Current Path : /sys/dev/wds/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/dev/wds/wd7000.c |
/*- * Copyright (c) 1994 Ludd, University of Lule}, Sweden. * Copyright (c) 2000 Sergey A. Babkin * All rights reserved. * * Written by Olof Johansson (offe@ludd.luth.se) 1995. * Based on code written by Theo de Raadt (deraadt@fsa.ca). * Resurrected, ported to CAM and generally cleaned up by Sergey Babkin * <babkin@bellatlantic.net> or <babkin@users.sourceforge.net>. * * 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 at Ludd, University of Lule} * and by the FreeBSD project. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. * */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/dev/wds/wd7000.c 233024 2012-03-16 08:46:58Z scottl $"); /* All bugs are subject to removal without further notice */ /* * offe 01/07/95 * * This version of the driver _still_ doesn't implement scatter/gather for the * WD7000-FASST2. This is due to the fact that my controller doesn't seem to * support it. That, and the lack of documentation makes it impossible for me * to implement it. What I've done instead is allocated a local buffer, * contiguous buffer big enough to handle the requests. I haven't seen any * read/write bigger than 64k, so I allocate a buffer of 64+16k. The data * that needs to be DMA'd to/from the controller is copied to/from that * buffer before/after the command is sent to the card. * * SB 03/30/00 * * An intermediate buffer is needed anyway to make sure that the buffer is * located under 16MB, otherwise it's out of reach of ISA cards. I've added * optimizations to allocate space in buffer in fragments. */ /* * Jumpers: (see The Ref(TM) for more info) * W1/W2 - interrupt selection: * W1 (1-2) IRQ3, (3-4) IRQ4, (5-6) IRQ5, (7-8) IRQ7, (9-10) IRQ9 * W2 (21-22) IRQ10, (19-20) IRQ11, (17-18) IRQ12, (15-16) IRQ14, (13-14) IRQ15 * * W2 - DRQ/DACK selection, DRQ and DACK must be the same: * (5-6) DRQ5 (11-12) DACK5 * (3-4) DRQ6 (9-10) DACK6 * (1-2) DRQ7 (7-8) DACK7 * * W3 - I/O address selection: open pair of pins (OFF) means 1, jumpered (ON) means 0 * pair (1-2) is bit 3, ..., pair (9-10) is bit 7. All the other bits are equal * to the value 0x300. In bitwise representation that would be: * 0 0 1 1 (9-10) (7-8) (5-6) (3-4) (1-2) 0 0 0 * For example, address 0x3C0, bitwise 1111000000 will be represented as: * (9-10) OFF, (7-8) OFF, (5-6) ON, (3-4) ON, (1-2) ON * * W4 - BIOS address: open pair of pins (OFF) means 1, jumpered (ON) means 0 * pair (1-2) is bit 13, ..., pair (7-8) is bit 16. All the other bits are * equal to the value 0xC0000. In bitwise representation that would be: * 1 1 0 (7-8) (5-6) (3-4) (1-2) 0 0000 0000 0000 * For example, address 0xD8000 will be represented as: * (7-8) OFF, (5-6) OFF, (3-4) ON, (1-2) ON * * W98 (on newer cards) - BIOS enabled; on older cards just remove the BIOS * chip to disable it * W99 (on newer cards) - ROM size (1-2) OFF, (3-4) ON * * W5 - terminator power * ON - host supplies term. power * OFF - target supplies term. power * * W6, W9 - floppy support (a bit cryptic): * W6 ON, W9 ON - disabled * W6 OFF, W9 ON - enabled with HardCard only * W6 OFF, W9 OFF - enabled with no hardCard or Combo * * Default: I/O 0x350, IRQ15, DMA6 */ /* * debugging levels: * 0 - disabled * 1 - print debugging messages * 2 - collect debugging messages in an internal log buffer which can be * printed later by calling wds_printlog from DDB * * Both kind of logs are heavy and interact significantly with the timing * of commands, so the observed problems may become invisible if debug * logging is enabled. * * The light-weight logging facility may be enabled by defining * WDS_ENABLE_SMALLOG as 1. It has very little overhead and allows observing * the traces of various race conditions without affectiong them but the log is * quite terse. The small log can be printer from DDB by calling * wds_printsmallog. */ #ifndef WDS_DEBUG #define WDS_DEBUG 0 #endif #ifndef WDS_ENABLE_SMALLOG #define WDS_ENABLE_SMALLOG 0 #endif #include <sys/types.h> #include <sys/param.h> #include <sys/systm.h> #include <sys/errno.h> #include <sys/kernel.h> #include <sys/assym.h> #include <sys/malloc.h> #include <sys/bio.h> #include <sys/buf.h> #include <cam/cam.h> #include <cam/cam_ccb.h> #include <cam/cam_sim.h> #include <cam/cam_xpt_sim.h> #include <cam/cam_debug.h> #include <cam/scsi/scsi_all.h> #include <cam/scsi/scsi_message.h> #include <vm/vm.h> #include <vm/vm_param.h> #include <vm/pmap.h> #include <sys/module.h> #include <sys/bus.h> #include <machine/bus.h> #include <machine/resource.h> #include <sys/rman.h> #include <isa/isavar.h> #include <isa/pnpvar.h> #define WDSTOPHYS(wp, a) ( ((u_long)a) - ((u_long)wp->dx) + ((u_long)wp->dx_p) ) #define WDSTOVIRT(wp, a) ( ((char *)a) - ((char*)wp->dx_p) + ((char *)wp->dx) ) /* 0x10000 (64k) should be enough. But just to be sure... */ #define BUFSIZ 0x12000 /* buffer fragment size, no more than 32 frags per buffer */ #define FRAGSIZ 0x1000 /* WD7000 registers */ #define WDS_STAT 0 /* read */ #define WDS_IRQSTAT 1 /* read */ #define WDS_CMD 0 /* write */ #define WDS_IRQACK 1 /* write */ #define WDS_HCR 2 /* write */ #define WDS_NPORTS 4 /* number of ports used */ /* WDS_STAT (read) defs */ #define WDS_IRQ 0x80 #define WDS_RDY 0x40 #define WDS_REJ 0x20 #define WDS_INIT 0x10 /* WDS_IRQSTAT (read) defs */ #define WDSI_MASK 0xc0 #define WDSI_ERR 0x00 #define WDSI_MFREE 0x80 #define WDSI_MSVC 0xc0 /* WDS_CMD (write) defs */ #define WDSC_NOOP 0x00 #define WDSC_INIT 0x01 #define WDSC_DISUNSOL 0x02 /* disable unsolicited ints */ #define WDSC_ENAUNSOL 0x03 /* enable unsolicited ints */ #define WDSC_IRQMFREE 0x04 /* interrupt on free RQM */ #define WDSC_SCSIRESETSOFT 0x05 /* soft reset */ #define WDSC_SCSIRESETHARD 0x06 /* hard reset ack */ #define WDSC_MSTART(m) (0x80 + (m)) /* start mailbox */ #define WDSC_MMSTART(m) (0xc0 + (m)) /* start all mailboxes */ /* WDS_HCR (write) defs */ #define WDSH_IRQEN 0x08 #define WDSH_DRQEN 0x04 #define WDSH_SCSIRESET 0x02 #define WDSH_ASCRESET 0x01 struct wds_cmd { u_int8_t cmd; u_int8_t targ; u_int8_t scb[12]; u_int8_t stat; u_int8_t venderr; u_int8_t len[3]; u_int8_t data[3]; u_int8_t next[3]; u_int8_t write; u_int8_t xx[6]; }; struct wds_req { struct wds_cmd cmd; union ccb *ccb; enum { WR_DONE = 0x01, WR_SENSE = 0x02 } flags; u_int8_t *buf; /* address of linear data buffer */ u_int32_t mask; /* mask of allocated fragments */ u_int8_t ombn; u_int8_t id; /* number of request */ }; #define WDSX_SCSICMD 0x00 #define WDSX_OPEN_RCVBUF 0x80 #define WDSX_RCV_CMD 0x81 #define WDSX_RCV_DATA 0x82 #define WDSX_RCV_DATASTAT 0x83 #define WDSX_SND_DATA 0x84 #define WDSX_SND_DATASTAT 0x85 #define WDSX_SND_CMDSTAT 0x86 #define WDSX_READINIT 0x88 #define WDSX_READSCSIID 0x89 #define WDSX_SETUNSOLIRQMASK 0x8a #define WDSX_GETUNSOLIRQMASK 0x8b #define WDSX_GETFIRMREV 0x8c #define WDSX_EXECDIAG 0x8d #define WDSX_SETEXECPARM 0x8e #define WDSX_GETEXECPARM 0x8f struct wds_mb { u_int8_t stat; u_int8_t addr[3]; }; /* ICMB status value */ #define ICMB_OK 0x01 #define ICMB_OKERR 0x02 #define ICMB_ETIME 0x04 #define ICMB_ERESET 0x05 #define ICMB_ETARCMD 0x06 #define ICMB_ERESEL 0x80 #define ICMB_ESEL 0x81 #define ICMB_EABORT 0x82 #define ICMB_ESRESET 0x83 #define ICMB_EHRESET 0x84 struct wds_setup { u_int8_t cmd; u_int8_t scsi_id; u_int8_t buson_t; u_int8_t busoff_t; u_int8_t xx; u_int8_t mbaddr[3]; u_int8_t nomb; u_int8_t nimb; }; /* the code depends on equality of these parameters */ #define MAXSIMUL 8 #define WDS_NOMB MAXSIMUL #define WDS_NIMB MAXSIMUL static int fragsiz; static int nfrags; /* structure for data exchange with controller */ struct wdsdx { struct wds_req req[MAXSIMUL]; struct wds_mb ombs[MAXSIMUL]; struct wds_mb imbs[MAXSIMUL]; u_int8_t data[BUFSIZ]; }; /* structure softc */ struct wds { device_t dev; int unit; int addr; int drq; struct cam_sim *sim; /* SIM descriptor for this card */ struct cam_path *path; /* wildcard path for this card */ char want_wdsr; /* resource shortage flag */ u_int32_t data_free; u_int32_t wdsr_free; struct wdsdx *dx; struct wdsdx *dx_p; /* physical address */ struct resource *port_r; int port_rid; struct resource *drq_r; int drq_rid; struct resource *intr_r; int intr_rid; void *intr_cookie; bus_dma_tag_t bustag; bus_dmamap_t busmap; }; #define ccb_wdsr spriv_ptr1 /* for wds request */ static int wds_probe(device_t dev); static int wds_attach(device_t dev); static void wds_intr(struct wds *wp); static void wds_action(struct cam_sim * sim, union ccb * ccb); static void wds_poll(struct cam_sim * sim); static int wds_preinit(struct wds *wp); static int wds_init(struct wds *wp); static void wds_alloc_callback(void *arg, bus_dma_segment_t *seg, int nseg, int error); static void wds_free_resources(struct wds *wp); static struct wds_req *wdsr_alloc(struct wds *wp); static void wds_scsi_io(struct cam_sim * sim, struct ccb_scsiio * csio); static void wdsr_ccb_done(struct wds *wp, struct wds_req *r, union ccb *ccb, u_int32_t status); static void wds_done(struct wds *wp, struct wds_req *r, u_int8_t stat); static int wds_runsense(struct wds *wp, struct wds_req *r); static int wds_getvers(struct wds *wp); static int wds_cmd(int base, u_int8_t * p, int l); static void wds_wait(int reg, int mask, int val); static struct wds_req *cmdtovirt(struct wds *wp, u_int32_t phys); static u_int32_t frag_alloc(struct wds *wp, int size, u_int8_t **res, u_int32_t *maskp); static void frag_free(struct wds *wp, u_int32_t mask); void wds_print(void); #if WDS_ENABLE_SMALLOG==1 static __inline void smallog(char c); void wds_printsmallog(void); #endif /* SMALLOG */ /* SCSI ID of the adapter itself */ #ifndef WDS_HBA_ID #define WDS_HBA_ID 7 #endif #if WDS_DEBUG == 2 #define LOGLINESIZ 81 #define NLOGLINES 300 #define DBX wds_nextlog(), LOGLINESIZ, #define DBG snprintf static char wds_log[NLOGLINES][LOGLINESIZ]; static int logwrite = 0, logread = 0; static char *wds_nextlog(void); void wds_printlog(void); #elif WDS_DEBUG != 0 #define DBX #define DBG printf #else #define DBX #define DBG if(0) printf #endif /* the table of supported bus methods */ static device_method_t wds_isa_methods[] = { DEVMETHOD(device_probe, wds_probe), DEVMETHOD(device_attach, wds_attach), { 0, 0 } }; static driver_t wds_isa_driver = { "wds", wds_isa_methods, sizeof(struct wds), }; static devclass_t wds_devclass; DRIVER_MODULE(wds, isa, wds_isa_driver, wds_devclass, 0, 0); MODULE_DEPEND(wds, isa, 1, 1, 1); MODULE_DEPEND(wds, cam, 1, 1, 1); #if WDS_ENABLE_SMALLOG==1 #define SMALLOGSIZ 512 static char wds_smallog[SMALLOGSIZ]; static char *wds_smallogp = wds_smallog; static char wds_smallogover = 0; static __inline void smallog(char c) { *wds_smallogp = c; if (++wds_smallogp == &wds_smallog[SMALLOGSIZ]) { wds_smallogp = wds_smallog; wds_smallogover = 1; } } #define smallog2(a, b) (smallog(a), smallog(b)) #define smallog3(a, b, c) (smallog(a), smallog(b), smallog(c)) #define smallog4(a, b, c, d) (smallog(a),smallog(b),smallog(c),smallog(d)) void wds_printsmallog(void) { int i; char *p; printf("wds: "); p = wds_smallogover ? wds_smallogp : wds_smallog; i = 0; do { printf("%c", *p); if (++p == &wds_smallog[SMALLOGSIZ]) p = wds_smallog; if (++i == 70) { i = 0; printf("\nwds: "); } } while (p != wds_smallogp); printf("\n"); } #else #define smallog(a) #define smallog2(a, b) #define smallog3(a, b, c) #define smallog4(a, b, c, d) #endif /* SMALLOG */ static int wds_probe(device_t dev) { struct wds *wp; int error = 0; int irq; /* No pnp support */ if (isa_get_vendorid(dev)) return (ENXIO); wp = (struct wds *) device_get_softc(dev); wp->unit = device_get_unit(dev); wp->dev = dev; wp->addr = bus_get_resource_start(dev, SYS_RES_IOPORT, 0 /*rid*/); if (wp->addr == 0 || wp->addr <0x300 || wp->addr > 0x3f8 || wp->addr & 0x7) { device_printf(dev, "invalid port address 0x%x\n", wp->addr); return (ENXIO); } if (bus_set_resource(dev, SYS_RES_IOPORT, 0, wp->addr, WDS_NPORTS) < 0) return (ENXIO); /* get the DRQ */ wp->drq = bus_get_resource_start(dev, SYS_RES_DRQ, 0 /*rid*/); if (wp->drq < 5 || wp->drq > 7) { device_printf(dev, "invalid DRQ %d\n", wp->drq); return (ENXIO); } /* get the IRQ */ irq = bus_get_resource_start(dev, SYS_RES_IRQ, 0 /*rid*/); if (irq < 3) { device_printf(dev, "invalid IRQ %d\n", irq); return (ENXIO); } wp->port_rid = 0; wp->port_r = bus_alloc_resource(dev, SYS_RES_IOPORT, &wp->port_rid, /*start*/ 