kernel-fxtec-pro1x/drivers/isdn/hardware/mISDN/speedfax.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

528 lines
13 KiB
C

/*
* speedfax.c low level stuff for Sedlbauer Speedfax+ cards
* based on the ISAR DSP
* Thanks to Sedlbauer AG for informations and HW
*
* Author Karsten Keil <keil@isdn4linux.de>
*
* Copyright 2009 by Karsten Keil <keil@isdn4linux.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/mISDNhw.h>
#include <linux/firmware.h>
#include "ipac.h"
#include "isar.h"
#define SPEEDFAX_REV "2.0"
#define PCI_SUBVENDOR_SPEEDFAX_PYRAMID 0x51
#define PCI_SUBVENDOR_SPEEDFAX_PCI 0x54
#define PCI_SUB_ID_SEDLBAUER 0x01
#define SFAX_PCI_ADDR 0xc8
#define SFAX_PCI_ISAC 0xd0
#define SFAX_PCI_ISAR 0xe0
/* TIGER 100 Registers */
#define TIGER_RESET_ADDR 0x00
#define TIGER_EXTERN_RESET_ON 0x01
#define TIGER_EXTERN_RESET_OFF 0x00
#define TIGER_AUX_CTRL 0x02
#define TIGER_AUX_DATA 0x03
#define TIGER_AUX_IRQMASK 0x05
#define TIGER_AUX_STATUS 0x07
/* Tiger AUX BITs */
#define SFAX_AUX_IOMASK 0xdd /* 1 and 5 are inputs */
#define SFAX_ISAR_RESET_BIT_OFF 0x00
#define SFAX_ISAR_RESET_BIT_ON 0x01
#define SFAX_TIGER_IRQ_BIT 0x02
#define SFAX_LED1_BIT 0x08
#define SFAX_LED2_BIT 0x10
#define SFAX_PCI_RESET_ON (SFAX_ISAR_RESET_BIT_ON)
#define SFAX_PCI_RESET_OFF (SFAX_LED1_BIT | SFAX_LED2_BIT)
static int sfax_cnt;
static u32 debug;
static u32 irqloops = 4;
struct sfax_hw {
struct list_head list;
struct pci_dev *pdev;
char name[MISDN_MAX_IDLEN];
u32 irq;
u32 irqcnt;
u32 cfg;
struct _ioport p_isac;
struct _ioport p_isar;
u8 aux_data;
spinlock_t lock; /* HW access lock */
struct isac_hw isac;
struct isar_hw isar;
};
static LIST_HEAD(Cards);
static DEFINE_RWLOCK(card_lock); /* protect Cards */
static void
_set_debug(struct sfax_hw *card)
{
card->isac.dch.debug = debug;
card->isar.ch[0].bch.debug = debug;
card->isar.ch[1].bch.debug = debug;
}
static int
set_debug(const char *val, struct kernel_param *kp)
{
int ret;
struct sfax_hw *card;
ret = param_set_uint(val, kp);
if (!ret) {
read_lock(&card_lock);
list_for_each_entry(card, &Cards, list)
_set_debug(card);
read_unlock(&card_lock);
}
return ret;
}
MODULE_AUTHOR("Karsten Keil");
MODULE_LICENSE("GPL v2");
MODULE_VERSION(SPEEDFAX_REV);
MODULE_FIRMWARE("isdn/ISAR.BIN");
module_param_call(debug, set_debug, param_get_uint, &debug, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Speedfax debug mask");
module_param(irqloops, uint, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(irqloops, "Speedfax maximal irqloops (default 4)");
IOFUNC_IND(ISAC, sfax_hw, p_isac)
IOFUNC_IND(ISAR, sfax_hw, p_isar)
static irqreturn_t
speedfax_irq(int intno, void *dev_id)
{
struct sfax_hw *sf = dev_id;
u8 val;
int cnt = irqloops;
spin_lock(&sf->lock);
val = inb(sf->cfg + TIGER_AUX_STATUS);
if (val & SFAX_TIGER_IRQ_BIT) { /* for us or shared ? */
spin_unlock(&sf->lock);
return IRQ_NONE; /* shared */
}
sf->irqcnt++;
val = ReadISAR_IND(sf, ISAR_IRQBIT);
Start_ISAR:
if (val & ISAR_IRQSTA)
