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u-boot-brain/board/micronas/vct/scc.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

658 lines
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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2009 Stefan Roese <sr@denx.de>, DENX Software Engineering
*
* Copyright (C) 2006 Micronas GmbH
*/
#include <common.h>
#include <linux/errno.h>
#include "vct.h"
/*
* List of statically defined buffers per SCC.
* The first entry in the table is the number of fixed buffers
* followed by the list of buffer IDs
*/
static u32 buffer_list_0[] = { 6, 120, 121, 122, 123, 139, 140 };
static u32 buffer_list_1[] = { 6, 120, 121, 122, 123, 139, 140 };
static u32 buffer_list_2[] = { 5, 124, 125, 126, 139, 140 };
static u32 buffer_list_3[] = { 5, 124, 125, 126, 139, 140 };
static u32 buffer_list_4[] = { 5, 124, 125, 126, 139, 140 };
static u32 buffer_list_5[] = { 3, 127, 139, 140 };
static u32 buffer_list_6[] = { 3, 127, 139, 140 };
static u32 buffer_list_7[] = { 6, 128, 129, 130, 131, 139, 140 };
static u32 buffer_list_8[] = { 6, 128, 129, 130, 131, 139, 140 };
static u32 buffer_list_9[] = { 5, 124, 125, 126, 139, 140 };
static u32 buffer_list_10[] = { 5, 124, 125, 126, 139, 140 };
static u32 buffer_list_11[] = { 5, 124, 125, 126, 139, 140 };
static u32 buffer_list_12[] = { 6, 132, 133, 134, 135, 139, 140 };
static u32 buffer_list_13[] = { 6, 132, 133, 134, 135, 139, 140 };
static u32 buffer_list_14[] = { 4, 137, 138, 139, 140 };
static u32 buffer_list_15[] = { 6, 136, 136, 137, 138, 139, 140 };
/** Issue#7674 (new) - DP/DVP buffer assignment */
static u32 buffer_list_16[] = { 6, 106, 108, 109, 107, 139, 140 };
static u32 buffer_list_17[] = { 6, 106, 110, 107, 111, 139, 140 };
static u32 buffer_list_18[] = { 6, 106, 113, 107, 114, 139, 140 };
static u32 buffer_list_19[] = { 3, 112, 139, 140 };
static u32 buffer_list_20[] = { 35, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
79, 80, 81, 82, 83, 84, 85, 86, 139, 140 };
static u32 buffer_list_21[] = { 27, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
139, 140 };
static u32 buffer_list_22[] = { 81, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36,
37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60,
61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72,
73, 74, 75, 76, 77, 78, 139, 140 };
static u32 buffer_list_23[] = { 29, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
88, 89, 139, 140 };
static u32 buffer_list_24[] = { 6, 90, 91, 92, 93, 139, 140 };
static u32 buffer_list_25[] = { 18, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99,
100, 101, 102, 103, 104, 105, 139, 140 };
static u32 buffer_list_26[] = { 5, 94, 95, 96, 139, 140 };
static u32 buffer_list_27[] = { 5, 97, 98, 99, 139, 140 };
static u32 buffer_list_28[] = { 5, 100, 101, 102, 139, 140 };
static u32 buffer_list_29[] = { 5, 103, 104, 105, 139, 140 };
static u32 buffer_list_30[] = { 10, 108, 109, 110, 111, 113, 114, 116, 117,
139, 140 };
static u32 buffer_list_31[] = { 13, 106, 107, 108, 109, 110, 111, 113, 114,
115, 116, 117, 139, 140 };
static u32 buffer_list_32[] = { 13, 106, 107, 108, 109, 110, 111, 113, 114,
115, 116, 117, 139, 140 };
static u32 buffer_list_33[] = { 27, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
139, 140 };
static u32 buffer_list_34[] = { 27, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
139, 140 };
static u32 buffer_list_35[] = { 28, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
87, 139, 140 };
static u32 buffer_list_36[] = { 28, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
87, 139, 140 };
static u32 buffer_list_37[] = { 27, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
139, 140 };
static u32 buffer_list_38[] = { 29, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
118, 119, 139, 140 };
static u32 buffer_list_39[] = { 91, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36,
37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60,
61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72,
73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84,
85, 86, 118, 119, 139, 140 };
static u32 buffer_list_40[] = { 0 };
/*
* List of statically defined vcid.csize values.
