1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * drivers/net/ethernet/ibm/emac/rgmii.h 4 * 5 * Driver for PowerPC 4xx on-chip ethernet controller, RGMII bridge support. 6 * 7 * Copyright 2007 Benjamin Herrenschmidt, IBM Corp. 8 * <benh@kernel.crashing.org> 9 * 10 * Based on the arch/ppc version of the driver: 11 * 12 * Based on ocp_zmii.h/ibm_emac_zmii.h 13 * Armin Kuster akuster@mvista.com 14 * 15 * Copyright 2004 MontaVista Software, Inc. 16 * Matt Porter <mporter@kernel.crashing.org> 17 * 18 * Copyright (c) 2004, 2005 Zultys Technologies. 19 * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> 20 */ 21 22 #ifndef __IBM_NEWEMAC_RGMII_H 23 #define __IBM_NEWEMAC_RGMII_H 24 25 /* RGMII bridge type */ 26 #define RGMII_STANDARD 0 27 #define RGMII_AXON 1 28 29 /* RGMII bridge */ 30 struct rgmii_regs { 31 u32 fer; /* Function enable register */ 32 u32 ssr; /* Speed select register */ 33 }; 34 35 /* RGMII device */ 36 struct rgmii_instance { 37 struct rgmii_regs __iomem *base; 38 39 /* RGMII bridge flags */ 40 int flags; 41 #define EMAC_RGMII_FLAG_HAS_MDIO 0x00000001 42 43 /* Only one EMAC whacks us at a time */ 44 struct mutex lock; 45 46 /* number of EMACs using this RGMII bridge */ 47 int users; 48 49 /* OF device instance */ 50 struct platform_device *ofdev; 51 }; 52 53 #ifdef CONFIG_IBM_EMAC_RGMII 54 55 int rgmii_init(void); 56 void rgmii_exit(void); 57 int rgmii_attach(struct platform_device *ofdev, int input, int mode); 58 void rgmii_detach(struct platform_device *ofdev, int input); 59 void rgmii_get_mdio(struct platform_device *ofdev, int input); 60 void rgmii_put_mdio(struct platform_device *ofdev, int input); 61 void rgmii_set_speed(struct platform_device *ofdev, int input, int speed); 62 int rgmii_get_regs_len(struct platform_device *ofdev); 63 void *rgmii_dump_regs(struct platform_device *ofdev, void *buf); 64 65 #else 66 67 # define rgmii_init() 0 68 # define rgmii_exit() do { } while(0) 69 # define rgmii_attach(x,y,z) (-ENXIO) 70 # define rgmii_detach(x,y) do { } while(0) 71 # define rgmii_get_mdio(o,i) do { } while (0) 72 # define rgmii_put_mdio(o,i) do { } while (0) 73 # define rgmii_set_speed(x,y,z) do { } while(0) 74 # define rgmii_get_regs_len(x) 0 75 # define rgmii_dump_regs(x,buf) (buf) 76 #endif /* !CONFIG_IBM_EMAC_RGMII */ 77 78 #endif /* __IBM_NEWEMAC_RGMII_H */ 79