From 77d21f23a1e4db8639e3916547c903a3b3c7a07c Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Fri, 3 May 2013 14:49:41 +0000 Subject: [PATCH 01/11] virtio: don't expose u16 in userspace api Programs using virtio headers outside of kernel will no longer build because u16 type does not exist in userspace. All user ABI must use __u16 typedef instead. Bug introduce by: commit 986a4f4d452dec004697f667439d27c3fda9c928 Author: Jason Wang Date: Fri Dec 7 07:04:56 2012 +0000 virtio_net: multiqueue support Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- include/uapi/linux/virtio_net.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/uapi/linux/virtio_net.h b/include/uapi/linux/virtio_net.h index a5a8c88753b9..c520203fac2f 100644 --- a/include/uapi/linux/virtio_net.h +++ b/include/uapi/linux/virtio_net.h @@ -191,7 +191,7 @@ struct virtio_net_ctrl_mac { * specified. */ struct virtio_net_ctrl_mq { - u16 virtqueue_pairs; + __u16 virtqueue_pairs; }; #define VIRTIO_NET_CTRL_MQ 4 From 13f85203e1060da83d9ec1c1c5a63343eaab8de4 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Fri, 3 May 2013 17:19:01 +0000 Subject: [PATCH 02/11] net/eth/ibmveth: Fixup retrieval of MAC address Some ancient pHyp versions used to create a 8 bytes local-mac-address property in the device-tree instead of a 6 bytes one for veth. The Linux driver code to deal with that is an insane hack which also happens to break with some choices of MAC addresses in qemu by testing for a bit in the address rather than just looking at the size of the property. Sanitize this by doing the latter instead. Signed-off-by: Benjamin Herrenschmidt CC: Signed-off-by: David S. Miller --- drivers/net/ethernet/ibm/ibmveth.c | 23 ++++++++++------------- 1 file changed, 10 insertions(+), 13 deletions(-) diff --git a/drivers/net/ethernet/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c index 302d59401065..70fd55968844 100644 --- a/drivers/net/ethernet/ibm/ibmveth.c +++ b/drivers/net/ethernet/ibm/ibmveth.c @@ -1322,7 +1322,7 @@ static const struct net_device_ops ibmveth_netdev_ops = { static int ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id) { - int rc, i; + int rc, i, mac_len; struct net_device *netdev; struct ibmveth_adapter *adapter; unsigned char *mac_addr_p; @@ -1332,11 +1332,19 @@ static int ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id) dev->unit_address); mac_addr_p = (unsigned char *)vio_get_attribute(dev, VETH_MAC_ADDR, - NULL); + &mac_len); if (!mac_addr_p) { dev_err(&dev->dev, "Can't find VETH_MAC_ADDR attribute\n"); return -EINVAL; } + /* Workaround for old/broken pHyp */ + if (mac_len == 8) + mac_addr_p += 2; + else if (mac_len != 6) { + dev_err(&dev->dev, "VETH_MAC_ADDR attribute wrong len %d\n", + mac_len); + return -EINVAL; + } mcastFilterSize_p = (unsigned int *)vio_get_attribute(dev, VETH_MCAST_FILTER_SIZE, NULL); @@ -1361,17 +1369,6 @@ static int ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id) netif_napi_add(netdev, &adapter->napi, ibmveth_poll, 16); - /* - * Some older boxes running PHYP non-natively have an OF that returns - * a 8-byte local-mac-address field (and the first 2 bytes have to be - * ignored) while newer boxes' OF return a 6-byte field. Note that - * IEEE 1275 specifies that local-mac-address must be a 6-byte field. - * The RPA doc specifies that the first byte must be 10b, so we'll - * just look for it to solve this 8 vs. 6 byte field issue - */ - if ((*mac_addr_p & 0x3) != 0x02) - mac_addr_p += 2; - adapter->mac_addr = 0; memcpy(&adapter->mac_addr, mac_addr_p, 6); From efeaa5550e4bfd335396415958fe3615530e5d5c Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 3 May 2013 19:12:45 +0000 Subject: [PATCH 03/11] tcp: do not expire TCP fastopen cookies TCP metric cache expires entries after one hour. This probably make sense for TCP RTT/RTTVAR/CWND, but not for TCP fastopen cookies. Its better to try previous cookie. If it appears to be obsolete, server will send us new cookie anyway. Signed-off-by: Eric Dumazet Cc: Yuchung Cheng Cc: Neal Cardwell Signed-off-by: David S. Miller --- net/ipv4/tcp_metrics.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/net/ipv4/tcp_metrics.c b/net/ipv4/tcp_metrics.c index f696d7c2e9fa..f6a005c485a9 100644 --- a/net/ipv4/tcp_metrics.c +++ b/net/ipv4/tcp_metrics.c @@ -96,7 +96,8 @@ struct tcpm_hash_bucket { static DEFINE_SPINLOCK(tcp_metrics_lock); -static void tcpm_suck_dst(struct tcp_metrics_block *tm, struct dst_entry *dst) +static void tcpm_suck_dst(struct tcp_metrics_block *tm, struct dst_entry *dst, + bool fastopen_clear) { u32 val; @@ -122,9 +123,11 @@ static void tcpm_suck_dst(struct tcp_metrics_block *tm, struct dst_entry *dst) tm->tcpm_vals[TCP_METRIC_REORDERING] = dst_metric_raw(dst, RTAX_REORDERING); tm->tcpm_ts = 0; tm->tcpm_ts_stamp = 0; - tm->tcpm_fastopen.mss = 0; - tm->tcpm_fastopen.syn_loss = 0; - tm->tcpm_fastopen.cookie.len = 0; + if (fastopen_clear) { + tm->tcpm_fastopen.mss = 0; + tm->tcpm_fastopen.syn_loss = 0; + tm->tcpm_fastopen.cookie.len = 0; + } } static struct tcp_metrics_block *tcpm_new(struct dst_entry *dst, @@ -154,7 +157,7 @@ static struct tcp_metrics_block *tcpm_new(struct dst_entry *dst, } tm->tcpm_addr = *addr; - tcpm_suck_dst(tm, dst); + tcpm_suck_dst(tm, dst, true); if (likely(!reclaim)) { tm->tcpm_next = net->ipv4.tcp_metrics_hash[hash].chain; @@ -171,7 +174,7 @@ out_unlock: static void tcpm_check_stamp(struct tcp_metrics_block *tm, struct dst_entry *dst) { if (tm && unlikely(time_after(jiffies, tm->tcpm_stamp + TCP_METRICS_TIMEOUT))) - tcpm_suck_dst(tm, dst); + tcpm_suck_dst(tm, dst, false); } #define TCP_METRICS_RECLAIM_DEPTH 5 From b56141ab34e2c3e2d7960cea12c20c99530c0c76 Mon Sep 17 00:00:00 2001 From: Konstantin Khlebnikov Date: Sun, 5 May 2013 04:56:22 +0000 Subject: [PATCH 04/11] net: frag, fix race conditions in LRU list maintenance This patch fixes race between inet_frag_lru_move() and inet_frag_lru_add() which was introduced in commit 3ef0eb0db4bf92c6d2510fe5c4dc51852746f206 ("net: frag, move LRU list maintenance outside of rwlock") One cpu already added new fragment queue into hash but not into LRU. Other cpu found it in hash and tries to move it to the end of LRU. This leads to NULL pointer dereference inside of list_move_tail(). Another possible race condition is between inet_frag_lru_move() and inet_frag_lru_del(): move can happens after deletion. This patch initializes LRU list head before adding fragment into hash and inet_frag_lru_move() doesn't touches it if it's empty. I saw this kernel oops two times in a couple of days. [119482.128853] BUG: unable to handle kernel NULL pointer dereference at (null) [119482.132693] IP: [] __list_del_entry+0x29/0xd0 [119482.136456] PGD 2148f6067 PUD 215ab9067 PMD 0 [119482.140221] Oops: 0000 [#1] SMP [119482.144008] Modules linked in: vfat msdos fat 8021q fuse nfsd auth_rpcgss nfs_acl nfs lockd sunrpc ppp_async ppp_generic bridge slhc stp llc w83627ehf hwmon_vid snd_hda_codec_hdmi snd_hda_codec_realtek kvm_amd k10temp kvm snd_hda_intel snd_hda_codec edac_core radeon snd_hwdep ath9k snd_pcm ath9k_common snd_page_alloc ath9k_hw snd_timer snd soundcore drm_kms_helper ath ttm r8169 mii [119482.152692] CPU 3 [119482.152721] Pid: 20, comm: ksoftirqd/3 Not tainted 3.9.0-zurg-00001-g9f95269 #132 To Be Filled By O.E.M. To Be Filled By O.E.M./RS880D [119482.161478] RIP: 0010:[] [] __list_del_entry+0x29/0xd0 [119482.166004] RSP: 0018:ffff880216d5db58 EFLAGS: 00010207 [119482.170568] RAX: 0000000000000000 RBX: ffff88020882b9c0 RCX: dead000000200200 [119482.175189] RDX: 0000000000000000 RSI: 0000000000000880 RDI: ffff88020882ba00 [119482.179860] RBP: ffff880216d5db58 R08: ffffffff8155c7f0 R09: 0000000000000014 [119482.184570] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88020882ba00 [119482.189337] R13: ffffffff81c8d780 R14: ffff880204357f00 R15: 00000000000005a0 [119482.194140] FS: 00007f58124dc700(0000) GS:ffff88021fcc0000(0000) knlGS:0000000000000000 [119482.198928] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [119482.203711] CR2: 0000000000000000 CR3: 00000002155f0000 CR4: 00000000000007e0 [119482.208533] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [119482.213371] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [119482.218221] Process ksoftirqd/3 (pid: 20, threadinfo ffff880216d5c000, task ffff880216d3a9a0) [119482.223113] Stack: [119482.228004] ffff880216d5dbd8 ffffffff8155dcda 0000000000000000 ffff000200000001 [119482.233038] ffff8802153c1f00 ffff880000289440 ffff880200000014 ffff88007bc72000 [119482.238083] 00000000000079d5 ffff88007bc72f44 ffffffff00000002 ffff880204357f00 [119482.243090] Call Trace: [119482.248009] [] ip_defrag+0x8fa/0xd10 [119482.252921] [] ipv4_conntrack_defrag+0x83/0xe0 [119482.257803] [] nf_iterate+0x8b/0xa0 [119482.262658] [] ? inet_del_offload+0x40/0x40 [119482.267527] [] nf_hook_slow+0x74/0x130 [119482.272412] [] ? inet_del_offload+0x40/0x40 [119482.277302] [] ip_rcv+0x268/0x320 [119482.282147] [] __netif_receive_skb_core+0x612/0x7e0 [119482.286998] [] __netif_receive_skb+0x18/0x60 [119482.291826] [] process_backlog+0xa0/0x160 [119482.296648] [] net_rx_action+0x139/0x220 [119482.301403] [] __do_softirq+0xe7/0x220 [119482.306103] [] run_ksoftirqd+0x28/0x40 [119482.310809] [] smpboot_thread_fn+0xff/0x1a0 [119482.315515] [] ? lg_local_lock_cpu+0x40/0x40 [119482.320219] [] kthread+0xc0/0xd0 [119482.324858] [] ? insert_kthread_work+0x40/0x40 [119482.329460] [] ret_from_fork+0x7c/0xb0 [119482.334057] [] ? insert_kthread_work+0x40/0x40 [119482.338661] Code: 00 00 55 48 8b 17 48 b9 00 01 10 00 00 00 ad de 48 8b 47 08 48 89 e5 48 39 ca 74 29 48 b9 00 02 20 00 00 00 ad de 48 39 c8 74 7a <4c> 8b 00 4c 39 c7 75 53 4c 8b 42 08 4c 39 c7 75 2b 48 89 42 08 [119482.343787] RIP [] __list_del_entry+0x29/0xd0 [119482.348675] RSP [119482.353493] CR2: 0000000000000000 Oops happened on this path: ip_defrag() -> ip_frag_queue() -> inet_frag_lru_move() -> list_move_tail() -> __list_del_entry() Signed-off-by: Konstantin Khlebnikov Cc: Jesper Dangaard Brouer Cc: Florian Westphal Cc: Eric Dumazet Cc: David S. Miller Acked-by: Florian Westphal Signed-off-by: Jesper Dangaard Brouer Signed-off-by: David S. Miller --- include/net/inet_frag.h | 5 +++-- net/ipv4/inet_fragment.c | 1 + 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h index 4182c9be8bb5..bfcbc0017950 100644 --- a/include/net/inet_frag.h +++ b/include/net/inet_frag.h @@ -141,14 +141,15 @@ static inline int sum_frag_mem_limit(struct netns_frags *nf) static inline void inet_frag_lru_move(struct inet_frag_queue *q) { spin_lock(&q->net->lru_lock); - list_move_tail(&q->lru_list, &q->net->lru_list); + if (!list_empty(&q->lru_list)) + list_move_tail(&q->lru_list, &q->net->lru_list); spin_unlock(&q->net->lru_lock); } static inline void inet_frag_lru_del(struct inet_frag_queue *q) { spin_lock(&q->net->lru_lock); - list_del(&q->lru_list); + list_del_init(&q->lru_list); q->net->nqueues--; spin_unlock(&q->net->lru_lock); } diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c index e97d66a1fdde..7e06641e36ae 100644 --- a/net/ipv4/inet_fragment.c +++ b/net/ipv4/inet_fragment.c @@ -305,6 +305,7 @@ static struct inet_frag_queue *inet_frag_alloc(struct netns_frags *nf, setup_timer(&q->timer, f->frag_expire, (unsigned long)q); spin_lock_init(&q->lock); atomic_set(&q->refcnt, 1); + INIT_LIST_HEAD(&q->lru_list); return q; } From 0020356355192cbaf6d315515e6c95bd09618c3b Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 5 May 2013 16:03:46 +0000 Subject: [PATCH 05/11] fib_trie: no need to delay vfree() Now that vfree() can be called from interrupt contexts, there's no need to play games with schedule_work() to escape calling vfree() from RCU callbacks. Signed-off-by: Al Viro Signed-off-by: David S. Miller --- net/ipv4/fib_trie.c | 13 ++----------- 1 file changed, 2 insertions(+), 11 deletions(-) diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index ff06b7543d9f..49616fed9340 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -125,7 +125,6 @@ struct tnode { unsigned int empty_children; /* KEYLENGTH bits needed */ union { struct rcu_head rcu; - struct work_struct work; struct tnode *tnode_free; }; struct rt_trie_node __rcu *child[0]; @@ -383,12 +382,6 @@ static struct tnode *tnode_alloc(size_t size) return vzalloc(size); } -static void __tnode_vfree(struct work_struct *arg) -{ - struct tnode *tn = container_of(arg, struct tnode, work); - vfree(tn); -} - static void __tnode_free_rcu(struct rcu_head *head) { struct tnode *tn = container_of(head, struct tnode, rcu); @@ -397,10 +390,8 @@ static void __tnode_free_rcu(struct rcu_head *head) if (size <= PAGE_SIZE) kfree(tn); - else { - INIT_WORK(&tn->work, __tnode_vfree); - schedule_work(&tn->work); - } + else + vfree(tn); } static inline void tnode_free(struct tnode *tn) From 243198d09f535f5cd74114f1b779c3da25bc70c8 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 5 May 2013 16:05:55 +0000 Subject: [PATCH 06/11] rps_dev_flow_table_release(): no need to delay vfree() The same story as with fib_trie patch - vfree() from RCU callbacks is legitimate now. Signed-off-by: Al Viro Signed-off-by: David S. Miller --- include/linux/netdevice.h | 1 - net/core/net-sysfs.c | 12 +----------- 2 files changed, 1 insertion(+), 12 deletions(-) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index f8898a435dc5..a94a5a0ab122 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -593,7 +593,6 @@ struct rps_dev_flow { struct rps_dev_flow_table { unsigned int mask; struct rcu_head rcu; - struct work_struct free_work; struct rps_dev_flow flows[0]; }; #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \ diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index 7427ab5e27d8..981fed397d1d 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -606,21 +606,11 @@ static ssize_t show_rps_dev_flow_table_cnt(struct netdev_rx_queue *queue, return sprintf(buf, "%lu\n", val); } -static void rps_dev_flow_table_release_work(struct work_struct *work) -{ - struct rps_dev_flow_table *table = container_of(work, - struct rps_dev_flow_table, free_work); - - vfree(table); -} - static void rps_dev_flow_table_release(struct rcu_head *rcu) { struct rps_dev_flow_table *table = container_of(rcu, struct rps_dev_flow_table, rcu); - - INIT_WORK(&table->free_work, rps_dev_flow_table_release_work); - schedule_work(&table->free_work); + vfree(table); } static ssize_t store_rps_dev_flow_table_cnt(struct netdev_rx_queue *queue, From a3dbbc2bab8d9a6e55fc0af3906d1dddbc0c531e Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 6 May 2013 02:15:13 +0000 Subject: [PATCH 07/11] netpoll: inverted down_trylock() test The return value is reversed from mutex_trylock(). Signed-off-by: Dan Carpenter Signed-off-by: David S. Miller --- net/core/netpoll.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/netpoll.c b/net/core/netpoll.c index a5802a8b652f..cec074be8c43 100644 --- a/net/core/netpoll.c +++ b/net/core/netpoll.c @@ -206,7 +206,7 @@ static void netpoll_poll_dev(struct net_device *dev) * the dev_open/close paths use this to block netpoll activity * while changing device state */ - if (!down_trylock(&ni->dev_lock)) + if (down_trylock(&ni->dev_lock)) return; if (!netif_running(dev)) { From c81400be716aa4c76f6ebf339ba94358dbbf6da6 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Thu, 2 May 2013 11:10:22 +0000 Subject: [PATCH 08/11] 3c59x: fix freeing nonexistent resource on driver unload When unloading the driver that drives an EISA board, a message similar to the following one is displayed: Trying to free nonexistent resource <0000000000013000-000000000001301f> Then an user is unable to reload the driver because the resource it requested in the previous load hasn't been freed. This happens most probably due to a typo in vortex_eisa_remove() which calls release_region() with 'dev->base_addr' instead of 'edev->base_addr'... Reported-by: Matthew Whitehead Tested-by: Matthew Whitehead Signed-off-by: Sergei Shtylyov Signed-off-by: David S. Miller --- drivers/net/ethernet/3com/3c59x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/3com/3c59x.c b/drivers/net/ethernet/3com/3c59x.c index 1928e2001587..de570a8f8967 100644 --- a/drivers/net/ethernet/3com/3c59x.c +++ b/drivers/net/ethernet/3com/3c59x.c @@ -951,7 +951,7 @@ static int vortex_eisa_remove(struct device *device) unregister_netdev(dev); iowrite16(TotalReset|0x14, ioaddr + EL3_CMD); - release_region(dev->base_addr, VORTEX_TOTAL_SIZE); + release_region(edev->base_addr, VORTEX_TOTAL_SIZE); free_netdev(dev); return 0; From ac718b69301c7c07cd0d858570f76a0e1c4c8726 Mon Sep 17 00:00:00 2001 From: hayeswang Date: Thu, 2 May 2013 16:01:25 +0000 Subject: [PATCH 09/11] net/usb: new driver for RTL8152 Add new driver for supporting Realtek RTL8152 Based USB 2.0 Ethernet Adapters Signed-off-by: Hayes Wang Cc: Realtek linux nic maintainers Signed-off-by: David S. Miller --- drivers/net/usb/Kconfig | 11 + drivers/net/usb/Makefile | 1 + drivers/net/usb/cdc_ether.c | 10 + drivers/net/usb/r8152.c | 1767 +++++++++++++++++++++++++++++++++++ 4 files changed, 1789 insertions(+) create mode 100644 drivers/net/usb/r8152.c diff --git a/drivers/net/usb/Kconfig b/drivers/net/usb/Kconfig index 7c769d8e25ad..287cc624b90b 100644 --- a/drivers/net/usb/Kconfig +++ b/drivers/net/usb/Kconfig @@ -93,6 +93,17 @@ config USB_RTL8150 To compile this driver as a module, choose M here: the module will be called rtl8150. +config USB_RTL8152 + tristate "Realtek RTL8152 Based USB 2.0 Ethernet Adapters" + select NET_CORE + select MII + help + This option adds support for Realtek RTL8152 based USB 2.0 + 10/100 Ethernet adapters. + + To compile this driver as a module, choose M here: the + module will be called r8152. + config USB_USBNET tristate "Multi-purpose USB Networking Framework" select NET_CORE diff --git a/drivers/net/usb/Makefile b/drivers/net/usb/Makefile index 119b06c9aa16..9ab5c9d4b45a 100644 --- a/drivers/net/usb/Makefile +++ b/drivers/net/usb/Makefile @@ -6,6 +6,7 @@ obj-$(CONFIG_USB_CATC) += catc.o obj-$(CONFIG_USB_KAWETH) += kaweth.o obj-$(CONFIG_USB_PEGASUS) += pegasus.o obj-$(CONFIG_USB_RTL8150) += rtl8150.o +obj-$(CONFIG_USB_RTL8152) += r8152.o obj-$(CONFIG_USB_HSO) += hso.o obj-$(CONFIG_USB_NET_AX8817X) += asix.o asix-y := asix_devices.o asix_common.o ax88172a.o diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c index 4ff71d619cd8..24fbec27a22a 100644 --- a/drivers/net/usb/cdc_ether.c +++ b/drivers/net/usb/cdc_ether.c @@ -479,6 +479,7 @@ static const struct driver_info wwan_info = { #define NOVATEL_VENDOR_ID 0x1410 #define ZTE_VENDOR_ID 0x19D2 #define DELL_VENDOR_ID 0x413C +#define REALTEK_VENDOR_ID 0x0bda static const struct usb_device_id products [] = { /* @@ -619,6 +620,15 @@ static const struct usb_device_id products [] = { .driver_info = 0, }, +/* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */ +#if defined(CONFIG_USB_RTL8152) || defined(CONFIG_USB_RTL8152_MODULE) +{ + USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM, + USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), + .driver_info = 0, +}, +#endif + /* * WHITELIST!!! * diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c new file mode 100644 index 000000000000..14e519888631 --- /dev/null +++ b/drivers/net/usb/r8152.c @@ -0,0 +1,1767 @@ +/* + * Copyright (c) 2013 Realtek Semiconductor Corp. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Version Information */ +#define DRIVER_VERSION "v1.0.0 (2013/05/03)" +#define DRIVER_AUTHOR "Realtek linux nic maintainers " +#define DRIVER_DESC "Realtek RTL8152 Based USB 2.0 Ethernet Adapters" +#define MODULENAME "r8152" + +#define R8152_PHY_ID 32 + +#define PLA_IDR 0xc000 +#define PLA_RCR 0xc010 +#define PLA_RMS 0xc016 +#define PLA_RXFIFO_CTRL0 0xc0a0 +#define PLA_RXFIFO_CTRL1 0xc0a4 +#define PLA_RXFIFO_CTRL2 0xc0a8 +#define PLA_FMC 0xc0b4 +#define PLA_CFG_WOL 0xc0b6 +#define PLA_MAR 0xcd00 +#define PAL_BDC_CR 0xd1a0 +#define PLA_LEDSEL 0xdd90 +#define PLA_LED_FEATURE 0xdd92 +#define PLA_PHYAR 0xde00 +#define PLA_GPHY_INTR_IMR 0xe022 +#define PLA_EEE_CR 0xe040 +#define PLA_EEEP_CR 0xe080 +#define PLA_MAC_PWR_CTRL 0xe0c0 +#define PLA_TCR0 0xe610 +#define PLA_TCR1 0xe612 +#define PLA_TXFIFO_CTRL 0xe618 +#define PLA_RSTTELLY 0xe800 +#define PLA_CR 0xe813 +#define PLA_CRWECR 0xe81c +#define PLA_CONFIG5 0xe822 +#define PLA_PHY_PWR 0xe84c +#define PLA_OOB_CTRL 0xe84f +#define PLA_CPCR 0xe854 +#define PLA_MISC_0 0xe858 +#define PLA_MISC_1 0xe85a +#define PLA_OCP_GPHY_BASE 0xe86c +#define PLA_TELLYCNT 0xe890 +#define PLA_SFF_STS_7 0xe8de +#define PLA_PHYSTATUS 0xe908 +#define PLA_BP_BA 0xfc26 +#define PLA_BP_0 0xfc28 +#define PLA_BP_1 0xfc2a +#define PLA_BP_2 0xfc2c +#define PLA_BP_3 0xfc2e +#define PLA_BP_4 0xfc30 +#define PLA_BP_5 0xfc32 +#define PLA_BP_6 0xfc34 +#define PLA_BP_7 0xfc36 + +#define USB_DEV_STAT 0xb808 +#define USB_USB_CTRL 0xd406 +#define USB_PHY_CTRL 0xd408 +#define USB_TX_AGG 0xd40a +#define USB_RX_BUF_TH 0xd40c +#define USB_USB_TIMER 0xd428 +#define USB_PM_CTRL_STATUS 0xd432 +#define USB_TX_DMA 0xd434 +#define USB_UPS_CTRL 0xd800 +#define USB_BP_BA 0xfc26 +#define USB_BP_0 0xfc28 +#define USB_BP_1 0xfc2a +#define USB_BP_2 0xfc2c +#define USB_BP_3 0xfc2e +#define USB_BP_4 0xfc30 +#define USB_BP_5 0xfc32 +#define USB_BP_6 0xfc34 +#define USB_BP_7 0xfc36 + +/* OCP Registers */ +#define OCP_ALDPS_CONFIG 0x2010 +#define OCP_EEE_CONFIG1 0x2080 +#define OCP_EEE_CONFIG2 0x2092 +#define OCP_EEE_CONFIG3 0x2094 +#define OCP_EEE_AR 0xa41a +#define OCP_EEE_DATA 0xa41c + +/* PLA_RCR */ +#define RCR_AAP 0x00000001 +#define RCR_APM 0x00000002 +#define RCR_AM 0x00000004 +#define RCR_AB 0x00000008 +#define RCR_ACPT_ALL (RCR_AAP | RCR_APM | RCR_AM | RCR_AB) + +/* PLA_RXFIFO_CTRL0 */ +#define RXFIFO_THR1_NORMAL 0x00080002 +#define RXFIFO_THR1_OOB 0x01800003 + +/* PLA_RXFIFO_CTRL1 */ +#define RXFIFO_THR2_FULL 0x00000060 +#define RXFIFO_THR2_HIGH 0x00000038 +#define RXFIFO_THR2_OOB 0x0000004a + +/* PLA_RXFIFO_CTRL2 */ +#define RXFIFO_THR3_FULL 0x00000078 +#define RXFIFO_THR3_HIGH 0x00000048 +#define RXFIFO_THR3_OOB 0x0000005a + +/* PLA_TXFIFO_CTRL */ +#define TXFIFO_THR_NORMAL 0x00400008 + +/* PLA_FMC */ +#define FMC_FCR_MCU_EN 0x0001 + +/* PLA_EEEP_CR */ +#define EEEP_CR_EEEP_TX 0x0002 + +/* PLA_TCR0 */ +#define TCR0_TX_EMPTY 0x0800 +#define TCR0_AUTO_FIFO 0x0080 + +/* PLA_TCR1 */ +#define VERSION_MASK 0x7cf0 + +/* PLA_CR */ +#define CR_RST 0x10 +#define CR_RE 0x08 +#define CR_TE 0x04 + +/* PLA_CRWECR */ +#define CRWECR_NORAML 0x00 +#define CRWECR_CONFIG 0xc0 + +/* PLA_OOB_CTRL */ +#define NOW_IS_OOB 0x80 +#define TXFIFO_EMPTY 0x20 +#define RXFIFO_EMPTY 0x10 +#define LINK_LIST_READY 0x02 +#define DIS_MCU_CLROOB 0x01 +#define FIFO_EMPTY (TXFIFO_EMPTY | RXFIFO_EMPTY) + +/* PLA_MISC_1 */ +#define RXDY_GATED_EN 0x0008 + +/* PLA_SFF_STS_7 */ +#define RE_INIT_LL 0x8000 +#define MCU_BORW_EN 0x4000 + +/* PLA_CPCR */ +#define CPCR_RX_VLAN 0x0040 + +/* PLA_CFG_WOL */ +#define MAGIC_EN 0x0001 + +/* PAL_BDC_CR */ +#define ALDPS_PROXY_MODE 0x0001 + +/* PLA_CONFIG5 */ +#define LAN_WAKE_EN 0x0002 + +/* PLA_LED_FEATURE */ +#define LED_MODE_MASK 0x0700 + +/* PLA_PHY_PWR */ +#define TX_10M_IDLE_EN 0x0080 +#define PFM_PWM_SWITCH 0x0040 + +/* PLA_MAC_PWR_CTRL */ +#define D3_CLK_GATED_EN 0x00004000 +#define MCU_CLK_RATIO 0x07010f07 +#define MCU_CLK_RATIO_MASK 0x0f0f0f0f + +/* PLA_GPHY_INTR_IMR */ +#define GPHY_STS_MSK 0x0001 +#define SPEED_DOWN_MSK 0x0002 +#define SPDWN_RXDV_MSK 0x0004 +#define SPDWN_LINKCHG_MSK 0x0008 + +/* PLA_PHYAR */ +#define PHYAR_FLAG 0x80000000 + +/* PLA_EEE_CR */ +#define EEE_RX_EN 0x0001 +#define EEE_TX_EN 0x0002 + +/* USB_DEV_STAT */ +#define STAT_SPEED_MASK 0x0006 +#define STAT_SPEED_HIGH 0x0000 +#define STAT_SPEED_FULL 0x0001 + +/* USB_TX_AGG */ +#define TX_AGG_MAX_THRESHOLD 0x03 + +/* USB_RX_BUF_TH */ +#define RX_BUF_THR 0x7a120180 + +/* USB_TX_DMA */ +#define TEST_MODE_DISABLE 0x00000001 +#define TX_SIZE_ADJUST1 0x00000100 + +/* USB_UPS_CTRL */ +#define POWER_CUT 0x0100 + +/* USB_PM_CTRL_STATUS */ +#define RWSUME_INDICATE 0x0001 + +/* USB_USB_CTRL */ +#define RX_AGG_DISABLE 0x0010 + +/* OCP_ALDPS_CONFIG */ +#define ENPWRSAVE 0x8000 +#define ENPDNPS 0x0200 +#define LINKENA 0x0100 +#define DIS_SDSAVE 0x0010 + +/* OCP_EEE_CONFIG1 */ +#define RG_TXLPI_MSK_HFDUP 0x8000 +#define RG_MATCLR_EN 0x4000 +#define EEE_10_CAP 0x2000 +#define EEE_NWAY_EN 0x1000 +#define TX_QUIET_EN 0x0200 +#define RX_QUIET_EN 