* The first entry in the table is the number of possible csize values
* followed by the list of data path values in bits.
*/
static u32 csize_list_0[] = { 2, 0, 1 };
static u32 csize_list_1[] = { 2, 0, 1 };
static u32 csize_list_2[] = { 1, 1 };
static u32 csize_list_3[] = { 1, 1 };
static u32 csize_list_4[] = { 1, 1 };
static u32 csize_list_5[] = { 1, 0 };
static u32 csize_list_6[] = { 1, 0 };
static u32 csize_list_7[] = { 1, 1 };
static u32 csize_list_8[] = { 1, 1 };
static u32 csize_list_9[] = { 1, 1 };
static u32 csize_list_10[] = { 1, 1 };
static u32 csize_list_11[] = { 1, 1 };
static u32 csize_list_12[] = { 1, 1 };
static u32 csize_list_13[] = { 1, 1 };
static u32 csize_list_14[] = { 1, 2 };
static u32 csize_list_15[] = { 1, 4 };
static u32 csize_list_16[] = { 3, 0, 1, 2 };
static u32 csize_list_17[] = { 3, 0, 1, 2 };
static u32 csize_list_18[] = { 3, 0, 1, 2 };
static u32 csize_list_19[] = { 1, 2 };
static u32 csize_list_20[] = { 1, 0 };
static u32 csize_list_21[] = { 1, 0 };
static u32 csize_list_22[] = { 1, 2 };
static u32 csize_list_23[] = { 1, 3 };
static u32 csize_list_24[] = { 1, 3 };
static u32 csize_list_25[] = { 1, 3 };
static u32 csize_list_26[] = { 1, 0 };
static u32 csize_list_27[] = { 1, 0 };
static u32 csize_list_28[] = { 1, 0 };
static u32 csize_list_29[] = { 1, 0 };
static u32 csize_list_30[] = { 1, 2 };
static u32 csize_list_31[] = { 1, 2 };
static u32 csize_list_32[] = { 1, 2 };
static u32 csize_list_33[] = { 1, 2 };
static u32 csize_list_34[] = { 1, 2 };
static u32 csize_list_35[] = { 1, 2 };
static u32 csize_list_36[] = { 1, 2 };
static u32 csize_list_37[] = { 2, 0, 1 };
static u32 csize_list_38[] = { 1, 2 };
static u32 csize_list_39[] = { 1, 3 };
static u32 csize_list_40[] = { 1, 3 };
/*
* SCC_Configuration table
*/
static const struct scc_descriptor scc_descriptor_table[] = {
/* scn scc_name profile SCC scc_id mci_id rd wr m p fh si cfg sta */
{"fe_", "fe_3dcomb_wr", STRM_P, SCC0_BASE, 0, 0, 0, 4, 1, 1, 0, 0, 0, 1,
buffer_list_0, csize_list_0},
{"fe_", "fe_3dcomb_rd", STRM_P, SCC1_BASE, 1, 18, 4, 0, 1, 1, 0, 1, 0,
1, buffer_list_1, csize_list_1},
{"di_", "di_tnr_wr", STRM_P, SCC2_BASE, 2, 1, 0, 3, 1, 1, 0, 2, 0, 1,
buffer_list_2, csize_list_2},
{"di_", "di_tnr_field_rd", STRM_P, SCC3_BASE, 3, 19, 3, 0, 1, 1, 0, 3,
0, 1, buffer_list_3, csize_list_3},
{"di_", "di_tnr_frame_rd", STRM_P, SCC4_BASE, 4, 20, 3, 0, 1, 1, 0, 4,
0, 1, buffer_list_4, csize_list_4},
{"di_", "di_mval_wr", STRM_P, SCC5_BASE, 5, 2, 0, 1, 1, 1, 0, 5, 0, 1,
buffer_list_5, csize_list_5},
{"di_", "di_mval_rd", STRM_P, SCC6_BASE, 6, 21, 1, 0, 1, 1, 0, 6, 0, 1,
buffer_list_6, csize_list_6},
{"rc_", "rc_frame_wr", STRM_P, SCC7_BASE, 7, 3, 0, 4, 1, 1, 0, 7, 0, 1,
