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kernel_samsung_sm7125/arch/ppc/platforms/residual.c

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
20 years ago
/*
* Code to deal with the PReP residual data.
*
* Written by: Cort Dougan (cort@cs.nmt.edu)
* Improved _greatly_ and rewritten by Gabriel Paubert (paubert@iram.es)
*
* This file is based on the following documentation:
*
* IBM Power Personal Systems Architecture
* Residual Data
* Document Number: PPS-AR-FW0001
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive
* for more details.
*
*/
#include <linux/string.h>
#include <asm/residual.h>
#include <asm/pnp.h>
#include <asm/byteorder.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/stddef.h>
#include <linux/unistd.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/user.h>
#include <linux/a.out.h>
#include <linux/tty.h>
#include <linux/major.h>
#include <linux/interrupt.h>
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/ide.h>
#include <asm/sections.h>
#include <asm/mmu.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/ide.h>
unsigned char __res[sizeof(RESIDUAL)] __prepdata = {0,};
RESIDUAL *res = (RESIDUAL *)&__res;
char * PnP_BASE_TYPES[] __initdata = {
"Reserved",
"MassStorageDevice",
"NetworkInterfaceController",
"DisplayController",
"MultimediaController",
"MemoryController",
"BridgeController",
"CommunicationsDevice",
"SystemPeripheral",
"InputDevice",
"ServiceProcessor"
};
/* Device Sub Type Codes */
unsigned char * PnP_SUB_TYPES[] __initdata = {
"\001\000SCSIController",
"\001\001IDEController",
"\001\002FloppyController",
"\001\003IPIController",
"\001\200OtherMassStorageController",
"\002\000EthernetController",
"\002\001TokenRingController",
"\002\002FDDIController",
"\002\0x80OtherNetworkController",
"\003\000VGAController",
"\003\001SVGAController",
"\003\002XGAController",
"\003\200OtherDisplayController",
"\004\000VideoController",
"\004\001AudioController",
"\004\200OtherMultimediaController",
"\005\000RAM",
"\005\001FLASH",
"\005\200OtherMemoryDevice",
"\006\000HostProcessorBridge",
"\006\001ISABridge",
"\006\002EISABridge",
"\006\003MicroChannelBridge",
"\006\004PCIBridge",
"\006\005PCMCIABridge",
"\006\006VMEBridge",
"\006\200OtherBridgeDevice",
"\007\000RS232Device",
"\007\001ATCompatibleParallelPort",
"\007\200OtherCommunicationsDevice",
"\010\000ProgrammableInterruptController",
"\010\001DMAController",
"\010\002SystemTimer",
"\010\003RealTimeClock",
"\010\004L2Cache",
"\010\005NVRAM",
"\010\006PowerManagement",
"\010\007CMOS",
"\010\010OperatorPanel",
"\010\011ServiceProcessorClass1",
"\010\012ServiceProcessorClass2",
"\010\013ServiceProcessorClass3",
"\010\014GraphicAssist",
"\010\017SystemPlanar",
"\010\200OtherSystemPeripheral",
"\011\000KeyboardController",
"\011\001Digitizer",
"\011\002MouseController",
"\011\003TabletController",
"\011\0x80OtherInputController",
"\012\000GeneralMemoryController",
NULL
};
/* Device Interface Type Codes */
unsigned char * PnP_INTERFACES[] __initdata = {
"\000\000\000General",
"\001\000\000GeneralSCSI",
"\001\001\000GeneralIDE",
"\001\001\001ATACompatible",
