| 1 |
2 |
kdv |
/*
|
| 2 |
|
|
* mem_codes.v
|
| 3 |
|
|
*
|
| 4 |
|
|
* Copyright (c) 2007 Koen De Vleeschauwer.
|
| 5 |
|
|
*
|
| 6 |
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
| 7 |
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
| 8 |
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
| 9 |
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
| 10 |
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
| 11 |
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
| 12 |
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
| 13 |
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
| 14 |
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
| 15 |
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
| 16 |
|
|
* SUCH DAMAGE.
|
| 17 |
|
|
*/
|
| 18 |
|
|
|
| 19 |
|
|
/*
|
| 20 |
|
|
* Memory controller commands.
|
| 21 |
|
|
*/
|
| 22 |
|
|
parameter [1:0]
|
| 23 |
|
|
CMD_NOOP = 2'b00, // no operation
|
| 24 |
|
|
CMD_REFRESH = 2'b01, // refresh memory
|
| 25 |
|
|
CMD_READ = 2'b10, // read 64-bit word
|
| 26 |
|
|
CMD_WRITE = 2'b11; // write 64-bit word
|
| 27 |
|
|
|
| 28 |
|
|
/*
|
| 29 |
|
|
* When submitting a memory request to the memory controller, a 'tag' is added, indicating the memory request source.
|
| 30 |
|
|
* This allows us to route the data read back to the port which originated the request.
|
| 31 |
|
|
*
|
| 32 |
|
|
* Tags used:
|
| 33 |
|
|
* TAG_CTRL Request from the memory controller. Used when initializing or refreshing DRAM.
|
| 34 |
|
|
* TAG_FWD Request from motion compensation. Read request for forward reference frame.
|
| 35 |
|
|
* TAG_BWD Request from motion compensation. Read request for backward reference frame.
|
| 36 |
|
|
* TAG_RECON Request from motion compensation. Write request for reconstructed frame.
|
| 37 |
|
|
* TAG_DISP Request from chroma resampling. Read request for reconstructed frame.
|
| 38 |
|
|
* TAG_OSD Request from register file. Write request for on-screen display.
|
| 39 |
|
|
*/
|
| 40 |
|
|
|
| 41 |
|
|
parameter [2:0]
|
| 42 |
|
|
TAG_CTRL = 3'd0,
|
| 43 |
|
|
TAG_FWD = 3'd1,
|
| 44 |
|
|
TAG_BWD = 3'd2,
|
| 45 |
|
|
TAG_RECON = 3'd3,
|
| 46 |
|
|
TAG_DISP = 3'd4,
|
| 47 |
|
|
TAG_OSD = 3'd5,
|
| 48 |
|
|
TAG_VBUF = 3'd6;
|
| 49 |
|
|
|
| 50 |
|
|
/*
|
| 51 |
|
|
* Frame store layout.
|
| 52 |
|
|
*
|
| 53 |
|
|
* Writing to and reading from the framestore uses 22-bit frame store addresses.
|
| 54 |
|
|
* Each address uniquely identifies an 8-pixel row of luminance or chrominance values in a block.
|
| 55 |
|
|
*
|
| 56 |
|
|
* chroma_format: (CHROMA420, CHROMA422, or CHROMA444)
|
| 57 |
|
|
* image width is mb_width macroblocks, height is mb_height macroblocks.
|
| 58 |
|
|
*
|
| 59 |
|
|
* 4:2:0 frame: (CHROMA420)
|
| 60 |
|
|
* mb_width
|
| 61 |
|
|
* +---------------+
|
| 62 |
|
|
* | |
|
| 63 |
|
|
* | Y | mb_height
|
| 64 |
|
|
* | |
|
| 65 |
|
|
* | mb_width/2 |
|
| 66 |
|
|
* +-------+-------+
|
| 67 |
|
|
* | Cb |
|
| 68 |
|
|
* | | mb_height/2
|
| 69 |
|
|
* +-------+
|
| 70 |
|
|
* | Cr |
|
| 71 |
|
|
* | | mb_height/2
|
| 72 |
|
|
* +-------+
|
| 73 |
|
|
*
|
| 74 |
|
|
* Macroblocks in memory.
