1 #include <linux/delay.h>
2 #include <linux/if_ether.h>
3 #include <linux/ioport.h>
4 #include <linux/mv643xx.h>
5 #include <linux/platform_device.h>
7 #include "jaguar_atx_fpga.h"
9 #if defined(CONFIG_MV643XX_ETH) || defined(CONFIG_MV643XX_ETH_MODULE)
11 static struct resource mv643xx_eth_shared_resources[] = {
13 .name = "ethernet shared base",
14 .start = 0xf1000000 + MV643XX_ETH_SHARED_REGS,
15 .end = 0xf1000000 + MV643XX_ETH_SHARED_REGS +
16 MV643XX_ETH_SHARED_REGS_SIZE - 1,
17 .flags = IORESOURCE_MEM,
21 static struct platform_device mv643xx_eth_shared_device = {
22 .name = MV643XX_ETH_SHARED_NAME,
24 .num_resources = ARRAY_SIZE(mv643xx_eth_shared_resources),
25 .resource = mv643xx_eth_shared_resources,
28 #define MV_SRAM_BASE 0xfe000000UL
29 #define MV_SRAM_SIZE (256 * 1024)
31 #define MV_SRAM_RXRING_SIZE (MV_SRAM_SIZE / 4)
32 #define MV_SRAM_TXRING_SIZE (MV_SRAM_SIZE / 4)
34 #define MV_SRAM_BASE_ETH0 MV_SRAM_BASE
35 #define MV_SRAM_BASE_ETH1 (MV_SRAM_BASE + (MV_SRAM_SIZE / 2))
37 #define MV64x60_IRQ_ETH_0 48
38 #define MV64x60_IRQ_ETH_1 49
39 #define MV64x60_IRQ_ETH_2 50
41 static struct resource mv64x60_eth0_resources[] = {
44 .start = MV64x60_IRQ_ETH_0,
45 .end = MV64x60_IRQ_ETH_0,
46 .flags = IORESOURCE_IRQ,
50 static struct mv643xx_eth_platform_data eth0_pd = {
53 .tx_sram_addr = MV_SRAM_BASE_ETH0,
54 .tx_sram_size = MV_SRAM_TXRING_SIZE,
55 .tx_queue_size = MV_SRAM_TXRING_SIZE / 16,
57 .rx_sram_addr = MV_SRAM_BASE_ETH0 + MV_SRAM_TXRING_SIZE,
58 .rx_sram_size = MV_SRAM_RXRING_SIZE,
59 .rx_queue_size = MV_SRAM_RXRING_SIZE / 16,
62 static struct platform_device eth0_device = {
63 .name = MV643XX_ETH_NAME,
65 .num_resources = ARRAY_SIZE(mv64x60_eth0_resources),
66 .resource = mv64x60_eth0_resources,
68 .platform_data = ð0_pd,
72 static struct resource mv64x60_eth1_resources[] = {
75 .start = MV64x60_IRQ_ETH_1,
76 .end = MV64x60_IRQ_ETH_1,
77 .flags = IORESOURCE_IRQ,
81 static struct mv643xx_eth_platform_data eth1_pd = {
84 .tx_sram_addr = MV_SRAM_BASE_ETH1,
85 .tx_sram_size = MV_SRAM_TXRING_SIZE,
86 .tx_queue_size = MV_SRAM_TXRING_SIZE / 16,
88 .rx_sram_addr = MV_SRAM_BASE_ETH1 + MV_SRAM_TXRING_SIZE,
89 .rx_sram_size = MV_SRAM_RXRING_SIZE,
90 .rx_queue_size = MV_SRAM_RXRING_SIZE / 16,
93 static struct platform_device eth1_device = {
94 .name = MV643XX_ETH_NAME,
96 .num_resources = ARRAY_SIZE(mv64x60_eth1_resources),
97 .resource = mv64x60_eth1_resources,
99 .platform_data = ð1_pd,
103 static struct resource mv64x60_eth2_resources[] = {
106 .start = MV64x60_IRQ_ETH_2,
107 .end = MV64x60_IRQ_ETH_2,
108 .flags = IORESOURCE_IRQ,
112 static struct mv643xx_eth_platform_data eth2_pd = {
116 static struct platform_device eth2_device = {
117 .name = MV643XX_ETH_NAME,
119 .num_resources = ARRAY_SIZE(mv64x60_eth2_resources),
120 .resource = mv64x60_eth2_resources,
122 .platform_data = ð2_pd,
126 static struct platform_device *mv643xx_eth_pd_devs[] __initdata = {
127 &mv643xx_eth_shared_device,
133 static u8 __init exchange_bit(u8 val, u8 cs)
136 JAGUAR_FPGA_WRITE((val << 2) | cs, EEPROM_MODE);
139 /* turn the clock on */
140 JAGUAR_FPGA_WRITE((val << 2) | cs | 0x2, EEPROM_MODE);
143 /* turn the clock off and read-strobe */
144 JAGUAR_FPGA_WRITE((val << 2) | cs | 0x10, EEPROM_MODE);
146 /* return the data */
147 return (JAGUAR_FPGA_READ(EEPROM_MODE) >> 3) & 0x1;
150 static void __init get_mac(char dest[6])
152 u8 read_opcode[12] = {1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
155 for (i = 0; i < 12; i++)
156 exchange_bit(read_opcode[i], 1);
158 for (j = 0; j < 6; j++) {
160 for (i = 0; i < 8; i++) {
162 dest[j] |= exchange_bit(0, 1);
171 * Copy and increment ethernet MAC address by a small value.
173 * This is useful for systems where the only one MAC address is stored in
174 * non-volatile memory for multiple ports.
176 static inline void eth_mac_add(unsigned char *dst, unsigned char *src,
183 for (i = ETH_ALEN; i >= 0; i--) {
184 dst[i] = src[i] + add;
185 add = dst[i] < src[i]; /* compute carry */
191 static int __init mv643xx_eth_add_pds(void)
193 unsigned char mac[ETH_ALEN];
197 eth_mac_add(eth0_pd.mac_addr, mac, 0);
198 eth_mac_add(eth1_pd.mac_addr, mac, 1);
199 eth_mac_add(eth2_pd.mac_addr, mac, 2);
200 ret = platform_add_devices(mv643xx_eth_pd_devs,
201 ARRAY_SIZE(mv643xx_eth_pd_devs));
206 device_initcall(mv643xx_eth_add_pds);
208 #endif /* defined(CONFIG_MV643XX_ETH) || defined(CONFIG_MV643XX_ETH_MODULE) */