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linux/drivers/parport/parport_serial.c
Martin Schitter 44e58a6a0b [PATCH] parport: NetMos nm9855 fix 
kernel 2.6.12-rc2 adopted some code by Bjorn Helgaas supporting NetMos combo
controller cards. this implementation doesn't work for nm9855 based cards!

there are two reasons:

a) the module 'parport_pc' doesn't want to give the resonsibility for
   the netmos_9855 to 'parport_serial' and can not handle the serial lines
   -- trivial to fix...

   http://lists.infradead.org/pipermail/linux-parport/2005-February/000250.html
   http://lkml.org/lkml/2005/3/24/199 b) the support for the nm9855 in

   'parport_serial' still doesn't work because of wrong assumptions about
   the relevant BARs port address layout for this chip:

	 0000:00:09.0 Communication controller:
         	      NetMos Technology PCI 9855
         	      Multi-I/O Controller (rev 01)
	 	      (= 9710:9855)
         Subsystem: LSI Logic / Symbios Logic 1P4S (= 1000:0014)
  	 Flags: medium devsel, IRQ 177
	 I/O ports at a800 [size=8]  (= parport)
	 I/O ports at a400 [size=8]
	 I/O ports at a000 [size=8]  (= serial)
	 I/O ports at 9800 [size=8]  (= serial)
	 I/O ports at 9400 [size=8]  (= serial)
	 I/O ports at 9000 [size=16] (= serial)

the following patch will fix the problem.

Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-23 09:45:27 -07:00

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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/serial.h>
#include <linux/serialP.h>
#include <linux/list.h>
#include <linux/8250_pci.h>
#include <asm/serial.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);
struct pci_board_no_ids {
int flags;
int num_ports;
int base_baud;
int uart_offset;
int reg_shift;
int (*init_fn)(struct pci_dev *dev, struct pci_board_no_ids *board,
int enable);
int first_uart_offset;
};
static int __devinit siig10x_init_fn(struct pci_dev *dev, struct pci_board_no_ids *board, int enable)
{
return pci_siig10x_fn(dev, enable);
}
static int __devinit siig20x_init_fn(struct pci_dev *dev, struct pci_board_no_ids *board, int enable)
{
return pci_siig20x_fn(dev, enable);
}
static int __devinit netmos_serial_init(struct pci_dev *dev, struct pci_board_no_ids *board, int enable)
{
board->num_ports = dev->subsystem_device & 0xf;
return 0;
}
static struct pci_board_no_ids pci_boards[] __devinitdata = {
/*
* PCI Flags, Number of Ports, Base (Maximum) Baud Rate,
* Offset to get to next UART's registers,
* Register shift to use for memory-mapped I/O,
* Initialization function, first UART offset
*/
// Cards not tested are marked n/t
// If you have one of these cards and it works for you, please tell me..
/* titan_110l */ { SPCI_FL_BASE1 | SPCI_FL_BASE_TABLE, 1, 921600 },
/* titan_210l */ { SPCI_FL_BASE1 | SPCI_FL_BASE_TABLE, 2, 921600 },
/* netmos_9xx5_combo */ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200, 0, 0, netmos_serial_init },
/* netmos_9855 */ { SPCI_FL_BASE2 | SPCI_FL_BASE_TABLE, 1, 115200, 0, 0, netmos_serial_init },
/* avlab_1s1p (n/t) */ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
/* avlab_1s1p_650 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
/* avlab_1s1p_850 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
/* avlab_1s2p (n/t) */ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
/* avlab_1s2p_650 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
/* avlab_1s2p_850 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
/* avlab_2s1p (n/t) */ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 },
/* avlab_2s1p_650 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 },
/* avlab_2s1p_850 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 },
/* siig_1s1p_10x */ { SPCI_FL_BASE2, 1, 460800, 0, 0, siig10x_init_fn },
/* siig_2s1p_10x */ { SPCI_FL_BASE2, 1, 921600, 0, 0, siig10x_init_fn },
/* siig_2p1s_20x */ { SPCI_FL_BASE0, 1, 921600, 0, 0, siig20x_init_fn },
/* siig_1s1p_20x */ { SPCI_FL_BASE0, 1, 921600, 0, 0, siig20x_init_fn },
/* siig_2s1p_20x */ { SPCI_FL_BASE0, 1, 921600, 0, 0, siig20x_init_fn },
};
struct parport_serial_private {
int num_ser;
int line[20];
struct pci_board_no_ids ser;
int num_par;
struct parport *port[PARPORT_MAX];
struct parport_pc_pci par;
};
static int __devinit get_pci_port (struct pci_dev *dev,
struct pci_board_no_ids *board,
struct serial_struct *req,
int idx)
{
unsigned long port;
int base_idx;
int max_port;
int offset;
base_idx = SPCI_FL_GET_BASE(board->flags);
if (board->flags & SPCI_FL_BASE_TABLE)
base_idx += idx;
if (board->flags & SPCI_FL_REGION_SZ_CAP) {
max_port = pci_resource_len(dev, base_idx) / 8;
if (idx >= max_port)
return 1;
}
offset = board->first_uart_offset;
/* Timedia/SUNIX uses a mixture of BARs and offsets */
/* Ugh, this is ugly as all hell --- TYT */
if(dev->vendor == PCI_VENDOR_ID_TIMEDIA ) /* 0x1409 */
switch(idx) {
case 0: base_idx=0;
break;
case 1: base_idx=0; offset=8;
break;
case 2: base_idx=1;
break;
case 3: base_idx=1; offset=8;
break;
case 4: /* BAR 2*/
case 5: /* BAR 3 */
case 6: /* BAR 4*/
case 7: base_idx=idx-2; /* BAR 5*/
}
port = pci_resource_start(dev, base_idx) + offset;
if ((board->flags & SPCI_FL_BASE_TABLE) == 0)
port += idx * (board->uart_offset ? board->uart_offset : 8);
if (pci_resource_flags (dev, base_idx) & IORESOURCE_IO) {
int high_bits_offset = ((sizeof(long)-sizeof(int))*8);
req->port = port;
if (high_bits_offset)
req->port_high = port >> high_bits_offset;
else
req->port_high = 0;
return 0;
}
req->io_type = SERIAL_IO_MEM;
req->iomem_base = ioremap(port, board->uart_offset);
req->iomem_reg_shift = board->reg_shift;
req->port = 0;
return req->iomem_base ? 0 : 1;
}
/* 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 pci_board_no_ids *board;
struct parport_serial_private *priv = pci_get_drvdata (dev);
struct serial_struct serial_req;
int base_baud;
int k;
int success = 0;
priv->ser = pci_boards[id->driver_data];
board = &priv->ser;
if (board->init_fn && ((board->init_fn) (dev, board, 1) != 0))
return 1;
base_baud = board->base_baud;
if (!base_baud)
base_baud = BASE_BAUD;
memset (&serial_req, 0, sizeof (serial_req));
for (k = 0; k < board->num_ports; k++) {
int line;
if (priv->num_ser == ARRAY_SIZE (priv->line)) {
printk (KERN_WARNING
"parport_serial: %s: only %u serial lines "
"supported (%d reported)\n", pci_name (dev),
ARRAY_SIZE (priv->line), board->num_ports);
break;
}
serial_req.irq = dev->irq;
if (get_pci_port (dev, board, &serial_req, k))
break;
serial_req.flags = ASYNC_SKIP_TEST | ASYNC_AUTOPROBE;
serial_req.baud_base = base_baud;
line = register_serial (&serial_req);
if (line < 0) {
printk (KERN_DEBUG
"parport_serial: register_serial failed\n");
continue;
}
priv->line[priv->num_ser++] = line;
success = 1;
}
return success ? 0 : 1;
}
/* 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 i = id->driver_data, n;
int 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 %u 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 */
printk (KERN_DEBUG "PCI parallel port detected: %04x:%04x, "
"I/O at %#lx(%#lx)\n",
parport_serial_pci_tbl[i].vendor,
parport_serial_pci_tbl[i].device, 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 success ? 0 : 1;
}
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;
priv->num_ser = priv->num_par = 0;
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;
// Serial ports
for (i = 0; i < priv->num_ser; i++) {
unregister_serial (priv->line[i]);
if (priv->ser.init_fn)
(priv->ser.init_fn) (dev, &priv->ser, 0);
}
pci_set_drvdata (dev, NULL);
// Parallel ports
for (i = 0; i < priv->num_par; i++)
parport_pc_unregister_port (priv->port[i]);
kfree (priv);
return;
}
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),
};
static int __init parport_serial_init (void)
{
return pci_module_init (&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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