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Diffstat (limited to 'drivers/staging/unisys/include/uisutils.h')
| -rw-r--r-- | drivers/staging/unisys/include/uisutils.h | 299 |
1 files changed, 299 insertions, 0 deletions
diff --git a/drivers/staging/unisys/include/uisutils.h b/drivers/staging/unisys/include/uisutils.h new file mode 100644 index 000000000..c7d0ba8aa --- /dev/null +++ b/drivers/staging/unisys/include/uisutils.h @@ -0,0 +1,299 @@ +/* uisutils.h + * + * Copyright (C) 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. + */ + +/* + * Unisys Virtual HBA utilities header + */ + +#ifndef __UISUTILS__H__ +#define __UISUTILS__H__ +#include <linux/string.h> +#include <linux/io.h> +#include <linux/sched.h> +#include <linux/gfp.h> +#include <linux/uuid.h> +#include <linux/if_ether.h> + +#include "vmcallinterface.h" +#include "channel.h" +#include "uisthread.h" +#include "uisqueue.h" +#include "diagnostics/appos_subsystems.h" +#include "vbusdeviceinfo.h" +#include <linux/atomic.h> + +/* This is the MAGIC number stuffed by virthba in host->this_id. Used to + * identify virtual hbas. + */ +#define UIS_MAGIC_VHBA 707 + +/* global function pointers that act as callback functions into + * uisnicmod, uissdmod, and virtpcimod + */ +extern int (*uisnic_control_chan_func)(struct io_msgs *); +extern int (*uissd_control_chan_func)(struct io_msgs *); +extern int (*virt_control_chan_func)(struct guest_msgs *); + +/* Return values of above callback functions: */ +#define CCF_ERROR 0 /* completed and failed */ +#define CCF_OK 1 /* completed successfully */ +#define CCF_PENDING 2 /* operation still pending */ +extern atomic_t uisutils_registered_services; + +struct req_handler_info { + uuid_le switch_uuid; + int (*controlfunc)(struct io_msgs *); + unsigned long min_channel_bytes; + int (*server_channel_ok)(unsigned long channel_bytes); + int (*server_channel_init)(void *x, unsigned char *client_str, + u32 client_str_len, u64 bytes); + char switch_type_name[99]; + struct list_head list_link; /* links into ReqHandlerInfo_list */ +}; + +struct req_handler_info *req_handler_find(uuid_le switch_uuid); + +#define uislib_ioremap_cache(addr, size) \ + dbg_ioremap_cache(addr, size, __FILE__, __LINE__) + +static inline void __iomem * +dbg_ioremap_cache(u64 addr, unsigned long size, char *file, int line) +{ + void __iomem *new; + + new = ioremap_cache(addr, size); + return new; +} + +#define uislib_ioremap(addr, size) dbg_ioremap(addr, size, __FILE__, __LINE__) + +static inline void * +dbg_ioremap(u64 addr, unsigned long size, char *file, int line) +{ + void *new; + + new = ioremap(addr, size); + return new; +} + +#define uislib_iounmap(addr) dbg_iounmap(addr, __FILE__, __LINE__) + +static inline void +dbg_iounmap(void __iomem *addr, char *file, int line) +{ + iounmap(addr); +} + +#define PROC_READ_BUFFER_SIZE 131072 /* size of the buffer to allocate to + * hold all of /proc/XXX/info */ +int uisutil_add_proc_line_ex(int *total, char **buffer, int *buffer_remaining, + char *format, ...); + +int uisctrl_register_req_handler(int type, void *fptr, + struct ultra_vbus_deviceinfo *chipset_driver_info); + +unsigned char *util_map_virt(struct phys_info *sg); +void util_unmap_virt(struct phys_info *sg); +unsigned char *util_map_virt_atomic(struct phys_info *sg); +void util_unmap_virt_atomic(void *buf); +int uislib_client_inject_add_bus(u32 bus_no, uuid_le inst_uuid, + u64 channel_addr, ulong n_channel_bytes); +int uislib_client_inject_del_bus(u32 bus_no); + +int uislib_client_inject_add_vhba(u32 bus_no, u32 dev_no, + u64 phys_chan_addr, u32 chan_bytes, + int is_test_addr, uuid_le inst_uuid, + struct irq_info *intr); +int uislib_client_inject_pause_vhba(u32 bus_no, u32 dev_no); +int uislib_client_inject_resume_vhba(u32 bus_no, u32 dev_no); +int uislib_client_inject_del_vhba(u32 bus_no, u32 dev_no); +int uislib_client_inject_add_vnic(u32 bus_no, u32 dev_no, + u64 phys_chan_addr, u32 chan_bytes, + int is_test_addr, uuid_le inst_uuid, + struct irq_info *intr); +int uislib_client_inject_pause_vnic(u32 bus_no, u32 dev_no); +int uislib_client_inject_resume_vnic(u32 bus_no, u32 dev_no); +int uislib_client_inject_del_vnic(u32 bus_no, u32 dev_no); +#ifdef STORAGE_CHANNEL +u64 uislib_storage_channel(int client_id); +#endif +int uislib_get_owned_pdest(struct uisscsi_dest *pdest); + +int uislib_send_event(enum controlvm_id id, + struct controlvm_message_packet *event); + +/* structure used by vhba & vnic to keep track of queue & thread info */ +struct chaninfo { + struct uisqueue_info *queueinfo; + /* this specifies the queue structures for a channel */ + /* ALLOCATED