-struct vm_device *thedev=NULL;
+struct vm_device * thedev = NULL;
-
-static struct vm_device *demultiplex_timer_interrupt(uint_t period_us)
+static struct vm_device * demultiplex_timer_interrupt(uint_t period_us)
{
// hack
return thedev;
}
struct bcd_num {
- uchar_t bot:4;
- uchar_t top:4;
+ uchar_t bot : 4;
+ uchar_t top : 4;
} ;
-static uchar_t add_to(uchar_t *left, uchar_t *right, uchar_t bcd)
+static uchar_t add_to(uchar_t * left, uchar_t * right, uchar_t bcd)
{
uchar_t temp;
if (bcd) {
- struct bcd_num *bl = (struct bcd_num *)left;
- struct bcd_num *br = (struct bcd_num *)right;
- uchar_t carry=0;
+ struct bcd_num * bl = (struct bcd_num *)left;
+ struct bcd_num * br = (struct bcd_num *)right;
+ uchar_t carry = 0;
bl->bot += br->bot;
carry = bl->bot / 0xa;
bl->bot %= 0xa;
+
bl->top += carry + br->top;
carry = bl->top / 0xa;
bl->top %= 0xa;
+
return carry;
} else {
- temp=*left;
- *left+=*right;
- if (*left<temp) {
+ temp = *left;
+ *left += *right;
+
+ if (*left < temp) {
return 1;
} else {
return 0;
// This completely ignores Julian / Gregorian stuff right now
if (bcd) {
- switch (month) {
- case 0x1: //jan
- case 0x3: //march
- case 0x5: //may
- case 0x7: //july
- case 0x8: //aug
- case 0x10: //oct
- case 0x12: //dec
- return 0x31;
- break;
- case 0x4: //april
- case 0x6: //june
- case 0x9: //sept
- case 0x11: //nov
- return 0x30;
- break;
- case 0x2: //feb
- return 0x28;
- break;
- default:
- return 0x30;
- }
+
+ switch (month)
+ {
+ case 0x1: //jan
+ case 0x3: //march
+ case 0x5: //may
+ case 0x7: //july
+ case 0x8: //aug
+ case 0x10: //oct
+ case 0x12: //dec
+ return 0x31;
+ break;
+ case 0x4: //april
+ case 0x6: //june
+ case 0x9: //sept
+ case 0x11: //nov
+ return 0x30;
+ break;
+ case 0x2: //feb
+ return 0x28;
+ break;
+ default:
+ return 0x30;
+ }
+
} else {
- switch (month) {
- case 1: //jan
- case 3: //march
- case 5: //may
- case 7: //july
- case 8: //aug
- case 10: //oct
- case 12: //dec
- return 31;
- break;
- case 4: //april
- case 6: //june
- case 9: //sept
- case 11: //nov
- return 30;
- break;
- case 2: //feb
- return 28;
- break;
- default:
- return 30;
- }
+
+ switch (month)
+ {
+ case 1: //jan
+ case 3: //march
+ case 5: //may
+ case 7: //july
+ case 8: //aug
+ case 10: //oct
+ case 12: //dec
+ return 31;
+ break;
+ case 4: //april
+ case 6: //june
+ case 9: //sept
+ case 11: //nov
+ return 30;
+ break;
+ case 2: //feb
+ return 28;
+ break;
+ default:
+ return 30;
+ }
}
}
static void update_time(struct vm_device *dev, uint_t period_us)
{
- struct nvram_internal *data = (struct nvram_internal *) (dev->private_data);
- struct rtc_stata *stata = (struct rtc_stata *) &((data->mem_state[NVRAM_REG_STAT_A]));
- struct rtc_statb *statb = (struct rtc_statb *) &((data->mem_state[NVRAM_REG_STAT_B]));
- struct rtc_statc *statc = (struct rtc_statc *) &((data->mem_state[NVRAM_REG_STAT_C]));
+ struct nvram_internal * data = (struct nvram_internal *) (dev->private_data);
