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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / df93cd9c6f620039ddcbbf68e8cfa3c3f0dba76f / . / board / micronas / vct / scc.c
blob: 0368183e07213e297afd9e9907e247187dfb28bd [file] [log] [blame]
Stefan Roeseae691e52009-01-21 17:24:49 +0100[diff] [blame]1/*
2 * (C) Copyright 2009 Stefan Roese <sr@denx.de>, DENX Software Engineering
3 *
4 * Copyright (C) 2006 Micronas GmbH
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 of
9 * the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
19 * MA 02111-1307 USA
20 */
21
22#include <common.h>
23#include <asm/errno.h>
24
25#include "vct.h"
26
27/*
28 * List of statically defined buffers per SCC.
29 * The first entry in the table is the number of fixed buffers
30 * followed by the list of buffer IDs
31 */
32static u32 buffer_list_0[] = { 6, 120, 121, 122, 123, 139, 140 };
33static u32 buffer_list_1[] = { 6, 120, 121, 122, 123, 139, 140 };
34static u32 buffer_list_2[] = { 5, 124, 125, 126, 139, 140 };
35static u32 buffer_list_3[] = { 5, 124, 125, 126, 139, 140 };
36static u32 buffer_list_4[] = { 5, 124, 125, 126, 139, 140 };
37static u32 buffer_list_5[] = { 3, 127, 139, 140 };
38static u32 buffer_list_6[] = { 3, 127, 139, 140 };
39static u32 buffer_list_7[] = { 6, 128, 129, 130, 131, 139, 140 };
40static u32 buffer_list_8[] = { 6, 128, 129, 130, 131, 139, 140 };
41static u32 buffer_list_9[] = { 5, 124, 125, 126, 139, 140 };
42static u32 buffer_list_10[] = { 5, 124, 125, 126, 139, 140 };
43static u32 buffer_list_11[] = { 5, 124, 125, 126, 139, 140 };
44static u32 buffer_list_12[] = { 6, 132, 133, 134, 135, 139, 140 };
45static u32 buffer_list_13[] = { 6, 132, 133, 134, 135, 139, 140 };
46static u32 buffer_list_14[] = { 4, 137, 138, 139, 140 };
47static u32 buffer_list_15[] = { 6, 136, 136, 137, 138, 139, 140 };
48
49/** Issue#7674 (new) - DP/DVP buffer assignment */
50static u32 buffer_list_16[] = { 6, 106, 108, 109, 107, 139, 140 };
51static u32 buffer_list_17[] = { 6, 106, 110, 107, 111, 139, 140 };
52static u32 buffer_list_18[] = { 6, 106, 113, 107, 114, 139, 140 };
53static u32 buffer_list_19[] = { 3, 112, 139, 140 };
54static u32 buffer_list_20[] = { 35, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
55 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
56 79, 80, 81, 82, 83, 84, 85, 86, 139, 140 };
57static u32 buffer_list_21[] = { 27, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
58 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
59 139, 140 };
60static u32 buffer_list_22[] = { 81, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
61 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
62 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36,
63 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
64 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60,
65 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72,
66 73, 74, 75, 76, 77, 78, 139, 140 };
67static u32 buffer_list_23[] = { 29, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
68 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
69 88, 89, 139, 140 };
70static u32 buffer_list_24[] = { 6, 90, 91, 92, 93, 139, 140 };
71static u32 buffer_list_25[] = { 18, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99,
72 100, 101, 102, 103, 104, 105, 139, 140 };
73static u32 buffer_list_26[] = { 5, 94, 95, 96, 139, 140 };
74static u32 buffer_list_27[] = { 5, 97, 98, 99, 139, 140 };
75static u32 buffer_list_28[] = { 5, 100, 101, 102, 139, 140 };
76static u32 buffer_list_29[] = { 5, 103, 104, 105, 139, 140 };
77static u32 buffer_list_30[] = { 10, 108, 109, 110, 111, 113, 114, 116, 117,
78 139, 140 };
79static u32 buffer_list_31[] = { 13, 106, 107, 108, 109, 110, 111, 113, 114,
80 115, 116, 117, 139, 140 };
81static u32 buffer_list_32[] = { 13, 106, 107, 108, 109, 110, 111, 113, 114,
82 115, 116, 117, 139, 140 };
83static u32 buffer_list_33[] = { 27, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
84 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
85 139, 140 };
86static u32 buffer_list_34[] = { 27, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
87 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
88 139, 140 };
89static u32 buffer_list_35[] = { 28, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
90 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
91 87, 139, 140 };
92static u32 buffer_list_36[] = { 28, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
93 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
94 87, 139, 140 };
95static u32 buffer_list_37[] = { 27, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
96 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
97 139, 140 };
98static u32 buffer_list_38[] = { 29, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
99 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
100 118, 119, 139, 140 };
101static u32 buffer_list_39[] = { 91, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
102 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
103 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36,
104 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
105 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60,
106 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72,
107 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84,
108 85, 86, 118, 119, 139, 140 };
109static u32 buffer_list_40[] = { 0 };
110
111/*
112 * List of statically defined vcid.csize values.
