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SubjectRe: [PATCH v4 03/17] remoteproc: add release ops in rproc_mem_entry struct
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On 10/23/18 11:53 AM, Suman Anna wrote:
> On 7/27/18 8:14 AM, Loic Pallardy wrote:
>> Memory entry could be allocated in different ways (ioremap,
>> dma_alloc_coherent, internal RAM allocator...).
>> This patch introduces a release ops in rproc_mem_entry structure
>> to associate dedicated release mechanism to each memory entry descriptor
>> in order to keep remoteproc core generic.
>>
>> Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
>> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
>
> Acked-by: Suman Anna <s-anna@ti.com>
>
>> ---
>> drivers/remoteproc/remoteproc_core.c | 23 +++++++++++++++++++++--
>> include/linux/remoteproc.h | 5 ++++-
>> 2 files changed, 25 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
>> index 8e5fe1e..24fe11f 100644
>> --- a/drivers/remoteproc/remoteproc_core.c
>> +++ b/drivers/remoteproc/remoteproc_core.c
>> @@ -600,6 +600,24 @@ static int rproc_handle_devmem(struct rproc *rproc, struct fw_rsc_devmem *rsc,
>> }
>>
>> /**
>> + * rproc_release_carveout() - release acquired carveout
>> + * @rproc: rproc handle
>> + * @mem: the memory entry to release
>> + *
>> + * This function releases specified memory entry @mem allocated via
>> + * dma_alloc_coherent() function by @rproc.
>> + */
>> +static int rproc_release_carveout(struct rproc *rproc,
>> + struct rproc_mem_entry *mem)
>> +{
>> + struct device *dev = &rproc->dev;
>> +
>> + /* clean up carveout allocations */
>> + dma_free_coherent(dev->parent, mem->len, mem->va, mem->dma);
>> + return 0;
>> +}
>> +
>> +/**
>> * rproc_handle_carveout() - handle phys contig memory allocation requests
>> * @rproc: rproc handle
>> * @rsc: the resource entry
>> @@ -733,6 +751,7 @@ static int rproc_handle_carveout(struct rproc *rproc,
>> carveout->len = rsc->len;
>> carveout->dma = dma;
>> carveout->da = rsc->da;
>> + carveout->release = rproc_release_carveout;
>>
>> list_add_tail(&carveout->node, &rproc->carveouts);
>>
>> @@ -920,8 +939,8 @@ static void rproc_resource_cleanup(struct rproc *rproc)
>>
>> /* clean up carveout allocations */
>> list_for_each_entry_safe(entry, tmp, &rproc->carveouts, node) {
>> - dma_free_coherent(dev->parent, entry->len, entry->va,
>> - entry->dma);
>> + if (entry->release)
>> + entry->release(rproc, entry);
>> list_del(&entry->node);
>> kfree(entry);
>> }
>> diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
>> index e3c5d85..bef2e83 100644
>> --- a/include/linux/remoteproc.h
>> +++ b/include/linux/remoteproc.h
>> @@ -305,12 +305,15 @@ struct fw_rsc_vdev {
>> struct fw_rsc_vdev_vring vring[0];
>> } __packed;
>>
>> +struct rproc;
>> +
>> /**
>> * struct rproc_mem_entry - memory entry descriptor
>> * @va: virtual address
>> * @dma: dma address
>> * @len: length, in bytes
>> * @da: device address
>> + * @release: release associated memory

Missed this earlier, move this line after the @node.

regards
Suman

>> * @priv: associated data
>> * @node: list node
>> */
>> @@ -321,9 +324,9 @@ struct rproc_mem_entry {
>> u32 da;
>> void *priv;
>> struct list_head node;
>> + int (*release)(struct rproc *rproc, struct rproc_mem_entry *mem);
>> };
>>
>> -struct rproc;
>> struct firmware;
>>
>> /**
>>
>

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