hw/ppc/ppc4xx_devs.c - qemu - Git at Google

 /*
  * QEMU PowerPC 4xx embedded processors shared devices emulation
  *
  * Copyright (c) 2007 Jocelyn Mayer
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */

 #include "qemu/osdep.h"
 #include "cpu.h"
 #include "hw/ppc/ppc4xx.h"
 #include "hw/qdev-properties.h"
 #include "qapi/error.h"

 /*****************************************************************************/
 /* MAL */

 enum {
     MAL0_CFG      = 0x180,
     MAL0_ESR      = 0x181,
     MAL0_IER      = 0x182,
     MAL0_TXCASR   = 0x184,
     MAL0_TXCARR   = 0x185,
     MAL0_TXEOBISR = 0x186,
     MAL0_TXDEIR   = 0x187,
     MAL0_RXCASR   = 0x190,
     MAL0_RXCARR   = 0x191,
     MAL0_RXEOBISR = 0x192,
     MAL0_RXDEIR   = 0x193,
     MAL0_TXCTP0R  = 0x1A0,
     MAL0_RXCTP0R  = 0x1C0,
     MAL0_RCBS0    = 0x1E0,
     MAL0_RCBS1    = 0x1E1,
 };

 static void ppc4xx_mal_reset(DeviceState *dev)
 {
     Ppc4xxMalState *mal = PPC4xx_MAL(dev);

     mal->cfg = 0x0007C000;
     mal->esr = 0x00000000;
     mal->ier = 0x00000000;
     mal->rxcasr = 0x00000000;
     mal->rxdeir = 0x00000000;
     mal->rxeobisr = 0x00000000;
     mal->txcasr = 0x00000000;
     mal->txdeir = 0x00000000;
     mal->txeobisr = 0x00000000;
 }

 static uint32_t dcr_read_mal(void *opaque, int dcrn)
 {
     Ppc4xxMalState *mal = opaque;
     uint32_t ret;

     switch (dcrn) {
     case MAL0_CFG:
         ret = mal->cfg;
         break;
     case MAL0_ESR:
         ret = mal->esr;
         break;
     case MAL0_IER:
         ret = mal->ier;
         break;
     case MAL0_TXCASR:
         ret = mal->txcasr;
         break;
     case MAL0_TXCARR:
         ret = mal->txcarr;
         break;
     case MAL0_TXEOBISR:
         ret = mal->txeobisr;
         break;
     case MAL0_TXDEIR:
         ret = mal->txdeir;
         break;
     case MAL0_RXCASR:
         ret = mal->rxcasr;
         break;
     case MAL0_RXCARR:
         ret = mal->rxcarr;
         break;
     case MAL0_RXEOBISR:
         ret = mal->rxeobisr;
         break;
     case MAL0_RXDEIR:
         ret = mal->rxdeir;
         break;
     default:
         ret = 0;
         break;
     }
     if (dcrn >= MAL0_TXCTP0R && dcrn < MAL0_TXCTP0R + mal->txcnum) {
         ret = mal->txctpr[dcrn - MAL0_TXCTP0R];
     }
     if (dcrn >= MAL0_RXCTP0R && dcrn < MAL0_RXCTP0R + mal->rxcnum) {
         ret = mal->rxctpr[dcrn - MAL0_RXCTP0R];
     }
     if (dcrn >= MAL0_RCBS0 && dcrn < MAL0_RCBS0 + mal->rxcnum) {
         ret = mal->rcbs[dcrn - MAL0_RCBS0];
     }

     return ret;
 }

 static void dcr_write_mal(void *opaque, int dcrn, uint32_t val)
 {
     Ppc4xxMalState *mal = opaque;

     switch (dcrn) {
     case MAL0_CFG:
         if (val & 0x80000000) {
             ppc4xx_mal_reset(DEVICE(mal));
         }
         mal->cfg = val & 0x00FFC087;
         break;
     case MAL0_ESR:
         /* Read/clear */
         mal->esr &= ~val;
         break;
     case MAL0_IER:
         mal->ier = val & 0x0000001F;
         break;
     case MAL0_TXCASR:
         mal->txcasr = val & 0xF0000000;
         break;
     case MAL0_TXCARR:
         mal->txcarr = val & 0xF0000000;
         break;
     case MAL0_TXEOBISR:
         /* Read/clear */
         mal->txeobisr &= ~val;
         break;
     case MAL0_TXDEIR:
         /* Read/clear */
         mal->txdeir &= ~val;
         break;
     case MAL0_RXCASR:
         mal->rxcasr = val & 0xC0000000;
         break;
     case MAL0_RXCARR:
         mal->rxcarr = val & 0xC0000000;
         break;
     case MAL0_RXEOBISR:
         /* Read/clear */
         mal->rxeobisr &= ~val;
         break;
     case MAL0_RXDEIR:
         /* Read/clear */
         mal->rxdeir &= ~val;
         break;
     }
     if (dcrn >= MAL0_TXCTP0R && dcrn < MAL0_TXCTP0R + mal->txcnum) {
         mal->txctpr[dcrn - MAL0_TXCTP0R] = val;
     }
     if (dcrn >= MAL0_RXCTP0R && dcrn < MAL0_RXCTP0R + mal->rxcnum) {
         mal->rxctpr[dcrn - MAL0_RXCTP0R] = val;
     }
     if (dcrn >= MAL0_RCBS0 && dcrn < MAL0_RCBS0 + mal->rxcnum) {
         mal->rcbs[dcrn - MAL0_RCBS0] = val & 0x000000FF;
     }
 }

