mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

hw/sd/aspeed_sdhci: New device

Browse Source 
The Aspeed SOCs have two SD/MMC controllers. Add a device that
encapsulates both of these controllers and models the Aspeed-specific
registers and behavior.

Tested by reading from mmcblk0 in Linux:
qemu-system-arm -machine romulus-bmc -nographic \
 -drive file=flash-romulus,format=raw,if=mtd \
 -device sd-card,drive=sd0 -drive file=_tmp/kernel,format=raw,if=sd,id=sd0

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-id: 20190925143248.10000-3-clg@kaod.org
[clg: - changed the controller MMIO window size to 0x1000
      - moved the MMIO mapping of the SDHCI slots at the SoC level
      - merged code to add SD drives on the SD buses at the machine level ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Eddie James 2019-09-25 16:32:27 +02:00 committed by Peter Maydell
parent 1ff68783f6
commit 2bea128c3d
6 changed files with 273 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
hw/arm/aspeed.c
View File

@ -170,6 +170,7 @@ static void aspeed_board_init(MachineState *machine,
AspeedSoCClass *sc;
DriveInfo *drive0 = drive_get(IF_MTD, 0, 0);
ram_addr_t max_ram_size;
int i;
bmc = g_new0(AspeedBoardState, 1);
@ -252,6 +253,19 @@ static void aspeed_board_init(MachineState *machine,
cfg->i2c_init(bmc);
}
for (i = 0; i < ARRAY_SIZE(bmc->soc.sdhci.slots); i++) {
SDHCIState *sdhci = &bmc->soc.sdhci.slots[i];
DriveInfo *dinfo = drive_get_next(IF_SD);
BlockBackend *blk;
DeviceState *card;
blk = dinfo ? blk_by_legacy_dinfo(dinfo) : NULL;
card = qdev_create(qdev_get_child_bus(DEVICE(sdhci), "sd-bus"),
TYPE_SD_CARD);
qdev_prop_set_drive(card, "drive", blk, &error_fatal);
object_property_set_bool(OBJECT(card), true, "realized", &error_fatal);
}
arm_load_kernel(ARM_CPU(first_cpu), machine, &aspeed_board_binfo);
}
@ -373,7 +387,6 @@ static void aspeed_machine_class_init(ObjectClass *oc, void *data)
mc->desc = board->desc;
mc->init = aspeed_machine_init;
mc->max_cpus = ASPEED_CPUS_NUM;
mc->no_sdcard = 1;
mc->no_floppy = 1;
mc->no_cdrom = 1;
mc->no_parallel = 1;

