upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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1009 lines
26 KiB
1009 lines
26 KiB
/*
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* (C) Copyright 2003
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* Gerry Hamel, geh@ti.com, Texas Instruments
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*
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* (C) Copyright 2006
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* Bryan O'Donoghue, bodonoghue@codehermit.ie
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <common.h>
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#include <config.h>
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#include <circbuf.h>
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#include <stdio_dev.h>
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#include "usbtty.h"
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#include "usb_cdc_acm.h"
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#include "usbdescriptors.h"
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#ifdef DEBUG
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#define TTYDBG(fmt,args...)\
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serial_printf("[%s] %s %d: "fmt, __FILE__,__FUNCTION__,__LINE__,##args)
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#else
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#define TTYDBG(fmt,args...) do{}while(0)
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#endif
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#if 1
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#define TTYERR(fmt,args...)\
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serial_printf("ERROR![%s] %s %d: "fmt, __FILE__,__FUNCTION__,\
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__LINE__,##args)
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#else
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#define TTYERR(fmt,args...) do{}while(0)
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#endif
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/*
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* Defines
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*/
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#define NUM_CONFIGS 1
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#define MAX_INTERFACES 2
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#define NUM_ENDPOINTS 3
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#define ACM_TX_ENDPOINT 3
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#define ACM_RX_ENDPOINT 2
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#define GSERIAL_TX_ENDPOINT 2
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#define GSERIAL_RX_ENDPOINT 1
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#define NUM_ACM_INTERFACES 2
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#define NUM_GSERIAL_INTERFACES 1
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#define CONFIG_USBD_DATA_INTERFACE_STR "Bulk Data Interface"
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#define CONFIG_USBD_CTRL_INTERFACE_STR "Control Interface"
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/*
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* Buffers to hold input and output data
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*/
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#define USBTTY_BUFFER_SIZE 256
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static circbuf_t usbtty_input;
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static circbuf_t usbtty_output;
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/*
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* Instance variables
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*/
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static struct stdio_dev usbttydev;
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static struct usb_device_instance device_instance[1];
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static struct usb_bus_instance bus_instance[1];
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static struct usb_configuration_instance config_instance[NUM_CONFIGS];
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static struct usb_interface_instance interface_instance[MAX_INTERFACES];
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static struct usb_alternate_instance alternate_instance[MAX_INTERFACES];
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/* one extra for control endpoint */
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static struct usb_endpoint_instance endpoint_instance[NUM_ENDPOINTS+1];
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/*
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* Global flag
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*/
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int usbtty_configured_flag = 0;
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/*
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* Serial number
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*/
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static char serial_number[16];
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/*
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* Descriptors, Strings, Local variables.
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*/
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/* defined and used by gadget/ep0.c */
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extern struct usb_string_descriptor **usb_strings;
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/* Indicies, References */
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static unsigned short rx_endpoint = 0;
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static unsigned short tx_endpoint = 0;
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static unsigned short interface_count = 0;
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static struct usb_string_descriptor *usbtty_string_table[STR_COUNT];
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/* USB Descriptor Strings */
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static u8 wstrLang[4] = {4,USB_DT_STRING,0x9,0x4};
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static u8 wstrManufacturer[2 + 2*(sizeof(CONFIG_USBD_MANUFACTURER)-1)];
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static u8 wstrProduct[2 + 2*(sizeof(CONFIG_USBD_PRODUCT_NAME)-1)];
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static u8 wstrSerial[2 + 2*(sizeof(serial_number) - 1)];
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static u8 wstrConfiguration[2 + 2*(sizeof(CONFIG_USBD_CONFIGURATION_STR)-1)];
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static u8 wstrDataInterface[2 + 2*(sizeof(CONFIG_USBD_DATA_INTERFACE_STR)-1)];
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static u8 wstrCtrlInterface[2 + 2*(sizeof(CONFIG_USBD_DATA_INTERFACE_STR)-1)];
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/* Standard USB Data Structures */
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static struct usb_interface_descriptor interface_descriptors[MAX_INTERFACES];
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static struct usb_endpoint_descriptor *ep_descriptor_ptrs[NUM_ENDPOINTS];
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static struct usb_configuration_descriptor *configuration_descriptor = 0;
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static struct usb_device_descriptor device_descriptor = {
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.bLength = sizeof(struct usb_device_descriptor),
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.bDescriptorType = USB_DT_DEVICE,
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.bcdUSB = cpu_to_le16(USB_BCD_VERSION),
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.bDeviceSubClass = 0x00,
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.bDeviceProtocol = 0x00,
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.bMaxPacketSize0 = EP0_MAX_PACKET_SIZE,
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.idVendor = cpu_to_le16(CONFIG_USBD_VENDORID),
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.bcdDevice = cpu_to_le16(USBTTY_BCD_DEVICE),
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.iManufacturer = STR_MANUFACTURER,
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.iProduct = STR_PRODUCT,
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.iSerialNumber = STR_SERIAL,
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.bNumConfigurations = NUM_CONFIGS
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};
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/*
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* Static CDC ACM specific descriptors
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*/
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struct acm_config_desc {
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struct usb_configuration_descriptor configuration_desc;
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/* Master Interface */
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struct usb_interface_descriptor interface_desc;
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struct usb_class_header_function_descriptor usb_class_header;
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struct usb_class_call_management_descriptor usb_class_call_mgt;
