drivers/net/ipa/data/ipa_data-v4.5.c

Source file repositories/reference/linux-study-clean/drivers/net/ipa/data/ipa_data-v4.5.c

File Facts

System
Linux kernel
Corpus path
drivers/net/ipa/data/ipa_data-v4.5.c
Extension
.c
Size
10479 bytes
Lines
463
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: GPL-2.0

/* Copyright (C) 2021-2024 Linaro Ltd. */

#include <linux/array_size.h>
#include <linux/log2.h>

#include "../ipa_data.h"
#include "../ipa_endpoint.h"
#include "../ipa_mem.h"
#include "../ipa_version.h"

/** enum ipa_resource_type - IPA resource types for an SoC having IPA v4.5 */
enum ipa_resource_type {
	/* Source resource types; first must have value 0 */
	IPA_RESOURCE_TYPE_SRC_PKT_CONTEXTS		= 0,
	IPA_RESOURCE_TYPE_SRC_DESCRIPTOR_LISTS,
	IPA_RESOURCE_TYPE_SRC_DESCRIPTOR_BUFF,
	IPA_RESOURCE_TYPE_SRC_HPS_DMARS,
	IPA_RESOURCE_TYPE_SRC_ACK_ENTRIES,

	/* Destination resource types; first must have value 0 */
	IPA_RESOURCE_TYPE_DST_DATA_SECTORS		= 0,
	IPA_RESOURCE_TYPE_DST_DPS_DMARS,
};

/* Resource groups used for an SoC having IPA v4.5 */
enum ipa_rsrc_group_id {
	/* Source resource group identifiers */
	IPA_RSRC_GROUP_SRC_UNUSED_0		= 0,
	IPA_RSRC_GROUP_SRC_UL_DL,
	IPA_RSRC_GROUP_SRC_UNUSED_2,
	IPA_RSRC_GROUP_SRC_UNUSED_3,
	IPA_RSRC_GROUP_SRC_UC_RX_Q,
	IPA_RSRC_GROUP_SRC_COUNT,	/* Last in set; not a source group */

	/* Destination resource group identifiers */
	IPA_RSRC_GROUP_DST_UNUSED_0		= 0,
	IPA_RSRC_GROUP_DST_UL_DL_DPL,
	IPA_RSRC_GROUP_DST_UNUSED_2,
	IPA_RSRC_GROUP_DST_UNUSED_3,
	IPA_RSRC_GROUP_DST_UC,
	IPA_RSRC_GROUP_DST_COUNT,	/* Last; not a destination group */
};

/* QSB configuration data for an SoC having IPA v4.5 */
static const struct ipa_qsb_data ipa_qsb_data[] = {
	[IPA_QSB_MASTER_DDR] = {
		.max_writes		= 8,
		.max_reads		= 0,	/* no limit (hardware max) */
		.max_reads_beats	= 120,
	},
	[IPA_QSB_MASTER_PCIE] = {
		.max_writes		= 8,
		.max_reads		= 12,
		/* no outstanding read byte (beat) limit */
	},
};

/* Endpoint configuration data for an SoC having IPA v4.5 */
static const struct ipa_gsi_endpoint_data ipa_gsi_endpoint_data[] = {
	[IPA_ENDPOINT_AP_COMMAND_TX] = {
		.ee_id		= GSI_EE_AP,
		.channel_id	= 9,
		.endpoint_id	= 7,
		.toward_ipa	= true,
		.channel = {
			.tre_count	= 256,
			.event_count	= 256,
			.tlv_count	= 20,
		},
		.endpoint = {
			.config = {
				.resource_group	= IPA_RSRC_GROUP_SRC_UL_DL,
				.dma_mode	= true,
				.dma_endpoint	= IPA_ENDPOINT_AP_LAN_RX,
				.tx = {
					.seq_type = IPA_SEQ_DMA,
				},
			},
		},
	},
	[IPA_ENDPOINT_AP_LAN_RX] = {
		.ee_id		= GSI_EE_AP,
		.channel_id	= 10,
		.endpoint_id	= 16,
		.toward_ipa	= false,
		.channel = {
			.tre_count	= 256,
			.event_count	= 256,

Annotation

Implementation Notes