 static void ppc4xx_mal_realize(DeviceState *dev, Error **errp)
 {
     Ppc4xxMalState *mal = PPC4xx_MAL(dev);
     Ppc4xxDcrDeviceState *dcr = PPC4xx_DCR_DEVICE(dev);
     int i;

     if (mal->txcnum > 32 || mal->rxcnum > 32) {
         error_setg(errp, "invalid TXC/RXC number");
         return;
     }

     mal->txctpr = g_new0(uint32_t, mal->txcnum);
     mal->rxctpr = g_new0(uint32_t, mal->rxcnum);
     mal->rcbs = g_new0(uint32_t, mal->rxcnum);

     for (i = 0; i < ARRAY_SIZE(mal->irqs); i++) {
         sysbus_init_irq(SYS_BUS_DEVICE(dev), &mal->irqs[i]);
     }

     ppc4xx_dcr_register(dcr, MAL0_CFG, mal, &dcr_read_mal, &dcr_write_mal);
     ppc4xx_dcr_register(dcr, MAL0_ESR, mal, &dcr_read_mal, &dcr_write_mal);
     ppc4xx_dcr_register(dcr, MAL0_IER, mal, &dcr_read_mal, &dcr_write_mal);
     ppc4xx_dcr_register(dcr, MAL0_TXCASR, mal, &dcr_read_mal, &dcr_write_mal);
     ppc4xx_dcr_register(dcr, MAL0_TXCARR, mal, &dcr_read_mal, &dcr_write_mal);
     ppc4xx_dcr_register(dcr, MAL0_TXEOBISR, mal, &dcr_read_mal, &dcr_write_mal);
     ppc4xx_dcr_register(dcr, MAL0_TXDEIR, mal, &dcr_read_mal, &dcr_write_mal);
     ppc4xx_dcr_register(dcr, MAL0_RXCASR, mal, &dcr_read_mal, &dcr_write_mal);
     ppc4xx_dcr_register(dcr, MAL0_RXCARR, mal, &dcr_read_mal, &dcr_write_mal);
     ppc4xx_dcr_register(dcr, MAL0_RXEOBISR, mal, &dcr_read_mal, &dcr_write_mal);
     ppc4xx_dcr_register(dcr, MAL0_RXDEIR, mal, &dcr_read_mal, &dcr_write_mal);
     for (i = 0; i < mal->txcnum; i++) {
         ppc4xx_dcr_register(dcr, MAL0_TXCTP0R + i,
                             mal, &dcr_read_mal, &dcr_write_mal);
     }
     for (i = 0; i < mal->rxcnum; i++) {
         ppc4xx_dcr_register(dcr, MAL0_RXCTP0R + i,
                             mal, &dcr_read_mal, &dcr_write_mal);
     }
     for (i = 0; i < mal->rxcnum; i++) {
         ppc4xx_dcr_register(dcr, MAL0_RCBS0 + i,
                             mal, &dcr_read_mal, &dcr_write_mal);
     }
 }

 static void ppc4xx_mal_finalize(Object *obj)
 {
     Ppc4xxMalState *mal = PPC4xx_MAL(obj);

     g_free(mal->rcbs);
     g_free(mal->rxctpr);
     g_free(mal->txctpr);
 }

 static Property ppc4xx_mal_properties[] = {
     DEFINE_PROP_UINT8("txc-num", Ppc4xxMalState, txcnum, 0),
     DEFINE_PROP_UINT8("rxc-num", Ppc4xxMalState, rxcnum, 0),
     DEFINE_PROP_END_OF_LIST(),
 };

 static void ppc4xx_mal_class_init(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);

     dc->realize = ppc4xx_mal_realize;
     device_class_set_legacy_reset(dc, ppc4xx_mal_reset);
     /* Reason: only works as function of a ppc4xx SoC */
     dc->user_creatable = false;
     device_class_set_props(dc, ppc4xx_mal_properties);
 }

