2 * Copyright (c) 2010 Broadcom Corporation
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #include <bcmendian.h>
23 #include <linux/delay.h>
25 #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];
51 bcm_mem_link_t *dbgmem_list;
54 /* Global ASSERT type flag */
57 static int16 linuxbcmerrormap[] = { 0, /* 0 */
58 -EINVAL, /* BCME_ERROR */
59 -EINVAL, /* BCME_BADARG */
60 -EINVAL, /* BCME_BADOPTION */
61 -EINVAL, /* BCME_NOTUP */
62 -EINVAL, /* BCME_NOTDOWN */
63 -EINVAL, /* BCME_NOTAP */
64 -EINVAL, /* BCME_NOTSTA */
65 -EINVAL, /* BCME_BADKEYIDX */
66 -EINVAL, /* BCME_RADIOOFF */
67 -EINVAL, /* BCME_NOTBANDLOCKED */
68 -EINVAL, /* BCME_NOCLK */
69 -EINVAL, /* BCME_BADRATESET */
70 -EINVAL, /* BCME_BADBAND */
71 -E2BIG, /* BCME_BUFTOOSHORT */
72 -E2BIG, /* BCME_BUFTOOLONG */
73 -EBUSY, /* BCME_BUSY */
74 -EINVAL, /* BCME_NOTASSOCIATED */
75 -EINVAL, /* BCME_BADSSIDLEN */
76 -EINVAL, /* BCME_OUTOFRANGECHAN */
77 -EINVAL, /* BCME_BADCHAN */
78 -EFAULT, /* BCME_BADADDR */
79 -ENOMEM, /* BCME_NORESOURCE */
80 -EOPNOTSUPP, /* BCME_UNSUPPORTED */
81 -EMSGSIZE, /* BCME_BADLENGTH */
82 -EINVAL, /* BCME_NOTREADY */
83 -EPERM, /* BCME_NOTPERMITTED */
84 -ENOMEM, /* BCME_NOMEM */
85 -EINVAL, /* BCME_ASSOCIATED */
86 -ERANGE, /* BCME_RANGE */
87 -EINVAL, /* BCME_NOTFOUND */
88 -EINVAL, /* BCME_WME_NOT_ENABLED */
89 -EINVAL, /* BCME_TSPEC_NOTFOUND */
90 -EINVAL, /* BCME_ACM_NOTSUPPORTED */
91 -EINVAL, /* BCME_NOT_WME_ASSOCIATION */
92 -EIO, /* BCME_SDIO_ERROR */
93 -ENODEV, /* BCME_DONGLE_DOWN */
94 -EINVAL, /* BCME_VERSION */
95 -EIO, /* BCME_TXFAIL */
96 -EIO, /* BCME_RXFAIL */
97 -EINVAL, /* BCME_NODEVICE */
98 -EINVAL, /* BCME_NMODE_DISABLED */
99 -ENODATA, /* BCME_NONRESIDENT */
101 /* When an new error code is added to bcmutils.h, add os
102 * spcecific error translation here as well
104 /* check if BCME_LAST changed since the last time this function was updated */
106 #error "You need to add a OS error translation in the linuxbcmerrormap \
107 for new error code defined in bcmutils.h"
111 /* translate bcmerrors into linux errors */
112 int osl_error(int bcmerror)
116 else if (bcmerror < BCME_LAST)
117 bcmerror = BCME_ERROR;
119 /* Array bounds covered by ASSERT in osl_attach */
120 return linuxbcmerrormap[-bcmerror];
123 osl_t *osl_attach(void *pdev, uint bustype, bool pkttag)
127 osh = kmalloc(sizeof(osl_t), GFP_ATOMIC);
130 bzero(osh, sizeof(osl_t));
132 /* Check that error map has the right number of entries in it */
133 ASSERT(ABS(BCME_LAST) == (ARRAYSIZE(linuxbcmerrormap) - 1));
135 osh->magic = OS_HANDLE_MAGIC;
138 osh->dbgmem_list = NULL;
140 osh->pub.pkttag = pkttag;
141 osh->bustype = bustype;
146 osh->pub.mmbus = TRUE;
153 osh->pub.mmbus = FALSE;
163 ASSERT(OSL_PKTTAG_SZ <= sizeof(skb->cb));
169 void osl_detach(osl_t *osh)
174 ASSERT(osh->magic == OS_HANDLE_MAGIC);
178 /* Return a new packet. zero out pkttag */
179 void *BCMFASTPATH osl_pktget(osl_t *osh, uint len)
183 skb = dev_alloc_skb(len);
188 osh->pub.pktalloced++;
194 /* Free the driver packet. Free the tag if present */
