mptlan.c
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上传日期:2013-02-24
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文件大小:47k
- /*
- * linux/drivers/message/fusion/mptlan.c
- * IP Over Fibre Channel device driver.
- * For use with PCI chip/adapter(s):
- * LSIFC9xx/LSI409xx Fibre Channel
- * running LSI Logic Fusion MPT (Message Passing Technology) firmware.
- *
- * Credits:
- * This driver would not exist if not for Alan Cox's development
- * of the linux i2o driver.
- *
- * Special thanks goes to the I2O LAN driver people at the
- * University of Helsinki, who, unbeknownst to them, provided
- * the inspiration and initial structure for this driver.
- *
- * A huge debt of gratitude is owed to David S. Miller (DaveM)
- * for fixing much of the stupid and broken stuff in the early
- * driver while porting to sparc64 platform. THANK YOU!
- *
- * A really huge debt of gratitude is owed to Eddie C. Dost
- * for gobs of hard work fixing and optimizing LAN code.
- * THANK YOU!
- *
- * (see also mptbase.c)
- *
- * Copyright (c) 2000-2001 LSI Logic Corporation
- * Originally By: Noah Romer
- *
- * $Id: mptlan.c,v 1.32.2.2 2001/07/12 19:43:33 nromer Exp $
- */
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- /*
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; version 2 of the License.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- NO WARRANTY
- THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
- CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
- LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
- MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
- solely responsible for determining the appropriateness of using and
- distributing the Program and assumes all risks associated with its
- exercise of rights under this Agreement, including but not limited to
- the risks and costs of program errors, damage to or loss of data,
- programs or equipment, and unavailability or interruption of operations.
- DISCLAIMER OF LIABILITY
- NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
- DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), 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 OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
- HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- /*
- * Define statements used for debugging
- */
- //#define MPT_LAN_IO_DEBUG
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- #include "mptlan.h"
- #include <linux/init.h>
- #include <linux/module.h>
- #include <linux/fs.h>
- #define MYNAM "mptlan"
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- /*
- * MPT LAN message sizes without variable part.
- */
- #define MPT_LAN_RECEIVE_POST_REQUEST_SIZE
- (sizeof(LANReceivePostRequest_t) - sizeof(SGE_MPI_UNION))
- #define MPT_LAN_TRANSACTION32_SIZE
- (sizeof(SGETransaction32_t) - sizeof(u32))
- /*
- * Fusion MPT LAN private structures
- */
- struct NAA_Hosed {
- u16 NAA;
- u8 ieee[FC_ALEN];
- struct NAA_Hosed *next;
- };
- struct BufferControl {
- struct sk_buff *skb;
- dma_addr_t dma;
- unsigned int len;
- };
- struct mpt_lan_priv {
- MPT_ADAPTER *mpt_dev;
- u8 pnum; /* Port number in the IOC. This is not a Unix network port! */
- atomic_t buckets_out; /* number of unused buckets on IOC */
- int bucketthresh; /* Send more when this many used */
- int *mpt_txfidx; /* Free Tx Context list */
- int mpt_txfidx_tail;
- spinlock_t txfidx_lock;
- int *mpt_rxfidx; /* Free Rx Context list */
- int mpt_rxfidx_tail;
- spinlock_t rxfidx_lock;
- struct BufferControl *RcvCtl; /* Receive BufferControl structs */
- struct BufferControl *SendCtl; /* Send BufferControl structs */
- int max_buckets_out; /* Max buckets to send to IOC */
- int tx_max_out; /* IOC's Tx queue len */
- u32 total_posted;
- u32 total_received;
- struct net_device_stats stats; /* Per device statistics */
- struct tq_struct post_buckets_task;
- unsigned long post_buckets_active;
- };
- struct mpt_lan_ohdr {
- u16 dtype;
- u8 daddr[FC_ALEN];
- u16 stype;
- u8 saddr[FC_ALEN];
- };
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- /*
- * Forward protos...
- */
- static int lan_reply (MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf,
- MPT_FRAME_HDR *reply);
- static int mpt_lan_open(struct net_device *dev);
- static int mpt_lan_reset(struct net_device *dev);
- static int mpt_lan_close(struct net_device *dev);
- static void mpt_lan_post_receive_buckets(void *dev_id);
- static void mpt_lan_wake_post_buckets_task(struct net_device *dev);
- static int mpt_lan_receive_post_turbo(struct net_device *dev, u32 tmsg);
- static int mpt_lan_receive_post_reply(struct net_device *dev,
- LANReceivePostReply_t *pRecvRep);
- static int mpt_lan_send_turbo(struct net_device *dev, u32 tmsg);
- static int mpt_lan_send_reply(struct net_device *dev,
- LANSendReply_t *pSendRep);
- static int mpt_lan_ioc_reset(MPT_ADAPTER *ioc, int reset_phase);
- static int mpt_lan_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply);
- static unsigned short mpt_lan_type_trans(struct sk_buff *skb,
- struct net_device *dev);
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- /*
- * Fusion MPT LAN private data
- */
- static int LanCtx = -1;
- static u32 max_buckets_out = 127;
- static u32 tx_max_out_p = 127 - 16;
- static struct net_device *mpt_landev[MPT_MAX_ADAPTERS+1];
- static struct NAA_Hosed *mpt_bad_naa = NULL;
- rwlock_t bad_naa_lock;
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- /*
- * Fusion MPT LAN external data
- */
- extern int mpt_lan_index;
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- /**
- * lan_reply - Handle all data sent from the hardware.
- * @ioc: Pointer to MPT_ADAPTER structure
- * @mf: Pointer to original MPT request frame (NULL if TurboReply)
- * @reply: Pointer to MPT reply frame
- *
- * Returns 1 indicating original alloc'd request frame ptr
- * should be freed, or 0 if it shouldn't.
