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/*
* Copyright (C) 2006 Bryan O'Donoghue, CodeHermit
* bodonoghue@codehermit.ie
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <commproc.h>
/* Mode Register */
#define USMOD_EN 0x01
#define USMOD_HOST 0x02
#define USMOD_TEST 0x04
#define USMOD_SFTE 0x08
#define USMOD_RESUME 0x40
#define USMOD_LSS 0x80
/* Endpoint Registers */
#define USEP_RHS_NORM 0x00
#define USEP_RHS_IGNORE 0x01
#define USEP_RHS_NAK 0x02
#define USEP_RHS_STALL 0x03
#define USEP_THS_NORM 0x00
#define USEP_THS_IGNORE 0x04
#define USEP_THS_NAK 0x08
#define USEP_THS_STALL 0x0C
#define USEP_RTE 0x10
#define USEP_MF 0x20
#define USEP_TM_CONTROL 0x00
#define USEP_TM_INT 0x100
#define USEP_TM_BULK 0x200
#define USEP_TM_ISO 0x300
/* Command Register */
#define USCOM_EP0 0x00
#define USCOM_EP1 0x01
#define USCOM_EP2 0x02
#define USCOM_EP3 0x03
#define USCOM_FLUSH 0x40
#define USCOM_STR 0x80
/* Event Register */
#define USB_E_RXB 0x0001
#define USB_E_TXB 0x0002
#define USB_E_BSY 0x0004
#define USB_E_SOF 0x0008
#define USB_E_TXE1 0x0010
#define USB_E_TXE2 0x0020
#define USB_E_TXE3 0x0040
#define USB_E_TXE4 0x0080
#define USB_TX_ERRMASK (USB_E_TXE1|USB_E_TXE2|USB_E_TXE3|USB_E_TXE4)
#define USB_E_IDLE 0x0100
#define USB_E_RESET 0x0200
/* Mask Register */
#define USBS_IDLE 0x01
/* RX Buffer Descriptor */
#define RX_BD_OV 0x02
#define RX_BD_CR 0x04
#define RX_BD_AB 0x08
#define RX_BD_NO 0x10
#define RX_BD_PID_DATA0 0x00
#define RX_BD_PID_DATA1 0x40
#define RX_BD_PID_SETUP 0x80
#define RX_BD_F 0x400
#define RX_BD_L 0x800
#define RX_BD_I 0x1000
#define RX_BD_W 0x2000
#define RX_BD_E 0x8000
/* Useful masks */
#define RX_BD_PID_BITMASK (RX_BD_PID_DATA1 | RX_BD_PID_SETUP)
#define STALL_BITMASK (USEP_THS_STALL | USEP_RHS_STALL)
#define NAK_BITMASK (USEP_THS_NAK | USEP_RHS_NAK)
#define CBD_TX_BITMASK (TX_BD_R | TX_BD_L | TX_BD_TC | TX_BD_I | TX_BD_CNF)
/* TX Buffer Descriptor */
#define TX_BD_UN 0x02
#define TX_BD_TO 0x04
#define TX_BD_NO_PID 0x00
#define TX_BD_PID_DATA0 0x80
#define TX_BD_PID_DATA1 0xC0
#define TX_BD_CNF 0x200
#define TX_BD_TC 0x400
#define TX_BD_L 0x800
#define TX_BD_I 0x1000
#define TX_BD_W 0x2000
#define TX_BD_R 0x8000
/* Implementation specific defines */
#define EP_MIN_PACKET_SIZE 0x08
#define MAX_ENDPOINTS 0x04
#define FIFO_SIZE 0x10
#define EP_MAX_PKT FIFO_SIZE
#define TX_RING_SIZE 0x04
#define RX_RING_SIZE 0x06
#define USB_MAX_PKT 0x40
#define TOGGLE_TX_PID(x) x= ((~x)&0x40)|0x80
#define TOGGLE_RX_PID(x) x^= 0x40
#define EP_ATTACHED 0x01 /* Endpoint has a urb attached or not */
#define EP_SEND_ZLP 0x02 /* Send ZLP y/n ? */
#define PROFF_USB 0x00000000
#define CPM_USB_BASE 0x00000A00
/* UDC device defines */
#define EP0_MAX_PACKET_SIZE EP_MAX_PKT
#define UDC_OUT_ENDPOINT 0x02
#define UDC_OUT_PACKET_SIZE EP_MIN_PACKET_SIZE
#define UDC_IN_ENDPOINT 0x03
#define UDC_IN_PACKET_SIZE EP_MIN_PACKET_SIZE
#define UDC_INT_ENDPOINT 0x01
#define UDC_INT_PACKET_SIZE UDC_IN_PACKET_SIZE
#define UDC_BULK_PACKET_SIZE EP_MIN_PACKET_SIZE
struct mpc8xx_ep {
struct urb * urb;
unsigned char pid;
unsigned char sc;
volatile cbd_t * prx;
};
typedef struct mpc8xx_usb{
char usmod; /* Mode Register */
char usaddr; /* Slave Address Register */
char uscom; /* Command Register */
char res1; /* Reserved */
ushort usep[4];
ulong res2; /* Reserved */
ushort usber; /* Event Register */
ushort res3; /* Reserved */
ushort usbmr; /* Mask Register */
char res4; /* Reserved */
char usbs; /* Status Register */
char res5[8]; /* Reserved */
}usb_t;
typedef struct mpc8xx_parameter_ram{
ushort ep0ptr; /* Endpoint Pointer Register 0 */
ushort ep1ptr; /* Endpoint Pointer Register 1 */
ushort ep2ptr; /* Endpoint Pointer Register 2 */
ushort ep3ptr; /* Endpoint Pointer Register 3 */
uint rstate; /* Receive state */
uint rptr; /* Receive internal data pointer */
ushort frame_n; /* Frame number */
ushort rbcnt; /* Receive byte count */
uint rtemp; /* Receive temp cp use only */
uint rxusb; /* Rx Data Temp */
ushort rxuptr; /* Rx microcode return address temp */
}usb_pram_t;
typedef struct endpoint_parameter_block_pointer{
ushort rbase; /* RxBD base address */
ushort tbase; /* TxBD base address */
char rfcr; /* Rx Function code */
char tfcr; /* Tx Function code */
ushort mrblr; /* Maximum Receive Buffer Length */
ushort rbptr; /* RxBD pointer Next Buffer Descriptor */
ushort tbptr; /* TxBD pointer Next Buffer Descriptor */
ulong tstate; /* Transmit internal state */
ulong tptr; /* Transmit internal data pointer */
ushort tcrc; /* Transmit temp CRC */
ushort tbcnt; /* Transmit internal bye count */
ulong ttemp; /* Tx temp */
ushort txuptr; /* Tx microcode return address */
ushort res1; /* Reserved */
}usb_epb_t;
typedef enum mpc8xx_udc_state{
STATE_NOT_READY,
STATE_ERROR,
STATE_READY,
}mpc8xx_udc_state_t;
/* Declarations */
int udc_init(void);
void udc_irq(void);
int udc_endpoint_write(struct usb_endpoint_instance *endpoint);
void udc_setup_ep(struct usb_device_instance *device, unsigned int ep,
struct usb_endpoint_instance *endpoint);
void udc_connect(void);
void udc_disconnect(void);
void udc_enable(struct usb_device_instance *device);
void udc_disable(void);
void udc_startup_events(struct usb_device_instance *device);
/* Flow control */
void udc_set_nak(int epid);
void udc_unset_nak (int epid);
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