minix3/lib/libsys/pci_get_bar.c

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2020-02-21 00:59:27 +05:30
/*
pci_get_bar.c
*/
#include "pci.h"
#include "syslib.h"
#include <minix/sysutil.h>
/*===========================================================================*
* pci_get_bar *
*===========================================================================*/
int pci_get_bar(devind, port, base, size, ioflag)
int devind;
int port;
u32_t *base;
u32_t *size;
int *ioflag;
{
int r;
message m;
m.m_type= BUSC_PCI_GET_BAR;
m.m_lsys_pci_busc_get_bar.devind = devind;
m.m_lsys_pci_busc_get_bar.port = port;
r= ipc_sendrec(pci_procnr, &m);
if (r != 0)
panic("pci_get_bar: can't talk to PCI: %d", r);
if (m.m_type == 0)
{
*base= m.m_pci_lsys_busc_get_bar.base;
*size= m.m_pci_lsys_busc_get_bar.size;
*ioflag= m.m_pci_lsys_busc_get_bar.flags;
}
return m.m_type;
}