| /* virtpci.c |
| * |
| * Copyright © 2010 - 2013 UNISYS CORPORATION |
| * 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. |
| */ |
| |
| #define EXPORT_SYMTAB |
| |
| #include <linux/kernel.h> |
| #ifdef CONFIG_MODVERSIONS |
| #include <config/modversions.h> |
| #endif |
| #include "uniklog.h" |
| #include "diagnostics/appos_subsystems.h" |
| #include "uisutils.h" |
| #include "commontypes.h" |
| #include "vbuschannel.h" |
| #include "vbushelper.h" |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/pci.h> |
| #include <linux/device.h> |
| #include <linux/list.h> |
| #include <linux/slab.h> |
| #include <linux/mod_devicetable.h> |
| #include <linux/proc_fs.h> |
| #include <linux/if_ether.h> |
| #include <linux/version.h> |
| #include "version.h" |
| #include "guestlinuxdebug.h" |
| |
| struct driver_private { |
| struct kobject kobj; |
| struct klist klist_devices; |
| struct klist_node knode_bus; |
| struct module_kobject *mkobj; |
| struct device_driver *driver; |
| }; |
| #define to_driver(obj) container_of(obj, struct driver_private, kobj) |
| |
| /* bus_id went away in 2.6.30 - the size was 20 bytes, so we'll define |
| * it ourselves, and a macro to make getting the field a bit simpler. |
| */ |
| #ifndef BUS_ID_SIZE |
| #define BUS_ID_SIZE 20 |
| #endif |
| |
| #define BUS_ID(x) dev_name(x) |
| |
| #include "virtpci.h" |
| |
| /* this is shorter than using __FILE__ (full path name) in |
| * debug/info/error messages |
| */ |
| #define CURRENT_FILE_PC VIRT_PCI_PC_virtpci_c |
| #define __MYFILE__ "virtpci.c" |
| |
| #define VIRTPCI_VERSION "01.00" |
| |
| /*****************************************************/ |
| /* Forward declarations */ |
| /*****************************************************/ |
| |
| static int delete_vbus_device(struct device *vbus, void *data); |
| static int match_busid(struct device *dev, void *data); |
| static void virtpci_bus_release(struct device *dev); |
| static void virtpci_device_release(struct device *dev); |
| static int virtpci_device_add(struct device *parentbus, int devtype, |
| struct add_virt_guestpart *addparams, |
| struct scsi_adap_info *scsi, |
| struct net_adap_info *net); |
| static int virtpci_device_del(struct device *parentbus, int devtype, |
| struct vhba_wwnn *wwnn, unsigned char macaddr[]); |
| static int virtpci_device_serverdown(struct device *parentbus, int devtype, |
| struct vhba_wwnn *wwnn, |
| unsigned char macaddr[]); |
| static int virtpci_device_serverup(struct device *parentbus, int devtype, |
| struct vhba_wwnn *wwnn, |
| unsigned char macaddr[]); |
| static ssize_t virtpci_driver_attr_show(struct kobject *kobj, |
| struct attribute *attr, char *buf); |
| static ssize_t virtpci_driver_attr_store(struct kobject *kobj, |
| struct attribute *attr, |
| const char *buf, size_t count); |
| static int virtpci_bus_match(struct device *dev, struct device_driver *drv); |
| static int virtpci_uevent(struct device *dev, struct kobj_uevent_env *env); |
| static int virtpci_device_suspend(struct device *dev, pm_message_t state); |
| static int virtpci_device_resume(struct device *dev); |
| static int virtpci_device_probe(struct device *dev); |
| static int virtpci_device_remove(struct device *dev); |
| static ssize_t virt_proc_write(struct file *file, const char __user *buffer, |
| size_t count, loff_t *ppos); |
| static ssize_t info_proc_read(struct file *file, char __user *buf, |
| size_t len, loff_t *offset); |
| |
| static const struct file_operations proc_virt_fops = { |
| .write = virt_proc_write, |
| }; |
| |
| static const struct file_operations proc_info_fops = { |
| .read = info_proc_read, |
| }; |
| |
| /*****************************************************/ |
| /* Globals */ |
| /*****************************************************/ |
| |
| /* methods in bus_type struct allow the bus code to serve as an |
| * intermediary between the device core and individual device core and |
| * individual drivers |
| */ |
| static struct bus_type virtpci_bus_type = { |
| .name = "uisvirtpci", |
| .match = virtpci_bus_match, |
| .uevent = virtpci_uevent, |
| .suspend = virtpci_device_suspend, |
| .resume = virtpci_device_resume, |
| }; |
| |
| static struct device virtpci_rootbus_device = { |
| .init_name = "vbusroot", /* root bus */ |
| .release = virtpci_bus_release |
| }; |
| |
| /* filled in with info about parent chipset driver when we register with it */ |
| static ULTRA_VBUS_DEVICEINFO Chipset_DriverInfo; |
| |
| static const struct sysfs_ops virtpci_driver_sysfs_ops = { |
| .show = virtpci_driver_attr_show, |
| .store = virtpci_driver_attr_store, |
| }; |
| |
| static struct kobj_type virtpci_driver_kobj_type = { |
| .sysfs_ops = &virtpci_driver_sysfs_ops, |
| }; |
| |
| static struct virtpci_dev *VpcidevListHead; |
| static DEFINE_RWLOCK(VpcidevListLock); |
| |
| /* filled in with info about this driver, wrt it servicing client busses */ |
| static ULTRA_VBUS_DEVICEINFO Bus_DriverInfo; |
| |
| /* virtpci_proc_dir_entry is used to create the proc entry directory |
| * for virtpci |
| */ |
| static struct proc_dir_entry *virtpci_proc_dir; |
| /* virt_proc_entry is used to tell virtpci to add/delete vhbas/vnics/vbuses */ |
| static struct proc_dir_entry *virt_proc_entry; |
| /* info_proc_entry is used to tell virtpci to display current info |
| * kept in the driver |
| */ |
| static struct proc_dir_entry *info_proc_entry; |
| #define VIRT_PROC_ENTRY_FN "virt" |
| #define INFO_PROC_ENTRY_FN "info" |
| #define DIR_PROC_ENTRY "virtpci" |
| |
| struct virtpci_busdev { |
| struct device virtpci_bus_device; |
| }; |
| |
| /*****************************************************/ |
| /* Local functions */ |
| /*****************************************************/ |
| |
| static inline int WAIT_FOR_IO_CHANNEL(ULTRA_IO_CHANNEL_PROTOCOL *chanptr) |
| { |
| int count = 120; |
| while (count > 0) { |
| |
| if (ULTRA_CHANNEL_SERVER_READY(&chanptr->ChannelHeader)) |
| return 1; |
| UIS_THREAD_WAIT_SEC(1); |
| count--; |
| } |
| return 0; |
| } |
| |
| /* Write the contents of <info> to the ULTRA_VBUS_CHANNEL_PROTOCOL.ChpInfo. */ |
| static int write_vbus_chpInfo(ULTRA_VBUS_CHANNEL_PROTOCOL *chan, |
| ULTRA_VBUS_DEVICEINFO *info) |
| { |
| int off; |
| if (!chan) { |
| LOGERR("vbus channel not present"); |
| return -1; |
| } |
| off = sizeof(ULTRA_CHANNEL_PROTOCOL) + chan->HdrInfo.chpInfoByteOffset; |
| if (chan->HdrInfo.chpInfoByteOffset == 0) { |
| LOGERR("vbus channel not used, because chpInfoByteOffset == 0"); |
| return -1; |
| } |
| memcpy(((U8 *) (chan)) + off, info, sizeof(*info)); |
| return 0; |
| } |
| |
| /* Write the contents of <info> to the ULTRA_VBUS_CHANNEL_PROTOCOL.BusInfo. */ |
| static int write_vbus_busInfo(ULTRA_VBUS_CHANNEL_PROTOCOL *chan, |
| ULTRA_VBUS_DEVICEINFO *info) |
| { |
| int off; |
