From d9d578bff771229c017582d746259ac282ee01e2 Mon Sep 17 00:00:00 2001 From: Mithlesh Thukral Date: Mon, 19 Jan 2009 20:23:22 +0530 Subject: [PATCH] Staging: sxg: SXG SGL related cleanup in data structures and code * Cleanup in allocation of SXG_SGLs. * Locking issues related to SglQLock. * XmtCmd and XmtZeroLock consistency fixes. Signed-off-by: LinSysSoft Sahara Team Signed-off-by: Christopher Harrer Signed-off-by: Greg Kroah-Hartman --- drivers/staging/sxg/sxg.c | 369 ++++++++++++++++++------------ drivers/staging/sxg/sxg.h | 37 ++- drivers/staging/sxg/sxg_ethtool.c | 2 +- drivers/staging/sxg/sxghif.h | 14 ++ 4 files changed, 262 insertions(+), 160 deletions(-) diff --git a/drivers/staging/sxg/sxg.c b/drivers/staging/sxg/sxg.c index 80e84768da12..b8e0e2b7360a 100644 --- a/drivers/staging/sxg/sxg.c +++ b/drivers/staging/sxg/sxg.c @@ -95,13 +95,13 @@ static int sxg_entry_halt(struct net_device *dev); static int sxg_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); static int sxg_send_packets(struct sk_buff *skb, struct net_device *dev); static int sxg_transmit_packet(struct adapter_t *adapter, struct sk_buff *skb); -static void sxg_dumb_sgl(struct sxg_x64_sgl *pSgl, +static int sxg_dumb_sgl(struct sxg_x64_sgl *pSgl, struct sxg_scatter_gather *SxgSgl); static void sxg_handle_interrupt(struct adapter_t *adapter); static int sxg_process_isr(struct adapter_t *adapter, u32 MessageId); static u32 sxg_process_event_queue(struct adapter_t *adapter, u32 RssId); -static void sxg_complete_slow_send(struct adapter_t *adapter); +static void sxg_complete_slow_send(struct adapter_t *adapter, int irq_context); static struct sk_buff *sxg_slow_receive(struct adapter_t *adapter, struct sxg_event *Event); static void sxg_process_rcv_error(struct adapter_t *adapter, u32 ErrorStatus); @@ -112,8 +112,12 @@ static bool sxg_mac_filter(struct adapter_t *adapter, static struct net_device_stats *sxg_get_stats(struct net_device *dev); #endif -void SxgFreeResources(struct adapter_t *adapter); -void SxgFreeRcvBlocks(struct adapter_t *adapter); +void sxg_free_resources(struct adapter_t *adapter); +void sxg_free_rcvblocks(struct adapter_t *adapter); +void sxg_free_sgl_buffers(struct adapter_t *adapter); +void sxg_unmap_resources(struct adapter_t *adapter); +void sxg_free_mcast_addrs(struct adapter_t *adapter); +void sxg_collect_statistics(struct adapter_t *adapter); #define XXXTODO 0 @@ -505,6 +509,12 @@ static int sxg_allocate_resources(struct adapter_t *adapter) goto per_tcb_allocation_failed; } memset(adapter->RcvRings, 0, sizeof(struct sxg_rcv_ring) * 1); + adapter->ucode_stats = kzalloc(sizeof(struct sxg_ucode_stats), GFP_ATOMIC); + adapter->pucode_stats = pci_map_single(adapter->pcidev, + adapter->ucode_stats, + sizeof(struct sxg_ucode_stats), + PCI_DMA_FROMDEVICE); +// memset(adapter->ucode_stats, 0, sizeof(struct sxg_ucode_stats)); break; per_tcb_allocation_failed: @@ -524,6 +534,13 @@ static int sxg_allocate_resources(struct adapter_t *adapter) adapter->RcvRings = NULL; } /* Loop around and try again.... */ + if (adapter->ucode_stats) { + pci_unmap_single(adapter->pcidev, + sizeof(struct sxg_ucode_stats), + adapter->pucode_stats, PCI_DMA_FROMDEVICE); + adapter->ucode_stats = NULL; + } + } DBG_ERROR("%s Initialize RCV ZERO and XMT ZERO rings\n", __func__); @@ -1213,7 +1230,7 @@ static int sxg_process_isr(struct adapter_t *adapter, u32 MessageId) } /* Slowpath send completions */ if (Isr & SXG_ISR_SPSEND) { - sxg_complete_slow_send(adapter); + sxg_complete_slow_send(adapter, 1); } /* Dump */ if (Isr & SXG_ISR_UPC) { @@ -1400,27 +1417,37 @@ static u32 sxg_process_event_queue(struct adapter_t *adapter, u32 RssId) * * Arguments - * adapter - A pointer to our adapter structure - + * irq_context - An integer to denote if we are in interrupt context * Return * None */ -static void sxg_complete_slow_send(struct adapter_t *adapter) +static void sxg_complete_slow_send(struct adapter_t *adapter, int irq_context) { struct sxg_xmt_ring *XmtRing = &adapter->XmtRings[0]; struct sxg_ring_info *XmtRingInfo = &adapter->XmtRingZeroInfo; u32 *ContextType; struct sxg_cmd *XmtCmd; + unsigned long flags; + unsigned long sgl_flags; + unsigned int processed_count = 0; /* * NOTE - This lock is dropped and regrabbed in this loop. * This means two different processors can both be running/ * through this loop. Be *very* careful. */ - spin_lock(&adapter->XmtZeroLock); + if(irq_context) { + if(!spin_trylock(&adapter->XmtZeroLock)) + goto lock_busy; + } + else + spin_lock_irqsave(&adapter->XmtZeroLock, flags); + SXG_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_NOISY, "CmpSnds", adapter, XmtRingInfo->Head, XmtRingInfo->Tail, 0); - while (XmtRingInfo->Tail != *adapter->XmtRingZeroIndex) { + while ((XmtRingInfo->Tail != *adapter->XmtRingZeroIndex) + && processed_count++ < SXG_COMPLETE_SLOW_SEND_LIMIT) { /* * Locate the current Cmd (ring descriptor entry), and * associated SGL, and advance the tail @@ -1438,10 +1465,14 @@ static void sxg_complete_slow_send(struct adapter_t *adapter) struct sk_buff *skb; struct sxg_scatter_gather *SxgSgl = (struct sxg_scatter_gather *)ContextType; + dma64_addr_t FirstSgeAddress; + u32 FirstSgeLength; /* Dumb-nic send. Command context is the dumb-nic SGL */ skb = (struct sk_buff *)ContextType; skb = SxgSgl->DumbPacket; + FirstSgeAddress = XmtCmd->Buffer.FirstSgeAddress; + FirstSgeLength = XmtCmd->Buffer.FirstSgeLength; /* Complete the send */ SXG_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_IMPORTANT, "DmSndCmp", skb, 0, @@ -1456,17 +1487,36 @@ static void sxg_complete_slow_send(struct adapter_t *adapter) * chimney send, which results in a double trip * in SxgTcpOuput */ - spin_unlock(&adapter->XmtZeroLock); - SXG_COMPLETE_DUMB_SEND(adapter, skb); + if(irq_context) + spin_unlock(&adapter->XmtZeroLock); + else + spin_unlock_irqrestore( + &adapter->XmtZeroLock, flags); + + SxgSgl->DumbPacket = NULL; + SXG_COMPLETE_DUMB_SEND(adapter, skb, + FirstSgeAddress, + FirstSgeLength); + SXG_FREE_SGL_BUFFER(adapter, SxgSgl, NULL, + irq_context); /* and reacquire.. */ - spin_lock(&adapter->XmtZeroLock); + if(irq_context) { + if(!spin_trylock(&adapter->XmtZeroLock)) + goto lock_busy; + } + else + spin_lock_irqsave(&adapter->XmtZeroLock, flags); } break; default: ASSERT(0); } } - spin_unlock(&adapter->XmtZeroLock); + if(irq_context) + spin_unlock(&adapter->XmtZeroLock); + else + spin_unlock_irqrestore(&adapter->XmtZeroLock, flags); +lock_busy: SXG_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_NOISY, "CmpSnd", adapter, XmtRingInfo->Head, XmtRingInfo->Tail, 0); } @@ -1486,8 +1536,14 @@ static struct sk_buff *sxg_slow_receive(struct adapter_t *adapter, u32 BufferSize = adapter->ReceiveBufferSize; struct sxg_rcv_data_buffer_hdr *RcvDataBufferHdr; struct sk_buff *Packet; + static int read_counter = 0; RcvDataBufferHdr = (struct sxg_rcv_data_buffer_hdr *) Event->HostHandle; + if(read_counter++ & 0x100) + { + sxg_collect_statistics(adapter); + read_counter = 0; + } ASSERT(RcvDataBufferHdr); ASSERT(RcvDataBufferHdr->State == SXG_BUFFER_ONCARD); SXG_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_IMPORTANT, "SlowRcv", Event, @@ -1560,12 +1616,13 @@ static struct sk_buff *sxg_slow_receive(struct adapter_t *adapter, RcvDataBufferHdr, Packet, Event->Length, 0); /* Lastly adjust the receive packet length. */ RcvDataBufferHdr->SxgDumbRcvPacket = NULL; + RcvDataBufferHdr->PhysicalAddress = NULL; SXG_ALLOCATE_RCV_PACKET(adapter, RcvDataBufferHdr, BufferSize); if (RcvDataBufferHdr->skb) { spin_lock(&adapter->RcvQLock); SXG_FREE_RCV_DATA_BUFFER(adapter, RcvDataBufferHdr); - adapter->RcvBuffersOnCard ++; + // adapter->RcvBuffersOnCard ++; spin_unlock(&adapter->RcvQLock); } return (Packet); @@ -1911,20 +1968,17 @@ static void __devexit sxg_entry_remove(struct pci_dev *pcidev) u32 mmio_start = 0; unsigned int mmio_len = 0; struct adapter_t *adapter = (struct adapter_t *) netdev_priv(dev); - +/* set_bit(ADAPT_DOWN, &adapter->state); - flush_scheduled_work(); +*/ flush_scheduled_work(); /* Deallocate Resources */ - - SxgFreeResources(adapter); + unregister_netdev(dev); + sxg_free_resources(adapter); ASSERT(adapter); DBG_ERROR("sxg: %s ENTER dev[%p] adapter[%p]\n", __func__, dev, adapter); - sxg_deregister_interrupt(adapter); - sxg_unmap_mmio_space(adapter); - DBG_ERROR("sxg: %s unregister_netdev\n", __func__); mmio_start = pci_resource_start(pcidev, 0); mmio_len = pci_resource_len(pcidev, 0); @@ -1933,11 +1987,6 @@ static void __devexit sxg_entry_remove(struct pci_dev *pcidev) mmio_start, mmio_len); release_mem_region(mmio_start, mmio_len); -/* - DBG_ERROR("sxg: %s iounmap dev->base_addr[%x]\n", __func__, - (unsigned int)dev->base_addr); - iounmap((char *)dev->base_addr); -*/ mmio_start = pci_resource_start(pcidev, 2); mmio_len = pci_resource_len(pcidev, 2); @@ -1945,10 +1994,6 @@ static void __devexit sxg_entry_remove(struct pci_dev *pcidev) mmio_start, mmio_len); release_mem_region(mmio_start, mmio_len); - iounmap((char *)dev->base_addr); - unregister_netdev(dev); - //pci_release_regions(pcidev); - //free_netdev(dev); pci_disable_device(pcidev); DBG_ERROR("sxg: %s deallocate device\n", __func__); @@ -1978,6 +2023,7 @@ static int sxg_entry_halt(struct net_device *dev) spin_unlock_irqrestore(&sxg_global.driver_lock, sxg_global.flags); + sxg_deregister_interrupt(adapter); return (STATUS_SUCCESS); } @@ -2076,13 +2122,14 @@ static int sxg_send_packets(struct sk_buff *skb, struct net_device *dev) #else SXG_DROP_DUMB_SEND(adapter, skb); adapter->stats.tx_dropped++; + return NETDEV_TX_BUSY; #endif } DBG_ERROR("sxg: %s EXIT sxg_send_packets status[%x]\n", __func__, status); xmit_done: - return 0; + return NETDEV_TX_OK; } /* @@ -2100,6 +2147,7 @@ static int sxg_transmit_packet(struct adapter_t *adapter, struct sk_buff *skb) { struct sxg_x64_sgl *pSgl; struct sxg_scatter_gather *SxgSgl; + unsigned long sgl_flags; /* void *SglBuffer; */ /* u32 SglBufferLength; */ @@ -2111,7 +2159,7 @@ static int sxg_transmit_packet(struct adapter_t *adapter, struct sk_buff *skb) adapter, skb, 0, 0); /* Allocate a SGL buffer */ - SXG_GET_SGL_BUFFER(adapter, SxgSgl); + SXG_GET_SGL_BUFFER(adapter, SxgSgl, 0); if (!SxgSgl) { adapter->Stats.NoSglBuf++; adapter->Stats.XmtErrors++; @@ -2129,9 +2177,7 @@ static int sxg_transmit_packet(struct adapter_t *adapter, struct sk_buff *skb) pSgl = NULL; /* Call the common sxg_dumb_sgl routine to complete the send. */ - sxg_dumb_sgl(pSgl, SxgSgl); - /* Return success sxg_dumb_sgl (or something later) will complete it.