23
hw/arm/aspeed_soc.c
View File

@ -36,6 +36,7 @@ static const hwaddr aspeed_soc_ast2400_memmap[] = {
[ASPEED_XDMA] = 0x1E6E7000,
[ASPEED_ADC] = 0x1E6E9000,
[ASPEED_SRAM] = 0x1E720000,
[ASPEED_SDHCI] = 0x1E740000,
[ASPEED_GPIO] = 0x1E780000,
[ASPEED_RTC] = 0x1E781000,
[ASPEED_TIMER1] = 0x1E782000,
@ -63,6 +64,7 @@ static const hwaddr aspeed_soc_ast2500_memmap[] = {
[ASPEED_XDMA] = 0x1E6E7000,
[ASPEED_ADC] = 0x1E6E9000,
[ASPEED_SRAM] = 0x1E720000,
[ASPEED_SDHCI] = 0x1E740000,
[ASPEED_GPIO] = 0x1E780000,
[ASPEED_RTC] = 0x1E781000,
[ASPEED_TIMER1] = 0x1E782000,
@ -108,6 +110,7 @@ static const int aspeed_soc_ast2400_irqmap[] = {
[ASPEED_ETH1] = 2,
[ASPEED_ETH2] = 3,
[ASPEED_XDMA] = 6,
[ASPEED_SDHCI] = 26,
};
#define aspeed_soc_ast2500_irqmap aspeed_soc_ast2400_irqmap
@ -230,6 +233,15 @@ static void aspeed_soc_init(Object *obj)
snprintf(typename, sizeof(typename), "aspeed.gpio-%s", socname);
sysbus_init_child_obj(obj, "gpio", OBJECT(&s->gpio), sizeof(s->gpio),
typename);
sysbus_init_child_obj(obj, "sdc", OBJECT(&s->sdhci), sizeof(s->sdhci),
TYPE_ASPEED_SDHCI);
/* Init sd card slot class here so that they're under the correct parent */
for (i = 0; i < ASPEED_SDHCI_NUM_SLOTS; ++i) {
sysbus_init_child_obj(obj, "sdhci[*]", OBJECT(&s->sdhci.slots[i]),
sizeof(s->sdhci.slots[i]), TYPE_SYSBUS_SDHCI);
}
}
static void aspeed_soc_realize(DeviceState *dev, Error **errp)
@ -419,6 +431,17 @@ static void aspeed_soc_realize(DeviceState *dev, Error **errp)
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpio), 0, sc->info->memmap[ASPEED_GPIO]);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpio), 0,
aspeed_soc_get_irq(s, ASPEED_GPIO));
/* SDHCI */
object_property_set_bool(OBJECT(&s->sdhci), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->sdhci), 0,
sc->info->memmap[ASPEED_SDHCI]);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0,
aspeed_soc_get_irq(s, ASPEED_SDHCI));
}
static Property aspeed_soc_properties[] = {
DEFINE_PROP_UINT32("num-cpus", AspeedSoCState, num_cpus, 0),

1
hw/sd/Makefile.objs
View File

@ -8,3 +8,4 @@ obj-$(CONFIG_MILKYMIST) += milkymist-memcard.o
obj-$(CONFIG_OMAP) += omap_mmc.o
obj-$(CONFIG_PXA2XX) += pxa2xx_mmci.o
obj-$(CONFIG_RASPI) += bcm2835_sdhost.o
obj-$(CONFIG_ASPEED_SOC) += aspeed_sdhci.o

