1 |
/* |
/* |
2 |
* Copyright (C) 2006 Anders Gavare. All rights reserved. |
* Copyright (C) 2006-2007 Anders Gavare. All rights reserved. |
3 |
* |
* |
4 |
* Redistribution and use in source and binary forms, with or without |
* Redistribution and use in source and binary forms, with or without |
5 |
* modification, are permitted provided that the following conditions are met: |
* modification, are permitted provided that the following conditions are met: |
25 |
* SUCH DAMAGE. |
* SUCH DAMAGE. |
26 |
* |
* |
27 |
* |
* |
28 |
* $Id: dev_sh4.c,v 1.21 2006/11/02 05:43:44 debug Exp $ |
* $Id: dev_sh4.c,v 1.32 2007/03/16 18:47:26 debug Exp $ |
29 |
* |
* |
30 |
* SH4 processor specific memory mapped registers (0xf0000000 - 0xffffffff). |
* SH4 processor specific memory mapped registers (0xf0000000 - 0xffffffff). |
31 |
|
* |
32 |
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* TODO: Lots and lots of stuff. |
33 |
*/ |
*/ |
34 |
|
|
35 |
#include <stdio.h> |
#include <stdio.h> |
40 |
#include "cpu.h" |
#include "cpu.h" |
41 |
#include "device.h" |
#include "device.h" |
42 |
#include "devices.h" |
#include "devices.h" |
43 |
|
#include "interrupt.h" |
44 |
#include "machine.h" |
#include "machine.h" |
45 |
#include "memory.h" |
#include "memory.h" |
46 |
#include "misc.h" |
#include "misc.h" |
48 |
|
|
49 |
#include "sh4_bscreg.h" |
#include "sh4_bscreg.h" |
50 |
#include "sh4_cache.h" |
#include "sh4_cache.h" |
51 |
|
#include "sh4_dmacreg.h" |
52 |
#include "sh4_exception.h" |
#include "sh4_exception.h" |
53 |
#include "sh4_intcreg.h" |
#include "sh4_intcreg.h" |
54 |
#include "sh4_mmu.h" |
#include "sh4_mmu.h" |
55 |
|
#include "sh4_rtcreg.h" |
56 |
#include "sh4_scifreg.h" |
#include "sh4_scifreg.h" |
57 |
#include "sh4_tmureg.h" |
#include "sh4_tmureg.h" |
58 |
|
|
61 |
#define SH4_TICK_SHIFT 14 |
#define SH4_TICK_SHIFT 14 |
62 |
#define N_SH4_TIMERS 3 |
#define N_SH4_TIMERS 3 |
63 |
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|
64 |
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/* General-purpose I/O stuff: */ |
65 |
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#define SH4_PCTRA 0xff80002c |
66 |
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#define SH4_PDTRA 0xff800030 |
67 |
|
#define SH4_PCTRB 0xff800040 |
68 |
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#define SH4_PDTRB 0xff800044 |
69 |
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#define SH4_GPIOIC 0xff800048 |
70 |
|
|
71 |
|
#ifdef UNSTABLE_DEVEL |
72 |
|
#define SH4_DEGUG |
73 |
/* #define debug fatal */ |
/* #define debug fatal */ |
74 |
|
#endif |
75 |
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|
76 |
struct sh4_data { |
struct sh4_data { |
77 |
|
/* SCIF (Serial controller): */ |
78 |
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uint16_t scif_smr; |
79 |
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uint8_t scif_brr; |
80 |
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uint16_t scif_scr; |
81 |
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uint16_t scif_ssr; |
82 |
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uint16_t scif_fcr; |
83 |
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int scif_delayed_tx; |
84 |
int scif_console_handle; |
int scif_console_handle; |
85 |
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struct interrupt scif_tx_irq; |
86 |
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struct interrupt scif_rx_irq; |
87 |
|
|
88 |
/* Bus State Controller: */ |
/* Bus State Controller: */ |
89 |
uint32_t unknown_2c; |
uint32_t bsc_bcr1; |
90 |
uint32_t unknown_30; |
uint16_t bsc_bcr2; |
91 |
|
uint32_t bsc_wcr1; |
92 |
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uint32_t bsc_wcr2; |
93 |
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uint32_t bsc_mcr; |
94 |
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uint16_t bsc_rtcsr; |
