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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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[PATCH] ppc64: Rename xItLpQueue to hvlpevent_queue
The xItLpQueue is a queue of HvLpEvents that we're given by the Hypervisor. Rename xItLpQueue to hvlpevent_queue and make the type struct hvlpevent_queue. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Michael Ellerman
Paul Mackerras
parent
ab354b6379
commit
a61874648d
@ -26,7 +26,7 @@
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*
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* It is written to by the hypervisor so cannot end up in the BSS.
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*/
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struct ItLpQueue xItLpQueue __attribute__((__section__(".data")));
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struct hvlpevent_queue hvlpevent_queue __attribute__((__section__(".data")));
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static char *event_types[9] = {
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"Hypervisor\t\t",
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@ -43,7 +43,7 @@ static char *event_types[9] = {
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static __inline__ int set_inUse(void)
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{
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int t;
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u32 * inUseP = &xItLpQueue.xInUseWord;
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u32 * inUseP = &hvlpevent_queue.xInUseWord;
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__asm__ __volatile__("\n\
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1: lwarx %0,0,%2 \n\
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@ -54,8 +54,8 @@ static __inline__ int set_inUse(void)
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stwcx. %0,0,%2 \n\
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bne- 1b \n\
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2: eieio"
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: "=&r" (t), "=m" (xItLpQueue.xInUseWord)
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: "r" (inUseP), "m" (xItLpQueue.xInUseWord)
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: "=&r" (t), "=m" (hvlpevent_queue.xInUseWord)
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: "r" (inUseP), "m" (hvlpevent_queue.xInUseWord)
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: "cc");
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return t;
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@ -63,7 +63,7 @@ static __inline__ int set_inUse(void)
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static __inline__ void clear_inUse(void)
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{
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xItLpQueue.xInUseWord = 0;
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hvlpevent_queue.xInUseWord = 0;
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}
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/* Array of LpEvent handler functions */
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@ -73,18 +73,18 @@ unsigned long ItLpQueueInProcess = 0;
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static struct HvLpEvent * ItLpQueue_getNextLpEvent(void)
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{
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struct HvLpEvent * nextLpEvent =
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(struct HvLpEvent *)xItLpQueue.xSlicCurEventPtr;
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(struct HvLpEvent *)hvlpevent_queue.xSlicCurEventPtr;
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if ( nextLpEvent->xFlags.xValid ) {
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/* rmb() needed only for weakly consistent machines (regatta) */
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rmb();
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/* Set pointer to next potential event */
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xItLpQueue.xSlicCurEventPtr += ((nextLpEvent->xSizeMinus1 +
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hvlpevent_queue.xSlicCurEventPtr += ((nextLpEvent->xSizeMinus1 +
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LpEventAlign ) /
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LpEventAlign ) *
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LpEventAlign;
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/* Wrap to beginning if no room at end */
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if (xItLpQueue.xSlicCurEventPtr > xItLpQueue.xSlicLastValidEventPtr)
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xItLpQueue.xSlicCurEventPtr = xItLpQueue.xSlicEventStackPtr;
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if (hvlpevent_queue.xSlicCurEventPtr > hvlpevent_queue.xSlicLastValidEventPtr)
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hvlpevent_queue.xSlicCurEventPtr = hvlpevent_queue.xSlicEventStackPtr;
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}
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else
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nextLpEvent = NULL;
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@ -101,8 +101,8 @@ int ItLpQueue_isLpIntPending(void)
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if (smp_processor_id() >= spread_lpevents)
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return 0;
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next_event = (struct HvLpEvent *)xItLpQueue.xSlicCurEventPtr;
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return next_event->xFlags.xValid | xItLpQueue.xPlicOverflowIntPending;
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next_event = (struct HvLpEvent *)hvlpevent_queue.xSlicCurEventPtr;
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return next_event->xFlags.xValid | hvlpevent_queue.xPlicOverflowIntPending;
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}
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static void ItLpQueue_clearValid( struct HvLpEvent * event )
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@ -145,10 +145,10 @@ unsigned ItLpQueue_process(struct pt_regs *regs)
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nextLpEvent = ItLpQueue_getNextLpEvent();
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if ( nextLpEvent ) {
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/* Count events to return to caller
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* and count processed events in xItLpQueue
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* and count processed events in hvlpevent_queue
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*/
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++numIntsProcessed;
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xItLpQueue.xLpIntCount++;
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hvlpevent_queue.xLpIntCount++;
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/* Call appropriate handler here, passing
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* a pointer to the LpEvent. The handler
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* must make a copy of the LpEvent if it
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@ -163,7 +163,7 @@ unsigned ItLpQueue_process(struct pt_regs *regs)
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* here!
