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
59 #include <geom/geom_disk.h>
61 #include <sys/mutex.h>
63 #define LSI_DESC_PCI "LSILogic MegaRAID 1.53"
66 # define debug(level, fmt, args...) do {if (level <= AMR_DEBUG) printf("%s: " fmt "\n", __func__ , ##args);} while(0)
67 # define debug_called(level) do {if (level <= AMR_DEBUG) printf("%s: called\n", __func__);} while(0)
69 # define debug(level, fmt, args...) do {} while (0)
70 # define debug_called(level) do {} while (0)
72 #define xdebug(fmt, args...) printf("%s: " fmt "\n", __func__ , ##args)
75 * Per-logical-drive datastructure
83 /* synthetic geometry */
93 * Due to the difficulty of using the zone allocator to create a new
94 * zone from within a module, we use our own clustering to reduce
95 * memory wastage due to allocating lots of these small structures.
97 * 16k gives us a little under 200 command structures, which should
98 * normally be plenty. We will grab more if we need them.
101 #define AMR_CMD_CLUSTERSIZE (16 * 1024)
103 typedef STAILQ_HEAD(, amr_command) ac_qhead_t;
104 typedef STAILQ_ENTRY(amr_command) ac_link_t;
107 struct amr_passthrough ccb_pthru;
108 struct amr_ext_passthrough ccb_epthru;
113 * Per-command control structure.
119 struct amr_softc *ac_sc;
121 int ac_status; /* command completion status */
123 struct amr_sgentry *sg32;
124 struct amr_sg64entry *sg64;
126 u_int32_t ac_sgbusaddr;
127 u_int32_t ac_sg64_lo;
128 u_int32_t ac_sg64_hi;
129 struct amr_mailbox ac_mailbox;
131 #define AMR_CMD_DATAIN (1<<0)
132 #define AMR_CMD_DATAOUT (1<<1)
133 #define AMR_CMD_CCB (1<<2)
134 #define AMR_CMD_PRIORITY (1<<4)
135 #define AMR_CMD_MAPPED (1<<5)
136 #define AMR_CMD_SLEEP (1<<6)
137 #define AMR_CMD_BUSY (1<<7)
138 #define AMR_CMD_SG64 (1<<8)
139 #define AC_IS_SG64(ac) ((ac)->ac_flags & AMR_CMD_SG64)
143 void (* ac_complete)(struct amr_command *ac);
148 bus_dmamap_t ac_dmamap;
149 bus_dmamap_t ac_dma64map;
151 bus_dma_tag_t ac_tag;
152 bus_dmamap_t ac_datamap;
154 uint32_t ac_mb_physaddr;
156 union amr_ccb *ac_ccb;
157 uint32_t ac_ccb_busaddr;
160 struct amr_command_cluster
162 TAILQ_ENTRY(amr_command_cluster) acc_link;
163 struct amr_command acc_command[0];
166 #define AMR_CMD_CLUSTERCOUNT ((AMR_CMD_CLUSTERSIZE - sizeof(struct amr_command_cluster)) / \
167 sizeof(struct amr_command))
170 * Per-controller-instance data
174 /* bus attachments */
176 struct resource *amr_reg; /* control registers */
177 bus_space_handle_t amr_bhandle;
178 bus_space_tag_t amr_btag;
179 bus_dma_tag_t amr_parent_dmat; /* parent DMA tag */
180 bus_dma_tag_t amr_buffer_dmat; /* data buffer DMA tag */
181 bus_dma_tag_t amr_buffer64_dmat;
182 struct resource *amr_irq; /* interrupt */
186 volatile struct amr_mailbox *amr_mailbox;
187 volatile struct amr_mailbox64 *amr_mailbox64;
188 u_int32_t amr_mailboxphys;
189 bus_dma_tag_t amr_mailbox_dmat;
190 bus_dmamap_t amr_mailbox_dmamap;
192 /* scatter/gather lists and their controller-visible mappings */
193 struct amr_sgentry *amr_sgtable; /* s/g lists */
194 struct amr_sg64entry *amr_sg64table; /* 64bit s/g lists */
195 u_int32_t amr_sgbusaddr; /* s/g table base address in bus space */
196 bus_dma_tag_t amr_sg_dmat; /* s/g buffer DMA tag */
197 bus_dmamap_t amr_sg_dmamap; /* map for s/g buffers */
199 union amr_ccb *amr_ccb;
200 uint32_t amr_ccb_busaddr;
201 bus_dma_tag_t amr_ccb_dmat;
202 bus_dmamap_t amr_ccb_dmamap;
204 /* controller limits and features */
205 int amr_nextslot; /* Next slot to use for newly allocated commands */
206 int amr_maxio; /* maximum number of I/O transactions */
207 int amr_maxdrives; /* max number of logical drives */
208 int amr_maxchan; /* count of SCSI channels */
210 /* connected logical drives */
211 struct amr_logdrive amr_drive[AMR_MAXLD];
213 /* controller state */
215 #define AMR_STATE_OPEN (1<<0)
216 #define AMR_STATE_SUSPEND (1<<1)
217 #define AMR_STATE_INTEN (1<<2)
218 #define AMR_STATE_SHUTDOWN (1<<3)
219 #define AMR_STATE_CRASHDUMP (1<<4)
