From 58a7ce64426394a46e80cdc9440cc1e7c195e85d Mon Sep 17 00:00:00 2001 From: Krzysztof Halasa Date: Thu, 30 Mar 2006 17:01:53 +0200 Subject: [PATCH] Goramo PCI200SYN WAN driver subsystem ID patch Goramo finally got PCI subsystem ID for their PCI200SYN card. The attached patch adds support for it - cards with old EEPROM data will emit a warning with URL for update tool. Signed-off-by: Krzysztof Halasa Signed-off-by: Jeff Garzik --- include/linux/pci_ids.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 870fe38378b1..6a1ef8b635c5 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -930,6 +930,7 @@ #define PCI_DEVICE_ID_PLX_DJINN_ITOO 0x1151 #define PCI_DEVICE_ID_PLX_R753 0x1152 #define PCI_DEVICE_ID_PLX_OLITEC 0x1187 +#define PCI_DEVICE_ID_PLX_PCI200SYN 0x3196 #define PCI_DEVICE_ID_PLX_9050 0x9050 #define PCI_DEVICE_ID_PLX_9080 0x9080 #define PCI_DEVICE_ID_PLX_GTEK_SERIAL2 0xa001 -- cgit v1.2.3-71-gd317 From ea2841521a7e061b772d6cee03f5b23c58a58284 Mon Sep 17 00:00:00 2001 From: Zhu Yi Date: Thu, 13 Apr 2006 17:17:06 +0800 Subject: [PATCH] ieee80211: Fix TKIP MIC calculation for QoS frames Fix TKIP MIC verification failure when receiving QoS frames from AP. Signed-off-by: Hong Liu Signed-off-by: Zhu Yi Signed-off-by: John W. Linville --- include/net/ieee80211.h | 3 +++ net/ieee80211/ieee80211_crypt_tkip.c | 11 ++++++++++- 2 files changed, 13 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/net/ieee80211.h b/include/net/ieee80211.h index 4725ff861c57..66dc136588a9 100644 --- a/include/net/ieee80211.h +++ b/include/net/ieee80211.h @@ -104,6 +104,9 @@ #define IEEE80211_SCTL_FRAG 0x000F #define IEEE80211_SCTL_SEQ 0xFFF0 +/* QOS control */ +#define IEEE80211_QCTL_TID 0x000F + /* debug macros */ #ifdef CONFIG_IEEE80211_DEBUG diff --git a/net/ieee80211/ieee80211_crypt_tkip.c b/net/ieee80211/ieee80211_crypt_tkip.c index 93def94c1b32..3fa5df2e1f0b 100644 --- a/net/ieee80211/ieee80211_crypt_tkip.c +++ b/net/ieee80211/ieee80211_crypt_tkip.c @@ -501,8 +501,11 @@ static int michael_mic(struct ieee80211_tkip_data *tkey, u8 * key, u8 * hdr, static void michael_mic_hdr(struct sk_buff *skb, u8 * hdr) { struct ieee80211_hdr_4addr *hdr11; + u16 stype; hdr11 = (struct ieee80211_hdr_4addr *)skb->data; + stype = WLAN_FC_GET_STYPE(le16_to_cpu(hdr11->frame_ctl)); + switch (le16_to_cpu(hdr11->frame_ctl) & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) { case IEEE80211_FCTL_TODS: @@ -523,7 +526,13 @@ static void michael_mic_hdr(struct sk_buff *skb, u8 * hdr) break; } - hdr[12] = 0; /* priority */ + if (stype & IEEE80211_STYPE_QOS_DATA) { + const struct ieee80211_hdr_3addrqos *qoshdr = + (struct ieee80211_hdr_3addrqos *)skb->data; + hdr[12] = le16_to_cpu(qoshdr->qos_ctl) & IEEE80211_QCTL_TID; + } else + hdr[12] = 0; /* priority */ + hdr[13] = hdr[14] = hdr[15] = 0; /* reserved */ } -- cgit v1.2.3-71-gd317 From 73858062b66c07d71bce47a0e4798dd3ce604590 Mon Sep 17 00:00:00 2001 From: Zhu Yi Date: Thu, 13 Apr 2006 17:17:17 +0800 Subject: [PATCH] ieee80211: Fix TX code doesn't enable QoS when using WPA + QoS Fix ieee80211 TX code when using WPA+QOS. TKIP/CCMP will use the TID field of qos_ctl in 802.11 frame header to do encryption. We cannot ignore this field when doing host encryption and add the qos_ctl field later. Signed-off-by: Hong Liu Signed-off-by: Zhu Yi Signed-off-by: John W. Linville --- include/net/ieee80211.h | 1 + net/ieee80211/ieee80211_tx.c | 63 +++++++++++++++++++++++++++++++++++--------- 2 files changed, 52 insertions(+), 12 deletions(-) (limited to 'include') diff --git a/include/net/ieee80211.h b/include/net/ieee80211.h index 66dc136588a9..bc6bdd62c150 100644 --- a/include/net/ieee80211.h +++ b/include/net/ieee80211.h @@ -1076,6 +1076,7 @@ struct ieee80211_device { int (*handle_management) (struct net_device * dev, struct ieee80211_network * network, u16 type); + int (*is_qos_active) (struct net_device *dev, struct sk_buff *skb); /* Typical STA methods */ int (*handle_auth) (struct net_device * dev, diff --git a/net/ieee80211/ieee80211_tx.c b/net/ieee80211/ieee80211_tx.c index 8b4332f53394..233d527c6953 100644 --- a/net/ieee80211/ieee80211_tx.c +++ b/net/ieee80211/ieee80211_tx.c @@ -220,13 +220,43 @@ static struct ieee80211_txb *ieee80211_alloc_txb(int nr_frags, int txb_size, return txb; } +static int ieee80211_classify(struct sk_buff *skb) +{ + struct ethhdr *eth; + struct iphdr *ip; + + eth = (struct ethhdr *)skb->data; + if (eth->h_proto != __constant_htons(ETH_P_IP)) + return 0; + + ip = skb->nh.iph; + switch (ip->tos & 0xfc) { + case 0x20: + return 2; + case 0x40: + return 1; + case 0x60: + return 3; + case 0x80: + return 4; + case 0xa0: + return 5; + case 0xc0: + return 6; + case 0xe0: + return 7; + default: + return 0; + } +} + /* Incoming skb is converted to a txb which consists of * a block of 802.11 fragment packets (stored as skbs) */ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) { struct ieee80211_device *ieee = netdev_priv(dev); struct ieee80211_txb *txb = NULL; - struct ieee80211_hdr_3addr *frag_hdr; + struct ieee80211_hdr_3addrqos *frag_hdr; int i, bytes_per_frag, nr_frags, bytes_last_frag, frag_size, rts_required; unsigned long flags; @@ -234,9 +264,10 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) int ether_type, encrypt, host_encrypt, host_encrypt_msdu, host_build_iv; int bytes, fc, hdr_len; struct sk_buff *skb_frag; - struct ieee80211_hdr_3addr header = { /* Ensure zero initialized */ + struct ieee80211_hdr_3addrqos header = {/* Ensure zero initialized */ .duration_id = 0, - .seq_ctl = 0 + .seq_ctl = 0, + .qos_ctl = 0 }; u8 dest[ETH_ALEN], src[ETH_ALEN]; struct ieee80211_crypt_data *crypt; @@ -282,12 +313,6 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) memcpy(dest, skb->data, ETH_ALEN); memcpy(src, skb->data + ETH_ALEN, ETH_ALEN); - /* Advance the SKB to the start of the payload */ - skb_pull(skb, sizeof(struct ethhdr)); - - /* Determine total amount of storage required for TXB packets */ - bytes = skb->len + SNAP_SIZE + sizeof(u16); - if (host_encrypt || host_build_iv) fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA | IEEE80211_FCTL_PROTECTED; @@ -306,9 +331,23 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) memcpy(header.addr2, src, ETH_ALEN); memcpy(header.addr3, ieee->bssid, ETH_ALEN); } - header.frame_ctl = cpu_to_le16(fc); hdr_len = IEEE80211_3ADDR_LEN; + if (ieee->is_qos_active && ieee->is_qos_active(dev, skb)) { + fc |= IEEE80211_STYPE_QOS_DATA; + hdr_len += 2; + + skb->priority = ieee80211_classify(skb); + header.qos_ctl |= skb->priority & IEEE80211_QCTL_TID; + } + header.frame_ctl = cpu_to_le16(fc); + + /* Advance the SKB to the start of the payload */ + skb_pull(skb, sizeof(struct ethhdr)); + + /* Determine total amount of storage required for TXB packets */ + bytes = skb->len + SNAP_SIZE + sizeof(u16); + /* Encrypt msdu first on the whole data packet. */ if ((host_encrypt || host_encrypt_msdu) && crypt && crypt->ops && crypt->ops->encrypt_msdu) { @@ -402,7 +441,7 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) if (rts_required) { skb_frag = txb->fragments[0]; frag_hdr = - (struct ieee80211_hdr_3addr *)skb_put(skb_frag, hdr_len); + (struct ieee80211_hdr_3addrqos *)skb_put(skb_frag, hdr_len); /* * Set header frame_ctl to the RTS. @@ -433,7 +472,7 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) crypt->ops->extra_mpdu_prefix_len); frag_hdr = - (struct ieee80211_hdr_3addr *)skb_put(skb_frag, hdr_len); + (struct ieee80211_hdr_3addrqos *)skb_put(skb_frag, hdr_len); memcpy(frag_hdr, &header, hdr_len); /* If this is not the last fragment, then add the MOREFRAGS -- cgit v1.2.3-71-gd317 From 45a62ab3d6f9d5963cb7c01fa76c950e42d037c2 Mon Sep 17 00:00:00 2001 From: Zhu Yi Date: Thu, 13 Apr 2006 17:17:54 +0800 Subject: [PATCH] ieee80211: update version stamp to 1.1.13 Signed-off-by: Zhu Yi Signed-off-by: John W. Linville --- include/net/ieee80211.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/net/ieee80211.h b/include/net/ieee80211.h index bc6bdd62c150..4087dfc47094 100644 --- a/include/net/ieee80211.h +++ b/include/net/ieee80211.h @@ -29,7 +29,7 @@ #include /* ARRAY_SIZE */ #include -#define IEEE80211_VERSION "git-1.1.7" +#define IEEE80211_VERSION "git-1.1.13" #define IEEE80211_DATA_LEN 2304 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section -- cgit v1.2.3-71-gd317 From 9a1771e86756212041b32d80b850cc4c8063360a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 20 Apr 2006 20:02:02 +0200 Subject: [PATCH] softmac: add SIOCSIWMLME This patch adds the SIOCSIWMLME wext to softmac, this functionality appears to be used by wpa_supplicant and is softmac-specific. Signed-off-by: Johannes Berg Cc: Jouni Malinen Signed-off-by: John W. Linville --- include/net/ieee80211softmac_wx.h | 5 ++++ net/ieee80211/softmac/ieee80211softmac_assoc.c | 2 +- net/ieee80211/softmac/ieee80211softmac_priv.h | 1 + net/ieee80211/softmac/ieee80211softmac_wx.c | 32 ++++++++++++++++++++++++++ 4 files changed, 39 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/net/ieee80211softmac_wx.h b/include/net/ieee80211softmac_wx.h index 3e0be453ecea..4ee3ad57283f 100644 --- a/include/net/ieee80211softmac_wx.h +++ b/include/net/ieee80211softmac_wx.h @@ -91,4 +91,9 @@ ieee80211softmac_wx_get_genie(struct net_device *dev, struct iw_request_info *info, union iwreq_data *wrqu, char *extra); +extern int +ieee80211softmac_wx_set_mlme(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra); #endif /* _IEEE80211SOFTMAC_WX */ diff --git a/net/ieee80211/softmac/ieee80211softmac_assoc.c b/net/ieee80211/softmac/ieee80211softmac_assoc.c index fb79ce7d6439..ea9f5aacce85 100644 --- a/net/ieee80211/softmac/ieee80211softmac_assoc.c +++ b/net/ieee80211/softmac/ieee80211softmac_assoc.c @@ -82,7 +82,7 @@ ieee80211softmac_assoc_timeout(void *d) } /* Sends out a disassociation request to the desired AP */ -static void +void ieee80211softmac_disassoc(struct ieee80211softmac_device *mac, u16 reason) { unsigned long flags; diff --git a/net/ieee80211/softmac/ieee80211softmac_priv.h b/net/ieee80211/softmac/ieee80211softmac_priv.h index 65d9816c8ecc..8c95b3abe0cc 100644 --- a/net/ieee80211/softmac/ieee80211softmac_priv.h +++ b/net/ieee80211/softmac/ieee80211softmac_priv.h @@ -150,6 +150,7 @@ int ieee80211softmac_handle_disassoc(struct net_device * dev, int ieee80211softmac_handle_reassoc_req(struct net_device * dev, struct ieee80211_reassoc_request * reassoc); void ieee80211softmac_assoc_timeout(void *d); +void ieee80211softmac_disassoc(struct ieee80211softmac_device *mac, u16 reason); /* some helper functions */ static inline int ieee80211softmac_scan_handlers_check_self(struct ieee80211softmac_device *sm) diff --git a/net/ieee80211/softmac/ieee80211softmac_wx.c b/net/ieee80211/softmac/ieee80211softmac_wx.c index 27edb2b5581a..8d0c22641ca8 100644 --- a/net/ieee80211/softmac/ieee80211softmac_wx.c +++ b/net/ieee80211/softmac/ieee80211softmac_wx.c @@ -431,3 +431,35 @@ ieee80211softmac_wx_get_genie(struct net_device *dev, } EXPORT_SYMBOL_GPL(ieee80211softmac_wx_get_genie); +int +ieee80211softmac_wx_set_mlme(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + struct ieee80211softmac_device *mac = ieee80211_priv(dev); + struct iw_mlme *mlme = (struct iw_mlme *)extra; + u16 reason = cpu_to_le16(mlme->reason_code); + struct ieee80211softmac_network *net; + + if (memcmp(mac->associnfo.bssid, mlme->addr.sa_data, ETH_ALEN)) { + printk(KERN_DEBUG PFX "wx_set_mlme: requested operation on net we don't use\n"); + return -EINVAL; + } + + switch (mlme->cmd) { + case IW_MLME_DEAUTH: + net = ieee80211softmac_get_network_by_bssid_locked(mac, mlme->addr.sa_data); + if (!net) { + printk(KERN_DEBUG PFX "wx_set_mlme: we should know the net here...\n"); + return -EINVAL; + } + return ieee80211softmac_deauth_req(mac, net, reason); + case IW_MLME_DISASSOC: + ieee80211softmac_disassoc(mac, reason); + return 0; + default: + return -EOPNOTSUPP; + } +} +EXPORT_SYMBOL_GPL(ieee80211softmac_wx_set_mlme); -- cgit v1.2.3-71-gd317 From 8462fe3cd9ec8951871a20a4dfe36321ab075964 Mon Sep 17 00:00:00 2001 From: Daniel Drake Date: Mon, 1 May 2006 22:45:50 +0100 Subject: [PATCH] softmac: suggest per-frame-type TX rate This patch is the first step towards rate control inside softmac. The txrates substructure has been extended to provide different fields for different types of packets (management/data, unicast/multicast). These fields are updated on association to values compatible with the access point we are associating to. Drivers can then use the new ieee80211softmac_suggest_txrate() function call when deciding which rate to transmit each frame at. This is immensely useful for ZD1211, and bcm can use it too. The user can still specify a rate through iwconfig, which is matched for all transmissions (assuming the rate they have specified is in the rate set required by the AP). At a later date, we can incorporate automatic rate management into the ieee80211softmac_recalc_txrates() function. This patch also removes the mcast_fallback field. Sam Leffler pointed out that this field is meaningless, because no driver will ever be retransmitting mcast frames (they are not acked). Signed-off-by: Daniel Drake Acked-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/ieee80211softmac.h | 38 +++++++- net/ieee80211/softmac/ieee80211softmac_assoc.c | 19 ++-- net/ieee80211/softmac/ieee80211softmac_module.c | 117 +++++++++++++++++++----- net/ieee80211/softmac/ieee80211softmac_priv.h | 3 + net/ieee80211/softmac/ieee80211softmac_wx.c | 4 +- 5 files changed, 141 insertions(+), 40 deletions(-) (limited to 'include') diff --git a/include/net/ieee80211softmac.h b/include/net/ieee80211softmac.h index 052ed596a4e4..703463a8828b 100644 --- a/include/net/ieee80211softmac.h +++ b/include/net/ieee80211softmac.h @@ -86,6 +86,9 @@ struct ieee80211softmac_assoc_info { /* BSSID we're trying to associate to */ char bssid[ETH_ALEN]; + + /* Rates supported by the network */ + struct ieee80211softmac_ratesinfo supported_rates; /* some flags. * static_essid is valid if the essid is constant, @@ -132,23 +135,26 @@ enum { struct ieee80211softmac_txrates { /* The Bit-Rate to be used for multicast frames. */ u8 mcast_rate; - /* The Bit-Rate to be used for multicast fallback - * (If the device supports fallback and hardware-retry) - */ - u8 mcast_fallback; + + /* The Bit-Rate to be used for multicast management frames. */ + u8 mgt_mcast_rate; + /* The Bit-Rate to be used for any other (normal) data packet. */ u8 default_rate; /* The Bit-Rate to be used for default fallback * (If the device supports fallback and hardware-retry) */ u8 default_fallback; + + /* This is the rate that the user asked for */ + u8 user_rate; }; /* Bits for txrates_change callback. */ #define IEEE80211SOFTMAC_TXRATECHG_DEFAULT (1 << 0) /* default_rate */ #define IEEE80211SOFTMAC_TXRATECHG_DEFAULT_FBACK (1 << 1) /* default_fallback */ #define IEEE80211SOFTMAC_TXRATECHG_MCAST (1 << 2) /* mcast_rate */ -#define IEEE80211SOFTMAC_TXRATECHG_MCAST_FBACK (1 << 3) /* mcast_fallback */ +#define IEEE80211SOFTMAC_TXRATECHG_MGT_MCAST (1 << 3) /* mgt_mcast_rate */ struct ieee80211softmac_device { /* 802.11 structure for data stuff */ @@ -250,6 +256,28 @@ extern void ieee80211softmac_fragment_lost(struct net_device *dev, * Note that the rates need to be sorted. */ extern void ieee80211softmac_set_rates(struct net_device *dev, u8 count, u8 *rates); +/* Helper function which advises you the rate at which a frame should be + * transmitted at. */ +static inline u8 ieee80211softmac_suggest_txrate(struct ieee80211softmac_device *mac, + int is_multicast, + int is_mgt) +{ + struct ieee80211softmac_txrates *txrates = &mac->txrates; + + if (!mac->associated) + return txrates->mgt_mcast_rate; + + /* We are associated, sending unicast frame */ + if (!is_multicast) + return txrates->default_rate; + + /* We are associated, sending multicast frame */ + if (is_mgt) + return txrates->mgt_mcast_rate; + else + return txrates->mcast_rate; +} + /* Start the SoftMAC. Call this after you initialized the device * and it is ready to run. */ diff --git a/net/ieee80211/softmac/ieee80211softmac_assoc.c b/net/ieee80211/softmac/ieee80211softmac_assoc.c index 01f21334767c..5d90b9a6ee50 100644 --- a/net/ieee80211/softmac/ieee80211softmac_assoc.c +++ b/net/ieee80211/softmac/ieee80211softmac_assoc.c @@ -96,6 +96,7 @@ ieee80211softmac_disassoc(struct ieee80211softmac_device *mac) mac->associated = 0; mac->associnfo.bssvalid = 0; mac->associnfo.associating = 0; + ieee80211softmac_init_txrates(mac); ieee80211softmac_call_events_locked(mac, IEEE80211SOFTMAC_EVENT_DISASSOCIATED, NULL); spin_unlock_irqrestore(&mac->lock, flags); } @@ -118,24 +119,15 @@ ieee80211softmac_send_disassoc_req(struct ieee80211softmac_device *mac, u16 reas static inline int we_support_all_basic_rates(struct ieee80211softmac_device *mac, u8 *from, u8 from_len) { - int idx, search, found; - u8 rate, search_rate; + int idx; + u8 rate; for (idx = 0; idx < (from_len); idx++) { rate = (from)[idx]; if (!