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diff --git a/arch/ppc64/kernel/iSeries_VpdInfo.c b/arch/ppc64/kernel/iSeries_VpdInfo.c
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1/************************************************************************/
2/* File iSeries_vpdInfo.c created by Allan Trautman on Fri Feb 2 2001. */
3/************************************************************************/
4/* This code gets the card location of the hardware */
5/* Copyright (C) 20yy <Allan H Trautman> <IBM Corp> */
6/* */
7/* This program is free software; you can redistribute it and/or modify */
8/* it under the terms of the GNU General Public License as published by */
9/* the Free Software Foundation; either version 2 of the License, or */
10/* (at your option) any later version. */
11/* */
12/* This program is distributed in the hope that it will be useful, */
13/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
14/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
15/* GNU General Public License for more details. */
16/* */
17/* You should have received a copy of the GNU General Public License */
18/* along with this program; if not, write to the: */
19/* Free Software Foundation, Inc., */
20/* 59 Temple Place, Suite 330, */
21/* Boston, MA 02111-1307 USA */
22/************************************************************************/
23/* Change Activity: */
24/* Created, Feb 2, 2001 */
25/* Ported to ppc64, August 20, 2001 */
26/* End Change Activity */
27/************************************************************************/
28#include <linux/config.h>
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>
34
35#include <asm/iSeries/HvCallPci.h>
36#include <asm/iSeries/HvTypes.h>
37#include <asm/iSeries/mf.h>
38#include <asm/iSeries/LparData.h>
39#include <asm/iSeries/iSeries_pci.h>
40#include "pci.h"
41
42/*
43 * Size of Bus VPD data
44 */
45#define BUS_VPDSIZE 1024
46/*
47 * Bus Vpd Tags
48 */
49#define VpdEndOfDataTag 0x78
50#define VpdEndOfAreaTag 0x79
51#define VpdIdStringTag 0x82
52#define VpdVendorAreaTag 0x84
53/*
54 * Mfg Area Tags
55 */
56#define VpdFruFlag 0x4647 // "FG"
57#define VpdFruFrameId 0x4649 // "FI"
58#define VpdSlotMapFormat 0x4D46 // "MF"
59#define VpdAsmPartNumber 0x504E // "PN"
60#define VpdFruSerial 0x534E // "SN"
61#define VpdSlotMap 0x534D // "SM"
62
63/*
64 * Structures of the areas
65 */
66struct MfgVpdAreaStruct {
67 u16 Tag;
68 u8 TagLength;
69 u8 AreaData1;
70 u8 AreaData2;
71};
72typedef struct MfgVpdAreaStruct MfgArea;
73#define MFG_ENTRY_SIZE 3
74
75struct SlotMapStruct {
76 u8 AgentId;
77 u8 SecondaryAgentId;
78 u8 PhbId;
79 char CardLocation[3];
80 char Parms[8];
81 char Reserved[2];
82};
83typedef struct SlotMapStruct SlotMap;
84#define SLOT_ENTRY_SIZE 16
85
86/*
87 * Formats the device information.
88 * - Pass in pci_dev* pointer to the device.
89 * - Pass in buffer to place the data. Danger here is the buffer must
90 * be as big as the client says it is. Should be at least 128 bytes.
91 * Return will the length of the string data put in the buffer.
92 * Format:
93 * PCI: Bus 0, Device 26, Vendor 0x12AE Frame 1, Card C10 Ethernet
94 * controller
95 */
96int iSeries_Device_Information(struct pci_dev *PciDev, char *buffer,
97 int BufferSize)
98{
99 struct iSeries_Device_Node *DevNode =
100 (struct iSeries_Device_Node *)PciDev->sysdata;
101 int len;
102
103 if (DevNode == NULL)
104 return sprintf(buffer,
105 "PCI: iSeries_Device_Information DevNode is NULL");
106
107 if (BufferSize < 128)
108 return 0;
109
110 len = sprintf(buffer, "PCI: Bus%3d, Device%3d, Vendor %04X ",
111 ISERIES_BUS(DevNode), PCI_SLOT(PciDev->devfn),
112 PciDev->vendor);
113 len += sprintf(buffer + len, "Frame%3d, Card %4s ",
114 DevNode->FrameId, DevNode->CardLocation);
115#ifdef CONFIG_PCI
116 if (pci_class_name(PciDev->class >> 8) == 0)
117 len += sprintf(buffer + len, "0x%04X ",
118 (int)(PciDev->class >> 8));
119 else
120 len += sprintf(buffer + len, "%s",
121 pci_class_name(PciDev->class >> 8));
122#endif
123 return len;
124}
125
126/*
127 * Parse the Slot Area
128 */
129void iSeries_Parse_SlotArea(SlotMap *MapPtr, int MapLen,
130 struct iSeries_Device_Node *DevNode)
131{
132 int SlotMapLen = MapLen;
133 SlotMap *SlotMapPtr = MapPtr;
134
135 /*
136 * Parse Slot label until we find the one requrested
137 */
138 while (SlotMapLen > 0) {
139 if (SlotMapPtr->AgentId == DevNode->AgentId ) {
140 /*
141 * If Phb wasn't found, grab the entry first one found.
