bman.c

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    1 /*-
    2  * Copyright (c) 2011-2012 Semihalf.
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  */
   26 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/12.0/sys/dev/dpaa/bman.c 325118 2017-10-30 03:41:04Z jhibbits $");
   29 
   30 #include <sys/param.h>
   31 #include <sys/systm.h>
   32 #include <sys/kernel.h>
   33 #include <sys/bus.h>
   34 #include <sys/lock.h>
   35 #include <sys/module.h>
   36 #include <sys/mutex.h>
   37 #include <sys/proc.h>
   38 #include <sys/pcpu.h>
   39 #include <sys/rman.h>
   40 #include <sys/sched.h>
   41 
   42 #include <machine/tlb.h>
   43 
   44 #include "bman.h"
   45 
   46 devclass_t bman_devclass;
   47 
   48 static struct bman_softc *bman_sc;
   49 
   50 extern t_Handle bman_portal_setup(struct bman_softc *bsc);
   51 
   52 static void
   53 bman_exception(t_Handle h_App, e_BmExceptions exception)
   54 {
   55         struct bman_softc *sc;
   56         const char *message;
   57 
   58         sc = h_App;
   59 
   60         switch (exception) {
   61         case e_BM_EX_INVALID_COMMAND:
   62                 message = "Invalid Command Verb";
   63                 break;
   64         case e_BM_EX_FBPR_THRESHOLD:
   65                 message = "FBPR pool exhaused. Consider increasing "
   66                     "BMAN_MAX_BUFFERS";
   67                 break;
   68         case e_BM_EX_SINGLE_ECC:
   69                 message = "Single bit ECC error";
   70                 break;
   71         case e_BM_EX_MULTI_ECC:
   72                 message = "Multi bit ECC error";
   73                 break;
   74         default:
   75                 message = "Unknown error";
   76         }
   77 
   78         device_printf(sc->sc_dev, "BMAN Exception: %s.\n", message);
   79 }
   80 
   81 int
   82 bman_attach(device_t dev)
   83 {
   84         struct bman_softc *sc;
   85         t_BmRevisionInfo rev;
   86         t_Error error;
   87         t_BmParam bp;
   88 
   89         sc = device_get_softc(dev);
   90         sc->sc_dev = dev;
   91         bman_sc = sc;
   92 
   93         /* Check if MallocSmart allocator is ready */
   94         if (XX_MallocSmartInit() != E_OK)
   95                 return (ENXIO);
   96 
   97         /* Allocate resources */
   98         sc->sc_rrid = 0;
   99         sc->sc_rres = bus_alloc_resource_anywhere(dev, SYS_RES_MEMORY,
  100             &sc->sc_rrid, BMAN_CCSR_SIZE, RF_ACTIVE);
  101         if (sc->sc_rres == NULL)
  102                 return (ENXIO);
  103 
  104         sc->sc_irid = 0;
  105         sc->sc_ires = bus_alloc_resource_any(sc->sc_dev, SYS_RES_IRQ,
  106             &sc->sc_irid, RF_ACTIVE | RF_SHAREABLE);
  107         if (sc->sc_ires == NULL)
  108                 goto err;
  109 
  110         /* Initialize BMAN */
  111         memset(&bp, 0, sizeof(bp));
  112         bp.guestId = NCSW_MASTER_ID;
  113         bp.baseAddress = rman_get_bushandle(sc->sc_rres);
  114         bp.totalNumOfBuffers = BMAN_MAX_BUFFERS;
  115         bp.f_Exception = bman_exception;
  116         bp.h_App = sc;
  117         bp.errIrq = (uintptr_t)sc->sc_ires;
  118         bp.partBpidBase = 0;
  119         bp.partNumOfPools = BM_MAX_NUM_OF_POOLS;
  120 
  121         sc->sc_bh = BM_Config(&bp);
  122         if (sc->sc_bh == NULL)