*/ - return (STATUS_SUCCESS); + return (sxg_dumb_sgl(pSgl, SxgSgl)); } /* @@ -2142,9 +2188,9 @@ static int sxg_transmit_packet(struct adapter_t *adapter, struct sk_buff *skb) * SxgSgl - struct sxg_scatter_gather * * Return Value: - * None. + * Status of send operation. */ -static void sxg_dumb_sgl(struct sxg_x64_sgl *pSgl, +static int sxg_dumb_sgl(struct sxg_x64_sgl *pSgl, struct sxg_scatter_gather *SxgSgl) { struct adapter_t *adapter = SxgSgl->adapter; @@ -2158,6 +2204,7 @@ static void sxg_dumb_sgl(struct sxg_x64_sgl *pSgl, /* unsigned int BufLen; */ /* u32 SglOffset; */ u64 phys_addr; + unsigned long flags; SXG_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_NOISY, "DumbSgl", pSgl, SxgSgl, 0, 0); @@ -2179,16 +2226,17 @@ static void sxg_dumb_sgl(struct sxg_x64_sgl *pSgl, SxgSgl->Sgl.NumberOfElements = 1; /* Grab the spinlock and acquire a command */ - spin_lock(&adapter->XmtZeroLock); + spin_lock_irqsave(&adapter->XmtZeroLock, flags); SXG_GET_CMD(XmtRing, XmtRingInfo, XmtCmd, SxgSgl); if (XmtCmd == NULL) { /* * Call sxg_complete_slow_send to see if we can * free up any XmtRingZero entries and then try again */ - spin_unlock(&adapter->XmtZeroLock); - sxg_complete_slow_send(adapter); - spin_lock(&adapter->XmtZeroLock); + + spin_unlock_irqrestore(&adapter->XmtZeroLock, flags); + sxg_complete_slow_send(adapter, 0); + spin_lock_irqsave(&adapter->XmtZeroLock, flags); SXG_GET_CMD(XmtRing, XmtRingInfo, XmtCmd, SxgSgl); if (XmtCmd == NULL) { adapter->Stats.XmtZeroFull++; @@ -2235,10 +2283,10 @@ static void sxg_dumb_sgl(struct sxg_x64_sgl *pSgl, */ WRITE_REG(adapter->UcodeRegs[0].XmtCmd, 1, TRUE); adapter->Stats.XmtQLen++; /* Stats within lock */ - spin_unlock(&adapter->XmtZeroLock); + spin_unlock_irqrestore(&adapter->XmtZeroLock, flags); SXG_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_NOISY, "XDumSgl2", XmtCmd, pSgl, SxgSgl, 0); - return; + return STATUS_SUCCESS; abortcmd: /* @@ -2249,7 +2297,8 @@ static void sxg_dumb_sgl(struct sxg_x64_sgl *pSgl, if (XmtCmd) { SXG_ABORT_CMD(XmtRingInfo); } - spin_unlock(&adapter->XmtZeroLock); + spin_unlock_irqrestore(&adapter->XmtZeroLock, flags); + return STATUS_FAILURE; /* * failsgl: @@ -2260,7 +2309,7 @@ static void sxg_dumb_sgl(struct sxg_x64_sgl *pSgl, SXG_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_IMPORTANT, "DumSGFal", pSgl, SxgSgl, XmtRingInfo->Head, XmtRingInfo->Tail); /* SxgSgl->DumbPacket is the skb */ - SXG_COMPLETE_DUMB_SEND(adapter, SxgSgl->DumbPacket); + // SXG_COMPLETE_DUMB_SEND(adapter, SxgSgl->DumbPacket); } /* @@ -3065,58 +3114,85 @@ static void sxg_unmap_mmio_space(struct adapter_t *adapter) */ #endif } -/* -void SxgFreeRcvBlocks(struct adapter_t *adapter) + +void sxg_free_sgl_buffers(struct adapter_t *adapter) { - u32 i; struct list_entry *ple; - struct sxg_rcv_block_hdr *Hdr; - struct sxg_rcv_data_buffer_hdr *RcvDataBufferHdr; - u32 FreeBuffers = 0, FreeBlocks = 0; + struct sxg_scatter_gather *Sgl; - SXG_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_NOISY, "FrRcvBlk", - adapter, 0, 0, 0); - - ASSERT((adapter->State == SXG_STATE_INITIALIZING) || - (pAdapt->State == SXG_STATE_HALTING)); - - for(i = 0; i < SXG_MAX_CPU; i++) { - FreeBuffers += pAdapt->PerCpuResources[i].FreeReceiveBuffers.Count; - FreeBlocks += pAdapt->PerCpuResources[i].FreeReceiveBlocks.Count; - pAdapt->PerCpuResources[i].FreeReceiveBuffers.Count = 0; - pAdapt->PerCpuResources[i].FreeReceiveBuffers.FreeList = NULL; - pAdapt->PerCpuResources[i].FreeReceiveBlocks.Count = 0; - pAdapt->PerCpuResources[i].FreeReceiveBlocks.FreeList = NULL; + while(!