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 #ifdef DHD_USE_STATIC_BUF
37 #define MAX_STATIC_BUF_NUM 16
38 #define STATIC_BUF_SIZE (PAGE_SIZE*2)
39 #define STATIC_BUF_TOTAL_LEN (MAX_STATIC_BUF_NUM*STATIC_BUF_SIZE)
40 typedef struct bcm_static_buf {
41 struct semaphore static_sem;
42 unsigned char *buf_ptr;
43 unsigned char buf_use[MAX_STATIC_BUF_NUM];
46 static bcm_static_buf_t *bcm_static_buf = 0;
48 #define MAX_STATIC_PKT_NUM 8
49 typedef struct bcm_static_pkt {
50 struct sk_buff *skb_4k[MAX_STATIC_PKT_NUM];
51 struct sk_buff *skb_8k[MAX_STATIC_PKT_NUM];
52 struct semaphore osl_pkt_sem;
53 unsigned char pkt_use[MAX_STATIC_PKT_NUM * 2];
55 static bcm_static_pkt_t *bcm_static_skb = 0;
56 #endif /* DHD_USE_STATIC_BUF */
57 typedef struct bcm_mem_link {
58 struct bcm_mem_link *prev;
59 struct bcm_mem_link *next;
62 char file[BCM_MEM_FILENAME_LEN];
72 bcm_mem_link_t *dbgmem_list;
75 /* Global ASSERT type flag */
78 static s16 linuxbcmerrormap[] = { 0, /* 0 */
79 -EINVAL, /* BCME_ERROR */
80 -EINVAL, /* BCME_BADARG */
81 -EINVAL, /* BCME_BADOPTION */
82 -EINVAL, /* BCME_NOTUP */
83 -EINVAL, /* BCME_NOTDOWN */
84 -EINVAL, /* BCME_NOTAP */
85 -EINVAL, /* BCME_NOTSTA */
86 -EINVAL, /* BCME_BADKEYIDX */
87 -EINVAL, /* BCME_RADIOOFF */
88 -EINVAL, /* BCME_NOTBANDLOCKED */
89 -EINVAL, /* BCME_NOCLK */
90 -EINVAL, /* BCME_BADRATESET */
91 -EINVAL, /* BCME_BADBAND */
92 -E2BIG, /* BCME_BUFTOOSHORT */
93 -E2BIG, /* BCME_BUFTOOLONG */
94 -EBUSY, /* BCME_BUSY */
95 -EINVAL, /* BCME_NOTASSOCIATED */
96 -EINVAL, /* BCME_BADSSIDLEN */
97 -EINVAL, /* BCME_OUTOFRANGECHAN */
98 -EINVAL, /* BCME_BADCHAN */
99 -EFAULT, /* BCME_BADADDR */
100 -ENOMEM, /* BCME_NORESOURCE */
101 -EOPNOTSUPP, /* BCME_UNSUPPORTED */
102 -EMSGSIZE, /* BCME_BADLENGTH */
103 -EINVAL, /* BCME_NOTREADY */
104 -EPERM, /* BCME_NOTPERMITTED */
105 -ENOMEM, /* BCME_NOMEM */
106 -EINVAL, /* BCME_ASSOCIATED */
107 -ERANGE, /* BCME_RANGE */
108 -EINVAL, /* BCME_NOTFOUND */
109 -EINVAL, /* BCME_WME_NOT_ENABLED */
110 -EINVAL, /* BCME_TSPEC_NOTFOUND */
111 -EINVAL, /* BCME_ACM_NOTSUPPORTED */
112 -EINVAL, /* BCME_NOT_WME_ASSOCIATION */
113 -EIO, /* BCME_SDIO_ERROR */
114 -ENODEV, /* BCME_DONGLE_DOWN */
115 -EINVAL, /* BCME_VERSION */
116 -EIO, /* BCME_TXFAIL */
117 -EIO, /* BCME_RXFAIL */
118 -EINVAL, /* BCME_NODEVICE */
119 -EINVAL, /* BCME_NMODE_DISABLED */
120 -ENODATA, /* BCME_NONRESIDENT */
122 /* When an new error code is added to bcmutils.h, add os
123 * spcecific error translation here as well
125 /* check if BCME_LAST changed since the last time this function was updated */
127 #error "You need to add a OS error translation in the linuxbcmerrormap \
128 for new error code defined in bcmutils.h"
132 /* translate bcmerrors into linux errors */
133 int osl_error(int bcmerror)
137 else if (bcmerror < BCME_LAST)
138 bcmerror = BCME_ERROR;
140 /* Array bounds covered by ASSERT in osl_attach */
141 return linuxbcmerrormap[-bcmerror];
144 osl_t *osl_attach(void *pdev, uint bustype, bool pkttag)
148 osh = kmalloc(sizeof(osl_t), GFP_ATOMIC);
151 bzero(osh, sizeof(osl_t));
153 /* Check that error map has the right number of entries in it */
154 ASSERT(ABS(BCME_LAST) == (ARRAYSIZE(linuxbcmerrormap) - 1));
