drivers/gpu/drm/amd/amdgpu/mmhub_v2_3.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/amdgpu/mmhub_v2_3.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/amdgpu/mmhub_v2_3.c
Extension
.c
Size
23154 bytes
Lines
625
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 "amdgpu.h"
#include "mmhub_v2_3.h"

#include "mmhub/mmhub_2_3_0_offset.h"
#include "mmhub/mmhub_2_3_0_sh_mask.h"
#include "mmhub/mmhub_2_3_0_default.h"
#include "navi10_enum.h"

#include "soc15_common.h"

static const char *mmhub_client_ids_vangogh[][2] = {
	[0][0] = "MP0",
	[1][0] = "MP1",
	[2][0] = "DCEDMC",
	[3][0] = "DCEVGA",
	[13][0] = "UTCL2",
	[26][0] = "OSS",
	[27][0] = "HDP",
	[28][0] = "VCN",
	[29][0] = "VCNU",
	[30][0] = "JPEG",
	[0][1] = "MP0",
	[1][1] = "MP1",
	[2][1] = "DCEDMC",
	[3][1] = "DCEVGA",
	[4][1] = "DCEDWB",
	[5][1] = "XDP",
	[26][1] = "OSS",
	[27][1] = "HDP",
	[28][1] = "VCN",
	[29][1] = "VCNU",
	[30][1] = "JPEG",
};

static uint32_t mmhub_v2_3_get_invalidate_req(unsigned int vmid,
					      uint32_t flush_type)
{
	u32 req = 0;

	/* invalidate using legacy mode on vmid*/
	req = REG_SET_FIELD(req, MMVM_INVALIDATE_ENG0_REQ,
			    PER_VMID_INVALIDATE_REQ, 1 << vmid);
	req = REG_SET_FIELD(req, MMVM_INVALIDATE_ENG0_REQ, FLUSH_TYPE, flush_type);
	req = REG_SET_FIELD(req, MMVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PTES, 1);
	req = REG_SET_FIELD(req, MMVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PDE0, 1);
	req = REG_SET_FIELD(req, MMVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PDE1, 1);
	req = REG_SET_FIELD(req, MMVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PDE2, 1);
	req = REG_SET_FIELD(req, MMVM_INVALIDATE_ENG0_REQ, INVALIDATE_L1_PTES, 1);
	req = REG_SET_FIELD(req, MMVM_INVALIDATE_ENG0_REQ,
			    CLEAR_PROTECTION_FAULT_STATUS_ADDR,	0);

	return req;
}

static void
mmhub_v2_3_print_l2_protection_fault_status(struct amdgpu_device *adev,
					     uint32_t status)
{
	uint32_t cid, rw;
	const char *mmhub_cid;

	cid = REG_GET_FIELD(status,
			    MMVM_L2_PROTECTION_FAULT_STATUS, CID);
	rw = REG_GET_FIELD(status,
			   MMVM_L2_PROTECTION_FAULT_STATUS, RW);

	dev_err(adev->dev,
		"MMVM_L2_PROTECTION_FAULT_STATUS:0x%08X\n",
		status);
	mmhub_cid = amdgpu_mmhub_client_name(&adev->mmhub, cid, rw);
	dev_err(adev->dev, "\t Faulty UTCL2 client ID: %s (0x%x)\n",
		mmhub_cid ? mmhub_cid : "unknown", cid);
	dev_err(adev->dev, "\t MORE_FAULTS: 0x%lx\n",
		REG_GET_FIELD(status,
		MMVM_L2_PROTECTION_FAULT_STATUS, MORE_FAULTS));
	dev_err(adev->dev, "\t WALKER_ERROR: 0x%lx\n",
		REG_GET_FIELD(status,
		MMVM_L2_PROTECTION_FAULT_STATUS, WALKER_ERROR));
	dev_err(adev->dev, "\t PERMISSION_FAULTS: 0x%lx\n",
		REG_GET_FIELD(status,
		MMVM_L2_PROTECTION_FAULT_STATUS, PERMISSION_FAULTS));
	dev_err(adev->dev, "\t MAPPING_ERROR: 0x%lx\n",
		REG_GET_FIELD(status,
		MMVM_L2_PROTECTION_FAULT_STATUS, MAPPING_ERROR));
	dev_err(adev->dev, "\t RW: 0x%x\n", rw);
}

static void mmhub_v2_3_setup_vm_pt_regs(struct amdgpu_device *adev,
					uint32_t vmid,
					uint64_t page_table_base)

Annotation

Implementation Notes