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qdio.h
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/*
* linux/include/asm-s390/qdio.h
*
* Linux for S/390 QDIO base support, Hipersocket base support
* version 2
*
* Copyright 2000,2002 IBM Corporation
* Author(s): Utz Bacher <[email protected]>
*
*/
#ifndef __QDIO_H__
#define __QDIO_H__
/* note, that most of the typedef's are from ingo. */
#include <linux/interrupt.h>
#include <asm/cio.h>
#include <asm/ccwdev.h>
#define QDIO_NAME "qdio "
#ifndef __s390x__
#define QDIO_32_BIT
#endif /* __s390x__ */
/**** CONSTANTS, that are relied on without using these symbols *****/
#define QDIO_MAX_QUEUES_PER_IRQ 32 /* used in width of unsigned int */
/************************ END of CONSTANTS **************************/
#define QDIO_MAX_BUFFERS_PER_Q 128 /* must be a power of 2 (%x=&(x-1)*/
#define QDIO_BUF_ORDER 7 /* 2**this == number of pages used for sbals in 1 q */
#define QDIO_MAX_ELEMENTS_PER_BUFFER 16
#define SBAL_SIZE 256
#define QDIO_QETH_QFMT 0
#define QDIO_ZFCP_QFMT 1
#define QDIO_IQDIO_QFMT 2
#define QDIO_IQDIO_QFMT_ASYNCH 3
struct qdio_buffer_element{
unsigned int flags;
unsigned int length;
#ifdef QDIO_32_BIT
void *reserved;
#endif /* QDIO_32_BIT */
void *addr;
} __attribute__ ((packed,aligned(16)));
struct qdio_buffer{
volatile struct qdio_buffer_element element[16];
} __attribute__ ((packed,aligned(256)));
/* params are: ccw_device, status, qdio_error, siga_error,
queue_number, first element processed, number of elements processed,
int_parm */
typedef void qdio_handler_t(struct ccw_device *,unsigned int,unsigned int,
unsigned int,unsigned int,int,int,unsigned long);
#define QDIO_STATUS_INBOUND_INT 0x01
#define QDIO_STATUS_OUTBOUND_INT 0x02
#define QDIO_STATUS_LOOK_FOR_ERROR 0x04
#define QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR 0x08
#define QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR 0x10
#define QDIO_STATUS_ACTIVATE_CHECK_CONDITION 0x20
#define QDIO_SIGA_ERROR_ACCESS_EXCEPTION 0x10
#define QDIO_SIGA_ERROR_B_BIT_SET 0x20
/* for qdio_initialize */
#define QDIO_INBOUND_0COPY_SBALS 0x01
#define QDIO_OUTBOUND_0COPY_SBALS 0x02
#define QDIO_USE_OUTBOUND_PCIS 0x04
/* for qdio_cleanup */
#define QDIO_FLAG_CLEANUP_USING_CLEAR 0x01
#define QDIO_FLAG_CLEANUP_USING_HALT 0x02
struct qdio_initialize {
struct ccw_device *cdev;
unsigned char q_format;
unsigned char adapter_name[8];
unsigned int qib_param_field_format; /*adapter dependent*/
/* pointer to 128 bytes or NULL, if no param field */
unsigned char *qib_param_field; /* adapter dependent */
/* pointer to no_queues*128 words of data or NULL */
unsigned long *input_slib_elements;
unsigned long *output_slib_elements;
unsigned int min_input_threshold;
unsigned int max_input_threshold;
unsigned int min_output_threshold;
unsigned int max_output_threshold;
unsigned int no_input_qs;
unsigned int no_output_qs;
qdio_handler_t *input_handler;
qdio_handler_t *output_handler;
unsigned long int_parm;
unsigned long flags;
