| /* |
| * Compaq Hot Plug Controller Driver |
| * |
| * Copyright (C) 1995,2001 Compaq Computer Corporation |
| * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com> |
| * Copyright (C) 2001 IBM Corp. |
| * |
| * All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or (at |
| * your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| * NON INFRINGEMENT. See the GNU General Public License for more |
| * details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| * |
| * Send feedback to <greg@kroah.com> |
| * |
| * Jan 12, 2003 - Added 66/100/133MHz PCI-X support, |
| * Torben Mathiasen <torben.mathiasen@hp.com> |
| * |
| */ |
| |
| #include <linux/config.h> |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/kernel.h> |
| #include <linux/types.h> |
| #include <linux/proc_fs.h> |
| #include <linux/slab.h> |
| #include <linux/workqueue.h> |
| #include <linux/pci.h> |
| #include <linux/init.h> |
| #include <linux/interrupt.h> |
| |
| #include <asm/uaccess.h> |
| |
| #include "cpqphp.h" |
| #include "cpqphp_nvram.h" |
| #include "../../../arch/i386/pci/pci.h" /* horrible hack showing how processor dependent we are... */ |
| |
| |
| /* Global variables */ |
| int cpqhp_debug; |
| int cpqhp_legacy_mode; |
| struct controller *cpqhp_ctrl_list; /* = NULL */ |
| struct pci_func *cpqhp_slot_list[256]; |
| |
| /* local variables */ |
| static void __iomem *smbios_table; |
| static void __iomem *smbios_start; |
| static void __iomem *cpqhp_rom_start; |
| static int power_mode; |
| static int debug; |
| static int initialized; |
| |
| #define DRIVER_VERSION "0.9.8" |
| #define DRIVER_AUTHOR "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>" |
| #define DRIVER_DESC "Compaq Hot Plug PCI Controller Driver" |
| |
| MODULE_AUTHOR(DRIVER_AUTHOR); |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_LICENSE("GPL"); |
| |
| module_param(power_mode, bool, 0644); |
| MODULE_PARM_DESC(power_mode, "Power mode enabled or not"); |
| |
| module_param(debug, bool, 0644); |
| MODULE_PARM_DESC(debug, "Debugging mode enabled or not"); |
| |
| #define CPQHPC_MODULE_MINOR 208 |
| |
| static int one_time_init (void); |
| static int set_attention_status (struct hotplug_slot *slot, u8 value); |
| static int process_SI (struct hotplug_slot *slot); |
| static int process_SS (struct hotplug_slot *slot); |
| static int hardware_test (struct hotplug_slot *slot, u32 value); |
| 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_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 cpqphp_hotplug_slot_ops = { |
| .owner = THIS_MODULE, |
| .set_attention_status = set_attention_status, |
| .enable_slot = process_SI, |
| .disable_slot = process_SS, |
| .hardware_test = hardware_test, |
| .get_power_status = get_power_status, |
| .get_attention_status = get_attention_status, |
| .get_latch_status = get_latch_status, |
| .get_adapter_status = get_adapter_status, |
| .get_max_bus_speed = get_max_bus_speed, |
| .get_cur_bus_speed = get_cur_bus_speed, |
| }; |
| |
| |
| static inline int is_slot64bit(struct slot *slot) |
| { |
| return (readb(slot->p_sm_slot + SMBIOS_SLOT_WIDTH) == 0x06) ? 1 : 0; |
| } |
| |
| static inline int is_slot66mhz(struct slot *slot) |
| { |
| return (readb(slot->p_sm_slot + SMBIOS_SLOT_TYPE) == 0x0E) ? 1 : 0; |
| } |
| |
| /** |
| * detect_SMBIOS_pointer - find the System Management BIOS Table in mem region. |
| * |
| * @begin: begin pointer for region to be scanned. |
| * @end: end pointer for region to be scanned. |
| * |
| * Returns pointer to the head of the SMBIOS tables (or NULL) |
| * |
| */ |
| static void __iomem * detect_SMBIOS_pointer(void __iomem *begin, void __iomem *end) |
| { |
| void __iomem *fp; |
| void __iomem *endp; |
| u8 temp1, temp2, temp3, temp4; |
| int status = 0; |
| |
| endp = (end - sizeof(u32) + 1); |
| |
| for (fp = begin; fp <= endp; fp += 16) { |
| temp1 = readb(fp); |
| temp2 = readb(fp+1); |
| temp3 = readb(fp+2); |
| temp4 = readb(fp+3); |
| if (temp1 == '_' && |
| temp2 == 'S' && |
| temp3 == 'M' && |
| temp4 == '_') { |
| status = 1; |
| break; |
| } |
| } |
| |
| if (!status) |
| fp = NULL; |
| |
| dbg("Discovered SMBIOS Entry point at %p\n", fp); |
| |
| return fp; |
| } |
| |
| /** |
| * init_SERR - Initializes the per slot SERR generation. |
| * |
| * For unexpected switch opens |
| * |
| */ |
| static int init_SERR(struct controller * ctrl) |
| { |
| u32 tempdword; |
| u32 number_of_slots; |
| u8 physical_slot; |
| |
| if (!ctrl) |
| return 1; |
| |
| tempdword = ctrl->first_slot; |
| |
| number_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F; |
| // Loop through slots |
| while (number_of_slots) { |
| physical_slot = tempdword; |
| writeb(0, ctrl->hpc_reg + SLOT_SERR); |
| tempdword++; |
| number_of_slots--; |
| } |
| |
| return 0; |
| } |
| |
| |
| /* nice debugging output */ |
| static int pci_print_IRQ_route (void) |
| { |
| struct irq_routing_table *routing_table; |
| int len; |
| int loop; |
| |
| u8 tbus, tdevice, tslot; |
| |
| routing_table = pcibios_get_irq_routing_table(); |
| if (routing_table == NULL) { |
| err("No BIOS Routing Table??? Not good\n"); |