(rate & IEEE80211_BASIC_RATE_MASK)) continue; - found = 0; rate &= ~IEEE80211_BASIC_RATE_MASK; - for (search = 0; search < mac->ratesinfo.count; search++) { - search_rate = mac->ratesinfo.rates[search]; - search_rate &= ~IEEE80211_BASIC_RATE_MASK; - if (rate == search_rate) { - found = 1; - break; - } - } - if (!found) + if (!ieee80211softmac_ratesinfo_rate_supported(&mac->ratesinfo, rate)) return 0; } return 1; @@ -310,6 +302,9 @@ ieee80211softmac_associated(struct ieee80211softmac_device *mac, struct ieee80211softmac_network *net) { mac->associnfo.associating = 0; + mac->associnfo.supported_rates = net->supported_rates; + ieee80211softmac_recalc_txrates(mac); + mac->associated = 1; if (mac->set_bssid_filter) mac->set_bssid_filter(mac->dev, net->bssid); diff --git a/net/ieee80211/softmac/ieee80211softmac_module.c b/net/ieee80211/softmac/ieee80211softmac_module.c index 6252be2c0db9..4b2e57d12418 100644 --- a/net/ieee80211/softmac/ieee80211softmac_module.c +++ b/net/ieee80211/softmac/ieee80211softmac_module.c @@ -26,6 +26,7 @@ #include "ieee80211softmac_priv.h" #include +#include struct net_device *alloc_ieee80211softmac(int sizeof_priv) { @@ -61,14 +62,6 @@ struct net_device *alloc_ieee80211softmac(int sizeof_priv) softmac->wait_for_scan = ieee80211softmac_wait_for_scan_implementation; softmac->stop_scan = ieee80211softmac_stop_scan_implementation; - //TODO: The mcast rate has to be assigned dynamically somewhere (in scanning, association. Not sure...) - // It has to be set to the highest rate all stations in the current network can handle. - softmac->txrates.mcast_rate = IEEE80211_CCK_RATE_1MB; - softmac->txrates.mcast_fallback = IEEE80211_CCK_RATE_1MB; - /* This is reassigned in ieee80211softmac_start to sane values. */ - softmac->txrates.default_rate = IEEE80211_CCK_RATE_1MB; - softmac->txrates.default_fallback = IEEE80211_CCK_RATE_1MB; - /* to start with, we can't send anything ... */ netif_carrier_off(dev); @@ -170,15 +163,82 @@ static void ieee80211softmac_start_check_rates(struct ieee80211softmac_device *m } } -void ieee80211softmac_start(struct net_device *dev) +int ieee80211softmac_ratesinfo_rate_supported(struct ieee80211softmac_ratesinfo *ri, u8 rate) +{ + int search; + u8 search_rate; + + for (search = 0; search < ri->count; search++) { + search_rate = ri->rates[search]; + search_rate &= ~IEEE80211_BASIC_RATE_MASK; + if (rate == search_rate) + return 1; + } + + return 0; +} + +/* Finds the highest rate which is: + * 1. Present in ri (optionally a basic rate) + * 2. Supported by the device + * 3. Less than or equal to the user-defined rate + */ +static u8 highest_supported_rate(struct ieee80211softmac_device *mac, + struct ieee80211softmac_ratesinfo *ri, int basic_only) +{ + u8 user_rate = mac->txrates.user_rate; + int i; + + if (ri->count == 0) { + dprintk(KERN_ERR PFX "empty ratesinfo?\n"); + return IEEE80211_CCK_RATE_1MB; + } + + for (i = ri->count - 1; i >= 0; i--) { + u8 rate = ri->rates[i]; + if (basic_only && !(rate & IEEE80211_BASIC_RATE_MASK)) + continue; + rate &= ~IEEE80211_BASIC_RATE_MASK; + if (rate > user_rate) + continue; + if (ieee80211softmac_ratesinfo_rate_supported(&mac->ratesinfo, rate)) + return rate; + } + + /* If we haven't found a suitable rate by now, just trust the user */ + return user_rate; +} + +void ieee80211softmac_recalc_txrates(struct ieee80211softmac_device *mac) +{ + struct ieee80211softmac_txrates *txrates = &mac->txrates; + struct ieee80211softmac_txrates oldrates; + u32 change = 0; + + if (mac->txrates_change) + oldrates = mac->txrates; + + change |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT; + txrates->default_rate = highest_supported_rate(mac, &mac->associnfo.supported_rates, 0); + + change |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT_FBACK; + txrates->default_fallback = lower_rate(mac, txrates->default_rate); + + change |= IEEE80211SOFTMAC_TXRATECHG_MCAST; + txrates->mcast_rate = highest_supported_rate(mac, &mac->associnfo.supported_rates, 1); + + if (mac->txrates_change) + mac->txrates_change(mac->dev, change, &oldrates); + +} + +void ieee80211softmac_init_txrates(struct ieee80211softmac_device *mac) { - struct ieee80211softmac_device *mac = ieee80211_priv(dev); struct ieee80211_device *ieee = mac->ieee; u32 change = 0; + struct ieee80211softmac_txrates *txrates = &mac->txrates; struct ieee80211softmac_txrates oldrates; - ieee80211softmac_start_check_rates(mac); - /* TODO: We need some kind of state machine to lower the default rates * if we loose too many packets. */ @@ -193,22 +253,37 @@ void ieee80211softmac_start(struct net_device *dev) more reliable. Note similar logic in ieee80211softmac_wx_set_rate() */ if (ieee->modulation & IEEE80211_CCK_MODULATION) { - mac->txrates.default_rate = IEEE80211_CCK_RATE_11MB; - change |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT; - mac->txrates.default_fallback = IEEE80211_CCK_RATE_5MB; - change |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT_FBACK; + txrates->user_rate = IEEE80211_CCK_RATE_11MB; } else if (ieee->modulation & IEEE80211_OFDM_MODULATION) { - mac->txrates.default_rate = IEEE80211_OFDM_RATE_54MB; - change |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT; - mac->txrates.default_fallback = IEEE80211_OFDM_RATE_24MB; - change |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT_FBACK; + txrates->user_rate = IEEE80211_OFDM_RATE_54MB; } else assert(0); + + txrates->default_rate = IEEE80211_CCK_RATE_1MB; + change |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT; + + txrates->default_fallback = IEEE80211_CCK_RATE_1MB; + change |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT_FBACK; + + txrates->mcast_rate = IEEE80211_CCK_RATE_1MB; + change |= IEEE80211SOFTMAC_TXRATECHG_MCAST; + + txrates->mgt_mcast_rate = IEEE80211_CCK_RATE_1MB; + change |= IEEE80211SOFTMAC_TXRATECHG_MGT_MCAST; + if (mac->txrates_change) - mac->txrates_change(dev, change, &oldrates); + mac->txrates_change(mac->dev, change, &oldrates); mac->running = 1; } + +void ieee80211softmac_start(struct net_device *dev) +{ + struct ieee80211softmac_device *mac = ieee80211_priv(dev); + + ieee80211softmac_start_check_rates(mac); + ieee80211softmac_init_txrates(mac); +} EXPORT_SYMBOL_GPL(ieee80211softmac_start); void ieee80211softmac_stop(struct net_device *dev) diff --git a/net/ieee80211/softmac/ieee80211softmac_priv.h b/net/ieee80211/softmac/ieee80211softmac_priv.h index 5de0abf157e3..fa1f8e3acfc0 100644 --- a/net/ieee80211/softmac/ieee80211softmac_priv.h +++ b/net/ieee80211/softmac/ieee80211softmac_priv.h @@ -116,7 +116,10 @@ ieee80211softmac_get_network_by_essid(struct ieee80211softmac_device *mac, struct ieee80211softmac_essid *essid); /* Rates related */ +int ieee80211softmac_ratesinfo_rate_supported(struct ieee80211softmac_ratesinfo *ri, u8 rate); u8 ieee80211softmac_lower_rate_delta(struct ieee80211softmac_device *mac, u8 rate, int delta); +void ieee80211softmac_init_txrates(struct ieee80211softmac_device *mac); +void ieee80211softmac_recalc_txrates(struct ieee80211softmac_device *mac); static inline u8 lower_rate(struct ieee80211softmac_device *mac, u8 rate) { return ieee80211softmac_lower_rate_delta(mac, rate, 1); } diff --git a/net/ieee80211/softmac/ieee80211softmac_wx.c b/net/ieee80211/softmac/ieee80211softmac_wx.c index b7d83cd4d56c..22aa6199185b 100644 --- a/net/ieee80211/softmac/ieee80211softmac_wx.c +++ b/net/ieee80211/softmac/ieee80211softmac_wx.c @@ -211,8 +211,8 @@ ieee80211softmac_wx_set_rate(struct net_device *net_dev, if (is_ofdm && !(ieee->modulation & IEEE80211_OFDM_MODULATION)) goto out_unlock; - mac->txrates.default_rate = rate; - mac->txrates.default_fallback = lower_rate(mac, rate); + mac->txrates.user_rate = rate; + ieee80211softmac_recalc_txrates(mac); err = 0; out_unlock: -- cgit v1.2.3-71-gd317 From 3a720d726a6aa0a7cd9190f694587adf7bafdf4f Mon Sep 17 00:00:00 2001 From: Brice Goglin Date: Tue, 23 May 2006 06:10:01 -0400 Subject: [PATCH] Revive pci_find_ext_capability This patch revives pci_find_ext_capability (has been disabled a couple month ago since it was not used anywhere. See http://lkml.org/lkml/2006/1/20/247). It will now be used by the myri10ge driver. Signed-off-by: Brice Goglin Signed-off-by: Andrew J. Gallatin drivers/pci/pci.c | 3 +-- include/linux/pci.h | 2 ++ 2 files changed, 3 insertions(+), 2 deletions(-) Signed-off-by: Jeff Garzik --- drivers/pci/pci.c | 3 +-- include/linux/pci.h | 2 ++ 2 files changed, 3 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 2329f941a0dc..8d107c6c2c70 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -164,7 +164,6 @@ int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap) return __pci_bus_find_cap(bus, devfn, hdr_type & 0x7f, cap); } -#if 0 /** * pci_find_ext_capability - Find an extended capability * @dev: PCI device to query @@ -212,7 +211,7 @@ int pci_find_ext_capability(struct pci_dev *dev, int cap) return 0; } -#endif /* 0 */ +EXPORT_SYMBOL_GPL(pci_find_ext_capability); /** * pci_find_parent_resource - return resource region of parent bus of given region diff --git a/include/linux/pci.h b/include/linux/pci.h index 3a6a4e37a482..6fd36cb09160 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -442,6 +442,7 @@ struct pci_dev *pci_find_device_reverse (unsigned int vendor, unsigned int devic struct pci_dev *pci_find_slot (unsigned int bus, unsigned int devfn); int pci_find_capability (struct pci_dev *dev, int cap); int pci_find_next_capability (struct pci_dev *dev, u8 pos, int cap); +int pci_find_ext_capability (struct pci_dev *dev, int cap); struct pci_bus * pci_find_next_bus(const struct pci_bus *from); struct pci_dev *pci_get_device (unsigned int vendor, unsigned int device, struct pci_dev *from); @@ -662,6 +663,7 @@ static inline int pci_register_driver(struct pci_driver *drv) { return 0;} static inline void pci_unregister_driver(struct pci_driver *drv) { } static inline int pci_find_capability (struct pci_dev *dev, int cap) {return 0; } static inline int pci_find_next_capability (struct pci_dev *dev, u8 post, int cap) { return 0; } +static inline int pci_find_ext_capability (struct pci_dev *dev, int cap) {return 0; } static inline const struct pci_device_id *pci_match_device(const struct pci_device_id *ids, const struct pci_dev *dev) { return NULL; } /* Power management related routines */ -- cgit v1.2.3-71-gd317 From 0da34b6dfe55810ae60db57e08e2af8a808c0a55 Mon Sep 17 00:00:00 2001 From: Brice Goglin Date: Tue, 23 May 2006 06:10:15 -0400 Subject: [PATCH] Add Myri-10G Ethernet driver Signed-off-by: Brice Goglin Signed-off-by: Andrew J. Gallatin drivers/net/Kconfig | 17 drivers/net/Makefile | 1 drivers/net/myri10ge/Makefile | 5 drivers/net/myri10ge/myri10ge.c | 2851 +++++++++++++++ drivers/net/myri10ge/myri10ge_mcp.h | 205 + drivers/net/myri10ge/myri10ge_mcp_gen_header.h | 58 include/linux/pci_ids.h | 1 7 files changed, 3138 insertions(+) Signed-off-by: Jeff Garzik --- drivers/net/Kconfig | 17 + drivers/net/Makefile | 1 + drivers/net/myri10ge/Makefile | 5 + drivers/net/myri10ge/myri10ge.c | 2851 ++++++++++++++++++++++++ drivers/net/myri10ge/myri10ge_mcp.h | 205 ++ drivers/net/myri10ge/myri10ge_mcp_gen_header.h | 58 + include/linux/pci_ids.h | 1 + 7 files changed, 3138 insertions(+) create mode 100644 drivers/net/myri10ge/Makefile create mode 100644 drivers/net/myri10ge/myri10ge.c create mode 100644 drivers/net/myri10ge/myri10ge_mcp.h create mode 100644 drivers/net/myri10ge/myri10ge_mcp_gen_header.h (limited to 'include') diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index 68bc073b8b31..f499a3bc629f 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -2327,6 +2327,23 @@ config S2IO_NAPI If in doubt, say N. +config MYRI10GE + tristate "Myricom Myri-10G Ethernet support" + depends on PCI + select FW_LOADER + select CRC32 + ---help--- + This driver supports Myricom Myri-10G Dual Protocol interface in + Ethernet mode. If the eeprom on your board is not recent enough, + you will need a newer firmware image. + You may get this image or more information, at: + + + + To compile this driver as a module, choose M here and read + . The module + will be called myri10ge. + endmenu source "drivers/net/tokenring/Kconfig" diff --git a/drivers/net/Makefile b/drivers/net/Makefile index b01cc9a3cb10..1eced3287507 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -192,6 +192,7 @@ obj-$(CONFIG_R8169) += r8169.o obj-$(CONFIG_AMD8111_ETH) += amd8111e.o obj-$(CONFIG_IBMVETH) += ibmveth.o obj-$(CONFIG_S2IO) += s2io.o +obj-$(CONFIG_MYRI10GE) += myri10ge/ obj-$(CONFIG_SMC91X) += smc91x.o obj-$(CONFIG_SMC911X) += smc911x.o obj-$(CONFIG_DM9000) += dm9000.o diff --git a/drivers/net/myri10ge/Makefile b/drivers/net/myri10ge/Makefile new file mode 100644 index 000000000000..5df891647aee --- /dev/null +++ b/drivers/net/myri10ge/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for the Myricom Myri-10G ethernet driver +# + +obj-$(CONFIG_MYRI10GE) += myri10ge.o diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c new file mode 100644 index 000000000000..87933cba7e22 --- /dev/null +++ b/drivers/net/myri10ge/myri10ge.c @@ -0,0 +1,2851 @@ +/************************************************************************* + * myri10ge.c: Myricom Myri-10G Ethernet driver. + * + * Copyright (C) 2005, 2006 Myricom, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Myricom, Inc. nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * + * If the eeprom on your board is not recent enough, you will need to get a + * newer firmware image at: + * http://www.myri.com/scs/download-Myri10GE.html + * + * Contact Information: + * + * Myricom, Inc., 325N Santa Anita Avenue, Arcadia, CA 91006 + *************************************************************************/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#ifdef CONFIG_MTRR +#include +#endif + +#include "myri10ge_mcp.h" +#include "myri10ge_mcp_gen_header.h" + +#define MYRI10GE_VERSION_STR "0.9.0" + +MODULE_DESCRIPTION("Myricom 10G driver (10GbE)"); +MODULE_AUTHOR("Maintainer: help@myri.com"); +MODULE_VERSION(MYRI10GE_VERSION_STR); +MODULE_LICENSE("Dual BSD/GPL"); + +#define MYRI10GE_MAX_ETHER_MTU 9014 + +#define MYRI10GE_ETH_STOPPED 0 +#define MYRI10GE_ETH_STOPPING 1 +#define MYRI10GE_ETH_STARTING 2 +#define MYRI10GE_ETH_RUNNING 3 +#define MYRI10GE_ETH_OPEN_FAILED 4 + +#define MYRI10GE_EEPROM_STRINGS_SIZE 256 +#define MYRI10GE_MAX_SEND_DESC_TSO ((65536 / 2048) * 2) + +#define MYRI10GE_NO_CONFIRM_DATA 0xffffffff +#define MYRI10GE_NO_RESPONSE_RESULT 0xffffffff + +struct myri10ge_rx_buffer_state { + struct sk_buff *skb; + DECLARE_PCI_UNMAP_ADDR(bus) + DECLARE_PCI_UNMAP_LEN(len) +}; + +struct myri10ge_tx_buffer_state { + struct sk_buff *skb; + int last; + DECLARE_PCI_UNMAP_ADDR(bus) + DECLARE_PCI_UNMAP_LEN(len) +}; + +struct myri10ge_cmd { + u32 data0; + u32 data1; + u32 data2; +}; + +struct myri10ge_rx_buf { + struct mcp_kreq_ether_recv __iomem *lanai; /* lanai ptr for recv ring */ + u8 __iomem *wc_fifo; /* w/c rx dma addr fifo address */ + struct mcp_kreq_ether_recv *shadow; /* host shadow of recv ring */ + struct myri10ge_rx_buffer_state *info; + int cnt; + int alloc_fail; + int mask; /* number of rx slots -1 */ +}; + +struct myri10ge_tx_buf { + struct mcp_kreq_ether_send __iomem *lanai; /* lanai ptr for sendq */ + u8 __iomem *wc_fifo; /* w/c send fifo address */ + struct mcp_kreq_ether_send *req_list; /* host shadow of sendq */ + char *req_bytes; + struct myri10ge_tx_buffer_state *info; + int mask; /* number of transmit slots -1 */ + int boundary; /* boundary transmits cannot cross */ + int req ____cacheline_aligned; /* transmit slots submitted */ + int pkt_start; /* packets started */ + int done ____cacheline_aligned; /* transmit slots completed */ + int pkt_done; /* packets completed */ +}; + +struct myri10ge_rx_done { + struct mcp_slot *entry; + dma_addr_t bus; + int cnt; + int idx; +}; + +struct myri10ge_priv { + int running; /* running? */ + int csum_flag; /* rx_csums? */ + struct myri10ge_tx_buf tx; /* transmit ring */ + struct myri10ge_rx_buf rx_small; + struct myri10ge_rx_buf rx_big; + struct myri10ge_rx_done rx_done; + int small_bytes; + struct net_device *dev; + struct net_device_stats stats; + u8 __iomem *sram; + int sram_size; + unsigned long board_span; + unsigned long iomem_base; + u32 __iomem *irq_claim; + u32 __iomem *irq_deassert; + char *mac_addr_string; + struct mcp_cmd_response *cmd; + dma_addr_t cmd_bus; + struct mcp_irq_data *fw_stats; + dma_addr_t fw_stats_bus; + struct pci_dev *pdev; + int msi_enabled; + unsigned int link_state; + unsigned int rdma_tags_available; + int intr_coal_delay; + u32 __iomem *intr_coal_delay_ptr; + int mtrr; + int wake_queue; + int stop_queue; + int down_cnt; + wait_queue_head_t down_wq; + struct work_struct watchdog_work; + struct timer_list watchdog_timer; + int watchdog_tx_done; + int watchdog_resets; + int tx_linearized; + int pause; + char *fw_name; + char eeprom_strings[MYRI10GE_EEPROM_STRINGS_SIZE]; + char fw_version[128]; + u8 mac_addr[6]; /* eeprom mac address */ + unsigned long serial_number; + int vendor_specific_offset; + u32 devctl; + u16 msi_flags; + u32 pm_state[16]; + u32 read_dma; + u32 write_dma; + u32 read_write_dma; +}; + +static char *myri10ge_fw_unaligned = "myri10ge_ethp_z8e.dat"; +static char *myri10ge_fw_aligned = "myri10ge_eth_z8e.dat"; + +static char *myri10ge_fw_name = NULL; +module_param(myri10ge_fw_name, charp, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(myri10ge_fw_name, "Firmware image name\n"); + +static int myri10ge_ecrc_enable = 1; +module_param(myri10ge_ecrc_enable, int, S_IRUGO); +MODULE_PARM_DESC(myri10ge_ecrc_enable, "Enable Extended CRC on PCI-E\n"); + +static int myri10ge_max_intr_slots = 1024; +module_param(myri10ge_max_intr_slots, int, S_IRUGO); +MODULE_PARM_DESC(myri10ge_max_intr_slots, "Interrupt queue slots\n"); + +static int myri10ge_small_bytes = -1; /* -1 == auto */ +module_param(myri10ge_small_bytes, int, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(myri10ge_small_bytes, "Threshold of small packets\n"); + +static int myri10ge_msi = 1; /* enable msi by default */ +module_param(myri10ge_msi, int, S_IRUGO); +MODULE_PARM_DESC(myri10ge_msi, "Enable Message Signalled Interrupts\n"); + +static int myri10ge_intr_coal_delay = 25; +module_param(myri10ge_intr_coal_delay, int, S_IRUGO); +MODULE_PARM_DESC(myri10ge_intr_coal_delay, "Interrupt coalescing delay\n"); + +static int myri10ge_flow_control = 1; +module_param(myri10ge_flow_control, int, S_IRUGO); +MODULE_PARM_DESC(myri10ge_flow_control, "Pause parameter\n"); + +static int myri10ge_deassert_wait = 1; +module_param(myri10ge_deassert_wait, int, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(myri10ge_deassert_wait, + "Wait when deasserting legacy interrupts\n"); + +static int myri10ge_force_firmware = 0; +module_param(myri10ge_force_firmware, int, S_IRUGO); +MODULE_PARM_DESC(myri10ge_force_firmware, + "Force firmware to assume aligned completions\n"); + +static int myri10ge_skb_cross_4k = 0; +module_param(myri10ge_skb_cross_4k, int, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(myri10ge_skb_cross_4k, + "Can a small skb cross a 4KB boundary?