266 lines
8.3 KiB
C
266 lines
8.3 KiB
C
|
/*
|
||
|
|
* Internal header file for UCC FAST unit routines.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2006 Freescale Semiconductor, Inc. All rights reserved.
|
||
|
|
*
|
||
|
|
* Authors: Shlomi Gridish <gridish@freescale.com>
|
||
|
|
* Li Yang <leoli@freescale.com>
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
#ifndef __UCC_FAST_H__
|
||
|
|
#define __UCC_FAST_H__
|
||
|
|
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
|
||
|
|
#include <soc/fsl/qe/immap_qe.h>
|
||
|
|
#include <soc/fsl/qe/qe.h>
|
||
|
|
|
||
|
|
#include <soc/fsl/qe/ucc.h>
|
||
|
|
|
||
|
|
/* Receive BD's status and length*/
|
||
|
|
#define R_E 0x80000000 /* buffer empty */
|
||
|
|
#define R_W 0x20000000 /* wrap bit */
|
||
|
|
#define R_I 0x10000000 /* interrupt on reception */
|
||
|
|
#define R_L 0x08000000 /* last */
|
||
|
|
#define R_F 0x04000000 /* first */
|
||
|
|
|
||
|
|
/* transmit BD's status and length*/
|
||
|
|
#define T_R 0x80000000 /* ready bit */
|
||
|
|
#define T_W 0x20000000 /* wrap bit */
|
||
|
|
#define T_I 0x10000000 /* interrupt on completion */
|
||
|
|
#define T_L 0x08000000 /* last */
|
||
|
|
|
||
|
|
/* Receive BD's status */
|
||
|
|
#define R_E_S 0x8000 /* buffer empty */
|
||
|
|
#define R_W_S 0x2000 /* wrap bit */
|
||
|
|
#define R_I_S 0x1000 /* interrupt on reception */
|
||
|
|
#define R_L_S 0x0800 /* last */
|
||
|
|
#define R_F_S 0x0400 /* first */
|
||
|
|
#define R_CM_S 0x0200 /* continuous mode */
|
||
|
|
#define R_CR_S 0x0004 /* crc */
|
||
|
|
#define R_OV_S 0x0002 /* crc */
|
||
|
|
|
||
|
|
/* transmit BD's status */
|
||
|
|
#define T_R_S 0x8000 /* ready bit */
|
||
|
|
#define T_W_S 0x2000 /* wrap bit */
|
||
|
|
#define T_I_S 0x1000 /* interrupt on completion */
|
||
|
|
#define T_L_S 0x0800 /* last */
|
||
|
|
#define T_TC_S 0x0400 /* crc */
|
||
|
|
#define T_TM_S 0x0200 /* continuous mode */
|
||
|
|
|
||
|
|
/* Rx Data buffer must be 4 bytes aligned in most cases */
|
||
|
|
#define UCC_FAST_RX_ALIGN 4
|
||
|
|
#define UCC_FAST_MRBLR_ALIGNMENT 4
|
||
|
|
#define UCC_FAST_VIRT_FIFO_REGS_ALIGNMENT 8
|
||
|
|
|
||
|
|
/* Sizes */
|
||
|
|
#define UCC_FAST_URFS_MIN_VAL 0x88
|
||
|
|
#define UCC_FAST_RECEIVE_VIRTUAL_FIFO_SIZE_FUDGE_FACTOR 8
|
||
|
|
|
||
|
|
/* ucc_fast_channel_protocol_mode - UCC FAST mode */
|
||
|
|
enum ucc_fast_channel_protocol_mode {
|
||
|
|
UCC_FAST_PROTOCOL_MODE_HDLC = 0x00000000,
|
||
|
|
UCC_FAST_PROTOCOL_MODE_RESERVED01 = 0x00000001,
|
||
|
|
UCC_FAST_PROTOCOL_MODE_RESERVED_QMC = 0x00000002,
|
||
|
