jackcartersmith/xilinx-usb-driver
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use a pthread mutex for interrupts

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This commit is contained in:
michael 2007-02-24 23:58:54 +00:00
parent dbda1264f8
commit 533f4b68ba
2 changed files with 11 additions and 8 deletions
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2
Makefile
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@ -1,7 +1,7 @@
CFLAGS=-Wall
xilinx.so: xilinx.c xilinx.h
gcc $(CFLAGS) $< -o $@ -ldl -lusb -shared
gcc $(CFLAGS) $< -o $@ -ldl -lusb -lpthread -shared
clean:
rm -f xilinx.so

17
usb-driver.c
View File

@ -20,6 +20,7 @@
#include <stdio.h>
#include <usb.h>
#include <signal.h>
#include <pthread.h>
#include "xilinx.h"
static int (*ioctl_func) (int, int, void *) = NULL;
@ -31,6 +32,7 @@ static struct usb_device *usbdevice;
static usb_dev_handle *usb_devhandle = NULL;
static unsigned long card_type;
static int ints_enabled = 0;
static pthread_mutex_t int_wait = PTHREAD_MUTEX_INITIALIZER;
#define NO_WINDRVR 1
#undef DEBUG
@ -232,10 +234,12 @@ int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
break;
case CARD_REGISTER:
/* TODO: Implement for LPT-support */
#if 0
{
//struct card_register* cr = (struct card_register*)(wdheader->data);
/* Todo: LPT-Port already in use */
struct card_register* cr = (struct card_register*)(wdheader->data);
}
#endif
#ifdef DEBUG
fprintf(stderr,"faking CARD_REGISTER\n");
#endif
@ -318,7 +322,7 @@ int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
it->fEnableOk = 1;
ints_enabled = 1;
//ret = (*ioctl_func) (fd, request, wdioctl);
pthread_mutex_trylock(&int_wait);
}
break;
@ -339,6 +343,7 @@ int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
it->dwCounter = 0;
it->fStopped = 1;
ints_enabled = 0;
pthread_mutex_unlock(&int_wait);
#endif
#ifdef DEBUG
fprintf(stderr,"Handle: %lu, Options: %lx, ncmds: %lu, enableok: %lu, count: %lu, lost: %lu, stopped: %lu\n", it->hInterrupt, it->dwOptions, it->dwCmds, it->fEnableOk, it->dwCounter, it->dwLost, it->fStopped);
@ -366,7 +371,6 @@ int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
/* FIXME: Select right interface! */
ret = usb_claim_interface(usb_devhandle, usbdevice->config[0].interface[usi->dwInterfaceNum].altsetting[usi->dwAlternateSetting].bInterfaceNumber);
if (!ret) {
//ret = usb_set_configuration(usb_devhandle, usbdevice->config[0].bConfigurationValue);
if(!ret) {
ret = usb_set_altinterface(usb_devhandle, usi->dwAlternateSetting);
if (ret)
@ -397,7 +401,6 @@ int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
fprintf(stderr, "unique: %lu, bytes: %lu, options: %lx\n", ugdd->dwUniqueID, ugdd->dwBytes, ugdd->dwOptions);
#endif
pSize = ugdd->dwBytes;
//ret = (*ioctl_func) (fd, request, wdioctl);
if (!ugdd->dwBytes) {
if (usbdevice) {
ugdd->dwBytes = usb_deviceinfo(NULL);
@ -508,10 +511,10 @@ int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
if (it->dwCounter == 0) {
it->dwCounter = 1;
} else {
while(ints_enabled) {sleep(1);}
pthread_mutex_lock(&int_wait);
}
} else {
while(ints_enabled) {sleep(1);}
pthread_mutex_lock(&int_wait);
}
#endif