aboutsummaryrefslogtreecommitdiffstats
path: root/arch/sh/lib64/dbg.c
blob: 6152a6a6d9c6e17309ece74b15dc807c8cd78205 (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
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
/*--------------------------------------------------------------------------
--
-- Identity : Linux50 Debug Funcions
--
-- File     : arch/sh/lib64/dbg.c
--
-- Copyright 2000, 2001 STMicroelectronics Limited.
-- Copyright 2004 Richard Curnow (evt_debug etc)
--
--------------------------------------------------------------------------*/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <asm/mmu_context.h>

typedef u64 regType_t;

static regType_t getConfigReg(u64 id)
{
	register u64 reg __asm__("r2");
	asm volatile ("getcfg   %1, 0, %0":"=r" (reg):"r"(id));
	return (reg);
}

/* ======================================================================= */

static char *szTab[] = { "4k", "64k", "1M", "512M" };
static char *protTab[] = { "----",
	"---R",
	"--X-",
	"--XR",
	"-W--",
	"-W-R",
	"-WX-",
	"-WXR",
	"U---",
	"U--R",
	"U-X-",
	"U-XR",
	"UW--",
	"UW-R",
	"UWX-",
	"UWXR"
};
#define  ITLB_BASE	0x00000000
#define  DTLB_BASE	0x00800000
#define  MAX_TLBs		64
/* PTE High */
#define  GET_VALID(pte)        ((pte) & 0x1)
#define  GET_SHARED(pte)       ((pte) & 0x2)
#define  GET_ASID(pte)         ((pte >> 2) & 0x0ff)
#define  GET_EPN(pte)          ((pte) & 0xfffff000)

/* PTE Low */
#define  GET_CBEHAVIOR(pte)    ((pte) & 0x3)
#define  GET_PAGE_SIZE(pte)    szTab[((pte >> 3) & 0x3)]
#define  GET_PROTECTION(pte)   protTab[((pte >> 6) & 0xf)]
#define  GET_PPN(pte)          ((pte) & 0xfffff000)

#define PAGE_1K_MASK           0x00000000
#define PAGE_4K_MASK           0x00000010
#define PAGE_64K_MASK          0x00000080
#define MMU_PAGESIZE_MASK      (PAGE_64K_MASK | PAGE_4K_MASK)
#define PAGE_1MB_MASK          MMU_PAGESIZE_MASK
#define PAGE_1K                (1024)
#define PAGE_4K                (1024 * 4)
#define PAGE_64K               (1024 * 64)
#define PAGE_1MB               (1024 * 1024)

#define HOW_TO_READ_TLB_CONTENT  \
       "[ ID]  PPN         EPN        ASID  Share  CB  P.Size   PROT.\n"

void print_single_tlb(unsigned long tlb, int single_print)
{
	regType_t pteH;
	regType_t pteL;
	unsigned int valid, shared, asid, epn, cb, ppn;
	char *pSize;
	char *pProt;

	/*
	   ** in case of single print <single_print> is true, this implies:
	   **   1) print the TLB in any case also if NOT VALID
	   **   2) print out the header
	 */

	pteH = getConfigReg(tlb);
	valid = GET_VALID(pteH);
	if (single_print)
		printk(HOW_TO_READ_TLB_CONTENT);
	else if (!valid)
		return;

	pteL = getConfigReg(tlb + 1);

	shared = GET_SHARED(pteH);
	asid = GET_ASID(pteH);
	epn = GET_EPN(pteH);
	cb = GET_CBEHAVIOR(pteL);
	pSize = GET_PAGE_SIZE(pteL);
	pProt = GET_PROTECTION(pteL);
	ppn = GET_PPN(pteL);
	printk("[%c%2ld]  0x%08x  0x%08x  %03d   %02x    %02x   %4s    %s\n",
	       ((valid) ? ' ' : 'u'), ((tlb & 0x0ffff) / TLB_STEP),
	       ppn, epn, asid, shared, cb, pSize, pProt);
}

void print_dtlb(void)
{
	int count;
	unsigned long tlb;

	printk(" ================= SH-5 D-TLBs Status ===================\n");
	printk(HOW_TO_READ_TLB_CONTENT);
	tlb = DTLB_BASE;
	for (count = 0; count < MAX_TLBs; count++, tlb += TLB_STEP)
		print_single_tlb(tlb, 0);
	printk
	    (" =============================================================\n");
}

void print_itlb(void)
{
	int count;
	unsigned long tlb;

	printk(" ================= SH-5 I-TLBs Status ===================\n");
	printk(HOW_TO_READ_TLB_CONTENT);
	tlb = ITLB_BASE;
	for (count = 0; count < MAX_TLBs; count++, tlb += TLB_STEP)
		print_single_tlb(tlb, 0);
	printk
	    (" =============================================================\n");
}

void show_excp_regs(char *from, int trapnr, int signr, struct pt_regs *regs)
{

	unsigned long long ah, al, bh, bl, ch, cl;

	printk("\n");
	printk("EXCEPTION - %s: task %d; Linux trap # %d; signal = %d\n",
	       ((from) ? from : "???"), current->pid, trapnr, signr);

