0a3e67a4ca
Previously, drivers supporting vblank interrupt waits would run the interrupt all the time, or all the time that any 3d client was running, preventing the CPU from sleeping for long when the system was otherwise idle. Now, interrupts are disabled any time that no client is waiting on a vblank event. The new method uses vblank counters on the chipsets when the interrupts are turned off, rather than counting interrupts, so that we can continue to present accurate vblank numbers. Co-author: Michel Dänzer <michel@tungstengraphics.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
143 lines
4.3 KiB
C
143 lines
4.3 KiB
C
/* mga_drv.c -- Matrox G200/G400 driver -*- linux-c -*-
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* Created: Mon Dec 13 01:56:22 1999 by jhartmann@precisioninsight.com
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*
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* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
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* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Rickard E. (Rik) Faith <faith@valinux.com>
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* Gareth Hughes <gareth@valinux.com>
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*/
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#include "drmP.h"
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#include "drm.h"
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#include "mga_drm.h"
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#include "mga_drv.h"
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#include "drm_pciids.h"
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static int mga_driver_device_is_agp(struct drm_device * dev);
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static struct pci_device_id pciidlist[] = {
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mga_PCI_IDS
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};
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static struct drm_driver driver = {
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.driver_features =
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DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA |
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DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED,
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.dev_priv_size = sizeof(drm_mga_buf_priv_t),
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.load = mga_driver_load,
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.unload = mga_driver_unload,
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.lastclose = mga_driver_lastclose,
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.dma_quiescent = mga_driver_dma_quiescent,
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.device_is_agp = mga_driver_device_is_agp,
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.get_vblank_counter = mga_get_vblank_counter,
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.enable_vblank = mga_enable_vblank,
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.disable_vblank = mga_disable_vblank,
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.irq_preinstall = mga_driver_irq_preinstall,
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.irq_postinstall = mga_driver_irq_postinstall,
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.irq_uninstall = mga_driver_irq_uninstall,
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.irq_handler = mga_driver_irq_handler,
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.reclaim_buffers = drm_core_reclaim_buffers,
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.get_map_ofs = drm_core_get_map_ofs,
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.get_reg_ofs = drm_core_get_reg_ofs,
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.ioctls = mga_ioctls,
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.dma_ioctl = mga_dma_buffers,
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.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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.ioctl = drm_ioctl,
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.mmap = drm_mmap,
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.poll = drm_poll,
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.fasync = drm_fasync,
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#ifdef CONFIG_COMPAT
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.compat_ioctl = mga_compat_ioctl,
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#endif
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},
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.pci_driver = {
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.name = DRIVER_NAME,
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.id_table = pciidlist,
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},
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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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};
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static int __init mga_init(void)
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{
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driver.num_ioctls = mga_max_ioctl;
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return drm_init(&driver);
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}
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static void __exit mga_exit(void)
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{
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drm_exit(&driver);
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}
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module_init(mga_init);
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module_exit(mga_exit);
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MODULE_AUTHOR(DRIVER_AUTHOR);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL and additional rights");
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/**
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* Determine if the device really is AGP or not.
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*
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* In addition to the usual tests performed by \c drm_device_is_agp, this
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* function detects PCI G450 cards that appear to the system exactly like
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* AGP G450 cards.
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*
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* \param dev The device to be tested.
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*
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* \returns
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* If the device is a PCI G450, zero is returned. Otherwise 2 is returned.
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*/
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static int mga_driver_device_is_agp(struct drm_device * dev)
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{
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const struct pci_dev *const pdev = dev->pdev;
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/* There are PCI versions of the G450. These cards have the
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* same PCI ID as the AGP G450, but have an additional PCI-to-PCI
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* bridge chip. We detect these cards, which are not currently
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* supported by this driver, by looking at the device ID of the
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* bus the "card" is on. If vendor is 0x3388 (Hint Corp) and the
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* device is 0x0021 (HB6 Universal PCI-PCI bridge), we reject the
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* device.
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*/
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if ((pdev->device == 0x0525) && pdev->bus->self
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&& (pdev->bus->self->vendor == 0x3388)
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&& (pdev->bus->self->device == 0x0021)) {
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return 0;
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}
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return 2;
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}
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