1 files changed, 2530 insertions, 0 deletions

diff --git a/drivers/net/wireless/bcmdhd/dhd_cdc.c b/drivers/net/wireless/bcmdhd/dhd_cdc.c
new file mode 100644
index 00000000000..3a4de96c002
--- /dev/null
+++ b/drivers/net/wireless/bcmdhd/dhd_cdc.c
@@ -0,0 +1,2530 @@
+/*
+ * DHD Protocol Module for CDC and BDC.
+ *
+ * Copyright (C) 1999-2011, 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 1.51.6.31 2011-02-09 14:31:43 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 PROP_TXSTATUS
+#include <wlfc_proto.h>
+#include <dhd_wlfc.h>
+#endif
+
+
+#define RETRIES 2               /* # of retries to retrieve matching ioctl response */
+#define BUS_HEADER_LEN  (16+DHD_SDALIGN)        /* Must be at least 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
+                                 */
+
+#define BUS_RETRIES 1   /* # of retries before aborting a bus tx operation */
+
+#ifdef PROP_TXSTATUS
+typedef struct dhd_wlfc_commit_info {
+        uint8                                   needs_hdr;
+        uint8                                   ac_fifo_credit_spent;
+        ewlfc_packet_state_t    pkt_type;
+        wlfc_mac_descriptor_t*  mac_entry;
+        void*                                   p;
+} dhd_wlfc_commit_info_t;
+#endif /* PROP_TXSTATUS */
+
+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)
+{
+        int err = 0;
+        dhd_prot_t *prot = dhd->prot;
+        int len = ltoh32(prot->msg.len) + sizeof(cdc_ioctl_t);
+
+        DHD_TRACE(("%s: Enter\n", __FUNCTION__));
+
+        DHD_OS_WAKE_LOCK(dhd);
+
+        /* 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 */
+        err = dhd_bus_txctl(dhd->bus, (uchar*)&prot->msg, len);
+
+        DHD_OS_WAKE_UNLOCK(dhd);
+        return err;
+}
+
+static int
+dhdcdc_cmplt(dhd_pub_t *dhd, uint32 id, uint32 len)
+{
+        int ret;
+        int cdc_len = len+sizeof(cdc_ioctl_t);
+        dhd_prot_t *prot = dhd->prot;
+
+        DHD_TRACE(("%s: Enter\n", __FUNCTION__));
+
+        do {
+                ret = dhd_bus_rxctl(dhd->bus, (uchar*)&prot->msg, cdc_len);
+                if (ret < 0)
+                        break;
+        } while (CDC_IOC_ID(ltoh32(prot->msg.flags)) != id);
+
+        return ret;
+}
+
+static int
+dhdcdc_query_ioctl(dhd_pub_t *dhd, int ifidx, uint cmd, void *buf, uint len, uint8 action)
+{
+        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);
+        /* add additional action bits */
+        action &= WL_IOCTL_ACTION_MASK;
+        msg->flags |= (action << CDCF_IOC_ACTION_SHIFT);
+        msg->flags = htol32(msg->flags);
+
+        if (buf)
+                memcpy(prot->buf, buf, len);
+
+        if ((ret = dhdcdc_msg(dhd)) < 0) {
+                if (!dhd->hang_was_sent)
+                        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;
+}
+