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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2012 Red Hat
*
* Authors: Matthew Garrett
* Dave Airlie
*/
#include <linux/console.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <drm/drm_drv.h>
#include <drm/drm_file.h>
#include <drm/drm_ioctl.h>
#include <drm/drm_pciids.h>
#include "mgag200_drv.h"
/*
* This is the generic driver code. This binds the driver to the drm core,
* which then performs further device association and calls our graphics init
* functions
*/
int mgag200_modeset = -1;
MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
module_param_named(modeset, mgag200_modeset, int, 0400);
int mgag200_hw_bug_no_startadd = -1;
MODULE_PARM_DESC(modeset, "HW does not interpret scanout-buffer start address correctly");
module_param_named(hw_bug_no_startadd, mgag200_hw_bug_no_startadd, int, 0400);
static struct drm_driver driver;
static const struct pci_device_id pciidlist[] = {
{ PCI_VENDOR_ID_MATROX, 0x522, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
G200_SE_A | MGAG200_FLAG_HW_BUG_NO_STARTADD},
{ PCI_VENDOR_ID_MATROX, 0x524, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_B },
{ PCI_VENDOR_ID_MATROX, 0x530, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EV },
{ PCI_VENDOR_ID_MATROX, 0x532, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_WB },
{ PCI_VENDOR_ID_MATROX, 0x533, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH },
{ PCI_VENDOR_ID_MATROX, 0x534, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_ER },
{ PCI_VENDOR_ID_MATROX, 0x536, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EW3 },
{ PCI_VENDOR_ID_MATROX, 0x538, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH3 },
{0,}
};
MODULE_DEVICE_TABLE(pci, pciidlist);
static int mga_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct drm_device *dev;
int ret;
drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "mgag200drmfb");
ret = pci_enable_device(pdev);
if (ret)
return ret;
dev = drm_dev_alloc(&driver, &pdev->dev);
if (IS_ERR(dev)) {
ret = PTR_ERR(dev);
goto err_pci_disable_device;
}
dev->pdev = pdev;
pci_set_drvdata(pdev, dev);
ret = mgag200_driver_load(dev, ent->driver_data);
if (ret)
goto err_drm_dev_put;
ret = drm_dev_register(dev, ent->driver_data);
if (ret)
goto err_mgag200_driver_unload;
drm_fbdev_generic_setup(dev, 0);
return 0;
err_mgag200_driver_unload:
mgag200_driver_unload(dev);
err_drm_dev_put:
drm_dev_put(dev);
err_pci_disable_device:
pci_disable_device(pdev);
return ret;
}
static void mga_pci_remove(struct pci_dev *pdev)
{
struct drm_device *dev = pci_get_drvdata(pdev);
drm_dev_unregister(dev);
mgag200_driver_unload(dev);
drm_dev_put(dev);
}
DEFINE_DRM_GEM_FOPS(mgag200_driver_fops);
static bool mgag200_pin_bo_at_0(const struct mga_device *mdev)
{
if (mgag200_hw_bug_no_startadd > 0) {
DRM_WARN_ONCE("Option hw_bug_no_startradd is enabled. Please "
"report the output of 'lspci -vvnn' to "
"<dri-devel@lists.freedesktop.org> if this "
"option is required to make mgag200 work "
"correctly on your system.\n");
return true;
} else if (!mgag200_hw_bug_no_startadd) {
return false;
}
return mdev->flags & MGAG200_FLAG_HW_BUG_NO_STARTADD;
}
int mgag200_driver_dumb_create(struct drm_file *file,
struct drm_device *dev,
struct drm_mode_create_dumb *args)
{
struct mga_device *mdev = to_mga_device(dev);
unsigned long pg_align;
if (WARN_ONCE(!dev->vram_mm, "VRAM MM not initialized"))
return -EINVAL;
pg_align = 0ul;
/*
* Aligning scanout buffers to the size of the video ram forces
* placement at offset 0. Works around a bug where HW does not
* respect 'startadd' field.
*/
if (mgag200_pin_bo_at_0(mdev))
pg_align = PFN_UP(mdev->mc.vram_size);
return drm_gem_vram_fill_create_dumb(file, dev, pg_align, 0, args);
}
static struct drm_driver driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET,
.fops = &mgag200_driver_fops,
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
.major = DRIVER_MAJOR,
.minor = DRIVER_MINOR,
.patchlevel = DRIVER_PATCHLEVEL,
.debugfs_init = drm_vram_mm_debugfs_init,
.dumb_create = mgag200_driver_dumb_create,
.dumb_map_offset = drm_gem_vram_driver_dumb_mmap_offset,
.gem_prime_mmap = drm_gem_prime_mmap,
};
static struct pci_driver mgag200_pci_driver = {
.name = DRIVER_NAME,
.id_table = pciidlist,
.probe = mga_pci_probe,
.remove = mga_pci_remove,
};
static int __init mgag200_init(void)
{
if (vgacon_text_force() && mgag200_modeset == -1)
return -EINVAL;
if (mgag200_modeset == 0)
return -EINVAL;
return pci_register_driver(&mgag200_pci_driver);
}
static void __exit mgag200_exit(void)
{
pci_unregister_driver(&mgag200_pci_driver);
}
module_init(mgag200_init);
module_exit(mgag200_exit);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
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