"\001\002\000GeneralFloppy",
"\001\002\001Compatible765",
"\001\002\002NS398_Floppy", /* NS Super I/O wired to use index
register at port 398 and data
register at port 399 */
"\001\002\003NS26E_Floppy", /* Ports 26E and 26F */
"\001\002\004NS15C_Floppy", /* Ports 15C and 15D */
"\001\002\005NS2E_Floppy", /* Ports 2E and 2F */
"\001\002\006CHRP_Floppy", /* CHRP Floppy in PR*P system */
"\001\003\000GeneralIPI",
"\002\000\000GeneralEther",
"\002\001\000GeneralToken",
"\002\002\000GeneralFDDI",
"\003\000\000GeneralVGA",
"\003\001\000GeneralSVGA",
"\003\002\000GeneralXGA",
"\004\000\000GeneralVideo",
"\004\001\000GeneralAudio",
"\004\001\001CS4232Audio", /* CS 4232 Plug 'n Play Configured */
"\005\000\000GeneralRAM",
/* This one is obviously wrong ! */
"\005\000\000PCIMemoryController", /* PCI Config Method */
"\005\000\001RS6KMemoryController", /* RS6K Config Method */
"\005\001\000GeneralFLASH",
"\006\000\000GeneralHostBridge",
"\006\001\000GeneralISABridge",
"\006\002\000GeneralEISABridge",
"\006\003\000GeneralMCABridge",
/* GeneralPCIBridge = 0, */
"\006\004\000PCIBridgeDirect",
"\006\004\001PCIBridgeIndirect",
"\006\004\002PCIBridgeRS6K",
"\006\005\000GeneralPCMCIABridge",
"\006\006\000GeneralVMEBridge",
"\007\000\000GeneralRS232",
"\007\000\001COMx",
"\007\000\002Compatible16450",
"\007\000\003Compatible16550",
"\007\000\004NS398SerPort", /* NS Super I/O wired to use index
register at port 398 and data
register at port 399 */
"\007\000\005NS26ESerPort", /* Ports 26E and 26F */
"\007\000\006NS15CSerPort", /* Ports 15C and 15D */
"\007\000\007NS2ESerPort", /* Ports 2E and 2F */
"\007\001\000GeneralParPort",
"\007\001\001LPTx",
"\007\001\002NS398ParPort", /* NS Super I/O wired to use index
register at port 398 and data
register at port 399 */
"\007\001\003NS26EParPort", /* Ports 26E and 26F */
"\007\001\004NS15CParPort", /* Ports 15C and 15D */
"\007\001\005NS2EParPort", /* Ports 2E and 2F */
"\010\000\000GeneralPIC",
"\010\000\001ISA_PIC",
"\010\000\002EISA_PIC",
"\010\000\003MPIC",
"\010\000\004RS6K_PIC",
"\010\001\000GeneralDMA",
"\010\001\001ISA_DMA",
"\010\001\002EISA_DMA",
"\010\002\000GeneralTimer",
"\010\002\001ISA_Timer",
"\010\002\002EISA_Timer",
"\010\003\000GeneralRTC",
"\010\003\001ISA_RTC",
"\010\004\001StoreThruOnly",
"\010\004\002StoreInEnabled",
"\010\004\003RS6KL2Cache",
"\010\005\000IndirectNVRAM", /* Indirectly addressed */
"\010\005\001DirectNVRAM", /* Memory Mapped */
"\010\005\002IndirectNVRAM24", /* Indirectly addressed - 24 bit */
"\010\006\000GeneralPowerManagement",
"\010\006\001EPOWPowerManagement",
"\010\006\002PowerControl", // d1378
"\010\007\000GeneralCMOS",
"\010\010\000GeneralOPPanel",
"\010\010\001HarddiskLight",
"\010\010\002CDROMLight",
"\010\010\003PowerLight",
"\010\010\004KeyLock",
"\010\010\005ANDisplay", /* AlphaNumeric Display */
"\010\010\006SystemStatusLED", /* 3 digit 7 segment LED */
"\010\010\007CHRP_SystemStatusLED", /* CHRP LEDs in PR*P system */
"\010\011\000GeneralServiceProcessor",
"\010\012\000GeneralServiceProcessor",
"\010\013\000GeneralServiceProcessor",
"\010\014\001TransferData",
"\010\014\002IGMC32",
"\010\014\003IGMC64",
