drivers/usb/gadget/udc/fsl_qe_udc.h

   1 /*
   2  * drivers/usb/gadget/qe_udc.h
   3  *
   4  * Copyright (C) 2006-2008 Freescale Semiconductor, Inc. All rights reserved.
   5  *
   6  *      Xiaobo Xie <X.Xie@freescale.com>
   7  *      Li Yang <leoli@freescale.com>
   8  *
   9  * Description:
  10  * Freescale USB device/endpoint management registers
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or (at
  15  * your option) any later version.
  16  */
  17
  18 #ifndef __FSL_QE_UDC_H
  19 #define __FSL_QE_UDC_H
  20
  21 /* SoC type */
  22 #define PORT_CPM        0
  23 #define PORT_QE         1
  24
  25 #define USB_MAX_ENDPOINTS               4
  26 #define USB_MAX_PIPES                   USB_MAX_ENDPOINTS
  27 #define USB_EP0_MAX_SIZE                64
  28 #define USB_MAX_CTRL_PAYLOAD            0x4000
  29 #define USB_BDRING_LEN                  16
  30 #define USB_BDRING_LEN_RX               256
  31 #define USB_BDRING_LEN_TX               16
  32 #define MIN_EMPTY_BDS                   128
  33 #define MAX_DATA_BDS                    8
  34 #define USB_CRC_SIZE                    2
  35 #define USB_DIR_BOTH                    0x88
  36 #define R_BUF_MAXSIZE                   0x800
  37 #define USB_EP_PARA_ALIGNMENT           32
  38
  39 /* USB Mode Register bit define */
  40 #define USB_MODE_EN             0x01
  41 #define USB_MODE_HOST           0x02
  42 #define USB_MODE_TEST           0x04
  43 #define USB_MODE_SFTE           0x08
  44 #define USB_MODE_RESUME         0x40
  45 #define USB_MODE_LSS            0x80
  46
  47 /* USB Slave Address Register Mask */
  48 #define USB_SLVADDR_MASK        0x7F
  49
  50 /* USB Endpoint register define */
  51 #define USB_EPNUM_MASK          0xF000
  52 #define USB_EPNUM_SHIFT         12
  53
  54 #define USB_TRANS_MODE_SHIFT    8
  55 #define USB_TRANS_CTR           0x0000
  56 #define USB_TRANS_INT           0x0100
  57 #define USB_TRANS_BULK          0x0200
  58 #define USB_TRANS_ISO           0x0300
  59
  60 #define USB_EP_MF               0x0020
  61 #define USB_EP_RTE              0x0010
  62
  63 #define USB_THS_SHIFT           2
  64 #define USB_THS_MASK            0x000c
  65 #define USB_THS_NORMAL          0x0
  66 #define USB_THS_IGNORE_IN       0x0004
  67 #define USB_THS_NACK            0x0008
  68 #define USB_THS_STALL           0x000c
  69
  70 #define USB_RHS_SHIFT           0
  71 #define USB_RHS_MASK            0x0003
  72 #define USB_RHS_NORMAL          0x0
  73 #define USB_RHS_IGNORE_OUT      0x0001
  74 #define USB_RHS_NACK            0x0002
  75 #define USB_RHS_STALL           0x0003
  76
  77 #define USB_RTHS_MASK           0x000f
  78
  79 /* USB Command Register define */
  80 #define USB_CMD_STR_FIFO        0x80
  81 #define USB_CMD_FLUSH_FIFO      0x40
  82 #define USB_CMD_ISFT            0x20
  83 #define USB_CMD_DSFT            0x10
  84 #define USB_CMD_EP_MASK         0x03
  85
  86 /* USB Event and Mask Register define */
  87 #define USB_E_MSF_MASK          0x0800
  88 #define USB_E_SFT_MASK          0x0400
  89 #define USB_E_RESET_MASK        0x0200
  90 #define USB_E_IDLE_MASK         0x0100
  91 #define USB_E_TXE4_MASK         0x0080
  92 #define USB_E_TXE3_MASK         0x0040
  93 #define USB_E_TXE2_MASK         0x0020
  94 #define USB_E_TXE1_MASK         0x0010
  95 #define USB_E_SOF_MASK          0x0008
  96 #define USB_E_BSY_MASK          0x0004
  97 #define USB_E_TXB_MASK          0x0002
  98 #define USB_E_RXB_MASK          0x0001
  99 #define USBER_ALL_CLEAR         0x0fff
 100
 101 #define USB_E_DEFAULT_DEVICE   (USB_E_RESET_MASK | USB_E_TXE4_MASK | \
 102                                 USB_E_TXE3_MASK | USB_E_TXE2_MASK | \
 103                                 USB_E_TXE1_MASK | USB_E_BSY_MASK | \
 104                                 USB_E_TXB_MASK | USB_E_RXB_MASK)
 105
 106 #define USB_E_TXE_MASK         (USB_E_TXE4_MASK | USB_E_TXE3_MASK|\
 107                                  USB_E_TXE2_MASK | USB_E_TXE1_MASK)
 108 /* USB Status Register define */
 109 #define USB_IDLE_STATUS_MASK    0x01