113 * The first entry in the table is the number of possible csize values
114 * followed by the list of data path values in bits.
115 */
116static u32 csize_list_0[] = { 2, 0, 1 };
117static u32 csize_list_1[] = { 2, 0, 1 };
118static u32 csize_list_2[] = { 1, 1 };
119static u32 csize_list_3[] = { 1, 1 };
120static u32 csize_list_4[] = { 1, 1 };
121static u32 csize_list_5[] = { 1, 0 };
122static u32 csize_list_6[] = { 1, 0 };
123static u32 csize_list_7[] = { 1, 1 };
124static u32 csize_list_8[] = { 1, 1 };
125static u32 csize_list_9[] = { 1, 1 };
126static u32 csize_list_10[] = { 1, 1 };
127static u32 csize_list_11[] = { 1, 1 };
128static u32 csize_list_12[] = { 1, 1 };
129static u32 csize_list_13[] = { 1, 1 };
130static u32 csize_list_14[] = { 1, 2 };
131static u32 csize_list_15[] = { 1, 4 };
132static u32 csize_list_16[] = { 3, 0, 1, 2 };
133static u32 csize_list_17[] = { 3, 0, 1, 2 };
134static u32 csize_list_18[] = { 3, 0, 1, 2 };
135static u32 csize_list_19[] = { 1, 2 };
136static u32 csize_list_20[] = { 1, 0 };
137static u32 csize_list_21[] = { 1, 0 };
138static u32 csize_list_22[] = { 1, 2 };
139static u32 csize_list_23[] = { 1, 3 };
140static u32 csize_list_24[] = { 1, 3 };
141static u32 csize_list_25[] = { 1, 3 };
142static u32 csize_list_26[] = { 1, 0 };
143static u32 csize_list_27[] = { 1, 0 };
144static u32 csize_list_28[] = { 1, 0 };
145static u32 csize_list_29[] = { 1, 0 };
146static u32 csize_list_30[] = { 1, 2 };
147static u32 csize_list_31[] = { 1, 2 };
148static u32 csize_list_32[] = { 1, 2 };
149static u32 csize_list_33[] = { 1, 2 };
150static u32 csize_list_34[] = { 1, 2 };
151static u32 csize_list_35[] = { 1, 2 };
152static u32 csize_list_36[] = { 1, 2 };
153static u32 csize_list_37[] = { 2, 0, 1 };
154static u32 csize_list_38[] = { 1, 2 };
155static u32 csize_list_39[] = { 1, 3 };
156static u32 csize_list_40[] = { 1, 3 };
157
158/*
159 * SCC_Configuration table
160 */
161static const struct scc_descriptor scc_descriptor_table[] = {
162/* scn scc_name profile SCC scc_id mci_id rd wr m p fh si cfg sta */
163 {"fe_", "fe_3dcomb_wr", STRM_P, SCC0_BASE, 0, 0, 0, 4, 1, 1, 0, 0, 0, 1,
164 buffer_list_0, csize_list_0},
165 {"fe_", "fe_3dcomb_rd", STRM_P, SCC1_BASE, 1, 18, 4, 0, 1, 1, 0, 1, 0,
166 1, buffer_list_1, csize_list_1},
167 {"di_", "di_tnr_wr", STRM_P, SCC2_BASE, 2, 1, 0, 3, 1, 1, 0, 2, 0, 1,
168 buffer_list_2, csize_list_2},
169 {"di_", "di_tnr_field_rd", STRM_P, SCC3_BASE, 3, 19, 3, 0, 1, 1, 0, 3,
170 0, 1, buffer_list_3, csize_list_3},
171 {"di_", "di_tnr_frame_rd", STRM_P, SCC4_BASE, 4, 20, 3, 0, 1, 1, 0, 4,
172 0, 1, buffer_list_4, csize_list_4},
173 {"di_", "di_mval_wr", STRM_P, SCC5_BASE, 5, 2, 0, 1, 1, 1, 0, 5, 0, 1,
174 buffer_list_5, csize_list_5},
175 {"di_", "di_mval_rd", STRM_P, SCC6_BASE, 6, 21, 1, 0, 1, 1, 0, 6, 0, 1,
176 buffer_list_6, csize_list_6},
177 {"rc_", "rc_frame_wr", STRM_P, SCC7_BASE, 7, 3, 0, 4, 1, 1, 0, 7, 0, 1,
178 buffer_list_7, csize_list_7},
179 {"rc_", "rc_frame0_rd", STRM_P, SCC8_BASE, 8, 22, 4, 0, 1, 1, 0, 8, 0,