buffer_list_7, csize_list_7},
{"rc_", "rc_frame0_rd", STRM_P, SCC8_BASE, 8, 22, 4, 0, 1, 1, 0, 8, 0,
1, buffer_list_8, csize_list_8},
{"opt", "opt_field0_rd", STRM_P, SCC9_BASE, 9, 23, 3, 0, 1, 1, 0, 9, 0,
1, buffer_list_9, csize_list_9},
{"opt", "opt_field1_rd", STRM_P, SCC10_BASE, 10, 24, 3, 0, 1, 1, 0, 10,
0, 1, buffer_list_10, csize_list_10},
{"opt", "opt_field2_rd", STRM_P, SCC11_BASE, 11, 25, 3, 0, 1, 1, 0, 11,
0, 1, buffer_list_11, csize_list_11},
{"pip", "pip_frame_wr", STRM_P, SCC12_BASE, 12, 4, 0, 4, 1, 1, 0, 12, 0,
1, buffer_list_12, csize_list_12},
{"pip", "pip_frame_rd", STRM_P, SCC13_BASE, 13, 26, 4, 0, 1, 1, 0, 13,
0, 1, buffer_list_13, csize_list_13},
{"dp_", "dp_agpu_rd", STRM_P, SCC14_BASE, 14, 27, 2, 0, 2, 1, 0, 14, 0,
1, buffer_list_14, csize_list_14},
{"ewa", "ewarp_rw", SRMD, SCC15_BASE, 15, 11, 1, 1, 0, 0, 0, -1, 0, 0,
buffer_list_15, csize_list_15},
{"dp_", "dp_osd_rd", STRM_P, SCC16_BASE, 16, 28, 3, 0, 2, 1, 0, 15, 0,
1, buffer_list_16, csize_list_16},
{"dp_", "dp_graphic_rd", STRM_P, SCC17_BASE, 17, 29, 3, 0, 2, 1, 0, 16,
0, 1, buffer_list_17, csize_list_17},
{"dvp", "dvp_osd_rd", STRM_P, SCC18_BASE, 18, 30, 2, 0, 2, 1, 0, 17, 0,
1, buffer_list_18, csize_list_18},
{"dvp", "dvp_vbi_rd", STRM_D, SCC19_BASE, 19, 31, 1, 0, 0, 1, 0, -1, 0,
0, buffer_list_19, csize_list_19},
{"tsi", "tsio_wr", STRM_P, SCC20_BASE, 20, 5, 0, 8, 2, 1, 1, -1, 0, 0,
buffer_list_20, csize_list_20},
{"tsi", "tsio_rd", STRM_P, SCC21_BASE, 21, 32, 4, 0, 2, 1, 1, -1, 0, 0,
buffer_list_21, csize_list_21},
{"tsd", "tsd_wr", SRMD, SCC22_BASE, 22, 6, 0, 64, 0, 0, 1, -1, 0, 0,
buffer_list_22, csize_list_22},
{"vd_", "vd_ud_st_rw", SRMD, SCC23_BASE, 23, 12, 2, 2, 0, 0, 1, -1, 0,
0, buffer_list_23, csize_list_23},
{"vd_", "vd_frr_rd", SRMD, SCC24_BASE, 24, 33, 4, 0, 0, 0, 0, -1, 0, 0,
buffer_list_24, csize_list_24},
{"vd_", "vd_frw_disp_wr", SRMD, SCC25_BASE, 25, 7, 0, 16, 0, 0, 0, -1,
0, 0, buffer_list_25, csize_list_25},
{"mr_", "mr_vd_m_y_rd", STRM_P, SCC26_BASE, 26, 34, 3, 0, 2, 1, 0, 18,
0, 1, buffer_list_26, csize_list_26},
{"mr_", "mr_vd_m_c_rd", STRM_P, SCC27_BASE, 27, 35, 3, 0, 2, 1, 0, 19,
0, 1, buffer_list_27, csize_list_27},
{"mr_", "mr_vd_s_y_rd", STRM_P, SCC28_BASE, 28, 36, 3, 0, 2, 1, 0, 20,
0, 1, buffer_list_28, csize_list_28},
{"mr_", "mr_vd_s_c_rd", STRM_P, SCC29_BASE, 29, 37, 3, 0, 2, 1, 0, 21,
0, 1, buffer_list_29, csize_list_29},
{"ga_", "ga_wr", STRM_P, SCC30_BASE, 30, 8, 0, 1, 1, 1, 0, -1, 1, 1,
buffer_list_30, csize_list_30},
{"ga_", "ga_src1_rd", STRM_P, SCC31_BASE, 31, 38, 1, 0, 1, 1, 0, -1, 1,
1, buffer_list_31, csize_list_31},
{"ga_", "ga_src2_rd", STRM_P, SCC32_BASE, 32, 39, 1, 0, 1, 1, 0, -1, 1,
1, buffer_list_32, csize_list_32},