198
hw/sd/aspeed_sdhci.c Normal file
View File

@ -0,0 +1,198 @@
/*
* Aspeed SD Host Controller
* Eddie James <eajames@linux.ibm.com>
*
* Copyright (C) 2019 IBM Corp
* SPDX-License-Identifer: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "qemu/log.h"
#include "qemu/error-report.h"
#include "hw/sd/aspeed_sdhci.h"
#include "qapi/error.h"
#include "hw/irq.h"
#include "migration/vmstate.h"
#define ASPEED_SDHCI_INFO 0x00
#define ASPEED_SDHCI_INFO_RESET 0x00030000
#define ASPEED_SDHCI_DEBOUNCE 0x04
#define ASPEED_SDHCI_DEBOUNCE_RESET 0x00000005
#define ASPEED_SDHCI_BUS 0x08
#define ASPEED_SDHCI_SDIO_140 0x10
#define ASPEED_SDHCI_SDIO_148 0x18
#define ASPEED_SDHCI_SDIO_240 0x20
#define ASPEED_SDHCI_SDIO_248 0x28
#define ASPEED_SDHCI_WP_POL 0xec
#define ASPEED_SDHCI_CARD_DET 0xf0
#define ASPEED_SDHCI_IRQ_STAT 0xfc
#define TO_REG(addr) ((addr) / sizeof(uint32_t))
static uint64_t aspeed_sdhci_read(void *opaque, hwaddr addr, unsigned int size)
{
uint32_t val = 0;
AspeedSDHCIState *sdhci = opaque;
switch (addr) {
case ASPEED_SDHCI_SDIO_140:
val = (uint32_t)sdhci->slots[0].capareg;
break;
case ASPEED_SDHCI_SDIO_148:
val = (uint32_t)sdhci->slots[0].maxcurr;
break;
case ASPEED_SDHCI_SDIO_240:
val = (uint32_t)sdhci->slots[1].capareg;
break;
case ASPEED_SDHCI_SDIO_248:
val = (uint32_t)sdhci->slots[1].maxcurr;
break;
default:
if (addr < ASPEED_SDHCI_REG_SIZE) {
val = sdhci->regs[TO_REG(addr)];
} else {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: Out-of-bounds read at 0x%" HWADDR_PRIx "\n",
__func__, addr);
}
}
return (uint64_t)val;
}
static void aspeed_sdhci_write(void *opaque, hwaddr addr, uint64_t val,
unsigned int size)
{
AspeedSDHCIState *sdhci = opaque;
switch (addr) {
case ASPEED_SDHCI_SDIO_140:
sdhci->slots[0].capareg = (uint64_t)(uint32_t)val;
break;
case ASPEED_SDHCI_SDIO_148:
sdhci->slots[0].maxcurr = (uint64_t)(uint32_t)val;
break;
case ASPEED_SDHCI_SDIO_240:
sdhci->slots[1].capareg = (uint64_t)(uint32_t)val;
break;
case ASPEED_SDHCI_SDIO_248:
sdhci->slots[1].maxcurr = (uint64_t)(uint32_t)val;
break;
default:
if (addr < ASPEED_SDHCI_REG_SIZE) {
sdhci->regs[TO_REG(addr)] = (uint32_t)val;
} else {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: Out-of-bounds write at 0x%" HWADDR_PRIx "\n",
__func__, addr);
}
}
}
static const MemoryRegionOps aspeed_sdhci_ops = {
.read = aspeed_sdhci_read,
.write = aspeed_sdhci_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.valid.min_access_size = 4,
.valid.max_access_size = 4,
};
static void aspeed_sdhci_set_irq(void *opaque, int n, int level)
{
AspeedSDHCIState *sdhci = opaque;
if (level) {
sdhci->regs[TO_REG(ASPEED_SDHCI_IRQ_STAT)] |= BIT(n);
qemu_irq_raise(sdhci->irq);
} else {
sdhci->regs[TO_REG(ASPEED_SDHCI_IRQ_STAT)] &= ~BIT(n);
qemu_irq_lower(sdhci->irq);
}
}
static void aspeed_sdhci_realize(DeviceState *dev, Error **errp)
{
Error *err = NULL;
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
AspeedSDHCIState *sdhci = ASPEED_SDHCI(dev);
/* Create input irqs for the slots */
qdev_init_gpio_in_named_with_opaque(DEVICE(sbd), aspeed_sdhci_set_irq,
sdhci, NULL, ASPEED_SDHCI_NUM_SLOTS);
sysbus_init_irq(sbd, &sdhci->irq);
memory_region_init_io(&sdhci->iomem, OBJECT(sdhci), &aspeed_sdhci_ops,
sdhci, TYPE_ASPEED_SDHCI, 0x1000);
sysbus_init_mmio(sbd, &sdhci->iomem);
for (int i = 0; i < ASPEED_SDHCI_NUM_SLOTS; ++i) {
Object *sdhci_slot = OBJECT(&sdhci->slots[i]);
SysBusDevice *sbd_slot = SYS_BUS_DEVICE(&sdhci->slots[i]);
object_property_set_int(sdhci_slot, 2, "sd-spec-version", &err);
if (err) {
error_propagate(errp, err);
return;
}
object_property_set_uint(sdhci_slot, ASPEED_SDHCI_CAPABILITIES,
"capareg", &err);
if (err) {
error_propagate(errp, err);
return;
}
object_property_set_bool(sdhci_slot, true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
sysbus_connect_irq(sbd_slot, 0, qdev_get_gpio_in(DEVICE(sbd), i));
memory_region_add_subregion(&sdhci->iomem, (i + 1) * 0x100,
&sdhci->slots[i].iomem);
}
}
static void aspeed_sdhci_reset(DeviceState *dev)
{
AspeedSDHCIState *sdhci = ASPEED_SDHCI(dev);
memset(sdhci->regs, 0, ASPEED_SDHCI_REG_SIZE);
sdhci->regs[TO_REG(ASPEED_SDHCI_INFO)] = ASPEED_SDHCI_INFO_RESET;
sdhci->regs[TO_REG(ASPEED_SDHCI_DEBOUNCE)] = ASPEED_SDHCI_DEBOUNCE_RESET;
}
static const VMStateDescription vmstate_aspeed_sdhci = {
.name = TYPE_ASPEED_SDHCI,
.version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32_ARRAY(regs, AspeedSDHCIState, ASPEED_SDHCI_NUM_REGS),
VMSTATE_END_OF_LIST(),
},
};
static void aspeed_sdhci_class_init(ObjectClass *classp, void *data)
{
DeviceClass *dc = DEVICE_CLASS(classp);
dc->realize = aspeed_sdhci_realize;
dc->reset = aspeed_sdhci_reset;
dc->vmsd = &vmstate_aspeed_sdhci;
}
static TypeInfo aspeed_sdhci_info = {
.name = TYPE_ASPEED_SDHCI,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(AspeedSDHCIState),
.class_init = aspeed_sdhci_class_init,
};
static void aspeed_sdhci_register_types(void)
{
type_register_static(&aspeed_sdhci_info);
}
type_init(aspeed_sdhci_register_types)

