431 lines
12 KiB
C
431 lines
12 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
/*
|
||
|
|
* Copyright IBM Corp. 2000, 2008
|
||
|
|
* Author(s): Utz Bacher <utz.bacher@de.ibm.com>
|
||
|
|
* Jan Glauber <jang@linux.vnet.ibm.com>
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
#ifndef __QDIO_H__
|
||
|
|
#define __QDIO_H__
|
||
|
|
|
||
|
|
#include <linux/interrupt.h>
|
||
|
|
#include <asm/cio.h>
|
||
|
|
#include <asm/ccwdev.h>
|
||
|
|
|
||
|
|
/* only use 4 queues to save some cachelines */
|
||
|
|
#define QDIO_MAX_QUEUES_PER_IRQ 4
|
||
|
|
#define QDIO_MAX_BUFFERS_PER_Q 128
|
||
|
|
#define QDIO_MAX_BUFFERS_MASK (QDIO_MAX_BUFFERS_PER_Q - 1)
|
||
|
|
#define QDIO_MAX_ELEMENTS_PER_BUFFER 16
|
||
|
|
#define QDIO_SBAL_SIZE 256
|
||
|
|
|
||
|
|
#define QDIO_QETH_QFMT 0
|
||
|
|
#define QDIO_ZFCP_QFMT 1
|
||
|
|
#define QDIO_IQDIO_QFMT 2
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct qdesfmt0 - queue descriptor, format 0
|
||
|
|
* @sliba: storage list information block address
|
||
|
|
* @sla: storage list address
|
||
|
|
* @slsba: storage list state block address
|
||
|
|
* @akey: access key for DLIB
|
||
|
|
* @bkey: access key for SL
|
||
|
|
* @ckey: access key for SBALs
|
||
|
|
* @dkey: access key for SLSB
|
||
|
|
*/
|
||
|
|
struct qdesfmt0 {
|
||
|
|
u64 sliba;
|
||
|
|
u64 sla;
|
||
|
|
u64 slsba;
|
||
|
|
u32 : 32;
|
||
|
|
u32 akey : 4;
|
||
|
|
u32 bkey : 4;
|
||
|
|
u32 ckey : 4;
|
||
|
|
u32 dkey : 4;
|
||
|
|
u32 : 16;
|
||
|
|
} __attribute__ ((packed));
|
||
|
|
|
||
|
|
#define QDR_AC_MULTI_BUFFER_ENABLE 0x01
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct qdr - queue description record (QDR)
|
||
|
|
* @qfmt: queue format
|
||
|
|
* @pfmt: implementation dependent parameter format
|
||
|
|
* @ac: adapter characteristics
|
||
|
|
* @iqdcnt: input queue descriptor count
|
||
|
|
* @oqdcnt: output queue descriptor count
|
||
|
|
* @iqdsz: inpout queue descriptor size
|
||
|
|
* @oqdsz: output queue descriptor size
|
||
|
|
* @qiba: queue information block address
|
||
|
|
* @qkey: queue information block key
|
||
|
|
* @qdf0: queue descriptions
|
||
|
|
*/
|
||
|
|
struct qdr {
|
||
|
|
u32 qfmt : 8;
|
||
|
|
u32 pfmt : 8;
|
||
|
|
u32 : 8;
|
||
|
|
u32 ac : 8;
|
||
|
|
u32 : 8;
|
||
|
|
u32 iqdcnt : 8;
|
||
|
|
u32 : 8;
|
||
|
|
u32 oqdcnt : 8;
|
||
|
|
u32 : 8;
|
||
|
|
u32 iqdsz : 8;
|
||
|
|
u32 : 8;
|
||
|
|
u32 oqdsz : 8;
|
||
|
|
/* private: */
|
||
|
|
u32 res[9];
|
||
|
|
/* public: */
|
||
|
|
u64 qiba;
|
||
|
|
u32 : 32;
|
||
|
|
u32 qkey : 4;
|
||
|
|
u32 : 28;
|
||
|
|
struct qdesfmt0 qdf0[126];
|
||
|
|
} __packed __aligned(PAGE_SIZE);
|
||
|
|
|
||
|
|
#define QIB_AC_OUTBOUND_PCI_SUPPORTED 0x40
|
||
|
|
#define QIB_RFLAGS_ENABLE_QEBSM 0x80
|
||
|
|
#define QIB_RFLAGS_ENABLE_DATA_DIV 0x02
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct qib - queue information block (QIB)
|
||
|
|
* @qfmt: queue format
|
||
|
|
* @pfmt: implementation dependent parameter format
|
||
|
|
* @rflags: QEBSM
|
||
|
|
* @ac: adapter characteristics
|
||
|
|
* @isliba: absolute address of first input SLIB
|
||
|
|