 110
 111 /* USB Start of Frame Timer */
 112 #define USB_USSFT_MASK          0x3FFF
 113
 114 /* USB Frame Number Register */
 115 #define USB_USFRN_MASK          0xFFFF
 116
 117 struct usb_device_para{
 118         u16     epptr[4];
 119         u32     rstate;
 120         u32     rptr;
 121         u16     frame_n;
 122         u16     rbcnt;
 123         u32     rtemp;
 124         u32     rxusb_data;
 125         u16     rxuptr;
 126         u8      reso[2];
 127         u32     softbl;
 128         u8      sofucrctemp;
 129 };
 130
 131 struct usb_ep_para{
 132         u16     rbase;
 133         u16     tbase;
 134         u8      rbmr;
 135         u8      tbmr;
 136         u16     mrblr;
 137         u16     rbptr;
 138         u16     tbptr;
 139         u32     tstate;
 140         u32     tptr;
 141         u16     tcrc;
 142         u16     tbcnt;
 143         u32     ttemp;
 144         u16     txusbu_ptr;
 145         u8      reserve[2];
 146 };
 147
 148 #define USB_BUSMODE_GBL         0x20
 149 #define USB_BUSMODE_BO_MASK     0x18
 150 #define USB_BUSMODE_BO_SHIFT    0x3
 151 #define USB_BUSMODE_BE          0x2
 152 #define USB_BUSMODE_CETM        0x04
 153 #define USB_BUSMODE_DTB         0x02
 154
 155 /* Endpoint basic handle */
 156 #define ep_index(EP)            ((EP)->ep.desc->bEndpointAddress & 0xF)
 157 #define ep_maxpacket(EP)        ((EP)->ep.maxpacket)
 158 #define ep_is_in(EP)    ((ep_index(EP) == 0) ? (EP->udc->ep0_dir == \
 159                         USB_DIR_IN) : ((EP)->ep.desc->bEndpointAddress \
 160                         & USB_DIR_IN) == USB_DIR_IN)
 161
 162 /* ep0 transfer state */
 163 #define WAIT_FOR_SETUP          0
 164 #define DATA_STATE_XMIT         1
 165 #define DATA_STATE_NEED_ZLP     2
 166 #define WAIT_FOR_OUT_STATUS     3
 167 #define DATA_STATE_RECV         4
 168
 169 /* ep tramsfer mode */
 170 #define USBP_TM_CTL     0
 171 #define USBP_TM_ISO     1
 172 #define USBP_TM_BULK    2
 173 #define USBP_TM_INT     3
 174
 175 /*-----------------------------------------------------------------------------
 176         USB RX And TX DATA Frame
 177  -----------------------------------------------------------------------------*/
 178 struct qe_frame{
 179         u8 *data;
 180         u32 len;
 181         u32 status;
 182         u32 info;
 183
 184         void *privdata;
 185         struct list_head node;
 186 };
 187
 188 /* Frame structure, info field. */
 189 #define PID_DATA0              0x80000000 /* Data toggle zero */
 190 #define PID_DATA1              0x40000000 /* Data toggle one  */
 191 #define PID_SETUP              0x20000000 /* setup bit */
 192 #define SETUP_STATUS           0x10000000 /* setup status bit */
 193 #define SETADDR_STATUS         0x08000000 /* setupup address status bit */
 194 #define NO_REQ                 0x04000000 /* Frame without request */
 195 #define HOST_DATA              0x02000000 /* Host data frame */
 196 #define FIRST_PACKET_IN_FRAME  0x01000000 /* first packet in the frame */
 197 #define TOKEN_FRAME            0x00800000 /* Host token frame */
 198 #define ZLP                    0x00400000 /* Zero length packet */
 199 #define IN_TOKEN_FRAME         0x00200000 /* In token package */
 200 #define OUT_TOKEN_FRAME        0x00100000 /* Out token package */
 201 #define SETUP_TOKEN_FRAME      0x00080000 /* Setup token package */
 202 #define STALL_FRAME            0x00040000 /* Stall handshake */
 203 #define NACK_FRAME             0x00020000 /* Nack handshake */
 204 #define NO_PID                 0x00010000 /* No send PID */
 205 #define NO_CRC                 0x00008000 /* No send CRC */
 206 #define HOST_COMMAND           0x00004000 /* Host command frame   */
 207
 208 /* Frame status field */
 209 /* Receive side */
 210 #define FRAME_OK               0x00000000 /* Frame transmitted or received OK */
 211 #define FRAME_ERROR            0x80000000 /* Error occurred on frame */
 212 #define START_FRAME_LOST       0x40000000 /* START_FRAME_LOST */
 213 #define END_FRAME_LOST         0x20000000 /* END_FRAME_LOST */
