On 3/5/19 2:54 PM, John Stultz wrote:
> Add generic helper dmabuf ops for dma heaps, so we can reduce
> the amount of duplicative code for the exported dmabufs.
>
> This code is an evolution of the Android ION implementation, so
> thanks to its original authors and maintainters:
> Rebecca Schult
On 3/19/19 9:26 AM, Brian Starkey wrote:
> Hi John,
>
> On Tue, Mar 05, 2019 at 12:54:30PM -0800, John Stultz wrote:
>
> ...
>
>> +
>> +void dma_heap_buffer_destroy(struct dma_heap_buffer *heap_buffer)
>> +{
>> +struct heap_helper_buffer *buffer = to_helper_buffer(heap_buffer);
>> +
>> +
On Tue, Mar 19, 2019 at 7:26 AM Brian Starkey wrote:
>
> Hi John,
>
> On Tue, Mar 05, 2019 at 12:54:30PM -0800, John Stultz wrote:
>
> ...
>
> > +
> > +void dma_heap_buffer_destroy(struct dma_heap_buffer *heap_buffer)
> > +{
> > + struct heap_helper_buffer *buffer = to_helper_buffer(heap_buffe
On Fri, Mar 15, 2019 at 2:06 AM Christoph Hellwig wrote:
> > + if (buffer->kmap_cnt) {
> > + buffer->kmap_cnt++;
> > + return buffer->vaddr;
> > + }
> > + vaddr = dma_heap_map_kernel(buffer);
> > + if (WARN_ONCE(!vaddr,
> > + "heap->ops->ma
On 3/15/19 4:06 AM, Christoph Hellwig wrote:
>> +ret = remap_pfn_range(vma, addr, page_to_pfn(page), len,
>> + vma->vm_page_prot);
>
> So the same chunk could be mapped to userspace and vmap, and later on
> also DMA mapped. Who is going to take care of
Hi John,
On Tue, Mar 05, 2019 at 12:54:30PM -0800, John Stultz wrote:
...
> +
> +void dma_heap_buffer_destroy(struct dma_heap_buffer *heap_buffer)
> +{
> + struct heap_helper_buffer *buffer = to_helper_buffer(heap_buffer);
> +
> + if (buffer->kmap_cnt > 0) {
> + pr_warn_once(
On Wed, 13 Mar 2019, Andrew F. Davis wrote:
> On 3/13/19 3:18 PM, Liam Mark wrote:
> > On Tue, 5 Mar 2019, John Stultz wrote:
> >
> >> Add generic helper dmabuf ops for dma heaps, so we can reduce
> >> the amount of duplicative code for the exported dmabufs.
> >>
> >> This code is an evolution of
On Tue, 5 Mar 2019, John Stultz wrote:
> Add generic helper dmabuf ops for dma heaps, so we can reduce
> the amount of duplicative code for the exported dmabufs.
>
> This code is an evolution of the Android ION implementation, so
> thanks to its original authors and maintainters:
> Rebecca Schu
On 3/13/19 5:57 PM, Liam Mark wrote:
> On Wed, 13 Mar 2019, Andrew F. Davis wrote:
>
>> On 3/13/19 3:18 PM, Liam Mark wrote:
>>> On Tue, 5 Mar 2019, John Stultz wrote:
>>>
Add generic helper dmabuf ops for dma heaps, so we can reduce
the amount of duplicative code for the exported dmabuf
On 3/13/19 3:18 PM, Liam Mark wrote:
> On Tue, 5 Mar 2019, John Stultz wrote:
>
>> Add generic helper dmabuf ops for dma heaps, so we can reduce
>> the amount of duplicative code for the exported dmabufs.
>>
>> This code is an evolution of the Android ION implementation, so
>> thanks to its origin
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