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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
commit03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch)
treefa581f6dc1c0596391690d1f67eceef3af8246dc /drivers/net/wireless/brcm80211/brcmsmac/dma.h
parentd4e493caf788ef44982e131ff9c786546904d934 (diff)
Linux-libre 4.5-gnu
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmsmac/dma.h')
-rw-r--r--drivers/net/wireless/brcm80211/brcmsmac/dma.h125
1 files changed, 0 insertions, 125 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmsmac/dma.h b/drivers/net/wireless/brcm80211/brcmsmac/dma.h
deleted file mode 100644
index ff5b80b09..000000000
--- a/drivers/net/wireless/brcm80211/brcmsmac/dma.h
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * Copyright (c) 2010 Broadcom Corporation
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#ifndef _BRCM_DMA_H_
-#define _BRCM_DMA_H_
-
-#include <linux/delay.h>
-#include <linux/skbuff.h>
-#include "types.h" /* forward structure declarations */
-
-/* map/unmap direction */
-#define DMA_TX 1 /* TX direction for DMA */
-#define DMA_RX 2 /* RX direction for DMA */
-
-/* DMA structure:
- * support two DMA engines: 32 bits address or 64 bit addressing
- * basic DMA register set is per channel(transmit or receive)
- * a pair of channels is defined for convenience
- */
-
-/* 32 bits addressing */
-
-struct dma32diag { /* diag access */
- u32 fifoaddr; /* diag address */
- u32 fifodatalow; /* low 32bits of data */
- u32 fifodatahigh; /* high 32bits of data */
- u32 pad; /* reserved */
-};
-
-/* 64 bits addressing */
-
-/* dma registers per channel(xmt or rcv) */
-struct dma64regs {
- u32 control; /* enable, et al */
- u32 ptr; /* last descriptor posted to chip */
- u32 addrlow; /* desc ring base address low 32-bits (8K aligned) */
- u32 addrhigh; /* desc ring base address bits 63:32 (8K aligned) */
- u32 status0; /* current descriptor, xmt state */
- u32 status1; /* active descriptor, xmt error */
-};
-
-/* range param for dma_getnexttxp() and dma_txreclaim */
-enum txd_range {
- DMA_RANGE_ALL = 1,
- DMA_RANGE_TRANSMITTED,
- DMA_RANGE_TRANSFERED
-};
-
-/*
- * Exported data structure (read-only)
- */
-/* export structure */
-struct dma_pub {
- uint txavail; /* # free tx descriptors */
- uint dmactrlflags; /* dma control flags */
-
- /* rx error counters */
- uint rxgiants; /* rx giant frames */
- uint rxnobuf; /* rx out of dma descriptors */
- /* tx error counters */
- uint txnobuf; /* tx out of dma descriptors */
-};
-
-extern struct dma_pub *dma_attach(char *name, struct brcms_c_info *wlc,
- uint txregbase, uint rxregbase,
- uint ntxd, uint nrxd,
- uint rxbufsize, int rxextheadroom,
- uint nrxpost, uint rxoffset);
-
-void dma_rxinit(struct dma_pub *pub);
-int dma_rx(struct dma_pub *pub, struct sk_buff_head *skb_list);
-bool dma_rxfill(struct dma_pub *pub);
-bool dma_rxreset(struct dma_pub *pub);
-bool dma_txreset(struct dma_pub *pub);
-void dma_txinit(struct dma_pub *pub);
-int dma_txfast(struct brcms_c_info *wlc, struct dma_pub *pub,
- struct sk_buff *p0);
-void dma_txflush(struct dma_pub *pub);
-int dma_txpending(struct dma_pub *pub);
-void dma_kick_tx(struct dma_pub *pub);
-void dma_txsuspend(struct dma_pub *pub);
-bool dma_txsuspended(struct dma_pub *pub);
-void dma_txresume(struct dma_pub *pub);
-void dma_txreclaim(struct dma_pub *pub, enum txd_range range);
-void dma_rxreclaim(struct dma_pub *pub);
-void dma_detach(struct dma_pub *pub);
-unsigned long dma_getvar(struct dma_pub *pub, const char *name);
-struct sk_buff *dma_getnexttxp(struct dma_pub *pub, enum txd_range range);
-void dma_counterreset(struct dma_pub *pub);
-
-void dma_walk_packets(struct dma_pub *dmah, void (*callback_fnc)
- (void *pkt, void *arg_a), void *arg_a);
-
-/*
- * DMA(Bug) on bcm47xx chips seems to declare that the packet is ready, but
- * the packet length is not updated yet (by DMA) on the expected time.
- * Workaround is to hold processor till DMA updates the length, and stay off
- * the bus to allow DMA update the length in buffer
- */
-static inline void dma_spin_for_len(uint len, struct sk_buff *head)
-{
-#if defined(CONFIG_BCM47XX)
- if (!len) {
- while (!(len = *(u16 *) KSEG1ADDR(head->data)))
- udelay(1);
-
- *(u16 *) (head->data) = cpu_to_le16((u16) len);
- }
-#endif /* defined(CONFIG_BCM47XX) */
-}
-
-#endif /* _BRCM_DMA_H_ */