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("$FreeBSD$");
   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 static struct bman_softc *bman_sc;
   47 
   48 extern t_Handle bman_portal_setup(struct bman_softc *bsc);
   49 
   50 static void
   51 bman_exception(t_Handle h_App, e_BmExceptions exception)
   52 {
   53         struct bman_softc *sc;
   54         const char *message;
   55 
   56         sc = h_App;
   57 
   58         switch (exception) {
   59         case e_BM_EX_INVALID_COMMAND:
   60                 message = "Invalid Command Verb";
   61                 break;
   62         case e_BM_EX_FBPR_THRESHOLD:
   63                 message = "FBPR pool exhaused. Consider increasing "
   64                     "BMAN_MAX_BUFFERS";
   65                 break;
   66         case e_BM_EX_SINGLE_ECC:
   67                 message = "Single bit ECC error";
   68                 break;
   69         case e_BM_EX_MULTI_ECC:
   70                 message = "Multi bit ECC error";
   71                 break;
   72         default:
   73                 message = "Unknown error";
   74         }
   75 
   76         device_printf(sc->sc_dev, "BMAN Exception: %s.\n", message);
   77 }
   78 
   79 int
   80 bman_attach(device_t dev)
   81 {
   82         struct bman_softc *sc;
   83         t_BmRevisionInfo rev;
   84         t_Error error;
   85         t_BmParam bp;
   86 
   87         sc = device_get_softc(dev);
   88         sc->sc_dev = dev;
   89         bman_sc = sc;
   90 
   91         /* Check if MallocSmart allocator is ready */
   92         if (XX_MallocSmartInit() != E_OK)
   93                 return (ENXIO);
   94 
   95         /* Allocate resources */
   96         sc->sc_rrid = 0;
   97         sc->sc_rres = bus_alloc_resource_anywhere(dev, SYS_RES_MEMORY,
   98             &sc->sc_rrid, BMAN_CCSR_SIZE, RF_ACTIVE);
   99         if (sc->sc_rres == NULL)
  100                 return (ENXIO);
  101 
  102         sc->sc_irid = 0;
  103         sc->sc_ires = bus_alloc_resource_any(sc->sc_dev, SYS_RES_IRQ,
  104             &sc->sc_irid, RF_ACTIVE | RF_SHAREABLE);
  105         if (sc->sc_ires == NULL)
  106                 goto err;
  107 
  108         /* Initialize BMAN */
  109         memset(&bp, 0, sizeof(bp));
  110         bp.guestId = NCSW_MASTER_ID;
  111         bp.baseAddress = rman_get_bushandle(sc->sc_rres);
  112         bp.totalNumOfBuffers = BMAN_MAX_BUFFERS;
  113         bp.f_Exception = bman_exception;
  114         bp.h_App = sc;
  115         bp.errIrq = (uintptr_t)sc->sc_ires;
  116         bp.partBpidBase = 0;
  117         bp.partNumOfPools = BM_MAX_NUM_OF_POOLS;
  118 
  119         sc->sc_bh = BM_Config(&bp);
  120         if (sc->sc_bh == NULL)
  121                 goto err;
  122 
  123         /* Warn if there is less than 5% free FPBR's in pool */
  124         error = BM_ConfigFbprThreshold(sc->sc_bh, (BMAN_MAX_BUFFERS / 8) / 20);
  125         if (error != E_OK)
  126                 goto err;
  127 
  128         error = BM_Init(sc->sc_bh);
  129         if (error != E_OK)
  130                 goto err;
  131 
  132         error = BM_GetRevision(sc->sc_bh, &rev);
  133         if (error != E_OK)
  134                 goto err;
  135 
  136         device_printf(dev, "Hardware version: %d.%d.\n",
  137             rev.majorRev, rev.minorRev);
  138 
  139         return (0);
  140 
  141 err:
  142         bman_detach(dev);
  143         return (ENXIO);
  144 }
  145 
  146 int
  147 bman_detach(device_t dev)
  148 {
  149         struct bman_softc *sc;
  150 
  151         sc = device_get_softc(dev);
  152 
  153         if (sc->sc_bh != NULL)
  154                 BM_Free(sc->sc_bh);
  155 
  156         if (sc->sc_ires != NULL)
  157                 bus_release_resource(dev, SYS_RES_IRQ,
  158                     sc->sc_irid, sc->sc_ires);
  159 
  160         if (sc->sc_rres != NULL)
  161                 bus_release_resource(dev, SYS_RES_MEMORY,
  162                     sc->sc_rrid, sc->sc_rres);
  163 
  164         return (0);
  165 }
  166 
  167 int
  168 bman_suspend(device_t dev)
  169 {
  170 
  171         return (0);
  172 }
  173 
  174 int
  175 bman_resume(device_t dev)
  176 {
  177 
  178         return (0);
  179 }
  180 
  181 int
  182 bman_shutdown(device_t dev)
  183 {
  184 
  185         return (0);
  186 }
  187 
  188 /*
  189  * BMAN API
  190  */
  191 
  192 t_Handle
  193 bman_pool_create(uint8_t *bpid, uint16_t bufferSize, uint16_t maxBuffers,
  194     uint16_t minBuffers, uint16_t allocBuffers, t_GetBufFunction *f_GetBuf,
  195     t_PutBufFunction *f_PutBuf, uint32_t dep_sw_entry, uint32_t dep_sw_exit,
  196     uint32_t dep_hw_entry, uint32_t dep_hw_exit,
  197     t_BmDepletionCallback *f_Depletion, t_Handle h_BufferPool,
  198     t_PhysToVirt *f_PhysToVirt, t_VirtToPhys *f_VirtToPhys)
  199 {
  200         uint32_t thresholds[MAX_DEPLETION_THRESHOLDS];
  201         struct bman_softc *sc;
  202         t_Handle pool, portal;
  203         t_BmPoolParam bpp;
  204         int error;
  205 
  206         sc = bman_sc;
  207         pool = NULL;
  208 
  209         sched_pin();
  210 
  211         portal = bman_portal_setup(sc);
  212         if (portal == NULL)
  213                 goto err;
  214 
  215         memset(&bpp, 0, sizeof(bpp));
  216         bpp.h_Bm = sc->sc_bh;
  217         bpp.h_BmPortal = portal;
  218         bpp.h_App = h_BufferPool;
  219         bpp.numOfBuffers = allocBuffers;
  220 
  221         bpp.bufferPoolInfo.h_BufferPool = h_BufferPool;
  222         bpp.bufferPoolInfo.f_GetBuf = f_GetBuf;
  223         bpp.bufferPoolInfo.f_PutBuf = f_PutBuf;
  224         bpp.bufferPoolInfo.f_PhysToVirt = f_PhysToVirt;
  225         bpp.bufferPoolInfo.f_VirtToPhys = f_VirtToPhys;
  226         bpp.bufferPoolInfo.bufferSize = bufferSize;
  227 
  228         pool = BM_POOL_Config(&bpp);
  229         if (pool == NULL)
  230                 goto err;
  231 
  232         /*
  233          * Buffer context must be disabled on FreeBSD
  234          * as it could cause memory corruption.
