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android_kernel_xiaomi_sm8350/drivers/net/ibm_newemac/rgmii.h

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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>
2007-08-22 23:56:01 -04:00
/*
* drivers/net/ibm_newemac/rgmii.h
*
* Driver for PowerPC 4xx on-chip ethernet controller, RGMII bridge support.
*
ibm_newemac: Update file headers copyright notices This updates the copyright notices of the new EMAC driver to avoid confusion as who is to be blamed for new bugs. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04 19:14:33 -05:00
* 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>
2007-08-22 23:56:01 -04:00
* Based on ocp_zmii.h/ibm_emac_zmii.h
* Armin Kuster akuster@mvista.com
*
* Copyright 2004 MontaVista Software, Inc.
* Matt Porter <mporter@kernel.crashing.org>
*
* 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_RGMII_H
#define __IBM_NEWEMAC_RGMII_H
/* RGMII bridge type */
#define RGMII_STANDARD 0
#define RGMII_AXON 1
/* RGMII bridge */
struct rgmii_regs {
u32 fer; /* Function enable register */
u32 ssr; /* Speed select register */
};
/* RGMII device */
struct rgmii_instance {
struct rgmii_regs __iomem *base;
ibm_newemac: Cleanup/Fix RGMII MDIO support detection More than just "AXON" version of EMAC RGMII supports MDIO, so replace the current test with a generic property in the device-tree that indicates such support. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Stefan Roese <sr@denx.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04 19:14:28 -05:00
/* RGMII bridge flags */
int flags;
#define EMAC_RGMII_FLAG_HAS_MDIO 0x00000001
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>
2007-08-22 23:56:01 -04:00
/* Only one EMAC whacks us at a time */
struct mutex lock;
/* number of EMACs using this RGMII bridge */
int users;
/* OF device instance */
struct of_device *ofdev;
};
#ifdef CONFIG_IBM_NEW_EMAC_RGMII
extern int rgmii_init(void);
extern void rgmii_exit(void);
extern int rgmii_attach(struct of_device *ofdev, int input, int mode);
extern void rgmii_detach(struct of_device *ofdev, int input);
extern void rgmii_get_mdio(struct of_device *ofdev, int input);
extern void rgmii_put_mdio(struct of_device *ofdev, int input);
extern void rgmii_set_speed(struct of_device *ofdev, int input, int speed);
extern int rgmii_get_regs_len(struct of_device *ofdev);
extern void *rgmii_dump_regs(struct of_device *ofdev, void *buf);
#else
# define rgmii_init() 0
# define rgmii_exit() do { } while(0)
# define rgmii_attach(x,y,z) (-ENXIO)
# define rgmii_detach(x,y) do { } while(0)
# define rgmii_get_mdio(o,i) do { } while (0)
# define rgmii_put_mdio(o,i) do { } while (0)
# define rgmii_set_speed(x,y,z) do { } while(0)
# define rgmii_get_regs_len(x) 0
# define rgmii_dump_regs(x,buf) (buf)
#endif /* !CONFIG_IBM_NEW_EMAC_RGMII */
#endif /* __IBM_NEWEMAC_RGMII_H */
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