diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/hotplug/rpadlpar_core.c | 13 | ||||
| -rw-r--r-- | drivers/pci/hotplug/rpadlpar_sysfs.c | 3 | ||||
| -rw-r--r-- | drivers/pci/hotplug/rpaphp.h | 8 | ||||
| -rw-r--r-- | drivers/pci/hotplug/rpaphp_core.c | 107 | ||||
| -rw-r--r-- | drivers/pci/iov.c | 11 | ||||
| -rw-r--r-- | drivers/pci/pci-driver.c | 21 | ||||
| -rw-r--r-- | drivers/pci/pci.c | 25 | ||||
| -rw-r--r-- | drivers/pci/pcie/aer/aerdrv_core.c | 3 | ||||
| -rw-r--r-- | drivers/pci/pcie/portdrv_pci.c | 3 | ||||
| -rw-r--r-- | drivers/pci/switch/switchtec.c | 4 |
10 files changed, 156 insertions, 42 deletions
diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c index a3449d717a99..fc01d7d807f3 100644 --- a/drivers/pci/hotplug/rpadlpar_core.c +++ b/drivers/pci/hotplug/rpadlpar_core.c @@ -27,6 +27,7 @@ #include <linux/mutex.h> #include <asm/rtas.h> #include <asm/vio.h> +#include <linux/firmware.h> #include "../pci.h" #include "rpaphp.h" @@ -44,15 +45,14 @@ static struct device_node *find_vio_slot_node(char *drc_name) { struct device_node *parent = of_find_node_by_name(NULL, "vdevice"); struct device_node *dn = NULL; - char *name; int rc; if (!parent) return NULL; while ((dn = of_get_next_child(parent, dn))) { - rc = rpaphp_get_drc_props(dn, NULL, &name, NULL, NULL); - if ((rc == 0) && (!strcmp(drc_name, name))) + rc = rpaphp_check_drc_props(dn, drc_name, NULL); + if (rc == 0) break; } @@ -64,15 +64,12 @@ static struct device_node *find_php_slot_pci_node(char *drc_name, char *drc_type) { struct device_node *np = NULL; - char *name; - char *type; int rc; while ((np = of_find_node_by_name(np, "pci"))) { - rc = rpaphp_get_drc_props(np, NULL, &name, &type, NULL); + rc = rpaphp_check_drc_props(np, drc_name, drc_type); if (rc == 0) - if (!strcmp(drc_name, name) && !strcmp(drc_type, type)) - break; + break; } return np; diff --git a/drivers/pci/hotplug/rpadlpar_sysfs.c b/drivers/pci/hotplug/rpadlpar_sysfs.c index edb5d8a53020..b806314349cf 100644 --- a/drivers/pci/hotplug/rpadlpar_sysfs.c +++ b/drivers/pci/hotplug/rpadlpar_sysfs.c @@ -16,6 +16,7 @@ #include <linux/string.h> #include <linux/pci.h> #include <linux/pci_hotplug.h> +#include "rpaphp.h" #include "rpadlpar.h" #include "../pci.h" @@ -27,8 +28,6 @@ #define ADD_SLOT_ATTR_NAME add_slot #define REMOVE_SLOT_ATTR_NAME remove_slot -#define MAX_DRC_NAME_LEN 64 - static ssize_t add_slot_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t nbytes) { diff --git a/drivers/pci/hotplug/rpaphp.h b/drivers/pci/hotplug/rpaphp.h index 7db024e68fe6..bdb844b01a3d 100644 --- a/drivers/pci/hotplug/rpaphp.h +++ b/drivers/pci/hotplug/rpaphp.h @@ -64,6 +64,10 @@ extern bool rpaphp_debug; #define CONFIGURED 1 #define EMPTY 0 +/* DRC constants */ + +#define MAX_DRC_NAME_LEN 64 + /* * struct slot - slot information for each *physical* slot */ @@ -91,8 +95,8 @@ int rpaphp_get_sensor_state(struct slot *slot, int *state); /* rpaphp_core.c */ int rpaphp_add_slot(struct device_node *dn); -int rpaphp_get_drc_props(struct device_node *dn, int *drc_index, - char **drc_name, char **drc_type, int *drc_power_domain); +int rpaphp_check_drc_props(struct device_node *dn, char *drc_name, + char *drc_type); /* rpaphp_slot.c */ void dealloc_slot_struct(struct slot *slot); diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c index 1e29abaaea08..53902c7c38f2 100644 --- a/drivers/pci/hotplug/rpaphp_core.c +++ b/drivers/pci/hotplug/rpaphp_core.c @@ -30,6 +30,7 @@ #include <linux/smp.h> #include <linux/init.h> #include <linux/vmalloc.h> +#include <asm/firmware.h> #include <asm/eeh.h> /* for eeh_add_device() */ #include <asm/rtas.h> /* rtas_call */ #include <asm/pci-bridge.h> /* for pci_controller */ @@ -196,25 +197,21 @@ static int get_children_props(struct device_node *dn, const int **drc_indexes, return 0; } -/* To get the DRC props describing the current node, first obtain it's - * my-drc-index property. Next obtain the DRC list from it's parent. Use - * the my-drc-index for correlation, and obtain the requested properties. + +/* Verify the existence of 'drc_name' and/or 'drc_type' within the + * current node. First obtain it's my-drc-index property. Next, + * obtain the DRC info from it's parent. Use the my-drc-index for + * correlation, and obtain/validate the requested properties. */ -int rpaphp_get_drc_props(struct device_node *dn, int *drc_index, - char **drc_name, char **drc_type, int *drc_power_domain) + +static int rpaphp_check_drc_props_v1(struct device_node *dn, char *drc_name, + char *drc_type, unsigned int my_index) { + char *name_tmp, *type_tmp; const int *indexes, *names; const int *types, *domains; - const unsigned int *my_index; - char *name_tmp, *type_tmp; int i, rc; - my_index = of_get_property(dn, "ibm,my-drc-index", NULL); - if (!my_index) { - /* Node isn't DLPAR/hotplug capable */ - return -EINVAL; - } - rc = get_children_props(dn->parent, &indexes, &names, &types, &domains); if (rc < 0) { return -EINVAL; @@ -225,24 +222,84 @@ int rpaphp_get_drc_props(struct device_node *dn, int *drc_index, /* Iterate through parent properties, looking for my-drc-index */ for (i = 0; i < be32_to_cpu(indexes[0]); i++) { - if ((unsigned int) indexes[i + 1] == *my_index) { - if (drc_name) - *drc_name = name_tmp; - if (drc_type) - *drc_type = type_tmp; - if (drc_index) - *drc_index = be32_to_cpu(*my_index); - if (drc_power_domain) - *drc_power_domain = be32_to_cpu(domains[i+1]); - return 0; - } + if ((unsigned int) indexes[i + 1] == my_index) + break; + name_tmp += (strlen(name_tmp) + 1); type_tmp += (strlen(type_tmp) + 1); } + if (((drc_name == NULL) || (drc_name && !strcmp(drc_name, name_tmp))) && + ((drc_type == NULL) || (drc_type && !strcmp(drc_type, type_tmp)))) + return 0; + return -EINVAL; } -EXPORT_SYMBOL_GPL(rpaphp_get_drc_props); + +static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name, + char *drc_type, unsigned int my_index) +{ + struct property *info; + unsigned int entries; + struct of_drc_info drc; + const __be32 *value; + char cell_drc_name[MAX_DRC_NAME_LEN]; + int j, fndit; + + info = of_find_property(dn->parent, "ibm,drc-info", NULL); + if (info == NULL) + return -EINVAL; + + value = of_prop_next_u32(info, NULL, &entries); + if (!value) + return -EINVAL; + + for (j = 0; j < entries; j++) { + of_read_drc_info_cell(&info, &value, &drc); + + /* Should now know end of current entry */ + + if (my_index > drc.last_drc_index) + continue; + + fndit = 1; + break; + } + /* Found it */ + + if (fndit) + sprintf(cell_drc_name, "%s%d", drc.drc_name_prefix, + my_index); + + if (((drc_name == NULL) || + (drc_name && !strcmp(drc_name, cell_drc_name))) && + ((drc_type == NULL) || + (drc_type && !strcmp(drc_type, drc.drc_type)))) + return 0; + + return -EINVAL; +} + +int rpaphp_check_drc_props(struct device_node *dn, char *drc_name, + char *drc_type) +{ + const unsigned int *my_index; + + my_index = of_get_property(dn, "ibm,my-drc-index", NULL); + if (!my_index) { + /* Node isn't DLPAR/hotplug capable */ + return -EINVAL; + } + + if (firmware_has_feature(FW_FEATURE_DRC_INFO)) + return rpaphp_check_drc_props_v2(dn, drc_name, drc_type, + *my_index); + else + return rpaphp_check_drc_props_v1(dn, drc_name, drc_type, + *my_index); +} +EXPORT_SYMBOL_GPL(rpaphp_check_drc_props); + static int is_php_type(char *drc_type) { diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index 6bacb8995e96..0b7b5da63d4e 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -636,6 +636,17 @@ void pci_restore_iov_state(struct pci_dev *dev) } /** + * pci_vf_drivers_autoprobe - set PF property drivers_autoprobe for VFs + * @dev: the PCI device + * @auto_probe: set VF drivers auto probe flag + */ +void pci_vf_drivers_autoprobe(struct pci_dev *dev, bool auto_probe) +{ + if (dev->is_physfn) + dev->sriov->drivers_autoprobe = auto_probe; +} + +/** * pci_iov_bus_range - find bus range used by Virtual Function * @bus: the PCI bus * diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 14fd865a5120..5958c8dda4e3 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -699,7 +699,7 @@ static void pci_pm_complete(struct device *dev) pm_generic_complete(dev); /* Resume device if platform firmware has put it in reset-power-on */ - if (dev->power.direct_complete && pm_resume_via_firmware()) { + if (pm_runtime_suspended(dev) && pm_resume_via_firmware()) { pci_power_t pre_sleep_state = pci_dev->current_state; pci_update_current_state(pci_dev, pci_dev->current_state); @@ -783,8 +783,10 @@ static int pci_pm_suspend_noirq(struct device *dev) struct pci_dev *pci_dev = to_pci_dev(dev); const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; - if (dev_pm_smart_suspend_and_suspended(dev)) + if (dev_pm_smart_suspend_and_suspended(dev)) { + dev->power.may_skip_resume = true; return 0; + } if (pci_has_legacy_pm_support(pci_dev)) return pci_legacy_suspend_late(dev, PMSG_SUSPEND); @@ -838,6 +840,16 @@ static int pci_pm_suspend_noirq(struct device *dev) Fixup: pci_fixup_device(pci_fixup_suspend_late, pci_dev); + /* + * If the target system sleep state is suspend-to-idle, it is sufficient + * to check whether or not the device's wakeup settings are good for + * runtime PM. Otherwise, the pm_resume_via_firmware() check will cause + * pci_pm_complete() to take care of fixing up the device's state + * anyway, if need be. + */ + dev->power.may_skip_resume = device_may_wakeup(dev) || + !device_can_wakeup(dev); + return 0; } @@ -847,6 +859,9 @@ static int pci_pm_resume_noirq(struct device *dev) struct device_driver *drv = dev->driver; int error = 0; + if (dev_pm_may_skip_resume(dev)) + return 0; + /* * Devices with DPM_FLAG_SMART_SUSPEND may be left in runtime suspend * during system suspend, so update their runtime PM status to "active" @@ -953,7 +968,7 @@ static int pci_pm_freeze_late(struct device *dev) if (dev_pm_smart_suspend_and_suspended(dev)) return 0; - return