include/usb/mv_udc.h

   1 /*
   2  * Copyright 2011, Marvell Semiconductor Inc.
   3  * Lei Wen <leiwen@marvell.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8
   9 #ifndef __MV_UDC_H__
  10 #define __MV_UDC_H__
  11
  12 #include <asm/byteorder.h>
  13 #include <asm/errno.h>
  14 #include <linux/usb/ch9.h>
  15 #include <linux/usb/gadget.h>
  16
  17 #include "../../drivers/usb/host/ehci.h"
  18
  19 #define NUM_ENDPOINTS           6
  20
  21 /* Endpoint parameters */
  22 #define MAX_ENDPOINTS           4
  23
  24 #define EP_MAX_PACKET_SIZE      0x200
  25 #define EP0_MAX_PACKET_SIZE     64
  26
  27 struct mv_udc {
  28 #define MICRO_8FRAME    0x8
  29 #define USBCMD_ITC(x)   ((((x) > 0xff) ? 0xff : x) << 16)
  30 #define USBCMD_FS2      (1 << 15)
  31 #define USBCMD_RST      (1 << 1)
  32 #define USBCMD_RUN      (1)
  33         u32 usbcmd;             /* 0x140 */
  34 #define STS_SLI         (1 << 8)
  35 #define STS_URI         (1 << 6)
  36 #define STS_PCI         (1 << 2)
  37 #define STS_UEI         (1 << 1)
  38 #define STS_UI          (1 << 0)
  39         u32 usbsts;             /* 0x144 */
  40         u32 pad1[3];
  41         u32 devaddr;            /* 0x154 */
  42         u32 epinitaddr;         /* 0x158 */
  43         u32 pad2[10];
  44 #define PTS_ENABLE      2
  45 #define PTS(x)          (((x) & 0x3) << 30)
  46 #define PFSC            (1 << 24)
  47         u32 portsc;             /* 0x184 */
  48         u32 pad3[8];
  49 #define USBMODE_DEVICE  2
  50         u32 usbmode;            /* 0x1a8 */
  51         u32 epstat;             /* 0x1ac */
  52 #define EPT_TX(x)       (1 << (((x) & 0xffff) + 16))
  53 #define EPT_RX(x)       (1 << ((x) & 0xffff))
  54         u32 epprime;            /* 0x1b0 */
  55         u32 epflush;            /* 0x1b4 */
  56         u32 pad4;
  57         u32 epcomp;             /* 0x1bc */
  58 #define CTRL_TXE        (1 << 23)
  59 #define CTRL_TXR        (1 << 22)
  60 #define CTRL_RXE        (1 << 7)
  61 #define CTRL_RXR        (1 << 6)
  62 #define CTRL_TXT_BULK   (2 << 18)
  63 #define CTRL_RXT_BULK   (2 << 2)
  64         u32 epctrl[16];         /* 0x1c0 */
  65 };
  66
  67 struct mv_ep {
  68         struct usb_ep ep;
  69         struct list_head queue;
  70         const struct usb_endpoint_descriptor *desc;
  71
  72         struct usb_request req;
  73         uint8_t *b_buf;
  74         uint32_t b_len;
  75         uint8_t b_fast[64] __aligned(ARCH_DMA_MINALIGN);
  76 };
  77
  78 struct mv_drv {
  79         struct usb_gadget               gadget;
  80         struct usb_gadget_driver        *driver;
  81         struct ehci_ctrl                *ctrl;
  82         struct ept_queue_head           *epts;
  83         struct ept_queue_item           *items[2 * NUM_ENDPOINTS];
  84         uint8_t                         *items_mem;
  85         struct mv_ep                    ep[NUM_ENDPOINTS];
  86 };
  87
  88 struct ept_queue_head {
  89         unsigned config;
  90         unsigned current;       /* read-only */
  91
  92         unsigned next;
  93         unsigned info;
  94         unsigned page0;
  95         unsigned page1;
  96         unsigned page2;
  97         unsigned page3;
  98         unsigned page4;
  99         unsigned reserved_0;
 100
 101         unsigned char setup_data[8];
 102
 103         unsigned reserved_1;
 104         unsigned reserved_2;
 105         unsigned reserved_3;
 106         unsigned reserved_4;
 107 };
 108
 109 #define CONFIG_MAX_PKT(n)       ((n) << 16)
 110 #define CONFIG_ZLT              (1 << 29)       /* stop on zero-len xfer */
 111 #define CONFIG_IOS              (1 << 15)       /* IRQ on setup */
 112
 113 struct ept_queue_item {
 114         unsigned next;
 115         unsigned info;
 116         unsigned page0;
 117         unsigned page1;
 118         unsigned page2;
 119         unsigned page3;
 120         unsigned page4;
 121         unsigned reserved;
 122 };
 123
 124 #define TERMINATE 1
 125 #define INFO_BYTES(n)           ((n) << 16)
 126 #define INFO_IOC                (1 << 15)
 127 #define INFO_ACTIVE             (1 << 7)
 128 #define INFO_HALTED             (1 << 6)
 129 #define INFO_BUFFER_ERROR       (1 << 5)
 130 #define INFO_TX_ERROR           (1 << 3)
 131
 132 #endif /* __MV_UDC_H__ */