// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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*/
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_managed.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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/* ---------------------------------------------------------------------- */
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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_mm_fini(bochs);
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}
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static int bochs_load(struct drm_device *dev)
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{
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struct bochs_device *bochs;
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int ret;
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bochs = drmm_kzalloc(dev, 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);
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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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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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DEFINE_DRM_GEM_FOPS(bochs_fops);
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static struct drm_driver bochs_driver = {
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.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
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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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DRM_GEM_VRAM_DRIVER,
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.release = bochs_unload,
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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 drm_device *drm_dev = dev_get_drvdata(dev);
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return drm_mode_config_helper_suspend(drm_dev);
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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 drm_device *drm_dev = dev_get_drvdata(dev);
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return drm_mode_config_helper_resume(drm_dev);
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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_pci_probe(struct pci_dev *pdev,
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const struct pci_device_id *ent)
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{
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struct drm_device *dev;
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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 = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "bochsdrmfb");
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if (ret)
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return ret;
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dev = drm_dev_alloc(&bochs_driver, &pdev->dev);
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if (IS_ERR(dev))
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return PTR_ERR(dev);
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ret = pci_enable_device(pdev);
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if (ret)
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goto err_free_dev;
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dev->pdev = pdev;
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pci_set_drvdata(pdev, dev);
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ret = bochs_load(dev);
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if (ret)
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goto err_free_dev;
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ret = drm_dev_register(dev, 0);
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if (ret)
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goto err_unload;
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drm_fbdev_generic_setup(dev, 32);
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return ret;
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err_unload:
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bochs_unload(dev);
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err_free_dev:
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drm_dev_put(dev);
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return ret;
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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_dev_unplug(dev);
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drm_atomic_helper_shutdown(dev);
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bochs_hw_fini(dev);
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drm_dev_put(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 pci_register_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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pci_unregister_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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