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sparc64: vcc: Add install & cleanup TTY operations
Add handlers to support TTY install & cleanup operations Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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1 changed files with 73 additions and 0 deletions
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@ -487,6 +487,8 @@ static struct vio_version vcc_versions[] = {
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{ .major = 1, .minor = 0 },
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{ .major = 1, .minor = 0 },
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};
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};
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static struct tty_port_operations vcc_port_ops = { 0 };
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static ssize_t vcc_sysfs_domain_show(struct device *dev,
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static ssize_t vcc_sysfs_domain_show(struct device *dev,
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struct device_attribute *attr,
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struct device_attribute *attr,
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char *buf)
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char *buf)
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@ -994,6 +996,75 @@ static int vcc_break_ctl(struct tty_struct *tty, int state)
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return 0;
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return 0;
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}
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}
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static int vcc_install(struct tty_driver *driver, struct tty_struct *tty)
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{
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struct vcc_port *port_vcc;
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struct tty_port *port_tty;
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int ret;
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if (unlikely(!tty)) {
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pr_err("VCC: install: Invalid TTY handle\n");
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return -ENXIO;
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}
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if (tty->index >= VCC_MAX_PORTS)
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return -EINVAL;
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ret = tty_standard_install(driver, tty);
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if (ret)
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return ret;
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port_tty = kzalloc(sizeof(struct tty_port), GFP_KERNEL);
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if (!port_tty)
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return -ENOMEM;
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port_vcc = vcc_get(tty->index, true);
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if (!port_vcc) {
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pr_err("VCC: install: Failed to find VCC port\n");
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tty->port = NULL;
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kfree(port_tty);
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return -ENODEV;
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}
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tty_port_init(port_tty);
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port_tty->ops = &vcc_port_ops;
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tty->port = port_tty;
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port_vcc->tty = tty;
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vcc_put(port_vcc, true);
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return 0;
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}
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static void vcc_cleanup(struct tty_struct *tty)
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{
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struct vcc_port *port;
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if (unlikely(!tty)) {
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pr_err("VCC: cleanup: Invalid TTY handle\n");
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return;
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}
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port = vcc_get(tty->index, true);
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if (port) {
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port->tty = NULL;
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if (port->removed) {
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vcc_table_remove(tty->index);
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kfree(port->vio.name);
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kfree(port->domain);
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kfree(port);
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} else {
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vcc_put(port, true);
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}
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}
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tty_port_destroy(tty->port);
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kfree(tty->port);
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tty->port = NULL;
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}
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static const struct tty_operations vcc_ops = {
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static const struct tty_operations vcc_ops = {
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.open = vcc_open,
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.open = vcc_open,
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.close = vcc_close,
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.close = vcc_close,
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@ -1002,6 +1073,8 @@ static const struct tty_operations vcc_ops = {
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.write_room = vcc_write_room,
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.write_room = vcc_write_room,
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.chars_in_buffer = vcc_chars_in_buffer,
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.chars_in_buffer = vcc_chars_in_buffer,
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.break_ctl = vcc_break_ctl,
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.break_ctl = vcc_break_ctl,
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.install = vcc_install,
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.cleanup = vcc_cleanup,
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};
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};
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#define VCC_TTY_FLAGS (TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_REAL_RAW)
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#define VCC_TTY_FLAGS (TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_REAL_RAW)
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