/* lists.c -- Buffer list handling routines -*- linux-c -*- * Created: Mon Apr 19 20:54:22 1999 by faith@precisioninsight.com * * Copyright 1999 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 * PRECISION INSIGHT 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 * */ #define __NO_VERSION__ #include "drmP.h" int drm_waitlist_create(drm_waitlist_t *bl, int count) { if (bl->count) return -EINVAL; bl->count = count; bl->bufs = drm_alloc((bl->count + 2) * sizeof(*bl->bufs), DRM_MEM_BUFLISTS); bl->rp = bl->bufs; bl->wp = bl->bufs; bl->end = &bl->bufs[bl->count+1]; bl->write_lock = SPIN_LOCK_UNLOCKED; bl->read_lock = SPIN_LOCK_UNLOCKED; return 0; } int drm_waitlist_destroy(drm_waitlist_t *bl) { if (bl->rp != bl->wp) return -EINVAL; if (bl->bufs) drm_free(bl->bufs, (bl->count + 2) * sizeof(*bl->bufs), DRM_MEM_BUFLISTS); bl->count = 0; bl->bufs = NULL; bl->rp = NULL; bl->wp = NULL; bl->end = NULL; return 0; } int drm_waitlist_put(drm_waitlist_t *bl, drm_buf_t *buf) { int left; unsigned long flags; left = DRM_LEFTCOUNT(bl); if (!left) { DRM_ERROR("Overflow while adding buffer %d from pid %d\n", buf->idx, buf->pid); return -EINVAL; } #if DRM_DMA_HISTOGRAM buf->time_queued = get_cycles(); #endif buf->list = DRM_LIST_WAIT; spin_lock_irqsave(&bl->write_lock, flags); *bl->wp = buf; if (++bl->wp >= bl->end) bl->wp = bl->bufs; spin_unlock_irqrestore(&bl->write_lock, flags); return 0; } drm_buf_t *drm_waitlist_get(drm_waitlist_t *bl) { drm_buf_t *buf; unsigned long flags; spin_lock_irqsave(&bl->read_lock, flags); buf = *bl->rp; if (bl->rp == bl->wp) { spin_unlock_irqrestore(&bl->read_lock, flags); return NULL; } if (++bl->rp >= bl->end) bl->rp = bl->bufs; spin_unlock_irqrestore(&bl->read_lock, flags); return buf; } int drm_freelist_create(drm_freelist_t *bl, int count) { atomic_set(&bl->count, 0); bl->next = NULL; init_waitqueue_head(&bl->waiting); bl->low_mark = 0; bl->high_mark = 0; atomic_set(&bl->wfh, 0); bl->lock = SPIN_LOCK_UNLOCKED; ++bl->initialized; return 0; } int drm_freelist_destroy(drm_freelist_t *bl) { atomic_set(&bl->count, 0); bl->next = NULL; return 0; } int drm_freelist_put(drm_device_t *dev, drm_freelist_t *bl, drm_buf_t *buf) { drm_device_dma_t *dma = dev->dma; if (!dma) { DRM_ERROR("No DMA support\n"); return 1; } if (buf->waiting || buf->pending || buf->list == DRM_LIST_FREE) { DRM_ERROR("Freed buffer %d: w%d, p%d, l%d\n", buf->idx, buf->waiting, buf->pending, buf->list); } if (!bl) return 1; #if DRM_DMA_HISTOGRAM buf->time_freed = get_cycles(); drm_histogram_compute(dev, buf); #endif buf->list = DRM_LIST_FREE; spin_lock(&bl->lock); buf->next = bl->next; bl->next = buf; spin_unlock(&bl->lock); atomic_inc(&bl->count); if (atomic_read(&bl->count) > dma->buf_count) { DRM_ERROR("%d of %d buffers free after addition of %d\n", atomic_read(&bl->count), dma->buf_count, buf->idx); return 1; } /* Check for high water mark */ if (atomic_read(&bl->wfh) && atomic_read(&bl->count)>=bl->high_mark) { atomic_set(&bl->wfh, 0); wake_up_interruptible(&bl->waiting); } return 0; } static drm_buf_t *drm_freelist_try(drm_freelist_t *bl) { drm_buf_t *buf; if (!bl) return NULL; /* Get buffer */ spin_lock(&bl->lock); if (!bl->next) { spin_unlock(&bl->lock); return NULL; } buf = bl->next; bl->next = bl->next->next; spin_unlock(&bl->lock); atomic_dec(&bl->count); buf->next = NULL; buf->list = DRM_LIST_NONE; if (buf->waiting || buf->pending) { DRM_ERROR("Free buffer %d: w%d, p%d, l%d\n", buf->idx, buf->waiting, buf->pending, buf->list); } return buf; } drm_buf_t *drm_freelist_get(drm_freelist_t *bl, int block) { drm_buf_t *buf = NULL; DECLARE_WAITQUEUE(entry, current); if (!bl || !bl->initialized) return NULL; /* Check for low water mark */ if (atomic_read(&bl->count) <= bl->low_mark) /* Became low */ atomic_set(&bl->wfh, 1); if (atomic_read(&bl->wfh)) { if (block) { add_wait_queue(&bl->waiting, &entry); for (;;) { current->state = TASK_INTERRUPTIBLE; if (!atomic_read(&bl->wfh) && (buf = drm_freelist_try(bl))) break; schedule(); if (signal_pending(current)) break; } current->state = TASK_RUNNING; remove_wait_queue(&bl->waiting, &entry); } return buf; } return drm_freelist_try(bl); } a id='n92' href='#n92'>92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 
/**************************************************************************
 *
 * Copyright (c) 2007 Tungsten Graphics, Inc., Cedar Park, TX., 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.
 *
 **************************************************************************/
/*
 * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
 */

