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-rw-r--r--MAINTAINERS2
-rw-r--r--hw/arm/Kconfig1
-rw-r--r--hw/usb/Kconfig5
-rw-r--r--hw/usb/Makefile.objs2
-rw-r--r--hw/usb/imx-usb-phy.c225
-rw-r--r--include/hw/usb/imx-usb-phy.h53
6 files changed, 288 insertions, 0 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index 32867bc636..f8741cabdc 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -764,6 +764,8 @@ F: hw/arm/sabrelite.c
F: hw/arm/fsl-imx6.c
F: hw/misc/imx6_*.c
F: hw/ssi/imx_spi.c
+F: hw/usb/imx-usb-phy.c
+F: include/hw/usb/imx-usb-phy.h
F: include/hw/arm/fsl-imx6.h
F: include/hw/misc/imx6_*.h
F: include/hw/ssi/imx_spi.h
diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index e5a876c8d1..188419dc1e 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -373,6 +373,7 @@ config FSL_IMX6
select IMX
select IMX_FEC
select IMX_I2C
+ select IMX_USBPHY
select SDHCI
config ASPEED_SOC
diff --git a/hw/usb/Kconfig b/hw/usb/Kconfig
index 5e70ed5f7b..464348ba14 100644
--- a/hw/usb/Kconfig
+++ b/hw/usb/Kconfig
@@ -91,3 +91,8 @@ config USB_STORAGE_MTP
bool
default y
depends on USB
+
+config IMX_USBPHY
+ bool
+ default y
+ depends on USB
diff --git a/hw/usb/Makefile.objs b/hw/usb/Makefile.objs
index 2b10868937..66835e5bf7 100644
--- a/hw/usb/Makefile.objs
+++ b/hw/usb/Makefile.objs
@@ -61,3 +61,5 @@ common-obj-$(CONFIG_XEN) += xen-usb.o
xen-usb.o-cflags := $(LIBUSB_CFLAGS)
xen-usb.o-libs := $(LIBUSB_LIBS)
endif
+
+common-obj-$(CONFIG_IMX_USBPHY) += imx-usb-phy.o
diff --git a/hw/usb/imx-usb-phy.c b/hw/usb/imx-usb-phy.c
new file mode 100644
index 0000000000..e705a03a1f
--- /dev/null
+++ b/hw/usb/imx-usb-phy.c
@@ -0,0 +1,225 @@
+/*
+ * i.MX USB PHY
+ *
+ * Copyright (c) 2020 Guenter Roeck <linux@roeck-us.net>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ * We need to implement basic reset control in the PHY control register.
+ * For everything else, it is sufficient to set whatever is written.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/usb/imx-usb-phy.h"
+#include "migration/vmstate.h"
+#include "qemu/log.h"
+#include "qemu/module.h"
+
+static const VMStateDescription vmstate_imx_usbphy = {
+ .name = TYPE_IMX_USBPHY,
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32_ARRAY(usbphy, IMXUSBPHYState, USBPHY_MAX),
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+static void imx_usbphy_softreset(IMXUSBPHYState *s)
+{
+ s->usbphy[USBPHY_PWD] = 0x001e1c00;
+ s->usbphy[USBPHY_TX] = 0x10060607;
+ s->usbphy[USBPHY_RX] = 0x00000000;
+ s->usbphy[USBPHY_CTRL] = 0xc0200000;
+}
+
+static void imx_usbphy_reset(DeviceState *dev)
+{
+ IMXUSBPHYState *s = IMX_USBPHY(dev);
+
+ s->usbphy[USBPHY_STATUS] = 0x00000000;
+ s->usbphy[USBPHY_DEBUG] = 0x7f180000;
+ s->usbphy[USBPHY_DEBUG0_STATUS] = 0x00000000;
+ s->usbphy[USBPHY_DEBUG1] = 0x00001000;
+ s->usbphy[USBPHY_VERSION] = 0x04020000;
+
+ imx_usbphy_softreset(s);
+}
+
+static uint64_t imx_usbphy_read(void *opaque, hwaddr offset, unsigned size)
+{
+ IMXUSBPHYState *s = (IMXUSBPHYState *)opaque;
+ uint32_t index = offset >> 2;
+ uint32_t value;
+
+ switch (index) {
+ case USBPHY_PWD_SET:
+ case USBPHY_TX_SET:
+ case USBPHY_RX_SET:
+ case USBPHY_CTRL_SET:
+ case USBPHY_DEBUG_SET:
+ case USBPHY_DEBUG1_SET:
+ /*
+ * All REG_NAME_SET register access are in fact targeting the
+ * REG_NAME register.
