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rockbox/firmware/target/mips/ingenic_jz47xx/usb-jz4740.c
Maurus Cuelenaere 62c4a2838e Onda VX747: 
* Overall cleanup (still needs work)
  * Add preliminary USB support
  * Add power off support
  * Add preliminary MMU handling


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18348 a1c6a512-1295-4272-9138-f99709370657
2008-08-26 21:48:49 +00:00

1037 lines
20 KiB
C
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 by Maurus Cuelenaere
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "system.h"
#include "usb_ch9.h"
#include "usb_drv.h"
#include "usb_core.h"
#include "jz4740.h"
#include "thread.h"
#if 0
#define EP1_INTR_BIT 2
#define EP_FIFO_NOEMPTY 2
#define GPIO_UDC_DETE_PIN (32 * 3 + 6)
#define GPIO_UDC_DETE GPIO_UDC_DETE_PIN
#define IRQ_GPIO_UDC_DETE (IRQ_GPIO_0 + GPIO_UDC_DETE)
#define IS_CACHE(x) (x < 0xa0000000)
bool usb_drv_connected(void)
{
return (__gpio_get_pin(GPIO_UDC_DETE)==1);
}
int usb_detect(void)
{
if(__gpio_get_pin(GPIO_UDC_DETE)==1)
return USB_INSERTED;
else
return USB_EXTRACTED;
}
void usb_init_device(void)
{
system_enable_irq(IRQ_UDC);
__gpio_as_input(GPIO_UDC_DETE_PIN);
return;
}
void usb_enable(bool on)
{
if(on)
usb_core_init();
else
usb_core_exit();
}
void usb_drv_init(void)
{
/* Set this bit to allow the UDC entering low-power mode when
* there are no actions on the USB bus.
* UDC still works during this bit was set.
*/
//__cpm_stop_udc();
__cpm_start_udc();
/* Enable the USB PHY */
REG_CPM_SCR |= CPM_SCR_USBPHY_ENABLE;
/* Disable interrupts */
REG_USB_REG_INTRINE = 0;
REG_USB_REG_INTROUTE = 0;
REG_USB_REG_INTRUSBE = 0;
/* Enable interrupts */
REG_USB_REG_INTRINE |= USB_INTR_EP0;
REG_USB_REG_INTRUSBE |= USB_INTR_RESET;
/* Enable SUSPEND */
/* usb_setb(USB_REG_POWER, USB_POWER_SUSPENDM); */
/* Enable HS Mode */
REG_USB_REG_POWER |= USB_POWER_HSENAB;
/* Let host detect UDC:
* Software must write a 1 to the PMR:USB_POWER_SOFTCONN bit to turn this
* transistor on and pull the USBDP pin HIGH.
*/
REG_USB_REG_POWER |= USB_POWER_SOFTCONN;
}
void usb_drv_exit(void)
{
/* Disable interrupts */
REG_USB_REG_INTRINE = 0;
REG_USB_REG_INTROUTE = 0;
REG_USB_REG_INTRUSBE = 0;
/* Disable DMA */
REG_USB_REG_CNTL1 = 0;
REG_USB_REG_CNTL2 = 0;
/* Disconnect from usb */
REG_USB_REG_POWER &= ~USB_POWER_SOFTCONN;
/* Disable the USB PHY */
REG_CPM_SCR &= ~CPM_SCR_USBPHY_ENABLE;
__cpm_stop_udc();
}
void usb_drv_set_address(int address)
{
REG_USB_REG_FADDR = address;
}
/* Interrupt handler */
void UDC(void)
{
}
#else
//------------------------------------------
#ifndef u8
#define u8 unsigned char
#endif
#ifndef u16
#define u16 unsigned short
#endif
#ifndef u32
#define u32 unsigned int
#endif
#ifndef s8
#define s8 char
#endif
#ifndef s16
#define s16 short
#endif
#ifndef s32
#define s32 int
#endif
extern int usbdebug;
enum USB_ENDPOINT_TYPE
{
ENDPOINT_TYPE_CONTROL,
/* Typically used to configure a device when attached to the host.
* It may also be used for other device specific purposes, including
* control of other pipes on the device.
