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NTB: Register and offset values fix for memory window 

Due to incorrect limit and translation register values, NTB link was
going down when the memory window was setup. Made appropriate changes
as per spec.

Fix limit register values for BAR1, which was overlapping
with the BAR23 address.

Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Acked-by: Allen Hubbe <Allen.Hubbe@dell.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
This commit is contained in:
Shyam Sundar S K 2016-12-02 00:44:28 +05:30 committed by Jon Mason
parent e5b0d2d1ba
commit 872deb2103
1 changed files with 4 additions and 10 deletions
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14
drivers/ntb/hw/amd/ntb_hw_amd.c
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@ -138,11 +138,11 @@ static int amd_ntb_mw_set_trans(struct ntb_dev *ntb, int idx,
base_addr = pci_resource_start(ndev->ntb.pdev, bar);
if (bar != 1) {
xlat_reg = AMD_BAR23XLAT_OFFSET + ((bar - 2) << 3);
limit_reg = AMD_BAR23LMT_OFFSET + ((bar - 2) << 3);
xlat_reg = AMD_BAR23XLAT_OFFSET + ((bar - 2) << 2);
limit_reg = AMD_BAR23LMT_OFFSET + ((bar - 2) << 2);
/* Set the limit if supported */
limit = base_addr + size;
limit = size;
/* set and verify setting the translation address */
write64(addr, peer_mmio + xlat_reg);
@ -164,14 +164,8 @@ static int amd_ntb_mw_set_trans(struct ntb_dev *ntb, int idx,
xlat_reg = AMD_BAR1XLAT_OFFSET;
limit_reg = AMD_BAR1LMT_OFFSET;
/* split bar addr range must all be 32 bit */
if (addr & (~0ull << 32))
return -EINVAL;
if ((addr + size) & (~0ull << 32))
return -EINVAL;
/* Set the limit if supported */
limit = base_addr + size;
limit = size;
/* set and verify setting the translation address */
write64(addr, peer_mmio + xlat_reg);