mf.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:29k
- /*
- * mf.c
- * Copyright (C) 2001 Troy D. Armstrong IBM Corporation
- *
- * This modules exists as an interface between a Linux secondary partition
- * running on an iSeries and the primary partition's Virtual Service
- * Processor (VSP) object. The VSP has final authority over powering on/off
- * all partitions in the iSeries. It also provides miscellaneous low-level
- * machine facility type operations.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
- #include <asm/iSeries/mf.h>
- #include <linux/types.h>
- #include <linux/errno.h>
- #include <linux/kernel.h>
- #include <linux/init.h>
- #include <linux/mm.h>
- #include <asm/iSeries/HvLpConfig.h>
- #include <linux/slab.h>
- #include <linux/delay.h>
- #include <asm/nvram.h>
- #include <asm/time.h>
- #include <asm/iSeries/ItSpCommArea.h>
- #include <asm/iSeries/mf_proc.h>
- #include <asm/iSeries/iSeries_proc.h>
- #include <asm/uaccess.h>
- #include <linux/pci.h>
- extern struct pci_dev * iSeries_vio_dev;
- /*
- * This is the structure layout for the Machine Facilites LPAR event
- * flows.
- */
- struct VspCmdData;
- struct CeMsgData;
- union SafeCast
- {
- u64 ptrAsU64;
- void *ptr;
- };
- typedef void (*CeMsgCompleteHandler)( void *token, struct CeMsgData *vspCmdRsp );
- struct CeMsgCompleteData
- {
- CeMsgCompleteHandler xHdlr;
- void *xToken;
- };
- struct VspRspData
- {
- struct semaphore *xSemaphore;
- struct VspCmdData *xResponse;
- };
- struct IoMFLpEvent
- {
- struct HvLpEvent xHvLpEvent;
- u16 xSubtypeRc;
- u16 xRsvd1;
- u32 xRsvd2;
- union
- {
- struct AllocData
- {
- u16 xSize;
- u16 xType;
- u32 xCount;
- u16 xRsvd3;
- u8 xRsvd4;
- HvLpIndex xTargetLp;
- } xAllocData;
- struct CeMsgData
- {
- u8 xCEMsg[12];
- char xReserved[4];
- struct CeMsgCompleteData *xToken;
- } xCEMsgData;
- struct VspCmdData
- {
- union SafeCast xTokenUnion;
- u16 xCmd;
- HvLpIndex xLpIndex;
- u8 xRc;
- u32 xReserved1;
- union VspCmdSubData
- {
- struct
- {
- u64 xState;
- } xGetStateOut;
- struct
- {
- u64 xIplType;
- } xGetIplTypeOut, xFunction02SelectIplTypeIn;
- struct
- {
- u64 xIplMode;
- } xGetIplModeOut, xFunction02SelectIplModeIn;
- struct
- {
- u64 xPage[4];
- } xGetSrcHistoryIn;
- struct
- {
- u64 xFlag;
- } xGetAutoIplWhenPrimaryIplsOut,
- xSetAutoIplWhenPrimaryIplsIn,
- xWhiteButtonPowerOffIn,
- xFunction08FastPowerOffIn,
- xIsSpcnRackPowerIncompleteOut;
- struct
- {
- u64 xToken;
- u64 xAddressType;
- u64 xSide;
- u32 xTransferLength;
- u32 xOffset;
- } xSetKernelImageIn,
- xGetKernelImageIn,
- xSetKernelCmdLineIn,
- xGetKernelCmdLineIn;
- struct
- {
- u32 xTransferLength;
- } xGetKernelImageOut,xGetKernelCmdLineOut;
- u8 xReserved2[80];
- } xSubData;
- } xVspCmd;
- } xUnion;
- };
- /*
- * All outgoing event traffic is kept on a FIFO queue. The first
- * pointer points to the one that is outstanding, and all new
- * requests get stuck on the end. Also, we keep a certain number of
- * preallocated stack elements so that we can operate very early in
- * the boot up sequence (before kmalloc is ready).
