From c9d9825bea486d4490a02ce2c5672c5a16891fab Mon Sep 17 00:00:00 2001 From: Nipun Gupta Date: Tue, 5 Nov 2019 19:53:15 +0530 Subject: [PATCH] common/dpaax: fallback to check separate memory node for VM In Virtual Machine the memory node in the device tree is at '/proc/device-tree/memory/reg' which is separate from the memory node path on the host. This patch enables check on both the paths. Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table") Cc: stable@dpdk.org Signed-off-by: Nipun Gupta --- drivers/common/dpaax/dpaax_iova_table.c | 7 +++++-- drivers/common/dpaax/dpaax_iova_table.h | 2 ++ 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/common/dpaax/dpaax_iova_table.c b/drivers/common/dpaax/dpaax_iova_table.c index 43c9c72e68..98b076e09f 100644 --- a/drivers/common/dpaax/dpaax_iova_table.c +++ b/drivers/common/dpaax/dpaax_iova_table.c @@ -68,9 +68,12 @@ read_memory_node(unsigned int *count) *count = 0; ret = glob(MEM_NODE_PATH_GLOB, 0, NULL, &result); + if (ret != 0) + ret = glob(MEM_NODE_PATH_GLOB_VM, 0, NULL, &result); + if (ret != 0) { - DPAAX_DEBUG("Unable to glob device-tree memory node: (%s)(%d)", - MEM_NODE_PATH_GLOB, ret); + DPAAX_DEBUG("Unable to glob device-tree memory node (err: %d)", + ret); goto out; } diff --git a/drivers/common/dpaax/dpaax_iova_table.h b/drivers/common/dpaax/dpaax_iova_table.h index 138827e7b9..fef97f6dde 100644 --- a/drivers/common/dpaax/dpaax_iova_table.h +++ b/drivers/common/dpaax/dpaax_iova_table.h @@ -45,6 +45,8 @@ extern struct dpaax_iova_table *dpaax_iova_table_p; * is SoC dependent, or even Uboot fixup dependent. */ #define MEM_NODE_PATH_GLOB "/proc/device-tree/memory[@0-9]*/reg" +/* For Virtual Machines memory node is at different path (below) */ +#define MEM_NODE_PATH_GLOB_VM "/proc/device-tree/memory/reg" /* Device file should be multiple of 16 bytes, each containing 8 byte of addr * and its length. Assuming max of 5 entries. */ -- 2.20.1