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ETRAX: Drop _t for the serial type.
[qemu.git] / hw / openpic.c
CommitLineData
dbda808a
FB		 1/*
2 * OpenPIC emulation
5fafdf24 3 *
dbda808a 4 * Copyright (c) 2004 Jocelyn Mayer
5fafdf24 5 *
dbda808a
FB		 6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24/*
25 *
26 * Based on OpenPic implementations:
67b55785 27 * - Intel GW80314 I/O companion chip developer's manual
dbda808a
FB		 28 * - Motorola MPC8245 & MPC8540 user manuals.
29 * - Motorola MCP750 (aka Raven) programmer manual.
30 * - Motorola Harrier programmer manuel
31 *
32 * Serial interrupts, as implemented in Raven chipset are not supported yet.
5fafdf24 33 *
dbda808a 34 */
87ecb68b
PB		 35#include "hw.h"
36#include "ppc_mac.h"
37#include "pci.h"
b7169916 38#include "openpic.h"
dbda808a 39
611493d9 40//#define DEBUG_OPENPIC
dbda808a
FB		 41
42#ifdef DEBUG_OPENPIC
43#define DPRINTF(fmt, args...) do { printf(fmt , ##args); } while (0)
44#else
45#define DPRINTF(fmt, args...) do { } while (0)
46#endif
dbda808a
FB		 47
48#define USE_MPCxxx /* Intel model is broken, for now */
49
50#if defined (USE_INTEL_GW80314)
51/* Intel GW80314 I/O Companion chip */
52
53#define MAX_CPU 4
54#define MAX_IRQ 32
55#define MAX_DBL 4
56#define MAX_MBX 4
57#define MAX_TMR 4
58#define VECTOR_BITS 8
59#define MAX_IPI 0
60
61#define VID (0x00000000)
62
dbda808a
FB		 63#elif defined(USE_MPCxxx)
64
65#define MAX_CPU 2
b7169916 66#define MAX_IRQ 128
dbda808a
FB		 67#define MAX_DBL 0
68#define MAX_MBX 0
69#define MAX_TMR 4
70#define VECTOR_BITS 8
71#define MAX_IPI 4
72#define VID 0x03 /* MPIC version ID */
73#define VENI 0x00000000 /* Vendor ID */
74
75enum {
76 IRQ_IPVP = 0,
77 IRQ_IDE,
78};
79
b7169916
AJ		 80/* OpenPIC */
81#define OPENPIC_MAX_CPU 2
82#define OPENPIC_MAX_IRQ 64
83#define OPENPIC_EXT_IRQ 48
84#define OPENPIC_MAX_TMR MAX_TMR
85#define OPENPIC_MAX_IPI MAX_IPI
dbda808a 86
b7169916
AJ		 87/* Interrupt definitions */
88#define OPENPIC_IRQ_FE (OPENPIC_EXT_IRQ) /* Internal functional IRQ */
89#define OPENPIC_IRQ_ERR (OPENPIC_EXT_IRQ + 1) /* Error IRQ */
90#define OPENPIC_IRQ_TIM0 (OPENPIC_EXT_IRQ + 2) /* First timer IRQ */
91#if OPENPIC_MAX_IPI > 0
92#define OPENPIC_IRQ_IPI0 (OPENPIC_IRQ_TIM0 + OPENPIC_MAX_TMR) /* First IPI IRQ */
93#define OPENPIC_IRQ_DBL0 (OPENPIC_IRQ_IPI0 + (OPENPIC_MAX_CPU * OPENPIC_MAX_IPI)) /* First doorbell IRQ */
dbda808a 94#else
b7169916
AJ		 95#define OPENPIC_IRQ_DBL0 (OPENPIC_IRQ_TIM0 + OPENPIC_MAX_TMR) /* First doorbell IRQ */
96#define OPENPIC_IRQ_MBX0 (OPENPIC_IRQ_DBL0 + OPENPIC_MAX_DBL) /* First mailbox IRQ */
dbda808a
FB		 97#endif
98
b7169916
AJ		 99/* MPIC */
100#define MPIC_MAX_CPU 1
101#define MPIC_MAX_EXT 12
102#define MPIC_MAX_INT 64
103#define MPIC_MAX_MSG 4
104#define MPIC_MAX_MSI 8
105#define MPIC_MAX_TMR MAX_TMR
106#define MPIC_MAX_IPI MAX_IPI
107#define MPIC_MAX_IRQ (MPIC_MAX_EXT + MPIC_MAX_INT + MPIC_MAX_TMR + MPIC_MAX_MSG + MPIC_MAX_MSI + (MPIC_MAX_IPI * MPIC_MAX_CPU))
dbda808a
FB		 108
109/* Interrupt definitions */
b7169916
AJ		 110#define MPIC_EXT_IRQ 0
111#define MPIC_INT_IRQ (MPIC_EXT_IRQ + MPIC_MAX_EXT)
112#define MPIC_TMR_IRQ (MPIC_INT_IRQ + MPIC_MAX_INT)
113#define MPIC_MSG_IRQ (MPIC_TMR_IRQ + MPIC_MAX_TMR)
114#define MPIC_MSI_IRQ (MPIC_MSG_IRQ + MPIC_MAX_MSG)
115#define MPIC_IPI_IRQ (MPIC_MSI_IRQ + MPIC_MAX_MSI)
116
117#define MPIC_GLB_REG_START 0x0
118#define MPIC_GLB_REG_SIZE 0x10F0
119#define MPIC_TMR_REG_START 0x10F0
120#define MPIC_TMR_REG_SIZE 0x220
121#define MPIC_EXT_REG_START 0x10000
122#define MPIC_EXT_REG_SIZE 0x180
123#define MPIC_INT_REG_START 0x10200
124#define MPIC_INT_REG_SIZE 0x800
125#define MPIC_MSG_REG_START 0x11600
126#define MPIC_MSG_REG_SIZE 0x100
127#define MPIC_MSI_REG_START 0x11C00
128#define MPIC_MSI_REG_SIZE 0x100
129#define MPIC_CPU_REG_START 0x20000
130#define MPIC_CPU_REG_SIZE 0x100
131
132enum mpic_ide_bits {
133 IDR_EP = 0,
134 IDR_CI0 = 1,
135 IDR_CI1 = 2,
136 IDR_P1 = 30,
137 IDR_P0 = 31,
138};
139
dbda808a 140#else
b7169916 141#error "Please select which OpenPic implementation is to be emulated"
dbda808a
FB		 142#endif
143
144#define BF_WIDTH(_bits_) \
145(((_bits_) + (sizeof(uint32_t) * 8) - 1) / (sizeof(uint32_t) * 8))
146
147static inline void set_bit (uint32_t *field, int bit)
148{
149 field[bit >> 5] |= 1 << (bit & 0x1F);
150}
151
152static inline void reset_bit (uint32_t *field, int bit)
153{
154 field[bit >> 5] &= ~(1 << (bit & 0x1F));
155}
156
157static inline int test_bit (uint32_t *field, int bit)
158{
159 return (field[bit >> 5] & 1 << (bit & 0x1F)) != 0;
160}
161
162enum {
163 IRQ_EXTERNAL = 0x01,
164 IRQ_INTERNAL = 0x02,
165 IRQ_TIMER = 0x04,
166 IRQ_SPECIAL = 0x08,
b1d8e52e 167};
dbda808a
FB		 168
169typedef struct IRQ_queue_t {
170 uint32_t queue[BF_WIDTH(MAX_IRQ)];
171 int next;
172 int priority;
173} IRQ_queue_t;
174
175typedef struct IRQ_src_t {
176 uint32_t ipvp; /* IRQ vector/priority register */
177 uint32_t ide; /* IRQ destination register */
178 int type;
179 int last_cpu;
611493d9 180 int pending; /* TRUE if IRQ is pending */
dbda808a
FB		 181} IRQ_src_t;
182
183enum IPVP_bits {
184 IPVP_MASK = 31,
185 IPVP_ACTIVITY = 30,
186 IPVP_MODE = 29,
187 IPVP_POLARITY = 23,
188 IPVP_SENSE = 22,
189};
190#define IPVP_PRIORITY_MASK (0x1F << 16)
611493d9 191#define IPVP_PRIORITY(_ipvpr_) ((int)(((_ipvpr_) & IPVP_PRIORITY_MASK) >> 16))
dbda808a
FB		 192#define IPVP_VECTOR_MASK ((1 << VECTOR_BITS) - 1)
193#define IPVP_VECTOR(_ipvpr_) ((_ipvpr_) & IPVP_VECTOR_MASK)
194
195typedef struct IRQ_dst_t {
b7169916 196 uint32_t tfrr;
dbda808a
FB		 197 uint32_t pctp; /* CPU current task priority */
198 uint32_t pcsr; /* CPU sensitivity register */
199 IRQ_queue_t raised;
200 IRQ_queue_t servicing;
e9df014c 201 qemu_irq *irqs;
dbda808a
FB		 202} IRQ_dst_t;
203
d537cf6c 204typedef struct openpic_t {
dbda808a 205 PCIDevice pci_dev;
91d848eb 206 int mem_index;
dbda808a
FB		 207 /* Global registers */
208 uint32_t frep; /* Feature reporting register */
209 uint32_t glbc; /* Global configuration register */
210 uint32_t micr; /* MPIC interrupt configuration register */
211 uint32_t veni; /* Vendor identification register */
