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linux/drivers/parport/parport_serial.c
Yoann Padioleau dd00cc486a some kmalloc/memset ->kzalloc (tree wide) 
Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc).

Here is a short excerpt of the semantic patch performing
this transformation:

@@
type T2;
expression x;
identifier f,fld;
expression E;
expression E1,E2;
expression e1,e2,e3,y;
statement S;
@@

 x =
- kmalloc
+ kzalloc
  (E1,E2)
  ...  when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\)
- memset((T2)x,0,E1);

@@
expression E1,E2,E3;
@@

- kzalloc(E1 * E2,E3)
+ kcalloc(E1,E2,E3)

[akpm@linux-foundation.org: get kcalloc args the right way around]
Signed-off-by: Yoann Padioleau <padator@wanadoo.fr>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Cc: Bryan Wu <bryan.wu@analog.com>
Acked-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Dave Airlie <airlied@linux.ie>
Acked-by: Roland Dreier <rolandd@cisco.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Acked-by: Pierre Ossman <drzeus-list@drzeus.cx>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: Greg KH <greg@kroah.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:50 -07:00

447 lines
12 KiB
C
Raw Blame History

/*
* Support for common PCI multi-I/O cards (which is most of them)
*
* Copyright (C) 2001 Tim Waugh <twaugh@redhat.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
*
* Multi-function PCI cards are supposed to present separate logical
* devices on the bus. A common thing to do seems to be to just use
* one logical device with lots of base address registers for both
* parallel ports and serial ports. This driver is for dealing with
* that.
*
*/
#include <linux/types.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/parport.h>
#include <linux/parport_pc.h>
#include <linux/8250_pci.h>
enum parport_pc_pci_cards {
titan_110l = 0,
titan_210l,
netmos_9xx5_combo,
netmos_9855,
avlab_1s1p,
avlab_1s2p,
avlab_2s1p,
siig_1s1p_10x,
siig_2s1p_10x,
siig_2p1s_20x,
siig_1s1p_20x,
siig_2s1p_20x,
};
/* each element directly indexed from enum list, above */
struct parport_pc_pci {
int numports;
struct { /* BAR (base address registers) numbers in the config
space header */
int lo;
int hi; /* -1 if not there, >6 for offset-method (max
BAR is 6) */
} addr[4];
/* If set, this is called immediately after pci_enable_device.
* If it returns non-zero, no probing will take place and the
* ports will not be used. */
int (*preinit_hook) (struct pci_dev *pdev, struct parport_pc_pci *card,
int autoirq, int autodma);
/* If set, this is called after probing for ports. If 'failed'
* is non-zero we couldn't use any of the ports. */
void (*postinit_hook) (struct pci_dev *pdev,
struct parport_pc_pci *card, int failed);
};
static int __devinit netmos_parallel_init(struct pci_dev *dev, struct parport_pc_pci *card, int autoirq, int autodma)
{
/*
* Netmos uses the subdevice ID to indicate the number of parallel
* and serial ports. The form is 0x00PS, where <P> is the number of
* parallel ports and <S> is the number of serial ports.
*/
card->numports = (dev->subsystem_device & 0xf0) >> 4;
return 0;
}
static struct parport_pc_pci cards[] __devinitdata = {
/* titan_110l */ { 1, { { 3, -1 }, } },
/* titan_210l */ { 1, { { 3, -1 }, } },
/* netmos_9xx5_combo */ { 1, { { 2, -1 }, }, netmos_parallel_init },
/* netmos_9855 */ { 1, { { 0, -1 }, }, netmos_parallel_init },
/* avlab_1s1p */ { 1, { { 1, 2}, } },
/* avlab_1s2p */ { 2, { { 1, 2}, { 3, 4 },} },
/* avlab_2s1p */ { 1, { { 2, 3}, } },
/* siig_1s1p_10x */ { 1, { { 3, 4 }, } },
/* siig_2s1p_10x */ { 1, { { 4, 5 }, } },
/* siig_2p1s_20x */ { 2, { { 1, 2 }, { 3, 4 }, } },
/* siig_1s1p_20x */ { 1, { { 1, 2 }, } },
/* siig_2s1p_20x */ { 1, { { 2, 3 }, } },
};
static struct pci_device_id parport_serial_pci_tbl[] = {
/* PCI cards */
{ PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_110L,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_110l },
{ PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_210L,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_210l },
