mpt_pci.c

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    1 /* $FreeBSD: releng/5.0/sys/dev/mpt/mpt_pci.c 103914 2002-09-24 21:33:43Z mjacob $ */
    2 /*
    3  * PCI specific probe and attach routines for LSI Fusion Adapters
    4  * FreeBSD Version.
    5  *
    6  * Copyright (c)  2000, 2001 by Greg Ansley
    7  * Partially derived from Matt Jacob's ISP driver.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice immediately at the beginning of the file, without modification,
   14  *    this list of conditions, and the following disclaimer.
   15  * 2. The name of the author may not be used to endorse or promote products
   16  *    derived from this software without specific prior written permission.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
   22  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  */
   30 /*
   31  * Additional Copyright (c) 2002 by Matthew Jacob under same license.
   32  */
   33 
   34 #include <sys/param.h>
   35 #include <sys/systm.h>
   36 #include <sys/kernel.h>
   37 #include <sys/module.h>
   38 #include <sys/bus.h>
   39 
   40 #include <pci/pcireg.h>
   41 #include <pci/pcivar.h>
   42 
   43 #include <machine/bus_memio.h>
   44 #include <machine/bus_pio.h>
   45 #include <machine/bus.h>
   46 #include <machine/resource.h>
   47 #include <sys/rman.h>
   48 #include <sys/malloc.h>
   49 
   50 #include <dev/mpt/mpt_freebsd.h>
   51 
   52 #ifndef PCI_VENDOR_LSI
   53 #define PCI_VENDOR_LSI                  0x1000
   54 #endif
   55 
   56 #ifndef PCI_PRODUCT_LSI_FC909
   57 #define PCI_PRODUCT_LSI_FC909           0x0620
   58 #endif
   59 
   60 #ifndef PCI_PRODUCT_LSI_FC909A
   61 #define PCI_PRODUCT_LSI_FC909A          0x0621
   62 #endif
   63 
   64 #ifndef PCI_PRODUCT_LSI_FC919
   65 #define PCI_PRODUCT_LSI_FC919           0x0624
   66 #endif
   67 
   68 #ifndef PCI_PRODUCT_LSI_FC929
   69 #define PCI_PRODUCT_LSI_FC929           0x0622
   70 #endif
   71 
   72 #ifndef PCI_PRODUCT_LSI_1030
   73 #define PCI_PRODUCT_LSI_1030            0x0030
   74 #endif
   75 
   76 #ifndef PCIM_CMD_SERRESPEN
   77 #define PCIM_CMD_SERRESPEN      0x0100
   78 #endif
   79 
   80 
   81 
   82 #define MEM_MAP_REG     0x14
   83 #define MEM_MAP_SRAM    0x1C
   84 
   85 static int mpt_probe(device_t);
   86 static int mpt_attach(device_t);
   87 static void mpt_free_bus_resources(mpt_softc_t *mpt);
   88 static int mpt_detach(device_t);
   89 static int mpt_shutdown(device_t);
   90 static int mpt_dma_mem_alloc(mpt_softc_t *mpt);
   91 static void mpt_dma_mem_free(mpt_softc_t *mpt);
   92 static void mpt_read_config_regs(mpt_softc_t *mpt);
   93 static void mpt_pci_intr(void *);
   94 
   95 static device_method_t mpt_methods[] = {
   96         /* Device interface */
   97         DEVMETHOD(device_probe,         mpt_probe),
   98         DEVMETHOD(device_attach,        mpt_attach),
   99         DEVMETHOD(device_detach,        mpt_detach),
  100         DEVMETHOD(device_shutdown,      mpt_shutdown),
  101         { 0, 0 }
  102 };
  103 
  104 static driver_t mpt_driver = {
  105         "mpt", mpt_methods, sizeof (mpt_softc_t)
  106 };
  107 static devclass_t mpt_devclass;
  108 DRIVER_MODULE(mpt, pci, mpt_driver, mpt_devclass, 0, 0);
  109 MODULE_VERSION(mpt, 1);
  110 
  111 int
  112 mpt_intr(void *dummy)
  113 {
  114         int nrepl = 0;
  115         u_int32_t reply;
  116         mpt_softc_t *mpt = (mpt_softc_t *)dummy;
  117 
  118         if ((mpt_read(mpt, MPT_OFFSET_INTR_STATUS) & MPT_INTR_REPLY_READY) == 0)
  119                 return (0);
  120         reply = mpt_pop_reply_queue(mpt);
  121         while (reply != MPT_REPLY_EMPTY) {
  122                 nrepl++;
  123                 if (mpt->verbose > 1) {
  124                         if ((reply & MPT_CONTEXT_REPLY) != 0)  {
  125                                 /* Address reply; IOC has something to say */
