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15#include <linux/module.h>
16#include <linux/kernel.h>
17#include <linux/string.h>
18#include <linux/errno.h>
19#include <linux/ioport.h>
20#include <linux/interrupt.h>
21#include <linux/netdevice.h>
22#include <linux/etherdevice.h>
23#include <linux/skbuff.h>
24#include <linux/init.h>
25#include <linux/bitops.h>
26
27#include <asm/io.h>
28#include <asm/irq.h>
29#include <asm/amigaints.h>
30#include <asm/amigahw.h>
31#include <linux/zorro.h>
32
33#define EI_SHIFT(x) (ei_local->reg_offset[x])
34#define ei_inb(port) in_8(port)
35#define ei_outb(val,port) out_8(port,val)
36#define ei_inb_p(port) in_8(port)
37#define ei_outb_p(val,port) out_8(port,val)
38
39static const char version[] =
40 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
41
42#include "lib8390.c"
43
44#define NE_EN0_DCFG (0x0e*2)
45
46#define NESM_START_PG 0x0
47#define NESM_STOP_PG 0x40
48
49#define HYDRA_NIC_BASE 0xffe1
50#define HYDRA_ADDRPROM 0xffc0
51#define HYDRA_VERSION "v3.0alpha"
52
53#define WORDSWAP(a) ((((a)>>8)&0xff) | ((a)<<8))
54
55
56static int hydra_init_one(struct zorro_dev *z,
57 const struct zorro_device_id *ent);
58static int hydra_init(struct zorro_dev *z);
59static int hydra_open(struct net_device *dev);
60static int hydra_close(struct net_device *dev);
61static void hydra_reset_8390(struct net_device *dev);
62static void hydra_get_8390_hdr(struct net_device *dev,
63 struct e8390_pkt_hdr *hdr, int ring_page);
64static void hydra_block_input(struct net_device *dev, int count,
65 struct sk_buff *skb, int ring_offset);
66static void hydra_block_output(struct net_device *dev, int count,
67 const unsigned char *buf, int start_page);
68static void hydra_remove_one(struct zorro_dev *z);
69static u32 hydra_msg_enable;
70
71static struct zorro_device_id hydra_zorro_tbl[] = {
72 { ZORRO_PROD_HYDRA_SYSTEMS_AMIGANET },
73 { 0 }
74};
75MODULE_DEVICE_TABLE(zorro, hydra_zorro_tbl);
76
77static struct zorro_driver hydra_driver = {
78 .name = "hydra",
79 .id_table = hydra_zorro_tbl,
80 .probe = hydra_init_one,
81 .remove = hydra_remove_one,
82};
83
84static int hydra_init_one(struct zorro_dev *z,
85 const struct zorro_device_id *ent)
86{
87 int err;
88
89 if (!request_mem_region(z->resource.start, 0x10000, "Hydra"))
90 return -EBUSY;
91 if ((err = hydra_init(z))) {
92 release_mem_region(z->resource.start, 0x10000);
93 return -EBUSY;
94 }
95 return 0;
96}
97
98static const struct net_device_ops hydra_netdev_ops = {
99 .ndo_open = hydra_open,
100 .ndo_stop = hydra_close,
101
102 .ndo_start_xmit = __ei_start_xmit,
103 .ndo_tx_timeout = __ei_tx_timeout,
104 .ndo_get_stats = __ei_get_stats,
105 .ndo_set_rx_mode = __ei_set_multicast_list,
106 .ndo_validate_addr = eth_validate_addr,
107 .ndo_set_mac_address = eth_mac_addr,
108#ifdef CONFIG_NET_POLL_CONTROLLER
109 .ndo_poll_controller = __ei_poll,
110#endif
111};
112
113static int hydra_init(struct zorro_dev *z)
114{
115 struct net_device *dev;
116 unsigned long board = (unsigned long)ZTWO_VADDR(z->resource.start);
117 unsigned long ioaddr = board+HYDRA_NIC_BASE;
118 const char name[] = "NE2000";
119 int start_page, stop_page;
120 int j;
121 int err;
122 struct ei_device *ei_local;
123
124 static u32 hydra_offsets[16] = {
125 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e,
126 0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e,
127 };
128
129 dev = ____alloc_ei_netdev(0);
130 if (!dev)
131 return -ENOMEM;
132
133 for (j = 0; j < ETH_ALEN; j++)
134 dev->dev_addr[j] = *((u8 *)(board + HYDRA_ADDRPROM + 2*j));
135
136
137 z_writeb(0x4b, ioaddr + NE_EN0_DCFG);
138 start_page = NESM_START_PG;
139 stop_page = NESM_STOP_PG;
140