"\010\017\000GeneralSystemPlanar", /* 10/5/95 */
NULL
};
static const unsigned char __init *PnP_SUB_TYPE_STR(unsigned char BaseType,
unsigned char SubType) {
unsigned char ** s=PnP_SUB_TYPES;
while (*s && !((*s)[0]==BaseType
&& (*s)[1]==SubType)) s++;
if (*s) return *s+2;
else return("Unknown !");
};
static const unsigned char __init *PnP_INTERFACE_STR(unsigned char BaseType,
unsigned char SubType,
unsigned char Interface) {
unsigned char ** s=PnP_INTERFACES;
while (*s && !((*s)[0]==BaseType
&& (*s)[1]==SubType
&& (*s)[2]==Interface)) s++;
if (*s) return *s+3;
else return NULL;
};
static void __init printsmallvendor(PnP_TAG_PACKET *pkt, int size) {
int i, c;
char decomp[4];
#define p pkt->S14_Pack.S14_Data.S14_PPCPack
switch(p.Type) {
case 1:
/* Decompress first 3 chars */
c = *(unsigned short *)p.PPCData;
decomp[0]='A'-1+((c>>10)&0x1F);
decomp[1]='A'-1+((c>>5)&0x1F);
decomp[2]='A'-1+(c&0x1F);
decomp[3]=0;
printk(" Chip identification: %s%4.4X\n",
decomp, ld_le16((unsigned short *)(p.PPCData+2)));
break;
default:
printk(" Small vendor item type 0x%2.2x, data (hex): ",
p.Type);
for(i=0; i<size-2; i++) printk("%2.2x ", p.PPCData[i]);
printk("\n");
break;
}
#undef p
}
static void __init printsmallpacket(PnP_TAG_PACKET * pkt, int size) {
static const unsigned char * intlevel[] = {"high", "low"};
static const unsigned char * intsense[] = {"edge", "level"};
switch (tag_small_item_name(pkt->S1_Pack.Tag)) {
case PnPVersion:
printk(" PnPversion 0x%x.%x\n",
pkt->S1_Pack.Version[0], /* How to interpret version ? */
pkt->S1_Pack.Version[1]);
break;
// case Logicaldevice:
break;
// case CompatibleDevice:
break;
case IRQFormat:
#define p pkt->S4_Pack
printk(" IRQ Mask 0x%4.4x, %s %s sensitive\n",
ld_le16((unsigned short *)p.IRQMask),
intlevel[(size>3) ? !(p.IRQInfo&0x05) : 0],
intsense[(size>3) ? !(p.IRQInfo&0x03) : 0]);
#undef p
break;
case DMAFormat:
#define p pkt->S5_Pack
printk(" DMA channel mask 0x%2.2x, info 0x%2.2x\n",
p.DMAMask, p.DMAInfo);
#undef p
break;
case StartDepFunc:
printk("Start dependent function:\n");
break;
case EndDepFunc:
printk("End dependent function\n");
break;
case IOPort:
#define p pkt->S8_Pack
printk(" Variable (%d decoded bits) I/O port\n"
" from 0x%4.4x to 0x%4.4x, alignment %d, %d ports\n",
p.IOInfo&ISAAddr16bit?16:10,
ld_le16((unsigned short *)p.RangeMin),
ld_le16((unsigned short *)p.RangeMax),
p.IOAlign, p.IONum);
#undef p
break;
case FixedIOPort:
#define p pkt->S9_Pack
printk(" Fixed (10 decoded bits) I/O port from %3.3x to %3.3x\n",
(p.Range[1]<<8)|p.Range[0],
((p.Range[1]<<8)|p.Range[0])+p.IONum-1);
#undef p
break;
case Res1:
case Res2:
case Res3:
printk(" Undefined packet type %d!\n",
tag_small_item_name(pkt->S1_Pack.Tag));
break;
case SmallVendorItem:
printsmallvendor(pkt,size);
break;
default:
printk(" Type 0x2.2x%d, size=%d\n",
pkt->S1_Pack.Tag, size);
break;
}
}
static void __init printlargevendor(PnP_TAG_PACKET * pkt, int size) {
static const unsigned char * addrtype[] = {"I/O", "Memory", "System"};
static const unsigned char * inttype[] = {"8259", "MPIC", "RS6k BUID %d"};
static const unsigned char * convtype[] = {"Bus Memory", "Bus I/O", "DMA"};
