[linux-2.6-block.git] / arch / powerpc / include / asm / ucc_fast.h

/*
 * Internal header file for UCC FAST unit routines.
 *
 * Copyright (C) 2006 Freescale Semicondutor, 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 <asm/immap_qe.h>
#include <asm/qe.h>

#include <asm/ucc.h>

/* Receive BD's status */
#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 */
#define T_R	0x80000000	/* ready bit */
#define T_W	0x20000000	/* wrap bit */
#define T_I	0x10000000	/* interrupt on completion */
#define T_L	0x08000000	/* last */

/* 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;
	enum qe_clock rx_clock;
	enum qe_clock tx_clock;
	u32 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__ */
Commit	Line	Data
98658538	1	/*
98658538 LY	2	* Internal header file for UCC FAST unit routines.
	3	*
	4	* Copyright (C) 2006 Freescale Semicondutor, Inc. All rights reserved.
	5	*
	6	* Authors: Shlomi Gridish <gridish@freescale.com>
	7	* Li Yang <leoli@freescale.com>
	8	*
	9	* This program is free software; you can redistribute it and/or modify it
	10	* under the terms of the GNU General Public License as published by the
	11	* Free Software Foundation; either version 2 of the License, or (at your
	12	* option) any later version.
	13	*/
	14	#ifndef __UCC_FAST_H__
	15	#define __UCC_FAST_H__
	16
	17	#include <linux/kernel.h>
	18
	19	#include <asm/immap_qe.h>
	20	#include <asm/qe.h>
	21
a1ce3928	22	#include <asm/ucc.h>
98658538 LY	23
	24	/* Receive BD's status */
	25	#define R_E 0x80000000 /* buffer empty */
	26	#define R_W 0x20000000 /* wrap bit */
	27	#define R_I 0x10000000 /* interrupt on reception */
	28	#define R_L 0x08000000 /* last */
	29	#define R_F 0x04000000 /* first */
	30
	31	/* transmit BD's status */
	32	#define T_R 0x80000000 /* ready bit */
	33	#define T_W 0x20000000 /* wrap bit */
	34	#define T_I 0x10000000 /* interrupt on completion */
	35	#define T_L 0x08000000 /* last */
	36
	37	/* Rx Data buffer must be 4 bytes aligned in most cases */
	38	#define UCC_FAST_RX_ALIGN 4
	39	#define UCC_FAST_MRBLR_ALIGNMENT 4
	40	#define UCC_FAST_VIRT_FIFO_REGS_ALIGNMENT 8
	41
	42	/* Sizes */
	43	#define UCC_FAST_URFS_MIN_VAL 0x88
	44	#define UCC_FAST_RECEIVE_VIRTUAL_FIFO_SIZE_FUDGE_FACTOR 8
	45
	46	/* ucc_fast_channel_protocol_mode - UCC FAST mode */
	47	enum ucc_fast_channel_protocol_mode {
	48	UCC_FAST_PROTOCOL_MODE_HDLC = 0x00000000,
	49	UCC_FAST_PROTOCOL_MODE_RESERVED01 = 0x00000001,
	50	UCC_FAST_PROTOCOL_MODE_RESERVED_QMC = 0x00000002,
	51	UCC_FAST_PROTOCOL_MODE_RESERVED02 = 0x00000003,
	52	UCC_FAST_PROTOCOL_MODE_RESERVED_UART = 0x00000004,
	53	UCC_FAST_PROTOCOL_MODE_RESERVED03 = 0x00000005,
	54	UCC_FAST_PROTOCOL_MODE_RESERVED_EX_MAC_1 = 0x00000006,
	55	UCC_FAST_PROTOCOL_MODE_RESERVED_EX_MAC_2 = 0x00000007,
	56	UCC_FAST_PROTOCOL_MODE_RESERVED_BISYNC = 0x00000008,
	57	UCC_FAST_PROTOCOL_MODE_RESERVED04 = 0x00000009,
	58	UCC_FAST_PROTOCOL_MODE_ATM = 0x0000000A,
	59	UCC_FAST_PROTOCOL_MODE_RESERVED05 = 0x0000000B,
	60	UCC_FAST_PROTOCOL_MODE_ETHERNET = 0x0000000C,
	61	UCC_FAST_PROTOCOL_MODE_RESERVED06 = 0x0000000D,
	62	UCC_FAST_PROTOCOL_MODE_POS = 0x0000000E,
