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/* ==========================================================================
* $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd.h $
* $Revision: #36 $
* $Date: 2008/09/26 $
* $Change: 1103515 $
*
* Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
* "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
* otherwise expressly agreed to in writing between Synopsys and you.
*
* The Software IS NOT an item of Licensed Software or Licensed Product under
* any End User Software License Agreement or Agreement for Licensed Product
* with Synopsys or any supplement thereto. You are permitted to use and
* redistribute this Software in source and binary forms, with or without
* modification, provided that redistributions of source code must retain this
* notice. You may not view, use, disclose, copy or distribute this file or
* any information contained herein except pursuant to this license grant from
* Synopsys. If you do not agree with this notice, including the disclaimer
* below, then you are not authorized to use the Software.
*
* THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
* ========================================================================== */
#ifndef DWC_HOST_ONLY
#if !defined(__DWC_PCD_H__)
#define __DWC_PCD_H__
#include <linux/types.h>
#include <linux/list.h>
#include <linux/errno.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
struct dwc_otg_device;
#include "otg_cil.h"
/**
* @file
*
* This file contains the structures, constants, and interfaces for
* the Perpherial Contoller Driver (PCD).
*
* The Peripheral Controller Driver (PCD) for Linux will implement the
* Gadget API, so that the existing Gadget drivers can be used. For
* the Mass Storage Function driver the File-backed USB Storage Gadget
* (FBS) driver will be used. The FBS driver supports the
* Control-Bulk (CB), Control-Bulk-Interrupt (CBI), and Bulk-Only
* transports.
*
*/
/** Invalid DMA Address */
#define DMA_ADDR_INVALID (~(dma_addr_t)0)
/** Maxpacket size for EP0 */
#define MAX_EP0_SIZE 64
/** Maxpacket size for any EP */
#define MAX_PACKET_SIZE 1024
/** Max Transfer size for any EP */
#define MAX_TRANSFER_SIZE 65535
/** Max DMA Descriptor count for any EP */
#define MAX_DMA_DESC_CNT 64
/**
* Get the pointer to the core_if from the pcd pointer.
*/
#define GET_CORE_IF( _pcd ) (_pcd->otg_dev->core_if)
/**
* States of EP0.
*/
typedef enum ep0_state
{
EP0_DISCONNECT, /* no host */
EP0_IDLE,
EP0_IN_DATA_PHASE,
EP0_OUT_DATA_PHASE,
EP0_IN_STATUS_PHASE,
EP0_OUT_STATUS_PHASE,
EP0_STALL,
} ep0state_e;
/** Fordward declaration.*/
struct dwc_otg_pcd;
/** DWC_otg iso request structure.
*
*/
typedef struct usb_iso_request dwc_otg_pcd_iso_request_t;
/** PCD EP structure.
* This structure describes an EP, there is an array of EPs in the PCD
* structure.
*/
typedef struct dwc_otg_pcd_ep
{
/** USB EP data */
struct usb_ep ep;
/** USB EP Descriptor */
const struct usb_endpoint_descriptor *desc;
/** queue of dwc_otg_pcd_requests. */
struct list_head queue;
unsigned stopped : 1;
unsigned disabling : 1;
unsigned dma : 1;
unsigned queue_sof : 1;
#ifdef DWC_EN_ISOC
/** DWC_otg Isochronous Transfer */
struct usb_iso_request* iso_req;
#endif //DWC_EN_ISOC
/** DWC_otg ep data. */
dwc_ep_t dwc_ep;
/** Pointer to PCD */
struct dwc_otg_pcd *pcd;
}dwc_otg_pcd_ep_t;
/** DWC_otg PCD Structure.
* This structure encapsulates the data for the dwc_otg PCD.
*/
typedef struct dwc_otg_pcd
{
/** USB gadget */
struct usb_gadget gadget;
/** USB gadget driver pointer*/
struct usb_gadget_driver *driver;
/** The DWC otg device pointer. */
struct dwc_otg_device *otg_dev;
/** State of EP0 */
ep0state_e ep0state;
/** EP0 Request is pending */
unsigned ep0_pending : 1;
/** Indicates when SET CONFIGURATION Request is in process */
unsigned request_config : 1;
/** The state of the Remote Wakeup Enable. */
unsigned remote_wakeup_enable : 1;
/** The state of the B-Device HNP Enable. */
unsigned b_hnp_enable : 1;
/** The state of A-Device HNP Support. */
unsigned a_hnp_support : 1;
/** The state of the A-Device Alt HNP support. */
unsigned a_alt_hnp_support : 1;
/** Count of pending Requests */
unsigned request_pending;
/** SETUP packet for EP0
* This structure is allocated as a DMA buffer on PCD initialization
* with enough space for up to 3 setup packets.
*/
union
{
struct usb_ctrlrequest req;
uint32_t d32[2];
} *setup_pkt;
dma_addr_t setup_pkt_dma_handle;
/** 2-byte dma buffer used to return status from GET_STATUS */
uint16_t *status_buf;
dma_addr_t status_buf_dma_handle;
/** EP0 */
dwc_otg_pcd_ep_t ep0;
/** Array of IN EPs. */
dwc_otg_pcd_ep_t in_ep[ MAX_EPS_CHANNELS - 1];
/** Array of OUT EPs. */
dwc_otg_pcd_ep_t out_ep[ MAX_EPS_CHANNELS - 1];
/** number of valid EPs in the above array. */
// unsigned num_eps : 4;
spinlock_t lock;
/** Timer for SRP. If it expires before SRP is successful
* clear the SRP. */
struct timer_list srp_timer;
/** Tasklet to defer starting of TEST mode transmissions until
* Status Phase has been completed.
