2018-06-30 03:53:24 +03:00
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Header file for FPGA Management Engine ( FME ) Driver
*
* Copyright ( C ) 2017 - 2018 Intel Corporation , Inc .
*
* Authors :
* Kang Luwei < luwei . kang @ intel . com >
* Xiao Guangrong < guangrong . xiao @ linux . intel . com >
* Wu Hao < hao . wu @ intel . com >
* Joseph Grecco < joe . grecco @ intel . com >
* Enno Luebbers < enno . luebbers @ intel . com >
* Tim Whisonant < tim . whisonant @ intel . com >
* Ananda Ravuri < ananda . ravuri @ intel . com >
* Henry Mitchel < henry . mitchel @ intel . com >
*/
# ifndef __DFL_FME_H
# define __DFL_FME_H
/**
* struct dfl_fme - dfl fme private data
*
* @ mgr : FME ' s FPGA manager platform device .
* @ region_list : linked list of FME ' s FPGA regions .
* @ bridge_list : linked list of FME ' s FPGA bridges .
* @ pdata : fme platform device ' s pdata .
*/
struct dfl_fme {
struct platform_device * mgr ;
struct list_head region_list ;
struct list_head bridge_list ;
struct dfl_feature_platform_data * pdata ;
} ;
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extern const struct dfl_feature_ops fme_pr_mgmt_ops ;
extern const struct dfl_feature_id fme_pr_mgmt_id_table [ ] ;
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extern const struct dfl_feature_ops fme_global_err_ops ;
extern const struct dfl_feature_id fme_global_err_id_table [ ] ;
extern const struct attribute_group fme_global_err_group ;
fpga: dfl: fme: add performance reporting support
This patch adds support for performance reporting private feature
for FPGA Management Engine (FME). Now it supports several different
performance counters, including 'basic', 'cache', 'fabric', 'vtd'
and 'vtd_sip'. It allows user to use standard linux tools to access
these performance counters.
e.g. List all events by "perf list"
perf list | grep fme
dfl_fme0/cache_read_hit/ [Kernel PMU event]
dfl_fme0/cache_read_miss/ [Kernel PMU event]
...
dfl_fme0/fab_mmio_read/ [Kernel PMU event]
dfl_fme0/fab_mmio_write/ [Kernel PMU event]
...
dfl_fme0/fab_port_mmio_read,portid=?/ [Kernel PMU event]
dfl_fme0/fab_port_mmio_write,portid=?/ [Kernel PMU event]
...
dfl_fme0/vtd_port_devtlb_1g_fill,portid=?/ [Kernel PMU event]
dfl_fme0/vtd_port_devtlb_2m_fill,portid=?/ [Kernel PMU event]
...
dfl_fme0/vtd_sip_iotlb_1g_hit/ [Kernel PMU event]
dfl_fme0/vtd_sip_iotlb_1g_miss/ [Kernel PMU event]
...
dfl_fme0/clock [Kernel PMU event]
...
e.g. check increased counter value after run one application using
"perf stat" command.
perf stat -e dfl_fme0/fab_mmio_read/,dfl_fme0/fab_mmio_write/ ./test
Performance counter stats for './test':
1 dfl_fme0/fab_mmio_read/
2 dfl_fme0/fab_mmio_write/
1.009496520 seconds time elapsed
Please note that fabric counters support both fab_* and fab_port_*, but
actually they are sharing one set of performance counters in hardware.
If user wants to monitor overall data events on fab_* then fab_port_*
can't be supported at the same time, see example below:
perf stat -e dfl_fme0/fab_mmio_read/,dfl_fme0/fab_port_mmio_write,portid=0/
Performance counter stats for 'system wide':
0 dfl_fme0/fab_mmio_read/
<not supported> dfl_fme0/fab_port_mmio_write,portid=0/
2.141064085 seconds time elapsed
Signed-off-by: Luwei Kang <luwei.kang@intel.com>
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Signed-off-by: Wu Hao <hao.wu@intel.com>
Link: https://lore.kernel.org/r/1587949583-12058-3-git-send-email-hao.wu@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-27 04:06:23 +03:00
extern const struct dfl_feature_ops fme_perf_ops ;
extern const struct dfl_feature_id fme_perf_id_table [ ] ;
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# endif /* __DFL_FME_H */
