* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License.
*
- * $Id: 8250_pci.c,v 1.24 2002/07/29 14:39:56 rmk Exp $
+ * $Id: 8250_pci.c,v 1.28 2002/11/02 11:14:18 rmk Exp $
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/serial.h>
-
#include <linux/serialP.h>
#include <asm/bitops.h>
int line[0];
};
+/*
+ * init_fn returns:
+ * > 0 - number of ports
+ * = 0 - use board->num_ports
+ * < 0 - error
+ */
struct pci_board {
int flags;
int num_ports;
int base_baud;
int uart_offset;
int reg_shift;
- int (*init_fn)(struct pci_dev *dev, struct pci_board *board,
- int enable);
+ int (*init_fn)(struct pci_dev *dev, int enable);
int first_uart_offset;
};
* seems to be mainly needed on card using the PLX which also use I/O
* mapped memory.
*/
-static int __devinit
-pci_plx9050_fn(struct pci_dev *dev, struct pci_board *board, int enable)
+static int __devinit pci_plx9050_fn(struct pci_dev *dev, int enable)
{
u8 *p, irq_config = 0;
#define PCI_DEVICE_ID_SIIG_1S_10x (PCI_DEVICE_ID_SIIG_1S_10x_550 & 0xfffc)
#define PCI_DEVICE_ID_SIIG_2S_10x (PCI_DEVICE_ID_SIIG_2S_10x_550 & 0xfff8)
-static int __devinit
-pci_siig10x_fn(struct pci_dev *dev, struct pci_board *board, int enable)
+static int __devinit pci_siig10x_fn(struct pci_dev *dev, int enable)
{
u16 data, *p;
#define PCI_DEVICE_ID_SIIG_2S_20x (PCI_DEVICE_ID_SIIG_2S_20x_550 & 0xfffc)
#define PCI_DEVICE_ID_SIIG_2S1P_20x (PCI_DEVICE_ID_SIIG_2S1P_20x_550 & 0xfffc)
-static int __devinit
-pci_siig20x_fn(struct pci_dev *dev, struct pci_board *board, int enable)
+static int __devinit pci_siig20x_fn(struct pci_dev *dev, int enable)
{
u8 data;
}
/* Added for EKF Intel i960 serial boards */
-static int __devinit
-pci_inteli960ni_fn(struct pci_dev *dev, struct pci_board *board, int enable)
+static int __devinit pci_inteli960ni_fn(struct pci_dev *dev, int enable)
{
unsigned long oldval;
{ 0, 0 }
};
-static int __devinit
-pci_timedia_fn(struct pci_dev *dev, struct pci_board *board, int enable)
+static int __devinit pci_timedia_fn(struct pci_dev *dev, int enable)
{
int i, j;
unsigned short *ids;
for (i = 0; timedia_data[i].num; i++) {
ids = timedia_data[i].ids;
- for (j = 0; ids[j]; j++) {
- if (pci_get_subdevice(dev) == ids[j]) {
- board->num_ports = timedia_data[i].num;
- return 0;
- }
- }
+ for (j = 0; ids[j]; j++)
+ if (pci_get_subdevice(dev) == ids[j])
+ return timedia_data[i].num;
}
return 0;
}
* and Keystone have one Diva chip with 3 UARTs. Some later machines have
* one Diva chip, but it has been expanded to 5 UARTs.