static const unsigned char * transtype[] = {"direct", "mapped", "direct-store segment"};
static const unsigned char * L2type[] = {"WriteThru", "CopyBack"};
static const unsigned char * L2assoc[] = {"DirectMapped", "2-way set"};
int i;
char tmpstr[30], *t;
#define p pkt->L4_Pack.L4_Data.L4_PPCPack
switch(p.Type) {
case 2:
printk(" %d K %s %s L2 cache, %d/%d bytes line/sector size\n",
ld_le32((unsigned int *)p.PPCData),
L2type[p.PPCData[10]-1],
L2assoc[p.PPCData[4]-1],
ld_le16((unsigned short *)p.PPCData+3),
ld_le16((unsigned short *)p.PPCData+4));
break;
case 3:
printk(" PCI Bridge parameters\n"
" ConfigBaseAddress %0x\n"
" ConfigBaseData %0x\n"
" Bus number %d\n",
ld_le32((unsigned int *)p.PPCData),
ld_le32((unsigned int *)(p.PPCData+8)),
p.PPCData[16]);
for(i=20; i<size-4; i+=12) {
int j, first;
if(p.PPCData[i]) printk(" PCI Slot %d", p.PPCData[i]);
else printk (" Integrated PCI device");
for(j=0, first=1, t=tmpstr; j<4; j++) {
int line=ld_le16((unsigned short *)(p.PPCData+i+4)+j);
if(line!=0xffff){
if(first) first=0; else *t++='/';
*t++='A'+j;
}
}
*t='\0';
printk(" DevFunc 0x%x interrupt line(s) %s routed to",
p.PPCData[i+1],tmpstr);
sprintf(tmpstr,
inttype[p.PPCData[i+2]-1],
p.PPCData[i+3]);
printk(" %s line(s) ",
tmpstr);
for(j=0, first=1, t=tmpstr; j<4; j++) {
int line=ld_le16((unsigned short *)(p.PPCData+i+4)+j);
if(line!=0xffff){
if(first) first=0; else *t++='/';
t+=sprintf(t,"%d(%c)",
line&0x7fff,
line&0x8000?'E':'L');
}
}
printk("%s\n",tmpstr);
}
break;
case 5:
printk(" Bridge address translation, %s decoding:\n"
" Processor Bus Size Conversion Translation\n"
" 0x%8.8x 0x%8.8x 0x%8.8x %s %s\n",
p.PPCData[0]&1 ? "positive" : "subtractive",
ld_le32((unsigned int *)p.PPCData+1),
ld_le32((unsigned int *)p.PPCData+3),
ld_le32((unsigned int *)p.PPCData+5),
convtype[p.PPCData[2]-1],
transtype[p.PPCData[1]-1]);
break;
case 6:
printk(" Bus speed %d Hz, %d slot(s)\n",
ld_le32((unsigned int *)p.PPCData),
p.PPCData[4]);
break;
case 7:
printk(" SCSI buses: %d, id(s):", p.PPCData[0]);
for(i=1; i<=p.PPCData[0]; i++)
printk(" %d%c", p.PPCData[i], i==p.PPCData[0] ? '\n' : ',');
break;
case 9:
printk(" %s address (%d bits), at 0x%x size 0x%x bytes\n",
addrtype[p.PPCData[0]-1],
p.PPCData[1],
ld_le32((unsigned int *)(p.PPCData+4)),
ld_le32((unsigned int *)(p.PPCData+12)));
break;
case 10:
sprintf(tmpstr,
inttype[p.PPCData[0]-1],
p.PPCData[1]);
printk(" ISA interrupts routed to %s\n"
" lines",
tmpstr);
for(i=0; i<16; i++) {
int line=ld_le16((unsigned short *)p.PPCData+i+1);
if (line!=0xffff) printk(" %d(IRQ%d)", line, i);
}
printk("\n");
break;
default:
printk(" Large vendor item type 0x%2.2x\n Data (hex):",
p.Type);
for(i=0; i<size-4; i++) printk(" %2.2x", p.PPCData[i]);
printk("\n");
#undef p
}
}
static void __init printlargepacket(PnP_TAG_PACKET * pkt, int size) {
switch (tag_large_item_name(pkt->S1_Pack.Tag)) {
case LargeVendorItem:
printlargevendor(pkt, size);
break;
default:
printk(" Type 0x2.2x%d, size=%d\n",
pkt->S1_Pack.Tag, size);
break;
}
}
static void __init printpackets(PnP_TAG_PACKET * pkt, const char * cat)
{
if (pkt->S1_Pack.Tag== END_TAG) {
