4 * Copyright (c) 2004 Jocelyn Mayer
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
26 * Based on OpenPic implementations:
27 * - Intel GW80314 I/O compagnion chip developper's manual
28 * - Motorola MPC8245 & MPC8540 user manuals.
29 * - Motorola MCP750 (aka Raven) programmer manual.
30 * - Motorola Harrier programmer manuel
32 * Serial interrupts, as implemented in Raven chipset are not supported yet.
37 //#define DEBUG_OPENPIC
40 #define DPRINTF(fmt, args...) do { printf(fmt , ##args); } while (0)
42 #define DPRINTF(fmt, args...) do { } while (0)
44 #define ERROR(fmr, args...) do { printf("ERROR: " fmr , ##args); } while (0)
46 #define USE_MPCxxx /* Intel model is broken, for now */
48 #if defined (USE_INTEL_GW80314)
49 /* Intel GW80314 I/O Companion chip */
59 #define VID (0x00000000)
61 #define OPENPIC_LITTLE_ENDIAN 1
62 #define OPENPIC_BIG_ENDIAN 0
64 #elif defined(USE_MPCxxx)
74 #define VID 0x03 /* MPIC version ID */
75 #define VENI 0x00000000 /* Vendor ID */
82 #define OPENPIC_LITTLE_ENDIAN 1
83 #define OPENPIC_BIG_ENDIAN 0
86 #error "Please select which OpenPic implementation is to be emulated"
89 #if (OPENPIC_BIG_ENDIAN && !TARGET_WORDS_BIGENDIAN) || \
90 (OPENPIC_LITTLE_ENDIAN && TARGET_WORDS_BIGENDIAN)
94 /* Interrupt definitions */
95 #define IRQ_FE (EXT_IRQ) /* Internal functional IRQ */
96 #define IRQ_ERR (EXT_IRQ + 1) /* Error IRQ */
97 #define IRQ_TIM0 (EXT_IRQ + 2) /* First timer IRQ */
99 #define IRQ_IPI0 (IRQ_TIM0 + MAX_TMR) /* First IPI IRQ */
100 #define IRQ_DBL0 (IRQ_IPI0 + (MAX_CPU * MAX_IPI)) /* First doorbell IRQ */
102 #define IRQ_DBL0 (IRQ_TIM0 + MAX_TMR) /* First doorbell IRQ */
103 #define IRQ_MBX0 (IRQ_DBL0 + MAX_DBL) /* First mailbox IRQ */
106 #define BF_WIDTH(_bits_) \
107 (((_bits_) + (sizeof(uint32_t) * 8) - 1) / (sizeof(uint32_t) * 8))
109 static inline void set_bit (uint32_t *field, int bit)
111 field[bit >> 5] |= 1 << (bit & 0x1F);
114 static inline void reset_bit (uint32_t *field, int bit)
116 field[bit >> 5] &= ~(1 << (bit & 0x1F));
119 static inline int test_bit (uint32_t *field, int bit)
121 return (field[bit >> 5] & 1 << (bit & 0x1F)) != 0;
131 typedef struct IRQ_queue_t {
132 uint32_t queue[BF_WIDTH(MAX_IRQ)];
137 typedef struct IRQ_src_t {
138 uint32_t ipvp; /* IRQ vector/priority register */
139 uint32_t ide; /* IRQ destination register */
142 int pending; /* TRUE if IRQ is pending */
152 #define IPVP_PRIORITY_MASK (0x1F << 16)
153 #define IPVP_PRIORITY(_ipvpr_) ((int)(((_ipvpr_) & IPVP_PRIORITY_MASK) >> 16))
154 #define IPVP_VECTOR_MASK ((1 << VECTOR_BITS) - 1)
155 #define IPVP_VECTOR(_ipvpr_) ((_ipvpr_) & IPVP_VECTOR_MASK)
157 typedef struct IRQ_dst_t {
158 uint32_t pctp; /* CPU current task priority */
159 uint32_t pcsr; /* CPU sensitivity register */
161 IRQ_queue_t servicing;
162 CPUState *env; /* Needed if we did SMP */
167 /* Global registers */
168 uint32_t frep; /* Feature reporting register */
169 uint32_t glbc; /* Global configuration register */
170 uint32_t micr; /* MPIC interrupt configuration register */
