trunk/src/device.c

/*
 *  Copyright (C) 2005-2007  Anders Gavare.  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright  
 *     notice, this list of conditions and the following disclaimer in the 
 *     documentation and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 *  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 *  ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE   
 *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 *  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 *  OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 *  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 *  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 *  OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 *  SUCH DAMAGE.
 *
 *
 *  $Id: device.c,v 1.32 2006/12/30 13:30:51 debug Exp $
 *
 *  Device registry framework.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "device.h"
#include "machine.h"
#include "memory.h"
#include "misc.h"


static struct device_entry *device_entries = NULL;
static int device_entries_sorted = 0;
static int n_device_entries = 0;
static int device_exit_on_error = 1;

static struct pci_entry *pci_entries = NULL;
static int n_pci_entries = 0;


/*
 *  device_entry_compar():
 *
 *  Internal function, used by sort_entries().
 */
static int device_entry_compar(const void *a, const void *b)
{
        struct device_entry *pa = (struct device_entry *) a;
        struct device_entry *pb = (struct device_entry *) b;

        return strcmp(pa->name, pb->name);
}


/*
 *  sort_entries():
 *
 *  Internal function. Sorts the device_entries array in alphabetic order.
 */
static void sort_entries(void)
{
        qsort(device_entries, n_device_entries, sizeof(struct device_entry),
            device_entry_compar);

        device_entries_sorted = 1;
}


/*
 *  device_register():
 *
 *  Registers a device. The device is added to the end of the device_entries
 *  array, and the sorted flag is set to zero.
 *
 *  NOTE: It would be a bad thing if two devices had the same name. However,
 *        that isn't checked here, it is up to the caller!
 *
 *  Return value is 1 if the device was registered, 0 otherwise.
 */
int device_register(char *name, int (*initf)(struct devinit *))
{
        device_entries = realloc(device_entries, sizeof(struct device_entry)
            * (n_device_entries + 1));
        if (device_entries == NULL) {
                fprintf(stderr, "device_register(): out of memory\n");
                exit(1);
        }

        memset(&device_entries[n_device_entries], 0,
            sizeof(struct device_entry));

        device_entries[n_device_entries].name = strdup(name);
        device_entries[n_device_entries].initf = initf;

        device_entries_sorted = 0;
        n_device_entries ++;
        return 1;
}


/*
 *  pci_register():
 *
 *  Registers a pci device. The pci device is added to the pci_entries array.
 *
 *  Return value is 1 if the pci device was registered. If it was not
 *  added, this function does not return.
 */
int pci_register(char *name, void (*initf)(struct machine *, struct memory *,
        struct pci_device *))
{
        pci_entries = realloc(pci_entries, sizeof(struct pci_entry)
            * (n_pci_entries + 1));
        if (pci_entries == NULL) {
                fprintf(stderr, "pci_register(): out of memory\n");
                exit(1);
        }

        memset(&pci_entries[n_pci_entries], 0, sizeof(struct pci_entry));

        pci_entries[n_pci_entries].name = strdup(name);
        pci_entries[n_pci_entries].initf = initf;
        n_pci_entries ++;
        return 1;
}


/*
 *  pci_lookup_initf():
 *
 *  Find a pci device init function by scanning the pci_entries array.
 *
 *  Return value is a function pointer, or NULL if the name was not found.
 */
void (*pci_lookup_initf(const char *name))(struct machine *machine,
        struct memory *mem, struct pci_device *pd)
{
        int i;

        if (name == NULL) {
                fprintf(stderr, "pci_lookup_initf(): name = NULL\n");
                exit(1);
        }

        for (i=0; i<n_pci_entries; i++)
                if (strcmp(name, pci_entries[i].name) == 0)
                        return pci_entries[i].initf;
        return NULL;
}


/*
 *  device_lookup():
 *
 *  Lookup a device name by scanning the device_entries array (as a binary
 *  search tree).
 *
 *  Return value is a pointer to the device_entry on success, or a NULL pointer
 *  if there was no such device.
 */
struct device_entry *device_lookup(char *name)
{
        int hi, lo;

        if (name == NULL) {
                fprintf(stderr, "device_lookup(): NULL ptr\n");
                exit(1);
        }

        if (!device_entries_sorted)
                sort_entries();

        if (n_device_entries == 0)
                return NULL;

        lo = 0; hi = n_device_entries - 1;

        while (lo <= hi) {
                int r, i = (lo + hi) / 2;

