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/*
* pcmcia.c - pcmcia functionality
*
* Erik Troan <ewt@redhat.com>
* Matt Wilson <msw@redhat.com>
* Michael Fulbright <msf@redhat.com>
* Jeremy Katz <katzj@redhat.com>
*
* Copyright 1999 - 2003 Red Hat, Inc.
* Portions of this code from pcmcia-cs, copyright David A. Hinds
* <dahinds@users.sourceforge.net>
*
* This software may be freely redistributed under the terms of the GNU
* General Public License.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <errno.h>
#include <fcntl.h>
#include <kudzu/kudzu.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include "loader.h"
#include "loadermisc.h"
#include "log.h"
#include "modules.h"
char * getPcicController() {
struct device ** devices;
static int probed = 0;
static char * pcic = NULL;
if (!probed) {
probed = 1;
devices = probeDevices(CLASS_SOCKET, BUS_PCI, 0);
if (devices) {
logMessage("found cardbus pci adapter");
pcic = "yenta_socket";
} else {
devices = probeDevices(CLASS_SOCKET, BUS_MISC, 0);
if (devices && strcmp (devices[0]->driver, "ignore") &&
strcmp(devices[0]->driver, "unknown") &&
strcmp(devices[0]->driver, "disabled")) {
logMessage("found pcmcia adapter");
pcic = strdup(devices[0]->driver);
}
}
if (!pcic) {
logMessage("no pcic controller found");
}
return pcic;
} else {
return pcic;
}
}
int initializePcmciaController(moduleList modLoaded, moduleDeps modDeps,
moduleInfoSet modInfo, int flags) {
char * pcic = NULL;
char * mods;
if (FL_NOPCMCIA(flags) || FL_TESTING(flags))
return 0;
pcic = getPcicController();
if (!pcic)
return 0;
mods = sdupprintf("pcmcia_core:%s:ds", pcic);
mlLoadModuleSet(mods, modLoaded, modDeps, modInfo, flags);
return 0;
}
/* code from notting to activate pcmcia devices. all kinds of wackiness */
static int pcmcia_major = 0;
static int lookup_dev(char *name) {
FILE *f;
int n;
char s[32], t[32];
f = fopen("/proc/devices", "r");
if (f == NULL)
return -errno;
while (fgets(s, 32, f) != NULL) {
if (sscanf(s, "%d %s", &n, t) == 2)
if (strcmp(name, t) == 0)
break;
}
fclose(f);
if (strcmp(name, t) == 0)
return n;
else
return -ENODEV;
}
static int open_sock(int sock) {
int fd;
char fn[64];
dev_t dev = (pcmcia_major<<8) + sock;
snprintf(fn, 64, "/tmp/pcmciadev-%d", getpid());
if (mknod(fn, (S_IFCHR|0600), dev) == 0) {
fd = open(fn, O_RDONLY);
unlink(fn);
if (fd >= 0)
return fd;
}
return -1;
}
/* return whether or not we have pcmcia loaded */
int has_pcmcia(void) {
if (pcmcia_major > 0)
return pcmcia_major;
pcmcia_major = lookup_dev("pcmcia");
return pcmcia_major;
}
struct bind_info_t {
char dev_info[32];
unsigned char function;
/* Not really a void *. Some convuluted structure that appears
* to be NULL in cardmgr. */
void *instance;
char name[32];
unsigned short major;
unsigned short minor;
void *next;
};
#define DS_BIND_REQUEST _IOWR('d', 60, struct bind_info_t)
#define DS_GET_DEVICE_INFO _IOWR('d', 61, struct bind_info_t)
int activate_pcmcia_device(struct pcmciaDevice *pdev) {
int fd;
struct bind_info_t * bind;
int j, ret;
if (has_pcmcia() <= 0) {
logMessage("pcmcia not loaded, can't activate module");
return -1;
}
fd = open_sock(pdev->slot);
if (fd < 0) {
logMessage("unable to open slot");
return -1;
}
bind = calloc(1, sizeof(struct bind_info_t));
strcpy(bind->dev_info,pdev->driver);
bind->function = pdev->function;
if (ioctl(fd, DS_BIND_REQUEST, bind) == -1) {
logMessage("failed to activate pcmcia device");
return LOADER_ERROR;
}
for (ret = j = 0; j < 10; j++) {
ret = ioctl(fd, DS_GET_DEVICE_INFO, bind);
if ((ret == 0) || (errno != EAGAIN))
break;
usleep(100000);
}
if (j >= 10) {
logMessage("activated, but unable to get device info");
return LOADER_ERROR;
}
return LOADER_OK;
}
void startPcmciaDevices(moduleList modLoaded, int flags) {
struct device ** devices;
int i;
/* no pcmcia, don't try to start the devices */
if (has_pcmcia() <= 0)
return;
devices = probeDevices(CLASS_UNSPEC, BUS_PCMCIA, PROBE_LOADED);
if (!devices) {
logMessage("no devices to activate");
return;
}
for (i = 0; devices[i]; i++) {
if (devices[i]->bus != BUS_PCMCIA)
continue;
if (!(strcmp (devices[i]->driver, "ignore") &&
strcmp (devices[i]->driver, "unknown") &&
strcmp (devices[i]->driver, "disabled")))
continue;
if (!mlModuleInList(devices[i]->driver, modLoaded))
continue;
logMessage("going to activate device using %s", devices[i]->driver);
activate_pcmcia_device((struct pcmciaDevice *)devices[i]);
}
}
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