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7a171cdcb6
linux-next/drivers/parport/parport_serial.c
Russell King 7a171cdcb6 [SERIAL] Fix two bugs in parport_serial 
Steinar H. Gunderson reported:

  - For some reason, it detects the 9845 as a 9735 -- it appears this is
    simply related to the ordering in parport_serial_pci_tbl[]. If we move
    the 9845 up above the 9735, it prints out 9710:9845, but no change in
    behaviour. (We didn't find out why this was the case; we left it alone
    since it didn't affect our problem.)
  - The card has no parallel port (at least no physical ones), yet it reports
    (via its subsystem ID of 0x0014) one parallel port and four serial ports.
    The probe for the parallel port fails, and the driver just aborts. Thus,
    it doesn't find the serial ports.

Fix the debugging code to use dev_dbg, but don't bother displaying the
PCI ID of the detected board (that's accessible via other means.)

Also, arrange for parport_register() to return 0 even if it finds no
ports.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-05 21:25:40 +00:00

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/*
* 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_1s1p_650,
avlab_1s1p_850,
avlab_1s2p,
avlab_1s2p_650,
avlab_1s2p_850,
avlab_2s1p,
avlab_2s1p_650,
avlab_2s1p_850,
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_1s1p_650 */ { 1, { { 1, 2}, } },
/* avlab_1s1p_850 */ { 1, { { 1, 2}, } },
/* avlab_1s2p */ { 2, { { 1, 2}, { 3, 4 },} },
/* avlab_1s2p_650 */ { 2, { { 1, 2}, { 3, 4 },} },
/* avlab_1s2p_850 */ { 2, { { 1, 2}, { 3, 4 },} },
/* avlab_2s1p */ { 1, { { 2, 3}, } },
/* avlab_2s1p_650 */ { 1, { { 2, 3}, } },
/* avlab_2s1p_850 */ { 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_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 ...*/
{ 0x14db, 0x2110, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p},
{ 0x14db, 0x2111, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p_650},
{ 0x14db, 0x2112, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p_850},
{ 0x14db, 0x2140, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p},
{ 0x14db, 0x2141, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p_650},
{ 0x14db, 0x2142, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p_850},
{ 0x14db, 0x2160, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p},
{ 0x14db, 0x2161, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p_650},
{ 0x14db, 0x2162, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p_850},
{ 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_1s1p_650] = { /* nt */
.flags = FL_BASE0 | FL_BASE_BARS,
.num_ports = 1,
.base_baud = 115200,
.uart_offset = 8,
},
[avlab_1s1p_850] = { /* nt */
.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_1s2p_650] = { /* nt */
.flags = FL_BASE0 | FL_BASE_BARS,
.num_ports = 1,
.base_baud = 115200,
.uart_offset = 8,
},
[avlab_1s2p_850] = { /* nt */
.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,
},
[avlab_2s1p_650] = { /* nt */
.flags = FL_BASE0 | FL_BASE_BARS,
.num_ports = 2,
.base_baud = 115200,
.uart_offset = 8,
},
[avlab_2s1p_850] = { /* nt */
.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);
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 = kmalloc (sizeof *priv, GFP_KERNEL);
if (!priv)
return -ENOMEM;
memset(priv, 0, sizeof(struct parport_serial_private));
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;
}
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);
pci_set_power_state(dev, PCI_D0);
pci_restore_state(dev);
/*
* The device may have been disabled. Re-enable it.
*/
pci_enable_device(dev);
if (priv->serial)
pciserial_resume_ports(priv->serial);
/* FIXME: What about parport? */
return 0;
}
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),
.suspend = parport_serial_pci_suspend,
.resume = parport_serial_pci_resume,
};
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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