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 = {
51 .tx_sram_addr = MV_SRAM_BASE_ETH0,
52 .tx_sram_size = MV_SRAM_TXRING_SIZE,
53 .tx_queue_size = MV_SRAM_TXRING_SIZE / 16,
55 .rx_sram_addr = MV_SRAM_BASE_ETH0 + MV_SRAM_TXRING_SIZE,
56 .rx_sram_size = MV_SRAM_RXRING_SIZE,
57 .rx_queue_size = MV_SRAM_RXRING_SIZE / 16,
60 static struct platform_device eth0_device = {
61 .name = MV643XX_ETH_NAME,
63 .num_resources = ARRAY_SIZE(mv64x60_eth0_resources),
64 .resource = mv64x60_eth0_resources,
66 .platform_data = ð0_pd,
70 static struct resource mv64x60_eth1_resources[] = {
73 .start = MV64x60_IRQ_ETH_1,
74 .end = MV64x60_IRQ_ETH_1,
75 .flags = IORESOURCE_IRQ,
79 static struct mv643xx_eth_platform_data eth1_pd = {
80 .tx_sram_addr = MV_SRAM_BASE_ETH1,
81 .tx_sram_size = MV_SRAM_TXRING_SIZE,
82 .tx_queue_size = MV_SRAM_TXRING_SIZE / 16,
84 .rx_sram_addr = MV_SRAM_BASE_ETH1 + MV_SRAM_TXRING_SIZE,
85 .rx_sram_size = MV_SRAM_RXRING_SIZE,
86 .rx_queue_size = MV_SRAM_RXRING_SIZE / 16,
89 static struct platform_device eth1_device = {
90 .name = MV643XX_ETH_NAME,
92 .num_resources = ARRAY_SIZE(mv64x60_eth1_resources),
93 .resource = mv64x60_eth1_resources,
95 .platform_data = ð1_pd,
99 static struct resource mv64x60_eth2_resources[] = {
102 .start = MV64x60_IRQ_ETH_2,
103 .end = MV64x60_IRQ_ETH_2,
104 .flags = IORESOURCE_IRQ,
108 static struct mv643xx_eth_platform_data eth2_pd;
110 static struct platform_device eth2_device = {
111 .name = MV643XX_ETH_NAME,
113 .num_resources = ARRAY_SIZE(mv64x60_eth2_resources),
114 .resource = mv64x60_eth2_resources,
116 .platform_data = ð2_pd,
120 static struct platform_device *mv643xx_eth_pd_devs[] __initdata = {
121 &mv643xx_eth_shared_device,
127 static u8 __init exchange_bit(u8 val, u8 cs)
130 JAGUAR_FPGA_WRITE((val << 2) | cs, EEPROM_MODE);
133 /* turn the clock on */
134 JAGUAR_FPGA_WRITE((val << 2) | cs | 0x2, EEPROM_MODE);
137 /* turn the clock off and read-strobe */
138 JAGUAR_FPGA_WRITE((val << 2) | cs | 0x10, EEPROM_MODE);
140 /* return the data */
141 return (JAGUAR_FPGA_READ(EEPROM_MODE) >> 3) & 0x1;
144 static void __init get_mac(char dest[6])
146 u8 read_opcode[12] = {1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
149 for (i = 0; i < 12; i++)
150 exchange_bit(read_opcode[i], 1);
152 for (j = 0; j < 6; j++) {
154 for (i = 0; i < 8; i++) {
156 dest[j] |= exchange_bit(0, 1);
165 * Copy and increment ethernet MAC address by a small value.
167 * This is useful for systems where the only one MAC address is stored in
168 * non-volatile memory for multiple ports.
170 static inline void eth_mac_add(unsigned char *dst, unsigned char *src,
177 for (i = ETH_ALEN; i >= 0; i--) {
178 dst[i] = src[i] + add;
179 add = dst[i] < src[i]; /* compute carry */
185 static int __init mv643xx_eth_add_pds(void)
187 unsigned char mac[ETH_ALEN];
191 eth_mac_add(eth0_pd.mac_addr, mac, 0);
192 eth_mac_add(eth1_pd.mac_addr, mac, 1);
193 eth_mac_add(eth2_pd.mac_addr, mac, 2);
194 ret = platform_add_devices(mv643xx_eth_pd_devs,
195 ARRAY_SIZE(mv643xx_eth_pd_devs));
200 device_initcall(mv643xx_eth_add_pds);
202 #endif /* defined(CONFIG_MV643XX_ETH) || defined(CONFIG_MV643XX_ETH_MODULE) */