diff options
Diffstat (limited to 'drivers/gpu/drm/mgag200/mgag200_drv.c')
| -rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_drv.c | 109 |
1 files changed, 94 insertions, 15 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.c b/drivers/gpu/drm/mgag200/mgag200_drv.c index aafa1cb31f50..7a5bad2f57d7 100644 --- a/drivers/gpu/drm/mgag200/mgag200_drv.c +++ b/drivers/gpu/drm/mgag200/mgag200_drv.c @@ -5,14 +5,18 @@ * Authors: Matthew Garrett * Dave Airlie */ -#include <linux/module.h> -#include <linux/console.h> -#include <drm/drmP.h> -#include "mgag200_drv.h" +#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 @@ -23,10 +27,15 @@ 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 }, + { 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 }, @@ -42,27 +51,94 @@ MODULE_DEVICE_TABLE(pci, pciidlist); static int mga_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { - drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, 0, "mgag200drmfb"); + 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; - return drm_get_pci_dev(pdev, ent, &driver); + 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_put_dev(dev); + drm_dev_unregister(dev); + mgag200_driver_unload(dev); + drm_dev_put(dev); } -static const struct file_operations mgag200_driver_fops = { - .owner = THIS_MODULE, - DRM_VRAM_MM_FILE_OPERATIONS -}; +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 = dev->dev_private; + 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, - .load = mgag200_driver_load, - .unload = mgag200_driver_unload, .fops = &mgag200_driver_fops, .name = DRIVER_NAME, .desc = DRIVER_DESC, @@ -70,7 +146,10 @@ static struct drm_driver driver = { .major = DRIVER_MAJOR, .minor = DRIVER_MINOR, .patchlevel = DRIVER_PATCHLEVEL, - DRM_GEM_VRAM_DRIVER + .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 = { |
