linux/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (c) 2014-2015 Hisilicon Limited.
 */

#include <linux/cdev.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <asm/cacheflush.h>
#include <linux/platform_device.h>
#include <linux/spinlock.h>

#include "hns_dsaf_main.h"
#include "hns_dsaf_ppe.h"
#include "hns_dsaf_rcb.h"

#define RCB_COMMON_REG_OFFSET …
#define TX_RING …
#define RX_RING …

#define RCB_RESET_WAIT_TIMES …
#define RCB_RESET_TRY_TIMES …

/* Because default mtu is 1500, rcb buffer size is set to 2048 enough */
#define RCB_DEFAULT_BUFFER_SIZE …

/**
 *hns_rcb_wait_fbd_clean - clean fbd
 *@qs: ring struct pointer array
 *@q_num: num of array
 *@flag: tx or rx flag
 */
void hns_rcb_wait_fbd_clean(struct hnae_queue **qs, int q_num, u32 flag)
{ … }

int hns_rcb_wait_tx_ring_clean(struct hnae_queue *qs)
{ … }

/**
 *hns_rcb_reset_ring_hw - ring reset
 *@q: ring struct pointer
 */
void hns_rcb_reset_ring_hw(struct hnae_queue *q)
{ … }

/**
 *hns_rcb_int_ctrl_hw - rcb irq enable control
 *@q: hnae queue struct pointer
 *@flag:ring flag tx or rx
 *@mask:mask
 */
void hns_rcb_int_ctrl_hw(struct hnae_queue *q, u32 flag, u32 mask)
{ … }

void hns_rcb_int_clr_hw(struct hnae_queue *q, u32 flag)
{ … }

void hns_rcbv2_int_ctrl_hw(struct hnae_queue *q, u32 flag, u32 mask)
{ … }

void hns_rcbv2_int_clr_hw(struct hnae_queue *q, u32 flag)
{ … }

/**
 *hns_rcb_ring_enable_hw - enable ring
 *@q: rcb ring
 *@val: value to write
 */
void hns_rcb_ring_enable_hw(struct hnae_queue *q, u32 val)
{ … }

void hns_rcb_start(struct hnae_queue *q, u32 val)
{ … }

/**
 *hns_rcb_common_init_commit_hw - make rcb common init completed
 *@rcb_common: rcb common device
 */
void hns_rcb_common_init_commit_hw(struct rcb_common_cb *rcb_common)
{ … }

/* hns_rcb_set_tx_ring_bs - init rcb ring buf size regester
 *@q: hnae_queue
 *@buf_size: buffer size set to hw
 */
void hns_rcb_set_tx_ring_bs(struct hnae_queue *q, u32 buf_size)
{ … }

/* hns_rcb_set_rx_ring_bs - init rcb ring buf size regester
 *@q: hnae_queue
 *@buf_size: buffer size set to hw
 */
void hns_rcb_set_rx_ring_bs(struct hnae_queue *q, u32 buf_size)
{ … }

/**
 *hns_rcb_ring_init - init rcb ring
 *@ring_pair: ring pair control block
 *@ring_type: ring type, RX_RING or TX_RING
 */
static void hns_rcb_ring_init(struct ring_pair_cb *ring_pair, int ring_type)
{ … }

/**
 *hns_rcb_init_hw - init rcb hardware
 *@ring: rcb ring
 */
void hns_rcb_init_hw(struct ring_pair_cb *ring)
{ … }

/**
 *hns_rcb_set_port_desc_cnt - set rcb port description num
 *@rcb_common: rcb_common device
 *@port_idx:port index
 *@desc_cnt:BD num
 */
static void hns_rcb_set_port_desc_cnt(struct rcb_common_cb *rcb_common,
				      u32 port_idx, u32 desc_cnt)
{ … }

static void hns_rcb_set_port_timeout(
	struct rcb_common_cb *rcb_common, u32 port_idx, u32 timeout)
{ … }

static int hns_rcb_common_get_port_num(struct rcb_common_cb *rcb_common)
{ … }

/*clr rcb comm exception irq**/
static void hns_rcb_comm_exc_irq_en(
			struct rcb_common_cb *rcb_common, int en)
{ … }

/**
 *hns_rcb_common_init_hw - init rcb common hardware
 *@rcb_common: rcb_common device
 *retuen 0 - success , negative --fail
 */
int hns_rcb_common_init_hw(struct rcb_common_cb *rcb_common)
{ … }

int hns_rcb_buf_size2type(u32 buf_size)
{ … }

static void hns_rcb_ring_get_cfg(struct hnae_queue *q, int ring_type)
{ … }

static void hns_rcb_ring_pair_get_cfg(struct ring_pair_cb *ring_pair_cb)
{ … }

static int hns_rcb_get_port_in_comm(
	struct rcb_common_cb *rcb_common, int ring_idx)
{ … }

#define SERVICE_RING_IRQ_IDX(v1) …
static int hns_rcb_get_base_irq_idx(struct rcb_common_cb *rcb_common)
{ … }