95 |
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uint16_t bsc_rtcor; |
96 |
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uint16_t bsc_rfcr; |
97 |
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|
98 |
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/* GPIO: */ |
99 |
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uint32_t pctra; /* Port Control Register A */ |
100 |
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uint32_t pdtra; /* Port Data Register A */ |
101 |
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uint32_t pctrb; /* Port Control Register B */ |
102 |
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uint32_t pdtrb; /* Port Data Register B */ |
103 |
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|
104 |
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/* SD-RAM: */ |
105 |
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uint16_t sdmr2; |
106 |
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uint16_t sdmr3; |
107 |
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|
108 |
/* Timer Management Unit: */ |
/* Timer Management Unit: */ |
109 |
struct timer *sh4_timer; |
struct timer *sh4_timer; |
110 |
|
struct interrupt timer_irq[4]; |
111 |
uint32_t tocr; |
uint32_t tocr; |
112 |
uint32_t tstr; |
uint32_t tstr; |
113 |
uint32_t tcnt[N_SH4_TIMERS]; |
uint32_t tcnt[N_SH4_TIMERS]; |
115 |
uint32_t tcr[N_SH4_TIMERS]; |
uint32_t tcr[N_SH4_TIMERS]; |
116 |
int timer_interrupts_pending[N_SH4_TIMERS]; |
int timer_interrupts_pending[N_SH4_TIMERS]; |
117 |
double timer_hz[N_SH4_TIMERS]; |
double timer_hz[N_SH4_TIMERS]; |
118 |
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|
119 |
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/* RTC: */ |
120 |
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uint32_t rtc_reg[14]; /* Excluding rcr1 and 2 */ |
121 |
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uint8_t rtc_rcr1; |
122 |
}; |
}; |
123 |
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|
124 |
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|
131 |
* This function is called SH4_PSEUDO_TIMER_HZ times per real-world second. |
* This function is called SH4_PSEUDO_TIMER_HZ times per real-world second. |
132 |
* Its job is to update the SH4 timer counters, and if necessary, increase |
* Its job is to update the SH4 timer counters, and if necessary, increase |
133 |
* the number of pending interrupts. |
* the number of pending interrupts. |
134 |
|
* |
135 |
|
* Also, RAM Refresh is also faked here. |
136 |
*/ |
*/ |
137 |
static void sh4_timer_tick(struct timer *t, void *extra) |
static void sh4_timer_tick(struct timer *t, void *extra) |
138 |
{ |
{ |
139 |
struct sh4_data *d = (struct sh4_data *) extra; |
struct sh4_data *d = (struct sh4_data *) extra; |
140 |
int i; |
int i; |
141 |
|
|
142 |
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/* Fake RAM refresh: */ |
143 |
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d->bsc_rfcr ++; |
144 |
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if (d->bsc_rtcsr & (RTCSR_CMIE | RTCSR_OVIE)) { |
145 |
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fatal("sh4: RTCSR_CMIE | RTCSR_OVIE: TODO\n"); |
146 |
|
/* TODO: Implement refresh interrupts etc. */ |
147 |
|
exit(1); |
148 |
|
} |
149 |
|
|
150 |
|
/* Timer interrupts: */ |
151 |
for (i=0; i<N_SH4_TIMERS; i++) { |
for (i=0; i<N_SH4_TIMERS; i++) { |
152 |
int32_t old = d->tcnt[i]; |
int32_t old = d->tcnt[i]; |
153 |
|
|
184 |
} |
} |
185 |
|
|
186 |
|
|
187 |
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static void scif_reassert_interrupts(struct sh4_data *d) |
188 |
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{ |
189 |
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if (d->scif_scr & SCSCR2_RIE) { |
190 |
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if (d->scif_ssr & SCSSR2_DR) |
191 |