{"ad_", "ad_rd", STRM_D, SCC33_BASE, 33, 40, 2, 0, 0, 1, 1, -1, 0, 0,
buffer_list_33, csize_list_33},
{"ad_", "ad_wr", STRM_D, SCC34_BASE, 34, 9, 0, 3, 0, 1, 1, -1, 0, 0,
buffer_list_34, csize_list_34},
{"abp", "abp_rd", STRM_D, SCC35_BASE, 35, 41, 5, 0, 0, 1, 1, -1, 0, 0,
buffer_list_35, csize_list_35},
{"abp", "abp_wr", STRM_D, SCC36_BASE, 36, 10, 0, 3, 0, 1, 1, -1, 0, 0,
buffer_list_36, csize_list_36},
{"ebi", "ebi_rw", STRM_P, SCC37_BASE, 37, 13, 4, 4, 2, 1, 1, -1, 0, 0,
buffer_list_37, csize_list_37},
{"usb", "usb_rw", SRMD, SCC38_BASE, 38, 14, 1, 1, 0, 0, 1, -1, 0, 0,
buffer_list_38, csize_list_38},
{"cpu", "cpu1_spdma_rw", SRMD, SCC39_BASE, 39, 15, 1, 1, 0, 0, 1, -1, 0,
0, buffer_list_39, csize_list_39},
{"cpu", "cpu1_bridge_rw", SRMD, SCC40_BASE, 40, 16, 0, 0, 0, 0, 0, -1,
0, 0, buffer_list_40, csize_list_40},
};
/* DMA state structures for read and write channels for each SCC */
static struct scc_dma_state scc_state_rd_0[] = { {-1} };
static struct scc_dma_state scc_state_wr_0[] = { {0}, {0}, {0}, {0} };
static struct scc_dma_state scc_state_rd_1[] = { {0}, {0}, {0}, {0} };
static struct scc_dma_state scc_state_wr_1[] = { {-1} };
static struct scc_dma_state scc_state_rd_2[] = { {-1} };
static struct scc_dma_state scc_state_wr_2[] = { {0}, {0}, {0} };
static struct scc_dma_state scc_state_rd_3[] = { {0}, {0}, {0} };
static struct scc_dma_state scc_state_wr_3[] = { {-1} };
static struct scc_dma_state scc_state_rd_4[] = { {0}, {0}, {0} };
static struct scc_dma_state scc_state_wr_4[] = { {-1} };
static struct scc_dma_state scc_state_rd_5[] = { {-1} };
static struct scc_dma_state scc_state_wr_5[] = { {0} };
static struct scc_dma_state scc_state_rd_6[] = { {0} };
static struct scc_dma_state scc_state_wr_6[] = { {-1} };
static struct scc_dma_state scc_state_rd_7[] = { {-1} };
static struct scc_dma_state scc_state_wr_7[] = { {0}, {0}, {0}, {0} };
static struct scc_dma_state scc_state_rd_8[] = { {0}, {0}, {0}, {0} };
static struct scc_dma_state scc_state_wr_8[] = { {-1} };
static struct scc_dma_state scc_state_rd_9[] = { {0}, {0}, {0}, };
static struct scc_dma_state scc_state_wr_9[] = { {-1} };
static struct scc_dma_state scc_state_rd_10[] = { {0}, {0}, {0} };
static struct scc_dma_state scc_state_wr_10[] = { {-1} };
static struct scc_dma_state scc_state_rd_11[] = { {0}, {0}, {0} };
static struct scc_dma_state scc_state_wr_11[] = { {-1} };
static struct scc_dma_state scc_state_rd_12[] = { {-1} };
static struct scc_dma_state scc_state_wr_12[] = { {0}, {0}, {0}, {0} };
static struct scc_dma_state scc_state_rd_13[] = { {0}, {0}, {0}, {0} };
static struct scc_dma_state scc_state_wr_13[] = { {-1} };
static struct scc_dma_state scc_state_rd_14[] = { {0}, {0} };
