X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fpci%2Fhotplug%2Fshpchp_core.c;h=a7bd5048396ed61ba1d379b713215c39725e0bd0;hb=9b98b6f3e1534bba2efcd5b16318945cf2218d99;hp=a2b3f0010ceceaf049b59eeee97095dce4d9cb14;hpb=81f154427c0c50b6492d454abf98e15c1c2e354e;p=safe%2Fjmp%2Flinux-2.6 diff --git a/drivers/pci/hotplug/shpchp_core.c b/drivers/pci/hotplug/shpchp_core.c index a2b3f00..a7bd504 100644 --- a/drivers/pci/hotplug/shpchp_core.c +++ b/drivers/pci/hotplug/shpchp_core.c @@ -31,14 +31,16 @@ #include #include #include +#include #include +#include #include "shpchp.h" /* Global variables */ int shpchp_debug; int shpchp_poll_mode; int shpchp_poll_time; -struct controller *shpchp_ctrl_list; /* = NULL */ +struct workqueue_struct *shpchp_wq; #define DRIVER_VERSION "0.4" #define DRIVER_AUTHOR "Dan Zink , Greg Kroah-Hartman , Dely Sy " @@ -57,7 +59,6 @@ MODULE_PARM_DESC(shpchp_poll_time, "Polling mechanism frequency, in seconds"); #define SHPC_MODULE_NAME "shpchp" -static int shpc_start_thread (void); static int set_attention_status (struct hotplug_slot *slot, u8 value); static int enable_slot (struct hotplug_slot *slot); static int disable_slot (struct hotplug_slot *slot); @@ -65,12 +66,8 @@ static int get_power_status (struct hotplug_slot *slot, u8 *value); static int get_attention_status (struct hotplug_slot *slot, u8 *value); static int get_latch_status (struct hotplug_slot *slot, u8 *value); static int get_adapter_status (struct hotplug_slot *slot, u8 *value); -static int get_address (struct hotplug_slot *slot, u32 *value); -static int get_max_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value); -static int get_cur_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value); static struct hotplug_slot_ops shpchp_hotplug_slot_ops = { - .owner = THIS_MODULE, .set_attention_status = set_attention_status, .enable_slot = enable_slot, .disable_slot = disable_slot, @@ -78,9 +75,6 @@ static struct hotplug_slot_ops shpchp_hotplug_slot_ops = { .get_attention_status = get_attention_status, .get_latch_status = get_latch_status, .get_adapter_status = get_adapter_status, - .get_address = get_address, - .get_max_bus_speed = get_max_bus_speed, - .get_cur_bus_speed = get_cur_bus_speed, }; /** @@ -91,148 +85,110 @@ static void release_slot(struct hotplug_slot *hotplug_slot) { struct slot *slot = hotplug_slot->private; - dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); + ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", + __func__, slot_name(slot)); kfree(slot->hotplug_slot->info); - kfree(slot->hotplug_slot->name); kfree(slot->hotplug_slot); kfree(slot); } static int init_slots(struct controller *ctrl) { - struct slot *new_slot; - u8 number_of_slots; - u8 slot_device; - u32 slot_number, sun; - int result = -ENOMEM; - - number_of_slots = ctrl->num_slots; - slot_device = ctrl->slot_device_offset; - slot_number = ctrl->first_slot; - - while (number_of_slots) { - new_slot = (struct slot *) kmalloc(sizeof(struct slot), GFP_KERNEL); - if (!new_slot) + struct slot *slot; + struct hotplug_slot *hotplug_slot; + struct hotplug_slot_info *info; + char name[SLOT_NAME_SIZE]; + int retval = -ENOMEM; + int i; + + for (i = 0; i < ctrl->num_slots; i++) { + slot = kzalloc(sizeof(*slot), GFP_KERNEL); + if (!slot) goto error; - memset(new_slot, 0, sizeof(struct slot)); - new_slot->hotplug_slot = kmalloc (sizeof (struct hotplug_slot), GFP_KERNEL); - if (!new_slot->hotplug_slot) + hotplug_slot = kzalloc(sizeof(*hotplug_slot), GFP_KERNEL); + if (!hotplug_slot) goto error_slot; - memset(new_slot->hotplug_slot, 0, sizeof (struct hotplug_slot)); + slot->hotplug_slot = hotplug_slot; - new_slot->hotplug_slot->info = kmalloc (sizeof (struct hotplug_slot_info), GFP_KERNEL); - if (!new_slot->hotplug_slot->info) + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) goto error_hpslot; - memset(new_slot->hotplug_slot->info, 0, sizeof (struct hotplug_slot_info)); - new_slot->hotplug_slot->name = kmalloc (SLOT_NAME_SIZE, GFP_KERNEL); - if (!new_slot->hotplug_slot->name) - goto error_info; - - new_slot->magic = SLOT_MAGIC; - new_slot->ctrl = ctrl; - new_slot->bus = ctrl->slot_bus; - new_slot->device = slot_device; - new_slot->hpc_ops = ctrl->hpc_ops; - - if (shpchprm_get_physical_slot_number(ctrl, &sun, - new_slot->bus, new_slot->device)) - goto error_name; + hotplug_slot->info = info; - new_slot->number = sun; - new_slot->hp_slot = slot_device - ctrl->slot_device_offset; + slot->hp_slot = i; + slot->ctrl = ctrl; + slot->bus = ctrl->pci_dev->subordinate->number; + slot->device = ctrl->slot_device_offset + i; + slot->hpc_ops = ctrl->hpc_ops; + slot->number = ctrl->first_slot + (ctrl->slot_num_inc * i); + mutex_init(&slot->lock); + INIT_DELAYED_WORK(&slot->work, shpchp_queue_pushbutton_work); /* register this slot with the hotplug pci core */ - new_slot->hotplug_slot->private = new_slot; - new_slot->hotplug_slot->release = &release_slot; - make_slot_name(new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot); - new_slot->hotplug_slot->ops = &shpchp_hotplug_slot_ops; - - new_slot->hpc_ops->get_power_status(new_slot, &(new_slot->hotplug_slot->info->power_status)); - new_slot->hpc_ops->get_attention_status(new_slot, &(new_slot->hotplug_slot->info->attention_status)); - new_slot->hpc_ops->get_latch_status(new_slot, &(new_slot->hotplug_slot->info->latch_status)); - new_slot->hpc_ops->get_adapter_status(new_slot, &(new_slot->hotplug_slot->info->adapter_status)); - - dbg("Registering bus=%x dev=%x hp_slot=%x sun=%x slot_device_offset=%x\n", new_slot->bus, - new_slot->device, new_slot->hp_slot, new_slot->number, ctrl->slot_device_offset); - result = pci_hp_register (new_slot->hotplug_slot); - if (result) { - err ("pci_hp_register failed with error %d\n", result); - goto error_name; + hotplug_slot->private = slot; + hotplug_slot->release = &release_slot; + snprintf(name, SLOT_NAME_SIZE, "%d", slot->number); + hotplug_slot->ops = &shpchp_hotplug_slot_ops; + + ctrl_dbg(ctrl, "Registering domain:bus:dev=%04x:%02x:%02x " + "hp_slot=%x sun=%x slot_device_offset=%x\n", + pci_domain_nr(ctrl->pci_dev->subordinate), + slot->bus, slot->device, slot->hp_slot, slot->number, + ctrl->slot_device_offset); + retval = pci_hp_register(slot->hotplug_slot, + ctrl->pci_dev->subordinate, slot->device, name); + if (retval) { + ctrl_err(ctrl, "pci_hp_register failed with error %d\n", + retval); + goto error_info; } - new_slot->next = ctrl->slot; - ctrl->slot = new_slot; + get_power_status(hotplug_slot, &info->power_status); + get_attention_status(hotplug_slot, &info->attention_status); + get_latch_status(hotplug_slot, &info->latch_status); + get_adapter_status(hotplug_slot, &info->adapter_status); - number_of_slots--; - slot_device++; - slot_number += ctrl->slot_num_inc; + list_add(&slot->slot_list, &ctrl->slot_list); } return 0; - -error_name: - kfree(new_slot->hotplug_slot->name); error_info: - kfree(new_slot->hotplug_slot->info); + kfree(info); error_hpslot: - kfree(new_slot->hotplug_slot); + kfree(hotplug_slot); error_slot: - kfree(new_slot); + kfree(slot); error: - return result; -} - -static void cleanup_slots(struct controller *ctrl) -{ - struct slot *old_slot, *next_slot; - - old_slot = ctrl->slot; - ctrl->slot = NULL; - - while (old_slot) { - next_slot = old_slot->next; - pci_hp_deregister(old_slot->hotplug_slot); - old_slot = next_slot; - } + return retval; } -static int get_ctlr_slot_config(struct controller *ctrl) +void cleanup_slots(struct controller *ctrl) { - int num_ctlr_slots; - int first_device_num; - int physical_slot_num; - int updown; - int rc; - int flags; - - rc = shpc_get_ctlr_slot_config(ctrl, &num_ctlr_slots, &first_device_num, &physical_slot_num, &updown, &flags); - if (rc) { - err("%s: get_ctlr_slot_config fail for b:d (%x:%x)\n", __FUNCTION__, ctrl->bus, ctrl->device); - return -1; + struct list_head *tmp; + struct list_head *next; + struct slot *slot; + + list_for_each_safe(tmp, next, &ctrl->slot_list) { + slot = list_entry(tmp, struct slot, slot_list); + list_del(&slot->slot_list); + cancel_delayed_work(&slot->work); + flush_scheduled_work(); + flush_workqueue(shpchp_wq); + pci_hp_deregister(slot->hotplug_slot); } - - ctrl->num_slots = num_ctlr_slots; - ctrl->slot_device_offset = first_device_num; - ctrl->first_slot = physical_slot_num; - ctrl->slot_num_inc = updown; /* either -1 or 1 */ - - dbg("%s: num_slot(0x%x) 1st_dev(0x%x) psn(0x%x) updown(%d) for b:d (%x:%x)\n", - __FUNCTION__, num_ctlr_slots, first_device_num, physical_slot_num, updown, ctrl->bus, ctrl->device); - - return 0; } - /* * set_attention_status - Turns the Amber LED for a slot on, off or blink */ static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status) { - struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); + struct slot *slot = get_slot(hotplug_slot); - dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); + ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", + __func__, slot_name(slot)); hotplug_slot->info->attention_status = status; slot->hpc_ops->set_attention_status(slot, status); @@ -240,32 +196,33 @@ static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status) return 0; } - static int enable_slot (struct hotplug_slot *hotplug_slot) { - struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); + struct slot *slot = get_slot(hotplug_slot); - dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); + ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", + __func__, slot_name(slot)); - return shpchp_enable_slot(slot); + return shpchp_sysfs_enable_slot(slot); } - static int disable_slot (struct hotplug_slot *hotplug_slot) { - struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); + struct slot *slot = get_slot(hotplug_slot); - dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); + ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", + __func__, slot_name(slot)); - return shpchp_disable_slot(slot); + return shpchp_sysfs_disable_slot(slot); } static int get_power_status (struct hotplug_slot *hotplug_slot, u8 *value) { - struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); + struct slot *slot = get_slot(hotplug_slot); int retval; - dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); + ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", + __func__, slot_name(slot)); retval = slot->hpc_ops->get_power_status(slot, value); if (retval < 0) @@ -276,10 +233,11 @@ static int get_power_status (struct hotplug_slot *hotplug_slot, u8 *value) static int get_attention_status (struct hotplug_slot *hotplug_slot, u8 *value) { - struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); + struct slot *slot = get_slot(hotplug_slot); int retval; - dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); + ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", + __func__, slot_name(slot)); retval = slot->hpc_ops->get_attention_status(slot, value); if (retval < 0) @@ -290,10 +248,11 @@ static int get_attention_status (struct hotplug_slot *hotplug_slot, u8 *value) static int get_latch_status (struct hotplug_slot *hotplug_slot, u8 *value) { - struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); + struct slot *slot = get_slot(hotplug_slot); int