Searched hist:48028 (Results 1 - 2 of 2) sorted by relevance
| /freebsd-9.3-release/sys/pci/ | ||
| H A D | if_rl.c | diff 48028 Sat Jun 19 18:17:38 MDT 1999 wpaul Fix up the RealTek 8139 driver to work on FreeBSD/alpha. This involves a few changes: - there was a bug in rl_list_tx_init(): it was calculating the registers to initialize incorrectly. Not a problem on the x86 where unaligned access are allowed, but a problem on the alpha. - set rl_btag accordingly depending on the machine type - rl_rxeof() needs to be sure to longword-align the packet data. This is a little tricky since we copy the data out of the receive buffer using m_devget(), however there's no way to tell m_devget() to fill in the mbufs starting at a particular offset. To get around this, we tell m_devget to copy bytes+2 bytes starting at offset offset-2. This results in the proper alignment, and we can trim off the two leading bytes afterwards with m_adj(). We also allocate some extra space before the start of the receive buffer so that we don't get into trouble in the case where offset == 0. - redefine vtophys() in if_rlreg.h for the alpha. Making this chipset work on the alpha is sort of the inverse of putting a jet engine on a rowboat (putting a propeller on a 747?) but when you can get these things for $5 a pop, it's hard to stop people from buying them. |
| H A D | if_rlreg.h | diff 48028 Sat Jun 19 18:17:38 MDT 1999 wpaul Fix up the RealTek 8139 driver to work on FreeBSD/alpha. This involves a few changes: - there was a bug in rl_list_tx_init(): it was calculating the registers to initialize incorrectly. Not a problem on the x86 where unaligned access are allowed, but a problem on the alpha. - set rl_btag accordingly depending on the machine type - rl_rxeof() needs to be sure to longword-align the packet data. This is a little tricky since we copy the data out of the receive buffer using m_devget(), however there's no way to tell m_devget() to fill in the mbufs starting at a particular offset. To get around this, we tell m_devget to copy bytes+2 bytes starting at offset offset-2. This results in the proper alignment, and we can trim off the two leading bytes afterwards with m_adj(). We also allocate some extra space before the start of the receive buffer so that we don't get into trouble in the case where offset == 0. - redefine vtophys() in if_rlreg.h for the alpha. Making this chipset work on the alpha is sort of the inverse of putting a jet engine on a rowboat (putting a propeller on a 747?) but when you can get these things for $5 a pop, it's hard to stop people from buying them. |
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