2 * This code gets the card location of the hardware
3 * Copyright (C) 2001 <Allan H Trautman> <IBM Corp>
4 * Copyright (C) 2005 Stephen Rothwel, IBM Corp
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the:
18 * Free Software Foundation, Inc.,
19 * 59 Temple Place, Suite 330,
20 * Boston, MA 02111-1307 USA
23 * Created, Feb 2, 2001
24 * Ported to ppc64, August 20, 2001
27 #include <linux/init.h>
28 #include <linux/module.h>
29 #include <linux/pci.h>
31 #include <asm/types.h>
32 #include <asm/resource.h>
33 #include <asm/abs_addr.h>
34 #include <asm/iseries/hv_types.h>
40 * Size of Bus VPD data
42 #define BUS_VPDSIZE 1024
47 #define VpdEndOfAreaTag 0x79
48 #define VpdIdStringTag 0x82
49 #define VpdVendorAreaTag 0x84
54 #define VpdFruFrameId 0x4649 // "FI"
55 #define VpdSlotMapFormat 0x4D46 // "MF"
56 #define VpdSlotMap 0x534D // "SM"
59 * Structures of the areas
61 struct MfgVpdAreaStruct {
67 typedef struct MfgVpdAreaStruct MfgArea;
68 #define MFG_ENTRY_SIZE 3
70 struct SlotMapStruct {
78 typedef struct SlotMapStruct SlotMap;
79 #define SLOT_ENTRY_SIZE 16
84 static void __init iSeries_Parse_SlotArea(SlotMap *MapPtr, int MapLen,
85 HvAgentId agent, u8 *PhbId, char card[4])
87 int SlotMapLen = MapLen;
88 SlotMap *SlotMapPtr = MapPtr;
91 * Parse Slot label until we find the one requested
93 while (SlotMapLen > 0) {
94 if (SlotMapPtr->AgentId == agent) {
96 * If Phb wasn't found, grab the entry first one found.
99 *PhbId = SlotMapPtr->PhbId;
100 /* Found it, extract the data. */
101 if (SlotMapPtr->PhbId == *PhbId) {
102 memcpy(card, &SlotMapPtr->CardLocation, 3);
107 /* Point to the next Slot */
108 SlotMapPtr = (SlotMap *)((char *)SlotMapPtr + SLOT_ENTRY_SIZE);
109 SlotMapLen -= SLOT_ENTRY_SIZE;
116 static void __init iSeries_Parse_MfgArea(u8 *AreaData, int AreaLen,
117 HvAgentId agent, u8 *PhbId,
118 u8 *frame, char card[4])
120 MfgArea *MfgAreaPtr = (MfgArea *)AreaData;
121 int MfgAreaLen = AreaLen;
125 while (MfgAreaLen > 0) {
126 int MfgTagLen = MfgAreaPtr->TagLength;
127 /* Frame ID (FI 4649020310 ) */
128 if (MfgAreaPtr->Tag == VpdFruFrameId) /* FI */
129 *frame = MfgAreaPtr->AreaData1;
130 /* Slot Map Format (MF 4D46020004 ) */
131 else if (MfgAreaPtr->Tag == VpdSlotMapFormat) /* MF */
132 SlotMapFmt = (MfgAreaPtr->AreaData1 * 256)
133 + MfgAreaPtr->AreaData2;
134 /* Slot Map (SM 534D90 */
135 else if (MfgAreaPtr->Tag == VpdSlotMap) { /* SM */
138 if (SlotMapFmt == 0x1004)
139 SlotMapPtr = (SlotMap *)((char *)MfgAreaPtr
140 + MFG_ENTRY_SIZE + 1);
142 SlotMapPtr = (SlotMap *)((char *)MfgAreaPtr
144 iSeries_Parse_SlotArea(SlotMapPtr, MfgTagLen,
148 * Point to the next Mfg Area
149 * Use defined size, sizeof give wrong answer
151 MfgAreaPtr = (MfgArea *)((char *)MfgAreaPtr + MfgTagLen
153 MfgAreaLen -= (MfgTagLen + MFG_ENTRY_SIZE);
158 * Look for "BUS".. Data is not Null terminated.
159 * PHBID of 0xFF indicates PHB was not found in VPD Data.
161 static int __init iSeries_Parse_PhbId(u8 *AreaPtr, int AreaLength)
163 u8 *PhbPtr = AreaPtr;
164 int DataLen = AreaLength;
167 while (DataLen > 0) {
168 if ((*PhbPtr == 'B') && (*(PhbPtr + 1) == 'U')
169 && (*(PhbPtr + 2) == 'S')) {
171 while (*PhbPtr == ' ')
173 PhbId = (*PhbPtr & 0x0F);
183 * Parse out the VPD Areas
185 static void __init iSeries_Parse_Vpd(u8 *VpdData, int VpdDataLen,
186 HvAgentId agent, u8 *frame, char card[4])
188 u8 *TagPtr = VpdData;
189 int DataLen = VpdDataLen - 3;
192 while ((*TagPtr != VpdEndOfAreaTag) && (DataLen > 0)) {
193 int AreaLen = *(TagPtr + 1) + (*(TagPtr + 2) * 256);
194 u8 *AreaData = TagPtr + 3;
196 if (*TagPtr == VpdIdStringTag)
197 PhbId = iSeries_Parse_PhbId(AreaData, AreaLen);
198 else if (*TagPtr == VpdVendorAreaTag)
199 iSeries_Parse_MfgArea(AreaData, AreaLen,
200 agent, &PhbId, frame, card);
201 /* Point to next Area. */
202 TagPtr = AreaData + AreaLen;
207 static int __init iSeries_Get_Location_Code(u16 bus, HvAgentId agent,
208 u8 *frame, char card[4])
212 u8 *BusVpdPtr = kmalloc(BUS_VPDSIZE, GFP_KERNEL);
214 if (BusVpdPtr == NULL) {
215 printk("PCI: Bus VPD Buffer allocation failure.\n");
218 BusVpdLen = HvCallPci_getBusVpd(bus, iseries_hv_addr(BusVpdPtr),
220 if (BusVpdLen == 0) {
221 printk("PCI: Bus VPD Buffer zero length.\n");
224 /* printk("PCI: BusVpdPtr: %p, %d\n",BusVpdPtr, BusVpdLen); */
225 /* Make sure this is what I think it is */
226 if (*BusVpdPtr != VpdIdStringTag) { /* 0x82 */
227 printk("PCI: Bus VPD Buffer missing starting tag.\n");
230 iSeries_Parse_Vpd(BusVpdPtr, BusVpdLen, agent, frame, card);
238 * Prints the device information.
239 * - Pass in pci_dev* pointer to the device.
240 * - Pass in the device count
243 * PCI: Bus 0, Device 26, Vendor 0x12AE Frame 1, Card C10 Ethernet
246 void __init iSeries_Device_Information(struct pci_dev *PciDev, int count,
247 u16 bus, HvSubBusNumber subbus)
253 agent = ISERIES_PCI_AGENTID(ISERIES_GET_DEVICE_FROM_SUBBUS(subbus),
254 ISERIES_GET_FUNCTION_FROM_SUBBUS(subbus));
256 if (iSeries_Get_Location_Code(bus, agent, &frame, card)) {
257 printk("%d. PCI: Bus%3d, Device%3d, Vendor %04X Frame%3d, "
258 "Card %4s 0x%04X\n", count, bus,
259 PCI_SLOT(PciDev->devfn), PciDev->vendor, frame,
260 card, (int)(PciDev->class >> 8));