From patchwork Thu Mar 26 14:41:25 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mahesh Rajashekhara X-Patchwork-Id: 6099721 Return-Path: X-Original-To: patchwork-linux-scsi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 60FF59F2A9 for ; Thu, 26 Mar 2015 14:47:45 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3D39520411 for ; Thu, 26 Mar 2015 14:47:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D02F5203E5 for ; Thu, 26 Mar 2015 14:47:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752857AbbCZOrg (ORCPT ); Thu, 26 Mar 2015 10:47:36 -0400 Received: from bby1mta02.pmc-sierra.com ([216.241.235.117]:50252 "EHLO bby1mta02.pmc-sierra.bc.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752674AbbCZOre (ORCPT ); Thu, 26 Mar 2015 10:47:34 -0400 Received: from bby1mta02.pmc-sierra.bc.ca (localhost.pmc-sierra.bc.ca [127.0.0.1]) by localhost (Postfix) with SMTP id 7FADF8E057A; Thu, 26 Mar 2015 07:47:33 -0700 (PDT) Received: from smtp.pmcs.com (bby1cas03.pmc-sierra.internal [216.241.227.144]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by bby1mta02.pmc-sierra.bc.ca (Postfix) with ESMTP id 66EFF8E0577; Thu, 26 Mar 2015 07:47:33 -0700 (PDT) Received: from localhost (216.241.227.4) by bby1cas03.pmc-sierra.internal (216.241.227.144) with Microsoft SMTP Server (TLS) id 14.3.123.3; Thu, 26 Mar 2015 07:47:32 -0700 From: Mahesh Rajashekhara To: , , CC: , Subject: [V2 PATCH 04/11] aacraid: MSI-x support Date: Thu, 26 Mar 2015 10:41:25 -0400 Message-ID: <1427380892-1978-5-git-send-email-Mahesh.Rajashekhara@pmcs.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1427380892-1978-1-git-send-email-Mahesh.Rajashekhara@pmcs.com> References: <1427380892-1978-1-git-send-email-Mahesh.Rajashekhara@pmcs.com> MIME-Version: 1.0 X-Originating-IP: [216.241.227.4] Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add MSI-x interrupt mode support. Signed-off-by: Mahesh Rajashekhara Reviewed-by: Hannes Reinecke Reviewed-by: Murthy Bhat Reviewed-by: Hannes Reinecke --- drivers/scsi/aacraid/aacraid.h | 80 ++++++++- drivers/scsi/aacraid/comminit.c | 95 +++++++++- drivers/scsi/aacraid/commsup.c | 20 ++- drivers/scsi/aacraid/dpcsup.c | 9 +- drivers/scsi/aacraid/linit.c | 20 ++- drivers/scsi/aacraid/src.c | 388 ++++++++++++++++++++++++++++++--------- 6 files changed, 505 insertions(+), 107 deletions(-) diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h index 9e38b20..015c341 100644 --- a/drivers/scsi/aacraid/aacraid.h +++ b/drivers/scsi/aacraid/aacraid.h @@ -6,11 +6,61 @@ #define nblank(x) _nblank(x)[0] #include +#include /*------------------------------------------------------------------------------ * D E F I N E S *----------------------------------------------------------------------------*/ +#define AAC_MAX_MSIX 32 /* vectors */ +#define AAC_PCI_MSI_ENABLE 0x8000 + +enum { + AAC_ENABLE_INTERRUPT = 0x0, + AAC_DISABLE_INTERRUPT, + AAC_ENABLE_MSIX, + AAC_DISABLE_MSIX, + AAC_CLEAR_AIF_BIT, + AAC_CLEAR_SYNC_BIT, + AAC_ENABLE_INTX +}; + +#define AAC_INT_MODE_INTX (1<<0) +#define AAC_INT_MODE_MSI (1<<1) +#define AAC_INT_MODE_AIF (1<<2) +#define AAC_INT_MODE_SYNC (1<<3) + +#define AAC_INT_ENABLE_TYPE1_INTX 0xfffffffb +#define AAC_INT_ENABLE_TYPE1_MSIX 0xfffffffa +#define AAC_INT_DISABLE_ALL 0xffffffff + +/* Bit definitions in IOA->Host Interrupt Register */ +#define PMC_TRANSITION_TO_OPERATIONAL (1<<31) +#define PMC_IOARCB_TRANSFER_FAILED (1<<28) +#define PMC_IOA_UNIT_CHECK (1<<27) +#define PMC_NO_HOST_RRQ_FOR_CMD_RESPONSE (1<<26) +#define PMC_CRITICAL_IOA_OP_IN_PROGRESS (1<<25) +#define PMC_IOARRIN_LOST (1<<4) +#define PMC_SYSTEM_BUS_MMIO_ERROR (1<<3) +#define PMC_IOA_PROCESSOR_IN_ERROR_STATE (1<<2) +#define PMC_HOST_RRQ_VALID (1<<1) +#define PMC_OPERATIONAL_STATUS (1<<31) +#define PMC_ALLOW_MSIX_VECTOR0 (1<<0) + +#define PMC_IOA_ERROR_INTERRUPTS (PMC_IOARCB_TRANSFER_FAILED | \ + PMC_IOA_UNIT_CHECK | \ + PMC_NO_HOST_RRQ_FOR_CMD_RESPONSE | \ + PMC_IOARRIN_LOST | \ + PMC_SYSTEM_BUS_MMIO_ERROR | \ + PMC_IOA_PROCESSOR_IN_ERROR_STATE) + +#define PMC_ALL_INTERRUPT_BITS (PMC_IOA_ERROR_INTERRUPTS | \ + PMC_HOST_RRQ_VALID | \ + PMC_TRANSITION_TO_OPERATIONAL | \ + PMC_ALLOW_MSIX_VECTOR0) +#define PMC_GLOBAL_INT_BIT2 0x00000004 +#define PMC_GLOBAL_INT_BIT0 0x00000001 + #ifndef AAC_DRIVER_BUILD # define AAC_DRIVER_BUILD 30300 # define AAC_DRIVER_BRANCH "-ms" @@ -36,6 +86,7 @@ #define CONTAINER_TO_ID(cont) (cont) #define CONTAINER_TO_LUN(cont) (0) +#define PMC_DEVICE_S6 0x28b #define PMC_DEVICE_S7 0x28c #define PMC_DEVICE_S8 0x28d #define PMC_DEVICE_S9 0x28f @@ -434,7 +485,7 @@ enum fib_xfer_state { struct aac_init { __le32 InitStructRevision; - __le32 MiniPortRevision; + __le32 Sa_MSIXVectors; __le32 fsrev; __le32 CommHeaderAddress; __le32 FastIoCommAreaAddress; @@ -755,7 +806,8 @@ struct rkt_registers { struct src_mu_registers { /* PCI*| Name */ - __le32 reserved0[8]; /* 00h | Reserved */ + __le32 reserved0[6]; /* 00h | Reserved */ + __le32 IOAR[2]; /* 18h | IOA->host interrupt register */ __le32 IDR; /* 20h | Inbound Doorbell Register */ __le32 IISR; /* 24h | Inbound Int. Status Register */ __le32 reserved1[3]; /* 28h | Reserved */ @@ -767,17 +819,18 @@ struct src_mu_registers { __le32 OMR; /* bch | Outbound Message Register */ __le32 IQ_L; /* c0h | Inbound Queue (Low address) */ __le32 IQ_H; /* c4h | Inbound Queue (High address) */ + __le32 ODR_MSI; /* c8h | MSI register for sync./AIF */ }; struct src_registers { - struct src_mu_registers MUnit; /* 00h - c7h */ + struct src_mu_registers MUnit; /* 00h - cbh */ union { struct { - __le32 reserved1[130790]; /* c8h - 7fc5fh */ + __le32 reserved1[130789]; /* cch - 7fc5fh */ struct src_inbound IndexRegs; /* 7fc60h */ } tupelo; struct { - __le32 reserved1[974]; /* c8h - fffh */ + __le32 reserved1[973]; /* cch - fffh */ struct src_inbound IndexRegs; /* 1000h */ } denali; } u; @@ -1029,6 +1082,11 @@ struct aac_bus_info_response { #define AAC_OPT_NEW_COMM_TYPE3 cpu_to_le32(1<<30) #define AAC_OPT_NEW_COMM_TYPE4 cpu_to_le32(1<<31) +/* MSIX context */ +struct aac_msix_ctx { + int vector_no; + struct aac_dev *dev; +}; struct aac_dev { @@ -1084,8 +1142,10 @@ struct aac_dev * if AAC_COMM_MESSAGE_TYPE1 */ dma_addr_t host_rrq_pa; /* phys. address */ - u32 host_rrq_idx; /* index into rrq buffer */ - + /* index into rrq buffer */ + u32 host_rrq_idx[AAC_MAX_MSIX]; + atomic_t rrq_outstanding[AAC_MAX_MSIX]; + u32 fibs_pushed_no; struct pci_dev *pdev; /* Our PCI interface */ void * printfbuf; /* pointer to buffer used for printf's from the adapter */ void * comm_addr; /* Base address of Comm area */ @@ -1154,6 +1214,11 @@ struct aac_dev int sync_mode; struct fib *sync_fib; struct list_head sync_fib_list; + u32 max_msix; /* max. MSI-X vectors */ + u32 vector_cap; /* MSI-X vector capab.