/* * Linux OS Independent Layer * * Copyright (C) 1999-2014, Broadcom Corporation * * Unless you and Broadcom execute a separate written software license * agreement governing use of this software, this software is licensed to you * under the terms of the GNU General Public License version 2 (the "GPL"), * available at http://www.broadcom.com/licenses/GPLv2.php, with the * following added to such license: * * As a special exception, the copyright holders of this software give you * permission to link this software with independent modules, and to copy and * distribute the resulting executable under terms of your choice, provided that * you also meet, for each linked independent module, the terms and conditions of * the license of that module. An independent module is a module which is not * derived from this software. The special exception does not apply to any * modifications of the software. * * Notwithstanding the above, under no circumstances may you combine this * software in any way with any other Broadcom software provided under a license * other than the GPL, without Broadcom's express prior written consent. * * $Id: linux_osl.c 451649 2014-01-27 17:23:38Z $ */ #define LINUX_PORT #include #include #include #include #include #include #include #include #include #define PCI_CFG_RETRY 10 #define OS_HANDLE_MAGIC 0x1234abcd /* Magic # to recognize osh */ #define BCM_MEM_FILENAME_LEN 24 /* Mem. filename length */ #define DUMPBUFSZ 1024 #ifdef CONFIG_DHD_USE_STATIC_BUF #define DHD_SKB_HDRSIZE 336 #define DHD_SKB_1PAGE_BUFSIZE ((PAGE_SIZE*1)-DHD_SKB_HDRSIZE) #define DHD_SKB_2PAGE_BUFSIZE ((PAGE_SIZE*2)-DHD_SKB_HDRSIZE) #define DHD_SKB_4PAGE_BUFSIZE ((PAGE_SIZE*4)-DHD_SKB_HDRSIZE) #define STATIC_BUF_MAX_NUM 16 #define STATIC_BUF_SIZE (PAGE_SIZE*2) #define STATIC_BUF_TOTAL_LEN (STATIC_BUF_MAX_NUM * STATIC_BUF_SIZE) typedef struct bcm_static_buf { struct semaphore static_sem; unsigned char *buf_ptr; unsigned char buf_use[STATIC_BUF_MAX_NUM]; } bcm_static_buf_t; static bcm_static_buf_t *bcm_static_buf = 0; #define STATIC_PKT_MAX_NUM 8 #if defined(ENHANCED_STATIC_BUF) #define STATIC_PKT_4PAGE_NUM 1 #define DHD_SKB_MAX_BUFSIZE DHD_SKB_4PAGE_BUFSIZE #else #define STATIC_PKT_4PAGE_NUM 0 #define DHD_SKB_MAX_BUFSIZE DHD_SKB_2PAGE_BUFSIZE #endif /* ENHANCED_STATIC_BUF */ typedef struct bcm_static_pkt { struct sk_buff *skb_4k[STATIC_PKT_MAX_NUM]; struct sk_buff *skb_8k[STATIC_PKT_MAX_NUM]; #ifdef ENHANCED_STATIC_BUF struct sk_buff *skb_16k; #endif struct semaphore osl_pkt_sem; unsigned char pkt_use[STATIC_PKT_MAX_NUM * 2 + STATIC_PKT_4PAGE_NUM]; } bcm_static_pkt_t; static bcm_static_pkt_t *bcm_static_skb = 0; void* wifi_platform_prealloc(void *adapter, int section, unsigned long size); #endif /* CONFIG_DHD_USE_STATIC_BUF */ typedef struct bcm_mem_link { struct bcm_mem_link *prev; struct bcm_mem_link *next; uint size; int line; void *osh; char file[BCM_MEM_FILENAME_LEN]; } bcm_mem_link_t; struct osl_cmn_info { atomic_t malloced; atomic_t pktalloced; /* Number of allocated packet buffers */ spinlock_t dbgmem_lock; bcm_mem_link_t *dbgmem_list; spinlock_t pktalloc_lock; atomic_t refcount; /* Number of references to this shared structure. */ }; typedef struct osl_cmn_info osl_cmn_t; struct osl_info { osl_pubinfo_t pub; #ifdef CTFPOOL ctfpool_t *ctfpool; #endif /* CTFPOOL */ uint magic; void *pdev; uint failed; uint bustype; osl_cmn_t *cmn; /* Common OSL