diff options
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2500usb.c')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2500usb.c | 309 |
1 files changed, 142 insertions, 167 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c index d3bf7bba611..0447e93306a 100644 --- a/drivers/net/wireless/rt2x00/rt2500usb.c +++ b/drivers/net/wireless/rt2x00/rt2500usb.c @@ -47,7 +47,7 @@ * between each attampt. When the busy bit is still set at that time, * the access attempt is considered to have failed, * and we will print an error. - * If the usb_cache_mutex is already held then the _lock variants must + * If the csr_mutex is already held then the _lock variants must * be used instead. */ static inline void rt2500usb_register_read(struct rt2x00_dev *rt2x00dev, @@ -57,7 +57,7 @@ static inline void rt2500usb_register_read(struct rt2x00_dev *rt2x00dev, __le16 reg; rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ, USB_VENDOR_REQUEST_IN, offset, - ®, sizeof(u16), REGISTER_TIMEOUT); + ®, sizeof(reg), REGISTER_TIMEOUT); *value = le16_to_cpu(reg); } @@ -68,7 +68,7 @@ static inline void rt2500usb_register_read_lock(struct rt2x00_dev *rt2x00dev, __le16 reg; rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_READ, USB_VENDOR_REQUEST_IN, offset, - ®, sizeof(u16), REGISTER_TIMEOUT); + ®, sizeof(reg), REGISTER_TIMEOUT); *value = le16_to_cpu(reg); } @@ -89,7 +89,7 @@ static inline void rt2500usb_register_write(struct rt2x00_dev *rt2x00dev, __le16 reg = cpu_to_le16(value); rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE, USB_VENDOR_REQUEST_OUT, offset, - ®, sizeof(u16), REGISTER_TIMEOUT); + ®, sizeof(reg), REGISTER_TIMEOUT); } static inline void rt2500usb_register_write_lock(struct rt2x00_dev *rt2x00dev, @@ -99,7 +99,7 @@ static inline void rt2500usb_register_write_lock(struct rt2x00_dev *rt2x00dev, __le16 reg = cpu_to_le16(value); rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_WRITE, USB_VENDOR_REQUEST_OUT, offset, - ®, sizeof(u16), REGISTER_TIMEOUT); + ®, sizeof(reg), REGISTER_TIMEOUT); } static inline void rt2500usb_register_multiwrite(struct rt2x00_dev *rt2x00dev, @@ -112,53 +112,53 @@ static inline void rt2500usb_register_multiwrite(struct rt2x00_dev *rt2x00dev, REGISTER_TIMEOUT16(length)); } -static u16 rt2500usb_bbp_check(struct rt2x00_dev *rt2x00dev) +static int rt2500usb_regbusy_read(struct rt2x00_dev *rt2x00dev, + const unsigned int offset, + struct rt2x00_field16 field, + u16 *reg) { - u16 reg; unsigned int i; for (i = 0; i < REGISTER_BUSY_COUNT; i++) { - rt2500usb_register_read_lock(rt2x00dev, PHY_CSR8, ®); - if (!rt2x00_get_field16(reg, PHY_CSR8_BUSY)) - break; + rt2500usb_register_read_lock(rt2x00dev, offset, reg); + if (!rt2x00_get_field16(*reg, field)) + return 1; udelay(REGISTER_BUSY_DELAY); } - return reg; + ERROR(rt2x00dev, "Indirect register access failed: " + "offset=0x%.08x, value=0x%.08x\n", offset, *reg); + *reg = ~0; + + return 0; } +#define WAIT_FOR_BBP(__dev, __reg) \ + rt2500usb_regbusy_read((__dev), PHY_CSR8, PHY_CSR8_BUSY, (__reg)) +#define WAIT_FOR_RF(__dev, __reg) \ + rt2500usb_regbusy_read((__dev), PHY_CSR10, PHY_CSR10_RF_BUSY, (__reg)) + static void rt2500usb_bbp_write(struct rt2x00_dev *rt2x00dev, const unsigned int word, const u8 value) { u16 reg; - mutex_lock(&rt2x00dev->usb_cache_mutex); + mutex_lock(&rt2x00dev->csr_mutex); /* - * Wait until the BBP becomes ready. + * Wait until the BBP becomes available, afterwards