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struct usb_class_abstract_control_descriptor usb_class_acm;
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struct usb_class_union_function_descriptor usb_class_union;
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struct usb_endpoint_descriptor notification_endpoint;
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/* Slave Interface */
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struct usb_interface_descriptor data_class_interface;
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struct usb_endpoint_descriptor data_endpoints[NUM_ENDPOINTS-1];
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} __attribute__((packed));
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static struct acm_config_desc acm_configuration_descriptors[NUM_CONFIGS] = {
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{
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.configuration_desc ={
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.bLength =
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sizeof(struct usb_configuration_descriptor),
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.bDescriptorType = USB_DT_CONFIG,
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.wTotalLength =
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cpu_to_le16(sizeof(struct acm_config_desc)),
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.bNumInterfaces = NUM_ACM_INTERFACES,
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.bConfigurationValue = 1,
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.iConfiguration = STR_CONFIG,
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.bmAttributes =
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BMATTRIBUTE_SELF_POWERED|BMATTRIBUTE_RESERVED,
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.bMaxPower = USBTTY_MAXPOWER
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},
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/* Interface 1 */
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.interface_desc = {
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.bLength = sizeof(struct usb_interface_descriptor),
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.bDescriptorType = USB_DT_INTERFACE,
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.bInterfaceNumber = 0,
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.bAlternateSetting = 0,
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.bNumEndpoints = 0x01,
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.bInterfaceClass =
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COMMUNICATIONS_INTERFACE_CLASS_CONTROL,
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.bInterfaceSubClass = COMMUNICATIONS_ACM_SUBCLASS,
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.bInterfaceProtocol = COMMUNICATIONS_V25TER_PROTOCOL,
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.iInterface = STR_CTRL_INTERFACE,
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},
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.usb_class_header = {
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.bFunctionLength =
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sizeof(struct usb_class_header_function_descriptor),
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.bDescriptorType = CS_INTERFACE,
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.bDescriptorSubtype = USB_ST_HEADER,
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.bcdCDC = cpu_to_le16(110),
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},
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.usb_class_call_mgt = {
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.bFunctionLength =
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sizeof(struct usb_class_call_management_descriptor),
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.bDescriptorType = CS_INTERFACE,
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.bDescriptorSubtype = USB_ST_CMF,
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.bmCapabilities = 0x00,
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.bDataInterface = 0x01,
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},
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.usb_class_acm = {
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.bFunctionLength =
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sizeof(struct usb_class_abstract_control_descriptor),
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.bDescriptorType = CS_INTERFACE,
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.bDescriptorSubtype = USB_ST_ACMF,
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.bmCapabilities = 0x00,
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},
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.usb_class_union = {
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.bFunctionLength =
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sizeof(struct usb_class_union_function_descriptor),
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.bDescriptorType = CS_INTERFACE,
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.bDescriptorSubtype = USB_ST_UF,
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.bMasterInterface = 0x00,
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.bSlaveInterface0 = 0x01,
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},
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.notification_endpoint = {
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.bLength =
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sizeof(struct usb_endpoint_descriptor),
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = UDC_INT_ENDPOINT | USB_DIR_IN,
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.bmAttributes = USB_ENDPOINT_XFER_INT,
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.wMaxPacketSize
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= cpu_to_le16(CONFIG_USBD_SERIAL_INT_PKTSIZE),
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.bInterval = 0xFF,
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},
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/* Interface 2 */
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.data_class_interface = {
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.bLength =
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sizeof(struct usb_interface_descriptor),
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.bDescriptorType = USB_DT_INTERFACE,
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.bInterfaceNumber = 0x01,
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.bAlternateSetting = 0x00,
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.bNumEndpoints = 0x02,
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.bInterfaceClass =
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COMMUNICATIONS_INTERFACE_CLASS_DATA,
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.bInterfaceSubClass = DATA_INTERFACE_SUBCLASS_NONE,
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.bInterfaceProtocol = DATA_INTERFACE_PROTOCOL_NONE,
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.iInterface = STR_DATA_INTERFACE,
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},
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.data_endpoints = {
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{
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.bLength =
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sizeof(struct usb_endpoint_descriptor),
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = UDC_OUT_ENDPOINT | USB_DIR_OUT,
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.bmAttributes =
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USB_ENDPOINT_XFER_BULK,
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.wMaxPacketSize =
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cpu_to_le16(CONFIG_USBD_SERIAL_BULK_PKTSIZE),
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.bInterval = 0xFF,
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},
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{
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.bLength =
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sizeof(struct usb_endpoint_descriptor),
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = UDC_IN_ENDPOINT | USB_DIR_IN,
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.bmAttributes =
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USB_ENDPOINT_XFER_BULK,
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.wMaxPacketSize =
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cpu_to_le16(CONFIG_USBD_SERIAL_BULK_PKTSIZE),
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.bInterval = 0xFF,
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},
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},
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},
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};
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static struct rs232_emu rs232_desc={
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.dter = 115200,
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.stop_bits = 0x00,
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.parity = 0x00,
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.data_bits = 0x08
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};
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/*