- */
- struct StackElement
- {
- struct StackElement * next;
- struct IoMFLpEvent event;
- MFCompleteHandler hdlr;
- char dmaData[72];
- unsigned dmaDataLength;
- unsigned remoteAddress;
- };
- static spinlock_t spinlock;
- static struct StackElement * head = NULL;
- static struct StackElement * tail = NULL;
- static struct StackElement * avail = NULL;
- static struct StackElement prealloc[16];
- /*
- * Put a stack element onto the available queue, so it can get reused.
- * Attention! You must have the spinlock before calling!
- */
- void free( struct StackElement * element )
- {
- if ( element != NULL )
- {
- element->next = avail;
- avail = element;
- }
- }
- /*
- * Enqueue the outbound event onto the stack. If the queue was
- * empty to begin with, we must also issue it via the Hypervisor
- * interface. There is a section of code below that will touch
- * the first stack pointer without the protection of the spinlock.
- * This is OK, because we know that nobody else will be modifying
- * the first pointer when we do this.
- */
- static int signalEvent( struct StackElement * newElement )
- {
- int rc = 0;
- unsigned long flags;
- int go = 1;
- struct StackElement * element;
- HvLpEvent_Rc hvRc;
- /* enqueue the event */
- if ( newElement != NULL )
- {
- spin_lock_irqsave( &spinlock, flags );
- if ( head == NULL )
- head = newElement;
- else {
- go = 0;
- tail->next = newElement;
- }
- newElement->next = NULL;
- tail = newElement;
- spin_unlock_irqrestore( &spinlock, flags );
- }
- /* send the event */
- while ( go )
- {
- go = 0;
- /* any DMA data to send beforehand? */
- if ( head->dmaDataLength > 0 )
- HvCallEvent_dmaToSp( head->dmaData, head->remoteAddress, head->dmaDataLength, HvLpDma_Direction_LocalToRemote );
- hvRc = HvCallEvent_signalLpEvent(&head->event.xHvLpEvent);
- if ( hvRc != HvLpEvent_Rc_Good )
- {
- printk( KERN_ERR "mf.c: HvCallEvent_signalLpEvent() failed with %dn", (int)hvRc );
- spin_lock_irqsave( &spinlock, flags );
- element = head;
- head = head->next;
- if ( head != NULL )
- go = 1;
- spin_unlock_irqrestore( &spinlock, flags );
- if ( element == newElement )
- rc = -EIO;
- else {
- if ( element->hdlr != NULL )
- {
- union SafeCast mySafeCast;
- mySafeCast.ptrAsU64 = element->event.xHvLpEvent.xCorrelationToken;
- (*element->hdlr)( mySafeCast.ptr, -EIO );
- }
- }
- spin_lock_irqsave( &spinlock, flags );
- free( element );
- spin_unlock_irqrestore( &spinlock, flags );
- }
- }
- return rc;
- }
- /*
- * Allocate a new StackElement structure, and initialize it.
- */
- static struct StackElement * newStackElement( void )
- {
- struct StackElement * newElement = NULL;
- HvLpIndex primaryLp = HvLpConfig_getPrimaryLpIndex();
- unsigned long flags;
- if ( newElement == NULL )
- {
- spin_lock_irqsave( &spinlock, flags );
- if ( avail != NULL )
- {
- newElement = avail;
- avail = avail->next;
- }
- spin_unlock_irqrestore( &spinlock, flags );
- }
- if ( newElement == NULL )
- newElement = kmalloc(sizeof(struct StackElement),GFP_ATOMIC);
- if ( newElement == NULL )
- {
- printk( KERN_ERR "mf.c: unable to kmalloc %ld bytesn", sizeof(struct StackElement) );
- return NULL;
- }
- memset( newElement, 0, sizeof(struct StackElement) );
- newElement->event.xHvLpEvent.xFlags.xValid = 1;
- newElement->event.xHvLpEvent.xFlags.xAckType = HvLpEvent_AckType_ImmediateAck;