|
UCC_FAST_PROTOCOL_MODE_RESERVED02 = 0x00000003,
|
||
|
|
UCC_FAST_PROTOCOL_MODE_RESERVED_UART = 0x00000004,
|
||
|
|
UCC_FAST_PROTOCOL_MODE_RESERVED03 = 0x00000005,
|
||
|
|
UCC_FAST_PROTOCOL_MODE_RESERVED_EX_MAC_1 = 0x00000006,
|
||
|
|
UCC_FAST_PROTOCOL_MODE_RESERVED_EX_MAC_2 = 0x00000007,
|
||
|
|
UCC_FAST_PROTOCOL_MODE_RESERVED_BISYNC = 0x00000008,
|
||
|
|
UCC_FAST_PROTOCOL_MODE_RESERVED04 = 0x00000009,
|
||
|
|
UCC_FAST_PROTOCOL_MODE_ATM = 0x0000000A,
|
||
|
|
UCC_FAST_PROTOCOL_MODE_RESERVED05 = 0x0000000B,
|
||
|
|
UCC_FAST_PROTOCOL_MODE_ETHERNET = 0x0000000C,
|
||
|
|
UCC_FAST_PROTOCOL_MODE_RESERVED06 = 0x0000000D,
|
||
|
|
UCC_FAST_PROTOCOL_MODE_POS = 0x0000000E,
|
||
|
|
UCC_FAST_PROTOCOL_MODE_RESERVED07 = 0x0000000F
|
||
|
|
};
|
||
|
|
|
||
|
|
/* ucc_fast_transparent_txrx - UCC Fast Transparent TX & RX */
|
||
|
|
enum ucc_fast_transparent_txrx {
|
||
|
|
UCC_FAST_GUMR_TRANSPARENT_TTX_TRX_NORMAL = 0x00000000,
|
||
|
|
UCC_FAST_GUMR_TRANSPARENT_TTX_TRX_TRANSPARENT = 0x18000000
|
||
|
|
};
|
||
|
|
|
||
|
|
/* UCC fast diagnostic mode */
|
||
|
|
enum ucc_fast_diag_mode {
|
||
|
|
UCC_FAST_DIAGNOSTIC_NORMAL = 0x0,
|
||
|
|
UCC_FAST_DIAGNOSTIC_LOCAL_LOOP_BACK = 0x40000000,
|
||
|
|
UCC_FAST_DIAGNOSTIC_AUTO_ECHO = 0x80000000,
|
||
|
|
UCC_FAST_DIAGNOSTIC_LOOP_BACK_AND_ECHO = 0xC0000000
|
||
|
|
};
|
||
|
|
|
||
|
|
/* UCC fast Sync length (transparent mode only) */
|
||
|
|
enum ucc_fast_sync_len {
|
||
|
|
UCC_FAST_SYNC_LEN_NOT_USED = 0x0,
|
||
|
|
UCC_FAST_SYNC_LEN_AUTOMATIC = 0x00004000,
|
||
|
|
UCC_FAST_SYNC_LEN_8_BIT = 0x00008000,
|
||
|
|
UCC_FAST_SYNC_LEN_16_BIT = 0x0000C000
|
||
|
|
};
|
||
|
|
|
||
|
|
/* UCC fast RTS mode */
|
||
|
|
enum ucc_fast_ready_to_send {
|
||
|
|
UCC_FAST_SEND_IDLES_BETWEEN_FRAMES = 0x00000000,
|
||
|
|
UCC_FAST_SEND_FLAGS_BETWEEN_FRAMES = 0x00002000
|
||
|
|
};
|
||
|
|
|
||
|
|
/* UCC fast receiver decoding mode */
|
||
|
|
enum ucc_fast_rx_decoding_method {
|
||
|
|
UCC_FAST_RX_ENCODING_NRZ = 0x00000000,
|
||
|
|
UCC_FAST_RX_ENCODING_NRZI = 0x00000800,
|
||
|
|
UCC_FAST_RX_ENCODING_RESERVED0 = 0x00001000,
|
||
|
|
UCC_FAST_RX_ENCODING_RESERVED1 = 0x00001800
|
||
|
|
};
|
||
|
|
|
||
|
|
/* UCC fast transmitter encoding mode */
|
||
|
|
enum ucc_fast_tx_encoding_method {
|
||
|
|
UCC_FAST_TX_ENCODING_NRZ = 0x00000000,
|
||
|
|
UCC_FAST_TX_ENCODING_NRZI = 0x00000100,
|
||
|
|
UCC_FAST_TX_ENCODING_RESERVED0 = 0x00000200,
|
||
|
|
UCC_FAST_TX_ENCODING_RESERVED1 = 0x00000300
|
||
|
|
};
|
||
|
|
|
||
|
|
/* UCC fast CRC length */
|
||
|
|
enum ucc_fast_transparent_tcrc {
|
