2 * Copyright (c) 1999,2000 Michael Smith
3 * Copyright (c) 2000 BSDi
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * Copyright (c) 2002 Eric Moore
28 * Copyright (c) 2002 LSI Logic Corporation
29 * All rights reserved.
31 * Redistribution and use in source and binary forms, with or without
32 * modification, are permitted provided that the following conditions
34 * 1. Redistributions of source code must retain the above copyright
35 * notice, this list of conditions and the following disclaimer.
36 * 2. Redistributions in binary form must reproduce the above copyright
37 * notice, this list of conditions and the following disclaimer in the
38 * documentation and/or other materials provided with the distribution.
39 * 3. The party using or redistributing the source code and binary forms
40 * agrees to the disclaimer below and the terms and conditions set forth
43 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * $FreeBSD: src/sys/dev/amr/amrvar.h,v 1.2.2.5 2002/12/20 15:12:04 emoore Exp $
58 #if __FreeBSD_version >= 500005
59 # include <sys/taskqueue.h>
63 # define debug(level, fmt, args...) do {if (level <= AMR_DEBUG) printf("%s: " fmt "\n", __func__ , ##args);} while(0)
64 # define debug_called(level) do {if (level <= AMR_DEBUG) printf("%s: called\n", __func__);} while(0)
66 # define debug(level, fmt, args...)
67 # define debug_called(level)
69 #define xdebug(fmt, args...) printf("%s: " fmt "\n", __func__ , ##args)
72 * Per-logical-drive datastructure
80 /* synthetic geometry */
90 * Due to the difficulty of using the zone allocator to create a new
91 * zone from within a module, we use our own clustering to reduce
92 * memory wastage due to allocating lots of these small structures.
94 * 16k gives us a little under 200 command structures, which should
95 * normally be plenty. We will grab more if we need them.
98 #define AMR_CMD_CLUSTERSIZE (16 * 1024)
101 * Per-command control structure.
105 TAILQ_ENTRY(amr_command) ac_link;
107 struct amr_softc *ac_sc;
109 int ac_status; /* command completion status */
110 struct amr_mailbox ac_mailbox;
112 #define AMR_CMD_DATAIN (1<<0)
113 #define AMR_CMD_DATAOUT (1<<1)
114 #define AMR_CMD_CCB_DATAIN (1<<2)
115 #define AMR_CMD_CCB_DATAOUT (1<<3)
116 #define AMR_CMD_PRIORITY (1<<4)
117 #define AMR_CMD_MAPPED (1<<5)
118 #define AMR_CMD_SLEEP (1<<6)
119 #define AMR_CMD_BUSY (1<<7)
125 bus_dmamap_t ac_dmamap;
126 u_int32_t ac_dataphys;
129 size_t ac_ccb_length;
130 bus_dmamap_t ac_ccb_dmamap;
131 u_int32_t ac_ccb_dataphys;
133 void (* ac_complete)(struct amr_command *ac);
137 struct amr_command_cluster
139 TAILQ_ENTRY(amr_command_cluster) acc_link;
140 struct amr_command acc_command[0];
143 #define AMR_CMD_CLUSTERCOUNT ((AMR_CMD_CLUSTERSIZE - sizeof(struct amr_command_cluster)) / \
144 sizeof(struct amr_command))
147 * Per-controller-instance data
151 /* bus attachments */
153 struct resource *amr_reg; /* control registers */
154 bus_space_handle_t amr_bhandle;
155 bus_space_tag_t amr_btag;
156 bus_dma_tag_t amr_parent_dmat; /* parent DMA tag */
157 bus_dma_tag_t amr_buffer_dmat; /* data buffer DMA tag */
158 struct resource *amr_irq; /* interrupt */
162 volatile struct amr_mailbox *amr_mailbox;
163 volatile struct amr_mailbox64 *amr_mailbox64;
164 u_int32_t amr_mailboxphys;
165 bus_dma_tag_t amr_mailbox_dmat;
166 bus_dmamap_t amr_mailbox_dmamap;
168 /* scatter/gather lists and their controller-visible mappings */
169 struct amr_sgentry *amr_sgtable; /* s/g lists */
170 u_int32_t amr_sgbusaddr; /* s/g table base address in bus space */
171 bus_dma_tag_t amr_sg_dmat; /* s/g buffer DMA tag */
172 bus_dmamap_t amr_sg_dmamap; /* map for s/g buffers */
174 /* controller limits and features */
175 int amr_maxio; /* maximum number of I/O transactions */
176 int amr_maxdrives; /* max number of logical drives */
177 int amr_maxchan; /* count of SCSI channels */
179 /* connected logical drives */
180 struct amr_logdrive amr_drive[AMR_MAXLD];
