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1d386b48 |
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16-Aug-2023 |
Warner Losh <imp@FreeBSD.org> |
Remove $FreeBSD$: one-line .c pattern Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
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e92a9a8c |
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09-Apr-2019 |
Tycho Nightingale <tychon@FreeBSD.org> |
ioatcontrol(8) crc-copy flag bug and misc usage tweak Reviewed by: cem Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D19855
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a8d9ee9c |
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02-Apr-2019 |
Tycho Nightingale <tychon@FreeBSD.org> |
ioatcontrol(8) could exercise 8k-aligned copy with page-break, crc and crc-copy modes. Reviewed by: cem Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D19780
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1874b317 |
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27-May-2016 |
Enji Cooper <ngie@FreeBSD.org> |
Update usage(..) - Document missing options - Sync options with ioatcontrol(8). - Make it clear that the first 2 parameters are always required. MFC after: 1 week Sponsored by: EMC / Isilon Storage Division
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613fbf2c |
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27-May-2016 |
Enji Cooper <ngie@FreeBSD.org> |
Initialize `t` with memset(.., 0, ..) This will help ensure that we're not using random garbage on the stack by accident with respect to the variable MFC after: 1 week Sponsored by: EMC / Isilon Storage Division
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d37872da |
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14-Dec-2015 |
Conrad Meyer <cem@FreeBSD.org> |
ioatcontrol(8): Add support for interrupt coalescing The new flag, -c <period>, sets the interrupt coalescing period in microseconds through the new ioat(4) API ioat_set_interrupt_coalesce(). Also add a -z flag to zero ioat statistics before tests, to make it easy to measure results. Sponsored by: EMC / Isilon Storage Division
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6a301ac8 |
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09-Dec-2015 |
Conrad Meyer <cem@FreeBSD.org> |
ioat(4): Add ioatcontrol(8) testing for copy_8k Add -E ("Eight k") and -m ("Memcpy") modes to the ioatcontrol(8) tool. Prompted by: rpokala Sponsored by: EMC / Isilon Storage Division
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e9497f9b |
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28-Oct-2015 |
Conrad Meyer <cem@FreeBSD.org> |
ioatcontrol(8): Add and document "raw" testing mode Allows DMA from/to arbitrary KVA or physical address. /dev/ioat_test must be enabled by root and is only R/W root, so this is approximately as dangerous as /dev/mem and /dev/kmem. Sponsored by: EMC / Isilon Storage Division
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2a4fd6b1 |
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26-Oct-2015 |
Conrad Meyer <cem@FreeBSD.org> |
ioat: Add support for Block Fill operations The IOAT hardware supports writing a 64-bit pattern to some destination buffer. The same limitations on buffer length apply as for copy operations. Throughput is a bit higher (probably because fill does not have to spend bandwidth reading from a source in memory). Support for testing Block Fill has been added to ioatcontrol(8) and the ioat_test device. ioatcontrol(8) accepts the '-f' flag, which tests Block Fill. (If the flag is omitted, the tool tests copy by default.) The '-V' flag, in conjunction with '-f', verifies that buffers are filled in the expected pattern. Tested on: Broadwell DE (Xeon D-1500) Sponsored by: EMC / Isilon Storage Division
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7c69db50 |
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21-Oct-2015 |
Conrad Meyer <cem@FreeBSD.org> |
Improve flexibility of ioat_test / ioatcontrol(8) The test logic now preallocates memory before running the test. The buffer size is now configurable. Post-copy verification is configurable. The number of copies to chain into one transaction (one interrupt) is configurable. A 'duration' mode is added, which repeats the test until the duration has elapsed, reporting the B/s and transactions completed. ioatcontrol.8 has been updated to document the new arguments. Initial limits (on this particular Broadwell-DE) (and when the interrupts are working) seem to be: 256 interrupts/sec or ~6 GB/s, whichever limit is more restrictive. Unfortunately, it seems the interrupt-reset handling on Broadwell isn't working as intended. That will be fixed in a later commit. Sponsored by: EMC / Isilon Storage Division
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e25d0a6d |
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24-Aug-2015 |
Conrad Meyer <cem@FreeBSD.org> |
ioatcontrol(8): Fix build Tripped up by the FBSD SVN pre-commit hook! Approved by: markj (mentor) Sponsored by: EMC / Isilon Storage Division
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e974f91c |
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24-Aug-2015 |
Conrad Meyer <cem@FreeBSD.org> |
Import ioat(4) driver I/OAT is also referred to as Crystal Beach DMA and is a Platform Storage Extension (PSE) on some Intel server platforms. This driver currently supports DMA descriptors only and is part of a larger effort to upstream an interconnect between multiple systems using the Non-Transparent Bridge (NTB) PSE. For now, this driver is only built on AMD64 platforms. It may be ported to work on i386 later, if that is desired. The hardware is exclusive to x86. Further documentation on ioat(4), including API documentation and usage, can be found in the new manual page. Bring in a test tool, ioatcontrol(8), in tools/tools/ioat. The test tool is not hooked up to the build and is not intended for end users. Submitted by: jimharris, Carl Delsey <carl.r.delsey@intel.com> Reviewed by: jimharris (reviewed my changes) Approved by: markj (mentor) Relnotes: yes Sponsored by: Intel Sponsored by: EMC / Isilon Storage Division Differential Revision: https://reviews.freebsd.org/D3456
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