static struct scc_dma_state scc_state_wr_14[] = { {-1} };
static struct scc_dma_state scc_state_rd_15[] = { {0} };
static struct scc_dma_state scc_state_wr_15[] = { {0} };
static struct scc_dma_state scc_state_rd_16[] = { {0}, {0}, {0} };
static struct scc_dma_state scc_state_wr_16[] = { {-1} };
static struct scc_dma_state scc_state_rd_17[] = { {0}, {0}, {0} };
static struct scc_dma_state scc_state_wr_17[] = { {-1} };
static struct scc_dma_state scc_state_rd_18[] = { {0}, {0} };
static struct scc_dma_state scc_state_wr_18[] = { {-1} };
static struct scc_dma_state scc_state_rd_19[] = { {0} };
static struct scc_dma_state scc_state_wr_19[] = { {-1} };
static struct scc_dma_state scc_state_rd_20[] = { {-1} };
static struct scc_dma_state scc_state_wr_20[] = {
{0}, {0}, {0}, {0}, {0}, {0}, {0}, {0} };
static struct scc_dma_state scc_state_rd_21[] = { {0}, {0}, {0}, {0} };
static struct scc_dma_state scc_state_wr_21[] = { {-1} };
static struct scc_dma_state scc_state_rd_22[] = { {-1} };
static struct scc_dma_state scc_state_wr_22[] = {
{0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0},
{0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0},
{0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0},
{0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0},
{0}, {0}, {0}, {0}, {0}, {0}, {0}, {0} };
static struct scc_dma_state scc_state_rd_23[] = { {0}, {0} };
static struct scc_dma_state scc_state_wr_23[] = { {0}, {0} };
static struct scc_dma_state scc_state_rd_24[] = { {0}, {0}, {0}, {0} };
static struct scc_dma_state scc_state_wr_24[] = { {-1} };
static struct scc_dma_state scc_state_rd_25[] = { {-1} };
static struct scc_dma_state scc_state_wr_25[] = {
{0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0},
{0}, {0} };
static struct scc_dma_state scc_state_rd_26[] = { {0}, {0}, {0} };
static struct scc_dma_state scc_state_wr_26[] = { {-1} };
static struct scc_dma_state scc_state_rd_27[] = { {0}, {0}, {0} };
static struct scc_dma_state scc_state_wr_27[] = { {-1} };
static struct scc_dma_state scc_state_rd_28[] = { {0}, {0}, {0} };
static struct scc_dma_state scc_state_wr_28[] = { {-1} };
static struct scc_dma_state scc_state_rd_29[] = { {0}, {0}, {0} };
static struct scc_dma_state scc_state_wr_29[] = { {-1} };
static struct scc_dma_state scc_state_rd_30[] = { {-1} };
static struct scc_dma_state scc_state_wr_30[] = { {0} };
static struct scc_dma_state scc_state_rd_31[] = { {0} };
static struct scc_dma_state scc_state_wr_31[] = { {-1} };
static struct scc_dma_state scc_state_rd_32[] = { {0} };
static struct scc_dma_state scc_state_wr_32[] = { {-1} };
static struct scc_dma_state scc_state_rd_33[] = { {0}, {0} };
static struct scc_dma_state scc_state_wr_33[] = { {-1} };
