1 files changed, 586 insertions, 0 deletions

diff --git a/drivers/net/wireless/orinoco/hw.c b/drivers/net/wireless/orinoco/hw.c
new file mode 100644
index 000000000000..081428d9409e
--- /dev/null
+++ b/drivers/net/wireless/orinoco/hw.c
@@ -0,0 +1,586 @@
+/* Encapsulate basic setting changes and retrieval on Hermes hardware
+ *
+ * See copyright notice in main.c
+ */
+#include <linux/kernel.h>
+#include <linux/if_arp.h>
+#include <linux/ieee80211.h>
+#include <linux/wireless.h>
+
+#include "hermes.h"
+#include "hermes_rid.h"
+#include "orinoco.h"
+
+#include "hw.h"
+
+/********************************************************************/
+/* Data tables                                                      */
+/********************************************************************/
+
+/* This tables gives the actual meanings of the bitrate IDs returned
+ * by the firmware. */
+static const struct {
+	int bitrate; /* in 100s of kilobits */
+	int automatic;
+	u16 agere_txratectrl;
+	u16 intersil_txratectrl;
+} bitrate_table[] = {
+	{110, 1,  3, 15}, /* Entry 0 is the default */
+	{10,  0,  1,  1},
+	{10,  1,  1,  1},
+	{20,  0,  2,  2},
+	{20,  1,  6,  3},
+	{55,  0,  4,  4},
+	{55,  1,  7,  7},
+	{110, 0,  5,  8},
+};
+#define BITRATE_TABLE_SIZE ARRAY_SIZE(bitrate_table)
+
+int orinoco_get_bitratemode(int bitrate, int automatic)
+{
+	int ratemode = -1;
+	int i;
+
+	if ((bitrate != 10) && (bitrate != 20) &&
+	    (bitrate != 55) && (bitrate != 110))
+		return ratemode;
+
+	for (i = 0; i < BITRATE_TABLE_SIZE; i++) {
+		if ((bitrate_table[i].bitrate == bitrate) &&
+		    (bitrate_table[i].automatic == automatic)) {
+			ratemode = i;
+			break;
+		}
+	}
+	return ratemode;
+}
+
+void orinoco_get_ratemode_cfg(int ratemode, int *bitrate, int *automatic)
+{
+	BUG_ON((ratemode < 0) || (ratemode >= BITRATE_TABLE_SIZE));
+
+	*bitrate = bitrate_table[ratemode].bitrate * 100000;
+	*automatic = bitrate_table[ratemode].automatic;
+}
+
+/* Get tsc from the firmware */
+int orinoco_hw_get_tkip_iv(struct orinoco_private *priv, int key, u8 *tsc)
+{
+	hermes_t *hw = &priv->hw;
+	int err = 0;
+	u8 tsc_arr[4][IW_ENCODE_SEQ_MAX_SIZE];
+
+	if ((key < 0) || (key > 4))
+		return -EINVAL;
+
+	err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CURRENT_TKIP_IV,
+			      sizeof(tsc_arr), NULL, &tsc_arr);
+	if (!err)
+		memcpy(tsc, &tsc_arr[key][0], sizeof(tsc_arr[0]));
+
+	return err;
+}
+
+int __orinoco_hw_set_bitrate(struct orinoco_private *priv)
+{
+	hermes_t *hw = &priv->hw;
+	int ratemode = priv->bitratemode;
+	int err = 0;
+
+	if (ratemode >= BITRATE_TABLE_SIZE) {
+		printk(KERN_ERR "%s: BUG: Invalid bitrate mode %d\n",
+		       priv->ndev->name, ratemode);
+		return -EINVAL;
+	}
+
+	switch (priv->firmware_type) {
+	case FIRMWARE_TYPE_AGERE:
+		err = hermes_write_wordrec(hw, USER_BAP,
+				HERMES_RID_CNFTXRATECONTROL,
+				bitrate_table[ratemode].agere_txratectrl);
+		break;
+	case FIRMWARE_TYPE_INTERSIL:
+	case FIRMWARE_TYPE_SYMBOL:
+		err = hermes_write_wordrec(hw, USER_BAP,
+				HERMES_RID_CNFTXRATECONTROL,
+				bitrate_table[ratemode].intersil_txratectrl);
+		break;
+	default:
+		BUG();
+	}
+
+	return err;
+}
+
+int orinoco_hw_get_act_bitrate(struct orinoco_private *priv, int *bitrate)
+{
+	hermes_t *hw = &priv->hw;
+	int i;
+	int err = 0;
+	u16 val;
+
+	err = hermes_read_wordrec(hw, USER_BAP,
+				  HERMES_RID_CURRENTTXRATE, &val);
+	if (err)
+		return err;
+
+	switch (priv->firmware_type) {
+	case FIRMWARE_TYPE_AGERE: /* Lucent style rate */
+		/* Note : in Lucent firmware, the return value of
+		 * HERMES_RID_CURRENTTXRATE is the bitrate in Mb/s,
+		 * and therefore is totally different from the
+		 * encoding of HERMES_RID_CNFTXRATECONTROL.