180 1, buffer_list_8, csize_list_8},
181 {"opt", "opt_field0_rd", STRM_P, SCC9_BASE, 9, 23, 3, 0, 1, 1, 0, 9, 0,
182 1, buffer_list_9, csize_list_9},
183 {"opt", "opt_field1_rd", STRM_P, SCC10_BASE, 10, 24, 3, 0, 1, 1, 0, 10,
184 0, 1, buffer_list_10, csize_list_10},
185 {"opt", "opt_field2_rd", STRM_P, SCC11_BASE, 11, 25, 3, 0, 1, 1, 0, 11,
186 0, 1, buffer_list_11, csize_list_11},
187 {"pip", "pip_frame_wr", STRM_P, SCC12_BASE, 12, 4, 0, 4, 1, 1, 0, 12, 0,
188 1, buffer_list_12, csize_list_12},
189 {"pip", "pip_frame_rd", STRM_P, SCC13_BASE, 13, 26, 4, 0, 1, 1, 0, 13,
190 0, 1, buffer_list_13, csize_list_13},
191 {"dp_", "dp_agpu_rd", STRM_P, SCC14_BASE, 14, 27, 2, 0, 2, 1, 0, 14, 0,
192 1, buffer_list_14, csize_list_14},
193 {"ewa", "ewarp_rw", SRMD, SCC15_BASE, 15, 11, 1, 1, 0, 0, 0, -1, 0, 0,
194 buffer_list_15, csize_list_15},
195 {"dp_", "dp_osd_rd", STRM_P, SCC16_BASE, 16, 28, 3, 0, 2, 1, 0, 15, 0,
196 1, buffer_list_16, csize_list_16},
197 {"dp_", "dp_graphic_rd", STRM_P, SCC17_BASE, 17, 29, 3, 0, 2, 1, 0, 16,
198 0, 1, buffer_list_17, csize_list_17},
199 {"dvp", "dvp_osd_rd", STRM_P, SCC18_BASE, 18, 30, 2, 0, 2, 1, 0, 17, 0,
200 1, buffer_list_18, csize_list_18},
201 {"dvp", "dvp_vbi_rd", STRM_D, SCC19_BASE, 19, 31, 1, 0, 0, 1, 0, -1, 0,
202 0, buffer_list_19, csize_list_19},
203 {"tsi", "tsio_wr", STRM_P, SCC20_BASE, 20, 5, 0, 8, 2, 1, 1, -1, 0, 0,
204 buffer_list_20, csize_list_20},
205 {"tsi", "tsio_rd", STRM_P, SCC21_BASE, 21, 32, 4, 0, 2, 1, 1, -1, 0, 0,
206 buffer_list_21, csize_list_21},
207 {"tsd", "tsd_wr", SRMD, SCC22_BASE, 22, 6, 0, 64, 0, 0, 1, -1, 0, 0,
208 buffer_list_22, csize_list_22},
209 {"vd_", "vd_ud_st_rw", SRMD, SCC23_BASE, 23, 12, 2, 2, 0, 0, 1, -1, 0,
210 0, buffer_list_23, csize_list_23},
211 {"vd_", "vd_frr_rd", SRMD, SCC24_BASE, 24, 33, 4, 0, 0, 0, 0, -1, 0, 0,
212 buffer_list_24, csize_list_24},
213 {"vd_", "vd_frw_disp_wr", SRMD, SCC25_BASE, 25, 7, 0, 16, 0, 0, 0, -1,
214 0, 0, buffer_list_25, csize_list_25},
215 {"mr_", "mr_vd_m_y_rd", STRM_P, SCC26_BASE, 26, 34, 3, 0, 2, 1, 0, 18,
216 0, 1, buffer_list_26, csize_list_26},
217 {"mr_", "mr_vd_m_c_rd", STRM_P, SCC27_BASE, 27, 35, 3, 0, 2, 1, 0, 19,
218 0, 1, buffer_list_27, csize_list_27},
219 {"mr_", "mr_vd_s_y_rd", STRM_P, SCC28_BASE, 28, 36, 3, 0, 2, 1, 0, 20,
220 0, 1, buffer_list_28, csize_list_28},
221 {"mr_", "mr_vd_s_c_rd", STRM_P, SCC29_BASE, 29, 37, 3, 0, 2, 1, 0, 21,
222 0, 1, buffer_list_29, csize_list_29},
223 {"ga_", "ga_wr", STRM_P, SCC30_BASE, 30, 8, 0, 1, 1, 1, 0, -1, 1, 1,
224 buffer_list_30, csize_list_30},
225 {"ga_", "ga_src1_rd", STRM_P, SCC31_BASE, 31, 38, 1, 0, 1, 1, 0, -1, 1,
226 1, buffer_list_31, csize_list_31},
227 {"ga_", "ga_src2_rd", STRM_P, SCC32_BASE, 32, 39, 1, 0, 1, 1, 0, -1, 1,
228 1, buffer_list_32, csize_list_32},
229 {"ad_", "ad_rd", STRM_D, SCC33_BASE, 33, 40, 2, 0, 0, 1, 1, -1, 0, 0,
230 buffer_list_33, csize_list_33},
231 {"ad_", "ad_wr", STRM_D, SCC34_BASE, 34, 9, 0, 3, 0, 1, 1, -1, 0, 0,