related data shred between two OSH's */ void *bus_handle; }; #define OSL_PKTTAG_CLEAR(p) \ do { \ struct sk_buff *s = (struct sk_buff *)(p); \ ASSERT(OSL_PKTTAG_SZ == 32); \ *(uint32 *)(&s->cb[0]) = 0; *(uint32 *)(&s->cb[4]) = 0; \ *(uint32 *)(&s->cb[8]) = 0; *(uint32 *)(&s->cb[12]) = 0; \ *(uint32 *)(&s->cb[16]) = 0; *(uint32 *)(&s->cb[20]) = 0; \ *(uint32 *)(&s->cb[24]) = 0; *(uint32 *)(&s->cb[28]) = 0; \ } while (0) /* PCMCIA attribute space access macros */ /* Global ASSERT type flag */ uint32 g_assert_type = FALSE; 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_EPERM */ -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 */ -EINVAL, /* BCME_VERSION */ -EIO, /* BCME_TXFAIL */ -EIO, /* BCME_RXFAIL */ -ENODEV, /* BCME_NODEVICE */ -EINVAL, /* BCME_NMODE_DISABLED */ -ENODATA, /* BCME_NONRESIDENT */ -EINVAL, /* BCME_SCANREJECT */ -EINVAL, /* BCME_USAGE_ERROR */ -EIO, /* BCME_IOCTL_ERROR */ -EIO, /* BCME_SERIAL_PORT_ERR */ -EOPNOTSUPP, /* BCME_DISABLED, BCME_NOTENABLED */ -EIO, /* BCME_DECERR */ -EIO, /* BCME_ENCERR */ -EIO, /* BCME_MICERR */ -ERANGE, /* BCME_REPLAY */ -EINVAL, /* BCME_IE_NOTFOUND */ /* When an new error code is added to bcmutils.h, add os * specific error translation here as well */ /* check if BCME_LAST changed since the last time this function was updated */ #if BCME_LAST != -52 #error "You need to add a OS error translation in the linuxbcmerrormap \ for new error code defined in bcmutils.h" #endif }; /* translate bcmerrors into linux errors */ int osl_error(int bcmerror) { if (bcmerror > 0) bcmerror = 0; else if (bcmerror < BCME_LAST) bcmerror = BCME_ERROR; /* Array bounds covered by ASSERT in osl_attach */ return linuxbcmerrormap[-bcmerror]; } #ifdef SHARED_OSL_CMN osl_t * osl_attach(void *pdev, uint bustype, bool pkttag, void **osl_cmn) { #else osl_t * osl_attach(void *pdev, uint bustype, bool pkttag) { void **osl_cmn = NULL; #endif /* SHARED_OSL_CMN */ osl_t *osh; gfp_t flags; flags = CAN_SLEEP() ? GFP_KERNEL: GFP_ATOMIC; if (!(osh = kmalloc(sizeof(osl_t), flags))) return osh; ASSERT(osh); bzero(osh, sizeof(osl_t)); if (osl_cmn == NULL || *osl_cmn == NULL) { if (!(osh->cmn = kmalloc(sizeof(osl_cmn_t), flags))) { kfree(osh); return NULL; } bzero(osh->cmn, sizeof(osl_cmn_t)); if (osl_cmn) *osl_cmn = osh->cmn; atomic_set(&osh->cmn->malloced, 0); osh->cmn->dbgmem_list = NULL; spin_lock_init(&(osh->cmn->dbgmem_lock)); spin_lock_init(&(osh->cmn->pktalloc_lock)); } else { osh->cmn = *osl_cmn; } atomic_add(1, &osh->cmn->refcount); /* Check that error map has the right number of entries in it */ ASSERT(ABS(BCME_LAST) == (ARRAYSIZE(linuxbcmerrormap) - 1)); osh->failed = 0; osh->pdev = pdev; osh->pub.pkttag = pkttag; osh->bustype = bustype; osh->magic = OS_HANDLE_MAGIC; switch (bustype) { case PCI_BUS: case SI_BUS: case PCMCIA_BUS: osh->pub.mmbus = TRUE; break; case JTAG_BUS: case SDIO_BUS: case USB_BUS: case SPI_BUS: case RPC_BUS: osh->pub.mmbus = FALSE; break; default: ASSERT(FALSE); break; } return osh; } int osl_static_mem_init(osl_t *osh, void *adapter) { #if defined(CONFIG_DHD_USE_STATIC_BUF) if (!bcm_static_buf && adapter) { if (!(bcm_static_buf = (bcm_static_buf_t *)wifi_platform_prealloc(adapter, 3, STATIC_BUF_SIZE + STATIC_BUF_TOTAL_LEN))) { printk("can not alloc static buf!\n"); bcm_static_skb = NULL; ASSERT(osh->magic == OS_HANDLE_MAGIC); kfree(osh); return -ENOMEM; } else printk("alloc static buf at %x!