| return -ENOMEM; |
| } |
| |
| len = (routing_table->size - sizeof(struct irq_routing_table)) / |
| sizeof(struct irq_info); |
| // Make sure I got at least one entry |
| if (len == 0) { |
| kfree(routing_table); |
| return -1; |
| } |
| |
| dbg("bus dev func slot\n"); |
| |
| for (loop = 0; loop < len; ++loop) { |
| tbus = routing_table->slots[loop].bus; |
| tdevice = routing_table->slots[loop].devfn; |
| tslot = routing_table->slots[loop].slot; |
| dbg("%d %d %d %d\n", tbus, tdevice >> 3, tdevice & 0x7, tslot); |
| |
| } |
| kfree(routing_table); |
| return 0; |
| } |
| |
| |
| /** |
| * get_subsequent_smbios_entry: get the next entry from bios table. |
| * |
| * Gets the first entry if previous == NULL |
| * Otherwise, returns the next entry |
| * Uses global SMBIOS Table pointer |
| * |
| * @curr: %NULL or pointer to previously returned structure |
| * |
| * returns a pointer to an SMBIOS structure or NULL if none found |
| */ |
| static void __iomem *get_subsequent_smbios_entry(void __iomem *smbios_start, |
| void __iomem *smbios_table, |
| void __iomem *curr) |
| { |
| u8 bail = 0; |
| u8 previous_byte = 1; |
| void __iomem *p_temp; |
| void __iomem *p_max; |
| |
| if (!smbios_table || !curr) |
| return(NULL); |
| |
| // set p_max to the end of the table |
| p_max = smbios_start + readw(smbios_table + ST_LENGTH); |
| |
| p_temp = curr; |
| p_temp += readb(curr + SMBIOS_GENERIC_LENGTH); |
| |
| while ((p_temp < p_max) && !bail) { |
| /* Look for the double NULL terminator |
| * The first condition is the previous byte |
| * and the second is the curr */ |
| if (!previous_byte && !(readb(p_temp))) { |
| bail = 1; |
| } |
| |
| previous_byte = readb(p_temp); |
| p_temp++; |
| } |
| |
| if (p_temp < p_max) { |
| return p_temp; |
| } else { |
| return NULL; |
| } |
| } |
| |
| |
| /** |
| * get_SMBIOS_entry |
| * |
| * @type:SMBIOS structure type to be returned |
| * @previous: %NULL or pointer to previously returned structure |
| * |
| * Gets the first entry of the specified type if previous == NULL |
| * Otherwise, returns the next entry of the given type. |
| * Uses global SMBIOS Table pointer |
| * Uses get_subsequent_smbios_entry |
| * |
| * returns a pointer to an SMBIOS structure or %NULL if none found |
| */ |
| static void __iomem *get_SMBIOS_entry(void __iomem *smbios_start, |
| void __iomem *smbios_table, |
| u8 type, |
| void __iomem *previous) |
| { |
| if (!smbios_table) |
| return NULL; |
| |
| if (!previous) { |
| previous = smbios_start; |
| } else { |
| previous = get_subsequent_smbios_entry(smbios_start, |
| smbios_table, previous); |
| } |
| |
| while (previous) { |
| if (readb(previous + SMBIOS_GENERIC_TYPE) != type) { |
| previous = get_subsequent_smbios_entry(smbios_start, |
| smbios_table, previous); |
| } else { |
| break; |
| } |
| } |
| |
| return previous; |
| } |
| |
| 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 ctrl_slot_setup(struct controller *ctrl, |
| void __iomem *smbios_start, |
| void __iomem *smbios_table) |
| { |
| struct slot *slot; |
| struct hotplug_slot *hotplug_slot; |
| struct hotplug_slot_info *hotplug_slot_info; |
| u8 number_of_slots; |
| u8 slot_device; |
| u8 slot_number; |
| u8 ctrl_slot; |
| u32 tempdword; |
| void __iomem *slot_entry= NULL; |
| int result = -ENOMEM; |
| |
| dbg("%s\n", __FUNCTION__); |
| |
| tempdword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR); |
| |
| number_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F; |
| slot_device = readb(ctrl->hpc_reg + SLOT_MASK) >> 4; |
| slot_number = ctrl->first_slot; |
| |
| while (number_of_slots) { |
| slot = kzalloc(sizeof(*slot), GFP_KERNEL); |
| if (!slot) |
| goto error; |
| |
| slot->hotplug_slot = kzalloc(sizeof(*(slot->hotplug_slot)), |
| GFP_KERNEL); |
| if (!slot->hotplug_slot) |
| goto error_slot; |
| hotplug_slot = slot->hotplug_slot; |
| |
| hotplug_slot->info = |
| kzalloc(sizeof(*(hotplug_slot->info)), |
| GFP_KERNEL); |
| if (!hotplug_slot->info) |
| goto error_hpslot; |
| hotplug_slot_info = hotplug_slot->info; |
| hotplug_slot->name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL); |
| |
| if (!hotplug_slot->name) |
| goto error_info; |
| |
| slot->ctrl = ctrl; |
| slot->bus = ctrl->bus; |
| slot->device = slot_device; |
| slot->number = slot_number; |
| dbg("slot->number = %d\n", slot->number); |
| |
| slot_entry = get_SMBIOS_entry(smbios_start, smbios_table, 9, |
| slot_entry); |
| |
| while (slot_entry && (readw(slot_entry + SMBIOS_SLOT_NUMBER) != |
| slot->number)) { |
| slot_entry = get_SMBIOS_entry(smbios_start, |
| smbios_table, 9, slot_entry); |
| } |
| |
| slot->p_sm_slot = slot_entry; |
| |
| init_timer(&slot->task_event); |
| slot->task_event.expires = jiffies + 5 * HZ; |
| slot->task_event.function = cpqhp_pushbutton_thread; |
| |
| //FIXME: these capabilities aren't used but if they are |
| // they need to be correctly implemented |
| slot->capabilities |= PCISLOT_REPLACE_SUPPORTED; |
| slot->capabilities |= PCISLOT_INTERLOCK_SUPPORTED; |
| |
| if (is_slot64bit(slot)) |
| slot->capabilities |= PCISLOT_64_BIT_SUPPORTED; |
| if (is_slot66mhz(slot)) |
