forked from Minki/linux
powerpc/booke64: Add DO_KVM kernel hooks
Hook DO_KVM macro into 64-bit booke for KVM integration. Extend interrupt handlers' parameter list with interrupt vector numbers to accomodate the macro. Only the bolted version of tlb miss handers is addressed now. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Mihai Caraman
Benjamin Herrenschmidt
parent
5473eb1c07
commit
fecff0f724
@ -25,6 +25,8 @@
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#include <asm/ppc-opcode.h>
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#include <asm/mmu.h>
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#include <asm/hw_irq.h>
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#include <asm/kvm_asm.h>
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#include <asm/kvm_booke_hv_asm.h>
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/* XXX This will ultimately add space for a special exception save
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* structure used to save things like SRR0/SRR1, SPRGs, MAS, etc...
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@ -35,12 +37,14 @@
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#define SPECIAL_EXC_FRAME_SIZE INT_FRAME_SIZE
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/* Exception prolog code for all exceptions */
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#define EXCEPTION_PROLOG(n, type, addition) \
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#define EXCEPTION_PROLOG(n, intnum, type, addition) \
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mtspr SPRN_SPRG_##type##_SCRATCH,r13; /* get spare registers */ \
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mfspr r13,SPRN_SPRG_PACA; /* get PACA */ \
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std r10,PACA_EX##type+EX_R10(r13); \
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std r11,PACA_EX##type+EX_R11(r13); \
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mfcr r10; /* save CR */ \
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mfspr r11,SPRN_##type##_SRR1;/* what are we coming from */ \
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DO_KVM intnum,SPRN_##type##_SRR1; /* KVM hook */ \
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addition; /* additional code for that exc. */ \
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std r1,PACA_EX##type+EX_R1(r13); /* save old r1 in the PACA */ \
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stw r10,PACA_EX##type+EX_CR(r13); /* save old CR in the PACA */ \
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@ -81,20 +85,20 @@
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#define SPRN_MC_SRR0 SPRN_MCSRR0
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#define SPRN_MC_SRR1 SPRN_MCSRR1
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#define NORMAL_EXCEPTION_PROLOG(n, addition) \
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EXCEPTION_PROLOG(n, GEN, addition##_GEN(n))
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#define NORMAL_EXCEPTION_PROLOG(n, intnum, addition) \
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EXCEPTION_PROLOG(n, intnum, GEN, addition##_GEN(n))
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#define CRIT_EXCEPTION_PROLOG(n, addition) \
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EXCEPTION_PROLOG(n, CRIT, addition##_CRIT(n))
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#define CRIT_EXCEPTION_PROLOG(n, intnum, addition) \
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EXCEPTION_PROLOG(n, intnum, CRIT, addition##_CRIT(n))
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#define DBG_EXCEPTION_PROLOG(n, addition) \
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EXCEPTION_PROLOG(n, DBG, addition##_DBG(n))
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#define DBG_EXCEPTION_PROLOG(n, intnum, addition) \
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EXCEPTION_PROLOG(n, intnum, DBG, addition##_DBG(n))
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#define MC_EXCEPTION_PROLOG(n, addition) \
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EXCEPTION_PROLOG(n, MC, addition##_MC(n))
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#define MC_EXCEPTION_PROLOG(n, intnum, addition) \
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EXCEPTION_PROLOG(n, intnum, MC, addition##_MC(n))
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#define GDBELL_EXCEPTION_PROLOG(n, addition) \
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EXCEPTION_PROLOG(n, GDBELL, addition##_GDBELL(n))
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#define GDBELL_EXCEPTION_PROLOG(n, intnum, addition) \
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EXCEPTION_PROLOG(n, intnum, GDBELL, addition##_GDBELL(n))
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/* Variants of the "addition" argument for the prolog
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*/
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@ -240,9 +244,9 @@ exc_##n##_bad_stack: \
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1:
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#define MASKABLE_EXCEPTION(trapnum, label, hdlr, ack) \
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#define MASKABLE_EXCEPTION(trapnum, intnum, label, hdlr, ack) \
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START_EXCEPTION(label); \
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NORMAL_EXCEPTION_PROLOG(trapnum, PROLOG_ADDITION_MASKABLE) \
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NORMAL_EXCEPTION_PROLOG(trapnum, intnum, PROLOG_ADDITION_MASKABLE)\
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EXCEPTION_COMMON(trapnum, PACA_EXGEN, INTS_DISABLE) \
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ack(r8); \
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CHECK_NAPPING(); \
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@ -293,7 +297,8 @@ interrupt_end_book3e:
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/* Critical Input Interrupt */
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START_EXCEPTION(critical_input);
