2 * Linux OS Independent Layer
4 * Copyright 2007, 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.
17 #include <bcmendian.h>
21 #include "linux_osl.h"
23 #include <linux/delay.h>
25 #include <asm/paccess.h>
29 #define PCI_CFG_RETRY 10
31 #define OS_HANDLE_MAGIC 0x1234abcd /* Magic # to recognise osh */
32 #define BCM_MEM_FILENAME_LEN 24 /* Mem. filename length */
34 typedef struct bcm_mem_link
36 struct bcm_mem_link
*prev
;
37 struct bcm_mem_link
*next
;
40 char file
[BCM_MEM_FILENAME_LEN
];
52 bcm_mem_link_t
*dbgmem_list
;
53 #ifdef BCMDBG_PKT /* pkt logging for debugging */
54 pktlist_info_t pktlist
;
55 #endif /* BCMDBG_PKT */
59 static int16 linuxbcmerrormap
[] = { 0, /* 0 */
60 -EINVAL
, /* BCME_ERROR */
61 -EINVAL
, /* BCME_BADARG */
62 -EINVAL
, /* BCME_BADOPTION */
63 -EINVAL
, /* BCME_NOTUP */
64 -EINVAL
, /* BCME_NOTDOWN */
65 -EINVAL
, /* BCME_NOTAP */
66 -EINVAL
, /* BCME_NOTSTA */
67 -EINVAL
, /* BCME_BADKEYIDX */
68 -EINVAL
, /* BCME_RADIOOFF */
69 -EINVAL
, /* BCME_NOTBANDLOCKED */
70 -EINVAL
, /* BCME_NOCLK */
71 -EINVAL
, /* BCME_BADRATESET */
72 -EINVAL
, /* BCME_BADBAND */
73 -E2BIG
, /* BCME_BUFTOOSHORT */
74 -E2BIG
, /* BCME_BUFTOOLONG */
75 -EBUSY
, /* BCME_BUSY */
76 -EINVAL
, /* BCME_NOTASSOCIATED */
77 -EINVAL
, /* BCME_BADSSIDLEN */
78 -EINVAL
, /* BCME_OUTOFRANGECHAN */
79 -EINVAL
, /* BCME_BADCHAN */
80 -EFAULT
, /* BCME_BADADDR */
81 -ENOMEM
, /* BCME_NORESOURCE */
82 -EOPNOTSUPP
, /* BCME_UNSUPPORTED */
83 -EMSGSIZE
, /* BCME_BADLENGTH */
84 -EINVAL
, /* BCME_NOTREADY */
85 -EPERM
, /* BCME_NOTPERMITTED */
86 -ENOMEM
, /* BCME_NOMEM */
87 -EINVAL
, /* BCME_ASSOCIATED */
88 -ERANGE
, /* BCME_RANGE */
89 -EINVAL
, /* BCME_NOTFOUND */
90 -EINVAL
, /* BCME_WME_NOT_ENABLED */
91 -EINVAL
, /* BCME_TSPEC_NOTFOUND */
92 -EINVAL
, /* BCME_ACM_NOTSUPPORTED */
93 -EINVAL
, /* BCME_NOT_WME_ASSOCIATION */
94 -EIO
, /* BCME_SDIO_ERROR */
95 -ENODEV
, /* BCME_DONGLE_DOWN */
96 -EINVAL
/* BCME_VERSION */
97 /* When an new error code is added to bcmutils.h, add os
98 * spcecific error translation here as well
100 /* check if BCME_LAST changed since the last time this function was updated */
102 #error "You need to add a OS error translation in the linuxbcmerrormap \
103 for new error code defined in bcmuitls.h"
104 #endif /* BCME_LAST != -37 */
107 /* translate bcmerrors into linux errors */
109 osl_error (int bcmerror
)
113 else if (bcmerror
< BCME_LAST
)
114 bcmerror
= BCME_ERROR
;
116 /* Array bounds covered by ASSERT in osl_attach */
117 return linuxbcmerrormap
[-bcmerror
];
121 osl_attach (void *pdev
, uint bustype
, bool pkttag
)
125 osh
= kmalloc (sizeof (osl_t
), GFP_ATOMIC
);
128 bzero (osh
, sizeof (osl_t
));
130 /* Check that error map has the right number of entries in it */
131 ASSERT (ABS (BCME_LAST
) == (ARRAYSIZE (linuxbcmerrormap
) - 1));
133 osh
->magic
= OS_HANDLE_MAGIC
