8a962f23f2
the original ad-audiomp branch notes: Add MP locking to the audio drivers. Making the audio drivers MP safe is necessary before efforts can be made to make the VM system MP safe. The are two locks per device instance, an ISR lock and a character device lock. The ISR lock replaces calls to splaudio()/splx(), and will be held across calls to device methods which were called at splaudio() before (e.g. trigger_output). The character device lock is held across calls to nearly all of the methods, excluding some only used for initialization, e.g. get_locks. Welcome to 5.99.57.
156 lines
4.8 KiB
C
156 lines
4.8 KiB
C
/* $NetBSD: pxa2x0_dmac.h,v 1.4 2011/11/23 23:07:29 jmcneill Exp $ */
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/*
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* Copyright (c) 2003, 2005 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Steve C. Woodford for Wasabi Systems, Inc.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __PXA2X0_DMAC_H
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#define __PXA2X0_DMAC_H
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typedef u_int dmac_peripheral_t;
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#define DMAC_PERIPH_NONE (~0)
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#define DMAC_PERIPH_DREQ0 0
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#define DMAC_PERIPH_DREQ1 1
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#define DMAC_PERIPH_I2SRX 2
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#define DMAC_PERIPH_I2STX 3
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#define DMAC_PERIPH_BTUARTRX 4
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#define DMAC_PERIPH_BTUARTTX 5
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#define DMAC_PERIPH_FFUARTRX 6
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#define DMAC_PERIPH_FFUARTTX 7
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#define DMAC_PERIPH_AC97MIC 8
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#define DMAC_PERIPH_AC97MODEMRX 9
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#define DMAC_PERIPH_AC97MODEMTX 10
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#define DMAC_PERIPH_AC97AUDIORX 11
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#define DMAC_PERIPH_AC97AUDIOTX 12
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#define DMAC_PERIPH_SSPRX 13
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#define DMAC_PERIPH_SSPTX 14
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#define DMAC_PERIPH_FICPRX 17
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#define DMAC_PERIPH_FICPTX 18
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#define DMAC_PERIPH_STUARTRX 19
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#define DMAC_PERIPH_STUARTTX 20
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#define DMAC_PERIPH_MMCRX 21
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#define DMAC_PERIPH_MMCTX 22
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#define DMAC_PERIPH_USBEP(n) (24+(n)) /* for endpoint 1..4,6..9,11..14 */
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#define DMAC_N_PERIPH 40
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typedef enum {
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#define DMAC_PRIORITY_NORMAL DMAC_PRIORITY_LOW
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DMAC_PRIORITY_LOW = 0,
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DMAC_PRIORITY_MED,
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DMAC_PRIORITY_HIGH
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} dmac_priority_t;
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typedef enum {
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DMAC_FLOW_CTRL_NONE,
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DMAC_FLOW_CTRL_SRC,
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DMAC_FLOW_CTRL_DEST
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} dmac_flow_ctrl_t;
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typedef enum {
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DMAC_DEV_WIDTH_DEFAULT = 0,
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DMAC_DEV_WIDTH_1,
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DMAC_DEV_WIDTH_2,
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DMAC_DEV_WIDTH_4
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} dmac_dev_width_t;
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typedef enum {
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DMAC_BURST_SIZE_8 = 1,
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DMAC_BURST_SIZE_16,
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DMAC_BURST_SIZE_32
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} dmac_burst_size_t;
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struct dmac_xfer_desc {
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/*
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* Hold the source/destination address.
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* Note that if this is TRUE, then xd_nsegs must be at least '1',
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* and the first dma segment in xd_dma_segs must have a non-zero
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* ds_len field.
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*/
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bool xd_addr_hold;
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u_int xd_nsegs;
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bus_dma_segment_t *xd_dma_segs;
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};
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struct dmac_xfer {
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/*
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* The following fields must be initialised by clients of the
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* DMAC driver.
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* The DMAC driver treats all these fields as Read-Only.
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*/
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/* Client-specific cookie for this request */
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void *dx_cookie;
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/* Client function to invoke when the transfer completes */
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void (*dx_done)(struct dmac_xfer *, int);
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/* Priority to assign to the transfer */
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dmac_priority_t dx_priority;
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/* Peripheral device involved in the transfer */
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dmac_peripheral_t dx_peripheral;
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/* Flow Control */
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dmac_flow_ctrl_t dx_flow;
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/* Device width */
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dmac_dev_width_t dx_dev_width;
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/* Burst size */
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dmac_burst_size_t dx_burst_size;
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/* Loop notification period */
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size_t dx_loop_notify;
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/*
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* Initialise dx_loop_notify to the following value if you do not
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* need to use the looping facility of the DMA engine. (Looping is
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* primarily for use by the AC97 driver, but may be of interest to
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* other drivers...)
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*/
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#define DMAC_DONT_LOOP 0
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/* Source/Destination descriptors */
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struct dmac_xfer_desc dx_desc[2];
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#define DMAC_DESC_SRC 0
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#define DMAC_DESC_DST 1
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};
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extern struct dmac_xfer *pxa2x0_dmac_allocate_xfer(void);
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extern void pxa2x0_dmac_free_xfer(struct dmac_xfer *);
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extern int pxa2x0_dmac_start_xfer(struct dmac_xfer *);
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extern void pxa2x0_dmac_abort_xfer(struct dmac_xfer *);
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#endif /* __PXA2X0_DMAC_H */
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