68 lines
2.6 KiB
Diff
68 lines
2.6 KiB
Diff
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From: Egbert Eich <eich@suse.de>
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Date: Wed Feb 10 15:55:51 2016 +0100
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Subject: [PATCH]pci/primary: Fix up primary PCI device detection for the platfrom bus
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Patch-mainline: to be upstreamed
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Git-commit: 85d81d3ec321572aea31d34a87632442687a54f5
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References: boo#835975
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Signed-off-by: Egbert Eich <eich@suse.com>
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The detection wheter a device is the primary PCI device currently
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relies on libciaccess. This checks of the PCI device is a VGA boot
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device. On some systems however, the primary card is not flagged
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like that - this it is not discovered.
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The subsequent PCI probing has a fallback heuristic designed for this
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situation. This however causes the primary device to be flagged as a
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PCI bus device, not a 'platform bus' device.
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To fix this, we check in the subsequent xf86platformPrimary() wheter
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the primary device is flagged as a PCI bus device. If this is the
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case and the same device is in the list of the 'platform bus' devices,
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we reflag it as such.
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This fixes the detection of the primary device on older iMacs.
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Signed-off-by: Egbert Eich <eich@suse.de>
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---
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hw/xfree86/common/xf86platformBus.c | 29 +++++++++++++++++++++++++++++
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1 file changed, 29 insertions(+)
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diff --git a/hw/xfree86/common/xf86platformBus.c b/hw/xfree86/common/xf86platformBus.c
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index 8b3a862..efa6d1a 100644
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--- a/hw/xfree86/common/xf86platformBus.c
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+++ b/hw/xfree86/common/xf86platformBus.c
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@@ -622,6 +622,35 @@ void xf86platformPrimary(void)
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xf86Msg(X_NONE, "\tfalling back to %s\n", primaryBus.id.plat->attribs->syspath);
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}
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+ } else if (xf86_num_platform_devices > 0 && primaryBus.type == BUS_PCI) {
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+ /*
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+ * FIXUP: platform_find_pci_info() may not always find the primary
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+ * platform device. If a primary device is a platform device but was
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+ * identified as PCI device, let's fix this up here.
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+ */
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+ int i;
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+
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+ for (i = 0; i < xf86_num_platform_devices; i++) {
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+ char *busid = xf86_platform_odev_attributes(i)->busid;
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+ int domain, bus, dev, func;
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+ int ret;
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+
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+ if (strncmp(busid, "pci:", 4) != 0)
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+ continue;
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+
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+ ret = sscanf(busid, "pci:%04x:%02x:%02x.%u",
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+ &domain, &bus, &dev, &func);
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+ if (ret != 4)
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+ continue;
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+
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+ if (domain == primaryBus.id.pci->domain &&
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+ bus == primaryBus.id.pci->bus &&
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+ dev == primaryBus.id.pci->dev &&
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+ func == primaryBus.id.pci->func) {
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+ primaryBus.id.plat = &xf86_platform_devices[i];
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+ primaryBus.type = BUS_PLATFORM;
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+ }
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+ }
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}
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}
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#endif
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