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qemu/hw/arm/versatilepb.c
Markus Armbruster d83c29e981 hw/arm/versatilepb hw/arm/vexpress: Replace drive_get_next() by drive_get() 
drive_get_next() is basically a bad idea.  It returns the "next" block
backend of a certain interface type.  "Next" means bus=0,unit=N, where
subsequent calls count N up from zero, per interface type.

This lets you define unit numbers implicitly by execution order.  If the
order changes, or new calls appear "in the middle", unit numbers change.
ABI break.  Hard to spot in review.

The versatile and vexpress machines ("versatileab", "versatilepb",
"vexpress-a9", "vexpress-a15") connect just one or two backends of a
type with drive_get_next().  Change them to use drive_get() directly.
This makes the unit numbers explicit in the code.

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-arm@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20211117163409.3587705-5-armbru@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
2021-12-15 08:38:16 +01:00

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/*
* ARM Versatile Platform/Application Baseboard System emulation.
*
* Copyright (c) 2005-2007 CodeSourcery.
* Written by Paul Brook
*
* This code is licensed under the GPL.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "cpu.h"
#include "hw/sysbus.h"
#include "migration/vmstate.h"
#include "hw/arm/boot.h"
#include "hw/net/smc91c111.h"
#include "net/net.h"
#include "sysemu/sysemu.h"
#include "hw/pci/pci.h"
#include "hw/i2c/i2c.h"
#include "hw/i2c/arm_sbcon_i2c.h"
#include "hw/irq.h"
#include "hw/boards.h"
#include "hw/block/flash.h"
#include "qemu/error-report.h"
#include "hw/char/pl011.h"
#include "hw/sd/sd.h"
#include "qom/object.h"
#define VERSATILE_FLASH_ADDR 0x34000000
#define VERSATILE_FLASH_SIZE (64 * 1024 * 1024)
#define VERSATILE_FLASH_SECT_SIZE (256 * 1024)
/* Primary interrupt controller. */
#define TYPE_VERSATILE_PB_SIC "versatilepb_sic"
OBJECT_DECLARE_SIMPLE_TYPE(vpb_sic_state, VERSATILE_PB_SIC)
struct vpb_sic_state {
SysBusDevice parent_obj;
MemoryRegion iomem;
uint32_t level;
uint32_t mask;
uint32_t pic_enable;
qemu_irq parent[32];
int irq;
};
static const VMStateDescription vmstate_vpb_sic = {
.name = "versatilepb_sic",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(level, vpb_sic_state),
VMSTATE_UINT32(mask, vpb_sic_state),
VMSTATE_UINT32(pic_enable, vpb_sic_state),
VMSTATE_END_OF_LIST()
}
};
static void vpb_sic_update(vpb_sic_state *s)
{
uint32_t flags;
flags = s->level & s->mask;
qemu_set_irq(s->parent[s->irq], flags != 0);
}
static void vpb_sic_update_pic(vpb_sic_state *s)
{
int i;
uint32_t mask;
for (i = 21; i <= 30; i++) {
mask = 1u << i;
if (!(s->pic_enable & mask))
continue;
qemu_set_irq(s->parent[i], (s->level & mask) != 0);
}
}
static void vpb_sic_set_irq(void *opaque, int irq, int level)
{
vpb_sic_state *s = (vpb_sic_state *)opaque;
if (level)
s->level |= 1u << irq;
else
s->level &= ~(1u << irq);
if (s->pic_enable & (1u << irq))
qemu_set_irq(s->parent[irq], level);
vpb_sic_update(s);
}
static uint64_t vpb_sic_read(void *opaque, hwaddr offset,
unsigned size)
{
vpb_sic_state *s = (vpb_sic_state *)opaque;
switch (offset >> 2) {
case 0: /* STATUS */
return s->level & s->mask;
case 1: /* RAWSTAT */
return s->level;
case 2: /* ENABLE */
return s->mask;
case 4: /* SOFTINT */
return s->level & 1;
case 8: /* PICENABLE */
return s->pic_enable;
