From patchwork Thu Jan 21 17:01:29 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Stabellini X-Patchwork-Id: 571261 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 3D6F41402D9 for ; Fri, 22 Jan 2016 04:04:37 +1100 (AEDT) Received: from localhost ([::1]:48950 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aMIex-0000LC-36 for incoming@patchwork.ozlabs.org; Thu, 21 Jan 2016 12:04:35 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47361) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aMIck-0004Fc-ST for qemu-devel@nongnu.org; Thu, 21 Jan 2016 12:02:20 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aMIce-0001j8-E2 for qemu-devel@nongnu.org; Thu, 21 Jan 2016 12:02:18 -0500 Received: from smtp.citrix.com ([66.165.176.89]:47753) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aMIce-0001ij-60 for qemu-devel@nongnu.org; Thu, 21 Jan 2016 12:02:12 -0500 X-IronPort-AV: E=Sophos;i="5.22,326,1449532800"; d="scan'208";a="326849511" From: Stefano Stabellini To: Date: Thu, 21 Jan 2016 17:01:29 +0000 Message-ID: <1453395690-32660-10-git-send-email-stefano.stabellini@eu.citrix.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: MIME-Version: 1.0 X-DLP: MIA2 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 66.165.176.89 Cc: Cao jin , xen-devel@lists.xensource.com, qemu-devel@nongnu.org, Stefano Stabellini Subject: [Qemu-devel] [PULL 10/11] Add Error **errp for xen_pt_config_init() 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 From: Cao jin To catch the error message. Also modify the caller Signed-off-by: Cao jin Reviewed-by: Eric Blake Reviewed-by: Stefano Stabellini --- hw/xen/xen_pt.c | 8 ++++--- hw/xen/xen_pt.h | 2 +- hw/xen/xen_pt_config_init.c | 51 +++++++++++++++++++++++-------------------- 3 files changed, 33 insertions(+), 28 deletions(-) diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c index 07bfcec..9eef3df 100644 --- a/hw/xen/xen_pt.c +++ b/hw/xen/xen_pt.c @@ -825,9 +825,11 @@ static int xen_pt_initfn(PCIDevice *d) xen_pt_register_regions(s, &cmd); /* reinitialize each config register to be emulated */ - rc = xen_pt_config_init(s); - if (rc) { - XEN_PT_ERR(d, "PCI Config space initialisation failed.\n"); + xen_pt_config_init(s, &err); + if (err) { + error_append_hint(&err, "PCI Config space initialisation failed"); + error_report_err(err); + rc = -1; goto err_out; } diff --git a/hw/xen/xen_pt.h b/hw/xen/xen_pt.h index 26f74f8..c2f8e1f 100644 --- a/hw/xen/xen_pt.h +++ b/hw/xen/xen_pt.h @@ -230,7 +230,7 @@ struct XenPCIPassthroughState { bool listener_set; }; -int xen_pt_config_init(XenPCIPassthroughState *s); +void xen_pt_config_init(XenPCIPassthroughState *s, Error **errp); void xen_pt_config_delete(XenPCIPassthroughState *s); XenPTRegGroup *xen_pt_find_reg_grp(XenPCIPassthroughState *s, uint32_t address); XenPTReg *xen_pt_find_reg(XenPTRegGroup *reg_grp, uint32_t address); diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c index 185a698..81c6721 100644 --- a/hw/xen/xen_pt_config_init.c +++ b/hw/xen/xen_pt_config_init.c @@ -1887,8 +1887,9 @@ static uint8_t find_cap_offset(XenPCIPassthroughState *s, uint8_t cap) return 0; } -static int xen_pt_config_reg_init(XenPCIPassthroughState *s, - XenPTRegGroup *reg_grp, XenPTRegInfo *reg) +static void xen_pt_config_reg_init(XenPCIPassthroughState *s, + XenPTRegGroup *reg_grp, XenPTRegInfo *reg, + Error **errp) { XenPTReg *reg_entry; uint32_t data = 0; @@ -1907,12 +1908,13 @@ static int xen_pt_config_reg_init(XenPCIPassthroughState *s, reg_grp->base_offset + reg->offset, &data); if (rc < 0) { g_free(reg_entry); - return rc; + error_setg(errp, "Init emulate register fail"); + return; } if (data == XEN_PT_INVALID_REG) { /* free unused BAR register entry */ g_free(reg_entry); - return 0; + return; } /* Sync up the data to dev.config */ offset = reg_grp->base_offset + reg->offset; @@ -1930,7 +1932,8 @@ static int xen_pt_config_reg_init(XenPCIPassthroughState *s, if (rc) { /* Serious issues when we cannot read the host values! */ g_free(reg_entry); - return rc; + error_setg(errp, "Cannot read host values"); + return; } /* Set bits in emu_mask are the ones we emulate. The dev.config shall * contain the emulated view of the guest - therefore we flip the mask @@ -1955,10 +1958,10 @@ static int xen_pt_config_reg_init(XenPCIPassthroughState *s, val = data; if (val & ~size_mask) { - XEN_PT_ERR(&s->dev,"Offset 0x%04x:0x%04x expands past register size(%d)!\n", - offset, val, reg->size); + error_setg(errp, "Offset 0x%04x:0x%04x expands past" + " register size (%d)", offset, val, reg->size); g_free(reg_entry); - return -ENXIO; + return; } /* This could be just pci_set_long as we don't modify the bits * past reg->size, but in case this routine is run in parallel or the @@ -1978,13 +1981,12 @@ static int xen_pt_config_reg_init(XenPCIPassthroughState *s, } /* list add register entry */ QLIST_INSERT_HEAD(®_grp->reg_tbl_list, reg_entry, entries); - - return 0; } -int xen_pt_config_init(XenPCIPassthroughState *s) +void xen_pt_config_init(XenPCIPassthroughState *s, Error **errp) { int i, rc; + Error *err = NULL; QLIST_INIT(&s->reg_grps); @@ -2027,11 +2029,12 @@ int xen_pt_config_init(XenPCIPassthroughState *s) reg_grp_offset, ®_grp_entry->size); if (rc < 0) { - XEN_PT_LOG(&s->dev, "Failed to initialize %d/%ld, type=0x%x, rc:%d\n", - i, ARRAY_SIZE(xen_pt_emu_reg_grps), + error_setg(&err, "Failed to initialize %d/%zu, type = 0x%x," + " rc: %d", i, ARRAY_SIZE(xen_pt_emu_reg_grps), xen_pt_emu_reg_grps[i].grp_type, rc); + error_propagate(errp, err); xen_pt_config_delete(s); - return rc; + return; } } @@ -2039,24 +2042,24 @@ int xen_pt_config_init(XenPCIPassthroughState *s) if (xen_pt_emu_reg_grps[i].emu_regs) { int j = 0; XenPTRegInfo *regs = xen_pt_emu_reg_grps[i].emu_regs; + /* initialize capability register */ for (j = 0; regs->size != 0; j++, regs++) { - /* initialize capability register */ - rc = xen_pt_config_reg_init(s, reg_grp_entry, regs); - if (rc < 0) { - XEN_PT_LOG(&s->dev, "Failed to initialize %d/%ld reg 0x%x in grp_type=0x%x (%d/%ld), rc=%d\n", - j, ARRAY_SIZE(xen_pt_emu_reg_grps[i].emu_regs), - regs->offset, xen_pt_emu_reg_grps[i].grp_type, - i, ARRAY_SIZE(xen_pt_emu_reg_grps), rc); + xen_pt_config_reg_init(s, reg_grp_entry, regs, &err); + if (err) { + error_append_hint(&err, "Failed to initialize %d/%zu" + " reg 0x%x in grp_type = 0x%x (%d/%zu)", + j, ARRAY_SIZE(xen_pt_emu_reg_grps[i].emu_regs), + regs->offset, xen_pt_emu_reg_grps[i].grp_type, + i, ARRAY_SIZE(xen_pt_emu_reg_grps)); + error_propagate(errp, err); xen_pt_config_delete(s); - return rc; + return; } } } } } - - return 0; } /* delete all emulate register */