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INTERRUPT_ASSERT(d->scif_rx_irq); |
192 |
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} else { |
193 |
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INTERRUPT_DEASSERT(d->scif_rx_irq); |
194 |
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} |
195 |
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if (d->scif_scr & SCSCR2_TIE) { |
196 |
|
if (d->scif_ssr & (SCSSR2_TDFE | SCSSR2_TEND)) |
197 |
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INTERRUPT_ASSERT(d->scif_tx_irq); |
198 |
|
} else { |
199 |
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INTERRUPT_DEASSERT(d->scif_tx_irq); |
200 |
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} |
201 |
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} |
202 |
|
|
203 |
|
|
204 |
DEVICE_TICK(sh4) |
DEVICE_TICK(sh4) |
205 |
{ |
{ |
206 |
struct sh4_data *d = (struct sh4_data *) extra; |
struct sh4_data *d = (struct sh4_data *) extra; |
207 |
int i; |
int i; |
208 |
|
|
209 |
|
/* Serial controller interrupts: */ |
210 |
|
/* TODO: Which bits go to which interrupt? */ |
211 |
|
if (console_charavail(d->scif_console_handle)) |
212 |
|
d->scif_ssr |= SCSSR2_DR; |
213 |
|
else |
214 |
|
d->scif_ssr &= SCSSR2_DR; |
215 |
|
if (d->scif_delayed_tx) { |
216 |
|
if (--d->scif_delayed_tx == 0) |
217 |
|
d->scif_ssr |= SCSSR2_TDFE | SCSSR2_TEND; |
218 |
|
} |
219 |
|
|
220 |
|
scif_reassert_interrupts(d); |
221 |
|
|
222 |
|
/* Timer interrupts: */ |
223 |
for (i=0; i<N_SH4_TIMERS; i++) |
for (i=0; i<N_SH4_TIMERS; i++) |
224 |
if (d->timer_interrupts_pending[i] > 0) { |
if (d->timer_interrupts_pending[i] > 0) { |
225 |
cpu_interrupt(cpu, SH_INTEVT_TMU0_TUNI0 + 0x20 * i); |
INTERRUPT_ASSERT(d->timer_irq[i]); |
226 |
d->tcr[i] |= TCR_UNF; |
d->tcr[i] |= TCR_UNF; |
227 |
} |
} |
228 |
} |
} |
248 |
if (idata & SH4_ITLB_AA_V) |
if (idata & SH4_ITLB_AA_V) |
249 |
cpu->cd.sh.itlb_lo[e] |= SH4_PTEL_V; |
cpu->cd.sh.itlb_lo[e] |= SH4_PTEL_V; |
250 |
|
|
251 |
if (safe_to_invalidate) |
/* Invalidate if this ITLB entry previously belonged to the |
252 |
cpu->invalidate_translation_caches(cpu, |
currently running process, or if it was shared: */ |
253 |
old_hi & ~0xfff, INVALIDATE_VADDR); |
if (cpu->cd.sh.ptel & SH4_PTEL_SH || |
254 |
else |
(old_hi & SH4_ITLB_AA_ASID_MASK) == |
255 |
cpu->invalidate_translation_caches(cpu, |
(cpu->cd.sh.pteh & SH4_PTEH_ASID_MASK)) { |
256 |
0, INVALIDATE_ALL); |
if (safe_to_invalidate) |
257 |
|
cpu->invalidate_translation_caches(cpu, |
258 |
|
old_hi & ~0xfff, INVALIDATE_VADDR); |
259 |
|
else |
260 |
|
cpu->invalidate_translation_caches(cpu, |
261 |
|
0, INVALIDATE_ALL); |
262 |
|
} |
263 |
} else { |
} else { |
264 |
odata = cpu->cd.sh.itlb_hi[e] & |
odata = cpu->cd.sh.itlb_hi[e] & |
265 |
(SH4_ITLB_AA_VPN_MASK | SH4_ITLB_AA_ASID_MASK); |
(SH4_ITLB_AA_VPN_MASK | SH4_ITLB_AA_ASID_MASK); |
285 |
} |
} |
286 |
|
|
287 |
if (writeflag == MEM_WRITE) { |
if (writeflag == MEM_WRITE) { |
288 |
|
uint32_t old_lo = cpu->cd.sh.itlb_lo[e]; |
289 |
int safe_to_invalidate = 0; |
int safe_to_invalidate = 0; |
290 |
if ((cpu->cd.sh.itlb_lo[e] & SH4_PTEL_SZ_MASK)==SH4_PTEL_SZ_4K) |
if ((cpu->cd.sh.itlb_lo[e] & SH4_PTEL_SZ_MASK)==SH4_PTEL_SZ_4K) |
291 |
safe_to_invalidate = 1; |
safe_to_invalidate = 1; |
294 |
cpu->cd.sh.itlb_lo[e] &= ~mask; |
cpu->cd.sh.itlb_lo[e] &= ~mask; |
295 |
cpu->cd.sh.itlb_lo[e] |= (idata & mask); |
cpu->cd.sh.itlb_lo[e] |= (idata & mask); |
296 |
|
|
297 |
if (safe_to_invalidate) |
/* Invalidate if this ITLB entry belongs to the |
298 |
cpu->invalidate_translation_caches(cpu, |
currently running process, or if it was shared: */ |
299 |
cpu->cd.sh.itlb_hi[e] & ~0xfff, INVALIDATE_VADDR); |
if (old_lo & SH4_PTEL_SH || |
300 |
else |
(cpu->cd.sh.itlb_hi[e] & SH4_ITLB_AA_ASID_MASK) == |
301 |
cpu->invalidate_translation_caches(cpu, |
(cpu->cd.sh.pteh & SH4_PTEH_ASID_MASK)) { |
302 |
