--- /dev/null
+/*
+ * 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 1.125.12.3.8.6 2009/12/09 01:29:03 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);
+}
projects / bootloader-ap.git / blobdiff