- newElement->event.xHvLpEvent.xFlags.xAckInd = HvLpEvent_AckInd_DoAck;
- newElement->event.xHvLpEvent.xFlags.xFunction = HvLpEvent_Function_Int;
- newElement->event.xHvLpEvent.xType = HvLpEvent_Type_MachineFac;
- newElement->event.xHvLpEvent.xSourceLp = HvLpConfig_getLpIndex();
- newElement->event.xHvLpEvent.xTargetLp = primaryLp;
- newElement->event.xHvLpEvent.xSizeMinus1 = sizeof(newElement->event)-1;
- newElement->event.xHvLpEvent.xRc = HvLpEvent_Rc_Good;
- newElement->event.xHvLpEvent.xSourceInstanceId = HvCallEvent_getSourceLpInstanceId(primaryLp,HvLpEvent_Type_MachineFac);
- newElement->event.xHvLpEvent.xTargetInstanceId = HvCallEvent_getTargetLpInstanceId(primaryLp,HvLpEvent_Type_MachineFac);
- return newElement;
- }
- static int signalVspInstruction( struct VspCmdData *vspCmd )
- {
- struct StackElement * newElement = newStackElement();
- int rc = 0;
- struct VspRspData response;
- DECLARE_MUTEX_LOCKED(Semaphore);
- response.xSemaphore = &Semaphore;
- response.xResponse = vspCmd;
- if ( newElement == NULL )
- rc = -ENOMEM;
- else {
- newElement->event.xHvLpEvent.xSubtype = 6;
- newElement->event.xHvLpEvent.x.xSubtypeData = ('M'<<24)+('F'<<16)+('V'<<8)+('I'<<0);
- newElement->event.xUnion.xVspCmd.xTokenUnion.ptr = &response;
- newElement->event.xUnion.xVspCmd.xCmd = vspCmd->xCmd;
- newElement->event.xUnion.xVspCmd.xLpIndex = HvLpConfig_getLpIndex();
- newElement->event.xUnion.xVspCmd.xRc = 0xFF;
- newElement->event.xUnion.xVspCmd.xReserved1 = 0;
- memcpy(&(newElement->event.xUnion.xVspCmd.xSubData),&(vspCmd->xSubData), sizeof(vspCmd->xSubData));
- mb();
- rc = signalEvent(newElement);
- }
- if (rc == 0)
- {
- down(&Semaphore);
- }
- return rc;
- }
- /*
- * Send a 12-byte CE message to the primary partition VSP object
- */
- static int signalCEMsg( char * ceMsg, void * token )
- {
- struct StackElement * newElement = newStackElement();
- int rc = 0;
- if ( newElement == NULL )
- rc = -ENOMEM;
- else {
- newElement->event.xHvLpEvent.xSubtype = 0;
- newElement->event.xHvLpEvent.x.xSubtypeData = ('M'<<24)+('F'<<16)+('C'<<8)+('E'<<0);
- memcpy( newElement->event.xUnion.xCEMsgData.xCEMsg, ceMsg, 12 );
- newElement->event.xUnion.xCEMsgData.xToken = token;
- rc = signalEvent(newElement);
- }
- return rc;
- }
- /*
- * Send a 12-byte CE message and DMA data to the primary partition VSP object
- */
- static int dmaAndSignalCEMsg( char * ceMsg, void * token, void * dmaData, unsigned dmaDataLength, unsigned remoteAddress )
- {
- struct StackElement * newElement = newStackElement();
- int rc = 0;
- if ( newElement == NULL )
- rc = -ENOMEM;
- else {
- newElement->event.xHvLpEvent.xSubtype = 0;
- newElement->event.xHvLpEvent.x.xSubtypeData = ('M'<<24)+('F'<<16)+('C'<<8)+('E'<<0);
- memcpy( newElement->event.xUnion.xCEMsgData.xCEMsg, ceMsg, 12 );
- newElement->event.xUnion.xCEMsgData.xToken = token;
- memcpy( newElement->dmaData, dmaData, dmaDataLength );
- newElement->dmaDataLength = dmaDataLength;
- newElement->remoteAddress = remoteAddress;
- rc = signalEvent(newElement);
- }
- return rc;
- }
- /*
- * Initiate a nice (hopefully) shutdown of Linux. We simply are
- * going to try and send the init process a SIGINT signal. If
- * this fails (why?), we'll simply force it off in a not-so-nice
- * manner.