#include "drmP.h"
#include "via_drm.h"
#include "via_drv.h"

struct drm_ttm_backend *via_create_ttm_backend_entry(struct drm_device * dev)
{
	return drm_agp_init_ttm(dev);
}

int via_fence_types(struct drm_buffer_object *bo, uint32_t * fclass,
		    uint32_t * type)
{
	*type = 3;
	return 0;
}

int via_invalidate_caches(struct drm_device * dev, uint64_t flags)
{
	/*
	 * FIXME: Invalidate texture caches here.
	 */

	return 0;
}


static int via_vram_info(struct drm_device *dev,
			 unsigned long *offset,
			 unsigned long *size)
{
	struct pci_dev *pdev = dev->pdev;
	unsigned long flags;

	int ret = -EINVAL;
	int i;
	for (i=0; i<6; ++i) {
		flags = pci_resource_flags(pdev, i);
		if ((flags & (IORESOURCE_MEM | IORESOURCE_PREFETCH)) ==
		    (IORESOURCE_MEM | IORESOURCE_PREFETCH)) {
			ret = 0;
			break;
		}
	}

	if (ret) {
		DRM_ERROR("Could not find VRAM PCI resource\n");
		return ret;
	}

	*offset = pci_resource_start(pdev, i);
	*size = pci_resource_end(pdev, i) - *offset + 1;
	return 0;
}

int via_init_mem_type(struct drm_device * dev, uint32_t type,
		       struct drm_mem_type_manager * man)
{
	switch (type) {
	case DRM_BO_MEM_LOCAL:
		/* System memory */

		man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE |
			_DRM_FLAG_MEMTYPE_CACHED;
		man->drm_bus_maptype = 0;
		break;

	case DRM_BO_MEM_TT:
		/* Dynamic agpgart memory */

		if (!(drm_core_has_AGP(dev) && dev->agp)) {
			DRM_ERROR("AGP is not enabled for memory type %u\n",
				  (unsigned)type);
			return -EINVAL;
		}
		man->io_offset = dev->agp->agp_info.aper_base;
		man->io_size = dev->agp->agp_info.aper_size * 1024 * 1024;
		man->io_addr = NULL;
		man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE | _DRM_FLAG_NEEDS_IOREMAP;

		/* Only to get pte protection right. */

		man->drm_bus_maptype = _DRM_AGP;
		break;

	case DRM_BO_MEM_VRAM:
		/* "On-card" video ram */

		man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE | _DRM_FLAG_NEEDS_IOREMAP;
		man->drm_bus_maptype = _DRM_FRAME_BUFFER;
		man->io_addr = NULL;
		return via_vram_info(dev, &man->io_offset, &man->io_size);
		break;

	case DRM_BO_MEM_PRIV0:
		/* Pre-bound agpgart memory */

		if (!(drm_core_has_AGP(dev) && dev->agp)) {
			DRM_ERROR("AGP is not enabled for memory type %u\n",
				  (unsigned)type);
			return -EINVAL;
		}
		man->io_offset = dev->agp->agp_info.aper_base;
		man->io_size = dev->agp->agp_info.aper_size * 1024 * 1024;
		man->io_addr = NULL;
		man->flags =  _DRM_FLAG_MEMTYPE_MAPPABLE |
		    _DRM_FLAG_MEMTYPE_FIXED | _DRM_FLAG_NEEDS_IOREMAP;
		man->drm_bus_maptype = _DRM_AGP;
		break;

	default:
		DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
		return -EINVAL;
	}
	return 0;
}

uint64_t via_evict_flags(struct drm_buffer_object *bo)
{
	switch (bo->mem.mem_type) {
	case DRM_BO_MEM_LOCAL:
	case DRM_BO_MEM_TT:
		return DRM_BO_FLAG_MEM_LOCAL; /* Evict TT to local */
	case DRM_BO_MEM_PRIV0: /* Evict pre-bound AGP to TT */
		return DRM_BO_MEM_TT;
	case DRM_BO_MEM_VRAM:
		if (bo->mem.num_pages > 128)
			return DRM_BO_MEM_TT;
		else
			return DRM_BO_MEM_LOCAL;
	default:
		return DRM_BO_MEM_LOCAL;
	}
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-07 13:32:05 +0000