*/
ENDPOINT_TYPE_ISOCHRONOUS,
/* Typically used for applications which need guaranteed speed.
* Isochronous transfer is fast but with possible data loss. A typical
* use is audio data which requires a constant data rate.
*/
ENDPOINT_TYPE_BULK,
/* Typically used by devices that generate or consume data in relatively
* large and bursty quantities. Bulk transfer has wide dynamic latitude
* in transmission constraints. It can use all remaining available bandwidth,
* but with no guarantees on bandwidth or latency. Since the USB bus is
* normally not very busy, there is typically 90% or more of the bandwidth
* available for USB transfers.
*/
ENDPOINT_TYPE_INTERRUPT
/* Typically used by devices that need guaranteed quick responses
* (bounded latency).
*/
};
enum USB_STANDARD_REQUEST_CODE {
GET_STATUS,
CLEAR_FEATURE,
SET_FEATURE = 3,
SET_ADDRESS = 5,
GET_DESCRIPTOR,
SET_DESCRIPTOR,
GET_CONFIGURATION,
SET_CONFIGURATION,
GET_INTERFACE,
SET_INTERFACE,
SYNCH_FRAME
};
enum USB_DESCRIPTOR_TYPE {
DEVICE_DESCRIPTOR = 1,
CONFIGURATION_DESCRIPTOR,
STRING_DESCRIPTOR,
INTERFACE_DESCRIPTOR,
ENDPOINT_DESCRIPTOR,
DEVICE_QUALIFIER_DESCRIPTOR,
OTHER_SPEED_CONFIGURATION_DESCRIPTOR,
INTERFACE_POWER1_DESCRIPTOR
};
enum USB_FEATURE_SELECTOR {
ENDPOINT_HALT,
DEVICE_REMOTE_WAKEUP,
TEST_MODE
};
enum USB_CLASS_CODE {
CLASS_DEVICE,
CLASS_AUDIO,
CLASS_COMM_AND_CDC_CONTROL,
CLASS_HID,
CLASS_PHYSICAL = 0x05,
CLASS_STILL_IMAGING,
CLASS_PRINTER,
CLASS_MASS_STORAGE,
CLASS_HUB,
CLASS_CDC_DATA,
CLASS_SMART_CARD,
CLASS_CONTENT_SECURITY = 0x0d,
CLASS_VIDEO,
CLASS_DIAGNOSTIC_DEVICE = 0xdc,
CLASS_WIRELESS_CONTROLLER = 0xe0,
CLASS_MISCELLANEOUS = 0xef,
CLASS_APP_SPECIFIC = 0xfe,
CLASS_VENDOR_SPECIFIC = 0xff
};
typedef struct {
u8 bmRequestType;
u8 bRequest;
u16 wValue;
u16 wIndex;
u16 wLength;
} __attribute__ ((packed)) USB_DeviceRequest;
typedef struct {
u8 bLength;
u8 bDescriptorType;
u16 bcdUSB;
u8 bDeviceClass;
u8 bDeviceSubClass;
u8 bDeviceProtocol;
u8 bMaxPacketSize0;
u16 idVendor;
u16 idProduct;
u16 bcdDevice;
u8 iManufacturer;
u8 iProduct;
u8 iSerialNumber;
u8 bNumConfigurations;
} __attribute__ ((packed)) USB_DeviceDescriptor;
typedef struct {
u8 bLength;
u8 bDescriptorType;
u16 bcdUSB;
u8 bDeviceClass;
u8 bDeviceSubClass;
u8 bDeviceProtocol;
u8 bMaxPacketSize0;
u8 bNumConfigurations;
u8 bReserved;
} __attribute__ ((packed)) USB_DeviceQualifierDescriptor;
typedef struct {
u8 bLength;
u8 bDescriptorType;
u16 wTotalLength;
u8 bNumInterfaces;
u8 bConfigurationValue;
u8 iConfiguration;
u8 bmAttributes;
u8 MaxPower;
} __attribute__ ((packed)) USB_ConfigDescriptor;
typedef struct {
u8 bLength;
u8 bDescriptorType;
u16 wTotalLength;
u8 bNumInterfaces;
u8 bConfigurationValue;
u8 iConfiguration;
u8 bmAttributes;
u8 bMaxPower;
