[PATCH] drm/ttm: Add DMA map/unmap tracepoint (v3)
Tom St Denis
tom.stdenis at amd.com
Fri Aug 18 22:36:27 UTC 2017
Hi Christian,
Should I wait for comments on dri-devel or can I push the TTM trace
patches to our stg-4.12 already?
Cheers,
Tom
On 18/08/17 09:45 AM, Christian König wrote:
> Am 18.08.2017 um 15:22 schrieb Tom St Denis:
>> Also exports two functions that vendor drivers can call
>> to trace DMA mappings. This is meant to help translate
>> IOMMU mappings of bus addresses back to physical pages.
>>
>> Used by the umr amdgpu debugger for instance.
>>
>> Signed-off-by: Tom St Denis <tom.stdenis at amd.com>
>
> Reviewed-by: Christian König <christian.koenig at amd.com>.
>
> Since it is TTM you need to send it to the drm mailing list as well.
>
> Christian.
>
>>
>> (v2): Use dev_name() to get PCI path instead.
>> (v3): Use correct types for dma/phys addresses
>> ---
>> drivers/gpu/drm/ttm/Makefile | 4 +-
>> drivers/gpu/drm/ttm/ttm_debug.c | 75
>> ++++++++++++++++++++++++++++++
>> drivers/gpu/drm/ttm/ttm_trace.h | 87
>> +++++++++++++++++++++++++++++++++++
>> drivers/gpu/drm/ttm/ttm_tracepoints.c | 46 ++++++++++++++++++
>> include/drm/ttm/ttm_debug.h | 31 +++++++++++++
>> 5 files changed, 241 insertions(+), 2 deletions(-)
>> create mode 100644 drivers/gpu/drm/ttm/ttm_debug.c
>> create mode 100644 drivers/gpu/drm/ttm/ttm_trace.h
>> create mode 100644 drivers/gpu/drm/ttm/ttm_tracepoints.c
>> create mode 100644 include/drm/ttm/ttm_debug.h
>>
>> diff --git a/drivers/gpu/drm/ttm/Makefile b/drivers/gpu/drm/ttm/Makefile
>> index f92325800f8a..fd3da00c0bf2 100644
>> --- a/drivers/gpu/drm/ttm/Makefile
>> +++ b/drivers/gpu/drm/ttm/Makefile
>> @@ -1,11 +1,11 @@
>> #
>> # Makefile for the drm device driver. This driver provides support
>> for the
>> -ccflags-y := -Iinclude/drm
>> +ccflags-y := -Iinclude/drm -I$(src)/.
>> ttm-y := ttm_memory.o ttm_tt.o ttm_bo.o \
>> ttm_bo_util.o ttm_bo_vm.o ttm_module.o \
>> ttm_object.o ttm_lock.o ttm_execbuf_util.o ttm_page_alloc.o \
>> - ttm_bo_manager.o ttm_page_alloc_dma.o
>> + ttm_bo_manager.o ttm_page_alloc_dma.o ttm_debug.o ttm_tracepoints.o
>> ttm-$(CONFIG_AGP) += ttm_agp_backend.o
>> obj-$(CONFIG_DRM_TTM) += ttm.o
>> diff --git a/drivers/gpu/drm/ttm/ttm_debug.c
>> b/drivers/gpu/drm/ttm/ttm_debug.c
>> new file mode 100644
>> index 000000000000..dd158c6ef90d
>> --- /dev/null
>> +++ b/drivers/gpu/drm/ttm/ttm_debug.c
>> @@ -0,0 +1,75 @@
>> +/**************************************************************************
>>
>> + *
>> + * Copyright (c) 2017 Advanced Micro Devices, Inc.
>> + * All Rights Reserved.
>> + *
>> + * Permission is hereby granted, free of charge, to any person
>> obtaining a
>> + * copy of this software and associated documentation files (the
>> + * "Software"), to deal in the Software without restriction, including
>> + * without limitation the rights to use, copy, modify, merge, publish,
>> + * distribute, sub license, and/or sell copies of the Software, and to
>> + * permit persons to whom the Software is furnished to do so, subject to
>> + * the following conditions:
>> + *
>> + * The above copyright notice and this permission notice (including the
>> + * next paragraph) shall be included in all copies or substantial
>> portions
>> + * of the Software.
>> + *
>> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
>> EXPRESS OR
>> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
>> MERCHANTABILITY,
>> + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT
>> SHALL
>> + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
>> ANY CLAIM,
>> + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
>> + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
>> OR THE
>> + * USE OR OTHER DEALINGS IN THE SOFTWARE.