mISDNisar_irq(&sf->isar);
val = ReadISAC_IND(sf, ISAC_ISTA);
if (val)
mISDNisac_irq(&sf->isac, val);
val = ReadISAR_IND(sf, ISAR_IRQBIT);
if ((val & ISAR_IRQSTA) && cnt--)
goto Start_ISAR;
if (cnt < irqloops)
pr_debug("%s: %d irqloops cpu%d\n", sf->name,
irqloops - cnt, smp_processor_id());
if (irqloops && !cnt)
pr_notice("%s: %d IRQ LOOP cpu%d\n", sf->name,
irqloops, smp_processor_id());
spin_unlock(&sf->lock);
return IRQ_HANDLED;
}
static void
enable_hwirq(struct sfax_hw *sf)
{
WriteISAC_IND(sf, ISAC_MASK, 0);
WriteISAR_IND(sf, ISAR_IRQBIT, ISAR_IRQMSK);
outb(SFAX_TIGER_IRQ_BIT, sf->cfg + TIGER_AUX_IRQMASK);
}
static void
disable_hwirq(struct sfax_hw *sf)
{
WriteISAC_IND(sf, ISAC_MASK, 0xFF);
WriteISAR_IND(sf, ISAR_IRQBIT, 0);
outb(0, sf->cfg + TIGER_AUX_IRQMASK);
}
static void
reset_speedfax(struct sfax_hw *sf)
{
pr_debug("%s: resetting card\n", sf->name);
outb(TIGER_EXTERN_RESET_ON, sf->cfg + TIGER_RESET_ADDR);
outb(SFAX_PCI_RESET_ON, sf->cfg + TIGER_AUX_DATA);
mdelay(1);
outb(TIGER_EXTERN_RESET_OFF, sf->cfg + TIGER_RESET_ADDR);
sf->aux_data = SFAX_PCI_RESET_OFF;
outb(sf->aux_data, sf->cfg + TIGER_AUX_DATA);
mdelay(1);
}
static int
sfax_ctrl(struct sfax_hw *sf, u32 cmd, u_long arg)
{
int ret = 0;
switch (cmd) {
case HW_RESET_REQ:
reset_speedfax(sf);
break;
case HW_ACTIVATE_IND:
if (arg & 1)
sf->aux_data &= ~SFAX_LED1_BIT;
if (arg & 2)
sf->aux_data &= ~SFAX_LED2_BIT;
outb(sf->aux_data, sf->cfg + TIGER_AUX_DATA);
break;
case HW_DEACT_IND:
if (arg & 1)
sf->aux_data |= SFAX_LED1_BIT;
if (arg & 2)
sf->aux_data |= SFAX_LED2_BIT;
outb(sf->aux_data, sf->cfg + TIGER_AUX_DATA);
break;
default:
pr_info("%s: %s unknown command %x %lx\n",
sf->name, __func__, cmd, arg);
ret = -EINVAL;
break;
}
return ret;
}
static int
channel_ctrl(struct sfax_hw *sf, struct mISDN_ctrl_req *cq)
{
int ret = 0;
switch (cq->op) {
case MISDN_CTRL_GETOP:
cq->op = MISDN_CTRL_LOOP;
break;
case MISDN_CTRL_LOOP:
/* cq->channel: 0 disable, 1 B1 loop 2 B2 loop, 3 both */
if (cq->channel < 0 || cq->channel > 3) {
ret = -EINVAL;
break;
}
ret = sf->isac.ctrl(&sf->isac, HW_TESTLOOP, cq->channel);
break;
default:
pr_info("%s: unknown Op %x\n", sf->name, cq->op);
ret = -EINVAL;
break;
}
return ret;
}
static int
sfax_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
{
struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
struct dchannel *dch = container_of(dev, struct dchannel, dev);
struct sfax_hw *sf = dch->hw;
struct channel_req *rq;
int err = 0;
pr_debug("%s: cmd:%x %p\n", sf->name, cmd, arg);
switch (cmd) {
case OPEN_CHANNEL:
rq = arg;
if (rq->protocol == ISDN_P_TE_S0)
err = sf->isac.open(&sf->isac, rq);
else
err = sf->isar.open(&sf->isar, rq);
if (err)
break;
if (!try_module_get(THIS_MODULE))
pr_info("%s: cannot get module\n", sf->name);
break;
case CLOSE_CHANNEL:
pr_debug("%s: dev(%d) close from %p\n", sf->name,
dch->dev.id, __builtin_return_address(0));
module_put(THIS_MODULE);
break;
case CONTROL_CHANNEL:
err = channel_ctrl(sf, arg);