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*/
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if ( nextLpEvent->xType < HvLpEvent_Type_NumTypes )
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xItLpQueue.xLpIntCountByType[nextLpEvent->xType]++;
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hvlpevent_queue.xLpIntCountByType[nextLpEvent->xType]++;
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if ( nextLpEvent->xType < HvLpEvent_Type_NumTypes &&
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lpEventHandler[nextLpEvent->xType] )
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lpEventHandler[nextLpEvent->xType](nextLpEvent, regs);
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@ -171,12 +171,12 @@ unsigned ItLpQueue_process(struct pt_regs *regs)
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printk(KERN_INFO "Unexpected Lp Event type=%d\n", nextLpEvent->xType );
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ItLpQueue_clearValid( nextLpEvent );
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} else if ( xItLpQueue.xPlicOverflowIntPending )
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} else if ( hvlpevent_queue.xPlicOverflowIntPending )
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/*
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* No more valid events. If overflow events are
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* pending process them
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*/
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HvCallEvent_getOverflowLpEvents( xItLpQueue.xIndex);
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HvCallEvent_getOverflowLpEvents( hvlpevent_queue.xIndex);
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else
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break;
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}
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@ -224,11 +224,11 @@ void setup_hvlpevent_queue(void)
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/* Invoke the hypervisor to initialize the event stack */
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HvCallEvent_setLpEventStack(0, eventStack, LpEventStackSize);
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xItLpQueue.xSlicEventStackPtr = (char *)eventStack;
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xItLpQueue.xSlicCurEventPtr = (char *)eventStack;
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xItLpQueue.xSlicLastValidEventPtr = (char *)eventStack +
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hvlpevent_queue.xSlicEventStackPtr = (char *)eventStack;
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hvlpevent_queue.xSlicCurEventPtr = (char *)eventStack;
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hvlpevent_queue.xSlicLastValidEventPtr = (char *)eventStack +
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(LpEventStackSize - LpEventMaxSize);
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xItLpQueue.xIndex = 0;
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hvlpevent_queue.xIndex = 0;
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}
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static int proc_lpevents_show(struct seq_file *m, void *v)
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@ -237,11 +237,11 @@ static int proc_lpevents_show(struct seq_file *m, void *v)
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seq_printf(m, "LpEventQueue 0\n");
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seq_printf(m, " events processed:\t%lu\n",
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(unsigned long)xItLpQueue.xLpIntCount);
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(unsigned long)hvlpevent_queue.xLpIntCount);
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for (i = 0; i < 9; ++i)
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seq_printf(m, " %s %10lu\n", event_types[i],
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(unsigned long)xItLpQueue.xLpIntCountByType[i]);
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(unsigned long)hvlpevent_queue.xLpIntCountByType[i]);
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seq_printf(m, "\n events processed by processor:\n");
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@ -193,7 +193,7 @@ struct ItVpdAreas itVpdAreas = {
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0,0,0, /* 13 - 15 */
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sizeof(struct IoHriProcessorVpd),/* 16 length of Proc Vpd */
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0,0,0,0,0,0, /* 17 - 22 */
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sizeof(struct ItLpQueue),/* 23 length of Lp Queue */
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sizeof(struct hvlpevent_queue), /* 23 length of Lp Queue */
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0,0 /* 24 - 25 */
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},
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.xSlicVpdAdrs = { /* VPD addresses */
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@ -211,7 +211,7 @@ struct ItVpdAreas itVpdAreas = {
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0,0,0, /* 13 - 15 */
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&xIoHriProcessorVpd, /* 16 Proc Vpd */
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0,0,0,0,0,0, /* 17 - 22 */
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&xItLpQueue, /* 23 Lp Queue */
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&hvlpevent_queue, /* 23 Lp Queue */
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0,0
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}
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};
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@ -41,7 +41,7 @@ struct HvLpEvent;
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#define LpEventMaxSize 256
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#define LpEventAlign 64
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struct ItLpQueue {
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struct hvlpevent_queue {
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/*
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* The xSlicCurEventPtr is the pointer to the next event stack entry
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* that will become valid. The OS must peek at this entry to determine
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@ -74,7 +74,7 @@ struct ItLpQueue {
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u64 xLpIntCountByType[9]; // 0x38-0x7F Event counts by type
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};
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extern struct ItLpQueue xItLpQueue;
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extern struct hvlpevent_queue hvlpevent_queue;
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extern int ItLpQueue_isLpIntPending(void);
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extern unsigned ItLpQueue_process(struct pt_regs *);
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