Gitiles
Code Review Sign In
gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / b08a704ddcede36974ab0ae641a78614db843793 / . / board / micronas / vct / scc.c
blob: 6621231b07b6deea295676a7246099c42c4a3802 [file] [log] [blame]
Tom Rini83d290c2018-05-06 17:58:06 -0400[diff] [blame]1// SPDX-License-Identifier: GPL-2.0+
Stefan Roeseae691e52009-01-21 17:24:49 +0100[diff] [blame]2/*
3 * (C) Copyright 2009 Stefan Roese <sr@denx.de>, DENX Software Engineering
4 *
5 * Copyright (C) 2006 Micronas GmbH
Stefan Roeseae691e52009-01-21 17:24:49 +0100[diff] [blame]6 */
7
8#include <common.h>
Masahiro Yamada1221ce42016-09-21 11:28:55 +0900[diff] [blame]9#include <linux/errno.h>
Stefan Roeseae691e52009-01-21 17:24:49 +0100[diff] [blame]10
11#include "vct.h"
12
13/*
14 * List of statically defined buffers per SCC.
15 * The first entry in the table is the number of fixed buffers
16 * followed by the list of buffer IDs
17 */
18static u32 buffer_list_0[] = { 6, 120, 121, 122, 123, 139, 140 };
19static u32 buffer_list_1[] = { 6, 120, 121, 122, 123, 139, 140 };
20static u32 buffer_list_2[] = { 5, 124, 125, 126, 139, 140 };
21static u32 buffer_list_3[] = { 5, 124, 125, 126, 139, 140 };
22static u32 buffer_list_4[] = { 5, 124, 125, 126, 139, 140 };
23static u32 buffer_list_5[] = { 3, 127, 139, 140 };
24static u32 buffer_list_6[] = { 3, 127, 139, 140 };
25static u32 buffer_list_7[] = { 6, 128, 129, 130, 131, 139, 140 };
26static u32 buffer_list_8[] = { 6, 128, 129, 130, 131, 139, 140 };
27static u32 buffer_list_9[] = { 5, 124, 125, 126, 139, 140 };
28static u32 buffer_list_10[] = { 5, 124, 125, 126, 139, 140 };
29static u32 buffer_list_11[] = { 5, 124, 125, 126, 139, 140 };
30static u32 buffer_list_12[] = { 6, 132, 133, 134, 135, 139, 140 };
31static u32 buffer_list_13[] = { 6, 132, 133, 134, 135, 139, 140 };
32static u32 buffer_list_14[] = { 4, 137, 138, 139, 140 };
33static u32 buffer_list_15[] = { 6, 136, 136, 137, 138, 139, 140 };
34
35/** Issue#7674 (new) - DP/DVP buffer assignment */
36static u32 buffer_list_16[] = { 6, 106, 108, 109, 107, 139, 140 };
37static u32 buffer_list_17[] = { 6, 106, 110, 107, 111, 139, 140 };
38static u32 buffer_list_18[] = { 6, 106, 113, 107, 114, 139, 140 };
39static u32 buffer_list_19[] = { 3, 112, 139, 140 };
40static u32 buffer_list_20[] = { 35, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
41 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
42 79, 80, 81, 82, 83, 84, 85, 86, 139, 140 };
43static u32 buffer_list_21[] = { 27, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
44 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
45 139, 140 };
46static u32 buffer_list_22[] = { 81, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
47 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
48 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36,
49 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
50 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60,
51 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72,
52 73, 74, 75, 76, 77, 78, 139, 140 };
53static u32 buffer_list_23[] = { 29, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
54 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
55 88, 89, 139, 140 };
56static u32 buffer_list_24[] = { 6, 90, 91, 92, 93, 139, 140 };
57static u32 buffer_list_25[] = { 18, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99,
58 100, 101, 102, 103, 104, 105, 139, 140 };
59static u32 buffer_list_26[] = { 5, 94, 95, 96, 139, 140 };
60static u32 buffer_list_27[] = { 5, 97, 98, 99, 139, 140 };
61static u32 buffer_list_28[] = { 5, 100, 101, 102, 139, 140 };
62static u32 buffer_list_29[] = { 5, 103, 104, 105, 139, 140 };
63static u32 buffer_list_30[] = { 10, 108, 109, 110, 111, 113, 114, 116, 117,
64 139, 140 };
65static u32 buffer_list_31[] = { 13, 106, 107, 108, 109, 110, 111, 113, 114,
66 115, 116, 117, 139, 140 };
67static u32 buffer_list_32[] = { 13, 106, 107, 108, 109, 110, 111, 113, 114,
68 115, 116, 117, 139, 140 };
69static u32 buffer_list_33[] = { 27, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
70 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
71 139, 140 };
72static u32 buffer_list_34[] = { 27, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
73 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
74 139, 140 };
75static u32 buffer_list_35[] = { 28, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
76 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
77 87, 139, 140 };
78static u32 buffer_list_36[] = { 28, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
79 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
80 87, 139, 140 };
81static u32 buffer_list_37[] = { 27, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
82 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
83 139, 140 };
84static u32 buffer_list_38[] = { 29, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
85 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
86 118, 119, 139, 140 };
87static u32 buffer_list_39[] = { 91, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
88 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
89 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36,
90 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
91 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60,
92 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72,
93 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84,
94 85, 86, 118, 119, 139, 140 };
95static u32 buffer_list_40[] = { 0 };
96
97/*
98 * List of statically defined vcid.csize values.