 /*****************************************************************************/
 /* Peripheral local bus arbitrer */
 enum {
     PLB3A0_ACR = 0x077,
     PLB4A0_ACR = 0x081,
     PLB0_BESR  = 0x084,
     PLB0_BEAR  = 0x086,
     PLB0_ACR   = 0x087,
     PLB4A1_ACR = 0x089,
 };

 static uint32_t dcr_read_plb(void *opaque, int dcrn)
 {
     Ppc4xxPlbState *plb = opaque;
     uint32_t ret;

     switch (dcrn) {
     case PLB0_ACR:
         ret = plb->acr;
         break;
     case PLB0_BEAR:
         ret = plb->bear;
         break;
     case PLB0_BESR:
         ret = plb->besr;
         break;
     default:
         /* Avoid gcc warning */
         ret = 0;
         break;
     }

     return ret;
 }

 static void dcr_write_plb(void *opaque, int dcrn, uint32_t val)
 {
     Ppc4xxPlbState *plb = opaque;

     switch (dcrn) {
     case PLB0_ACR:
         /*
          * We don't care about the actual parameters written as
          * we don't manage any priorities on the bus
          */
         plb->acr = val & 0xF8000000;
         break;
     case PLB0_BEAR:
         /* Read only */
         break;
     case PLB0_BESR:
         /* Write-clear */
         plb->besr &= ~val;
         break;
     }
 }

 static void ppc405_plb_reset(DeviceState *dev)
 {
     Ppc4xxPlbState *plb = PPC4xx_PLB(dev);

     plb->acr = 0x00000000;
     plb->bear = 0x00000000;
     plb->besr = 0x00000000;
 }

 static void ppc405_plb_realize(DeviceState *dev, Error **errp)
 {
     Ppc4xxPlbState *plb = PPC4xx_PLB(dev);
     Ppc4xxDcrDeviceState *dcr = PPC4xx_DCR_DEVICE(dev);

     ppc4xx_dcr_register(dcr, PLB3A0_ACR, plb, &dcr_read_plb, &dcr_write_plb);
     ppc4xx_dcr_register(dcr, PLB4A0_ACR, plb, &dcr_read_plb, &dcr_write_plb);
     ppc4xx_dcr_register(dcr, PLB0_ACR, plb, &dcr_read_plb, &dcr_write_plb);
     ppc4xx_dcr_register(dcr, PLB0_BEAR, plb, &dcr_read_plb, &dcr_write_plb);
     ppc4xx_dcr_register(dcr, PLB0_BESR, plb, &dcr_read_plb, &dcr_write_plb);
     ppc4xx_dcr_register(dcr, PLB4A1_ACR, plb, &dcr_read_plb, &dcr_write_plb);
 }

 static void ppc405_plb_class_init(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);

     dc->realize = ppc405_plb_realize;
     device_class_set_legacy_reset(dc, ppc405_plb_reset);
     /* Reason: only works as function of a ppc4xx SoC */
     dc->user_creatable = false;
 }

 /*****************************************************************************/
 /* Peripheral controller */
 enum {
     EBC0_CFGADDR = 0x012,
     EBC0_CFGDATA = 0x013,
 };

 static uint32_t dcr_read_ebc(void *opaque, int dcrn)
 {
     Ppc4xxEbcState *ebc = opaque;
     uint32_t ret;

     switch (dcrn) {
     case EBC0_CFGADDR:
         ret = ebc->addr;
         break;
     case EBC0_CFGDATA:
         switch (ebc->addr) {
         case 0x00: /* B0CR */
             ret = ebc->bcr[0];
             break;
         case 0x01: /* B1CR */
             ret = ebc->bcr[1];
             break;
         case 0x02: /* B2CR */
             ret = ebc->bcr[2];
             break;
         case 0x03: /* B3CR */
             ret = ebc->bcr[3];
             break;
         case 0x04: /* B4CR */
             ret = ebc->bcr[4];
             break;
         case 0x05: /* B5CR */
             ret = ebc->bcr[5];
             break;
         case 0x06: /* B6CR */
             ret = ebc->bcr[6];
             break;
         case 0x07: /* B7CR */
             ret = ebc->bcr[7];
             break;
         case 0x10: /* B0AP */
             ret = ebc->bap[0];
             break;
         case 0x11: /* B1AP */
             ret = ebc->bap[1];
             break;
         case 0x12: /* B2AP */
             ret = ebc->bap[2];
             break;
         case 0x13: /* B3AP */
             ret = ebc->bap[3];
             break;
         case 0x14: /* B4AP */
             ret = ebc->bap[4];
             break;
         case 0x15: /* B5AP */
             ret = ebc->bap[5];
             break;
         case 0x16: /* B6AP */
             ret = ebc->bap[6];
             break;
         case 0x17: /* B7AP */
             ret = ebc->bap[7];
             break;
         case 0x20: /* BEAR */
             ret = ebc->bear;
             break;
         case 0x21: /* BESR0 */
             ret = ebc->besr0;
             break;
         case 0x22: /* BESR1 */
             ret = ebc->besr1;
             break;
         case 0x23: /* CFG */
             ret = ebc->cfg;
             break;
         default:
             ret = 0x00000000;
             break;
         }
         break;
     default:
         ret = 0x00000000;
         break;
     }

     return ret;
 }

 static void dcr_write_ebc(void *opaque, int dcrn, uint32_t val)
 {
     Ppc4xxEbcState *ebc = opaque;

