1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2008-2017 Cisco Systems, Inc. All rights reserved.
3 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
4 */
5
6 #include "enic.h"
7 #include "vnic_dev.h"
8 #include "vnic_cq.h"
9
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 cq_message_enable,unsigned int interrupt_offset,u64 cq_message_addr)10 void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable,
11 unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail,
12 unsigned int cq_tail_color, unsigned int interrupt_enable,
13 unsigned int cq_entry_enable, unsigned int cq_message_enable,
14 unsigned int interrupt_offset, u64 cq_message_addr)
15 {
16 u64 paddr;
17
18 paddr = (u64)cq->ring.base_addr | VNIC_PADDR_TARGET;
19 ENIC_BUS_WRITE_8(cq->ctrl, CQ_RING_BASE, paddr);
20 ENIC_BUS_WRITE_4(cq->ctrl, CQ_RING_SIZE, cq->ring.desc_count);
21 ENIC_BUS_WRITE_4(cq->ctrl, CQ_FLOW_CONTROL_ENABLE, flow_control_enable);
22 ENIC_BUS_WRITE_4(cq->ctrl, CQ_COLOR_ENABLE, color_enable);
23 ENIC_BUS_WRITE_4(cq->ctrl, CQ_HEAD, cq_head);
24 ENIC_BUS_WRITE_4(cq->ctrl, CQ_TAIL, cq_tail);
25 ENIC_BUS_WRITE_4(cq->ctrl, CQ_TAIL_COLOR, cq_tail_color);
26 ENIC_BUS_WRITE_4(cq->ctrl, CQ_INTR_ENABLE, interrupt_enable);
27 ENIC_BUS_WRITE_4(cq->ctrl, CQ_ENTRY_ENABLE, cq_entry_enable);
28 ENIC_BUS_WRITE_4(cq->ctrl, CQ_MESSAGE_ENABLE, cq_message_enable);
29 ENIC_BUS_WRITE_4(cq->ctrl, CQ_INTR_OFFSET, interrupt_offset);
30 ENIC_BUS_WRITE_8(cq->ctrl, CQ_MESSAGE_ADDR, cq_message_addr);
31
32 cq->interrupt_offset = interrupt_offset;
33 }
34
vnic_cq_clean(struct vnic_cq * cq)35 void vnic_cq_clean(struct vnic_cq *cq)
36 {
37 cq->to_clean = 0;
38 cq->last_color = 0;
39
40 ENIC_BUS_WRITE_4(cq->ctrl, CQ_HEAD, 0);
41 ENIC_BUS_WRITE_4(cq->ctrl, CQ_TAIL, 0);
42 ENIC_BUS_WRITE_4(cq->ctrl, CQ_TAIL_COLOR, 1);
43
44 vnic_dev_clear_desc_ring(&cq->ring);
45 }
46