Commit Graph

271 Commits

Author SHA1 Message Date
Linus Torvalds
4f88bd23ba remoteproc updates for v4.15
This adds an interface for configuring Qualcomm's "secure SMMU" and adds
 support for booting the modem Hexagon on MSM8996.
 
 Two new debugfs entries are added in the remoteproc core to introspect the list
 of memory carveouts and the loaded resource table.
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Merge tag 'rproc-v4.15' of git://github.com/andersson/remoteproc

Pull remoteproc updates from Bjorn Andersson:
 "This adds an interface for configuring Qualcomm's "secure SMMU" and
  adds support for booting the modem Hexagon on MSM8996.

  Two new debugfs entries are added in the remoteproc core to introspect
  the list of memory carveouts and the loaded resource table"

* tag 'rproc-v4.15' of git://github.com/andersson/remoteproc:
  remoteproc: qcom: Fix error handling paths in order to avoid memory leaks
  remoteproc: qcom: Drop pr_err in q6v5_xfer_mem_ownership()
  remoteproc: debug: add carveouts list dump feature
  remoteproc: debug: add resource table dump feature
  remoteproc: qcom: Add support for mss remoteproc on msm8996
  remoteproc: qcom: Make secure world call for mem ownership switch
  remoteproc: qcom: refactor mss fw image loading sequence
  firmware: scm: Add new SCM call API for switching memory ownership
2017-11-17 20:14:10 -08:00
Linus Torvalds
bedf571986 rpmsg updates for v4.15
This turn RPMSG_VIRTIO into a user selectable config, fixes a few bugs in GLINK
 and provides the support for specifying initial buffer sizes for GLINK
 channels.
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Merge tag 'rpmsg-v4.15' of git://github.com/andersson/remoteproc

Pull rpmsg updates from Bjorn Andersson:

 - turn RPMSG_VIRTIO into a user selectable config

 - fix few bugs in GLINK

 - provide the support for specifying initial buffer sizes for GLINK
   channels.

* tag 'rpmsg-v4.15' of git://github.com/andersson/remoteproc:
  rpmsg: glink: The mbox client knows_txdone
  rpmsg: glink: Add missing MODULE_LICENSE
  rpmsg: glink: Use best fit intent during tx
  rpmsg: glink: Add support to preallocate intents
  dt-bindings: soc: qcom: Support GLINK intents
  rpmsg: glink: Initialize the "intent_req_comp" completion variable
  rpmsg: Allow RPMSG_VIRTIO to be enabled via menuconfig or defconfig
2017-11-17 20:12:08 -08:00
Christophe JAILLET
1a5d5c592e remoteproc: qcom: Fix error handling paths in order to avoid memory leaks
In case of error returned by 'q6v5_xfer_mem_ownership', we must free
some resources before returning.

In 'q6v5_mpss_init_image()', add a new label to undo a previous
'dma_alloc_attrs()'.
In 'q6v5_mpss_load()', re-use the already existing error handling code to
undo a previous 'request_firmware()', as already done in the other error
handling paths of the function.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-11-14 23:20:11 -08:00
Bjorn Andersson
9f2a4342a8 remoteproc: qcom: Drop pr_err in q6v5_xfer_mem_ownership()
The pr_err() in q6v5_xfer_mem_ownership() prints, upon failure, the
memory range that failed to be transitioned. But on 32-bit architectures
with CONFIG_PHYS_ADDR_T_64BIT set we cannot cast the phys_addr_t
variable to a pointer, per below build error. Instead these should be
formatted with %pap.

In file included from include/linux/kernel.h:14:0,
                 from include/linux/clk.h:16,
                 from drivers/remoteproc/qcom_q6v5_pil.c:18:
drivers/remoteproc/qcom_q6v5_pil.c: In function 'q6v5_xfer_mem_ownership':
drivers/remoteproc/qcom_q6v5_pil.c:337:10: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
          (void *)addr, (void *)(addr + size),
          ^

Most callers will upon failure print a specific error message describing
which memory region that we failed to pass ownership of, so rather than
fixing the format string this patch fixes up the last callers and drop
the print from this function, saving us from spamming the log in most of
these error cases.