     switch (dcrn) {
     case EBC0_CFGADDR:
         ebc->addr = val;
         break;
     case EBC0_CFGDATA:
         switch (ebc->addr) {
         case 0x00: /* B0CR */
             break;
         case 0x01: /* B1CR */
             break;
         case 0x02: /* B2CR */
             break;
         case 0x03: /* B3CR */
             break;
         case 0x04: /* B4CR */
             break;
         case 0x05: /* B5CR */
             break;
         case 0x06: /* B6CR */
             break;
         case 0x07: /* B7CR */
             break;
         case 0x10: /* B0AP */
             break;
         case 0x11: /* B1AP */
             break;
         case 0x12: /* B2AP */
             break;
         case 0x13: /* B3AP */
             break;
         case 0x14: /* B4AP */
             break;
         case 0x15: /* B5AP */
             break;
         case 0x16: /* B6AP */
             break;
         case 0x17: /* B7AP */
             break;
         case 0x20: /* BEAR */
             break;
         case 0x21: /* BESR0 */
             break;
         case 0x22: /* BESR1 */
             break;
         case 0x23: /* CFG */
             break;
         default:
             break;
         }
         break;
     default:
         break;
     }
 }

 static void ppc405_ebc_reset(DeviceState *dev)
 {
     Ppc4xxEbcState *ebc = PPC4xx_EBC(dev);
     int i;

     ebc->addr = 0x00000000;
     ebc->bap[0] = 0x7F8FFE80;
     ebc->bcr[0] = 0xFFE28000;
     for (i = 0; i < 8; i++) {
         ebc->bap[i] = 0x00000000;
         ebc->bcr[i] = 0x00000000;
     }
     ebc->besr0 = 0x00000000;
     ebc->besr1 = 0x00000000;
     ebc->cfg = 0x80400000;
 }

 static void ppc405_ebc_realize(DeviceState *dev, Error **errp)
 {
     Ppc4xxEbcState *ebc = PPC4xx_EBC(dev);
     Ppc4xxDcrDeviceState *dcr = PPC4xx_DCR_DEVICE(dev);

     ppc4xx_dcr_register(dcr, EBC0_CFGADDR, ebc, &dcr_read_ebc, &dcr_write_ebc);
     ppc4xx_dcr_register(dcr, EBC0_CFGDATA, ebc, &dcr_read_ebc, &dcr_write_ebc);
 }

 static void ppc405_ebc_class_init(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);

     dc->realize = ppc405_ebc_realize;
     device_class_set_legacy_reset(dc, ppc405_ebc_reset);
     /* Reason: only works as function of a ppc4xx SoC */
     dc->user_creatable = false;
 }

 /* PPC4xx_DCR_DEVICE */

 void ppc4xx_dcr_register(Ppc4xxDcrDeviceState *dev, int dcrn, void *opaque,
                          dcr_read_cb dcr_read, dcr_write_cb dcr_write)
 {
     assert(dev->cpu);
     ppc_dcr_register(&dev->cpu->env, dcrn, opaque, dcr_read, dcr_write);
 }

 bool ppc4xx_dcr_realize(Ppc4xxDcrDeviceState *dev, PowerPCCPU *cpu,
                         Error **errp)
 {
     object_property_set_link(OBJECT(dev), "cpu", OBJECT(cpu), &error_abort);
     return sysbus_realize(SYS_BUS_DEVICE(dev), errp);
 }

 static Property ppc4xx_dcr_properties[] = {
     DEFINE_PROP_LINK("cpu", Ppc4xxDcrDeviceState, cpu, TYPE_POWERPC_CPU,
                      PowerPCCPU *),
     DEFINE_PROP_END_OF_LIST(),
 };

 static void ppc4xx_dcr_class_init(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);

     device_class_set_props(dc, ppc4xx_dcr_properties);
 }

 static const TypeInfo ppc4xx_types[] = {
     {
         .name           = TYPE_PPC4xx_MAL,
         .parent         = TYPE_PPC4xx_DCR_DEVICE,
         .instance_size  = sizeof(Ppc4xxMalState),
         .instance_finalize = ppc4xx_mal_finalize,
         .class_init     = ppc4xx_mal_class_init,
     }, {
         .name           = TYPE_PPC4xx_PLB,
         .parent         = TYPE_PPC4xx_DCR_DEVICE,
         .instance_size  = sizeof(Ppc4xxPlbState),
         .class_init     = ppc405_plb_class_init,
     }, {
         .name           = TYPE_PPC4xx_EBC,
         .parent         = TYPE_PPC4xx_DCR_DEVICE,
         .instance_size  = sizeof(Ppc4xxEbcState),
         .class_init     = ppc405_ebc_class_init,
     }, {
         .name           = TYPE_PPC4xx_DCR_DEVICE,
         .parent         = TYPE_SYS_BUS_DEVICE,
         .instance_size  = sizeof(Ppc4xxDcrDeviceState),
         .class_init     = ppc4xx_dcr_class_init,
         .abstract       = true,
     }
 };

 DEFINE_TYPES(ppc4xx_types)
	/*
	* QEMU PowerPC 4xx embedded processors shared devices emulation
	*
	* Copyright (c) 2007 Jocelyn Mayer
	*
	* Permission is hereby granted, free of charge, to any person obtaining a copy
	* of this software and associated documentation files (the "Software"), to deal
	* in the Software without restriction, including without limitation the rights
	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	* copies of the Software, and to permit persons to whom the Software is
	* furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included in
	* all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	* THE SOFTWARE.
	*/