  126                                 mpt_print_reply(MPT_REPLY_PTOV(mpt, reply));
  127                         } else {
  128                                 /* Context reply ; all went well */
  129                                 mpt_prt(mpt, "context %u reply OK", reply);
  130                         }
  131                 }
  132                 mpt_done(mpt, reply);
  133                 reply = mpt_pop_reply_queue(mpt);
  134         }
  135         return (nrepl != 0);
  136 }
  137 
  138 static int
  139 mpt_probe(device_t dev)
  140 {
  141         char *desc;
  142 
  143         if (pci_get_vendor(dev) != PCI_VENDOR_LSI)
  144                 return (ENXIO);
  145 
  146         switch ((pci_get_device(dev) & ~1)) {
  147         case PCI_PRODUCT_LSI_FC909:
  148                 desc = "LSILogic FC909 FC Adapter";
  149                 break;
  150         case PCI_PRODUCT_LSI_FC909A:
  151                 desc = "LSILogic FC909A FC Adapter";
  152                 break;
  153         case PCI_PRODUCT_LSI_FC919:
  154                 desc = "LSILogic FC919 FC Adapter";
  155                 break;
  156         case PCI_PRODUCT_LSI_FC929:
  157                 desc = "LSILogic FC929 FC Adapter";
  158                 break;
  159         case PCI_PRODUCT_LSI_1030:
  160                 desc = "LSILogic 1030 Ultra4 Adapter";
  161                 break;
  162         default:
  163                 return (ENXIO);
  164         }
  165 
  166         device_set_desc(dev, desc);
  167         return (0);
  168 }
  169 
  170 #ifdef  RELENG_4
  171 static void
  172 mpt_set_options(mpt_softc_t *mpt)
  173 {
  174         int bitmap;
  175 
  176         bitmap = 0;
  177         if (getenv_int("mpt_disable", &bitmap)) {
  178                 if (bitmap & (1 << mpt->unit)) {
  179                         mpt->disabled = 1;
  180                 }
  181         }
  182 
  183         bitmap = 0;
  184         if (getenv_int("mpt_debug", &bitmap)) {
  185                 if (bitmap & (1 << mpt->unit)) {
  186                         mpt->verbose = 2;
  187                 }
  188         }
  189 
  190 }
  191 #else
  192 static void
  193 mpt_set_options(mpt_softc_t *mpt)
  194 {
  195         int tval;
  196 
  197         tval = 0;
  198         if (resource_int_value(device_get_name(mpt->dev),
  199             device_get_unit(mpt->dev), "disable", &tval) == 0 && tval != 0) {
  200                 mpt->disabled = 1;
  201         }
  202         tval = 0;
  203         if (resource_int_value(device_get_name(mpt->dev),
  204             device_get_unit(mpt->dev), "debug", &tval) == 0 && tval != 0) {
  205                 mpt->verbose += tval;
  206         }
  207 }
  208 #endif
  209 
  210 
  211 static void
  212 mpt_link_peer(mpt_softc_t *mpt)
  213 {
  214         mpt_softc_t *mpt2;
  215 
  216         if (mpt->unit == 0) {
  217                 return;
  218         }
  219 
  220         /*
  221          * XXX: depends on probe order
  222          */
  223         mpt2 = (mpt_softc_t *) devclass_get_softc(mpt_devclass, mpt->unit-1);
  224 
  225         if (mpt2 == NULL) {
  226                 return;
  227         }
  228         if (pci_get_vendor(mpt2->dev) != pci_get_vendor(mpt->dev)) {
  229                 return;
  230         }
  231         if (pci_get_device(mpt2->dev) != pci_get_device(mpt->dev)) {
  232                 return;
  233         }
  234         mpt->mpt2 = mpt2;
  235         mpt2->mpt2 = mpt;
  236         if (mpt->verbose) {
  237                 mpt_prt(mpt, "linking with peer (mpt%d)",
  238                     device_get_unit(mpt2->dev));
  239         }
  240 }
  241 
  242 
  243 static int
  244 mpt_attach(device_t dev)
  245 {
  246         int iqd;
  247         u_int32_t data, cmd;
  248         mpt_softc_t *mpt;
  249 
  250         /* Allocate the softc structure */
  251         mpt  = (mpt_softc_t*) device_get_softc(dev);
