X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fpci%2Fhotplug%2Fpciehp_core.c;h=601cf9045b200e73ab348dcc7e3523c62987e6a3;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=9df420db24da7939fbe92848c8b1a42d87bd9ddb;hpb=c7b5ebbddf7bcd3651947760f423e3783bbe6573;p=linux-2.6.git diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c index 9df420db2..601cf9045 100644 --- a/drivers/pci/hotplug/pciehp_core.c +++ b/drivers/pci/hotplug/pciehp_core.c @@ -23,31 +23,24 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * - * Send feedback to , + * Send feedback to , * */ -#include #include #include #include #include -#include -#include -#include -#include #include -#include -#include #include "pciehp.h" -#include "pciehprm.h" +#include /* Global variables */ int pciehp_debug; int pciehp_poll_mode; int pciehp_poll_time; +int pciehp_force; struct controller *pciehp_ctrl_list; -struct pci_func *pciehp_slot_list[256]; #define DRIVER_VERSION "0.4" #define DRIVER_AUTHOR "Dan Zink , Greg Kroah-Hartman , Dely Sy " @@ -60,9 +53,11 @@ MODULE_LICENSE("GPL"); module_param(pciehp_debug, bool, 0644); module_param(pciehp_poll_mode, bool, 0644); module_param(pciehp_poll_time, int, 0644); +module_param(pciehp_force, bool, 0644); MODULE_PARM_DESC(pciehp_debug, "Debugging mode enabled or not"); MODULE_PARM_DESC(pciehp_poll_mode, "Using polling mechanism for hot-plug events or not"); MODULE_PARM_DESC(pciehp_poll_time, "Polling mechanism frequency, in seconds"); +MODULE_PARM_DESC(pciehp_force, "Force pciehp, even if _OSC and OSHP are missing"); #define PCIE_MODULE_NAME "pciehp" @@ -90,73 +85,94 @@ static struct hotplug_slot_ops pciehp_hotplug_slot_ops = { .get_cur_bus_speed = get_cur_bus_speed, }; +/** + * release_slot - free up the memory used by a slot + * @hotplug_slot: slot to free + */ +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); + + 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; + struct slot *slot; + struct hpc_ops *hpc_ops; + struct hotplug_slot *hotplug_slot; + struct hotplug_slot_info *hotplug_slot_info; u8 number_of_slots; u8 slot_device; u32 slot_number; int result = -ENOMEM; - dbg("%s\n",__FUNCTION__); - number_of_slots = ctrl->num_slots; slot_device = ctrl->slot_device_offset; slot_number = ctrl->first_slot; while (number_of_slots) { - new_slot = kmalloc(sizeof(*new_slot), GFP_KERNEL); - if (!new_slot) + slot = kzalloc(sizeof(*slot), GFP_KERNEL); + if (!slot) goto error; - memset(new_slot, 0, sizeof(struct slot)); - new_slot->hotplug_slot = - kmalloc(sizeof(*(new_slot->hotplug_slot)), + slot->hotplug_slot = + kzalloc(sizeof(*(slot->hotplug_slot)), GFP_KERNEL); - if (!new_slot->hotplug_slot) + if (!slot->hotplug_slot) goto error_slot; - memset(new_slot->hotplug_slot, 0, sizeof(struct hotplug_slot)); + hotplug_slot = slot->hotplug_slot; - new_slot->hotplug_slot->info = - kmalloc(sizeof(*(new_slot->hotplug_slot->info)), + hotplug_slot->info = + kzalloc(sizeof(*(hotplug_slot->info)), GFP_KERNEL); - if (!new_slot->hotplug_slot->info) + if (!hotplug_slot->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) + hotplug_slot_info = hotplug_slot->info; + hotplug_slot->name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL); + if (!hotplug_slot->name) goto error_info; - new_slot->ctrl = ctrl; - new_slot->bus = ctrl->slot_bus; - new_slot->device = slot_device; - new_slot->hpc_ops = ctrl->hpc_ops; + slot->ctrl = ctrl; + slot->bus = ctrl->slot_bus; + slot->device = slot_device; + slot->hpc_ops = hpc_ops = ctrl->hpc_ops; - new_slot->number = ctrl->first_slot; - new_slot->hp_slot = slot_device - ctrl->slot_device_offset; + slot->number = ctrl->first_slot; + slot->hp_slot = slot_device - ctrl->slot_device_offset; /* register this slot with the hotplug pci core */ - new_slot->hotplug_slot->private = new_slot; - make_slot_name (new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot); - new_slot->hotplug_slot->ops = &pciehp_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); + hotplug_slot->private = slot; + hotplug_slot->release = &release_slot; + make_slot_name(hotplug_slot->name, SLOT_NAME_SIZE, slot); + hotplug_slot->ops = &pciehp_hotplug_slot_ops; + + hpc_ops->get_power_status(slot, + &(hotplug_slot_info->power_status)); + hpc_ops->get_attention_status(slot, + &(hotplug_slot_info->attention_status)); + hpc_ops->get_latch_status(slot, + &(hotplug_slot_info->latch_status)); + hpc_ops->get_adapter_status(slot, + &(hotplug_slot_info->adapter_status)); + + dbg("Registering bus=%x dev=%x hp_slot=%x sun=%x " + "slot_device_offset=%x\n", + slot->bus, slot->device, slot->hp_slot, slot->number, + ctrl->slot_device_offset); + result = pci_hp_register(hotplug_slot); if (result) { err ("pci_hp_register failed with error %d\n", result); goto error_name; } - new_slot->next = ctrl->slot; - ctrl->slot = new_slot; + slot->next = ctrl->slot; + ctrl->slot = slot; number_of_slots--; slot_device++; @@ -166,13 +182,13 @@ static int init_slots(struct controller *ctrl) return 0; error_name: - kfree(new_slot->hotplug_slot->name); + kfree(hotplug_slot->name); error_info: - kfree(new_slot->hotplug_slot->info); + kfree(hotplug_slot_info); error_hpslot: - kfree(new_slot->hotplug_slot); + kfree(hotplug_slot); error_slot: - kfree(new_slot); + kfree(slot); error: return result; } @@ -188,10 +204,6 @@ static int cleanup_slots (struct controller * ctrl) while (old_slot) { next_slot = old_slot->next; pci_hp_deregister (old_slot->hotplug_slot); - kfree(old_slot->hotplug_slot->info); - kfree(old_slot->hotplug_slot->name); - kfree(old_slot->hotplug_slot); - kfree(old_slot); old_slot = next_slot; } @@ -204,11 +216,10 @@ static int get_ctlr_slot_config(struct controller *ctrl) int num_ctlr_slots; /* Not needed; PCI Express has 1 slot per port*/ int first_device_num; /* Not needed */ int physical_slot_num; - int updown; /* Not needed */ + u8 ctrlcap; int rc; - int flags; /* Not needed */ - rc = pcie_get_ctlr_slot_config(ctrl, &num_ctlr_slots, &first_device_num, &physical_slot_num, &updown, &flags); + rc = pcie_get_ctlr_slot_config(ctrl, &num_ctlr_slots, &first_device_num, &physical_slot_num, &ctrlcap); if (rc) { err("%s: get_ctlr_slot_config fail for b:d (%x:%x)\n", __FUNCTION__, ctrl->bus, ctrl->device); return (-1); @@ -217,10 +228,10 @@ static int get_ctlr_slot_config(struct controller *ctrl) ctrl->num_slots = num_ctlr_slots; /* PCI Express has 1 slot per port */ ctrl->slot_device_offset = first_device_num; ctrl->first_slot = physical_slot_num; - ctrl->slot_num_inc = updown; /* Not needed */ /* either -1 or 1 */ + ctrl->ctrlcap = ctrlcap; - dbg("%s: bus(0x%x) num_slot(0x%x) 1st_dev(0x%x) psn(0x%x) updown(%d) for b:d (%x:%x)\n", - __FUNCTION__, ctrl->slot_bus, num_ctlr_slots, first_device_num, physical_slot_num, updown, + dbg("%s: bus(0x%x) num_slot(0x%x) 1st_dev(0x%x) psn(0x%x) ctrlcap(%x) for b:d (%x:%x)\n", + __FUNCTION__, ctrl->slot_bus, num_ctlr_slots, first_device_num, physical_slot_num, ctrlcap, ctrl->bus, ctrl->device); return (0); @@ -237,7 +248,9 @@ static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status) dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); hotplug_slot->info->attention_status = status; - slot->hpc_ops->set_attention_status(slot, status); + + if (ATTN_LED(slot->ctrl->ctrlcap)) + slot->hpc_ops->set_attention_status(slot, status); return 0; } @@ -346,7 +359,7 @@ static int get_cur_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_spe return 0; } -static int pcie_probe(struct pci_dev *pdev, const struct pci_device_id *ent) +static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_id *id) { int