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linux_dsm_epyc7002/drivers/net/ethernet/pensando/ionic/ionic_dev.h
Shannon Nelson 8c15440bce ionic: Add coalesce and other features 
Interrupt coalescing, tunable copybreak value, and
tx timeout.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05 09:24:44 +02:00

300 lines
9.6 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
#ifndef _IONIC_DEV_H_
#define _IONIC_DEV_H_
#include <linux/mutex.h>
#include <linux/workqueue.h>
#include "ionic_if.h"
#include "ionic_regs.h"
#define IONIC_MIN_MTU ETH_MIN_MTU
#define IONIC_MAX_MTU 9194
#define IONIC_MAX_TXRX_DESC 16384
#define IONIC_MIN_TXRX_DESC 16
#define IONIC_DEF_TXRX_DESC 4096
#define IONIC_LIFS_MAX 1024
#define IONIC_ITR_COAL_USEC_DEFAULT 64
#define IONIC_DEV_CMD_REG_VERSION 1
#define IONIC_DEV_INFO_REG_COUNT 32
#define IONIC_DEV_CMD_REG_COUNT 32
struct ionic_dev_bar {
void __iomem *vaddr;
phys_addr_t bus_addr;
unsigned long len;
int res_index;
};
/* Registers */
static_assert(sizeof(struct ionic_intr) == 32);
static_assert(sizeof(struct ionic_doorbell) == 8);
static_assert(sizeof(struct ionic_intr_status) == 8);
static_assert(sizeof(union ionic_dev_regs) == 4096);
static_assert(sizeof(union ionic_dev_info_regs) == 2048);
static_assert(sizeof(union ionic_dev_cmd_regs) == 2048);
static_assert(sizeof(struct ionic_lif_stats) == 1024);
static_assert(sizeof(struct ionic_admin_cmd) == 64);
static_assert(sizeof(struct ionic_admin_comp) == 16);
static_assert(sizeof(struct ionic_nop_cmd) == 64);
static_assert(sizeof(struct ionic_nop_comp) == 16);
/* Device commands */
static_assert(sizeof(struct ionic_dev_identify_cmd) == 64);
static_assert(sizeof(struct ionic_dev_identify_comp) == 16);
static_assert(sizeof(struct ionic_dev_init_cmd) == 64);
static_assert(sizeof(struct ionic_dev_init_comp) == 16);
static_assert(sizeof(struct ionic_dev_reset_cmd) == 64);
static_assert(sizeof(struct ionic_dev_reset_comp) == 16);
static_assert(sizeof(struct ionic_dev_getattr_cmd) == 64);
static_assert(sizeof(struct ionic_dev_getattr_comp) == 16);
static_assert(sizeof(struct ionic_dev_setattr_cmd) == 64);
static_assert(sizeof(struct ionic_dev_setattr_comp) == 16);
/* Port commands */
static_assert(sizeof(struct ionic_port_identify_cmd) == 64);
static_assert(sizeof(struct ionic_port_identify_comp) == 16);
static_assert(sizeof(struct ionic_port_init_cmd) == 64);
static_assert(sizeof(struct ionic_port_init_comp) == 16);
static_assert(sizeof(struct ionic_port_reset_cmd) == 64);
static_assert(sizeof(struct ionic_port_reset_comp) == 16);
static_assert(sizeof(struct ionic_port_getattr_cmd) == 64);
static_assert(sizeof(struct ionic_port_getattr_comp) == 16);
static_assert(sizeof(struct ionic_port_setattr_cmd) == 64);
static_assert(sizeof(struct ionic_port_setattr_comp) == 16);
/* LIF commands */
static_assert(sizeof(struct ionic_lif_init_cmd) == 64);
static_assert(sizeof(struct ionic_lif_init_comp) == 16);
static_assert(sizeof(struct ionic_lif_reset_cmd) == 64);
static_assert(sizeof(ionic_lif_reset_comp) == 16);
static_assert(sizeof(struct ionic_lif_getattr_cmd) == 64);
static_assert(sizeof(struct ionic_lif_getattr_comp) == 16);
static_assert(sizeof(struct ionic_lif_setattr_cmd) == 64);
static_assert(sizeof(struct ionic_lif_setattr_comp) == 16);