Fixes: 6c5a9dc248 ("remoteproc: qcom: Make secure world call for mem ownership switch")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-11-06 22:37:39 -08:00
Loic Pallardy
b891883941 remoteproc: debug: add carveouts list dump feature
This patch offers the capability to dump memory carveouts associated
to one remoteprocessor.

Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-11-06 21:57:27 -08:00
Loic Pallardy
bdd8edb9b0 remoteproc: debug: add resource table dump feature
This patch adds the capability to display the content of
the resource table associated to a remote processor firmware.

Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-11-06 21:57:21 -08:00
Greg Kroah-Hartman
b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00
Avaneesh Kumar Dwivedi
9f058fa2ef remoteproc: qcom: Add support for mss remoteproc on msm8996
This patch add support for mss boot on msm8996. Major changes
include initializing mss rproc for msm8996, making appropriate
change for executing mss reset sequence etc.

Tested-and-acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-10-30 18:37:23 -07:00
Avaneesh Kumar Dwivedi
6c5a9dc248 remoteproc: qcom: Make secure world call for mem ownership switch
MSS proc on msm8996 can not access fw loaded region without stage
second translation of memory pages where mpss image are loaded.
This patch in order to enable mss boot on msm8996 invoke scm call
to switch or share ownership between apps and modem.

Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@codeaurora.org>
[bjorn: Corrected error path in q6v5_start()]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-10-30 18:37:22 -07:00
Avaneesh Kumar Dwivedi
94c907859a remoteproc: qcom: refactor mss fw image loading sequence
This patch refactor code to first load all firmware blobs
and then update modem proc to authenticate and boot fw.

Tested-and-acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-10-30 18:37:22 -07:00
Anup Patel
4d91d7b099 rpmsg: Allow RPMSG_VIRTIO to be enabled via menuconfig or defconfig
Currently, RPMSG_VIRTIO can only be enabled if some other kconfig
option selects it. This does not allow it to be enabled for
virtualized systems where Virtio RPMSG is available over Virtio
MMIO or PCI transport.

This patch updates RPMSG_VIRTIO kconfig option so that we can
enable the VirtIO RPMSG driver via menuconfig or defconfig. The
patch also removes "select RPMSG_VIRTIO" from various remoteproc
kconfig options because it is now user selectable.

Signed-off-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-10-25 21:51:05 -07:00
Wei Yongjun
68a39a3e9f remoteproc: imx_rproc: fix return value check in imx_rproc_addr_init()
In case of error, the function devm_ioremap() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should
be replaced with NULL test.

Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-10-11 10:47:47 -07:00
Arnd Bergmann
ab759b9732 remoteproc: qcom: fix RPMSG_QCOM_GLINK_SMEM dependencies
When RPMSG_QCOM_GLINK_SMEM=m and one driver causes the qcom_common.c file
to be compiled as built-in, we get a link error:

drivers/remoteproc/qcom_common.o: In function `glink_subdev_remove':
qcom_common.c:(.text+0x130): undefined reference to `qcom_glink_smem_unregister'
qcom_common.c:(.text+0x130): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `qcom_glink_smem_unregister'
drivers/remoteproc/qcom_common.o: In function `glink_subdev_probe':
qcom_common.c:(.text+0x160): undefined reference to `qcom_glink_smem_register'
qcom_common.c:(.text+0x160): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `qcom_glink_smem_register'

Out of the three PIL driver instances, QCOM_ADSP_PIL already has a
Kconfig dependency to prevent this from happening, but the other two
do not. This adds the same dependency there.

Fixes: eea07023e6 ("remoteproc: qcom: adsp: Allow defining GLINK edge")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-10-10 11:28:20 -07:00
Dan Carpenter
68c2d645eb remoteproc: imx_rproc: fix a couple off by one bugs
The priv->mem[] array has IMX7D_RPROC_MEM_MAX elements so the > should
be >= to avoid writing one element beyond the end of the array.

