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qemu/hw/ppc/ppc4xx_devs.c
BALATON Zoltan a55b213646 hw/intc/ppc-uic: Convert ppc-uic to a PPC4xx DCR device 
Make ppc-uic a subclass of ppc4xx-dcr-device which will handle the cpu
link and make it uniform with the other PPC4xx devices.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <eb548130cf60aea8a6ea4dba4dee1686b3cabc3d.1660746880.git.balaton@eik.bme.hu>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
2022-08-31 14:08:06 -03:00

991 lines
28 KiB
C
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/*
* 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 "qemu/units.h"
#include "sysemu/reset.h"
#include "cpu.h"
#include "hw/irq.h"
#include "hw/ppc/ppc.h"
#include "hw/ppc/ppc4xx.h"
#include "hw/qdev-properties.h"
#include "qemu/log.h"
#include "exec/address-spaces.h"
#include "qemu/error-report.h"
#include "qapi/error.h"
#include "trace.h"
/*****************************************************************************/
/* SDRAM controller */
typedef struct ppc4xx_sdram_t ppc4xx_sdram_t;
struct ppc4xx_sdram_t {
uint32_t addr;
int nbanks;
MemoryRegion containers[4]; /* used for clipping */
MemoryRegion *ram_memories;
hwaddr ram_bases[4];
hwaddr ram_sizes[4];
uint32_t besr0;
uint32_t besr1;
uint32_t bear;
uint32_t cfg;
uint32_t status;
uint32_t rtr;
uint32_t pmit;
uint32_t bcr[4];
uint32_t tr;
uint32_t ecccfg;
uint32_t eccesr;
qemu_irq irq;
};
enum {
SDRAM0_CFGADDR = 0x010,
SDRAM0_CFGDATA = 0x011,
};
/* XXX: TOFIX: some patches have made this code become inconsistent:
* there are type inconsistencies, mixing hwaddr, target_ulong
* and uint32_t
*/
static uint32_t sdram_bcr (hwaddr ram_base,
hwaddr ram_size)
{
uint32_t bcr;
switch (ram_size) {
case 4 * MiB:
bcr = 0x00000000;
break;
case 8 * MiB:
bcr = 0x00020000;
break;
case 16 * MiB:
bcr = 0x00040000;
break;
case 32 * MiB:
bcr = 0x00060000;
break;
case 64 * MiB:
bcr = 0x00080000;
break;
case 128 * MiB:
bcr = 0x000A0000;
break;
case 256 * MiB:
bcr = 0x000C0000;
break;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"%s: invalid RAM size 0x%" HWADDR_PRIx "\n", __func__,
ram_size);
return 0x00000000;
}
bcr |= ram_base & 0xFF800000;
bcr |= 1;
return bcr;
}
static inline hwaddr sdram_base(uint32_t bcr)
{
return bcr & 0xFF800000;
}
static target_ulong sdram_size (uint32_t bcr)
{
target_ulong size;
int sh;
sh = (bcr >> 17) & 0x7;
if (sh == 7)
size = -1;
else
size = (4 * MiB) << sh;
return size;
}
static void sdram_set_bcr(ppc4xx_sdram_t *sdram, int i,
uint32_t bcr, int enabled)
{
if (sdram->bcr[i] & 0x00000001) {
/* Unmap RAM */
trace_ppc4xx_sdram_unmap(sdram_base(sdram->bcr[i]),
sdram_size(sdram->bcr[i]));
memory_region_del_subregion(get_system_memory(),
&sdram->containers[i]);
memory_region_del_subregion(&sdram->containers[i],
&sdram->ram_memories[i]);
object_unparent(OBJECT(&sdram->containers[i]));
}
sdram->bcr[i] = bcr & 0xFFDEE001;
if (enabled && (bcr & 0x00000001)) {
trace_ppc4xx_sdram_unmap(sdram_base(bcr), sdram_size(bcr));
memory_region_init(&sdram->containers[i], NULL, "sdram-containers",
sdram_size(bcr));
memory_region_add_subregion(&sdram->containers[i], 0,
&sdram->ram_memories[i]);
memory_region_add_subregion(get_system_memory(),
sdram_base(bcr),
&sdram->containers[i]);
}
}
static void sdram_map_bcr (ppc4xx_sdram_t *sdram)
{
int i;
for (i = 0; i < sdram->nbanks; i++) {