99 * The first entry in the table is the number of possible csize values
100 * followed by the list of data path values in bits.
101 */
102static u32 csize_list_0[] = { 2, 0, 1 };
103static u32 csize_list_1[] = { 2, 0, 1 };
104static u32 csize_list_2[] = { 1, 1 };
105static u32 csize_list_3[] = { 1, 1 };
106static u32 csize_list_4[] = { 1, 1 };
107static u32 csize_list_5[] = { 1, 0 };
108static u32 csize_list_6[] = { 1, 0 };
109static u32 csize_list_7[] = { 1, 1 };
110static u32 csize_list_8[] = { 1, 1 };
111static u32 csize_list_9[] = { 1, 1 };
112static u32 csize_list_10[] = { 1, 1 };
113static u32 csize_list_11[] = { 1, 1 };
114static u32 csize_list_12[] = { 1, 1 };
115static u32 csize_list_13[] = { 1, 1 };
116static u32 csize_list_14[] = { 1, 2 };
117static u32 csize_list_15[] = { 1, 4 };
118static u32 csize_list_16[] = { 3, 0, 1, 2 };
119static u32 csize_list_17[] = { 3, 0, 1, 2 };
120static u32 csize_list_18[] = { 3, 0, 1, 2 };
121static u32 csize_list_19[] = { 1, 2 };
122static u32 csize_list_20[] = { 1, 0 };
123static u32 csize_list_21[] = { 1, 0 };
124static u32 csize_list_22[] = { 1, 2 };
125static u32 csize_list_23[] = { 1, 3 };
126static u32 csize_list_24[] = { 1, 3 };
127static u32 csize_list_25[] = { 1, 3 };
128static u32 csize_list_26[] = { 1, 0 };
129static u32 csize_list_27[] = { 1, 0 };
130static u32 csize_list_28[] = { 1, 0 };
131static u32 csize_list_29[] = { 1, 0 };
132static u32 csize_list_30[] = { 1, 2 };
133static u32 csize_list_31[] = { 1, 2 };
134static u32 csize_list_32[] = { 1, 2 };
135static u32 csize_list_33[] = { 1, 2 };
136static u32 csize_list_34[] = { 1, 2 };
137static u32 csize_list_35[] = { 1, 2 };
138static u32 csize_list_36[] = { 1, 2 };
139static u32 csize_list_37[] = { 2, 0, 1 };
140static u32 csize_list_38[] = { 1, 2 };
141static u32 csize_list_39[] = { 1, 3 };
142static u32 csize_list_40[] = { 1, 3 };
143
144/*
145 * SCC_Configuration table
146 */
147static const struct scc_descriptor scc_descriptor_table[] = {
148/* scn scc_name profile SCC scc_id mci_id rd wr m p fh si cfg sta */
149 {"fe_", "fe_3dcomb_wr", STRM_P, SCC0_BASE, 0, 0, 0, 4, 1, 1, 0, 0, 0, 1,
150 buffer_list_0, csize_list_0},
151 {"fe_", "fe_3dcomb_rd", STRM_P, SCC1_BASE, 1, 18, 4, 0, 1, 1, 0, 1, 0,
152 1, buffer_list_1, csize_list_1},
153 {"di_", "di_tnr_wr", STRM_P, SCC2_BASE, 2, 1, 0, 3, 1, 1, 0, 2, 0, 1,
154 buffer_list_2, csize_list_2},
155 {"di_", "di_tnr_field_rd", STRM_P, SCC3_BASE, 3, 19, 3, 0, 1, 1, 0, 3,
156 0, 1, buffer_list_3, csize_list_3},
157 {"di_", "di_tnr_frame_rd", STRM_P, SCC4_BASE, 4, 20, 3, 0, 1, 1, 0, 4,
158 0, 1, buffer_list_4, csize_list_4},
159 {"di_", "di_mval_wr", STRM_P, SCC5_BASE, 5, 2, 0, 1, 1, 1, 0, 5, 0, 1,
160 buffer_list_5, csize_list_5},
161 {"di_", "di_mval_rd", STRM_P, SCC6_BASE, 6, 21, 1, 0, 1, 1, 0, 6, 0, 1,
162 buffer_list_6, csize_list_6},
163 {"rc_", "rc_frame_wr", STRM_P, SCC7_BASE, 7, 3, 0, 4, 1, 1, 0, 7, 0, 1,
164 buffer_list_7, csize_list_7},
165 {"rc_", "rc_frame0_rd", STRM_P, SCC8_BASE, 8, 22, 4, 0, 1, 1, 0, 8, 0,
