/*
* Intel Wireless WiMAX Connection 2400m
* SDIO-specific i2400m driver definitions
*
*
* Copyright (C) 2007-2008 Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*
* Intel Corporation <linux-wimax@intel.com>
* Brian Bian <brian.bian@intel.com>
* Dirk Brandewie <dirk.j.brandewie@intel.com>
* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
* Yanir Lubetkin <yanirx.lubetkin@intel.com>
* - Initial implementation
*
*
* This driver implements the bus-specific part of the i2400m for
* SDIO. Check i2400m.h for a generic driver description.
*
* ARCHITECTURE
*
* This driver sits under the bus-generic i2400m driver, providing the
* connection to the device.
*
* When probed, all the function pointers are setup and then the
* bus-generic code called. The generic driver will then use the
* provided pointers for uploading firmware (i2400ms_bus_bm*() in
* sdio-fw.c) and then setting up the device (i2400ms_dev_*() in
* sdio.c).
*
* Once firmware is uploaded, TX functions (sdio-tx.c) are called when
* data is ready for transmission in the TX fifo; then the SDIO IRQ is
* fired and data is available (sdio-rx.c), it is sent to the generic
* driver for processing with i2400m_rx.
*/
#ifndef __I2400M_SDIO_H__
#define __I2400M_SDIO_H__
#include "i2400m.h"
/* Host-Device interface for SDIO */
enum {
I2400M_SDIO_BOOT_RETRIES = 3,
I2400MS_BLK_SIZE = 256,
I2400MS_PL_SIZE_MAX = 0x3E00,
I2400MS_DATA_ADDR = 0x0,
I2400MS_INTR_STATUS_ADDR = 0x13,
I2400MS_INTR_CLEAR_ADDR = 0x13,
I2400MS_INTR_ENABLE_ADDR = 0x14,
I2400MS_INTR_GET_SIZE_ADDR = 0x2C,
/* The number of ticks to wait for the device to signal that
* it is ready */
I2400MS_INIT_SLEEP_INTERVAL = 100,
/* How long to wait for the device to settle after reset */
I2400MS_SETTLE_TIME = 40,
/* The number of msec to wait for IOR after sending IOE */
IWMC3200_IOR_TIMEOUT = 10,
};
/**
* struct i2400ms - descriptor for a SDIO connected i2400m
*
* @i2400m: bus-generic i2400m implementation; has to be first (see
* it's documentation in i2400m.h).
*
* @func: pointer to our SDIO function
*
* @tx_worker: workqueue struct used to TX data when the bus-generic
* code signals packets are pending for transmission to the device.
*
* @tx_workqueue: workqeueue used for data TX; we don't use the
* system's workqueue as that might cause deadlocks with code in
* the bus-generic driver. The read/write operation to the queue
* is protected with spinlock (tx_lock in struct i2400m) to avoid
* the queue being destroyed in the middle of a the queue read/write
* operation.
*
* @debugfs_dentry: dentry for the SDIO specific debugfs files
*
* Note this value is set to NULL upon destruction; this is
* because some routinges use it to determine if we are inside the
* probe() path or some other path. When debugfs is disabled,
* creation sets the dentry to '(void*) -ENODEV', which is valid
* for the test.
*/
struct i2400ms {
struct i2400m i2400m; /* FIRST! See doc */
struct sdio_func *func;
struct work_struct tx_worker;
struct workqueue_struct *tx_workqueue;
char tx_wq_name[32];
struct dentry *debugfs_dentry;
wait_queue_head_t bm_wfa_wq;
int bm_wait_result;
size_t bm_ack_size;
/* Device is any of the iwmc3200 SKUs */
unsigned iwmc3200:1;
};
static inline
void i2400ms_init(struct i2400ms *i2400ms)
{
i2400m_init(&i2400ms->i2400m);
}
extern int i2400ms_rx_setup(struct i2400ms *);
extern void i2400ms_rx_release(struct i2400ms *);
extern ssize_t __i2400ms_rx_get_size(struct i2400ms *);
extern int i2400ms_tx_setup(struct i2400ms *);
extern void i2400ms_tx_release(struct i2400ms *);
extern void i2400ms_bus_tx_kick(struct i2400m *);
extern ssize_t i2400ms_bus_bm_cmd_send(struct i2400m *,
const struct i2400m_bootrom_header *,
size_t, int);
extern ssize_t i2400ms_bus_bm_wait_for_ack(struct i2400m *,
struct i2400m_bootrom_header *,
size_t);
extern void i2400ms_bus_bm_release(struct i2400m *);
extern int i2400ms_bus_bm_setup(struct i2400m *);
#endif /* #ifndef __I2400M_SDIO_H__ */