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CRIT_EXCEPTION_PROLOG(0x100, PROLOG_ADDITION_NONE)
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CRIT_EXCEPTION_PROLOG(0x100, BOOKE_INTERRUPT_CRITICAL,
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PROLOG_ADDITION_NONE)
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// EXCEPTION_COMMON(0x100, PACA_EXCRIT, INTS_DISABLE)
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// bl special_reg_save_crit
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// CHECK_NAPPING();
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@ -304,7 +309,8 @@ interrupt_end_book3e:
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/* Machine Check Interrupt */
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START_EXCEPTION(machine_check);
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MC_EXCEPTION_PROLOG(0x200, PROLOG_ADDITION_NONE)
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MC_EXCEPTION_PROLOG(0x200, BOOKE_INTERRUPT_MACHINE_CHECK,
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PROLOG_ADDITION_NONE)
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// EXCEPTION_COMMON(0x200, PACA_EXMC, INTS_DISABLE)
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// bl special_reg_save_mc
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// addi r3,r1,STACK_FRAME_OVERHEAD
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@ -315,7 +321,8 @@ interrupt_end_book3e:
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/* Data Storage Interrupt */
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START_EXCEPTION(data_storage)
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NORMAL_EXCEPTION_PROLOG(0x300, PROLOG_ADDITION_2REGS)
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NORMAL_EXCEPTION_PROLOG(0x300, BOOKE_INTERRUPT_DATA_STORAGE,
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PROLOG_ADDITION_2REGS)
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mfspr r14,SPRN_DEAR
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mfspr r15,SPRN_ESR
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EXCEPTION_COMMON(0x300, PACA_EXGEN, INTS_DISABLE)
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@ -323,18 +330,21 @@ interrupt_end_book3e:
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/* Instruction Storage Interrupt */
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START_EXCEPTION(instruction_storage);
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NORMAL_EXCEPTION_PROLOG(0x400, PROLOG_ADDITION_2REGS)
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NORMAL_EXCEPTION_PROLOG(0x400, BOOKE_INTERRUPT_INST_STORAGE,
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PROLOG_ADDITION_2REGS)
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li r15,0
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mr r14,r10
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EXCEPTION_COMMON(0x400, PACA_EXGEN, INTS_DISABLE)
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b storage_fault_common
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/* External Input Interrupt */
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MASKABLE_EXCEPTION(0x500, external_input, .do_IRQ, ACK_NONE)
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MASKABLE_EXCEPTION(0x500, BOOKE_INTERRUPT_EXTERNAL,
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external_input, .do_IRQ, ACK_NONE)
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/* Alignment */
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START_EXCEPTION(alignment);
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NORMAL_EXCEPTION_PROLOG(0x600, PROLOG_ADDITION_2REGS)
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NORMAL_EXCEPTION_PROLOG(0x600, BOOKE_INTERRUPT_ALIGNMENT,
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PROLOG_ADDITION_2REGS)
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mfspr r14,SPRN_DEAR
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mfspr r15,SPRN_ESR
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EXCEPTION_COMMON(0x600, PACA_EXGEN, INTS_KEEP)
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@ -342,7 +352,8 @@ interrupt_end_book3e:
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/* Program Interrupt */
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START_EXCEPTION(program);
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NORMAL_EXCEPTION_PROLOG(0x700, PROLOG_ADDITION_1REG)
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NORMAL_EXCEPTION_PROLOG(0x700, BOOKE_INTERRUPT_PROGRAM,
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PROLOG_ADDITION_1REG)
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mfspr r14,SPRN_ESR
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EXCEPTION_COMMON(0x700, PACA_EXGEN, INTS_DISABLE)
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std r14,_DSISR(r1)
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@ -354,7 +365,8 @@ interrupt_end_book3e:
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/* Floating Point Unavailable Interrupt */
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START_EXCEPTION(fp_unavailable);
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NORMAL_EXCEPTION_PROLOG(0x800, PROLOG_ADDITION_NONE)
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NORMAL_EXCEPTION_PROLOG(0x800, BOOKE_INTERRUPT_FP_UNAVAIL,
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PROLOG_ADDITION_NONE)
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/* we can probably do a shorter exception entry for that one... */
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EXCEPTION_COMMON(0x800, PACA_EXGEN, INTS_KEEP)
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ld r12,_MSR(r1)
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@ -369,14 +381,17 @@ interrupt_end_book3e:
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b .ret_from_except
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/* Decrementer Interrupt */
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MASKABLE_EXCEPTION(0x900, decrementer, .timer_interrupt, ACK_DEC)
