1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * udc.h - ChipIdea UDC structures 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved. 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * Author: David Lopo 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #ifndef __DRIVERS_USB_CHIPIDEA_UDC_H 11*4882a593Smuzhiyun #define __DRIVERS_USB_CHIPIDEA_UDC_H 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #include <linux/list.h> 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #define CTRL_PAYLOAD_MAX 64 16*4882a593Smuzhiyun #define RX 0 /* similar to USB_DIR_OUT but can be used as an index */ 17*4882a593Smuzhiyun #define TX 1 /* similar to USB_DIR_IN but can be used as an index */ 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun /* DMA layout of transfer descriptors */ 20*4882a593Smuzhiyun struct ci_hw_td { 21*4882a593Smuzhiyun /* 0 */ 22*4882a593Smuzhiyun __le32 next; 23*4882a593Smuzhiyun #define TD_TERMINATE BIT(0) 24*4882a593Smuzhiyun #define TD_ADDR_MASK (0xFFFFFFEUL << 5) 25*4882a593Smuzhiyun /* 1 */ 26*4882a593Smuzhiyun __le32 token; 27*4882a593Smuzhiyun #define TD_STATUS (0x00FFUL << 0) 28*4882a593Smuzhiyun #define TD_STATUS_TR_ERR BIT(3) 29*4882a593Smuzhiyun #define TD_STATUS_DT_ERR BIT(5) 30*4882a593Smuzhiyun #define TD_STATUS_HALTED BIT(6) 31*4882a593Smuzhiyun #define TD_STATUS_ACTIVE BIT(7) 32*4882a593Smuzhiyun #define TD_MULTO (0x0003UL << 10) 33*4882a593Smuzhiyun #define TD_IOC BIT(15) 34*4882a593Smuzhiyun #define TD_TOTAL_BYTES (0x7FFFUL << 16) 35*4882a593Smuzhiyun /* 2 */ 36*4882a593Smuzhiyun __le32 page[5]; 37*4882a593Smuzhiyun #define TD_CURR_OFFSET (0x0FFFUL << 0) 38*4882a593Smuzhiyun #define TD_FRAME_NUM (0x07FFUL << 0) 39*4882a593Smuzhiyun #define TD_RESERVED_MASK (0x0FFFUL << 0) 40*4882a593Smuzhiyun } __attribute__ ((packed, aligned(4))); 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun /* DMA layout of queue heads */ 43*4882a593Smuzhiyun struct ci_hw_qh { 44*4882a593Smuzhiyun /* 0 */ 45*4882a593Smuzhiyun __le32 cap; 46*4882a593Smuzhiyun #define QH_IOS BIT(15) 47*4882a593Smuzhiyun #define QH_MAX_PKT (0x07FFUL << 16) 48*4882a593Smuzhiyun #define QH_ZLT BIT(29) 49*4882a593Smuzhiyun #define QH_MULT (0x0003UL << 30) 50*4882a593Smuzhiyun #define QH_ISO_MULT(x) ((x >> 11) & 0x03) 51*4882a593Smuzhiyun /* 1 */ 52*4882a593Smuzhiyun __le32 curr; 53*4882a593Smuzhiyun /* 2 - 8 */ 54*4882a593Smuzhiyun struct ci_hw_td td; 55*4882a593Smuzhiyun /* 9 */ 56*4882a593Smuzhiyun __le32 RESERVED; 57*4882a593Smuzhiyun struct usb_ctrlrequest setup; 58*4882a593Smuzhiyun } __attribute__ ((packed, aligned(4))); 59*4882a593Smuzhiyun 60*4882a593Smuzhiyun struct td_node { 61*4882a593Smuzhiyun struct list_head td; 62*4882a593Smuzhiyun dma_addr_t dma; 63*4882a593Smuzhiyun struct ci_hw_td *ptr; 64*4882a593Smuzhiyun int td_remaining_size; 65*4882a593Smuzhiyun }; 66*4882a593Smuzhiyun 67*4882a593Smuzhiyun /** 68*4882a593Smuzhiyun * struct ci_hw_req - usb request representation 69*4882a593Smuzhiyun * @req: request structure for gadget drivers 70*4882a593Smuzhiyun * @queue: link to QH list 71*4882a593Smuzhiyun * @tds: link to TD list 72*4882a593Smuzhiyun */ 73*4882a593Smuzhiyun struct ci_hw_req { 74*4882a593Smuzhiyun struct usb_request req; 75*4882a593Smuzhiyun struct list_head queue; 76*4882a593Smuzhiyun struct list_head tds; 77*4882a593Smuzhiyun }; 78*4882a593Smuzhiyun 79*4882a593Smuzhiyun #ifdef CONFIG_USB_CHIPIDEA_UDC 80*4882a593Smuzhiyun 81*4882a593Smuzhiyun int ci_hdrc_gadget_init(struct ci_hdrc *ci); 82*4882a593Smuzhiyun void ci_hdrc_gadget_destroy(struct ci_hdrc *ci); 83*4882a593Smuzhiyun 84*4882a593Smuzhiyun #else 85*4882a593Smuzhiyun ci_hdrc_gadget_init(struct ci_hdrc * ci)86*4882a593Smuzhiyunstatic inline int ci_hdrc_gadget_init(struct ci_hdrc *ci) 87*4882a593Smuzhiyun { 88*4882a593Smuzhiyun return -ENXIO; 89*4882a593Smuzhiyun } 90*4882a593Smuzhiyun ci_hdrc_gadget_destroy(struct ci_hdrc * ci)91*4882a593Smuzhiyunstatic inline void ci_hdrc_gadget_destroy(struct ci_hdrc *ci) 92*4882a593Smuzhiyun { 93*4882a593Smuzhiyun 94*4882a593Smuzhiyun } 95*4882a593Smuzhiyun 96*4882a593Smuzhiyun #endif 97*4882a593Smuzhiyun 98*4882a593Smuzhiyun #endif /* __DRIVERS_USB_CHIPIDEA_UDC_H */ 99