default:
printf ("vpb_sic_read: Bad register offset 0x%x\n", (int)offset);
return 0;
}
}
static void vpb_sic_write(void *opaque, hwaddr offset,
uint64_t value, unsigned size)
{
vpb_sic_state *s = (vpb_sic_state *)opaque;
switch (offset >> 2) {
case 2: /* ENSET */
s->mask |= value;
break;
case 3: /* ENCLR */
s->mask &= ~value;
break;
case 4: /* SOFTINTSET */
if (value)
s->mask |= 1;
break;
case 5: /* SOFTINTCLR */
if (value)
s->mask &= ~1u;
break;
case 8: /* PICENSET */
s->pic_enable |= (value & 0x7fe00000);
vpb_sic_update_pic(s);
break;
case 9: /* PICENCLR */
s->pic_enable &= ~value;
vpb_sic_update_pic(s);
break;
default:
printf ("vpb_sic_write: Bad register offset 0x%x\n", (int)offset);
return;
}
vpb_sic_update(s);
}
static const MemoryRegionOps vpb_sic_ops = {
.read = vpb_sic_read,
.write = vpb_sic_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
static void vpb_sic_init(Object *obj)
{
DeviceState *dev = DEVICE(obj);
vpb_sic_state *s = VERSATILE_PB_SIC(obj);
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
int i;
qdev_init_gpio_in(dev, vpb_sic_set_irq, 32);
for (i = 0; i < 32; i++) {
sysbus_init_irq(sbd, &s->parent[i]);
}
s->irq = 31;
memory_region_init_io(&s->iomem, obj, &vpb_sic_ops, s,
"vpb-sic", 0x1000);
sysbus_init_mmio(sbd, &s->iomem);
}
/* Board init. */
/* The AB and PB boards both use the same core, just with different
peripherals and expansion busses. For now we emulate a subset of the
PB peripherals and just change the board ID. */
static struct arm_boot_info versatile_binfo;
static void versatile_init(MachineState *machine, int board_id)
{
Object *cpuobj;
ARMCPU *cpu;
MemoryRegion *sysmem = get_system_memory();
qemu_irq pic[32];
qemu_irq sic[32];
DeviceState *dev, *sysctl;
SysBusDevice *busdev;
DeviceState *pl041;
PCIBus *pci_bus;
NICInfo *nd;
I2CBus *i2c;
int n;
int done_smc = 0;
DriveInfo *dinfo;
if (machine->ram_size > 0x10000000) {
/* Device starting at address 0x10000000,
* and memory cannot overlap with devices.
* Refuse to run rather than behaving very confusingly.
*/
error_report("versatilepb: memory size must not exceed 256MB");
exit(1);
}
cpuobj = object_new(machine->cpu_type);
/* By default ARM1176 CPUs have EL3 enabled. This board does not
* currently support EL3 so the CPU EL3 property is disabled before
* realization.
*/
if (object_property_find(cpuobj, "has_el3")) {
object_property_set_bool(cpuobj, "has_el3", false, &error_fatal);
}
qdev_realize(DEVICE(cpuobj), NULL, &error_fatal);
cpu = ARM_CPU(cpuobj);
/* ??? RAM should repeat to fill physical memory space. */
/* SDRAM at address zero. */
memory_region_add_subregion(sysmem, 0, machine->ram);
sysctl = qdev_new("realview_sysctl");
qdev_prop_set_uint32(sysctl, "sys_id", 0x41007004);
qdev_prop_set_uint32(sysctl, "proc_id", 0x02000000);
sysbus_realize_and_unref(SYS_BUS_DEVICE(sysctl), &error_fatal);
sysbus_mmio_map(SYS_BUS_DEVICE(sysctl), 0, 0x10000000);
dev = sysbus_create_varargs("pl190", 0x10140000,
qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_IRQ),
qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_FIQ),
NULL);
for (n = 0; n < 32; n++) {
pic[n] = qdev_get_gpio_in(dev, n);
}
dev = sysbus_create_simple(TYPE_VERSATILE_PB_SIC, 0x10003000, NULL);
for (n = 0; n < 32; n++) {
sysbus_connect_irq(SYS_BUS_DEVICE(dev), n, pic[n]);
sic[n] = qdev_get_gpio_in(dev, n);
}
sysbus_create_simple("pl050_keyboard", 0x10006000, sic[3]);
sysbus_create_simple("pl050_mouse", 0x10007000, sic[4]);