- */
- static int
- lan_reply (MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *reply)
- {
- struct net_device *dev = mpt_landev[ioc->id];
- int FreeReqFrame = 0;
- dioprintk((KERN_INFO MYNAM ": %s/%s: Got reply.n",
- IOC_AND_NETDEV_NAMES_s_s(dev)));
- // dioprintk((KERN_INFO MYNAM "@lan_reply: mf = %p, reply = %pn",
- // mf, reply));
- if (mf == NULL) {
- u32 tmsg = CAST_PTR_TO_U32(reply);
- dioprintk((KERN_INFO MYNAM ": %s/%s: @lan_reply, tmsg %08xn",
- IOC_AND_NETDEV_NAMES_s_s(dev),
- tmsg));
- switch (GET_LAN_FORM(tmsg)) {
- // NOTE! (Optimization) First case here is now caught in
- // mptbase.c::mpt_interrupt() routine and callcack here
- // is now skipped for this case! 20001218 -sralston
- #if 0
- case LAN_REPLY_FORM_MESSAGE_CONTEXT:
- // dioprintk((KERN_INFO MYNAM "/lan_reply: "
- // "MessageContext turbo reply receivedn"));
- FreeReqFrame = 1;
- break;
- #endif
- case LAN_REPLY_FORM_SEND_SINGLE:
- // dioprintk((MYNAM "/lan_reply: "
- // "calling mpt_lan_send_reply (turbo)n"));
-
- // Potential BUG here? -sralston
- // FreeReqFrame = mpt_lan_send_turbo(dev, tmsg);
- // If/when mpt_lan_send_turbo would return 1 here,
- // calling routine (mptbase.c|mpt_interrupt)
- // would Oops because mf has already been set
- // to NULL. So after return from this func,
- // mpt_interrupt() will attempt to put (NULL) mf ptr
- // item back onto it's adapter FreeQ - Oops!:-(
- // It's Ok, since mpt_lan_send_turbo() *currently*
- // always returns 0, but..., just in case:
- (void) mpt_lan_send_turbo(dev, tmsg);
- FreeReqFrame = 0;
- break;
- case LAN_REPLY_FORM_RECEIVE_SINGLE:
- // dioprintk((KERN_INFO MYNAM "@lan_reply: "
- // "rcv-Turbo = %08xn", tmsg));
- mpt_lan_receive_post_turbo(dev, tmsg);
- break;
- default:
- printk (KERN_ERR MYNAM "/lan_reply: Got a turbo reply "
- "that I don't know what to do withn");
- /* CHECKME! Hmmm... FreeReqFrame is 0 here; is that right? */
- break;
- }
- return FreeReqFrame;
- }
- // msg = (u32 *) reply;
- // dioprintk((KERN_INFO MYNAM "@lan_reply: msg = %08x %08x %08x %08xn",
- // le32_to_cpu(msg[0]), le32_to_cpu(msg[1]),
- // le32_to_cpu(msg[2]), le32_to_cpu(msg[3])));
- // dioprintk((KERN_INFO MYNAM "@lan_reply: Function = %02xhn",
- // reply->u.hdr.Function));
- switch (reply->u.hdr.Function) {
- case MPI_FUNCTION_LAN_SEND:
- {
- LANSendReply_t *pSendRep;
- pSendRep = (LANSendReply_t *) reply;
- FreeReqFrame = mpt_lan_send_reply(dev, pSendRep);
- break;
- }
- case MPI_FUNCTION_LAN_RECEIVE:
- {
- LANReceivePostReply_t *pRecvRep;
- pRecvRep = (LANReceivePostReply_t *) reply;
- if (pRecvRep->NumberOfContexts) {
- mpt_lan_receive_post_reply(dev, pRecvRep);
- if (!(pRecvRep->MsgFlags & MPI_MSGFLAGS_CONTINUATION_REPLY))
- FreeReqFrame = 1;
- } else
- dioprintk((KERN_INFO MYNAM "@lan_reply: zero context "
- "ReceivePostReply received.n"));
- break;
- }
- case MPI_FUNCTION_LAN_RESET:
- /* Just a default reply. Might want to check it to
- * make sure that everything went ok.
- */
- FreeReqFrame = 1;
- break;
- case MPI_FUNCTION_EVENT_NOTIFICATION:
- case MPI_FUNCTION_EVENT_ACK:
- /* UPDATE! 20010120 -sralston
- * _EVENT_NOTIFICATION should NOT come down this path any more.
- * Should be routed to mpt_lan_event_process(), but just in case...
- */
- FreeReqFrame = 1;
- break;
- default:
- printk (KERN_ERR MYNAM "/lan_reply: Got a non-turbo "
- "reply that I don't know what to do withn");
- /* CHECKME! Hmmm... FreeReqFrame is 0 here; is that right? */
- FreeReqFrame = 1;
- break;
- }
- return FreeReqFrame;
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- static int
- mpt_lan_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
- {
- struct net_device *dev = mpt_landev[ioc->id];
- struct mpt_lan_priv *priv = (struct mpt_lan_priv *) dev->priv;
- dprintk((KERN_INFO MYNAM ": IOC %s_reset routed to LAN driver!n",
- reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post"));
- if (priv->mpt_rxfidx == NULL)
- return (1);
- if (reset_phase == MPT_IOC_PRE_RESET) {
- int i;
- unsigned long flags;
-
- netif_stop_queue(dev);
- atomic_set(&priv->buckets_out, 0);
- /* Reset Rx Free Tail index and re-populate the queue. */
- spin_lock_irqsave(&priv->rxfidx_lock, flags);
- priv->mpt_rxfidx_tail = -1;
- for (i = 0; i < priv->max_buckets_out; i++)
- priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = i;
- spin_unlock_irqrestore(&priv->rxfidx_lock, flags);
- } else {
- mpt_lan_post_receive_buckets(dev);
- netif_wake_queue(dev);
- }
- return 1;
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- static int
- mpt_lan_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
- {
- dprintk((KERN_INFO MYNAM ": MPT event routed to LAN driver!n"));
- switch (le32_to_cpu(pEvReply->Event)) {
- case MPI_EVENT_NONE: /* 00 */
- case MPI_EVENT_LOG_DATA: /* 01 */
- case MPI_EVENT_STATE_CHANGE: /* 02 */
- case MPI_EVENT_UNIT_ATTENTION: /* 03 */
- case MPI_EVENT_IOC_BUS_RESET: /* 04 */
- case MPI_EVENT_EXT_BUS_RESET: /* 05 */
- case MPI_EVENT_RESCAN: /* 06 */
- /* Ok, do we need to do anything here? As far as
- I can tell, this is when a new device gets added
- to the loop. */
- case MPI_EVENT_LINK_STATUS_CHANGE: /* 07 */
- case MPI_EVENT_LOOP_STATE_CHANGE: /* 08 */
- case MPI_EVENT_LOGOUT: /* 09 */
- case MPI_EVENT_EVENT_CHANGE: /* 0A */
- default:
- break;
- }
- /*
- * NOTE: pEvent->AckRequired handling now done in mptbase.c;
- * Do NOT do it here now!
- */
- return 1;
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- static int
- mpt_lan_open(struct net_device *dev)
- {
- struct mpt_lan_priv *priv = (struct mpt_lan_priv *) dev->priv;
- int i;
- if (mpt_lan_reset(dev) != 0) {
- MPT_ADAPTER *mpt_dev = priv->mpt_dev;
-
- printk (KERN_WARNING MYNAM "/lan_open: lan_reset failed.");
-