;
136 osh
->dbgmem_list
= NULL
;
138 osh
->pub
.pkttag
= pkttag
;
139 osh
->bustype
= bustype
;
146 osh
->pub
.mmbus
= TRUE
;
160 ASSERT (OSL_PKTTAG_SZ
<= sizeof (skb
->cb
));
167 osl_detach (osl_t
* osh
)
172 ASSERT (osh
->magic
== OS_HANDLE_MAGIC
);
176 /* Return a new packet. zero out pkttag */
178 osl_pktget (osl_t
* osh
, uint len
)
182 if ((skb
= dev_alloc_skb (len
)))
188 pktlist_add (&(osh
->pktlist
), (void *) skb
);
189 #endif /* BCMDBG_PKT */
191 osh
->pub
.pktalloced
++;
194 return ((void *) skb
);
197 /* Free the driver packet. Free the tag if present */
199 osl_pktfree (osl_t
* osh
, void *p
, bool send
)
201 struct sk_buff
*skb
, *nskb
;
203 skb
= (struct sk_buff
*) p
;
205 if (send
&& osh
->pub
.tx_fn
)
206 osh
->pub
.tx_fn (osh
->pub
.tx_ctx
, p
, 0);
208 /* perversion: we use skb->next to chain multi-skb packets */
215 pktlist_remove (&(osh
->pktlist
), (void *) skb
);
216 #endif /* BCMDBG_PKT */
220 /* cannot kfree_skb() on hard IRQ (net/core/skbuff.c) if destructor exists
222 dev_kfree_skb_any (skb
);
226 /* can free immediately (even in_irq()) if destructor does not exist */
230 osh
->pub
.pktalloced
--;
237 osl_pci_read_config (osl_t
* osh
, uint offset
, uint size
)
240 uint retry
= PCI_CFG_RETRY
;
242 ASSERT ((osh
&& (osh
->magic
== OS_HANDLE_MAGIC
)));
244 /* only 4byte access supported */
249 pci_read_config_dword (osh
->pdev
, offset
, &val
);
250 if (val
!= 0xffffffff)
256 if (retry
< PCI_CFG_RETRY
)
257 printk ("PCI CONFIG READ access to %d required %d retries\n", offset
,
258 (PCI_CFG_RETRY
- retry
));
265 osl_pci_write_config (osl_t
* osh
, uint offset
, uint size
, uint val
)
267 uint retry
= PCI_CFG_RETRY
;
269 ASSERT ((osh
&& (osh
->magic
== OS_HANDLE_MAGIC
)));
271 /* only 4byte access supported */
276 pci_write_config_dword (osh
->pdev
, offset
, val
);
277 if (offset
!= PCI_BAR0_WIN
)
279 if (osl_pci_read_config (osh
, offset
, size
) == val
)
285 if (retry
< PCI_CFG_RETRY
)
286 printk ("PCI CONFIG WRITE access to %d required %d retries\n", offset
,
287 (PCI_CFG_RETRY
- retry
));
291 /* return bus # for the pci device pointed by osh->pdev */
293 osl_pci_bus (osl_t
* osh
)
295 ASSERT (osh
&& (osh
->magic
== OS_HANDLE_MAGIC
) && osh
->pdev
);
297 return ((struct pci_dev
*) osh
->pdev
)->bus
->number
;
300 /* return slot # for the pci device pointed by osh->pdev */
302 osl_pci_slot (osl_t
* osh
)
304 ASSERT (osh
&& (osh
->magic
== OS_HANDLE_MAGIC
) && osh
->pdev
);
306 return PCI_SLOT (((struct pci_dev
*) osh
->pdev
)->devfn
);
310 osl_pcmcia_attr (osl_t
* osh
, uint offset
, char *buf
, int size
, bool write
)
315 osl_pcmcia_read_attr (osl_t
* osh
, uint offset
, void *buf
, int size
)
317 osl_pcmcia_attr (osh
, offset
, (char *) buf
, size
, FALSE
);
321 osl_pcmcia_write_attr (osl_t
* osh
, uint offset
, void *buf
, int size
)
323 osl_pcmcia_attr (osh
, offset
, (char *) buf