	#include "qemu/osdep.h"
	#include "cpu.h"
	#include "hw/ppc/ppc4xx.h"
	#include "hw/qdev-properties.h"
	#include "qapi/error.h"

	/*****************************************************************************/
	/* MAL */

	enum {
	MAL0_CFG = 0x180,
	MAL0_ESR = 0x181,
	MAL0_IER = 0x182,
	MAL0_TXCASR = 0x184,
	MAL0_TXCARR = 0x185,
	MAL0_TXEOBISR = 0x186,
	MAL0_TXDEIR = 0x187,
	MAL0_RXCASR = 0x190,
	MAL0_RXCARR = 0x191,
	MAL0_RXEOBISR = 0x192,
	MAL0_RXDEIR = 0x193,
	MAL0_TXCTP0R = 0x1A0,
	MAL0_RXCTP0R = 0x1C0,
	MAL0_RCBS0 = 0x1E0,
	MAL0_RCBS1 = 0x1E1,
	};

	static void ppc4xx_mal_reset(DeviceState *dev)
	{
	Ppc4xxMalState *mal = PPC4xx_MAL(dev);

	mal->cfg = 0x0007C000;
	mal->esr = 0x00000000;
	mal->ier = 0x00000000;
	mal->rxcasr = 0x00000000;
	mal->rxdeir = 0x00000000;
	mal->rxeobisr = 0x00000000;
	mal->txcasr = 0x00000000;
	mal->txdeir = 0x00000000;
	mal->txeobisr = 0x00000000;
	}

	static uint32_t dcr_read_mal(void *opaque, int dcrn)
	{
	Ppc4xxMalState *mal = opaque;
	uint32_t ret;

	switch (dcrn) {
	case MAL0_CFG:
	ret = mal->cfg;
	break;
	case MAL0_ESR:
	ret = mal->esr;
	break;
	case MAL0_IER:
	ret = mal->ier;
	break;
	case MAL0_TXCASR:
	ret = mal->txcasr;
	break;
	case MAL0_TXCARR:
	ret = mal->txcarr;
	break;
	case MAL0_TXEOBISR:
	ret = mal->txeobisr;
	break;
	case MAL0_TXDEIR:
	ret = mal->txdeir;
	break;
	case MAL0_RXCASR:
	ret = mal->rxcasr;
	break;
	case MAL0_RXCARR:
	ret = mal->rxcarr;
	break;
	case MAL0_RXEOBISR:
	ret = mal->rxeobisr;
	break;
	case MAL0_RXDEIR:
	ret = mal->rxdeir;
	break;
	default:
	ret = 0;
	break;
	}
	if (dcrn >= MAL0_TXCTP0R && dcrn < MAL0_TXCTP0R + mal->txcnum) {
	ret = mal->txctpr[dcrn - MAL0_TXCTP0R];
	}
	if (dcrn >= MAL0_RXCTP0R && dcrn < MAL0_RXCTP0R + mal->rxcnum) {
	ret = mal->rxctpr[dcrn - MAL0_RXCTP0R];
	}
	if (dcrn >= MAL0_RCBS0 && dcrn < MAL0_RCBS0 + mal->rxcnum) {
	ret = mal->rcbs[dcrn - MAL0_RCBS0];
	}

	return ret;
	}

	static void dcr_write_mal(void *opaque, int dcrn, uint32_t val)
	{
	Ppc4xxMalState *mal = opaque;

	switch (dcrn) {
	case MAL0_CFG:
	if (val & 0x80000000) {
	ppc4xx_mal_reset(DEVICE(mal));
	}
	mal->cfg = val & 0x00FFC087;
	break;
	case MAL0_ESR:
	/* Read/clear */
	mal->esr &= ~val;
	break;
	case MAL0_IER:
	mal->ier = val & 0x0000001F;
	break;
	case MAL0_TXCASR:
	mal->txcasr = val & 0xF0000000;
	break;
	case MAL0_TXCARR:
	mal->txcarr = val & 0xF0000000;
	break;
	case MAL0_TXEOBISR:
	/* Read/clear */
	mal->txeobisr &= ~val;
	break;
	case MAL0_TXDEIR:
	/* Read/clear */
	mal->txdeir &= ~val;
	break;
	case MAL0_RXCASR:
	mal->rxcasr = val & 0xC0000000;
	break;
	case MAL0_RXCARR:
	mal->rxcarr = val & 0xC0000000;
	break;
	case MAL0_RXEOBISR:
	/* Read/clear */
	mal->rxeobisr &= ~val;
	break;
	case MAL0_RXDEIR:
	/* Read/clear */
	mal->rxdeir &= ~val;
	break;
	}
	if (dcrn >= MAL0_TXCTP0R && dcrn < MAL0_TXCTP0R + mal->txcnum) {
	mal->txctpr[dcrn - MAL0_TXCTP0R] = val;
	}
	if (dcrn >= MAL0_RXCTP0R && dcrn < MAL0_RXCTP0R + mal->rxcnum) {
	mal->rxctpr[dcrn - MAL0_RXCTP0R] = val;
	}
	if (dcrn >= MAL0_RCBS0 && dcrn < MAL0_RCBS0 + mal->rxcnum) {
	mal->rcbs[dcrn - MAL0_RCBS0] = val & 0x000000FF;
	}
	}