*/
-static int __devinit
-pci_hp_diva(struct pci_dev *dev, struct pci_board *board, int enable)
+static int __devinit pci_hp_diva(struct pci_dev *dev, int enable)
{
+ int rc = 0;
+
if (!enable)
return 0;
case PCI_DEVICE_ID_HP_DIVA_HALFDOME:
case PCI_DEVICE_ID_HP_DIVA_KEYSTONE:
case PCI_DEVICE_ID_HP_DIVA_EVEREST:
- board->num_ports = 3;
+ rc = 3;
break;
case PCI_DEVICE_ID_HP_DIVA_TOSCA2:
- board->num_ports = 2;
+ rc = 2;
break;
case PCI_DEVICE_ID_HP_DIVA_MAESTRO:
- board->num_ports = 4;
+ rc = 4;
break;
case PCI_DEVICE_ID_HP_DIVA_POWERBAR:
- board->num_ports = 1;
+ rc = 1;
break;
}
- return 0;
+ return rc;
}
-static int __devinit
-pci_xircom_fn(struct pci_dev *dev, struct pci_board *board, int enable)
+static int __devinit pci_xircom_fn(struct pci_dev *dev, int enable)
{
__set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(HZ/10);
0x400, 7, pci_plx9050_fn },
{ SPCI_FL_BASE2, 4, 921600, /* pbn_plx_romulus */
0x20, 2, pci_plx9050_fn, 0x03 },
- /* This board uses the size of PCI Base region 0 to
- * signal now many ports are available */
+
+ /*
+ * This board uses the size of PCI Base region 0 to
+ * signal now many ports are available
+ */
{ SPCI_FL_BASE0 | SPCI_FL_REGION_SZ_CAP, 32, 115200 }, /* pbn_oxsemi */
{ SPCI_FL_BASE_TABLE, 1, 921600, /* pbn_timedia */
0, 0, pci_timedia_fn },
* later?)
*/
if ((((dev->class >> 8) != PCI_CLASS_COMMUNICATION_SERIAL) &&
- ((dev->class >> 8) != PCI_CLASS_COMMUNICATION_MODEM)) ||
+ ((dev->class >> 8) != PCI_CLASS_COMMUNICATION_MODEM)) ||
(dev->class & 0xff) > 6)
- return 1;
+ return -ENODEV;
for (i = 0; i < 6; i++) {
if (IS_PCI_REGION_IOPORT(dev, i)) {
board->flags = first_port;
return 0;
}
- return 1;
+ return -ENODEV;
+}
+
+static inline int
+serial_pci_matches(struct pci_board *board, int index)
+{
+ return
+ board->base_baud == pci_boards[index].base_baud &&
+ board->num_ports == pci_boards[index].num_ports &&
+ board->uart_offset == pci_boards[index].uart_offset &&
+ board->reg_shift == pci_boards[index].reg_shift &&
+ board->first_uart_offset == pci_boards[index].first_uart_offset;
}
/*
- * return an error code to refuse.
- *
- * serial_struct is 60 bytes.
+ * Probe one serial board. Unfortunately, there is no rhyme nor reason
+ * to the arrangement of serial ports on a PCI card.
*/
-static int __devinit pci_init_one(struct pci_dev *dev, const struct pci_device_id *ent)
+static int __devinit
+pci_init_one(struct pci_dev *dev, const struct pci_device_id *ent)
{
struct serial_private *priv;
struct pci_board *board, tmp;
struct serial_struct serial_req;
- int base_baud, rc, k;
+ int base_baud, rc, nr_ports, i;
if (ent->driver_data >= ARRAY_SIZE(pci_boards)) {
printk(KERN_ERR "pci_init_one: invalid driver_data: %ld\n",
if (rc)
return rc;
- if (ent->driver_data == pbn_default &&
- serial_pci_guess_board(dev, board)) {
- pci_disable_device(dev);
- return -ENODEV;
- } else if (serial_pci_guess_board(dev, &tmp) == 0) {
- printk(KERN_INFO "Redundant entry in serial pci_table. "
- "Please send the output of\n"
- "lspci -vv, this message (%d,%d,%d,%d)\n"
- "and the manufacturer and name of "
- "serial board or modem board\n"
- "to serial-pci-info@lists.sourceforge.net.\n",
- dev->vendor, dev->device,
- pci_get_subvendor(dev), pci_get_subdevice(dev));
+ if (ent->driver_data == pbn_default) {
+ /*
+ * Use a copy of the pci_board entry for this;
+ * avoid changing entries in the table.
+ */
+ memcpy(&tmp, board, sizeof(struct pci_board));
+ board = &tmp;
+
+ /*
+ * We matched one of our class entries. Try to
+ * determine the parameters of this board.
+ */
+ rc = serial_pci_guess_board(dev, board);
+ if (rc)
+ goto disable;
+ } else {
+ /*
+ * We matched an explicit entry. If we are able to
+ * detect this boards settings with our heuristic,
+ * then we no longer need this entry.
