The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/malo/if_malohal.c

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    1 /*-
    2  * Copyright (c) 2007 Marvell Semiconductor, Inc.
    3  * Copyright (c) 2007 Sam Leffler, Errno Consulting
    4  * Copyright (c) 2008 Weongyo Jeong <weongyo@freebsd.org>
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer,
   12  *    without modification.
   13  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
   14  *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
   15  *    redistribution must be conditioned upon including a substantially
   16  *    similar Disclaimer requirement for further binary redistribution.
   17  *
   18  * NO WARRANTY
   19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   21  * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
   22  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
   23  * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
   24  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
   27  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   29  * THE POSSIBILITY OF SUCH DAMAGES.
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 #ifdef __FreeBSD__
   34 __FBSDID("$FreeBSD: releng/9.2/sys/dev/malo/if_malohal.c 190550 2009-03-30 11:23:14Z weongyo $");
   35 #endif
   36 
   37 #include <sys/param.h>
   38 #include <sys/systm.h>
   39 #include <sys/endian.h>
   40 #include <sys/kernel.h>
   41 #include <sys/firmware.h>
   42 #include <sys/socket.h>
   43 
   44 #include <machine/bus.h>
   45 #include <sys/bus.h>
   46 
   47 #include <net/if.h>
   48 #include <net/if_dl.h>
   49 #include <net/if_media.h>
   50 
   51 #include <net80211/ieee80211_var.h>
   52 
   53 #include <dev/malo/if_malo.h>
   54 
   55 #define MALO_WAITOK                             1
   56 #define MALO_NOWAIT                             0
   57 
   58 #define _CMD_SETUP(pCmd, _type, _cmd) do {                              \
   59         pCmd = (_type *)&mh->mh_cmdbuf[0];                              \
   60         memset(pCmd, 0, sizeof(_type));                                 \
   61         pCmd->cmdhdr.cmd = htole16(_cmd);                               \
   62         pCmd->cmdhdr.length = htole16(sizeof(_type));                   \
   63 } while (0)
   64 
   65 static __inline uint32_t
   66 malo_hal_read4(struct malo_hal *mh, bus_size_t off)
   67 {
   68         return bus_space_read_4(mh->mh_iot, mh->mh_ioh, off);
   69 }
   70 
   71 static __inline void
   72 malo_hal_write4(struct malo_hal *mh, bus_size_t off, uint32_t val)
   73 {
   74         bus_space_write_4(mh->mh_iot, mh->mh_ioh, off, val);
   75 }
   76 
   77 static void
   78 malo_hal_load_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
   79 {
   80         bus_addr_t *paddr = (bus_addr_t*) arg;
   81 
   82         KASSERT(error == 0, ("error %u on bus_dma callback", error));
   83         *paddr = segs->ds_addr;
   84 }
   85 
   86 /*
   87  * Setup for communication with the device.  We allocate
   88  * a command buffer and map it for bus dma use.  The pci
   89  * device id is used to identify whether the device has
   90  * SRAM on it (in which case f/w download must include a
   91  * memory controller reset).  All bus i/o operations happen
   92  * in BAR 1; the driver passes in the tag and handle we need.
   93  */
   94 struct malo_hal *
   95 malo_hal_attach(device_t dev, uint16_t devid,
   96     bus_space_handle_t ioh, bus_space_tag_t iot, bus_dma_tag_t tag)
   97 {
   98         int error;
   99         struct malo_hal *mh;
  100 
  101         mh = malloc(sizeof(struct malo_hal), M_DEVBUF, M_NOWAIT | M_ZERO);
  102         if (mh == NULL)
  103                 return NULL;
  104 
  105         mh->mh_dev = dev;
  106         mh->mh_ioh = ioh;
  107         mh->mh_iot = iot;
  108 
  109         snprintf(mh->mh_mtxname, sizeof(mh->mh_mtxname),
  110             "%s_hal", device_get_nameunit(dev));
  111         mtx_init(&mh->mh_mtx, mh->mh_mtxname, NULL, MTX_DEF);
  112 
  113         /*
  114          * Allocate the command buffer and map into the address
  115          * space of the h/w.  We request "coherent" memory which
  116          * will be uncached on some architectures.
