drivers/usb/gadget/ci13xxx_udc.h

   1 /*
   2  * ci13xxx_udc.h - structures, registers, and macros MIPS USB IP core
   3  *
   4  * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
   5  *
   6  * Author: David Lopo
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  * Description: MIPS USB IP core family device controller
  13  *              Structures, registers and logging macros
  14  */
  15
  16 #ifndef _CI13XXX_h_
  17 #define _CI13XXX_h_
  18
  19 /******************************************************************************
  20  * DEFINE
  21  *****************************************************************************/
  22 #define CI13XXX_PAGE_SIZE  4096ul /* page size for TD's */
  23 #define ENDPT_MAX          (16)
  24 #define CTRL_PAYLOAD_MAX   (64)
  25 #define RX        (0)  /* similar to USB_DIR_OUT but can be used as an index */
  26 #define TX        (1)  /* similar to USB_DIR_IN  but can be used as an index */
  27
  28 /******************************************************************************
  29  * STRUCTURES
  30  *****************************************************************************/
  31 /* DMA layout of transfer descriptors */
  32 struct ci13xxx_td {
  33         /* 0 */
  34         u32 next;
  35 #define TD_TERMINATE          BIT(0)
  36         /* 1 */
  37         u32 token;
  38 #define TD_STATUS             (0x00FFUL <<  0)
  39 #define TD_STATUS_TR_ERR      BIT(3)
  40 #define TD_STATUS_DT_ERR      BIT(5)
  41 #define TD_STATUS_HALTED      BIT(6)
  42 #define TD_STATUS_ACTIVE      BIT(7)
  43 #define TD_MULTO              (0x0003UL << 10)
  44 #define TD_IOC                BIT(15)
  45 #define TD_TOTAL_BYTES        (0x7FFFUL << 16)
  46         /* 2 */
  47         u32 page[5];
  48 #define TD_CURR_OFFSET        (0x0FFFUL <<  0)
  49 #define TD_FRAME_NUM          (0x07FFUL <<  0)
  50 #define TD_RESERVED_MASK      (0x0FFFUL <<  0)
  51 } __attribute__ ((packed));
  52
  53 /* DMA layout of queue heads */
  54 struct ci13xxx_qh {
  55         /* 0 */
  56         u32 cap;
  57 #define QH_IOS                BIT(15)
  58 #define QH_MAX_PKT            (0x07FFUL << 16)
  59 #define QH_ZLT                BIT(29)
  60 #define QH_MULT               (0x0003UL << 30)
  61         /* 1 */
  62         u32 curr;
  63         /* 2 - 8 */
  64         struct ci13xxx_td        td;
  65         /* 9 */
  66         u32 RESERVED;
  67         struct usb_ctrlrequest   setup;
  68 } __attribute__ ((packed));
  69
  70 /* Extension of usb_request */
  71 struct ci13xxx_req {
  72         struct usb_request   req;
  73         unsigned             map;
  74         struct list_head     queue;
  75         struct ci13xxx_td   *ptr;
  76         dma_addr_t           dma;
  77 };
  78
  79 /* Extension of usb_ep */
  80 struct ci13xxx_ep {
  81         struct usb_ep                          ep;
  82         const struct usb_endpoint_descriptor  *desc;
  83         u8                                     dir;
  84         u8                                     num;
  85         u8                                     type;
  86         char                                   name[16];
  87         struct {
  88                 struct list_head   queue;
  89                 struct ci13xxx_qh *ptr;
  90                 dma_addr_t         dma;
  91         }                                      qh[2];
  92         struct usb_request                    *status;
  93         int                                    wedge;
  94
  95         /* global resources */
  96         spinlock_t                            *lock;
  97         struct device                         *device;
  98         struct dma_pool                       *td_pool;
  99 };
 100
 101 struct ci13xxx;
 102 struct ci13xxx_udc_driver {
 103         const char      *name;
 104         unsigned long    flags;
 105 #define CI13XXX_REGS_SHARED             BIT(0)
 106 #define CI13XXX_REQUIRE_TRANSCEIVER     BIT(1)
 107 #define CI13XXX_PULLUP_ON_VBUS          BIT(2)
 108 #define CI13XXX_DISABLE_STREAMING       BIT(3)
 109
 110 #define CI13XXX_CONTROLLER_RESET_EVENT          0
 111 #define CI13XXX_CONTROLLER_STOPPED_EVENT        1
