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dpavlin |
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/* |
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dpavlin |
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* Copyright (C) 2005-2007 Anders Gavare. All rights reserved. |
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dpavlin |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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dpavlin |
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* $Id: device.c,v 1.32 2006/12/30 13:30:51 debug Exp $ |
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dpavlin |
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* |
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* Device registry framework. |
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*/ |
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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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#include "device.h" |
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dpavlin |
34 |
#include "machine.h" |
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dpavlin |
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#include "memory.h" |
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dpavlin |
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#include "misc.h" |
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static struct device_entry *device_entries = NULL; |
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static int device_entries_sorted = 0; |
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static int n_device_entries = 0; |
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static int device_exit_on_error = 1; |
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dpavlin |
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static struct pci_entry *pci_entries = NULL; |
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static int n_pci_entries = 0; |
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dpavlin |
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dpavlin |
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|
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dpavlin |
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/* |
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* device_entry_compar(): |
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* |
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* Internal function, used by sort_entries(). |
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*/ |
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static int device_entry_compar(const void *a, const void *b) |
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{ |
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struct device_entry *pa = (struct device_entry *) a; |
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struct device_entry *pb = (struct device_entry *) b; |
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return strcmp(pa->name, pb->name); |
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} |
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/* |
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* sort_entries(): |
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* |
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* Internal function. Sorts the device_entries array in alphabetic order. |
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*/ |
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static void sort_entries(void) |
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{ |
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qsort(device_entries, n_device_entries, sizeof(struct device_entry), |
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device_entry_compar); |
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device_entries_sorted = 1; |
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} |
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/* |
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* device_register(): |
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* |
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* Registers a device. The device is added to the end of the device_entries |
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* array, and the sorted flag is set to zero. |
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* |
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* NOTE: It would be a bad thing if two devices had the same name. However, |
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* that isn't checked here, it is up to the caller! |
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* |
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* Return value is 1 if the device was registered, 0 otherwise. |
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*/ |
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int device_register(char *name, int (*initf)(struct devinit *)) |
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{ |
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device_entries = realloc(device_entries, sizeof(struct device_entry) |
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* (n_device_entries + 1)); |
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if (device_entries == NULL) { |
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fprintf(stderr, "device_register(): out of memory\n"); |
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exit(1); |
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} |
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memset(&device_entries[n_device_entries], 0, |
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sizeof(struct device_entry)); |
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device_entries[n_device_entries].name = strdup(name); |
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device_entries[n_device_entries].initf = initf; |
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device_entries_sorted = 0; |
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n_device_entries ++; |
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return 1; |
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} |
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/* |
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dpavlin |
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* pci_register(): |
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* |
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* Registers a pci device. The pci device is added to the pci_entries array. |
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* |
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* Return value is 1 if the pci device was registered. If it was not |
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* added, this function does not return. |
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*/ |
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int pci_register(char *name, void (*initf)(struct machine *, struct memory *, |
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struct pci_device *)) |
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{ |