                /*  printf("device_lookup(): i=%i (lo=%i hi=%i)\n", i, lo, hi);
                    printf("  name='%s', '%s'\n", name,
                    device_entries[i].name);  */

                r = strcmp(name, device_entries[i].name);
                if (r == 0) {
                        /*  Found it!  */
                        return &device_entries[i];
                }

                /*  Try left or right half:  */
                if (r < 0)
                        hi = i - 1;
                if (r > 0)
                        lo = i + 1;
        }

        return NULL;
}


/*
 *  device_unregister():
 *
 *  Unregisters a device.
 *
 *  Return value is 1 if a device was unregistered, 0 otherwise.
 */
int device_unregister(char *name)
{
        ssize_t i;
        struct device_entry *p = device_lookup(name);

        if (p == NULL) {
                fatal("device_unregister(): no such device (\"%s\")\n", name);
                return 0;
        }

        i = (size_t)p - (size_t)device_entries;
        i /= sizeof(struct device_entry);

        free(device_entries[i].name);
        device_entries[i].name = NULL;

        if (i == n_device_entries-1) {
                /*  Do nothing if we're removing the last array element.  */
        } else {
                /*  Remove array element i by copying the last element
                    to i's position:  */
                device_entries[i] = device_entries[n_device_entries-1];

                /*  The array is not sorted anymore:  */
                device_entries_sorted = 0;
        }

        n_device_entries --;

        /*  TODO: realloc?  */
        return 1;
}


/*
 *  device_add():
 *
 *  Add a device to a machine. For example: "kn210 addr=0x12340000" adds a
 *  device called "kn210" at a specific address.
 *
 *  TODO: This function is quite ugly, and should be cleaned up.
 *  name_and_params should be const.
 */
void *device_add(struct machine *machine, char *name_and_params)
{
        struct device_entry *p;
        struct devinit devinit;
        char *s2, *s3;
        size_t len, interrupt_path_len = strlen(machine->path) + 100;
        int quoted;

        memset(&devinit, 0, sizeof(struct devinit));
        devinit.machine = machine;

        /*  Default values:  */
        devinit.addr_mult = 1;
        devinit.in_use = 1;

        /*  Get the device name first:  */
        s2 = name_and_params;
        while (s2[0] != ',' && s2[0] != ' ' && s2[0] != '\0')
                s2 ++;

        len = (size_t)s2 - (size_t)name_and_params;
        devinit.name = malloc(len + 1);
        if (devinit.name == NULL) {
                fprintf(stderr, "device_add(): out of memory\n");
                exit(1);
        }
        memcpy(devinit.name, name_and_params, len);
        devinit.name[len] = '\0';

        /*  Allocate space for the default interrupt name:  */
        devinit.interrupt_path = malloc(interrupt_path_len + 1);
        if (devinit.interrupt_path == NULL) {
                fprintf(stderr, "device_add(): out of memory\n");
                exit(1);
        }
        snprintf(devinit.interrupt_path, interrupt_path_len,
            "%s.cpu[%i]", machine->path, machine->bootstrap_cpu);

        p = device_lookup(devinit.name);
        if (p == NULL) {
                fatal("no such device (\"%s\")\n", devinit.name);
                if (device_exit_on_error)
                        exit(1);
                else
                        goto return_fail;
        }

        /*  Get params from name_and_params:  */
        while (*s2 != '\0') {
                /*  Skip spaces, commas, and semicolons:  */
                while (*s2 == ' ' || *s2 == ',' || *s2 == ';')
                        s2 ++;

                if (*s2 == '\0')
                        break;