  252         if (mpt == NULL) {
  253                 device_printf(dev, "cannot allocate softc\n");
  254                 return (ENOMEM);
  255         }
  256         bzero(mpt, sizeof (mpt_softc_t));
  257         switch ((pci_get_device(dev) & ~1)) {
  258         case PCI_PRODUCT_LSI_FC909:
  259         case PCI_PRODUCT_LSI_FC909A:
  260         case PCI_PRODUCT_LSI_FC919:
  261         case PCI_PRODUCT_LSI_FC929:
  262                 mpt->is_fc = 1;
  263                 break;
  264         default:
  265                 break;
  266         }
  267         mpt->dev = dev;
  268         mpt->unit = device_get_unit(dev);
  269         mpt_set_options(mpt);
  270         mpt->verbose += (bootverbose != 0)? 1 : 0;
  271 
  272         /* Make sure memory access decoders are enabled */
  273         cmd = pci_read_config(dev, PCIR_COMMAND, 2);
  274         if ((cmd & PCIM_CMD_MEMEN) == 0) {
  275                 device_printf(dev, "Memory accesses disabled");
  276                 goto bad;
  277         }
  278 
  279         /*
  280          * Make sure that SERR, PERR, WRITE INVALIDATE and BUSMASTER are set.
  281          */
  282         cmd |=
  283             PCIM_CMD_SERRESPEN | PCIM_CMD_PERRESPEN |
  284             PCIM_CMD_BUSMASTEREN | PCIM_CMD_MWRICEN;
  285         pci_write_config(dev, PCIR_COMMAND, cmd, 2);
  286 
  287         /*
  288          * Make sure we've disabled the ROM.
  289          */
  290         data = pci_read_config(dev, PCIR_BIOS, 4);
  291         data &= ~1;
  292         pci_write_config(dev, PCIR_BIOS, data, 4);
  293 
  294 
  295         /*
  296          * Is this part a dual?
  297          * If so, link with our partner (around yet)
  298          */
  299         if ((pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_FC929 ||
  300             (pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_1030) {
  301                 mpt_link_peer(mpt);
  302         }
  303 
  304         /* Set up the memory regions */
  305         /* Allocate kernel virtual memory for the 9x9's Mem0 region */
  306         mpt->pci_reg_id = MEM_MAP_REG;
  307         mpt->pci_reg = bus_alloc_resource(dev, SYS_RES_MEMORY,
  308                         &mpt->pci_reg_id, 0, ~0, 0, RF_ACTIVE);
  309         if (mpt->pci_reg == NULL) {
  310                 device_printf(dev, "unable to map any ports\n");
  311                 goto bad;
  312         }
  313         mpt->pci_st = rman_get_bustag(mpt->pci_reg);
  314         mpt->pci_sh = rman_get_bushandle(mpt->pci_reg);
  315         /*   Get the Physical Address */
  316         mpt->pci_pa = rman_get_start(mpt->pci_reg);
  317 
  318         /* Get a handle to the interrupt */
  319         iqd = 0;
  320         mpt->pci_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &iqd, 0, ~0,
  321             1, RF_ACTIVE | RF_SHAREABLE);
  322         if (mpt->pci_irq == NULL) {
  323                 device_printf(dev, "could not allocate interrupt\n");
  324                 goto bad;
  325         }
  326 
  327         /* Register the interrupt handler */
  328         if (bus_setup_intr(dev, mpt->pci_irq, MPT_IFLAGS, mpt_pci_intr,
  329             mpt, &mpt->ih)) {
  330                 device_printf(dev, "could not setup interrupt\n");
  331                 goto bad;
  332         }
  333 
  334         MPT_LOCK_SETUP(mpt);
  335 
  336         /* Disable interrupts at the part */
  337         mpt_disable_ints(mpt);
  338 
  339         /* Allocate dma memory */
  340         if (mpt_dma_mem_alloc(mpt)) {
  341                 device_printf(dev, "Could not allocate DMA memory\n");
  342                 goto bad;
  343         }
  344 
  345         /*
  346          * Save the PCI config register values
  347          *
  348          * Hard resets are known to screw up the BAR for diagnostic
  349          * memory accesses (Mem1).
