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Fix some logic in PCIe HotPlug; display EI status

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The interpretation of the Electromechanical Interlock Status was
inverted, so we disengaged the EI if a card was inserted.
Fix it to engage the EI if a card is inserted.

When displaying the slot capabilites/status with pciconf:

- We inverted the sense of the Power Controller Control bit,
  saying the power was off when it was really on (according to
  this bit).  Fix that.

- Display the status of the Electromechanical Interlock:
        EI(engaged)
        EI(disengaged)

Reviewed by:	jhb
MFC after:	3 days
Sponsored by:	Dell Inc.
Differential Revision:	https://reviews.freebsd.org/D7426
This commit is contained in:
Eric van Gyzen 2016-08-05 23:23:48 +00:00
parent f1c1f188f7
commit a1566487db
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=303788
2 changed files with 8 additions and 5 deletions
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8
sys/dev/pci/pci_pci.c
View File

@ -1057,7 +1057,7 @@ static void
pcib_pcie_hotplug_update(struct pcib_softc *sc, uint16_t val, uint16_t mask,
bool schedule_task)
{
bool card_inserted;
bool card_inserted, ei_engaged;
/* Clear DETACHING if Present Detect has cleared. */
if ((sc->pcie_slot_sta & (PCIEM_SLOT_STA_PDC | PCIEM_SLOT_STA_PDS)) ==
@ -1094,8 +1094,8 @@ pcib_pcie_hotplug_update(struct pcib_softc *sc, uint16_t val, uint16_t mask,
*/
if (sc->pcie_slot_cap & PCIEM_SLOT_CAP_EIP) {
mask |= PCIEM_SLOT_CTL_EIC;
if (card_inserted !=
!(sc->pcie_slot_sta & PCIEM_SLOT_STA_EIS))
ei_engaged = (sc->pcie_slot_sta & PCIEM_SLOT_STA_EIS) != 0;
if (card_inserted != ei_engaged)
val |= PCIEM_SLOT_CTL_EIC;
}
@ -1122,7 +1122,7 @@ pcib_pcie_hotplug_update(struct pcib_softc *sc, uint16_t val, uint16_t mask,
pcib_pcie_hotplug_command(sc, val, mask);
/*
* During attach the child "pci" device is added sychronously;
* During attach the child "pci" device is added synchronously;
* otherwise, the task is scheduled to manage the child
* device.
*/

5
usr.sbin/pciconf/cap.c
View File

@ -529,10 +529,13 @@ cap_express(int fd, struct pci_conf *p, uint8_t ptr)
if (cap & PCIEM_SLOT_CAP_APB)
printf(" Attn Button");
if (cap & PCIEM_SLOT_CAP_PCP)
printf(" PC(%s)", ctl & PCIEM_SLOT_CTL_PCC ? "on" : "off");
printf(" PC(%s)", ctl & PCIEM_SLOT_CTL_PCC ? "off" : "on");
if (cap & PCIEM_SLOT_CAP_MRLSP)
printf(" MRL(%s)", sta & PCIEM_SLOT_STA_MRLSS ? "open" :
"closed");
if (cap & PCIEM_SLOT_CAP_EIP)
printf(" EI(%s)", sta & PCIEM_SLOT_STA_EIS ? "engaged" :
"disengaged");
}
static void