[apple/xnu.git] / osfmk / ppc / Diagnostics.c

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * @OSF_FREE_COPYRIGHT@
 */
/*
 * @APPLE_FREE_COPYRIGHT@
 */

/*
 *	Author: Bill Angell, Apple
 *	Date:	9/auht-aught
 *
 * Random diagnostics
 */


#include <kern/machine.h>
#include <kern/processor.h>
#include <mach/machine.h>
#include <mach/processor_info.h>
#include <mach/mach_types.h>
#include <mach/boolean.h>
#include <kern/thread.h>
#include <kern/task.h>
#include <mach/vm_param.h>
#include <vm/vm_kern.h>
#include <vm/vm_map.h>
#include <vm/vm_page.h>
#include <vm/pmap.h>
#include <ppc/exception.h>
#include <ppc/Firmware.h>
#include <ppc/low_trace.h>
#include <ppc/db_low_trace.h>
#include <ppc/mappings.h>
#include <ppc/pmap.h>
#include <ppc/mem.h>
#include <ppc/pmap_internals.h>
#include <ppc/savearea.h>
#include <ppc/Diagnostics.h>
#include <ppc/machine_cpu.h>
#include <pexpert/pexpert.h>

int diagCall(struct savearea *save) {

	union {
		unsigned long long tbase;
		unsigned int tb[2];
	} ttt, adj;
	natural_t tbu, tbu2, tbl;
	struct per_proc_info *per_proc;					/* Area for my per_proc address */
	int cpu;

	if(!(dgWork.dgFlags & enaDiagSCs)) return 0;	/* If not enabled, cause an exception */

	switch(save->save_r3) {							/* Select the routine */
	
/*
 *		Adjust the timebase for drift recovery testing
 */
		case dgAdjTB:								/* Adjust the timebase */

			adj.tb[0] = 0;							/* Clear high part */
			adj.tb[1] = save->save_r4;				/* Set low order */
			if(adj.tb[1] & 0x80000000) adj.tb[0] = 0xFFFFFFFF;	/* Propagate sign bit */
						
			do {									/* Read current time */
				asm volatile("	mftbu %0" : "=r" (tbu));
				asm volatile("	mftb %0" : "=r" (tbl));
				asm volatile("	mftbu %0" : "=r" (tbu2));
			} while (tbu != tbu2);
			
			ttt.tb[0] = tbu;						/* Set high */
			ttt.tb[1] = tbl;						/* Set low */
			
			ttt.tbase = ttt.tbase + adj.tbase;		/* Increment or decrement the TB */
			
			tbu = ttt.tb[0];						/* Save in regular variable */
			tbl = ttt.tb[1];						/* Save in regular variable */

			mttb(0);								/* Set low to keep from ticking */
			mttbu(tbu);								/* Set adjusted high */
			mttb(tbl);								/* Set adjusted low */
			
			return -1;								/* Return no AST checking... */
			
/*
 *		Return physical address of a page
 */
		case dgLRA:
		
			save->save_r3 = pmap_extract(current_act()->map->pmap, save->save_r4);	/* Get read address */
			
			return -1;								/* Return no AST checking... */
			
/*
 *		Copy physical to virtual
 */
		case dgpcpy:
		
#if 0
			save->save_r3 = copyp2v(save->save_r4, save->save_r5, save->save_r6);	/* Copy the physical page */
#endif			
			return 1;								/* Return and check for ASTs... */
			
			
/*
 *		Soft reset processor
 */
		case dgreset:
		
			cpu = save->save_r4;					/* Get the requested CPU number */
			
			if(cpu >= NCPUS) {						/* Check for bogus cpu */
				save->save_r3 = KERN_FAILURE;		/* Set failure */
				return 1;
			}
		
			if(!machine_slot[cpu].running) return KERN_FAILURE;	/* It is not running */	

			per_proc = &per_proc_info[cpu];			/* Point to the processor */
			
			(void)PE_cpu_start(per_proc->cpu_id, 
						per_proc->start_paddr, (vm_offset_t)per_proc);
			
			save->save_r3 = KERN_SUCCESS;			/* Set scuuess */

			return 1;								/* Return and check for ASTs... */

/*
 *		various hack tests
 */
		case dgtest:
		
			pmap_remove(kernel_pmap, save->save_r4, save->save_r4 + 4096);

			return 1;								/* Return and check for ASTs... */
			
		
		default:									/* Handle invalid ones */
			return 0;								/* Return an exception */
		
	};

