summaryrefslogtreecommitdiff
path: root/drivers/staging/irda/net/ircomm/ircomm_param.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/staging/irda/net/ircomm/ircomm_param.c')
-rw-r--r--drivers/staging/irda/net/ircomm/ircomm_param.c501
1 files changed, 0 insertions, 501 deletions
diff --git a/drivers/staging/irda/net/ircomm/ircomm_param.c b/drivers/staging/irda/net/ircomm/ircomm_param.c
deleted file mode 100644
index 5728e76ca6d5..000000000000
--- a/drivers/staging/irda/net/ircomm/ircomm_param.c
+++ /dev/null
@@ -1,501 +0,0 @@
-/*********************************************************************
- *
- * Filename: ircomm_param.c
- * Version: 1.0
- * Description: Parameter handling for the IrCOMM protocol
- * Status: Experimental.
- * Author: Dag Brattli <dagb@cs.uit.no>
- * Created at: Mon Jun 7 10:25:11 1999
- * Modified at: Sun Jan 30 14:32:03 2000
- * Modified by: Dag Brattli <dagb@cs.uit.no>
- *
- * Copyright (c) 1999-2000 Dag Brattli, All Rights Reserved.
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- *
- ********************************************************************/
-
-#include <linux/gfp.h>
-#include <linux/workqueue.h>
-#include <linux/interrupt.h>
-
-#include <net/irda/irda.h>
-#include <net/irda/parameters.h>
-
-#include <net/irda/ircomm_core.h>
-#include <net/irda/ircomm_tty_attach.h>
-#include <net/irda/ircomm_tty.h>
-
-#include <net/irda/ircomm_param.h>
-
-static int ircomm_param_service_type(void *instance, irda_param_t *param,
- int get);
-static int ircomm_param_port_type(void *instance, irda_param_t *param,
- int get);
-static int ircomm_param_port_name(void *instance, irda_param_t *param,
- int get);
-static int ircomm_param_service_type(void *instance, irda_param_t *param,
- int get);
-static int ircomm_param_data_rate(void *instance, irda_param_t *param,
- int get);
-static int ircomm_param_data_format(void *instance, irda_param_t *param,
- int get);
-static int ircomm_param_flow_control(void *instance, irda_param_t *param,
- int get);
-static int ircomm_param_xon_xoff(void *instance, irda_param_t *param, int get);
-static int ircomm_param_enq_ack(void *instance, irda_param_t *param, int get);
-static int ircomm_param_line_status(void *instance, irda_param_t *param,
- int get);
-static int ircomm_param_dte(void *instance, irda_param_t *param, int get);
-static int ircomm_param_dce(void *instance, irda_param_t *param, int get);
-static int ircomm_param_poll(void *instance, irda_param_t *param, int get);
-
-static const pi_minor_info_t pi_minor_call_table_common[] = {
- { ircomm_param_service_type, PV_INT_8_BITS },
- { ircomm_param_port_type, PV_INT_8_BITS },
- { ircomm_param_port_name, PV_STRING }
-};
-static const pi_minor_info_t pi_minor_call_table_non_raw[] = {
- { ircomm_param_data_rate, PV_INT_32_BITS | PV_BIG_ENDIAN },
- { ircomm_param_data_format, PV_INT_8_BITS },
- { ircomm_param_flow_control, PV_INT_8_BITS },
- { ircomm_param_xon_xoff, PV_INT_16_BITS },
- { ircomm_param_enq_ack, PV_INT_16_BITS },
- { ircomm_param_line_status, PV_INT_8_BITS }
-};
-static const pi_minor_info_t pi_minor_call_table_9_wire[] = {
- { ircomm_param_dte, PV_INT_8_BITS },
- { ircomm_param_dce, PV_INT_8_BITS },
- { ircomm_param_poll, PV_NO_VALUE },
-};
-
-static const pi_major_info_t pi_major_call_table[] = {
- { pi_minor_call_table_common, 3 },
- { pi_minor_call_table_non_raw, 6 },
- { pi_minor_call_table_9_wire, 3 }
-/* { pi_minor_call_table_centronics } */
-};
-
-pi_param_info_t ircomm_param_info = { pi_major_call_table, 3, 0x0f, 4 };
-
-/*
- * Function ircomm_param_request (self, pi, flush)
- *
- * Queue a parameter for the control channel
- *
- */
-int ircomm_param_request(struct ircomm_tty_cb *self, __u8 pi, int flush)
-{
- unsigned long flags;
- struct sk_buff *skb;
- int count;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
-
- /* Make sure we don't send parameters for raw mode */
- if (self->service_type == IRCOMM_3_WIRE_RAW)
- return 0;
-
- spin_lock_irqsave(&self->spinlock, flags);
-
- skb = self->ctrl_skb;
- if (!skb) {
- skb = alloc_skb(256, GFP_ATOMIC);
- if (!skb) {
- spin_unlock_irqrestore(&self->spinlock, flags);
- return -ENOMEM;
- }
-
- skb_reserve(skb, self->max_header_size);
- self->ctrl_skb = skb;
- }
- /*
- * Inserting is a little bit tricky since we don't know how much