(IsListEmpty(&adapter->AllSglBuffers))) { + ple = RemoveHeadList(&adapter->AllSglBuffers); + Sgl = container_of(ple, struct sxg_scatter_gather, AllList); + kfree(Sgl); + adapter->AllSglBufferCount--; } - FreeBuffers += pAdapt->GlobalResources.FreeReceiveBuffers.Count; - FreeBlocks += pAdapt->GlobalResources.FreeReceiveBlocks.Count; - pAdapt->GlobalResources.FreeReceiveBuffers.Count = 0; - pAdapt->GlobalResources.FreeReceiveBuffers.FreeList = NULL; - pAdapt->GlobalResources.FreeReceiveBlocks.Count = 0; - pAdapt->GlobalResources.FreeReceiveBlocks.FreeList = NULL; - ASSERT(FreeBlocks == pAdapt->AllRcvBlockCount); // See SXG_RCV_BLOCK - ASSERT(FreeBuffers == - (pAdapt->AllRcvBlockCount * SXG_RCV_DESCRIPTORS_PER_BLOCK)); // See SXG_RCV_BLOCK - - while(!(IsListEmpty(&pAdapt->AllRcvBlocks))) { - ple = RemoveHeadList(&pAdapt->AllRcvBlocks); - Hdr = CONTAINING_RECORD(ple, SXG_RCV_BLOCK_HDR, AllList); - NdisMFreeSharedMemory(pAdapt->MiniportHandle, - SXG_RCV_BLOCK_SIZE(pAdapt->ReceiveBufferSize), - TRUE, - Hdr->VirtualAddress, - Hdr->PhysicalAddress); - pAdapt->AllRcvBlockCount--; - } - ASSERT(pAdapt->AllRcvBlockCount == 0); - SLIC_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_NOISY, "XFrRBlk", - pAdapt, 0, 0, 0); } -*/ -//#if XXXTODO + +void sxg_free_rcvblocks(struct adapter_t *adapter) +{ + u32 i; + void *temp_RcvBlock; + struct list_entry *ple; + struct sxg_rcv_block_hdr *RcvBlockHdr; + struct sxg_rcv_data_buffer_hdr *RcvDataBufferHdr; + ASSERT((adapter->state == SXG_STATE_INITIALIZING) || + (adapter->state == SXG_STATE_HALTING)); + while(!(IsListEmpty(&adapter->AllRcvBlocks))) { + + ple = RemoveHeadList(&adapter->AllRcvBlocks); + RcvBlockHdr = container_of(ple, struct sxg_rcv_block_hdr, AllList); + + if(RcvBlockHdr->VirtualAddress) { + temp_RcvBlock = RcvBlockHdr->VirtualAddress; + + for(i=0; i< SXG_RCV_DESCRIPTORS_PER_BLOCK; + i++, temp_RcvBlock += SXG_RCV_DATA_HDR_SIZE) { + RcvDataBufferHdr = + (struct sxg_rcv_data_buffer_hdr *)temp_RcvBlock; + SXG_FREE_RCV_PACKET(RcvDataBufferHdr); + } + } + + pci_free_consistent(adapter->pcidev, + SXG_RCV_BLOCK_SIZE(SXG_RCV_DATA_HDR_SIZE), + RcvBlockHdr->VirtualAddress, + RcvBlockHdr->PhysicalAddress); + adapter->AllRcvBlockCount--; + } + ASSERT(adapter->AllRcvBlockCount == 0); + SXG_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_NOISY, "XFrRBlk", + adapter, 0, 0, 0); +} +void sxg_free_mcast_addrs(struct adapter_t *adapter) +{ + struct sxg_multicast_address *address; + while(adapter->MulticastAddrs) { + address = adapter->MulticastAddrs; + adapter->MulticastAddrs = address->Next; + kfree(address); + } + + adapter->MulticastMask= 0; +} + +void sxg_unmap_resources(struct adapter_t *adapter) +{ + if(adapter->HwRegs) { + iounmap((void *)adapter->HwRegs); + } + if(adapter->UcodeRegs) { + iounmap((void *)adapter->UcodeRegs); + } + + ASSERT(adapter->AllRcvBlockCount == 0); + SXG_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_NOISY, "XFrRBlk", + adapter, 0, 0, 0); +} + + /* - * SxgFreeResources - Free everything allocated in SxgAllocateResources + * sxg_free_resources - Free everything allocated in SxgAllocateResources * * Arguments - * adapter - A pointer to our adapter structure @@ -3124,14 +3200,10 @@ void SxgFreeRcvBlocks(struct adapter_t *adapter) * Return * none */ -void SxgFreeResources(struct adapter_t *adapter) +void sxg_free_resources(struct adapter_t *adapter) { u32 RssIds, IsrCount; u32 i; -/* - SXG_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_NOISY, "FreeRes", - adapter, adapter->MaxTcbs, 0, 0); -*/ RssIds = SXG_RSS_CPU_COUNT(adapter); IsrCount = adapter->MsiEnabled ? RssIds : 1; @@ -3142,14 +3214,13 @@ void SxgFreeResources(struct adapter_t *adapter) */ return; } -/* + if (!(IsListEmpty(&adapter->AllRcvBlocks))) { - SxgFreeRcvBlocks(adapter); + sxg_free_rcvblocks(adapter); } if (!