we + * can safely write the new data into the register. */ - reg = rt2500usb_bbp_check(rt2x00dev); - if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) - goto exit_fail; - - /* - * Write the data into the BBP. - */ - reg = 0; - rt2x00_set_field16(®, PHY_CSR7_DATA, value); - rt2x00_set_field16(®, PHY_CSR7_REG_ID, word); - rt2x00_set_field16(®, PHY_CSR7_READ_CONTROL, 0); - - rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg); - - mutex_unlock(&rt2x00dev->usb_cache_mutex); - - return; + if (WAIT_FOR_BBP(rt2x00dev, ®)) { + reg = 0; + rt2x00_set_field16(®, PHY_CSR7_DATA, value); + rt2x00_set_field16(®, PHY_CSR7_REG_ID, word); + rt2x00_set_field16(®, PHY_CSR7_READ_CONTROL, 0); -exit_fail: - mutex_unlock(&rt2x00dev->usb_cache_mutex); + rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg); + } - ERROR(rt2x00dev, "PHY_CSR8 register busy. Write failed.\n"); + mutex_unlock(&rt2x00dev->csr_mutex); } static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev, @@ -166,122 +166,107 @@ static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev, { u16 reg; - mutex_lock(&rt2x00dev->usb_cache_mutex); - - /* - * Wait until the BBP becomes ready. - */ - reg = rt2500usb_bbp_check(rt2x00dev); - if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) - goto exit_fail; + mutex_lock(&rt2x00dev->csr_mutex); /* - * Write the request into the BBP. + * Wait until the BBP becomes available, afterwards we + * can safely write the read request into the register. + * After the data has been written, we wait until hardware + * returns the correct value, if at any time the register + * doesn't become available in time, reg will be 0xffffffff + * which means we return 0xff to the caller. */ - reg = 0; - rt2x00_set_field16(®, PHY_CSR7_REG_ID, word); - rt2x00_set_field16(®, PHY_CSR7_READ_CONTROL, 1); + if (WAIT_FOR_BBP(rt2x00dev, ®)) { + reg = 0; + rt2x00_set_field16(®, PHY_CSR7_REG_ID, word); + rt2x00_set_field16(®, PHY_CSR7_READ_CONTROL, 1); - rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg); + rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg); - /* - * Wait until the BBP becomes ready. - */ - reg = rt2500usb_bbp_check(rt2x00dev); - if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) - goto exit_fail; + if (WAIT_FOR_BBP(rt2x00dev, ®)) + rt2500usb_register_read_lock(rt2x00dev, PHY_CSR7, ®); + } - rt2500usb_register_read_lock(rt2x00dev, PHY_CSR7, ®); *value = rt2x00_get_field16(reg, PHY_CSR7_DATA); - mutex_unlock(&rt2x00dev->usb_cache_mutex); - - return; - -exit_fail: - mutex_unlock(&rt2x00dev->usb_cache_mutex); - - ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n"); - *value = 0xff; + mutex_unlock(&rt2x00dev->csr_mutex); } static void rt2500usb_rf_write(struct rt2x00_dev *rt2x00dev, const unsigned int word, const u32 value) { u16 reg; - unsigned int i; if (!word) return; - mutex_lock(&rt2x00dev->usb_cache_mutex); + mutex_lock(&rt2x00dev->csr_mutex); - for (i = 0; i < REGISTER_BUSY_COUNT; i++) { - rt2500usb_register_read_lock(rt2x00dev, PHY_CSR10, ®); - if (!rt2x00_get_field16(reg, PHY_CSR10_RF_BUSY)) - goto rf_write; - udelay(REGISTER_BUSY_DELAY); - } - - mutex_unlock(&rt2x00dev->usb_cache_mutex); - ERROR(rt2x00dev, "PHY_CSR10 register busy. Write failed.