- * room we will need. But this should hopefully work OK
- */
- count = irda_param_insert(self, pi, skb_tail_pointer(skb),
- skb_tailroom(skb), &ircomm_param_info);
- if (count < 0) {
- net_warn_ratelimited("%s(), no room for parameter!\n",
- __func__);
- spin_unlock_irqrestore(&self->spinlock, flags);
- return -1;
- }
- skb_put(skb, count);
- pr_debug("%s(), skb->len=%d\n", __func__, skb->len);
-
- spin_unlock_irqrestore(&self->spinlock, flags);
-
- if (flush) {
- /* ircomm_tty_do_softint will take care of the rest */
- schedule_work(&self->tqueue);
- }
-
- return count;
-}
-
-/*
- * Function ircomm_param_service_type (self, buf, len)
- *
- * Handle service type, this function will both be called after the LM-IAS
- * query and then the remote device sends its initial parameters
- *
- */
-static int ircomm_param_service_type(void *instance, irda_param_t *param,
- int get)
-{
- struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance;
- __u8 service_type = (__u8) param->pv.i;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
-
- if (get) {
- param->pv.i = self->settings.service_type;
- return 0;
- }
-
- /* Find all common service types */
- service_type &= self->service_type;
- if (!service_type) {
- pr_debug("%s(), No common service type to use!\n", __func__);
- return -1;
- }
- pr_debug("%s(), services in common=%02x\n", __func__ ,
- service_type);
-
- /*
- * Now choose a preferred service type of those available
- */
- if (service_type & IRCOMM_CENTRONICS)
- self->settings.service_type = IRCOMM_CENTRONICS;
- else if (service_type & IRCOMM_9_WIRE)
- self->settings.service_type = IRCOMM_9_WIRE;
- else if (service_type & IRCOMM_3_WIRE)
- self->settings.service_type = IRCOMM_3_WIRE;
- else if (service_type & IRCOMM_3_WIRE_RAW)
- self->settings.service_type = IRCOMM_3_WIRE_RAW;
-
- pr_debug("%s(), resulting service type=0x%02x\n", __func__ ,
- self->settings.service_type);
-
- /*
- * Now the line is ready for some communication. Check if we are a
- * server, and send over some initial parameters.
- * Client do it in ircomm_tty_state_setup().
- * Note : we may get called from ircomm_tty_getvalue_confirm(),
- * therefore before we even have open any socket. And self->client
- * is initialised to TRUE only later. So, we check if the link is
- * really initialised. - Jean II
- */
- if ((self->max_header_size != IRCOMM_TTY_HDR_UNINITIALISED) &&
- (!self->client) &&
- (self->settings.service_type != IRCOMM_3_WIRE_RAW))
- {
- /* Init connection */
- ircomm_tty_send_initial_parameters(self);
- ircomm_tty_link_established(self);
- }
-
- return 0;
-}
-
-/*
- * Function ircomm_param_port_type (self, param)
- *
- * The port type parameter tells if the devices are serial or parallel.
- * Since we only advertise serial service, this parameter should only
- * be equal to IRCOMM_SERIAL.
- */
-static int ircomm_param_port_type(void *instance, irda_param_t *param, int get)
-{
- struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
-
- if (get)
- param->pv.i = IRCOMM_SERIAL;
- else {
- self->settings.port_type = (__u8) param->pv.i;
-
- pr_debug("%s(), port type=%d\n", __func__ ,
- self->settings.port_type);
- }
- return 0;
-}
-
-/*
- * Function ircomm_param_port_name (self, param)
- *
- * Exchange port name
- *
- */
-static int ircomm_param_port_name(void *instance, irda_param_t *param, int get)
-{
- struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
-
- if (get) {
- pr_debug("%s(), not imp!\n", __func__);
- } else {
- pr_debug("%s(), port-name=%s\n", __func__ , param->pv.c);
- strncpy(self->settings.port_name, param->pv.c, 32);
- }
-
- return 0;
-}
-
-/*
- * Function ircomm_param_data_rate (self, param)
- *
- * Exchange data rate to be used in this settings
- *
- */
-static int ircomm_param_data_rate(void *instance, irda_param_t *param, int get)
-{
- struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
-
- if (get)
- param->pv.i = self->settings.data_rate;
- else
- self->settings.data_rate = param->pv.i;
-
- pr_debug("%s(), data rate = %d\n", __func__ , param->pv.i);
-
- return 0;
-}
-
-/*
- * Function ircomm_param_data_format (self, param)
- *
- * Exchange data format to be used in this settings
- *
- */
-static int ircomm_param_data_format(void *instance, irda_param_t *param,
