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_reg.h> 58 59 int 60 r92ce_get_intr_status(struct rtwn_pci_softc *pc, int *rings) 61 { 62 struct rtwn_softc *sc = &pc->pc_sc; 63 uint32_t status; 64 int ret; 65 66 *rings = 0; 67 status = rtwn_read_4(sc, R92C_HISR); 68 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: HISR %08X, HISRE %04X\n", 69 __func__, status, rtwn_read_2(sc, R92C_HISRE)); 70 if (status == 0 || status == 0xffffffff) 71 return (0); 72 73 /* Disable interrupts. */ 74 rtwn_write_4(sc, R92C_HIMR, 0); 75 76 /* Ack interrupts. */ 77 rtwn_write_4(sc, R92C_HISR, status); 78 79 if (status & R92C_IMR_BDOK) 80 *rings |= (1 << RTWN_PCI_BEACON_QUEUE); 81 if (status & R92C_IMR_HIGHDOK) 82 *rings |= (1 << RTWN_PCI_HIGH_QUEUE); 83 if (status & R92C_IMR_MGNTDOK) 84 *rings |= (1 << RTWN_PCI_MGNT_QUEUE); 85 if (status & R92C_IMR_BKDOK) 86 *rings |= (1 << RTWN_PCI_BK_QUEUE); 87 if (status & R92C_IMR_BEDOK) 88 *rings |= (1 << RTWN_PCI_BE_QUEUE); 89 if (status & R92C_IMR_VIDOK) 90 *rings |= (1 << RTWN_PCI_VI_QUEUE); 91 if (status & R92C_IMR_VODOK) 92 *rings |= (1 << RTWN_PCI_VO_QUEUE); 93 94 ret = 0; 95 if (status & R92C_IMR_RXFOVW) 96 ret |= RTWN_PCI_INTR_RX_OVERFLOW; 97 if (status & R92C_IMR_RDU) 98 ret |= RTWN_PCI_INTR_RX_DESC_UNAVAIL; 99 if (status & R92C_IMR_ROK) 100 ret |= RTWN_PCI_INTR_RX_DONE; 101 if (status & R92C_IMR_TXFOVW) 102 ret |= RTWN_PCI_INTR_TX_OVERFLOW; 103 if (status & R92C_IMR_PSTIMEOUT) 104 ret |= RTWN_PCI_INTR_PS_TIMEOUT; 105 106 return (ret); 107 } 108 109 #define R92C_INT_ENABLE (R92C_IMR_ROK | R92C_IMR_VODOK | R92C_IMR_VIDOK | \ 110 R92C_IMR_BEDOK | R92C_IMR_BKDOK | R92C_IMR_MGNTDOK | \ 111 R92C_IMR_HIGHDOK | R92C_IMR_BDOK | R92C_IMR_RDU | \ 112 R92C_IMR_RXFOVW) 113 void 114 r92ce_enable_intr(struct rtwn_pci_softc *pc) 115 { 116 struct rtwn_softc *sc = &pc->pc_sc; 117 118 /* Enable interrupts. */ 119 rtwn_write_4(sc, R92C_HIMR, R92C_INT_ENABLE); 120 } 121 122 void 123 r92ce_start_xfers(struct rtwn_softc *sc) 124 { 125 /* Clear pending interrupts. */ 126 rtwn_write_4(sc, R92C_HISR, 0xffffffff); 127 128 /* Enable interrupts. */ 129 rtwn_write_4(sc, R92C_HIMR, R92C_INT_ENABLE); 130 } 131 #undef R92C_INT_ENABLE 132