156 osh->magic = OS_HANDLE_MAGIC;
159 osh->dbgmem_list = NULL;
161 osh->pub.pkttag = pkttag;
162 osh->bustype = bustype;
168 osh->pub.mmbus = TRUE;
175 osh->pub.mmbus = FALSE;
182 #ifdef DHD_USE_STATIC_BUF
184 if (!bcm_static_buf) {
185 if (!(bcm_static_buf =
186 (bcm_static_buf_t *) dhd_os_prealloc(3,
187 STATIC_BUF_SIZE + STATIC_BUF_TOTAL_LEN))) {
188 printk(KERN_ERR "can not alloc static buf!\n");
190 printk(KERN_ERR "alloc static buf at %x!\n",
191 (unsigned int)bcm_static_buf);
193 init_MUTEX(&bcm_static_buf->static_sem);
195 bcm_static_buf->buf_ptr =
196 (unsigned char *)bcm_static_buf + STATIC_BUF_SIZE;
200 if (!bcm_static_skb) {
202 void *skb_buff_ptr = 0;
204 (bcm_static_pkt_t *) ((char *)bcm_static_buf + 2048);
205 skb_buff_ptr = dhd_os_prealloc(4, 0);
207 bcopy(skb_buff_ptr, bcm_static_skb,
208 sizeof(struct sk_buff *) * 16);
209 for (i = 0; i < MAX_STATIC_PKT_NUM * 2; i++)
210 bcm_static_skb->pkt_use[i] = 0;
212 init_MUTEX(&bcm_static_skb->osl_pkt_sem);
214 #endif /* DHD_USE_STATIC_BUF */
215 #if defined(BCMDBG) && !defined(BRCM_FULLMAC)
218 ASSERT(OSL_PKTTAG_SZ <= sizeof(skb->cb));
224 void osl_detach(osl_t *osh)
229 #ifdef DHD_USE_STATIC_BUF
236 ASSERT(osh->magic == OS_HANDLE_MAGIC);
240 /* Return a new packet. zero out pkttag */
241 void *BCMFASTPATH osl_pktget(osl_t *osh, uint len)
245 skb = dev_alloc_skb(len);
250 osh->pub.pktalloced++;
256 /* Free the driver packet. Free the tag if present */
257 void BCMFASTPATH osl_pktfree(osl_t *osh, void *p, bool send)
259 struct sk_buff *skb, *nskb;
262 skb = (struct sk_buff *)p;
265 if (send && osh->pub.tx_fn)
266 osh->pub.tx_fn(osh->pub.tx_ctx, p, 0);
268 /* perversion: we use skb->next to chain multi-skb packets */
274 /* cannot kfree_skb() on hard IRQ (net/core/skbuff.c) if
277 dev_kfree_skb_any(skb);
279 /* can free immediately (even in_irq()) if destructor
284 osh->pub.pktalloced--;
290 #ifdef DHD_USE_STATIC_BUF
291 void *osl_pktget_static(osl_t *osh, uint len)
296 if (len > (PAGE_SIZE * 2)) {
297 printk(KERN_ERR "Do we really need this big skb??\n");
298 return osl_pktget(osh, len);
301 down(&bcm_static_skb->osl_pkt_sem);
302 if (len <= PAGE_SIZE) {
303 for (i = 0; i < MAX_STATIC_PKT_NUM; i++) {
304 if (bcm_static_skb->pkt_use[i] == 0)
308 if (i != MAX_STATIC_PKT_NUM) {
309 bcm_static_skb->pkt_use[i] = 1;
310 up(&bcm_static_skb->osl_pkt_sem);
312 skb = bcm_static_skb->skb_4k[i];
313 skb->tail = skb->data + len;
320 for (i = 0; i < MAX_STATIC_PKT_NUM; i++) {
321 if (bcm_static_skb->pkt_use[i + MAX_STATIC_PKT_NUM] == 0)
325 if (i != MAX_STATIC_PKT_NUM) {
326 bcm_static_skb->pkt_use[i + MAX_STATIC_PKT_NUM] = 1;
327 up(&bcm_static_skb->osl_pkt_sem);
328 skb = bcm_static_skb->skb_8k[i];
329 skb->tail = skb->data + len;
335 up(&bcm_static_skb->osl_pkt_sem);
336 printk(KERN_ERR "all static pkt in use!\n");
337 return osl_pktget(osh, len);
340 void osl_pktfree_static(osl_t *osh, void *p, bool send)
344 for (i = 0; i < MAX_STATIC_PKT_NUM * 2; i++) {
345 if (p == bcm_static_skb->skb_4k[i]) {
346 down(&bcm_static_skb->osl_pkt_sem);
347 bcm_static_skb->pkt_use[i] = 0;
348 up(&bcm_static_skb->osl_pkt_sem);
353 return osl_pktfree(osh, p, send);
355 #endif /* DHD_USE_STATIC_BUF */