	asm volatile ("getcon   " __EXPEVT ", %0":"=r"(ah));
	asm volatile ("getcon   " __EXPEVT ", %0":"=r"(al));
	ah = (ah) >> 32;
	al = (al) & 0xffffffff;
	asm volatile ("getcon   " __KCR1 ", %0":"=r"(bh));
	asm volatile ("getcon   " __KCR1 ", %0":"=r"(bl));
	bh = (bh) >> 32;
	bl = (bl) & 0xffffffff;
	asm volatile ("getcon   " __INTEVT ", %0":"=r"(ch));
	asm volatile ("getcon   " __INTEVT ", %0":"=r"(cl));
	ch = (ch) >> 32;
	cl = (cl) & 0xffffffff;
	printk("EXPE: %08Lx%08Lx KCR1: %08Lx%08Lx INTE: %08Lx%08Lx\n",
	       ah, al, bh, bl, ch, cl);

	asm volatile ("getcon   " __PEXPEVT ", %0":"=r"(ah));
	asm volatile ("getcon   " __PEXPEVT ", %0":"=r"(al));
	ah = (ah) >> 32;
	al = (al) & 0xffffffff;
	asm volatile ("getcon   " __PSPC ", %0":"=r"(bh));
	asm volatile ("getcon   " __PSPC ", %0":"=r"(bl));
	bh = (bh) >> 32;
	bl = (bl) & 0xffffffff;
	asm volatile ("getcon   " __PSSR ", %0":"=r"(ch));
	asm volatile ("getcon   " __PSSR ", %0":"=r"(cl));
	ch = (ch) >> 32;
	cl = (cl) & 0xffffffff;
	printk("PEXP: %08Lx%08Lx PSPC: %08Lx%08Lx PSSR: %08Lx%08Lx\n",
	       ah, al, bh, bl, ch, cl);

	ah = (regs->pc) >> 32;
	al = (regs->pc) & 0xffffffff;
	bh = (regs->regs[18]) >> 32;
	bl = (regs->regs[18]) & 0xffffffff;
	ch = (regs->regs[15]) >> 32;
	cl = (regs->regs[15]) & 0xffffffff;
	printk("PC  : %08Lx%08Lx LINK: %08Lx%08Lx SP  : %08Lx%08Lx\n",
	       ah, al, bh, bl, ch, cl);

	ah = (regs->sr) >> 32;
	al = (regs->sr) & 0xffffffff;
	asm volatile ("getcon   " __TEA ", %0":"=r"(bh));
	asm volatile ("getcon   " __TEA ", %0":"=r"(bl));
	bh = (bh) >> 32;
	bl = (bl) & 0xffffffff;
	asm volatile ("getcon   " __KCR0 ", %0":"=r"(ch));
	asm volatile ("getcon   " __KCR0 ", %0":"=r"(cl));
	ch = (ch) >> 32;
	cl = (cl) & 0xffffffff;
	printk("SR  : %08Lx%08Lx TEA : %08Lx%08Lx KCR0: %08Lx%08Lx\n",
	       ah, al, bh, bl, ch, cl);

	ah = (regs->regs[0]) >> 32;
	al = (regs->regs[0]) & 0xffffffff;
	bh = (regs->regs[1]) >> 32;
	bl = (regs->regs[1]) & 0xffffffff;
	ch = (regs->regs[2]) >> 32;
	cl = (regs->regs[2]) & 0xffffffff;
	printk("R0  : %08Lx%08Lx R1  : %08Lx%08Lx R2  : %08Lx%08Lx\n",
	       ah, al, bh, bl, ch, cl);

	ah = (regs->regs[3]) >> 32;
	al = (regs->regs[3]) & 0xffffffff;
	bh = (regs->regs[4]) >> 32;
	bl = (regs->regs[4]) & 0xffffffff;
	ch = (regs->regs[5]) >> 32;
	cl = (regs->regs[5]) & 0xffffffff;
	printk("R3  : %08Lx%08Lx R4  : %08Lx%08Lx R5  : %08Lx%08Lx\n",
	       ah, al, bh, bl, ch, cl);

	ah = (regs->regs[6]) >> 32;
	al = (regs->regs[6]) & 0xffffffff;
	bh = (regs->regs[7]) >> 32;
	bl = (regs->regs[7]) & 0xffffffff;
	ch = (regs->regs[8]) >> 32;
	cl = (regs->regs[8]) & 0xffffffff;
	printk("R6  : %08Lx%08Lx R7  : %08Lx%08Lx R8  : %08Lx%08Lx\n",
	       ah, al, bh, bl, ch, cl);

	ah = (regs->regs[9]) >> 32;
	al = (regs->regs[9]) & 0xffffffff;
	bh = (regs->regs[10]) >> 32;
	bl = (regs->regs[10]) & 0xffffffff;
	ch = (regs->regs[11]) >> 32;
	cl = (regs->regs[11]) & 0xffffffff;
	printk("R9  : %08Lx%08Lx R10 : %08Lx%08Lx R11 : %08Lx%08Lx\n",
	       ah, al, bh, bl, ch, cl);
	printk("....\n");

	ah = (regs->tregs[0]) >> 32;
	al = (regs->tregs[0]) & 0xffffffff;
	bh = (regs->tregs[1]) >> 32;
	bl = (regs->tregs[1]) & 0xffffffff;
	ch = (regs->tregs[2]) >> 32;
	cl = (regs->tregs[2]) & 0xffffffff;
	printk("T0  : %08Lx%08Lx T1  : %08Lx%08Lx T2  : %08Lx%08Lx\n",
	       ah, al, bh, bl, ch, cl);
	printk("....\n");

	print_dtlb();
	print_itlb();
}