1 /* 2 * Copyright (C) 2006 Bryan O'Donoghue, CodeHermit 3 * bodonoghue@codehermit.ie 4 * 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the 18 * Free Software Foundation, Inc., 19 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 20 * 21 */ 22 23 #include <commproc.h> 24 25 /* Mode Register */ 26 #define USMOD_EN 0x01 27 #define USMOD_HOST 0x02 28 #define USMOD_TEST 0x04 29 #define USMOD_SFTE 0x08 30 #define USMOD_RESUME 0x40 31 #define USMOD_LSS 0x80 32 33 /* Endpoint Registers */ 34 #define USEP_RHS_NORM 0x00 35 #define USEP_RHS_IGNORE 0x01 36 #define USEP_RHS_NAK 0x02 37 #define USEP_RHS_STALL 0x03 38 39 #define USEP_THS_NORM 0x00 40 #define USEP_THS_IGNORE 0x04 41 #define USEP_THS_NAK 0x08 42 #define USEP_THS_STALL 0x0C 43 44 #define USEP_RTE 0x10 45 #define USEP_MF 0x20 46 47 #define USEP_TM_CONTROL 0x00 48 #define USEP_TM_INT 0x100 49 #define USEP_TM_BULK 0x200 50 #define USEP_TM_ISO 0x300 51 52 /* Command Register */ 53 #define USCOM_EP0 0x00 54 #define USCOM_EP1 0x01 55 #define USCOM_EP2 0x02 56 #define USCOM_EP3 0x03 57 58 #define USCOM_FLUSH 0x40 59 #define USCOM_STR 0x80 60 61 /* Event Register */ 62 #define USB_E_RXB 0x0001 63 #define USB_E_TXB 0x0002 64 #define USB_E_BSY 0x0004 65 #define USB_E_SOF 0x0008 66 #define USB_E_TXE1 0x0010 67 #define USB_E_TXE2 0x0020 68 #define USB_E_TXE3 0x0040 69 #define USB_E_TXE4 0x0080 70 #define USB_TX_ERRMASK (USB_E_TXE1|USB_E_TXE2|USB_E_TXE3|USB_E_TXE4) 71 #define USB_E_IDLE 0x0100 72 #define USB_E_RESET 0x0200 73 74 /* Mask Register */ 75 #define USBS_IDLE 0x01 76 77 /* RX Buffer Descriptor */ 78 #define RX_BD_OV 0x02 79 #define RX_BD_CR 0x04 80 #define RX_BD_AB 0x08 81 #define RX_BD_NO 0x10 82 #define RX_BD_PID_DATA0 0x00 83 #define RX_BD_PID_DATA1 0x40 84 #define RX_BD_PID_SETUP 0x80 85 #define RX_BD_F 0x400 86 #define RX_BD_L 0x800 87 #define RX_BD_I 0x1000 88 #define RX_BD_W 0x2000 89 #define RX_BD_E 0x8000 90 91 /* Useful masks */ 92 #define RX_BD_PID_BITMASK (RX_BD_PID_DATA1 | RX_BD_PID_SETUP) 93 #define STALL_BITMASK (USEP_THS_STALL | USEP_RHS_STALL) 94 #define NAK_BITMASK (USEP_THS_NAK | USEP_RHS_NAK) 95 #define CBD_TX_BITMASK (TX_BD_R | TX_BD_L | TX_BD_TC | TX_BD_I | TX_BD_CNF) 96 97 /* TX Buffer Descriptor */ 98 #define TX_BD_UN 0x02 99 #define TX_BD_TO 0x04 100 #define TX_BD_NO_PID 0x00 101 #define TX_BD_PID_DATA0 0x80 102 #define TX_BD_PID_DATA1 0xC0 103 #define TX_BD_CNF 0x200 104 #define TX_BD_TC 0x400 105 #define TX_BD_L 0x800 106 #define TX_BD_I 0x1000 107 #define TX_BD_W 0x2000 108 #define TX_BD_R 0x8000 109 110 /* Implementation specific defines */ 111 112 #define EP_MIN_PACKET_SIZE 0x08 113 #define MAX_ENDPOINTS 0x04 114 #define FIFO_SIZE 0x10 115 #define EP_MAX_PKT FIFO_SIZE 116 #define TX_RING_SIZE 0x04 117 #define RX_RING_SIZE 0x06 118 #define USB_MAX_PKT 0x40 119 #define TOGGLE_TX_PID(x) x= ((~x)&0x40)|0x80 120 #define TOGGLE_RX_PID(x) x^= 0x40 121 #define EP_ATTACHED 0x01 /* Endpoint has a urb attached or not */ 122 #define EP_SEND_ZLP 0x02 /* Send ZLP y/n ? */ 123 124 #define