	63	UCC_FAST_PROTOCOL_MODE_RESERVED07 = 0x0000000F
	64	};
	65
	66	/* ucc_fast_transparent_txrx - UCC Fast Transparent TX & RX */
	67	enum ucc_fast_transparent_txrx {
	68	UCC_FAST_GUMR_TRANSPARENT_TTX_TRX_NORMAL = 0x00000000,
	69	UCC_FAST_GUMR_TRANSPARENT_TTX_TRX_TRANSPARENT = 0x18000000
	70	};
	71
	72	/* UCC fast diagnostic mode */
	73	enum ucc_fast_diag_mode {
	74	UCC_FAST_DIAGNOSTIC_NORMAL = 0x0,
	75	UCC_FAST_DIAGNOSTIC_LOCAL_LOOP_BACK = 0x40000000,
	76	UCC_FAST_DIAGNOSTIC_AUTO_ECHO = 0x80000000,
	77	UCC_FAST_DIAGNOSTIC_LOOP_BACK_AND_ECHO = 0xC0000000
	78	};
	79
	80	/* UCC fast Sync length (transparent mode only) */
	81	enum ucc_fast_sync_len {
	82	UCC_FAST_SYNC_LEN_NOT_USED = 0x0,
	83	UCC_FAST_SYNC_LEN_AUTOMATIC = 0x00004000,
	84	UCC_FAST_SYNC_LEN_8_BIT = 0x00008000,
	85	UCC_FAST_SYNC_LEN_16_BIT = 0x0000C000
	86	};
87
88	/* UCC fast RTS mode */
89	enum ucc_fast_ready_to_send {
90	UCC_FAST_SEND_IDLES_BETWEEN_FRAMES = 0x00000000,
91	UCC_FAST_SEND_FLAGS_BETWEEN_FRAMES = 0x00002000
92	};
93
94	/* UCC fast receiver decoding mode */
95	enum ucc_fast_rx_decoding_method {
96	UCC_FAST_RX_ENCODING_NRZ = 0x00000000,
97	UCC_FAST_RX_ENCODING_NRZI = 0x00000800,
98	UCC_FAST_RX_ENCODING_RESERVED0 = 0x00001000,
99	UCC_FAST_RX_ENCODING_RESERVED1 = 0x00001800
100	};
101
102	/* UCC fast transmitter encoding mode */
103	enum ucc_fast_tx_encoding_method {
104	UCC_FAST_TX_ENCODING_NRZ = 0x00000000,
105	UCC_FAST_TX_ENCODING_NRZI = 0x00000100,
106	UCC_FAST_TX_ENCODING_RESERVED0 = 0x00000200,
107	UCC_FAST_TX_ENCODING_RESERVED1 = 0x00000300
108	};
109
110	/* UCC fast CRC length */
111	enum ucc_fast_transparent_tcrc {
112	UCC_FAST_16_BIT_CRC = 0x00000000,
113	UCC_FAST_CRC_RESERVED0 = 0x00000040,
114	UCC_FAST_32_BIT_CRC = 0x00000080,
115	UCC_FAST_CRC_RESERVED1 = 0x000000C0
116	};
117
118	/* Fast UCC initialization structure */
119	struct ucc_fast_info {
120	int ucc_num;
121	enum qe_clock rx_clock;
122	enum qe_clock tx_clock;
123	u32 regs;
124	int irq;
125	u32 uccm_mask;
126	int bd_mem_part;
127	int brkpt_support;
128	int grant_support;
129	int tsa;
130	int cdp;
131	int cds;
132	int ctsp;
133	int ctss;
134	int tci;
135	int txsy;
136	int rtsm;
137	int revd;
138	int rsyn;
139	u16 max_rx_buf_length;
140	u16 urfs;
141	u16 urfet;
142	u16 urfset;
143	u16 utfs;
144	u16 utfet;
145	u16 utftt;
146	u16 ufpt;
147	enum ucc_fast_channel_protocol_mode mode;
148	enum ucc_fast_transparent_txrx ttx_trx;
149	enum ucc_fast_tx_encoding_method tenc;
150	enum ucc_fast_rx_decoding_method renc;
151	enum ucc_fast_transparent_tcrc tcrc;
152	enum ucc_fast_sync_len synl;
153	};
154
155	struct ucc_fast_private {
156	struct ucc_fast_info *uf_info;
7e1cc9c5 AF	157	struct ucc_fast __iomem uf_regs; / a pointer to the UCC regs. */
	158	u32 __iomem p_ucce; / a pointer to the event register in memory. */
	159	u32 __iomem p_uccm; / a pointer to the mask register in memory. */
d5b9049d	160	#ifdef CONFIG_UGETH_TX_ON_DEMAND
7e1cc9c5	161	u16 __iomem p_utodr; / pointer to the transmit on demand register */
d5b9049d	162	#endif
98658538 LY	163	int enabled_tx; /* Whether channel is enabled for Tx (ENT) */
	164	int enabled_rx; /* Whether channel is enabled for Rx (ENR) */
