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/*
* Copyright (C) 2011 Samsung Electronics.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*
*/
#include "headers.h"
#include "download.h"
static irqreturn_t wimax_hostwake_isr(int irq, void *dev)
{
struct net_adapter *adapter = dev;
wake_lock_timeout(&adapter->pdata->g_cfg->wimax_wake_lock, 1 * HZ);
return IRQ_HANDLED;
}
static int cmc732_setup_wake_irq(struct net_adapter *adapter)
{
struct wimax732_platform_data *pdata = adapter->pdata;
int rc;
int irq;
rc = gpio_request(pdata->wimax_int, "gpio_wimax_int");
if (rc < 0) {
pr_debug("%s: gpio %d request failed (%d)\n",
__func__, pdata->wimax_int, rc);
return rc;
}
rc = gpio_direction_input(pdata->wimax_int);
if (rc < 0) {
pr_debug("%s: failed to set gpio %d as input (%d)\n",
__func__, pdata->wimax_int, rc);
goto err_gpio_direction_input;
}
irq = gpio_to_irq(pdata->wimax_int);
rc = request_threaded_irq(irq, NULL, wimax_hostwake_isr,
IRQF_TRIGGER_FALLING, "wimax_int", adapter);
if (rc < 0) {
pr_debug("%s: request_irq(%d) failed for gpio %d (%d)\n",
__func__, irq,
pdata->wimax_int, rc);
goto err_request_irq;
}
rc = enable_irq_wake(irq);
if (rc < 0) {
pr_err("%s: enable_irq_wake(%d) failed for gpio %d (%d)\n",
__func__, irq, pdata->wimax_int, rc);
goto err_enable_irq_wake;
}
adapter->wake_irq = irq;
return 0;
err_enable_irq_wake:
free_irq(irq, adapter);
err_request_irq:
err_gpio_direction_input:
gpio_free(pdata->wimax_int);
return rc;
}
static void cmc732_release_wake_irq(struct net_adapter *adapter)
{
if (!adapter->wake_irq)
return;
disable_irq_wake(adapter->wake_irq);
free_irq(adapter->wake_irq, adapter);
gpio_free(adapter->pdata->wimax_int);
}
int wimax_hw_start(struct net_adapter *adapter)
{
int retry = 0;
struct wimax732_platform_data *pdata = adapter->pdata;
pdata->g_cfg->wimax_status = WIMAX_STATE_READY;
adapter->download_complete = false;
adapter->rx_task = kthread_create(
cmc732_receive_thread, adapter, "%s",
"cmc732_receive_thread");
adapter->tx_task = kthread_create(
cmc732_send_thread, adapter, "%s",
"cmc732_send_thread");
init_waitqueue_head(&adapter->receive_event);
init_waitqueue_head(&adapter->send_event);
if (adapter->rx_task && adapter->tx_task) {
wake_up_process(adapter->rx_task);
wake_up_process(adapter->tx_task);
} else {
pr_debug("Unable to create send-receive threads");
return STATUS_UNSUCCESSFUL;
}
if (load_wimax_image(pdata->g_cfg->wimax_mode, adapter))
return STATUS_UNSUCCESSFUL;
if (adapter->downloading) {
while (!adapter->modem_resp) {
send_cmd_packet(adapter, MSG_DRIVER_OK_REQ);
wait_event_interruptible_timeout(
adapter->modem_resp_event,
adapter->modem_resp,
HZ/10);
if (!adapter->modem_resp)
pr_err("no modem response");
if (++retry > MODEM_RESP_RETRY)
goto download_fail;
}
switch (wait_event_interruptible_timeout(
adapter->download_event,
(adapter->download_complete),
HZ*FWDOWNLOAD_TIMEOUT)) {
case 0:
/* timeout */
pr_debug("Error wimax_hw_start : \
F/W Download timeout failed");
goto download_fail;
case -ERESTARTSYS:
/* Interrupted by signal */
pr_debug("Error wimax_hw_start :"
"-ERESTARTSYS retry");
goto download_fail;
default:
/* normal condition check */
if (adapter->removed || adapter->halted) {
pr_debug("Error wimax_hw_start : \
F/W Download surprise removed");
goto download_fail;
}
pr_debug("wimax_hw_start : F/W Download Complete");
unload_wimax_image(adapter);
if (cmc732_setup_wake_irq(adapter) < 0)
pr_debug("wimax_hw_start :"
"Error setting up wimax_int");
break;
}
adapter->downloading = false;
}
return STATUS_SUCCESS;
download_fail:
adapter->halted = true;
wake_up_interruptible(&adapter->receive_event);
msleep(20);
unload_wimax_image(adapter);
return STATUS_UNSUCCESSFUL;
}
int wimax_hw_stop(struct net_adapter *adapter)
{
adapter->halted = true;
/*Remove wakeup interrupt*/
cmc732_release_wake_irq(adapter);
/* Stop Sdio Interface */
sdio_claim_host(adapter->func);
sdio_release_irq(adapter->func);
sdio_disable_func(adapter->func);
sdio_release_host(adapter->func);
return STATUS_SUCCESS;
}
int wimax_hw_init(struct net_adapter *adapter)
{
struct wimax732_platform_data *pdata = adapter->pdata;
/* set pdata->wimax_wakeup & pdata->wimax_if_mode0 */
pdata->set_mode();
/* initilize hardware info structure */
memset(&adapter->hw, 0x0, sizeof(struct hardware_info));
adapter->hw.receive_buffer = kzalloc(SDIO_BANK_SIZE, GFP_KERNEL);
if (adapter->hw.receive_buffer == NULL) {
pr_debug("kmalloc fail!!");
return -ENOMEM;
}
/* For sending data and control packets */
INIT_LIST_HEAD(&adapter->hw.q_send);
spin_lock_init(&adapter->hw.lock);
init_waitqueue_head(&adapter->download_event);
init_waitqueue_head(&adapter->modem_resp_event);
init_completion(&adapter->wakeup_event);
return STATUS_SUCCESS;
}
void wimax_hw_remove(struct net_adapter *adapter)
{
struct buffer_descriptor *bufdsc;
struct list_head *pos, *nxt;
list_for_each_safe(pos, nxt, &adapter->hw.q_send) {
bufdsc = list_entry(pos, struct buffer_descriptor, list);
list_del(pos);
kfree(bufdsc->buffer);
kfree(bufdsc);
}
if (adapter->hw.receive_buffer != NULL)
kfree(adapter->hw.receive_buffer);
}
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