} __attribute__ ((packed)) USB_OtherSpeedConfigDescriptor;
typedef struct {
u8 bLength;
u8 bDescriptorType;
u8 bInterfaceNumber;
u8 bAlternateSetting;
u8 bNumEndpoints;
u8 bInterfaceClass;
u8 bInterfaceSubClass;
u8 bInterfaceProtocol;
u8 iInterface;
} __attribute__ ((packed)) USB_InterfaceDescriptor;
typedef struct {
u8 bLegth;
u8 bDescriptorType;
u8 bEndpointAddress;
u8 bmAttributes;
u16 wMaxPacketSize;
u8 bInterval;
} __attribute__ ((packed)) USB_EndPointDescriptor;
typedef struct {
u8 bLength;
u8 bDescriptorType;
u16 SomeDesriptor[1];
} __attribute__ ((packed)) USB_StringDescriptor;
//------------------------------------------
#define MAX_EP0_SIZE 64
#define MAX_EP1_SIZE 512
#define USB_HS 0
#define USB_FS 1
#define USB_LS 2
//definitions of EP0
#define USB_EP0_IDLE 0
#define USB_EP0_RX 1
#define USB_EP0_TX 2
/* Define maximum packet size for endpoint 0 */
#define M_EP0_MAXP 64
/* Endpoint 0 status structure */
static __inline__ void usb_setb(u32 port, u8 val)
{
volatile u8 *ioport = (volatile u8 *)(port);
*ioport = (*ioport) | val;
}
static __inline__ void usb_clearb(u32 port, u8 val)
{
volatile u8 *ioport = (volatile u8 *)(port);
*ioport = (*ioport) & ~val;
}
static __inline__ void usb_setw(u32 port, u16 val)
{
volatile u16 *ioport = (volatile u16 *)(port);
*ioport = (*ioport) | val;
}
static __inline__ void usb_clearw(u32 port, u16 val)
{
volatile u16 *ioport = (volatile u16 *)(port);
*ioport = (*ioport) & ~val;
}
//---------------------------------
#define BULK_OUT_BUF_SIZE 0x20000 //buffer size :
#define BULK_IN_BUF_SIZE 0x20000 // too
enum UDC_STATE
{
IDLE,
BULK_IN,
BULK_OUT
};
enum USB_JZ4740_REQUEST //add for USB_BOOT
{
VR_GET_CUP_INFO = 0,
VR_SET_DATA_ADDERSS,
VR_SET_DATA_LENGTH,
VR_FLUSH_CACHES,
VR_PROGRAM_START1,
VR_PROGRAM_START2,
VR_NOR_OPS,
VR_NAND_OPS,
VR_SDRAM_OPS,
VR_CONFIGRATION
};
enum NOR_OPS_TYPE
{
NOR_INIT = 0,
NOR_QUERY,
NOR_WRITE,
NOR_ERASE_CHIP,
NOR_ERASE_SECTOR
};
enum NOR_FLASH_TYPE
{
NOR_AM29 = 0,
NOR_SST28,
NOR_SST39x16,
NOR_SST39x8
};
enum NAND_OPS_TYPE
{
NAND_QUERY = 0,
NAND_INIT,
NAND_MARK_BAD,
NAND_READ_OOB,
NAND_READ_RAW,
NAND_ERASE,
NAND_READ,
NAND_PROGRAM,
NAND_READ_TO_RAM
};
enum SDRAM_OPS_TYPE
{
SDRAM_LOAD,
};
enum DATA_STRUCTURE_OB
{
DS_flash_info ,
DS_hand
};
/*typedef enum _USB_BOOT_STATUS
{
USB_NO_ERR =0 ,
GET_CPU_INFO_ERR,
SET_DATA_ADDRESS_ERR,
SET_DATA_LENGTH_ERR,
FLUSH_CAHCES_ERR,
PROGRAM_START1_ERR,
PROGRAM_START2_ERR,
NOR_OPS_ERR,
NAND_OPS_ERR,
NOR_FLASHTYPE_ERR,
OPS_NOTSUPPORT_ERR
}USB_BOOT_STATUS;*/
enum OPTION
{
OOB_ECC,
OOB_NO_ECC,
NO_OOB,
};
//-------------------------
static inline void jz_writeb(u32 address, u8 value)
{
*((volatile u8 *)address) = value;
}
static inline void jz_writew(u32 address, u16 value)
{
*((volatile u16 *)address) = value;