\n"); + +static int myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN; +module_param(myri10ge_initial_mtu, int, S_IRUGO); +MODULE_PARM_DESC(myri10ge_initial_mtu, "Initial MTU\n"); + +static int myri10ge_napi_weight = 64; +module_param(myri10ge_napi_weight, int, S_IRUGO); +MODULE_PARM_DESC(myri10ge_napi_weight, "Set NAPI weight\n"); + +static int myri10ge_watchdog_timeout = 1; +module_param(myri10ge_watchdog_timeout, int, S_IRUGO); +MODULE_PARM_DESC(myri10ge_watchdog_timeout, "Set watchdog timeout\n"); + +static int myri10ge_max_irq_loops = 1048576; +module_param(myri10ge_max_irq_loops, int, S_IRUGO); +MODULE_PARM_DESC(myri10ge_max_irq_loops, + "Set stuck legacy IRQ detection threshold\n"); + +#define MYRI10GE_FW_OFFSET 1024*1024 +#define MYRI10GE_HIGHPART_TO_U32(X) \ +(sizeof (X) == 8) ? ((u32)((u64)(X) >> 32)) : (0) +#define MYRI10GE_LOWPART_TO_U32(X) ((u32)(X)) + +#define myri10ge_pio_copy(to,from,size) __iowrite64_copy(to,from,size/8) + +static int +myri10ge_send_cmd(struct myri10ge_priv *mgp, u32 cmd, + struct myri10ge_cmd *data, int atomic) +{ + struct mcp_cmd *buf; + char buf_bytes[sizeof(*buf) + 8]; + struct mcp_cmd_response *response = mgp->cmd; + char __iomem *cmd_addr = mgp->sram + MXGEFW_CMD_OFFSET; + u32 dma_low, dma_high, result, value; + int sleep_total = 0; + + /* ensure buf is aligned to 8 bytes */ + buf = (struct mcp_cmd *)ALIGN((unsigned long)buf_bytes, 8); + + buf->data0 = htonl(data->data0); + buf->data1 = htonl(data->data1); + buf->data2 = htonl(data->data2); + buf->cmd = htonl(cmd); + dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus); + dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus); + + buf->response_addr.low = htonl(dma_low); + buf->response_addr.high = htonl(dma_high); + response->result = MYRI10GE_NO_RESPONSE_RESULT; + mb(); + myri10ge_pio_copy(cmd_addr, buf, sizeof(*buf)); + + /* wait up to 15ms. Longest command is the DMA benchmark, + * which is capped at 5ms, but runs from a timeout handler + * that runs every 7.8ms. So a 15ms timeout leaves us with + * a 2.2ms margin + */ + if (atomic) { + /* if atomic is set, do not sleep, + * and try to get the completion quickly + * (1ms will be enough for those commands) */ + for (sleep_total = 0; + sleep_total < 1000 + && response->result == MYRI10GE_NO_RESPONSE_RESULT; + sleep_total += 10) + udelay(10); + } else { + /* use msleep for most command */ + for (sleep_total = 0; + sleep_total < 15 + && response->result == MYRI10GE_NO_RESPONSE_RESULT; + sleep_total++) + msleep(1); + } + + result = ntohl(response->result); + value = ntohl(response->data); + if (result != MYRI10GE_NO_RESPONSE_RESULT) { + if (result == 0) { + data->data0 = value; + return 0; + } else { + dev_err(&mgp->pdev->dev, + "command %d failed, result = %d\n", + cmd, result); + return -ENXIO; + } + } + + dev_err(&mgp->pdev->dev, "command %d timed out, result = %d\n", + cmd, result); + return -EAGAIN; +} + +/* + * The eeprom strings on the lanaiX have the format + * SN=x\0 + * MAC=x:x:x:x:x:x\0 + * PT:ddd mmm xx xx:xx:xx xx\0 + * PV:ddd mmm xx xx:xx:xx xx\0 + */ +static int myri10ge_read_mac_addr(struct myri10ge_priv *mgp) +{ + char *ptr, *limit; + int i; + + ptr = mgp->eeprom_strings; + limit = mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE; + + while (*ptr != '\0' && ptr < limit) { + if (memcmp(ptr, "MAC=", 4) == 0) { + ptr += 4; + mgp->mac_addr_string = ptr; + for (i = 0; i < 6; i++) { + if ((ptr + 2) > limit) + goto abort; + mgp->mac_addr[i] = + simple_strtoul(ptr, &ptr, 16); + ptr += 1; + } + } + if (memcmp((const void *)ptr, "SN=", 3) == 0) { + ptr += 3; + mgp->serial_number = simple_strtoul(ptr, &ptr, 10); + } + while (ptr < limit && *ptr++) ; + } + + return 0; + +abort: + dev_err(&mgp->pdev->dev, "failed to parse eeprom_strings\n"); + return -ENXIO; +} + +/* + * Enable or disable periodic RDMAs from the host to make certain + * chipsets resend dropped PCIe messages + */ + +static void myri10ge_dummy_rdma(struct myri10ge_priv *mgp, int enable) +{ + char __iomem *submit; + u32 buf[16]; + u32 dma_low, dma_high; + int i; + + /* clear confirmation addr */ + mgp->cmd->data = 0; + mb(); + + /* send a rdma command to the PCIe engine, and wait for the + * response in the confirmation address. The firmware should + * write a -1 there to indicate it is alive and well + */ + dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus); + dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus); + + buf[0] = htonl(dma_high); /* confirm addr MSW */ + buf[1] = htonl(dma_low); /* confirm addr LSW */ + buf[2] = htonl(MYRI10GE_NO_CONFIRM_DATA); /* confirm data */ + buf[3] = htonl(dma_high); /* dummy addr MSW */ + buf[4] = htonl(dma_low); /* dummy addr LSW */ + buf[5] = htonl(enable); /* enable? */ + + submit = mgp->sram + 0xfc01c0; + + myri10ge_pio_copy(submit, &buf, sizeof(buf)); + for (i = 0; mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 20; i++) + msleep(1); + if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA) + dev_err(&mgp->pdev->dev, "dummy rdma %s failed\n", + (enable ? "enable" : "disable")); +} + +static int +myri10ge_validate_firmware(struct myri10ge_priv *mgp, + struct mcp_gen_header *hdr) +{ + struct device *dev = &mgp->pdev->dev; + int major, minor; + + /* check firmware type */ + if (ntohl(hdr->mcp_type) != MCP_TYPE_ETH) { + dev_err(dev, "Bad firmware type: 0x%x\n", ntohl(hdr->mcp_type)); + return -EINVAL; + } + + /* save firmware version for ethtool */ + strncpy(mgp->fw_version, hdr->version, sizeof(mgp->fw_version)); + + sscanf(mgp->fw_version, "%d.%d", &major, &minor); + + if (!(major == MXGEFW_VERSION_MAJOR && minor == MXGEFW_VERSION_MINOR)) { + dev_err(dev, "Found firmware version %s\n", mgp->fw_version); + dev_err(dev, "Driver needs %d.%d\n", MXGEFW_VERSION_MAJOR, + MXGEFW_VERSION_MINOR); + return -EINVAL; + } + return 0; +} + +static int myri10ge_load_hotplug_firmware(struct myri10ge_priv *mgp, u32 * size) +{ + unsigned crc, reread_crc; + const struct firmware *fw; + struct device *dev = &mgp->pdev->dev; + struct mcp_gen_header *hdr; + size_t hdr_offset; + int status; + + if ((status = request_firmware(&fw, mgp->fw_name, dev)) < 0) { + dev_err(dev, "Unable to load %s firmware image via hotplug\n", + mgp->fw_name); + status = -EINVAL; + goto abort_with_nothing; + } + + /* check size */ + + if (fw->size >= mgp->sram_size - MYRI10GE_FW_OFFSET || + fw->size < MCP_HEADER_PTR_OFFSET + 4) { + dev_err(dev, "Firmware size invalid:%d\n", (int)fw->size); + status = -EINVAL; + goto abort_with_fw; + } + + /* check id */ + hdr_offset = ntohl(*(u32 *) (fw->data + MCP_HEADER_PTR_OFFSET)); + if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > fw->size) { + dev_err(dev, "Bad firmware file\n"); + status = -EINVAL; + goto abort_with_fw; + } + hdr = (void *)(fw->data + hdr_offset); + + status = myri10ge_validate_firmware(mgp, hdr); + if (status != 0) + goto abort_with_fw; + + crc = crc32(~0, fw->data, fw->size); + memcpy_toio(mgp->sram + MYRI10GE_FW_OFFSET, fw->data, fw->size); + /* corruption checking is good for parity recovery and buggy chipset */ + memcpy_fromio(fw->data, mgp->sram + MYRI10GE_FW_OFFSET, fw->size); + reread_crc = crc32(~0, fw->data, fw->size); + if (crc != reread_crc) { + dev_err(dev, "CRC failed(fw-len=%u), got 0x%x (expect 0x%x)\n", + (unsigned)fw->size, reread_crc, crc); + status = -EIO; + goto abort_with_fw; + } + *size = (u32) fw->size; + +abort_with_fw: + release_firmware(fw); + +abort_with_nothing: + return status; +} + +static int myri10ge_adopt_running_firmware(struct myri10ge_priv *mgp) +{ + struct mcp_gen_header *hdr; + struct device *dev = &mgp->pdev->dev; + const size_t bytes = sizeof(struct mcp_gen_header); + size_t hdr_offset; + int status; + + /* find running firmware header */ + hdr_offset = ntohl(__raw_readl(mgp->sram + MCP_HEADER_PTR_OFFSET)); + + if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > mgp->sram_size) { + dev_err(dev, "Running firmware has bad header offset (%d)\n", + (int)hdr_offset); + return -EIO; + } + + /* copy header of running firmware from SRAM to host memory to + * validate firmware */ + hdr = kmalloc(bytes, GFP_KERNEL); + if (hdr == NULL) { + dev_err(dev, "could not malloc firmware hdr\n"); + return -ENOMEM; + } + memcpy_fromio(hdr, mgp->sram + hdr_offset, bytes); + status = myri10ge_validate_firmware(mgp, hdr); + kfree(hdr); + return status; +} + +static int myri10ge_load_firmware(struct myri10ge_priv *mgp) +{ + char __iomem *submit; + u32 buf[16]; + u32 dma_low, dma_high, size; + int status, i; + + status = myri10ge_load_hotplug_firmware(mgp, &size); + if (status) { + dev_warn(&mgp->pdev->dev, "hotplug firmware loading failed\n"); + + /* Do not attempt to adopt firmware if there + * was a bad crc */ + if (status == -EIO) + return status; + + status = myri10ge_adopt_running_firmware(mgp); + if (status != 0) { + dev_err(&mgp->pdev->dev, + "failed to adopt running firmware\n"); + return status; + } + dev_info(&mgp->pdev->dev, + "Successfully adopted running firmware\n"); + if (mgp->tx.boundary == 4096) { + dev_warn(&mgp->pdev->dev, + "Using firmware currently running on NIC" + ". For optimal\n"); + dev_warn(&mgp->pdev->dev, + "performance consider loading optimized " + "firmware\n"); + dev_warn(&mgp->pdev->dev, "via hotplug\n"); + } + + mgp->fw_name = "adopted"; + mgp->tx.boundary = 2048; + return status; + } + + /* clear confirmation addr */ + mgp->cmd->data = 0; + mb(); + + /* send a reload command to the bootstrap MCP, and wait for the + * response in the confirmation address. The firmware should + * write a -1 there to indicate it is alive and well + */ + dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus); + dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus); + + buf[0] = htonl(dma_high); /* confirm addr MSW */ + buf[1] = htonl(dma_low); /* confirm addr LSW */ + buf[2] = htonl(MYRI10GE_NO_CONFIRM_DATA); /* confirm data */ + + /* FIX: All newest firmware should un-protect the bottom of + * the sram before handoff. However, the very first interfaces + * do not. Therefore the handoff copy must skip the first 8 bytes + */ + buf[3] = htonl(MYRI10GE_FW_OFFSET + 8); /* where the code starts */ + buf[4] = htonl(size - 8); /* length of code */ + buf[5] = htonl(8); /* where to copy to */ + buf[6] = htonl(0); /* where to jump to */ + + submit = mgp->sram + 0xfc0000; + + myri10ge_pio_copy(submit, &buf, sizeof(buf)); + mb(); + msleep(1); + mb(); + i = 0; + while (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 20) { + msleep(1); + i++; + } + if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA) { + dev_err(&mgp->pdev->dev, "handoff failed\n"); + return -ENXIO; + } + dev_info(&mgp->pdev->dev, "handoff confirmed\n"); + myri10ge_dummy_rdma(mgp, mgp->tx.boundary != 4096); + + return 0; +} + +static int myri10ge_update_mac_address(struct myri10ge_priv *mgp, u8 * addr) +{ + struct myri10ge_cmd cmd; + int status; + + cmd.data0 = ((addr[0] << 24) | (addr[1] << 16) + | (addr[2] << 8) | addr[3]); + + cmd.data1 = ((addr[4] << 8) | (addr[5])); + + status = myri10ge_send_cmd(mgp, MXGEFW_SET_MAC_ADDRESS, &cmd, 0); + return status; +} + +static int myri10ge_change_pause(struct myri10ge_priv *mgp, int pause) +{ + struct myri10ge_cmd cmd; + int status, ctl; + + ctl = pause ? MXGEFW_ENABLE_FLOW_CONTROL : MXGEFW_DISABLE_FLOW_CONTROL; + status = myri10ge_send_cmd(mgp, ctl, &cmd, 0); + + if (status) { + printk(KERN_ERR + "myri10ge: %s: Failed to set flow control mode\n", + mgp->dev->name); + return status; + } + mgp->pause = pause; + return 0; +} + +static void +myri10ge_change_promisc(struct myri10ge_priv *mgp, int promisc, int atomic) +{ + struct myri10ge_cmd cmd; + int status, ctl; + + ctl = promisc ? MXGEFW_ENABLE_PROMISC : MXGEFW_DISABLE_PROMISC; + status = myri10ge_send_cmd(mgp, ctl, &cmd, atomic); + if (status) + printk(KERN_ERR "myri10ge: %s: Failed to set promisc mode\n", + mgp->dev->name); +} + +static int myri10ge_reset(struct myri10ge_priv *mgp) +{ + struct myri10ge_cmd cmd; + int status; + size_t bytes; + u32 len; + + /* try to send a reset command to the card to see if it + * is alive */ + memset(&cmd, 0, sizeof(cmd)); + status = myri10ge_send_cmd(mgp, MXGEFW_CMD_RESET, &cmd, 0); + if (status != 0) { + dev_err(&mgp->pdev->dev, "failed reset\n"); + return -ENXIO; + } + + /* Now exchange information about interrupts */ + + bytes = myri10ge_max_intr_slots * sizeof(*mgp->rx_done.entry); + memset(mgp->rx_done.entry, 0, bytes); + cmd.data0 = (u32) bytes; + status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_SIZE, &cmd, 0); + cmd.data0 = MYRI10GE_LOWPART_TO_U32(mgp->rx_done.bus); + cmd.data1 = MYRI10GE_HIGHPART_TO_U32(mgp->rx_done.bus); + status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_DMA, &cmd, 0); + + status |= + myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_ACK_OFFSET, &cmd, 0); + mgp->irq_claim = (__iomem u32 *) (mgp->sram + cmd.data0); + if (!mgp->msi_enabled) { + status |= myri10ge_send_cmd + (mgp, MXGEFW_CMD_GET_IRQ_DEASSERT_OFFSET, &cmd, 0); + mgp->irq_deassert = (__iomem u32 *) (mgp->sram + cmd.data0); + + } + status |= myri10ge_send_cmd + (mgp, MXGEFW_CMD_GET_INTR_COAL_DELAY_OFFSET, &cmd, 0); + mgp->intr_coal_delay_ptr = (__iomem u32 *) (mgp->sram + cmd.data0); + if (status != 0) { + dev_err(&mgp->pdev->dev, "failed set interrupt parameters\n"); + return status; + } + __raw_writel(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr); + + /* Run a small DMA test. + * The magic multipliers to the length tell the firmware + * to do DMA read, write, or read+write tests. The + * results are returned in cmd.data0. The upper 16 + * bits or the return is the number of transfers completed. + * The lower 16 bits is the time in 0.5us ticks that the + * transfers took to complete. + */ + + len = mgp->tx.boundary; + + cmd.data0 = MYRI10GE_LOWPART_TO_U32(mgp->rx_done.bus); + cmd.data1 = MYRI10GE_HIGHPART_TO_U32(mgp->rx_done.bus); + cmd.data2 = len * 0x10000; + status = myri10ge_send_cmd(mgp, MXGEFW_DMA_TEST, &cmd, 0); + if (status == 0) + mgp->read_dma = ((cmd.data0 >> 16) * len * 2) / + (cmd.data0 & 0xffff); + else + dev_warn(&mgp->pdev->dev, "DMA read benchmark failed: %d\n", + status); + cmd.data0 = MYRI10GE_LOWPART_TO_U32(mgp->rx_done.bus); + cmd.data1 = MYRI10GE_HIGHPART_TO_U32(mgp->rx_done.bus); + cmd.data2 = len * 0x1; + status = myri10ge_send_cmd(mgp, MXGEFW_DMA_TEST, &cmd, 0); + if (status == 0) + mgp->write_dma = ((cmd.data0 >> 16) * len * 2) / + (cmd.data0 & 0xffff); + else + dev_warn(&mgp->pdev->dev, "DMA write benchmark failed: %d\n", + status); + + cmd.data0 = MYRI10GE_LOWPART_TO_U32(mgp->rx_done.bus); + cmd.data1 = MYRI10GE_HIGHPART_TO_U32(mgp->rx_done.bus); + cmd.data2 = len * 0x10001; + status = myri10ge_send_cmd(mgp, MXGEFW_DMA_TEST, &cmd, 0); + if (status == 0) + mgp->read_write_dma = ((cmd.data0 >> 16) * len * 2 * 2) / + (cmd.data0 & 0xffff); + else + dev_warn(&mgp->pdev->dev, + "DMA read/write benchmark failed: %d\n", status); + + memset(mgp->rx_done.entry, 0, bytes); + + /* reset mcp/driver shared state back to 0 */ + mgp->tx.req = 0; + mgp->tx.done = 0; + mgp->tx.pkt_start = 0; + mgp->tx.pkt_done = 0; + mgp->rx_big.cnt = 0; + mgp->rx_small.cnt = 0; + mgp->rx_done.idx = 0; + mgp->rx_done.cnt = 0; + status = myri10ge_update_mac_address(mgp, mgp->dev->dev_addr); + myri10ge_change_promisc(mgp, 0, 0); + myri10ge_change_pause(mgp, mgp->pause); + return status; +} + +static inline void +myri10ge_submit_8rx(struct mcp_kreq_ether_recv __iomem * dst, + struct mcp_kreq_ether_recv *src) +{ + u32 low; + + low = src->addr_low; + src->addr_low = DMA_32BIT_MASK; + myri10ge_pio_copy(dst, src, 8 * sizeof(*src)); + mb(); + src->addr_low = low; + __raw_writel(low, &dst->addr_low); + mb(); +} + +/* + * Set of routunes to get a new receive buffer. Any buffer which + * crosses a 4KB boundary must start on a 4KB boundary due to PCIe + * wdma restrictions. We also try to align any smaller allocation to + * at least a 16 byte boundary for efficiency. We assume the linux + * memory allocator works by powers of 2, and will not return memory + * smaller than 2KB which crosses a 4KB boundary. If it does, we fall + * back to allocating 2x as much space as required. + * + * We intend to replace large (>4KB) skb allocations by using + * pages directly and building a fraglist in the near future. + */ + +static inline struct sk_buff *myri10ge_alloc_big(int bytes) +{ + struct sk_buff *skb; + unsigned long data, roundup; + + skb = dev_alloc_skb(bytes + 4096 + MXGEFW_PAD); + if (skb == NULL) + return NULL; + + /* Correct skb->truesize so that socket buffer + * accounting is not confused the rounding we must + * do to satisfy alignment constraints. + */ + skb->truesize -= 4096; + + data = (unsigned long)(skb->data); + roundup = (-data) & (4095); + skb_reserve(skb, roundup); + return skb; +} + +/* Allocate 2x as much space as required and use whichever portion + * does not cross a 4KB boundary */ +static inline struct sk_buff *myri10ge_alloc_small_safe(unsigned int bytes) +{ + struct sk_buff *skb; + unsigned long data, boundary; + + skb = dev_alloc_skb(2 * (bytes + MXGEFW_PAD) - 1); + if (unlikely(skb == NULL)) + return NULL; + + /* Correct skb->truesize so that socket buffer + * accounting is not confused the rounding we must + * do to satisfy alignment constraints. + */ + skb->truesize -= bytes + MXGEFW_PAD; + + data = (unsigned long)(skb->data); + boundary = (data + 4095UL) & ~4095UL; + if ((boundary - data) >= (bytes + MXGEFW_PAD)) + return skb; + + skb_reserve(skb, boundary - data); + return skb; +} + +/* Allocate just enough space, and verify that the allocated + * space does not cross a 4KB boundary */ +static inline struct sk_buff *myri10ge_alloc_small(int bytes) +{ + struct sk_buff *skb; + unsigned long roundup, data, end; + + skb = dev_alloc_skb(bytes + 16 + MXGEFW_PAD); + if (unlikely(skb == NULL)) + return NULL; + + /* Round allocated buffer to 16 byte boundary */ + data = (unsigned long)(skb->data); + roundup = (-data) & 15UL; + skb_reserve(skb, roundup); + /* Verify that the data buffer does not cross a page boundary */ + data = (unsigned long)(skb->data); + end = data + bytes + MXGEFW_PAD - 1; + if (unlikely(((end >> 12) != (data >> 12)) && (data & 4095UL))) { + printk(KERN_NOTICE + "myri10ge_alloc_small: small skb crossed 4KB boundary\n"); + myri10ge_skb_cross_4k = 1; + dev_kfree_skb_any(skb); + skb = myri10ge_alloc_small_safe(bytes); + } + return skb; +} + +static inline int +myri10ge_getbuf(struct myri10ge_rx_buf *rx, struct pci_dev *pdev, int bytes, + int idx) +{ + struct sk_buff *skb; + dma_addr_t bus; + int len, retval = 0; + + bytes += VLAN_HLEN; /* account for 802.1q vlan tag */ + + if ((bytes + MXGEFW_PAD) > (4096 - 16) /* linux overhead */ ) + skb = myri10ge_alloc_big(bytes); + else if (myri10ge_skb_cross_4k) + skb = myri10ge_alloc_small_safe(bytes); + else + skb = myri10ge_alloc_small(bytes); + + if (unlikely(skb == NULL)) { + rx->alloc_fail++; + retval = -ENOBUFS; + goto done; + } + + /* set len so that it only covers the area we + * need mapped for DMA */ + len = bytes + MXGEFW_PAD; + + bus = pci_map_single(pdev, skb->data, len, PCI_DMA_FROMDEVICE); + rx->info[idx].skb = skb; + pci_unmap_addr_set(&rx->info[idx], bus, bus); + pci_unmap_len_set(&rx->info[idx], len, len); + rx->shadow[idx].addr_low = htonl(MYRI10GE_LOWPART_TO_U32(bus)); + rx->shadow[idx].addr_high = htonl(MYRI10GE_HIGHPART_TO_U32(bus)); + +done: + /* copy 8 descriptors (64-bytes) to the mcp at a time */ + if ((idx & 7) == 7) { + if (rx->wc_fifo == NULL) + myri10ge_submit_8rx(&rx->lanai[idx - 7], + &rx->shadow[idx - 7]); + else { + mb(); + myri10ge_pio_copy(rx->wc_fifo, + &rx->shadow[idx - 7], 64); + } + } + return retval; +} + +static inline void myri10ge_vlan_ip_csum(struct sk_buff *skb, u16 hw_csum) +{ + struct vlan_hdr *vh = (struct vlan_hdr *)(skb->data); + + if ((skb->protocol == ntohs(ETH_P_8021Q)) && + (vh->h_vlan_encapsulated_proto == htons(ETH_P_IP) || + vh->h_vlan_encapsulated_proto == htons(ETH_P_IPV6))) { + skb->csum = hw_csum; + skb->ip_summed = CHECKSUM_HW; + } +} + +static inline unsigned long +myri10ge_rx_done(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx, + int bytes, int len, int csum) +{ + dma_addr_t bus; + struct sk_buff *skb; + int idx, unmap_len; + + idx = rx->cnt & rx->mask; + rx->cnt++; + + /* save a pointer to the received skb */ + skb = rx->info[idx].skb; + bus = pci_unmap_addr(&rx->info[idx], bus); + unmap_len = pci_unmap_len(&rx->info[idx], len); + + /* try to replace the received skb */ + if (myri10ge_getbuf(rx, mgp->pdev, bytes, idx)) { + /* drop the frame -- the old skbuf is re-cycled */ + mgp->stats.rx_dropped += 1; + return 0; + } + + /* unmap the recvd skb */ + pci_unmap_single(mgp->pdev, bus, unmap_len, PCI_DMA_FROMDEVICE); + + /* mcp implicitly skips 1st bytes so that packet is properly + * aligned */ + skb_reserve(skb, MXGEFW_PAD); + + /* set the length of the frame */ + skb_put(skb, len); + + skb->protocol = eth_type_trans(skb, mgp->dev); + skb->dev = mgp->dev; + if (mgp->csum_flag) { + if ((skb->protocol == ntohs(ETH_P_IP)) || + (skb->protocol == ntohs(ETH_P_IPV6))) { + skb->csum = ntohs((u16) csum); + skb->ip_summed = CHECKSUM_HW; + } else + myri10ge_vlan_ip_csum(skb, ntohs((u16) csum)); + } + + netif_receive_skb(skb); + mgp->dev->last_rx = jiffies; + return 1; +} + +static inline void myri10ge_tx_done(struct myri10ge_priv *mgp, int mcp_index) +{ + struct pci_dev *pdev = mgp->pdev; + struct myri10ge_tx_buf *tx = &mgp->tx; + struct sk_buff *skb; + int idx, len; + int limit = 0; + + while (tx->pkt_done != mcp_index) { + idx = tx->done & tx->mask; + skb = tx->info[idx].skb; + + /* Mark as free */ + tx->info[idx].skb = NULL; + if (tx->info[idx].last) { + tx->pkt_done++; + tx->info[idx].last = 0; + } + tx->done++; + len = pci_unmap_len(&tx->info[idx], len); + pci_unmap_len_set(&tx->info[idx], len, 0); + if (skb) { + mgp->stats.tx_bytes += skb->len; + mgp->stats.tx_packets++; + dev_kfree_skb_irq(skb); + if (len) + pci_unmap_single(pdev, + pci_unmap_addr(&tx->info[idx], + bus), len, + PCI_DMA_TODEVICE); + } else { + if (len) + pci_unmap_page(pdev, + pci_unmap_addr(&tx->info[idx], + bus), len, + PCI_DMA_TODEVICE); + } + + /* limit potential for livelock by only handling + * 2 full tx rings per call */ + if (unlikely(++limit > 2 * tx->mask)) + break; + } + /* start the queue if we've stopped it */ + if (netif_queue_stopped(mgp->dev) + && tx->req - tx->done < (tx->mask >> 1)) { + mgp->wake_queue++; + netif_wake_queue(mgp->dev); + } +} + +static inline void myri10ge_clean_rx_done(struct myri10ge_priv *mgp, int *limit) +{ + struct myri10ge_rx_done *rx_done = &mgp->rx_done; + unsigned long rx_bytes = 0; + unsigned long rx_packets = 0; + unsigned long rx_ok; + + int idx = rx_done->idx; + int cnt = rx_done->cnt; + u16 length; + u16 checksum; + + while (rx_done->entry[idx].length != 0 && *limit != 0) { + length = ntohs(rx_done->entry[idx].length); + rx_done->entry[idx].length = 0; + checksum = ntohs(rx_done->entry[idx].checksum); + if (length <= mgp->small_bytes) + rx_ok = myri10ge_rx_done(mgp, &mgp->rx_small, + mgp->small_bytes, + length, checksum); + else + rx_ok = myri10ge_rx_done(mgp, &mgp->rx_big, + mgp->dev->mtu + ETH_HLEN, + length, checksum); + rx_packets += rx_ok; + rx_bytes += rx_ok * (unsigned long)length; + cnt++; + idx = cnt & (myri10ge_max_intr_slots - 1); + + /* limit potential for livelock by only handling a + * limited number of frames. */ + (*limit)--; + } + rx_done->idx = idx; + rx_done->cnt = cnt; + mgp->stats.rx_packets += rx_packets; + mgp->stats.rx_bytes += rx_bytes; +} + +static inline void myri10ge_check_statblock(struct myri10ge_priv *mgp) +{ + struct mcp_irq_data *stats = mgp->fw_stats; + + if (unlikely(stats->stats_updated)) { + if (mgp->link_state != stats->link_up) { + mgp->link_state = stats->link_up; + if (mgp->link_state) { + printk(KERN_INFO "myri10ge: %s: link up\n", + mgp->dev->name); + netif_carrier_on(mgp->dev); + } else { + printk(KERN_INFO "myri10ge: %s: link down\n", + mgp->dev->name); + netif_carrier_off(mgp->dev); + } + } + if (mgp->rdma_tags_available != + ntohl(mgp->fw_stats->rdma_tags_available)) { + mgp->rdma_tags_available = + ntohl(mgp->fw_stats->rdma_tags_available); + printk(KERN_WARNING "myri10ge: %s: RDMA timed out! " + "%d tags left\n", mgp->dev->name, + mgp->rdma_tags_available); + } + mgp->down_cnt += stats->link_down; + if (stats->link_down) + wake_up(&mgp->down_wq); + } +} + +static int myri10ge_poll(struct net_device *netdev, int *budget) +{ + struct myri10ge_priv *mgp = netdev_priv(netdev); + struct myri10ge_rx_done *rx_done = &mgp->rx_done; + int limit, orig_limit, work_done; + + /* process as many rx events as NAPI will allow */ + limit = min(*budget, netdev->quota); + orig_limit = limit; + myri10ge_clean_rx_done(mgp, &limit); + work_done = orig_limit - limit; + *budget -= work_done; + netdev->quota -= work_done; + + if (rx_done->entry[rx_done->idx].length == 0 || !netif_running(netdev)) { + netif_rx_complete(netdev); + __raw_writel(htonl(3), mgp->irq_claim); + return 0; + } + return 1; +} + +static irqreturn_t myri10ge_intr(int irq, void *arg, struct pt_regs *regs) +{ + struct myri10ge_priv *mgp = arg; + struct mcp_irq_data *stats = mgp->fw_stats; + struct myri10ge_tx_buf *tx = &mgp->tx; + u32 send_done_count; + int i; + + /* make sure it is our IRQ, and that the DMA has finished */ + if (unlikely(!stats->valid)) + return (IRQ_NONE); + + /* low bit indicates receives are present, so schedule + * napi poll handler */ + if (stats->valid & 1) + netif_rx_schedule(mgp->dev); + + if (!mgp->msi_enabled) { + __raw_writel(0, mgp->irq_deassert); + if (!myri10ge_deassert_wait) + stats->valid = 0; + mb(); + } else + stats->valid = 0; + + /* Wait for IRQ line to go low, if using INTx */ + i = 0; + while (1) { + i++; + /* check for transmit completes and receives */ + send_done_count = ntohl(stats->send_done_count); + if (send_done_count != tx->pkt_done) + myri10ge_tx_done(mgp, (int)send_done_count); + if (unlikely(i > myri10ge_max_irq_loops)) { + printk(KERN_WARNING "myri10ge: %s: irq stuck?\n", + mgp->dev->name); + stats->valid = 0; + schedule_work(&mgp->watchdog_work); + } + if (likely(stats->valid == 0)) + break; + cpu_relax(); + barrier(); + } + + myri10ge_check_statblock(mgp); + + __raw_writel(htonl(3), mgp->irq_claim + 1); + return (IRQ_HANDLED); +} + +static int +myri10ge_get_settings(struct net_device *netdev, struct ethtool_cmd *cmd) +{ + cmd->autoneg = AUTONEG_DISABLE; + cmd->speed = SPEED_10000; + cmd->duplex = DUPLEX_FULL; + return 0; +} + +static void +myri10ge_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) +{ + struct myri10ge_priv *mgp = netdev_priv(netdev); + + strlcpy(info->driver, "myri10ge", sizeof(info->driver)); + strlcpy(info->version, MYRI10GE_VERSION_STR, sizeof(info->version)); + strlcpy(info->fw_version, mgp->fw_version, sizeof(info->fw_version)); + strlcpy(info->bus_info, pci_name(mgp->pdev), sizeof(info->bus_info)); +} + +static int +myri10ge_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal) +{ + struct myri10ge_priv *mgp = netdev_priv(netdev); + coal->rx_coalesce_usecs = mgp->intr_coal_delay; + return 0; +} + +static int +myri10ge_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal) +{ + struct myri10ge_priv *mgp = netdev_priv(netdev); + + mgp->intr_coal_delay = coal->rx_coalesce_usecs; + __raw_writel(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr); + return 0; +} + +static void +myri10ge_get_pauseparam(struct net_device *netdev, + struct ethtool_pauseparam *pause) +{ + struct myri10ge_priv *mgp = netdev_priv(netdev); + + pause->autoneg = 0; + pause->rx_pause = mgp->pause; + pause->tx_pause = mgp->pause; +} + +static int +myri10ge_set_pauseparam(struct net_device *netdev, + struct ethtool_pauseparam *pause) +{ + struct myri10ge_priv *mgp = netdev_priv(netdev); + + if (pause->tx_pause != mgp->pause) + return myri10ge_change_pause(mgp, pause->tx_pause); + if (pause->rx_pause != mgp->pause) + return myri10ge_change_pause(mgp, pause->tx_pause); + if (pause->autoneg != 0) + return -EINVAL; + return 0; +} + +static void +myri10ge_get_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ring) +{ + struct myri10ge_priv *mgp = netdev_priv(netdev); + + ring->rx_mini_max_pending = mgp->rx_small.mask + 1; + ring->rx_max_pending = mgp->rx_big.mask + 1; + ring->rx_jumbo_max_pending = 0; + ring->tx_max_pending = mgp->rx_small.mask + 1; + ring->rx_mini_pending = ring->rx_mini_max_pending; + ring->rx_pending = ring->rx_max_pending; + ring->rx_jumbo_pending = ring->rx_jumbo_max_pending; + ring->tx_pending = ring->tx_max_pending; +} + +static u32 myri10ge_get_rx_csum(struct net_device *netdev) +{ + struct myri10ge_priv *mgp = netdev_priv(netdev); + if (mgp->csum_flag) + return 1; + else + return 0; +} + +static int myri10ge_set_rx_csum(struct net_device *netdev, u32 csum_enabled) +{ + struct myri10ge_priv *mgp = netdev_priv(netdev); + if (csum_enabled) + mgp->csum_flag = MXGEFW_FLAGS_CKSUM; + else + mgp->csum_flag = 0; + return 0; +} + +static const char myri10ge_gstrings_stats[][ETH_GSTRING_LEN] = { + "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors", + "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions", + "rx_length_errors", "rx_over_errors", "rx_crc_errors", + "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors", + "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors", + "tx_heartbeat_errors", "tx_window_errors", + /* device-specific stats */ + "read_dma_bw_MBs", "write_dma_bw_MBs", "read_write_dma_bw_MBs", + "serial_number", "tx_pkt_start", "tx_pkt_done", + "tx_req", "tx_done", "rx_small_cnt", "rx_big_cnt", + "wake_queue", "stop_queue", "watchdog_resets", "tx_linearized", + "link_up", "dropped_link_overflow", "dropped_link_error_or_filtered", + "dropped_runt", "dropped_overrun", "dropped_no_small_buffer", + "dropped_no_big_buffer" +}; + +#define MYRI10GE_NET_STATS_LEN 21 +#define MYRI10GE_STATS_LEN sizeof(myri10ge_gstrings_stats) / ETH_GSTRING_LEN + +static void +myri10ge_get_strings(struct net_device *netdev, u32 stringset, u8 * data) +{ + switch (stringset) { + case ETH_SS_STATS: + memcpy(data, *myri10ge_gstrings_stats, + sizeof(myri10ge_gstrings_stats)); + break; + } +} + +static int myri10ge_get_stats_count(struct net_device *netdev) +{ + return MYRI10GE_STATS_LEN; +} + +static void +myri10ge_get_ethtool_stats(struct net_device *netdev, + struct ethtool_stats *stats, u64 * data) +{ + struct myri10ge_priv *mgp = netdev_priv(netdev); + int i; + + for (i = 0; i < MYRI10GE_NET_STATS_LEN; i++) + data[i] = ((unsigned long *)&mgp->stats)[i]; + + data[i++] = (unsigned int)mgp->read_dma; + data[i++] = (unsigned int)mgp->write_dma; + data[i++] = (unsigned int)mgp->read_write_dma; + data[i++] = (unsigned int)mgp->serial_number; + data[i++] = (unsigned int)mgp->tx.pkt_start; + data[i++] = (unsigned int)mgp->tx.pkt_done; + data[i++] = (unsigned int)mgp->tx.req; + data[i++] = (unsigned int)mgp->tx.done; + data[i++] = (unsigned int)mgp->rx_small.cnt; + data[i++] = (unsigned int)mgp->rx_big.cnt; + data[i++] = (unsigned int)mgp->wake_queue; + data[i++] = (unsigned int)mgp->stop_queue; + data[i++] = (unsigned