0a7663c2c0
This should export all of the same information as the Linux ntb_hw_intel debugfs info file, but with a bit more structure, in the sysctl tree rooted at 'dev.ntb_hw.<N>.debug_info'. Raw registers are marked as OPAQUE because reading them on some hardware revisions may cause a hard lockup (NTB errata). They can be read with 'sysctl -x dev.ntb_hw.<N>.debug_info.registers'. On Xeon platforms, some additional registers are available under 'registers.xeon_stats' and 'registers.xeon_hw_err'. They are exported as big-endian values so that the 'sysctl -x' output is legible. Shrink the feature mask to 32 bits so we can use the %b formatter in 'debug_info.features'. Sponsored by: EMC / Isilon Storage Division
117 lines
4.1 KiB
C
117 lines
4.1 KiB
C
/*-
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* Copyright (C) 2013 Intel Corporation
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* Copyright (C) 2015 EMC Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _NTB_HW_H_
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#define _NTB_HW_H_
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struct ntb_softc;
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#define NTB_MAX_NUM_MW 3
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enum ntb_speed {
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NTB_SPEED_AUTO = -1,
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NTB_SPEED_NONE = 0,
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NTB_SPEED_GEN1 = 1,
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NTB_SPEED_GEN2 = 2,
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NTB_SPEED_GEN3 = 3,
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};
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enum ntb_width {
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NTB_WIDTH_AUTO = -1,
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NTB_WIDTH_NONE = 0,
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NTB_WIDTH_1 = 1,
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NTB_WIDTH_2 = 2,
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NTB_WIDTH_4 = 4,
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NTB_WIDTH_8 = 8,
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NTB_WIDTH_12 = 12,
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NTB_WIDTH_16 = 16,
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NTB_WIDTH_32 = 32,
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};
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SYSCTL_DECL(_hw_ntb);
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typedef void (*ntb_db_callback)(void *data, uint32_t vector);
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typedef void (*ntb_event_callback)(void *data);
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struct ntb_ctx_ops {
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ntb_event_callback link_event;
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ntb_db_callback db_event;
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};
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device_t ntb_get_device(struct ntb_softc *);
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bool ntb_link_is_up(struct ntb_softc *, enum ntb_speed *, enum ntb_width *);
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void ntb_link_event(struct ntb_softc *);
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int ntb_link_enable(struct ntb_softc *, enum ntb_speed, enum ntb_width);
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int ntb_link_disable(struct ntb_softc *);
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int ntb_set_ctx(struct ntb_softc *, void *, const struct ntb_ctx_ops *);
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void *ntb_get_ctx(struct ntb_softc *, const struct ntb_ctx_ops **);
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void ntb_clear_ctx(struct ntb_softc *);
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uint8_t ntb_mw_count(struct ntb_softc *);
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int ntb_mw_get_range(struct ntb_softc *, unsigned mw_idx, vm_paddr_t *base,
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void **vbase, size_t *size, size_t *align, size_t *align_size);
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int ntb_mw_set_trans(struct ntb_softc *, unsigned mw_idx, bus_addr_t, size_t);
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int ntb_mw_clear_trans(struct ntb_softc *, unsigned mw_idx);
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uint8_t ntb_get_max_spads(struct ntb_softc *ntb);
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int ntb_spad_write(struct ntb_softc *ntb, unsigned int idx, uint32_t val);
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int ntb_spad_read(struct ntb_softc *ntb, unsigned int idx, uint32_t *val);
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int ntb_peer_spad_write(struct ntb_softc *ntb, unsigned int idx,
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uint32_t val);
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int ntb_peer_spad_read(struct ntb_softc *ntb, unsigned int idx,
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uint32_t *val);
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uint64_t ntb_db_valid_mask(struct ntb_softc *);
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uint64_t ntb_db_vector_mask(struct ntb_softc *, uint32_t vector);
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bus_addr_t ntb_get_peer_db_addr(struct ntb_softc *, vm_size_t *sz_out);
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void ntb_db_clear(struct ntb_softc *, uint64_t bits);
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void ntb_db_clear_mask(struct ntb_softc *, uint64_t bits);
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uint64_t ntb_db_read(struct ntb_softc *);
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void ntb_db_set_mask(struct ntb_softc *, uint64_t bits);
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void ntb_peer_db_set(struct ntb_softc *, uint64_t bits);
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/* Hardware owns the low 16 bits of features. */
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#define NTB_BAR_SIZE_4K (1 << 0)
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#define NTB_SDOORBELL_LOCKUP (1 << 1)
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#define NTB_SB01BASE_LOCKUP (1 << 2)
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#define NTB_B2BDOORBELL_BIT14 (1 << 3)
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/* Software/configuration owns the top 16 bits. */
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#define NTB_SPLIT_BAR (1ull << 16)
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#define NTB_FEATURES_STR \
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"\20\21SPLIT_BAR4\04B2B_DOORBELL_BIT14\03SB01BASE_LOCKUP" \
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"\02SDOORBELL_LOCKUP\01BAR_SIZE_4K"
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bool ntb_has_feature(struct ntb_softc *, uint32_t);
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#endif /* _NTB_HW_H_ */
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