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 | |