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* Static Generic Serial specific data
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*/
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struct gserial_config_desc {
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struct usb_configuration_descriptor configuration_desc;
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struct usb_interface_descriptor interface_desc[NUM_GSERIAL_INTERFACES];
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struct usb_endpoint_descriptor data_endpoints[NUM_ENDPOINTS];
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} __attribute__((packed));
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static struct gserial_config_desc
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gserial_configuration_descriptors[NUM_CONFIGS] ={
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{
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.configuration_desc ={
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.bLength = sizeof(struct usb_configuration_descriptor),
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.bDescriptorType = USB_DT_CONFIG,
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.wTotalLength =
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cpu_to_le16(sizeof(struct gserial_config_desc)),
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.bNumInterfaces = NUM_GSERIAL_INTERFACES,
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.bConfigurationValue = 1,
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.iConfiguration = STR_CONFIG,
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.bmAttributes =
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BMATTRIBUTE_SELF_POWERED|BMATTRIBUTE_RESERVED,
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.bMaxPower = USBTTY_MAXPOWER
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},
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.interface_desc = {
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{
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.bLength =
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sizeof(struct usb_interface_descriptor),
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.bDescriptorType = USB_DT_INTERFACE,
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.bInterfaceNumber = 0,
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.bAlternateSetting = 0,
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.bNumEndpoints = NUM_ENDPOINTS,
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.bInterfaceClass =
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COMMUNICATIONS_INTERFACE_CLASS_VENDOR,
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.bInterfaceSubClass =
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COMMUNICATIONS_NO_SUBCLASS,
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.bInterfaceProtocol =
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COMMUNICATIONS_NO_PROTOCOL,
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.iInterface = STR_DATA_INTERFACE
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},
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},
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.data_endpoints = {
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{
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.bLength =
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sizeof(struct usb_endpoint_descriptor),
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = UDC_OUT_ENDPOINT | USB_DIR_OUT,
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.bmAttributes = USB_ENDPOINT_XFER_BULK,
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.wMaxPacketSize =
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cpu_to_le16(CONFIG_USBD_SERIAL_OUT_PKTSIZE),
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.bInterval= 0xFF,
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},
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{
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.bLength =
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sizeof(struct usb_endpoint_descriptor),
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = UDC_IN_ENDPOINT | USB_DIR_IN,
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.bmAttributes = USB_ENDPOINT_XFER_BULK,
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.wMaxPacketSize =
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cpu_to_le16(CONFIG_USBD_SERIAL_IN_PKTSIZE),
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.bInterval = 0xFF,
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},
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{
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.bLength =
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sizeof(struct usb_endpoint_descriptor),
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = UDC_INT_ENDPOINT | USB_DIR_IN,
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.bmAttributes = USB_ENDPOINT_XFER_INT,
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.wMaxPacketSize =
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cpu_to_le16(CONFIG_USBD_SERIAL_INT_PKTSIZE),
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.bInterval = 0xFF,
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},
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},
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},
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};
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|
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/*
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* Static Function Prototypes
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*/
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static void usbtty_init_strings (void);
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static void usbtty_init_instances (void);
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static void usbtty_init_endpoints (void);
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static void usbtty_init_terminal_type(short type);
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static void usbtty_event_handler (struct usb_device_instance *device,
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usb_device_event_t event, int data);
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static int usbtty_cdc_setup(struct usb_device_request *request,
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struct urb *urb);
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static int usbtty_configured (void);
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static int write_buffer (circbuf_t * buf);
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static int fill_buffer (circbuf_t * buf);
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void usbtty_poll (void);
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/* utility function for converting char* to wide string used by USB */
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static void str2wide (char *str, u16 * wide)
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{
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int i;
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for (i = 0; i < strlen (str) && str[i]; i++){
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#if defined(__LITTLE_ENDIAN)
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wide[i] = (u16) str[i];
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#elif defined(__BIG_ENDIAN)
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wide[i] = ((u16)(str[i])<<8);
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#else
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#error "__LITTLE_ENDIAN or __BIG_ENDIAN undefined"
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#endif
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}
|
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}
|
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|
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/*
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* Test whether a character is in the RX buffer
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*/
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int usbtty_tstc (void)
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{
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struct usb_endpoint_instance *endpoint =
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&endpoint_instance[rx_endpoint];
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|
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/* If no input data exists, allow more RX to be accepted */
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if(usbtty_input.size <= 0){
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udc_unset_nak(endpoint->endpoint_address&0x03);
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}
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|
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usbtty_poll ();
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return (usbtty_input.size > 0);
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}
|
|
|
|
/*
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* Read a single byte from the usb client port. Returns 1 on success, 0
|
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* otherwise. When the function is succesfull, the character read is
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* written into its argument c.