e9df014c 212 uint32_t pint; /* Processor initialization register */
dbda808a
FB		 213 uint32_t spve; /* Spurious vector register */
214 uint32_t tifr; /* Timer frequency reporting register */
215 /* Source registers */
216 IRQ_src_t src[MAX_IRQ];
217 /* Local registers per output pin */
218 IRQ_dst_t dst[MAX_CPU];
219 int nb_cpus;
220 /* Timer registers */
221 struct {
222 uint32_t ticc; /* Global timer current count register */
223 uint32_t tibc; /* Global timer base count register */
224 } timers[MAX_TMR];
225#if MAX_DBL > 0
226 /* Doorbell registers */
227 uint32_t dar; /* Doorbell activate register */
228 struct {
229 uint32_t dmr; /* Doorbell messaging register */
230 } doorbells[MAX_DBL];
231#endif
232#if MAX_MBX > 0
233 /* Mailbox registers */
234 struct {
235 uint32_t mbr; /* Mailbox register */
236 } mailboxes[MAX_MAILBOXES];
237#endif
e9df014c
JM		 238 /* IRQ out is used when in bypass mode (not implemented) */
239 qemu_irq irq_out;
b7169916
AJ		 240 int max_irq;
241 int irq_ipi0;
242 int irq_tim0;
243 int need_swap;
244 void (*reset) (void *);
245 void (*irq_raise) (struct openpic_t *, int, IRQ_src_t *);
d537cf6c 246} openpic_t;
dbda808a 247
b7169916
AJ		 248static inline uint32_t openpic_swap32(openpic_t *opp, uint32_t val)
249{
250 if (opp->need_swap)
251 return bswap32(val);
252
253 return val;
254}
255
dbda808a
FB		 256static inline void IRQ_setbit (IRQ_queue_t *q, int n_IRQ)
257{
258 set_bit(q->queue, n_IRQ);
259}
260
261static inline void IRQ_resetbit (IRQ_queue_t *q, int n_IRQ)
262{
263 reset_bit(q->queue, n_IRQ);
264}
265
266static inline int IRQ_testbit (IRQ_queue_t *q, int n_IRQ)
267{
268 return test_bit(q->queue, n_IRQ);
269}
270
271static void IRQ_check (openpic_t *opp, IRQ_queue_t *q)
272{
273 int next, i;
274 int priority;
275
276 next = -1;
277 priority = -1;
b7169916 278 for (i = 0; i < opp->max_irq; i++) {
dbda808a 279 if (IRQ_testbit(q, i)) {
5fafdf24 280 DPRINTF("IRQ_check: irq %d set ipvp_pr=%d pr=%d\n",
611493d9 281 i, IPVP_PRIORITY(opp->src[i].ipvp), priority);
dbda808a
FB		 282 if (IPVP_PRIORITY(opp->src[i].ipvp) > priority) {
283 next = i;
284 priority = IPVP_PRIORITY(opp->src[i].ipvp);
285 }
286 }
287 }
288 q->next = next;
289 q->priority = priority;
290}
291
292static int IRQ_get_next (openpic_t *opp, IRQ_queue_t *q)
293{
294 if (q->next == -1) {
611493d9 295 /* XXX: optimize */
dbda808a
FB		 296 IRQ_check(opp, q);
297 }
298
299 return q->next;
300}
301
302static void IRQ_local_pipe (openpic_t *opp, int n_CPU, int n_IRQ)
303{
304 IRQ_dst_t *dst;
305 IRQ_src_t *src;
306 int priority;
307
308 dst = &opp->dst[n_CPU];
309 src = &opp->src[n_IRQ];
310 priority = IPVP_PRIORITY(src->ipvp);
311 if (priority <= dst->pctp) {
312 /* Too low priority */
e9df014c
JM		 313 DPRINTF("%s: IRQ %d has too low priority on CPU %d\n",
314 __func__, n_IRQ, n_CPU);
dbda808a
FB		 315 return;
316 }
317 if (IRQ_testbit(&dst->raised, n_IRQ)) {
318 /* Interrupt miss */
e9df014c
JM		 319 DPRINTF("%s: IRQ %d was missed on CPU %d\n",
320 __func__, n_IRQ, n_CPU);
dbda808a
FB		 321 return;
322 }
323 set_bit(&src->ipvp, IPVP_ACTIVITY);
324 IRQ_setbit(&dst->raised, n_IRQ);
e9df014c
JM		 325 if (priority < dst->raised.priority) {
326 /* An higher priority IRQ is already raised */
327 DPRINTF("%s: IRQ %d is hidden by raised IRQ %d on CPU %d\n",
328 __func__, n_IRQ, dst->raised.next, n_CPU);
329 return;
330 }
331 IRQ_get_next(opp, &dst->raised);
332 if (IRQ_get_next(opp, &dst->servicing) != -1 &&
24865167 333 priority <= dst->servicing.priority) {
e9df014c
JM		 334 DPRINTF("%s: IRQ %d is hidden by servicing IRQ %d on CPU %d\n",
335 __func__, n_IRQ, dst->servicing.next, n_CPU);
336 /* Already servicing a higher priority IRQ */
337 return;
dbda808a 338 }
e9df014c 339 DPRINTF("Raise OpenPIC INT output cpu %d irq %d\n", n_CPU, n_IRQ);
b7169916 340 opp->irq_raise(opp, n_CPU, src);
dbda808a
FB		 341}
342
611493d9
FB		 343/* update pic state because registers for n_IRQ have changed value */
344static void openpic_update_irq(openpic_t *opp, int n_IRQ)
dbda808a
FB		 345{
346 IRQ_src_t *src;
347 int i;
348
349 src = &opp->src[n_IRQ];
611493d9
FB		 350
351 if (!src->pending) {
352 /* no irq pending */
e9df014c 353 DPRINTF("%s: IRQ %d is not pending\n", __func__, n_IRQ);
611493d9
FB		 354 return;
355 }
356 if (test_bit(&src->ipvp, IPVP_MASK)) {
dbda808a 357 /* Interrupt source is disabled */
e9df014c 358 DPRINTF("%s: IRQ %d is disabled\n", __func__, n_IRQ);
dbda808a
FB		 359 return;
360 }
361 if (IPVP_PRIORITY(src->ipvp) == 0) {
362 /* Priority set to zero */
e9df014c 363 DPRINTF("%s: IRQ %d has 0 priority\n", __func__, n_IRQ);
dbda808a
FB		 364 return;
365 }
611493d9
FB		 366 if (test_bit(&src->ipvp, IPVP_ACTIVITY)) {
367 /* IRQ already active */
e9df014c 368 DPRINTF("%s: IRQ %d is already active\n", __func__, n_IRQ);
611493d9
FB		 369 return;
370 }
dbda808a
FB		 371 if (src->ide == 0x00000000) {
372 /* No target */
e9df014c 373 DPRINTF("%s: IRQ %d has no target\n", __func__, n_IRQ);
dbda808a
FB		 374 return;
375 }
611493d9 376
e9df014c
JM		 377 if (src->ide == (1 << src->last_cpu)) {
378 /* Only one CPU is allowed to receive this IRQ */
379 IRQ_local_pipe(opp, src->last_cpu, n_IRQ);
380 } else if (!test_bit(&src->ipvp, IPVP_MODE)) {
611493d9
FB		 381 /* Directed delivery mode */
382 for (i = 0; i < opp->nb_cpus; i++) {
383 if (test_bit(&src->ide, i))
384 IRQ_local_pipe(opp, i, n_IRQ);
385 }
dbda808a 386 } else {
611493d9 387 /* Distributed delivery mode */
e9df014c
JM		 388 for (i = src->last_cpu + 1; i != src->last_cpu; i++) {
389 if (i == opp->nb_cpus)
611493d9
FB		 390 i = 0;
391 if (test_bit(&src->ide, i)) {
392 IRQ_local_pipe(opp, i, n_IRQ);
393 src->last_cpu = i;
394 break;
395 }
396 }
397 }
398}
399
d537cf6c 400static void openpic_set_irq(void *opaque, int n_IRQ, int level)
611493d9 401{
54fa5af5 402 openpic_t *opp = opaque;
611493d9
FB		 403 IRQ_src_t *src;
404
405 src = &opp->src[n_IRQ];
5fafdf24 406 DPRINTF("openpic: set irq %d = %d ipvp=%08x\n",
611493d9
FB		 407 n_IRQ, level, src->ipvp);
408 if (test_bit(&src->ipvp, IPVP_SENSE)) {
409 /* level-sensitive irq */
410 src->pending = level;
411 if (!level)
412 reset_bit(&src->ipvp, IPVP_ACTIVITY);