166 1, buffer_list_8, csize_list_8},
167 {"opt", "opt_field0_rd", STRM_P, SCC9_BASE, 9, 23, 3, 0, 1, 1, 0, 9, 0,
168 1, buffer_list_9, csize_list_9},
169 {"opt", "opt_field1_rd", STRM_P, SCC10_BASE, 10, 24, 3, 0, 1, 1, 0, 10,
170 0, 1, buffer_list_10, csize_list_10},
171 {"opt", "opt_field2_rd", STRM_P, SCC11_BASE, 11, 25, 3, 0, 1, 1, 0, 11,
172 0, 1, buffer_list_11, csize_list_11},
173 {"pip", "pip_frame_wr", STRM_P, SCC12_BASE, 12, 4, 0, 4, 1, 1, 0, 12, 0,
174 1, buffer_list_12, csize_list_12},
175 {"pip", "pip_frame_rd", STRM_P, SCC13_BASE, 13, 26, 4, 0, 1, 1, 0, 13,
176 0, 1, buffer_list_13, csize_list_13},
177 {"dp_", "dp_agpu_rd", STRM_P, SCC14_BASE, 14, 27, 2, 0, 2, 1, 0, 14, 0,
178 1, buffer_list_14, csize_list_14},
179 {"ewa", "ewarp_rw", SRMD, SCC15_BASE, 15, 11, 1, 1, 0, 0, 0, -1, 0, 0,
180 buffer_list_15, csize_list_15},
181 {"dp_", "dp_osd_rd", STRM_P, SCC16_BASE, 16, 28, 3, 0, 2, 1, 0, 15, 0,
182 1, buffer_list_16, csize_list_16},
183 {"dp_", "dp_graphic_rd", STRM_P, SCC17_BASE, 17, 29, 3, 0, 2, 1, 0, 16,
184 0, 1, buffer_list_17, csize_list_17},
185 {"dvp", "dvp_osd_rd", STRM_P, SCC18_BASE, 18, 30, 2, 0, 2, 1, 0, 17, 0,
186 1, buffer_list_18, csize_list_18},
187 {"dvp", "dvp_vbi_rd", STRM_D, SCC19_BASE, 19, 31, 1, 0, 0, 1, 0, -1, 0,
188 0, buffer_list_19, csize_list_19},
189 {"tsi", "tsio_wr", STRM_P, SCC20_BASE, 20, 5, 0, 8, 2, 1, 1, -1, 0, 0,
190 buffer_list_20, csize_list_20},
191 {"tsi", "tsio_rd", STRM_P, SCC21_BASE, 21, 32, 4, 0, 2, 1, 1, -1, 0, 0,
192 buffer_list_21, csize_list_21},
193 {"tsd", "tsd_wr", SRMD, SCC22_BASE, 22, 6, 0, 64, 0, 0, 1, -1, 0, 0,
194 buffer_list_22, csize_list_22},
195 {"vd_", "vd_ud_st_rw", SRMD, SCC23_BASE, 23, 12, 2, 2, 0, 0, 1, -1, 0,
196 0, buffer_list_23, csize_list_23},
197 {"vd_", "vd_frr_rd", SRMD, SCC24_BASE, 24, 33, 4, 0, 0, 0, 0, -1, 0, 0,
198 buffer_list_24, csize_list_24},
199 {"vd_", "vd_frw_disp_wr", SRMD, SCC25_BASE, 25, 7, 0, 16, 0, 0, 0, -1,
200 0, 0, buffer_list_25, csize_list_25},
201 {"mr_", "mr_vd_m_y_rd", STRM_P, SCC26_BASE, 26, 34, 3, 0, 2, 1, 0, 18,
202 0, 1, buffer_list_26, csize_list_26},
203 {"mr_", "mr_vd_m_c_rd", STRM_P, SCC27_BASE, 27, 35, 3, 0, 2, 1, 0, 19,
204 0, 1, buffer_list_27, csize_list_27},
205 {"mr_", "mr_vd_s_y_rd", STRM_P, SCC28_BASE, 28, 36, 3, 0, 2, 1, 0, 20,
206 0, 1, buffer_list_28, csize_list_28},
207 {"mr_", "mr_vd_s_c_rd", STRM_P, SCC29_BASE, 29, 37, 3, 0, 2, 1, 0, 21,
208 0, 1, buffer_list_29, csize_list_29},
209 {"ga_", "ga_wr", STRM_P, SCC30_BASE, 30, 8, 0, 1, 1, 1, 0, -1, 1, 1,
210 buffer_list_30, csize_list_30},
211 {"ga_", "ga_src1_rd", STRM_P, SCC31_BASE, 31, 38, 1, 0, 1, 1, 0, -1, 1,
212 1, buffer_list_31, csize_list_31},
213 {"ga_", "ga_src2_rd", STRM_P, SCC32_BASE, 32, 39, 1, 0, 1, 1, 0, -1, 1,
214 1, buffer_list_32, csize_list_32},
215 {"ad_", "ad_rd", STRM_D, SCC33_BASE, 33, 40, 2, 0, 0, 1, 1, -1, 0, 0,
216 buffer_list_33, csize_list_33},
217 {"ad_", "ad_wr", STRM_D, SCC34_BASE, 34, 9, 0, 3, 0, 1, 1, -1, 0, 0,
218 buffer_list_34, csize_list_34},
