| /* |
| * QEMU USB HUB emulation |
| * |
| * Copyright (c) 2005 Fabrice Bellard |
| * |
| * 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-common.h" |
| #include "usb.h" |
| #include "usb-desc.h" |
| |
| //#define DEBUG |
| |
| #define NUM_PORTS 8 |
| |
| typedef struct USBHubPort { |
| USBPort port; |
| uint16_t wPortStatus; |
| uint16_t wPortChange; |
| } USBHubPort; |
| |
| typedef struct USBHubState { |
| USBDevice dev; |
| USBHubPort ports[NUM_PORTS]; |
| } USBHubState; |
| |
| #define ClearHubFeature (0x2000 | USB_REQ_CLEAR_FEATURE) |
| #define ClearPortFeature (0x2300 | USB_REQ_CLEAR_FEATURE) |
| #define GetHubDescriptor (0xa000 | USB_REQ_GET_DESCRIPTOR) |
| #define GetHubStatus (0xa000 | USB_REQ_GET_STATUS) |
| #define GetPortStatus (0xa300 | USB_REQ_GET_STATUS) |
| #define SetHubFeature (0x2000 | USB_REQ_SET_FEATURE) |
| #define SetPortFeature (0x2300 | USB_REQ_SET_FEATURE) |
| |
| #define PORT_STAT_CONNECTION 0x0001 |
| #define PORT_STAT_ENABLE 0x0002 |
| #define PORT_STAT_SUSPEND 0x0004 |
| #define PORT_STAT_OVERCURRENT 0x0008 |
| #define PORT_STAT_RESET 0x0010 |
| #define PORT_STAT_POWER 0x0100 |
| #define PORT_STAT_LOW_SPEED 0x0200 |
| #define PORT_STAT_HIGH_SPEED 0x0400 |
| #define PORT_STAT_TEST 0x0800 |
| #define PORT_STAT_INDICATOR 0x1000 |
| |
| #define PORT_STAT_C_CONNECTION 0x0001 |
| #define PORT_STAT_C_ENABLE 0x0002 |
| #define PORT_STAT_C_SUSPEND 0x0004 |
| #define PORT_STAT_C_OVERCURRENT 0x0008 |
| #define PORT_STAT_C_RESET 0x0010 |
| |
| #define PORT_CONNECTION 0 |
| #define PORT_ENABLE 1 |
| #define PORT_SUSPEND 2 |
| #define PORT_OVERCURRENT 3 |
| #define PORT_RESET 4 |
| #define PORT_POWER 8 |
| #define PORT_LOWSPEED 9 |
| #define PORT_HIGHSPEED 10 |
| #define PORT_C_CONNECTION 16 |
| #define PORT_C_ENABLE 17 |
| #define PORT_C_SUSPEND 18 |
| #define PORT_C_OVERCURRENT 19 |
| #define PORT_C_RESET 20 |
| #define PORT_TEST 21 |
| #define PORT_INDICATOR 22 |
| |
| /* same as Linux kernel root hubs */ |
| |
| enum { |
| STR_MANUFACTURER = 1, |
| STR_PRODUCT, |
| STR_SERIALNUMBER, |
| }; |
| |
| static const USBDescStrings desc_strings = { |
| [STR_MANUFACTURER] = "QEMU " QEMU_VERSION, |
| [STR_PRODUCT] = "QEMU USB Hub", |
| [STR_SERIALNUMBER] = "314159", |
| }; |
| |
| static const USBDescIface desc_iface_hub = { |
| .bInterfaceNumber = 0, |
| .bNumEndpoints = 1, |
| .bInterfaceClass = USB_CLASS_HUB, |
| .eps = (USBDescEndpoint[]) { |
| { |
| .bEndpointAddress = USB_DIR_IN | 0x01, |
| .bmAttributes = USB_ENDPOINT_XFER_INT, |
| .wMaxPacketSize = 1 + (NUM_PORTS + 7) / 8, |
| .bInterval = 0xff, |
| }, |
| } |
| }; |
| |
| static const USBDescDevice desc_device_hub = { |
| .bcdUSB = 0x0110, |
| .bDeviceClass = USB_CLASS_HUB, |
| .bMaxPacketSize0 = 8, |
| .bNumConfigurations = 1, |
| .confs = (USBDescConfig[]) { |
| { |
| .bNumInterfaces = 1, |
| .bConfigurationValue = 1, |
| .bmAttributes = 0xe0, |
| .nif = 1, |
| .ifs = &desc_iface_hub, |
| }, |
| }, |
| }; |
| |
| static const USBDesc desc_hub = { |
| .id = { |
| .idVendor = 0x0409, |
| .idProduct = 0x55aa, |
| .bcdDevice = 0x0101, |
| .iManufacturer = STR_MANUFACTURER, |
| .iProduct = STR_PRODUCT, |
| .iSerialNumber = STR_SERIALNUMBER, |
| }, |
| .full = &desc_device_hub, |
| .str = desc_strings, |
| }; |
| |
| static const uint8_t qemu_hub_hub_descriptor[] = |
| { |
| 0x00, /* u8 bLength; patched in later */ |
| 0x29, /* u8 bDescriptorType; Hub-descriptor */ |
