2 * File iSeries_vpdInfo.c created by Allan Trautman on Fri Feb 2 2001.
4 * This code gets the card location of the hardware
5 * Copyright (C) 2001 <Allan H Trautman> <IBM Corp>
6 * Copyright (C) 2005 Stephen Rothwel, IBM Corp
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the:
20 * Free Software Foundation, Inc.,
21 * 59 Temple Place, Suite 330,
22 * Boston, MA 02111-1307 USA
25 * Created, Feb 2, 2001
26 * Ported to ppc64, August 20, 2001
29 #include <linux/init.h>
30 #include <linux/module.h>
31 #include <linux/pci.h>
32 #include <asm/types.h>
33 #include <asm/resource.h>
35 #include <asm/iSeries/HvCallPci.h>
36 #include <asm/iSeries/HvTypes.h>
37 #include <asm/iSeries/iSeries_pci.h>
40 * Size of Bus VPD data
42 #define BUS_VPDSIZE 1024
47 #define VpdEndOfDataTag 0x78
48 #define VpdEndOfAreaTag 0x79
49 #define VpdIdStringTag 0x82
50 #define VpdVendorAreaTag 0x84
55 #define VpdFruFlag 0x4647 // "FG"
56 #define VpdFruFrameId 0x4649 // "FI"
57 #define VpdSlotMapFormat 0x4D46 // "MF"
58 #define VpdAsmPartNumber 0x504E // "PN"
59 #define VpdFruSerial 0x534E // "SN"
60 #define VpdSlotMap 0x534D // "SM"
63 * Structures of the areas
65 struct MfgVpdAreaStruct {
71 typedef struct MfgVpdAreaStruct MfgArea;
72 #define MFG_ENTRY_SIZE 3
74 struct SlotMapStruct {
82 typedef struct SlotMapStruct SlotMap;
83 #define SLOT_ENTRY_SIZE 16
86 * Formats the device information.
87 * - Pass in pci_dev* pointer to the device.
88 * - Pass in buffer to place the data. Danger here is the buffer must
89 * be as big as the client says it is. Should be at least 128 bytes.
90 * Return will the length of the string data put in the buffer.
92 * PCI: Bus 0, Device 26, Vendor 0x12AE Frame 1, Card C10 Ethernet
95 int iSeries_Device_Information(struct pci_dev *PciDev, char *buffer,
98 struct iSeries_Device_Node *DevNode =
99 (struct iSeries_Device_Node *)PciDev->sysdata;
103 return sprintf(buffer,
104 "PCI: iSeries_Device_Information DevNode is NULL");
106 if (BufferSize < 128)
109 len = sprintf(buffer, "PCI: Bus%3d, Device%3d, Vendor %04X ",
110 ISERIES_BUS(DevNode), PCI_SLOT(PciDev->devfn),
112 len += sprintf(buffer + len, "Frame%3d, Card %4s ",
113 DevNode->FrameId, DevNode->CardLocation);
114 if (pci_class_name(PciDev->class >> 8) == 0)
115 len += sprintf(buffer + len, "0x%04X ",
116 (int)(PciDev->class >> 8));
118 len += sprintf(buffer + len, "%s",
119 pci_class_name(PciDev->class >> 8));
124 * Parse the Slot Area
126 static void iSeries_Parse_SlotArea(SlotMap *MapPtr, int MapLen,
127 struct iSeries_Device_Node *DevNode)
129 int SlotMapLen = MapLen;
130 SlotMap *SlotMapPtr = MapPtr;
133 * Parse Slot label until we find the one requested
135 while (SlotMapLen > 0) {
136 if (SlotMapPtr->AgentId == DevNode->AgentId ) {
138 * If Phb wasn't found, grab the entry first one found.
