residual.c

优龙2410linux2.6.8内核源代码

	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 ( res->ResidualLength == 0 )
		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 ( res->ResidualLength == 0 )
		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 ( !res->ResidualLength ) 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 ( !res->ResidualLength ) 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;
}

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 (res->ResidualLength)
		create_proc_read_entry("residual", S_IRUGO, NULL,
					proc_prep_residual_read, NULL);
	return 0;
}

__initcall(proc_prep_residual_init);
#endif