219 {"abp", "abp_rd", STRM_D, SCC35_BASE, 35, 41, 5, 0, 0, 1, 1, -1, 0, 0,
220 buffer_list_35, csize_list_35},
221 {"abp", "abp_wr", STRM_D, SCC36_BASE, 36, 10, 0, 3, 0, 1, 1, -1, 0, 0,
222 buffer_list_36, csize_list_36},
223 {"ebi", "ebi_rw", STRM_P, SCC37_BASE, 37, 13, 4, 4, 2, 1, 1, -1, 0, 0,
224 buffer_list_37, csize_list_37},
225 {"usb", "usb_rw", SRMD, SCC38_BASE, 38, 14, 1, 1, 0, 0, 1, -1, 0, 0,
226 buffer_list_38, csize_list_38},
227 {"cpu", "cpu1_spdma_rw", SRMD, SCC39_BASE, 39, 15, 1, 1, 0, 0, 1, -1, 0,
228 0, buffer_list_39, csize_list_39},
229 {"cpu", "cpu1_bridge_rw", SRMD, SCC40_BASE, 40, 16, 0, 0, 0, 0, 0, -1,
230 0, 0, buffer_list_40, csize_list_40},
231};
232
233/* DMA state structures for read and write channels for each SCC */
234
235static struct scc_dma_state scc_state_rd_0[] = { {-1} };
236static struct scc_dma_state scc_state_wr_0[] = { {0}, {0}, {0}, {0} };
237static struct scc_dma_state scc_state_rd_1[] = { {0}, {0}, {0}, {0} };
238static struct scc_dma_state scc_state_wr_1[] = { {-1} };
239static struct scc_dma_state scc_state_rd_2[] = { {-1} };
240static struct scc_dma_state scc_state_wr_2[] = { {0}, {0}, {0} };
241static struct scc_dma_state scc_state_rd_3[] = { {0}, {0}, {0} };
242static struct scc_dma_state scc_state_wr_3[] = { {-1} };
243static struct scc_dma_state scc_state_rd_4[] = { {0}, {0}, {0} };
244static struct scc_dma_state scc_state_wr_4[] = { {-1} };
245static struct scc_dma_state scc_state_rd_5[] = { {-1} };
246static struct scc_dma_state scc_state_wr_5[] = { {0} };
247static struct scc_dma_state scc_state_rd_6[] = { {0} };
248static struct scc_dma_state scc_state_wr_6[] = { {-1} };
249static struct scc_dma_state scc_state_rd_7[] = { {-1} };
250static struct scc_dma_state scc_state_wr_7[] = { {0}, {0}, {0}, {0} };
251static struct scc_dma_state scc_state_rd_8[] = { {0}, {0}, {0}, {0} };
252static struct scc_dma_state scc_state_wr_8[] = { {-1} };
253static struct scc_dma_state scc_state_rd_9[] = { {0}, {0}, {0}, };
254static struct scc_dma_state scc_state_wr_9[] = { {-1} };
255static struct scc_dma_state scc_state_rd_10[] = { {0}, {0}, {0} };
256static struct scc_dma_state scc_state_wr_10[] = { {-1} };
257static struct scc_dma_state scc_state_rd_11[] = { {0}, {0}, {0} };
258static struct scc_dma_state scc_state_wr_11[] = { {-1} };
259static struct scc_dma_state scc_state_rd_12[] = { {-1} };
260static struct scc_dma_state scc_state_wr_12[] = { {0}, {0}, {0}, {0} };
261static struct scc_dma_state scc_state_rd_13[] = { {0}, {0}, {0}, {0} };
262static struct scc_dma_state scc_state_wr_13[] = { {-1} };
263static struct scc_dma_state scc_state_rd_14[] = { {0}, {0} };
264static struct scc_dma_state scc_state_wr_14[] = { {-1} };
265static struct scc_dma_state scc_state_rd_15[] = { {0} };
266static struct scc_dma_state scc_state_wr_15[] = { {0} };
267static struct scc_dma_state scc_state_rd_16[] = { {0}, {0}, {0} };
268static struct scc_dma_state scc_state_wr_16[] = { {-1} };
269static struct scc_dma_state scc_state_rd_17[] = { {0}, {0}, {0} };
