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PCI: tegra: Program AFI_CACHE_BAR_{0,1}_{ST,SZ} registers only for Tegra20

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Cacheable upstream transactions are supported in Tegra20 and Tegra186
only.

AFI_CACHE_BAR_{0,1}_{ST,SZ} registers are available in Tegra20 to
support cacheable upstream transactions. In Tegra186, AFI_AXCACHE
register is defined instead of AFI_CACHE_BAR_{0,1}_{ST,SZ} to be in line
with its memory subsystem design.

Therefore, program AFI_CACHE_BAR_{0,1}_{ST,SZ} registers only for Tegra20.

Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
[lorenzo.pieralisi@arm.com: updated commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Manikanta Maddireddy 2019-06-18 23:31:57 +05:30 committed by Lorenzo Pieralisi
parent eef4a35026
commit b5b4717ea0
1 changed files with 13 additions and 5 deletions
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18
drivers/pci/controller/pci-tegra.c
View file

@ -323,6 +323,7 @@ struct tegra_pcie_soc {
bool program_deskew_time;
bool raw_violation_fixup;
bool update_fc_timer;
bool has_cache_bars;
struct {
struct {
u32 rp_ectl_2_r1;
@ -932,11 +933,13 @@ static void tegra_pcie_setup_translations(struct tegra_pcie *pcie)
afi_writel(pcie, 0, AFI_AXI_BAR5_SZ);
afi_writel(pcie, 0, AFI_FPCI_BAR5);
/* map all upstream transactions as uncached */
afi_writel(pcie, 0, AFI_CACHE_BAR0_ST);
afi_writel(pcie, 0, AFI_CACHE_BAR0_SZ);
afi_writel(pcie, 0, AFI_CACHE_BAR1_ST);
afi_writel(pcie, 0, AFI_CACHE_BAR1_SZ);
if (pcie->soc->has_cache_bars) {
/* map all upstream transactions as uncached */
afi_writel(pcie, 0, AFI_CACHE_BAR0_ST);
afi_writel(pcie, 0, AFI_CACHE_BAR0_SZ);
afi_writel(pcie, 0, AFI_CACHE_BAR1_ST);
afi_writel(pcie, 0, AFI_CACHE_BAR1_SZ);
}
/* MSI translations are setup only when needed */
afi_writel(pcie, 0, AFI_MSI_FPCI_BAR_ST);
@ -2460,6 +2463,7 @@ static const struct tegra_pcie_soc tegra20_pcie = {
.program_deskew_time = false,
.raw_violation_fixup = false,
.update_fc_timer = false,
.has_cache_bars = true,
.ectl.enable = false,
};
@ -2488,6 +2492,7 @@ static const struct tegra_pcie_soc tegra30_pcie = {
.program_deskew_time = false,
.raw_violation_fixup = false,
.update_fc_timer = false,
.has_cache_bars = false,
.ectl.enable = false,
};
@ -2511,6 +2516,7 @@ static const struct tegra_pcie_soc tegra124_pcie = {
.program_deskew_time = false,
.raw_violation_fixup = true,
.update_fc_timer = false,
.has_cache_bars = false,
.ectl.enable = false,
};
@ -2534,6 +2540,7 @@ static const struct tegra_pcie_soc tegra210_pcie = {
.program_deskew_time = true,
.raw_violation_fixup = false,
.update_fc_timer = true,
.has_cache_bars = false,
.ectl = {
.regs = {
.rp_ectl_2_r1 = 0x0000000f,
@ -2574,6 +2581,7 @@ static const struct tegra_pcie_soc tegra186_pcie = {
.program_deskew_time = false,
.raw_violation_fixup = false,
.update_fc_timer = false,
.has_cache_bars = false,
.ectl.enable = false,
};