{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9735,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9745,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9835,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9845,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9855,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9855 },
/* PCI_VENDOR_ID_AVLAB/Intek21 has another bunch of cards ...*/
{ PCI_VENDOR_ID_AFAVLAB, 0x2110,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p },
{ PCI_VENDOR_ID_AFAVLAB, 0x2111,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p },
{ PCI_VENDOR_ID_AFAVLAB, 0x2112,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p },
{ PCI_VENDOR_ID_AFAVLAB, 0x2140,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p },
{ PCI_VENDOR_ID_AFAVLAB, 0x2141,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p },
{ PCI_VENDOR_ID_AFAVLAB, 0x2142,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p },
{ PCI_VENDOR_ID_AFAVLAB, 0x2160,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p },
{ PCI_VENDOR_ID_AFAVLAB, 0x2161,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p },
{ PCI_VENDOR_ID_AFAVLAB, 0x2162,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p },
{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_550,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_650,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_850,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_550,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_650,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_850,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_550,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_650,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_850,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_550,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_650,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_20x },
{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_850,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_20x },
{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_550,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_650,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
{ PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_850,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
{ 0, } /* terminate list */
};
MODULE_DEVICE_TABLE(pci,parport_serial_pci_tbl);
/*
* This table describes the serial "geometry" of these boards. Any
* quirks for these can be found in drivers/serial/8250_pci.c
*
* Cards not tested are marked n/t
* If you have one of these cards and it works for you, please tell me..
*/
static struct pciserial_board pci_parport_serial_boards[] __devinitdata = {
[titan_110l] = {
.flags = FL_BASE1 | FL_BASE_BARS,
.num_ports = 1,
.base_baud = 921600,
.uart_offset = 8,
},
[titan_210l] = {
.flags = FL_BASE1 | FL_BASE_BARS,
.num_ports = 2,
.base_baud = 921600,
.uart_offset = 8,
},
[netmos_9xx5_combo] = {
.flags = FL_BASE0 | FL_BASE_BARS,
.num_ports = 1,
.base_baud = 115200,
.uart_offset = 8,
},
[netmos_9855] = {
.flags = FL_BASE2 | FL_BASE_BARS,
.num_ports = 1,
.base_baud = 115200,
.uart_offset = 8,
},
[avlab_1s1p] = { /* n/t */
.flags = FL_BASE0 | FL_BASE_BARS,
.num_ports = 1,
.base_baud = 115200,
.uart_offset = 8,
},
[avlab_1s2p] = { /* n/t */
.flags = FL_BASE0 | FL_BASE_BARS,
.num_ports = 1,
.base_baud = 115200,
.uart_offset = 8,
},
[avlab_2s1p] = { /* n/t */
.flags = FL_BASE0 | FL_BASE_BARS,
.num_ports = 2,
.base_baud = 115200,
.uart_offset = 8,
},
[siig_1s1p_10x] = {
.flags = FL_BASE2,
.num_ports = 1,
.base_baud = 460800,
.uart_offset = 8,
},
[siig_2s1p_10x] = {
.flags = FL_BASE2,
.num_ports = 1,
.base_baud = 921600,
.uart_offset = 8,
},
[siig_2p1s_20x] = {
.flags = FL_BASE0,
.num_ports = 1,
.base_baud = 921600,
.uart_offset = 8,
},
[siig_1s1p_20x] = {
.flags = FL_BASE0,
.num_ports = 1,
.base_baud = 921600,
.uart_offset = 8,
},
[siig_2s1p_20x] = {
.flags = FL_BASE0,
.num_ports = 1,
.base_baud = 921600,
.uart_offset = 8,
},
};
struct parport_serial_private {
struct serial_private *serial;
int num_par;
struct parport *port[PARPORT_MAX];
struct parport_pc_pci par;
};
/* Register the serial port(s) of a PCI card. */
static int __devinit serial_register (struct pci_dev *dev,
const struct pci_device_id *id)
{
struct parport_serial_private *priv = pci_get_drvdata (dev);