+		 * Don't forget that 6Mb/s is really 5.5Mb/s */
+		if (val == 6)
+			*bitrate = 5500000;
+		else
+			*bitrate = val * 1000000;
+		break;
+	case FIRMWARE_TYPE_INTERSIL: /* Intersil style rate */
+	case FIRMWARE_TYPE_SYMBOL: /* Symbol style rate */
+		for (i = 0; i < BITRATE_TABLE_SIZE; i++)
+			if (bitrate_table[i].intersil_txratectrl == val)
+				break;
+
+		if (i >= BITRATE_TABLE_SIZE)
+			printk(KERN_INFO "%s: Unable to determine current bitrate (0x%04hx)\n",
+			       priv->ndev->name, val);
+
+		*bitrate = bitrate_table[i].bitrate * 100000;
+		break;
+	default:
+		BUG();
+	}
+
+	return err;
+}
+
+/* Set fixed AP address */
+int __orinoco_hw_set_wap(struct orinoco_private *priv)
+{
+	int roaming_flag;
+	int err = 0;
+	hermes_t *hw = &priv->hw;
+
+	switch (priv->firmware_type) {
+	case FIRMWARE_TYPE_AGERE:
+		/* not supported */
+		break;
+	case FIRMWARE_TYPE_INTERSIL:
+		if (priv->bssid_fixed)
+			roaming_flag = 2;
+		else
+			roaming_flag = 1;
+
+		err = hermes_write_wordrec(hw, USER_BAP,
+					   HERMES_RID_CNFROAMINGMODE,
+					   roaming_flag);
+		break;
+	case FIRMWARE_TYPE_SYMBOL:
+		err = HERMES_WRITE_RECORD(hw, USER_BAP,
+					  HERMES_RID_CNFMANDATORYBSSID_SYMBOL,
+					  &priv->desired_bssid);
+		break;
+	}
+	return err;
+}
+
+/* Change the WEP keys and/or the current keys.  Can be called
+ * either from __orinoco_hw_setup_enc() or directly from
+ * orinoco_ioctl_setiwencode().  In the later case the association
+ * with the AP is not broken (if the firmware can handle it),
+ * which is needed for 802.1x implementations. */
+int __orinoco_hw_setup_wepkeys(struct orinoco_private *priv)
+{
+	hermes_t *hw = &priv->hw;
+	int err = 0;
+
+	switch (priv->firmware_type) {
+	case FIRMWARE_TYPE_AGERE:
+		err = HERMES_WRITE_RECORD(hw, USER_BAP,
+					  HERMES_RID_CNFWEPKEYS_AGERE,
+					  &priv->keys);
+		if (err)
+			return err;
+		err = hermes_write_wordrec(hw, USER_BAP,
+					   HERMES_RID_CNFTXKEY_AGERE,
+					   priv->tx_key);
+		if (err)
+			return err;
+		break;
+	case FIRMWARE_TYPE_INTERSIL:
+	case FIRMWARE_TYPE_SYMBOL:
+		{
+			int keylen;
+			int i;
+
+			/* Force uniform key length to work around
+			 * firmware bugs */
+			keylen = le16_to_cpu(priv->keys[priv->tx_key].len);
+
+			if (keylen > LARGE_KEY_SIZE) {
+				printk(KERN_ERR "%s: BUG: Key %d has oversize length %d.\n",
+				       priv->ndev->name, priv->tx_key, keylen);
+				return -E2BIG;
+			}
+
+			/* Write all 4 keys */
+			for (i = 0; i < ORINOCO_MAX_KEYS; i++) {