270static struct scc_dma_state scc_state_wr_17[] = { {-1} };
271static struct scc_dma_state scc_state_rd_18[] = { {0}, {0} };
272static struct scc_dma_state scc_state_wr_18[] = { {-1} };
273static struct scc_dma_state scc_state_rd_19[] = { {0} };
274static struct scc_dma_state scc_state_wr_19[] = { {-1} };
275static struct scc_dma_state scc_state_rd_20[] = { {-1} };
276static struct scc_dma_state scc_state_wr_20[] = {
277 {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0} };
278static struct scc_dma_state scc_state_rd_21[] = { {0}, {0}, {0}, {0} };
279static struct scc_dma_state scc_state_wr_21[] = { {-1} };
280static struct scc_dma_state scc_state_rd_22[] = { {-1} };
281static struct scc_dma_state scc_state_wr_22[] = {
282 {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0},
283 {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0},
284 {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0},
285 {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0},
286 {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0} };
287static struct scc_dma_state scc_state_rd_23[] = { {0}, {0} };
288static struct scc_dma_state scc_state_wr_23[] = { {0}, {0} };
289static struct scc_dma_state scc_state_rd_24[] = { {0}, {0}, {0}, {0} };
290static struct scc_dma_state scc_state_wr_24[] = { {-1} };
291static struct scc_dma_state scc_state_rd_25[] = { {-1} };
292static struct scc_dma_state scc_state_wr_25[] = {
293 {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0},
294 {0}, {0} };
295static struct scc_dma_state scc_state_rd_26[] = { {0}, {0}, {0} };
296static struct scc_dma_state scc_state_wr_26[] = { {-1} };
297static struct scc_dma_state scc_state_rd_27[] = { {0}, {0}, {0} };
298static struct scc_dma_state scc_state_wr_27[] = { {-1} };
299static struct scc_dma_state scc_state_rd_28[] = { {0}, {0}, {0} };
300static struct scc_dma_state scc_state_wr_28[] = { {-1} };
301static struct scc_dma_state scc_state_rd_29[] = { {0}, {0}, {0} };
302static struct scc_dma_state scc_state_wr_29[] = { {-1} };
303static struct scc_dma_state scc_state_rd_30[] = { {-1} };
304static struct scc_dma_state scc_state_wr_30[] = { {0} };
305static struct scc_dma_state scc_state_rd_31[] = { {0} };
306static struct scc_dma_state scc_state_wr_31[] = { {-1} };
307static struct scc_dma_state scc_state_rd_32[] = { {0} };
308static struct scc_dma_state scc_state_wr_32[] = { {-1} };
309static struct scc_dma_state scc_state_rd_33[] = { {0}, {0} };
310static struct scc_dma_state scc_state_wr_33[] = { {-1} };
311static struct scc_dma_state scc_state_rd_34[] = { {-1} };
312static struct scc_dma_state scc_state_wr_34[] = { {0}, {0}, {0} };
313static struct scc_dma_state scc_state_rd_35[] = { {0}, {0}, {0}, {0}, {0} };
314static struct scc_dma_state scc_state_wr_35[] = { {-1} };
315static struct scc_dma_state scc_state_rd_36[] = { {-1} };
316static struct scc_dma_state scc_state_wr_36[] = { {0}, {0}, {0} };
317static struct scc_dma_state scc_state_rd_37[] = { {0}, {0}, {0}, {0} };
318static struct scc_dma_state scc_state_wr_37[] = { {0}, {0}, {0}, {0} };
