diff options
Diffstat (limited to 'drivers/net/wireless/bcm4329/linux_osl.c')
| -rw-r--r-- | drivers/net/wireless/bcm4329/linux_osl.c | 622 |
1 files changed, 622 insertions, 0 deletions
diff --git a/drivers/net/wireless/bcm4329/linux_osl.c b/drivers/net/wireless/bcm4329/linux_osl.c new file mode 100644 index 0000000..d00bd1c --- /dev/null +++ b/drivers/net/wireless/bcm4329/linux_osl.c @@ -0,0 +1,622 @@ +/* + * Linux OS Independent Layer + * + * Copyright (C) 1999-2010, 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,v 1.125.12.3.8.7 2010/05/04 21:10:04 Exp $ + */ + + +#define LINUX_OSL + +#include <typedefs.h> +#include <bcmendian.h> +#include <linuxver.h> +#include <bcmdefs.h> +#include <osl.h> +#include <bcmutils.h> +#include <linux/delay.h> +#include <pcicfg.h> + +#define PCI_CFG_RETRY 10 + +#define OS_HANDLE_MAGIC 0x1234abcd +#define BCM_MEM_FILENAME_LEN 24 + +#ifdef DHD_USE_STATIC_BUF +#define MAX_STATIC_BUF_NUM 16 +#define STATIC_BUF_SIZE (PAGE_SIZE*2) +#define STATIC_BUF_TOTAL_LEN (MAX_STATIC_BUF_NUM*STATIC_BUF_SIZE) +typedef struct bcm_static_buf { + struct semaphore static_sem; + unsigned char *buf_ptr; + unsigned char buf_use[MAX_STATIC_BUF_NUM]; +} bcm_static_buf_t; + +static bcm_static_buf_t *bcm_static_buf = 0; + +#define MAX_STATIC_PKT_NUM 8 +typedef struct bcm_static_pkt { + struct sk_buff *skb_4k[MAX_STATIC_PKT_NUM]; + struct sk_buff *skb_8k[MAX_STATIC_PKT_NUM]; + struct semaphore osl_pkt_sem; + unsigned char pkt_use[MAX_STATIC_PKT_NUM*2]; +} bcm_static_pkt_t; +static bcm_static_pkt_t *bcm_static_skb = 0; + +#endif +typedef struct bcm_mem_link { + struct bcm_mem_link *prev; + struct bcm_mem_link *next; + uint size; + int line; + char file[BCM_MEM_FILENAME_LEN]; +} bcm_mem_link_t; + +struct osl_info { + osl_pubinfo_t pub; + uint magic; + void *pdev; + uint malloced; + uint failed; + uint bustype; + bcm_mem_link_t *dbgmem_list; +}; + +static int16 linuxbcmerrormap[] = +{ 0, + -EINVAL, + -EINVAL, + -EINVAL, + -EINVAL, + -EINVAL, + -EINVAL, + -EINVAL, + -EINVAL, + -EINVAL, + -EINVAL, + -EINVAL, + -EINVAL, + -EINVAL, + -E2BIG, + -E2BIG, + -EBUSY, + -EINVAL, + -EINVAL, + -EINVAL, + -EINVAL, + -EFAULT, + -ENOMEM, + -EOPNOTSUPP, + -EMSGSIZE, + -EINVAL, + -EPERM, + -ENOMEM, + -EINVAL, + -ERANGE, + -EINVAL, + -EINVAL, + -EINVAL, + -EINVAL, + -EINVAL, + -EIO, + -ENODEV, + -EINVAL, + -EIO, + -EIO, + -EINVAL, + -EINVAL, + + + +#if BCME_LAST != -41 +#error "You need to add a OS error translation in the linuxbcmerrormap \ + for new error code defined in bcmutils.h" +#endif +}; + + +int +osl_error(int bcmerror) +{ + if (bcmerror > 0) + bcmerror = 0; + else if (bcmerror < BCME_LAST) + bcmerror = BCME_ERROR; + + + return linuxbcmerrormap[-bcmerror]; +} + +void * dhd_os_prealloc(int section, unsigned long size); +osl_t * +osl_attach(void *pdev, uint bustype, bool pkttag) +{ + osl_t *osh; + gfp_t flags; + + flags = (in_atomic()) ? GFP_ATOMIC : GFP_KERNEL; + osh = kmalloc(sizeof(osl_t), flags); + ASSERT(osh); + + bzero(osh, sizeof(osl_t)); + + + ASSERT(ABS(BCME_LAST) == (ARRAYSIZE(linuxbcmerrormap) - 1)); + + osh->magic = OS_HANDLE_MAGIC; + osh->malloced = 0; + osh->failed = 0; + osh->dbgmem_list = NULL; + osh->pdev = pdev; + osh->pub.pkttag = pkttag; + osh->bustype = bustype; + + 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: + osh->pub.mmbus = FALSE; + break; + default: + ASSERT(FALSE); + break; + } + +#ifdef DHD_USE_STATIC_BUF + + + if (!bcm_static_buf) { + if (!