171 uint32_t veni; /* Vendor identification register */
172 uint32_t spve; /* Spurious vector register */
173 uint32_t tifr; /* Timer frequency reporting register */
174 /* Source registers */
175 IRQ_src_t src[MAX_IRQ];
176 /* Local registers per output pin */
177 IRQ_dst_t dst[MAX_CPU];
179 /* Timer registers */
181 uint32_t ticc; /* Global timer current count register */
182 uint32_t tibc; /* Global timer base count register */
185 /* Doorbell registers */
186 uint32_t dar; /* Doorbell activate register */
188 uint32_t dmr; /* Doorbell messaging register */
189 } doorbells[MAX_DBL];
192 /* Mailbox registers */
194 uint32_t mbr; /* Mailbox register */
195 } mailboxes[MAX_MAILBOXES];
199 static inline void IRQ_setbit (IRQ_queue_t *q, int n_IRQ)
201 set_bit(q->queue, n_IRQ);
204 static inline void IRQ_resetbit (IRQ_queue_t *q, int n_IRQ)
206 reset_bit(q->queue, n_IRQ);
209 static inline int IRQ_testbit (IRQ_queue_t *q, int n_IRQ)
211 return test_bit(q->queue, n_IRQ);
214 static void IRQ_check (openpic_t *opp, IRQ_queue_t *q)
221 for (i = 0; i < MAX_IRQ; i++) {
222 if (IRQ_testbit(q, i)) {
223 DPRINTF("IRQ_check: irq %d set ipvp_pr=%d pr=%d\n",
224 i, IPVP_PRIORITY(opp->src[i].ipvp), priority);
225 if (IPVP_PRIORITY(opp->src[i].ipvp) > priority) {
227 priority = IPVP_PRIORITY(opp->src[i].ipvp);
232 q->priority = priority;
235 static int IRQ_get_next (openpic_t *opp, IRQ_queue_t *q)
245 static void IRQ_local_pipe (openpic_t *opp, int n_CPU, int n_IRQ)
251 dst = &opp->dst[n_CPU];
252 src = &opp->src[n_IRQ];
253 priority = IPVP_PRIORITY(src->ipvp);
254 if (priority <= dst->pctp) {
255 /* Too low priority */
258 if (IRQ_testbit(&dst->raised, n_IRQ)) {
262 set_bit(&src->ipvp, IPVP_ACTIVITY);
263 IRQ_setbit(&dst->raised, n_IRQ);
264 if (priority > dst->raised.priority) {
265 IRQ_get_next(opp, &dst->raised);
266 DPRINTF("Raise CPU IRQ\n");
267 cpu_interrupt(cpu_single_env, CPU_INTERRUPT_HARD);
271 /* update pic state because registers for n_IRQ have changed value */
272 static void openpic_update_irq(openpic_t *opp, int n_IRQ)
277 src = &opp->src[n_IRQ];
283 if (test_bit(&src->ipvp, IPVP_MASK)) {
284 /* Interrupt source is disabled */
287 if (IPVP_PRIORITY(src->ipvp) == 0) {
288 /* Priority set to zero */
291 if (test_bit(&src->ipvp, IPVP_ACTIVITY)) {
292 /* IRQ already active */
295 if (src->ide == 0x00000000) {
300 if (!test_bit(&src->ipvp, IPVP_MODE) ||
301 src->ide == (1 << src->last_cpu)) {
302 /* Directed delivery mode */
303 for (i = 0; i < opp->nb_cpus; i++) {
304 if (test_bit(&src->ide, i))
305 IRQ_local_pipe(opp, i, n_IRQ);
308 /* Distributed delivery mode */
309 /* XXX: incorrect code */
310 for (i = src->last_cpu; i < src->last_cpu; i++) {
313 if (test_bit(&src->ide, i)) {
314 IRQ_local_pipe(opp, i, n_IRQ);
322 void openpic_set_irq(openpic_t *opp, int n_IRQ, int level)
326 src = &opp->src[n_IRQ];
327 DPRINTF("openpic: set irq %d = %d ipvp=%08x\n",
328 n_IRQ, level, src->ipvp);
329 if (test_bit(&src->ipvp, IPVP_SENSE)) {
330 /* level-sensitive irq */
