drivers/gpu/drm/nouveau/nvkm/engine/gr/nv2a.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv2a.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/engine/gr/nv2a.c
Extension
.c
Size
4313 bytes
Lines
127
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: MIT
#include "nv20.h"
#include "regs.h"

#include <core/gpuobj.h>
#include <engine/fifo.h>
#include <engine/fifo/chan.h>

/*******************************************************************************
 * PGRAPH context
 ******************************************************************************/

static const struct nvkm_object_func
nv2a_gr_chan = {
	.dtor = nv20_gr_chan_dtor,
	.init = nv20_gr_chan_init,
	.fini = nv20_gr_chan_fini,
};

static int
nv2a_gr_chan_new(struct nvkm_gr *base, struct nvkm_chan *fifoch,
		 const struct nvkm_oclass *oclass, struct nvkm_object **pobject)
{
	struct nv20_gr *gr = nv20_gr(base);
	struct nv20_gr_chan *chan;
	int ret, i;

	if (!(chan = kzalloc_obj(*chan)))
		return -ENOMEM;
	nvkm_object_ctor(&nv2a_gr_chan, oclass, &chan->object);
	chan->gr = gr;
	chan->chid = fifoch->id;
	*pobject = &chan->object;

	ret = nvkm_memory_new(gr->base.engine.subdev.device,
			      NVKM_MEM_TARGET_INST, 0x36b0, 16, true,
			      &chan->inst);
	if (ret)
		return ret;

	nvkm_kmap(chan->inst);
	nvkm_wo32(chan->inst, 0x0000, 0x00000001 | (chan->chid << 24));
	nvkm_wo32(chan->inst, 0x033c, 0xffff0000);
	nvkm_wo32(chan->inst, 0x03a0, 0x0fff0000);
	nvkm_wo32(chan->inst, 0x03a4, 0x0fff0000);
	nvkm_wo32(chan->inst, 0x047c, 0x00000101);
	nvkm_wo32(chan->inst, 0x0490, 0x00000111);
	nvkm_wo32(chan->inst, 0x04a8, 0x44400000);
	for (i = 0x04d4; i <= 0x04e0; i += 4)
		nvkm_wo32(chan->inst, i, 0x00030303);
	for (i = 0x04f4; i <= 0x0500; i += 4)
		nvkm_wo32(chan->inst, i, 0x00080000);
	for (i = 0x050c; i <= 0x0518; i += 4)
		nvkm_wo32(chan->inst, i, 0x01012000);
	for (i = 0x051c; i <= 0x0528; i += 4)
		nvkm_wo32(chan->inst, i, 0x000105b8);
	for (i = 0x052c; i <= 0x0538; i += 4)
		nvkm_wo32(chan->inst, i, 0x00080008);
	for (i = 0x055c; i <= 0x0598; i += 4)
		nvkm_wo32(chan->inst, i, 0x07ff0000);
	nvkm_wo32(chan->inst, 0x05a4, 0x4b7fffff);
	nvkm_wo32(chan->inst, 0x05fc, 0x00000001);
	nvkm_wo32(chan->inst, 0x0604, 0x00004000);
	nvkm_wo32(chan->inst, 0x0610, 0x00000001);
	nvkm_wo32(chan->inst, 0x0618, 0x00040000);
	nvkm_wo32(chan->inst, 0x061c, 0x00010000);
	for (i = 0x1a9c; i <= 0x22fc; i += 16) { /*XXX: check!! */
		nvkm_wo32(chan->inst, (i + 0), 0x10700ff9);
		nvkm_wo32(chan->inst, (i + 4), 0x0436086c);
		nvkm_wo32(chan->inst, (i + 8), 0x000c001b);
	}
	nvkm_wo32(chan->inst, 0x269c, 0x3f800000);
	nvkm_wo32(chan->inst, 0x26b0, 0x3f800000);
	nvkm_wo32(chan->inst, 0x26dc, 0x40000000);
	nvkm_wo32(chan->inst, 0x26e0, 0x3f800000);
	nvkm_wo32(chan->inst, 0x26e4, 0x3f000000);
	nvkm_wo32(chan->inst, 0x26ec, 0x40000000);
	nvkm_wo32(chan->inst, 0x26f0, 0x3f800000);
	nvkm_wo32(chan->inst, 0x26f8, 0xbf800000);
	nvkm_wo32(chan->inst, 0x2700, 0xbf800000);
	nvkm_wo32(chan->inst, 0x3024, 0x000fe000);
	nvkm_wo32(chan->inst, 0x30a0, 0x000003f8);
	nvkm_wo32(chan->inst, 0x33fc, 0x002fe000);
	for (i = 0x341c; i <= 0x3438; i += 4)
		nvkm_wo32(chan->inst, i, 0x001c527c);
	nvkm_done(chan->inst);
	return 0;
}

/*******************************************************************************

Annotation

Implementation Notes