319static struct scc_dma_state scc_state_rd_38[] = { {0} };
320static struct scc_dma_state scc_state_wr_38[] = { {0} };
321static struct scc_dma_state scc_state_rd_39[] = { {0} };
322static struct scc_dma_state scc_state_wr_39[] = { {0} };
323static struct scc_dma_state scc_state_rd_40[] = { {-1} };
324static struct scc_dma_state scc_state_wr_40[] = { {-1} };
325
326/* DMA state references to access from the driver */
327static struct scc_dma_state *scc_state_rd[] = {
328 scc_state_rd_0,
329 scc_state_rd_1,
330 scc_state_rd_2,
331 scc_state_rd_3,
332 scc_state_rd_4,
333 scc_state_rd_5,
334 scc_state_rd_6,
335 scc_state_rd_7,
336 scc_state_rd_8,
337 scc_state_rd_9,
338 scc_state_rd_10,
339 scc_state_rd_11,
340 scc_state_rd_12,
341 scc_state_rd_13,
342 scc_state_rd_14,
343 scc_state_rd_15,
344 scc_state_rd_16,
345 scc_state_rd_17,
346 scc_state_rd_18,
347 scc_state_rd_19,
348 scc_state_rd_20,
349 scc_state_rd_21,
350 scc_state_rd_22,
351 scc_state_rd_23,
352 scc_state_rd_24,
353 scc_state_rd_25,
354 scc_state_rd_26,
355 scc_state_rd_27,
356 scc_state_rd_28,
357 scc_state_rd_29,
358 scc_state_rd_30,
359 scc_state_rd_31,
360 scc_state_rd_32,
361 scc_state_rd_33,
362 scc_state_rd_34,
363 scc_state_rd_35,
364 scc_state_rd_36,
365 scc_state_rd_37,
366 scc_state_rd_38,
367 scc_state_rd_39,
368 scc_state_rd_40,
369};
370
371static struct scc_dma_state *scc_state_wr[] = {
372 scc_state_wr_0,
373 scc_state_wr_1,
374 scc_state_wr_2,
375 scc_state_wr_3,
376 scc_state_wr_4,
377 scc_state_wr_5,
378 scc_state_wr_6,
379 scc_state_wr_7,
380 scc_state_wr_8,
381 scc_state_wr_9,
382 scc_state_wr_10,
383 scc_state_wr_11,
384 scc_state_wr_12,
385 scc_state_wr_13,
386 scc_state_wr_14,
387 scc_state_wr_15,
388 scc_state_wr_16,
389 scc_state_wr_17,
390 scc_state_wr_18,
391 scc_state_wr_19,
392 scc_state_wr_20,
393 scc_state_wr_21,
394 scc_state_wr_22,
395 scc_state_wr_23,
396 scc_state_wr_24,
397 scc_state_wr_25,
398 scc_state_wr_26,
399 scc_state_wr_27,
400 scc_state_wr_28,
401 scc_state_wr_29,
402 scc_state_wr_30,
403 scc_state_wr_31,
404 scc_state_wr_32,
405 scc_state_wr_33,
406 scc_state_wr_34,
407 scc_state_wr_35,
408 scc_state_wr_36,
409 scc_state_wr_37,
410 scc_state_wr_38,
411 scc_state_wr_39,
412 scc_state_wr_40,
413};
414
415static u32 scc_takeover_mode = SCC_TO_IMMEDIATE;
416
417/* Change mode of the SPDMA for given direction */
418static u32 scc_agu_mode_sp = AGU_BYPASS;
419
420/* Change mode of the USB for given direction */
421static u32 scc_agu_mode_usb = AGU_BYPASS;
422
423static union scc_softwareconfiguration scc_software_configuration[SCC_MAX];
424
425static u32 dma_fsm[4][4] = {
426 /* DMA_CMD_RESET DMA_CMD_SETUP DMA_CMD_START DMA_CMD_STOP */
427 /* DMA_STATE_RESET */
428 {DMA_STATE_RESET, DMA_STATE_SETUP, DMA_STATE_ERROR, DMA_STATE_ERROR},
429 /* DMA_STATE_SETUP */
430 {DMA_STATE_RESET, DMA_STATE_SETUP, DMA_STATE_START, DMA_STATE_SETUP},
431 /* DMA_STATE_START */
432 {DMA_STATE_RESET, DMA_STATE_ERROR, DMA_STATE_START, DMA_STATE_SETUP},