220 #define AMR_STATE_QUEUE_FRZN (1<<5)
221 #define AMR_STATE_LD_DELETE (1<<6)
222 #define AMR_STATE_REMAP_LD (1<<7)
224 /* per-controller queues */
225 struct bio_queue_head amr_bioq; /* pending I/O with no commands */
226 ac_qhead_t amr_ready; /* commands ready to be submitted */
227 struct amr_command *amr_busycmd[AMR_MAXCMD];
229 ac_qhead_t amr_freecmds;
230 TAILQ_HEAD(,amr_command_cluster) amr_cmd_clusters;
232 /* CAM attachments for passthrough */
233 struct cam_sim *amr_cam_sim[AMR_MAX_CHANNELS];
234 TAILQ_HEAD(, ccb_hdr) amr_cam_ccbq;
235 struct cam_devq *amr_cam_devq;
238 struct cdev *amr_dev_t;
239 struct mtx amr_list_lock;
241 /* controller type-specific support */
243 #define AMR_TYPE_QUARTZ (1<<0)
244 #define AMR_IS_QUARTZ(sc) ((sc)->amr_type & AMR_TYPE_QUARTZ)
245 #define AMR_TYPE_40LD (1<<1)
246 #define AMR_IS_40LD(sc) ((sc)->amr_type & AMR_TYPE_40LD)
247 #define AMR_TYPE_SG64 (1<<2)
248 #define AMR_IS_SG64(sc) ((sc)->amr_type & AMR_TYPE_SG64)
249 int (* amr_submit_command)(struct amr_command *ac);
250 int (* amr_get_work)(struct amr_softc *sc, struct amr_mailbox *mbsave);
251 int (*amr_poll_command)(struct amr_command *ac);
252 int (*amr_poll_command1)(struct amr_softc *sc, struct amr_command *ac);
253 int support_ext_cdb; /* greater than 10 byte cdb support */
257 int (*amr_cam_command)(struct amr_softc *sc, struct amr_command **acp);
258 struct intr_config_hook amr_ich; /* wait-for-interrupts probe hook */
259 int amr_allow_vol_config;
260 int amr_linux_no_adapters;
261 int amr_ld_del_supported;
262 struct mtx amr_hw_lock;
266 * Interface between bus connections and driver core.
268 extern int amr_attach(struct amr_softc *sc);
269 extern void amr_free(struct amr_softc *sc);
270 extern int amr_flush(struct amr_softc *sc);
271 extern int amr_done(struct amr_softc *sc);
272 extern void amr_startio(struct amr_softc *sc);
275 * Command buffer allocation.
277 extern struct amr_command *amr_alloccmd(struct amr_softc *sc);
278 extern void amr_releasecmd(struct amr_command *ac);
281 * MegaRAID logical disk driver
286 struct amr_softc *amrd_controller;
287 struct amr_logdrive *amrd_drive;
288 struct disk *amrd_disk;
293 * Interface between driver core and disk driver (should be using a bus?)
295 extern int amr_submit_bio(struct amr_softc *sc, struct bio *bio);
296 extern int amr_dump_blocks(struct amr_softc *sc, int unit, u_int32_t lba, void *data, int blks);
297 extern void amrd_intr(void *data);
299 /********************************************************************************
300 * Enqueue/dequeue functions
303 amr_enqueue_bio(struct amr_softc *sc, struct bio *bio)
306 bioq_insert_tail(&sc->amr_bioq, bio);
309 static __inline struct bio *
310 amr_dequeue_bio(struct amr_softc *sc)
314 if ((bio = bioq_first(&sc->amr_bioq)) != NULL)
315 bioq_remove(&sc->amr_bioq, bio);
320 amr_init_qhead(ac_qhead_t *head)
327 amr_enqueue_ready(struct amr_command *ac)
330 STAILQ_INSERT_TAIL(&ac->ac_sc->amr_ready, ac, ac_link);
334 amr_requeue_ready(struct amr_command *ac)
337 STAILQ_INSERT_HEAD(&ac->ac_sc->amr_ready, ac, ac_link);
340 static __inline struct amr_command *
341 amr_dequeue_ready(struct amr_softc *sc)
343 struct amr_command *ac;
345 if ((ac = STAILQ_FIRST(&sc->amr_ready)) != NULL)
346 STAILQ_REMOVE_HEAD(&sc->amr_ready, ac_link);
351 amr_enqueue_completed(struct amr_command *ac, ac_qhead_t *head)
354 STAILQ_INSERT_TAIL(head, ac, ac_link);
357 static __inline struct amr_command *
358 amr_dequeue_completed(struct amr_softc *sc, ac_qhead_t *head)
360 struct amr_command *ac;
362 if ((ac = STAILQ_FIRST(head)) != NULL)
363 STAILQ_REMOVE_HEAD(head, ac_link);
368 amr_enqueue_free(struct amr_command *ac)
371 STAILQ_INSERT_HEAD(&ac->ac_sc->amr_freecmds, ac, ac_link);
374 static __inline struct amr_command *
375 amr_dequeue_free(struct amr_softc *sc)
377 struct amr_command *ac;
379 if ((ac = STAILQ_FIRST(&sc->amr_freecmds)) != NULL)
380 STAILQ_REMOVE_HEAD(&sc->amr_freecmds, ac_link);