  117          */
  118         error = bus_dma_tag_create(tag,         /* parent */
  119                        PAGE_SIZE, 0,            /* alignment, bounds */
  120                        BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
  121                        BUS_SPACE_MAXADDR,       /* highaddr */
  122                        NULL, NULL,              /* filter, filterarg */
  123                        MALO_CMDBUF_SIZE,        /* maxsize */
  124                        1,                       /* nsegments */
  125                        MALO_CMDBUF_SIZE,        /* maxsegsize */
  126                        BUS_DMA_ALLOCNOW,        /* flags */
  127                        NULL,                    /* lockfunc */
  128                        NULL,                    /* lockarg */
  129                        &mh->mh_dmat);
  130         if (error != 0) {
  131                 device_printf(dev, "unable to allocate memory for cmd tag, "
  132                         "error %u\n", error);
  133                 goto fail;
  134         }
  135 
  136         /* allocate descriptors */
  137         error = bus_dmamap_create(mh->mh_dmat, BUS_DMA_NOWAIT, &mh->mh_dmamap);
  138         if (error != 0) {
  139                 device_printf(dev, "unable to create dmamap for cmd buffers, "
  140                         "error %u\n", error);
  141                 goto fail;
  142         }
  143 
  144         error = bus_dmamem_alloc(mh->mh_dmat, (void**) &mh->mh_cmdbuf,
  145                                  BUS_DMA_NOWAIT | BUS_DMA_COHERENT, 
  146                                  &mh->mh_dmamap);
  147         if (error != 0) {
  148                 device_printf(dev, "unable to allocate memory for cmd buffer, "
  149                         "error %u\n", error);
  150                 goto fail;
  151         }
  152 
  153         error = bus_dmamap_load(mh->mh_dmat, mh->mh_dmamap,
  154                                 mh->mh_cmdbuf, MALO_CMDBUF_SIZE,
  155                                 malo_hal_load_cb, &mh->mh_cmdaddr,
  156                                 BUS_DMA_NOWAIT);
  157         if (error != 0) {
  158                 device_printf(dev, "unable to load cmd buffer, error %u\n",
  159                         error);
  160                 goto fail;
  161         }
  162 
  163         return (mh);
  164 
  165 fail:
  166         if (mh->mh_dmamap != NULL) {
  167                 bus_dmamap_unload(mh->mh_dmat, mh->mh_dmamap);
  168                 if (mh->mh_cmdbuf != NULL)
  169                         bus_dmamem_free(mh->mh_dmat, mh->mh_cmdbuf,
  170                             mh->mh_dmamap);
  171                 bus_dmamap_destroy(mh->mh_dmat, mh->mh_dmamap);
  172         }
  173         if (mh->mh_dmat)
  174                 bus_dma_tag_destroy(mh->mh_dmat);
  175         free(mh, M_DEVBUF);
  176 
  177         return (NULL);
  178 }
  179 
  180 /*
  181  * Low level firmware cmd block handshake support.
  182  */
  183 
  184 static void
  185 malo_hal_send_cmd(struct malo_hal *mh)
  186 {
  187         uint32_t dummy;
  188 
  189         bus_dmamap_sync(mh->mh_dmat, mh->mh_dmamap,
  190             BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
  191 
  192         malo_hal_write4(mh, MALO_REG_GEN_PTR, mh->mh_cmdaddr);
  193         dummy = malo_hal_read4(mh, MALO_REG_INT_CODE);
  194 
  195         malo_hal_write4(mh, MALO_REG_H2A_INTERRUPT_EVENTS,
  196             MALO_H2ARIC_BIT_DOOR_BELL);
  197 }
  198 
  199 static int
  200 malo_hal_waitforcmd(struct malo_hal *mh, uint16_t cmd)
  201 {
  202 #define MAX_WAIT_FW_COMPLETE_ITERATIONS 10000
  203         int i;
  204 
  205         for (i = 0; i < MAX_WAIT_FW_COMPLETE_ITERATIONS; i++) {
  206                 if (mh->mh_cmdbuf[0] == le16toh(cmd))
  207                         return 1;
  208 
  209                 DELAY(1 * 1000);
  210         }
  211 
  212         return 0;
  213 #undef MAX_WAIT_FW_COMPLETE_ITERATIONS
  214 }
  215 
  216 static int
  217 malo_hal_execute_cmd(struct malo_hal *mh, unsigned short cmd)
  218 {
  219         MALO_HAL_LOCK_ASSERT(mh);
  220 
  221         if ((mh->mh_flags & MHF_FWHANG) &&
  222             (mh->mh_debug & MALO_HAL_DEBUG_IGNHANG) == 0) {
  223                 device_printf(mh->mh_dev, "firmware hung, skipping cmd 0x%x\n",