| 0x00, /* u8 bNbrPorts; (patched later) */ |
| 0x0a, /* u16 wHubCharacteristics; */ |
| 0x00, /* (per-port OC, no power switching) */ |
| 0x01, /* u8 bPwrOn2pwrGood; 2ms */ |
| 0x00 /* u8 bHubContrCurrent; 0 mA */ |
| |
| /* DeviceRemovable and PortPwrCtrlMask patched in later */ |
| }; |
| |
| static void usb_hub_attach(USBPort *port1) |
| { |
| USBHubState *s = port1->opaque; |
| USBHubPort *port = &s->ports[port1->index]; |
| |
| port->wPortStatus |= PORT_STAT_CONNECTION; |
| port->wPortChange |= PORT_STAT_C_CONNECTION; |
| if (port->port.dev->speed == USB_SPEED_LOW) { |
| port->wPortStatus |= PORT_STAT_LOW_SPEED; |
| } else { |
| port->wPortStatus &= ~PORT_STAT_LOW_SPEED; |
| } |
| usb_wakeup(&s->dev); |
| } |
| |
| static void usb_hub_detach(USBPort *port1) |
| { |
| USBHubState *s = port1->opaque; |
| USBHubPort *port = &s->ports[port1->index]; |
| |
| usb_wakeup(&s->dev); |
| |
| /* Let upstream know the device on this port is gone */ |
| s->dev.port->ops->child_detach(s->dev.port, port1->dev); |
| |
| port->wPortStatus &= ~PORT_STAT_CONNECTION; |
| port->wPortChange |= PORT_STAT_C_CONNECTION; |
| if (port->wPortStatus & PORT_STAT_ENABLE) { |
| port->wPortStatus &= ~PORT_STAT_ENABLE; |
| port->wPortChange |= PORT_STAT_C_ENABLE; |
| } |
| } |
| |
| static void usb_hub_child_detach(USBPort *port1, USBDevice *child) |
| { |
| USBHubState *s = port1->opaque; |
| |
| /* Pass along upstream */ |
| s->dev.port->ops->child_detach(s->dev.port, child); |
| } |
| |
| static void usb_hub_wakeup(USBPort *port1) |
| { |
| USBHubState *s = port1->opaque; |
| USBHubPort *port = &s->ports[port1->index]; |
| |
| if (port->wPortStatus & PORT_STAT_SUSPEND) { |
| port->wPortChange |= PORT_STAT_C_SUSPEND; |
| usb_wakeup(&s->dev); |
| } |
| } |
| |
| static void usb_hub_complete(USBPort *port, USBPacket *packet) |
| { |
| USBHubState *s = port->opaque; |
| |
| /* |
| * Just pass it along upstream for now. |
| * |
| * If we ever implement usb 2.0 split transactions this will |
| * become a little more complicated ... |
| * |
| * Can't use usb_packet_complete() here because packet->owner is |
| * cleared already, go call the ->complete() callback directly |
| * instead. |
| */ |
| s->dev.port->ops->complete(s->dev.port, packet); |
| } |
| |
| static void usb_hub_handle_reset(USBDevice *dev) |
| { |
| USBHubState *s = DO_UPCAST(USBHubState, dev, dev); |
| USBHubPort *port; |
| int i; |
| |
| for (i = 0; i < NUM_PORTS; i++) { |
| port = s->ports + i; |
| port->wPortStatus = PORT_STAT_POWER; |
| port->wPortChange = 0; |
| if (port->port.dev && port->port.dev->attached) { |
| port->wPortStatus |= PORT_STAT_CONNECTION; |
| port->wPortChange |= PORT_STAT_C_CONNECTION; |
| if (port->port.dev->speed == USB_SPEED_LOW) { |
| port->wPortStatus |= PORT_STAT_LOW_SPEED; |
| } |
| } |
| } |
| } |
| |
| static int usb_hub_handle_control(USBDevice *dev, USBPacket *p, |
| int request, int value, int index, int length, uint8_t *data) |
| { |
| USBHubState *s = (USBHubState *)dev; |
| int ret; |
| |
| ret = usb_desc_handle_control(dev, p, request, value, index, length, data); |
| if (ret >= 0) { |
| return ret; |
| } |
| |
| switch(request) { |
| case EndpointOutRequest | USB_REQ_CLEAR_FEATURE: |
| if (value == 0 && index != 0x81) { /* clear ep halt */ |
| goto fail; |
| } |
| ret = 0; |
| break; |
| /* usb specific requests */ |
| case GetHubStatus: |
| data[0] = 0; |
| data[1] = 0; |
| data[2] = 0; |
