drivers/net/wireless/ath/ath12k/wifi7/mhi.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/ath/ath12k/wifi7/mhi.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/ath/ath12k/wifi7/mhi.c
Extension
.c
Size
3139 bytes
Lines
135
Domain
Driver Families
Bucket
drivers/net
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

// SPDX-License-Identifier: BSD-3-Clause-Clear
/*
 * Copyright (c) 2020-2021 The Linux Foundation. All rights reserved.
 * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
 */

#include "../mhi.h"
#include "mhi.h"

static const struct mhi_channel_config ath12k_wifi7_mhi_channels_qcn9274[] = {
	{
		.num = 20,
		.name = "IPCR",
		.num_elements = 32,
		.event_ring = 1,
		.dir = DMA_TO_DEVICE,
		.ee_mask = 0x4,
		.pollcfg = 0,
		.doorbell = MHI_DB_BRST_DISABLE,
		.lpm_notify = false,
		.offload_channel = false,
		.doorbell_mode_switch = false,
	},
	{
		.num = 21,
		.name = "IPCR",
		.num_elements = 32,
		.event_ring = 1,
		.dir = DMA_FROM_DEVICE,
		.ee_mask = 0x4,
		.pollcfg = 0,
		.doorbell = MHI_DB_BRST_DISABLE,
		.lpm_notify = false,
		.offload_channel = false,
		.doorbell_mode_switch = false,
	},
};

static struct mhi_event_config ath12k_wifi7_mhi_events_qcn9274[] = {
	{
		.num_elements = 32,
		.irq_moderation_ms = 0,
		.irq = 1,
		.data_type = MHI_ER_CTRL,
		.mode = MHI_DB_BRST_DISABLE,
		.hardware_event = false,
		.client_managed = false,
		.offload_channel = false,
	},
	{
		.num_elements = 256,
		.irq_moderation_ms = 1,
		.irq = 2,
		.mode = MHI_DB_BRST_DISABLE,
		.priority = 1,
		.hardware_event = false,
		.client_managed = false,
		.offload_channel = false,
	},
};

const struct mhi_controller_config ath12k_wifi7_mhi_config_qcn9274 = {
	.max_channels = 30,
	.timeout_ms = 10000,
	.use_bounce_buf = false,
	.buf_len = 0,
	.num_channels = ARRAY_SIZE(ath12k_wifi7_mhi_channels_qcn9274),
	.ch_cfg = ath12k_wifi7_mhi_channels_qcn9274,
	.num_events = ARRAY_SIZE(ath12k_wifi7_mhi_events_qcn9274),
	.event_cfg = ath12k_wifi7_mhi_events_qcn9274,
};

static const struct mhi_channel_config ath12k_wifi7_mhi_channels_wcn7850[] = {
	{
		.num = 20,
		.name = "IPCR",
		.num_elements = 64,
		.event_ring = 1,
		.dir = DMA_TO_DEVICE,
		.ee_mask = 0x4,
		.pollcfg = 0,
		.doorbell = MHI_DB_BRST_DISABLE,
		.lpm_notify = false,
		.offload_channel = false,
		.doorbell_mode_switch = false,
	},
	{
		.num = 21,
		.name = "IPCR",
		.num_elements = 64,

Annotation

Implementation Notes