- if (mpt_dev->active)
- printk ("The ioc is active. Perhaps it needs to be"
- " reset?n");
- else
- printk ("The ioc in inactive, most likely in the "
- "process of being reset. Please try again in "
- "a moment.n");
- }
- priv->mpt_txfidx = kmalloc(priv->tx_max_out * sizeof(int), GFP_KERNEL);
- if (priv->mpt_txfidx == NULL)
- goto out;
- priv->mpt_txfidx_tail = -1;
- priv->SendCtl = kmalloc(priv->tx_max_out * sizeof(struct BufferControl),
- GFP_KERNEL);
- if (priv->SendCtl == NULL)
- goto out_mpt_txfidx;
- for (i = 0; i < priv->tx_max_out; i++) {
- memset(&priv->SendCtl[i], 0, sizeof(struct BufferControl));
- priv->mpt_txfidx[++priv->mpt_txfidx_tail] = i;
- }
- dprintk((KERN_INFO MYNAM "@lo: Finished initializing SendCtln"));
- priv->mpt_rxfidx = kmalloc(priv->max_buckets_out * sizeof(int),
- GFP_KERNEL);
- if (priv->mpt_rxfidx == NULL)
- goto out_SendCtl;
- priv->mpt_rxfidx_tail = -1;
- priv->RcvCtl = kmalloc(priv->max_buckets_out *
- sizeof(struct BufferControl),
- GFP_KERNEL);
- if (priv->RcvCtl == NULL)
- goto out_mpt_rxfidx;
- for (i = 0; i < priv->max_buckets_out; i++) {
- memset(&priv->RcvCtl[i], 0, sizeof(struct BufferControl));
- priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = i;
- }
- /**/ dprintk((KERN_INFO MYNAM "/lo: txfidx contains - "));
- /**/ for (i = 0; i < priv->tx_max_out; i++)
- /**/ dprintk((" %xh", priv->mpt_txfidx[i]));
- /**/ dprintk(("n"));
- dprintk((KERN_INFO MYNAM "/lo: Finished initializing RcvCtln"));
- mpt_lan_post_receive_buckets(dev);
- printk(KERN_INFO MYNAM ": %s/%s: interface up & activen",
- IOC_AND_NETDEV_NAMES_s_s(dev));
- if (mpt_event_register(LanCtx, mpt_lan_event_process) != 0) {
- printk (KERN_WARNING MYNAM "/lo: Unable to register for Event"
- " Notifications. This is a bad thing! We're not going "
- "to go ahead, but I'd be leery of system stability at "
- "this point.n");
- }
- netif_start_queue(dev);
- dprintk((KERN_INFO MYNAM "/lo: Done.n"));
- return 0;
- out_mpt_rxfidx:
- kfree(priv->mpt_rxfidx);
- priv->mpt_rxfidx = NULL;
- out_SendCtl:
- kfree(priv->SendCtl);
- priv->SendCtl = NULL;
- out_mpt_txfidx:
- kfree(priv->mpt_txfidx);
- priv->mpt_txfidx = NULL;
- out: return -ENOMEM;
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- /* Send a LanReset message to the FW. This should result in the FW returning
- any buckets it still has. */
- static int
- mpt_lan_reset(struct net_device *dev)
- {
- MPT_FRAME_HDR *mf;
- LANResetRequest_t *pResetReq;
- struct mpt_lan_priv *priv = (struct mpt_lan_priv *)dev->priv;
- mf = mpt_get_msg_frame(LanCtx, priv->mpt_dev->id);
- if (mf == NULL) {
- /* dprintk((KERN_ERR MYNAM "/reset: Evil funkiness abounds! "
- "Unable to allocate a request frame.n"));
- */
- return -1;
- }
- pResetReq = (LANResetRequest_t *) mf;
- pResetReq->Function = MPI_FUNCTION_LAN_RESET;
- pResetReq->ChainOffset = 0;
- pResetReq->Reserved = 0;
- pResetReq->PortNumber = priv->pnum;
- pResetReq->MsgFlags = 0;
- pResetReq->Reserved2 = 0;
- mpt_put_msg_frame(LanCtx, priv->mpt_dev->id, mf);
- return 0;
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- static int
- mpt_lan_close(struct net_device *dev)
- {
- struct mpt_lan_priv *priv = (struct mpt_lan_priv *) dev->priv;
- MPT_ADAPTER *mpt_dev = priv->mpt_dev;
- unsigned int timeout;
- int i;
- dprintk((KERN_INFO MYNAM ": mpt_lan_close calledn"));
- mpt_event_deregister(LanCtx);
- dprintk((KERN_INFO MYNAM ":lan_close: Posted %d buckets "
- "since driver was loaded, %d still outn",
- priv->total_posted,atomic_read(&priv->buckets_out)));
- netif_stop_queue(dev);
- mpt_lan_reset(dev);
- timeout = 2 * HZ;
- while (atomic_read(&priv->buckets_out) && --timeout) {
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(1);
- }
- for (i = 0; i < priv->max_buckets_out; i++) {
- if (priv->RcvCtl[i].skb != NULL) {
- /**/ dprintk((KERN_INFO MYNAM "/lan_close: bucket %05x "
- /**/ "is still outn", i));
- pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[i].dma,
- priv->RcvCtl[i].len,
- PCI_DMA_FROMDEVICE);
- dev_kfree_skb(priv->RcvCtl[i].skb);
- }
- }
- kfree (priv->RcvCtl);
- kfree (priv->mpt_rxfidx);
- for (i = 0; i < priv->tx_max_out; i++) {
- if (priv->SendCtl[i].skb != NULL) {
- pci_unmap_single(mpt_dev->pcidev, priv->SendCtl[i].dma,
- priv->SendCtl[i].len,
- PCI_DMA_TODEVICE);
- dev_kfree_skb(priv->SendCtl[i].skb);
- }
- }
- kfree(priv->SendCtl);
- kfree(priv->mpt_txfidx);
- atomic_set(&priv->buckets_out, 0);
- printk(KERN_INFO MYNAM ": %s/%s: interface down & inactiven",
- IOC_AND_NETDEV_NAMES_s_s(dev));
- return 0;
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- static struct net_device_stats *
- mpt_lan_get_stats(struct net_device *dev)
- {
- struct mpt_lan_priv *priv = (struct mpt_lan_priv *)dev->priv;
- return (struct net_device_stats *) &priv->stats;
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- static int
- mpt_lan_change_mtu(struct net_device *dev, int new_mtu)
- {
- if ((new_mtu < MPT_LAN_MIN_MTU) || (new_mtu > MPT_LAN_MAX_MTU))
- return -EINVAL;
- dev->mtu = new_mtu;
- return 0;
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- /* Tx timeout handler. */
- static void
- mpt_lan_tx_timeout(struct net_device *dev)
- {
- netif_wake_queue(dev);
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- //static inline int
- static int
- mpt_lan_send_turbo(struct net_device *dev, u32 tmsg)
- {
- struct mpt_lan_priv *priv = (struct mpt_lan_priv *) dev->priv;
- MPT_ADAPTER *mpt_dev = priv->mpt_dev;
- struct sk_buff *sent;
- unsigned long flags;
- u32 ctx;
- ctx = GET_LAN_BUFFER_CONTEXT(tmsg);
- sent = priv->SendCtl[ctx].skb;
- priv->stats.tx_packets++;
- priv->stats.tx_bytes += sent->len;
- dioprintk((KERN_INFO MYNAM ": %s/%s: @%s, skb %p sent.n",
- IOC_AND_NETDEV_NAMES_s_s(dev),