413 } else {
414 /* edge-sensitive irq */
415 if (level)
416 src->pending = 1;
dbda808a 417 }
611493d9 418 openpic_update_irq(opp, n_IRQ);
dbda808a
FB		 419}
420
67b55785 421static void openpic_reset (void *opaque)
dbda808a 422{
67b55785 423 openpic_t *opp = (openpic_t *)opaque;
dbda808a
FB		 424 int i;
425
426 opp->glbc = 0x80000000;
f8407028 427 /* Initialise controller registers */
b7169916 428 opp->frep = ((OPENPIC_EXT_IRQ - 1) << 16) | ((MAX_CPU - 1) << 8) | VID;
dbda808a 429 opp->veni = VENI;
e9df014c 430 opp->pint = 0x00000000;
dbda808a
FB		 431 opp->spve = 0x000000FF;
432 opp->tifr = 0x003F7A00;
433 /* ? */
434 opp->micr = 0x00000000;
435 /* Initialise IRQ sources */
b7169916 436 for (i = 0; i < opp->max_irq; i++) {
dbda808a
FB		 437 opp->src[i].ipvp = 0xA0000000;
438 opp->src[i].ide = 0x00000000;
439 }
440 /* Initialise IRQ destinations */
e9df014c 441 for (i = 0; i < MAX_CPU; i++) {
dbda808a
FB		 442 opp->dst[i].pctp = 0x0000000F;
443 opp->dst[i].pcsr = 0x00000000;
444 memset(&opp->dst[i].raised, 0, sizeof(IRQ_queue_t));
445 memset(&opp->dst[i].servicing, 0, sizeof(IRQ_queue_t));
446 }
447 /* Initialise timers */
448 for (i = 0; i < MAX_TMR; i++) {
449 opp->timers[i].ticc = 0x00000000;
450 opp->timers[i].tibc = 0x80000000;
451 }
452 /* Initialise doorbells */
453#if MAX_DBL > 0
454 opp->dar = 0x00000000;
455 for (i = 0; i < MAX_DBL; i++) {
456 opp->doorbells[i].dmr = 0x00000000;
457 }
458#endif
459 /* Initialise mailboxes */
460#if MAX_MBX > 0
461 for (i = 0; i < MAX_MBX; i++) { /* ? */
462 opp->mailboxes[i].mbr = 0x00000000;
463 }
464#endif
465 /* Go out of RESET state */
466 opp->glbc = 0x00000000;
467}
468
469static inline uint32_t read_IRQreg (openpic_t *opp, int n_IRQ, uint32_t reg)
470{
471 uint32_t retval;
472
473 switch (reg) {
474 case IRQ_IPVP:
475 retval = opp->src[n_IRQ].ipvp;
476 break;
477 case IRQ_IDE:
478 retval = opp->src[n_IRQ].ide;
479 break;
480 }
481
482 return retval;
483}
484
485static inline void write_IRQreg (openpic_t *opp, int n_IRQ,
486 uint32_t reg, uint32_t val)
487{
488 uint32_t tmp;
489
490 switch (reg) {
491 case IRQ_IPVP:
611493d9
FB		 492 /* NOTE: not fully accurate for special IRQs, but simple and
493 sufficient */
494 /* ACTIVITY bit is read-only */
5fafdf24 495 opp->src[n_IRQ].ipvp =
611493d9
FB		 496 (opp->src[n_IRQ].ipvp & 0x40000000) |
497 (val & 0x800F00FF);
498 openpic_update_irq(opp, n_IRQ);
5fafdf24 499 DPRINTF("Set IPVP %d to 0x%08x -> 0x%08x\n",
611493d9 500 n_IRQ, val, opp->src[n_IRQ].ipvp);
dbda808a
FB		 501 break;
502 case IRQ_IDE:
503 tmp = val & 0xC0000000;
504 tmp |= val & ((1 << MAX_CPU) - 1);
505 opp->src[n_IRQ].ide = tmp;
506 DPRINTF("Set IDE %d to 0x%08x\n", n_IRQ, opp->src[n_IRQ].ide);
507 break;
508 }
509}
510
511#if 0 // Code provision for Intel model
512#if MAX_DBL > 0
513static uint32_t read_doorbell_register (openpic_t *opp,
514 int n_dbl, uint32_t offset)
515{
516 uint32_t retval;
517
518 switch (offset) {
519 case DBL_IPVP_OFFSET:
520 retval = read_IRQreg(opp, IRQ_DBL0 + n_dbl, IRQ_IPVP);
521 break;
522 case DBL_IDE_OFFSET:
523 retval = read_IRQreg(opp, IRQ_DBL0 + n_dbl, IRQ_IDE);
524 break;
525 case DBL_DMR_OFFSET:
526 retval = opp->doorbells[n_dbl].dmr;
527 break;
528 }
529
530 return retval;
531}
3b46e624 532
dbda808a
FB		 533static void write_doorbell_register (penpic_t *opp, int n_dbl,
534 uint32_t offset, uint32_t value)
535{
536 switch (offset) {
537 case DBL_IVPR_OFFSET:
538 write_IRQreg(opp, IRQ_DBL0 + n_dbl, IRQ_IPVP, value);
539 break;
540 case DBL_IDE_OFFSET:
541 write_IRQreg(opp, IRQ_DBL0 + n_dbl, IRQ_IDE, value);
542 break;
543 case DBL_DMR_OFFSET:
544 opp->doorbells[n_dbl].dmr = value;
545 break;
546 }
547}
548#endif
549
550#if MAX_MBX > 0
551static uint32_t read_mailbox_register (openpic_t *opp,
552 int n_mbx, uint32_t offset)
553{
554 uint32_t retval;
555
556 switch (offset) {
557 case MBX_MBR_OFFSET:
558 retval = opp->mailboxes[n_mbx].mbr;
559 break;
560 case MBX_IVPR_OFFSET:
561 retval = read_IRQreg(opp, IRQ_MBX0 + n_mbx, IRQ_IPVP);
562 break;
563 case MBX_DMR_OFFSET:
564 retval = read_IRQreg(opp, IRQ_MBX0 + n_mbx, IRQ_IDE);
565 break;
566 }
567
568 return retval;
569}
570
571static void write_mailbox_register (openpic_t *opp, int n_mbx,
572 uint32_t address, uint32_t value)
573{
574 switch (offset) {
575 case MBX_MBR_OFFSET:
576 opp->mailboxes[n_mbx].mbr = value;
577 break;
578 case MBX_IVPR_OFFSET:
579 write_IRQreg(opp, IRQ_MBX0 + n_mbx, IRQ_IPVP, value);
580 break;
581 case MBX_DMR_OFFSET:
582 write_IRQreg(opp, IRQ_MBX0 + n_mbx, IRQ_IDE, value);
583 break;
584 }
585}
586#endif
587#endif /* 0 : Code provision for Intel model */
588
b7169916 589static void openpic_gbl_write (void *opaque, target_phys_addr_t addr, uint32_t val)
dbda808a
FB		 590{
591 openpic_t *opp = opaque;
e9df014c
JM		 592 IRQ_dst_t *dst;
593 int idx;
dbda808a
FB		 594
595 DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
596 if (addr & 0xF)
597 return;
b7169916
AJ		 598#if defined TARGET_WORDS_BIGENDIAN
599 val = openpic_swap32(opp, val);
dbda808a
FB		 600#endif
601 addr &= 0xFF;
602 switch (addr) {
603 case 0x00: /* FREP */
604 break;
605 case 0x20: /* GLBC */
b7169916
AJ		 606 if (val & 0x80000000 && opp->reset)
607 opp->reset(opp);
dbda808a
FB		 608 opp->glbc = val & ~0x80000000;
609 break;
610 case 0x80: /* VENI */
611 break;
612 case 0x90: /* PINT */
e9df014c
JM		 613 for (idx = 0; idx < opp->nb_cpus; idx++) {
614 if ((val & (1 << idx)) && !(opp->pint & (1 << idx))) {
615 DPRINTF("Raise OpenPIC RESET output for CPU %d\n", idx);
616 dst = &opp->dst[idx];
617 qemu_irq_raise(dst->irqs[OPENPIC_OUTPUT_RESET]);
618 } else if (!(val & (1 << idx)) && (opp->pint & (1 << idx))) {
619 DPRINTF("Lower OpenPIC RESET output for CPU %d\n", idx);
620 dst = &opp->dst[idx];
621 qemu_irq_lower(dst->irqs[OPENPIC_OUTPUT_RESET]);
622 }
dbda808a 623 }
e9df014c 624 opp->pint = val;
dbda808a
FB		 625 break;
626#if MAX_IPI > 0
627 case 0xA0: /* IPI_IPVP */
628 case 0xB0:
629 case 0xC0:
630 case 0xD0:
631 {
632 int idx;
633 idx = (addr - 0xA0) >> 4;
b7169916 634 write_IRQreg(opp, opp->irq_ipi0 + idx, IRQ_IPVP, val);
dbda808a
FB		 635 }
636 break;