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*/
|
|
|
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int usbtty_getc (void)
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{
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char c;
|
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struct usb_endpoint_instance *endpoint =
|
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&endpoint_instance[rx_endpoint];
|
|
|
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while (usbtty_input.size <= 0) {
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udc_unset_nak(endpoint->endpoint_address&0x03);
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usbtty_poll ();
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}
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buf_pop (&usbtty_input, &c, 1);
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udc_set_nak(endpoint->endpoint_address&0x03);
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|
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return c;
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}
|
|
|
|
/*
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* Output a single byte to the usb client port.
|
|
*/
|
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void usbtty_putc (const char c)
|
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{
|
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if (!usbtty_configured ())
|
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return;
|
|
|
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buf_push (&usbtty_output, &c, 1);
|
|
/* If \n, also do \r */
|
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if (c == '\n')
|
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buf_push (&usbtty_output, "\r", 1);
|
|
|
|
/* Poll at end to handle new data... */
|
|
if ((usbtty_output.size + 2) >= usbtty_output.totalsize) {
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usbtty_poll ();
|
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}
|
|
}
|
|
|
|
/* usbtty_puts() helper function for finding the next '\n' in a string */
|
|
static int next_nl_pos (const char *s)
|
|
{
|
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int i;
|
|
|
|
for (i = 0; s[i] != '\0'; i++) {
|
|
if (s[i] == '\n')
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return i;
|
|
}
|
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return i;
|
|
}
|
|
|
|
/*
|
|
* Output a string to the usb client port - implementing flow control
|
|
*/
|
|
|
|
static void __usbtty_puts (const char *str, int len)
|
|
{
|
|
int maxlen = usbtty_output.totalsize;
|
|
int space, n;
|
|
|
|
/* break str into chunks < buffer size, if needed */
|
|
while (len > 0) {
|
|
usbtty_poll ();
|
|
|
|
space = maxlen - usbtty_output.size;
|
|
/* Empty buffer here, if needed, to ensure space... */
|
|
if (space) {
|
|
write_buffer (&usbtty_output);
|
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|
|
n = MIN (space, MIN (len, maxlen));
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buf_push (&usbtty_output, str, n);
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|
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str += n;
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len -= n;
|
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}
|
|
}
|
|
}
|
|
|
|
void usbtty_puts (const char *str)
|
|
{
|
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int n;
|
|
int len;
|
|
|
|
if (!usbtty_configured ())
|
|
return;
|
|
|
|
len = strlen (str);
|
|
/* add '\r' for each '\n' */
|
|
while (len > 0) {
|
|
n = next_nl_pos (str);
|
|
|
|
if (str[n] == '\n') {
|
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__usbtty_puts (str, n + 1);
|
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__usbtty_puts ("\r", 1);
|
|
str += (n + 1);
|
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len -= (n + 1);
|
|
} else {
|
|
/* No \n found. All done. */
|
|
__usbtty_puts (str, n);
|
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break;
|
|
}
|
|
}
|
|
|
|
/* Poll at end to handle new data... */
|
|
usbtty_poll ();
|
|
}
|
|
|
|
/*
|
|
* Initialize the usb client port.
|
|
*
|
|
*/
|
|
int drv_usbtty_init (void)
|
|
{
|
|
int rc;
|
|
char * sn;
|
|
char * tt;
|
|
int snlen;
|
|
|
|
/* Ger seiral number */
|
|
if (!(sn = getenv("serial#"))) {
|
|
sn = "000000000000";
|
|
}
|
|
snlen = strlen(sn);
|
|
if (snlen > sizeof(serial_number) - 1) {
|
|
printf ("Warning: serial number %s is too long (%d > %lu)\n",
|
|
sn, snlen, (ulong)(sizeof(serial_number) - 1));
|
|
snlen = sizeof(serial_number) - 1;
|
|
}
|
|
memcpy (serial_number, sn, snlen);
|
|
serial_number[snlen] = '\0';
|
|
|
|
/* Decide on which type of UDC device to be.
