From b771a40f9eecbffee70a7425e5a96feb58f85d99 Mon Sep 17 00:00:00 2001 From: Zhenzhong Duan Date: Wed, 22 May 2024 12:40:08 +0800 Subject: [PATCH] vfio/pci: Make capability related functions return bool MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The functions operating on capability don't have a consistent return style. Below functions are in bool-valued functions style: vfio_msi_setup() vfio_msix_setup() vfio_add_std_cap() vfio_add_capabilities() Below two are integer-valued functions: vfio_add_vendor_specific_cap() vfio_setup_pcie_cap() But the returned integer is only used for check succeed/failure. Change them all to return bool so now all capability related functions follow the coding standand in qapi/error.h to return bool. Signed-off-by: Zhenzhong Duan Reviewed-by: Cédric Le Goater Signed-off-by: Cédric Le Goater --- hw/vfio/pci.c | 77 ++++++++++++++++++++++++++++------------------------------- 1 file changed, 36 insertions(+), 41 deletions(-) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index ab8f74299e..c3323912dd 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -1339,7 +1339,7 @@ static void vfio_disable_interrupts(VFIOPCIDevice *vdev) } } -static int vfio_msi_setup(VFIOPCIDevice *vdev, int pos, Error **errp) +static bool vfio_msi_setup(VFIOPCIDevice *vdev, int pos, Error **errp) { uint16_t ctrl; bool msi_64bit, msi_maskbit; @@ -1349,7 +1349,7 @@ static int vfio_msi_setup(VFIOPCIDevice *vdev, int pos, Error **errp) if (pread(vdev->vbasedev.fd, &ctrl, sizeof(ctrl), vdev->config_offset + pos + PCI_CAP_FLAGS) != sizeof(ctrl)) { error_setg_errno(errp, errno, "failed reading MSI PCI_CAP_FLAGS"); - return -errno; + return false; } ctrl = le16_to_cpu(ctrl); @@ -1362,14 +1362,14 @@ static int vfio_msi_setup(VFIOPCIDevice *vdev, int pos, Error **errp) ret = msi_init(&vdev->pdev, pos, entries, msi_64bit, msi_maskbit, &err); if (ret < 0) { if (ret == -ENOTSUP) { - return 0; + return true; } error_propagate_prepend(errp, err, "msi_init failed: "); - return ret; + return false; } vdev->msi_cap_size = 0xa + (msi_maskbit ? 0xa : 0) + (msi_64bit ? 0x4 : 0); - return 0; + return true; } static void vfio_pci_fixup_msix_region(VFIOPCIDevice *vdev) @@ -1644,7 +1644,7 @@ static bool vfio_msix_early_setup(VFIOPCIDevice *vdev, Error **errp) return vfio_pci_relocate_msix(vdev, errp); } -static int vfio_msix_setup(VFIOPCIDevice *vdev, int pos, Error **errp) +static bool vfio_msix_setup(VFIOPCIDevice *vdev, int pos, Error **errp) { int ret; Error *err = NULL; @@ -1660,11 +1660,11 @@ static int vfio_msix_setup(VFIOPCIDevice *vdev, int pos, Error **errp) if (ret < 0) { if (ret == -ENOTSUP) { warn_report_err(err); - return 0; + return true; } error_propagate(errp, err); - return ret; + return false; } /* @@ -1698,7 +1698,7 @@ static int vfio_msix_setup(VFIOPCIDevice *vdev, int pos, Error **errp) memory_region_set_enabled(&vdev->pdev.msix_table_mmio, false); } - return 0; + return true; } static void vfio_teardown_msi(VFIOPCIDevice *vdev) @@ -1977,8 +1977,8 @@ static void vfio_pci_disable_rp_atomics(VFIOPCIDevice *vdev) } } -static int vfio_setup_pcie_cap(VFIOPCIDevice *vdev, int pos, uint8_t size, - Error **errp) +static bool vfio_setup_pcie_cap(VFIOPCIDevice *vdev, int pos, uint8_t size, + Error **errp) { uint16_t flags; uint8_t type; @@ -1992,7 +1992,7 @@ static int vfio_setup_pcie_cap(VFIOPCIDevice *vdev, int pos, uint8_t size, error_setg(errp, "assignment of PCIe type 0x%x " "devices is not currently supported", type); - return -EINVAL; + return false; } if (!pci_bus_is_express(pci_get_bus(&vdev->pdev))) { @@ -2025,7 +2025,7 @@ static int vfio_setup_pcie_cap(VFIOPCIDevice *vdev, int pos, uint8_t size, } if (pci_bus_is_express(bus)) { - return 0; + return true; } } else if (pci_bus_is_root(pci_get_bus(&vdev->pdev))) { @@ -2063,7 +2063,7 @@ static int vfio_setup_pcie_cap(VFIOPCIDevice *vdev, int pos, uint8_t size, * Legacy