637#endif
638 case 0xE0: /* SPVE */
639 opp->spve = val & 0x000000FF;
640 break;
641 case 0xF0: /* TIFR */
642 opp->tifr = val;
643 break;
644 default:
645 break;
646 }
647}
648
b7169916 649static uint32_t openpic_gbl_read (void *opaque, target_phys_addr_t addr)
dbda808a
FB		 650{
651 openpic_t *opp = opaque;
652 uint32_t retval;
653
654 DPRINTF("%s: addr %08x\n", __func__, addr);
655 retval = 0xFFFFFFFF;
656 if (addr & 0xF)
657 return retval;
658 addr &= 0xFF;
659 switch (addr) {
660 case 0x00: /* FREP */
661 retval = opp->frep;
662 break;
663 case 0x20: /* GLBC */
664 retval = opp->glbc;
665 break;
666 case 0x80: /* VENI */
667 retval = opp->veni;
668 break;
669 case 0x90: /* PINT */
670 retval = 0x00000000;
671 break;
672#if MAX_IPI > 0
673 case 0xA0: /* IPI_IPVP */
674 case 0xB0:
675 case 0xC0:
676 case 0xD0:
677 {
678 int idx;
679 idx = (addr - 0xA0) >> 4;
b7169916 680 retval = read_IRQreg(opp, opp->irq_ipi0 + idx, IRQ_IPVP);
dbda808a
FB		 681 }
682 break;
683#endif
684 case 0xE0: /* SPVE */
685 retval = opp->spve;
686 break;
687 case 0xF0: /* TIFR */
688 retval = opp->tifr;
689 break;
690 default:
691 break;
692 }
693 DPRINTF("%s: => %08x\n", __func__, retval);
b7169916
AJ		 694#if defined TARGET_WORDS_BIGENDIAN
695 retval = openpic_swap32(opp, retval);
dbda808a
FB		 696#endif
697
698 return retval;
699}
700
701static void openpic_timer_write (void *opaque, uint32_t addr, uint32_t val)
702{
703 openpic_t *opp = opaque;
704 int idx;
705
706 DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
707 if (addr & 0xF)
708 return;
b7169916
AJ		 709#if defined TARGET_WORDS_BIGENDIAN
710 val = openpic_swap32(opp, val);
dbda808a
FB		 711#endif
712 addr -= 0x1100;
713 addr &= 0xFFFF;
714 idx = (addr & 0xFFF0) >> 6;
715 addr = addr & 0x30;
716 switch (addr) {
717 case 0x00: /* TICC */
718 break;
719 case 0x10: /* TIBC */
720 if ((opp->timers[idx].ticc & 0x80000000) != 0 &&
8adbc566 721 (val & 0x80000000) == 0 &&
dbda808a
FB		 722 (opp->timers[idx].tibc & 0x80000000) != 0)
723 opp->timers[idx].ticc &= ~0x80000000;
724 opp->timers[idx].tibc = val;
725 break;
726 case 0x20: /* TIVP */
b7169916 727 write_IRQreg(opp, opp->irq_tim0 + idx, IRQ_IPVP, val);
dbda808a
FB		 728 break;
729 case 0x30: /* TIDE */
b7169916 730 write_IRQreg(opp, opp->irq_tim0 + idx, IRQ_IDE, val);
dbda808a
FB		 731 break;
732 }
733}
734
735static uint32_t openpic_timer_read (void *opaque, uint32_t addr)
736{
737 openpic_t *opp = opaque;
738 uint32_t retval;
739 int idx;
740
741 DPRINTF("%s: addr %08x\n", __func__, addr);
742 retval = 0xFFFFFFFF;
743 if (addr & 0xF)
744 return retval;
745 addr -= 0x1100;
746 addr &= 0xFFFF;
747 idx = (addr & 0xFFF0) >> 6;
748 addr = addr & 0x30;
749 switch (addr) {
750 case 0x00: /* TICC */
751 retval = opp->timers[idx].ticc;
752 break;
753 case 0x10: /* TIBC */
754 retval = opp->timers[idx].tibc;
755 break;
756 case 0x20: /* TIPV */
b7169916 757 retval = read_IRQreg(opp, opp->irq_tim0 + idx, IRQ_IPVP);
dbda808a
FB		 758 break;
759 case 0x30: /* TIDE */
b7169916 760 retval = read_IRQreg(opp, opp->irq_tim0 + idx, IRQ_IDE);
dbda808a
FB		 761 break;
762 }
763 DPRINTF("%s: => %08x\n", __func__, retval);
b7169916
AJ		 764#if defined TARGET_WORDS_BIGENDIAN
765 retval = openpic_swap32(opp, retval);
dbda808a
FB		 766#endif
767
768 return retval;
769}
770
771static void openpic_src_write (void *opaque, uint32_t addr, uint32_t val)
772{
773 openpic_t *opp = opaque;
774 int idx;
775
776 DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
777 if (addr & 0xF)
778 return;
b7169916
AJ		 779#if defined TARGET_WORDS_BIGENDIAN
780 val = openpic_swap32(opp, val);
dbda808a
FB		 781#endif
782 addr = addr & 0xFFF0;
783 idx = addr >> 5;
784 if (addr & 0x10) {
785 /* EXDE / IFEDE / IEEDE */
786 write_IRQreg(opp, idx, IRQ_IDE, val);
787 } else {
788 /* EXVP / IFEVP / IEEVP */
789 write_IRQreg(opp, idx, IRQ_IPVP, val);
790 }
791}
792
793static uint32_t openpic_src_read (void *opaque, uint32_t addr)
794{
795 openpic_t *opp = opaque;
796 uint32_t retval;
797 int idx;
798
799 DPRINTF("%s: addr %08x\n", __func__, addr);
800 retval = 0xFFFFFFFF;
801 if (addr & 0xF)
802 return retval;
803 addr = addr & 0xFFF0;
804 idx = addr >> 5;
805 if (addr & 0x10) {
806 /* EXDE / IFEDE / IEEDE */
807 retval = read_IRQreg(opp, idx, IRQ_IDE);
808 } else {
809 /* EXVP / IFEVP / IEEVP */
810 retval = read_IRQreg(opp, idx, IRQ_IPVP);
811 }
812 DPRINTF("%s: => %08x\n", __func__, retval);
b7169916
AJ		 813#if defined TARGET_WORDS_BIGENDIAN
814 retval = openpic_swap32(opp, retval);
dbda808a
FB		 815#endif
816
817 return retval;
818}
819
b7169916 820static void openpic_cpu_write (void *opaque, target_phys_addr_t addr, uint32_t val)
dbda808a
FB		 821{
822 openpic_t *opp = opaque;
823 IRQ_src_t *src;
824 IRQ_dst_t *dst;
e9df014c 825 int idx, s_IRQ, n_IRQ;
dbda808a
FB		 826
827 DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
828 if (addr & 0xF)
829 return;
b7169916
AJ		 830#if defined TARGET_WORDS_BIGENDIAN
831 val = openpic_swap32(opp, val);
dbda808a
FB		 832#endif
833 addr &= 0x1FFF0;
834 idx = addr / 0x1000;
835 dst = &opp->dst[idx];
836 addr &= 0xFF0;
837 switch (addr) {
838#if MAX_IPI > 0
839 case 0x40: /* PIPD */
840 case 0x50:
841 case 0x60:
842 case 0x70:
843 idx = (addr - 0x40) >> 4;
b7169916
AJ		 844 write_IRQreg(opp, opp->irq_ipi0 + idx, IRQ_IDE, val);
845 openpic_set_irq(opp, opp->irq_ipi0 + idx, 1);
846 openpic_set_irq(opp, opp->irq_ipi0 + idx, 0);
dbda808a
FB		 847 break;
848#endif
849 case 0x80: /* PCTP */
850 dst->pctp = val & 0x0000000F;
851 break;
852 case 0x90: /* WHOAMI */
853 /* Read-only register */
854 break;
855 case 0xA0: /* PIAC */
856 /* Read-only register */
857 break;
858 case 0xB0: /* PEOI */
859 DPRINTF("PEOI\n");
e9df014c
JM		 860 s_IRQ = IRQ_get_next(opp, &dst->servicing);
861 IRQ_resetbit(&dst->servicing, s_IRQ);
dbda808a 862 dst->servicing.next = -1;
dbda808a 863 /* Set up next servicing IRQ */
e9df014c
JM		 864 s_IRQ = IRQ_get_next(opp, &dst->servicing);
865 /* Check queued interrupts. */
866 n_IRQ = IRQ_get_next(opp, &dst->raised);
867 src = &opp->src[n_IRQ];
868 if (n_IRQ != -1 &&
869 (s_IRQ == -1 ||