|
|
*/
|
|
|
|
if(!(tt = getenv("usbtty"))) {
|
|
tt = "generic";
|
|
}
|
|
usbtty_init_terminal_type(strcmp(tt,"cdc_acm"));
|
|
|
|
/* prepare buffers... */
|
|
buf_init (&usbtty_input, USBTTY_BUFFER_SIZE);
|
|
buf_init (&usbtty_output, USBTTY_BUFFER_SIZE);
|
|
|
|
/* Now, set up USB controller and infrastructure */
|
|
udc_init (); /* Basic USB initialization */
|
|
|
|
usbtty_init_strings ();
|
|
usbtty_init_instances ();
|
|
|
|
udc_startup_events (device_instance);/* Enable dev, init udc pointers */
|
|
udc_connect (); /* Enable pullup for host detection */
|
|
|
|
usbtty_init_endpoints ();
|
|
|
|
/* Device initialization */
|
|
memset (&usbttydev, 0, sizeof (usbttydev));
|
|
|
|
strcpy (usbttydev.name, "usbtty");
|
|
usbttydev.ext = 0; /* No extensions */
|
|
usbttydev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_OUTPUT;
|
|
usbttydev.tstc = usbtty_tstc; /* 'tstc' function */
|
|
usbttydev.getc = usbtty_getc; /* 'getc' function */
|
|
usbttydev.putc = usbtty_putc; /* 'putc' function */
|
|
usbttydev.puts = usbtty_puts; /* 'puts' function */
|
|
|
|
rc = stdio_register (&usbttydev);
|
|
|
|
return (rc == 0) ? 1 : rc;
|
|
}
|
|
|
|
static void usbtty_init_strings (void)
|
|
{
|
|
struct usb_string_descriptor *string;
|
|
|
|
usbtty_string_table[STR_LANG] =
|
|
(struct usb_string_descriptor*)wstrLang;
|
|
|
|
string = (struct usb_string_descriptor *) wstrManufacturer;
|
|
string->bLength = sizeof(wstrManufacturer);
|
|
string->bDescriptorType = USB_DT_STRING;
|
|
str2wide (CONFIG_USBD_MANUFACTURER, string->wData);
|
|
usbtty_string_table[STR_MANUFACTURER]=string;
|
|
|
|
|
|
string = (struct usb_string_descriptor *) wstrProduct;
|
|
string->bLength = sizeof(wstrProduct);
|
|
string->bDescriptorType = USB_DT_STRING;
|
|
str2wide (CONFIG_USBD_PRODUCT_NAME, string->wData);
|
|
usbtty_string_table[STR_PRODUCT]=string;
|
|
|
|
|
|
string = (struct usb_string_descriptor *) wstrSerial;
|
|
string->bLength = sizeof(serial_number);
|
|
string->bDescriptorType = USB_DT_STRING;
|
|
str2wide (serial_number, string->wData);
|
|
usbtty_string_table[STR_SERIAL]=string;
|
|
|
|
|
|
string = (struct usb_string_descriptor *) wstrConfiguration;
|
|
string->bLength = sizeof(wstrConfiguration);
|
|
string->bDescriptorType = USB_DT_STRING;
|
|
str2wide (CONFIG_USBD_CONFIGURATION_STR, string->wData);
|
|
usbtty_string_table[STR_CONFIG]=string;
|
|
|
|
|
|
string = (struct usb_string_descriptor *) wstrDataInterface;
|
|
string->bLength = sizeof(wstrDataInterface);
|
|
string->bDescriptorType = USB_DT_STRING;
|
|
str2wide (CONFIG_USBD_DATA_INTERFACE_STR, string->wData);
|
|
usbtty_string_table[STR_DATA_INTERFACE]=string;
|
|
|
|
string = (struct usb_string_descriptor *) wstrCtrlInterface;
|
|
string->bLength = sizeof(wstrCtrlInterface);
|
|
string->bDescriptorType = USB_DT_STRING;
|
|
str2wide (CONFIG_USBD_CTRL_INTERFACE_STR, string->wData);
|
|
usbtty_string_table[STR_CTRL_INTERFACE]=string;
|
|
|
|
/* Now, initialize the string table for ep0 handling */
|
|
usb_strings = usbtty_string_table;
|
|
}
|
|
|
|
static void usbtty_init_instances (void)
|
|
{
|
|
int i;
|
|
|
|
/* initialize device instance */
|
|
memset (device_instance, 0, sizeof (struct usb_device_instance));
|
|
device_instance->device_state = STATE_INIT;
|
|
device_instance->device_descriptor = &device_descriptor;
|
|
device_instance->event = usbtty_event_handler;
|
|
