Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756214Ab1DTUbi (ORCPT ); Wed, 20 Apr 2011 16:31:38 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56468 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756192Ab1DTUbg (ORCPT ); Wed, 20 Apr 2011 16:31:36 -0400 From: Alex Williamson Subject: [PATCH v3 1/3] PCI: Track the size of each saved capability data area To: linux-pci@vger.kernel.org, kvm@vger.kernel.org, avi@redhat.com Cc: linux-kernel@vger.kernel.org, alex.williamson@redhat.com, jan.kiszka@siemens.com, jbarnes@virtuousgeek.org Date: Wed, 20 Apr 2011 14:31:33 -0600 Message-ID: <20110420203133.3189.22786.stgit@s20.home> In-Reply-To: <20110420202523.3189.31306.stgit@s20.home> References: <20110420202523.3189.31306.stgit@s20.home> User-Agent: StGIT/0.14.3 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2834 Lines: 99 This will allow us to store and load it later. Signed-off-by: Alex Williamson --- drivers/pci/pci.c | 12 +++++++----- include/linux/pci.h | 11 ++++++++--- 2 files changed, 15 insertions(+), 8 deletions(-) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 2472e71..d2500a0 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -830,7 +830,7 @@ static int pci_save_pcie_state(struct pci_dev *dev) dev_err(&dev->dev, "buffer not found in %s\n", __func__); return -ENOMEM; } - cap = (u16 *)&save_state->data[0]; + cap = (u16 *)&save_state->saved.data[0]; pci_read_config_word(dev, pos + PCI_EXP_FLAGS, &flags); @@ -863,7 +863,7 @@ static void pci_restore_pcie_state(struct pci_dev *dev) pos = pci_find_capability(dev, PCI_CAP_ID_EXP); if (!save_state || pos <= 0) return; - cap = (u16 *)&save_state->data[0]; + cap = (u16 *)&save_state->saved.data[0]; pci_read_config_word(dev, pos + PCI_EXP_FLAGS, &flags); @@ -899,7 +899,8 @@ static int pci_save_pcix_state(struct pci_dev *dev) return -ENOMEM; } - pci_read_config_word(dev, pos + PCI_X_CMD, (u16 *)save_state->data); + pci_read_config_word(dev, pos + PCI_X_CMD, + (u16 *)save_state->saved.data); return 0; } @@ -914,7 +915,7 @@ static void pci_restore_pcix_state(struct pci_dev *dev) pos = pci_find_capability(dev, PCI_CAP_ID_PCIX); if (!save_state || pos <= 0) return; - cap = (u16 *)&save_state->data[0]; + cap = (u16 *)&save_state->saved.data[0]; pci_write_config_word(dev, pos + PCI_X_CMD, cap[i++]); } @@ -1771,7 +1772,8 @@ static int pci_add_cap_save_buffer( if (!save_state) return -ENOMEM; - save_state->cap_nr = cap; + save_state->saved.cap_nr = cap; + save_state->saved.size = size; pci_add_saved_cap(dev, save_state); return 0; diff --git a/include/linux/pci.h b/include/linux/pci.h index 96f70d7..46fd382 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -214,12 +214,17 @@ enum pci_bus_speed { PCI_SPEED_UNKNOWN = 0xff, }; -struct pci_cap_saved_state { - struct hlist_node next; +struct pci_cap_saved { char cap_nr; + unsigned int size; u32 data[0]; }; +struct pci_cap_saved_state { + struct hlist_node next; + struct pci_cap_saved saved; +}; + struct pcie_link_state; struct pci_vpd; struct pci_sriov; @@ -366,7 +371,7 @@ static inline struct pci_cap_saved_state *pci_find_saved_cap( struct hlist_node *pos; hlist_for_each_entry(tmp, pos, &pci_dev->saved_cap_space, next) { - if (tmp->cap_nr == cap) + if (tmp->saved.cap_nr == cap) return tmp; } return NULL; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/