diff options
Diffstat (limited to 'drivers/net/ethernet/ibm/emac/tah.h')
| -rw-r--r-- | drivers/net/ethernet/ibm/emac/tah.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/drivers/net/ethernet/ibm/emac/tah.h b/drivers/net/ethernet/ibm/emac/tah.h new file mode 100644 index 000000000..86c2b6b9d --- /dev/null +++ b/drivers/net/ethernet/ibm/emac/tah.h @@ -0,0 +1,91 @@ +/* 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. + * <benh@kernel.crashing.org> + * + * Based on the arch/ppc version of the driver: + * + * Copyright 2004 MontaVista Software, Inc. + * Matt Porter <mporter@kernel.crashing.org> + * + * Copyright (c) 2005 Eugene Surovegin <ebs@ebshome.net> + */ + +#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 */ |