  123                 goto err;
  124 
  125         /* Warn if there is less than 5% free FPBR's in pool */
  126         error = BM_ConfigFbprThreshold(sc->sc_bh, (BMAN_MAX_BUFFERS / 8) / 20);
  127         if (error != E_OK)
  128                 goto err;
  129 
  130         error = BM_Init(sc->sc_bh);
  131         if (error != E_OK)
  132                 goto err;
  133 
  134         error = BM_GetRevision(sc->sc_bh, &rev);
  135         if (error != E_OK)
  136                 goto err;
  137 
  138         device_printf(dev, "Hardware version: %d.%d.\n",
  139             rev.majorRev, rev.minorRev);
  140 
  141         return (0);
  142 
  143 err:
  144         bman_detach(dev);
  145         return (ENXIO);
  146 }
  147 
  148 int
  149 bman_detach(device_t dev)
  150 {
  151         struct bman_softc *sc;
  152 
  153         sc = device_get_softc(dev);
  154 
  155         if (sc->sc_bh != NULL)
  156                 BM_Free(sc->sc_bh);
  157 
  158         if (sc->sc_ires != NULL)
  159                 bus_release_resource(dev, SYS_RES_IRQ,
  160                     sc->sc_irid, sc->sc_ires);
  161 
  162         if (sc->sc_rres != NULL)
  163                 bus_release_resource(dev, SYS_RES_MEMORY,
  164                     sc->sc_rrid, sc->sc_rres);
  165 
  166         return (0);
  167 }
  168 
  169 int
  170 bman_suspend(device_t dev)
  171 {
  172 
  173         return (0);
  174 }
  175 
  176 int
  177 bman_resume(device_t dev)
  178 {
  179 
  180         return (0);
  181 }
  182 
  183 int
  184 bman_shutdown(device_t dev)
  185 {
  186 
  187         return (0);
  188 }
  189 
  190 /*
  191  * BMAN API
  192  */
  193 
  194 t_Handle
  195 bman_pool_create(uint8_t *bpid, uint16_t bufferSize, uint16_t maxBuffers,
  196     uint16_t minBuffers, uint16_t allocBuffers, t_GetBufFunction *f_GetBuf,
  197     t_PutBufFunction *f_PutBuf, uint32_t dep_sw_entry, uint32_t dep_sw_exit,
  198     uint32_t dep_hw_entry, uint32_t dep_hw_exit,
  199     t_BmDepletionCallback *f_Depletion, t_Handle h_BufferPool,
  200     t_PhysToVirt *f_PhysToVirt, t_VirtToPhys *f_VirtToPhys)
  201 {
  202         uint32_t thresholds[MAX_DEPLETION_THRESHOLDS];
  203         struct bman_softc *sc;
  204         t_Handle pool, portal;
  205         t_BmPoolParam bpp;
  206         int error;
  207 
  208         sc = bman_sc;
  209         pool = NULL;
  210 
  211         sched_pin();
  212 
  213         portal = bman_portal_setup(sc);
  214         if (portal == NULL)
  215                 goto err;
  216 
  217         memset(&bpp, 0, sizeof(bpp));
  218         bpp.h_Bm = sc->sc_bh;
  219         bpp.h_BmPortal = portal;
  220         bpp.h_App = h_BufferPool;
  221         bpp.numOfBuffers = allocBuffers;
  222 
  223         bpp.bufferPoolInfo.h_BufferPool = h_BufferPool;
  224         bpp.bufferPoolInfo.f_GetBuf = f_GetBuf;
  225         bpp.bufferPoolInfo.f_PutBuf = f_PutBuf;
  226         bpp.bufferPoolInfo.f_PhysToVirt = f_PhysToVirt;
  227         bpp.bufferPoolInfo.f_VirtToPhys = f_VirtToPhys;
  228         bpp.bufferPoolInfo.bufferSize = bufferSize;
  229 
  230         pool = BM_POOL_Config(&bpp);
  231         if (pool == NULL)
  232                 goto err;
  233 
  234         /*
  235          * Buffer context must be disabled on FreeBSD
  236          * as it could cause memory corruption.