- int get)
-{
- struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
-
- if (get)
- param->pv.i = self->settings.data_format;
- else
- self->settings.data_format = (__u8) param->pv.i;
-
- return 0;
-}
-
-/*
- * Function ircomm_param_flow_control (self, param)
- *
- * Exchange flow control settings to be used in this settings
- *
- */
-static int ircomm_param_flow_control(void *instance, irda_param_t *param,
- int get)
-{
- struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
-
- if (get)
- param->pv.i = self->settings.flow_control;
- else
- self->settings.flow_control = (__u8) param->pv.i;
-
- pr_debug("%s(), flow control = 0x%02x\n", __func__ , (__u8)param->pv.i);
-
- return 0;
-}
-
-/*
- * Function ircomm_param_xon_xoff (self, param)
- *
- * Exchange XON/XOFF characters
- *
- */
-static int ircomm_param_xon_xoff(void *instance, irda_param_t *param, int get)
-{
- struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
-
- if (get) {
- param->pv.i = self->settings.xonxoff[0];
- param->pv.i |= self->settings.xonxoff[1] << 8;
- } else {
- self->settings.xonxoff[0] = (__u16) param->pv.i & 0xff;
- self->settings.xonxoff[1] = (__u16) param->pv.i >> 8;
- }
-
- pr_debug("%s(), XON/XOFF = 0x%02x,0x%02x\n", __func__ ,
- param->pv.i & 0xff, param->pv.i >> 8);
-
- return 0;
-}
-
-/*
- * Function ircomm_param_enq_ack (self, param)
- *
- * Exchange ENQ/ACK characters
- *
- */
-static int ircomm_param_enq_ack(void *instance, irda_param_t *param, int get)
-{
- struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
-
- if (get) {
- param->pv.i = self->settings.enqack[0];
- param->pv.i |= self->settings.enqack[1] << 8;
- } else {
- self->settings.enqack[0] = (__u16) param->pv.i & 0xff;
- self->settings.enqack[1] = (__u16) param->pv.i >> 8;
- }
-
- pr_debug("%s(), ENQ/ACK = 0x%02x,0x%02x\n", __func__ ,
- param->pv.i & 0xff, param->pv.i >> 8);
-
- return 0;
-}
-
-/*
- * Function ircomm_param_line_status (self, param)
- *
- *
- *
- */
-static int ircomm_param_line_status(void *instance, irda_param_t *param,
- int get)
-{
- pr_debug("%s(), not impl.\n", __func__);
-
- return 0;
-}
-
-/*
- * Function ircomm_param_dte (instance, param)
- *
- * If we get here, there must be some sort of null-modem connection, and
- * we are probably working in server mode as well.
- */
-static int ircomm_param_dte(void *instance, irda_param_t *param, int get)
-{
- struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance;
- __u8 dte;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
-
- if (get)
- param->pv.i = self->settings.dte;
- else {
- dte = (__u8) param->pv.i;
-
- self->settings.dce = 0;
-
- if (dte & IRCOMM_DELTA_DTR)
- self->settings.dce |= (IRCOMM_DELTA_DSR|
- IRCOMM_DELTA_RI |
- IRCOMM_DELTA_CD);
- if (dte & IRCOMM_DTR)
- self->settings.dce |= (IRCOMM_DSR|
- IRCOMM_RI |
- IRCOMM_CD);
-
- if (dte & IRCOMM_DELTA_RTS)
- self->settings.dce |= IRCOMM_DELTA_CTS;
- if (dte & IRCOMM_RTS)
- self->settings.dce |= IRCOMM_CTS;
-
- /* Take appropriate actions */
- ircomm_tty_check_modem_status(self);
-
- /* Null modem cable emulator */
- self->settings.null_modem = TRUE;
- }
-
- return 0;
-}
-
-/*
- * Function ircomm_param_dce (instance, param)
- *
- *
- *
- */
-static int ircomm_param_dce(void *instance, irda_param_t *param, int get)
-{
- struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance;
- __u8 dce;
-
- pr_debug("%s(), dce = 0x%02x\n", __func__ , (__u8)param->pv.i);
-
- dce = (__u8) param->pv.i;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
-
- self->settings.dce = dce;
-
- /* Check if any of the settings have changed */
- if (dce & 0x0f) {
- if (dce & IRCOMM_DELTA_CTS) {
- pr_debug("%s(), CTS\n", __func__);
- }
- }
-
- ircomm_tty_check_modem_status(self);
-
- return 0;
-}
-
-/*
- * Function ircomm_param_poll (instance, param)
- *
- * Called when the peer device is polling for the line settings
- *
- */
-static int ircomm_param_poll(void *instance, irda_param_t *param, int get)
-{
- struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
-
- /* Poll parameters are always of length 0 (just a signal) */
- if (!get) {
- /* Respond with DTE line settings */
- ircomm_param_request(self, IRCOMM_DTE, TRUE);
- }
- return 0;
-}
-
-
-
-
-
generated by cgit (git 2.34.1) at 2024-07-02 20:38:42 +0000