- __FUNCTION__, sent));
- priv->SendCtl[ctx].skb = NULL;
- pci_unmap_single(mpt_dev->pcidev, priv->SendCtl[ctx].dma,
- priv->SendCtl[ctx].len, PCI_DMA_TODEVICE);
- dev_kfree_skb_irq(sent);
- spin_lock_irqsave(&priv->txfidx_lock, flags);
- priv->mpt_txfidx[++priv->mpt_txfidx_tail] = ctx;
- spin_unlock_irqrestore(&priv->txfidx_lock, flags);
- netif_wake_queue(dev);
- return 0;
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- static int
- mpt_lan_send_reply(struct net_device *dev, LANSendReply_t *pSendRep)
- {
- struct mpt_lan_priv *priv = (struct mpt_lan_priv *) dev->priv;
- MPT_ADAPTER *mpt_dev = priv->mpt_dev;
- struct sk_buff *sent;
- unsigned long flags;
- int FreeReqFrame = 0;
- u32 *pContext;
- u32 ctx;
- u8 count;
- count = pSendRep->NumberOfContexts;
- dioprintk((KERN_INFO MYNAM ": send_reply: IOCStatus: %04xn",
- le16_to_cpu(pSendRep->IOCStatus)));
- /* Add check for Loginfo Flag in IOCStatus */
- switch (le16_to_cpu(pSendRep->IOCStatus)) {
- case MPI_IOCSTATUS_SUCCESS:
- priv->stats.tx_packets += count;
- break;
- case MPI_IOCSTATUS_LAN_CANCELED:
- case MPI_IOCSTATUS_LAN_TRANSMIT_ABORTED:
- break;
- case MPI_IOCSTATUS_INVALID_SGL:
- priv->stats.tx_errors += count;
- printk (KERN_ERR MYNAM ": %s/%s: ERROR - Invalid SGL sent to IOC!n",
- IOC_AND_NETDEV_NAMES_s_s(dev));
- goto out;
- default:
- priv->stats.tx_errors += count;
- break;
- }
- pContext = &pSendRep->BufferContext;
- spin_lock_irqsave(&priv->txfidx_lock, flags);
- while (count > 0) {
- ctx = GET_LAN_BUFFER_CONTEXT(le32_to_cpu(*pContext));
- sent = priv->SendCtl[ctx].skb;
- priv->stats.tx_bytes += sent->len;
- dioprintk((KERN_INFO MYNAM ": %s/%s: @%s, skb %p sent.n",
- IOC_AND_NETDEV_NAMES_s_s(dev),
- __FUNCTION__, sent));
- priv->SendCtl[ctx].skb = NULL;
- pci_unmap_single(mpt_dev->pcidev, priv->SendCtl[ctx].dma,
- priv->SendCtl[ctx].len, PCI_DMA_TODEVICE);
- dev_kfree_skb_irq(sent);
- priv->mpt_txfidx[++priv->mpt_txfidx_tail] = ctx;
- pContext++;
- count--;
- }
- spin_unlock_irqrestore(&priv->txfidx_lock, flags);
- out:
- if (!(pSendRep->MsgFlags & MPI_MSGFLAGS_CONTINUATION_REPLY))
- FreeReqFrame = 1;
- netif_wake_queue(dev);
- return FreeReqFrame;
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- static int
- mpt_lan_sdu_send (struct sk_buff *skb, struct net_device *dev)
- {
- struct mpt_lan_priv *priv = (struct mpt_lan_priv *) dev->priv;
- MPT_ADAPTER *mpt_dev = priv->mpt_dev;
- MPT_FRAME_HDR *mf;
- LANSendRequest_t *pSendReq;
- SGETransaction32_t *pTrans;
- SGESimple64_t *pSimple;
- dma_addr_t dma;
- unsigned long flags;
- int ctx;
- struct NAA_Hosed *nh;
- u16 cur_naa = 0x1000;
- dioprintk((KERN_INFO MYNAM ": %s called, skb_addr = %pn",
- __FUNCTION__, skb));
- spin_lock_irqsave(&priv->txfidx_lock, flags);
- if (priv->mpt_txfidx_tail < 0) {
- netif_stop_queue(dev);
- spin_unlock_irqrestore(&priv->txfidx_lock, flags);
- printk (KERN_ERR "%s: no tx context available: %un",
- __FUNCTION__, priv->mpt_txfidx_tail);
- return 1;
- }
- mf = mpt_get_msg_frame(LanCtx, mpt_dev->id);
- if (mf == NULL) {
- netif_stop_queue(dev);
- dev_kfree_skb(skb);
- spin_unlock_irqrestore(&priv->txfidx_lock, flags);
- printk (KERN_ERR "%s: Unable to alloc request framen",
- __FUNCTION__);
- return 1;
- }
- ctx = priv->mpt_txfidx[priv->mpt_txfidx_tail--];
- spin_unlock_irqrestore(&priv->txfidx_lock, flags);
- // dioprintk((KERN_INFO MYNAM ": %s/%s: Creating new msg frame (send).n",
- // IOC_AND_NETDEV_NAMES_s_s(dev)));
- pSendReq = (LANSendRequest_t *) mf;
- /* Set the mac.raw pointer, since this apparently isn't getting
- * done before we get the skb. Pull the data pointer past the mac data.
- */
- skb->mac.raw = skb->data;
- skb_pull(skb, 12);
- dma = pci_map_single(mpt_dev->pcidev, skb->data, skb->len,
- PCI_DMA_TODEVICE);
- priv->SendCtl[ctx].skb = skb;
- priv->SendCtl[ctx].dma = dma;
- priv->SendCtl[ctx].len = skb->len;
- /* Message Header */
- pSendReq->Reserved = 0;
- pSendReq->Function = MPI_FUNCTION_LAN_SEND;
- pSendReq->ChainOffset = 0;
- pSendReq->Reserved2 = 0;
- pSendReq->MsgFlags = 0;
- pSendReq->PortNumber = priv->pnum;
- /* Transaction Context Element */
- pTrans = (SGETransaction32_t *) pSendReq->SG_List;
- /* No Flags, 8 bytes of Details, 32bit Context (bloody turbo replies) */
- pTrans->ContextSize = sizeof(u32);
- pTrans->DetailsLength = 2 * sizeof(u32);
- pTrans->Flags = 0;
- pTrans->TransactionContext[0] = cpu_to_le32(ctx);
- // dioprintk((KERN_INFO MYNAM ": %s/%s: BC = %08x, skb = %p, buff = %pn",
- // IOC_AND_NETDEV_NAMES_s_s(dev),
- // ctx, skb, skb->data));
- /* Munge the NAA for Tx packets to QLogic boards, which don't follow
- RFC 2625. The longer I look at this, the more my opinion of Qlogic
- drops. */
- read_lock_irq(&bad_naa_lock);
- for (nh = mpt_bad_naa; nh != NULL; nh=nh->next) {
- if ((nh->ieee[0] == skb->mac.raw[0]) &&
- (nh->ieee[1] == skb->mac.raw[1]) &&
- (nh->ieee[2] == skb->mac.raw[2]) &&
- (nh->ieee[3] == skb->mac.raw[3]) &&
- (nh->ieee[4] == skb->mac.raw[4]) &&
- (nh->ieee[5] == skb->mac.raw[5])) {
- cur_naa = nh->NAA;
- dprintk ((KERN_INFO "mptlan/sdu_send: using NAA value "
- "= %04x.n", cur_naa));
- break;
- }
- }
- read_unlock_irq(&bad_naa_lock);
- pTrans->TransactionDetails[0] = cpu_to_le32((cur_naa << 16) |
- (skb->mac.raw[0] << 8) |
- (skb->mac.raw[1] << 0));
- pTrans->TransactionDetails[1] = cpu_to_le32((skb->mac.raw[2] << 24) |
- (skb->mac.raw[3] << 16) |
- (skb->mac.raw[4] << 8) |
- (skb->mac.raw[5] << 0));
- pSimple = (SGESimple64_t *) &pTrans->TransactionDetails[2];
- /* If we ever decide to send more than one Simple SGE per LANSend, then
- we will need to make sure that LAST_ELEMENT only gets set on the
- last one. Otherwise, bad voodoo and evil funkiness will commence. */
