source: rtems/c/src/lib/libbsp/arm/edb7312/network/network.c @ db28d621

4.104.114.84.95
Last change on this file since db28d621 was aff9de8, checked in by Joel Sherrill <joel.sherrill@…>, on 11/13/02 at 22:11:07

2002-11-13 Joel Sherrill <joel@…>

  • network/network.c: Removed warning per Jay's suggestion.
  • Property mode set to 100644
File size: 3.3 KB
Line 
1#include <rtems.h>
2#include <sys/mbuf.h>
3#include <irq.h>
4#include <libchip/cs8900.h>
5
6#define CS8900_BASE 0x20000300
7unsigned int bsp_cs8900_io_base = 0;
8unsigned int bsp_cs8900_memory_base = 0;
9cs8900_device *g_cs;
10rtems_irq_hdl cs8900_isr(rtems_vector_number v);
11rtems_irq_connect_data cs8900_isr_data = {BSP_EINT3,
12                                         (rtems_irq_hdl)cs8900_isr,
13                                         NULL,
14                                         NULL,
15                                         NULL,
16                                         0,
17                                         0 };
18
19char g_enetbuf[1520];
20
21rtems_isr cs8900_isr(rtems_vector_number v)
22{
23    cs8900_interrupt(v, g_cs);
24}
25
26/* cs8900_io_set_reg - set one of the I/O addressed registers */
27void cs8900_io_set_reg (int dev, unsigned short reg, unsigned short data)
28{
29    /* works the same for all values of dev */
30/*
31    printf("cs8900_io_set_reg: reg: %#6x, val %#6x\n",
32           CS8900_BASE + reg,
33           data);
34*/
35   *(unsigned short *)(CS8900_BASE + reg) = data;
36}
37
38/* cs8900_io_get_reg - reads one of the I/O addressed registers */
39unsigned short cs8900_io_get_reg (int dev, unsigned short reg)
40{
41    unsigned short val;
42    /* works the same for all values of dev */
43    val = *(unsigned short *)(CS8900_BASE + reg);
44/*
45    printf("cs8900_io_get_reg: reg: %#6x, val %#6x\n", reg, val);
46*/
47    return val;
48}
49
50/* cs8900_mem_set_reg - sets one of the registers mapped through
51 *                      PacketPage
52 */
53void cs8900_mem_set_reg (int dev, unsigned long reg, unsigned short data)
54{
55    /* works the same for all values of dev */
56    cs8900_io_set_reg(dev, CS8900_IO_PACKET_PAGE_PTR, reg);
57    cs8900_io_set_reg(dev, CS8900_IO_PP_DATA_PORT0, data);
58}
59
60/* cs8900_mem_get_reg - reads one of the registers mapped through
61 *                      PacketPage
62 */
63unsigned short cs8900_mem_get_reg (int dev, unsigned long reg)
64{
65    /* works the same for all values of dev */
66    cs8900_io_set_reg(dev, CS8900_IO_PACKET_PAGE_PTR, reg);
67    return cs8900_io_get_reg(dev, CS8900_IO_PP_DATA_PORT0);
68}
69
70void cs8900_get_mac_addr (int dev, unsigned char *mac_address)
71{
72    mac_address[0] = 0x08;
73    mac_address[1] = 0x00;
74    mac_address[2] = 0x3e;
75    mac_address[3] = 0x21;
76    mac_address[4] = 0xc7;
77    mac_address[5] = 0xf7;
78}
79
80void cs8900_attach_interrupt (int dev, cs8900_device *cs)
81{
82    g_cs = cs;
83    BSP_install_rtems_irq_handler(&cs8900_isr_data);
84}
85
86void cs8900_detach_interrupt (int dev)
87{
88    BSP_remove_rtems_irq_handler(&cs8900_isr_data);
89}
90
91unsigned short cs8900_get_data_block (int dev, unsigned char *data)
92{
93    int len;
94    int i;
95
96    len = cs8900_mem_get_reg(dev, CS8900_PP_RxLength);
97
98    for (i = 0; i < ((len + 1) / 2); i++) {
99        ((short *)data)[i] = cs8900_io_get_reg(dev,
100                                               CS8900_IO_RX_TX_DATA_PORT0);
101    }
102    return len;
103}
104
105void cs8900_tx_load (int dev, struct mbuf *m)
106{
107    int len;
108    short *data;
109    int i;
110
111    len = 0;
112
113    do {
114        memcpy(&g_enetbuf[len], mtod(m, const void *), m->m_len);
115        len += m->m_len;
116        m = m->m_next;
117    } while (m != 0);
118   
119    data = (unsigned short *) &g_enetbuf[0];
120    for (i = 0; i < ((len + 1) / 2); i++) {
121        cs8900_io_set_reg(dev,
122                          CS8900_IO_RX_TX_DATA_PORT0,
123                          data[i]);
124    }
125}
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