870 IPVP_PRIORITY(src->ipvp) > dst->servicing.priority)) {
871 DPRINTF("Raise OpenPIC INT output cpu %d irq %d\n",
872 idx, n_IRQ);
b7169916 873 opp->irq_raise(opp, idx, src);
e9df014c 874 }
dbda808a
FB		 875 break;
876 default:
877 break;
878 }
879}
880
b7169916 881static uint32_t openpic_cpu_read (void *opaque, target_phys_addr_t addr)
dbda808a
FB		 882{
883 openpic_t *opp = opaque;
884 IRQ_src_t *src;
885 IRQ_dst_t *dst;
886 uint32_t retval;
887 int idx, n_IRQ;
3b46e624 888
dbda808a
FB		 889 DPRINTF("%s: addr %08x\n", __func__, addr);
890 retval = 0xFFFFFFFF;
891 if (addr & 0xF)
892 return retval;
893 addr &= 0x1FFF0;
894 idx = addr / 0x1000;
895 dst = &opp->dst[idx];
896 addr &= 0xFF0;
897 switch (addr) {
898 case 0x80: /* PCTP */
899 retval = dst->pctp;
900 break;
901 case 0x90: /* WHOAMI */
902 retval = idx;
903 break;
904 case 0xA0: /* PIAC */
e9df014c
JM		 905 DPRINTF("Lower OpenPIC INT output\n");
906 qemu_irq_lower(dst->irqs[OPENPIC_OUTPUT_INT]);
dbda808a
FB		 907 n_IRQ = IRQ_get_next(opp, &dst->raised);
908 DPRINTF("PIAC: irq=%d\n", n_IRQ);
909 if (n_IRQ == -1) {
910 /* No more interrupt pending */
e9df014c 911 retval = IPVP_VECTOR(opp->spve);
dbda808a
FB		 912 } else {
913 src = &opp->src[n_IRQ];
914 if (!test_bit(&src->ipvp, IPVP_ACTIVITY) ||
915 !(IPVP_PRIORITY(src->ipvp) > dst->pctp)) {
916 /* - Spurious level-sensitive IRQ
917 * - Priorities has been changed
918 * and the pending IRQ isn't allowed anymore
919 */
920 reset_bit(&src->ipvp, IPVP_ACTIVITY);
921 retval = IPVP_VECTOR(opp->spve);
922 } else {
923 /* IRQ enter servicing state */
924 IRQ_setbit(&dst->servicing, n_IRQ);
925 retval = IPVP_VECTOR(src->ipvp);
926 }
927 IRQ_resetbit(&dst->raised, n_IRQ);
928 dst->raised.next = -1;
611493d9
FB		 929 if (!test_bit(&src->ipvp, IPVP_SENSE)) {
930 /* edge-sensitive IRQ */
dbda808a 931 reset_bit(&src->ipvp, IPVP_ACTIVITY);
611493d9
FB		 932 src->pending = 0;
933 }
dbda808a
FB		 934 }
935 break;
936 case 0xB0: /* PEOI */
937 retval = 0;
938 break;
939#if MAX_IPI > 0
940 case 0x40: /* IDE */
941 case 0x50:
942 idx = (addr - 0x40) >> 4;
b7169916 943 retval = read_IRQreg(opp, opp->irq_ipi0 + idx, IRQ_IDE);
dbda808a
FB		 944 break;
945#endif
946 default:
947 break;
948 }
949 DPRINTF("%s: => %08x\n", __func__, retval);
b7169916
AJ		 950#if defined TARGET_WORDS_BIGENDIAN
951 retval = openpic_swap32(opp, retval);
dbda808a
FB		 952#endif
953
954 return retval;
955}
956
957static void openpic_buggy_write (void *opaque,
958 target_phys_addr_t addr, uint32_t val)
959{
960 printf("Invalid OPENPIC write access !\n");
961}
962
963static uint32_t openpic_buggy_read (void *opaque, target_phys_addr_t addr)
964{
965 printf("Invalid OPENPIC read access !\n");
966
967 return -1;
968}
969
970static void openpic_writel (void *opaque,
971 target_phys_addr_t addr, uint32_t val)
972{
973 openpic_t *opp = opaque;
974
975 addr &= 0x3FFFF;
611493d9 976 DPRINTF("%s: offset %08x val: %08x\n", __func__, (int)addr, val);
dbda808a
FB		 977 if (addr < 0x1100) {
978 /* Global registers */
979 openpic_gbl_write(opp, addr, val);
980 } else if (addr < 0x10000) {
981 /* Timers registers */
982 openpic_timer_write(opp, addr, val);
983 } else if (addr < 0x20000) {
984 /* Source registers */
985 openpic_src_write(opp, addr, val);
986 } else {
987 /* CPU registers */
988 openpic_cpu_write(opp, addr, val);
989 }
990}
991
992static uint32_t openpic_readl (void *opaque,target_phys_addr_t addr)
993{
994 openpic_t *opp = opaque;
995 uint32_t retval;
996
997 addr &= 0x3FFFF;
611493d9 998 DPRINTF("%s: offset %08x\n", __func__, (int)addr);
dbda808a
FB		 999 if (addr < 0x1100) {
1000 /* Global registers */
1001 retval = openpic_gbl_read(opp, addr);
1002 } else if (addr < 0x10000) {
1003 /* Timers registers */
1004 retval = openpic_timer_read(opp, addr);
1005 } else if (addr < 0x20000) {
1006 /* Source registers */
1007 retval = openpic_src_read(opp, addr);
1008 } else {
1009 /* CPU registers */
1010 retval = openpic_cpu_read(opp, addr);
1011 }
1012
1013 return retval;
1014}
1015
1016static CPUWriteMemoryFunc *openpic_write[] = {
1017 &openpic_buggy_write,
1018 &openpic_buggy_write,
1019 &openpic_writel,
1020};
1021
1022static CPUReadMemoryFunc *openpic_read[] = {
1023 &openpic_buggy_read,
1024 &openpic_buggy_read,
1025 &openpic_readl,
1026};
1027
5fafdf24 1028static void openpic_map(PCIDevice *pci_dev, int region_num,
dbda808a
FB		 1029 uint32_t addr, uint32_t size, int type)
1030{
1031 openpic_t *opp;
dbda808a
FB		 1032
1033 DPRINTF("Map OpenPIC\n");
1034 opp = (openpic_t *)pci_dev;
1035 /* Global registers */
1036 DPRINTF("Register OPENPIC gbl %08x => %08x\n",
1037 addr + 0x1000, addr + 0x1000 + 0x100);
1038 /* Timer registers */
1039 DPRINTF("Register OPENPIC timer %08x => %08x\n",
1040 addr + 0x1100, addr + 0x1100 + 0x40 * MAX_TMR);
1041 /* Interrupt source registers */
1042 DPRINTF("Register OPENPIC src %08x => %08x\n",
b7169916 1043 addr + 0x10000, addr + 0x10000 + 0x20 * (OPENPIC_EXT_IRQ + 2));
dbda808a
FB		 1044 /* Per CPU registers */
1045 DPRINTF("Register OPENPIC dst %08x => %08x\n",
1046 addr + 0x20000, addr + 0x20000 + 0x1000 * MAX_CPU);
91d848eb 1047 cpu_register_physical_memory(addr, 0x40000, opp->mem_index);
dbda808a
FB		 1048#if 0 // Don't implement ISU for now
1049 opp_io_memory = cpu_register_io_memory(0, openpic_src_read,
1050 openpic_src_write);
1051 cpu_register_physical_memory(isu_base, 0x20 * (EXT_IRQ + 2),
1052 opp_io_memory);
1053#endif
1054}
1055
67b55785
BS		 1056static void openpic_save_IRQ_queue(QEMUFile* f, IRQ_queue_t *q)
1057{
1058 unsigned int i;
1059
1060 for (i = 0; i < BF_WIDTH(MAX_IRQ); i++)
1061 qemu_put_be32s(f, &q->queue[i]);
1062
1063 qemu_put_sbe32s(f, &q->next);
1064 qemu_put_sbe32s(f, &q->priority);
1065}
1066
1067static void openpic_save(QEMUFile* f, void *opaque)
1068{
1069 openpic_t *opp = (openpic_t *)opaque;
1070 unsigned int i;
1071
1072 qemu_put_be32s(f, &opp->frep);
1073 qemu_put_be32s(f, &opp->glbc);
1074 qemu_put_be32s(f, &opp->micr);
1075 qemu_put_be32s(f, &opp->veni);
1076 qemu_put_be32s(f, &opp->pint);
1077 qemu_put_be32s(f, &opp->spve);
1078 qemu_put_be32s(f, &opp->tifr);
1079
b7169916 1080 for (i = 0; i < opp->max_irq; i++) {