232 buffer_list_34, csize_list_34},
233 {"abp", "abp_rd", STRM_D, SCC35_BASE, 35, 41, 5, 0, 0, 1, 1, -1, 0, 0,
234 buffer_list_35, csize_list_35},
235 {"abp", "abp_wr", STRM_D, SCC36_BASE, 36, 10, 0, 3, 0, 1, 1, -1, 0, 0,
236 buffer_list_36, csize_list_36},
237 {"ebi", "ebi_rw", STRM_P, SCC37_BASE, 37, 13, 4, 4, 2, 1, 1, -1, 0, 0,
238 buffer_list_37, csize_list_37},
239 {"usb", "usb_rw", SRMD, SCC38_BASE, 38, 14, 1, 1, 0, 0, 1, -1, 0, 0,
240 buffer_list_38, csize_list_38},
241 {"cpu", "cpu1_spdma_rw", SRMD, SCC39_BASE, 39, 15, 1, 1, 0, 0, 1, -1, 0,
242 0, buffer_list_39, csize_list_39},
243 {"cpu", "cpu1_bridge_rw", SRMD, SCC40_BASE, 40, 16, 0, 0, 0, 0, 0, -1,
244 0, 0, buffer_list_40, csize_list_40},
245};
246
247/* DMA state structures for read and write channels for each SCC */
248
249static struct scc_dma_state scc_state_rd_0[] = { {-1} };
250static struct scc_dma_state scc_state_wr_0[] = { {0}, {0}, {0}, {0} };
251static struct scc_dma_state scc_state_rd_1[] = { {0}, {0}, {0}, {0} };
252static struct scc_dma_state scc_state_wr_1[] = { {-1} };
253static struct scc_dma_state scc_state_rd_2[] = { {-1} };
254static struct scc_dma_state scc_state_wr_2[] = { {0}, {0}, {0} };
255static struct scc_dma_state scc_state_rd_3[] = { {0}, {0}, {0} };
256static struct scc_dma_state scc_state_wr_3[] = { {-1} };
257static struct scc_dma_state scc_state_rd_4[] = { {0}, {0}, {0} };
258static struct scc_dma_state scc_state_wr_4[] = { {-1} };
259static struct scc_dma_state scc_state_rd_5[] = { {-1} };
260static struct scc_dma_state scc_state_wr_5[] = { {0} };
261static struct scc_dma_state scc_state_rd_6[] = { {0} };
262static struct scc_dma_state scc_state_wr_6[] = { {-1} };
263static struct scc_dma_state scc_state_rd_7[] = { {-1} };
264static struct scc_dma_state scc_state_wr_7[] = { {0}, {0}, {0}, {0} };
265static struct scc_dma_state scc_state_rd_8[] = { {0}, {0}, {0}, {0} };
266static struct scc_dma_state scc_state_wr_8[] = { {-1} };
267static struct scc_dma_state scc_state_rd_9[] = { {0}, {0}, {0}, };
268static struct scc_dma_state scc_state_wr_9[] = { {-1} };
269static struct scc_dma_state scc_state_rd_10[] = { {0}, {0}, {0} };
270static struct scc_dma_state scc_state_wr_10[] = { {-1} };
271static struct scc_dma_state scc_state_rd_11[] = { {0}, {0}, {0} };
272static struct scc_dma_state scc_state_wr_11[] = { {-1} };
273static struct scc_dma_state scc_state_rd_12[] = { {-1} };
274static struct scc_dma_state scc_state_wr_12[] = { {0}, {0}, {0}, {0} };
275static struct scc_dma_state scc_state_rd_13[] = { {0}, {0}, {0}, {0} };
276static struct scc_dma_state scc_state_wr_13[] = { {-1} };
277static struct scc_dma_state scc_state_rd_14[] = { {0}, {0} };
278static struct scc_dma_state scc_state_wr_14[] = { {-1} };
279static struct scc_dma_state scc_state_rd_15[] = { {0} };
280static struct scc_dma_state scc_state_wr_15[] = { {0} };
281static struct scc_dma_state scc_state_rd_16[] = { {0}, {0}, {0} };