  237          */
  238         BM_POOL_ConfigBuffContextMode(pool, 0);
  239 
  240         if (minBuffers != 0 || maxBuffers != 0) {
  241                 error = BM_POOL_ConfigStockpile(pool, maxBuffers, minBuffers);
  242                 if (error != E_OK)
  243                         goto err;
  244         }
  245 
  246         if (f_Depletion != NULL) {
  247                 thresholds[BM_POOL_DEP_THRESH_SW_ENTRY] = dep_sw_entry;
  248                 thresholds[BM_POOL_DEP_THRESH_SW_EXIT] = dep_sw_exit;
  249                 thresholds[BM_POOL_DEP_THRESH_HW_ENTRY] = dep_hw_entry;
  250                 thresholds[BM_POOL_DEP_THRESH_HW_EXIT] = dep_hw_exit;
  251                 error = BM_POOL_ConfigDepletion(pool, f_Depletion, thresholds);
  252                 if (error != E_OK)
  253                         goto err;
  254         }
  255 
  256         error = BM_POOL_Init(pool);
  257         if (error != E_OK)
  258                 goto err;
  259 
  260         *bpid = BM_POOL_GetId(pool);
  261         sc->sc_bpool_cpu[*bpid] = PCPU_GET(cpuid);
  262 
  263         sched_unpin();
  264 
  265         return (pool);
  266 
  267 err:
  268         if (pool != NULL)
  269                 BM_POOL_Free(pool);
  270 
  271         sched_unpin();
  272 
  273         return (NULL);
  274 }
  275 
  276 int
  277 bman_pool_destroy(t_Handle pool)
  278 {
  279         struct bman_softc *sc;
  280 
  281         sc = bman_sc;
  282         thread_lock(curthread);
  283         sched_bind(curthread, sc->sc_bpool_cpu[BM_POOL_GetId(pool)]);
  284         thread_unlock(curthread);
  285 
  286         BM_POOL_Free(pool);
  287 
  288         thread_lock(curthread);
  289         sched_unbind(curthread);
  290         thread_unlock(curthread);
  291 
  292         return (0);
  293 }
  294 
  295 int
  296 bman_pool_fill(t_Handle pool, uint16_t nbufs)
  297 {
  298         struct bman_softc *sc;
  299         t_Handle portal;
  300         int error;
  301 
  302         sc = bman_sc;
  303         sched_pin();
  304 
  305         portal = bman_portal_setup(sc);
  306         if (portal == NULL) {
  307                 sched_unpin();
  308                 return (EIO);
  309         }
  310 
  311         error = BM_POOL_FillBufs(pool, portal, nbufs);
  312 
  313         sched_unpin();
  314 
  315         return ((error == E_OK) ? 0 : EIO);
  316 }
  317 
  318 void *
  319 bman_get_buffer(t_Handle pool)
  320 {
  321         struct bman_softc *sc;
  322         t_Handle portal;
  323         void *buffer;
  324 
  325         sc = bman_sc;
  326         sched_pin();
  327 
  328         portal = bman_portal_setup(sc);
  329         if (portal == NULL) {
  330                 sched_unpin();
  331                 return (NULL);
  332         }
  333 
  334         buffer = BM_POOL_GetBuf(pool, portal);
  335 
  336         sched_unpin();
  337 
  338         return (buffer);
  339 }
  340 
  341 int
  342 bman_put_buffer(t_Handle pool, void *buffer)
  343 {
  344         struct bman_softc *sc;
  345         t_Handle portal;
  346         int error;
  347 
  348         sc = bman_sc;
  349         sched_pin();
  350 
  351         portal = bman_portal_setup(sc);
  352         if (portal == NULL) {
  353                 sched_unpin();
  354                 return (EIO);
  355         }
  356 
  357         error = BM_POOL_PutBuf(pool, portal, buffer);
  358 
  359         sched_unpin();
  360 
  361         return ((error == E_OK) ? 0 : EIO);
  362 }
  363 
  364 uint32_t
  365 bman_count(t_Handle pool)
  366 {
  367 
  368         return (BM_POOL_GetCounter(pool, e_BM_POOL_COUNTERS_CONTENT));
  369 }
Cache object: e9286941ff17536c3735d0ac9926765e
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FreeBSD/Linux Kernel Cross Reference sys/dev/dpaa/bman.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/dpaa/bman.c