endpoints don't belong on the root complex. Windows * seems to be happier with devices if we skip the capability. */ - return 0; + return true; } } else { @@ -2099,12 +2099,12 @@ static int vfio_setup_pcie_cap(VFIOPCIDevice *vdev, int pos, uint8_t size, pos = pci_add_capability(&vdev->pdev, PCI_CAP_ID_EXP, pos, size, errp); if (pos < 0) { - return pos; + return false; } vdev->pdev.exp.exp_cap = pos; - return pos; + return true; } static void vfio_check_pcie_flr(VFIOPCIDevice *vdev, uint8_t pos) @@ -2137,14 +2137,14 @@ static void vfio_check_af_flr(VFIOPCIDevice *vdev, uint8_t pos) } } -static int vfio_add_vendor_specific_cap(VFIOPCIDevice *vdev, int pos, - uint8_t size, Error **errp) +static bool vfio_add_vendor_specific_cap(VFIOPCIDevice *vdev, int pos, + uint8_t size, Error **errp) { PCIDevice *pdev = &vdev->pdev; pos = pci_add_capability(pdev, PCI_CAP_ID_VNDR, pos, size, errp); if (pos < 0) { - return pos; + return false; } /* @@ -2156,15 +2156,15 @@ static int vfio_add_vendor_specific_cap(VFIOPCIDevice *vdev, int pos, memset(pdev->cmask + pos + 3, 0, size - 3); } - return pos; + return true; } -static int vfio_add_std_cap(VFIOPCIDevice *vdev, uint8_t pos, Error **errp) +static bool vfio_add_std_cap(VFIOPCIDevice *vdev, uint8_t pos, Error **errp) { ERRP_GUARD(); PCIDevice *pdev = &vdev->pdev; uint8_t cap_id, next, size; - int ret; + bool ret; cap_id = pdev->config[pos]; next = pdev->config[pos + PCI_CAP_LIST_NEXT]; @@ -2185,9 +2185,8 @@ static int vfio_add_std_cap(VFIOPCIDevice *vdev, uint8_t pos, Error **errp) * will be changed as we unwind the stack. */ if (next) { - ret = vfio_add_std_cap(vdev, next, errp); - if (ret) { - return ret; + if (!vfio_add_std_cap(vdev, next, errp)) { + return false; } } else { /* Begin the rebuild, use QEMU emulated list bits */ @@ -2197,7 +2196,7 @@ static int vfio_add_std_cap(VFIOPCIDevice *vdev, uint8_t pos, Error **errp) ret = vfio_add_virt_caps(vdev, errp); if (ret) { - return ret; + return false; } } @@ -2221,28 +2220,27 @@ static int vfio_add_std_cap(VFIOPCIDevice *vdev, uint8_t pos, Error **errp) case PCI_CAP_ID_PM: vfio_check_pm_reset(vdev, pos); vdev->pm_cap = pos; - ret = pci_add_capability(pdev, cap_id, pos, size, errp); + ret = pci_add_capability(pdev, cap_id, pos, size, errp) >= 0; break; case PCI_CAP_ID_AF: vfio_check_af_flr(vdev, pos); - ret = pci_add_capability(pdev, cap_id, pos, size, errp); + ret = pci_add_capability(pdev, cap_id, pos, size, errp) >= 0; break; case PCI_CAP_ID_VNDR: ret = vfio_add_vendor_specific_cap(vdev, pos, size, errp); break; default: - ret = pci_add_capability(pdev, cap_id, pos, size, errp); + ret = pci_add_capability(pdev, cap_id, pos, size, errp) >= 0; break; } - if (ret < 0) { + if (!ret) { error_prepend(errp, "failed to add PCI capability 0x%x[0x%x]@0x%x: ", cap_id, size, pos); - return ret; } - return 0; + return ret; } static int vfio_setup_rebar_ecap(VFIOPCIDevice *vdev, uint16_t pos) @@ -2388,23 +2386,21 @@ static void vfio_add_ext_cap(VFIOPCIDevice *vdev) return; } -static int vfio_add_capabilities(VFIOPCIDevice *vdev, Error **errp) +static bool vfio_add_capabilities(VFIOPCIDevice *vdev, Error **errp) { PCIDevice *pdev = &vdev->pdev; - int ret; if (!(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST) || !pdev->config[PCI_CAPABILITY_LIST]) { - return 0; /* Nothing to add */ + return true; /* Nothing to add */ } - ret = vfio_add_std_cap(vdev, pdev->config[PCI_CAPABILITY_LIST], errp); - if (ret) { - return ret; + if (!vfio_add_std_cap(vdev, pdev->config[PCI_CAPABILITY_LIST], errp)) { + return false; } vfio_add_ext_cap(vdev); - return 0; + return true; } void vfio_pci_pre_reset(VFIOPCIDevice *vdev) @@ -3133,8 +3129,7 @@ static void vfio_realize(PCIDevice *pdev, Error **errp) vfio_bars_register(vdev); - ret = vfio_add_capabilities(vdev, errp); - if (ret) { + if (!vfio_add_capabilities(vdev, errp)) { goto out_teardown; } -- 2.11.4.GIT