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>
102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
/*
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* Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
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* Copyright 2001-2003 S3 Graphics, Inc. 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, sub license,
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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
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* next paragraph) shall be included in all copies or substantial portions
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* of the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
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* VIA, S3 GRAPHICS, 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 OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include "drmP.h"
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#include "via_drm.h"
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#include "via_drv.h"
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#include "drm_pciids.h"
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static int dri_library_name(struct drm_device *dev, char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "unichrome");
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}
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static struct pci_device_id pciidlist[] = {
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viadrv_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_HAVE_IRQ |
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DRIVER_IRQ_SHARED,
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.load = via_driver_load,
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.unload = via_driver_unload,
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.context_dtor = via_final_context,
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.get_vblank_counter = via_get_vblank_counter,
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.enable_vblank = via_enable_vblank,
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.disable_vblank = via_disable_vblank,
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.irq_preinstall = via_driver_irq_preinstall,
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.irq_postinstall = via_driver_irq_postinstall,
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.irq_uninstall = via_driver_irq_uninstall,
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.irq_handler = via_driver_irq_handler,
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.dma_quiescent = via_driver_dma_quiescent,
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.dri_library_name = dri_library_name,
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.reclaim_buffers = drm_core_reclaim_buffers,
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.reclaim_buffers_locked = NULL,
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.reclaim_buffers_idlelocked = via_reclaim_buffers_locked,
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.lastclose = via_lastclose,
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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 = via_ioctls,
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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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},
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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 via_init(void)
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{
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driver.num_ioctls = via_max_ioctl;
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via_init_command_verifier();
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return drm_init(&driver);
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}
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static void __exit via_exit(void)
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{
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drm_exit(&driver);
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}
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module_init(via_init);
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module_exit(via_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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