2  * PCI Hot Plug Controller Driver for RPA-compliant PPC64 platform.
35 #include <asm/pci-bridge.h>	/* for pci_controller */
56  * set_attention_status - set attention LED
60  * echo 0 > attention -- set LED OFF
61  * echo 1 > attention -- set LED ON
62  * echo 2 > attention -- set LED ID(identify, light is blinking)
67 	struct slot *slot = (struct slot *)hotplug_slot->private;  in set_attention_status()
79 	rc = rtas_set_indicator(DR_INDICATOR, slot->index, value);  in set_attention_status()
81 		hotplug_slot->info->attention_status = value;  in set_attention_status()
87  * get_power_status - get power status of a slot
94 	struct slot *slot = (struct slot *)hotplug_slot->private;  in get_power_status()
96 	retval = rtas_get_power_level (slot->power_domain, &level);  in get_power_status()
103  * get_attention_status - get attention LED status
109 	struct slot *slot = (struct slot *)hotplug_slot->private;  in get_attention_status()
110 	*value = slot->hotplug_slot->info->attention_status;  in get_attention_status()
116 	struct slot *slot = (struct slot *)hotplug_slot->private;  in get_adapter_status()
128 		*value = slot->state;  in get_adapter_status()
136 	switch (slot->type) {  in get_max_bus_speed()
143 		speed = PCI_SPEED_33MHz;	/* speed for case 1-6 */  in get_max_bus_speed()
173 	const int *indexes, *names, *types, *domains;  in get_children_props()  local
175 	indexes = of_get_property(dn, "ibm,drc-indexes", NULL);  in get_children_props()
176 	names = of_get_property(dn, "ibm,drc-names", NULL);  in get_children_props()
177 	types = of_get_property(dn, "ibm,drc-types", NULL);  in get_children_props()
178 	domains = of_get_property(dn, "ibm,drc-power-domains", NULL);  in get_children_props()
180 	if (!indexes || !names || !types || !domains) {  in get_children_props()
181 		/* Slot does not have dynamically-removable children */  in get_children_props()
182 		return -EINVAL;  in get_children_props()
193 		*drc_power_domains = domains;  in get_children_props()
199  * my-drc-index property.  Next obtain the DRC list from it's parent.  Use
200  * the my-drc-index for correlation, and obtain the requested properties.
206 	const int *types, *domains;  in rpaphp_get_drc_props()  local
211 	my_index = of_get_property(dn, "ibm,my-drc-index", NULL);  in rpaphp_get_drc_props()
214 		return -EINVAL;  in rpaphp_get_drc_props()
217 	rc = get_children_props(dn->parent, &indexes, &names, &types, &domains);  in rpaphp_get_drc_props()
219 		return -EINVAL;  in rpaphp_get_drc_props()
225 	/* Iterate through parent properties, looking for my-drc-index */  in rpaphp_get_drc_props()
235 				*drc_power_domain = domains[i+1];  in rpaphp_get_drc_props()
242 	return -EINVAL;  in rpaphp_get_drc_props()
259  * is_php_dn() - return 1 if this is a hotpluggable pci slot, else 0
268  * for built-in pci slots (even when the built-in slots are
289  * rpaphp_add_slot -- declare a hotplug slot to the hotplug subsystem.
298  * If the device node points at an embedded (built-in) slot, this
312 	if (!dn->name || strcmp(dn->name, "pci"))  in rpaphp_add_slot()
319 	dbg("Entry %s: dn->full_name=%s\n", __func__, dn->full_name);  in rpaphp_add_slot()
328 			return -ENOMEM;  in rpaphp_add_slot()
330 		slot->type = simple_strtoul(type, NULL, 10);  in rpaphp_add_slot()
332 		dbg("Found drc-index:0x%x drc-name:%s drc-type:%s\n",  in rpaphp_add_slot()
345 	dbg("%s - Exit: rc[%d]\n", __func__, retval);  in rpaphp_add_slot()
364 		list_del(&slot->rpaphp_slot_list);  in cleanup_slots()
365 		pci_hp_deregister(slot->hotplug_slot);  in cleanup_slots()
389 	struct slot *slot = (struct slot *)hotplug_slot->private;  in enable_slot()
393 	if (slot->state == CONFIGURED)  in enable_slot()
401 		pcibios_add_pci_devices(slot->bus);  in enable_slot()
402 		slot->state = CONFIGURED;  in enable_slot()
404 		slot->state = EMPTY;  in enable_slot()
406 		err("%s: slot[%s] is in invalid state\n", __func__, slot->name);  in enable_slot()
407 		slot->state = NOT_VALID;  in enable_slot()
408 		return -EINVAL;  in enable_slot()
411 	slot->bus->max_bus_speed = get_max_bus_speed(slot);  in enable_slot()
417 	struct slot *slot = (struct slot *)hotplug_slot->private;  in disable_slot()
418 	if (slot->state == NOT_CONFIGURED)  in disable_slot()
419 		return -EINVAL;  in disable_slot()
421 	pcibios_remove_pci_devices(slot->bus);  in disable_slot()
424 	slot->state = NOT_CONFIGURED;  in disable_slot()