdev = dev->dev_private;
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qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
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if (!thaw) {
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qxl_reinit_memslots(qdev);
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qxl_ring_init_hdr(qdev->release_ring);
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}
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qxl_create_monitors_object(qdev);
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drm_helper_resume_force_mode(dev);
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console_lock();
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qxl_fbdev_set_suspend(qdev, 0);
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console_unlock();
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drm_kms_helper_poll_enable(dev);
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return 0;
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}
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static int qxl_pm_suspend(struct device *dev)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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struct drm_device *drm_dev = pci_get_drvdata(pdev);
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int error;
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error = qxl_drm_freeze(drm_dev);
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if (error)
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return error;
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pci_disable_device(pdev);
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pci_set_power_state(pdev, PCI_D3hot);
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return 0;
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}
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static int qxl_pm_resume(struct device *dev)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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struct drm_device *drm_dev = pci_get_drvdata(pdev);
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pci_set_power_state(pdev, PCI_D0);
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pci_restore_state(pdev);
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if (pci_enable_device(pdev)) {
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return -EIO;
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}
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return qxl_drm_resume(drm_dev, false);
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}
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static int qxl_pm_thaw(struct device *dev)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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struct drm_device *drm_dev = pci_get_drvdata(pdev);
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return qxl_drm_resume(drm_dev, true);
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}
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static int qxl_pm_freeze(struct device *dev)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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struct drm_device *drm_dev = pci_get_drvdata(pdev);
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return qxl_drm_freeze(drm_dev);
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}
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static int qxl_pm_restore(struct device *dev)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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struct drm_device *drm_dev = pci_get_drvdata(pdev);
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struct qxl_device *qdev = drm_dev->dev_private;
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qxl_io_reset(qdev);
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return qxl_drm_resume(drm_dev, false);
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}
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static u32 qxl_noop_get_vblank_counter(struct drm_device *dev, int crtc)
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{
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return 0;
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}
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static int qxl_noop_enable_vblank(struct drm_device *dev, int crtc)
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{
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return 0;
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}
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static void qxl_noop_disable_vblank(struct drm_device *dev, int crtc)
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{
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}
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static const struct dev_pm_ops qxl_pm_ops = {
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.suspend = qxl_pm_suspend,
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.resume = qxl_pm_resume,
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.freeze = qxl_pm_freeze,
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.thaw = qxl_pm_thaw,
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.poweroff = qxl_pm_freeze,
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.restore = qxl_pm_restore,
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};
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static struct pci_driver qxl_pci_driver = {
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.name = DRIVER_NAME,
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.id_table = pciidlist,
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.probe = qxl_pci_probe,
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.remove = qxl_pci_remove,
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.driver.pm = &qxl_pm_ops,
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};
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static struct drm_driver qxl_driver = {
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.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
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DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED,
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.load = qxl_driver_load,
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.unload = qxl_driver_unload,
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.get_vblank_counter = qxl_noop_get_vblank_counter,
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.enable_vblank = qxl_noop_enable_vblank,
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.disable_vblank = qxl_noop_disable_vblank,
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.set_busid = drm_pci_set_busid,
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.dumb_create = qxl_mode_dumb_create,
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.dumb_map_offset = qxl_mode_dumb_mmap,
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.dumb_destroy = drm_gem_dumb_destroy,
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#if defined(CONFIG_DEBUG_FS)
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.debugfs_init = qxl_debugfs_init,
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.debugfs_cleanup = qxl_debugfs_takedown,
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#endif
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.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
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.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
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.gem_prime_export = drm_gem_prime_export,
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.gem_prime_import = drm_gem_prime_import,
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.gem_prime_pin = qxl_gem_prime_pin,
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.gem_prime_unpin = qxl_gem_prime_unpin,
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.gem_prime_get_sg_table = qxl_gem_prime_get_sg_table,
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.gem_prime_import_sg_table = qxl_gem_prime_import_sg_table,
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.gem_prime_vmap = qxl_gem_prime_vmap,
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.gem_prime_vunmap = qxl_gem_prime_vunmap,
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.gem_prime_mmap = qxl_gem_prime_mmap,
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.gem_free_object = qxl_gem_object_free,
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.gem_open_object = qxl_gem_object_open,
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.gem_close_object = qxl_gem_object_close,
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.fops = &qxl_fops,
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.ioctls = qxl_ioctls,
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.irq_handler = qxl_irq_handler,
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.name = DRIVER_NAME,
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.desc = DRIVER_DESC,
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.date = DRIVER_DATE,
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.major = 0,
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.minor = 1,
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.patchlevel = 0,
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};
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static int __init qxl_init(void)
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{
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#ifdef CONFIG_VGA_CONSOLE
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if (vgacon_text_force() && qxl_modeset == -1)
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return -EINVAL;
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#endif
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if (qxl_modeset == 0)
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return -EINVAL;
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qxl_driver.num_ioctls = qxl_max_ioctls;
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return drm_pci_init(&qxl_driver, &qxl_pci_driver);
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}
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static void __exit qxl_exit(void)
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{
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drm_pci_exit(&qxl_driver, &qxl_pci_driver);
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}
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module_init(qxl_init);
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module_exit(qxl_exit);
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MODULE_AUTHOR(DRIVER_AUTHOR);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL and additional rights");
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