+				err = hermes_write_ltv(hw, USER_BAP,
+						HERMES_RID_CNFDEFAULTKEY0 + i,
+						HERMES_BYTES_TO_RECLEN(keylen),
+						priv->keys[i].data);
+				if (err)
+					return err;
+			}
+
+			/* Write the index of the key used in transmission */
+			err = hermes_write_wordrec(hw, USER_BAP,
+						HERMES_RID_CNFWEPDEFAULTKEYID,
+						priv->tx_key);
+			if (err)
+				return err;
+		}
+		break;
+	}
+
+	return 0;
+}
+
+int __orinoco_hw_setup_enc(struct orinoco_private *priv)
+{
+	hermes_t *hw = &priv->hw;
+	int err = 0;
+	int master_wep_flag;
+	int auth_flag;
+	int enc_flag;
+
+	/* Setup WEP keys for WEP and WPA */
+	if (priv->encode_alg)
+		__orinoco_hw_setup_wepkeys(priv);
+
+	if (priv->wep_restrict)
+		auth_flag = HERMES_AUTH_SHARED_KEY;
+	else
+		auth_flag = HERMES_AUTH_OPEN;
+
+	if (priv->wpa_enabled)
+		enc_flag = 2;
+	else if (priv->encode_alg == IW_ENCODE_ALG_WEP)
+		enc_flag = 1;
+	else
+		enc_flag = 0;
+
+	switch (priv->firmware_type) {
+	case FIRMWARE_TYPE_AGERE: /* Agere style WEP */
+		if (priv->encode_alg == IW_ENCODE_ALG_WEP) {
+			/* Enable the shared-key authentication. */
+			err = hermes_write_wordrec(hw, USER_BAP,
+					HERMES_RID_CNFAUTHENTICATION_AGERE,
+					auth_flag);
+		}
+		err = hermes_write_wordrec(hw, USER_BAP,
+					   HERMES_RID_CNFWEPENABLED_AGERE,
+					   enc_flag);
+		if (err)
+			return err;
+
+		if (priv->has_wpa) {
+			/* Set WPA key management */
+			err = hermes_write_wordrec(hw, USER_BAP,
+				  HERMES_RID_CNFSETWPAAUTHMGMTSUITE_AGERE,
+				  priv->key_mgmt);
+			if (err)
+				return err;
+		}
+
+		break;
+
+	case FIRMWARE_TYPE_INTERSIL: /* Intersil style WEP */
+	case FIRMWARE_TYPE_SYMBOL: /* Symbol style WEP */
+		if (priv->encode_alg == IW_ENCODE_ALG_WEP) {
+			if (priv->wep_restrict ||
+			    (priv->firmware_type == FIRMWARE_TYPE_SYMBOL))
+				master_wep_flag = HERMES_WEP_PRIVACY_INVOKED |
+						  HERMES_WEP_EXCL_UNENCRYPTED;
+			else
+				master_wep_flag = HERMES_WEP_PRIVACY_INVOKED;
+
+			err = hermes_write_wordrec(hw, USER_BAP,
+						   HERMES_RID_CNFAUTHENTICATION,
+						   auth_flag);
+			if (err)
+				return err;
+		} else
+			master_wep_flag = 0;
+
+		if (priv->iw_mode == IW_MODE_MONITOR)
+			master_wep_flag |= HERMES_WEP_HOST_DECRYPT;
+
+		/* Master WEP setting : on/off */
+		err = hermes_write_wordrec(hw, USER_BAP,
+					   HERMES_RID_CNFWEPFLAGS_INTERSIL,
+					   master_wep_flag);
+		if (err)
+			return err;
+
+		break;
+	}
+
+	return 0;
+}
+
+/* key must be 32 bytes, including the tx and rx MIC keys.