|
| 75 |
|
|
* Each number represents a block row.
|
| 76 |
|
|
* A block row is a 64-bit word, consisting of 8 8-bit luminance or chrominance values of 8 consecutive pixels.
|
| 77 |
|
|
*
|
| 78 |
|
|
* +MB 0 ------------+MB 1 ------------+MB 2 -----------
|
| 79 |
|
|
* | 0 1 | 0 1 | 0 1
|
| 80 |
|
|
* | 2 3 | 2 3 | 2 3
|
| 81 |
|
|
* | 4 5 | 4 5 | 4 5
|
| 82 |
|
|
* | 6 7 | 6 7 | 6 7
|
| 83 |
|
|
* | 8 9 | 8 9 | 8 9
|
| 84 |
|
|
* | 10 11 | 10 11 | 10 11
|
| 85 |
|
|
* | 12 13 | 12 13 | 12 13
|
| 86 |
|
|
* | 14 15 | 14 15 | 14 15
|
| 87 |
|
|
* | 16 17 | 16 17 | 16 17
|
| 88 |
|
|
* | 18 19 | 18 19 | 18 19
|
| 89 |
|
|
* | 20 21 | 20 21 | 20 21
|
| 90 |
|
|
* | 22 23 | 22 23 | 22 23
|
| 91 |
|
|
* | 24 25 | 24 25 | 24 25
|
| 92 |
|
|
* | 26 27 | 26 27 | 26 27
|
| 93 |
|
|
* | 28 29 | 28 29 | 28 29
|
| 94 |
|
|
* | 30 31 | 30 31 | 30 31
|
| 95 |
|
|
* +MB mb_width -----+MB mb_width+1 ---+MB mb_width+2 --
|
| 96 |
|
|
* | 0 1 | 0 1 | 0 1
|
| 97 |
|
|
* | 2 3 | 2 3 | 2 3
|
| 98 |
|
|
* | 4 5 | 4 5 | 4 5
|
| 99 |
|
|
* | 6 7 | 6 7 | 6 7
|
| 100 |
|
|
* | 8 9 | 8 9 | 8 9
|
| 101 |
|
|
* | 10 11 | 10 11 | 10 11
|
| 102 |
|
|
* | 12 13 | 12 13 | 12 13
|
| 103 |
|
|
* | 14 15 | 14 15 | 14 15
|
| 104 |
|
|
* | 16 17 | 16 17 | 16 17
|
| 105 |
|
|
* | 18 19 | 18 19 | 18 19
|
| 106 |
|
|
* | 20 21 | 20 21 | 20 21
|
| 107 |
|
|
* | 22 23 | 22 23 | 22 23
|
| 108 |
|
|
* | 24 25 | 24 25 | 24 25
|
| 109 |
|
|
* | 26 27 | 26 27 | 26 27
|
| 110 |
|
|
* | 28 29 | 28 29 | 28 29
|
| 111 |
|
|
* | 30 31 | 30 31 | 30 31
|
| 112 |
|
|
* +MB 2*mb_width ---+MB 2*mb_width+1 -+MB 2*mb_width+2 -
|
| 113 |
|
|
* | 0 1 | 0 1 | 0 1
|
| 114 |
|
|
* | 2 3 | 2 3 | 2 3
|
| 115 |
|
|
* | 4 5 | 4 5 | 4 5
|
| 116 |
|
|
* | 6 7 | 6 7 | 6 7
|
| 117 |
|
|
* | 8 9 | 8 9 | 8 9
|
| 118 |
|
|
* | 10 11 | 10 11 | 10 11
|
| 119 |
|
|
* | 12 13 | 12 13 | 12 13
|
| 120 |
|
|
* | 14 15 | 14 15 | 14 15
|
| 121 |
|
|
* | 16 17 | 16 17 | 16 17
|
| 122 |
|
|
* | 18 19 | 18 19 | 18 19
|
| 123 |
|
|
* | 20 21 | 20 21 | 20 21
|
| 124 |
|
|
* | 22 23 | 22 23 | 22 23
|
| 125 |
|
|
* | 24 25 | 24 25 | 24 25
|
| 126 |
|
|
* | 26 27 | 26 27 | 26 27
|
| 127 |
|
|
* | 28 29 | 28 29 | 28 29
|
| 128 |
|
|
* | 30 31 | 30 31 | 30 31
|
| 129 |
|
|
*
|
| 130 |
|
|
* Blocks within a macroblock.
