--- /dev/null
+/*
+ * 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 */
+}
projects / mv-sheeva.git / blobdiff