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qemu-e2k/hw/usb.h
David Gibson e2f89926f1 usb: Convert usb_packet_{map, unmap} to universal DMA helpers 
The USB UHCI and EHCI drivers were converted some time ago to use the
pci_dma_*() helper functions.  However, this conversion was not complete
because in some places both these drivers do DMA via the usb_packet_map()
function in usb-libhw.c.  That function directly used
cpu_physical_memory_map().

Now that the sglist code uses DMA wrappers properly, we can convert the
functions in usb-libhw.c, thus conpleting the conversion of UHCI and EHCI
to use the DMA wrappers.

Note that usb_packet_map() invokes dma_memory_map() with a NULL invalidate
callback function.  When IOMMU support is added, this will mean that
usb_packet_map() and the corresponding usb_packet_unmap() must be called in
close proximity without dropping the qemu device lock - otherwise the guest
might invalidate IOMMU mappings while they are still in use by the device
code.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-06-27 16:33:25 -05:00

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#ifndef QEMU_USB_H
#define QEMU_USB_H
/*
* QEMU USB API
*
* 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 "block.h"
#include "qdev.h"
#include "qemu-queue.h"
/* Constants related to the USB / PCI interaction */
#define USB_SBRN 0x60 /* Serial Bus Release Number Register */
#define USB_RELEASE_1 0x10 /* USB 1.0 */
#define USB_RELEASE_2 0x20 /* USB 2.0 */
#define USB_RELEASE_3 0x30 /* USB 3.0 */
#define USB_TOKEN_SETUP 0x2d
#define USB_TOKEN_IN 0x69 /* device -> host */
#define USB_TOKEN_OUT 0xe1 /* host -> device */
#define USB_RET_NODEV (-1)
#define USB_RET_NAK (-2)
#define USB_RET_STALL (-3)
#define USB_RET_BABBLE (-4)
#define USB_RET_IOERROR (-5)
#define USB_RET_ASYNC (-6)
#define USB_SPEED_LOW 0
#define USB_SPEED_FULL 1
#define USB_SPEED_HIGH 2
#define USB_SPEED_SUPER 3
#define USB_SPEED_MASK_LOW (1 << USB_SPEED_LOW)
#define USB_SPEED_MASK_FULL (1 << USB_SPEED_FULL)
#define USB_SPEED_MASK_HIGH (1 << USB_SPEED_HIGH)
#define USB_SPEED_MASK_SUPER (1 << USB_SPEED_SUPER)
#define USB_STATE_NOTATTACHED 0
#define USB_STATE_ATTACHED 1
//#define USB_STATE_POWERED 2
#define USB_STATE_DEFAULT 3
//#define USB_STATE_ADDRESS 4
//#define USB_STATE_CONFIGURED 5
#define USB_STATE_SUSPENDED 6
#define USB_CLASS_AUDIO 1
#define USB_CLASS_COMM 2
#define USB_CLASS_HID 3
#define USB_CLASS_PHYSICAL 5
#define USB_CLASS_STILL_IMAGE 6
#define USB_CLASS_PRINTER 7
#define USB_CLASS_MASS_STORAGE 8
#define USB_CLASS_HUB 9
#define USB_CLASS_CDC_DATA 0x0a
#define USB_CLASS_CSCID 0x0b
#define USB_CLASS_CONTENT_SEC 0x0d
#define USB_CLASS_APP_SPEC 0xfe
#define USB_CLASS_VENDOR_SPEC 0xff
#define USB_SUBCLASS_UNDEFINED 0
#define USB_SUBCLASS_AUDIO_CONTROL 1
#define USB_SUBCLASS_AUDIO_STREAMING 2
#define USB_SUBCLASS_AUDIO_MIDISTREAMING 3
#define USB_DIR_OUT 0
#define USB_DIR_IN 0x80
#define USB_TYPE_MASK (0x03 << 5)
#define USB_TYPE_STANDARD (0x00 << 5)
#define USB_TYPE_CLASS (0x01 << 5)
#define USB_TYPE_VENDOR (0x02 << 5)
#define USB_TYPE_RESERVED (0x03 << 5)
#define USB_RECIP_MASK 0x1f
#define USB_RECIP_DEVICE 0x00
#define USB_RECIP_INTERFACE 0x01
#define USB_RECIP_ENDPOINT 0x02
#define USB_RECIP_OTHER 0x03
#define DeviceRequest ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
#define DeviceOutRequest ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
#define InterfaceRequest \
((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
#define InterfaceOutRequest \