device_instance->cdc_recv_setup = usbtty_cdc_setup;
|
|
device_instance->bus = bus_instance;
|
|
device_instance->configurations = NUM_CONFIGS;
|
|
device_instance->configuration_instance_array = config_instance;
|
|
|
|
/* initialize bus instance */
|
|
memset (bus_instance, 0, sizeof (struct usb_bus_instance));
|
|
bus_instance->device = device_instance;
|
|
bus_instance->endpoint_array = endpoint_instance;
|
|
bus_instance->max_endpoints = 1;
|
|
bus_instance->maxpacketsize = 64;
|
|
bus_instance->serial_number_str = serial_number;
|
|
|
|
/* configuration instance */
|
|
memset (config_instance, 0,
|
|
sizeof (struct usb_configuration_instance));
|
|
config_instance->interfaces = interface_count;
|
|
config_instance->configuration_descriptor = configuration_descriptor;
|
|
config_instance->interface_instance_array = interface_instance;
|
|
|
|
/* interface instance */
|
|
memset (interface_instance, 0,
|
|
sizeof (struct usb_interface_instance));
|
|
interface_instance->alternates = 1;
|
|
interface_instance->alternates_instance_array = alternate_instance;
|
|
|
|
/* alternates instance */
|
|
memset (alternate_instance, 0,
|
|
sizeof (struct usb_alternate_instance));
|
|
alternate_instance->interface_descriptor = interface_descriptors;
|
|
alternate_instance->endpoints = NUM_ENDPOINTS;
|
|
alternate_instance->endpoints_descriptor_array = ep_descriptor_ptrs;
|
|
|
|
/* endpoint instances */
|
|
memset (&endpoint_instance[0], 0,
|
|
sizeof (struct usb_endpoint_instance));
|
|
endpoint_instance[0].endpoint_address = 0;
|
|
endpoint_instance[0].rcv_packetSize = EP0_MAX_PACKET_SIZE;
|
|
endpoint_instance[0].rcv_attributes = USB_ENDPOINT_XFER_CONTROL;
|
|
endpoint_instance[0].tx_packetSize = EP0_MAX_PACKET_SIZE;
|
|
endpoint_instance[0].tx_attributes = USB_ENDPOINT_XFER_CONTROL;
|
|
udc_setup_ep (device_instance, 0, &endpoint_instance[0]);
|
|
|
|
for (i = 1; i <= NUM_ENDPOINTS; i++) {
|
|
memset (&endpoint_instance[i], 0,
|
|
sizeof (struct usb_endpoint_instance));
|
|
|
|
endpoint_instance[i].endpoint_address =
|
|
ep_descriptor_ptrs[i - 1]->bEndpointAddress;
|
|
|
|
endpoint_instance[i].rcv_attributes =
|
|
ep_descriptor_ptrs[i - 1]->bmAttributes;
|
|
|
|
endpoint_instance[i].rcv_packetSize =
|
|
le16_to_cpu(ep_descriptor_ptrs[i - 1]->wMaxPacketSize);
|
|
|
|
endpoint_instance[i].tx_attributes =
|
|
ep_descriptor_ptrs[i - 1]->bmAttributes;
|
|
|
|
endpoint_instance[i].tx_packetSize =
|
|
le16_to_cpu(ep_descriptor_ptrs[i - 1]->wMaxPacketSize);
|
|
|
|
endpoint_instance[i].tx_attributes =
|
|
ep_descriptor_ptrs[i - 1]->bmAttributes;
|
|
|
|
urb_link_init (&endpoint_instance[i].rcv);
|
|
urb_link_init (&endpoint_instance[i].rdy);
|
|
urb_link_init (&endpoint_instance[i].tx);
|
|
urb_link_init (&endpoint_instance[i].done);
|
|
|
|
if (endpoint_instance[i].endpoint_address & USB_DIR_IN)
|
|
endpoint_instance[i].tx_urb =
|
|
usbd_alloc_urb (device_instance,
|
|
&endpoint_instance[i]);
|
|
else
|
|
endpoint_instance[i].rcv_urb =
|
|
usbd_alloc_urb (device_instance,
|
|
&endpoint_instance[i]);
|
|
}
|
|
}
|
|
|
|
static void usbtty_init_endpoints (void)
|
|
{
|
|
int i;
|
|
|
|
bus_instance->max_endpoints = NUM_ENDPOINTS + 1;
|
|
for (i = 1; i <= NUM_ENDPOINTS; i++) {
|
|
udc_setup_ep (device_instance, i, &endpoint_instance[i]);
|
|
}
|
|
}
|
|
|
|
/* usbtty_init_terminal_type
|
|
*
|
|
* Do some late binding for our device type.
