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https://github.com/torvalds/linux
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7ba6d6dc8d
Simplify the interface for setting up bestcomm DMA to PSCs by adding some helper functions. The helper function sets the correct values for the initator and ipr values in PSC DMA tasks based on the PSC number. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/*
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* Header for Bestcomm General Buffer Descriptor tasks driver
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*
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*
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* Copyright (C) 2007 Sylvain Munaut <tnt@246tNt.com>
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* Copyright (C) 2006 AppSpec Computer Technologies Corp.
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* Jeff Gibbons <jeff.gibbons@appspec.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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*
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*/
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#ifndef __BESTCOMM_GEN_BD_H__
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#define __BESTCOMM_GEN_BD_H__
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struct bcom_gen_bd {
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u32 status;
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u32 buf_pa;
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};
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extern struct bcom_task *
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bcom_gen_bd_rx_init(int queue_len, phys_addr_t fifo,
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int initiator, int ipr, int maxbufsize);
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extern int
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bcom_gen_bd_rx_reset(struct bcom_task *tsk);
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extern void
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bcom_gen_bd_rx_release(struct bcom_task *tsk);
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extern struct bcom_task *
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bcom_gen_bd_tx_init(int queue_len, phys_addr_t fifo,
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int initiator, int ipr);
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extern int
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bcom_gen_bd_tx_reset(struct bcom_task *tsk);
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extern void
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bcom_gen_bd_tx_release(struct bcom_task *tsk);
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/* PSC support utility wrappers */
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struct bcom_task * bcom_psc_gen_bd_rx_init(unsigned psc_num, int queue_len,
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phys_addr_t fifo, int maxbufsize);
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struct bcom_task * bcom_psc_gen_bd_tx_init(unsigned psc_num, int queue_len,
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phys_addr_t fifo);
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#endif /* __BESTCOMM_GEN_BD_H__ */
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