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[PATCH v4 4/4] hw/riscv/virt: Add IOPMP support
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From: |
Ethan Chen |
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Subject: |
[PATCH v4 4/4] hw/riscv/virt: Add IOPMP support |
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Date: |
Wed, 22 Nov 2023 13:32:51 +0800 |
If a source device is connected to the IOPMP device, its memory access will be
checked by the IOPMP rule.
- Add 'iopmp=on' option to add an iopmp device and a dma device which is
connected to the iopmp to machine. This option is assumed to be "off"
- Add 'iopmp_cascade=on' option to add second iopmp device which is cascaded by
first iopmp device to machine. When iopmp option is "off", this option has no
effect.
Signed-off-by: Ethan Chen <ethan84@andestech.com>
---
docs/system/riscv/virt.rst | 11 +++++++
hw/riscv/Kconfig | 2 ++
hw/riscv/virt.c | 65 ++++++++++++++++++++++++++++++++++++++
include/hw/riscv/virt.h | 10 +++++-
4 files changed, 87 insertions(+), 1 deletion(-)
diff --git a/docs/system/riscv/virt.rst b/docs/system/riscv/virt.rst
index f5fa7b8b29..e1b4aa4f94 100644
--- a/docs/system/riscv/virt.rst
+++ b/docs/system/riscv/virt.rst
@@ -111,6 +111,17 @@ The following machine-specific options are supported:
having AIA IMSIC (i.e. "aia=aplic-imsic" selected). When not specified,
the default number of per-HART VS-level AIA IMSIC pages is 0.
+- iopmp=[on|off]
+
+ When this option is "on". An iopmp device and a dma device which is
connected
+ to the iopmp are added to machine. This option is assumed to be "off".
+
+- iopmp_cascade=[on|off]
+
+ When this option is "on". Second iopmp device which is cascaded by first
iopmp
+ device is added to machine. When iopmp option is "off", this option has no
+ effect. This option is assumed to be "off".
+
Running Linux kernel
--------------------
diff --git a/hw/riscv/Kconfig b/hw/riscv/Kconfig
index b6a5eb4452..c30a104aa4 100644
--- a/hw/riscv/Kconfig
+++ b/hw/riscv/Kconfig
@@ -45,6 +45,8 @@ config RISCV_VIRT
select FW_CFG_DMA
select PLATFORM_BUS
select ACPI
+ select ATCDMAC300
+ select RISCV_IOPMP
config SHAKTI_C
bool
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index c7fc97e273..92b748bfc7 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -53,6 +53,8 @@
#include "hw/display/ramfb.h"
#include "hw/acpi/aml-build.h"
#include "qapi/qapi-visit-common.h"
+#include "hw/misc/riscv_iopmp.h"
+#include "hw/dma/atcdmac300.h"
/*
* The virt machine physical address space used by some of the devices
@@ -97,6 +99,9 @@ static const MemMapEntry virt_memmap[] = {
[VIRT_UART0] = { 0x10000000, 0x100 },
[VIRT_VIRTIO] = { 0x10001000, 0x1000 },
[VIRT_FW_CFG] = { 0x10100000, 0x18 },
+ [VIRT_IOPMP] = { 0x10200000, 0x100000 },
+ [VIRT_IOPMP2] = { 0x10300000, 0x100000 },
+ [VIRT_DMAC] = { 0x10400000, 0x100000 },
[VIRT_FLASH] = { 0x20000000, 0x4000000 },
[VIRT_IMSIC_M] = { 0x24000000, VIRT_IMSIC_MAX_SIZE },
[VIRT_IMSIC_S] = { 0x28000000, VIRT_IMSIC_MAX_SIZE },
@@ -1534,6 +1539,23 @@ static void virt_machine_init(MachineState *machine)