\n", (unsigned int)bcm_static_buf); sema_init(&bcm_static_buf->static_sem, 1); bcm_static_buf->buf_ptr = (unsigned char *)bcm_static_buf + STATIC_BUF_SIZE; } if (!bcm_static_skb && adapter) { int i; void *skb_buff_ptr = 0; bcm_static_skb = (bcm_static_pkt_t *)((char *)bcm_static_buf + 2048); skb_buff_ptr = wifi_platform_prealloc(adapter, 4, 0); if (!skb_buff_ptr) { printk("cannot alloc static buf!\n"); bcm_static_buf = NULL; bcm_static_skb = NULL; ASSERT(osh->magic == OS_HANDLE_MAGIC); kfree(osh); return -ENOMEM; } bcopy(skb_buff_ptr, bcm_static_skb, sizeof(struct sk_buff *) * (STATIC_PKT_MAX_NUM * 2 + STATIC_PKT_4PAGE_NUM)); for (i = 0; i < STATIC_PKT_MAX_NUM * 2 + STATIC_PKT_4PAGE_NUM; i++) bcm_static_skb->pkt_use[i] = 0; sema_init(&bcm_static_skb->osl_pkt_sem, 1); } #endif /* CONFIG_DHD_USE_STATIC_BUF */ return 0; } void osl_set_bus_handle(osl_t *osh, void *bus_handle) { osh->bus_handle = bus_handle; } void* osl_get_bus_handle(osl_t *osh) { return osh->bus_handle; } void osl_detach(osl_t *osh) { if (osh == NULL) return; ASSERT(osh->magic == OS_HANDLE_MAGIC); atomic_sub(1, &osh->cmn->refcount); if (atomic_read(&osh->cmn->refcount) == 0) { kfree(osh->cmn); } kfree(osh); } int osl_static_mem_deinit(osl_t *osh, void *adapter) { #ifdef CONFIG_DHD_USE_STATIC_BUF if (bcm_static_buf) { bcm_static_buf = 0; } if (bcm_static_skb) { bcm_static_skb = 0; } #endif return 0; } static struct sk_buff *osl_alloc_skb(osl_t *osh, unsigned int len) { struct sk_buff *skb; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25) gfp_t flags = (in_atomic() || irqs_disabled()) ? GFP_ATOMIC : GFP_KERNEL; #if defined(CONFIG_SPARSEMEM) && defined(CONFIG_ZONE_DMA) flags |= GFP_ATOMIC; #endif skb = __dev_alloc_skb(len, flags); #else skb = dev_alloc_skb(len); #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25) */ return skb; } #ifdef CTFPOOL #ifdef CTFPOOL_SPINLOCK #define CTFPOOL_LOCK(ctfpool, flags) spin_lock_irqsave(&(ctfpool)->lock, flags) #define CTFPOOL_UNLOCK(ctfpool, flags) spin_unlock_irqrestore(&(ctfpool)->lock, flags) #else #define CTFPOOL_LOCK(ctfpool, flags) spin_lock_bh(&(ctfpool)->lock) #define CTFPOOL_UNLOCK(ctfpool, flags) spin_unlock_bh(&(ctfpool)->lock) #endif /* CTFPOOL_SPINLOCK */ /* * Allocate and add an object to packet pool. */ void * osl_ctfpool_add(osl_t *osh) { struct sk_buff *skb; #ifdef CTFPOOL_SPINLOCK unsigned long flags; #endif /* CTFPOOL_SPINLOCK */ if ((osh == NULL) || (osh->ctfpool == NULL)) return NULL; CTFPOOL_LOCK(osh->ctfpool, flags); ASSERT(osh->ctfpool->curr_obj <= osh->ctfpool->max_obj); /* No need to allocate more objects */ if (osh->ctfpool->curr_obj == osh->ctfpool->max_obj) { CTFPOOL_UNLOCK(osh->ctfpool, flags); return NULL; } /* Allocate a new skb and add it to the ctfpool */ skb = osl_alloc_skb(osh, osh->ctfpool->obj_size); if (skb == NULL) { printf("%s: skb alloc of len %d failed\n", __FUNCTION__, osh->ctfpool->obj_size); CTFPOOL_UNLOCK(osh->ctfpool, flags); return NULL; } /* Add to ctfpool */ skb->next = (struct sk_buff *)osh->ctfpool->head; osh->ctfpool->head = skb; osh->ctfpool->fast_frees++; osh->ctfpool->curr_obj++; /* Hijack a skb member to store ptr to ctfpool */ CTFPOOLPTR(osh, skb) = (void *)osh->ctfpool; /* Use bit flag to indicate skb from fast ctfpool */ PKTFAST(osh, skb) = FASTBUF; CTFPOOL_UNLOCK(osh->ctfpool, flags); return skb; } /* * Add new objects to the pool. */ void osl_ctfpool_replenish(osl_t *osh, uint