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kernel-ark/drivers/usb/gadget/mv_u3d.h
Yu Xu 3d4eb9dfa3 usb: gadget: mv: Add USB 3.0 device driver for Marvell PXA2128 chip. 
It supports Marvell USB 3.0 device controller for PXA2128 chip.

Signed-off-by: Yu Xu <yuxu@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-06-22 13:08:21 +03:00

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/*
* Copyright (C) 2011 Marvell International Ltd. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*/
#ifndef __MV_U3D_H
#define __MV_U3D_H
#define MV_U3D_EP_CONTEXT_ALIGNMENT 32
#define MV_U3D_TRB_ALIGNMENT 16
#define MV_U3D_DMA_BOUNDARY 4096
#define MV_U3D_EP0_MAX_PKT_SIZE 512
/* ep0 transfer state */
#define MV_U3D_WAIT_FOR_SETUP 0
#define MV_U3D_DATA_STATE_XMIT 1
#define MV_U3D_DATA_STATE_NEED_ZLP 2
#define MV_U3D_WAIT_FOR_OUT_STATUS 3
#define MV_U3D_DATA_STATE_RECV 4
#define MV_U3D_STATUS_STAGE 5
#define MV_U3D_EP_MAX_LENGTH_TRANSFER 0x10000
/* USB3 Interrupt Status */
#define MV_U3D_USBINT_SETUP 0x00000001
#define MV_U3D_USBINT_RX_COMPLETE 0x00000002
#define MV_U3D_USBINT_TX_COMPLETE 0x00000004
#define MV_U3D_USBINT_UNDER_RUN 0x00000008
#define MV_U3D_USBINT_RXDESC_ERR 0x00000010
#define MV_U3D_USBINT_TXDESC_ERR 0x00000020
#define MV_U3D_USBINT_RX_TRB_COMPLETE 0x00000040
#define MV_U3D_USBINT_TX_TRB_COMPLETE 0x00000080
#define MV_U3D_USBINT_VBUS_VALID 0x00010000
#define MV_U3D_USBINT_STORAGE_CMD_FULL 0x00020000
#define MV_U3D_USBINT_LINK_CHG 0x01000000
/* USB3 Interrupt Enable */
#define MV_U3D_INTR_ENABLE_SETUP 0x00000001
#define MV_U3D_INTR_ENABLE_RX_COMPLETE 0x00000002
#define MV_U3D_INTR_ENABLE_TX_COMPLETE 0x00000004
#define MV_U3D_INTR_ENABLE_UNDER_RUN 0x00000008
#define MV_U3D_INTR_ENABLE_RXDESC_ERR 0x00000010
#define MV_U3D_INTR_ENABLE_TXDESC_ERR 0x00000020
#define MV_U3D_INTR_ENABLE_RX_TRB_COMPLETE 0x00000040
#define MV_U3D_INTR_ENABLE_TX_TRB_COMPLETE 0x00000080
#define MV_U3D_INTR_ENABLE_RX_BUFFER_ERR 0x00000100
#define MV_U3D_INTR_ENABLE_VBUS_VALID 0x00010000
#define MV_U3D_INTR_ENABLE_STORAGE_CMD_FULL 0x00020000
#define MV_U3D_INTR_ENABLE_LINK_CHG 0x01000000
#define MV_U3D_INTR_ENABLE_PRIME_STATUS 0x02000000
/* USB3 Link Change */
#define MV_U3D_LINK_CHANGE_LINK_UP 0x00000001
#define MV_U3D_LINK_CHANGE_SUSPEND 0x00000002
#define MV_U3D_LINK_CHANGE_RESUME 0x00000004
#define MV_U3D_LINK_CHANGE_WRESET 0x00000008
#define MV_U3D_LINK_CHANGE_HRESET 0x00000010
#define MV_U3D_LINK_CHANGE_VBUS_INVALID 0x00000020
#define MV_U3D_LINK_CHANGE_INACT 0x00000040
#define MV_U3D_LINK_CHANGE_DISABLE_AFTER_U0 0x00000080
#define MV_U3D_LINK_CHANGE_U1 0x00000100
#define MV_U3D_LINK_CHANGE_U2 0x00000200
#define MV_U3D_LINK_CHANGE_U3 0x00000400
/* bridge setting */
#define MV_U3D_BRIDGE_SETTING_VBUS_VALID (1 << 16)
/* Command Register Bit Masks */
#define MV_U3D_CMD_RUN_STOP 0x00000001
#define MV_U3D_CMD_CTRL_RESET 0x00000002
/* ep control register */
#define MV_U3D_EPXCR_EP_TYPE_CONTROL 0
#define MV_U3D_EPXCR_EP_TYPE_ISOC 1
#define MV_U3D_EPXCR_EP_TYPE_BULK 2
#define MV_U3D_EPXCR_EP_TYPE_INT 3
#define MV_U3D_EPXCR_EP_ENABLE_SHIFT 4
#define MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT 12
#define MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT 16
#define MV_U3D_USB_BULK_BURST_OUT 6
#define MV_U3D_USB_BULK_BURST_IN 14
#define MV_U3D_EPXCR_EP_FLUSH (1 << 7)
#define MV_U3D_EPXCR_EP_HALT (1 << 1)
