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- /* SPDX-License-Identifier: GPL-2.0-or-later */
- /*
- * drivers/net/ethernet/ibm/emac/tah.h
- *
- * Driver for PowerPC 4xx on-chip ethernet controller, TAH support.
- *
- * Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
- * <[email protected]>
- *
- * Based on the arch/ppc version of the driver:
- *
- * Copyright 2004 MontaVista Software, Inc.
- * Matt Porter <[email protected]>
- *
- * Copyright (c) 2005 Eugene Surovegin <[email protected]>
- */
- #ifndef __IBM_NEWEMAC_TAH_H
- #define __IBM_NEWEMAC_TAH_H
- /* TAH */
- struct tah_regs {
- u32 revid;
- u32 pad[3];
- u32 mr;
- u32 ssr0;
- u32 ssr1;
- u32 ssr2;
- u32 ssr3;
- u32 ssr4;
- u32 ssr5;
- u32 tsr;
- };
- /* TAH device */
- struct tah_instance {
- struct tah_regs __iomem *base;
- /* Only one EMAC whacks us at a time */
- struct mutex lock;
- /* number of EMACs using this TAH */
- int users;
- /* OF device instance */
- struct platform_device *ofdev;
- };
- /* TAH engine */
- #define TAH_MR_CVR 0x80000000
- #define TAH_MR_SR 0x40000000
- #define TAH_MR_ST_256 0x01000000
- #define TAH_MR_ST_512 0x02000000
- #define TAH_MR_ST_768 0x03000000
- #define TAH_MR_ST_1024 0x04000000
- #define TAH_MR_ST_1280 0x05000000
- #define TAH_MR_ST_1536 0x06000000
- #define TAH_MR_TFS_16KB 0x00000000
- #define TAH_MR_TFS_2KB 0x00200000
- #define TAH_MR_TFS_4KB 0x00400000
- #define TAH_MR_TFS_6KB 0x00600000
- #define TAH_MR_TFS_8KB 0x00800000
- #define TAH_MR_TFS_10KB 0x00a00000
- #define TAH_MR_DTFP 0x00100000
- #define TAH_MR_DIG 0x00080000
- #ifdef CONFIG_IBM_EMAC_TAH
- int tah_init(void);
- void tah_exit(void);
- int tah_attach(struct platform_device *ofdev, int channel);
- void tah_detach(struct platform_device *ofdev, int channel);
- void tah_reset(struct platform_device *ofdev);
- int tah_get_regs_len(struct platform_device *ofdev);
- void *tah_dump_regs(struct platform_device *ofdev, void *buf);
- #else
- # define tah_init() 0
- # define tah_exit() do { } while(0)
- # define tah_attach(x,y) (-ENXIO)
- # define tah_detach(x,y) do { } while(0)
- # define tah_reset(x) do { } while(0)
- # define tah_get_regs_len(x) 0
- # define tah_dump_regs(x,buf) (buf)
- #endif /* !CONFIG_IBM_EMAC_TAH */
- #endif /* __IBM_NEWEMAC_TAH_H */
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