(IsListEmpty(&adapter->AllSglBuffers))) { - SxgFreeSglBuffers(adapter); + sxg_free_sgl_buffers(adapter); } -*/ if (adapter->XmtRingZeroIndex) { pci_free_consistent(adapter->pcidev, @@ -3157,82 +3228,49 @@ void SxgFreeResources(struct adapter_t *adapter) adapter->XmtRingZeroIndex, adapter->PXmtRingZeroIndex); } - printk("VSS Free Isr\n"); if (adapter->Isr) { pci_free_consistent(adapter->pcidev, sizeof(u32) * IsrCount, adapter->Isr, adapter->PIsr); } - printk("VSS Free EventRings\n"); if (adapter->EventRings) { pci_free_consistent(adapter->pcidev, sizeof(struct sxg_event_ring) * RssIds, adapter->EventRings, adapter->PEventRings); } -/* - printk("VSS Free RcvRings\n"); if (adapter->RcvRings) { pci_free_consistent(adapter->pcidev, - sizeof(struct sxg_rcv_ring) * 4096, + sizeof(struct sxg_rcv_ring) * 1, adapter->RcvRings, adapter->PRcvRings); adapter->RcvRings = NULL; } - printk("VSS Free XmtRings\n"); if(adapter->XmtRings) { pci_free_consistent(adapter->pcidev, - sizeof(struct sxg_xmt_ring) * 4096, + sizeof(struct sxg_xmt_ring) * 1, adapter->XmtRings, adapter->PXmtRings); adapter->XmtRings = NULL; } -*/ + if (adapter->ucode_stats) { + pci_unmap_single(adapter->pcidev, + sizeof(struct sxg_ucode_stats), + adapter->pucode_stats, PCI_DMA_FROMDEVICE); + adapter->ucode_stats = NULL; + } -/* - SXG_FREE_PACKET_POOL(adapter->PacketPoolHandle); - SXG_FREE_BUFFER_POOL(adapter->BufferPoolHandle); -*/ /* Unmap register spaces */ - // SxgUnmapResources(adapter); + sxg_unmap_resources(adapter); - /* Deregister DMA */ -/* if (adapter->DmaHandle) { - SXG_DEREGISTER_DMA(adapter->DmaHandle); - } -*/ /* Deregister interrupt */ - // SxgDeregisterInterrupt(adapter); + sxg_free_mcast_addrs(adapter); - /* Possibly free system info (5.2 only) */ - // SXG_RELEASE_SYSTEM_INFO(adapter); - - //SxgDiagFreeResources(adapter); - - // SxgFreeMCastAddrs(adapter); -/* - if (SXG_TIMER_ALLOCATED(adapter->ResetTimer)) { - SXG_CANCEL_TIMER(adapter->ResetTimer, TimerCancelled); - SXG_FREE_TIMER(adapter->ResetTimer); - } - if (SXG_TIMER_ALLOCATED(adapter->RssTimer)) { - SXG_CANCEL_TIMER(adapter->RssTimer, TimerCancelled); - SXG_FREE_TIMER(adapter->RssTimer); - } - if (SXG_TIMER_ALLOCATED(adapter->OffloadTimer)) { - SXG_CANCEL_TIMER(adapter->OffloadTimer, TimerCancelled); - SXG_FREE_TIMER(adapter->OffloadTimer); - } -*/ adapter->BasicAllocations = FALSE; -/* SXG_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_NOISY, "XFreeRes", - adapter, adapter->MaxTcbs, 0, 0); -*/ } -// #endif /* * sxg_allocate_complete - @@ -3311,8 +3349,12 @@ static int sxg_allocate_buffer_memory(struct adapter_t *adapter, ++adapter->AllocationsPending; spin_unlock(&adapter->AdapterLock); - /* At initialization time allocate resources synchronously. */ - Buffer = pci_alloc_consistent(adapter->pcidev, Size, &pBuffer); + if(BufferType != SXG_BUFFER_TYPE_SGL) + Buffer = pci_alloc_consistent(adapter->pcidev, Size, &pBuffer); + else { + Buffer = kzalloc(Size, GFP_ATOMIC); + pBuffer = NULL; + } if (Buffer == NULL) { spin_lock(&adapter->AdapterLock); /* @@ -3468,19 +3510,25 @@ static void sxg_allocate_sgl_buffer_complete(struct adapter_t *adapter, dma_addr_t PhysicalAddress, u32 Length) { + unsigned long sgl_flags; SXG_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_NOISY, "AlSglCmp", adapter, SxgSgl, Length, 0); - spin_lock(&adapter->SglQLock); + if(!in_irq()) + spin_unlock_irqrestore(&adapter->SglQLock, sgl_flags); + else + spin_unlock(&adapter->SglQLock); adapter->AllSglBufferCount++; - memset(SxgSgl, 0, sizeof(struct sxg_scatter_gather)); - /* *PhysicalAddress; */ + /* PhysicalAddress; */ SxgSgl->PhysicalAddress = PhysicalAddress; /* Initialize backpointer once */ SxgSgl->adapter = adapter; InsertTailList(&adapter->AllSglBuffers, &SxgSgl->AllList); - spin_unlock(&adapter->SglQLock); + if(!in_irq()) + spin_unlock_irqrestore(&adapter->SglQLock, sgl_flags); + else + spin_unlock(&adapter->SglQLock); SxgSgl->State = SXG_BUFFER_BUSY; - SXG_FREE_SGL_BUFFER(adapter, SxgSgl, NULL); + SXG_FREE_SGL_BUFFER(adapter, SxgSgl, NULL, in_irq()); SXG_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_NOISY, "XAlSgl", adapter, SxgSgl, Length, 0); } @@ -3702,6 +3750,15 @@ static int sxg_fill_descriptor_block(struct adapter_t *adapter, SXG_GET_RCV_DATA_BUFFER(adapter, RcvDataBufferHdr); ASSERT(RcvDataBufferHdr); ASSERT(RcvDataBufferHdr->SxgDumbRcvPacket); + if (!RcvDataBufferHdr->SxgDumbRcvPacket) { + SXG_ALLOCATE_RCV_PACKET(adapter, RcvDataBufferHdr, + adapter->ReceiveBufferSize); + if(RcvDataBufferHdr->skb) + RcvDataBufferHdr->SxgDumbRcvPacket = + RcvDataBufferHdr->skb; + else + goto no_memory; + } SXG_REINIATIALIZE_PACKET(RcvDataBufferHdr->SxgDumbRcvPacket); RcvDataBufferHdr->State = SXG_BUFFER_ONCARD; RcvDescriptorBlock->Descriptors[i].VirtualAddress = @@ -3730,6 +3787,8 @@ static int sxg_fill_descriptor_block(struct adapter_t *adapter, adapter, adapter->RcvBuffersOnCard, adapter->FreeRcvBufferCount, adapter->AllRcvBlockCount); return (STATUS_SUCCESS); +no_memory: + return (-ENOMEM); } /* @@ -3823,7 +3882,8 @@ static void sxg_complete_descriptor_blocks(struct adapter_t *adapter, /* Now grab the RcvQLock lock and proceed */ spin_lock(&adapter->RcvQLock); ASSERT(Index != RcvRingInfo->Tail); - while (RcvRingInfo->Tail != Index) { + while (sxg_ring_get_forward_diff(RcvRingInfo, Index, + RcvRingInfo->Tail) > 3) { /* * Locate the current Cmd (ring descriptor entry), and * associated receive descriptor block, and advance @@ -3854,6 +3914,15 @@ static void sxg_complete_descriptor_blocks(struct adapter_t *adapter, adapter, Index, RcvRingInfo->Head, RcvRingInfo->Tail); } +/* + * Read the statistics which the card has been maintaining. + */ +void sxg_collect_statistics(struct adapter_t *adapter) +{ + if(adapter->ucode_stats) + WRITE_REG64(adapter, adapter->UcodeRegs[0].GetUcodeStats, adapter->pucode_stats, 0); +} + static struct pci_driver sxg_driver = { .name = sxg_driver_name, .id_table = sxg_pci_tbl, diff --git a/drivers/staging/sxg/sxg.h b/drivers/staging/sxg/sxg.h index a00c2dc97a1e..2d0ad1977ccc 100644 --- a/drivers/staging/sxg/sxg.h +++ b/drivers/staging/sxg/sxg.h @@ -121,9 +121,10 @@ struct sxg_stats { /* DUMB-NIC Send path definitions */ -#define SXG_COMPLETE_DUMB_SEND(_pAdapt, _skb) { \ - ASSERT(_skb); \ - dev_kfree_skb_irq(_skb); \ +#define SXG_COMPLETE_DUMB_SEND(_pAdapt, _skb, _phys_addr, _size) { \ + ASSERT(_skb); \ + pci_unmap_single(_pAdapt->pcidev, _size, _phys_addr, PCI_DMA_TODEVICE); \ + dev_kfree_skb_irq(_skb); \ } #define SXG_DROP_DUMB_SEND(_pAdapt, _skb) { \ @@ -262,14 +263,20 @@ struct sxg_stats { } /* SGL macros */ -#define SXG_FREE_SGL_BUFFER(_pAdapt, _Sgl, _NB) { \ - spin_lock(&(_pAdapt)->SglQLock); \ +#define SXG_FREE_SGL_BUFFER(_pAdapt, _Sgl, _NB, _irq) { \ + if(!_irq) \ + spin_lock_irqsave(&(_pAdapt)->SglQLock, sgl_flags); \ + else \ + spin_lock(&(_pAdapt)->SglQLock); \ (_pAdapt)->FreeSglBufferCount++; \ ASSERT((_pAdapt)->AllSglBufferCount >= (_pAdapt)->FreeSglBufferCount); \ ASSERT(!((_Sgl)->State & SXG_BUFFER_FREE)); \ (_Sgl)->State = SXG_BUFFER_FREE; \ InsertTailList(&(_pAdapt)->FreeSglBuffers, &(_Sgl)->FreeList); \ - spin_unlock(&(_pAdapt)->SglQLock); \ + if(!