usergv100.c

  1/*
  2 * Copyright 2018 Red Hat Inc.
  3 *
  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:
 10 *
 11 * The above copyright notice and this permission notice shall be included in
 12 * all copies or substantial portions of the Software.
 13 *
 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.
 21 */
 22#define gv100_dmaobj(p) container_of((p), struct gv100_dmaobj, base)
 23#include "user.h"
 24
 25#include <core/client.h>
 26#include <core/gpuobj.h>
 27#include <subdev/fb.h>
 28
 29#include <nvif/cl0002.h>
 30#include <nvif/unpack.h>
 31
 32struct gv100_dmaobj {
 33	struct nvkm_dmaobj base;
 34	u32 flags0;
 35};
 36
 37static int
 38gv100_dmaobj_bind(struct nvkm_dmaobj *base, struct nvkm_gpuobj *parent,
 39		  int align, struct nvkm_gpuobj **pgpuobj)
 40{
 41	struct gv100_dmaobj *dmaobj = gv100_dmaobj(base);
 42	struct nvkm_device *device = dmaobj->base.dma->engine.subdev.device;
 43	u64 start = dmaobj->base.start >> 8;
 44	u64 limit = dmaobj->base.limit >> 8;
 45	int ret;
 46
 47	ret = nvkm_gpuobj_new(device, 24, align, false, parent, pgpuobj);
 48	if (ret == 0) {
 49		nvkm_kmap(*pgpuobj);
 50		nvkm_wo32(*pgpuobj, 0x00, dmaobj->flags0);
 51		nvkm_wo32(*pgpuobj, 0x04, lower_32_bits(start));
 52		nvkm_wo32(*pgpuobj, 0x08, upper_32_bits(start));
 53		nvkm_wo32(*pgpuobj, 0x0c, lower_32_bits(limit));
 54		nvkm_wo32(*pgpuobj, 0x10, upper_32_bits(limit));
 55		nvkm_done(*pgpuobj);
 56	}
 57
 58	return ret;
 59}
 60
 61static const struct nvkm_dmaobj_func
 62gv100_dmaobj_func = {
 63	.bind = gv100_dmaobj_bind,
 64};
 65
 66int
 67gv100_dmaobj_new(struct nvkm_dma *dma, const struct nvkm_oclass *oclass,
 68		 void *data, u32 size, struct nvkm_dmaobj **pdmaobj)
 69{
 70	union {
 71		struct gf119_dma_v0 v0;
 72	} *args;
 73	struct nvkm_object *parent = oclass->parent;
 74	struct gv100_dmaobj *dmaobj;
 75	u32 kind, page;
 76	int ret;
 77
 78	if (!(dmaobj = kzalloc(sizeof(*dmaobj), GFP_KERNEL)))
 79		return -ENOMEM;
 80	*pdmaobj = &dmaobj->base;
 81
 82	ret = nvkm_dmaobj_ctor(&gv100_dmaobj_func, dma, oclass,
 83			       &data, &size, &dmaobj->base);
 84	if (ret)
 85		return ret;
 86
 87	ret  = -ENOSYS;
 88	args = data;
 89
 90	nvif_ioctl(parent, "create gv100 dma size %d\n", size);
 91	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
 92		nvif_ioctl(parent,
 93			   "create gv100 dma vers %d page %d kind %02x\n",
 94			   args->v0.version, args->v0.page, args->v0.kind);
 95		kind = args->v0.kind != 0;
 96		page = args->v0.page != 0;
 97	} else
 98	if (size == 0) {
 99		kind = 0;
100		page = GF119_DMA_V0_PAGE_SP;
101	} else
102		return ret;
103
104	if (kind)
105		dmaobj->flags0 |= 0x00100000;
106	if (page)
107		dmaobj->flags0 |= 0x00000040;
108	dmaobj->flags0 |= 0x00000004; /* rw */
109
110	switch (dmaobj->base.target) {
111	case NV_MEM_TARGET_VRAM       : dmaobj->flags0 |= 0x00000001; break;
112	case NV_MEM_TARGET_PCI        : dmaobj->flags0 |= 0x00000002; break;
113	case NV_MEM_TARGET_PCI_NOSNOOP: dmaobj->flags0 |= 0x00000003; break;
114	default:
115		return -EINVAL;
116	}
117
118	return 0;
119}