282static struct scc_dma_state scc_state_wr_16[] = { {-1} };
283static struct scc_dma_state scc_state_rd_17[] = { {0}, {0}, {0} };
284static struct scc_dma_state scc_state_wr_17[] = { {-1} };
285static struct scc_dma_state scc_state_rd_18[] = { {0}, {0} };
286static struct scc_dma_state scc_state_wr_18[] = { {-1} };
287static struct scc_dma_state scc_state_rd_19[] = { {0} };
288static struct scc_dma_state scc_state_wr_19[] = { {-1} };
289static struct scc_dma_state scc_state_rd_20[] = { {-1} };
290static struct scc_dma_state scc_state_wr_20[] = {
291 {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0} };
292static struct scc_dma_state scc_state_rd_21[] = { {0}, {0}, {0}, {0} };
293static struct scc_dma_state scc_state_wr_21[] = { {-1} };
294static struct scc_dma_state scc_state_rd_22[] = { {-1} };
295static struct scc_dma_state scc_state_wr_22[] = {
296 {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0},
297 {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0},
298 {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0},
299 {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0},
300 {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0} };
301static struct scc_dma_state scc_state_rd_23[] = { {0}, {0} };
302static struct scc_dma_state scc_state_wr_23[] = { {0}, {0} };
303static struct scc_dma_state scc_state_rd_24[] = { {0}, {0}, {0}, {0} };
304static struct scc_dma_state scc_state_wr_24[] = { {-1} };
305static struct scc_dma_state scc_state_rd_25[] = { {-1} };
306static struct scc_dma_state scc_state_wr_25[] = {
307 {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0},
308 {0}, {0} };
309static struct scc_dma_state scc_state_rd_26[] = { {0}, {0}, {0} };
310static struct scc_dma_state scc_state_wr_26[] = { {-1} };
311static struct scc_dma_state scc_state_rd_27[] = { {0}, {0}, {0} };
312static struct scc_dma_state scc_state_wr_27[] = { {-1} };
313static struct scc_dma_state scc_state_rd_28[] = { {0}, {0}, {0} };
314static struct scc_dma_state scc_state_wr_28[] = { {-1} };
315static struct scc_dma_state scc_state_rd_29[] = { {0}, {0}, {0} };
316static struct scc_dma_state scc_state_wr_29[] = { {-1} };
317static struct scc_dma_state scc_state_rd_30[] = { {-1} };
318static struct scc_dma_state scc_state_wr_30[] = { {0} };
319static struct scc_dma_state scc_state_rd_31[] = { {0} };
320static struct scc_dma_state scc_state_wr_31[] = { {-1} };
321static struct scc_dma_state scc_state_rd_32[] = { {0} };
322static struct scc_dma_state scc_state_wr_32[] = { {-1} };
323static struct scc_dma_state scc_state_rd_33[] = { {0}, {0} };
324static struct scc_dma_state scc_state_wr_33[] = { {-1} };
325static struct scc_dma_state scc_state_rd_34[] = { {-1} };
326static struct scc_dma_state scc_state_wr_34[] = { {0}, {0}, {0} };
327static struct scc_dma_state scc_state_rd_35[] = { {0}, {0}, {0}, {0}, {0} };
328static struct scc_dma_state scc_state_wr_35[] = { {-1} };
329static struct scc_dma_state scc_state_rd_36[] = { {-1} };
330static struct scc_dma_state scc_state_wr_36[] = { {0}, {0}, {0} };
