1 files changed, 348 insertions, 0 deletions
diff --git a/drivers/staging/unisys/include/uisutils.h b/drivers/staging/unisys/include/uisutils.h
new file mode 100644
index 000000000000..5fdab3a3464a
--- /dev/null
+++ b/drivers/staging/unisys/include/uisutils.h
@@ -0,0 +1,348 @@
+/* uisutils.h
+ *
+ * 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.
+ */
+
+/*
+ * 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 "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 (*UisnicControlChanFunc)(struct io_msgs *);
+extern int (*UissdControlChanFunc)(struct io_msgs *);
+extern int (*VirtControlChanFunc)(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;
+
+typedef unsigned int MACARRAY[MAX_MACADDR_LEN];
+typedef struct ReqHandlerInfo_struct {
+	GUID switchTypeGuid;
+	int (*controlfunc)(struct io_msgs *);
+	unsigned long min_channel_bytes;
+	int (*Server_Channel_Ok)(unsigned long channelBytes);
+	int (*Server_Channel_Init)
+	 (void *x, unsigned char *clientStr, U32 clientStrLen, U64 bytes);
+	char switch_type_name[99];
+	struct list_head list_link;	/* links into ReqHandlerInfo_list */
+} ReqHandlerInfo_t;
+
+ReqHandlerInfo_t *ReqHandlerAdd(GUID switchTypeGuid,
+				const char *switch_type_name,
+				int (*controlfunc)(struct io_msgs *),
+				unsigned long min_channel_bytes,
+				int (*Server_Channel_Ok)(unsigned long
+							 channelBytes),
+				int (*Server_Channel_Init)
+				 (void *x, unsigned char *clientStr,
+				  U32 clientStrLen, U64 bytes));
+ReqHandlerInfo_t *ReqHandlerFind(GUID switchTypeGuid);
+int ReqHandlerDel(GUID switchTypeGuid);
+
+#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,
+				 ULTRA_VBUS_DEVICEINFO *chipset_DriverInfo);
+int uisctrl_register_req_handler_ex(GUID switchTypeGuid,
+				    const char *switch_type_name,
+				    int (*fptr)(struct io_msgs *),
+				    unsigned long min_channel_bytes,
+				    int (*Server_Channel_Ok)(unsigned long
+							     channelBytes),
+				    int (*Server_Channel_Init)
+				    (void *x, unsigned char *clientStr,
+				     U32 clientStrLen, U64 bytes),
+				    ULTRA_VBUS_DEVICEINFO *chipset_DriverInfo);
+
+int uisctrl_unregister_req_handler_ex(GUID switchTypeGuid);
+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_server_inject_add_vnic(U32 switchNo, U32 BusNo, U32 numIntPorts,
+				  U32 numExtPorts, MACARRAY pmac[],
+				  pCHANNEL_HEADER **chan);
+void uislib_server_inject_del_vnic(U32 switchNo, U32 busNo, U32 numIntPorts,
+				   U32 numExtPorts);
+int uislib_client_inject_add_bus(U32 busNo, GUID instGuid,
+				 U64 channelAddr, ulong nChannelBytes);
+int  uislib_client_inject_del_bus(U32 busNo);
+
+int uislib_client_inject_add_vhba(U32 busNo, U32 devNo,
+				  U64 phys_chan_addr, U32 chan_bytes,
+				  int is_test_addr, GUID instGuid,
+				  struct InterruptInfo *intr);
+int  uislib_client_inject_pause_vhba(U32 busNo, U32 devNo);
+int  uislib_client_inject_resume_vhba(U32 busNo, U32 devNo);
+int uislib_client_inject_del_vhba(U32 busNo, U32 devNo);
+int uislib_client_inject_add_vnic(U32 busNo, U32 devNo,
+				  U64 phys_chan_addr, U32 chan_bytes,
+				  int is_test_addr, GUID instGuid,
+				  struct InterruptInfo *intr);
+int uislib_client_inject_pause_vnic(U32 busNo, U32 devNo);
+int uislib_client_inject_resume_vnic(U32 busNo, U32 devNo);
+int uislib_client_inject_del_vnic(U32 busNo, U32 devNo);
+#ifdef STORAGE_CHANNEL
+U64 uislib_storage_channel(int client_id);
+#endif
+int uislib_get_owned_pdest(struct uisscsi_dest *pdest);
+
+int uislib_send_event(CONTROLVM_ID id, 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.
+ */
+#define WAIT_FOR_VALID_GUID(guid) \
+	do {						   \
+		while (MEMCMP_IO(&guid, &Guid0, sizeof(Guid0)) == 0) {	\
+			LOGERR("Waiting for non-0 GUID (why???)...\n"); \
+			UIS_THREAD_WAIT_SEC(5);				\
+		}							\
+		LOGERR("OK... GUID is non-0 now\n");			\
+	} while (0)
+
+/* CopyFragsInfoFromSkb returns the number of entries added to frags array
+ * Returns -1 on failure.