	static void ppc4xx_mal_realize(DeviceState dev, Error *errp)
	{
	Ppc4xxMalState *mal = PPC4xx_MAL(dev);
	Ppc4xxDcrDeviceState *dcr = PPC4xx_DCR_DEVICE(dev);
	int i;

	if (mal->txcnum > 32 \|\| mal->rxcnum > 32) {
	error_setg(errp, "invalid TXC/RXC number");
	return;
	}

	mal->txctpr = g_new0(uint32_t, mal->txcnum);
	mal->rxctpr = g_new0(uint32_t, mal->rxcnum);
	mal->rcbs = g_new0(uint32_t, mal->rxcnum);

	for (i = 0; i < ARRAY_SIZE(mal->irqs); i++) {
	sysbus_init_irq(SYS_BUS_DEVICE(dev), &mal->irqs[i]);
	}

	ppc4xx_dcr_register(dcr, MAL0_CFG, mal, &dcr_read_mal, &dcr_write_mal);
	ppc4xx_dcr_register(dcr, MAL0_ESR, mal, &dcr_read_mal, &dcr_write_mal);
	ppc4xx_dcr_register(dcr, MAL0_IER, mal, &dcr_read_mal, &dcr_write_mal);
	ppc4xx_dcr_register(dcr, MAL0_TXCASR, mal, &dcr_read_mal, &dcr_write_mal);
	ppc4xx_dcr_register(dcr, MAL0_TXCARR, mal, &dcr_read_mal, &dcr_write_mal);
	ppc4xx_dcr_register(dcr, MAL0_TXEOBISR, mal, &dcr_read_mal, &dcr_write_mal);
	ppc4xx_dcr_register(dcr, MAL0_TXDEIR, mal, &dcr_read_mal, &dcr_write_mal);
	ppc4xx_dcr_register(dcr, MAL0_RXCASR, mal, &dcr_read_mal, &dcr_write_mal);
	ppc4xx_dcr_register(dcr, MAL0_RXCARR, mal, &dcr_read_mal, &dcr_write_mal);
	ppc4xx_dcr_register(dcr, MAL0_RXEOBISR, mal, &dcr_read_mal, &dcr_write_mal);
	ppc4xx_dcr_register(dcr, MAL0_RXDEIR, mal, &dcr_read_mal, &dcr_write_mal);
	for (i = 0; i < mal->txcnum; i++) {
	ppc4xx_dcr_register(dcr, MAL0_TXCTP0R + i,
	mal, &dcr_read_mal, &dcr_write_mal);
	}
	for (i = 0; i < mal->rxcnum; i++) {
	ppc4xx_dcr_register(dcr, MAL0_RXCTP0R + i,
	mal, &dcr_read_mal, &dcr_write_mal);
	}
	for (i = 0; i < mal->rxcnum; i++) {
	ppc4xx_dcr_register(dcr, MAL0_RCBS0 + i,
	mal, &dcr_read_mal, &dcr_write_mal);
	}
	}

	static void ppc4xx_mal_finalize(Object *obj)
	{
	Ppc4xxMalState *mal = PPC4xx_MAL(obj);

	g_free(mal->rcbs);
	g_free(mal->rxctpr);
	g_free(mal->txctpr);
	}

	static Property ppc4xx_mal_properties[] = {
	DEFINE_PROP_UINT8("txc-num", Ppc4xxMalState, txcnum, 0),
	DEFINE_PROP_UINT8("rxc-num", Ppc4xxMalState, rxcnum, 0),
	DEFINE_PROP_END_OF_LIST(),
	};

	static void ppc4xx_mal_class_init(ObjectClass oc, void data)
	{
	DeviceClass *dc = DEVICE_CLASS(oc);

	dc->realize = ppc4xx_mal_realize;
	device_class_set_legacy_reset(dc, ppc4xx_mal_reset);
	/* Reason: only works as function of a ppc4xx SoC */
	dc->user_creatable = false;
	device_class_set_props(dc, ppc4xx_mal_properties);
	}

