* modification, are permitted provided that the following conditions
* are met:
*
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- * * Neither the name of the FH Augsburg nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ * * Neither the name of the FH Augsburg nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
*/
void usb_init()
{
- core.drivers = list_create();
- core.devices = list_create();
- core.nextaddress = 1;
- hcdi_init();
+ core.drivers = list_create();
+ core.devices = list_create();
+ core.nextaddress = 1;
+ hcdi_init();
}
/**
*/
u8 usb_next_address()
{
- u8 addr = core.nextaddress;
- core.nextaddress++;
- return addr;
+ u8 addr = core.nextaddress;
+ core.nextaddress++;
+ return addr;
}
*/
void usb_periodic()
{
- // call ever registered driver
- usb_driver *drv;
- element *iterator = core.drivers->head;
- while (iterator != NULL) {
- drv = (usb_driver *) iterator->data;
- drv->check();
- iterator = iterator->next;
- }
+ // call ever registered driver
+ usb_driver *drv;
+ element *iterator = core.drivers->head;
+ while (iterator != NULL) {
+ drv = (usb_driver *) iterator->data;
+ drv->check();
+ iterator = iterator->next;
+ }
}
*/
usb_device *usb_add_device()
{
- usb_device *dev = (usb_device *) malloc(sizeof(usb_device));
- dev->address = 0;
- dev->bMaxPacketSize0 = 8; /* send at first time only 8 bytes */
-
- dev->epSize[0] = 64;
- dev->epSize[1] = 64;
- dev->epSize[2] = 64;
-
- dev->epTogl[0] = 0;
- dev->epTogl[1] = 0;
- dev->epTogl[2] = 0;
-
- char buf[64];
- u8 devdescr_size;
- u8 address = usb_next_address();
-
- /* ask first 8 bytes of device descriptor with this special
- * GET Descriptor Request, when device address = 0
- */
- usb_control_msg(dev, 0x80, GET_DESCRIPTOR, 1, 0, 64, buf, 8, 0);
-
- dev->bMaxPacketSize0 = (u8) buf[7] ? (u8) buf[7] : 1; //dirty? /* setup real ep0 fifo size */
- devdescr_size = (u8) buf[0]; /* save real length of device descriptor */
-
- /* define new adress */
- usb_control_msg(dev, 0x00, SET_ADDRESS, address << 8, 0, 0, buf, 8, 0);
- dev->address = address;
-
- /* get complete device descriptor */
- usb_control_msg(dev, 0x80, GET_DESCRIPTOR, 1, 0, devdescr_size, buf, 8,
- 0);
-
- /* save only really neccessary values for this small usbstack */
- dev->bDeviceClass = (u8) buf[4];
- dev->bDeviceSubClass = (u8) buf[5];
- dev->bDeviceProtocoll = (u8) buf[6];
- dev->idVendor = (u16) (buf[9] << 8) | (buf[8]);
- dev->idProduct = (u16) (buf[11] << 8) | (buf[10]);
- dev->bcdDevice = (u16) (buf[13] << 8) | (buf[12]);
+ usb_device *dev = (usb_device *) malloc(sizeof(usb_device));
+ dev->address = 0;
+ dev->bMaxPacketSize0 = 8; /* send at first time only 8 bytes */
+
+ dev->epSize[0] = 64;
+ dev->epSize[1] = 64;
+ dev->epSize[2] = 64;
+
+ dev->epTogl[0] = 0;
+ dev->epTogl[1] = 0;
+ dev->epTogl[2] = 0;
+
+ char buf[64];
+ u8 devdescr_size;
+ u8 address = usb_next_address();
+
+ /* ask first 8 bytes of device descriptor with this special
+ * GET Descriptor Request, when device address = 0
+ */
+ usb_control_msg(dev, 0x80, GET_DESCRIPTOR, 1, 0, 64, buf, 8, 0);
+