* @osliba: absolute address of first output SLIB
|
||
|
|
* @ebcnam: adapter identifier in EBCDIC
|
||
|
|
* @parm: implementation dependent parameters
|
||
|
|
*/
|
||
|
|
struct qib {
|
||
|
|
u32 qfmt : 8;
|
||
|
|
u32 pfmt : 8;
|
||
|
|
u32 rflags : 8;
|
||
|
|
u32 ac : 8;
|
||
|
|
u32 : 32;
|
||
|
|
u64 isliba;
|
||
|
|
u64 osliba;
|
||
|
|
u32 : 32;
|
||
|
|
u32 : 32;
|
||
|
|
u8 ebcnam[8];
|
||
|
|
/* private: */
|
||
|
|
u8 res[88];
|
||
|
|
/* public: */
|
||
|
|
u8 parm[QDIO_MAX_BUFFERS_PER_Q];
|
||
|
|
} __attribute__ ((packed, aligned(256)));
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct slibe - storage list information block element (SLIBE)
|
||
|
|
* @parms: implementation dependent parameters
|
||
|
|
*/
|
||
|
|
struct slibe {
|
||
|
|
u64 parms;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct qaob - queue asynchronous operation block
|
||
|
|
* @res0: reserved parameters
|
||
|
|
* @res1: reserved parameter
|
||
|
|
* @res2: reserved parameter
|
||
|
|
* @res3: reserved parameter
|
||
|
|
* @aorc: asynchronous operation return code
|
||
|
|
* @flags: internal flags
|
||
|
|
* @cbtbs: control block type
|
||
|
|
* @sb_count: number of storage blocks
|
||
|
|
* @sba: storage block element addresses
|
||
|
|
* @dcount: size of storage block elements
|
||
|
|
* @user0: user defineable value
|
||
|
|
* @res4: reserved paramater
|
||
|
|
* @user1: user defineable value
|
||
|
|
* @user2: user defineable value
|
||
|
|
*/
|
||
|
|
struct qaob {
|
||
|
|
u64 res0[6];
|
||
|
|
u8 res1;
|
||
|
|
u8 res2;
|
||
|
|
u8 res3;
|
||
|
|
u8 aorc;
|
||
|
|
u8 flags;
|
||
|
|
u16 cbtbs;
|
||
|
|
u8 sb_count;
|
||
|
|
u64 sba[QDIO_MAX_ELEMENTS_PER_BUFFER];
|
||
|
|
u16 dcount[QDIO_MAX_ELEMENTS_PER_BUFFER];
|
||
|
|
u64 user0;
|
||
|
|
u64 res4[2];
|
||
|
|
u64 user1;
|
||
|
|
u64 user2;
|
||
|
|
} __attribute__ ((packed, aligned(256)));
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct slib - storage list information block (SLIB)
|
||
|
|
* @nsliba: next SLIB address (if any)
|
||
|
|
* @sla: SL address
|
||
|
|
* @slsba: SLSB address
|
||
|
|
* @slibe: SLIB elements
|
||
|
|
*/
|
||
|
|
struct slib {
|
||
|
|
u64 nsliba;
|
||
|
|
u64 sla;
|
||
|
|
u64 slsba;
|
||
|
|
/* private: */
|
||
|
|
u8 res[1000];
|
||
|
|
/* public: */
|
||
|
|
struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q];
|
||
|
|
} __attribute__ ((packed, aligned(2048)));
|
||
|
|
|
||
|
|
#define SBAL_EFLAGS_LAST_ENTRY 0x40
|
||
|
|
#define SBAL_EFLAGS_CONTIGUOUS 0x20
|
||
|
|
#define SBAL_EFLAGS_FIRST_FRAG 0x04
|
||
|
|
#define SBAL_EFLAGS_MIDDLE_FRAG 0x08
|
||
|
|
#define SBAL_EFLAGS_LAST_FRAG 0x0c
|
||
|
|
#define SBAL_EFLAGS_MASK 0x6f
|
||
|
|
|
||
|
|
#define SBAL_SFLAGS0_PCI_REQ 0x40
|
||
|
|
#define SBAL_SFLAGS0_DATA_CONTINUATION 0x20
|
||
|
|
|
||
|
|
/* Awesome OpenFCP extensions */
|
||
|
|
#define SBAL_SFLAGS0_TYPE_STATUS 0x00
|
||
|
|
#define SBAL_SFLAGS0_TYPE_WRITE 0x08
|
||
|
|
#define SBAL_SFLAGS0_TYPE_READ 0x10
|
||
|
|
#define SBAL_SFLAGS0_TYPE_WRITE_READ 0x18
|
||
|
|
#define SBAL_SFLAGS0_MORE_SBALS 0x04
|
||
|
|
#define SBAL_SFLAGS0_COMMAND 0x02
|
||
|
|
#define SBAL_SFLAGS0_LAST_SBAL 0x00
