cissvar.h revision 87011
187011Smsmith/*- 287011Smsmith * Copyright (c) 2001 Michael Smith 387011Smsmith * All rights reserved. 487011Smsmith * 587011Smsmith * Redistribution and use in source and binary forms, with or without 687011Smsmith * modification, are permitted provided that the following conditions 787011Smsmith * are met: 887011Smsmith * 1. Redistributions of source code must retain the above copyright 987011Smsmith * notice, this list of conditions and the following disclaimer. 1087011Smsmith * 2. Redistributions in binary form must reproduce the above copyright 1187011Smsmith * notice, this list of conditions and the following disclaimer in the 1287011Smsmith * documentation and/or other materials provided with the distribution. 1387011Smsmith * 1487011Smsmith * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1587011Smsmith * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1687011Smsmith * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1787011Smsmith * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1887011Smsmith * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1987011Smsmith * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2087011Smsmith * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2187011Smsmith * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2287011Smsmith * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2387011Smsmith * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2487011Smsmith * SUCH DAMAGE. 2587011Smsmith * 2687011Smsmith * $FreeBSD: head/sys/dev/ciss/cissvar.h 87011 2001-11-27 23:08:37Z msmith $ 2787011Smsmith */ 2887011Smsmith 2987011Smsmith/* 3087011Smsmith * CISS adapter driver datastructures 3187011Smsmith */ 3287011Smsmith 3387011Smsmith/************************************************************************ 3487011Smsmith * Tunable parameters 3587011Smsmith */ 3687011Smsmith 3787011Smsmith/* 3887011Smsmith * There is no guaranteed upper bound on the number of concurrent 3987011Smsmith * commands an adapter may claim to support. Cap it at a reasonable 4087011Smsmith * value. 4187011Smsmith */ 4287011Smsmith#define CISS_MAX_REQUESTS 256 4387011Smsmith 4487011Smsmith/* 4587011Smsmith * Maximum number of logical drives we support. 4687011Smsmith */ 4787011Smsmith#define CISS_MAX_LOGICAL 15 4887011Smsmith 4987011Smsmith/* 5087011Smsmith * Interrupt reduction can be controlled by tuning the interrupt 5187011Smsmith * coalesce delay and count paramters. The delay (in microseconds) 5287011Smsmith * defers delivery of interrupts to increase the chance of there being 5387011Smsmith * more than one completed command ready when the interrupt is 5487011Smsmith * delivered. The count expedites the delivery of the interrupt when 5587011Smsmith * the given number of commands are ready. 5687011Smsmith * 5787011Smsmith * If the delay is set to 0, interrupts are delivered immediately. 5887011Smsmith */ 5987011Smsmith#define CISS_INTERRUPT_COALESCE_DELAY 1000 6087011Smsmith#define CISS_INTERRUPT_COALESCE_COUNT 16 6187011Smsmith 6287011Smsmith/* 6387011Smsmith * Heartbeat routine timeout in seconds. Note that since event 6487011Smsmith * handling is performed on a callback basis, we don't need this to 6587011Smsmith * run very often. 6687011Smsmith */ 6787011Smsmith#define CISS_HEARTBEAT_RATE 10 6887011Smsmith 6987011Smsmith/* 7087011Smsmith * Maximum number of events we will queue for a monitoring utility. 