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/* |
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* Copyright (C) 2005-2007 Anders Gavare. All rights reserved. |
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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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* $Id: device.c,v 1.34 2007/06/15 17:02:37 debug Exp $ |
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* |
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* Device registry framework. |
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*/ |
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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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|
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#include "device.h" |
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#include "machine.h" |
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#include "memory.h" |
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#include "misc.h" |
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|
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|
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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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|
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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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|
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|
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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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|
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return strcmp(pa->name, pb->name); |
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} |
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|
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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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|
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device_entries_sorted = 1; |
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} |
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|
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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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CHECK_ALLOCATION(device_entries = realloc(device_entries, |
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sizeof(struct device_entry) * (n_device_entries + 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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|
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CHECK_ALLOCATION(device_entries[n_device_entries].name = strdup(name)); |
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device_entries[n_device_entries].initf = initf; |
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|
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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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|
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/* |
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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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CHECK_ALLOCATION(pci_entries = realloc(pci_entries, |
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sizeof(struct pci_entry) * (n_pci_entries + 1))); |
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|
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memset(&pci_entries[n_pci_entries], 0, sizeof(struct pci_entry)); |
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|
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CHECK_ALLOCATION(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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|
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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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void (*pci_lookup_initf(const char *name))(struct machine *machine, |
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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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|
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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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} |
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|
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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; |
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} |
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|
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|
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/* |
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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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int hi, lo; |
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|
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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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|
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if (!device_entries_sorted) |
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sort_entries(); |
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|
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if (n_device_entries == 0) |
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return NULL; |
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|
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lo = 0; hi = n_device_entries - 1; |
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|
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while (lo <= hi) { |
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int r, i = (lo + hi) / 2; |
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|
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/* printf("device_lookup(): i=%i (lo=%i hi=%i)\n", i, lo, hi); |
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printf(" name='%s', '%s'\n", name, |
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device_entries[i].name); */ |
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|
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r = strcmp(name, device_entries[i].name); |