141 ei_local = netdev_priv(dev);
142 ei_local->msg_enable = hydra_msg_enable;
143 dev->base_addr = ioaddr;
144 dev->irq = IRQ_AMIGA_PORTS;
145
146
147 if (request_irq(IRQ_AMIGA_PORTS, __ei_interrupt, IRQF_SHARED, "Hydra Ethernet",
148 dev)) {
149 free_netdev(dev);
150 return -EAGAIN;
151 }
152
153 ei_status.name = name;
154 ei_status.tx_start_page = start_page;
155 ei_status.stop_page = stop_page;
156 ei_status.word16 = 1;
157 ei_status.bigendian = 1;
158
159 ei_status.rx_start_page = start_page + TX_PAGES;
160
161 ei_status.reset_8390 = hydra_reset_8390;
162 ei_status.block_input = hydra_block_input;
163 ei_status.block_output = hydra_block_output;
164 ei_status.get_8390_hdr = hydra_get_8390_hdr;
165 ei_status.reg_offset = hydra_offsets;
166
167 dev->netdev_ops = &hydra_netdev_ops;
168 __NS8390_init(dev, 0);
169
170 err = register_netdev(dev);
171 if (err) {
172 free_irq(IRQ_AMIGA_PORTS, dev);
173 free_netdev(dev);
174 return err;
175 }
176
177 zorro_set_drvdata(z, dev);
178
179 pr_info("%s: Hydra at %pR, address %pM (hydra.c " HYDRA_VERSION ")\n",
180 dev->name, &z->resource, dev->dev_addr);
181
182 return 0;
183}
184
185static int hydra_open(struct net_device *dev)
186{
187 __ei_open(dev);
188 return 0;
189}
190
191static int hydra_close(struct net_device *dev)
192{
193 struct ei_device *ei_local = netdev_priv(dev);
194
195 netif_dbg(ei_local, ifdown, dev, "Shutting down ethercard.\n");
196 __ei_close(dev);
197 return 0;
198}
199
200static void hydra_reset_8390(struct net_device *dev)
201{
202 netdev_info(dev, "Hydra hw reset not there\n");
203}
204
205static void hydra_get_8390_hdr(struct net_device *dev,
206 struct e8390_pkt_hdr *hdr, int ring_page)
207{
208 int nic_base = dev->base_addr;
209 short *ptrs;
210 unsigned long hdr_start= (nic_base-HYDRA_NIC_BASE) +
211 ((ring_page - NESM_START_PG)<<8);
212 ptrs = (short *)hdr;
213
214 *(ptrs++) = z_readw(hdr_start);
215 *((short *)hdr) = WORDSWAP(*((short *)hdr));
216 hdr_start += 2;
217 *(ptrs++) = z_readw(hdr_start);
218 *((short *)hdr+1) = WORDSWAP(*((short *)hdr+1));
219}
220
221static void hydra_block_input(struct net_device *dev, int count,
222 struct sk_buff *skb, int ring_offset)
223{
224 unsigned long nic_base = dev->base_addr;
225 unsigned long mem_base = nic_base - HYDRA_NIC_BASE;
226 unsigned long xfer_start = mem_base + ring_offset - (NESM_START_PG<<8);
227
228 if (count&1)
229 count++;
230
231 if (xfer_start+count > mem_base + (NESM_STOP_PG<<8)) {
232 int semi_count = (mem_base + (NESM_STOP_PG<<8)) - xfer_start;
233
234 z_memcpy_fromio(skb->data,xfer_start,semi_count);
235 count -= semi_count;
236 z_memcpy_fromio(skb->data+semi_count, mem_base, count);
237 } else
238 z_memcpy_fromio(skb->data, xfer_start,count);
239
240}
241
242static void hydra_block_output(struct net_device *dev, int count,
243 const unsigned char *buf, int start_page)
244{
245 unsigned long nic_base = dev->base_addr;
246 unsigned long mem_base = nic_base - HYDRA_NIC_BASE;
247
248 if (count&1)
249 count++;
250
251 z_memcpy_toio(mem_base+((start_page - NESM_START_PG)<<8), buf, count);
252}
253
254static void hydra_remove_one(struct zorro_dev *z)
255{
256 struct net_device *dev = zorro_get_drvdata(z);
257
258 unregister_netdev(dev);
259 free_irq(IRQ_AMIGA_PORTS, dev);
260 release_mem_region(ZTWO_PADDR(dev->base_addr)-HYDRA_NIC_BASE, 0x10000);
261 free_netdev(dev);
262}
263
264static int __init hydra_init_module(void)
265{
266 return zorro_register_driver(&hydra_driver);
267}
268
269static void __exit hydra_cleanup_module(void)
270{
271 zorro_unregister_driver(&hydra_driver);
272}
273
274module_init(hydra_init_module);
275module_exit(hydra_cleanup_module);
276
277MODULE_LICENSE("GPL");
278