+ dev->bMaxPacketSize0 = (u8) buf[7] ? (u8) buf[7] : 1; //dirty? /* setup real ep0 fifo size */
+ devdescr_size = (u8) buf[0]; /* save real length of device descriptor */
+
+ /* define new adress */
+ usb_control_msg(dev, 0x00, SET_ADDRESS, address << 8, 0, 0, buf, 8, 0);
+ dev->address = address;
+
+ /* get complete device descriptor */
+ usb_control_msg(dev, 0x80, GET_DESCRIPTOR, 1, 0, devdescr_size, buf, 8,
+ 0);
+
+ /* save only really neccessary values for this small usbstack */
+ dev->bDeviceClass = (u8) buf[4];
+ dev->bDeviceSubClass = (u8) buf[5];
+ dev->bDeviceProtocoll = (u8) buf[6];
+ dev->idVendor = (u16) (buf[9] << 8) | (buf[8]);
+ dev->idProduct = (u16) (buf[11] << 8) | (buf[10]);
+ dev->bcdDevice = (u16) (buf[13] << 8) | (buf[12]);
printf( "bDeviceClass 0x%02X\n"
"bDeviceSubClass 0x%02X\n"
dev->bDeviceSubClass, dev->bDeviceProtocoll,
dev->idVendor, dev->idProduct, dev->bcdDevice);
/* for lewurms keyboard it should be:
- * bDeviceClass 0
- * bDeviceSubClass 0
- * bDeviceClass 0
- * idVendor 0x049f
- * idProduct 0x000e
- * bcdDevice 1.00
+ * bDeviceClass 0
+ * bDeviceSubClass 0
+ * bDeviceClass 0
+ * idVendor 0x049f
+ * idProduct 0x000e
+ * bcdDevice 1.00
*/
- // string descriptoren werden nicht im arbeitsspeicher gehalten -> on demand mit
- // entprechenden funktionen
- // hier muss man noch mehr abholen, konfigurationene, interfaces und endpunkte
+ // string descriptoren werden nicht im arbeitsspeicher gehalten -> on demand mit
+ // entprechenden funktionen
+ // hier muss man noch mehr abholen, konfigurationene, interfaces und endpunkte
- /* add device to device list */
- element *tmp = (element *) malloc(sizeof(element));
- tmp->data = (void *) dev;
- list_add_tail(core.devices, tmp);
+ /* add device to device list */
+ element *tmp = (element *) malloc(sizeof(element));
+ tmp->data = (void *) dev;
+ list_add_tail(core.devices, tmp);
- usb_probe_driver();
+ usb_probe_driver();
- return dev;
+ return dev;
}
/**
*/
u8 usb_remove_device(usb_device * dev)
{
- // FIXME!!!! dieser quatsch ist nur temporaer
- free(core.devices->head);
- free(core.devices);
- core.devices = list_create();
- return 1;
+ // FIXME!!!! dieser quatsch ist nur temporaer
+ free(core.devices->head);
+ free(core.devices);
+ core.devices = list_create();
+ return 1;
}
/**
*/
u8 usb_register_driver(usb_driver * dev)
{
- /* add driver to driver list */
- element *tmp = (element *) malloc(sizeof(element));
- tmp->data = (void *) dev;
- tmp->next = NULL;
- list_add_tail(core.drivers, tmp);
+ /* add driver to driver list */
+ element *tmp = (element *) malloc(sizeof(element));
+ tmp->data = (void *) dev;
+ tmp->next = NULL;
+ list_add_tail(core.drivers, tmp);
- /**
- * first check to find a suitable device
- * (root hub drivers need this call here)
- */
- dev->probe();
+ /**
+ * first check to find a suitable device
+ * (root hub drivers need this call here)
+ */
+ dev->probe();
- return 1;
+ return 1;
}
/**
* Call every probe function from every registered
* driver, to check if there is a valid driver
- * for the new device.
+ * for the new device.
