1/*	$OpenBSD: if_rtwn.c,v 1.6 2015/08/28 00:03:53 deraadt Exp $	*/
2
3/*-
4 * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
5 * Copyright (c) 2015 Stefan Sperling <stsp@openbsd.org>
6 * Copyright (c) 2016 Andriy Voskoboinyk <avos@FreeBSD.org>
7 *
8 * Permission to use, copy, modify, and distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 */
20
21#include <sys/cdefs.h>
22__FBSDID("$FreeBSD$");
23
24#include "opt_wlan.h"
25
26#include <sys/param.h>
27#include <sys/lock.h>
28#include <sys/mutex.h>
29#include <sys/mbuf.h>
30#include <sys/kernel.h>
31#include <sys/socket.h>
32#include <sys/systm.h>
33#include <sys/malloc.h>
34#include <sys/queue.h>
35#include <sys/taskqueue.h>
36#include <sys/bus.h>
37#include <sys/endian.h>
38#include <sys/linker.h>
39
40#include <machine/bus.h>
41#include <machine/resource.h>
42#include <sys/rman.h>
43
44#include <net/if.h>
45#include <net/ethernet.h>
46#include <net/if_media.h>
47
48#include <net80211/ieee80211_var.h>
49#include <net80211/ieee80211_radiotap.h>
50
51#include <dev/rtwn/if_rtwnvar.h>
52#include <dev/rtwn/if_rtwn_debug.h>
53
54#include <dev/rtwn/pci/rtwn_pci_var.h>
55
56#include <dev/rtwn/rtl8192c/pci/r92ce.h>
57#include <dev/rtwn/rtl8192c/pci/r92ce_tx_desc.h>
58
59void
60r92ce_setup_tx_desc(struct rtwn_pci_softc *pc, void *desc,
61    uint32_t next_desc_addr)
62{
63	struct r92ce_tx_desc *txd = desc;
64
65	/* setup tx desc */
66	txd->nextdescaddr = htole32(next_desc_addr);
67}
68
69void
70r92ce_tx_postsetup(struct rtwn_pci_softc *pc, void *desc,
71    bus_dma_segment_t segs[])
72{
73	struct r92ce_tx_desc *txd = desc;
74
75	txd->txbufaddr = htole32(segs[0].ds_addr);
76	txd->txbufsize = txd->pktlen;
77	bus_space_barrier(pc->pc_st, pc->pc_sh, 0, pc->pc_mapsize,
78	    BUS_SPACE_BARRIER_WRITE);
79}
80
81void
82r92ce_copy_tx_desc(void *dest, const void *src)
83{
84	struct r92ce_tx_desc *txd = dest;
85	size_t len = sizeof(struct r92c_tx_desc) +
86	    sizeof(txd->txbufsize) + sizeof(txd->pad);
87
88	if (src != NULL)
89		memcpy(dest, src, len);
90	else
91		memset(dest, 0, len);
92}
93
94void
95r92ce_dump_tx_desc(struct rtwn_softc *sc, const void *desc)
96{
97#ifdef RTWN_DEBUG
98	const struct r92ce_tx_desc *txd = desc;
99
100	RTWN_DPRINTF(sc, RTWN_DEBUG_XMIT_DESC,
101	    "%s: len %d, off %d, flags0 %02X, dw: 1 %08X, 2 %08X, 3 %04X "
102	    "(seq %04X), 4 %08X, 5 %08X, 6 %08X, size %04X, pad %04X, "
103	    "addr: %08X (64: %08X), next: %08X (64: %08X), "
104	    "rsvd: %08X %08X %08X %08X\n",
105	    __func__, le16toh(txd->pktlen), txd->offset, txd->flags0,
106	    le32toh(txd->txdw1), le32toh(txd->txdw2), le16toh(txd->txdw3),
107	    le16toh(txd->txdseq), le32toh(txd->txdw4), le32toh(txd->txdw5),
108	    le32toh(txd->txdw6), le16toh(txd->txbufsize), le16toh(txd->pad),
109	    le32toh(txd->txbufaddr), le32toh(txd->txbufaddr64),
110	    le32toh(txd->nextdescaddr), le32toh(txd->nextdescaddr64),
111	    le32toh(txd->reserved[0]), le32toh(txd->reserved[1]),
112	    le32toh(txd->reserved[2]), le32toh(txd->reserved[3]));
113#endif
114}
115