From ae416e6b2936fdb70aeee6eb9066115d4521daa6 Mon Sep 17 00:00:00 2001 From: Kenji Kaneshige Date: Fri, 25 Apr 2008 14:39:06 -0700 Subject: [PATCH] pciehp: Fix wrong slot capability check Current pciehp saves only 8bits of Slot Capability registers in ctrl->ctrlcap. But it refers more than 8bit for checking EMI capability. It is clearly a bug and EMI would never work. To fix this problem, this patch saves full Slot Capability contens in ctrl->slot_cap. It also reduce the redundant reads of Slot Capability register. And this pach also cleans up the macros to check the slot capabilitys (e.g. MRL_SENS(), and so on). Signed-off-by: Kenji Kaneshige Signed-off-by: Kristen Carlson Accardi Signed-off-by: Jesse Barnes --- drivers/pci/hotplug/pciehp.h | 16 +++++------ drivers/pci/hotplug/pciehp_core.c | 8 +++--- drivers/pci/hotplug/pciehp_ctrl.c | 46 +++++++++++++++---------------- drivers/pci/hotplug/pciehp_hpc.c | 8 +++--- 4 files changed, 39 insertions(+), 39 deletions(-) diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h index 9dd132925ffa..8264a7680435 100644 --- a/drivers/pci/hotplug/pciehp.h +++ b/drivers/pci/hotplug/pciehp.h @@ -93,7 +93,7 @@ struct controller { u8 slot_device_offset; u32 first_slot; /* First physical slot number */ /* PCIE only has 1 slot */ u8 slot_bus; /* Bus where the slots handled by this controller sit */ - u8 ctrlcap; + u32 slot_cap; u8 cap_base; struct timer_list poll_timer; volatile int cmd_busy; @@ -136,13 +136,13 @@ struct controller { #define HP_SUPR_RM_SUP 0x00000020 #define EMI_PRSN 0x00020000 -#define ATTN_BUTTN(cap) (cap & ATTN_BUTTN_PRSN) -#define POWER_CTRL(cap) (cap & PWR_CTRL_PRSN) -#define MRL_SENS(cap) (cap & MRL_SENS_PRSN) -#define ATTN_LED(cap) (cap & ATTN_LED_PRSN) -#define PWR_LED(cap) (cap & PWR_LED_PRSN) -#define HP_SUPR_RM(cap) (cap & HP_SUPR_RM_SUP) -#define EMI(cap) (cap & EMI_PRSN) +#define ATTN_BUTTN(ctrl) ((ctrl)->slot_cap & ATTN_BUTTN_PRSN) +#define POWER_CTRL(ctrl) ((ctrl)->slot_cap & PWR_CTRL_PRSN) +#define MRL_SENS(ctrl) ((ctrl)->slot_cap & MRL_SENS_PRSN) +#define ATTN_LED(ctrl) ((ctrl)->slot_cap & ATTN_LED_PRSN) +#define PWR_LED(ctrl) ((ctrl)->slot_cap & PWR_LED_PRSN) +#define HP_SUPR_RM(ctrl) ((ctrl)->slot_cap & HP_SUPR_RM_SUP) +#define EMI(ctrl) ((ctrl)->slot_cap & EMI_PRSN) extern int pciehp_sysfs_enable_slot(struct slot *slot); extern int pciehp_sysfs_disable_slot(struct slot *slot); diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c index cf36f2355173..43d8ddb2d679 100644 --- a/drivers/pci/hotplug/pciehp_core.c +++ b/drivers/pci/hotplug/pciehp_core.c @@ -258,7 +258,7 @@ static int init_slots(struct controller *ctrl) goto error_info; } /* create additional sysfs entries */ - if (EMI(ctrl->ctrlcap)) { + if (EMI(ctrl)) { retval = sysfs_create_file(&hotplug_slot->kobj, &hotplug_slot_attr_lock.attr); if (retval) { @@ -291,7 +291,7 @@ static void cleanup_slots(struct controller *ctrl) list_for_each_safe(tmp, next, &ctrl->slot_list) { slot = list_entry(tmp, struct slot, slot_list); list_del(&slot->slot_list); - if (EMI(ctrl->ctrlcap)) + if (EMI(ctrl)) sysfs_remove_file(&slot->hotplug_slot->kobj, &hotplug_slot_attr_lock.attr); cancel_delayed_work(&slot->work); @@ -312,7 +312,7 @@ static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status) hotplug_slot->info->attention_status = status; - if (ATTN_LED(slot->ctrl->ctrlcap)) + if (ATTN_LED(slot->ctrl)) slot->hpc_ops->set_attention_status(slot, status); return 0; @@ -479,7 +479,7 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_ if (rc) /* -ENODEV: shouldn't happen, but deal with it */ value = 0; } - if ((POWER_CTRL(ctrl->ctrlcap)) && !value) { + if ((POWER_CTRL(ctrl)) && !value) { rc = t_slot->hpc_ops->power_off_slot(t_slot); /* Power off slot if not occupied*/ if (rc) goto err_out_free_ctrl_slot; diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c index 0c481f7d2ab3..0a7aa628e955 100644 --- a/drivers/pci/hotplug/pciehp_ctrl.c +++ b/drivers/pci/hotplug/pciehp_ctrl.c @@ -178,7 +178,7 @@ u8 pciehp_handle_power_fault(u8 hp_slot, struct controller *ctrl) static void set_slot_off(struct controller *ctrl, struct slot * pslot) { /* turn off slot, turn on Amber LED, turn off Green LED if supported*/ - if (POWER_CTRL(ctrl->ctrlcap)) { + if (POWER_CTRL(ctrl)) { if (pslot->hpc_ops->power_off_slot(pslot)) { err("%s: Issue of Slot Power Off command failed\n", __func__); @@ -186,10 +186,10 @@ static void set_slot_off(struct controller *ctrl, struct slot * pslot) } } - if (PWR_LED(ctrl->ctrlcap)) + if (PWR_LED(ctrl)) pslot->hpc_ops->green_led_off(pslot); - if (ATTN_LED(ctrl->ctrlcap)) { + if (ATTN_LED(ctrl)) { if (pslot->hpc_ops->set_attention_status(pslot, 1)) { err("%s: Issue of Set Attention Led command failed\n", __func__); @@ -214,14 +214,14 @@ static int board_added(struct slot *p_slot) __func__, p_slot->device, ctrl->slot_device_offset, p_slot->hp_slot); - if (POWER_CTRL(ctrl->ctrlcap)) { + if (POWER_CTRL(ctrl)) { /* Power on slot */ retval = p_slot->hpc_ops->power_on_slot(p_slot); if (retval) return retval; } - if (PWR_LED(ctrl->ctrlcap)) + if (PWR_LED(ctrl)) p_slot->hpc_ops->green_led_blink(p_slot); /* Wait for ~1 second */ @@ -254,7 +254,7 @@ static int board_added(struct slot *p_slot) */ if (pcie_mch_quirk) pci_fixup_device(pci_fixup_final, ctrl->pci_dev); - if (PWR_LED(ctrl->ctrlcap)) + if (PWR_LED(ctrl)) p_slot->hpc_ops->green_led_on(p_slot); return 0; @@ -279,7 +279,7 @@ static int remove_board(struct slot *p_slot) dbg("In %s, hp_slot = %d\n", __func__, p_slot->hp_slot); - if (POWER_CTRL(ctrl->ctrlcap)) { + if (POWER_CTRL(ctrl)) { /* power off slot */ retval = p_slot->hpc_ops->power_off_slot(p_slot); if (retval) { @@ -289,7 +289,7 @@ static int remove_board(struct slot *p_slot) } } - if (PWR_LED(ctrl->ctrlcap)) + if (PWR_LED(ctrl)) /* turn off Green LED */ p_slot->hpc_ops->green_led_off(p_slot); @@ -327,7 +327,7 @@ static void pciehp_power_thread(struct work_struct *work) case POWERON_STATE: mutex_unlock(&p_slot->lock); if (pciehp_enable_slot(p_slot) && - PWR_LED(p_slot->ctrl->ctrlcap)) + PWR_LED(p_slot->ctrl)) p_slot->hpc_ops->green_led_off(p_slot); mutex_lock(&p_slot->lock); p_slot->state = STATIC_STATE; @@ -409,9 +409,9 @@ static void handle_button_press_event(struct slot *p_slot) "press.