*/
void usb_probe_driver()
{
- // call ever registered driver
- usb_driver *drv;
- element *iterator = core.drivers->head;
- while (iterator != NULL) {
- drv = (usb_driver *) iterator->data;
- drv->probe();
- iterator = iterator->next;
- }
+ // call ever registered driver
+ usb_driver *drv;
+ element *iterator = core.drivers->head;
+ while (iterator != NULL) {
+ drv = (usb_driver *) iterator->data;
+ drv->probe();
+ iterator = iterator->next;
+ }
}
/**
*/
usb_irp *usb_get_irp()
{
- return 0;
+ return 0;
}
/**
u8 usb_remove_irp(usb_irp * irp)
{
- return 1;
+ return 1;
}
/**
*/
u16 usb_submit_irp(usb_irp *irp)
{
- usb_transfer_descriptor *td;
- u8 runloop = 1;
- u16 restlength = irp->len;
- char *td_buf_ptr = irp->buffer;
-
- //u8 togl=irp->dev->epTogl[(irp->endpoint & 0x7F)];
- u8 togl = irp->dev->epTogl[(irp->endpoint & 0x7F)];
- //u8 togl=0;
-
- switch (irp->type) {
- case USB_CTRL:
-
- /* alle requests mit dem gleichen algorithmus zerteilen
- * das einzige ist der spezielle get_Device_descriptor request
- * bei dem eine laenge von 64 angegeben ist.
- * wenn man an adresse 0 einen get_device_desciptor schickt
- * dann reichen die ersten 8 byte.
- */
-
- /***************** Setup Stage ***********************/
- td = usb_create_transfer_descriptor(irp);
- td->pid = USB_PID_SETUP;
- td->buffer = irp->buffer;
- td->actlen = 8; /* control message are always 8 bytes */
-
- togl = 0;
- td->togl = togl; /* start with data0 */
- if (togl == 0)
- togl = 1;
- else
- togl = 0;
- /**** send token ****/
- hcdi_enqueue(td);
-
- /***************** Data Stage ***********************/
- /**
- * You can see at bit 7 of bmRequestType if this stage is used,
- * default requests are always 8 byte greate, from
- * host to device. Stage 3 is only neccessary if the request
- * expected datas from the device.
- * bit7 - 1 = from device to host -> yes we need data stage
- * bit7 - 0 = from host to device -> no send zero packet
- *
- * nach einem setup token kann nur ein IN token in stage 3 folgen
- * nie aber ein OUT. Ein Zero OUT wird nur als Bestaetigung benoetigt.
- *
- *
- * bit7 = 1
- * Device to Host
- * - es kommen noch Daten mit PID_IN an
- * - host beendet mit PID_OUT DATA1 Zero
- * bit7 - 0
- * Host zu Device (wie set address)
- * - device sendet ein PID_IN DATA1 Zero Packet als bestaetigung
- */
- usb_device_request *setup = (usb_device_request *) irp->buffer;
- u8 bmRequestType = setup->bmRequestType;
-
- if (bmRequestType & 0x80) { /* check bit 7 of bmRequestType */
-
- /* schleife die die tds generiert */
- while (runloop) {
- td = usb_create_transfer_descriptor(irp);
- td->actlen = irp->epsize;
- /* stop loop if all bytes are send */
- if (restlength <= irp->epsize) {
- runloop = 0;
- td->actlen = restlength;
- }
-
- td->buffer = td_buf_ptr;
- /* move pointer for next packet */
- td_buf_ptr = td_buf_ptr + irp->epsize;
-
- td->pid = USB_PID_IN;
- td->togl = togl;
- if (togl == 0)
- togl = 1;
- else
- togl = 0;
-
- /* wenn device descriptor von adresse 0 angefragt wird werden nur
- * die ersten 8 byte abgefragt
- */
- if (setup->bRequest == GET_DESCRIPTOR && (setup->wValue >> 8) == 1
- && td->devaddress == 0) {
- runloop = 0; /* stop loop */
- }
-
- /**** send token ****/
