1 /**
2 Simple IDMA helper functions.
3 */
5 /*
7 Copyright (c) 2012 Kungliga Tekniska Högskolan
8 (Royal Institute of Technology, Stockholm, Sweden).
9 All rights reserved.
11 Redistribution and use in source and binary forms, with or without
12 modification, are permitted provided that the following conditions
13 are met:
15 1. Redistributions of source code must retain the above copyright
16 notice, this list of conditions and the following disclaimer.
18 2. Redistributions in binary form must reproduce the above copyright
19 notice, this list of conditions and the following disclaimer in the
20 documentation and/or other materials provided with the distribution.
22 THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
23 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
26 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 SUCH DAMAGE.
34 */
36 #ifndef RT_IDMA_H
37 #define RT_IDMA_H
39 #include "corepack_regs.h"
41 static inline void
42 idma1_setup(void *dest,
43 const void *source,
44 unsigned size,
45 unsigned fill,
46 unsigned inter,
47 unsigned priority)
48 {
49 uint32_t count;
51 count = size | (fill << 16) | (inter << 28) | (priority << 29);
53 corepack_regs->idma_regs.idma1_source = (uint32_t)source;
54 corepack_regs->idma_regs.idma1_dest = (uint32_t)dest;
55 corepack_regs->idma_regs.idma1_count = count;
56 }
58 static inline uint32_t
59 idma1_status()
60 {
61 return corepack_regs->idma_regs.idma1_stat;
62 }
64 static inline int
65 idma1_done()
66 {
67 return idma1_status() == 0;
68 }
70 #endif