NTB: ntb_hw_amd: set peer limit register (a5c3666f) · Commits · 戴 / test

As per amd ntb spec it says that peer limit register must be programmed Signed-off-by:

drivers/ntb/hw/amd/ntb_hw_amd.c

+4 −4

Original line number	Diff line number	Diff line
		@@ -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);