gf100.c

  1/*
  2 * Copyright 2012 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 * Authors: Ben Skeggs
 23 */
 24#include "gf100.h"
 25#include "ram.h"
 26
 27#include <core/memory.h>
 28#include <core/option.h>
 29#include <subdev/therm.h>
 30
 31void
 32gf100_fb_intr(struct nvkm_fb *base)
 33{
 34	struct gf100_fb *fb = gf100_fb(base);
 35	struct nvkm_subdev *subdev = &fb->base.subdev;
 36	struct nvkm_device *device = subdev->device;
 37	u32 intr = nvkm_rd32(device, 0x000100);
 38	if (intr & 0x08000000)
 39		nvkm_debug(subdev, "PFFB intr\n");
 40	if (intr & 0x00002000)
 41		nvkm_debug(subdev, "PBFB intr\n");
 42}
 43
 44int
 45gf100_fb_oneinit(struct nvkm_fb *base)
 46{
 47	struct gf100_fb *fb = gf100_fb(base);
 48	struct nvkm_device *device = fb->base.subdev.device;
 49	int ret, size = 1 << (fb->base.page ? fb->base.page : 17);
 50
 51	size = nvkm_longopt(device->cfgopt, "MmuDebugBufferSize", size);
 52	size = max(size, 0x1000);
 53
 54	ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000,
 55			      true, &fb->base.mmu_rd);
 56	if (ret)
 57		return ret;
 58
 59	ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000,
 60			      true, &fb->base.mmu_wr);
 61	if (ret)
 62		return ret;
 63
 64	return 0;
 65}
 66
 67int
 68gf100_fb_init_page(struct nvkm_fb *fb)
 69{
 70	struct nvkm_device *device = fb->subdev.device;
 71	switch (fb->page) {
 72	case 16: nvkm_mask(device, 0x100c80, 0x00000001, 0x00000001); break;
 73	case 17: nvkm_mask(device, 0x100c80, 0x00000001, 0x00000000); break;
 74	default:
 75		return -EINVAL;
 76	}
 77	return 0;
 78}
 79
 80void
 81gf100_fb_sysmem_flush_page_init(struct nvkm_fb *fb)
 82{
 83	// Ensure that the address can actually fit in the register
 84	WARN_ON(fb->sysmem.flush_page_addr > DMA_BIT_MASK(40));
 85
 86	nvkm_wr32(fb->subdev.device, 0x100c10, fb->sysmem.flush_page_addr >> 8);
 87}
 88
 89void
 90gf100_fb_init(struct nvkm_fb *base)
 91{
 92	struct gf100_fb *fb = gf100_fb(base);
 93	struct nvkm_device *device = fb->base.subdev.device;
 94
 95	if (base->func->clkgate_pack) {
 96		nvkm_therm_clkgate_init(device->therm,
 97					base->func->clkgate_pack);
 98	}
 99}
100
101void *
102gf100_fb_dtor(struct nvkm_fb *base)
103{
104	struct gf100_fb *fb = gf100_fb(base);
105
106	return fb;
107}
108
109int
110gf100_fb_new_(const struct nvkm_fb_func *func, struct nvkm_device *device,
111	      enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
112{
113	struct gf100_fb *fb;
114
115	if (!(fb = kzalloc(sizeof(*fb), GFP_KERNEL)))
116		return -ENOMEM;
117	nvkm_fb_ctor(func, device, type, inst, &fb->base);
118	*pfb = &fb->base;
119
120	return 0;
121}
122
123static const struct nvkm_fb_func
124gf100_fb = {
125	.dtor = gf100_fb_dtor,
126	.oneinit = gf100_fb_oneinit,
127	.init = gf100_fb_init,
128	.init_page = gf100_fb_init_page,
129	.intr = gf100_fb_intr,
130	.sysmem.flush_page_init = gf100_fb_sysmem_flush_page_init,
131	.ram_new = gf100_ram_new,
132	.default_bigpage = 17,
133};
134
135int
136gf100_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
137{
138	return gf100_fb_new_(&gf100_fb, device, type, inst, pfb);
139}