xref: /openbmc/qemu/hw/ppc/ppc4xx_devs.c (revision 64c9a921)
1 /*
2  * QEMU PowerPC 4xx embedded processors shared devices emulation
3  *
4  * Copyright (c) 2007 Jocelyn Mayer
5  *
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 #include "qemu/osdep.h"
26 #include "qemu/units.h"
27 #include "sysemu/reset.h"
28 #include "cpu.h"
29 #include "hw/irq.h"
30 #include "hw/ppc/ppc.h"
31 #include "hw/ppc/ppc4xx.h"
32 #include "hw/boards.h"
33 #include "hw/intc/ppc-uic.h"
34 #include "hw/qdev-properties.h"
35 #include "qemu/log.h"
36 #include "exec/address-spaces.h"
37 #include "qemu/error-report.h"
38 #include "qapi/error.h"
39 
40 /*#define DEBUG_UIC*/
41 
42 #ifdef DEBUG_UIC
43 #  define LOG_UIC(...) qemu_log_mask(CPU_LOG_INT, ## __VA_ARGS__)
44 #else
45 #  define LOG_UIC(...) do { } while (0)
46 #endif
47 
48 static void ppc4xx_reset(void *opaque)
49 {
50     PowerPCCPU *cpu = opaque;
51 
52     cpu_reset(CPU(cpu));
53 }
54 
55 /*****************************************************************************/
56 /* Generic PowerPC 4xx processor instantiation */
57 PowerPCCPU *ppc4xx_init(const char *cpu_type,
58                         clk_setup_t *cpu_clk, clk_setup_t *tb_clk,
59                         uint32_t sysclk)
60 {
61     PowerPCCPU *cpu;
62     CPUPPCState *env;
63 
64     /* init CPUs */
65     cpu = POWERPC_CPU(cpu_create(cpu_type));
66     env = &cpu->env;
67 
68     cpu_clk->cb = NULL; /* We don't care about CPU clock frequency changes */
69     cpu_clk->opaque = env;
70     /* Set time-base frequency to sysclk */
71     tb_clk->cb = ppc_40x_timers_init(env, sysclk, PPC_INTERRUPT_PIT);
72     tb_clk->opaque = env;
73     ppc_dcr_init(env, NULL, NULL);
74     /* Register qemu callbacks */
75     qemu_register_reset(ppc4xx_reset, cpu);
76 
77     return cpu;
78 }
79 
80 /*****************************************************************************/
81 /* SDRAM controller */
82 typedef struct ppc4xx_sdram_t ppc4xx_sdram_t;
83 struct ppc4xx_sdram_t {
84     uint32_t addr;
85     int nbanks;
86     MemoryRegion containers[4]; /* used for clipping */
87     MemoryRegion *ram_memories;
88     hwaddr ram_bases[4];
89     hwaddr ram_sizes[4];
90     uint32_t besr0;
91     uint32_t besr1;
92     uint32_t bear;
93     uint32_t cfg;
94     uint32_t status;
95     uint32_t rtr;
96     uint32_t pmit;
97     uint32_t bcr[4];
98     uint32_t tr;
99     uint32_t ecccfg;
100     uint32_t eccesr;
101     qemu_irq irq;
102 };
103 
104 enum {
105     SDRAM0_CFGADDR = 0x010,
106     SDRAM0_CFGDATA = 0x011,
107 };
108 
109 /* XXX: TOFIX: some patches have made this code become inconsistent:
110  *      there are type inconsistencies, mixing hwaddr, target_ulong
111  *      and uint32_t
112  */
113 static uint32_t sdram_bcr (hwaddr ram_base,
114                            hwaddr ram_size)
115 {
116     uint32_t bcr;
117 
118     switch (ram_size) {
119     case 4 * MiB:
120         bcr = 0x00000000;
121         break;
122     case 8 * MiB:
123         bcr = 0x00020000;
124         break;
125     case 16 * MiB:
126         bcr = 0x00040000;
127         break;
128     case 32 * MiB:
129         bcr = 0x00060000;
130         break;
131     case 64 * MiB:
132         bcr = 0x00080000;
133         break;
134     case 128 * MiB:
135         bcr = 0x000A0000;
136         break;