void **input_sbal_addr_array; /* addr of n*128 void ptrs */
void **output_sbal_addr_array; /* addr of n*128 void ptrs */
};
extern int qdio_initialize(struct qdio_initialize *init_data);
extern int qdio_allocate(struct qdio_initialize *init_data);
extern int qdio_establish(struct qdio_initialize *init_data);
extern int qdio_activate(struct ccw_device *,int flags);
#define QDIO_STATE_MUST_USE_OUTB_PCI 0x00000001
#define QDIO_STATE_INACTIVE 0x00000002 /* after qdio_cleanup */
#define QDIO_STATE_ESTABLISHED 0x00000004 /* after qdio_initialize */
#define QDIO_STATE_ACTIVE 0x00000008 /* after qdio_activate */
#define QDIO_STATE_STOPPED 0x00000010 /* after queues went down */
extern unsigned long qdio_get_status(int irq);
#define QDIO_FLAG_SYNC_INPUT 0x01
#define QDIO_FLAG_SYNC_OUTPUT 0x02
#define QDIO_FLAG_UNDER_INTERRUPT 0x04
#define QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT 0x08 /* no effect on
adapter interrupts */
#define QDIO_FLAG_DONT_SIGA 0x10
#define QDIO_FLAG_PCI_OUT 0x20
extern int do_QDIO(struct ccw_device*, unsigned int flags,
unsigned int queue_number,
unsigned int qidx,unsigned int count,
struct qdio_buffer *buffers);
extern int qdio_synchronize(struct ccw_device*, unsigned int flags,
unsigned int queue_number);
extern int qdio_cleanup(struct ccw_device*, int how);
extern int qdio_shutdown(struct ccw_device*, int how);
extern int qdio_free(struct ccw_device*);
unsigned char qdio_get_slsb_state(struct ccw_device*, unsigned int flag,
unsigned int queue_number,
unsigned int qidx);
extern void qdio_init_scrubber(void);
struct qdesfmt0 {
#ifdef QDIO_32_BIT
unsigned long res1; /* reserved */
#endif /* QDIO_32_BIT */
unsigned long sliba; /* storage-list-information-block
address */
#ifdef QDIO_32_BIT
unsigned long res2; /* reserved */
#endif /* QDIO_32_BIT */
unsigned long sla; /* storage-list address */
#ifdef QDIO_32_BIT
unsigned long res3; /* reserved */
#endif /* QDIO_32_BIT */
unsigned long slsba; /* storage-list-state-block address */
unsigned int res4; /* reserved */
unsigned int akey : 4; /* access key for DLIB */
unsigned int bkey : 4; /* access key for SL */
unsigned int ckey : 4; /* access key for SBALs */
unsigned int dkey : 4; /* access key for SLSB */
unsigned int res5 : 16; /* reserved */
} __attribute__ ((packed));
/*
* Queue-Description record (QDR)
*/
struct qdr {
unsigned int qfmt : 8; /* queue format */
unsigned int pfmt : 8; /* impl. dep. parameter format */
unsigned int res1 : 8; /* reserved */
unsigned int ac : 8; /* adapter characteristics */
unsigned int res2 : 8; /* reserved */
unsigned int iqdcnt : 8; /* input-queue-descriptor count */
unsigned int res3 : 8; /* reserved */
unsigned int oqdcnt : 8; /* output-queue-descriptor count */
unsigned int res4 : 8; /* reserved */
unsigned int iqdsz : 8; /* input-queue-descriptor size */
unsigned int res5 : 8; /* reserved */
unsigned int oqdsz : 8; /* output-queue-descriptor size */
unsigned int res6[9]; /* reserved */
#ifdef QDIO_32_BIT
unsigned long res7; /* reserved */