0, /*end*/ ~0, /*count*/ 0, RF_ACTIVE); if (wp->port_r == NULL) return (ENXIO); error = wds_preinit(wp); /* * We cannot hold resources between probe and * attach as we may never be attached. */ wds_free_resources(wp); return (error); } static int wds_attach(device_t dev) { struct wds *wp; struct cam_devq *devq; struct cam_sim *sim; struct cam_path *pathp; int i; int error = 0; wp = (struct wds *)device_get_softc(dev); wp->port_rid = 0; wp->port_r = bus_alloc_resource(dev, SYS_RES_IOPORT, &wp->port_rid, /*start*/ 0, /*end*/ ~0, /*count*/ 0, RF_ACTIVE); if (wp->port_r == NULL) return (ENXIO); /* We must now release resources on error. */ wp->drq_rid = 0; wp->drq_r = bus_alloc_resource(dev, SYS_RES_DRQ, &wp->drq_rid, /*start*/ 0, /*end*/ ~0, /*count*/ 0, RF_ACTIVE); if (wp->drq_r == NULL) goto bad; wp->intr_rid = 0; wp->intr_r = bus_alloc_resource(dev, SYS_RES_IRQ, &wp->intr_rid, /*start*/ 0, /*end*/ ~0, /*count*/ 0, RF_ACTIVE); if (wp->intr_r == NULL) goto bad; error = bus_setup_intr(dev, wp->intr_r, INTR_TYPE_CAM | INTR_ENTROPY, NULL, (driver_intr_t *)wds_intr, (void *)wp, &wp->intr_cookie); if (error) goto bad; /* now create the memory buffer */ error = bus_dma_tag_create(bus_get_dma_tag(dev), /*alignment*/4, /*boundary*/0, /*lowaddr*/BUS_SPACE_MAXADDR_24BIT, /*highaddr*/ BUS_SPACE_MAXADDR, /*filter*/ NULL, /*filterarg*/ NULL, /*maxsize*/ sizeof(* wp->dx), /*nsegments*/ 1, /*maxsegsz*/ sizeof(* wp->dx), /*flags*/ 0, /*lockfunc*/busdma_lock_mutex, /*lockarg*/&Giant, &wp->bustag); if (error) goto bad; error = bus_dmamem_alloc(wp->bustag, (void **)&wp->dx, /*flags*/ 0, &wp->busmap); if (error) goto bad; bus_dmamap_load(wp->bustag, wp->busmap, (void *)wp->dx, sizeof(* wp->dx), wds_alloc_callback, (void *)&wp->dx_p, /*flags*/0); /* initialize the wds_req structures on this unit */ for(i=0; i<MAXSIMUL; i++) { wp->dx->req[i].id = i; wp->wdsr_free |= 1<<i; } /* initialize the memory buffer allocation for this unit */ if (BUFSIZ / FRAGSIZ > 32) { fragsiz = (BUFSIZ / 32) & ~0x01; /* keep it word-aligned */ device_printf(dev, "data buffer fragment size too small. " "BUFSIZE / FRAGSIZE must be <= 32\n"); } else fragsiz = FRAGSIZ & ~0x01; /* keep it word-aligned */ wp->data_free = 0; nfrags = 0; for (i = fragsiz; i <= BUFSIZ; i += fragsiz) { nfrags++; wp->data_free = (wp->data_free << 1) | 1; } /* complete the hardware initialization */ if (wds_init(wp) != 0) goto bad; if (wds_getvers(wp) == -1) device_printf(dev, "getvers failed\n"); device_printf(dev, "using %d bytes / %d frags for dma buffer\n", BUFSIZ, nfrags); devq = cam_simq_alloc(MAXSIMUL); if (devq == NULL) goto bad; sim = cam_sim_alloc(wds_action, wds_poll, "wds", (void *) wp, wp->unit, &Giant, 1, 1, devq); if (sim == NULL) { cam_simq_free(devq); goto bad; } wp->sim = sim; if (xpt_bus_register(sim, dev, 0) != CAM_SUCCESS) { cam_sim_free(sim, /* free_devq */ TRUE); goto bad; } if (xpt_create_path(&pathp, /* periph */ NULL, cam_sim_path(sim), CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { xpt_bus_deregister(cam_sim_path(sim)); cam_sim_free(sim, /* free_devq */ TRUE); goto bad; } wp->path = pathp; return (0); bad: wds_free_resources(wp); if (error) return (error); else /* exact error is unknown */ return (ENXIO); } /* callback to save the physical address */ static void wds_alloc_callback(void *arg, bus_dma_segment_t *seg, int nseg, int error) { *(bus_addr_t *)arg = seg[0].ds_addr; } static void wds_free_resources(struct wds *wp) { /* check every resource and free if not zero */ /* interrupt handler */ if (wp->intr_r) { bus_teardown_intr(wp->dev, wp->intr_r, wp->intr_cookie); bus_release_resource(wp->dev, SYS_RES_IRQ, wp->intr_rid, wp->intr_r); wp->intr_r = 0; } /* all kinds of memory maps we could have allocated */ if (wp->dx_p) { bus_dmamap_unload(wp->bustag, wp->busmap); wp->dx_p = 0; } if (wp->dx) { /* wp->busmap may be legitimately equal to 0 */ /* the map will also be freed */ bus_dmamem_free(wp->bustag, wp->dx, wp->busmap); wp->dx = 0; } if (wp->bustag) { bus_dma_tag_destroy(wp->bustag); wp->bustag = 0; } /* release all the bus resources */ if (wp->drq_r) { bus_release_resource(wp->dev, SYS_RES_DRQ, wp->drq_rid, wp->drq_r); wp->drq_r = 0; } if (wp->port_r) { bus_release_resource(wp->dev, SYS_RES_IOPORT, wp->port_rid, wp->port_r); wp->port_r = 0; } } /* allocate contiguous fragments from the buffer */ static u_int32_t frag_alloc(struct wds *wp, int size, u_int8_t **res, u_int32_t *maskp) { int i; u_int32_t mask; u_int32_t free; if (size > fragsiz * nfrags) return (CAM_REQ_TOO_BIG); mask = 1; /* always allocate at least 1 fragment */ for (i = fragsiz; i < size; i += fragsiz) mask = (mask << 1) | 1; free = wp->data_free; if(free != 0) { i = ffs(free)-1; /* ffs counts bits from 1 */ for (mask <<= i; i < nfrags; i++) { if ((free & mask) == mask) { wp->data_free &= ~mask; /* mark frags as busy */ *maskp = mask; *res = &wp->dx->data[fragsiz * i]; DBG(DBX "wds%d: allocated buffer mask=0x%x\n", wp->unit, mask); return (CAM_REQ_CMP); } if (mask & 0x80000000) break; mask <<= 1; } } return (CAM_REQUEUE_REQ); /* no free memory now, try later */ } static void frag_free(struct wds *wp, u_int32_t mask) { wp->data_free |= mask; /* mark frags as free */ DBG(DBX "wds%d: freed buffer mask=0x%x\n", wp->unit, mask); } static struct wds_req * wdsr_alloc(struct wds *wp) { struct wds_req *r; int x; int i; r = NULL; x = splcam(); /* anyway most of the time only 1 or 2 commands will * be active because SCSI disconnect is not supported * by hardware, so the search should be fast enough */ i = ffs(wp->wdsr_free) - 1; if(i < 0) { splx(x); return (NULL); } wp->wdsr_free &= ~ (1<<i); r = &wp->dx->req[i]; r->flags = 0; /* reset all flags */ r->ombn = i; /* luckily we have one omb per wdsr */ wp->dx->ombs[i].stat = 1; r->mask = 0; splx(x); smallog3('r', i + '0', r->ombn + '0'); return (r); } static void wds_intr(struct wds *wp) { struct wds_req *rp; struct wds_mb *in; u_int8_t stat; u_int8_t c; int addr = wp->addr; DBG(DBX "wds%d: interrupt [\n", wp->unit); smallog('['); if (inb(addr + WDS_STAT) & WDS_IRQ) { c = inb(addr + WDS_IRQSTAT); if ((c & WDSI_MASK) == WDSI_MSVC) { c = c & ~WDSI_MASK; in = &wp->dx->imbs[c]; rp = cmdtovirt(wp, scsi_3btoul(in->addr)); stat = in->stat; if (rp != NULL) wds_done(wp, rp, stat); else device_printf(wp->dev, "got weird command address %p" "from controller\n", rp); in->stat = 0; } else device_printf(wp->dev, "weird interrupt, irqstat=0x%x\n", c); outb(addr + WDS_IRQACK, 0); } else { smallog('?'); } smallog(']'); DBG(DBX "wds%d: ]\n", wp->unit); } static void wds_done(struct wds *wp, struct wds_req *r, u_int8_t stat) { struct ccb_hdr *ccb_h; struct ccb_scsiio *csio; int status; smallog('d'); if (r->flags & WR_DONE) { device_printf(wp->dev, "request %d reported done twice\n", r->id); smallog2('x', r->id + '0'); return; } smallog(r->id + '0'); ccb_h = &r->ccb->ccb_h; csio = &r->ccb->csio; status = CAM_REQ_CMP_ERR; DBG(DBX "wds%d: %s stat=0x%x c->stat=0x%x c->venderr=0x%x\n", wp->unit, r->flags & WR_SENSE ? "(sense)" : "", stat, r->cmd.stat, r->cmd.venderr); if (r->flags & WR_SENSE) { if (stat == ICMB_OK || (stat == ICMB_OKERR && r->cmd.stat == 0)) { DBG(DBX "wds%d: sense 0x%x\n", wp->unit, r->buf[0]); /* it has the same size now but for future */ bcopy(r->buf, &csio->sense_data, sizeof(struct scsi_sense_data) > csio->sense_len ? csio->sense_len : sizeof(struct scsi_sense_data)); if (sizeof(struct scsi_sense_data) >= csio->sense_len) csio->sense_resid = 0; else csio->sense_resid = csio->sense_len - sizeof(struct scsi_sense_data); status = CAM_AUTOSNS_VALID | CAM_SCSI_STATUS_ERROR; } else { status = CAM_AUTOSENSE_FAIL; } } else { switch (stat) { case ICMB_OK: if (ccb_h) { csio->resid = 0; csio->scsi_status = r->cmd.stat; status = CAM_REQ_CMP; } break; case ICMB_OKERR: if (ccb_h) { csio->scsi_status = r->cmd.stat; if (r->cmd.stat) { if (ccb_h->flags & CAM_DIS_AUTOSENSE) status = CAM_SCSI_STATUS_ERROR; else { if ( wds_runsense(wp, r) == CAM_REQ_CMP ) return; /* in case of error continue with freeing of CCB */ } } else { csio->resid = 0; status = CAM_REQ_CMP; } } break; case ICMB_ETIME: if (ccb_h) status = CAM_SEL_TIMEOUT; break; case ICMB_ERESET: case ICMB_ETARCMD: case ICMB_ERESEL: case ICMB_ESEL: case ICMB_EABORT: case ICMB_ESRESET: case ICMB_EHRESET: if (ccb_h) status = CAM_REQ_CMP_ERR; break; } if (ccb_h && (ccb_h->flags & CAM_DIR_MASK) == CAM_DIR_IN) { /* we accept only virtual addresses in wds_action() */ bcopy(r->buf, csio->data_ptr, csio->dxfer_len); } } r->flags |= WR_DONE; wp->dx->ombs[r->ombn].stat = 0; if (ccb_h) { wdsr_ccb_done(wp, r, r->ccb, status); smallog3('-', ccb_h->target_id + '0', ccb_h->target_lun + '0'); } else { frag_free(wp, r->mask); if (wp->want_wdsr) { wp->want_wdsr = 0; xpt_release_simq(wp->sim, /* run queue */ 1); } wp->wdsr_free |= (1 << r->id); } DBG(DBX "wds%d: request %p done\n", wp->unit, r); } /* command returned bad status, request sense */ static int wds_runsense(struct wds *wp, struct wds_req *r) { u_int8_t c; struct ccb_hdr *ccb_h; ccb_h = &r->ccb->ccb_h; r->flags |= WR_SENSE; scsi_ulto3b(WDSTOPHYS(wp, &r->cmd), wp->dx->ombs[r->ombn].addr); bzero(&r->cmd, sizeof r->cmd); r->cmd.cmd = WDSX_SCSICMD; r->cmd.targ = (ccb_h->target_id << 5) | ccb_h->target_lun; scsi_ulto3b(0, r->cmd.next); r->cmd.scb[0] = REQUEST_SENSE; r->cmd.scb[1] = ccb_h->target_lun << 5; r->cmd.scb[4] = sizeof(struct scsi_sense_data); r->cmd.scb[5] = 0; scsi_ulto3b(WDSTOPHYS(wp, r->buf), r->cmd.data); scsi_ulto3b(sizeof(struct scsi_sense_data), r->cmd.len); r->cmd.write = 0x80; outb(wp->addr + WDS_HCR, WDSH_IRQEN | WDSH_DRQEN); wp->dx->ombs[r->ombn].stat = 1; c = WDSC_MSTART(r->ombn); if (wds_cmd(wp->addr, &c, sizeof c) != 0) { device_printf(wp->dev, "unable to start outgoing sense mbox\n"); wp->dx->ombs[r->ombn].stat = 0; wdsr_ccb_done(wp, r, r->ccb, CAM_AUTOSENSE_FAIL); return CAM_AUTOSENSE_FAIL; } else { DBG(DBX "wds%d: enqueued status cmd 0x%x, r=%p\n", wp->unit, r->cmd.scb[0] & 0xFF, r); /* don't free CCB yet */ smallog3('*', ccb_h->target_id + '0', ccb_h->target_lun + '0'); return CAM_REQ_CMP; } } static int wds_getvers(struct wds *wp) { struct wds_req *r; int base; u_int8_t c; int i; base = wp->addr; r = wdsr_alloc(wp); if (!r) { device_printf(wp->dev, "no request slot available!\n"); return (-1); } r->flags &= ~WR_DONE; r->ccb = NULL; scsi_ulto3b(WDSTOPHYS(wp, &r->cmd), wp->dx->ombs[r->ombn].addr); bzero(&r->cmd, sizeof r->cmd); r->cmd.cmd = WDSX_GETFIRMREV; outb(base + WDS_HCR, WDSH_DRQEN); c = WDSC_MSTART(r->ombn); if (wds_cmd(base, (u_int8_t *) & c, sizeof c)) { device_printf(wp->dev, "version request failed\n"); wp->wdsr_free |= (1 << r->id); wp->dx->ombs[r->ombn].stat = 0; return (-1); } while (1) { i = 0; while ((inb(base + WDS_STAT) & WDS_IRQ) == 0) { DELAY(9000); if (++i == 100) { device_printf(wp->dev, "getvers timeout\n"); return (-1); } } wds_intr(wp); if (r->flags & WR_DONE) { device_printf(wp->dev, "firmware version %d.%02d\n", r->cmd.targ, r->cmd.scb[0]); wp->wdsr_free |= (1 << r->id); return (0); } } } static void wdsr_ccb_done(struct wds *wp, struct wds_req *r, union ccb *ccb, u_int32_t status) { ccb->ccb_h.ccb_wdsr = 0; if (r != NULL) { /* To implement timeouts we would need to know how to abort the * command on controller, and this is a great mystery. * So for now we just pass the responsibility for timeouts * to the controlles itself, it does that reasonably good. */ /* untimeout(_timeout, (caddr_t) hcb, ccb->ccb_h.timeout_ch); */ /* we're about to free a hcb, so the shortage has ended */ frag_free(wp, r->mask); if (wp->want_wdsr && status != CAM_REQUEUE_REQ) { wp->want_wdsr = 0; status |= CAM_RELEASE_SIMQ; smallog('R'); } wp->wdsr_free |= (1 << r->id); } ccb->ccb_h.status = status | (ccb->ccb_h.status & ~(CAM_STATUS_MASK | CAM_SIM_QUEUED)); xpt_done(ccb); } static void wds_scsi_io(struct cam_sim * sim, struct ccb_scsiio * csio) { int unit = cam_sim_unit(sim); struct wds *wp; struct ccb_hdr *ccb_h; struct wds_req *r; int base; u_int8_t c; int error; int n; wp = (struct wds *)cam_sim_softc(sim); ccb_h = &csio->ccb_h; DBG(DBX "wds%d: cmd TARG=%d LUN=%d\n", unit, ccb_h->target_id, ccb_h->target_lun); if (ccb_h->target_id > 7 || ccb_h->target_id == WDS_HBA_ID) { ccb_h->status = CAM_TID_INVALID; xpt_done((union ccb *) csio); return; } if (ccb_h->target_lun > 7) { ccb_h->status = CAM_LUN_INVALID; xpt_done((union