| if (!chan) { |
| LOGERR("vbus channel not present"); |
| return -1; |
| } |
| off = sizeof(ULTRA_CHANNEL_PROTOCOL) + chan->HdrInfo.busInfoByteOffset; |
| if (chan->HdrInfo.busInfoByteOffset == 0) { |
| LOGERR("vbus channel not used, because busInfoByteOffset == 0"); |
| return -1; |
| } |
| memcpy(((U8 *) (chan)) + off, info, sizeof(*info)); |
| return 0; |
| } |
| |
| /* Write the contents of <info> to the |
| * ULTRA_VBUS_CHANNEL_PROTOCOL.DevInfo[<devix>]. |
| */ |
| static int |
| write_vbus_devInfo(ULTRA_VBUS_CHANNEL_PROTOCOL *chan, |
| ULTRA_VBUS_DEVICEINFO *info, int devix) |
| { |
| int off; |
| if (!chan) { |
| LOGERR("vbus channel not present"); |
| return -1; |
| } |
| off = |
| (sizeof(ULTRA_CHANNEL_PROTOCOL) + |
| chan->HdrInfo.devInfoByteOffset) + |
| (chan->HdrInfo.deviceInfoStructBytes * devix); |
| if (chan->HdrInfo.devInfoByteOffset == 0) { |
| LOGERR("vbus channel not used, because devInfoByteOffset == 0"); |
| return -1; |
| } |
| memcpy(((U8 *) (chan)) + off, info, sizeof(*info)); |
| return 0; |
| } |
| |
| /* adds a vbus |
| * returns 0 failure, 1 success, |
| */ |
| static int add_vbus(struct add_vbus_guestpart *addparams) |
| { |
| int ret; |
| struct device *vbus; |
| vbus = kmalloc(sizeof(struct device), GFP_ATOMIC); |
| |
| POSTCODE_LINUX_2(VPCI_CREATE_ENTRY_PC, POSTCODE_SEVERITY_INFO); |
| if (!vbus) |
| return 0; |
| |
| memset(vbus, 0, sizeof(struct device)); |
| dev_set_name(vbus, "vbus%d", addparams->busNo); |
| vbus->release = virtpci_bus_release; |
| vbus->parent = &virtpci_rootbus_device; /* root bus is parent */ |
| vbus->bus = &virtpci_bus_type; /* bus type */ |
| vbus->platform_data = addparams->chanptr; |
| |
| /* register a virt bus device - |
| * this bus shows up under /sys/devices with .name value |
| * "virtpci%d" any devices added to this bus then show up under |
| * /sys/devices/virtpci0 |
| */ |
| ret = device_register(vbus); |
| if (ret) { |
| LOGERR("device_register FAILED:%d\n", ret); |
| POSTCODE_LINUX_2(VPCI_CREATE_FAILURE_PC, POSTCODE_SEVERITY_ERR); |
| return 0; |
| } |
| write_vbus_chpInfo(vbus->platform_data /* chanptr */ , |
| &Chipset_DriverInfo); |
| write_vbus_busInfo(vbus->platform_data /* chanptr */ , &Bus_DriverInfo); |
| LOGINF("Added vbus %d; device %s created successfully\n", |
| addparams->busNo, BUS_ID(vbus)); |
| POSTCODE_LINUX_2(VPCI_CREATE_EXIT_PC, POSTCODE_SEVERITY_INFO); |
| return 1; |
| } |
| |
| /* for CHANSOCK wwwnn/max are AUTO-GENERATED; for normal channels, |
| * wwnn/max are in the channel header. |
| */ |
| #define GET_SCSIADAPINFO_FROM_CHANPTR(chanptr) { \ |
| scsi.wwnn = ((ULTRA_IO_CHANNEL_PROTOCOL *) chanptr)->vhba.wwnn; \ |
| scsi.max = ((ULTRA_IO_CHANNEL_PROTOCOL *) chanptr)->vhba.max; \ |
| } |
| |
| /* find bus device with the busid that matches - match_busid matches bus_id */ |
| #define GET_BUS_DEV(busno) { \ |
| sprintf(busid, "vbus%d", busno); \ |
| vbus = bus_find_device(&virtpci_bus_type, NULL, \ |
| (void *)busid, match_busid); \ |
| if (!vbus) { \ |
| LOGERR("**** FAILED to find vbus %s\n", busid); \ |
| return 0; \ |
| } \ |
| } |
| |
| /* adds a vhba |
| * returns 0 failure, 1 success, |
| */ |
| static int add_vhba(struct add_virt_guestpart *addparams) |
| { |
| int i; |
| struct scsi_adap_info scsi; |
| struct device *vbus; |
| unsigned char busid[BUS_ID_SIZE]; |
| |
| POSTCODE_LINUX_2(VPCI_CREATE_ENTRY_PC, POSTCODE_SEVERITY_INFO); |
| if (!WAIT_FOR_IO_CHANNEL |
| ((ULTRA_IO_CHANNEL_PROTOCOL *) addparams->chanptr)) { |
| LOGERR("Timed out. Channel not ready\n"); |
| POSTCODE_LINUX_2(VPCI_CREATE_FAILURE_PC, POSTCODE_SEVERITY_ERR); |
| return 0; |
| } |
| |
| GET_SCSIADAPINFO_FROM_CHANPTR(addparams->chanptr); |
| |
| GET_BUS_DEV(addparams->busNo); |
| |
| LOGINF("Adding vhba wwnn:%x:%x config:%d-%d-%d-%d chanptr:%p\n", |
| scsi.wwnn.wwnn1, scsi.wwnn.wwnn2, |
| scsi.max.max_channel, scsi.max.max_id, scsi.max.max_lun, |
| scsi.max.cmd_per_lun, addparams->chanptr); |
| i = virtpci_device_add(vbus, VIRTHBA_TYPE, addparams, &scsi, NULL); |
| if (i) { |
| LOGINF("Added vhba wwnn:%x:%x chanptr:%p\n", scsi.wwnn.wwnn1, |
| scsi.wwnn.wwnn2, addparams->chanptr); |
| POSTCODE_LINUX_3(VPCI_CREATE_EXIT_PC, i, |
| POSTCODE_SEVERITY_INFO); |
| } |
| return i; |
| |
| } |
| |
| /* for CHANSOCK macaddr is AUTO-GENERATED; for normal channels, |
| * macaddr is in the channel header. |
| */ |
| #define GET_NETADAPINFO_FROM_CHANPTR(chanptr) { \ |
| memcpy(net.mac_addr, ((ULTRA_IO_CHANNEL_PROTOCOL *) chanptr)->vnic.macaddr, MAX_MACADDR_LEN); \ |
| net.num_rcv_bufs = ((ULTRA_IO_CHANNEL_PROTOCOL *) chanptr)->vnic.num_rcv_bufs; \ |
| net.mtu = ((ULTRA_IO_CHANNEL_PROTOCOL *) chanptr)->vnic.mtu; \ |
| net.zoneGuid = ((ULTRA_IO_CHANNEL_PROTOCOL *) chanptr)->vnic.zoneGuid; \ |
| } |
| |
| /* adds a vnic |
| * returns 0 failure, 1 success, |
| */ |
| static int |
| add_vnic(struct add_virt_guestpart *addparams) |
| { |
| int i; |
| struct net_adap_info net; |
| struct device *vbus; |
| unsigned char busid[BUS_ID_SIZE]; |
| |
| POSTCODE_LINUX_2(VPCI_CREATE_ENTRY_PC, POSTCODE_SEVERITY_INFO); |
| if (!WAIT_FOR_IO_CHANNEL |
| ((ULTRA_IO_CHANNEL_PROTOCOL *) addparams->chanptr)) { |
| LOGERR("Timed out, channel not ready\n"); |
| POSTCODE_LINUX_2(VPCI_CREATE_FAILURE_PC, POSTCODE_SEVERITY_ERR); |
| return 0; |
| } |
| |
| GET_NETADAPINFO_FROM_CHANPTR(addparams->chanptr); |
| |
| GET_BUS_DEV(addparams->busNo); |
| |
| LOGINF("Adding vnic macaddr:%02x:%02x:%02x:%02x:%02x:%02x rcvbufs:%d mtu:%d chanptr:%p{%-8.8lx-%-4.4x-%-4.4x-%-2.2x%-2.2x%-2.2x%-2.2x%-2.2x%-2.2x%-2.2x%-2.2x}\n", |
| net.mac_addr[0], net.mac_addr[1], net.mac_addr[2], net.mac_addr[3], |
| net.mac_addr[4], net.mac_addr[5], net.num_rcv_bufs, net.mtu, |
| addparams->chanptr, (ulong) net.zoneGuid.data1, net.zoneGuid.data2, |
| net.zoneGuid.data3, net.zoneGuid.data4[0], net.zoneGuid.data4[1], |
| net.zoneGuid.data4[2], net.zoneGuid.data4[3], |
| net.zoneGuid.data4[4], net.zoneGuid.data4[5], |
| net.zoneGuid.data4[6], net.zoneGuid.data4[7]); |
| i = virtpci_device_add(vbus, VIRTNIC_TYPE, addparams, NULL, &net); |
| if (i) { |
| LOGINF("Added vnic macaddr:%02x:%02x:%02x:%02x:%02x:%02x\n", |
| net.mac_addr[0], net.mac_addr[1], net.mac_addr[2], |
| net.mac_addr[3], net.mac_addr[4], net.mac_addr[5]); |
| POSTCODE_LINUX_3(VPCI_CREATE_EXIT_PC, i, |
| POSTCODE_SEVERITY_INFO); |
| return 1; |
| } |
| return 0; |
| } |
| |
| /* delete vbus |
| * returns 0 failure, 1 success, |
| */ |
| static int |
| delete_vbus(struct del_vbus_guestpart *delparams) |
| { |
| struct device *vbus; |
| unsigned char busid[BUS_ID_SIZE]; |
| |
| GET_BUS_DEV(delparams->busNo); |
| /* ensure that bus has no devices? -- TBD */ |
| LOGINF("Deleting %s\n", BUS_ID(vbus)); |
| if (delete_vbus_device(vbus, NULL)) |
| return 0; /* failure */ |
| LOGINF("Deleted vbus %d\n", delparams->busNo); |
