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/pci-bridge.h>
35 #include <asm/iseries/hv_types.h>
41 * Size of Bus VPD data
43 #define BUS_VPDSIZE 1024
48 #define VpdEndOfAreaTag 0x79
49 #define VpdIdStringTag 0x82
50 #define VpdVendorAreaTag 0x84
55 #define VpdFruFrameId 0x4649 // "FI"
56 #define VpdSlotMapFormat 0x4D46 // "MF"
57 #define VpdSlotMap 0x534D // "SM"
60 * Structures of the areas
62 struct MfgVpdAreaStruct {
68 typedef struct MfgVpdAreaStruct MfgArea;
69 #define MFG_ENTRY_SIZE 3
71 struct SlotMapStruct {
79 typedef struct SlotMapStruct SlotMap;
80 #define SLOT_ENTRY_SIZE 16
85 static void __init iSeries_Parse_SlotArea(SlotMap *MapPtr, int MapLen,
86 HvAgentId agent, u8 *PhbId, char card[4])
88 int SlotMapLen = MapLen;
89 SlotMap *SlotMapPtr = MapPtr;
92 * Parse Slot label until we find the one requested
94 while (SlotMapLen > 0) {
95 if (SlotMapPtr->AgentId == agent) {
97 * If Phb wasn't found, grab the entry first one found.
100 *PhbId = SlotMapPtr->PhbId;
101 /* Found it, extract the data. */
102 if (SlotMapPtr->PhbId == *PhbId) {
103 memcpy(card, &SlotMapPtr->CardLocation, 3);
108 /* Point to the next Slot */
109 SlotMapPtr = (SlotMap *)((char *)SlotMapPtr + SLOT_ENTRY_SIZE);
110 SlotMapLen -= SLOT_ENTRY_SIZE;
117 static void __init iSeries_Parse_MfgArea(u8 *AreaData, int AreaLen,
118 HvAgentId agent, u8 *PhbId,
119 u8 *frame, char card[4])
121 MfgArea *MfgAreaPtr = (MfgArea *)AreaData;
122 int MfgAreaLen = AreaLen;
126 while (MfgAreaLen > 0) {
127 int MfgTagLen = MfgAreaPtr->TagLength;
128 /* Frame ID (FI 4649020310 ) */
129 if (MfgAreaPtr->Tag == VpdFruFrameId) /* FI */
130 *frame = MfgAreaPtr->AreaData1;
131 /* Slot Map Format (MF 4D46020004 ) */
132 else if (MfgAreaPtr->Tag == VpdSlotMapFormat) /* MF */
133 SlotMapFmt = (MfgAreaPtr->AreaData1 * 256)
134 + MfgAreaPtr->AreaData2;
135 /* Slot Map (SM 534D90 */
136 else if (MfgAreaPtr->Tag == VpdSlotMap) { /* SM */
139 if (SlotMapFmt == 0x1004)
140 SlotMapPtr = (SlotMap *)((char *)MfgAreaPtr
141 + MFG_ENTRY_SIZE + 1);
143 SlotMapPtr = (SlotMap *)((char *)MfgAreaPtr
145 iSeries_Parse_SlotArea(SlotMapPtr, MfgTagLen,
149 * Point to the next Mfg Area
150 * Use defined size, sizeof give wrong answer
152 MfgAreaPtr = (MfgArea *)((char *)MfgAreaPtr + MfgTagLen
154 MfgAreaLen -= (MfgTagLen + MFG_ENTRY_SIZE);
159 * Look for "BUS".. Data is not Null terminated.
160 * PHBID of 0xFF indicates PHB was not found in VPD Data.
162 static int __init iSeries_Parse_PhbId(u8 *AreaPtr, int AreaLength)
164 u8 *PhbPtr = AreaPtr;
165 int DataLen = AreaLength;
168 while (DataLen > 0) {
169 if ((*PhbPtr == 'B') && (*(PhbPtr + 1) == 'U')
170 && (*(PhbPtr + 2) == 'S')) {
172 while (*PhbPtr == ' ')
174 PhbId = (*PhbPtr & 0x0F);
184 * Parse out the VPD Areas
186 static void __init iSeries_Parse_Vpd(u8 *VpdData, int VpdDataLen,
187 HvAgentId agent, u8 *frame, char card[4])
189 u8 *TagPtr = VpdData;
190 int DataLen = VpdDataLen - 3;
193 while ((*TagPtr != VpdEndOfAreaTag) && (DataLen > 0)) {
194 int AreaLen = *(TagPtr + 1) + (*(TagPtr + 2) * 256);
195 u8 *AreaData = TagPtr + 3;
197 if (*TagPtr == VpdIdStringTag)
198 PhbId = iSeries_Parse_PhbId(AreaData, AreaLen);
199 else if (*TagPtr == VpdVendorAreaTag)
200 iSeries_Parse_MfgArea(AreaData, AreaLen,
201 agent, &PhbId, frame, card);
202 /* Point to next Area. */
203 TagPtr = AreaData + AreaLen;
208 static int __init iSeries_Get_Location_Code(u16 bus, HvAgentId agent,
209 u8 *frame, char card[4])
213 u8 *BusVpdPtr = kmalloc(BUS_VPDSIZE, GFP_KERNEL);
215 if (BusVpdPtr == NULL) {
216 printk("PCI: Bus VPD Buffer allocation failure.\n");
219 BusVpdLen = HvCallPci_getBusVpd(bus, iseries_hv_addr(BusVpdPtr),
221 if (BusVpdLen == 0) {
222 printk("PCI: Bus VPD Buffer zero length.\n");
225 /* printk("PCI: BusVpdPtr: %p, %d\n",BusVpdPtr, BusVpdLen); */
226 /* Make sure this is what I think it is */
227 if (*BusVpdPtr != VpdIdStringTag) { /* 0x82 */
228 printk("PCI: Bus VPD Buffer missing starting tag.\n");
231 iSeries_Parse_Vpd(BusVpdPtr, BusVpdLen, agent, frame, card);
239 * Prints the device information.
240 * - Pass in pci_dev* pointer to the device.
241 * - Pass in the device count
244 * PCI: Bus 0, Device 26, Vendor 0x12AE Frame 1, Card C10 Ethernet
247 void __init iSeries_Device_Information(struct pci_dev *PciDev, int count)
249 struct device_node *DevNode = PciDev->sysdata;
254 HvSubBusNumber subbus;
257 if (DevNode == NULL) {
258 printk("%d. PCI: iSeries_Device_Information DevNode is NULL\n",
263 pdn = PCI_DN(DevNode);
265 subbus = pdn->bussubno;
266 agent = ISERIES_PCI_AGENTID(ISERIES_GET_DEVICE_FROM_SUBBUS(subbus),
267 ISERIES_GET_FUNCTION_FROM_SUBBUS(subbus));
269 if (iSeries_Get_Location_Code(bus, agent, &frame, card)) {
270 printk("%d. PCI: Bus%3d, Device%3d, Vendor %04X Frame%3d, "
271 "Card %4s 0x%04X\n", count, bus,
272 PCI_SLOT(PciDev->devfn), PciDev->vendor, frame,
273 card, (int)(PciDev->class >> 8));