/*- *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 * 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 * */ /** @file drm_memory.c * Wrappers for kernel memory allocation routines, and MTRR management support. * * This file previously implemented a memory consumption tracking system using * the "area" argument for various different types of allocations, but that * has been stripped out for now. */ #include "drmP.h" MALLOC_DEFINE(M_DRM, "drm", "DRM Data Structures"); void drm_mem_init(void) { #if defined(__NetBSD__) || defined(__OpenBSD__) malloc_type_attach(M_DRM); #endif } void drm_mem_uninit(void) { } void *drm_alloc(size_t size, int area) { return malloc(size, M_DRM, M_NOWAIT); } void *drm_calloc(size_t nmemb, size_t size, int area) { return malloc(size * nmemb, M_DRM, M_NOWAIT | M_ZERO); } void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area) { void *pt; pt = malloc(size, M_DRM, M_NOWAIT); if (pt == NULL) return NULL; if (oldpt && oldsize) { memcpy(pt, oldpt, DRM_MIN(oldsize,size)); free(oldpt, M_DRM); } return pt; } void drm_free(void *pt, size_t size, int area) { free(pt, M_DRM); } void *drm_ioremap(struct drm_device *dev, drm_local_map_t *map) { #ifdef __FreeBSD__ return pmap_mapdev(map->offset, map->size); #elif defined(__NetBSD__) || defined(__OpenBSD__) map->bst = dev->pa.pa_memt; if (bus_space_map(map->bst, map->offset, map->size, BUS_SPACE_MAP_LINEAR, &map->bsh)) return NULL; return bus_space_vaddr(map->bst, map->bsh); #endif } void drm_ioremapfree(drm_local_map_t *map) { #ifdef __FreeBSD__ pmap_unmapdev((vm_offset_t) map->handle, map->size); #elif defined(__NetBSD__) || defined(__OpenBSD__) bus_space_unmap(map->bst, map->bsh, map->size); #endif } #ifdef __FreeBSD__ int drm_mtrr_add(unsigned long offset, size_t size, int flags) { int act; struct mem_range_desc mrdesc; mrdesc.mr_base = offset; mrdesc.mr_len = size; mrdesc.mr_flags = flags; act = MEMRANGE_SET_UPDATE; strlcpy(mrdesc.mr_owner, "drm", sizeof(mrdesc.mr_owner)); return mem_range_attr_set(&mrdesc, &act); } int drm_mtrr_del(int __unused handle, unsigned long offset, size_t size, int flags) { int act; struct mem_range_desc mrdesc; mrdesc.mr_base = offset; mrdesc.mr_len = size; mrdesc.mr_flags = flags; act = MEMRANGE_SET_REMOVE; strlcpy(mrdesc.mr_owner, "drm", sizeof(mrdesc.mr_owner)); return mem_range_attr_set(&mrdesc, &act); } #elif defined(__NetBSD__) || defined(__OpenBSD__) int drm_mtrr_add(unsigned long offset, size_t size, int flags) { struct mtrr mtrrmap; int one = 1; mtrrmap.base = offset; mtrrmap.len = size; mtrrmap.type = flags; mtrrmap.flags = MTRR_VALID; return mtrr_set(&mtrrmap, &one, NULL, MTRR_GETSET_KERNEL); } int drm_mtrr_del(unsigned long offset, size_t size, int flags) { struct mtrr mtrrmap; int one = 1; mtrrmap.base = offset; mtrrmap.len = size; mtrrmap.type = flags; mtrrmap.flags = 0; return mtrr_set(&mtrrmap, &one, NULL, MTRR_GETSET_KERNEL); } #endif ='#n35'>35 36 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 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 
/*
 * Copyright 2007 Nouveau Project
 *
 * 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 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 AUTHORS 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 <stdint.h>
#include <stdio.h>
#include <assert.h>
#include <errno.h>

#include "nouveau_drmif.h"
#include "nouveau_dma.h"

static inline uint32_t
READ_GET(struct nouveau_channel_priv *nvchan)
{
	return *nvchan->get;
}

static inline void
WRITE_PUT(struct nouveau_channel_priv *nvchan, uint32_t val)
{
	uint32_t put = ((val << 2) + nvchan->dma->base);
	volatile int dum;

	NOUVEAU_DMA_BARRIER;
	dum = READ_GET(nvchan);

	*nvchan->put = put;
	nvchan->dma->put = val;
#ifdef NOUVEAU_DMA_TRACE
	printf("WRITE_PUT %d/0x%08x\n", nvchan->drm.channel, put);
#endif

