We can only use CMA on systems that have an MMU, because of
the requirement to use memory migration. NOMMU systems are
rather constrained to start with, but it seems reasonable
to assume that DMA allocations can still succeed in the
constrained case for remoteproc on NOMMU, so this patch
changes the da8xx implementation to not rely on CMA when
the MMU is disabled.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Cc: Ohad Ben-Cohen <ohad@wizery.com>
Cc: Robert Tivy <rtivy@ti.com>

The mailbox hardware (in OMAP) uses a queued mailbox interrupt
mechanism that provides a communication channel between processors
through a set of registers and their associated interrupt signals
by sending and receiving messages.

The OMAP mailbox framework/driver code is moved to be under
drivers/mailbox, in preparation for adapting to a common mailbox
driver framework. This allows the build for OMAP mailbox to be
enabled (it was disabled during the multi-platform support).

As part of the migration from plat and mach code:
- Kconfig symbols have been renamed to build OMAP1 or OMAP2+ drivers.
- mailbox.h under plat-omap/plat/include has been split into a public
  and private header files. The public header has only the API related
  functions and types.
- The module name mailbox.ko from plat-omap is changed to
  omap-mailbox.ko
- The module name mailbox_mach.ko from mach-omapX is changed as
    mailbox_omap1.ko for OMAP1
    mailbox_omap2.ko for OMAP2+

Cc: Tony Lindgren <tony@atomide.com>
[gregkh@linuxfoundation.org: ack for staging part]
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NOmar Ramirez Luna <omar.ramirez@copitl.com>
Signed-off-by: NSuman Anna <s-anna@ti.com>

Fix this:

warning: (VIRTIO_PCI && VIRTIO_MMIO && REMOTEPROC && RPMSG) selects VIRTIO which has unmet direct dependencies (VIRTUALIZATION)

Cc: stable@vger.kernel.org
Signed-off-by: NSuman Anna <s-anna@ti.com>
[edit commit log]
Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com>

Adding a new remoteproc driver for OMAP-L13x DSP
Signed-off-by: NRobert Tivy <rtivy@ti.com>
[removed 'EXPERIMENTAL' and fixed some indentation issues]
Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com>

Fix obvious typo introduced in commit e121aefa
("remoteproc: fix missing CONFIG_FW_LOADER configurations").

Cc: stable@vger.kernel.org
Signed-off-by: NRobert Tivy <rtivy@ti.com>
[cc stable, slight subject change]
Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com>

This allows building remoteproc on OMAP5 too.
Signed-off-by: NVincent Stehlé <v-stehle@ti.com>
[edit commit log]
Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com>

Copy resource table from first to second firmware loading.
After firmware is loaded to memory, update the vdevs resource
pointer to the resource table kept in device memory.
Signed-off-by: NSjur Brændeland <sjur.brandeland@stericsson.com>
Acked-by: NIdo Yariv <ido@wizery.com>
[rebase, terminology and style changes]
Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com>

Patch a62a6e98 "ARM: OMAP2+: Disable code that currently does not work
with multiplaform" makes the OMAP_MBOX_FWK option depend on !MULTIPLATFORM,
which means we cannot simply select that symbol from OMAP_REMOTEPROC.

Turning the 'select' into 'depends on' ensures that all dependencies
are correct until OMAP_MBOX_FWK loses its dependency.

Without this patch, building allmodconfig results in:

drivers/remoteproc/omap_remoteproc.c:31:26: fatal error: plat/mailbox.h: No such file or directory
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NTony Lindgren <tony@atomide.com>
Acked-by: NOhad Ben-Cohen <ohad@wizery.com>

The CONFIG_EXPERIMENTAL config item has not carried much meaning for a
while now and is almost always enabled by default. As agreed during the
Linux kernel summit, remove it from any "depends on" lines in Kconfigs.

CC: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/built-in.o: In function `rproc_virtio_finalize_features':
remoteproc_virtio.c:(.text+0x2f9a02): undefined reference to `vring_transport_features'
drivers/built-in.o: In function `rproc_virtio_del_vqs':
remoteproc_virtio.c:(.text+0x2f9a74): undefined reference to `vring_del_virtqueue'
drivers/built-in.o: In function `rproc_virtio_find_vqs':
remoteproc_virtio.c:(.text+0x2f9c44): undefined reference to `vring_new_virtqueue'
drivers/built-in.o: In function `rproc_add_virtio_dev':
(.text+0x2f9e2c): undefined reference to `register_virtio_device'
drivers/built-in.o: In function `rproc_vq_interrupt':
(.text+0x2f9db7): undefined reference to `vring_interrupt'
drivers/built-in.o: In function `rproc_remove_virtio_dev':
(.text+0x2f9e9f): undefined reference to `unregister_virtio_device'

Cc: stable@vger.kernel.org
Reported-by: NRandy Dunlap <rdunlap@xenotime.net>
Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com>

Add support for the STE modem shared memory driver.
This driver hooks into the remoteproc framework
in order to manage configuration and the virtio
devices.

