[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>
#include <ppc/POWERMAC/video_console.h>

extern struct vc_info vinfo;

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;
	unsigned int tstrt, tend;

	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... */

/*
 *		Force cache flush
 */
		case dgflush:
		
#if 1
			cacheInit();							/* Blow cache */
#else
			asm volatile("	mftb %0" : "=r" (tstrt));
			tend = tstrt;			
			while((tend - tstrt) < 0x000A2837) {
				asm volatile("	mftb %0" : "=r" (tend));
			}

#endif
			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... */
			
		
/*
 *		Create a physical block map into the current task
 *		Don't bother to check for any errors.
 *		parms - vaddr, paddr, size, prot, attributes
 */
		case dgBMphys:
		
			pmap_map_block(current_act()->map->pmap, save->save_r4, save->save_r5, save->save_r6,	/* Map in the block */
				save->save_r7, save->save_r8, 0);

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

/*
 *		Remove any mapping from the current task
 *		Don't bother to check for any errors.
 *		parms - vaddr
 */
		case dgUnMap:
		
			(void)mapping_remove(current_act()->map->pmap, save->save_r4);	/* Remove mapping */
			return 1;								/* Return and check for ASTs... */
			
/*
 *		Return info for boot screen
 */
		case dgBootScreen:
			
#if 0
			ml_set_interrupts_enabled(1);
			(void)copyout((char *)&vinfo, (char *)save->save_r4, sizeof(struct vc_info));	/* Copy out the video info */
			ml_set_interrupts_enabled(0);
#endif
			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>
0b4e3aa0 A	62	#include <ppc/POWERMAC/video_console.h>
	63
	64	extern struct vc_info vinfo;
1c79356b A	65
	66	int diagCall(struct savearea *save) {
	67
	68	union {
	69	unsigned long long tbase;
	70	unsigned int tb[2];
	71	} ttt, adj;
	72	natural_t tbu, tbu2, tbl;
	73	struct per_proc_info per_proc; / Area for my per_proc address */
	74	int cpu;
0b4e3aa0	75	unsigned int tstrt, tend;
1c79356b A	76
	77	if(!(dgWork.dgFlags & enaDiagSCs)) return 0; /* If not enabled, cause an exception */
	78
	79	switch(save->save_r3) { /* Select the routine */
	80
	81	/*
	82	* Adjust the timebase for drift recovery testing
	83	*/
	84	case dgAdjTB: /* Adjust the timebase */
	85
	86	adj.tb[0] = 0; /* Clear high part */
	87	adj.tb[1] = save->save_r4; /* Set low order */
	88	if(adj.tb[1] & 0x80000000) adj.tb[0] = 0xFFFFFFFF; /* Propagate sign bit */
	89
	90	do { /* Read current time */
	91	asm volatile(" mftbu %0" : "=r" (tbu));
	92	asm volatile(" mftb %0" : "=r" (tbl));
	93	asm volatile(" mftbu %0" : "=r" (tbu2));
	94	} while (tbu != tbu2);
	95
	96	ttt.tb[0] = tbu; /* Set high */
	97	ttt.tb[1] = tbl; /* Set low */
	98
	99	ttt.tbase = ttt.tbase + adj.tbase; /* Increment or decrement the TB */
	100
	101	tbu = ttt.tb[0]; /* Save in regular variable */
	102	tbl = ttt.tb[1]; /* Save in regular variable */
	103
	104	mttb(0); /* Set low to keep from ticking */
	105	mttbu(tbu); /* Set adjusted high */
	106	mttb(tbl); /* Set adjusted low */
	107
	108	return -1; /* Return no AST checking... */
	109
	110	/*
	111	* Return physical address of a page
	112	*/
	113	case dgLRA:
	114
	115	save->save_r3 = pmap_extract(current_act()->map->pmap, save->save_r4); /* Get read address */
	116
	117	return -1; /* Return no AST checking... */
	118
	119	/*
	120	* Copy physical to virtual
	121	*/
	122	case dgpcpy:
	123
	124	#if 0
	125	save->save_r3 = copyp2v(save->save_r4, save->save_r5, save->save_r6); /* Copy the physical page */
	126	#endif
	127	return 1; /* Return and check for ASTs... */
	128
	129
	130	/*
	131	* Soft reset processor
	132	*/
	133	case dgreset:
	134
	135	cpu = save->save_r4; /* Get the requested CPU number */
	136
	137	if(cpu >= NCPUS) { /* Check for bogus cpu */
	138	save->save_r3 = KERN_FAILURE; /* Set failure */
	139	return 1;
140	}
141
142	if(!machine_slot[cpu].running) return KERN_FAILURE; /* It is not running */
143
144	per_proc = &per_proc_info[cpu]; /* Point to the processor */
145
146	(void)PE_cpu_start(per_proc->cpu_id,
147	per_proc->start_paddr, (vm_offset_t)per_proc);
148
149	save->save_r3 = KERN_SUCCESS; /* Set scuuess */
150
151	return 1; /* Return and check for ASTs... */
152
0b4e3aa0 A	153	/*
	154	* Force cache flush
	155	*/
	156	case dgflush:
	157
	158	#if 1
	159	cacheInit(); /* Blow cache */
	160	#else
	161	asm volatile(" mftb %0" : "=r" (tstrt));
	162	tend = tstrt;
	163	while((tend - tstrt) < 0x000A2837) {
	164	asm volatile(" mftb %0" : "=r" (tend));
	165	}
	166
	167	#endif
	168	return 1; /* Return and check for ASTs... */
	169
1c79356b A	170	/*
	171	* various hack tests
	172	*/
	173	case dgtest:
	174
	175	pmap_remove(kernel_pmap, save->save_r4, save->save_r4 + 4096);
	176
	177	return 1; /* Return and check for ASTs... */
	178
	179
0b4e3aa0 A	180
	181	/*
	182	* Create a physical block map into the current task
	183	* Don't bother to check for any errors.
	184	* parms - vaddr, paddr, size, prot, attributes
	185	*/
	186	case dgBMphys:
	187
	188	pmap_map_block(current_act()->map->pmap, save->save_r4, save->save_r5, save->save_r6, /* Map in the block */
	189	save->save_r7, save->save_r8, 0);
	190
	191	return 1; /* Return and check for ASTs... */
	192
	193
	194	/*
	195	* Remove any mapping from the current task
	196	* Don't bother to check for any errors.
	197	* parms - vaddr
	198	*/
	199	case dgUnMap:
	200
	201	(void)mapping_remove(current_act()->map->pmap, save->save_r4); /* Remove mapping */
	202	return 1; /* Return and check for ASTs... */
	203
	204	/*
	205	* Return info for boot screen
	206	*/
	207	case dgBootScreen:
	208
	209	#if 0
	210	ml_set_interrupts_enabled(1);
	211	(void)copyout((char )&vinfo, (char )save->save_r4, sizeof(struct vc_info)); /* Copy out the video info */
	212	ml_set_interrupts_enabled(0);
	213	#endif
	214	return 1; /* Return and check for ASTs... */
	215
	216
1c79356b A	217	default: /* Handle invalid ones */
	218	return 0; /* Return an exception */
	219
	220	};
	221
	222	}