|
||
|
|
#define SBAL_SFLAGS0_ONLY_SBAL SBAL_SFLAGS0_COMMAND
|
||
|
|
#define SBAL_SFLAGS0_MIDDLE_SBAL SBAL_SFLAGS0_MORE_SBALS
|
||
|
|
#define SBAL_SFLAGS0_FIRST_SBAL (SBAL_SFLAGS0_MORE_SBALS | SBAL_SFLAGS0_COMMAND)
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct qdio_buffer_element - SBAL entry
|
||
|
|
* @eflags: SBAL entry flags
|
||
|
|
* @scount: SBAL count
|
||
|
|
* @sflags: whole SBAL flags
|
||
|
|
* @length: length
|
||
|
|
* @addr: address
|
||
|
|
*/
|
||
|
|
struct qdio_buffer_element {
|
||
|
|
u8 eflags;
|
||
|
|
/* private: */
|
||
|
|
u8 res1;
|
||
|
|
/* public: */
|
||
|
|
u8 scount;
|
||
|
|
u8 sflags;
|
||
|
|
u32 length;
|
||
|
|
void *addr;
|
||
|
|
} __attribute__ ((packed, aligned(16)));
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct qdio_buffer - storage block address list (SBAL)
|
||
|
|
* @element: SBAL entries
|
||
|
|
*/
|
||
|
|
struct qdio_buffer {
|
||
|
|
struct qdio_buffer_element element[QDIO_MAX_ELEMENTS_PER_BUFFER];
|
||
|
|
} __attribute__ ((packed, aligned(256)));
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct sl_element - storage list entry
|
||
|
|
* @sbal: absolute SBAL address
|
||
|
|
*/
|
||
|
|
struct sl_element {
|
||
|
|
u64 sbal;
|
||
|
|
} __attribute__ ((packed));
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct sl - storage list (SL)
|
||
|
|
* @element: SL entries
|
||
|
|
*/
|
||
|
|
struct sl {
|
||
|
|
struct sl_element element[QDIO_MAX_BUFFERS_PER_Q];
|
||
|
|
} __attribute__ ((packed, aligned(1024)));
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct slsb - storage list state block (SLSB)
|
||
|
|
* @val: state per buffer
|
||
|
|
*/
|
||
|
|
struct slsb {
|
||
|
|
u8 val[QDIO_MAX_BUFFERS_PER_Q];
|
||
|
|
} __attribute__ ((packed, aligned(256)));
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct qdio_outbuf_state - SBAL related asynchronous operation information
|
||
|
|
* (for communication with upper layer programs)
|
||
|
|
* (only required for use with completion queues)
|
||
|
|
* @flags: flags indicating state of buffer
|
||
|
|
* @aob: pointer to QAOB used for the particular SBAL
|
||
|
|
* @user: pointer to upper layer program's state information related to SBAL
|
||
|
|
* (stored in user1 data of QAOB)
|
||
|
|
*/
|
||
|
|
struct qdio_outbuf_state {
|
||
|
|
u8 flags;
|
||
|
|
struct qaob *aob;
|
||
|
|
void *user;
|
||
|
|
};
|
||
|
|
|
||
|
|
#define QDIO_OUTBUF_STATE_FLAG_PENDING 0x01
|
||
|
|
|
||
|
|
#define CHSC_AC1_INITIATE_INPUTQ 0x80
|
||
|
|
|
||
|
|
|
||
|
|
/* qdio adapter-characteristics-1 flag */
|
||
|
|
#define AC1_SIGA_INPUT_NEEDED 0x40 /* process input queues */
|
||
|
|
#define AC1_SIGA_OUTPUT_NEEDED 0x20 /* process output queues */
|
||
|
|
#define AC1_SIGA_SYNC_NEEDED 0x10 /* ask hypervisor to sync */
|
||
|
|
#define AC1_AUTOMATIC_SYNC_ON_THININT 0x08 /* set by hypervisor */
|
||
|
|
#define AC1_AUTOMATIC_SYNC_ON_OUT_PCI 0x04 /* set by hypervisor */
|
||
|
|
#define AC1_SC_QEBSM_AVAILABLE 0x02 /* available for subchannel */
|
||
|
|
#define AC1_SC_QEBSM_ENABLED 0x01 /* enabled for subchannel */
|
||
|
|
|
||
|
|
