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