165 lines
7.0 KiB
C
165 lines
7.0 KiB
C
/****************************************************************************
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* Driver for Solarflare network controllers and boards
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*
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* Written by Martin Habets <mhabets@solarflare.com>
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*
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* Copyright 2012-2017 Solarflare Communications Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* You can also choose to distribute this program under the terms of
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* the Unmodified Binary Distribution Licence (as given in the file
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* COPYING.UBDL), provided that you have satisfied its requirements.
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*/
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#ifndef SFC_MCDI_H
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#define SFC_MCDI_H
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#ifndef DIV_ROUND_UP
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#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
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#endif
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#define MCDI_SEQ_MASK 0xf
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/* We expect that 16- and 32-bit fields in MCDI requests and responses
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* are appropriately aligned, but 64-bit fields are only
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* 32-bit-aligned. Also, on Siena we must copy to the MC shared
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* memory strictly 32 bits at a time, so add any necessary padding.
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*/
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#define MCDI_DECLARE_BUF(_name, _len) \
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efx_dword_t _name[DIV_ROUND_UP(_len, 4)]
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#define MCDI_DECLARE_BUF_OUT_OR_ERR(_name, _len) \
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MCDI_DECLARE_BUF(_name, max_t(size_t, _len, 8))
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#define _MCDI_PTR(_buf, _offset) \
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((u8 *)(_buf) + (_offset))
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#define MCDI_PTR(_buf, _field) \
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_MCDI_PTR(_buf, MC_CMD_ ## _field ## _OFST)
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#define _MCDI_CHECK_ALIGN(_ofst, _align) \
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((_ofst) + BUILD_BUG_ON_ZERO((_ofst) & (_align - 1)))
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#define _MCDI_DWORD(_buf, _field) \
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((_buf) + (_MCDI_CHECK_ALIGN(MC_CMD_ ## _field ## _OFST, 4) >> 2))
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#define MCDI_WORD(_buf, _field) \
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((u16)BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 2) + \
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le16_to_cpu(*(__force const __le16 *)MCDI_PTR(_buf, _field)))
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#define MCDI_SET_DWORD(_buf, _field, _value) \
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EFX_POPULATE_DWORD_1(*_MCDI_DWORD(_buf, _field), EFX_DWORD_0, _value)
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#define MCDI_DWORD(_buf, _field) \
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EFX_DWORD_FIELD(*_MCDI_DWORD(_buf, _field), EFX_DWORD_0)
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#define MCDI_POPULATE_DWORD_1(_buf, _field, _name1, _value1) \
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EFX_POPULATE_DWORD_1(*_MCDI_DWORD(_buf, _field), \
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MC_CMD_ ## _name1, _value1)
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#define MCDI_POPULATE_DWORD_2(_buf, _field, _name1, _value1, \
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_name2, _value2) \
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EFX_POPULATE_DWORD_2(*_MCDI_DWORD(_buf, _field), \
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MC_CMD_ ## _name1, _value1, \
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MC_CMD_ ## _name2, _value2)
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#define MCDI_POPULATE_DWORD_3(_buf, _field, _name1, _value1, \
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_name2, _value2, _name3, _value3) \
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EFX_POPULATE_DWORD_3(*_MCDI_DWORD(_buf, _field), \
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MC_CMD_ ## _name1, _value1, \
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MC_CMD_ ## _name2, _value2, \
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MC_CMD_ ## _name3, _value3)
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#define MCDI_POPULATE_DWORD_4(_buf, _field, _name1, _value1, \
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_name2, _value2, _name3, _value3, \
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_name4, _value4) \
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EFX_POPULATE_DWORD_4(*_MCDI_DWORD(_buf, _field), \
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MC_CMD_ ## _name1, _value1, \
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MC_CMD_ ## _name2, _value2, \
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MC_CMD_ ## _name3, _value3, \
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MC_CMD_ ## _name4, _value4)
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#define MCDI_POPULATE_DWORD_5(_buf, _field, _name1, _value1, \
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_name2, _value2, _name3, _value3, \
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_name4, _value4, _name5, _value5) \
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EFX_POPULATE_DWORD_5(*_MCDI_DWORD(_buf, _field), \
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MC_CMD_ ## _name1, _value1, \
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MC_CMD_ ## _name2, _value2, \
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MC_CMD_ ## _name3, _value3, \
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MC_CMD_ ## _name4, _value4, \
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MC_CMD_ ## _name5, _value5)
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#define MCDI_POPULATE_DWORD_6(_buf, _field, _name1, _value1, \
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_name2, _value2, _name3, _value3, \
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_name4, _value4, _name5, _value5, \
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_name6, _value6) \
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EFX_POPULATE_DWORD_6(*_MCDI_DWORD(_buf, _field), \