3
include/hw/arm/aspeed_soc.h
View File

@ -24,6 +24,7 @@
#include "hw/net/ftgmac100.h"
#include "target/arm/cpu.h"
#include "hw/gpio/aspeed_gpio.h"
#include "hw/sd/aspeed_sdhci.h"
#define ASPEED_SPIS_NUM 2
#define ASPEED_WDTS_NUM 3
@ -50,6 +51,7 @@ typedef struct AspeedSoCState {
AspeedWDTState wdt[ASPEED_WDTS_NUM];
FTGMAC100State ftgmac100[ASPEED_MACS_NUM];
AspeedGPIOState gpio;
AspeedSDHCIState sdhci;
} AspeedSoCState;
#define TYPE_ASPEED_SOC "aspeed-soc"
@ -93,6 +95,7 @@ enum {
ASPEED_SCU,
ASPEED_ADC,
ASPEED_SRAM,
ASPEED_SDHCI,
ASPEED_GPIO,
ASPEED_RTC,
ASPEED_TIMER1,

34
include/hw/sd/aspeed_sdhci.h Normal file
View File

@ -0,0 +1,34 @@
/*
* Aspeed SD Host Controller
* Eddie James <eajames@linux.ibm.com>
*
* Copyright (C) 2019 IBM Corp
* SPDX-License-Identifer: GPL-2.0-or-later
*/
#ifndef ASPEED_SDHCI_H
#define ASPEED_SDHCI_H
#include "hw/sd/sdhci.h"
#define TYPE_ASPEED_SDHCI "aspeed.sdhci"
#define ASPEED_SDHCI(obj) OBJECT_CHECK(AspeedSDHCIState, (obj), \
TYPE_ASPEED_SDHCI)
#define ASPEED_SDHCI_CAPABILITIES 0x01E80080
#define ASPEED_SDHCI_NUM_SLOTS 2
#define ASPEED_SDHCI_NUM_REGS (ASPEED_SDHCI_REG_SIZE / sizeof(uint32_t))
#define ASPEED_SDHCI_REG_SIZE 0x100
typedef struct AspeedSDHCIState {
SysBusDevice parent;
SDHCIState slots[ASPEED_SDHCI_NUM_SLOTS];
MemoryRegion iomem;
qemu_irq irq;
uint32_t regs[ASPEED_SDHCI_NUM_REGS];
} AspeedSDHCIState;
#endif /* ASPEED_SDHCI_H */