1
2
3
4#include <linux/module.h>
5#include "enetc.h"
6
7#define ENETC_DRV_NAME_STR "ENETC VF driver"
8
9
10static void enetc_msg_vsi_write_msg(struct enetc_hw *hw,
11 struct enetc_msg_swbd *msg)
12{
13 u32 val;
14
15 val = enetc_vsi_set_msize(msg->size) | lower_32_bits(msg->dma);
16 enetc_wr(hw, ENETC_VSIMSGSNDAR1, upper_32_bits(msg->dma));
17 enetc_wr(hw, ENETC_VSIMSGSNDAR0, val);
18}
19
20static int enetc_msg_vsi_send(struct enetc_si *si, struct enetc_msg_swbd *msg)
21{
22 int timeout = 100;
23 u32 vsimsgsr;
24
25 enetc_msg_vsi_write_msg(&si->hw, msg);
26
27 do {
28 vsimsgsr = enetc_rd(&si->hw, ENETC_VSIMSGSR);
29 if (!(vsimsgsr & ENETC_VSIMSGSR_MB))
30 break;
31
32 usleep_range(1000, 2000);
33 } while (--timeout);
34
35 if (!timeout)
36 return -ETIMEDOUT;
37
38
39 if (vsimsgsr & ENETC_VSIMSGSR_MS) {
40 dev_err(&si->pdev->dev, "VSI command execute error: %d\n",
41 ENETC_SIMSGSR_GET_MC(vsimsgsr));
42 return -EIO;
43 }
44
45 return 0;
46}
47
48static int enetc_msg_vsi_set_primary_mac_addr(struct enetc_ndev_priv *priv,
49 struct sockaddr *saddr)
50{
51 struct enetc_msg_cmd_set_primary_mac *cmd;
52 struct enetc_msg_swbd msg;
53 int err;
54
55 msg.size = ALIGN(sizeof(struct enetc_msg_cmd_set_primary_mac), 64);
56 msg.vaddr = dma_alloc_coherent(priv->dev, msg.size, &msg.dma,
57 GFP_KERNEL);
58 if (!msg.vaddr) {
59 dev_err(priv->dev, "Failed to alloc Tx msg (size: %d)\n",
60 msg.size);
61 return -ENOMEM;
62 }
63
64 cmd = (struct enetc_msg_cmd_set_primary_mac *)msg.vaddr;
65 cmd->header.type = ENETC_MSG_CMD_MNG_MAC;
66 cmd->header.id = ENETC_MSG_CMD_MNG_ADD;
67 memcpy(&cmd->mac, saddr, sizeof(struct sockaddr));
68
69
70 err = enetc_msg_vsi_send(priv->si, &msg);
71
72 dma_free_coherent(priv->dev, msg.size, msg.vaddr, msg.dma);
73
74 return err;
75}
76
77static int enetc_vf_set_mac_addr(struct net_device *ndev, void *addr)
78{
79 struct enetc_ndev_priv *priv = netdev_priv(ndev);
80 struct sockaddr *saddr = addr;
81
82 if (!is_valid_ether_addr(saddr->sa_data))
83 return -EADDRNOTAVAIL;
84
85 return enetc_msg_vsi_set_primary_mac_addr(priv, saddr);
86}
87
88static int enetc_vf_set_features(struct net_device *ndev,
89 netdev_features_t features)
90{
91 return enetc_set_features(ndev, features);
92}
93
94
95static const struct net_device_ops enetc_ndev_ops = {
96 .ndo_open = enetc_open,
97 .ndo_stop = enetc_close,
98 .ndo_start_xmit = enetc_xmit,
99 .ndo_get_stats = enetc_get_stats,
100 .ndo_set_mac_address = enetc_vf_set_mac_addr,
101 .ndo_set_features = enetc_vf_set_features,
102 .ndo_do_ioctl = enetc_ioctl,
103 .ndo_setup_tc = enetc_setup_tc,
104};
105
106static void enetc_vf_netdev_setup(struct enetc_si *si, struct net_device *ndev,
107 const struct net_device_ops *ndev_ops)
108{
109 struct enetc_ndev_priv *priv = netdev_priv(ndev);
110
111 SET_NETDEV_DEV(ndev, &si->pdev->dev);
112 priv->ndev = ndev;
113 priv->si = si;
114 priv->dev = &si->pdev->dev;
115 si->ndev = ndev;
116
117 priv->msg_enable = (NETIF_MSG_IFUP << 1) - 1;
118 ndev->netdev_ops = ndev_ops;
119 enetc_set_ethtool_ops(ndev);
120 ndev->watchdog_timeo = 5 * HZ;