static_assert(sizeof(struct ionic_q_init_cmd) == 64);
static_assert(sizeof(struct ionic_q_init_comp) == 16);
static_assert(sizeof(struct ionic_q_control_cmd) == 64);
static_assert(sizeof(ionic_q_control_comp) == 16);
static_assert(sizeof(struct ionic_rx_mode_set_cmd) == 64);
static_assert(sizeof(ionic_rx_mode_set_comp) == 16);
static_assert(sizeof(struct ionic_rx_filter_add_cmd) == 64);
static_assert(sizeof(struct ionic_rx_filter_add_comp) == 16);
static_assert(sizeof(struct ionic_rx_filter_del_cmd) == 64);
static_assert(sizeof(ionic_rx_filter_del_comp) == 16);
/* RDMA commands */
static_assert(sizeof(struct ionic_rdma_reset_cmd) == 64);
static_assert(sizeof(struct ionic_rdma_queue_cmd) == 64);
/* Events */
static_assert(sizeof(struct ionic_notifyq_cmd) == 4);
static_assert(sizeof(union ionic_notifyq_comp) == 64);
static_assert(sizeof(struct ionic_notifyq_event) == 64);
static_assert(sizeof(struct ionic_link_change_event) == 64);
static_assert(sizeof(struct ionic_reset_event) == 64);
static_assert(sizeof(struct ionic_heartbeat_event) == 64);
static_assert(sizeof(struct ionic_log_event) == 64);
/* I/O */
static_assert(sizeof(struct ionic_txq_desc) == 16);
static_assert(sizeof(struct ionic_txq_sg_desc) == 128);
static_assert(sizeof(struct ionic_txq_comp) == 16);
static_assert(sizeof(struct ionic_rxq_desc) == 16);
static_assert(sizeof(struct ionic_rxq_sg_desc) == 128);
static_assert(sizeof(struct ionic_rxq_comp) == 16);
struct ionic_devinfo {
u8 asic_type;
u8 asic_rev;
char fw_version[IONIC_DEVINFO_FWVERS_BUFLEN + 1];
char serial_num[IONIC_DEVINFO_SERIAL_BUFLEN + 1];
};
struct ionic_dev {
union ionic_dev_info_regs __iomem *dev_info_regs;
union ionic_dev_cmd_regs __iomem *dev_cmd_regs;
u64 __iomem *db_pages;
dma_addr_t phy_db_pages;
struct ionic_intr __iomem *intr_ctrl;
u64 __iomem *intr_status;
u32 port_info_sz;
struct ionic_port_info *port_info;
dma_addr_t port_info_pa;
struct ionic_devinfo dev_info;
};
struct ionic_cq_info {
void *cq_desc;
struct ionic_cq_info *next;
unsigned int index;
bool last;
};
struct ionic_queue;
struct ionic_qcq;
struct ionic_desc_info;
typedef void (*ionic_desc_cb)(struct ionic_queue *q,
struct ionic_desc_info *desc_info,
struct ionic_cq_info *cq_info, void *cb_arg);
struct ionic_desc_info {
void *desc;
void *sg_desc;
struct ionic_desc_info *next;
unsigned int index;
unsigned int left;
ionic_desc_cb cb;
void *cb_arg;
};
#define QUEUE_NAME_MAX_SZ 32
struct ionic_queue {
u64 dbell_count;
u64 drop;
u64 stop;
u64 wake;
struct ionic_lif *lif;
struct ionic_desc_info *info;
struct ionic_desc_info *tail;
struct ionic_desc_info *head;
struct ionic_dev *idev;
unsigned int index;
unsigned int type;
unsigned int hw_index;
unsigned int hw_type;
u64 dbval;
void *base;
void *sg_base;
dma_addr_t base_pa;
dma_addr_t sg_base_pa;
unsigned int num_descs;
unsigned int desc_size;
unsigned int sg_desc_size;
unsigned int pid;
char name[QUEUE_NAME_MAX_SZ];
};
#define INTR_INDEX_NOT_ASSIGNED -1
#define INTR_NAME_MAX_SZ 32
struct ionic_intr_info {
char name[INTR_NAME_MAX_SZ];
unsigned int index;
unsigned int vector;
u64 rearm_count;
unsigned int cpu;
cpumask_t affinity_mask;
};
struct ionic_cq {
void *base;
dma_addr_t base_pa;
struct ionic_lif *lif;
struct ionic_cq_info *info;
struct ionic_cq_info *tail;
struct ionic_queue *bound_q;