	/*****************************************************************************/
	/* Peripheral local bus arbitrer */
	enum {
	PLB3A0_ACR = 0x077,
	PLB4A0_ACR = 0x081,
	PLB0_BESR = 0x084,
	PLB0_BEAR = 0x086,
	PLB0_ACR = 0x087,
	PLB4A1_ACR = 0x089,
	};

	static uint32_t dcr_read_plb(void *opaque, int dcrn)
	{
	Ppc4xxPlbState *plb = opaque;
	uint32_t ret;

	switch (dcrn) {
	case PLB0_ACR:
	ret = plb->acr;
	break;
	case PLB0_BEAR:
	ret = plb->bear;
	break;
	case PLB0_BESR:
	ret = plb->besr;
	break;
	default:
	/* Avoid gcc warning */
	ret = 0;
	break;
	}

	return ret;
	}

	static void dcr_write_plb(void *opaque, int dcrn, uint32_t val)
	{
	Ppc4xxPlbState *plb = opaque;

	switch (dcrn) {
	case PLB0_ACR:
	/*
	* We don't care about the actual parameters written as
	* we don't manage any priorities on the bus
	*/
	plb->acr = val & 0xF8000000;
	break;
	case PLB0_BEAR:
	/* Read only */
	break;
	case PLB0_BESR:
	/* Write-clear */
	plb->besr &= ~val;
	break;
	}
	}

	static void ppc405_plb_reset(DeviceState *dev)
	{
	Ppc4xxPlbState *plb = PPC4xx_PLB(dev);

	plb->acr = 0x00000000;
	plb->bear = 0x00000000;
	plb->besr = 0x00000000;
	}

	static void ppc405_plb_realize(DeviceState dev, Error *errp)
	{
	Ppc4xxPlbState *plb = PPC4xx_PLB(dev);
	Ppc4xxDcrDeviceState *dcr = PPC4xx_DCR_DEVICE(dev);

	ppc4xx_dcr_register(dcr, PLB3A0_ACR, plb, &dcr_read_plb, &dcr_write_plb);
	ppc4xx_dcr_register(dcr, PLB4A0_ACR, plb, &dcr_read_plb, &dcr_write_plb);
	ppc4xx_dcr_register(dcr, PLB0_ACR, plb, &dcr_read_plb, &dcr_write_plb);
	ppc4xx_dcr_register(dcr, PLB0_BEAR, plb, &dcr_read_plb, &dcr_write_plb);
	ppc4xx_dcr_register(dcr, PLB0_BESR, plb, &dcr_read_plb, &dcr_write_plb);
	ppc4xx_dcr_register(dcr, PLB4A1_ACR, plb, &dcr_read_plb, &dcr_write_plb);
	}

	static void ppc405_plb_class_init(ObjectClass oc, void data)
	{
	DeviceClass *dc = DEVICE_CLASS(oc);

	dc->realize = ppc405_plb_realize;
	device_class_set_legacy_reset(dc, ppc405_plb_reset);
	/* Reason: only works as function of a ppc4xx SoC */
	dc->user_creatable = false;
	}

	/*****************************************************************************/
	/* Peripheral controller */
	enum {
	EBC0_CFGADDR = 0x012,
	EBC0_CFGDATA = 0x013,
	};

	static uint32_t dcr_read_ebc(void *opaque, int dcrn)
	{
	Ppc4xxEbcState *ebc = opaque;
	uint32_t ret;

	switch (dcrn) {
	case EBC0_CFGADDR:
	ret = ebc->addr;
	break;
	case EBC0_CFGDATA:
	switch (ebc->addr) {
	case 0x00: /* B0CR */
	ret = ebc->bcr[0];
	break;
	case 0x01: /* B1CR */
	ret = ebc->bcr[1];
	break;
	case 0x02: /* B2CR */
	ret = ebc->bcr[2];
	break;
	case 0x03: /* B3CR */
	ret = ebc->bcr[3];
	break;
	case 0x04: /* B4CR */
	ret = ebc->bcr[4];
	break;
	case 0x05: /* B5CR */
	ret = ebc->bcr[5];
	break;
	case 0x06: /* B6CR */
	ret = ebc->bcr[6];
	break;
	case 0x07: /* B7CR */
	ret = ebc->bcr[7];
	break;
	case 0x10: /* B0AP */
	ret = ebc->bap[0];
	break;
	case 0x11: /* B1AP */
	ret = ebc->bap[1];
	break;
	case 0x12: /* B2AP */
	ret = ebc->bap[2];
	break;
	case 0x13: /* B3AP */
	ret = ebc->bap[3];
	break;
	case 0x14: /* B4AP */
	ret = ebc->bap[4];
	break;
	case 0x15: /* B5AP */
	ret = ebc->bap[5];
	break;
	case 0x16: /* B6AP */
	ret = ebc->bap[6];
	break;
	case 0x17: /* B7AP */
	ret = ebc->bap[7];
	break;
	case 0x20: /* BEAR */
	ret = ebc->bear;
	break;
	case 0x21: /* BESR0 */
	ret = ebc->besr0;
	break;
	case 0x22: /* BESR1 */
	ret = ebc->besr1;
	break;
	case 0x23: /* CFG */
	ret = ebc->cfg;
	break;
	default:
	ret = 0x00000000;
	break;
	}
	break;
	default:
	ret = 0x00000000;
	break;
	}

	return ret;
	}

	static void dcr_write_ebc(void *opaque, int dcrn, uint32_t val)
	{
	Ppc4xxEbcState *ebc = opaque;