0, INVALIDATE_ALL); |
if (safe_to_invalidate) |
303 |
|
cpu->invalidate_translation_caches(cpu, |
304 |
|
cpu->cd.sh.itlb_hi[e] & ~0xfff, |
305 |
|
INVALIDATE_VADDR); |
306 |
|
else |
307 |
|
cpu->invalidate_translation_caches(cpu, |
308 |
|
0, INVALIDATE_ALL); |
309 |
|
} |
310 |
} else { |
} else { |
311 |
odata = cpu->cd.sh.itlb_lo[e] & mask; |
odata = cpu->cd.sh.itlb_lo[e] & mask; |
312 |
memory_writemax64(cpu, data, len, odata); |
memory_writemax64(cpu, data, len, odata); |
414 |
cpu->invalidate_translation_caches(cpu, |
cpu->invalidate_translation_caches(cpu, |
415 |
vaddr_to_invalidate, INVALIDATE_VADDR); |
vaddr_to_invalidate, INVALIDATE_VADDR); |
416 |
else |
else |
417 |
cpu->invalidate_translation_caches(cpu, 0, INVALIDATE_ALL); |
cpu->invalidate_translation_caches(cpu, 0, |
418 |
|
INVALIDATE_ALL); |
419 |
} else { |
} else { |
420 |
odata = cpu->cd.sh.utlb_hi[e] & |
odata = cpu->cd.sh.utlb_hi[e] & |
421 |
(SH4_UTLB_AA_VPN_MASK | SH4_UTLB_AA_ASID_MASK); |
(SH4_UTLB_AA_VPN_MASK | SH4_UTLB_AA_ASID_MASK); |
443 |
} |
} |
444 |
|
|
445 |
if (writeflag == MEM_WRITE) { |
if (writeflag == MEM_WRITE) { |
446 |
|
uint32_t old_lo = cpu->cd.sh.utlb_lo[e]; |
447 |
int safe_to_invalidate = 0; |
int safe_to_invalidate = 0; |
448 |
if ((cpu->cd.sh.utlb_lo[e] & SH4_PTEL_SZ_MASK)==SH4_PTEL_SZ_4K) |
if ((cpu->cd.sh.utlb_lo[e] & SH4_PTEL_SZ_MASK)==SH4_PTEL_SZ_4K) |
449 |
safe_to_invalidate = 1; |
safe_to_invalidate = 1; |
452 |
cpu->cd.sh.utlb_lo[e] &= ~mask; |
cpu->cd.sh.utlb_lo[e] &= ~mask; |
453 |
cpu->cd.sh.utlb_lo[e] |= (idata & mask); |
cpu->cd.sh.utlb_lo[e] |= (idata & mask); |
454 |
|
|
455 |
if (safe_to_invalidate) |
/* Invalidate if this UTLB entry belongs to the |
456 |
cpu->invalidate_translation_caches(cpu, |
currently running process, or if it was shared: */ |
457 |
cpu->cd.sh.utlb_hi[e] & ~0xfff, INVALIDATE_VADDR); |
if (old_lo & SH4_PTEL_SH || |
458 |
else |
(cpu->cd.sh.utlb_hi[e] & SH4_ITLB_AA_ASID_MASK) == |
459 |
cpu->invalidate_translation_caches(cpu, |
(cpu->cd.sh.pteh & SH4_PTEH_ASID_MASK)) { |
460 |
0, INVALIDATE_ALL); |
if (safe_to_invalidate) |
461 |
|
cpu->invalidate_translation_caches(cpu, |
462 |
|
cpu->cd.sh.utlb_hi[e] & ~0xfff, |
463 |
|
INVALIDATE_VADDR); |
464 |
|
else |
465 |
|
cpu->invalidate_translation_caches(cpu, |
466 |
|
0, INVALIDATE_ALL); |
467 |
|
} |
468 |
} else { |
} else { |
469 |
odata = cpu->cd.sh.utlb_lo[e] & mask; |
odata = cpu->cd.sh.utlb_lo[e] & mask; |
470 |
memory_writemax64(cpu, data, len, odata); |
memory_writemax64(cpu, data, len, odata); |
478 |
{ |
{ |
479 |
struct sh4_data *d = (struct sh4_data *) extra; |
struct sh4_data *d = (struct sh4_data *) extra; |
480 |
uint64_t idata = 0, odata = 0; |
uint64_t idata = 0, odata = 0; |
481 |
int timer_nr = 0; |
int timer_nr = 0, dma_channel = 0; |
482 |
|
|
483 |
if (writeflag == MEM_WRITE) |
if (writeflag == MEM_WRITE) |
484 |
idata = memory_readmax64(cpu, data, len); |
idata = memory_readmax64(cpu, data, len); |
485 |
|
|
486 |
relative_addr += SH4_REG_BASE; |
relative_addr += SH4_REG_BASE; |
487 |
|
|
488 |
|
/* SD-RAM access uses address only: */ |
489 |
|
if (relative_addr >= 0xff900000 && relative_addr <= 0xff97ffff) { |
490 |
|
/* Possibly not 100% correct... TODO */ |
491 |
|
int v = (relative_addr >> 2) & 0xffff; |
492 |
|
if (relative_addr & 0x00040000) |
493 |
|
d->sdmr3 = v; |
494 |
|
else |
495 |
|
d->sdmr2 = v; |
496 |
|
debug("[ sh4: sdmr%i set to 0x%04"PRIx16" ]\n", |
497 |
|
relative_addr & 0x00040000? 3 : 2, v); |
498 |
|
return 1; |
499 |
|
} |
500 |
|
|
501 |
|
|
502 |
switch (relative_addr) { |
switch (relative_addr) { |
503 |
|
|
504 |
/*************************************************/ |
/*************************************************/ |
519 |
cpu->cd.sh.pteh = idata; |
cpu->cd.sh.pteh = idata; |
520 |
|
|
521 |
if ((idata & SH4_PTEH_ASID_MASK) != old_asid) { |
if ((idata & SH4_PTEH_ASID_MASK) != old_asid) { |
522 |