Fixes: a0ff4aa6f0 ("remoteproc: imx_rproc: add a NXP/Freescale imx_rproc driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-10-10 11:22:55 -07:00
Linus Torvalds
7151202b64 rpmsg updates for v4.14
This extends the Qualcomm GLINK implementation to support the additional
 features used for communicating with modem and DSP coprocessors in modern
 Qualcomm platforms.
 
 In addition to this there's support for placing virtio RPMSG buffers in
 non-System RAM.
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Merge tag 'rpmsg-v4.14' of git://github.com/andersson/remoteproc

Pull rpmsg updates from Bjorn Andersson:
 "This extends the Qualcomm GLINK implementation to support the
  additional features used for communicating with modem and DSP
  coprocessors in modern Qualcomm platforms.

  In addition to this there's support for placing virtio RPMSG buffers
  in non-System RAM"

* tag 'rpmsg-v4.14' of git://github.com/andersson/remoteproc: (29 commits)
  rpmsg: glink: initialize ret to zero to ensure error status check is correct
  rpmsg: glink: fix null pointer dereference on a null intent
  dt-bindings: soc: qcom: Extend GLINK to cover SMEM
  remoteproc: qcom: adsp: Allow defining GLINK edge
  rpmsg: glink: Export symbols from common code
  rpmsg: glink: Release idr lock before returning on error
  rpmsg: glink: Handle remote rx done command
  rpmsg: glink: Request for intents when unavailable
  rpmsg: glink: Use the intents passed by remote
  rpmsg: glink: Receive and store the remote intent buffers
  rpmsg: glink: Add announce_create ops and preallocate intents
  rpmsg: glink: Add rx done command
  rpmsg: glink: Make RX FIFO peak accessor to take an offset
  rpmsg: glink: Use the local intents when receiving data
  rpmsg: glink: Add support for TX intents
  rpmsg: glink: Fix idr_lock from mutex to spinlock
  rpmsg: glink: Add support for transport version negotiation
  rpmsg: glink: Introduce glink smem based transport
  rpmsg: glink: Do a mbox_free_channel in remove
  rpmsg: glink: Return -EAGAIN when there is no FIFO space
  ...
2017-09-09 14:34:38 -07:00
Bjorn Andersson
7c89717f82 remoteproc: Introduce rproc handle accessor for children
In certain circumstances rpmsg devices needs to acquire a handle to the
ancestor remoteproc instance, e.g. to invoke rproc_report_crash() when a
fatal error is detected. Introduce an interface that walks the device
tree in search for a remoteproc instance and return this.

Tested-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-09-01 15:49:13 -07:00
Bjorn Andersson
4fec0a5a19 remoteproc: qcom: Make ssr_notifiers local
The ssr_notifiers variable should be local, so add the missing static
storage classifier.

Fixes: 1e140df049 ("remoteproc: qcom: Add support for SSR notifications")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-09-01 15:42:29 -07:00
Bjorn Andersson
eea07023e6 remoteproc: qcom: adsp: Allow defining GLINK edge
Introduce the GLINK subdev, which allows the definition of a GLINK edge
as child of a remoteproc.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-09-01 15:31:23 -07:00
Bjorn Andersson
f9cbbd256c remoteproc: Stop subdevices in reverse order
Subdevices might depend on earlier registered subdevices for
communication purposes, as such they should be stopped in reverse order
so that said communication channel is removed after the dependent
subdevice is stopped.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-08-30 16:29:55 -07:00
Oleksij Rempel
a0ff4aa6f0 remoteproc: imx_rproc: add a NXP/Freescale imx_rproc driver
Provide a basic driver to control Cortex M4 co-processor found
on NXP i.MX7D and i.MX6SX.
Currently it is able to resolve addresses between M4 and main CPU,
start and stop the co-processor. Other functionality is not provided
or test.

