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 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions, and the following disclaimer,
13 * without modification.
14 * 2. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * Alternatively, this software may be distributed under the terms of the
18 * GNU Public License ("GPL").
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
24 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic7xxx_osm.h#18 $
33 *
34 * $FreeBSD: releng/8.4/sys/dev/aic7xxx/aic7xxx_osm.h 218992 2011-02-24 10:23:22Z brucec $
35 */
36
37 #ifndef _AIC7XXX_FREEBSD_H_
38 #define _AIC7XXX_FREEBSD_H_
39
40 #include <opt_aic7xxx.h> /* for config options */
41
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/bus.h> /* For device_t */
45 #if __FreeBSD_version >= 500000
46 #include <sys/endian.h>
47 #endif
48 #include <sys/eventhandler.h>
49 #include <sys/kernel.h>
50 #include <sys/malloc.h>
51 #include <sys/module.h>
52 #include <sys/queue.h>
53
54 #if __FreeBSD_version < 500000
55 #include <pci.h>
56 #else
57 #define NPCI 1
58 #endif
59
60 #if NPCI > 0
61 #define AIC_PCI_CONFIG 1
62 #endif
63 #include <machine/bus.h>
64 #include <machine/endian.h>
65 #include <machine/resource.h>
66
67 #include <sys/rman.h>
68
69 #if NPCI > 0
70 #if __FreeBSD_version >= 500000
71 #include <dev/pci/pcireg.h>
72 #include <dev/pci/pcivar.h>
73 #else
74 #include <pci/pcireg.h>
75 #include <pci/pcivar.h>
76 #endif
77 #endif
78
79 #include <cam/cam.h>
80 #include <cam/cam_ccb.h>
81 #include <cam/cam_debug.h>
82 #include <cam/cam_sim.h>
83 #include <cam/cam_xpt_sim.h>
84
85 #include <cam/scsi/scsi_all.h>
86 #include <cam/scsi/scsi_message.h>
87
88 /*************************** Attachment Bookkeeping ***************************/
89 extern devclass_t ahc_devclass;
90
91 /****************************** Platform Macros *******************************/
92 #define SIM_IS_SCSIBUS_B(ahc, sim) \
93 ((sim) == ahc->platform_data->sim_b)
94 #define SIM_CHANNEL(ahc, sim) \
95 (((sim) == ahc->platform_data->sim_b) ? 'B' : 'A')
96 #define SIM_SCSI_ID(ahc, sim) \
97 (((sim) == ahc->platform_data->sim_b) ? ahc->our_id_b : ahc->our_id)
98 #define SIM_PATH(ahc, sim) \
99 (((sim) == ahc->platform_data->sim_b) ? ahc->platform_data->path_b \
100 : ahc->platform_data->path)
101 #define BUILD_SCSIID(ahc, sim, target_id, our_id) \
102 ((((target_id) << TID_SHIFT) & TID) | (our_id) \
103 | (SIM_IS_SCSIBUS_B(ahc, sim) ? TWIN_CHNLB : 0))
104
105 #define SCB_GET_SIM(ahc, scb) \
106 (SCB_GET_CHANNEL(ahc, scb) == 'A' ? (ahc)->platform_data->sim \
107 : (ahc)->platform_data->sim_b)
108
109 #ifndef offsetof
110 #define offsetof(type, member) ((size_t)(&((type *)0)->member))
111 #endif
112
113 /************************ Tunable Driver Parameters **************************/
114 /*
115 * The number of dma segments supported. The sequencer can handle any number
116 * of physically contiguous S/G entrys. To reduce the driver's memory
117 * consumption, we limit the number supported to be sufficient to handle
118 * the largest mapping supported by the legacy kernel MAXPHYS setting of
119 * 128K. This can be increased once some testing is done. Assuming the
120 * be the number of paged sized transfers in MAXPHYS plus an extra element
121 * to handle any unaligned residual. The sequencer fetches SG elements
122 * in cacheline sized chucks, so make the number per-transaction an even
123 * multiple of 16 which should align us on even the largest of cacheline
124 * boundaries.
125 */
126 #define AHC_MAXPHYS (128 * 1024)
127 #define AHC_NSEG (roundup(btoc(AHC_MAXPHYS) + 1, 16))
128
129 /* This driver supports target mode */
130 #define AHC_TARGET_MODE 1
131
132 /************************** Softc/SCB Platform Data ***************************/
133 struct ahc_platform_data {
134 /*
135 * Hooks into the XPT.
