From patchwork Mon Feb 22 18:32:14 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Williamson X-Patchwork-Id: 586477 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 49275140BF8 for ; Tue, 23 Feb 2016 05:32:54 +1100 (AEDT) Received: from localhost ([::1]:51141 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aXvHw-0007zN-Bv for incoming@patchwork.ozlabs.org; Mon, 22 Feb 2016 13:32:52 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34338) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aXvHP-000738-AQ for qemu-devel@nongnu.org; Mon, 22 Feb 2016 13:32:20 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aXvHM-0003ud-12 for qemu-devel@nongnu.org; Mon, 22 Feb 2016 13:32:19 -0500 Received: from mx1.redhat.com ([209.132.183.28]:37591) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aXvHL-0003uE-NF for qemu-devel@nongnu.org; Mon, 22 Feb 2016 13:32:15 -0500 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (Postfix) with ESMTPS id 6035065409 for ; Mon, 22 Feb 2016 18:32:15 +0000 (UTC) Received: from gimli.home (ovpn-113-102.phx2.redhat.com [10.3.113.102]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u1MIWEcv001061; Mon, 22 Feb 2016 13:32:15 -0500 From: Alex Williamson To: qemu-devel@nongnu.org Date: Mon, 22 Feb 2016 11:32:14 -0700 Message-ID: <20160222183214.31442.62402.stgit@gimli.home> In-Reply-To: <20160222181456.31442.45740.stgit@gimli.home> References: <20160222181456.31442.45740.stgit@gimli.home> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.68 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Mon, 22 Feb 2016 18:32:15 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Cc: alex.williamson@redhat.com Subject: [Qemu-devel] [PATCH 2/6] vfio: Wrap VFIO_DEVICE_GET_REGION_INFO X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org In preparation for supporting capability chains on regions, wrap ioctl(VFIO_DEVICE_GET_REGION_INFO) so we don't duplicate the code for each caller. Signed-off-by: Alex Williamson --- hw/vfio/common.c | 18 +++++++++ hw/vfio/pci.c | 81 +++++++++++++++++++++-------------------- hw/vfio/platform.c | 13 ++++--- include/hw/vfio/vfio-common.h | 3 ++ 4 files changed, 69 insertions(+), 46 deletions(-) diff --git a/hw/vfio/common.c b/hw/vfio/common.c index 607ec70..e20fc4f 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -959,6 +959,24 @@ void vfio_put_base_device(VFIODevice *vbasedev) close(vbasedev->fd); } +int vfio_get_region_info(VFIODevice *vbasedev, int index, + struct vfio_region_info **info) +{ + size_t argsz = sizeof(struct vfio_region_info); + + *info = g_malloc0(argsz); + + (*info)->index = index; + (*info)->argsz = argsz; + + if (ioctl(vbasedev->fd, VFIO_DEVICE_GET_REGION_INFO, *info)) { + g_free(*info); + return -errno; + } + + return 0; +} + static int vfio_container_do_ioctl(AddressSpace *as, int32_t groupid, int req, void *param) { diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index ef9faf6..db7a950 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -783,25 +783,25 @@ static void vfio_update_msi(VFIOPCIDevice *vdev) static void vfio_pci_load_rom(VFIOPCIDevice *vdev) { - struct vfio_region_info reg_info = { - .argsz = sizeof(reg_info), - .index = VFIO_PCI_ROM_REGION_INDEX - }; + struct vfio_region_info *reg_info; uint64_t size; off_t off = 0; ssize_t bytes; - if (ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_REGION_INFO, ®_info)) { + if (vfio_get_region_info(&vdev->vbasedev, + VFIO_PCI_ROM_REGION_INDEX, ®_info)) { error_report("vfio: Error getting ROM info: %m"); return; } - trace_vfio_pci_load_rom(vdev->vbasedev.name, (unsigned long)reg_info.size, - (unsigned long)reg_info.offset, - (unsigned long)reg_info.flags); + trace_vfio_pci_load_rom(vdev->vbasedev.name, (unsigned long)reg_info->size, + (unsigned long)reg_info->offset, + (unsigned long)reg_info->flags); + + vdev->rom_size = size = reg_info->size; + vdev->rom_offset = reg_info->offset; - vdev->rom_size = size = reg_info.size; - vdev->rom_offset = reg_info.offset; + g_free(reg_info); if (!vdev->rom_size) { vdev->rom_read_failed = true; @@ -2027,7 +2027,7 @@ static VFIODeviceOps vfio_pci_ops = { static int vfio_populate_device(VFIOPCIDevice *vdev) { VFIODevice *vbasedev = &vdev->vbasedev; - struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) }; + struct vfio_region_info *reg_info; struct vfio_irq_info irq_info = { .argsz = sizeof(irq_info) }; int i, ret = -1; @@ -2049,72 +2049,73 @@ static int vfio_populate_device(VFIOPCIDevice *vdev) } for (i = VFIO_PCI_BAR0_REGION_INDEX; i < VFIO_PCI_ROM_REGION_INDEX; i++) { - reg_info.index = i; - - ret = ioctl(vbasedev->fd, VFIO_DEVICE_GET_REGION_INFO, ®_info); + ret = vfio_get_region_info(vbasedev, i, ®_info); if (ret) { error_report("vfio: Error getting region %d info: %m", i); goto error; } trace_vfio_populate_device_region(vbasedev->name, i, - (unsigned long)reg_info.size, - (unsigned long)reg_info.offset, - (unsigned long)reg_info.flags); + (unsigned long)reg_info->size, + (unsigned long)reg_info->offset, + (unsigned long)reg_info->flags); vdev->bars[i].region.vbasedev = vbasedev; - vdev->bars[i].region.flags = reg_info.flags; - vdev->bars[i].region.size = reg_info.size; - vdev->bars[i].region.fd_offset = reg_info.offset; + vdev->bars[i].region.flags = reg_info->flags; + vdev->bars[i].region.size = reg_info->size; + vdev->bars[i].region.fd_offset = reg_info->offset; vdev->bars[i].region.nr = i; QLIST_INIT(&vdev->bars[i].quirks); - } - reg_info.index = VFIO_PCI_CONFIG_REGION_INDEX; + g_free(reg_info); + } - ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_REGION_INFO, ®_info); + ret = vfio_get_region_info(vbasedev, + VFIO_PCI_CONFIG_REGION_INDEX, ®_info); if (ret) { error_report("vfio: Error getting config info: %m"); goto error; } trace_vfio_populate_device_config(vdev->vbasedev.name, - (unsigned long)reg_info.size, - (unsigned long)reg_info.offset, - (unsigned long)reg_info.flags); + (unsigned long)reg_info->size, + (unsigned long)reg_info->offset, + (unsigned long)reg_info->flags); - vdev->config_size = reg_info.size; + vdev->config_size = reg_info->size; if (vdev->config_size == PCI_CONFIG_SPACE_SIZE) { vdev->pdev.cap_present &= ~QEMU_PCI_CAP_EXPRESS; } - vdev->config_offset = reg_info.offset; + vdev->config_offset = reg_info->offset; + + g_free(reg_info); if ((vdev->features & VFIO_FEATURE_ENABLE_VGA) && vbasedev->num_regions > VFIO_PCI_VGA_REGION_INDEX) { - struct vfio_region_info vga_info = { - .argsz = sizeof(vga_info), - .index = VFIO_PCI_VGA_REGION_INDEX, - }; - - ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_REGION_INFO, &vga_info); + ret = vfio_get_region_info(vbasedev, + VFIO_PCI_VGA_REGION_INDEX, ®_info); if (ret) { error_report( "vfio: Device does not support requested feature x-vga"); goto error; } - if (!(vga_info.flags & VFIO_REGION_INFO_FLAG_READ) || - !(vga_info.flags & VFIO_REGION_INFO_FLAG_WRITE) || - vga_info.size < 0xbffff + 1) { + if (!(reg_info->flags & VFIO_REGION_INFO_FLAG_READ) || + !(reg_info->flags & VFIO_REGION_INFO_FLAG_WRITE) || + reg_info->size < 0xbffff + 1) { error_report("vfio: Unexpected VGA info, flags 0x%lx, size 0x%lx", - (unsigned long)vga_info.flags, - (unsigned long)vga_info.size); + (unsigned long)reg_info->flags, + (unsigned long)reg_info->size); + g_free(reg_info); + ret = -1; goto error; } - vdev->vga.fd_offset = vga_info.offset; + vdev->vga.fd_offset = reg_info->offset; vdev->vga.fd = vdev->vbasedev.fd; + g_free(reg_info); + vdev->vga.region[QEMU_PCI_VGA_MEM].offset = QEMU_PCI_VGA_MEM_BASE; vdev->vga.region[QEMU_PCI_VGA_MEM].nr = QEMU_PCI_VGA_MEM; QLIST_INIT(&vdev->vga.region[QEMU_PCI_VGA_MEM].quirks); diff --git a/hw/vfio/platform.c b/hw/vfio/platform.c index 6c8b54a..f9b9c20 100644 --- a/hw/vfio/platform.c +++ b/hw/vfio/platform.c @@ -476,23 +476,24 @@ static int vfio_populate_device(VFIODevice *vbasedev) vdev->regions = g_new0(VFIORegion *, vbasedev->num_regions); for (i = 0; i < vbasedev->num_regions; i++) { - struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) }; + struct vfio_region_info *reg_info; VFIORegion *ptr; vdev->regions[i] = g_new0(VFIORegion, 1); ptr = vdev->regions[i]; - reg_info.index = i; - ret = ioctl(vbasedev->fd, VFIO_DEVICE_GET_REGION_INFO, ®_info); + ret = vfio_get_region_info(vbasedev, i, ®_info); if (ret) { error_report("vfio: Error getting region %d info: %m", i); goto reg_error; } - ptr->flags = reg_info.flags; - ptr->size = reg_info.size; - ptr->fd_offset = reg_info.offset; + ptr->flags = reg_info->flags; + ptr->size = reg_info->size; + ptr->fd_offset = reg_info->offset; ptr->nr = i; ptr->vbasedev = vbasedev; + g_free(reg_info); + trace_vfio_platform_populate_regions(ptr->nr, (unsigned long)ptr->flags, (unsigned long)ptr->size, diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index 7e00ffc..371383c 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -25,6 +25,7 @@ #include "exec/memory.h" #include "qemu/queue.h" #include "qemu/notify.h" +#include /*#define DEBUG_VFIO*/ #ifdef DEBUG_VFIO @@ -134,6 +135,8 @@ VFIOGroup *vfio_get_group(int groupid, AddressSpace *as); void vfio_put_group(VFIOGroup *group); int vfio_get_device(VFIOGroup *group, const char *name, VFIODevice *vbasedev); +int vfio_get_region_info(VFIODevice *vbasedev, int index, + struct vfio_region_info **info); extern const MemoryRegionOps vfio_region_ops; extern QLIST_HEAD(vfio_group_head, VFIOGroup) vfio_group_list;