break;
default:
pr_debug("%s: unknown command %x\n", sf->name, cmd);
return -EINVAL;
}
return err;
}
static int __devinit
init_card(struct sfax_hw *sf)
{
int ret, cnt = 3;
u_long flags;
ret = request_irq(sf->irq, speedfax_irq, IRQF_SHARED, sf->name, sf);
if (ret) {
pr_info("%s: couldn't get interrupt %d\n", sf->name, sf->irq);
return ret;
}
while (cnt--) {
spin_lock_irqsave(&sf->lock, flags);
ret = sf->isac.init(&sf->isac);
if (ret) {
spin_unlock_irqrestore(&sf->lock, flags);
pr_info("%s: ISAC init failed with %d\n",
sf->name, ret);
break;
}
enable_hwirq(sf);
/* RESET Receiver and Transmitter */
WriteISAC_IND(sf, ISAC_CMDR, 0x41);
spin_unlock_irqrestore(&sf->lock, flags);
msleep_interruptible(10);
if (debug & DEBUG_HW)
pr_notice("%s: IRQ %d count %d\n", sf->name,
sf->irq, sf->irqcnt);
if (!sf->irqcnt) {
pr_info("%s: IRQ(%d) got no requests during init %d\n",
sf->name, sf->irq, 3 - cnt);
} else
return 0;
}
free_irq(sf->irq, sf);
return -EIO;
}
static int __devinit
setup_speedfax(struct sfax_hw *sf)
{
u_long flags;
if (!request_region(sf->cfg, 256, sf->name)) {
pr_info("mISDN: %s config port %x-%x already in use\n",
sf->name, sf->cfg, sf->cfg + 255);
return -EIO;
}
outb(0xff, sf->cfg);
outb(0, sf->cfg);
outb(0xdd, sf->cfg + TIGER_AUX_CTRL);
outb(0, sf->cfg + TIGER_AUX_IRQMASK);
sf->isac.type = IPAC_TYPE_ISAC;
sf->p_isac.ale = sf->cfg + SFAX_PCI_ADDR;
sf->p_isac.port = sf->cfg + SFAX_PCI_ISAC;
sf->p_isar.ale = sf->cfg + SFAX_PCI_ADDR;
sf->p_isar.port = sf->cfg + SFAX_PCI_ISAR;
ASSIGN_FUNC(IND, ISAC, sf->isac);
ASSIGN_FUNC(IND, ISAR, sf->isar);
spin_lock_irqsave(&sf->lock, flags);
reset_speedfax(sf);
disable_hwirq(sf);
spin_unlock_irqrestore(&sf->lock, flags);
return 0;
}
static void
release_card(struct sfax_hw *card) {
u_long flags;
spin_lock_irqsave(&card->lock, flags);
disable_hwirq(card);
spin_unlock_irqrestore(&card->lock, flags);
card->isac.release(&card->isac);
free_irq(card->irq, card);
card->isar.release(&card->isar);
mISDN_unregister_device(&card->isac.dch.dev);
release_region(card->cfg, 256);
pci_disable_device(card->pdev);
pci_set_drvdata(card->pdev, NULL);
write_lock_irqsave(&card_lock, flags);
list_del(&card->list);
write_unlock_irqrestore(&card_lock, flags);
kfree(card);
sfax_cnt--;
}
static int __devinit
setup_instance(struct sfax_hw *card)
{
const struct firmware *firmware;
int i, err;
u_long flags;
snprintf(card->name, MISDN_MAX_IDLEN - 1, "Speedfax.%d", sfax_cnt + 1);
write_lock_irqsave(&card_lock, flags);
list_add_tail(&card->list, &Cards);
write_unlock_irqrestore(&card_lock, flags);
_set_debug(card);
spin_lock_init(&card->lock);
card->isac.hwlock = &card->lock;
card->isar.hwlock = &card->lock;
card->isar.ctrl = (void *)&sfax_ctrl;
card->isac.name = card->name;
card->isar.name = card->name;
card->isar.owner = THIS_MODULE;
err = request_firmware(&firmware, "isdn/ISAR.BIN", &card->pdev->dev);
if (err < 0) {
pr_info("%s: firmware request failed %d\n",
card->name, err);
goto error_fw;
}