- hcdi_enqueue(td);
-
- /* pruefe ob noch weitere Pakete vom Device abgeholt werden muessen */
- restlength = restlength - irp->epsize;
- }
- }
-
-
- /***************** Status Stage ***********************/
- /* Zero packet for end */
- td = usb_create_transfer_descriptor(irp);
- td->togl = 1; /* zero data packet = always DATA1 packet */
- td->actlen = 0;
- td->buffer = NULL;
-
- /**
- * bit7 = 1, host beendet mit PID_OUT DATA1 Zero
- * bit7 = 0, device sendet ein PID_IN DATA1 Zero Packet als bestaetigung
- */
- if (bmRequestType & 0x80) { /* check bit 7 of bmRequestType */
- td->pid = USB_PID_OUT;
- } else {
- td->pid = USB_PID_IN;
- }
- /**** send token ****/
- hcdi_enqueue(td);
- free(td);
-
-
- break;
- case USB_BULK:
-
- core.stdout("bulk\r\n");
- //u8 runloop=1;
- //u16 restlength = irp->len;
- //char * td_buf_ptr=irp->buffer;
-
- /* schleife die die tds generiert */
- while (runloop) {
-
- td = usb_create_transfer_descriptor(irp);
- td->endpoint = td->endpoint & 0x7F; /* clear direction bit */
-
- /* max packet size for given endpoint */
- td->actlen = irp->epsize;
-
- /* Generate In Packet */
- if (irp->endpoint & 0x80)
- td->pid = USB_PID_IN;
- else
- /* Generate Out Packet */
- td->pid = USB_PID_OUT;
-
- /* stop loop if all bytes are send */
- if (restlength <= irp->epsize) {
- runloop = 0;
- td->actlen = restlength;
- }
-
- td->buffer = td_buf_ptr;
- /* move pointer for next packet */
- td_buf_ptr = td_buf_ptr + irp->epsize;
-
- td->togl = togl;
- if (togl == 0)
- togl = 1;
- else
- togl = 0;
- /**** send token ****/
- hcdi_enqueue(td);
- free(td);
- }
- /* next togl */
- //if(td->pid == USB_PID_OUT) {
- //if(togl==0) togl=1; else togl=0;
- //}
- irp->dev->epTogl[(irp->endpoint & 0x7F)] = togl;
-
- break;
- }
-
- return 1;
+ usb_transfer_descriptor *td;
+ u8 runloop = 1;
+ u16 restlength = irp->len;
+ char *td_buf_ptr = irp->buffer;
+
+ //u8 togl=irp->dev->epTogl[(irp->endpoint & 0x7F)];
+ u8 togl = irp->dev->epTogl[(irp->endpoint & 0x7F)];
+ //u8 togl=0;
+
+ switch (irp->type) {
+ case USB_CTRL:
+
+ /* alle requests mit dem gleichen algorithmus zerteilen
+ * das einzige ist der spezielle get_Device_descriptor request
+ * bei dem eine laenge von 64 angegeben ist.
+ * wenn man an adresse 0 einen get_device_desciptor schickt
+ * dann reichen die ersten 8 byte.
+ */
+
+ /***************** Setup Stage ***********************/
+ td = usb_create_transfer_descriptor(irp);
+ td->pid = USB_PID_SETUP;
+ td->buffer = irp->buffer;
+ td->actlen = 8; /* control message are always 8 bytes */
+
+ togl = 0;
+ td->togl = togl; /* start with data0 */
+ if (togl == 0)
+ togl = 1;
+ else
+ togl = 0;
+ /**** send token ****/
+ hcdi_enqueue(td);
+
+ /***************** Data Stage ***********************/
+ /**
+ * You can see at bit 7 of bmRequestType if this stage is used,
+ * default requests are always 8 byte greate, from
+ * host to device. Stage 3 is only neccessary if the request
+ * expected datas from the device.
+ * bit7 - 1 = from device to host -> yes we need data stage
+ * bit7 - 0 = from host to device -> no send zero packet
+ *
+ * nach einem setup token kann nur ein IN token in stage 3 folgen
+ * nie aber ein OUT. Ein Zero OUT wird nur als Bestaetigung benoetigt.
