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	dpavlin	2	/*
2	dpavlin	34	* Copyright (C) 2005-2007 Anders Gavare. All rights reserved.
3	dpavlin	2	*
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	dpavlin	34	* $Id: device.c,v 1.32 2006/12/30 13:30:51 debug Exp $
29	dpavlin	2	*
30			* Device registry framework.
31			*/
32
33			#include <stdio.h>
34			#include <stdlib.h>
35			#include <string.h>
36
37			#include "device.h"
38	dpavlin	34	#include "machine.h"
39	dpavlin	20	#include "memory.h"
40	dpavlin	2	#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	dpavlin	20	static struct pci_entry *pci_entries = NULL;
49			static int n_pci_entries = 0;
50	dpavlin	2
51	dpavlin	20
52	dpavlin	2	/*
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	dpavlin	20	* 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	dpavlin	22	void (pci_lookup_initf(const char name))(struct machine *machine,
147	dpavlin	20	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	dpavlin	2	* 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	dpavlin	20	int hi, lo;
175	dpavlin	2
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	dpavlin	20	lo = 0; hi = n_device_entries - 1;
188	dpavlin	2
189	dpavlin	20	while (lo <= hi) {
190			int r, i = (lo + hi) / 2;
191	dpavlin	2
192	dpavlin	20	/* printf("device_lookup(): i=%i (lo=%i hi=%i)\n", i, lo, hi);
193	dpavlin	2	printf(" name='%s', '%s'\n", name,
194			device_entries[i].name); */
195
196			r = strcmp(name, device_entries[i].name);
197	dpavlin	20	if (r == 0) {
198	dpavlin	2	/* Found it! */
199			return &device_entries[i];
200			}
201
202	dpavlin	20	/* Try left or right half: */
203			if (r < 0)
204			hi = i - 1;
205			if (r > 0)
206			lo = i + 1;
207			}
208	dpavlin	2
209	dpavlin	20	return NULL;
210	dpavlin	2	}
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	dpavlin	12	ssize_t i;
223	dpavlin	2	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	dpavlin	10	* Add a device to a machine. For example: "kn210 addr=0x12340000" adds a
258			* 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			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	dpavlin	34	size_t len, interrupt_path_len = strlen(machine->path) + 100;
269	dpavlin	22	int quoted;
270	dpavlin	2
271			memset(&devinit, 0, sizeof(struct devinit));
272			devinit.machine = machine;
273
274			/* Default values: */
275			devinit.addr_mult = 1;
276	dpavlin	12	devinit.in_use = 1;
277	dpavlin	2
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	dpavlin	34	/* 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	dpavlin	2	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	dpavlin	20	} else if (strncmp(s2, "addr2=", 6) == 0) {
338			devinit.addr2 = mystrtoull(s3, NULL, 0);
339	dpavlin	2	} 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	dpavlin	20	} 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	dpavlin	2	} else if (strncmp(s2, "irq=", 4) == 0) {
354			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			*strchr(devinit.interrupt_path, ' ') = '\0';
360
361			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