On Monday 02 February 2009 11:23:33 am Alexej Sokolov wrote:
> Hi,
> thanx for your answer. I checked the source code of the *dma() functions.
> If I understand it correctly, "loading of memory allocation" means the
> following:
>
> 1. At first memory allocation should be done: bufp = *alloc(size
Hi,
thanx for your answer. I checked the source code of the *dma() functions.
If I understand it correctly, "loading of memory allocation" means the
following:
1. At first memory allocation should be done: bufp = *alloc(sizeof )
2. then in ... _bus_dmamap_load_buffer() we get physical addres
On Mon, Feb 2, 2009 at 12:45 AM, Garrett Cooper wrote:
> On Sun, Feb 1, 2009 at 5:56 PM, Sergey Babkin wrote:
>>
>> If I remember correctly, loading means that the pages become mapped
>> and visible to the devices. Some buses can access only a limited
>> address space , like ISA has only a
On Sun, Feb 1, 2009 at 5:56 PM, Sergey Babkin wrote:
>
> If I remember correctly, loading means that the pages become mapped
> and visible to the devices. Some buses can access only a limited
> address space , like ISA has only a 24-bit address. When a map gets
> loaded, for any pages outs
If I remember correctly, loading means that the pages become mapped
and= visible to the devices. Some buses can access only a limited
address space= , like ISA has only a 24-bit address. When a map gets
loaded, for any pages= outside of this range the temporary in-ramge
pages are al
Hi,
at first the cut of text from man (9) bus_dma:
bus_dmamap_t
A machine-dependent opaque type describing an individual
mapping.
One map is used for each memory allocation that will be loaded.
Maps can be reused once they have been unloaded...
Question: What
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