                /*  s2 now points to the next param. eg "addr=1234"  */

                /*  Get a word (until there is a '=' sign):  */
                s3 = s2;
                while (*s3 != '=' && *s3 != '\0')
                        s3 ++;
                if (s3 == s2) {
                        fatal("weird param: %s\n", s2);
                        if (device_exit_on_error)
                                exit(1);
                        else
                                goto return_fail;
                }
                s3 ++;
                /*  s3 now points to the parameter value ("1234")  */

                if (strncmp(s2, "addr=", 5) == 0) {
                        devinit.addr = mystrtoull(s3, NULL, 0);
                } else if (strncmp(s2, "addr2=", 6) == 0) {
                        devinit.addr2 = mystrtoull(s3, NULL, 0);
                } else if (strncmp(s2, "len=", 4) == 0) {
                        devinit.len = mystrtoull(s3, NULL, 0);
                } else if (strncmp(s2, "addr_mult=", 10) == 0) {
                        devinit.addr_mult = mystrtoull(s3, NULL, 0);
                } else if (strncmp(s2, "pci_little_endian=", 18) == 0) {
                        devinit.pci_little_endian = mystrtoull(s3, NULL, 0);
                        switch (devinit.pci_little_endian) {
                        case 0: break;
                        case 1: devinit.pci_little_endian =
                                    MEM_PCI_LITTLE_ENDIAN;
                                break;
                        default:fatal("Bad pci_little_endian value.\n");
                                exit(1);
                        }
                } else if (strncmp(s2, "irq=", 4) == 0) {
                        devinit.irq_nr = mystrtoull(s3, NULL, 0);

                        /*  New-style interrupt path:  */
                        snprintf(devinit.interrupt_path, interrupt_path_len,s3);
                        if (strchr(devinit.interrupt_path, ' ') != NULL)
                                *strchr(devinit.interrupt_path, ' ') = '\0';

                        if (strncmp(s3, "none", 4) == 0)
                                devinit.interrupt_path[0] = '\0';
                } else if (strncmp(s2, "in_use=", 7) == 0) {
                        devinit.in_use = mystrtoull(s3, NULL, 0);
                } else if (strncmp(s2, "name2=", 6) == 0) {
                        char *h = s2 + 6;
                        size_t len = 0;
                        quoted = 0;
                        while (*h) {
                                if (*h == '\'')
                                        quoted = !quoted;
                                h++, len++;
                                if (!quoted && *h == ' ')
                                        break;
                        }
                        devinit.name2 = malloc(len + 1);
                        if (devinit.name2 == NULL) {
                                fprintf(stderr, "out of memory\n");
                                exit(1);
                        }
                        h = s2 + 6;
                        if (*h == '\'')
                                len -= 2, h++;
                        snprintf(devinit.name2, len + 1, h);
                } else {
                        fatal("unknown param: %s\n", s2);
                        if (device_exit_on_error)
                                exit(1);
                        else
                                goto return_fail;
                }

                /*  skip to the next param:  */
                s2 = s3;
                quoted = 0;
                while (*s2 != '\0' && (*s2 != ' ' || quoted) &&
                    *s2 != ',' && *s2 != ';') {
                        if (*s2 == '\'')
                                quoted = !quoted;
                        s2 ++;
                }
        }


        /*
         *  Call the init function for this device:
         */

        devinit.return_ptr = NULL;

        if (!p->initf(&devinit)) {
                fatal("error adding device (\"%s\")\n", name_and_params);
                if (device_exit_on_error)
                        exit(1);
                else
                        goto return_fail;
        }

        free(devinit.interrupt_path);
        free(devinit.name);
        return devinit.return_ptr;

return_fail:
        free(devinit.name);
        return NULL;
}


/*
 *  device_dumplist():
 *
 *  Dump a list of all registered devices.  (If the list is not sorted when
 *  this function is called, it is implicitly sorted.)
 */
void device_dumplist(void)
{
        int i;

        if (!device_entries_sorted)
                sort_entries();

        for (i=0; i<n_device_entries; i++) {
                debug("  %s", device_entries[i].name);

                /*  TODO: flags?  */

                debug("\n");
        }
}


/*
 *  device_set_exit_on_error():
 *
 *  This function selects the behaviour of the emulator when a device is not
 *  found. During startup, it is nicest to abort the whole emulator session,
 *  but if a device addition is attempted from within the debugger, then it is
 *  nicer to just print a warning and continue.
 */
void device_set_exit_on_error(int exit_on_error)
{
        device_exit_on_error = exit_on_error;
}