67b55785
BS		 1081 qemu_put_be32s(f, &opp->src[i].ipvp);
1082 qemu_put_be32s(f, &opp->src[i].ide);
1083 qemu_put_sbe32s(f, &opp->src[i].type);
1084 qemu_put_sbe32s(f, &opp->src[i].last_cpu);
1085 qemu_put_sbe32s(f, &opp->src[i].pending);
1086 }
1087
b7169916
AJ		 1088 qemu_put_sbe32s(f, &opp->nb_cpus);
1089
1090 for (i = 0; i < opp->nb_cpus; i++) {
1091 qemu_put_be32s(f, &opp->dst[i].tfrr);
67b55785
BS		 1092 qemu_put_be32s(f, &opp->dst[i].pctp);
1093 qemu_put_be32s(f, &opp->dst[i].pcsr);
1094 openpic_save_IRQ_queue(f, &opp->dst[i].raised);
1095 openpic_save_IRQ_queue(f, &opp->dst[i].servicing);
1096 }
1097
67b55785
BS		 1098 for (i = 0; i < MAX_TMR; i++) {
1099 qemu_put_be32s(f, &opp->timers[i].ticc);
1100 qemu_put_be32s(f, &opp->timers[i].tibc);
1101 }
1102
1103#if MAX_DBL > 0
1104 qemu_put_be32s(f, &opp->dar);
1105
1106 for (i = 0; i < MAX_DBL; i++) {
1107 qemu_put_be32s(f, &opp->doorbells[i].dmr);
1108 }
1109#endif
1110
1111#if MAX_MBX > 0
1112 for (i = 0; i < MAX_MAILBOXES; i++) {
1113 qemu_put_be32s(f, &opp->mailboxes[i].mbr);
1114 }
1115#endif
1116
1117 pci_device_save(&opp->pci_dev, f);
1118}
1119
1120static void openpic_load_IRQ_queue(QEMUFile* f, IRQ_queue_t *q)
1121{
1122 unsigned int i;
1123
1124 for (i = 0; i < BF_WIDTH(MAX_IRQ); i++)
1125 qemu_get_be32s(f, &q->queue[i]);
1126
1127 qemu_get_sbe32s(f, &q->next);
1128 qemu_get_sbe32s(f, &q->priority);
1129}
1130
1131static int openpic_load(QEMUFile* f, void *opaque, int version_id)
1132{
1133 openpic_t *opp = (openpic_t *)opaque;
1134 unsigned int i;
1135
1136 if (version_id != 1)
1137 return -EINVAL;
1138
1139 qemu_get_be32s(f, &opp->frep);
1140 qemu_get_be32s(f, &opp->glbc);
1141 qemu_get_be32s(f, &opp->micr);
1142 qemu_get_be32s(f, &opp->veni);
1143 qemu_get_be32s(f, &opp->pint);
1144 qemu_get_be32s(f, &opp->spve);
1145 qemu_get_be32s(f, &opp->tifr);
1146
b7169916 1147 for (i = 0; i < opp->max_irq; i++) {
67b55785
BS		 1148 qemu_get_be32s(f, &opp->src[i].ipvp);
1149 qemu_get_be32s(f, &opp->src[i].ide);
1150 qemu_get_sbe32s(f, &opp->src[i].type);
1151 qemu_get_sbe32s(f, &opp->src[i].last_cpu);
1152 qemu_get_sbe32s(f, &opp->src[i].pending);
1153 }
1154
b7169916
AJ		 1155 qemu_get_sbe32s(f, &opp->nb_cpus);
1156
1157 for (i = 0; i < opp->nb_cpus; i++) {
1158 qemu_get_be32s(f, &opp->dst[i].tfrr);
67b55785
BS		 1159 qemu_get_be32s(f, &opp->dst[i].pctp);
1160 qemu_get_be32s(f, &opp->dst[i].pcsr);
1161 openpic_load_IRQ_queue(f, &opp->dst[i].raised);
1162 openpic_load_IRQ_queue(f, &opp->dst[i].servicing);
1163 }
1164
67b55785
BS		 1165 for (i = 0; i < MAX_TMR; i++) {
1166 qemu_get_be32s(f, &opp->timers[i].ticc);
1167 qemu_get_be32s(f, &opp->timers[i].tibc);
1168 }
1169
1170#if MAX_DBL > 0
1171 qemu_get_be32s(f, &opp->dar);
1172
1173 for (i = 0; i < MAX_DBL; i++) {
1174 qemu_get_be32s(f, &opp->doorbells[i].dmr);
1175 }
1176#endif
1177
1178#if MAX_MBX > 0
1179 for (i = 0; i < MAX_MAILBOXES; i++) {
1180 qemu_get_be32s(f, &opp->mailboxes[i].mbr);
1181 }
1182#endif
1183
1184 return pci_device_load(&opp->pci_dev, f);
1185}
1186
b7169916
AJ		 1187static void openpic_irq_raise(openpic_t *opp, int n_CPU, IRQ_src_t *src)
1188{
1189 qemu_irq_raise(opp->dst[n_CPU].irqs[OPENPIC_OUTPUT_INT]);
1190}
1191
e9df014c
JM		 1192qemu_irq *openpic_init (PCIBus *bus, int *pmem_index, int nb_cpus,
1193 qemu_irq **irqs, qemu_irq irq_out)
dbda808a
FB		 1194{
1195 openpic_t *opp;
1196 uint8_t *pci_conf;
1197 int i, m;
3b46e624 1198
dbda808a
FB		 1199 /* XXX: for now, only one CPU is supported */
1200 if (nb_cpus != 1)
1201 return NULL;
91d848eb
FB		 1202 if (bus) {
1203 opp = (openpic_t *)pci_register_device(bus, "OpenPIC", sizeof(openpic_t),
1204 -1, NULL, NULL);
1205 if (opp == NULL)
1206 return NULL;
1207 pci_conf = opp->pci_dev.config;
deb54399 1208 pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_IBM);
4ebcf884 1209 pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_IBM_OPENPIC2);
173a543b 1210 pci_config_set_class(pci_conf, PCI_CLASS_SYSTEM_OTHER); // FIXME?
6407f373 1211 pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type
91d848eb 1212 pci_conf[0x3d] = 0x00; // no interrupt pin
3b46e624 1213
91d848eb
FB		 1214 /* Register I/O spaces */
1215 pci_register_io_region((PCIDevice *)opp, 0, 0x40000,
1216 PCI_ADDRESS_SPACE_MEM, &openpic_map);
1217 } else {
1218 opp = qemu_mallocz(sizeof(openpic_t));
1219 }
91d848eb
FB		 1220 opp->mem_index = cpu_register_io_memory(0, openpic_read,
1221 openpic_write, opp);
3b46e624 1222
91d848eb 1223 // isu_base &= 0xFFFC0000;
dbda808a 1224 opp->nb_cpus = nb_cpus;
b7169916
AJ		 1225 opp->max_irq = OPENPIC_MAX_IRQ;
1226 opp->irq_ipi0 = OPENPIC_IRQ_IPI0;
1227 opp->irq_tim0 = OPENPIC_IRQ_TIM0;
dbda808a 1228 /* Set IRQ types */
b7169916 1229 for (i = 0; i < OPENPIC_EXT_IRQ; i++) {
dbda808a
FB		 1230 opp->src[i].type = IRQ_EXTERNAL;
1231 }
b7169916 1232 for (; i < OPENPIC_IRQ_TIM0; i++) {
dbda808a
FB		 1233 opp->src[i].type = IRQ_SPECIAL;
1234 }
1235#if MAX_IPI > 0
b7169916 1236 m = OPENPIC_IRQ_IPI0;
dbda808a 1237#else
b7169916 1238 m = OPENPIC_IRQ_DBL0;
dbda808a
FB		 1239#endif
1240 for (; i < m; i++) {
1241 opp->src[i].type = IRQ_TIMER;
1242 }
b7169916 1243 for (; i < OPENPIC_MAX_IRQ; i++) {
dbda808a
FB		 1244 opp->src[i].type = IRQ_INTERNAL;
1245 }
7668a27f 1246 for (i = 0; i < nb_cpus; i++)
e9df014c
JM		 1247 opp->dst[i].irqs = irqs[i];
1248 opp->irq_out = irq_out;
b7169916 1249 opp->need_swap = 1;
67b55785 1250
b7169916 1251 register_savevm("openpic", 0, 2, openpic_save, openpic_load, opp);
67b55785 1252 qemu_register_reset(openpic_reset, opp);
b7169916
AJ		 1253
1254 opp->irq_raise = openpic_irq_raise;
1255 opp->reset = openpic_reset;
1256
1257 opp->reset(opp);
91d848eb
FB		 1258 if (pmem_index)
1259 *pmem_index = opp->mem_index;
e9df014c 1260
b7169916
AJ		 1261 return qemu_allocate_irqs(openpic_set_irq, opp, opp->max_irq);
1262}
1263
1264static void mpic_irq_raise(openpic_t *mpp, int n_CPU, IRQ_src_t *src)
1265{
1266 int n_ci = IDR_CI0 - n_CPU;
1267 DPRINTF("%s: cpu:%d irq:%d (testbit idr:%x ci:%d)\n", __func__,
1268 n_CPU, n_IRQ, mpp->src[n_IRQ].ide, n_ci);
1269 if(test_bit(&src->ide, n_ci)) {
1270 qemu_irq_raise(mpp->dst[n_CPU].irqs[OPENPIC_OUTPUT_CINT]);
