Naum sei se mudei de assunto, mas achei isso no kerneltrap sobre o kernel 2.6, quem naum leu, ai vai um pedaco a respeito dos drivers IDE e SCSI:
Dedicated storage busses, such as IDE/ATA and SCSI, have also received a more major update during the 2.6 cycle. The most major changes centered around the IDE subsystem which has been rewritten (and rewritten again) during the development of the new kernel, resolving many scalability problems and other limitations. For example, IDE CD/RW drives can now be written to directly through the real IDE disk driver, a much cleaner implementation than before. (Previously, it was required to also use a special SCSI-emulating driver which was confusing and often difficult.) The IDE layer is also now capable of querying a machine's BIOS when it comes across a controller that it does not recognize so that it can use reasonable values for timings and other required data. On the SCSI side, there have also been many small improvements scattered around the system both for wider support and scalability. One specific improvement for older systems is that Linux now supports SCSI-2 multipath devices that have more than 2 LUNs on a device. (SCSI-2 is the previous version of the SCSI device standard, circa 1994.) Another important change is that Linux can now fall back to test media changing like Microsoft Windows does, to be more compatible with devices that do not completely follow the specification. As these technologies have stabilized over time, so too has Linux's support for them. >On Tue, 22 Jul 2003 16:04:13 -0700 >Rafael Diniz <[EMAIL PROTECTED]> wrote: > >[corta] > >> Com relacao ao gravador, eh que quanto se usa a emulacao scsi, para >> ativar o gravador, ele fica mais lento pois, se naum me engano, perde >> o DMA. > >_Acho_ que o ide-scsi usa o DMA. > >> Mas tudo isso jah foi resolvido no kernel 2.6pre, jah que agora >> o driver IDE suporta gravar CD`s :-) > >Pelo que vi no site do Xcdroast, j� dava para gravar sem o ide-scsi com >kernels anteriores, mas a� sim que o DMA ficava desativado (posso ter >entendido errado o FAQ). > >E, completando, o �ltimo Xcdroast + cdrtools ainda n�o consegue detectar >o CD-RW sem o ide-scsi mesmo com o kernel 2.6.0-test1... Abracos, Rafael Diniz -- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ -+-+-+-+-+-+- Engenharia da Computa��o -- Unicamp http://www.gnu.org/philosophy/why-free.pt.html Usu�rio do sistema operacional GNU/Linux Chave PGP: http://www.dcc.unicamp.br/~ra017126/pubkey.asc "Acreditar num conhecimento que pode ser vendido e comprado � uma forma sutil (e cruel) de perpetuar a ignor�ncia." +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ -+-+-+-+-+-+- --------------------------------------------------------------------------- Esta lista � patrocinada pela Conectiva S.A. Visite http://www.conectiva.com.br Arquivo: http://bazar2.conectiva.com.br/mailman/listinfo/linux-br Regras de utiliza��o da lista: http://linux-br.conectiva.com.br FAQ: http://www.zago.eti.br/menu.html