  235          */
  236         BM_POOL_ConfigBuffContextMode(pool, 0);
  237 
  238         if (minBuffers != 0 || maxBuffers != 0) {
  239                 error = BM_POOL_ConfigStockpile(pool, maxBuffers, minBuffers);
  240                 if (error != E_OK)
  241                         goto err;
  242         }
  243 
  244         if (f_Depletion != NULL) {
  245                 thresholds[BM_POOL_DEP_THRESH_SW_ENTRY] = dep_sw_entry;
  246                 thresholds[BM_POOL_DEP_THRESH_SW_EXIT] = dep_sw_exit;
  247                 thresholds[BM_POOL_DEP_THRESH_HW_ENTRY] = dep_hw_entry;
  248                 thresholds[BM_POOL_DEP_THRESH_HW_EXIT] = dep_hw_exit;
  249                 error = BM_POOL_ConfigDepletion(pool, f_Depletion, thresholds);
  250                 if (error != E_OK)
  251                         goto err;
  252         }
  253 
  254         error = BM_POOL_Init(pool);
  255         if (error != E_OK)
  256                 goto err;
  257 
  258         *bpid = BM_POOL_GetId(pool);
  259         sc->sc_bpool_cpu[*bpid] = PCPU_GET(cpuid);
  260 
  261         sched_unpin();
  262 
  263         return (pool);
  264 
  265 err:
  266         if (pool != NULL)
  267                 BM_POOL_Free(pool);
  268 
  269         sched_unpin();
  270 
  271         return (NULL);
  272 }
  273 
  274 int
  275 bman_pool_destroy(t_Handle pool)
  276 {
  277         struct bman_softc *sc;
  278 
  279         sc = bman_sc;
  280         thread_lock(curthread);
  281         sched_bind(curthread, sc->sc_bpool_cpu[BM_POOL_GetId(pool)]);
  282         thread_unlock(curthread);
  283 
  284         BM_POOL_Free(pool);
  285 
  286         thread_lock(curthread);
  287         sched_unbind(curthread);
  288         thread_unlock(curthread);
  289 
  290         return (0);
  291 }
  292 
  293 int
  294 bman_pool_fill(t_Handle pool, uint16_t nbufs)
  295 {
  296         struct bman_softc *sc;
  297         t_Handle portal;
  298         int error;
  299 
  300         sc = bman_sc;
  301         sched_pin();
  302 
  303         portal = bman_portal_setup(sc);
  304         if (portal == NULL) {
  305                 sched_unpin();
  306                 return (EIO);
  307         }
  308 
  309         error = BM_POOL_FillBufs(pool, portal, nbufs);
  310 
  311         sched_unpin();
  312 
  313         return ((error == E_OK) ? 0 : EIO);
  314 }
  315 
  316 void *
  317 bman_get_buffer(t_Handle pool)
  318 {
  319         struct bman_softc *sc;
  320         t_Handle portal;
  321         void *buffer;
  322 
  323         sc = bman_sc;
  324         sched_pin();
  325 
  326         portal = bman_portal_setup(sc);
  327         if (portal == NULL) {
  328                 sched_unpin();
  329                 return (NULL);
  330         }
  331 
  332         buffer = BM_POOL_GetBuf(pool, portal);
  333 
  334         sched_unpin();
  335 
  336         return (buffer);
  337 }
  338 
  339 int
  340 bman_put_buffer(t_Handle pool, void *buffer)
  341 {
  342         struct bman_softc *sc;
  343         t_Handle portal;
  344         int error;
  345 
  346         sc = bman_sc;
  347         sched_pin();
  348 
  349         portal = bman_portal_setup(sc);
  350         if (portal == NULL) {
  351                 sched_unpin();
  352                 return (EIO);
  353         }
  354 
  355         error = BM_POOL_PutBuf(pool, portal, buffer);
  356 
  357         sched_unpin();
  358 
  359         return ((error == E_OK) ? 0 : EIO);
  360 }
  361 
  362 uint32_t
  363 bman_count(t_Handle pool)
  364 {
  365 
  366         return (BM_POOL_GetCounter(pool, e_BM_POOL_COUNTERS_CONTENT));
  367 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/dpaa/bman.c

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