From e174961ca1a0b28f7abf0be47973ad57cb74e5f0 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 27 Oct 2008 15:59:26 -0700 Subject: net: convert print_mac to %pM This converts pretty much everything to print_mac. There were a few things that had conflicts which I have just dropped for now, no harm done. I've built an allyesconfig with this and looked at the files that weren't built very carefully, but it's a huge patch. Signed-off-by: Johannes Berg Signed-off-by: David S. Miller --- drivers/net/wireless/rt2x00/rt61pci.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers/net/wireless/rt2x00/rt61pci.c') diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c index a461620b489f..45f69f83552c 100644 --- a/drivers/net/wireless/rt2x00/rt61pci.c +++ b/drivers/net/wireless/rt2x00/rt61pci.c @@ -2175,10 +2175,8 @@ static int rt61pci_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); -- cgit v1.2.3 From 9124b07740c51cbc6e358dd0c4abc6ee8ded084d Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 14 Oct 2008 19:17:54 +0200 Subject: mac80211: make retry limits part of hw config Instead of having a separate callback, use the HW config callback with a new flag to change retry limits. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt61pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/wireless/rt2x00/rt61pci.c') diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c index 45f69f83552c..08eb896ae36c 100644 --- a/drivers/net/wireless/rt2x00/rt61pci.c +++ b/drivers/net/wireless/rt2x00/rt61pci.c @@ -2724,7 +2724,6 @@ static const struct ieee80211_ops rt61pci_mac80211_ops = { .configure_filter = rt2x00mac_configure_filter, .set_key = rt2x00mac_set_key, .get_stats = rt2x00mac_get_stats, - .set_retry_limit = rt61pci_set_retry_limit, .bss_info_changed = rt2x00mac_bss_info_changed, .conf_tx = rt61pci_conf_tx, .get_tx_stats = rt2x00mac_get_tx_stats, @@ -2757,6 +2756,7 @@ static const struct rt2x00lib_ops rt61pci_rt2x00_ops = { .config_intf = rt61pci_config_intf, .config_erp = rt61pci_config_erp, .config = rt61pci_config, + .set_retry_limit = rt61pci_set_retry_limit, }; static const struct data_queue_desc rt61pci_queue_rx = { -- cgit v1.2.3 From 558875112c28c7b2744a92c9836c256dd57bc5b6 Mon Sep 17 00:00:00 2001 From: John Daiker Date: Fri, 17 Oct 2008 12:16:17 -0700 Subject: rt2x00: reduce checkpatch.pl errors A few changes to reduce checkpatch.pl errors in the rt2x00 driver. For the most part, I only fixed cosmetic things, and left the actual 'code flow' untouched (hopefully)! Diff is against wireless-testing HEAD. Signed-off-by: John Daiker Signed-off-by: Ivo van Doorn Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt61pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/wireless/rt2x00/rt61pci.c') diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c index 08eb896ae36c..921dcd5064de 100644 --- a/drivers/net/wireless/rt2x00/rt61pci.c +++ b/drivers/net/wireless/rt2x00/rt61pci.c @@ -1934,7 +1934,7 @@ static int rt61pci_agc_to_rssi(struct rt2x00_dev *rt2x00dev, int rxd_w1) } static void rt61pci_fill_rxdone(struct queue_entry *entry, - struct rxdone_entry_desc *rxdesc) + struct rxdone_entry_desc *rxdesc) { struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; struct queue_entry_priv_pci *entry_priv = entry->priv_data; -- cgit v1.2.3 From e4ea1c403acece78c271bf9cd6f797d1cb093df9 Mon Sep 17 00:00:00 2001 From: Ivo van Doorn Date: Wed, 29 Oct 2008 17:17:57 +0100 Subject: rt2x00: Optimize configuration handling Implement latest changed from mac80211 configuration handling to optmize configuration handling in rt2x00. * Remove set_retry_limit callback function, handled through config() * Move config_antenna to its own callback function, it isn't handled by mac80211 anymore * Use IEEE80211_CONF_CHANGED_* flags and remove manual checks * Removed deprecated short slot setting through config() and put it in config_erp() through which mac80211 now configures it * Remove config_phymode() and move contents to config_erp() since it only managed the basic rates which is now determined by mac80211 through config_erp(). Signed-off-by: Ivo van Doorn Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt61pci.c | 231 +++++++++++++++++----------------- 1 file changed, 112 insertions(+), 119 deletions(-) (limited to 