thresh) { if ((osh == NULL) || (osh->ctfpool == NULL)) return; /* Do nothing if no refills are required */ while ((osh->ctfpool->refills > 0) && (thresh--)) { osl_ctfpool_add(osh); osh->ctfpool->refills--; } } /* * Initialize the packet pool with specified number of objects. */ int32 osl_ctfpool_init(osl_t *osh, uint numobj, uint size) { gfp_t flags; flags = CAN_SLEEP() ? GFP_KERNEL: GFP_ATOMIC; osh->ctfpool = kzalloc(sizeof(ctfpool_t), flags); ASSERT(osh->ctfpool); osh->ctfpool->max_obj = numobj; osh->ctfpool->obj_size = size; spin_lock_init(&osh->ctfpool->lock); while (numobj--) { if (!osl_ctfpool_add(osh)) return -1; osh->ctfpool->fast_frees--; } return 0; } /* * Cleanup the packet pool objects. */ void osl_ctfpool_cleanup(osl_t *osh) { struct sk_buff *skb, *nskb; #ifdef CTFPOOL_SPINLOCK unsigned long flags; #endif /* CTFPOOL_SPINLOCK */ if ((osh == NULL) || (osh->ctfpool == NULL)) return; CTFPOOL_LOCK(osh->ctfpool, flags); skb = osh->ctfpool->head; while (skb != NULL) { nskb = skb->next; dev_kfree_skb(skb); skb = nskb; osh->ctfpool->curr_obj--; } ASSERT(osh->ctfpool->curr_obj == 0); osh->ctfpool->head = NULL; CTFPOOL_UNLOCK(osh->ctfpool, flags); kfree(osh->ctfpool); osh->ctfpool = NULL; } void osl_ctfpool_stats(osl_t *osh, void *b) { struct bcmstrbuf *bb; if ((osh == NULL) || (osh->ctfpool == NULL)) return; #ifdef CONFIG_DHD_USE_STATIC_BUF if (bcm_static_buf) { bcm_static_buf = 0; } if (bcm_static_skb) { bcm_static_skb = 0; } #endif /* CONFIG_DHD_USE_STATIC_BUF */ bb = b; ASSERT((osh != NULL) && (bb != NULL)); bcm_bprintf(bb, "max_obj %d obj_size %d curr_obj %d refills %d\n", osh->ctfpool->max_obj, osh->ctfpool->obj_size, osh->ctfpool->curr_obj, osh->ctfpool->refills); bcm_bprintf(bb, "fast_allocs %d fast_frees %d slow_allocs %d\n", osh->ctfpool->fast_allocs, osh->ctfpool->fast_frees, osh->ctfpool->slow_allocs); } static inline struct sk_buff * osl_pktfastget(osl_t *osh, uint len) { struct sk_buff *skb; #ifdef CTFPOOL_SPINLOCK unsigned long flags; #endif /* CTFPOOL_SPINLOCK */ /* Try to do fast allocate. Return null if ctfpool is not in use * or if there are no items in the ctfpool. */ if (osh->ctfpool == NULL) return NULL; CTFPOOL_LOCK(osh->ctfpool, flags); if (osh->ctfpool->head == NULL) { ASSERT(osh->ctfpool->curr_obj == 0); osh->ctfpool->slow_allocs++; CTFPOOL_UNLOCK(osh->ctfpool, flags); return NULL; } if (len > osh->ctfpool->obj_size) { CTFPOOL_UNLOCK(osh->ctfpool, flags); return NULL; } ASSERT(len <= osh->ctfpool->obj_size); /* Get an object from ctfpool */ skb = (struct sk_buff *)osh->ctfpool->head; osh->ctfpool->head = (void *)skb->next; osh->ctfpool->fast_allocs++; osh->ctfpool->curr_obj--; ASSERT(CTFPOOLHEAD(osh, skb) == (struct sock *)osh->ctfpool->head); CTFPOOL_UNLOCK(osh->ctfpool, flags); /* Init skb struct */ skb->next = skb->prev = NULL; skb->data = skb->head + 16; skb->tail = skb->head + 16; skb->len = 0; skb->cloned = 0; #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 14) skb->list = NULL; #endif atomic_set(&skb->users, 1); PKTSETCLINK(skb, NULL); PKTCCLRATTR(skb); PKTFAST(osh, skb) &= ~(CTFBUF | SKIPCT | CHAINED); return skb; } #endif /* CTFPOOL */ /* Convert a driver packet to native(OS) packet * In the process, packettag is zeroed out before sending up * IP code depends on skb->cb to be setup correctly with various options * In our case, that means it should be 0 */ struct sk_buff * BCMFASTPATH