137     case 256 * MiB:
138         bcr = 0x000C0000;
139         break;
140     default:
141         printf("%s: invalid RAM size " TARGET_FMT_plx "\n", __func__,
142                ram_size);
143         return 0x00000000;
144     }
145     bcr |= ram_base & 0xFF800000;
146     bcr |= 1;
147 
148     return bcr;
149 }
150 
151 static inline hwaddr sdram_base(uint32_t bcr)
152 {
153     return bcr & 0xFF800000;
154 }
155 
156 static target_ulong sdram_size (uint32_t bcr)
157 {
158     target_ulong size;
159     int sh;
160 
161     sh = (bcr >> 17) & 0x7;
162     if (sh == 7)
163         size = -1;
164     else
165         size = (4 * MiB) << sh;
166 
167     return size;
168 }
169 
170 static void sdram_set_bcr(ppc4xx_sdram_t *sdram, int i,
171                           uint32_t bcr, int enabled)
172 {
173     if (sdram->bcr[i] & 0x00000001) {
174         /* Unmap RAM */
175 #ifdef DEBUG_SDRAM
176         printf("%s: unmap RAM area " TARGET_FMT_plx " " TARGET_FMT_lx "\n",
177                __func__, sdram_base(sdram->bcr[i]), sdram_size(sdram->bcr[i]));
178 #endif
179         memory_region_del_subregion(get_system_memory(),
180                                     &sdram->containers[i]);
181         memory_region_del_subregion(&sdram->containers[i],
182                                     &sdram->ram_memories[i]);
183         object_unparent(OBJECT(&sdram->containers[i]));
184     }
185     sdram->bcr[i] = bcr & 0xFFDEE001;
186     if (enabled && (bcr & 0x00000001)) {
187 #ifdef DEBUG_SDRAM
188         printf("%s: Map RAM area " TARGET_FMT_plx " " TARGET_FMT_lx "\n",
189                __func__, sdram_base(bcr), sdram_size(bcr));
190 #endif
191         memory_region_init(&sdram->containers[i], NULL, "sdram-containers",
192                            sdram_size(bcr));
193         memory_region_add_subregion(&sdram->containers[i], 0,
194                                     &sdram->ram_memories[i]);
195         memory_region_add_subregion(get_system_memory(),
196                                     sdram_base(bcr),
197                                     &sdram->containers[i]);
198     }
199 }
200 
201 static void sdram_map_bcr (ppc4xx_sdram_t *sdram)
202 {
203     int i;
204 
205     for (i = 0; i < sdram->nbanks; i++) {
206         if (sdram->ram_sizes[i] != 0) {
207             sdram_set_bcr(sdram, i, sdram_bcr(sdram->ram_bases[i],
208                                               sdram->ram_sizes[i]), 1);
209         } else {
210             sdram_set_bcr(sdram, i, 0x00000000, 0);
211         }
212     }
213 }
214 
215 static void sdram_unmap_bcr (ppc4xx_sdram_t *sdram)
216 {
217     int i;
218 
219     for (i = 0; i < sdram->nbanks; i++) {
220 #ifdef DEBUG_SDRAM
221         printf("%s: Unmap RAM area " TARGET_FMT_plx " " TARGET_FMT_lx "\n",
222                __func__, sdram_base(sdram->bcr[i]), sdram_size(sdram->bcr[i]));
223 #endif
224         memory_region_del_subregion(get_system_memory(),
225                                     &sdram->ram_memories[i]);
226     }
227 }
228 
229 static uint32_t dcr_read_sdram (void *opaque, int dcrn)
230 {
231     ppc4xx_sdram_t *sdram;
232     uint32_t ret;
233 
234     sdram = opaque;
235     switch (dcrn) {
236     case SDRAM0_CFGADDR:
237         ret = sdram->addr;
238         break;
239     case SDRAM0_CFGDATA:
