1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
2 /*
3 * Copyright 2021-2022 Innovative Advantage Inc.
4 */
5
6 #include <linux/mfd/ocelot.h>
7 #include <linux/platform_device.h>
8 #include <linux/regmap.h>
9 #include <soc/mscc/ocelot.h>
10 #include <soc/mscc/vsc7514_regs.h>
11 #include "felix.h"
12
13 #define VSC7514_NUM_PORTS 11
14
15 #define OCELOT_PORT_MODE_SERDES (OCELOT_PORT_MODE_SGMII | \
16 OCELOT_PORT_MODE_QSGMII)
17
18 static const u32 vsc7512_port_modes[VSC7514_NUM_PORTS] = {
19 OCELOT_PORT_MODE_INTERNAL,
20 OCELOT_PORT_MODE_INTERNAL,
21 OCELOT_PORT_MODE_INTERNAL,
22 OCELOT_PORT_MODE_INTERNAL,
23 OCELOT_PORT_MODE_NONE,
24 OCELOT_PORT_MODE_NONE,
25 OCELOT_PORT_MODE_NONE,
26 OCELOT_PORT_MODE_NONE,
27 OCELOT_PORT_MODE_NONE,
28 OCELOT_PORT_MODE_NONE,
29 OCELOT_PORT_MODE_NONE,
30 };
31
32 static const struct ocelot_ops ocelot_ext_ops = {
33 .reset = ocelot_reset,
34 .wm_enc = ocelot_wm_enc,
35 .wm_dec = ocelot_wm_dec,
36 .wm_stat = ocelot_wm_stat,
37 .port_to_netdev = felix_port_to_netdev,
38 .netdev_to_port = felix_netdev_to_port,
39 };
40
41 static const char * const vsc7512_resource_names[TARGET_MAX] = {
42 [SYS] = "sys",
43 [REW] = "rew",
44 [S0] = "s0",
45 [S1] = "s1",
46 [S2] = "s2",
47 [QS] = "qs",
48 [QSYS] = "qsys",
49 [ANA] = "ana",
50 };
51
52 static const struct felix_info vsc7512_info = {
53 .resource_names = vsc7512_resource_names,
54 .regfields = vsc7514_regfields,
55 .map = vsc7514_regmap,
56 .ops = &ocelot_ext_ops,
57 .vcap = vsc7514_vcap_props,
58 .num_mact_rows = 1024,
59 .num_ports = VSC7514_NUM_PORTS,
60 .num_tx_queues = OCELOT_NUM_TC,
61 .port_modes = vsc7512_port_modes,
62 };
63
ocelot_ext_probe(struct platform_device * pdev)64 static int ocelot_ext_probe(struct platform_device *pdev)
65 {
66 struct device *dev = &pdev->dev;
67 struct dsa_switch *ds;
68 struct ocelot *ocelot;
69 struct felix *felix;
70 int err;
71
72 felix = kzalloc(sizeof(*felix), GFP_KERNEL);
73 if (!felix)
74 return -ENOMEM;
75
76 dev_set_drvdata(dev, felix);
77
78 ocelot = &felix->ocelot;
79 ocelot->dev = dev;
80
81 ocelot->num_flooding_pgids = 1;
82
83 felix->info = &vsc7512_info;
84
85 ds = kzalloc(sizeof(*ds), GFP_KERNEL);
86 if (!ds) {
87 err = -ENOMEM;
88 dev_err_probe(dev, err, "Failed to allocate DSA switch\n");
89 goto err_free_felix;
90 }
91
92 ds->dev = dev;
93 ds->num_ports = felix->info->num_ports;
94 ds->num_tx_queues = felix->info->num_tx_queues;
95
96 ds->ops = &felix_switch_ops;
97 ds->priv = ocelot;
98 felix->ds = ds;
99 felix->tag_proto = DSA_TAG_PROTO_OCELOT;
100
101 err = dsa_register_switch(ds);
102 if (err) {
103 dev_err_probe(dev, err, "Failed to register DSA switch\n");
104 goto err_free_ds;
105 }
106
107 return 0;
108
109 err_free_ds:
110 kfree(ds);
111 err_free_felix:
112 kfree(felix);
113 return err;
114 }
115
ocelot_ext_remove(struct platform_device * pdev)116 static int ocelot_ext_remove(struct platform_device *pdev)
117 {
118 struct felix *felix = dev_get_drvdata(&pdev->dev);
119
120 if (!felix)
121 return 0;
122
123 dsa_unregister_switch(felix->ds);
124
125 kfree(felix->ds);
126 kfree(felix);
127
128 return 0;
129 }
130
ocelot_ext_shutdown(struct platform_device * pdev)131 static void ocelot_ext_shutdown(struct platform_device *pdev)
132 {
133 struct felix *felix = dev_get_drvdata(&pdev->dev);
134
135 if (!felix)
136 return;
137
138 dsa_switch_shutdown(felix->ds);
139
140 dev_set_drvdata(&pdev->dev, NULL);
141 }
142
143 static const struct of_device_id ocelot_ext_switch_of_match[] = {
144 { .compatible = "mscc,vsc7512-switch" },
145 { },
146 };
147 MODULE_DEVICE_TABLE(of, ocelot_ext_switch_of_match);
148
149 static struct platform_driver ocelot_ext_switch_driver = {
150 .driver = {
151 .name = "ocelot-ext-switch",
152 .of_match_table = of_match_ptr(ocelot_ext_switch_of_match),
153 },
154 .probe = ocelot_ext_probe,
155 .remove = ocelot_ext_remove,
156 .shutdown = ocelot_ext_shutdown,
157 };
158 module_platform_driver(ocelot_ext_switch_driver);
159
160 MODULE_DESCRIPTION("External Ocelot Switch driver");
161 MODULE_LICENSE("GPL");
162 MODULE_IMPORT_NS(MFD_OCELOT);
163