Author: kib
Date: Wed Sep 30 21:12:14 2020
New Revision: 366300
URL: https://svnweb.freebsd.org/changeset/base/366300
Log:
pciconf: print PCIe CTL max read request.
To not complicate existing parsers, the value is printed on a new
output line.
Sponsored by: Mellanox Technologies/NVIDIA Networking
MFC after: 1 week
Modified:
head/usr.sbin/pciconf/cap.c
Modified: head/usr.sbin/pciconf/cap.c
==============================================================================
--- head/usr.sbin/pciconf/cap.c Wed Sep 30 20:57:01 2020 (r366299)
+++ head/usr.sbin/pciconf/cap.c Wed Sep 30 21:12:14 2020 (r366300)
@@ -402,6 +402,28 @@ link_speed_string(uint8_t speed)
}
static const char *
+max_read_string(u_int max_read)
+{
+
+ switch (max_read) {
+ case 0x0:
+ return ("128");
+ case 0x1:
+ return ("256");
+ case 0x2:
+ return ("512");
+ case 0x3:
+ return ("1024");
+ case 0x4:
+ return ("2048");
+ case 0x5:
+ return ("4096");
+ default:
+ return ("undef");
+ }
+}
+
+static const char *
aspm_string(uint8_t aspm)
{
@@ -503,6 +525,8 @@ cap_express(int fd, struct pci_conf *p, uint8_t ptr)
(ctl & PCIEM_CTL2_ARI) ? "enabled" : "disabled");
}
}
+ printf("\n max read %s", max_read_string((ctl &
+ PCIEM_CTL_MAX_READ_REQUEST) >> 12));
cap = read_config(fd, &p->pc_sel, ptr + PCIER_LINK_CAP, 4);
sta = read_config(fd, &p->pc_sel, ptr + PCIER_LINK_STA, 2);
if (cap == 0 && sta == 0)
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