if (sdram->ram_sizes[i] != 0) {
sdram_set_bcr(sdram, i, sdram_bcr(sdram->ram_bases[i],
sdram->ram_sizes[i]), 1);
} else {
sdram_set_bcr(sdram, i, 0x00000000, 0);
}
}
}
static void sdram_unmap_bcr (ppc4xx_sdram_t *sdram)
{
int i;
for (i = 0; i < sdram->nbanks; i++) {
trace_ppc4xx_sdram_unmap(sdram_base(sdram->bcr[i]),
sdram_size(sdram->bcr[i]));
memory_region_del_subregion(get_system_memory(),
&sdram->ram_memories[i]);
}
}
static uint32_t dcr_read_sdram (void *opaque, int dcrn)
{
ppc4xx_sdram_t *sdram;
uint32_t ret;
sdram = opaque;
switch (dcrn) {
case SDRAM0_CFGADDR:
ret = sdram->addr;
break;
case SDRAM0_CFGDATA:
switch (sdram->addr) {
case 0x00: /* SDRAM_BESR0 */
ret = sdram->besr0;
break;
case 0x08: /* SDRAM_BESR1 */
ret = sdram->besr1;
break;
case 0x10: /* SDRAM_BEAR */
ret = sdram->bear;
break;
case 0x20: /* SDRAM_CFG */
ret = sdram->cfg;
break;
case 0x24: /* SDRAM_STATUS */
ret = sdram->status;
break;
case 0x30: /* SDRAM_RTR */
ret = sdram->rtr;
break;
case 0x34: /* SDRAM_PMIT */
ret = sdram->pmit;
break;
case 0x40: /* SDRAM_B0CR */
ret = sdram->bcr[0];
break;
case 0x44: /* SDRAM_B1CR */
ret = sdram->bcr[1];
break;
case 0x48: /* SDRAM_B2CR */
ret = sdram->bcr[2];
break;
case 0x4C: /* SDRAM_B3CR */
ret = sdram->bcr[3];
break;
case 0x80: /* SDRAM_TR */
ret = -1; /* ? */
break;
case 0x94: /* SDRAM_ECCCFG */
ret = sdram->ecccfg;
break;
case 0x98: /* SDRAM_ECCESR */
ret = sdram->eccesr;
break;
default: /* Error */
ret = -1;
break;
}
break;
default:
/* Avoid gcc warning */
ret = 0x00000000;
break;
}
return ret;
}
static void dcr_write_sdram (void *opaque, int dcrn, uint32_t val)
{
ppc4xx_sdram_t *sdram;
sdram = opaque;
switch (dcrn) {
case SDRAM0_CFGADDR:
sdram->addr = val;
break;
case SDRAM0_CFGDATA:
switch (sdram->addr) {
case 0x00: /* SDRAM_BESR0 */
sdram->besr0 &= ~val;
break;
case 0x08: /* SDRAM_BESR1 */
sdram->besr1 &= ~val;
break;
case 0x10: /* SDRAM_BEAR */
sdram->bear = val;
break;
case 0x20: /* SDRAM_CFG */
val &= 0xFFE00000;
if (!(sdram->cfg & 0x80000000) && (val & 0x80000000)) {
trace_ppc4xx_sdram_enable("enable");
/* validate all RAM mappings */
sdram_map_bcr(sdram);
sdram->status &= ~0x80000000;
} else if ((sdram->cfg & 0x80000000) && !(val & 0x80000000)) {
trace_ppc4xx_sdram_enable("disable");
/* invalidate all RAM mappings */
sdram_unmap_bcr(sdram);
sdram->status |= 0x80000000;
}
if (!(sdram->cfg & 0x40000000) && (val & 0x40000000))
sdram->status |= 0x40000000;
else if ((sdram->cfg & 0x40000000) && !(val & 0x40000000))
sdram->status &= ~0x40000000;
sdram->cfg = val;
break;
case 0x24: /* SDRAM_STATUS */
/* Read-only register */
break;
case 0x30: /* SDRAM_RTR */
sdram->rtr = val & 0x3FF80000;
break;
case 0x34: /* SDRAM_PMIT */
sdram->pmit = (val & 0xF8000000) | 0x07C00000;
break;
case 0x40: /* SDRAM_B0CR */
sdram_set_bcr(sdram, 0, val, sdram->cfg & 0x80000000);
break;
case 0x44: /* SDRAM_B1CR */
sdram_set_bcr(sdram, 1, val, sdram->cfg & 0x80000000);
break;
case 0x48: /* SDRAM_B2CR */
sdram_set_bcr(sdram, 2, val, sdram->cfg & 0x80000000);
break;
case 0x4C: /* SDRAM_B3CR */
sdram_set_bcr(sdram, 3, val, sdram->cfg & 0x80000000);
break;
case 0x80: /* SDRAM_TR */
sdram->tr = val & 0x018FC01F;
break;
case 0x94: /* SDRAM_ECCCFG */
sdram->ecccfg = val & 0x00F00000;
break;
case 0x98: /* SDRAM_ECCESR */
val &= 0xFFF0F000;
if (sdram->eccesr == 0 && val != 0)
qemu_irq_raise(sdram->irq);