#define CHSC_AC2_MULTI_BUFFER_AVAILABLE 0x0080
|
||
|
|
#define CHSC_AC2_MULTI_BUFFER_ENABLED 0x0040
|
||
|
|
#define CHSC_AC2_DATA_DIV_AVAILABLE 0x0010
|
||
|
|
#define CHSC_AC2_DATA_DIV_ENABLED 0x0002
|
||
|
|
|
||
|
|
#define CHSC_AC3_FORMAT2_CQ_AVAILABLE 0x8000
|
||
|
|
|
||
|
|
struct qdio_ssqd_desc {
|
||
|
|
u8 flags;
|
||
|
|
u8:8;
|
||
|
|
u16 sch;
|
||
|
|
u8 qfmt;
|
||
|
|
u8 parm;
|
||
|
|
u8 qdioac1;
|
||
|
|
u8 sch_class;
|
||
|
|
u8 pcnt;
|
||
|
|
u8 icnt;
|
||
|
|
u8:8;
|
||
|
|
u8 ocnt;
|
||
|
|
u8:8;
|
||
|
|
u8 mbccnt;
|
||
|
|
u16 qdioac2;
|
||
|
|
u64 sch_token;
|
||
|
|
u8 mro;
|
||
|
|
u8 mri;
|
||
|
|
u16 qdioac3;
|
||
|
|
u16:16;
|
||
|
|
u8:8;
|
||
|
|
u8 mmwc;
|
||
|
|
} __attribute__ ((packed));
|
||
|
|
|
||
|
|
/* params are: ccw_device, qdio_error, queue_number,
|
||
|
|
first element processed, number of elements processed, int_parm */
|
||
|
|
typedef void qdio_handler_t(struct ccw_device *, unsigned int, int,
|
||
|
|
int, int, unsigned long);
|
||
|
|
|
||
|
|
/* qdio errors reported to the upper-layer program */
|
||
|
|
#define QDIO_ERROR_ACTIVATE 0x0001
|
||
|
|
#define QDIO_ERROR_GET_BUF_STATE 0x0002
|
||
|
|
#define QDIO_ERROR_SET_BUF_STATE 0x0004
|
||
|
|
#define QDIO_ERROR_SLSB_STATE 0x0100
|
||
|
|
|
||
|
|
#define QDIO_ERROR_FATAL 0x00ff
|
||
|
|
#define QDIO_ERROR_TEMPORARY 0xff00
|
||
|
|
|
||
|
|
/* for qdio_cleanup */
|
||
|
|
#define QDIO_FLAG_CLEANUP_USING_CLEAR 0x01
|
||
|
|
#define QDIO_FLAG_CLEANUP_USING_HALT 0x02
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct qdio_initialize - qdio initialization data
|
||
|
|
* @cdev: associated ccw device
|
||
|
|
* @q_format: queue format
|
||
|
|
* @adapter_name: name for the adapter
|
||
|
|
* @qib_param_field_format: format for qib_parm_field
|
||
|
|
* @qib_param_field: pointer to 128 bytes or NULL, if no param field
|
||
|
|
* @qib_rflags: rflags to set
|
||
|
|
* @input_slib_elements: pointer to no_input_qs * 128 words of data or NULL
|
||
|
|
* @output_slib_elements: pointer to no_output_qs * 128 words of data or NULL
|
||
|
|
* @no_input_qs: number of input queues
|
||
|
|
* @no_output_qs: number of output queues
|
||
|
|
* @input_handler: handler to be called for input queues
|
||
|
|
* @output_handler: handler to be called for output queues
|
||
|
|
* @queue_start_poll_array: polling handlers (one per input queue or NULL)
|
||
|
|
* @int_parm: interruption parameter
|
||
|
|
* @input_sbal_addr_array: address of no_input_qs * 128 pointers
|
||
|
|
* @output_sbal_addr_array: address of no_output_qs * 128 pointers
|
||
|
|
* @output_sbal_state_array: no_output_qs * 128 state info (for CQ or NULL)
|
||
|
|
*/
|
||
|
|
struct qdio_initialize {
|
||
|
|
struct ccw_device *cdev;
|
||
|
|
unsigned char q_format;
|
||
|
|
unsigned char qdr_ac;
|
||
|
|
unsigned char adapter_name[8];
|
||
|
|
unsigned int qib_param_field_format;
|
||
|
|
unsigned char *qib_param_field;
|
||
|
|
unsigned char qib_rflags;
|
||
|
|
unsigned long *input_slib_elements;
|
||
|
|
unsigned long *output_slib_elements;
|
||
|
|
unsigned int no_input_qs;
|
||
|
|
unsigned int no_output_qs;
|
||
|
|
qdio_handler_t *input_handler;