dev = qdev_new("versatile_pci");
busdev = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(busdev, &error_fatal);
sysbus_mmio_map(busdev, 0, 0x10001000); /* PCI controller regs */
sysbus_mmio_map(busdev, 1, 0x41000000); /* PCI self-config */
sysbus_mmio_map(busdev, 2, 0x42000000); /* PCI config */
sysbus_mmio_map(busdev, 3, 0x43000000); /* PCI I/O */
sysbus_mmio_map(busdev, 4, 0x44000000); /* PCI memory window 1 */
sysbus_mmio_map(busdev, 5, 0x50000000); /* PCI memory window 2 */
sysbus_mmio_map(busdev, 6, 0x60000000); /* PCI memory window 3 */
sysbus_connect_irq(busdev, 0, sic[27]);
sysbus_connect_irq(busdev, 1, sic[28]);
sysbus_connect_irq(busdev, 2, sic[29]);
sysbus_connect_irq(busdev, 3, sic[30]);
pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci");
for(n = 0; n < nb_nics; n++) {
nd = &nd_table[n];
if (!done_smc && (!nd->model || strcmp(nd->model, "smc91c111") == 0)) {
smc91c111_init(nd, 0x10010000, sic[25]);
done_smc = 1;
} else {
pci_nic_init_nofail(nd, pci_bus, "rtl8139", NULL);
}
}
if (machine_usb(machine)) {
pci_create_simple(pci_bus, -1, "pci-ohci");
}
n = drive_get_max_bus(IF_SCSI);
while (n >= 0) {
dev = DEVICE(pci_create_simple(pci_bus, -1, "lsi53c895a"));
lsi53c8xx_handle_legacy_cmdline(dev);
n--;
}
pl011_create(0x101f1000, pic[12], serial_hd(0));
pl011_create(0x101f2000, pic[13], serial_hd(1));
pl011_create(0x101f3000, pic[14], serial_hd(2));
pl011_create(0x10009000, sic[6], serial_hd(3));
dev = qdev_new("pl080");
object_property_set_link(OBJECT(dev), "downstream", OBJECT(sysmem),
&error_fatal);
busdev = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(busdev, &error_fatal);
sysbus_mmio_map(busdev, 0, 0x10130000);
sysbus_connect_irq(busdev, 0, pic[17]);
sysbus_create_simple("sp804", 0x101e2000, pic[4]);
sysbus_create_simple("sp804", 0x101e3000, pic[5]);
sysbus_create_simple("pl061", 0x101e4000, pic[6]);
sysbus_create_simple("pl061", 0x101e5000, pic[7]);
sysbus_create_simple("pl061", 0x101e6000, pic[8]);
sysbus_create_simple("pl061", 0x101e7000, pic[9]);
/* The versatile/PB actually has a modified Color LCD controller
that includes hardware cursor support from the PL111. */
dev = sysbus_create_simple("pl110_versatile", 0x10120000, pic[16]);
/* Wire up the mux control signals from the SYS_CLCD register */
qdev_connect_gpio_out(sysctl, 0, qdev_get_gpio_in(dev, 0));
dev = sysbus_create_varargs("pl181", 0x10005000, sic[22], sic[1], NULL);
dinfo = drive_get(IF_SD, 0, 0);
if (dinfo) {
DeviceState *card;
card = qdev_new(TYPE_SD_CARD);
qdev_prop_set_drive_err(card, "drive", blk_by_legacy_dinfo(dinfo),
&error_fatal);
qdev_realize_and_unref(card, qdev_get_child_bus(dev, "sd-bus"),
&error_fatal);
}
dev = sysbus_create_varargs("pl181", 0x1000b000, sic[23], sic[2], NULL);
dinfo = drive_get(IF_SD, 0, 1);
if (dinfo) {
DeviceState *card;
card = qdev_new(TYPE_SD_CARD);
qdev_prop_set_drive_err(card, "drive", blk_by_legacy_dinfo(dinfo),
&error_fatal);
qdev_realize_and_unref(card, qdev_get_child_bus(dev, "sd-bus"),
&error_fatal);
}
/* Add PL031 Real Time Clock. */
sysbus_create_simple("pl031", 0x101e8000, pic[10]);
dev = sysbus_create_simple(TYPE_VERSATILE_I2C, 0x10002000, NULL);
i2c = (I2CBus *)qdev_get_child_bus(dev, "i2c");
i2c_slave_create_simple(i2c, "ds1338", 0x68);
/* Add PL041 AACI Interface to the LM4549 codec */
pl041 = qdev_new("pl041");
qdev_prop_set_uint32(pl041, "nc_fifo_depth", 512);
sysbus_realize_and_unref(SYS_BUS_DEVICE(pl041), &error_fatal);
