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126 lines
3.3 KiB
C
126 lines
3.3 KiB
C
From 7b48b8726b85eac66c1b164fab87d154be5aa068 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Jean-S=C3=A9bastien=20P=C3=A9dron?= <dumbbell@FreeBSD.org>
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Date: Fri, 13 Feb 2015 19:46:37 +0100
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Subject: [PATCH] Support dev.$driver.$n.%location from FreeBSD 11.x
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The format changed from:
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slot=1 function=0
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to:
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pci0:2:0:0 handle=\_SB_.PCI0.PEG3.MXM3
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Now devq_device_get_pciid_from_fd() supports both formats.
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---
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src/device.c | 89 ++++++++++++++++++++++++++++++++++++++++--------------------
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1 file changed, 60 insertions(+), 29 deletions(-)
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diff --git a/src/device.c b/src/device.c
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index 9aadc2b..77df580 100644
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--- src/device.c
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+++ src/device.c
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@@ -188,6 +188,58 @@ devq_device_get_devpath_from_fd(int fd,
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#endif /* defined(HAVE_LIBPROCSTAT_H) */
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}
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+static int
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+devq_compare_vgapci_busaddr(int i, int *domain, int *bus, int *slot,
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+ int *function)
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+{
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+ int ret;
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+ char sysctl_name[32], sysctl_value[128];
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+ size_t sysctl_value_len;
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+
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+ sprintf(sysctl_name, "dev.vgapci.%d.%%location", i);
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+
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+ sysctl_value_len = sizeof(sysctl_value);
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+ memset(sysctl_value, 0, sysctl_value_len);
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+ ret = sysctlbyname(sysctl_name, sysctl_value,
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+ &sysctl_value_len, NULL, 0);
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+ if (ret != 0)
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+ return (-1);
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+
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+ /*
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+ * dev.vgapci.$m.%location can have two formats:
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+ * o "pci0:2:0:0 handle=\_SB_.PCI0.PEG3.MXM3" (FreeBSD 11+)
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+ * o "slot=1 function=0" (up-to FreeBSD 10)
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+ */
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+
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+ ret = sscanf(sysctl_value, "pci%d:%d:%d:%d %*s",
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+ domain, bus, slot, function);
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+ if (ret == 4)
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+ return (0);
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+
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+ ret = sscanf(sysctl_value, "slot=%d function=%d %*s",
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+ slot, function);
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+ if (ret != 2)
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+ return (-1);
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+
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+ sprintf(sysctl_name, "dev.vgapci.%d.%%parent", i);
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+
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+ sysctl_value_len = sizeof(sysctl_value);
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+ memset(sysctl_value, 0, sysctl_value_len);
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+ ret = sysctlbyname(sysctl_name, sysctl_value,
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+ &sysctl_value_len, NULL, 0);
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+ if (ret != 0)
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+ return (-1);
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+
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+ ret = sscanf(sysctl_value, "pci%d", bus);
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+ if (ret != 1)
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+ return (-1);
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+
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+ /* FIXME: What domain to assume? */
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+ *domain = 0;
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+
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+ return (0);
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+}
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+
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int
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devq_device_get_pciid_from_fd(int fd,
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int *vendor_id, int *device_id)
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@@ -253,38 +305,17 @@ devq_device_get_pciid_from_fd(int fd,
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* o dev.vgapci.$m.%parent
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*/
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for (i = 0; i < DEVQ_MAX_DEVS; ++i) {
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- sprintf(sysctl_name, "dev.vgapci.%d.%%location", i);
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-
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- sysctl_value_len = sizeof(sysctl_value);
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- memset(sysctl_value, 0, sysctl_value_len);
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- ret = sysctlbyname(sysctl_name, sysctl_value,
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- &sysctl_value_len, NULL, 0);
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- if (ret != 0)
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- continue;
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+ int tmp_domain, tmp_bus, tmp_slot, tmp_function;
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- int tmp_slot, tmp_function;
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- ret = sscanf(sysctl_value, "slot=%d function=%d %*s",
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+ ret = devq_compare_vgapci_busaddr(i, &tmp_domain, &tmp_bus,
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&tmp_slot, &tmp_function);
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- if (ret != 2 ||
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- tmp_slot != slot || tmp_function != function)
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- continue;
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-
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- sprintf(sysctl_name, "dev.vgapci.%d.%%parent", i);
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-
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- sysctl_value_len = sizeof(sysctl_value);
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- memset(sysctl_value, 0, sysctl_value_len);
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- ret = sysctlbyname(sysctl_name, sysctl_value,
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- &sysctl_value_len, NULL, 0);
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- if (ret != 0)
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- continue;
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-
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- int tmp_bus;
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- ret = sscanf(sysctl_value, "pci%d",
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- &tmp_bus);
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- if (ret != 1 || tmp_bus != bus)
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- continue;
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- break;
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+ if (ret == 0 &&
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+ tmp_domain == domain &&
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+ tmp_bus == bus &&
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+ tmp_slot == slot &&
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+ tmp_function == function)
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+ break;
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}
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if (i == DEVQ_MAX_DEVS) {
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