1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2018 Chelsio Communications.
6 #include <rte_ethdev_driver.h>
7 #include <rte_ethdev_pci.h>
8 #include <rte_malloc.h>
16 * Figure out how many Ports and Queue Sets we can support. This depends on
17 * knowing our Virtual Function Resources and may be called a second time if
18 * we fall back from MSI-X to MSI Interrupt Mode.
20 static void size_nports_qsets(struct adapter *adapter)
22 struct vf_resources *vfres = &adapter->params.vfres;
23 unsigned int pmask_nports;
26 * The number of "ports" which we support is equal to the number of
27 * Virtual Interfaces with which we've been provisioned.
29 adapter->params.nports = vfres->nvi;
30 if (adapter->params.nports > MAX_NPORTS) {
31 dev_warn(adapter->pdev_dev, "only using %d of %d maximum"
32 " allowed virtual interfaces\n", MAX_NPORTS,
33 adapter->params.nports);
34 adapter->params.nports = MAX_NPORTS;
38 * We may have been provisioned with more VIs than the number of
39 * ports we're allowed to access (our Port Access Rights Mask).
40 * This is obviously a configuration conflict but we don't want to
41 * do anything silly just because of that.
43 pmask_nports = hweight32(adapter->params.vfres.pmask);
44 if (pmask_nports < adapter->params.nports) {
45 dev_warn(adapter->pdev_dev, "only using %d of %d provissioned"
46 " virtual interfaces; limited by Port Access Rights"
47 " mask %#x\n", pmask_nports, adapter->params.nports,
48 adapter->params.vfres.pmask);
49 adapter->params.nports = pmask_nports;
52 configure_max_ethqsets(adapter);
53 if (adapter->sge.max_ethqsets < adapter->params.nports) {
54 dev_warn(adapter->pdev_dev, "only using %d of %d available"
55 " virtual interfaces (too few Queue Sets)\n",
56 adapter->sge.max_ethqsets, adapter->params.nports);
57 adapter->params.nports = adapter->sge.max_ethqsets;
61 void cxgbevf_stats_get(struct port_info *pi, struct port_stats *stats)
63 t4vf_get_port_stats(pi->adapter, pi->pidx, stats);
66 static int adap_init0vf(struct adapter *adapter)
71 err = t4vf_fw_reset(adapter);
73 dev_err(adapter->pdev_dev, "FW reset failed: err=%d\n", err);
78 * Grab basic operational parameters. These will predominantly have
79 * been set up by the Physical Function Driver or will be hard coded
80 * into the adapter. We just have to live with them ... Note that
81 * we _must_ get our VPD parameters before our SGE parameters because
82 * we need to know the adapter's core clock from the VPD in order to
83 * properly decode the SGE Timer Values.
85 err = t4vf_get_dev_params(adapter);
87 dev_err(adapter->pdev_dev, "unable to retrieve adapter"
88 " device parameters: err=%d\n", err);
92 err = t4vf_get_vpd_params(adapter);
94 dev_err(adapter->pdev_dev, "unable to retrieve adapter"
95 " VPD parameters: err=%d\n", err);
99 adapter->pf = t4vf_get_pf_from_vf(adapter);
100 err = t4vf_sge_init(adapter);
102 dev_err(adapter->pdev_dev, "error in sge init\n");
106 err = t4vf_get_rss_glb_config(adapter);
108 dev_err(adapter->pdev_dev, "unable to retrieve adapter"
109 " RSS parameters: err=%d\n", err);
112 if (adapter->params.rss.mode !=
113 FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL) {
114 dev_err(adapter->pdev_dev, "unable to operate with global RSS"
115 " mode %d\n", adapter->params.rss.mode);
119 /* If we're running on newer firmware, let it know that we're
120 * prepared to deal with encapsulated CPL messages. Older
121 * firmware won't understand this and we'll just get
122 * unencapsulated messages ...
