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>
30 #include <asm/types.h>
31 #include <asm/resource.h>
33 #include <asm/iSeries/HvCallPci.h>
34 #include <asm/iSeries/HvTypes.h>
35 #include <asm/iSeries/iSeries_pci.h>
38 * Size of Bus VPD data
40 #define BUS_VPDSIZE 1024
45 #define VpdEndOfAreaTag 0x79
46 #define VpdIdStringTag 0x82
47 #define VpdVendorAreaTag 0x84
52 #define VpdFruFrameId 0x4649 // "FI"
53 #define VpdSlotMapFormat 0x4D46 // "MF"
54 #define VpdSlotMap 0x534D // "SM"
57 * Structures of the areas
59 struct MfgVpdAreaStruct {
65 typedef struct MfgVpdAreaStruct MfgArea;
66 #define MFG_ENTRY_SIZE 3
68 struct SlotMapStruct {
76 typedef struct SlotMapStruct SlotMap;
77 #define SLOT_ENTRY_SIZE 16
82 static void __init iSeries_Parse_SlotArea(SlotMap *MapPtr, int MapLen,
83 HvAgentId agent, u8 *PhbId, char card[4])
85 int SlotMapLen = MapLen;
86 SlotMap *SlotMapPtr = MapPtr;
89 * Parse Slot label until we find the one requested
91 while (SlotMapLen > 0) {
92 if (SlotMapPtr->AgentId == agent) {
94 * If Phb wasn't found, grab the entry first one found.
97 *PhbId = SlotMapPtr->PhbId;
98 /* Found it, extract the data. */
99 if (SlotMapPtr->PhbId == *PhbId) {
100 memcpy(card, &SlotMapPtr->CardLocation, 3);
105 /* Point to the next Slot */
106 SlotMapPtr = (SlotMap *)((char *)SlotMapPtr + SLOT_ENTRY_SIZE);
107 SlotMapLen -= SLOT_ENTRY_SIZE;
114 static void __init iSeries_Parse_MfgArea(u8 *AreaData, int AreaLen,
115 HvAgentId agent, u8 *PhbId,
116 u8 *frame, char card[4])
118 MfgArea *MfgAreaPtr = (MfgArea *)AreaData;
119 int MfgAreaLen = AreaLen;
123 while (MfgAreaLen > 0) {
124 int MfgTagLen = MfgAreaPtr->TagLength;
125 /* Frame ID (FI 4649020310 ) */
126 if (MfgAreaPtr->Tag == VpdFruFrameId) /* FI */
127 *frame = MfgAreaPtr->AreaData1;
128 /* Slot Map Format (MF 4D46020004 ) */
129 else if (MfgAreaPtr->Tag == VpdSlotMapFormat) /* MF */
130 SlotMapFmt = (MfgAreaPtr->AreaData1 * 256)
131 + MfgAreaPtr->AreaData2;
132 /* Slot Map (SM 534D90 */
133 else if (MfgAreaPtr->Tag == VpdSlotMap) { /* SM */
136 if (SlotMapFmt == 0x1004)
137 SlotMapPtr = (SlotMap *)((char *)MfgAreaPtr
138 + MFG_ENTRY_SIZE + 1);
140 SlotMapPtr = (SlotMap *)((char *)MfgAreaPtr
142 iSeries_Parse_SlotArea(SlotMapPtr, MfgTagLen,
146 * Point to the next Mfg Area
147 * Use defined size, sizeof give wrong answer
149 MfgAreaPtr = (MfgArea *)((char *)MfgAreaPtr + MfgTagLen
151 MfgAreaLen -= (MfgTagLen + MFG_ENTRY_SIZE);
156 * Look for "BUS".. Data is not Null terminated.
157 * PHBID of 0xFF indicates PHB was not found in VPD Data.
159 static int __init iSeries_Parse_PhbId(u8 *AreaPtr, int AreaLength)
161 u8 *PhbPtr = AreaPtr;
162 int DataLen = AreaLength;
165 while (DataLen > 0) {
166 if ((*PhbPtr == 'B') && (*(PhbPtr + 1) == 'U')
167 && (*(PhbPtr + 2) == 'S')) {
169 while (*PhbPtr == ' ')
171 PhbId = (*PhbPtr & 0x0F);
181 * Parse out the VPD Areas
183 static void __init iSeries_Parse_Vpd(u8 *VpdData, int VpdDataLen,
184 HvAgentId agent, u8 *frame, char card[4])
186 u8 *TagPtr = VpdData;
187 int DataLen = VpdDataLen - 3;
190 while ((*TagPtr != VpdEndOfAreaTag) && (DataLen > 0)) {
191 int AreaLen = *(TagPtr + 1) + (*(TagPtr + 2) * 256);
192 u8 *AreaData = TagPtr + 3;
194 if (*TagPtr == VpdIdStringTag)
195 PhbId = iSeries_Parse_PhbId(AreaData, AreaLen);
196 else if (*TagPtr == VpdVendorAreaTag)
197 iSeries_Parse_MfgArea(AreaData, AreaLen,
198 agent, &PhbId, frame, card);
199 /* Point to next Area. */
200 TagPtr = AreaData + AreaLen;
205 static void __init iSeries_Get_Location_Code(u16 bus, HvAgentId agent,
206 u8 *frame, char card[4])
209 u8 *BusVpdPtr = kmalloc(BUS_VPDSIZE, GFP_KERNEL);
211 if (BusVpdPtr == NULL) {
212 printk("PCI: Bus VPD Buffer allocation failure.\n");
215 BusVpdLen = HvCallPci_getBusVpd(bus, ISERIES_HV_ADDR(BusVpdPtr),
217 if (BusVpdLen == 0) {
218 printk("PCI: Bus VPD Buffer zero length.\n");
221 /* printk("PCI: BusVpdPtr: %p, %d\n",BusVpdPtr, BusVpdLen); */
222 /* Make sure this is what I think it is */
223 if (*BusVpdPtr != VpdIdStringTag) { /* 0x82 */
224 printk("PCI: Bus VPD Buffer missing starting tag.\n");
227 iSeries_Parse_Vpd(BusVpdPtr, BusVpdLen, agent, frame, card);
233 * Prints the device information.
234 * - Pass in pci_dev* pointer to the device.
235 * - Pass in the device count
238 * PCI: Bus 0, Device 26, Vendor 0x12AE Frame 1, Card C10 Ethernet
241 void __init iSeries_Device_Information(struct pci_dev *PciDev, int count)
243 struct device_node *DevNode = PciDev->sysdata;
247 HvSubBusNumber subbus;
250 if (DevNode == NULL) {
251 printk("%d. PCI: iSeries_Device_Information DevNode is NULL\n",
256 bus = ISERIES_BUS(DevNode);
257 subbus = ISERIES_SUBBUS(DevNode);
258 agent = ISERIES_PCI_AGENTID(ISERIES_GET_DEVICE_FROM_SUBBUS(subbus),
259 ISERIES_GET_FUNCTION_FROM_SUBBUS(subbus));
260 iSeries_Get_Location_Code(bus, agent, &frame, card);
262 printk("%d. PCI: Bus%3d, Device%3d, Vendor %04X Frame%3d, Card %4s ",
263 count, bus, PCI_SLOT(PciDev->devfn), PciDev->vendor,
265 printk("0x%04X\n", (int)(PciDev->class >> 8));