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[vmware] Expose GuestRPC mechanism in 64-bit builds

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The GuestRPC mechanism (used for VMWARE_SETTINGS and CONSOLE_VMWARE)
does not use any real-mode code and so can be exposed in both 64-bit
and 32-bit builds.

Reported-by: Matthew Helton <mwhelton@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2016-01-05 17:20:36 +00:00
parent 29cb090f98
commit dd485992dc
8 changed files with 1 additions and 1 deletions
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68
src/arch/x86/include/ipxe/guestrpc.h Normal file
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#ifndef _IPXE_GUESTRPC_H
#define _IPXE_GUESTRPC_H
/** @file
*
* VMware GuestRPC mechanism
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
#include <ipxe/vmware.h>
/** GuestRPC magic number */
#define GUESTRPC_MAGIC 0x49435052 /* "RPCI" */
/** Open RPC channel */
#define GUESTRPC_OPEN 0x00
/** Open RPC channel success status */
#define GUESTRPC_OPEN_SUCCESS 0x00010000
/** Send RPC command length */
#define GUESTRPC_COMMAND_LEN 0x01
/** Send RPC command length success status */
#define GUESTRPC_COMMAND_LEN_SUCCESS 0x00810000
/** Send RPC command data */
#define GUESTRPC_COMMAND_DATA 0x02
/** Send RPC command data success status */
#define GUESTRPC_COMMAND_DATA_SUCCESS 0x00010000
/** Receive RPC reply length */
#define GUESTRPC_REPLY_LEN 0x03
/** Receive RPC reply length success status */
#define GUESTRPC_REPLY_LEN_SUCCESS 0x00830000
/** Receive RPC reply data */
#define GUESTRPC_REPLY_DATA 0x04
/** Receive RPC reply data success status */
#define GUESTRPC_REPLY_DATA_SUCCESS 0x00010000
/** Finish receiving RPC reply */
#define GUESTRPC_REPLY_FINISH 0x05
/** Finish receiving RPC reply success status */
#define GUESTRPC_REPLY_FINISH_SUCCESS 0x00010000
/** Close RPC channel */
#define GUESTRPC_CLOSE 0x06
/** Close RPC channel success status */
#define GUESTRPC_CLOSE_SUCCESS 0x00010000
/** RPC command success status */
#define GUESTRPC_SUCCESS 0x2031 /* "1 " */
extern int guestrpc_open ( void );
extern void guestrpc_close ( int channel );
extern int guestrpc_command ( int channel, const char *command, char *reply,
size_t reply_len );
#endif /* _IPXE_GUESTRPC_H */

81
src/arch/x86/include/ipxe/vmware.h Normal file
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#ifndef _IPXE_VMWARE_H
#define _IPXE_VMWARE_H
/** @file
*
* VMware backdoor mechanism
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
/** VMware backdoor I/O port */
#define VMW_PORT 0x5658
/** VMware backdoor magic value */
#define VMW_MAGIC 0x564d5868 /* "VMXh" */
/** VMware backdoor magic instruction */
#define VMW_BACKDOOR "inl %%dx, %%eax"
/** Get VMware version */
#define VMW_CMD_GET_VERSION 0x0a
/** Issue GuestRPC command */
#define VMW_CMD_GUESTRPC 0x1e
/**
* Get VMware version
*
* @ret version VMware version(?)
* @ret magic VMware magic number, if present
* @ret product_type VMware product type
*/
static inline __attribute__ (( always_inline )) void
vmware_cmd_get_version ( uint32_t *version, uint32_t *magic,
uint32_t *product_type ) {
uint32_t discard_d;
/* Perform backdoor call */
__asm__ __volatile__ ( VMW_BACKDOOR
: "=a" ( *version ), "=b" ( *magic ),
"=c" ( *product_type ), "=d" ( discard_d )
: "0" ( VMW_MAGIC ), "1" ( 0 ),
"2" ( VMW_CMD_GET_VERSION ),
"3" ( VMW_PORT ) );
}
/**
* Issue GuestRPC command
*
* @v channel Channel number
* @v subcommand GuestRPC subcommand
* @v parameter Subcommand-specific parameter
* @ret edxhi Subcommand-specific result
* @ret ebx Subcommand-specific result
* @ret status Command status
*/
static inline __attribute__ (( always_inline )) uint32_t
vmware_cmd_guestrpc ( int channel, uint16_t subcommand, uint32_t parameter,
uint16_t *edxhi, uint32_t *ebx ) {
uint32_t discard_a;
uint32_t status;
uint32_t edx;
/* Perform backdoor call */
__asm__ __volatile__ ( VMW_BACKDOOR
: "=a" ( discard_a ), "=b" ( *ebx ),
"=c" ( status ), "=d" ( edx )
: "0" ( VMW_MAGIC ), "1" ( parameter ),
"2" ( VMW_CMD_GUESTRPC | ( subcommand << 16 )),
"3" ( VMW_PORT | ( channel << 16 ) ) );
*edxhi = ( edx >> 16 );
return status;
}
extern int vmware_present ( void );
#endif /* _IPXE_VMWARE_H */