 214 #define RX_ER_NONOCT           0x10000000 /* Rx Non Octet Aligned Packet */
 215 #define RX_ER_BITSTUFF         0x08000000 /* Frame Aborted --Received packet
 216                                              with bit stuff error */
 217 #define RX_ER_CRC              0x04000000 /* Received packet with CRC error */
 218 #define RX_ER_OVERUN           0x02000000 /* Over-run occurred on reception */
 219 #define RX_ER_PID              0x01000000 /* Wrong PID received */
 220 /* Tranmit side */
 221 #define TX_ER_NAK              0x00800000 /* Received NAK handshake */
 222 #define TX_ER_STALL            0x00400000 /* Received STALL handshake */
 223 #define TX_ER_TIMEOUT          0x00200000 /* Transmit time out */
 224 #define TX_ER_UNDERUN          0x00100000 /* Transmit underrun */
 225 #define FRAME_INPROGRESS       0x00080000 /* Frame is being transmitted */
 226 #define ER_DATA_UNDERUN        0x00040000 /* Frame is shorter then expected */
 227 #define ER_DATA_OVERUN         0x00020000 /* Frame is longer then expected */
 228
 229 /* QE USB frame operation functions */
 230 #define frame_get_length(frm) (frm->len)
 231 #define frame_set_length(frm, leng) (frm->len = leng)
 232 #define frame_get_data(frm) (frm->data)
 233 #define frame_set_data(frm, dat) (frm->data = dat)
 234 #define frame_get_info(frm) (frm->info)
 235 #define frame_set_info(frm, inf) (frm->info = inf)
 236 #define frame_get_status(frm) (frm->status)
 237 #define frame_set_status(frm, stat) (frm->status = stat)
 238 #define frame_get_privdata(frm) (frm->privdata)
 239 #define frame_set_privdata(frm, dat) (frm->privdata = dat)
 240
 241 static inline void qe_frame_clean(struct qe_frame *frm)
 242 {
 243         frame_set_data(frm, NULL);
 244         frame_set_length(frm, 0);
 245         frame_set_status(frm, FRAME_OK);
 246         frame_set_info(frm, 0);
 247         frame_set_privdata(frm, NULL);
 248 }
 249
 250 static inline void qe_frame_init(struct qe_frame *frm)
 251 {
 252         qe_frame_clean(frm);
 253         INIT_LIST_HEAD(&(frm->node));
 254 }
 255
 256 struct qe_req {
 257         struct usb_request req;
 258         struct list_head queue;
 259         /* ep_queue() func will add
 260          a request->queue into a udc_ep->queue 'd tail */
 261         struct qe_ep *ep;
 262         unsigned mapped:1;
 263 };
 264
 265 struct qe_ep {
 266         struct usb_ep ep;
 267         struct list_head queue;
 268         struct qe_udc *udc;
 269         struct usb_gadget *gadget;
 270
 271         u8 state;
 272
 273         struct qe_bd __iomem *rxbase;
 274         struct qe_bd __iomem *n_rxbd;
 275         struct qe_bd __iomem *e_rxbd;
 276
 277         struct qe_bd __iomem *txbase;
 278         struct qe_bd __iomem *n_txbd;
 279         struct qe_bd __iomem *c_txbd;
 280
 281         struct qe_frame *rxframe;
 282         u8 *rxbuffer;
 283         dma_addr_t rxbuf_d;
 284         u8 rxbufmap;
 285         unsigned char localnack;
 286         int has_data;
 287
 288         struct qe_frame *txframe;
 289         struct qe_req *tx_req;
 290         int sent;  /*data already sent */
 291         int last;  /*data sent in the last time*/
 292
 293         u8 dir;
 294         u8 epnum;
 295         u8 tm; /* transfer mode */
 296         u8 data01;
 297         u8 init;
 298
 299         u8 already_seen;
 300         u8 enable_tasklet;
 301         u8 setup_stage;
 302         u32 last_io;            /* timestamp */
 303
 304         char name[14];
 305
 306         unsigned double_buf:1;
 307         unsigned stopped:1;
 308         unsigned fnf:1;
 309         unsigned has_dma:1;
 310
 311         u8 ackwait;
 312         u8 dma_channel;
 313         u16 dma_counter;
 314         int lch;
 315
 316         struct timer_list timer;
 317 };
 318
 319 struct qe_udc {
 320         struct usb_gadget gadget;
 321         struct usb_gadget_driver *driver;
 322         struct device *dev;
 323         struct qe_ep eps[USB_MAX_ENDPOINTS];
 324         struct usb_ctrlrequest local_setup_buff;
