X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=drivers%2Fstaging%2Fbrcm80211%2Fbrcmfmac%2Fdhd_cdc.c;fp=drivers%2Fstaging%2Fbrcm80211%2Fbrcmfmac%2Fdhd_cdc.c;h=bcbaac9bcdcc8af209b28a10463dd2710679efdb;hb=690c12d2c8ca50e55a3f507059c780ecdb8fd83f;hp=0000000000000000000000000000000000000000;hpb=f639011b4020a8230c8d09866f6eaadcb12e8dde;p=mv-sheeva.git

diff --git a/drivers/staging/brcm80211/brcmfmac/dhd_cdc.c b/drivers/staging/brcm80211/brcmfmac/dhd_cdc.c
new file mode 100644
index 00000000000..bcbaac9bcdc
--- /dev/null
+++ b/drivers/staging/brcm80211/brcmfmac/dhd_cdc.c
@@ -0,0 +1,487 @@
+/*
+ * 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 */
+}