printk(" No packets describing %s resources.\n", cat);
return;
}
printk( " Packets describing %s resources:\n",cat);
do {
int size;
if (tag_type(pkt->S1_Pack.Tag)) {
size= 3 +
pkt->L1_Pack.Count0 +
pkt->L1_Pack.Count1*256;
printlargepacket(pkt, size);
} else {
size=tag_small_count(pkt->S1_Pack.Tag)+1;
printsmallpacket(pkt, size);
}
pkt = (PnP_TAG_PACKET *)((unsigned char *) pkt + size);
} while (pkt->S1_Pack.Tag != END_TAG);
}
void __init print_residual_device_info(void)
{
int i;
PPC_DEVICE *dev;
#define did dev->DeviceId
/* make sure we have residual data first */
if (!have_residual_data)
return;
printk("Residual: %ld devices\n", res->ActualNumDevices);
for ( i = 0;
i < res->ActualNumDevices ;
i++)
{
char decomp[4], sn[20];
const char * s;
dev = &res->Devices[i];
s = PnP_INTERFACE_STR(did.BaseType, did.SubType,
did.Interface);
if(!s) {
sprintf(sn, "interface %d", did.Interface);
s=sn;
}
if ( did.BusId & PCIDEVICE )
printk("PCI Device, Bus %d, DevFunc 0x%x:",
dev->BusAccess.PCIAccess.BusNumber,
dev->BusAccess.PCIAccess.DevFuncNumber);
if ( did.BusId & PNPISADEVICE ) printk("PNPISA Device:");
if ( did.BusId & ISADEVICE )
printk("ISA Device, Slot %d, LogicalDev %d:",
dev->BusAccess.ISAAccess.SlotNumber,
dev->BusAccess.ISAAccess.LogicalDevNumber);
if ( did.BusId & EISADEVICE ) printk("EISA Device:");
if ( did.BusId & PROCESSORDEVICE )
printk("ProcBus Device, Bus %d, BUID %d: ",
dev->BusAccess.ProcBusAccess.BusNumber,
dev->BusAccess.ProcBusAccess.BUID);
if ( did.BusId & PCMCIADEVICE ) printk("PCMCIA ");
if ( did.BusId & VMEDEVICE ) printk("VME ");
if ( did.BusId & MCADEVICE ) printk("MCA ");
if ( did.BusId & MXDEVICE ) printk("MX ");
/* Decompress first 3 chars */
decomp[0]='A'-1+((did.DevId>>26)&0x1F);
decomp[1]='A'-1+((did.DevId>>21)&0x1F);
decomp[2]='A'-1+((did.DevId>>16)&0x1F);
decomp[3]=0;
printk(" %s%4.4lX, %s, %s, %s\n",
decomp, did.DevId&0xffff,
PnP_BASE_TYPES[did.BaseType],
PnP_SUB_TYPE_STR(did.BaseType,did.SubType),
s);
if ( dev->AllocatedOffset )
printpackets( (union _PnP_TAG_PACKET *)
&res->DevicePnPHeap[dev->AllocatedOffset],
"allocated");
if ( dev->PossibleOffset )
printpackets( (union _PnP_TAG_PACKET *)
&res->DevicePnPHeap[dev->PossibleOffset],
"possible");
if ( dev->CompatibleOffset )
printpackets( (union _PnP_TAG_PACKET *)
&res->DevicePnPHeap[dev->CompatibleOffset],
"compatible");
}
}
#if 0
static void __init printVPD(void) {
#define vpd res->VitalProductData
int ps=vpd.PageSize, i, j;
static const char* Usage[]={
"FirmwareStack", "FirmwareHeap", "FirmwareCode", "BootImage",
"Free", "Unpopulated", "ISAAddr", "PCIConfig",
"IOMemory", "SystemIO", "SystemRegs", "PCIAddr",
"UnPopSystemRom", "SystemROM", "ResumeBlock", "Other"
};
static const unsigned char *FWMan[]={
"IBM", "Motorola", "FirmWorks", "Bull"
};
static const unsigned char *FWFlags[]={
"Conventional", "OpenFirmware", "Diagnostics", "LowDebug",
"MultiBoot", "LowClient", "Hex41", "FAT",
"ISO9660", "SCSI_ID_Override", "Tape_Boot", "FW_Boot_Path"
};
static const unsigned char *ESM[]={
"Port92", "PCIConfigA8", "FF001030", "????????"
};
static const unsigned char *SIOM[]={
"Port850", "????????", "PCIConfigA8", "????????"