  350          *
  351          * Using Mem1 is known to make the chip stop responding to 
  352          * configuration space transfers, so we need to save it now
  353          */
  354 
  355         mpt_read_config_regs(mpt);
  356 
  357         /* Initialize the hardware */
  358         if (mpt->disabled == 0) {
  359                 MPT_LOCK(mpt);
  360                 if (mpt_init(mpt, MPT_DB_INIT_HOST) != 0) {
  361                         MPT_UNLOCK(mpt);
  362                         goto bad;
  363                 }
  364 
  365                 /*
  366                  *  Attach to CAM
  367                  */
  368                 MPTLOCK_2_CAMLOCK(mpt);
  369                 mpt_cam_attach(mpt);
  370                 CAMLOCK_2_MPTLOCK(mpt);
  371                 MPT_UNLOCK(mpt);
  372         }
  373 
  374         return (0);
  375 
  376 bad:
  377         mpt_dma_mem_free(mpt);
  378         mpt_free_bus_resources(mpt);
  379 
  380         /*
  381          * but return zero to preserve unit numbering
  382          */
  383         return (0);
  384 }
  385 
  386 /*
  387  * Free bus resources
  388  */
  389 static void
  390 mpt_free_bus_resources(mpt_softc_t *mpt)
  391 {
  392         if (mpt->ih) {
  393                 bus_teardown_intr(mpt->dev, mpt->pci_irq, mpt->ih);
  394                 mpt->ih = 0;
  395         }
  396 
  397         if (mpt->pci_irq) {
  398                 bus_release_resource(mpt->dev, SYS_RES_IRQ, 0, mpt->pci_irq);
  399                 mpt->pci_irq = 0;
  400         }
  401 
  402         if (mpt->pci_reg) {
  403                 bus_release_resource(mpt->dev, SYS_RES_MEMORY, mpt->pci_reg_id,
  404                         mpt->pci_reg);
  405                 mpt->pci_reg = 0;
  406         }
  407         MPT_LOCK_DESTROY(mpt);
  408 }
  409 
  410 
  411 /*
  412  * Disconnect ourselves from the system.
  413  */
  414 static int
  415 mpt_detach(device_t dev)
  416 {
  417         mpt_softc_t *mpt;
  418         mpt  = (mpt_softc_t*) device_get_softc(dev);
  419 
  420         mpt_prt(mpt, "mpt_detach");
  421 
  422         if (mpt) {
  423                 mpt_disable_ints(mpt);
  424                 mpt_cam_detach(mpt);
  425                 mpt_reset(mpt);
  426                 mpt_dma_mem_free(mpt);
  427                 mpt_free_bus_resources(mpt);
  428         }
  429         return(0);
  430 }
  431 
  432 
  433 /*
  434  * Disable the hardware
  435  */
  436 static int
  437 mpt_shutdown(device_t dev)
  438 {
  439         mpt_softc_t *mpt;
  440         mpt  = (mpt_softc_t*) device_get_softc(dev);
  441 
  442         if (mpt) {
  443                 mpt_reset(mpt);
  444         }
  445         return(0);
  446 }
  447 
  448 
  449 struct imush {
  450         mpt_softc_t *mpt;
  451         int error;
  452         u_int32_t phys;
  453 };
  454 
  455 static void
  456 mpt_map_rquest(void *arg, bus_dma_segment_t *segs, int nseg, int error)
  457 {
  458         struct imush *imushp = (struct imush *) arg;
  459         imushp->error = error;
  460         imushp->phys = segs->ds_addr;
  461 }
  462 
  463 
  464 static int
  465 mpt_dma_mem_alloc(mpt_softc_t *mpt)
  466 {
  467         int i, error;
  468         u_char *vptr;
  469         u_int32_t pptr, end;
  470         size_t len;
  471         struct imush im;
  472         device_t dev = mpt->dev;
  473 
  474         /* Check if we alreay have allocated the reply memory */
  475         if (mpt->reply_phys != NULL) {
  476                 return 0;