+ */
+unsigned int uisutil_copy_fragsinfo_from_skb(unsigned char *calling_ctx,
+					     void *skb_in,
+					     unsigned int firstfraglen,
+					     unsigned int frags_max,
+					     struct phys_info frags[]);
+
+static inline unsigned int
+Issue_VMCALL_IO_CONTROLVM_ADDR(U64 *ControlAddress, U32 *ControlBytes)
+{
+	VMCALL_IO_CONTROLVM_ADDR_PARAMS params;
+	int result = VMCALL_SUCCESS;
+	U64 physaddr;
+
+	physaddr = virt_to_phys(&params);
+	ISSUE_IO_VMCALL(VMCALL_IO_CONTROLVM_ADDR, physaddr, result);
+	if (VMCALL_SUCCESSFUL(result)) {
+		*ControlAddress = params.ChannelAddress;
+		*ControlBytes = params.ChannelBytes;
+	}
+	return result;
+}
+
+static inline unsigned int Issue_VMCALL_IO_DIAG_ADDR(U64 *DiagChannelAddress)
+{
+	VMCALL_IO_DIAG_ADDR_PARAMS params;
+	int result = VMCALL_SUCCESS;
+	U64 physaddr;
+
+	physaddr = virt_to_phys(&params);
+	ISSUE_IO_VMCALL(VMCALL_IO_DIAG_ADDR, physaddr, result);
+	if (VMCALL_SUCCESSFUL(result))
+		*DiagChannelAddress = params.ChannelAddress;
+	return result;
+}
+
+static inline unsigned int
+Issue_VMCALL_IO_VISORSERIAL_ADDR(U64 *DiagChannelAddress)
+{
+	VMCALL_IO_VISORSERIAL_ADDR_PARAMS params;
+	int result = VMCALL_SUCCESS;
+	U64 physaddr;
+
+	physaddr = virt_to_phys(&params);
+	ISSUE_IO_VMCALL(VMCALL_IO_VISORSERIAL_ADDR, physaddr, result);
+	if (VMCALL_SUCCESSFUL(result))
+		*DiagChannelAddress = params.ChannelAddress;
+	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;
+}
+
+static inline S64 Issue_VMCALL_MEASUREMENT_DO_NOTHING(void)
+{
+	U64 result = VMCALL_SUCCESS;
+	U64 physaddr = 0;
+
+	ISSUE_IO_VMCALL(VMCALL_MEASUREMENT_DO_NOTHING, physaddr, result);
+	return result;
+}
+
+struct log_info_t {
+	volatile 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 *ChannelName,
+			      const char *ItemName,
+			      U32 SourceLineNumber, const char *path_n_fn)
+{
+	VMCALL_CHANNEL_VERSION_MISMATCH_PARAMS params;
+	int result = VMCALL_SUCCESS;
+	U64 physaddr;
+	char *last_slash = NULL;
+
+	strncpy(params.ChannelName, ChannelName,
+		lengthof(VMCALL_CHANNEL_VERSION_MISMATCH_PARAMS, ChannelName));
+	strncpy(params.ItemName, ItemName,
+		lengthof(VMCALL_CHANNEL_VERSION_MISMATCH_PARAMS, ItemName));
+	params.SourceLineNumber = SourceLineNumber;
+
+	last_slash = strrchr(path_n_fn, '/');
+	if (last_slash != NULL) {
+		last_slash++;
+		strncpy(params.SourceFileName, last_slash,
+			lengthof(VMCALL_CHANNEL_VERSION_MISMATCH_PARAMS,
+				 SourceFileName));
+	} else
+		strncpy(params.SourceFileName,
+			"Cannot determine source filename",
+			lengthof(VMCALL_CHANNEL_VERSION_MISMATCH_PARAMS,
+				 SourceFileName));
+
+	physaddr = virt_to_phys(&params);
+	ISSUE_IO_VMCALL(VMCALL_CHANNEL_VERSION_MISMATCH, physaddr, result);
+	return result;
+}
+
+static inline unsigned int Issue_VMCALL_FATAL_BYE_BYE(void)
+{
+	int result = VMCALL_SUCCESS;
+	U64 physaddr = 0;
+
+	ISSUE_IO_VMCALL(VMCALL_GENERIC_SURRENDER_QUANTUM_FOREVER, 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 busNo, U32 devNo,
+				      int (*interrupt)(void *),
+				      void *interrupt_context);
+void uislib_disable_channel_interrupts(U32 busNo, U32 devNo);
+void uislib_force_channel_interrupt(U32 busNo, U32 devNo);
+
+#endif /* __UISUTILS__H__ */