diff options
Diffstat (limited to 'drivers/gpu/drm/mga/mga_drv.c')
| -rw-r--r-- | drivers/gpu/drm/mga/mga_drv.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mga/mga_drv.c b/drivers/gpu/drm/mga/mga_drv.c new file mode 100644 index 0000000..97ee566 --- /dev/null +++ b/drivers/gpu/drm/mga/mga_drv.c @@ -0,0 +1,142 @@ +/* mga_drv.c -- Matrox G200/G400 driver -*- linux-c -*- + * Created: Mon Dec 13 01:56:22 1999 by jhartmann@precisioninsight.com + * + * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. + * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: + * Rickard E. (Rik) Faith <faith@valinux.com> + * Gareth Hughes <gareth@valinux.com> + */ + +#include "drmP.h" +#include "drm.h" +#include "mga_drm.h" +#include "mga_drv.h" + +#include "drm_pciids.h" + +static int mga_driver_device_is_agp(struct drm_device * dev); + +static struct pci_device_id pciidlist[] = { + mga_PCI_IDS +}; + +static struct drm_driver driver = { + .driver_features = + DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | + DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED, + .dev_priv_size = sizeof(drm_mga_buf_priv_t), + .load = mga_driver_load, + .unload = mga_driver_unload, + .lastclose = mga_driver_lastclose, + .dma_quiescent = mga_driver_dma_quiescent, + .device_is_agp = mga_driver_device_is_agp, + .get_vblank_counter = mga_get_vblank_counter, + .enable_vblank = mga_enable_vblank, + .disable_vblank = mga_disable_vblank, + .irq_preinstall = mga_driver_irq_preinstall, + .irq_postinstall = mga_driver_irq_postinstall, + .irq_uninstall = mga_driver_irq_uninstall, + .irq_handler = mga_driver_irq_handler, + .reclaim_buffers = drm_core_reclaim_buffers, + .get_map_ofs = drm_core_get_map_ofs, + .get_reg_ofs = drm_core_get_reg_ofs, + .ioctls = mga_ioctls, + .dma_ioctl = mga_dma_buffers, + .fops = { + .owner = THIS_MODULE, + .open = drm_open, + .release = drm_release, + .ioctl = drm_ioctl, + .mmap = drm_mmap, + .poll = drm_poll, + .fasync = drm_fasync, +#ifdef CONFIG_COMPAT + .compat_ioctl = mga_compat_ioctl, +#endif + }, + .pci_driver = { + .name = DRIVER_NAME, + .id_table = pciidlist, + }, + + .name = DRIVER_NAME, + .desc = DRIVER_DESC, + .date = DRIVER_DATE, + .major = DRIVER_MAJOR, + .minor = DRIVER_MINOR, + .patchlevel = DRIVER_PATCHLEVEL, +}; + +static int __init mga_init(void) +{ + driver.num_ioctls = mga_max_ioctl; + return drm_init(&driver); +} + +static void __exit mga_exit(void) +{ + drm_exit(&driver); +} + +module_init(mga_init); +module_exit(mga_exit); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL and additional rights"); + +/** + * Determine if the device really is AGP or not. + * + * In addition to the usual tests performed by \c drm_device_is_agp, this + * function detects PCI G450 cards that appear to the system exactly like + * AGP G450 cards. + * + * \param dev The device to be tested. + * + * \returns + * If the device is a PCI G450, zero is returned. Otherwise 2 is returned. + */ +static int mga_driver_device_is_agp(struct drm_device * dev) +{ + const struct pci_dev *const pdev = dev->pdev; + + /* There are PCI versions of the G450. These cards have the + * same PCI ID as the AGP G450, but have an additional PCI-to-PCI + * bridge chip. We detect these cards, which are not currently + * supported by this driver, by looking at the device ID of the + * bus the "card" is on. If vendor is 0x3388 (Hint Corp) and the + * device is 0x0021 (HB6 Universal PCI-PCI bridge), we reject the + * device. + */ + + if ((pdev->device == 0x0525) && pdev->bus->self + && (pdev->bus->self->vendor == 0x3388) + && (pdev->bus->self->device == 0x0021)) { + return 0; + } + + return 2; +} |
