This patch includes the source code of Root callback-handle component
of PCI Express Advanced Error Reporting driver.
Signed-off-by: T. Long Nguyen <[EMAIL PROTECTED]>
--------------------------------------------------------------------
diff -urpN linux-2.6.11-rc5/drivers/pci/pcie/aer/aerdrv_rpc_handle.c
patch-2.6.11-rc5-aerc3-split4/drivers/pci/pcie/aer/aerdrv_rpc_handle.c
--- linux-2.6.11-rc5/drivers/pci/pcie/aer/aerdrv_rpc_handle.c 1969-12-31
19:00:00.000000000 -0500
+++ patch-2.6.11-rc5-aerc3-split4/drivers/pci/pcie/aer/aerdrv_rpc_handle.c
2005-03-09 13:25:36.000000000 -0500
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2005 Intel
+ * Copyright (C) Tom Long Nguyen ([EMAIL PROTECTED])
+ *
+ */
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+
+#include "aerdrv.h"
+
+static int aer_root_notify(unsigned short requestor_id, union aer_error
*error);
+static int aer_root_get_header(unsigned short requestor_id,
+ union aer_error *error, struct header_log_regs *log);
+
+/* AER callback handle data structure */
+struct pcie_aer_handle aer_root_handle = {
+ .notify = aer_root_notify,
+ .get_header = aer_root_get_header,
+};
+
+/**
+ * aer_root_notify - process an error being notified by AER Root driver
+ * @requestor_id: an identification
+ * @error: pointer to an error data structure
+ *
+ * Invoked when AER Root Port itself generates error messages.
+ **/
+static int aer_root_notify(unsigned short requestor_id, union aer_error *error)
+{
+ struct pci_dev *pdev = get_root_pci_dev(requestor_id);
+ int pos, retval = -EINVAL;
+ u32 status;
+ u16 reg16;
+
+ if (error->type == AER_CORRECTABLE) {
+ pci_read_config_dword(pdev,
+ CORRECTABLE_ERROR_STATUS_REG, &status);
+ if (status & ERR_CORRECTABLE_ERROR_MASK) {
+ pci_write_config_dword(pdev,
+ CORRECTABLE_ERROR_STATUS_REG, status);
+ error->source.type = AER_CORRECTABLE;
+ error->source.status = status;
+ retval = 0;
+ }
+ } else {
+ pci_read_config_dword(pdev,
+ UNCORRECTABLE_ERROR_STATUS_REG, &status);
+ if (status & ERR_UNCORRECTABLE_ERROR_MASK) {
+ u32 severity;
+
+ pci_read_config_dword(pdev,
+ UNCORRECTABLE_ERROR_SEVERITY_REG, &severity);
+ pci_write_config_dword(pdev,
+ UNCORRECTABLE_ERROR_STATUS_REG, status);
+ if (status & severity)
+ error->source.type = AER_FATAL;
+ else
+ error->source.type = AER_NONFATAL;
+ error->source.status = status;
+ retval = 0;
+ }
+ }
+
+ /* Clean up Root device status */
+ pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+ pci_read_config_word(pdev, pos + PCIE_CAP_DEVICE_STATUS_REG_OFF,®16);
+ pci_write_config_word(pdev, pos + PCIE_CAP_DEVICE_STATUS_REG_OFF,reg16);
+
+ return retval;
+}
+
+/**
+ * aer_root_get_header - provide TLP header
+ * @requestor_id: an identification
+ * @error: pointer to a TLP header data structure
+ *
+ * Invoked when AER Root Port logs the header of TLP associated with an error.
+ **/
+static int aer_root_get_header(unsigned short requestor_id,
+ union aer_error *error, struct header_log_regs *log)
+{
+ struct pci_dev *pdev = get_root_pci_dev(requestor_id);
+
+ if (error->type == AER_CORRECTABLE ||
+ !(error->source.status & AER_LOG_TLP_MASKS))
+ return AER_UNSUCCESS;
+
+ pci_read_config_dword(pdev, HEADER_LOG_REG, &log->dw0);
+ pci_read_config_dword(pdev, HEADER_LOG_REG + 4, &log->dw1);
+ pci_read_config_dword(pdev, HEADER_LOG_REG + 8, &log->dw2);
+ pci_read_config_dword(pdev, HEADER_LOG_REG + 12, &log->dw3);
+
+ return AER_SUCCESS;
+}
+
-
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