linux-kernel - [PATCH 4/4] NTB: ntb_hw_amd: set peer limit register

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Date:   Fri, 15 Feb 2019 09:21:46 +0000
From:   "Mehta, Sanju" <Sanju.Mehta@....com>
To:     "S-k, Shyam-sundar" <Shyam-sundar.S-k@....com>,
        "jdmason@...zu.us" <jdmason@...zu.us>,
        "dave.jiang@...el.com" <dave.jiang@...el.com>,
        "allenbh@...il.com" <allenbh@...il.com>
CC:     "linux-ntb@...glegroups.com" <linux-ntb@...glegroups.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Mehta, Sanju" <Sanju.Mehta@....com>
Subject: [PATCH 4/4] NTB: ntb_hw_amd: set peer limit register

From: Sanjay R Mehta <sanju.mehta@....com>

As per amd ntb spec it says that peer limit register
must be programmed

Signed-off-by: Sanjay R Mehta <sanju.mehta@....com>
---
 drivers/ntb/hw/amd/ntb_hw_amd.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.c b/drivers/ntb/hw/amd/ntb_hw_amd.c
index efb214f..cd463e1 100644
--- a/drivers/ntb/hw/amd/ntb_hw_amd.c
+++ b/drivers/ntb/hw/amd/ntb_hw_amd.c
@@ -160,8 +160,8 @@ static int amd_ntb_mw_set_trans(struct ntb_dev *ntb, int pidx, int idx,
 		}
 
 		/* set and verify setting the limit */
-		write64(limit, mmio + limit_reg);
-		reg_val = read64(mmio + limit_reg);
+		write64(limit, peer_mmio + limit_reg);
+		reg_val = read64(peer_mmio + limit_reg);
 		if (reg_val != limit) {
 			write64(base_addr, mmio + limit_reg);
 			write64(0, peer_mmio + xlat_reg);
@@ -183,8 +183,8 @@ static int amd_ntb_mw_set_trans(struct ntb_dev *ntb, int pidx, int idx,
 		}
 
 		/* set and verify setting the limit */
-		writel(limit, mmio + limit_reg);
-		reg_val = readl(mmio + limit_reg);
+		writel(limit, peer_mmio + limit_reg);
+		reg_val = readl(peer_mmio + limit_reg);
 		if (reg_val != limit) {
 			writel(base_addr, mmio + limit_reg);
 			writel(0, peer_mmio + xlat_reg);
-- 
2.7.4