'drivers/net/wireless/rt2x00/rt61pci.c') diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c index 921dcd5064de..bd4a6e1ec9dd 100644 --- a/drivers/net/wireless/rt2x00/rt61pci.c +++ b/drivers/net/wireless/rt2x00/rt61pci.c @@ -643,95 +643,18 @@ static void rt61pci_config_erp(struct rt2x00_dev *rt2x00dev, rt2x00_set_field32(®, TXRX_CSR4_AUTORESPOND_PREAMBLE, !!erp->short_preamble); rt2x00pci_register_write(rt2x00dev, TXRX_CSR4, reg); -} - - -static void rt61pci_config_lna_gain(struct rt2x00_dev *rt2x00dev, - struct rt2x00lib_conf *libconf) -{ - u16 eeprom; - short lna_gain = 0; - - if (libconf->band == IEEE80211_BAND_2GHZ) { - if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags)) - lna_gain += 14; - - rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &eeprom); - lna_gain -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_BG_1); - } else { - if (test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags)) - lna_gain += 14; - - rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &eeprom); - lna_gain -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_A_1); - } - - rt2x00dev->lna_gain = lna_gain; -} - -static void rt61pci_config_phymode(struct rt2x00_dev *rt2x00dev, - const int basic_rate_mask) -{ - rt2x00pci_register_write(rt2x00dev, TXRX_CSR5, basic_rate_mask); -} - -static void rt61pci_config_channel(struct rt2x00_dev *rt2x00dev, - struct rf_channel *rf, const int txpower) -{ - u8 r3; - u8 r94; - u8 smart; - - rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower)); - rt2x00_set_field32(&rf->rf4, RF4_FREQ_OFFSET, rt2x00dev->freq_offset); - - smart = !(rt2x00_rf(&rt2x00dev->chip, RF5225) || - rt2x00_rf(&rt2x00dev->chip, RF2527)); - - rt61pci_bbp_read(rt2x00dev, 3, &r3); - rt2x00_set_field8(&r3, BBP_R3_SMART_MODE, smart); - rt61pci_bbp_write(rt2x00dev, 3, r3); - - r94 = 6; - if (txpower > MAX_TXPOWER && txpower <= (MAX_TXPOWER + r94)) - r94 += txpower - MAX_TXPOWER; - else if (txpower < MIN_TXPOWER && txpower >= (MIN_TXPOWER - r94)) - r94 += txpower; - rt61pci_bbp_write(rt2x00dev, 94, r94); - - rt61pci_rf_write(rt2x00dev, 1, rf->rf1); - rt61pci_rf_write(rt2x00dev, 2, rf->rf2); - rt61pci_rf_write(rt2x00dev, 3, rf->rf3 & ~0x00000004); - rt61pci_rf_write(rt2x00dev, 4, rf->rf4); - - udelay(200); - - rt61pci_rf_write(rt2x00dev, 1, rf->rf1); - rt61pci_rf_write(rt2x00dev, 2, rf->rf2); - rt61pci_rf_write(rt2x00dev, 3, rf->rf3 | 0x00000004); - rt61pci_rf_write(rt2x00dev, 4, rf->rf4); - - udelay(200); - - rt61pci_rf_write(rt2x00dev, 1, rf->rf1); - rt61pci_rf_write(rt2x00dev, 2, rf->rf2); - rt61pci_rf_write(rt2x00dev, 3, rf->rf3 & ~0x00000004); - rt61pci_rf_write(rt2x00dev, 4, rf->rf4); - - msleep(1); -} -static void rt61pci_config_txpower(struct rt2x00_dev *rt2x00dev, - const int txpower) -{ - struct rf_channel rf; + rt2x00pci_register_write(rt2x00dev, TXRX_CSR5, erp->basic_rates); - rt2x00_rf_read(rt2x00dev, 1, &rf.rf1); - rt2x00_rf_read(rt2x00dev, 2, &rf.rf2); - rt2x00_rf_read(rt2x00dev, 3, &rf.rf3); - rt2x00_rf_read(rt2x00dev, 4, &rf.rf4); + rt2x00pci_register_read(rt2x00dev, MAC_CSR9, ®); + rt2x00_set_field32(®, MAC_CSR9_SLOT_TIME, erp->slot_time); + rt2x00pci_register_write(rt2x00dev, MAC_CSR9, reg); - rt61pci_config_channel(rt2x00dev, &rf, txpower); + rt2x00pci_register_read(rt2x00dev, MAC_CSR8, ®); + rt2x00_set_field32(®, MAC_CSR8_SIFS, erp->sifs); + rt2x00_set_field32(®, MAC_CSR8_SIFS_AFTER_RX_OFDM, 3); + rt2x00_set_field32(®, MAC_CSR8_EIFS, erp->eifs); + rt2x00pci_register_write(rt2x00dev, MAC_CSR8, reg); } static void rt61pci_config_antenna_5x(struct rt2x00_dev *rt2x00dev, @@ -906,8 +829,8 @@ static const struct antenna_sel antenna_sel_bg[] = { { 98, { 0x48, 0x48 } }, }; -static void rt61pci_config_antenna(struct rt2x00_dev *rt2x00dev, - struct antenna_setup *ant) +static void rt61pci_config_ant(struct rt2x00_dev *rt2x00dev, + struct antenna_setup *ant) { const struct antenna_sel *sel; unsigned int lna; @@ -954,20 +877,105 @@ static void rt61pci_config_antenna(struct rt2x00_dev *rt2x00dev, } } -static void rt61pci_config_duration(struct rt2x00_dev *rt2x00dev, +static void rt61pci_config_lna_gain(struct rt2x00_dev *rt2x00dev, + struct rt2x00lib_conf *libconf) +{ + u16 eeprom; + short lna_gain = 0; + + if (libconf->conf->channel->band == IEEE80211_BAND_2GHZ) { + if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags)) + lna_gain += 14; + + rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &eeprom); + lna_gain -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_BG_1); + } else { + if (test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags)) + lna_gain += 14; + + rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &eeprom); + lna_gain -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_A_1); + } + + rt2x00dev->lna_gain = lna_gain; +} + +static void rt61pci_config_channel(struct rt2x00_dev *rt2x00dev, + struct rf_channel *rf, const int txpower) +{ + u8 r3; + u8 r94; + u8 smart; + + rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower)); + rt2x00_set_field32(&rf->rf4, RF4_FREQ_OFFSET, rt2x00dev->freq_offset); + + smart = !(rt2x00_rf(&rt2x00dev->chip, RF5225) || + rt2x00_rf(&rt2x00dev->chip, RF2527)); + + rt61pci_bbp_read(rt2x00dev, 3, &r3); + rt2x00_set_field8(&r3, BBP_R3_SMART_MODE, smart); + rt61pci_bbp_write(rt2x00dev, 3, r3); + + r94 = 6; + if (txpower > MAX_TXPOWER && txpower <= (MAX_TXPOWER + r94)) + r94 += txpower - MAX_TXPOWER; + else if (txpower < MIN_TXPOWER && txpower >= (MIN_TXPOWER - r94)) + r94 += txpower; + rt61pci_bbp_write(rt2x00dev, 94, r94); + + rt61pci_rf_write(rt2x00dev, 1, rf->rf1); + rt61pci_rf_write(rt2x00dev, 2, rf->rf2); + rt61pci_rf_write(rt2x00dev, 3, rf->rf3 & ~0x00000004); + rt61pci_rf_write(rt2x00dev, 4, rf->rf4); + + udelay(200); + + rt61pci_rf_write(rt2x00dev, 1, rf->rf1); + rt61pci_rf_write(rt2x00dev, 2, rf->rf2); + rt61pci_rf_write(rt2x00dev, 3, rf->rf3 | 0x00000004); + rt61pci_rf_write(rt2x00dev, 4, rf->rf4); + + udelay(200); + + rt61pci_rf_write(rt2x00dev, 1, rf->rf1); + rt61pci_rf_write(rt2x00dev, 2, rf->rf2); + rt61pci_rf_write(rt2x00dev, 3, rf->rf3 & ~0x00000004); + rt61pci_rf_write(rt2x00dev, 4, rf->rf4); + + msleep(1); +} + +static void rt61pci_config_txpower(struct rt2x00_dev *rt2x00dev, + const int txpower) +{ + struct rf_channel rf; + + rt2x00_rf_read(rt2x00dev, 1, &rf.rf1); + rt2x00_rf_read(rt2x00dev, 2, &rf.rf2); + rt2x00_rf_read(rt2x00dev, 3, &rf.rf3); + rt2x00_rf_read(rt2x00dev, 4, &rf.rf4); + + rt61pci_config_channel(rt2x00dev, &rf, txpower); +} + +static void rt61pci_config_retry_limit(struct rt2x00_dev *rt2x00dev, struct rt2x00lib_conf *libconf) { u32 reg; - rt2x00pci_register_read(rt2x00dev, MAC_CSR9, ®); - rt2x00_set_field32(®, MAC_CSR9_SLOT_TIME, libconf->slot_time); - rt2x00pci_register_write(rt2x00dev, MAC_CSR9, reg); + rt2x00pci_register_read(rt2x00dev, TXRX_CSR4, ®); + rt2x00_set_field32(®, TXRX_CSR4_LONG_RETRY_LIMIT, + libconf->conf->long_frame_max_tx_count); + rt2x00_set_field32(®, TXRX_CSR4_SHORT_RETRY_LIMIT, + libconf->conf->short_frame_max_tx_count); + rt2x00pci_register_write(rt2x00dev, TXRX_CSR4, reg); +} - rt2x00pci_register_read(rt2x00dev, MAC_CSR8, ®); - rt2x00_set_field32(®, MAC_CSR8_SIFS, libconf->sifs); - rt2x00_set_field32(®, MAC_CSR8_SIFS_AFTER_RX_OFDM, 3); - rt2x00_set_field32(®, MAC_CSR8_EIFS, libconf->eifs); - rt2x00pci_register_write(rt2x00dev, MAC_CSR8, reg); +static void rt61pci_config_duration(struct rt2x00_dev *rt2x00dev, + struct rt2x00lib_conf *libconf) +{ + u32 reg; rt2x00pci_register_read(rt2x00dev, TXRX_CSR0, ®); rt2x00_set_field32(®, TXRX_CSR0_TSF_OFFSET, IEEE80211_HEADER); @@ -990,16 +998,15 @@ static void rt61pci_config(struct rt2x00_dev *rt2x00dev, /* Always recalculate LNA gain before changing configuration */ rt61pci_config_lna_gain(rt2x00dev, libconf); - if (flags & CONFIG_UPDATE_PHYMODE) - rt61pci_config_phymode(rt2x00dev, libconf->basic_rates); - if (flags & CONFIG_UPDATE_CHANNEL) + if (flags & IEEE80211_CONF_CHANGE_CHANNEL) rt61pci_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)) rt61pci_config_txpower(rt2x00dev, libconf->conf->power_level); - if (flags & CONFIG_UPDATE_ANTENNA) - rt61pci_config_antenna(rt2x00dev, &libconf->ant); - if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT)) + if (flags & IEEE80211_CONF_CHANGE_RETRY_LIMITS) + rt61pci_config_retry_limit(rt2x00dev, libconf); + if (flags & IEEE80211_CONF_CHANGE_BEACON_INTERVAL) rt61pci_config_duration(rt2x00dev, libconf); } @@ -2628,20 +2635,6 @@ static int rt61pci_probe_hw(struct rt2x00_dev *rt2x00dev) /* * IEEE80211 stack callback functions. */ -static int rt61pci_set_retry_limit(struct ieee80211_hw *hw, - u32 short_retry, u32 long_retry) -{ - struct rt2x00_dev *rt2x00dev = hw->priv; - u32 