From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com ([209.132.183.28]:40778 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728404AbeLJRNg (ORCPT ); Mon, 10 Dec 2018 12:13:36 -0500 From: Vivek Goyal To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: vgoyal@redhat.com, miklos@szeredi.hu, stefanha@redhat.com, dgilbert@redhat.com, sweil@redhat.com, swhiteho@redhat.com Subject: [PATCH 46/52] virtio-fs: Retrieve shm capabilities for version table Date: Mon, 10 Dec 2018 12:13:12 -0500 Message-Id: <20181210171318.16998-47-vgoyal@redhat.com> In-Reply-To: <20181210171318.16998-1-vgoyal@redhat.com> References: <20181210171318.16998-1-vgoyal@redhat.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: From: "Dr. David Alan Gilbert" Retrieve the capabilities needed to find the journal and version table. Signed-off-by: Dr. David Alan Gilbert --- fs/fuse/virtio_fs.c | 26 ++++++++++++++++++++++++-- include/uapi/linux/virtio_fs.h | 2 ++ 2 files changed, 26 insertions(+), 2 deletions(-) diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c index c71bc47395b4..c18f406b61cd 100644 --- a/fs/fuse/virtio_fs.c +++ b/fs/fuse/virtio_fs.c @@ -589,8 +589,11 @@ static int virtio_fs_setup_dax(struct virtio_device *vdev, struct virtio_fs *fs) phys_addr_t phys_addr; size_t bar_len; int ret; - u8 have_cache, cache_bar; - u64 cache_offset, cache_len; + u8 have_cache, have_journal, have_vertab; + u8 cache_bar, journal_bar, vertab_bar; + u64 cache_offset, cache_len; + u64 journal_offset, journal_len; + u64 vertab_offset, vertab_len; if (!IS_ENABLED(CONFIG_DAX_DRIVER)) return 0; @@ -619,6 +622,25 @@ static int virtio_fs_setup_dax(struct virtio_device *vdev, struct virtio_fs *fs) cache_bar, cache_len, cache_offset); } + have_journal = virtio_pci_find_shm_cap(pci_dev, + VIRTIO_FS_PCI_SHMCAP_ID_JOURNAL, + &journal_bar, &journal_offset, + &journal_len); + if (have_journal) { + dev_notice(&vdev->dev, "Journal bar: %d len: 0x%llx @ 0x%llx\n", + journal_bar, journal_len, journal_offset); + } + + have_vertab = virtio_pci_find_shm_cap(pci_dev, + VIRTIO_FS_PCI_SHMCAP_ID_VERTAB, + &vertab_bar, &vertab_offset, + &vertab_len); + if (have_vertab) { + dev_notice(&vdev->dev, "Version table bar: %d len: 0x%llx @ 0x%llx\n", + vertab_bar, vertab_len, vertab_offset); + } + + /* TODO handle case where device doesn't expose BAR? */ ret = pci_request_region(pci_dev, cache_bar, "virtio-fs-window"); if (ret < 0) { diff --git a/include/uapi/linux/virtio_fs.h b/include/uapi/linux/virtio_fs.h index 65a9d4a0dac0..e70741ab14a8 100644 --- a/include/uapi/linux/virtio_fs.h +++ b/include/uapi/linux/virtio_fs.h @@ -40,5 +40,7 @@ struct virtio_fs_config { /* For the id field in virtio_pci_shm_cap */ #define VIRTIO_FS_PCI_SHMCAP_ID_CACHE 0 +#define VIRTIO_FS_PCI_SHMCAP_ID_VERTAB 1 +#define VIRTIO_FS_PCI_SHMCAP_ID_JOURNAL 2 #endif /* _UAPI_LINUX_VIRTIO_FS_H */ -- 2.13.6