| 1 | /* Blackfin Enhanced Parallel Port Interface (EPPI) model |
| 2 | For "new style" PPIs on BF54x/etc... parts. |
| 3 | |
| 4 | Copyright (C) 2010-2011 Free Software Foundation, Inc. |
| 5 | Contributed by Analog Devices, Inc. |
| 6 | |
| 7 | This file is part of simulators. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | #include "config.h" |
| 23 | |
| 24 | #include "sim-main.h" |
| 25 | #include "devices.h" |
| 26 | #include "dv-bfin_eppi.h" |
| 27 | #include "gui.h" |
| 28 | |
| 29 | /* XXX: TX is merely a stub. */ |
| 30 | |
| 31 | struct bfin_eppi |
| 32 | { |
| 33 | /* This top portion matches common dv_bfin struct. */ |
| 34 | bu32 base; |
| 35 | struct hw *dma_master; |
| 36 | bool acked; |
| 37 | |
| 38 | struct hw_event *handler; |
| 39 | char saved_byte; |
| 40 | int saved_count; |
| 41 | |
| 42 | /* GUI state. */ |
| 43 | void *gui_state; |
| 44 | int color; |
| 45 | |
| 46 | /* Order after here is important -- matches hardware MMR layout. */ |
| 47 | bu16 BFIN_MMR_16(status); |
| 48 | bu16 BFIN_MMR_16(hcount); |
| 49 | bu16 BFIN_MMR_16(hdelay); |
| 50 | bu16 BFIN_MMR_16(vcount); |
| 51 | bu16 BFIN_MMR_16(vdelay); |
| 52 | bu16 BFIN_MMR_16(frame); |
| 53 | bu16 BFIN_MMR_16(line); |
| 54 | bu16 BFIN_MMR_16(clkdiv); |
| 55 | bu32 control, fs1w_hbl, fs1p_avpl, fsw2_lvb, fs2p_lavf, clip, err; |
| 56 | }; |
| 57 | #define mmr_base() offsetof(struct bfin_eppi, status) |
| 58 | #define mmr_offset(mmr) (offsetof(struct bfin_eppi, mmr) - mmr_base()) |
| 59 | |
| 60 | static const char * const mmr_names[] = |
| 61 | { |
| 62 | "EPPI_STATUS", "EPPI_HCOUNT", "EPPI_HDELAY", "EPPI_VCOUNT", "EPPI_VDELAY", |
| 63 | "EPPI_FRAME", "EPPI_LINE", "EPPI_CLKDIV", "EPPI_CONTROL", "EPPI_FS1W_HBL", |
| 64 | "EPPI_FS1P_AVPL", "EPPI_FS2W_LVB", "EPPI_FS2P_LAVF", "EPPI_CLIP", "EPPI_ERR", |
| 65 | }; |
| 66 | #define mmr_name(off) (mmr_names[(off) / 4] ? : "<INV>") |
| 67 | |
| 68 | static void |
| 69 | bfin_eppi_gui_setup (struct bfin_eppi *eppi) |
| 70 | { |
| 71 | /* If we are in RX mode, nothing to do. */ |
| 72 | if (!(eppi->control & PORT_DIR)) |
| 73 | return; |
| 74 | |
| 75 | eppi->gui_state = bfin_gui_setup (eppi->gui_state, |
| 76 | eppi->control & PORT_EN, |
| 77 | eppi->hcount, |
| 78 | eppi->vcount, |
| 79 | eppi->color); |
| 80 | } |
| 81 | |
| 82 | static unsigned |
| 83 | bfin_eppi_io_write_buffer (struct hw *me, const void *source, |
| 84 | int space, address_word addr, unsigned nr_bytes) |
| 85 | { |
| 86 | struct bfin_eppi *eppi = hw_data (me); |
| 87 | bu32 mmr_off; |
| 88 | bu32 value; |
| 89 | bu16 *value16p; |
| 90 | bu32 *value32p; |
| 91 | void *valuep; |
| 92 | |
| 93 | if (nr_bytes == 4) |
| 94 | value = dv_load_4 (source); |
| 95 | else |
| 96 | value = dv_load_2 (source); |
| 97 | |
| 98 | mmr_off = addr - eppi->base; |
| 99 | valuep = (void *)((unsigned long)eppi + mmr_base() + mmr_off); |
