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/phylink.h> 8 #include <linux/platform_device.h> 9 #include <linux/regmap.h> 10 #include <soc/mscc/ocelot.h> 11 #include <soc/mscc/vsc7514_regs.h> 12 #include "felix.h" 13 14 #define VSC7514_NUM_PORTS 11 15 16 #define OCELOT_PORT_MODE_SERDES (OCELOT_PORT_MODE_SGMII | \ 17 OCELOT_PORT_MODE_QSGMII) 18 19 static const u32 vsc7512_port_modes[VSC7514_NUM_PORTS] = { 20 OCELOT_PORT_MODE_INTERNAL, 21 OCELOT_PORT_MODE_INTERNAL, 22 OCELOT_PORT_MODE_INTERNAL, 23 OCELOT_PORT_MODE_INTERNAL, 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 OCELOT_PORT_MODE_NONE, 31 }; 32 33 static const struct ocelot_ops ocelot_ext_ops = { 34 .reset = ocelot_reset, 35 .wm_enc = ocelot_wm_enc, 36 .wm_dec = ocelot_wm_dec, 37 .wm_stat = ocelot_wm_stat, 38 .port_to_netdev = felix_port_to_netdev, 39 .netdev_to_port = felix_netdev_to_port, 40 }; 41 42 static const char * const vsc7512_resource_names[TARGET_MAX] = { 43 [SYS] = "sys", 44 [REW] = "rew", 45 [S0] = "s0", 46 [S1] = "s1", 47 [S2] = "s2", 48 [QS] = "qs", 49 [QSYS] = "qsys", 50 [ANA] = "ana", 51 }; 52 53 static const struct felix_info vsc7512_info = { 54 .resource_names = vsc7512_resource_names, 55 .regfields = vsc7514_regfields, 56 .map = vsc7514_regmap, 57 .ops = &ocelot_ext_ops, 58 .vcap = vsc7514_vcap_props, 59 .num_mact_rows = 1024, 60 .num_ports = VSC7514_NUM_PORTS, 61 .num_tx_queues = OCELOT_NUM_TC, 62 .port_modes = vsc7512_port_modes, 63 }; 64 65 static int ocelot_ext_probe(struct platform_device *pdev) 66 { 67 struct device *dev = &pdev->dev; 68 struct dsa_switch *ds; 69 struct ocelot *ocelot; 70 struct felix *felix; 71 int err; 72 73 felix = kzalloc(sizeof(*felix), GFP_KERNEL); 74 if (!felix) 75 return -ENOMEM; 76 77 dev_set_drvdata(dev, felix); 78 79 ocelot = &felix->ocelot; 80 ocelot->dev = dev; 81 82 ocelot->num_flooding_pgids = 1; 83 84 felix->info = &vsc7512_info; 85 86 ds = kzalloc(sizeof(*ds), GFP_KERNEL); 87 if (!ds) { 88 err = -ENOMEM; 89 dev_err_probe(dev, err, "Failed to allocate DSA switch\n"); 90 goto err_free_felix; 91 } 92 93 ds->dev = dev; 94 ds->num_ports = felix->info->num_ports; 95 ds->num_tx_queues = felix->info->num_tx_queues; 96 97 ds->ops = &felix_switch_ops; 98 ds->priv = ocelot; 99 felix->ds = ds; 100 felix->tag_proto = DSA_TAG_PROTO_OCELOT; 101 102 err = dsa_register_switch(ds); 103 if (err) { 104 dev_err_probe(dev, err, "Failed to register DSA switch\n"); 105 goto err_free_ds; 106 } 107 108 return 0; 109 110 err_free_ds: 111 kfree(ds); 112 err_free_felix: 113 kfree(felix); 114 return err; 115 } 116 117 static int ocelot_ext_remove(struct platform_device *pdev) 118 { 119 struct felix *felix = dev_get_drvdata(&pdev->dev); 120 121 if (!felix) 122 return 0; 123 124 dsa_unregister_switch(felix->ds); 125 126 kfree(felix->ds); 127 kfree(felix); 128 129 return 0; 130 } 131 132 static void ocelot_ext_shutdown(struct platform_device *pdev) 133 { 134 struct felix *felix = dev_get_drvdata(&pdev->dev); 135 136 if (!felix) 137 return; 138 139 dsa_switch_shutdown(felix->ds); 140 141 dev_set_drvdata(&pdev->dev, NULL); 142 } 143 144 static const struct of_device_id ocelot_ext_switch_of_match[] = { 145 { .compatible = "mscc,vsc7512-switch" }, 146 { }, 147 }; 148 MODULE_DEVICE_TABLE(of, ocelot_ext_switch_of_match); 149 150 static struct platform_driver ocelot_ext_switch_driver = { 151 .driver = { 152 .name = "ocelot-switch", 153 .of_match_table = of_match_ptr(ocelot_ext_switch_of_match), 154 }, 155 .probe = ocelot_ext_probe, 156 .remove = ocelot_ext_remove, 157 .shutdown = ocelot_ext_shutdown, 158 }; 159 module_platform_driver(ocelot_ext_switch_driver); 160 161 MODULE_DESCRIPTION("External Ocelot Switch driver"); 162 MODULE_LICENSE("GPL"); 163 MODULE_IMPORT_NS(MFD_OCELOT); 164