331 src->pending = level;
333 reset_bit(&src->ipvp, IPVP_ACTIVITY);
335 /* edge-sensitive irq */
339 openpic_update_irq(opp, n_IRQ);
342 static void openpic_reset (openpic_t *opp)
346 opp->glbc = 0x80000000;
347 /* Initialise controler registers */
348 opp->frep = ((EXT_IRQ - 1) << 16) | ((MAX_CPU - 1) << 8) | VID;
350 opp->spve = 0x000000FF;
351 opp->tifr = 0x003F7A00;
353 opp->micr = 0x00000000;
354 /* Initialise IRQ sources */
355 for (i = 0; i < MAX_IRQ; i++) {
356 opp->src[i].ipvp = 0xA0000000;
357 opp->src[i].ide = 0x00000000;
359 /* Initialise IRQ destinations */
360 for (i = 0; i < opp->nb_cpus; i++) {
361 opp->dst[i].pctp = 0x0000000F;
362 opp->dst[i].pcsr = 0x00000000;
363 memset(&opp->dst[i].raised, 0, sizeof(IRQ_queue_t));
364 memset(&opp->dst[i].servicing, 0, sizeof(IRQ_queue_t));
366 /* Initialise timers */
367 for (i = 0; i < MAX_TMR; i++) {
368 opp->timers[i].ticc = 0x00000000;
369 opp->timers[i].tibc = 0x80000000;
371 /* Initialise doorbells */
373 opp->dar = 0x00000000;
374 for (i = 0; i < MAX_DBL; i++) {
375 opp->doorbells[i].dmr = 0x00000000;
378 /* Initialise mailboxes */
380 for (i = 0; i < MAX_MBX; i++) { /* ? */
381 opp->mailboxes[i].mbr = 0x00000000;
384 /* Go out of RESET state */
385 opp->glbc = 0x00000000;
388 static inline uint32_t read_IRQreg (openpic_t *opp, int n_IRQ, uint32_t reg)
394 retval = opp->src[n_IRQ].ipvp;
397 retval = opp->src[n_IRQ].ide;
404 static inline void write_IRQreg (openpic_t *opp, int n_IRQ,
405 uint32_t reg, uint32_t val)
411 /* NOTE: not fully accurate for special IRQs, but simple and
413 /* ACTIVITY bit is read-only */
414 opp->src[n_IRQ].ipvp =
415 (opp->src[n_IRQ].ipvp & 0x40000000) |
417 openpic_update_irq(opp, n_IRQ);
418 DPRINTF("Set IPVP %d to 0x%08x -> 0x%08x\n",
419 n_IRQ, val, opp->src[n_IRQ].ipvp);
422 tmp = val & 0xC0000000;
423 tmp |= val & ((1 << MAX_CPU) - 1);
424 opp->src[n_IRQ].ide = tmp;
425 DPRINTF("Set IDE %d to 0x%08x\n", n_IRQ, opp->src[n_IRQ].ide);
430 #if 0 // Code provision for Intel model
432 static uint32_t read_doorbell_register (openpic_t *opp,
433 int n_dbl, uint32_t offset)
438 case DBL_IPVP_OFFSET:
439 retval = read_IRQreg(opp, IRQ_DBL0 + n_dbl, IRQ_IPVP);
442 retval = read_IRQreg(opp, IRQ_DBL0 + n_dbl, IRQ_IDE);
445 retval = opp->doorbells[n_dbl].dmr;
452 static void write_doorbell_register (penpic_t *opp, int n_dbl,
453 uint32_t offset, uint32_t value)
456 case DBL_IVPR_OFFSET:
457 write_IRQreg(opp, IRQ_DBL0 + n_dbl, IRQ_IPVP, value);
460 write_IRQreg(opp, IRQ_DBL0 + n_dbl, IRQ_IDE, value);
463 opp->doorbells[n_dbl].dmr = value;
470 static uint32_t read_mailbox_register (openpic_t *opp,
471 int n_mbx, uint32_t offset)
477 retval = opp->mailboxes[n_mbx].mbr;
479 case MBX_IVPR_OFFSET:
480 retval = read_IRQreg(opp, IRQ_MBX0 + n_mbx, IRQ_IPVP);
483 retval = read_IRQreg(opp, IRQ_MBX0 + n_mbx, IRQ_IDE);
490 static void write_mailbox_register (openpic_t *opp, int n_mbx,
491 uint32_t address, uint32_t value)
495 opp->mailboxes[n_mbx].mbr = value;
497 case MBX_IVPR_OFFSET:
