From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:37612) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SSyll-0001qW-Fd for qemu-devel@nongnu.org; Fri, 11 May 2012 18:57:06 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SSyli-0008Bp-AW for qemu-devel@nongnu.org; Fri, 11 May 2012 18:57:05 -0400 Received: from mx1.redhat.com ([209.132.183.28]:17324) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SSyli-0008BK-2v for qemu-devel@nongnu.org; Fri, 11 May 2012 18:57:02 -0400 From: Alex Williamson Date: Fri, 11 May 2012 16:56:44 -0600 Message-ID: <20120511225643.30496.36823.stgit@bling.home> In-Reply-To: <20120511222148.30496.68571.stgit@bling.home> References: <20120511222148.30496.68571.stgit@bling.home> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] [PATCH 11/13] pci: Create common pcibios_err_to_errno List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: benh@kernel.crashing.org, aik@ozlabs.ru, david@gibson.dropbear.id.au, joerg.roedel@amd.com, dwmw2@infradead.org Cc: aafabbri@cisco.com, alex.williamson@redhat.com, kvm@vger.kernel.org, B07421@freescale.com, linux-pci@vger.kernel.org, konrad.wilk@oracle.com, agraf@suse.de, qemu-devel@nongnu.org, chrisw@sous-sol.org, B08248@freescale.com, iommu@lists.linux-foundation.org, avi@redhat.com, gregkh@linuxfoundation.org, bhelgaas@google.com, linux-kernel@vger.kernel.org, benve@cisco.com For returning errors out to non-PCI code. Re-name xen's version. Signed-off-by: Alex Williamson --- drivers/xen/xen-pciback/conf_space.c | 6 +++--- include/linux/pci.h | 26 ++++++++++++++++++++++++++ 2 files changed, 29 insertions(+), 3 deletions(-) diff --git a/drivers/xen/xen-pciback/conf_space.c b/drivers/xen/xen-pciback/conf_space.c index 30d7be0..46ae0f9 100644 --- a/drivers/xen/xen-pciback/conf_space.c +++ b/drivers/xen/xen-pciback/conf_space.c @@ -124,7 +124,7 @@ static inline u32 merge_value(u32 val, u32 new_val, u32 new_val_mask, return val; } -static int pcibios_err_to_errno(int err) +static int xen_pcibios_err_to_errno(int err) { switch (err) { case PCIBIOS_SUCCESSFUL: @@ -202,7 +202,7 @@ out: pci_name(dev), size, offset, value); *ret_val = value; - return pcibios_err_to_errno(err); + return xen_pcibios_err_to_errno(err); } int xen_pcibk_config_write(struct pci_dev *dev, int offset, int size, u32 value) @@ -290,7 +290,7 @@ int xen_pcibk_config_write(struct pci_dev *dev, int offset, int size, u32 value) } } - return pcibios_err_to_errno(err); + return xen_pcibios_err_to_errno(err); } void xen_pcibk_config_free_dyn_fields(struct pci_dev *dev) diff --git a/include/linux/pci.h b/include/linux/pci.h index b437225..20a8f2e 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -467,6 +467,32 @@ static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false; #define PCIBIOS_SET_FAILED 0x88 #define PCIBIOS_BUFFER_TOO_SMALL 0x89 +/* + * Translate above to generic errno for passing back through non-pci. + */ +static inline int pcibios_err_to_errno(int err) +{ + if (err <= PCIBIOS_SUCCESSFUL) + return err; /* Assume already errno */ + + switch (err) { + case PCIBIOS_FUNC_NOT_SUPPORTED: + return -ENOENT; + case PCIBIOS_BAD_VENDOR_ID: + return -EINVAL; + case PCIBIOS_DEVICE_NOT_FOUND: + return -ENODEV; + case PCIBIOS_BAD_REGISTER_NUMBER: + return -EFAULT; + case PCIBIOS_SET_FAILED: + return -EIO; + case PCIBIOS_BUFFER_TOO_SMALL: + return -ENOSPC; + } + + return -ENOTTY; +} + /* Low-level architecture-dependent routines */ struct pci_ops {