\n"); - return; - -rf_write: - reg = 0; - rt2x00_set_field16(®, PHY_CSR9_RF_VALUE, value); - rt2500usb_register_write_lock(rt2x00dev, PHY_CSR9, reg); + /* + * Wait until the RF becomes available, afterwards we + * can safely write the new data into the register. + */ + if (WAIT_FOR_RF(rt2x00dev, ®)) { + reg = 0; + rt2x00_set_field16(®, PHY_CSR9_RF_VALUE, value); + rt2500usb_register_write_lock(rt2x00dev, PHY_CSR9, reg); - reg = 0; - rt2x00_set_field16(®, PHY_CSR10_RF_VALUE, value >> 16); - rt2x00_set_field16(®, PHY_CSR10_RF_NUMBER_OF_BITS, 20); - rt2x00_set_field16(®, PHY_CSR10_RF_IF_SELECT, 0); - rt2x00_set_field16(®, PHY_CSR10_RF_BUSY, 1); + reg = 0; + rt2x00_set_field16(®, PHY_CSR10_RF_VALUE, value >> 16); + rt2x00_set_field16(®, PHY_CSR10_RF_NUMBER_OF_BITS, 20); + rt2x00_set_field16(®, PHY_CSR10_RF_IF_SELECT, 0); + rt2x00_set_field16(®, PHY_CSR10_RF_BUSY, 1); - rt2500usb_register_write_lock(rt2x00dev, PHY_CSR10, reg); - rt2x00_rf_write(rt2x00dev, word, value); + rt2500usb_register_write_lock(rt2x00dev, PHY_CSR10, reg); + rt2x00_rf_write(rt2x00dev, word, value); + } - mutex_unlock(&rt2x00dev->usb_cache_mutex); + mutex_unlock(&rt2x00dev->csr_mutex); } #ifdef CONFIG_RT2X00_LIB_DEBUGFS -#define CSR_OFFSET(__word) ( CSR_REG_BASE + ((__word) * sizeof(u16)) ) - -static void rt2500usb_read_csr(struct rt2x00_dev *rt2x00dev, - const unsigned int word, u32 *data) +static void _rt2500usb_register_read(struct rt2x00_dev *rt2x00dev, + const unsigned int offset, + u32 *value) { - rt2500usb_register_read(rt2x00dev, CSR_OFFSET(word), (u16 *) data); + rt2500usb_register_read(rt2x00dev, offset, (u16 *)value); } -static void rt2500usb_write_csr(struct rt2x00_dev *rt2x00dev, - const unsigned int word, u32 data) +static void _rt2500usb_register_write(struct rt2x00_dev *rt2x00dev, + const unsigned int offset, + u32 value) { - rt2500usb_register_write(rt2x00dev, CSR_OFFSET(word), data); + rt2500usb_register_write(rt2x00dev, offset, value); } static const struct rt2x00debug rt2500usb_rt2x00debug = { .owner = THIS_MODULE, .csr = { - .read = rt2500usb_read_csr, - .write = rt2500usb_write_csr, + .read = _rt2500usb_register_read, + .write = _rt2500usb_register_write, + .flags = RT2X00DEBUGFS_OFFSET, + .word_base = CSR_REG_BASE, .word_size = sizeof(u16), .word_count = CSR_REG_SIZE / sizeof(u16), }, .eeprom = { .read = rt2x00_eeprom_read, .write = rt2x00_eeprom_write, + .word_base = EEPROM_BASE, .word_size = sizeof(u16), .word_count = EEPROM_SIZE / sizeof(u16), }, .bbp = { .read = rt2500usb_bbp_read, .write = rt2500usb_bbp_write, + .word_base = BBP_BASE, .word_size = sizeof(u8), .word_count = BBP_SIZE / sizeof(u8), }, .rf = { .read = rt2x00_rf_read, .write = rt2500usb_rf_write, + .word_base = RF_BASE, .word_size = sizeof(u32), .word_count = RF_SIZE / sizeof(u32), }, @@ -380,7 +365,7 @@ static void rt2500usb_config_intf(struct rt2x00_dev *rt2x00dev, /* * Enable beacon config */ - bcn_preload = PREAMBLE + get_duration(IEEE80211_HEADER, 20); + bcn_preload = PREAMBLE + GET_DURATION(IEEE80211_HEADER, 20); rt2500usb_register_read(rt2x00dev, TXRX_CSR20, ®); rt2x00_set_field16(®, TXRX_CSR20_OFFSET, bcn_preload >> 6); rt2x00_set_field16(®, TXRX_CSR20_BCN_EXPECT_WINDOW, @@ -423,57 +408,16 @@ static void rt2500usb_config_erp(struct rt2x00_dev *rt2x00dev, rt2x00_set_field16(®, TXRX_CSR10_AUTORESPOND_PREAMBLE, !!erp->short_preamble); rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg); -} -static void rt2500usb_config_phymode(struct rt2x00_dev *rt2x00dev, - const int basic_rate_mask) -{ - rt2500usb_register_write(rt2x00dev, TXRX_CSR11, basic_rate_mask); -} + rt2500usb_register_write(rt2x00dev, TXRX_CSR11, erp->basic_rates); -static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev, - struct rf_channel *rf, const int txpower) -{ - /* - * Set TXpower. - */ - rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower)); - - /* - * For RT2525E we should first set the channel to half band higher. - */ - if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) { - static const u32 vals[] = { - 0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2, - 0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba, - 0x000008ba, 0x000008be, 0x000008b7, 0x00000902, - 0x00000902, 0x00000906 - }; - - rt2500usb_rf_write(rt2x00dev, 2, vals[rf->channel - 1]); - if (rf->rf4) - rt2500usb_rf_write(rt2x00dev, 4, rf->rf4); - } - - rt2500usb_rf_write(rt2x00dev, 1, rf->rf1); - rt2500usb_rf_write(rt2x00dev, 2, rf->rf2); - rt2500usb_rf_write(rt2x00dev, 3, rf->rf3); - if (rf->rf4) - rt2500usb_rf_write(rt2x00dev, 4, rf->rf4); + rt2500usb_register_write(rt2x00dev, MAC_CSR10, erp->slot_time); + rt2500usb_register_write(rt2x00dev, MAC_CSR11, erp->sifs); + rt2500usb_register_write(rt2x00dev, MAC_CSR12, erp->eifs); } -static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev, - const int txpower) -{ - u32 rf3; - - rt2x00_rf_read(rt2x00dev, 3, &rf3); - rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower)); - rt2500usb_rf_write(rt2x00dev, 3, rf3); -} - -static void rt2500usb_config_antenna(struct rt2x00_dev *rt2x00dev, - struct antenna_setup *ant) +static void rt2500usb_config_ant(struct rt2x00_dev *rt2x00dev, + struct antenna_setup *ant) { u8 r2; u8 r14; @@ -555,15 +499,52 @@ static void rt2500usb_config_antenna(struct rt2x00_dev *rt2x00dev, rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6); } +static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev, + struct rf_channel *rf, const int txpower) +{ + /* + * Set TXpower. + */ + rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower)); + + /* + * For RT2525E we should first set the channel to half band higher. + */ + if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) { + static const u32 vals[] = { + 0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2, + 0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba, + 0x000008ba, 0x000008be, 0x000008b7, 0x00000902, + 0x00000902, 0x00000906 + }; + + rt2500usb_rf_write(rt2x00dev, 2, vals[rf->channel - 1]); + if (rf->rf4) + rt2500usb_rf_write(rt2x00dev, 4, rf->rf4); + } + + rt2500usb_rf_write(rt2x00dev, 1, rf->rf1); + rt2500usb_rf_write(rt2x00dev, 2, rf->rf2); + rt2500usb_rf_write(rt2x00dev, 3, rf->rf3); + if (rf->rf4) + rt2500usb_rf_write(rt2x00dev, 4, rf->rf4); +} + +static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev, + const int txpower) +{ + u32 rf3; + + rt2x00_rf_read(rt2x00dev, 3, &rf3); + rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower)); + rt2500usb_rf_write(rt2x00dev, 3, rf3); +} + static void rt2500usb_config_duration(struct rt2x00_dev *rt2x00dev, struct rt2x00lib_conf *libconf) { u16 reg; - rt2500usb_register_write(rt2x00dev, MAC_CSR10, libconf->slot_time); - rt2500usb_register_write(rt2x00dev, MAC_CSR11, libconf->sifs); - rt2500usb_register_write(rt2x00dev, MAC_CSR12, libconf->eifs); - rt2500usb_register_read(rt2x00dev, TXRX_CSR18, ®); rt2x00_set_field16(®, TXRX_CSR18_INTERVAL, libconf->conf->beacon_int * 4); @@ -574,17 +555,14 @@ static void rt2500usb_config(struct rt2x00_dev *rt2x00dev, struct rt2x00lib_conf *libconf, const unsigned int flags) { - if (flags & CONFIG_UPDATE_PHYMODE) - rt2500usb_config_phymode(rt2x00dev, libconf->basic_rates); - if (flags & CONFIG_UPDATE_CHANNEL) + if (flags & IEEE80211_CONF_CHANGE_CHANNEL) rt2500usb_config_channel(rt2x00dev, &libconf->rf, libconf->conf->power_level); - if ((flags & CONFIG_UPDATE_TXPOWER) && !