This driver was tested on NXP i.MX7D and expected to work on
i.MX6SX as well.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-08-30 16:07:41 -07:00
Himanshu Jha
c76929b3c6 remoteproc: qcom: Use PTR_ERR_OR_ZERO
Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR

Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-08-29 15:34:19 -07:00
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
Philipp Zabel
5acbf7e520 remoteproc: qcom: 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: 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 23:18:35 -07:00
Philipp Zabel
f5f98654a2 remoteproc/keystone: 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: Ohad Ben-Cohen <ohad@wizery.com>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: linux-remoteproc@vger.kernel.org
Acked-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-08-27 23:16:22 -07:00
Suman Anna
b4daf89057 remoteproc/keystone: Add support for Keystone 66AK2G SOCs
Add support to the keystone remoteproc driver for managing the
DSP present in the Keystone 2 66AK2G SoC. The 66AK2G SoC has
a Power Management Micro Controller (PMMC) that manages the
individual device's power, clock and reset functionalities.

The keystone remoteproc driver already uses standard frameworks
for reset and clock control, so it doesn't require any significant
modifications other than a new compatible suitable for 66AK2G DSP.

The binding document is also updated to reflect the modified
property values used by the 66AK2G DSP node as compared to the
values used by existing Keystone 2 DSPs.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-08-24 12:01:29 -07:00
Suman Anna
616965805f remoteproc/davinci: Add device tree support for OMAP-L138 DSP
The Davinci remoteproc driver currently supports the DSP remoteproc
device created in legacy-style on OMAP-L13x SoCs. The driver has been
enhanced to support the DSP remoteproc device created through Device
Tree now. The current DT support handles the C674x DSP processor
subsystem on OMAP-L138 SoCs.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-08-24 12:00:21 -07:00
Suman Anna
59b2355fc9 remoteproc/davinci: Add support to parse internal memories
The DSP subsystem on OMAP-L13x SoCs has various internal RAM
memories that can accessed from the ARM side. These memories
can be configured to be used as either RAM or Cache.

The Davinci remoteproc driver has been enhanced to parse and
store the kernel mappings for these internal RAM memories.
These mappings can then be used to support direct loading of
text/data into these memories from the remoteproc driver.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-08-24 11:59:55 -07:00
Suman Anna
6fb9a8f5ad remoteproc/davinci: Switch to platform_get_resource_byname()
The davinci remoteproc driver currently uses the platform_get_resource()
API for retrieving the IOMEM resources. Switch this function to use the
platform_get_resource_byname() API instead in preparation for adding the
DT support so that the binding can be agnostic of the IOMEM resource
order.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-08-24 11:59:53 -07:00
Bhumika Goyal
c42ca04da5 remoteproc: make device_type const
Make this const as it is only stored in the type field of a device
structure, which is const.
Done using Coccinelle.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-08-24 10:25:50 -07:00
Bjorn Andersson
1e140df049 remoteproc: qcom: Add support for SSR notifications
This adds the remoteproc part of subsystem restart, which is responsible
for emitting notifications to other processors in the system about a
dying remoteproc instance.

These notifications are propagated to the various communication systems
in the various remote processors to shut down communication links that
was left in a dangling state as the remoteproc was stopped (or crashed).

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-08-02 12:43:20 -07:00
Suman Anna
1b0ef9068f remoteproc: Merge __rproc_boot() with rproc_boot()
The additional arguments in the internal __rproc_boot() function
were dropped in commit 2bfc311a57 ("remoteproc: Drop wait in
__rproc_boot()"). The exported rproc_boot() is now just a wrapper
around this internal function, so merge them together.

