95cb3656c0
It was pointed out by 'make versioncheck' that some includes of linux/version.h are not needed in drivers/net/. This patch removes them. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: David S. Miller <davem@davemloft.net>
128 lines
3.1 KiB
C
128 lines
3.1 KiB
C
/*
|
|
* Copyright (C) ST-Ericsson AB 2010
|
|
* Contact: Sjur Brendeland / sjur.brandeland@stericsson.com
|
|
* Author: Amarnath Revanna / amarnath.bangalore.revanna@stericsson.com
|
|
* License terms: GNU General Public License (GPL) version 2
|
|
*/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ":" fmt
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/netdevice.h>
|
|
#include <mach/mbox-db5500.h>
|
|
#include <net/caif/caif_shm.h>
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("CAIF Shared Memory protocol driver");
|
|
|
|
#define MAX_SHM_INSTANCES 1
|
|
|
|
enum {
|
|
MBX_ACC0,
|
|
MBX_ACC1,
|
|
MBX_DSP
|
|
};
|
|
|
|
static struct shmdev_layer shmdev_lyr[MAX_SHM_INSTANCES];
|
|
|
|
static unsigned int shm_start;
|
|
static unsigned int shm_size;
|
|
|
|
module_param(shm_size, uint , 0440);
|
|
MODULE_PARM_DESC(shm_total_size, "Start of SHM shared memory");
|
|
|
|
module_param(shm_start, uint , 0440);
|
|
MODULE_PARM_DESC(shm_total_start, "Total Size of SHM shared memory");
|
|
|
|
static int shmdev_send_msg(u32 dev_id, u32 mbx_msg)
|
|
{
|
|
/* Always block until msg is written successfully */
|
|
mbox_send(shmdev_lyr[dev_id].hmbx, mbx_msg, true);
|
|
return 0;
|
|
}
|
|
|
|
static int shmdev_mbx_setup(void *pshmdrv_cb, struct shmdev_layer *pshm_dev,
|
|
void *pshm_drv)
|
|
{
|
|
/*
|
|
* For UX5500, we have only 1 SHM instance which uses MBX0
|
|
* for communication with the peer modem
|
|
*/
|
|
pshm_dev->hmbx = mbox_setup(MBX_ACC0, pshmdrv_cb, pshm_drv);
|
|
|
|
if (!pshm_dev->hmbx)
|
|
return -ENODEV;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static int __init caif_shmdev_init(void)
|
|
{
|
|
int i, result;
|
|
|
|
/* Loop is currently overkill, there is only one instance */
|
|
for (i = 0; i < MAX_SHM_INSTANCES; i++) {
|
|
|
|
shmdev_lyr[i].shm_base_addr = shm_start;
|
|
shmdev_lyr[i].shm_total_sz = shm_size;
|
|
|
|
if (((char *)shmdev_lyr[i].shm_base_addr == NULL)
|
|
|| (shmdev_lyr[i].shm_total_sz <= 0)) {
|
|
pr_warn("ERROR,"
|
|
"Shared memory Address and/or Size incorrect"
|
|
", Bailing out ...\n");
|
|
result = -EINVAL;
|
|
goto clean;
|
|
}
|
|
|
|
pr_info("SHM AREA (instance %d) STARTS"
|
|
" AT %p\n", i, (char *)shmdev_lyr[i].shm_base_addr);
|
|
|
|
shmdev_lyr[i].shm_id = i;
|
|
shmdev_lyr[i].pshmdev_mbxsend = shmdev_send_msg;
|
|
shmdev_lyr[i].pshmdev_mbxsetup = shmdev_mbx_setup;
|
|
|
|
/*
|
|
* Finally, CAIF core module is called with details in place:
|
|
* 1. SHM base address
|
|
* 2. SHM size
|
|
* 3. MBX handle
|
|
*/
|
|
result = caif_shmcore_probe(&shmdev_lyr[i]);
|
|
if (result) {
|
|
pr_warn("ERROR[%d],"
|
|
"Could not probe SHM core (instance %d)"
|
|
" Bailing out ...\n", result, i);
|
|
goto clean;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
clean:
|
|
/*
|
|
* For now, we assume that even if one instance of SHM fails, we bail
|
|
* out of the driver support completely. For this, we need to release
|
|
* any memory allocated and unregister any instance of SHM net device.
|
|
*/
|
|
for (i = 0; i < MAX_SHM_INSTANCES; i++) {
|
|
if (shmdev_lyr[i].pshm_netdev)
|
|
unregister_netdev(shmdev_lyr[i].pshm_netdev);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static void __exit caif_shmdev_exit(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < MAX_SHM_INSTANCES; i++) {
|
|
caif_shmcore_remove(shmdev_lyr[i].pshm_netdev);
|
|
kfree((void *)shmdev_lyr[i].shm_base_addr);
|
|
}
|
|
|
|
}
|
|
|
|
module_init(caif_shmdev_init);
|
|
module_exit(caif_shmdev_exit);
|