diff options
Diffstat (limited to 'drivers/staging/unisys/visorchipset/controlvm_direct.c')
-rw-r--r-- | drivers/staging/unisys/visorchipset/controlvm_direct.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/staging/unisys/visorchipset/controlvm_direct.c b/drivers/staging/unisys/visorchipset/controlvm_direct.c new file mode 100644 index 000000000000..b911ea85c093 --- /dev/null +++ b/drivers/staging/unisys/visorchipset/controlvm_direct.c @@ -0,0 +1,62 @@ +/* controlvm_direct.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. + */ + +/* This is a controlvm-related code that is dependent upon firmware running + * on a virtual partition. + */ + +#include "globals.h" +#include "uisutils.h" +#include "controlvm.h" +#define CURRENT_FILE_PC VISOR_CHIPSET_PC_controlvm_direct_c + + +/* We can fill in this code when we learn how to make vmcalls... */ + + + +int controlvm_init(void) +{ + return 0; +} + + + +void controlvm_deinit(void) +{ +} + + + +HOSTADDRESS controlvm_get_channel_address(void) +{ + static BOOL warned = FALSE; + U64 addr = 0; + + U32 size = 0; + + if (!VMCALL_SUCCESSFUL(Issue_VMCALL_IO_CONTROLVM_ADDR(&addr, &size))) { + if (!warned) { + ERRDRV("%s - vmcall to determine controlvm channel addr failed", + __func__); + warned = TRUE; + } + return 0; + } + INFODRV("controlvm addr=%Lx", addr); + return addr; +} |