9fb0767374
- S3 Savage driver ported. - Added support for ATI_fragment_shader registers for r200. - Improved r300 support, needed for latest r300 DRI driver. - (possibly) r300 PCIE support, needs X.Org server from CVS. - Added support for PCI Matrox cards. - Software fallbacks fixed for Rage 128, which used to render badly or hang. - Some issues reported by WITNESS are fixed. - i915 module Makefile added, as the driver may now be working, but is untested. - Added scripts for copying and preprocessing DRM CVS for inclusion in the kernel. Thanks to Daniel Stone for getting me started on that.
145 lines
3.9 KiB
C
145 lines
3.9 KiB
C
/**
|
|
* \file drm_pci.h
|
|
* \brief PCI consistent, DMA-accessible memory functions.
|
|
*
|
|
* \author Eric Anholt <anholt@FreeBSD.org>
|
|
*/
|
|
|
|
/*-
|
|
* Copyright 2003 Eric Anholt.
|
|
* 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 THE
|
|
* AUTHOR 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 <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "dev/drm/drmP.h"
|
|
|
|
/**********************************************************************/
|
|
/** \name PCI memory */
|
|
/*@{*/
|
|
|
|
#if defined(__FreeBSD__)
|
|
static void
|
|
drm_pci_busdma_callback(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
|
|
{
|
|
drm_dma_handle_t *dmah = arg;
|
|
|
|
if (error != 0)
|
|
return;
|
|
|
|
KASSERT(nsegs == 1, ("drm_pci_busdma_callback: bad dma segment count"));
|
|
dmah->busaddr = segs[0].ds_addr;
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* \brief Allocate a physically contiguous DMA-accessible consistent
|
|
* memory block.
|
|
*/
|
|
drm_dma_handle_t *
|
|
drm_pci_alloc(drm_device_t *dev, size_t size, size_t align, dma_addr_t maxaddr)
|
|
{
|
|
drm_dma_handle_t *dmah;
|
|
int ret;
|
|
|
|
/* Need power-of-two alignment, so fail the allocation if it isn't. */
|
|
if ((align & (align - 1)) != 0) {
|
|
DRM_ERROR("drm_pci_alloc with non-power-of-two alignment %d\n",
|
|
(int)align);
|
|
return NULL;
|
|
}
|
|
|
|
dmah = malloc(sizeof(drm_dma_handle_t), M_DRM, M_ZERO | M_NOWAIT);
|
|
if (dmah == NULL)
|
|
return NULL;
|
|
|
|
#ifdef __FreeBSD__
|
|
ret = bus_dma_tag_create(NULL, align, 0, /* tag, align, boundary */
|
|
maxaddr, BUS_SPACE_MAXADDR, /* lowaddr, highaddr */
|
|
NULL, NULL, /* filtfunc, filtfuncargs */
|
|
size, 1, size, /* maxsize, nsegs, maxsegsize */
|
|
BUS_DMA_ALLOCNOW, NULL, NULL, /* flags, lockfunc, lockfuncargs */
|
|
&dmah->tag);
|
|
if (ret != 0) {
|
|
free(dmah, M_DRM);
|
|
return NULL;
|
|
}
|
|
|
|
ret = bus_dmamem_alloc(dmah->tag, &dmah->vaddr, BUS_DMA_NOWAIT,
|
|
&dmah->map);
|
|
if (ret != 0) {
|
|
bus_dma_tag_destroy(dmah->tag);
|
|
free(dmah, M_DRM);
|
|
return NULL;
|
|
}
|
|
|
|
ret = bus_dmamap_load(dmah->tag, dmah->map, dmah->vaddr, size,
|
|
drm_pci_busdma_callback, dmah, 0);
|
|
if (ret != 0) {
|
|
bus_dmamem_free(dmah->tag, dmah->vaddr, dmah->map);
|
|
bus_dma_tag_destroy(dmah->tag);
|
|
free(dmah, M_DRM);
|
|
return NULL;
|
|
}
|
|
#elif defined(__NetBSD__)
|
|
ret = bus_dmamem_alloc(dev->dma_tag, size, align, PAGE_SIZE,
|
|
&dmah->seg, 1, &nsegs, BUS_DMA_NOWAIT);
|
|
if ((ret != 0) || (nsegs != 1)) {
|
|
free(dmah, M_DRM);
|
|
return NULL;
|
|
}
|
|
|
|
ret = bus_dmamem_map(dev->dma_tag, &dmah->seg, 1, size, &dmah->addr,
|
|
BUS_DMA_NOWAIT);
|
|
if (ret != 0) {
|
|
bus_dmamem_free(dev->dma_tag, &dmah->seg, 1);
|
|
free(dmah, M_DRM);
|
|
return NULL;
|
|
}
|
|
|
|
dmah->dmaaddr = h->seg.ds_addr;
|
|
#endif
|
|
|
|
return dmah;
|
|
}
|
|
|
|
/**
|
|
* \brief Free a DMA-accessible consistent memory block.
|
|
*/
|
|
void
|
|
drm_pci_free(drm_device_t *dev, drm_dma_handle_t *dmah)
|
|
{
|
|
if (dmah == NULL)
|
|
return;
|
|
|
|
#if defined(__FreeBSD__)
|
|
bus_dmamem_free(dmah->tag, dmah->vaddr, dmah->map);
|
|
bus_dma_tag_destroy(dmah->tag);
|
|
#elif defined(__NetBSD__)
|
|
bus_dmamem_free(dev->dma_tag, &dmah->seg, 1);
|
|
#endif
|
|
|
|
free(dmah, M_DRM);
|
|
}
|
|
|
|
/*@}*/
|