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tegrakernel/kernel/kernel-4.9/drivers/isdn/hardware/eicon/divasmain.c

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initial commit tegra kernel 32.6.1
2022-02-16 09:13:02 -06:00
/* $Id: divasmain.c,v 1.55.4.6 2005/02/09 19:28:20 armin Exp $
*
* Low level driver for Eicon DIVA Server ISDN cards.
*
* Copyright 2000-2003 by Armin Schindler (mac@melware.de)
* Copyright 2000-2003 Cytronics & Melware (info@melware.de)
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/poll.h>
#include <linux/kmod.h>
#include "platform.h"
#undef ID_MASK
#undef N_DATA
#include "pc.h"
#include "di_defs.h"
#include "divasync.h"
#include "diva.h"
#include "di.h"
#include "io.h"
#include "xdi_msg.h"
#include "xdi_adapter.h"
#include "xdi_vers.h"
#include "diva_dma.h"
#include "diva_pci.h"
static char *main_revision = "$Revision: 1.55.4.6 $";
static int major;
static int dbgmask;
MODULE_DESCRIPTION("Kernel driver for Eicon DIVA Server cards");
MODULE_AUTHOR("Cytronics & Melware, Eicon Networks");
MODULE_LICENSE("GPL");
module_param(dbgmask, int, 0);
MODULE_PARM_DESC(dbgmask, "initial debug mask");
static char *DRIVERNAME =
"Eicon DIVA Server driver (http://www.melware.net)";
static char *DRIVERLNAME = "divas";
static char *DEVNAME = "Divas";
char *DRIVERRELEASE_DIVAS = "2.0";
extern irqreturn_t diva_os_irq_wrapper(int irq, void *context);
extern int create_divas_proc(void);
extern void remove_divas_proc(void);
extern void diva_get_vserial_number(PISDN_ADAPTER IoAdapter, char *buf);
extern int divasfunc_init(int dbgmask);
extern void divasfunc_exit(void);
typedef struct _diva_os_thread_dpc {
struct tasklet_struct divas_task;
diva_os_soft_isr_t *psoft_isr;
} diva_os_thread_dpc_t;
/* --------------------------------------------------------------------------
PCI driver interface section
-------------------------------------------------------------------------- */
/*
vendor, device Vendor and device ID to match (or PCI_ANY_ID)
subvendor, Subsystem vendor and device ID to match (or PCI_ANY_ID)
subdevice
class, Device class to match. The class_mask tells which bits
class_mask of the class are honored during the comparison.
driver_data Data private to the driver.
*/
#if !defined(PCI_DEVICE_ID_EICON_MAESTRAP_2)
#define PCI_DEVICE_ID_EICON_MAESTRAP_2 0xE015
#endif
#if !defined(PCI_DEVICE_ID_EICON_4BRI_VOIP)
#define PCI_DEVICE_ID_EICON_4BRI_VOIP 0xE016
#endif
#if !defined(PCI_DEVICE_ID_EICON_4BRI_2_VOIP)
#define PCI_DEVICE_ID_EICON_4BRI_2_VOIP 0xE017
#endif
#if !defined(PCI_DEVICE_ID_EICON_BRI2M_2)
#define PCI_DEVICE_ID_EICON_BRI2M_2 0xE018
#endif
#if !defined(PCI_DEVICE_ID_EICON_MAESTRAP_2_VOIP)
#define PCI_DEVICE_ID_EICON_MAESTRAP_2_VOIP 0xE019
#endif
#if !defined(PCI_DEVICE_ID_EICON_2F)
#define PCI_DEVICE_ID_EICON_2F 0xE01A
#endif
#if !defined(PCI_DEVICE_ID_EICON_BRI2M_2_VOIP)
#define PCI_DEVICE_ID_EICON_BRI2M_2_VOIP 0xE01B
#endif
/*
This table should be sorted by PCI device ID
*/
static struct pci_device_id divas_pci_tbl[] = {
/* Diva Server BRI-2M PCI 0xE010 */
{ PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRA),
CARDTYPE_MAESTRA_PCI },
/* Diva Server 4BRI-8M PCI 0xE012 */
{ PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRAQ),
CARDTYPE_DIVASRV_Q_8M_PCI },
/* Diva Server 4BRI-8M 2.0 PCI 0xE013 */
{ PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRAQ_U),
CARDTYPE_DIVASRV_Q_8M_V2_PCI },
