summaryrefslogtreecommitdiffstats
path: root/package/broadcom-wl/src/kmod/linux_osl.c
blob: 24fd77daea53c3f7bbfab50aa2b8f17b9f15a674 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
/*
 * Linux OS Independent Layer
 *
 * Copyright 2006, Broadcom Corporation
 * All Rights Reserved.
 * 
 * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
 * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
 * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
 *
 * $Id: linux_osl.c,v 1.1.1.14 2006/04/08 06:13:39 honor Exp $
 */

#define LINUX_OSL

#include <typedefs.h>
#include <bcmendian.h>
#include <linux/module.h>
#include <linuxver.h>
#include <bcmdefs.h>
#include <osl.h>
#include "linux_osl.h"
#include <bcmutils.h>
#include <linux/delay.h>
#ifdef mips
#include <asm/paccess.h>
#endif /* mips */
#include <pcicfg.h>

#define PCI_CFG_RETRY 		10	

#define OS_HANDLE_MAGIC		0x1234abcd	/* Magic # to recognise osh */
#define BCM_MEM_FILENAME_LEN 	24		/* Mem. filename length */

typedef struct bcm_mem_link {
	struct bcm_mem_link *prev;
	struct bcm_mem_link *next;
	uint	size;
	int	line;
	char	file[BCM_MEM_FILENAME_LEN];
} bcm_mem_link_t;

static int16 linuxbcmerrormap[] =  \
{	0, 			/* 0 */
	-EINVAL,		/* BCME_ERROR */
	-EINVAL,		/* BCME_BADARG */
	-EINVAL,		/* BCME_BADOPTION */
	-EINVAL,		/* BCME_NOTUP */
	-EINVAL,		/* BCME_NOTDOWN */
	-EINVAL,		/* BCME_NOTAP */
	-EINVAL,		/* BCME_NOTSTA */
	-EINVAL,		/* BCME_BADKEYIDX */
	-EINVAL,		/* BCME_RADIOOFF */
	-EINVAL,		/* BCME_NOTBANDLOCKED */
	-EINVAL, 		/* BCME_NOCLK */
	-EINVAL, 		/* BCME_BADRATESET */
	-EINVAL, 		/* BCME_BADBAND */
	-E2BIG,			/* BCME_BUFTOOSHORT */
	-E2BIG,			/* BCME_BUFTOOLONG */
	-EBUSY, 		/* BCME_BUSY */
	-EINVAL, 		/* BCME_NOTASSOCIATED */
	-EINVAL, 		/* BCME_BADSSIDLEN */
	-EINVAL, 		/* BCME_OUTOFRANGECHAN */
	-EINVAL, 		/* BCME_BADCHAN */
	-EFAULT, 		/* BCME_BADADDR */
	-ENOMEM, 		/* BCME_NORESOURCE */
	-EOPNOTSUPP,		/* BCME_UNSUPPORTED */
	-EMSGSIZE,		/* BCME_BADLENGTH */
	-EINVAL,		/* BCME_NOTREADY */
	-EPERM,			/* BCME_NOTPERMITTED */
	-ENOMEM, 		/* BCME_NOMEM */
	-EINVAL, 		/* BCME_ASSOCIATED */
	-ERANGE, 		/* BCME_RANGE */
	-EINVAL, 		/* BCME_NOTFOUND */
	-EINVAL, 		/* BCME_WME_NOT_ENABLED */
	-EINVAL, 		/* BCME_TSPEC_NOTFOUND */
	-EINVAL, 		/* BCME_ACM_NOTSUPPORTED */
	-EINVAL,		/* BCME_NOT_WME_ASSOCIATION */
	-EIO,			/* BCME_SDIO_ERROR */
	-ENODEV			/* BCME_DONGLE_DOWN */
};

/* translate bcmerrors into linux errors */
int
osl_error(int bcmerror)
{
	int abs_bcmerror;
	int array_size = ARRAYSIZE(linuxbcmerrormap);

	abs_bcmerror = ABS(bcmerror);

	if (bcmerror > 0)
		abs_bcmerror = 0;

	else if (abs_bcmerror >= array_size)
		abs_bcmerror = BCME_ERROR;

	return linuxbcmerrormap[abs_bcmerror];
}

osl_t *
osl_attach(void *pdev, bool pkttag)
{
	osl_t *osh;

	osh = kmalloc(sizeof(osl_t), GFP_ATOMIC);
	ASSERT(osh);

	bzero(osh, sizeof(osl_t));