retval; - dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); + ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", + __func__, slot_name(slot)); retval = slot->hpc_ops->get_latch_status(slot, value); if (retval < 0) @@ -304,10 +263,11 @@ static int get_latch_status (struct hotplug_slot *hotplug_slot, u8 *value) static int get_adapter_status (struct hotplug_slot *hotplug_slot, u8 *value) { - struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); + struct slot *slot = get_slot(hotplug_slot); int retval; - dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); + ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", + __func__, slot_name(slot)); retval = slot->hpc_ops->get_adapter_status(slot, value); if (retval < 0) @@ -316,151 +276,57 @@ static int get_adapter_status (struct hotplug_slot *hotplug_slot, u8 *value) return 0; } -static int get_address (struct hotplug_slot *hotplug_slot, u32 *value) -{ - struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); - struct pci_bus *bus = slot->ctrl->pci_dev->subordinate; - - dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); - - *value = (pci_domain_nr(bus) << 16) | (slot->bus << 8) | slot->device; - - return 0; -} - -static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) -{ - struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); - int retval; - - dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); - - retval = slot->hpc_ops->get_max_bus_speed(slot, value); - if (retval < 0) - *value = PCI_SPEED_UNKNOWN; - - return 0; -} - -static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) -{ - struct slot *slot = get_slot (hotplug_slot, __FUNCTION__); - int retval; - - dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); - - retval = slot->hpc_ops->get_cur_bus_speed(slot, value); - if (retval < 0) - *value = PCI_SPEED_UNKNOWN; - - return 0; -} - static int is_shpc_capable(struct pci_dev *dev) { - if ((dev->vendor == PCI_VENDOR_ID_AMD) || (dev->device == - PCI_DEVICE_ID_AMD_GOLAM_7450)) - return 1; - if (pci_find_capability(dev, PCI_CAP_ID_SHPC)) - return 1; - - return 0; + if ((dev->vendor == PCI_VENDOR_ID_AMD) || (dev->device == + PCI_DEVICE_ID_AMD_GOLAM_7450)) + return 1; + if (!pci_find_capability(dev, PCI_CAP_ID_SHPC)) + return 0; + if (get_hp_hw_control_from_firmware(dev)) + return 0; + return 1; } static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { int rc; struct controller *ctrl; - struct slot *t_slot; - int first_device_num; /* first PCI device number supported by this SHPC */ - int num_ctlr_slots; /* number of slots supported by this SHPC */ if (!is_shpc_capable(pdev)) return -ENODEV; - ctrl = (struct controller *) kmalloc(sizeof(struct controller), GFP_KERNEL); + ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL); if (!ctrl) { - err("%s : out of memory\n", __FUNCTION__); + dev_err(&pdev->dev, "%s: Out of memory\n", __func__); goto err_out_none; } - memset(ctrl, 0, sizeof(struct controller)); + INIT_LIST_HEAD(&ctrl->slot_list); rc = shpc_init(ctrl, pdev); if (rc) { - dbg("%s: controller initialization failed\n", SHPC_MODULE_NAME); + ctrl_dbg(ctrl, "Controller initialization failed\n"); goto err_out_free_ctrl; } pci_set_drvdata(pdev, ctrl); - ctrl->pci_bus = kmalloc (sizeof (*ctrl->pci_bus), GFP_KERNEL); - if (!ctrl->pci_bus) { - err("out of memory\n"); - rc = -ENOMEM; - goto err_out_unmap_mmio_region; - } - - memcpy (ctrl->pci_bus, pdev->bus, sizeof (*ctrl->pci_bus)); - ctrl->bus = pdev->bus->number; - ctrl->slot_bus = pdev->subordinate->number; - - ctrl->device = PCI_SLOT(pdev->devfn); - ctrl->function = PCI_FUNC(pdev->devfn); - dbg("ctrl bus=0x%x, device=%x, function=%x, irq=%x\n", ctrl->bus, ctrl->device, ctrl->function, pdev->irq); - - /* - * Save configuration