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_SERDES, 24 OCELOT_PORT_MODE_SERDES, 25 OCELOT_PORT_MODE_SERDES, 26 OCELOT_PORT_MODE_SERDES, 27 OCELOT_PORT_MODE_SERDES, 28 OCELOT_PORT_MODE_SGMII, 29 OCELOT_PORT_MODE_SERDES, 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 .phylink_mac_config = ocelot_phylink_mac_config, 63 .configure_serdes = ocelot_port_configure_serdes, 64 }; 65 66 static int ocelot_ext_probe(struct platform_device *pdev) 67 { 68 struct device *dev = &pdev->dev; 69 struct dsa_switch *ds; 70 struct ocelot *ocelot; 71 struct felix *felix; 72 int err; 73 74 felix = kzalloc(sizeof(*felix), GFP_KERNEL); 75 if (!felix) 76 return -ENOMEM; 77 78 dev_set_drvdata(dev, felix); 79 80 ocelot = &felix->ocelot; 81 ocelot->dev = dev; 82 83 ocelot->num_flooding_pgids = 1; 84 85 felix->info = &vsc7512_info; 86 87 ds = kzalloc(sizeof(*ds), GFP_KERNEL); 88 if (!ds) { 89 err = -ENOMEM; 90 dev_err_probe(dev, err, "Failed to allocate DSA switch\n"); 91 goto err_free_felix; 92 } 93 94 ds->dev = dev; 95 ds->num_ports = felix->info->num_ports; 96 ds->num_tx_queues = felix->info->num_tx_queues; 97 98 ds->ops = &felix_switch_ops; 99 ds->priv = ocelot; 100 felix->ds = ds; 101 felix->tag_proto = DSA_TAG_PROTO_OCELOT; 102 103 err = dsa_register_switch(ds); 104 if (err) { 105 dev_err_probe(dev, err, "Failed to register DSA switch\n"); 106 goto err_free_ds; 107 } 108 109 return 0; 110 111 err_free_ds: 112 kfree(ds); 113 err_free_felix: 114 kfree(felix); 115 return err; 116 } 117 118 static void ocelot_ext_remove(struct platform_device *pdev) 119 { 120 struct felix *felix = dev_get_drvdata(&pdev->dev); 121 122 if (!felix) 123 return; 124 125 dsa_unregister_switch(felix->ds); 126 127 kfree(felix->ds); 128 kfree(felix); 129 } 130 131 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 = ocelot_ext_switch_of_match, 153 }, 154 .probe = ocelot_ext_probe, 155 .remove_new = 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