PCI: introduce pci_slot

[linux-2.6] / drivers / pci / hotplug / shpchp_core.c

diff --git a/drivers/pci/hotplug/shpchp_core.c b/drivers/pci/hotplug/shpchp_core.c
index 80dec9796b3131161c8c4302a8e0b8eee7e7f8b3..a8cbd039b85bfde22a4f6e019d8de62cb5714f9e 100644 (file)
--- a/drivers/pci/hotplug/shpchp_core.c
+++ b/drivers/pci/hotplug/shpchp_core.c
@@ -39,6 +39,7 @@
 int shpchp_debug;
 int shpchp_poll_mode;
 int shpchp_poll_time;
+static int shpchp_slot_with_bus;
 struct workqueue_struct *shpchp_wq;
 
 #define DRIVER_VERSION "0.4"
@@ -52,9 +53,11 @@ MODULE_LICENSE("GPL");
 module_param(shpchp_debug, bool, 0644);
 module_param(shpchp_poll_mode, bool, 0644);
 module_param(shpchp_poll_time, int, 0644);
+module_param(shpchp_slot_with_bus, bool, 0644);
 MODULE_PARM_DESC(shpchp_debug, "Debugging mode enabled or not");
 MODULE_PARM_DESC(shpchp_poll_mode, "Using polling mechanism for hot-plug events or not");
 MODULE_PARM_DESC(shpchp_poll_time, "Polling mechanism frequency, in seconds");
+MODULE_PARM_DESC(shpchp_slot_with_bus, "Use bus number in the slot name");
 
 #define SHPC_MODULE_NAME "shpchp"
 
@@ -65,7 +68,6 @@ 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);
 
@@ -78,7 +80,6 @@ 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,
 };
@@ -91,7 +92,7 @@ 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);
+       dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
 
        kfree(slot->hotplug_slot->info);
        kfree(slot->hotplug_slot);
@@ -100,8 +101,12 @@ static void release_slot(struct hotplug_slot *hotplug_slot)
 
 static void make_slot_name(struct slot *slot)
 {
-       snprintf(slot->hotplug_slot->name, SLOT_NAME_SIZE, "%04d_%04d",
-                slot->bus, slot->number);
+       if (shpchp_slot_with_bus)
+               snprintf(slot->hotplug_slot->name, SLOT_NAME_SIZE, "%04d_%04d",
+                        slot->bus, slot->number);
+       else
+               snprintf(slot->hotplug_slot->name, SLOT_NAME_SIZE, "%d",
+                        slot->number);
 }
 
 static int init_slots(struct controller *ctrl)
@@ -152,9 +157,14 @@ static int init_slots(struct controller *ctrl)
                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);
-               retval = pci_hp_register(slot->hotplug_slot);
+               retval = pci_hp_register(slot->hotplug_slot,
+                               ctrl->pci_dev->subordinate, slot->device);
                if (retval) {
                        err("pci_hp_register failed with error %d\n", retval);
+                       if (retval == -EEXIST)
+                               err("Failed to register slot because of name "
+                                    "collision. Try \'shpchp_slot_with_bus\' "
+                                   "module option.\n");
                        goto error_info;
                }
 
@@ -195,7 +205,7 @@ static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status)
 {
        struct slot *slot = get_slot(hotplug_slot);
 
-       dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
+       dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
 
        hotplug_slot->info->attention_status = status;
        slot->hpc_ops->set_attention_status(slot, status);
@@ -207,7 +217,7 @@ static int enable_slot (struct hotplug_slot *hotplug_slot)
 {
        struct slot *slot = get_slot(hotplug_slot);
 
-       dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
+       dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
 
        return shpchp_sysfs_enable_slot(slot);
 }
@@ -216,7 +226,7 @@ static int disable_slot (struct hotplug_slot *hotplug_slot)
 {
        struct slot *slot = get_slot(hotplug_slot);
 
-       dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
+       dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
 
        return shpchp_sysfs_disable_slot(slot);
 }
@@ -226,7 +236,7 @@ static int get_power_status (struct hotplug_slot *hotplug_slot, u8 *value)
        struct slot *slot = get_slot(hotplug_slot);
        int retval;
 
-       dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
+       dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
 
        retval = slot->hpc_ops->get_power_status(slot, value);
        if (retval < 0)
@@ -240,7 +250,7 @@ static int get_attention_status (struct hotplug_slot *hotplug_slot, u8 *value)
        struct slot *slot = get_slot(hotplug_slot);
        int retval;
 
-       dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
+       dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
 
        retval = slot->hpc_ops->get_attention_status(slot, value);
        if (retval < 0)
@@ -254,7 +264,7 @@ static int get_latch_status (struct hotplug_slot *hotplug_slot, u8 *value)
        struct slot *slot = get_slot(hotplug_slot);
        int retval;
 
-       dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
+       dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
 
        retval = slot->hpc_ops->get_latch_status(slot, value);
        if (retval < 0)
@@ -268,7 +278,7 @@ static int get_adapter_status (struct hotplug_slot *hotplug_slot, u8 *value)
        struct slot *slot = get_slot(hotplug_slot);
        int retval;
 
-       dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
+       dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
 
        retval = slot->hpc_ops->get_adapter_status(slot, value);
        if (retval < 0)
@@ -277,24 +287,13 @@ 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);
-       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)
+static int get_max_bus_speed(struct hotplug_slot *hotplug_slot,
+                               enum pci_bus_speed *value)
 {
        struct slot *slot = get_slot(hotplug_slot);
        int retval;
 
-       dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
+       dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
 
        retval = slot->hpc_ops->get_max_bus_speed(slot, value);
        if (retval < 0)
@@ -308,7 +307,7 @@ static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_sp
        struct slot *slot = get_slot(hotplug_slot);
        int retval;
 
-       dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
+       dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
 
        retval = slot->hpc_ops->get_cur_bus_speed(slot, value);
        if (retval < 0)
@@ -319,13 +318,14 @@ static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_sp
 
 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)
@@ -338,7 +338,7 @@ static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
        ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
        if (!ctrl) {
-               err("%s : out of memory\n", __FUNCTION__);
+               err("%s : out of memory\n", __func__);
                goto err_out_none;
        }
        INIT_LIST_HEAD(&ctrl->slot_list);
@@ -402,7 +402,7 @@ static int __init shpcd_init(void)
        int retval = 0;
 
        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");
        return retval;
 }