While at this, also remove the declaration for the previously
cleaned up rproc_boot_nowait() function.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-07-26 10:01:27 -07:00
Suman Anna
b0af7b7dbe remoteproc/keystone: Fix circular dependencies for ARM configs
Drop the dependency on RESET_CONTROLLER for the Keystone remoteproc
driver to resolve some circular dependencies around different choices
for RESET_CONTROLLER on common ARM configs. This dependency is
inherent as the RESET_CONTROLLER will be enabled due to the enabled
ARCH_HAS_RESET_CONTROLLER for ARCH_KEYSTONE.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-06-27 16:21:34 -07:00
Suman Anna
e3f37c5ed7 remoteproc: Drop redundant REMOTEPROC dependency from driver Kconfigs
All the remoteproc platform driver Kconfig symbols are defined and
included under an if REMOTEPROC condition, so the dependency on
REMOTEPROC is implicit and they do not need an explicit 'depends
on REMOTEPROC' line. So, clean these up.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-06-27 16:01:14 -07:00
Suman Anna
384700d465 remoteproc: Drop VIRTUALIZATION dependency from REMOTEPROC
A dependency to VIRTUALIZATION has been added to REMOTEPROC in v3.10
kernel in commit b9777859ec ("remoteproc: fix kconfig dependencies
for VIRTIO") to resolve Kconfig warnings due to the inclusion of the
virtio configuration file from the ARM's KVM config file. The KVM
config was fixed properly in the subsequent release in commit
8bd4ffd6b3 ("ARM: kvm: don't include drivers/virtio/Kconfig").
So, drop this unneeded VIRTUALIZATION dependency from REMOTEPROC.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-06-27 16:01:00 -07:00
Andrew F. Davis
11d2a2ffa8 remoteproc/keystone: Ensure the DSPs are in reset in probe
The DSPs are expected to be in reset when the driver probes a device.
If the DSPs are out of reset in probe, the system may crash when the
firmware is being loaded. So, add a check to make sure the DSP resets
are asserted, and if not, throw a eye-catchy warning and assert the
resets specifically.

Signed-off-by: Andrew F. Davis <afd@ti.com>
[s-anna@ti.com: replace warning with a WARN]
Signed-off-by: Suman Anna <s-anna@ti.com>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-06-26 13:02:44 -07:00
Suman Anna
e88bb8f7a1 remoteproc/keystone: Add a remoteproc driver for Keystone 2 DSPs
The Texas Instrument's Keystone 2 family of SoCs has 1 or more
TMS320C66x DSP Core Subsystems (C66x CorePacs). Each subsystem has
a C66x Fixed/Floating-Point DSP Core, with 32KB of L1P and L1D SRAMs,
that can be configured and partitioned as either RAM and/or Cache,
and 1 MB of L2 SRAM. The CorePac also includes an Internal DMA (IDMA),
External Memory Controller (EMC), Extended Memory Controller (XMC)
with a Memory Protection and Address Extension (MPAX) unit, a Bandwidth
Management (BWM) unit, an Interrupt Controller (INTC) and a Powerdown
Controller (PDC).

A new remoteproc module is added to perform the device management of
these DSP devices. The driver expects the firmware names to be of the
form "keystone-dsp<X>-fw", where X is the corresponding DSP number, and
uses the standard remoteproc core ELF loader. The support is limited
to images only using the DSP internal memories at the moment. This
remoteproc driver is also designed to work with virtio, and uses the
IPC Generation registers for performing the virtio signalling and
getting notified of exceptions.

The driver currently supports the 66AK2H/66AK2K, 66AK2L and 66AK2E
SoCs.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Sam Nelson <sam.nelson@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-06-26 13:02:38 -07:00
Suman Anna
a63c70d4dc remoteproc/davinci: fix unbalanced reset between start and stop ops
The davinci remoteproc driver is currently de-asserting the reset in
its rproc .start() ops, but is not asserting the reset in its .stop()
ops. This leaves the remote processor to not boot properly when using
the sysfs 'state' variable between multiple start and stop operations.
On the other hand, a reset is being asserted unconditionally in the
driver remove function to alleviate some of these issues.