((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
#define EndpointRequest ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)
#define EndpointOutRequest \
((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)
#define ClassInterfaceRequest \
((USB_DIR_IN|USB_TYPE_CLASS|USB_RECIP_INTERFACE)<<8)
#define ClassInterfaceOutRequest \
((USB_DIR_OUT|USB_TYPE_CLASS|USB_RECIP_INTERFACE)<<8)
#define USB_REQ_GET_STATUS 0x00
#define USB_REQ_CLEAR_FEATURE 0x01
#define USB_REQ_SET_FEATURE 0x03
#define USB_REQ_SET_ADDRESS 0x05
#define USB_REQ_GET_DESCRIPTOR 0x06
#define USB_REQ_SET_DESCRIPTOR 0x07
#define USB_REQ_GET_CONFIGURATION 0x08
#define USB_REQ_SET_CONFIGURATION 0x09
#define USB_REQ_GET_INTERFACE 0x0A
#define USB_REQ_SET_INTERFACE 0x0B
#define USB_REQ_SYNCH_FRAME 0x0C
#define USB_DEVICE_SELF_POWERED 0
#define USB_DEVICE_REMOTE_WAKEUP 1
#define USB_DT_DEVICE 0x01
#define USB_DT_CONFIG 0x02
#define USB_DT_STRING 0x03
#define USB_DT_INTERFACE 0x04
#define USB_DT_ENDPOINT 0x05
#define USB_DT_DEVICE_QUALIFIER 0x06
#define USB_DT_OTHER_SPEED_CONFIG 0x07
#define USB_DT_DEBUG 0x0A
#define USB_DT_INTERFACE_ASSOC 0x0B
#define USB_DT_CS_INTERFACE 0x24
#define USB_DT_CS_ENDPOINT 0x25
#define USB_ENDPOINT_XFER_CONTROL 0
#define USB_ENDPOINT_XFER_ISOC 1
#define USB_ENDPOINT_XFER_BULK 2
#define USB_ENDPOINT_XFER_INT 3
#define USB_ENDPOINT_XFER_INVALID 255
typedef struct USBBus USBBus;
typedef struct USBBusOps USBBusOps;
typedef struct USBPort USBPort;
typedef struct USBDevice USBDevice;
typedef struct USBPacket USBPacket;
typedef struct USBEndpoint USBEndpoint;
typedef struct USBDesc USBDesc;
typedef struct USBDescID USBDescID;
typedef struct USBDescDevice USBDescDevice;
typedef struct USBDescConfig USBDescConfig;
typedef struct USBDescIfaceAssoc USBDescIfaceAssoc;
typedef struct USBDescIface USBDescIface;
typedef struct USBDescEndpoint USBDescEndpoint;
typedef struct USBDescOther USBDescOther;
typedef struct USBDescString USBDescString;
struct USBDescString {
uint8_t index;
char *str;
QLIST_ENTRY(USBDescString) next;
};
#define USB_MAX_ENDPOINTS 15
#define USB_MAX_INTERFACES 16
struct USBEndpoint {
uint8_t nr;
uint8_t pid;
uint8_t type;
uint8_t ifnum;
int max_packet_size;
bool pipeline;
USBDevice *dev;
QTAILQ_HEAD(, USBPacket) queue;
};
enum USBDeviceFlags {
USB_DEV_FLAG_FULL_PATH,
};
/* definition of a USB device */
struct USBDevice {
DeviceState qdev;
USBPort *port;
char *port_path;
void *opaque;
uint32_t flags;
/* Actual connected speed */
int speed;
/* Supported speeds, not in info because it may be variable (hostdevs) */
int speedmask;
uint8_t addr;
char product_desc[32];
int auto_attach;
int attached;
int32_t state;
uint8_t setup_buf[8];
uint8_t data_buf[4096];
int32_t remote_wakeup;
int32_t setup_state;
int32_t setup_len;
int32_t setup_index;
USBEndpoint ep_ctl;
USBEndpoint ep_in[USB_MAX_ENDPOINTS];
USBEndpoint ep_out[USB_MAX_ENDPOINTS];
QLIST_HEAD(, USBDescString) strings;
const USBDescDevice *device;
int configuration;
int ninterfaces;
int altsetting[USB_MAX_INTERFACES];
const USBDescConfig *config;
const USBDescIface *ifaces[USB_MAX_INTERFACES];
};
#define TYPE_USB_DEVICE "usb-device"
#define USB_DEVICE(obj) \
OBJECT_CHECK(USBDevice, (obj), TYPE_USB_DEVICE)
#define USB_DEVICE_CLASS(klass) \
OBJECT_CLASS_CHECK(USBDeviceClass, (klass), TYPE_USB_DEVICE)
#define USB_DEVICE_GET_CLASS(obj) \
OBJECT_GET_CLASS(USBDeviceClass, (obj), TYPE_USB_DEVICE)
typedef struct USBDeviceClass {
DeviceClass parent_class;
int (*init)(USBDevice *dev);
/*
* Walk (enabled) downstream ports, check for a matching device.