|
|
*/
|
|
static void usbtty_init_terminal_type(short type)
|
|
{
|
|
switch(type){
|
|
/* CDC ACM */
|
|
case 0:
|
|
/* Assign endpoint descriptors */
|
|
ep_descriptor_ptrs[0] =
|
|
&acm_configuration_descriptors[0].notification_endpoint;
|
|
ep_descriptor_ptrs[1] =
|
|
&acm_configuration_descriptors[0].data_endpoints[0];
|
|
ep_descriptor_ptrs[2] =
|
|
&acm_configuration_descriptors[0].data_endpoints[1];
|
|
|
|
/* Enumerate Device Descriptor */
|
|
device_descriptor.bDeviceClass =
|
|
COMMUNICATIONS_DEVICE_CLASS;
|
|
device_descriptor.idProduct =
|
|
cpu_to_le16(CONFIG_USBD_PRODUCTID_CDCACM);
|
|
|
|
/* Assign endpoint indices */
|
|
tx_endpoint = ACM_TX_ENDPOINT;
|
|
rx_endpoint = ACM_RX_ENDPOINT;
|
|
|
|
/* Configuration Descriptor */
|
|
configuration_descriptor =
|
|
(struct usb_configuration_descriptor*)
|
|
&acm_configuration_descriptors;
|
|
|
|
/* Interface count */
|
|
interface_count = NUM_ACM_INTERFACES;
|
|
break;
|
|
|
|
/* BULK IN/OUT & Default */
|
|
case 1:
|
|
default:
|
|
/* Assign endpoint descriptors */
|
|
ep_descriptor_ptrs[0] =
|
|
&gserial_configuration_descriptors[0].data_endpoints[0];
|
|
ep_descriptor_ptrs[1] =
|
|
&gserial_configuration_descriptors[0].data_endpoints[1];
|
|
ep_descriptor_ptrs[2] =
|
|
&gserial_configuration_descriptors[0].data_endpoints[2];
|
|
|
|
/* Enumerate Device Descriptor */
|
|
device_descriptor.bDeviceClass = 0xFF;
|
|
device_descriptor.idProduct =
|
|
cpu_to_le16(CONFIG_USBD_PRODUCTID_GSERIAL);
|
|
|
|
/* Assign endpoint indices */
|
|
tx_endpoint = GSERIAL_TX_ENDPOINT;
|
|
rx_endpoint = GSERIAL_RX_ENDPOINT;
|
|
|
|
/* Configuration Descriptor */
|
|
configuration_descriptor =
|
|
(struct usb_configuration_descriptor*)
|
|
&gserial_configuration_descriptors;
|
|
|
|
/* Interface count */
|
|
interface_count = NUM_GSERIAL_INTERFACES;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
static struct urb *next_urb (struct usb_device_instance *device,
|
|
struct usb_endpoint_instance *endpoint)
|
|
{
|
|
struct urb *current_urb = NULL;
|
|
int space;
|
|
|
|
/* If there's a queue, then we should add to the last urb */
|
|
if (!endpoint->tx_queue) {
|
|
current_urb = endpoint->tx_urb;
|
|
} else {
|
|
/* Last urb from tx chain */
|
|
current_urb =
|
|
p2surround (struct urb, link, endpoint->tx.prev);
|
|
}
|
|
|
|
/* Make sure this one has enough room */
|
|
space = current_urb->buffer_length - current_urb->actual_length;
|
|
if (space > 0) {
|
|
return current_urb;
|
|
} else { /* No space here */
|
|
/* First look at done list */
|
|
current_urb = first_urb_detached (&endpoint->done);
|
|
if (!current_urb) {
|
|
current_urb = usbd_alloc_urb (device, endpoint);
|
|
}
|
|
|
|
urb_append (&endpoint->tx, current_urb);
|
|
endpoint->tx_queue++;
|
|
}
|
|
return current_urb;
|
|
}
|
|
|
|
static int write_buffer (circbuf_t * buf)
|
|
{
|
|
if (!usbtty_configured ()) {
|
|
return 0;
|
|
}
|
|
|
|
struct usb_endpoint_instance *endpoint =
|
|
&endpoint_instance[tx_endpoint];
|
|
struct urb *current_urb = NULL;
|
|
|
|
current_urb = next_urb (device_instance, endpoint);
|
|
/* TX data still exists - send it now
|
|
*/
|
|
if(endpoint->sent < current_urb->actual_length){
|
|
if(udc_endpoint_write (endpoint)){
|
|
/* Write pre-empted by RX */
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (buf->size) {
|
|
char *dest;
|
|
|
|
int space_avail;
|
|
int popnum, popped;
|
|
int total = 0;
|
|
|
|
/* Break buffer into urb sized pieces,
|
|
