Commit Graph

19 Commits

Author SHA1 Message Date
Andrew Davis
173d2c6326 remoteproc: st: Use devm_rproc_alloc() helper
Use the device lifecycle managed allocation function. This helps prevent
mistakes like freeing out of order in cleanup functions and forgetting to
free on error paths.

Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20240123184632.725054-8-afd@ti.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2024-02-02 11:36:27 -07:00
Nathan Chancellor
3d8a18697a remoteproc: st: Fix sometimes uninitialized ret in st_rproc_probe()
Clang warns (or errors with CONFIG_WERROR=y):

  drivers/remoteproc/st_remoteproc.c:357:6: error: variable 'ret' is used uninitialized whenever 'if' condition is true [-Werror,-Wsometimes-uninitialized]
    357 |         if (!ddata->config)
        |             ^~~~~~~~~~~~~~
  drivers/remoteproc/st_remoteproc.c:442:9: note: uninitialized use occurs here
    442 |         return ret;
        |                ^~~
  drivers/remoteproc/st_remoteproc.c:357:2: note: remove the 'if' if its condition is always false
    357 |         if (!ddata->config)
        |         ^~~~~~~~~~~~~~~~~~~
    358 |                 goto free_rproc;
        |                 ~~~~~~~~~~~~~~~
  drivers/remoteproc/st_remoteproc.c:348:9: note: initialize the variable 'ret' to silence this warning
    348 |         int ret, i;
        |                ^
        |                 = 0
  1 error generated.

Set ret to -ENODEV, which seems to be a standard return code when
device_get_match_data() returns NULL.

Closes: https://github.com/ClangBuiltLinux/linux/issues/1944
Fixes: 5c77ebcd05 ("remoteproc: st: Use device_get_match_data()")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20231012-st_remoteproc-fix-sometimes-uninit-v1-1-f64d0f2d5b37@kernel.org
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2023-10-16 11:24:34 -06:00
Rob Herring
5c77ebcd05 remoteproc: st: Use device_get_match_data()
Use preferred device_get_match_data() instead of of_match_device() to
get the driver match data. With this, adjust the includes to explicitly
include the correct headers.

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://lore.kernel.org/r/20231009211356.3242037-10-robh@kernel.org
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2023-10-11 11:38:20 -06:00
Uwe Kleine-König
b8b87e8819 remoteproc: st: Convert to platform remove callback returning void
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://lore.kernel.org/r/20230504194453.1150368-17-u.kleine-koenig@pengutronix.de
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2023-05-09 13:37:08 -06:00
Rob Herring
1f6fa392a9 remoteproc: st: Use of_property_present() for testing DT property presence
It is preferred to use typed property access functions (i.e.
of_property_read_<type> functions) rather than low-level
of_get_property/of_find_property functions for reading properties. As
part of this, convert of_get_property/of_find_property calls to the
recently added of_property_present() helper when we just want to test
for presence of a property and nothing more.

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230310144736.1546972-1-robh@kernel.org
2023-04-18 18:56:51 -07:00
Mathieu Poirier
8a74918948 remoteproc: st: Call of_node_put() on iteration error
Function of_phandle_iterator_next() calls of_node_put() on the last
device_node it iterated over, but when the loop exits prematurely it has
to be called explicitly.

Fixes: 3df52ed7f2 ("remoteproc: st: add reserved memory support")
Cc: stable@vger.kernel.org
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Link: https://lore.kernel.org/r/20230320221826.2728078-3-mathieu.poirier@linaro.org
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2023-04-03 10:50:03 -06:00
Clement Leger
e29ff72b77 remoteproc: remove rproc_elf32_sanity_check
Since checks are present in the remoteproc elf loader before calling
da_to_va, loading a elf64 will work on 32bits flavors of kernel.
Indeed, if a segment size is larger than what size_t can hold, the
loader will return an error so the functionality is equivalent to
what exists today.

Acked-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Clement Leger <cleger@kalray.eu>
Link: https://lore.kernel.org/r/20200422093017.10985-1-cleger@kalray.eu
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2020-04-22 21:57:26 -07:00
Clement Leger
826c339099 remoteproc: Rename rproc_elf_sanity_check for elf32
Since this function will be modified to support both elf32 and elf64,
rename the existing one to elf32 (which is the only supported format
at the moment). This will allow not to introduce possible side effect
when adding elf64 support (ie: all backends will still support only
elf32 if not requested explicitely using rproc_elf_sanity_check).

Signed-off-by: Clement Leger <cleger@kalray.eu>
Link: https://lore.kernel.org/r/20200302093902.27849-6-cleger@kalray.eu
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2020-03-25 22:29:40 -07:00
Clement Leger
e4ae4b7d01 remoteproc: Use u64 type for boot_addr
elf64 entry is defined as a u64. Since boot_addr is used to store the
elf entry point, change boot_addr type to u64 to support both elf32
and elf64. In the same time, fix users that were using this variable.