/* Diva Server PRI-30M PCI 0xE014 */
{ PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRAP),
CARDTYPE_DIVASRV_P_30M_PCI },
/* Diva Server PRI 2.0 adapter 0xE015 */
{ PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRAP_2),
CARDTYPE_DIVASRV_P_30M_V2_PCI },
/* Diva Server Voice 4BRI-8M PCI 0xE016 */
{ PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_4BRI_VOIP),
CARDTYPE_DIVASRV_VOICE_Q_8M_PCI },
/* Diva Server Voice 4BRI-8M 2.0 PCI 0xE017 */
{ PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_4BRI_2_VOIP),
CARDTYPE_DIVASRV_VOICE_Q_8M_V2_PCI },
/* Diva Server BRI-2M 2.0 PCI 0xE018 */
{ PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_BRI2M_2),
CARDTYPE_DIVASRV_B_2M_V2_PCI },
/* Diva Server Voice PRI 2.0 PCI 0xE019 */
{ PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_MAESTRAP_2_VOIP),
CARDTYPE_DIVASRV_VOICE_P_30M_V2_PCI },
/* Diva Server 2FX 0xE01A */
{ PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_2F),
CARDTYPE_DIVASRV_B_2F_PCI },
/* Diva Server Voice BRI-2M 2.0 PCI 0xE01B */
{ PCI_VDEVICE(EICON, PCI_DEVICE_ID_EICON_BRI2M_2_VOIP),
CARDTYPE_DIVASRV_VOICE_B_2M_V2_PCI },
{ 0, } /* 0 terminated list. */
};
MODULE_DEVICE_TABLE(pci, divas_pci_tbl);
static int divas_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent);
static void divas_remove_one(struct pci_dev *pdev);
static struct pci_driver diva_pci_driver = {
.name = "divas",
.probe = divas_init_one,
.remove = divas_remove_one,
.id_table = divas_pci_tbl,
};
/*********************************************************
** little helper functions
*********************************************************/
static char *getrev(const char *revision)
{
char *rev;
char *p;
if ((p = strchr(revision, ':'))) {
rev = p + 2;
p = strchr(rev, '$');
*--p = 0;
} else
rev = "1.0";
return rev;
}
void diva_log_info(unsigned char *format, ...)
{
va_list args;
unsigned char line[160];
va_start(args, format);
vsnprintf(line, sizeof(line), format, args);
va_end(args);
printk(KERN_INFO "%s: %s\n", DRIVERLNAME, line);
}
void divas_get_version(char *p)
{
char tmprev[32];
strcpy(tmprev, main_revision);
sprintf(p, "%s: %s(%s) %s(%s) major=%d\n", DRIVERLNAME, DRIVERRELEASE_DIVAS,
getrev(tmprev), diva_xdi_common_code_build, DIVA_BUILD, major);
}
/* --------------------------------------------------------------------------
PCI Bus services
-------------------------------------------------------------------------- */
byte diva_os_get_pci_bus(void *pci_dev_handle)
{
struct pci_dev *pdev = (struct pci_dev *) pci_dev_handle;
return ((byte) pdev->bus->number);
}
byte diva_os_get_pci_func(void *pci_dev_handle)
{
struct pci_dev *pdev = (struct pci_dev *) pci_dev_handle;
return ((byte) pdev->devfn);
}
unsigned long divasa_get_pci_irq(unsigned char bus, unsigned char func,
void *pci_dev_handle)
{
unsigned char irq = 0;
struct pci_dev *dev = (struct pci_dev *) pci_dev_handle;
irq = dev->irq;
return ((unsigned long) irq);
}
unsigned long divasa_get_pci_bar(unsigned char bus, unsigned char func,
int bar, void *pci_dev_handle)
{
unsigned long ret = 0;
struct pci_dev *dev = (struct pci_dev *) pci_dev_handle;
if (bar < 6) {
ret = dev->resource[bar].start;
}
DBG_TRC(("GOT BAR[%d]=%08x", bar, ret));
{
unsigned long type = (ret & 0x00000001);
if (type & PCI_BASE_ADDRESS_SPACE_IO) {
DBG_TRC((" I/O"));
ret &= PCI_BASE_ADDRESS_IO_MASK;
} else {
DBG_TRC((" memory"));
ret &= PCI_BASE_ADDRESS_MEM_MASK;
}
DBG_TRC((" final=%08x", ret));