+ struct rtc_stata * stata = (struct rtc_stata *) &((data->mem_state[NVRAM_REG_STAT_A]));
+ struct rtc_statb * statb = (struct rtc_statb *) &((data->mem_state[NVRAM_REG_STAT_B]));
+ struct rtc_statc * statc = (struct rtc_statc *) &((data->mem_state[NVRAM_REG_STAT_C]));
//struct rtc_statd *statd = (struct rtc_statd *) &((data->mem_state[NVRAM_REG_STAT_D]));
- uchar_t *sec = (uchar_t *) &(data->mem_state[NVRAM_REG_SEC]);
- uchar_t *min = (uchar_t *) &(data->mem_state[NVRAM_REG_MIN]);
- uchar_t *hour = (uchar_t *) &(data->mem_state[NVRAM_REG_HOUR]);
- uchar_t *weekday = (uchar_t *) &(data->mem_state[NVRAM_REG_WEEK_DAY]);
- uchar_t *monthday = (uchar_t *) &(data->mem_state[NVRAM_REG_MONTH_DAY]);
- uchar_t *month = (uchar_t *) &(data->mem_state[NVRAM_REG_MONTH]);
- uchar_t *year = (uchar_t *) &(data->mem_state[NVRAM_REG_YEAR]);
- uchar_t *cent = (uchar_t *) &(data->mem_state[NVRAM_REG_IBM_CENTURY_BYTE]);
- uchar_t *seca = (uchar_t *) &(data->mem_state[NVRAM_REG_SEC_ALARM]);
- uchar_t *mina = (uchar_t *) &(data->mem_state[NVRAM_REG_MIN_ALARM]);
- uchar_t *houra = (uchar_t *) &(data->mem_state[NVRAM_REG_HOUR_ALARM]);
+ uchar_t * sec = (uchar_t *) &(data->mem_state[NVRAM_REG_SEC]);
+ uchar_t * min = (uchar_t *) &(data->mem_state[NVRAM_REG_MIN]);
+ uchar_t * hour = (uchar_t *) &(data->mem_state[NVRAM_REG_HOUR]);
+ uchar_t * weekday = (uchar_t *) &(data->mem_state[NVRAM_REG_WEEK_DAY]);
+ uchar_t * monthday = (uchar_t *) &(data->mem_state[NVRAM_REG_MONTH_DAY]);
+ uchar_t * month = (uchar_t *) &(data->mem_state[NVRAM_REG_MONTH]);
+ uchar_t * year = (uchar_t *) &(data->mem_state[NVRAM_REG_YEAR]);
+ uchar_t * cent = (uchar_t *) &(data->mem_state[NVRAM_REG_IBM_CENTURY_BYTE]);
+ uchar_t * seca = (uchar_t *) &(data->mem_state[NVRAM_REG_SEC_ALARM]);
+ uchar_t * mina = (uchar_t *) &(data->mem_state[NVRAM_REG_MIN_ALARM]);
+ uchar_t * houra = (uchar_t *) &(data->mem_state[NVRAM_REG_HOUR_ALARM]);
uchar_t hour24;
- uchar_t bcd = (statb->dm==1);
- uchar_t carry=0;
- uchar_t nextday=0;
+ uchar_t bcd = (statb->dm == 1);
+ uchar_t carry = 0;
+ uchar_t nextday = 0;
uint_t periodic_period;
//PrintDebug("nvram: sizeof(struct rtc_stata)=%d\n", sizeof(struct rtc_stata));
//PrintDebug("nvram: update_time\n",statb->pi);
// We will set these flags on exit
- statc->irq=statc->pf=statc->af=statc->uf=0;
+ statc->irq = 0;
+ statc->pf = 0;
+ statc->af = 0;
+ statc->uf = 0;
// We will reset us after one second
data->us += period_us;
data->pus += period_us;
if (data->us > 1000000) {
- carry=1;
- //PrintDebug("nvram: adding 1 to seconds=0x%x (bcd=%d)...", *sec, bcd);
- carry=add_to(sec,&carry,bcd);
- //PrintDebug("got 0x%x with carry=%d\n",*sec,carry);
- if (carry) { PrintDebug("nvram: somehow managed to get a carry in second update\n"); }
- if ((bcd && *sec==0x60) || (!bcd && *sec==60)) {
- *sec=0;
- carry=1;
- carry=add_to(min,&carry,bcd);
- if (carry) { PrintDebug("nvram: somehow managed to get a carry in minute update\n"); }
- if ((bcd && *min==0x60) || (!bcd && *min==60)) {
- *min=0;
+ carry = 1;
