diff options
Diffstat (limited to 'sys/dev/enic/vnic_cq.h')
| -rw-r--r-- | sys/dev/enic/vnic_cq.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/sys/dev/enic/vnic_cq.h b/sys/dev/enic/vnic_cq.h new file mode 100644 index 000000000000..26f9009612c5 --- /dev/null +++ b/sys/dev/enic/vnic_cq.h @@ -0,0 +1,164 @@ +/* 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_CQ_H_ +#define _VNIC_CQ_H_ + +#include "cq_desc.h" +#include "vnic_dev.h" + +/* Completion queue control */ +struct vnic_cq_ctrl { + u64 ring_base; /* 0x00 */ +#define CQ_RING_BASE 0x00 + u32 ring_size; /* 0x08 */ +#define CQ_RING_SIZE 0x08 + u32 pad0; + u32 flow_control_enable; /* 0x10 */ +#define CQ_FLOW_CONTROL_ENABLE 0x10 + u32 pad1; + u32 color_enable; /* 0x18 */ +#define CQ_COLOR_ENABLE 0x18 + u32 pad2; + u32 cq_head; /* 0x20 */ +#define CQ_HEAD 0x20 + u32 pad3; + u32 cq_tail; /* 0x28 */ +#define CQ_TAIL 0x28 + u32 pad4; + u32 cq_tail_color; /* 0x30 */ +#define CQ_TAIL_COLOR 0x30 + u32 pad5; + u32 interrupt_enable; /* 0x38 */ +#define CQ_INTR_ENABLE 0x38 + u32 pad6; + u32 cq_entry_enable; /* 0x40 */ +#define CQ_ENTRY_ENABLE 0x40 + u32 pad7; + u32 cq_message_enable; /* 0x48 */ +#define CQ_MESSAGE_ENABLE 0x48 + u32 pad8; + u32 interrupt_offset; /* 0x50 */ +#define CQ_INTR_OFFSET 0x50 + u32 pad9; + u64 cq_message_addr; /* 0x58 */ +#define CQ_MESSAGE_ADDR 0x58 + u32 pad10; +}; + +#ifdef ENIC_AIC +struct vnic_rx_bytes_counter { + unsigned int small_pkt_bytes_cnt; + unsigned int large_pkt_bytes_cnt; +}; +#endif + +struct vnic_cq { + unsigned int index; + struct vnic_dev *vdev; + struct vnic_res *ctrl; + struct vnic_dev_ring ring; + unsigned int to_clean; + unsigned int last_color; + unsigned int interrupt_offset; +#ifdef ENIC_AIC + struct vnic_rx_bytes_counter pkt_size_counter; + unsigned int cur_rx_coal_timeval; + unsigned int tobe_rx_coal_timeval; + ktime_t prev_ts; +#endif + int ntxqsets; + int nrxqsets; + int ntxqsets_start; + int nrxqsets_start; +}; + +void vnic_cq_free(struct vnic_cq *cq); +void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable, + unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail, + unsigned int cq_tail_color, unsigned int interrupt_enable, + unsigned int cq_entry_enable, unsigned int message_enable, + unsigned int interrupt_offset, u64 message_addr); +void vnic_cq_clean(struct vnic_cq *cq); +int vnic_cq_mem_size(struct vnic_cq *cq, unsigned int desc_count, + unsigned int desc_size); + +static inline unsigned int vnic_cq_service(struct vnic_cq *cq, + unsigned int work_to_do, + int (*q_service)(struct vnic_dev *vdev, struct cq_desc *cq_desc, + u8 type, u16 q_number, u16 completed_index, void *opaque), + void *opaque) +{ + struct cq_desc *cq_desc; + unsigned int work_done = 0; + u16 q_number, completed_index; + u8 type, color; + + cq_desc = (struct cq_desc *)((u8 *)cq->ring.descs + + cq->ring.desc_size * cq->to_clean); + cq_desc_dec(cq_desc, &type, &color, + &q_number, &completed_index); + + while (color != cq->last_color) { + if ((*q_service)(cq->vdev, cq_desc, type, + q_number, completed_index, opaque)) + break; + + cq->to_clean++; + if (cq->to_clean == cq->ring.desc_count) { + cq->to_clean = 0; + cq->last_color = cq->last_color ? 0 : 1; + } + + cq_desc = (struct cq_desc *)((u8 *)cq->ring.descs + + cq->ring.desc_size * cq->to_clean); + cq_desc_dec(cq_desc, &type, &color, + &q_number, &completed_index); + + work_done++; + if (work_done >= work_to_do) + break; + } + + return work_done; +} + +static inline unsigned int vnic_cq_work(struct vnic_cq *cq, + unsigned int work_to_do) +{ + struct cq_desc *cq_desc; + unsigned int work_avail = 0; + u16 q_number, completed_index; + u8 type, color; + u32 to_clean, last_color; + + to_clean = cq->to_clean; + last_color = cq->last_color; + cq_desc = (struct cq_desc *)((u8 *)cq->ring.descs + + cq->ring.desc_size * to_clean); + cq_desc_dec(cq_desc, &type, &color, + &q_number, &completed_index); + + while (color != last_color) { + to_clean++; + if (to_clean == cq->ring.desc_count) { + to_clean = 0; + last_color = last_color ? 0 : 1; + } + + cq_desc = (struct cq_desc *)((u8 *)cq->ring.descs + + cq->ring.desc_size * to_clean); + cq_desc_dec(cq_desc, &type, &color, + &q_number, &completed_index); + + work_avail++; + if (work_avail >= work_to_do) + break; + } + + return work_avail; +} + +#endif /* _VNIC_CQ_H_ */ |