||
|
|
UCC_FAST_16_BIT_CRC = 0x00000000,
|
||
|
|
UCC_FAST_CRC_RESERVED0 = 0x00000040,
|
||
|
|
UCC_FAST_32_BIT_CRC = 0x00000080,
|
||
|
|
UCC_FAST_CRC_RESERVED1 = 0x000000C0
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Fast UCC initialization structure */
|
||
|
|
struct ucc_fast_info {
|
||
|
|
int ucc_num;
|
||
|
|
int tdm_num;
|
||
|
|
enum qe_clock rx_clock;
|
||
|
|
enum qe_clock tx_clock;
|
||
|
|
enum qe_clock rx_sync;
|
||
|
|
enum qe_clock tx_sync;
|
||
|
|
resource_size_t regs;
|
||
|
|
int irq;
|
||
|
|
u32 uccm_mask;
|
||
|
|
int bd_mem_part;
|
||
|
|
int brkpt_support;
|
||
|
|
int grant_support;
|
||
|
|
int tsa;
|
||
|
|
int cdp;
|
||
|
|
int cds;
|
||
|
|
int ctsp;
|
||
|
|
int ctss;
|
||
|
|
int tci;
|
||
|
|
int txsy;
|
||
|
|
int rtsm;
|
||
|
|
int revd;
|
||
|
|
int rsyn;
|
||
|
|
u16 max_rx_buf_length;
|
||
|
|
u16 urfs;
|
||
|
|
u16 urfet;
|
||
|
|
u16 urfset;
|
||
|
|
u16 utfs;
|
||
|
|
u16 utfet;
|
||
|
|
u16 utftt;
|
||
|
|
u16 ufpt;
|
||
|
|
enum ucc_fast_channel_protocol_mode mode;
|
||
|
|
enum ucc_fast_transparent_txrx ttx_trx;
|
||
|
|
enum ucc_fast_tx_encoding_method tenc;
|
||
|
|
enum ucc_fast_rx_decoding_method renc;
|
||
|
|
enum ucc_fast_transparent_tcrc tcrc;
|
||
|
|
enum ucc_fast_sync_len synl;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct ucc_fast_private {
|
||
|
|
struct ucc_fast_info *uf_info;
|
||
|
|
struct ucc_fast __iomem *uf_regs; /* a pointer to the UCC regs. */
|
||
|
|
u32 __iomem *p_ucce; /* a pointer to the event register in memory. */
|
||
|
|
u32 __iomem *p_uccm; /* a pointer to the mask register in memory. */
|
||
|
|
#ifdef CONFIG_UGETH_TX_ON_DEMAND
|
||
|
|
u16 __iomem *p_utodr; /* pointer to the transmit on demand register */
|
||
|
|
#endif
|
||
|
|
int enabled_tx; /* Whether channel is enabled for Tx (ENT) */
|
||
|
|
int enabled_rx; /* Whether channel is enabled for Rx (ENR) */
|
||
|
|
int stopped_tx; /* Whether channel has been stopped for Tx
|
||
|
|
(STOP_TX, etc.) */
|
||
|
|
int stopped_rx; /* Whether channel has been stopped for Rx */
|
||
|
|
u32 ucc_fast_tx_virtual_fifo_base_offset;/* pointer to base of Tx
|
||
|
|
virtual fifo */
|
||
|
|
u32 ucc_fast_rx_virtual_fifo_base_offset;/* pointer to base of Rx
|
||
|
|
virtual fifo */
|
||
|
|
#ifdef STATISTICS
|
||
|
|
u32 tx_frames; /* Transmitted frames counter. */
|
||
|
|
u32 rx_frames; /* Received frames counter (only frames
|
||
|
|
passed to application). */
|
||
|
|
u32 tx_discarded; /* Discarded tx frames counter (frames that
|
||
|
|
were discarded by the driver due to errors).
