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2ec3ba69fa
Rework RapidIO switch drivers to add an option to build them as loadable kernel modules. This patch removes RapidIO-specific vmlinux section and converts switch drivers to be compatible with LDM driver registration method. To simplify registration of device-specific callback routines this patch introduces rio_switch_ops data structure. The sw_sysfs() callback is removed from the list of device-specific operations because under the new structure its functions can be handled by switch driver's probe() and remove() routines. If a specific switch device driver is not loaded the RapidIO subsystem core will use default standard-based operations to configure a switch. Because the current implementation of RapidIO enumeration/discovery method relies on availability of device-specific operations for error management, switch device drivers must be loaded before the RapidIO enumeration/discovery starts. This patch also moves several common routines from enumeration/discovery module into the RapidIO core code to make switch-specific operations accessible to all components of RapidIO subsystem. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Andre van Herk <andre.van.herk@Prodrive.nl> Cc: Micha Nelissen <micha.nelissen@Prodrive.nl> Cc: Stef van Os <stef.van.os@Prodrive.nl> Cc: Jean Delvare <jdelvare@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
75 lines
2.2 KiB
Text
75 lines
2.2 KiB
Text
#
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# RapidIO configuration
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#
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source "drivers/rapidio/devices/Kconfig"
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config RAPIDIO_DISC_TIMEOUT
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int "Discovery timeout duration (seconds)"
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depends on RAPIDIO
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default "30"
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---help---
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Amount of time a discovery node waits for a host to complete
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enumeration before giving up.
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config RAPIDIO_ENABLE_RX_TX_PORTS
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bool "Enable RapidIO Input/Output Ports"
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depends on RAPIDIO
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---help---
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The RapidIO specification describes a Output port transmit
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enable and a Input port receive enable. The recommended state
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for Input ports and Output ports should be disabled. When
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this switch is set the RapidIO subsystem will enable all
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ports for Input/Output direction to allow other traffic
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than Maintenance transfers.
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config RAPIDIO_DMA_ENGINE
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bool "DMA Engine support for RapidIO"
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depends on RAPIDIO
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select DMADEVICES
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select DMA_ENGINE
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help
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Say Y here if you want to use DMA Engine frameork for RapidIO data
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transfers to/from target RIO devices. RapidIO uses NREAD and
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NWRITE (NWRITE_R, SWRITE) requests to transfer data between local
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memory and memory on remote target device. You need a DMA controller
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capable to perform data transfers to/from RapidIO.
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If you are unsure about this, say Y here.
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config RAPIDIO_DEBUG
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bool "RapidIO subsystem debug messages"
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depends on RAPIDIO
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help
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Say Y here if you want the RapidIO subsystem to produce a bunch of
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debug messages to the system log. Select this if you are having a
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problem with the RapidIO subsystem and want to see more of what is
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going on.
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If you are unsure about this, say N here.
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choice
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prompt "Enumeration method"
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depends on RAPIDIO
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default RAPIDIO_ENUM_BASIC
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help
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There are different enumeration and discovery mechanisms offered
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for RapidIO subsystem. You may select single built-in method or
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or any number of methods to be built as modules.
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Selecting a built-in method disables use of loadable methods.
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If unsure, select Basic built-in.
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config RAPIDIO_ENUM_BASIC
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tristate "Basic"
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help
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This option includes basic RapidIO fabric enumeration and discovery
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mechanism similar to one described in RapidIO specification Annex 1.
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endchoice
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menu "RapidIO Switch drivers"
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depends on RAPIDIO
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source "drivers/rapidio/switches/Kconfig"
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endmenu
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