(bcm_static_buf = (bcm_static_buf_t *)dhd_os_prealloc(3, STATIC_BUF_SIZE+ + STATIC_BUF_TOTAL_LEN))) { + printk("can not alloc static buf!\n"); + } + else { + /* printk("alloc static buf at %x!\n", (unsigned int)bcm_static_buf); */ + } + + init_MUTEX(&bcm_static_buf->static_sem); + + + bcm_static_buf->buf_ptr = (unsigned char *)bcm_static_buf + STATIC_BUF_SIZE; + + } + + if (!bcm_static_skb) + { + int i; + void *skb_buff_ptr = 0; + bcm_static_skb = (bcm_static_pkt_t *)((char *)bcm_static_buf + 2048); + skb_buff_ptr = dhd_os_prealloc(4, 0); + + bcopy(skb_buff_ptr, bcm_static_skb, sizeof(struct sk_buff *)*16); + for (i = 0; i < MAX_STATIC_PKT_NUM*2; i++) + bcm_static_skb->pkt_use[i] = 0; + + init_MUTEX(&bcm_static_skb->osl_pkt_sem); + } +#endif + return osh; +} + +void +osl_detach(osl_t *osh) +{ + if (osh == NULL) + return; + +#ifdef DHD_USE_STATIC_BUF + if (bcm_static_buf) { + bcm_static_buf = 0; + } + if (bcm_static_skb) { + bcm_static_skb = 0; + } +#endif + ASSERT(osh->magic == OS_HANDLE_MAGIC); + kfree(osh); +} + + +void* +osl_pktget(osl_t *osh, uint len) +{ + struct sk_buff *skb; + + if ((skb = dev_alloc_skb(len))) { + skb_put(skb, len); + skb->priority = 0; + + + osh->pub.pktalloced++; + } + + return ((void*) skb); +} + + +void +osl_pktfree(osl_t *osh, void *p, bool send) +{ + struct sk_buff *skb, *nskb; + + skb = (struct sk_buff*) p; + + if (send && osh->pub.tx_fn) + osh->pub.tx_fn(osh->pub.tx_ctx, p, 0); + + + while (skb) { + nskb = skb->next; + skb->next = NULL; + + + if (skb->destructor) { + + dev_kfree_skb_any(skb); + } else { + + dev_kfree_skb(skb); + } + + osh->pub.pktalloced--; + + skb = nskb; + } +} + +#ifdef DHD_USE_STATIC_BUF +void* +osl_pktget_static(osl_t *osh, uint len) +{ + int i = 0; + struct sk_buff *skb; + + + if (len > (PAGE_SIZE*2)) + { + printk("Do we really need this big skb??\n"); + return osl_pktget(osh, len); + } + + + down(&bcm_static_skb->osl_pkt_sem); + if (len <= PAGE_SIZE) + { + + for (i = 0; i < MAX_STATIC_PKT_NUM; i++) + { + if (bcm_static_skb->pkt_use[i] == 0) + break; + } + + if (i != MAX_STATIC_PKT_NUM) + { + bcm_static_skb->pkt_use[i] = 1; + up(&bcm_static_skb->osl_pkt_sem); + + skb = bcm_static_skb->skb_4k[i]; + skb->tail = skb->data + len; + skb->len = len; + + return skb; + } + } + + + for (i = 0; i < MAX_STATIC_PKT_NUM; i++) + { + if (bcm_static_skb->pkt_use[i+MAX_STATIC_PKT_NUM] == 0) + break; + } + + if (i != MAX_STATIC_PKT_NUM) + { + bcm_static_skb->pkt_use[i+MAX_STATIC_PKT_NUM] = 1; + up(&bcm_static_skb->osl_pkt_sem); + skb = bcm_static_skb->skb_8k[i]; + skb->tail = skb->data + len; + skb->len = len; + + return skb; + } + + + + up(&bcm_static_skb->osl_pkt_sem); + printk("all static pkt in use!