| slot->capabilities |= PCISLOT_66_MHZ_SUPPORTED; |
| if (ctrl->speed == PCI_SPEED_66MHz) |
| slot->capabilities |= PCISLOT_66_MHZ_OPERATION; |
| |
| ctrl_slot = |
| slot_device - (readb(ctrl->hpc_reg + SLOT_MASK) >> 4); |
| |
| // Check presence |
| slot->capabilities |= |
| ((((~tempdword) >> 23) | |
| ((~tempdword) >> 15)) >> ctrl_slot) & 0x02; |
| // Check the switch state |
| slot->capabilities |= |
| ((~tempdword & 0xFF) >> ctrl_slot) & 0x01; |
| // Check the slot enable |
| slot->capabilities |= |
| ((read_slot_enable(ctrl) << 2) >> ctrl_slot) & 0x04; |
| |
| /* register this slot with the hotplug pci core */ |
| hotplug_slot->release = &release_slot; |
| hotplug_slot->private = slot; |
| make_slot_name(hotplug_slot->name, SLOT_NAME_SIZE, slot); |
| hotplug_slot->ops = &cpqphp_hotplug_slot_ops; |
| |
| hotplug_slot_info->power_status = get_slot_enabled(ctrl, slot); |
| hotplug_slot_info->attention_status = |
| cpq_get_attention_status(ctrl, slot); |
| hotplug_slot_info->latch_status = |
| cpq_get_latch_status(ctrl, slot); |
| hotplug_slot_info->adapter_status = |
| get_presence_status(ctrl, slot); |
| |
| dbg("registering bus %d, dev %d, number %d, " |
| "ctrl->slot_device_offset %d, slot %d\n", |
| slot->bus, slot->device, |
| slot->number, ctrl->slot_device_offset, |
| slot_number); |
| result = pci_hp_register(hotplug_slot); |
| if (result) { |
| err("pci_hp_register failed with error %d\n", result); |
| goto error_name; |
| } |
| |
| slot->next = ctrl->slot; |
| ctrl->slot = slot; |
| |
| number_of_slots--; |
| slot_device++; |
| slot_number++; |
| } |
| |
| return 0; |
| error_name: |
| kfree(hotplug_slot->name); |
| error_info: |
| kfree(hotplug_slot_info); |
| error_hpslot: |
| kfree(hotplug_slot); |
| error_slot: |
| kfree(slot); |
| error: |
| return result; |
| } |
| |
| static int ctrl_slot_cleanup (struct controller * ctrl) |
| { |
| struct slot *old_slot, *next_slot; |
| |
| old_slot = ctrl->slot; |
| ctrl->slot = NULL; |
| |
| while (old_slot) { |
| /* memory will be freed by the release_slot callback */ |
| next_slot = old_slot->next; |
| pci_hp_deregister (old_slot->hotplug_slot); |
| old_slot = next_slot; |
| } |
| |
| cpqhp_remove_debugfs_files(ctrl); |
| |
| //Free IRQ associated with hot plug device |
| free_irq(ctrl->interrupt, ctrl); |
| //Unmap the memory |
| iounmap(ctrl->hpc_reg); |
| //Finally reclaim PCI mem |
| release_mem_region(pci_resource_start(ctrl->pci_dev, 0), |
| pci_resource_len(ctrl->pci_dev, 0)); |
| |
| return(0); |
| } |
| |
| |
| //============================================================================ |
| // function: get_slot_mapping |
| // |
| // Description: Attempts to determine a logical slot mapping for a PCI |
| // device. Won't work for more than one PCI-PCI bridge |
| // in a slot. |
| // |
| // Input: u8 bus_num - bus number of PCI device |
| // u8 dev_num - device number of PCI device |
| // u8 *slot - Pointer to u8 where slot number will |
| // be returned |
| // |
| // Output: SUCCESS or FAILURE |
| //============================================================================= |
| static int |
| get_slot_mapping(struct pci_bus *bus, u8 bus_num, u8 dev_num, u8 *slot) |
| { |
| struct irq_routing_table *PCIIRQRoutingInfoLength; |
| u32 work; |
| long len; |
| long loop; |
| |
| u8 tbus, tdevice, tslot, bridgeSlot; |
| |
| dbg("%s: %p, %d, %d, %p\n", __FUNCTION__, bus, bus_num, dev_num, slot); |
| |
| bridgeSlot = 0xFF; |
| |
| PCIIRQRoutingInfoLength = pcibios_get_irq_routing_table(); |
| if (!PCIIRQRoutingInfoLength) |
| return -1; |
| |
| len = (PCIIRQRoutingInfoLength->size - |
| sizeof(struct irq_routing_table)) / sizeof(struct irq_info); |
| // Make sure I got at least one entry |
| if (len == 0) { |
| kfree(PCIIRQRoutingInfoLength); |
| return -1; |
| } |
| |
| for (loop = 0; loop < len; ++loop) { |
| tbus = PCIIRQRoutingInfoLength->slots[loop].bus; |
| tdevice = PCIIRQRoutingInfoLength->slots[loop].devfn >> 3; |
| tslot = PCIIRQRoutingInfoLength->slots[loop].slot; |
| |
| if ((tbus == bus_num) && (tdevice == dev_num)) { |
| *slot = tslot; |
| kfree(PCIIRQRoutingInfoLength); |
| return 0; |
| } else { |
| /* Did not get a match on the target PCI device. Check |
| * if the current IRQ table entry is a PCI-to-PCI bridge |
| * device. If so, and it's secondary bus matches the |
| * bus number for the target device, I need to save the |
| * bridge's slot number. If I can not find an entry for |
| * the target device, I will have to assume it's on the |
| * other side of the bridge, and assign it the bridge's |
| * slot. */ |
| bus->number = tbus; |
| pci_bus_read_config_dword(bus, PCI_DEVFN(tdevice, 0), |
| PCI_REVISION_ID, &work); |
| |
| if ((work >> 8) == PCI_TO_PCI_BRIDGE_CLASS) { |
| pci_bus_read_config_dword(bus, |
| PCI_DEVFN(tdevice, 0), |
| PCI_PRIMARY_BUS, &work); |
| // See if bridge's secondary bus matches target bus. |
| if (((work >> 8) & 0x000000FF) == (long) bus_num) { |
| bridgeSlot = tslot; |
| } |
| } |
| } |
| |
| } |
| |
| // If we got here, we didn't find an entry in the IRQ mapping table |
| // for the target PCI device. If we did determine that the target |