498 write_IRQreg(opp, IRQ_MBX0 + n_mbx, IRQ_IPVP, value);
501 write_IRQreg(opp, IRQ_MBX0 + n_mbx, IRQ_IDE, value);
506 #endif /* 0 : Code provision for Intel model */
508 static void openpic_gbl_write (void *opaque, uint32_t addr, uint32_t val)
510 openpic_t *opp = opaque;
512 DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
515 #if defined OPENPIC_SWAP
520 case 0x00: /* FREP */
522 case 0x20: /* GLBC */
523 if (val & 0x80000000)
525 opp->glbc = val & ~0x80000000;
527 case 0x80: /* VENI */
529 case 0x90: /* PINT */
530 /* XXX: Should be able to reset any CPU */
532 DPRINTF("Reset CPU IRQ\n");
533 // cpu_interrupt(cpu_single_env, CPU_INTERRUPT_RESET);
537 case 0xA0: /* IPI_IPVP */
543 idx = (addr - 0xA0) >> 4;
544 write_IRQreg(opp, IRQ_IPI0 + idx, IRQ_IPVP, val);
548 case 0xE0: /* SPVE */
549 opp->spve = val & 0x000000FF;
551 case 0xF0: /* TIFR */
559 static uint32_t openpic_gbl_read (void *opaque, uint32_t addr)
561 openpic_t *opp = opaque;
564 DPRINTF("%s: addr %08x\n", __func__, addr);
570 case 0x00: /* FREP */
573 case 0x20: /* GLBC */
576 case 0x80: /* VENI */
579 case 0x90: /* PINT */
583 case 0xA0: /* IPI_IPVP */
589 idx = (addr - 0xA0) >> 4;
590 retval = read_IRQreg(opp, IRQ_IPI0 + idx, IRQ_IPVP);
594 case 0xE0: /* SPVE */
597 case 0xF0: /* TIFR */
603 DPRINTF("%s: => %08x\n", __func__, retval);
604 #if defined OPENPIC_SWAP
605 retval = bswap32(retval);
611 static void openpic_timer_write (void *opaque, uint32_t addr, uint32_t val)
613 openpic_t *opp = opaque;
616 DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
619 #if defined OPENPIC_SWAP
624 idx = (addr & 0xFFF0) >> 6;
627 case 0x00: /* TICC */
629 case 0x10: /* TIBC */
630 if ((opp->timers[idx].ticc & 0x80000000) != 0 &&
631 (val & 0x800000000) == 0 &&
632 (opp->timers[idx].tibc & 0x80000000) != 0)
633 opp->timers[idx].ticc &= ~0x80000000;
634 opp->timers[idx].tibc = val;
636 case 0x20: /* TIVP */
637 write_IRQreg(opp, IRQ_TIM0 + idx, IRQ_IPVP, val);
639 case 0x30: /* TIDE */
640 write_IRQreg(opp, IRQ_TIM0 + idx, IRQ_IDE, val);
645 static uint32_t openpic_timer_read (void *opaque, uint32_t addr)
647 openpic_t *opp = opaque;
651 DPRINTF("%s: addr %08x\n", __func__, addr);
657 idx = (addr & 0xFFF0) >> 6;
660 case 0x00: /* TICC */
661 retval = opp->timers[idx].ticc;
663 case 0x10: /* TIBC */
664 retval = opp->timers[idx].tibc;
666 case 0x20: /* TIPV */
667 retval = read_IRQreg(opp, IRQ_TIM0 + idx, IRQ_IPVP);
669 case 0x30: /* TIDE */
670 retval = read_IRQreg(opp, IRQ_TIM0 + idx, IRQ_IDE);
673 DPRINTF("%s: => %08x\n", __func__, retval);
674 #if defined OPENPIC_SWAP
675 retval = bswap32(retval);
681 static void openpic_src_write (void *opaque, uint32_t addr, uint32_t val)
683 openpic_t *opp = opaque;
686 DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
689 #if defined OPENPIC_SWAP
692 addr = addr & 0xFFF0;
695 /* EXDE / IFEDE / IEEDE */
696 write_IRQreg(opp, idx, IRQ_IDE, val);
698 /* EXVP / IFEVP / IEEVP */
699 write_IRQreg(opp, idx, IRQ_IPVP, val);
703 static uint32_t openpic_src_read (void *opaque, uint32_t addr)