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pci_entries = realloc(pci_entries, sizeof(struct pci_entry) |
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* (n_pci_entries + 1)); |
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if (pci_entries == NULL) { |
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fprintf(stderr, "pci_register(): out of memory\n"); |
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exit(1); |
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} |
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memset(&pci_entries[n_pci_entries], 0, sizeof(struct pci_entry)); |
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pci_entries[n_pci_entries].name = strdup(name); |
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pci_entries[n_pci_entries].initf = initf; |
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n_pci_entries ++; |
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return 1; |
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} |
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/* |
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* pci_lookup_initf(): |
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* |
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* Find a pci device init function by scanning the pci_entries array. |
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* |
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* Return value is a function pointer, or NULL if the name was not found. |
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*/ |
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dpavlin |
22 |
void (*pci_lookup_initf(const char *name))(struct machine *machine, |
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dpavlin |
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struct memory *mem, struct pci_device *pd) |
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{ |
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int i; |
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if (name == NULL) { |
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fprintf(stderr, "pci_lookup_initf(): name = NULL\n"); |
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exit(1); |
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} |
155 |
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for (i=0; i<n_pci_entries; i++) |
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if (strcmp(name, pci_entries[i].name) == 0) |
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return pci_entries[i].initf; |
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return NULL; |
160 |
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} |
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/* |
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dpavlin |
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* device_lookup(): |
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* |
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* Lookup a device name by scanning the device_entries array (as a binary |
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* search tree). |
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* |
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* Return value is a pointer to the device_entry on success, or a NULL pointer |
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* if there was no such device. |
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*/ |
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struct device_entry *device_lookup(char *name) |
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{ |
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dpavlin |
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int hi, lo; |
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dpavlin |
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if (name == NULL) { |
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fprintf(stderr, "device_lookup(): NULL ptr\n"); |
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exit(1); |
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} |
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if (!device_entries_sorted) |
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sort_entries(); |
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if (n_device_entries == 0) |
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return NULL; |
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dpavlin |
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lo = 0; hi = n_device_entries - 1; |
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dpavlin |
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dpavlin |
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while (lo <= hi) { |
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int r, i = (lo + hi) / 2; |
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dpavlin |
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|
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dpavlin |
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/* printf("device_lookup(): i=%i (lo=%i hi=%i)\n", i, lo, hi); |
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dpavlin |
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printf(" name='%s', '%s'\n", name, |
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device_entries[i].name); */ |
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r = strcmp(name, device_entries[i].name); |
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dpavlin |
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if (r == 0) { |
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dpavlin |
2 |
/* Found it! */ |
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return &device_entries[i]; |
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} |
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dpavlin |
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/* Try left or right half: */ |
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if (r < 0) |
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hi = i - 1; |
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if (r > 0) |
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lo = i + 1; |
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} |
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dpavlin |
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dpavlin |
20 |
return NULL; |
210 |
dpavlin |
2 |
} |
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212 |
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/* |
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* device_unregister(): |
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* |
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* Unregisters a device. |
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* |
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* Return value is 1 if a device was unregistered, 0 otherwise. |
219 |
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*/ |
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int device_unregister(char *name) |
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{ |
222 |
dpavlin |
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ssize_t i; |