pm_generic_freeze_late(dev);; + return pm_generic_freeze_late(dev); } static int pci_pm_freeze_noirq(struct device *dev) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 4a7c6864fdf4..764ca7b8840d 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1458,6 +1458,7 @@ struct pci_devres { unsigned int pinned:1; unsigned int orig_intx:1; unsigned int restore_intx:1; + unsigned int mwi:1; u32 region_mask; }; @@ -1476,6 +1477,9 @@ static void pcim_release(struct device *gendev, void *res) if (this->region_mask & (1 << i)) pci_release_region(dev, i); + if (this->mwi) + pci_clear_mwi(dev); + if (this->restore_intx) pci_intx(dev, this->orig_intx); @@ -3761,6 +3765,27 @@ int pci_set_mwi(struct pci_dev *dev) EXPORT_SYMBOL(pci_set_mwi); /** + * pcim_set_mwi - a device-managed pci_set_mwi() + * @dev: the PCI device for which MWI is enabled + * + * Managed pci_set_mwi(). + * + * RETURNS: An appropriate -ERRNO error value on error, or zero for success. + */ +int pcim_set_mwi(struct pci_dev *dev) +{ + struct pci_devres *dr; + + dr = find_pci_dr(dev); + if (!dr) + return -ENOMEM; + + dr->mwi = 1; + return pci_set_mwi(dev); +} +EXPORT_SYMBOL(pcim_set_mwi); + +/** * pci_try_set_mwi - enables memory-write-invalidate PCI transaction * @dev: the PCI device for which MWI is enabled * diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c index 744805232155..8d7448063fd1 100644 --- a/drivers/pci/pcie/aer/aerdrv_core.c +++ b/drivers/pci/pcie/aer/aerdrv_core.c @@ -278,6 +278,7 @@ static int report_error_detected(struct pci_dev *dev, void *data) } else { err_handler = dev->driver->err_handler; vote = err_handler->error_detected(dev, result_data->state); + pci_uevent_ers(dev, PCI_ERS_RESULT_NONE); } result_data->result = merge_result(result_data->result, vote); @@ -341,6 +342,7 @@ static int report_resume(struct pci_dev *dev, void *data) err_handler = dev->driver->err_handler; err_handler->resume(dev); + pci_uevent_ers(dev, PCI_ERS_RESULT_RECOVERED); out: device_unlock(&dev->dev); return 0; @@ -541,6 +543,7 @@ static void do_recovery(struct pci_dev *dev, int severity) return; failed: + pci_uevent_ers(dev, PCI_ERS_RESULT_DISCONNECT); /* TODO: Should kernel panic here? */ dev_info(&dev->dev, "AER: Device recovery failed\n"); } diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index ffbf4e723527..fb1c1bb87316 100644 --- a/drivers/pci/pcie/portdrv_pci.c +++ b/drivers/pci/pcie/portdrv_pci.c @@ -150,6 +150,9 @@ static int pcie_portdrv_probe(struct pci_dev *dev, pci_save_state(dev); + dev_pm_set_driver_flags(&dev->dev, DPM_FLAG_SMART_SUSPEND | + DPM_FLAG_LEAVE_SUSPENDED); + if (pci_bridge_d3_possible(dev)) { /* * Keep the port resumed 100ms to make sure things like diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c index 730cc897b94d..fab143a17f9c 100644 --- a/drivers/pci/switch/switchtec.c +++ b/drivers/pci/switch/switchtec.c @@ -510,11 +510,11 @@ out: return -EBADMSG; } -static unsigned int switchtec_dev_poll(struct file *filp, poll_table *wait) +static __poll_t switchtec_dev_poll(struct file *filp, poll_table *wait) { struct switchtec_user *stuser = filp->private_data; struct switchtec_dev *stdev = stuser->stdev; - int ret = 0; + __poll_t ret = 0; poll_wait(filp, &stuser->comp.wait, wait); poll_wait(filp, &stdev->event_wq, wait); |