356 uint32 osl_pci_read_config(osl_t *osh, uint offset, uint size)
359 uint retry = PCI_CFG_RETRY;
361 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
363 /* only 4byte access supported */
367 pci_read_config_dword(osh->pdev, offset, &val);
368 if (val != 0xffffffff)
373 if (retry < PCI_CFG_RETRY)
374 printk("PCI CONFIG READ access to %d required %d retries\n",
375 offset, (PCI_CFG_RETRY - retry));
381 void osl_pci_write_config(osl_t *osh, uint offset, uint size, uint val)
383 uint retry = PCI_CFG_RETRY;
385 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
387 /* only 4byte access supported */
391 pci_write_config_dword(osh->pdev, offset, val);
392 if (offset != PCI_BAR0_WIN)
394 if (osl_pci_read_config(osh, offset, size) == val)
398 #if defined(BCMDBG) && !defined(BRCM_FULLMAC)
399 if (retry < PCI_CFG_RETRY)
400 printk("PCI CONFIG WRITE access to %d required %d retries\n",
401 offset, (PCI_CFG_RETRY - retry));
405 /* return bus # for the pci device pointed by osh->pdev */
406 uint osl_pci_bus(osl_t *osh)
408 ASSERT(osh && (osh->magic == OS_HANDLE_MAGIC) && osh->pdev);
410 return ((struct pci_dev *)osh->pdev)->bus->number;
413 /* return slot # for the pci device pointed by osh->pdev */
414 uint osl_pci_slot(osl_t *osh)
416 ASSERT(osh && (osh->magic == OS_HANDLE_MAGIC) && osh->pdev);
418 return PCI_SLOT(((struct pci_dev *)osh->pdev)->devfn);
421 void *osl_malloc(osl_t *osh, uint size)
425 /* only ASSERT if osh is defined */
427 ASSERT(osh->magic == OS_HANDLE_MAGIC);
429 #ifdef DHD_USE_STATIC_BUF
430 if (bcm_static_buf) {
432 if ((size >= PAGE_SIZE) && (size <= STATIC_BUF_SIZE)) {
433 down(&bcm_static_buf->static_sem);
434 for (i = 0; i < MAX_STATIC_BUF_NUM; i++) {
435 if (bcm_static_buf->buf_use[i] == 0)
438 if (i == MAX_STATIC_BUF_NUM) {
439 up(&bcm_static_buf->static_sem);
440 printk(KERN_ERR "all static buff in use!\n");
443 bcm_static_buf->buf_use[i] = 1;
444 up(&bcm_static_buf->static_sem);
446 bzero(bcm_static_buf->buf_ptr + STATIC_BUF_SIZE * i,
449 osh->malloced += size;
451 return (void *)(bcm_static_buf->buf_ptr +
452 STATIC_BUF_SIZE * i);
456 #endif /* DHD_USE_STATIC_BUF */
458 addr = kmalloc(size, GFP_ATOMIC);
465 osh->malloced += size;
470 void osl_mfree(osl_t *osh, void *addr, uint size)
472 #ifdef DHD_USE_STATIC_BUF
473 if (bcm_static_buf) {
474 if ((addr > (void *)bcm_static_buf) && ((unsigned char *)addr
475 <= ((unsigned char *)
477 STATIC_BUF_TOTAL_LEN))) {
480 ((unsigned char *)addr -
481 bcm_static_buf->buf_ptr) / STATIC_BUF_SIZE;
482 down(&bcm_static_buf->static_sem);
483 bcm_static_buf->buf_use[buf_idx] = 0;
484 up(&bcm_static_buf->static_sem);
487 ASSERT(osh->magic == OS_HANDLE_MAGIC);
488 osh->malloced -= size;
493 #endif /* DHD_USE_STATIC_BUF */
495 ASSERT(osh->magic == OS_HANDLE_MAGIC);
496 osh->malloced -= size;
501 uint osl_malloced(osl_t *osh)
503 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
504 return osh->malloced;
507 uint osl_dma_consistent_align(void)
513 void *osl_dma_alloc_consistent(osl_t *osh, uint size, unsigned long *pap)
515 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
517 return pci_alloc_consistent(osh->pdev, size, (dma_addr_t *) pap);
519 #else /* !BRCM_FULLMAC */