reg; - - rt2x00pci_register_read(rt2x00dev, TXRX_CSR4, ®); - rt2x00_set_field32(®, TXRX_CSR4_LONG_RETRY_LIMIT, long_retry); - rt2x00_set_field32(®, TXRX_CSR4_SHORT_RETRY_LIMIT, short_retry); - rt2x00pci_register_write(rt2x00dev, TXRX_CSR4, reg); - - return 0; -} - static int rt61pci_conf_tx(struct ieee80211_hw *hw, u16 queue_idx, const struct ieee80211_tx_queue_params *params) { @@ -2755,8 +2748,8 @@ static const struct rt2x00lib_ops rt61pci_rt2x00_ops = { .config_filter = rt61pci_config_filter, .config_intf = rt61pci_config_intf, .config_erp = rt61pci_config_erp, + .config_ant = rt61pci_config_ant, .config = rt61pci_config, - .set_retry_limit = rt61pci_set_retry_limit, }; static const struct data_queue_desc rt61pci_queue_rx = { -- cgit v1.2.3 From 743b97caf98036ec8ee4bfc6fc6f85ad94e04783 Mon Sep 17 00:00:00 2001 From: Ivo van Doorn Date: Wed, 29 Oct 2008 19:41:03 +0100 Subject: rt2x00: Remove debugfs CSR access wrappers Move calculation of CSR register offset into rt2x00debug.c and remove the wrapper functions from each individual driver. (Except rt2500usb, which still needs to wrap for the different value type argument). Signed-off-by: Ivo van Doorn Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt61pci.c | 23 +++++++---------------- 1 file changed, 7 insertions(+), 16 deletions(-) (limited to 'drivers/net/wireless/rt2x00/rt61pci.c') diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c index bd4a6e1ec9dd..3f272793412a 100644 --- a/drivers/net/wireless/rt2x00/rt61pci.c +++ b/drivers/net/wireless/rt2x00/rt61pci.c @@ -228,43 +228,34 @@ static void rt61pci_eepromregister_write(struct eeprom_93cx6 *eeprom) } #ifdef CONFIG_RT2X00_LIB_DEBUGFS -#define CSR_OFFSET(__word) ( CSR_REG_BASE + ((__word) * sizeof(u32)) ) - -static void rt61pci_read_csr(struct rt2x00_dev *rt2x00dev, - const unsigned int word, u32 *data) -{ - rt2x00pci_register_read(rt2x00dev, CSR_OFFSET(word), data); -} - -static void rt61pci_write_csr(struct rt2x00_dev *rt2x00dev, - const unsigned int word, u32 data) -{ - rt2x00pci_register_write(rt2x00dev, CSR_OFFSET(word), data); -} - static const struct rt2x00debug rt61pci_rt2x00debug = { .owner = THIS_MODULE, .csr = { - .read = rt61pci_read_csr, - .write = rt61pci_write_csr, + .read = rt2x00pci_register_read, + .write = rt2x00pci_register_write, + .flags = RT2X00DEBUGFS_OFFSET, + .word_base = CSR_REG_BASE, .word_size = sizeof(u32), .word_count = CSR_REG_SIZE / sizeof(u32), }, .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 = rt61pci_bbp_read, .write = rt61pci_bbp_write, + .word_base = BBP_BASE, .word_size = sizeof(u8), .word_count = BBP_SIZE / sizeof(u8), }, .rf = { .read = rt2x00_rf_read, .write = rt61pci_rf_write, + .word_base = RF_BASE, .word_size = sizeof(u32), .word_count = RF_SIZE / sizeof(u32), }, -- cgit v1.2.3 From 798b7adb4ed3533ab1282f51d16892034cfd8aae Mon Sep 17 00:00:00 2001 From: Ivo van Doorn Date: Sat, 8 Nov 2008 15:25:33 +0100 Subject: rt2x00: Cleanup TX/RX entry handling Merge the callback functions init_txentry() and init_rxentry(). This makes life in rt2x00lib a lot simpler and we can cleanup several functions. rt2x00pci contained "fake" FIELD definitions for descriptor words. This is not flexible since it assumes the driver will always have the same field to indicate if a driver is available or not. This should be dependent on the driver, and we should add a callback function for this. Signed-off-by: Ivo van Doorn Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt61pci.c | 47 +++++++++++++++++++++-------------- 1 file changed, 29 insertions(+), 18 deletions(-) (limited to 'drivers/net/wireless/rt2x00/rt61pci.c') diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c index 3f272793412a..abfe33b5712a 100644 --- a/drivers/net/wireless/rt2x00/rt61pci.c +++ b/drivers/net/wireless/rt2x00/rt61pci.c @@ -1261,33 +1261,44 @@ static int rt61pci_load_firmware(struct rt2x00_dev *rt2x00dev, const void *data, /* * Initialization functions. */ -static void rt61pci_init_rxentry(struct rt2x00_dev *rt2x00dev, - struct queue_entry *entry) +static bool rt61pci_get_entry_state(struct queue_entry *entry) { struct queue_entry_priv_pci *entry_priv = entry->priv_data; - struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); u32 word; - rt2x00_desc_read(entry_priv->desc, 