drivers/gpu/drm/xe/xe_mmio.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/xe/xe_mmio.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/xe/xe_mmio.h
Extension
.h
Size
1605 bytes
Lines
46
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

#ifndef _XE_MMIO_H_
#define _XE_MMIO_H_

#include "xe_mmio_types.h"

struct xe_device;
struct xe_reg;

int xe_mmio_probe_early(struct xe_device *xe);
int xe_mmio_probe_tiles(struct xe_device *xe);

void xe_mmio_init(struct xe_mmio *mmio, struct xe_tile *tile, void __iomem *ptr, u32 size);

u8 xe_mmio_read8(struct xe_mmio *mmio, struct xe_reg reg);
void xe_mmio_write8(struct xe_mmio *mmio, struct xe_reg reg, u8 val);
u16 xe_mmio_read16(struct xe_mmio *mmio, struct xe_reg reg);
void xe_mmio_write32(struct xe_mmio *mmio, struct xe_reg reg, u32 val);
u32 xe_mmio_read32(struct xe_mmio *mmio, struct xe_reg reg);
u32 xe_mmio_rmw32(struct xe_mmio *mmio, struct xe_reg reg, u32 clr, u32 set);
int xe_mmio_write32_and_verify(struct xe_mmio *mmio, struct xe_reg reg, u32 val, u32 mask, u32 eval);
bool xe_mmio_in_range(const struct xe_mmio *mmio, const struct xe_mmio_range *range, struct xe_reg reg);

u64 xe_mmio_read64_2x32(struct xe_mmio *mmio, struct xe_reg reg);
int xe_mmio_wait32(struct xe_mmio *mmio, struct xe_reg reg, u32 mask, u32 val,
		   u32 timeout_us, u32 *out_val, bool atomic);
int xe_mmio_wait32_not(struct xe_mmio *mmio, struct xe_reg reg, u32 mask,
		       u32 val, u32 timeout_us, u32 *out_val, bool atomic);

static inline u32 xe_mmio_adjusted_addr(const struct xe_mmio *mmio, u32 addr)
{
	if (addr < mmio->adj_limit)
		addr += mmio->adj_offset;
	return addr;
}

#ifdef CONFIG_PCI_IOV
void xe_mmio_init_vf_view(struct xe_mmio *mmio, const struct xe_mmio *base, unsigned int vfid);
#endif

#endif

Annotation

Implementation Notes