/* drm_dma.c -- DMA IOCTL and function support -*- linux-c -*- * 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. * * Authors: * Rickard E. (Rik) Faith * Gareth Hughes * */ #include "drmP.h" int drm_dma_setup(drm_device_t *dev) { dev->dma = malloc(sizeof(*dev->dma), M_DRM, M_NOWAIT | M_ZERO); if (dev->dma == NULL) return DRM_ERR(ENOMEM); DRM_SPININIT(dev->dma_lock, "drmdma"); return 0; } void drm_dma_takedown(drm_device_t *dev) { drm_device_dma_t *dma = dev->dma; int i, j; if (dma == NULL) 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++) { drm_pci_free(dev, dma->bufs[i].seglist[j]); } free(dma->bufs[i].seglist, M_DRM); } if (dma->bufs[i].buf_count) { for (j = 0; j < dma->bufs[i].buf_count; j++) { free(dma->bufs[i].buflist[j].dev_private, M_DRM); } free(dma->bufs[i].buflist, M_DRM); } } free(dma->buflist, M_DRM); free(dma->pagelist, M_DRM); free(dev->dma, M_DRM); dev->dma = NULL; DRM_SPINUNINIT(dev->dma_lock); } void drm_free_buffer(drm_device_t *dev, drm_buf_t *buf) { if (!buf) return; buf->pending = 0; buf->filp = NULL; buf->used = 0; } void drm_reclaim_buffers(drm_device_t *dev, DRMFILE 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; } } } } /* Call into the driver-specific DMA handler */ int drm_dma(DRM_IOCTL_ARGS) { DRM_DEVICE; if (dev->driver.dma_ioctl) { return dev->driver.dma_ioctl(kdev, cmd, data, flags, p, filp); } else { DRM_DEBUG("DMA ioctl on driver with no dma handler\n"); return EINVAL; } } > 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77

/**************************************************************************
 *
 * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
 * 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, sub license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS 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.
 *
 **************************************************************************/


#ifndef INTERNAL_H_
#define INTERNAL_H_

#include "libkms.h"

struct kms_driver
{
	int (*get_prop)(struct kms_driver *kms, const unsigned key,
			unsigned *out);
	int (*destroy)(struct kms_driver *kms);

	int (*bo_create)(struct kms_driver *kms,
			 unsigned width,
			 unsigned height,
			 enum kms_bo_type type,
			 const unsigned *attr,
			 struct kms_bo **out);
	int (*bo_get_prop)(struct kms_bo *bo, const unsigned key,
			   unsigned *out);
	int (*bo_map)(struct kms_bo *bo, void **out);
	int (*bo_unmap)(struct kms_bo *bo);
	int (*bo_destroy)(struct kms_bo *bo);

	int fd;
};

struct kms_bo
{
	struct kms_driver *kms;
	void *ptr;
	size_t size;
	size_t offset;
	size_t pitch;
	unsigned handle;
};

int linux_create(int fd, struct kms_driver **out);

int vmwgfx_create(int fd, struct kms_driver **out);

int intel_create(int fd, struct kms_driver **out);

int dumb_create(int fd, struct kms_driver **out);