drivers/gpu/drm/nouveau/dispnv50/corec37d.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/dispnv50/corec37d.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/dispnv50/corec37d.c
Extension
.c
Size
5447 bytes
Lines
181
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

#include "core.h"
#include "head.h"

#include <nvif/class.h>
#include <nvif/pushc37b.h>
#include <nvif/timer.h>

#include <nvhw/class/clc37d.h>

#include <nouveau_bo.h>

int
corec37d_wndw_owner(struct nv50_core *core)
{
	struct nvif_push *push = &core->chan.push;
	const u32 windows = 8; /*XXX*/
	int ret, i;

	if ((ret = PUSH_WAIT(push, windows * 2)))
		return ret;

	for (i = 0; i < windows; i++) {
		PUSH_MTHD(push, NVC37D, WINDOW_SET_CONTROL(i),
			  NVDEF(NVC37D, WINDOW_SET_CONTROL, OWNER, HEAD(i >> 1)));
	}

	return 0;
}

int
corec37d_update(struct nv50_core *core, u32 *interlock, bool ntfy)
{
	struct nvif_push *push = &core->chan.push;
	int ret;

	if ((ret = PUSH_WAIT(push, (ntfy ? 2 * 2 : 0) + 5)))
		return ret;

	if (ntfy) {
		PUSH_MTHD(push, NVC37D, SET_NOTIFIER_CONTROL,
			  NVDEF(NVC37D, SET_NOTIFIER_CONTROL, MODE, WRITE) |
			  NVVAL(NVC37D, SET_NOTIFIER_CONTROL, OFFSET, NV50_DISP_CORE_NTFY >> 4) |
			  NVDEF(NVC37D, SET_NOTIFIER_CONTROL, NOTIFY, ENABLE));
	}

	PUSH_MTHD(push, NVC37D, SET_INTERLOCK_FLAGS, interlock[NV50_DISP_INTERLOCK_CURS],
				SET_WINDOW_INTERLOCK_FLAGS, interlock[NV50_DISP_INTERLOCK_WNDW]);
	PUSH_MTHD(push, NVC37D, UPDATE, 0x00000001 |
		  NVDEF(NVC37D, UPDATE, SPECIAL_HANDLING, NONE) |
		  NVDEF(NVC37D, UPDATE, INHIBIT_INTERRUPTS, FALSE));

	if (ntfy) {
		PUSH_MTHD(push, NVC37D, SET_NOTIFIER_CONTROL,
			  NVDEF(NVC37D, SET_NOTIFIER_CONTROL, NOTIFY, DISABLE));
	}

	return PUSH_KICK(push);
}

int
corec37d_ntfy_wait_done(struct nouveau_bo *bo, u32 offset,
			struct nvif_device *device)
{
	s64 time = nvif_msec(device, 2000ULL,
		if (NVBO_TD32(bo, offset, NV_DISP_NOTIFIER, _0, STATUS, ==, FINISHED))
			break;
		usleep_range(1, 2);
	);
	return time < 0 ? time : 0;
}

void
corec37d_ntfy_init(struct nouveau_bo *bo, u32 offset)
{
	NVBO_WR32(bo, offset, NV_DISP_NOTIFIER, _0,
			NVDEF(NV_DISP_NOTIFIER, _0, STATUS, NOT_BEGUN));
	NVBO_WR32(bo, offset, NV_DISP_NOTIFIER, _1, 0);
	NVBO_WR32(bo, offset, NV_DISP_NOTIFIER, _2, 0);
	NVBO_WR32(bo, offset, NV_DISP_NOTIFIER, _3, 0);
}

int corec37d_caps_init(struct nouveau_drm *drm, struct nv50_disp *disp)
{
	int ret;

	ret = nvif_object_ctor(&disp->disp->object, "dispCaps", 0,
			       disp->core->func->caps_class, NULL, 0, &disp->caps);
	if (ret) {
		NV_ERROR(drm,
			 "Failed to init notifier caps region: %d\n",

Annotation

Implementation Notes