sysbus_mmio_map(SYS_BUS_DEVICE(pl041), 0, 0x10004000);
sysbus_connect_irq(SYS_BUS_DEVICE(pl041), 0, sic[24]);
/* Memory map for Versatile/PB: */
/* 0x10000000 System registers. */
/* 0x10001000 PCI controller config registers. */
/* 0x10002000 Serial bus interface. */
/* 0x10003000 Secondary interrupt controller. */
/* 0x10004000 AACI (audio). */
/* 0x10005000 MMCI0. */
/* 0x10006000 KMI0 (keyboard). */
/* 0x10007000 KMI1 (mouse). */
/* 0x10008000 Character LCD Interface. */
/* 0x10009000 UART3. */
/* 0x1000a000 Smart card 1. */
/* 0x1000b000 MMCI1. */
/* 0x10010000 Ethernet. */
/* 0x10020000 USB. */
/* 0x10100000 SSMC. */
/* 0x10110000 MPMC. */
/* 0x10120000 CLCD Controller. */
/* 0x10130000 DMA Controller. */
/* 0x10140000 Vectored interrupt controller. */
/* 0x101d0000 AHB Monitor Interface. */
/* 0x101e0000 System Controller. */
/* 0x101e1000 Watchdog Interface. */
/* 0x101e2000 Timer 0/1. */
/* 0x101e3000 Timer 2/3. */
/* 0x101e4000 GPIO port 0. */
/* 0x101e5000 GPIO port 1. */
/* 0x101e6000 GPIO port 2. */
/* 0x101e7000 GPIO port 3. */
/* 0x101e8000 RTC. */
/* 0x101f0000 Smart card 0. */
/* 0x101f1000 UART0. */
/* 0x101f2000 UART1. */
/* 0x101f3000 UART2. */
/* 0x101f4000 SSPI. */
/* 0x34000000 NOR Flash */
dinfo = drive_get(IF_PFLASH, 0, 0);
if (!pflash_cfi01_register(VERSATILE_FLASH_ADDR, "versatile.flash",
VERSATILE_FLASH_SIZE,
dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
VERSATILE_FLASH_SECT_SIZE,
4, 0x0089, 0x0018, 0x0000, 0x0, 0)) {
fprintf(stderr, "qemu: Error registering flash memory.\n");
}
versatile_binfo.ram_size = machine->ram_size;
versatile_binfo.board_id = board_id;
arm_load_kernel(cpu, machine, &versatile_binfo);
}
static void vpb_init(MachineState *machine)
{
versatile_init(machine, 0x183);
}
static void vab_init(MachineState *machine)
{
versatile_init(machine, 0x25e);
}
static void versatilepb_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "ARM Versatile/PB (ARM926EJ-S)";
mc->init = vpb_init;
mc->block_default_type = IF_SCSI;
mc->ignore_memory_transaction_failures = true;
mc->default_cpu_type = ARM_CPU_TYPE_NAME("arm926");
mc->default_ram_id = "versatile.ram";
}
static const TypeInfo versatilepb_type = {
.name = MACHINE_TYPE_NAME("versatilepb"),
.parent = TYPE_MACHINE,
.class_init = versatilepb_class_init,
};
static void versatileab_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "ARM Versatile/AB (ARM926EJ-S)";
mc->init = vab_init;
mc->block_default_type = IF_SCSI;
mc->ignore_memory_transaction_failures = true;
mc->default_cpu_type = ARM_CPU_TYPE_NAME("arm926");
mc->default_ram_id = "versatile.ram";
}
static const TypeInfo versatileab_type = {
.name = MACHINE_TYPE_NAME("versatileab"),
.parent = TYPE_MACHINE,
.class_init = versatileab_class_init,
};
static void versatile_machine_init(void)
{
type_register_static(&versatilepb_type);
type_register_static(&versatileab_type);
}
type_init(versatile_machine_init)
static void vpb_sic_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->vmsd = &vmstate_vpb_sic;
}
static const TypeInfo vpb_sic_info = {
.name = TYPE_VERSATILE_PB_SIC,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(vpb_sic_state),
.instance_init = vpb_sic_init,
.class_init = vpb_sic_class_init,
};
static void versatilepb_register_types(void)
{
type_register_static(&vpb_sic_info);
}
type_init(versatilepb_register_types)
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