1 /*
2 *
3 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
4 *
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the
16 * distribution.
17 *
18 * Neither the name of Texas Instruments Incorporated nor the names of
19 * its contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
28 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 *
34 */
38 /**
39 * @file sgmii.c
40 *
41 * @brief
42 * The sgmii driver for the ibl
43 *
44 */
46 #include "types.h"
47 #include "ibl.h"
48 #include "sgmii.h"
49 #include "target.h"
51 #define SGMII_ACCESS(port,reg) *((volatile unsigned int *)(sgmiis[port] + reg))
54 #ifdef TARGET_SGMII_TYPE_2
55 /**
56 * @brief
57 * Configure the sgmii on devices using the type 2 initialization sequence
58 */
59 int32 hwSgmiiConfig (int32 port, iblSgmii_t *iblSgmii)
60 {
61 unsigned int sgmiis[] = TARGET_SGMII_BASE_ADDRESSES;
64 SGMII_ACCESS(port, TARGET_SGMII_CONTROL) = 0; /* Disable negotiation */
66 #ifdef TARGET_SGMII_EXTERNAL_SERDES
68 targetSgmiiSerdesConfig (port, (void *)iblSgmii);
70 #else
72 /* Serdes configuration */
73 SGMII_ACCESS(port, TARGET_SGMII_TX_CFG) = iblSgmii->txConfig;
74 SGMII_ACCESS(port, TARGET_SGMII_RX_CFG) = iblSgmii->rxConfig;
75 SGMII_ACCESS(port, TARGET_SGMII_AUX_CFG) = iblSgmii->auxConfig;
77 #endif
79 SGMII_ACCESS(port, TARGET_SGMII_MR_ADV_ABILITY) = iblSgmii->adviseAbility;
80 SGMII_ACCESS(port, TARGET_SGMII_CONTROL) = iblSgmii->control;
82 return (0);
84 }
87 #else
88 /**
89 * @brief
90 * Configure the sgmii
91 */
92 int32 hwSgmiiConfig (int32 port, iblSgmii_t *iblSgmii)
93 {
94 unsigned int sgmiis[] = TARGET_SGMII_BASE_ADDRESSES;
95 int32 v;
97 if (port >= TARGET_EMAC_N_PORTS)
98 return (-1);
101 SGMII_ACCESS(port, TARGET_SGMII_SOFT_RESET) = 1;
103 do {
105 v = SGMII_ACCESS(port, TARGET_SGMII_SOFT_RESET);
107 } while (v & 1);
109 /* Bit 1 holds tx/rx in reset. Used during loopback state change in
110 * the control register */
111 SGMII_ACCESS(port, TARGET_SGMII_SOFT_RESET) = 2;
114 SGMII_ACCESS(port, TARGET_SGMII_CONTROL) = iblSgmii->control;
115 SGMII_ACCESS(port, TARGET_SGMII_SOFT_RESET) = 0;
117 SGMII_ACCESS(port, TARGET_SGMII_MR_ADV_ABILITY) = iblSgmii->adviseAbility;
119 #ifdef TARGET_SGMII_EXTERNAL_SERDES
121 targetSgmiiSerdesConfig (port, (void *)iblSgmii);
123 #else
125 /* Serdes configuration */
126 SGMII_ACCESS(port, TARGET_SGMII_TX_CFG) = iblSgmii->txConfig;
127 SGMII_ACCESS(port, TARGET_SGMII_RX_CFG) = iblSgmii->rxConfig;
128 SGMII_ACCESS(port, TARGET_SGMII_AUX_CFG) = iblSgmii->auxConfig;
130 #endif
132 return (0);
134 }
136 #endif