#define RCB_COMM_BASE_TO_RING_BASE(base, ringid) …
/**
 *hns_rcb_get_cfg - get rcb config
 *@rcb_common: rcb common device
 */
int hns_rcb_get_cfg(struct rcb_common_cb *rcb_common)
{ … }

/**
 *hns_rcb_get_rx_coalesced_frames - get rcb port rx coalesced frames
 *@rcb_common: rcb_common device
 *@port_idx:port id in comm
 *
 *Returns: coalesced_frames
 */
u32 hns_rcb_get_rx_coalesced_frames(
	struct rcb_common_cb *rcb_common, u32 port_idx)
{ … }

/**
 *hns_rcb_get_tx_coalesced_frames - get rcb port tx coalesced frames
 *@rcb_common: rcb_common device
 *@port_idx:port id in comm
 *
 *Returns: coalesced_frames
 */
u32 hns_rcb_get_tx_coalesced_frames(
	struct rcb_common_cb *rcb_common, u32 port_idx)
{ … }

/**
 *hns_rcb_get_coalesce_usecs - get rcb port coalesced time_out
 *@rcb_common: rcb_common device
 *@port_idx:port id in comm
 *
 *Returns: time_out
 */
u32 hns_rcb_get_coalesce_usecs(
	struct rcb_common_cb *rcb_common, u32 port_idx)
{ … }

/**
 *hns_rcb_set_coalesce_usecs - set rcb port coalesced time_out
 *@rcb_common: rcb_common device
 *@port_idx:port id in comm
 *@timeout:tx/rx time for coalesced time_out
 *
 * Returns:
 * Zero for success, or an error code in case of failure
 */
int hns_rcb_set_coalesce_usecs(
	struct rcb_common_cb *rcb_common, u32 port_idx, u32 timeout)
{ … }

/**
 *hns_rcb_set_tx_coalesced_frames - set rcb coalesced frames
 *@rcb_common: rcb_common device
 *@port_idx:port id in comm
 *@coalesced_frames:tx/rx BD num for coalesced frames
 *
 * Returns:
 * Zero for success, or an error code in case of failure
 */
int hns_rcb_set_tx_coalesced_frames(
	struct rcb_common_cb *rcb_common, u32 port_idx, u32 coalesced_frames)
{ … }

/**
 *hns_rcb_set_rx_coalesced_frames - set rcb rx coalesced frames
 *@rcb_common: rcb_common device
 *@port_idx:port id in comm
 *@coalesced_frames:tx/rx BD num for coalesced frames
 *
 * Returns:
 * Zero for success, or an error code in case of failure
 */
int hns_rcb_set_rx_coalesced_frames(
	struct rcb_common_cb *rcb_common, u32 port_idx, u32 coalesced_frames)
{ … }

/**
 *hns_rcb_get_queue_mode - get max VM number and max ring number per VM
 *						accordding to dsaf mode
 *@dsaf_mode: dsaf mode
 *@max_vfn : max vfn number
 *@max_q_per_vf:max ring number per vm
 */
void hns_rcb_get_queue_mode(enum dsaf_mode dsaf_mode, u16 *max_vfn,
			    u16 *max_q_per_vf)
{ … }

static int hns_rcb_get_ring_num(struct dsaf_device *dsaf_dev)
{ … }

static u8 __iomem *hns_rcb_common_get_vaddr(struct rcb_common_cb *rcb_common)
{ … }

static phys_addr_t hns_rcb_common_get_paddr(struct rcb_common_cb *rcb_common)
{ … }

int hns_rcb_common_get_cfg(struct dsaf_device *dsaf_dev,
			   int comm_index)
{ … }

void hns_rcb_common_free_cfg(struct dsaf_device *dsaf_dev,
			     u32 comm_index)
{ … }

void hns_rcb_update_stats(struct hnae_queue *queue)
{ … }

/**
 *hns_rcb_get_stats - get rcb statistic
 *@queue: rcb ring
 *@data:statistic value
 */
void hns_rcb_get_stats(struct hnae_queue *queue, u64 *data)
{ … }

/**
 *hns_rcb_get_ring_sset_count - rcb string set count
 *@stringset:ethtool cmd
 *return rcb ring string set count
 */
int hns_rcb_get_ring_sset_count(int stringset)
{ … }

/**
 *hns_rcb_get_common_regs_count - rcb common regs count
 *return regs count
 */
int hns_rcb_get_common_regs_count(void)
{ … }

/**
 *hns_rcb_get_ring_regs_count - rcb ring regs count
 *return regs count
 */
int hns_rcb_get_ring_regs_count(void)
{ … }

/**
 *hns_rcb_get_strings - get rcb string set
 *@stringset:string set index
 *@data:strings name value
 *@index:queue index
 */
void hns_rcb_get_strings(int stringset, u8 *data, int index)
{ … }

void hns_rcb_get_common_regs(struct rcb_common_cb *rcb_com, void *data)
{ … }

void hns_rcb_get_ring_regs(struct hnae_queue *queue, void *data)
{ … }