/* TODO: Don't invalidate everything? */ |
/* |
523 |
|
* TODO: Don't invalidate everything, |
524 |
|
* only those pages that belonged to the |
525 |
|
* old asid. |
526 |
|
*/ |
527 |
cpu->invalidate_translation_caches( |
cpu->invalidate_translation_caches( |
528 |
cpu, 0, INVALIDATE_ALL); |
cpu, 0, INVALIDATE_ALL); |
529 |
} |
} |
564 |
} else { |
} else { |
565 |
if (idata & SH4_MMUCR_TI) { |
if (idata & SH4_MMUCR_TI) { |
566 |
/* TLB invalidate. */ |
/* TLB invalidate. */ |
567 |
|
int i; |
568 |
|
for (i = 0; i < SH_N_ITLB_ENTRIES; i++) |
569 |
|
cpu->cd.sh.itlb_lo[i] &= |
570 |
|
~SH4_PTEL_V; |
571 |
|
|
572 |
|
for (i = 0; i < SH_N_UTLB_ENTRIES; i++) |
573 |
|
cpu->cd.sh.utlb_lo[i] &= |
574 |
|
~SH4_PTEL_V; |
575 |
|
|
|
/* TODO: Only invalidate something specific? |
|
|
And not everything? */ |
|
576 |
cpu->invalidate_translation_caches(cpu, |
cpu->invalidate_translation_caches(cpu, |
577 |
0, INVALIDATE_ALL); |
0, INVALIDATE_ALL); |
578 |
|
|
740 |
} |
} |
741 |
|
|
742 |
if (d->tcr[timer_nr] & TCR_UNF && !(idata & TCR_UNF)) { |
if (d->tcr[timer_nr] & TCR_UNF && !(idata & TCR_UNF)) { |
743 |
cpu_interrupt_ack(cpu, SH_INTEVT_TMU0_TUNI0 |
INTERRUPT_DEASSERT(d->timer_irq[timer_nr]); |
|
+ 0x20 * timer_nr); |
|
744 |
if (d->timer_interrupts_pending[timer_nr] > 0) |
if (d->timer_interrupts_pending[timer_nr] > 0) |
745 |
d->timer_interrupts_pending[timer_nr]--; |
d->timer_interrupts_pending[timer_nr]--; |
746 |
} |
} |
751 |
|
|
752 |
|
|
753 |
/*************************************************/ |
/*************************************************/ |
754 |
|
/* DMAC: DMA Controller */ |
755 |
|
|
756 |
|
case SH4_SAR3: |
757 |
|
dma_channel ++; |
758 |
|
case SH4_SAR2: |
759 |
|
dma_channel ++; |
760 |
|
case SH4_SAR1: |
761 |
|
dma_channel ++; |
762 |
|
case SH4_SAR0: |
763 |
|
dma_channel ++; |
764 |
|
if (writeflag == MEM_READ) |
765 |
|
odata = cpu->cd.sh.dmac_sar[dma_channel]; |
766 |
|
else |
767 |
|
cpu->cd.sh.dmac_sar[dma_channel] = idata; |
768 |
|
break; |
769 |
|
|
770 |
|
case SH4_DAR3: |
771 |
|
dma_channel ++; |
772 |
|
case SH4_DAR2: |
773 |
|
dma_channel ++; |
774 |
|
case SH4_DAR1: |
775 |
|
dma_channel ++; |
776 |
|
case SH4_DAR0: |
777 |
|
dma_channel ++; |
778 |
|
if (writeflag == MEM_READ) |
779 |
|
odata = cpu->cd.sh.dmac_dar[dma_channel]; |
780 |
|
else |
781 |
|
cpu->cd.sh.dmac_dar[dma_channel] = idata; |
782 |
|
break; |
783 |
|
|
784 |
|
case SH4_DMATCR3: |
785 |
|
dma_channel ++; |
786 |
|
case SH4_DMATCR2: |
787 |
|
dma_channel ++; |
788 |
|
case SH4_DMATCR1: |
789 |
|
dma_channel ++; |
790 |
|
case SH4_DMATCR0: |
791 |
|
dma_channel ++; |
792 |
|
if (writeflag == MEM_READ) |
793 |
|
odata = cpu->cd.sh.dmac_tcr[dma_channel] & 0x00ffffff; |
794 |
|
else { |
795 |
|
if (idata & ~0x00ffffff) { |
796 |
|
fatal("[ SH4 DMA: Attempt to set top 8 " |
797 |
|
"bits of the count register? 0x%08" |
798 |
|
PRIx32" ]\n", (uint32_t) idata); |
799 |
|
exit(1); |
800 |
|
} |
801 |
|
|
802 |
|
/* Special case: writing 0 to the count register |
803 |
|
means 16777216: */ |
804 |
|
if (idata == 0) |
805 |
|
idata = 0x01000000; |
806 |
|
cpu->cd.sh.dmac_tcr[dma_channel] = idata; |
807 |
|
} |
808 |
|
break; |
809 |
|
|
810 |
|
case SH4_CHCR3: |
811 |
|
dma_channel ++; |
812 |
|
case SH4_CHCR2: |
813 |
|
dma_channel ++; |
814 |
|
case SH4_CHCR1: |
815 |
|
dma_channel ++; |
816 |
|
case SH4_CHCR0: |
817 |
|
dma_channel ++; |
818 |
|
if (writeflag == MEM_READ) |
819 |
|
odata = cpu->cd.sh.dmac_chcr[dma_channel]; |
820 |
|
else { |
821 |
|
/* IP.BIN sets this to 0x12c0, and I want to know if |
822 |
|
some other guest OS uses other values. */ |
823 |
|
if (idata != 0x12c0) { |
824 |
|
fatal("[ SH4 DMA: Attempt to set chcr " |
825 |
|
"to 0x%08"PRIx32" ]\n", (uint32_t) idata); |
826 |
|
exit(1); |
827 |
|
} |
828 |
|
|
829 |
|
cpu->cd.sh.dmac_chcr[dma_channel] = idata; |
830 |
|
} |
831 |
|
break; |
832 |
|
|
833 |
|
|
834 |
|