*/ + int msi_enabled; /* MSI/MSI-X enabled */ + struct msix_entry msixentry[AAC_MAX_MSIX]; + struct aac_msix_ctx aac_msix[AAC_MAX_MSIX]; /* context */ }; #define aac_adapter_interrupt(dev) \ @@ -2036,6 +2101,7 @@ void aac_consumer_free(struct aac_dev * dev, struct aac_queue * q, u32 qnum); int aac_fib_complete(struct fib * context); #define fib_data(fibctx) ((void *)(fibctx)->hw_fib_va->data) struct aac_dev *aac_init_adapter(struct aac_dev *dev); +void aac_src_access_devreg(struct aac_dev *dev, int mode); int aac_get_config_status(struct aac_dev *dev, int commit_flag); int aac_get_containers(struct aac_dev *dev); int aac_scsi_cmd(struct scsi_cmnd *cmd); diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c index 177b094..fdd9524 100644 --- a/drivers/scsi/aacraid/comminit.c +++ b/drivers/scsi/aacraid/comminit.c @@ -43,6 +43,8 @@ #include "aacraid.h" +static void aac_define_int_mode(struct aac_dev *dev); + struct aac_common aac_config = { .irq_mod = 1 }; @@ -91,7 +93,7 @@ static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long co init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION); if (dev->max_fib_size != sizeof(struct hw_fib)) init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4); - init->MiniPortRevision = cpu_to_le32(Sa_MINIPORT_REVISION); + init->Sa_MSIXVectors = cpu_to_le32(Sa_MINIPORT_REVISION); init->fsrev = cpu_to_le32(dev->fsrev); /* @@ -140,7 +142,8 @@ static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long co INITFLAGS_NEW_COMM_TYPE2_SUPPORTED | INITFLAGS_FAST_JBOD_SUPPORTED); init->HostRRQ_AddrHigh = cpu_to_le32((u32)((u64)dev->host_rrq_pa >> 32)); init->HostRRQ_AddrLow = cpu_to_le32((u32)(dev->host_rrq_pa & 0xffffffff)); - init->MiniPortRevision = cpu_to_le32(0L); /* number of MSI-X */ + /* number of MSI-X */ + init->Sa_MSIXVectors = cpu_to_le32(dev->max_msix); dprintk((KERN_WARNING"aacraid: New Comm Interface type2 enabled\n")); } @@ -228,6 +231,11 @@ int aac_send_shutdown(struct aac_dev * dev) /* FIB should be freed only after getting the response from the F/W */ if (status != -ERESTARTSYS) aac_fib_free(fibctx); + if ((dev->pdev->device == PMC_DEVICE_S7 || + dev->pdev->device == PMC_DEVICE_S8 || + dev->pdev->device == PMC_DEVICE_S9) && + dev->msi_enabled) + aac_src_access_devreg(dev, AAC_ENABLE_INTX); return status; } @@ -388,6 +396,8 @@ struct aac_dev *aac_init_adapter(struct aac_dev *dev) } } } + dev->max_msix = 0; + dev->msi_enabled = 0; if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS, 0, 0, 0, 0, 0, 0, status+0, status+1, status+2, status+3, status+4)) @@ -461,6 +471,11 @@ struct aac_dev *aac_init_adapter(struct aac_dev *dev) if (host->can_queue > AAC_NUM_IO_FIB) host->can_queue = AAC_NUM_IO_FIB; + if (dev->pdev->device == PMC_DEVICE_S6 || + dev->pdev->device == PMC_DEVICE_S7 || + dev->pdev->device == PMC_DEVICE_S8 || + dev->pdev->device == PMC_DEVICE_S9) + aac_define_int_mode(dev); /* * Ok now init the communication subsystem */ @@ -489,4 +504,78 @@ struct aac_dev *aac_init_adapter(struct aac_dev *dev) return dev; } - +static void aac_define_int_mode(struct aac_dev *dev) +{ + + int i, msi_count; + + /* max. vectors from GET_COMM_PREFERRED_SETTINGS */ + if (dev->max_msix == 0 || + dev->pdev->device == PMC_DEVICE_S6 || + dev->sync_mode) { + dev->max_msix = 1; + dev->vector_cap = + dev->scsi_host_ptr->can_queue + + AAC_NUM_MGT_FIB; + return; + } + + msi_count = min(dev->max_msix, + (unsigned int)num_online_cpus()); + + dev->max_msix = msi_count; + + if (msi_count > AAC_MAX_MSIX) + msi_count = AAC_MAX_MSIX; + + for (i = 0; i < msi_count; i++) + dev->msixentry[i].entry = i; + + if (msi_count > 1 && + pci_find_capability(dev->pdev, PCI_CAP_ID_MSIX)) { + i = pci_enable_msix(dev->pdev, + dev->msixentry, + msi_count); + /* Check how many MSIX vectors are allocated */ + if (i >= 0) { + dev->msi_enabled = 1; + if (i) { + msi_count = i; + if (pci_enable_msix(dev->pdev, + dev->msixentry, + msi_count)) { + dev->msi_enabled = 0; + printk(KERN_ERR "%s%d: MSIX not supported!! Will try MSI 0x%x.