- */
- static int shutdown( void )
- {
- int rc = kill_proc(1,SIGINT,1);
- if ( rc )
- {
- printk( KERN_ALERT "mf.c: SIGINT to init failed (%d), hard shutdown commencingn", rc );
- mf_powerOff();
- }
- else
- printk( KERN_INFO "mf.c: init has been successfully notified to proceed with shutdownn" );
- return rc;
- }
- /*
- * The primary partition VSP object is sending us a new
- * event flow. Handle it...
- */
- static void intReceived( struct IoMFLpEvent * event )
- {
- int freeIt = 0;
- struct StackElement * two = NULL;
- /* ack the interrupt */
- event->xHvLpEvent.xRc = HvLpEvent_Rc_Good;
- HvCallEvent_ackLpEvent( &event->xHvLpEvent );
- /* process interrupt */
- switch( event->xHvLpEvent.xSubtype )
- {
- case 0: /* CE message */
- switch( event->xUnion.xCEMsgData.xCEMsg[3] )
- {
- case 0x5B: /* power control notification */
- if ( (event->xUnion.xCEMsgData.xCEMsg[5]&0x20) != 0 )
- {
- printk( KERN_INFO "mf.c: Commencing partition shutdownn" );
- if ( shutdown() == 0 )
- signalCEMsg( "x00x00x00xDBx00x00x00x00x00x00x00x00", NULL );
- }
- break;
- case 0xC0: /* get time */
- {
- if ( (head != NULL) && ( head->event.xUnion.xCEMsgData.xCEMsg[3] == 0x40 ) )
- {
- freeIt = 1;
- if ( head->event.xUnion.xCEMsgData.xToken != 0 )
- {
- CeMsgCompleteHandler xHdlr = head->event.xUnion.xCEMsgData.xToken->xHdlr;
- void * token = head->event.xUnion.xCEMsgData.xToken->xToken;
- if (xHdlr != NULL)
- (*xHdlr)( token, &(event->xUnion.xCEMsgData) );
- }
- }
- }
- break;
- }
- /* remove from queue */
- if ( freeIt == 1 )
- {
- unsigned long flags;
- spin_lock_irqsave( &spinlock, flags );
- if ( head != NULL )
- {
- struct StackElement *oldHead = head;
- head = head->next;
- two = head;
- free( oldHead );
- }
- spin_unlock_irqrestore( &spinlock, flags );
- }
- /* send next waiting event */
- if ( two != NULL )
- signalEvent( NULL );
- break;
- case 1: /* IT sys shutdown */
- printk( KERN_INFO "mf.c: Commencing system shutdownn" );
- shutdown();
- break;
- }
- }
- /*
- * The primary partition VSP object is acknowledging the receipt
- * of a flow we sent to them. If there are other flows queued
- * up, we must send another one now...
- */
- static void ackReceived( struct IoMFLpEvent * event )
- {
- unsigned long flags;
- struct StackElement * two = NULL;
- unsigned long freeIt = 0;
- /* handle current event */
- if ( head != NULL )
- {
- switch( event->xHvLpEvent.xSubtype )
- {
- case 0: /* CE msg */
- if ( event->xUnion.xCEMsgData.xCEMsg[3] == 0x40 )
- {
- if ( event->xUnion.xCEMsgData.xCEMsg[2] != 0 )
- {
- freeIt = 1;
- if ( head->event.xUnion.xCEMsgData.xToken != 0 )
- {
- CeMsgCompleteHandler xHdlr = head->event.xUnion.xCEMsgData.xToken->xHdlr;
- void * token = head->event.xUnion.xCEMsgData.xToken->xToken;
- if (xHdlr != NULL)
- (*xHdlr)( token, &(event->xUnion.xCEMsgData) );
- }
- }
- } else {
- freeIt = 1;
- }
- break;
- case 4: /* allocate */
- case 5: /* deallocate */
- if ( head->hdlr != NULL )
- {
- union SafeCast mySafeCast;
- mySafeCast.ptrAsU64 = event->xHvLpEvent.xCorrelationToken;
- (*head->hdlr)( mySafeCast.ptr, event->xUnion.xAllocData.xCount );
- }
- freeIt = 1;
- break;
- case 6:
- {
- struct VspRspData *rsp = (struct VspRspData *)event->xUnion.xVspCmd.xTokenUnion.ptr;
- if (rsp != NULL)
- {
- if (rsp->xResponse != NULL)