7187011Smsmith */ 7287011Smsmith#define CISS_MAX_EVENTS 32 7387011Smsmith 7487011Smsmith/************************************************************************ 7587011Smsmith * Command queue statistics 7687011Smsmith */ 7787011Smsmith 7887011Smsmith#define CISSQ_FREE 0 7987011Smsmith#define CISSQ_BUSY 1 8087011Smsmith#define CISSQ_COMPLETE 2 8187011Smsmith#define CISSQ_COUNT 3 8287011Smsmith 8387011Smsmithstruct ciss_qstat 8487011Smsmith{ 8587011Smsmith u_int32_t q_length; 8687011Smsmith u_int32_t q_max; 8787011Smsmith}; 8887011Smsmith 8987011Smsmith/************************************************************************ 9087011Smsmith * Driver version. Only really significant to the ACU interface. 9187011Smsmith */ 9287011Smsmith#define CISS_DRIVER_VERSION 20011009 9387011Smsmith 9487011Smsmith/************************************************************************ 9587011Smsmith * Driver data structures 9687011Smsmith */ 9787011Smsmith 9887011Smsmith/* 9987011Smsmith * Each command issued to the adapter is managed by a request 10087011Smsmith * structure. 10187011Smsmith */ 10287011Smsmithstruct ciss_request 10387011Smsmith{ 10487011Smsmith TAILQ_ENTRY(ciss_request) cr_link; 10587011Smsmith int cr_onq; /* which queue we are on */ 10687011Smsmith 10787011Smsmith struct ciss_softc *cr_sc; /* controller softc */ 10887011Smsmith void *cr_data; /* data buffer */ 10987011Smsmith u_int32_t cr_length; /* data length */ 11087011Smsmith bus_dmamap_t cr_datamap; /* DMA map for data */ 11187011Smsmith int cr_tag; 11287011Smsmith int cr_flags; 11387011Smsmith#define CISS_REQ_MAPPED (1<<0) /* data mapped */ 11487011Smsmith#define CISS_REQ_SLEEP (1<<1) /* submitter sleeping */ 11587011Smsmith#define CISS_REQ_POLL (1<<2) /* submitter polling */ 11687011Smsmith#define CISS_REQ_DATAOUT (1<<3) /* data host->adapter */ 11787011Smsmith#define CISS_REQ_DATAIN (1<<4) /* data adapter->host */ 11887011Smsmith 11987011Smsmith void (* cr_complete)(struct ciss_request *); 12087011Smsmith void *cr_private; 12187011Smsmith}; 12287011Smsmith 12387011Smsmith/* 12487011Smsmith * The adapter command structure is defined with a zero-length 12587011Smsmith * scatter/gather list size. In practise, we want space for a 12687011Smsmith * scatter-gather list, and we also want to avoid having commands 12787011Smsmith * cross page boundaries. 12887011Smsmith * 12987011Smsmith * Note that 512 bytes yields 28 scatter/gather entries, or the 13087011Smsmith * ability to map (26 * PAGE_SIZE) + 2 bytes of data. On x86, this is 13187011Smsmith * 104kB. 256 bytes would only yield 12 entries, giving a mere 40kB, 13287011Smsmith * too small. 13387011Smsmith */ 13487011Smsmith 13587011Smsmith#define CISS_COMMAND_ALLOC_SIZE 512 /* XXX tune to get sensible s/g list length */ 13687011Smsmith#define CISS_COMMAND_SG_LENGTH ((CISS_COMMAND_ALLOC_SIZE - sizeof(struct ciss_command)) \ 13787011Smsmith / sizeof(struct ciss_sg_entry)) 13887011Smsmith 13987011Smsmith/* 14087011Smsmith * Per-logical-drive data. 14187011Smsmith */ 14287011Smsmithstruct ciss_ldrive 14387011Smsmith{ 14487011Smsmith union ciss_device_address cl_address; 14587011Smsmith 14687011Smsmith int cl_status; 14787011Smsmith#define CISS_LD_NONEXISTENT 0 14887011Smsmith#define CISS_LD_ONLINE 1 14987011Smsmith#define CISS_LD_OFFLINE 2 15087011Smsmith 15187011Smsmith