5, &word); - rt2x00_set_field32(&word, RXD_W5_BUFFER_PHYSICAL_ADDRESS, - skbdesc->skb_dma); - rt2x00_desc_write(entry_priv->desc, 5, word); + if (entry->queue->qid == QID_RX) { + rt2x00_desc_read(entry_priv->desc, 0, &word); - rt2x00_desc_read(entry_priv->desc, 0, &word); - rt2x00_set_field32(&word, RXD_W0_OWNER_NIC, 1); - rt2x00_desc_write(entry_priv->desc, 0, word); + return rt2x00_get_field32(word, RXD_W0_OWNER_NIC); + } else { + rt2x00_desc_read(entry_priv->desc, 0, &word); + + return (rt2x00_get_field32(word, TXD_W0_OWNER_NIC) || + rt2x00_get_field32(word, TXD_W0_VALID)); + } } -static void rt61pci_init_txentry(struct rt2x00_dev *rt2x00dev, - struct queue_entry *entry) +static void rt61pci_clear_entry(struct queue_entry *entry) { struct queue_entry_priv_pci *entry_priv = entry->priv_data; + struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); u32 word; - rt2x00_desc_read(entry_priv->desc, 0, &word); - rt2x00_set_field32(&word, TXD_W0_VALID, 0); - rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 0); - rt2x00_desc_write(entry_priv->desc, 0, word); + if (entry->queue->qid == QID_RX) { + rt2x00_desc_read(entry_priv->desc, 5, &word); + rt2x00_set_field32(&word, RXD_W5_BUFFER_PHYSICAL_ADDRESS, + skbdesc->skb_dma); + rt2x00_desc_write(entry_priv->desc, 5, word); + + rt2x00_desc_read(entry_priv->desc, 0, &word); + rt2x00_set_field32(&word, RXD_W0_OWNER_NIC, 1); + rt2x00_desc_write(entry_priv->desc, 0, word); + } else { + rt2x00_desc_read(entry_priv->desc, 0, &word); + rt2x00_set_field32(&word, TXD_W0_VALID, 0); + rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 0); + rt2x00_desc_write(entry_priv->desc, 0, word); + } } static int rt61pci_init_queues(struct rt2x00_dev *rt2x00dev) @@ -2722,8 +2733,8 @@ static const struct rt2x00lib_ops rt61pci_rt2x00_ops = { .load_firmware = rt61pci_load_firmware, .initialize = rt2x00pci_initialize, .uninitialize = rt2x00pci_uninitialize, - .init_rxentry = rt61pci_init_rxentry, - .init_txentry = rt61pci_init_txentry, + .get_entry_state = rt61pci_get_entry_state, + .clear_entry = rt61pci_clear_entry, .set_device_state = rt61pci_set_device_state, .rfkill_poll = rt61pci_rfkill_poll, .link_stats = rt61pci_link_stats, -- cgit v1.2.3 From 8ff48a8bbe4a1ba29dea2836dfce74660f97c1be Mon Sep 17 00:00:00 2001 From: Ivo van Doorn Date: Sun, 9 Nov 2008 23:40:46 +0100 Subject: rt2x00: Fix race condition when using inderect registers Indirect registers require multiple calls to the CSR register in order to access the indirect registers. This must be protected under a lock to prevent race conditions which could cause invalid data to be returned when reading from the indirect register or silent failures when writing data to the indirect register. USB drivers where already protected under a mutex, so rename the mutex and make PCI drivers use the mutex as well. This now means that BBP and RF registers are no longer accessible in interrupt context. That is not a bad situation since the slow behavior of accessing those registers means we don't _want_ to access them in interrupt context either. Signed-off-by: Ivo van Doorn Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt61pci.c | 66 +++++++++++++++++++++++++---------- 1 file changed, 47 insertions(+), 19 deletions(-) (limited to 'drivers/net/wireless/rt2x00/rt61pci.c') diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c index abfe33b5712a..89ac34fbadf2 100644 --- a/drivers/net/wireless/rt2x00/rt61pci.c +++ b/drivers/net/wireless/rt2x00/rt61pci.c @@ -75,14 +75,14 @@ static void rt61pci_bbp_write(struct rt2x00_dev *rt2x00dev, { u32 reg; + mutex_lock(&rt2x00dev->csr_mutex); + /* * Wait until the BBP becomes ready. */ reg = rt61pci_bbp_check(rt2x00dev); - if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) { - ERROR(rt2x00dev, "PHY_CSR3 register busy. Write failed.\n"); - return; - } + if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) + goto exit_fail; /* * Write the data into the BBP. @@ -94,6 +94,14 @@ static void rt61pci_bbp_write(struct rt2x00_dev *rt2x00dev, rt2x00_set_field32(®, PHY_CSR3_READ_CONTROL, 0); rt2x00pci_register_write(rt2x00dev, PHY_CSR3, reg); + mutex_unlock(&rt2x00dev->csr_mutex); + + return; + +exit_fail: + mutex_unlock(&rt2x00dev->csr_mutex); + + ERROR(rt2x00dev, "PHY_CSR3 register busy. Write failed.