/*
 *  device_init():
 *
 *  Initialize the device registry, and call autodev_init() to automatically
 *  add all normal devices (from the src/devices/ directory).
 *
 *  This function should be called before any other device_*() function is used.
 */
void device_init(void)
{
        device_entries = NULL;
        device_entries_sorted = 0;
        n_device_entries = 0;

        autodev_init();
}

1	/*
2	* Copyright (C) 2005-2007 Anders Gavare. All rights reserved.
3	*
4	* Redistribution and use in source and binary forms, with or without
5	* modification, are permitted provided that the following conditions are met:
6	*
7	* 1. Redistributions of source code must retain the above copyright
8	* notice, this list of conditions and the following disclaimer.
9	* 2. Redistributions in binary form must reproduce the above copyright
10	* notice, this list of conditions and the following disclaimer in the
11	* documentation and/or other materials provided with the distribution.
12	* 3. The name of the author may not be used to endorse or promote products
13	* derived from this software without specific prior written permission.
14	*
15	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25	* SUCH DAMAGE.
26	*
27	*
28	* $Id: device.c,v 1.32 2006/12/30 13:30:51 debug Exp $
29	*
30	* Device registry framework.
31	*/
32
33	#include <stdio.h>
34	#include <stdlib.h>
35	#include <string.h>
36
37	#include "device.h"
38	#include "machine.h"
39	#include "memory.h"
40	#include "misc.h"
41
42
43	static struct device_entry *device_entries = NULL;
44	static int device_entries_sorted = 0;
45	static int n_device_entries = 0;
46	static int device_exit_on_error = 1;
47
48	static struct pci_entry *pci_entries = NULL;
49	static int n_pci_entries = 0;
50
51
52	/*
53	* device_entry_compar():
54	*
55	* Internal function, used by sort_entries().
56	*/
57	static int device_entry_compar(const void a, const void b)
58	{
59	struct device_entry pa = (struct device_entry ) a;
60	struct device_entry pb = (struct device_entry ) b;
61
62	return strcmp(pa->name, pb->name);
63	}
64
65
66	/*
67	* sort_entries():
68	*
69	* Internal function. Sorts the device_entries array in alphabetic order.
70	*/
71	static void sort_entries(void)
72	{
73	qsort(device_entries, n_device_entries, sizeof(struct device_entry),
74	device_entry_compar);
75
76	device_entries_sorted = 1;
77	}
78
79
80	/*
81	* device_register():
82	*
83	* Registers a device. The device is added to the end of the device_entries
84	* array, and the sorted flag is set to zero.
85	*
86	* NOTE: It would be a bad thing if two devices had the same name. However,
87	* that isn't checked here, it is up to the caller!
88	*
89	* Return value is 1 if the device was registered, 0 otherwise.
90	*/
91	int device_register(char name, int (initf)(struct devinit *))
92	{
93	device_entries = realloc(device_entries, sizeof(struct device_entry)
94	* (n_device_entries + 1));
95	if (device_entries == NULL) {
96	fprintf(stderr, "device_register(): out of memory\n");
97	exit(1);
98	}
99
100	memset(&device_entries[n_device_entries], 0,
101	sizeof(struct device_entry));
102
103	device_entries[n_device_entries].name = strdup(name);
104	device_entries[n_device_entries].initf = initf;
105
106	device_entries_sorted = 0;
107	n_device_entries ++;
108	return 1;
109	}
110
111
112	/*
113	* pci_register():
114	*
115	* Registers a pci device. The pci device is added to the pci_entries array.
116	*
117	* Return value is 1 if the pci device was registered. If it was not
118	* added, this function does not return.
119	*/
120	int pci_register(char name, void (initf)(struct machine , struct memory ,
121	struct pci_device *))
