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annotate TaskManager/Cell/spe/CellScheduler.cc @ 666:4615489c5faa

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simplify word_count
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Thu, 03 Dec 2009 02:11:31 +0900
parents 8cc609285bbe
children ab3cd3aeacff
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1 #include <stdio.h>
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2 #include "CellScheduler.h"
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3 #include "CellDmaManager.h"
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4 #include "error.h"
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5
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6 // ユーザプログラムで定義
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7 // なんだけど、それは微妙じゃね？
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8 extern void task_init(Scheduler *scheduler);
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9
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10 void
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11 CellScheduler::init_impl()
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12 {
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13 connector = new CellDmaManager;
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15 mainMemNum = 0;
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16
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17 task_init(this); // PPE側ではUser 側で既に呼んでいる...
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18 // SPE側はここで呼び出す必要がある
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19 // Fifo ではSPEは無いので呼び出されない
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20 }
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22 /**
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23 * メインメモリ領域を allocate する。
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24 * allocate した領域のアドレスは mainMem_get で取得するが、
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25 * mainMem_get を実行できるのは
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26 * Renew Task (タスク内で create した Task) から。
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27 * alloc してすぐ get しても、アドレス何も入ってないです。
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28 */
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29 void
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30 CellScheduler::mainMem_alloc(int id, int size)
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31 {
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32 mainMemList[id] = (memaddr)NULL;
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34 mainMemNum++;
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35 mail_write((memaddr)MY_SPE_COMMAND_MALLOC);
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36 mail_write((memaddr)id);
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37 mail_write((memaddr)size);
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38 }
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40 void
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41 CellScheduler::mainMem_wait()
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42 {
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43 unsigned long id;
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44 memaddr addr;
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45
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46 while (mainMemNum > 0) {
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47 id = (unsigned long)mail_read();
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48 addr = mail_read();
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49
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50 mainMemList[id] = (memaddr)addr;
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51 mainMemNum--;
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52 }
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53 }
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55 /*
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56 dma channel を返す
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57 本来、SPU用に閉じているはず。ユーザが明示的に使うことはない。
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58 良くわからないが、ある分だけcounterで廻せば良い。しかし、
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59 そのためには、全部で、get_tag()する必要があるはず。
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61 */
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63 #define TEX_LOAD1 0
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64 // #define TEX_LOAD2 1
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66 uint32
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67 CellScheduler::get_tag()
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68 {
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69 static int count = 0;
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70 return TEX_LOAD1+(count++ % 2);
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71 }
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75 /* end */