\n"); } static void rt61pci_bbp_read(struct rt2x00_dev *rt2x00dev, @@ -101,14 +109,14 @@ static void rt61pci_bbp_read(struct rt2x00_dev *rt2x00dev, { u32 reg; + mutex_lock(&rt2x00dev->csr_mutex); + /* * Wait until the BBP becomes ready. */ reg = rt61pci_bbp_check(rt2x00dev); - if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) { - ERROR(rt2x00dev, "PHY_CSR3 register busy. Read failed.\n"); - return; - } + if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) + goto exit_fail; /* * Write the request into the BBP. @@ -124,13 +132,19 @@ static void rt61pci_bbp_read(struct rt2x00_dev *rt2x00dev, * Wait until the BBP becomes ready. */ reg = rt61pci_bbp_check(rt2x00dev); - if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) { - ERROR(rt2x00dev, "PHY_CSR3 register busy. Read failed.\n"); - *value = 0xff; - return; - } + if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) + goto exit_fail; *value = rt2x00_get_field32(reg, PHY_CSR3_VALUE); + mutex_unlock(&rt2x00dev->csr_mutex); + + return; + +exit_fail: + mutex_unlock(&rt2x00dev->csr_mutex); + + ERROR(rt2x00dev, "PHY_CSR3 register busy. Read failed.\n"); + *value = 0xff; } static void rt61pci_rf_write(struct rt2x00_dev *rt2x00dev, @@ -142,6 +156,8 @@ static void rt61pci_rf_write(struct rt2x00_dev *rt2x00dev, if (!word) return; + mutex_lock(&rt2x00dev->csr_mutex); + for (i = 0; i < REGISTER_BUSY_COUNT; i++) { rt2x00pci_register_read(rt2x00dev, PHY_CSR4, ®); if (!rt2x00_get_field32(reg, PHY_CSR4_BUSY)) @@ -149,6 +165,7 @@ static void rt61pci_rf_write(struct rt2x00_dev *rt2x00dev, udelay(REGISTER_BUSY_DELAY); } + mutex_unlock(&rt2x00dev->csr_mutex); ERROR(rt2x00dev, "PHY_CSR4 register busy. Write failed.\n"); return; @@ -161,6 +178,8 @@ rf_write: rt2x00pci_register_write(rt2x00dev, PHY_CSR4, reg); rt2x00_rf_write(rt2x00dev, word, value); + + mutex_unlock(&rt2x00dev->csr_mutex); } #ifdef CONFIG_RT2X00_LIB_LEDS @@ -175,14 +194,12 @@ static void rt61pci_mcu_request(struct rt2x00_dev *rt2x00dev, { u32 reg; + mutex_lock(&rt2x00dev->csr_mutex); + rt2x00pci_register_read(rt2x00dev, H2M_MAILBOX_CSR, ®); - if (rt2x00_get_field32(reg, H2M_MAILBOX_CSR_OWNER)) { - ERROR(rt2x00dev, "mcu request error. " - "Request 0x%02x failed for token 0x%02x.\n", - command, token); - return; - } + if (rt2x00_get_field32(reg, H2M_MAILBOX_CSR_OWNER)) + goto exit_fail; rt2x00_set_field32(®, H2M_MAILBOX_CSR_OWNER, 1); rt2x00_set_field32(®, H2M_MAILBOX_CSR_CMD_TOKEN, token); @@ -194,6 +211,17 @@ static void rt61pci_mcu_request(struct rt2x00_dev *rt2x00dev, rt2x00_set_field32(®, HOST_CMD_CSR_HOST_COMMAND, command); rt2x00_set_field32(®, HOST_CMD_CSR_INTERRUPT_MCU, 1); rt2x00pci_register_write(rt2x00dev, HOST_CMD_CSR, reg); + + mutex_unlock(&rt2x00dev->csr_mutex); + + return; + +exit_fail: + mutex_unlock(&rt2x00dev->csr_mutex); + + ERROR(rt2x00dev, + "mcu request error. Request 0x%02x failed for token 0x%02x.\n", + command, token); } #endif /* CONFIG_RT2X00_LIB_LEDS */ -- cgit v1.2.3 From c9c3b1a5deac4297503145840fffcd122b253db5 Mon Sep 17 00:00:00 2001 From: Ivo van Doorn Date: Mon, 10 Nov 2008 19:41:40 +0100 Subject: rt2x00: Cleanup indirect register access All code which accessed indirect registers was similar in respect to the for-loop, the given timeout, etc. Move it into a seperate function, which for PCI drivers can be moved into rt2x00pci. This allows us to cleanup the cleanup the code further by removing the goto statementsand making the codepath look a bit nicer. Signed-off-by: Ivo van Doorn Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt61pci.c | 161 +++++++++++++--------------------- 1 file changed, 59 insertions(+), 102 deletions(-) (limited to 'drivers/net/wireless/rt2x00/rt61pci.c') diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c index 89ac34fbadf2..d54443c25fe3 100644 --- a/drivers/net/wireless/rt2x00/rt61pci.c +++ b/drivers/net/wireless/rt2x00/rt61pci.c @@ -55,20 +55,13 @@ MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); * the access attempt is considered to have failed, * and we will print an error. */ -static u32 rt61pci_bbp_check(struct rt2x00_dev *rt2x00dev) -{ - u32 reg; - unsigned int i; - - for (i = 0; i < REGISTER_BUSY_COUNT; i++) { - rt2x00pci_register_read(rt2x00dev, PHY_CSR3, ®); - if (!rt2x00_get_field32(reg, PHY_CSR3_BUSY)) - break; - udelay(REGISTER_BUSY_DELAY); - } - - return reg; -} +#define WAIT_FOR_BBP(__dev, __reg) \ + rt2x00pci_regbusy_read((__dev), PHY_CSR3, PHY_CSR3_BUSY, (__reg)) +#define WAIT_FOR_RF(__dev, __reg) \ + rt2x00pci_regbusy_read((__dev), PHY_CSR4, PHY_CSR4_BUSY, (__reg)) +#define WAIT_FOR_MCU(__dev, __reg) \ + rt2x00pci_regbusy_read((__dev), H2M_MAILBOX_CSR, \ + H2M_MAILBOX_CSR_OWNER, (__reg)) static void rt61pci_bbp_write(struct rt2x00_dev *rt2x00dev, const unsigned int word, const u8 value) @@ -78,30 +71,20 @@ static void rt61pci_bbp_write(struct rt2x00_dev *rt2x00dev, mutex_lock(&rt2x00dev->csr_mutex); /* - * Wait until the BBP becomes ready. - */ - reg = rt61pci_bbp_check(rt2x00dev); - if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) - goto exit_fail; - - /* - * Write the data into the BBP. + * Wait until the BBP becomes available, afterwards we + * can safely write the new data into the register. */ - reg = 0; - rt2x00_set_field32(®, PHY_CSR3_VALUE, value); - rt2x00_set_field32(®, PHY_CSR3_REGNUM, word); - rt2x00_set_field32(®, PHY_CSR3_BUSY, 1); - rt2x00_set_field32(®, PHY_CSR3_READ_CONTROL, 0); - - rt2x00pci_register_write(rt2x00dev, PHY_CSR3, reg); - mutex_unlock(&rt2x00dev->csr_mutex); + if (WAIT_FOR_BBP(rt2x00dev, ®)) { + reg = 0; + rt2x00_set_field32(®, PHY_CSR3_VALUE, value); + rt2x00_set_field32(®, PHY_CSR3_REGNUM, word); + rt2x00_set_field32(®, PHY_CSR3_BUSY, 1); + rt2x00_set_field32(®, PHY_CSR3_READ_CONTROL, 0); - return; + rt2x00pci_register_write(rt2x00dev, PHY_CSR3, reg); + } -exit_fail: mutex_unlock(&rt2x00dev->csr_mutex); - - ERROR(rt2x00dev, "PHY_CSR3 register busy. Write failed.\n"); } static void rt61pci_bbp_read(struct rt2x00_dev *rt2x00dev, @@ -112,72 +95,53 @@ static void rt61pci_bbp_read(struct rt2x00_dev *rt2x00dev, mutex_lock(&rt2x00dev->csr_mutex); /* - * Wait until the BBP becomes ready. + * 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 = rt61pci_bbp_check(rt2x00dev); - if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) - goto exit_fail; + if (WAIT_FOR_BBP(rt2x00dev, ®)) { + reg = 0; + rt2x00_set_field32(®, PHY_CSR3_REGNUM, word); + rt2x00_set_field32(®, PHY_CSR3_BUSY, 1); + rt2x00_set_field32(®, PHY_CSR3_READ_CONTROL, 1); - /* - * Write the request into the BBP. - */ - reg = 0; - rt2x00_set_field32(®, PHY_CSR3_REGNUM, word); - rt2x00_set_field32(®, PHY_CSR3_BUSY, 1); - rt2x00_set_field32(®, PHY_CSR3_READ_CONTROL, 1); + rt2x00pci_register_write(rt2x00dev, PHY_CSR3, reg); - rt2x00pci_register_write(rt2x00dev, PHY_CSR3, reg); - - /* - * Wait until the BBP becomes ready. - */ - reg = rt61pci_bbp_check(rt2x00dev); - if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) - goto exit_fail; + WAIT_FOR_BBP(rt2x00dev, ®); + } *value = rt2x00_get_field32(reg, PHY_CSR3_VALUE); - mutex_unlock(&rt2x00dev->csr_mutex); - - return; -exit_fail: mutex_unlock(&rt2x00dev->csr_mutex); - - ERROR(rt2x00dev, "PHY_CSR3 register busy. Read failed.\n"); - *value = 0xff; } static void rt61pci_rf_write(struct rt2x00_dev *rt2x00dev, const unsigned int word, const u32 value) { u32 reg; - unsigned int i; if (!word) return; mutex_lock(&rt2x00dev->csr_mutex); - for (i = 0; i < REGISTER_BUSY_COUNT; i++) { - rt2x00pci_register_read(rt2x00dev, PHY_CSR4, ®); - if (!rt2x00_get_field32(reg, PHY_CSR4_BUSY)) - goto rf_write; - udelay(REGISTER_BUSY_DELAY); - } - - mutex_unlock(&rt2x00dev->csr_mutex); - ERROR(rt2x00dev, "PHY_CSR4 register busy. Write failed.\n"); - return; - -rf_write: - reg = 0; - rt2x00_set_field32(®, PHY_CSR4_VALUE, value); - rt2x00_set_field32(®, PHY_CSR4_NUMBER_OF_BITS, 21); - rt2x00_set_field32(®, PHY_CSR4_IF_SELECT, 0); - rt2x00_set_field32(®, PHY_CSR4_BUSY, 1); + /* + * 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_field32(®, PHY_CSR4_VALUE, value); + rt2x00_set_field32(®, PHY_CSR4_NUMBER_OF_BITS, 21); + rt2x00_set_field32(®, PHY_CSR4_IF_SELECT, 0); + rt2x00_set_field32(®, PHY_CSR4_BUSY, 1); - rt2x00pci_register_write(rt2x00dev, PHY_CSR4, reg); - rt2x00_rf_write(rt2x00dev, word, value); + rt2x00pci_register_write(rt2x00dev, PHY_CSR4, reg); + rt2x00_rf_write(rt2x00dev, word, value); + } mutex_unlock(&rt2x00dev->csr_mutex); } @@ -196,32 +160,25 @@ static void rt61pci_mcu_request(struct rt2x00_dev *rt2x00dev, mutex_lock(&rt2x00dev->csr_mutex); - rt2x00pci_register_read(rt2x00dev, H2M_MAILBOX_CSR, ®); - - if (rt2x00_get_field32(reg, H2M_MAILBOX_CSR_OWNER)) - goto exit_fail; - - rt2x00_set_field32(®, H2M_MAILBOX_CSR_OWNER, 