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android_kernel_xiaomi_sm8350/drivers/isdn/hardware/eicon/divasmain.c
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00

852 lines
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/* $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 <linux/sched.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <linux/ioport.h>
#include <linux/workqueue.h>
#include <linux/pci.h>
#include <linux/smp_lock.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_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_MAESTRA,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_MAESTRA_PCI},
/* Diva Server 4BRI-8M PCI 0xE012 */
{PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_MAESTRAQ,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_DIVASRV_Q_8M_PCI},
/* Diva Server 4BRI-8M 2.0 PCI 0xE013 */
{PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_MAESTRAQ_U,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_DIVASRV_Q_8M_V2_PCI},
/* Diva Server PRI-30M PCI 0xE014 */
{PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_MAESTRAP,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_DIVASRV_P_30M_PCI},
/* Diva Server PRI 2.0 adapter 0xE015 */
{PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_MAESTRAP_2,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_DIVASRV_P_30M_V2_PCI},
/* Diva Server Voice 4BRI-8M PCI 0xE016 */
{PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_4BRI_VOIP,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_DIVASRV_VOICE_Q_8M_PCI},
/* Diva Server Voice 4BRI-8M 2.0 PCI 0xE017 */
{PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_4BRI_2_VOIP,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_DIVASRV_VOICE_Q_8M_V2_PCI},
/* Diva Server BRI-2M 2.0 PCI 0xE018 */
{PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_BRI2M_2,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_DIVASRV_B_2M_V2_PCI},
/* Diva Server Voice PRI 2.0 PCI 0xE019 */
{PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_MAESTRAP_2_VOIP,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
CARDTYPE_DIVASRV_VOICE_P_30M_V2_PCI},
/* Diva Server 2FX 0xE01A */
{PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_2F,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_DIVASRV_B_2F_PCI},
/* Diva Server Voice BRI-2M 2.0 PCI 0xE01B */
{PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_BRI2M_2_VOIP,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 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 __devexit divas_remove_one(struct pci_dev *pdev);
static struct pci_driver diva_pci_driver = {
.name = "divas",
.probe = divas_init_one,
.remove = __devexit_p(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);
vsprintf(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 != 0); 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
*********************************************************/
byte __inline__ inpp(void __iomem *addr)
{
return (inb((unsigned long) addr));
}
word __inline__ inppw(void __iomem *addr)
{
return (inw((unsigned long) addr));
}
void __inline__ inppw_buffer(void __iomem *addr, void *P, int length)
{
insw((unsigned long) addr, (word *) P, length >> 1);
}
void __inline__ outppw_buffer(void __iomem *addr, void *P, int length)
{
outsw((unsigned long) addr, (word *) P, length >> 1);
}
void __inline__ outppw(void __iomem *addr, word w)
{
outw(w, (unsigned long) addr);
}
void __inline__ 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_DISABLED | 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);
flush_scheduled_work();
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)
{
int ret = -EINVAL;
if (!file->private_data) {
file->private_data = diva_xdi_open_adapter(file, buf,
count,
xdi_copy_from_user);
}
if (!file->private_data) {
return (-ENODEV);
}
ret = diva_xdi_write(file->private_data, file,
buf, count, 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)
{
int ret = -EINVAL;
if (!file->private_data) {
file->private_data = diva_xdi_open_adapter(file, buf,
count,
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 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 DIVA_INIT_FUNCTION 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 __devinit 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 __devexit 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 DIVA_INIT_FUNCTION 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
remove_divas_proc();
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 DIVA_EXIT_FUNCTION 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);
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