- memcpy(rsp->xResponse, &(event->xUnion.xVspCmd), sizeof(event->xUnion.xVspCmd));
- if (rsp->xSemaphore != NULL)
- up(rsp->xSemaphore);
- } else {
- printk( KERN_ERR "mf.c: no rspn");
- }
- freeIt = 1;
- }
- break;
- }
- }
- else
- printk( KERN_ERR "mf.c: stack empty for receiving ackn" );
- /* remove from queue */
- spin_lock_irqsave( &spinlock, flags );
- if (( head != NULL ) && ( freeIt == 1 ))
- {
- struct StackElement *oldHead = head;
- head = head->next;
- two = head;
- free( oldHead );
- }
- spin_unlock_irqrestore( &spinlock, flags );
- /* send next waiting event */
- if ( two != NULL )
- signalEvent( NULL );
- }
- /*
- * This is the generic event handler we are registering with
- * the Hypervisor. Ensure the flows are for us, and then
- * parse it enough to know if it is an interrupt or an
- * acknowledge.
- */
- static void hvHandler( struct HvLpEvent * event, struct pt_regs * regs )
- {
- if ( (event != NULL) && (event->xType == HvLpEvent_Type_MachineFac) )
- {
- switch( event->xFlags.xFunction )
- {
- case HvLpEvent_Function_Ack:
- ackReceived( (struct IoMFLpEvent *)event );
- break;
- case HvLpEvent_Function_Int:
- intReceived( (struct IoMFLpEvent *)event );
- break;
- default:
- printk( KERN_ERR "mf.c: non ack/int event receivedn" );
- break;
- }
- }
- else
- printk( KERN_ERR "mf.c: alien event receivedn" );
- }
- /*
- * Global kernel interface to allocate and seed events into the
- * Hypervisor.
- */
- void mf_allocateLpEvents( HvLpIndex targetLp,
- HvLpEvent_Type type,
- unsigned size,
- unsigned count,
- MFCompleteHandler hdlr,
- void * userToken )
- {
- struct StackElement * newElement = newStackElement();
- int rc = 0;
- if ( newElement == NULL )
- rc = -ENOMEM;
- else {
- union SafeCast mine;
- mine.ptr = userToken;
- newElement->event.xHvLpEvent.xSubtype = 4;
- newElement->event.xHvLpEvent.xCorrelationToken = mine.ptrAsU64;
- newElement->event.xHvLpEvent.x.xSubtypeData = ('M'<<24)+('F'<<16)+('M'<<8)+('A'<<0);
- newElement->event.xUnion.xAllocData.xTargetLp = targetLp;
- newElement->event.xUnion.xAllocData.xType = type;
- newElement->event.xUnion.xAllocData.xSize = size;
- newElement->event.xUnion.xAllocData.xCount = count;
- newElement->hdlr = hdlr;
- rc = signalEvent(newElement);
- }
- if ( (rc != 0) && (hdlr != NULL) )
- (*hdlr)( userToken, rc );
- }
- /*
- * 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 StackElement * newElement = newStackElement();
- int rc = 0;
- if ( newElement == NULL )
- rc = -ENOMEM;
- else {
- union SafeCast mine;
- mine.ptr = userToken;
- newElement->event.xHvLpEvent.xSubtype = 5;
- newElement->event.xHvLpEvent.xCorrelationToken = mine.ptrAsU64;
- newElement->event.xHvLpEvent.x.xSubtypeData = ('M'<<24)+('F'<<16)+('M'<<8)+('D'<<0);
- newElement->event.xUnion.xAllocData.xTargetLp = targetLp;
- newElement->event.xUnion.xAllocData.xType = type;
- newElement->event.xUnion.xAllocData.xCount = count;
- newElement->hdlr = hdlr;
- rc = signalEvent(newElement);
- }
- if ( (rc != 0) && (hdlr != NULL) )
- (*hdlr)( userToken, rc );
- }
- /*
- * 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" );
- signalCEMsg( "x00x00x00x4Dx00x00x00x00x00x00x00x00", 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" );
- signalCEMsg( "x00x00x00x4Ex00x00x00x00x00x00x00x00", NULL );
- for (;;);
- }
- /*
- * Display a single word SRC onto the VSP control panel.