  477         }
  478 
  479         len = sizeof (request_t *) * MPT_REQ_MEM_SIZE(mpt);
  480 #ifdef  RELENG_4
  481         mpt->request_pool = (request_t *) malloc(len, M_DEVBUF, M_WAITOK);
  482         if (mpt->request_pool == NULL) {
  483                 device_printf(dev, "cannot allocate request pool\n");
  484                 return (1);
  485         }
  486         bzero(mpt->request_pool, len);
  487 #else
  488         mpt->request_pool = (request_t *)
  489             malloc(len, M_DEVBUF, M_WAITOK | M_ZERO);
  490         if (mpt->request_pool == NULL) {
  491                 device_printf(dev, "cannot allocate request pool\n");
  492                 return (1);
  493         }
  494 #endif
  495 
  496         /*
  497          * Create a dma tag for this device
  498          *
  499          * Align at page boundaries, limit to 32-bit addressing
  500          * (The chip supports 64-bit addressing, but this driver doesn't)
  501          */
  502         if (bus_dma_tag_create(NULL, PAGE_SIZE, 0, BUS_SPACE_MAXADDR_32BIT,
  503             BUS_SPACE_MAXADDR, NULL, NULL, BUS_SPACE_MAXSIZE_32BIT,
  504             BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED, 0,
  505             &mpt->parent_dmat) != 0) {
  506                 device_printf(dev, "cannot create parent dma tag\n");
  507                 return (1);
  508         }
  509 
  510         /* Create a child tag for reply buffers */
  511         if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE,
  512             0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
  513             NULL, NULL, PAGE_SIZE, 1, BUS_SPACE_MAXSIZE_32BIT, 0,
  514             &mpt->reply_dmat) != 0) {
  515                 device_printf(dev, "cannot create a dma tag for replies\n");
  516                 return (1);
  517         }
  518 
  519         /* Allocate some DMA accessable memory for replies */
  520         if (bus_dmamem_alloc(mpt->reply_dmat, (void **)&mpt->reply,
  521             BUS_DMA_NOWAIT, &mpt->reply_dmap) != 0) {
  522                 device_printf(dev, "cannot allocate %d bytes of reply memory\n",
  523                      PAGE_SIZE);
  524                 return (1);
  525         }
  526 
  527         im.mpt = mpt;
  528         im.error = 0;
  529 
  530         /* Load and lock it into "bus space" */
  531         bus_dmamap_load(mpt->reply_dmat, mpt->reply_dmap, mpt->reply,
  532             PAGE_SIZE, mpt_map_rquest, &im, 0);
  533 
  534         if (im.error) {
  535                 device_printf(dev,
  536                     "error %d loading dma map for DMA reply queue\n", im.error);
  537                 return (1);
  538         }
  539         mpt->reply_phys = im.phys;
  540 
  541         /* Create a child tag for data buffers */
  542         if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE,
  543             0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
  544             NULL, NULL, MAXBSIZE, MPT_SGL_MAX, BUS_SPACE_MAXSIZE_32BIT, 0,
  545             &mpt->buffer_dmat) != 0) {
  546                 device_printf(dev,
  547                     "cannot create a dma tag for data buffers\n");
  548                 return (1);
  549         }
  550 
  551         /* Create a child tag for request buffers */
  552         if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE,
  553             0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
  554             NULL, NULL, MPT_REQ_MEM_SIZE(mpt), 1, BUS_SPACE_MAXSIZE_32BIT, 0,
