| To: | ashley jones <ashley_jones_2000@yahoo.com> |
|---|---|
| Subject: | Re[4]: Socket buffer allocation outside DMA-able memory |
| From: | art <art@sigrand.ru> |
| Date: | Wed, 7 Jun 2006 14:37:30 +0700 |
| Cc: | linux-mips@linux-mips.org |
| In-reply-to: | <20060607051756.66058.qmail@web38409.mail.mud.yahoo.com> |
| Organization: | Sigrand LLC |
| Original-recipient: | rfc822;linux-mips@linux-mips.org |
| References: | <20060607051756.66058.qmail@web38409.mail.mud.yahoo.com> |
| Reply-to: | art <art@sigrand.ru> |
| Sender: | linux-mips-bounce@linux-mips.org |
Hello ashley, Wednesday, June 07, 2006, 12:17:56 PM, you wrote: aj>> I guess your 25 bit dma address field will be word alligned, so ur dma engine will be able to index up to 64 MB( 25+2 = 27 bits). aj> Address not aligned - if I don't do anything driver work incorrect! aj> *** what do you mean by Address not aligned ?? aj> *** What address you r passing to dma ? u should pass (skb->data >> 2) (if word alligned address is required for dma engine.) In adm5120 switch driver to dma passed skb->data -- Best regards, art mailto:art@sigrand.ru |
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