mf.c

优龙2410linux2.6.8内核源代码

	if (ev == NULL) {
		rc = -ENOMEM;
	} else {
		union safe_cast mine;

		mine.ptr = userToken;
		ev->event.hp_lp_event.xSubtype = 4;
		ev->event.hp_lp_event.xCorrelationToken = mine.ptr_as_u64;
		ev->event.hp_lp_event.x.xSubtypeData =
			subtype_data('M', 'F', 'M', 'A');
		ev->event.data.alloc.target_lp = targetLp;
		ev->event.data.alloc.type = type;
		ev->event.data.alloc.size = size;
		ev->event.data.alloc.count = count;
		ev->hdlr = hdlr;
		rc = signal_event(ev);
	}
	if ((rc != 0) && (hdlr != NULL))
		(*hdlr)(userToken, rc);
}
EXPORT_SYMBOL(mf_allocateLpEvents);

/*
 * Global kernel interface to unseed and deallocate events already in
 * Hypervisor.
 */
void mf_deallocateLpEvents(HvLpIndex targetLp, HvLpEvent_Type type,
		unsigned count, MFCompleteHandler hdlr, void *userToken)
{
	struct pending_event *ev = new_pending_event();
	int rc;

	if (ev == NULL)
		rc = -ENOMEM;
	else {
		union safe_cast mine;

		mine.ptr = userToken;
		ev->event.hp_lp_event.xSubtype = 5;
		ev->event.hp_lp_event.xCorrelationToken = mine.ptr_as_u64;
		ev->event.hp_lp_event.x.xSubtypeData =
			subtype_data('M', 'F', 'M', 'D');
		ev->event.data.alloc.target_lp = targetLp;
		ev->event.data.alloc.type = type;
		ev->event.data.alloc.count = count;
		ev->hdlr = hdlr;
		rc = signal_event(ev);
	}
	if ((rc != 0) && (hdlr != NULL))
		(*hdlr)(userToken, rc);
}
EXPORT_SYMBOL(mf_deallocateLpEvents);

/*
 * Global kernel interface to tell the VSP object in the primary
 * partition to power this partition off.
 */
void mf_powerOff(void)
{
	printk(KERN_INFO "mf.c: Down it goes...\n");
	signal_ce_msg("\x00\x00\x00\x4D\x00\x00\x00\x00\x00\x00\x00\x00", NULL);
	for (;;);
}

/*
 * Global kernel interface to tell the VSP object in the primary
 * partition to reboot this partition.
 */
void mf_reboot(void)
{
	printk(KERN_INFO "mf.c: Preparing to bounce...\n");
	signal_ce_msg("\x00\x00\x00\x4E\x00\x00\x00\x00\x00\x00\x00\x00", NULL);
	for (;;);
}

/*
 * Display a single word SRC onto the VSP control panel.
 */
void mf_displaySrc(u32 word)
{
	u8 ce[12];

	memcpy(ce, "\x00\x00\x00\x4A\x00\x00\x00\x01\x00\x00\x00\x00", 12);
	ce[8] = word >> 24;
	ce[9] = word >> 16;
	ce[10] = word >> 8;
	ce[11] = word;
	signal_ce_msg(ce, NULL);
}

/*
 * Display a single word SRC of the form "PROGXXXX" on the VSP control panel.
 */
void mf_displayProgress(u16 value)
{
	u8 ce[12];
	u8 src[72];

	memcpy(ce, "\x00\x00\x04\x4A\x00\x00\x00\x48\x00\x00\x00\x00", 12);
	memcpy(src, "\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00"
		"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
		"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
		"\x00\x00\x00\x00PROGxxxx                        ",
		72);
	src[6] = value >> 8;
	src[7] = value & 255;
	src[44] = "0123456789ABCDEF"[(value >> 12) & 15];
	src[45] = "0123456789ABCDEF"[(value >> 8) & 15];
	src[46] = "0123456789ABCDEF"[(value >> 4) & 15];
	src[47] = "0123456789ABCDEF"[value & 15];
	dma_and_signal_ce_msg(ce, NULL, src, sizeof(src), 9 * 64 * 1024);
}

/*
 * Clear the VSP control panel.  Used to "erase" an SRC that was
 * previously displayed.
 */
void mf_clearSrc(void)
{
	signal_ce_msg("\x00\x00\x00\x4B\x00\x00\x00\x00\x00\x00\x00\x00", NULL);
}

/*
 * Initialization code here.
 */
void mf_init(void)
{
	int i;

	/* initialize */
	spin_lock_init(&pending_event_spinlock);
	for (i = 0;
	     i < sizeof(pending_event_prealloc) / sizeof(*pending_event_prealloc);
	     ++i)
		free_pending_event(&pending_event_prealloc[i]);
	HvLpEvent_registerHandler(HvLpEvent_Type_MachineFac, &hvHandler);