  555             &mpt->request_dmat) != 0) {
  556                 device_printf(dev, "cannot create a dma tag for requests\n");
  557                 return (1);
  558         }
  559 
  560         /* Allocate some DMA accessable memory for requests */
  561         if (bus_dmamem_alloc(mpt->request_dmat, (void **)&mpt->request,
  562             BUS_DMA_NOWAIT, &mpt->request_dmap) != 0) {
  563                 device_printf(dev,
  564                     "cannot allocate %d bytes of request memory\n",
  565                     MPT_REQ_MEM_SIZE(mpt));
  566                 return (1);
  567         }
  568 
  569         im.mpt = mpt;
  570         im.error = 0;
  571 
  572         /* Load and lock it into "bus space" */
  573         bus_dmamap_load(mpt->request_dmat, mpt->request_dmap, mpt->request,
  574             MPT_REQ_MEM_SIZE(mpt), mpt_map_rquest, &im, 0);
  575 
  576         if (im.error) {
  577                 device_printf(dev,
  578                     "error %d loading dma map for DMA request queue\n",
  579                     im.error);
  580                 return (1);
  581         }
  582         mpt->request_phys = im.phys;
  583 
  584         i = 0;
  585         pptr =  mpt->request_phys;
  586         vptr =  mpt->request;
  587         end = pptr + MPT_REQ_MEM_SIZE(mpt);
  588         while(pptr < end) {
  589                 request_t *req = &mpt->request_pool[i];
  590                 req->index = i++;
  591 
  592                 /* Store location of Request Data */
  593                 req->req_pbuf = pptr;
  594                 req->req_vbuf = vptr;
  595 
  596                 pptr += MPT_REQUEST_AREA;
  597                 vptr += MPT_REQUEST_AREA;
  598 
  599                 req->sense_pbuf = (pptr - MPT_SENSE_SIZE);
  600                 req->sense_vbuf = (vptr - MPT_SENSE_SIZE);
  601 
  602                 error = bus_dmamap_create(mpt->buffer_dmat, 0, &req->dmap);
  603                 if (error) {
  604                         device_printf(dev,
  605                              "error %d creating per-cmd DMA maps\n", error);
  606                         return (1);
  607                 }
  608         }
  609         return (0);
  610 }
  611 
  612 
  613 
  614 /* Deallocate memory that was allocated by mpt_dma_mem_alloc 
  615  */
  616 static void
  617 mpt_dma_mem_free(mpt_softc_t *mpt)
  618 {
  619         int i;
  620 
  621         /* Make sure we aren't double destroying */
  622         if (mpt->reply_dmat == 0) {
  623                 if (mpt->verbose)
  624                         device_printf(mpt->dev,"Already released dma memory\n");
  625                 return;
  626         }
  627                 
  628         for (i = 0; i < MPT_MAX_REQUESTS(mpt); i++) {
  629                 bus_dmamap_destroy(mpt->buffer_dmat, mpt->request_pool[i].dmap);
  630         }
  631         bus_dmamap_unload(mpt->request_dmat, mpt->request_dmap);
  632         bus_dmamem_free(mpt->request_dmat, mpt->request, mpt->request_dmap);
  633         bus_dma_tag_destroy(mpt->request_dmat);
  634         bus_dma_tag_destroy(mpt->buffer_dmat);
  635         bus_dmamap_unload(mpt->reply_dmat, mpt->reply_dmap);
  636         bus_dmamem_free(mpt->reply_dmat, mpt->reply, mpt->reply_dmap);
  637         bus_dma_tag_destroy(mpt->reply_dmat);
  638         bus_dma_tag_destroy(mpt->parent_dmat);
  639         mpt->reply_dmat = 0;
  640         free(mpt->request_pool, M_DEVBUF);
  641         mpt->request_pool = 0;
  642 
  643 }
  644 
  645 