| 100 | value16p = valuep; |
| 101 | value32p = valuep; |
| 102 | |
| 103 | HW_TRACE_WRITE (); |
| 104 | |
| 105 | switch (mmr_off) |
| 106 | { |
| 107 | case mmr_offset(status): |
| 108 | dv_bfin_mmr_require_16 (me, addr, nr_bytes, true); |
| 109 | dv_w1c_2 (value16p, value, 0x1ff); |
| 110 | break; |
| 111 | case mmr_offset(hcount): |
| 112 | case mmr_offset(hdelay): |
| 113 | case mmr_offset(vcount): |
| 114 | case mmr_offset(vdelay): |
| 115 | case mmr_offset(frame): |
| 116 | case mmr_offset(line): |
| 117 | case mmr_offset(clkdiv): |
| 118 | dv_bfin_mmr_require_16 (me, addr, nr_bytes, true); |
| 119 | *value16p = value; |
| 120 | break; |
| 121 | case mmr_offset(control): |
| 122 | *value32p = value; |
| 123 | bfin_eppi_gui_setup (eppi); |
| 124 | break; |
| 125 | case mmr_offset(fs1w_hbl): |
| 126 | case mmr_offset(fs1p_avpl): |
| 127 | case mmr_offset(fsw2_lvb): |
| 128 | case mmr_offset(fs2p_lavf): |
| 129 | case mmr_offset(clip): |
| 130 | case mmr_offset(err): |
| 131 | dv_bfin_mmr_require_32 (me, addr, nr_bytes, true); |
| 132 | *value32p = value; |
| 133 | break; |
| 134 | default: |
| 135 | dv_bfin_mmr_invalid (me, addr, nr_bytes, true); |
| 136 | break; |
| 137 | } |
| 138 | |
| 139 | return nr_bytes; |
| 140 | } |
| 141 | |
| 142 | static unsigned |
| 143 | bfin_eppi_io_read_buffer (struct hw *me, void *dest, |
| 144 | int space, address_word addr, unsigned nr_bytes) |
| 145 | { |
| 146 | struct bfin_eppi *eppi = hw_data (me); |
| 147 | bu32 mmr_off; |
| 148 | bu16 *value16p; |
| 149 | bu32 *value32p; |
| 150 | void *valuep; |
| 151 | |
| 152 | mmr_off = addr - eppi->base; |
| 153 | valuep = (void *)((unsigned long)eppi + mmr_base() + mmr_off); |
| 154 | value16p = valuep; |
| 155 | value32p = valuep; |
| 156 | |
| 157 | HW_TRACE_READ (); |
| 158 | |
| 159 | switch (mmr_off) |
| 160 | { |
| 161 | case mmr_offset(status): |
| 162 | case mmr_offset(hcount): |
| 163 | case mmr_offset(hdelay): |
| 164 | case mmr_offset(vcount): |
| 165 | case mmr_offset(vdelay): |
| 166 | case mmr_offset(frame): |
| 167 | case mmr_offset(line): |
| 168 | case mmr_offset(clkdiv): |
| 169 | dv_bfin_mmr_require_16 (me, addr, nr_bytes, false); |
| 170 | dv_store_2 (dest, *value16p); |
| 171 | break; |
| 172 | case mmr_offset(control): |
| 173 | case mmr_offset(fs1w_hbl): |
| 174 | case mmr_offset(fs1p_avpl): |
| 175 | case mmr_offset(fsw2_lvb): |
| 176 | case mmr_offset(fs2p_lavf): |
| 177 | case mmr_offset(clip): |
| 178 | case mmr_offset(err): |
| 179 | dv_bfin_mmr_require_32 (me, addr, nr_bytes, false); |
| 180 | dv_store_4 (dest, *value32p); |
| 181 | break; |
| 182 | default: |
| 183 | dv_bfin_mmr_invalid (me, addr, nr_bytes, false); |
| 184 | break; |
| 185 | } |
| 186 | |
| 187 | return nr_bytes; |
| 188 | } |
| 189 | |
| 190 | static unsigned |
