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- /* SPDX-License-Identifier: GPL-2.0
- *
- * Copyright 2008-2013 Solarflare Communications Inc.
- * Copyright (C) 2022-2025, Advanced Micro Devices, Inc.
- */
- #ifndef CDX_MCDID_H
- #define CDX_MCDID_H
- #include <linux/mutex.h>
- #include <linux/kref.h>
- #include <linux/rpmsg.h>
- #include "mc_cdx_pcol.h"
- #ifdef DEBUG
- #define CDX_WARN_ON_ONCE_PARANOID(x) WARN_ON_ONCE(x)
- #define CDX_WARN_ON_PARANOID(x) WARN_ON(x)
- #else
- #define CDX_WARN_ON_ONCE_PARANOID(x) do {} while (0)
- #define CDX_WARN_ON_PARANOID(x) do {} while (0)
- #endif
- #define MCDI_BUF_LEN (8 + MCDI_CTL_SDU_LEN_MAX)
- static inline struct cdx_mcdi_iface *cdx_mcdi_if(struct cdx_mcdi *cdx)
- {
- return cdx->mcdi ? &cdx->mcdi->iface : NULL;
- }
- int cdx_mcdi_rpc_async(struct cdx_mcdi *cdx, unsigned int cmd,
- const struct cdx_dword *inbuf, size_t inlen,
- cdx_mcdi_async_completer *complete,
- unsigned long cookie);
- int cdx_mcdi_wait_for_quiescence(struct cdx_mcdi *cdx,
- unsigned int timeout_jiffies);
- /*
- * 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.
- */
- #define MCDI_BYTE(_buf, _field) \
- ((void)BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 1), \
- *MCDI_PTR(_buf, _field))
- #define MCDI_WORD(_buf, _field) \
- ((void)BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 2), \
- le16_to_cpu(*(__force const __le16 *)MCDI_PTR(_buf, _field)))
- #define MCDI_POPULATE_DWORD_1(_buf, _field, _name1, _value1) \
- CDX_POPULATE_DWORD_1(*_MCDI_DWORD(_buf, _field), \
- MC_CMD_ ## _name1, _value1)
- #define MCDI_SET_QWORD(_buf, _field, _value) \
- do { \
- CDX_POPULATE_DWORD_1(_MCDI_DWORD(_buf, _field)[0], \
- CDX_DWORD, (u32)(_value)); \
- CDX_POPULATE_DWORD_1(_MCDI_DWORD(_buf, _field)[1], \
- CDX_DWORD, (u64)(_value) >> 32); \
- } while (0)
- #define MCDI_QWORD(_buf, _field) \
- (CDX_DWORD_FIELD(_MCDI_DWORD(_buf, _field)[0], CDX_DWORD) | \
- (u64)CDX_DWORD_FIELD(_MCDI_DWORD(_buf, _field)[1], CDX_DWORD) << 32)
- #endif /* CDX_MCDID_H */
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