_irq) \ + spin_unlock_irqrestore(&(_pAdapt)->SglQLock, sgl_flags); \ + else \ + spin_unlock(&(_pAdapt)->SglQLock); \ } /* @@ -279,7 +286,7 @@ struct sxg_stats { * until after that. We're dealing with round numbers here, so we don't need to, * and not grabbing it avoids a possible double-trip. */ -#define SXG_GET_SGL_BUFFER(_pAdapt, _Sgl) { \ +#define SXG_GET_SGL_BUFFER(_pAdapt, _Sgl, _irq) { \ struct list_entry *_ple; \ if ((_pAdapt->FreeSglBufferCount < SXG_MIN_SGL_BUFFERS) && \ (_pAdapt->AllSglBufferCount < SXG_MAX_SGL_BUFFERS) && \ @@ -289,7 +296,10 @@ struct sxg_stats { SXG_BUFFER_TYPE_SGL); \ } \ _Sgl = NULL; \ - spin_lock(&(_pAdapt)->SglQLock); \ + if(!_irq) \ + spin_lock_irqsave(&(_pAdapt)->SglQLock, sgl_flags); \ + else \ + spin_lock(&(_pAdapt)->SglQLock); \ if((_pAdapt)->FreeSglBufferCount) { \ ASSERT(!(IsListEmpty(&(_pAdapt)->FreeSglBuffers))); \ _ple = RemoveHeadList(&(_pAdapt)->FreeSglBuffers); \ @@ -300,7 +310,10 @@ struct sxg_stats { (_Sgl)->State = SXG_BUFFER_BUSY; \ (_Sgl)->pSgl = NULL; \ } \ - spin_unlock(&(_pAdapt)->SglQLock); \ + if(!_irq) \ + spin_unlock_irqrestore(&(_pAdapt)->SglQLock, sgl_flags);\ + else \ + spin_unlock(&(_pAdapt)->SglQLock); \ } /* @@ -416,6 +429,7 @@ struct sxg_driver { #undef STATUS_SUCCESS #endif +/* TODO: We need to try and use NETDEV_TX_* before posting this out */ #define STATUS_SUCCESS 0 #define STATUS_PENDING 0 #define STATUS_FAILURE -1 @@ -631,6 +645,10 @@ struct adapter_t { struct sxg_rcv_ring *RcvRings; /* Receive rings */ dma_addr_t PRcvRings; /* Receive rings - physical address */ + struct sxg_ucode_stats *ucode_stats; /* Ucode Stats */ + /* Ucode Stats - physical address */ + dma_addr_t pucode_stats; + struct sxg_ring_info RcvRingZeroInfo; /* Receive ring 0 info */ u32 * Isr; /* Interrupt status register */ @@ -765,4 +783,5 @@ struct slic_crash_info { #define SIOCSLICTRACEDUMP (SIOCDEVPRIVATE+11) extern struct ethtool_ops sxg_nic_ethtool_ops; +#define SXG_COMPLETE_SLOW_SEND_LIMIT 128 #endif /* __SXG_DRIVER_H__ */ diff --git a/drivers/staging/sxg/sxg_ethtool.c b/drivers/staging/sxg/sxg_ethtool.c index c15c250e9ec5..151f7f075b52 100644 --- a/drivers/staging/sxg/sxg_ethtool.c +++ b/drivers/staging/sxg/sxg_ethtool.c @@ -137,7 +137,7 @@ sxg_nic_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo) struct adapter_t *adapter = netdev_priv(dev); strncpy(drvinfo->driver, sxg_driver_name, 32); strncpy(drvinfo->version, SXG_DRV_VERSION, 32); - strncpy(drvinfo->fw_version, SAHARA_UCODE_VERS_STRING, 32); +// strncpy(drvinfo->fw_version, SAHARA_UCODE_VERS_STRING, 32); strncpy(drvinfo->bus_info, pci_name(adapter->pcidev), 32); /* TODO : Read the major and minor number of firmware. Is this * from the FLASH/EEPROM or download file ? diff --git a/drivers/staging/sxg/sxghif.h b/drivers/staging/sxg/sxghif.h index 5a9e2712c89a..faba61529dd3 100644 --- a/drivers/staging/sxg/sxghif.h +++ b/drivers/staging/sxg/sxghif.h @@ -486,6 +486,20 @@ struct sxg_ring_info { SXG_RING_ADVANCE_TAIL(_ringinfo); \ } +/* + * For a given ring find out how much the first pointer is ahead of + * the second pointer. "ahead" recognises the fact that the ring can wrap + */ +static inline int sxg_ring_get_forward_diff (struct sxg_ring_info *ringinfo, + int a, int b) { + if ((a < 0 || a > ringinfo->Size ) || (b < 0 || b > ringinfo->Size)) + return -1; + if (a > b) /* _a is lagging _b and _b has not wrapped around */ + return (a - b); + else + return ((ringinfo->Size - (b - a))); +} + /*************************************************************** * Host Command Buffer - commands to INIC via the Cmd Rings *