1858789bf6
DDEKit URB's are no longer directly handled by HCD but rather translated and validated to avoid type conversion issues and illegal values.
392 lines
11 KiB
C
Executable file
392 lines
11 KiB
C
Executable file
/*
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* Implementation of DDEkit related calls/data
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*/
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#include <string.h> /* memset */
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#include <ddekit/usb.h>
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#include <usb/hcd_ddekit.h>
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#include <usb/hcd_interface.h>
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#include <usb/usb_common.h>
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/*===========================================================================*
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* Local declarations *
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*===========================================================================*/
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/*
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* In this file "struct ddekit_usb_dev" equals "hcd_device_state"
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* */
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struct ddekit_usb_device_id;
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struct ddekit_usb_urb;
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struct ddekit_usb_dev;
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/* Translates DDEKit UBR to one used by HCD */
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static void hcd_decode_urb(hcd_urb *, struct ddekit_usb_urb *);
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static void hcd_encode_urb(hcd_urb *, struct ddekit_usb_urb *);
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/*===========================================================================*
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* Global definitions *
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*===========================================================================*/
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ddekit_usb_completion_cb completion_cb = NULL;
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ddekit_usb_connect_cb connect_cb = NULL;
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ddekit_usb_disconnect_cb disconnect_cb = NULL;
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/*===========================================================================*
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* Implementation for usb_server.c *
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*===========================================================================*/
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/*===========================================================================*
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* _ddekit_usb_get_manufacturer *
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*===========================================================================*/
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char *
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_ddekit_usb_get_manufacturer(struct ddekit_usb_dev * ddev)
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{
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static const char mfg[] = "UNKNOWN";
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DEBUG_DUMP;
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/* TODO: UNUSED for argument won't work */
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((void)ddev);
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return (char *)mfg;
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}
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/*===========================================================================*
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* _ddekit_usb_get_product *
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*===========================================================================*/
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char *
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_ddekit_usb_get_product(struct ddekit_usb_dev * ddev)
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{
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static const char prod[] = "UNKNOWN";
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DEBUG_DUMP;
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/* TODO: UNUSED for argument won't work */
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((void)ddev);
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return (char *)prod;
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}
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/*===========================================================================*
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* _ddekit_usb_get_serial *
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*===========================================================================*/
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char *
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_ddekit_usb_get_serial(struct ddekit_usb_dev * ddev)
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{
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static const char serial[] = "UNKNOWN";
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DEBUG_DUMP;
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/* TODO: UNUSED for argument won't work */
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((void)ddev);
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return (char *)serial;
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}
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/*===========================================================================*
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* _ddekit_usb_get_device_desc *
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*===========================================================================*/
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struct usb_device_descriptor *
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_ddekit_usb_get_device_desc(struct ddekit_usb_dev * ddev)
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{
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hcd_device_state * dev;
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DEBUG_DUMP;
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dev = (hcd_device_state *)ddev;
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return (struct usb_device_descriptor *)
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(&(dev->config_tree.descriptor));
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}
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/*===========================================================================*
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* _ddekit_usb_get_interface_desc *
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*===========================================================================*/
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struct usb_interface_descriptor *
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_ddekit_usb_get_interface_desc(struct ddekit_usb_dev * ddev, int inum)
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{
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hcd_device_state * dev;
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DEBUG_DUMP;
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dev = (hcd_device_state *)ddev;
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return (struct usb_interface_descriptor *)
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(&(dev->config_tree.interface[inum].descriptor));
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}
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/*===========================================================================*
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* Implementation for <ddekit/usb.h> *
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*===========================================================================*/
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/*===========================================================================*
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* ddekit_usb_dev_set_data *
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*===========================================================================*/
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int
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ddekit_usb_dev_set_data(struct ddekit_usb_dev * dev, void * data)
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{
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hcd_device_state * hcd_dev;
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DEBUG_DUMP;
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hcd_dev = (hcd_device_state *)dev;
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hcd_dev->data = data;
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return EXIT_SUCCESS;
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}
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/*===========================================================================*
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* ddekit_usb_dev_get_data *
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*===========================================================================*/
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void *
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ddekit_usb_dev_get_data(struct ddekit_usb_dev * dev)
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{
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hcd_device_state * hcd_dev;
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DEBUG_DUMP;
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hcd_dev = (hcd_device_state *)dev;
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return hcd_dev->data;
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}
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/* TODO: This was in 'ddekit/usb.h' header file, but is not used anywhere */
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#if 0
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/*===========================================================================*
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* ddekit_usb_get_device_id *
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*===========================================================================*/
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void
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ddekit_usb_get_device_id(struct ddekit_usb_dev * dev,
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struct ddekit_usb_device_id * id)
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{
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DEBUG_DUMP;
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/* TODO: UNUSED for argument won't work */
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((void)dev);
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((void)id);
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return;
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}
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#endif
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/*===========================================================================*
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* ddekit_usb_submit_urb *
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*===========================================================================*/
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int
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ddekit_usb_submit_urb(struct ddekit_usb_urb * d_urb)
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{
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hcd_device_state * dev;
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hcd_driver_state * drv;
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DEBUG_DUMP;
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/* Retrieve info on device/driver state from DDEKit's USB */
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dev = (hcd_device_state *)(d_urb->dev);
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drv = (hcd_driver_state *)(dev->driver);
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/* Remember original URB */
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dev->urb.original_urb = (void *)d_urb;
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/* TODO: URB's should be queued somewhere if DDEKit is not changed */
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/* Turn DDEKit URB format to one that is easier to handle by HCD, also
