1// SPDX-License-Identifier: GPL-2.0-only
2/* Copyright (C) 2023 Intel Corporation */
3
4#include "idpf.h"
5#include "idpf_lan_vf_regs.h"
6#include "idpf_virtchnl.h"
7
8#define IDPF_VF_ITR_IDX_SPACING 0x40
9
10/**
11 * idpf_vf_ctlq_reg_init - initialize default mailbox registers
12 * @cq: pointer to the array of create control queues
13 */
14static void idpf_vf_ctlq_reg_init(struct idpf_ctlq_create_info *cq)
15{
16 int i;
17
18 for (i = 0; i < IDPF_NUM_DFLT_MBX_Q; i++) {
19 struct idpf_ctlq_create_info *ccq = cq + i;
20
21 switch (ccq->type) {
22 case IDPF_CTLQ_TYPE_MAILBOX_TX:
23 /* set head and tail registers in our local struct */
24 ccq->reg.head = VF_ATQH;
25 ccq->reg.tail = VF_ATQT;
26 ccq->reg.len = VF_ATQLEN;
27 ccq->reg.bah = VF_ATQBAH;
28 ccq->reg.bal = VF_ATQBAL;
29 ccq->reg.len_mask = VF_ATQLEN_ATQLEN_M;
30 ccq->reg.len_ena_mask = VF_ATQLEN_ATQENABLE_M;
31 ccq->reg.head_mask = VF_ATQH_ATQH_M;
32 break;
33 case IDPF_CTLQ_TYPE_MAILBOX_RX:
34 /* set head and tail registers in our local struct */
35 ccq->reg.head = VF_ARQH;
36 ccq->reg.tail = VF_ARQT;
37 ccq->reg.len = VF_ARQLEN;
38 ccq->reg.bah = VF_ARQBAH;
39 ccq->reg.bal = VF_ARQBAL;
40 ccq->reg.len_mask = VF_ARQLEN_ARQLEN_M;
41 ccq->reg.len_ena_mask = VF_ARQLEN_ARQENABLE_M;
42 ccq->reg.head_mask = VF_ARQH_ARQH_M;
43 break;
44 default:
45 break;
46 }
47 }
48}
49
50/**
51 * idpf_vf_mb_intr_reg_init - Initialize the mailbox register
52 * @adapter: adapter structure
53 */
54static void idpf_vf_mb_intr_reg_init(struct idpf_adapter *adapter)
55{
56 struct idpf_intr_reg *intr = &adapter->mb_vector.intr_reg;
57 u32 dyn_ctl = le32_to_cpu(adapter->caps.mailbox_dyn_ctl);
58
59 intr->dyn_ctl = idpf_get_reg_addr(adapter, reg_offset: dyn_ctl);
60 intr->dyn_ctl_intena_m = VF_INT_DYN_CTL0_INTENA_M;
61 intr->dyn_ctl_itridx_m = VF_INT_DYN_CTL0_ITR_INDX_M;
62 intr->icr_ena = idpf_get_reg_addr(adapter, VF_INT_ICR0_ENA1);
63 intr->icr_ena_ctlq_m = VF_INT_ICR0_ENA1_ADMINQ_M;
64}
65
66/**
67 * idpf_vf_intr_reg_init - Initialize interrupt registers
68 * @vport: virtual port structure
69 */
70static int idpf_vf_intr_reg_init(struct idpf_vport *vport)
71{
72 struct idpf_adapter *adapter = vport->adapter;
73 int num_vecs = vport->num_q_vectors;
74 struct idpf_vec_regs *reg_vals;
75 int num_regs, i, err = 0;
76 u32 rx_itr, tx_itr;
77 u16 total_vecs;
78
79 total_vecs = idpf_get_reserved_vecs(adapter: vport->adapter);
80 reg_vals = kcalloc(n: total_vecs, size: sizeof(struct idpf_vec_regs),
81 GFP_KERNEL);
82 if (!reg_vals)
83 return -ENOMEM;
84
85 num_regs = idpf_get_reg_intr_vecs(vport, reg_vals);
86 if (num_regs < num_vecs) {
87 err = -EINVAL;
88 goto free_reg_vals;
89 }
90