rc; struct controller *ctrl; @@ -354,28 +367,23 @@ static int pcie_probe(struct pci_dev *pdev, const struct pci_device_id *ent) int first_device_num = 0 ; /* first PCI device number supported by this PCIE */ int num_ctlr_slots; /* number of slots supported by this HPC */ u8 value; - - ctrl = kmalloc(sizeof(*ctrl), GFP_KERNEL); + struct pci_dev *pdev; + + ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL); if (!ctrl) { err("%s : out of memory\n", __FUNCTION__); goto err_out_none; } - memset(ctrl, 0, sizeof(struct controller)); - dbg("%s: DRV_thread pid = %d\n", __FUNCTION__, current->pid); + pdev = dev->port; + ctrl->pci_dev = pdev; - rc = pcie_init(ctrl, pdev, - (php_intr_callback_t) pciehp_handle_attention_button, - (php_intr_callback_t) pciehp_handle_switch_change, - (php_intr_callback_t) pciehp_handle_presence_change, - (php_intr_callback_t) pciehp_handle_power_fault); + rc = pcie_init(ctrl, dev); if (rc) { dbg("%s: controller initialization failed\n", PCIE_MODULE_NAME); goto err_out_free_ctrl; } - ctrl->pci_dev = pdev; - pci_set_drvdata(pdev, ctrl); ctrl->pci_bus = kmalloc(sizeof(*ctrl->pci_bus), GFP_KERNEL); @@ -384,7 +392,6 @@ static int pcie_probe(struct pci_dev *pdev, const struct pci_device_id *ent) rc = -ENOMEM; goto err_out_unmap_mmio_region; } - dbg("%s: ctrl->pci_bus %p\n", __FUNCTION__, ctrl->pci_bus); memcpy (ctrl->pci_bus, pdev->bus, sizeof (*ctrl->pci_bus)); ctrl->bus = pdev->bus->number; /* ctrl bus */ ctrl->slot_bus = pdev->subordinate->number; /* bus controlled by this HPC */ @@ -406,25 +413,6 @@ static int pcie_probe(struct pci_dev *pdev, const struct pci_device_id *ent) first_device_num = ctrl->slot_device_offset; num_ctlr_slots = ctrl->num_slots; - /* Store PCI Config Space for all devices on this bus */ - dbg("%s: Before calling pciehp_save_config, ctrl->bus %x,ctrl->slot_bus %x\n", - __FUNCTION__,ctrl->bus, ctrl->slot_bus); - rc = pciehp_save_config(ctrl, ctrl->slot_bus, num_ctlr_slots, first_device_num); - if (rc) { - err("%s: unable to save PCI configuration data, error %d\n", __FUNCTION__, rc); - goto err_out_free_ctrl_bus; - } - - /* Get IO, memory, and IRQ resources for new devices */ - rc = pciehprm_find_available_resources(ctrl); - ctrl->add_support = !rc; - - if (rc) { - dbg("pciehprm_find_available_resources = %#x\n", rc); - err("unable to locate PCI configuration resources for hot plug add.\n"); - goto err_out_free_ctrl_bus; - } - /* Setup the slot information structures */ rc = init_slots(ctrl); if (rc) { @@ -433,7 +421,6 @@ static int pcie_probe(struct pci_dev *pdev, const struct pci_device_id *ent) } t_slot = pciehp_find_slot(ctrl, first_device_num); - dbg("%s: t_slot %p\n", __FUNCTION__, t_slot); /* Finish setting up the hot plug ctrl device */ ctrl->next_event = 0; @@ -447,15 +434,15 @@ static int pcie_probe(struct pci_dev *pdev, const struct pci_device_id *ent) } /* Wait for exclusive access to hardware */ - down(&ctrl->crit_sect); + mutex_lock(&ctrl->crit_sect); t_slot->hpc_ops->get_adapter_status(t_slot, &value); /* Check if slot is occupied */ - dbg("%s: adpater value %x\n", __FUNCTION__, value); - if (!value) { + + if ((POWER_CTRL(ctrl->ctrlcap)) && !value) { rc = t_slot->hpc_ops->power_off_slot(t_slot); /* Power off slot if not occupied*/ if (rc) { /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); + mutex_unlock(&ctrl->crit_sect); goto err_out_free_ctrl_slot; } else /* Wait for the command to complete */ @@ -463,7 +450,7 @@ static int pcie_probe(struct pci_dev *pdev, const struct pci_device_id *ent) } /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); + mutex_unlock(&ctrl->crit_sect); return 0; @@ -482,7 +469,6 @@ err_out_none: static int pcie_start_thread(void) { - int loop; int retval = 0; dbg("Initialize + Start the notification/polling