520 void *osl_dma_alloc_consistent(osl_t *osh, uint size, u16 align_bits,
521 uint *alloced, unsigned long *pap)
523 u16 align = (1 << align_bits);
524 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
526 if (!ISALIGNED(DMA_CONSISTENT_ALIGN, align))
530 return pci_alloc_consistent(osh->pdev, size, (dma_addr_t *) pap);
532 #endif /* BRCM_FULLMAC */
534 void osl_dma_free_consistent(osl_t *osh, void *va, uint size, unsigned long pa)
536 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
538 pci_free_consistent(osh->pdev, size, va, (dma_addr_t) pa);
541 uint BCMFASTPATH osl_dma_map(osl_t *osh, void *va, uint size, int direction)
545 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
546 dir = (direction == DMA_TX) ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE;
547 return pci_map_single(osh->pdev, va, size, dir);
550 void BCMFASTPATH osl_dma_unmap(osl_t *osh, uint pa, uint size, int direction)
554 ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
555 dir = (direction == DMA_TX) ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE;
556 pci_unmap_single(osh->pdev, (uint32) pa, size, dir);
559 #if defined(BCMDBG_ASSERT)
560 void osl_assert(char *exp, char *file, int line)
565 basename = strrchr(file, '/');
574 snprintf(tempbuf, 256,
575 "assertion \"%s\" failed: file \"%s\", line %d\n", exp,
578 /* Print assert message and give it time to be written to /var/log/messages */
579 if (!in_interrupt()) {
581 printk(KERN_ERR "%s", tempbuf);
582 printk(KERN_ERR "panic in %d seconds\n", delay);
583 set_current_state(TASK_INTERRUPTIBLE);
584 schedule_timeout(delay * HZ);
587 switch (g_assert_type) {
589 panic(KERN_ERR "%s", tempbuf);
592 printk(KERN_ERR "%s", tempbuf);
596 printk(KERN_ERR "%s", tempbuf);
601 #endif /* BCMDBG_ASSERT */
604 #endif /* defined(BCMDBG_ASSERT) */
606 void osl_delay(uint usec)
617 #if defined(BCMSDIO) && !defined(BRCM_FULLMAC)
618 u8 osl_readb(osl_t *osh, volatile u8 *r)
620 osl_rreg_fn_t rreg = ((osl_pubinfo_t *) osh)->rreg_fn;
621 void *ctx = ((osl_pubinfo_t *) osh)->reg_ctx;
623 return (u8) ((rreg) (ctx, (void *)r, sizeof(u8)));
626 u16 osl_readw(osl_t *osh, volatile u16 *r)
628 osl_rreg_fn_t rreg = ((osl_pubinfo_t *) osh)->rreg_fn;
629 void *ctx = ((osl_pubinfo_t *) osh)->reg_ctx;
631 return (u16) ((rreg) (ctx, (void *)r, sizeof(u16)));
634 uint32 osl_readl(osl_t *osh, volatile uint32 *r)
636 osl_rreg_fn_t rreg = ((osl_pubinfo_t *) osh)->rreg_fn;
637 void *ctx = ((osl_pubinfo_t *) osh)->reg_ctx;
639 return (uint32) ((rreg) (ctx, (void *)r, sizeof(uint32)));
642 void osl_writeb(osl_t *osh, volatile u8 *r, u8 v)
644 osl_wreg_fn_t wreg = ((osl_pubinfo_t *) osh)->wreg_fn;
645 void *ctx = ((osl_pubinfo_t *) osh)->reg_ctx;
647 ((wreg) (ctx, (void *)r, v, sizeof(u8)));
650 void osl_writew(osl_t *osh, volatile u16 *r, u16 v)
652 osl_wreg_fn_t wreg = ((osl_pubinfo_t *) osh)->wreg_fn;
653 void *ctx = ((osl_pubinfo_t *) osh)->reg_ctx;
655 ((wreg) (ctx, (void *)r, v, sizeof(u16)));
658 void osl_writel(osl_t *osh, volatile uint32 *r, uint32 v)
660 osl_wreg_fn_t wreg = ((osl_pubinfo_t *) osh)->wreg_fn;
661 void *ctx = ((osl_pubinfo_t *) osh)->reg_ctx;
663 ((wreg) (ctx, (void *)r, v, sizeof(uint32)));
666 /* Linux Kernel: File Operations: end */