  224                         cmd);
  225                 return ENXIO;
  226         }
  227 
  228         if (malo_hal_read4(mh, MALO_REG_INT_CODE) == 0xffffffff) {
  229                 device_printf(mh->mh_dev, "%s: device not present!\n",
  230                     __func__);
  231                 return EIO;
  232         }
  233 
  234         malo_hal_send_cmd(mh);
  235         if (!malo_hal_waitforcmd(mh, cmd | 0x8000)) {
  236                 device_printf(mh->mh_dev,
  237                     "timeout waiting for f/w cmd 0x%x\n", cmd);
  238                 mh->mh_flags |= MHF_FWHANG;
  239                 return ETIMEDOUT;
  240         }
  241 
  242         bus_dmamap_sync(mh->mh_dmat, mh->mh_dmamap,
  243             BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
  244 
  245         return 0;
  246 }
  247 
  248 static int
  249 malo_hal_get_cal_table(struct malo_hal *mh, uint8_t annex, uint8_t index)
  250 {
  251         struct malo_cmd_caltable *cmd;
  252         int ret;
  253 
  254         MALO_HAL_LOCK_ASSERT(mh);
  255 
  256         _CMD_SETUP(cmd, struct malo_cmd_caltable, MALO_HOSTCMD_GET_CALTABLE);
  257         cmd->annex = annex;
  258         cmd->index = index;
  259 
  260         ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_GET_CALTABLE);
  261         if (ret == 0 && cmd->caltbl[0] != annex && annex != 0 && annex != 255)
  262                 ret = EIO;
  263         return ret;
  264 }                                                         
  265 
  266 static int
  267 malo_hal_get_pwrcal_table(struct malo_hal *mh, struct malo_hal_caldata *cal)
  268 {
  269         const uint8_t *data;
  270         int len;
  271 
  272         MALO_HAL_LOCK(mh);
  273         /* NB: we hold the lock so it's ok to use cmdbuf */
  274         data = ((const struct malo_cmd_caltable *) mh->mh_cmdbuf)->caltbl;
  275         if (malo_hal_get_cal_table(mh, 33, 0) == 0) {
  276                 len = (data[2] | (data[3] << 8)) - 12;
  277                 /* XXX validate len */
  278                 memcpy(cal->pt_ratetable_20m, &data[12], len);  
  279         }
  280         mh->mh_flags |= MHF_CALDATA;
  281         MALO_HAL_UNLOCK(mh);
  282 
  283         return 0;
  284 }
  285 
  286 /*
  287  * Reset internal state after a firmware download.
  288  */
  289 static int
  290 malo_hal_resetstate(struct malo_hal *mh)
  291 {
  292         /*
  293          * Fetch cal data for later use.
  294          * XXX may want to fetch other stuff too.
  295          */
  296         if ((mh->mh_flags & MHF_CALDATA) == 0)
  297                 malo_hal_get_pwrcal_table(mh, &mh->mh_caldata);
  298         return 0;
  299 }
  300 
  301 static void
  302 malo_hal_fw_reset(struct malo_hal *mh)
  303 {
  304 
  305         if (malo_hal_read4(mh,  MALO_REG_INT_CODE) == 0xffffffff) {
  306                 device_printf(mh->mh_dev, "%s: device not present!\n",
  307                     __func__);
  308                 return;
  309         }
  310 
  311         malo_hal_write4(mh, MALO_REG_H2A_INTERRUPT_EVENTS, MALO_ISR_RESET);
  312         mh->mh_flags &= ~MHF_FWHANG;
  313 }
  314 
  315 static void
  316 malo_hal_trigger_pcicmd(struct malo_hal *mh)
  317 {
  318         uint32_t dummy;
  319 
  320         bus_dmamap_sync(mh->mh_dmat, mh->mh_dmamap, BUS_DMASYNC_PREWRITE);
  321 
  322         malo_hal_write4(mh, MALO_REG_GEN_PTR, mh->mh_cmdaddr);
  323         dummy = malo_hal_read4(mh, MALO_REG_INT_CODE);
  324 
  325         malo_hal_write4(mh, MALO_REG_INT_CODE, 0x00);
  326         dummy = malo_hal_read4(mh, MALO_REG_INT_CODE);
  327 
  328         malo_hal_write4(mh, MALO_REG_H2A_INTERRUPT_EVENTS,
  329             MALO_H2ARIC_BIT_DOOR_BELL);
  330         dummy = malo_hal_read4(mh, MALO_REG_INT_CODE);
  331 }
  332 
  333 static int
  334 malo_hal_waitfor(struct malo_hal *mh, uint32_t val)
  335 {
  336         int i;
  337 
  338         for (i = 0; i < MALO_FW_MAX_NUM_CHECKS; i++) {
  339                 DELAY(MALO_FW_CHECK_USECS);
  340                 if (malo_hal_read4(mh, MALO_REG_INT_CODE) == val)
  341                         return 0;
  342         }
  343 
  344         return -1;
  345 }
  346 
  347 /*
  348  * Firmware block xmit when talking to the boot-rom.