ccb *) csio); return; } if (csio->dxfer_len > BUFSIZ) { ccb_h->status = CAM_REQ_TOO_BIG; xpt_done((union ccb *) csio); return; } if (ccb_h->flags & (CAM_CDB_PHYS | CAM_SCATTER_VALID | CAM_DATA_PHYS)) { /* don't support these */ ccb_h->status = CAM_REQ_INVALID; xpt_done((union ccb *) csio); return; } base = wp->addr; /* * this check is mostly for debugging purposes, * "can't happen" normally. */ if(wp->want_wdsr) { DBG(DBX "wds%d: someone already waits for buffer\n", unit); smallog('b'); n = xpt_freeze_simq(sim, /* count */ 1); smallog('0'+n); ccb_h->status = CAM_REQUEUE_REQ; xpt_done((union ccb *) csio); return; } r = wdsr_alloc(wp); if (r == NULL) { device_printf(wp->dev, "no request slot available!\n"); wp->want_wdsr = 1; n = xpt_freeze_simq(sim, /* count */ 1); smallog2('f', '0'+n); ccb_h->status = CAM_REQUEUE_REQ; xpt_done((union ccb *) csio); return; } ccb_h->ccb_wdsr = (void *) r; r->ccb = (union ccb *) csio; switch (error = frag_alloc(wp, csio->dxfer_len, &r->buf, &r->mask)) { case CAM_REQ_CMP: break; case CAM_REQUEUE_REQ: DBG(DBX "wds%d: no data buffer available\n", unit); wp->want_wdsr = 1; n = xpt_freeze_simq(sim, /* count */ 1); smallog2('f', '0'+n); wdsr_ccb_done(wp, r, r->ccb, CAM_REQUEUE_REQ); return; default: DBG(DBX "wds%d: request is too big\n", unit); wdsr_ccb_done(wp, r, r->ccb, error); break; } ccb_h->status |= CAM_SIM_QUEUED; r->flags &= ~WR_DONE; scsi_ulto3b(WDSTOPHYS(wp, &r->cmd), wp->dx->ombs[r->ombn].addr); bzero(&r->cmd, sizeof r->cmd); r->cmd.cmd = WDSX_SCSICMD; r->cmd.targ = (ccb_h->target_id << 5) | ccb_h->target_lun; if (ccb_h->flags & CAM_CDB_POINTER) bcopy(csio->cdb_io.cdb_ptr, &r->cmd.scb, csio->cdb_len < 12 ? csio->cdb_len : 12); else bcopy(csio->cdb_io.cdb_bytes, &r->cmd.scb, csio->cdb_len < 12 ? csio->cdb_len : 12); scsi_ulto3b(csio->dxfer_len, r->cmd.len); if (csio->dxfer_len > 0 && (ccb_h->flags & CAM_DIR_MASK) == CAM_DIR_OUT) { /* we already rejected physical or scattered addresses */ bcopy(csio->data_ptr, r->buf, csio->dxfer_len); } scsi_ulto3b(csio->dxfer_len ? WDSTOPHYS(wp, r->buf) : 0, r->cmd.data); if ((ccb_h->flags & CAM_DIR_MASK) == CAM_DIR_IN) r->cmd.write = 0x80; else r->cmd.write = 0x00; scsi_ulto3b(0, r->cmd.next); outb(base + WDS_HCR, WDSH_IRQEN | WDSH_DRQEN); c = WDSC_MSTART(r->ombn); if (wds_cmd(base, &c, sizeof c) != 0) { device_printf(wp->dev, "unable to start outgoing mbox\n"); wp->dx->ombs[r->ombn].stat = 0; wdsr_ccb_done(wp, r, r->ccb, CAM_RESRC_UNAVAIL); return; } DBG(DBX "wds%d: enqueued cmd 0x%x, r=%p\n", unit, r->cmd.scb[0] & 0xFF, r); smallog3('+', ccb_h->target_id + '0', ccb_h->target_lun + '0'); } static void wds_action(struct cam_sim * sim, union ccb * ccb) { int unit = cam_sim_unit(sim); int s; DBG(DBX "wds%d: action 0x%x\n", unit, ccb->ccb_h.func_code); switch (ccb->ccb_h.func_code) { case XPT_SCSI_IO: s = splcam(); DBG(DBX "wds%d: SCSI IO entered\n", unit); wds_scsi_io(sim, &ccb->csio); DBG(DBX "wds%d: SCSI IO returned\n", unit); splx(s); break; case XPT_RESET_BUS: /* how to do it right ? */ printf("wds%d: reset\n", unit); ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); break; case XPT_ABORT: ccb->ccb_h.status = CAM_UA_ABORT; xpt_done(ccb); break; case XPT_CALC_GEOMETRY: { struct ccb_calc_geometry *ccg; u_int32_t size_mb; u_int32_t secs_per_cylinder; ccg = &ccb->ccg; size_mb = ccg->volume_size / ((1024L * 1024L) / ccg->block_size); ccg->heads = 64; ccg->secs_per_track = 16; secs_per_cylinder = ccg->heads * ccg->secs_per_track; ccg->cylinders = ccg->volume_size / secs_per_cylinder; ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); break; } case XPT_PATH_INQ: /* Path routing inquiry */ { struct ccb_pathinq *cpi = &ccb->cpi; cpi->version_num = 1; /* XXX??? */ cpi->hba_inquiry = 0; /* nothing fancy */ cpi->target_sprt = 0; cpi->hba_misc = 0; cpi->hba_eng_cnt = 0; cpi->max_target = 7; cpi->max_lun = 7; cpi->initiator_id = WDS_HBA_ID; cpi->hba_misc = 0; cpi->bus_id = cam_sim_bus(sim); cpi->base_transfer_speed = 3300; strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); strncpy(cpi->hba_vid, "WD/FDC", HBA_IDLEN); strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); cpi->unit_number = cam_sim_unit(sim); cpi->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); break; } default: ccb->ccb_h.status = CAM_REQ_INVALID; xpt_done(ccb); break; } } static void wds_poll(struct cam_sim * sim) { wds_intr((struct wds *)cam_sim_softc(sim)); } /* part of initialization done in probe() */ /* returns 0 if OK, ENXIO if bad */ static int wds_preinit(struct wds *wp) { int base; int i; base = wp->addr; /* * Sending a command causes the CMDRDY bit to clear. */ outb(base + WDS_CMD, WDSC_NOOP); if (inb(base + WDS_STAT) & WDS_RDY) return (ENXIO); /* * the controller exists. reset and init. */ outb(base + WDS_HCR, WDSH_ASCRESET | WDSH_SCSIRESET); DELAY(30); outb(base + WDS_HCR, 0); if ((inb(base + WDS_STAT) & (WDS_RDY)) != WDS_RDY) { for (i = 0; i < 10; i++) { if ((inb(base + WDS_STAT) & (WDS_RDY)) == WDS_RDY) break; DELAY(40000); } if ((inb(base + WDS_STAT) & (WDS_RDY)) != WDS_RDY) /* probe timeout */ return (ENXIO); } return (0); } /* part of initialization done in attach() */ /* returns 0 if OK, 1 if bad */ static int wds_init(struct wds *wp) { struct wds_setup init; int base; int i; struct wds_cmd wc; base = wp->addr; outb(base + WDS_HCR, WDSH_DRQEN); isa_dmacascade(wp->drq); if ((inb(base + WDS_STAT) & (WDS_RDY)) != WDS_RDY) { for (i = 0; i < 10; i++) { if ((inb(base + WDS_STAT) & (WDS_RDY)) == WDS_RDY) break; DELAY(40000); } if ((inb(base + WDS_STAT) & (WDS_RDY)) != WDS_RDY) /* probe timeout */ return (1); } bzero(&init, sizeof init); init.cmd = WDSC_INIT; init.scsi_id = WDS_HBA_ID; init.buson_t = 24; init.busoff_t = 48; scsi_ulto3b(WDSTOPHYS(wp, &wp->dx->ombs), init.mbaddr); init.xx = 0; init.nomb = WDS_NOMB; init.nimb = WDS_NIMB; wds_wait(base + WDS_STAT, WDS_RDY, WDS_RDY); if (wds_cmd(base, (u_int8_t *) & init, sizeof init) != 0) { device_printf(wp->dev, "wds_cmd init failed\n"); return (1); } wds_wait(base + WDS_STAT, WDS_INIT, WDS_INIT); wds_wait(base + WDS_STAT, WDS_RDY, WDS_RDY); bzero(&wc, sizeof wc); wc.cmd = WDSC_DISUNSOL; if (wds_cmd(base, (char *) &wc, sizeof wc) != 0) { device_printf(wp->dev, "wds_cmd init2 failed\n"); return (1); } return (0); } static int wds_cmd(int base, u_int8_t * p, int l) { int s = splcam(); while (l--) { do { outb(base + WDS_CMD, *p); wds_wait(base + WDS_STAT, WDS_RDY, WDS_RDY); } while (inb(base + WDS_STAT) & WDS_REJ); p++; } wds_wait(base + WDS_STAT, WDS_RDY, WDS_RDY); splx(s); return (0); } static void wds_wait(int reg, int mask, int val) { while ((inb(reg) & mask) != val) ; } static struct wds_req * cmdtovirt(struct wds *wp, u_int32_t phys) { char *a; a = WDSTOVIRT(wp, (uintptr_t)phys); if( a < (char *)&wp->dx->req[0] || a>= (char *)&wp->dx->req[MAXSIMUL]) { device_printf(wp->dev, "weird phys address 0x%x\n", phys); return (NULL); } a -= (int)offsetof(struct wds_req, cmd); /* convert cmd to request */ return ((struct wds_req *)a); } /* for debugging, print out all the data about the status of devices */ void wds_print(void) { int unit; int i; struct wds_req *r; struct wds *wp; for (unit = 0; unit < devclass_get_maxunit(wds_devclass); unit++) { wp = (struct wds *) devclass_get_device(wds_devclass, unit); if (wp == NULL) continue; printf("wds%d: want_wdsr=0x%x stat=0x%x irq=%s irqstat=0x%x\n", unit, wp->want_wdsr, inb(wp->addr + WDS_STAT) & 0xff, (inb(wp->addr + WDS_STAT) & WDS_IRQ) ? "ready" : "no", inb(wp->addr + WDS_IRQSTAT) & 0xff); for (i = 0; i < MAXSIMUL; i++) { r = &wp->dx->req[i]; if( wp->wdsr_free & (1 << r->id) ) { printf("req=%d flg=0x%x ombn=%d ombstat=%d " "mask=0x%x targ=%d lun=%d cmd=0x%x\n", i, r->flags, r->ombn, wp->dx->ombs[r->ombn].stat, r->mask, r->cmd.targ >> 5, r->cmd.targ & 7, r->cmd.scb[0]); } } } } #if WDS_DEBUG == 2 /* create circular log buffer */ static char * wds_nextlog(void) { int n = logwrite; if (++logwrite >= NLOGLINES) logwrite = 0; if (logread == logwrite) if (++logread >= NLOGLINES) logread = 0; return (wds_log[n]); } void wds_printlog(void) { /* print the circular buffer */ int i; for (i = logread; i != logwrite;) { printf("%s", wds_log[i]); if (i == NLOGLINES) i = 0; else i++; } } #endif /* WDS_DEBUG */