}
static inline void jz_writel(u32 address, u32 value)
{
*((volatile u32 *)address) = value;
}
static inline u8 jz_readb(u32 address)
{
return *((volatile u8 *)address);
}
static inline u16 jz_readw(u32 address)
{
return *((volatile u16 *)address);
}
static inline u32 jz_readl(u32 address)
{
return *((volatile u32 *)address);
}
//---------------------------
#define TXFIFOEP0 USB_FIFO_EP0
u32 Bulk_in_buf[BULK_IN_BUF_SIZE];
u32 Bulk_out_buf[BULK_OUT_BUF_SIZE];
u32 Bulk_in_size,Bulk_in_finish,Bulk_out_size;
u16 handshake_PKT[4]={0,0,0,0};
u8 udc_state;
static u32 rx_buf[32];
static u32 tx_buf[32];
static u32 tx_size, rx_size, finished,fifo;
static u8 ep0state,USB_Version;
static u32 fifoaddr[] =
{
TXFIFOEP0, TXFIFOEP0+4 ,TXFIFOEP0+8
};
static u32 fifosize[] = {
MAX_EP0_SIZE, MAX_EP1_SIZE
};
static void udcReadFifo(u8 *ptr, int size)
{
u32 *d = (u32 *)ptr;
int s;
s = (size + 3) >> 2;
while (s--)
*d++ = REG32(fifo);
}
static void udcWriteFifo(u8 *ptr, int size)
{
u32 *d = (u32 *)ptr;
u8 *c;
int s, q;
if (size > 0) {
s = size >> 2;
while (s--)
REG32(fifo) = *d++;
q = size & 3;
if (q) {
c = (u8 *)d;
while (q--)
REG8(fifo) = *c++;
}
}
}
void HW_SendPKT(int ep, const u8 *buf, int size)
{
fifo = fifoaddr[ep];
if (ep!=0)
{
Bulk_in_size = size;
Bulk_in_finish = 0;
jz_writeb(USB_REG_INDEX, ep);
if (Bulk_in_size - Bulk_in_finish <= fifosize[ep])
{
udcWriteFifo((u8 *)((u32)buf+Bulk_in_finish),
Bulk_in_size - Bulk_in_finish);
usb_setb(USB_REG_INCSR, USB_INCSR_INPKTRDY);
Bulk_in_finish = Bulk_in_size;
} else
{
udcWriteFifo((u8 *)((u32)buf+Bulk_in_finish),
fifosize[ep]);
usb_setb(USB_REG_INCSR, USB_INCSR_INPKTRDY);
Bulk_in_finish += fifosize[ep];
}
}
else //EP0
{
tx_size = size;
finished = 0;
memcpy((void *)tx_buf, buf, size);
ep0state = USB_EP0_TX;
}
}
void HW_GetPKT(int ep, const u8 *buf, int size)
{
memcpy((void *)buf, (u8 *)rx_buf, size);
fifo = fifoaddr[ep];
if (rx_size > size)
rx_size -= size;
else {
size = rx_size;
rx_size = 0;
}
memcpy((u8 *)rx_buf, (u8 *)((u32)rx_buf+size), rx_size);
}
static USB_DeviceDescriptor devDesc =
{
sizeof(USB_DeviceDescriptor),
DEVICE_DESCRIPTOR, //1
0x0200, //Version 2.0
0xff, //Vendor spec class
0xff,
0xff,
64, /* Ep0 FIFO size */
0x601a, //vendor ID
0xDEAD, //Product ID
0xffff,
0x00,
0x00,
0x00,
0x01
};
#define CONFIG_DESCRIPTOR_LEN (sizeof(USB_ConfigDescriptor) + \
sizeof(USB_InterfaceDescriptor) + \
sizeof(USB_EndPointDescriptor) * 2)
static struct {
USB_ConfigDescriptor configuration_descriptor;
USB_InterfaceDescriptor interface_descritor;
USB_EndPointDescriptor endpoint_descriptor[2];
} __attribute__ ((packed)) confDesc = {
{
sizeof(USB_ConfigDescriptor),
CONFIGURATION_DESCRIPTOR,
CONFIG_DESCRIPTOR_LEN,
0x01,
0x01,
0x00,
0xc0, // Self Powered, no remote wakeup