| return 1; |
| } |
| |
| static int |
| delete_vbus_device(struct device *vbus, void *data) |
| { |
| int checkforroot = (data != NULL); |
| struct device *pDev = &virtpci_rootbus_device; |
| |
| if ((checkforroot) && match_busid(vbus, (void *) BUS_ID(pDev))) { |
| /* skip it - don't delete root bus */ |
| LOGINF("skipping root bus\n"); |
| return 0; /* pretend no error */ |
| } |
| LOGINF("Calling unregister for %s\n", BUS_ID(vbus)); |
| device_unregister(vbus); |
| kfree(vbus); |
| LOGINF("VBus unregister and freed\n"); |
| return 0; /* no error */ |
| } |
| |
| /* pause vhba |
| * returns 0 failure, 1 success, |
| */ |
| static int pause_vhba(struct pause_virt_guestpart *pauseparams) |
| { |
| int i; |
| struct scsi_adap_info scsi; |
| |
| GET_SCSIADAPINFO_FROM_CHANPTR(pauseparams->chanptr); |
| |
| LOGINF("Pausing vhba wwnn:%x:%x\n", scsi.wwnn.wwnn1, scsi.wwnn.wwnn2); |
| i = virtpci_device_serverdown(NULL /*no parent bus */ , VIRTHBA_TYPE, |
| &scsi.wwnn, NULL); |
| if (i) |
| LOGINF("Paused vhba wwnn:%x:%x\n", scsi.wwnn.wwnn1, |
| scsi.wwnn.wwnn2); |
| return i; |
| } |
| |
| /* pause vnic |
| * returns 0 failure, 1 success, |
| */ |
| static int pause_vnic(struct pause_virt_guestpart *pauseparams) |
| { |
| int i; |
| struct net_adap_info net; |
| |
| GET_NETADAPINFO_FROM_CHANPTR(pauseparams->chanptr); |
| |
| LOGINF("Pausing vnic macaddr:%02x:%02x:%02x:%02x:%02x:%02x\n", |
| net.mac_addr[0], net.mac_addr[1], net.mac_addr[2], |
| net.mac_addr[3], net.mac_addr[4], net.mac_addr[5]); |
| i = virtpci_device_serverdown(NULL /*no parent bus */ , VIRTNIC_TYPE, |
| NULL, net.mac_addr); |
| if (i) { |
| LOGINF(" Paused vnic macaddr:%02x:%02x:%02x:%02x:%02x:%02x\n", |
| net.mac_addr[0], net.mac_addr[1], net.mac_addr[2], |
| net.mac_addr[3], net.mac_addr[4], net.mac_addr[5]); |
| } |
| return i; |
| } |
| |
| /* resume vhba |
| * returns 0 failure, 1 success, |
| */ |
| static int resume_vhba(struct resume_virt_guestpart *resumeparams) |
| { |
| int i; |
| struct scsi_adap_info scsi; |
| |
| GET_SCSIADAPINFO_FROM_CHANPTR(resumeparams->chanptr); |
| |
| LOGINF("Resuming vhba wwnn:%x:%x\n", scsi.wwnn.wwnn1, scsi.wwnn.wwnn2); |
| i = virtpci_device_serverup(NULL /*no parent bus */ , VIRTHBA_TYPE, |
| &scsi.wwnn, NULL); |
| if (i) |
| LOGINF("Resumed vhba wwnn:%x:%x\n", scsi.wwnn.wwnn1, |
| scsi.wwnn.wwnn2); |
| return i; |
| } |
| |
| /* resume vnic |
| * returns 0 failure, 1 success, |
| */ |
| static int |
| resume_vnic(struct resume_virt_guestpart *resumeparams) |
| { |
| int i; |
| struct net_adap_info net; |
| |
| GET_NETADAPINFO_FROM_CHANPTR(resumeparams->chanptr); |
| |
| LOGINF("Resuming vnic macaddr:%02x:%02x:%02x:%02x:%02x:%02x\n", |
| net.mac_addr[0], net.mac_addr[1], net.mac_addr[2], |
| net.mac_addr[3], net.mac_addr[4], net.mac_addr[5]); |
| i = virtpci_device_serverup(NULL /*no parent bus */ , VIRTNIC_TYPE, |
| NULL, net.mac_addr); |
| if (i) { |
| LOGINF(" Resumed vnic macaddr:%02x:%02x:%02x:%02x:%02x:%02x\n", |
| net.mac_addr[0], net.mac_addr[1], net.mac_addr[2], |
| net.mac_addr[3], net.mac_addr[4], net.mac_addr[5]); |
| } |
| return i; |
| } |
| |
| /* delete vhba |
| * returns 0 failure, 1 success, |
| */ |
| static int delete_vhba(struct del_virt_guestpart *delparams) |
| { |
| int i; |
| struct scsi_adap_info scsi; |
| |
| GET_SCSIADAPINFO_FROM_CHANPTR(delparams->chanptr); |
| |
| LOGINF("Deleting vhba wwnn:%x:%x\n", scsi.wwnn.wwnn1, scsi.wwnn.wwnn2); |
| i = virtpci_device_del(NULL /*no parent bus */ , VIRTHBA_TYPE, |
| &scsi.wwnn, NULL); |
| if (i) { |
| LOGINF("Deleted vhba wwnn:%x:%x\n", scsi.wwnn.wwnn1, |
| scsi.wwnn.wwnn2); |
| return 1; |
| } |
| return 0; |
| } |
| |
| /* deletes a vnic |
| * returns 0 failure, 1 success, |
| */ |
| static int delete_vnic(struct del_virt_guestpart *delparams) |
| { |
| int i; |
| struct net_adap_info net; |
| |
| GET_NETADAPINFO_FROM_CHANPTR(delparams->chanptr); |
| |
| LOGINF("Deleting vnic macaddr:%02x:%02x:%02x:%02x:%02x:%02x\n", |
| net.mac_addr[0], net.mac_addr[1], net.mac_addr[2], |
| net.mac_addr[3], net.mac_addr[4], net.mac_addr[5]); |
| i = virtpci_device_del(NULL /*no parent bus */ , VIRTNIC_TYPE, NULL, |
| net.mac_addr); |
| if (i) { |
| LOGINF("Deleted vnic macaddr:%02x:%02x:%02x:%02x:%02x:%02x\n", |
| net.mac_addr[0], net.mac_addr[1], net.mac_addr[2], |
| net.mac_addr[3], net.mac_addr[4], net.mac_addr[5]); |
| } |
| return i; |
| } |
| |
| #define DELETE_ONE_VPCIDEV(vpcidev) { \ |
| LOGINF("calling device_unregister:%p\n", &vpcidev->generic_dev); \ |
| device_unregister(&vpcidev->generic_dev); \ |
| LOGINF("Deleted %p\n", vpcidev); \ |
| kfree(vpcidev); \ |
| } |
| |
| /* deletes all vhbas and vnics |
| * returns 0 failure, 1 success, |
| */ |
| static void delete_all(void) |
| { |
| int count = 0; |
| unsigned long flags; |
| struct virtpci_dev *tmpvpcidev, *nextvpcidev; |
| |
| /* delete the entire vhba/vnic list in one shot */ |
| write_lock_irqsave(&VpcidevListLock, flags); |
| tmpvpcidev = VpcidevListHead; |
| VpcidevListHead = NULL; |
| write_unlock_irqrestore(&VpcidevListLock, flags); |
| |
| /* delete one vhba/vnic at a time */ |
| while (tmpvpcidev) { |
| nextvpcidev = tmpvpcidev->next; |
| /* delete the vhba/vnic at tmpvpcidev */ |
| DELETE_ONE_VPCIDEV(tmpvpcidev); |
| tmpvpcidev = nextvpcidev; |
| count++; |
| } |
| LOGINF("Deleted %d vhbas/vnics.\n", count); |
| |
| /* now delete each vbus */ |
| if (bus_for_each_dev |
| (&virtpci_bus_type, NULL, (void *) 1, delete_vbus_device)) |
| LOGERR("delete of all vbus failed\n"); |
| } |
| |
| /* deletes all vnics or vhbas |
| * returns 0 failure, 1 success, |
| */ |
| static int delete_all_virt(VIRTPCI_DEV_TYPE devtype, struct del_vbus_guestpart *delparams) |
| { |
| int i; |
| unsigned char busid[BUS_ID_SIZE]; |
| struct device *vbus; |
| |
| GET_BUS_DEV(delparams->busNo); |
| |
| if ((devtype != VIRTHBA_TYPE) && (devtype != VIRTNIC_TYPE)) { |
| LOGERR("**** FAILED to delete all devices; devtype:%d not vhba:%d or vnic:%d\n", |
| devtype, VIRTHBA_TYPE, VIRTNIC_TYPE); |
| return 0; |
| } |
| |
| LOGINF("Deleting all %s in vbus %s\n", |
| devtype == VIRTHBA_TYPE ? "vhbas" : "vnics", busid); |
| /* delete all vhbas/vnics */ |
| i = virtpci_device_del(vbus, devtype, NULL, NULL); |
| if (i > 0) |
| LOGINF("Deleted %d %s\n", i, |
| devtype == VIRTHBA_TYPE ? "vhbas" : "vnics"); |
| return 1; |
| } |
| |
| static int virtpci_ctrlchan_func(struct guest_msgs *msg) |
| { |
| switch (msg->msgtype) { |
| case GUEST_ADD_VBUS: |
| return add_vbus(&msg->add_vbus); |
| case GUEST_ADD_VHBA: |
| return add_vhba(&msg->add_vhba); |
| case GUEST_ADD_VNIC: |
| return add_vnic(&msg->add_vnic); |
| case GUEST_DEL_VBUS: |
| return delete_vbus(&msg->del_vbus); |
| case GUEST_DEL_VHBA: |
| return delete_vhba(&msg->del_vhba); |
| case GUEST_DEL_VNIC: |