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if (r == 0) { |
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/* Found it! */ |
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return &device_entries[i]; |
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} |
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|
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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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|
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return NULL; |
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} |
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|
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|
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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. |
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*/ |
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int device_unregister(char *name) |
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{ |
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ssize_t i; |
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struct device_entry *p = device_lookup(name); |
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|
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if (p == NULL) { |
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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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|
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i = (size_t)p - (size_t)device_entries; |
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i /= sizeof(struct device_entry); |
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|
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free(device_entries[i].name); |
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device_entries[i].name = NULL; |
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|
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if (i == n_device_entries-1) { |
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/* Do nothing if we're removing the last array element. */ |
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} else { |
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/* Remove array element i by copying the last element |
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to i's position: */ |
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device_entries[i] = device_entries[n_device_entries-1]; |
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|
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/* The array is not sorted anymore: */ |
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device_entries_sorted = 0; |
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} |
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|
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n_device_entries --; |
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|
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/* TODO: realloc? */ |
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return 1; |
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} |
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|
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|
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/* |
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* device_add(): |
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* |
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* Add a device to a machine. For example: "kn210 addr=0x12340000" adds a |
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* device called "kn210" at a specific address. |
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* |
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* TODO: This function is quite ugly, and should be cleaned up. |
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* name_and_params should be const. |
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*/ |
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void *device_add(struct machine *machine, char *name_and_params) |
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{ |
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struct device_entry *p; |
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struct devinit devinit; |
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char *s2, *s3; |
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size_t len, interrupt_path_len = strlen(machine->path) + 100; |
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int quoted; |
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|
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memset(&devinit, 0, sizeof(struct devinit)); |
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devinit.machine = machine; |
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|
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/* Default values: */ |
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devinit.addr_mult = 1; |
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devinit.in_use = 1; |
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|
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/* Get the device name first: */ |
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s2 = name_and_params; |
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while (s2[0] != ',' && s2[0] != ' ' && s2[0] != '\0') |
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s2 ++; |
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|
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len = (size_t)s2 - (size_t)name_and_params; |
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CHECK_ALLOCATION(devinit.name = malloc(len + 1)); |
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memcpy(devinit.name, name_and_params, len); |
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devinit.name[len] = '\0'; |
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|
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/* Allocate space for the default interrupt name: */ |
| 281 |
CHECK_ALLOCATION(devinit.interrupt_path = |
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malloc(interrupt_path_len + 1)); |
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snprintf(devinit.interrupt_path, interrupt_path_len, |
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"%s.cpu[%i]", machine->path, machine->bootstrap_cpu); |