195 void BCMFASTPATH osl_pktfree(osl_t *osh, void *p, bool send)
197 struct sk_buff *skb, *nskb;
200 skb = (struct sk_buff *)p;
203 if (send && osh->pub.tx_fn)
204 osh->pub.tx_fn(osh->pub.tx_ctx, p, 0);
206 /* perversion: we use skb->next to chain multi-skb packets */
212 /* cannot kfree_skb() on hard IRQ (net/core/skbuff.c) if
215 dev_kfree_skb_any(skb);
217 /* can free immediately (even in_irq()) if destructor
222 osh->pub.pktalloced--;
228 uint32 osl_pci_read_config(osl_t *osh, uint offset, uint size)
231 uint retry = PCI_CFG_RETRY;
233 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
235 /* only 4byte access supported */
239 pci_read_config_dword(osh->pdev, offset, &val);
240 if (val != 0xffffffff)
245 if (retry < PCI_CFG_RETRY)
246 printk("PCI CONFIG READ access to %d required %d retries\n",
247 offset, (PCI_CFG_RETRY - retry));
253 void osl_pci_write_config(osl_t *osh, uint offset, uint size, uint val)
255 uint retry = PCI_CFG_RETRY;
257 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
259 /* only 4byte access supported */
263 pci_write_config_dword(osh->pdev, offset, val);
264 if (offset != PCI_BAR0_WIN)
266 if (osl_pci_read_config(osh, offset, size) == val)
271 if (retry < PCI_CFG_RETRY)
272 printk("PCI CONFIG WRITE access to %d required %d retries\n",
273 offset, (PCI_CFG_RETRY - retry));
277 /* return bus # for the pci device pointed by osh->pdev */
278 uint osl_pci_bus(osl_t *osh)
280 ASSERT(osh && (osh->magic == OS_HANDLE_MAGIC) && osh->pdev);
282 return ((struct pci_dev *)osh->pdev)->bus->number;
285 /* return slot # for the pci device pointed by osh->pdev */
286 uint osl_pci_slot(osl_t *osh)
288 ASSERT(osh && (osh->magic == OS_HANDLE_MAGIC) && osh->pdev);
290 return PCI_SLOT(((struct pci_dev *)osh->pdev)->devfn);
294 osl_pcmcia_attr(osl_t *osh, uint offset, char *buf, int size, bool write)
298 void osl_pcmcia_read_attr(osl_t *osh, uint offset, void *buf, int size)
300 osl_pcmcia_attr(osh, offset, (char *)buf, size, FALSE);
303 void osl_pcmcia_write_attr(osl_t *osh, uint offset, void *buf, int size)
305 osl_pcmcia_attr(osh, offset, (char *)buf, size, TRUE);
308 void *osl_malloc(osl_t *osh, uint size)
312 /* only ASSERT if osh is defined */
314 ASSERT(osh->magic == OS_HANDLE_MAGIC);
316 addr = kmalloc(size, GFP_ATOMIC);
323 osh->malloced += size;
328 void osl_mfree(osl_t *osh, void *addr, uint size)
331 ASSERT(osh->magic == OS_HANDLE_MAGIC);
332 osh->malloced -= size;
337 uint osl_malloced(osl_t *osh)
339 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
340 return osh->malloced;
343 uint osl_malloc_failed(osl_t *osh)
345 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
349 uint osl_dma_consistent_align(void)
354 void *osl_dma_alloc_consistent(osl_t *osh, uint size, uint16 align_bits,
355 uint *alloced, ulong *pap)
357 uint16 align = (1 << align_bits);
358 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
360 if (!ISALIGNED(DMA_CONSISTENT_ALIGN, align))
364 return pci_alloc_consistent(osh->pdev, size, (dma_addr_t *) pap);
367 void osl_dma_free_consistent(osl_t *osh, void *va, uint size, ulong pa)