(flags & CONFIG_UPDATE_CHANNEL)) + if ((flags & IEEE80211_CONF_CHANGE_POWER) && + !(flags & IEEE80211_CONF_CHANGE_CHANNEL)) rt2500usb_config_txpower(rt2x00dev, libconf->conf->power_level); - if (flags & CONFIG_UPDATE_ANTENNA) - rt2500usb_config_antenna(rt2x00dev, &libconf->ant); - if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT)) + if (flags & IEEE80211_CONF_CHANGE_BEACON_INTERVAL) rt2500usb_config_duration(rt2x00dev, libconf); } @@ -1130,7 +1108,7 @@ static void rt2500usb_write_beacon(struct queue_entry *entry) struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev); struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data; struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); - int pipe = usb_sndbulkpipe(usb_dev, 1); + int pipe = usb_sndbulkpipe(usb_dev, entry->queue->usb_endpoint); int length; u16 reg; @@ -1156,7 +1134,7 @@ static void rt2500usb_write_beacon(struct queue_entry *entry) * length of the data to usb_fill_bulk_urb. Pass the skb * to the driver to determine what the length should be. */ - length = rt2x00dev->ops->lib->get_tx_data_len(rt2x00dev, entry->skb); + length = rt2x00dev->ops->lib->get_tx_data_len(entry); usb_fill_bulk_urb(bcn_priv->urb, usb_dev, pipe, entry->skb->data, length, rt2500usb_beacondone, @@ -1178,8 +1156,7 @@ static void rt2500usb_write_beacon(struct queue_entry *entry) usb_submit_urb(bcn_priv->guardian_urb, GFP_ATOMIC); } -static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev, - struct sk_buff *skb) +static int rt2500usb_get_tx_data_len(struct queue_entry *entry) { int length; @@ -1187,8 +1164,8 @@ static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev, * The length _must_ be a multiple of 2, * but it must _not_ be a multiple of the USB packet size. */ - length = roundup(skb->len, 2); - length += (2 * !(length % rt2x00dev->usb_maxpacket)); + length = roundup(entry->skb->len, 2); + length += (2 * !(length % entry->queue->usb_maxpacket)); return length; } @@ -1319,10 +1296,8 @@ static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev) */ mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0); if (!is_valid_ether_addr(mac)) { - DECLARE_MAC_BUF(macbuf); - random_ether_addr(mac); - EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac)); + EEPROM(rt2x00dev, "MAC: %pM\n", mac); } rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word); @@ -1781,8 +1756,7 @@ static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = { .probe_hw = rt2500usb_probe_hw, .initialize = rt2x00usb_initialize, .uninitialize = rt2x00usb_uninitialize, - .init_rxentry = rt2x00usb_init_rxentry, - .init_txentry = rt2x00usb_init_txentry, + .clear_entry = rt2x00usb_clear_entry, .set_device_state = rt2500usb_set_device_state, .link_stats = rt2500usb_link_stats, .reset_tuner = rt2500usb_reset_tuner, @@ -1796,6 +1770,7 @@ static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = { .config_filter = rt2500usb_config_filter, .config_intf = rt2500usb_config_intf, .config_erp = rt2500usb_config_erp, + .config_ant = rt2500usb_config_ant, .config = rt2500usb_config, }; |