static struct scc_dma_state scc_state_rd_34[] = { {-1} };
static struct scc_dma_state scc_state_wr_34[] = { {0}, {0}, {0} };
static struct scc_dma_state scc_state_rd_35[] = { {0}, {0}, {0}, {0}, {0} };
static struct scc_dma_state scc_state_wr_35[] = { {-1} };
static struct scc_dma_state scc_state_rd_36[] = { {-1} };
static struct scc_dma_state scc_state_wr_36[] = { {0}, {0}, {0} };
static struct scc_dma_state scc_state_rd_37[] = { {0}, {0}, {0}, {0} };
static struct scc_dma_state scc_state_wr_37[] = { {0}, {0}, {0}, {0} };
static struct scc_dma_state scc_state_rd_38[] = { {0} };
static struct scc_dma_state scc_state_wr_38[] = { {0} };
static struct scc_dma_state scc_state_rd_39[] = { {0} };
static struct scc_dma_state scc_state_wr_39[] = { {0} };
static struct scc_dma_state scc_state_rd_40[] = { {-1} };
static struct scc_dma_state scc_state_wr_40[] = { {-1} };
/* DMA state references to access from the driver */
static struct scc_dma_state *scc_state_rd[] = {
scc_state_rd_0,
scc_state_rd_1,
scc_state_rd_2,
scc_state_rd_3,
scc_state_rd_4,
scc_state_rd_5,
scc_state_rd_6,
scc_state_rd_7,
scc_state_rd_8,
scc_state_rd_9,
scc_state_rd_10,
scc_state_rd_11,
scc_state_rd_12,
scc_state_rd_13,
scc_state_rd_14,
scc_state_rd_15,
scc_state_rd_16,
scc_state_rd_17,
scc_state_rd_18,
scc_state_rd_19,
scc_state_rd_20,
scc_state_rd_21,
scc_state_rd_22,
scc_state_rd_23,
scc_state_rd_24,
scc_state_rd_25,
scc_state_rd_26,
scc_state_rd_27,
scc_state_rd_28,
scc_state_rd_29,
scc_state_rd_30,
scc_state_rd_31,
scc_state_rd_32,
scc_state_rd_33,
scc_state_rd_34,
scc_state_rd_35,
scc_state_rd_36,
scc_state_rd_37,
scc_state_rd_38,
scc_state_rd_39,
scc_state_rd_40,
};
static struct scc_dma_state *scc_state_wr[] = {
scc_state_wr_0,
scc_state_wr_1,
scc_state_wr_2,
scc_state_wr_3,
scc_state_wr_4,
scc_state_wr_5,
scc_state_wr_6,
scc_state_wr_7,
scc_state_wr_8,
scc_state_wr_9,
scc_state_wr_10,
scc_state_wr_11,
scc_state_wr_12,
scc_state_wr_13,
scc_state_wr_14,
scc_state_wr_15,
scc_state_wr_16,
scc_state_wr_17,
scc_state_wr_18,
scc_state_wr_19,
scc_state_wr_20,
scc_state_wr_21,
scc_state_wr_22,
scc_state_wr_23,
scc_state_wr_24,
scc_state_wr_25,
scc_state_wr_26,
scc_state_wr_27,
scc_state_wr_28,
scc_state_wr_29,
scc_state_wr_30,
scc_state_wr_31,
scc_state_wr_32,
scc_state_wr_33,
scc_state_wr_34,
scc_state_wr_35,
scc_state_wr_36,
scc_state_wr_37,
scc_state_wr_38,
scc_state_wr_39,
scc_state_wr_40,
};
static u32 scc_takeover_mode = SCC_TO_IMMEDIATE;
/* Change mode of the SPDMA for given direction */
static u32 scc_agu_mode_sp = AGU_BYPASS;
/* Change mode of the USB for given direction */
static u32 scc_agu_mode_usb = AGU_BYPASS;
static union scc_softwareconfiguration scc_software_configuration[SCC_MAX];