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* check if URB is valid */
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hcd_decode_urb(&(dev->urb), d_urb);
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/* Start handling URB event */
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drv->current_event = HCD_EVENT_URB;
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hcd_handle_event(drv);
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return EXIT_SUCCESS;
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}
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/*===========================================================================*
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* ddekit_usb_cancle_urb *
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*===========================================================================*/
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int
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ddekit_usb_cancle_urb(struct ddekit_usb_urb * d_urb)
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{
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DEBUG_DUMP;
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/* TODO: UNUSED for argument won't work */
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((void)d_urb);
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return EXIT_SUCCESS;
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}
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/*===========================================================================*
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* ddekit_usb_init *
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*===========================================================================*/
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int
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ddekit_usb_init(struct ddekit_usb_driver * drv,
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ddekit_usb_malloc_fn * _m,
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ddekit_usb_free_fn * _f)
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{
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DEBUG_DUMP;
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completion_cb = drv->completion;
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connect_cb = drv->connect;
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disconnect_cb = drv->disconnect;
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*_m = malloc;
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*_f = free;
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return EXIT_SUCCESS;
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}
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/*===========================================================================*
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* hcd_connect_cb *
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*===========================================================================*/
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void
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hcd_connect_cb(hcd_device_state * dev)
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{
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unsigned int if_bitmask;
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DEBUG_DUMP;
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/* TODO: Magic numbers like in ddekit/devman */
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/* Each bit starting from 0, represents valid interface */
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if_bitmask = 0xFFFFFFFF >> (32 - dev->config_tree.num_interfaces);
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USB_DBG("Interfaces %d, mask %08X",
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dev->config_tree.num_interfaces,
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if_bitmask);
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connect_cb((struct ddekit_usb_dev *)dev, (int)if_bitmask);
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}
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/*===========================================================================*
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* hcd_disconnect_cb *
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*===========================================================================*/
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void
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hcd_disconnect_cb(hcd_device_state * dev)
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{
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DEBUG_DUMP;
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disconnect_cb((struct ddekit_usb_dev *)dev);
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}
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/*===========================================================================*
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* hcd_completion_cb *
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*===========================================================================*/
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void
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hcd_completion_cb(hcd_urb * urb)
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{
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struct ddekit_usb_urb * d_urb;
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DEBUG_DUMP;
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/* Recollect original URB */
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d_urb = (struct ddekit_usb_urb *)urb->original_urb;
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/* Turn HCD URB format to one handled by DDEKit */
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hcd_encode_urb(urb, d_urb);
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completion_cb(d_urb->priv);
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}
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/*===========================================================================*
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* hcd_decode_urb *
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*===========================================================================*/
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static void
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hcd_decode_urb(hcd_urb * urb, struct ddekit_usb_urb * dde_urb)
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{
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DEBUG_DUMP;
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/* No UBR error initially */
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urb->inout_status = EXIT_SUCCESS;
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/* Check transfer direction */
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switch (dde_urb->direction) {
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case DDEKIT_USB_IN:
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urb->direction = HCD_DIRECTION_IN;
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break;
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case DDEKIT_USB_OUT:
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urb->direction = HCD_DIRECTION_OUT;
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break;
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default:
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USB_MSG("URB direction error");
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goto URB_ERROR;
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}
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/* Check transfer type */
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switch (dde_urb->type) {
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case DDEKIT_USB_TRANSFER_ISO:
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urb->type = HCD_TRANSFER_ISOCHRONOUS;
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break;
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case DDEKIT_USB_TRANSFER_INT:
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urb->type = HCD_TRANSFER_INTERRUPT;
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break;
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case DDEKIT_USB_TRANSFER_CTL:
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urb->type = HCD_TRANSFER_CONTROL;
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break;
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case DDEKIT_USB_TRANSFER_BLK:
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urb->type = HCD_TRANSFER_BULK;
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break;
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default:
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USB_MSG("URB type error");
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goto URB_ERROR;
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}
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/* Check transfer endpoint validity */
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if ((dde_urb->endpoint <= (int)HCD_LAST_EP) &&
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(dde_urb->endpoint >= (int)HCD_DEFAULT_EP))
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urb->endpoint = (hcd_reg1)dde_urb->endpoint;
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else {
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USB_MSG("URB endpoint error");
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goto URB_ERROR;
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}
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/* Check transfer interval validity */
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if ((dde_urb->interval <= (int)HCD_HIGHEST_INTERVAL) &&
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(dde_urb->interval >= (int)HCD_LOWEST_INTERVAL))
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urb->interval = (hcd_reg1)dde_urb->interval;
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else {
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USB_MSG("URB interval error");
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goto URB_ERROR;
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}
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/* TODO: Alignment of setup packet. Can DDE client guarantee that? */
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/* Transfer data assignment */
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urb->inout_data = (void *)dde_urb->data;
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urb->in_setup = (hcd_ctrlrequest *)dde_urb->setup_packet;
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/* TODO: Sane size check? */
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urb->in_size = (hcd_reg4)dde_urb->size;
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/* Buffer validity check */
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if ((NULL == urb->inout_data) && (NULL == urb->in_setup)) {
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USB_MSG("URB buffer error");
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goto URB_ERROR;
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}
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/* Remember device and check for NULL */
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if (NULL == (urb->target_device = (hcd_device_state *)dde_urb->dev)) {
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USB_MSG("URB device pointer error");
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goto URB_ERROR;
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}
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/* Decoding completed */
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return;
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URB_ERROR:
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urb->inout_status = EXIT_FAILURE;
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}
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/*===========================================================================*
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* hcd_encode_urb *
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*===========================================================================*/
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static void
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hcd_encode_urb(hcd_urb * urb, struct ddekit_usb_urb * dde_urb)
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{
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DEBUG_DUMP;
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/* Rewrite output for DDEKit part */
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dde_urb->actual_length = urb->out_size;
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dde_urb->status = urb->inout_status;
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}
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