leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

drivers: pci: pcie_dw_common: add upper-limit to iATU

Browse Source 
The 4.6 spec added an upper 32bits to the ATU limit, and since this
driver is already assuming the unrolled feature added in the 4.8
specification this really should be set.

This is causing a bug with testing against the QEMU model as it
defaults the viewports to fully open and not setting this causes
the config viewport to become most of memory (obviously stopping
the emulated system working correctly)

Signed-off-by: Ben Dooks <ben.dooks@sifive.com>
This commit is contained in:
Ben Dooks 2022-10-20 16:51:09 +01:00 committed by Tom Rini
parent 1eaffe3958
commit 4c56d75117
2 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/pci/pcie_dw_common.c
View File

@ -73,6 +73,8 @@ int pcie_dw_prog_outbound_atu_unroll(struct pcie_dw *pci, int index,
upper_32_bits(cpu_addr));
dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_LIMIT,
lower_32_bits(cpu_addr + size - 1));
dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_UPPER_LIMIT,
upper_32_bits(cpu_addr + size - 1));
dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_LOWER_TARGET,
lower_32_bits(pci_addr));
dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_UPPER_TARGET,

1
drivers/pci/pcie_dw_common.h
View File

@ -32,6 +32,7 @@
#define PCIE_ATU_UNR_LIMIT 0x10
#define PCIE_ATU_UNR_LOWER_TARGET 0x14
#define PCIE_ATU_UNR_UPPER_TARGET 0x18
#define PCIE_ATU_UNR_UPPER_LIMIT 0x20
#define PCIE_ATU_REGION_INDEX1 (0x1 << 0)
#define PCIE_ATU_REGION_INDEX0 (0x0 << 0)