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 "enic_compat.h"
8 #include "wq_enet_desc.h"
9 #include "rq_enet_desc.h"
10 #include "cq_enet_desc.h"
11 #include "vnic_resource.h"
12 #include "vnic_enet.h"
13 #include "vnic_dev.h"
14 #include "vnic_wq.h"
15 #include "vnic_rq.h"
16 #include "vnic_cq.h"
17 #include "vnic_intr.h"
18 #include "vnic_stats.h"
19 #include "vnic_nic.h"
20 #include "vnic_rss.h"
21 #include "enic_res.h"
22 #include "enic.h"
23
enic_get_vnic_config(struct enic * enic)24 int enic_get_vnic_config(struct enic *enic)
25 {
26 struct vnic_enet_config *c = &enic->config;
27 int err;
28 err = vnic_dev_get_mac_addr(enic->vdev, enic->mac_addr);
29 if (err) {
30 dev_err(enic_get_dev(enic),
31 "Error getting MAC addr, %d\n", err);
32 return err;
33 }
34
35 #define GET_CONFIG(m) \
36 do { \
37 err = vnic_dev_spec(enic->vdev, \
38 offsetof(struct vnic_enet_config, m), \
39 sizeof(c->m), &c->m); \
40 if (err) { \
41 dev_err(enic_get_dev(enic), \
42 "Error getting %s, %d\n", #m, err); \
43 return err; \
44 } \
45 } while (0)
46
47 GET_CONFIG(flags);
48 GET_CONFIG(wq_desc_count);
49 GET_CONFIG(rq_desc_count);
50 GET_CONFIG(mtu);
51 GET_CONFIG(intr_timer_type);
52 GET_CONFIG(intr_mode);
53 GET_CONFIG(intr_timer_usec);
54 GET_CONFIG(loop_tag);
55 GET_CONFIG(num_arfs);
56 GET_CONFIG(max_pkt_size);
57
58 /* max packet size is only defined in newer VIC firmware
59 * and will be 0 for legacy firmware and VICs
60 */
61 if (c->max_pkt_size > ENIC_DEFAULT_RX_MAX_PKT_SIZE)
62 enic->max_mtu = c->max_pkt_size - (ETHER_HDR_LEN + 4);
63 else
64 enic->max_mtu = ENIC_DEFAULT_RX_MAX_PKT_SIZE
65 - (ETHER_HDR_LEN + 4);
66 if (c->mtu == 0)
67 c->mtu = 1500;
68
69 enic->adv_filters = vnic_dev_capable_adv_filters(enic->vdev);
70
71 err = vnic_dev_capable_filter_mode(enic->vdev, &enic->flow_filter_mode,
72 &enic->filter_actions);
73 if (err) {
74 dev_err(enic_get_dev(enic),
75 "Error getting filter modes, %d\n", err);
76 return err;
77 }
78 vnic_dev_capable_udp_rss_weak(enic->vdev, &enic->nic_cfg_chk,
79 &enic->udp_rss_weak);
80
81 c->wq_desc_count =
82 min_t(u32, ENIC_MAX_WQ_DESCS,
83 max_t(u32, ENIC_MIN_WQ_DESCS,
84 c->wq_desc_count));
85 c->wq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */
86
87 c->rq_desc_count =
88 min_t(u32, ENIC_MAX_RQ_DESCS,
89 max_t(u32, ENIC_MIN_RQ_DESCS,
90 c->rq_desc_count));
91 c->rq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */
92
93 c->intr_timer_usec = min_t(u32, c->intr_timer_usec,
94 vnic_dev_get_intr_coal_timer_max(enic->vdev));
95
96 dev_info(enic_get_dev(enic),
97 "vNIC MAC addr %02x:%02x:%02x:%02x:%02x:%02x "
98 "wq/rq %d/%d mtu %d, max mtu:%d\n",
99 enic->mac_addr[0], enic->mac_addr[1], enic->mac_addr[2],
100 enic->mac_addr[3], enic->mac_addr[4], enic->mac_addr[5],
101 c->wq_desc_count, c->rq_desc_count,
102 c->mtu, enic->max_mtu);
103 dev_info(enic_get_dev(enic), "vNIC csum tx/rx %s/%s "
104 "rss %s intr mode %s type %s timer %d usec "
