summaryrefslogtreecommitdiff
path: root/sys/src/9/sgi/dat.h
blob: b0e47a6cb7d9f4d168ad8a277cd57acb08fc183f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
typedef struct Conf	Conf;
typedef struct Confmem	Confmem;
typedef struct FPsave	FPsave;
typedef struct KMap	KMap;
typedef struct Lance	Lance;
typedef struct Lancemem	Lancemem;
typedef struct Label	Label;
typedef struct Lock	Lock;
typedef struct Mach	Mach;
typedef struct MMU	MMU;
typedef struct Notsave	Notsave;
typedef struct PMMU	PMMU;
typedef struct Softtlb	Softtlb;
typedef struct Ureg	Ureg;
typedef struct Proc	Proc;
typedef uvlong		Tval;

#define MAXSYSARG	5	/* for mount(fd, afd, mpt, flag, arg) */

/*
 *  parameters for sysproc.c and rebootcmd.c
 */
#define AOUT_MAGIC	V_MAGIC || magic==M_MAGIC
/* r3k or r4k boot images */
#define BOOT_MAGIC	(0x160<<16) || magic == ((0x160<<16)|3)

/*
 *  machine dependent definitions used by ../port/dat.h
 */

struct Lock
{
	ulong	key;			/* semaphore (non-zero = locked) */
	ulong	sr;
	ulong	pc;
	Proc	*p;
	Mach	*m;
	ushort	isilock;
};

struct Label
{
	uintptr	sp;
	uintptr	pc;
};

struct Confmem
{
	ulong	base;
	ulong	npage;
	ulong	kbase;
	ulong	klimit;
};

struct Conf
{
	ulong	nmach;		/* processors */
	ulong	nproc;		/* processes */
	Confmem	mem[4];
	ulong	npage;		/* total physical pages of memory */
	ulong	upages;		/* user page pool */
	ulong	nimage;		/* number of page cache image headers */
	ulong	nswap;		/* number of swap pages */
	int	nswppo;		/* max # of pageouts per segment pass */
	ulong	copymode;	/* 0 is copy on write, 1 is copy on reference */
	ulong	ialloc;		/* bytes available for interrupt-time allocation */
	ulong	pipeqsize;	/* size in bytes of pipe queues */
	int	nuart;		/* number of uart devices */
	int	monitor;
	int	keyboard;
};

/*
 * floating point registers
 */
enum
{
	/* floating point state */
	FPinit,
	FPactive,
	FPinactive,
	FPemu,

	/* bit meaning floating point illegal */
	FPillegal= 0x100,
};

enum {
	Nfpregs		= 32,		/* floats; half as many doubles */
};

/*
 * emulated floating point (mips32r2 with ieee fp regs)
 * fpstate is separate, kept in Proc
 */
struct FPsave
{
	/* /dev/proc expects the registers to be first in FPsave */
	ulong	reg[Nfpregs];		/* the canonical bits */
	union {
		ulong	fpstatus;	/* both are fcr31 */
		ulong	fpcontrol;
	};

	int	fpdelayexec;		/* executing delay slot of branch */
	uintptr	fpdelaypc;		/* pc to resume at after */
	ulong	fpdelaysts;	/* save across user-mode delay-slot execution */

	/* stuck-fault detection */
	uintptr	fppc;			/* addr of last fault */
	int	fpcnt;			/* how many consecutive at that addr */
};

/*
 *  mmu goo in the Proc structure
 */
struct PMMU
{
	int	pidonmach[MAXMACH];
};

/*
 *  things saved in the Proc structure during a notify
 */
struct Notsave
{
	ulong	nonempty;
};

#include "../port/portdat.h"

struct Mach
{
	/* the following are all known by l.s and cannot be moved */
	int	machno;			/* physical id of processor */
	Softtlb*stb;
	Proc*	proc;			/* process on this processor */
	ulong	splpc;			/* pc that called splhi() */
	ulong	tlbfault;

	/* the following is safe to move */
	ulong	tlbpurge;
	ulong	ticks;			/* of the clock since boot time */
	Label	sched;			/* scheduler wakeup */
	void*	alarm;			/* alarms bound to this clock */
	int	lastpid;		/* last pid allocated on this machine */
	Proc*	pidproc[NTLBPID];	/* proc that owns tlbpid on this mach */
	KMap*	kactive;		/* active on this machine */
	int	knext;
	uchar	ktlbx[NTLB];		/* tlb index used for kmap */
	uchar	ktlbnext;
	int	speed;			/* cpu speed */
	ulong	delayloop;		/* for the delay() routine */
	ulong	fairness;		/* for runproc */
	int	flushmmu;
	int	inclockintr;
	int	ilockdepth;
	Perf	perf;			/* performance counters */
	uvlong	cyclefreq;		/* Frequency of user readable cycle counter */

	/* for per-processor timers */
	ulong	lastcount;
	uvlong	fastticks;
	ulong	hz;
	ulong	maxperiod;
	ulong	minperiod;

	Proc*	readied;		/* for runproc */
	ulong	schedticks;		/* next forced context switch */

	int	pfault;
	int	cs;
	int	syscall;
	int	load;
	int	intr;
	int	hashcoll;		/* soft-tlb hash collisions */
	int	paststartup;		/* for putktlb */

	int	stack[1];
};

struct KMap
{
	Ref;
	ulong	virt;
	ulong	phys0;
	ulong	phys1;
	KMap*	next;
	KMap*	konmach[MAXMACH];
	Page*	pg;
	ulong	pc;			/* of caller to kmap() */
};

#define	VA(k)		((k)->virt)
#define PPN(x)		((ulong)(x)>>6)

struct Softtlb
{
	ulong	virt;
	ulong	phys0;
	ulong	phys1;
};

struct
{
	Lock;
	long	machs;		/* bitmap of processors */
	short	exiting;
	int	ispanic;
}active;

extern register Mach	*m;
extern register Proc	*up;