	/* virtual continue ack */
	signal_ce_msg("\x00\x00\x00\x57\x00\x00\x00\x00\x00\x00\x00\x00", NULL);

	/* initialization complete */
	printk(KERN_NOTICE "mf.c: iSeries Linux LPAR Machine Facilities initialized\n");
}

void mf_setSide(char side)
{
	u64 newSide;
	struct VspCmdData myVspCmd;

	memset(&myVspCmd, 0, sizeof(myVspCmd));
	switch (side) {
	case 'A':	newSide = 0;
			break;
	case 'B':	newSide = 1;
			break;
	case 'C':	newSide = 2; 
			break;
	default:	newSide = 3;
			break;
	}
	myVspCmd.sub_data.ipl_type = newSide;
	myVspCmd.cmd = 10;

	(void)signal_vsp_instruction(&myVspCmd);
}

char mf_getSide(void)
{
	char returnValue = ' ';
	int rc = 0;
	struct VspCmdData myVspCmd;

	memset(&myVspCmd, 0, sizeof(myVspCmd));
	myVspCmd.cmd = 2;
	myVspCmd.sub_data.ipl_type = 0;
	mb();
	rc = signal_vsp_instruction(&myVspCmd);

	if (rc != 0)
		return returnValue;

	if (myVspCmd.result_code == 0) {
		switch (myVspCmd.sub_data.ipl_type) {
		case 0:	returnValue = 'A';
			break;
		case 1:	returnValue = 'B';
			break;
		case 2:	returnValue = 'C';
			break;
		default:	returnValue = 'D';
			break;
		}
	}
	return returnValue;
}

void mf_getSrcHistory(char *buffer, int size)
{
#if 0
	struct IplTypeReturnStuff returnStuff;
	struct pending_event *ev = new_pending_event();
	int rc = 0;
	char *pages[4];

	pages[0] = kmalloc(4096, GFP_ATOMIC);
	pages[1] = kmalloc(4096, GFP_ATOMIC);
	pages[2] = kmalloc(4096, GFP_ATOMIC);
	pages[3] = kmalloc(4096, GFP_ATOMIC);
	if ((ev == NULL) || (pages[0] == NULL) || (pages[1] == NULL)
			 || (pages[2] == NULL) || (pages[3] == NULL))
		return -ENOMEM;

	returnStuff.xType = 0;
	returnStuff.xRc = 0;
	returnStuff.xDone = 0;
	ev->event.hp_lp_event.xSubtype = 6;
	ev->event.hp_lp_event.x.xSubtypeData =
		subtype_data('M', 'F', 'V', 'I');
	ev->event.data.vsp_cmd.xEvent = &returnStuff;
	ev->event.data.vsp_cmd.cmd = 4;
	ev->event.data.vsp_cmd.lp_index = HvLpConfig_getLpIndex();
	ev->event.data.vsp_cmd.result_code = 0xFF;
	ev->event.data.vsp_cmd.reserved = 0;
	ev->event.data.vsp_cmd.sub_data.page[0] = ISERIES_HV_ADDR(pages[0]);
	ev->event.data.vsp_cmd.sub_data.page[1] = ISERIES_HV_ADDR(pages[1]);
	ev->event.data.vsp_cmd.sub_data.page[2] = ISERIES_HV_ADDR(pages[2]);
	ev->event.data.vsp_cmd.sub_data.page[3] = ISERIES_HV_ADDR(pages[3]);
	mb();
	if (signal_event(ev) != 0)
		return;

 	while (returnStuff.xDone != 1)
 		udelay(10);
 	if (returnStuff.xRc == 0)
 		memcpy(buffer, pages[0], size);
	kfree(pages[0]);
	kfree(pages[1]);
	kfree(pages[2]);
	kfree(pages[3]);
#endif
}

void mf_setCmdLine(const char *cmdline, int size, u64 side)
{
	struct VspCmdData myVspCmd;
	dma_addr_t dma_addr = 0;
	char *page = dma_alloc_coherent(iSeries_vio_dev, size, &dma_addr,
			GFP_ATOMIC);

	if (page == NULL) {
		printk(KERN_ERR "mf.c: couldn't allocate memory to set command line\n");
		return;
	}

	copy_from_user(page, cmdline, size);

	memset(&myVspCmd, 0, sizeof(myVspCmd));
	myVspCmd.cmd = 31;
	myVspCmd.sub_data.kern.token = dma_addr;
	myVspCmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex;
	myVspCmd.sub_data.kern.side = side;
	myVspCmd.sub_data.kern.length = size;
	mb();
	(void)signal_vsp_instruction(&myVspCmd);