static u32 dma_fsm[4][4] = {
/* DMA_CMD_RESET DMA_CMD_SETUP DMA_CMD_START DMA_CMD_STOP */
/* DMA_STATE_RESET */
{DMA_STATE_RESET, DMA_STATE_SETUP, DMA_STATE_ERROR, DMA_STATE_ERROR},
/* DMA_STATE_SETUP */
{DMA_STATE_RESET, DMA_STATE_SETUP, DMA_STATE_START, DMA_STATE_SETUP},
/* DMA_STATE_START */
{DMA_STATE_RESET, DMA_STATE_ERROR, DMA_STATE_START, DMA_STATE_SETUP},
/* DMA_STATE_ERROR */
{DMA_STATE_RESET, DMA_STATE_ERROR, DMA_STATE_ERROR, DMA_STATE_ERROR},
};
static void dma_state_process(struct scc_dma_state *dma_state, u32 cmd)
{
dma_state->dma_status = dma_fsm[dma_state->dma_status][cmd];
dma_state->dma_cmd = cmd;
}
static void dma_state_process_dma_command(struct scc_dma_state *dma_state,
u32 dma_cmd)
{
dma_state->dma_cmd = dma_cmd;
switch (dma_cmd) {
case DMA_START:
case DMA_START_FH_RESET:
dma_state_process(dma_state, DMA_CMD_START);
break;
case DMA_STOP:
dma_state_process(dma_state, DMA_CMD_STOP);
break;
default:
break;
}
}
static void scc_takeover_dma(enum scc_id id, u32 dma_id, u32 drs)
{
union scc_cmd dma_cmd;
dma_cmd.reg = 0;
/* Prepare the takeover for the DMA channel */
dma_cmd.bits.action = DMA_TAKEOVER;
dma_cmd.bits.id = dma_id;
dma_cmd.bits.rid = TO_DMA_CFG; /* this is DMA_CFG register takeover */
if (drs == DMA_WRITE)
dma_cmd.bits.drs = DMA_WRITE;
reg_write(SCC_CMD(scc_descriptor_table[id].base_address), dma_cmd.reg);
}
int scc_dma_cmd(enum scc_id id, u32 cmd, u32 dma_id, u32 drs)
{
union scc_cmd dma_cmd;
struct scc_dma_state *dma_state;
if ((id >= SCC_MAX) || (id < 0))
return -EINVAL;
dma_cmd.reg = 0;
/* Prepare the takeover for the DMA channel */
dma_cmd.bits.action = cmd;
dma_cmd.bits.id = dma_id;
if (drs == DMA_WRITE) {
dma_cmd.bits.drs = DMA_WRITE;
dma_state = &scc_state_wr[id][dma_id];
} else {
dma_state = &scc_state_rd[id][dma_id];
}
dma_state->scc_id = id;
dma_state->dma_id = dma_id;
dma_state_process_dma_command(dma_state, cmd);
reg_write(SCC_CMD(scc_descriptor_table[id].base_address), dma_cmd.reg);
return 0;
}
int scc_set_usb_address_generation_mode(u32 agu_mode)
{
if (AGU_ACTIVE == agu_mode) {
/* Ensure both DMAs are stopped */
scc_dma_cmd(SCC_USB_RW, DMA_STOP, 0, DMA_WRITE);
scc_dma_cmd(SCC_USB_RW, DMA_STOP, 0, DMA_READ);
} else {
agu_mode = AGU_BYPASS;
}
scc_agu_mode_usb = agu_mode;
return 0;
}
int scc_setup_dma(enum scc_id id, u32 buffer_tag,
u32 type, u32 fh_mode, u32 drs, u32 dma_id)
{
struct scc_dma_state *dma_state;
int return_value = 0;
union scc_dma_cfg dma_cfg;
u32 *buffer_tag_list;
u32 tag_count, t, t_valid;
if ((id >= SCC_MAX) || (id < 0))
return -EINVAL;
buffer_tag_list = scc_descriptor_table[id].buffer_tag_list;
/* if the register is only configured by hw, cannot write! */