, size
, TRUE
);
330 osl_debug_malloc (osl_t
* osh
, uint size
, int line
, char *file
)
338 (bcm_mem_link_t
*) osl_malloc (osh
,
339 sizeof (bcm_mem_link_t
) + size
)) ==
346 basename
= strrchr (file
, '/');
354 strncpy (p
->file
, basename
, BCM_MEM_FILENAME_LEN
);
355 p
->file
[BCM_MEM_FILENAME_LEN
- 1] = '\0';
357 /* link this block */
359 p
->next
= osh
->dbgmem_list
;
362 osh
->dbgmem_list
= p
;
368 osl_debug_mfree (osl_t
* osh
, void *addr
, uint size
, int line
, char *file
)
371 (bcm_mem_link_t
*) ((int8
*) addr
- sizeof (bcm_mem_link_t
));
373 ASSERT ((osh
&& (osh
->magic
== OS_HANDLE_MAGIC
)));
378 ("osl_debug_mfree: double free on addr %p size %d at line %d file %s\n",
379 addr
, size
, line
, file
);
387 ("osl_debug_mfree: dealloc size %d does not match alloc size %d on addr %p"
388 " at line %d file %s\n", size
, p
->size
, addr
, line
, file
);
389 ASSERT (p
->size
== size
);
393 /* unlink this block */
395 p
->prev
->next
= p
->next
;
397 p
->next
->prev
= p
->prev
;
398 if (osh
->dbgmem_list
== p
)
399 osh
->dbgmem_list
= p
->next
;
400 p
->next
= p
->prev
= NULL
;
402 osl_mfree (osh
, p
, size
+ sizeof (bcm_mem_link_t
));
406 osl_debug_memdump (osl_t
* osh
, struct bcmstrbuf
*b
)
410 ASSERT ((osh
&& (osh
->magic
== OS_HANDLE_MAGIC
)));
412 bcm_bprintf (b
, " Address\tSize\tFile:line\n");
413 for (p
= osh
->dbgmem_list
; p
; p
= p
->next
)
414 bcm_bprintf (b
, "0x%08x\t%5d\t%s:%d\n",
415 (uintptr
) p
+ sizeof (bcm_mem_link_t
), p
->size
, p
->file
,
421 #endif /* BCMDBG_MEM */
424 osl_malloc (osl_t
* osh
, uint size
)
428 /* only ASSERT if osh is defined */
430 ASSERT (osh
->magic
== OS_HANDLE_MAGIC
);
432 if ((addr
= kmalloc (size
, GFP_ATOMIC
)) == NULL
)
439 osh
->malloced
+= size
;
445 osl_mfree (osl_t
* osh
, void *addr
, uint size
)
449 ASSERT (osh
->magic
== OS_HANDLE_MAGIC
);
450 osh
->malloced
-= size
;
456 osl_malloced (osl_t
* osh
)
458 ASSERT ((osh
&& (osh
->magic
== OS_HANDLE_MAGIC
)));
459 return (osh
->malloced
);
463 osl_malloc_failed (osl_t
* osh
)
465 ASSERT ((osh
&& (osh
->magic
== OS_HANDLE_MAGIC
)));
466 return (osh
->failed
);
470 osl_dma_alloc_consistent (osl_t
* osh
, uint size
, ulong
* pap
)
472 ASSERT ((osh
&& (osh
->magic
== OS_HANDLE_MAGIC
)));
474 return (pci_alloc_consistent (osh
->pdev
, size
, (dma_addr_t
*) pap
));
478 osl_dma_free_consistent (osl_t
* osh
, void *va
, uint size
, ulong pa
)
480 ASSERT ((osh
&& (osh
->magic
== OS_HANDLE_MAGIC
)));
482 pci_free_consistent (osh
->pdev
, size
, va
, (dma_addr_t
) pa
);
486 osl_dma_map (osl_t
* osh
, void *va
, uint size
, int direction
)
490 ASSERT ((osh
&& (osh
->magic
== OS_HANDLE_MAGIC
)));
491 dir
= (direction
== DMA_TX
) ? PCI_DMA_TODEVICE
: PCI_DMA_FROMDEVICE
;
492 return (pci_map_single (osh
->pdev
, va
, size
, dir
));
496 osl_dma_unmap (osl_t
* osh
, uint pa
, uint size
, int direction
)
