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07590ff0 AB |
1 | /* |
2 | * IDT CPS RapidIO switches support | |
3 | * | |
058f88d6 AB |
4 | * Copyright 2009-2010 Integrated Device Technology, Inc. |
5 | * Alexandre Bounine <alexandre.bounine@idt.com> | |
07590ff0 AB |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | */ | |
12 | ||
13 | #include <linux/rio.h> | |
14 | #include <linux/rio_drv.h> | |
15 | #include <linux/rio_ids.h> | |
2ec3ba69 | 16 | #include <linux/module.h> |
07590ff0 AB |
17 | #include "../rio.h" |
18 | ||
679395fd AB |
19 | #define CPS_DEFAULT_ROUTE 0xde |
20 | #define CPS_NO_ROUTE 0xdf | |
07590ff0 | 21 | |
7a88d628 AB |
22 | #define IDTCPS_RIO_DOMAIN 0xf20020 |
23 | ||
07590ff0 AB |
24 | static int |
25 | idtcps_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount, | |
26 | u16 table, u16 route_destid, u8 route_port) | |
27 | { | |
28 | u32 result; | |
29 | ||
0bf2461f AB |
30 | if (route_port == RIO_INVALID_ROUTE) |
31 | route_port = CPS_DEFAULT_ROUTE; | |
32 | ||
07590ff0 AB |
33 | if (table == RIO_GLOBAL_TABLE) { |
34 | rio_mport_write_config_32(mport, destid, hopcount, | |
35 | RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid); | |
36 | ||
37 | rio_mport_read_config_32(mport, destid, hopcount, | |
38 | RIO_STD_RTE_CONF_PORT_SEL_CSR, &result); | |
39 | ||
40 | result = (0xffffff00 & result) | (u32)route_port; | |
41 | rio_mport_write_config_32(mport, destid, hopcount, | |
42 | RIO_STD_RTE_CONF_PORT_SEL_CSR, result); | |
43 | } | |
44 | ||
45 | return 0; | |
46 | } | |
47 | ||
48 | static int | |
49 | idtcps_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount, | |
50 | u16 table, u16 route_destid, u8 *route_port) | |
51 | { | |
52 | u32 result; | |
53 | ||
54 | if (table == RIO_GLOBAL_TABLE) { | |
55 | rio_mport_write_config_32(mport, destid, hopcount, | |
56 | RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid); | |
57 | ||
58 | rio_mport_read_config_32(mport, destid, hopcount, | |
59 | RIO_STD_RTE_CONF_PORT_SEL_CSR, &result); | |
60 | ||
679395fd AB |
61 | if (CPS_DEFAULT_ROUTE == (u8)result || |
62 | CPS_NO_ROUTE == (u8)result) | |
63 | *route_port = RIO_INVALID_ROUTE; | |
64 | else | |
65 | *route_port = (u8)result; | |
07590ff0 AB |
66 | } |
67 | ||
68 | return 0; | |
69 | } | |
70 | ||
71 | static int | |
72 | idtcps_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount, | |
73 | u16 table) | |
74 | { | |
75 | u32 i; | |
76 | ||
77 | if (table == RIO_GLOBAL_TABLE) { | |
78 | for (i = 0x80000000; i <= 0x800000ff;) { | |
79 | rio_mport_write_config_32(mport, destid, hopcount, | |
80 | RIO_STD_RTE_CONF_DESTID_SEL_CSR, i); | |
81 | rio_mport_write_config_32(mport, destid, hopcount, | |
82 | RIO_STD_RTE_CONF_PORT_SEL_CSR, | |
679395fd AB |
83 | (CPS_DEFAULT_ROUTE << 24) | |
84 | (CPS_DEFAULT_ROUTE << 16) | | |
85 | (CPS_DEFAULT_ROUTE << 8) | CPS_DEFAULT_ROUTE); | |
07590ff0 AB |
86 | i += 4; |
87 | } | |
88 | } | |
89 | ||
90 | return 0; | |
91 | } | |
92 | ||
7a88d628 AB |
93 | static int |
94 | idtcps_set_domain(struct rio_mport *mport, u16 destid, u8 hopcount, | |
95 | u8 sw_domain) | |
96 | { | |
97 | /* | |
98 | * Switch domain configuration operates only at global level | |
99 | */ | |
100 | rio_mport_write_config_32(mport, destid, hopcount, | |
101 | IDTCPS_RIO_DOMAIN, (u32)sw_domain); | |
102 | return 0; | |
103 | } | |
104 | ||
105 | static int | |