124 param = V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_PFVF) |
125 V_FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_PFVF_CPLFW4MSG_ENCAP);
127 t4vf_set_params(adapter, 1, ¶m, &val);
130 * Grab our Virtual Interface resource allocation, extract the
131 * features that we're interested in and do a bit of sanity testing on
134 err = t4vf_get_vfres(adapter);
136 dev_err(adapter->pdev_dev, "unable to get virtual interface"
137 " resources: err=%d\n", err);
142 * Check for various parameter sanity issues.
144 if (adapter->params.vfres.pmask == 0) {
145 dev_err(adapter->pdev_dev, "no port access configured\n"
149 if (adapter->params.vfres.nvi == 0) {
150 dev_err(adapter->pdev_dev, "no virtual interfaces configured/"
156 * Initialize nports and max_ethqsets now that we have our Virtual
157 * Function Resources.
159 size_nports_qsets(adapter);
160 adapter->flags |= FW_OK;
164 int cxgbevf_probe(struct adapter *adapter)
166 struct port_info *pi;
171 t4_os_lock_init(&adapter->mbox_lock);
172 TAILQ_INIT(&adapter->mbox_list);
173 err = t4vf_prep_adapter(adapter);
177 if (!is_t4(adapter->params.chip)) {
178 adapter->bar2 = (void *)adapter->pdev->mem_resource[2].addr;
179 if (!adapter->bar2) {
180 dev_err(adapter, "cannot map device bar2 region\n");
186 err = adap_init0vf(adapter);
188 dev_err(adapter, "%s: Adapter initialization failed, error %d\n",
193 pmask = adapter->params.vfres.pmask;
194 for_each_port(adapter, i) {
195 const unsigned int numa_node = rte_socket_id();
196 char name[RTE_ETH_NAME_MAX_LEN];
197 struct rte_eth_dev *eth_dev;
202 port_id = ffs(pmask) - 1;
203 pmask &= ~(1 << port_id);
205 snprintf(name, sizeof(name), "%s_%d",
206 adapter->pdev->device.name, i);
209 /* First port is already allocated by DPDK */
210 eth_dev = adapter->eth_dev;
215 * now do all data allocation - for eth_dev structure,
216 * and internal (private) data for the remaining ports
219 /* reserve an ethdev entry */
220 eth_dev = rte_eth_dev_allocate(name);
225 eth_dev->data->dev_private =
226 rte_zmalloc_socket(name, sizeof(struct port_info),
227 RTE_CACHE_LINE_SIZE, numa_node);
228 if (!eth_dev->data->dev_private)
232 pi = (struct port_info *)eth_dev->data->dev_private;
233 adapter->port[i] = pi;
234 pi->eth_dev = eth_dev;
235 pi->adapter = adapter;
236 pi->xact_addr_filt = -1;
237 pi->port_id = port_id;
240 pi->eth_dev->device = &adapter->pdev->device;
241 pi->eth_dev->dev_ops = adapter->eth_dev->dev_ops;
242 pi->eth_dev->tx_pkt_burst = adapter->eth_dev->tx_pkt_burst;
243 pi->eth_dev->rx_pkt_burst = adapter->eth_dev->rx_pkt_burst;
245 rte_eth_copy_pci_info(pi->eth_dev, adapter->pdev);
246 pi->eth_dev->data->mac_addrs = rte_zmalloc(name,
248 if (!pi->eth_dev->data->mac_addrs) {
249 dev_err(adapter, "%s: Mem allocation failed for storing mac addr, aborting\n",
256 /* First port will be notified by upper layer */
257 rte_eth_dev_probing_finish(eth_dev);
261 if (adapter->flags & FW_OK) {
262 err = t4vf_port_init(adapter);
264 dev_err(adapter, "%s: t4_port_init failed with err %d\n",
270 cfg_queues(adapter->eth_dev);
271 print_adapter_info(adapter);
272 print_port_info(adapter);
274 err = init_rss(adapter);
280 for_each_port(adapter, i) {
281 pi = adap2pinfo(adapter, i);
283 t4_free_vi(adapter, adapter->mbox, adapter->pf,
285 /* Skip first port since it'll be de-allocated by DPDK */
289 if (pi->eth_dev->data->dev_private)
290 rte_free(pi->eth_dev->data->dev_private);
291 rte_eth_dev_release_port(pi->eth_dev);