- */
- void mf_displaySrc( u32 word )
- {
- u8 ce[12];
- memcpy( ce, "x00x00x00x4Ax00x00x00x01x00x00x00x00", 12 );
- ce[8] = word>>24;
- ce[9] = word>>16;
- ce[10] = word>>8;
- ce[11] = word;
- signalCEMsg( 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, "x00x00x04x4Ax00x00x00x48x00x00x00x00", 12 );
- memcpy( src,
- "x01x00x00x01"
- "x00x00x00x00"
- "x00x00x00x00"
- "x00x00x00x00"
- "x00x00x00x00"
- "x00x00x00x00"
- "x00x00x00x00"
- "x00x00x00x00"
- "x00x00x00x00"
- "x00x00x00x00"
- "PROGxxxx"
- " ",
- 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];
- dmaAndSignalCEMsg( 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 )
- {
- signalCEMsg( "x00x00x00x4Bx00x00x00x00x00x00x00x00", NULL );
- }
- /*
- * Initialization code here.
- */
- void mf_init( void )
- {
- int i;
- /* initialize */
- spin_lock_init( &spinlock );
- for ( i = 0; i < sizeof(prealloc)/sizeof(*prealloc); ++i )
- free( &prealloc[i] );
- HvLpEvent_registerHandler( HvLpEvent_Type_MachineFac, &hvHandler );
- /* virtual continue ack */
- signalCEMsg( "x00x00x00x57x00x00x00x00x00x00x00x00", NULL );
- /* initialization complete */
- printk( KERN_NOTICE "mf.c: iSeries Linux LPAR Machine Facilities initializedn" );
- iSeries_proc_callback(&mf_proc_init);
- }
- void mf_setSide(char side)
- {
- int rc = 0;
- u64 newSide = 0;
- struct VspCmdData myVspCmd;
- memset(&myVspCmd, 0, sizeof(myVspCmd));
- if (side == 'A')
- newSide = 0;
- else if (side == 'B')
- newSide = 1;
- else if (side == 'C')
- newSide = 2;
- else
- newSide = 3;
- myVspCmd.xSubData.xFunction02SelectIplTypeIn.xIplType = newSide;
- myVspCmd.xCmd = 10;
- rc = signalVspInstruction(&myVspCmd);
- }
- char mf_getSide(void)
- {
- char returnValue = ' ';
- int rc = 0;
- struct VspCmdData myVspCmd;
- memset(&myVspCmd, 0, sizeof(myVspCmd));
- myVspCmd.xCmd = 2;
- myVspCmd.xSubData.xFunction02SelectIplTypeIn.xIplType = 0;
- mb();
- rc = signalVspInstruction(&myVspCmd);
- if (rc != 0)
- {
- return returnValue;
- } else {
- if (myVspCmd.xRc == 0)
- {
- if (myVspCmd.xSubData.xGetIplTypeOut.xIplType == 0)
- returnValue = 'A';
- else if (myVspCmd.xSubData.xGetIplTypeOut.xIplType == 1)
- returnValue = 'B';
- else if (myVspCmd.xSubData.xGetIplTypeOut.xIplType == 2)
- returnValue = 'C';
- else
- returnValue = 'D';
- }
- }
- return returnValue;
- }
- void mf_getSrcHistory(char *buffer, int size)
- {
- /* struct IplTypeReturnStuff returnStuff;
- struct StackElement * newElement = newStackElement();
- 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 (( newElement == NULL ) || (pages[0] == NULL) || (pages[1] == NULL) || (pages[2] == NULL) || (pages[3] == NULL))
- rc = -ENOMEM;
- else
- {
- returnStuff.xType = 0;
- returnStuff.xRc = 0;
- returnStuff.xDone = 0;
- newElement->event.xHvLpEvent.xSubtype = 6;
- newElement->event.xHvLpEvent.x.xSubtypeData = ('M'<<24)+('F'<<16)+('V'<<8)+('I'<<0);
