Mercurial > archived > louis > epitech > mq > rathaxes

annotate e1000_initialize_transmission.patch @ 82:71f76c0f235f

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Wip on the transmission
author Louis Opter <louis@lse.epitech.net>
date Mon, 21 May 2012 04:09:23 +0200
parents 78f2f1918398
children 27f0e70df342
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78f2f1918398 Push the rx init, start a patch for the tx init
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1 # HG changeset patch
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2 # Parent 1328cb41b1bb4d39588c1934c841b3e4362f7413
81
78f2f1918398 Push the rx init, start a patch for the tx init
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3 rathaxes: initialize transmission on the e1000 sample:
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4
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5 - This is documented in details in the sections 14.5 and 3.3 of the
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6 Intel Gigabit Controller Software Developer manual.
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7
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8 diff --git a/rathaxes/samples/e1000/e1000.blt b/rathaxes/samples/e1000/e1000.blt
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9 --- a/rathaxes/samples/e1000/e1000.blt
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10 +++ b/rathaxes/samples/e1000/e1000.blt
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11 @@ -34,6 +34,24 @@
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12 }
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13 }
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14
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15 + template type e1000:TxDescriptor()
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16 + {
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17 + chunk LKM:includes()
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18 + {
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19 + typedef int ${e1000:TxDescriptor};
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20 +
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21 + static const ${e1000:TxDescriptor} force_rtx_e1000_tx_descriptor_decl;
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22 + }
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23 +
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24 + chunk ::decl()
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25 + {
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26 + typedef struct rtx_e1000_tx_descriptor
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27 + {
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28 +
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29 + }
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30 + }
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31 + }
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32 +
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33 /*
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34 * Ring of e1000::RxDescriptors and their corresponding skbuffs.
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35 *
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36 @@ -103,6 +121,7 @@
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37
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38 /* we can't use the Rathaxes type here (#8) */
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39 struct rtx_e1000_rx_ring rx_ring;
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40 + struct rtx_e1000_tx_ring tx_ring;
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41 } *rtx_e1000_ctx_p;
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42 }
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43
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44 @@ -736,6 +755,20 @@
81
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45 }
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46
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47 /*
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48 + * Transmission initialization (section 14.5):
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49 + *
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50 + * 1. Allocate the transmit descriptors ring and map it to make it
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51 + * accessible by the device;
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52 + * 2. Write the start address of the ring in TDBAL/TDBAH and set
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53 + * TDLEN to the size of the ring;
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54 + * 3. Set the TDH/TDT indexes to the beginning and end of the ring;
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55 + * 4. Set TCTL.PSP to pad short packets and TCTL.EN to enable the
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56 + * transmitter.
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57 + */
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58 +
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59 + /* 1. Allocate the tx ring */
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60 +
81
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61 + /*
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62 * XXX: We can't return here since we are not in a function but in
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63 * a chunk of code (injected in a function).
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64 */