| return delete_vnic(&msg->del_vhba); |
| case GUEST_DEL_ALL_VHBAS: |
| return delete_all_virt(VIRTHBA_TYPE, &msg->del_all_vhbas); |
| case GUEST_DEL_ALL_VNICS: |
| return delete_all_virt(VIRTNIC_TYPE, &msg->del_all_vnics); |
| case GUEST_DEL_ALL_VBUSES: |
| delete_all(); |
| return 1; |
| case GUEST_PAUSE_VHBA: |
| return pause_vhba(&msg->pause_vhba); |
| case GUEST_PAUSE_VNIC: |
| return pause_vnic(&msg->pause_vnic); |
| case GUEST_RESUME_VHBA: |
| return resume_vhba(&msg->resume_vhba); |
| case GUEST_RESUME_VNIC: |
| return resume_vnic(&msg->resume_vnic); |
| default: |
| LOGERR("invalid message type %d.\n", msg->msgtype); |
| return 0; |
| } |
| } |
| |
| /* same as driver_helper in bus.c linux */ |
| static int match_busid(struct device *dev, void *data) |
| { |
| const char *name = data; |
| |
| if (strcmp(name, BUS_ID(dev)) == 0) |
| return 1; |
| return 0; |
| } |
| |
| /*****************************************************/ |
| /* Bus functions */ |
| /*****************************************************/ |
| |
| const struct pci_device_id * |
| virtpci_match_device(const struct pci_device_id *ids, |
| const struct virtpci_dev *dev) |
| { |
| while (ids->vendor || ids->subvendor || ids->class_mask) { |
| DBGINF("ids->vendor:%x dev->vendor:%x ids->device:%x dev->device:%x\n", |
| ids->vendor, dev->vendor, ids->device, dev->device); |
| |
| if ((ids->vendor == dev->vendor) |
| && (ids->device == dev->device)) |
| return ids; |
| |
| ids++; |
| } |
| return NULL; |
| } |
| |
| /* NOTE: !!!!!! This function is called when a new device is added |
| * for this bus. Or, it is called for existing devices when a new |
| * driver is added for this bus. It returns nonzero if a given device |
| * can be handled by the given driver. |
| */ |
| static int virtpci_bus_match(struct device *dev, struct device_driver *drv) |
| { |
| struct virtpci_dev *virtpcidev = device_to_virtpci_dev(dev); |
| struct virtpci_driver *virtpcidrv = driver_to_virtpci_driver(drv); |
| int match = 0; |
| |
| DBGINF("In virtpci_bus_match dev->bus_id:%s drv->name:%s\n", |
| dev->bus_id, drv->name); |
| |
| /* check ids list for a match */ |
| if (virtpci_match_device(virtpcidrv->id_table, virtpcidev)) |
| match = 1; |
| |
| DBGINF("returning match:%d\n", match); |
| return match; /* 0 - no match; 1 - yes it matches */ |
| } |
| |
| static int virtpci_uevent(struct device *dev, struct kobj_uevent_env *env) |
| { |
| DBGINF("In virtpci_hotplug\n"); |
| /* add variables to the environment prior to the generation of |
| * hotplug events to user space |
| */ |
| if (add_uevent_var(env, "VIRTPCI_VERSION=%s", VIRTPCI_VERSION)) |
| return -ENOMEM; |
| return 0; |
| } |
| |
| static int virtpci_device_suspend(struct device *dev, pm_message_t state) |
| { |
| DBGINF("In virtpci_device_suspend -NYI ****\n"); |
| return 0; |
| } |
| |
| static int virtpci_device_resume(struct device *dev) |
| { |
| DBGINF("In virtpci_device_resume -NYI ****\n"); |
| return 0; |
| } |
| |
| /* For a child device just created on a client bus, fill in |
| * information about the driver that is controlling this device into |
| * the the appropriate slot within the vbus channel of the bus |
| * instance. |
| */ |
| static void fix_vbus_devInfo(struct device *dev, int devNo, int devType, |
| struct virtpci_driver *virtpcidrv) |
| { |
| struct device *vbus; |
| void *pChan; |
| ULTRA_VBUS_DEVICEINFO devInfo; |
| const char *stype; |
| |
| if (!dev) { |
| LOGERR("%s dev is NULL", __func__); |
| return; |
| } |
| if (!virtpcidrv) { |
| LOGERR("%s driver is NULL", __func__); |
| return; |
| } |
| vbus = dev->parent; |
| if (!vbus) { |
| LOGERR("%s dev has no parent bus", __func__); |
| return; |
| } |
| pChan = vbus->platform_data; |
| if (!pChan) { |
| LOGERR("%s dev bus has no channel", __func__); |
| return; |
| } |
| switch (devType) { |
| case PCI_DEVICE_ID_VIRTHBA: |
| stype = "vHBA"; |
| break; |
| case PCI_DEVICE_ID_VIRTNIC: |
| stype = "vNIC"; |
| break; |
| default: |
| stype = "unknown"; |
| break; |
| } |
| BusDeviceInfo_Init(&devInfo, stype, |
| virtpcidrv->name, |
| virtpcidrv->version, |
| virtpcidrv->vertag, |
| virtpcidrv->build_date, virtpcidrv->build_time); |
| write_vbus_devInfo(pChan, &devInfo, devNo); |
| |
| /* Re-write bus+chipset info, because it is possible that this |
| * was previously written by our good counterpart, visorbus. |
| */ |
| write_vbus_chpInfo(pChan, &Chipset_DriverInfo); |
| write_vbus_busInfo(pChan, &Bus_DriverInfo); |
| } |
| |
| /* This function is called to query the existence of a specific device |
| * and whether this driver can work with it. It should return -ENODEV |
| * in case of failure. |
| */ |
| static int virtpci_device_probe(struct device *dev) |
| { |
| struct virtpci_dev *virtpcidev = device_to_virtpci_dev(dev); |
| struct virtpci_driver *virtpcidrv = |
| driver_to_virtpci_driver(dev->driver); |
| const struct pci_device_id *id; |
| int error = 0; |
| |
| LOGINF("In virtpci_device_probe dev:%p virtpcidev:%p virtpcidrv:%p\n", |
| dev, virtpcidev, virtpcidrv); /* VERBOSE/DEBUG ? */ |
| POSTCODE_LINUX_2(VPCI_PROBE_ENTRY_PC, POSTCODE_SEVERITY_INFO); |
| /* static match and static probe vs dynamic match & dynamic |
| * probe - do we care?. |
| */ |
| if (!virtpcidrv->id_table) |
| return -ENODEV; |
| |
| id = virtpci_match_device(virtpcidrv->id_table, virtpcidev); |
| if (!id) |
| return -ENODEV; |
| |
| /* increment reference count */ |
| get_device(dev); |
| |
| /* if virtpcidev is not already claimed & probe function is |
| * valid, probe it |
| */ |
| if (!virtpcidev->mydriver && virtpcidrv->probe) { |
| /* call the probe function - virthba or virtnic probe |
| * is what it should be |
| */ |
| error = virtpcidrv->probe(virtpcidev, id); |
| if (!error) { |
| fix_vbus_devInfo(dev, virtpcidev->deviceNo, |
| virtpcidev->device, virtpcidrv); |
| virtpcidev->mydriver = virtpcidrv; |
| POSTCODE_LINUX_2(VPCI_PROBE_EXIT_PC, |
| POSTCODE_SEVERITY_INFO); |
| } else |
| put_device(dev); |
| } |
| POSTCODE_LINUX_2(VPCI_PROBE_FAILURE_PC, POSTCODE_SEVERITY_ERR); |
| return error; /* -ENODEV for probe failure */ |
| } |
| |
| static int virtpci_device_remove(struct device *dev_) |
| { |
| /* dev_ passed in is the HBA device which we called |
| * generic_dev in our virtpcidev struct |
| */ |
| struct virtpci_dev *virtpcidev = device_to_virtpci_dev(dev_); |
| struct virtpci_driver *virtpcidrv = virtpcidev->mydriver; |
| LOGINF("In virtpci_device_remove bus_id:%s dev_:%p virtpcidev:%p dev->driver:%p drivername:%s\n", |
| BUS_ID(dev_), dev_, virtpcidev, dev_->driver, |
| dev_->driver->name); /* VERBOSE/DEBUG */ |
| if (virtpcidrv) { |
| /* TEMP: assuming we have only one such driver for now */ |
| if (virtpcidrv->remove) |
| virtpcidrv->remove(virtpcidev); |
| virtpcidev->mydriver = NULL; |
| } |
| |