- newElement->event.xUnion.xVspCmd.xEvent = &returnStuff;
- newElement->event.xUnion.xVspCmd.xCmd = 4;
- newElement->event.xUnion.xVspCmd.xLpIndex = HvLpConfig_getLpIndex();
- newElement->event.xUnion.xVspCmd.xRc = 0xFF;
- newElement->event.xUnion.xVspCmd.xReserved1 = 0;
- newElement->event.xUnion.xVspCmd.xSubData.xGetSrcHistoryIn.xPage[0] = (0x8000000000000000ULL | virt_to_absolute((unsigned long)pages[0]));
- newElement->event.xUnion.xVspCmd.xSubData.xGetSrcHistoryIn.xPage[1] = (0x8000000000000000ULL | virt_to_absolute((unsigned long)pages[1]));
- newElement->event.xUnion.xVspCmd.xSubData.xGetSrcHistoryIn.xPage[2] = (0x8000000000000000ULL | virt_to_absolute((unsigned long)pages[2]));
- newElement->event.xUnion.xVspCmd.xSubData.xGetSrcHistoryIn.xPage[3] = (0x8000000000000000ULL | virt_to_absolute((unsigned long)pages[3]));
- mb();
- rc = signalEvent(newElement);
- }
- if (rc != 0)
- {
- return;
- }
- else
- {
- 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]);*/
- }
- void mf_setCmdLine(const char *cmdline, int size, u64 side)
- {
- struct VspCmdData myVspCmd;
- int rc = 0;
- dma_addr_t dma_addr = 0;
- char *page = pci_alloc_consistent(iSeries_vio_dev, size, &dma_addr);
- if (page == NULL) {
- printk(KERN_ERR "mf.c: couldn't allocate memory to set command linen");
- return;
- }
- copy_from_user(page, cmdline, size);
- memset(&myVspCmd, 0, sizeof(myVspCmd));
- myVspCmd.xCmd = 31;
- myVspCmd.xSubData.xSetKernelCmdLineIn.xToken = dma_addr;
- myVspCmd.xSubData.xSetKernelCmdLineIn.xAddressType = HvLpDma_AddressType_TceIndex;
- myVspCmd.xSubData.xSetKernelCmdLineIn.xSide = side;
- myVspCmd.xSubData.xSetKernelCmdLineIn.xTransferLength = size;
- mb();
- rc = signalVspInstruction(&myVspCmd);
- pci_free_consistent(iSeries_vio_dev, size, page, dma_addr);
- }
- int mf_getCmdLine(char *cmdline, int *size, u64 side)
- {
- struct VspCmdData myVspCmd;
- int rc = 0;
- int len = *size;
- dma_addr_t dma_addr = pci_map_single(iSeries_vio_dev, cmdline, *size, PCI_DMA_FROMDEVICE);
- memset(cmdline, 0, *size);
- memset(&myVspCmd, 0, sizeof(myVspCmd));
- myVspCmd.xCmd = 33;
- myVspCmd.xSubData.xGetKernelCmdLineIn.xToken = dma_addr;
- myVspCmd.xSubData.xGetKernelCmdLineIn.xAddressType = HvLpDma_AddressType_TceIndex;
- myVspCmd.xSubData.xGetKernelCmdLineIn.xSide = side;
- myVspCmd.xSubData.xGetKernelCmdLineIn.xTransferLength = *size;
- mb();
- rc = signalVspInstruction(&myVspCmd);
- if ( ! rc ) {
- if (myVspCmd.xRc == 0)
- {
- len = myVspCmd.xSubData.xGetKernelCmdLineOut.xTransferLength;
- }
- /* else
- {
- memcpy(cmdline, "Bad cmdline", 11);
- }
- */
- }
- pci_unmap_single(iSeries_vio_dev, dma_addr, *size, PCI_DMA_FROMDEVICE);
- return len;
- }
- int mf_setVmlinuxChunk(const char *buffer, int size, int offset, u64 side)
- {
- struct VspCmdData myVspCmd;
- int rc = 0;
- dma_addr_t dma_addr = 0;
