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diff --git a/arch/ppc64/kernel/iSeries_VpdInfo.c b/arch/ppc64/kernel/iSeries_VpdInfo.c
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+/************************************************************************/
+/* File iSeries_vpdInfo.c created by Allan Trautman on Fri Feb 2 2001. */
+/************************************************************************/
+/* This code gets the card location of the hardware */
+/* Copyright (C) 20yy <Allan H Trautman> <IBM Corp> */
+/* */
+/* This program is free software; you can redistribute it and/or modify */
+/* it under the terms of the GNU General Public License as published by */
+/* the Free Software Foundation; either version 2 of the License, or */
+/* (at your option) any later version. */
+/* */
+/* This program is distributed in the hope that it will be useful, */
+/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
+/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
+/* GNU General Public License for more details. */
+/* */
+/* You should have received a copy of the GNU General Public License */
+/* along with this program; if not, write to the: */
+/* Free Software Foundation, Inc., */
+/* 59 Temple Place, Suite 330, */
+/* Boston, MA 02111-1307 USA */
+/************************************************************************/
+/* Change Activity: */
+/* Created, Feb 2, 2001 */
+/* Ported to ppc64, August 20, 2001 */
+/* End Change Activity */
+/************************************************************************/
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <asm/types.h>
+#include <asm/resource.h>
+
+#include <asm/iSeries/HvCallPci.h>
+#include <asm/iSeries/HvTypes.h>
+#include <asm/iSeries/mf.h>
+#include <asm/iSeries/LparData.h>
+#include <asm/iSeries/iSeries_pci.h>
+#include "pci.h"
+
+/*
+ * Size of Bus VPD data
+ */
+#define BUS_VPDSIZE 1024
+/*
+ * Bus Vpd Tags
+ */
+#define VpdEndOfDataTag 0x78
+#define VpdEndOfAreaTag 0x79
+#define VpdIdStringTag 0x82
+#define VpdVendorAreaTag 0x84
+/*
+ * Mfg Area Tags
+ */
+#define VpdFruFlag 0x4647 // "FG"
+#define VpdFruFrameId 0x4649 // "FI"
+#define VpdSlotMapFormat 0x4D46 // "MF"
+#define VpdAsmPartNumber 0x504E // "PN"
+#define VpdFruSerial 0x534E // "SN"
+#define VpdSlotMap 0x534D // "SM"
+
+/*
+ * Structures of the areas
+ */
+struct MfgVpdAreaStruct {
+ u16 Tag;
+ u8 TagLength;
+ u8 AreaData1;
+ u8 AreaData2;
+};
+typedef struct MfgVpdAreaStruct MfgArea;
+#define MFG_ENTRY_SIZE 3
+
+struct SlotMapStruct {
+ u8 AgentId;
+ u8 SecondaryAgentId;
+ u8 PhbId;
+ char CardLocation[3];
+ char Parms[8];
+ char Reserved[2];
+};
+typedef struct SlotMapStruct SlotMap;
+#define SLOT_ENTRY_SIZE 16
+
+/*
+ * Formats the device information.
+ * - Pass in pci_dev* pointer to the device.
+ * - Pass in buffer to place the data. Danger here is the buffer must
+ * be as big as the client says it is. Should be at least 128 bytes.
+ * Return will the length of the string data put in the buffer.
+ * Format:
+ * PCI: Bus 0, Device 26, Vendor 0x12AE Frame 1, Card C10 Ethernet
+ * controller
+ */
+int iSeries_Device_Information(struct pci_dev *PciDev, char *buffer,
+ int BufferSize)
+{
+ struct iSeries_Device_Node *DevNode =
+ (struct iSeries_Device_Node *)PciDev->sysdata;
+ int len;
+
+ if (DevNode == NULL)
+ return sprintf(buffer,
+ "PCI: iSeries_Device_Information DevNode is NULL");
+
+ if (BufferSize < 128)
+ return 0;
+
+ len = sprintf(buffer, "PCI: Bus%3d, Device%3d, Vendor %04X ",
+ ISERIES_BUS(DevNode), PCI_SLOT(PciDev->devfn),
+ PciDev->vendor);
+ len += sprintf(buffer + len, "Frame%3d, Card %4s ",
+ DevNode->FrameId, DevNode->CardLocation);
+#ifdef CONFIG_PCI
+ if (pci_class_name(PciDev->class >> 8) == 0)
+ len += sprintf(buffer + len, "0x%04X ",
+ (int)(PciDev->class >> 8));
+ else
+ len += sprintf(buffer + len, "%s",
+ pci_class_name(PciDev->class >> 8));
+#endif
+ return len;
+}
+
+/*
+ * Parse the Slot Area
+ */
+void iSeries_Parse_SlotArea(SlotMap *MapPtr, int MapLen,
+ struct iSeries_Device_Node *DevNode)
+{
+ int SlotMapLen = MapLen;
+ SlotMap *SlotMapPtr = MapPtr;
+
+ /*
+ * Parse Slot label until we find the one requrested
+ */
+ while (SlotMapLen > 0) {
+ if (SlotMapPtr->AgentId == DevNode->AgentId ) {
+ /*
+ * If Phb wasn't found, grab the entry first one found.