}
return (ret);
}
void PCIwrite(byte bus, byte func, int offset, void *data, int length,
void *pci_dev_handle)
{
struct pci_dev *dev = (struct pci_dev *) pci_dev_handle;
switch (length) {
case 1: /* byte */
pci_write_config_byte(dev, offset,
*(unsigned char *) data);
break;
case 2: /* word */
pci_write_config_word(dev, offset,
*(unsigned short *) data);
break;
case 4: /* dword */
pci_write_config_dword(dev, offset,
*(unsigned int *) data);
break;
default: /* buffer */
if (!(length % 4) && !(length & 0x03)) { /* Copy as dword */
dword *p = (dword *) data;
length /= 4;
while (length--) {
pci_write_config_dword(dev, offset,
*(unsigned int *)
p++);
}
} else { /* copy as byte stream */
byte *p = (byte *) data;
while (length--) {
pci_write_config_byte(dev, offset,
*(unsigned char *)
p++);
}
}
}
}
void PCIread(byte bus, byte func, int offset, void *data, int length,
void *pci_dev_handle)
{
struct pci_dev *dev = (struct pci_dev *) pci_dev_handle;
switch (length) {
case 1: /* byte */
pci_read_config_byte(dev, offset, (unsigned char *) data);
break;
case 2: /* word */
pci_read_config_word(dev, offset, (unsigned short *) data);
break;
case 4: /* dword */
pci_read_config_dword(dev, offset, (unsigned int *) data);
break;
default: /* buffer */
if (!(length % 4) && !(length & 0x03)) { /* Copy as dword */
dword *p = (dword *) data;
length /= 4;
while (length--) {
pci_read_config_dword(dev, offset,
(unsigned int *)
p++);
}
} else { /* copy as byte stream */
byte *p = (byte *) data;
while (length--) {
pci_read_config_byte(dev, offset,
(unsigned char *)
p++);
}
}
}
}
/*
Init map with DMA pages. It is not problem if some allocations fail -
the channels that will not get one DMA page will use standard PIO
interface
*/
static void *diva_pci_alloc_consistent(struct pci_dev *hwdev,
size_t size,
dma_addr_t *dma_handle,
void **addr_handle)
{
void *addr = pci_alloc_consistent(hwdev, size, dma_handle);
*addr_handle = addr;
return (addr);
}
void diva_init_dma_map(void *hdev,
struct _diva_dma_map_entry **ppmap, int nentries)
{
struct pci_dev *pdev = (struct pci_dev *) hdev;
struct _diva_dma_map_entry *pmap =
diva_alloc_dma_map(hdev, nentries);
if (pmap) {
int i;
dma_addr_t dma_handle;
void *cpu_addr;
void *addr_handle;
for (i = 0; i < nentries; i++) {
if (!(cpu_addr = diva_pci_alloc_consistent(pdev,
PAGE_SIZE,
&dma_handle,
&addr_handle)))
{
break;
}
diva_init_dma_map_entry(pmap, i, cpu_addr,
(dword) dma_handle,
addr_handle);
DBG_TRC(("dma map alloc [%d]=(%08lx:%08x:%08lx)",
i, (unsigned long) cpu_addr,
(dword) dma_handle,
(unsigned long) addr_handle))}
}
*ppmap = pmap;
}
/*
Free all contained in the map entries and memory used by the map
Should be always called after adapter removal from DIDD array
*/
void diva_free_dma_map(void *hdev, struct _diva_dma_map_entry *pmap)
{
struct pci_dev *pdev = (struct pci_dev *) hdev;
int i;
dword phys_addr;
void *cpu_addr;
dma_addr_t dma_handle;
void *addr_handle;
for (i = 0; (pmap != NULL); i++) {
diva_get_dma_map_entry(pmap, i, &cpu_addr, &phys_addr);
if (!cpu_addr) {
break;
}
addr_handle = diva_get_entry_handle(pmap, i);
dma_handle = (dma_addr_t) phys_addr;
pci_free_consistent(pdev, PAGE_SIZE, addr_handle,
dma_handle);
DBG_TRC(("dma map free [%d]=(%08lx:%08x:%08lx)", i,
(unsigned long) cpu_addr, (dword) dma_handle,
(unsigned long) addr_handle))
}
diva_free_dma_mapping(pmap);
}
/*********************************************************
