source: rtems/bsps/powerpc/beatnik/net/if_em/if_em_rtems.c @ 031df391

5
Last change on this file since 031df391 was 031df391, checked in by Sebastian Huber <sebastian.huber@…>, on Apr 23, 2018 at 7:53:31 AM

bsps: Move legacy network drivers to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

  • Property mode set to 100644
File size: 3.4 KB
Line 
1#include "rtemscompat_defs.h"
2#include "../porting/if_xxx_rtems.c"
3#include <bsp/early_enet_link_status.h>
4#include <bsp/if_em_pub.h>
5
6/* Provide a routine to check link status early,
7 * i.e., before the network is really running.
8 * In case someone wants to decide whether to use/configure
9 * this interface at all :-)
10 *
11 * NOTE: this routine tries to enable autonegotiation!
12 *
13 * unit: unit number starting with 1 (usual BSDNET convention)
14 *
15 * RETURNS: Phy status register contents (1<<2 means link up).
16 *          or -1 on error.
17 */
18
19/*
20 * Authorship
21 * ----------
22 * This software ('beatnik' RTEMS BSP for MVME6100 and MVME5500) was
23 *     created by Till Straumann <strauman@slac.stanford.edu>, 2005-2007,
24 *         Stanford Linear Accelerator Center, Stanford University.
25 *
26 * Acknowledgement of sponsorship
27 * ------------------------------
28 * The 'beatnik' BSP was produced by
29 *     the Stanford Linear Accelerator Center, Stanford University,
30 *         under Contract DE-AC03-76SFO0515 with the Department of Energy.
31 *
32 * Government disclaimer of liability
33 * ----------------------------------
34 * Neither the United States nor the United States Department of Energy,
35 * nor any of their employees, makes any warranty, express or implied, or
36 * assumes any legal liability or responsibility for the accuracy,
37 * completeness, or usefulness of any data, apparatus, product, or process
38 * disclosed, or represents that its use would not infringe privately owned
39 * rights.
40 *
41 * Stanford disclaimer of liability
42 * --------------------------------
43 * Stanford University makes no representations or warranties, express or
44 * implied, nor assumes any liability for the use of this software.
45 *
46 * Stanford disclaimer of copyright
47 * --------------------------------
48 * Stanford University, owner of the copyright, hereby disclaims its
49 * copyright and all other rights in this software.  Hence, anyone may
50 * freely use it for any purpose without restriction. 
51 *
52 * Maintenance of notices
53 * ----------------------
54 * In the interest of clarity regarding the origin and status of this
55 * SLAC software, this and all the preceding Stanford University notices
56 * are to remain affixed to any copy or derivative of this software made
57 * or distributed by the recipient and are to be affixed to any copy of
58 * software made or distributed by the recipient that contains a copy or
59 * derivative of this software.
60 *
61 * ------------------ SLAC Software Notices, Set 4 OTT.002a, 2004 FEB 03
62 */ 
63
64static int
65em_early_init(int idx)
66{
67        if ( idx < 0 || idx >= NETDRIVER_SLOTS )
68                return -1;
69        return em_hw_early_init(&the_em_devs[idx]);
70}
71
72static int
73em_early_read_phy(int idx, unsigned reg)
74{
75unsigned short data;
76        if ( idx < 0 || idx >= NETDRIVER_SLOTS )
77                return -1;
78        /* Bizarre - I always have to read PHY_STATUS twice until a good link
79         * status is read
80         */     
81        if ( em_read_phy_reg(&the_em_devs[idx].d_softc.hw, reg, &data) )
82                return -1;
83        if ( PHY_STATUS == reg ) {
84                /* read again */
85                if ( em_read_phy_reg(&the_em_devs[idx].d_softc.hw, PHY_STATUS, &data) )
86                        return -1;
87        }
88        return data;
89}
90
91static int
92em_early_write_phy(int idx, unsigned reg, unsigned val)
93{
94        if ( idx < 0 || idx >= NETDRIVER_SLOTS )
95                return -1;
96        return em_write_phy_reg(&the_em_devs[idx].d_softc.hw, reg, val);
97}
98
99rtems_bsdnet_early_link_check_ops
100rtems_em_early_link_check_ops = {
101        init:           em_early_init,
102        read_phy:       em_early_read_phy,
103        write_phy:      em_early_write_phy,
104        name:           NETDRIVER,
105        num_slots:      NETDRIVER_SLOTS
106};
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