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path: root/drivers/net/wireless/b43/main.c
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Diffstat (limited to 'drivers/net/wireless/b43/main.c')
-rw-r--r--drivers/net/wireless/b43/main.c205
1 files changed, 180 insertions, 25 deletions
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 950beefbeae..f5bdf1cae1d 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -80,6 +80,10 @@ static int modparam_nohwcrypt;
module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
+static int modparam_hwtkip;
+module_param_named(hwtkip, modparam_hwtkip, int, 0444);
+MODULE_PARM_DESC(hwtkip, "Enable hardware tkip.");
+
static int modparam_qos = 1;
module_param_named(qos, modparam_qos, int, 0444);
MODULE_PARM_DESC(qos, "Enable QOS support (default on)");
@@ -691,9 +695,9 @@ static void b43_synchronize_irq(struct b43_wldev *dev)
}
/* DummyTransmission function, as documented on
- * http://bcm-specs.sipsolutions.net/DummyTransmission
+ * http://bcm-v4.sipsolutions.net/802.11/DummyTransmission
*/
-void b43_dummy_transmission(struct b43_wldev *dev)
+void b43_dummy_transmission(struct b43_wldev *dev, bool ofdm, bool pa_on)
{
struct b43_wl *wl = dev->wl;
struct b43_phy *phy = &dev->phy;
@@ -707,19 +711,12 @@ void b43_dummy_transmission(struct b43_wldev *dev)
0x00000000,
};
- switch (phy->type) {
- case B43_PHYTYPE_A:
+ if (ofdm) {
max_loop = 0x1E;
buffer[0] = 0x000201CC;
- break;
- case B43_PHYTYPE_B:
- case B43_PHYTYPE_G:
+ } else {
max_loop = 0xFA;
buffer[0] = 0x000B846E;
- break;
- default:
- B43_WARN_ON(1);
- return;
}
spin_lock_irq(&wl->irq_lock);
@@ -728,20 +725,35 @@ void b43_dummy_transmission(struct b43_wldev *dev)
for (i = 0; i < 5; i++)
b43_ram_write(dev, i * 4, buffer[i]);
- /* Commit writes */
- b43_read32(dev, B43_MMIO_MACCTL);
-
b43_write16(dev, 0x0568, 0x0000);
- b43_write16(dev, 0x07C0, 0x0000);
- value = ((phy->type == B43_PHYTYPE_A) ? 1 : 0);
+ if (dev->dev->id.revision < 11)
+ b43_write16(dev, 0x07C0, 0x0000);
+ else
+ b43_write16(dev, 0x07C0, 0x0100);
+ value = (ofdm ? 0x41 : 0x40);
b43_write16(dev, 0x050C, value);
+ if ((phy->type == B43_PHYTYPE_N) || (phy->type == B43_PHYTYPE_LP))
+ b43_write16(dev, 0x0514, 0x1A02);
b43_write16(dev, 0x0508, 0x0000);
b43_write16(dev, 0x050A, 0x0000);
b43_write16(dev, 0x054C, 0x0000);
b43_write16(dev, 0x056A, 0x0014);
b43_write16(dev, 0x0568, 0x0826);
b43_write16(dev, 0x0500, 0x0000);
- b43_write16(dev, 0x0502, 0x0030);
+ if (!pa_on && (phy->type == B43_PHYTYPE_N)) {
+ //SPEC TODO
+ }
+
+ switch (phy->type) {
+ case B43_PHYTYPE_N:
+ b43_write16(dev, 0x0502, 0x00D0);
+ break;
+ case B43_PHYTYPE_LP:
+ b43_write16(dev, 0x0502, 0x0050);
+ break;
+ default:
+ b43_write16(dev, 0x0502, 0x0030);
+ }
if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
b43_radio_write16(dev, 0x0051, 0x0017);
@@ -826,6 +838,85 @@ static void keymac_write(struct b43_wldev *dev, u8 index, const u8 *addr)
(index * 2) + 1, addrtmp[1]);
}
+/* The ucode will use phase1 key with TEK key to decrypt rx packets.
+ * When a packet is received, the iv32 is checked.
+ * - if it doesn't the packet is returned without modification (and software
+ * decryption can be done). That's what happen when iv16 wrap.
+ * - if it does, the rc4 key is computed, and decryption is tried.
+ * Either it will success and B43_RX_MAC_DEC is returned,
+ * either it fails and B43_RX_MAC_DEC|B43_RX_MAC_DECERR is returned
+ * and the packet is not usable (it got modified by the ucode).
+ * So in order to never have B43_RX_MAC_DECERR, we should provide
+ * a iv32 and phase1key that match. Because we drop packets in case of
+ * B43_RX_MAC_DECERR, if we have a correct iv32 but a wrong phase1key, all
+ * packets will be lost without higher layer knowing (ie no resync possible
+ * until next wrap).