int)mgp->watchdog_resets; + data[i++] = (unsigned int)mgp->tx_linearized; + data[i++] = (unsigned int)ntohl(mgp->fw_stats->link_up); + data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_link_overflow); + data[i++] = + (unsigned int)ntohl(mgp->fw_stats->dropped_link_error_or_filtered); + data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_runt); + data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_overrun); + data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_no_small_buffer); + data[i++] = (unsigned int)ntohl(mgp->fw_stats->dropped_no_big_buffer); +} + +static struct ethtool_ops myri10ge_ethtool_ops = { + .get_settings = myri10ge_get_settings, + .get_drvinfo = myri10ge_get_drvinfo, + .get_coalesce = myri10ge_get_coalesce, + .set_coalesce = myri10ge_set_coalesce, + .get_pauseparam = myri10ge_get_pauseparam, + .set_pauseparam = myri10ge_set_pauseparam, + .get_ringparam = myri10ge_get_ringparam, + .get_rx_csum = myri10ge_get_rx_csum, + .set_rx_csum = myri10ge_set_rx_csum, + .get_tx_csum = ethtool_op_get_tx_csum, + .set_tx_csum = ethtool_op_set_tx_csum, + .get_sg = ethtool_op_get_sg, + .set_sg = ethtool_op_set_sg, +#ifdef NETIF_F_TSO + .get_tso = ethtool_op_get_tso, + .set_tso = ethtool_op_set_tso, +#endif + .get_strings = myri10ge_get_strings, + .get_stats_count = myri10ge_get_stats_count, + .get_ethtool_stats = myri10ge_get_ethtool_stats +}; + +static int myri10ge_allocate_rings(struct net_device *dev) +{ + struct myri10ge_priv *mgp; + struct myri10ge_cmd cmd; + int tx_ring_size, rx_ring_size; + int tx_ring_entries, rx_ring_entries; + int i, status; + size_t bytes; + + mgp = netdev_priv(dev); + + /* get ring sizes */ + + status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_RING_SIZE, &cmd, 0); + tx_ring_size = cmd.data0; + status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_RX_RING_SIZE, &cmd, 0); + rx_ring_size = cmd.data0; + + tx_ring_entries = tx_ring_size / sizeof(struct mcp_kreq_ether_send); + rx_ring_entries = rx_ring_size / sizeof(struct mcp_dma_addr); + mgp->tx.mask = tx_ring_entries - 1; + mgp->rx_small.mask = mgp->rx_big.mask = rx_ring_entries - 1; + + /* allocate the host shadow rings */ + + bytes = 8 + (MYRI10GE_MAX_SEND_DESC_TSO + 4) + * sizeof(*mgp->tx.req_list); + mgp->tx.req_bytes = kzalloc(bytes, GFP_KERNEL); + if (mgp->tx.req_bytes == NULL) + goto abort_with_nothing; + + /* ensure req_list entries are aligned to 8 bytes */ + mgp->tx.req_list = (struct mcp_kreq_ether_send *) + ALIGN((unsigned long)mgp->tx.req_bytes, 8); + + bytes = rx_ring_entries * sizeof(*mgp->rx_small.shadow); + mgp->rx_small.shadow = kzalloc(bytes, GFP_KERNEL); + if (mgp->rx_small.shadow == NULL) + goto abort_with_tx_req_bytes; + + bytes = rx_ring_entries * sizeof(*mgp->rx_big.shadow); + mgp->rx_big.shadow = kzalloc(bytes, GFP_KERNEL); + if (mgp->rx_big.shadow == NULL) + goto abort_with_rx_small_shadow; + + /* allocate the host info rings */ + + bytes = tx_ring_entries * sizeof(*mgp->tx.info); + mgp->tx.info = kzalloc(bytes, GFP_KERNEL); + if (mgp->tx.info == NULL) + goto abort_with_rx_big_shadow; + + bytes = rx_ring_entries * sizeof(*mgp->rx_small.info); + mgp->rx_small.info = kzalloc(bytes, GFP_KERNEL); + if (mgp->rx_small.info == NULL) + goto abort_with_tx_info; + + bytes = rx_ring_entries * sizeof(*mgp->rx_big.info); + mgp->rx_big.info = kzalloc(bytes, GFP_KERNEL); + if (mgp->rx_big.info == NULL) + goto abort_with_rx_small_info; + + /* Fill the receive rings */ + + for (i = 0; i <= mgp->rx_small.mask; i++) { + status = myri10ge_getbuf(&mgp->rx_small, mgp->pdev, + mgp->small_bytes, i); + if (status) { + printk(KERN_ERR + "myri10ge: %s: alloced only %d small bufs\n", + dev->name, i); + goto abort_with_rx_small_ring; + } + } + + for (i = 0; i <= mgp->rx_big.mask; i++) { + status = + myri10ge_getbuf(&mgp->rx_big, mgp->pdev, + dev->mtu + ETH_HLEN, i); + if (status) { + printk(KERN_ERR + "myri10ge: %s: alloced only %d big bufs\n", + dev->name, i); + goto abort_with_rx_big_ring; + } + } + + return 0; + +abort_with_rx_big_ring: + for (i = 0; i <= mgp->rx_big.mask; i++) { + if (mgp->rx_big.info[i].skb != NULL) + dev_kfree_skb_any(mgp->rx_big.info[i].skb); + if (pci_unmap_len(&mgp->rx_big.info[i], len)) + pci_unmap_single(mgp->pdev, + pci_unmap_addr(&mgp->rx_big.info[i], + bus), + pci_unmap_len(&mgp->rx_big.info[i], + len), + PCI_DMA_FROMDEVICE); + } + +abort_with_rx_small_ring: + for (i = 0; i <= mgp->rx_small.mask; i++) { + if (mgp->rx_small.info[i].skb != NULL) + dev_kfree_skb_any(mgp->rx_small.info[i].skb); + if (pci_unmap_len(&mgp->rx_small.info[i], len)) + pci_unmap_single(mgp->pdev, + pci_unmap_addr(&mgp->rx_small.info[i], + bus), + pci_unmap_len(&mgp->rx_small.info[i], + len), + PCI_DMA_FROMDEVICE); + } + kfree(mgp->rx_big.info); + +abort_with_rx_small_info: + kfree(mgp->rx_small.info); + +abort_with_tx_info: + kfree(mgp->tx.info); + +abort_with_rx_big_shadow: + kfree(mgp->rx_big.shadow); + +abort_with_rx_small_shadow: + kfree(mgp->rx_small.shadow); + +abort_with_tx_req_bytes: + kfree(mgp->tx.req_bytes); + mgp->tx.req_bytes = NULL; + mgp->tx.req_list = NULL; + +abort_with_nothing: + return status; +} + +static void myri10ge_free_rings(struct net_device *dev) +{ + struct myri10ge_priv *mgp; + struct sk_buff *skb; + struct myri10ge_tx_buf *tx; + int i, len, idx; + + mgp = netdev_priv(dev); + + for (i = 0; i <= mgp->rx_big.mask; i++) { + if (mgp->rx_big.info[i].skb != NULL) + dev_kfree_skb_any(mgp->rx_big.info[i].skb); + if (pci_unmap_len(&mgp->rx_big.info[i], len)) + pci_unmap_single(mgp->pdev, + pci_unmap_addr(&mgp->rx_big.info[i], + bus), + pci_unmap_len(&mgp->rx_big.info[i], + len), + PCI_DMA_FROMDEVICE); + } + + for (i = 0; i <= mgp->rx_small.mask; i++) { + if (mgp->rx_small.info[i].skb != NULL) + dev_kfree_skb_any(mgp->rx_small.info[i].skb); + if (pci_unmap_len(&mgp->rx_small.info[i], len)) + pci_unmap_single(mgp->pdev, + pci_unmap_addr(&mgp->rx_small.info[i], + bus), + pci_unmap_len(&mgp->rx_small.info[i], + len), + PCI_DMA_FROMDEVICE); + } + + tx = &mgp->tx; + while (tx->done != tx->req) { + idx = tx->done & tx->mask; + skb = tx->info[idx].skb; + + /* Mark as free */ + tx->info[idx].skb = NULL; + tx->done++; + len = pci_unmap_len(&tx->info[idx], len); + pci_unmap_len_set(&tx->info[idx], len, 0); + if (skb) { + mgp->stats.tx_dropped++; + dev_kfree_skb_any(skb); + if (len) + pci_unmap_single(mgp->pdev, + pci_unmap_addr(&tx->info[idx], + bus), len, + PCI_DMA_TODEVICE); + } else { + if (len) + pci_unmap_page(mgp->pdev, + pci_unmap_addr(&tx->info[idx], + bus), len, + PCI_DMA_TODEVICE); + } + } + kfree(mgp->rx_big.info); + + kfree(mgp->rx_small.info); + + kfree(mgp->tx.info); + + kfree(mgp->rx_big.shadow); + + kfree(mgp->rx_small.shadow); + + kfree(mgp->tx.req_bytes); + mgp->tx.req_bytes = NULL; + mgp->tx.req_list = NULL; +} + +static int myri10ge_open(struct net_device *dev) +{ + struct myri10ge_priv *mgp; + struct myri10ge_cmd cmd; + int status, big_pow2; + + mgp = netdev_priv(dev); + + if (mgp->running != MYRI10GE_ETH_STOPPED) + return -EBUSY; + + mgp->running = MYRI10GE_ETH_STARTING; + status = myri10ge_reset(mgp); + if (status != 0) { + printk(KERN_ERR "myri10ge: %s: failed reset\n", dev->name); + mgp->running = MYRI10GE_ETH_STOPPED; + return -ENXIO; + } + + /* decide what small buffer size to use. For good TCP rx + * performance, it is important to not receive 1514 byte + * frames into jumbo buffers, as it confuses the socket buffer + * accounting code, leading to drops and erratic performance. + */ + + if (dev->mtu <= ETH_DATA_LEN) + mgp->small_bytes = 128; /* enough for a TCP header */ + else + mgp->small_bytes = ETH_FRAME_LEN; /* enough for an ETH_DATA_LEN frame */ + + /* Override the small buffer size? */ + if (myri10ge_small_bytes > 0) + mgp->small_bytes = myri10ge_small_bytes; + + /* If the user sets an obscenely small MTU, adjust the small + * bytes down to nearly nothing */ + if (mgp->small_bytes >= (dev->mtu + ETH_HLEN)) + mgp->small_bytes = 64; + + /* get the lanai pointers to the send and receive rings */ + + status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_OFFSET, &cmd, 0); + mgp->tx.lanai = + (struct mcp_kreq_ether_send __iomem *)(mgp->sram + cmd.data0); + + status |= + myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SMALL_RX_OFFSET, &cmd, 0); + mgp->rx_small.lanai = + (struct mcp_kreq_ether_recv __iomem *)(mgp->sram + cmd.data0); + + status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_BIG_RX_OFFSET, &cmd, 0); + mgp->rx_big.lanai = + (struct mcp_kreq_ether_recv __iomem *)(mgp->sram + cmd.data0); + + if (status != 0) { + printk(KERN_ERR + "myri10ge: %s: failed to get ring sizes or locations\n", + dev->name); + mgp->running = MYRI10GE_ETH_STOPPED; + return -ENXIO; + } + + if (mgp->mtrr >= 0) { + mgp->tx.wc_fifo = (u8 __iomem *) mgp->sram + 0x200000; + mgp->rx_small.wc_fifo = (u8 __iomem *) mgp->sram + 0x300000; + mgp->rx_big.wc_fifo = (u8 __iomem *) mgp->sram + 0x340000; + } else { + mgp->tx.wc_fifo = NULL; + mgp->rx_small.wc_fifo = NULL; + mgp->rx_big.wc_fifo = NULL; + } + + status = myri10ge_allocate_rings(dev); + if (status != 0) + goto abort_with_nothing; + + /* Firmware needs the big buff size as a power of 2. Lie and + * tell him the buffer is larger, because we only use 1 + * buffer/pkt, and the mtu will prevent overruns. + */ + big_pow2 = dev->mtu + ETH_HLEN + MXGEFW_PAD; + while ((big_pow2 & (big_pow2 - 1)) != 0) + big_pow2++; + + /* now give firmware buffers sizes, and MTU */ + cmd.data0 = dev->mtu + ETH_HLEN + VLAN_HLEN; + status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_MTU, &cmd, 0); + cmd.data0 = mgp->small_bytes; + status |= + myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_SMALL_BUFFER_SIZE, &cmd, 0); + cmd.data0 = big_pow2; + status |= + myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_BIG_BUFFER_SIZE, &cmd, 0); + if (status) { + printk(KERN_ERR "myri10ge: %s: Couldn't set buffer sizes\n", + dev->name); + goto abort_with_rings; + } + + cmd.data0 = MYRI10GE_LOWPART_TO_U32(mgp->fw_stats_bus); + cmd.data1 = MYRI10GE_HIGHPART_TO_U32(mgp->fw_stats_bus); + status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_STATS_DMA, &cmd, 0); + if (status) { + printk(KERN_ERR "myri10ge: %s: Couldn't set stats DMA\n", + dev->name); + goto abort_with_rings; + } + + mgp->link_state = -1; + mgp->rdma_tags_available = 15; + + netif_poll_enable(mgp->dev); /* must happen prior to any irq */ + + status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_UP, &cmd, 0); + if (status) { + printk(KERN_ERR "myri10ge: %s: Couldn't bring up link\n", + dev->name); + goto abort_with_rings; + } + + mgp->wake_queue = 0; + mgp->stop_queue = 0; + mgp->running = MYRI10GE_ETH_RUNNING; + mgp->watchdog_timer.expires = jiffies + myri10ge_watchdog_timeout * HZ; + add_timer(&mgp->watchdog_timer); + netif_wake_queue(dev); + return 0; + +abort_with_rings: + myri10ge_free_rings(dev); + +abort_with_nothing: + mgp->running = MYRI10GE_ETH_STOPPED; + return -ENOMEM; +} + +static int myri10ge_close(struct net_device *dev) +{ + struct myri10ge_priv *mgp; + struct myri10ge_cmd cmd; + int status, old_down_cnt; + + mgp = netdev_priv(dev); + + if (mgp->running != MYRI10GE_ETH_RUNNING) + return 0; + + if (mgp->tx.req_bytes == NULL) + return 0; + + del_timer_sync(&mgp->watchdog_timer); + mgp->running = MYRI10GE_ETH_STOPPING; + netif_poll_disable(mgp->dev); + netif_carrier_off(dev); + netif_stop_queue(dev); + old_down_cnt = mgp->down_cnt; + mb(); + status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_DOWN, &cmd, 0); + if (status) + printk(KERN_ERR "myri10ge: %s: Couldn't bring down link\n", + dev->name); + + wait_event_timeout(mgp->down_wq, old_down_cnt != mgp->down_cnt, HZ); + if (old_down_cnt == mgp->down_cnt) + printk(KERN_ERR "myri10ge: %s never got down irq\n", dev->name); + + netif_tx_disable(dev); + + myri10ge_free_rings(dev); + + mgp->running = MYRI10GE_ETH_STOPPED; + return 0; +} + +/* copy an array of struct mcp_kreq_ether_send's to the mcp. Copy + * backwards one at a time and handle ring wraps */ + +static inline void +myri10ge_submit_req_backwards(struct myri10ge_tx_buf *tx, + struct mcp_kreq_ether_send *src, int cnt) +{ + int idx, starting_slot; + starting_slot = tx->req; + while (cnt > 1) { + cnt--; + idx = (starting_slot + cnt) & tx->mask; + myri10ge_pio_copy(&tx->lanai[idx], &src[cnt], sizeof(*src)); + mb(); + } +} + +/* + * copy an array of struct mcp_kreq_ether_send's to the mcp. Copy + * at most 32 bytes at a time, so as to avoid involving the software + * pio handler in the nic. We re-write the first segment's flags + * to mark them valid only after writing the entire chain. + */ + +static inline void +myri10ge_submit_req(struct myri10ge_tx_buf *tx, struct mcp_kreq_ether_send *src, + int cnt) +{ + int idx, i; + struct mcp_kreq_ether_send __iomem *dstp, *dst; + struct mcp_kreq_ether_send *srcp; + u8 last_flags; + + idx = tx->req & tx->mask; + + last_flags = src->flags; + src->flags = 0; + mb(); + dst = dstp = &tx->lanai[idx]; + srcp = src; + + if ((idx + cnt) < tx->mask) { + for (i = 0; i < (cnt - 1); i += 2) { + myri10ge_pio_copy(dstp, srcp, 2 * sizeof(*src)); + mb(); /* force write every 32 bytes */ + srcp += 2; + dstp += 2; + } + } else { + /* submit all but the first request, and ensure + * that it is submitted below */ + myri10ge_submit_req_backwards(tx, src, cnt); + i = 0; + } + if (i < cnt) { + /* submit the first request */ + myri10ge_pio_copy(dstp, srcp, sizeof(*src)); + mb(); /* barrier before setting valid flag */ + } + + /* re-write the last 32-bits with the valid flags */ + src->flags = last_flags; + __raw_writel(*((u32 *) src + 3), (u32 __iomem *) dst + 3); + tx->req += cnt; + mb(); +} + +static inline void +myri10ge_submit_req_wc(struct myri10ge_tx_buf *tx, + struct mcp_kreq_ether_send *src, int cnt) +{ + tx->req += cnt; + mb(); + while (cnt >= 4) { + myri10ge_pio_copy(tx->wc_fifo, src, 64); + mb(); + src += 4; + cnt -= 4; + } + if (cnt > 0) { + /* pad it to 64 bytes. The src is 64 bytes bigger than it + * needs to be so that we don't overrun it */ + myri10ge_pio_copy(tx->wc_fifo + (cnt << 18), src, 64); + mb(); + } +} + +/* + * Transmit a packet. We need to split the packet so that a single + * segment does not cross myri10ge->tx.boundary, so this makes segment + * counting tricky. So rather than try to count segments up front, we + * just give up if there are too few segments to hold a reasonably + * fragmented packet currently available. If we run + * out of segments while preparing a packet for DMA, we just linearize + * it and try again. + */ + +static int myri10ge_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct myri10ge_priv *mgp = netdev_priv(dev); + struct mcp_kreq_ether_send *req; + struct myri10ge_tx_buf *tx = &mgp->tx; + struct skb_frag_struct *frag; + dma_addr_t bus; + u32 low, high_swapped; + unsigned int len; + int idx, last_idx, avail, frag_cnt, frag_idx, count, mss, max_segments; + u16 pseudo_hdr_offset, cksum_offset; + int cum_len, seglen, boundary, rdma_count; + u8 flags, odd_flag; + +again: + req = tx->req_list; + avail = tx->mask - 1 - (tx->req - tx->done); + + mss = 0; + max_segments = MXGEFW_MAX_SEND_DESC; + +#ifdef NETIF_F_TSO + if (skb->len > (dev->mtu + ETH_HLEN)) { + mss = skb_shinfo(skb)->tso_size; + if (mss != 0) + max_segments = MYRI10GE_MAX_SEND_DESC_TSO; + } +#endif /*NETIF_F_TSO */ + + if ((unlikely(avail < max_segments))) { + /* we are out of transmit resources */ + mgp->stop_queue++; + netif_stop_queue(dev); + return 1; + } + + /* Setup checksum offloading, if needed */ + cksum_offset = 0; + pseudo_hdr_offset = 0; + odd_flag = 0; + flags = (MXGEFW_FLAGS_NO_TSO | MXGEFW_FLAGS_FIRST); + if (likely(skb->ip_summed == CHECKSUM_HW)) { + cksum_offset = (skb->h.raw - skb->data); + pseudo_hdr_offset = (skb->h.raw + skb->csum) - skb->data; + /* If the headers are excessively large, then we must + * fall back to a software checksum */ + if (unlikely(cksum_offset > 255 || pseudo_hdr_offset > 127)) { + if (skb_checksum_help(skb, 0)) + goto drop; + cksum_offset = 0; + pseudo_hdr_offset = 0; + } else { + pseudo_hdr_offset = htons(pseudo_hdr_offset); + odd_flag = MXGEFW_FLAGS_ALIGN_ODD; + flags |= MXGEFW_FLAGS_CKSUM; + } + } + + cum_len = 0; + +#ifdef NETIF_F_TSO + if (mss) { /* TSO */ + /* this removes any CKSUM flag from before */ + flags = (MXGEFW_FLAGS_TSO_HDR | MXGEFW_FLAGS_FIRST); + + /* negative cum_len signifies to the + * send loop that we are still in the + * header portion of the TSO packet. + * TSO header must be at most 134 bytes long */ + cum_len = -((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); + + /* for TSO, pseudo_hdr_offset holds mss. + * The firmware figures out where to put + * the checksum by parsing the header. */ + pseudo_hdr_offset = htons(mss); + } else +#endif /*NETIF_F_TSO */ + /* Mark small packets, and pad out tiny packets */ + if (skb->len <= MXGEFW_SEND_SMALL_SIZE) { + flags |= MXGEFW_FLAGS_SMALL; + + /* pad frames to at least ETH_ZLEN bytes */ + if (unlikely(skb->len < ETH_ZLEN)) { + skb = skb_padto(skb, ETH_ZLEN); + if (skb == NULL) { + /* The packet is gone, so we must + * return 0 */ + mgp->stats.tx_dropped += 1; + return 0; + } + /* adjust the len to account for the zero pad + * so that the nic can know how long it is */ + skb->len = ETH_ZLEN; + } + } + + /* map the skb for DMA */ + len = skb->len - skb->data_len; + idx = tx->req & tx->mask; + tx->info[idx].skb = skb; + bus = pci_map_single(mgp->pdev, skb->data, len, PCI_DMA_TODEVICE); + pci_unmap_addr_set(&tx->info[idx], bus, bus); + pci_unmap_len_set(&tx->info[idx], len, len); + + frag_cnt = skb_shinfo(skb)->nr_frags; + frag_idx = 0; + count = 0; + rdma_count = 0; + + /* "rdma_count" is the number of RDMAs belonging to the + * current packet BEFORE the current send request. For + * non-TSO packets, this is equal to "count". + * For TSO packets, rdma_count needs to be reset + * to 0 after a segment cut. + * + * The rdma_count field of the send request is + * the number of RDMAs of the packet starting at + * that request. For TSO send requests with one ore more cuts + * in the middle, this is the number of RDMAs starting + * after the last cut in the request. All previous + * segments before the last cut implicitly have 1 RDMA. + * + * Since the number of RDMAs is not known beforehand, + * it must be filled-in retroactively - after each + * segmentation cut or at the end of the entire packet. + */ + + while (1) { + /* Break the SKB or Fragment up into pieces which + * do not cross mgp->tx.boundary */ + low = MYRI10GE_LOWPART_TO_U32(bus); + high_swapped = htonl(MYRI10GE_HIGHPART_TO_U32(bus)); + while (len) { + u8 flags_next; + int cum_len_next; + + if (unlikely(count == max_segments)) + goto abort_linearize; + + boundary = (low + tx->boundary) & ~(tx->boundary - 1); + seglen = boundary - low; + if (seglen > len) + seglen = len; + flags_next = flags & ~MXGEFW_FLAGS_FIRST; + cum_len_next = cum_len + seglen; +#ifdef NETIF_F_TSO + if (mss) { /* TSO */ + (req - rdma_count)->rdma_count = rdma_count + 1; + + if (likely(cum_len >= 0)) { /* payload */ + int next_is_first, chop; + + chop = (cum_len_next > mss); + cum_len_next = cum_len_next % mss; + next_is_first = (cum_len_next == 0); + flags |= chop * MXGEFW_FLAGS_TSO_CHOP; + flags_next |= next_is_first * + MXGEFW_FLAGS_FIRST; + rdma_count |= -(chop | next_is_first); + rdma_count += chop & !next_is_first; + } else if (likely(cum_len_next >= 0)) { /* header ends */ + int small; + + rdma_count = -1; + cum_len_next = 0; + seglen = -cum_len; + small = (mss <= MXGEFW_SEND_SMALL_SIZE); + flags_next = MXGEFW_FLAGS_TSO_PLD | + MXGEFW_FLAGS_FIRST | + (small * MXGEFW_FLAGS_SMALL); + } + } +#endif /* NETIF_F_TSO */ + req->addr_high = high_swapped; + req->addr_low = htonl(low); + req->pseudo_hdr_offset = pseudo_hdr_offset; + req->pad = 0; /* complete solid 16-byte block; does this matter? */ + req->rdma_count = 1; + req->length = htons(seglen); + req->cksum_offset = cksum_offset; + req->flags = flags | ((cum_len & 1) * odd_flag); + + low += seglen; + len -= seglen; + cum_len = cum_len_next; + flags = flags_next; + req++; + count++; + rdma_count++; + if (unlikely(cksum_offset > seglen)) + cksum_offset -= seglen; + else + cksum_offset = 0; + } + if (frag_idx == frag_cnt) + break; + + /* map next fragment for DMA */ + idx = (count + tx->req) & tx->mask; + frag = &skb_shinfo(skb)->frags[frag_idx]; + frag_idx++; + len = frag->size; + bus = pci_map_page(mgp->pdev, frag->page, frag->page_offset, + len, PCI_DMA_TODEVICE); + pci_unmap_addr_set(&tx->info[idx], bus, bus); + pci_unmap_len_set(&tx->info[idx], len, len); + } + + (req - rdma_count)->rdma_count = rdma_count; +#ifdef NETIF_F_TSO + if (mss) + do { + req--; + req->flags |= MXGEFW_FLAGS_TSO_LAST; + } while (!(req->flags & (MXGEFW_FLAGS_TSO_CHOP | + MXGEFW_FLAGS_FIRST))); +#endif + idx = ((count - 1) + tx->req) & tx->mask; + tx->info[idx].last = 1; + if (tx->wc_fifo == NULL) + myri10ge_submit_req(tx, tx->req_list, count); + else + myri10ge_submit_req_wc(tx, tx->req_list, count); + tx->pkt_start++; + if ((avail - count) < MXGEFW_MAX_SEND_DESC) { + mgp->stop_queue++; + netif_stop_queue(dev); + } + dev->trans_start = jiffies; + return 0; + +abort_linearize: + /* Free any DMA resources we've alloced and clear out the skb + * slot so as to not trip up assertions, and to avoid a + * double-free if linearizing fails */ + + last_idx = (idx + 1) & tx->mask; + idx = tx->req & tx->mask; + tx->info[idx].skb = NULL; + do { + len = pci_unmap_len(&tx->info[idx], len); + if (len) { + if (tx->info[idx].skb != NULL) + pci_unmap_single(mgp->pdev, + pci_unmap_addr(&tx->info[idx], + bus), len, + PCI_DMA_TODEVICE); + else + pci_unmap_page(mgp->pdev, + pci_unmap_addr(&tx->info[idx], + bus), len, + PCI_DMA_TODEVICE); + pci_unmap_len_set(&tx->info[idx], len, 0); + tx->info[idx].skb = NULL; + } + idx = (idx + 1) & tx->mask; + } while (idx != last_idx); + if (skb_shinfo(skb)->tso_size) { + printk(KERN_ERR + "myri10ge: %s: TSO but wanted to linearize?!?!?\n", + mgp->dev->name); + goto drop; + } + + if (skb_linearize(skb, GFP_ATOMIC)) + goto drop; + + mgp->tx_linearized++; + goto again; + +drop: + dev_kfree_skb_any(skb); + mgp->stats.tx_dropped += 1; + return 0; + +} + +static struct net_device_stats *myri10ge_get_stats(struct net_device *dev) +{ + struct myri10ge_priv *mgp = netdev_priv(dev); + return &mgp->stats; +} + +static void myri10ge_set_multicast_list(struct net_device *dev) +{ + /* can be called from atomic contexts, + * pass 1 to force atomicity in myri10ge_send_cmd() */ + myri10ge_change_promisc(netdev_priv(dev), dev->flags & IFF_PROMISC, 1); +} + +static int myri10ge_set_mac_address(struct net_device *dev, void *addr) +{ + struct sockaddr *sa = addr; + struct myri10ge_priv *mgp = netdev_priv(dev); + int status; + + if (!is_valid_ether_addr(sa->sa_data)) + return -EADDRNOTAVAIL; + + status = myri10ge_update_mac_address(mgp, sa->sa_data); + if (status != 0) { + printk(KERN_ERR + "myri10ge: %s: changing mac address failed with %d\n", + dev->name, status); + return status; + } + + /* change the dev structure */ + memcpy(dev->dev_addr, sa->sa_data, 6); + return 0; +} + +static int myri10ge_change_mtu(struct net_device *dev, int new_mtu) +{ + struct myri10ge_priv *mgp = netdev_priv(dev); + int error = 0; + + if ((new_mtu < 68) || (ETH_HLEN + new_mtu > MYRI10GE_MAX_ETHER_MTU)) { + printk(KERN_ERR "myri10ge: %s: new mtu (%d) is not valid\n", + dev->name, new_mtu); + return -EINVAL; + } + printk(KERN_INFO "%s: changing mtu from %d to %d\n", + dev->name, dev->mtu, new_mtu); + if (mgp->running) { + /* if we change the mtu on an active device, we must + * reset the device so the firmware sees the change */ + myri10ge_close(dev); + dev->mtu = new_mtu; + myri10ge_open(dev); + } else + dev->mtu = new_mtu; + + return error; +} + +/* + * Enable ECRC to align PCI-E Completion packets on an 8-byte boundary. + * Only do it if the bridge is a root port since we don't want to disturb + * any other device, except if forced with myri10ge_ecrc_enable > 1. + */ + +#define PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_PCIE 0x005d + +static void myri10ge_enable_ecrc(struct myri10ge_priv *mgp) +{ + struct pci_dev *bridge = mgp->pdev->bus->self; + struct device *dev = &mgp->pdev->dev; + unsigned cap; + unsigned err_cap; + u16 val; + u8 ext_type; + int ret; + + if (!myri10ge_ecrc_enable || !bridge) + return; + + /* check that the bridge is a root port */ + cap = pci_find_capability(bridge, PCI_CAP_ID_EXP); + pci_read_config_word(bridge, cap + PCI_CAP_FLAGS, &val); + ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4; + if (ext_type != PCI_EXP_TYPE_ROOT_PORT) { + if (myri10ge_ecrc_enable > 1) { + struct pci_dev *old_bridge = bridge; + + /* Walk the hierarchy up to the root port + * where ECRC has to be enabled */ + do { + bridge = bridge->bus->self; + if (!bridge) { + dev_err(dev, + "Failed to find root port" + " to force ECRC\n"); + return; + } + cap = + pci_find_capability(bridge, PCI_CAP_ID_EXP); + pci_read_config_word(bridge, + cap + PCI_CAP_FLAGS, &val); + ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4; + } while (ext_type != PCI_EXP_TYPE_ROOT_PORT); + + dev_info(dev, + "Forcing ECRC on non-root port %s" + " (enabling on root port %s)\n", + pci_name(old_bridge), pci_name(bridge)); + } else { + dev_err(dev, + "Not enabling ECRC on non-root port %s\n", + pci_name(bridge)); + return; + } + } + + cap = pci_find_ext_capability(bridge, PCI_EXT_CAP_ID_ERR); + /* nvidia ext cap is not always linked in ext cap chain */ + if (!cap + && bridge->vendor == PCI_VENDOR_ID_NVIDIA + && bridge->device == PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_PCIE) + cap = 0x160; + + if (!cap) + return; + + ret = pci_read_config_dword(bridge, cap + PCI_ERR_CAP, &err_cap); + if (ret) { + dev_err(dev, "failed reading ext-conf-space of %s\n", + pci_name(bridge)); + dev_err(dev, "\t pci=nommconf in use? " + "or buggy/incomplete/absent ACPI MCFG attr?\n"); + return; + } + if (!(err_cap & PCI_ERR_CAP_ECRC_GENC)) + return; + + err_cap |= PCI_ERR_CAP_ECRC_GENE; + pci_write_config_dword(bridge, cap + PCI_ERR_CAP, err_cap); + dev_info(dev, "Enabled ECRC on upstream bridge %s\n", pci_name(bridge)); + mgp->tx.boundary = 4096; + mgp->fw_name = myri10ge_fw_aligned; +} + +/* + * The Lanai Z8E PCI-E interface achieves higher Read-DMA throughput + * when the PCI-E Completion packets are aligned on an 8-byte + * boundary. Some PCI-E chip sets always align Completion packets; on + * the ones that do not, the alignment can be enforced by enabling + * ECRC generation (if supported). + * + * When PCI-E Completion packets are not aligned, it is actually more + * efficient to limit Read-DMA transactions to 2KB, rather than 4KB. + * + * If the driver can neither enable ECRC nor verify that it has + * already been enabled, then it must use a firmware image which works + * around unaligned completion packets (myri10ge_ethp_z8e.dat), and it + * should also ensure that it never gives the device a Read-DMA which is + * larger than 2KB by setting the tx.boundary to 2KB. If ECRC is + * enabled, then the driver should use the aligned (myri10ge_eth_z8e.dat) + * firmware image, and set tx.boundary to 4KB. + */ + +#define PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE 0x0132 + +static void myri10ge_select_firmware(struct myri10ge_priv *mgp) +{ + struct pci_dev *bridge = mgp->pdev->bus->self; + + mgp->tx.boundary = 2048; + mgp->fw_name = myri10ge_fw_unaligned; + + if (myri10ge_force_firmware == 0) { + myri10ge_enable_ecrc(mgp); + + /* Check to see if the upstream bridge is known to + * provide aligned completions */ + if (bridge + /* ServerWorks HT2000/HT1000 */ + && bridge->vendor == PCI_VENDOR_ID_SERVERWORKS + && bridge->device == + PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE) { + dev_info(&mgp->pdev->dev, + "Assuming aligned completions (0x%x:0x%x)\n", + bridge->vendor, bridge->device); + mgp->tx.boundary = 4096; + mgp->fw_name = myri10ge_fw_aligned; + } + } else { + if (myri10ge_force_firmware == 1) { + dev_info(&mgp->pdev->dev, + "Assuming aligned completions (forced)\n"); + mgp->tx.boundary = 4096; + mgp->fw_name = myri10ge_fw_aligned; + } else { + dev_info(&mgp->pdev->dev, + "Assuming unaligned completions (forced)\n"); + mgp->tx.boundary = 2048; + mgp->fw_name = myri10ge_fw_unaligned; + } + } + if (myri10ge_fw_name != NULL) { + dev_info(&mgp->pdev->dev, "overriding firmware to %s\n", + myri10ge_fw_name); + mgp->fw_name = myri10ge_fw_name; + } +} + +static void myri10ge_save_state(struct myri10ge_priv *mgp) +{ + struct pci_dev *pdev = mgp->pdev; + int cap; + + pci_save_state(pdev); + /* now save PCIe and MSI state that Linux will not + * save for us */ + cap = pci_find_capability(pdev, PCI_CAP_ID_EXP); + pci_read_config_dword(pdev, cap + PCI_EXP_DEVCTL, &mgp->devctl); + cap = pci_find_capability(pdev, PCI_CAP_ID_MSI); + pci_read_config_word(pdev, cap + PCI_MSI_FLAGS, &mgp->msi_flags); +} + +static void myri10ge_restore_state(struct myri10ge_priv *mgp) +{ + struct pci_dev *pdev = mgp->pdev; + int cap; + + /* restore PCIe and MSI state that linux will not */ + cap = pci_find_capability(pdev, PCI_CAP_ID_EXP); + pci_write_config_dword(pdev, cap + PCI_CAP_ID_EXP, mgp->devctl); + cap = pci_find_capability(pdev, PCI_CAP_ID_MSI); + pci_write_config_word(pdev, cap + PCI_MSI_FLAGS, mgp->msi_flags); + + pci_restore_state(pdev); +} + +#ifdef CONFIG_PM + +static int myri10ge_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct myri10ge_priv *mgp; + struct net_device *netdev; + + mgp = pci_get_drvdata(pdev); + if (mgp == NULL) + return -EINVAL; + netdev = mgp->dev; + + netif_device_detach(netdev); + if (netif_running(netdev)) { + printk(KERN_INFO "myri10ge: closing %s\n", netdev->name); + rtnl_lock(); + myri10ge_close(netdev); + rtnl_unlock(); + } + myri10ge_dummy_rdma(mgp, 0); + free_irq(pdev->irq, mgp); + myri10ge_save_state(mgp); + pci_disable_device(pdev); + pci_set_power_state(pdev, pci_choose_state(pdev, state)); + return 0; +} + +static int myri10ge_resume(struct pci_dev *pdev) +{ + struct myri10ge_priv *mgp; + struct net_device *netdev; + int status; + u16 vendor; + + mgp = pci_get_drvdata(pdev); + if (mgp == NULL) + return -EINVAL; + netdev = mgp->dev; + pci_set_power_state(pdev, 0); /* zeros conf space as a side effect */ + msleep(5); /* give card time to respond */ + pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor); + if (vendor == 0xffff) { + printk(KERN_ERR "myri10ge: %s: device disappeared!\n", + mgp->dev->name); + return -EIO; + } + myri10ge_restore_state(mgp); + pci_enable_device(pdev); + pci_set_master(pdev); + + status = request_irq(pdev->irq, myri10ge_intr, SA_SHIRQ, + netdev->name, mgp); + if (status != 0) { + dev_err(&pdev->dev, "failed to allocate IRQ\n"); + goto abort_with_msi; + } + + myri10ge_reset(mgp); + myri10ge_dummy_rdma(mgp, mgp->tx.boundary != 4096); + + /* Save configuration space to be restored if the + * nic resets due to a parity error */ + myri10ge_save_state(mgp); + + if (netif_running(netdev)) { + rtnl_lock(); + myri10ge_open(netdev); + rtnl_unlock(); + } + netif_device_attach(netdev); + + return 0; + +abort_with_msi: + return -EIO; + +} + +#endif /* CONFIG_PM */ + +static u32 myri10ge_read_reboot(struct myri10ge_priv *mgp) +{ + struct pci_dev *pdev = mgp->pdev; + int vs = mgp->vendor_specific_offset; + u32 reboot; + + /*enter read32 mode */ + pci_write_config_byte(pdev, vs + 0x10, 0x3); + + /*read REBOOT_STATUS (0xfffffff0) */ + pci_write_config_dword(pdev, vs + 0x18, 0xfffffff0); + pci_read_config_dword(pdev, vs + 0x14, &reboot); + return reboot; +} + +/* + * This watchdog is used to check whether the board has suffered + * from a parity error and needs to be recovered. + */ +static void myri10ge_watchdog(void *arg) +{ + struct myri10ge_priv *mgp = arg; + u32 reboot; + int status; + u16 cmd, vendor; + + mgp->watchdog_resets++; + pci_read_config_word(mgp->pdev, PCI_COMMAND, &cmd); + if ((cmd & PCI_COMMAND_MASTER) == 0) { + /* Bus master DMA disabled? Check to see + * if the card rebooted due to a parity error + * For now, just report it */ + reboot = myri10ge_read_reboot(mgp); + printk(KERN_ERR + "myri10ge: %s: NIC rebooted (0x%x), resetting\n", + mgp->dev->name, reboot); + /* + * A rebooted nic will come back with config space as + * it was after power was applied to PCIe bus. + * Attempt to restore config space which was saved + * when the driver was loaded, or the last time the + * nic was resumed from power saving mode. + */ + myri10ge_restore_state(mgp); + } else { + /* if we get back -1's from our slot, perhaps somebody + * powered off our card. Don't try to reset it in + * this case */ + if (cmd == 0xffff) { + pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor); + if (vendor == 0xffff) { + printk(KERN_ERR + "myri10ge: %s: device disappeared!