sysbus_create_simple("goldfish_rtc", memmap[VIRT_RTC].base,
qdev_get_gpio_in(mmio_irqchip, RTC_IRQ));
+ if (s->have_iopmp) {
+ /* IOPMP */
+ DeviceState *iopmp_dev = iopmp_create(memmap[VIRT_IOPMP].base,
+ qdev_get_gpio_in(DEVICE(mmio_irqchip), IOPMP_IRQ));
+ /* DMA with IOPMP */
+ DeviceState *dmac_dev = atcdmac300_create("atcdmac300",
+ memmap[VIRT_DMAC].base, memmap[VIRT_DMAC].size,
+ qdev_get_gpio_in(DEVICE(mmio_irqchip), DMAC_IRQ));
+ atcdmac300_connect_iopmp(dmac_dev, &(IOPMP(iopmp_dev)->iopmp_as),
+ (StreamSink *)&(IOPMP(iopmp_dev)->transaction_info_sink), 0);
+ if (s->have_iopmp_cascade) {
+ DeviceState *iopmp_dev2 = iopmp_create(memmap[VIRT_IOPMP2].base,
+ qdev_get_gpio_in(DEVICE(mmio_irqchip), IOPMP2_IRQ));
+ cascade_iopmp(iopmp_dev, iopmp_dev2);
+ }
+ }
+
for (i = 0; i < ARRAY_SIZE(s->flash); i++) {
/* Map legacy -drive if=pflash to machine properties */
pflash_cfi01_legacy_drive(s->flash[i],
@@ -1628,6 +1650,35 @@ static void virt_set_aclint(Object *obj, bool value,
Error **errp)
s->have_aclint = value;
}
+static bool virt_get_iopmp(Object *obj, Error **errp)
+{
+ RISCVVirtState *s = RISCV_VIRT_MACHINE(obj);
+
+ return s->have_iopmp;
+}
+
+static void virt_set_iopmp(Object *obj, bool value, Error **errp)
+{
+ RISCVVirtState *s = RISCV_VIRT_MACHINE(obj);
+
+ s->have_iopmp = value;
+}
+
+static bool virt_get_iopmp_cascade(Object *obj, Error **errp)
+{
+ RISCVVirtState *s = RISCV_VIRT_MACHINE(obj);
+
+ return s->have_iopmp_cascade;
+}
+
+static void virt_set_iopmp_cascade(Object *obj, bool value, Error **errp)
+{
+ RISCVVirtState *s = RISCV_VIRT_MACHINE(obj);
+
+ s->have_iopmp_cascade = value;
+}
+
+
bool virt_is_acpi_enabled(RISCVVirtState *s)
{
return s->acpi != ON_OFF_AUTO_OFF;
@@ -1730,6 +1781,20 @@ static void virt_machine_class_init(ObjectClass *oc,
void *data)
NULL, NULL);
object_class_property_set_description(oc, "acpi",
"Enable ACPI");
+
+ object_class_property_add_bool(oc, "iopmp", virt_get_iopmp,
+ virt_set_iopmp);
+ object_class_property_set_description(oc, "iopmp",
+ "Set on/off to enable/disable "
+ "iopmp device");
+
+ object_class_property_add_bool(oc, "iopmp-cascade",
+ virt_get_iopmp_cascade,
+ virt_set_iopmp_cascade);
+ object_class_property_set_description(oc, "iopmp-cascade",
+ "Set on/off to enable/disable "
+ "iopmp2 device which is cascaded by "
+ "iopmp1 device");
}
static const TypeInfo virt_machine_typeinfo = {
diff --git a/include/hw/riscv/virt.h b/include/hw/riscv/virt.h
index e5c474b26e..5fa2944d29 100644
--- a/include/hw/riscv/virt.h
+++ b/include/hw/riscv/virt.h
@@ -54,6 +54,8 @@ struct RISCVVirtState {
int fdt_size;
bool have_aclint;
+ bool have_iopmp;
+ bool have_iopmp_cascade;
RISCVVirtAIAType aia_type;
int aia_guests;
char *oem_id;
@@ -82,12 +84,18 @@ enum {
VIRT_PCIE_MMIO,
VIRT_PCIE_PIO,
VIRT_PLATFORM_BUS,
- VIRT_PCIE_ECAM
+ VIRT_PCIE_ECAM,
+ VIRT_IOPMP,
+ VIRT_IOPMP2,
+ VIRT_DMAC,
};
enum {
UART0_IRQ = 10,
RTC_IRQ = 11,
+ DMAC_IRQ = 12,
+ IOPMP_IRQ = 13,
+ IOPMP2_IRQ = 14,
VIRTIO_IRQ = 1, /* 1 to 8 */
VIRTIO_COUNT = 8,
PCIE_IRQ = 0x20, /* 32 to 35 */
--
2.34.1