diff options
Diffstat (limited to 'hw/usb.h')
-rw-r--r-- | hw/usb.h | 56 |
1 files changed, 34 insertions, 22 deletions
@@ -39,11 +39,6 @@ #define USB_TOKEN_IN 0x69 /* device -> host */ #define USB_TOKEN_OUT 0xe1 /* host -> device */ -/* specific usb messages, also sent in the 'pid' parameter */ -#define USB_MSG_ATTACH 0x100 -#define USB_MSG_DETACH 0x101 -#define USB_MSG_RESET 0x102 - #define USB_RET_NODEV (-1) #define USB_RET_NAK (-2) #define USB_RET_STALL (-3) @@ -176,10 +171,13 @@ struct USBDescString { #define USB_MAX_INTERFACES 16 struct USBEndpoint { + uint8_t nr; + uint8_t pid; uint8_t type; uint8_t ifnum; int max_packet_size; USBDevice *dev; + QTAILQ_HEAD(, USBPacket) queue; }; /* definition of a USB device */ @@ -234,13 +232,10 @@ typedef struct USBDeviceClass { int (*init)(USBDevice *dev); /* - * Process USB packet. - * Called by the HC (Host Controller). - * - * Returns length of the transaction - * or one of the USB_RET_XXX codes. + * Walk (enabled) downstream ports, check for a matching device. + * Only hubs implement this. */ - int (*handle_packet)(USBDevice *dev, USBPacket *p); + USBDevice *(*find_device)(USBDevice *dev, uint8_t addr); /* * Called when a packet is canceled. @@ -297,8 +292,7 @@ typedef struct USBPortOps { void (*wakeup)(USBPort *port); /* * Note that port->dev will be different then the device from which - * the packet originated when a hub is involved, if you want the orginating - * device use p->owner + * the packet originated when a hub is involved. */ void (*complete)(USBPort *port, USBPacket *p); } USBPortOps; @@ -316,20 +310,30 @@ struct USBPort { typedef void USBCallback(USBPacket * packet, void *opaque); +typedef enum USBPacketState { + USB_PACKET_UNDEFINED = 0, + USB_PACKET_SETUP, + USB_PACKET_QUEUED, + USB_PACKET_ASYNC, + USB_PACKET_COMPLETE, + USB_PACKET_CANCELED, +} USBPacketState; + /* Structure used to hold information about an active USB packet. */ struct USBPacket { /* Data fields for use by the driver. */ int pid; - uint8_t devaddr; - uint8_t devep; + USBEndpoint *ep; QEMUIOVector iov; int result; /* transfer length or USB_RET_* status code */ /* Internal use by the USB layer. */ - USBEndpoint *owner; + USBPacketState state; + QTAILQ_ENTRY(USBPacket) queue; }; void usb_packet_init(USBPacket *p); -void usb_packet_setup(USBPacket *p, int pid, uint8_t addr, uint8_t ep); +void usb_packet_set_state(USBPacket *p, USBPacketState state); +void usb_packet_setup(USBPacket *p, int pid, USBEndpoint *ep); void usb_packet_addbuf(USBPacket *p, void *ptr, size_t len); int usb_packet_map(USBPacket *p, QEMUSGList *sgl); void usb_packet_unmap(USBPacket *p); @@ -337,6 +341,14 @@ void usb_packet_copy(USBPacket *p, void *ptr, size_t bytes); void usb_packet_skip(USBPacket *p, size_t bytes); void usb_packet_cleanup(USBPacket *p); +static inline bool usb_packet_is_inflight(USBPacket *p) +{ + return (p->state == USB_PACKET_QUEUED || + p->state == USB_PACKET_ASYNC); +} + +USBDevice *usb_find_device(USBPort *port, uint8_t addr); + int usb_handle_packet(USBDevice *dev, USBPacket *p); void usb_packet_complete(USBDevice *dev, USBPacket *p); void usb_cancel_packet(USBPacket * p); @@ -354,12 +366,11 @@ int usb_ep_get_max_packet_size(USBDevice *dev, int pid, int ep); void usb_attach(USBPort *port); void usb_detach(USBPort *port); -void usb_reset(USBPort *port); -void usb_wakeup(USBDevice *dev); -int usb_generic_handle_packet(USBDevice *s, USBPacket *p); +void usb_port_reset(USBPort *port); +void usb_device_reset(USBDevice *dev); +void usb_wakeup(USBEndpoint *ep); void usb_generic_async_ctrl_complete(USBDevice *s, USBPacket *p); int set_usb_string(uint8_t *buf, const char *str); -void usb_send_msg(USBDevice *dev, int msg); /* usb-linux.c */ USBDevice *usb_host_device_open(const char *devname); @@ -414,6 +425,7 @@ struct USBBus { struct USBBusOps { int (*register_companion)(USBBus *bus, USBPort *ports[], uint32_t portcount, uint32_t firstport); + void (*wakeup_endpoint)(USBBus *bus, USBEndpoint *ep); }; void usb_bus_new(USBBus *bus, USBBusOps *ops, DeviceState *host); @@ -451,7 +463,7 @@ extern const VMStateDescription vmstate_usb_device; .offset = vmstate_offset_value(_state, _field, USBDevice), \ } -int usb_device_handle_packet(USBDevice *dev, USBPacket *p); +USBDevice *usb_device_find_device(USBDevice *dev, uint8_t addr); void usb_device_cancel_packet(USBDevice *dev, USBPacket *p); |