diff options
Diffstat (limited to 'drivers/gpu/drm/bochs/bochs_drv.c')
| -rw-r--r-- | drivers/gpu/drm/bochs/bochs_drv.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bochs/bochs_drv.c b/drivers/gpu/drm/bochs/bochs_drv.c new file mode 100644 index 000000000000..395bba261c9a --- /dev/null +++ b/drivers/gpu/drm/bochs/bochs_drv.c @@ -0,0 +1,178 @@ +/* + * 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, + .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, +}; + +/* ---------------------------------------------------------------------- */ +/* 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 DEFINE_PCI_DEVICE_TABLE(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, +}; + +/* ---------------------------------------------------------------------- */ +/* 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"); |