	dma_free_coherent(iSeries_vio_dev, size, page, dma_addr);
}

int mf_getCmdLine(char *cmdline, int *size, u64 side)
{
	struct VspCmdData myVspCmd;
	int rc;
	int len = *size;
	dma_addr_t dma_addr;

	dma_addr = dma_map_single(iSeries_vio_dev, cmdline, len,
			DMA_FROM_DEVICE);
	memset(cmdline, 0, len);
	memset(&myVspCmd, 0, sizeof(myVspCmd));
	myVspCmd.cmd = 33;
	myVspCmd.sub_data.kern.token = dma_addr;
	myVspCmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex;
	myVspCmd.sub_data.kern.side = side;
	myVspCmd.sub_data.kern.length = len;
	mb();
	rc = signal_vsp_instruction(&myVspCmd);

	if (rc == 0) {
		if (myVspCmd.result_code == 0)
			len = myVspCmd.sub_data.length_out;
#if 0
		else
			memcpy(cmdline, "Bad cmdline", 11);
#endif
	}

	dma_unmap_single(iSeries_vio_dev, dma_addr, *size, DMA_FROM_DEVICE);

	return len;
}


int mf_setVmlinuxChunk(const char *buffer, int size, int offset, u64 side)
{
	struct VspCmdData myVspCmd;
	int rc;
	dma_addr_t dma_addr = 0;
	char *page = dma_alloc_coherent(iSeries_vio_dev, size, &dma_addr,
			GFP_ATOMIC);

	if (page == NULL) {
		printk(KERN_ERR "mf.c: couldn't allocate memory to set vmlinux chunk\n");
		return -ENOMEM;
	}

	copy_from_user(page, buffer, size);
	memset(&myVspCmd, 0, sizeof(myVspCmd));

	myVspCmd.cmd = 30;
	myVspCmd.sub_data.kern.token = dma_addr;
	myVspCmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex;
	myVspCmd.sub_data.kern.side = side;
	myVspCmd.sub_data.kern.offset = offset;
	myVspCmd.sub_data.kern.length = size;
	mb();
	rc = signal_vsp_instruction(&myVspCmd);
	if (rc == 0) {
		if (myVspCmd.result_code == 0)
			rc = 0;
		else
			rc = -ENOMEM;
	}

	dma_free_coherent(iSeries_vio_dev, size, page, dma_addr);

	return rc;
}

int mf_getVmlinuxChunk(char *buffer, int *size, int offset, u64 side)
{
	struct VspCmdData myVspCmd;
	int rc;
	int len = *size;
	dma_addr_t dma_addr;

	dma_addr = dma_map_single(iSeries_vio_dev, buffer, len,
			DMA_FROM_DEVICE);
	memset(buffer, 0, len);
	memset(&myVspCmd, 0, sizeof(myVspCmd));
	myVspCmd.cmd = 32;
	myVspCmd.sub_data.kern.token = dma_addr;
	myVspCmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex;
	myVspCmd.sub_data.kern.side = side;
	myVspCmd.sub_data.kern.offset = offset;
	myVspCmd.sub_data.kern.length = len;
	mb();
	rc = signal_vsp_instruction(&myVspCmd);
	if (rc == 0) {
		if (myVspCmd.result_code == 0)
			*size = myVspCmd.sub_data.length_out;
		else
			rc = -ENOMEM;
	}

	dma_unmap_single(iSeries_vio_dev, dma_addr, len, DMA_FROM_DEVICE);

	return rc;
}

int mf_setRtcTime(unsigned long time)
{
	struct rtc_time tm;

	to_tm(time, &tm);

	return mf_setRtc(&tm);
}

struct RtcTimeData {
	struct completion com;
	struct CeMsgData xCeMsg;
	int xRc;
};

void getRtcTimeComplete(void * token, struct CeMsgData *ceMsg)
{
	struct RtcTimeData *rtc = (struct RtcTimeData *)token;

	memcpy(&(rtc->xCeMsg), ceMsg, sizeof(rtc->xCeMsg));
	rtc->xRc = 0;
	complete(&rtc->com);
}

static unsigned long lastsec = 1;

int mf_getRtcTime(unsigned long *time)
{
	u32 dataWord1 = *((u32 *)(&xSpCommArea.xBcdTimeAtIplStart));
	u32 dataWord2 = *(((u32 *)&(xSpCommArea.xBcdTimeAtIplStart)) + 1);
	int year = 1970;
	int year1 = (dataWord1 >> 24) & 0x000000FF;
	int year2 = (dataWord1 >> 16) & 0x000000FF;
	int sec = (dataWord1 >> 8) & 0x000000FF;
	int min = dataWord1 & 0x000000FF;
	int hour = (dataWord2 >> 24) & 0x000000FF;
	int day = (dataWord2 >> 8) & 0x000000FF;
	int mon = dataWord2 & 0x000000FF;

