544359b9a2
CCB is returned to the caller. - Make code paths that can use twe_ccb_alloc_wait() use it, and assert that a CCB is always returned from that function. - Assert that a CCB is always returned when allocating the reserved CCB for an AEN fetch.
173 lines
5.7 KiB
C
173 lines
5.7 KiB
C
/* $NetBSD: twevar.h,v 1.20 2003/09/23 23:50:05 thorpej Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2000, 2001, 2002 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Andrew Doran.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _PCI_TWEVAR_H_
|
|
#define _PCI_TWEVAR_H_
|
|
|
|
#include "locators.h"
|
|
|
|
#define TWE_MAX_QUEUECNT 129
|
|
|
|
/* Callbacks from controller to array. */
|
|
struct twe_callbacks {
|
|
void (*tcb_openings)(struct device *, int);
|
|
};
|
|
|
|
/* Per-array drive information. */
|
|
struct twe_drive {
|
|
uint32_t td_size;
|
|
uint8_t td_type;
|
|
uint8_t td_stripe;
|
|
|
|
struct device *td_dev;
|
|
const struct twe_callbacks *td_callbacks;
|
|
};
|
|
|
|
/* Per-controller state. */
|
|
struct twe_softc {
|
|
struct device sc_dv;
|
|
bus_space_tag_t sc_iot;
|
|
bus_space_handle_t sc_ioh;
|
|
bus_dma_tag_t sc_dmat;
|
|
bus_dmamap_t sc_dmamap;
|
|
void *sc_ih;
|
|
caddr_t sc_cmds;
|
|
bus_addr_t sc_cmds_paddr;
|
|
int sc_nccbs;
|
|
struct twe_ccb *sc_ccbs;
|
|
SIMPLEQ_HEAD(, twe_ccb) sc_ccb_queue;
|
|
SLIST_HEAD(, twe_ccb) sc_ccb_freelist;
|
|
int sc_flags;
|
|
int sc_openings;
|
|
int sc_nunits;
|
|
struct twe_drive sc_units[TWE_MAX_UNITS];
|
|
|
|
/* Asynchronous event notification queue for management tools. */
|
|
#define TWE_AEN_Q_LENGTH 256
|
|
uint16_t sc_aen_queue[TWE_AEN_Q_LENGTH];
|
|
int sc_aen_head;
|
|
int sc_aen_tail;
|
|
};
|
|
#define TWEF_OPEN 0x01 /* control device is opened */
|
|
#define TWEF_AENQ_WAIT 0x02 /* someone waiting for AENs */
|
|
#define TWEF_AEN 0x04 /* AEN fetch in progress */
|
|
#define TWEF_WAIT_CCB 0x08 /* someone waiting for a CCB */
|
|
|
|
/* Optional per-command context. */
|
|
struct twe_context {
|
|
void (*tx_handler)(struct twe_ccb *, int);
|
|
void *tx_context;
|
|
struct device *tx_dv;
|
|
};
|
|
|
|
/* Command control block. */
|
|
struct twe_ccb {
|
|
union {
|
|
SIMPLEQ_ENTRY(twe_ccb) simpleq;
|
|
SLIST_ENTRY(twe_ccb) slist;
|
|
} ccb_chain;
|
|
struct twe_cmd *ccb_cmd;
|
|
int ccb_cmdid;
|
|
int ccb_flags;
|
|
void *ccb_data;
|
|
int ccb_datasize;
|
|
vaddr_t ccb_abuf;
|
|
bus_dmamap_t ccb_dmamap_xfer;
|
|
struct twe_context ccb_tx;
|
|
};
|
|
#define TWE_CCB_DATA_IN 0x01 /* Map describes inbound xfer */
|
|
#define TWE_CCB_DATA_OUT 0x02 /* Map describes outbound xfer */
|
|
#define TWE_CCB_COMPLETE 0x04 /* Command completed */
|
|
#define TWE_CCB_ACTIVE 0x08 /* Command active */
|
|
#define TWE_CCB_AEN 0x10 /* For AEN retrieval */
|
|
#define TWE_CCB_ALLOCED 0x20 /* CCB allocated */
|
|
|
|
struct twe_attach_args {
|
|
int twea_unit;
|
|
};
|
|
|
|
#define tweacf_unit cf_loc[TWECF_UNIT]
|
|
|
|
struct twe_ccb *twe_ccb_alloc(struct twe_softc *, int);
|
|
struct twe_ccb *twe_ccb_alloc_wait(struct twe_softc *, int);
|
|
void twe_ccb_enqueue(struct twe_softc *sc, struct twe_ccb *ccb);
|
|
void twe_ccb_free(struct twe_softc *sc, struct twe_ccb *);
|
|
int twe_ccb_map(struct twe_softc *, struct twe_ccb *);
|
|
int twe_ccb_poll(struct twe_softc *, struct twe_ccb *, int);
|
|
int twe_ccb_submit(struct twe_softc *, struct twe_ccb *);
|
|
void twe_ccb_unmap(struct twe_softc *, struct twe_ccb *);
|
|
|
|
int twe_param_get(struct twe_softc *, int, int, size_t,
|
|
void (*)(struct twe_ccb *, int), struct twe_param **);
|
|
int twe_param_get_1(struct twe_softc *, int, int, uint8_t *);
|
|
int twe_param_get_2(struct twe_softc *, int, int, uint16_t *);
|
|
int twe_param_get_4(struct twe_softc *, int, int, uint32_t *);
|
|
|
|
void twe_register_callbacks(struct twe_softc *, int,
|
|
const struct twe_callbacks *);
|
|
|
|
static __inline__ size_t twe_get_maxsegs(void) {
|
|
size_t max_segs = ((MAXPHYS + PAGE_SIZE - 1) / PAGE_SIZE) + 1;
|
|
#ifdef TWE_SG_SIZE
|
|
if (TWE_SG_SIZE < max_segs)
|
|
max_segs = TWE_SG_SIZE;
|
|
#endif
|
|
return max_segs;
|
|
}
|
|
|
|
static __inline__ size_t twe_get_maxxfer(size_t maxsegs) {
|
|
return (maxsegs - 1) * PAGE_SIZE;
|
|
}
|
|
|
|
/*
|
|
* Structures used to convert numeric codes to strings.
|
|
*/
|
|
struct twe_code_table {
|
|
uint32_t code;
|
|
const char *string;
|
|
};
|
|
extern const struct twe_code_table twe_table_status[];
|
|
extern const struct twe_code_table twe_table_unitstate[];
|
|
extern const struct twe_code_table twe_table_unittype[];
|
|
extern const struct twe_code_table twe_table_stripedepth[];
|
|
extern const struct twe_code_table twe_table_aen[];
|
|
|
|
const char *twe_describe_code(const struct twe_code_table *, uint32_t);
|
|
|
|
#endif /* !_PCI_TWEVAR_H_ */
|