struct pciserial_board *board;
struct serial_private *serial;
board = &pci_parport_serial_boards[id->driver_data];
serial = pciserial_init_ports(dev, board);
if (IS_ERR(serial))
return PTR_ERR(serial);
priv->serial = serial;
return 0;
}
/* Register the parallel port(s) of a PCI card. */
static int __devinit parport_register (struct pci_dev *dev,
const struct pci_device_id *id)
{
struct parport_pc_pci *card;
struct parport_serial_private *priv = pci_get_drvdata (dev);
int n, success = 0;
priv->par = cards[id->driver_data];
card = &priv->par;
if (card->preinit_hook &&
card->preinit_hook (dev, card, PARPORT_IRQ_NONE, PARPORT_DMA_NONE))
return -ENODEV;
for (n = 0; n < card->numports; n++) {
struct parport *port;
int lo = card->addr[n].lo;
int hi = card->addr[n].hi;
unsigned long io_lo, io_hi;
if (priv->num_par == ARRAY_SIZE (priv->port)) {
printk (KERN_WARNING
"parport_serial: %s: only %zu parallel ports "
"supported (%d reported)\n", pci_name (dev),
ARRAY_SIZE(priv->port), card->numports);
break;
}
io_lo = pci_resource_start (dev, lo);
io_hi = 0;
if ((hi >= 0) && (hi <= 6))
io_hi = pci_resource_start (dev, hi);
else if (hi > 6)
io_lo += hi; /* Reinterpret the meaning of
"hi" as an offset (see SYBA
def.) */
/* TODO: test if sharing interrupts works */
dev_dbg(&dev->dev, "PCI parallel port detected: I/O at "
"%#lx(%#lx)\n", io_lo, io_hi);
port = parport_pc_probe_port (io_lo, io_hi, PARPORT_IRQ_NONE,
PARPORT_DMA_NONE, &dev->dev);
if (port) {
priv->port[priv->num_par++] = port;
success = 1;
}
}
if (card->postinit_hook)
card->postinit_hook (dev, card, !success);
return 0;
}
static int __devinit parport_serial_pci_probe (struct pci_dev *dev,
const struct pci_device_id *id)
{
struct parport_serial_private *priv;
int err;
priv = kzalloc (sizeof *priv, GFP_KERNEL);
if (!priv)
return -ENOMEM;
pci_set_drvdata (dev, priv);
err = pci_enable_device (dev);
if (err) {
pci_set_drvdata (dev, NULL);
kfree (priv);
return err;
}
if (parport_register (dev, id)) {
pci_set_drvdata (dev, NULL);
kfree (priv);
return -ENODEV;
}
if (serial_register (dev, id)) {
int i;
for (i = 0; i < priv->num_par; i++)
parport_pc_unregister_port (priv->port[i]);
pci_set_drvdata (dev, NULL);
kfree (priv);
return -ENODEV;
}
return 0;
}
static void __devexit parport_serial_pci_remove (struct pci_dev *dev)
{
struct parport_serial_private *priv = pci_get_drvdata (dev);
int i;
pci_set_drvdata(dev, NULL);
// Serial ports
if (priv->serial)
pciserial_remove_ports(priv->serial);
// Parallel ports
for (i = 0; i < priv->num_par; i++)
parport_pc_unregister_port (priv->port[i]);
kfree (priv);
return;
}
#ifdef CONFIG_PM
static int parport_serial_pci_suspend(struct pci_dev *dev, pm_message_t state)
{
struct parport_serial_private *priv = pci_get_drvdata(dev);
if (priv->serial)
pciserial_suspend_ports(priv->serial);
/* FIXME: What about parport? */
pci_save_state(dev);
pci_set_power_state(dev, pci_choose_state(dev, state));
return 0;
}
static int parport_serial_pci_resume(struct pci_dev *dev)
{
struct parport_serial_private *priv = pci_get_drvdata(dev);
int err;
pci_set_power_state(dev, PCI_D0);
pci_restore_state(dev);
/*
* The device may have been disabled. Re-enable it.
*/
err = pci_enable_device(dev);
if (err) {
printk(KERN_ERR "parport_serial: %s: error enabling "
"device for resume (%d)\n", pci_name(dev), err);
return err;
}
if (priv->serial)
pciserial_resume_ports(priv->serial);
/* FIXME: What about parport? */
return 0;
}
#endif
static struct pci_driver parport_serial_pci_driver = {
.name = "parport_serial",
.id_table = parport_serial_pci_tbl,
.probe = parport_serial_pci_probe,
.remove = __devexit_p(parport_serial_pci_remove),
#ifdef CONFIG_PM
.suspend = parport_serial_pci_suspend,
.resume = parport_serial_pci_resume,
#endif
};
static int __init parport_serial_init (void)
{
return pci_register_driver (&parport_serial_pci_driver);
}
static void __exit parport_serial_exit (void)
{
pci_unregister_driver (&parport_serial_pci_driver);
return;
}
MODULE_AUTHOR("Tim Waugh <twaugh@redhat.com>");
MODULE_DESCRIPTION("Driver for common parallel+serial multi-I/O PCI cards");
MODULE_LICENSE("GPL");
module_init(parport_serial_init);
module_exit(parport_serial_exit);
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