  349  */
  350 static int
  351 malo_hal_send_helper(struct malo_hal *mh, int bsize,
  352     const void *data, size_t dsize, int waitfor)
  353 {
  354         mh->mh_cmdbuf[0] = htole16(MALO_HOSTCMD_CODE_DNLD);
  355         mh->mh_cmdbuf[1] = htole16(bsize);
  356         memcpy(&mh->mh_cmdbuf[4], data , dsize);
  357 
  358         malo_hal_trigger_pcicmd(mh);
  359 
  360         if (waitfor == MALO_NOWAIT)
  361                 goto pass;
  362 
  363         /* XXX 2000 vs 200 */
  364         if (malo_hal_waitfor(mh, MALO_INT_CODE_CMD_FINISHED) != 0) {
  365                 device_printf(mh->mh_dev,
  366                     "%s: timeout waiting for CMD_FINISHED, INT_CODE 0x%x\n",
  367                     __func__, malo_hal_read4(mh, MALO_REG_INT_CODE));
  368                 
  369                 return ETIMEDOUT;
  370         }
  371 
  372 pass:
  373         malo_hal_write4(mh, MALO_REG_INT_CODE, 0);
  374 
  375         return (0);
  376 }
  377 
  378 static int
  379 malo_hal_fwload_helper(struct malo_hal *mh, char *helper)
  380 {
  381         const struct firmware *fw;
  382         int error;
  383 
  384         fw = firmware_get(helper);
  385         if (fw == NULL) {
  386                 device_printf(mh->mh_dev, "could not read microcode %s!\n",
  387                     helper);
  388                 return (EIO);
  389         }
  390 
  391         device_printf(mh->mh_dev, "load %s firmware image (%zu bytes)\n",
  392             helper, fw->datasize);
  393 
  394         error = malo_hal_send_helper(mh, fw->datasize, fw->data, fw->datasize,
  395                 MALO_WAITOK);
  396         if (error != 0)
  397                 goto fail;
  398 
  399         /* tell the card we're done and... */
  400         error = malo_hal_send_helper(mh, 0, NULL, 0, MALO_NOWAIT);
  401 
  402 fail:
  403         firmware_put(fw, FIRMWARE_UNLOAD);
  404 
  405         return (error);
  406 }
  407 
  408 /*
  409  * Firmware block xmit when talking to the 1st-stage loader.
  410  */
  411 static int
  412 malo_hal_send_main(struct malo_hal *mh, const void *data, size_t dsize,
  413     uint16_t seqnum, int waitfor)
  414 {
  415         mh->mh_cmdbuf[0] = htole16(MALO_HOSTCMD_CODE_DNLD);
  416         mh->mh_cmdbuf[1] = htole16(dsize);
  417         mh->mh_cmdbuf[2] = htole16(seqnum);
  418         mh->mh_cmdbuf[3] = 0;
  419         memcpy(&mh->mh_cmdbuf[4], data, dsize);
  420 
  421         malo_hal_trigger_pcicmd(mh);
  422 
  423         if (waitfor == MALO_NOWAIT)
  424                 goto pass;
  425 
  426         if (malo_hal_waitfor(mh, MALO_INT_CODE_CMD_FINISHED) != 0) {
  427                 device_printf(mh->mh_dev,
  428                     "%s: timeout waiting for CMD_FINISHED, INT_CODE 0x%x\n",
  429                     __func__, malo_hal_read4(mh, MALO_REG_INT_CODE));
  430 
  431                 return ETIMEDOUT;
  432         }
  433 
  434 pass:
  435         malo_hal_write4(mh, MALO_REG_INT_CODE, 0);
  436 
  437         return 0;
  438 }
  439 
  440 static int
  441 malo_hal_fwload_main(struct malo_hal *mh, char *firmware)
  442 {
  443         const struct firmware *fw;
  444         const uint8_t *fp;
  445         int error;
  446         size_t count;
  447         uint16_t seqnum;
  448         uint32_t blocksize;
  449 
  450         error = 0;
  451 
  452         fw = firmware_get(firmware);
  453         if (fw == NULL) {
  454                 device_printf(mh->mh_dev, "could not read firmware %s!\n",
  455                     firmware);
  456                 return (EIO);
  457         }
  458 
  459         device_printf(mh->mh_dev, "load %s firmware image (%zu bytes)\n",
  460             firmware, fw->datasize);
  461 
  462         seqnum = 1;
  463         for (count = 0; count < fw->datasize; count += blocksize) {
  464                 blocksize = MIN(256, fw->datasize - count);
  465                 fp = (const uint8_t *)fw->data + count;
  466 
  467                 error = malo_hal_send_main(mh, fp, blocksize, seqnum++,
  468                     MALO_NOWAIT);
  469                 if (error != 0)
  470                         goto fail;
  471                 DELAY(500);
  472         }
  473         
  474         /*
  475          * send a command with size 0 to tell that the firmware has been
  476          * uploaded
  477          */
  478         error = malo_hal_send_main(mh, NULL, 0, seqnum++, MALO_NOWAIT);
  479         DELAY(100);
  480 
  481 fail:
  482         firmware_put(fw, FIRMWARE_UNLOAD);
  483 
  484         return (error);
  485 }
  486 
  487 int
  488 malo_hal_fwload(struct malo_hal *mh, char *helper, char *firmware)
  489 {
  490         int error, i;
  491         uint32_t fwreadysig, opmode;
  492 
  493         /*
  494          * NB: now malo(4) supports only STA mode.  It will be better if it
  495          * supports AP mode.