| DBGINF("calling putdevice\n"); |
| put_device(dev_); |
| |
| DBGINF("Leaving\n"); |
| return 0; |
| } |
| |
| /*****************************************************/ |
| /* Bus functions */ |
| /*****************************************************/ |
| |
| static void virtpci_bus_release(struct device *dev) |
| { |
| /* this function is called when the last reference to the |
| * device is removed |
| */ |
| DBGINF("In virtpci_bus_release\n"); |
| /* what else is supposed to happen here? */ |
| } |
| |
| /*****************************************************/ |
| /* Adapter functions */ |
| /*****************************************************/ |
| |
| static int virtpci_device_add(struct device *parentbus, int devtype, |
| struct add_virt_guestpart *addparams, |
| struct scsi_adap_info *scsi, /* NULL for VNIC add */ |
| struct net_adap_info *net /* NULL for VHBA add */) |
| { |
| struct virtpci_dev *virtpcidev = NULL; |
| struct virtpci_dev *tmpvpcidev = NULL, *prev; |
| unsigned long flags; |
| int ret; |
| ULTRA_IO_CHANNEL_PROTOCOL *pIoChan = NULL; |
| struct device *pDev; |
| |
| LOGINF("virtpci_device_add parentbus:%p chanptr:%p\n", parentbus, |
| addparams->chanptr); |
| |
| POSTCODE_LINUX_2(VPCI_CREATE_ENTRY_PC, POSTCODE_SEVERITY_INFO); |
| |
| if ((devtype != VIRTHBA_TYPE) && (devtype != VIRTNIC_TYPE)) { |
| LOGERR("**** FAILED to add device; devtype:%d not vhba:%d or vnic:%d\n", |
| devtype, VIRTHBA_TYPE, VIRTNIC_TYPE); |
| POSTCODE_LINUX_3(VPCI_CREATE_FAILURE_PC, devtype, |
| POSTCODE_SEVERITY_ERR); |
| return 0; |
| } |
| |
| /* add a Virtual Device */ |
| virtpcidev = kmalloc(sizeof(struct virtpci_dev), GFP_ATOMIC); |
| if (virtpcidev == NULL) { |
| LOGERR("can't add device - malloc FALLED\n"); |
| POSTCODE_LINUX_2(MALLOC_FAILURE_PC, POSTCODE_SEVERITY_ERR); |
| return 0; |
| } |
| |
| memset(virtpcidev, 0, sizeof(struct virtpci_dev)); |
| |
| /* initialize stuff unique to virtpci_dev struct */ |
| virtpcidev->devtype = devtype; |
| if (devtype == VIRTHBA_TYPE) { |
| virtpcidev->device = PCI_DEVICE_ID_VIRTHBA; |
| virtpcidev->scsi = *scsi; |
| } else { |
| virtpcidev->device = PCI_DEVICE_ID_VIRTNIC; |
| virtpcidev->net = *net; |
| } |
| virtpcidev->vendor = PCI_VENDOR_ID_UNISYS; |
| virtpcidev->busNo = addparams->busNo; |
| virtpcidev->deviceNo = addparams->deviceNo; |
| |
| virtpcidev->queueinfo.chan = addparams->chanptr; |
| virtpcidev->queueinfo.send_int_if_needed = NULL; |
| |
| /* Set up safe queue... */ |
| pIoChan = (ULTRA_IO_CHANNEL_PROTOCOL *) virtpcidev->queueinfo.chan; |
| |
| virtpcidev->intr = addparams->intr; |
| |
| /* initialize stuff in the device portion of the struct */ |
| virtpcidev->generic_dev.bus = &virtpci_bus_type; |
| virtpcidev->generic_dev.parent = parentbus; |
| virtpcidev->generic_dev.release = virtpci_device_release; |
| |
| dev_set_name(&virtpcidev->generic_dev, "%x:%x", |
| addparams->busNo, addparams->deviceNo); |
| |
| /* add the vhba/vnic to virtpci device list - but check for |
| * duplicate wwnn/macaddr first |
| */ |
| write_lock_irqsave(&VpcidevListLock, flags); |
| for (tmpvpcidev = VpcidevListHead; tmpvpcidev; |
| tmpvpcidev = tmpvpcidev->next) { |
| if (devtype == VIRTHBA_TYPE) { |
| if ((tmpvpcidev->scsi.wwnn.wwnn1 == scsi->wwnn.wwnn1) && |
| (tmpvpcidev->scsi.wwnn.wwnn2 == scsi->wwnn.wwnn2)) { |
| /* duplicate - already have vpcidev |
| with this wwnn */ |
| break; |
| } |
| } else |
| if (memcmp |
| (tmpvpcidev->net.mac_addr, net->mac_addr, |
| MAX_MACADDR_LEN) == 0) { |
| /* duplicate - already have vnic with this wwnn */ |
| break; |
| } |
| } |
| if (tmpvpcidev) { |
| /* found a vhba/vnic already in the list with same |
| * wwnn or macaddr - reject add |
| */ |
| write_unlock_irqrestore(&VpcidevListLock, flags); |
| kfree(virtpcidev); |
| LOGERR("**** FAILED vhba/vnic already exists in the list\n"); |
| POSTCODE_LINUX_2(VPCI_CREATE_FAILURE_PC, POSTCODE_SEVERITY_ERR); |
| return 0; |
| } |
| |
| /* add it at the head */ |
| if (!VpcidevListHead) |
| VpcidevListHead = virtpcidev; |
| else { |
| /* insert virtpcidev at the head of our linked list of |
| * vpcidevs |
| */ |
| virtpcidev->next = VpcidevListHead; |
| VpcidevListHead = virtpcidev; |
| } |
| |
| write_unlock_irqrestore(&VpcidevListLock, flags); |
| |
| /* Must transition channel to ATTACHED state BEFORE |
| * registering the device, because polling of the channel |
| * queues can begin at any time after device_register(). |
| */ |
| pDev = &virtpcidev->generic_dev; |
| ULTRA_CHANNEL_CLIENT_TRANSITION(addparams->chanptr, |
| BUS_ID(pDev), |
| CliStateOS, CHANNELCLI_ATTACHED, NULL); |
| |
| /* don't register until device has been added to |
| * list. Otherwise, a device_unregister from this function can |
| * cause a "scheduling while atomic". |
| */ |
| DBGINF("registering device:%p with bus_id:%s\n", |
| &virtpcidev->generic_dev, virtpcidev->generic_dev.bus_id); |
| ret = device_register(&virtpcidev->generic_dev); |
| /* NOTE: THIS IS CALLING HOTPLUG virtpci_hotplug!!! |
| * This call to device_register results in virtpci_bus_match |
| * being called !!!!! And, if match returns success, then |
| * virtpcidev->generic_dev.driver is setup to core_driver, |
| * i.e., virtpci and the probe function |
| * virtpcidev->generic_dev.driver->probe is called which |
| * results in virtpci_device_probe being called. And if |
| * virtpci_device_probe is successful |
| */ |
| if (ret) { |
| LOGERR("device_register returned %d\n", ret); |
| pDev = &virtpcidev->generic_dev; |
| ULTRA_CHANNEL_CLIENT_TRANSITION(addparams->chanptr, |
| BUS_ID(pDev), |
| CliStateOS, |
| CHANNELCLI_DETACHED, NULL); |
| /* remove virtpcidev, the one we just added, from the list */ |
| write_lock_irqsave(&VpcidevListLock, flags); |
| for (tmpvpcidev = VpcidevListHead, prev = NULL; |
| tmpvpcidev; |
| prev = tmpvpcidev, tmpvpcidev = tmpvpcidev->next) { |
| if (tmpvpcidev == virtpcidev) { |
| if (prev) |
| prev->next = tmpvpcidev->next; |
| else |
| VpcidevListHead = tmpvpcidev->next; |
| break; |
| } |
| } |
| write_unlock_irqrestore(&VpcidevListLock, flags); |
| kfree(virtpcidev); |
| return 0; |
| } |
| |
| LOGINF("Added %s:%d:%d &virtpcidev->generic_dev:%p\n", |
| (devtype == VIRTHBA_TYPE) ? "virthba" : "virtnic", |
| addparams->busNo, addparams->deviceNo, &virtpcidev->generic_dev); |
| POSTCODE_LINUX_2(VPCI_CREATE_EXIT_PC, POSTCODE_SEVERITY_INFO); |
| return 1; |
| } |
| |
| static int virtpci_device_serverdown(struct device *parentbus, |
| int devtype, |
| struct vhba_wwnn *wwnn, |
| unsigned char macaddr[]) |
| { |
| int pausethisone = 0; |
| bool found = false; |
| struct virtpci_dev *tmpvpcidev, *prevvpcidev; |
| struct virtpci_driver *vpcidriver; |
| unsigned long flags; |
| int rc = 0; |
| |
| if ((devtype != VIRTHBA_TYPE) && (devtype != VIRTNIC_TYPE)) { |