	165	int stopped_tx; /* Whether channel has been stopped for Tx
	166	(STOP_TX, etc.) */
	167	int stopped_rx; /* Whether channel has been stopped for Rx */
	168	u32 ucc_fast_tx_virtual_fifo_base_offset;/* pointer to base of Tx
	169	virtual fifo */
	170	u32 ucc_fast_rx_virtual_fifo_base_offset;/* pointer to base of Rx
	171	virtual fifo */
	172	#ifdef STATISTICS
	173	u32 tx_frames; /* Transmitted frames counter. */
	174	u32 rx_frames; /* Received frames counter (only frames
	175	passed to application). */
	176	u32 tx_discarded; /* Discarded tx frames counter (frames that
	177	were discarded by the driver due to errors).
	178	*/
	179	u32 rx_discarded; /* Discarded rx frames counter (frames that
	180	were discarded by the driver due to errors).
	181	*/
	182	#endif /* STATISTICS */
	183	u16 mrblr; /* maximum receive buffer length */
	184	};
	185
	186	/* ucc_fast_init
	187	* Initializes Fast UCC according to user provided parameters.
	188	*
	189	* uf_info - (In) pointer to the fast UCC info structure.
	190	* uccf_ret - (Out) pointer to the fast UCC structure.
	191	*/
	192	int ucc_fast_init(struct ucc_fast_info * uf_info, struct ucc_fast_private ** uccf_ret);
	193
	194	/* ucc_fast_free
	195	* Frees all resources for fast UCC.
	196	*
	197	* uccf - (In) pointer to the fast UCC structure.
	198	*/
	199	void ucc_fast_free(struct ucc_fast_private * uccf);
	200
	201	/* ucc_fast_enable
	202	* Enables a fast UCC port.
	203	* This routine enables Tx and/or Rx through the General UCC Mode Register.
	204	*
	205	* uccf - (In) pointer to the fast UCC structure.
	206	* mode - (In) TX, RX, or both.
	207	*/
	208	void ucc_fast_enable(struct ucc_fast_private * uccf, enum comm_dir mode);
	209
	210	/* ucc_fast_disable
	211	* Disables a fast UCC port.
	212	* This routine disables Tx and/or Rx through the General UCC Mode Register.
	213	*
	214	* uccf - (In) pointer to the fast UCC structure.
	215	* mode - (In) TX, RX, or both.
	216	*/
	217	void ucc_fast_disable(struct ucc_fast_private * uccf, enum comm_dir mode);
	218
	219	/* ucc_fast_irq
	220	* Handles interrupts on fast UCC.
	221	* Called from the general interrupt routine to handle interrupts on fast UCC.
	222	*
	223	* uccf - (In) pointer to the fast UCC structure.
	224	*/
	225	void ucc_fast_irq(struct ucc_fast_private * uccf);
	226
227	/* ucc_fast_transmit_on_demand
228	* Immediately forces a poll of the transmitter for data to be sent.
229	* Typically, the hardware performs a periodic poll for data that the
230	* transmit routine has set up to be transmitted. In cases where
231	* this polling cycle is not soon enough, this optional routine can
232	* be invoked to force a poll right away, instead. Proper use for
233	* each transmission for which this functionality is desired is to
234	* call the transmit routine and then this routine right after.
235	*
236	* uccf - (In) pointer to the fast UCC structure.
237	*/
238	void ucc_fast_transmit_on_demand(struct ucc_fast_private * uccf);
239
240	u32 ucc_fast_get_qe_cr_subblock(int uccf_num);
241
242	void ucc_fast_dump_regs(struct ucc_fast_private * uccf);
243
244	#endif /* __UCC_FAST_H__ */