struct ciss_bmic_id_ldrive *cl_ldrive; 15287011Smsmith struct ciss_bmic_id_lstatus *cl_lstatus; 15387011Smsmith 15487011Smsmith char cl_name[16]; /* device name */ 15587011Smsmith}; 15687011Smsmith 15787011Smsmith/* 15887011Smsmith * Per-adapter data 15987011Smsmith */ 16087011Smsmithstruct ciss_softc 16187011Smsmith{ 16287011Smsmith /* bus connections */ 16387011Smsmith device_t ciss_dev; /* bus attachment */ 16487011Smsmith dev_t ciss_dev_t; /* control device */ 16587011Smsmith 16687011Smsmith struct resource *ciss_regs_resource; /* register interface window */ 16787011Smsmith int ciss_regs_rid; /* resource ID */ 16887011Smsmith bus_space_handle_t ciss_regs_bhandle; /* bus space handle */ 16987011Smsmith bus_space_tag_t ciss_regs_btag; /* bus space tag */ 17087011Smsmith 17187011Smsmith struct resource *ciss_cfg_resource; /* config struct interface window */ 17287011Smsmith int ciss_cfg_rid; /* resource ID */ 17387011Smsmith struct ciss_config_table *ciss_cfg; /* config table in adapter memory */ 17487011Smsmith struct ciss_bmic_id_table *ciss_id; /* ID table in host memory */ 17587011Smsmith u_int32_t ciss_heartbeat; /* last heartbeat value */ 17687011Smsmith int ciss_heart_attack; /* number of times we have seen this value */ 17787011Smsmith 17887011Smsmith struct resource *ciss_irq_resource; /* interrupt */ 17987011Smsmith int ciss_irq_rid; /* resource ID */ 18087011Smsmith void *ciss_intr; /* interrupt handle */ 18187011Smsmith 18287011Smsmith bus_dma_tag_t ciss_parent_dmat; /* parent DMA tag */ 18387011Smsmith bus_dma_tag_t ciss_buffer_dmat; /* data buffer/command DMA tag */ 18487011Smsmith 18587011Smsmith u_int32_t ciss_interrupt_mask; /* controller interrupt mask bits */ 18687011Smsmith 18787011Smsmith int ciss_max_requests; 18887011Smsmith struct ciss_request ciss_request[CISS_MAX_REQUESTS]; /* requests */ 18987011Smsmith void *ciss_command; /* command structures */ 19087011Smsmith bus_dma_tag_t ciss_command_dmat; /* command DMA tag */ 19187011Smsmith bus_dmamap_t ciss_command_map; /* command DMA map */ 19287011Smsmith u_int32_t ciss_command_phys; /* command array base address */ 19387011Smsmith TAILQ_HEAD(,ciss_request) ciss_free; /* requests available for reuse */ 19487011Smsmith TAILQ_HEAD(,ciss_request) ciss_busy; /* requests in the adapter */ 19587011Smsmith TAILQ_HEAD(,ciss_request) ciss_complete; /* requests which have been returned by the adapter */ 19687011Smsmith 19787011Smsmith struct callout_handle ciss_periodic; /* periodic event handling */ 19887011Smsmith struct ciss_request *ciss_periodic_notify; /* notify callback request */ 19987011Smsmith 20087011Smsmith struct ciss_notify ciss_notify[CISS_MAX_EVENTS]; 20187011Smsmith int ciss_notify_head; /* saved-event ringbuffer */ 20287011Smsmith int ciss_notify_tail; 20387011Smsmith 20487011Smsmith struct ciss_ldrive ciss_logical[CISS_MAX_LOGICAL]; 20587011Smsmith 20687011Smsmith struct cam_devq *ciss_cam_devq; 20787011Smsmith struct cam_sim *ciss_cam_sim; 20887011Smsmith struct cam_path *ciss_cam_path; 20987011Smsmith 21087011Smsmith int ciss_flags; 21187011Smsmith#define CISS_FLAG_NOTIFY_OK (1<<0) /* notify command running OK */ 21287011Smsmith#define CISS_FLAG_CONTROL_OPEN (1<<1) /* control device is open */ 21387011Smsmith#define CISS_FLAG_ABORTING (1<<2) /* driver is going away */ 21487011Smsmith#define CISS_FLAG_RUNNING (1<<3) /* driver is running (interrupts usable) */ 21587011Smsmith 21687011Smsmith#define CISS_FLAG_FAKE_SYNCH (1<<16) /* needs SYNCHRONISE_CACHE faked */ 21787011Smsmith#define CISS_FLAG_BMIC_ABORT (1<<17) /* use BMIC command to abort Notify on Event */ 21887011Smsmith 21987011Smsmith struct ciss_qstat ciss_qstat[CISSQ_COUNT]; /* queue statistics */ 22087011Smsmith}; 22187011Smsmith 22287011Smsmith/* 22387011Smsmith * Given a request tag, find the corresponding command in virtual or 22487011Smsmith * physical space. 