};
printk("Model: %s\n",vpd.PrintableModel);
printk("Serial: %s\n", vpd.Serial);
printk("FirmwareSupplier: %s\n", FWMan[vpd.FirmwareSupplier]);
printk("FirmwareFlags:");
for(j=0; j<12; j++) {
if (vpd.FirmwareSupports & (1<<j)) {
printk(" %s%c", FWFlags[j],
vpd.FirmwareSupports&(-2<<j) ? ',' : '\n');
}
}
printk("NVRamSize: %ld\n", vpd.NvramSize);
printk("SIMMslots: %ld\n", vpd.NumSIMMSlots);
printk("EndianSwitchMethod: %s\n",
ESM[vpd.EndianSwitchMethod>2 ? 2 : vpd.EndianSwitchMethod]);
printk("SpreadIOMethod: %s\n",
SIOM[vpd.SpreadIOMethod>3 ? 3 : vpd.SpreadIOMethod]);
printk("Processor/Bus frequencies (Hz): %ld/%ld\n",
vpd.ProcessorHz, vpd.ProcessorBusHz);
printk("Time Base Divisor: %ld\n", vpd.TimeBaseDivisor);
printk("WordWidth, PageSize: %ld, %d\n", vpd.WordWidth, ps);
printk("Cache sector size, Lock granularity: %ld, %ld\n",
vpd.CoherenceBlockSize, vpd.GranuleSize);
for (i=0; i<res->ActualNumMemSegs; i++) {
int mask=res->Segs[i].Usage, first, j;
printk("%8.8lx-%8.8lx ",
res->Segs[i].BasePage*ps,
(res->Segs[i].PageCount+res->Segs[i].BasePage)*ps-1);
for(j=15, first=1; j>=0; j--) {
if (mask&(1<<j)) {
if (first) first=0;
else printk(", ");
printk("%s", Usage[j]);
}
}
printk("\n");
}
}
/*
* Spit out some info about residual data
*/
void print_residual_device_info(void)
{
int i;
union _PnP_TAG_PACKET *pkt;
PPC_DEVICE *dev;
#define did dev->DeviceId
/* make sure we have residual data first */
if (!have_residual_data)
return;
printk("Residual: %ld devices\n", res->ActualNumDevices);
for ( i = 0;
i < res->ActualNumDevices ;
i++)
{
dev = &res->Devices[i];
/*
* pci devices
*/
if ( did.BusId & PCIDEVICE )
{
printk("PCI Device:");
/* unknown vendor */
if ( !strncmp( "Unknown", pci_strvendor(did.DevId>>16), 7) )
printk(" id %08lx types %d/%d", did.DevId,
did.BaseType, did.SubType);
/* known vendor */
else
printk(" %s %s",
pci_strvendor(did.DevId>>16),
pci_strdev(did.DevId>>16,
did.DevId&0xffff)
);
if ( did.BusId & PNPISADEVICE )
{
printk(" pnp:");
/* get pnp info on the device */
pkt = (union _PnP_TAG_PACKET *)
&res->DevicePnPHeap[dev->AllocatedOffset];
for (; pkt->S1_Pack.Tag != DF_END_TAG;
pkt++ )
{
if ( (pkt->S1_Pack.Tag == S4_Packet) ||
(pkt->S1_Pack.Tag == S4_Packet_flags) )
printk(" irq %02x%02x",
pkt->S4_Pack.IRQMask[0],
pkt->S4_Pack.IRQMask[1]);
}
}
printk("\n");
continue;
}
/*
* isa devices
*/
if ( did.BusId & ISADEVICE )
{
printk("ISA Device: basetype: %d subtype: %d",
did.BaseType, did.SubType);
printk("\n");
continue;
}
/*
* eisa devices
*/
if ( did.BusId & EISADEVICE )
{
printk("EISA Device: basetype: %d subtype: %d",
did.BaseType, did.SubType);
printk("\n");
continue;
}
/*
* proc bus devices
*/
if ( did.BusId & PROCESSORDEVICE )
{
printk("ProcBus Device: basetype: %d subtype: %d",
did.BaseType, did.SubType);
printk("\n");
continue;
}
/*
* pcmcia devices
*/
if ( did.BusId & PCMCIADEVICE )
{
printk("PCMCIA Device: basetype: %d subtype: %d",
did.BaseType, did.SubType);
printk("\n");
continue;
}
printk("Unknown bus access device: busid %lx\n",
did.BusId);
}
}
#endif
/* Returns the device index in the residual data,
any of the search items may be set as -1 for wildcard,
DevID number field (second halfword) is big endian !