/*************************************************/ |
835 |
/* BSC: Bus State Controller */ |
/* BSC: Bus State Controller */ |
836 |
|
|
837 |
case SH4_RFCR: |
case SH4_BCR1: |
838 |
/* TODO */ |
if (writeflag == MEM_WRITE) |
839 |
fatal("[ SH4_RFCR: TODO ]\n"); |
d->bsc_bcr1 = idata & 0x033efffd; |
840 |
odata = 0x11; |
else { |
841 |
|
odata = d->bsc_bcr1; |
842 |
|
if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
843 |
|
odata |= BCR1_LITTLE_ENDIAN; |
844 |
|
} |
845 |
|
break; |
846 |
|
|
847 |
|
case SH4_BCR2: |
848 |
|
if (len != sizeof(uint16_t)) { |
849 |
|
fatal("Non-16-bit SH4_BCR2 access?\n"); |
850 |
|
exit(1); |
851 |
|
} |
852 |
|
if (writeflag == MEM_WRITE) |
853 |
|
d->bsc_bcr2 = idata & 0x3ffd; |
854 |
|
else |
855 |
|
odata = d->bsc_bcr2; |
856 |
|
break; |
857 |
|
|
858 |
|
case SH4_WCR1: |
859 |
|
if (writeflag == MEM_WRITE) |
860 |
|
d->bsc_wcr1 = idata & 0x77777777; |
861 |
|
else |
862 |
|
odata = d->bsc_wcr1; |
863 |
|
break; |
864 |
|
|
865 |
|
case SH4_WCR2: |
866 |
|
if (writeflag == MEM_WRITE) |
867 |
|
d->bsc_wcr2 = idata & 0xfffeefff; |
868 |
|
else |
869 |
|
odata = d->bsc_wcr2; |
870 |
|
break; |
871 |
|
|
872 |
|
case SH4_MCR: |
873 |
|
if (writeflag == MEM_WRITE) |
874 |
|
d->bsc_mcr = idata & 0xf8bbffff; |
875 |
|
else |
876 |
|
odata = d->bsc_mcr; |
877 |
break; |
break; |
878 |
|
|
879 |
#if 0 |
case SH4_RTCSR: |
|
case SH4_UNKNOWN_2C: |
|
|
/* Not really part of the BSC? The 2C and 30 registers |
|
|
have to do with I/O pins... TODO */ |
|
880 |
/* |
/* |
881 |
* TODO: Perhaps this isn't actually part of the Bus State |
* Refresh Time Control/Status Register. Called RTCSR in |
882 |
* controller? Marcus Comstedt's video.s tutorial on |
* NetBSD, but RTSCR in the SH7750 manual? |
|
* how to output video on the Dreamcast indicates that |
|
|
* this is a way to sense which video cable is |
|
|
* connected. |
|
883 |
*/ |
*/ |
884 |
if (writeflag == MEM_WRITE) { |
if (writeflag == MEM_WRITE) { |
885 |
d->unknown_2c = idata; |
idata &= 0x00ff; |
886 |
d->unknown_30 = idata; |
if (idata & RTCSR_CMF) { |
887 |
|
idata = (idata & ~RTCSR_CMF) |
888 |
|
| (d->bsc_rtcsr & RTCSR_CMF); |
889 |
|
} |
890 |
|
d->bsc_rtcsr = idata & 0x00ff; |
891 |
} else |
} else |
892 |
odata = d->unknown_2c; |
odata = d->bsc_rtcsr; |
893 |
break; |
break; |
|
#endif |
|
894 |
|
|
895 |
#if 1 |
case SH4_RTCOR: |
896 |
case SH4_UNKNOWN_30: |
/* Refresh Time Constant Register (8 bits): */ |
897 |
if (writeflag == MEM_WRITE) |
if (writeflag == MEM_WRITE) |
898 |
d->unknown_30 = idata; |
d->bsc_rtcor = idata & 0x00ff; |
899 |
else { |
else |
900 |
odata = d->unknown_30; |
odata = d->bsc_rtcor & 0x00ff; |
901 |
|
break; |
902 |
|
|
903 |
|
case SH4_RFCR: |
904 |
|
/* Refresh Count Register (10 bits): */ |
905 |
|
if (writeflag == MEM_WRITE) |
906 |
|
d->bsc_rfcr = idata & 0x03ff; |
907 |
|
else |
908 |
|
odata = d->bsc_rfcr & 0x03ff; |
909 |
|
break; |
910 |
|
|
911 |
|
|
912 |
|
/*******************************************/ |
913 |
|
/* GPIO: General-purpose I/O controller */ |
914 |
|
|
915 |
|
case SH4_PCTRA: |
916 |
|
if (writeflag == MEM_WRITE) |
917 |
|
d->pctra = idata; |
918 |
|
else |
919 |
|
odata = d->pctra; |
920 |
|
break; |
921 |
|
|
922 |
/* SUPER-UGLY HACK! TODO */ |
case SH4_PDTRA: |
923 |
d->unknown_30 ++; |
if (writeflag == MEM_WRITE) { |
924 |
|
debug("[ sh4: pdtra: write: TODO ]\n"); |
925 |
|
d->pdtra = idata; |
926 |
|
} else { |
927 |
|
debug("[ sh4: pdtra: read: TODO ]\n"); |
928 |
|
odata = d->pdtra; |
929 |
|
} |
930 |
|
break; |
931 |
|
|
932 |
|
case SH4_PCTRB: |
933 |
|
if (writeflag == MEM_WRITE) |
934 |
|
d->pctrb = idata; |
935 |
|
else |
936 |
|
odata = d->pctrb; |
937 |
|
break; |
938 |
|
|
939 |
|
case SH4_PDTRB: |
940 |
|
if (writeflag == MEM_WRITE) { |
941 |
|
debug("[ sh4: pdtrb: write: TODO ]\n"); |
942 |
|
d->pdtrb = idata; |
943 |
|
} else { |
944 |
|
debug("[ sh4: pdtrb: read: TODO ]\n"); |
