2 * Linux OS Independent Layer
4 * Copyright 2006, Broadcom Corporation
7 * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
8 * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
9 * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
10 * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
12 * $Id: linux_osl.c,v 1.1.1.14 2006/04/08 06:13:39 honor Exp $
18 #include <bcmendian.h>
19 #include <linux/module.h>
23 #include "linux_osl.h"
25 #include <linux/delay.h>
27 #include <asm/paccess.h>
31 #define PCI_CFG_RETRY 10
33 #define OS_HANDLE_MAGIC 0x1234abcd /* Magic # to recognise osh */
34 #define BCM_MEM_FILENAME_LEN 24 /* Mem. filename length */
36 typedef struct bcm_mem_link {
37 struct bcm_mem_link *prev;
38 struct bcm_mem_link *next;
41 char file[BCM_MEM_FILENAME_LEN];
44 static int16 linuxbcmerrormap[] = \
46 -EINVAL, /* BCME_ERROR */
47 -EINVAL, /* BCME_BADARG */
48 -EINVAL, /* BCME_BADOPTION */
49 -EINVAL, /* BCME_NOTUP */
50 -EINVAL, /* BCME_NOTDOWN */
51 -EINVAL, /* BCME_NOTAP */
52 -EINVAL, /* BCME_NOTSTA */
53 -EINVAL, /* BCME_BADKEYIDX */
54 -EINVAL, /* BCME_RADIOOFF */
55 -EINVAL, /* BCME_NOTBANDLOCKED */
56 -EINVAL, /* BCME_NOCLK */
57 -EINVAL, /* BCME_BADRATESET */
58 -EINVAL, /* BCME_BADBAND */
59 -E2BIG, /* BCME_BUFTOOSHORT */
60 -E2BIG, /* BCME_BUFTOOLONG */
61 -EBUSY, /* BCME_BUSY */
62 -EINVAL, /* BCME_NOTASSOCIATED */
63 -EINVAL, /* BCME_BADSSIDLEN */
64 -EINVAL, /* BCME_OUTOFRANGECHAN */
65 -EINVAL, /* BCME_BADCHAN */
66 -EFAULT, /* BCME_BADADDR */
67 -ENOMEM, /* BCME_NORESOURCE */
68 -EOPNOTSUPP, /* BCME_UNSUPPORTED */
69 -EMSGSIZE, /* BCME_BADLENGTH */
70 -EINVAL, /* BCME_NOTREADY */
71 -EPERM, /* BCME_NOTPERMITTED */
72 -ENOMEM, /* BCME_NOMEM */
73 -EINVAL, /* BCME_ASSOCIATED */
74 -ERANGE, /* BCME_RANGE */
75 -EINVAL, /* BCME_NOTFOUND */
76 -EINVAL, /* BCME_WME_NOT_ENABLED */
77 -EINVAL, /* BCME_TSPEC_NOTFOUND */
78 -EINVAL, /* BCME_ACM_NOTSUPPORTED */
79 -EINVAL, /* BCME_NOT_WME_ASSOCIATION */
80 -EIO, /* BCME_SDIO_ERROR */
81 -ENODEV /* BCME_DONGLE_DOWN */
84 /* translate bcmerrors into linux errors */
86 osl_error(int bcmerror)
89 int array_size = ARRAYSIZE(linuxbcmerrormap);
91 abs_bcmerror = ABS(bcmerror);
96 else if (abs_bcmerror >= array_size)
97 abs_bcmerror = BCME_ERROR;
99 return linuxbcmerrormap[abs_bcmerror];
103 osl_attach(void *pdev, bool pkttag)
107 osh = kmalloc(sizeof(osl_t), GFP_ATOMIC);
110 bzero(osh, sizeof(osl_t));
113 * check the cases where
114 * 1.Error code Added to bcmerror table, but forgot to add it to the OS
115 * dependent error code
116 * 2. Error code is added to the bcmerror table, but forgot to add the
117 * corresponding errorstring(dummy call to bcmerrorstr)
120 ASSERT(ABS(BCME_LAST) == (ARRAYSIZE(linuxbcmerrormap) - 1));
122 osh->magic = OS_HANDLE_MAGIC;
125 osh->dbgmem_list = NULL;
127 osh->pub.pkttag = pkttag;
133 osl_detach(osl_t *osh)
138 ASSERT(osh->magic == OS_HANDLE_MAGIC);
142 /* Return a new packet. zero out pkttag */
144 osl_pktget(osl_t *osh, uint len, bool send)
148 if ((skb = dev_alloc_skb(len))) {
153 pktlist_add(&(osh->pktlist), (void *) skb);
154 #endif /* BCMDBG_PKT */
156 osh->pub.pktalloced++;
159 return ((void*) skb);
162 typedef void (*pktfree_cb_fn_t)(void *ctx, void *pkt, uint16 status);
163 /* Free the driver packet. Free the tag if present */
165 osl_pktfree(osl_t *osh, void *p, bool send)
167 struct sk_buff *skb, *nskb;
168 pktfree_cb_fn_t tx_fn = osh->pub.tx_fn;
170 skb = (struct sk_buff*) p;
173 tx_fn(osh->pub.tx_ctx, p, 0);
175 /* perversion: we use skb->next to chain multi-skb packets */
181 pktlist_remove(&(osh->pktlist), (void *) skb);
182 #endif /* BCMDBG_PKT */
184 if (skb->destructor) {
185 /* cannot kfree_skb() on hard IRQ (net/core/skbuff.c) if destructor exists
187 dev_kfree_skb_any(skb);
189 /* can free immediately (even in_irq()) if destructor does not exist */
193 osh->pub.pktalloced--;
200 osl_malloc(osl_t *osh, uint size)
204 /* only ASSERT if osh is defined */
206 ASSERT(osh->magic == OS_HANDLE_MAGIC);
208 if ((addr = kmalloc(size, GFP_ATOMIC)) == NULL) {
214 osh->malloced += size;
220 osl_mfree(osl_t *osh, void *addr, uint size)
223 ASSERT(osh->magic == OS_HANDLE_MAGIC);
224 osh->malloced -= size;
230 osl_malloced(osl_t *osh)
232 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
233 return (osh->malloced);
236 uint osl_malloc_failed(osl_t *osh)
238 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
239 return (osh->failed);
250 * The pkttag contents are NOT cloned.
253 osl_pktdup(osl_t *osh, void *skb)
257 if ((p = skb_clone((struct sk_buff*)skb, GFP_ATOMIC)) == NULL)
260 /* skb_clone copies skb->cb.. we don't want that */
262 bzero((void*)((struct sk_buff *)p)->cb, OSL_PKTTAG_SZ);
264 /* Increment the packet counter */
265 osh->pub.pktalloced++;
270 osl_pktalloced(osl_t *osh)
272 return (osh->pub.pktalloced);