1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * I/O access functions for Hexagon
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <asm/io.h>
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun /* These are all FIFO routines! */
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun /*
13*4882a593Smuzhiyun * __raw_readsw - read words a short at a time
14*4882a593Smuzhiyun * @addr: source address
15*4882a593Smuzhiyun * @data: data address
16*4882a593Smuzhiyun * @len: number of shorts to read
17*4882a593Smuzhiyun */
__raw_readsw(const void __iomem * addr,void * data,int len)18*4882a593Smuzhiyun void __raw_readsw(const void __iomem *addr, void *data, int len)
19*4882a593Smuzhiyun {
20*4882a593Smuzhiyun const volatile short int *src = (short int *) addr;
21*4882a593Smuzhiyun short int *dst = (short int *) data;
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun if ((u32)data & 0x1)
24*4882a593Smuzhiyun panic("unaligned pointer to readsw");
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun while (len-- > 0)
27*4882a593Smuzhiyun *dst++ = *src;
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun EXPORT_SYMBOL(__raw_readsw);
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun /*
33*4882a593Smuzhiyun * __raw_writesw - read words a short at a time
34*4882a593Smuzhiyun * @addr: source address
35*4882a593Smuzhiyun * @data: data address
36*4882a593Smuzhiyun * @len: number of shorts to read
37*4882a593Smuzhiyun */
__raw_writesw(void __iomem * addr,const void * data,int len)38*4882a593Smuzhiyun void __raw_writesw(void __iomem *addr, const void *data, int len)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun const short int *src = (short int *)data;
41*4882a593Smuzhiyun volatile short int *dst = (short int *)addr;
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun if ((u32)data & 0x1)
44*4882a593Smuzhiyun panic("unaligned pointer to writesw");
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun while (len-- > 0)
47*4882a593Smuzhiyun *dst = *src++;
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun }
51*4882a593Smuzhiyun EXPORT_SYMBOL(__raw_writesw);
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun /* Pretty sure len is pre-adjusted for the length of the access already */
__raw_readsl(const void __iomem * addr,void * data,int len)54*4882a593Smuzhiyun void __raw_readsl(const void __iomem *addr, void *data, int len)
55*4882a593Smuzhiyun {
56*4882a593Smuzhiyun const volatile long *src = (long *) addr;
57*4882a593Smuzhiyun long *dst = (long *) data;
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun if ((u32)data & 0x3)
60*4882a593Smuzhiyun panic("unaligned pointer to readsl");
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun while (len-- > 0)
63*4882a593Smuzhiyun *dst++ = *src;
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun }
67*4882a593Smuzhiyun EXPORT_SYMBOL(__raw_readsl);
68*4882a593Smuzhiyun
__raw_writesl(void __iomem * addr,const void * data,int len)69*4882a593Smuzhiyun void __raw_writesl(void __iomem *addr, const void *data, int len)
70*4882a593Smuzhiyun {
71*4882a593Smuzhiyun const long *src = (long *)data;
72*4882a593Smuzhiyun volatile long *dst = (long *)addr;
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun if ((u32)data & 0x3)
75*4882a593Smuzhiyun panic("unaligned pointer to writesl");
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun while (len-- > 0)
78*4882a593Smuzhiyun *dst = *src++;
79*4882a593Smuzhiyun
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun }
82*4882a593Smuzhiyun EXPORT_SYMBOL(__raw_writesl);
83