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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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9b08ae2219
We trace the whole TFD with all TBs when in iwlwifi_dev_tx, but sometimes we add TBs to it later and then we don't have any of this data. Trace the I/O virtual address (IOVA) (it can be the physical address, or as returned by the IOMMU) here to aid debugging the DMA flows. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/******************************************************************************
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*
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* Copyright(c) 2009 - 2014 Intel Corporation. All rights reserved.
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* Copyright(c) 2015 Intel Deutschland GmbH
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* Copyright(c) 2018 - 2019 Intel Corporation
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*
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* Contact Information:
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* Intel Linux Wireless <linuxwifi@intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*****************************************************************************/
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#if !defined(__IWLWIFI_DEVICE_TRACE_DATA) || defined(TRACE_HEADER_MULTI_READ)
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#define __IWLWIFI_DEVICE_TRACE_DATA
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#include <linux/tracepoint.h>
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM iwlwifi_data
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TRACE_EVENT(iwlwifi_dev_tx_tb,
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TP_PROTO(const struct device *dev, struct sk_buff *skb,
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u8 *data_src, dma_addr_t phys, size_t data_len),
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TP_ARGS(dev, skb, data_src, phys, data_len),
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TP_STRUCT__entry(
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DEV_ENTRY
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__field(u64, phys)
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__dynamic_array(u8, data,
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iwl_trace_data(skb) ? data_len : 0)
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),
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TP_fast_assign(
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DEV_ASSIGN;
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__entry->phys = phys;
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if (iwl_trace_data(skb))
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memcpy(__get_dynamic_array(data), data_src, data_len);
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),
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TP_printk("[%s] TX frame data", __get_str(dev))
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);
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TRACE_EVENT(iwlwifi_dev_rx_data,
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TP_PROTO(const struct device *dev,
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const struct iwl_trans *trans,
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void *rxbuf, size_t len),
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TP_ARGS(dev, trans, rxbuf, len),
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TP_STRUCT__entry(
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DEV_ENTRY
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__dynamic_array(u8, data,
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len - iwl_rx_trace_len(trans, rxbuf, len, NULL))
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),
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TP_fast_assign(
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size_t offs = iwl_rx_trace_len(trans, rxbuf, len, NULL);
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DEV_ASSIGN;
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if (offs < len)
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memcpy(__get_dynamic_array(data),
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((u8 *)rxbuf) + offs, len - offs);
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),
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TP_printk("[%s] RX frame data", __get_str(dev))
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);
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#endif /* __IWLWIFI_DEVICE_TRACE_DATA */
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#undef TRACE_INCLUDE_FILE
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#define TRACE_INCLUDE_FILE iwl-devtrace-data
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#include <trace/define_trace.h>
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