+ */
+ rc = serial_pci_guess_board(dev, &tmp);
+ if (rc == 0 && serial_pci_matches(board, pbn_default)) {
+ printk(KERN_INFO
+ "Redundant entry in serial pci_table. Please send the output\n"
+ "of lspci -vv, this message (0x%04x,0x%04x,0x%04x,0x%04x),\n"
+ "the manufacturer and name of serial board or modem board to\n"
+ "rmk@arm.linux.org.uk.\n",
+ dev->vendor, dev->device,
+ pci_get_subvendor(dev), pci_get_subdevice(dev));
+ }
}
- priv = kmalloc(sizeof(struct serial_private) +
- sizeof(unsigned int) * board->num_ports,
- GFP_KERNEL);
- if (!priv) {
- pci_disable_device(dev);
- return -ENOMEM;
- }
+ nr_ports = board->num_ports;
/*
- * Run the initialization function, if any
+ * Run the initialization function, if any. The initialization
+ * function returns:
+ * <0 - error
+ * 0 - use board->num_ports
+ * >0 - number of ports
*/
if (board->init_fn) {
- rc = board->init_fn(dev, board, 1);
- if (rc != 0) {
- pci_disable_device(dev);
- kfree(priv);
- return rc;
- }
+ rc = board->init_fn(dev, 1);
+ if (rc < 0)
+ goto disable;
+
+ if (rc)
+ nr_ports = rc;
+ }
+
+ priv = kmalloc(sizeof(struct serial_private) +
+ sizeof(unsigned int) * nr_ports,
+ GFP_KERNEL);
+ if (!priv) {
+ rc = -ENOMEM;
+ goto deinit;
}
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++) {
- serial_req.irq = get_pci_irq(dev, board, k);
- if (get_pci_port(dev, board, &serial_req, k))
+ for (i = 0; i < nr_ports; i++) {
+ serial_req.irq = get_pci_irq(dev, board, i);
+ if (get_pci_port(dev, board, &serial_req, i))
break;
#ifdef SERIAL_DEBUG_PCI
- printk("Setup PCI/PNP port: port %x, irq %d, type %d\n",
+ printk("Setup PCI port: port %x, irq %d, type %d\n",
serial_req.port, serial_req.irq, serial_req.io_type);
#endif
serial_req.flags = ASYNC_SKIP_TEST | ASYNC_AUTOPROBE;
serial_req.baud_base = base_baud;
- priv->line[k] = register_serial(&serial_req);
- if (priv->line[k] < 0)
+ priv->line[i] = register_serial(&serial_req);
+ if (priv->line[i] < 0)
break;
}
priv->board = board;
- priv->nr = k;
+ priv->nr = i;
pci_set_drvdata(dev, priv);
return 0;
+
+ free:
+ kfree(priv);
+ deinit:
+ if (board->init_fn)
+ board->init_fn(dev, 0);
+ disable:
+ pci_disable_device(dev);
+ return rc;
}
static void __devexit pci_remove_one(struct pci_dev *dev)
unregister_serial(priv->line[i]);
if (priv->board->init_fn)
- priv->board->init_fn(dev, priv->board, 0);
+ priv->board->init_fn(dev, 0);
pci_disable_device(dev);
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_dci_pccom8 },
+ /*
+ * These entries match devices with class
+ * COMMUNICATION_SERIAL, COMMUNICATION_MODEM
+ * or COMMUNICATION_MULTISERIAL
+ */
{ PCI_ANY_ID, PCI_ANY_ID,
PCI_ANY_ID, PCI_ANY_ID,
PCI_CLASS_COMMUNICATION_SERIAL << 8,
- 0xffff00, },
+ 0xffff00, pbn_default },
{ PCI_ANY_ID, PCI_ANY_ID,
PCI_ANY_ID, PCI_ANY_ID,
PCI_CLASS_COMMUNICATION_MODEM << 8,
- 0xffff00, },
+ 0xffff00, pbn_default },
{ PCI_ANY_ID, PCI_ANY_ID,
PCI_ANY_ID, PCI_ANY_ID,
PCI_CLASS_COMMUNICATION_MULTISERIAL << 8,
- 0xffff00, },
+ 0xffff00, pbn_default },
{ 0, }
};
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