+ carry = add_to(sec, &carry, bcd);
+
+ if (carry) {
+ PrintDebug("nvram: somehow managed to get a carry in second update\n");
+ }
+
+ if ( (bcd && (*sec == 0x60)) ||
+ ((!bcd) && (*sec == 60))) {
+
+ *sec = 0;
+
+ carry = 1;
+ carry = add_to(min, &carry, bcd);
+ if (carry) {
+ PrintDebug("nvram: somehow managed to get a carry in minute update\n");
+ }
+
+ if ( (bcd && (*min == 0x60)) ||
+ ((!bcd) && (*min == 60))) {
+
+ *min = 0;
hour24 = *hour;
+
if (!(statb->h24)) {
- if (hour24&0x80) {
- hour24&=0x8f;
- uchar_t temp = bcd ? 0x12 : 12;
- add_to(&hour24,&temp, bcd);
+
+ if (hour24 & 0x80) {
+ hour24 &= 0x8f;
+ uchar_t temp = ((bcd) ? 0x12 : 12);
+ add_to(&hour24, &temp, bcd);
}
}
- carry=1;
- carry=add_to(&hour24,&carry,bcd);
- if (carry) { PrintDebug("nvram: somehow managed to get a carry in hour update\n"); }
- if ((bcd && hour24==0x24) || (!bcd && hour24==24)) {
- carry=1;
- nextday=1;
- hour24=0;
+
+ carry = 1;
+ carry = add_to(&hour24, &carry, bcd);
+ if (carry) {
+ PrintDebug("nvram: somehow managed to get a carry in hour update\n");
+ }
+
+ if ( (bcd && (hour24 == 0x24)) ||
+ ((!bcd) && (hour24 == 24))) {
+ carry = 1;
+ nextday = 1;
+ hour24 = 0;
} else {
- carry=0;
+ carry = 0;
}
+
+
if (statb->h24) {
- *hour=hour24;
+ *hour = hour24;
} else {
- if ((bcd && hour24<0x12) || (!bcd && hour24<12)) {
- *hour=hour24;
+ if ( (bcd && (hour24 < 0x12)) ||
+ ((!bcd) && (hour24 < 12))) {
+ *hour = hour24;
+
} else {
+
if (!bcd) {
- *hour = (hour24-12) | 0x80;
+ *hour = (hour24 - 12) | 0x80;
} else {
*hour = hour24;
- struct bcd_num *n = (struct bcd_num *) hour;
- if (n->bot<0x2) {
+ struct bcd_num * n = (struct bcd_num *)hour;
+
+ if (n->bot < 0x2) {
n->top--;
- n->bot+=0xa;
+ n->bot += 0xa;
}
- n->bot-=0x2;
- n->top-=0x1;
+
+ n->bot -= 0x2;
+ n->top -= 0x1;
}
}
}
+
// now see if we need to carry into the days and further
if (nextday) {
- carry=1;
+ carry = 1;
add_to(weekday, &carry, bcd);
- *weekday%=0x7; // same regardless of bcd
- if (!(*monthday==days_in_month(dev,*month,bcd))) {
+
+ *weekday %= 0x7; // same regardless of bcd
+
+ if ((*monthday) != days_in_month(dev, *month, bcd)) {
add_to(monthday, &carry, bcd);
} else {
- *monthday=0x1;
- carry=1;
- add_to(month,&carry,bcd);
- if ((bcd && *month==0x13) || (!bcd && *month==13)) {
- *month=1; // same for both
- carry=1;
- carry=add_to(year,&carry,bcd);
- if ((bcd && carry) || (!bcd && *year==100)) {
- *year=0;
- carry=1;
- add_to(cent,&carry,bcd);
+ *monthday = 0x1;
+
+ carry = 1;
+ add_to(month, &carry, bcd);
+
+ if ( (bcd && (*month == 0x13)) ||
+ ((!bcd) && (*month == 13))) {
+ *month = 1; // same for both
+
+ carry = 1;
+ carry = add_to(year, &carry, bcd);
+
+ if ( (bcd && carry) ||
+ ((!bcd) && (*year == 100))) {
+ *year = 0;
+ carry = 1;
+ add_to(cent, &carry, bcd);
}
}
}
}
}
}
- data->us-=1000000;
+
+
+ data->us -= 1000000;
// OK, now check for the alarm, if it is set to interrupt
if (statb->ai) {
- if (*sec==*seca && *min==*mina && *hour==*houra) {
- statc->af=1;
