1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright 2002 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate * Use is subject to license terms.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
28*0Sstevel@tonic-gate
29*0Sstevel@tonic-gate /*
30*0Sstevel@tonic-gate * s1394_fa.c
31*0Sstevel@tonic-gate * 1394 Services Layer Fixed Address Support Routines
32*0Sstevel@tonic-gate * Currently used for FCP support.
33*0Sstevel@tonic-gate */
34*0Sstevel@tonic-gate
35*0Sstevel@tonic-gate #include <sys/conf.h>
36*0Sstevel@tonic-gate #include <sys/ddi.h>
37*0Sstevel@tonic-gate #include <sys/sunddi.h>
38*0Sstevel@tonic-gate #include <sys/cmn_err.h>
39*0Sstevel@tonic-gate #include <sys/types.h>
40*0Sstevel@tonic-gate #include <sys/kmem.h>
41*0Sstevel@tonic-gate #include <sys/tnf_probe.h>
42*0Sstevel@tonic-gate
43*0Sstevel@tonic-gate #include <sys/1394/t1394.h>
44*0Sstevel@tonic-gate #include <sys/1394/s1394.h>
45*0Sstevel@tonic-gate #include <sys/1394/h1394.h>
46*0Sstevel@tonic-gate
47*0Sstevel@tonic-gate static void s1394_fa_completion_cb(cmd1394_cmd_t *cmd);
48*0Sstevel@tonic-gate
49*0Sstevel@tonic-gate /*
50*0Sstevel@tonic-gate * s1394_fa_claim_addr_blk()
51*0Sstevel@tonic-gate * Claim fixed address block.
52*0Sstevel@tonic-gate */
53*0Sstevel@tonic-gate int
s1394_fa_claim_addr(s1394_hal_t * hal,s1394_fa_type_t type,s1394_fa_descr_t * descr)54*0Sstevel@tonic-gate s1394_fa_claim_addr(s1394_hal_t *hal, s1394_fa_type_t type,
55*0Sstevel@tonic-gate s1394_fa_descr_t *descr)
56*0Sstevel@tonic-gate {
57*0Sstevel@tonic-gate t1394_alloc_addr_t addr;
58*0Sstevel@tonic-gate s1394_fa_hal_t *falp = &hal->hal_fa[type];
59*0Sstevel@tonic-gate int ret;
60*0Sstevel@tonic-gate
61*0Sstevel@tonic-gate TNF_PROBE_0_DEBUG(s1394_fa_claim_addr_enter, S1394_TNF_SL_FA_STACK, "");
62*0Sstevel@tonic-gate
63*0Sstevel@tonic-gate /* Might have been claimed already */
64*0Sstevel@tonic-gate if (falp->fal_addr_blk != NULL) {
65*0Sstevel@tonic-gate TNF_PROBE_0_DEBUG(s1394_fa_claim_addr_exit,
66*0Sstevel@tonic-gate S1394_TNF_SL_FA_STACK, "");
67*0Sstevel@tonic-gate return (DDI_SUCCESS);
68*0Sstevel@tonic-gate }
69*0Sstevel@tonic-gate
70*0Sstevel@tonic-gate falp->fal_descr = descr;
71*0Sstevel@tonic-gate
72*0Sstevel@tonic-gate bzero(&addr, sizeof (addr));
73*0Sstevel@tonic-gate addr.aa_type = T1394_ADDR_FIXED;
74*0Sstevel@tonic-gate addr.aa_address = descr->fd_addr;
75*0Sstevel@tonic-gate addr.aa_length = descr->fd_size;
76*0Sstevel@tonic-gate addr.aa_enable = descr->fd_enable;
77*0Sstevel@tonic-gate addr.aa_evts = descr->fd_evts;
78*0Sstevel@tonic-gate addr.aa_arg = hal;
79*0Sstevel@tonic-gate
80*0Sstevel@tonic-gate ret = s1394_claim_addr_blk(hal, &addr);
81*0Sstevel@tonic-gate if (ret != DDI_SUCCESS) {
82*0Sstevel@tonic-gate TNF_PROBE_2(s1394_fa_claim_addr_error, S1394_TNF_SL_FA_ERROR,
83*0Sstevel@tonic-gate "", tnf_int, type, type, tnf_int, ret, ret);
84*0Sstevel@tonic-gate } else {
85*0Sstevel@tonic-gate falp->fal_addr_blk = (s1394_addr_space_blk_t *)addr.aa_hdl;
86*0Sstevel@tonic-gate }
87*0Sstevel@tonic-gate
88*0Sstevel@tonic-gate TNF_PROBE_0_DEBUG(s1394_fa_claim_addr_exit, S1394_TNF_SL_FA_STACK, "");
89*0Sstevel@tonic-gate return (ret);
90*0Sstevel@tonic-gate }
91*0Sstevel@tonic-gate
92*0Sstevel@tonic-gate /*
93*0Sstevel@tonic-gate * s1394_fa_free_addr_blk()
94*0Sstevel@tonic-gate * Free fixed address block.