Move this reset assertion logic into the .stop() ops implementation
to fix the sysfs state-machine and the unbalanced reset. The logic
from remove is still effective since .stop() ops will be invoked
during the remove due to the enabled 'auto-boot' support. The probe
already has support for asserting the reset in case the DSP is not
in reset for some reason.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-06-25 14:00:54 -07:00
Suman Anna
470ac62fe5 remoteproc/davinci: simplify the reset function
The reset_assert() function is used to make sure the DSP remote
processor is in a reset state regardless of its previous state.
The driver relies on davinci_clk_reset_{assert,deassert}()
functions for reset management which take in a clock parameter.
The assert_reset() performs a clk_get()/clk_put() cycle to
acquire the clock handle to use with this function. This is
totally unnecessary and the code can be simplified to use
the clock acquired during probe and directly use the reset
functions, so simplify this logic.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-06-25 14:00:00 -07:00
Suman Anna
c51e882cd7 remoteproc/davinci: Update Kconfig to depend on DMA_CMA
The davinci remoteproc driver requires a CMA pool for allocating
memory for virtio vrings/buffers and other sections of the firmware
image. The allocations are done using the DMA API. The CMA option is
currently selected automatically on systems with MMU when davinci
remoteproc is enabled, switch this to a saner depends on dependency
convention. The dependency is also updated to use the DMA_CMA kconfig
symbol that is used for CMA allocations using the DMA API, the CMA
dependency is inherited implicitly.

Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-06-25 13:59:58 -07:00
Colin Ian King
ca91ab5f11 remoteproc: fix spelling mistake: "Resouce" -> "Resource"
Trivial fix to spelling mistake in dev_err message

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-05-30 20:57:40 -07:00
Sarangdhar Joshi
7e83cab824 remoteproc: Modify recovery path to use rproc_{start,stop}()
Replace rproc_shutdown() by rproc_stop() and rproc_boot() by
rproc_start() in the recovery path, in order to avoid remoteproc
resources re-allocation overhead and to assist with extracting the
coredumps after stopping the remote processor.

Signed-off-by: Sarangdhar Joshi <spjoshi@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-05-26 18:11:33 -07:00
Sarangdhar Joshi
1efa30d089 remoteproc: Introduce rproc_{start,stop}() functions
In the context of recovering from crash, rproc_trigger_recovery() does
rproc_shutdown() followed by rproc_boot(). The remoteproc resources are
cleaned up in rproc_shutdown() and immediately reallocated in
rproc_boot() which is an unnecessary overhead. Furthermore, we want the
memory regions to be accessible after stopping the remote processor, to
be able to extract the memory content for a coredump.

This patch factors out the code in rproc_boot() and rproc_shutdown()
path and introduces rproc_{start,stop}() in order to avoid resource
allocation overhead.

Signed-off-by: Sarangdhar Joshi <spjoshi@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-05-26 18:11:31 -07:00
Linus Torvalds
c44b594303 virtio: fixes, cleanups, performance
A bunch of changes to virtio, most affecting virtio net.
 ptr_ring batched zeroing - first of batching enhancements
 that seems ready.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "Fixes, cleanups, performance

  A bunch of changes to virtio, most affecting virtio net. Also ptr_ring
  batched zeroing - first of batching enhancements that seems ready."

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  s390/virtio: change maintainership
  tools/virtio: fix spelling mistake: "wakeus" -> "wakeups"
  virtio_net: tidy a couple debug statements
  ptr_ring: support testing different batching sizes
  ringtest: support test specific parameters
  ptr_ring: batch ring zeroing
  virtio: virtio_driver doc
  virtio_net: don't reset twice on XDP on/off
  virtio_net: fix support for small rings
  virtio_net: reduce alignment for buffers
  virtio_net: rework mergeable buffer handling
  virtio_net: allow specifying context for rx
  virtio: allow extra context per descriptor
  tools/virtio: fix build breakage
  virtio: add context flag to find vqs
  virtio: wrap find_vqs
  ringtest: fix an assert statement
2017-05-10 11:33:08 -07:00
Michael S. Tsirkin
f94682dde5 virtio: add context flag to find vqs
Allows maintaining extra context per vq.  For ease of use, passing in
NULL is legal and disables the feature for all vqs.

Includes fixes by Christian for s390, acked by Cornelia.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-05-02 23:41:43 +03:00
Bjorn Andersson
395a48053a soc: qcom: smd: Remove standalone driver
Remove the standalone SMD implementation as we have transitioned the
client drivers to use the RPMSG based one.