* and link each to the endpoint
|
|
*/
|
|
while (buf->size > 0) {
|
|
|
|
if (!current_urb) {
|
|
TTYERR ("current_urb is NULL, buf->size %d\n",
|
|
buf->size);
|
|
return total;
|
|
}
|
|
|
|
dest = (char*)current_urb->buffer +
|
|
current_urb->actual_length;
|
|
|
|
space_avail =
|
|
current_urb->buffer_length -
|
|
current_urb->actual_length;
|
|
popnum = MIN (space_avail, buf->size);
|
|
if (popnum == 0)
|
|
break;
|
|
|
|
popped = buf_pop (buf, dest, popnum);
|
|
if (popped == 0)
|
|
break;
|
|
current_urb->actual_length += popped;
|
|
total += popped;
|
|
|
|
/* If endpoint->last == 0, then transfers have
|
|
* not started on this endpoint
|
|
*/
|
|
if (endpoint->last == 0) {
|
|
if(udc_endpoint_write (endpoint)){
|
|
/* Write pre-empted by RX */
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
}/* end while */
|
|
return total;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fill_buffer (circbuf_t * buf)
|
|
{
|
|
struct usb_endpoint_instance *endpoint =
|
|
&endpoint_instance[rx_endpoint];
|
|
|
|
if (endpoint->rcv_urb && endpoint->rcv_urb->actual_length) {
|
|
unsigned int nb = 0;
|
|
char *src = (char *) endpoint->rcv_urb->buffer;
|
|
unsigned int rx_avail = buf->totalsize - buf->size;
|
|
|
|
if(rx_avail >= endpoint->rcv_urb->actual_length){
|
|
|
|
nb = endpoint->rcv_urb->actual_length;
|
|
buf_push (buf, src, nb);
|
|
endpoint->rcv_urb->actual_length = 0;
|
|
|
|
}
|
|
return nb;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int usbtty_configured (void)
|
|
{
|
|
return usbtty_configured_flag;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
static void usbtty_event_handler (struct usb_device_instance *device,
|
|
usb_device_event_t event, int data)
|
|
{
|
|
switch (event) {
|
|
case DEVICE_RESET:
|
|
case DEVICE_BUS_INACTIVE:
|
|
usbtty_configured_flag = 0;
|
|
break;
|
|
case DEVICE_CONFIGURED:
|
|
usbtty_configured_flag = 1;
|
|
break;
|
|
|
|
case DEVICE_ADDRESS_ASSIGNED:
|
|
usbtty_init_endpoints ();
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
int usbtty_cdc_setup(struct usb_device_request *request, struct urb *urb)
|
|
{
|
|
switch (request->bRequest){
|
|
|
|
case ACM_SET_CONTROL_LINE_STATE: /* Implies DTE ready */
|
|
break;
|
|
case ACM_SEND_ENCAPSULATED_COMMAND : /* Required */
|
|
break;
|
|
case ACM_SET_LINE_ENCODING : /* DTE stop/parity bits
|
|
* per character */
|
|
break;
|
|
case ACM_GET_ENCAPSULATED_RESPONSE : /* request response */
|
|
break;
|
|
case ACM_GET_LINE_ENCODING : /* request DTE rate,
|
|
* stop/parity bits */
|
|
memcpy (urb->buffer , &rs232_desc, sizeof(rs232_desc));
|
|
urb->actual_length = sizeof(rs232_desc);
|
|
|
|
break;
|
|
default:
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
/*
|
|
* Since interrupt handling has not yet been implemented, we use this function
|
|
* to handle polling. This is called by the tstc,getc,putc,puts routines to
|
|
* update the USB state.
|
|
*/
|
|
void usbtty_poll (void)
|
|
{
|
|
/* New interrupts? */
|
|
udc_irq();
|
|
|
|
/* Write any output data to host buffer
|
|
* (do this before checking interrupts to avoid missing one)
|
|
*/
|
|
if (usbtty_configured ()) {
|
|
write_buffer (&usbtty_output);
|
|
}
|
|
|
|
/* New interrupts? */
|
|
udc_irq();
|
|
|
|
/* Check for new data from host..
|
|
* (do this after checking interrupts to get latest data)
|
|
*/
|
|
if (usbtty_configured ()) {
|
|
fill_buffer (&usbtty_input);
|
|
}
|
|
|
|
/* New interrupts? */
|
|
udc_irq();
|
|
|
|
}
|
|
|