+ */
+ value = s->usbphy[index - 1];
+ break;
+ case USBPHY_PWD_CLR:
+ case USBPHY_TX_CLR:
+ case USBPHY_RX_CLR:
+ case USBPHY_CTRL_CLR:
+ case USBPHY_DEBUG_CLR:
+ case USBPHY_DEBUG1_CLR:
+ /*
+ * All REG_NAME_CLR register access are in fact targeting the
+ * REG_NAME register.
+ */
+ value = s->usbphy[index - 2];
+ break;
+ case USBPHY_PWD_TOG:
+ case USBPHY_TX_TOG:
+ case USBPHY_RX_TOG:
+ case USBPHY_CTRL_TOG:
+ case USBPHY_DEBUG_TOG:
+ case USBPHY_DEBUG1_TOG:
+ /*
+ * All REG_NAME_TOG register access are in fact targeting the
+ * REG_NAME register.
+ */
+ value = s->usbphy[index - 3];
+ break;
+ default:
+ value = s->usbphy[index];
+ break;
+ }
+ return (uint64_t)value;
+}
+
+static void imx_usbphy_write(void *opaque, hwaddr offset, uint64_t value,
+ unsigned size)
+{
+ IMXUSBPHYState *s = (IMXUSBPHYState *)opaque;
+ uint32_t index = offset >> 2;
+
+ switch (index) {
+ case USBPHY_CTRL:
+ s->usbphy[index] = value;
+ if (value & USBPHY_CTRL_SFTRST) {
+ imx_usbphy_softreset(s);
+ }
+ break;
+ case USBPHY_PWD:
+ case USBPHY_TX:
+ case USBPHY_RX:
+ case USBPHY_STATUS:
+ case USBPHY_DEBUG:
+ case USBPHY_DEBUG1:
+ s->usbphy[index] = value;
+ break;
+ case USBPHY_CTRL_SET:
+ s->usbphy[index - 1] |= value;
+ if (value & USBPHY_CTRL_SFTRST) {
+ imx_usbphy_softreset(s);
+ }
+ break;
+ case USBPHY_PWD_SET:
+ case USBPHY_TX_SET:
+ case USBPHY_RX_SET:
+ case USBPHY_DEBUG_SET:
+ case USBPHY_DEBUG1_SET:
+ /*
+ * All REG_NAME_SET register access are in fact targeting the
+ * REG_NAME register. So we change the value of the REG_NAME
+ * register, setting bits passed in the value.
+ */
+ s->usbphy[index - 1] |= value;
+ break;
+ case USBPHY_PWD_CLR:
+ case USBPHY_TX_CLR:
+ case USBPHY_RX_CLR:
+ case USBPHY_CTRL_CLR:
+ case USBPHY_DEBUG_CLR:
+ case USBPHY_DEBUG1_CLR:
+ /*
+ * All REG_NAME_CLR register access are in fact targeting the
+ * REG_NAME register. So we change the value of the REG_NAME
+ * register, unsetting bits passed in the value.
+ */
+ s->usbphy[index - 2] &= ~value;
+ break;
+ case USBPHY_CTRL_TOG:
+ s->usbphy[index - 3] ^= value;
+ if ((value & USBPHY_CTRL_SFTRST) &&
+ (s->usbphy[index - 3] & USBPHY_CTRL_SFTRST)) {
+ imx_usbphy_softreset(s);
+ }
+ break;
+ case USBPHY_PWD_TOG:
+ case USBPHY_TX_TOG:
+ case USBPHY_RX_TOG:
+ case USBPHY_DEBUG_TOG:
+ case USBPHY_DEBUG1_TOG:
+ /*
+ * All REG_NAME_TOG register access are in fact targeting the
+ * REG_NAME register. So we change the value of the REG_NAME
+ * register, toggling bits passed in the value.
