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/*
* The PCI Library -- User Access
*
* Copyright (c) 1997--2008 Martin Mares <mj@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include "internal.h"
void
pci_scan_bus(struct pci_access *a)
{
a->methods->scan(a);
}
struct pci_dev *
pci_alloc_dev(struct pci_access *a)
{
struct pci_dev *d = pci_malloc(a, sizeof(struct pci_dev));
memset(d, 0, sizeof(*d));
d->access = a;
d->methods = a->methods;
d->hdrtype = -1;
if (d->methods->init_dev)
d->methods->init_dev(d);
return d;
}
int
pci_link_dev(struct pci_access *a, struct pci_dev *d)
{
d->next = a->devices;
a->devices = d;
return 1;
}
struct pci_dev *
pci_get_dev(struct pci_access *a, int domain, int bus, int dev, int func)
{
struct pci_dev *d = pci_alloc_dev(a);
d->domain = domain;
d->bus = bus;
d->dev = dev;
d->func = func;
return d;
}
void pci_free_dev(struct pci_dev *d)
{
if (d->methods->cleanup_dev)
d->methods->cleanup_dev(d);
pci_free_caps(d);
pci_mfree(d);
}
static inline void
pci_read_data(struct pci_dev *d, void *buf, int pos, int len)
{
if (pos & (len-1))
d->access->error("Unaligned read: pos=%02x, len=%d", pos, len);
if (pos + len <= d->cache_len)
memcpy(buf, d->cache + pos, len);
else if (!d->methods->read(d, pos, buf, len))
memset(buf, 0xff, len);
}
byte
pci_read_byte(struct pci_dev *d, int pos)
{
byte buf;
pci_read_data(d, &buf, pos, 1);
return buf;
}
word
pci_read_word(struct pci_dev *d, int pos)
{
word buf;
pci_read_data(d, &buf, pos, 2);
return le16_to_cpu(buf);
}
u32
pci_read_long(struct pci_dev *d, int pos)
{
u32 buf;
pci_read_data(d, &buf, pos, 4);
return le32_to_cpu(buf);
}
int
pci_read_block(struct pci_dev *d, int pos, byte *buf, int len)
{
return d->methods->read(d, pos, buf, len);
}
int
pci_read_vpd(struct pci_dev *d, int pos, byte *buf, int len)
{
return d->methods->read_vpd ? d->methods->read_vpd(d, pos, buf, len) : 0;
}
static inline int
pci_write_data(struct pci_dev *d, void *buf, int pos, int len)
{
if (pos & (len-1))
d->access->error("Unaligned write: pos=%02x,len=%d", pos, len);
if (pos + len <= d->cache_len)
memcpy(d->cache + pos, buf, len);
return d->methods->write(d, pos, buf, len);
}
int
pci_write_byte(struct pci_dev *d, int pos, byte data)
{
return pci_write_data(d, &data, pos, 1);
}
int
pci_write_word(struct pci_dev *d, int pos, word data)
{
word buf = cpu_to_le16(data);
return pci_write_data(d, &buf, pos, 2);
}
int
pci_write_long(struct pci_dev *d, int pos, u32 data)
{
u32 buf = cpu_to_le32(data);
return pci_write_data(d, &buf, pos, 4);
}
int
pci_write_block(struct pci_dev *d, int pos, byte *buf, int len)
{
if (pos < d->cache_len)
{
int l = (pos + len >= d->cache_len) ? (d->cache_len - pos) : len;
memcpy(d->cache + pos, buf, l);
}
return d->methods->write(d, pos, buf, len);
}
int
pci_fill_info_v31(struct pci_dev *d, int flags)
{
if (flags & PCI_FILL_RESCAN)
{
flags &= ~PCI_FILL_RESCAN;
d->known_fields = 0;
pci_free_caps(d);
}
if (flags & ~d->known_fields)
d->known_fields |= d->methods->fill_info(d, flags & ~d->known_fields);
return d->known_fields;
}
/* In version 3.1, pci_fill_info got new flags => versioned alias */
STATIC_ALIAS(int pci_fill_info(struct pci_dev *d, int flags), pci_fill_info_v31(d,flags));
DEFINE_ALIAS(int pci_fill_info_v30(struct pci_dev *d, int flags), pci_fill_info_v31);
SYMBOL_VERSION(pci_fill_info_v30, pci_fill_info@LIBPCI_3.0);
SYMBOL_VERSION(pci_fill_info_v31, pci_fill_info@@LIBPCI_3.1);
void
pci_setup_cache(struct pci_dev *d, byte *cache, int len)
{
d->cache = cache;
d->cache_len = len;
}
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