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Merge branch 'remotes/lorenzo/pci/iproc'

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- Invalidate iProc PAXB address mapping before programming it (Abhishek
    Shah)

* remotes/lorenzo/pci/iproc:
  PCI: iproc: Invalidate PAXB address mapping before programming it
This commit is contained in:
Bjorn Helgaas 2019-11-28 08:54:44 -06:00
commit 132c4a6b54
1 changed files with 28 additions and 0 deletions
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28
drivers/pci/controller/pcie-iproc.c
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@ -1245,6 +1245,32 @@ static int iproc_pcie_map_dma_ranges(struct iproc_pcie *pcie)
return ret;
}
static void iproc_pcie_invalidate_mapping(struct iproc_pcie *pcie)
{
struct iproc_pcie_ib *ib = &pcie->ib;
struct iproc_pcie_ob *ob = &pcie->ob;
int idx;
if (pcie->ep_is_internal)
return;
if (pcie->need_ob_cfg) {
/* iterate through all OARR mapping regions */
for (idx = ob->nr_windows - 1; idx >= 0; idx--) {
iproc_pcie_write_reg(pcie,
MAP_REG(IPROC_PCIE_OARR0, idx), 0);
}
}
if (pcie->need_ib_cfg) {
/* iterate through all IARR mapping regions */
for (idx = 0; idx < ib->nr_regions; idx++) {
iproc_pcie_write_reg(pcie,
MAP_REG(IPROC_PCIE_IARR0, idx), 0);
}
}
}
static int iproce_pcie_get_msi(struct iproc_pcie *pcie,
struct device_node *msi_node,
u64 *msi_addr)
@ -1517,6 +1543,8 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
iproc_pcie_perst_ctrl(pcie, true);
iproc_pcie_perst_ctrl(pcie, false);
iproc_pcie_invalidate_mapping(pcie);
if (pcie->need_ob_cfg) {
ret = iproc_pcie_map_ranges(pcie, res);
if (ret) {