diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/hotplug/acpiphp.h | 8 | ||||
| -rw-r--r-- | drivers/pci/hotplug/acpiphp_core.c | 129 | ||||
| -rw-r--r-- | drivers/pci/hotplug/acpiphp_glue.c | 48 |
3 files changed, 87 insertions, 98 deletions
diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h index 885838a2e93..de9df80ffb5 100644 --- a/drivers/pci/hotplug/acpiphp.h +++ b/drivers/pci/hotplug/acpiphp.h @@ -60,10 +60,7 @@ struct acpiphp_slot; * struct slot - slot information for each *physical* slot */ struct slot { - u8 number; struct hotplug_slot *hotplug_slot; - struct list_head slot_list; - struct acpiphp_slot *acpi_slot; }; @@ -119,9 +116,9 @@ struct acpiphp_slot { struct acpiphp_bridge *bridge; /* parent */ struct list_head funcs; /* one slot may have different objects (i.e. for each function) */ + struct slot *slot; struct mutex crit_sect; - u32 id; /* slot id (serial #) for hotplug core */ u8 device; /* pci device# */ u32 sun; /* ACPI _SUN (slot unique number) */ @@ -229,12 +226,13 @@ struct acpiphp_dock_station { /* acpiphp_core.c */ extern int acpiphp_register_attention(struct acpiphp_attention_info*info); extern int acpiphp_unregister_attention(struct acpiphp_attention_info *info); +extern int acpiphp_register_hotplug_slot(struct acpiphp_slot *slot); +extern void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *slot); /* acpiphp_glue.c */ extern int acpiphp_glue_init (void); extern void acpiphp_glue_exit (void); extern int acpiphp_get_num_slots (void); -extern struct acpiphp_slot *get_slot_from_id (int id); typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data); void handle_hotplug_event_func(acpi_handle, u32, void*); diff --git a/drivers/pci/hotplug/acpiphp_core.c b/drivers/pci/hotplug/acpiphp_core.c index bce71c93347..4f1b0da8e47 100644 --- a/drivers/pci/hotplug/acpiphp_core.c +++ b/drivers/pci/hotplug/acpiphp_core.c @@ -44,8 +44,6 @@ #include "pci_hotplug.h" #include "acpiphp.h" -static LIST_HEAD(slot_list); - #define MY_NAME "acpiphp" static int debug; @@ -341,62 +339,53 @@ static void release_slot(struct hotplug_slot *hotplug_slot) kfree(slot); } -/** - * init_slots - initialize 'struct slot' structures for each slot - * - */ -static int __init init_slots(void) +/* callback routine to initialize 'struct slot' for each slot */ +int acpiphp_register_hotplug_slot(struct acpiphp_slot *acpiphp_slot) { struct slot *slot; + struct hotplug_slot *hotplug_slot; + struct hotplug_slot_info *hotplug_slot_info; int retval = -ENOMEM; - int i; - - for (i = 0; i < num_slots; ++i) { - slot = kmalloc(sizeof(struct slot), GFP_KERNEL); - if (!slot) - goto error; - memset(slot, 0, sizeof(struct slot)); - - slot->hotplug_slot = kmalloc(sizeof(struct hotplug_slot), GFP_KERNEL); - if (!slot->hotplug_slot) - goto error_slot; - memset(slot->hotplug_slot, 0, sizeof(struct hotplug_slot)); - - slot->hotplug_slot->info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL); - if (!slot->hotplug_slot->info) - goto error_hpslot; - memset(slot->hotplug_slot->info, 0, sizeof(struct hotplug_slot_info)); - - slot->hotplug_slot->name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL); - if (!slot->hotplug_slot->name) - goto error_info; - - slot->number = i; - - slot->hotplug_slot->private = slot; - slot->hotplug_slot->release = &release_slot; - slot->hotplug_slot->ops = &acpi_hotplug_slot_ops; - - slot->acpi_slot = get_slot_from_id(i); - slot->hotplug_slot->info->power_status = acpiphp_get_power_status(slot->acpi_slot); - slot->hotplug_slot->info->attention_status = 0; - slot->hotplug_slot->info->latch_status = acpiphp_get_latch_status(slot->acpi_slot); - slot->hotplug_slot->info->adapter_status = acpiphp_get_adapter_status(slot->acpi_slot); - slot->hotplug_slot->info->max_bus_speed = PCI_SPEED_UNKNOWN; - slot->hotplug_slot->info->cur_bus_speed = PCI_SPEED_UNKNOWN; - - make_slot_name(slot); - - retval = pci_hp_register(slot->hotplug_slot); - if (retval) { - err("pci_hp_register failed with error %d\n", retval); - goto error_name; - } - - /* add slot to our internal list */ - list_add(&slot->slot_list, &slot_list); - info("Slot [%s] registered\n", slot->hotplug_slot->name); - } + + slot = kzalloc(sizeof(*slot), GFP_KERNEL); + if (!slot) + goto error; + + slot->hotplug_slot = kzalloc(sizeof(*hotplug_slot), GFP_KERNEL); + if (!slot->hotplug_slot) + goto error_slot; + + slot->hotplug_slot->info = kzalloc(sizeof(*hotplug_slot_info), + GFP_KERNEL); + if (!slot->hotplug_slot->info) + goto error_hpslot; + + slot->hotplug_slot->name = kzalloc(SLOT_NAME_SIZE, GFP_KERNEL); + if (!slot->hotplug_slot->name) + goto error_info; + + slot->hotplug_slot->private = slot; + slot->hotplug_slot->release = &release_slot; + slot->hotplug_slot->ops = &acpi_hotplug_slot_ops; + + slot->acpi_slot = acpiphp_slot; + slot->hotplug_slot->info->power_status = acpiphp_get_power_status(slot->acpi_slot); + slot->hotplug_slot->info->attention_status = 0; + slot->hotplug_slot->info->latch_status = acpiphp_get_latch_status(slot->acpi_slot); + slot->hotplug_slot->info->adapter_status = acpiphp_get_adapter_status(slot->acpi_slot); + slot->hotplug_slot->info->max_bus_speed = PCI_SPEED_UNKNOWN; + slot->hotplug_slot->info->cur_bus_speed = PCI_SPEED_UNKNOWN; + + acpiphp_slot->slot = slot; + make_slot_name(slot); + + retval = pci_hp_register(slot->hotplug_slot); + if (retval) { + err("pci_hp_register failed with error %d\n", retval); + goto error_name; + } + + info("Slot [%s] registered\n", slot->hotplug_slot->name); return 0; error_name: @@ -412,17 +401,16 @@ error: } -static void __exit cleanup_slots (void) +void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *acpiphp_slot) { - struct list_head *tmp, *n; - struct slot *slot; + struct slot *slot = acpiphp_slot->slot; + int retval = 0; - list_for_each_safe (tmp, n, &slot_list) { - /* memory will be freed in release_slot callback */ - slot = list_entry(tmp, struct slot, slot_list); - list_del(&slot->slot_list); - pci_hp_deregister(slot->hotplug_slot); - } + info ("Slot [%s] unregistered\n", slot->hotplug_slot->name); + + retval = pci_hp_deregister(slot->hotplug_slot); + if (retval) + err("pci_hp_deregister failed with error %d\n", retval); } @@ -439,16 +427,21 @@ static int __init acpiphp_init(void) /* read all the ACPI info from the system */ retval = init_acpi(); - if (retval && !(docking_station)) - return retval; - return init_slots(); + /* if we have found a docking station, we should + * go ahead and load even if init_acpi has found + * no slots. This handles the case when the _DCK + * method not defined under the actual dock bridge + */ + if (docking_station) + return 0; + else + return retval; } static void __exit acpiphp_exit(void) { - cleanup_slots(); /* deallocate internal data structures etc. */ acpiphp_glue_exit(); diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 22d0f1cf136..dbfdac63cb4 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -128,8 +128,7 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv) acpi_handle tmp; acpi_status status = AE_OK; unsigned long adr, sun; - int device, function; - static int num_slots = 0; /* XXX if we support I/O node hotplug... */ + int device, function, retval; status = acpi_evaluate_integer(handle, "_ADR", NULL, &adr); @@ -198,7 +197,6 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv) memset(slot, 0, sizeof(struct acpiphp_slot)); slot->bridge = bridge; - slot->id = num_slots++; slot->device = device; slot->sun = sun; INIT_LIST_HEAD(&slot->funcs); @@ -212,6 +210,11 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv) dbg("found ACPI PCI Hotplug slot %d at PCI %04x:%02x:%02x\n", slot->sun, pci_domain_nr(bridge->pci_bus), bridge->pci_bus->number, slot->device); + retval = acpiphp_register_hotplug_slot(slot); + if (retval) { + warn("acpiphp_register_hotplug_slot failed(err code = 0x%x)\n", retval); + goto err_exit; + } } newfunc->slot = slot; @@ -253,6 +256,14 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv) status = AE_OK; return status; + + err_exit: + bridge->nr_slots--; + bridge->slots = slot->next; + kfree(slot); + kfree(newfunc); + + return AE_OK; } @@ -335,9 +346,16 @@ static void init_bridge_misc(struct acpiphp_bridge *bridge) /* decode ACPI 2.0 _HPP (hot plug parameters) */ decode_hpp(bridge); + /* must be added to the list prior to calling register_slot */ + list_add(&bridge->list, &bridge_list); + /* register all slot objects under this bridge */ status = acpi_walk_namespace(ACPI_TYPE_DEVICE, bridge->handle, (u32)1, register_slot, bridge, NULL); + if (ACPI_FAILURE(status)) { + list_del(&bridge->list); + return; + } /* install notify handler */ if (bridge->type != BRIDGE_TYPE_HOST) { @@ -350,8 +368,6 @@ static void init_bridge_misc(struct acpiphp_bridge *bridge) err("failed to register interrupt notify handler\n"); } } - - list_add(&bridge->list, &bridge_list); } @@ -555,6 +571,8 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge) list_del(list); kfree(func); } + acpiphp_unregister_hotplug_slot(slot); + list_del(&slot->funcs); kfree(slot); slot = next; } @@ -1521,26 +1539,6 @@ static int acpiphp_for_each_slot(acpiphp_callback fn, void *data) } #endif -/* search matching slot from id */ -struct acpiphp_slot *get_slot_from_id(int id) -{ - struct list_head *node; - struct acpiphp_bridge *bridge; - struct acpiphp_slot *slot; - - list_for_each (node, &bridge_list) { - bridge = (struct acpiphp_bridge *)node; - for (slot = bridge->slots; slot; slot = slot->next) - if (slot->id == id) - return slot; - } - - /* should never happen! */ - err("%s: no object for id %d\n", __FUNCTION__, id); - WARN_ON(1); - return NULL; -} - /** * acpiphp_enable_slot - power on slot |