https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: 427abfa28afedffadfca9dd8b067eb6d36bac53f authored by Linus Torvalds on 18 June 2006, 01:49:35 UTC
Linux v2.6.17
Linux v2.6.17
Tip revision: 427abfa
ops-mace.c
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2000, 2001 Keith M Wesolowski
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/types.h>
#include <asm/pci.h>
#include <asm/ip32/mace.h>
#if 0
# define DPRINTK(args...) printk(args);
#else
# define DPRINTK(args...)
#endif
/*
* O2 has up to 5 PCI devices connected into the MACE bridge. The device
* map looks like this:
*
* 0 aic7xxx 0
* 1 aic7xxx 1
* 2 expansion slot
* 3 N/C
* 4 N/C
*/
#define chkslot(_bus,_devfn) \
do { \
if ((_bus)->number > 0 || PCI_SLOT (_devfn) < 1 \
|| PCI_SLOT (_devfn) > 3) \
return PCIBIOS_DEVICE_NOT_FOUND; \
} while (0)
#define mkaddr(_devfn, _reg) \
((((_devfn) & 0xffUL) << 8) | ((_reg) & 0xfcUL))
static int
mace_pci_read_config(struct pci_bus *bus, unsigned int devfn,
int reg, int size, u32 *val)
{
chkslot(bus, devfn);
mace->pci.config_addr = mkaddr(devfn, reg);
switch (size) {
case 1:
*val = mace->pci.config_data.b[(reg & 3) ^ 3];
break;
case 2:
*val = mace->pci.config_data.w[((reg >> 1) & 1) ^ 1];
break;
case 4:
*val = mace->pci.config_data.l;
break;
}
DPRINTK("read%d: reg=%08x,val=%02x\n", size * 8, reg, *val);
return PCIBIOS_SUCCESSFUL;
}
static int
mace_pci_write_config(struct pci_bus *bus, unsigned int devfn,
int reg, int size, u32 val)
{
chkslot(bus, devfn);
mace->pci.config_addr = mkaddr(devfn, reg);
switch (size) {
case 1:
mace->pci.config_data.b[(reg & 3) ^ 3] = val;
break;
case 2:
mace->pci.config_data.w[((reg >> 1) & 1) ^ 1] = val;
break;
case 4:
mace->pci.config_data.l = val;
break;
}
DPRINTK("write%d: reg=%08x,val=%02x\n", size * 8, reg, val);
return PCIBIOS_SUCCESSFUL;
}
struct pci_ops mace_pci_ops = {
.read = mace_pci_read_config,
.write = mace_pci_write_config,
};