| 191 | bfin_eppi_dma_read_buffer (struct hw *me, void *dest, int space, |
| 192 | unsigned_word addr, unsigned nr_bytes) |
| 193 | { |
| 194 | HW_TRACE_DMA_READ (); |
| 195 | return 0; |
| 196 | } |
| 197 | |
| 198 | static unsigned |
| 199 | bfin_eppi_dma_write_buffer (struct hw *me, const void *source, |
| 200 | int space, unsigned_word addr, |
| 201 | unsigned nr_bytes, |
| 202 | int violate_read_only_section) |
| 203 | { |
| 204 | struct bfin_eppi *eppi = hw_data (me); |
| 205 | |
| 206 | HW_TRACE_DMA_WRITE (); |
| 207 | |
| 208 | return bfin_gui_update (eppi->gui_state, source, nr_bytes); |
| 209 | } |
| 210 | |
| 211 | static const struct hw_port_descriptor bfin_eppi_ports[] = |
| 212 | { |
| 213 | { "stat", 0, 0, output_port, }, |
| 214 | { NULL, 0, 0, 0, }, |
| 215 | }; |
| 216 | |
| 217 | static void |
| 218 | attach_bfin_eppi_regs (struct hw *me, struct bfin_eppi *eppi) |
| 219 | { |
| 220 | address_word attach_address; |
| 221 | int attach_space; |
| 222 | unsigned attach_size; |
| 223 | reg_property_spec reg; |
| 224 | |
| 225 | if (hw_find_property (me, "reg") == NULL) |
| 226 | hw_abort (me, "Missing \"reg\" property"); |
| 227 | |
| 228 | if (!hw_find_reg_array_property (me, "reg", 0, ®)) |
| 229 | hw_abort (me, "\"reg\" property must contain three addr/size entries"); |
| 230 | |
| 231 | hw_unit_address_to_attach_address (hw_parent (me), |
| 232 | ®.address, |
| 233 | &attach_space, &attach_address, me); |
| 234 | hw_unit_size_to_attach_size (hw_parent (me), ®.size, &attach_size, me); |
| 235 | |
| 236 | if (attach_size != BFIN_MMR_EPPI_SIZE) |
| 237 | hw_abort (me, "\"reg\" size must be %#x", BFIN_MMR_EPPI_SIZE); |
| 238 | |
| 239 | hw_attach_address (hw_parent (me), |
| 240 | 0, attach_space, attach_address, attach_size, me); |
| 241 | |
| 242 | eppi->base = attach_address; |
| 243 | } |
| 244 | |
| 245 | static void |
| 246 | bfin_eppi_finish (struct hw *me) |
| 247 | { |
| 248 | struct bfin_eppi *eppi; |
| 249 | const char *color; |
| 250 | |
| 251 | eppi = HW_ZALLOC (me, struct bfin_eppi); |
| 252 | |
| 253 | set_hw_data (me, eppi); |
| 254 | set_hw_io_read_buffer (me, bfin_eppi_io_read_buffer); |
| 255 | set_hw_io_write_buffer (me, bfin_eppi_io_write_buffer); |
| 256 | set_hw_dma_read_buffer (me, bfin_eppi_dma_read_buffer); |
| 257 | set_hw_dma_write_buffer (me, bfin_eppi_dma_write_buffer); |
| 258 | set_hw_ports (me, bfin_eppi_ports); |
| 259 | |
| 260 | attach_bfin_eppi_regs (me, eppi); |
| 261 | |
| 262 | /* Initialize the EPPI. */ |
| 263 | if (hw_find_property (me, "color")) |
| 264 | color = hw_find_string_property (me, "color"); |
| 265 | else |
| 266 | color = NULL; |
| 267 | eppi->color = bfin_gui_color (color); |
| 268 | } |
| 269 | |
| 270 | const struct hw_descriptor dv_bfin_eppi_descriptor[] = |
| 271 | { |
| 272 | {"bfin_eppi", bfin_eppi_finish,}, |
| 273 | {NULL, NULL}, |
| 274 | }; |