\n", + mgp->dev->name); + return; + } + } + /* Perhaps it is a software error. Try to reset */ + + printk(KERN_ERR "myri10ge: %s: device timeout, resetting\n", + mgp->dev->name); + printk(KERN_INFO "myri10ge: %s: %d %d %d %d %d\n", + mgp->dev->name, mgp->tx.req, mgp->tx.done, + mgp->tx.pkt_start, mgp->tx.pkt_done, + (int)ntohl(mgp->fw_stats->send_done_count)); + msleep(2000); + printk(KERN_INFO "myri10ge: %s: %d %d %d %d %d\n", + mgp->dev->name, mgp->tx.req, mgp->tx.done, + mgp->tx.pkt_start, mgp->tx.pkt_done, + (int)ntohl(mgp->fw_stats->send_done_count)); + } + rtnl_lock(); + myri10ge_close(mgp->dev); + status = myri10ge_load_firmware(mgp); + if (status != 0) + printk(KERN_ERR "myri10ge: %s: failed to load firmware\n", + mgp->dev->name); + else + myri10ge_open(mgp->dev); + rtnl_unlock(); +} + +/* + * We use our own timer routine rather than relying upon + * netdev->tx_timeout because we have a very large hardware transmit + * queue. Due to the large queue, the netdev->tx_timeout function + * cannot detect a NIC with a parity error in a timely fashion if the + * NIC is lightly loaded. + */ +static void myri10ge_watchdog_timer(unsigned long arg) +{ + struct myri10ge_priv *mgp; + + mgp = (struct myri10ge_priv *)arg; + if (mgp->tx.req != mgp->tx.done && + mgp->tx.done == mgp->watchdog_tx_done) + /* nic seems like it might be stuck.. */ + schedule_work(&mgp->watchdog_work); + else + /* rearm timer */ + mod_timer(&mgp->watchdog_timer, + jiffies + myri10ge_watchdog_timeout * HZ); + + mgp->watchdog_tx_done = mgp->tx.done; +} + +static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + struct net_device *netdev; + struct myri10ge_priv *mgp; + struct device *dev = &pdev->dev; + size_t bytes; + int i; + int status = -ENXIO; + int cap; + int dac_enabled; + u16 val; + + netdev = alloc_etherdev(sizeof(*mgp)); + if (netdev == NULL) { + dev_err(dev, "Could not allocate ethernet device\n"); + return -ENOMEM; + } + + mgp = netdev_priv(netdev); + memset(mgp, 0, sizeof(*mgp)); + mgp->dev = netdev; + mgp->pdev = pdev; + mgp->csum_flag = MXGEFW_FLAGS_CKSUM; + mgp->pause = myri10ge_flow_control; + mgp->intr_coal_delay = myri10ge_intr_coal_delay; + init_waitqueue_head(&mgp->down_wq); + + if (pci_enable_device(pdev)) { + dev_err(&pdev->dev, "pci_enable_device call failed\n"); + status = -ENODEV; + goto abort_with_netdev; + } + myri10ge_select_firmware(mgp); + + /* Find the vendor-specific cap so we can check + * the reboot register later on */ + mgp->vendor_specific_offset + = pci_find_capability(pdev, PCI_CAP_ID_VNDR); + + /* Set our max read request to 4KB */ + cap = pci_find_capability(pdev, PCI_CAP_ID_EXP); + if (cap < 64) { + dev_err(&pdev->dev, "Bad PCI_CAP_ID_EXP location %d\n", cap); + goto abort_with_netdev; + } + status = pci_read_config_word(pdev, cap + PCI_EXP_DEVCTL, &val); + if (status != 0) { + dev_err(&pdev->dev, "Error %d reading PCI_EXP_DEVCTL\n", + status); + goto abort_with_netdev; + } + val = (val & ~PCI_EXP_DEVCTL_READRQ) | (5 << 12); + status = pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL, val); + if (status != 0) { + dev_err(&pdev->dev, "Error %d writing PCI_EXP_DEVCTL\n", + status); + goto abort_with_netdev; + } + + pci_set_master(pdev); + dac_enabled = 1; + status = pci_set_dma_mask(pdev, DMA_64BIT_MASK); + if (status != 0) { + dac_enabled = 0; + dev_err(&pdev->dev, + "64-bit pci address mask was refused, trying 32-bit"); + status = pci_set_dma_mask(pdev, DMA_32BIT_MASK); + } + if (status != 0) { + dev_err(&pdev->dev, "Error %d setting DMA mask\n", status); + goto abort_with_netdev; + } + mgp->cmd = pci_alloc_consistent(pdev, sizeof(*mgp->cmd), &mgp->cmd_bus); + if (mgp->cmd == NULL) + goto abort_with_netdev; + + mgp->fw_stats = pci_alloc_consistent(pdev, sizeof(*mgp->fw_stats), + &mgp->fw_stats_bus); + if (mgp->fw_stats == NULL) + goto abort_with_cmd; + + mgp->board_span = pci_resource_len(pdev, 0); + mgp->iomem_base = pci_resource_start(pdev, 0); + mgp->mtrr = -1; +#ifdef CONFIG_MTRR + mgp->mtrr = mtrr_add(mgp->iomem_base, mgp->board_span, + MTRR_TYPE_WRCOMB, 1); +#endif + /* Hack. need to get rid of these magic numbers */ + mgp->sram_size = + 2 * 1024 * 1024 - (2 * (48 * 1024) + (32 * 1024)) - 0x100; + if (mgp->sram_size > mgp->board_span) { + dev_err(&pdev->dev, "board span %ld bytes too small\n", + mgp->board_span); + goto abort_with_wc; + } + mgp->sram = ioremap(mgp->iomem_base, mgp->board_span); + if (mgp->sram == NULL) { + dev_err(&pdev->dev, "ioremap failed for %ld bytes at 0x%lx\n", + mgp->board_span, mgp->iomem_base); + status = -ENXIO; + goto abort_with_wc; + } + memcpy_fromio(mgp->eeprom_strings, + mgp->sram + mgp->sram_size - MYRI10GE_EEPROM_STRINGS_SIZE, + MYRI10GE_EEPROM_STRINGS_SIZE); + memset(mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE - 2, 0, 2); + status = myri10ge_read_mac_addr(mgp); + if (status) + goto abort_with_ioremap; + + for (i = 0; i < ETH_ALEN; i++) + netdev->dev_addr[i] = mgp->mac_addr[i]; + + /* allocate rx done ring */ + bytes = myri10ge_max_intr_slots * sizeof(*mgp->rx_done.entry); + mgp->rx_done.entry = + pci_alloc_consistent(pdev, bytes, &mgp->rx_done.bus); + if (mgp->rx_done.entry == NULL) + goto abort_with_ioremap; + memset(mgp->rx_done.entry, 0, bytes); + + status = myri10ge_load_firmware(mgp); + if (status != 0) { + dev_err(&pdev->dev, "failed to load firmware\n"); + goto abort_with_rx_done; + } + + status = myri10ge_reset(mgp); + if (status != 0) { + dev_err(&pdev->dev, "failed reset\n"); + goto abort_with_firmware; + } + + if (myri10ge_msi) { + status = pci_enable_msi(pdev); + if (status != 0) + dev_err(&pdev->dev, + "Error %d setting up MSI; falling back to xPIC\n", + status); + else + mgp->msi_enabled = 1; + } + + status = request_irq(pdev->irq, myri10ge_intr, SA_SHIRQ, + netdev->name, mgp); + if (status != 0) { + dev_err(&pdev->dev, "failed to allocate IRQ\n"); + goto abort_with_firmware; + } + + pci_set_drvdata(pdev, mgp); + if ((myri10ge_initial_mtu + ETH_HLEN) > MYRI10GE_MAX_ETHER_MTU) + myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN; + if ((myri10ge_initial_mtu + ETH_HLEN) < 68) + myri10ge_initial_mtu = 68; + netdev->mtu = myri10ge_initial_mtu; + netdev->open = myri10ge_open; + netdev->stop = myri10ge_close; + netdev->hard_start_xmit = myri10ge_xmit; + netdev->get_stats = myri10ge_get_stats; + netdev->base_addr = mgp->iomem_base; + netdev->irq = pdev->irq; + netdev->change_mtu = myri10ge_change_mtu; + netdev->set_multicast_list = myri10ge_set_multicast_list; + netdev->set_mac_address = myri10ge_set_mac_address; + netdev->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO; + if (dac_enabled) + netdev->features |= NETIF_F_HIGHDMA; + netdev->poll = myri10ge_poll; + netdev->weight = myri10ge_napi_weight; + + /* Save configuration space to be restored if the + * nic resets due to a parity error */ + myri10ge_save_state(mgp); + /* Restore state immediately since pci_save_msi_state disables MSI */ + myri10ge_restore_state(mgp); + + /* Setup the watchdog timer */ + setup_timer(&mgp->watchdog_timer, myri10ge_watchdog_timer, + (unsigned long)mgp); + + SET_ETHTOOL_OPS(netdev, &myri10ge_ethtool_ops); + INIT_WORK(&mgp->watchdog_work, myri10ge_watchdog, mgp); + status = register_netdev(netdev); + if (status != 0) { + dev_err(&pdev->dev, "register_netdev failed: %d\n", status); + goto abort_with_irq; + } + + printk(KERN_INFO "myri10ge: %s: %s IRQ %d, tx bndry %d, fw %s, WC %s\n", + netdev->name, (mgp->msi_enabled ? "MSI" : "xPIC"), + pdev->irq, mgp->tx.boundary, mgp->fw_name, + (mgp->mtrr >= 0 ? "Enabled" : "Disabled")); + + return 0; + +abort_with_irq: + free_irq(pdev->irq, mgp); + if (mgp->msi_enabled) + pci_disable_msi(pdev); + +abort_with_firmware: + myri10ge_dummy_rdma(mgp, 0); + +abort_with_rx_done: + bytes = myri10ge_max_intr_slots * sizeof(*mgp->rx_done.entry); + pci_free_consistent(pdev, bytes, mgp->rx_done.entry, mgp->rx_done.bus); + +abort_with_ioremap: + iounmap(mgp->sram); + +abort_with_wc: +#ifdef CONFIG_MTRR + if (mgp->mtrr >= 0) + mtrr_del(mgp->mtrr, mgp->iomem_base, mgp->board_span); +#endif + pci_free_consistent(pdev, sizeof(*mgp->fw_stats), + mgp->fw_stats, mgp->fw_stats_bus); + +abort_with_cmd: + pci_free_consistent(pdev, sizeof(*mgp->cmd), mgp->cmd, mgp->cmd_bus); + +abort_with_netdev: + + free_netdev(netdev); + return status; +} + +/* + * myri10ge_remove + * + * Does what is necessary to shutdown one Myrinet device. Called + * once for each Myrinet card by the kernel when a module is + * unloaded. + */ +static void myri10ge_remove(struct pci_dev *pdev) +{ + struct myri10ge_priv *mgp; + struct net_device *netdev; + size_t bytes; + + mgp = pci_get_drvdata(pdev); + if (mgp == NULL) + return; + + flush_scheduled_work(); + netdev = mgp->dev; + unregister_netdev(netdev); + free_irq(pdev->irq, mgp); + if (mgp->msi_enabled) + pci_disable_msi(pdev); + + myri10ge_dummy_rdma(mgp, 0); + + bytes = myri10ge_max_intr_slots * sizeof(*mgp->rx_done.entry); + pci_free_consistent(pdev, bytes, mgp->rx_done.entry, mgp->rx_done.bus); + + iounmap(mgp->sram); + +#ifdef CONFIG_MTRR + if (mgp->mtrr >= 0) + mtrr_del(mgp->mtrr, mgp->iomem_base, mgp->board_span); +#endif + pci_free_consistent(pdev, sizeof(*mgp->fw_stats), + mgp->fw_stats, mgp->fw_stats_bus); + + pci_free_consistent(pdev, sizeof(*mgp->cmd), mgp->cmd, mgp->cmd_bus); + + free_netdev(netdev); + pci_set_drvdata(pdev, NULL); +} + +#define PCI_DEVICE_ID_MYIRCOM_MYRI10GE_Z8E 0x0008 + +static struct pci_device_id myri10ge_pci_tbl[] = { + {PCI_DEVICE(PCI_VENDOR_ID_MYRICOM, PCI_DEVICE_ID_MYIRCOM_MYRI10GE_Z8E)}, + {0}, +}; + +static struct pci_driver myri10ge_driver = { + .name = "myri10ge", + .probe = myri10ge_probe, + .remove = myri10ge_remove, + .id_table = myri10ge_pci_tbl, +#ifdef CONFIG_PM + .suspend = myri10ge_suspend, + .resume = myri10ge_resume, +#endif +}; + +static __init int myri10ge_init_module(void) +{ + printk(KERN_INFO "%s: Version %s\n", myri10ge_driver.name, + MYRI10GE_VERSION_STR); + return pci_register_driver(&myri10ge_driver); +} + +module_init(myri10ge_init_module); + +static __exit void myri10ge_cleanup_module(void) +{ + pci_unregister_driver(&myri10ge_driver); +} + +module_exit(myri10ge_cleanup_module); diff --git a/drivers/net/myri10ge/myri10ge_mcp.h b/drivers/net/myri10ge/myri10ge_mcp.h new file mode 100644 index 000000000000..ac23e18db63d --- /dev/null +++ b/drivers/net/myri10ge/myri10ge_mcp.h @@ -0,0 +1,205 @@ +#ifndef __MYRI10GE_MCP_H__ +#define __MYRI10GE_MCP_H__ + +#define MXGEFW_VERSION_MAJOR 1 +#define MXGEFW_VERSION_MINOR 4 + +/* 8 Bytes */ +struct mcp_dma_addr { + u32 high; + u32 low; +}; + +/* 4 Bytes */ +struct mcp_slot { + u16 checksum; + u16 length; +}; + +/* 64 Bytes */ +struct mcp_cmd { + u32 cmd; + u32 data0; /* will be low portion if data > 32 bits */ + /* 8 */ + u32 data1; /* will be high portion if data > 32 bits */ + u32 data2; /* currently unused.. */ + /* 16 */ + struct mcp_dma_addr response_addr; + /* 24 */ + u8 pad[40]; +}; + +/* 8 Bytes */ +struct mcp_cmd_response { + u32 data; + u32 result; +}; + +/* + * flags used in mcp_kreq_ether_send_t: + * + * The SMALL flag is only needed in the first segment. It is raised + * for packets that are total less or equal 512 bytes. + * + * The CKSUM flag must be set in all segments. + * + * The PADDED flags is set if the packet needs to be padded, and it + * must be set for all segments. + * + * The MXGEFW_FLAGS_ALIGN_ODD must be set if the cumulative + * length of all previous segments was odd. + */ + +#define MXGEFW_FLAGS_SMALL 0x1 +#define MXGEFW_FLAGS_TSO_HDR 0x1 +#define MXGEFW_FLAGS_FIRST 0x2 +#define MXGEFW_FLAGS_ALIGN_ODD 0x4 +#define MXGEFW_FLAGS_CKSUM 0x8 +#define MXGEFW_FLAGS_TSO_LAST 0x8 +#define MXGEFW_FLAGS_NO_TSO 0x10 +#define MXGEFW_FLAGS_TSO_CHOP 0x10 +#define MXGEFW_FLAGS_TSO_PLD 0x20 + +#define MXGEFW_SEND_SMALL_SIZE 1520 +#define MXGEFW_MAX_MTU 9400 + +union mcp_pso_or_cumlen { + u16 pseudo_hdr_offset; + u16 cum_len; +}; + +#define MXGEFW_MAX_SEND_DESC 12 +#define MXGEFW_PAD 2 + +/* 16 Bytes */ +struct mcp_kreq_ether_send { + u32 addr_high; + u32 addr_low; + u16 pseudo_hdr_offset; + u16 length; + u8 pad; + u8 rdma_count; + u8 cksum_offset; /* where to start computing cksum */ + u8 flags; /* as defined above */ +}; + +/* 8 Bytes */ +struct mcp_kreq_ether_recv { + u32 addr_high; + u32 addr_low; +}; + +/* Commands */ + +#define MXGEFW_CMD_OFFSET 0xf80000 + +enum myri10ge_mcp_cmd_type { + MXGEFW_CMD_NONE = 0, + /* Reset the mcp, it is left in a safe state, waiting + * for the driver to set all its parameters */ + MXGEFW_CMD_RESET, + + /* get the version number of the current firmware.. + * (may be available in the eeprom strings..? */ + MXGEFW_GET_MCP_VERSION, + + /* Parameters which must be set by the driver before it can + * issue MXGEFW_CMD_ETHERNET_UP. They persist until the next + * MXGEFW_CMD_RESET is issued */ + + MXGEFW_CMD_SET_INTRQ_DMA, + MXGEFW_CMD_SET_BIG_BUFFER_SIZE, /* in bytes, power of 2 */ + MXGEFW_CMD_SET_SMALL_BUFFER_SIZE, /* in bytes */ + + /* Parameters which refer to lanai SRAM addresses where the + * driver must issue PIO writes for various things */ + + MXGEFW_CMD_GET_SEND_OFFSET, + MXGEFW_CMD_GET_SMALL_RX_OFFSET, + MXGEFW_CMD_GET_BIG_RX_OFFSET, + MXGEFW_CMD_GET_IRQ_ACK_OFFSET, + MXGEFW_CMD_GET_IRQ_DEASSERT_OFFSET, + + /* Parameters which refer to rings stored on the MCP, + * and whose size is controlled by the mcp */ + + MXGEFW_CMD_GET_SEND_RING_SIZE, /* in bytes */ + MXGEFW_CMD_GET_RX_RING_SIZE, /* in bytes */ + + /* Parameters which refer to rings stored in the host, + * and whose size is controlled by the host. Note that + * all must be physically contiguous and must contain + * a power of 2 number of entries. */ + + MXGEFW_CMD_SET_INTRQ_SIZE, /* in bytes */ + + /* command to bring ethernet interface up. Above parameters + * (plus mtu & mac address) must have been exchanged prior + * to issuing this command */ + MXGEFW_CMD_ETHERNET_UP, + + /* command to bring ethernet interface down. No further sends + * or receives may be processed until an MXGEFW_CMD_ETHERNET_UP + * is issued, and all interrupt queues must be flushed prior + * to ack'ing this command */ + + MXGEFW_CMD_ETHERNET_DOWN, + + /* commands the driver may issue live, without resetting + * the nic. Note that increasing the mtu "live" should + * only be done if the driver has already supplied buffers + * sufficiently large to handle the new mtu. Decreasing + * the mtu live is safe */ + + MXGEFW_CMD_SET_MTU, + MXGEFW_CMD_GET_INTR_COAL_DELAY_OFFSET, /* in microseconds */ + MXGEFW_CMD_SET_STATS_INTERVAL, /* in microseconds */ + MXGEFW_CMD_SET_STATS_DMA, + + MXGEFW_ENABLE_PROMISC, + MXGEFW_DISABLE_PROMISC, + MXGEFW_SET_MAC_ADDRESS, + + MXGEFW_ENABLE_FLOW_CONTROL, + MXGEFW_DISABLE_FLOW_CONTROL, + + /* do a DMA test + * data0,data1 = DMA address + * data2 = RDMA length (MSH), WDMA length (LSH) + * command return data = repetitions (MSH), 0.5-ms ticks (LSH) + */ + MXGEFW_DMA_TEST +}; + +enum myri10ge_mcp_cmd_status { + MXGEFW_CMD_OK = 0, + MXGEFW_CMD_UNKNOWN, + MXGEFW_CMD_ERROR_RANGE, + MXGEFW_CMD_ERROR_BUSY, + MXGEFW_CMD_ERROR_EMPTY, + MXGEFW_CMD_ERROR_CLOSED, + MXGEFW_CMD_ERROR_HASH_ERROR, + MXGEFW_CMD_ERROR_BAD_PORT, + MXGEFW_CMD_ERROR_RESOURCES +}; + +/* 40 Bytes */ +struct mcp_irq_data { + u32 send_done_count; + + u32 link_up; + u32 dropped_link_overflow; + u32 dropped_link_error_or_filtered; + u32 dropped_runt; + u32 dropped_overrun; + u32 dropped_no_small_buffer; + u32 dropped_no_big_buffer; + u32 rdma_tags_available; + + u8 tx_stopped; + u8 link_down; + u8 stats_updated; + u8 valid; +}; + +#endif /* __MYRI10GE_MCP_H__ */ diff --git a/drivers/net/myri10ge/myri10ge_mcp_gen_header.h b/drivers/net/myri10ge/myri10ge_mcp_gen_header.h new file mode 100644 index 000000000000..1d3a35f10789 --- /dev/null +++ b/drivers/net/myri10ge/myri10ge_mcp_gen_header.h @@ -0,0 +1,58 @@ +#ifndef __MYRI10GE_MCP_GEN_HEADER_H__ +#define __MYRI10GE_MCP_GEN_HEADER_H__ + +/* this file define a standard header used as a first entry point to + * exchange information between firmware/driver and driver. The + * header structure can be anywhere in the mcp. It will usually be in + * the .data section, because some fields needs to be initialized at + * compile time. + * The 32bit word at offset MX_HEADER_PTR_OFFSET in the mcp must + * contains the location of the header. + * + * Typically a MCP will start with the following: + * .text + * .space 52 ! to help catch MEMORY_INT errors + * bt start ! jump to real code + * nop + * .long _gen_mcp_header + * + * The source will have a definition like: + * + * mcp_gen_header_t gen_mcp_header = { + * .header_length = sizeof(mcp_gen_header_t), + * .mcp_type = MCP_TYPE_XXX, + * .version = "something $Id: mcp_gen_header.h,v 1.2 2006/05/13 10:04:35 bgoglin Exp $", + * .mcp_globals = (unsigned)&Globals + * }; + */ + +#define MCP_HEADER_PTR_OFFSET 0x3c + +#define MCP_TYPE_MX 0x4d582020 /* "MX " */ +#define MCP_TYPE_PCIE 0x70636965 /* "PCIE" pcie-only MCP */ +#define MCP_TYPE_ETH 0x45544820 /* "ETH " */ +#define MCP_TYPE_MCP0 0x4d435030 /* "MCP0" */ + +struct mcp_gen_header { + /* the first 4 fields are filled at compile time */ + unsigned header_length; + unsigned mcp_type; + char version[128]; + unsigned mcp_globals; /* pointer to mcp-type specific structure */ + + /* filled by the MCP at run-time */ + unsigned sram_size; + unsigned string_specs; /* either the original STRING_SPECS or a superset */ + unsigned string_specs_len; + + /* Fields above this comment are guaranteed to be present. + * + * Fields below this comment are extensions added in later versions + * of this struct, drivers should compare the header_length against + * offsetof(field) to check wether a given MCP implements them. + * + * Never remove any field. Keep everything naturally align. + */ +}; + +#endif /* __MYRI10GE_MCP_GEN_HEADER_H__ */ diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 563eeadbea46..151549a69ee0 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -1827,6 +1827,7 @@ #define PCI_VENDOR_ID_SAMSUNG 0x144d +#define PCI_VENDOR_ID_MYRICOM 0x14c1 #define PCI_VENDOR_ID_TITAN 0x14D2 #define PCI_DEVICE_ID_TITAN_010L 0x8001 -- cgit v1.2.3-71-gd317 From 4c0c2fd486b6598e37c77b5d81a08bc2d948aa7b Mon Sep 17 00:00:00 2001 From: Ayaz Abdulla Date: Thu, 25 May 2006 13:10:38 -0400 Subject: [PATCH] pci_ids: add new device ids This patch adds new device ids for MCP61 and MCP65 chips. Signed-Off-By: Ayaz Abdulla Signed-off-by: Jeff Garzik --- include/linux/pci_ids.