1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * drivers/net/ethernet/ibm/emac/zmii.h 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Driver for PowerPC 4xx on-chip ethernet controller, ZMII bridge support. 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * Copyright 2007 Benjamin Herrenschmidt, IBM Corp. 8*4882a593Smuzhiyun * <benh@kernel.crashing.org> 9*4882a593Smuzhiyun * 10*4882a593Smuzhiyun * Based on the arch/ppc version of the driver: 11*4882a593Smuzhiyun * 12*4882a593Smuzhiyun * Copyright (c) 2004, 2005 Zultys Technologies. 13*4882a593Smuzhiyun * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> 14*4882a593Smuzhiyun * 15*4882a593Smuzhiyun * Based on original work by 16*4882a593Smuzhiyun * Armin Kuster <akuster@mvista.com> 17*4882a593Smuzhiyun * Copyright 2001 MontaVista Softare Inc. 18*4882a593Smuzhiyun */ 19*4882a593Smuzhiyun #ifndef __IBM_NEWEMAC_ZMII_H 20*4882a593Smuzhiyun #define __IBM_NEWEMAC_ZMII_H 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun /* ZMII bridge registers */ 23*4882a593Smuzhiyun struct zmii_regs { 24*4882a593Smuzhiyun u32 fer; /* Function enable reg */ 25*4882a593Smuzhiyun u32 ssr; /* Speed select reg */ 26*4882a593Smuzhiyun u32 smiirs; /* SMII status reg */ 27*4882a593Smuzhiyun }; 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun /* ZMII device */ 30*4882a593Smuzhiyun struct zmii_instance { 31*4882a593Smuzhiyun struct zmii_regs __iomem *base; 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun /* Only one EMAC whacks us at a time */ 34*4882a593Smuzhiyun struct mutex lock; 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun /* subset of PHY_MODE_XXXX */ 37*4882a593Smuzhiyun int mode; 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun /* number of EMACs using this ZMII bridge */ 40*4882a593Smuzhiyun int users; 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun /* FER value left by firmware */ 43*4882a593Smuzhiyun u32 fer_save; 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun /* OF device instance */ 46*4882a593Smuzhiyun struct platform_device *ofdev; 47*4882a593Smuzhiyun }; 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun #ifdef CONFIG_IBM_EMAC_ZMII 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun int zmii_init(void); 52*4882a593Smuzhiyun void zmii_exit(void); 53*4882a593Smuzhiyun int zmii_attach(struct platform_device *ofdev, int input, 54*4882a593Smuzhiyun phy_interface_t *mode); 55*4882a593Smuzhiyun void zmii_detach(struct platform_device *ofdev, int input); 56*4882a593Smuzhiyun void zmii_get_mdio(struct platform_device *ofdev, int input); 57*4882a593Smuzhiyun void zmii_put_mdio(struct platform_device *ofdev, int input); 58*4882a593Smuzhiyun void zmii_set_speed(struct platform_device *ofdev, int input, int speed); 59*4882a593Smuzhiyun int zmii_get_regs_len(struct platform_device *ocpdev); 60*4882a593Smuzhiyun void *zmii_dump_regs(struct platform_device *ofdev, void *buf); 61*4882a593Smuzhiyun 62*4882a593Smuzhiyun #else 63*4882a593Smuzhiyun # define zmii_init() 0 64*4882a593Smuzhiyun # define zmii_exit() do { } while(0) 65*4882a593Smuzhiyun # define zmii_attach(x,y,z) (-ENXIO) 66*4882a593Smuzhiyun # define zmii_detach(x,y) do { } while(0) 67*4882a593Smuzhiyun # define zmii_get_mdio(x,y) do { } while(0) 68*4882a593Smuzhiyun # define zmii_put_mdio(x,y) do { } while(0) 69*4882a593Smuzhiyun # define zmii_set_speed(x,y,z) do { } while(0) 70*4882a593Smuzhiyun # define zmii_get_regs_len(x) 0 71*4882a593Smuzhiyun # define zmii_dump_regs(x,buf) (buf) 72*4882a593Smuzhiyun #endif /* !CONFIG_IBM_EMAC_ZMII */ 73*4882a593Smuzhiyun 74*4882a593Smuzhiyun #endif /* __IBM_NEWEMAC_ZMII_H */ 75