This patch makes qemu assign a port when creating the device, not when attaching it. For most usb devices this isn't a noticable difference because they are in attached state all the time. The change affects usb-host devices which live in detached state while the real device is unplugged from the host. They have a fixed port assigned all the time now instead of getting grabbing one on attach and releasing it at detach, i.e. they stop floating around at the usb bus. The change also allows to simplify usb-hub. It doesn't need the handle_attach() callback any more to configure the downstream ports. This can be done at device initialitation time now. The changed initialization order (first grab upstream port, then register downstream ports) also fixes some icky corner cases. For example it is not possible any more to plug the hub into one of its own downstream ports. The usb host adapters must care too. USBPort->dev being non-NULL doesn't imply any more the device is in attached state. The host adapters must additionally check the USBPort->dev->attached flag. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
392 lines
12 KiB
C
392 lines
12 KiB
C
/*
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* QEMU USB API
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*
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* Copyright (c) 2005 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "block.h"
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#include "qdev.h"
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#include "qemu-queue.h"
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/* Constants related to the USB / PCI interaction */
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#define USB_SBRN 0x60 /* Serial Bus Release Number Register */
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#define USB_RELEASE_1 0x10 /* USB 1.0 */
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#define USB_RELEASE_2 0x20 /* USB 2.0 */
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#define USB_RELEASE_3 0x30 /* USB 3.0 */
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#define USB_TOKEN_SETUP 0x2d
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#define USB_TOKEN_IN 0x69 /* device -> host */
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#define USB_TOKEN_OUT 0xe1 /* host -> device */
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/* specific usb messages, also sent in the 'pid' parameter */
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#define USB_MSG_ATTACH 0x100
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#define USB_MSG_DETACH 0x101
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#define USB_MSG_RESET 0x102
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#define USB_RET_NODEV (-1)
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#define USB_RET_NAK (-2)
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#define USB_RET_STALL (-3)
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#define USB_RET_BABBLE (-4)
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#define USB_RET_ASYNC (-5)
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#define USB_SPEED_LOW 0
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#define USB_SPEED_FULL 1
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#define USB_SPEED_HIGH 2
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#define USB_SPEED_SUPER 3
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#define USB_SPEED_MASK_LOW (1 << USB_SPEED_LOW)
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#define USB_SPEED_MASK_FULL (1 << USB_SPEED_FULL)
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#define USB_SPEED_MASK_HIGH (1 << USB_SPEED_HIGH)
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#define USB_SPEED_MASK_SUPER (1 << USB_SPEED_SUPER)
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#define USB_STATE_NOTATTACHED 0
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#define USB_STATE_ATTACHED 1
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//#define USB_STATE_POWERED 2
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#define USB_STATE_DEFAULT 3
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//#define USB_STATE_ADDRESS 4
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//#define USB_STATE_CONFIGURED 5
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#define USB_STATE_SUSPENDED 6
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#define USB_CLASS_AUDIO 1
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#define USB_CLASS_COMM 2
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#define USB_CLASS_HID 3
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#define USB_CLASS_PHYSICAL 5
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#define USB_CLASS_STILL_IMAGE 6
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#define USB_CLASS_PRINTER 7
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#define USB_CLASS_MASS_STORAGE 8
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#define USB_CLASS_HUB 9
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#define USB_CLASS_CDC_DATA 0x0a
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#define USB_CLASS_CSCID 0x0b
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#define USB_CLASS_CONTENT_SEC 0x0d
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#define USB_CLASS_APP_SPEC 0xfe
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#define USB_CLASS_VENDOR_SPEC 0xff
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#define USB_DIR_OUT 0
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#define USB_DIR_IN 0x80
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#define USB_TYPE_MASK (0x03 << 5)
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#define USB_TYPE_STANDARD (0x00 << 5)
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#define USB_TYPE_CLASS (0x01 << 5)
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#define USB_TYPE_VENDOR (0x02 << 5)
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#define USB_TYPE_RESERVED (0x03 << 5)
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#define USB_RECIP_MASK 0x1f
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#define USB_RECIP_DEVICE 0x00
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#define USB_RECIP_INTERFACE 0x01
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#define USB_RECIP_ENDPOINT 0x02
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#define USB_RECIP_OTHER 0x03
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#define DeviceRequest ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
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#define DeviceOutRequest ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
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#define InterfaceRequest \
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((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
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#define InterfaceOutRequest \
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((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
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#define EndpointRequest ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)
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#define EndpointOutRequest \
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((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)
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#define ClassInterfaceRequest \
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((USB_DIR_IN|USB_TYPE_CLASS|USB_RECIP_INTERFACE)<<8)
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#define ClassInterfaceOutRequest \
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((USB_DIR_OUT|USB_TYPE_CLASS|USB_RECIP_INTERFACE)<<8)
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#define USB_REQ_GET_STATUS 0x00
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#define USB_REQ_CLEAR_FEATURE 0x01
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#define USB_REQ_SET_FEATURE 0x03
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#define USB_REQ_SET_ADDRESS 0x05
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#define USB_REQ_GET_DESCRIPTOR 0x06
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#define USB_REQ_SET_DESCRIPTOR 0x07
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#define USB_REQ_GET_CONFIGURATION 0x08
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#define USB_REQ_SET_CONFIGURATION 0x09
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#define USB_REQ_GET_INTERFACE 0x0A
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#define USB_REQ_SET_INTERFACE 0x0B
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#define USB_REQ_SYNCH_FRAME 0x0C
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#define USB_DEVICE_SELF_POWERED 0
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#define USB_DEVICE_REMOTE_WAKEUP 1