	switch (dcrn) {
	case EBC0_CFGADDR:
	ebc->addr = val;
	break;
	case EBC0_CFGDATA:
	switch (ebc->addr) {
	case 0x00: /* B0CR */
	break;
	case 0x01: /* B1CR */
	break;
	case 0x02: /* B2CR */
	break;
	case 0x03: /* B3CR */
	break;
	case 0x04: /* B4CR */
	break;
	case 0x05: /* B5CR */
	break;
	case 0x06: /* B6CR */
	break;
	case 0x07: /* B7CR */
	break;
	case 0x10: /* B0AP */
	break;
	case 0x11: /* B1AP */
	break;
	case 0x12: /* B2AP */
	break;
	case 0x13: /* B3AP */
	break;
	case 0x14: /* B4AP */
	break;
	case 0x15: /* B5AP */
	break;
	case 0x16: /* B6AP */
	break;
	case 0x17: /* B7AP */
	break;
	case 0x20: /* BEAR */
	break;
	case 0x21: /* BESR0 */
	break;
	case 0x22: /* BESR1 */
	break;
	case 0x23: /* CFG */
	break;
	default:
	break;
	}
	break;
	default:
	break;
	}
	}

	static void ppc405_ebc_reset(DeviceState *dev)
	{
	Ppc4xxEbcState *ebc = PPC4xx_EBC(dev);
	int i;

	ebc->addr = 0x00000000;
	ebc->bap[0] = 0x7F8FFE80;
	ebc->bcr[0] = 0xFFE28000;
	for (i = 0; i < 8; i++) {
	ebc->bap[i] = 0x00000000;
	ebc->bcr[i] = 0x00000000;
	}
	ebc->besr0 = 0x00000000;
	ebc->besr1 = 0x00000000;
	ebc->cfg = 0x80400000;
	}

	static void ppc405_ebc_realize(DeviceState dev, Error *errp)
	{
	Ppc4xxEbcState *ebc = PPC4xx_EBC(dev);
	Ppc4xxDcrDeviceState *dcr = PPC4xx_DCR_DEVICE(dev);

	ppc4xx_dcr_register(dcr, EBC0_CFGADDR, ebc, &dcr_read_ebc, &dcr_write_ebc);
	ppc4xx_dcr_register(dcr, EBC0_CFGDATA, ebc, &dcr_read_ebc, &dcr_write_ebc);
	}

	static void ppc405_ebc_class_init(ObjectClass oc, void data)
	{
	DeviceClass *dc = DEVICE_CLASS(oc);

	dc->realize = ppc405_ebc_realize;
	device_class_set_legacy_reset(dc, ppc405_ebc_reset);
	/* Reason: only works as function of a ppc4xx SoC */
	dc->user_creatable = false;
	}

	/* PPC4xx_DCR_DEVICE */

	void ppc4xx_dcr_register(Ppc4xxDcrDeviceState dev, int dcrn, void opaque,
	dcr_read_cb dcr_read, dcr_write_cb dcr_write)
	{
	assert(dev->cpu);
	ppc_dcr_register(&dev->cpu->env, dcrn, opaque, dcr_read, dcr_write);
	}

	bool ppc4xx_dcr_realize(Ppc4xxDcrDeviceState dev, PowerPCCPU cpu,
	Error **errp)
	{
	object_property_set_link(OBJECT(dev), "cpu", OBJECT(cpu), &error_abort);
	return sysbus_realize(SYS_BUS_DEVICE(dev), errp);
	}

	static Property ppc4xx_dcr_properties[] = {
	DEFINE_PROP_LINK("cpu", Ppc4xxDcrDeviceState, cpu, TYPE_POWERPC_CPU,
	PowerPCCPU *),
	DEFINE_PROP_END_OF_LIST(),
	};

	static void ppc4xx_dcr_class_init(ObjectClass oc, void data)
	{
	DeviceClass *dc = DEVICE_CLASS(oc);

	device_class_set_props(dc, ppc4xx_dcr_properties);
	}

	static const TypeInfo ppc4xx_types[] = {
	{
	.name = TYPE_PPC4xx_MAL,
	.parent = TYPE_PPC4xx_DCR_DEVICE,
	.instance_size = sizeof(Ppc4xxMalState),
	.instance_finalize = ppc4xx_mal_finalize,
	.class_init = ppc4xx_mal_class_init,
	}, {
	.name = TYPE_PPC4xx_PLB,
	.parent = TYPE_PPC4xx_DCR_DEVICE,
	.instance_size = sizeof(Ppc4xxPlbState),
	.class_init = ppc405_plb_class_init,
	}, {
	.name = TYPE_PPC4xx_EBC,
	.parent = TYPE_PPC4xx_DCR_DEVICE,
	.instance_size = sizeof(Ppc4xxEbcState),
	.class_init = ppc405_ebc_class_init,
	}, {
	.name = TYPE_PPC4xx_DCR_DEVICE,
	.parent = TYPE_SYS_BUS_DEVICE,
	.instance_size = sizeof(Ppc4xxDcrDeviceState),
	.class_init = ppc4xx_dcr_class_init,
	.abstract = true,
	}
	};

	DEFINE_TYPES(ppc4xx_types)