Also remove all dependencies on QCOM_SMD from Kconfig files, in order to
keep them selectable in the absence of the removed symbol.

Acked-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-28 17:58:07 -07:00
Arnd Bergmann
c3104aae5d remoteproc: qcom: fix QCOM_SMD dependencies
qcom_smd_register_edge() is provided by either QCOM_SMD or RPMSG_QCOM_SMD,
and if both of them are disabled, it does nothing.

The check for the PIL drivers however only checks for QCOM_SMD, so it breaks
with QCOM_SMD=n && RPMSG_QCOM_SMD=m:

drivers/remoteproc/built-in.o: In function `smd_subdev_remove':
qcom_wcnss_iris.c:(.text+0x231c): undefined reference to `qcom_smd_unregister_edge'
drivers/remoteproc/built-in.o: In function `smd_subdev_probe':
qcom_wcnss_iris.c:(.text+0x2344): undefined reference to `qcom_smd_register_edge'
drivers/remoteproc/built-in.o: In function `smd_subdev_probe':
qcom_q6v5_pil.c:(.text+0x3538): undefined reference to `qcom_smd_register_edge'
qcom_q6v5_pil.c:(.text+0x3538): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `qcom_smd_register_edge'

This clarifies the Kconfig dependency.

Fixes: 4b48921a8f ("remoteproc: qcom: Use common SMD edge handler")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-03-20 14:45:44 -07:00
Linus Torvalds
54d7989f47 virtio, vhost: optimizations, fixes
Looks like a quiet cycle for vhost/virtio, just a couple of minor
 tweaks. Most notable is automatic interrupt affinity for blk and scsi.
 Hopefully other devices are not far behind.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull vhost updates from Michael Tsirkin:
 "virtio, vhost: optimizations, fixes

  Looks like a quiet cycle for vhost/virtio, just a couple of minor
  tweaks. Most notable is automatic interrupt affinity for blk and scsi.
  Hopefully other devices are not far behind"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio-console: avoid DMA from stack
  vhost: introduce O(1) vq metadata cache
  virtio_scsi: use virtio IRQ affinity
  virtio_blk: use virtio IRQ affinity
  blk-mq: provide a default queue mapping for virtio device
  virtio: provide a method to get the IRQ affinity mask for a virtqueue
  virtio: allow drivers to request IRQ affinity when creating VQs
  virtio_pci: simplify MSI-X setup
  virtio_pci: don't duplicate the msix_enable flag in struct pci_dev
  virtio_pci: use shared interrupts for virtqueues
  virtio_pci: remove struct virtio_pci_vq_info
  vhost: try avoiding avail index access when getting descriptor
  virtio_mmio: expose header to userspace
2017-03-02 13:53:13 -08:00
Christoph Hellwig
fb5e31d970 virtio: allow drivers to request IRQ affinity when creating VQs
Add a struct irq_affinity pointer to the find_vqs methods, which if set
is used to tell the PCI layer to create the MSI-X vectors for our I/O
virtqueues with the proper affinity from the start.  Compared to after
the fact affinity hints this gives us an instantly working setup and
allows to allocate the irq descritors node-local and avoid interconnect
traffic.  Last but not least this will allow blk-mq queues are created
based on the interrupt affinity for storage drivers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-02-27 20:54:04 +02:00
Bjorn Andersson
01625cc5e6 remoteproc: qcom: mdt_loader: Use signed type for offset
In the transition from using rproc_da_to_va(), the type of the load
offset became unsigned. This causes the subsequent check to let negative
values less than p_memsz + mem_size through and we write outside of the
buffer.

Change the type back to a signed value to catch this.

Fixes: 7f0dd07a9b ("remoteproc: qcom: mdt_loader: Refactor MDT loader")
Fixes: e7fd252262 ("remoteproc: qcom: q6v5: Decouple driver from MDT loader")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reported-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Acked-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-02-22 02:07:13 -08:00
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