500 ASSERT ((osh
&& (osh
->magic
== OS_HANDLE_MAGIC
)));
501 dir
= (direction
== DMA_TX
) ? PCI_DMA_TODEVICE
: PCI_DMA_FROMDEVICE
;
502 pci_unmap_single (osh
->pdev
, (uint32
) pa
, size
, dir
);
505 #if defined(BINOSL) || defined(BCMDBG_ASSERT)
507 osl_assert (char *exp
, char *file
, int line
)
511 sprintf (tempbuf
, "assertion \"%s\" failed: file \"%s\", line %d\n", exp
,
515 #endif /* BCMDBG_ASSERT || BINOSL */
518 osl_delay (uint usec
)
524 d
= MIN (usec
, 1000);
531 * The pkttag contents are NOT cloned.
534 osl_pktdup (osl_t
* osh
, void *skb
)
538 if ((p
= skb_clone ((struct sk_buff
*) skb
, GFP_ATOMIC
)) == NULL
)
541 /* skb_clone copies skb->cb.. we don't want that */
543 bzero ((void *) ((struct sk_buff
*) p
)->cb
, OSL_PKTTAG_SZ
);
545 /* Increment the packet counter */
546 osh
->pub
.pktalloced
++;
548 pktlist_add (&(osh
->pktlist
), (void *) p
);
549 #endif /* BCMDBG_PKT */
554 osl_pktalloced (osl_t
* osh
)
556 return (osh
->pub
.pktalloced
);
561 osl_pktlist_dump (osl_t
* osh
, char *buf
)
563 pktlist_dump (&(osh
->pktlist
), buf
);
568 osl_pktlist_add (osl_t
* osh
, void *p
)
570 pktlist_add (&(osh
->pktlist
), p
);
574 osl_pktlist_remove (osl_t
* osh
, void *p
)
576 pktlist_remove (&(osh
->pktlist
), p
);
578 #endif /* BCMDBG_PKT */
581 * BINOSL selects the slightly slower function-call-based binary compatible osl.
586 osl_printf (const char *format
, ...)
592 /* sprintf into a local buffer because there *is* no "vprintk()".. */
593 va_start (args
, format
);
594 len
= vsnprintf (buf
, 1024, format
, args
);
597 if (len
> sizeof (buf
))
599 printk ("osl_printf: buffer overrun\n");
603 return (printk (buf
));
607 osl_sprintf (char *buf
, const char *format
, ...)
612 va_start (args
, format
);
613 rc
= vsprintf (buf
, format
, args
);
619 osl_strcmp (const char *s1
, const char *s2
)
621 return (strcmp (s1
, s2
));
625 osl_strncmp (const char *s1
, const char *s2
, uint n
)
627 return (strncmp (s1
, s2
, n
));
631 osl_strlen (const char *s
)
637 osl_strcpy (char *d
, const char *s
)
639 return (strcpy (d
, s
));
643 osl_strncpy (char *d
, const char *s
, uint n
)
645 return (strncpy (d
, s
, n
));
649 bcopy (const void *src
, void *dst
, int len
)
651 memcpy (dst
, src
, len
);
655 bcmp (const void *b1
, const void *b2
, int len
)
657 return (memcmp (b1
, b2
, len
));
661 bzero (void *b
, int len
)
663 memset (b
, '\0', len
);
667 osl_readl (volatile uint32
* r
)
673 osl_readw (volatile uint16
* r
)
679 osl_readb (volatile uint8
* r
)
685 osl_writel (uint32 v
, volatile uint32
* r
)
691 osl_writew (uint16 v
, volatile uint16
* r
)
697 osl_writeb (uint8 v
, volatile uint8
* r
)
703 osl_uncached (void *va
)
706 return ((void *) KSEG1ADDR (va
));
708 return ((void *) va
);
718 cycles
= read_c0_count () * 2;
719 #elif defined(__i386__)
723 #endif /* defined(mips) */
728 osl_reg_map (uint32 pa
, uint size