0x64 // Maximum power consumption 2000 mA
},
{
sizeof(USB_InterfaceDescriptor),
INTERFACE_DESCRIPTOR,
0x00,
0x00,
0x02, /* ep number */
0xff,
0xff,
0xff,
0x00
},
{
{
sizeof(USB_EndPointDescriptor),
ENDPOINT_DESCRIPTOR,
(1 << 7) | 1,// endpoint 2 is IN endpoint
2, /* bulk */
512,
16
},
{
sizeof(USB_EndPointDescriptor),
ENDPOINT_DESCRIPTOR,
(0 << 7) | 1,// endpoint 5 is OUT endpoint
2, /* bulk */
512, /* OUT EP FIFO size */
16
}
}
};
void sendDevDescString(int size)
{
u16 str_ret[13] = {
0x031a,//0x1a=26 byte
0x0041,
0x0030,
0x0030,
0x0041,
0x0030,
0x0030,
0x0041,
0x0030,
0x0030,
0x0041,
0x0030,
0x0030
};
if(size >= 26)
size = 26;
str_ret[0] = (0x0300 | size);
HW_SendPKT(0, (u8 *)str_ret,size);
}
void sendDevDesc(int size)
{
switch (size) {
case 18:
HW_SendPKT(0, (u8 *)&devDesc, sizeof(devDesc));
break;
default:
HW_SendPKT(0, (u8 *)&devDesc, 8);
break;
}
}
void sendConfDesc(int size)
{
switch (size) {
case 9:
HW_SendPKT(0, (u8 *)&confDesc, 9);
break;
case 8:
HW_SendPKT(0, (u8 *)&confDesc, 8);
break;
default:
HW_SendPKT(0, (u8 *)&confDesc, sizeof(confDesc));
break;
}
}
void EP0_init(u32 out, u32 out_size, u32 in, u32 in_size)
{
confDesc.endpoint_descriptor[0].bEndpointAddress = (1<<7) | in;
confDesc.endpoint_descriptor[0].wMaxPacketSize = in_size;
confDesc.endpoint_descriptor[1].bEndpointAddress = (0<<7) | out;
confDesc.endpoint_descriptor[1].wMaxPacketSize = out_size;
}
static void udc_reset(void)
{
//data init
ep0state = USB_EP0_IDLE;
Bulk_in_size = 0;
Bulk_in_finish = 0;
Bulk_out_size = 0;
udc_state = IDLE;
tx_size = 0;
rx_size = 0;
finished = 0;
/* Enable the USB PHY */
// REG_CPM_SCR |= CPM_SCR_USBPHY_ENABLE;
/* Disable interrupts */
jz_writew(USB_REG_INTRINE, 0);
jz_writew(USB_REG_INTROUTE, 0);
jz_writeb(USB_REG_INTRUSBE, 0);
jz_writeb(USB_REG_FADDR,0);
jz_writeb(USB_REG_POWER,0x60); //High speed
jz_writeb(USB_REG_INDEX,0);
jz_writeb(USB_REG_CSR0,0xc0);
jz_writeb(USB_REG_INDEX,1);
jz_writew(USB_REG_INMAXP,512);
jz_writew(USB_REG_INCSR,0x2048);
jz_writeb(USB_REG_INDEX,1);
jz_writew(USB_REG_OUTMAXP,512);
jz_writew(USB_REG_OUTCSR,0x0090);
jz_writew(USB_REG_INTRINE,0x3); //enable intr
jz_writew(USB_REG_INTROUTE,0x2);
jz_writeb(USB_REG_INTRUSBE,0x4);
if ((jz_readb(USB_REG_POWER)&0x10)==0)
{
jz_writeb(USB_REG_INDEX,1);
jz_writew(USB_REG_INMAXP,64);
jz_writew(USB_REG_INCSR,0x2048);
jz_writeb(USB_REG_INDEX,1);
jz_writew(USB_REG_OUTMAXP,64);
jz_writew(USB_REG_OUTCSR,0x0090);
USB_Version=USB_FS;
fifosize[1]=64;
EP0_init(1,64,1,64);
}
else
{
jz_writeb(USB_REG_INDEX,1);
jz_writew(USB_REG_INMAXP,512);
jz_writew(USB_REG_INCSR,0x2048);
jz_writeb(USB_REG_INDEX,1);
jz_writew(USB_REG_OUTMAXP,512);
jz_writew(USB_REG_OUTCSR,0x0090);
USB_Version=USB_HS;
fifosize[1]=512;
EP0_init(1,512,1,512);