0x0100 +#define SDRISETIME 0x0010 /* bit 4 ~ 6 */ +#define RG_RXLPI_MSK_HFDUP 0x0008 +#define SDFALLTIME 0x0007 /* bit 0 ~ 2 */ + +/* OCP_EEE_CONFIG2 */ +#define RG_LPIHYS_NUM 0x7000 /* bit 12 ~ 15 */ +#define RG_DACQUIET_EN 0x0400 +#define RG_LDVQUIET_EN 0x0200 +#define RG_CKRSEL 0x0020 +#define RG_EEEPRG_EN 0x0010 + +/* OCP_EEE_CONFIG3 */ +#define FST_SNR_EYE_R 0x1500 /* bit 7 ~ 15 */ +#define RG_LFS_SEL 0x0060 /* bit 6 ~ 5 */ +#define MSK_PH 0x0006 /* bit 0 ~ 3 */ + +/* OCP_EEE_AR */ +/* bit[15:14] function */ +#define FUN_ADDR 0x0000 +#define FUN_DATA 0x4000 +/* bit[4:0] device addr */ +#define DEVICE_ADDR 0x0007 + +/* OCP_EEE_DATA */ +#define EEE_ADDR 0x003C +#define EEE_DATA 0x0002 + +enum rtl_register_content { + _100bps = 0x08, + _10bps = 0x04, + LINK_STATUS = 0x02, + FULL_DUP = 0x01, +}; + +#define RTL8152_REQT_READ 0xc0 +#define RTL8152_REQT_WRITE 0x40 +#define RTL8152_REQ_GET_REGS 0x05 +#define RTL8152_REQ_SET_REGS 0x05 + +#define BYTE_EN_DWORD 0xff +#define BYTE_EN_WORD 0x33 +#define BYTE_EN_BYTE 0x11 +#define BYTE_EN_SIX_BYTES 0x3f +#define BYTE_EN_START_MASK 0x0f +#define BYTE_EN_END_MASK 0xf0 + +#define RTL8152_RMS (VLAN_ETH_FRAME_LEN + VLAN_HLEN) +#define RTL8152_TX_TIMEOUT (HZ) + +/* rtl8152 flags */ +enum rtl8152_flags { + RTL8152_UNPLUG = 0, + RX_URB_FAIL, + RTL8152_SET_RX_MODE, + WORK_ENABLE +}; + +/* Define these values to match your device */ +#define VENDOR_ID_REALTEK 0x0bda +#define PRODUCT_ID_RTL8152 0x8152 + +#define MCU_TYPE_PLA 0x0100 +#define MCU_TYPE_USB 0x0000 + +struct rx_desc { + u32 opts1; +#define RX_LEN_MASK 0x7fff + u32 opts2; + u32 opts3; + u32 opts4; + u32 opts5; + u32 opts6; +}; + +struct tx_desc { + u32 opts1; +#define TX_FS (1 << 31) /* First segment of a packet */ +#define TX_LS (1 << 30) /* Final segment of a packet */ +#define TX_LEN_MASK 0xffff + u32 opts2; +}; + +struct r8152 { + unsigned long flags; + struct usb_device *udev; + struct tasklet_struct tl; + struct net_device *netdev; + struct urb *rx_urb, *tx_urb; + struct sk_buff *tx_skb, *rx_skb; + struct delayed_work schedule; + struct mii_if_info mii; + u32 msg_enable; + u16 ocp_base; + u8 version; + u8 speed; +}; + +enum rtl_version { + RTL_VER_UNKNOWN = 0, + RTL_VER_01, + RTL_VER_02 +}; + +/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). + * The RTL chips use a 64 element hash table based on the Ethernet CRC. + */ +static const int multicast_filter_limit = 32; + +static +int get_registers(struct r8152 *tp, u16 value, u16 index, u16 size, void *data) +{ + return usb_control_msg(tp->udev, usb_rcvctrlpipe(tp->udev, 0), + RTL8152_REQ_GET_REGS, RTL8152_REQT_READ, + value, index, data, size, 500); +} + +static +int set_registers(struct r8152 *tp, u16 value, u16 index, u16 size, void *data) +{ + return usb_control_msg(tp->udev, usb_sndctrlpipe(tp->udev, 0), + RTL8152_REQ_SET_REGS, RTL8152_REQT_WRITE, + value, index, data, size, 500); +} + +static int generic_ocp_read(struct r8152 *tp, u16 index, u16 size, + void *data, u16 type) +{ + u16 limit = 64; + int ret = 0; + + if (test_bit(RTL8152_UNPLUG, &tp->flags)) + return -ENODEV; + + /* both size and indix must be 4 bytes align */ + if ((size & 3) || !size || (index & 3) || !data) + return -EPERM; + + if ((u32)index + (u32)size > 0xffff) + return -EPERM; + + while (size) { + if (size > limit) { + ret = get_registers(tp, index, type, limit, data); + if (ret < 0) + break; + + index += limit; + data += limit; + size -= limit; + } else { + ret = get_registers(tp, index, type, size, data); + if (ret < 0) + break; + + index += size; + data += size; + size = 0; + break; + } + } + + return ret; +} + +static int generic_ocp_write(struct r8152 *tp, u16 index, u16 byteen, + u16 size, void *data, u16 type) +{ + int ret; + u16 byteen_start, byteen_end, byen; + u16 limit = 512; + + if (test_bit(RTL8152_UNPLUG, &tp->flags)) + return -ENODEV; + + /* both size and indix must be 4 bytes align */ + if ((size & 3) || !size || (index & 3) || !data) + return -EPERM; + + if ((u32)index + (u32)size > 0xffff) + return -EPERM; + + byteen_start = byteen & BYTE_EN_START_MASK; + byteen_end = byteen & BYTE_EN_END_MASK; + + byen = byteen_start | (byteen_start << 4); + ret = set_registers(tp, index, type | byen, 4, data); + if (ret < 0) + goto error1; + + index += 4; + data += 4; + size -= 4; + + if (size) { + size -= 4; + + while (size) { + if (size > limit) { + ret = set_registers(tp, index, + type | BYTE_EN_DWORD, + limit, data); + if (ret < 0) + goto error1; + + index += limit; + data += limit; + size -= limit; + } else { + ret = set_registers(tp, index, + type | BYTE_EN_DWORD, + size, data); + if (ret < 0) + goto error1; + + index += size; + data += size; + size = 0; + break; + } + } + + byen = byteen_end | (byteen_end >> 4); + ret = set_registers(tp, index, type | byen, 4, data); + if (ret < 0) + goto error1; + } + +error1: + return ret; +} + +static inline +int pla_ocp_read(struct r8152 *tp, u16 index, u16 size, void *data) +{ + return generic_ocp_read(tp, index, size, data, MCU_TYPE_PLA); +} + +static inline +int pla_ocp_write(struct r8152 *tp, u16 index, u16 byteen, u16 size, void *data) +{ + return generic_ocp_write(tp, index, byteen, size, data, MCU_TYPE_PLA); +} + +static inline +int usb_ocp_read(struct r8152 *tp, u16 index, u16 size, void *data) +{ + return generic_ocp_read(tp, index, size, data, MCU_TYPE_USB); +} + +static inline +int usb_ocp_write(struct r8152 *tp, u16 index, u16 byteen, u16 size, void *data) +{ + return generic_ocp_write(tp, index, byteen, size, data, MCU_TYPE_USB); +} + +static u32 ocp_read_dword(struct r8152 *tp, u16 type, u16 index) +{ + u32 data; + + if (type == MCU_TYPE_PLA) + pla_ocp_read(tp, index, sizeof(data), &data); + else + usb_ocp_read(tp, index, sizeof(data), &data); + + return __le32_to_cpu(data); +} + +static void ocp_write_dword(struct r8152 *tp, u16 type, u16 index, u32 data) +{ + if (type == MCU_TYPE_PLA) + pla_ocp_write(tp, index, BYTE_EN_DWORD, sizeof(data), &data); + else + usb_ocp_write(tp, index, BYTE_EN_DWORD, sizeof(data), &data); +} + +static u16 ocp_read_word(struct r8152 *tp, u16 type, u16 index) +{ + u32 data; + u8 shift = index & 2; + + index &= ~3; + + if (type == MCU_TYPE_PLA) + pla_ocp_read(tp, index, sizeof(data), &data); + else + usb_ocp_read(tp, index, sizeof(data), &data); + + data = __le32_to_cpu(data); + data >>= (shift * 8); + data &= 0xffff; + + return (u16)data; +} + +static void ocp_write_word(struct r8152 *tp, u16 type, u16 index, u32 data) +{ + u32 tmp, mask = 0xffff; + u16 byen = BYTE_EN_WORD; + u8 shift = index & 2; + + data &= mask; + + if (index & 2) { + byen <<= shift; + mask <<= (shift * 8); + data <<= (shift * 8); + index &= ~3; + } + + if (type == MCU_TYPE_PLA) + pla_ocp_read(tp, index, sizeof(tmp), &tmp); + else + usb_ocp_read(tp, index, sizeof(tmp), &tmp); + + tmp = __le32_to_cpu(tmp) & ~mask; + tmp |= data; + tmp = __cpu_to_le32(tmp); + + if (type == MCU_TYPE_PLA) + pla_ocp_write(tp, index, byen, sizeof(tmp), &tmp); + else + usb_ocp_write(tp, index, byen, sizeof(tmp), &tmp); +} + +static u8 ocp_read_byte(struct r8152 *tp, u16 type, u16 index) +{ + u32 data; + u8 shift = index & 3; + + index &= ~3; + + if (type == MCU_TYPE_PLA) + pla_ocp_read(tp, index, sizeof(data), &data); + else + usb_ocp_read(tp, index, sizeof(data), &data); + + data = __le32_to_cpu(data); + data >>= (shift * 8); + data &= 0xff; + + return (u8)data; +} + +static void ocp_write_byte(struct r8152 *tp, u16 type, u16 index, u32 data) +{ + u32 tmp, mask = 0xff; + u16 byen = BYTE_EN_BYTE; + u8 shift = index & 3; + + data &= mask; + + if (index & 3) { + byen <<= shift; + mask <<= (shift * 8); + data <<= (shift * 8); + index &= ~3; + } + + if (type == MCU_TYPE_PLA) + pla_ocp_read(tp, index, sizeof(tmp), &tmp); + else + usb_ocp_read(tp, index, sizeof(tmp), &tmp); + + tmp = __le32_to_cpu(tmp) & ~mask; + tmp |= data; + tmp = __cpu_to_le32(tmp); + + if (type == MCU_TYPE_PLA) + pla_ocp_write(tp, index, byen, sizeof(tmp), &tmp); + else + usb_ocp_write(tp, index, byen, sizeof(tmp), &tmp); +} + +static void r8152_mdio_write(struct r8152 *tp, u32 reg_addr, u32 value) +{ + u32 ocp_data; + int i; + + ocp_data = PHYAR_FLAG | ((reg_addr & 0x1f) << 16) | + (value & 0xffff); + + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_PHYAR, ocp_data); + + for (i = 20; i > 0; i--) { + udelay(25); + ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_PHYAR); + if (!