240         switch (sdram->addr) {
241         case 0x00: /* SDRAM_BESR0 */
242             ret = sdram->besr0;
243             break;
244         case 0x08: /* SDRAM_BESR1 */
245             ret = sdram->besr1;
246             break;
247         case 0x10: /* SDRAM_BEAR */
248             ret = sdram->bear;
249             break;
250         case 0x20: /* SDRAM_CFG */
251             ret = sdram->cfg;
252             break;
253         case 0x24: /* SDRAM_STATUS */
254             ret = sdram->status;
255             break;
256         case 0x30: /* SDRAM_RTR */
257             ret = sdram->rtr;
258             break;
259         case 0x34: /* SDRAM_PMIT */
260             ret = sdram->pmit;
261             break;
262         case 0x40: /* SDRAM_B0CR */
263             ret = sdram->bcr[0];
264             break;
265         case 0x44: /* SDRAM_B1CR */
266             ret = sdram->bcr[1];
267             break;
268         case 0x48: /* SDRAM_B2CR */
269             ret = sdram->bcr[2];
270             break;
271         case 0x4C: /* SDRAM_B3CR */
272             ret = sdram->bcr[3];
273             break;
274         case 0x80: /* SDRAM_TR */
275             ret = -1; /* ? */
276             break;
277         case 0x94: /* SDRAM_ECCCFG */
278             ret = sdram->ecccfg;
279             break;
280         case 0x98: /* SDRAM_ECCESR */
281             ret = sdram->eccesr;
282             break;
283         default: /* Error */
284             ret = -1;
285             break;
286         }
287         break;
288     default:
289         /* Avoid gcc warning */
290         ret = 0x00000000;
291         break;
292     }
293 
294     return ret;
295 }
296 
297 static void dcr_write_sdram (void *opaque, int dcrn, uint32_t val)
298 {
299     ppc4xx_sdram_t *sdram;
300 
301     sdram = opaque;
302     switch (dcrn) {
303     case SDRAM0_CFGADDR:
304         sdram->addr = val;
305         break;
306     case SDRAM0_CFGDATA:
307         switch (sdram->addr) {
308         case 0x00: /* SDRAM_BESR0 */
309             sdram->besr0 &= ~val;
310             break;
311         case 0x08: /* SDRAM_BESR1 */
312             sdram->besr1 &= ~val;
313             break;
314         case 0x10: /* SDRAM_BEAR */
315             sdram->bear = val;
316             break;
317         case 0x20: /* SDRAM_CFG */
318             val &= 0xFFE00000;
319             if (!(sdram->cfg & 0x80000000) && (val & 0x80000000)) {
320 #ifdef DEBUG_SDRAM
321                 printf("%s: enable SDRAM controller\n", __func__);
322 #endif
323                 /* validate all RAM mappings */
324                 sdram_map_bcr(sdram);
325                 sdram->status &= ~0x80000000;
326             } else if ((sdram->cfg & 0x80000000) && !(val & 0x80000000)) {
327 #ifdef DEBUG_SDRAM
328                 printf("%s: disable SDRAM controller\n", __func__);
329 #endif
330                 /* invalidate all RAM mappings */
331                 sdram_unmap_bcr(sdram);
332                 sdram->status |= 0x80000000;
333             }
334             if (!(sdram->cfg & 0x40000000) && (val & 0x40000000))
335                 sdram->status |= 0x40000000;
336             else if ((sdram->cfg & 0x40000000) && !(val & 0x40000000))
337                 sdram->status &= ~0x40000000;
338             sdram->cfg = val;
339             break;
