/drivers/net/wireless/bcm4329/src/dhd/sys/dhd_cdc.c
C | 575 lines | 398 code | 112 blank | 65 comment | 64 complexity | 02d38cb6f98688ed5cdcd84368f4e14d MD5 | raw file
Possible License(s): GPL-2.0
- /*
- * DHD Protocol Module for CDC and BDC.
- *
- * Copyright (C) 1999-2010, Broadcom Corporation
- *
- * Unless you and Broadcom execute a separate written software license
- * agreement governing use of this software, this software is licensed to you
- * under the terms of the GNU General Public License version 2 (the "GPL"),
- * available at http://www.broadcom.com/licenses/GPLv2.php, with the
- * following added to such license:
- *
- * As a special exception, the copyright holders of this software give you
- * permission to link this software with independent modules, and to copy and
- * distribute the resulting executable under terms of your choice, provided that
- * you also meet, for each linked independent module, the terms and conditions of
- * the license of that module. An independent module is a module which is not
- * derived from this software. The special exception does not apply to any
- * modifications of the software.
- *
- * Notwithstanding the above, under no circumstances may you combine this
- * software in any way with any other Broadcom software provided under a license
- * other than the GPL, without Broadcom's express prior written consent.
- *
- * $Id: dhd_cdc.c,v 1.22.4.2.4.7.2.41 2010/06/23 19:58:18 Exp $
- *
- * BDC is like CDC, except it includes a header for data packets to convey
- * packet priority over the bus, and flags (e.g. to indicate checksum status
- * for dongle offload).
- */
- #include <typedefs.h>
- #include <osl.h>
- #include <bcmutils.h>
- #include <bcmcdc.h>
- #include <bcmendian.h>
- #include <dngl_stats.h>
- #include <dhd.h>
- #include <dhd_proto.h>
- #include <dhd_bus.h>
- #include <dhd_dbg.h>
- #ifdef CUSTOMER_HW2
- int wifi_get_mac_addr(unsigned char *buf);
- #endif
- extern int dhd_preinit_ioctls(dhd_pub_t *dhd);
- /* Packet alignment for most efficient SDIO (can change based on platform) */
- #ifndef DHD_SDALIGN
- #define DHD_SDALIGN 32
- #endif
- #if !ISPOWEROF2(DHD_SDALIGN)
- #error DHD_SDALIGN is not a power of 2!
- #endif
- #define RETRIES 2 /* # of retries to retrieve matching ioctl response */
- #define BUS_HEADER_LEN (16+DHD_SDALIGN) /* Must be atleast SDPCM_RESERVE
- * defined in dhd_sdio.c (amount of header tha might be added)
- * plus any space that might be needed for alignment padding.
- */
- #define ROUND_UP_MARGIN 2048 /* Biggest SDIO block size possible for
- * round off at the end of buffer
- */
- typedef struct dhd_prot {
- uint16 reqid;
- uint8 pending;
- uint32 lastcmd;
- uint8 bus_header[BUS_HEADER_LEN];
- cdc_ioctl_t msg;
- unsigned char buf[WLC_IOCTL_MAXLEN + ROUND_UP_MARGIN];
- } dhd_prot_t;
- static int
- dhdcdc_msg(dhd_pub_t *dhd)
- {
- dhd_prot_t *prot = dhd->prot;
- int len = ltoh32(prot->msg.len) + sizeof(cdc_ioctl_t);