#define MV_U3D_EPXCR_EP_INIT (1)
/* TX/RX Status Register */
#define MV_U3D_XFERSTATUS_COMPLETE_SHIFT 24
#define MV_U3D_COMPLETE_INVALID 0
#define MV_U3D_COMPLETE_SUCCESS 1
#define MV_U3D_COMPLETE_BUFF_ERR 2
#define MV_U3D_COMPLETE_SHORT_PACKET 3
#define MV_U3D_COMPLETE_TRB_ERR 5
#define MV_U3D_XFERSTATUS_TRB_LENGTH_MASK (0xFFFFFF)
#define MV_U3D_USB_LINK_BYPASS_VBUS 0x8
#define MV_U3D_LTSSM_PHY_INIT_DONE 0x80000000
#define MV_U3D_LTSSM_NEVER_GO_COMPLIANCE 0x40000000
#define MV_U3D_USB3_OP_REGS_OFFSET 0x100
#define MV_U3D_USB3_PHY_OFFSET 0xB800
#define DCS_ENABLE 0x1
/* timeout */
#define MV_U3D_RESET_TIMEOUT 10000
#define MV_U3D_FLUSH_TIMEOUT 100000
#define MV_U3D_OWN_TIMEOUT 10000
#define LOOPS_USEC_SHIFT 4
#define LOOPS_USEC (1 << LOOPS_USEC_SHIFT)
#define LOOPS(timeout) ((timeout) >> LOOPS_USEC_SHIFT)
/* ep direction */
#define MV_U3D_EP_DIR_IN 1
#define MV_U3D_EP_DIR_OUT 0
#define mv_u3d_ep_dir(ep) (((ep)->ep_num == 0) ? \
((ep)->u3d->ep0_dir) : ((ep)->direction))
/* usb capability registers */
struct mv_u3d_cap_regs {
u32 rsvd[5];
u32 dboff; /* doorbell register offset */
u32 rtsoff; /* runtime register offset */
u32 vuoff; /* vendor unique register offset */
};
/* operation registers */
struct mv_u3d_op_regs {
u32 usbcmd; /* Command register */
u32 rsvd1[11];
u32 dcbaapl; /* Device Context Base Address low register */
u32 dcbaaph; /* Device Context Base Address high register */
u32 rsvd2[243];
u32 portsc; /* port status and control register*/
u32 portlinkinfo; /* port link info register*/
u32 rsvd3[9917];
u32 doorbell; /* doorbell register */
};
/* control enpoint enable registers */
struct epxcr {
u32 epxoutcr0; /* ep out control 0 register */
u32 epxoutcr1; /* ep out control 1 register */
u32 epxincr0; /* ep in control 0 register */
u32 epxincr1; /* ep in control 1 register */
};
/* transfer status registers */
struct xferstatus {
u32 curdeqlo; /* current TRB pointer low */
u32 curdeqhi; /* current TRB pointer high */
u32 statuslo; /* transfer status low */
u32 statushi; /* transfer status high */
};
/* vendor unique control registers */
struct mv_u3d_vuc_regs {
u32 ctrlepenable; /* control endpoint enable register */
u32 setuplock; /* setup lock register */
u32 endcomplete; /* endpoint transfer complete register */
u32 intrcause; /* interrupt cause register */
u32 intrenable; /* interrupt enable register */
u32 trbcomplete; /* TRB complete register */
u32 linkchange; /* link change register */
u32 rsvd1[5];
u32 trbunderrun; /* TRB underrun register */
u32 rsvd2[43];
u32 bridgesetting; /* bridge setting register */
u32 rsvd3[7];
struct xferstatus txst[16]; /* TX status register */
struct xferstatus rxst[16]; /* RX status register */
u32 ltssm; /* LTSSM control register */
u32 pipe; /* PIPE control register */
u32 linkcr0; /* link control 0 register */
u32 linkcr1; /* link control 1 register */
u32 rsvd6[60];
u32 mib0; /* MIB0 counter register */
u32 usblink; /* usb link control register */
u32 ltssmstate; /* LTSSM state register */
u32 linkerrorcause; /* link error cause register */
u32 rsvd7[60];
u32 devaddrtiebrkr; /* device address and tie breaker */
u32 itpinfo0; /* ITP info 0 register */
u32 itpinfo1; /* ITP info 1 register */
u32 rsvd8[61];
struct epxcr epcr[16]; /* ep control register */
u32 rsvd9[64];
u32 phyaddr; /* PHY address register */
u32 phydata; /* PHY data register */
};
/* Endpoint context structure */