+ if ((*sec == *seca) && (*min == *mina) && (*hour == *houra)) {
+ statc->af = 1;
PrintDebug("nvram: interrupt on alarm\n");
}
}
}
if (statb->pi) {
- periodic_period = 1000000/(65536/(0x1 << stata->rate));
+ periodic_period = 1000000 / (65536 / (0x1 << stata->rate));
if (data->pus >= periodic_period) {
- statc->pf=1;
+ statc->pf = 1;
data->pus -= periodic_period;
PrintDebug("nvram: interrupt on periodic\n");
}
}
if (statb->ui) {
- statc->uf=1;
+ statc->uf = 1;
PrintDebug("nvram: interrupt on update\n");
}
- statc->irq= statc->pf || statc->af || statc->uf;
+ statc->irq = (statc->pf || statc->af || statc->uf);
//PrintDebug("nvram: time is now: YMDHMS: 0x%x:0x%x:0x%x:0x%x:0x%x,0x%x bcd=%d\n", *year, *month, *monthday, *hour, *min, *sec,bcd);
void deliver_timer_interrupt_to_vmm(uint_t period_us)
{
- struct vm_device *dev = demultiplex_timer_interrupt(period_us);
+ struct vm_device * dev = demultiplex_timer_interrupt(period_us);
if (dev) {
- update_time(dev,period_us);
+ update_time(dev, period_us);
}
}
-static int set_nvram_defaults(struct vm_device *dev)
+static int set_nvram_defaults(struct vm_device * dev)
{
- struct nvram_internal * nvram_state = (struct nvram_internal*) dev->private_data;
-
-
+ struct nvram_internal * nvram_state = (struct nvram_internal *)dev->private_data;
//
// 2 1.44 MB floppy drives
//
#if 1
- nvram_state->mem_state[NVRAM_REG_FLOPPY_TYPE]= 0x44;
+ nvram_state->mem_state[NVRAM_REG_FLOPPY_TYPE] = 0x44;
#else
nvram_state->mem_state[NVRAM_REG_FLOPPY_TYPE] = 0x00;
#endif
//
// For old boot sequence style, do floppy first
//
- nvram_state->mem_state[NVRAM_REG_BOOTSEQ_OLD]= 0x10;
+ nvram_state->mem_state[NVRAM_REG_BOOTSEQ_OLD] = 0x10;
#if 0
// For new boot sequence style, do floppy, cd, then hd
- nvram_state->mem_state[NVRAM_REG_BOOTSEQ_NEW_FIRST]= 0x31;
- nvram_state->mem_state[NVRAM_REG_BOOTSEQ_NEW_SECOND]= 0x20;
+ nvram_state->mem_state[NVRAM_REG_BOOTSEQ_NEW_FIRST] = 0x31;
+ nvram_state->mem_state[NVRAM_REG_BOOTSEQ_NEW_SECOND] = 0x20;
#endif
// For new boot sequence style, do cd, hd, floppy
- nvram_state->mem_state[NVRAM_REG_BOOTSEQ_NEW_FIRST]= 0x23;
- nvram_state->mem_state[NVRAM_REG_BOOTSEQ_NEW_SECOND]= 0x10;
+ nvram_state->mem_state[NVRAM_REG_BOOTSEQ_NEW_FIRST] = 0x23;
+ nvram_state->mem_state[NVRAM_REG_BOOTSEQ_NEW_SECOND] = 0x10;
// Set equipment byte to note 2 floppies, vga display, keyboard,math,floppy
- nvram_state->mem_state[NVRAM_REG_EQUIPMENT_BYTE]= 0x4f;
+ nvram_state->mem_state[NVRAM_REG_EQUIPMENT_BYTE] = 0x4f;
//nvram_state->mem_state[NVRAM_REG_EQUIPMENT_BYTE] = 0xf;
// Set conventional memory to 640K
- nvram_state->mem_state[NVRAM_REG_BASE_MEMORY_HIGH]= 0x02;
- nvram_state->mem_state[NVRAM_REG_BASE_MEMORY_LOW]= 0x80;
+ nvram_state->mem_state[NVRAM_REG_BASE_MEMORY_HIGH] = 0x02;
+ nvram_state->mem_state[NVRAM_REG_BASE_MEMORY_LOW] = 0x80;
// Set extended memory to 15 MB
- nvram_state->mem_state[NVRAM_REG_EXT_MEMORY_HIGH]= 0x3C;
- nvram_state->mem_state[NVRAM_REG_EXT_MEMORY_LOW]= 0x00;