+ */
+ s->usbphy[index - 3] ^= value;
+ break;
+ default:
+ /* Other registers are read-only */
+ break;
+ }
+}
+
+static const struct MemoryRegionOps imx_usbphy_ops = {
+ .read = imx_usbphy_read,
+ .write = imx_usbphy_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .valid = {
+ /*
+ * Our device would not work correctly if the guest was doing
+ * unaligned access. This might not be a limitation on the real
+ * device but in practice there is no reason for a guest to access
+ * this device unaligned.
+ */
+ .min_access_size = 4,
+ .max_access_size = 4,
+ .unaligned = false,
+ },
+};
+
+static void imx_usbphy_realize(DeviceState *dev, Error **errp)
+{
+ IMXUSBPHYState *s = IMX_USBPHY(dev);
+
+ memory_region_init_io(&s->iomem, OBJECT(s), &imx_usbphy_ops, s,
+ "imx-usbphy", 0x1000);
+ sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->iomem);
+}
+
+static void imx_usbphy_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->reset = imx_usbphy_reset;
+ dc->vmsd = &vmstate_imx_usbphy;
+ dc->desc = "i.MX USB PHY Module";
+ dc->realize = imx_usbphy_realize;
+}
+
+static const TypeInfo imx_usbphy_info = {
+ .name = TYPE_IMX_USBPHY,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(IMXUSBPHYState),
+ .class_init = imx_usbphy_class_init,
+};
+
+static void imx_usbphy_register_types(void)
+{
+ type_register_static(&imx_usbphy_info);
+}
+
+type_init(imx_usbphy_register_types)
diff --git a/include/hw/usb/imx-usb-phy.h b/include/hw/usb/imx-usb-phy.h
new file mode 100644
index 0000000000..07f0235d10
--- /dev/null
+++ b/include/hw/usb/imx-usb-phy.h
@@ -0,0 +1,53 @@
+#ifndef IMX_USB_PHY_H
+#define IMX_USB_PHY_H
+
+#include "hw/sysbus.h"
+#include "qemu/bitops.h"
+
+enum IMXUsbPhyRegisters {
+ USBPHY_PWD,
+ USBPHY_PWD_SET,
+ USBPHY_PWD_CLR,
+ USBPHY_PWD_TOG,
+ USBPHY_TX,
+ USBPHY_TX_SET,
+ USBPHY_TX_CLR,
+ USBPHY_TX_TOG,
+ USBPHY_RX,
+ USBPHY_RX_SET,
+ USBPHY_RX_CLR,
+ USBPHY_RX_TOG,
+ USBPHY_CTRL,
+ USBPHY_CTRL_SET,
+ USBPHY_CTRL_CLR,
+ USBPHY_CTRL_TOG,
+ USBPHY_STATUS,
+ USBPHY_DEBUG = 0x14,
+ USBPHY_DEBUG_SET,
+ USBPHY_DEBUG_CLR,
+ USBPHY_DEBUG_TOG,
+ USBPHY_DEBUG0_STATUS,
+ USBPHY_DEBUG1 = 0x1c,
+ USBPHY_DEBUG1_SET,
+ USBPHY_DEBUG1_CLR,
+ USBPHY_DEBUG1_TOG,
+ USBPHY_VERSION,
+ USBPHY_MAX
+};
+
+#define USBPHY_CTRL_SFTRST BIT(31)
+
+#define TYPE_IMX_USBPHY "imx.usbphy"
+#define IMX_USBPHY(obj) OBJECT_CHECK(IMXUSBPHYState, (obj), TYPE_IMX_USBPHY)
+
+typedef struct IMXUSBPHYState {
+ /* <private> */
+ SysBusDevice parent_obj;
+
+ /* <public> */
+ MemoryRegion iomem;
+
+ uint32_t usbphy[USBPHY_MAX];
+} IMXUSBPHYState;
+
+#endif /* IMX_USB_PHY_H */
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-23 14:45:43 +0000