hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

PCI: cadence: Set PCI_BASE_ADDRESS_MEM_TYPE_64 if a 64-bit BAR was set-up 

cdns_pcie_ep_set_bar() does some round-up of the BAR size, which means
that a 64-bit BAR can be set-up, even when the flag
PCI_BASE_ADDRESS_MEM_TYPE_64 isn't set.

If a 64-bit BAR was set-up, set the flag PCI_BASE_ADDRESS_MEM_TYPE_64,
so that the calling function can know what BAR width that was actually
set-up.

I'm not sure why cdns_pcie_ep_set_bar() doesn't obey the flag
PCI_BASE_ADDRESS_MEM_TYPE_64, but I leave this for the MAINTAINER to
fix, since there might be a reason why this flag is ignored.

Signed-off-by: Niklas Cassel <niklas.cassel@axis.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Alan Douglas <adouglas@cadence.com>
This commit is contained in:
Niklas Cassel 2018-03-28 13:50:12 +02:00 committed by Lorenzo Pieralisi
parent d28810ba78
commit a2ea8ac4ec
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/pci/cadence/pcie-cadence-ep.c
View File

@ -106,6 +106,9 @@ static int cdns_pcie_ep_set_bar(struct pci_epc *epc, u8 fn,
if (is_64bits && (bar & 1))
return -EINVAL;
if (is_64bits && !(flags & PCI_BASE_ADDRESS_MEM_TYPE_64))
epf_bar->flags |= PCI_BASE_ADDRESS_MEM_TYPE_64;
if (is_64bits && is_prefetch)
ctrl = CDNS_PCIE_LM_BAR_CFG_CTRL_PREFETCH_MEM_64BITS;
else if (is_prefetch)