+ */
+ if (DevNode->PhbId == 0xff)
+ DevNode->PhbId = SlotMapPtr->PhbId;
+ /* Found it, extract the data. */
+ if (SlotMapPtr->PhbId == DevNode->PhbId ) {
+ memcpy(&DevNode->CardLocation,
+ &SlotMapPtr->CardLocation, 3);
+ DevNode->CardLocation[3] = 0;
+ break;
+ }
+ }
+ /* Point to the next Slot */
+ SlotMapPtr = (SlotMap *)((char *)SlotMapPtr + SLOT_ENTRY_SIZE);
+ SlotMapLen -= SLOT_ENTRY_SIZE;
+ }
+}
+
+/*
+ * Parse the Mfg Area
+ */
+static void iSeries_Parse_MfgArea(u8 *AreaData, int AreaLen,
+ struct iSeries_Device_Node *DevNode)
+{
+ MfgArea *MfgAreaPtr = (MfgArea *)AreaData;
+ int MfgAreaLen = AreaLen;
+ u16 SlotMapFmt = 0;
+
+ /* Parse Mfg Data */
+ while (MfgAreaLen > 0) {
+ int MfgTagLen = MfgAreaPtr->TagLength;
+ /* Frame ID (FI 4649020310 ) */
+ if (MfgAreaPtr->Tag == VpdFruFrameId) /* FI */
+ DevNode->FrameId = MfgAreaPtr->AreaData1;
+ /* Slot Map Format (MF 4D46020004 ) */
+ else if (MfgAreaPtr->Tag == VpdSlotMapFormat) /* MF */
+ SlotMapFmt = (MfgAreaPtr->AreaData1 * 256)
+ + MfgAreaPtr->AreaData2;
+ /* Slot Map (SM 534D90 */
+ else if (MfgAreaPtr->Tag == VpdSlotMap) { /* SM */
+ SlotMap *SlotMapPtr;
+
+ if (SlotMapFmt == 0x1004)
+ SlotMapPtr = (SlotMap *)((char *)MfgAreaPtr
+ + MFG_ENTRY_SIZE + 1);
+ else
+ SlotMapPtr = (SlotMap *)((char *)MfgAreaPtr
+ + MFG_ENTRY_SIZE);
+ iSeries_Parse_SlotArea(SlotMapPtr, MfgTagLen, DevNode);
+ }
+ /*
+ * Point to the next Mfg Area
+ * Use defined size, sizeof give wrong answer
+ */
+ MfgAreaPtr = (MfgArea *)((char *)MfgAreaPtr + MfgTagLen
+ + MFG_ENTRY_SIZE);
+ MfgAreaLen -= (MfgTagLen + MFG_ENTRY_SIZE);
+ }
+}
+
+/*
+ * Look for "BUS".. Data is not Null terminated.
+ * PHBID of 0xFF indicates PHB was not found in VPD Data.
+ */
+static int iSeries_Parse_PhbId(u8 *AreaPtr, int AreaLength)
+{
+ u8 *PhbPtr = AreaPtr;
+ int DataLen = AreaLength;
+ char PhbId = 0xFF;
+
+ while (DataLen > 0) {
+ if ((*PhbPtr == 'B') && (*(PhbPtr + 1) == 'U')
+ && (*(PhbPtr + 2) == 'S')) {
+ PhbPtr += 3;
+ while (*PhbPtr == ' ')
+ ++PhbPtr;
+ PhbId = (*PhbPtr & 0x0F);
+ break;
+ }
+ ++PhbPtr;
+ --DataLen;
+ }
+ return PhbId;
+}
+
+/*
+ * Parse out the VPD Areas
+ */
+static void iSeries_Parse_Vpd(u8 *VpdData, int VpdDataLen,
+ struct iSeries_Device_Node *DevNode)
+{
+ u8 *TagPtr = VpdData;
+ int DataLen = VpdDataLen - 3;
+
+ while ((*TagPtr != VpdEndOfAreaTag) && (DataLen > 0)) {
+ int AreaLen = *(TagPtr + 1) + (*(TagPtr + 2) * 256);
+ u8 *AreaData = TagPtr + 3;
+
+ if (*TagPtr == VpdIdStringTag)
+ DevNode->PhbId = iSeries_Parse_PhbId(AreaData, AreaLen);
+ else if (*TagPtr == VpdVendorAreaTag)
+ iSeries_Parse_MfgArea(AreaData, AreaLen, DevNode);
+ /* Point to next Area. */
+ TagPtr = AreaData + AreaLen;
+ DataLen -= AreaLen;
+ }
+}
+
+void iSeries_Get_Location_Code(struct iSeries_Device_Node *DevNode)
+{
+ int BusVpdLen = 0;
+ u8 *BusVpdPtr = (u8 *)kmalloc(BUS_VPDSIZE, GFP_KERNEL);
+
+ if (BusVpdPtr == NULL) {
+ printk("PCI: Bus VPD Buffer allocation failure.\n");
+ return;
+ }
+ BusVpdLen = HvCallPci_getBusVpd(ISERIES_BUS(DevNode),
+ ISERIES_HV_ADDR(BusVpdPtr),
+ BUS_VPDSIZE);
+ if (BusVpdLen == 0) {
+ kfree(BusVpdPtr);
+ printk("PCI: Bus VPD Buffer zero length.\n");
+ return;
+ }
+ /* printk("PCI: BusVpdPtr: %p, %d\n",BusVpdPtr, BusVpdLen); */
+ /* Make sure this is what I think it is */
+ if (*BusVpdPtr != VpdIdStringTag) { /* 0x82 */
+ printk("PCI: Bus VPD Buffer missing starting tag.\n");
+ kfree(BusVpdPtr);
+ return;
+ }
+ iSeries_Parse_Vpd(BusVpdPtr,BusVpdLen, DevNode);
+ sprintf(DevNode->Location, "Frame%3d, Card %-4s", DevNode->FrameId,
+ DevNode->CardLocation);
+ kfree(BusVpdPtr);
+}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.