osl_pkt_tonative(osl_t *osh, void *pkt) { struct sk_buff *nskb; if (osh->pub.pkttag) OSL_PKTTAG_CLEAR(pkt); /* Decrement the packet counter */ for (nskb = (struct sk_buff *)pkt; nskb; nskb = nskb->next) { atomic_sub(PKTISCHAINED(nskb) ? PKTCCNT(nskb) : 1, &osh->cmn->pktalloced); } return (struct sk_buff *)pkt; } /* Convert a native(OS) packet to driver packet. * In the process, native packet is destroyed, there is no copying * Also, a packettag is zeroed out */ void * BCMFASTPATH osl_pkt_frmnative(osl_t *osh, void *pkt) { struct sk_buff *nskb; if (osh->pub.pkttag) OSL_PKTTAG_CLEAR(pkt); /* Increment the packet counter */ for (nskb = (struct sk_buff *)pkt; nskb; nskb = nskb->next) { atomic_add(PKTISCHAINED(nskb) ? PKTCCNT(nskb) : 1, &osh->cmn->pktalloced); } return (void *)pkt; } /* Return a new packet. zero out pkttag */ void * BCMFASTPATH osl_pktget(osl_t *osh, uint len) { struct sk_buff *skb; #ifdef CTFPOOL /* Allocate from local pool */ skb = osl_pktfastget(osh, len); if ((skb != NULL) || ((skb = osl_alloc_skb(osh, len)) != NULL)) { #else /* CTFPOOL */ if ((skb = osl_alloc_skb(osh, len))) { #endif /* CTFPOOL */ skb->tail += len; skb->len += len; skb->priority = 0; atomic_inc(&osh->cmn->pktalloced); } return ((void*) skb); } #ifdef CTFPOOL static inline void osl_pktfastfree(osl_t *osh, struct sk_buff *skb) { ctfpool_t *ctfpool; #ifdef CTFPOOL_SPINLOCK unsigned long flags; #endif /* CTFPOOL_SPINLOCK */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 14) skb->tstamp.tv.sec = 0; #else skb->stamp.tv_sec = 0; #endif /* We only need to init the fields that we change */ skb->dev = NULL; #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36) skb->dst = NULL; #endif OSL_PKTTAG_CLEAR(skb); skb->ip_summed = 0; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 36) skb_orphan(skb); #else skb->destructor = NULL; #endif ctfpool = (ctfpool_t *)CTFPOOLPTR(osh, skb); ASSERT(ctfpool != NULL); /* Add object to the ctfpool */ CTFPOOL_LOCK(ctfpool, flags); skb->next = (struct sk_buff *)ctfpool->head; ctfpool->head = (void *)skb; ctfpool->fast_frees++; ctfpool->curr_obj++; ASSERT(ctfpool->curr_obj <= ctfpool->max_obj); CTFPOOL_UNLOCK(ctfpool, flags); } #endif /* CTFPOOL */ /* Free the driver packet. Free the tag if present */ void BCMFASTPATH osl_pktfree(osl_t *osh, void *p, bool send) { struct sk_buff *skb, *nskb; if (osh == NULL) return; skb = (struct sk_buff*) p; if (send && osh->pub.tx_fn) osh->pub.tx_fn(osh->pub.tx_ctx, p, 0); PKTDBG_TRACE(osh, (void *) skb, PKTLIST_PKTFREE); /* perversion: we use skb->next to chain multi-skb packets */ while (skb) { nskb = skb->next; skb->next = NULL; #ifdef CTFPOOL if (PKTISFAST(osh, skb)) { if (atomic_read(&skb->users) == 1) smp_rmb(); else if (!atomic_dec_and_test(&skb->users)) goto next_skb; osl_pktfastfree(osh, skb); } else #endif { 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); } #ifdef CTFPOOL next_skb: #endif atomic_dec(&osh->cmn->pktalloced); skb = nskb; } } #ifdef CONFIG_DHD_USE_STATIC_BUF void* osl_pktget_static(osl_t *osh, uint len) { int i = 0; struct sk_buff *skb; if (len > DHD_SKB_MAX_BUFSIZE) { printk("%s: attempt to allocate huge packet (0x%x)\n", __FUNCTION__, len); return osl_pktget(osh, len); } down(&bcm_static_skb->osl_pkt_sem); if (len <= DHD_SKB_1PAGE_BUFSIZE) { for (i = 0; i < STATIC_PKT_MAX_NUM; i++) { if (bcm_static_skb->pkt_use[i] == 0) break; } if (i != STATIC_PKT_MAX_NUM) { bcm_static_skb->pkt_use[i] = 