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//------------------------------------------------------------------------------
// <copyright file="hif_internal.h" company="Atheros">
// Copyright (c) 2004-2010 Atheros Corporation. All rights reserved.
//
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
//
//------------------------------------------------------------------------------
//==============================================================================
// internal header file for hif layer
//
// Author(s): ="Atheros"
//==============================================================================
#ifndef _HIF_INTERNAL_H_
#define _HIF_INTERNAL_H_
#include "a_config.h"
#include "athdefs.h"
#include "a_osapi.h"
#include "hif.h"
#include "../../../common/hif_sdio_common.h"
#include <linux/scatterlist.h>
#define HIF_LINUX_MMC_SCATTER_SUPPORT
#define BUS_REQUEST_MAX_NUM 64
#define SDIO_CLOCK_FREQUENCY_DEFAULT 25000000
#define SDWLAN_ENABLE_DISABLE_TIMEOUT 20
#define FLAGS_CARD_ENAB 0x02
#define FLAGS_CARD_IRQ_UNMSK 0x04
#define HIF_MBOX_BLOCK_SIZE HIF_DEFAULT_IO_BLOCK_SIZE
#define HIF_MBOX0_BLOCK_SIZE 1
#define HIF_MBOX1_BLOCK_SIZE HIF_MBOX_BLOCK_SIZE
#define HIF_MBOX2_BLOCK_SIZE HIF_MBOX_BLOCK_SIZE
#define HIF_MBOX3_BLOCK_SIZE HIF_MBOX_BLOCK_SIZE
typedef struct bus_request {
struct bus_request *next; /* link list of available requests */
struct bus_request *inusenext; /* link list of in use requests */
struct semaphore sem_req;
u32 address; /* request data */
u8 *buffer;
u32 length;
u32 request;
void *context;
int status;
struct hif_scatter_req_priv *pScatterReq; /* this request is a scatter request */
} BUS_REQUEST;
struct hif_device {
struct sdio_func *func;
spinlock_t asynclock;
struct task_struct* async_task; /* task to handle async commands */
struct semaphore sem_async; /* wake up for async task */
int async_shutdown; /* stop the async task */
struct completion async_completion; /* thread completion */
BUS_REQUEST *asyncreq; /* request for async tasklet */
BUS_REQUEST *taskreq; /* async tasklet data */
spinlock_t lock;
BUS_REQUEST *s_busRequestFreeQueue; /* free list */
BUS_REQUEST busRequest[BUS_REQUEST_MAX_NUM]; /* available bus requests */
void *claimedContext;
HTC_CALLBACKS htcCallbacks;
u8 *dma_buffer;
struct dl_list ScatterReqHead; /* scatter request list head */
bool scatter_enabled; /* scatter enabled flag */
bool is_suspend;
bool is_disabled;
atomic_t irqHandling;
HIF_DEVICE_POWER_CHANGE_TYPE powerConfig;
const struct sdio_device_id *id;
};
#define HIF_DMA_BUFFER_SIZE (32 * 1024)
#define CMD53_FIXED_ADDRESS 1
#define CMD53_INCR_ADDRESS 2
BUS_REQUEST *hifAllocateBusRequest(struct hif_device *device);
void hifFreeBusRequest(struct hif_device *device, BUS_REQUEST *busrequest);
void AddToAsyncList(struct hif_device *device, BUS_REQUEST *busrequest);
#ifdef HIF_LINUX_MMC_SCATTER_SUPPORT
#define MAX_SCATTER_REQUESTS 4
#define MAX_SCATTER_ENTRIES_PER_REQ 16
#define MAX_SCATTER_REQ_TRANSFER_SIZE 32*1024
struct hif_scatter_req_priv {
struct hif_scatter_req *pHifScatterReq; /* HIF scatter request with allocated entries */
struct hif_device *device; /* this device */
BUS_REQUEST *busrequest; /* request associated with request */
/* scatter list for linux */
struct scatterlist sgentries[MAX_SCATTER_ENTRIES_PER_REQ];
};
#define ATH_DEBUG_SCATTER ATH_DEBUG_MAKE_MODULE_MASK(0)
int SetupHIFScatterSupport(struct hif_device *device, struct hif_device_scatter_support_info *pInfo);
void CleanupHIFScatterResources(struct hif_device *device);
int DoHifReadWriteScatter(struct hif_device *device, BUS_REQUEST *busrequest);
#else // HIF_LINUX_MMC_SCATTER_SUPPORT
static inline int SetupHIFScatterSupport(struct hif_device *device, struct hif_device_scatter_support_info *pInfo)
{
return A_ENOTSUP;
}
static inline int DoHifReadWriteScatter(struct hif_device *device, BUS_REQUEST *busrequest)
{
return A_ENOTSUP;
}
#define CleanupHIFScatterResources(d) { }
#endif // HIF_LINUX_MMC_SCATTER_SUPPORT
#endif // _HIF_INTERNAL_H_
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