1 /*-
2 * FreeBSD platform specific driver option settings, data structures,
3 * function declarations and includes.
4 *
5 * Copyright (c) 1994-2001 Justin T. Gibbs.
6 * Copyright (c) 2001-2002 Adaptec Inc.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions, and the following disclaimer,
14 * without modification.
15 * 2. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * Alternatively, this software may be distributed under the terms of the
19 * GNU Public License ("GPL").
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
25 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic79xx_osm.h#23 $
34 *
35 * $FreeBSD: releng/8.4/sys/dev/aic7xxx/aic79xx_osm.h 218992 2011-02-24 10:23:22Z brucec $
36 */
37
38 #ifndef _AIC79XX_FREEBSD_H_
39 #define _AIC79XX_FREEBSD_H_
40
41 #include <opt_aic79xx.h> /* for config options */
42
43 #include <sys/param.h>
44 #include <sys/systm.h>
45 #include <sys/bus.h> /* For device_t */
46 #if __FreeBSD_version >= 500000
47 #include <sys/endian.h>
48 #endif
49 #include <sys/eventhandler.h>
50 #include <sys/kernel.h>
51 #include <sys/malloc.h>
52 #include <sys/module.h>
53 #include <sys/queue.h>
54 #include <sys/sysctl.h>
55
56 #define AIC_PCI_CONFIG 1
57 #include <machine/bus.h>
58 #include <machine/endian.h>
59 #include <machine/resource.h>
60
61 #include <sys/rman.h>
62
63 #if __FreeBSD_version >= 500000
64 #include <dev/pci/pcireg.h>
65 #include <dev/pci/pcivar.h>
66 #else
67 #include <pci/pcireg.h>
68 #include <pci/pcivar.h>
69 #endif
70
71 #include <cam/cam.h>
72 #include <cam/cam_ccb.h>
73 #include <cam/cam_debug.h>
74 #include <cam/cam_sim.h>
75 #include <cam/cam_xpt_sim.h>
76
77 #include <cam/scsi/scsi_all.h>
78 #include <cam/scsi/scsi_message.h>
79 #include <cam/scsi/scsi_iu.h>
80
81 /****************************** Platform Macros *******************************/
82 #define SIM_IS_SCSIBUS_B(ahd, sim) \
83 (0)
84 #define SIM_CHANNEL(ahd, sim) \
85 ('A')
86 #define SIM_SCSI_ID(ahd, sim) \
87 (ahd->our_id)
88 #define SIM_PATH(ahd, sim) \
89 (ahd->platform_data->path)
90 #define BUILD_SCSIID(ahd, sim, target_id, our_id) \
91 ((((target_id) << TID_SHIFT) & TID) | (our_id))
92
93
94 #define SCB_GET_SIM(ahd, scb) \
95 ((ahd)->platform_data->sim)
96
97 #ifndef offsetof
98 #define offsetof(type, member) ((size_t)(&((type *)0)->member))
99 #endif
100
101 /************************ Tunable Driver Parameters **************************/
102 /*
103 * The number of dma segments supported. The sequencer can handle any number
104 * of physically contiguous S/G entrys. To reduce the driver's memory
105 * consumption, we limit the number supported to be sufficient to handle
106 * the largest mapping supported by the legacy kernel MAXPHYS setting of
107 * 128K. This can be increased once some testing is done. Assuming the
108 * transfer is as fragmented as possible and unaligned, this turns out to
109 * be the number of paged sized transfers in MAXPHYS plus an extra element
110 * to handle any unaligned residual. The sequencer fetches SG elements
111 * in cacheline sized chucks, so make the number per-transaction an even
112 * multiple of 16 which should align us on even the largest of cacheline
113 * boundaries.
114 */
115 #define AHD_MAXPHYS (128 * 1024)
116 #define AHD_NSEG (roundup(btoc(AHD_MAXPHYS) + 1, 16))
117
118 /* This driver supports target mode */
119 #ifdef NOT_YET
120 #define AHD_TARGET_MODE 1
121 #endif
122
123 /************************** Softc/SCB Platform Data ***************************/
124 struct ahd_platform_data {
125 /*
126 * Hooks into the XPT.