705 openpic_t *opp = opaque;
709 DPRINTF("%s: addr %08x\n", __func__, addr);
713 addr = addr & 0xFFF0;
716 /* EXDE / IFEDE / IEEDE */
717 retval = read_IRQreg(opp, idx, IRQ_IDE);
719 /* EXVP / IFEVP / IEEVP */
720 retval = read_IRQreg(opp, idx, IRQ_IPVP);
722 DPRINTF("%s: => %08x\n", __func__, retval);
723 #if defined OPENPIC_SWAP
724 retval = tswap32(retval);
730 static void openpic_cpu_write (void *opaque, uint32_t addr, uint32_t val)
732 openpic_t *opp = opaque;
737 DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
740 #if defined OPENPIC_SWAP
745 dst = &opp->dst[idx];
749 case 0x40: /* PIPD */
753 idx = (addr - 0x40) >> 4;
754 write_IRQreg(opp, IRQ_IPI0 + idx, IRQ_IDE, val);
755 openpic_set_irq(opp, IRQ_IPI0 + idx, 1);
756 openpic_set_irq(opp, IRQ_IPI0 + idx, 0);
759 case 0x80: /* PCTP */
760 dst->pctp = val & 0x0000000F;
762 case 0x90: /* WHOAMI */
763 /* Read-only register */
765 case 0xA0: /* PIAC */
766 /* Read-only register */
768 case 0xB0: /* PEOI */
770 n_IRQ = IRQ_get_next(opp, &dst->servicing);
771 IRQ_resetbit(&dst->servicing, n_IRQ);
772 dst->servicing.next = -1;
773 src = &opp->src[n_IRQ];
774 /* Set up next servicing IRQ */
775 IRQ_get_next(opp, &dst->servicing);
776 /* Check queued interrupts. */
777 n_IRQ = IRQ_get_next(opp, &dst->raised);
779 src = &opp->src[n_IRQ];
780 if (IPVP_PRIORITY(src->ipvp) > dst->servicing.priority) {
781 DPRINTF("Raise CPU IRQ\n");
782 cpu_interrupt(cpu_single_env, CPU_INTERRUPT_HARD);
791 static uint32_t openpic_cpu_read (void *opaque, uint32_t addr)
793 openpic_t *opp = opaque;
799 DPRINTF("%s: addr %08x\n", __func__, addr);
805 dst = &opp->dst[idx];
808 case 0x80: /* PCTP */
811 case 0x90: /* WHOAMI */
814 case 0xA0: /* PIAC */
815 n_IRQ = IRQ_get_next(opp, &dst->raised);
816 DPRINTF("PIAC: irq=%d\n", n_IRQ);
818 /* No more interrupt pending */
821 src = &opp->src[n_IRQ];
822 if (!test_bit(&src->ipvp, IPVP_ACTIVITY) ||
823 !(IPVP_PRIORITY(src->ipvp) > dst->pctp)) {
824 /* - Spurious level-sensitive IRQ
825 * - Priorities has been changed
826 * and the pending IRQ isn't allowed anymore
828 reset_bit(&src->ipvp, IPVP_ACTIVITY);
829 retval = IPVP_VECTOR(opp->spve);
831 /* IRQ enter servicing state */
832 IRQ_setbit(&dst->servicing, n_IRQ);
833 retval = IPVP_VECTOR(src->ipvp);
835 IRQ_resetbit(&dst->raised, n_IRQ);
836 dst->raised.next = -1;
837 if (!test_bit(&src->ipvp, IPVP_SENSE)) {
838 /* edge-sensitive IRQ */
839 reset_bit(&src->ipvp, IPVP_ACTIVITY);
844 case 0xB0: /* PEOI */
850 idx = (addr - 0x40) >> 4;
851 retval = read_IRQreg(opp, IRQ_IPI0 + idx, IRQ_IDE);
857 DPRINTF("%s: => %08x\n", __func__, retval);
858 #if defined OPENPIC_SWAP
859 retval= bswap32(retval);
865 static void openpic_buggy_write (void *opaque,
866 target_phys_addr_t addr, uint32_t val)
868 printf("Invalid OPENPIC write access !\n");
871 static uint32_t openpic_buggy_read (void *opaque, target_phys_addr_t addr)
873 printf("Invalid OPENPIC read access !\n");
878 static void openpic_writel (void *opaque,
879 target_phys_addr_t addr, uint32_t val)