\n", + dev->name, dev->id, i); + } + } + } else { + dev->msi_enabled = 0; + printk(KERN_ERR "%s%d: MSIX not supported!! Will try MSI 0x%x.\n", + dev->name, dev->id, i); + } + } + + if (!dev->msi_enabled) { + msi_count = 1; + i = pci_enable_msi(dev->pdev); + + if (!i) { + dev->msi_enabled = 1; + dev->msi = 1; + } else { + printk(KERN_ERR "%s%d: MSI not supported!! Will try INTx 0x%x.\n", + dev->name, dev->id, i); + } + } + + if (!dev->msi_enabled) + dev->max_msix = msi_count = 1; + else { + if (dev->max_msix > msi_count) + dev->max_msix = msi_count; + } + dev->vector_cap = + (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) / + msi_count; +} diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c index 090ba68..e615a0b 100644 --- a/drivers/scsi/aacraid/commsup.c +++ b/drivers/scsi/aacraid/commsup.c @@ -868,7 +868,7 @@ void aac_printf(struct aac_dev *dev, u32 val) * dispatches it to the appropriate routine for handling. */ -#define AIF_SNIFF_TIMEOUT (30*HZ) +#define AIF_SNIFF_TIMEOUT (500*HZ) static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr) { struct hw_fib * hw_fib = fibptr->hw_fib_va; @@ -1251,7 +1251,7 @@ retry_next: static int _aac_reset_adapter(struct aac_dev *aac, int forced) { int index, quirks; - int retval; + int retval, i; struct Scsi_Host *host; struct scsi_device *dev; struct scsi_cmnd *command; @@ -1319,7 +1319,21 @@ static int _aac_reset_adapter(struct aac_dev *aac, int forced) aac->comm_phys = 0; kfree(aac->queues); aac->queues = NULL; - free_irq(aac->pdev->irq, aac); + if (aac->pdev->device == PMC_DEVICE_S6 || + aac->pdev->device == PMC_DEVICE_S7 || + aac->pdev->device == PMC_DEVICE_S8 || + aac->pdev->device == PMC_DEVICE_S9) { + if (aac->max_msix > 1) { + for (i = 0; i < aac->max_msix; i++) + free_irq(aac->msixentry[i].vector, + &(aac->aac_msix[i])); + pci_disable_msix(aac->pdev); + } else { + free_irq(aac->pdev->irq, &(aac->aac_msix[0])); + } + } else { + free_irq(aac->pdev->irq, aac); + } if (aac->msi) pci_disable_msi(aac->pdev); kfree(aac->fsa_dev); diff --git a/drivers/scsi/aacraid/dpcsup.c b/drivers/scsi/aacraid/dpcsup.c index d81b281..2e39466 100644 --- a/drivers/scsi/aacraid/dpcsup.c +++ b/drivers/scsi/aacraid/dpcsup.c @@ -389,8 +389,13 @@ unsigned int aac_intr_normal(struct aac_dev *dev, u32 index, * NOTE: we cannot touch the fib after this * call, because it may have been deallocated. */ - fib->flags &= FIB_CONTEXT_FLAG_FASTRESP; - fib->callback(fib->callback_data, fib); + if (likely(fib->callback && fib->callback_data)) { + fib->flags &= FIB_CONTEXT_FLAG_FASTRESP; + fib->callback(fib->callback_data, fib); + } else { + aac_fib_complete(fib); + aac_fib_free(fib); + } } else { unsigned long flagv; dprintk((KERN_INFO "event_wait up\n")); diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index fdcdf9f..75c3501 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -1082,6 +1082,8 @@ static struct scsi_host_template aac_driver_template = { static void __aac_shutdown(struct aac_dev * aac) { + int i; + if (aac->aif_thread) { int i; /* Clear out events first */ @@ -1095,9 +1097,25 @@ static void __aac_shutdown(struct aac_dev * aac) } aac_send_shutdown(aac); aac_adapter_disable_int(aac); - free_irq(aac->pdev->irq, aac); + if (aac->pdev->device == PMC_DEVICE_S6 || + aac->pdev->device == PMC_DEVICE_S7 || + aac->pdev->device == PMC_DEVICE_S8 || + aac->pdev->device == PMC_DEVICE_S9) { + if (aac->max_msix > 1) { + for (i = 0; i < aac->max_msix; i++) + free_irq(aac->msixentry[i].vector, + &(aac->aac_msix[i])); + } else { + free_irq(aac->pdev->irq, + &(aac->aac_msix[0])); + } + } else { + free_irq(aac->pdev->irq, aac); + } if (aac->msi) pci_disable_msi(aac->pdev); + else if (aac->max_msix > 1) + pci_disable_msix(aac->pdev); } static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) diff --git a/drivers/scsi/aacraid/src.c b/drivers/scsi/aacraid/src.c index 9c65aed..50f181f 100644 --- a/drivers/scsi/aacraid/src.c +++ b/drivers/scsi/aacraid/src.c @@ -44,98 +44,128 @@ #include "aacraid.h" -static irqreturn_t aac_src_intr_message(int irq, void *dev_id) +static int aac_src_get_sync_status(struct aac_dev *dev); + +irqreturn_t aac_src_intr_message(int irq, void *dev_id) { - struct aac_dev *dev = dev_id; + struct aac_msix_ctx *ctx; + struct aac_dev *dev; unsigned long bellbits, bellbits_shifted; - int our_interrupt = 0; - int isFastResponse; + int vector_no; + int isFastResponse, mode; u32 index, handle; - bellbits = src_readl(dev, MUnit.ODR_R); - if (bellbits & PmDoorBellResponseSent) { - bellbits = PmDoorBellResponseSent; - /* handle async. status */ - src_writel(dev, MUnit.ODR_C, bellbits); - src_readl(dev, MUnit.ODR_C); - our_interrupt = 1; - index = dev->host_rrq_idx; - for (;;) { - isFastResponse = 0; - /* remove toggle bit (31) */ - handle = le32_to_cpu(dev->host_rrq[index]) & 0x7fffffff; - /* check fast response bit (30) */ - if (handle & 0x40000000) - isFastResponse = 1; - handle &= 0x0000ffff; - if (handle == 0) - break; - - aac_intr_normal(dev, handle-1, 0, isFastResponse, NULL); - - dev->host_rrq[index++] = 0; - if (index == dev->scsi_host_ptr->can_queue + - AAC_NUM_MGT_FIB) - index = 0; - dev->host_rrq_idx = index; + ctx = (struct aac_msix_ctx *)dev_id; + dev = ctx->dev; + vector_no = ctx->vector_no; + + if (dev->msi_enabled) { + mode = AAC_INT_MODE_MSI; + if (vector_no == 0) { + bellbits = src_readl(dev, MUnit.ODR_MSI); + if (bellbits & 0x40000) + mode |= AAC_INT_MODE_AIF; + if (bellbits & 0x1000) + mode |= AAC_INT_MODE_SYNC; } } else { - bellbits_shifted = (bellbits >> SRC_ODR_SHIFT); - if (bellbits_shifted & DoorBellAifPending) { + mode = AAC_INT_MODE_INTX; + bellbits = src_readl(dev, MUnit.ODR_R); + if (bellbits & PmDoorBellResponseSent) { + bellbits = PmDoorBellResponseSent; + src_writel(dev, MUnit.ODR_C, bellbits); + src_readl(dev, MUnit.ODR_C); + } else { + bellbits_shifted = (bellbits >> SRC_ODR_SHIFT); src_writel(dev, MUnit.ODR_C, bellbits); src_readl(dev, MUnit.ODR_C); - our_interrupt = 1; - /* handle AIF */ - aac_intr_normal(dev, 0, 2, 0, NULL); - } else if (bellbits_shifted & OUTBOUNDDOORBELL_0) { - unsigned long sflags; - struct list_head *entry; - int send_it = 0; - extern int aac_sync_mode; + if (bellbits_shifted & DoorBellAifPending) + mode |= AAC_INT_MODE_AIF; + else if (bellbits_shifted & OUTBOUNDDOORBELL_0) + mode |= AAC_INT_MODE_SYNC; + } + } + + if (mode & AAC_INT_MODE_SYNC) { + unsigned long sflags; + struct list_head *entry; + int send_it = 0; + extern int aac_sync_mode; + + if (!aac_sync_mode && !dev->msi_enabled) { src_writel(dev, MUnit.ODR_C, bellbits); src_readl(dev, MUnit.ODR_C); + } - if (!aac_sync_mode) { - src_writel(dev, MUnit.ODR_C, bellbits); - src_readl(dev, MUnit.ODR_C); - our_interrupt = 1; + if (dev->sync_fib) { + if (dev->sync_fib->callback) + dev->sync_fib->callback(dev->sync_fib->callback_data, + dev->sync_fib); + spin_lock_irqsave(&dev->sync_fib->event_lock, sflags); + if (dev->sync_fib->flags & FIB_CONTEXT_FLAG_WAIT) { + dev->management_fib_count--; + up(&dev->sync_fib->event_wait); } - - if (dev->sync_fib) { - our_interrupt = 1; - if (dev->sync_fib->callback) - dev->sync_fib->callback(dev->sync_fib->callback_data, - dev->sync_fib); - spin_lock_irqsave(&dev->sync_fib->event_lock, sflags); - if (dev->sync_fib->flags & FIB_CONTEXT_FLAG_WAIT) { - dev->management_fib_count--; - up(&dev->sync_fib->event_wait); - } - spin_unlock_irqrestore(&dev->sync_fib->event_lock, sflags); - spin_lock_irqsave(&dev->sync_lock, sflags); - if (!list_empty(&dev->sync_fib_list)) { - entry = dev->sync_fib_list.next; - dev->sync_fib = list_entry(entry, struct fib, fiblink); - list_del(entry); - send_it = 1; - } else { - dev->sync_fib = NULL; - } - spin_unlock_irqrestore(&dev->sync_lock, sflags); - if (send_it) { - aac_adapter_sync_cmd(dev, SEND_SYNCHRONOUS_FIB, - (u32)dev->sync_fib->hw_fib_pa, 0, 0, 0, 0, 0, - NULL, NULL, NULL, NULL, NULL); - } + spin_unlock_irqrestore(&dev->sync_fib->event_lock, + sflags); + spin_lock_irqsave(&dev->sync_lock, sflags); + if (!list_empty(&dev->sync_fib_list)) { + entry = dev->sync_fib_list.next; + dev->sync_fib = list_entry(entry, + struct fib, + fiblink); + list_del(entry); + send_it = 1; + } else { + dev->sync_fib = NULL; + } + spin_unlock_irqrestore(&dev->sync_lock, sflags); + if (send_it) { + aac_adapter_sync_cmd(dev, SEND_SYNCHRONOUS_FIB, + (u32)dev->sync_fib->hw_fib_pa, + 0, 0, 0, 0, 0, + NULL, NULL, NULL, NULL, NULL); } } + if (!dev->msi_enabled) + mode = 0; + } - if (our_interrupt) { - return IRQ_HANDLED; + if (mode & AAC_INT_MODE_AIF) { + /* handle AIF */ + aac_intr_normal(dev, 0, 2, 0, NULL); + if (dev->msi_enabled) + aac_src_access_devreg(dev, AAC_CLEAR_AIF_BIT); + mode = 0; } - return IRQ_NONE; + + if (mode) { + index = dev->host_rrq_idx[vector_no]; + + for (;;) { + isFastResponse = 0; + /* remove toggle bit (31) */ + handle = (dev->host_rrq[index] & 0x7fffffff); + /* check fast response bit (30) */ + if (handle & 0x40000000) + isFastResponse = 1; + handle &= 0x0000ffff; + if (handle == 0) + break; + if (dev->msi_enabled && dev->max_msix > 1) + atomic_dec(&dev->rrq_outstanding[vector_no]); + aac_intr_normal(dev, handle-1, 0, isFastResponse, NULL); + dev->host_rrq[index++] = 0; + if (index == (vector_no + 1) * dev->vector_cap) + index = vector_no * dev->vector_cap; + dev->host_rrq_idx[vector_no] = index; + } + mode = 0; + } + + return IRQ_HANDLED; } /** @@ -155,7 +185,7 @@ static void aac_src_disable_interrupt(struct aac_dev *dev) static void aac_src_enable_interrupt_message(struct aac_dev *dev) { - src_writel(dev, MUnit.OIMR, dev->OIMR = 0xfffffff8); + aac_src_access_devreg(dev, AAC_ENABLE_INTERRUPT); } /** @@ -191,7 +221,10 @@ static int src_sync_cmd(struct aac_dev *dev, u32 command, /* * Clear the synch command doorbell to start on a clean slate. */ - src_writel(dev, MUnit.ODR_C, OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT); + if (!dev->msi_enabled) + src_writel(dev, + MUnit.ODR_C, + OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT); /* * Disable doorbell interrupts @@ -221,11 +254,17 @@ static int src_sync_cmd(struct aac_dev *dev, u32 command, /* * Mon960 will set doorbell0 bit when it has completed the command. */ - if ((src_readl(dev, MUnit.ODR_R) >> SRC_ODR_SHIFT) & OUTBOUNDDOORBELL_0) { + if (aac_src_get_sync_status(dev) & OUTBOUNDDOORBELL_0) { /* * Clear the doorbell. */ - src_writel(dev, MUnit.ODR_C, OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT); + if (dev->msi_enabled) + aac_src_access_devreg(dev, + AAC_CLEAR_SYNC_BIT); + else + src_writel(dev, + MUnit.ODR_C, + OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT); ok = 1; break; } @@ -254,11 +293,16 @@ static int src_sync_cmd(struct aac_dev *dev, u32 command, *r3 = readl(&dev->IndexRegs->Mailbox[3]); if (r4) *r4 = readl(&dev->IndexRegs->Mailbox[4]); - + if (command == GET_COMM_PREFERRED_SETTINGS) + dev->max_msix = + readl(&dev->IndexRegs->Mailbox[5]) & 0xFFFF; /* * Clear the synch command doorbell. */ - src_writel(dev, MUnit.ODR_C, OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT); + if (!dev->msi_enabled) + src_writel(dev, + MUnit.ODR_C, + OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT); } /* @@ -335,9 +379,14 @@ static void aac_src_notify_adapter(struct aac_dev *dev, u32 event) static void aac_src_start_adapter(struct aac_dev *dev) { struct aac_init *init; + int i; /* reset host_rrq_idx first */ - dev->host_rrq_idx = 0; + for (i = 0; i < dev->max_msix; i++) { + dev->host_rrq_idx[i] = i * dev->vector_cap; + atomic_set(&dev->rrq_outstanding[i], 0); + } + dev->fibs_pushed_no = 0; init = dev->init; init->HostElapsedSeconds = cpu_to_le32(get_seconds()); @@ -400,6 +449,33 @@ static int aac_src_deliver_message(struct fib *fib) q->numpending++; spin_unlock_irqrestore(q->lock, qflags); + if (dev->msi_enabled && fib->hw_fib_va->header.Command != AifRequest && + dev->max_msix > 1) { + u_int16_t vector_no, first_choice = 0xffff; + + vector_no = dev->fibs_pushed_no % dev->max_msix; + do { + vector_no += 1; + if (vector_no == dev->max_msix) + vector_no = 1; + if (atomic_read(&dev->rrq_outstanding[vector_no]) < + dev->vector_cap) + break; + if (0xffff == first_choice) + first_choice = vector_no; + else if (vector_no == first_choice) + break; + } while (1); + if (vector_no == first_choice) + vector_no = 0; + atomic_inc(&dev->rrq_outstanding[vector_no]); + if (dev->fibs_pushed_no == 0xffffffff) + dev->fibs_pushed_no = 0; + else + dev->fibs_pushed_no++; + fib->hw_fib_va->header.Handle += (vector_no << 16); + } + if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) { /* Calculate the amount to the fibsize bits */ fibsize = (hdr_size + 127) / 128 - 1; @@ -502,10 +578,19 @@ static int aac_src_restart_adapter(struct aac_dev *dev, int bled) 0, 0, 0, 0, 0, 0, &var, &reset_mask, NULL, NULL, NULL); if (bled || (var != 0x00000001)) return -EINVAL; + + if ((dev->pdev->device == PMC_DEVICE_S7 || + dev->pdev->device == PMC_DEVICE_S8 || + dev->pdev->device == PMC_DEVICE_S9) && dev->msi_enabled) { + aac_src_access_devreg(dev, AAC_ENABLE_INTX); + dev->msi_enabled = 0; + msleep(5000); /* Delay 5 seconds */ + } + if (dev->supplement_adapter_info.SupportedOptions2 & AAC_OPTION_DOORBELL_RESET) { src_writel(dev, MUnit.IDR, reset_mask); - msleep(5000); /* Delay 5 seconds */ + ssleep(45); } } @@ -646,8 +731,11 @@ int aac_src_init(struct aac_dev *dev) dev->msi = aac_msi && !pci_enable_msi(dev->pdev); + dev->aac_msix[0].vector_no = 0; + dev->aac_msix[0].dev = dev; + if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr, - IRQF_SHARED, "aacraid", dev) < 0) { + IRQF_SHARED, "aacraid", &(dev->aac_msix[0])) < 0) { if (dev->msi) pci_disable_msi(dev->pdev); @@ -688,6 +776,7 @@ int aac_srcv_init(struct aac_dev *dev) unsigned long status; int restart = 0; int instance = dev->id; + int i, j; const char *name = dev->name; dev->a_ops.adapter_ioremap = aac_srcv_ioremap; @@ -802,14 +891,41 @@ int aac_srcv_init(struct aac_dev *dev) goto error_iounmap; if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE2) goto error_iounmap; - dev->msi = aac_msi && !pci_enable_msi(dev->pdev); - if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr, - IRQF_SHARED, "aacraid", dev) < 0) { - if (dev->msi) - pci_disable_msi(dev->pdev); - printk(KERN_ERR "%s%d: Interrupt unavailable.