From 418f31cd91a5c3ca45f0920ed64205def49c8a80 Mon Sep 17 00:00:00 2001
From: Alex Waterman <alexw@nvidia.com>
Date: Tue, 6 Mar 2018 10:43:16 -0800
Subject: gpu: nvgpu: Enable IO coherency on GV100

This reverts commit 848af2ce6de6140323a6ffe3075bf8021e119434.

This is a revert of a revert, etc, etc. It re-enables IO coherence again.

JIRA EVLR-2333

Change-Id: Ibf97dce2f892e48a1200a06cd38a1c5d9603be04
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1669722
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
---
 drivers/gpu/nvgpu/common/linux/pci.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

(limited to 'drivers/gpu/nvgpu/common/linux/pci.c')

diff --git a/drivers/gpu/nvgpu/common/linux/pci.c b/drivers/gpu/nvgpu/common/linux/pci.c
index 6ebe8dda..973da9ca 100644
--- a/drivers/gpu/nvgpu/common/linux/pci.c
+++ b/drivers/gpu/nvgpu/common/linux/pci.c
@@ -17,13 +17,13 @@
 #include <linux/pci.h>
 #include <linux/interrupt.h>
 #include <linux/pm_runtime.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
 
 #include <nvgpu/nvgpu_common.h>
 #include <nvgpu/kmem.h>
 #include <nvgpu/enabled.h>
 #include <nvgpu/nvlink.h>
-#include <linux/of_platform.h>
-#include <linux/of_address.h>
 
 #include "gk20a/gk20a.h"
 #include "clk/clk.h"
@@ -566,6 +566,12 @@ static int nvgpu_pci_probe(struct pci_dev *pdev,
 	platform->g = g;
 	l->dev = &pdev->dev;
 
+	np = nvgpu_get_node(g);
+	if (of_dma_is_coherent(np)) {
+		__nvgpu_set_enabled(g, NVGPU_USE_COHERENT_SYSMEM, true);
+		__nvgpu_set_enabled(g, NVGPU_SUPPORT_IO_COHERENCE, true);
+	}
+
 	err = pci_enable_device(pdev);
 	if (err)
 		return err;
@@ -644,13 +650,6 @@ static int nvgpu_pci_probe(struct pci_dev *pdev,
 
 	g->mm.has_physical_mode = false;
 
-	np = nvgpu_get_node(g);
-
-	if (of_dma_is_coherent(np)) {
-		__nvgpu_set_enabled(g, NVGPU_DMA_COHERENT, true);
-		__nvgpu_set_enabled(g, NVGPU_SUPPORT_IO_COHERENCE, true);
-	}
-
 	return 0;
 }
 
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