1); - rt2x00_set_field32(®, H2M_MAILBOX_CSR_CMD_TOKEN, token); - rt2x00_set_field32(®, H2M_MAILBOX_CSR_ARG0, arg0); - rt2x00_set_field32(®, H2M_MAILBOX_CSR_ARG1, arg1); - rt2x00pci_register_write(rt2x00dev, H2M_MAILBOX_CSR, reg); - - rt2x00pci_register_read(rt2x00dev, HOST_CMD_CSR, ®); - rt2x00_set_field32(®, HOST_CMD_CSR_HOST_COMMAND, command); - rt2x00_set_field32(®, HOST_CMD_CSR_INTERRUPT_MCU, 1); - rt2x00pci_register_write(rt2x00dev, HOST_CMD_CSR, reg); - - mutex_unlock(&rt2x00dev->csr_mutex); + /* + * Wait until the MCU becomes available, afterwards we + * can safely write the new data into the register. + */ + if (WAIT_FOR_MCU(rt2x00dev, ®)) { + rt2x00_set_field32(®, H2M_MAILBOX_CSR_OWNER, 1); + rt2x00_set_field32(®, H2M_MAILBOX_CSR_CMD_TOKEN, token); + rt2x00_set_field32(®, H2M_MAILBOX_CSR_ARG0, arg0); + rt2x00_set_field32(®, H2M_MAILBOX_CSR_ARG1, arg1); + rt2x00pci_register_write(rt2x00dev, H2M_MAILBOX_CSR, reg); - return; + rt2x00pci_register_read(rt2x00dev, HOST_CMD_CSR, ®); + rt2x00_set_field32(®, HOST_CMD_CSR_HOST_COMMAND, command); + rt2x00_set_field32(®, HOST_CMD_CSR_INTERRUPT_MCU, 1); + rt2x00pci_register_write(rt2x00dev, HOST_CMD_CSR, reg); + } -exit_fail: mutex_unlock(&rt2x00dev->csr_mutex); - ERROR(rt2x00dev, - "mcu request error. Request 0x%02x failed for token 0x%02x.\n", - command, token); } #endif /* CONFIG_RT2X00_LIB_LEDS */ -- cgit v1.2.3 From 1ce9cdac482f0dfbbd22ba4b3e5c016a05543a42 Mon Sep 17 00:00:00 2001 From: Ivo van Doorn Date: Tue, 2 Dec 2008 18:19:48 +0100 Subject: rt2x00: Optimize IV/EIV handling IV and EIV belong to eachother and don't require 2 seperate fields. Instead they can logically be merged into a single array with size 2. With this approach we can simplify the code in rt2x00crypto.c by using a single memcpy() when copying the iv/eiv data. Additionally we can move some code out of if-statements because the if-statement would always be true. Signed-off-by: Ivo van Doorn Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt61pci.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/net/wireless/rt2x00/rt61pci.c') diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c index d54443c25fe3..c1ebb658b6c4 100644 --- a/drivers/net/wireless/rt2x00/rt61pci.c +++ b/drivers/net/wireless/rt2x00/rt61pci.c @@ -1778,8 +1778,8 @@ static void rt61pci_write_tx_desc(struct rt2x00_dev *rt2x00dev, rt2x00_desc_write(txd, 2, word); if (test_bit(ENTRY_TXD_ENCRYPT, &txdesc->flags)) { - _rt2x00_desc_write(txd, 3, skbdesc->iv); - _rt2x00_desc_write(txd, 4, skbdesc->eiv); + _rt2x00_desc_write(txd, 3, skbdesc->iv[0]); + _rt2x00_desc_write(txd, 4, skbdesc->iv[1]); } rt2x00_desc_read(txd, 5, &word); @@ -1949,8 +1949,8 @@ static void rt61pci_fill_rxdone(struct queue_entry *entry, } if (rxdesc->cipher != CIPHER_NONE) { - _rt2x00_desc_read(entry_priv->desc, 2, &rxdesc->iv); - _rt2x00_desc_read(entry_priv->desc, 3, &rxdesc->eiv); + _rt2x00_desc_read(entry_priv->desc, 2, &rxdesc->iv[0]); + _rt2x00_desc_read(entry_priv->desc, 3, &rxdesc->iv[1]); _rt2x00_desc_read(entry_priv->desc, 4, &rxdesc->icv); /* -- cgit v1.2.3 From 74415edb042ef9f3b1291f978763687f35aadbb3 Mon Sep 17 00:00:00 2001 From: Ivo van Doorn Date: Tue, 2 Dec 2008 22:50:33 +0100 Subject: rt2x00: Add RXDONE_CRYPTO_IV/ICV flags Drivers should notify rt2x00lib when they provide the IV/ICV data. This adds some flexibility to drivers which can't provide all information. * rt2500usb provides ICV inside the frame * rt2800pci doesn't provide IV/ICV * rt2800usb doesn't provide IV/ICV Signed-off-by: Ivo van Doorn Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt61pci.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/net/wireless/rt2x00/rt61pci.c') diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c index c1ebb658b6c4..987e89009f74 100644 --- a/drivers/net/wireless/rt2x00/rt61pci.c +++ b/drivers/net/wireless/rt2x00/rt61pci.c @@ -1951,7 +1951,10 @@ static void rt61pci_fill_rxdone(struct queue_entry *entry, if (rxdesc->cipher != CIPHER_NONE) { _rt2x00_desc_read(entry_priv->desc, 2, &rxdesc->iv[0]); _rt2x00_desc_read(entry_priv->desc, 3, &rxdesc->iv[1]); + rxdesc->dev_flags |= RXDONE_CRYPTO_IV; + _rt2x00_desc_read(entry_priv->desc, 4, &rxdesc->icv); + rxdesc->dev_flags |= RXDONE_CRYPTO_ICV; /* * Hardware has stripped IV/EIV data from 802.11 frame during -- cgit v1.2.3