106 | idtcps_get_domain(struct rio_mport *mport, u16 destid, u8 hopcount, | |
107 | u8 *sw_domain) | |
108 | { | |
109 | u32 regval; | |
110 | ||
111 | /* | |
112 | * Switch domain configuration operates only at global level | |
113 | */ | |
114 | rio_mport_read_config_32(mport, destid, hopcount, | |
115 | IDTCPS_RIO_DOMAIN, ®val); | |
116 | ||
117 | *sw_domain = (u8)(regval & 0xff); | |
118 | ||
119 | return 0; | |
120 | } | |
121 | ||
2ec3ba69 AB |
122 | static struct rio_switch_ops idtcps_switch_ops = { |
123 | .owner = THIS_MODULE, | |
124 | .add_entry = idtcps_route_add_entry, | |
125 | .get_entry = idtcps_route_get_entry, | |
126 | .clr_table = idtcps_route_clr_table, | |
127 | .set_domain = idtcps_set_domain, | |
128 | .get_domain = idtcps_get_domain, | |
129 | .em_init = NULL, | |
130 | .em_handle = NULL, | |
131 | }; | |
132 | ||
133 | static int idtcps_probe(struct rio_dev *rdev, const struct rio_device_id *id) | |
058f88d6 AB |
134 | { |
135 | pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev)); | |
2ec3ba69 AB |
136 | |
137 | spin_lock(&rdev->rswitch->lock); | |
138 | ||
139 | if (rdev->rswitch->ops) { | |
140 | spin_unlock(&rdev->rswitch->lock); | |
141 | return -EINVAL; | |
142 | } | |
143 | ||
144 | rdev->rswitch->ops = &idtcps_switch_ops; | |
145 | ||
146 | if (rdev->do_enum) { | |
dd5648c9 | 147 | /* set TVAL = ~50us */ |
a93192a5 | 148 | rio_write_config_32(rdev, |
dd5648c9 | 149 | rdev->phys_efptr + RIO_PORT_LINKTO_CTL_CSR, 0x8e << 8); |
0bf2461f AB |
150 | /* Ensure that default routing is disabled on startup */ |
151 | rio_write_config_32(rdev, | |
152 | RIO_STD_RTE_DEFAULT_PORT, CPS_NO_ROUTE); | |
dd5648c9 AB |
153 | } |
154 | ||
2ec3ba69 | 155 | spin_unlock(&rdev->rswitch->lock); |
058f88d6 AB |
156 | return 0; |
157 | } | |
158 | ||
2ec3ba69 AB |
159 | static void idtcps_remove(struct rio_dev *rdev) |
160 | { | |
161 | pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev)); | |
162 | spin_lock(&rdev->rswitch->lock); | |
163 | if (rdev->rswitch->ops != &idtcps_switch_ops) { | |
164 | spin_unlock(&rdev->rswitch->lock); | |
165 | return; | |
166 | } | |
167 | rdev->rswitch->ops = NULL; | |
168 | spin_unlock(&rdev->rswitch->lock); | |
169 | } | |
170 | ||
171 | static struct rio_device_id idtcps_id_table[] = { | |
172 | {RIO_DEVICE(RIO_DID_IDTCPS6Q, RIO_VID_IDT)}, | |
173 | {RIO_DEVICE(RIO_DID_IDTCPS8, RIO_VID_IDT)}, | |
174 | {RIO_DEVICE(RIO_DID_IDTCPS10Q, RIO_VID_IDT)}, | |
175 | {RIO_DEVICE(RIO_DID_IDTCPS12, RIO_VID_IDT)}, | |
176 | {RIO_DEVICE(RIO_DID_IDTCPS16, RIO_VID_IDT)}, | |
177 | {RIO_DEVICE(RIO_DID_IDT70K200, RIO_VID_IDT)}, | |
178 | { 0, } /* terminate list */ | |
179 | }; | |
180 | ||
181 | static struct rio_driver idtcps_driver = { | |
182 | .name = "idtcps", | |
183 | .id_table = idtcps_id_table, | |
184 | .probe = idtcps_probe, | |
185 | .remove = idtcps_remove, | |
186 | }; | |
187 | ||
188 | static int __init idtcps_init(void) | |
189 | { | |
190 | return rio_register_driver(&idtcps_driver); | |
191 | } | |
192 | ||
193 | static void __exit idtcps_exit(void) | |
194 | { | |
195 | rio_unregister_driver(&idtcps_driver); | |
196 | } | |
197 | ||
198 | device_initcall(idtcps_init); | |
199 | module_exit(idtcps_exit); | |
200 | ||
201 | MODULE_DESCRIPTION("IDT CPS Gen.1 Serial RapidIO switch family driver"); | |
202 | MODULE_AUTHOR("Integrated Device Technology, Inc."); | |
203 | MODULE_LICENSE("GPL"); |