|
| 131 |
|
|
* Each digit represents an 8-bit luminance or chrominance value.
|
| 132 |
|
|
*
|
| 133 |
|
|
* +block0--+block1--+
|
| 134 |
|
|
* |01234567|01234567|
|
| 135 |
|
|
* |01234567|01234567|
|
| 136 |
|
|
* |01234567|01234567|
|
| 137 |
|
|
* |01234567|01234567|
|
| 138 |
|
|
* |01234567|01234567|
|
| 139 |
|
|
* |01234567|01234567|
|
| 140 |
|
|
* |01234567|01234567|
|
| 141 |
|
|
* |01234567|01234567|
|
| 142 |
|
|
* +block2--+block3--+
|
| 143 |
|
|
* |01234567|01234567|
|
| 144 |
|
|
* |01234567|01234567|
|
| 145 |
|
|
* |01234567|01234567|
|
| 146 |
|
|
* |01234567|01234567|
|
| 147 |
|
|
* |01234567|01234567|
|
| 148 |
|
|
* |01234567|01234567|
|
| 149 |
|
|
* |01234567|01234567|
|
| 150 |
|
|
* |01234567|01234567|
|
| 151 |
|
|
* +--------+--------+
|
| 152 |
|
|
*
|
| 153 |
|
|
* Rows within a block.
|
| 154 |
|
|
*
|
| 155 |
|
|
* +block0--+
|
| 156 |
|
|
* |01234567| row 0
|
| 157 |
|
|
* |01234567| row 1
|
| 158 |
|
|
* |01234567| row 2
|
| 159 |
|
|
* |01234567| row 3
|
| 160 |
|
|
* |01234567| row 4
|
| 161 |
|
|
* |01234567| row 5
|
| 162 |
|
|
* |01234567| row 6
|
| 163 |
|
|
* |01234567| row 7
|
| 164 |
|
|
* +--------+
|
| 165 |
|
|
*
|
| 166 |
|
|
* To calculate a block row's address in memory, use memory_address().
|
| 167 |
|
|
*
|
| 168 |
|
|
*/
|
| 169 |
|
|
|
| 170 |
|
|
parameter [1:0]
|
| 171 |
|
|
COMP_Y = 2'b00, // Y operation
|
| 172 |
|
|
COMP_CR = 2'b01, // Cr
|
| 173 |
|
|
COMP_CB = 2'b10; // Cb
|
| 174 |
|
|
|
| 175 |
|
|
// Uncomment next line for HDTV memory mapping
|
| 176 |
|
|
`define MP_AT_HL 1
|
| 177 |
|
|
`ifdef MP_AT_HL
|
| 178 |
|
|
/*
|
| 179 |
|
|
* Memory mapping.
|
| 180 |
|
|
*
|
| 181 |
|
|
* This memory mapping is sufficient for up to MP@HL, 1920x1088 pixels, 4:2:0. Requires 15 mbyte ram.
|
| 182 |
|
|
* Consists of four frames, on-screen display and video buffer.
|
| 183 |
|
|
* Note that as the vbuf_wr_addr and vbuf_rd_addr counters are 18 bit, VBUF needs to end in 18 zeroes binary. eg. VBUF = 22'h1c0000 is ok, 22'h1d0000 isn't.
|
| 184 |
|
|
*
|
| 185 |
|
|
*/
|
| 186 |
|
|
|
| 187 |
|
|
parameter [21:0]
|
| 188 |
|
|
WIDTH_Y = 22'd18, // Luminance size = 2 ** WIDTH_Y. 2 mbyte of 8-byte words.
|
| 189 |
|
|
WIDTH_C = 22'd16, // Chrominance size = 2 ** WIDTH_C. 512 kbyte of 8-byte words.
|
| 190 |
|
|
VBUF = 22'h1c0000, // Table E-23: MP@HL: vbv buffer size is 9781248 bits.
