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