Device tree aware EMAC driver
Based on BenH's earlier work, this is a new version of the EMAC driver
for the built-in ethernet found on PowerPC 4xx embedded CPUs. The
same ASIC is also found in the Axon bridge chip. This new version is
designed to work in the arch/powerpc tree, using the device tree to
probe the device, rather than the old and ugly arch/ppc OCP layer.
This driver is designed to sit alongside the old driver (that lies in
drivers/net/ibm_emac and this one in drivers/net/ibm_newemac). The
old driver is left in place to support arch/ppc until arch/ppc itself
reaches its final demise (not too long now, with luck).
This driver still has a number of things that could do with cleaning
up, but I think they can be fixed up after merging. Specifically:
- Should be adjusted to properly use the dma mapping API.
Axon needs this.
- Probe logic needs reworking, in conjuction with the general
probing code for of_platform devices. The dependencies here between
EMAC, MAL, ZMII etc. make this complicated. At present, it usually
works, because we initialize and register the sub-drivers before the
EMAC driver itself, and (being in driver code) runs after the devices
themselves have been instantiated from the device tree.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-23 07:56:01 +04:00
/*
* drivers / net / ibm_newemac / debug . h
*
* Driver for PowerPC 4 xx on - chip ethernet controller , debug print routines .
*
2007-12-05 03:14:33 +03:00
* Copyright 2007 Benjamin Herrenschmidt , IBM Corp .
* < benh @ kernel . crashing . org >
*
* Based on the arch / ppc version of the driver :
*
Device tree aware EMAC driver
Based on BenH's earlier work, this is a new version of the EMAC driver
for the built-in ethernet found on PowerPC 4xx embedded CPUs. The
same ASIC is also found in the Axon bridge chip. This new version is
designed to work in the arch/powerpc tree, using the device tree to
probe the device, rather than the old and ugly arch/ppc OCP layer.
This driver is designed to sit alongside the old driver (that lies in
drivers/net/ibm_emac and this one in drivers/net/ibm_newemac). The
old driver is left in place to support arch/ppc until arch/ppc itself
reaches its final demise (not too long now, with luck).
This driver still has a number of things that could do with cleaning
up, but I think they can be fixed up after merging. Specifically:
- Should be adjusted to properly use the dma mapping API.
Axon needs this.
- Probe logic needs reworking, in conjuction with the general
probing code for of_platform devices. The dependencies here between
EMAC, MAL, ZMII etc. make this complicated. At present, it usually
works, because we initialize and register the sub-drivers before the
EMAC driver itself, and (being in driver code) runs after the devices
themselves have been instantiated from the device tree.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-23 07:56:01 +04:00
* Copyright ( c ) 2004 , 2005 Zultys Technologies
* Eugene Surovegin < eugene . surovegin @ zultys . com > or < ebs @ ebshome . net >
*
* This program is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation ; either version 2 of the License , or ( at your
* option ) any later version .
*
*/
# ifndef __IBM_NEWEMAC_DEBUG_H
# define __IBM_NEWEMAC_DEBUG_H
# include <linux/init.h>
# include "core.h"
# if defined(CONFIG_IBM_NEW_EMAC_DEBUG)
struct emac_instance ;
struct mal_instance ;
extern void emac_dbg_register ( struct emac_instance * dev ) ;
extern void emac_dbg_unregister ( struct emac_instance * dev ) ;
extern void mal_dbg_register ( struct mal_instance * mal ) ;
extern void mal_dbg_unregister ( struct mal_instance * mal ) ;
extern int emac_init_debug ( void ) __init ;
extern void emac_fini_debug ( void ) __exit ;
extern void emac_dbg_dump_all ( void ) ;
# define DBG_LEVEL 1
# else
# define emac_dbg_register(x) do { } while(0)
# define emac_dbg_unregister(x) do { } while(0)
# define mal_dbg_register(x) do { } while(0)
# define mal_dbg_unregister(x) do { } while(0)
# define emac_init_debug() do { } while(0)
# define emac_fini_debug() do { } while(0)
# define emac_dbg_dump_all() do { } while(0)
# define DBG_LEVEL 0
# endif
# define EMAC_DBG(dev, name, fmt, arg...) \
printk ( KERN_DEBUG # name " %s: " fmt , dev - > ofdev - > node - > full_name , # # arg )
# if DBG_LEVEL > 0
# define DBG(d,f,x...) EMAC_DBG(d, emac, f, ##x)
# define MAL_DBG(d,f,x...) EMAC_DBG(d, mal, f, ##x)
# define ZMII_DBG(d,f,x...) EMAC_DBG(d, zmii, f, ##x)
# define RGMII_DBG(d,f,x...) EMAC_DBG(d, rgmii, f, ##x)
# define NL "\n"
# else
# define DBG(f,x...) ((void)0)
# define MAL_DBG(d,f,x...) ((void)0)
# define ZMII_DBG(d,f,x...) ((void)0)
# define RGMII_DBG(d,f,x...) ((void)0)
# endif
# if DBG_LEVEL > 1
# define DBG2(d,f,x...) DBG(d,f, ##x)
# define MAL_DBG2(d,f,x...) MAL_DBG(d,f, ##x)
# define ZMII_DBG2(d,f,x...) ZMII_DBG(d,f, ##x)
# define RGMII_DBG2(d,f,x...) RGMII_DBG(d,f, ##x)
# else
# define DBG2(f,x...) ((void)0)
# define MAL_DBG2(d,f,x...) ((void)0)
# define ZMII_DBG2(d,f,x...) ((void)0)
# define RGMII_DBG2(d,f,x...) ((void)0)
# endif
# endif /* __IBM_NEWEMAC_DEBUG_H */