** I/O port utilities
*********************************************************/
int
diva_os_register_io_port(void *adapter, int on, unsigned long port,
unsigned long length, const char *name, int id)
{
if (on) {
if (!request_region(port, length, name)) {
DBG_ERR(("A: I/O: can't register port=%08x", port))
return (-1);
}
} else {
release_region(port, length);
}
return (0);
}
void __iomem *divasa_remap_pci_bar(diva_os_xdi_adapter_t *a, int id, unsigned long bar, unsigned long area_length)
{
void __iomem *ret = ioremap(bar, area_length);
DBG_TRC(("remap(%08x)->%p", bar, ret));
return (ret);
}
void divasa_unmap_pci_bar(void __iomem *bar)
{
if (bar) {
iounmap(bar);
}
}
/*********************************************************
** I/O port access
*********************************************************/
inline byte inpp(void __iomem *addr)
{
return (inb((unsigned long) addr));
}
inline word inppw(void __iomem *addr)
{
return (inw((unsigned long) addr));
}
inline void inppw_buffer(void __iomem *addr, void *P, int length)
{
insw((unsigned long) addr, (word *) P, length >> 1);
}
inline void outppw_buffer(void __iomem *addr, void *P, int length)
{
outsw((unsigned long) addr, (word *) P, length >> 1);
}
inline void outppw(void __iomem *addr, word w)
{
outw(w, (unsigned long) addr);
}
inline void outpp(void __iomem *addr, word p)
{
outb(p, (unsigned long) addr);
}
/* --------------------------------------------------------------------------
IRQ request / remove
-------------------------------------------------------------------------- */
int diva_os_register_irq(void *context, byte irq, const char *name)
{
int result = request_irq(irq, diva_os_irq_wrapper,
IRQF_SHARED, name, context);
return (result);
}
void diva_os_remove_irq(void *context, byte irq)
{
free_irq(irq, context);
}
/* --------------------------------------------------------------------------
DPC framework implementation
-------------------------------------------------------------------------- */
static void diva_os_dpc_proc(unsigned long context)
{
diva_os_thread_dpc_t *psoft_isr = (diva_os_thread_dpc_t *) context;
diva_os_soft_isr_t *pisr = psoft_isr->psoft_isr;
(*(pisr->callback)) (pisr, pisr->callback_context);
}
int diva_os_initialize_soft_isr(diva_os_soft_isr_t *psoft_isr,
diva_os_soft_isr_callback_t callback,
void *callback_context)
{
diva_os_thread_dpc_t *pdpc;
pdpc = (diva_os_thread_dpc_t *) diva_os_malloc(0, sizeof(*pdpc));
if (!(psoft_isr->object = pdpc)) {
return (-1);
}
memset(pdpc, 0x00, sizeof(*pdpc));
psoft_isr->callback = callback;
psoft_isr->callback_context = callback_context;
pdpc->psoft_isr = psoft_isr;
tasklet_init(&pdpc->divas_task, diva_os_dpc_proc, (unsigned long)pdpc);
return (0);
}
int diva_os_schedule_soft_isr(diva_os_soft_isr_t *psoft_isr)
{
if (psoft_isr && psoft_isr->object) {
diva_os_thread_dpc_t *pdpc =
(diva_os_thread_dpc_t *) psoft_isr->object;
tasklet_schedule(&pdpc->divas_task);
}
return (1);
}
int diva_os_cancel_soft_isr(diva_os_soft_isr_t *psoft_isr)
{
return (0);
}
void diva_os_remove_soft_isr(diva_os_soft_isr_t *psoft_isr)
{
if (psoft_isr && psoft_isr->object) {
diva_os_thread_dpc_t *pdpc =
(diva_os_thread_dpc_t *) psoft_isr->object;
void *mem;
tasklet_kill(&pdpc->divas_task);
mem = psoft_isr->object;
psoft_isr->object = NULL;
diva_os_free(0, mem);
}
}
/*
* kernel/user space copy functions
*/
static int
xdi_copy_to_user(void *os_handle, void __user *dst, const void *src, int length)
