X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fpci%2Fhotplug%2Fpciehp_core.c;h=f13f31323e85e654f091ed19b033c3bb228e274f;hb=refs%2Fheads%2Fvserver;hp=8a5b2b51bde4fe98fee7887352b2baecfb80618c;hpb=6a77f38946aaee1cd85eeec6cf4229b204c15071;p=linux-2.6.git diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c index 8a5b2b51b..f13f31323 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 "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" @@ -74,6 +69,7 @@ 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); @@ -86,77 +82,99 @@ static struct hotplug_slot_ops pciehp_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, }; +/** + * 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 +184,13 @@ 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 +206,6 @@ 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; } @@ -319,6 +333,18 @@ 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 = hotplug_slot->private; + 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 = hotplug_slot->private; @@ -357,30 +383,21 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_ u8 value; struct pci_dev *pdev; - dbg("%s: Called by hp_drv\n", __FUNCTION__); - ctrl = kmalloc(sizeof(*ctrl), GFP_KERNEL); + 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, dev, - (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); @@ -389,7 +406,6 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_ 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 */ @@ -411,25 +427,6 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_ 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) { @@ -438,7 +435,6 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_ } 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; @@ -452,16 +448,15 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_ } /* Wait for exclusive access to hardware */ - down(&ctrl->crit_sect); + mutex_lock(&ctrl->ctrl_lock); t_slot->hpc_ops->get_adapter_status(t_slot, &value); /* Check if slot is occupied */ - dbg("%s: adpater value %x\n", __FUNCTION__, 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->ctrl_lock); goto err_out_free_ctrl_slot; } else /* Wait for the command to complete */ @@ -469,7 +464,7 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_ } /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); + mutex_unlock(&ctrl->ctrl_lock); return 0; @@ -488,7 +483,6 @@ err_out_none: static int pcie_start_thread(void) { - int loop; int retval = 0; dbg("Initialize + Start the notification/polling mechanism \n"); @@ -499,32 +493,11 @@ 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; @@ -533,11 +506,6 @@ 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); @@ -548,37 +516,18 @@ 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(); } -int hpdriver_context = 0; - 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); + /* XXX - Needs to be adapted to device driver model */ } #ifdef CONFIG_PM -static int pciehp_suspend (struct pcie_device *dev, u32 state) +static int pciehp_suspend (struct pcie_device *dev, pm_message_t state) { printk("%s ENTRY\n", __FUNCTION__); return 0; @@ -594,7 +543,7 @@ static int pciehp_resume (struct pcie_device *dev) static struct pcie_port_service_id port_pci_ids[] = { { .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, - .port_type = PCIE_RC_PORT, + .port_type = PCIE_ANY_PORT, .service_type = PCIE_PORT_SERVICE_HP, .driver_data = 0, }, { /* end: all zeroes */ } @@ -626,21 +575,16 @@ static int __init pcied_init(void) if (retval) goto error_hpc_init; - retval = pciehprm_init(PCI); - if (!retval) { - 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__); - } + 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; } @@ -650,9 +594,6 @@ static void __exit pcied_cleanup(void) dbg("unload_pciehpd()\n"); unload_pciehpd(); - pciehprm_cleanup(); - - dbg("pcie_port_service_unregister\n"); pcie_port_service_unregister(&hpdriver_portdrv); info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");