881 openpic_t *opp = opaque;
884 DPRINTF("%s: offset %08x val: %08x\n", __func__, (int)addr, val);
886 /* Global registers */
887 openpic_gbl_write(opp, addr, val);
888 } else if (addr < 0x10000) {
889 /* Timers registers */
890 openpic_timer_write(opp, addr, val);
891 } else if (addr < 0x20000) {
892 /* Source registers */
893 openpic_src_write(opp, addr, val);
896 openpic_cpu_write(opp, addr, val);
900 static uint32_t openpic_readl (void *opaque,target_phys_addr_t addr)
902 openpic_t *opp = opaque;
906 DPRINTF("%s: offset %08x\n", __func__, (int)addr);
908 /* Global registers */
909 retval = openpic_gbl_read(opp, addr);
910 } else if (addr < 0x10000) {
911 /* Timers registers */
912 retval = openpic_timer_read(opp, addr);
913 } else if (addr < 0x20000) {
914 /* Source registers */
915 retval = openpic_src_read(opp, addr);
918 retval = openpic_cpu_read(opp, addr);
924 static CPUWriteMemoryFunc *openpic_write[] = {
925 &openpic_buggy_write,
926 &openpic_buggy_write,
930 static CPUReadMemoryFunc *openpic_read[] = {
936 static void openpic_map(PCIDevice *pci_dev, int region_num,
937 uint32_t addr, uint32_t size, int type)
942 DPRINTF("Map OpenPIC\n");
943 opp = (openpic_t *)pci_dev;
944 /* Global registers */
945 DPRINTF("Register OPENPIC gbl %08x => %08x\n",
946 addr + 0x1000, addr + 0x1000 + 0x100);
947 /* Timer registers */
948 DPRINTF("Register OPENPIC timer %08x => %08x\n",
949 addr + 0x1100, addr + 0x1100 + 0x40 * MAX_TMR);
950 /* Interrupt source registers */
951 DPRINTF("Register OPENPIC src %08x => %08x\n",
952 addr + 0x10000, addr + 0x10000 + 0x20 * (EXT_IRQ + 2));
953 /* Per CPU registers */
954 DPRINTF("Register OPENPIC dst %08x => %08x\n",
955 addr + 0x20000, addr + 0x20000 + 0x1000 * MAX_CPU);
956 opp_io_memory = cpu_register_io_memory(0, openpic_read,
958 cpu_register_physical_memory(addr, 0x40000, opp_io_memory);
959 #if 0 // Don't implement ISU for now
960 opp_io_memory = cpu_register_io_memory(0, openpic_src_read,
962 cpu_register_physical_memory(isu_base, 0x20 * (EXT_IRQ + 2),
967 openpic_t *openpic_init (uint32_t isu_base, uint32_t idu_base, int nb_cpus)
973 /* XXX: for now, only one CPU is supported */
976 opp = (openpic_t *)pci_register_device("OpenPIC", sizeof(openpic_t),
980 pci_conf = opp->pci_dev.config;
981 pci_conf[0x00] = 0x14; // IBM MPIC2
982 pci_conf[0x01] = 0x10;
983 pci_conf[0x02] = 0xFF;
984 pci_conf[0x03] = 0xFF;
985 pci_conf[0x0a] = 0x80; // PIC
986 pci_conf[0x0b] = 0x08;
987 pci_conf[0x0e] = 0x00; // header_type
988 pci_conf[0x3d] = 0x00; // no interrupt pin
990 /* Register I/O spaces */
991 pci_register_io_region((PCIDevice *)opp, 0, 0x40000,
992 PCI_ADDRESS_SPACE_MEM, &openpic_map);
994 isu_base &= 0xFFFC0000;
995 opp->nb_cpus = nb_cpus;
997 for (i = 0; i < EXT_IRQ; i++) {
998 opp->src[i].type = IRQ_EXTERNAL;
1000 for (; i < IRQ_TIM0; i++) {
1001 opp->src[i].type = IRQ_SPECIAL;
1008 for (; i < m; i++) {
1009 opp->src[i].type = IRQ_TIMER;
1011 for (; i < MAX_IRQ; i++) {
1012 opp->src[i].type = IRQ_INTERNAL;