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This driver exposes a mailbox interface for interprocessor communication using the Hardware Synchronization Primitives (HSP) module's doorbell mechanism. There are multiple HSP instances and they provide additional features such as shared mailboxes, shared and arbitrated semaphores. A driver for a remote processor can use the mailbox client provided by the HSP driver and build an IPC protocol on top of this synchronization mechanism. Based on work by Joseph Lo <josephl@nvidia.com>. Acked-by: Jassi Brar <jaswinder.singh@linaro.org> Signed-off-by: Thierry Reding <treding@nvidia.com>
156 lines
5.2 KiB
Plaintext
156 lines
5.2 KiB
Plaintext
menuconfig MAILBOX
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bool "Mailbox Hardware Support"
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help
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Mailbox is a framework to control hardware communication between
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on-chip processors through queued messages and interrupt driven
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signals. Say Y if your platform supports hardware mailboxes.
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if MAILBOX
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config ARM_MHU
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tristate "ARM MHU Mailbox"
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depends on ARM_AMBA
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help
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Say Y here if you want to build the ARM MHU controller driver.
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The controller has 3 mailbox channels, the last of which can be
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used in Secure mode only.
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config PLATFORM_MHU
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tristate "Platform MHU Mailbox"
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depends on OF
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depends on HAS_IOMEM
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help
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Say Y here if you want to build a platform specific variant MHU
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controller driver.
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The controller has a maximum of 3 mailbox channels, the last of
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which can be used in Secure mode only.
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config PL320_MBOX
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bool "ARM PL320 Mailbox"
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depends on ARM_AMBA
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help
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An implementation of the ARM PL320 Interprocessor Communication
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Mailbox (IPCM), tailored for the Calxeda Highbank. It is used to
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send short messages between Highbank's A9 cores and the EnergyCore
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Management Engine, primarily for cpufreq. Say Y here if you want
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to use the PL320 IPCM support.
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config OMAP2PLUS_MBOX
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tristate "OMAP2+ Mailbox framework support"
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depends on ARCH_OMAP2PLUS
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help
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Mailbox implementation for OMAP family chips with hardware for
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interprocessor communication involving DSP, IVA1.0 and IVA2 in
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OMAP2/3; or IPU, IVA HD and DSP in OMAP4/5. Say Y here if you
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want to use OMAP2+ Mailbox framework support.
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config OMAP_MBOX_KFIFO_SIZE
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int "Mailbox kfifo default buffer size (bytes)"
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depends on OMAP2PLUS_MBOX
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default 256
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help
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Specify the default size of mailbox's kfifo buffers (bytes).
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This can also be changed at runtime (via the mbox_kfifo_size
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module parameter).
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config ROCKCHIP_MBOX
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bool "Rockchip Soc Intergrated Mailbox Support"
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depends on ARCH_ROCKCHIP || COMPILE_TEST
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help
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This driver provides support for inter-processor communication
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between CPU cores and MCU processor on Some Rockchip SOCs.
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Please check it that the Soc you use have Mailbox hardware.
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Say Y here if you want to use the Rockchip Mailbox support.
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config PCC
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bool "Platform Communication Channel Driver"
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depends on ACPI
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default n
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help
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ACPI 5.0+ spec defines a generic mode of communication
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between the OS and a platform such as the BMC. This medium
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(PCC) is typically used by CPPC (ACPI CPU Performance management),
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RAS (ACPI reliability protocol) and MPST (ACPI Memory power
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states). Select this driver if your platform implements the
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PCC clients mentioned above.
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config ALTERA_MBOX
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tristate "Altera Mailbox"
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depends on HAS_IOMEM
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help
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An implementation of the Altera Mailbox soft core. It is used
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to send message between processors. Say Y here if you want to use the
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Altera mailbox support.
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config BCM2835_MBOX
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tristate "BCM2835 Mailbox"
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depends on ARCH_BCM2835
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help
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An implementation of the BCM2385 Mailbox. It is used to invoke
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the services of the Videocore. Say Y here if you want to use the
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BCM2835 Mailbox.
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config STI_MBOX
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tristate "STI Mailbox framework support"
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depends on ARCH_STI && OF
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help
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Mailbox implementation for STMicroelectonics family chips with
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hardware for interprocessor communication.
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config TI_MESSAGE_MANAGER
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tristate "Texas Instruments Message Manager Driver"
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depends on ARCH_KEYSTONE
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help
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An implementation of Message Manager slave driver for Keystone
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architecture SoCs from Texas Instruments. Message Manager is a
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communication entity found on few of Texas Instrument's keystone
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architecture SoCs. These may be used for communication between
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multiple processors within the SoC. Select this driver if your
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platform has support for the hardware block.
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config HI6220_MBOX
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tristate "Hi6220 Mailbox"
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depends on ARCH_HISI
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help
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An implementation of the hi6220 mailbox. It is used to send message
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between application processors and MCU. Say Y here if you want to
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build Hi6220 mailbox controller driver.
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config MAILBOX_TEST
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tristate "Mailbox Test Client"
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depends on OF
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depends on HAS_IOMEM
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help
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Test client to help with testing new Controller driver
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implementations.
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config TEGRA_HSP_MBOX
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bool "Tegra HSP (Hardware Synchronization Primitives) Driver"
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depends on ARCH_TEGRA_186_SOC
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help
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The Tegra HSP driver is used for the interprocessor communication
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between different remote processors and host processors on Tegra186
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and later SoCs. Say Y here if you want to have this support.
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If unsure say N.
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config XGENE_SLIMPRO_MBOX
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tristate "APM SoC X-Gene SLIMpro Mailbox Controller"
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depends on ARCH_XGENE
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help
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An implementation of the APM X-Gene Interprocessor Communication
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Mailbox (IPCM) between the ARM 64-bit cores and SLIMpro controller.
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It is used to send short messages between ARM64-bit cores and
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the SLIMpro Management Engine, primarily for PM. Say Y here if you
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want to use the APM X-Gene SLIMpro IPCM support.
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config BCM_PDC_MBOX
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tristate "Broadcom PDC Mailbox"
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depends on ARM64 || COMPILE_TEST
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depends on HAS_DMA
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default ARCH_BCM_IPROC
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help
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Mailbox implementation for the Broadcom PDC ring manager,
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which provides access to various offload engines on Broadcom
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SoCs. Say Y here if you want to use the Broadcom PDC.
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endif
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