 112         void    (*notify_event) (struct ci13xxx *udc, unsigned event);
 113 };
 114
 115 /* CI13XXX UDC descriptor & global resources */
 116 struct ci13xxx {
 117         spinlock_t                *lock;      /* ctrl register bank access */
 118         void __iomem              *regs;      /* registers address space */
 119
 120         struct dma_pool           *qh_pool;   /* DMA pool for queue heads */
 121         struct dma_pool           *td_pool;   /* DMA pool for transfer descs */
 122
 123         struct usb_gadget          gadget;     /* USB slave device */
 124         struct ci13xxx_ep          ci13xxx_ep[ENDPT_MAX]; /* extended endpts */
 125
 126         struct usb_gadget_driver  *driver;     /* 3rd party gadget driver */
 127         struct ci13xxx_udc_driver *udc_driver; /* device controller driver */
 128         int                        vbus_active; /* is VBUS active */
 129         struct otg_transceiver    *transceiver; /* Transceiver struct */
 130 };
 131
 132 /******************************************************************************
 133  * REGISTERS
 134  *****************************************************************************/
 135 /* register size */
 136 #define REG_BITS   (32)
 137
 138 /* HCCPARAMS */
 139 #define HCCPARAMS_LEN         BIT(17)
 140
 141 /* DCCPARAMS */
 142 #define DCCPARAMS_DEN         (0x1F << 0)
 143 #define DCCPARAMS_DC          BIT(7)
 144
 145 /* TESTMODE */
 146 #define TESTMODE_FORCE        BIT(0)
 147
 148 /* USBCMD */
 149 #define USBCMD_RS             BIT(0)
 150 #define USBCMD_RST            BIT(1)
 151 #define USBCMD_SUTW           BIT(13)
 152
 153 /* USBSTS & USBINTR */
 154 #define USBi_UI               BIT(0)
 155 #define USBi_UEI              BIT(1)
 156 #define USBi_PCI              BIT(2)
 157 #define USBi_URI              BIT(6)
 158 #define USBi_SLI              BIT(8)
 159
 160 /* DEVICEADDR */
 161 #define DEVICEADDR_USBADRA    BIT(24)
 162 #define DEVICEADDR_USBADR     (0x7FUL << 25)
 163
 164 /* PORTSC */
 165 #define PORTSC_SUSP           BIT(7)
 166 #define PORTSC_HSP            BIT(9)
 167 #define PORTSC_PTC            (0x0FUL << 16)
 168
 169 /* DEVLC */
 170 #define DEVLC_PSPD            (0x03UL << 25)
 171 #define    DEVLC_PSPD_HS      (0x02UL << 25)
 172
 173 /* USBMODE */
 174 #define USBMODE_CM            (0x03UL <<  0)
 175 #define    USBMODE_CM_IDLE    (0x00UL <<  0)
 176 #define    USBMODE_CM_DEVICE  (0x02UL <<  0)
 177 #define    USBMODE_CM_HOST    (0x03UL <<  0)
 178 #define USBMODE_SLOM          BIT(3)
 179 #define USBMODE_SDIS          BIT(4)
 180
 181 /* ENDPTCTRL */
 182 #define ENDPTCTRL_RXS         BIT(0)
 183 #define ENDPTCTRL_RXT         (0x03UL <<  2)
 184 #define ENDPTCTRL_RXR         BIT(6)         /* reserved for port 0 */
 185 #define ENDPTCTRL_RXE         BIT(7)
 186 #define ENDPTCTRL_TXS         BIT(16)
 187 #define ENDPTCTRL_TXT         (0x03UL << 18)
 188 #define ENDPTCTRL_TXR         BIT(22)        /* reserved for port 0 */
 189 #define ENDPTCTRL_TXE         BIT(23)
 190
 191 /******************************************************************************
 192  * LOGGING
 193  *****************************************************************************/
 194 #define ci13xxx_printk(level, format, args...) \
 195 do { \
 196         if (_udc == NULL) \
 197                 printk(level "[%s] " format "\n", __func__, ## args); \
 198         else \
 199                 dev_printk(level, _udc->gadget.dev.parent, \
 200                            "[%s] " format "\n", __func__, ## args); \
 201 } while (0)
 202
 203 #define err(format, args...)    ci13xxx_printk(KERN_ERR, format, ## args)
 204 #define warn(format, args...)   ci13xxx_printk(KERN_WARNING, format, ## args)
 205 #define info(format, args...)   ci13xxx_printk(KERN_INFO, format, ## args)
 206
 207 #ifdef TRACE
 208 #define trace(format, args...)      ci13xxx_printk(KERN_DEBUG, format, ## args)
 209 #define dbg_trace(format, args...)  dev_dbg(dev, format, ##args)
 210 #else
 211 #define trace(format, args...)      do {} while (0)
 212 #define dbg_trace(format, args...)  do {} while (0)
 213 #endif
 214
 215 #endif  /* _CI13XXX_h_ */