95*0Sstevel@tonic-gate */
96*0Sstevel@tonic-gate void
s1394_fa_free_addr(s1394_hal_t * hal,s1394_fa_type_t type)97*0Sstevel@tonic-gate s1394_fa_free_addr(s1394_hal_t *hal, s1394_fa_type_t type)
98*0Sstevel@tonic-gate {
99*0Sstevel@tonic-gate s1394_fa_hal_t *falp = &hal->hal_fa[type];
100*0Sstevel@tonic-gate int ret;
101*0Sstevel@tonic-gate
102*0Sstevel@tonic-gate TNF_PROBE_0_DEBUG(s1394_fa_free_addr_enter, S1394_TNF_SL_FA_STACK, "");
103*0Sstevel@tonic-gate
104*0Sstevel@tonic-gate /* Might have been freed already */
105*0Sstevel@tonic-gate if (falp->fal_addr_blk != NULL) {
106*0Sstevel@tonic-gate ret = s1394_free_addr_blk(hal, falp->fal_addr_blk);
107*0Sstevel@tonic-gate if (ret != DDI_SUCCESS) {
108*0Sstevel@tonic-gate TNF_PROBE_1(s1394_fa_free_addr_error,
109*0Sstevel@tonic-gate S1394_TNF_SL_FA_STACK, "", tnf_int, ret, ret);
110*0Sstevel@tonic-gate }
111*0Sstevel@tonic-gate falp->fal_addr_blk = NULL;
112*0Sstevel@tonic-gate }
113*0Sstevel@tonic-gate
114*0Sstevel@tonic-gate TNF_PROBE_0_DEBUG(s1394_fa_free_addr_exit, S1394_TNF_SL_FA_STACK, "");
115*0Sstevel@tonic-gate }
116*0Sstevel@tonic-gate
117*0Sstevel@tonic-gate /*
118*0Sstevel@tonic-gate * s1394_fa_list_add()
119*0Sstevel@tonic-gate * Add target to the list of FA clients.
120*0Sstevel@tonic-gate * target_list_rwlock should be writer-held.
121*0Sstevel@tonic-gate */
122*0Sstevel@tonic-gate void
s1394_fa_list_add(s1394_hal_t * hal,s1394_target_t * target,s1394_fa_type_t type)123*0Sstevel@tonic-gate s1394_fa_list_add(s1394_hal_t *hal, s1394_target_t *target,
124*0Sstevel@tonic-gate s1394_fa_type_t type)
125*0Sstevel@tonic-gate {
126*0Sstevel@tonic-gate s1394_fa_hal_t *fal = &hal->hal_fa[type];
127*0Sstevel@tonic-gate
128*0Sstevel@tonic-gate if (fal->fal_head == NULL) {
129*0Sstevel@tonic-gate ASSERT(fal->fal_tail == NULL);
130*0Sstevel@tonic-gate fal->fal_head = fal->fal_tail = target;
131*0Sstevel@tonic-gate } else {
132*0Sstevel@tonic-gate fal->fal_tail->target_fa[type].fat_next = target;
133*0Sstevel@tonic-gate fal->fal_tail = target;
134*0Sstevel@tonic-gate }
135*0Sstevel@tonic-gate fal->fal_gen++;
136*0Sstevel@tonic-gate }
137*0Sstevel@tonic-gate
138*0Sstevel@tonic-gate /*
139*0Sstevel@tonic-gate * s1394_fa_list_remove()
140*0Sstevel@tonic-gate * Remove target from the list of FA clients.
141*0Sstevel@tonic-gate * target_list_rwlock should be writer-held.