| // device is on the other side of a PCI-to-PCI bridge, return the |
| // slot number for the bridge. |
| if (bridgeSlot != 0xFF) { |
| *slot = bridgeSlot; |
| kfree(PCIIRQRoutingInfoLength); |
| return 0; |
| } |
| kfree(PCIIRQRoutingInfoLength); |
| // Couldn't find an entry in the routing table for this PCI device |
| return -1; |
| } |
| |
| |
| /** |
| * cpqhp_set_attention_status - Turns the Amber LED for a slot on or off |
| * |
| */ |
| static int |
| cpqhp_set_attention_status(struct controller *ctrl, struct pci_func *func, |
| u32 status) |
| { |
| u8 hp_slot; |
| |
| if (func == NULL) |
| return(1); |
| |
| hp_slot = func->device - ctrl->slot_device_offset; |
| |
| // Wait for exclusive access to hardware |
| mutex_lock(&ctrl->crit_sect); |
| |
| if (status == 1) { |
| amber_LED_on (ctrl, hp_slot); |
| } else if (status == 0) { |
| amber_LED_off (ctrl, hp_slot); |
| } else { |
| // Done with exclusive hardware access |
| mutex_unlock(&ctrl->crit_sect); |
| return(1); |
| } |
| |
| set_SOGO(ctrl); |
| |
| // Wait for SOBS to be unset |
| wait_for_ctrl_irq (ctrl); |
| |
| // Done with exclusive hardware access |
| mutex_unlock(&ctrl->crit_sect); |
| |
| return(0); |
| } |
| |
| |
| /** |
| * set_attention_status - Turns the Amber LED for a slot on or off |
| * |
| */ |
| static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status) |
| { |
| struct pci_func *slot_func; |
| struct slot *slot = hotplug_slot->private; |
| struct controller *ctrl = slot->ctrl; |
| u8 bus; |
| u8 devfn; |
| u8 device; |
| u8 function; |
| |
| dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| |
| if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1) |
| return -ENODEV; |
| |
| device = devfn >> 3; |
| function = devfn & 0x7; |
| dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function); |
| |
| slot_func = cpqhp_slot_find(bus, device, function); |
| if (!slot_func) |
| return -ENODEV; |
| |
| return cpqhp_set_attention_status(ctrl, slot_func, status); |
| } |
| |
| |
| static int process_SI(struct hotplug_slot *hotplug_slot) |
| { |
| struct pci_func *slot_func; |
| struct slot *slot = hotplug_slot->private; |
| struct controller *ctrl = slot->ctrl; |
| u8 bus; |
| u8 devfn; |
| u8 device; |
| u8 function; |
| |
| dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| |
| if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1) |
| return -ENODEV; |
| |
| device = devfn >> 3; |
| function = devfn & 0x7; |
| dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function); |
| |
| slot_func = cpqhp_slot_find(bus, device, function); |
| if (!slot_func) |
| return -ENODEV; |
| |
| slot_func->bus = bus; |
| slot_func->device = device; |
| slot_func->function = function; |
| slot_func->configured = 0; |
| dbg("board_added(%p, %p)\n", slot_func, ctrl); |
| return cpqhp_process_SI(ctrl, slot_func); |
| } |
| |
| |
| static int process_SS(struct hotplug_slot *hotplug_slot) |
| { |
| struct pci_func *slot_func; |
| struct slot *slot = hotplug_slot->private; |
| struct controller *ctrl = slot->ctrl; |
| u8 bus; |
| u8 devfn; |
| u8 device; |
| u8 function; |
| |
| dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| |
| if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1) |
| return -ENODEV; |
| |
| device = devfn >> 3; |
| function = devfn & 0x7; |
| dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function); |
| |
| slot_func = cpqhp_slot_find(bus, device, function); |
| if (!slot_func) |
| return -ENODEV; |
| |
| dbg("In %s, slot_func = %p, ctrl = %p\n", __FUNCTION__, slot_func, ctrl); |
| return cpqhp_process_SS(ctrl, slot_func); |
| } |
| |
| |
| static int hardware_test(struct hotplug_slot *hotplug_slot, u32 value) |
| { |
| struct slot *slot = hotplug_slot->private; |
| struct controller *ctrl = slot->ctrl; |
| |
| dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| |
| return cpqhp_hardware_test(ctrl, value); |
| } |
| |
| |
| static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value) |
| { |
| struct slot *slot = hotplug_slot->private; |
| struct controller *ctrl = slot->ctrl; |
| |
| dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| |
| *value = get_slot_enabled(ctrl, slot); |
| return 0; |
| } |
| |
| static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value) |
| { |
| struct slot *slot = hotplug_slot->private; |
| struct controller *ctrl = slot->ctrl; |
| |
| dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| |
| *value = cpq_get_attention_status(ctrl, slot); |
| return 0; |
| } |
| |
| static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value) |
| { |
| struct slot *slot = hotplug_slot->private; |
| struct controller *ctrl = slot->ctrl; |
| |
| dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| |
| *value = cpq_get_latch_status(ctrl, slot); |
| |
| return 0; |
| } |
| |
| static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value) |
| { |
| struct slot *slot = hotplug_slot->private; |
| struct controller *ctrl = slot->ctrl; |
| |
| dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| |
| *value = get_presence_status(ctrl, slot); |
