1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * drivers/net/ethernet/ibm/emac/tah.h 4 * 5 * Driver for PowerPC 4xx on-chip ethernet controller, TAH 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 * Copyright 2004 MontaVista Software, Inc. 13 * Matt Porter <mporter@kernel.crashing.org> 14 * 15 * Copyright (c) 2005 Eugene Surovegin <ebs@ebshome.net> 16 */ 17 18 #ifndef __IBM_NEWEMAC_TAH_H 19 #define __IBM_NEWEMAC_TAH_H 20 21 /* TAH */ 22 struct tah_regs { 23 u32 revid; 24 u32 pad[3]; 25 u32 mr; 26 u32 ssr0; 27 u32 ssr1; 28 u32 ssr2; 29 u32 ssr3; 30 u32 ssr4; 31 u32 ssr5; 32 u32 tsr; 33 }; 34 35 36 /* TAH device */ 37 struct tah_instance { 38 struct tah_regs __iomem *base; 39 40 /* Only one EMAC whacks us at a time */ 41 struct mutex lock; 42 43 /* number of EMACs using this TAH */ 44 int users; 45 46 /* OF device instance */ 47 struct platform_device *ofdev; 48 }; 49 50 51 /* TAH engine */ 52 #define TAH_MR_CVR 0x80000000 53 #define TAH_MR_SR 0x40000000 54 #define TAH_MR_ST_256 0x01000000 55 #define TAH_MR_ST_512 0x02000000 56 #define TAH_MR_ST_768 0x03000000 57 #define TAH_MR_ST_1024 0x04000000 58 #define TAH_MR_ST_1280 0x05000000 59 #define TAH_MR_ST_1536 0x06000000 60 #define TAH_MR_TFS_16KB 0x00000000 61 #define TAH_MR_TFS_2KB 0x00200000 62 #define TAH_MR_TFS_4KB 0x00400000 63 #define TAH_MR_TFS_6KB 0x00600000 64 #define TAH_MR_TFS_8KB 0x00800000 65 #define TAH_MR_TFS_10KB 0x00a00000 66 #define TAH_MR_DTFP 0x00100000 67 #define TAH_MR_DIG 0x00080000 68 69 #ifdef CONFIG_IBM_EMAC_TAH 70 71 int tah_init(void); 72 void tah_exit(void); 73 int tah_attach(struct platform_device *ofdev, int channel); 74 void tah_detach(struct platform_device *ofdev, int channel); 75 void tah_reset(struct platform_device *ofdev); 76 int tah_get_regs_len(struct platform_device *ofdev); 77 void *tah_dump_regs(struct platform_device *ofdev, void *buf); 78 79 #else 80 81 # define tah_init() 0 82 # define tah_exit() do { } while(0) 83 # define tah_attach(x,y) (-ENXIO) 84 # define tah_detach(x,y) do { } while(0) 85 # define tah_reset(x) do { } while(0) 86 # define tah_get_regs_len(x) 0 87 # define tah_dump_regs(x,buf) (buf) 88 89 #endif /* !CONFIG_IBM_EMAC_TAH */ 90 91 #endif /* __IBM_NEWEMAC_TAH_H */ 92