22587011Smsmith * 22687011Smsmith * The arithmetic here is due to the allocation of ciss_command structures 22787011Smsmith * inside CISS_COMMAND_ALLOC_SIZE blocks. See the comment at the definition 22887011Smsmith * of CISS_COMMAND_ALLOC_SIZE above. 22987011Smsmith */ 23087011Smsmith#define CISS_FIND_COMMAND(cr) \ 23187011Smsmith (struct ciss_command *)((u_int8_t *)(cr)->cr_sc->ciss_command + \ 23287011Smsmith ((cr)->cr_tag * CISS_COMMAND_ALLOC_SIZE)) 23387011Smsmith#define CISS_FIND_COMMANDPHYS(cr) ((cr)->cr_sc->ciss_command_phys + \ 23487011Smsmith ((cr)->cr_tag * CISS_COMMAND_ALLOC_SIZE)) 23587011Smsmith 23687011Smsmith/************************************************************************ 23787011Smsmith * Debugging/diagnostic output. 23887011Smsmith */ 23987011Smsmith 24087011Smsmith/* 24187011Smsmith * Debugging levels: 24287011Smsmith * 0 - quiet, only emit warnings 24387011Smsmith * 1 - talkative, log major events, but nothing on the I/O path 24487011Smsmith * 2 - noisy, log events on the I/O path 24587011Smsmith * 3 - extremely noisy, log items in loops 24687011Smsmith */ 24787011Smsmith#ifdef CISS_DEBUG 24887011Smsmith# define debug(level, fmt, args...) \ 24987011Smsmith do { \ 25087011Smsmith if (level <= CISS_DEBUG) printf("%s: " fmt "\n", __FUNCTION__ , ##args); \ 25187011Smsmith } while(0) 25287011Smsmith# define debug_called(level) \ 25387011Smsmith do { \ 25487011Smsmith if (level <= CISS_DEBUG) printf(__FUNCTION__ ": called\n"); \ 25587011Smsmith } while(0) 25687011Smsmith# define debug_struct(s) printf(" SIZE %s: %d\n", #s, sizeof(struct s)) 25787011Smsmith# define debug_union(s) printf(" SIZE %s: %d\n", #s, sizeof(union s)) 25887011Smsmith# define debug_type(s) printf(" SIZE %s: %d\n", #s, sizeof(s)) 25987011Smsmith# define debug_field(s, f) printf(" OFFSET %s.%s: %d\n", #s, #f, ((int)&(((struct s *)0)->f))) 26087011Smsmith# define debug_const(c) printf(" CONST %s %d/0x%x\n", #c, c, c); 26187011Smsmith#else 26287011Smsmith# define debug(level, fmt, args...) 26387011Smsmith# define debug_called(level) 26487011Smsmith# define debug_struct(s) 26587011Smsmith# define debug_union(s) 26687011Smsmith# define debug_type(s) 26787011Smsmith# define debug_field(s, f) 26887011Smsmith# define debug_const(c) 26987011Smsmith#endif 27087011Smsmith 27187011Smsmith#define ciss_printf(sc, fmt, args...) device_printf(sc->ciss_dev, fmt , ##args) 27287011Smsmith 27387011Smsmith/************************************************************************ 27487011Smsmith * Queue primitives 27587011Smsmith */ 27687011Smsmith 27787011Smsmith#define CISSQ_ADD(sc, qname) \ 27887011Smsmith do { \ 27987011Smsmith struct ciss_qstat *qs = &(sc)->ciss_qstat[qname]; \ 28087011Smsmith \ 28187011Smsmith qs->q_length++; \ 28287011Smsmith if (qs->q_length > qs->q_max) \ 28387011Smsmith qs->q_max = qs->q_length; \ 28487011Smsmith } while(0) 