(ocp_data & PHYAR_FLAG)) + break; + } + udelay(20); +} + +static int r8152_mdio_read(struct r8152 *tp, u32 reg_addr) +{ + u32 ocp_data; + int i; + + ocp_data = (reg_addr & 0x1f) << 16; + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_PHYAR, ocp_data); + + for (i = 20; i > 0; i--) { + udelay(25); + ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_PHYAR); + if (ocp_data & PHYAR_FLAG) + break; + } + udelay(20); + + if (!(ocp_data & PHYAR_FLAG)) + return -EAGAIN; + + return (u16)(ocp_data & 0xffff); +} + +static int read_mii_word(struct net_device *netdev, int phy_id, int reg) +{ + struct r8152 *tp = netdev_priv(netdev); + + if (phy_id != R8152_PHY_ID) + return -EINVAL; + + return r8152_mdio_read(tp, reg); +} + +static +void write_mii_word(struct net_device *netdev, int phy_id, int reg, int val) +{ + struct r8152 *tp = netdev_priv(netdev); + + if (phy_id != R8152_PHY_ID) + return; + + r8152_mdio_write(tp, reg, val); +} + +static void ocp_reg_write(struct r8152 *tp, u16 addr, u16 data) +{ + u16 ocp_base, ocp_index; + + ocp_base = addr & 0xf000; + if (ocp_base != tp->ocp_base) { + ocp_write_word(tp, MCU_TYPE_PLA, PLA_OCP_GPHY_BASE, ocp_base); + tp->ocp_base = ocp_base; + } + + ocp_index = (addr & 0x0fff) | 0xb000; + ocp_write_word(tp, MCU_TYPE_PLA, ocp_index, data); +} + +static inline void set_ethernet_addr(struct r8152 *tp) +{ + struct net_device *dev = tp->netdev; + u8 *node_id; + + node_id = kmalloc(sizeof(u8) * 8, GFP_KERNEL); + if (!node_id) { + netif_err(tp, probe, dev, "out of memory"); + return; + } + + if (pla_ocp_read(tp, PLA_IDR, sizeof(u8) * 8, node_id) < 0) + netif_notice(tp, probe, dev, "inet addr fail\n"); + else { + memcpy(dev->dev_addr, node_id, dev->addr_len); + memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len); + } + kfree(node_id); +} + +static int rtl8152_set_mac_address(struct net_device *netdev, void *p) +{ + struct r8152 *tp = netdev_priv(netdev); + struct sockaddr *addr = p; + + if (!is_valid_ether_addr(addr->sa_data)) + return -EADDRNOTAVAIL; + + memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); + + ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_CONFIG); + pla_ocp_write(tp, PLA_IDR, BYTE_EN_SIX_BYTES, 8, addr->sa_data); + ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_NORAML); + + return 0; +} + +static int alloc_all_urbs(struct r8152 *tp) +{ + tp->rx_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!tp->rx_urb) + return 0; + tp->tx_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!tp->tx_urb) { + usb_free_urb(tp->rx_urb); + return 0; + } + + return 1; +} + +static void free_all_urbs(struct r8152 *tp) +{ + usb_free_urb(tp->rx_urb); + usb_free_urb(tp->tx_urb); +} + +static struct net_device_stats *rtl8152_get_stats(struct net_device *dev) +{ + return &dev->stats; +} + +static void read_bulk_callback(struct urb *urb) +{ + struct r8152 *tp; + unsigned pkt_len; + struct sk_buff *skb; + struct net_device *netdev; + struct net_device_stats *stats; + int status = urb->status; + int result; + struct rx_desc *rx_desc; + + tp = urb->context; + if (!tp) + return; + if (test_bit(RTL8152_UNPLUG, &tp->flags)) + return; + netdev = tp->netdev; + if (!netif_device_present(netdev)) + return; + + stats = rtl8152_get_stats(netdev); + switch (status) { + case 0: + break; + case -ESHUTDOWN: + set_bit(RTL8152_UNPLUG, &tp->flags); + netif_device_detach(tp->netdev); + case -ENOENT: + return; /* the urb is in unlink state */ + case -ETIME: + pr_warn_ratelimited("may be reset is needed?..\n"); + goto goon; + default: + pr_warn_ratelimited("Rx status %d\n", status); + goto goon; + } + + /* protect against short packets (tell me why we got some?!?) */ + if (urb->actual_length < sizeof(*rx_desc)) + goto goon; + + + rx_desc = (struct rx_desc *)urb->transfer_buffer; + pkt_len = le32_to_cpu(rx_desc->opts1) & RX_LEN_MASK; + if (urb->actual_length < sizeof(struct rx_desc) + pkt_len) + goto goon; + + skb = netdev_alloc_skb_ip_align(netdev, pkt_len); + if (!skb) + goto goon; + + memcpy(skb->data, tp->rx_skb->data + sizeof(struct rx_desc), pkt_len); + skb_put(skb, pkt_len); + skb->protocol = eth_type_trans(skb, netdev); + netif_rx(skb); + stats->rx_packets++; + stats->rx_bytes += pkt_len; +goon: + usb_fill_bulk_urb(tp->rx_urb, tp->udev, usb_rcvbulkpipe(tp->udev, 1), + tp->rx_skb->data, RTL8152_RMS + sizeof(struct rx_desc), + (usb_complete_t)read_bulk_callback, tp); + result = usb_submit_urb(tp->rx_urb, GFP_ATOMIC); + if (result == -ENODEV) { + netif_device_detach(tp->netdev); + } else if (result) { + set_bit(RX_URB_FAIL, &tp->flags); + goto resched; + } else { + clear_bit(RX_URB_FAIL, &tp->flags); + } + + return; +resched: + tasklet_schedule(&tp->tl); +} + +static void rx_fixup(unsigned long data) +{ + struct r8152 *tp; + int status; + + tp = (struct r8152 *)data; + if (!test_bit(WORK_ENABLE, &tp->flags)) + return; + + status = usb_submit_urb(tp->rx_urb, GFP_ATOMIC); + if (status == -ENODEV) { + netif_device_detach(tp->netdev); + } else if (status) { + set_bit(RX_URB_FAIL, &tp->flags); + goto tlsched; + } else { + clear_bit(RX_URB_FAIL, &tp->flags); + } + + return; +tlsched: + tasklet_schedule(&tp->tl); +} + +static void write_bulk_callback(struct urb *urb) +{ + struct r8152 *tp; + int status = urb->status; + + tp = urb->context; + if (!tp) + return; + dev_kfree_skb_irq(tp->tx_skb); + if (!netif_device_present(tp->netdev)) + return; + if (status) + dev_info(&urb->dev->dev, "%s: Tx status %d\n", + tp->netdev->name, status); + tp->netdev->trans_start = jiffies; + netif_wake_queue(tp->netdev); +} + +static void rtl8152_tx_timeout(struct net_device *netdev) +{ + struct r8152 *tp = netdev_priv(netdev); + struct net_device_stats *stats = rtl8152_get_stats(netdev); + netif_warn(tp, tx_err, netdev, "Tx timeout.\n"); + usb_unlink_urb(tp->tx_urb); + stats->tx_errors++; +} + +static void rtl8152_set_rx_mode(struct net_device *netdev) +{ + struct r8152 *tp = netdev_priv(netdev); + + if (tp->speed & LINK_STATUS) + set_bit(RTL8152_SET_RX_MODE, &tp->flags); +} + +static void _rtl8152_set_rx_mode(struct net_device *netdev) +{ + struct r8152 *tp = netdev_priv(netdev); + u32 tmp, *mc_filter; /* Multicast hash filter */ + u32 ocp_data; + + mc_filter = kmalloc(sizeof(u32) * 2, GFP_KERNEL); + if (!mc_filter) { + netif_err(tp, link, netdev, "out of memory"); + return; + } + + clear_bit(RTL8152_SET_RX_MODE, &tp->flags); + netif_stop_queue(netdev); + ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR); + ocp_data &= ~RCR_ACPT_ALL; + ocp_data |= RCR_AB | RCR_APM; + + if (netdev->flags & IFF_PROMISC) { + /* Unconditionally log net taps. */ + netif_notice(tp, link, netdev, "Promiscuous mode enabled\n"); + ocp_data |= RCR_AM | RCR_AAP; + mc_filter[1] = mc_filter[0] = 0xffffffff; + } else if ((netdev_mc_count(netdev) > multicast_filter_limit) || + (netdev->flags & IFF_ALLMULTI)) { + /* Too many to filter perfectly -- accept all multicasts. */ + ocp_data |= RCR_AM; + mc_filter[1] = mc_filter[0] = 0xffffffff; + } else { + struct netdev_hw_addr *ha; + + mc_filter[1] = mc_filter[0] = 0; + netdev_for_each_mc_addr(ha, netdev) { + int bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26; + mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31); + ocp_data |= RCR_AM; + } + } + + tmp = mc_filter[0]; + mc_filter[0] = __cpu_to_le32(swab32(mc_filter[1])); + mc_filter[1] = __cpu_to_le32(swab32(tmp)); + + pla_ocp_write(tp, PLA_MAR, BYTE_EN_DWORD, sizeof(u32) * 2, mc_filter); + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data); + netif_wake_queue(netdev); + kfree(mc_filter); +} + +static netdev_tx_t rtl8152_start_xmit(struct sk_buff *skb, + struct net_device *netdev) +{ + struct r8152 *tp = netdev_priv(netdev); + struct net_device_stats *stats = rtl8152_get_stats(netdev); + struct tx_desc *tx_desc; + int len, res; + + netif_stop_queue(netdev); + len = skb->len; + if (skb_header_cloned(skb) || skb_headroom(skb) < sizeof(*tx_desc)) { + struct sk_buff *tx_skb; + + tx_skb = skb_copy_expand(skb, sizeof(*tx_desc), 0, GFP_ATOMIC); + dev_kfree_skb_any(skb); + if (!tx_skb) { + stats->tx_dropped++; + netif_wake_queue(netdev); + return NETDEV_TX_OK; + } + skb = tx_skb; + } + tx_desc = (struct tx_desc *)skb_push(skb, sizeof(*tx_desc)); + memset(tx_desc, 0, sizeof(*tx_desc)); + tx_desc->opts1 = cpu_to_le32((len & TX_LEN_MASK) | TX_FS | TX_LS); + tp->tx_skb = skb; + skb_tx_timestamp(skb); + usb_fill_bulk_urb(tp->tx_urb, tp->udev, usb_sndbulkpipe(tp->udev, 2), + skb->data, skb->len, + (usb_complete_t)write_bulk_callback, tp); + res = usb_submit_urb(tp->tx_urb, GFP_ATOMIC); + if (res) { + /* Can we get/handle EPIPE here? */ + if (res == -ENODEV) { + netif_device_detach(tp->netdev); + } else { + netif_warn(tp, tx_err, netdev, + "failed tx_urb %d\n", res); + stats->tx_errors++; + netif_start_queue(netdev); + } + } else { + stats->tx_packets++; + stats->tx_bytes += skb->len; + } + + return NETDEV_TX_OK; +} + +static void r8152b_reset_packet_filter(struct r8152 *tp) +{ + u32 ocp_data; + + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_FMC); + ocp_data &= ~FMC_FCR_MCU_EN; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_FMC, ocp_data); + ocp_data |= FMC_FCR_MCU_EN; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_FMC, ocp_data); +} + +static void rtl8152_nic_reset(struct r8152 *tp) +{ + int i; + + ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CR, CR_RST); + + for (i = 0; i < 1000; i++) { + if (!(ocp_read_byte(tp, MCU_TYPE_PLA, PLA_CR) & CR_RST)) + break; + udelay(100); + } +} + +static inline u8 rtl8152_get_speed(struct r8152 *tp) +{ + return ocp_read_byte(tp, MCU_TYPE_PLA, PLA_PHYSTATUS); +} + +static int rtl8152_enable(struct r8152 *tp) +{ + u32 ocp_data; + u8 speed; + + speed = rtl8152_get_speed(tp); + if (speed & _100bps) { + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EEEP_CR); + ocp_data &= ~EEEP_CR_EEEP_TX; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_EEEP_CR, ocp_data); + } else { + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EEEP_CR); + ocp_data |= EEEP_CR_EEEP_TX; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_EEEP_CR, ocp_data); + } + + r8152b_reset_packet_filter(tp); + + ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_CR); + ocp_data |= CR_RE | CR_TE; + ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CR, ocp_data); + + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MISC_1); + ocp_data &= ~RXDY_GATED_EN; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_MISC_1, ocp_data); + + usb_fill_bulk_urb(tp->rx_urb, tp->udev, usb_rcvbulkpipe(tp->udev, 1), + tp->rx_skb->data, RTL8152_RMS + sizeof(struct rx_desc), + (usb_complete_t)read_bulk_callback, tp); + + return usb_submit_urb(tp->rx_urb, GFP_KERNEL); +} + +static void rtl8152_disable(struct r8152 *tp) +{ + u32 ocp_data; + int i; + + ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR); + ocp_data &= ~RCR_ACPT_ALL; + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data); + + usb_kill_urb(tp->tx_urb); + + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MISC_1); + ocp_data |= RXDY_GATED_EN; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_MISC_1, ocp_data); + + for (i = 0; i < 1000; i++) { + ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL); + if ((ocp_data & FIFO_EMPTY) == FIFO_EMPTY) + break; + mdelay(1); + } + + for (i = 0; i < 1000; i++) { + if (ocp_read_word(tp, MCU_TYPE_PLA, PLA_TCR0) & TCR0_TX_EMPTY) + break; + mdelay(1); + } + + usb_kill_urb(tp->rx_urb); + + rtl8152_nic_reset(tp); +} + +static void r8152b_exit_oob(struct r8152 *tp) +{ + u32 ocp_data; + int i; + + ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR); + ocp_data &= ~RCR_ACPT_ALL; + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data); + + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MISC_1); + ocp_data |= RXDY_GATED_EN; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_MISC_1, ocp_data); + + ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_NORAML); + ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CR, 0x00); + + ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL); + ocp_data &= ~NOW_IS_OOB; + ocp_write_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL, ocp_data); + + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7); + ocp_data &= ~MCU_BORW_EN; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7, ocp_data); + + for (i = 0; i < 1000; i++) { + ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL); + if (ocp_data & LINK_LIST_READY) + break; + mdelay(1); + } + + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7); + ocp_data |= RE_INIT_LL; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7, ocp_data); + + for (i = 0; i < 1000; i++) { + ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL); + if (ocp_data & LINK_LIST_READY) + break; + mdelay(1); + } + + rtl8152_nic_reset(tp); + + /* rx share fifo credit full threshold */ + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL0, RXFIFO_THR1_NORMAL); + + ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_DEV_STAT); + ocp_data &= STAT_SPEED_MASK; + if (ocp_data == STAT_SPEED_FULL) { + /* rx share fifo credit near full threshold */ + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL1, + RXFIFO_THR2_FULL); + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL2, + RXFIFO_THR3_FULL); + } else { + /* rx share fifo credit near full threshold */ + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL1, + RXFIFO_THR2_HIGH); + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL2, + RXFIFO_THR3_HIGH); + } + + /* TX share fifo free credit full threshold */ + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_TXFIFO_CTRL, TXFIFO_THR_NORMAL); + + ocp_write_byte(tp, MCU_TYPE_USB, USB_TX_AGG, TX_AGG_MAX_THRESHOLD); + ocp_write_dword(tp, MCU_TYPE_USB, USB_RX_BUF_TH, RX_BUF_THR); + ocp_write_dword(tp, MCU_TYPE_USB, USB_TX_DMA, + TEST_MODE_DISABLE | TX_SIZE_ADJUST1); + + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CPCR); + ocp_data &= ~CPCR_RX_VLAN; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_CPCR, ocp_data); + + ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, RTL8152_RMS); + + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_TCR0); + ocp_data |= TCR0_AUTO_FIFO; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_TCR0, ocp_data); +} + +static void r8152b_enter_oob(struct r8152 *tp) +{ + u32 ocp_data; + int i; + + ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL); + ocp_data &= ~NOW_IS_OOB; + ocp_write_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL, ocp_data); + + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL0, RXFIFO_THR1_OOB); + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL1, RXFIFO_THR2_OOB); + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL2, RXFIFO_THR3_OOB); + + rtl8152_disable(tp); + + for (i = 0; i < 1000; i++) { + ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL); + if (ocp_data & LINK_LIST_READY) + break; + mdelay(1); + } + + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7); + ocp_data |= RE_INIT_LL; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7, ocp_data); + + for (i = 0; i < 1000; i++) { + ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL); + if (ocp_data & LINK_LIST_READY) + break; + mdelay(1); + } + + ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, RTL8152_RMS); + + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CFG_WOL); + ocp_data |= MAGIC_EN; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_CFG_WOL, ocp_data); + + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CPCR); + ocp_data |= CPCR_RX_VLAN; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_CPCR, ocp_data); + + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PAL_BDC_CR); + ocp_data |= ALDPS_PROXY_MODE; + ocp_write_word(tp, MCU_TYPE_PLA, PAL_BDC_CR, ocp_data); + + ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL); + ocp_data |= NOW_IS_OOB | DIS_MCU_CLROOB; + ocp_write_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL, ocp_data); + + ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CONFIG5, LAN_WAKE_EN); + + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MISC_1); + ocp_data &= ~RXDY_GATED_EN; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_MISC_1, ocp_data); + + ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR); + ocp_data |= RCR_APM | RCR_AM | RCR_AB; + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data); +} + +static void r8152b_disable_aldps(struct r8152 *tp) +{ + ocp_reg_write(tp, OCP_ALDPS_CONFIG, ENPDNPS | LINKENA | DIS_SDSAVE); + msleep(20); +} + +static inline void r8152b_enable_aldps(struct r8152 *tp) +{ + ocp_reg_write(tp, OCP_ALDPS_CONFIG, ENPWRSAVE | ENPDNPS | + LINKENA | DIS_SDSAVE); +} + +static int rtl8152_set_speed(struct r8152 *tp, u8 autoneg, u16 speed, u8 duplex) +{ + u16 bmcr, anar; + int ret = 0; + + cancel_delayed_work_sync(&tp->schedule); + anar = r8152_mdio_read(tp, MII_ADVERTISE); + anar &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL | + ADVERTISE_100HALF | ADVERTISE_100FULL); + + if (autoneg == AUTONEG_DISABLE) { + if (speed == SPEED_10) { + bmcr = 0; + anar |= ADVERTISE_10HALF | ADVERTISE_10FULL; + } else if (speed == SPEED_100) { + bmcr = BMCR_SPEED100; + anar |= ADVERTISE_100HALF | ADVERTISE_100FULL; + } else { + ret = -EINVAL; + goto out; + } + + if (duplex == DUPLEX_FULL) + bmcr |= BMCR_FULLDPLX; + } else { + if (speed == SPEED_10) { + if (duplex == DUPLEX_FULL) + anar |= ADVERTISE_10HALF | ADVERTISE_10FULL; + else + anar |= ADVERTISE_10HALF; + } else if (speed == SPEED_100) { + if (duplex == DUPLEX_FULL) { + anar |= ADVERTISE_10HALF | ADVERTISE_10FULL; + anar |= ADVERTISE_100HALF | ADVERTISE_100FULL; + } else { + anar |= ADVERTISE_10HALF; + anar |= ADVERTISE_100HALF; + } + } else { + ret = -EINVAL; + goto out; + } + + bmcr = BMCR_ANENABLE | BMCR_ANRESTART; + } + + r8152_mdio_write(tp, MII_ADVERTISE, anar); + r8152_mdio_write(tp, MII_BMCR, bmcr); + +out: + schedule_delayed_work(&tp->schedule, 5 * HZ); + + return ret; +} + +static void rtl8152_down(struct r8152 *tp) +{ + u32 ocp_data; + + ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_UPS_CTRL); + ocp_data &= ~POWER_CUT; + ocp_write_word(tp, MCU_TYPE_USB, USB_UPS_CTRL, ocp_data); + + r8152b_disable_aldps(tp); + r8152b_enter_oob(tp); + r8152b_enable_aldps(tp); +} + +static void set_carrier(struct r8152 *tp) +{ + struct net_device *netdev = tp->netdev; + u8 speed; + + speed = rtl8152_get_speed(tp); + + if (speed & LINK_STATUS) { + if (!(tp->speed & LINK_STATUS)) { + rtl8152_enable(tp); + set_bit(RTL8152_SET_RX_MODE, &tp->flags); + netif_carrier_on(netdev); + } + } else { + if (tp->speed & LINK_STATUS) { + netif_carrier_off(netdev); + rtl8152_disable(tp); + } + } + tp->speed = speed; +} + +static void rtl_work_func_t(struct work_struct *work) +{ + struct r8152 *tp = container_of(work, struct r8152, schedule.work); + + if (!test_bit(WORK_ENABLE, &tp->flags)) + goto out1; + + if (test_bit(RTL8152_UNPLUG, &tp->flags)) + goto out1; + + set_carrier(tp); + + if (test_bit(RTL8152_SET_RX_MODE, &tp->flags)) + _rtl8152_set_rx_mode(tp->netdev); + + schedule_delayed_work(&tp->schedule, HZ); + +out1: + return; +} + +static int rtl8152_open(struct net_device *netdev) +{ + struct r8152 *tp = netdev_priv(netdev); + int res = 0; + + tp->speed = rtl8152_get_speed(tp); + if (tp->speed & LINK_STATUS) { + res = rtl8152_enable(tp); + if (res) { + if (res == -ENODEV) + netif_device_detach(tp->netdev); + + netif_err(tp, ifup, netdev, + "rtl8152_open failed: %d\n", res); + return res; + } + + netif_carrier_on(netdev); + } else { + netif_stop_queue(netdev); + netif_carrier_off(netdev); + } + + rtl8152_set_speed(tp, AUTONEG_ENABLE, SPEED_100, DUPLEX_FULL); + netif_start_queue(netdev); + set_bit(WORK_ENABLE, &tp->flags); + schedule_delayed_work(&tp->schedule, 0); + + return res; +} + +static int rtl8152_close(struct net_device *netdev) +{ + struct r8152 *tp = netdev_priv(netdev); + int res = 0; + + clear_bit(WORK_ENABLE, &tp->flags); + cancel_delayed_work_sync(&tp->schedule); + netif_stop_queue(netdev); + rtl8152_disable(tp); + + return res; +} + +static void rtl_clear_bp(struct r8152 *tp) +{ + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_BP_0, 0); + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_BP_2, 0); + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_BP_4, 0); + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_BP_6, 0); + ocp_write_dword(tp, MCU_TYPE_USB, USB_BP_0, 0); + ocp_write_dword(tp, MCU_TYPE_USB, USB_BP_2, 0); + ocp_write_dword(tp, MCU_TYPE_USB, USB_BP_4, 0); + ocp_write_dword(tp, MCU_TYPE_USB, USB_BP_6, 0); + mdelay(3); + ocp_write_word(tp, MCU_TYPE_PLA, PLA_BP_BA, 0); + ocp_write_word(tp, MCU_TYPE_USB, USB_BP_BA, 0); +} + +static void r8152b_enable_eee(struct r8152 *tp) +{ + u32 ocp_data; + + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EEE_CR); + ocp_data |= EEE_RX_EN | EEE_TX_EN; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_EEE_CR, ocp_data); + ocp_reg_write(tp, OCP_EEE_CONFIG1, RG_TXLPI_MSK_HFDUP | RG_MATCLR_EN | + EEE_10_CAP | EEE_NWAY_EN | + TX_QUIET_EN | RX_QUIET_EN | + SDRISETIME | RG_RXLPI_MSK_HFDUP | + SDFALLTIME); + ocp_reg_write(tp, OCP_EEE_CONFIG2, RG_LPIHYS_NUM | RG_DACQUIET_EN | + RG_LDVQUIET_EN | RG_CKRSEL | + RG_EEEPRG_EN); + ocp_reg_write(tp, OCP_EEE_CONFIG3, FST_SNR_EYE_R | RG_LFS_SEL | MSK_PH); + ocp_reg_write(tp, OCP_EEE_AR, FUN_ADDR | DEVICE_ADDR); + ocp_reg_write(tp, OCP_EEE_DATA, EEE_ADDR); + ocp_reg_write(tp, OCP_EEE_AR, FUN_DATA | DEVICE_ADDR); + ocp_reg_write(tp, OCP_EEE_DATA, EEE_DATA); + ocp_reg_write(tp, OCP_EEE_AR, 0x0000); +} + +static void r8152b_enable_fc(struct r8152 *tp) +{ + u16 anar; + + anar = r8152_mdio_read(tp, MII_ADVERTISE); + anar |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM; + r8152_mdio_write(tp, MII_ADVERTISE, anar); +} + +static void r8152b_hw_phy_cfg(struct r8152 *tp) +{ + r8152_mdio_write(tp, MII_BMCR, BMCR_ANENABLE); + r8152b_disable_aldps(tp); +} + +static void r8152b_init(struct r8152 *tp) +{ + u32 ocp_data; + int i; + + rtl_clear_bp(tp); + + if (tp->version == RTL_VER_01) { + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_LED_FEATURE); + ocp_data &= ~LED_MODE_MASK; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_LED_FEATURE, ocp_data); + } + + r8152b_hw_phy_cfg(tp); + + ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_UPS_CTRL); + ocp_data &= ~POWER_CUT; + ocp_write_word(tp, MCU_TYPE_USB, USB_UPS_CTRL, ocp_data); + + ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_PM_CTRL_STATUS); + ocp_data &= ~RWSUME_INDICATE; + ocp_write_word(tp, MCU_TYPE_USB, USB_PM_CTRL_STATUS, ocp_data); + + r8152b_exit_oob(tp); + + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_PHY_PWR); + ocp_data |= TX_10M_IDLE_EN | PFM_PWM_SWITCH; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_PHY_PWR, ocp_data); + ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL); + ocp_data &= ~MCU_CLK_RATIO_MASK; + ocp_data |= MCU_CLK_RATIO | D3_CLK_GATED_EN; + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL, ocp_data); + ocp_data = GPHY_STS_MSK | SPEED_DOWN_MSK | + SPDWN_RXDV_MSK | SPDWN_LINKCHG_MSK; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_GPHY_INTR_IMR, ocp_data); + + r8152b_enable_eee(tp); + r8152b_enable_aldps(tp); + r8152b_enable_fc(tp); + + r8152_mdio_write(tp, MII_BMCR, BMCR_RESET | BMCR_ANENABLE | + BMCR_ANRESTART); + for (i = 0; i < 100; i++) { + udelay(100); + if (!