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/**********************************************************************
*
* Copyright (C) Imagination Technologies Ltd. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful but, except
* as otherwise stated in writing, without any warranty; without even the
* implied warranty of merchantability or fitness for a particular purpose.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
* Contact Information:
* Imagination Technologies Ltd. <gpl-support@imgtec.com>
* Home Park Estate, Kings Langley, Herts, WD4 8LZ, UK
*
******************************************************************************/
#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <asm/system.h>
#include "pvr_drm_mod.h"
#define DRV_MSG_PREFIX_STR "pvr drm: "
#define SGX_VENDOR_ID 1
#define SGX_DEVICE_ID 1
#define SGX_SUB_VENDOR_ID 1
#define SGX_SUB_DEVICE_ID 1
#if defined(DEBUG)
#define DEBUG_PRINTK(format, args...) printk(format, ## args)
#else
#define DEBUG_PRINTK(format, args...)
#endif
#define CLEAR_STRUCT(x) memset(&(x), 0, sizeof(x))
static struct pci_bus pvr_pci_bus;
static struct pci_dev pvr_pci_dev;
static bool bDeviceIsRegistered;
static void
release_device(struct device *dev)
{
}
int
drm_pvr_dev_add(void)
{
int ret;
DEBUG_PRINTK(KERN_INFO DRV_MSG_PREFIX_STR "%s\n", __FUNCTION__);
if (bDeviceIsRegistered)
{
DEBUG_PRINTK(KERN_WARNING DRV_MSG_PREFIX_STR "%s: Device already registered\n", __FUNCTION__);
return 0;
}
pvr_pci_dev.vendor = SGX_VENDOR_ID;
pvr_pci_dev.device = SGX_DEVICE_ID;
pvr_pci_dev.subsystem_vendor = SGX_SUB_VENDOR_ID;
pvr_pci_dev.subsystem_device = SGX_SUB_DEVICE_ID;
pvr_pci_dev.bus = &pvr_pci_bus;
dev_set_name(&pvr_pci_dev.dev, "%s", "SGX");
pvr_pci_dev.dev.release = release_device;
ret = device_register(&pvr_pci_dev.dev);
if (ret != 0)
{
printk(KERN_ERR DRV_MSG_PREFIX_STR "%s: device_register failed (%d)\n", __FUNCTION__, ret);
}
bDeviceIsRegistered = true;
return ret;
}
EXPORT_SYMBOL(drm_pvr_dev_add);
void
drm_pvr_dev_remove(void)
{
DEBUG_PRINTK(KERN_INFO DRV_MSG_PREFIX_STR "%s\n", __FUNCTION__);
if (bDeviceIsRegistered)
{
DEBUG_PRINTK(KERN_INFO DRV_MSG_PREFIX_STR "%s: Unregistering device\n", __FUNCTION__);
device_unregister(&pvr_pci_dev.dev);
bDeviceIsRegistered = false;
CLEAR_STRUCT(pvr_pci_dev);
CLEAR_STRUCT(pvr_pci_bus);
}
else
{
DEBUG_PRINTK(KERN_WARNING DRV_MSG_PREFIX_STR "%s: Device not registered\n", __FUNCTION__);
}
}
EXPORT_SYMBOL(drm_pvr_dev_remove);
void
pci_disable_device(struct pci_dev *dev)
{
}
struct pci_dev *
pci_dev_get(struct pci_dev *dev)
{
return dev;
}
void
pci_set_master(struct pci_dev *dev)
{
}
#define PCI_ID_COMP(field, value) (((value) == PCI_ANY_ID) || \
((field) == (value)))
struct pci_dev *
pci_get_subsys(unsigned int vendor, unsigned int device,
unsigned int ss_vendor, unsigned int ss_device, struct pci_dev *from)
{
if (from == NULL &&
PCI_ID_COMP(pvr_pci_dev.vendor, vendor) &&
PCI_ID_COMP(pvr_pci_dev.device, device) &&
PCI_ID_COMP(pvr_pci_dev.subsystem_vendor, ss_vendor) &&
PCI_ID_COMP(pvr_pci_dev.subsystem_device, ss_device))
{
DEBUG_PRINTK(KERN_INFO DRV_MSG_PREFIX_STR "%s: Found %x %x %x %x\n", __FUNCTION__, vendor, device, ss_vendor, ss_device);
return &pvr_pci_dev;
}
if (from == NULL)
{
DEBUG_PRINTK(KERN_INFO DRV_MSG_PREFIX_STR "%s: Couldn't find %x %x %x %x\n", __FUNCTION__, vendor, device, ss_vendor, ss_device);
}
return NULL;
}
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,34))
int
pci_set_dma_mask(struct pci_dev *dev, u64 mask)
{
return 0;
}
#endif
void
pci_unregister_driver(struct pci_driver *drv)
{
}
int
__pci_register_driver(struct pci_driver *drv, struct module *owner,
const char *mod_name)
{
return 0;
}
int
pci_enable_device(struct pci_dev *dev)
{
return 0;
}
void
__bad_cmpxchg(volatile void *ptr, int size)
{
printk(KERN_ERR DRV_MSG_PREFIX_STR "%s: ptr %p size %u\n",
__FUNCTION__, ptr, size);
}
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