433 /* DMA_STATE_ERROR */
434 {DMA_STATE_RESET, DMA_STATE_ERROR, DMA_STATE_ERROR, DMA_STATE_ERROR},
435};
436
437static void dma_state_process(struct scc_dma_state *dma_state, u32 cmd)
438{
439 dma_state->dma_status = dma_fsm[dma_state->dma_status][cmd];
440 dma_state->dma_cmd = cmd;
441}
442
443static void dma_state_process_dma_command(struct scc_dma_state *dma_state,
444 u32 dma_cmd)
445{
446 dma_state->dma_cmd = dma_cmd;
447 switch (dma_cmd) {
448 case DMA_START:
449 case DMA_START_FH_RESET:
450 dma_state_process(dma_state, DMA_CMD_START);
451 break;
452 case DMA_STOP:
453 dma_state_process(dma_state, DMA_CMD_STOP);
454 break;
455 default:
456 break;
457 }
458}
459
460static void scc_takeover_dma(enum scc_id id, u32 dma_id, u32 drs)
461{
462 union scc_cmd dma_cmd;
463
464 dma_cmd.reg = 0;
465
466 /* Prepare the takeover for the DMA channel */
467 dma_cmd.bits.action = DMA_TAKEOVER;
468 dma_cmd.bits.id = dma_id;
469 dma_cmd.bits.rid = TO_DMA_CFG; /* this is DMA_CFG register takeover */
470 if (drs == DMA_WRITE)
471 dma_cmd.bits.drs = DMA_WRITE;
472
473 reg_write(SCC_CMD(scc_descriptor_table[id].base_address), dma_cmd.reg);
474}
475
476int scc_dma_cmd(enum scc_id id, u32 cmd, u32 dma_id, u32 drs)
477{
478 union scc_cmd dma_cmd;
479 struct scc_dma_state *dma_state;
480
481 if ((id >= SCC_MAX) || (id < 0))
482 return -EINVAL;
483
484 dma_cmd.reg = 0;
485
486 /* Prepare the takeover for the DMA channel */
487 dma_cmd.bits.action = cmd;
488 dma_cmd.bits.id = dma_id;
489 if (drs == DMA_WRITE) {
490 dma_cmd.bits.drs = DMA_WRITE;
491 dma_state = &scc_state_wr[id][dma_id];
492 } else {
493 dma_state = &scc_state_rd[id][dma_id];
494 }
495
496 dma_state->scc_id = id;
497 dma_state->dma_id = dma_id;
498 dma_state_process_dma_command(dma_state, cmd);
499
500 reg_write(SCC_CMD(scc_descriptor_table[id].base_address), dma_cmd.reg);
501
502 return 0;
503}
504
505int scc_set_usb_address_generation_mode(u32 agu_mode)
506{
507 if (AGU_ACTIVE == agu_mode) {
508 /* Ensure both DMAs are stopped */
509 scc_dma_cmd(SCC_USB_RW, DMA_STOP, 0, DMA_WRITE);
510 scc_dma_cmd(SCC_USB_RW, DMA_STOP, 0, DMA_READ);
511 } else {
512 agu_mode = AGU_BYPASS;
513 }
514
515 scc_agu_mode_usb = agu_mode;
516
517 return 0;
518}
519
520int scc_setup_dma(enum scc_id id, u32 buffer_tag,
521 u32 type, u32 fh_mode, u32 drs, u32 dma_id)
522{
523 struct scc_dma_state *dma_state;
524 int return_value = 0;
525 union scc_dma_cfg dma_cfg;
Heinrich Schuchardtdbf4b762018-03-18 23:43:43 +0100[diff] [blame]526 u32 *buffer_tag_list;
Stefan Roeseae691e52009-01-21 17:24:49 +0100[diff] [blame]527 u32 tag_count, t, t_valid;
528
529 if ((id >= SCC_MAX) || (id < 0))
530 return -EINVAL;
531
Heinrich Schuchardtdbf4b762018-03-18 23:43:43 +0100[diff] [blame]532 buffer_tag_list = scc_descriptor_table[id].buffer_tag_list;
533
Stefan Roeseae691e52009-01-21 17:24:49 +0100[diff] [blame]534 /* if the register is only configured by hw, cannot write! */
535 if (1 == scc_descriptor_table[id].hw_dma_cfg)
536 return -EACCES;
537
538 if (DMA_WRITE == drs) {