* Only hubs implement this.
*/
USBDevice *(*find_device)(USBDevice *dev, uint8_t addr);
/*
* Called when a packet is canceled.
*/
void (*cancel_packet)(USBDevice *dev, USBPacket *p);
/*
* Called when device is destroyed.
*/
void (*handle_destroy)(USBDevice *dev);
/*
* Attach the device
*/
void (*handle_attach)(USBDevice *dev);
/*
* Reset the device
*/
void (*handle_reset)(USBDevice *dev);
/*
* Process control request.
* Called from handle_packet().
*
* Returns length or one of the USB_RET_ codes.
*/
int (*handle_control)(USBDevice *dev, USBPacket *p, int request, int value,
int index, int length, uint8_t *data);
/*
* Process data transfers (both BULK and ISOC).
* Called from handle_packet().
*
* Returns length or one of the USB_RET_ codes.
*/
int (*handle_data)(USBDevice *dev, USBPacket *p);
void (*set_interface)(USBDevice *dev, int interface,
int alt_old, int alt_new);
const char *product_desc;
const USBDesc *usb_desc;
} USBDeviceClass;
typedef struct USBPortOps {
void (*attach)(USBPort *port);
void (*detach)(USBPort *port);
/*
* This gets called when a device downstream from the device attached to
* the port (iow attached through a hub) gets detached.
*/
void (*child_detach)(USBPort *port, USBDevice *child);
void (*wakeup)(USBPort *port);
/*
* Note that port->dev will be different then the device from which
* the packet originated when a hub is involved.
*/
void (*complete)(USBPort *port, USBPacket *p);
} USBPortOps;
/* USB port on which a device can be connected */
struct USBPort {
USBDevice *dev;
int speedmask;
char path[16];
USBPortOps *ops;
void *opaque;
int index; /* internal port index, may be used with the opaque */
QTAILQ_ENTRY(USBPort) next;
};
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;
USBEndpoint *ep;
QEMUIOVector iov;
uint64_t parameter; /* control transfers */
int result; /* transfer length or USB_RET_* status code */
/* Internal use by the USB layer. */
USBPacketState state;
QTAILQ_ENTRY(USBPacket) queue;
};
void usb_packet_init(USBPacket *p);
void usb_packet_set_state(USBPacket *p, USBPacketState state);
void usb_packet_check_state(USBPacket *p, USBPacketState expected);
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, QEMUSGList *sgl);
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);
void usb_ep_init(USBDevice *dev);
void usb_ep_dump(USBDevice *dev);
struct USBEndpoint *usb_ep_get(USBDevice *dev, int pid, int ep);
uint8_t usb_ep_get_type(USBDevice *dev, int pid, int ep);
uint8_t usb_ep_get_ifnum(USBDevice *dev, int pid, int ep);
void usb_ep_set_type(USBDevice *dev, int pid, int ep, uint8_t type);
void usb_ep_set_ifnum(USBDevice *dev, int pid, int ep, uint8_t ifnum);
void usb_ep_set_max_packet_size(USBDevice *dev, int pid, int ep,
uint16_t raw);
int usb_ep_get_max_packet_size(USBDevice *dev, int pid, int ep);
void usb_ep_set_pipeline(USBDevice *dev, int pid, int ep, bool enabled);
void usb_attach(USBPort *port);
void usb_detach(USBPort *port);
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);
/* usb-linux.c */
USBDevice *usb_host_device_open(USBBus *bus, const char *devname);
int usb_host_device_close(const char *devname);