)
730 return (ioremap_nocache ((unsigned long) pa
, (unsigned long) size
));
734 osl_reg_unmap (void *va
)
740 osl_busprobe (uint32
* val
, uint32 addr
)
743 return get_dbe (*val
, (uint32
*) addr
);
745 *val
= readl ((uint32
*) (uintptr
) addr
);
751 osl_pktshared (void *skb
)
753 return (((struct sk_buff
*) skb
)->cloned
);
757 osl_pktdata (osl_t
* osh
, void *skb
)
759 return (((struct sk_buff
*) skb
)->data
);
763 osl_pktlen (osl_t
* osh
, void *skb
)
765 return (((struct sk_buff
*) skb
)->len
);
769 osl_pktheadroom (osl_t
* osh
, void *skb
)
771 return (uint
) skb_headroom ((struct sk_buff
*) skb
);
775 osl_pkttailroom (osl_t
* osh
, void *skb
)
777 return (uint
) skb_tailroom ((struct sk_buff
*) skb
);
781 osl_pktnext (osl_t
* osh
, void *skb
)
783 return (((struct sk_buff
*) skb
)->next
);
787 osl_pktsetnext (void *skb
, void *x
)
789 ((struct sk_buff
*) skb
)->next
= (struct sk_buff
*) x
;
793 osl_pktsetlen (osl_t
* osh
, void *skb
, uint len
)
795 __skb_trim ((struct sk_buff
*) skb
, len
);
799 osl_pktpush (osl_t
* osh
, void *skb
, int bytes
)
801 return (skb_push ((struct sk_buff
*) skb
, bytes
));
805 osl_pktpull (osl_t
* osh
, void *skb
, int bytes
)
807 return (skb_pull ((struct sk_buff
*) skb
, bytes
));
811 osl_pkttag (void *skb
)
813 return ((void *) (((struct sk_buff
*) skb
)->cb
));
817 osl_pktlink (void *skb
)
819 return (((struct sk_buff
*) skb
)->prev
);
823 osl_pktsetlink (void *skb
, void *x
)
825 ((struct sk_buff
*) skb
)->prev
= (struct sk_buff
*) x
;
829 osl_pktprio (void *skb
)
831 return (((struct sk_buff
*) skb
)->priority
);
835 osl_pktsetprio (void *skb
, uint x
)
837 ((struct sk_buff
*) skb
)->priority
= x
;
840 /* Convert a driver packet to native(OS) packet
841 * In the process, packettag is zeroed out before sending up
842 * IP code depends on skb->cb to be setup correctly with various options
843 * In our case, that means it should be 0
846 osl_pkt_tonative (osl_t
* osh
, void *pkt
)
848 struct sk_buff
*nskb
;
851 bzero ((void *) ((struct sk_buff
*) pkt
)->cb
, OSL_PKTTAG_SZ
);
853 /* Decrement the packet counter */
854 for (nskb
= (struct sk_buff
*) pkt
; nskb
; nskb
= nskb
->next
)
857 pktlist_remove (&(osh
->pktlist
), (void *) nskb
);
858 #endif /* BCMDBG_PKT */
859 osh
->pub
.pktalloced
--;
862 return (struct sk_buff
*) pkt
;
865 /* Convert a native(OS) packet to driver packet.
866 * In the process, native packet is destroyed, there is no copying
867 * Also, a packettag is zeroed out
870 osl_pkt_frmnative (osl_t
* osh
, struct sk_buff
*skb
)
872 struct sk_buff
*nskb
;
875 bzero ((void *) skb
->cb
, OSL_PKTTAG_SZ
);
877 /* Increment the packet counter */
878 for (nskb
= skb
; nskb
; nskb
= nskb
->next
)
881 pktlist_add (&(osh
->pktlist
), (void *) nskb
);
882 #endif /* BCMDBG_PKT */
883 osh
->pub
.pktalloced
++;
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