| data[3] = 0; |
| ret = 4; |
| break; |
| case GetPortStatus: |
| { |
| unsigned int n = index - 1; |
| USBHubPort *port; |
| if (n >= NUM_PORTS) { |
| goto fail; |
| } |
| port = &s->ports[n]; |
| data[0] = port->wPortStatus; |
| data[1] = port->wPortStatus >> 8; |
| data[2] = port->wPortChange; |
| data[3] = port->wPortChange >> 8; |
| ret = 4; |
| } |
| break; |
| case SetHubFeature: |
| case ClearHubFeature: |
| if (value == 0 || value == 1) { |
| } else { |
| goto fail; |
| } |
| ret = 0; |
| break; |
| case SetPortFeature: |
| { |
| unsigned int n = index - 1; |
| USBHubPort *port; |
| USBDevice *dev; |
| if (n >= NUM_PORTS) { |
| goto fail; |
| } |
| port = &s->ports[n]; |
| dev = port->port.dev; |
| switch(value) { |
| case PORT_SUSPEND: |
| port->wPortStatus |= PORT_STAT_SUSPEND; |
| break; |
| case PORT_RESET: |
| if (dev && dev->attached) { |
| usb_send_msg(dev, USB_MSG_RESET); |
| port->wPortChange |= PORT_STAT_C_RESET; |
| /* set enable bit */ |
| port->wPortStatus |= PORT_STAT_ENABLE; |
| } |
| break; |
| case PORT_POWER: |
| break; |
| default: |
| goto fail; |
| } |
| ret = 0; |
| } |
| break; |
| case ClearPortFeature: |
| { |
| unsigned int n = index - 1; |
| USBHubPort *port; |
| |
| if (n >= NUM_PORTS) { |
| goto fail; |
| } |
| port = &s->ports[n]; |
| switch(value) { |
| case PORT_ENABLE: |
| port->wPortStatus &= ~PORT_STAT_ENABLE; |
| break; |
| case PORT_C_ENABLE: |
| port->wPortChange &= ~PORT_STAT_C_ENABLE; |
| break; |
| case PORT_SUSPEND: |
| port->wPortStatus &= ~PORT_STAT_SUSPEND; |
| break; |
| case PORT_C_SUSPEND: |
| port->wPortChange &= ~PORT_STAT_C_SUSPEND; |
| break; |
| case PORT_C_CONNECTION: |
| port->wPortChange &= ~PORT_STAT_C_CONNECTION; |
| break; |
| case PORT_C_OVERCURRENT: |
| port->wPortChange &= ~PORT_STAT_C_OVERCURRENT; |
| break; |
| case PORT_C_RESET: |
| port->wPortChange &= ~PORT_STAT_C_RESET; |
| break; |
| default: |
| goto fail; |
| } |
| ret = 0; |
| } |
| break; |
| case GetHubDescriptor: |
| { |
| unsigned int n, limit, var_hub_size = 0; |
| memcpy(data, qemu_hub_hub_descriptor, |
| sizeof(qemu_hub_hub_descriptor)); |
| data[2] = NUM_PORTS; |
| |
| /* fill DeviceRemovable bits */ |
| limit = ((NUM_PORTS + 1 + 7) / 8) + 7; |
| for (n = 7; n < limit; n++) { |
| data[n] = 0x00; |
| var_hub_size++; |
| } |
| |
| /* fill PortPwrCtrlMask bits */ |
| limit = limit + ((NUM_PORTS + 7) / 8); |
| for (;n < limit; n++) { |
| data[n] = 0xff; |
| var_hub_size++; |
| } |
| |
| ret = sizeof(qemu_hub_hub_descriptor) + var_hub_size; |
| data[0] = ret; |
| break; |
| } |
| default: |
| fail: |
| ret = USB_RET_STALL; |
| break; |
| } |
| return ret; |
| } |
| |
| static int usb_hub_handle_data(USBDevice *dev, USBPacket *p) |
| { |
| USBHubState *s = (USBHubState *)dev; |
| int ret; |
| |
| switch(p->pid) { |
| case USB_TOKEN_IN: |
| if (p->devep == 1) { |
| USBHubPort *port; |
| unsigned int status; |
| uint8_t buf[4]; |
| int i, n; |
| n = (NUM_PORTS + 1 + 7) / 8; |
| if (p->iov.size == 1) { /* FreeBSD workaround */ |
| n = 1; |
| } else if (n > p->iov.size) { |
| return USB_RET_BABBLE; |
| } |
| status = 0; |
| for(i = 0; i < NUM_PORTS; i++) { |
| port = &s->ports[i]; |
| if (port->wPortChange) |
| status |= (1 << (i + 1)); |
| } |
| if (status != 0) { |
| for(i = 0; i < n; i++) { |
| buf[i] = status >> (8 * i); |
| } |
| usb_packet_copy(p, buf, n); |
| ret = n; |
| } else { |
| ret = USB_RET_NAK; /* usb11 11.13.1 */ |
