linux/drivers/net/wwan/t7xx/t7xx_pcie_mac.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2021, MediaTek Inc.
 * Copyright (c) 2021-2022, Intel Corporation.
 *
 * Authors:
 *  Haijun Liu <[email protected]>
 *  Moises Veleta <[email protected]>
 *  Sreehari Kancharla <[email protected]>
 *
 * Contributors:
 *  Amir Hanania <[email protected]>
 *  Chiranjeevi Rapolu <[email protected]>
 *  Ricardo Martinez <[email protected]>
 */

#include <linux/bits.h>
#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/io-64-nonatomic-lo-hi.h>
#include <linux/pci.h>
#include <linux/string.h>
#include <linux/types.h>

#include "t7xx_pci.h"
#include "t7xx_pcie_mac.h"
#include "t7xx_reg.h"

#define T7XX_PCIE_REG_BAR …
#define T7XX_PCIE_REG_PORT …
#define T7XX_PCIE_REG_TABLE_NUM …
#define T7XX_PCIE_REG_TRSL_PORT …

#define T7XX_PCIE_DEV_DMA_PORT_START …
#define T7XX_PCIE_DEV_DMA_PORT_END …
#define T7XX_PCIE_DEV_DMA_TABLE_NUM …
#define T7XX_PCIE_DEV_DMA_TRSL_ADDR …
#define T7XX_PCIE_DEV_DMA_SRC_ADDR …
#define T7XX_PCIE_DEV_DMA_TRANSPARENT …
#define T7XX_PCIE_DEV_DMA_SIZE …

enum t7xx_atr_src_port { … };

enum t7xx_atr_dst_port { … };

struct t7xx_atr_config { … };

static void t7xx_pcie_mac_atr_tables_dis(void __iomem *pbase, enum t7xx_atr_src_port port)
{ … }

static int t7xx_pcie_mac_atr_cfg(struct t7xx_pci_dev *t7xx_dev, struct t7xx_atr_config *cfg)
{ … }

/**
 * t7xx_pcie_mac_atr_init() - Initialize address translation.
 * @t7xx_dev: MTK device.
 *
 * Setup ATR for ports & device.
 */
void t7xx_pcie_mac_atr_init(struct t7xx_pci_dev *t7xx_dev)
{ … }

/**
 * t7xx_pcie_mac_enable_disable_int() - Enable/disable interrupts.
 * @t7xx_dev: MTK device.
 * @enable: Enable/disable.
 *
 * Enable or disable device interrupts.
 */
static void t7xx_pcie_mac_enable_disable_int(struct t7xx_pci_dev *t7xx_dev, bool enable)
{ … }

void t7xx_pcie_mac_interrupts_en(struct t7xx_pci_dev *t7xx_dev)
{ … }

void t7xx_pcie_mac_interrupts_dis(struct t7xx_pci_dev *t7xx_dev)
{ … }

/**
 * t7xx_pcie_mac_clear_set_int() - Clear/set interrupt by type.
 * @t7xx_dev: MTK device.
 * @int_type: Interrupt type.
 * @clear: Clear/set.
 *
 * Clear or set device interrupt by type.
 */
static void t7xx_pcie_mac_clear_set_int(struct t7xx_pci_dev *t7xx_dev,
					enum t7xx_int int_type, bool clear)
{ … }

void t7xx_pcie_mac_clear_int(struct t7xx_pci_dev *t7xx_dev, enum t7xx_int int_type)
{ … }

void t7xx_pcie_mac_set_int(struct t7xx_pci_dev *t7xx_dev, enum t7xx_int int_type)
{ … }

/**
 * t7xx_pcie_mac_clear_int_status() - Clear interrupt status by type.
 * @t7xx_dev: MTK device.
 * @int_type: Interrupt type.
 *
 * Enable or disable device interrupts' status by type.
 */
void t7xx_pcie_mac_clear_int_status(struct t7xx_pci_dev *t7xx_dev, enum t7xx_int int_type)
{ … }

/**
 * t7xx_pcie_set_mac_msix_cfg() - Write MSIX control configuration.
 * @t7xx_dev: MTK device.
 * @irq_count: Number of MSIX IRQ vectors.
 *
 * Write IRQ count to device.
 */
void t7xx_pcie_set_mac_msix_cfg(struct t7xx_pci_dev *t7xx_dev, unsigned int irq_count)
{ … }