  496          */
  497         fwreadysig = MALO_HOSTCMD_STA_FWRDY_SIGNATURE;
  498         opmode = MALO_HOSTCMD_STA_MODE;
  499 
  500         malo_hal_fw_reset(mh);
  501 
  502         malo_hal_write4(mh, MALO_REG_A2H_INTERRUPT_CLEAR_SEL,
  503             MALO_A2HRIC_BIT_MASK);
  504         malo_hal_write4(mh, MALO_REG_A2H_INTERRUPT_CAUSE, 0x00);
  505         malo_hal_write4(mh, MALO_REG_A2H_INTERRUPT_MASK, 0x00);
  506         malo_hal_write4(mh, MALO_REG_A2H_INTERRUPT_STATUS_MASK,
  507             MALO_A2HRIC_BIT_MASK);
  508 
  509         error = malo_hal_fwload_helper(mh, helper);
  510         if (error != 0) {
  511                 device_printf(mh->mh_dev, "failed to load bootrom loader.\n");
  512                 goto fail;
  513         }
  514 
  515         DELAY(200 * MALO_FW_CHECK_USECS);
  516 
  517         error = malo_hal_fwload_main(mh, firmware);
  518         if (error != 0) {
  519                 device_printf(mh->mh_dev, "failed to load firmware.\n");
  520                 goto fail;
  521         }
  522 
  523         /*
  524          * Wait for firmware to startup; we monitor the INT_CODE register
  525          * waiting for a signature to written back indicating it's ready to go.
  526          */
  527         mh->mh_cmdbuf[1] = 0;
  528 
  529         if (opmode != MALO_HOSTCMD_STA_MODE)
  530                 malo_hal_trigger_pcicmd(mh);
  531         
  532         for (i = 0; i < MALO_FW_MAX_NUM_CHECKS; i++) {
  533                 malo_hal_write4(mh, MALO_REG_GEN_PTR, opmode);
  534                 DELAY(MALO_FW_CHECK_USECS);
  535                 if (malo_hal_read4(mh, MALO_REG_INT_CODE) == fwreadysig) {
  536                         malo_hal_write4(mh, MALO_REG_INT_CODE, 0x00);
  537                         return malo_hal_resetstate(mh);
  538                 }
  539         }
  540 
  541         return ETIMEDOUT;
  542 fail:
  543         malo_hal_fw_reset(mh);
  544 
  545         return (error);
  546 }
  547 
  548 /*
  549  * Return "hw specs".  Note this must be the first cmd MUST be done after
  550  * a firmware download or the f/w will lockup.