+ * rsc must be 8 bytes
+ * tsc must be 8 bytes or NULL
+ */
+int __orinoco_hw_set_tkip_key(hermes_t *hw, int key_idx, int set_tx,
+			      u8 *key, u8 *rsc, u8 *tsc)
+{
+	struct {
+		__le16 idx;
+		u8 rsc[IW_ENCODE_SEQ_MAX_SIZE];
+		u8 key[TKIP_KEYLEN];
+		u8 tx_mic[MIC_KEYLEN];
+		u8 rx_mic[MIC_KEYLEN];
+		u8 tsc[IW_ENCODE_SEQ_MAX_SIZE];
+	} __attribute__ ((packed)) buf;
+	int ret;
+	int err;
+	int k;
+	u16 xmitting;
+
+	key_idx &= 0x3;
+
+	if (set_tx)
+		key_idx |= 0x8000;
+
+	buf.idx = cpu_to_le16(key_idx);
+	memcpy(buf.key, key,
+	       sizeof(buf.key) + sizeof(buf.tx_mic) + sizeof(buf.rx_mic));
+
+	if (rsc == NULL)
+		memset(buf.rsc, 0, sizeof(buf.rsc));
+	else
+		memcpy(buf.rsc, rsc, sizeof(buf.rsc));
+
+	if (tsc == NULL) {
+		memset(buf.tsc, 0, sizeof(buf.tsc));
+		buf.tsc[4] = 0x10;
+	} else {
+		memcpy(buf.tsc, tsc, sizeof(buf.tsc));
+	}
+
+	/* Wait upto 100ms for tx queue to empty */
+	k = 100;
+	do {
+		k--;
+		udelay(1000);
+		ret = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_TXQUEUEEMPTY,
+					  &xmitting);
+		if (ret)
+			break;
+	} while ((k > 0) && xmitting);
+
+	if (k == 0)
+		ret = -ETIMEDOUT;
+
+	err = HERMES_WRITE_RECORD(hw, USER_BAP,
+				  HERMES_RID_CNFADDDEFAULTTKIPKEY_AGERE,
+				  &buf);
+
+	return ret ? ret : err;
+}
+
+int orinoco_clear_tkip_key(struct orinoco_private *priv, int key_idx)
+{
+	hermes_t *hw = &priv->hw;
+	int err;
+
+	memset(&priv->tkip_key[key_idx], 0, sizeof(priv->tkip_key[key_idx]));
+	err = hermes_write_wordrec(hw, USER_BAP,
+				   HERMES_RID_CNFREMDEFAULTTKIPKEY_AGERE,
+				   key_idx);
+	if (err)
+		printk(KERN_WARNING "%s: Error %d clearing TKIP key %d\n",
+		       priv->ndev->name, err, key_idx);
+	return err;
+}
+
+int __orinoco_hw_set_multicast_list(struct orinoco_private *priv,
+				    struct dev_addr_list *mc_list,
+				    int mc_count, int promisc)
+{
+	hermes_t *hw = &priv->hw;
+	int err = 0;
+
+	if (promisc != priv->promiscuous) {
+		err = hermes_write_wordrec(hw, USER_BAP,
+					   HERMES_RID_CNFPROMISCUOUSMODE,
+					   promisc);
+		if (err) {
+			printk(KERN_ERR "%s: Error %d setting PROMISCUOUSMODE to 1.\n",
+			       priv->ndev->name, err);
+		} else
+			priv->promiscuous = promisc;
+	}
+
+	/* If we're not in promiscuous mode, then we need to set the
+	 * group address if either we want to multicast, or if we were
+	 * multicasting and want to stop */
+	if (!promisc && (mc_count || priv->mc_count)) {
+		struct dev_mc_list *p = mc_list;
+		struct hermes_multicast mclist;
+		int i;
+
+		for (i = 0; i < mc_count; i++) {
+			/* paranoia: is list shorter than mc_count? */
+			BUG_ON(!p);
+			/* paranoia: bad address size in list? */
+			BUG_ON(p->dmi_addrlen != ETH_ALEN);
+
+			memcpy(mclist.addr[i], p->dmi_addr, ETH_ALEN);
+			p = p->next;
+		}
+
+		if (p)
+			printk(KERN_WARNING "%s: Multicast list is "
+			       "longer than mc_count\n", priv->ndev->name);
+
+		err = hermes_write_ltv(hw, USER_BAP,
+				   HERMES_RID_CNFGROUPADDRESSES,
+				   HERMES_BYTES_TO_RECLEN(mc_count * ETH_ALEN),
+				   &mclist);
+		if (err)