PROFF_USB 0x00000000 125 #define CPM_USB_BASE 0x00000A00 126 127 /* UDC device defines */ 128 #define EP0_MAX_PACKET_SIZE EP_MAX_PKT 129 #define UDC_OUT_ENDPOINT 0x02 130 #define UDC_OUT_PACKET_SIZE EP_MIN_PACKET_SIZE 131 #define UDC_IN_ENDPOINT 0x03 132 #define UDC_IN_PACKET_SIZE EP_MIN_PACKET_SIZE 133 #define UDC_INT_ENDPOINT 0x01 134 #define UDC_INT_PACKET_SIZE UDC_IN_PACKET_SIZE 135 #define UDC_BULK_PACKET_SIZE EP_MIN_PACKET_SIZE 136 137 struct mpc8xx_ep { 138 struct urb * urb; 139 unsigned char pid; 140 unsigned char sc; 141 volatile cbd_t * prx; 142 }; 143 144 typedef struct mpc8xx_usb{ 145 char usmod; /* Mode Register */ 146 char usaddr; /* Slave Address Register */ 147 char uscom; /* Command Register */ 148 char res1; /* Reserved */ 149 ushort usep[4]; 150 ulong res2; /* Reserved */ 151 ushort usber; /* Event Register */ 152 ushort res3; /* Reserved */ 153 ushort usbmr; /* Mask Register */ 154 char res4; /* Reserved */ 155 char usbs; /* Status Register */ 156 char res5[8]; /* Reserved */ 157 }usb_t; 158 159 typedef struct mpc8xx_parameter_ram{ 160 ushort ep0ptr; /* Endpoint Pointer Register 0 */ 161 ushort ep1ptr; /* Endpoint Pointer Register 1 */ 162 ushort ep2ptr; /* Endpoint Pointer Register 2 */ 163 ushort ep3ptr; /* Endpoint Pointer Register 3 */ 164 uint rstate; /* Receive state */ 165 uint rptr; /* Receive internal data pointer */ 166 ushort frame_n; /* Frame number */ 167 ushort rbcnt; /* Receive byte count */ 168 uint rtemp; /* Receive temp cp use only */ 169 uint rxusb; /* Rx Data Temp */ 170 ushort rxuptr; /* Rx microcode return address temp */ 171 }usb_pram_t; 172 173 typedef struct endpoint_parameter_block_pointer{ 174 ushort rbase; /* RxBD base address */ 175 ushort tbase; /* TxBD base address */ 176 char rfcr; /* Rx Function code */ 177 char tfcr; /* Tx Function code */ 178 ushort mrblr; /* Maximum Receive Buffer Length */ 179 ushort rbptr; /* RxBD pointer Next Buffer Descriptor */ 180 ushort tbptr; /* TxBD pointer Next Buffer Descriptor */ 181 ulong tstate; /* Transmit internal state */ 182 ulong tptr; /* Transmit internal data pointer */ 183 ushort tcrc; /* Transmit temp CRC */ 184 ushort tbcnt; /* Transmit internal bye count */ 185 ulong ttemp; /* Tx temp */ 186 ushort txuptr; /* Tx microcode return address */ 187 ushort res1; /* Reserved */ 188 }usb_epb_t; 189 190 typedef enum mpc8xx_udc_state{ 191 STATE_NOT_READY, 192 STATE_ERROR, 193 STATE_READY, 194 }mpc8xx_udc_state_t; 195 196 /* Declarations */ 197 int udc_init(void); 198 void udc_irq(void); 199 int udc_endpoint_write(struct usb_endpoint_instance *endpoint); 200 void udc_setup_ep(struct usb_device_instance *device, unsigned int ep, 201 struct usb_endpoint_instance *endpoint); 202 void udc_connect(void); 203 void udc_disconnect(void); 204 void udc_enable(struct usb_device_instance *device); 205 void udc_disable(void); 206 void udc_startup_events(struct usb_device_instance *device); 207 208 /* Flow control */ 209 void udc_set_nak(int epid); 210 void udc_unset_nak (int epid); 211