1271 }
1272 else {
1273 qemu_irq_raise(mpp->dst[n_CPU].irqs[OPENPIC_OUTPUT_INT]);
1274 }
1275}
1276
1277static void mpic_reset (void *opaque)
1278{
1279 openpic_t *mpp = (openpic_t *)opaque;
1280 int i;
1281
1282 mpp->glbc = 0x80000000;
1283 /* Initialise controller registers */
1284 mpp->frep = 0x004f0002;
1285 mpp->veni = VENI;
1286 mpp->pint = 0x00000000;
1287 mpp->spve = 0x0000FFFF;
1288 /* Initialise IRQ sources */
1289 for (i = 0; i < mpp->max_irq; i++) {
1290 mpp->src[i].ipvp = 0x80800000;
1291 mpp->src[i].ide = 0x00000001;
1292 }
1293 /* Initialise IRQ destinations */
1294 for (i = 0; i < MAX_CPU; i++) {
1295 mpp->dst[i].pctp = 0x0000000F;
1296 mpp->dst[i].tfrr = 0x00000000;
1297 memset(&mpp->dst[i].raised, 0, sizeof(IRQ_queue_t));
1298 mpp->dst[i].raised.next = -1;
1299 memset(&mpp->dst[i].servicing, 0, sizeof(IRQ_queue_t));
1300 mpp->dst[i].servicing.next = -1;
1301 }
1302 /* Initialise timers */
1303 for (i = 0; i < MAX_TMR; i++) {
1304 mpp->timers[i].ticc = 0x00000000;
1305 mpp->timers[i].tibc = 0x80000000;
1306 }
1307 /* Go out of RESET state */
1308 mpp->glbc = 0x00000000;
1309}
1310
1311static void mpic_timer_write (void *opaque, target_phys_addr_t addr, uint32_t val)
1312{
1313 openpic_t *mpp = opaque;
1314 int idx, cpu;
1315
1316 DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
1317 if (addr & 0xF)
1318 return;
1319 addr &= 0xFFFF;
1320 cpu = addr >> 12;
1321 idx = (addr >> 6) & 0x3;
1322 switch (addr & 0x30) {
1323 case 0x00: /* gtccr */
1324 break;
1325 case 0x10: /* gtbcr */
1326 if ((mpp->timers[idx].ticc & 0x80000000) != 0 &&
1327 (val & 0x80000000) == 0 &&
1328 (mpp->timers[idx].tibc & 0x80000000) != 0)
1329 mpp->timers[idx].ticc &= ~0x80000000;
1330 mpp->timers[idx].tibc = val;
1331 break;
1332 case 0x20: /* GTIVPR */
1333 write_IRQreg(mpp, MPIC_TMR_IRQ + idx, IRQ_IPVP, val);
1334 break;
1335 case 0x30: /* GTIDR & TFRR */
1336 if ((addr & 0xF0) == 0xF0)
1337 mpp->dst[cpu].tfrr = val;
1338 else
1339 write_IRQreg(mpp, MPIC_TMR_IRQ + idx, IRQ_IDE, val);
1340 break;
1341 }
1342}
1343
1344static uint32_t mpic_timer_read (void *opaque, target_phys_addr_t addr)
1345{
1346 openpic_t *mpp = opaque;
1347 uint32_t retval;
1348 int idx, cpu;
1349
1350 DPRINTF("%s: addr %08x\n", __func__, addr);
1351 retval = 0xFFFFFFFF;
1352 if (addr & 0xF)
1353 return retval;
1354 addr &= 0xFFFF;
1355 cpu = addr >> 12;
1356 idx = (addr >> 6) & 0x3;
1357 switch (addr & 0x30) {
1358 case 0x00: /* gtccr */
1359 retval = mpp->timers[idx].ticc;
1360 break;
1361 case 0x10: /* gtbcr */
1362 retval = mpp->timers[idx].tibc;
1363 break;
1364 case 0x20: /* TIPV */
1365 retval = read_IRQreg(mpp, MPIC_TMR_IRQ + idx, IRQ_IPVP);
1366 break;
1367 case 0x30: /* TIDR */
1368 if ((addr &0xF0) == 0XF0)
1369 retval = mpp->dst[cpu].tfrr;
1370 else
1371 retval = read_IRQreg(mpp, MPIC_TMR_IRQ + idx, IRQ_IDE);
1372 break;
1373 }
1374 DPRINTF("%s: => %08x\n", __func__, retval);
1375
1376 return retval;
1377}
1378
1379static void mpic_src_ext_write (void *opaque, target_phys_addr_t addr,
1380 uint32_t val)
1381{
1382 openpic_t *mpp = opaque;
1383 int idx = MPIC_EXT_IRQ;
1384
1385 DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
1386 if (addr & 0xF)
1387 return;
1388
1389 addr -= MPIC_EXT_REG_START & (TARGET_PAGE_SIZE - 1);
1390 if (addr < MPIC_EXT_REG_SIZE) {
1391 idx += (addr & 0xFFF0) >> 5;
1392 if (addr & 0x10) {
1393 /* EXDE / IFEDE / IEEDE */
1394 write_IRQreg(mpp, idx, IRQ_IDE, val);
1395 } else {
1396 /* EXVP / IFEVP / IEEVP */
1397 write_IRQreg(mpp, idx, IRQ_IPVP, val);
1398 }
1399 }
1400}
1401
1402static uint32_t mpic_src_ext_read (void *opaque, target_phys_addr_t addr)
1403{
1404 openpic_t *mpp = opaque;
1405 uint32_t retval;
1406 int idx = MPIC_EXT_IRQ;
1407
1408 DPRINTF("%s: addr %08x\n", __func__, addr);
1409 retval = 0xFFFFFFFF;
1410 if (addr & 0xF)
1411 return retval;
1412
1413 addr -= MPIC_EXT_REG_START & (TARGET_PAGE_SIZE - 1);
1414 if (addr < MPIC_EXT_REG_SIZE) {
1415 idx += (addr & 0xFFF0) >> 5;
1416 if (addr & 0x10) {
1417 /* EXDE / IFEDE / IEEDE */
1418 retval = read_IRQreg(mpp, idx, IRQ_IDE);
1419 } else {
1420 /* EXVP / IFEVP / IEEVP */
1421 retval = read_IRQreg(mpp, idx, IRQ_IPVP);
1422 }
1423 DPRINTF("%s: => %08x\n", __func__, retval);
1424 }
1425
1426 return retval;
1427}
1428
1429static void mpic_src_int_write (void *opaque, target_phys_addr_t addr,
1430 uint32_t val)
1431{
1432 openpic_t *mpp = opaque;
1433 int idx = MPIC_INT_IRQ;
1434
1435 DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
1436 if (addr & 0xF)
1437 return;
1438
1439 addr -= MPIC_INT_REG_START & (TARGET_PAGE_SIZE - 1);
1440 if (addr < MPIC_INT_REG_SIZE) {
1441 idx += (addr & 0xFFF0) >> 5;
1442 if (addr & 0x10) {
1443 /* EXDE / IFEDE / IEEDE */
1444 write_IRQreg(mpp, idx, IRQ_IDE, val);
1445 } else {
1446 /* EXVP / IFEVP / IEEVP */
1447 write_IRQreg(mpp, idx, IRQ_IPVP, val);
1448 }
1449 }
1450}
1451
1452static uint32_t mpic_src_int_read (void *opaque, target_phys_addr_t addr)
1453{
1454 openpic_t *mpp = opaque;
1455 uint32_t retval;
1456 int idx = MPIC_INT_IRQ;
1457
1458 DPRINTF("%s: addr %08x\n", __func__, addr);
1459 retval = 0xFFFFFFFF;
1460 if (addr & 0xF)
1461 return retval;
1462
1463 addr -= MPIC_INT_REG_START & (TARGET_PAGE_SIZE - 1);
1464 if (addr < MPIC_INT_REG_SIZE) {
1465 idx += (addr & 0xFFF0) >> 5;
1466 if (addr & 0x10) {
1467 /* EXDE / IFEDE / IEEDE */
1468 retval = read_IRQreg(mpp, idx, IRQ_IDE);
1469 } else {
1470 /* EXVP / IFEVP / IEEVP */
1471 retval = read_IRQreg(mpp, idx, IRQ_IPVP);
1472 }
1473 DPRINTF("%s: => %08x\n", __func__, retval);
1474 }
1475
1476 return retval;
1477}
1478
1479static void mpic_src_msg_write (void *opaque, target_phys_addr_t addr,
1480 uint32_t val)
1481{
1482 openpic_t *mpp = opaque;
1483 int idx = MPIC_MSG_IRQ;
1484
1485 DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
1486 if (addr & 0xF)
1487 return;
1488
1489 addr -= MPIC_MSG_REG_START & (TARGET_PAGE_SIZE - 1);
1490 if (addr < MPIC_MSG_REG_SIZE) {
1491 idx += (addr & 0xFFF0) >> 5;
1492 if (addr & 0x10) {
1493 /* EXDE / IFEDE / IEEDE */
1494 write_IRQreg(mpp, idx, IRQ_IDE, val);
1495 } else {