122	{
123	pci_entries = realloc(pci_entries, sizeof(struct pci_entry)
124	* (n_pci_entries + 1));
125	if (pci_entries == NULL) {
126	fprintf(stderr, "pci_register(): out of memory\n");
127	exit(1);
128	}
129
130	memset(&pci_entries[n_pci_entries], 0, sizeof(struct pci_entry));
131
132	pci_entries[n_pci_entries].name = strdup(name);
133	pci_entries[n_pci_entries].initf = initf;
134	n_pci_entries ++;
135	return 1;
136	}
137
138
139	/*
140	* pci_lookup_initf():
141	*
142	* Find a pci device init function by scanning the pci_entries array.
143	*
144	* Return value is a function pointer, or NULL if the name was not found.
145	*/
146	void (pci_lookup_initf(const char name))(struct machine *machine,
147	struct memory mem, struct pci_device pd)
148	{
149	int i;
150
151	if (name == NULL) {
152	fprintf(stderr, "pci_lookup_initf(): name = NULL\n");
153	exit(1);
154	}
155
156	for (i=0; i<n_pci_entries; i++)
157	if (strcmp(name, pci_entries[i].name) == 0)
158	return pci_entries[i].initf;
159	return NULL;
160	}
161
162
163	/*
164	* device_lookup():
165	*
166	* Lookup a device name by scanning the device_entries array (as a binary
167	* search tree).
168	*
169	* Return value is a pointer to the device_entry on success, or a NULL pointer
170	* if there was no such device.
171	*/
172	struct device_entry device_lookup(char name)
173	{
174	int hi, lo;
175
176	if (name == NULL) {
177	fprintf(stderr, "device_lookup(): NULL ptr\n");
178	exit(1);
179	}
180
181	if (!device_entries_sorted)
182	sort_entries();
183
184	if (n_device_entries == 0)
185	return NULL;
186
187	lo = 0; hi = n_device_entries - 1;
188
189	while (lo <= hi) {
190	int r, i = (lo + hi) / 2;
191
192	/* printf("device_lookup(): i=%i (lo=%i hi=%i)\n", i, lo, hi);
193	printf(" name='%s', '%s'\n", name,
194	device_entries[i].name); */
195
196	r = strcmp(name, device_entries[i].name);
197	if (r == 0) {
198	/* Found it! */
199	return &device_entries[i];
200	}
201
202	/* Try left or right half: */
203	if (r < 0)
204	hi = i - 1;
205	if (r > 0)
206	lo = i + 1;
207	}
208
209	return NULL;
210	}
211
212
213	/*
214	* device_unregister():
215	*
216	* Unregisters a device.
217	*
218	* Return value is 1 if a device was unregistered, 0 otherwise.
219	*/
220	int device_unregister(char *name)
221	{
222	ssize_t i;
223	struct device_entry *p = device_lookup(name);
224
225	if (p == NULL) {
226	fatal("device_unregister(): no such device (\"%s\")\n", name);
227	return 0;
228	}
229
230	i = (size_t)p - (size_t)device_entries;
231	i /= sizeof(struct device_entry);
232
233	free(device_entries[i].name);
234	device_entries[i].name = NULL;
235
236	if (i == n_device_entries-1) {
237	/* Do nothing if we're removing the last array element. */
238	} else {
239	/* Remove array element i by copying the last element
240	to i's position: */
241	device_entries[i] = device_entries[n_device_entries-1];
242
243	/* The array is not sorted anymore: */
244	device_entries_sorted = 0;
245	}
246
247	n_device_entries --;
248
249	/* TODO: realloc? */
250	return 1;
251	}
252
253
254	/*
255	* device_add():
256	*
257	* Add a device to a machine. For example: "kn210 addr=0x12340000" adds a
258	* device called "kn210" at a specific address.
259	*
260	* TODO: This function is quite ugly, and should be cleaned up.
261	* name_and_params should be const.
262	*/
263	void device_add(struct machine machine, char *name_and_params)
264	{
265	struct device_entry *p;
266	struct devinit devinit;
267	char s2, s3;
268	size_t len, interrupt_path_len = strlen(machine->path) + 100;
269	int quoted;
270
271	memset(&devinit, 0, sizeof(struct devinit));
272	devinit.machine = machine;
273
274	/* Default values: */
275	devinit.addr_mult = 1;