headers for this and subordinate PCI buses - */ - - rc = get_ctlr_slot_config(ctrl); - if (rc) { - err(msg_initialization_err, rc); - goto err_out_free_ctrl_bus; - } - first_device_num = ctrl->slot_device_offset; - num_ctlr_slots = ctrl->num_slots; - - ctrl->add_support = 1; - /* Setup the slot information structures */ rc = init_slots(ctrl); if (rc) { - err(msg_initialization_err, 6); - goto err_out_free_ctrl_slot; - } - - /* Now hpc_functions (slot->hpc_ops->functions) are ready */ - t_slot = shpchp_find_slot(ctrl, first_device_num); - - /* Check for operation bus speed */ - rc = t_slot->hpc_ops->get_cur_bus_speed(t_slot, &ctrl->speed); - dbg("%s: t_slot->hp_slot %x\n", __FUNCTION__,t_slot->hp_slot); - - if (rc || ctrl->speed == PCI_SPEED_UNKNOWN) { - err(SHPC_MODULE_NAME ": Can't get current bus speed. Set to 33MHz PCI.\n"); - ctrl->speed = PCI_SPEED_33MHz; + ctrl_err(ctrl, "Slot initialization failed\n"); + goto err_out_release_ctlr; } - /* Finish setting up the hot plug ctrl device */ - ctrl->next_event = 0; - - if (!shpchp_ctrl_list) { - shpchp_ctrl_list = ctrl; - ctrl->next = NULL; - } else { - ctrl->next = shpchp_ctrl_list; - shpchp_ctrl_list = ctrl; - } - - shpchp_create_ctrl_files(ctrl); + rc = shpchp_create_ctrl_files(ctrl); + if (rc) + goto err_cleanup_slots; return 0; -err_out_free_ctrl_slot: +err_cleanup_slots: cleanup_slots(ctrl); -err_out_free_ctrl_bus: - kfree(ctrl->pci_bus); -err_out_unmap_mmio_region: +err_out_release_ctlr: ctrl->hpc_ops->release_ctlr(ctrl); err_out_free_ctrl: kfree(ctrl); @@ -468,104 +334,42 @@ err_out_none: return -ENODEV; } - -static int shpc_start_thread(void) -{ - int retval = 0; - - dbg("Initialize + Start the notification/polling mechanism \n"); - - retval = shpchp_event_start_thread(); - if (retval) { - dbg("shpchp_event_start_thread() failed\n"); - return retval; - } - - return retval; -} - -static void __exit unload_shpchpd(void) +static void shpc_remove(struct pci_dev *dev) { - struct controller *ctrl; - struct controller *tctrl; - - ctrl = shpchp_ctrl_list; - - while (ctrl) { - shpchp_remove_ctrl_files(ctrl); - cleanup_slots(ctrl); - - kfree (ctrl->pci_bus); - ctrl->hpc_ops->release_ctlr(ctrl); - - tctrl = ctrl; - ctrl = ctrl->next; - - kfree(tctrl); - } - - /* Stop the notification mechanism */ - shpchp_event_stop_thread(); + struct controller *ctrl = pci_get_drvdata(dev); + shpchp_remove_ctrl_files(ctrl); + ctrl->hpc_ops->release_ctlr(ctrl); + kfree(ctrl); } - static struct pci_device_id shpcd_pci_tbl[] = { - { - .class = ((PCI_CLASS_BRIDGE_PCI << 8) | 0x00), - .class_mask = ~0, - .vendor = PCI_ANY_ID, - .device = PCI_ANY_ID, - .subvendor = PCI_ANY_ID, - .subdevice = PCI_ANY_ID, - }, - + {PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) | 0x00), ~0)}, { /* end: all zeroes */ } }; - MODULE_DEVICE_TABLE(pci, shpcd_pci_tbl); - - static struct pci_driver shpc_driver = { .name = SHPC_MODULE_NAME, .id_table = shpcd_pci_tbl, .probe = shpc_probe, - /* remove: shpc_remove_one, */ + .remove = shpc_remove, }; - - static int __init shpcd_init(void) { int retval = 0; -#ifdef CONFIG_HOTPLUG_PCI_SHPC_POLL_EVENT_MODE - shpchp_poll_mode = 1; -#endif - - retval = shpc_start_thread(); - if (retval) - goto error_hpc_init; - retval = pci_register_driver(&shpc_driver); - dbg("%s: pci_register_driver = %d\n", __FUNCTION__, retval); + dbg("%s: pci_register_driver = %d\n", __func__, retval); info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); - -error_hpc_init: - if (retval) { - shpchp_event_stop_thread(); - } return retval; } static void __exit shpcd_cleanup(void) { dbg("unload_shpchpd()\n"); - unload_shpchpd(); - pci_unregister_driver(&shpc_driver); - info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n"); }