182 /* controller state */
184 #define AMR_STATE_OPEN (1<<0)
185 #define AMR_STATE_SUSPEND (1<<1)
186 #define AMR_STATE_INTEN (1<<2)
187 #define AMR_STATE_SHUTDOWN (1<<3)
189 /* per-controller queues */
190 struct bio_queue_head amr_bioq; /* pending I/O with no commands */
191 TAILQ_HEAD(,amr_command) amr_ready; /* commands ready to be submitted */
192 struct amr_command *amr_busycmd[AMR_MAXCMD];
194 TAILQ_HEAD(,amr_command) amr_completed;
195 TAILQ_HEAD(,amr_command) amr_freecmds;
196 TAILQ_HEAD(,amr_command_cluster) amr_cmd_clusters;
198 /* CAM attachments for passthrough */
199 struct cam_sim *amr_cam_sim[AMR_MAX_CHANNELS];
200 TAILQ_HEAD(, ccb_hdr) amr_cam_ccbq;
205 /* controller type-specific support */
207 #define AMR_TYPE_QUARTZ (1<<0)
208 #define AMR_IS_QUARTZ(sc) ((sc)->amr_type & AMR_TYPE_QUARTZ)
209 #define AMR_TYPE_40LD (1<<1)
210 #define AMR_IS_40LD(sc) ((sc)->amr_type & AMR_TYPE_40LD)
211 int (* amr_submit_command)(struct amr_softc *sc);
212 int (* amr_get_work)(struct amr_softc *sc, struct amr_mailbox *mbsave);
213 int (*amr_poll_command)(struct amr_command *ac);
214 int support_ext_cdb; /* greater than 10 byte cdb support */
217 struct intr_config_hook amr_ich; /* wait-for-interrupts probe hook */
218 struct callout_handle amr_timeout; /* periodic status check */
219 #if __FreeBSD_version >= 500005
220 struct task amr_task_complete; /* deferred-completion task */
225 * Interface between bus connections and driver core.
227 extern int amr_attach(struct amr_softc *sc);
228 extern void amr_free(struct amr_softc *sc);
229 extern int amr_flush(struct amr_softc *sc);
230 extern int amr_done(struct amr_softc *sc);
231 extern void amr_startio(struct amr_softc *sc);
234 * Command buffer allocation.
236 extern struct amr_command *amr_alloccmd(struct amr_softc *sc);
237 extern void amr_releasecmd(struct amr_command *ac);
242 extern int amr_cam_attach(struct amr_softc *sc);
243 extern void amr_cam_detach(struct amr_softc *sc);
244 extern int amr_cam_command(struct amr_softc *sc, struct amr_command **acp);
247 * MegaRAID logical disk driver
253 struct amr_softc *amrd_controller;
254 struct amr_logdrive *amrd_drive;
255 struct disk amrd_disk;
256 struct devstat amrd_stats;
259 #define AMRD_OPEN (1<<0) /* drive is open (can't detach) */
263 * Interface between driver core and disk driver (should be using a bus?)
265 extern int amr_submit_bio(struct amr_softc *sc, struct bio *bio);
266 extern void amrd_intr(void *data);
268 /********************************************************************************
269 * Enqueue/dequeue functions
272 amr_enqueue_bio(struct amr_softc *sc, struct bio *bio)
277 bioq_insert_tail(&sc->amr_bioq, bio);
281 static __inline struct bio *
282 amr_dequeue_bio(struct amr_softc *sc)
288 if ((bio = bioq_first(&sc->amr_bioq)) != NULL)
289 bioq_remove(&sc->amr_bioq, bio);
295 amr_enqueue_ready(struct amr_command *ac)
300 TAILQ_INSERT_TAIL(&ac->ac_sc->amr_ready, ac, ac_link);
305 amr_requeue_ready(struct amr_command *ac)
310 TAILQ_INSERT_HEAD(&ac->ac_sc->amr_ready, ac, ac_link);
314 static __inline struct amr_command *
315 amr_dequeue_ready(struct amr_softc *sc)
317 struct amr_command *ac;
321 if ((ac = TAILQ_FIRST(&sc->amr_ready)) != NULL)
322 TAILQ_REMOVE(&sc->amr_ready, ac, ac_link);
328 amr_enqueue_completed(struct amr_command *ac)
333 TAILQ_INSERT_TAIL(&ac->ac_sc->amr_completed, ac, ac_link);
337 static __inline struct amr_command *
338 amr_dequeue_completed(struct amr_softc *sc)
340 struct amr_command *ac;
344 if ((ac = TAILQ_FIRST(&sc->amr_completed)) != NULL)
345 TAILQ_REMOVE(&sc->amr_completed, ac, ac_link);
351 amr_enqueue_free(struct amr_command *ac)
356 TAILQ_INSERT_TAIL(&ac->ac_sc->amr_freecmds, ac, ac_link);
360 static __inline struct amr_command *
361 amr_dequeue_free(struct amr_softc *sc)
363 struct amr_command *ac;
367 if ((ac = TAILQ_FIRST(&sc->amr_freecmds)) != NULL)
368 TAILQ_REMOVE(&sc->amr_freecmds, ac, ac_link);