drivers/gpu/drm/radeon/cik.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/radeon/cik.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/radeon/cik.c
Extension
.c
Size
285816 bytes
Lines
9808
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

struct kv_reset_save_regs {
	u32 gmcon_reng_execute;
	u32 gmcon_misc;
	u32 gmcon_misc3;
};

static void kv_save_regs_for_reset(struct radeon_device *rdev,
				   struct kv_reset_save_regs *save)
{
	save->gmcon_reng_execute = RREG32(GMCON_RENG_EXECUTE);
	save->gmcon_misc = RREG32(GMCON_MISC);
	save->gmcon_misc3 = RREG32(GMCON_MISC3);

	WREG32(GMCON_RENG_EXECUTE, save->gmcon_reng_execute & ~RENG_EXECUTE_ON_PWR_UP);
	WREG32(GMCON_MISC, save->gmcon_misc & ~(RENG_EXECUTE_ON_REG_UPDATE |
						STCTRL_STUTTER_EN));
}

static void kv_restore_regs_for_reset(struct radeon_device *rdev,
				      struct kv_reset_save_regs *save)
{
	int i;

	WREG32(GMCON_PGFSM_WRITE, 0);
	WREG32(GMCON_PGFSM_CONFIG, 0x200010ff);

	for (i = 0; i < 5; i++)
		WREG32(GMCON_PGFSM_WRITE, 0);

	WREG32(GMCON_PGFSM_WRITE, 0);
	WREG32(GMCON_PGFSM_CONFIG, 0x300010ff);

	for (i = 0; i < 5; i++)
		WREG32(GMCON_PGFSM_WRITE, 0);

	WREG32(GMCON_PGFSM_WRITE, 0x210000);
	WREG32(GMCON_PGFSM_CONFIG, 0xa00010ff);

	for (i = 0; i < 5; i++)
		WREG32(GMCON_PGFSM_WRITE, 0);

	WREG32(GMCON_PGFSM_WRITE, 0x21003);
	WREG32(GMCON_PGFSM_CONFIG, 0xb00010ff);

	for (i = 0; i < 5; i++)
		WREG32(GMCON_PGFSM_WRITE, 0);

	WREG32(GMCON_PGFSM_WRITE, 0x2b00);
	WREG32(GMCON_PGFSM_CONFIG, 0xc00010ff);

	for (i = 0; i < 5; i++)
		WREG32(GMCON_PGFSM_WRITE, 0);

	WREG32(GMCON_PGFSM_WRITE, 0);
	WREG32(GMCON_PGFSM_CONFIG, 0xd00010ff);

	for (i = 0; i < 5; i++)
		WREG32(GMCON_PGFSM_WRITE, 0);

	WREG32(GMCON_PGFSM_WRITE, 0x420000);
	WREG32(GMCON_PGFSM_CONFIG, 0x100010ff);

	for (i = 0; i < 5; i++)
		WREG32(GMCON_PGFSM_WRITE, 0);

	WREG32(GMCON_PGFSM_WRITE, 0x120202);
	WREG32(GMCON_PGFSM_CONFIG, 0x500010ff);

	for (i = 0; i < 5; i++)
		WREG32(GMCON_PGFSM_WRITE, 0);

	WREG32(GMCON_PGFSM_WRITE, 0x3e3e36);
	WREG32(GMCON_PGFSM_CONFIG, 0x600010ff);

	for (i = 0; i < 5; i++)
		WREG32(GMCON_PGFSM_WRITE, 0);

	WREG32(GMCON_PGFSM_WRITE, 0x373f3e);
	WREG32(GMCON_PGFSM_CONFIG, 0x700010ff);

	for (i = 0; i < 5; i++)
		WREG32(GMCON_PGFSM_WRITE, 0);

	WREG32(GMCON_PGFSM_WRITE, 0x3e1332);
	WREG32(GMCON_PGFSM_CONFIG, 0xe00010ff);

	WREG32(GMCON_MISC3, save->gmcon_misc3);
	WREG32(GMCON_MISC, save->gmcon_misc);
	WREG32(GMCON_RENG_EXECUTE, save->gmcon_reng_execute);
}

Annotation

Implementation Notes