136 */
137 struct cam_sim *sim;
138 struct cam_sim *sim_b;
139 struct cam_path *path;
140 struct cam_path *path_b;
141
142 int regs_res_type;
143 int regs_res_id;
144 int irq_res_type;
145 struct resource *regs;
146 struct resource *irq;
147 void *ih;
148 eventhandler_tag eh;
149 struct proc *recovery_thread;
150 struct mtx mtx;
151 };
152
153 struct scb_platform_data {
154 };
155
156 /***************************** Core Includes **********************************/
157 #ifdef AHC_REG_PRETTY_PRINT
158 #define AIC_DEBUG_REGISTERS 1
159 #else
160 #define AIC_DEBUG_REGISTERS 0
161 #endif
162 #define AIC_CORE_INCLUDE <dev/aic7xxx/aic7xxx.h>
163 #define AIC_LIB_PREFIX ahc
164 #define AIC_CONST_PREFIX AHC
165 #include <dev/aic7xxx/aic_osm_lib.h>
166
167 /*************************** Device Access ************************************/
168 #define ahc_inb(ahc, port) \
169 bus_space_read_1((ahc)->tag, (ahc)->bsh, port)
170
171 #define ahc_outb(ahc, port, value) \
172 bus_space_write_1((ahc)->tag, (ahc)->bsh, port, value)
173
174 #define ahc_outsb(ahc, port, valp, count) \
175 bus_space_write_multi_1((ahc)->tag, (ahc)->bsh, port, valp, count)
176
177 #define ahc_insb(ahc, port, valp, count) \
178 bus_space_read_multi_1((ahc)->tag, (ahc)->bsh, port, valp, count)
179
180 static __inline void ahc_flush_device_writes(struct ahc_softc *);
181
182 static __inline void
183 ahc_flush_device_writes(struct ahc_softc *ahc)
184 {
185 /* XXX Is this sufficient for all architectures??? */
186 ahc_inb(ahc, INTSTAT);
187 }
188
189 /**************************** Locking Primitives ******************************/
190 /* Lock protecting internal data structures */
191 static __inline void ahc_lockinit(struct ahc_softc *);
192 static __inline void ahc_lock(struct ahc_softc *);
193 static __inline void ahc_unlock(struct ahc_softc *);
194
195 static __inline void
196 ahc_lockinit(struct ahc_softc *ahc)
197 {
198 mtx_init(&ahc->platform_data->mtx, "ahc_lock", NULL, MTX_DEF);
199 }
200
201 static __inline void
202 ahc_lock(struct ahc_softc *ahc)
203 {
204 mtx_lock(&ahc->platform_data->mtx);
205 }
206
207 static __inline void
208 ahc_unlock(struct ahc_softc *ahc)
209 {
210 mtx_unlock(&ahc->platform_data->mtx);
211 }
212
213 /************************* Initialization/Teardown ****************************/
214 int ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg);
215 void ahc_platform_free(struct ahc_softc *ahc);
216 int ahc_map_int(struct ahc_softc *ahc);
217 int ahc_attach(struct ahc_softc *);
218 int ahc_softc_comp(struct ahc_softc *lahc, struct ahc_softc *rahc);
219 int ahc_detach(device_t);
220
221 /********************************** PCI ***************************************/
222 #ifdef AIC_PCI_CONFIG
223 int ahc_pci_map_registers(struct ahc_softc *ahc);
224 #define ahc_pci_map_int ahc_map_int
225 #endif /*AIC_PCI_CONFIG*/
226
227 /******************************** VL/EISA *************************************/
228 int aic7770_map_registers(struct ahc_softc *ahc, u_int port);
229 static __inline int aic7770_map_int(struct ahc_softc *, int);
230
231 static __inline int
232 aic7770_map_int(struct ahc_softc *ahc, int irq)
233 {
234 /*
235 * The IRQ is unused in the FreeBSD
236 * implementation since the EISA and
237 * ISA attachments register the IRQ
238 * with newbus before the core is called.
239 */
240 return ahc_map_int(ahc);
241 }
242
243 /********************************* Debug **************************************/
244 static __inline void ahc_print_path(struct ahc_softc *, struct scb *);
245 static __inline void ahc_platform_dump_card_state(struct ahc_softc *ahc);
246
247 static __inline void
248 ahc_print_path(struct ahc_softc *ahc, struct scb *scb)
249 {
250 xpt_print_path(scb->io_ctx->ccb_h.path);
251 }
252
253 static __inline void
254 ahc_platform_dump_card_state(struct ahc_softc *ahc)
255 {
256 /* Nothing to do here for FreeBSD */
257 }
258 /**************************** Transfer Settings *******************************/
259 void ahc_notify_xfer_settings_change(struct ahc_softc *,
260 struct ahc_devinfo *);
261 void ahc_platform_set_tags(struct ahc_softc *, struct ahc_devinfo *,
262 int /*enable*/);
263
264 /****************************** Interrupts ************************************/
265 void ahc_platform_intr(void *);
266 static __inline void ahc_platform_flushwork(struct ahc_softc *ahc);
267 static __inline void
268 ahc_platform_flushwork(struct ahc_softc *ahc)
269 {
270 }
271
272 /************************ Misc Function Declarations **************************/
273 void ahc_done(struct ahc_softc *ahc, struct scb *scb);
274 void ahc_send_async(struct ahc_softc *, char /*channel*/,
275 u_int /*target*/, u_int /*lun*/, ac_code, void *arg);
276 #endif /* _AIC7XXX_FREEBSD_H_ */
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