  551  */
  552 int
  553 malo_hal_gethwspecs(struct malo_hal *mh, struct malo_hal_hwspec *hw)
  554 {
  555         struct malo_cmd_get_hwspec *cmd;
  556         int ret;
  557 
  558         MALO_HAL_LOCK(mh);
  559 
  560         _CMD_SETUP(cmd, struct malo_cmd_get_hwspec, MALO_HOSTCMD_GET_HW_SPEC);
  561         memset(&cmd->permaddr[0], 0xff, IEEE80211_ADDR_LEN);
  562         cmd->ul_fw_awakecookie = htole32((unsigned int)mh->mh_cmdaddr + 2048);
  563 
  564         ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_GET_HW_SPEC);
  565         if (ret == 0) {
  566                 IEEE80211_ADDR_COPY(hw->macaddr, cmd->permaddr);
  567                 hw->wcbbase[0] = le32toh(cmd->wcbbase0) & 0x0000ffff;
  568                 hw->wcbbase[1] = le32toh(cmd->wcbbase1) & 0x0000ffff;
  569                 hw->wcbbase[2] = le32toh(cmd->wcbbase2) & 0x0000ffff;
  570                 hw->wcbbase[3] = le32toh(cmd->wcbbase3) & 0x0000ffff;
  571                 hw->rxdesc_read = le32toh(cmd->rxpdrd_ptr)& 0x0000ffff;
  572                 hw->rxdesc_write = le32toh(cmd->rxpdwr_ptr)& 0x0000ffff;
  573                 hw->regioncode = le16toh(cmd->regioncode) & 0x00ff;
  574                 hw->fw_releasenum = le32toh(cmd->fw_releasenum);
  575                 hw->maxnum_wcb = le16toh(cmd->num_wcb);
  576                 hw->maxnum_mcaddr = le16toh(cmd->num_mcastaddr);
  577                 hw->num_antenna = le16toh(cmd->num_antenna);
  578                 hw->hwversion = cmd->version;
  579                 hw->hostinterface = cmd->hostif;
  580         }
  581 
  582         MALO_HAL_UNLOCK(mh);
  583 
  584         return ret;
  585 }
  586 
  587 void
  588 malo_hal_detach(struct malo_hal *mh)
  589 {
  590 
  591         bus_dmamem_free(mh->mh_dmat, mh->mh_cmdbuf, mh->mh_dmamap);
  592         bus_dmamap_destroy(mh->mh_dmat, mh->mh_dmamap);
  593         bus_dma_tag_destroy(mh->mh_dmat);
  594         mtx_destroy(&mh->mh_mtx);
  595         free(mh, M_DEVBUF);
  596 }
  597 
  598 /*
  599  * Configure antenna use.  Takes effect immediately.
  600  *
  601  * XXX tx antenna setting ignored
  602  * XXX rx antenna setting should always be 3 (for now)
  603  */
  604 int
  605 malo_hal_setantenna(struct malo_hal *mh, enum malo_hal_antenna dirset, int ant)
  606 {
  607         struct malo_cmd_rf_antenna *cmd;
  608         int ret;
  609 
  610         if (!(dirset == MHA_ANTENNATYPE_RX || dirset == MHA_ANTENNATYPE_TX))
  611                 return EINVAL;
  612 
  613         MALO_HAL_LOCK(mh);
  614 
  615         _CMD_SETUP(cmd, struct malo_cmd_rf_antenna,
  616             MALO_HOSTCMD_802_11_RF_ANTENNA);
  617         cmd->action = htole16(dirset);
  618         if (ant == 0) {                 /* default to all/both antennae */
  619                 /* XXX never reach now.  */
  620                 ant = 3;
  621         }
  622         cmd->mode = htole16(ant);
  623 
  624         ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_802_11_RF_ANTENNA);
  625 
  626         MALO_HAL_UNLOCK(mh);
  627 
  628         return ret;
  629 }
  630 
  631 /*
  632  * Configure radio.  Takes effect immediately.
  633  *
  634  * XXX preamble installed after set fixed rate cmd
  635  */
  636 int
  637 malo_hal_setradio(struct malo_hal *mh, int onoff,
  638     enum malo_hal_preamble preamble)
  639 {
  640         struct malo_cmd_radio_control *cmd;
  641         int ret;
  642 
  643         MALO_HAL_LOCK(mh);
  644 
  645         _CMD_SETUP(cmd, struct malo_cmd_radio_control,
  646             MALO_HOSTCMD_802_11_RADIO_CONTROL);
  647         cmd->action = htole16(MALO_HOSTCMD_ACT_GEN_SET);
  648         if (onoff == 0)
  649                 cmd->control = 0;
  650         else
  651                 cmd->control = htole16(preamble);
  652         cmd->radio_on = htole16(onoff);
  653 
  654         ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_802_11_RADIO_CONTROL);
  655 
  656         MALO_HAL_UNLOCK(mh);
  657 
  658         return ret;
  659 }
  660 
  661 /*
  662  * Set the interrupt mask.
