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https://github.com/torvalds/linux
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dedc14e2a6
It appears that grub2 will pass framebuffer info via EFI, this causes the vram reserve to fail, so kick out efifb earlier before cirrus loads. Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=826983 Signed-off-by: Dave Airlie <airlied@redhat.com>
128 lines
3 KiB
C
128 lines
3 KiB
C
/*
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* Copyright 2012 Red Hat <mjg@redhat.com>
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License version 2. See the file COPYING in the main
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* directory of this archive for more details.
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*
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* Authors: Matthew Garrett
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* Dave Airlie
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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.h"
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#include "cirrus_drv.h"
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int cirrus_modeset = -1;
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MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
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module_param_named(modeset, cirrus_modeset, int, 0400);
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/*
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* This is the generic driver code. This binds the driver to the drm core,
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* which then performs further device association and calls our graphics init
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* functions
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*/
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static struct drm_driver driver;
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/* only bind to the cirrus chip in qemu */
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static DEFINE_PCI_DEVICE_TABLE(pciidlist) = {
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{ PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446, 0x1af4, 0x1100, 0,
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0, 0 },
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{0,}
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};
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static void cirrus_kick_out_firmware_fb(struct pci_dev *pdev)
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{
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struct apertures_struct *ap;
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bool primary = false;
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ap = alloc_apertures(1);
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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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#ifdef CONFIG_X86
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primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
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#endif
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remove_conflicting_framebuffers(ap, "cirrusdrmfb", primary);
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kfree(ap);
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}
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static int __devinit
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cirrus_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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{
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cirrus_kick_out_firmware_fb(pdev);
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return drm_get_pci_dev(pdev, ent, &driver);
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}
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static void cirrus_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 cirrus_driver_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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.mmap = cirrus_mmap,
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.poll = drm_poll,
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.fasync = drm_fasync,
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};
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static struct drm_driver driver = {
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.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_USE_MTRR,
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.load = cirrus_driver_load,
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.unload = cirrus_driver_unload,
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.fops = &cirrus_driver_fops,
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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 = DRIVER_MAJOR,
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.minor = DRIVER_MINOR,
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.patchlevel = DRIVER_PATCHLEVEL,
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.gem_init_object = cirrus_gem_init_object,
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.gem_free_object = cirrus_gem_free_object,
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.dumb_create = cirrus_dumb_create,
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.dumb_map_offset = cirrus_dumb_mmap_offset,
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.dumb_destroy = cirrus_dumb_destroy,
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};
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static struct pci_driver cirrus_pci_driver = {
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.name = DRIVER_NAME,
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.id_table = pciidlist,
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.probe = cirrus_pci_probe,
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.remove = cirrus_pci_remove,
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};
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static int __init cirrus_init(void)
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{
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#ifdef CONFIG_VGA_CONSOLE
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if (vgacon_text_force() && cirrus_modeset == -1)
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return -EINVAL;
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#endif
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if (cirrus_modeset == 0)
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return -EINVAL;
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return drm_pci_init(&driver, &cirrus_pci_driver);
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}
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static void __exit cirrus_exit(void)
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{
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drm_pci_exit(&driver, &cirrus_pci_driver);
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}
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module_init(cirrus_init);
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module_exit(cirrus_exit);
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MODULE_DEVICE_TABLE(pci, pciidlist);
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MODULE_AUTHOR(DRIVER_AUTHOR);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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