}
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
	11	*
	12	* This Original Code and all software distributed under the License are
	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/*
	23	* @OSF_FREE_COPYRIGHT@
	24	*/
	25	/*
	26	* @APPLE_FREE_COPYRIGHT@
	27	*/
	28
	29	/*
	30	* Author: Bill Angell, Apple
	31	* Date: 9/auht-aught
	32	*
	33	* Random diagnostics
	34	*/
	35
	36
	37	#include <kern/machine.h>
	38	#include <kern/processor.h>
	39	#include <mach/machine.h>
	40	#include <mach/processor_info.h>
	41	#include <mach/mach_types.h>
	42	#include <mach/boolean.h>
	43	#include <kern/thread.h>
	44	#include <kern/task.h>
	45	#include <mach/vm_param.h>
	46	#include <vm/vm_kern.h>
	47	#include <vm/vm_map.h>
	48	#include <vm/vm_page.h>
	49	#include <vm/pmap.h>
	50	#include <ppc/exception.h>
	51	#include <ppc/Firmware.h>
	52	#include <ppc/low_trace.h>
	53	#include <ppc/db_low_trace.h>
	54	#include <ppc/mappings.h>
	55	#include <ppc/pmap.h>
	56	#include <ppc/mem.h>
	57	#include <ppc/pmap_internals.h>
	58	#include <ppc/savearea.h>
	59	#include <ppc/Diagnostics.h>
	60	#include <ppc/machine_cpu.h>
	61	#include <pexpert/pexpert.h>
	62
	63	int diagCall(struct savearea *save) {
	64
65	union {
66	unsigned long long tbase;
67	unsigned int tb[2];
68	} ttt, adj;
69	natural_t tbu, tbu2, tbl;
70	struct per_proc_info per_proc; / Area for my per_proc address */
71	int cpu;
72
73	if(!(dgWork.dgFlags & enaDiagSCs)) return 0; /* If not enabled, cause an exception */
74
75	switch(save->save_r3) { /* Select the routine */
76
77	/*
78	* Adjust the timebase for drift recovery testing
79	*/
80	case dgAdjTB: /* Adjust the timebase */
81
82	adj.tb[0] = 0; /* Clear high part */
83	adj.tb[1] = save->save_r4; /* Set low order */
84	if(adj.tb[1] & 0x80000000) adj.tb[0] = 0xFFFFFFFF; /* Propagate sign bit */
85
86	do { /* Read current time */
87	asm volatile(" mftbu %0" : "=r" (tbu));
88	asm volatile(" mftb %0" : "=r" (tbl));
89	asm volatile(" mftbu %0" : "=r" (tbu2));
90	} while (tbu != tbu2);
91
92	ttt.tb[0] = tbu; /* Set high */
93	ttt.tb[1] = tbl; /* Set low */
94
95	ttt.tbase = ttt.tbase + adj.tbase; /* Increment or decrement the TB */
96
97	tbu = ttt.tb[0]; /* Save in regular variable */
98	tbl = ttt.tb[1]; /* Save in regular variable */
99
100	mttb(0); /* Set low to keep from ticking */
101	mttbu(tbu); /* Set adjusted high */
102	mttb(tbl); /* Set adjusted low */
103
104	return -1; /* Return no AST checking... */
105
106	/*
107	* Return physical address of a page
108	*/
109	case dgLRA:
110
111	save->save_r3 = pmap_extract(current_act()->map->pmap, save->save_r4); /* Get read address */
112
113	return -1; /* Return no AST checking... */
114
115	/*
116	* Copy physical to virtual
117	*/
118	case dgpcpy:
119
120	#if 0
121	save->save_r3 = copyp2v(save->save_r4, save->save_r5, save->save_r6); /* Copy the physical page */
122	#endif
123	return 1; /* Return and check for ASTs... */
124
125
126	/*
127	* Soft reset processor
128	*/
129	case dgreset:
130
131	cpu = save->save_r4; /* Get the requested CPU number */
132
133	if(cpu >= NCPUS) { /* Check for bogus cpu */
134	save->save_r3 = KERN_FAILURE; /* Set failure */
135	return 1;
136	}
137
138	if(!machine_slot[cpu].running) return KERN_FAILURE; /* It is not running */
139
140	per_proc = &per_proc_info[cpu]; /* Point to the processor */
141
142	(void)PE_cpu_start(per_proc->cpu_id,
143	per_proc->start_paddr, (vm_offset_t)per_proc);
144
145	save->save_r3 = KERN_SUCCESS; /* Set scuuess */
146
147	return 1; /* Return and check for ASTs... */
148
149	/*
150	* various hack tests
151	*/
152	case dgtest:
153
154	pmap_remove(kernel_pmap, save->save_r4, save->save_r4 + 4096);
155
156	return 1; /* Return and check for ASTs... */
157
158
159	default: /* Handle invalid ones */
160	return 0; /* Return an exception */
161
162	};
163
164	}