mxser_new, pci probing
Finally, the intention of the patch serie: PCI probing for this driver.
add pci_driver structure, (un)register it and add some stuff, which this
needs. Remove pdev pointer from board structure, because it's no longer
needed.
Signed-off-by: Jiri Slaby <[email protected]>
---
commit f745e78bdca36ec5e27de25694a4417a45ffb5de
tree 5d5e7d4c5d7aff1e111582c4f2d4812f5c2c1cb7
parent 5c3719e8b660b2813c8db5bec5a963d2702ad4fc
author Jiri Slaby <[email protected]> Wed, 11 Oct 2006 22:46:41 +0200
committer Jiri Slaby <[email protected]> Wed, 11 Oct 2006 22:46:41 +0200
drivers/char/mxser_new.c | 175 +++++++++++++++++++++++-----------------------
1 files changed, 88 insertions(+), 87 deletions(-)
diff --git a/drivers/char/mxser_new.c b/drivers/char/mxser_new.c
index 8026047..8c62f80 100644
--- a/drivers/char/mxser_new.c
+++ b/drivers/char/mxser_new.c
@@ -283,8 +283,7 @@ struct mxser_port {
};
struct mxser_board {
- struct pci_dev *pdev; /* temporary (until pci probing) */
-
+ unsigned int idx;
int irq;
const struct mxser_cardinfo *info;
unsigned long vector;
@@ -2383,10 +2382,9 @@ static const struct tty_operations mxser
* The MOXA Smartio/Industio serial driver boot-time initialization code!
*/
-static void mxser_release_res(struct mxser_board *brd, unsigned int irq)
+static void mxser_release_res(struct mxser_board *brd, struct pci_dev *pdev,
+ unsigned int irq)
{
- struct pci_dev *pdev = brd->pdev;
-
if (irq)
free_irq(brd->irq, brd);
if (pdev != NULL) { /* PCI */
@@ -2399,7 +2397,8 @@ static void mxser_release_res(struct mxs
}
}
-static int __devinit mxser_initbrd(struct mxser_board *brd)
+static int __devinit mxser_initbrd(struct mxser_board *brd,
+ struct pci_dev *pdev)
{
struct mxser_port *info;
unsigned int i;
@@ -2450,7 +2449,7 @@ static int __devinit mxser_initbrd(struc
"conflict with another device.\n",
brd->info->name, brd->irq);
/* We hold resources, we need to release them. */
- mxser_release_res(brd, 0);
+ mxser_release_res(brd, pdev, 0);
return retval;
}
return 0;
@@ -2552,20 +2551,43 @@ static int __init mxser_get_ISA_conf(int
return brd->info->nports;
}
-static int __init mxser_get_PCI_conf(const struct pci_device_id *ent,
- struct mxser_board *brd, struct pci_dev *pdev)
+static int __devinit mxser_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
{
+ struct mxser_board *brd;
unsigned int i, j;
unsigned long ioaddress;
- int retval;
+ int retval = -EINVAL;
+
+ for (i = 0; i < MXSER_BOARDS; i++)
+ if (mxser_boards[i].info == NULL)
+ break;
+
+ if (i >= MXSER_BOARDS) {
+ printk(KERN_ERR "Too many Smartio/Industio family boards found "
+ "(maximum %d), board not configured\n", MXSER_BOARDS);
+ goto err;
+ }
+
+ brd = &mxser_boards[i];
+ brd->idx = i * MXSER_PORTS_PER_BOARD;
+ printk(KERN_INFO "Found MOXA %s board (BusNo=%d, DevNo=%d)\n",
+ mxser_cards[ent->driver_data].name,
+ pdev->bus->number, PCI_SLOT(pdev->devfn));
+
+ retval = pci_enable_device(pdev);
+ if (retval) {
+ printk(KERN_ERR "Moxa SmartI/O PCI enable fail !\n");
+ goto err;
+ }
/* io address */
- brd->info = &mxser_cards[ent->driver_data];
ioaddress = pci_resource_start(pdev, 2);
retval = pci_request_region(pdev, 2, "mxser(IO)");
if (retval)
goto err;
+ brd->info = &mxser_cards[ent->driver_data];
for (i = 0; i < brd->info->nports; i++)
brd->ports[i].ioaddr = ioaddress + 8 * i;
@@ -2612,20 +2634,50 @@ static int __init mxser_get_PCI_conf(con
brd->vector_mask |= (1 << i);
brd->ports[i].baud_base = 921600;
}
+
+ /* mxser_initbrd will hook ISR. */
+ if (mxser_initbrd(brd, pdev) < 0)
+ goto err_relvec;
+
+ for (i = 0; i < brd->info->nports; i++)
+ tty_register_device(mxvar_sdriver, brd->idx + i, &pdev->dev);
+
+ pci_set_drvdata(pdev, brd);
+
return 0;
+err_relvec:
+ pci_release_region(pdev, 3);
err_relio:
pci_release_region(pdev, 2);
+ brd->info = NULL;
err:
return retval;
}