105 "loopback tag 0x%04x\n",
106 ENIC_SETTING(enic, TXCSUM) ? "yes" : "no",
107 ENIC_SETTING(enic, RXCSUM) ? "yes" : "no",
108 ENIC_SETTING(enic, RSS) ?
109 (ENIC_SETTING(enic, RSSHASH_UDPIPV4) ? "+UDP" :
110 ((enic->udp_rss_weak ? "+udp" :
111 "yes"))) : "no",
112 c->intr_mode == VENET_INTR_MODE_INTX ? "INTx" :
113 c->intr_mode == VENET_INTR_MODE_MSI ? "MSI" :
114 c->intr_mode == VENET_INTR_MODE_ANY ? "any" :
115 "unknown",
116 c->intr_timer_type == VENET_INTR_TYPE_MIN ? "min" :
117 c->intr_timer_type == VENET_INTR_TYPE_IDLE ? "idle" :
118 "unknown",
119 c->intr_timer_usec,
120 c->loop_tag);
121
122 /* RSS settings from vNIC */
123 enic->reta_size = ENIC_RSS_RETA_SIZE;
124 enic->hash_key_size = ENIC_RSS_HASH_KEY_SIZE;
125 enic->flow_type_rss_offloads = 0;
126
127 /* Zero offloads if RSS is not enabled */
128 if (!ENIC_SETTING(enic, RSS))
129 enic->flow_type_rss_offloads = 0;
130
131 enic->vxlan = ENIC_SETTING(enic, VXLAN) &&
132 vnic_dev_capable_vxlan(enic->vdev);
133 /*
134 * Default hardware capabilities. enic_dev_init() may add additional
135 * flags if it enables overlay offloads.
136 */
137 enic->tx_queue_offload_capa = 0;
138 return 0;
139 }
140
enic_add_vlan(struct enic * enic,u16 vlanid)141 int enic_add_vlan(struct enic *enic, u16 vlanid)
142 {
143 u64 a0 = vlanid, a1 = 0;
144 int wait = 1000;
145 int err;
146
147 err = vnic_dev_cmd(enic->vdev, CMD_VLAN_ADD, &a0, &a1, wait);
148 if (err)
149 dev_err(enic_get_dev(enic), "Can't add vlan id, %d\n", err);
150
151 return err;
152 }
153
enic_del_vlan(struct enic * enic,u16 vlanid)154 int enic_del_vlan(struct enic *enic, u16 vlanid)
155 {
156 u64 a0 = vlanid, a1 = 0;
157 int wait = 1000;
158 int err;
159
160 err = vnic_dev_cmd(enic->vdev, CMD_VLAN_DEL, &a0, &a1, wait);
161 if (err)
162 dev_err(enic_get_dev(enic), "Can't delete vlan id, %d\n", err);
163
164 return err;
165 }
166
enic_set_nic_cfg(struct enic * enic,u8 rss_default_cpu,u8 rss_hash_type,u8 rss_hash_bits,u8 rss_base_cpu,u8 rss_enable,u8 tso_ipid_split_en,u8 ig_vlan_strip_en)167 int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type,
168 u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en,
169 u8 ig_vlan_strip_en)
170 {
171 enum vnic_devcmd_cmd cmd;
172 u64 a0, a1;
173 u32 nic_cfg;
174 int wait = 1000;
175
176 vnic_set_nic_cfg(&nic_cfg, rss_default_cpu,
177 rss_hash_type, rss_hash_bits, rss_base_cpu,
178 rss_enable, tso_ipid_split_en, ig_vlan_strip_en);
179
180 a0 = nic_cfg;
181 a1 = 0;
182 cmd = enic->nic_cfg_chk ? CMD_NIC_CFG_CHK : CMD_NIC_CFG;
183 return vnic_dev_cmd(enic->vdev, cmd, &a0, &a1, wait);
184 }
185
enic_get_res_counts(struct enic * enic)186 void enic_get_res_counts(struct enic *enic)
187 {
188 enic->conf_wq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_WQ);
189 enic->conf_rq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_RQ);
190 enic->conf_cq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_CQ);
191 enic->conf_intr_count = vnic_dev_get_res_count(enic->vdev,
192 RES_TYPE_INTR_CTRL);
193
194 dev_info(enic_get_dev(enic),
195 "vNIC resources avail: wq %d rq %d cq %d intr %d\n",
196 enic->conf_wq_count, enic->conf_rq_count,
197 enic->conf_cq_count, enic->conf_intr_count);
198 enic->conf_rq_count = min(enic->conf_rq_count, enic->conf_wq_count);
199 enic->conf_wq_count = enic->conf_rq_count;
200 enic->conf_cq_count = enic->conf_rq_count + enic->conf_wq_count;
201 dev_info(enic_get_dev(enic),
202 "vNIC resources iflib: wq %d rq %d cq %d intr %d\n",
203 enic->conf_wq_count, enic->conf_rq_count,
204 enic->conf_cq_count, enic->conf_intr_count);
205 dev_info(enic_get_dev(enic),
206 "vNIC resources avail: wq_desc %d rq_desc %d\n",
207 enic->config.wq_desc_count, enic->config.rq_desc_count);
208
209 enic->wq_count = enic->conf_wq_count;
210 enic->rq_count = enic->conf_rq_count;
211 enic->cq_count = enic->conf_cq_count;
212 }
213