\n"); + return osl_pktget(osh, len); +} + + +void +osl_pktfree_static(osl_t *osh, void *p, bool send) +{ + int i; + + for (i = 0; i < MAX_STATIC_PKT_NUM*2; i++) + { + if (p == bcm_static_skb->skb_4k[i]) + { + down(&bcm_static_skb->osl_pkt_sem); + bcm_static_skb->pkt_use[i] = 0; + up(&bcm_static_skb->osl_pkt_sem); + + + return; + } + } + return osl_pktfree(osh, p, send); +} +#endif +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))); + + + 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))); + + + 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--); + +} + + +uint +osl_pci_bus(osl_t *osh) +{ + ASSERT(osh && (osh->magic == OS_HANDLE_MAGIC) && osh->pdev); + + return ((struct pci_dev *)osh->pdev)->bus->number; +} + + +uint +osl_pci_slot(osl_t *osh) +{ + ASSERT(osh && (osh->magic == OS_HANDLE_MAGIC) && osh->pdev); + + return PCI_SLOT(((struct pci_dev *)osh->pdev)->devfn); +} + +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; + + if (osh) + ASSERT(osh->magic == OS_HANDLE_MAGIC); + +#ifdef 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 < MAX_STATIC_BUF_NUM; i++) + { + if (bcm_static_buf->buf_use[i] == 0) + break; + } + + if (i == MAX_STATIC_BUF_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) + osh->malloced += size; + + return ((void *)(bcm_static_buf->buf_ptr+STATIC_BUF_SIZE*i)); + } + } +original: +#endif + flags = (in_atomic()) ? GFP_ATOMIC : GFP_KERNEL; + if ((addr = kmalloc(size, flags)) == NULL) { + if (osh) + osh->failed++; + return (NULL); + } + if (osh) + osh->malloced += size; + + return (addr); +} + +void +osl_mfree(osl_t *osh, void *addr, uint size) +{ +#ifdef 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) { + ASSERT(osh->magic == OS_HANDLE_MAGIC); + osh->malloced -= size; + } + return; + } + } +#endif + if (osh) { + ASSERT(osh->magic == OS_HANDLE_MAGIC); + osh->malloced -= size; + } + kfree(addr); +} + +uint +osl_malloced(osl_t *osh) +{ + ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC))); + return (osh->malloced); +} + +uint +osl_malloc_failed(osl_t *osh) +{ + ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC))); + return (osh->failed); +} + +void* +osl_dma_alloc_consistent(osl_t *osh, uint size, ulong *pap) +{ + ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC))); + + return (pci_alloc_consistent(osh->pdev, size, (dma_addr_t*)pap)); +} + +void +osl_dma_free_consistent(osl_t *osh, void *va, uint size, ulong pa) +{ + ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC))); + + pci_free_consistent(osh->pdev, size, va, (dma_addr_t)pa); +} + +uint +osl_dma_map(osl_t *osh, void *va, uint size, int direction) +{ + 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 +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); +} + + +void +osl_delay(uint usec) +{ + uint d; + + while (usec > 0) { + d = MIN(usec, 1000); + udelay(d); + usec -= d; + } +} + + + +void * +osl_pktdup(osl_t *osh, void *skb) +{ + void * p; + gfp_t flags; + + flags = (in_atomic()) ? GFP_ATOMIC : GFP_KERNEL; + if ((p = skb_clone((struct sk_buff*)skb, flags)) == NULL) + return NULL; + + + if (osh->pub.pkttag) + bzero((void*)((struct sk_buff *)p)->cb, OSL_PKTTAG_SZ); + + + osh->pub.pktalloced++; + return (p); +} |