945 |
|
odata = d->pdtrb; |
946 |
} |
} |
947 |
break; |
break; |
|
#endif |
|
948 |
|
|
949 |
|
|
950 |
/*********************************/ |
/*********************************/ |
981 |
cpu->cd.sh.intc_iprc = idata; |
cpu->cd.sh.intc_iprc = idata; |
982 |
break; |
break; |
983 |
|
|
984 |
|
case SH4_IPRD: |
985 |
|
if (writeflag == MEM_READ) |
986 |
|
odata = cpu->cd.sh.intc_iprd; |
987 |
|
else |
988 |
|
cpu->cd.sh.intc_iprd = idata; |
989 |
|
break; |
990 |
|
|
991 |
|
|
992 |
/*************************************************/ |
/*************************************************/ |
993 |
/* SCIF: Serial Controller Interface with FIFO */ |
/* SCIF: Serial Controller Interface with FIFO */ |
994 |
|
|
995 |
|
case SH4_SCIF_BASE + SCIF_SMR: |
996 |
|
if (writeflag == MEM_WRITE) { |
997 |
|
d->scif_smr = idata; |
998 |
|
} else { |
999 |
|
odata = d->scif_smr; |
1000 |
|
} |
1001 |
|
break; |
1002 |
|
|
1003 |
|
case SH4_SCIF_BASE + SCIF_BRR: |
1004 |
|
if (writeflag == MEM_WRITE) { |
1005 |
|
d->scif_brr = idata; |
1006 |
|
} else { |
1007 |
|
odata = d->scif_brr; |
1008 |
|
} |
1009 |
|
break; |
1010 |
|
|
1011 |
|
case SH4_SCIF_BASE + SCIF_SCR: |
1012 |
|
if (writeflag == MEM_WRITE) { |
1013 |
|
d->scif_scr = idata; |
1014 |
|
scif_reassert_interrupts(d); |
1015 |
|
} else { |
1016 |
|
odata = d->scif_scr; |
1017 |
|
} |
1018 |
|
break; |
1019 |
|
|
1020 |
case SH4_SCIF_BASE + SCIF_FTDR: |
case SH4_SCIF_BASE + SCIF_FTDR: |
1021 |
if (writeflag == MEM_WRITE) |
if (writeflag == MEM_WRITE) { |
1022 |
console_putchar(d->scif_console_handle, idata); |
console_putchar(d->scif_console_handle, idata); |
1023 |
|
d->scif_delayed_tx = 1; |
1024 |
|
} |
1025 |
break; |
break; |
1026 |
|
|
1027 |
case SH4_SCIF_BASE + SCIF_SSR: |
case SH4_SCIF_BASE + SCIF_SSR: |
1028 |
/* TODO: Implement more of this. */ |
if (writeflag == MEM_READ) { |
1029 |
odata = SCSSR2_TDFE | SCSSR2_TEND; |
odata = d->scif_ssr; |
1030 |
if (console_charavail(d->scif_console_handle)) |
} else { |
1031 |
odata |= SCSSR2_DR; |
d->scif_ssr &= ~idata; |
1032 |
|
scif_reassert_interrupts(d); |
1033 |
|
} |
1034 |
break; |
break; |
1035 |
|
|
1036 |
case SH4_SCIF_BASE + SCIF_FRDR: |
case SH4_SCIF_BASE + SCIF_FRDR: |
1039 |
if (x == 13) |
if (x == 13) |
1040 |
x = 10; |
x = 10; |
1041 |
odata = x < 0? 0 : x; |
odata = x < 0? 0 : x; |
1042 |
|
d->scif_ssr &= ~SCSSR2_DR; |
1043 |
|
} |
1044 |
|
break; |
1045 |
|
|
1046 |
|
case SH4_SCIF_BASE + SCIF_FCR: |
1047 |
|
if (writeflag == MEM_WRITE) { |
1048 |
|
d->scif_fcr = idata; |
1049 |
|
} else { |
1050 |
|
odata = d->scif_fcr; |
1051 |
} |
} |
1052 |
break; |
break; |
1053 |
|
|
1055 |
odata = console_charavail(d->scif_console_handle); |
odata = console_charavail(d->scif_console_handle); |
1056 |
break; |
break; |
1057 |
|
|
1058 |
|
|
1059 |
|
/*************************************************/ |
1060 |
|
|
1061 |
|
case SH4_RSECCNT: |
1062 |
|
case SH4_RMINCNT: |
1063 |
|
case SH4_RHRCNT: |
1064 |
|
case SH4_RWKCNT: |
1065 |
|
case SH4_RDAYCNT: |
1066 |
|
case SH4_RMONCNT: |
1067 |
|
case SH4_RYRCNT: |
1068 |
|
case SH4_RSECAR: |
1069 |
|
case SH4_RMINAR: |
1070 |
|
case SH4_RHRAR: |
1071 |
|
case SH4_RWKAR: |
1072 |
|
case SH4_RDAYAR: |
1073 |
|
case SH4_RMONAR: |
1074 |
|
if (writeflag == MEM_WRITE) { |
1075 |
|
d->rtc_reg[(relative_addr - 0xffc80000) / 4] = idata; |
1076 |
|
} else { |
1077 |
|
/* TODO: Update rtc_reg based on host's date/time. */ |
1078 |
|
odata = d->rtc_reg[(relative_addr - 0xffc80000) / 4]; |
1079 |
|
} |
1080 |
|
break; |
1081 |
|
|
1082 |
|
case SH4_RCR1: |
1083 |
|
if (writeflag == MEM_READ) |
1084 |
|
odata = d->rtc_rcr1; |
1085 |
|
else { |
1086 |
|
d->rtc_rcr1 = idata; |
1087 |
|
if (idata & 0x18) { |
1088 |
|
fatal("SH4: TODO: RTC interrupt enable\n"); |
1089 |
|
exit(1); |
1090 |
|
} |
1091 |
|
} |
1092 |
|
break; |
1093 |
|
|
1094 |
|
|
1095 |
/*************************************************/ |