+ nvram_state->mem_state[NVRAM_REG_EXT_MEMORY_HIGH] = 0x3C;
+ nvram_state->mem_state[NVRAM_REG_EXT_MEMORY_LOW] = 0x00;
nvram_state->mem_state[NVRAM_REG_EXT_MEMORY_2ND_HIGH]= 0x3C;
nvram_state->mem_state[NVRAM_REG_EXT_MEMORY_2ND_LOW]= 0x00;
nvram_state->mem_state[NVRAM_REG_WEEK_DAY] = 0x1;
nvram_state->mem_state[NVRAM_REG_YEAR] = 0x08;
- nvram_state->us=nvram_state->pus=0;
+ nvram_state->us = 0;
+ nvram_state->pus = 0;
return 0;
int nvram_reset_device(struct vm_device * dev)
{
- struct nvram_internal *data = (struct nvram_internal *) dev->private_data;
+ struct nvram_internal * data = (struct nvram_internal *) dev->private_data;
PrintDebug("nvram: reset device\n");
-
data->dev_state = NVRAM_READY;
- data->thereg=0;
-
+ data->thereg = 0;
return 0;
-
}
int nvram_write_reg_port(ushort_t port,
- void * src,
- uint_t length,
- struct vm_device * dev)
+ void * src,
+ uint_t length,
+ struct vm_device * dev)
{
- struct nvram_internal *data = (struct nvram_internal *) dev->private_data;
+ struct nvram_internal * data = (struct nvram_internal *)dev->private_data;
memcpy(&(data->thereg), src, 1);
PrintDebug("Writing To NVRAM reg: 0x%x\n", data->thereg);
}
int nvram_read_data_port(ushort_t port,
- void * dst,
- uint_t length,
- struct vm_device * dev)
+ void * dst,
+ uint_t length,
+ struct vm_device * dev)
{
- struct nvram_internal *data = (struct nvram_internal *) dev->private_data;
+ struct nvram_internal * data = (struct nvram_internal *) dev->private_data;
PrintDebug("nvram_read_data_port(0x%x)=0x%x\n", data->thereg, data->mem_state[data->thereg]);
// hack
- if (data->thereg==NVRAM_REG_STAT_A) {
+ if (data->thereg == NVRAM_REG_STAT_A) {
data->mem_state[data->thereg] ^= 0x80; // toggle Update in progess
}
}
int nvram_write_data_port(ushort_t port,
- void * src,
- uint_t length,
- struct vm_device * dev)
+ void * src,
+ uint_t length,
+ struct vm_device * dev)
{
- struct nvram_internal *data = (struct nvram_internal *) dev->private_data;
+ struct nvram_internal * data = (struct nvram_internal *)dev->private_data;
memcpy(&(data->mem_state[data->thereg]), src, 1);
int nvram_init_device(struct vm_device * dev) {
- struct nvram_internal *data = (struct nvram_internal *) dev->private_data;
+ struct nvram_internal * data = (struct nvram_internal *) dev->private_data;
PrintDebug("nvram: init_device\n");
-struct vm_device *create_nvram() {
- struct nvram_internal * nvram_state = (struct nvram_internal *)V3_Malloc(sizeof(struct nvram_internal)+1000);
+struct vm_device * create_nvram() {
+ struct nvram_internal * nvram_state = (struct nvram_internal *)V3_Malloc(sizeof(struct nvram_internal) + 1000);
PrintDebug("nvram: internal at %x\n",nvram_state);
- struct vm_device *device = create_device("NVRAM", &dev_ops, nvram_state);
+ struct vm_device * device = create_device("NVRAM", &dev_ops, nvram_state);
- if (thedev!=NULL) {
+ if (thedev != NULL) {
PrintDebug("nvram: warning! overwriting thedev\n");
}
- thedev=device;
+ thedev = device;
return device;
}