- char *page = pci_alloc_consistent(iSeries_vio_dev, size, &dma_addr);
- if (page == NULL) {
- printk(KERN_ERR "mf.c: couldn't allocate memory to set vmlinux chunkn");
- return -ENOMEM;
- }
- copy_from_user(page, buffer, size);
- memset(&myVspCmd, 0, sizeof(myVspCmd));
- myVspCmd.xCmd = 30;
- myVspCmd.xSubData.xGetKernelImageIn.xToken = dma_addr;
- myVspCmd.xSubData.xGetKernelImageIn.xAddressType = HvLpDma_AddressType_TceIndex;
- myVspCmd.xSubData.xGetKernelImageIn.xSide = side;
- myVspCmd.xSubData.xGetKernelImageIn.xOffset = offset;
- myVspCmd.xSubData.xGetKernelImageIn.xTransferLength = size;
- mb();
- rc = signalVspInstruction(&myVspCmd);
- if (rc == 0)
- {
- if (myVspCmd.xRc == 0)
- {
- rc = 0;
- } else {
- rc = -ENOMEM;
- }
- }
- pci_free_consistent(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 = 0;
- int len = *size;
- dma_addr_t dma_addr = pci_map_single(iSeries_vio_dev, buffer, *size, PCI_DMA_FROMDEVICE);
- memset(buffer, 0, len);
- memset(&myVspCmd, 0, sizeof(myVspCmd));
- myVspCmd.xCmd = 32;
- myVspCmd.xSubData.xGetKernelImageIn.xToken = dma_addr;
- myVspCmd.xSubData.xGetKernelImageIn.xAddressType = HvLpDma_AddressType_TceIndex;
- myVspCmd.xSubData.xGetKernelImageIn.xSide = side;
- myVspCmd.xSubData.xGetKernelImageIn.xOffset = offset;
- myVspCmd.xSubData.xGetKernelImageIn.xTransferLength = len;
- mb();
- rc = signalVspInstruction(&myVspCmd);
- if (rc == 0)
- {
- if (myVspCmd.xRc == 0)
- {
- *size = myVspCmd.xSubData.xGetKernelImageOut.xTransferLength;
- } else {
- rc = -ENOMEM;
- }
- }
- pci_unmap_single(iSeries_vio_dev, dma_addr, len, PCI_DMA_FROMDEVICE);
- return rc;
- }
- int mf_setRtcTime(unsigned long time)
- {
- struct rtc_time tm;
- to_tm(time, &tm);
- return mf_setRtc( &tm );
- }
- struct RtcTimeData
- {
- struct semaphore *xSemaphore;
- 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;
- up(rtc->xSemaphore);
- }
- static unsigned long lastsec = 1;
- int mf_getRtcTime(unsigned long *time)
- {
- /* unsigned long usec, tsec; */
-
- 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 = 0;
- DECLARE_MUTEX_LOCKED(Semaphore);
- memset(&ceComplete, 0, sizeof(ceComplete));
- memset(&rtcData, 0, sizeof(rtcData));
- rtcData.xSemaphore = &Semaphore;
- ceComplete.xHdlr = &getRtcTimeComplete;
- ceComplete.xToken = (void *)&rtcData;
- rc = signalCEMsg( "x00x00x00x40x00x00x00x00x00x00x00x00", &ceComplete );
- if ( rc == 0 )
- {
- down(&Semaphore);
- if ( rtcData.xRc == 0)
- {
- if ( ( rtcData.xCeMsg.xCEMsg[2] == 0xa9 ) ||
- ( rtcData.xCeMsg.xCEMsg[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.xCEMsg+4));
- u32 dataWord2 = *((u32 *)(rtcData.xCeMsg.xCEMsg+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] = "x00x00x00x41x00x00x00x00x00x00x00x00";
- int rc = 0;
- 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;
-
- rc = signalCEMsg( ceTime, NULL );
- return rc;
- }