mechanism \n"); @@ -493,32 +479,11 @@ static int pcie_start_thread(void) return retval; } - dbg("Initialize slot lists\n"); - /* One slot list for each bus in the system */ - for (loop = 0; loop < 256; loop++) { - pciehp_slot_list[loop] = NULL; - } - return retval; } -static inline void __exit -free_pciehp_res(struct pci_resource *res) -{ - struct pci_resource *tres; - - while (res) { - tres = res; - res = res->next; - kfree(tres); - } -} - static void __exit unload_pciehpd(void) { - struct pci_func *next; - struct pci_func *TempSlot; - int loop; struct controller *ctrl; struct controller *tctrl; @@ -527,11 +492,6 @@ static void __exit unload_pciehpd(void) while (ctrl) { cleanup_slots(ctrl); - free_pciehp_res(ctrl->io_head); - free_pciehp_res(ctrl->mem_head); - free_pciehp_res(ctrl->p_mem_head); - free_pciehp_res(ctrl->bus_head); - kfree (ctrl->pci_bus); ctrl->hpc_ops->release_ctlr(ctrl); @@ -542,51 +502,57 @@ static void __exit unload_pciehpd(void) kfree(tctrl); } - for (loop = 0; loop < 256; loop++) { - next = pciehp_slot_list[loop]; - while (next != NULL) { - free_pciehp_res(next->io_head); - free_pciehp_res(next->mem_head); - free_pciehp_res(next->p_mem_head); - free_pciehp_res(next->bus_head); - - TempSlot = next; - next = next->next; - kfree(TempSlot); - } - } - /* Stop the notification mechanism */ pciehp_event_stop_thread(); } +static int hpdriver_context = 0; -static struct pci_device_id pcied_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, - }, - - { /* end: all zeroes */ } -}; - -MODULE_DEVICE_TABLE(pci, pcied_pci_tbl); +static void pciehp_remove (struct pcie_device *device) +{ + printk("%s ENTRY\n", __FUNCTION__); + printk("%s -> Call free_irq for irq = %d\n", + __FUNCTION__, device->irq); + free_irq(device->irq, &hpdriver_context); +} +#ifdef CONFIG_PM +static int pciehp_suspend (struct pcie_device *dev, pm_message_t state) +{ + printk("%s ENTRY\n", __FUNCTION__); + return 0; +} +static int pciehp_resume (struct pcie_device *dev) +{ + printk("%s ENTRY\n", __FUNCTION__); + return 0; +} +#endif -static struct pci_driver pcie_driver = { - .name = PCIE_MODULE_NAME, - .id_table = pcied_pci_tbl, - .probe = pcie_probe, - /* remove: pcie_remove_one, */ +static struct pcie_port_service_id port_pci_ids[] = { { + .vendor = PCI_ANY_ID, + .device = PCI_ANY_ID, + .port_type = PCIE_ANY_PORT, + .service_type = PCIE_PORT_SERVICE_HP, + .driver_data = 0, + }, { /* end: all zeroes */ } }; +static const char device_name[] = "hpdriver"; + +static struct pcie_port_service_driver hpdriver_portdrv = { + .name = (char *)device_name, + .id_table = &port_pci_ids[0], + .probe = pciehp_probe, + .remove = pciehp_remove, +#ifdef CONFIG_PM + .suspend = pciehp_suspend, + .resume = pciehp_resume, +#endif /* PM */ +}; static int __init pcied_init(void) { @@ -600,19 +566,16 @@ static int __init pcied_init(void) if (retval) goto error_hpc_init; - retval = pciehprm_init(PCI); - if (!retval) { - retval = pci_module_init(&pcie_driver); - dbg("pci_module_init = %d\n", retval); - info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); - } + retval = pcie_port_service_register(&hpdriver_portdrv); + dbg("pcie_port_service_register = %d\n", retval); + info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); + if (retval) + dbg("%s: Failure to register service\n", __FUNCTION__); error_hpc_init: if (retval) { - pciehprm_cleanup(); pciehp_event_stop_thread(); - } else - pciehprm_print_pirt(); + }; return retval; } @@ -622,10 +585,7 @@ static void __exit pcied_cleanup(void) dbg("unload_pciehpd()\n"); unload_pciehpd(); - pciehprm_cleanup(); - - dbg("pci_unregister_driver\n"); - pci_unregister_driver(&pcie_driver); + pcie_port_service_unregister(&hpdriver_portdrv); info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n"); }