From mboxrd@z Thu Jan 1 00:00:00 1970 From: Grant Grundler Date: Fri, 16 May 2003 01:51:12 +0000 Subject: [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent Interfaces. Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org On Thu, May 15, 2003 at 06:32:31PM -0500, Colin Ngam wrote: > I do not understand what you are saying .. how would a consistent_dma_mask > attribute in the device struct helps pci_alloc_consistent() to return a dma > hanlde that can have the Upper 32 Bits Non 0's... Colin, davem has offered a counter proposal that makes way more sense that adding parameters to the dma_*() API. It won't change existing code or existing behaviors. And yes, Documentation/DMA_mapping.txt (API documentation) has to change to reflect that. Device Drivers SGI cares about will have to be modified to call pci_set_consistent_dma_mask() before calling pci_alloc_consistent(). hth, grant