340         case 0x24: /* SDRAM_STATUS */
341             /* Read-only register */
342             break;
343         case 0x30: /* SDRAM_RTR */
344             sdram->rtr = val & 0x3FF80000;
345             break;
346         case 0x34: /* SDRAM_PMIT */
347             sdram->pmit = (val & 0xF8000000) | 0x07C00000;
348             break;
349         case 0x40: /* SDRAM_B0CR */
350             sdram_set_bcr(sdram, 0, val, sdram->cfg & 0x80000000);
351             break;
352         case 0x44: /* SDRAM_B1CR */
353             sdram_set_bcr(sdram, 1, val, sdram->cfg & 0x80000000);
354             break;
355         case 0x48: /* SDRAM_B2CR */
356             sdram_set_bcr(sdram, 2, val, sdram->cfg & 0x80000000);
357             break;
358         case 0x4C: /* SDRAM_B3CR */
359             sdram_set_bcr(sdram, 3, val, sdram->cfg & 0x80000000);
360             break;
361         case 0x80: /* SDRAM_TR */
362             sdram->tr = val & 0x018FC01F;
363             break;
364         case 0x94: /* SDRAM_ECCCFG */
365             sdram->ecccfg = val & 0x00F00000;
366             break;
367         case 0x98: /* SDRAM_ECCESR */
368             val &= 0xFFF0F000;
369             if (sdram->eccesr == 0 && val != 0)
370                 qemu_irq_raise(sdram->irq);
371             else if (sdram->eccesr != 0 && val == 0)
372                 qemu_irq_lower(sdram->irq);
373             sdram->eccesr = val;
374             break;
375         default: /* Error */
376             break;
377         }
378         break;
379     }
380 }
381 
382 static void sdram_reset (void *opaque)
383 {
384     ppc4xx_sdram_t *sdram;
385 
386     sdram = opaque;
387     sdram->addr = 0x00000000;
388     sdram->bear = 0x00000000;
389     sdram->besr0 = 0x00000000; /* No error */
390     sdram->besr1 = 0x00000000; /* No error */
391     sdram->cfg = 0x00000000;
392     sdram->ecccfg = 0x00000000; /* No ECC */
393     sdram->eccesr = 0x00000000; /* No error */
394     sdram->pmit = 0x07C00000;
395     sdram->rtr = 0x05F00000;
396     sdram->tr = 0x00854009;
397     /* We pre-initialize RAM banks */
398     sdram->status = 0x00000000;
399     sdram->cfg = 0x00800000;
400 }
401 
402 void ppc4xx_sdram_init (CPUPPCState *env, qemu_irq irq, int nbanks,
403                         MemoryRegion *ram_memories,
404                         hwaddr *ram_bases,
405                         hwaddr *ram_sizes,
406                         int do_init)
407 {
408     ppc4xx_sdram_t *sdram;
409 
410     sdram = g_malloc0(sizeof(ppc4xx_sdram_t));
411     sdram->irq = irq;
412     sdram->nbanks = nbanks;
413     sdram->ram_memories = ram_memories;
414     memset(sdram->ram_bases, 0, 4 * sizeof(hwaddr));
415     memcpy(sdram->ram_bases, ram_bases,
416            nbanks * sizeof(hwaddr));
417     memset(sdram->ram_sizes, 0, 4 * sizeof(hwaddr));
418     memcpy(sdram->ram_sizes, ram_sizes,
419            nbanks * sizeof(hwaddr));
420     qemu_register_reset(&sdram_reset, sdram);
421     ppc_dcr_register(env, SDRAM0_CFGADDR,
422                      sdram, &dcr_read_sdram, &dcr_write_sdram);
423     ppc_dcr_register(env, SDRAM0_CFGDATA,
424                      sdram, &dcr_read_sdram, &dcr_write_sdram);
425     if (do_init)
426         sdram_map_bcr(sdram);
427 }
428 
429 /*
430  * Split RAM between SDRAM banks.