struct mv_u3d_ep_context {
u32 rsvd0;
u32 rsvd1;
u32 trb_addr_lo; /* TRB address low 32 bit */
u32 trb_addr_hi; /* TRB address high 32 bit */
u32 rsvd2;
u32 rsvd3;
struct usb_ctrlrequest setup_buffer; /* setup data buffer */
};
/* TRB control data structure */
struct mv_u3d_trb_ctrl {
u32 own:1; /* owner of TRB */
u32 rsvd1:3;
u32 chain:1; /* associate this TRB with the
next TRB on the Ring */
u32 ioc:1; /* interrupt on complete */
u32 rsvd2:4;
u32 type:6; /* TRB type */
#define TYPE_NORMAL 1
#define TYPE_DATA 3
#define TYPE_LINK 6
u32 dir:1; /* Working at data stage of control endpoint
operation. 0 is OUT and 1 is IN. */
u32 rsvd3:15;
};
/* TRB data structure
* For multiple TRB, all the TRBs' physical address should be continuous.
*/
struct mv_u3d_trb_hw {
u32 buf_addr_lo; /* data buffer address low 32 bit */
u32 buf_addr_hi; /* data buffer address high 32 bit */
u32 trb_len; /* transfer length */
struct mv_u3d_trb_ctrl ctrl; /* TRB control data */
};
/* TRB structure */
struct mv_u3d_trb {
struct mv_u3d_trb_hw *trb_hw; /* point to the trb_hw structure */
dma_addr_t trb_dma; /* dma address for this trb_hw */
struct list_head trb_list; /* trb list */
};
/* device data structure */
struct mv_u3d {
struct usb_gadget gadget;
struct usb_gadget_driver *driver;
spinlock_t lock; /* device lock */
struct completion *done;
struct device *dev;
int irq;
/* usb controller registers */
struct mv_u3d_cap_regs __iomem *cap_regs;
struct mv_u3d_op_regs __iomem *op_regs;
struct mv_u3d_vuc_regs __iomem *vuc_regs;
void __iomem *phy_regs;
unsigned int max_eps;
struct mv_u3d_ep_context *ep_context;
size_t ep_context_size;
dma_addr_t ep_context_dma;
struct dma_pool *trb_pool; /* for TRB data structure */
struct mv_u3d_ep *eps;
struct mv_u3d_req *status_req; /* ep0 status request */
struct usb_ctrlrequest local_setup_buff; /* store setup data*/
unsigned int resume_state; /* USB state to resume */
unsigned int usb_state; /* USB current state */
unsigned int ep0_state; /* Endpoint zero state */
unsigned int ep0_dir;
unsigned int dev_addr; /* device address */
unsigned int errors;
unsigned softconnect:1;
unsigned vbus_active:1; /* vbus is active or not */
unsigned remote_wakeup:1; /* support remote wakeup */
unsigned clock_gating:1; /* clock gating or not */
unsigned active:1; /* udc is active or not */
unsigned vbus_valid_detect:1; /* udc vbus detection */
struct mv_usb_addon_irq *vbus;
unsigned int power;
struct clk *clk;
};
/* endpoint data structure */
struct mv_u3d_ep {
struct usb_ep ep;
struct mv_u3d *u3d;
struct list_head queue; /* ep request queued hardware */
struct list_head req_list; /* list of ep request */
struct mv_u3d_ep_context *ep_context; /* ep context */
u32 direction;
char name[14];
u32 processing; /* there is ep request
queued on haredware */
spinlock_t req_lock; /* ep lock */
unsigned wedge:1;
unsigned enabled:1;
unsigned ep_type:2;
unsigned ep_num:8;
};
/* request data structure */
struct mv_u3d_req {
struct usb_request req;
struct mv_u3d_ep *ep;
struct list_head queue; /* ep requst queued on hardware */
struct list_head list; /* ep request list */
struct list_head trb_list; /* trb list of a request */
struct mv_u3d_trb *trb_head; /* point to first trb of a request */
unsigned trb_count; /* TRB number in the chain */
unsigned chain; /* TRB chain or not */
};
#endif
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