- pSimple->FlagsLength = cpu_to_le32(
- ((MPI_SGE_FLAGS_LAST_ELEMENT |
- MPI_SGE_FLAGS_END_OF_BUFFER |
- MPI_SGE_FLAGS_SIMPLE_ELEMENT |
- MPI_SGE_FLAGS_SYSTEM_ADDRESS |
- MPI_SGE_FLAGS_HOST_TO_IOC |
- MPI_SGE_FLAGS_64_BIT_ADDRESSING |
- MPI_SGE_FLAGS_END_OF_LIST) << MPI_SGE_FLAGS_SHIFT) |
- skb->len);
- pSimple->Address.Low = cpu_to_le32((u32) dma);
- if (sizeof(dma_addr_t) > sizeof(u32))
- pSimple->Address.High = cpu_to_le32((u32) ((u64) dma >> 32));
- else
- pSimple->Address.High = 0;
- mpt_put_msg_frame (LanCtx, mpt_dev->id, mf);
- dev->trans_start = jiffies;
- dioprintk((KERN_INFO MYNAM ": %s/%s: Sending packet. FlagsLength = %08x.n",
- IOC_AND_NETDEV_NAMES_s_s(dev),
- le32_to_cpu(pSimple->FlagsLength)));
- return 0;
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- static inline void
- mpt_lan_wake_post_buckets_task(struct net_device *dev)
- {
- struct mpt_lan_priv *priv = dev->priv;
- if (test_and_set_bit(0, &priv->post_buckets_active) == 0) {
- queue_task(&priv->post_buckets_task, &tq_immediate);
- mark_bh(IMMEDIATE_BH);
- dioprintk((KERN_INFO MYNAM ": %s/%s: Queued post_buckets task.n",
- IOC_AND_NETDEV_NAMES_s_s(dev) ));
- }
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- static inline int
- mpt_lan_receive_skb(struct net_device *dev, struct sk_buff *skb)
- {
- struct mpt_lan_priv *priv = dev->priv;
- skb->protocol = mpt_lan_type_trans(skb, dev);
- dioprintk((KERN_INFO MYNAM ": %s/%s: Incoming packet (%d bytes) "
- "delivered to upper level.n",
- IOC_AND_NETDEV_NAMES_s_s(dev), skb->len));
- priv->stats.rx_bytes += skb->len;
- priv->stats.rx_packets++;
- skb->dev = dev;
- netif_rx(skb);
- dioprintk((MYNAM "/receive_skb: %d buckets remainingn",
- atomic_read(&priv->buckets_out)));
- if (atomic_read(&priv->buckets_out) < priv->bucketthresh)
- mpt_lan_wake_post_buckets_task(dev);
- dioprintk((KERN_INFO MYNAM "/receive_post_reply: %d buckets "
- "remaining, %d received back since sodn",
- atomic_read(&priv->buckets_out), priv->total_received));
- return 0;
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- //static inline int
- static int
- mpt_lan_receive_post_turbo(struct net_device *dev, u32 tmsg)
- {
- struct mpt_lan_priv *priv = dev->priv;
- MPT_ADAPTER *mpt_dev = priv->mpt_dev;
- struct sk_buff *skb, *old_skb;
- unsigned long flags;
- u32 ctx, len;
- ctx = GET_LAN_BUCKET_CONTEXT(tmsg);
- skb = priv->RcvCtl[ctx].skb;
- len = GET_LAN_PACKET_LENGTH(tmsg);
- if (len < MPT_LAN_RX_COPYBREAK) {
- old_skb = skb;
- skb = (struct sk_buff *)dev_alloc_skb(len);
- if (!skb) {
- printk (KERN_ERR MYNAM ": %s/%s: ERROR - Can't allocate skb! (%s@%d)n",
- IOC_AND_NETDEV_NAMES_s_s(dev),
- __FILE__, __LINE__);
- return -ENOMEM;
- }
- pci_dma_sync_single(mpt_dev->pcidev, priv->RcvCtl[ctx].dma,
- priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE);
- memcpy(skb_put(skb, len), old_skb->data, len);
- goto out;
- }
- skb_put(skb, len);
- priv->RcvCtl[ctx].skb = NULL;
- pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[ctx].dma,
- priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE);
- out:
- spin_lock_irqsave(&priv->rxfidx_lock, flags);
- priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx;
- spin_unlock_irqrestore(&priv->rxfidx_lock, flags);
- atomic_dec(&priv->buckets_out);
- priv->total_received++;
- return mpt_lan_receive_skb(dev, skb);
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- static int
- mpt_lan_receive_post_free(struct net_device *dev,
- LANReceivePostReply_t *pRecvRep)
- {
- struct mpt_lan_priv *priv = dev->priv;
- MPT_ADAPTER *mpt_dev = priv->mpt_dev;
- unsigned long flags;
- struct sk_buff *skb;
- u32 ctx;
- u8 count;
- int i;
- count = pRecvRep->NumberOfContexts;
- /**/ dprintk((KERN_INFO MYNAM "/receive_post_reply: "
- "IOC returned %d buckets, freeing them...n", count));
- spin_lock_irqsave(&priv->rxfidx_lock, flags);
- for (i = 0; i < count; i++) {
- ctx = le32_to_cpu(pRecvRep->BucketContext[i]);
- skb = priv->RcvCtl[ctx].skb;
- // dprintk((KERN_INFO MYNAM ": %s: dev_name = %sn",
- // IOC_AND_NETDEV_NAMES_s_s(dev)));
- // dprintk((KERN_INFO MYNAM "@rpr[2], priv = %p, buckets_out addr = %p",
- // priv, &(priv->buckets_out)));
- // dprintk((KERN_INFO MYNAM "@rpr[2] TC + 3n"));
- priv->RcvCtl[ctx].skb = NULL;
- pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[ctx].dma,
- priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE);
- dev_kfree_skb_any(skb);
- priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx;
- }
- spin_unlock_irqrestore(&priv->rxfidx_lock, flags);
- atomic_sub(count, &priv->buckets_out);
- // for (i = 0; i < priv->max_buckets_out; i++)
- // if (priv->RcvCtl[i].skb != NULL)
- // dprintk((KERN_INFO MYNAM "@rpr: bucket %03x "
- // "is still outn", i));
- /* dprintk((KERN_INFO MYNAM "/receive_post_reply: freed %d bucketsn",
- count));
- */
- /**/ dprintk((KERN_INFO MYNAM "@receive_post_reply: %d buckets "
- /**/ "remaining, %d received back since sod.n",
- /**/ atomic_read(&priv->buckets_out), priv->total_received));
- return 0;
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- static int
- mpt_lan_receive_post_reply(struct net_device *dev,
- LANReceivePostReply_t *pRecvRep)
- {
- struct mpt_lan_priv *priv = dev->priv;
- MPT_ADAPTER *mpt_dev = priv->mpt_dev;
- struct sk_buff *skb, *old_skb;
- unsigned long flags;
- u32 len, ctx;
- u32 offset;
- u8 count;
- int i, l;
- dioprintk((KERN_INFO MYNAM ": mpt_lan_receive_post_reply calledn"));
- dioprintk((KERN_INFO MYNAM ": receive_post_reply: IOCStatus: %04xn",
- le16_to_cpu(pRecvRep->IOCStatus)));
- if (le16_to_cpu(pRecvRep->IOCStatus) & MPI_IOCSTATUS_LAN_CANCELED)
- return mpt_lan_receive_post_free(dev, pRecvRep);
- len = le32_to_cpu(pRecvRep->PacketLength);
