orinoco: Move hardware functions into separate file
No functional change.
Signed-off-by: David Kilroy <kilroyd@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/orinoco/hw.c b/drivers/net/wireless/orinoco/hw.c
new file mode 100644
index 0000000..081428d
--- /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;
+}