121 ndev->max_mtu = ENETC_MAX_MTU;
122
123 ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM |
124 NETIF_F_HW_VLAN_CTAG_TX |
125 NETIF_F_HW_VLAN_CTAG_RX;
126 ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG | NETIF_F_RXCSUM |
127 NETIF_F_HW_VLAN_CTAG_TX |
128 NETIF_F_HW_VLAN_CTAG_RX;
129
130 if (si->num_rss)
131 ndev->hw_features |= NETIF_F_RXHASH;
132
133
134 enetc_get_primary_mac_addr(&si->hw, ndev->dev_addr);
135}
136
137static int enetc_vf_probe(struct pci_dev *pdev,
138 const struct pci_device_id *ent)
139{
140 struct enetc_ndev_priv *priv;
141 struct net_device *ndev;
142 struct enetc_si *si;
143 int err;
144
145 err = enetc_pci_probe(pdev, KBUILD_MODNAME, 0);
146 if (err) {
147 dev_err(&pdev->dev, "PCI probing failed\n");
148 return err;
149 }
150
151 si = pci_get_drvdata(pdev);
152
153 enetc_get_si_caps(si);
154
155 ndev = alloc_etherdev_mq(sizeof(*priv), ENETC_MAX_NUM_TXQS);
156 if (!ndev) {
157 err = -ENOMEM;
158 dev_err(&pdev->dev, "netdev creation failed\n");
159 goto err_alloc_netdev;
160 }
161
162 enetc_vf_netdev_setup(si, ndev, &enetc_ndev_ops);
163
164 priv = netdev_priv(ndev);
165
166 enetc_init_si_rings_params(priv);
167
168 err = enetc_setup_cbdr(priv->dev, &si->hw, ENETC_CBDR_DEFAULT_SIZE,
169 &si->cbd_ring);
170 if (err)
171 goto err_setup_cbdr;
172
173 err = enetc_alloc_si_resources(priv);
174 if (err) {
175 dev_err(&pdev->dev, "SI resource alloc failed\n");
176 goto err_alloc_si_res;
177 }
178
179 err = enetc_configure_si(priv);
180 if (err) {
181 dev_err(&pdev->dev, "Failed to configure SI\n");
182 goto err_config_si;
183 }
184
185 err = enetc_alloc_msix(priv);
186 if (err) {
187 dev_err(&pdev->dev, "MSIX alloc failed\n");
188 goto err_alloc_msix;
189 }
190
191 err = register_netdev(ndev);
192 if (err)
193 goto err_reg_netdev;
194
195 netif_carrier_off(ndev);
196
197 return 0;
198
199err_reg_netdev:
200 enetc_free_msix(priv);
201err_config_si:
202err_alloc_msix:
203 enetc_free_si_resources(priv);
204err_alloc_si_res:
205 enetc_teardown_cbdr(&si->cbd_ring);
206err_setup_cbdr:
207 si->ndev = NULL;
208 free_netdev(ndev);
209err_alloc_netdev:
210 enetc_pci_remove(pdev);
211
212 return err;
213}
214
215static void enetc_vf_remove(struct pci_dev *pdev)
216{
217 struct enetc_si *si = pci_get_drvdata(pdev);
218 struct enetc_ndev_priv *priv;
219
220 priv = netdev_priv(si->ndev);
221 unregister_netdev(si->ndev);
222
223 enetc_free_msix(priv);
224
225 enetc_free_si_resources(priv);
226 enetc_teardown_cbdr(&si->cbd_ring);
227
228 free_netdev(si->ndev);
229
230 enetc_pci_remove(pdev);
231}
232
233static const struct pci_device_id enetc_vf_id_table[] = {
234 { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, ENETC_DEV_ID_VF) },
235 { 0, }
236};
237MODULE_DEVICE_TABLE(pci, enetc_vf_id_table);
238
239static struct pci_driver enetc_vf_driver = {
240 .name = KBUILD_MODNAME,
241 .id_table = enetc_vf_id_table,
242 .probe = enetc_vf_probe,
243 .remove = enetc_vf_remove,
244};
245module_pci_driver(enetc_vf_driver);
246
247MODULE_DESCRIPTION(ENETC_DRV_NAME_STR);
248MODULE_LICENSE("Dual BSD/GPL");
249
