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path: root/os/various/chrtclib.h

	Commit message (Expand)	Author	Age	Files	Lines
*	git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@4276 35acf78f-673a-0410...	gdisirio	2012-06-14	1	-6/+6
*	chrtclib. Added forgotten prototype.	barthess	2012-05-19	1	-0/+1
*	SDC. Merged code from development branch.	barthess	2012-04-17	1	-0/+0
*	RTC. High level staff moved to chrtclib.	barthess	2012-03-09	1	-0/+56

generated by cgit v1.2.3 (git 2.25.1) at 2026-01-09 04:51:02 +0000

/******************************************************************************
 * pci.c
 * 
 * Architecture-dependent PCI access functions.
 */

#include <xen/spinlock.h>
#include <xen/pci.h>
#include <xen/init.h>
#include <asm/io.h>

#define PCI_CONF_ADDRESS(bus, dev, func, reg) \
    (0x80000000 | (bus << 16) | (dev << 11) | (func << 8) | (reg & ~3))

uint8_t pci_conf_read8(
    unsigned int seg, unsigned int bus, unsigned int dev, unsigned int func,
    unsigned int reg)
{
    if ( seg || (reg > 255) )
        return ~0;
    BUG_ON((bus > 255) || (dev > 31) || (func > 7));
    return pci_conf_read(PCI_CONF_ADDRESS(bus, dev, func, reg), reg & 3, 1);
}

uint16_t pci_conf_read16(
    unsigned int seg, unsigned int bus, unsigned int dev, unsigned int func,
    unsigned int reg)
{
    if ( seg || (reg > 255) )
        return ~0;
    BUG_ON((bus > 255) || (dev > 31) || (func > 7));
    return pci_conf_read(PCI_CONF_ADDRESS(bus, dev, func, reg), reg & 2, 2);
}

uint32_t pci_conf_read32(
    unsigned int seg, unsigned int bus, unsigned int dev, unsigned int func,
    unsigned int reg)
{
    if ( seg || (reg > 255) )
        return ~0;
    BUG_ON((bus > 255) || (dev > 31) || (func > 7));
    return pci_conf_read(PCI_CONF_ADDRESS(bus, dev, func, reg), 0, 4);
}

void pci_conf_write8(
    unsigned int seg, unsigned int bus, unsigned int dev, unsigned int func,
    unsigned int reg, uint8_t data)
{
    if ( seg )
        return;
    BUG_ON((bus > 255) || (dev > 31) || (func > 7) || (reg > 255));
    pci_conf_write(PCI_CONF_ADDRESS(bus, dev, func, reg), reg & 3, 1, data);
}

void pci_conf_write16(
    unsigned int seg, unsigned int bus, unsigned int dev, unsigned int func,
    unsigned int reg, uint16_t data)
{
    if ( seg )
        return;
    BUG_ON((bus > 255) || (dev > 31) || (func > 7) || (reg > 255));
    pci_conf_write(PCI_CONF_ADDRESS(bus, dev, func, reg), reg & 2, 2, data);
}

void pci_conf_write32(
    unsigned int seg, unsigned int bus, unsigned int dev, unsigned int func,
    unsigned int reg, uint32_t data)
{
    if ( seg )
        return;
    BUG_ON((bus > 255) || (dev > 31) || (func > 7) || (reg > 255));
    pci_conf_write(PCI_CONF_ADDRESS(bus, dev, func, reg), 0, 4, data);
}

void __init arch_pci_ro_device(int seg, int bdf)
{
}