diff options
Diffstat (limited to 'usr/src')
| -rw-r--r-- | usr/src/uts/common/io/pciex/hotplug/pciehpc.c | 62 |
1 files changed, 50 insertions, 12 deletions
diff --git a/usr/src/uts/common/io/pciex/hotplug/pciehpc.c b/usr/src/uts/common/io/pciex/hotplug/pciehpc.c index bded8b8c13..2100646260 100644 --- a/usr/src/uts/common/io/pciex/hotplug/pciehpc.c +++ b/usr/src/uts/common/io/pciex/hotplug/pciehpc.c @@ -20,8 +20,7 @@ */ /* - * Copyright 2010 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. + * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. */ /* @@ -100,6 +99,8 @@ static int pciehpc_slot_poweroff(pcie_hp_slot_t *slot_p, ddi_hp_cn_state_t *result); static int pciehpc_slot_probe(pcie_hp_slot_t *slot_p); static int pciehpc_slot_unprobe(pcie_hp_slot_t *slot_p); +static void pciehpc_handle_power_fault(dev_info_t *dip); +static void pciehpc_power_fault_handler(void *arg); #ifdef DEBUG static void pciehpc_dump_hpregs(pcie_hp_ctrl_t *ctrl_p); @@ -338,16 +339,7 @@ pciehpc_intr(dev_info_t *dip) pciehpc_reg_put16(ctrl_p, bus_p->bus_pcie_off + PCIE_SLOTCTL, control & ~PCIE_SLOTCTL_PWR_FAULT_EN); - /* - * Send the event to DDI Hotplug framework, power off - * the slot - */ - (void) ndi_hp_state_change_req(dip, - slot_p->hs_info.cn_name, - DDI_HP_CN_STATE_EMPTY, DDI_HP_REQ_ASYNC); - - pciehpc_set_led_state(ctrl_p, PCIE_HP_ATTN_LED, - PCIE_HP_LED_ON); + pciehpc_handle_power_fault(dip); } } @@ -2224,6 +2216,52 @@ pciehpc_set_led_state(pcie_hp_ctrl_t *ctrl_p, pcie_hp_led_t led, #endif } +static void +pciehpc_handle_power_fault(dev_info_t *dip) +{ + /* + * Hold the parent's ref so that it won't disappear when the taskq is + * scheduled to run. + */ + ndi_hold_devi(dip); + + if (!taskq_dispatch(system_taskq, pciehpc_power_fault_handler, dip, + TQ_NOSLEEP)) { + ndi_rele_devi(dip); + PCIE_DBG("pciehpc_intr(): " + "Failed to dispatch power fault handler, dip %p\n", dip); + } +} + +static void +pciehpc_power_fault_handler(void *arg) +{ + dev_info_t *dip = (dev_info_t *)arg; + pcie_hp_ctrl_t *ctrl_p; + pcie_hp_slot_t *slot_p; + + /* get the soft state structure for this dip */ + if ((ctrl_p = PCIE_GET_HP_CTRL(dip)) == NULL) { + ndi_rele_devi(dip); + return; + } + slot_p = ctrl_p->hc_slots[0]; + + /* + * Send the event to DDI Hotplug framework, power off + * the slot + */ + (void) ndi_hp_state_change_req(dip, + slot_p->hs_info.cn_name, + DDI_HP_CN_STATE_EMPTY, DDI_HP_REQ_SYNC); + + mutex_enter(&ctrl_p->hc_mutex); + pciehpc_set_led_state(ctrl_p, PCIE_HP_ATTN_LED, + PCIE_HP_LED_ON); + mutex_exit(&ctrl_p->hc_mutex); + ndi_rele_devi(dip); +} + #ifdef DEBUG /* * Dump PCI-E Hot Plug registers. |