From 16e0aeeed527f8452e336685f664d7aa848702d3 Mon Sep 17 00:00:00 2001 From: "Suren A. Chilingaryan" Date: Thu, 19 May 2016 19:48:24 +0200 Subject: First test --- gdrcopy.diff | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 gdrcopy.diff (limited to 'gdrcopy.diff') diff --git a/gdrcopy.diff b/gdrcopy.diff new file mode 100644 index 0000000..c7043c7 --- /dev/null +++ b/gdrcopy.diff @@ -0,0 +1,57 @@ +diff --git a/gdrapi.c b/gdrapi.c +index e38fb8a..c9faeb5 100644 +--- a/gdrapi.c ++++ b/gdrapi.c +@@ -218,6 +218,7 @@ int gdr_get_info(gdr_t g, gdr_mh_t handle, gdr_info_t *info) + info->page_size = params.page_size; + info->tm_cycles = params.tm_cycles; + info->cycles_per_ms = params.tsc_khz; ++ info->bus_addr = params.bus_addr; + } + return ret; + } +diff --git a/gdrapi.h b/gdrapi.h +index da02719..006f7f0 100644 +--- a/gdrapi.h ++++ b/gdrapi.h +@@ -89,6 +89,7 @@ struct gdr_info { + uint32_t page_size; + uint64_t tm_cycles; + uint32_t cycles_per_ms; ++ uint64_t bus_addr; + }; + typedef struct gdr_info gdr_info_t; + int gdr_get_info(gdr_t g, gdr_mh_t handle, gdr_info_t *info); +diff --git a/gdrdrv/gdrdrv.c b/gdrdrv/gdrdrv.c +index 8363051..8e78441 100644 +--- a/gdrdrv/gdrdrv.c ++++ b/gdrdrv/gdrdrv.c +@@ -443,11 +443,16 @@ static int gdrdrv_get_info(gdr_info_t *info, void __user *_params) + return -EINVAL; + } + ++ struct nvidia_p2p_page *page = mr->page_table->pages[0]; ++ unsigned long page_paddr = page->physical_address; ++ unsigned long paddr = page_paddr + mr->offset; ++ + params.va = mr->va; + params.mapped_size = mr->mapped_size; + params.page_size = mr->page_size; + params.tm_cycles = mr->tm_cycles; + params.tsc_khz = mr->tsc_khz; ++ params.bus_addr = paddr; + + if (copy_to_user(_params, ¶ms, sizeof(params))) { + gdr_err("copy_to_user failed on user pointer %p\n", _params); +diff --git a/gdrdrv/gdrdrv.h b/gdrdrv/gdrdrv.h +index 672a203..e1fd2a5 100644 +--- a/gdrdrv/gdrdrv.h ++++ b/gdrdrv/gdrdrv.h +@@ -77,6 +77,7 @@ struct GDRDRV_IOC_GET_INFO_PARAMS + __u32 page_size; + __u32 tsc_khz; + __u64 tm_cycles; ++ __u64 bus_addr; + }; + + #define GDRDRV_IOC_GET_INFO _IOWR(GDRDRV_IOCTL, 4, struct GDRDRV_IOC_GET_INFO_PARAMS *) -- cgit v1.2.3