+ *
+ * NOTE : this should support 50 key like RCMTA because
+ * (B43_SHM_SH_KEYIDXBLOCK - B43_SHM_SH_TKIPTSCTTAK)/14 = 50
+ */
+static void rx_tkip_phase1_write(struct b43_wldev *dev, u8 index, u32 iv32,
+ u16 *phase1key)
+{
+ unsigned int i;
+ u32 offset;
+ u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
+
+ if (!modparam_hwtkip)
+ return;
+
+ if (b43_new_kidx_api(dev))
+ pairwise_keys_start = B43_NR_GROUP_KEYS;
+
+ B43_WARN_ON(index < pairwise_keys_start);
+ /* We have four default TX keys and possibly four default RX keys.
+ * Physical mac 0 is mapped to physical key 4 or 8, depending
+ * on the firmware version.
+ * So we must adjust the index here.
+ */
+ index -= pairwise_keys_start;
+ B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
+
+ if (b43_debug(dev, B43_DBG_KEYS)) {
+ b43dbg(dev->wl, "rx_tkip_phase1_write : idx 0x%x, iv32 0x%x\n",
+ index, iv32);
+ }
+ /* Write the key to the RX tkip shared mem */
+ offset = B43_SHM_SH_TKIPTSCTTAK + index * (10 + 4);
+ for (i = 0; i < 10; i += 2) {
+ b43_shm_write16(dev, B43_SHM_SHARED, offset + i,
+ phase1key ? phase1key[i / 2] : 0);
+ }
+ b43_shm_write16(dev, B43_SHM_SHARED, offset + i, iv32);
+ b43_shm_write16(dev, B43_SHM_SHARED, offset + i + 2, iv32 >> 16);
+}
+
+static void b43_op_update_tkip_key(struct ieee80211_hw *hw,
+ struct ieee80211_key_conf *keyconf, const u8 *addr,
+ u32 iv32, u16 *phase1key)
+{
+ struct b43_wl *wl = hw_to_b43_wl(hw);
+ struct b43_wldev *dev;
+ int index = keyconf->hw_key_idx;
+
+ if (B43_WARN_ON(!modparam_hwtkip))
+ return;
+
+ mutex_lock(&wl->mutex);
+
+ dev = wl->current_dev;
+ if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
+ goto out_unlock;
+
+ keymac_write(dev, index, NULL); /* First zero out mac to avoid race */
+
+ rx_tkip_phase1_write(dev, index, iv32, phase1key);
+ keymac_write(dev, index, addr);
+
+out_unlock:
+ mutex_unlock(&wl->mutex);
+}
+
static void do_key_write(struct b43_wldev *dev,
u8 index, u8 algorithm,
const u8 *key, size_t key_len, const u8 *mac_addr)
@@ -841,6 +932,19 @@ static void do_key_write(struct b43_wldev *dev,
if (index >= pairwise_keys_start)
keymac_write(dev, index, NULL); /* First zero out mac. */
+ if (algorithm == B43_SEC_ALGO_TKIP) {
+ /*
+ * We should provide an initial iv32, phase1key pair.
+ * We could start with iv32=0 and compute the corresponding
+ * phase1key, but this means calling ieee80211_get_tkip_key
+ * with a fake skb (or export other tkip function).
+ * Because we are lazy we hope iv32 won't start with
+ * 0xffffffff and let's b43_op_update_tkip_key provide a
+ * correct pair.
+ */
+ rx_tkip_phase1_write(dev, index, 0xffffffff, (u16*)buf);
+ } else if (index >= pairwise_keys_start) /* clear it */
+ rx_tkip_phase1_write(dev, index, 0, NULL);
if (key)
memcpy(buf, key, key_len);
key_write(dev, index, algorithm, buf);
@@ -859,6 +963,15 @@ static int b43_key_write(struct b43_wldev *dev,
int i;
int pairwise_keys_start;
+ /* For ALG_TKIP the key is encoded as a 256-bit (32 byte) data block:
+ * - Temporal Encryption Key (128 bits)
+ * - Temporal Authenticator Tx MIC Key (64 bits)
+ * - Temporal Authenticator Rx MIC Key (64 bits)
+ *
+ * Hardware only store TEK
+ */
+ if (algorithm == B43_SEC_ALGO_TKIP && key_len == 32)
+ key_len = 16;
if (key_len > B43_SEC_KEYSIZE)
return -EINVAL;
for (i = 0; i < ARRAY_SIZE(dev->key); i++) {
@@ -965,6 +1078,14 @@ static void b43_dump_keymemory(struct b43_wldev *dev)
printk(" Algo: %04X/%02X", algo, key->algorithm);
if (index >= pairwise_keys_start) {
+ if (key->algorithm == B43_SEC_ALGO_TKIP) {
+ printk(" TKIP: ");
+ offset = B43_SHM_SH_TKIPTSCTTAK + (index - 4) * (10 + 4);
+ for (i = 0; i < 14; i += 2) {
+ u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
+ printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
+ }
+ }
rcmta0 = b43_shm_read32(dev, B43_SHM_RCMTA,
((index - pairwise_keys_start) * 2) + 0);