*/
struct tasklet_struct test_mode_tasklet;
/** Tasklet to delay starting of xfer in DMA mode */
struct tasklet_struct *start_xfer_tasklet;
/** The test mode to enter when the tasklet is executed. */
unsigned test_mode;
} dwc_otg_pcd_t;
/** DWC_otg request structure.
* This structure is a list of requests.
*/
typedef struct
{
struct usb_request req; /**< USB Request. */
struct list_head queue; /**< queue of these requests. */
} dwc_otg_pcd_request_t;
extern int dwc_otg_pcd_init(struct platform_device *pdev);
//extern void dwc_otg_pcd_remove( struct dwc_otg_device *_otg_dev );
extern void dwc_otg_pcd_remove( struct platform_device *pdev );
extern int32_t dwc_otg_pcd_handle_intr( dwc_otg_pcd_t *pcd );
extern void dwc_otg_pcd_start_srp_timer(dwc_otg_pcd_t *pcd );
extern void dwc_otg_pcd_initiate_srp(dwc_otg_pcd_t *pcd);
extern void dwc_otg_pcd_remote_wakeup(dwc_otg_pcd_t *pcd, int set);
extern void dwc_otg_iso_buffer_done(dwc_otg_pcd_ep_t *ep, dwc_otg_pcd_iso_request_t *req);
extern void dwc_otg_request_done(dwc_otg_pcd_ep_t *_ep, dwc_otg_pcd_request_t *req,
int status);
extern void dwc_otg_request_nuke(dwc_otg_pcd_ep_t *_ep);
extern void dwc_otg_pcd_update_otg(dwc_otg_pcd_t *_pcd,
const unsigned reset);
#ifndef VERBOSE
#define VERIFY_PCD_DMA_ADDR(_addr_) BUG_ON(((_addr_)==DMA_ADDR_INVALID)||\
((_addr_)==0)||\
((_addr_)&0x3))
#else
#define VERIFY_PCD_DMA_ADDR(_addr_) {\
if(((_addr_)==DMA_ADDR_INVALID)||\
((_addr_)==0)||\
((_addr_)&0x3)) {\
printk("%s: Invalid DMA address "#_addr_"(%.8x)\n",__func__,_addr_);\
BUG();\
}\
}
#endif
static inline void ep_check_and_patch_dma_addr(dwc_otg_pcd_ep_t *ep){
//void ep_check_and_patch_dma_addr(dwc_otg_pcd_ep_t *ep){
dwc_ep_t *dwc_ep=&ep->dwc_ep;
DWC_DEBUGPL(DBG_PCDV,"%s: dwc_ep xfer_buf=%.8x, total_len=%d, dma_addr=%.8x\n",__func__,(u32)dwc_ep->xfer_buff,(dwc_ep->total_len),dwc_ep->dma_addr);
if (/*(core_if->dma_enable)&&*/(dwc_ep->dma_addr==DMA_ADDR_INVALID)) {
if((((u32)dwc_ep->xfer_buff)&0x3)==0){
dwc_ep->dma_addr=dma_map_single(NULL,(void *)(dwc_ep->start_xfer_buff),(dwc_ep->total_len), DMA_TO_DEVICE);
DWC_DEBUGPL(DBG_PCDV," got dma_addr=%.8x\n",dwc_ep->dma_addr);
}else{
DWC_DEBUGPL(DBG_PCDV," buf not aligned, use aligned_buf instead. xfer_buf=%.8x, total_len=%d, aligned_buf_size=%d\n",(u32)dwc_ep->xfer_buff,(dwc_ep->total_len),dwc_ep->aligned_buf_size);
if(dwc_ep->aligned_buf_size<dwc_ep->total_len){
if(dwc_ep->aligned_buf){
//printk(" free buff dwc_ep aligned_buf_size=%d, aligned_buf(%.8x), aligned_dma_addr(%.8x));\n",dwc_ep->aligned_buf_size,dwc_ep->aligned_buf,dwc_ep->aligned_dma_addr);
//dma_free_coherent(NULL,dwc_ep->aligned_buf_size,dwc_ep->aligned_buf,dwc_ep->aligned_dma_addr);
kfree(dwc_ep->aligned_buf);
}
dwc_ep->aligned_buf_size=((1<<20)>(dwc_ep->total_len<<1))?(dwc_ep->total_len<<1):(1<<20);
//dwc_ep->aligned_buf = dma_alloc_coherent (NULL, dwc_ep->aligned_buf_size, &dwc_ep->aligned_dma_addr, GFP_KERNEL|GFP_DMA);
dwc_ep->aligned_buf=kmalloc(dwc_ep->aligned_buf_size,GFP_KERNEL|GFP_DMA|GFP_ATOMIC);
dwc_ep->aligned_dma_addr=dma_map_single(NULL,(void *)(dwc_ep->aligned_buf),(dwc_ep->aligned_buf_size),DMA_FROM_DEVICE);
if(!dwc_ep->aligned_buf){
DWC_ERROR("Cannot alloc required buffer!!\n");
BUG();
}
DWC_DEBUGPL(DBG_PCDV," dwc_ep allocated aligned buf=%.8x, dma_addr=%.8x, size=%d(0x%x)\n", (u32)dwc_ep->aligned_buf, dwc_ep->aligned_dma_addr, dwc_ep->aligned_buf_size, dwc_ep->aligned_buf_size);
}
dwc_ep->dma_addr=dwc_ep->aligned_dma_addr;
if(dwc_ep->is_in) {
memcpy(dwc_ep->aligned_buf,dwc_ep->xfer_buff,dwc_ep->total_len);
dma_sync_single_for_device(NULL,dwc_ep->dma_addr,dwc_ep->total_len,DMA_TO_DEVICE);
}
}
}
}
#endif
#endif /* DWC_HOST_ONLY */
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