{
if (copy_to_user(dst, src, length)) {
return (-EFAULT);
}
return (length);
}
static int
xdi_copy_from_user(void *os_handle, void *dst, const void __user *src, int length)
{
if (copy_from_user(dst, src, length)) {
return (-EFAULT);
}
return (length);
}
/*
* device node operations
*/
static int divas_open(struct inode *inode, struct file *file)
{
return (0);
}
static int divas_release(struct inode *inode, struct file *file)
{
if (file->private_data) {
diva_xdi_close_adapter(file->private_data, file);
}
return (0);
}
static ssize_t divas_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
diva_xdi_um_cfg_cmd_t msg;
int ret = -EINVAL;
if (!file->private_data) {
file->private_data = diva_xdi_open_adapter(file, buf,
count, &msg,
xdi_copy_from_user);
if (!file->private_data)
return (-ENODEV);
ret = diva_xdi_write(file->private_data, file,
buf, count, &msg, xdi_copy_from_user);
} else {
ret = diva_xdi_write(file->private_data, file,
buf, count, NULL, xdi_copy_from_user);
}
switch (ret) {
case -1: /* Message should be removed from rx mailbox first */
ret = -EBUSY;
break;
case -2: /* invalid adapter was specified in this call */
ret = -ENOMEM;
break;
case -3:
ret = -ENXIO;
break;
}
DBG_TRC(("write: ret %d", ret));
return (ret);
}
static ssize_t divas_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
diva_xdi_um_cfg_cmd_t msg;
int ret = -EINVAL;
if (!file->private_data) {
file->private_data = diva_xdi_open_adapter(file, buf,
count, &msg,
xdi_copy_from_user);
}
if (!file->private_data) {
return (-ENODEV);
}
ret = diva_xdi_read(file->private_data, file,
buf, count, xdi_copy_to_user);
switch (ret) {
case -1: /* RX mailbox is empty */
ret = -EAGAIN;
break;
case -2: /* no memory, mailbox was cleared, last command is failed */
ret = -ENOMEM;
break;
case -3: /* can't copy to user, retry */
ret = -EFAULT;
break;
}
DBG_TRC(("read: ret %d", ret));
return (ret);
}
static unsigned int divas_poll(struct file *file, poll_table *wait)
{
if (!file->private_data) {
return (POLLERR);
}
return (POLLIN | POLLRDNORM);
}
static const struct file_operations divas_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.read = divas_read,
.write = divas_write,
.poll = divas_poll,
.open = divas_open,
.release = divas_release
};
static void divas_unregister_chrdev(void)
{
unregister_chrdev(major, DEVNAME);
}
static int __init divas_register_chrdev(void)
{
if ((major = register_chrdev(0, DEVNAME, &divas_fops)) < 0)
{
printk(KERN_ERR "%s: failed to create /dev entry.\n",
DRIVERLNAME);
return (0);
}
return (1);
}
/* --------------------------------------------------------------------------
PCI driver section
-------------------------------------------------------------------------- */
static int divas_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
void *pdiva = NULL;
u8 pci_latency;
u8 new_latency = 32;
DBG_TRC(("%s bus: %08x fn: %08x insertion.\n",
CardProperties[ent->driver_data].Name,
pdev->bus->number, pdev->devfn))
printk(KERN_INFO "%s: %s bus: %08x fn: %08x insertion.\n",
DRIVERLNAME, CardProperties[ent->driver_data].Name,
pdev->bus->number, pdev->devfn);
if (pci_enable_device(pdev)) {
DBG_TRC(("%s: %s bus: %08x fn: %08x device init failed.\n",
DRIVERLNAME,
CardProperties[ent->driver_data].Name,
pdev->bus->number,
pdev->devfn))
printk(KERN_ERR
"%s: %s bus: %08x fn: %08x device init failed.\n",
DRIVERLNAME,
CardProperties[ent->driver_data].
