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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/s390/include/asm/appldata.h
10818 views
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/*

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 * include/asm-s390/appldata.h

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 *

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 * Copyright (C) IBM Corp. 2006

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 *

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 * Author(s): Melissa Howland <[email protected]>

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 */

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#ifndef _ASM_S390_APPLDATA_H

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#define _ASM_S390_APPLDATA_H

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#include <asm/io.h>

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#ifndef CONFIG_64BIT

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#define APPLDATA_START_INTERVAL_REC	0x00	/* Function codes for */

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#define APPLDATA_STOP_REC		0x01	/* DIAG 0xDC	      */

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#define APPLDATA_GEN_EVENT_REC		0x02

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#define APPLDATA_START_CONFIG_REC	0x03

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/*

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 * Parameter list for DIAGNOSE X'DC'

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 */

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struct appldata_parameter_list {

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	u16 diag;		/* The DIAGNOSE code X'00DC'	      */

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	u8  function;		/* The function code for the DIAGNOSE */

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	u8  parlist_length;	/* Length of the parameter list       */

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	u32 product_id_addr;	/* Address of the 16-byte product ID  */

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	u16 reserved;

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	u16 buffer_length;	/* Length of the application data buffer  */

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	u32 buffer_addr;	/* Address of the application data buffer */

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} __attribute__ ((packed));

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#else /* CONFIG_64BIT */

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#define APPLDATA_START_INTERVAL_REC	0x80

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#define APPLDATA_STOP_REC		0x81

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#define APPLDATA_GEN_EVENT_REC		0x82

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#define APPLDATA_START_CONFIG_REC	0x83

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/*

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 * Parameter list for DIAGNOSE X'DC'

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 */

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struct appldata_parameter_list {

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	u16 diag;

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	u8  function;

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	u8  parlist_length;

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	u32 unused01;

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	u16 reserved;

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	u16 buffer_length;

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	u32 unused02;

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	u64 product_id_addr;

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	u64 buffer_addr;

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} __attribute__ ((packed));

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#endif /* CONFIG_64BIT */

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struct appldata_product_id {

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	char prod_nr[7];	/* product number */

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	u16  prod_fn;		/* product function */

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	u8   record_nr; 	/* record number */

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	u16  version_nr;	/* version */

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	u16  release_nr;	/* release */

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	u16  mod_lvl;		/* modification level */

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} __attribute__ ((packed));

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static inline int appldata_asm(struct appldata_product_id *id,

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			       unsigned short fn, void *buffer,

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			       unsigned short length)

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{

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	struct appldata_parameter_list parm_list;

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	int ry;

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	if (!MACHINE_IS_VM)

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		return -ENOSYS;

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	parm_list.diag = 0xdc;

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	parm_list.function = fn;

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	parm_list.parlist_length = sizeof(parm_list);

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	parm_list.buffer_length = length;

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	parm_list.product_id_addr = (unsigned long) id;

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	parm_list.buffer_addr = virt_to_phys(buffer);

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	asm volatile(

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		"	diag	%1,%0,0xdc"

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		: "=d" (ry)

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		: "d" (&parm_list), "m" (parm_list), "m" (*id)

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		: "cc");

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	return ry;

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}

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#endif /* _ASM_S390_APPLDATA_H */

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