2 * Copyright 2012 Red Hat Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
22 #include <core/ramht.h>
23 #include <core/engine.h>
24 #include <core/object.h>
27 nvkm_ramht_hash(struct nvkm_ramht *ramht, int chid, u32 handle)
32 hash ^= (handle & ((1 << ramht->bits) - 1));
33 handle >>= ramht->bits;
36 hash ^= chid << (ramht->bits - 4);
41 nvkm_ramht_search(struct nvkm_ramht *ramht, int chid, u32 handle)
45 co = ho = nvkm_ramht_hash(ramht, chid, handle);
47 if (ramht->data[co].chid == chid) {
48 if (ramht->data[co].handle == handle)
49 return ramht->data[co].inst;
52 if (++co >= ramht->size)
60 nvkm_ramht_update(struct nvkm_ramht *ramht, int co, struct nvkm_object *object,
61 int chid, int addr, u32 handle, u32 context)
63 struct nvkm_ramht_data *data = &ramht->data[co];
64 u64 inst = 0x00000040; /* just non-zero for <=g8x fifo ramht */
67 nvkm_gpuobj_del(&data->inst);
69 data->handle = handle;
72 ret = nvkm_object_bind(object, ramht->parent, 16, &data->inst);
82 if (ramht->device->card_type >= NV_50)
83 inst = data->inst->node->offset;
85 inst = data->inst->addr;
88 if (addr < 0) context |= inst << -addr;
89 else context |= inst >> addr;
92 nvkm_kmap(ramht->gpuobj);
93 nvkm_wo32(ramht->gpuobj, (co << 3) + 0, handle);
94 nvkm_wo32(ramht->gpuobj, (co << 3) + 4, context);
95 nvkm_done(ramht->gpuobj);
100 nvkm_ramht_remove(struct nvkm_ramht *ramht, int cookie)
103 nvkm_ramht_update(ramht, cookie, NULL, -1, 0, 0, 0);
107 nvkm_ramht_insert(struct nvkm_ramht *ramht, struct nvkm_object *object,
108 int chid, int addr, u32 handle, u32 context)
112 if (nvkm_ramht_search(ramht, chid, handle))
115 co = ho = nvkm_ramht_hash(ramht, chid, handle);
117 if (ramht->data[co].chid < 0) {
118 return nvkm_ramht_update(ramht, co, object, chid,
119 addr, handle, context);
122 if (++co >= ramht->size)
130 nvkm_ramht_del(struct nvkm_ramht **pramht)
132 struct nvkm_ramht *ramht = *pramht;
134 nvkm_gpuobj_del(&ramht->gpuobj);
141 nvkm_ramht_new(struct nvkm_device *device, u32 size, u32 align,
142 struct nvkm_gpuobj *parent, struct nvkm_ramht **pramht)
144 struct nvkm_ramht *ramht;
147 if (!(ramht = *pramht = vzalloc(struct_size(ramht, data, (size >> 3)))))
150 ramht->device = device;
151 ramht->parent = parent;
152 ramht->size = size >> 3;
153 ramht->bits = order_base_2(ramht->size);
154 for (i = 0; i < ramht->size; i++)
155 ramht->data[i].chid = -1;
157 ret = nvkm_gpuobj_new(ramht->device, size, align, true,
158 ramht->parent, &ramht->gpuobj);
160 nvkm_ramht_del(pramht);