431  *
432  * sdram_bank_sizes[] must be in descending order, that is sizes[i] > sizes[i+1]
433  * and must be 0-terminated.
434  *
435  * The 4xx SDRAM controller supports a small number of banks, and each bank
436  * must be one of a small set of sizes. The number of banks and the supported
437  * sizes varies by SoC.
438  */
439 void ppc4xx_sdram_banks(MemoryRegion *ram, int nr_banks,
440                         MemoryRegion ram_memories[],
441                         hwaddr ram_bases[], hwaddr ram_sizes[],
442                         const ram_addr_t sdram_bank_sizes[])
443 {
444     ram_addr_t size_left = memory_region_size(ram);
445     ram_addr_t base = 0;
446     ram_addr_t bank_size;
447     int i;
448     int j;
449 
450     for (i = 0; i < nr_banks; i++) {
451         for (j = 0; sdram_bank_sizes[j] != 0; j++) {
452             bank_size = sdram_bank_sizes[j];
453             if (bank_size <= size_left) {
454                 char name[32];
455 
456                 ram_bases[i] = base;
457                 ram_sizes[i] = bank_size;
458                 base += bank_size;
459                 size_left -= bank_size;
460                 snprintf(name, sizeof(name), "ppc4xx.sdram%d", i);
461                 memory_region_init_alias(&ram_memories[i], NULL, name, ram,
462                                          ram_bases[i], ram_sizes[i]);
463                 break;
464             }
465         }
466         if (!size_left) {
467             /* No need to use the remaining banks. */
468             break;
469         }
470     }
471 
472     if (size_left) {
473         ram_addr_t used_size = memory_region_size(ram) - size_left;
474         GString *s = g_string_new(NULL);
475 
476         for (i = 0; sdram_bank_sizes[i]; i++) {
477             g_string_append_printf(s, "%" PRIi64 "%s",
478                                    sdram_bank_sizes[i] / MiB,
479                                    sdram_bank_sizes[i + 1] ? ", " : "");
480         }
481         error_report("at most %d bank%s of %s MiB each supported",
482                      nr_banks, nr_banks == 1 ? "" : "s", s->str);
483         error_printf("Possible valid RAM size: %" PRIi64 " MiB \n",
484             used_size ? used_size / MiB : sdram_bank_sizes[i - 1] / MiB);
485 
486         g_string_free(s, true);
487         exit(EXIT_FAILURE);
488     }
489 }
490 
491 /*****************************************************************************/
492 /* MAL */
493 
494 enum {
495     MAL0_CFG      = 0x180,
496     MAL0_ESR      = 0x181,
497     MAL0_IER      = 0x182,
498     MAL0_TXCASR   = 0x184,
499     MAL0_TXCARR   = 0x185,
500     MAL0_TXEOBISR = 0x186,
501     MAL0_TXDEIR   = 0x187,
502     MAL0_RXCASR   = 0x190,
503     MAL0_RXCARR   = 0x191,
504     MAL0_RXEOBISR = 0x192,
505     MAL0_RXDEIR   = 0x193,
506     MAL0_TXCTP0R  = 0x1A0,
507     MAL0_RXCTP0R  = 0x1C0,
508     MAL0_RCBS0    = 0x1E0,
509     MAL0_RCBS1    = 0x1E1,
510 };
511 
512 typedef struct ppc4xx_mal_t ppc4xx_mal_t;
513 struct ppc4xx_mal_t {
514     qemu_irq irqs[4];
515     uint32_t cfg;
516     uint32_t esr;
517     uint32_t ier;