91 for (i = 0; i < num_vecs; i++) {
92 struct idpf_q_vector *q_vector = &vport->q_vectors[i];
93 u16 vec_id = vport->q_vector_idxs[i] - IDPF_MBX_Q_VEC;
94 struct idpf_intr_reg *intr = &q_vector->intr_reg;
95 u32 spacing;
96
97 intr->dyn_ctl = idpf_get_reg_addr(adapter,
98 reg_offset: reg_vals[vec_id].dyn_ctl_reg);
99 intr->dyn_ctl_intena_m = VF_INT_DYN_CTLN_INTENA_M;
100 intr->dyn_ctl_itridx_s = VF_INT_DYN_CTLN_ITR_INDX_S;
101
102 spacing = IDPF_ITR_IDX_SPACING(reg_vals[vec_id].itrn_index_spacing,
103 IDPF_VF_ITR_IDX_SPACING);
104 rx_itr = VF_INT_ITRN_ADDR(VIRTCHNL2_ITR_IDX_0,
105 reg_vals[vec_id].itrn_reg,
106 spacing);
107 tx_itr = VF_INT_ITRN_ADDR(VIRTCHNL2_ITR_IDX_1,
108 reg_vals[vec_id].itrn_reg,
109 spacing);
110 intr->rx_itr = idpf_get_reg_addr(adapter, reg_offset: rx_itr);
111 intr->tx_itr = idpf_get_reg_addr(adapter, reg_offset: tx_itr);
112 }
113
114free_reg_vals:
115 kfree(objp: reg_vals);
116
117 return err;
118}
119
120/**
121 * idpf_vf_reset_reg_init - Initialize reset registers
122 * @adapter: Driver specific private structure
123 */
124static void idpf_vf_reset_reg_init(struct idpf_adapter *adapter)
125{
126 adapter->reset_reg.rstat = idpf_get_reg_addr(adapter, VFGEN_RSTAT);
127 adapter->reset_reg.rstat_m = VFGEN_RSTAT_VFR_STATE_M;
128}
129
130/**
131 * idpf_vf_trigger_reset - trigger reset
132 * @adapter: Driver specific private structure
133 * @trig_cause: Reason to trigger a reset
134 */
135static void idpf_vf_trigger_reset(struct idpf_adapter *adapter,
136 enum idpf_flags trig_cause)
137{
138 /* Do not send VIRTCHNL2_OP_RESET_VF message on driver unload */
139 if (trig_cause == IDPF_HR_FUNC_RESET &&
140 !test_bit(IDPF_REMOVE_IN_PROG, adapter->flags))
141 idpf_send_mb_msg(adapter, op: VIRTCHNL2_OP_RESET_VF, msg_size: 0, NULL, cookie: 0);
142}
143
144/**
145 * idpf_vf_reg_ops_init - Initialize register API function pointers
146 * @adapter: Driver specific private structure
147 */
148static void idpf_vf_reg_ops_init(struct idpf_adapter *adapter)
149{
150 adapter->dev_ops.reg_ops.ctlq_reg_init = idpf_vf_ctlq_reg_init;
151 adapter->dev_ops.reg_ops.intr_reg_init = idpf_vf_intr_reg_init;
152 adapter->dev_ops.reg_ops.mb_intr_reg_init = idpf_vf_mb_intr_reg_init;
153 adapter->dev_ops.reg_ops.reset_reg_init = idpf_vf_reset_reg_init;
154 adapter->dev_ops.reg_ops.trigger_reset = idpf_vf_trigger_reset;
155}
156
157/**
158 * idpf_vf_dev_ops_init - Initialize device API function pointers
159 * @adapter: Driver specific private structure
160 */
161void idpf_vf_dev_ops_init(struct idpf_adapter *adapter)
162{
163 idpf_vf_reg_ops_init(adapter);
164}
165

source code of linux/drivers/net/ethernet/intel/idpf/idpf_vf_dev.c