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feat: return physical address base of memory range #322

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1 change: 1 addition & 0 deletions include/gdrapi.h
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Original file line number Diff line number Diff line change
Expand Up @@ -131,6 +131,7 @@ typedef struct gdr_info_v2 {
unsigned mapped:1;
unsigned wc_mapping:1;
gdr_mapping_type_t mapping_type;
uint64_t paddr;
} gdr_info_v2_t;
typedef gdr_info_v2_t gdr_info_t;
int gdr_get_info_v2(gdr_t g, gdr_mh_t handle, gdr_info_v2_t *info);
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4 changes: 4 additions & 0 deletions src/gdrapi.c
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Original file line number Diff line number Diff line change
Expand Up @@ -379,6 +379,7 @@ int gdr_get_info_v2(gdr_t g, gdr_mh_t handle, gdr_info_v2_t *info)
info->mapped = gdr_is_mapped(params.mapping_type);
info->wc_mapping = (params.mapping_type == GDR_MAPPING_TYPE_WC);
info->mapping_type = params.mapping_type;
info->paddr = params.paddr;
}
}
else
Expand All @@ -400,6 +401,7 @@ int gdr_get_info_v2(gdr_t g, gdr_mh_t handle, gdr_info_v2_t *info)
info->mapped = params.mapped;
info->wc_mapping = params.wc_mapping;
info->mapping_type = params.mapped ? (params.wc_mapping ? GDR_MAPPING_TYPE_WC : GDR_MAPPING_TYPE_CACHING) : GDR_MAPPING_TYPE_NONE;
info->paddr = params.paddr;
}
}

Expand Down Expand Up @@ -1040,6 +1042,7 @@ typedef struct gdr_info_v1 {
uint32_t cycles_per_ms;
unsigned mapped:1;
unsigned wc_mapping:1;
uint64_t paddr;
} gdr_info_v1_t;

int gdr_get_info(gdr_t g, gdr_mh_t handle, gdr_info_v1_t *info)
Expand All @@ -1064,6 +1067,7 @@ int gdr_get_info(gdr_t g, gdr_mh_t handle, gdr_info_v1_t *info)
info->cycles_per_ms = params.tsc_khz;
info->mapped = params.mapped;
info->wc_mapping = params.wc_mapping;
info->paddr = params.paddr;
}

out:
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2 changes: 2 additions & 0 deletions src/gdrdrv/gdrdrv.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1145,6 +1145,7 @@ static int gdrdrv_get_info(gdr_info_t *info, void __user *_params)
params.tsc_khz = mr->tsc_khz;
params.mapped = gdr_mr_is_mapped(mr);
params.wc_mapping = (mr->cpu_mapping_type == GDR_MR_WC);
params.paddr = mr->page_table->pages[0]->physical_address;

gdr_put_mr_read(mr);

Expand Down Expand Up @@ -1183,6 +1184,7 @@ static int gdrdrv_get_info_v2(gdr_info_t *info, void __user *_params)
params.tm_cycles = mr->tm_cycles;
params.tsc_khz = mr->tsc_khz;
params.mapping_type = mr->cpu_mapping_type;
params.paddr = mr->page_table->pages[0]->physical_address;

gdr_put_mr_read(mr);

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2 changes: 2 additions & 0 deletions src/gdrdrv/gdrdrv.h
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Original file line number Diff line number Diff line change
Expand Up @@ -109,6 +109,7 @@ struct GDRDRV_IOC_GET_INFO_PARAMS
__u64 tm_cycles;
__u32 mapped;
__u32 wc_mapping;
__u64 paddr;
};

#define GDRDRV_IOC_GET_INFO _IOWR(GDRDRV_IOCTL, 4, struct GDRDRV_IOC_GET_INFO_PARAMS *)
Expand All @@ -126,6 +127,7 @@ struct GDRDRV_IOC_GET_INFO_V2_PARAMS
__u32 tsc_khz;
__u64 tm_cycles;
__u32 mapping_type;
__u64 paddr;
};

#define GDRDRV_IOC_GET_INFO_V2 _IOWR(GDRDRV_IOCTL, 5, struct GDRDRV_IOC_GET_INFO_V2_PARAMS *)
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