127 */
128 struct cam_sim *sim;
129 struct cam_path *path;
130
131 int regs_res_type[2];
132 int regs_res_id[2];
133 int irq_res_type;
134 struct resource *regs[2];
135 struct resource *irq;
136 void *ih;
137 eventhandler_tag eh;
138 struct proc *recovery_thread;
139 struct mtx mtx;
140 };
141
142 struct scb_platform_data {
143 };
144
145 /***************************** Core Includes **********************************/
146 #ifdef AHD_REG_PRETTY_PRINT
147 #define AIC_DEBUG_REGISTERS 1
148 #else
149 #define AIC_DEBUG_REGISTERS 0
150 #endif
151 #define AIC_CORE_INCLUDE <dev/aic7xxx/aic79xx.h>
152 #define AIC_LIB_PREFIX ahd
153 #define AIC_CONST_PREFIX AHD
154 #include <dev/aic7xxx/aic_osm_lib.h>
155
156 /*************************** Device Access ************************************/
157 #define ahd_inb(ahd, port) \
158 bus_space_read_1((ahd)->tags[(port) >> 8], \
159 (ahd)->bshs[(port) >> 8], (port) & 0xFF)
160
161 #define ahd_outb(ahd, port, value) \
162 bus_space_write_1((ahd)->tags[(port) >> 8], \
163 (ahd)->bshs[(port) >> 8], (port) & 0xFF, value)
164
165 #define ahd_inw_atomic(ahd, port) \
166 aic_le16toh(bus_space_read_2((ahd)->tags[(port) >> 8], \
167 (ahd)->bshs[(port) >> 8], (port) & 0xFF))
168
169 #define ahd_outw_atomic(ahd, port, value) \
170 bus_space_write_2((ahd)->tags[(port) >> 8], \
171 (ahd)->bshs[(port) >> 8], \
172 (port & 0xFF), aic_htole16(value))
173
174 #define ahd_outsb(ahd, port, valp, count) \
175 bus_space_write_multi_1((ahd)->tags[(port) >> 8], \
176 (ahd)->bshs[(port) >> 8], \
177 (port & 0xFF), valp, count)
178
179 #define ahd_insb(ahd, port, valp, count) \
180 bus_space_read_multi_1((ahd)->tags[(port) >> 8], \
181 (ahd)->bshs[(port) >> 8], \
182 (port & 0xFF), valp, count)
183
184 static __inline void ahd_flush_device_writes(struct ahd_softc *);
185
186 static __inline void
187 ahd_flush_device_writes(struct ahd_softc *ahd)
188 {
189 /* XXX Is this sufficient for all architectures??? */
190 ahd_inb(ahd, INTSTAT);
191 }
192
193 /**************************** Locking Primitives ******************************/
194 /* Lock protecting internal data structures */
195 static __inline void ahd_lockinit(struct ahd_softc *);
196 static __inline void ahd_lock(struct ahd_softc *);
197 static __inline void ahd_unlock(struct ahd_softc *);
198
199 static __inline void
200 ahd_lockinit(struct ahd_softc *ahd)
201 {
202 mtx_init(&ahd->platform_data->mtx, "ahd_lock", NULL, MTX_DEF);
203 }
204
205 static __inline void
206 ahd_lock(struct ahd_softc *ahd)
207 {
208 mtx_lock(&ahd->platform_data->mtx);
209 }
210
211 static __inline void
212 ahd_unlock(struct ahd_softc *ahd)
213 {
214 mtx_unlock(&ahd->platform_data->mtx);
215 }
216
217 /********************************** PCI ***************************************/
218 int ahd_pci_map_registers(struct ahd_softc *ahd);
219 int ahd_pci_map_int(struct ahd_softc *ahd);
220
221 /************************** Transaction Operations ****************************/
222 static __inline void aic_freeze_simq(struct aic_softc*);
223 static __inline void aic_release_simq(struct aic_softc*);
224
225 static __inline void
226 aic_freeze_simq(struct aic_softc *aic)
227 {
228 xpt_freeze_simq(aic->platform_data->sim, /*count*/1);
229 }
230
231 static __inline void
232 aic_release_simq(struct aic_softc *aic)
233 {
234 xpt_release_simq(aic->platform_data->sim, /*run queue*/TRUE);
235 }
236 /********************************* Debug **************************************/
237 static __inline void ahd_print_path(struct ahd_softc *, struct scb *);
238 static __inline void ahd_platform_dump_card_state(struct ahd_softc *ahd);
239
240 static __inline void
241 ahd_print_path(struct ahd_softc *ahd, struct scb *scb)
242 {
243 xpt_print_path(scb->io_ctx->ccb_h.path);
244 }
245
246 static __inline void
247 ahd_platform_dump_card_state(struct ahd_softc *ahd)
248 {
249 /* Nothing to do here for FreeBSD */
250 }
251 /**************************** Transfer Settings *******************************/
252 void ahd_notify_xfer_settings_change(struct ahd_softc *,
253 struct ahd_devinfo *);
254 void ahd_platform_set_tags(struct ahd_softc *, struct ahd_devinfo *,
255 int /*enable*/);
256
257 /************************* Initialization/Teardown ****************************/
258 int ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg);
259 void ahd_platform_free(struct ahd_softc *ahd);
260 int ahd_map_int(struct ahd_softc *ahd);
261 int ahd_attach(struct ahd_softc *);
262 int ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd);
263 void ahd_sysctl(struct ahd_softc *ahd);
264 int ahd_detach(device_t);
265 #define ahd_platform_init(arg)
266
267
268 /****************************** Interrupts ************************************/
269 void ahd_platform_intr(void *);
270 static __inline void ahd_platform_flushwork(struct ahd_softc *ahd);
271 static __inline void
272 ahd_platform_flushwork(struct ahd_softc *ahd)
273 {
274 }
275
276 /************************ Misc Function Declarations **************************/
277 void ahd_done(struct ahd_softc *ahd, struct scb *scb);
278 void ahd_send_async(struct ahd_softc *, char /*channel*/,
279 u_int /*target*/, u_int /*lun*/, ac_code, void *arg);
280 #endif /* _AIC79XX_FREEBSD_H_ */
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