drivers/infiniband/hw/irdma/ig3rdma_hw.c

Source file repositories/reference/linux-study-clean/drivers/infiniband/hw/irdma/ig3rdma_hw.c

File Facts

System
Linux kernel
Corpus path
drivers/infiniband/hw/irdma/ig3rdma_hw.c
Extension
.c
Size
6152 bytes
Lines
170
Domain
Driver Families
Bucket
drivers/infiniband
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 or Linux-OpenIB
/* Copyright (c) 2018 - 2024 Intel Corporation */
#include "osdep.h"
#include "type.h"
#include "protos.h"
#include "ig3rdma_hw.h"

/**
 * ig3rdma_ena_irq - Enable interrupt
 * @dev: pointer to the device structure
 * @idx: vector index
 */
static void ig3rdma_ena_irq(struct irdma_sc_dev *dev, u32 idx)
{
	u32 val;
	u32 int_stride = 1; /* one u32 per register */

	if (dev->is_pf)
		int_stride = 0x400;
	else
		idx--; /* VFs use DYN_CTL_N */

	val = FIELD_PREP(IRDMA_GLINT_DYN_CTL_INTENA, 1) |
	      FIELD_PREP(IRDMA_GLINT_DYN_CTL_CLEARPBA, 1);

	writel(val, dev->hw_regs[IRDMA_GLINT_DYN_CTL] + (idx * int_stride));
}

/**
 * ig3rdma_disable_irq - Disable interrupt
 * @dev: pointer to the device structure
 * @idx: vector index
 */
static void ig3rdma_disable_irq(struct irdma_sc_dev *dev, u32 idx)
{
	u32 int_stride = 1; /* one u32 per register */

	if (dev->is_pf)
		int_stride = 0x400;
	else
		idx--; /* VFs use DYN_CTL_N */

	writel(0, dev->hw_regs[IRDMA_GLINT_DYN_CTL] + (idx * int_stride));
}

static const struct irdma_irq_ops ig3rdma_irq_ops = {
	.irdma_dis_irq = ig3rdma_disable_irq,
	.irdma_en_irq = ig3rdma_ena_irq,
};

static const struct irdma_hw_stat_map ig3rdma_hw_stat_map[] = {
	[IRDMA_HW_STAT_INDEX_RXVLANERR] =	{   0, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP4RXOCTS] =	{   8, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP4RXPKTS] =	{  16, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP4RXDISCARD] =	{  24, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP4RXTRUNC] =	{  32, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP4RXFRAGS] =	{  40, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP4RXMCOCTS] =	{  48, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP4RXMCPKTS] =	{  56, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP6RXOCTS] =	{  64, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP6RXPKTS] =	{  72, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP6RXDISCARD] =	{  80, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP6RXTRUNC] =	{  88, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP6RXFRAGS] =	{  96, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP6RXMCOCTS] =	{ 104, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP6RXMCPKTS] =	{ 112, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP4TXOCTS] =	{ 120, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP4TXPKTS] =	{ 128, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP4TXFRAGS] =	{ 136, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP4TXMCOCTS] =	{ 144, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP4TXMCPKTS] =	{ 152, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP6TXOCTS] =	{ 160, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP6TXPKTS] =	{ 168, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP6TXFRAGS] =	{ 176, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP6TXMCOCTS] =	{ 184, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP6TXMCPKTS] =	{ 192, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP4TXNOROUTE] =	{ 200, 0, 0 },
	[IRDMA_HW_STAT_INDEX_IP6TXNOROUTE] =	{ 208, 0, 0 },
	[IRDMA_HW_STAT_INDEX_TCPRTXSEG] =	{ 216, 0, 0 },
	[IRDMA_HW_STAT_INDEX_TCPRXOPTERR] =	{ 224, 0, 0 },
	[IRDMA_HW_STAT_INDEX_TCPRXPROTOERR] =	{ 232, 0, 0 },
	[IRDMA_HW_STAT_INDEX_TCPTXSEG] =	{ 240, 0, 0 },
	[IRDMA_HW_STAT_INDEX_TCPRXSEGS] =	{ 248, 0, 0 },
	[IRDMA_HW_STAT_INDEX_UDPRXPKTS] =	{ 256, 0, 0 },
	[IRDMA_HW_STAT_INDEX_UDPTXPKTS] =	{ 264, 0, 0 },
	[IRDMA_HW_STAT_INDEX_RDMARXWRS] =	{ 272, 0, 0 },
	[IRDMA_HW_STAT_INDEX_RDMARXRDS] =	{ 280, 0, 0 },
	[IRDMA_HW_STAT_INDEX_RDMARXSNDS] =	{ 288, 0, 0 },
	[IRDMA_HW_STAT_INDEX_RDMATXWRS] =	{ 296, 0, 0 },
	[IRDMA_HW_STAT_INDEX_RDMATXRDS] =	{ 304, 0, 0 },

Annotation

Implementation Notes