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zmii.h

zmii.h 2.0 KB
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  1. /* SPDX-License-Identifier: GPL-2.0-or-later */
    2. 

  2. /*
    3. 

  3.  * drivers/net/ethernet/ibm/emac/zmii.h
    4. 

  4.  *
    5. 

  5.  * Driver for PowerPC 4xx on-chip ethernet controller, ZMII bridge support.
    6. 

  6.  *
    7. 

  7.  * Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
    8. 

  8.  *                <benh@kernel.crashing.org>
    9. 

  9.  *
    10. 

  10.  * Based on the arch/ppc version of the driver:
    11. 

  11.  *
    12. 

  12.  * Copyright (c) 2004, 2005 Zultys Technologies.
    13. 

  13.  * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
    14. 

  14.  *
    15. 

  15.  * Based on original work by
    16. 

  16.  *      Armin Kuster <akuster@mvista.com>
    17. 

  17.  * 	Copyright 2001 MontaVista Softare Inc.
    18. 

  18.  */
    19. 

  19. #ifndef __IBM_NEWEMAC_ZMII_H
    20. 

  20. #define __IBM_NEWEMAC_ZMII_H
    21. 

  21. 

  22. /* ZMII bridge registers */
    23. 

  23. struct zmii_regs {
    24. 

  24. 	u32 fer;		/* Function enable reg */
    25. 

  25. 	u32 ssr;		/* Speed select reg */
    26. 

  26. 	u32 smiirs;		/* SMII status reg */
    27. 

  27. };
    28. 

  28. 

  29. /* ZMII device */
    30. 

  30. struct zmii_instance {
    31. 

  31. 	struct zmii_regs __iomem	*base;
    32. 

  32. 

  33. 	/* Only one EMAC whacks us at a time */
    34. 

  34. 	struct mutex			lock;
    35. 

  35. 

  36. 	/* subset of PHY_MODE_XXXX */
    37. 

  37. 	int				mode;
    38. 

  38. 

  39. 	/* number of EMACs using this ZMII bridge */
    40. 

  40. 	int				users;
    41. 

  41. 

  42. 	/* FER value left by firmware */
    43. 

  43. 	u32				fer_save;
    44. 

  44. 

  45. 	/* OF device instance */
    46. 

  46. 	struct platform_device		*ofdev;
    47. 

  47. };
    48. 

  48. 

  49. #ifdef CONFIG_IBM_EMAC_ZMII
    50. 

  50. 

  51. int zmii_init(void);
    52. 

  52. void zmii_exit(void);
    53. 

  53. int zmii_attach(struct platform_device *ofdev, int input, int *mode);
    54. 

  54. void zmii_detach(struct platform_device *ofdev, int input);
    55. 

  55. void zmii_get_mdio(struct platform_device *ofdev, int input);
    56. 

  56. void zmii_put_mdio(struct platform_device *ofdev, int input);
    57. 

  57. void zmii_set_speed(struct platform_device *ofdev, int input, int speed);
    58. 

  58. int zmii_get_regs_len(struct platform_device *ocpdev);
    59. 

  59. void *zmii_dump_regs(struct platform_device *ofdev, void *buf);
    60. 

  60. 

  61. #else
    62. 

  62. # define zmii_init()		0
    63. 

  63. # define zmii_exit()		do { } while(0)
    64. 

  64. # define zmii_attach(x,y,z)	(-ENXIO)
    65. 

  65. # define zmii_detach(x,y)	do { } while(0)
    66. 

  66. # define zmii_get_mdio(x,y)	do { } while(0)
    67. 

  67. # define zmii_put_mdio(x,y)	do { } while(0)
    68. 

  68. # define zmii_set_speed(x,y,z)	do { } while(0)
    69. 

  69. # define zmii_get_regs_len(x)	0
    70. 

  70. # define zmii_dump_regs(x,buf)	(buf)
    71. 

  71. #endif				/* !CONFIG_IBM_EMAC_ZMII */
    72. 

  72. 

  73. #endif /* __IBM_NEWEMAC_ZMII_H */
    74. 

  74.