sysadmin/ipxe
1
0
Fork 0
mirror of https://github.com/ipxe/ipxe synced 2026-02-09 23:29:33 +03:00
Code Issues Packages Projects Releases Wiki Activity

[pci] Allow pci_find_next() to return non-zero PCI segments

Browse Source 
Separate the return status code from the returned PCI bus:dev.fn
address, in order to allow pci_find_next() to be used to find devices
with a non-zero PCI segment number.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2022-09-15 14:55:26 +01:00
parent 6459e3b7b1
commit 8fc3c26eae
3 changed files with 14 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
src/drivers/bus/pci.c
View File

@@ -229,9 +229,10 @@ int pci_read_config ( struct pci_device *pci ) {
*
* @v pci PCI device to fill in
* @v busdevfn Starting bus:dev.fn address
* @ret busdevfn Bus:dev.fn address of next PCI device, or negative error
* @ret busdevfn Bus:dev.fn address of next PCI device
* @ret rc Return status code
*/
int pci_find_next ( struct pci_device *pci, unsigned int busdevfn ) {
int pci_find_next ( struct pci_device *pci, uint32_t *busdevfn ) {
static unsigned int end;
unsigned int sub_end;
uint8_t hdrtype;
@@ -243,11 +244,11 @@ int pci_find_next ( struct pci_device *pci, unsigned int busdevfn ) {
end = PCI_BUSDEVFN ( 0, pci_num_bus(), 0, 0 );
/* Find next PCI device, if any */
for ( ; busdevfn < end ; busdevfn++ ) {
for ( ; *busdevfn < end ; (*busdevfn)++ ) {
/* Check for PCI device existence */
memset ( pci, 0, sizeof ( *pci ) );
pci_init ( pci, busdevfn );
pci_init ( pci, *busdevfn );
if ( ( rc = pci_read_config ( pci ) ) != 0 )
continue;
@@ -267,7 +268,7 @@ int pci_find_next ( struct pci_device *pci, unsigned int busdevfn ) {
}
/* Return this device */
return busdevfn;
return 0;
}
return -ENODEV;
@@ -348,7 +349,7 @@ void pci_remove ( struct pci_device *pci ) {
*/
static int pcibus_probe ( struct root_device *rootdev ) {
struct pci_device *pci = NULL;
int busdevfn = 0;
uint32_t busdevfn = 0;
int rc;
for ( busdevfn = 0 ; 1 ; busdevfn++ ) {
@@ -362,8 +363,7 @@ static int pcibus_probe ( struct root_device *rootdev ) {
}
/* Find next PCI device, if any */
busdevfn = pci_find_next ( pci, busdevfn );
if ( busdevfn < 0 )
if ( ( rc = pci_find_next ( pci, &busdevfn ) ) != 0 )
break;
/* Look for a driver */