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MASKABLE_EXCEPTION(0x900, BOOKE_INTERRUPT_DECREMENTER,
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decrementer, .timer_interrupt, ACK_DEC)
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/* Fixed Interval Timer Interrupt */
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MASKABLE_EXCEPTION(0x980, fixed_interval, .unknown_exception, ACK_FIT)
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MASKABLE_EXCEPTION(0x980, BOOKE_INTERRUPT_FIT,
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fixed_interval, .unknown_exception, ACK_FIT)
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/* Watchdog Timer Interrupt */
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START_EXCEPTION(watchdog);
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CRIT_EXCEPTION_PROLOG(0x9f0, PROLOG_ADDITION_NONE)
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CRIT_EXCEPTION_PROLOG(0x9f0, BOOKE_INTERRUPT_WATCHDOG,
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PROLOG_ADDITION_NONE)
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// EXCEPTION_COMMON(0x9f0, PACA_EXCRIT, INTS_DISABLE)
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// bl special_reg_save_crit
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// CHECK_NAPPING();
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@ -395,7 +410,8 @@ interrupt_end_book3e:
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/* Auxiliary Processor Unavailable Interrupt */
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START_EXCEPTION(ap_unavailable);
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NORMAL_EXCEPTION_PROLOG(0xf20, PROLOG_ADDITION_NONE)
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NORMAL_EXCEPTION_PROLOG(0xf20, BOOKE_INTERRUPT_AP_UNAVAIL,
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PROLOG_ADDITION_NONE)
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EXCEPTION_COMMON(0xf20, PACA_EXGEN, INTS_DISABLE)
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bl .save_nvgprs
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addi r3,r1,STACK_FRAME_OVERHEAD
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@ -404,7 +420,8 @@ interrupt_end_book3e:
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/* Debug exception as a critical interrupt*/
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START_EXCEPTION(debug_crit);
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CRIT_EXCEPTION_PROLOG(0xd00, PROLOG_ADDITION_2REGS)
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CRIT_EXCEPTION_PROLOG(0xd00, BOOKE_INTERRUPT_DEBUG,
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PROLOG_ADDITION_2REGS)
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/*
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* If there is a single step or branch-taken exception in an
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@ -469,7 +486,8 @@ kernel_dbg_exc:
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/* Debug exception as a debug interrupt*/
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START_EXCEPTION(debug_debug);
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DBG_EXCEPTION_PROLOG(0xd08, PROLOG_ADDITION_2REGS)
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DBG_EXCEPTION_PROLOG(0xd00, BOOKE_INTERRUPT_DEBUG,
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PROLOG_ADDITION_2REGS)
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/*
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* If there is a single step or branch-taken exception in an
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@ -530,18 +548,21 @@ kernel_dbg_exc:
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b .ret_from_except
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START_EXCEPTION(perfmon);
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NORMAL_EXCEPTION_PROLOG(0x260, PROLOG_ADDITION_NONE)
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NORMAL_EXCEPTION_PROLOG(0x260, BOOKE_INTERRUPT_PERFORMANCE_MONITOR,
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PROLOG_ADDITION_NONE)
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EXCEPTION_COMMON(0x260, PACA_EXGEN, INTS_DISABLE)
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addi r3,r1,STACK_FRAME_OVERHEAD
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bl .performance_monitor_exception
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b .ret_from_except_lite
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/* Doorbell interrupt */
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MASKABLE_EXCEPTION(0x280, doorbell, .doorbell_exception, ACK_NONE)
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MASKABLE_EXCEPTION(0x280, BOOKE_INTERRUPT_DOORBELL,
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doorbell, .doorbell_exception, ACK_NONE)
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/* Doorbell critical Interrupt */
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START_EXCEPTION(doorbell_crit);
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CRIT_EXCEPTION_PROLOG(0x2a0, PROLOG_ADDITION_NONE)
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CRIT_EXCEPTION_PROLOG(0x2a0, BOOKE_INTERRUPT_DOORBELL_CRITICAL,
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PROLOG_ADDITION_NONE)
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// EXCEPTION_COMMON(0x2a0, PACA_EXCRIT, INTS_DISABLE)
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// bl special_reg_save_crit
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// CHECK_NAPPING();
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@ -555,7 +576,8 @@ kernel_dbg_exc:
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* This general exception use GSRRx save/restore registers
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*/
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START_EXCEPTION(guest_doorbell);
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GDBELL_EXCEPTION_PROLOG(0x2c0, PROLOG_ADDITION_NONE)
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GDBELL_EXCEPTION_PROLOG(0x2c0, BOOKE_INTERRUPT_GUEST_DBELL,
