void UnwrappedHardwareScheduler::makeMaps() {
memfd = open("/dev/mem", O_RDWR | O_SYNC);
if (memfd < 0) {
LOGE("Failed to open /dev/mem (did you remember to run as root?)\n");
exit(1);
}
pagemapfd = open("/proc/self/pagemap", O_RDONLY);
//now map /dev/mem into memory, but only map specific peripheral sections:
//gpioBaseMem = mapPeripheral(GPIO_BASE);
dmaBaseMem = mapPeripheral(DMA_BASE);
pwmBaseMem = mapPeripheral(PWM_BASE);
clockBaseMem = mapPeripheral(CLOCK_BASE);
}
/* Module initialization and release */
static int __init piScopinatorModuleInit(void)
{
int retval;
dbg("");
piscoperator_kobj = kobject_create_and_add("piscopinator", kernel_kobj);
if (!piscoperator_kobj) {
err("Cannot create kobject!");
goto crap_error;
}
retval = sysfs_create_group(piscoperator_kobj, &pisc_attr_group);
if (retval)
kobject_put(piscoperator_kobj);
mutex_init(&piScopinatorDeviceMutex);
/* This device uses a Kernel FIFO for its read operation */
// need to map the memory of the gpio registers
mapPeripheral(&gpio);
return retval;
crap_error:
return -1;
}