(r8152_mdio_read(tp, MII_BMCR) & BMCR_RESET)) + break; + } + + /* disable rx aggregation */ + ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_USB_CTRL); + ocp_data |= RX_AGG_DISABLE; + ocp_write_word(tp, MCU_TYPE_USB, USB_USB_CTRL, ocp_data); +} + +static int rtl8152_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct r8152 *tp = usb_get_intfdata(intf); + + netif_device_detach(tp->netdev); + + if (netif_running(tp->netdev)) { + clear_bit(WORK_ENABLE, &tp->flags); + cancel_delayed_work_sync(&tp->schedule); + } + + rtl8152_down(tp); + + return 0; +} + +static int rtl8152_resume(struct usb_interface *intf) +{ + struct r8152 *tp = usb_get_intfdata(intf); + + r8152b_init(tp); + netif_device_attach(tp->netdev); + if (netif_running(tp->netdev)) { + rtl8152_enable(tp); + set_bit(WORK_ENABLE, &tp->flags); + set_bit(RTL8152_SET_RX_MODE, &tp->flags); + schedule_delayed_work(&tp->schedule, 0); + } + + return 0; +} + +static void rtl8152_get_drvinfo(struct net_device *netdev, + struct ethtool_drvinfo *info) +{ + struct r8152 *tp = netdev_priv(netdev); + + strncpy(info->driver, MODULENAME, ETHTOOL_BUSINFO_LEN); + strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN); + usb_make_path(tp->udev, info->bus_info, sizeof(info->bus_info)); +} + +static +int rtl8152_get_settings(struct net_device *netdev, struct ethtool_cmd *cmd) +{ + struct r8152 *tp = netdev_priv(netdev); + + if (!tp->mii.mdio_read) + return -EOPNOTSUPP; + + return mii_ethtool_gset(&tp->mii, cmd); +} + +static int rtl8152_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct r8152 *tp = netdev_priv(dev); + + return rtl8152_set_speed(tp, cmd->autoneg, cmd->speed, cmd->duplex); +} + +static struct ethtool_ops ops = { + .get_drvinfo = rtl8152_get_drvinfo, + .get_settings = rtl8152_get_settings, + .set_settings = rtl8152_set_settings, + .get_link = ethtool_op_get_link, +}; + +static int rtl8152_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) +{ + struct r8152 *tp = netdev_priv(netdev); + struct mii_ioctl_data *data = if_mii(rq); + int res = 0; + + switch (cmd) { + case SIOCGMIIPHY: + data->phy_id = R8152_PHY_ID; /* Internal PHY */ + break; + + case SIOCGMIIREG: + data->val_out = r8152_mdio_read(tp, data->reg_num); + break; + + case SIOCSMIIREG: + if (!capable(CAP_NET_ADMIN)) { + res = -EPERM; + break; + } + r8152_mdio_write(tp, data->reg_num, data->val_in); + break; + + default: + res = -EOPNOTSUPP; + } + + return res; +} + +static const struct net_device_ops rtl8152_netdev_ops = { + .ndo_open = rtl8152_open, + .ndo_stop = rtl8152_close, + .ndo_do_ioctl = rtl8152_ioctl, + .ndo_start_xmit = rtl8152_start_xmit, + .ndo_tx_timeout = rtl8152_tx_timeout, + .ndo_set_rx_mode = rtl8152_set_rx_mode, + .ndo_set_mac_address = rtl8152_set_mac_address, + + .ndo_change_mtu = eth_change_mtu, + .ndo_validate_addr = eth_validate_addr, +}; + +static void r8152b_get_version(struct r8152 *tp) +{ + u32 ocp_data; + u16 version; + + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_TCR1); + version = (u16)(ocp_data & VERSION_MASK); + + switch (version) { + case 0x4c00: + tp->version = RTL_VER_01; + break; + case 0x4c10: + tp->version = RTL_VER_02; + break; + default: + netif_info(tp, probe, tp->netdev, + "Unknown version 0x%04x\n", version); + break; + } +} + +static int rtl8152_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct usb_device *udev = interface_to_usbdev(intf); + struct r8152 *tp; + struct net_device *netdev; + + if (udev->actconfig->desc.bConfigurationValue != 1) { + usb_driver_set_configuration(udev, 1); + return -ENODEV; + } + + netdev = alloc_etherdev(sizeof(struct r8152)); + if (!netdev) { + dev_err(&intf->dev, "Out of memory"); + return -ENOMEM; + } + + tp = netdev_priv(netdev); + tp->msg_enable = 0x7FFF; + + tasklet_init(&tp->tl, rx_fixup, (unsigned long)tp); + INIT_DELAYED_WORK(&tp->schedule, rtl_work_func_t); + + tp->udev = udev; + tp->netdev = netdev; + netdev->netdev_ops = &rtl8152_netdev_ops; + netdev->watchdog_timeo = RTL8152_TX_TIMEOUT; + netdev->features &= ~NETIF_F_IP_CSUM; + SET_ETHTOOL_OPS(netdev, &ops); + tp->speed = 0; + + tp->mii.dev = netdev; + tp->mii.mdio_read = read_mii_word; + tp->mii.mdio_write = write_mii_word; + tp->mii.phy_id_mask = 0x3f; + tp->mii.reg_num_mask = 0x1f; + tp->mii.phy_id = R8152_PHY_ID; + tp->mii.supports_gmii = 0; + + r8152b_get_version(tp); + r8152b_init(tp); + set_ethernet_addr(tp); + + if (!alloc_all_urbs(tp)) { + netif_err(tp, probe, netdev, "out of memory"); + goto out; + } + + tp->rx_skb = netdev_alloc_skb(netdev, + RTL8152_RMS + sizeof(struct rx_desc)); + if (!tp->rx_skb) + goto out1; + + usb_set_intfdata(intf, tp); + SET_NETDEV_DEV(netdev, &intf->dev); + + + if (register_netdev(netdev) != 0) { + netif_err(tp, probe, netdev, "couldn't register the device"); + goto out2; + } + + netif_info(tp, probe, netdev, "%s", DRIVER_VERSION); + + return 0; + +out2: + usb_set_intfdata(intf, NULL); + dev_kfree_skb(tp->rx_skb); +out1: + free_all_urbs(tp); +out: + free_netdev(netdev); + return -EIO; +} + +static void rtl8152_unload(struct r8152 *tp) +{ + u32 ocp_data; + + if (tp->version != RTL_VER_01) { + ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_UPS_CTRL); + ocp_data |= POWER_CUT; + ocp_write_word(tp, MCU_TYPE_USB, USB_UPS_CTRL, ocp_data); + } + + ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_PM_CTRL_STATUS); + ocp_data &= ~RWSUME_INDICATE; + ocp_write_word(tp, MCU_TYPE_USB, USB_PM_CTRL_STATUS, ocp_data); +} + +static void rtl8152_disconnect(struct usb_interface *intf) +{ + struct r8152 *tp = usb_get_intfdata(intf); + + usb_set_intfdata(intf, NULL); + if (tp) { + set_bit(RTL8152_UNPLUG, &tp->flags); + tasklet_kill(&tp->tl); + unregister_netdev(tp->netdev); + rtl8152_unload(tp); + free_all_urbs(tp); + if (tp->rx_skb) + dev_kfree_skb(tp->rx_skb); + free_netdev(tp->netdev); + } +} + +/* table of devices that work with this driver */ +static struct usb_device_id rtl8152_table[] = { + {USB_DEVICE(VENDOR_ID_REALTEK, PRODUCT_ID_RTL8152)}, + {} +}; + +MODULE_DEVICE_TABLE(usb, rtl8152_table); + +static struct usb_driver rtl8152_driver = { + .name = MODULENAME, + .probe = rtl8152_probe, + .disconnect = rtl8152_disconnect, + .id_table = rtl8152_table, + .suspend = rtl8152_suspend, + .resume = rtl8152_resume +}; + +static int __init usb_rtl8152_init(void) +{ + return usb_register(&rtl8152_driver); +} + +static void __exit usb_rtl8152_exit(void) +{ + usb_deregister(&rtl8152_driver); +} + +module_init(usb_rtl8152_init); +module_exit(usb_rtl8152_exit); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); From cb4b102f0ab29fcbaf945c6b1f85ef006cdb8edc Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 6 May 2013 08:28:41 +0000 Subject: [PATCH 10/11] tipc: add a bounds check in link_recv_changeover_msg() The bearer_id here comes from skb->data and it can be a number from 0 to 7. The problem is that the ->links[] array has only 2 elements so I have added a range check. Signed-off-by: Dan Carpenter Signed-off-by: David S. Miller --- net/tipc/link.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/net/tipc/link.c b/net/tipc/link.c index daa6080a2a0c..3a6064b3d666 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -2306,8 +2306,11 @@ static int link_recv_changeover_msg(struct tipc_link **l_ptr, struct tipc_msg *tunnel_msg = buf_msg(tunnel_buf); u32 msg_typ = msg_type(tunnel_msg); u32 msg_count = msg_msgcnt(tunnel_msg); + u32 bearer_id = msg_bearer_id(tunnel_msg); - dest_link = (*l_ptr)->owner->links[msg_bearer_id(tunnel_msg)]; + if (bearer_id >= MAX_BEARERS) + goto exit; + dest_link = (*l_ptr)->owner->links[bearer_id]; if (!dest_link) goto exit; if (dest_link == *l_ptr) { From 6bf15191f666c5965d212561d7a5c7b78b808dfa Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 6 May 2013 09:31:17 +0000 Subject: [PATCH 11/11] tipc: potential divide by zero in tipc_link_recv_fragment() The worry here is that fragm_sz could be zero since it comes from skb->data. Signed-off-by: Dan Carpenter Signed-off-by: David S. Miller --- net/tipc/link.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/net/tipc/link.c b/net/tipc/link.c index 3a6064b3d666..a80feee5197a 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -2524,14 +2524,16 @@ int tipc_link_recv_fragment(struct sk_buff **pending, struct sk_buff **fb, struct tipc_msg *imsg = (struct tipc_msg *)msg_data(fragm); u32 msg_sz = msg_size(imsg); u32 fragm_sz = msg_data_sz(fragm); - u32 exp_fragm_cnt = msg_sz/fragm_sz + !!(msg_sz % fragm_sz); + u32 exp_fragm_cnt; u32 max = TIPC_MAX_USER_MSG_SIZE + NAMED_H_SIZE; + if (msg_type(imsg) == TIPC_MCAST_MSG) max = TIPC_MAX_USER_MSG_SIZE + MCAST_H_SIZE; - if (msg_size(imsg) > max) { + if (fragm_sz == 0 || msg_size(imsg) > max) { kfree_skb(fbuf); return 0; } + exp_fragm_cnt = msg_sz / fragm_sz + !!(msg_sz % fragm_sz); pbuf = tipc_buf_acquire(msg_size(imsg)); if (pbuf != NULL) { pbuf->next = *pending;