1 /*
2 * Copyright (c) 2011 Aeroflex Gaisler
3 *
4 * BSD license:
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25
26 #include <asm-leon/leon.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30
31 /*#define DEBUG_CONFIG*/
32
33 /* Structure containing address to devices found on the Amba Plug&Play bus */
34 extern amba_confarea_type amba_conf;
35
36 /*collect apb slaves*/
37 int
amba_get_free_apbslv_devices(int vendor,int device,amba_apb_device * dev,int nr)38 amba_get_free_apbslv_devices (int vendor, int device, amba_apb_device * dev,
39 int nr)
40 {
41 unsigned int i, conf, iobar, j = 0;
42 #ifdef DEBUG_CONFIG
43 printf ("Apbslv: search for apdslv devices\n");
44 #endif
45 for (i = 0; i < amba_conf.apbslv.devnr && j < nr; i++)
46 {
47 conf = amba_get_confword (amba_conf.apbslv, i, 0);
48 #ifdef DEBUG_CONFIG
49 printf ("Apbslv: check(%x:%x)==(%x:%x)\n", vendor, device,
50 amba_vendor (conf), amba_device (conf));
51 #endif
52 if ((amba_vendor (conf) == vendor) && (amba_device (conf) == device))
53 {
54 if (!(amba_conf.apbslv.allocbits[i / 32] & (1 << (i & (32 - 1)))))
55 {
56 #ifdef DEBUG_CONFIG
57 printf ("Apbslv: alloc device idx %i (%x:%x)\n",
58 j, vendor, device);
59 #endif
60 amba_conf.apbslv.allocbits[i / 32] |= (1 << (i & (32 - 1)));
61 dev[j].irq = amba_irq (conf);
62 iobar = amba_apb_get_membar (amba_conf.apbslv, i);
63 dev[j].start =
64 amba_iobar_start (amba_conf.apbslv.apbmst[i], iobar);
65 #ifdef DEBUG_CONFIG
66 printf (" +bar: 0x%x \n", k, dev[j].start);
67 #endif
68 j++;
69 }
70 }
71 }
72 return j;
73 }
74
75 /*collect ahb slaves*/
76 int
amba_get_free_ahbslv_devices(int vendor,int device,amba_ahb_device * dev,int nr)77 amba_get_free_ahbslv_devices (int vendor, int device, amba_ahb_device * dev,
78 int nr)
79 {
80 unsigned int addr, i, conf, iobar, j = 0, k;
81 #ifdef DEBUG_CONFIG
82 printf ("Ahbslv: search for ahdslv devices\n");
83 #endif
84 for (i = 0; i < amba_conf.ahbslv.devnr && j < nr; i++)
85 {
86 conf = amba_get_confword (amba_conf.ahbslv, i, 0);
87 #ifdef DEBUG_CONFIG
88 printf ("Ahbslv: check(%x:%x)==(%x:%x)\n", vendor, device,
89 amba_vendor (conf), amba_device (conf));
90 #endif
91 if ((amba_vendor (conf) == vendor) && (amba_device (conf) == device))
92 {
93 if (!(amba_conf.ahbslv.allocbits[i / 32] & (1 << (i & (32 - 1)))))
94 {
95 #ifdef DEBUG_CONFIG
96 printf ("Ahbslv: alloc device idx %i (%x:%x)\n",
97 j, vendor, device);
98 #endif
99 amba_conf.ahbslv.allocbits[i / 32] |= (1 << (i & (32 - 1)));
100 dev[j].irq = amba_irq (conf);
101 for (k = 0; k < 4; k++)
102 {
103 iobar = amba_ahb_get_membar (amba_conf.ahbslv, i, k);
104 addr = amba_membar_start (iobar);
105 if (amba_membar_type (iobar) == AMBA_TYPE_AHBIO)
106 {
107 addr = AMBA_TYPE_AHBIO_ADDR (addr);
108 }
109 dev[j].start[k] = addr;
110 #ifdef DEBUG_CONFIG
111 printf (" +%i: 0x%x \n", k, dev[j].start[k]);
112 #endif
113 }
114 j++;
115 }
116 }
117 }
118 return j;
119 }
120