| |
| return 0; |
| } |
| |
| static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) |
| { |
| struct slot *slot = hotplug_slot->private; |
| struct controller *ctrl = slot->ctrl; |
| |
| dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| |
| *value = ctrl->speed_capability; |
| |
| return 0; |
| } |
| |
| static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) |
| { |
| struct slot *slot = hotplug_slot->private; |
| struct controller *ctrl = slot->ctrl; |
| |
| dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| |
| *value = ctrl->speed; |
| |
| return 0; |
| } |
| |
| static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| { |
| u8 num_of_slots = 0; |
| u8 hp_slot = 0; |
| u8 device; |
| u8 rev; |
| u8 bus_cap; |
| u16 temp_word; |
| u16 vendor_id; |
| u16 subsystem_vid; |
| u16 subsystem_deviceid; |
| u32 rc; |
| struct controller *ctrl; |
| struct pci_func *func; |
| int err; |
| |
| err = pci_enable_device(pdev); |
| if (err) { |
| printk(KERN_ERR MY_NAME ": cannot enable PCI device %s (%d)\n", |
| pci_name(pdev), err); |
| return err; |
| } |
| |
| // Need to read VID early b/c it's used to differentiate CPQ and INTC discovery |
| rc = pci_read_config_word(pdev, PCI_VENDOR_ID, &vendor_id); |
| if (rc || ((vendor_id != PCI_VENDOR_ID_COMPAQ) && (vendor_id != PCI_VENDOR_ID_INTEL))) { |
| err(msg_HPC_non_compaq_or_intel); |
| rc = -ENODEV; |
| goto err_disable_device; |
| } |
| dbg("Vendor ID: %x\n", vendor_id); |
| |
| rc = pci_read_config_byte(pdev, PCI_REVISION_ID, &rev); |
| dbg("revision: %d\n", rev); |
| if (rc || ((vendor_id == PCI_VENDOR_ID_COMPAQ) && (!rev))) { |
| err(msg_HPC_rev_error); |
| rc = -ENODEV; |
| goto err_disable_device; |
| } |
| |
| /* Check for the proper subsytem ID's |
| * Intel uses a different SSID programming model than Compaq. |
| * For Intel, each SSID bit identifies a PHP capability. |
| * Also Intel HPC's may have RID=0. |
| */ |
| if ((rev > 2) || (vendor_id == PCI_VENDOR_ID_INTEL)) { |
| // TODO: This code can be made to support non-Compaq or Intel subsystem IDs |
| rc = pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vid); |
| if (rc) { |
| err("%s : pci_read_config_word failed\n", __FUNCTION__); |
| goto err_disable_device; |
| } |
| dbg("Subsystem Vendor ID: %x\n", subsystem_vid); |
| if ((subsystem_vid != PCI_VENDOR_ID_COMPAQ) && (subsystem_vid != PCI_VENDOR_ID_INTEL)) { |
| err(msg_HPC_non_compaq_or_intel); |
| rc = -ENODEV; |
| goto err_disable_device; |
| } |
| |
| ctrl = kzalloc(sizeof(struct controller), GFP_KERNEL); |
| if (!ctrl) { |
| err("%s : out of memory\n", __FUNCTION__); |
| rc = -ENOMEM; |
| goto err_disable_device; |
| } |
| |
| rc = pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &subsystem_deviceid); |
| if (rc) { |
| err("%s : pci_read_config_word failed\n", __FUNCTION__); |
| goto err_free_ctrl; |
| } |
| |
| info("Hot Plug Subsystem Device ID: %x\n", subsystem_deviceid); |
| |
| /* Set Vendor ID, so it can be accessed later from other functions */ |
| ctrl->vendor_id = vendor_id; |
| |
| switch (subsystem_vid) { |
| case PCI_VENDOR_ID_COMPAQ: |
| if (rev >= 0x13) { /* CIOBX */ |
| ctrl->push_flag = 1; |
| ctrl->slot_switch_type = 1; |
| ctrl->push_button = 1; |
| ctrl->pci_config_space = 1; |
| ctrl->defeature_PHP = 1; |
| ctrl->pcix_support = 1; |
| ctrl->pcix_speed_capability = 1; |
| pci_read_config_byte(pdev, 0x41, &bus_cap); |
| if (bus_cap & 0x80) { |
| dbg("bus max supports 133MHz PCI-X\n"); |
| ctrl->speed_capability = PCI_SPEED_133MHz_PCIX; |
| break; |
| } |
| if (bus_cap & 0x40) { |
| dbg("bus max supports 100MHz PCI-X\n"); |
| ctrl->speed_capability = PCI_SPEED_100MHz_PCIX; |
| break; |
| } |
| if (bus_cap & 20) { |
| dbg("bus max supports 66MHz PCI-X\n"); |
| ctrl->speed_capability = PCI_SPEED_66MHz_PCIX; |
| break; |
| } |
| if (bus_cap & 10) { |
| dbg("bus max supports 66MHz PCI\n"); |
| ctrl->speed_capability = PCI_SPEED_66MHz; |
| break; |
| } |
| |
| break; |
| } |
| |
| switch (subsystem_deviceid) { |
| case PCI_SUB_HPC_ID: |
| /* Original 6500/7000 implementation */ |
| ctrl->slot_switch_type = 1; |
| ctrl->speed_capability = PCI_SPEED_33MHz; |
| ctrl->push_button = 0; |
| ctrl->pci_config_space = 1; |
| ctrl->defeature_PHP = 1; |
| ctrl->pcix_support = 0; |
| ctrl->pcix_speed_capability = 0; |
| break; |
| case PCI_SUB_HPC_ID2: |
| /* First Pushbutton implementation */ |
| ctrl->push_flag = 1; |
| ctrl->slot_switch_type = 1; |
| ctrl->speed_capability = PCI_SPEED_33MHz; |
| ctrl->push_button = 1; |
| ctrl->pci_config_space = 1; |
| ctrl->defeature_PHP = 1; |
| ctrl->pcix_support = 0; |
| ctrl->pcix_speed_capability = 0; |
| break; |
| case PCI_SUB_HPC_ID_INTC: |
| /* Third party (6500/7000) */ |
| ctrl->slot_switch_type = 1; |
| ctrl->speed_capability = PCI_SPEED_33MHz; |
| ctrl->push_button = 0; |
| ctrl->pci_config_space = 1; |
| ctrl->defeature_PHP = 1; |
| ctrl->pcix_support = 0; |
| ctrl->pcix_speed_capability = 0; |
| break; |
| case PCI_SUB_HPC_ID3: |
| /* First 66 Mhz implementation */ |
| ctrl->push_flag = 1; |
| ctrl->slot_switch_type = 1; |
| ctrl->speed_capability = PCI_SPEED_66MHz; |