+			printk(KERN_ERR "%s: Error %d setting multicast list.\n",
+			       priv->ndev->name, err);
+		else
+			priv->mc_count = mc_count;
+	}
+	return err;
+}
+
+/* Return : < 0 -> error code ; >= 0 -> length */
+int orinoco_hw_get_essid(struct orinoco_private *priv, int *active,
+			 char buf[IW_ESSID_MAX_SIZE+1])
+{
+	hermes_t *hw = &priv->hw;
+	int err = 0;
+	struct hermes_idstring essidbuf;
+	char *p = (char *)(&essidbuf.val);
+	int len;
+	unsigned long flags;
+
+	if (orinoco_lock(priv, &flags) != 0)
+		return -EBUSY;
+
+	if (strlen(priv->desired_essid) > 0) {
+		/* We read the desired SSID from the hardware rather
+		   than from priv->desired_essid, just in case the
+		   firmware is allowed to change it on us. I'm not
+		   sure about this */
+		/* My guess is that the OWNSSID should always be whatever
+		 * we set to the card, whereas CURRENT_SSID is the one that
+		 * may change... - Jean II */
+		u16 rid;
+
+		*active = 1;
+
+		rid = (priv->port_type == 3) ? HERMES_RID_CNFOWNSSID :
+			HERMES_RID_CNFDESIREDSSID;
+
+		err = hermes_read_ltv(hw, USER_BAP, rid, sizeof(essidbuf),
+				      NULL, &essidbuf);
+		if (err)
+			goto fail_unlock;
+	} else {
+		*active = 0;
+
+		err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CURRENTSSID,
+				      sizeof(essidbuf), NULL, &essidbuf);
+		if (err)
+			goto fail_unlock;
+	}
+
+	len = le16_to_cpu(essidbuf.len);
+	BUG_ON(len > IW_ESSID_MAX_SIZE);
+
+	memset(buf, 0, IW_ESSID_MAX_SIZE);
+	memcpy(buf, p, len);
+	err = len;
+
+ fail_unlock:
+	orinoco_unlock(priv, &flags);
+
+	return err;
+}
+
+int orinoco_hw_get_freq(struct orinoco_private *priv)
+{
+	hermes_t *hw = &priv->hw;
+	int err = 0;
+	u16 channel;
+	int freq = 0;
+	unsigned long flags;
+
+	if (orinoco_lock(priv, &flags) != 0)
+		return -EBUSY;
+
+	err = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_CURRENTCHANNEL,
+				  &channel);
+	if (err)
+		goto out;
+
+	/* Intersil firmware 1.3.5 returns 0 when the interface is down */
+	if (channel == 0) {
+		err = -EBUSY;
+		goto out;
+	}
+
+	if ((channel < 1) || (channel > NUM_CHANNELS)) {
+		printk(KERN_WARNING "%s: Channel out of range (%d)!\n",
+		       priv->ndev->name, channel);
+		err = -EBUSY;
+		goto out;
+
+	}
+	freq = ieee80211_dsss_chan_to_freq(channel);
+
+ out:
+	orinoco_unlock(priv, &flags);
+
+	if (err > 0)
+		err = -EBUSY;
+	return err ? err : freq;
+}
+
+int orinoco_hw_get_bitratelist(struct orinoco_private *priv,
+			       int *numrates, s32 *rates, int max)
+{
+	hermes_t *hw = &priv->hw;
+	struct hermes_idstring list;
+	unsigned char *p = (unsigned char *)&list.val;
+	int err = 0;
+	int num;
+	int i;
+	unsigned long flags;
+
+	if (orinoco_lock(priv, &flags) != 0)
+		return -EBUSY;
+
+	err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_SUPPORTEDDATARATES,
+			      sizeof(list), NULL, &list);
+	orinoco_unlock(priv, &flags);
+
+	if (err)
+		return err;
+
+	num = le16_to_cpu(list.len);
+	*numrates = num;
+	num = min(num, max);
+
+	for (i = 0; i < num; i++)
+		rates[i] = (p[i] & 0x7f) * 500000; /* convert to bps */
+
+	return 0;
+}