| LOGERR("**** FAILED to pause device; devtype:%d not vhba:%d or vnic:%d\n", |
| devtype, VIRTHBA_TYPE, VIRTNIC_TYPE); |
| return 0; |
| } |
| |
| /* find the vhba or vnic in virtpci device list */ |
| write_lock_irqsave(&VpcidevListLock, flags); |
| |
| for (tmpvpcidev = VpcidevListHead, prevvpcidev = NULL; |
| (tmpvpcidev && !found); |
| prevvpcidev = tmpvpcidev, tmpvpcidev = tmpvpcidev->next) { |
| if (tmpvpcidev->devtype != devtype) |
| continue; |
| |
| if (devtype == VIRTHBA_TYPE) { |
| pausethisone = |
| ((tmpvpcidev->scsi.wwnn.wwnn1 == wwnn->wwnn1) && |
| (tmpvpcidev->scsi.wwnn.wwnn2 == wwnn->wwnn2)); |
| /* devtype is vhba, we're pausing vhba whose |
| * wwnn matches the current device's wwnn |
| */ |
| } else { /* VIRTNIC_TYPE */ |
| pausethisone = |
| memcmp(tmpvpcidev->net.mac_addr, macaddr, |
| MAX_MACADDR_LEN) == 0; |
| /* devtype is vnic, we're pausing vnic whose |
| * macaddr matches the current device's macaddr */ |
| } |
| |
| if (!pausethisone) |
| continue; |
| |
| found = true; |
| vpcidriver = tmpvpcidev->mydriver; |
| rc = vpcidriver->suspend(tmpvpcidev, 0); |
| } |
| write_unlock_irqrestore(&VpcidevListLock, flags); |
| |
| if (!found) { |
| LOGERR("**** FAILED to find vhba/vnic in the list\n"); |
| return 0; |
| } |
| |
| return rc; |
| } |
| |
| static int virtpci_device_serverup(struct device *parentbus, |
| int devtype, |
| struct vhba_wwnn *wwnn, |
| unsigned char macaddr[]) |
| { |
| int resumethisone = 0; |
| bool found = false; |
| struct virtpci_dev *tmpvpcidev, *prevvpcidev; |
| struct virtpci_driver *vpcidriver; |
| unsigned long flags; |
| int rc = 0; |
| |
| if ((devtype != VIRTHBA_TYPE) && (devtype != VIRTNIC_TYPE)) { |
| LOGERR("**** FAILED to resume device; devtype:%d not vhba:%d or vnic:%d\n", |
| devtype, VIRTHBA_TYPE, VIRTNIC_TYPE); |
| return 0; |
| } |
| |
| /* find the vhba or vnic in virtpci device list */ |
| write_lock_irqsave(&VpcidevListLock, flags); |
| |
| for (tmpvpcidev = VpcidevListHead, prevvpcidev = NULL; |
| (tmpvpcidev && !found); |
| prevvpcidev = tmpvpcidev, tmpvpcidev = tmpvpcidev->next) { |
| if (tmpvpcidev->devtype != devtype) |
| continue; |
| |
| if (devtype == VIRTHBA_TYPE) { |
| resumethisone = |
| ((tmpvpcidev->scsi.wwnn.wwnn1 == wwnn->wwnn1) && |
| (tmpvpcidev->scsi.wwnn.wwnn2 == wwnn->wwnn2)); |
| /* devtype is vhba, we're resuming vhba whose |
| * wwnn matches the current device's wwnn */ |
| } else { /* VIRTNIC_TYPE */ |
| resumethisone = |
| memcmp(tmpvpcidev->net.mac_addr, macaddr, |
| MAX_MACADDR_LEN) == 0; |
| /* devtype is vnic, we're resuming vnic whose |
| * macaddr matches the current device's macaddr */ |
| } |
| |
| if (!resumethisone) |
| continue; |
| |
| found = true; |
| vpcidriver = tmpvpcidev->mydriver; |
| /* This should be done at BUS resume time, but an |
| * existing problem prevents us from ever getting a bus |
| * resume... This hack would fail to work should we |
| * ever have a bus that contains NO devices, since we |
| * would never even get here in that case. |
| */ |
| fix_vbus_devInfo(&tmpvpcidev->generic_dev, tmpvpcidev->deviceNo, |
| tmpvpcidev->device, vpcidriver); |
| rc = vpcidriver->resume(tmpvpcidev); |
| } |
| |
| write_unlock_irqrestore(&VpcidevListLock, flags); |
| |
| if (!found) { |
| LOGERR("**** FAILED to find vhba/vnic in the list\n"); |
| return 0; |
| } |
| |
| return rc; |
| } |
| |
| static int virtpci_device_del(struct device *parentbus, |
| int devtype, struct vhba_wwnn *wwnn, |
| unsigned char macaddr[]) |
| { |
| int count = 0, all = 0, delthisone; |
| struct virtpci_dev *tmpvpcidev, *prevvpcidev, *dellist = NULL; |
| unsigned long flags; |
| |
| #define DEL_CONTINUE { \ |
| prevvpcidev = tmpvpcidev;\ |
| tmpvpcidev = tmpvpcidev->next;\ |
| continue; \ |
| } |
| |
| if ((devtype != VIRTHBA_TYPE) && (devtype != VIRTNIC_TYPE)) { |
| LOGERR("**** FAILED to delete device; devtype:%d not vhba:%d or vnic:%d\n", |
| devtype, VIRTHBA_TYPE, VIRTNIC_TYPE); |
| return 0; |
| } |
| |
| /* see if we are to delete all - NOTE: all implies we have a |
| * valid parentbus |
| */ |
| all = ((devtype == VIRTHBA_TYPE) && (wwnn == NULL)) || |
| ((devtype == VIRTNIC_TYPE) && (macaddr == NULL)); |
| |
| /* find all the vhba or vnic or both in virtpci device list |
| * keep list of ones we are deleting so we can call |
| * device_unregister after we release the lock; otherwise we |
| * encounter "schedule while atomic" |
| */ |
| write_lock_irqsave(&VpcidevListLock, flags); |
| for (tmpvpcidev = VpcidevListHead, prevvpcidev = NULL; tmpvpcidev;) { |
| if (tmpvpcidev->devtype != devtype) |
| DEL_CONTINUE; |
| |
| if (all) { |
| delthisone = |
| (tmpvpcidev->generic_dev.parent == parentbus); |
| /* we're deleting all vhbas or vnics on the |
| * specified parent bus |
| */ |
| } else if (devtype == VIRTHBA_TYPE) { |
| delthisone = |
| ((tmpvpcidev->scsi.wwnn.wwnn1 == wwnn->wwnn1) && |
| (tmpvpcidev->scsi.wwnn.wwnn2 == wwnn->wwnn2)); |
| /* devtype is vhba, we're deleting vhba whose |
| * wwnn matches the current device's wwnn |
| */ |
| } else { /* VIRTNIC_TYPE */ |
| delthisone = |
| memcmp(tmpvpcidev->net.mac_addr, macaddr, |
| MAX_MACADDR_LEN) == 0; |
| /* devtype is vnic, we're deleting vnic whose |
| * macaddr matches the current device's macaddr |
| */ |
| } |
| |
| if (!delthisone) |
| DEL_CONTINUE; |
| |
| /* take vhba/vnic out of the list */ |
| if (prevvpcidev) |
| /* not at head */ |
| prevvpcidev->next = tmpvpcidev->next; |
| else |
| VpcidevListHead = tmpvpcidev->next; |
| |
| /* add it to our deletelist */ |
| tmpvpcidev->next = dellist; |
| dellist = tmpvpcidev; |
| |
| count++; |
| if (!all) |
| break; /* done */ |
| /* going to top of loop again - set tmpvpcidev to next |
| * one we're to process |
| */ |
| if (prevvpcidev) |
| tmpvpcidev = prevvpcidev->next; |
| else |
| tmpvpcidev = VpcidevListHead; |
| } |
| write_unlock_irqrestore(&VpcidevListLock, flags); |
| |
| if (!all && (count == 0)) { |
| LOGERR("**** FAILED to find vhba/vnic in the list\n"); |
| return 0; |
| } |
| |
| /* now delete each one from delete list */ |
| while (dellist) { |
| /* save next */ |
| tmpvpcidev = dellist->next; |
| /* delete the vhba/vnic at dellist */ |
| DELETE_ONE_VPCIDEV(dellist); |
| /* do next */ |
| dellist = tmpvpcidev; |
| } |
| |
| return count; |
| } |
| |
| static void virtpci_device_release(struct device *dev_) |
| { |
| /* this function is called when the last reference to the |
| * device is removed |
| */ |
| LOGINF("In virtpci_device_release:%p - NOT YET IMPLEMENTED\n", dev_); |
| } |
| |
| /*****************************************************/ |
| /* Driver functions */ |
| /*****************************************************/ |
| |
| #define kobj_to_device_driver(obj) container_of(obj, struct device_driver, kobj) |
| #define attribute_to_driver_attribute(obj) \ |