- if (len == 0) {
- printk (KERN_ERR MYNAM ": %s/%s: ERROR - Got a non-TURBO "
- "ReceivePostReply w/ PacketLength zero!n",
- IOC_AND_NETDEV_NAMES_s_s(dev));
- printk (KERN_ERR MYNAM ": MsgFlags = %02x, IOCStatus = %04xn",
- pRecvRep->MsgFlags, le16_to_cpu(pRecvRep->IOCStatus));
- return -1;
- }
- ctx = le32_to_cpu(pRecvRep->BucketContext[0]);
- count = pRecvRep->NumberOfContexts;
- skb = priv->RcvCtl[ctx].skb;
- offset = le32_to_cpu(pRecvRep->PacketOffset);
- // if (offset != 0) {
- // printk (KERN_INFO MYNAM ": %s/%s: Got a ReceivePostReply "
- // "w/ PacketOffset %un",
- // IOC_AND_NETDEV_NAMES_s_s(dev),
- // offset);
- // }
- dioprintk((KERN_INFO MYNAM ": %s/%s: @rpr, offset = %d, len = %dn",
- IOC_AND_NETDEV_NAMES_s_s(dev),
- offset, len));
- if (count > 1) {
- int szrem = len;
- // dioprintk((KERN_INFO MYNAM ": %s/%s: Multiple buckets returned "
- // "for single packet, concatenating...n",
- // IOC_AND_NETDEV_NAMES_s_s(dev)));
- skb = (struct sk_buff *)dev_alloc_skb(len);
- if (!skb) {
- printk (KERN_ERR MYNAM ": %s/%s: ERROR - Can't allocate skb! (%s@%d)n",
- IOC_AND_NETDEV_NAMES_s_s(dev),
- __FILE__, __LINE__);
- return -ENOMEM;
- }
- spin_lock_irqsave(&priv->rxfidx_lock, flags);
- for (i = 0; i < count; i++) {
- ctx = le32_to_cpu(pRecvRep->BucketContext[i]);
- old_skb = priv->RcvCtl[ctx].skb;
- l = priv->RcvCtl[ctx].len;
- if (szrem < l)
- l = szrem;
- // dioprintk((KERN_INFO MYNAM ": %s/%s: Buckets = %d, len = %un",
- // IOC_AND_NETDEV_NAMES_s_s(dev),
- // i, l));
- pci_dma_sync_single(mpt_dev->pcidev,
- priv->RcvCtl[ctx].dma,
- priv->RcvCtl[ctx].len,
- PCI_DMA_FROMDEVICE);
- memcpy(skb_put(skb, l), old_skb->data, l);
- priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx;
- szrem -= l;
- }
- spin_unlock_irqrestore(&priv->rxfidx_lock, flags);
- } else if (len < MPT_LAN_RX_COPYBREAK) {
- old_skb = skb;
- skb = (struct sk_buff *)dev_alloc_skb(len);
- if (!skb) {
- printk (KERN_ERR MYNAM ": %s/%s: ERROR - Can't allocate skb! (%s@%d)n",
- IOC_AND_NETDEV_NAMES_s_s(dev),
- __FILE__, __LINE__);
- return -ENOMEM;
- }
- pci_dma_sync_single(mpt_dev->pcidev, priv->RcvCtl[ctx].dma,
- priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE);
- memcpy(skb_put(skb, len), old_skb->data, len);
- spin_lock_irqsave(&priv->rxfidx_lock, flags);
- priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx;
- spin_unlock_irqrestore(&priv->rxfidx_lock, flags);
- } else {
- spin_lock_irqsave(&priv->rxfidx_lock, flags);
- priv->RcvCtl[ctx].skb = NULL;
- pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[ctx].dma,
- priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE);
- priv->RcvCtl[ctx].dma = 0;
- priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx;
- spin_unlock_irqrestore(&priv->rxfidx_lock, flags);
- skb_put(skb,len);
- }
- atomic_sub(count, &priv->buckets_out);
- priv->total_received += count;
- if (priv->mpt_rxfidx_tail >= MPT_LAN_MAX_BUCKETS_OUT) {
- printk (KERN_ERR MYNAM ": %s/%s: Yoohoo! mpt_rxfidx_tail = %d, "
- "MPT_LAN_MAX_BUCKETS_OUT = %dn",
- IOC_AND_NETDEV_NAMES_s_s(dev),
- priv->mpt_rxfidx_tail,
- MPT_LAN_MAX_BUCKETS_OUT);
- panic("Damn it Jim! I'm a doctor, not a programmer! "
- "Oh, wait a sec, I am a programmer. "
- "And, who's Jim?!?!n"
- "Arrgghh! We've done it again!n");
- }
- #if 0
- {
- u32 remaining = le32_to_cpu(pRecvRep->BucketsRemaining);
- if (remaining < priv->bucketthresh)
- mpt_lan_wake_post_buckets_task(dev);
- if (remaining == 0)
- printk (KERN_WARNING MYNAM ": %s/%s: WARNING - IOC out of buckets! "
- "(priv->buckets_out = %d)n",
- IOC_AND_NETDEV_NAMES_s_s(dev),
- atomic_read(&priv->buckets_out));
- else
- printk (KERN_INFO MYNAM ": %s/%s: IOC says %d buckets left. "
- "(priv->buckets_out = %d)n",
- IOC_AND_NETDEV_NAMES_s_s(dev),
- remaining, atomic_read(&priv->buckets_out));
- }
- #endif
- return mpt_lan_receive_skb(dev, skb);
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- /* Simple SGE's only at the moment */
- static void
- mpt_lan_post_receive_buckets(void *dev_id)
- {
- struct net_device *dev = dev_id;
- struct mpt_lan_priv *priv = dev->priv;
- MPT_ADAPTER *mpt_dev = priv->mpt_dev;
- MPT_FRAME_HDR *mf;
- LANReceivePostRequest_t *pRecvReq;
- SGETransaction32_t *pTrans;
- SGESimple64_t *pSimple;
- struct sk_buff *skb;
- dma_addr_t dma;
- u32 curr, buckets, count, max;
- u32 len = (dev->mtu + dev->hard_header_len + 4);
- unsigned long flags;
- int i;
- curr = atomic_read(&priv->buckets_out);
- buckets = (priv->max_buckets_out - curr);
- dioprintk((KERN_INFO MYNAM ": %s/%s: @%s, Start_buckets = %u, buckets_out = %un",
- IOC_AND_NETDEV_NAMES_s_s(dev),
- __FUNCTION__, buckets, curr));
- max = (mpt_dev->req_sz - MPT_LAN_RECEIVE_POST_REQUEST_SIZE) /
- (MPT_LAN_TRANSACTION32_SIZE + sizeof(SGESimple64_t));
- while (buckets) {
- mf = mpt_get_msg_frame(LanCtx, mpt_dev->id);
- if (mf == NULL) {
- printk (KERN_ERR "%s: Unable to alloc request framen",
- __FUNCTION__);
- dioprintk((KERN_ERR "%s: %u buckets remainingn",
- __FUNCTION__, buckets));
- goto out;
- }
- pRecvReq = (LANReceivePostRequest_t *) mf;
- count = buckets;
- if (count > max)
- count = max;
- pRecvReq->Function = MPI_FUNCTION_LAN_RECEIVE;
- pRecvReq->ChainOffset = 0;
- pRecvReq->MsgFlags = 0;
- pRecvReq->PortNumber = priv->pnum;
- pTrans = (SGETransaction32_t *) pRecvReq->SG_List;
- pSimple = NULL;
- for (i = 0; i < count; i++) {
- int ctx;
- spin_lock_irqsave(&priv->rxfidx_lock, flags);
- if (priv->mpt_rxfidx_tail < 0) {
- printk (KERN_ERR "%s: Can't alloc contextn",
- __FUNCTION__);
- spin_unlock_irqrestore(&priv->rxfidx_lock,
- flags);
- break;
- }
- ctx = priv->mpt_rxfidx[priv->mpt_rxfidx_tail--];
- skb = priv->RcvCtl[ctx].skb;
- if (skb && (priv->RcvCtl[ctx].len != len)) {
- pci_unmap_single(mpt_dev->pcidev,