BY THE OTHER END - WE JUST GET A POINTER TO THE MEMORY */ + spinlock_t insertlock; + /* currently used only in virtnic when sending data to uisnic */ + /* to synchronize the inserts into the signal queue */ + struct uisthread_info threadinfo; + /* this specifies the thread structures used by the thread that */ + /* handles this channel */ +}; + +/* this is the wait code for all the threads - it is used to get +* something from a queue choices: wait_for_completion_interruptible, +* _timeout, interruptible_timeout +*/ +#define UIS_THREAD_WAIT_MSEC(x) { \ + set_current_state(TASK_INTERRUPTIBLE); \ + schedule_timeout(msecs_to_jiffies(x)); \ +} + +#define UIS_THREAD_WAIT_USEC(x) { \ + set_current_state(TASK_INTERRUPTIBLE); \ + schedule_timeout(usecs_to_jiffies(x)); \ +} + +#define UIS_THREAD_WAIT UIS_THREAD_WAIT_MSEC(5) + +#define UIS_THREAD_WAIT_SEC(x) { \ + set_current_state(TASK_INTERRUPTIBLE); \ + schedule_timeout((x)*HZ); \ +} + +/* This is a hack until we fix IOVM to initialize the channel header + * correctly at DEVICE_CREATE time, INSTEAD OF waiting until + * DEVICE_CONFIGURE time. + */ +static inline void +wait_for_valid_guid(uuid_le __iomem *guid) +{ + uuid_le tmpguid; + + while (1) { + memcpy_fromio((void *)&tmpguid, + (void __iomem *)guid, sizeof(uuid_le)); + if (uuid_le_cmp(tmpguid, NULL_UUID_LE) != 0) + break; + UIS_THREAD_WAIT_SEC(5); + } +} + +static inline unsigned int +issue_vmcall_io_controlvm_addr(u64 *control_addr, u32 *control_bytes) +{ + struct vmcall_io_controlvm_addr_params params; + int result = VMCALL_SUCCESS; + u64 physaddr; + + physaddr = virt_to_phys(¶ms); + ISSUE_IO_VMCALL(VMCALL_IO_CONTROLVM_ADDR, physaddr, result); + if (VMCALL_SUCCESSFUL(result)) { + *control_addr = params.address; + *control_bytes = params.channel_bytes; + } + return result; +} + +static inline unsigned int issue_vmcall_io_diag_addr(u64 *diag_channel_addr) +{ + struct vmcall_io_diag_addr_params params; + int result = VMCALL_SUCCESS; + u64 physaddr; + + physaddr = virt_to_phys(¶ms); + ISSUE_IO_VMCALL(VMCALL_IO_DIAG_ADDR, physaddr, result); + if (VMCALL_SUCCESSFUL(result)) + *diag_channel_addr = params.address; + return result; +} + +static inline unsigned int issue_vmcall_io_visorserial_addr(u64 *channel_addr) +{ + struct vmcall_io_visorserial_addr_params params; + int result = VMCALL_SUCCESS; + u64 physaddr; + + physaddr = virt_to_phys(¶ms); + ISSUE_IO_VMCALL(VMCALL_IO_VISORSERIAL_ADDR, physaddr, result); + if (VMCALL_SUCCESSFUL(result)) + *channel_addr = params.address; + return result; +} + +static inline s64 issue_vmcall_query_guest_virtual_time_offset(void) +{ + u64 result = VMCALL_SUCCESS; + u64 physaddr = 0; + + ISSUE_IO_VMCALL(VMCALL_QUERY_GUEST_VIRTUAL_TIME_OFFSET, physaddr, + result); + return result; +} + +struct log_info_t { + unsigned long long last_cycles; + unsigned long long delta_sum[64]; + unsigned long long delta_cnt[64]; + unsigned long long max_delta[64]; + unsigned long long min_delta[64]; +}; + +static inline int issue_vmcall_update_physical_time(u64 adjustment) +{ + int result = VMCALL_SUCCESS; + + ISSUE_IO_VMCALL(VMCALL_UPDATE_PHYSICAL_TIME, adjustment, result); + return result; +} + +static inline unsigned int issue_vmcall_channel_mismatch(const char *chname, + const char *item_name, u32 line_no, + const char *path_n_fn) +{ + struct vmcall_channel_version_mismatch_params params; + int result = VMCALL_SUCCESS; + u64 physaddr; + char *last_slash = NULL; + + strlcpy(params.chname, chname, sizeof(params.chname)); + strlcpy(params.item_name, item_name, sizeof(params.item_name)); + params.line_no = line_no; + + last_slash = strrchr(path_n_fn, '/'); + if (last_slash != NULL) { + last_slash++; + strlcpy(params.file_name, last_slash, sizeof(params.file_name)); + } else + strlcpy(params.file_name, + "Cannot determine source filename", + sizeof(params.file_name)); + + physaddr = virt_to_phys(¶ms); + ISSUE_IO_VMCALL(VMCALL_CHANNEL_VERSION_MISMATCH, physaddr, result); + return result; +} + +#define UIS_DAEMONIZE(nam) +void *uislib_cache_alloc(struct kmem_cache *cur_pool, char *fn, int ln); +#define UISCACHEALLOC(cur_pool) uislib_cache_alloc(cur_pool, __FILE__, __LINE__) +void uislib_cache_free(struct kmem_cache *cur_pool, void *p, char *fn, int ln); +#define UISCACHEFREE(cur_pool, p) \ + uislib_cache_free(cur_pool, p, __FILE__, __LINE__) + +void uislib_enable_channel_interrupts(u32 bus_no, u32 dev_no, + int (*interrupt)(void *), + void *interrupt_context); +void uislib_disable_channel_interrupts(u32 bus_no, u32 dev_no); +void uislib_force_channel_interrupt(u32 bus_no, u32 dev_no); + +#endif /* __UISUTILS__H__ */ |