1 /* 2 * drivers/net/ethernet/ibm/emac/rgmii.h 3 * 4 * Driver for PowerPC 4xx on-chip ethernet controller, RGMII bridge support. 5 * 6 * Copyright 2007 Benjamin Herrenschmidt, IBM Corp. 7 * <benh@kernel.crashing.org> 8 * 9 * Based on the arch/ppc version of the driver: 10 * 11 * Based on ocp_zmii.h/ibm_emac_zmii.h 12 * Armin Kuster akuster@mvista.com 13 * 14 * Copyright 2004 MontaVista Software, Inc. 15 * Matt Porter <mporter@kernel.crashing.org> 16 * 17 * Copyright (c) 2004, 2005 Zultys Technologies. 18 * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> 19 * 20 * This program is free software; you can redistribute it and/or modify it 21 * under the terms of the GNU General Public License as published by the 22 * Free Software Foundation; either version 2 of the License, or (at your 23 * option) any later version. 24 */ 25 26 #ifndef __IBM_NEWEMAC_RGMII_H 27 #define __IBM_NEWEMAC_RGMII_H 28 29 /* RGMII bridge type */ 30 #define RGMII_STANDARD 0 31 #define RGMII_AXON 1 32 33 /* RGMII bridge */ 34 struct rgmii_regs { 35 u32 fer; /* Function enable register */ 36 u32 ssr; /* Speed select register */ 37 }; 38 39 /* RGMII device */ 40 struct rgmii_instance { 41 struct rgmii_regs __iomem *base; 42 43 /* RGMII bridge flags */ 44 int flags; 45 #define EMAC_RGMII_FLAG_HAS_MDIO 0x00000001 46 47 /* Only one EMAC whacks us at a time */ 48 struct mutex lock; 49 50 /* number of EMACs using this RGMII bridge */ 51 int users; 52 53 /* OF device instance */ 54 struct platform_device *ofdev; 55 }; 56 57 #ifdef CONFIG_IBM_EMAC_RGMII 58 59 int rgmii_init(void); 60 void rgmii_exit(void); 61 int rgmii_attach(struct platform_device *ofdev, int input, int mode); 62 void rgmii_detach(struct platform_device *ofdev, int input); 63 void rgmii_get_mdio(struct platform_device *ofdev, int input); 64 void rgmii_put_mdio(struct platform_device *ofdev, int input); 65 void rgmii_set_speed(struct platform_device *ofdev, int input, int speed); 66 int rgmii_get_regs_len(struct platform_device *ofdev); 67 void *rgmii_dump_regs(struct platform_device *ofdev, void *buf); 68 69 #else 70 71 # define rgmii_init() 0 72 # define rgmii_exit() do { } while(0) 73 # define rgmii_attach(x,y,z) (-ENXIO) 74 # define rgmii_detach(x,y) do { } while(0) 75 # define rgmii_get_mdio(o,i) do { } while (0) 76 # define rgmii_put_mdio(o,i) do { } while (0) 77 # define rgmii_set_speed(x,y,z) do { } while(0) 78 # define rgmii_get_regs_len(x) 0 79 # define rgmii_dump_regs(x,buf) (buf) 80 #endif /* !CONFIG_IBM_EMAC_RGMII */ 81 82 #endif /* __IBM_NEWEMAC_RGMII_H */ 83