![Max Staudt](/assets/img/avatar_default.png)
Up until now, the bochsdrm driver didn't handle the nomodeset option at boot, and didn't provide a "modeset" module option either. This patch implements both. The new parameter can be used by specifying bochs-drm.modeset=0 at boot time. Signed-off-by: Max Staudt <mstaudt@suse.de> Link: http://patchwork.freedesktop.org/patch/msgid/1484763012-17783-1-git-send-email-mstaudt@suse.de Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: David Airlie <airlied@gmail.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
241 lines
5.6 KiB
C
241 lines
5.6 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <drm/drm_fb_helper.h>
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#include "bochs.h"
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static int bochs_modeset = -1;
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module_param_named(modeset, bochs_modeset, int, 0444);
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MODULE_PARM_DESC(modeset, "enable/disable kernel modesetting");
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static bool enable_fbdev = true;
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module_param_named(fbdev, enable_fbdev, bool, 0444);
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MODULE_PARM_DESC(fbdev, "register fbdev device");
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/* ---------------------------------------------------------------------- */
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/* drm interface */
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static void bochs_unload(struct drm_device *dev)
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{
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struct bochs_device *bochs = dev->dev_private;
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bochs_fbdev_fini(bochs);
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bochs_kms_fini(bochs);
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bochs_mm_fini(bochs);
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bochs_hw_fini(dev);
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kfree(bochs);
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dev->dev_private = NULL;
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}
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static int bochs_load(struct drm_device *dev, unsigned long flags)
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{
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struct bochs_device *bochs;
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int ret;
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bochs = kzalloc(sizeof(*bochs), GFP_KERNEL);
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if (bochs == NULL)
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return -ENOMEM;
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dev->dev_private = bochs;
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bochs->dev = dev;
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ret = bochs_hw_init(dev, flags);
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if (ret)
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goto err;
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ret = bochs_mm_init(bochs);
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if (ret)
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goto err;
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ret = bochs_kms_init(bochs);
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if (ret)
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goto err;
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if (enable_fbdev)
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bochs_fbdev_init(bochs);
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return 0;
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err:
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bochs_unload(dev);
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return ret;
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}
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static const struct file_operations bochs_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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.compat_ioctl = drm_compat_ioctl,
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.poll = drm_poll,
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.read = drm_read,
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.llseek = no_llseek,
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.mmap = bochs_mmap,
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};
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static struct drm_driver bochs_driver = {
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.driver_features = DRIVER_GEM | DRIVER_MODESET,
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.load = bochs_load,
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.unload = bochs_unload,
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.set_busid = drm_pci_set_busid,
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.fops = &bochs_fops,
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.name = "bochs-drm",
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.desc = "bochs dispi vga interface (qemu stdvga)",
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.date = "20130925",
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.major = 1,
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.minor = 0,
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.gem_free_object_unlocked = bochs_gem_free_object,
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.dumb_create = bochs_dumb_create,
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.dumb_map_offset = bochs_dumb_mmap_offset,
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.dumb_destroy = drm_gem_dumb_destroy,
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};
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/* ---------------------------------------------------------------------- */
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/* pm interface */
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#ifdef CONFIG_PM_SLEEP
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static int bochs_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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struct bochs_device *bochs = drm_dev->dev_private;
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drm_kms_helper_poll_disable(drm_dev);
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if (bochs->fb.initialized) {
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console_lock();
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drm_fb_helper_set_suspend(&bochs->fb.helper, 1);
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console_unlock();
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}
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return 0;
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}
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static int bochs_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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struct bochs_device *bochs = drm_dev->dev_private;
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drm_helper_resume_force_mode(drm_dev);
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if (bochs->fb.initialized) {
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console_lock();
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drm_fb_helper_set_suspend(&bochs->fb.helper, 0);
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console_unlock();
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}
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drm_kms_helper_poll_enable(drm_dev);
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return 0;
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}
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#endif
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static const struct dev_pm_ops bochs_pm_ops = {
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SET_SYSTEM_SLEEP_PM_OPS(bochs_pm_suspend,
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bochs_pm_resume)
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};
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/* ---------------------------------------------------------------------- */
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/* pci interface */
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static int bochs_kick_out_firmware_fb(struct pci_dev *pdev)
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{
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struct apertures_struct *ap;
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ap = alloc_apertures(1);
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if (!ap)
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return -ENOMEM;
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ap->ranges[0].base = pci_resource_start(pdev, 0);
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ap->ranges[0].size = pci_resource_len(pdev, 0);
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drm_fb_helper_remove_conflicting_framebuffers(ap, "bochsdrmfb", false);
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kfree(ap);
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return 0;
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}
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static int bochs_pci_probe(struct pci_dev *pdev,
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const struct pci_device_id *ent)
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{
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unsigned long fbsize;
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int ret;
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fbsize = pci_resource_len(pdev, 0);
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if (fbsize < 4 * 1024 * 1024) {
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DRM_ERROR("less than 4 MB video memory, ignoring device\n");
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return -ENOMEM;
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}
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ret = bochs_kick_out_firmware_fb(pdev);
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if (ret)
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return ret;
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return drm_get_pci_dev(pdev, ent, &bochs_driver);
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}
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static void bochs_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 pci_device_id bochs_pci_tbl[] = {
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{
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.vendor = 0x1234,
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.device = 0x1111,
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.subvendor = PCI_SUBVENDOR_ID_REDHAT_QUMRANET,
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.subdevice = PCI_SUBDEVICE_ID_QEMU,
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.driver_data = BOCHS_QEMU_STDVGA,
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},
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{
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.vendor = 0x1234,
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.device = 0x1111,
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.subvendor = PCI_ANY_ID,
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.subdevice = PCI_ANY_ID,
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.driver_data = BOCHS_UNKNOWN,
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},
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{ /* end of list */ }
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};
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static struct pci_driver bochs_pci_driver = {
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.name = "bochs-drm",
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.id_table = bochs_pci_tbl,
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.probe = bochs_pci_probe,
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.remove = bochs_pci_remove,
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.driver.pm = &bochs_pm_ops,
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};
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/* ---------------------------------------------------------------------- */
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/* module init/exit */
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static int __init bochs_init(void)
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{
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if (vgacon_text_force() && bochs_modeset == -1)
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return -EINVAL;
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if (bochs_modeset == 0)
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return -EINVAL;
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return drm_pci_init(&bochs_driver, &bochs_pci_driver);
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}
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static void __exit bochs_exit(void)
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{
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drm_pci_exit(&bochs_driver, &bochs_pci_driver);
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}
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module_init(bochs_init);
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module_exit(bochs_exit);
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MODULE_DEVICE_TABLE(pci, bochs_pci_tbl);
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MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>");
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MODULE_LICENSE("GPL");
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