331static struct scc_dma_state scc_state_rd_37[] = { {0}, {0}, {0}, {0} };
332static struct scc_dma_state scc_state_wr_37[] = { {0}, {0}, {0}, {0} };
333static struct scc_dma_state scc_state_rd_38[] = { {0} };
334static struct scc_dma_state scc_state_wr_38[] = { {0} };
335static struct scc_dma_state scc_state_rd_39[] = { {0} };
336static struct scc_dma_state scc_state_wr_39[] = { {0} };
337static struct scc_dma_state scc_state_rd_40[] = { {-1} };
338static struct scc_dma_state scc_state_wr_40[] = { {-1} };
339
340/* DMA state references to access from the driver */
341static struct scc_dma_state *scc_state_rd[] = {
342 scc_state_rd_0,
343 scc_state_rd_1,
344 scc_state_rd_2,
345 scc_state_rd_3,
346 scc_state_rd_4,
347 scc_state_rd_5,
348 scc_state_rd_6,
349 scc_state_rd_7,
350 scc_state_rd_8,
351 scc_state_rd_9,
352 scc_state_rd_10,
353 scc_state_rd_11,
354 scc_state_rd_12,
355 scc_state_rd_13,
356 scc_state_rd_14,
357 scc_state_rd_15,
358 scc_state_rd_16,
359 scc_state_rd_17,
360 scc_state_rd_18,
361 scc_state_rd_19,
362 scc_state_rd_20,
363 scc_state_rd_21,
364 scc_state_rd_22,
365 scc_state_rd_23,
366 scc_state_rd_24,
367 scc_state_rd_25,
368 scc_state_rd_26,
369 scc_state_rd_27,
370 scc_state_rd_28,
371 scc_state_rd_29,
372 scc_state_rd_30,
373 scc_state_rd_31,
374 scc_state_rd_32,
375 scc_state_rd_33,
376 scc_state_rd_34,
377 scc_state_rd_35,
378 scc_state_rd_36,
379 scc_state_rd_37,
380 scc_state_rd_38,
381 scc_state_rd_39,
382 scc_state_rd_40,
383};
384
385static struct scc_dma_state *scc_state_wr[] = {
386 scc_state_wr_0,
387 scc_state_wr_1,
388 scc_state_wr_2,
389 scc_state_wr_3,
390 scc_state_wr_4,
391 scc_state_wr_5,
392 scc_state_wr_6,
393 scc_state_wr_7,
394 scc_state_wr_8,
395 scc_state_wr_9,
396 scc_state_wr_10,
397 scc_state_wr_11,
398 scc_state_wr_12,
399 scc_state_wr_13,
400 scc_state_wr_14,
401 scc_state_wr_15,
402 scc_state_wr_16,
403 scc_state_wr_17,
404 scc_state_wr_18,
405 scc_state_wr_19,
406 scc_state_wr_20,
407 scc_state_wr_21,
408 scc_state_wr_22,
409 scc_state_wr_23,
410 scc_state_wr_24,
411 scc_state_wr_25,
412 scc_state_wr_26,
413 scc_state_wr_27,
414 scc_state_wr_28,
415 scc_state_wr_29,
416 scc_state_wr_30,
417 scc_state_wr_31,
418 scc_state_wr_32,
419 scc_state_wr_33,
420 scc_state_wr_34,
421 scc_state_wr_35,
422 scc_state_wr_36,
423 scc_state_wr_37,
424 scc_state_wr_38,
425 scc_state_wr_39,
426 scc_state_wr_40,
427};
428
429static u32 scc_takeover_mode = SCC_TO_IMMEDIATE;
430
431/* Change mode of the SPDMA for given direction */
432static u32 scc_agu_mode_sp = AGU_BYPASS;
433
434/* Change mode of the USB for given direction */
435static u32 scc_agu_mode_usb = AGU_BYPASS;
436
437static union scc_softwareconfiguration scc_software_configuration[SCC_MAX];
438
439static u32 dma_fsm[4][4] = {
440 /* DMA_CMD_RESET DMA_CMD_SETUP DMA_CMD_START DMA_CMD_STOP */
441 /* DMA_STATE_RESET */
442 {DMA_STATE_RESET, DMA_STATE_SETUP, DMA_STATE_ERROR, DMA_STATE_ERROR},
443 /* DMA_STATE_SETUP */