Examples:
- search for the Interrupt controller (8259 type), 2 methods:
1) i8259 = residual_find_device(~0,
NULL,
SystemPeripheral,
ProgrammableInterruptController,
ISA_PIC,
0);
2) i8259 = residual_find_device(~0, "PNP0000", -1, -1, -1, 0)
- search for the first two serial devices, whatever their type)
iserial1 = residual_find_device(~0,NULL,
CommunicationsDevice,
RS232Device,
-1, 0)
iserial2 = residual_find_device(~0,NULL,
CommunicationsDevice,
RS232Device,
-1, 1)
- but search for typical COM1 and COM2 is not easy due to the
fact that the interface may be anything and the name "PNP0500" or
"PNP0501". Quite bad.
*/
/* devid are easier to uncompress than to compress, so to minimize bloat
in this rarely used area we unencode and compare */
/* in residual data number is big endian in the device table and
little endian in the heap, so we use two parameters to avoid writing
two very similar functions */
static int __init same_DevID(unsigned short vendor,
unsigned short Number,
char * str)
{
static unsigned const char hexdigit[]="0123456789ABCDEF";
if (strlen(str)!=7) return 0;
if ( ( ((vendor>>10)&0x1f)+'A'-1 == str[0]) &&
( ((vendor>>5)&0x1f)+'A'-1 == str[1]) &&
( (vendor&0x1f)+'A'-1 == str[2]) &&
(hexdigit[(Number>>12)&0x0f] == str[3]) &&
(hexdigit[(Number>>8)&0x0f] == str[4]) &&
(hexdigit[(Number>>4)&0x0f] == str[5]) &&
(hexdigit[Number&0x0f] == str[6]) ) return 1;
return 0;
}
PPC_DEVICE __init *residual_find_device(unsigned long BusMask,
unsigned char * DevID,
int BaseType,
int SubType,
int Interface,
int n)
{
int i;
if (!have_residual_data) return NULL;
for (i=0; i<res->ActualNumDevices; i++) {
#define Dev res->Devices[i].DeviceId
if ( (Dev.BusId&BusMask) &&
(BaseType==-1 || Dev.BaseType==BaseType) &&
(SubType==-1 || Dev.SubType==SubType) &&
(Interface==-1 || Dev.Interface==Interface) &&
(DevID==NULL || same_DevID((Dev.DevId>>16)&0xffff,
Dev.DevId&0xffff, DevID)) &&
!(n--) ) return res->Devices+i;
#undef Dev
}
return NULL;
}
PPC_DEVICE __init *residual_find_device_id(unsigned long BusMask,
unsigned short DevID,
int BaseType,
int SubType,
int Interface,
int n)
{
int i;
if (!have_residual_data) return NULL;
for (i=0; i<res->ActualNumDevices; i++) {
#define Dev res->Devices[i].DeviceId
if ( (Dev.BusId&BusMask) &&
(BaseType==-1 || Dev.BaseType==BaseType) &&
(SubType==-1 || Dev.SubType==SubType) &&
(Interface==-1 || Dev.Interface==Interface) &&
(DevID==0xffff || (Dev.DevId&0xffff) == DevID) &&
!(n--) ) return res->Devices+i;
#undef Dev
}
return NULL;
}
static int __init
residual_scan_pcibridge(PnP_TAG_PACKET * pkt, struct pci_dev *dev)
{
int irq = -1;
#define data pkt->L4_Pack.L4_Data.L4_PPCPack.PPCData
if (dev->bus->number == data[16]) {
int i, size;
size = 3 + ld_le16((u_short *) (&pkt->L4_Pack.Count0));
for (i = 20; i < size - 4; i += 12) {
unsigned char pin;
int line_irq;
if (dev->devfn != data[i + 1])
continue;
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
if (pin) {
line_irq = ld_le16((unsigned short *)
(&data[i + 4 + 2 * (pin - 1)]));
irq = (line_irq == 0xffff) ? 0
: line_irq & 0x7fff;
} else
irq = 0;
break;
}
}
#undef data
return irq;
}
int __init
residual_pcidev_irq(struct pci_dev *dev)
{
int i = 0;
int irq = -1;
PPC_DEVICE *bridge;
while ((bridge = residual_find_device
