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2003-07-16 Greg Menke <gregory.menke@gsfc.nasa.gov>

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PR 428/bsps
	PR 432/bsps
	* pci/pcibios.c, pci/pcibios.h: Added BSP_pci_Find_Device() which
	is copied from motorola_shared.
This commit is contained in:
Joel Sherrill
2003-07-18 15:51:38 +00:00
parent 367a0e2089
commit 734d1c5da8
3 changed files with 74 additions and 0 deletions
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7
c/src/lib/libbsp/i386/shared/ChangeLog
View File

@@ -1,3 +1,10 @@
2003-07-16 Greg Menke <gregory.menke@gsfc.nasa.gov>
PR 428/bsps
PR 432/bsps
* pci/pcibios.c, pci/pcibios.h: Added BSP_pci_Find_Device() which
is copied from motorola_shared.
2003-03-18 Joel Sherrill <joel@OARcorp.com>
* comm/GDB.HOWTO: Updated.

63
c/src/lib/libbsp/i386/shared/pci/pcibios.c
View File

@@ -213,6 +213,69 @@ pcib_find_by_class(int classCode, int idx, int *sig)
#define PCI_MULTI_FUNCTION 0x80
#define PCI_MAX_DEVICES 16
#define PCI_MAX_FUNCTIONS 8
int
BSP_pciFindDevice( unsigned short vendorid, unsigned short deviceid,
int instance, int *pbus, int *pdev, int *pfun )
{
int sig;
unsigned int d;
unsigned short s;
unsigned char bus,dev,fun,hd;
for (bus=0; bus<BusCountPCI(); bus++)
{
for (dev=0; dev<PCI_MAX_DEVICES; dev++)
{
sig = PCIB_DEVSIG_MAKE(bus,dev,0);
/* pci_read_config_byte(bus,dev,0, PCI_HEADER_TYPE, &hd); */
pcib_conf_read8(sig, 0xe, &hd);
hd = (hd & PCI_MULTI_FUNCTION ? PCI_MAX_FUNCTIONS : 1);
for (fun=0; fun<hd; fun++) {
/*
* The last devfn id/slot is special; must skip it
*/
if( PCI_MAX_DEVICES-1 == dev && PCI_MAX_FUNCTIONS-1 == fun )
break;
/*pci_read_config_dword(bus,dev,fun,PCI_VENDOR_ID,&d); */
pcib_conf_read32(sig, 0, &d);
if( d == -1 )
continue;
#ifdef PCI_DEBUG
printk("BSP_pciFindDevice: found 0x%08x at %d/%d/%d\n",d,bus,dev,fun);
#endif
/* pci_read_config_word(bus,dev,fun,PCI_VENDOR_ID,&s); */
pcib_conf_read16(sig, 0, &s);
if (vendorid != s)
continue;
/* pci_read_config_word(bus,dev,fun,PCI_DEVICE_ID,&s); */
pcib_conf_read16(sig, 0x2, &s);
if (deviceid == s) {
if (instance--) continue;
*pbus=bus;
*pdev=dev;
*pfun=fun;
return 0;
}
}
}
}
return -1;
}
/*
* Generate Special Cycle
*/

4
c/src/lib/libbsp/i386/shared/pci/pcibios.h
View File

@@ -41,6 +41,10 @@ int pcib_conf_write8(int sig, int off, unsigned int data);
int pcib_conf_write16(int sig, int off, unsigned int data);
int pcib_conf_write32(int sig, int off, unsigned int data);
int
BSP_pciFindDevice( unsigned short vendorid, unsigned short deviceid,
int instance, int *pbus, int *pdev, int *pfun );
#endif /* _PCIB_H */