444 {DMA_STATE_RESET, DMA_STATE_SETUP, DMA_STATE_START, DMA_STATE_SETUP},
445 /* DMA_STATE_START */
446 {DMA_STATE_RESET, DMA_STATE_ERROR, DMA_STATE_START, DMA_STATE_SETUP},
447 /* DMA_STATE_ERROR */
448 {DMA_STATE_RESET, DMA_STATE_ERROR, DMA_STATE_ERROR, DMA_STATE_ERROR},
449};
450
451static void dma_state_process(struct scc_dma_state *dma_state, u32 cmd)
452{
453 dma_state->dma_status = dma_fsm[dma_state->dma_status][cmd];
454 dma_state->dma_cmd = cmd;
455}
456
457static void dma_state_process_dma_command(struct scc_dma_state *dma_state,
458 u32 dma_cmd)
459{
460 dma_state->dma_cmd = dma_cmd;
461 switch (dma_cmd) {
462 case DMA_START:
463 case DMA_START_FH_RESET:
464 dma_state_process(dma_state, DMA_CMD_START);
465 break;
466 case DMA_STOP:
467 dma_state_process(dma_state, DMA_CMD_STOP);
468 break;
469 default:
470 break;
471 }
472}
473
474static void scc_takeover_dma(enum scc_id id, u32 dma_id, u32 drs)
475{
476 union scc_cmd dma_cmd;
477
478 dma_cmd.reg = 0;
479
480 /* Prepare the takeover for the DMA channel */
481 dma_cmd.bits.action = DMA_TAKEOVER;
482 dma_cmd.bits.id = dma_id;
483 dma_cmd.bits.rid = TO_DMA_CFG; /* this is DMA_CFG register takeover */
484 if (drs == DMA_WRITE)
485 dma_cmd.bits.drs = DMA_WRITE;
486
487 reg_write(SCC_CMD(scc_descriptor_table[id].base_address), dma_cmd.reg);
488}
489
490int scc_dma_cmd(enum scc_id id, u32 cmd, u32 dma_id, u32 drs)
491{
492 union scc_cmd dma_cmd;
493 struct scc_dma_state *dma_state;
494
495 if ((id >= SCC_MAX) || (id < 0))
496 return -EINVAL;
497
498 dma_cmd.reg = 0;
499
500 /* Prepare the takeover for the DMA channel */
501 dma_cmd.bits.action = cmd;
502 dma_cmd.bits.id = dma_id;
503 if (drs == DMA_WRITE) {
504 dma_cmd.bits.drs = DMA_WRITE;
505 dma_state = &scc_state_wr[id][dma_id];
506 } else {
507 dma_state = &scc_state_rd[id][dma_id];
508 }
509
510 dma_state->scc_id = id;
511 dma_state->dma_id = dma_id;
512 dma_state_process_dma_command(dma_state, cmd);
513
514 reg_write(SCC_CMD(scc_descriptor_table[id].base_address), dma_cmd.reg);
515
516 return 0;
517}
518
519int scc_set_usb_address_generation_mode(u32 agu_mode)
520{
521 if (AGU_ACTIVE == agu_mode) {
522 /* Ensure both DMAs are stopped */
523 scc_dma_cmd(SCC_USB_RW, DMA_STOP, 0, DMA_WRITE);
524 scc_dma_cmd(SCC_USB_RW, DMA_STOP, 0, DMA_READ);
525 } else {
526 agu_mode = AGU_BYPASS;
527 }
528
529 scc_agu_mode_usb = agu_mode;
530
531 return 0;
532}
533
534int scc_setup_dma(enum scc_id id, u32 buffer_tag,
535 u32 type, u32 fh_mode, u32 drs, u32 dma_id)
536{
537 struct scc_dma_state *dma_state;
538 int return_value = 0;
539 union scc_dma_cfg dma_cfg;
540 u32 *buffer_tag_list = scc_descriptor_table[id].buffer_tag_list;
541 u32 tag_count, t, t_valid;
542
543 if ((id >= SCC_MAX) || (id < 0))
544 return -EINVAL;
545
546 /* if the register is only configured by hw, cannot write! */
547 if (1 == scc_descriptor_table[id].hw_dma_cfg)
548 return -EACCES;
549
550 if (DMA_WRITE == drs) {
551 if (dma_id >= scc_descriptor_table[id].p_dma_channels_wr)