if (debug & DEBUG_HW)
pr_notice("%s: got firmware %zu bytes\n",
card->name, firmware->size);
mISDNisac_init(&card->isac, card);
card->isac.dch.dev.D.ctrl = sfax_dctrl;
card->isac.dch.dev.Bprotocols =
mISDNisar_init(&card->isar, card);
for (i = 0; i < 2; i++) {
set_channelmap(i + 1, card->isac.dch.dev.channelmap);
list_add(&card->isar.ch[i].bch.ch.list,
&card->isac.dch.dev.bchannels);
}
err = setup_speedfax(card);
if (err)
goto error_setup;
err = card->isar.init(&card->isar);
if (err)
goto error;
err = mISDN_register_device(&card->isac.dch.dev,
&card->pdev->dev, card->name);
if (err)
goto error;
err = init_card(card);
if (err)
goto error_init;
err = card->isar.firmware(&card->isar, firmware->data, firmware->size);
if (!err) {
release_firmware(firmware);
sfax_cnt++;
pr_notice("SpeedFax %d cards installed\n", sfax_cnt);
return 0;
}
disable_hwirq(card);
free_irq(card->irq, card);
error_init:
mISDN_unregister_device(&card->isac.dch.dev);
error:
release_region(card->cfg, 256);
error_setup:
card->isac.release(&card->isac);
card->isar.release(&card->isar);
release_firmware(firmware);
error_fw:
pci_disable_device(card->pdev);
write_lock_irqsave(&card_lock, flags);
list_del(&card->list);
write_unlock_irqrestore(&card_lock, flags);
kfree(card);
return err;
}
static int __devinit
sfaxpci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
int err = -ENOMEM;
struct sfax_hw *card = kzalloc(sizeof(struct sfax_hw), GFP_KERNEL);
if (!card) {
pr_info("No memory for Speedfax+ PCI\n");
return err;
}
card->pdev = pdev;
err = pci_enable_device(pdev);
if (err) {
kfree(card);
return err;
}
pr_notice("mISDN: Speedfax found adapter %s at %s\n",
(char *)ent->driver_data, pci_name(pdev));
card->cfg = pci_resource_start(pdev, 0);
card->irq = pdev->irq;
pci_set_drvdata(pdev, card);
err = setup_instance(card);
if (err)
pci_set_drvdata(pdev, NULL);
return err;
}
static void __devexit
sfax_remove_pci(struct pci_dev *pdev)
{
struct sfax_hw *card = pci_get_drvdata(pdev);
if (card)
release_card(card);
else
pr_debug("%s: drvdata allready removed\n", __func__);
}
static struct pci_device_id sfaxpci_ids[] __devinitdata = {
{ PCI_VENDOR_ID_TIGERJET, PCI_DEVICE_ID_TIGERJET_100,
PCI_SUBVENDOR_SPEEDFAX_PYRAMID, PCI_SUB_ID_SEDLBAUER,
0, 0, (unsigned long) "Pyramid Speedfax + PCI"
},
{ PCI_VENDOR_ID_TIGERJET, PCI_DEVICE_ID_TIGERJET_100,
PCI_SUBVENDOR_SPEEDFAX_PCI, PCI_SUB_ID_SEDLBAUER,
0, 0, (unsigned long) "Sedlbauer Speedfax + PCI"
},
{ }
};
MODULE_DEVICE_TABLE(pci, sfaxpci_ids);
static struct pci_driver sfaxpci_driver = {
.name = "speedfax+ pci",
.probe = sfaxpci_probe,
.remove = __devexit_p(sfax_remove_pci),
.id_table = sfaxpci_ids,
};
static int __init
Speedfax_init(void)
{
int err;
pr_notice("Sedlbauer Speedfax+ Driver Rev. %s\n",
SPEEDFAX_REV);
err = pci_register_driver(&sfaxpci_driver);
return err;
}
static void __exit
Speedfax_cleanup(void)
{
pci_unregister_driver(&sfaxpci_driver);
}
module_init(Speedfax_init);
module_exit(Speedfax_cleanup);