142*0Sstevel@tonic-gate */
143*0Sstevel@tonic-gate int
s1394_fa_list_remove(s1394_hal_t * hal,s1394_target_t * target,s1394_fa_type_t type)144*0Sstevel@tonic-gate s1394_fa_list_remove(s1394_hal_t *hal, s1394_target_t *target,
145*0Sstevel@tonic-gate s1394_fa_type_t type)
146*0Sstevel@tonic-gate {
147*0Sstevel@tonic-gate s1394_fa_hal_t *fal = &hal->hal_fa[type];
148*0Sstevel@tonic-gate s1394_target_t *curp, **nextp, *prevp = NULL;
149*0Sstevel@tonic-gate
150*0Sstevel@tonic-gate for (nextp = &fal->fal_head; (curp = *nextp) != NULL; ) {
151*0Sstevel@tonic-gate if (curp == target) {
152*0Sstevel@tonic-gate *nextp = target->target_fa[type].fat_next;
153*0Sstevel@tonic-gate if (target == fal->fal_tail) {
154*0Sstevel@tonic-gate fal->fal_tail = prevp;
155*0Sstevel@tonic-gate }
156*0Sstevel@tonic-gate fal->fal_gen++;
157*0Sstevel@tonic-gate return (DDI_SUCCESS);
158*0Sstevel@tonic-gate }
159*0Sstevel@tonic-gate nextp = &curp->target_fa[type].fat_next;
160*0Sstevel@tonic-gate prevp = curp;
161*0Sstevel@tonic-gate }
162*0Sstevel@tonic-gate return (DDI_FAILURE);
163*0Sstevel@tonic-gate }
164*0Sstevel@tonic-gate
165*0Sstevel@tonic-gate /*
166*0Sstevel@tonic-gate * s1394_fa_list_is_empty()
167*0Sstevel@tonic-gate * Returns B_TRUE if the target list is empty
168*0Sstevel@tonic-gate * target_list_rwlock should be at least reader-held.
169*0Sstevel@tonic-gate */
170*0Sstevel@tonic-gate boolean_t
s1394_fa_list_is_empty(s1394_hal_t * hal,s1394_fa_type_t type)171*0Sstevel@tonic-gate s1394_fa_list_is_empty(s1394_hal_t *hal, s1394_fa_type_t type)
172*0Sstevel@tonic-gate {
173*0Sstevel@tonic-gate s1394_fa_hal_t *fal = &hal->hal_fa[type];
174*0Sstevel@tonic-gate
175*0Sstevel@tonic-gate return (fal->fal_head == NULL);
176*0Sstevel@tonic-gate }
177*0Sstevel@tonic-gate
178*0Sstevel@tonic-gate /*
179*0Sstevel@tonic-gate * s1394_fa_list_gen()
180*0Sstevel@tonic-gate * Returns list generation number.
181*0Sstevel@tonic-gate * target_list_rwlock should be at least reader-held.
182*0Sstevel@tonic-gate */
183*0Sstevel@tonic-gate uint_t
s1394_fa_list_gen(s1394_hal_t * hal,s1394_fa_type_t type)184*0Sstevel@tonic-gate s1394_fa_list_gen(s1394_hal_t *hal, s1394_fa_type_t type)
185*0Sstevel@tonic-gate {
186*0Sstevel@tonic-gate s1394_fa_hal_t *fal = &hal->hal_fa[type];
187*0Sstevel@tonic-gate
188*0Sstevel@tonic-gate return (fal->fal_gen);
189*0Sstevel@tonic-gate }
190*0Sstevel@tonic-gate
191*0Sstevel@tonic-gate /*
192*0Sstevel@tonic-gate * s1394_fa_init_cmd()
193*0Sstevel@tonic-gate * initialize the FA specific part of the command
194*0Sstevel@tonic-gate */
195*0Sstevel@tonic-gate void
s1394_fa_init_cmd(s1394_cmd_priv_t * s_priv,s1394_fa_type_t type)196*0Sstevel@tonic-gate s1394_fa_init_cmd(s1394_cmd_priv_t *s_priv, s1394_fa_type_t type)
197*0Sstevel@tonic-gate {
198*0Sstevel@tonic-gate s_priv->cmd_ext_type = S1394_CMD_EXT_FA;
199*0Sstevel@tonic-gate s_priv->cmd_ext.fa.type = type;
200*0Sstevel@tonic-gate }
201*0Sstevel@tonic-gate
202*0Sstevel@tonic-gate /*
203*0Sstevel@tonic-gate * s1394_fa_convert_cmd()
204*0Sstevel@tonic-gate * convert an FA command (with a relative address) to a regular 1394 command
205*0Sstevel@tonic-gate */
206*0Sstevel@tonic-gate void