552 return -EINVAL;
553 dma_state = &scc_state_wr[id][dma_id];
554 } else {
555 if (dma_id >= scc_descriptor_table[id].p_dma_channels_rd)
556 return -EINVAL;
557 dma_state = &scc_state_rd[id][dma_id];
558 }
559
560 /* Compose the DMA configuration register */
561 tag_count = buffer_tag_list[0];
562 t_valid = 0;
563 for (t = 1; t <= tag_count; t++) {
564 if (buffer_tag == buffer_tag_list[t]) {
565 /* Tag found - validate */
566 t_valid = 1;
567 break;
568 }
569 }
570
571 if (!t_valid)
572 return -EACCES;
573
574 /*
575 * Read the register first -- two functions write into the register
576 * it does not make sense to read the DMA config back, because there
577 * are two register configuration sets (drs)
578 */
579 dma_cfg.reg = 0;
580 dma_cfg.bits.buffer_id = buffer_tag;
581 dma_state_process(dma_state, DMA_CMD_SETUP);
582
583 /*
584 * This is Packet CFG set select - usable for TSIO, EBI and those SCCs
585 * which habe 2 packet configs
586 */
587 dma_cfg.bits.packet_cfg_id =
588 scc_software_configuration[id].bits.packet_select;
589
590 if (type == DMA_CYCLIC)
591 dma_cfg.bits.buffer_type = 1;
592 else
593 dma_cfg.bits.buffer_type = 0;
594
595 if (fh_mode == USE_FH)
596 dma_cfg.bits.fh_mode = 1;
597 else
598 dma_cfg.bits.fh_mode = 0;
599
600 if (id == SCC_CPU1_SPDMA_RW)
601 dma_cfg.bits.agu_mode = scc_agu_mode_sp;
602
603 if (id == SCC_USB_RW)
604 dma_cfg.bits.agu_mode = scc_agu_mode_usb;
605
606 reg_write(SCC_DMA_CFG(scc_descriptor_table[id].base_address),
607 dma_cfg.reg);
608
609 /* The DMA_CFG needs a takeover! */
610 if (SCC_TO_IMMEDIATE == scc_takeover_mode)
611 scc_takeover_dma(id, dma_id, drs);
612
613 /* if (buffer_tag is not used) */
614 dma_state->buffer_tag = buffer_tag;
615
616 dma_state->scc_id = id;
617 dma_state->dma_id = dma_id;
618
619 return return_value;
620}
621
622int scc_enable(enum scc_id id, u32 value)
623{
624 if ((id >= SCC_MAX) || (id < 0))
625 return -EINVAL;
626
627 if (value == 0) {
628 scc_software_configuration[id].bits.enable_status = 0;
629 } else {
630 value = 1;
631 scc_software_configuration[id].bits.enable_status = 1;
632 }
633 reg_write(SCC_ENABLE(scc_descriptor_table[id].base_address), value);
634
635 return 0;
636}
637
638static inline void ehb(void)
639{
640 __asm__ __volatile__(
641 " .set mips32r2 \n"
642 " ehb \n"
643 " .set mips0 \n");
644}
645
646int scc_reset(enum scc_id id, u32 value)
647{
648 if ((id >= SCC_MAX) || (id < 0))
649 return -EINVAL;
650
651 /* Invert value to the strait logic from the negative hardware logic */
652 if (value == 0)
653 value = 1;
654 else
655 value = 0;
656
657 /* Write the value to the register */
658 reg_write(SCC_RESET(scc_descriptor_table[id].base_address), value);
659
660 /* sync flush */
661 asm("sync"); /* request bus write queue flush */
662 ehb(); /* wait until previous bus commit instr has finished */
663 asm("nop"); /* wait for flush to occur */
664 asm("nop"); /* wait for flush to occur */
665
666 udelay(100);
667
668 return 0;
669}