if (1 == scc_descriptor_table[id].hw_dma_cfg)
return -EACCES;
if (DMA_WRITE == drs) {
if (dma_id >= scc_descriptor_table[id].p_dma_channels_wr)
return -EINVAL;
dma_state = &scc_state_wr[id][dma_id];
} else {
if (dma_id >= scc_descriptor_table[id].p_dma_channels_rd)
return -EINVAL;
dma_state = &scc_state_rd[id][dma_id];
}
/* Compose the DMA configuration register */
tag_count = buffer_tag_list[0];
t_valid = 0;
for (t = 1; t <= tag_count; t++) {
if (buffer_tag == buffer_tag_list[t]) {
/* Tag found - validate */
t_valid = 1;
break;
}
}
if (!t_valid)
return -EACCES;
/*
* Read the register first -- two functions write into the register
* it does not make sense to read the DMA config back, because there
* are two register configuration sets (drs)
*/
dma_cfg.reg = 0;
dma_cfg.bits.buffer_id = buffer_tag;
dma_state_process(dma_state, DMA_CMD_SETUP);
/*
* This is Packet CFG set select - usable for TSIO, EBI and those SCCs
* which habe 2 packet configs
*/
dma_cfg.bits.packet_cfg_id =
scc_software_configuration[id].bits.packet_select;
if (type == DMA_CYCLIC)
dma_cfg.bits.buffer_type = 1;
else
dma_cfg.bits.buffer_type = 0;
if (fh_mode == USE_FH)
dma_cfg.bits.fh_mode = 1;
else
dma_cfg.bits.fh_mode = 0;
if (id == SCC_CPU1_SPDMA_RW)
dma_cfg.bits.agu_mode = scc_agu_mode_sp;
if (id == SCC_USB_RW)
dma_cfg.bits.agu_mode = scc_agu_mode_usb;
reg_write(SCC_DMA_CFG(scc_descriptor_table[id].base_address),
dma_cfg.reg);
/* The DMA_CFG needs a takeover! */
if (SCC_TO_IMMEDIATE == scc_takeover_mode)
scc_takeover_dma(id, dma_id, drs);
/* if (buffer_tag is not used) */
dma_state->buffer_tag = buffer_tag;
dma_state->scc_id = id;
dma_state->dma_id = dma_id;
return return_value;
}
int scc_enable(enum scc_id id, u32 value)
{
if ((id >= SCC_MAX) || (id < 0))
return -EINVAL;
if (value == 0) {
scc_software_configuration[id].bits.enable_status = 0;
} else {
value = 1;
scc_software_configuration[id].bits.enable_status = 1;
}
reg_write(SCC_ENABLE(scc_descriptor_table[id].base_address), value);
return 0;
}
static inline void ehb(void)
{
__asm__ __volatile__(
" .set mips32r2 \n"
" ehb \n"
" .set mips0 \n");
}
int scc_reset(enum scc_id id, u32 value)
{
if ((id >= SCC_MAX) || (id < 0))
return -EINVAL;
/* Invert value to the strait logic from the negative hardware logic */
if (value == 0)
value = 1;
else
value = 0;
/* Write the value to the register */
reg_write(SCC_RESET(scc_descriptor_table[id].base_address), value);
/* sync flush */
asm("sync"); /* request bus write queue flush */
ehb(); /* wait until previous bus commit instr has finished */
asm("nop"); /* wait for flush to occur */
asm("nop"); /* wait for flush to occur */
udelay(100);
return 0;
}
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