  663  */
  664 void
  665 malo_hal_intrset(struct malo_hal *mh, uint32_t mask)
  666 {
  667 
  668         malo_hal_write4(mh, MALO_REG_A2H_INTERRUPT_MASK, 0);
  669         (void)malo_hal_read4(mh, MALO_REG_INT_CODE);
  670 
  671         mh->mh_imask = mask;
  672         malo_hal_write4(mh, MALO_REG_A2H_INTERRUPT_MASK, mask);
  673         (void)malo_hal_read4(mh, MALO_REG_INT_CODE);
  674 }
  675 
  676 int
  677 malo_hal_setchannel(struct malo_hal *mh, const struct malo_hal_channel *chan)
  678 {
  679         struct malo_cmd_fw_set_rf_channel *cmd;
  680         int ret;
  681 
  682         MALO_HAL_LOCK(mh);
  683 
  684         _CMD_SETUP(cmd, struct malo_cmd_fw_set_rf_channel,
  685             MALO_HOSTCMD_SET_RF_CHANNEL);
  686         cmd->action = htole16(MALO_HOSTCMD_ACT_GEN_SET);
  687         cmd->cur_channel = chan->channel;
  688 
  689         ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_SET_RF_CHANNEL);
  690 
  691         MALO_HAL_UNLOCK(mh);
  692 
  693         return ret;
  694 }
  695 
  696 int
  697 malo_hal_settxpower(struct malo_hal *mh, const struct malo_hal_channel *c)
  698 {
  699         struct malo_cmd_rf_tx_power *cmd;
  700         const struct malo_hal_caldata *cal = &mh->mh_caldata;
  701         uint8_t chan = c->channel;
  702         uint16_t pow;
  703         int i, idx, ret;
  704         
  705         MALO_HAL_LOCK(mh);
  706 
  707         _CMD_SETUP(cmd, struct malo_cmd_rf_tx_power,
  708             MALO_HOSTCMD_802_11_RF_TX_POWER);
  709         cmd->action = htole16(MALO_HOSTCMD_ACT_GEN_SET_LIST);
  710         for (i = 0; i < 4; i++) {
  711                 idx = (chan - 1) * 4 + i;
  712                 pow = cal->pt_ratetable_20m[idx];
  713                 cmd->power_levellist[i] = htole16(pow);
  714         }
  715         ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_802_11_RF_TX_POWER);
  716 
  717         MALO_HAL_UNLOCK(mh);
  718 
  719         return ret;
  720 }
  721 
  722 int
  723 malo_hal_setpromisc(struct malo_hal *mh, int enable)
  724 {
  725         /* XXX need host cmd */
  726         return 0;
  727 }
  728 
  729 int
  730 malo_hal_setassocid(struct malo_hal *mh,
  731     const uint8_t bssid[IEEE80211_ADDR_LEN], uint16_t associd)
  732 {
  733         struct malo_cmd_fw_set_aid *cmd;
  734         int ret;
  735 
  736         MALO_HAL_LOCK(mh);
  737 
  738         _CMD_SETUP(cmd, struct malo_cmd_fw_set_aid,
  739             MALO_HOSTCMD_SET_AID);
  740         cmd->cmdhdr.seqnum = 1;
  741         cmd->associd = htole16(associd);
  742         IEEE80211_ADDR_COPY(&cmd->macaddr[0], bssid);
  743         
  744         ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_SET_AID);
  745         MALO_HAL_UNLOCK(mh);
  746         return ret;
  747 }
  748 
  749 /*
  750  * Kick the firmware to tell it there are new tx descriptors
  751  * for processing.  The driver says what h/w q has work in
  752  * case the f/w ever gets smarter.
  753  */
  754 void
  755 malo_hal_txstart(struct malo_hal *mh, int qnum)
  756 {
  757         bus_space_write_4(mh->mh_iot, mh->mh_ioh,
  758             MALO_REG_H2A_INTERRUPT_EVENTS, MALO_H2ARIC_BIT_PPA_READY);
  759         (void) bus_space_read_4(mh->mh_iot, mh->mh_ioh, MALO_REG_INT_CODE);
  760 }
  761 
  762 /*
  763  * Return the current ISR setting and clear the cause.
  764  */
  765 void
  766 malo_hal_getisr(struct malo_hal *mh, uint32_t *status)
  767 {
  768         uint32_t cause;
  769 
  770         cause = bus_space_read_4(mh->mh_iot, mh->mh_ioh,
  771             MALO_REG_A2H_INTERRUPT_CAUSE);
  772         if (cause == 0xffffffff) {      /* card removed */
  773                 cause = 0;
  774         } else if (cause != 0) {
  775                 /* clear cause bits */
  776                 bus_space_write_4(mh->mh_iot, mh->mh_ioh,
  777                     MALO_REG_A2H_INTERRUPT_CAUSE, cause &~ mh->mh_imask);
  778                 (void) bus_space_read_4(mh->mh_iot, mh->mh_ioh,
  779                     MALO_REG_INT_CODE);
  780                 cause &= mh->mh_imask;
  781         }
  782 
  783         *status = cause;
  784 }
  785 
  786 /*
  787  * Callback from the driver on a cmd done interrupt.  Nothing to do right
  788  * now as we spin waiting for cmd completion.