void usb_host_info(Monitor *mon);
/* usb-bt.c */
USBDevice *usb_bt_init(USBBus *bus, HCIInfo *hci);
/* usb ports of the VM */
#define VM_USB_HUB_SIZE 8
/* usb-musb.c */
enum musb_irq_source_e {
musb_irq_suspend = 0,
musb_irq_resume,
musb_irq_rst_babble,
musb_irq_sof,
musb_irq_connect,
musb_irq_disconnect,
musb_irq_vbus_request,
musb_irq_vbus_error,
musb_irq_rx,
musb_irq_tx,
musb_set_vbus,
musb_set_session,
/* Add new interrupts here */
musb_irq_max, /* total number of interrupts defined */
};
typedef struct MUSBState MUSBState;
MUSBState *musb_init(DeviceState *parent_device, int gpio_base);
void musb_reset(MUSBState *s);
uint32_t musb_core_intr_get(MUSBState *s);
void musb_core_intr_clear(MUSBState *s, uint32_t mask);
void musb_set_size(MUSBState *s, int epnum, int size, int is_tx);
/* usb-bus.c */
#define TYPE_USB_BUS "usb-bus"
#define USB_BUS(obj) OBJECT_CHECK(USBBus, (obj), TYPE_USB_BUS)
struct USBBus {
BusState qbus;
USBBusOps *ops;
int busnr;
int nfree;
int nused;
QTAILQ_HEAD(, USBPort) free;
QTAILQ_HEAD(, USBPort) used;
QTAILQ_ENTRY(USBBus) next;
};
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);
USBBus *usb_bus_find(int busnr);
void usb_legacy_register(const char *typename, const char *usbdevice_name,
USBDevice *(*usbdevice_init)(USBBus *bus,
const char *params));
USBDevice *usb_create(USBBus *bus, const char *name);
USBDevice *usb_create_simple(USBBus *bus, const char *name);
USBDevice *usbdevice_create(const char *cmdline);
void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index,
USBPortOps *ops, int speedmask);
int usb_register_companion(const char *masterbus, USBPort *ports[],
uint32_t portcount, uint32_t firstport,
void *opaque, USBPortOps *ops, int speedmask);
void usb_port_location(USBPort *downstream, USBPort *upstream, int portnr);
void usb_unregister_port(USBBus *bus, USBPort *port);
int usb_claim_port(USBDevice *dev);
void usb_release_port(USBDevice *dev);
int usb_device_attach(USBDevice *dev);
int usb_device_detach(USBDevice *dev);
int usb_device_delete_addr(int busnr, int addr);
static inline USBBus *usb_bus_from_device(USBDevice *d)
{
return DO_UPCAST(USBBus, qbus, d->qdev.parent_bus);
}
extern const VMStateDescription vmstate_usb_device;
#define VMSTATE_USB_DEVICE(_field, _state) { \
.name = (stringify(_field)), \
.size = sizeof(USBDevice), \
.vmsd = &vmstate_usb_device, \
.flags = VMS_STRUCT, \
.offset = vmstate_offset_value(_state, _field, USBDevice), \
}
USBDevice *usb_device_find_device(USBDevice *dev, uint8_t addr);
void usb_device_cancel_packet(USBDevice *dev, USBPacket *p);
void usb_device_handle_attach(USBDevice *dev);
void usb_device_handle_reset(USBDevice *dev);
int usb_device_handle_control(USBDevice *dev, USBPacket *p, int request, int value,
int index, int length, uint8_t *data);
int usb_device_handle_data(USBDevice *dev, USBPacket *p);
void usb_device_set_interface(USBDevice *dev, int interface,
int alt_old, int alt_new);
const char *usb_device_get_product_desc(USBDevice *dev);
const USBDesc *usb_device_get_usb_desc(USBDevice *dev);
#endif
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