drivers/gpu/drm/nouveau/dispnv50/coreca7d.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/dispnv50/coreca7d.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/dispnv50/coreca7d.c
Extension
.c
Size
3846 bytes
Lines
123
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/pushc97b.h>

#include <nvhw/class/clca7d.h>

#include <nouveau_bo.h>

static int
coreca7d_update(struct nv50_core *core, u32 *interlock, bool ntfy)
{
	const u64 ntfy_addr = core->disp->sync->offset + NV50_DISP_CORE_NTFY;
	const u32 ntfy_hi = upper_32_bits(ntfy_addr);
	const u32 ntfy_lo = lower_32_bits(ntfy_addr);
	struct nvif_push *push = &core->chan.push;
	int ret;

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

	if (ntfy) {
		PUSH_MTHD(push, NVCA7D, SET_SURFACE_ADDRESS_HI_NOTIFIER, ntfy_hi,

					SET_SURFACE_ADDRESS_LO_NOTIFIER,
			  NVVAL(NVCA7D, SET_SURFACE_ADDRESS_LO_NOTIFIER, ADDRESS_LO, ntfy_lo >> 4) |
			  NVDEF(NVCA7D, SET_SURFACE_ADDRESS_LO_NOTIFIER, TARGET, PHYSICAL_NVM) |
			  NVDEF(NVCA7D, SET_SURFACE_ADDRESS_LO_NOTIFIER, ENABLE, ENABLE));

		PUSH_MTHD(push, NVCA7D, SET_NOTIFIER_CONTROL,
			  NVDEF(NVCA7D, SET_NOTIFIER_CONTROL, MODE, WRITE) |
			  NVDEF(NVCA7D, SET_NOTIFIER_CONTROL, NOTIFY, ENABLE));
	}

	PUSH_MTHD(push, NVCA7D, SET_INTERLOCK_FLAGS, interlock[NV50_DISP_INTERLOCK_CURS],
				SET_WINDOW_INTERLOCK_FLAGS, interlock[NV50_DISP_INTERLOCK_WNDW]);

	PUSH_MTHD(push, NVCA7D, UPDATE,
		  NVDEF(NVCA7D, UPDATE, RELEASE_ELV, TRUE) |
		  NVDEF(NVCA7D, UPDATE, SPECIAL_HANDLING, NONE) |
		  NVDEF(NVCA7D, UPDATE, INHIBIT_INTERRUPTS, FALSE));

	if (ntfy) {
		PUSH_MTHD(push, NVCA7D, SET_NOTIFIER_CONTROL,
			  NVDEF(NVCA7D, SET_NOTIFIER_CONTROL, NOTIFY, DISABLE));
	}

	return PUSH_KICK(push);
}

static int
coreca7d_init(struct nv50_core *core)
{
	struct nvif_push *push = &core->chan.push;
	const u32 windows = 8, heads = 4;
	int ret, i;

	ret = PUSH_WAIT(push, windows * 6 + heads * 6);
	if (ret)
		return ret;

	for (i = 0; i < windows; i++) {
		PUSH_MTHD(push, NVCA7D, WINDOW_SET_WINDOW_FORMAT_USAGE_BOUNDS(i),
			  NVDEF(NVCA7D, WINDOW_SET_WINDOW_FORMAT_USAGE_BOUNDS, RGB_PACKED1BPP, TRUE) |
			  NVDEF(NVCA7D, WINDOW_SET_WINDOW_FORMAT_USAGE_BOUNDS, RGB_PACKED2BPP, TRUE) |
			  NVDEF(NVCA7D, WINDOW_SET_WINDOW_FORMAT_USAGE_BOUNDS, RGB_PACKED4BPP, TRUE) |
			  NVDEF(NVCA7D, WINDOW_SET_WINDOW_FORMAT_USAGE_BOUNDS, RGB_PACKED8BPP, TRUE),

					WINDOW_SET_WINDOW_ROTATED_FORMAT_USAGE_BOUNDS(i), 0x00000000);

		PUSH_MTHD(push, NVCA7D, WINDOW_SET_WINDOW_USAGE_BOUNDS(i),
			  NVVAL(NVCA7D, WINDOW_SET_WINDOW_USAGE_BOUNDS, MAX_PIXELS_FETCHED_PER_LINE, 0x7fff) |
			  NVDEF(NVCA7D, WINDOW_SET_WINDOW_USAGE_BOUNDS, ILUT_ALLOWED, TRUE) |
			  NVDEF(NVCA7D, WINDOW_SET_WINDOW_USAGE_BOUNDS, INPUT_SCALER_TAPS, TAPS_2) |
			  NVDEF(NVCA7D, WINDOW_SET_WINDOW_USAGE_BOUNDS, UPSCALING_ALLOWED, FALSE),

					WINDOW_SET_PHYSICAL(i), BIT(i));
	}

	for (i = 0; i < heads; i++) {
		PUSH_MTHD(push, NVCA7D, HEAD_SET_HEAD_USAGE_BOUNDS(i),
			  NVDEF(NVCA7D, HEAD_SET_HEAD_USAGE_BOUNDS, CURSOR, USAGE_W256_H256) |
			  NVDEF(NVCA7D, HEAD_SET_HEAD_USAGE_BOUNDS, OLUT_ALLOWED, TRUE) |
			  NVDEF(NVCA7D, HEAD_SET_HEAD_USAGE_BOUNDS, OUTPUT_SCALER_TAPS, TAPS_2) |
			  NVDEF(NVCA7D, HEAD_SET_HEAD_USAGE_BOUNDS, UPSCALING_ALLOWED, TRUE));

		PUSH_MTHD(push, NVCA7D, HEAD_SET_TILE_MASK(i), BIT(i));

Annotation

Implementation Notes