>> + *
>> +
>> **************************************************************************/
>>
>> +/*
>> + * Authors: Tom St Denis <tom.stdenis at amd.com>
>> + */
>> +#include <linux/sched.h>
>> +#include <linux/highmem.h>
>> +#include <linux/pagemap.h>
>> +#include <linux/shmem_fs.h>
>> +#include <linux/file.h>
>> +#include <linux/swap.h>
>> +#include <linux/slab.h>
>> +#include <linux/export.h>
>> +#include <drm/drm_cache.h>
>> +#include <drm/drm_mem_util.h>
>> +#include <drm/ttm/ttm_module.h>
>> +#include <drm/ttm/ttm_bo_driver.h>
>> +#include <drm/ttm/ttm_placement.h>
>> +#include <drm/ttm/ttm_page_alloc.h>
>> +#include "ttm_trace.h"
>> +
>> +void ttm_trace_dma_map(struct device *dev, struct ttm_dma_tt *tt)
>> +{
>> + unsigned i;
>> +
>> + if (unlikely(trace_ttm_dma_map_enabled())) {
>> + for (i = 0; i < tt->ttm.num_pages; i++) {
>> + trace_ttm_dma_map(
>> + dev,
>> + tt->ttm.pages[i],
>> + tt->dma_address[i]);
>> + }
>> + }
>> +}
>> +EXPORT_SYMBOL(ttm_trace_dma_map);
>> +
>> +void ttm_trace_dma_unmap(struct device *dev, struct ttm_dma_tt *tt)
>> +{
>> + unsigned i;
>> +
>> + if (unlikely(trace_ttm_dma_unmap_enabled())) {
>> + for (i = 0; i < tt->ttm.num_pages; i++) {
>> + trace_ttm_dma_unmap(
>> + dev,
>> + tt->ttm.pages[i],
>> + tt->dma_address[i]);
>> + }
>> + }
>> +}
>> +EXPORT_SYMBOL(ttm_trace_dma_unmap);
>> +
>> diff --git a/drivers/gpu/drm/ttm/ttm_trace.h
>> b/drivers/gpu/drm/ttm/ttm_trace.h
>> new file mode 100644
>> index 000000000000..23279b9b8e64
>> --- /dev/null
>> +++ b/drivers/gpu/drm/ttm/ttm_trace.h
>> @@ -0,0 +1,87 @@
>> +/**************************************************************************
>>
>> + *
>> + * Copyright (c) 2017 Advanced Micro Devices, Inc.
>> + * All Rights Reserved.
>> + *
>> + * Permission is hereby granted, free of charge, to any person
>> obtaining a
>> + * copy of this software and associated documentation files (the
>> + * "Software"), to deal in the Software without restriction, including
>> + * without limitation the rights to use, copy, modify, merge, publish,
>> + * distribute, sub license, and/or sell copies of the Software, and to
>> + * permit persons to whom the Software is furnished to do so, subject to
>> + * the following conditions:
>> + *
>> + * The above copyright notice and this permission notice (including the
>> + * next paragraph) shall be included in all copies or substantial
>> portions
>> + * of the Software.
>> + *
>> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
>> EXPRESS OR
>> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
>> MERCHANTABILITY,
>> + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT
>> SHALL
>> + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
>> ANY CLAIM,
>> + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
>> + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
>> OR THE
>> + * USE OR OTHER DEALINGS IN THE SOFTWARE.
>> + *
>> +
>> **************************************************************************/
>>
>> +/*
>> + * Authors: Tom St Denis <tom.stdenis at amd.com>
>> + */
>> +#if !defined(_TTM_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
>> +#define _TTM_TRACE_H_
>> +
>> +#include <linux/stringify.h>
>> +#include <linux/types.h>
>> +#include <linux/tracepoint.h>
>> +
>> +#include <drm/drmP.h>
>> +
>> +#undef TRACE_SYSTEM
>> +#define TRACE_SYSTEM ttm
>> +#define TRACE_INCLUDE_FILE ttm_trace
>> +
>> +TRACE_EVENT(ttm_dma_map,
>> + TP_PROTO(struct device *dev, struct page *page, dma_addr_t
>> dma_address),
>> + TP_ARGS(dev, page, dma_address),
>> + TP_STRUCT__entry(
>> + __string(device, dev_name(dev))
>> + __field(dma_addr_t, dma)
>> + __field(phys_addr_t, phys)
>> + ),
>> + TP_fast_assign(
>> + __assign_str(device, dev_name(dev));
>> + __entry->dma = dma_address;
>> + __entry->phys = page_to_phys(page);
>> + ),
>> + TP_printk("%s: %pad => %pa",
>> + __get_str(device),
>> + &__entry->dma,
>> + &__entry->phys)
>> +);
>> +
>> +TRACE_EVENT(ttm_dma_unmap,
>> + TP_PROTO(struct device *dev, struct page *page, dma_addr_t
>> dma_address),
>> + TP_ARGS(dev, page, dma_address),
>> + TP_STRUCT__entry(
>> + __string(device, dev_name(dev))
>> + __field(dma_addr_t, dma)
>> + __field(phys_addr_t, phys)
>> + ),
>> + TP_fast_assign(
>> + __assign_str(device, dev_name(dev));
>> + __entry->dma = dma_address;
>> + __entry->phys = page_to_phys(page);
>> + ),
>> + TP_printk("%s: %pad => %pa",
>> + __get_str(device),
>> + &__entry->dma,
>> + &__entry->phys)
>> +);
>> +
>> +#endif
>> +
>> +/* This part must be outside protection */
>> +#undef TRACE_INCLUDE_PATH
>> +#define TRACE_INCLUDE_PATH .