\n", p_slot->name); } /* blink green LED and turn off amber */ - if (PWR_LED(ctrl->ctrlcap)) + if (PWR_LED(ctrl)) p_slot->hpc_ops->green_led_blink(p_slot); - if (ATTN_LED(ctrl->ctrlcap)) + if (ATTN_LED(ctrl)) p_slot->hpc_ops->set_attention_status(p_slot, 0); schedule_delayed_work(&p_slot->work, 5*HZ); @@ -427,13 +427,13 @@ static void handle_button_press_event(struct slot *p_slot) dbg("%s: button cancel\n", __func__); cancel_delayed_work(&p_slot->work); if (p_slot->state == BLINKINGOFF_STATE) { - if (PWR_LED(ctrl->ctrlcap)) + if (PWR_LED(ctrl)) p_slot->hpc_ops->green_led_on(p_slot); } else { - if (PWR_LED(ctrl->ctrlcap)) + if (PWR_LED(ctrl)) p_slot->hpc_ops->green_led_off(p_slot); } - if (ATTN_LED(ctrl->ctrlcap)) + if (ATTN_LED(ctrl)) p_slot->hpc_ops->set_attention_status(p_slot, 0); info("PCI slot #%s - action canceled due to button press\n", p_slot->name); @@ -492,16 +492,16 @@ static void interrupt_event_handler(struct work_struct *work) handle_button_press_event(p_slot); break; case INT_POWER_FAULT: - if (!POWER_CTRL(ctrl->ctrlcap)) + if (!POWER_CTRL(ctrl)) break; - if (ATTN_LED(ctrl->ctrlcap)) + if (ATTN_LED(ctrl)) p_slot->hpc_ops->set_attention_status(p_slot, 1); - if (PWR_LED(ctrl->ctrlcap)) + if (PWR_LED(ctrl)) p_slot->hpc_ops->green_led_off(p_slot); break; case INT_PRESENCE_ON: case INT_PRESENCE_OFF: - if (!HP_SUPR_RM(ctrl->ctrlcap)) + if (!HP_SUPR_RM(ctrl)) break; dbg("Surprise Removal\n"); update_slot_info(p_slot); @@ -531,7 +531,7 @@ int pciehp_enable_slot(struct slot *p_slot) mutex_unlock(&p_slot->ctrl->crit_sect); return -ENODEV; } - if (MRL_SENS(p_slot->ctrl->ctrlcap)) { + if (MRL_SENS(p_slot->ctrl)) { rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); if (rc || getstatus) { info("%s: latch open on slot(%s)\n", __func__, @@ -541,7 +541,7 @@ int pciehp_enable_slot(struct slot *p_slot) } } - if (POWER_CTRL(p_slot->ctrl->ctrlcap)) { + if (POWER_CTRL(p_slot->ctrl)) { rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); if (rc || getstatus) { info("%s: already enabled on slot(%s)\n", __func__, @@ -576,7 +576,7 @@ int pciehp_disable_slot(struct slot *p_slot) /* Check to see if (latch closed, card present, power on) */ mutex_lock(&p_slot->ctrl->crit_sect); - if (!HP_SUPR_RM(p_slot->ctrl->ctrlcap)) { + if (!HP_SUPR_RM(p_slot->ctrl)) { ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); if (ret || !getstatus) { info("%s: no adapter on slot(%s)\n", __func__, @@ -586,7 +586,7 @@ int pciehp_disable_slot(struct slot *p_slot) } } - if (MRL_SENS(p_slot->ctrl->ctrlcap)) { + if (MRL_SENS(p_slot->ctrl)) { ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); if (ret || getstatus) { info("%s: latch open on slot(%s)\n", __func__, @@ -596,7 +596,7 @@ int pciehp_disable_slot(struct slot *p_slot) } } - if (POWER_CTRL(p_slot->ctrl->ctrlcap)) { + if (POWER_CTRL(p_slot->ctrl)) { ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); if (ret || !getstatus) { info("%s: already disabled slot(%s)\n", __func__, diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c index 7104a15e2661..58f8018970fa 100644 --- a/drivers/pci/hotplug/pciehp_hpc.c +++ b/drivers/pci/hotplug/pciehp_hpc.c @@ -1058,11 +1058,11 @@ int pcie_init_hardware_part2(struct controller *ctrl, struct pcie_device *dev) } cmd = PRSN_DETECT_ENABLE; - if (ATTN_BUTTN(ctrl->ctrlcap)) + if (ATTN_BUTTN(ctrl)) cmd |= ATTN_BUTTN_ENABLE; - if (POWER_CTRL(ctrl->ctrlcap)) + if (POWER_CTRL(ctrl)) cmd |= PWR_FAULT_DETECT_ENABLE; - if (MRL_SENS(ctrl->ctrlcap)) + if (MRL_SENS(ctrl)) cmd |= MRL_DETECT_ENABLE; if (!pciehp_poll_mode) cmd |= HP_INTR_ENABLE; @@ -1181,7 +1181,7 @@ int pcie_init(struct controller *ctrl, struct pcie_device *dev) ctrl->slot_device_offset = 0; ctrl->num_slots = 1; ctrl->first_slot = slot_cap >> 19; - ctrl->ctrlcap = slot_cap & 0x0000007f; + ctrl->slot_cap = slot_cap; rc = pcie_init_hardware_part1(ctrl, dev); if (rc) -- GitLab