Author: kevlo
Date: Thu Oct 27 02:20:13 2016
New Revision: 307982
URL: https://svnweb.freebsd.org/changeset/base/307982
Log:
Disable CLKREQ for ASPM since re(4) doesn't implement link level power saving.
Reviewed by: yongari
Modified:
head/sys/dev/re/if_re.c
Modified: head/sys/dev/re/if_re.c
==============================================================================
--- head/sys/dev/re/if_re.c Thu Oct 27 00:33:14 2016 (r307981)
+++ head/sys/dev/re/if_re.c Thu Oct 27 02:20:13 2016 (r307982)
@@ -1358,15 +1358,17 @@ re_attach(device_t dev)
CSR_WRITE_1(sc, RL_EECMD, RL_EEMODE_OFF);
}
- /* Disable ASPM L0S/L1. */
+ /* Disable ASPM L0S/L1 and CLKREQ. */
if (sc->rl_expcap != 0) {
cap = pci_read_config(dev, sc->rl_expcap +
PCIER_LINK_CAP, 2);
if ((cap & PCIEM_LINK_CAP_ASPM) != 0) {
ctl = pci_read_config(dev, sc->rl_expcap +
PCIER_LINK_CTL, 2);
- if ((ctl & PCIEM_LINK_CTL_ASPMC) != 0) {
- ctl &= ~PCIEM_LINK_CTL_ASPMC;
+ if ((ctl & (PCIEM_LINK_CTL_ECPM |
+ PCIEM_LINK_CTL_ASPMC))!= 0) {
+ ctl &= ~(PCIEM_LINK_CTL_ECPM |
+ PCIEM_LINK_CTL_ASPMC);
pci_write_config(dev, sc->rl_expcap +
PCIER_LINK_CTL, ctl, 2);
device_printf(dev, "ASPM disabled\n");
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