struct ionic_intr_info *bound_intr;
bool done_color;
unsigned int num_descs;
u64 compl_count;
unsigned int desc_size;
};
struct ionic;
static inline void ionic_intr_init(struct ionic_dev *idev,
struct ionic_intr_info *intr,
unsigned long index)
{
ionic_intr_clean(idev->intr_ctrl, index);
intr->index = index;
}
static inline unsigned int ionic_q_space_avail(struct ionic_queue *q)
{
unsigned int avail = q->tail->index;
if (q->head->index >= avail)
avail += q->head->left - 1;
else
avail -= q->head->index + 1;
return avail;
}
static inline bool ionic_q_has_space(struct ionic_queue *q, unsigned int want)
{
return ionic_q_space_avail(q) >= want;
}
void ionic_init_devinfo(struct ionic *ionic);
int ionic_dev_setup(struct ionic *ionic);
void ionic_dev_teardown(struct ionic *ionic);
void ionic_dev_cmd_go(struct ionic_dev *idev, union ionic_dev_cmd *cmd);
u8 ionic_dev_cmd_status(struct ionic_dev *idev);
bool ionic_dev_cmd_done(struct ionic_dev *idev);
void ionic_dev_cmd_comp(struct ionic_dev *idev, union ionic_dev_cmd_comp *comp);
void ionic_dev_cmd_identify(struct ionic_dev *idev, u8 ver);
void ionic_dev_cmd_init(struct ionic_dev *idev);
void ionic_dev_cmd_reset(struct ionic_dev *idev);
void ionic_dev_cmd_port_identify(struct ionic_dev *idev);
void ionic_dev_cmd_port_init(struct ionic_dev *idev);
void ionic_dev_cmd_port_reset(struct ionic_dev *idev);
void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state);
void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed);
void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable);
void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type);
void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type);
void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver);
void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index,
dma_addr_t addr);
void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index);
void ionic_dev_cmd_adminq_init(struct ionic_dev *idev, struct ionic_qcq *qcq,
u16 lif_index, u16 intr_index);
int ionic_db_page_num(struct ionic_lif *lif, int pid);
int ionic_cq_init(struct ionic_lif *lif, struct ionic_cq *cq,
struct ionic_intr_info *intr,
unsigned int num_descs, size_t desc_size);
void ionic_cq_map(struct ionic_cq *cq, void *base, dma_addr_t base_pa);
void ionic_cq_bind(struct ionic_cq *cq, struct ionic_queue *q);
typedef bool (*ionic_cq_cb)(struct ionic_cq *cq, struct ionic_cq_info *cq_info);
typedef void (*ionic_cq_done_cb)(void *done_arg);
unsigned int ionic_cq_service(struct ionic_cq *cq, unsigned int work_to_do,
ionic_cq_cb cb, ionic_cq_done_cb done_cb,
void *done_arg);
int ionic_q_init(struct ionic_lif *lif, struct ionic_dev *idev,
struct ionic_queue *q, unsigned int index, const char *name,
unsigned int num_descs, size_t desc_size,
size_t sg_desc_size, unsigned int pid);
void ionic_q_map(struct ionic_queue *q, void *base, dma_addr_t base_pa);
void ionic_q_sg_map(struct ionic_queue *q, void *base, dma_addr_t base_pa);
void ionic_q_post(struct ionic_queue *q, bool ring_doorbell, ionic_desc_cb cb,
void *cb_arg);
void ionic_q_rewind(struct ionic_queue *q, struct ionic_desc_info *start);
void ionic_q_service(struct ionic_queue *q, struct ionic_cq_info *cq_info,
unsigned int stop_index);
#endif /* _IONIC_DEV_H_ */
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