| } |
| } else { |
| goto fail; |
| } |
| break; |
| case USB_TOKEN_OUT: |
| default: |
| fail: |
| ret = USB_RET_STALL; |
| break; |
| } |
| return ret; |
| } |
| |
| static int usb_hub_broadcast_packet(USBHubState *s, USBPacket *p) |
| { |
| USBHubPort *port; |
| USBDevice *dev; |
| int i, ret; |
| |
| for(i = 0; i < NUM_PORTS; i++) { |
| port = &s->ports[i]; |
| dev = port->port.dev; |
| if (dev && dev->attached && (port->wPortStatus & PORT_STAT_ENABLE)) { |
| ret = usb_handle_packet(dev, p); |
| if (ret != USB_RET_NODEV) { |
| return ret; |
| } |
| } |
| } |
| return USB_RET_NODEV; |
| } |
| |
| static int usb_hub_handle_packet(USBDevice *dev, USBPacket *p) |
| { |
| USBHubState *s = (USBHubState *)dev; |
| |
| #if defined(DEBUG) && 0 |
| printf("usb_hub: pid=0x%x\n", pid); |
| #endif |
| if (dev->state == USB_STATE_DEFAULT && |
| dev->addr != 0 && |
| p->devaddr != dev->addr && |
| (p->pid == USB_TOKEN_SETUP || |
| p->pid == USB_TOKEN_OUT || |
| p->pid == USB_TOKEN_IN)) { |
| /* broadcast the packet to the devices */ |
| return usb_hub_broadcast_packet(s, p); |
| } |
| return usb_generic_handle_packet(dev, p); |
| } |
| |
| static void usb_hub_handle_destroy(USBDevice *dev) |
| { |
| USBHubState *s = (USBHubState *)dev; |
| int i; |
| |
| for (i = 0; i < NUM_PORTS; i++) { |
| usb_unregister_port(usb_bus_from_device(dev), |
| &s->ports[i].port); |
| } |
| } |
| |
| static USBPortOps usb_hub_port_ops = { |
| .attach = usb_hub_attach, |
| .detach = usb_hub_detach, |
| .child_detach = usb_hub_child_detach, |
| .wakeup = usb_hub_wakeup, |
| .complete = usb_hub_complete, |
| }; |
| |
| static int usb_hub_initfn(USBDevice *dev) |
| { |
| USBHubState *s = DO_UPCAST(USBHubState, dev, dev); |
| USBHubPort *port; |
| int i; |
| |
| usb_desc_init(dev); |
| for (i = 0; i < NUM_PORTS; i++) { |
| port = &s->ports[i]; |
| usb_register_port(usb_bus_from_device(dev), |
| &port->port, s, i, &usb_hub_port_ops, |
| USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL); |
| usb_port_location(&port->port, dev->port, i+1); |
| } |
| usb_hub_handle_reset(dev); |
| return 0; |
| } |
| |
| static const VMStateDescription vmstate_usb_hub_port = { |
| .name = "usb-hub-port", |
| .version_id = 1, |
| .minimum_version_id = 1, |
| .fields = (VMStateField []) { |
| VMSTATE_UINT16(wPortStatus, USBHubPort), |
| VMSTATE_UINT16(wPortChange, USBHubPort), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| static const VMStateDescription vmstate_usb_hub = { |
| .name = "usb-hub", |
| .version_id = 1, |
| .minimum_version_id = 1, |
| .fields = (VMStateField []) { |
| VMSTATE_USB_DEVICE(dev, USBHubState), |
| VMSTATE_STRUCT_ARRAY(ports, USBHubState, NUM_PORTS, 0, |
| vmstate_usb_hub_port, USBHubPort), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| static struct USBDeviceInfo hub_info = { |
| .product_desc = "QEMU USB Hub", |
| .qdev.name = "usb-hub", |
| .qdev.fw_name = "hub", |
| .qdev.size = sizeof(USBHubState), |
| .qdev.vmsd = &vmstate_usb_hub, |
| .usb_desc = &desc_hub, |
| .init = usb_hub_initfn, |
| .handle_packet = usb_hub_handle_packet, |
| .handle_reset = usb_hub_handle_reset, |
| .handle_control = usb_hub_handle_control, |
| .handle_data = usb_hub_handle_data, |
| .handle_destroy = usb_hub_handle_destroy, |
| }; |
| |
| static void usb_hub_register_devices(void) |
| { |
| usb_qdev_register(&hub_info); |
| } |
| device_init(usb_hub_register_devices) |