  789  */
  790 void
  791 malo_hal_cmddone(struct malo_hal *mh)
  792 {
  793         /* NB : do nothing.  */
  794 }
  795 
  796 int
  797 malo_hal_prescan(struct malo_hal *mh)
  798 {
  799         struct malo_cmd_prescan *cmd;
  800         int ret;
  801 
  802         MALO_HAL_LOCK(mh);
  803 
  804         _CMD_SETUP(cmd, struct malo_cmd_prescan, MALO_HOSTCMD_SET_PRE_SCAN);
  805         cmd->cmdhdr.seqnum = 1;
  806         
  807         ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_SET_PRE_SCAN);
  808 
  809         MALO_HAL_UNLOCK(mh);
  810 
  811         return ret;
  812 }
  813 
  814 int
  815 malo_hal_postscan(struct malo_hal *mh, uint8_t *macaddr, uint8_t ibsson)
  816 {
  817         struct malo_cmd_postscan *cmd;
  818         int ret;
  819 
  820         MALO_HAL_LOCK(mh);
  821 
  822         _CMD_SETUP(cmd, struct malo_cmd_postscan, MALO_HOSTCMD_SET_POST_SCAN);
  823         cmd->cmdhdr.seqnum = 1;
  824         cmd->isibss = htole32(ibsson);
  825         IEEE80211_ADDR_COPY(&cmd->bssid[0], macaddr);
  826 
  827         ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_SET_POST_SCAN);
  828 
  829         MALO_HAL_UNLOCK(mh);
  830 
  831         return ret;
  832 }
  833 
  834 int
  835 malo_hal_set_slot(struct malo_hal *mh, int is_short)
  836 {
  837         int ret;
  838         struct malo_cmd_fw_setslot *cmd;
  839 
  840         MALO_HAL_LOCK(mh);
  841 
  842         _CMD_SETUP(cmd, struct malo_cmd_fw_setslot, MALO_HOSTCMD_SET_SLOT);
  843         cmd->action = htole16(MALO_HOSTCMD_ACT_GEN_SET);
  844         cmd->slot = (is_short == 1 ? 1 : 0);
  845 
  846         ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_SET_SLOT);
  847 
  848         MALO_HAL_UNLOCK(mh);
  849 
  850         return ret;
  851 }
  852 
  853 int
  854 malo_hal_set_rate(struct malo_hal *mh, uint16_t curmode, uint8_t rate)
  855 {
  856         int i, ret;
  857         struct malo_cmd_set_rate *cmd;
  858 
  859         MALO_HAL_LOCK(mh);
  860 
  861         _CMD_SETUP(cmd, struct malo_cmd_set_rate, MALO_HOSTCMD_SET_RATE);
  862         cmd->aprates[0] = 2;
  863         cmd->aprates[1] = 4;
  864         cmd->aprates[2] = 11;
  865         cmd->aprates[3] = 22;
  866         if (curmode == IEEE80211_MODE_11G) {
  867                 cmd->aprates[4] = 0;            /* XXX reserved?  */
  868                 cmd->aprates[5] = 12;
  869                 cmd->aprates[6] = 18;
  870                 cmd->aprates[7] = 24;
  871                 cmd->aprates[8] = 36;
  872                 cmd->aprates[9] = 48;
  873                 cmd->aprates[10] = 72;
  874                 cmd->aprates[11] = 96;
  875                 cmd->aprates[12] = 108;
  876         }
  877 
  878         if (rate != 0) {
  879                 /* fixed rate */
  880                 for (i = 0; i < 13; i++) {
  881                         if (cmd->aprates[i] == rate) {
  882                                 cmd->rateindex = i;
  883                                 cmd->dataratetype = 1;
  884                                 break;
  885                         }
  886                 }
  887         }
  888 
  889         ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_SET_RATE);
  890 
  891         MALO_HAL_UNLOCK(mh);
  892 
  893         return ret;
  894 }
  895 
  896 int
  897 malo_hal_setmcast(struct malo_hal *mh, int nmc, const uint8_t macs[])
  898 {
  899         struct malo_cmd_mcast *cmd;
  900         int ret;
  901 
  902         if (nmc > MALO_HAL_MCAST_MAX)
  903                 return EINVAL;
  904 
  905         MALO_HAL_LOCK(mh);
  906 
  907         _CMD_SETUP(cmd, struct malo_cmd_mcast, MALO_HOSTCMD_MAC_MULTICAST_ADR);
  908         memcpy(cmd->maclist, macs, nmc * IEEE80211_ADDR_LEN);
  909         cmd->numaddr = htole16(nmc);
  910         cmd->action = htole16(0xffff);
  911 
  912         ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_MAC_MULTICAST_ADR);
  913 
  914         MALO_HAL_UNLOCK(mh);
  915 
  916         return ret;
  917 }

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