>> +#include <trace/define_trace.h>
>> +
>> diff --git a/drivers/gpu/drm/ttm/ttm_tracepoints.c
>> b/drivers/gpu/drm/ttm/ttm_tracepoints.c
>> new file mode 100644
>> index 000000000000..c13b9f5b6496
>> --- /dev/null
>> +++ b/drivers/gpu/drm/ttm/ttm_tracepoints.c
>> @@ -0,0 +1,46 @@
>> +/**************************************************************************
>>
>> + *
>> + * Copyright (c) 2017 Advanced Micro Devices, Inc.
>> + * All Rights Reserved.
>> + *
>> + * Permission is hereby granted, free of charge, to any person
>> obtaining a
>> + * copy of this software and associated documentation files (the
>> + * "Software"), to deal in the Software without restriction, including
>> + * without limitation the rights to use, copy, modify, merge, publish,
>> + * distribute, sub license, and/or sell copies of the Software, and to
>> + * permit persons to whom the Software is furnished to do so, subject to
>> + * the following conditions:
>> + *
>> + * The above copyright notice and this permission notice (including the
>> + * next paragraph) shall be included in all copies or substantial
>> portions
>> + * of the Software.
>> + *
>> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
>> EXPRESS OR
>> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
>> MERCHANTABILITY,
>> + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT
>> SHALL
>> + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
>> ANY CLAIM,
>> + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
>> + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
>> OR THE
>> + * USE OR OTHER DEALINGS IN THE SOFTWARE.
>> + *
>> +
>> **************************************************************************/
>>
>> +/*
>> + * Authors: Tom St Denis <tom.stdenis at amd.com>
>> + */
>> +#include <linux/sched.h>
>> +#include <linux/highmem.h>
>> +#include <linux/pagemap.h>
>> +#include <linux/shmem_fs.h>
>> +#include <linux/file.h>
>> +#include <linux/swap.h>
>> +#include <linux/slab.h>
>> +#include <linux/export.h>
>> +#include <drm/drm_cache.h>
>> +#include <drm/drm_mem_util.h>
>> +#include <drm/ttm/ttm_module.h>
>> +#include <drm/ttm/ttm_bo_driver.h>
>> +#include <drm/ttm/ttm_placement.h>
>> +#include <drm/ttm/ttm_page_alloc.h>
>> +
>> +#define CREATE_TRACE_POINTS
>> +#include "ttm_trace.h"
>> diff --git a/include/drm/ttm/ttm_debug.h b/include/drm/ttm/ttm_debug.h
>> new file mode 100644
>> index 000000000000..b5e460fa5086
>> --- /dev/null
>> +++ b/include/drm/ttm/ttm_debug.h
>> @@ -0,0 +1,31 @@
>> +/**************************************************************************
>>
>> + *
>> + * Copyright (c) 2017 Advanced Micro Devices, Inc.
>> + * All Rights Reserved.
>> + *
>> + * Permission is hereby granted, free of charge, to any person
>> obtaining a
>> + * copy of this software and associated documentation files (the
>> + * "Software"), to deal in the Software without restriction, including
>> + * without limitation the rights to use, copy, modify, merge, publish,
>> + * distribute, sub license, and/or sell copies of the Software, and to
>> + * permit persons to whom the Software is furnished to do so, subject to
>> + * the following conditions:
>> + *
>> + * The above copyright notice and this permission notice (including the
>> + * next paragraph) shall be included in all copies or substantial
>> portions
>> + * of the Software.
>> + *
>> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
>> EXPRESS OR
>> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
>> MERCHANTABILITY,
>> + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT
>> SHALL
>> + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
>> ANY CLAIM,
>> + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
>> + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
>> OR THE
>> + * USE OR OTHER DEALINGS IN THE SOFTWARE.
>> + *
>> +
>> **************************************************************************/
>>
>> +/*
>> + * Authors: Tom St Denis <tom.stdenis at amd.com>
>> + */
>> +extern void ttm_trace_dma_map(struct device *dev, struct ttm_dma_tt
>> *tt);
>> +extern void ttm_trace_dma_unmap(struct device *dev, struct ttm_dma_tt
>> *tt);
>
>
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