diff options
Diffstat (limited to 'drivers/staging/unisys/visorchannel/visorchannel.h')
| -rw-r--r-- | drivers/staging/unisys/visorchannel/visorchannel.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/drivers/staging/unisys/visorchannel/visorchannel.h b/drivers/staging/unisys/visorchannel/visorchannel.h new file mode 100644 index 000000000000..62d29a233fd0 --- /dev/null +++ b/drivers/staging/unisys/visorchannel/visorchannel.h @@ -0,0 +1,106 @@ +/* visorchannel.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. + */ + +#ifndef __VISORCHANNEL_H__ +#define __VISORCHANNEL_H__ + +#include "commontypes.h" +#include "memregion.h" +#include "channel.h" +#ifndef HOSTADDRESS +#define HOSTADDRESS U64 +#endif +#ifndef BOOL +#define BOOL int +#endif + +/* VISORCHANNEL is an opaque structure to users. + * Fields are declared only in the implementation .c files. + */ +typedef struct VISORCHANNEL_Tag VISORCHANNEL; + +/* Note that for visorchannel_create() and visorchannel_create_overlapped(), + * <channelBytes> and <guid> arguments may be 0 if we are a channel CLIENT. + * In this case, the values can simply be read from the channel header. + */ +VISORCHANNEL *visorchannel_create(HOSTADDRESS physaddr, + ulong channelBytes, GUID guid); +VISORCHANNEL *visorchannel_create_overlapped(ulong channelBytes, + VISORCHANNEL *parent, ulong off, + GUID guid); +VISORCHANNEL *visorchannel_create_with_lock(HOSTADDRESS physaddr, + ulong channelBytes, GUID guid); +VISORCHANNEL *visorchannel_create_overlapped_with_lock(ulong channelBytes, + VISORCHANNEL *parent, + ulong off, GUID guid); +void visorchannel_destroy(VISORCHANNEL *channel); +int visorchannel_read(VISORCHANNEL *channel, ulong offset, + void *local, ulong nbytes); +int visorchannel_write(VISORCHANNEL *channel, ulong offset, + void *local, ulong nbytes); +int visorchannel_clear(VISORCHANNEL *channel, ulong offset, + U8 ch, ulong nbytes); +BOOL visorchannel_signalremove(VISORCHANNEL *channel, U32 queue, void *msg); +BOOL visorchannel_signalinsert(VISORCHANNEL *channel, U32 queue, void *msg); +int visorchannel_signalqueue_slots_avail(VISORCHANNEL *channel, U32 queue); +int visorchannel_signalqueue_max_slots(VISORCHANNEL *channel, U32 queue); + +HOSTADDRESS visorchannel_get_physaddr(VISORCHANNEL *channel); +ulong visorchannel_get_nbytes(VISORCHANNEL *channel); +char *visorchannel_id(VISORCHANNEL *channel, char *s); +char *visorchannel_zoneid(VISORCHANNEL *channel, char *s); +U64 visorchannel_get_clientpartition(VISORCHANNEL *channel); +GUID visorchannel_get_GUID(VISORCHANNEL *channel); +MEMREGION *visorchannel_get_memregion(VISORCHANNEL *channel); +char *visorchannel_GUID_id(GUID *guid, char *s); +void visorchannel_debug(VISORCHANNEL *channel, int nQueues, + struct seq_file *seq, U32 off); +void visorchannel_dump_section(VISORCHANNEL *chan, char *s, + int off, int len, struct seq_file *seq); +void *visorchannel_get_header(VISORCHANNEL *channel); + +#define VISORCHANNEL_CHANGE_SERVER_STATE(chan, chanId, newstate) \ + do { \ + U8 *p = (U8 *)visorchannel_get_header(chan); \ + if (p) { \ + ULTRA_CHANNEL_SERVER_TRANSITION(p, chanId, SrvState, \ + newstate, logCtx); \ + visorchannel_write \ + (chan, \ + offsetof(ULTRA_CHANNEL_PROTOCOL, SrvState), \ + p + \ + offsetof(ULTRA_CHANNEL_PROTOCOL, SrvState), \ + sizeof(U32)); \ + } \ + } while (0) + +#define VISORCHANNEL_CHANGE_CLIENT_STATE(chan, chanId, newstate) \ + do { \ + U8 *p = (U8 *)visorchannel_get_header(chan); \ + if (p) { \ + ULTRA_CHANNEL_CLIENT_TRANSITION(p, chanId, \ + newstate, logCtx); \ + visorchannel_write \ + (chan, \ + offsetof(ULTRA_CHANNEL_PROTOCOL, CliStateOS), \ + p + \ + offsetof(ULTRA_CHANNEL_PROTOCOL, CliStateOS), \ + sizeof(U32)); \ + } \ + } while (0) + +#endif |