142 */
143 if (DevNode->PhbId == 0xff)
144 DevNode->PhbId = SlotMapPtr->PhbId;
145 /* Found it, extract the data. */
146 if (SlotMapPtr->PhbId == DevNode->PhbId ) {
147 memcpy(&DevNode->CardLocation,
148 &SlotMapPtr->CardLocation, 3);
149 DevNode->CardLocation[3] = 0;
150 break;
151 }
152 }
153 /* Point to the next Slot */
154 SlotMapPtr = (SlotMap *)((char *)SlotMapPtr + SLOT_ENTRY_SIZE);
155 SlotMapLen -= SLOT_ENTRY_SIZE;
156 }
157}
158
159/*
160 * Parse the Mfg Area
161 */
162static void iSeries_Parse_MfgArea(u8 *AreaData, int AreaLen,
163 struct iSeries_Device_Node *DevNode)
164{
165 MfgArea *MfgAreaPtr = (MfgArea *)AreaData;
166 int MfgAreaLen = AreaLen;
167 u16 SlotMapFmt = 0;
168
169 /* Parse Mfg Data */
170 while (MfgAreaLen > 0) {
171 int MfgTagLen = MfgAreaPtr->TagLength;
172 /* Frame ID (FI 4649020310 ) */
173 if (MfgAreaPtr->Tag == VpdFruFrameId) /* FI */
174 DevNode->FrameId = MfgAreaPtr->AreaData1;
175 /* Slot Map Format (MF 4D46020004 ) */
176 else if (MfgAreaPtr->Tag == VpdSlotMapFormat) /* MF */
177 SlotMapFmt = (MfgAreaPtr->AreaData1 * 256)
178 + MfgAreaPtr->AreaData2;
179 /* Slot Map (SM 534D90 */
180 else if (MfgAreaPtr->Tag == VpdSlotMap) { /* SM */
181 SlotMap *SlotMapPtr;
182
183 if (SlotMapFmt == 0x1004)
184 SlotMapPtr = (SlotMap *)((char *)MfgAreaPtr
185 + MFG_ENTRY_SIZE + 1);
186 else
187 SlotMapPtr = (SlotMap *)((char *)MfgAreaPtr
188 + MFG_ENTRY_SIZE);
189 iSeries_Parse_SlotArea(SlotMapPtr, MfgTagLen, DevNode);
190 }
191 /*
192 * Point to the next Mfg Area
193 * Use defined size, sizeof give wrong answer
194 */
195 MfgAreaPtr = (MfgArea *)((char *)MfgAreaPtr + MfgTagLen
196 + MFG_ENTRY_SIZE);
197 MfgAreaLen -= (MfgTagLen + MFG_ENTRY_SIZE);
198 }
199}
200
201/*
202 * Look for "BUS".. Data is not Null terminated.
203 * PHBID of 0xFF indicates PHB was not found in VPD Data.
204 */
205static int iSeries_Parse_PhbId(u8 *AreaPtr, int AreaLength)
206{
207 u8 *PhbPtr = AreaPtr;
208 int DataLen = AreaLength;
209 char PhbId = 0xFF;
210
211 while (DataLen > 0) {
212 if ((*PhbPtr == 'B') && (*(PhbPtr + 1) == 'U')
213 && (*(PhbPtr + 2) == 'S')) {
214 PhbPtr += 3;
215 while (*PhbPtr == ' ')
216 ++PhbPtr;
217 PhbId = (*PhbPtr & 0x0F);
218 break;
219 }
220 ++PhbPtr;
221 --DataLen;
222 }
223 return PhbId;
224}
225
226/*
227 * Parse out the VPD Areas
228 */
229static void iSeries_Parse_Vpd(u8 *VpdData, int VpdDataLen,
230 struct iSeries_Device_Node *DevNode)
231{
232 u8 *TagPtr = VpdData;
233 int DataLen = VpdDataLen - 3;
234
235 while ((*TagPtr != VpdEndOfAreaTag) && (DataLen > 0)) {
236 int AreaLen = *(TagPtr + 1) + (*(TagPtr + 2) * 256);
237 u8 *AreaData = TagPtr + 3;
238
239 if (*TagPtr == VpdIdStringTag)
240 DevNode->PhbId = iSeries_Parse_PhbId(AreaData, AreaLen);
241 else if (*TagPtr == VpdVendorAreaTag)
242 iSeries_Parse_MfgArea(AreaData, AreaLen, DevNode);
243 /* Point to next Area. */
244 TagPtr = AreaData + AreaLen;
245 DataLen -= AreaLen;
246 }
247}
248
249void iSeries_Get_Location_Code(struct iSeries_Device_Node *DevNode)
250{
251 int BusVpdLen = 0;
252 u8 *BusVpdPtr = (u8 *)kmalloc(BUS_VPDSIZE, GFP_KERNEL);
253
254 if (BusVpdPtr == NULL) {
255 printk("PCI: Bus VPD Buffer allocation failure.\n");
256 return;
257 }
258 BusVpdLen = HvCallPci_getBusVpd(ISERIES_BUS(DevNode),
259 ISERIES_HV_ADDR(BusVpdPtr),
260 BUS_VPDSIZE);
261 if (BusVpdLen == 0) {
262 kfree(BusVpdPtr);
263 printk("PCI: Bus VPD Buffer zero length.\n");
264 return;
265 }
266 /* printk("PCI: BusVpdPtr: %p, %d\n",BusVpdPtr, BusVpdLen); */
267 /* Make sure this is what I think it is */
268 if (*BusVpdPtr != VpdIdStringTag) { /* 0x82 */
269 printk("PCI: Bus VPD Buffer missing starting tag.\n");
270 kfree(BusVpdPtr);
271 return;
272 }
273 iSeries_Parse_Vpd(BusVpdPtr,BusVpdLen, DevNode);
274 sprintf(DevNode->Location, "Frame%3d, Card %-4s", DevNode->FrameId,
275 DevNode->CardLocation);
276 kfree(BusVpdPtr);
277}
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