// SPDX-License-Identifier: GPL-2.0
|
/******************************************************************************
|
* rtl871x_io.c
|
*
|
* Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
|
* Linux device driver for RTL8192SU
|
*
|
* Modifications for inclusion into the Linux staging tree are
|
* Copyright(c) 2010 Larry Finger. All rights reserved.
|
*
|
* Contact information:
|
* WLAN FAE <wlanfae@realtek.com>
|
* Larry Finger <Larry.Finger@lwfinger.net>
|
*
|
******************************************************************************/
|
/*
|
*
|
* The purpose of rtl871x_io.c
|
*
|
* a. provides the API
|
* b. provides the protocol engine
|
* c. provides the software interface between caller and the hardware interface
|
*
|
* For r8712u, both sync/async operations are provided.
|
*
|
* Only sync read/write_mem operations are provided.
|
*
|
*/
|
|
#define _RTL871X_IO_C_
|
|
#include "osdep_service.h"
|
#include "drv_types.h"
|
#include "rtl871x_io.h"
|
#include "osdep_intf.h"
|
#include "usb_ops.h"
|
|
static uint _init_intf_hdl(struct _adapter *padapter,
|
struct intf_hdl *pintf_hdl)
|
{
|
struct intf_priv *pintf_priv;
|
void (*set_intf_option)(u32 *poption) = NULL;
|
void (*set_intf_funs)(struct intf_hdl *pintf_hdl);
|
void (*set_intf_ops)(struct _io_ops *pops);
|
uint (*init_intf_priv)(struct intf_priv *pintfpriv);
|
|
set_intf_option = &(r8712_usb_set_intf_option);
|
set_intf_funs = &(r8712_usb_set_intf_funs);
|
set_intf_ops = &r8712_usb_set_intf_ops;
|
init_intf_priv = &r8712_usb_init_intf_priv;
|
pintf_priv = pintf_hdl->pintfpriv = kmalloc(sizeof(struct intf_priv),
|
GFP_ATOMIC);
|
if (!pintf_priv)
|
goto _init_intf_hdl_fail;
|
pintf_hdl->adapter = (u8 *)padapter;
|
set_intf_option(&pintf_hdl->intf_option);
|
set_intf_funs(pintf_hdl);
|
set_intf_ops(&pintf_hdl->io_ops);
|
pintf_priv->intf_dev = (u8 *)&padapter->dvobjpriv;
|
if (init_intf_priv(pintf_priv) == _FAIL)
|
goto _init_intf_hdl_fail;
|
return _SUCCESS;
|
_init_intf_hdl_fail:
|
kfree(pintf_priv);
|
return _FAIL;
|
}
|
|
static void _unload_intf_hdl(struct intf_priv *pintfpriv)
|
{
|
void (*unload_intf_priv)(struct intf_priv *pintfpriv);
|
|
unload_intf_priv = &r8712_usb_unload_intf_priv;
|
unload_intf_priv(pintfpriv);
|
kfree(pintfpriv);
|
}
|
|
static uint register_intf_hdl(u8 *dev, struct intf_hdl *pintfhdl)
|
{
|
struct _adapter *adapter = (struct _adapter *)dev;
|
|
pintfhdl->intf_option = 0;
|
pintfhdl->adapter = dev;
|
pintfhdl->intf_dev = (u8 *)&adapter->dvobjpriv;
|
if (!_init_intf_hdl(adapter, pintfhdl))
|
goto register_intf_hdl_fail;
|
return _SUCCESS;
|
register_intf_hdl_fail:
|
return false;
|
}
|
|
static void unregister_intf_hdl(struct intf_hdl *pintfhdl)
|
{
|
_unload_intf_hdl(pintfhdl->pintfpriv);
|
memset((u8 *)pintfhdl, 0, sizeof(struct intf_hdl));
|
}
|
|
uint r8712_alloc_io_queue(struct _adapter *adapter)
|
{
|
u32 i;
|
struct io_queue *pio_queue;
|
struct io_req *pio_req;
|
|
pio_queue = kmalloc(sizeof(*pio_queue), GFP_ATOMIC);
|
if (!pio_queue)
|
goto alloc_io_queue_fail;
|
INIT_LIST_HEAD(&pio_queue->free_ioreqs);
|
INIT_LIST_HEAD(&pio_queue->processing);
|
INIT_LIST_HEAD(&pio_queue->pending);
|
spin_lock_init(&pio_queue->lock);
|
pio_queue->pallocated_free_ioreqs_buf = kzalloc(NUM_IOREQ *
|
(sizeof(struct io_req)) + 4,
|
GFP_ATOMIC);
|
if ((pio_queue->pallocated_free_ioreqs_buf) == NULL)
|
goto alloc_io_queue_fail;
|
pio_queue->free_ioreqs_buf = pio_queue->pallocated_free_ioreqs_buf + 4
|
- ((addr_t)(pio_queue->pallocated_free_ioreqs_buf)
|
& 3);
|
pio_req = (struct io_req *)(pio_queue->free_ioreqs_buf);
|
for (i = 0; i < NUM_IOREQ; i++) {
|
INIT_LIST_HEAD(&pio_req->list);
|
list_add_tail(&pio_req->list, &pio_queue->free_ioreqs);
|
pio_req++;
|
}
|
if ((register_intf_hdl((u8 *)adapter, &pio_queue->intf)) == _FAIL)
|
goto alloc_io_queue_fail;
|
adapter->pio_queue = pio_queue;
|
return _SUCCESS;
|
alloc_io_queue_fail:
|
if (pio_queue) {
|
kfree(pio_queue->pallocated_free_ioreqs_buf);
|
kfree(pio_queue);
|
}
|
adapter->pio_queue = NULL;
|
return _FAIL;
|
}
|
|
void r8712_free_io_queue(struct _adapter *adapter)
|
{
|
struct io_queue *pio_queue = adapter->pio_queue;
|
|
if (pio_queue) {
|
kfree(pio_queue->pallocated_free_ioreqs_buf);
|
adapter->pio_queue = NULL;
|
unregister_intf_hdl(&pio_queue->intf);
|
kfree(pio_queue);
|
}
|
}
|
