renesas/drm.git - libdrm, cloned from git://anongit.freedesktop.org/mesa/drm

Age	Commit message (Expand)	Author
2007-03-19	Remove old i830 kernel driver.	Alan Hourihane
2005-06-29	Remove the AGP requirement from Makefile and Kconfig for MGA. Remove the	Ian Romanick
2005-03-25	3dfx DRM depends on PCI	Dave Airlie
2004-10-09	fix up whitespacing in Kconfig	Dave Airlie
2004-10-05	Patch for Kconfig for making i830/i915 not build together	Dave Airlie
2004-08-29	Drop GAMMA DRM from a great height ...	Dave Airlie
2004-07-21	ATI Rage 128 and Radeon DRM unconditionally depend on PCI	Dave Airlie
2004-07-20	Kconfig update add i915 bring over some stuff from kernel	Dave Airlie
2004-04-12	Add mach64 to the trunk	Dave Airlie
2004-03-24	Modified linux/Kconfig to include the via drm driver.	Thomas Hellstrom
2003-09-28	Fix typo in SiS help message (and testing cvs commit to	Leif Delgass
2003-09-25	Fix Kconfig for SiS DRM now that it doesn't require sisfb.	Eric Anholt
2003-08-15	Merge from 2.6 kernel (Linus Torvalds)	Michel Daenzer
2003-04-22	Remove AGP dependency in kernel config for radeon, sis. Remove	Leif Delgass
2003-04-17	Add a Kconfig file as used in recent 2.5.x kernels.	David Dawes

/** * \file drm_dma.c * DMA IOCTL and function support * * \author Rickard E. (Rik) Faith <faith@valinux.com> * \author Gareth Hughes <gareth@valinux.com> */ /* * Created: Fri Mar 19 14:30:16 1999 by faith@valinux.com * * Copyright 1999, 2000 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. */ #include "drmP.h" /** * Initialize the DMA data. * * \param dev DRM device. * \return zero on success or a negative value on failure. * * Allocate and initialize a drm_device_dma structure. */ int drm_dma_setup(drm_device_t * dev) { int i; dev->dma = drm_alloc(sizeof(*dev->dma), DRM_MEM_DRIVER); if (!dev->dma) return -ENOMEM; memset(dev->dma, 0, sizeof(*dev->dma)); for (i = 0; i <= DRM_MAX_ORDER; i++) memset(&dev->dma->bufs[i], 0, sizeof(dev->dma->bufs[0])); return 0; } /** * Cleanup the DMA resources. * * \param dev DRM device. * * Free all pages associated with DMA buffers, the buffers and pages lists, and * finally the the drm_device::dma structure itself. */ void drm_dma_takedown(drm_device_t * dev) { drm_device_dma_t *dma = dev->dma; int i, j; if (!dma) return; /* Clear dma buffers */ for (i = 0; i <= DRM_MAX_ORDER; i++) { if (dma->bufs[i].seg_count) { DRM_DEBUG("order %d: buf_count = %d," " seg_count = %d\n", i, dma->bufs[i].buf_count, dma->bufs[i].seg_count); for (j = 0; j < dma->bufs[i].seg_count; j++) { if (dma->bufs[i].seglist[j]) { drm_pci_free(dev, dma->bufs[i].seglist[j]); } } drm_free(dma->bufs[i].seglist, dma->bufs[i].seg_count * sizeof(*dma->bufs[0].seglist), DRM_MEM_SEGS); } if (dma->bufs[i].buf_count) { for (j = 0; j < dma->bufs[i].buf_count; j++) { if (dma->bufs[i].buflist[j].dev_private) { drm_free(dma->bufs[i].buflist[j]. dev_private, dma->bufs[i].buflist[j]. dev_priv_size, DRM_MEM_BUFS); } } drm_free(dma->bufs[i].buflist, dma->bufs[i].buf_count * sizeof(*dma->bufs[0].buflist), DRM_MEM_BUFS); } } if (dma->buflist) { drm_free(dma->buflist, dma->buf_count * sizeof(*dma->buflist), DRM_MEM_BUFS); } if (dma->pagelist) { drm_free(dma->pagelist, dma->page_count * sizeof(*dma->pagelist), DRM_MEM_PAGES); } drm_free(dev->dma, sizeof(*dev->dma), DRM_MEM_DRIVER); dev->dma = NULL; } /** * Free a buffer. * * \param dev DRM device. * \param buf buffer to free. * * Resets the fields of \p buf. */ void drm_free_buffer(drm_device_t * dev, drm_buf_t * buf) { if (!buf) return; buf->waiting = 0; buf->pending = 0; buf->filp = NULL; buf->used = 0; if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && waitqueue_active(&buf->dma_wait)) { wake_up_interruptible(&buf->dma_wait); } } /** * Reclaim the buffers. * * \param filp file pointer. * * Frees each buffer associated with \p filp not already on the hardware. */ void drm_core_reclaim_buffers(drm_device_t *dev, struct file *filp) { drm_device_dma_t *dma = dev->dma; int i; if (!dma) return; for (i = 0; i < dma->buf_count; i++) { if (dma->buflist[i]->filp == filp) { switch (dma->buflist[i]->list) { case DRM_LIST_NONE: drm_free_buffer(dev, dma->buflist[i]); break; case DRM_LIST_WAIT: dma->buflist[i]->list = DRM_LIST_RECLAIM; break; default: /* Buffer already on hardware. */ break; } } } } EXPORT_SYMBOL(drm_core_reclaim_buffers);