1; skb = bcm_static_skb->skb_4k[i]; skb->tail = skb->data + len; skb->len = len; up(&bcm_static_skb->osl_pkt_sem); return skb; } } if (len <= DHD_SKB_2PAGE_BUFSIZE) { for (i = 0; i < STATIC_PKT_MAX_NUM; i++) { if (bcm_static_skb->pkt_use[i + STATIC_PKT_MAX_NUM] == 0) break; } if (i != STATIC_PKT_MAX_NUM) { bcm_static_skb->pkt_use[i + STATIC_PKT_MAX_NUM] = 1; skb = bcm_static_skb->skb_8k[i]; skb->tail = skb->data + len; skb->len = len; up(&bcm_static_skb->osl_pkt_sem); return skb; } } #if defined(ENHANCED_STATIC_BUF) if (bcm_static_skb->pkt_use[STATIC_PKT_MAX_NUM * 2] == 0) { bcm_static_skb->pkt_use[STATIC_PKT_MAX_NUM * 2] = 1; skb = bcm_static_skb->skb_16k; skb->tail = skb->data + len; skb->len = len; up(&bcm_static_skb->osl_pkt_sem); return skb; } #endif up(&bcm_static_skb->osl_pkt_sem); printk("%s: all static pkt in use!\n", __FUNCTION__); return osl_pktget(osh, len); } void osl_pktfree_static(osl_t *osh, void *p, bool send) { int i; if (!bcm_static_skb) { osl_pktfree(osh, p, send); return; } down(&bcm_static_skb->osl_pkt_sem); for (i = 0; i < STATIC_PKT_MAX_NUM; i++) { if (p == bcm_static_skb->skb_4k[i]) { bcm_static_skb->pkt_use[i] = 0; up(&bcm_static_skb->osl_pkt_sem); return; } } for (i = 0; i < STATIC_PKT_MAX_NUM; i++) { if (p == bcm_static_skb->skb_8k[i]) { bcm_static_skb->pkt_use[i + STATIC_PKT_MAX_NUM] = 0; up(&bcm_static_skb->osl_pkt_sem); return; } } #ifdef ENHANCED_STATIC_BUF if (p == bcm_static_skb->skb_16k) { bcm_static_skb->pkt_use[STATIC_PKT_MAX_NUM * 2] = 0; up(&bcm_static_skb->osl_pkt_sem); return; } #endif up(&bcm_static_skb->osl_pkt_sem); osl_pktfree(osh, p, send); } #endif /* CONFIG_DHD_USE_STATIC_BUF */ uint32 osl_pci_read_config(osl_t *osh, uint offset, uint size) { uint val = 0; uint retry = PCI_CFG_RETRY; ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC))); /* only 4byte access supported */ ASSERT(size == 4); do { pci_read_config_dword(osh->pdev, offset, &val); if (val != 0xffffffff) break; } while (retry--); return (val); } void osl_pci_write_config(osl_t *osh, uint offset, uint size, uint val) { uint retry = PCI_CFG_RETRY; ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC))); /* only 4byte access supported */ ASSERT(size == 4); do { pci_write_config_dword(osh->pdev, offset, val); if (offset != PCI_BAR0_WIN) break; if (osl_pci_read_config(osh, offset, size) == val) break; } while (retry--); } /* return bus # for the pci device pointed by osh->pdev */ uint osl_pci_bus(osl_t *osh) { ASSERT(osh && (osh->magic == OS_HANDLE_MAGIC) && osh->pdev); return ((struct pci_dev *)osh->pdev)->bus->number; } /* return slot # for the pci device pointed by osh->pdev */ uint osl_pci_slot(osl_t *osh) { ASSERT(osh && (osh->magic == OS_HANDLE_MAGIC) && osh->pdev); #if 0 > KERNEL_VERSION(2, 6, 35) return PCI_SLOT(((struct pci_dev *)osh->pdev)->devfn) + 1; #else return PCI_SLOT(((struct pci_dev *)osh->pdev)->devfn); #endif } /* return the pci device pointed by osh->pdev */ struct pci_dev * osl_pci_device(osl_t *osh) { ASSERT(osh && (osh->magic == OS_HANDLE_MAGIC) && osh->pdev); return osh->pdev; } static void osl_pcmcia_attr(osl_t *osh, uint offset, char *buf, int size, bool write) { } void osl_pcmcia_read_attr(osl_t *osh, uint offset, void *buf, int size) { osl_pcmcia_attr(osh, offset, (char *) buf, size, FALSE); } void osl_pcmcia_write_attr(osl_t *osh, uint offset, void *buf, int size) { osl_pcmcia_attr(osh, offset, (char *) buf, size, TRUE); } void * osl_malloc(osl_t *osh, uint size) { void *addr; gfp_t flags; /* only ASSERT if osh is defined */ if (osh) ASSERT(osh->magic == OS_HANDLE_MAGIC); #ifdef CONFIG_DHD_USE_STATIC_BUF if (bcm_static_buf) { int i = 0; if ((size >= PAGE_SIZE)&&(size <= STATIC_BUF_SIZE)) { down(&bcm_static_buf->static_sem); for (i = 0; i < STATIC_BUF_MAX_NUM; i++) { if (bcm_static_buf->buf_use[i] == 0) break; } if (i == STATIC_BUF_MAX_NUM) { up(&bcm_static_buf->static_sem); printk("all static buff in use!\n"); goto original; } bcm_static_buf->buf_use[i] = 1; up(&bcm_static_buf->static_sem); bzero(bcm_static_buf->buf_ptr+STATIC_BUF_SIZE*i, size); if (osh) atomic_add(size, &osh->cmn->malloced); return ((void *)(bcm_static_buf->buf_ptr+STATIC_BUF_SIZE*i)); } } original: #endif /* CONFIG_DHD_USE_STATIC_BUF */ flags = CAN_SLEEP() ? GFP_KERNEL: GFP_ATOMIC; if ((addr = kmalloc(size, flags)) == NULL) { if (osh) osh->failed++; return (NULL); } if (osh && osh->cmn) atomic_add(size, &osh->cmn->malloced); return (addr); } void * osl_mallocz(osl_t *osh, uint size) { void *ptr; ptr = osl_malloc(osh, size); if (ptr != NULL) { bzero(ptr, size); } return ptr; } void osl_mfree(osl_t *osh, void *addr, uint size) { #ifdef CONFIG_DHD_USE_STATIC_BUF if (bcm_static_buf) { if ((addr > (void *)bcm_static_buf) && ((unsigned char *)addr <= ((unsigned char *)bcm_static_buf + STATIC_BUF_TOTAL_LEN))) { int buf_idx = 0; buf_idx = ((unsigned char *)addr - bcm_static_buf->buf_ptr)/STATIC_BUF_SIZE; down(&bcm_static_buf->static_sem); bcm_static_buf->buf_use[buf_idx] = 0; up(&bcm_static_buf->static_sem); if (osh && osh->cmn) { ASSERT(osh->magic == OS_HANDLE_MAGIC); atomic_sub(size, &osh->cmn->malloced); } return; } } #endif /* CONFIG_DHD_USE_STATIC_BUF */ if (osh && osh->cmn) { ASSERT(osh->magic == OS_HANDLE_MAGIC); ASSERT(size <= osl_malloced(osh)); atomic_sub(size, &osh->cmn->malloced); } kfree(addr); } uint osl_check_memleak(osl_t *osh) { ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC))); if (atomic_read(&osh->cmn->refcount) == 1) return (atomic_read(&osh->cmn->malloced)); else return 0; } uint osl_malloced(osl_t *osh) { ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC))); return (atomic_read(&osh->cmn->malloced)); } uint osl_malloc_failed(osl_t *osh) { ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC))); return (osh->failed); } uint osl_dma_consistent_align(void) { return (PAGE_SIZE); } void* osl_dma_alloc_consistent(osl_t *osh, uint size, uint16 align_bits, uint *alloced, dmaaddr_t *pap) { void *va; uint16 align = (1 << align_bits); ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC))); if (!ISALIGNED(DMA_CONSISTENT_ALIGN, align)) size += align; *alloced = size; { dma_addr_t pap_lin; va = pci_alloc_consistent(osh->pdev, size, &pap_lin); *pap = (dmaaddr_t)pap_lin; } return va; } void osl_dma_free_consistent(osl_t *osh, void *va, uint size, dmaaddr_t pa) { ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC))); pci_free_consistent(osh->pdev, size, va, (dma_addr_t)pa); } dmaaddr_t BCMFASTPATH osl_dma_map(osl_t *osh, void *va, uint size, int direction, void *p, hnddma_seg_map_t *dmah) { int dir; ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC))); dir = (direction == DMA_TX)? PCI_DMA_TODEVICE: PCI_DMA_FROMDEVICE; return (pci_map_single(osh->pdev, va, size, dir)); } void BCMFASTPATH osl_dma_unmap(osl_t *osh, uint