- DHD_TRACE(("%s: Enter\n", __FUNCTION__));
- /* NOTE : cdc->msg.len holds the desired length of the buffer to be
- * returned. Only up to CDC_MAX_MSG_SIZE of this buffer area
- * is actually sent to the dongle
- */
- if (len > CDC_MAX_MSG_SIZE)
- len = CDC_MAX_MSG_SIZE;
- /* Send request */
- return dhd_bus_txctl(dhd->bus, (uchar*)&prot->msg, len);
- }
- static int
- dhdcdc_cmplt(dhd_pub_t *dhd, uint32 id, uint32 len)
- {
- int ret;
- dhd_prot_t *prot = dhd->prot;
- DHD_TRACE(("%s: Enter\n", __FUNCTION__));
- do {
- ret = dhd_bus_rxctl(dhd->bus, (uchar*)&prot->msg, len+sizeof(cdc_ioctl_t));
- if (ret < 0)
- break;
- } while (CDC_IOC_ID(ltoh32(prot->msg.flags)) != id);
- return ret;
- }
- int
- dhdcdc_query_ioctl(dhd_pub_t *dhd, int ifidx, uint cmd, void *buf, uint len)
- {
- dhd_prot_t *prot = dhd->prot;
- cdc_ioctl_t *msg = &prot->msg;
- void *info;
- int ret = 0, retries = 0;
- uint32 id, flags = 0;
- DHD_TRACE(("%s: Enter\n", __FUNCTION__));
- DHD_CTL(("%s: cmd %d len %d\n", __FUNCTION__, cmd, len));
- /* Respond "bcmerror" and "bcmerrorstr" with local cache */
- if (cmd == WLC_GET_VAR && buf)
- {
- if (!strcmp((char *)buf, "bcmerrorstr"))
- {
- strncpy((char *)buf, bcmerrorstr(dhd->dongle_error), BCME_STRLEN);
- goto done;
- }
- else if (!strcmp((char *)buf, "bcmerror"))
- {
- *(int *)buf = dhd->dongle_error;
- goto done;
- }
- }
- memset(msg, 0, sizeof(cdc_ioctl_t));
- msg->cmd = htol32(cmd);
- msg->len = htol32(len);
- msg->flags = (++prot->reqid << CDCF_IOC_ID_SHIFT);
- CDC_SET_IF_IDX(msg, ifidx);
- msg->flags = htol32(msg->flags);
- if (buf)
- memcpy(prot->buf, buf, len);
- if ((ret = dhdcdc_msg(dhd)) < 0) {
- DHD_ERROR(("dhdcdc_query_ioctl: dhdcdc_msg failed w/status %d\n", ret));
- goto done;
- }
- retry:
- /* wait for interrupt and get first fragment */
- if ((ret = dhdcdc_cmplt(dhd, prot->reqid, len)) < 0)
- goto done;
- flags = ltoh32(msg->flags);
- id = (flags & CDCF_IOC_ID_MASK) >> CDCF_IOC_ID_SHIFT;
- if ((id < prot->reqid) && (++retries < RETRIES))
- goto retry;
- if (id != prot->reqid) {
- DHD_ERROR(("%s: %s: unexpected request id %d (expected %d)\n",
- dhd_ifname(dhd, ifidx), __FUNCTION__, id, prot->reqid));
- ret = -EINVAL;
- goto done;
- }
- /* Check info buffer */
- info = (void*)&msg[1];
- /* Copy info buffer */
- if (buf)
- {
- if (ret < (int)len)
- len = ret;
- memcpy(buf, info, len);
- }
- /* Check the ERROR flag */
- if (flags & CDCF_IOC_ERROR)
- {
- ret = ltoh32(msg->status);
- /* Cache error from dongle */
- dhd->dongle_error = ret;
- }
- done:
- return ret;
- }
- int
- dhdcdc_set_ioctl(dhd_pub_t *dhd, int ifidx, uint cmd, void *buf, uint len)
- {
- dhd_prot_t *prot = dhd->prot;
- cdc_ioctl_t *msg = &prot->msg;
- int ret = 0;
- uint32 flags, id;
- DHD_TRACE(("%s: Enter\n", __FUNCTION__));
- DHD_CTL(("%s: cmd %d len %d\n", __FUNCTION__, cmd, len));
- memset(msg, 0, sizeof(cdc_ioctl_t));
- msg->cmd = htol32(cmd);
- msg->len = htol32(len);
- msg->flags = (++prot->reqid << CDCF_IOC_ID_SHIFT) | CDCF_IOC_SET;
- CDC_SET_IF_IDX(msg, ifidx);
- msg->flags = htol32(msg->flags);
- if (buf)
- memcpy(prot->buf, buf, len);
- if ((ret = dhdcdc_msg(dhd)) < 0)
- goto done;
- if ((ret = dhdcdc_cmplt(dhd, prot->reqid, len)) < 0)
- goto done;
- flags = ltoh32(msg->flags);
- id = (flags & CDCF_IOC_ID_MASK) >> CDCF_IOC_ID_SHIFT;
- if (id != prot->reqid) {
- DHD_ERROR(("%s: %s: unexpected request id %d (expected %d)\n",
- dhd_ifname(dhd, ifidx), __FUNCTION__, id, prot->reqid));
- ret = -EINVAL;
- goto done;
- }
- /* Check the ERROR flag */
- if (flags & CDCF_IOC_ERROR)
- {
- ret = ltoh32(msg->status);
- /* Cache error from dongle */
- dhd->dongle_error = ret;
- }
- done:
- return ret;
- }
- extern int dhd_bus_interface(struct dhd_bus *bus, uint arg, void* arg2);
- int
- dhd_prot_ioctl(dhd_pub_t *dhd, int ifidx, wl_ioctl_t * ioc, void * buf, int len)
- {
- dhd_prot_t *prot = dhd->prot;
- int ret = -1;
- if (dhd->busstate == DHD_BUS_DOWN) {
- DHD_ERROR(("%s : bus is down. we have nothing to do\n", __FUNCTION__));
- return ret;
- }
- dhd_os_proto_block(dhd);
- DHD_TRACE(("%s: Enter\n", __FUNCTION__));
- ASSERT(len <= WLC_IOCTL_MAXLEN);
- if (len > WLC_IOCTL_MAXLEN)
- goto done;
- if (prot->pending == TRUE) {
- DHD_TRACE(("CDC packet is pending!!!! cmd=0x%x (%lu) lastcmd=0x%x (%lu)\n",
- ioc->cmd, (unsigned long)ioc->cmd, prot->lastcmd,
- (unsigned long)prot->lastcmd));
- if ((ioc->cmd == WLC_SET_VAR) || (ioc->cmd == WLC_GET_VAR)) {
- DHD_TRACE(("iovar cmd=%s\n", (char*)buf));
- }
- goto done;
- }
- prot->pending = TRUE;
- prot->lastcmd = ioc->cmd;
- if (ioc->set)
- ret = dhdcdc_set_ioctl(dhd, ifidx, ioc->cmd, buf, len);
- else {
- ret = dhdcdc_query_ioctl(dhd, ifidx, ioc->cmd, buf, len);
- if (ret > 0)
- ioc->used = ret - sizeof(cdc_ioctl_t);
- }
- /* Too many programs assume ioctl() returns 0 on success */
- if (ret >= 0)
- ret = 0;
- else {
- cdc_ioctl_t *msg = &prot->msg;
- ioc->needed = ltoh32(msg->len); /* len == needed when set/query fails from dongle */
- }
- /* Intercept the wme_dp ioctl here */
- if ((!ret) && (ioc->cmd == WLC_SET_VAR) && (!strcmp(buf, "wme_dp"))) {
- int slen, val = 0;
- slen = strlen("wme_dp") + 1;
- if (len >= (int)(slen + sizeof(int)))
- bcopy(((char *)buf + slen), &val, sizeof(int));
- dhd->wme_dp = (uint8) ltoh32(val);
- }
- prot->pending = FALSE;
- done:
- dhd_os_proto_unblock(dhd);
- return ret;
- }
- int
- dhd_prot_iovar_op(dhd_pub_t *dhdp, const char *name,
- void *params, int plen, void *arg, int len, bool set)
- {
- return BCME_UNSUPPORTED;
- }
- void
- dhd_prot_dump(dhd_pub_t *dhdp, struct bcmstrbuf *strbuf)
- {
- bcm_bprintf(strbuf, "Protocol CDC: reqid %d\n", dhdp->prot->reqid);
- }
- void
- dhd_prot_hdrpush(dhd_pub_t *dhd, int ifidx, void *pktbuf)
- {
- #ifdef BDC
- struct bdc_header *h;
- #endif /* BDC */
- DHD_TRACE(("%s: Enter\n", __FUNCTION__));
- #ifdef BDC
- /* Push BDC header used to convey priority for buses that don't */
- PKTPUSH(dhd->osh, pktbuf, BDC_HEADER_LEN);
- h = (struct bdc_header *)PKTDATA(dhd->osh, pktbuf);
- h->flags = (BDC_PROTO_VER << BDC_FLAG_VER_SHIFT);
- if (PKTSUMNEEDED(pktbuf))
- h->flags |= BDC_FLAG_SUM_NEEDED;
- h->priority = (PKTPRIO(pktbuf) & BDC_PRIORITY_MASK);
- h->flags2 = 0;
- h->rssi = 0;
- #endif /* BDC */
- BDC_SET_IF_IDX(h, ifidx);
- }
- bool
- dhd_proto_fcinfo(dhd_pub_t *dhd, void *pktbuf, uint8 *fcbits)
- {
- #ifdef BDC
- struct bdc_header *h;
- if (PKTLEN(dhd->osh, pktbuf) < BDC_HEADER_LEN) {
- DHD_ERROR(("%s: rx data too short (%d < %d)\n",
- __FUNCTION__, PKTLEN(dhd->osh, pktbuf), BDC_HEADER_LEN));
- return BCME_ERROR;
- }
- h = (struct bdc_header *)PKTDATA(dhd->osh, pktbuf);
- *fcbits = h->priority >> BDC_PRIORITY_FC_SHIFT;
- if ((h->flags2 & BDC_FLAG2_FC_FLAG) == BDC_FLAG2_FC_FLAG)
- return TRUE;
- #endif
- return FALSE;
- }
- int
- dhd_prot_hdrpull(dhd_pub_t *dhd, int *ifidx, void *pktbuf)
- {
- #ifdef BDC
- struct bdc_header *h;
- #endif
- DHD_TRACE(("%s: Enter\n", __FUNCTION__));
- #ifdef BDC
- /* Pop BDC header used to convey priority for buses that don't */
- if (PKTLEN(dhd->osh, pktbuf) < BDC_HEADER_LEN) {
- DHD_ERROR(("%s: rx data too short (%d < %d)\n", __FUNCTION__,
- PKTLEN(dhd->osh, pktbuf), BDC_HEADER_LEN));
- return BCME_ERROR;
- }
- h = (struct bdc_header *)PKTDATA(dhd->osh, pktbuf);
- if ((*ifidx = BDC_GET_IF_IDX(h)) >= DHD_MAX_IFS) {
- DHD_ERROR(("%s: rx data ifnum out of range (%d)\n",
- __FUNCTION__, *ifidx));
- return BCME_ERROR;
- }
- if (((h->flags & BDC_FLAG_VER_MASK) >> BDC_FLAG_VER_SHIFT) != BDC_PROTO_VER) {
- DHD_ERROR(("%s: non-BDC packet received, flags 0x%x\n",
- dhd_ifname(dhd, *ifidx), h->flags));
- return BCME_ERROR;
- }
- if (h->flags & BDC_FLAG_SUM_GOOD) {
- DHD_INFO(("%s: BDC packet received with good rx-csum, flags 0x%x\n",
- dhd_ifname(dhd, *ifidx), h->flags));
- PKTSETSUMGOOD(pktbuf, TRUE);
- }
- PKTSETPRIO(pktbuf, (h->priority & BDC_PRIORITY_MASK));
- PKTPULL(dhd->osh, pktbuf, BDC_HEADER_LEN);
- #endif /* BDC */
- return 0;
- }
- int
- dhd_prot_attach(dhd_pub_t *dhd)
- {
- dhd_prot_t *cdc;
- #ifndef DHD_USE_STATIC_BUF
- if (!(cdc = (dhd_prot_t *)MALLOC(dhd->osh, sizeof(dhd_prot_t)))) {
- DHD_ERROR(("%s: kmalloc failed\n", __FUNCTION__));
- goto fail;
- }
- #else
- if (!(cdc = (dhd_prot_t *)dhd_os_prealloc(DHD_PREALLOC_PROT, sizeof(dhd_prot_t)))) {
- DHD_ERROR(("%s: kmalloc failed\n", __FUNCTION__));
- goto fail;
- }
- #endif /* DHD_USE_STATIC_BUF */
- memset(cdc, 0, sizeof(dhd_prot_t));
- /* ensure that the msg buf directly follows the cdc msg struct */
- if ((uintptr)(&cdc->msg + 1) != (uintptr)cdc->buf) {
- DHD_ERROR(("dhd_prot_t is not correctly defined\n"));
- goto fail;
- }
- dhd->prot = cdc;
- #ifdef BDC
- dhd->hdrlen += BDC_HEADER_LEN;
- #endif
- dhd->maxctl = WLC_IOCTL_MAXLEN + sizeof(cdc_ioctl_t) + ROUND_UP_MARGIN;
- return 0;
- fail:
- #ifndef DHD_USE_STATIC_BUF
- if (cdc != NULL)
- MFREE(dhd->osh, cdc, sizeof(dhd_prot_t));
- #endif
- return BCME_NOMEM;
- }
- /* ~NOTE~ What if another thread is waiting on the semaphore? Holding it? */