|
||
|
|
qdio_handler_t *output_handler;
|
||
|
|
void (**queue_start_poll_array) (struct ccw_device *, int,
|
||
|
|
unsigned long);
|
||
|
|
int scan_threshold;
|
||
|
|
unsigned long int_parm;
|
||
|
|
void **input_sbal_addr_array;
|
||
|
|
void **output_sbal_addr_array;
|
||
|
|
struct qdio_outbuf_state *output_sbal_state_array;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* enum qdio_brinfo_entry_type - type of address entry for qdio_brinfo_desc()
|
||
|
|
* @l3_ipv6_addr: entry contains IPv6 address
|
||
|
|
* @l3_ipv4_addr: entry contains IPv4 address
|
||
|
|
* @l2_addr_lnid: entry contains MAC address and VLAN ID
|
||
|
|
*/
|
||
|
|
enum qdio_brinfo_entry_type {l3_ipv6_addr, l3_ipv4_addr, l2_addr_lnid};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct qdio_brinfo_entry_XXX - Address entry for qdio_brinfo_desc()
|
||
|
|
* @nit: Network interface token
|
||
|
|
* @addr: Address of one of the three types
|
||
|
|
*
|
||
|
|
* The struct is passed to the callback function by qdio_brinfo_desc()
|
||
|
|
*/
|
||
|
|
struct qdio_brinfo_entry_l3_ipv6 {
|
||
|
|
u64 nit;
|
||
|
|
struct { unsigned char _s6_addr[16]; } addr;
|
||
|
|
} __packed;
|
||
|
|
struct qdio_brinfo_entry_l3_ipv4 {
|
||
|
|
u64 nit;
|
||
|
|
struct { uint32_t _s_addr; } addr;
|
||
|
|
} __packed;
|
||
|
|
struct qdio_brinfo_entry_l2 {
|
||
|
|
u64 nit;
|
||
|
|
struct { u8 mac[6]; u16 lnid; } addr_lnid;
|
||
|
|
} __packed;
|
||
|
|
|
||
|
|
#define QDIO_STATE_INACTIVE 0x00000002 /* after qdio_cleanup */
|
||
|
|
#define QDIO_STATE_ESTABLISHED 0x00000004 /* after qdio_establish */
|
||
|
|
#define QDIO_STATE_ACTIVE 0x00000008 /* after qdio_activate */
|
||
|
|
#define QDIO_STATE_STOPPED 0x00000010 /* after queues went down */
|
||
|
|
|
||
|
|
#define QDIO_FLAG_SYNC_INPUT 0x01
|
||
|
|
#define QDIO_FLAG_SYNC_OUTPUT 0x02
|
||
|
|
#define QDIO_FLAG_PCI_OUT 0x10
|
||
|
|
|
||
|
|
int qdio_alloc_buffers(struct qdio_buffer **buf, unsigned int count);
|
||
|
|
void qdio_free_buffers(struct qdio_buffer **buf, unsigned int count);
|
||
|
|
void qdio_reset_buffers(struct qdio_buffer **buf, unsigned int count);
|
||
|
|
|
||
|
|
extern int qdio_allocate(struct qdio_initialize *);
|
||
|
|
extern int qdio_establish(struct qdio_initialize *);
|
||
|
|
extern int qdio_activate(struct ccw_device *);
|
||
|
|
extern void qdio_release_aob(struct qaob *);
|
||
|
|
extern int do_QDIO(struct ccw_device *, unsigned int, int, unsigned int,
|
||
|
|
unsigned int);
|
||
|
|
extern int qdio_start_irq(struct ccw_device *, int);
|
||
|
|
extern int qdio_stop_irq(struct ccw_device *, int);
|
||
|
|
extern int qdio_get_next_buffers(struct ccw_device *, int, int *, int *);
|
||
|
|
extern int qdio_shutdown(struct ccw_device *, int);
|
||
|
|
extern int qdio_free(struct ccw_device *);
|
||
|
|
extern int qdio_get_ssqd_desc(struct ccw_device *, struct qdio_ssqd_desc *);
|
||
|
|
extern int qdio_pnso_brinfo(struct subchannel_id schid,
|
||
|
|
int cnc, u16 *response,
|
||
|
|
void (*cb)(void *priv, enum qdio_brinfo_entry_type type,
|
||
|
|
void *entry),
|
||
|
|
void *priv);
|
||
|
|
|
||
|
|
#endif /* __QDIO_H__ */
|