| /* |
| * Copyright (c) 2010 Broadcom Corporation |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include <linux/types.h> |
| #include <bcmdefs.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 { |
| u16 reqid; |
| u8 pending; |
| u32 lastcmd; |
| u8 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", __func__)); |
| |
| /* 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, (unsigned char *)&prot->msg, len); |
| } |
| |
| static int dhdcdc_cmplt(dhd_pub_t *dhd, u32 id, u32 len) |
| { |
| int ret; |
| dhd_prot_t *prot = dhd->prot; |
| |
| DHD_TRACE(("%s: Enter\n", __func__)); |
| |
| do { |
| ret = |
| dhd_bus_rxctl(dhd->bus, (unsigned char *)&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; |
| u32 id, flags = 0; |
| |
| DHD_TRACE(("%s: Enter\n", __func__)); |
| DHD_CTL(("%s: cmd %d len %d\n", __func__, 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); |
| |
| ret = dhdcdc_msg(dhd); |
| if (ret < 0) { |
| DHD_ERROR(("dhdcdc_query_ioctl: dhdcdc_msg failed w/status " |
| "%d\n", ret)); |
| goto done; |
| } |
| |
| retry: |
| /* wait for interrupt and get first fragment */ |
| ret = dhdcdc_cmplt(dhd, prot->reqid, len); |
| if (ret < 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), __func__, 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; |
| u32 flags, id; |
| |
| DHD_TRACE(("%s: Enter\n", __func__)); |
| DHD_CTL(("%s: cmd %d len %d\n", __func__, 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); |
| |
| ret = dhdcdc_msg(dhd); |
| if (ret < 0) |
| goto done; |
| |
| ret = dhdcdc_cmplt(dhd, prot->reqid, len); |
| if (ret < 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), __func__, 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", |
| __func__)); |
| return ret; |
| } |
| dhd_os_proto_block(dhd); |
| |
| DHD_TRACE(("%s: Enter\n", __func__)); |
| |
| 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 = (u8) 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", __func__)); |
| |
| #ifdef BDC |
| /* Push BDC header used to convey priority for buses that don't */ |
| |
| PKTPUSH(pktbuf, BDC_HEADER_LEN); |
| |
| h = (struct bdc_header *)PKTDATA(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, u8 * fcbits) |
| { |
| #ifdef BDC |
| struct bdc_header *h; |
| |
| if (PKTLEN(pktbuf) < BDC_HEADER_LEN) { |
| DHD_ERROR(("%s: rx data too short (%d < %d)\n", |
| __func__, PKTLEN(pktbuf), BDC_HEADER_LEN)); |
| return BCME_ERROR; |
| } |
| |
| h = (struct bdc_header *)PKTDATA(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", __func__)); |
| |
| #ifdef BDC |
| /* Pop BDC header used to convey priority for buses that don't */ |
| |
| if (PKTLEN(pktbuf) < BDC_HEADER_LEN) { |
| DHD_ERROR(("%s: rx data too short (%d < %d)\n", __func__, |
| PKTLEN(pktbuf), BDC_HEADER_LEN)); |
| return BCME_ERROR; |
| } |
| |
| h = (struct bdc_header *)PKTDATA(pktbuf); |
| |
| *ifidx = BDC_GET_IF_IDX(h); |
| if (*ifidx >= DHD_MAX_IFS) { |
| DHD_ERROR(("%s: rx data ifnum out of range (%d)\n", |
| __func__, *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(pktbuf, BDC_HEADER_LEN); |
| #endif /* BDC */ |
| |
| return 0; |
| } |
| |
| int dhd_prot_attach(dhd_pub_t *dhd) |
| { |
| dhd_prot_t *cdc; |
| |
| cdc = kzalloc(sizeof(dhd_prot_t), GFP_ATOMIC); |
| if (!cdc) { |
| DHD_ERROR(("%s: kmalloc failed\n", __func__)); |
| goto fail; |
| } |
| |
| /* ensure that the msg buf directly follows the cdc msg struct */ |
| if ((unsigned long)(&cdc->msg + 1) != (unsigned long)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: |
| if (cdc != NULL) |
| kfree(cdc); |
| return BCME_NOMEM; |
| } |
| |
| /* ~NOTE~ What if another thread is waiting on the semaphore? Holding it? */ |
| void dhd_prot_detach(dhd_pub_t *dhd) |
| { |
| kfree(dhd->prot); |
| 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", __func__)); |
| |
| 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 */ |
| } |