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Viewing changes to arch/powerpc/platforms/iseries/exception.S

  • Committer: Package Import Robot
  • Author(s): John Rigby, John Rigby
  • Date: 2011-09-26 10:44:23 UTC
  • Revision ID: package-import@ubuntu.com-20110926104423-57i0gl3v99b3lkfg
Tags: 3.0.0-1007.9
https://launchpad.net/bugs/826021
[ John Rigby ]

Enable crypto modules and remove crypto-modules from
exclude-module files
LP: #826021

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arch/powerpc/platforms/iseries/exception.S
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#include <asm/thread_info.h>
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#include <asm/ptrace.h>
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#include <asm/cputable.h>
 
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#include <asm/mmu.h>
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#include "exception.h"
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/* Spin on __secondary_hold_spinloop until it is updated by the boot cpu. */
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/* In the UP case we'll yield() later, and we will not access the paca anyway */
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#ifdef CONFIG_SMP
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1:
 
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iSeries_secondary_wait_paca:
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        HMT_LOW
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        LOAD_REG_ADDR(r23, __secondary_hold_spinloop)
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        ld      r23,0(r23)
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        sync
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        LOAD_REG_ADDR(r3,current_set)
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        sldi    r28,r24,3               /* get current_set[cpu#] */
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        ldx     r3,r3,r28
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        addi    r1,r3,THREAD_SIZE
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        subi    r1,r1,STACK_FRAME_OVERHEAD
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        cmpwi   0,r23,0                 /* Keep poking the Hypervisor until */
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        bne     2f                      /* we're released */
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        /* Let the Hypervisor know we are alive */
 
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        cmpdi   0,r23,0
 
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        bne     2f                      /* go on when the master is ready */
 
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        /* Keep poking the Hypervisor until we're released */
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        /* 8002 is a call to HvCallCfg::getLps, a harmless Hypervisor function */
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        lis     r3,0x8002
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        rldicr  r3,r3,32,15             /* r0 = (r3 << 32) & 0xffff000000000000 */
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        li      r0,-1                   /* r0=-1 indicates a Hypervisor call */
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        sc                              /* Invoke the hypervisor via a system call */
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        b       1b
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#endif
 
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        b       iSeries_secondary_wait_paca
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2:
 
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        HMT_MEDIUM
 
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        sync
 
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        LOAD_REG_ADDR(r3, nr_cpu_ids)   /* get number of pacas allocated */
 
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        lwz     r3,0(r3)                /* nr_cpus= or NR_CPUS can limit */
 
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        cmpld   0,r24,r3                /* is our cpu number allocated? */
 
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        bge     iSeries_secondary_yield /* no, yield forever */
 
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        /* Load our paca now that it's been allocated */
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        LOAD_REG_ADDR(r13, paca)
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        ld      r13,0(r13)
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        ori     r23,r23,MSR_RI
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        mtmsrd  r23                     /* RI on */
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        HMT_LOW
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#ifdef CONFIG_SMP
 
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iSeries_secondary_smp_loop:
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        lbz     r23,PACAPROCSTART(r13)  /* Test if this processor
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                                         * should start */
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        sync
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        LOAD_REG_ADDR(r3,current_set)
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        sldi    r28,r24,3               /* get current_set[cpu#] */
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        ldx     r3,r3,r28
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        addi    r1,r3,THREAD_SIZE
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        subi    r1,r1,STACK_FRAME_OVERHEAD
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        cmpwi   0,r23,0
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        beq     iSeries_secondary_smp_loop      /* Loop until told to go */
 
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        bne     3f                      /* go on when we are told */
 
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        HMT_LOW
 
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        /* Let the Hypervisor know we are alive */
 
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        /* 8002 is a call to HvCallCfg::getLps, a harmless Hypervisor function */
 
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        lis     r3,0x8002
 
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        rldicr  r3,r3,32,15             /* r0 = (r3 << 32) & 0xffff000000000000 */
 
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        li      r0,-1                   /* r0=-1 indicates a Hypervisor call */
 
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        sc                              /* Invoke the hypervisor via a system call */
 
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        mfspr   r13,SPRN_SPRG_PACA      /* Put r13 back ???? */
 
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        b       iSeries_secondary_smp_loop /* wait for signal to start */
 
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3:
 
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        HMT_MEDIUM
 
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        sync
 
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        LOAD_REG_ADDR(r3,current_set)
 
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        sldi    r28,r24,3               /* get current_set[cpu#] */
 
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        ldx     r3,r3,r28
 
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        addi    r1,r3,THREAD_SIZE
 
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        subi    r1,r1,STACK_FRAME_OVERHEAD
 
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        b       __secondary_start               /* Loop until told to go */
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iSeries_secondary_smp_loop:
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        /* Let the Hypervisor know we are alive */
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        /* 8002 is a call to HvCallCfg::getLps, a harmless Hypervisor function */
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        lis     r3,0x8002
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        rldicr  r3,r3,32,15             /* r0 = (r3 << 32) & 0xffff000000000000 */
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#else /* CONFIG_SMP */
 
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#endif /* CONFIG_SMP */
 
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iSeries_secondary_yield:
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        /* Yield the processor.  This is required for non-SMP kernels
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                which are running on multi-threaded machines. */
 
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        HMT_LOW
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        lis     r3,0x8000
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        rldicr  r3,r3,32,15             /* r3 = (r3 << 32) & 0xffff000000000000 */
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        addi    r3,r3,18                /* r3 = 0x8000000000000012 which is "yield" */
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        li      r4,0                    /* "yield timed" */
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        li      r5,-1                   /* "yield forever" */
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#endif /* CONFIG_SMP */
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        li      r0,-1                   /* r0=-1 indicates a Hypervisor call */
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        sc                              /* Invoke the hypervisor via a system call */
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        mfspr   r13,SPRN_SPRG_PACA      /* Put r13 back ???? */
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        b       2b                      /* If SMP not configured, secondaries
 
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        b       iSeries_secondary_yield /* If SMP not configured, secondaries
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                                         * loop forever */
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/***  ISeries-LPAR interrupt handlers ***/
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FTR_SECTION_ELSE
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        EXCEPTION_PROLOG_1(PACA_EXGEN)
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        EXCEPTION_PROLOG_ISERIES_1
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ALT_FTR_SECTION_END_IFCLR(CPU_FTR_SLB)
 
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ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_SLB)
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        b       data_access_common
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.do_stab_bolted_iSeries: