/* * Copyright (C) 2006 Bryan O'Donoghue, CodeHermit * bodonoghue@codehermit.ie * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the * Free Software Foundation, Inc., * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * */ #include <commproc.h> /* Mode Register */ #define USMOD_EN 0x01 #define USMOD_HOST 0x02 #define USMOD_TEST 0x04 #define USMOD_SFTE 0x08 #define USMOD_RESUME 0x40 #define USMOD_LSS 0x80 /* Endpoint Registers */ #define USEP_RHS_NORM 0x00 #define USEP_RHS_IGNORE 0x01 #define USEP_RHS_NAK 0x02 #define USEP_RHS_STALL 0x03 #define USEP_THS_NORM 0x00 #define USEP_THS_IGNORE 0x04 #define USEP_THS_NAK 0x08 #define USEP_THS_STALL 0x0C #define USEP_RTE 0x10 #define USEP_MF 0x20 #define USEP_TM_CONTROL 0x00 #define USEP_TM_INT 0x100 #define USEP_TM_BULK 0x200 #define USEP_TM_ISO 0x300 /* Command Register */ #define USCOM_EP0 0x00 #define USCOM_EP1 0x01 #define USCOM_EP2 0x02 #define USCOM_EP3 0x03 #define USCOM_FLUSH 0x40 #define USCOM_STR 0x80 /* Event Register */ #define USB_E_RXB 0x0001 #define USB_E_TXB 0x0002 #define USB_E_BSY 0x0004 #define USB_E_SOF 0x0008 #define USB_E_TXE1 0x0010 #define USB_E_TXE2 0x0020 #define USB_E_TXE3 0x0040 #define USB_E_TXE4 0x0080 #define USB_TX_ERRMASK (USB_E_TXE1|USB_E_TXE2|USB_E_TXE3|USB_E_TXE4) #define USB_E_IDLE 0x0100 #define USB_E_RESET 0x0200 /* Mask Register */ #define USBS_IDLE 0x01 /* RX Buffer Descriptor */ #define RX_BD_OV 0x02 #define RX_BD_CR 0x04 #define RX_BD_AB 0x08 #define RX_BD_NO 0x10 #define RX_BD_PID_DATA0 0x00 #define RX_BD_PID_DATA1 0x40 #define RX_BD_PID_SETUP 0x80 #define RX_BD_F 0x400 #define RX_BD_L 0x800 #define RX_BD_I 0x1000 #define RX_BD_W 0x2000 #define RX_BD_E 0x8000 /* Useful masks */ #define RX_BD_PID_BITMASK (RX_BD_PID_DATA1 | RX_BD_PID_SETUP) #define STALL_BITMASK (USEP_THS_STALL | USEP_RHS_STALL) #define NAK_BITMASK (USEP_THS_NAK | USEP_RHS_NAK) #define CBD_TX_BITMASK (TX_BD_R | TX_BD_L | TX_BD_TC | TX_BD_I | TX_BD_CNF) /* TX Buffer Descriptor */ #define TX_BD_UN 0x02 #define TX_BD_TO 0x04 #define TX_BD_NO_PID 0x00 #define TX_BD_PID_DATA0 0x80 #define TX_BD_PID_DATA1 0xC0 #define TX_BD_CNF 0x200 #define TX_BD_TC 0x400 #define TX_BD_L 0x800 #define TX_BD_I 0x1000 #define TX_BD_W 0x2000 #define TX_BD_R 0x8000 /* Implementation specific defines */ #define EP_MIN_PACKET_SIZE 0x08 #define MAX_ENDPOINTS 0x04 #define FIFO_SIZE 0x10 #define EP_MAX_PKT FIFO_SIZE #define TX_RING_SIZE 0x04 #define RX_RING_SIZE 0x06 #define USB_MAX_PKT 0x40 #define TOGGLE_TX_PID(x) x= ((~x)&0x40)|0x80 #define TOGGLE_RX_PID(x) x^= 0x40 #define EP_ATTACHED 0x01 /* Endpoint has a urb attached or not */ #define EP_SEND_ZLP 0x02 /* Send ZLP y/n ? */ #define PROFF_USB 0x00000000 #define CPM_USB_BASE 0x00000A00 /* UDC device defines */ #define EP0_MAX_PACKET_SIZE EP_MAX_PKT #define UDC_OUT_ENDPOINT 0x02 #define UDC_OUT_PACKET_SIZE EP_MIN_PACKET_SIZE #define UDC_IN_ENDPOINT 0x03 #define UDC_IN_PACKET_SIZE EP_MIN_PACKET_SIZE #define UDC_INT_ENDPOINT 0x01 #define UDC_INT_PACKET_SIZE UDC_IN_PACKET_SIZE #define UDC_BULK_PACKET_SIZE EP_MIN_PACKET_SIZE struct mpc8xx_ep { struct urb * urb; unsigned char pid; unsigned char sc; volatile cbd_t * prx; }; typedef struct mpc8xx_usb{ char usmod; /* Mode Register */ char usaddr; /* Slave Address Register */ char uscom; /* Command Register */ char res1; /* Reserved */ ushort usep[4]; ulong res2; /* Reserved */ ushort usber; /* Event Register */ ushort res3; /* Reserved */ ushort usbmr; /* Mask Register */ char res4; /* Reserved */ char usbs; /* Status Register */ char res5[8]; /* Reserved */ }usb_t; typedef struct mpc8xx_parameter_ram{ ushort ep0ptr; /* Endpoint Pointer Register 0 */ ushort ep1ptr; /* Endpoint Pointer Register 1 */ ushort ep2ptr; /* Endpoint Pointer Register 2 */ ushort ep3ptr; /* Endpoint Pointer Register 3 */ uint rstate; /* Receive state */ uint rptr; /* Receive internal data pointer */ ushort frame_n; /* Frame number */ ushort rbcnt; /* Receive byte count */ uint rtemp; /* Receive temp cp use only */ uint rxusb; /* Rx Data Temp */ ushort rxuptr; /* Rx microcode return address temp */ }usb_pram_t; typedef struct endpoint_parameter_block_pointer{ ushort rbase; /* RxBD base address */ ushort tbase; /* TxBD base address */ char rfcr; /* Rx Function code */ char tfcr; /* Tx Function code */ ushort mrblr; /* Maximum Receive Buffer Length */ ushort rbptr; /* RxBD pointer Next Buffer Descriptor */ ushort tbptr; /* TxBD pointer Next Buffer Descriptor */ ulong tstate; /* Transmit internal state */ ulong tptr; /* Transmit internal data pointer */ ushort tcrc; /* Transmit temp CRC */ ushort tbcnt; /* Transmit internal bye count */ ulong ttemp; /* Tx temp */ ushort txuptr; /* Tx microcode return address */ ushort res1; /* Reserved */ }usb_epb_t; typedef enum mpc8xx_udc_state{ STATE_NOT_READY, STATE_ERROR, STATE_READY, }mpc8xx_udc_state_t; /* Declarations */ int udc_init(void); void udc_irq(void); int udc_endpoint_write(struct usb_endpoint_instance *endpoint); void udc_setup_ep(struct usb_device_instance *device, unsigned int ep, struct usb_endpoint_instance *endpoint); void udc_connect(void); void udc_disconnect(void); void udc_enable(struct usb_device_instance *device); void udc_disable(void); void udc_startup_events(struct usb_device_instance *device); /* Flow control */ void udc_set_nak(int epid); void udc_unset_nak (int epid);