mirror of
https://github.com/autc04/Retro68.git
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120 lines
3.7 KiB
C
120 lines
3.7 KiB
C
/*
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* Copyright (c) 2011 Aeroflex Gaisler
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*
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* BSD license:
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <asm-leon/leon.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/*#define DEBUG_CONFIG*/
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/* Structure containing address to devices found on the Amba Plug&Play bus */
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extern amba_confarea_type amba_conf;
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/*collect apb slaves*/
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int
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amba_get_free_apbslv_devices (int vendor, int device, amba_apb_device * dev,
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int nr)
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{
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unsigned int i, conf, iobar, j = 0;
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#ifdef DEBUG_CONFIG
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printf ("Apbslv: search for apdslv devices\n");
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#endif
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for (i = 0; i < amba_conf.apbslv.devnr && j < nr; i++)
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{
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conf = amba_get_confword (amba_conf.apbslv, i, 0);
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#ifdef DEBUG_CONFIG
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printf ("Apbslv: check(%x:%x)==(%x:%x)\n", vendor, device,
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amba_vendor (conf), amba_device (conf));
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#endif
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if ((amba_vendor (conf) == vendor) && (amba_device (conf) == device))
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{
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if (!(amba_conf.apbslv.allocbits[i / 32] & (1 << (i & (32 - 1)))))
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{
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#ifdef DEBUG_CONFIG
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printf ("Apbslv: alloc device idx %i (%x:%x)\n",
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j, vendor, device);
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#endif
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amba_conf.apbslv.allocbits[i / 32] |= (1 << (i & (32 - 1)));
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dev[j].irq = amba_irq (conf);
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iobar = amba_apb_get_membar (amba_conf.apbslv, i);
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dev[j].start =
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amba_iobar_start (amba_conf.apbslv.apbmst[i], iobar);
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#ifdef DEBUG_CONFIG
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printf (" +bar: 0x%x \n", k, dev[j].start);
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#endif
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j++;
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}
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}
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}
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return j;
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}
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/*collect ahb slaves*/
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int
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amba_get_free_ahbslv_devices (int vendor, int device, amba_ahb_device * dev,
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int nr)
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{
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unsigned int addr, i, conf, iobar, j = 0, k;
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#ifdef DEBUG_CONFIG
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printf ("Ahbslv: search for ahdslv devices\n");
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#endif
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for (i = 0; i < amba_conf.ahbslv.devnr && j < nr; i++)
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{
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conf = amba_get_confword (amba_conf.ahbslv, i, 0);
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#ifdef DEBUG_CONFIG
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printf ("Ahbslv: check(%x:%x)==(%x:%x)\n", vendor, device,
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amba_vendor (conf), amba_device (conf));
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#endif
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if ((amba_vendor (conf) == vendor) && (amba_device (conf) == device))
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{
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if (!(amba_conf.ahbslv.allocbits[i / 32] & (1 << (i & (32 - 1)))))
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{
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#ifdef DEBUG_CONFIG
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printf ("Ahbslv: alloc device idx %i (%x:%x)\n",
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j, vendor, device);
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#endif
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amba_conf.ahbslv.allocbits[i / 32] |= (1 << (i & (32 - 1)));
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dev[j].irq = amba_irq (conf);
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for (k = 0; k < 4; k++)
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{
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iobar = amba_ahb_get_membar (amba_conf.ahbslv, i, k);
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addr = amba_membar_start (iobar);
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if (amba_membar_type (iobar) == AMBA_TYPE_AHBIO)
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{
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addr = AMBA_TYPE_AHBIO_ADDR (addr);
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}
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dev[j].start[k] = addr;
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#ifdef DEBUG_CONFIG
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printf (" +%i: 0x%x \n", k, dev[j].start[k]);
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#endif
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}
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j++;
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}
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}
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}
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return j;
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}
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