518     uint32_t txcasr;
519     uint32_t txcarr;
520     uint32_t txeobisr;
521     uint32_t txdeir;
522     uint32_t rxcasr;
523     uint32_t rxcarr;
524     uint32_t rxeobisr;
525     uint32_t rxdeir;
526     uint32_t *txctpr;
527     uint32_t *rxctpr;
528     uint32_t *rcbs;
529     uint8_t  txcnum;
530     uint8_t  rxcnum;
531 };
532 
533 static void ppc4xx_mal_reset(void *opaque)
534 {
535     ppc4xx_mal_t *mal;
536 
537     mal = opaque;
538     mal->cfg = 0x0007C000;
539     mal->esr = 0x00000000;
540     mal->ier = 0x00000000;
541     mal->rxcasr = 0x00000000;
542     mal->rxdeir = 0x00000000;
543     mal->rxeobisr = 0x00000000;
544     mal->txcasr = 0x00000000;
545     mal->txdeir = 0x00000000;
546     mal->txeobisr = 0x00000000;
547 }
548 
549 static uint32_t dcr_read_mal(void *opaque, int dcrn)
550 {
551     ppc4xx_mal_t *mal;
552     uint32_t ret;
553 
554     mal = opaque;
555     switch (dcrn) {
556     case MAL0_CFG:
557         ret = mal->cfg;
558         break;
559     case MAL0_ESR:
560         ret = mal->esr;
561         break;
562     case MAL0_IER:
563         ret = mal->ier;
564         break;
565     case MAL0_TXCASR:
566         ret = mal->txcasr;
567         break;
568     case MAL0_TXCARR:
569         ret = mal->txcarr;
570         break;
571     case MAL0_TXEOBISR:
572         ret = mal->txeobisr;
573         break;
574     case MAL0_TXDEIR:
575         ret = mal->txdeir;
576         break;
577     case MAL0_RXCASR:
578         ret = mal->rxcasr;
579         break;
580     case MAL0_RXCARR:
581         ret = mal->rxcarr;
582         break;
583     case MAL0_RXEOBISR:
584         ret = mal->rxeobisr;
585         break;
586     case MAL0_RXDEIR:
587         ret = mal->rxdeir;
588         break;
589     default:
590         ret = 0;
591         break;
592     }
593     if (dcrn >= MAL0_TXCTP0R && dcrn < MAL0_TXCTP0R + mal->txcnum) {
594         ret = mal->txctpr[dcrn - MAL0_TXCTP0R];
595     }
596     if (dcrn >= MAL0_RXCTP0R && dcrn < MAL0_RXCTP0R + mal->rxcnum) {
597         ret = mal->rxctpr[dcrn - MAL0_RXCTP0R];
598     }
599     if (dcrn >= MAL0_RCBS0 && dcrn < MAL0_RCBS0 + mal->rxcnum) {
600         ret = mal->rcbs[dcrn - MAL0_RCBS0];
601     }
602 
603     return ret;
604 }
605 
606 static void dcr_write_mal(void *opaque, int dcrn, uint32_t val)
607 {
608     ppc4xx_mal_t *mal;
609 
610     mal = opaque;
611     switch (dcrn) {
612     case MAL0_CFG:
613         if (val & 0x80000000) {
614             ppc4xx_mal_reset(mal);
615         }
616         mal->cfg = val & 0x00FFC087;
617         break;
618     case MAL0_ESR:
619         /* Read/clear */
620         mal->esr &= ~val;
621         break;
622     case MAL0_IER:
623         mal->ier = val & 0x0000001F;
624         break;
625     case MAL0_TXCASR:
626         mal->txcasr = val & 0xF0000000;
627         break;
628     case MAL0_TXCARR:
629         mal->txcarr = val & 0xF0000000;
630         break;
631     case MAL0_TXEOBISR:
632         /* Read/clear */
633         mal->txeobisr &= ~val;
634         break;
635     case MAL0_TXDEIR:
636         /* Read/clear */