 325         spinlock_t lock;        /* lock for set/config qe_udc */
 326         unsigned long soc_type;         /* QE or CPM soc */
 327
 328         struct qe_req *status_req;      /* ep0 status request */
 329
 330         /* USB and EP Parameter Block pointer */
 331         struct usb_device_para __iomem *usb_param;
 332         struct usb_ep_para __iomem *ep_param[4];
 333
 334         u32 max_pipes;          /* Device max pipes */
 335         u32 max_use_endpts;     /* Max endpointes to be used */
 336         u32 bus_reset;          /* Device is bus reseting */
 337         u32 resume_state;       /* USB state to resume*/
 338         u32 usb_state;          /* USB current state */
 339         u32 usb_next_state;     /* USB next state */
 340         u32 ep0_state;          /* Enpoint zero state */
 341         u32 ep0_dir;            /* Enpoint zero direction: can be
 342                                 USB_DIR_IN or USB_DIR_OUT*/
 343         u32 usb_sof_count;      /* SOF count */
 344         u32 errors;             /* USB ERRORs count */
 345
 346         u8 *tmpbuf;
 347         u32 c_start;
 348         u32 c_end;
 349
 350         u8 *nullbuf;
 351         u8 *statusbuf;
 352         dma_addr_t nullp;
 353         u8 nullmap;
 354         u8 device_address;      /* Device USB address */
 355
 356         unsigned int usb_clock;
 357         unsigned int usb_irq;
 358         struct usb_ctlr __iomem *usb_regs;
 359
 360         struct tasklet_struct rx_tasklet;
 361
 362         struct completion *done;        /* to make sure release() is done */
 363 };
 364
 365 #define EP_STATE_IDLE   0
 366 #define EP_STATE_NACK   1
 367 #define EP_STATE_STALL  2
 368
 369 /*
 370  * transmit BD's status
 371  */
 372 #define T_R           0x80000000         /* ready bit */
 373 #define T_W           0x20000000         /* wrap bit */
 374 #define T_I           0x10000000         /* interrupt on completion */
 375 #define T_L           0x08000000         /* last */
 376 #define T_TC          0x04000000         /* transmit CRC */
 377 #define T_CNF         0x02000000         /* wait for  transmit confirm */
 378 #define T_LSP         0x01000000         /* Low-speed transaction */
 379 #define T_PID         0x00c00000         /* packet id */
 380 #define T_NAK         0x00100000         /* No ack. */
 381 #define T_STAL        0x00080000         /* Stall received */
 382 #define T_TO          0x00040000         /* time out */
 383 #define T_UN          0x00020000         /* underrun */
 384
 385 #define DEVICE_T_ERROR    (T_UN | T_TO)
 386 #define HOST_T_ERROR      (T_UN | T_TO | T_NAK | T_STAL)
 387 #define DEVICE_T_BD_MASK  DEVICE_T_ERROR
 388 #define HOST_T_BD_MASK    HOST_T_ERROR
 389
 390 #define T_PID_SHIFT   6
 391 #define T_PID_DATA0   0x00800000         /* Data 0 toggle */
 392 #define T_PID_DATA1   0x00c00000         /* Data 1 toggle */
 393
 394 /*
 395  * receive BD's status
 396  */
 397 #define R_E           0x80000000         /* buffer empty */
 398 #define R_W           0x20000000         /* wrap bit */
 399 #define R_I           0x10000000         /* interrupt on reception */
 400 #define R_L           0x08000000         /* last */
 401 #define R_F           0x04000000         /* first */
 402 #define R_PID         0x00c00000         /* packet id */
 403 #define R_NO          0x00100000         /* Rx Non Octet Aligned Packet */
 404 #define R_AB          0x00080000         /* Frame Aborted */
 405 #define R_CR          0x00040000         /* CRC Error */
 406 #define R_OV          0x00020000         /* Overrun */
 407
 408 #define R_ERROR       (R_NO | R_AB | R_CR | R_OV)
 409 #define R_BD_MASK     R_ERROR
 410
 411 #define R_PID_DATA0   0x00000000
 412 #define R_PID_DATA1   0x00400000
 413 #define R_PID_SETUP   0x00800000
 414
 415 #define CPM_USB_STOP_TX 0x2e600000
 416 #define CPM_USB_RESTART_TX 0x2e600000
 417 #define CPM_USB_STOP_TX_OPCODE 0x0a
 418 #define CPM_USB_RESTART_TX_OPCODE 0x0b
 419 #define CPM_USB_EP_SHIFT 5
 420
 421 #endif  /* __FSL_QE_UDC_H */