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PROLOG_ADDITION_NONE)
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EXCEPTION_COMMON(0x2c0, PACA_EXGEN, INTS_KEEP)
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addi r3,r1,STACK_FRAME_OVERHEAD
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bl .save_nvgprs
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@ -565,7 +587,8 @@ kernel_dbg_exc:
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/* Guest Doorbell critical Interrupt */
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START_EXCEPTION(guest_doorbell_crit);
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CRIT_EXCEPTION_PROLOG(0x2e0, PROLOG_ADDITION_NONE)
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CRIT_EXCEPTION_PROLOG(0x2e0, BOOKE_INTERRUPT_GUEST_DBELL_CRIT,
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PROLOG_ADDITION_NONE)
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// EXCEPTION_COMMON(0x2e0, PACA_EXCRIT, INTS_DISABLE)
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// bl special_reg_save_crit
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// CHECK_NAPPING();
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@ -576,7 +599,8 @@ kernel_dbg_exc:
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/* Hypervisor call */
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START_EXCEPTION(hypercall);
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NORMAL_EXCEPTION_PROLOG(0x310, PROLOG_ADDITION_NONE)
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NORMAL_EXCEPTION_PROLOG(0x310, BOOKE_INTERRUPT_HV_SYSCALL,
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PROLOG_ADDITION_NONE)
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EXCEPTION_COMMON(0x310, PACA_EXGEN, INTS_KEEP)
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addi r3,r1,STACK_FRAME_OVERHEAD
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bl .save_nvgprs
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@ -586,7 +610,8 @@ kernel_dbg_exc:
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/* Embedded Hypervisor priviledged */
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START_EXCEPTION(ehpriv);
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NORMAL_EXCEPTION_PROLOG(0x320, PROLOG_ADDITION_NONE)
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NORMAL_EXCEPTION_PROLOG(0x320, BOOKE_INTERRUPT_HV_PRIV,
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PROLOG_ADDITION_NONE)
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EXCEPTION_COMMON(0x320, PACA_EXGEN, INTS_KEEP)
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addi r3,r1,STACK_FRAME_OVERHEAD
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bl .save_nvgprs
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@ -20,6 +20,8 @@
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#include <asm/pgtable.h>
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#include <asm/exception-64e.h>
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#include <asm/ppc-opcode.h>
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#include <asm/kvm_asm.h>
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#include <asm/kvm_booke_hv_asm.h>
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#ifdef CONFIG_PPC_64K_PAGES
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#define VPTE_PMD_SHIFT (PTE_INDEX_SIZE+1)
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@ -37,12 +39,18 @@
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* *
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**********************************************************************/
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.macro tlb_prolog_bolted addr
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.macro tlb_prolog_bolted intnum addr
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mtspr SPRN_SPRG_TLB_SCRATCH,r13
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mfspr r13,SPRN_SPRG_PACA
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std r10,PACA_EXTLB+EX_TLB_R10(r13)
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mfcr r10
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std r11,PACA_EXTLB+EX_TLB_R11(r13)
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#ifdef CONFIG_KVM_BOOKE_HV
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BEGIN_FTR_SECTION
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mfspr r11, SPRN_SRR1
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END_FTR_SECTION_IFSET(CPU_FTR_EMB_HV)
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#endif
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DO_KVM \intnum, SPRN_SRR1
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std r16,PACA_EXTLB+EX_TLB_R16(r13)
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mfspr r16,\addr /* get faulting address */
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std r14,PACA_EXTLB+EX_TLB_R14(r13)
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@ -66,7 +74,7 @@
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/* Data TLB miss */
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START_EXCEPTION(data_tlb_miss_bolted)
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tlb_prolog_bolted SPRN_DEAR
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tlb_prolog_bolted BOOKE_INTERRUPT_DTLB_MISS SPRN_DEAR
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/* We need _PAGE_PRESENT and _PAGE_ACCESSED set */
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@ -214,7 +222,7 @@ itlb_miss_fault_bolted:
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/* Instruction TLB miss */
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START_EXCEPTION(instruction_tlb_miss_bolted)
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tlb_prolog_bolted SPRN_SRR0
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tlb_prolog_bolted BOOKE_INTERRUPT_ITLB_MISS SPRN_SRR0
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rldicl. r10,r16,64-PGTABLE_EADDR_SIZE,PGTABLE_EADDR_SIZE+4
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srdi r15,r16,60 /* get region */
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