| container_of(obj, struct driver_attribute, attr) |
| |
| static ssize_t virtpci_driver_attr_show(struct kobject *kobj, |
| struct attribute *attr, |
| char *buf) |
| { |
| struct driver_attribute *dattr = attribute_to_driver_attribute(attr); |
| ssize_t ret = 0; |
| |
| struct driver_private *dprivate = to_driver(kobj); |
| struct device_driver *driver; |
| if (dprivate != NULL) |
| driver = dprivate->driver; |
| else |
| driver = NULL; |
| |
| DBGINF("In virtpci_driver_attr_show driver->name:%s\n", driver->name); |
| if (driver) { |
| if (dattr->show) |
| ret = dattr->show(driver, buf); |
| } |
| return ret; |
| } |
| |
| static ssize_t virtpci_driver_attr_store(struct kobject *kobj, |
| struct attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct driver_attribute *dattr = attribute_to_driver_attribute(attr); |
| ssize_t ret = 0; |
| |
| struct driver_private *dprivate = to_driver(kobj); |
| struct device_driver *driver; |
| if (dprivate != NULL) |
| driver = dprivate->driver; |
| else |
| driver = NULL; |
| |
| DBGINF("In virtpci_driver_attr_store driver->name:%s\n", driver->name); |
| |
| if (driver) { |
| if (dattr->store) |
| ret = dattr->store(driver, buf, count); |
| } |
| return ret; |
| } |
| |
| /* register a new virtpci driver */ |
| int virtpci_register_driver(struct virtpci_driver *drv) |
| { |
| int result = 0; |
| |
| DBGINF("In virtpci_register_driver\n"); |
| |
| if (drv->id_table == NULL) { |
| LOGERR("id_table missing\n"); |
| return 1; |
| } |
| /* initialize core driver fields needed to call driver_register */ |
| drv->core_driver.name = drv->name; /* name of driver in sysfs */ |
| drv->core_driver.bus = &virtpci_bus_type; /* type of bus this |
| * driver works with */ |
| drv->core_driver.probe = virtpci_device_probe; /* called to query the |
| * existence of a |
| * specific device and |
| * whether this driver |
| *can work with it */ |
| drv->core_driver.remove = virtpci_device_remove; /* called when the |
| * device is removed |
| * from the system */ |
| /* register with core */ |
| result = driver_register(&drv->core_driver); |
| /* calls bus_add_driver which calls driver_attach and |
| * module_add_driver |
| */ |
| if (result) |
| return result; /* failed */ |
| |
| drv->core_driver.p->kobj.ktype = &virtpci_driver_kobj_type; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(virtpci_register_driver); |
| |
| void virtpci_unregister_driver(struct virtpci_driver *drv) |
| { |
| DBGINF("In virtpci_unregister_driver drv:%p\n", drv); |
| driver_unregister(&drv->core_driver); |
| /* driver_unregister calls bus_remove_driver |
| * bus_remove_driver calls device_detach |
| * device_detach calls device_release_driver for each of the |
| * driver's devices |
| * device_release driver calls drv->remove which is |
| * virtpci_device_remove |
| * virtpci_device_remove calls virthba_remove |
| */ |
| DBGINF("Leaving\n"); |
| } |
| EXPORT_SYMBOL_GPL(virtpci_unregister_driver); |
| |
| /*****************************************************/ |
| /* proc filesystem functions */ |
| /*****************************************************/ |
| struct print_vbus_info { |
| int *length; |
| char *buf; |
| }; |
| |
| static int print_vbus(struct device *vbus, void *data) |
| { |
| struct print_vbus_info *p = (struct print_vbus_info *) data; |
| int l = *(p->length); |
| |
| *(p->length) = l + sprintf(p->buf + l, "bus_id:%s\n", dev_name(vbus)); |
| return 0; /* no error */ |
| } |
| |
| static ssize_t info_proc_read(struct file *file, char __user *buf, |
| size_t len, loff_t *offset) |
| { |
| int length = 0; |
| struct virtpci_dev *tmpvpcidev; |
| unsigned long flags; |
| struct print_vbus_info printparam; |
| char *vbuf; |
| loff_t pos = *offset; |
| |
| if (pos < 0) |
| return -EINVAL; |
| |
| if (pos > 0 || !len) |
| return 0; |
| |
| vbuf = kzalloc(len, GFP_KERNEL); |
| if (!vbuf) |
| return -ENOMEM; |
| |
| length += sprintf(vbuf + length, "CHANSOCK is not defined.\n"); |
| |
| length += sprintf(vbuf + length, "\n Virtual PCI Bus devices\n"); |
| printparam.length = &length; |
| printparam.buf = vbuf; |
| if (bus_for_each_dev(&virtpci_bus_type, NULL, |
| (void *) &printparam, print_vbus)) |
| LOGERR("delete of all vbus failed\n"); |
| |
| length += sprintf(vbuf + length, "\n Virtual PCI devices\n"); |
| read_lock_irqsave(&VpcidevListLock, flags); |
| tmpvpcidev = VpcidevListHead; |
| while (tmpvpcidev) { |
| if (tmpvpcidev->devtype == VIRTHBA_TYPE) { |
| length += sprintf(vbuf + length, "[%d:%d] VHba:%08x:%08x max-config:%d-%d-%d-%d", |
| tmpvpcidev->busNo, tmpvpcidev->deviceNo, |
| tmpvpcidev->scsi.wwnn.wwnn1, |
| tmpvpcidev->scsi.wwnn.wwnn2, |
| tmpvpcidev->scsi.max.max_channel, |
| tmpvpcidev->scsi.max.max_id, |
| tmpvpcidev->scsi.max.max_lun, |
| tmpvpcidev->scsi.max.cmd_per_lun); |
| } else { |
| length += sprintf(vbuf + length, "[%d:%d] VNic:%02x:%02x:%02x:%02x:%02x:%02x num_rcv_bufs:%d mtu:%d", |
| tmpvpcidev->busNo, tmpvpcidev->deviceNo, |
| tmpvpcidev->net.mac_addr[0], |
| tmpvpcidev->net.mac_addr[1], |
| tmpvpcidev->net.mac_addr[2], |
| tmpvpcidev->net.mac_addr[3], |
| tmpvpcidev->net.mac_addr[4], |
| tmpvpcidev->net.mac_addr[5], |
| tmpvpcidev->net.num_rcv_bufs, |
| tmpvpcidev->net.mtu); |
| } |
| length += |
| sprintf(vbuf + length, " chanptr:%p\n", |
| tmpvpcidev->queueinfo.chan); |
| tmpvpcidev = tmpvpcidev->next; |
| } |
| read_unlock_irqrestore(&VpcidevListLock, flags); |
| |
| length += |
| sprintf(vbuf + length, "\nModule build: Date:%s Time:%s\n", __DATE__, |
| __TIME__); |
| |
| length += sprintf(vbuf + length, "\n"); |
| if (copy_to_user(buf, vbuf, length)) { |
| kfree(vbuf); |
| return -EFAULT; |
| } |
| |
| kfree(vbuf); |
| *offset += length; |
| return length; |
| } |
| |
| static ssize_t virt_proc_write(struct file *file, const char __user *buffer, |
| size_t count, loff_t *ppos) |
| { |
| char buf[16]; |
| int type, i, action = 0xffff; |
| unsigned int busno, deviceno; |
| void *chanptr; |
| struct add_vbus_guestpart busaddparams; |
| struct add_virt_guestpart addparams; |
| struct del_vbus_guestpart busdelparams; |
| struct del_virt_guestpart delparams; |
| GUID dummyGuid = GUID0; |
| #ifdef STORAGE_CHANNEL |
| U64 storagechannel; |
| #endif |
| |
| #define PRINT_USAGE_RETURN {\ |
| LOGERR("usage: 0-0-<chanptr> ==> delete vhba\n"); \ |
| LOGERR("usage: 0-1-<chanptr>-<busNo>-<deviceNo> ==> add vhba\n"); \ |
| LOGERR("usage: 0-f-<busNo> ==> delete all vhbas\n"); \ |
| LOGERR("\n"); \ |
| LOGERR("usage: 1-0-<chanptr> ==> delete vnic\n"); \ |
| LOGERR("usage: 1-1-<chanptr>-<busNo>-<deviceNo> ==> add vnic\n"); \ |
| LOGERR("usage: 1-f-<busNo> ==> delete all vnics\n"); \ |
| LOGERR("\n"); \ |
| LOGERR("usage: 6-0-<busNo> ==> delete vbus\n"); \ |
| LOGERR("usage: 6-1-<busNo> ==> add vbus\n"); \ |
| LOGERR("usage: 6-f ==> delete all vbuses\n"); \ |