}
}
void usbHandleStandDevReq(u8 *buf)
{
USB_DeviceRequest *dreq = (USB_DeviceRequest *)buf;
switch (dreq->bRequest) {
case GET_DESCRIPTOR:
if (dreq->bmRequestType == 0x80) /* Dev2Host */
switch(dreq->wValue >> 8)
{
case DEVICE_DESCRIPTOR:
sendDevDesc(dreq->wLength);
break;
case CONFIGURATION_DESCRIPTOR:
sendConfDesc(dreq->wLength);
break;
case STRING_DESCRIPTOR:
if (dreq->wLength == 0x02)
HW_SendPKT(0, "\x04\x03", 2);
else
sendDevDescString(dreq->wLength);
//HW_SendPKT(0, "\x04\x03\x09\x04", 2);
break;
}
ep0state=USB_EP0_TX;
break;
case SET_ADDRESS:
jz_writeb(USB_REG_FADDR,dreq->wValue);
break;
case GET_STATUS:
switch (dreq->bmRequestType) {
case 80: /* device */
HW_SendPKT(0, "\x01\x00", 2);
break;
case 81: /* interface */
case 82: /* ep */
HW_SendPKT(0, "\x00\x00", 2);
break;
}
ep0state=USB_EP0_TX;
break;
case CLEAR_FEATURE:
case SET_CONFIGURATION:
case SET_INTERFACE:
case SET_FEATURE:
break;
}
}
extern char printfbuf[256];
int GET_CUP_INFO_Handle()
{
HW_SendPKT(0, printfbuf, 64);
udc_state = IDLE;
return 0;
}
void usbHandleVendorReq(u8 *buf)
{
int ret_state;
USB_DeviceRequest *dreq = (USB_DeviceRequest *)buf;
switch (dreq->bRequest) {
case 0xAB:
ret_state=GET_CUP_INFO_Handle();
break;
case 0x12:
HW_SendPKT(0, "TEST", 4);
udc_state = IDLE;
break;
}
}
void Handshake_PKT(void)
{
if (udc_state!=IDLE)
{
HW_SendPKT(1,(u8 *)handshake_PKT,sizeof(handshake_PKT));
udc_state = IDLE;
}
}
void usbHandleDevReq(u8 *buf)
{
switch ((buf[0] & (3 << 5)) >> 5) {
case 0: /* Standard request */
usbHandleStandDevReq(buf);
break;
case 1: /* Class request */
break;
case 2: /* Vendor request */
usbHandleVendorReq(buf);
break;
}
}
void EP0_Handler (void)
{
u8 byCSR0;
/* Read CSR0 */
jz_writeb(USB_REG_INDEX, 0);
byCSR0 = jz_readb(USB_REG_CSR0);
/* Check for SentStall
if sendtall is set ,clear the sendstall bit*/
if (byCSR0 & USB_CSR0_SENTSTALL)
{
jz_writeb(USB_REG_CSR0, (byCSR0 & ~USB_CSR0_SENDSTALL));
ep0state = USB_EP0_IDLE;
return;
}
/* Check for SetupEnd */
if (byCSR0 & USB_CSR0_SETUPEND)
{
jz_writeb(USB_REG_CSR0, (byCSR0 | USB_CSR0_SVDSETUPEND));
ep0state = USB_EP0_IDLE;
return;
}
/* Call relevant routines for endpoint 0 state */
if (ep0state == USB_EP0_IDLE)
{
if (byCSR0 & USB_CSR0_OUTPKTRDY) //There are datas in fifo
{
USB_DeviceRequest *dreq;
fifo=fifoaddr[0];
udcReadFifo((u8 *)rx_buf, sizeof(USB_DeviceRequest));
usb_setb(USB_REG_CSR0, 0x48);//clear OUTRD bit
dreq = (USB_DeviceRequest *)rx_buf;
usbHandleDevReq((u8 *)rx_buf);
}
rx_size = 0;
}
if (ep0state == USB_EP0_TX)
{
fifo=fifoaddr[0];
if (tx_size - finished <= 64)
{
udcWriteFifo((u8 *)((u32)tx_buf+finished),
tx_size - finished);
finished = tx_size;
usb_setb(USB_REG_CSR0, USB_CSR0_INPKTRDY);
usb_setb(USB_REG_CSR0, USB_CSR0_DATAEND); //Set dataend!
