Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / edac / octeon_edac-pci.c

diff --git a/kernel/drivers/edac/octeon_edac-pci.c b/kernel/drivers/edac/octeon_edac-pci.c
new file mode 100644 (file)
index 0000000..9ca73ce
--- /dev/null
+++ b/kernel/drivers/edac/octeon_edac-pci.c
@@ -0,0 +1,111 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2012 Cavium, Inc.
+ * Copyright (C) 2009 Wind River Systems,
+ *   written by Ralf Baechle <ralf@linux-mips.org>
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/edac.h>
+
+#include <asm/octeon/cvmx.h>
+#include <asm/octeon/cvmx-npi-defs.h>
+#include <asm/octeon/cvmx-pci-defs.h>
+#include <asm/octeon/octeon.h>
+
+#include "edac_core.h"
+#include "edac_module.h"
+
+static void octeon_pci_poll(struct edac_pci_ctl_info *pci)
+{
+       union cvmx_pci_cfg01 cfg01;
+
+       cfg01.u32 = octeon_npi_read32(CVMX_NPI_PCI_CFG01);
+       if (cfg01.s.dpe) {              /* Detected parity error */
+               edac_pci_handle_pe(pci, pci->ctl_name);
+               cfg01.s.dpe = 1;                /* Reset  */
+               octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
+       }
+       if (cfg01.s.sse) {
+               edac_pci_handle_npe(pci, "Signaled System Error");
+               cfg01.s.sse = 1;                /* Reset */
+               octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
+       }
+       if (cfg01.s.rma) {
+               edac_pci_handle_npe(pci, "Received Master Abort");
+               cfg01.s.rma = 1;                /* Reset */
+               octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
+       }
+       if (cfg01.s.rta) {
+               edac_pci_handle_npe(pci, "Received Target Abort");
+               cfg01.s.rta = 1;                /* Reset */
+               octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
+       }
+       if (cfg01.s.sta) {
+               edac_pci_handle_npe(pci, "Signaled Target Abort");
+               cfg01.s.sta = 1;                /* Reset */
+               octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
+       }
+       if (cfg01.s.mdpe) {
+               edac_pci_handle_npe(pci, "Master Data Parity Error");
+               cfg01.s.mdpe = 1;               /* Reset */
+               octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
+       }
+}
+
+static int octeon_pci_probe(struct platform_device *pdev)
+{
+       struct edac_pci_ctl_info *pci;
+       int res = 0;
+
+       pci = edac_pci_alloc_ctl_info(0, "octeon_pci_err");
+       if (!pci)
+               return -ENOMEM;
+
+       pci->dev = &pdev->dev;
+       platform_set_drvdata(pdev, pci);
+       pci->dev_name = dev_name(&pdev->dev);
+
+       pci->mod_name = "octeon-pci";
+       pci->ctl_name = "octeon_pci_err";
+       pci->edac_check = octeon_pci_poll;
+
+       if (edac_pci_add_device(pci, 0) > 0) {
+               pr_err("%s: edac_pci_add_device() failed\n", __func__);
+               goto err;
+       }
+
+       return 0;
+
+err:
+       edac_pci_free_ctl_info(pci);
+
+       return res;
+}
+
+static int octeon_pci_remove(struct platform_device *pdev)
+{
+       struct edac_pci_ctl_info *pci = platform_get_drvdata(pdev);
+
+       edac_pci_del_device(&pdev->dev);
+       edac_pci_free_ctl_info(pci);
+
+       return 0;
+}
+
+static struct platform_driver octeon_pci_driver = {
+       .probe = octeon_pci_probe,
+       .remove = octeon_pci_remove,
+       .driver = {
+                  .name = "octeon_pci_edac",
+       }
+};
+module_platform_driver(octeon_pci_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");