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#define USB_DT_DEVICE 0x01
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#define USB_DT_CONFIG 0x02
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#define USB_DT_STRING 0x03
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#define USB_DT_INTERFACE 0x04
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#define USB_DT_ENDPOINT 0x05
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#define USB_DT_DEVICE_QUALIFIER 0x06
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#define USB_DT_OTHER_SPEED_CONFIG 0x07
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#define USB_DT_DEBUG 0x0A
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#define USB_DT_INTERFACE_ASSOC 0x0B
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#define USB_ENDPOINT_XFER_CONTROL 0
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#define USB_ENDPOINT_XFER_ISOC 1
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#define USB_ENDPOINT_XFER_BULK 2
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#define USB_ENDPOINT_XFER_INT 3
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typedef struct USBBus USBBus;
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typedef struct USBBusOps USBBusOps;
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typedef struct USBPort USBPort;
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typedef struct USBDevice USBDevice;
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typedef struct USBDeviceInfo USBDeviceInfo;
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typedef struct USBPacket USBPacket;
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typedef struct USBDesc USBDesc;
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typedef struct USBDescID USBDescID;
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typedef struct USBDescDevice USBDescDevice;
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typedef struct USBDescConfig USBDescConfig;
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typedef struct USBDescIfaceAssoc USBDescIfaceAssoc;
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typedef struct USBDescIface USBDescIface;
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typedef struct USBDescEndpoint USBDescEndpoint;
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typedef struct USBDescOther USBDescOther;
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typedef struct USBDescString USBDescString;
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struct USBDescString {
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uint8_t index;
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char *str;
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QLIST_ENTRY(USBDescString) next;
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};
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/* definition of a USB device */
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struct USBDevice {
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DeviceState qdev;
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USBDeviceInfo *info;
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USBPort *port;
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char *port_path;
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void *opaque;
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/* Actual connected speed */
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int speed;
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/* Supported speeds, not in info because it may be variable (hostdevs) */
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int speedmask;
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uint8_t addr;
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char product_desc[32];
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int auto_attach;
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int attached;
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int32_t state;
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uint8_t setup_buf[8];
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uint8_t data_buf[4096];
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int32_t remote_wakeup;
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int32_t setup_state;
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int32_t setup_len;
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int32_t setup_index;
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QLIST_HEAD(, USBDescString) strings;
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const USBDescDevice *device;
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const USBDescConfig *config;
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};
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struct USBDeviceInfo {
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DeviceInfo qdev;
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int (*init)(USBDevice *dev);
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/*
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* Process USB packet.
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* Called by the HC (Host Controller).
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*
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* Returns length of the transaction
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* or one of the USB_RET_XXX codes.
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*/
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int (*handle_packet)(USBDevice *dev, USBPacket *p);
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/*
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* Called when a packet is canceled.
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*/
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void (*cancel_packet)(USBDevice *dev, USBPacket *p);
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/*
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* Called when device is destroyed.
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*/
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void (*handle_destroy)(USBDevice *dev);
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/*
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* Attach the device
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*/
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void (*handle_attach)(USBDevice *dev);
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/*
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* Reset the device
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*/
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void (*handle_reset)(USBDevice *dev);
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/*
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* Process control request.
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* Called from handle_packet().
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*
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* Returns length or one of the USB_RET_ codes.
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*/
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int (*handle_control)(USBDevice *dev, USBPacket *p, int request, int value,
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int index, int length, uint8_t *data);
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/*
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* Process data transfers (both BULK and ISOC).
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* Called from handle_packet().
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*
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* Returns length or one of the USB_RET_ codes.
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*/
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int (*handle_data)(USBDevice *dev, USBPacket *p);
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const char *product_desc;
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const USBDesc *usb_desc;
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/* handle legacy -usbdevice command line options */
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const char *usbdevice_name;
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USBDevice *(*usbdevice_init)(const char *params);
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};
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typedef struct USBPortOps {
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void (*attach)(USBPort *port);
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void (*detach)(USBPort *port);
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/*
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* This gets called when a device downstream from the device attached to
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* the port (iow attached through a hub) gets detached.