|
| 191 |
|
|
VBUF_END = 22'h1efffe,
|
| 192 |
|
|
ADDR_ERR = 22'h1effff; // Error address; used to signal overflow. (eg. macroblock address too large, or motion vector outside frame). Points to somewhere harmless.
|
| 193 |
|
|
|
| 194 |
|
|
`else
|
| 195 |
|
|
|
| 196 |
|
|
/*
|
| 197 |
|
|
* Memory mapping.
|
| 198 |
|
|
*
|
| 199 |
|
|
* This memory mapping is sufficient for up to MP@ML, up to 768x576 pixels SDTV, 4:2:0. Requires 4 mbyte ram.
|
| 200 |
|
|
* Consists of four frames, on-screen display and video buffer.
|
| 201 |
|
|
*/
|
| 202 |
|
|
|
| 203 |
|
|
parameter [21:0]
|
| 204 |
|
|
WIDTH_Y = 22'd16, // Luminance size = 2 ** WIDTH_Y. 512 kbyte of 8-byte words
|
| 205 |
|
|
WIDTH_C = 22'd14, // Chrominance size = 2 ** WIDTH_C. 128 kbyte of 8-byte words
|
| 206 |
|
|
VBUF = 22'h070000, // Table E-23: MP@ML: vbv buffer size is 1835008 bits.
|
| 207 |
|
|
VBUF_END = 22'h077ffe,
|
| 208 |
|
|
ADDR_ERR = 22'h077fff; // Error address; used to signal overflow. (eg. macroblock address too large, or motion vector outside frame). Points to somewhere harmless.
|
| 209 |
|
|
|
| 210 |
|
|
`endif
|
| 211 |
|
|
|
| 212 |
|
|
parameter [21:0]
|
| 213 |
|
|
FRAME_0_Y = 22'h000000,
|
| 214 |
|
|
FRAME_0_CR = (22'h1 << WIDTH_Y),
|
| 215 |
|
|
FRAME_0_CB = (22'h1 << WIDTH_Y) + (22'h1 << WIDTH_C),
|
| 216 |
|
|
FRAME_1_Y = (22'h1 << WIDTH_Y) + (22'h2 << WIDTH_C),
|
| 217 |
|
|
FRAME_1_CR = (22'h1 << WIDTH_Y) + (22'h2 << WIDTH_C) + (22'h1 << WIDTH_Y),
|
| 218 |
|
|
FRAME_1_CB = (22'h1 << WIDTH_Y) + (22'h2 << WIDTH_C) + (22'h1 << WIDTH_Y) + (22'h1 << WIDTH_C),
|
| 219 |
|
|
FRAME_2_Y = (22'h2 << WIDTH_Y) + (22'h4 << WIDTH_C),
|
| 220 |
|
|
FRAME_2_CR = (22'h2 << WIDTH_Y) + (22'h4 << WIDTH_C) + (22'h1 << WIDTH_Y),
|
| 221 |
|
|
FRAME_2_CB = (22'h2 << WIDTH_Y) + (22'h4 << WIDTH_C) + (22'h1 << WIDTH_Y) + (22'h1 << WIDTH_C),
|
| 222 |
|
|
FRAME_3_Y = (22'h3 << WIDTH_Y) + (22'h6 << WIDTH_C),
|
| 223 |
|
|
FRAME_3_CR = (22'h3 << WIDTH_Y) + (22'h6 << WIDTH_C) + (22'h1 << WIDTH_Y),
|
| 224 |
|
|
FRAME_3_CB = (22'h3 << WIDTH_Y) + (22'h6 << WIDTH_C) + (22'h1 << WIDTH_Y) + (22'h1 << WIDTH_C),
|
| 225 |
|
|
OSD = (22'h4 << WIDTH_Y) + (22'h8 << WIDTH_C);
|
| 226 |
|
|
|
| 227 |
|
|
parameter [2:0]
|
| 228 |
|
|
OSD_FRAME = 3'd4;
|
| 229 |
|
|
|
| 230 |
|
|
parameter [21:0]
|
| 231 |
|
|
END_OF_MEM = ADDR_ERR; // End of memory.
|
| 232 |
|
|
|
| 233 |
|
|
/* not truncated */
|