1496 /* EXVP / IFEVP / IEEVP */
1497 write_IRQreg(mpp, idx, IRQ_IPVP, val);
1498 }
1499 }
1500}
1501
1502static uint32_t mpic_src_msg_read (void *opaque, target_phys_addr_t addr)
1503{
1504 openpic_t *mpp = opaque;
1505 uint32_t retval;
1506 int idx = MPIC_MSG_IRQ;
1507
1508 DPRINTF("%s: addr %08x\n", __func__, addr);
1509 retval = 0xFFFFFFFF;
1510 if (addr & 0xF)
1511 return retval;
1512
1513 addr -= MPIC_MSG_REG_START & (TARGET_PAGE_SIZE - 1);
1514 if (addr < MPIC_MSG_REG_SIZE) {
1515 idx += (addr & 0xFFF0) >> 5;
1516 if (addr & 0x10) {
1517 /* EXDE / IFEDE / IEEDE */
1518 retval = read_IRQreg(mpp, idx, IRQ_IDE);
1519 } else {
1520 /* EXVP / IFEVP / IEEVP */
1521 retval = read_IRQreg(mpp, idx, IRQ_IPVP);
1522 }
1523 DPRINTF("%s: => %08x\n", __func__, retval);
1524 }
1525
1526 return retval;
1527}
1528
1529static void mpic_src_msi_write (void *opaque, target_phys_addr_t addr,
1530 uint32_t val)
1531{
1532 openpic_t *mpp = opaque;
1533 int idx = MPIC_MSI_IRQ;
1534
1535 DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
1536 if (addr & 0xF)
1537 return;
1538
1539 addr -= MPIC_MSI_REG_START & (TARGET_PAGE_SIZE - 1);
1540 if (addr < MPIC_MSI_REG_SIZE) {
1541 idx += (addr & 0xFFF0) >> 5;
1542 if (addr & 0x10) {
1543 /* EXDE / IFEDE / IEEDE */
1544 write_IRQreg(mpp, idx, IRQ_IDE, val);
1545 } else {
1546 /* EXVP / IFEVP / IEEVP */
1547 write_IRQreg(mpp, idx, IRQ_IPVP, val);
1548 }
1549 }
1550}
1551static uint32_t mpic_src_msi_read (void *opaque, target_phys_addr_t addr)
1552{
1553 openpic_t *mpp = opaque;
1554 uint32_t retval;
1555 int idx = MPIC_MSI_IRQ;
1556
1557 DPRINTF("%s: addr %08x\n", __func__, addr);
1558 retval = 0xFFFFFFFF;
1559 if (addr & 0xF)
1560 return retval;
1561
1562 addr -= MPIC_MSI_REG_START & (TARGET_PAGE_SIZE - 1);
1563 if (addr < MPIC_MSI_REG_SIZE) {
1564 idx += (addr & 0xFFF0) >> 5;
1565 if (addr & 0x10) {
1566 /* EXDE / IFEDE / IEEDE */
1567 retval = read_IRQreg(mpp, idx, IRQ_IDE);
1568 } else {
1569 /* EXVP / IFEVP / IEEVP */
1570 retval = read_IRQreg(mpp, idx, IRQ_IPVP);
1571 }
1572 DPRINTF("%s: => %08x\n", __func__, retval);
1573 }
1574
1575 return retval;
1576}
1577
1578static CPUWriteMemoryFunc *mpic_glb_write[] = {
1579 &openpic_buggy_write,
1580 &openpic_buggy_write,
1581 &openpic_gbl_write,
1582};
1583
1584static CPUReadMemoryFunc *mpic_glb_read[] = {
1585 &openpic_buggy_read,
1586 &openpic_buggy_read,
1587 &openpic_gbl_read,
1588};
1589
1590static CPUWriteMemoryFunc *mpic_tmr_write[] = {
1591 &openpic_buggy_write,
1592 &openpic_buggy_write,
1593 &mpic_timer_write,
1594};
1595
1596static CPUReadMemoryFunc *mpic_tmr_read[] = {
1597 &openpic_buggy_read,
1598 &openpic_buggy_read,
1599 &mpic_timer_read,
1600};
1601
1602static CPUWriteMemoryFunc *mpic_cpu_write[] = {
1603 &openpic_buggy_write,
1604 &openpic_buggy_write,
1605 &openpic_cpu_write,
1606};
1607
1608static CPUReadMemoryFunc *mpic_cpu_read[] = {
1609 &openpic_buggy_read,
1610 &openpic_buggy_read,
1611 &openpic_cpu_read,
1612};
1613
1614static CPUWriteMemoryFunc *mpic_ext_write[] = {
1615 &openpic_buggy_write,
1616 &openpic_buggy_write,
1617 &mpic_src_ext_write,
1618};
1619
1620static CPUReadMemoryFunc *mpic_ext_read[] = {
1621 &openpic_buggy_read,
1622 &openpic_buggy_read,
1623 &mpic_src_ext_read,
1624};
1625
1626static CPUWriteMemoryFunc *mpic_int_write[] = {
1627 &openpic_buggy_write,
1628 &openpic_buggy_write,
1629 &mpic_src_int_write,
1630};
1631
1632static CPUReadMemoryFunc *mpic_int_read[] = {
1633 &openpic_buggy_read,
1634 &openpic_buggy_read,
1635 &mpic_src_int_read,
1636};
1637
1638static CPUWriteMemoryFunc *mpic_msg_write[] = {
1639 &openpic_buggy_write,
1640 &openpic_buggy_write,
1641 &mpic_src_msg_write,
1642};
1643
1644static CPUReadMemoryFunc *mpic_msg_read[] = {
1645 &openpic_buggy_read,
1646 &openpic_buggy_read,
1647 &mpic_src_msg_read,
1648};
1649static CPUWriteMemoryFunc *mpic_msi_write[] = {
1650 &openpic_buggy_write,
1651 &openpic_buggy_write,
1652 &mpic_src_msi_write,
1653};
1654
1655static CPUReadMemoryFunc *mpic_msi_read[] = {
1656 &openpic_buggy_read,
1657 &openpic_buggy_read,
1658 &mpic_src_msi_read,
1659};
1660
1661qemu_irq *mpic_init (target_phys_addr_t base, int nb_cpus,
1662 qemu_irq **irqs, qemu_irq irq_out)
1663{
1664 openpic_t *mpp;
1665 int i;
1666 struct {
1667 CPUReadMemoryFunc **read;
1668 CPUWriteMemoryFunc **write;
1669 target_phys_addr_t start_addr;
1670 ram_addr_t size;
dfebf62b 1671 } const list[] = {
b7169916
AJ		 1672 {mpic_glb_read, mpic_glb_write, MPIC_GLB_REG_START, MPIC_GLB_REG_SIZE},
1673 {mpic_tmr_read, mpic_tmr_write, MPIC_TMR_REG_START, MPIC_TMR_REG_SIZE},
1674 {mpic_ext_read, mpic_ext_write, MPIC_EXT_REG_START, MPIC_EXT_REG_SIZE},
1675 {mpic_int_read, mpic_int_write, MPIC_INT_REG_START, MPIC_INT_REG_SIZE},
1676 {mpic_msg_read, mpic_msg_write, MPIC_MSG_REG_START, MPIC_MSG_REG_SIZE},
1677 {mpic_msi_read, mpic_msi_write, MPIC_MSI_REG_START, MPIC_MSI_REG_SIZE},
1678 {mpic_cpu_read, mpic_cpu_write, MPIC_CPU_REG_START, MPIC_CPU_REG_SIZE},
1679 };
1680
1681 /* XXX: for now, only one CPU is supported */
1682 if (nb_cpus != 1)
1683 return NULL;
1684
1685 mpp = qemu_mallocz(sizeof(openpic_t));
1686
1687 for (i = 0; i < sizeof(list)/sizeof(list[0]); i++) {
1688 int mem_index;
1689
1690 mem_index = cpu_register_io_memory(0, list[i].read, list[i].write, mpp);
1691 if (mem_index < 0) {
1692 goto free;
1693 }
1694 cpu_register_physical_memory(base + list[i].start_addr,
1695 list[i].size, mem_index);
1696 }
1697
1698 mpp->nb_cpus = nb_cpus;
1699 mpp->max_irq = MPIC_MAX_IRQ;
1700 mpp->irq_ipi0 = MPIC_IPI_IRQ;
1701 mpp->irq_tim0 = MPIC_TMR_IRQ;
1702
1703 for (i = 0; i < nb_cpus; i++)
1704 mpp->dst[i].irqs = irqs[i];
1705 mpp->irq_out = irq_out;
1706 mpp->need_swap = 0; /* MPIC has the same endian as target */
1707
1708 mpp->irq_raise = mpic_irq_raise;
1709 mpp->reset = mpic_reset;
1710
1711 register_savevm("mpic", 0, 2, openpic_save, openpic_load, mpp);
1712 qemu_register_reset(mpic_reset, mpp);
1713 mpp->reset(mpp);
1714
1715 return qemu_allocate_irqs(openpic_set_irq, mpp, mpp->max_irq);
1716
1717free:
1718 qemu_free(mpp);
1719 return NULL;
dbda808a 1720}
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