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4adf0b49ee
Several MGA G200 SE machines don't respect the value of the startadd
register field. After more feedback on affected machines, neither PCI
subvendor ID nor the internal ID seem to hint towards the bug. All
affected machines have a PCI ID of 0x0522 (i.e., G200 SE A). It was
decided to flag all G200 SE A machines as broken.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Fixes: 1591fadf85 ("drm/mgag200: Add workaround for HW that does not support 'startadd'")
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: John Donnelly <john.p.donnelly@oracle.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: "Y.C. Chen" <yc_chen@aspeedtech.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "José Roberto de Souza" <jose.souza@intel.com>
Cc: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v5.3+
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Allison Randal <allison@lohutok.net>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Noralf Trønnes" <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191206081901.9938-1-tzimmermann@suse.de
139 lines
3.6 KiB
C
139 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright 2012 Red Hat
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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 <drm/drm_drv.h>
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#include <drm/drm_file.h>
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#include <drm/drm_ioctl.h>
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#include <drm/drm_pci.h>
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#include <drm/drm_pciids.h>
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#include "mgag200_drv.h"
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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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int mgag200_modeset = -1;
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MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
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module_param_named(modeset, mgag200_modeset, int, 0400);
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static struct drm_driver driver;
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static const struct pci_device_id pciidlist[] = {
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{ PCI_VENDOR_ID_MATROX, 0x522, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
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G200_SE_A | MGAG200_FLAG_HW_BUG_NO_STARTADD},
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{ PCI_VENDOR_ID_MATROX, 0x524, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_B },
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{ PCI_VENDOR_ID_MATROX, 0x530, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EV },
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{ PCI_VENDOR_ID_MATROX, 0x532, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_WB },
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{ PCI_VENDOR_ID_MATROX, 0x533, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH },
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{ PCI_VENDOR_ID_MATROX, 0x534, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_ER },
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{ PCI_VENDOR_ID_MATROX, 0x536, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EW3 },
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{ PCI_VENDOR_ID_MATROX, 0x538, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH3 },
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{0,}
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};
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MODULE_DEVICE_TABLE(pci, pciidlist);
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static int mga_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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{
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drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "mgag200drmfb");
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return drm_get_pci_dev(pdev, ent, &driver);
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}
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static void mga_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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DEFINE_DRM_GEM_FOPS(mgag200_driver_fops);
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static bool mgag200_pin_bo_at_0(const struct mga_device *mdev)
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{
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return mdev->flags & MGAG200_FLAG_HW_BUG_NO_STARTADD;
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}
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int mgag200_driver_dumb_create(struct drm_file *file,
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struct drm_device *dev,
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struct drm_mode_create_dumb *args)
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{
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struct mga_device *mdev = dev->dev_private;
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unsigned long pg_align;
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if (WARN_ONCE(!dev->vram_mm, "VRAM MM not initialized"))
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return -EINVAL;
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pg_align = 0ul;
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/*
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* Aligning scanout buffers to the size of the video ram forces
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* placement at offset 0. Works around a bug where HW does not
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* respect 'startadd' field.
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*/
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if (mgag200_pin_bo_at_0(mdev))
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pg_align = PFN_UP(mdev->mc.vram_size);
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return drm_gem_vram_fill_create_dumb(file, dev, &dev->vram_mm->bdev,
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pg_align, false, args);
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}
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static struct drm_driver driver = {
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.driver_features = DRIVER_GEM | DRIVER_MODESET,
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.load = mgag200_driver_load,
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.unload = mgag200_driver_unload,
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.fops = &mgag200_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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.debugfs_init = drm_vram_mm_debugfs_init,
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.dumb_create = mgag200_driver_dumb_create,
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.dumb_map_offset = drm_gem_vram_driver_dumb_mmap_offset,
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.gem_prime_mmap = drm_gem_prime_mmap,
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};
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static struct pci_driver mgag200_pci_driver = {
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.name = DRIVER_NAME,
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.id_table = pciidlist,
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.probe = mga_pci_probe,
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.remove = mga_pci_remove,
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};
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static int __init mgag200_init(void)
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{
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if (vgacon_text_force() && mgag200_modeset == -1)
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return -EINVAL;
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if (mgag200_modeset == 0)
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return -EINVAL;
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return pci_register_driver(&mgag200_pci_driver);
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}
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static void __exit mgag200_exit(void)
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{
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pci_unregister_driver(&mgag200_pci_driver);
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}
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module_init(mgag200_init);
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module_exit(mgag200_exit);
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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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