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| author | Sebastian Ott <sebott@linux.ibm.com> | 2019-06-27 15:13:05 +0200 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2019-07-04 13:13:57 +0200 |
| commit | c7ff0e918a7cb39f6bfb2a7bdc30199986ff1571 (patch) | |
| tree | 072ed18459ad304b530f9a0af4442abd7e9943b1 /arch/s390/pci | |
| parent | s390: ap: kvm: Enable PQAP/AQIC facility for the guest (diff) | |
| download | linux-c7ff0e918a7cb39f6bfb2a7bdc30199986ff1571.tar.xz linux-c7ff0e918a7cb39f6bfb2a7bdc30199986ff1571.zip | |
s390/pci: deal with devices that have no support for MIO instructions
Unfortunately we have to handle a class of devices that don't support the
new MIO instructions. Adjust resource assignment and mapping accordingly.
Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/pci')
| -rw-r--r-- | arch/s390/pci/pci.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index 86ca7f88fb22..b8a64cbb5dea 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -421,12 +421,12 @@ static void zpci_map_resources(struct pci_dev *pdev) if (!len) continue; - if (static_branch_likely(&have_mio)) + if (zpci_use_mio(zdev)) pdev->resource[i].start = (resource_size_t __force) zdev->bars[i].mio_wb; else - pdev->resource[i].start = - (resource_size_t __force) pci_iomap(pdev, i, 0); + pdev->resource[i].start = (resource_size_t __force) + pci_iomap_range_fh(pdev, i, 0, 0); pdev->resource[i].end = pdev->resource[i].start + len - 1; } @@ -444,18 +444,19 @@ static void zpci_map_resources(struct pci_dev *pdev) static void zpci_unmap_resources(struct pci_dev *pdev) { + struct zpci_dev *zdev = to_zpci(pdev); resource_size_t len; int i; - if (static_branch_likely(&have_mio)) + if (zpci_use_mio(zdev)) return; for (i = 0; i < PCI_BAR_COUNT; i++) { len = pci_resource_len(pdev, i); if (!len) continue; - pci_iounmap(pdev, (void __iomem __force *) - pdev->resource[i].start); + pci_iounmap_fh(pdev, (void __iomem __force *) + pdev->resource[i].start); } } @@ -528,7 +529,7 @@ static int zpci_setup_bus_resources(struct zpci_dev *zdev, if (zdev->bars[i].val & 4) flags |= IORESOURCE_MEM_64; - if (static_branch_likely(&have_mio)) + if (zpci_use_mio(zdev)) addr = (unsigned long) zdev->bars[i].mio_wb; else addr = ZPCI_ADDR(entry); |