- void
- dhd_prot_detach(dhd_pub_t *dhd)
- {
- #ifndef DHD_USE_STATIC_BUF
- MFREE(dhd->osh, dhd->prot, sizeof(dhd_prot_t));
- #endif
- dhd->prot = NULL;
- }
- void
- dhd_prot_dstats(dhd_pub_t *dhd)
- {
- /* No stats from dongle added yet, copy bus stats */
- dhd->dstats.tx_packets = dhd->tx_packets;
- dhd->dstats.tx_errors = dhd->tx_errors;
- dhd->dstats.rx_packets = dhd->rx_packets;
- dhd->dstats.rx_errors = dhd->rx_errors;
- dhd->dstats.rx_dropped = dhd->rx_dropped;
- dhd->dstats.multicast = dhd->rx_multicast;
- return;
- }
- int
- dhd_prot_init(dhd_pub_t *dhd)
- {
- int ret = 0;
- char buf[128];
- DHD_TRACE(("%s: Enter\n", __FUNCTION__));
- dhd_os_proto_block(dhd);
- /* Get the device MAC address */
- strcpy(buf, "cur_etheraddr");
- ret = dhdcdc_query_ioctl(dhd, 0, WLC_GET_VAR, buf, sizeof(buf));
- if (ret < 0) {
- dhd_os_proto_unblock(dhd);
- return ret;
- }
- memcpy(dhd->mac.octet, buf, ETHER_ADDR_LEN);
- dhd_os_proto_unblock(dhd);
- #ifdef EMBEDDED_PLATFORM
- ret = dhd_preinit_ioctls(dhd);
- #endif /* EMBEDDED_PLATFORM */
- /* Always assumes wl for now */
- dhd->iswl = TRUE;
- return ret;
- }
- void
- dhd_prot_stop(dhd_pub_t *dhd)
- {
- /* Nothing to do for CDC */
- }
- /* LGE_CHANGE_S, [yoohoo@lge.com], 2009-11-19, Use deepsleep instead of dhd_dev_reset when driver start or stop */
- #if defined(CONFIG_LGE_BCM432X_PATCH) && defined(CONFIG_BRCM_USE_DEEPSLEEP)
- extern dhd_pub_t * get_dhd_pub_from_dev(struct net_device *dev);
- int dhd_deep_sleep(struct net_device *dev, int flag)
- {
- dhd_pub_t *dhd_pub = get_dhd_pub_from_dev(dev);
- char iovbuf[20] = {0};
- uint powervar = 0;
- DHD_TRACE(("%s: Enter Flag -> %d \n", __FUNCTION__, flag));
- if(dhd_pub == NULL)
- return 0;
- switch(flag) {
- case 1: /* DEEPSLEEP ON*/
- printk(KERN_INFO "===== [WiFi] DEEP SLEEP ON =====\n");
-
- /* Disable MPC */
- powervar = 0;
- bcm_mkiovar("mpc", (char *)&powervar, 4, iovbuf, sizeof(iovbuf));
- dhdcdc_set_ioctl(dhd_pub, 0, WLC_SET_VAR, iovbuf, sizeof(iovbuf));
- /* Enable Deep Sleep */
- powervar = 1;
- bcm_mkiovar("deepsleep", (char *)&powervar, 4, iovbuf, sizeof(iovbuf));
- dhdcdc_set_ioctl(dhd_pub, 0, WLC_SET_VAR, iovbuf, sizeof(iovbuf));
- break;
- case 0: /*DEEPSLEEP OFF*/
- printk(KERN_INFO "===== [WiFi] DEEP SLEEP OFF =====\n");
- /* Disable Deep Sleep */
- powervar = 0;
- bcm_mkiovar("deepsleep", (char *)&powervar, 4, iovbuf, sizeof(iovbuf));
- dhdcdc_set_ioctl(dhd_pub, 0, WLC_SET_VAR, iovbuf, sizeof(iovbuf));
- /* Enable MPC */
- powervar = 1;
- bcm_mkiovar("mpc", (char *)&powervar, 4, iovbuf, sizeof(iovbuf));
- dhdcdc_set_ioctl(dhd_pub, 0, WLC_SET_VAR, iovbuf, sizeof(iovbuf));
- break;
- default:
- printk(KERN_ERR "[%s] Invalid Input Flag (%d)",__FUNCTION__, flag);
- }
- return 0;
- }
- #endif /* CONFIG_LGE_BCM432X_PATCH && CONFIG_BRCM_USE_DEEPSLEEP */
- /* LGE_CHANGE_E, [yoohoo@lge.com], 2009-11-19, Use deepsleep instead of dhd_dev_reset when driver start or stop */
- //by sjpark 100827 : merge }