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Thu, 15 Apr 2010 13:09:19 +0900 (JST) Message-ID: <4BC69169.1050105@jp.fujitsu.com> Date: Thu, 15 Apr 2010 13:09:13 +0900 From: Hidetoshi Seto User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; ja; rv:1.9.1.9) Gecko/20100317 Thunderbird/3.0.4 MIME-Version: 1.0 To: linux-pci@vger.kernel.org CC: Jesse Barnes , Kenji Kaneshige Subject: [PATCH 02/18] aerdrv: RsvdP of PCI_ERR_ROOT_COMMAND References: <4BC690E8.307@jp.fujitsu.com> In-Reply-To: <4BC690E8.307@jp.fujitsu.com> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Thu, 15 Apr 2010 04:09:52 +0000 (UTC) diff --git a/drivers/pci/pcie/aer/aerdrv.c b/drivers/pci/pcie/aer/aerdrv.c index 7a711ee..4e845ab 100644 --- a/drivers/pci/pcie/aer/aerdrv.c +++ b/drivers/pci/pcie/aer/aerdrv.c @@ -234,13 +234,15 @@ static int __devinit aer_probe(struct pcie_device *dev) static pci_ers_result_t aer_root_reset(struct pci_dev *dev) { u16 p2p_ctrl; - u32 status; + u32 reg32; int pos; pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR); /* Disable Root's interrupt in response to error messages */ - pci_write_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, 0); + pci_read_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, ®32); + reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK; + pci_write_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, reg32); /* Assert Secondary Bus Reset */ pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &p2p_ctrl); @@ -265,12 +267,14 @@ static pci_ers_result_t aer_root_reset(struct pci_dev *dev) msleep(200); dev_printk(KERN_DEBUG, &dev->dev, "Root Port link has been reset\n"); + /* Clear Root Error Status */ + pci_read_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, ®32); + pci_write_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, reg32); + /* Enable Root Port's interrupt in response to error messages */ - pci_read_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, &status); - pci_write_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, status); - pci_write_config_dword(dev, - pos + PCI_ERR_ROOT_COMMAND, - ROOT_PORT_INTR_ON_MESG_MASK); + pci_read_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, ®32); + reg32 |= ROOT_PORT_INTR_ON_MESG_MASK; + pci_write_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, reg32); return PCI_ERS_RESULT_RECOVERED; } diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c index aceb04b..9754a09 100644 --- a/drivers/pci/pcie/aer/aerdrv_core.c +++ b/drivers/pci/pcie/aer/aerdrv_core.c @@ -623,9 +623,9 @@ void aer_enable_rootport(struct aer_rpc *rpc) set_downstream_devices_error_reporting(pdev, true); /* Enable Root Port's interrupt in response to error messages */ - pci_write_config_dword(pdev, - aer_pos + PCI_ERR_ROOT_COMMAND, - ROOT_PORT_INTR_ON_MESG_MASK); + pci_read_config_dword(pdev, aer_pos + PCI_ERR_ROOT_COMMAND, ®32); + reg32 |= ROOT_PORT_INTR_ON_MESG_MASK; + pci_write_config_dword(pdev, aer_pos + PCI_ERR_ROOT_COMMAND, reg32); } /** @@ -648,7 +648,9 @@ static void disable_root_aer(struct aer_rpc *rpc) pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR); /* Disable Root's interrupt in response to error messages */ - pci_write_config_dword(pdev, pos + PCI_ERR_ROOT_COMMAND, 0); + pci_read_config_dword(pdev, pos + PCI_ERR_ROOT_COMMAND, ®32); + reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK; + pci_write_config_dword(pdev, pos + PCI_ERR_ROOT_COMMAND, reg32); /* Clear Root's error status reg */ pci_read_config_dword(pdev, pos + PCI_ERR_ROOT_STATUS, ®32);