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|
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p = device_lookup(devinit.name); |
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if (p == NULL) { |
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fatal("no such device (\"%s\")\n", devinit.name); |
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if (device_exit_on_error) |
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exit(1); |
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else |
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goto return_fail; |
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} |
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|
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/* Get params from name_and_params: */ |
| 296 |
while (*s2 != '\0') { |
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/* Skip spaces, commas, and semicolons: */ |
| 298 |
while (*s2 == ' ' || *s2 == ',' || *s2 == ';') |
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s2 ++; |
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|
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if (*s2 == '\0') |
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break; |
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|
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/* s2 now points to the next param. eg "addr=1234" */ |
| 305 |
|
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/* Get a word (until there is a '=' sign): */ |
| 307 |
s3 = s2; |
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while (*s3 != '=' && *s3 != '\0') |
| 309 |
s3 ++; |
| 310 |
if (s3 == s2) { |
| 311 |
fatal("weird param: %s\n", s2); |
| 312 |
if (device_exit_on_error) |
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exit(1); |
| 314 |
else |
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goto return_fail; |
| 316 |
} |
| 317 |
s3 ++; |
| 318 |
/* s3 now points to the parameter value ("1234") */ |
| 319 |
|
| 320 |
if (strncmp(s2, "addr=", 5) == 0) { |
| 321 |
devinit.addr = mystrtoull(s3, NULL, 0); |
| 322 |
} else if (strncmp(s2, "addr2=", 6) == 0) { |
| 323 |
devinit.addr2 = mystrtoull(s3, NULL, 0); |
| 324 |
} else if (strncmp(s2, "len=", 4) == 0) { |
| 325 |
devinit.len = mystrtoull(s3, NULL, 0); |
| 326 |
} else if (strncmp(s2, "addr_mult=", 10) == 0) { |
| 327 |
devinit.addr_mult = mystrtoull(s3, NULL, 0); |
| 328 |
} else if (strncmp(s2, "pci_little_endian=", 18) == 0) { |
| 329 |
devinit.pci_little_endian = mystrtoull(s3, NULL, 0); |
| 330 |
switch (devinit.pci_little_endian) { |
| 331 |
case 0: break; |
| 332 |
case 1: devinit.pci_little_endian = |
| 333 |
MEM_PCI_LITTLE_ENDIAN; |
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break; |
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default:fatal("Bad pci_little_endian value.\n"); |
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exit(1); |
| 337 |
} |
| 338 |
} else if (strncmp(s2, "irq=", 4) == 0) { |
| 339 |
snprintf(devinit.interrupt_path, interrupt_path_len,s3); |
| 340 |
if (strchr(devinit.interrupt_path, ' ') != NULL) |
| 341 |
*strchr(devinit.interrupt_path, ' ') = '\0'; |
| 342 |
} else if (strncmp(s2, "in_use=", 7) == 0) { |
| 343 |
devinit.in_use = mystrtoull(s3, NULL, 0); |
| 344 |
} else if (strncmp(s2, "name2=", 6) == 0) { |
| 345 |
char *h = s2 + 6; |
| 346 |
size_t len = 0; |
| 347 |
quoted = 0; |
| 348 |
while (*h) { |
| 349 |
if (*h == '\'') |
| 350 |
quoted = !quoted; |
| 351 |
h++, len++; |
| 352 |
if (!quoted && *h == ' ') |
| 353 |
break; |
| 354 |
} |
| 355 |
CHECK_ALLOCATION(devinit.name2 = malloc(len + 1)); |
| 356 |
h = s2 + 6; |
| 357 |
if (*h == '\'') |
| 358 |
len -= 2, h++; |
| 359 |
snprintf(devinit.name2, len + 1, h); |
| 360 |
} else { |
| 361 |
fatal("unknown param: %s\n", s2); |
| 362 |
if (device_exit_on_error) |
| 363 |
exit(1); |
| 364 |
else |
| 365 |
goto return_fail; |
| 366 |
} |
| 367 |
|
| 368 |
/* skip to the next param: */ |
| 369 |
s2 = s3; |
| 370 |
quoted = 0; |
| 371 |
while (*s2 != '\0' && (*s2 != ' ' || quoted) && |
| 372 |
*s2 != ',' && *s2 != ';') { |
| 373 |
if (*s2 == '\'') |
| 374 |
quoted = !quoted; |
| 375 |
s2 ++; |
| 376 |
} |
| 377 |
} |
| 378 |
|
| 379 |
|
| 380 |
/* |
| 381 |
* Call the init function for this device: |
| 382 |
*/ |
| 383 |
|
| 384 |
devinit.return_ptr = NULL; |
| 385 |
|
| 386 |
if (!p->initf(&devinit)) { |
| 387 |
fatal("error adding device (\"%s\")\n", name_and_params); |
| 388 |
if (device_exit_on_error) |
| 389 |
exit(1); |
| 390 |
else |
| 391 |
goto return_fail; |
| 392 |
} |
| 393 |
|
| 394 |
free(devinit.interrupt_path); |
| 395 |
free(devinit.name); |
| 396 |
return devinit.return_ptr; |
| 397 |
|
| 398 |
return_fail: |
| 399 |
free(devinit.name); |
| 400 |
return NULL; |
| 401 |
} |
| 402 |
|
| 403 |
|
| 404 |
/* |
| 405 |
* device_dumplist(): |
| 406 |
* |
| 407 |
* Dump a list of all registered devices. (If the list is not sorted when |
| 408 |
* this function is called, it is implicitly sorted.) |
| 409 |
*/ |
| 410 |
void device_dumplist(void) |
| 411 |
{ |
| 412 |
int i; |
| 413 |
|
| 414 |
if (!device_entries_sorted) |
| 415 |
sort_entries(); |
| 416 |
|
| 417 |
for (i=0; i<n_device_entries; i++) { |
| 418 |
debug(" %s", device_entries[i].name); |
| 419 |
|
| 420 |
/* TODO: flags? */ |
| 421 |
|
| 422 |
debug("\n"); |
| 423 |
} |
| 424 |
} |
| 425 |
|
| 426 |
|
| 427 |
/* |
| 428 |
* device_set_exit_on_error(): |
| 429 |
* |
| 430 |
* This function selects the behaviour of the emulator when a device is not |
| 431 |
* found. During startup, it is nicest to abort the whole emulator session, |
| 432 |
* but if a device addition is attempted from within the debugger, then it is |
| 433 |
* nicer to just print a warning and continue. |
| 434 |
*/ |
| 435 |
void device_set_exit_on_error(int exit_on_error) |
| 436 |
{ |
| 437 |
device_exit_on_error = exit_on_error; |
| 438 |
} |
| 439 |
|
| 440 |
|
| 441 |
/* |
| 442 |
* device_init(): |
| 443 |
* |
| 444 |
* Initialize the device registry, and call autodev_init() to automatically |
| 445 |
* add all normal devices (from the src/devices/ directory). |
| 446 |
* |
| 447 |
* This function should be called before any other device_*() function is used. |
| 448 |
*/ |
| 449 |
void device_init(void) |
| 450 |
{ |
| 451 |
device_entries = NULL; |
| 452 |
device_entries_sorted = 0; |
| 453 |
n_device_entries = 0; |
| 454 |
|
| 455 |
autodev_init(); |
| 456 |
} |
| 457 |
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