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 151549a69ee0..dce2534ab7dc 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -1183,6 +1183,14 @@ #define PCI_DEVICE_ID_NVIDIA_QUADRO_FX_1100 0x034E #define PCI_DEVICE_ID_NVIDIA_NVENET_14 0x0372 #define PCI_DEVICE_ID_NVIDIA_NVENET_15 0x0373 +#define PCI_DEVICE_ID_NVIDIA_NVENET_16 0x03E5 +#define PCI_DEVICE_ID_NVIDIA_NVENET_17 0x03E6 +#define PCI_DEVICE_ID_NVIDIA_NVENET_18 0x03EE +#define PCI_DEVICE_ID_NVIDIA_NVENET_19 0x03EF +#define PCI_DEVICE_ID_NVIDIA_NVENET_20 0x0450 +#define PCI_DEVICE_ID_NVIDIA_NVENET_21 0x0451 +#define PCI_DEVICE_ID_NVIDIA_NVENET_22 0x0452 +#define PCI_DEVICE_ID_NVIDIA_NVENET_23 0x0453 #define PCI_VENDOR_ID_IMS 0x10e0 #define PCI_DEVICE_ID_IMS_TT128 0x9128 -- cgit v1.2.3-71-gd317 From 76ea4c7f4cd319dee35934ecab57745feae58fa5 Mon Sep 17 00:00:00 2001 From: Daniel Drake Date: Thu, 1 Jun 2006 15:34:26 +0100 Subject: [PATCH] softmac: complete shared key authentication This patch finishes of the partially-complete shared key authentication implementation in softmac. The complication here is that we need to encrypt a management frame during the authentication process. I don't think there are any other scenarios where this would have to happen. To get around this without causing too many headaches, we decided to just use software encryption for this frame. The softmac config option now selects IEEE80211_CRYPT_WEP so that we can ensure this available. This also involved a modification to some otherwise unused ieee80211 API. Signed-off-by: Daniel Drake Acked-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/ieee80211.h | 3 ++- net/ieee80211/ieee80211_tx.c | 25 ++++++++++++----- net/ieee80211/softmac/Kconfig | 1 + net/ieee80211/softmac/ieee80211softmac_auth.c | 12 +++++---- net/ieee80211/softmac/ieee80211softmac_io.c | 39 +++++++++++++++------------ 5 files changed, 51 insertions(+), 29 deletions(-) (limited to 'include') diff --git a/include/net/ieee80211.h b/include/net/ieee80211.h index 293e920ca59d..d5147770ad47 100644 --- a/include/net/ieee80211.h +++ b/include/net/ieee80211.h @@ -1247,7 +1247,8 @@ extern int ieee80211_set_encryption(struct ieee80211_device *ieee); extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev); extern void ieee80211_txb_free(struct ieee80211_txb *); extern int ieee80211_tx_frame(struct ieee80211_device *ieee, - struct ieee80211_hdr *frame, int len); + struct ieee80211_hdr *frame, int hdr_len, + int total_len, int encrypt_mpdu); /* ieee80211_rx.c */ extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb, diff --git a/net/ieee80211/ieee80211_tx.c b/net/ieee80211/ieee80211_tx.c index 233d527c6953..6a5de1b84459 100644 --- a/net/ieee80211/ieee80211_tx.c +++ b/net/ieee80211/ieee80211_tx.c @@ -555,7 +555,8 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) /* Incoming 802.11 strucure is converted to a TXB * a block of 802.11 fragment packets (stored as skbs) */ int ieee80211_tx_frame(struct ieee80211_device *ieee, - struct ieee80211_hdr *frame, int len) + struct ieee80211_hdr *frame, int hdr_len, int total_len, + int encrypt_mpdu) { struct ieee80211_txb *txb = NULL; unsigned long flags; @@ -565,6 +566,9 @@ int ieee80211_tx_frame(struct ieee80211_device *ieee, spin_lock_irqsave(&ieee->lock, flags); + if (encrypt_mpdu && !ieee->sec.encrypt) + encrypt_mpdu = 0; + /* If there is no driver handler to take the TXB, dont' bother * creating it... */ if (!ieee->hard_start_xmit) { @@ -572,32 +576,41 @@ int ieee80211_tx_frame(struct ieee80211_device *ieee, goto success; } - if (unlikely(len < 24)) { + if (unlikely(total_len < 24)) { printk(KERN_WARNING "%s: skb too small (%d).\n", - ieee->dev->name, len); + ieee->dev->name, total_len); goto success; } + if (encrypt_mpdu) + frame->frame_ctl |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); + /* When we allocate the TXB we allocate enough space for the reserve * and full fragment bytes (bytes_per_frag doesn't include prefix, * postfix, header, FCS, etc.) */ - txb = ieee80211_alloc_txb(1, len, ieee->tx_headroom, GFP_ATOMIC); + txb = ieee80211_alloc_txb(1, total_len, ieee->tx_headroom, GFP_ATOMIC); if (unlikely(!txb)) { printk(KERN_WARNING "%s: Could not allocate TXB\n", ieee->dev->name); goto failed; } txb->encrypted = 0; - txb->payload_size = len; + txb->payload_size = total_len; skb_frag = txb->fragments[0]; - memcpy(skb_put(skb_frag, len), frame, len); + memcpy(skb_put(skb_frag, total_len), frame, total_len); if (ieee->config & (CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS)) skb_put(skb_frag, 4); + /* To avoid overcomplicating things, we do the corner-case frame + * encryption in software. The only real situation where encryption is + * needed here is during software-based shared key authentication. */ + if (encrypt_mpdu) + ieee80211_encrypt_fragment(ieee, skb_frag, hdr_len); + success: spin_unlock_irqrestore(&ieee->lock, flags); diff --git a/net/ieee80211/softmac/Kconfig b/net/ieee80211/softmac/Kconfig index f2a27cc6ecb1..2811651cb134 100644 --- a/net/ieee80211/softmac/Kconfig +++ b/net/ieee80211/softmac/Kconfig @@ -2,6 +2,7 @@ config IEEE80211_SOFTMAC tristate "Software MAC add-on to the IEEE 802.11 networking stack" depends on IEEE80211 && EXPERIMENTAL select WIRELESS_EXT + select IEEE80211_CRYPT_WEP ---help--- This option enables the hardware independent software MAC addon for the IEEE 802.11 networking stack. diff --git a/net/ieee80211/softmac/ieee80211softmac_auth.c b/net/ieee80211/softmac/ieee80211softmac_auth.c index 084b6211f293..90b8484e509b 100644 --- a/net/ieee80211/softmac/ieee80211softmac_auth.c +++ b/net/ieee80211/softmac/ieee80211softmac_auth.c @@ -107,6 +107,7 @@ ieee80211softmac_auth_queue(void *data) printkl(KERN_WARNING PFX "Authentication timed out with "MAC_FMT"\n", MAC_ARG(net->bssid)); /* Remove this item from the queue */ spin_lock_irqsave(&mac->lock, flags); + net->authenticating = 0; ieee80211softmac_call_events_locked(mac, IEEE80211SOFTMAC_EVENT_AUTH_TIMEOUT, net); cancel_delayed_work(&auth->work); /* just to make sure... */ list_del(&auth->list); @@ -212,13 +213,13 @@ ieee80211softmac_auth_resp(struct net_device *dev, struct ieee80211_auth *auth) aq->state = IEEE80211SOFTMAC_AUTH_SHARED_RESPONSE; spin_unlock_irqrestore(&mac->lock, flags); - /* Switch to correct channel for this network */ - mac->set_channel(mac->dev, net->channel); - - /* Send our response (How to encrypt?) */ + /* Send our response */ ieee80211softmac_send_mgt_frame(mac, aq->net, IEEE80211_STYPE_AUTH, aq->state); - break; + return 0; case IEEE80211SOFTMAC_AUTH_SHARED_PASS: + kfree(net->challenge); + net->challenge = NULL; + net->challenge_len = 0; /* Check the status code of the response */ switch(auth->status) { case WLAN_STATUS_SUCCESS: @@ -229,6 +230,7 @@ ieee80211softmac_auth_resp(struct net_device *dev, struct ieee80211_auth *auth) spin_unlock_irqrestore(&mac->lock, flags); printkl(KERN_NOTICE PFX "Shared Key Authentication completed with "MAC_FMT"\n", MAC_ARG(net->bssid)); + ieee80211softmac_call_events(mac, IEEE80211SOFTMAC_EVENT_AUTHENTICATED, net); break; default: printkl(KERN_NOTICE PFX "Shared Key Authentication with "MAC_FMT" failed, error code: %i\n", diff --git a/net/ieee80211/softmac/ieee80211softmac_io.c b/net/ieee80211/softmac/ieee80211softmac_io.c index 7b9e78d39598..44f51175a2fc 100644 --- a/net/ieee80211/softmac/ieee80211softmac_io.c +++ b/net/ieee80211/softmac/ieee80211softmac_io.c @@ -268,26 +268,27 @@ ieee80211softmac_reassoc_req(struct ieee80211_reassoc_request **pkt, static u32 ieee80211softmac_auth(struct ieee80211_auth **pkt, struct ieee80211softmac_device *mac, struct ieee80211softmac_network *net, - u16 transaction, u16 status) + u16 transaction, u16 status, int *encrypt_mpdu) { u8 *data; + int auth_mode = mac->ieee->sec.auth_mode; + int is_shared_response = (auth_mode == WLAN_AUTH_SHARED_KEY + && transaction == IEEE80211SOFTMAC_AUTH_SHARED_RESPONSE); + /* Allocate Packet */ (*pkt) = (struct ieee80211_auth *)ieee80211softmac_alloc_mgt( 2 + /* Auth Algorithm */ 2 + /* Auth Transaction Seq */ 2 + /* Status Code */ /* Challenge Text IE */ - mac->ieee->open_wep ? 0 : - 1 + 1 + WLAN_AUTH_CHALLENGE_LEN - ); + is_shared_response ? 0 : 1 + 1 + net->challenge_len + ); if (unlikely((*pkt) == NULL)) return 0; ieee80211softmac_hdr_3addr(mac, &((*pkt)->header), IEEE80211_STYPE_AUTH, net->bssid, net->bssid); /* Algorithm */ - (*pkt)->algorithm = mac->ieee->open_wep ? - cpu_to_le16(WLAN_AUTH_OPEN) : - cpu_to_le16(WLAN_AUTH_SHARED_KEY); + (*pkt)->algorithm = cpu_to_le16(auth_mode); /* Transaction */ (*pkt)->transaction = cpu_to_le16(transaction); /* Status */ @@ -295,18 +296,20 @@ ieee80211softmac_auth(struct ieee80211_auth **pkt, data = (u8 *)(*pkt)->info_element; /* Challenge Text */ - if(!mac->ieee->open_wep){ + if (is_shared_response) { *data = MFIE_TYPE_CHALLENGE; data++; /* Copy the challenge in */ - // *data = challenge length - // data += sizeof(u16); - // memcpy(data, challenge, challenge length); - // data += challenge length; - - /* Add the full size to the packet length */ - } + *data = net->challenge_len; + data++; + memcpy(data, net->challenge, net->challenge_len); + data += net->challenge_len; + + /* Make sure this frame gets encrypted with the shared key */ + *encrypt_mpdu = 1; + } else + *encrypt_mpdu = 0; /* Return the packet size */ return (data - (u8 *)(*pkt)); @@ -396,6 +399,7 @@ ieee80211softmac_send_mgt_frame(struct ieee80211softmac_device *mac, { void *pkt = NULL; u32 pkt_size = 0; + int encrypt_mpdu = 0; switch(type) { case IEEE80211_STYPE_ASSOC_REQ: @@ -405,7 +409,7 @@ ieee80211softmac_send_mgt_frame(struct ieee80211softmac_device *mac, pkt_size = ieee80211softmac_reassoc_req((struct ieee80211_reassoc_request **)(&pkt), mac, (struct ieee80211softmac_network *)ptrarg); break; case IEEE80211_STYPE_AUTH: - pkt_size = ieee80211softmac_auth((struct ieee80211_auth **)(&pkt), mac, (struct ieee80211softmac_network *)ptrarg, (u16)(arg & 0xFFFF), (u16) (arg >> 16)); + pkt_size = ieee80211softmac_auth((struct ieee80211_auth **)(&pkt), mac, (struct ieee80211softmac_network *)ptrarg, (u16)(arg & 0xFFFF), (u16) (arg >> 16), &encrypt_mpdu); break; case IEEE80211_STYPE_DISASSOC: case IEEE80211_STYPE_DEAUTH: @@ -434,7 +438,8 @@ ieee80211softmac_send_mgt_frame(struct ieee80211softmac_device *mac, * or get rid of it alltogether? * Does this work for you now? */ - ieee80211_tx_frame(mac->ieee, (struct ieee80211_hdr *)pkt, pkt_size); + ieee80211_tx_frame(mac->ieee, (struct ieee80211_hdr *)pkt, + IEEE80211_3ADDR_LEN, pkt_size, encrypt_mpdu); kfree(pkt); return 0; -- cgit v1.2.3-71-gd317 From 6ae15df16ef3dc3f5f043e94bb2cd4aa6c7f2aa8 Mon Sep 17 00:00:00 2001 From: Daniel Drake Date: Thu, 1 Jun 2006 15:37:22 +0100 Subject: [PATCH] softmac: Fix handling of authentication failure My router blew up earlier, but exhibited some interesting behaviour during its dying moments. It was broadcasting beacons but wouldn't respond to any authentication requests. I noticed that softmac wasn't playing nice with this, as I couldn't make it try to connect to other networks after it had timed out authenticating to my ill router. To resolve this, I modified the softmac event/notify API to pass the event code to the callback, so that callbacks being notified from IEEE80211SOFTMAC_EVENT_ANY masks can make some judgement. In this case, the ieee80211softmac_assoc callback needs to make a decision based upon whether the association passed or failed. Signed-off-by: Daniel Drake Acked-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/ieee80211softmac.h | 2 +- net/ieee80211/softmac/ieee80211softmac_assoc.c | 22 +++++++++++++++++++--- net/ieee80211/softmac/ieee80211softmac_event.c | 5 ++++- 3 files changed, 24 insertions(+), 5 deletions(-) (limited to 'include') diff --git a/include/net/ieee80211softmac.h b/include/net/ieee80211softmac.h index 703463a8828b..7a483ab4022f 100644 --- a/include/net/ieee80211softmac.h +++ b/include/net/ieee80211softmac.h @@ -310,7 +310,7 @@ extern void ieee80211softmac_stop(struct net_device *dev); * - context set to the context data you want passed * The return value is 0, or an error. */ -typedef void (*notify_function_ptr)(struct net_device *dev, void *context); +typedef void (*notify_function_ptr)(struct net_device *dev, int event_type, void *context); #define ieee80211softmac_notify(dev, event, fun, context) ieee80211softmac_notify_gfp(dev, event, fun, context, GFP_KERNEL); #define ieee80211softmac_notify_atomic(dev, event, fun, context) ieee80211softmac_notify_gfp(dev, event, fun, context, GFP_ATOMIC); diff --git a/net/ieee80211/softmac/ieee80211softmac_assoc.c b/net/ieee80211/softmac/ieee80211softmac_assoc.c index 5d90b9a6ee50..5e9a90651d04 100644 --- a/net/ieee80211/softmac/ieee80211softmac_assoc.c +++ b/net/ieee80211/softmac/ieee80211softmac_assoc.c @@ -164,12 +164,28 @@ network_matches_request(struct ieee80211softmac_device *mac, struct ieee80211_ne } static void -ieee80211softmac_assoc_notify(struct net_device *dev, void *context) +ieee80211softmac_assoc_notify_scan(struct net_device *dev, int event_type, void *context) { struct ieee80211softmac_device *mac = ieee80211_priv(dev); ieee80211softmac_assoc_work((void*)mac); } +static void +ieee80211softmac_assoc_notify_auth(struct net_device *dev, int event_type, void *context) +{ + struct ieee80211softmac_device *mac = ieee80211_priv(dev); + + switch (event_type) { + case IEEE80211SOFTMAC_EVENT_AUTHENTICATED: + ieee80211softmac_assoc_work((void*)mac); + break; + case IEEE80211SOFTMAC_EVENT_AUTH_FAILED: + case IEEE80211SOFTMAC_EVENT_AUTH_TIMEOUT: + ieee80211softmac_disassoc(mac); + break; + } +} + /* This function is called to handle userspace requests (asynchronously) */ void ieee80211softmac_assoc_work(void *d) @@ -249,7 +265,7 @@ ieee80211softmac_assoc_work(void *d) * Maybe we can hope to have more memory after scanning finishes ;) */ dprintk(KERN_INFO PFX "Associate: Scanning for networks first.\n"); - ieee80211softmac_notify(mac->dev, IEEE80211SOFTMAC_EVENT_SCAN_FINISHED, ieee80211softmac_assoc_notify, NULL); + ieee80211softmac_notify(mac->dev, IEEE80211SOFTMAC_EVENT_SCAN_FINISHED, ieee80211softmac_assoc_notify_scan, NULL); if (ieee80211softmac_start_scan(mac)) dprintk(KERN_INFO PFX "Associate: failed to initiate scan. Is device up?\n"); return; @@ -284,7 +300,7 @@ ieee80211softmac_assoc_work(void *d) * otherwise adding the notification would be racy. */ if (!ieee80211softmac_auth_req(mac, found)) { dprintk(KERN_INFO PFX "cannot associate without being authenticated, requested authentication\n"); - ieee80211softmac_notify_internal(mac, IEEE80211SOFTMAC_EVENT_ANY, found, ieee80211softmac_assoc_notify, NULL, GFP_KERNEL); + ieee80211softmac_notify_internal(mac, IEEE80211SOFTMAC_EVENT_ANY, found, ieee80211softmac_assoc_notify_auth, NULL, GFP_KERNEL); } else { printkl(KERN_WARNING PFX "Not authenticated, but requesting authentication failed. Giving up to associate\n"); ieee80211softmac_call_events(mac, IEEE80211SOFTMAC_EVENT_ASSOCIATE_FAILED, found); diff --git a/net/ieee80211/softmac/ieee80211softmac_event.c b/net/ieee80211/softmac/ieee80211softmac_event.c index 4b153f7cc96c..f34fa2ef666b 100644 --- a/net/ieee80211/softmac/ieee80211softmac_event.c +++ b/net/ieee80211/softmac/ieee80211softmac_event.c @@ -78,7 +78,7 @@ ieee80211softmac_notify_callback(void *d) struct ieee80211softmac_event event = *(struct ieee80211softmac_event*) d; kfree(d); - event.fun(event.mac->dev, event.context); + event.fun(event.mac->dev, event.event_type, event.context); } int @@ -167,6 +167,9 @@ ieee80211softmac_call_events_locked(struct ieee80211softmac_device *mac, int eve if ((eventptr->event_type == event || eventptr->event_type == -1) && (eventptr->event_context == NULL || eventptr->event_context == event_ctx)) { list_del(&eventptr->list); + /* User may have subscribed to ANY event, so + * we tell them which event triggered it. */ + eventptr->event_type = event; schedule_work(&eventptr->work); } } -- cgit v1.2.3-71-gd317