Name, pdev->bus->number,
pdev->devfn);
return (-EIO);
}
pci_set_master(pdev);
pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &pci_latency);
if (!pci_latency) {
DBG_TRC(("%s: bus: %08x fn: %08x fix latency.\n",
DRIVERLNAME, pdev->bus->number, pdev->devfn))
printk(KERN_INFO
"%s: bus: %08x fn: %08x fix latency.\n",
DRIVERLNAME, pdev->bus->number, pdev->devfn);
pci_write_config_byte(pdev, PCI_LATENCY_TIMER, new_latency);
}
if (!(pdiva = diva_driver_add_card(pdev, ent->driver_data))) {
DBG_TRC(("%s: %s bus: %08x fn: %08x card init failed.\n",
DRIVERLNAME,
CardProperties[ent->driver_data].Name,
pdev->bus->number,
pdev->devfn))
printk(KERN_ERR
"%s: %s bus: %08x fn: %08x card init failed.\n",
DRIVERLNAME,
CardProperties[ent->driver_data].
Name, pdev->bus->number,
pdev->devfn);
return (-EIO);
}
pci_set_drvdata(pdev, pdiva);
return (0);
}
static void divas_remove_one(struct pci_dev *pdev)
{
void *pdiva = pci_get_drvdata(pdev);
DBG_TRC(("bus: %08x fn: %08x removal.\n",
pdev->bus->number, pdev->devfn))
printk(KERN_INFO "%s: bus: %08x fn: %08x removal.\n",
DRIVERLNAME, pdev->bus->number, pdev->devfn);
if (pdiva) {
diva_driver_remove_card(pdiva);
}
}
/* --------------------------------------------------------------------------
Driver Load / Startup
-------------------------------------------------------------------------- */
static int __init divas_init(void)
{
char tmprev[50];
int ret = 0;
printk(KERN_INFO "%s\n", DRIVERNAME);
printk(KERN_INFO "%s: Rel:%s Rev:", DRIVERLNAME, DRIVERRELEASE_DIVAS);
strcpy(tmprev, main_revision);
printk("%s Build: %s(%s)\n", getrev(tmprev),
diva_xdi_common_code_build, DIVA_BUILD);
printk(KERN_INFO "%s: support for: ", DRIVERLNAME);
#ifdef CONFIG_ISDN_DIVAS_BRIPCI
printk("BRI/PCI ");
#endif
#ifdef CONFIG_ISDN_DIVAS_PRIPCI
printk("PRI/PCI ");
#endif
printk("adapters\n");
if (!divasfunc_init(dbgmask)) {
printk(KERN_ERR "%s: failed to connect to DIDD.\n",
DRIVERLNAME);
ret = -EIO;
goto out;
}
if (!divas_register_chrdev()) {
#ifdef MODULE
divasfunc_exit();
#endif
ret = -EIO;
goto out;
}
if (!create_divas_proc()) {
#ifdef MODULE
divas_unregister_chrdev();
divasfunc_exit();
#endif
printk(KERN_ERR "%s: failed to create proc entry.\n",
DRIVERLNAME);
ret = -EIO;
goto out;
}
if ((ret = pci_register_driver(&diva_pci_driver))) {
#ifdef MODULE
remove_divas_proc();
divas_unregister_chrdev();
divasfunc_exit();
#endif
printk(KERN_ERR "%s: failed to init pci driver.\n",
DRIVERLNAME);
goto out;
}
printk(KERN_INFO "%s: started with major %d\n", DRIVERLNAME, major);
out:
return (ret);
}
/* --------------------------------------------------------------------------
Driver Unload
-------------------------------------------------------------------------- */
static void __exit divas_exit(void)
{
pci_unregister_driver(&diva_pci_driver);
remove_divas_proc();
divas_unregister_chrdev();
divasfunc_exit();
printk(KERN_INFO "%s: module unloaded.\n", DRIVERLNAME);
}
module_init(divas_init);
module_exit(divas_exit);