(-1, NULL, BridgeController, PCIBridge, -1, i++))) {
PnP_TAG_PACKET *pkt;
if (bridge->AllocatedOffset) {
pkt = PnP_find_large_vendor_packet(res->DevicePnPHeap +
bridge->AllocatedOffset, 3, 0);
if (!pkt)
continue;
irq = residual_scan_pcibridge(pkt, dev);
if (irq != -1)
break;
}
}
return (irq < 0) ? 0 : irq;
}
void __init residual_irq_mask(char *irq_edge_mask_lo, char *irq_edge_mask_hi)
{
PPC_DEVICE *dev;
int i = 0;
unsigned short irq_mask = 0x000; /* default to edge */
while ((dev = residual_find_device(-1, NULL, -1, -1, -1, i++))) {
PnP_TAG_PACKET *pkt;
unsigned short mask;
int size;
int offset = dev->AllocatedOffset;
if (!offset)
continue;
pkt = PnP_find_packet(res->DevicePnPHeap + offset,
IRQFormat, 0);
if (!pkt)
continue;
size = tag_small_count(pkt->S1_Pack.Tag) + 1;
mask = ld_le16((unsigned short *)pkt->S4_Pack.IRQMask);
if (size > 3 && (pkt->S4_Pack.IRQInfo & 0x0c))
irq_mask |= mask;
}
*irq_edge_mask_lo = irq_mask & 0xff;
*irq_edge_mask_hi = irq_mask >> 8;
}
unsigned int __init residual_isapic_addr(void)
{
PPC_DEVICE *isapic;
PnP_TAG_PACKET *pkt;
unsigned int addr;
isapic = residual_find_device(~0, NULL, SystemPeripheral,
ProgrammableInterruptController,
ISA_PIC, 0);
if (!isapic)
goto unknown;
pkt = PnP_find_large_vendor_packet(res->DevicePnPHeap +
isapic->AllocatedOffset, 9, 0);
if (!pkt)
goto unknown;
#define p pkt->L4_Pack.L4_Data.L4_PPCPack
/* Must be 32-bit system address */
if (!((p.PPCData[0] == 3) && (p.PPCData[1] == 32)))
goto unknown;
/* It doesn't seem to work where length != 1 (what can I say? :-/ ) */
if (ld_le32((unsigned int *)(p.PPCData + 12)) != 1)
goto unknown;
addr = ld_le32((unsigned int *) (p.PPCData + 4));
#undef p
return addr;
unknown:
return 0;
}
PnP_TAG_PACKET *PnP_find_packet(unsigned char *p,
unsigned packet_tag,
int n)
{
unsigned mask, masked_tag, size;
if(!p) return NULL;
if (tag_type(packet_tag)) mask=0xff; else mask=0xF8;
masked_tag = packet_tag&mask;
for(; *p != END_TAG; p+=size) {
if ((*p & mask) == masked_tag && !(n--))
return (PnP_TAG_PACKET *) p;
if (tag_type(*p))
size=ld_le16((unsigned short *)(p+1))+3;
else
size=tag_small_count(*p)+1;
}
return NULL; /* not found */
}
PnP_TAG_PACKET __init *PnP_find_small_vendor_packet(unsigned char *p,
unsigned packet_type,
int n)
{
int next=0;
while (p) {
p = (unsigned char *) PnP_find_packet(p, 0x70, next);
if (p && p[1]==packet_type && !(n--))
return (PnP_TAG_PACKET *) p;
next = 1;
};
return NULL; /* not found */
}
PnP_TAG_PACKET __init *PnP_find_large_vendor_packet(unsigned char *p,
unsigned packet_type,
int n)
{
int next=0;
while (p) {
p = (unsigned char *) PnP_find_packet(p, 0x84, next);
if (p && p[3]==packet_type && !(n--))
return (PnP_TAG_PACKET *) p;
next = 1;
};
return NULL; /* not found */
}
#ifdef CONFIG_PROC_PREPRESIDUAL
static int proc_prep_residual_read(char * buf, char ** start, off_t off,
int count, int *eof, void *data)
{
int n;
n = res->ResidualLength - off;
if (n < 0) {
*eof = 1;
n = 0;
}
else {
if (n > count)
n = count;
else
*eof = 1;
memcpy(buf, (char *)res + off, n);
*start = buf;
}
return n;
}
int __init
proc_prep_residual_init(void)
{
if (have_residual_data)
create_proc_read_entry("residual", S_IRUGO, NULL,
proc_prep_residual_read, NULL);
return 0;
}
__initcall(proc_prep_residual_init);
#endif