1 /* 2 * drivers/net/ibm_newemac/zmii.h 3 * 4 * Driver for PowerPC 4xx on-chip ethernet controller, ZMII 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 * Copyright (c) 2004, 2005 Zultys Technologies. 12 * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> 13 * 14 * Based on original work by 15 * Armin Kuster <akuster@mvista.com> 16 * Copyright 2001 MontaVista Softare Inc. 17 * 18 * This program is free software; you can redistribute it and/or modify it 19 * under the terms of the GNU General Public License as published by the 20 * Free Software Foundation; either version 2 of the License, or (at your 21 * option) any later version. 22 * 23 */ 24 #ifndef __IBM_NEWEMAC_ZMII_H 25 #define __IBM_NEWEMAC_ZMII_H 26 27 /* ZMII bridge registers */ 28 struct zmii_regs { 29 u32 fer; /* Function enable reg */ 30 u32 ssr; /* Speed select reg */ 31 u32 smiirs; /* SMII status reg */ 32 }; 33 34 /* ZMII device */ 35 struct zmii_instance { 36 struct zmii_regs __iomem *base; 37 38 /* Only one EMAC whacks us at a time */ 39 struct mutex lock; 40 41 /* subset of PHY_MODE_XXXX */ 42 int mode; 43 44 /* number of EMACs using this ZMII bridge */ 45 int users; 46 47 /* FER value left by firmware */ 48 u32 fer_save; 49 50 /* OF device instance */ 51 struct platform_device *ofdev; 52 }; 53 54 #ifdef CONFIG_IBM_NEW_EMAC_ZMII 55 56 extern int zmii_init(void); 57 extern void zmii_exit(void); 58 extern int zmii_attach(struct platform_device *ofdev, int input, int *mode); 59 extern void zmii_detach(struct platform_device *ofdev, int input); 60 extern void zmii_get_mdio(struct platform_device *ofdev, int input); 61 extern void zmii_put_mdio(struct platform_device *ofdev, int input); 62 extern void zmii_set_speed(struct platform_device *ofdev, int input, int speed); 63 extern int zmii_get_regs_len(struct platform_device *ocpdev); 64 extern void *zmii_dump_regs(struct platform_device *ofdev, void *buf); 65 66 #else 67 # define zmii_init() 0 68 # define zmii_exit() do { } while(0) 69 # define zmii_attach(x,y,z) (-ENXIO) 70 # define zmii_detach(x,y) do { } while(0) 71 # define zmii_get_mdio(x,y) do { } while(0) 72 # define zmii_put_mdio(x,y) do { } while(0) 73 # define zmii_set_speed(x,y,z) do { } while(0) 74 # define zmii_get_regs_len(x) 0 75 # define zmii_dump_regs(x,buf) (buf) 76 #endif /* !CONFIG_IBM_NEW_EMAC_ZMII */ 77 78 #endif /* __IBM_NEWEMAC_ZMII_H */ 79