Currently dw_pcie_setup_rc configures memory base and memory
limit in the type1 configuration header for the root complex.
In doing so it uses the cpu address (pp->mem_base) rather than
the bus address (pp->mem_bus_addr): this is wrong and it is
useless since the configuration is overwritten later on when
pci_bus_assign_resources() is called.
Therefore this patch just removes this configuration from
dw_pcie_setup_rc.
Signed-off-by: Gabriele Paoloni <gabriele.paoloni@xxxxxxxxxx>
---
v1 -> v2 : removed unused variables in dw_pcie_setup_rc()
---
drivers/pci/host/pcie-designware.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
index a4cccd3..e3cb1f9 100644
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -728,8 +728,6 @@ static struct pci_ops dw_pcie_ops = {
void dw_pcie_setup_rc(struct pcie_port *pp)
{
u32 val;
- u32 membase;
- u32 memlimit;
/* set the number of lanes */
dw_pcie_readl_rc(pp, PCIE_PORT_LINK_CONTROL, &val);
@@ -788,12 +786,6 @@ void dw_pcie_setup_rc(struct pcie_port *pp)
val |= 0x00010100;
dw_pcie_writel_rc(pp, val, PCI_PRIMARY_BUS);
- /* setup memory base, memory limit */
- membase = ((u32)pp->mem_base & 0xfff00000) >> 16;
- memlimit = (pp->mem_size + (u32)pp->mem_base) & 0xfff00000;
- val = memlimit | membase;
- dw_pcie_writel_rc(pp, val, PCI_MEMORY_BASE);
-
/* setup command register */
dw_pcie_readl_rc(pp, PCI_COMMAND, &val);
val &= 0xffff0000;
--
2.1.4
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