diff options
| author | Keck, David <david.keck@amd.com> | 2006-01-16 15:22:36 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-01-31 18:00:12 -0800 |
| commit | 53044f357448693f218cc4f053affe92ed414f9d (patch) | |
| tree | dabb2a73762270027d72828a055ba1dd243860af /drivers/pci/hotplug/shpchp_ctrl.c | |
| parent | 3c0c6441883be7676b795939e268b90d6acab360 (diff) | |
[PATCH] PCI Hotplug: shpchp: AMD POGO errata fix
This patch fixes the AMD POGO errata on the hotplug controller where the
platform will lock up or reboot if PERR/SERR generation is enabled and a
slot is sent an enable command. This fix disables PERR/SERR generation
before a slot is sent the enable command by first saving related
registers, turning off SERR/PERR generation, enabling the slot, then
restoring the registers.
Signed-off-by: David Keck <david.keck@amd.com>
Cc: Kristen Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/pci/hotplug/shpchp_ctrl.c')
| -rw-r--r-- | drivers/pci/hotplug/shpchp_ctrl.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/pci/hotplug/shpchp_ctrl.c b/drivers/pci/hotplug/shpchp_ctrl.c index 25ccb0e4759..643252d9bf3 100644 --- a/drivers/pci/hotplug/shpchp_ctrl.c +++ b/drivers/pci/hotplug/shpchp_ctrl.c @@ -894,7 +894,17 @@ int shpchp_enable_slot (struct slot *p_slot) dbg("%s: p_slot->pwr_save %x\n", __FUNCTION__, p_slot->pwr_save); p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); - rc = board_added(p_slot); + if(((p_slot->ctrl->pci_dev->vendor == PCI_VENDOR_ID_AMD) || + (p_slot->ctrl->pci_dev->device == PCI_DEVICE_ID_AMD_POGO_7458)) + && p_slot->ctrl->num_slots == 1) { + /* handle amd pogo errata; this must be done before enable */ + amd_pogo_errata_save_misc_reg(p_slot); + rc = board_added(p_slot); + /* handle amd pogo errata; this must be done after enable */ + amd_pogo_errata_restore_misc_reg(p_slot); + } else + rc = board_added(p_slot); + if (rc) { p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |