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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include "assym.h"
#include <sys/asm_linkage.h>
#include <sys/privregs.h>
#include <sys/x_call.h>
#include <sys/xc_impl.h>
#include <sys/machthread.h>
#include <sys/hypervisor_api.h>
#ifdef TRAPTRACE
#include <sys/traptrace.h>
#endif /* TRAPTRACE */
/*
* Entered by the software trap (TT=ST_SELFXCALL, TL>0) thru send_self_xcall().
* Emulate the mondo handler - vec_interrupt().
*
* Global registers are the Alternate Globals.
* Arguments:
* %o0 - CPU
* ILP32 kernel:
* %o5 - function to call
* %o1, %o2, %o3, %o4 - arguments
* LP64 kernel:
* %o3 - function to call
* %o1, %o2 - arguments
*/
ENTRY_NP(self_xcall)
!
! TL>0 handlers are expected to do "retry"
! prepare their return PC and nPC now
!
rdpr %tnpc, %g1
wrpr %g1, %tpc ! PC <- TNPC[TL]
add %g1, 4, %g1
wrpr %g1, %tnpc ! nPC <- TNPC[TL] + 4
#ifdef TRAPTRACE
TRACE_PTR(%g4, %g6)
GET_TRACE_TICK(%g6, %g3)
stxa %g6, [%g4 + TRAP_ENT_TICK]%asi
rdpr %tl, %g6
stha %g6, [%g4 + TRAP_ENT_TL]%asi
rdpr %tt, %g6
stha %g6, [%g4 + TRAP_ENT_TT]%asi
stna %o3, [%g4 + TRAP_ENT_TR]%asi ! pc of the TL>0 handler
rdpr %tpc, %g6
stna %g6, [%g4 + TRAP_ENT_TPC]%asi
rdpr %tstate, %g6
stxa %g6, [%g4 + TRAP_ENT_TSTATE]%asi
stna %sp, [%g4 + TRAP_ENT_SP]%asi
stna %o1, [%g4 + TRAP_ENT_F1]%asi ! arg 1
stna %o2, [%g4 + TRAP_ENT_F2]%asi ! arg 2
stna %g0, [%g4 + TRAP_ENT_F3]%asi
stna %g0, [%g4 + TRAP_ENT_F4]%asi
TRACE_NEXT(%g4, %g6, %g3)
#endif /* TRAPTRACE */
!
! Load the arguments for the fast trap handler.
!
mov %o1, %g1
jmp %o3 ! call the fast trap handler
mov %o2, %g2
/* Not Reached */
SET_SIZE(self_xcall)
#ifdef TRAPTRACE
ENTRY(xc_trace)
rdpr %pstate, %g1
andn %g1, PSTATE_IE | PSTATE_AM, %g2
wrpr %g0, %g2, %pstate /* disable interrupts */
TRACE_PTR(%g3, %g4)
GET_TRACE_TICK(%g6, %g4)
stxa %g6, [%g3 + TRAP_ENT_TICK]%asi
stha %g0, [%g3 + TRAP_ENT_TL]%asi
set TT_XCALL, %g2
or %o0, %g2, %g4
stha %g4, [%g3 + TRAP_ENT_TT]%asi
stna %o7, [%g3 + TRAP_ENT_TPC]%asi
ldn [%o1], %g2
stna %g2, [%g3 + TRAP_ENT_SP]%asi /* sp = cpuset */
stna %o2, [%g3 + TRAP_ENT_TR]%asi /* tr = func */
stna %o3, [%g3 + TRAP_ENT_F1]%asi /* f1 = arg1 */
stna %o4, [%g3 + TRAP_ENT_F2]%asi /* f2 = arg2 */
stna %g0, [%g3 + TRAP_ENT_F3]%asi /* f3 = 0 */
stna %i7, [%g3 + TRAP_ENT_F4]%asi /* f4 = xcall caller */
stxa %g1, [%g3 + TRAP_ENT_TSTATE]%asi /* tstate = pstate */
TRACE_NEXT(%g2, %g3, %g4)
/*
* In the case of a cpuset of greater size than a long we
* grab extra trace buffers just to store the cpuset.
* Seems like a waste but popular opinion opted for this
* rather than increase the size of the buffer.