	/*
	 * check the cases where
	 * 1.Error code Added to bcmerror table, but forgot to add it to the OS
	 * dependent error code
	 * 2. Error code is added to the bcmerror table, but forgot to add the
	 * corresponding errorstring(dummy call to bcmerrorstr)
	 */
	bcmerrorstr(0);
	ASSERT(ABS(BCME_LAST) == (ARRAYSIZE(linuxbcmerrormap) - 1));

	osh->magic = OS_HANDLE_MAGIC;
	osh->malloced = 0;
	osh->failed = 0;
	osh->dbgmem_list = NULL;
	osh->pdev = pdev;
	osh->pub.pkttag = pkttag;

	return osh;
}

void
osl_detach(osl_t *osh)
{
	if (osh == NULL)
		return;

	ASSERT(osh->magic == OS_HANDLE_MAGIC);
	kfree(osh);
}

/* Return a new packet. zero out pkttag */
void*
osl_pktget(osl_t *osh, uint len, bool send)
{
	struct sk_buff *skb;

	if ((skb = dev_alloc_skb(len))) {
		skb_put(skb, len);
		skb->priority = 0;

#ifdef BCMDBG_PKT
	pktlist_add(&(osh->pktlist), (void *) skb);
#endif  /* BCMDBG_PKT */

		osh->pub.pktalloced++;
	}

	return ((void*) skb);
}

typedef void (*pktfree_cb_fn_t)(void *ctx, void *pkt, uint16 status);
/* Free the driver packet. Free the tag if present */
void
osl_pktfree(osl_t *osh, void *p, bool send)
{
	struct sk_buff *skb, *nskb;
	pktfree_cb_fn_t tx_fn = osh->pub.tx_fn;

	skb = (struct sk_buff*) p;
	
	if (send && tx_fn)
		tx_fn(osh->pub.tx_ctx, p, 0);

	/* perversion: we use skb->next to chain multi-skb packets */
	while (skb) {
		nskb = skb->next;
		skb->next = NULL;

#ifdef BCMDBG_PKT
		pktlist_remove(&(osh->pktlist), (void *) skb);
#endif  /* BCMDBG_PKT */

		if (skb->destructor) {
			/* cannot kfree_skb() on hard IRQ (net/core/skbuff.c) if destructor exists
			 */
			dev_kfree_skb_any(skb);
		} else {
			/* can free immediately (even in_irq()) if destructor does not exist */
			dev_kfree_skb(skb);
		}

		osh->pub.pktalloced--;

		skb = nskb;
	}
}

void*
osl_malloc(osl_t *osh, uint size)
{
	void *addr;

	/* only ASSERT if osh is defined */
	if (osh)
		ASSERT(osh->magic == OS_HANDLE_MAGIC);

	if ((addr = kmalloc(size, GFP_ATOMIC)) == NULL) {
		if (osh)
			osh->failed++;
		return (NULL);
	}
	if (osh)
		osh->malloced += size;

	return (addr);
}

void
osl_mfree(osl_t *osh, void *addr, uint size)
{
	if (osh) {
		ASSERT(osh->magic == OS_HANDLE_MAGIC);
		osh->malloced -= size;
	}
	kfree(addr);
}

uint
osl_malloced(osl_t *osh)
{
	ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
	return (osh->malloced);
}

uint osl_malloc_failed(osl_t *osh)
{
	ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
	return (osh->failed);
}

#undef osl_delay
void
osl_delay(uint usec)
{
	OSL_DELAY(usec);
}

/* Clone a packet.
 * The pkttag contents are NOT cloned.
 */
void *
osl_pktdup(osl_t *osh, void *skb)
{
	void * p;

	if ((p = skb_clone((struct sk_buff*)skb, GFP_ATOMIC)) == NULL)
		return NULL;

	/* skb_clone copies skb->cb.. we don't want that */
	if (osh->pub.pkttag)
		bzero((void*)((struct sk_buff *)p)->cb, OSL_PKTTAG_SZ);

	/* Increment the packet counter */
	osh->pub.pktalloced++;
	return (p);
}

uint
osl_pktalloced(osl_t *osh)
{
	return (osh->pub.pktalloced);
}