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Diffstat (limited to 'tools/cpu/nios2/bridges.c')
-rw-r--r-- | tools/cpu/nios2/bridges.c | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/tools/cpu/nios2/bridges.c b/tools/cpu/nios2/bridges.c deleted file mode 100644 index feb90f9971..0000000000 --- a/tools/cpu/nios2/bridges.c +++ /dev/null @@ -1,112 +0,0 @@ -/* - * Copyright (c) 2006 Kolja Waschk rtemsdev/ixo.de - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - */ - -/********************************************************/ -/* Find bus bridges */ - -/* This part of the program builds a list with pairs of bus - master port names (each is "device name/master port name"). - It is then possible to find if a given master is actually - available under a different master port name through bridges. - */ - -/* Typical example with external SRAM that is slave of - tristate_bridge_0/tristate_master, and - tristate_bridge_0 itself is slave of cpu0/data_master, the - bridge information would be stored as this bus_bridge_pair: - mastered_by = "cpu0/data_master" and - bridges_to = "tristate_bridge_0/tristate_master". - That allows to deduce that SRAM is actually mastered by - cpu0/data_master. If there were any address or bus width - translations, it should be noted in the bridges list... For - now we simply assume that bridges never translate anything. - */ - -#include <string.h> -#include <stdlib.h> - -#include "ptf.h" -#include "bridges.h" - -int is_bridged( - char *cpu_master, - char *dev_master, - bus_bridge_pair *bridges) -{ - char *curr_master; - bus_bridge_pair *bbp; - - if(strcmp(cpu_master, dev_master) == 0) return 1; /* cpu directly masters dev */ - - for(bbp = bridges; bbp != NULL; bbp=bbp->next) - { - if(strcmp(cpu_master, bbp->mastered_by) == 0 && - is_bridged(bbp->bridges_to, dev_master, bridges)) - { - return 1; /* cpu masters dev via bridge */ - } - }; - - return 0; -} - -void add_bridge_master(struct ptf_item *pi, void *arg) -{ - struct { char *bt; bus_bridge_pair **bridges; } *binfo = arg; - bus_bridge_pair *new_pair; - - if(binfo->bridges == 0) return; - - new_pair = (bus_bridge_pair *)malloc(sizeof(bus_bridge_pair)); - if(new_pair == NULL) return; - - new_pair->bridges_to = binfo->bt; - new_pair->mastered_by = pi->item[pi->level]->value; - new_pair->next = *(binfo->bridges); - *(binfo->bridges) = new_pair; -} - -void add_bridge_dest(struct ptf_item *pi, void *arg) -{ - struct ptf maby_section = { section, "MASTERED_BY", 0, 0, 0 }; - struct ptf_item maby = { 1, &maby_section }; - - char *bridge_name = pi->item[1]->value; - char *bridge_dest = pi->item[pi->level]->value; - struct { char *bt; bus_bridge_pair **bridges; } binfo; - - binfo.bridges = arg; - binfo.bt = (char*)malloc(strlen(bridge_name)+strlen(bridge_dest) + 2); - strcpy(binfo.bt, bridge_name); - strcat(binfo.bt, "/"); - strcat(binfo.bt, bridge_dest); - - ptf_match(pi->item[pi->level-1]->sub, &maby, add_bridge_master, &binfo); - - /* binfo.bt is NOT freed here */ -} - -bus_bridge_pair *find_bridges(struct ptf *p) -{ - bus_bridge_pair *bridges = 0; - - struct ptf system = { section, "SYSTEM", 0, 0, 0 }; - struct ptf module = { section, "MODULE", 0, 0, 0 }; - struct ptf slave = { section, "SLAVE", 0, 0, 0 }; - struct ptf syb = { section, "SYSTEM_BUILDER_INFO", 0, 0, 0 }; - struct ptf to = { item, "Bridges_To", 0, 0, 0 }; - struct ptf_item brdg = { 5, &system, &module, &slave, &syb, &to }; - - ptf_match(p, &brdg, add_bridge_dest, &bridges); - - return bridges; -} - - - - |