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Message-ID: <c9204e2d67ce40a0a218fd679e5370a0@SFHDAG7NODE2.st.com>
Date: Wed, 3 Jan 2018 13:15:28 +0000
From: Loic PALLARDY <loic.pallardy@...com>
To: Loic PALLARDY <loic.pallardy@...com>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Ohad Ben-Cohen <ohad@...ery.com>
CC: "linux-remoteproc@...r.kernel.org" <linux-remoteproc@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
"linux-soc@...r.kernel.org" <linux-soc@...r.kernel.org>,
Suman Anna <s-anna@...com>,
Avaneesh Kumar Dwivedi <akdwived@...eaurora.org>
Subject: RE: [PATCH v2 2/4] remoteproc: Rename "load_rsc_table" to "parse_fw"
> -----Original Message-----
> From: linux-remoteproc-owner@...r.kernel.org [mailto:linux-remoteproc-
> owner@...r.kernel.org] On Behalf Of Loic PALLARDY
> Sent: Wednesday, January 03, 2018 11:27 AM
> To: Bjorn Andersson <bjorn.andersson@...aro.org>; Ohad Ben-Cohen
> <ohad@...ery.com>
> Cc: linux-remoteproc@...r.kernel.org; linux-kernel@...r.kernel.org; linux-
> arm-msm@...r.kernel.org; linux-soc@...r.kernel.org; Suman Anna <s-
> anna@...com>; Avaneesh Kumar Dwivedi <akdwived@...eaurora.org>
> Subject: RE: [PATCH v2 2/4] remoteproc: Rename "load_rsc_table" to
> "parse_fw"
>
>
>
> > -----Original Message-----
> > From: linux-remoteproc-owner@...r.kernel.org [mailto:linux-
> remoteproc-
> > owner@...r.kernel.org] On Behalf Of Bjorn Andersson
> > Sent: Tuesday, December 26, 2017 9:39 PM
> > To: Ohad Ben-Cohen <ohad@...ery.com>; Bjorn Andersson
> > <bjorn.andersson@...aro.org>
> > Cc: linux-remoteproc@...r.kernel.org; linux-kernel@...r.kernel.org;
> linux-
> > arm-msm@...r.kernel.org; linux-soc@...r.kernel.org; Suman Anna <s-
> > anna@...com>; Avaneesh Kumar Dwivedi <akdwived@...eaurora.org>
> > Subject: [PATCH v2 2/4] remoteproc: Rename "load_rsc_table" to
> > "parse_fw"
> >
> > The resource table is just one possible source of information that can
> > be extracted from the firmware file. Generalize this interface to allow
> > drivers to override this with parsers of other types of information.
> >
> > Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> > ---
> >
> > Changes since v1:
> > - New patch
> >
> > drivers/remoteproc/remoteproc_core.c | 6 +++---
> > drivers/remoteproc/remoteproc_internal.h | 7 +++----
> > include/linux/remoteproc.h | 2 +-
> > 3 files changed, 7 insertions(+), 8 deletions(-)
> >
> > diff --git a/drivers/remoteproc/remoteproc_core.c
> > b/drivers/remoteproc/remoteproc_core.c
> > index 5af7547b9d8d..6a72daa94673 100644
> > --- a/drivers/remoteproc/remoteproc_core.c
> > +++ b/drivers/remoteproc/remoteproc_core.c
> > @@ -944,8 +944,8 @@ static int rproc_fw_boot(struct rproc *rproc, const
> > struct firmware *fw)
> >
> > rproc->bootaddr = rproc_get_boot_addr(rproc, fw);
> >
> > - /* load resource table */
> > - ret = rproc_load_rsc_table(rproc, fw);
> > + /* parse firmware resources */
> > + ret = rproc_parse_fw(rproc, fw);
> Hi Bjorn,
>
> I think it will be good to keep resource (aka rsc) in function name. only
> "parse_fw" is not enough explicit and we don't know why rproc should parse
> firmware.
>
> Regards,
> Loic
Forgot my previous remark, better understanding thanks to the rest of the series.
Anyway, will be nice to have a comment here as it is not only parsing the firmware, you collect some information like copy of the resource table, list of elf segment to dump...
I think it is important to be clear about resource table management as it is a key element of the remoteproc core, where it is loaded, where it is copied back in memory...
Regards,
Loic
>
> > if (ret)
> > goto disable_iommu;
> >
> > @@ -1555,7 +1555,7 @@ struct rproc *rproc_alloc(struct device *dev,
> const
> > char *name,
> > /* Default to ELF loader if no load function is specified */
> > if (!rproc->ops->load) {
> > rproc->ops->load = rproc_elf_load_segments;
> > - rproc->ops->load_rsc_table = rproc_elf_load_rsc_table;
> > + rproc->ops->parse_fw = rproc_elf_load_rsc_table;
> > rproc->ops->find_loaded_rsc_table =
> > rproc_elf_find_loaded_rsc_table;
> > rproc->ops->sanity_check = rproc_elf_sanity_check;
> > rproc->ops->get_boot_addr = rproc_elf_get_boot_addr;
> > diff --git a/drivers/remoteproc/remoteproc_internal.h
> > b/drivers/remoteproc/remoteproc_internal.h
> > index 55a2950c5cb7..7570beb035b5 100644
> > --- a/drivers/remoteproc/remoteproc_internal.h
> > +++ b/drivers/remoteproc/remoteproc_internal.h
> > @@ -88,11 +88,10 @@ int rproc_load_segments(struct rproc *rproc, const
> > struct firmware *fw)
> > return -EINVAL;
> > }
> >
> > -static inline int rproc_load_rsc_table(struct rproc *rproc,
> > - const struct firmware *fw)
> > +static inline int rproc_parse_fw(struct rproc *rproc, const struct firmware
> > *fw)
> > {
> > - if (rproc->ops->load_rsc_table)
> > - return rproc->ops->load_rsc_table(rproc, fw);
> > + if (rproc->ops->parse_fw)
> > + return rproc->ops->parse_fw(rproc, fw);
> >
> > return 0;
> > }
> > diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
> > index de6e20a3f061..dc93ac3d1692 100644
> > --- a/include/linux/remoteproc.h
> > +++ b/include/linux/remoteproc.h
> > @@ -343,7 +343,7 @@ struct rproc_ops {
> > int (*stop)(struct rproc *rproc);
> > void (*kick)(struct rproc *rproc, int vqid);
> > void * (*da_to_va)(struct rproc *rproc, u64 da, int len);
> > - int (*load_rsc_table)(struct rproc *rproc, const struct firmware *fw);
> > + int (*parse_fw)(struct rproc *rproc, const struct firmware *fw);
> > struct resource_table *(*find_loaded_rsc_table)(
> > struct rproc *rproc, const struct firmware
> > *fw);
> > int (*load)(struct rproc *rproc, const struct firmware *fw);
> > --
> > 2.15.0
> >
> > --
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