--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+
+#include "bochs.h"
+
+static bool enable_fbdev = true;
+module_param_named(fbdev, enable_fbdev, bool, 0444);
+MODULE_PARM_DESC(fbdev, "register fbdev device");
+
+/* ---------------------------------------------------------------------- */
+/* drm interface */
+
+static int bochs_unload(struct drm_device *dev)
+{
+ struct bochs_device *bochs = dev->dev_private;
+
+ bochs_fbdev_fini(bochs);
+ bochs_kms_fini(bochs);
+ bochs_mm_fini(bochs);
+ bochs_hw_fini(dev);
+ kfree(bochs);
+ dev->dev_private = NULL;
+ return 0;
+}
+
+static int bochs_load(struct drm_device *dev, unsigned long flags)
+{
+ struct bochs_device *bochs;
+ int ret;
+
+ bochs = kzalloc(sizeof(*bochs), GFP_KERNEL);
+ if (bochs == NULL)
+ return -ENOMEM;
+ dev->dev_private = bochs;
+ bochs->dev = dev;
+
+ ret = bochs_hw_init(dev, flags);
+ if (ret)
+ goto err;
+
+ ret = bochs_mm_init(bochs);
+ if (ret)
+ goto err;
+
+ ret = bochs_kms_init(bochs);
+ if (ret)
+ goto err;
+
+ if (enable_fbdev)
+ bochs_fbdev_init(bochs);
+
+ return 0;
+
+err:
+ bochs_unload(dev);
+ return ret;
+}
+
+static const struct file_operations bochs_fops = {
+ .owner = THIS_MODULE,
+ .open = drm_open,
+ .release = drm_release,
+ .unlocked_ioctl = drm_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = drm_compat_ioctl,
+#endif
+ .poll = drm_poll,
+ .read = drm_read,
+ .llseek = no_llseek,
+ .mmap = bochs_mmap,
+};
+
+static struct drm_driver bochs_driver = {
+ .driver_features = DRIVER_GEM | DRIVER_MODESET,
+ .load = bochs_load,
+ .unload = bochs_unload,
+ .set_busid = drm_pci_set_busid,
+ .fops = &bochs_fops,
+ .name = "bochs-drm",
+ .desc = "bochs dispi vga interface (qemu stdvga)",
+ .date = "20130925",
+ .major = 1,
+ .minor = 0,
+ .gem_free_object = bochs_gem_free_object,
+ .dumb_create = bochs_dumb_create,
+ .dumb_map_offset = bochs_dumb_mmap_offset,
+ .dumb_destroy = drm_gem_dumb_destroy,
+};
+
+/* ---------------------------------------------------------------------- */
+/* pm interface */
+
+#ifdef CONFIG_PM_SLEEP
+static int bochs_pm_suspend(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct drm_device *drm_dev = pci_get_drvdata(pdev);
+ struct bochs_device *bochs = drm_dev->dev_private;
+
+ drm_kms_helper_poll_disable(drm_dev);
+
+ if (bochs->fb.initialized) {
+ console_lock();
+ fb_set_suspend(bochs->fb.helper.fbdev, 1);
+ console_unlock();
+ }
+
+ return 0;
+}
+
+static int bochs_pm_resume(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct drm_device *drm_dev = pci_get_drvdata(pdev);
+ struct bochs_device *bochs = drm_dev->dev_private;
+
+ drm_helper_resume_force_mode(drm_dev);
+
+ if (bochs->fb.initialized) {
+ console_lock();
+ fb_set_suspend(bochs->fb.helper.fbdev, 0);
+ console_unlock();
+ }
+
+ drm_kms_helper_poll_enable(drm_dev);
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops bochs_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(bochs_pm_suspend,
+ bochs_pm_resume)
+};
+
+/* ---------------------------------------------------------------------- */
+/* pci interface */
+
+static int bochs_kick_out_firmware_fb(struct pci_dev *pdev)
+{
+ struct apertures_struct *ap;
+
+ ap = alloc_apertures(1);
+ if (!ap)
+ return -ENOMEM;
+
+ ap->ranges[0].base = pci_resource_start(pdev, 0);
+ ap->ranges[0].size = pci_resource_len(pdev, 0);
+ remove_conflicting_framebuffers(ap, "bochsdrmfb", false);
+ kfree(ap);
+
+ return 0;
+}
+
+static int bochs_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ int ret;
+
+ ret = bochs_kick_out_firmware_fb(pdev);
+ if (ret)
+ return ret;
+
+ return drm_get_pci_dev(pdev, ent, &bochs_driver);
+}
+
+static void bochs_pci_remove(struct pci_dev *pdev)
+{
+ struct drm_device *dev = pci_get_drvdata(pdev);
+
+ drm_put_dev(dev);
+}
+
+static const struct pci_device_id bochs_pci_tbl[] = {
+ {
+ .vendor = 0x1234,
+ .device = 0x1111,
+ .subvendor = 0x1af4,
+ .subdevice = 0x1100,
+ .driver_data = BOCHS_QEMU_STDVGA,
+ },
+ {
+ .vendor = 0x1234,
+ .device = 0x1111,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = BOCHS_UNKNOWN,
+ },
+ { /* end of list */ }
+};
+
+static struct pci_driver bochs_pci_driver = {
+ .name = "bochs-drm",
+ .id_table = bochs_pci_tbl,
+ .probe = bochs_pci_probe,
+ .remove = bochs_pci_remove,
+ .driver.pm = &bochs_pm_ops,
+};
+
+/* ---------------------------------------------------------------------- */
+/* module init/exit */
+
+static int __init bochs_init(void)
+{
+ return drm_pci_init(&bochs_driver, &bochs_pci_driver);
+}
+
+static void __exit bochs_exit(void)
+{
+ drm_pci_exit(&bochs_driver, &bochs_pci_driver);
+}
+
+module_init(bochs_init);
+module_exit(bochs_exit);
+
+MODULE_DEVICE_TABLE(pci, bochs_pci_tbl);
+MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff