1 /*-
2 * Copyright (c) 2017 Farhan Khan <khanzf@gmail.com>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include <sys/cdefs.h>
18 #include "opt_wlan.h"
19
20 #include <sys/param.h>
21 #include <sys/lock.h>
22 #include <sys/mutex.h>
23 #include <sys/mbuf.h>
24 #include <sys/kernel.h>
25 #include <sys/socket.h>
26 #include <sys/systm.h>
27 #include <sys/malloc.h>
28 #include <sys/queue.h>
29 #include <sys/taskqueue.h>
30 #include <sys/bus.h>
31 #include <sys/endian.h>
32 #include <sys/linker.h>
33
34 #include <machine/bus.h>
35 #include <machine/resource.h>
36 #include <sys/rman.h>
37
38 #include <net/if.h>
39 #include <net/ethernet.h>
40 #include <net/if_media.h>
41
42 #include <net80211/ieee80211_var.h>
43 #include <net80211/ieee80211_radiotap.h>
44
45 #include <dev/rtwn/if_rtwnvar.h>
46 #include <dev/rtwn/if_rtwn_debug.h>
47
48 #include <dev/rtwn/pci/rtwn_pci_var.h>
49
50 #include <dev/rtwn/rtl8188e/pci/r88ee.h>
51 #include <dev/rtwn/rtl8188e/pci/r88ee_reg.h>
52
53 int
r88ee_get_intr_status(struct rtwn_pci_softc * pc,int * rings)54 r88ee_get_intr_status(struct rtwn_pci_softc *pc, int *rings)
55 {
56 struct rtwn_softc *sc = &pc->pc_sc;
57 uint32_t status, status_ex;
58 int ret;
59
60 *rings = 0;
61 status = rtwn_read_4(sc, R88E_HISR);
62 status_ex = rtwn_read_4(sc, R88E_HISRE);
63 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: HISR %08X, HISRE %08X\n",
64 __func__, status, status_ex);
65 if ((status == 0 || status == 0xffffffff) &&
66 (status_ex == 0 || status_ex == 0xffffffff))
67 return (0);
68
69 /* Disable interrupts */
70 rtwn_write_4(sc, R88E_HIMR, 0);
71 rtwn_write_4(sc, R88E_HIMRE, 0);
72
73 /* Ack interrupts */
74 rtwn_write_4(sc, R88E_HISR, status);
75 rtwn_write_4(sc, R88E_HISRE, status_ex);
76
77 if (status & R88E_HIMR_HIGHDOK)
78 *rings |= (1 << RTWN_PCI_HIGH_QUEUE);
79 if (status & R88E_HIMR_MGNTDOK)
80 *rings |= (1 << RTWN_PCI_MGNT_QUEUE);
81 if (status & R88E_HIMR_BKDOK)
82 *rings |= (1 << RTWN_PCI_BK_QUEUE);
83 if (status & R88E_HIMR_BEDOK)
84 *rings |= (1 << RTWN_PCI_BE_QUEUE);
85 if (status & R88E_HIMR_VIDOK)
86 *rings |= (1 << RTWN_PCI_VI_QUEUE);
87 if (status & R88E_HIMR_VODOK)
88 *rings |= (1 << RTWN_PCI_VO_QUEUE);
89
90 ret = 0;
91 if (status_ex & R88E_HIMRE_RXERR)
92 ret |= RTWN_PCI_INTR_RX_ERROR;
93 if (status_ex & R88E_HIMRE_RXFOVW)
94 ret |= RTWN_PCI_INTR_RX_OVERFLOW;
95 if (status & R88E_HIMR_RDU)
96 ret |= RTWN_PCI_INTR_RX_DESC_UNAVAIL;
97 if (status & R88E_HIMR_ROK)
98 ret |= RTWN_PCI_INTR_RX_DONE;
99 if (status_ex & R88E_HIMRE_TXERR)
100 ret |= RTWN_PCI_INTR_TX_ERROR;
101 if (status_ex & R88E_HIMRE_TXFOVW)
102 ret |= RTWN_PCI_INTR_TX_OVERFLOW;
103 if (status & R88E_HIMR_TXRPT)
104 ret |= RTWN_PCI_INTR_TX_REPORT;
105 if (status & R88E_HIMR_PSTIMEOUT)
106 ret |= RTWN_PCI_INTR_PS_TIMEOUT;
107
108 return (ret);
109 }
110
111 #define R88E_INT_ENABLE (R88E_HIMR_ROK | R88E_HIMR_RDU | R88E_HIMR_VODOK | \
112 R88E_HIMR_VIDOK | R88E_HIMR_BEDOK | \
113 R88E_HIMR_BKDOK | R88E_HIMR_MGNTDOK | \
114 R88E_HIMR_HIGHDOK | R88E_HIMR_TXRPT)
115
116 #define R88E_INT_ENABLE_EX (R88E_HIMRE_RXFOVW | R88E_HIMRE_RXERR)
117
118 void
r88ee_enable_intr(struct rtwn_pci_softc * pc)119 r88ee_enable_intr(struct rtwn_pci_softc *pc)
120 {
121 struct rtwn_softc *sc = &pc->pc_sc;
122
123 /* Enable interrupts */
124 rtwn_write_4(sc, R88E_HIMR, R88E_INT_ENABLE);
125 rtwn_write_4(sc, R88E_HIMRE, R88E_INT_ENABLE_EX);
126 }
127
128 void
r88ee_start_xfers(struct rtwn_softc * sc)129 r88ee_start_xfers(struct rtwn_softc *sc)
130 {
131 /* Clear pending interrupts. */
132 rtwn_write_4(sc, R88E_HISR, 0xffffffff);
133 rtwn_write_4(sc, R88E_HISRE, 0xffffffff);
134
135 /* Enable interrupts. */
136 rtwn_write_4(sc, R88E_HIMR, R88E_INT_ENABLE);
137 rtwn_write_4(sc, R88E_HIMRE, R88E_INT_ENABLE_EX);
138 }
139
140 #undef R88E_INT_ENABLE
141 #undef R88E_INT_ENABLE_EX
142