else if (sdram->eccesr != 0 && val == 0)
qemu_irq_lower(sdram->irq);
sdram->eccesr = val;
break;
default: /* Error */
break;
}
break;
}
}
static void sdram_reset (void *opaque)
{
ppc4xx_sdram_t *sdram;
sdram = opaque;
sdram->addr = 0x00000000;
sdram->bear = 0x00000000;
sdram->besr0 = 0x00000000; /* No error */
sdram->besr1 = 0x00000000; /* No error */
sdram->cfg = 0x00000000;
sdram->ecccfg = 0x00000000; /* No ECC */
sdram->eccesr = 0x00000000; /* No error */
sdram->pmit = 0x07C00000;
sdram->rtr = 0x05F00000;
sdram->tr = 0x00854009;
/* We pre-initialize RAM banks */
sdram->status = 0x00000000;
sdram->cfg = 0x00800000;
}
void ppc4xx_sdram_init (CPUPPCState *env, qemu_irq irq, int nbanks,
MemoryRegion *ram_memories,
hwaddr *ram_bases,
hwaddr *ram_sizes,
int do_init)
{
ppc4xx_sdram_t *sdram;
sdram = g_new0(ppc4xx_sdram_t, 1);
sdram->irq = irq;
sdram->nbanks = nbanks;
sdram->ram_memories = ram_memories;
memset(sdram->ram_bases, 0, 4 * sizeof(hwaddr));
memcpy(sdram->ram_bases, ram_bases,
nbanks * sizeof(hwaddr));
memset(sdram->ram_sizes, 0, 4 * sizeof(hwaddr));
memcpy(sdram->ram_sizes, ram_sizes,
nbanks * sizeof(hwaddr));
qemu_register_reset(&sdram_reset, sdram);
ppc_dcr_register(env, SDRAM0_CFGADDR,
sdram, &dcr_read_sdram, &dcr_write_sdram);
ppc_dcr_register(env, SDRAM0_CFGDATA,
sdram, &dcr_read_sdram, &dcr_write_sdram);
if (do_init)
sdram_map_bcr(sdram);
}
/*
* Split RAM between SDRAM banks.
*
* sdram_bank_sizes[] must be in descending order, that is sizes[i] > sizes[i+1]
* and must be 0-terminated.
*
* The 4xx SDRAM controller supports a small number of banks, and each bank
* must be one of a small set of sizes. The number of banks and the supported
* sizes varies by SoC.
*/
void ppc4xx_sdram_banks(MemoryRegion *ram, int nr_banks,
MemoryRegion ram_memories[],
hwaddr ram_bases[], hwaddr ram_sizes[],
const ram_addr_t sdram_bank_sizes[])
{
ram_addr_t size_left = memory_region_size(ram);
ram_addr_t base = 0;
ram_addr_t bank_size;
int i;
int j;
for (i = 0; i < nr_banks; i++) {
for (j = 0; sdram_bank_sizes[j] != 0; j++) {
bank_size = sdram_bank_sizes[j];
if (bank_size <= size_left) {
char name[32];
ram_bases[i] = base;
ram_sizes[i] = bank_size;
base += bank_size;
size_left -= bank_size;
snprintf(name, sizeof(name), "ppc4xx.sdram%d", i);
memory_region_init_alias(&ram_memories[i], NULL, name, ram,
ram_bases[i], ram_sizes[i]);
break;
}
}
if (!size_left) {
/* No need to use the remaining banks. */
break;
}
}
if (size_left) {
ram_addr_t used_size = memory_region_size(ram) - size_left;
GString *s = g_string_new(NULL);
for (i = 0; sdram_bank_sizes[i]; i++) {
g_string_append_printf(s, "%" PRIi64 "%s",
sdram_bank_sizes[i] / MiB,
sdram_bank_sizes[i + 1] ? ", " : "");
}
error_report("at most %d bank%s of %s MiB each supported",
nr_banks, nr_banks == 1 ? "" : "s", s->str);
error_printf("Possible valid RAM size: %" PRIi64 " MiB \n",
used_size ? used_size / MiB : sdram_bank_sizes[i - 1] / MiB);
g_string_free(s, true);
exit(EXIT_FAILURE);
}
}
/*****************************************************************************/
/* 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;
dc->reset = 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;
dc->reset = 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;
dc->reset = 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)
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