[OpenSPARC-T2-SAM] / hypervisor / src / greatlakes / ontario / src / intr_ontario.s

/*
* ========== Copyright Header Begin ==========================================
*
* Hypervisor Software File: intr_ontario.s
* 
* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
* 
*  - Do no alter or remove copyright notices
* 
*  - Redistribution and use of this software in source and binary forms, with 
*    or without modification, are permitted provided that the following 
*    conditions are met: 
* 
*  - Redistribution of source code must retain the above copyright notice, 
*    this list of conditions and the following disclaimer.
* 
*  - Redistribution in binary form must reproduce the above copyright notice,
*    this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution. 
* 
*    Neither the name of Sun Microsystems, Inc. or the names of contributors 
* may be used to endorse or promote products derived from this software 
* without specific prior written permission. 
* 
*     This software is provided "AS IS," without a warranty of any kind. 
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, 
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A 
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN 
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR 
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR 
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN 
* OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR 
* FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE 
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, 
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF 
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
* 
* You acknowledge that this software is not designed, licensed or
* intended for use in the design, construction, operation or maintenance of
* any nuclear facility. 
* 
* ========== Copyright Header End ============================================
*/
/*
 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

	.ident	"@(#)intr_ontario.s	1.43	07/05/03 SMI"

#include <sys/asm_linkage.h>
#include <sys/htypes.h>
#include <asi.h>
#include <hprivregs.h>
#include <sun4v/asi.h>
#include <offsets.h>
#include <vdev_intr.h>
#include <util.h>
#include <iob.h>

/*
 * cpu_in_error_finish - invoked from a cpu about to enter the error
 * state so another cpu can finish cleaning up.
 */
	ENTRY(cpu_in_error_finish)
	CPU_PUSH(%g7, %g2, %g3, %g4)		! save return address
	STRAND_STRUCT(%g1)

	/*
	 * Send a resumable erpt to the guest.  The fault cpu should have
	 * left a valid erpt in the current cpu's ce err buf.
	 */
	add	%g1, STRAND_CE_RPT, %g2

	! get the error CPUID to do the necessary cleanup
	lduh	[%g2 + STRAND_SUN4V_ERPT + ESUN4V_G_CPUID], %g1

	! get the vcpu and strand for the vcpu that took the error
	GUEST_STRUCT(%g3)
	sllx	%g1, GUEST_VCPUS_SHIFT, %g1
	add	%g1, %g3, %g1
	add	%g1, GUEST_VCPUS, %g1
	ldx	[%g1], %g1			! err vcpu struct
	ldx	[%g1 + CPU_STRAND], %g2		! err strand struct

	! deschedule and stop the vcpu
	! %g1 - vcpu struct
	! %g2 - strand struct
	HVCALL(desched_n_stop_vcpu)

	STRAND_STRUCT(%g1)			! this strand
	add	%g1, STRAND_CE_RPT, %g2
	HVCALL(queue_resumable_erpt)

	/*
	 * If the heartbeat is disabled then it was running on the failed
	 * cpu and needs to be restarted on this cpu.
	 */
	ROOT_STRUCT(%g2)
	ldx	[%g2 + CONFIG_HEARTBEAT_CPU], %g2
	cmp	%g2, -1
	bne,pt	%xcc, 1f
	nop
	HVCALL(heartbeat_enable)
1:
	CPU_POP(%g7, %g1, %g2, %g5)
	retry
	SET_SIZE(cpu_in_error_finish)


/*
 * vdev_mondo - deliver a virtual mondo on the current cpu's
 * devmondo queue.
 *
 * %g1 - cpup
 * %g7 - return address
 * --
 *
 * Note: This function is called from the interrupt handler and also
 *	 as a tail function
 */

	! the mondo starting point.
	! %g1	cpup
	! %g2	intr-type
	ENTRY_NP(vecintr)
	cmp	%g2, VECINTR_XCALL
	beq,pt	%xcc, cpu_mondo
	cmp	%g2, VECINTR_HVXCALL
	beq,pt	%xcc, hvxcall_mondo
	cmp	%g2, VECINTR_DEV
	beq,pt	%xcc, dev_mondo
#ifdef CONFIG_FPGA
	cmp	%g2, VECINTR_FPGA
	beq,pt	%xcc, fpga_intr
#endif
#ifdef T1_FPGA_SNET
	cmp	%g2, VECINTR_SNET
	beq,pt	%xcc, snet_mondo
#endif
	cmp	%g2, VECINTR_VDEV
	bne,pt	%xcc, 1f
	nop

	HVCALL(vdev_mondo)
	retry
1:
	cmp	%g2, VECINTR_ERROR_XCALL
	beq,pt	%xcc, cpu_err_rerouted

	cmp	%g2, VECINTR_SSIERR
	beq,pt	%xcc, ssi_mondo
	cmp	%g2, VECINTR_CPUINERR 
	beq,pt	%xcc, cpu_in_error_finish
	nop