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MC_CMD_ ## _name1, _value1, \
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MC_CMD_ ## _name2, _value2, \
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MC_CMD_ ## _name3, _value3, \
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MC_CMD_ ## _name4, _value4, \
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MC_CMD_ ## _name5, _value5, \
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MC_CMD_ ## _name6, _value6)
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#define MCDI_POPULATE_DWORD_7(_buf, _field, _name1, _value1, \
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_name2, _value2, _name3, _value3, \
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_name4, _value4, _name5, _value5, \
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_name6, _value6, _name7, _value7) \
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EFX_POPULATE_DWORD_7(*_MCDI_DWORD(_buf, _field), \
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MC_CMD_ ## _name1, _value1, \
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MC_CMD_ ## _name2, _value2, \
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MC_CMD_ ## _name3, _value3, \
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MC_CMD_ ## _name4, _value4, \
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MC_CMD_ ## _name5, _value5, \
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MC_CMD_ ## _name6, _value6, \
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MC_CMD_ ## _name7, _value7)
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#define MCDI_SET_QWORD(_buf, _field, _value) \
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do { \
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EFX_POPULATE_DWORD_1(_MCDI_DWORD(_buf, _field)[0], \
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EFX_DWORD_0, (u32)(_value)); \
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EFX_POPULATE_DWORD_1(_MCDI_DWORD(_buf, _field)[1], \
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EFX_DWORD_0, (u64)(_value) >> 32); \
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} while (0)
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#define MCDI_QWORD(_buf, _field) \
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(EFX_DWORD_FIELD(_MCDI_DWORD(_buf, _field)[0], EFX_DWORD_0) | \
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(u64)EFX_DWORD_FIELD(_MCDI_DWORD(_buf, _field)[1], EFX_DWORD_0) << 32)
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#define MCDI_FIELD(_ptr, _type, _field) \
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EFX_EXTRACT_DWORD( \
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*(efx_dword_t *) \
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_MCDI_PTR(_ptr, MC_CMD_ ## _type ## _ ## _field ## _OFST & ~3),\
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MC_CMD_ ## _type ## _ ## _field ## _LBN & 0x1f, \
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(MC_CMD_ ## _type ## _ ## _field ## _LBN & 0x1f) + \
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MC_CMD_ ## _type ## _ ## _field ## _WIDTH - 1)
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#define _MCDI_ARRAY_PTR(_buf, _field, _index, _align) \
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(_MCDI_PTR(_buf, _MCDI_CHECK_ALIGN(MC_CMD_ ## _field ## _OFST, _align))\
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+ (_index) * _MCDI_CHECK_ALIGN(MC_CMD_ ## _field ## _LEN, _align))
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#define MCDI_DECLARE_STRUCT_PTR(_name) \
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efx_dword_t *_name
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#define MCDI_ARRAY_STRUCT_PTR(_buf, _field, _index) \
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((efx_dword_t *)_MCDI_ARRAY_PTR(_buf, _field, _index, 4))
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#define MCDI_VAR_ARRAY_LEN(_len, _field) \
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min_t(size_t, MC_CMD_ ## _field ## _MAXNUM, \
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((_len) - MC_CMD_ ## _field ## _OFST) / MC_CMD_ ## _field ## _LEN)
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#define MCDI_ARRAY_WORD(_buf, _field, _index) \
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(BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 2) + \
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le16_to_cpu(*(__force const __le16 *) \
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_MCDI_ARRAY_PTR(_buf, _field, _index, 2)))
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#define _MCDI_ARRAY_DWORD(_buf, _field, _index) \
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(BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 4) + \
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(efx_dword_t *)_MCDI_ARRAY_PTR(_buf, _field, _index, 4))
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#define MCDI_SET_ARRAY_DWORD(_buf, _field, _index, _value) \
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EFX_SET_DWORD_FIELD(*_MCDI_ARRAY_DWORD(_buf, _field, _index), \
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EFX_DWORD_0, _value)
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#define MCDI_ARRAY_DWORD(_buf, _field, _index) \
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EFX_DWORD_FIELD(*_MCDI_ARRAY_DWORD(_buf, _field, _index), EFX_DWORD_0)
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#define _MCDI_ARRAY_QWORD(_buf, _field, _index) \
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(BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 8) + \
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(efx_dword_t *)_MCDI_ARRAY_PTR(_buf, _field, _index, 4))
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#define MCDI_SET_ARRAY_QWORD(_buf, _field, _index, _value) \
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do { \
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EFX_SET_DWORD_FIELD(_MCDI_ARRAY_QWORD(_buf, _field, _index)[0],\
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EFX_DWORD_0, (u32)(_value)); \
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EFX_SET_DWORD_FIELD(_MCDI_ARRAY_QWORD(_buf, _field, _index)[1],\
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EFX_DWORD_0, (u64)(_value) >> 32); \
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} while (0)
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#define MCDI_ARRAY_FIELD(_buf, _field1, _type, _index, _field2) \
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MCDI_FIELD(MCDI_ARRAY_STRUCT_PTR(_buf, _field1, _index), \
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_type ## _TYPEDEF, _field2)
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#define MCDI_EVENT_FIELD(_ev, _field) \
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EFX_QWORD_FIELD(_ev, MCDI_EVENT_ ## _field)
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#endif
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