mirror of
https://github.com/freebsd/freebsd-src
synced 2024-07-22 02:37:15 +00:00
9c067b844f
This driver is based of the enic (Cisco VIC) DPDK driver. It provides basic ethernet functionality. Has been run with various VIC cards to do UEFI PXE boot with NFS root.
143 lines
3.3 KiB
C
143 lines
3.3 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
|
|
* Copyright 2008-2017 Cisco Systems, Inc. All rights reserved.
|
|
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
|
*/
|
|
|
|
#ifndef _VNIC_RQ_H_
|
|
#define _VNIC_RQ_H_
|
|
|
|
#include "vnic_dev.h"
|
|
#include "vnic_cq.h"
|
|
|
|
/* Receive queue control */
|
|
struct vnic_rq_ctrl {
|
|
u64 ring_base; /* 0x00 */
|
|
#define RX_RING_BASE 0x00
|
|
u32 ring_size; /* 0x08 */
|
|
#define RX_RING_SIZE 0x08
|
|
u32 pad0;
|
|
u32 posted_index; /* 0x10 */
|
|
#define RX_POSTED_INDEX 0x10
|
|
u32 pad1;
|
|
u32 cq_index; /* 0x18 */
|
|
#define RX_CQ_INDEX 0x18
|
|
u32 pad2;
|
|
u32 enable; /* 0x20 */
|
|
#define RX_ENABLE 0x20
|
|
u32 pad3;
|
|
u32 running; /* 0x28 */
|
|
#define RX_RUNNING 0x28
|
|
u32 pad4;
|
|
u32 fetch_index; /* 0x30 */
|
|
#define RX_FETCH_INDEX 0x30
|
|
u32 pad5;
|
|
u32 error_interrupt_enable; /* 0x38 */
|
|
#define RX_ERROR_INTR_ENABLE 0x38
|
|
u32 pad6;
|
|
u32 error_interrupt_offset; /* 0x40 */
|
|
#define RX_ERROR_INTR_OFFSET 0x40
|
|
u32 pad7;
|
|
u32 error_status; /* 0x48 */
|
|
#define RX_ERROR_STATUS 0x48
|
|
u32 pad8;
|
|
u32 tcp_sn; /* 0x50 */
|
|
#define RX_TCP_SN 0x50
|
|
u32 pad9;
|
|
u32 unused; /* 0x58 */
|
|
u32 pad10;
|
|
u32 dca_select; /* 0x60 */
|
|
#define RX_DCA_SELECT 0x60
|
|
u32 pad11;
|
|
u32 dca_value; /* 0x68 */
|
|
#define RX_DCA_VALUE 0x68
|
|
u32 pad12;
|
|
u32 data_ring; /* 0x70 */
|
|
};
|
|
|
|
struct vnic_rq {
|
|
unsigned int index;
|
|
unsigned int posted_index;
|
|
struct vnic_dev *vdev;
|
|
struct vnic_res *ctrl;
|
|
struct vnic_dev_ring ring;
|
|
int num_free_mbufs;
|
|
struct rte_mbuf **mbuf_ring; /* array of allocated mbufs */
|
|
unsigned int mbuf_next_idx; /* next mb to consume */
|
|
void *os_buf_head;
|
|
unsigned int pkts_outstanding;
|
|
uint16_t rx_nb_hold;
|
|
uint16_t rx_free_thresh;
|
|
unsigned int socket_id;
|
|
struct rte_mempool *mp;
|
|
uint16_t rxst_idx;
|
|
uint32_t tot_pkts;
|
|
uint8_t in_use;
|
|
unsigned int max_mbufs_per_pkt;
|
|
uint16_t tot_nb_desc;
|
|
bool need_initial_post;
|
|
struct iflib_dma_info data;
|
|
};
|
|
|
|
static inline unsigned int vnic_rq_desc_avail(struct vnic_rq *rq)
|
|
{
|
|
/* how many does SW own? */
|
|
return rq->ring.desc_avail;
|
|
}
|
|
|
|
static inline unsigned int vnic_rq_desc_used(struct vnic_rq *rq)
|
|
{
|
|
/* how many does HW own? */
|
|
return rq->ring.desc_count - rq->ring.desc_avail - 1;
|
|
}
|
|
|
|
enum desc_return_options {
|
|
VNIC_RQ_RETURN_DESC,
|
|
VNIC_RQ_DEFER_RETURN_DESC,
|
|
};
|
|
|
|
static inline int vnic_rq_fill(struct vnic_rq *rq,
|
|
int (*buf_fill)(struct vnic_rq *rq))
|
|
{
|
|
int err;
|
|
|
|
while (vnic_rq_desc_avail(rq) > 0) {
|
|
|
|
err = (*buf_fill)(rq);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int vnic_rq_fill_count(struct vnic_rq *rq,
|
|
int (*buf_fill)(struct vnic_rq *rq), unsigned int count)
|
|
{
|
|
int err;
|
|
|
|
while ((vnic_rq_desc_avail(rq) > 0) && (count--)) {
|
|
|
|
err = (*buf_fill)(rq);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void vnic_rq_free(struct vnic_rq *rq);
|
|
void vnic_rq_init_start(struct vnic_rq *rq, unsigned int cq_index,
|
|
unsigned int fetch_index, unsigned int posted_index,
|
|
unsigned int error_interrupt_enable,
|
|
unsigned int error_interrupt_offset);
|
|
void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,
|
|
unsigned int error_interrupt_enable,
|
|
unsigned int error_interrupt_offset);
|
|
void vnic_rq_error_out(struct vnic_rq *rq, unsigned int error);
|
|
unsigned int vnic_rq_error_status(struct vnic_rq *rq);
|
|
void vnic_rq_enable(struct vnic_rq *rq);
|
|
int vnic_rq_disable(struct vnic_rq *rq);
|
|
void vnic_rq_clean(struct vnic_rq *rq);
|
|
|
|
#endif /* _VNIC_RQ_H_ */
|