| /* |
| * The PCI Library -- Parameters |
| * |
| * Copyright (c) 2008 Martin Mares <mj@ucw.cz> |
| * |
| * Can be freely distributed and used under the terms of the GNU GPL. |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "internal.h" |
| |
| char * |
| pci_get_param(struct pci_access *acc, char *param) |
| { |
| struct pci_param *p; |
| |
| for (p=acc->params; p; p=p->next) |
| if (!strcmp(p->param, param)) |
| return p->value; |
| return NULL; |
| } |
| |
| void |
| pci_define_param(struct pci_access *acc, char *param, char *value, char *help) |
| { |
| struct pci_param *p = pci_malloc(acc, sizeof(*p)); |
| |
| p->next = acc->params; |
| acc->params = p; |
| p->param = param; |
| p->value = value; |
| p->value_malloced = 0; |
| p->help = help; |
| } |
| |
| int |
| pci_set_param_internal(struct pci_access *acc, char *param, char *value, int copy) |
| { |
| struct pci_param *p; |
| |
| for (p=acc->params; p; p=p->next) |
| if (!strcmp(p->param, param)) |
| { |
| if (p->value_malloced) |
| pci_mfree(p->value); |
| p->value_malloced = copy; |
| if (copy) |
| p->value = pci_strdup(acc, value); |
| else |
| p->value = value; |
| return 0; |
| } |
| return -1; |
| } |
| |
| int |
| pci_set_param(struct pci_access *acc, char *param, char *value) |
| { |
| return pci_set_param_internal(acc, param, value, 1); |
| } |
| |
| void |
| pci_free_params(struct pci_access *acc) |
| { |
| struct pci_param *p; |
| |
| while (p = acc->params) |
| { |
| acc->params = p->next; |
| if (p->value_malloced) |
| pci_mfree(p->value); |
| pci_mfree(p); |
| } |
| } |
| |
| struct pci_param * |
| pci_walk_params(struct pci_access *acc, struct pci_param *prev) |
| { |
| /* So far, the params form a simple linked list, but this can change in the future */ |
| if (!prev) |
| return acc->params; |
| else |
| return prev->next; |
| } |