  646 
  647 /* Reads modifiable (via PCI transactions) config registers */
  648 static void
  649 mpt_read_config_regs(mpt_softc_t *mpt)
  650 {
  651         mpt->pci_cfg.Command = pci_read_config(mpt->dev, PCIR_COMMAND, 2);
  652         mpt->pci_cfg.LatencyTimer_LineSize =
  653             pci_read_config(mpt->dev, PCIR_CACHELNSZ, 2);
  654         mpt->pci_cfg.IO_BAR = pci_read_config(mpt->dev, PCIR_MAPS, 4);
  655         mpt->pci_cfg.Mem0_BAR[0] = pci_read_config(mpt->dev, PCIR_MAPS+0x4, 4);
  656         mpt->pci_cfg.Mem0_BAR[1] = pci_read_config(mpt->dev, PCIR_MAPS+0x8, 4);
  657         mpt->pci_cfg.Mem1_BAR[0] = pci_read_config(mpt->dev, PCIR_MAPS+0xC, 4);
  658         mpt->pci_cfg.Mem1_BAR[1] = pci_read_config(mpt->dev, PCIR_MAPS+0x10, 4);
  659         mpt->pci_cfg.ROM_BAR = pci_read_config(mpt->dev, PCIR_BIOS, 4);
  660         mpt->pci_cfg.IntLine = pci_read_config(mpt->dev, PCIR_INTLINE, 1);
  661         mpt->pci_cfg.PMCSR = pci_read_config(mpt->dev, 0x44, 4);
  662 }
  663 
  664 /* Sets modifiable config registers */
  665 void
  666 mpt_set_config_regs(mpt_softc_t *mpt)
  667 {
  668         u_int32_t val;
  669 
  670 #define MPT_CHECK(reg, offset, size)                                    \
  671         val = pci_read_config(mpt->dev, offset, size);                  \
  672         if (mpt->pci_cfg.reg != val) {                                  \
  673                 mpt_prt(mpt,                                            \
  674                     "Restoring " #reg " to 0x%X from 0x%X\n",           \
  675                     mpt->pci_cfg.reg, val);                             \
  676         }
  677 
  678         if (mpt->verbose) {
  679                 MPT_CHECK(Command, PCIR_COMMAND, 2);
  680                 MPT_CHECK(LatencyTimer_LineSize, PCIR_CACHELNSZ, 2);
  681                 MPT_CHECK(IO_BAR, PCIR_MAPS, 4);
  682                 MPT_CHECK(Mem0_BAR[0], PCIR_MAPS+0x4, 4);
  683                 MPT_CHECK(Mem0_BAR[1], PCIR_MAPS+0x8, 4);
  684                 MPT_CHECK(Mem1_BAR[0], PCIR_MAPS+0xC, 4);
  685                 MPT_CHECK(Mem1_BAR[1], PCIR_MAPS+0x10, 4);
  686                 MPT_CHECK(ROM_BAR, PCIR_BIOS, 4);
  687                 MPT_CHECK(IntLine, PCIR_INTLINE, 1);
  688                 MPT_CHECK(PMCSR, 0x44, 4);
  689         }
  690 #undef MPT_CHECK
  691 
  692         pci_write_config(mpt->dev, PCIR_COMMAND, mpt->pci_cfg.Command, 2);
  693         pci_write_config(mpt->dev, PCIR_CACHELNSZ,
  694             mpt->pci_cfg.LatencyTimer_LineSize, 2);
  695         pci_write_config(mpt->dev, PCIR_MAPS, mpt->pci_cfg.IO_BAR, 4);
  696         pci_write_config(mpt->dev, PCIR_MAPS+0x4, mpt->pci_cfg.Mem0_BAR[0], 4);
  697         pci_write_config(mpt->dev, PCIR_MAPS+0x8, mpt->pci_cfg.Mem0_BAR[1], 4);
  698         pci_write_config(mpt->dev, PCIR_MAPS+0xC, mpt->pci_cfg.Mem1_BAR[0], 4);
  699         pci_write_config(mpt->dev, PCIR_MAPS+0x10, mpt->pci_cfg.Mem1_BAR[1], 4);
  700         pci_write_config(mpt->dev, PCIR_BIOS, mpt->pci_cfg.ROM_BAR, 4);
  701         pci_write_config(mpt->dev, PCIR_INTLINE, mpt->pci_cfg.IntLine, 1);
  702         pci_write_config(mpt->dev, 0x44, mpt->pci_cfg.PMCSR, 4);
  703 }
  704 
  705 static void
  706 mpt_pci_intr(void *arg)
  707 {
  708         mpt_softc_t *mpt = arg;
  709         MPT_LOCK(mpt);
  710         (void) mpt_intr(mpt);
  711         MPT_UNLOCK(mpt);
  712 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/mpt/mpt_pci.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/mpt/mpt_pci.c