- priv->RcvCtl[ctx].dma,
- priv->RcvCtl[ctx].len,
- PCI_DMA_FROMDEVICE);
- dev_kfree_skb(priv->RcvCtl[ctx].skb);
- skb = priv->RcvCtl[ctx].skb = NULL;
- }
- if (skb == NULL) {
- skb = dev_alloc_skb(len);
- if (skb == NULL) {
- /**/ printk (KERN_WARNING
- /**/ MYNAM "/%s: Can't alloc skbn",
- /**/ __FUNCTION__);
- priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx;
- spin_unlock_irqrestore(&priv->rxfidx_lock, flags);
- break;
- }
- dma = pci_map_single(mpt_dev->pcidev, skb->data,
- len, PCI_DMA_FROMDEVICE);
- priv->RcvCtl[ctx].skb = skb;
- priv->RcvCtl[ctx].dma = dma;
- priv->RcvCtl[ctx].len = len;
- }
- spin_unlock_irqrestore(&priv->rxfidx_lock, flags);
- pTrans->ContextSize = sizeof(u32);
- pTrans->DetailsLength = 0;
- pTrans->Flags = 0;
- pTrans->TransactionContext[0] = cpu_to_le32(ctx);
- pSimple = (SGESimple64_t *) pTrans->TransactionDetails;
- pSimple->FlagsLength = cpu_to_le32(
- ((MPI_SGE_FLAGS_END_OF_BUFFER |
- MPI_SGE_FLAGS_SIMPLE_ELEMENT |
- MPI_SGE_FLAGS_64_BIT_ADDRESSING) << MPI_SGE_FLAGS_SHIFT) | len);
- pSimple->Address.Low = cpu_to_le32((u32) priv->RcvCtl[ctx].dma);
- if (sizeof(dma_addr_t) > sizeof(u32))
- pSimple->Address.High = cpu_to_le32((u32) ((u64) priv->RcvCtl[ctx].dma >> 32));
- else
- pSimple->Address.High = 0;
- pTrans = (SGETransaction32_t *) (pSimple + 1);
- }
- if (pSimple == NULL) {
- /**/ printk (KERN_WARNING MYNAM "/%s: No buckets postedn",
- /**/ __FUNCTION__);
- mpt_free_msg_frame(LanCtx, mpt_dev->id, mf);
- goto out;
- }
- pSimple->FlagsLength |= cpu_to_le32(MPI_SGE_FLAGS_END_OF_LIST << MPI_SGE_FLAGS_SHIFT);
- pRecvReq->BucketCount = cpu_to_le32(i);
- /* printk(KERN_INFO MYNAM ": posting bucketsn ");
- * for (i = 0; i < j + 2; i ++)
- * printk (" %08x", le32_to_cpu(msg[i]));
- * printk ("n");
- */
- mpt_put_msg_frame(LanCtx, mpt_dev->id, mf);
- priv->total_posted += i;
- buckets -= i;
- atomic_add(i, &priv->buckets_out);
- }
- out:
- dioprintk((KERN_INFO MYNAM "/%s: End_buckets = %u, priv->buckets_out = %un",
- __FUNCTION__, buckets, atomic_read(&priv->buckets_out)));
- dioprintk((KERN_INFO MYNAM "/%s: Posted %u buckets and received %u backn",
- __FUNCTION__, priv->total_posted, priv->total_received));
- clear_bit(0, &priv->post_buckets_active);
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- struct net_device *
- mpt_register_lan_device (MPT_ADAPTER *mpt_dev, int pnum)
- {
- struct net_device *dev = NULL;
- struct mpt_lan_priv *priv = NULL;
- u8 HWaddr[FC_ALEN], *a;
- dev = init_fcdev(NULL, sizeof(struct mpt_lan_priv));
- if (!dev)
- return (NULL);
- dev->mtu = MPT_LAN_MTU;
- priv = (struct mpt_lan_priv *) dev->priv;
- priv->mpt_dev = mpt_dev;
- priv->pnum = pnum;
- memset(&priv->post_buckets_task, 0, sizeof(struct tq_struct));
- priv->post_buckets_task.routine = mpt_lan_post_receive_buckets;
- priv->post_buckets_task.data = dev;
- priv->post_buckets_active = 0;
- dprintk((KERN_INFO MYNAM "@%d: bucketlen = %dn",
- __LINE__, dev->mtu + dev->hard_header_len + 4));
- atomic_set(&priv->buckets_out, 0);
- priv->total_posted = 0;
- priv->total_received = 0;
- priv->max_buckets_out = max_buckets_out;
- if (mpt_dev->pfacts[0].MaxLanBuckets < max_buckets_out)
- priv->max_buckets_out = mpt_dev->pfacts[0].MaxLanBuckets;
- dprintk((KERN_INFO MYNAM "@%d: MaxLanBuckets=%d, max_buckets_out/priv=%d/%dn",
- __LINE__,
- mpt_dev->pfacts[0].MaxLanBuckets,
- max_buckets_out,
- priv->max_buckets_out));
- priv->bucketthresh = priv->max_buckets_out * 2 / 3;
- priv->txfidx_lock = SPIN_LOCK_UNLOCKED;
- priv->rxfidx_lock = SPIN_LOCK_UNLOCKED;
- memset(&priv->stats, 0, sizeof(priv->stats));
- /* Grab pre-fetched LANPage1 stuff. :-) */
- a = (u8 *) &mpt_dev->lan_cnfg_page1.HardwareAddressLow;
- HWaddr[0] = a[5];
- HWaddr[1] = a[4];
- HWaddr[2] = a[3];
- HWaddr[3] = a[2];
- HWaddr[4] = a[1];
- HWaddr[5] = a[0];
- dev->addr_len = FC_ALEN;
- memcpy(dev->dev_addr, HWaddr, FC_ALEN);
- memset(dev->broadcast, 0xff, FC_ALEN);
- /* The Tx queue is 127 deep on the 909.
- * Give ourselves some breathing room.
- */
- priv->tx_max_out = (tx_max_out_p <= MPT_TX_MAX_OUT_LIM) ?
- tx_max_out_p : MPT_TX_MAX_OUT_LIM;
- dev->open = mpt_lan_open;
- dev->stop = mpt_lan_close;
- dev->get_stats = mpt_lan_get_stats;
- dev->set_multicast_list = NULL;
- dev->change_mtu = mpt_lan_change_mtu;
- dev->hard_start_xmit = mpt_lan_sdu_send;
- /* Not in 2.3.42. Need 2.3.45+ */
- dev->tx_timeout = mpt_lan_tx_timeout;
- dev->watchdog_timeo = MPT_LAN_TX_TIMEOUT;
- dprintk((KERN_INFO MYNAM ": Finished registering dev "
- "and setting initial valuesn"));
- SET_MODULE_OWNER(dev);
- return dev;
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- int __init
- mpt_lan_init (void)
- {
- struct net_device *dev;
- MPT_ADAPTER *curadapter;
- int i = 0, j;
- show_mptmod_ver(LANAME, LANVER);
- /* Init the global r/w lock for the bad_naa list. We want to do this
- before any boards are initialized and may be used. */
- rwlock_init(&bad_naa_lock);
- if ((LanCtx = mpt_register(lan_reply, MPTLAN_DRIVER)) <= 0) {
- printk (KERN_ERR MYNAM ": Failed to register with MPT base drivern");
- return -EBUSY;
- }
- /* Set the callback index to be used by driver core for turbo replies */
- mpt_lan_index = LanCtx;
- dprintk((KERN_INFO MYNAM ": assigned context of %dn", LanCtx));
- if (mpt_reset_register(LanCtx, mpt_lan_ioc_reset) == 0) {
- dprintk((KERN_INFO MYNAM ": Registered for IOC reset notificationsn"));
- } else {
- printk(KERN_ERR MYNAM ": Eieee! unable to register a reset "
- "handler with mptbase! The world is at an end! "
- "Everything is fading to black! Goodbye.n");
- return -EBUSY;
- }
- for (j = 0; j < MPT_MAX_ADAPTERS; j++) {
- mpt_landev[j] = NULL;
- }
- j = 0;
- curadapter = mpt_adapter_find_first();