/*************************************************/ |
1096 |
|
|
1097 |
default:if (writeflag == MEM_READ) { |
default:if (writeflag == MEM_READ) { |
1101 |
fatal("[ sh4: write to addr 0x%x: 0x%x ]\n", |
fatal("[ sh4: write to addr 0x%x: 0x%x ]\n", |
1102 |
(int)relative_addr, (int)idata); |
(int)relative_addr, (int)idata); |
1103 |
} |
} |
1104 |
|
#ifdef SH4_DEGUG |
1105 |
|
// exit(1); |
1106 |
|
#endif |
1107 |
} |
} |
1108 |
|
|
1109 |
if (writeflag == MEM_READ) |
if (writeflag == MEM_READ) |
1115 |
|
|
1116 |
DEVINIT(sh4) |
DEVINIT(sh4) |
1117 |
{ |
{ |
1118 |
|
char tmp[200]; |
1119 |
struct machine *machine = devinit->machine; |
struct machine *machine = devinit->machine; |
1120 |
struct sh4_data *d = malloc(sizeof(struct sh4_data)); |
struct sh4_data *d = malloc(sizeof(struct sh4_data)); |
1121 |
if (d == NULL) { |
if (d == NULL) { |
1127 |
d->scif_console_handle = console_start_slave(devinit->machine, |
d->scif_console_handle = console_start_slave(devinit->machine, |
1128 |
"SH4 SCIF", 1); |
"SH4 SCIF", 1); |
1129 |
|
|
1130 |
|
snprintf(tmp, sizeof(tmp), "%s.irq[0x%x]", |
1131 |
|
devinit->interrupt_path, SH4_INTEVT_SCIF_RXI); |
1132 |
|
INTERRUPT_CONNECT(tmp, d->scif_rx_irq); |
1133 |
|
snprintf(tmp, sizeof(tmp), "%s.irq[0x%x]", |
1134 |
|
devinit->interrupt_path, SH4_INTEVT_SCIF_TXI); |
1135 |
|
INTERRUPT_CONNECT(tmp, d->scif_tx_irq); |
1136 |
|
|
1137 |
memory_device_register(machine->memory, devinit->name, |
memory_device_register(machine->memory, devinit->name, |
1138 |
SH4_REG_BASE, 0x01000000, dev_sh4_access, d, DM_DEFAULT, NULL); |
SH4_REG_BASE, 0x01000000, dev_sh4_access, d, DM_DEFAULT, NULL); |
1139 |
|
|
1151 |
* |
* |
1152 |
* TODO: Implement more correct cache behaviour? |
* TODO: Implement more correct cache behaviour? |
1153 |
*/ |
*/ |
1154 |
dev_ram_init(machine, SH4_CCIA, SH4_ICACHE_SIZE, DEV_RAM_RAM, 0x0); |
dev_ram_init(machine, SH4_CCIA, SH4_ICACHE_SIZE * 2, DEV_RAM_RAM, 0x0); |
1155 |
dev_ram_init(machine, SH4_CCID, SH4_ICACHE_SIZE, DEV_RAM_RAM, 0x0); |
dev_ram_init(machine, SH4_CCID, SH4_ICACHE_SIZE, DEV_RAM_RAM, 0x0); |
1156 |
dev_ram_init(machine, SH4_CCDA, SH4_DCACHE_SIZE, DEV_RAM_RAM, 0x0); |
dev_ram_init(machine, SH4_CCDA, SH4_DCACHE_SIZE * 2, DEV_RAM_RAM, 0x0); |
1157 |
dev_ram_init(machine, SH4_CCDD, SH4_DCACHE_SIZE, DEV_RAM_RAM, 0x0); |
dev_ram_init(machine, SH4_CCDD, SH4_DCACHE_SIZE, DEV_RAM_RAM, 0x0); |
1158 |
|
|
1159 |
/* 0xf2000000 SH4_ITLB_AA */ |
/* 0xf2000000 SH4_ITLB_AA */ |
1160 |
memory_device_register(machine->memory, devinit->name, SH4_ITLB_AA, |
memory_device_register(machine->memory, devinit->name, SH4_ITLB_AA, |
1181 |
d->tcor[1] = 0xffffffff; d->tcnt[1] = 0xffffffff; |
d->tcor[1] = 0xffffffff; d->tcnt[1] = 0xffffffff; |
1182 |
d->tcor[2] = 0xffffffff; d->tcnt[2] = 0xffffffff; |
d->tcor[2] = 0xffffffff; d->tcnt[2] = 0xffffffff; |
1183 |
|
|
1184 |
|
snprintf(tmp, sizeof(tmp), "emul[0].machine[0].cpu[0].irq[0x%x]", |
1185 |
|
SH_INTEVT_TMU0_TUNI0); |
1186 |
|
if (!interrupt_handler_lookup(tmp, &d->timer_irq[0])) { |
1187 |
|
fatal("Could not find interrupt '%s'.\n", tmp); |
1188 |
|
exit(1); |
1189 |
|
} |
1190 |
|
snprintf(tmp, sizeof(tmp), "emul[0].machine[0].cpu[0].irq[0x%x]", |
1191 |
|
SH_INTEVT_TMU1_TUNI1); |
1192 |
|
if (!interrupt_handler_lookup(tmp, &d->timer_irq[1])) { |
1193 |
|
fatal("Could not find interrupt '%s'.\n", tmp); |
1194 |
|
exit(1); |
1195 |
|
} |
1196 |
|
snprintf(tmp, sizeof(tmp), "emul[0].machine[0].cpu[0].irq[0x%x]", |
1197 |
|
SH_INTEVT_TMU2_TUNI2); |
1198 |
|
if (!interrupt_handler_lookup(tmp, &d->timer_irq[2])) { |
1199 |
|
fatal("Could not find interrupt '%s'.\n", tmp); |
1200 |
|
exit(1); |
1201 |
|
} |
1202 |
|
|
1203 |
|
/* Bus State Controller initial values: */ |
1204 |
|
d->bsc_bcr2 = 0x3ffc; |
1205 |
|
d->bsc_wcr1 = 0x77777777; |
1206 |
|
d->bsc_wcr2 = 0xfffeefff; |
1207 |
|
|
1208 |
return 1; |
return 1; |
1209 |
} |
} |
1210 |
|
|