static int __devexit pio2_remove(struct vme_dev *vdev)
{
int vec;
int i;
struct pio2_card *card = dev_get_drvdata(&vdev->dev);
pio2_gpio_exit(card);
for (i = 0; i < 6; i++) {
vec = card->irq_vector | PIO2_VECTOR_CNTR[i];
vme_irq_free(vdev, card->irq_level, vec);
}
for (i = 0; i < 4; i++) {
vec = card->irq_vector | PIO2_VECTOR_BANK[i];
vme_irq_free(vdev, card->irq_level, vec);
}
vec = (card->irq_vector & PIO2_VME_VECTOR_MASK) | PIO2_VME_VECTOR_SPUR;
vme_irq_free(vdev, card->irq_level, vec);
pio2_reset_card(card);
vme_master_set(card->window, 0, 0, 0, VME_A16, 0, VME_D16);
vme_master_free(card->window);
kfree(card);
return 0;
}
static int __devinit pio2_probe(struct vme_dev *vdev)
{
struct pio2_card *card;
int retval;
int i;
u8 reg;
int vec;
card = kzalloc(sizeof(struct pio2_card), GFP_KERNEL);
if (card == NULL) {
dev_err(&vdev->dev, "Unable to allocate card structure\n");
retval = -ENOMEM;
goto err_struct;
}
card->id = vdev->num;
card->bus = bus[card->id];
card->base = base[card->id];
card->irq_vector = vector[card->id];
card->irq_level = level[card->id] & PIO2_VME_INT_MASK;
strncpy(card->variant, variant[card->id], PIO2_VARIANT_LENGTH);
card->vdev = vdev;
for (i = 0; i < PIO2_VARIANT_LENGTH; i++) {
if (isdigit(card->variant[i]) == 0) {
dev_err(&card->vdev->dev, "Variant invalid\n");
retval = -EINVAL;
goto err_variant;
}
}
/*
* Bottom 4 bits of VME interrupt vector used to determine source,
* provided vector should only use upper 4 bits.
*/
if (card->irq_vector & ~PIO2_VME_VECTOR_MASK) {
dev_err(&card->vdev->dev,
"Invalid VME IRQ Vector, vector must not use lower 4 bits\n");
retval = -EINVAL;
goto err_vector;
}
/*
* There is no way to determine the build variant or whether each bank
* is input, output or both at run time. The inputs are also inverted
* if configured as both.
*
* We pass in the board variant and use that to determine the
* configuration of the banks.
*/
for (i = 1; i < PIO2_VARIANT_LENGTH; i++) {
switch (card->variant[i]) {
case '0':
card->bank[i-1].config = NOFIT;
break;
case '1':
case '2':
case '3':
case '4':
card->bank[i-1].config = INPUT;
break;
case '5':
card->bank[i-1].config = OUTPUT;
break;
case '6':
case '7':
case '8':
case '9':
card->bank[i-1].config = BOTH;
break;
}
}
/* Get a master window and position over regs */
card->window = vme_master_request(vdev, VME_A24, VME_SCT, VME_D16);
if (card->window == NULL) {
dev_err(&card->vdev->dev,
"Unable to assign VME master resource\n");
retval = -EIO;
goto err_window;
}
retval = vme_master_set(card->window, 1, card->base, 0x10000, VME_A24,
(VME_SCT | VME_USER | VME_DATA), VME_D16);
if (retval) {
dev_err(&card->vdev->dev,
"Unable to configure VME master resource\n");
goto err_set;
}
/*
* There is also no obvious register which we can probe to determine
* whether the provided base is valid. If we can read the "ID Register"
* offset and the reset function doesn't error, assume we have a valid
* location.
*/
retval = vme_master_read(card->window, ®, 1, PIO2_REGS_ID);
if (retval < 0) {
dev_err(&card->vdev->dev, "Unable to read from device\n");
goto err_read;
}
dev_dbg(&card->vdev->dev, "ID Register:%x\n", reg);
/*
* Ensure all the I/O is cleared. We can't read back the states, so
* this is the only method we have to ensure that the I/O is in a known
* state.