#endif /* QDIO_32_BIT */
unsigned long qiba; /* queue-information-block address */
unsigned int res8; /* reserved */
unsigned int qkey : 4; /* queue-information-block key */
unsigned int res9 : 28; /* reserved */
/* union _qd {*/ /* why this? */
struct qdesfmt0 qdf0[126];
/* } qd;*/
} __attribute__ ((packed,aligned(4096)));
/*
* queue information block (QIB)
*/
#define QIB_AC_INBOUND_PCI_SUPPORTED 0x80
#define QIB_AC_OUTBOUND_PCI_SUPPORTED 0x40
#define QIB_RFLAGS_ENABLE_QEBSM 0x80
struct qib {
unsigned int qfmt : 8; /* queue format */
unsigned int pfmt : 8; /* impl. dep. parameter format */
unsigned int rflags : 8; /* QEBSM */
unsigned int ac : 8; /* adapter characteristics */
unsigned int res2; /* reserved */
#ifdef QDIO_32_BIT
unsigned long res3; /* reserved */
#endif /* QDIO_32_BIT */
unsigned long isliba; /* absolute address of 1st
input SLIB */
#ifdef QDIO_32_BIT
unsigned long res4; /* reserved */
#endif /* QDIO_32_BIT */
unsigned long osliba; /* absolute address of 1st
output SLIB */
unsigned int res5; /* reserved */
unsigned int res6; /* reserved */
unsigned char ebcnam[8]; /* adapter identifier in EBCDIC */
unsigned char res7[88]; /* reserved */
unsigned char parm[QDIO_MAX_BUFFERS_PER_Q];
/* implementation dependent
parameters */
} __attribute__ ((packed,aligned(256)));
/*
* storage-list-information block element (SLIBE)
*/
struct slibe {
#ifdef QDIO_32_BIT
unsigned long res; /* reserved */
#endif /* QDIO_32_BIT */
unsigned long parms; /* implementation dependent
parameters */
};
/*
* storage-list-information block (SLIB)
*/
struct slib {
#ifdef QDIO_32_BIT
unsigned long res1; /* reserved */
#endif /* QDIO_32_BIT */
unsigned long nsliba; /* next SLIB address (if any) */
#ifdef QDIO_32_BIT
unsigned long res2; /* reserved */
#endif /* QDIO_32_BIT */
unsigned long sla; /* SL address */
#ifdef QDIO_32_BIT
unsigned long res3; /* reserved */
#endif /* QDIO_32_BIT */
unsigned long slsba; /* SLSB address */
unsigned char res4[1000]; /* reserved */
struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q]; /* SLIB elements */
} __attribute__ ((packed,aligned(2048)));
struct sbal_flags {
unsigned char res1 : 1; /* reserved */
unsigned char last : 1; /* last entry */
unsigned char cont : 1; /* contiguous storage */
unsigned char res2 : 1; /* reserved */
unsigned char frag : 2; /* fragmentation (s.below) */
unsigned char res3 : 2; /* reserved */
} __attribute__ ((packed));
#define SBAL_FLAGS_FIRST_FRAG 0x04000000UL
#define SBAL_FLAGS_MIDDLE_FRAG 0x08000000UL
#define SBAL_FLAGS_LAST_FRAG 0x0c000000UL
#define SBAL_FLAGS_LAST_ENTRY 0x40000000UL
#define SBAL_FLAGS_CONTIGUOUS 0x20000000UL
#define SBAL_FLAGS0_DATA_CONTINUATION 0x20UL
/* Awesome OpenFCP extensions */
#define SBAL_FLAGS0_TYPE_STATUS 0x00UL
#define SBAL_FLAGS0_TYPE_WRITE 0x08UL
#define SBAL_FLAGS0_TYPE_READ 0x10UL
#define SBAL_FLAGS0_TYPE_WRITE_READ 0x18UL
#define SBAL_FLAGS0_MORE_SBALS 0x04UL
#define SBAL_FLAGS0_COMMAND 0x02UL
#define SBAL_FLAGS0_LAST_SBAL 0x00UL