pa, uint size, int direction) { int dir; ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC))); dir = (direction == DMA_TX)? PCI_DMA_TODEVICE: PCI_DMA_FROMDEVICE; pci_unmap_single(osh->pdev, (uint32)pa, size, dir); } #if defined(BCMASSERT_LOG) void osl_assert(const char *exp, const char *file, int line) { char tempbuf[256]; const char *basename; basename = strrchr(file, '/'); /* skip the '/' */ if (basename) basename++; if (!basename) basename = file; #ifdef BCMASSERT_LOG snprintf(tempbuf, 64, "\"%s\": file \"%s\", line %d\n", exp, basename, line); printk("%s", tempbuf); #endif /* BCMASSERT_LOG */ } #endif void osl_delay(uint usec) { uint d; while (usec > 0) { d = MIN(usec, 1000); udelay(d); usec -= d; } } void osl_sleep(uint ms) { #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 36) if (ms < 20) usleep_range(ms*1000, ms*1000 + 1000); else #endif msleep(ms); } /* Clone a packet. * The pkttag contents are NOT cloned. */ void * osl_pktdup(osl_t *osh, void *skb) { void * p; ASSERT(!PKTISCHAINED(skb)); /* clear the CTFBUF flag if set and map the rest of the buffer * before cloning. */ PKTCTFMAP(osh, skb); #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 36) if ((p = pskb_copy((struct sk_buff *)skb, GFP_ATOMIC)) == NULL) #else if ((p = skb_clone((struct sk_buff *)skb, GFP_ATOMIC)) == NULL) #endif return NULL; #ifdef CTFPOOL if (PKTISFAST(osh, skb)) { ctfpool_t *ctfpool; /* if the buffer allocated from ctfpool is cloned then * we can't be sure when it will be freed. since there * is a chance that we will be losing a buffer * from our pool, we increment the refill count for the * object to be alloced later. */ ctfpool = (ctfpool_t *)CTFPOOLPTR(osh, skb); ASSERT(ctfpool != NULL); PKTCLRFAST(osh, p); PKTCLRFAST(osh, skb); ctfpool->refills++; } #endif /* CTFPOOL */ /* Clear PKTC context */ PKTSETCLINK(p, NULL); PKTCCLRFLAGS(p); PKTCSETCNT(p, 1); PKTCSETLEN(p, PKTLEN(osh, skb)); /* skb_clone copies skb->cb.. we don't want that */ if (osh->pub.pkttag) OSL_PKTTAG_CLEAR(p); /* Increment the packet counter */ atomic_inc(&osh->cmn->pktalloced); return (p); } /* * OSLREGOPS specifies the use of osl_XXX routines to be used for register access */ /* * BINOSL selects the slightly slower function-call-based binary compatible osl. */ uint osl_pktalloced(osl_t *osh) { if (atomic_read(&osh->cmn->refcount) == 1) return (atomic_read(&osh->cmn->pktalloced)); else return 0; } /* Linux Kernel: File Operations: start */ void * osl_os_open_image(char *filename) { struct file *fp; fp = filp_open(filename, O_RDONLY, 0); /* * 2.6.11 (FC4) supports filp_open() but later revs don't? * Alternative: * fp = open_namei(AT_FDCWD, filename, O_RD, 0); * ??? */ if (IS_ERR(fp)) fp = NULL; return fp; } int osl_os_get_image_block(char *buf, int len, void *image) { struct file *fp = (struct file *)image; int rdlen; if (!image) return 0; rdlen = kernel_read(fp, fp->f_pos, buf, len); if (rdlen > 0) fp->f_pos += rdlen; return rdlen; } void osl_os_close_image(void *image) { if (image) filp_close((struct file *)image, NULL); } int osl_os_image_size(void *image) { int len = 0, curroffset; if (image) { /* store the current offset */ curroffset = generic_file_llseek(image, 0, 1); /* goto end of file to get length */ len = generic_file_llseek(image, 0, 2); /* restore back the offset */ generic_file_llseek(image, curroffset, 0); } return len; } /* Linux Kernel: File Operations: end */