	! XXX unclaimed interrupt
irq_unclaimed:
.vecintr_qfull:			! XXX need to do the right thing here
	retry
	SET_SIZE(vecintr)
Commit	Line	Data
920dae64 AT	1	/*
	2	* ========== Copyright Header Begin ==========================================
	3	*
	4	* Hypervisor Software File: intr_ontario.s
	5	*
	6	* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
	7	*
	8	* - Do no alter or remove copyright notices
	9	*
	10	* - Redistribution and use of this software in source and binary forms, with
	11	* or without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistribution of source code must retain the above copyright notice,
	15	* this list of conditions and the following disclaimer.
	16	*
	17	* - Redistribution in binary form must reproduce the above copyright notice,
	18	* this list of conditions and the following disclaimer in the
	19	* documentation and/or other materials provided with the distribution.
	20	*
	21	* Neither the name of Sun Microsystems, Inc. or the names of contributors
	22	* may be used to endorse or promote products derived from this software
	23	* without specific prior written permission.
	24	*
	25	* This software is provided "AS IS," without a warranty of any kind.
	26	* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
	27	* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
	28	* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
	29	* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
	30	* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
	31	* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN
	32	* OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR
	33	* FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
	34	* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
	35	* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
	36	* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
	37	*
	38	* You acknowledge that this software is not designed, licensed or
	39	* intended for use in the design, construction, operation or maintenance of
	40	* any nuclear facility.
	41	*
	42	* ========== Copyright Header End ============================================
	43	*/
	44	/*
	45	* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
	46	* Use is subject to license terms.
	47	*/
	48
	49	.ident "@(#)intr_ontario.s 1.43 07/05/03 SMI"
	50
	51	#include <sys/asm_linkage.h>
	52	#include <sys/htypes.h>
	53	#include <asi.h>
	54	#include <hprivregs.h>
	55	#include <sun4v/asi.h>
	56	#include <offsets.h>
	57	#include <vdev_intr.h>
	58	#include <util.h>
	59	#include <iob.h>
	60
	61	/*
	62	* cpu_in_error_finish - invoked from a cpu about to enter the error
	63	* state so another cpu can finish cleaning up.
	64	*/
65	ENTRY(cpu_in_error_finish)
66	CPU_PUSH(%g7, %g2, %g3, %g4) ! save return address
67	STRAND_STRUCT(%g1)
68
69	/*
70	* Send a resumable erpt to the guest. The fault cpu should have
71	* left a valid erpt in the current cpu's ce err buf.
72	*/
73	add %g1, STRAND_CE_RPT, %g2
74
75	! get the error CPUID to do the necessary cleanup
76	lduh [%g2 + STRAND_SUN4V_ERPT + ESUN4V_G_CPUID], %g1
77
78	! get the vcpu and strand for the vcpu that took the error
79	GUEST_STRUCT(%g3)
80	sllx %g1, GUEST_VCPUS_SHIFT, %g1
81	add %g1, %g3, %g1
82	add %g1, GUEST_VCPUS, %g1
83	ldx [%g1], %g1 ! err vcpu struct
84	ldx [%g1 + CPU_STRAND], %g2 ! err strand struct
85
86	! deschedule and stop the vcpu
87	! %g1 - vcpu struct
88	! %g2 - strand struct
89	HVCALL(desched_n_stop_vcpu)
90
91	STRAND_STRUCT(%g1) ! this strand
92	add %g1, STRAND_CE_RPT, %g2
93	HVCALL(queue_resumable_erpt)
94
95	/*
96	* If the heartbeat is disabled then it was running on the failed
97	* cpu and needs to be restarted on this cpu.
98	*/
99	ROOT_STRUCT(%g2)
100	ldx [%g2 + CONFIG_HEARTBEAT_CPU], %g2
101	cmp %g2, -1
102	bne,pt %xcc, 1f
103	nop
104	HVCALL(heartbeat_enable)
105	1:
106	CPU_POP(%g7, %g1, %g2, %g5)
107	retry
108	SET_SIZE(cpu_in_error_finish)
109
110
111	/*
112	* vdev_mondo - deliver a virtual mondo on the current cpu's
113	* devmondo queue.
114	*
115	* %g1 - cpup
116	* %g7 - return address
117	* --
118	*
119	* Note: This function is called from the interrupt handler and also
120	* as a tail function
121	*/
122
123	! the mondo starting point.
124	! %g1 cpup
125	! %g2 intr-type
126	ENTRY_NP(vecintr)
127	cmp %g2, VECINTR_XCALL
128	beq,pt %xcc, cpu_mondo
129	cmp %g2, VECINTR_HVXCALL
130	beq,pt %xcc, hvxcall_mondo
131	cmp %g2, VECINTR_DEV
132	beq,pt %xcc, dev_mondo
133	#ifdef CONFIG_FPGA
134	cmp %g2, VECINTR_FPGA
135	beq,pt %xcc, fpga_intr
136	#endif
137	#ifdef T1_FPGA_SNET
138	cmp %g2, VECINTR_SNET
139	beq,pt %xcc, snet_mondo
140	#endif
141	cmp %g2, VECINTR_VDEV
142	bne,pt %xcc, 1f
143	nop
144
145	HVCALL(vdev_mondo)
146	retry
147	1:
148	cmp %g2, VECINTR_ERROR_XCALL
149	beq,pt %xcc, cpu_err_rerouted
150
151	cmp %g2, VECINTR_SSIERR
152	beq,pt %xcc, ssi_mondo
153	cmp %g2, VECINTR_CPUINERR
154	beq,pt %xcc, cpu_in_error_finish
155	nop
156
157	! XXX unclaimed interrupt
158	irq_unclaimed:
159	.vecintr_qfull: ! XXX need to do the right thing here
160	retry
161	SET_SIZE(vecintr)