*/
#if CPUSET_SIZE > CLONGSIZE
add %o1, CPUSET_SIZE, %g5 /* end of cpuset */
clr %o2
1:
TRACE_PTR(%g3, %g4)
stha %g0, [%g3 + TRAP_ENT_TL]%asi
set TT_XCALL_CONT, %g2
or %g2, %o2, %g2 /* continuation # */
stha %g2, [%g3 + TRAP_ENT_TT]%asi
stxa %g6, [%g3 + TRAP_ENT_TICK]%asi /* same tick */
stna %g0, [%g3 + TRAP_ENT_TPC]%asi /* clr unused fields */
stna %g0, [%g3 + TRAP_ENT_SP]%asi
stna %g0, [%g3 + TRAP_ENT_TR]%asi
stxa %g0, [%g3 + TRAP_ENT_TSTATE]%asi
stna %g0, [%g3 + TRAP_ENT_F2]%asi
stna %g0, [%g3 + TRAP_ENT_F3]%asi
stna %g0, [%g3 + TRAP_ENT_F4]%asi
ldn [%o1], %g2
stna %g2, [%g3 + TRAP_ENT_F1]%asi
add %o1, CLONGSIZE, %o1
cmp %o1, %g5
bge 2f
ldn [%o1], %g2
stna %g2, [%g3 + TRAP_ENT_F2]%asi
add %o1, CLONGSIZE, %o1
cmp %o1, %g5
bge 2f
ldn [%o1], %g2
stna %g2, [%g3 + TRAP_ENT_F3]%asi
add %o1, CLONGSIZE, %o1
cmp %o1, %g5
bge 2f
ldn [%o1], %g2
stna %g2, [%g3 + TRAP_ENT_F4]%asi
add %o1, CLONGSIZE, %o1
2:
TRACE_NEXT(%g2, %g3, %g4)
cmp %o1, %g5
bl 1b
inc %o2
#endif /* CPUSET_SIZE */
retl
wrpr %g0, %g1, %pstate /* enable interrupts */
SET_SIZE(xc_trace)
#endif /* TRAPTRACE */
/*
* Setup interrupt dispatch data registers
* Entry:
* %o0 - function or inumber to call
* %o1, %o2 - arguments (2 uint64_t's)
*/
ENTRY(init_mondo)
ALTENTRY(init_mondo_nocheck)
CPU_ADDR(%g1, %g4) ! load CPU struct addr
add %g1, CPU_MCPU, %g1
ldx [%g1 + MCPU_MONDO_DATA], %g1
stx %o0, [%g1]
stx %o1, [%g1+8]
stx %o2, [%g1+0x10]
stx %g0, [%g1+0x18]
stx %g0, [%g1+0x20]
stx %g0, [%g1+0x28]
stx %g0, [%g1+0x30]
stx %g0, [%g1+0x38]
retl
membar #Sync ! allowed to be in the delay slot
SET_SIZE(init_mondo)
/*
* Ship mondo to cpuid
*/
ENTRY_NP(shipit)
/* For now use dummy interface: cpu# func arg1 arg2 */
CPU_ADDR(%g1, %g4)
add %g1, CPU_MCPU, %g1
ldx [%g1 + MCPU_MONDO_DATA_RA], %o2
mov HV_INTR_SEND, %o5
ta FAST_TRAP
retl
membar #Sync
SET_SIZE(shipit)
/*
* Get cpu structure
* Entry:
* %o0 - register for CPU_ADDR macro
* %o1 - scratch for CPU_ADDR macro
*/
ENTRY(get_cpuaddr)
CPU_ADDR(%o0, %o1) ! %o0 == CPU struct addr
retl
nop
SET_SIZE(get_cpuaddr)
/*
* This is to ensure that previously called xtrap handlers have executed on
* sun4v. We zero out the byte corresponding to its cpuid in the
* array passed to us from xt_sync(), so the sender knows the previous
* mondo has been executed.
* Register:
* %g1 - Addr of the cpu_sync array.
*/
ENTRY_NP(xt_sync_tl1)
CPU_INDEX(%g3, %g4) /* %g3 = cpu id */
stb %g0, [%g1 + %g3]
retry
SET_SIZE(xt_sync_tl1)
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