+ *
+ *
+ * bit7 = 1
+ * Device to Host
+ * - es kommen noch Daten mit PID_IN an
+ * - host beendet mit PID_OUT DATA1 Zero
+ * bit7 - 0
+ * Host zu Device (wie set address)
+ * - device sendet ein PID_IN DATA1 Zero Packet als bestaetigung
+ */
+ usb_device_request *setup = (usb_device_request *) irp->buffer;
+ u8 bmRequestType = setup->bmRequestType;
+
+ if (bmRequestType & 0x80) { /* check bit 7 of bmRequestType */
+
+ /* schleife die die tds generiert */
+ while (runloop) {
+ td = usb_create_transfer_descriptor(irp);
+ td->actlen = irp->epsize;
+ /* stop loop if all bytes are send */
+ if (restlength <= irp->epsize) {
+ runloop = 0;
+ td->actlen = restlength;
+ }
+
+ td->buffer = td_buf_ptr;
+ /* move pointer for next packet */
+ td_buf_ptr = td_buf_ptr + irp->epsize;
+
+ td->pid = USB_PID_IN;
+ td->togl = togl;
+ if (togl == 0)
+ togl = 1;
+ else
+ togl = 0;
+
+ /* wenn device descriptor von adresse 0 angefragt wird werden nur
+ * die ersten 8 byte abgefragt
+ */
+ if (setup->bRequest == GET_DESCRIPTOR && (setup->wValue >> 8) == 1
+ && td->devaddress == 0) {
+ runloop = 0; /* stop loop */
+ }
+
+ /**** send token ****/
+ hcdi_enqueue(td);
+
+ /* pruefe ob noch weitere Pakete vom Device abgeholt werden muessen */
+ restlength = restlength - irp->epsize;
+ }
+ }
+
+
+ /***************** Status Stage ***********************/
+ /* Zero packet for end */
+ td = usb_create_transfer_descriptor(irp);
+ td->togl = 1; /* zero data packet = always DATA1 packet */
+ td->actlen = 0;
+ td->buffer = NULL;
+
+ /**
+ * bit7 = 1, host beendet mit PID_OUT DATA1 Zero
+ * bit7 = 0, device sendet ein PID_IN DATA1 Zero Packet als bestaetigung
+ */
+ if (bmRequestType & 0x80) { /* check bit 7 of bmRequestType */
+ td->pid = USB_PID_OUT;
+ } else {
+ td->pid = USB_PID_IN;
+ }
+ /**** send token ****/
+ hcdi_enqueue(td);
+ free(td);
+
+
+ break;
+ case USB_BULK:
+
+ core.stdout("bulk\r\n");
+ //u8 runloop=1;
+ //u16 restlength = irp->len;
+ //char * td_buf_ptr=irp->buffer;
+
+ /* schleife die die tds generiert */
+ while (runloop) {
+
+ td = usb_create_transfer_descriptor(irp);
+ td->endpoint = td->endpoint & 0x7F; /* clear direction bit */
+
+ /* max packet size for given endpoint */
+ td->actlen = irp->epsize;
+
+ /* Generate In Packet */
+ if (irp->endpoint & 0x80)
+ td->pid = USB_PID_IN;
+ else
+ /* Generate Out Packet */
+ td->pid = USB_PID_OUT;
+
+ /* stop loop if all bytes are send */
+ if (restlength <= irp->epsize) {
+ runloop = 0;
+ td->actlen = restlength;
+ }
+
+ td->buffer = td_buf_ptr;
+ /* move pointer for next packet */
+ td_buf_ptr = td_buf_ptr + irp->epsize;
+
+ td->togl = togl;
+ if (togl == 0)
+ togl = 1;
+ else
+ togl = 0;
+ /**** send token ****/
+ hcdi_enqueue(td);
+ free(td);
+ }
+ /* next togl */
+ //if(td->pid == USB_PID_OUT) {
+ //if(togl==0) togl=1; else togl=0;
+ //}
+ irp->dev->epTogl[(irp->endpoint & 0x7F)] = togl;
+
+ break;
+ }
+
+ return 1;
}
*/
usb_transfer_descriptor *usb_create_transfer_descriptor(usb_irp * irp)
{
- usb_transfer_descriptor *td =
- (usb_transfer_descriptor *) malloc(sizeof(usb_transfer_descriptor));
+ usb_transfer_descriptor *td =
+ (usb_transfer_descriptor *) malloc(sizeof(usb_transfer_descriptor));
- td->devaddress = irp->dev->address;
- td->endpoint = irp->endpoint;
- td->iso = 0;
- td->state = USB_TRANSFER_DESCR_NONE;
+ td->devaddress = irp->dev->address;
+ td->endpoint = irp->endpoint;
+ td->iso = 0;
+ td->state = USB_TRANSFER_DESCR_NONE;
- return td;
+ return td;
}
projects / ppcskel.git / blobdiff