| ctrl->push_button = 1; |
| ctrl->pci_config_space = 1; |
| ctrl->defeature_PHP = 1; |
| ctrl->pcix_support = 0; |
| ctrl->pcix_speed_capability = 0; |
| break; |
| case PCI_SUB_HPC_ID4: |
| /* First PCI-X implementation, 100MHz */ |
| ctrl->push_flag = 1; |
| ctrl->slot_switch_type = 1; |
| ctrl->speed_capability = PCI_SPEED_100MHz_PCIX; |
| ctrl->push_button = 1; |
| ctrl->pci_config_space = 1; |
| ctrl->defeature_PHP = 1; |
| ctrl->pcix_support = 1; |
| ctrl->pcix_speed_capability = 0; |
| break; |
| default: |
| err(msg_HPC_not_supported); |
| rc = -ENODEV; |
| goto err_free_ctrl; |
| } |
| break; |
| |
| case PCI_VENDOR_ID_INTEL: |
| /* Check for speed capability (0=33, 1=66) */ |
| if (subsystem_deviceid & 0x0001) { |
| ctrl->speed_capability = PCI_SPEED_66MHz; |
| } else { |
| ctrl->speed_capability = PCI_SPEED_33MHz; |
| } |
| |
| /* Check for push button */ |
| if (subsystem_deviceid & 0x0002) { |
| /* no push button */ |
| ctrl->push_button = 0; |
| } else { |
| /* push button supported */ |
| ctrl->push_button = 1; |
| } |
| |
| /* Check for slot switch type (0=mechanical, 1=not mechanical) */ |
| if (subsystem_deviceid & 0x0004) { |
| /* no switch */ |
| ctrl->slot_switch_type = 0; |
| } else { |
| /* switch */ |
| ctrl->slot_switch_type = 1; |
| } |
| |
| /* PHP Status (0=De-feature PHP, 1=Normal operation) */ |
| if (subsystem_deviceid & 0x0008) { |
| ctrl->defeature_PHP = 1; // PHP supported |
| } else { |
| ctrl->defeature_PHP = 0; // PHP not supported |
| } |
| |
| /* Alternate Base Address Register Interface (0=not supported, 1=supported) */ |
| if (subsystem_deviceid & 0x0010) { |
| ctrl->alternate_base_address = 1; // supported |
| } else { |
| ctrl->alternate_base_address = 0; // not supported |
| } |
| |
| /* PCI Config Space Index (0=not supported, 1=supported) */ |
| if (subsystem_deviceid & 0x0020) { |
| ctrl->pci_config_space = 1; // supported |
| } else { |
| ctrl->pci_config_space = 0; // not supported |
| } |
| |
| /* PCI-X support */ |
| if (subsystem_deviceid & 0x0080) { |
| /* PCI-X capable */ |
| ctrl->pcix_support = 1; |
| /* Frequency of operation in PCI-X mode */ |
| if (subsystem_deviceid & 0x0040) { |
| /* 133MHz PCI-X if bit 7 is 1 */ |
| ctrl->pcix_speed_capability = 1; |
| } else { |
| /* 100MHz PCI-X if bit 7 is 1 and bit 0 is 0, */ |
| /* 66MHz PCI-X if bit 7 is 1 and bit 0 is 1 */ |
| ctrl->pcix_speed_capability = 0; |
| } |
| } else { |
| /* Conventional PCI */ |
| ctrl->pcix_support = 0; |
| ctrl->pcix_speed_capability = 0; |
| } |
| break; |
| |
| default: |
| err(msg_HPC_not_supported); |
| rc = -ENODEV; |
| goto err_free_ctrl; |
| } |
| |
| } else { |
| err(msg_HPC_not_supported); |
| return -ENODEV; |
| } |
| |
| // Tell the user that we found one. |
| info("Initializing the PCI hot plug controller residing on PCI bus %d\n", |
| pdev->bus->number); |
| |
| dbg("Hotplug controller capabilities:\n"); |
| dbg(" speed_capability %d\n", ctrl->speed_capability); |
| dbg(" slot_switch_type %s\n", ctrl->slot_switch_type ? |
| "switch present" : "no switch"); |
| dbg(" defeature_PHP %s\n", ctrl->defeature_PHP ? |
| "PHP supported" : "PHP not supported"); |
| dbg(" alternate_base_address %s\n", ctrl->alternate_base_address ? |
| "supported" : "not supported"); |
| dbg(" pci_config_space %s\n", ctrl->pci_config_space ? |
| "supported" : "not supported"); |
| dbg(" pcix_speed_capability %s\n", ctrl->pcix_speed_capability ? |
| "supported" : "not supported"); |
| dbg(" pcix_support %s\n", ctrl->pcix_support ? |
| "supported" : "not supported"); |
| |
| ctrl->pci_dev = pdev; |
| pci_set_drvdata(pdev, ctrl); |
| |
| /* make our own copy of the pci bus structure, |
| * as we like tweaking it a lot */ |
| ctrl->pci_bus = kmalloc(sizeof(*ctrl->pci_bus), GFP_KERNEL); |
| if (!ctrl->pci_bus) { |
| err("out of memory\n"); |
| rc = -ENOMEM; |
| goto err_free_ctrl; |
| } |
| memcpy(ctrl->pci_bus, pdev->bus, sizeof(*ctrl->pci_bus)); |
| |
| ctrl->bus = pdev->bus->number; |
| ctrl->rev = rev; |
| dbg("bus device function rev: %d %d %d %d\n", ctrl->bus, |
| PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), ctrl->rev); |
| |
| mutex_init(&ctrl->crit_sect); |
| init_waitqueue_head(&ctrl->queue); |
| |
| /* initialize our threads if they haven't already been started up */ |
| rc = one_time_init(); |
| if (rc) { |
| goto err_free_bus; |
| } |
| |
| dbg("pdev = %p\n", pdev); |
| dbg("pci resource start %llx\n", (unsigned long long)pci_resource_start(pdev, 0)); |
| dbg("pci resource len %llx\n", (unsigned long long)pci_resource_len(pdev, 0)); |
| |
| if (!request_mem_region(pci_resource_start(pdev, 0), |
| pci_resource_len(pdev, 0), MY_NAME)) { |
| err("cannot reserve MMIO region\n"); |
| rc = -ENOMEM; |
| goto err_free_bus; |
| } |
| |
| ctrl->hpc_reg = ioremap(pci_resource_start(pdev, 0), |
| pci_resource_len(pdev, 0)); |
| if (!ctrl->hpc_reg) { |
| err("cannot remap MMIO region %llx @ %llx\n", |
| (unsigned long long)pci_resource_len(pdev, 0), |
| (unsigned long long)pci_resource_start(pdev, 0)); |
| rc = -ENODEV; |
| goto err_free_mem_region; |
| } |
| |
| // Check for 66Mhz operation |