223 |
dpavlin |
2 |
struct device_entry *p = device_lookup(name); |
224 |
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225 |
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if (p == NULL) { |
226 |
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fatal("device_unregister(): no such device (\"%s\")\n", name); |
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return 0; |
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} |
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i = (size_t)p - (size_t)device_entries; |
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i /= sizeof(struct device_entry); |
232 |
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free(device_entries[i].name); |
234 |
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device_entries[i].name = NULL; |
235 |
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236 |
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if (i == n_device_entries-1) { |
237 |
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/* Do nothing if we're removing the last array element. */ |
238 |
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} else { |
239 |
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/* Remove array element i by copying the last element |
240 |
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to i's position: */ |
241 |
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device_entries[i] = device_entries[n_device_entries-1]; |
242 |
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243 |
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/* The array is not sorted anymore: */ |
244 |
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device_entries_sorted = 0; |
245 |
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} |
246 |
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247 |
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n_device_entries --; |
248 |
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249 |
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/* TODO: realloc? */ |
250 |
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return 1; |
251 |
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} |
252 |
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253 |
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254 |
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/* |
255 |
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* device_add(): |
256 |
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* |
257 |
dpavlin |
10 |
* Add a device to a machine. For example: "kn210 addr=0x12340000" adds a |
258 |
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* device called "kn210" at a specific address. |
259 |
dpavlin |
2 |
* |
260 |
dpavlin |
10 |
* TODO: This function is quite ugly, and should be cleaned up. |
261 |
dpavlin |
24 |
* name_and_params should be const. |
262 |
dpavlin |
2 |
*/ |
263 |
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void *device_add(struct machine *machine, char *name_and_params) |
264 |
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{ |
265 |
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struct device_entry *p; |
266 |
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struct devinit devinit; |
267 |
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char *s2, *s3; |
268 |
dpavlin |
34 |
size_t len, interrupt_path_len = strlen(machine->path) + 100; |
269 |
dpavlin |
22 |
int quoted; |
270 |
dpavlin |
2 |
|
271 |
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memset(&devinit, 0, sizeof(struct devinit)); |
272 |
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devinit.machine = machine; |
273 |
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274 |
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/* Default values: */ |
275 |
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devinit.addr_mult = 1; |
276 |
dpavlin |
12 |
devinit.in_use = 1; |
277 |
dpavlin |
2 |
|
278 |
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/* Get the device name first: */ |
279 |
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s2 = name_and_params; |
280 |
|
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while (s2[0] != ',' && s2[0] != ' ' && s2[0] != '\0') |
281 |
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s2 ++; |
282 |
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283 |
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len = (size_t)s2 - (size_t)name_and_params; |
284 |
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devinit.name = malloc(len + 1); |
285 |
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if (devinit.name == NULL) { |
286 |
|
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fprintf(stderr, "device_add(): out of memory\n"); |
287 |
|
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exit(1); |
288 |
|
|
} |
289 |
|
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memcpy(devinit.name, name_and_params, len); |
290 |
|
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devinit.name[len] = '\0'; |
291 |
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|
292 |
dpavlin |
34 |
/* Allocate space for the default interrupt name: */ |
293 |
|
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devinit.interrupt_path = malloc(interrupt_path_len + 1); |
294 |
|
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if (devinit.interrupt_path == NULL) { |
295 |
|
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fprintf(stderr, "device_add(): out of memory\n"); |
296 |
|
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exit(1); |
297 |
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} |
298 |
|
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snprintf(devinit.interrupt_path, interrupt_path_len, |
299 |
|
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"%s.cpu[%i]", machine->path, machine->bootstrap_cpu); |
300 |
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|
301 |
dpavlin |
2 |
p = device_lookup(devinit.name); |
302 |
|
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if (p == NULL) { |
303 |
|
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fatal("no such device (\"%s\")\n", devinit.name); |
304 |
|
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if (device_exit_on_error) |
305 |
|
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exit(1); |
306 |
|
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else |
307 |
|
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goto return_fail; |
308 |
|
|
} |
309 |
|
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|
310 |
|
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/* Get params from name_and_params: */ |
311 |
|
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while (*s2 != '\0') { |
312 |
|
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/* Skip spaces, commas, and semicolons: */ |
313 |
|
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while (*s2 == ' ' || *s2 == ',' || *s2 == ';') |
314 |
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s2 ++; |
315 |
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|
316 |
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if (*s2 == '\0') |
317 |
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break; |