637         mal->txdeir &= ~val;
638         break;
639     case MAL0_RXCASR:
640         mal->rxcasr = val & 0xC0000000;
641         break;
642     case MAL0_RXCARR:
643         mal->rxcarr = val & 0xC0000000;
644         break;
645     case MAL0_RXEOBISR:
646         /* Read/clear */
647         mal->rxeobisr &= ~val;
648         break;
649     case MAL0_RXDEIR:
650         /* Read/clear */
651         mal->rxdeir &= ~val;
652         break;
653     }
654     if (dcrn >= MAL0_TXCTP0R && dcrn < MAL0_TXCTP0R + mal->txcnum) {
655         mal->txctpr[dcrn - MAL0_TXCTP0R] = val;
656     }
657     if (dcrn >= MAL0_RXCTP0R && dcrn < MAL0_RXCTP0R + mal->rxcnum) {
658         mal->rxctpr[dcrn - MAL0_RXCTP0R] = val;
659     }
660     if (dcrn >= MAL0_RCBS0 && dcrn < MAL0_RCBS0 + mal->rxcnum) {
661         mal->rcbs[dcrn - MAL0_RCBS0] = val & 0x000000FF;
662     }
663 }
664 
665 void ppc4xx_mal_init(CPUPPCState *env, uint8_t txcnum, uint8_t rxcnum,
666                      qemu_irq irqs[4])
667 {
668     ppc4xx_mal_t *mal;
669     int i;
670 
671     assert(txcnum <= 32 && rxcnum <= 32);
672     mal = g_malloc0(sizeof(*mal));
673     mal->txcnum = txcnum;
674     mal->rxcnum = rxcnum;
675     mal->txctpr = g_new0(uint32_t, txcnum);
676     mal->rxctpr = g_new0(uint32_t, rxcnum);
677     mal->rcbs = g_new0(uint32_t, rxcnum);
678     for (i = 0; i < 4; i++) {
679         mal->irqs[i] = irqs[i];
680     }
681     qemu_register_reset(&ppc4xx_mal_reset, mal);
682     ppc_dcr_register(env, MAL0_CFG,
683                      mal, &dcr_read_mal, &dcr_write_mal);
684     ppc_dcr_register(env, MAL0_ESR,
685                      mal, &dcr_read_mal, &dcr_write_mal);
686     ppc_dcr_register(env, MAL0_IER,
687                      mal, &dcr_read_mal, &dcr_write_mal);
688     ppc_dcr_register(env, MAL0_TXCASR,
689                      mal, &dcr_read_mal, &dcr_write_mal);
690     ppc_dcr_register(env, MAL0_TXCARR,
691                      mal, &dcr_read_mal, &dcr_write_mal);
692     ppc_dcr_register(env, MAL0_TXEOBISR,
693                      mal, &dcr_read_mal, &dcr_write_mal);
694     ppc_dcr_register(env, MAL0_TXDEIR,
695                      mal, &dcr_read_mal, &dcr_write_mal);
696     ppc_dcr_register(env, MAL0_RXCASR,
697                      mal, &dcr_read_mal, &dcr_write_mal);
698     ppc_dcr_register(env, MAL0_RXCARR,
699                      mal, &dcr_read_mal, &dcr_write_mal);
700     ppc_dcr_register(env, MAL0_RXEOBISR,
701                      mal, &dcr_read_mal, &dcr_write_mal);
702     ppc_dcr_register(env, MAL0_RXDEIR,
703                      mal, &dcr_read_mal, &dcr_write_mal);
704     for (i = 0; i < txcnum; i++) {
705         ppc_dcr_register(env, MAL0_TXCTP0R + i,
706                          mal, &dcr_read_mal, &dcr_write_mal);
707     }
708     for (i = 0; i < rxcnum; i++) {
709         ppc_dcr_register(env, MAL0_RXCTP0R + i,
710                          mal, &dcr_read_mal, &dcr_write_mal);
711     }
712     for (i = 0; i < rxcnum; i++) {
713         ppc_dcr_register(env, MAL0_RCBS0 + i,
714                          mal, &dcr_read_mal, &dcr_write_mal);
715     }
716 }
717