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Clement Leger <cleger@kalray.eu>
Link: https://lore.kernel.org/r/20200302093902.27849-4-cleger@kalray.eu
[bjorn: Fixes up return type of rproc_get_boot_addr()]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2020-03-25 22:29:39 -07:00
Thomas Gleixner
d2912cb15b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:55 +02:00
Loic Pallardy
3df52ed7f2 remoteproc: st: add reserved memory support
ST remote processor needs some specified memory regions for
firmware and IPC.
Memory regions are defined as reserved memory and should
be registered in remoteproc core thanks to rproc_add_carveout
function before rproc_start. For this, st rproc driver implements
prepare ops.

Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2019-02-20 21:15:38 -08:00
Philipp Zabel
1e13c7fb49 remoteproc: st: explicitly request exclusive reset control
Commit a53e35db70 ("reset: Ensure drivers are explicit when requesting
reset lines") started to transition the reset control request API calls
to explicitly state whether the driver needs exclusive or shared reset
control behavior. Convert all drivers requesting exclusive resets to the
explicit API call so the temporary transition helpers can be removed.

No functional changes.

Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Ohad Ben-Cohen <ohad@wizery.com>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: linux-remoteproc@vger.kernel.org
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-08-27 23:18:52 -07:00
Loic Pallardy
231c8dfd1a remoteproc: st: add virtio communication support
This patch provides virtio communication support based on mailbox
for ST co-processors.

Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-02-06 13:10:12 -08:00
Loic Pallardy
3e49ecf6b4 remoteproc: st: correct probe error management
Associated clock is prepared in st_rproc_parse_dt function.
it should be unprepared in case of error during probing.

Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-02-06 13:09:01 -08:00
Bhumika Goyal
c008fad264 drivers: remoteproc: constify rproc_ops structures
Declare rproc_ops structures as const as they are only passed as an
argument to the function rproc_alloc. This argument is of type const, so
rproc_ops structures having this property can be declared const too.
Done using Coccinelle:

@r1 disable optional_qualifier @
identifier i;
position p;
@@
static struct rproc_ops i@p = {...};

@ok1@
identifier r1.i;
position p;
@@
rproc_alloc(...,&i@p,...)

@bad@
position p!={r1.p,ok1.p};
identifier r1.i;
@@
i@p

@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
+const
struct rproc_ops i;

File size details:

Size of the file remoteproc/da8xx_remoteproc.o remains the same before and
after applying the changes.

   text	   data	    bss	    dec	    hex	filename
   1312	    100	      4	   1416	    588 remoteproc/da8xx_remoteproc.o
   1312	    100	      4	   1416	    588 remoteproc/da8xx_remoteproc.o

    970	    240	      0	   1210	    4ba remoteproc/omap_remoteproc.o
   1002	    192	      0	   1194	    4aa remoteproc/omap_remoteproc.o

   1901	    240	      0	   2141	    85d remoteproc/st_remoteproc.o
   1933	    192	      0	   2125	    84d remoteproc/st_remoteproc.o

   1288	     96	      0	   1384	    568 remoteproc/st_slim_rproc.o
   1320	     64	      0	   1384	    568 remoteproc/st_slim_rproc.o

   2121	    240	      0	   2361	    939 remoteproc/wkup_m3_rproc.o
   2161	    192	      0	   2353	    931 remoteproc/wkup_m3_rproc.o

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-01-18 10:46:50 -08:00
Wei Yongjun
1d701d3dd8 remoteproc: st: Fix error return code in st_rproc_probe()
Fix to return a negative error code from the st_rproc_state() error
handling case instead of 0, as done elsewhere in this function.

Fixes: 63edb0310a ("remoteproc: Supply controller driver for ST's Remote Processors")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-10-31 17:36:10 -07:00
Bjorn Andersson
433c0e04bc remoteproc: Split driver and consumer dereferencing
In order to be able to lock a rproc driver implementations only when
used by a client, we must differ between the dereference operation of a
client and the implementation itself.

This patch brings no functional change.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-10-02 22:50:21 -07:00
Vladimir Zapolskiy
4b28038fd6 remoteproc: st: fix check of syscon_regmap_lookup_by_phandle() return value
syscon_regmap_lookup_by_phandle() returns either a valid pointer to
struct regmap or ERR_PTR() error value, check for NULL is invalid and
on error path may lead to oops, the change corrects the check.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-03-28 16:19:00 -07:00
Lee Jones
63edb0310a remoteproc: Supply controller driver for ST's Remote Processors
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-01-29 17:26:49 -08:00