43 lines
1.5 KiB
C
43 lines
1.5 KiB
C
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/*
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* Copyright (C) 2013 Apple Inc. All rights reserved.
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*
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* This document is the property of Apple Inc.
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* It is considered confidential and proprietary.
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*
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* This document may not be reproduced or transmitted in any form,
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* in whole or in part, without the express written permission of
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* Apple Inc.
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*/
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#ifndef THUNDERBOLT_NHI_H
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#define THUNDERBOLT_NHI_H
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#include <drivers/pci.h>
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#include <stdint.h>
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#define NHI_STATUS_OK (0)
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#define NHI_STATUS_UNKNOWN_ERROR (-1)
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#define NHI_STATUS_CRC_ERROR (-2)
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#define NHI_STATUS_INVALID_DESCRIPTOR (-3)
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#define NHI_STATUS_TIMEOUT (-4)
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typedef struct nhi_sgl {
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void *buffer;
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uint32_t bytes;
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struct nhi_sgl *next;
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} nhi_sgl_t;
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typedef struct nhi nhi_t;
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nhi_t *nhi_init(pci_device_t bridge, uint32_t dart_id);
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void nhi_quiesce_and_free(nhi_t *nhi);
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void nhi_init_tx_ring(nhi_t *nhi, uint32_t ring_idx, uint32_t num_buffers, uint32_t buffer_size);
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void nhi_init_rx_ring(nhi_t *nhi, uint32_t ring_idx, uint32_t num_buffers, uint32_t buffer_size);
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void nhi_disable_tx_ring(nhi_t *nhi, uint32_t ring_idx);
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void nhi_disable_rx_ring(nhi_t *nhi, uint32_t ring_idx);
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int32_t nhi_send_sgl(nhi_t *nhi, uint32_t ring_idx, const nhi_sgl_t *sgl, uint8_t sof_pdf, uint8_t eof_pdf);
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int32_t nhi_send_buffer(nhi_t *nhi, uint32_t ring_idx, void *buffer, uint32_t bytes, uint8_t sof_pdf, uint8_t eof_pdf);
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bool nhi_rx_buffer_available(nhi_t *nhi, uint32_t ring_idx);
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int32_t nhi_rx_buffer(nhi_t *nhi, uint32_t ring_idx, void *buffer, uint32_t bytes, uint8_t *sof_pdf, uint8_t *eof_pdf);
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#endif
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