rcmta1 = b43_shm_read16(dev, B43_SHM_RCMTA,
@@ -1947,8 +2068,12 @@ static int b43_try_request_fw(struct b43_request_fw_context *ctx)
filename = "ucode5";
else if ((rev >= 11) && (rev <= 12))
filename = "ucode11";
- else if (rev >= 13)
+ else if (rev == 13)
filename = "ucode13";
+ else if (rev == 14)
+ filename = "ucode14";
+ else if (rev >= 15)
+ filename = "ucode15";
else
goto err_no_ucode;
err = b43_do_request_fw(ctx, filename, &fw->ucode);
@@ -1996,6 +2121,16 @@ static int b43_try_request_fw(struct b43_request_fw_context *ctx)
else
goto err_no_initvals;
break;
+ case B43_PHYTYPE_LP:
+ if (rev == 13)
+ filename = "lp0initvals13";
+ else if (rev == 14)
+ filename = "lp0initvals14";
+ else if (rev >= 15)
+ filename = "lp0initvals15";
+ else
+ goto err_no_initvals;
+ break;
default:
goto err_no_initvals;
}
@@ -2030,6 +2165,16 @@ static int b43_try_request_fw(struct b43_request_fw_context *ctx)
else
goto err_no_initvals;
break;
+ case B43_PHYTYPE_LP:
+ if (rev == 13)
+ filename = "lp0bsinitvals13";
+ else if (rev == 14)
+ filename = "lp0bsinitvals14";
+ else if (rev >= 15)
+ filename = "lp0bsinitvals15";
+ else
+ goto err_no_initvals;
+ break;
default:
goto err_no_initvals;
}
@@ -2557,6 +2702,7 @@ static void b43_rate_memory_init(struct b43_wldev *dev)
case B43_PHYTYPE_A:
case B43_PHYTYPE_G:
case B43_PHYTYPE_N:
+ case B43_PHYTYPE_LP:
b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
@@ -3587,8 +3733,10 @@ static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
switch (cmd) {
case SET_KEY:
- if (algorithm == B43_SEC_ALGO_TKIP) {
- /* FIXME: No TKIP hardware encryption for now. */
+ if (algorithm == B43_SEC_ALGO_TKIP &&
+ (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
+ !modparam_hwtkip)) {
+ /* We support only pairwise key */
err = -EOPNOTSUPP;
goto out_unlock;
}
@@ -3618,6 +3766,8 @@ static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
}
key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
+ if (algorithm == B43_SEC_ALGO_TKIP)
+ key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
break;
case DISABLE_KEY: {
err = b43_key_clear(dev, key->hw_key_idx);
@@ -3646,7 +3796,7 @@ out_unlock:
static void b43_op_configure_filter(struct ieee80211_hw *hw,
unsigned int changed, unsigned int *fflags,
- int mc_count, struct dev_addr_list *mc_list)
+ u64 multicast)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
@@ -3785,7 +3935,7 @@ static int b43_phy_versioning(struct b43_wldev *dev)
#endif
#ifdef CONFIG_B43_PHY_LP
case B43_PHYTYPE_LP:
- if (phy_rev > 1)
+ if (phy_rev > 2)
unsupported = 1;
break;
#endif
@@ -3842,7 +3992,7 @@ static int b43_phy_versioning(struct b43_wldev *dev)
unsupported = 1;
break;
case B43_PHYTYPE_LP:
- if (radio_ver != 0x2062)
+ if (radio_ver != 0x2062 && radio_ver != 0x2063)
unsupported = 1;
break;
default:
@@ -4345,6 +4495,7 @@ static const struct ieee80211_ops b43_hw_ops = {
.bss_info_changed = b43_op_bss_info_changed,
.configure_filter = b43_op_configure_filter,
.set_key = b43_op_set_key,
+ .update_tkip_key = b43_op_update_tkip_key,
.get_stats = b43_op_get_stats,
.get_tx_stats = b43_op_get_tx_stats,
.get_tsf = b43_op_get_tsf,
@@ -4480,9 +4631,12 @@ static int b43_wireless_core_attach(struct b43_wldev *dev)
case B43_PHYTYPE_A:
have_5ghz_phy = 1;
break;
+ case B43_PHYTYPE_LP: //FIXME not always!
+#if 0 //FIXME enabling 5GHz causes a NULL pointer dereference
+ have_5ghz_phy = 1;
+#endif
case B43_PHYTYPE_G:
case B43_PHYTYPE_N:
- case B43_PHYTYPE_LP:
have_2ghz_phy = 1;
break;
default:
@@ -4497,7 +4651,8 @@ static int b43_wireless_core_attach(struct b43_wldev *dev)
}
if (1 /* disable A-PHY */) {
/* FIXME: For now we disable the A-PHY on multi-PHY devices. */
- if (dev->phy.type != B43_PHYTYPE_N) {
+ if (dev->phy.type != B43_PHYTYPE_N &&
+ dev->phy.type != B43_PHYTYPE_LP) {
have_2ghz_phy = 1;
have_5ghz_phy = 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-19 17:12:15 +0000