28587011Smsmith 28687011Smsmith#define CISSQ_REMOVE(sc, qname) (sc)->ciss_qstat[qname].q_length-- 28787011Smsmith#define CISSQ_INIT(sc, qname) \ 28887011Smsmith do { \ 28987011Smsmith sc->ciss_qstat[qname].q_length = 0; \ 29087011Smsmith sc->ciss_qstat[qname].q_max = 0; \ 29187011Smsmith } while(0) 29287011Smsmith 29387011Smsmith 29487011Smsmith#define CISSQ_REQUEST_QUEUE(name, index) \ 29587011Smsmithstatic __inline void \ 29687011Smsmithciss_initq_ ## name (struct ciss_softc *sc) \ 29787011Smsmith{ \ 29887011Smsmith TAILQ_INIT(&sc->ciss_ ## name); \ 29987011Smsmith CISSQ_INIT(sc, index); \ 30087011Smsmith} \ 30187011Smsmithstatic __inline void \ 30287011Smsmithciss_enqueue_ ## name (struct ciss_request *cr) \ 30387011Smsmith{ \ 30487011Smsmith int s; \ 30587011Smsmith \ 30687011Smsmith s = splcam(); \ 30787011Smsmith TAILQ_INSERT_TAIL(&cr->cr_sc->ciss_ ## name, cr, cr_link); \ 30887011Smsmith CISSQ_ADD(cr->cr_sc, index); \ 30987011Smsmith cr->cr_onq = index; \ 31087011Smsmith splx(s); \ 31187011Smsmith} \ 31287011Smsmithstatic __inline void \ 31387011Smsmithciss_requeue_ ## name (struct ciss_request *cr) \ 31487011Smsmith{ \ 31587011Smsmith int s; \ 31687011Smsmith \ 31787011Smsmith s = splcam(); \ 31887011Smsmith TAILQ_INSERT_HEAD(&cr->cr_sc->ciss_ ## name, cr, cr_link); \ 31987011Smsmith CISSQ_ADD(cr->cr_sc, index); \ 32087011Smsmith cr->cr_onq = index; \ 32187011Smsmith splx(s); \ 32287011Smsmith} \ 32387011Smsmithstatic __inline struct ciss_request * \ 32487011Smsmithciss_dequeue_ ## name (struct ciss_softc *sc) \ 32587011Smsmith{ \ 32687011Smsmith struct ciss_request *cr; \ 32787011Smsmith int s; \ 32887011Smsmith \ 32987011Smsmith s = splcam(); \ 33087011Smsmith if ((cr = TAILQ_FIRST(&sc->ciss_ ## name)) != NULL) { \ 33187011Smsmith TAILQ_REMOVE(&sc->ciss_ ## name, cr, cr_link); \ 33287011Smsmith CISSQ_REMOVE(sc, index); \ 33387011Smsmith cr->cr_onq = -1; \ 33487011Smsmith } \ 33587011Smsmith splx(s); \ 33687011Smsmith return(cr); \ 33787011Smsmith} \ 33887011Smsmithstatic __inline int \ 33987011Smsmithciss_remove_ ## name (struct ciss_request *cr) \ 34087011Smsmith{ \ 34187011Smsmith int s, error; \ 34287011Smsmith \ 34387011Smsmith s = splcam(); \ 34487011Smsmith if (cr->cr_onq != index) { \ 34587011Smsmith printf("request on queue %d (expected %d)\n", cr->cr_onq, index);\ 34687011Smsmith error = 1; \ 34787011Smsmith } else { \ 34887011Smsmith TAILQ_REMOVE(&cr->cr_sc->ciss_ ## name, cr, cr_link); \ 34987011Smsmith CISSQ_REMOVE(cr->cr_sc, index); \ 35087011Smsmith cr->cr_onq = -1; \ 35187011Smsmith error = 0; \ 35287011Smsmith } \ 35387011Smsmith splx(s); \ 35487011Smsmith return(error); \ 35587011Smsmith} \ 35687011Smsmithstruct hack 35787011Smsmith 35887011SmsmithCISSQ_REQUEST_QUEUE(free, CISSQ_FREE); 35987011SmsmithCISSQ_REQUEST_QUEUE(busy, CISSQ_BUSY); 36087011SmsmithCISSQ_REQUEST_QUEUE(complete, CISSQ_COMPLETE); 36187011Smsmith 36287011Smsmith/******************************************************************************** 36387011Smsmith * space-fill a character string 36487011Smsmith */ 36587011Smsmithstatic __inline void 36687011Smsmithpadstr(char *targ, const char *src, int len) 36787011Smsmith{ 36887011Smsmith while (len-- > 0) { 36987011Smsmith if (*src != 0) { 37087011Smsmith *targ++ = *src++; 37187011Smsmith } else { 37287011Smsmith *targ++ = ' '; 37387011Smsmith } 37487011Smsmith } 37587011Smsmith} 376