318 |
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|
319 |
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/* s2 now points to the next param. eg "addr=1234" */ |
320 |
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|
321 |
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/* Get a word (until there is a '=' sign): */ |
322 |
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s3 = s2; |
323 |
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while (*s3 != '=' && *s3 != '\0') |
324 |
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s3 ++; |
325 |
|
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if (s3 == s2) { |
326 |
|
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fatal("weird param: %s\n", s2); |
327 |
|
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if (device_exit_on_error) |
328 |
|
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exit(1); |
329 |
|
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else |
330 |
|
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goto return_fail; |
331 |
|
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} |
332 |
|
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s3 ++; |
333 |
|
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/* s3 now points to the parameter value ("1234") */ |
334 |
|
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|
335 |
|
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if (strncmp(s2, "addr=", 5) == 0) { |
336 |
|
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devinit.addr = mystrtoull(s3, NULL, 0); |
337 |
dpavlin |
20 |
} else if (strncmp(s2, "addr2=", 6) == 0) { |
338 |
|
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devinit.addr2 = mystrtoull(s3, NULL, 0); |
339 |
dpavlin |
2 |
} else if (strncmp(s2, "len=", 4) == 0) { |
340 |
|
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devinit.len = mystrtoull(s3, NULL, 0); |
341 |
|
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} else if (strncmp(s2, "addr_mult=", 10) == 0) { |
342 |
|
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devinit.addr_mult = mystrtoull(s3, NULL, 0); |
343 |
dpavlin |
20 |
} else if (strncmp(s2, "pci_little_endian=", 18) == 0) { |
344 |
|
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devinit.pci_little_endian = mystrtoull(s3, NULL, 0); |
345 |
|
|
switch (devinit.pci_little_endian) { |
346 |
|
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case 0: break; |
347 |
|
|
case 1: devinit.pci_little_endian = |
348 |
|
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MEM_PCI_LITTLE_ENDIAN; |
349 |
|
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break; |
350 |
|
|
default:fatal("Bad pci_little_endian value.\n"); |
351 |
|
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exit(1); |
352 |
|
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} |
353 |
dpavlin |
2 |
} else if (strncmp(s2, "irq=", 4) == 0) { |
354 |
|
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devinit.irq_nr = mystrtoull(s3, NULL, 0); |
355 |
dpavlin |
34 |
|
356 |
|
|
/* New-style interrupt path: */ |
357 |
|
|
snprintf(devinit.interrupt_path, interrupt_path_len,s3); |
358 |
|
|
if (strchr(devinit.interrupt_path, ' ') != NULL) |
359 |
|
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*strchr(devinit.interrupt_path, ' ') = '\0'; |
360 |
|
|
|
361 |
|
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if (strncmp(s3, "none", 4) == 0) |
362 |
|
|
devinit.interrupt_path[0] = '\0'; |
363 |
dpavlin |
12 |
} else if (strncmp(s2, "in_use=", 7) == 0) { |
364 |
|
|
devinit.in_use = mystrtoull(s3, NULL, 0); |
365 |
|
|
} else if (strncmp(s2, "name2=", 6) == 0) { |
366 |
|
|
char *h = s2 + 6; |
367 |
|
|
size_t len = 0; |
368 |
dpavlin |
22 |
quoted = 0; |
369 |
|
|
while (*h) { |
370 |
|
|
if (*h == '\'') |
371 |
|
|
quoted = !quoted; |
372 |
dpavlin |
12 |
h++, len++; |
373 |
dpavlin |
22 |
if (!quoted && *h == ' ') |
374 |
|
|
break; |
375 |
|
|
} |
376 |
dpavlin |
12 |
devinit.name2 = malloc(len + 1); |
377 |
|
|
if (devinit.name2 == NULL) { |
378 |
|
|
fprintf(stderr, "out of memory\n"); |
379 |
|
|
exit(1); |
380 |
|
|
} |
381 |
dpavlin |
22 |
h = s2 + 6; |
382 |
|
|
if (*h == '\'') |
383 |
|
|
len -= 2, h++; |
384 |
|
|
snprintf(devinit.name2, len + 1, h); |
385 |
dpavlin |
2 |
} else { |
386 |
|
|
fatal("unknown param: %s\n", s2); |
387 |
|
|
if (device_exit_on_error) |
388 |
|
|
exit(1); |
389 |
|
|
else |
390 |
|
|
goto return_fail; |
391 |
|
|
} |
392 |
|
|
|
393 |
|
|
/* skip to the next param: */ |
394 |
|
|
s2 = s3; |
395 |
dpavlin |
22 |
quoted = 0; |
396 |
|
|
while (*s2 != '\0' && (*s2 != ' ' || quoted) && |
397 |
|
|
*s2 != ',' && *s2 != ';') { |
398 |
|
|
if (*s2 == '\'') |
399 |
|
|
quoted = !quoted; |
400 |
dpavlin |
2 |
s2 ++; |
401 |
dpavlin |
22 |
} |
402 |
dpavlin |
2 |
} |
403 |
|
|
|
404 |
|
|
|
405 |
|
|
/* |
406 |
|
|
* Call the init function for this device: |
407 |
|
|
*/ |
408 |
|
|
|
409 |
|
|
devinit.return_ptr = NULL; |
410 |
|
|
|
411 |
|
|
if (!p->initf(&devinit)) { |
412 |
|
|
fatal("error adding device (\"%s\")\n", name_and_params); |
413 |
|
|
if (device_exit_on_error) |
414 |
|
|
exit(1); |
415 |
|
|
else |
416 |
|
|
goto return_fail; |
417 |
|
|
} |
418 |
|
|
|
419 |
dpavlin |
34 |
free(devinit.interrupt_path); |
420 |
dpavlin |
2 |
free(devinit.name); |
421 |
|
|
return devinit.return_ptr; |
422 |
|
|
|
423 |
|
|
return_fail: |
424 |
|
|
free(devinit.name); |
425 |
|
|
return NULL; |
426 |
|
|
} |
427 |
|
|
|
428 |
|
|
|
429 |
|
|
/* |
430 |
|
|
* device_dumplist(): |
431 |
|
|
* |
432 |
|
|
* Dump a list of all registered devices. (If the list is not sorted when |
433 |
|
|
* this function is called, it is implicitly sorted.) |
434 |
|
|
*/ |
435 |
|
|
void device_dumplist(void) |
436 |
|
|
{ |
437 |
|
|
int i; |
438 |
|
|
|
439 |
|
|
if (!device_entries_sorted) |
440 |
|
|
sort_entries(); |
441 |
|
|
|
442 |
|
|
for (i=0; i<n_device_entries; i++) { |
443 |
|
|
debug(" %s", device_entries[i].name); |
444 |
|
|
|
445 |
|
|
/* TODO: flags? */ |
446 |
|
|
|
447 |
|
|
debug("\n"); |
448 |
|
|
} |
449 |
|
|
} |
450 |
|
|
|
451 |
|
|
|
452 |
|
|
/* |
453 |
|
|
* device_set_exit_on_error(): |
454 |
dpavlin |
10 |
* |
455 |
|
|
* This function selects the behaviour of the emulator when a device is not |
456 |
|
|
* found. During startup, it is nicest to abort the whole emulator session, |
457 |
|
|
* but if a device addition is attempted from within the debugger, then it is |
458 |
|
|
* nicer to just print a warning and continue. |
459 |
dpavlin |
2 |
*/ |
460 |
|
|
void device_set_exit_on_error(int exit_on_error) |
461 |
|
|
{ |
462 |
|
|
device_exit_on_error = exit_on_error; |
463 |
|
|
} |
464 |
|
|
|
465 |
|
|
|
466 |
|
|
/* |
467 |
|
|
* device_init(): |
468 |
|
|
* |
469 |
|
|
* Initialize the device registry, and call autodev_init() to automatically |
470 |
dpavlin |
10 |
* add all normal devices (from the src/devices/ directory). |
471 |
dpavlin |
2 |
* |
472 |
|
|
* This function should be called before any other device_*() function is used. |
473 |
|
|
*/ |
474 |
|
|
void device_init(void) |
475 |
|
|
{ |
476 |
|
|
device_entries = NULL; |
477 |
|
|
device_entries_sorted = 0; |
478 |
|
|
n_device_entries = 0; |
479 |
|
|
|
480 |
|
|
autodev_init(); |
481 |
|
|
} |
482 |
|
|
|