*/
retval = pio2_reset_card(card);
if (retval) {
dev_err(&card->vdev->dev,
"Failed to reset card, is location valid?");
retval = -ENODEV;
goto err_reset;
}
/* Configure VME Interrupts */
reg = card->irq_level;
if (pio2_get_led(card))
reg |= PIO2_LED;
if (loopback)
reg |= PIO2_LOOP;
retval = vme_master_write(card->window, ®, 1, PIO2_REGS_CTRL);
if (retval < 0)
return retval;
/* Set VME vector */
retval = vme_master_write(card->window, &card->irq_vector, 1,
PIO2_REGS_VME_VECTOR);
if (retval < 0)
return retval;
/* Attach spurious interrupt handler. */
vec = card->irq_vector | PIO2_VME_VECTOR_SPUR;
retval = vme_irq_request(vdev, card->irq_level, vec,
&pio2_int, (void *)card);
if (retval < 0) {
dev_err(&card->vdev->dev,
"Unable to attach VME interrupt vector0x%x, level 0x%x\n",
vec, card->irq_level);
goto err_irq;
}
/* Attach GPIO interrupt handlers. */
for (i = 0; i < 4; i++) {
vec = card->irq_vector | PIO2_VECTOR_BANK[i];
retval = vme_irq_request(vdev, card->irq_level, vec,
&pio2_int, (void *)card);
if (retval < 0) {
dev_err(&card->vdev->dev,
"Unable to attach VME interrupt vector0x%x, level 0x%x\n",
vec, card->irq_level);
goto err_gpio_irq;
}
}
/* Attach counter interrupt handlers. */
for (i = 0; i < 6; i++) {
vec = card->irq_vector | PIO2_VECTOR_CNTR[i];
retval = vme_irq_request(vdev, card->irq_level, vec,
&pio2_int, (void *)card);
if (retval < 0) {
dev_err(&card->vdev->dev,
"Unable to attach VME interrupt vector0x%x, level 0x%x\n",
vec, card->irq_level);
goto err_cntr_irq;
}
}
/* Register IO */
retval = pio2_gpio_init(card);
if (retval < 0) {
dev_err(&card->vdev->dev,
"Unable to register with GPIO framework\n");
goto err_gpio;
}
/* Set LED - This also sets interrupt level */
retval = pio2_set_led(card, 0);
if (retval < 0) {
dev_err(&card->vdev->dev, "Unable to set LED\n");
goto err_led;
}
dev_set_drvdata(&card->vdev->dev, card);
dev_info(&card->vdev->dev,
"PIO2 (variant %s) configured at 0x%lx\n", card->variant,
card->base);
return 0;
err_led:
pio2_gpio_exit(card);
err_gpio:
i = 6;
err_cntr_irq:
while (i > 0) {
i--;
vec = card->irq_vector | PIO2_VECTOR_CNTR[i];
vme_irq_free(vdev, card->irq_level, vec);
}
i = 4;
err_gpio_irq:
while (i > 0) {
i--;
vec = card->irq_vector | PIO2_VECTOR_BANK[i];
vme_irq_free(vdev, card->irq_level, vec);
}
vec = (card->irq_vector & PIO2_VME_VECTOR_MASK) | PIO2_VME_VECTOR_SPUR;
vme_irq_free(vdev, card->irq_level, vec);
err_irq:
pio2_reset_card(card);
err_reset:
err_read:
vme_master_set(card->window, 0, 0, 0, VME_A16, 0, VME_D16);
err_set:
vme_master_free(card->window);
err_window:
err_vector:
err_variant:
kfree(card);
err_struct:
return retval;
}
/*
* The ioctls provided by the old VME access method (the one at vmelinux.org)
* are most certainly wrong as the effectively push the registers layout
* through to user space. Given that the VME core can handle multiple bridges,
* with different register layouts this is most certainly not the way to go.
*
* We aren't using the structures defined in the Motorola driver either - these
* are also quite low level, however we should use the definitions that have
* already been defined.
*/
static int vme_user_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct vme_master master;
struct vme_slave slave;
unsigned long copied;
unsigned int minor = MINOR(inode->i_rdev);
int retval;
dma_addr_t pci_addr;
statistics.ioctls++;
switch (type[minor]) {
case CONTROL_MINOR:
break;
case MASTER_MINOR:
switch (cmd) {
case VME_GET_MASTER:
memset(&master, 0, sizeof(struct vme_master));
/* XXX We do not want to push aspace, cycle and width
* to userspace as they are
*/
retval = vme_master_get(image[minor].resource,
&(master.enable), &(master.vme_addr),
&(master.size), &(master.aspace),
&(master.cycle), &(master.dwidth));
copied = copy_to_user((char *)arg, &master,
sizeof(struct vme_master));
if (copied != 0) {
printk(KERN_WARNING "Partial copy to "
"userspace\n");
return -EFAULT;
}
return retval;
break;
case VME_SET_MASTER:
copied = copy_from_user(&master, (char *)arg,
sizeof(master));
if (copied != 0) {
printk(KERN_WARNING "Partial copy from "
"userspace\n");
return -EFAULT;
}
/* XXX We do not want to push aspace, cycle and width
* to userspace as they are
*/
return vme_master_set(image[minor].resource,
master.enable, master.vme_addr, master.size,
master.aspace, master.cycle, master.dwidth);
break;
}
break;
case SLAVE_MINOR:
switch (cmd) {
case VME_GET_SLAVE:
memset(&slave, 0, sizeof(struct vme_slave));
/* XXX We do not want to push aspace, cycle and width
* to userspace as they are
*/
retval = vme_slave_get(image[minor].resource,
&(slave.enable), &(slave.vme_addr),
&(slave.size), &pci_addr, &(slave.aspace),
&(slave.cycle));
copied = copy_to_user((char *)arg, &slave,
sizeof(struct vme_slave));
if (copied != 0) {
printk(KERN_WARNING "Partial copy to "
"userspace\n");
return -EFAULT;
}
return retval;
break;
case VME_SET_SLAVE:
copied = copy_from_user(&slave, (char *)arg,
sizeof(slave));
if (copied != 0) {
printk(KERN_WARNING "Partial copy from "
"userspace\n");
return -EFAULT;
}
/* XXX We do not want to push aspace, cycle and width
* to userspace as they are
*/
return vme_slave_set(image[minor].resource,
slave.enable, slave.vme_addr, slave.size,
image[minor].pci_buf, slave.aspace,
slave.cycle);
break;
}
break;
}
return -EINVAL;
}