| ctrl->speed = get_controller_speed(ctrl); |
| |
| |
| /******************************************************** |
| * |
| * Save configuration headers for this and |
| * subordinate PCI buses |
| * |
| ********************************************************/ |
| |
| // find the physical slot number of the first hot plug slot |
| |
| /* Get slot won't work for devices behind bridges, but |
| * in this case it will always be called for the "base" |
| * bus/dev/func of a slot. |
| * CS: this is leveraging the PCIIRQ routing code from the kernel |
| * (pci-pc.c: get_irq_routing_table) */ |
| rc = get_slot_mapping(ctrl->pci_bus, pdev->bus->number, |
| (readb(ctrl->hpc_reg + SLOT_MASK) >> 4), |
| &(ctrl->first_slot)); |
| dbg("get_slot_mapping: first_slot = %d, returned = %d\n", |
| ctrl->first_slot, rc); |
| if (rc) { |
| err(msg_initialization_err, rc); |
| goto err_iounmap; |
| } |
| |
| // Store PCI Config Space for all devices on this bus |
| rc = cpqhp_save_config(ctrl, ctrl->bus, readb(ctrl->hpc_reg + SLOT_MASK)); |
| if (rc) { |
| err("%s: unable to save PCI configuration data, error %d\n", |
| __FUNCTION__, rc); |
| goto err_iounmap; |
| } |
| |
| /* |
| * Get IO, memory, and IRQ resources for new devices |
| */ |
| // The next line is required for cpqhp_find_available_resources |
| ctrl->interrupt = pdev->irq; |
| if (ctrl->interrupt < 0x10) { |
| cpqhp_legacy_mode = 1; |
| dbg("System seems to be configured for Full Table Mapped MPS mode\n"); |
| } |
| |
| ctrl->cfgspc_irq = 0; |
| pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &ctrl->cfgspc_irq); |
| |
| rc = cpqhp_find_available_resources(ctrl, cpqhp_rom_start); |
| ctrl->add_support = !rc; |
| if (rc) { |
| dbg("cpqhp_find_available_resources = 0x%x\n", rc); |
| err("unable to locate PCI configuration resources for hot plug add.\n"); |
| goto err_iounmap; |
| } |
| |
| /* |
| * Finish setting up the hot plug ctrl device |
| */ |
| ctrl->slot_device_offset = readb(ctrl->hpc_reg + SLOT_MASK) >> 4; |
| dbg("NumSlots %d \n", ctrl->slot_device_offset); |
| |
| ctrl->next_event = 0; |
| |
| /* Setup the slot information structures */ |
| rc = ctrl_slot_setup(ctrl, smbios_start, smbios_table); |
| if (rc) { |
| err(msg_initialization_err, 6); |
| err("%s: unable to save PCI configuration data, error %d\n", |
| __FUNCTION__, rc); |
| goto err_iounmap; |
| } |
| |
| /* Mask all general input interrupts */ |
| writel(0xFFFFFFFFL, ctrl->hpc_reg + INT_MASK); |
| |
| /* set up the interrupt */ |
| dbg("HPC interrupt = %d \n", ctrl->interrupt); |
| if (request_irq(ctrl->interrupt, cpqhp_ctrl_intr, |
| SA_SHIRQ, MY_NAME, ctrl)) { |
| err("Can't get irq %d for the hotplug pci controller\n", |
| ctrl->interrupt); |
| rc = -ENODEV; |
| goto err_iounmap; |
| } |
| |
| /* Enable Shift Out interrupt and clear it, also enable SERR on power fault */ |
| temp_word = readw(ctrl->hpc_reg + MISC); |
| temp_word |= 0x4006; |
| writew(temp_word, ctrl->hpc_reg + MISC); |
| |
| // Changed 05/05/97 to clear all interrupts at start |
| writel(0xFFFFFFFFL, ctrl->hpc_reg + INT_INPUT_CLEAR); |
| |
| ctrl->ctrl_int_comp = readl(ctrl->hpc_reg + INT_INPUT_CLEAR); |
| |
| writel(0x0L, ctrl->hpc_reg + INT_MASK); |
| |
| if (!cpqhp_ctrl_list) { |
| cpqhp_ctrl_list = ctrl; |
| ctrl->next = NULL; |
| } else { |
| ctrl->next = cpqhp_ctrl_list; |
| cpqhp_ctrl_list = ctrl; |
| } |
| |
| // turn off empty slots here unless command line option "ON" set |
| // Wait for exclusive access to hardware |
| mutex_lock(&ctrl->crit_sect); |
| |
| num_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F; |
| |
| // find first device number for the ctrl |
| device = readb(ctrl->hpc_reg + SLOT_MASK) >> 4; |
| |
| while (num_of_slots) { |
| dbg("num_of_slots: %d\n", num_of_slots); |
| func = cpqhp_slot_find(ctrl->bus, device, 0); |
| if (!func) |
| break; |
| |
| hp_slot = func->device - ctrl->slot_device_offset; |
| dbg("hp_slot: %d\n", hp_slot); |
| |
| // We have to save the presence info for these slots |
| temp_word = ctrl->ctrl_int_comp >> 16; |
| func->presence_save = (temp_word >> hp_slot) & 0x01; |
| func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02; |
| |
| if (ctrl->ctrl_int_comp & (0x1L << hp_slot)) { |
| func->switch_save = 0; |
| } else { |
| func->switch_save = 0x10; |
| } |
| |
| if (!power_mode) { |
| if (!func->is_a_board) { |
| green_LED_off(ctrl, hp_slot); |
| slot_disable(ctrl, hp_slot); |
| } |
| } |
| |
| device++; |
| num_of_slots--; |
| } |
| |
| if (!power_mode) { |
| set_SOGO(ctrl); |
| // Wait for SOBS to be unset |
| wait_for_ctrl_irq(ctrl); |
| } |
| |
| rc = init_SERR(ctrl); |
| if (rc) { |
| err("init_SERR failed\n"); |
| mutex_unlock(&ctrl->crit_sect); |
| goto err_free_irq; |
| } |
| |
| // Done with exclusive hardware access |
| mutex_unlock(&ctrl->crit_sect); |
| |
| cpqhp_create_debugfs_files(ctrl); |
| |
| return 0; |
| |
| err_free_irq: |
| free_irq(ctrl->interrupt, ctrl); |
| err_iounmap: |
| iounmap(ctrl->hpc_reg); |
| err_free_mem_region: |
| release_mem_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); |
| err_free_bus: |
| kfree(ctrl->pci_bus); |