s1394_fa_convert_cmd(s1394_hal_t * hal,cmd1394_cmd_t * cmd)207*0Sstevel@tonic-gate s1394_fa_convert_cmd(s1394_hal_t *hal, cmd1394_cmd_t *cmd)
208*0Sstevel@tonic-gate {
209*0Sstevel@tonic-gate s1394_fa_cmd_priv_t *fa_priv = S1394_GET_FA_CMD_PRIV(cmd);
210*0Sstevel@tonic-gate
211*0Sstevel@tonic-gate cmd->cmd_addr += hal->hal_fa[fa_priv->type].fal_descr->fd_conv_base;
212*0Sstevel@tonic-gate fa_priv->completion_callback = cmd->completion_callback;
213*0Sstevel@tonic-gate fa_priv->callback_arg = cmd->cmd_callback_arg;
214*0Sstevel@tonic-gate cmd->completion_callback = s1394_fa_completion_cb;
215*0Sstevel@tonic-gate cmd->cmd_callback_arg = hal;
216*0Sstevel@tonic-gate }
217*0Sstevel@tonic-gate
218*0Sstevel@tonic-gate /*
219*0Sstevel@tonic-gate * s1394_fa_restore_cmd()
220*0Sstevel@tonic-gate * opposite of s1394_fa_convert_cmd(): regular 1394 command to FA command
221*0Sstevel@tonic-gate */
222*0Sstevel@tonic-gate void
s1394_fa_restore_cmd(s1394_hal_t * hal,cmd1394_cmd_t * cmd)223*0Sstevel@tonic-gate s1394_fa_restore_cmd(s1394_hal_t *hal, cmd1394_cmd_t *cmd)
224*0Sstevel@tonic-gate {
225*0Sstevel@tonic-gate s1394_fa_cmd_priv_t *fa_priv = S1394_GET_FA_CMD_PRIV(cmd);
226*0Sstevel@tonic-gate
227*0Sstevel@tonic-gate ASSERT(fa_priv->type < S1394_FA_NTYPES);
228*0Sstevel@tonic-gate
229*0Sstevel@tonic-gate cmd->cmd_addr -= hal->hal_fa[fa_priv->type].fal_descr->fd_conv_base;
230*0Sstevel@tonic-gate cmd->completion_callback = fa_priv->completion_callback;
231*0Sstevel@tonic-gate cmd->cmd_callback_arg = fa_priv->callback_arg;
232*0Sstevel@tonic-gate }
233*0Sstevel@tonic-gate
234*0Sstevel@tonic-gate /*
235*0Sstevel@tonic-gate * s1394_fa_check_restore_cmd()
236*0Sstevel@tonic-gate * if a command has FA extension, do s1394_fa_restore_cmd()
237*0Sstevel@tonic-gate */
238*0Sstevel@tonic-gate void
s1394_fa_check_restore_cmd(s1394_hal_t * hal,cmd1394_cmd_t * cmd)239*0Sstevel@tonic-gate s1394_fa_check_restore_cmd(s1394_hal_t *hal, cmd1394_cmd_t *cmd)
240*0Sstevel@tonic-gate {
241*0Sstevel@tonic-gate s1394_cmd_priv_t *s_priv = S1394_GET_CMD_PRIV(cmd);
242*0Sstevel@tonic-gate
243*0Sstevel@tonic-gate if (s_priv->cmd_ext_type == S1394_CMD_EXT_FA) {
244*0Sstevel@tonic-gate s1394_fa_restore_cmd(hal, cmd);
245*0Sstevel@tonic-gate }
246*0Sstevel@tonic-gate }
247*0Sstevel@tonic-gate
248*0Sstevel@tonic-gate /*
249*0Sstevel@tonic-gate * s1394_fa_completion_cb()
250*0Sstevel@tonic-gate * FA completion callback: restore command and call original callback
251*0Sstevel@tonic-gate */
252*0Sstevel@tonic-gate static void
s1394_fa_completion_cb(cmd1394_cmd_t * cmd)253*0Sstevel@tonic-gate s1394_fa_completion_cb(cmd1394_cmd_t *cmd)
254*0Sstevel@tonic-gate {
255*0Sstevel@tonic-gate s1394_hal_t *hal = cmd->cmd_callback_arg;
256*0Sstevel@tonic-gate
257*0Sstevel@tonic-gate TNF_PROBE_0_DEBUG(s1394_fa_completion_cb_enter,
258*0Sstevel@tonic-gate S1394_TNF_SL_FA_STACK, "");
259*0Sstevel@tonic-gate
260*0Sstevel@tonic-gate s1394_fa_restore_cmd(hal, cmd);
261*0Sstevel@tonic-gate
262*0Sstevel@tonic-gate if (cmd->completion_callback) {
263*0Sstevel@tonic-gate cmd->completion_callback(cmd);
264*0Sstevel@tonic-gate }
265*0Sstevel@tonic-gate
266*0Sstevel@tonic-gate TNF_PROBE_0_DEBUG(s1394_fa_completion_cb_exit,
267*0Sstevel@tonic-gate S1394_TNF_SL_FA_STACK, "");
268*0Sstevel@tonic-gate }
269