ep0state=USB_EP0_IDLE;
} else
{
udcWriteFifo((u8 *)((u32)tx_buf+finished), 64);
usb_setb(USB_REG_CSR0, USB_CSR0_INPKTRDY);
finished += 64;
}
}
return;
}
void EPIN_Handler(u8 EP)
{
jz_writeb(USB_REG_INDEX, EP);
fifo = fifoaddr[EP];
if (Bulk_in_size-Bulk_in_finish==0)
{
Handshake_PKT();
return;
}
if (Bulk_in_size - Bulk_in_finish <= fifosize[EP])
{
udcWriteFifo((u8 *)((u32)Bulk_in_buf+Bulk_in_finish),
Bulk_in_size - Bulk_in_finish);
usb_setw(USB_REG_INCSR, USB_INCSR_INPKTRDY);
Bulk_in_finish = Bulk_in_size;
} else
{
udcWriteFifo((u8 *)((u32)Bulk_in_buf+Bulk_in_finish),
fifosize[EP]);
usb_setw(USB_REG_INCSR, USB_INCSR_INPKTRDY);
Bulk_in_finish += fifosize[EP];
}
}
void EPOUT_Handler(u8 EP)
{
u32 size;
jz_writeb(USB_REG_INDEX, EP);
size = jz_readw(USB_REG_OUTCOUNT);
fifo = fifoaddr[EP];
udcReadFifo((u8 *)((u32)Bulk_out_buf+Bulk_out_size), size);
usb_clearb(USB_REG_OUTCSR,USB_OUTCSR_OUTPKTRDY);
Bulk_out_size += size;
}
void UDC(void)
{
u8 IntrUSB;
u16 IntrIn;
u16 IntrOut;
/* Read interrupt registers */
IntrUSB = jz_readb(USB_REG_INTRUSB);
IntrIn = jz_readw(USB_REG_INTRIN);
IntrOut = jz_readw(USB_REG_INTROUT);
if ( IntrUSB == 0 && IntrIn == 0 && IntrOut == 0)
return;
if (IntrIn & 2)
{
EPIN_Handler(1);
}
if (IntrOut & 2)
{
EPOUT_Handler(1);
}
if (IntrUSB & USB_INTR_RESET)
{
udc_reset();
}
/* Check for endpoint 0 interrupt */
if (IntrIn & USB_INTR_EP0)
{
EP0_Handler();
}
IntrIn = jz_readw(USB_REG_INTRIN);
return;
}
void __udc_start(void)
{
udc_reset();
ep0state = USB_EP0_IDLE;
Bulk_in_size = 0;
Bulk_in_finish = 0;
Bulk_out_size = 0;
udc_state = IDLE;
tx_size = 0;
rx_size = 0;
finished = 0;
if ((jz_readb(USB_REG_POWER)&0x10)==0)
{
USB_Version=USB_FS;
fifosize[1]=64;
EP0_init(1,64,1,64);
}
else
{
USB_Version=USB_HS;
fifosize[1]=512;
EP0_init(1,512,1,512);
}
USB_Version=USB_HS;
system_enable_irq(IRQ_UDC);
}
void usb_init_device(void){}
#endif
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