	BCD_TO_BIN(sec);
	BCD_TO_BIN(min);
	BCD_TO_BIN(hour);
	BCD_TO_BIN(day);
	BCD_TO_BIN(mon);
	BCD_TO_BIN(year1);
	BCD_TO_BIN(year2);
	year = year1 * 100 + year2;

	*time = mktime(year, mon, day, hour, min, sec);
	*time += (jiffies / HZ);
    
	/*
	 * Now THIS is a nasty hack!
	 * It ensures that the first two calls to mf_getRtcTime get different
	 * answers.  That way the loop in init_time (time.c) will not think
	 * the clock is stuck.
	 */
	if (lastsec) {
		*time -= lastsec;
		--lastsec;
	}
	return 0;
}

int mf_getRtc(struct rtc_time *tm)
{
	struct CeMsgCompleteData ceComplete;
	struct RtcTimeData rtcData;
	int rc;

	memset(&ceComplete, 0, sizeof(ceComplete));
	memset(&rtcData, 0, sizeof(rtcData));
	init_completion(&rtcData.com);
	ceComplete.handler = &getRtcTimeComplete;
	ceComplete.token = (void *)&rtcData;
	rc = signal_ce_msg("\x00\x00\x00\x40\x00\x00\x00\x00\x00\x00\x00\x00",
			&ceComplete);
	if (rc == 0) {
		wait_for_completion(&rtcData.com);

		if (rtcData.xRc == 0) {
			if ((rtcData.xCeMsg.ce_msg[2] == 0xa9) ||
			    (rtcData.xCeMsg.ce_msg[2] == 0xaf)) {
				/* TOD clock is not set */
				tm->tm_sec = 1;
				tm->tm_min = 1;
				tm->tm_hour = 1;
				tm->tm_mday = 10;
				tm->tm_mon = 8;
				tm->tm_year = 71;
				mf_setRtc(tm);
			}
			{
				u32 dataWord1 = *((u32 *)(rtcData.xCeMsg.ce_msg+4));
				u32 dataWord2 = *((u32 *)(rtcData.xCeMsg.ce_msg+8));
				u8 year = (dataWord1 >> 16) & 0x000000FF;
				u8 sec = (dataWord1 >> 8) & 0x000000FF;
				u8 min = dataWord1 & 0x000000FF;
				u8 hour = (dataWord2 >> 24) & 0x000000FF;
				u8 day = (dataWord2 >> 8) & 0x000000FF;
				u8 mon = dataWord2 & 0x000000FF;

				BCD_TO_BIN(sec);
				BCD_TO_BIN(min);
				BCD_TO_BIN(hour);
				BCD_TO_BIN(day);
				BCD_TO_BIN(mon);
				BCD_TO_BIN(year);

				if (year <= 69)
					year += 100;
	    
				tm->tm_sec = sec;
				tm->tm_min = min;
				tm->tm_hour = hour;
				tm->tm_mday = day;
				tm->tm_mon = mon;
				tm->tm_year = year;
			}
		} else {
			rc = rtcData.xRc;
			tm->tm_sec = 0;
			tm->tm_min = 0;
			tm->tm_hour = 0;
			tm->tm_mday = 15;
			tm->tm_mon = 5;
			tm->tm_year = 52;

		}
		tm->tm_wday = 0;
		tm->tm_yday = 0;
		tm->tm_isdst = 0;
	}

	return rc;
}

int mf_setRtc(struct rtc_time * tm)
{
	char ceTime[12] = "\x00\x00\x00\x41\x00\x00\x00\x00\x00\x00\x00\x00";
	u8 day, mon, hour, min, sec, y1, y2;
	unsigned year;
    
	year = 1900 + tm->tm_year;
	y1 = year / 100;
	y2 = year % 100;
    
	sec = tm->tm_sec;
	min = tm->tm_min;
	hour = tm->tm_hour;
	day = tm->tm_mday;
	mon = tm->tm_mon + 1;
	    
	BIN_TO_BCD(sec);
	BIN_TO_BCD(min);
	BIN_TO_BCD(hour);
	BIN_TO_BCD(mon);
	BIN_TO_BCD(day);
	BIN_TO_BCD(y1);
	BIN_TO_BCD(y2);

	ceTime[4] = y1;
	ceTime[5] = y2;
	ceTime[6] = sec;
	ceTime[7] = min;
	ceTime[8] = hour;
	ceTime[10] = day;
	ceTime[11] = mon;
   
	return signal_ce_msg(ceTime, NULL);
}