539 if (dma_id >= scc_descriptor_table[id].p_dma_channels_wr)
540 return -EINVAL;
541 dma_state = &scc_state_wr[id][dma_id];
542 } else {
543 if (dma_id >= scc_descriptor_table[id].p_dma_channels_rd)
544 return -EINVAL;
545 dma_state = &scc_state_rd[id][dma_id];
546 }
547
548 /* Compose the DMA configuration register */
549 tag_count = buffer_tag_list[0];
550 t_valid = 0;
551 for (t = 1; t <= tag_count; t++) {
552 if (buffer_tag == buffer_tag_list[t]) {
553 /* Tag found - validate */
554 t_valid = 1;
555 break;
556 }
557 }
558
559 if (!t_valid)
560 return -EACCES;
561
562 /*
563 * Read the register first -- two functions write into the register
564 * it does not make sense to read the DMA config back, because there
565 * are two register configuration sets (drs)
566 */
567 dma_cfg.reg = 0;
568 dma_cfg.bits.buffer_id = buffer_tag;
569 dma_state_process(dma_state, DMA_CMD_SETUP);
570
571 /*
572 * This is Packet CFG set select - usable for TSIO, EBI and those SCCs
573 * which habe 2 packet configs
574 */
575 dma_cfg.bits.packet_cfg_id =
576 scc_software_configuration[id].bits.packet_select;
577
578 if (type == DMA_CYCLIC)
579 dma_cfg.bits.buffer_type = 1;
580 else
581 dma_cfg.bits.buffer_type = 0;
582
583 if (fh_mode == USE_FH)
584 dma_cfg.bits.fh_mode = 1;
585 else
586 dma_cfg.bits.fh_mode = 0;
587
588 if (id == SCC_CPU1_SPDMA_RW)
589 dma_cfg.bits.agu_mode = scc_agu_mode_sp;
590
591 if (id == SCC_USB_RW)
592 dma_cfg.bits.agu_mode = scc_agu_mode_usb;
593
594 reg_write(SCC_DMA_CFG(scc_descriptor_table[id].base_address),
595 dma_cfg.reg);
596
597 /* The DMA_CFG needs a takeover! */
598 if (SCC_TO_IMMEDIATE == scc_takeover_mode)
599 scc_takeover_dma(id, dma_id, drs);
600
601 /* if (buffer_tag is not used) */
602 dma_state->buffer_tag = buffer_tag;
603
604 dma_state->scc_id = id;
605 dma_state->dma_id = dma_id;
606
607 return return_value;
608}
609
610int scc_enable(enum scc_id id, u32 value)
611{
612 if ((id >= SCC_MAX) || (id < 0))
613 return -EINVAL;
614
615 if (value == 0) {
616 scc_software_configuration[id].bits.enable_status = 0;
617 } else {
618 value = 1;
619 scc_software_configuration[id].bits.enable_status = 1;
620 }
621 reg_write(SCC_ENABLE(scc_descriptor_table[id].base_address), value);
622
623 return 0;
624}
625
626static inline void ehb(void)
627{
628 __asm__ __volatile__(
629 " .set mips32r2 \n"
630 " ehb \n"
631 " .set mips0 \n");
632}
633
634int scc_reset(enum scc_id id, u32 value)
635{
636 if ((id >= SCC_MAX) || (id < 0))
637 return -EINVAL;
638
639 /* Invert value to the strait logic from the negative hardware logic */
640 if (value == 0)
641 value = 1;
642 else
643 value = 0;
644
645 /* Write the value to the register */
646 reg_write(SCC_RESET(scc_descriptor_table[id].base_address), value);
647
648 /* sync flush */
649 asm("sync"); /* request bus write queue flush */
650 ehb(); /* wait until previous bus commit instr has finished */
651 asm("nop"); /* wait for flush to occur */
652 asm("nop"); /* wait for flush to occur */
653
654 udelay(100);
655
656 return 0;
657}