369 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
371 pci_free_consistent(osh->pdev, size, va, (dma_addr_t) pa);
374 uint BCMFASTPATH osl_dma_map(osl_t *osh, void *va, uint size, int direction)
378 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
379 dir = (direction == DMA_TX) ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE;
380 return pci_map_single(osh->pdev, va, size, dir);
383 void BCMFASTPATH osl_dma_unmap(osl_t *osh, uint pa, uint size, int direction)
387 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
388 dir = (direction == DMA_TX) ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE;
389 pci_unmap_single(osh->pdev, (uint32) pa, size, dir);
392 #if defined(BCMDBG_ASSERT)
393 void osl_assert(char *exp, char *file, int line)
398 basename = strrchr(file, '/');
407 snprintf(tempbuf, 256,
408 "assertion \"%s\" failed: file \"%s\", line %d\n", exp,
411 /* Print assert message and give it time to be written to /var/log/messages */
412 if (!in_interrupt()) {
414 printk("%s", tempbuf);
415 printk("panic in %d seconds\n", delay);
416 set_current_state(TASK_INTERRUPTIBLE);
417 schedule_timeout(delay * HZ);
420 switch (g_assert_type) {
422 panic("%s", tempbuf);
425 printk("%s", tempbuf);
429 printk("%s", tempbuf);
434 #endif /* BCMDBG_ASSERT */
437 #endif /* defined(BCMDBG_ASSERT) */
439 void osl_delay(uint usec)
451 * The pkttag contents are NOT cloned.
453 void *osl_pktdup(osl_t *osh, void *skb)
457 p = skb_clone((struct sk_buff *)skb, GFP_ATOMIC);
461 /* skb_clone copies skb->cb.. we don't want that */
463 bzero((void *)((struct sk_buff *)p)->cb, OSL_PKTTAG_SZ);
465 /* Increment the packet counter */
466 osh->pub.pktalloced++;
471 u8 osl_readb(osl_t *osh, volatile u8 *r)
473 osl_rreg_fn_t rreg = ((osl_pubinfo_t *) osh)->rreg_fn;
474 void *ctx = ((osl_pubinfo_t *) osh)->reg_ctx;
476 return (u8) ((rreg) (ctx, (void *)r, sizeof(u8)));
479 uint16 osl_readw(osl_t *osh, volatile uint16 *r)
481 osl_rreg_fn_t rreg = ((osl_pubinfo_t *) osh)->rreg_fn;
482 void *ctx = ((osl_pubinfo_t *) osh)->reg_ctx;
484 return (uint16) ((rreg) (ctx, (void *)r, sizeof(uint16)));
487 uint32 osl_readl(osl_t *osh, volatile uint32 *r)
489 osl_rreg_fn_t rreg = ((osl_pubinfo_t *) osh)->rreg_fn;
490 void *ctx = ((osl_pubinfo_t *) osh)->reg_ctx;
492 return (uint32) ((rreg) (ctx, (void *)r, sizeof(uint32)));
495 void osl_writeb(osl_t *osh, volatile u8 *r, u8 v)
497 osl_wreg_fn_t wreg = ((osl_pubinfo_t *) osh)->wreg_fn;
498 void *ctx = ((osl_pubinfo_t *) osh)->reg_ctx;
500 ((wreg) (ctx, (void *)r, v, sizeof(u8)));
503 void osl_writew(osl_t *osh, volatile uint16 *r, uint16 v)
505 osl_wreg_fn_t wreg = ((osl_pubinfo_t *) osh)->wreg_fn;
506 void *ctx = ((osl_pubinfo_t *) osh)->reg_ctx;
508 ((wreg) (ctx, (void *)r, v, sizeof(uint16)));
511 void osl_writel(osl_t *osh, volatile uint32 *r, uint32 v)
513 osl_wreg_fn_t wreg = ((osl_pubinfo_t *) osh)->wreg_fn;
514 void *ctx = ((osl_pubinfo_t *) osh)->reg_ctx;
516 ((wreg) (ctx, (void *)r, v, sizeof(uint32)));
519 /* Linux Kernel: File Operations: end */