1 /* $NetBSD: twavar.h,v 1.8 2008/05/07 17:47:20 joerg Exp $ */ 2 /* $wasabi: twavar.h,v 1.12 2006/05/01 15:16:59 simonb Exp $ */ 3 4 /*- 5 * Copyright (c) 2003-04 3ware, Inc. 6 * Copyright (c) 2000 Michael Smith 7 * Copyright (c) 2000 BSDi 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $FreeBSD: src/sys/dev/twa/twa.h,v 1.4 2004/06/16 09:47:00 phk Exp $ 32 */ 33 34 /* 35 * 3ware driver for 9000 series storage controllers. 36 * 37 * Author: Vinod Kashyap 38 */ 39 #ifndef _PCI_TWAVAR_H_ 40 #define _PCI_TWAVAR_H_ 41 42 #include "locators.h" 43 44 struct twa_callbacks { 45 void (*tcb_openings)(struct device *, int); 46 }; 47 48 struct twa_drive { 49 uint32_t td_id; 50 uint64_t td_size; 51 int td_openings; 52 struct device *td_dev; 53 const struct twa_callbacks *td_callbacks; 54 }; 55 56 /* Per-controller structure. */ 57 struct twa_softc { 58 struct device twa_dv; 59 bus_space_tag_t twa_bus_iot; /* bus space tag */ 60 bus_space_handle_t twa_bus_ioh; /* bus space handle */ 61 bus_dma_tag_t twa_dma_tag; /* data buffer DMA tag */ 62 bus_dmamap_t twa_cmd_map; /* DMA map for the array of cmd pkts */ 63 void *twa_ih; /* interrupt handle cookie */ 64 void * twa_cmds; 65 bus_addr_t twa_cmd_pkt_phys;/* phys addr of first of array of cmd pkts */ 66 67 pci_chipset_tag_t pc; 68 pcitag_t tag; 69 /* Request queues and arrays. */ 70 TAILQ_HEAD(, twa_request) twa_free; /* free request packets */ 71 TAILQ_HEAD(, twa_request) twa_busy; /* requests busy in the controller */ 72 TAILQ_HEAD(, twa_request) twa_pending; /* internal requests pending */ 73 74 struct twa_request *twa_lookup[TWA_Q_LENGTH];/* requests indexed by request_id */ 75 76 struct twa_request *twa_req_buf; 77 struct twa_command_packet *twa_cmd_pkt_buf; 78 79 struct twa_drive *sc_units; 80 /* AEN handler fields. */ 81 struct tw_cl_event_packet *twa_aen_queue[TWA_Q_LENGTH];/* circular queue of AENs from firmware */ 82 uint16_t working_srl; /* driver & firmware negotiated srl */ 83 uint16_t working_branch; /* branch # of the firmware that the driver is compatible with */ 84 uint16_t working_build; /* build # of the firmware that the driver is compatible with */ 85 uint32_t twa_operating_mode; /* base mode/current mode */ 86 uint32_t twa_aen_head; /* AEN queue head */ 87 uint32_t twa_aen_tail; /* AEN queue tail */ 88 uint32_t twa_current_sequence_id;/* index of the last event + 1 */ 89 uint32_t twa_aen_queue_overflow; /* indicates if unretrieved events were overwritten */ 90 uint32_t twa_aen_queue_wrapped; /* indicates if AEN queue ever wrapped */ 91 /* Controller state. */ 92 uint32_t twa_state; 93 uint32_t twa_sc_flags; 94 95 struct _twa_ioctl_lock{ 96 uint32_t lock; /* lock state */ 97 uint32_t timeout; /* time at which the lock 98 * will become available, 99 * even if not released 100 */ 101 } twa_ioctl_lock; /* lock for use by user 102 * applications, 103 * for synchronization between 104 * ioctl calls 105 */ 106 int sc_nunits; 107 108 struct twa_request *sc_twa_request; 109 uint32_t sc_product_id; 110 }; 111 112 113 114 /* Possible values of tr->tr_status. */ 115 #define TWA_CMD_SETUP 0x0 /* being assembled */ 116 #define TWA_CMD_BUSY 0x1 /* submitted to controller */ 117 #define TWA_CMD_PENDING 0x2 /* in pending queue */ 118 #define TWA_CMD_COMPLETE 0x3 /* completed by controller */ 119 120 /* Possible values of tr->tr_flags. */ 121 #define TWA_CMD_DATA_IN (1 << 0) 122 #define TWA_CMD_DATA_OUT (1 << 1) 123 #define TWA_CMD_DATA_COPY_NEEDED (1 << 2) 124 #define TWA_CMD_SLEEP_ON_REQUEST (1 << 3) 125 #define TWA_CMD_IN_PROGRESS (1 << 4) 126 #define TWA_CMD_AEN (1 << 5) 127 #define TWA_CMD_AEN_BUSY (1 << 6) 128 129 /* Possible values of tr->tr_cmd_pkt_type. */ 130 #define TWA_CMD_PKT_TYPE_7K (1<<0) 131 #define TWA_CMD_PKT_TYPE_9K (1<<1) 132 #define TWA_CMD_PKT_TYPE_INTERNAL (1<<2) 133 #define TWA_CMD_PKT_TYPE_IOCTL (1<<3) 134 #define TWA_CMD_PKT_TYPE_EXTERNAL (1<<4) 135 136 /* Possible values of sc->twa_state. */ 137 #define TWA_STATE_INTR_ENABLED (1<<0) /* interrupts have been enabled */ 138 #define TWA_STATE_SHUTDOWN (1<<1) /* controller is shut down */ 139 #define TWA_STATE_OPEN (1<<2) /* control device is open */ 140 #define TWA_STATE_SIMQ_FROZEN (1<<3) /* simq frozen */ 141 #define TWA_STATE_REQUEST_WAIT (1<<4) 142 #define TWA_STATE_IN_RESET (1<<5) /* controller being reset */ 143 144 /* Possible values of sc->twa_ioctl_lock.lock. */ 145 #define TWA_LOCK_FREE 0x0 /* lock is free */ 146 #define TWA_LOCK_HELD 0x1 /* lock is held */ 147 148 /* Driver's request packet. */ 149 struct twa_request { 150 struct twa_command_packet *tr_command; 151 /* ptr to cmd pkt submitted to controller */ 152 uint32_t tr_request_id; 153 /* request id for tracking with firmware */ 154 void *tr_data; 155 /* ptr to data being passed to firmware */ 156 size_t tr_length; 157 /* length of buffer being passed to firmware */ 158 void *tr_real_data; 159 /* ptr to, and length of data passed */ 160 size_t tr_real_length; 161 /* to us from above, in case a buffer copy 162 * was done due to non-compliance to 163 * alignment requirements 164 */ 165 TAILQ_ENTRY(twa_request) tr_link; 166 /* to link this request in a list */ 167 struct twa_softc *tr_sc; 168 /* controller that owns us */ 169 uint32_t tr_status; 170 /* command status */ 171 uint32_t tr_flags; 172 /* request flags */ 173 uint32_t tr_error; 174 /* error encountered before request submission */ 175 uint32_t tr_cmd_pkt_type; 176 /* request specific data to use during callback */ 177 void (*tr_callback)(struct twa_request *tr); 178 /* callback handler */ 179 bus_addr_t tr_cmd_phys; 180 /* physical address of command in controller space */ 181 bus_dmamap_t tr_dma_map; 182 /* DMA map for data */ 183 struct buf *bp; 184 185 struct ld_twa_softc *tr_ld_sc; 186 }; 187 188 static __inline size_t twa_get_maxsegs(void) { 189 size_t max_segs = ((MAXPHYS + PAGE_SIZE - 1) / PAGE_SIZE) + 1; 190 #ifdef TWA_SG_SIZE 191 if (TWA_MAX_SG_ELEMENTS < max_segs) 192 max_segs = TWA_MAX_SG_ELEMENTS; 193 #endif 194 return max_segs; 195 } 196 197 static __inline size_t twa_get_maxxfer(size_t maxsegs) { 198 return (maxsegs - 1) * PAGE_SIZE; 199 } 200 201 struct twa_attach_args { 202 int twaa_unit; 203 }; 204 205 #define twaacf_unit cf_loc[TWACF_UNIT] 206 207 struct twa_request *twa_get_request(struct twa_softc *, int); 208 struct twa_request *twa_get_request_wait(struct twa_softc *, int); 209 int twa_map_request(struct twa_request *); 210 void twa_register_callbacks(struct twa_softc *sc, int unit, 211 const struct twa_callbacks *); 212 void twa_request_wait_handler(struct twa_request *); 213 void twa_release_request(struct twa_request *); 214 215 /* Error/AEN message structure. */ 216 struct twa_message { 217 uint32_t code; 218 const char *message; 219 }; 220 221 #endif /* !_PCI_TWAVAR_H_ */ 222