+static void __devexit mxser_remove(struct pci_dev *pdev)
+{
+ struct mxser_board *brd = pci_get_drvdata(pdev);
+ unsigned int i;
+
+ for (i = 0; i < brd->info->nports; i++)
+ tty_unregister_device(mxvar_sdriver, brd->idx + i);
+
+ mxser_release_res(brd, pdev, 1);
+}
+
+static struct pci_driver mxser_driver = {
+ .name = "mxser",
+ .id_table = mxser_pcibrds,
+ .probe = mxser_probe,
+ .remove = __devexit_p(mxser_remove)
+};
+
static int __init mxser_module_init(void)
{
- struct pci_dev *pdev = NULL;
struct mxser_board *brd;
unsigned long cap;
unsigned int i, m, isaloop;
- int retval, b, n;
+ int retval, b;
pr_debug("Loading module mxser ...\n");
@@ -2696,87 +2748,31 @@ static int __init mxser_module_init(void
printk(KERN_ERR "Invalid I/O address, "
"board not configured\n");
+ brd->info = NULL;
continue;
}
- brd->pdev = NULL;
-
/* mxser_initbrd will hook ISR. */
- if (mxser_initbrd(brd) < 0)
- continue;
-
- for (i = 0; i < brd->info->nports; i++)
- tty_register_device(mxvar_sdriver,
- m * MXSER_PORTS_PER_BOARD + i, NULL);
-
- m++;
- }
-
- /* start finding PCI board here */
- n = ARRAY_SIZE(mxser_pcibrds) - 1;
- b = 0;
- while (b < n) {
- pdev = pci_get_device(mxser_pcibrds[b].vendor,
- mxser_pcibrds[b].device, pdev);
- if (pdev == NULL) {
- b++;
- continue;
- }
- printk(KERN_INFO "Found MOXA %s board(BusNo=%d,DevNo=%d)\n",
- mxser_cards[mxser_pcibrds[b].driver_data].name,
- pdev->bus->number, PCI_SLOT(pdev->devfn));
- if (m >= MXSER_BOARDS)
- printk(KERN_ERR
- "Too many Smartio/Industio family boards find "
- "(maximum %d), board not configured\n",
- MXSER_BOARDS);
- else {
- if (pci_enable_device(pdev)) {
- printk(KERN_ERR "Moxa SmartI/O PCI enable "
- "fail !\n");
- continue;
- }
- brd = &mxser_boards[m];
- brd->pdev = pdev;
- retval = mxser_get_PCI_conf(&mxser_pcibrds[b],
- brd, pdev);
- if (retval < 0) {
- if (retval == MXSER_ERR_IRQ)
- printk(KERN_ERR
- "Invalid interrupt number, "
- "board not configured\n");
- else if (retval == MXSER_ERR_IRQ_CONFLIT)
- printk(KERN_ERR
- "Invalid interrupt number, "
- "board not configured\n");
- else if (retval == MXSER_ERR_VECTOR)
- printk(KERN_ERR
- "Invalid interrupt vector, "
- "board not configured\n");
- else if (retval == MXSER_ERR_IOADDR)
- printk(KERN_ERR
- "Invalid I/O address, "
- "board not configured\n");
+ if (mxser_initbrd(brd, NULL) < 0) {
+ brd->info = NULL;
continue;
}
- /* mxser_initbrd will hook ISR. */
- if (mxser_initbrd(brd) < 0)
- continue;
+
+ brd->idx = m * MXSER_PORTS_PER_BOARD;
for (i = 0; i < brd->info->nports; i++)
- tty_register_device(mxvar_sdriver,
- m * MXSER_PORTS_PER_BOARD + i,
- &pdev->dev);
+ tty_register_device(mxvar_sdriver, brd->idx + i,
+ NULL);
m++;
- /* Keep an extra reference if we succeeded. It will
- be returned at unload time */
- pci_dev_get(pdev);
}
- }
- if (!m) {
- retval = -ENODEV;
- goto err_unr;
+ retval = pci_register_driver(&mxser_driver);
+ if (retval) {
+ printk(KERN_ERR "Can't register pci driver\n");
+ if (!m) {
+ retval = -ENODEV;
+ goto err_unr;
+ } /* else: we have some ISA cards under control */
}
pr_debug("Done.\n");
@@ -2791,18 +2787,23 @@ err_put:
static void __exit mxser_module_exit(void)
{
- unsigned int i;
+ unsigned int i, j;
pr_debug("Unloading module mxser ...\n");
- for (i = 0; i < MXSER_PORTS; i++)
- tty_unregister_device(mxvar_sdriver, i);
+ pci_unregister_driver(&mxser_driver);
+
+ for (i = 0; i < MXSER_BOARDS; i++) /* ISA remains */
+ if (mxser_boards[i].info != NULL)
+ for (j = 0; j < mxser_boards[i].info->nports; j++)
+ tty_unregister_device(mxvar_sdriver,
+ mxser_boards[i].idx + j);
tty_unregister_driver(mxvar_sdriver);
put_tty_driver(mxvar_sdriver);
for (i = 0; i < MXSER_BOARDS; i++)
if (mxser_boards[i].info != NULL)
- mxser_release_res(&mxser_boards[i], 1);
+ mxser_release_res(&mxser_boards[i], NULL, 1);
pr_debug("Done.\n");
}
-
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