| err_free_ctrl: |
| kfree(ctrl); |
| err_disable_device: |
| pci_disable_device(pdev); |
| return rc; |
| } |
| |
| |
| static int one_time_init(void) |
| { |
| int loop; |
| int retval = 0; |
| |
| if (initialized) |
| return 0; |
| |
| power_mode = 0; |
| |
| retval = pci_print_IRQ_route(); |
| if (retval) |
| goto error; |
| |
| dbg("Initialize + Start the notification mechanism \n"); |
| |
| retval = cpqhp_event_start_thread(); |
| if (retval) |
| goto error; |
| |
| dbg("Initialize slot lists\n"); |
| for (loop = 0; loop < 256; loop++) { |
| cpqhp_slot_list[loop] = NULL; |
| } |
| |
| // FIXME: We also need to hook the NMI handler eventually. |
| // this also needs to be worked with Christoph |
| // register_NMI_handler(); |
| |
| // Map rom address |
| cpqhp_rom_start = ioremap(ROM_PHY_ADDR, ROM_PHY_LEN); |
| if (!cpqhp_rom_start) { |
| err ("Could not ioremap memory region for ROM\n"); |
| retval = -EIO; |
| goto error; |
| } |
| |
| /* Now, map the int15 entry point if we are on compaq specific hardware */ |
| compaq_nvram_init(cpqhp_rom_start); |
| |
| /* Map smbios table entry point structure */ |
| smbios_table = detect_SMBIOS_pointer(cpqhp_rom_start, |
| cpqhp_rom_start + ROM_PHY_LEN); |
| if (!smbios_table) { |
| err ("Could not find the SMBIOS pointer in memory\n"); |
| retval = -EIO; |
| goto error_rom_start; |
| } |
| |
| smbios_start = ioremap(readl(smbios_table + ST_ADDRESS), |
| readw(smbios_table + ST_LENGTH)); |
| if (!smbios_start) { |
| err ("Could not ioremap memory region taken from SMBIOS values\n"); |
| retval = -EIO; |
| goto error_smbios_start; |
| } |
| |
| initialized = 1; |
| |
| return retval; |
| |
| error_smbios_start: |
| iounmap(smbios_start); |
| error_rom_start: |
| iounmap(cpqhp_rom_start); |
| error: |
| return retval; |
| } |
| |
| |
| static void __exit unload_cpqphpd(void) |
| { |
| struct pci_func *next; |
| struct pci_func *TempSlot; |
| int loop; |
| u32 rc; |
| struct controller *ctrl; |
| struct controller *tctrl; |
| struct pci_resource *res; |
| struct pci_resource *tres; |
| |
| rc = compaq_nvram_store(cpqhp_rom_start); |
| |
| ctrl = cpqhp_ctrl_list; |
| |
| while (ctrl) { |
| if (ctrl->hpc_reg) { |
| u16 misc; |
| rc = read_slot_enable (ctrl); |
| |
| writeb(0, ctrl->hpc_reg + SLOT_SERR); |
| writel(0xFFFFFFC0L | ~rc, ctrl->hpc_reg + INT_MASK); |
| |
| misc = readw(ctrl->hpc_reg + MISC); |
| misc &= 0xFFFD; |
| writew(misc, ctrl->hpc_reg + MISC); |
| } |
| |
| ctrl_slot_cleanup(ctrl); |
| |
| res = ctrl->io_head; |
| while (res) { |
| tres = res; |
| res = res->next; |
| kfree(tres); |
| } |
| |
| res = ctrl->mem_head; |
| while (res) { |
| tres = res; |
| res = res->next; |
| kfree(tres); |
| } |
| |
| res = ctrl->p_mem_head; |
| while (res) { |
| tres = res; |
| res = res->next; |
| kfree(tres); |
| } |
| |
| res = ctrl->bus_head; |
| while (res) { |
| tres = res; |
| res = res->next; |
| kfree(tres); |
| } |
| |
| kfree (ctrl->pci_bus); |
| |
| tctrl = ctrl; |
| ctrl = ctrl->next; |
| kfree(tctrl); |
| } |
| |
| for (loop = 0; loop < 256; loop++) { |
| next = cpqhp_slot_list[loop]; |
| while (next != NULL) { |
| res = next->io_head; |
| while (res) { |
| tres = res; |
| res = res->next; |
| kfree(tres); |
| } |
| |
| res = next->mem_head; |
| while (res) { |
| tres = res; |
| res = res->next; |
| kfree(tres); |
| } |
| |
| res = next->p_mem_head; |
| while (res) { |
| tres = res; |
| res = res->next; |
| kfree(tres); |
| } |
| |
| res = next->bus_head; |
| while (res) { |
| tres = res; |
| res = res->next; |
| kfree(tres); |
| } |
| |
| TempSlot = next; |
| next = next->next; |
| kfree(TempSlot); |
| } |
| } |
| |
| // Stop the notification mechanism |
| if (initialized) |
| cpqhp_event_stop_thread(); |
| |
| //unmap the rom address |
| if (cpqhp_rom_start) |
| iounmap(cpqhp_rom_start); |
| if (smbios_start) |
| iounmap(smbios_start); |
| } |
| |
| |
| |
| static struct pci_device_id hpcd_pci_tbl[] = { |
| { |
| /* handle any PCI Hotplug controller */ |
| .class = ((PCI_CLASS_SYSTEM_PCI_HOTPLUG << 8) | 0x00), |
| .class_mask = ~0, |
| |
| /* no matter who makes it */ |
| .vendor = PCI_ANY_ID, |
| .device = PCI_ANY_ID, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| |
| }, { /* end: all zeroes */ } |
| }; |
| |
| MODULE_DEVICE_TABLE(pci, hpcd_pci_tbl); |
| |
| |
| |
| static struct pci_driver cpqhpc_driver = { |
| .name = "compaq_pci_hotplug", |
| .id_table = hpcd_pci_tbl, |
| .probe = cpqhpc_probe, |
| /* remove: cpqhpc_remove_one, */ |
| }; |
| |
| |
| |
| static int __init cpqhpc_init(void) |
| { |
| int result; |
| |
| cpqhp_debug = debug; |
| |
| info (DRIVER_DESC " version: " DRIVER_VERSION "\n"); |
| cpqhp_initialize_debugfs(); |
| result = pci_register_driver(&cpqhpc_driver); |
| dbg("pci_register_driver = %d\n", result); |
| return result; |
| } |
| |
| |
| static void __exit cpqhpc_cleanup(void) |
| { |
| dbg("unload_cpqphpd()\n"); |
| unload_cpqphpd(); |
| |
| dbg("pci_unregister_driver\n"); |
| pci_unregister_driver(&cpqhpc_driver); |
| cpqhp_shutdown_debugfs(); |
| } |
| |
| |
| module_init(cpqhpc_init); |
| module_exit(cpqhpc_cleanup); |
| |
| |