forked from Minki/linux
a6bed7a541
Introduce a tool to test NTB MSI interrupts similar to the other NTB test tools. This tool creates a debugfs directory for each NTB device with the following files: port irqX_occurrences peerX/port peerX/count peerX/trigger The 'port' file tells the user the local port number and the 'occurrences' files tell the number of local interrupts that have been received for each interrupt. For each peer, the 'port' file and the 'count' file tell you the peer's port number and number of interrupts respectively. Writing the interrupt number to the 'trigger' file triggers the interrupt handler for the peer which should increment their corresponding 'occurrences' file. The 'ready' file indicates if a peer is ready, writing to this file blocks until it is ready. The module parameter num_irqs can be used to set the number of local interrupts. By default this is 4. This is only limited by the number of unused MSI interrupts registered by the hardware (this will require support of the hardware driver) and there must be at least 2*num_irqs + 1 spads registers available. Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Allen Hubbe <allenbh@gmail.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
37 lines
1.1 KiB
Plaintext
37 lines
1.1 KiB
Plaintext
config NTB_PINGPONG
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tristate "NTB Ping Pong Test Client"
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help
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This is a simple ping pong driver that exercises the scratchpads and
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doorbells of the ntb hardware. This driver may be used to test that
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your ntb hardware and drivers are functioning at a basic level.
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If unsure, say N.
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config NTB_TOOL
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tristate "NTB Debugging Tool Test Client"
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help
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This is a simple debugging driver that enables the doorbell and
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scratchpad registers to be read and written from the debugfs. This
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enables more complicated debugging to be scripted from user space.
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This driver may be used to test that your ntb hardware and drivers are
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functioning at a basic level.
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If unsure, say N.
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config NTB_PERF
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tristate "NTB RAW Perf Measuring Tool"
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help
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This is a tool to measure raw NTB performance by transferring data
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to and from the window without additional software interaction.
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If unsure, say N.
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config NTB_MSI_TEST
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tristate "NTB MSI Test Client"
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depends on NTB_MSI
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help
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This tool demonstrates the use of the NTB MSI library to
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send MSI interrupts between peers.
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If unsure, say N.
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