This driver adds custom firmware handlers, because
STE modem uses a custom firmware layout.
Signed-off-by: NSjur Brændeland <sjur.brandeland@stericsson.com>
cc: Linus Walleij <linus.walleij@linaro.org>
cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
[ohad: validate mdev->ops, move setup() to probe/remove, trivial style changes]
Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com>

Remoteproc relies on HAS_DMA, add this dependency in Kconfig.

Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: NSjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com>

Remoteproc requires user space firmware loading support, so
let's select FW_LOADER explicitly to avoid painful misconfigurations
(which only show up in runtime).

Cc: stable <stable@vger.kernel.org>
Reported-by: NMark Grosen <mgrosen@ti.com>
Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com>

OMAP_REMOTEPROC selects REMOTEPROC and RPMSG, both of which depend
on EXPERIMENTAL, so let's have OMAP_REMOTEPROC depend on EXPERIMENTAL
too, in order to avoid the below randconfig warnings.

warning: (OMAP_REMOTEPROC) selects REMOTEPROC which has unmet direct dependencies (EXPERIMENTAL)
warning: (OMAP_REMOTEPROC) selects RPMSG which has unmet direct dependencies (EXPERIMENTAL)

Cc: stable <stable@vger.kernel.org>
Reported-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com>

1. Depend on OMAP_IOMMU instead of selecting it, to fix an unmet
   direct dependency of it (and its imminent build error)
2. Set default to 'no' (achieved implicitly by dropping the 'default'
   line)
Reported-by: NRussell King <linux@arm.linux.org.uk>
Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Mark Grosen <mgrosen@ti.com>
Cc: Suman Anna <s-anna@ti.com>
Cc: Fernando Guzman Lugo <fernando.lugo@ti.com>
Cc: Rob Clark <rob@ti.com>
Cc: Ludovic BARRE <ludovic.barre@stericsson.com>
Cc: Loic PALLARDY <loic.pallardy@stericsson.com>
Cc: Omar Ramirez Luna <omar.luna@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>

Remoteproc is still under development and as it gets traction we
definitely expect to do some changes in the binary format (most probably
only in the resource table, e.g. the upcoming move to TLV-based entries).

Active testing and use of remoteproc is most welcome, but we don't want
users to expect backward binary compatibility with the preliminary
images we have today.

Therefore mark remoteproc as EXPERIMENTAL, and explicitly inform the user
about this when a new remote processor is registered.
Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Rob Clark <rob@ti.com>
Cc: Mark Grosen <mgrosen@ti.com>
Cc: Ludovic BARRE <ludovic.barre@stericsson.com>

Add a dedicated Kconfig menu for the remoteproc drivers, so they
don't show up in the main driver menu.
Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com>

Add a remoteproc driver for OMAP4, so we can boot the dual-M3 and
and DSP subsystems.

Use the omap_device_* API to control the hardware state, and utilize
the OMAP mailbox to interrupt the remote processor when a new message
is pending (the mailbox payload is used to tell it which virtqueue was
the message placed in).

Conversely, when an inbound mailbox message arrives, tell the remoteproc
core which virtqueue is triggered.

Later we will also use the mailbox payload to signal omap-specific
events like remote crashes (which will be used to trigger remoteproc
recovery) and power management transitions. At that point we will also
extend the remoteproc core to support this.

Based on (but now quite far from) work done by Fernando Guzman Lugo
<fernando.lugo@ti.com> and Hari Kanigeri <h-kanigeri2@ti.com>.

Designed with Brian Swetland <swetland@google.com>.
Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Cc: Brian Swetland <swetland@google.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg KH <greg@kroah.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>

Modern SoCs typically employ a central symmetric multiprocessing (SMP)
application processor running Linux, with several other asymmetric
multiprocessing (AMP) heterogeneous processors running different instances
of operating system, whether Linux or any other flavor of real-time OS.

Booting a remote processor in an AMP configuration typically involves:
- Loading a firmware which contains the OS image
- Allocating and providing it required system resources (e.g. memory)
- Programming an IOMMU (when relevant)
- Powering on the device

This patch introduces a generic framework that allows drivers to do
that. In the future, this framework will also include runtime power
management and error recovery.

Based on (but now quite far from) work done by Fernando Guzman Lugo
<fernando.lugo@ti.com>.

ELF loader was written by Mark Grosen <mgrosen@ti.com>, based on
msm's Peripheral Image Loader (PIL) by Stephen Boyd <sboyd@codeaurora.org>.

Designed with Brian Swetland <swetland@google.com>.
Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Cc: Brian Swetland <swetland@google.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg KH <greg@kroah.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>