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 #include "opt_wlan.h"
23
24 #include <sys/param.h>
25 #include <sys/lock.h>
26 #include <sys/mutex.h>
27 #include <sys/mbuf.h>
28 #include <sys/kernel.h>
29 #include <sys/socket.h>
30 #include <sys/systm.h>
31 #include <sys/malloc.h>
32 #include <sys/queue.h>
33 #include <sys/taskqueue.h>
34 #include <sys/bus.h>
35 #include <sys/endian.h>
36 #include <sys/linker.h>
37
38 #include <machine/bus.h>
39 #include <machine/resource.h>
40 #include <sys/rman.h>
41
42 #include <net/if.h>
43 #include <net/ethernet.h>
44 #include <net/if_media.h>
45
46 #include <net80211/ieee80211_var.h>
47 #include <net80211/ieee80211_radiotap.h>
48
49 #include <dev/rtwn/if_rtwnvar.h>
50 #include <dev/rtwn/if_rtwn_debug.h>
51
52 #include <dev/rtwn/pci/rtwn_pci_var.h>
53
54 #include <dev/rtwn/rtl8192c/pci/r92ce.h>
55 #include <dev/rtwn/rtl8192c/pci/r92ce_reg.h>
56
57 int
r92ce_get_intr_status(struct rtwn_pci_softc * pc,int * rings)58 r92ce_get_intr_status(struct rtwn_pci_softc *pc, int *rings)
59 {
60 struct rtwn_softc *sc = &pc->pc_sc;
61 uint32_t status;
62 int ret;
63
64 *rings = 0;
65 status = rtwn_read_4(sc, R92C_HISR);
66 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: HISR %08X, HISRE %04X\n",
67 __func__, status, rtwn_read_2(sc, R92C_HISRE));
68 if (status == 0 || status == 0xffffffff)
69 return (0);
70
71 /* Disable interrupts. */
72 rtwn_write_4(sc, R92C_HIMR, 0);
73
74 /* Ack interrupts. */
75 rtwn_write_4(sc, R92C_HISR, status);
76
77 if (status & R92C_IMR_BDOK)
78 *rings |= (1 << RTWN_PCI_BEACON_QUEUE);
79 if (status & R92C_IMR_HIGHDOK)
80 *rings |= (1 << RTWN_PCI_HIGH_QUEUE);
81 if (status & R92C_IMR_MGNTDOK)
82 *rings |= (1 << RTWN_PCI_MGNT_QUEUE);
83 if (status & R92C_IMR_BKDOK)
84 *rings |= (1 << RTWN_PCI_BK_QUEUE);
85 if (status & R92C_IMR_BEDOK)
86 *rings |= (1 << RTWN_PCI_BE_QUEUE);
87 if (status & R92C_IMR_VIDOK)
88 *rings |= (1 << RTWN_PCI_VI_QUEUE);
89 if (status & R92C_IMR_VODOK)
90 *rings |= (1 << RTWN_PCI_VO_QUEUE);
91
92 ret = 0;
93 if (status & R92C_IMR_RXFOVW)
94 ret |= RTWN_PCI_INTR_RX_OVERFLOW;
95 if (status & R92C_IMR_RDU)
96 ret |= RTWN_PCI_INTR_RX_DESC_UNAVAIL;
97 if (status & R92C_IMR_ROK)
98 ret |= RTWN_PCI_INTR_RX_DONE;
99 if (status & R92C_IMR_TXFOVW)
100 ret |= RTWN_PCI_INTR_TX_OVERFLOW;
101 if (status & R92C_IMR_PSTIMEOUT)
102 ret |= RTWN_PCI_INTR_PS_TIMEOUT;
103
104 return (ret);
105 }
106
107 #define R92C_INT_ENABLE (R92C_IMR_ROK | R92C_IMR_VODOK | R92C_IMR_VIDOK | \
108 R92C_IMR_BEDOK | R92C_IMR_BKDOK | R92C_IMR_MGNTDOK | \
109 R92C_IMR_HIGHDOK | R92C_IMR_BDOK | R92C_IMR_RDU | \
110 R92C_IMR_RXFOVW)
111 void
r92ce_enable_intr(struct rtwn_pci_softc * pc)112 r92ce_enable_intr(struct rtwn_pci_softc *pc)
113 {
114 struct rtwn_softc *sc = &pc->pc_sc;
115
116 /* Enable interrupts. */
117 rtwn_write_4(sc, R92C_HIMR, R92C_INT_ENABLE);
118 }
119
120 void
r92ce_start_xfers(struct rtwn_softc * sc)121 r92ce_start_xfers(struct rtwn_softc *sc)
122 {
123 /* Clear pending interrupts. */
124 rtwn_write_4(sc, R92C_HISR, 0xffffffff);
125
126 /* Enable interrupts. */
127 rtwn_write_4(sc, R92C_HIMR, R92C_INT_ENABLE);
128 }
129 #undef R92C_INT_ENABLE
130