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*/
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void (*child_detach)(USBPort *port, USBDevice *child);
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void (*wakeup)(USBPort *port);
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/*
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* Note that port->dev will be different then the device from which
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* the packet originated when a hub is involved, if you want the orginating
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* device use p->owner
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*/
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void (*complete)(USBPort *port, USBPacket *p);
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} USBPortOps;
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/* USB port on which a device can be connected */
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struct USBPort {
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USBDevice *dev;
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int speedmask;
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char path[16];
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USBPortOps *ops;
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void *opaque;
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int index; /* internal port index, may be used with the opaque */
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QTAILQ_ENTRY(USBPort) next;
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};
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typedef void USBCallback(USBPacket * packet, void *opaque);
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/* Structure used to hold information about an active USB packet. */
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struct USBPacket {
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/* Data fields for use by the driver. */
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int pid;
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uint8_t devaddr;
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uint8_t devep;
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QEMUIOVector iov;
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int result; /* transfer length or USB_RET_* status code */
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/* Internal use by the USB layer. */
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USBDevice *owner;
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};
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void usb_packet_init(USBPacket *p);
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void usb_packet_setup(USBPacket *p, int pid, uint8_t addr, uint8_t ep);
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void usb_packet_addbuf(USBPacket *p, void *ptr, size_t len);
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int usb_packet_map(USBPacket *p, QEMUSGList *sgl);
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void usb_packet_unmap(USBPacket *p);
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void usb_packet_copy(USBPacket *p, void *ptr, size_t bytes);
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void usb_packet_skip(USBPacket *p, size_t bytes);
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void usb_packet_cleanup(USBPacket *p);
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int usb_handle_packet(USBDevice *dev, USBPacket *p);
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void usb_packet_complete(USBDevice *dev, USBPacket *p);
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void usb_cancel_packet(USBPacket * p);
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void usb_attach(USBPort *port);
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void usb_detach(USBPort *port);
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void usb_wakeup(USBDevice *dev);
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int usb_generic_handle_packet(USBDevice *s, USBPacket *p);
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void usb_generic_async_ctrl_complete(USBDevice *s, USBPacket *p);
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int set_usb_string(uint8_t *buf, const char *str);
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void usb_send_msg(USBDevice *dev, int msg);
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/* usb-linux.c */
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USBDevice *usb_host_device_open(const char *devname);
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int usb_host_device_close(const char *devname);
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void usb_host_info(Monitor *mon);
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/* usb-bt.c */
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USBDevice *usb_bt_init(HCIInfo *hci);
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/* usb ports of the VM */
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#define VM_USB_HUB_SIZE 8
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/* usb-musb.c */
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enum musb_irq_source_e {
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musb_irq_suspend = 0,
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musb_irq_resume,
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musb_irq_rst_babble,
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musb_irq_sof,
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musb_irq_connect,
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musb_irq_disconnect,
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musb_irq_vbus_request,
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musb_irq_vbus_error,
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musb_irq_rx,
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musb_irq_tx,
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musb_set_vbus,
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musb_set_session,
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__musb_irq_max,
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};
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typedef struct MUSBState MUSBState;
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MUSBState *musb_init(qemu_irq *irqs);
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uint32_t musb_core_intr_get(MUSBState *s);
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void musb_core_intr_clear(MUSBState *s, uint32_t mask);
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void musb_set_size(MUSBState *s, int epnum, int size, int is_tx);
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/* usb-bus.c */
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struct USBBus {
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BusState qbus;
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USBBusOps *ops;
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int busnr;
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int nfree;
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int nused;
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QTAILQ_HEAD(, USBPort) free;
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QTAILQ_HEAD(, USBPort) used;
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QTAILQ_ENTRY(USBBus) next;
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};
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struct USBBusOps {
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int (*register_companion)(USBBus *bus, USBPort *ports[],
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uint32_t portcount, uint32_t firstport);
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};
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void usb_bus_new(USBBus *bus, USBBusOps *ops, DeviceState *host);
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USBBus *usb_bus_find(int busnr);
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void usb_qdev_register(USBDeviceInfo *info);
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void usb_qdev_register_many(USBDeviceInfo *info);
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USBDevice *usb_create(USBBus *bus, const char *name);
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USBDevice *usb_create_simple(USBBus *bus, const char *name);
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USBDevice *usbdevice_create(const char *cmdline);
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void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index,
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USBPortOps *ops, int speedmask);
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int usb_register_companion(const char *masterbus, USBPort *ports[],
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uint32_t portcount, uint32_t firstport,
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void *opaque, USBPortOps *ops, int speedmask);
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void usb_port_location(USBPort *downstream, USBPort *upstream, int portnr);
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void usb_unregister_port(USBBus *bus, USBPort *port);
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int usb_claim_port(USBDevice *dev);
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void usb_release_port(USBDevice *dev);
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int usb_device_attach(USBDevice *dev);
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int usb_device_detach(USBDevice *dev);
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int usb_device_delete_addr(int busnr, int addr);
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static inline USBBus *usb_bus_from_device(USBDevice *d)
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{
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return DO_UPCAST(USBBus, qbus, d->qdev.parent_bus);
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}
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