\n", - name, instance); - goto error_iounmap; + if (dev->msi_enabled) + aac_src_access_devreg(dev, AAC_ENABLE_MSIX); + if (!dev->sync_mode && dev->msi_enabled && dev->max_msix > 1) { + for (i = 0; i < dev->max_msix; i++) { + dev->aac_msix[i].vector_no = i; + dev->aac_msix[i].dev = dev; + + if (request_irq(dev->msixentry[i].vector, + dev->a_ops.adapter_intr, + 0, + "aacraid", + &(dev->aac_msix[i]))) { + printk(KERN_ERR "%s%d: Failed to register IRQ for vector %d.\n", + name, instance, i); + for (j = 0 ; j < i ; j++) + free_irq(dev->msixentry[j].vector, + &(dev->aac_msix[j])); + pci_disable_msix(dev->pdev); + goto error_iounmap; + } + } + } else { + dev->aac_msix[0].vector_no = 0; + dev->aac_msix[0].dev = dev; + + if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr, + IRQF_SHARED, + "aacraid", + &(dev->aac_msix[0])) < 0) { + if (dev->msi) + pci_disable_msi(dev->pdev); + printk(KERN_ERR "%s%d: Interrupt unavailable.\n", + name, instance); + goto error_iounmap; + } } dev->dbg_base = dev->base_start; dev->dbg_base_mapped = dev->base; @@ -831,3 +947,93 @@ error_iounmap: return -1; } +void aac_src_access_devreg(struct aac_dev *dev, int mode) +{ + u_int32_t val; + + switch (mode) { + case AAC_ENABLE_INTERRUPT: + src_writel(dev, + MUnit.OIMR, + dev->OIMR = (dev->msi_enabled ? + AAC_INT_ENABLE_TYPE1_MSIX : + AAC_INT_ENABLE_TYPE1_INTX)); + break; + + case AAC_DISABLE_INTERRUPT: + src_writel(dev, + MUnit.OIMR, + dev->OIMR = AAC_INT_DISABLE_ALL); + break; + + case AAC_ENABLE_MSIX: + /* set bit 6 */ + val = src_readl(dev, MUnit.IDR); + val |= 0x40; + src_writel(dev, MUnit.IDR, val); + src_readl(dev, MUnit.IDR); + /* unmask int. */ + val = PMC_ALL_INTERRUPT_BITS; + src_writel(dev, MUnit.IOAR, val); + val = src_readl(dev, MUnit.OIMR); + src_writel(dev, + MUnit.OIMR, + val & (~(PMC_GLOBAL_INT_BIT2 | PMC_GLOBAL_INT_BIT0))); + break; + + case AAC_DISABLE_MSIX: + /* reset bit 6 */ + val = src_readl(dev, MUnit.IDR); + val &= ~0x40; + src_writel(dev, MUnit.IDR, val); + src_readl(dev, MUnit.IDR); + break; + + case AAC_CLEAR_AIF_BIT: + /* set bit 5 */ + val = src_readl(dev, MUnit.IDR); + val |= 0x20; + src_writel(dev, MUnit.IDR, val); + src_readl(dev, MUnit.IDR); + break; + + case AAC_CLEAR_SYNC_BIT: + /* set bit 4 */ + val = src_readl(dev, MUnit.IDR); + val |= 0x10; + src_writel(dev, MUnit.IDR, val); + src_readl(dev, MUnit.IDR); + break; + + case AAC_ENABLE_INTX: + /* set bit 7 */ + val = src_readl(dev, MUnit.IDR); + val |= 0x80; + src_writel(dev, MUnit.IDR, val); + src_readl(dev, MUnit.IDR); + /* unmask int. */ + val = PMC_ALL_INTERRUPT_BITS; + src_writel(dev, MUnit.IOAR, val); + src_readl(dev, MUnit.IOAR); + val = src_readl(dev, MUnit.OIMR); + src_writel(dev, MUnit.OIMR, + val & (~(PMC_GLOBAL_INT_BIT2))); + break; + + default: + break; + } +} + +static int aac_src_get_sync_status(struct aac_dev *dev) +{ + + int val; + + if (dev->msi_enabled) + val = src_readl(dev, MUnit.ODR_MSI) & 0x1000 ? 1 : 0; + else + val = src_readl(dev, MUnit.ODR_R) >> SRC_ODR_SHIFT; + + return val; +}