|
||
|
|
*/
|
||
|
|
u32 rx_discarded; /* Discarded rx frames counter (frames that
|
||
|
|
were discarded by the driver due to errors).
|
||
|
|
*/
|
||
|
|
#endif /* STATISTICS */
|
||
|
|
u16 mrblr; /* maximum receive buffer length */
|
||
|
|
};
|
||
|
|
|
||
|
|
/* ucc_fast_init
|
||
|
|
* Initializes Fast UCC according to user provided parameters.
|
||
|
|
*
|
||
|
|
* uf_info - (In) pointer to the fast UCC info structure.
|
||
|
|
* uccf_ret - (Out) pointer to the fast UCC structure.
|
||
|
|
*/
|
||
|
|
int ucc_fast_init(struct ucc_fast_info * uf_info, struct ucc_fast_private ** uccf_ret);
|
||
|
|
|
||
|
|
/* ucc_fast_free
|
||
|
|
* Frees all resources for fast UCC.
|
||
|
|
*
|
||
|
|
* uccf - (In) pointer to the fast UCC structure.
|
||
|
|
*/
|
||
|
|
void ucc_fast_free(struct ucc_fast_private * uccf);
|
||
|
|
|
||
|
|
/* ucc_fast_enable
|
||
|
|
* Enables a fast UCC port.
|
||
|
|
* This routine enables Tx and/or Rx through the General UCC Mode Register.
|
||
|
|
*
|
||
|
|
* uccf - (In) pointer to the fast UCC structure.
|
||
|
|
* mode - (In) TX, RX, or both.
|
||
|
|
*/
|
||
|
|
void ucc_fast_enable(struct ucc_fast_private * uccf, enum comm_dir mode);
|
||
|
|
|
||
|
|
/* ucc_fast_disable
|
||
|
|
* Disables a fast UCC port.
|
||
|
|
* This routine disables Tx and/or Rx through the General UCC Mode Register.
|
||
|
|
*
|
||
|
|
* uccf - (In) pointer to the fast UCC structure.
|
||
|
|
* mode - (In) TX, RX, or both.
|
||
|
|
*/
|
||
|
|
void ucc_fast_disable(struct ucc_fast_private * uccf, enum comm_dir mode);
|
||
|
|
|
||
|
|
/* ucc_fast_irq
|
||
|
|
* Handles interrupts on fast UCC.
|
||
|
|
* Called from the general interrupt routine to handle interrupts on fast UCC.
|
||
|
|
*
|
||
|
|
* uccf - (In) pointer to the fast UCC structure.
|
||
|
|
*/
|
||
|
|
void ucc_fast_irq(struct ucc_fast_private * uccf);
|
||
|
|
|
||
|
|
/* ucc_fast_transmit_on_demand
|
||
|
|
* Immediately forces a poll of the transmitter for data to be sent.
|
||
|
|
* Typically, the hardware performs a periodic poll for data that the
|
||
|
|
* transmit routine has set up to be transmitted. In cases where
|
||
|
|
* this polling cycle is not soon enough, this optional routine can
|
||
|
|
* be invoked to force a poll right away, instead. Proper use for
|
||
|
|
* each transmission for which this functionality is desired is to
|
||
|
|
* call the transmit routine and then this routine right after.
|
||
|
|
*
|
||
|
|
* uccf - (In) pointer to the fast UCC structure.
|
||
|
|
*/
|
||
|
|
void ucc_fast_transmit_on_demand(struct ucc_fast_private * uccf);
|
||
|
|
|
||
|
|
u32 ucc_fast_get_qe_cr_subblock(int uccf_num);
|
||
|
|
|
||
|
|
void ucc_fast_dump_regs(struct ucc_fast_private * uccf);
|
||
|
|
|
||
|
|
#endif /* __UCC_FAST_H__ */
|