276	devinit.in_use = 1;
277
278	/* Get the device name first: */
279	s2 = name_and_params;
280	while (s2[0] != ',' && s2[0] != ' ' && s2[0] != '\0')
281	s2 ++;
282
283	len = (size_t)s2 - (size_t)name_and_params;
284	devinit.name = malloc(len + 1);
285	if (devinit.name == NULL) {
286	fprintf(stderr, "device_add(): out of memory\n");
287	exit(1);
288	}
289	memcpy(devinit.name, name_and_params, len);
290	devinit.name[len] = '\0';
291
292	/* Allocate space for the default interrupt name: */
293	devinit.interrupt_path = malloc(interrupt_path_len + 1);
294	if (devinit.interrupt_path == NULL) {
295	fprintf(stderr, "device_add(): out of memory\n");
296	exit(1);
297	}
298	snprintf(devinit.interrupt_path, interrupt_path_len,
299	"%s.cpu[%i]", machine->path, machine->bootstrap_cpu);
300
301	p = device_lookup(devinit.name);
302	if (p == NULL) {
303	fatal("no such device (\"%s\")\n", devinit.name);
304	if (device_exit_on_error)
305	exit(1);
306	else
307	goto return_fail;
308	}
309
310	/* Get params from name_and_params: */
311	while (*s2 != '\0') {
312	/* Skip spaces, commas, and semicolons: */
313	while (s2 == ' ' \|\| s2 == ',' \|\| *s2 == ';')
314	s2 ++;
315
316	if (*s2 == '\0')
317	break;
318
319	/* s2 now points to the next param. eg "addr=1234" */
320
321	/* Get a word (until there is a '=' sign): */
322	s3 = s2;
323	while (s3 != '=' && s3 != '\0')
324	s3 ++;
325	if (s3 == s2) {
326	fatal("weird param: %s\n", s2);
327	if (device_exit_on_error)
328	exit(1);
329	else
330	goto return_fail;
331	}
332	s3 ++;
333	/* s3 now points to the parameter value ("1234") */
334
335	if (strncmp(s2, "addr=", 5) == 0) {
336	devinit.addr = mystrtoull(s3, NULL, 0);
337	} else if (strncmp(s2, "addr2=", 6) == 0) {
338	devinit.addr2 = mystrtoull(s3, NULL, 0);
339	} else if (strncmp(s2, "len=", 4) == 0) {
340	devinit.len = mystrtoull(s3, NULL, 0);
341	} else if (strncmp(s2, "addr_mult=", 10) == 0) {
342	devinit.addr_mult = mystrtoull(s3, NULL, 0);
343	} else if (strncmp(s2, "pci_little_endian=", 18) == 0) {
344	devinit.pci_little_endian = mystrtoull(s3, NULL, 0);
345	switch (devinit.pci_little_endian) {
346	case 0: break;
347	case 1: devinit.pci_little_endian =
348	MEM_PCI_LITTLE_ENDIAN;
349	break;
350	default:fatal("Bad pci_little_endian value.\n");
351	exit(1);
352	}
353	} else if (strncmp(s2, "irq=", 4) == 0) {
354	devinit.irq_nr = mystrtoull(s3, NULL, 0);
355
356	/* New-style interrupt path: */
357	snprintf(devinit.interrupt_path, interrupt_path_len,s3);
358	if (strchr(devinit.interrupt_path, ' ') != NULL)
359	*strchr(devinit.interrupt_path, ' ') = '\0';
360
361	if (strncmp(s3, "none", 4) == 0)
362	devinit.interrupt_path[0] = '\0';
363	} 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	quoted = 0;
369	while (*h) {
370	if (*h == '\'')
371	quoted = !quoted;
372	h++, len++;
373	if (!quoted && *h == ' ')
374	break;
375	}
376	devinit.name2 = malloc(len + 1);
377	if (devinit.name2 == NULL) {
378	fprintf(stderr, "out of memory\n");
379	exit(1);
380	}
381	h = s2 + 6;
382	if (*h == '\'')
383	len -= 2, h++;
384	snprintf(devinit.name2, len + 1, h);
385	} 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	quoted = 0;
396	while (s2 != '\0' && (s2 != ' ' \|\| quoted) &&
397	s2 != ',' && s2 != ';') {
398	if (*s2 == '\'')
399	quoted = !quoted;
400	s2 ++;
401	}
402	}
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	free(devinit.interrupt_path);
420	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	*
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	*/
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	* add all normal devices (from the src/devices/ directory).
471	*
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