#define SBAL_FLAGS0_ONLY_SBAL SBAL_FLAGS0_COMMAND
#define SBAL_FLAGS0_MIDDLE_SBAL SBAL_FLAGS0_MORE_SBALS
#define SBAL_FLAGS0_FIRST_SBAL SBAL_FLAGS0_MORE_SBALS | SBAL_FLAGS0_COMMAND
/* Naught of interest beyond this point */
#define SBAL_FLAGS0_PCI 0x40
struct sbal_sbalf_0 {
unsigned char res1 : 1; /* reserved */
unsigned char pci : 1; /* PCI indicator */
unsigned char cont : 1; /* data continuation */
unsigned char sbtype: 2; /* storage-block type (OpenFCP) */
unsigned char res2 : 3; /* reserved */
} __attribute__ ((packed));
struct sbal_sbalf_1 {
unsigned char res1 : 4; /* reserved */
unsigned char key : 4; /* storage key */
} __attribute__ ((packed));
struct sbal_sbalf_14 {
unsigned char res1 : 4; /* reserved */
unsigned char erridx : 4; /* error index */
} __attribute__ ((packed));
struct sbal_sbalf_15 {
unsigned char reason; /* reserved */
} __attribute__ ((packed));
union sbal_sbalf {
struct sbal_sbalf_0 i0;
struct sbal_sbalf_1 i1;
struct sbal_sbalf_14 i14;
struct sbal_sbalf_15 i15;
unsigned char value;
};
struct sbal_element {
union {
struct sbal_flags bits; /* flags */
unsigned char value;
} flags;
unsigned int res1 : 16; /* reserved */
union sbal_sbalf sbalf; /* SBAL flags */
unsigned int res2 : 16; /* reserved */
unsigned int count : 16; /* data count */
#ifdef QDIO_32_BIT
unsigned long res3; /* reserved */
#endif /* QDIO_32_BIT */
unsigned long addr; /* absolute data address */
} __attribute__ ((packed,aligned(16)));
/*
* strorage-block access-list (SBAL)
*/
struct sbal {
struct sbal_element element[QDIO_MAX_ELEMENTS_PER_BUFFER];
} __attribute__ ((packed,aligned(256)));
/*
* storage-list (SL)
*/
struct sl_element {
#ifdef QDIO_32_BIT
unsigned long res; /* reserved */
#endif /* QDIO_32_BIT */
unsigned long sbal; /* absolute SBAL address */
} __attribute__ ((packed));
struct sl {
struct sl_element element[QDIO_MAX_BUFFERS_PER_Q];
} __attribute__ ((packed,aligned(1024)));
/*
* storage-list-state block (SLSB)
*/
struct slsb_flags {
unsigned char owner : 2; /* SBAL owner */
unsigned char type : 1; /* buffer type */
unsigned char state : 5; /* processing state */
} __attribute__ ((packed));
struct slsb {
union {
unsigned char val[QDIO_MAX_BUFFERS_PER_Q];
struct slsb_flags flags[QDIO_MAX_BUFFERS_PER_Q];
} acc;
} __attribute__ ((packed,aligned(256)));
/*
* SLSB values
*/
#define SLSB_OWNER_PROG 1
#define SLSB_OWNER_CU 2
#define SLSB_TYPE_INPUT 0
#define SLSB_TYPE_OUTPUT 1
#define SLSB_STATE_NOT_INIT 0
#define SLSB_STATE_EMPTY 1
#define SLSB_STATE_PRIMED 2
#define SLSB_STATE_HALTED 0xe
#define SLSB_STATE_ERROR 0xf
#define SLSB_P_INPUT_NOT_INIT 0x80
#define SLSB_P_INPUT_PROCESSING 0x81
#define SLSB_CU_INPUT_EMPTY 0x41
#define SLSB_P_INPUT_PRIMED 0x82
#define SLSB_P_INPUT_HALTED 0x8E
#define SLSB_P_INPUT_ERROR 0x8F
#define SLSB_P_OUTPUT_NOT_INIT 0xA0
#define SLSB_P_OUTPUT_EMPTY 0xA1
#define SLSB_CU_OUTPUT_PRIMED 0x62
#define SLSB_P_OUTPUT_HALTED 0xAE
#define SLSB_P_OUTPUT_ERROR 0xAF
#define SLSB_ERROR_DURING_LOOKUP 0xFF
#endif /* __QDIO_H__ */