97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
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/*
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* udc.h - ChipIdea UDC structures
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*
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* Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
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*
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* Author: David Lopo
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __DRIVERS_USB_CHIPIDEA_UDC_H
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#define __DRIVERS_USB_CHIPIDEA_UDC_H
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#include <linux/list.h>
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#define CTRL_PAYLOAD_MAX 64
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#define RX 0 /* similar to USB_DIR_OUT but can be used as an index */
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#define TX 1 /* similar to USB_DIR_IN but can be used as an index */
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/* DMA layout of transfer descriptors */
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struct ci13xxx_td {
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/* 0 */
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u32 next;
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#define TD_TERMINATE BIT(0)
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#define TD_ADDR_MASK (0xFFFFFFEUL << 5)
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/* 1 */
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u32 token;
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#define TD_STATUS (0x00FFUL << 0)
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#define TD_STATUS_TR_ERR BIT(3)
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#define TD_STATUS_DT_ERR BIT(5)
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#define TD_STATUS_HALTED BIT(6)
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#define TD_STATUS_ACTIVE BIT(7)
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#define TD_MULTO (0x0003UL << 10)
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#define TD_IOC BIT(15)
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#define TD_TOTAL_BYTES (0x7FFFUL << 16)
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/* 2 */
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u32 page[5];
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#define TD_CURR_OFFSET (0x0FFFUL << 0)
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#define TD_FRAME_NUM (0x07FFUL << 0)
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#define TD_RESERVED_MASK (0x0FFFUL << 0)
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} __attribute__ ((packed));
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/* DMA layout of queue heads */
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struct ci13xxx_qh {
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/* 0 */
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u32 cap;
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#define QH_IOS BIT(15)
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#define QH_MAX_PKT (0x07FFUL << 16)
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#define QH_ZLT BIT(29)
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#define QH_MULT (0x0003UL << 30)
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/* 1 */
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u32 curr;
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/* 2 - 8 */
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struct ci13xxx_td td;
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/* 9 */
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u32 RESERVED;
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struct usb_ctrlrequest setup;
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} __attribute__ ((packed));
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/* Extension of usb_request */
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struct ci13xxx_req {
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struct usb_request req;
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unsigned map;
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struct list_head queue;
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struct ci13xxx_td *ptr;
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dma_addr_t dma;
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struct ci13xxx_td *zptr;
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dma_addr_t zdma;
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};
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#ifdef CONFIG_USB_CHIPIDEA_UDC
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irqreturn_t udc_irq(int irq, void *data);
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int udc_probe(struct ci13xxx_udc_driver *driver, struct device *dev,
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void __iomem *regs, struct ci13xxx **_udc);
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void udc_remove(struct ci13xxx *udc);
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#else
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static inline irqreturn_t udc_irq(int irq, void *data)
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{
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return IRQ_NONE;
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}
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static inline
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int udc_probe(struct ci13xxx_udc_driver *driver, struct device *dev,
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void __iomem *regs, struct ci13xxx **_udc)
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{
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return -ENODEV;
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}
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static inline void udc_remove(struct ci13xxx *udc)
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{
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}
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#endif
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#endif /* __DRIVERS_USB_CHIPIDEA_UDC_H */
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