| Message ID | 1519921440-21356-4-git-send-email-loic.pallardy@st.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | remoteproc: add fixed memory region support | expand |
On Thu 01 Mar 08:23 PST 2018, 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> Regards, Bjorn > --- > 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 eb1b779..5f11536 100644 > --- a/drivers/remoteproc/remoteproc_core.c > +++ b/drivers/remoteproc/remoteproc_core.c > @@ -597,6 +597,24 @@ 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 > @@ -730,6 +748,7 @@ 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); > > @@ -863,8 +882,8 @@ 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 728d421..dedc138 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 > * @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; > > /** > -- > 1.9.1 >
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index eb1b779..5f11536 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -597,6 +597,24 @@ 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 @@ -730,6 +748,7 @@ 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); @@ -863,8 +882,8 @@ 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 728d421..dedc138 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 * @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; /**
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> --- drivers/remoteproc/remoteproc_core.c | 23 +++++++++++++++++++++-- include/linux/remoteproc.h | 5 ++++- 2 files changed, 25 insertions(+), 3 deletions(-) -- 1.9.1