From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 6BA76A00E6 for ; Thu, 8 Aug 2019 10:45:45 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id D9C85137C; Thu, 8 Aug 2019 10:45:35 +0200 (CEST) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by dpdk.org (Postfix) with ESMTP id DE69E2A6A for ; Thu, 8 Aug 2019 10:45:33 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Aug 2019 01:45:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,360,1559545200"; d="scan'208";a="350108551" Received: from dpdk-rosen-02.sh.intel.com ([10.67.111.116]) by orsmga005.jf.intel.com with ESMTP; 08 Aug 2019 01:45:31 -0700 From: Rosen Xu To: dev@dpdk.org Cc: ferruh.yigit@intel.com, tianfei.zhang@intel.com, rosen.xu@intel.com, andy.pei@intel.com, david.lomartire@intel.com, qi.z.zhang@intel.com, xiaolong.ye@intel.com Date: Thu, 8 Aug 2019 16:46:03 +0800 Message-Id: <1565253974-183591-3-git-send-email-rosen.xu@intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1565253974-183591-1-git-send-email-rosen.xu@intel.com> References: <1564556752-19257-2-git-send-email-rosen.xu@intel.com> <1565253974-183591-1-git-send-email-rosen.xu@intel.com> Subject: [dpdk-dev] [PATCH v3 02/13] raw/ifpga_rawdev/base: add irq support X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Tianfei zhang Add irq support for ifpga FME globle error, port error and uint unit. We implmented this feature by vfio interrupt mechanism. Signed-off-by: Tianfei zhang --- drivers/raw/ifpga_rawdev/base/ifpga_feature_dev.c | 61 +++++++++++++++++++++++ drivers/raw/ifpga_rawdev/base/ifpga_fme_error.c | 22 ++++++++ drivers/raw/ifpga_rawdev/base/ifpga_port.c | 20 ++++++++ drivers/raw/ifpga_rawdev/base/ifpga_port_error.c | 21 ++++++++ 4 files changed, 124 insertions(+) diff --git a/drivers/raw/ifpga_rawdev/base/ifpga_feature_dev.c b/drivers/raw/ifpga_rawdev/base/ifpga_feature_dev.c index 63c8bcc..6b942e6 100644 --- a/drivers/raw/ifpga_rawdev/base/ifpga_feature_dev.c +++ b/drivers/raw/ifpga_rawdev/base/ifpga_feature_dev.c @@ -3,6 +3,7 @@ */ #include +#include #include "ifpga_feature_dev.h" @@ -331,3 +332,63 @@ int port_hw_init(struct ifpga_port_hw *port) port_hw_uinit(port); return ret; } + +/* + * FIXME: we should get msix vec count during pci enumeration instead of + * below hardcode value. + */ +#define FPGA_MSIX_VEC_COUNT 20 +/* irq set buffer length for interrupt */ +#define MSIX_IRQ_SET_BUF_LEN (sizeof(struct vfio_irq_set) + \ + sizeof(int) * FPGA_MSIX_VEC_COUNT) + +/* only support msix for now*/ +static int vfio_msix_enable_block(s32 vfio_dev_fd, unsigned int vec_start, + unsigned int count, s32 *fds) +{ + char irq_set_buf[MSIX_IRQ_SET_BUF_LEN]; + struct vfio_irq_set *irq_set; + int len, ret; + int *fd_ptr; + + len = sizeof(irq_set_buf); + + irq_set = (struct vfio_irq_set *)irq_set_buf; + irq_set->argsz = len; + irq_set->count = count; + irq_set->flags = VFIO_IRQ_SET_DATA_EVENTFD | + VFIO_IRQ_SET_ACTION_TRIGGER; + irq_set->index = VFIO_PCI_MSIX_IRQ_INDEX; + irq_set->start = vec_start; + + fd_ptr = (int *)&irq_set->data; + memcpy(fd_ptr, fds, sizeof(int) * count); + + ret = ioctl(vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set); + if (ret) + printf("Error enabling MSI-X interrupts\n"); + + return ret; +} + +int fpga_msix_set_block(struct ifpga_feature *feature, unsigned int start, + unsigned int count, s32 *fds) +{ + struct feature_irq_ctx *ctx = feature->ctx; + unsigned int i; + int ret; + + if (start >= feature->ctx_num || start + count > feature->ctx_num) + return -EINVAL; + + /* assume that each feature has continuous vector space in msix*/ + ret = vfio_msix_enable_block(feature->vfio_dev_fd, + ctx[start].idx, count, fds); + if (!ret) { + for (i = 0; i < count; i++) + ctx[i].eventfd = fds[i]; + } + + return ret; +} + diff --git a/drivers/raw/ifpga_rawdev/base/ifpga_fme_error.c b/drivers/raw/ifpga_rawdev/base/ifpga_fme_error.c index 3794564..068f52c 100644 --- a/drivers/raw/ifpga_rawdev/base/ifpga_fme_error.c +++ b/drivers/raw/ifpga_rawdev/base/ifpga_fme_error.c @@ -373,9 +373,31 @@ static int fme_global_error_set_prop(struct ifpga_feature *feature, return -ENOENT; } +static int fme_global_err_set_irq(struct ifpga_feature *feature, void *irq_set) +{ + struct fpga_fme_err_irq_set *err_irq_set = + (struct fpga_fme_err_irq_set *)irq_set; + struct ifpga_fme_hw *fme; + int ret; + + fme = (struct ifpga_fme_hw *)feature->parent; + + spinlock_lock(&fme->lock); + if (!(fme->capability & FPGA_FME_CAP_ERR_IRQ)) { + spinlock_unlock(&fme->lock); + return -ENODEV; + } + + ret = fpga_msix_set_block(feature, 0, 1, &err_irq_set->evtfd); + spinlock_unlock(&fme->lock); + + return ret; +} + struct ifpga_feature_ops fme_global_err_ops = { .init = fme_global_error_init, .uinit = fme_global_error_uinit, .get_prop = fme_global_error_get_prop, .set_prop = fme_global_error_set_prop, + .set_irq = fme_global_err_set_irq, }; diff --git a/drivers/raw/ifpga_rawdev/base/ifpga_port.c b/drivers/raw/ifpga_rawdev/base/ifpga_port.c index 6c41164..56b04a6 100644 --- a/drivers/raw/ifpga_rawdev/base/ifpga_port.c +++ b/drivers/raw/ifpga_rawdev/base/ifpga_port.c @@ -384,9 +384,29 @@ static void port_uint_uinit(struct ifpga_feature *feature) dev_info(NULL, "PORT UINT UInit.\n"); } +static int port_uint_set_irq(struct ifpga_feature *feature, void *irq_set) +{ + struct fpga_uafu_irq_set *uafu_irq_set = irq_set; + struct ifpga_port_hw *port = feature->parent; + int ret; + + spinlock_lock(&port->lock); + if (!(port->capability & FPGA_PORT_CAP_UAFU_IRQ)) { + spinlock_unlock(&port->lock); + return -ENODEV; + } + + ret = fpga_msix_set_block(feature, uafu_irq_set->start, + uafu_irq_set->count, uafu_irq_set->evtfds); + spinlock_unlock(&port->lock); + + return ret; +} + struct ifpga_feature_ops ifpga_rawdev_port_uint_ops = { .init = port_uint_init, .uinit = port_uint_uinit, + .set_irq = port_uint_set_irq, }; static int port_afu_init(struct ifpga_feature *feature) diff --git a/drivers/raw/ifpga_rawdev/base/ifpga_port_error.c b/drivers/raw/ifpga_rawdev/base/ifpga_port_error.c index 138284e..8aef7d7 100644 --- a/drivers/raw/ifpga_rawdev/base/ifpga_port_error.c +++ b/drivers/raw/ifpga_rawdev/base/ifpga_port_error.c @@ -136,9 +136,30 @@ static int port_error_set_prop(struct ifpga_feature *feature, return -ENOENT; } +static int port_error_set_irq(struct ifpga_feature *feature, void *irq_set) +{ + struct fpga_port_err_irq_set *err_irq_set = irq_set; + struct ifpga_port_hw *port; + int ret; + + port = feature->parent; + + spinlock_lock(&port->lock); + if (!(port->capability & FPGA_PORT_CAP_ERR_IRQ)) { + spinlock_unlock(&port->lock); + return -ENODEV; + } + + ret = fpga_msix_set_block(feature, 0, 1, &err_irq_set->evtfd); + spinlock_unlock(&port->lock); + + return ret; +} + struct ifpga_feature_ops ifpga_rawdev_port_error_ops = { .init = port_error_init, .uinit = port_error_uinit, .get_prop = port_error_get_prop, .set_prop = port_error_set_prop, + .set_irq = port_error_set_irq, }; -- 1.8.3.1