- while (curadapter != NULL) {
- for (i = 0; i < curadapter->facts.NumberOfPorts; i++) {
- printk (KERN_INFO MYNAM ": %s: PortNum=%x, ProtocolFlags=%02Xh (%c%c%c%c)n",
- curadapter->name,
- curadapter->pfacts[i].PortNumber,
- curadapter->pfacts[i].ProtocolFlags,
- MPT_PROTOCOL_FLAGS_c_c_c_c(curadapter->pfacts[i].ProtocolFlags));
- if (curadapter->pfacts[i].ProtocolFlags & MPI_PORTFACTS_PROTOCOL_LAN) {
- dev = mpt_register_lan_device (curadapter, i);
- if (dev != NULL) {
- printk (KERN_INFO MYNAM ": %s: Fusion MPT LAN device registered as '%s'n",
- curadapter->name, dev->name);
- printk (KERN_INFO MYNAM ": %s/%s: LanAddr = %02X:%02X:%02X:%02X:%02X:%02Xn",
- IOC_AND_NETDEV_NAMES_s_s(dev),
- dev->dev_addr[0], dev->dev_addr[1],
- dev->dev_addr[2], dev->dev_addr[3],
- dev->dev_addr[4], dev->dev_addr[5]);
- // printk (KERN_INFO MYNAM ": %s/%s: Max_TX_outstanding = %dn",
- // IOC_AND_NETDEV_NAMES_s_s(dev),
- // NETDEV_TO_LANPRIV_PTR(dev)->tx_max_out);
- mpt_landev[j] = dev;
- dprintk((KERN_INFO MYNAM "/init: dev_addr=%p, mpt_landev[%d]=%pn",
- dev, j, mpt_landev[j]));
- j++;
- } else {
- printk (KERN_ERR MYNAM ": %s: Unable to register port%d as a LAN devicen",
- curadapter->name,
- curadapter->pfacts[i].PortNumber);
- }
- } else {
- printk (KERN_INFO MYNAM ": %s: Hmmm... LAN protocol seems to be disabled on this adapter port!n",
- curadapter->name);
- }
- }
- curadapter = mpt_adapter_find_next(curadapter);
- }
- return 0;
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- void __init mpt_lan_exit(void)
- {
- int i;
- mpt_reset_deregister(LanCtx);
- for (i = 0; mpt_landev[i] != NULL; i++) {
- struct net_device *dev = mpt_landev[i];
- printk (KERN_INFO MYNAM ": %s/%s: Fusion MPT LAN device unregisteredn",
- IOC_AND_NETDEV_NAMES_s_s(dev));
- unregister_fcdev(dev);
- mpt_landev[i] = (struct net_device *) 0xdeadbeef; /* Debug */
- }
- if (LanCtx >= 0) {
- mpt_deregister(LanCtx);
- LanCtx = -1;
- mpt_lan_index = 0;
- }
- /* deregister any send/receive handler structs. I2Oism? */
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- MODULE_PARM(tx_max_out_p, "i");
- MODULE_PARM(max_buckets_out, "i"); // Debug stuff. FIXME!
- MODULE_LICENSE("GPL");
- module_init(mpt_lan_init);
- module_exit(mpt_lan_exit);
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
- static unsigned short
- mpt_lan_type_trans(struct sk_buff *skb, struct net_device *dev)
- {
- struct mpt_lan_ohdr *fch = (struct mpt_lan_ohdr *)skb->data;
- struct fcllc *fcllc;
- u16 source_naa = fch->stype, found = 0;
- skb->mac.raw = skb->data;
- skb_pull(skb, sizeof(struct mpt_lan_ohdr));
- if (fch->dtype == htons(0xffff)) {
- u32 *p = (u32 *) fch;
- swab32s(p + 0);
- swab32s(p + 1);
- swab32s(p + 2);
- swab32s(p + 3);
- printk (KERN_WARNING MYNAM ": %s: WARNING - Broadcast swap F/W bug detected!n",
- NETDEV_PTR_TO_IOC_NAME_s(dev));
- printk (KERN_WARNING MYNAM ": Please update sender @ MAC_addr = %02x:%02x:%02x:%02x:%02x:%02xn",
- fch->saddr[0], fch->saddr[1], fch->saddr[2],
- fch->saddr[3], fch->saddr[4], fch->saddr[5]);
- }
- if (*fch->daddr & 1) {
- if (!memcmp(fch->daddr, dev->broadcast, FC_ALEN)) {
- skb->pkt_type = PACKET_BROADCAST;
- } else {
- skb->pkt_type = PACKET_MULTICAST;
- }
- } else {
- if (memcmp(fch->daddr, dev->dev_addr, FC_ALEN)) {
- skb->pkt_type = PACKET_OTHERHOST;
- } else {
- skb->pkt_type = PACKET_HOST;
- }
- }
- fcllc = (struct fcllc *)skb->data;
- /* Workaround for QLogic not following RFC 2625 in regards to the NAA
- value. */
- if ((source_naa & 0xF000) == 0)
- source_naa = swab16(source_naa);
- if (fcllc->ethertype == htons(ETH_P_ARP))
- dprintk ((KERN_INFO "mptlan/type_trans: got arp req/rep w/ naa of "
- "%04x.n", source_naa));
- if ((fcllc->ethertype == htons(ETH_P_ARP)) &&
- ((source_naa >> 12) != MPT_LAN_NAA_RFC2625)){
- struct NAA_Hosed *nh, *prevnh;
- int i;
- dprintk ((KERN_INFO "mptlan/type_trans: ARP Req/Rep from "
- "system with non-RFC 2625 NAA value (%04x).n",
- source_naa));
- write_lock_irq(&bad_naa_lock);
- for (prevnh = nh = mpt_bad_naa; nh != NULL;
- prevnh=nh, nh=nh->next) {
- if ((nh->ieee[0] == fch->saddr[0]) &&
- (nh->ieee[1] == fch->saddr[1]) &&
- (nh->ieee[2] == fch->saddr[2]) &&
- (nh->ieee[3] == fch->saddr[3]) &&
- (nh->ieee[4] == fch->saddr[4]) &&
- (nh->ieee[5] == fch->saddr[5])) {
- found = 1;
- dprintk ((KERN_INFO "mptlan/type_trans: ARP Re"
- "q/Rep w/ bad NAA from system already"
- " in DB.n"));
- break;
- }
- }
-
- if ((!found) && (nh == NULL)) {
- nh = kmalloc(sizeof(struct NAA_Hosed), GFP_KERNEL);
- dprintk ((KERN_INFO "mptlan/type_trans: ARP Req/Rep w/"
- " bad NAA from system not yet in DB.n"));
- if (nh != NULL) {
- nh->next = NULL;
- if (!mpt_bad_naa)
- mpt_bad_naa = nh;
- if (prevnh)
- prevnh->next = nh;
-
- nh->NAA = source_naa; /* Set the S_NAA value. */
- for (i = 0; i < FC_ALEN; i++)
- nh->ieee[i] = fch->saddr[i];
- dprintk ((KERN_INFO "Got ARP from %02x:%02x:%02x:%02x:"
- "%02x:%02x with non-compliant S_NAA value.n",
- fch->saddr[0], fch->saddr[1], fch->saddr[2],
- fch->saddr[3], fch->saddr[4],fch->saddr[5]));
- } else {
- printk (KERN_ERR "mptlan/type_trans: Unable to"
- " kmalloc a NAA_Hosed struct.n");
- }
- } else if (!found) {
- printk (KERN_ERR "mptlan/type_trans: found not"
- " set, but nh isn't null. Evil "
- "funkiness abounds.n");
- }
- write_unlock_irq(&bad_naa_lock);
- }
-
- /* Strip the SNAP header from ARP packets since we don't
- * pass them through to the 802.2/SNAP layers.
- */
- if (fcllc->dsap == EXTENDED_SAP &&
- (fcllc->ethertype == htons(ETH_P_IP) ||
- fcllc->ethertype == htons(ETH_P_ARP))) {
- skb_pull(skb, sizeof(struct fcllc));
- return fcllc->ethertype;
- }
- return htons(ETH_P_802_2);
- }
- /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/