/* 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__ */