| LOGERR("usage: 98-<busNo>-<deviceNo> ==> INJECT Client delete vnic\n"); \ |
| LOGERR("usage: 99-<chanptr>-<busNo>-<deviceNo> ==> INJECT Client add vnic\n"); \ |
| return -EINVAL; \ |
| } |
| |
| if (count >= ARRAY_SIZE(buf)) |
| return -EINVAL; |
| |
| if (copy_from_user(buf, buffer, count)) { |
| LOGERR("copy_from_user failed.\n"); |
| return -EFAULT; |
| } |
| |
| i = sscanf(buf, "%x-%x", &type, &action); |
| if (i < 2) |
| PRINT_USAGE_RETURN; |
| |
| if (type == 0x98) { |
| /* client inject delete vnic */ |
| i = sscanf(buf, "%x-%d-%d", &type, &busno, &deviceno); |
| if (i != 3) |
| PRINT_USAGE_RETURN; |
| uislib_client_inject_del_vnic(busno, deviceno); |
| return count; /* success */ |
| } else if (type == 0x99) { |
| /* client inject add vnic */ |
| i = sscanf(buf, "%x-%p-%d-%d", &type, &chanptr, &busno, |
| &deviceno); |
| if (i != 4) |
| PRINT_USAGE_RETURN; |
| if (!uislib_client_inject_add_vnic(busno, deviceno, |
| __pa(chanptr), |
| MIN_IO_CHANNEL_SIZE, |
| 1, /* test msg */ |
| dummyGuid, /* inst guid */ |
| NULL)) { /*interrupt info */ |
| LOGERR("FAILED to inject add vnic\n"); |
| return -EFAULT; |
| } |
| return count; /* success */ |
| } |
| |
| if ((type != VIRTHBA_TYPE) && (type != VIRTNIC_TYPE) |
| && (type != VIRTBUS_TYPE)) |
| PRINT_USAGE_RETURN; |
| |
| if (type == VIRTBUS_TYPE) { |
| i = sscanf(buf, "%x-%x-%d", &type, &action, &busno); |
| switch (action) { |
| case 0: |
| /* delete vbus */ |
| if (i != 3) |
| break; |
| busdelparams.busNo = busno; |
| if (delete_vbus(&busdelparams)) |
| return count; /* success */ |
| return -EFAULT; |
| |
| case 1: |
| /* add vbus */ |
| if (i != 3) |
| break; |
| busaddparams.chanptr = NULL; /* NOT YET USED */ |
| busaddparams.busNo = busno; |
| if (add_vbus(&busaddparams)) |
| return count; /* success */ |
| return -EFAULT; |
| |
| case 0xf: |
| /* delete all vbuses and all vhbas/vnics on the buses */ |
| if (i != 2) |
| break; |
| delete_all(); |
| return count; /* success */ |
| default: |
| break; |
| } |
| PRINT_USAGE_RETURN; |
| } |
| |
| /* if (type == VIRTNIC_TYPE) or if (type == VIRTHBA_TYPE) */ |
| switch (action) { |
| case 0: |
| /* delete vhba/vnic */ |
| i = sscanf(buf, "%x-%x-%p", &type, &action, &chanptr); |
| if (i != 3) |
| break; |
| delparams.chanptr = chanptr; |
| if (type == VIRTHBA_TYPE) { |
| if (delete_vhba(&delparams)) |
| return count; /* success */ |
| } else { |
| if (delete_vnic(&delparams)) |
| return count; /* success */ |
| } |
| return -EFAULT; |
| |
| case 1: |
| /* add vhba/vnic */ |
| i = sscanf(buf, "%x-%x-%p-%d-%d", &type, &action, &chanptr, |
| &busno, &deviceno); |
| if (i != 5) |
| break; |
| addparams.chanptr = chanptr; |
| addparams.busNo = busno; |
| addparams.deviceNo = deviceno; |
| if (type == VIRTHBA_TYPE) { |
| if (add_vhba(&addparams)) |
| return count; /* success */ |
| } else { |
| if (add_vnic(&addparams)) |
| return count; /* success */ |
| } |
| return -EFAULT; |
| |
| #ifdef STORAGE_CHANNEL |
| case 2: |
| /* add vhba */ |
| i = sscanf(buf, "%x-%x-%d-%d", &type, &action, &busno, |
| &deviceno); |
| if (i != 4) |
| break; |
| storagechannel = uislib_storage_channel(0); /* Get my storage channel */ |
| /* ioremap_cache it now */ |
| addparams.chanptr = |
| (void *) ioremap_cache(storagechannel, IO_CHANNEL_SIZE); |
| if (addparams.chanptr == NULL) { |
| LOGERR("Failure to get remap storage channel.\n"); |
| return -EFAULT; |
| } |
| addparams.busNo = busno; |
| addparams.deviceNo = deviceno; |
| if (type == VIRTHBA_TYPE) { |
| if (add_vhba(&addparams)) |
| return count; /* success */ |
| } |
| return -EFAULT; |
| #endif |
| case 0xf: |
| /* delete all vhbas/vnics */ |
| i = sscanf(buf, "%x-%x-%d", &type, &action, &busno); |
| if (i != 3) |
| break; |
| busdelparams.busNo = busno; |
| delete_all_virt(type, &busdelparams); |
| return count; /* success */ |
| default: |
| break; |
| } |
| PRINT_USAGE_RETURN; |
| } |
| |
| /*****************************************************/ |
| /* Module Init & Exit functions */ |
| /*****************************************************/ |
| |
| static int __init virtpci_mod_init(void) |
| { |
| int ret; |
| |
| |
| LOGINF("Module build: Date:%s Time:%s...\n", __DATE__, __TIME__); |
| |
| POSTCODE_LINUX_2(VPCI_CREATE_ENTRY_PC, POSTCODE_SEVERITY_INFO); |
| |
| ret = bus_register(&virtpci_bus_type); |
| /* creates /sys/bus/uisvirtpci which contains devices & |
| * drivers directory |
| */ |
| if (ret) { |
| LOGERR("bus_register ****FAILED:%d\n", ret); |
| POSTCODE_LINUX_3(VPCI_CREATE_FAILURE_PC, ret, |
| POSTCODE_SEVERITY_ERR); |
| return ret; |
| } |
| DBGINF("bus_register successful\n"); |
| BusDeviceInfo_Init(&Bus_DriverInfo, |
| "clientbus", "virtpci", |
| VERSION, NULL, __DATE__, __TIME__); |
| |
| /* create a root bus used to parent all the virtpci buses. */ |
| ret = device_register(&virtpci_rootbus_device); |
| if (ret) { |
| LOGERR("device_register FAILED:%d\n", ret); |
| bus_unregister(&virtpci_bus_type); |
| POSTCODE_LINUX_3(VPCI_CREATE_FAILURE_PC, ret, |
| POSTCODE_SEVERITY_ERR); |
| return ret; |
| } |
| DBGINF("device_register successful ret:%x\n", ret); |
| |
| if (!uisctrl_register_req_handler(2, (void *) &virtpci_ctrlchan_func, |
| &Chipset_DriverInfo)) { |
| LOGERR("uisctrl_register_req_handler ****FAILED.\n"); |
| POSTCODE_LINUX_2(VPCI_CREATE_FAILURE_PC, POSTCODE_SEVERITY_ERR); |
| device_unregister(&virtpci_rootbus_device); |
| bus_unregister(&virtpci_bus_type); |
| return -1; |
| } |
| |
| LOGINF("successfully registered virtpci_ctrlchan_func (0x%p) as callback.\n", |
| (void *) &virtpci_ctrlchan_func); |
| /* create the proc directories */ |
| virtpci_proc_dir = proc_mkdir(DIR_PROC_ENTRY, NULL); |
| virt_proc_entry = proc_create(VIRT_PROC_ENTRY_FN, 0, virtpci_proc_dir, |
| &proc_virt_fops); |
| info_proc_entry = proc_create(INFO_PROC_ENTRY_FN, 0, virtpci_proc_dir, |
| &proc_info_fops); |
| LOGINF("Leaving\n"); |
| POSTCODE_LINUX_2(VPCI_CREATE_EXIT_PC, POSTCODE_SEVERITY_INFO); |
| return 0; |
| } |
| |
| static void __exit virtpci_mod_exit(void) |
| { |
| LOGINF("virtpci_mod_exit...\n"); |
| |
| /* unregister the callback function */ |
| if (!uisctrl_register_req_handler(2, NULL, NULL)) |
| LOGERR("uisctrl_register_req_handler ****FAILED.\n"); |
| |
| device_unregister(&virtpci_rootbus_device); |
| bus_unregister(&virtpci_bus_type); |
| |
| if (virt_proc_entry) |
| remove_proc_entry(VIRT_PROC_ENTRY_FN, virtpci_proc_dir); |
| |
| if (info_proc_entry) |
| remove_proc_entry(INFO_PROC_ENTRY_FN, virtpci_proc_dir); |
| |
| if (virtpci_proc_dir) |
| remove_proc_entry(DIR_PROC_ENTRY, NULL); |
| |
| LOGINF("Leaving\n"); |
| |
| } |
| |
| module_init(virtpci_mod_init); |
| module_exit(virtpci_mod_exit); |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Usha Srinivasan"); |
| MODULE_ALIAS("uisvirtpci"); |
| |