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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> | |
16 | #include "../rio.h" | |
17 | ||
679395fd AB |
18 | #define CPS_DEFAULT_ROUTE 0xde |
19 | #define CPS_NO_ROUTE 0xdf | |
07590ff0 | 20 | |
7a88d628 AB |
21 | #define IDTCPS_RIO_DOMAIN 0xf20020 |
22 | ||
07590ff0 AB |
23 | static int |
24 | idtcps_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount, | |
25 | u16 table, u16 route_destid, u8 route_port) | |
26 | { | |
27 | u32 result; | |
28 | ||
0bf2461f AB |
29 | if (route_port == RIO_INVALID_ROUTE) |
30 | route_port = CPS_DEFAULT_ROUTE; | |
31 | ||
07590ff0 AB |
32 | if (table == RIO_GLOBAL_TABLE) { |
33 | rio_mport_write_config_32(mport, destid, hopcount, | |
34 | RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid); | |
35 | ||
36 | rio_mport_read_config_32(mport, destid, hopcount, | |
37 | RIO_STD_RTE_CONF_PORT_SEL_CSR, &result); | |
38 | ||
39 | result = (0xffffff00 & result) | (u32)route_port; | |
40 | rio_mport_write_config_32(mport, destid, hopcount, | |
41 | RIO_STD_RTE_CONF_PORT_SEL_CSR, result); | |
42 | } | |
43 | ||
44 | return 0; | |
45 | } | |
46 | ||
47 | static int | |
48 | idtcps_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount, | |
49 | u16 table, u16 route_destid, u8 *route_port) | |
50 | { | |
51 | u32 result; | |
52 | ||
53 | if (table == RIO_GLOBAL_TABLE) { | |
54 | rio_mport_write_config_32(mport, destid, hopcount, | |
55 | RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid); | |
56 | ||
57 | rio_mport_read_config_32(mport, destid, hopcount, | |
58 | RIO_STD_RTE_CONF_PORT_SEL_CSR, &result); | |
59 | ||
679395fd AB |
60 | if (CPS_DEFAULT_ROUTE == (u8)result || |
61 | CPS_NO_ROUTE == (u8)result) | |
62 | *route_port = RIO_INVALID_ROUTE; | |
63 | else | |
64 | *route_port = (u8)result; | |
07590ff0 AB |
65 | } |
66 | ||
67 | return 0; | |
68 | } | |
69 | ||
70 | static int | |
71 | idtcps_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount, | |
72 | u16 table) | |
73 | { | |
74 | u32 i; | |
75 | ||
76 | if (table == RIO_GLOBAL_TABLE) { | |
77 | for (i = 0x80000000; i <= 0x800000ff;) { | |
78 | rio_mport_write_config_32(mport, destid, hopcount, | |
79 | RIO_STD_RTE_CONF_DESTID_SEL_CSR, i); | |
80 | rio_mport_write_config_32(mport, destid, hopcount, | |
81 | RIO_STD_RTE_CONF_PORT_SEL_CSR, | |
679395fd AB |
82 | (CPS_DEFAULT_ROUTE << 24) | |
83 | (CPS_DEFAULT_ROUTE << 16) | | |
84 | (CPS_DEFAULT_ROUTE << 8) | CPS_DEFAULT_ROUTE); | |
07590ff0 AB |
85 | i += 4; |
86 | } | |
87 | } | |
88 | ||
89 | return 0; | |
90 | } | |
91 | ||
7a88d628 AB |
92 | static int |
93 | idtcps_set_domain(struct rio_mport *mport, u16 destid, u8 hopcount, | |
94 | u8 sw_domain) | |
95 | { | |
96 | /* | |
97 | * Switch domain configuration operates only at global level | |
98 | */ | |
99 | rio_mport_write_config_32(mport, destid, hopcount, | |
100 | IDTCPS_RIO_DOMAIN, (u32)sw_domain); | |
101 | return 0; | |
102 | } | |
103 | ||
104 | static int | |
105 | idtcps_get_domain(struct rio_mport *mport, u16 destid, u8 hopcount, | |
106 | u8 *sw_domain) | |
107 | { | |
108 | u32 regval; | |
109 | ||
110 | /* | |
111 | * Switch domain configuration operates only at global level | |
112 | */ | |
113 | rio_mport_read_config_32(mport, destid, hopcount, | |
114 | IDTCPS_RIO_DOMAIN, ®val); | |
115 | ||
116 | *sw_domain = (u8)(regval & 0xff); | |
117 | ||
118 | return 0; | |
119 | } | |
120 | ||
058f88d6 AB |
121 | static int idtcps_switch_init(struct rio_dev *rdev, int do_enum) |
122 | { | |
123 | pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev)); | |
124 | rdev->rswitch->add_entry = idtcps_route_add_entry; | |
125 | rdev->rswitch->get_entry = idtcps_route_get_entry; | |
126 | rdev->rswitch->clr_table = idtcps_route_clr_table; | |
7a88d628 AB |
127 | rdev->rswitch->set_domain = idtcps_set_domain; |
128 | rdev->rswitch->get_domain = idtcps_get_domain; | |
058f88d6 AB |
129 | rdev->rswitch->em_init = NULL; |
130 | rdev->rswitch->em_handle = NULL; | |
131 | ||
dd5648c9 AB |
132 | if (do_enum) { |
133 | /* set TVAL = ~50us */ | |
a93192a5 | 134 | rio_write_config_32(rdev, |
dd5648c9 | 135 | rdev->phys_efptr + RIO_PORT_LINKTO_CTL_CSR, 0x8e << 8); |
0bf2461f AB |
136 | /* Ensure that default routing is disabled on startup */ |
137 | rio_write_config_32(rdev, | |
138 | RIO_STD_RTE_DEFAULT_PORT, CPS_NO_ROUTE); | |
dd5648c9 AB |
139 | } |
140 | ||
058f88d6 AB |
141 | return 0; |
142 | } | |
143 | ||
144 | DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS6Q, idtcps_switch_init); | |
145 | DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS8, idtcps_switch_init); | |
146 | DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS10Q, idtcps_switch_init); | |
147 | DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS12, idtcps_switch_init); | |
148 | DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS16, idtcps_switch_init); | |
149 | DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDT70K200, idtcps_switch_init); |