	NOUVEAU_DMA_BARRIER;
}

static inline int
LOCAL_GET(struct nouveau_dma_priv *dma, uint32_t *val)
{
	uint32_t get = *val;

	if (get >= dma->base && get <= (dma->base + (dma->max << 2))) {
		*val = (get - dma->base) >> 2;
		return 1;
	}

	return 0;
}

void
nouveau_dma_channel_init(struct nouveau_channel *chan)
{
	struct nouveau_channel_priv *nvchan = nouveau_channel(chan);
	int i;

	nvchan->dma = &nvchan->struct_dma;
	nvchan->dma->base = nvchan->drm.put_base;
	nvchan->dma->cur  = nvchan->dma->put = 0;
	nvchan->dma->max  = (nvchan->drm.cmdbuf_size >> 2) - 2;
	nvchan->dma->free = nvchan->dma->max - nvchan->dma->cur;

	RING_SPACE_CH(chan, RING_SKIPS);
	for (i = 0; i < RING_SKIPS; i++)
		OUT_RING_CH(chan, 0);
}

#define CHECK_TIMEOUT() do {                                                   \
	if ((NOUVEAU_TIME_MSEC() - t_start) > NOUVEAU_DMA_TIMEOUT)             \
		return - EBUSY;                                                \
} while(0)

int
nouveau_dma_wait(struct nouveau_channel *chan, unsigned size)
{
	struct nouveau_channel_priv *nvchan = nouveau_channel(chan);
	struct nouveau_dma_priv *dma = nvchan->dma;
	uint32_t get, t_start;

	FIRE_RING_CH(chan);

	t_start = NOUVEAU_TIME_MSEC();
	while (dma->free < size) {
		CHECK_TIMEOUT();

		get = READ_GET(nvchan);
		if (!LOCAL_GET(dma, &get))
			continue;

		if (dma->put >= get) {
			dma->free = dma->max - dma->cur;

			if (dma->free < size) {
#ifdef NOUVEAU_DMA_DEBUG
				dma->push_free = 1;
#endif
				OUT_RING_CH(chan, 0x20000000 | dma->base);
				if (get <= RING_SKIPS) {
					/*corner case - will be idle*/
					if (dma->put <= RING_SKIPS)
						WRITE_PUT(nvchan,
							  RING_SKIPS + 1);

					do {
						CHECK_TIMEOUT();
						get = READ_GET(nvchan);
						if (!LOCAL_GET(dma, &get))
							get = 0;
					} while (get <= RING_SKIPS);
				}

				WRITE_PUT(nvchan, RING_SKIPS);
				dma->cur  = dma->put = RING_SKIPS;
				dma->free = get - (RING_SKIPS + 1);
			}
		} else {
			dma->free = get - dma->cur - 1;
		}
	}

	return 0;
}

#ifdef NOUVEAU_DMA_DUMP_POSTRELOC_PUSHBUF
static void
nouveau_dma_parse_pushbuf(struct nouveau_channel *chan, int get, int put)
{
	struct nouveau_channel_priv *nvchan = nouveau_channel(chan);
	unsigned mthd_count = 0;
	
	while (get != put) {
		uint32_t gpuget = (get << 2) + nvchan->drm.put_base;
		uint32_t data;

		if (get < 0 || get >= nvchan->drm.cmdbuf_size)
			assert(0);
		data = nvchan->pushbuf[get++];

		if (mthd_count) {
			printf("0x%08x 0x%08x\n", gpuget, data);
			mthd_count--;
			continue;
		}

		switch (data & 0x60000000) {
		case 0x00000000:
			mthd_count = (data >> 18) & 0x7ff;
			printf("0x%08x 0x%08x MTHD "
			       "Sc %d Mthd 0x%04x Size %d\n",
			       gpuget, data, (data>>13) & 7, data & 0x1ffc,
			       mthd_count);
			break;
		case 0x20000000:
			get = (data & 0x1ffffffc) >> 2;
			printf("0x%08x 0x%08x JUMP 0x%08x\n",
			       gpuget, data, data & 0x1ffffffc);
			continue;
		case 0x40000000:
			mthd_count = (data >> 18) & 0x7ff;
			printf("0x%08x 0x%08x NINC "
			       "Sc %d Mthd 0x%04x Size %d\n",
			       gpuget, data, (data>>13) & 7, data & 0x1ffc,
			       mthd_count);
			break;
		case 0x60000000:
			/* DMA_OPCODE_CALL apparently, doesn't seem to work on
			 * my NV40 at least..
			 */
			/* fall-through */
		default:
			printf("DMA_PUSHER 0x%08x 0x%08x\n", gpuget, data);
			assert(0);
		}
	}
}
#endif

void
nouveau_dma_kickoff(struct nouveau_channel *chan)
{
	struct nouveau_channel_priv *nvchan = nouveau_channel(chan);
	struct nouveau_dma_priv *dma = nvchan->dma;

	if (dma->cur == dma->put)
		return;

#ifdef NOUVEAU_DMA_DEBUG
	if (dma->push_free) {
		printf("Packet incomplete: %d left\n", dma->push_free);
		return;
	}
#endif

#ifdef NOUVEAU_DMA_DUMP_POSTRELOC_PUSHBUF
	nouveau_dma_parse_pushbuf(chan, dma->put, dma->cur);
#endif

	WRITE_PUT(nvchan, dma->cur);
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-04 06:17:39 +0000