140 if (DevNode->PhbId == 0xff)
141 DevNode->PhbId = SlotMapPtr->PhbId;
142 /* Found it, extract the data. */
143 if (SlotMapPtr->PhbId == DevNode->PhbId ) {
144 memcpy(&DevNode->CardLocation,
145 &SlotMapPtr->CardLocation, 3);
146 DevNode->CardLocation[3] = 0;
150 /* Point to the next Slot */
151 SlotMapPtr = (SlotMap *)((char *)SlotMapPtr + SLOT_ENTRY_SIZE);
152 SlotMapLen -= SLOT_ENTRY_SIZE;
159 static void iSeries_Parse_MfgArea(u8 *AreaData, int AreaLen,
160 struct iSeries_Device_Node *DevNode)
162 MfgArea *MfgAreaPtr = (MfgArea *)AreaData;
163 int MfgAreaLen = AreaLen;
167 while (MfgAreaLen > 0) {
168 int MfgTagLen = MfgAreaPtr->TagLength;
169 /* Frame ID (FI 4649020310 ) */
170 if (MfgAreaPtr->Tag == VpdFruFrameId) /* FI */
171 DevNode->FrameId = MfgAreaPtr->AreaData1;
172 /* Slot Map Format (MF 4D46020004 ) */
173 else if (MfgAreaPtr->Tag == VpdSlotMapFormat) /* MF */
174 SlotMapFmt = (MfgAreaPtr->AreaData1 * 256)
175 + MfgAreaPtr->AreaData2;
176 /* Slot Map (SM 534D90 */
177 else if (MfgAreaPtr->Tag == VpdSlotMap) { /* SM */
180 if (SlotMapFmt == 0x1004)
181 SlotMapPtr = (SlotMap *)((char *)MfgAreaPtr
182 + MFG_ENTRY_SIZE + 1);
184 SlotMapPtr = (SlotMap *)((char *)MfgAreaPtr
186 iSeries_Parse_SlotArea(SlotMapPtr, MfgTagLen, DevNode);
189 * Point to the next Mfg Area
190 * Use defined size, sizeof give wrong answer
192 MfgAreaPtr = (MfgArea *)((char *)MfgAreaPtr + MfgTagLen
194 MfgAreaLen -= (MfgTagLen + MFG_ENTRY_SIZE);
199 * Look for "BUS".. Data is not Null terminated.
200 * PHBID of 0xFF indicates PHB was not found in VPD Data.
202 static int iSeries_Parse_PhbId(u8 *AreaPtr, int AreaLength)
204 u8 *PhbPtr = AreaPtr;
205 int DataLen = AreaLength;
208 while (DataLen > 0) {
209 if ((*PhbPtr == 'B') && (*(PhbPtr + 1) == 'U')
210 && (*(PhbPtr + 2) == 'S')) {
212 while (*PhbPtr == ' ')
214 PhbId = (*PhbPtr & 0x0F);
224 * Parse out the VPD Areas
226 static void iSeries_Parse_Vpd(u8 *VpdData, int VpdDataLen,
227 struct iSeries_Device_Node *DevNode)
229 u8 *TagPtr = VpdData;
230 int DataLen = VpdDataLen - 3;
232 while ((*TagPtr != VpdEndOfAreaTag) && (DataLen > 0)) {
233 int AreaLen = *(TagPtr + 1) + (*(TagPtr + 2) * 256);
234 u8 *AreaData = TagPtr + 3;
236 if (*TagPtr == VpdIdStringTag)
237 DevNode->PhbId = iSeries_Parse_PhbId(AreaData, AreaLen);
238 else if (*TagPtr == VpdVendorAreaTag)
239 iSeries_Parse_MfgArea(AreaData, AreaLen, DevNode);
240 /* Point to next Area. */
241 TagPtr = AreaData + AreaLen;
246 void iSeries_Get_Location_Code(struct iSeries_Device_Node *DevNode)
249 u8 *BusVpdPtr = kmalloc(BUS_VPDSIZE, GFP_KERNEL);
251 if (BusVpdPtr == NULL) {
252 printk("PCI: Bus VPD Buffer allocation failure.\n");
255 BusVpdLen = HvCallPci_getBusVpd(ISERIES_BUS(DevNode),
256 ISERIES_HV_ADDR(BusVpdPtr),
258 if (BusVpdLen == 0) {
260 printk("PCI: Bus VPD Buffer zero length.\n");
263 /* printk("PCI: BusVpdPtr: %p, %d\n",BusVpdPtr, BusVpdLen); */
264 /* Make sure this is what I think it is */
265 if (*BusVpdPtr != VpdIdStringTag) { /* 0x82 */
266 printk("PCI: Bus VPD Buffer missing starting tag.\n");
270 iSeries_Parse_Vpd(BusVpdPtr,BusVpdLen, DevNode);
271 sprintf(DevNode->Location, "Frame%3d, Card %-4s", DevNode->FrameId,
272 DevNode->CardLocation);