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1/* New Hydra driver using generic 8390 core */
2/* Based on old hydra driver by Topi Kanerva (topi@susanna.oulu.fi) */
3
4/* This file is subject to the terms and conditions of the GNU General */
5/* Public License. See the file COPYING in the main directory of the */
6/* Linux distribution for more details. */
7
8/* Peter De Schrijver (p2@mind.be) */
9/* Oldenburg 2000 */
10
11/* The Amiganet is a Zorro-II board made by Hydra Systems. It contains a */
12/* NS8390 NIC (network interface controller) clone, 16 or 64K on-board RAM */
13/* and 10BASE-2 (thin coax) and AUI connectors. */
14
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 /* First page of TX buffer */
47#define NESM_STOP_PG 0x40 /* Last page +1 of RX ring */
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);
69
70static struct zorro_device_id hydra_zorro_tbl[] = {
71 { ZORRO_PROD_HYDRA_SYSTEMS_AMIGANET },
72 { 0 }
73};
74MODULE_DEVICE_TABLE(zorro, hydra_zorro_tbl);
75
76static struct zorro_driver hydra_driver = {
77 .name = "hydra",
78 .id_table = hydra_zorro_tbl,
79 .probe = hydra_init_one,
80 .remove = hydra_remove_one,
81};
82
83static int hydra_init_one(struct zorro_dev *z,
84 const struct zorro_device_id *ent)
85{
86 int err;
87
88 if (!request_mem_region(z->resource.start, 0x10000, "Hydra"))
89 return -EBUSY;
90 if ((err = hydra_init(z))) {
91 release_mem_region(z->resource.start, 0x10000);
92 return -EBUSY;
93 }
94 return 0;
95}
96
97static const struct net_device_ops hydra_netdev_ops = {
98 .ndo_open = hydra_open,
99 .ndo_stop = hydra_close,
100
101 .ndo_start_xmit = __ei_start_xmit,
102 .ndo_tx_timeout = __ei_tx_timeout,
103 .ndo_get_stats = __ei_get_stats,
104 .ndo_set_rx_mode = __ei_set_multicast_list,
105 .ndo_validate_addr = eth_validate_addr,
106 .ndo_set_mac_address = eth_mac_addr,
107#ifdef CONFIG_NET_POLL_CONTROLLER
108 .ndo_poll_controller = __ei_poll,
109#endif
110};
111
112static int hydra_init(struct zorro_dev *z)
113{
114 struct net_device *dev;
115 unsigned long board = (unsigned long)ZTWO_VADDR(z->resource.start);
116 unsigned long ioaddr = board+HYDRA_NIC_BASE;
117 const char name[] = "NE2000";
118 int start_page, stop_page;
119 u8 macaddr[ETH_ALEN];
120 int j;
121 int err;
122
123 static u32 hydra_offsets[16] = {
124 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e,
125 0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e,
126 };
127
128 dev = ____alloc_ei_netdev(0);
129 if (!dev)
130 return -ENOMEM;
131
132 for (j = 0; j < ETH_ALEN; j++)
133 macaddr[j] = *((u8 *)(board + HYDRA_ADDRPROM + 2*j));
134 eth_hw_addr_set(dev, macaddr);
135
136 /* We must set the 8390 for word mode. */
137 z_writeb(0x4b, ioaddr + NE_EN0_DCFG);
138 start_page = NESM_START_PG;
139 stop_page = NESM_STOP_PG;
140
141 dev->base_addr = ioaddr;
142 dev->irq = IRQ_AMIGA_PORTS;
143
144 /* Install the Interrupt handler */
145 if (request_irq(IRQ_AMIGA_PORTS, __ei_interrupt, IRQF_SHARED, "Hydra Ethernet",
146 dev)) {
147 free_netdev(dev);
148 return -EAGAIN;
149 }
150
151 ei_status.name = name;
152 ei_status.tx_start_page = start_page;
153 ei_status.stop_page = stop_page;
154 ei_status.word16 = 1;
155 ei_status.bigendian = 1;
156
157 ei_status.rx_start_page = start_page + TX_PAGES;
158
159 ei_status.reset_8390 = hydra_reset_8390;
160 ei_status.block_input = hydra_block_input;
161 ei_status.block_output = hydra_block_output;
162 ei_status.get_8390_hdr = hydra_get_8390_hdr;
163 ei_status.reg_offset = hydra_offsets;
164
165 dev->netdev_ops = &hydra_netdev_ops;
166 __NS8390_init(dev, 0);
167
168 err = register_netdev(dev);
169 if (err) {
170 free_irq(IRQ_AMIGA_PORTS, dev);
171 free_netdev(dev);
172 return err;
173 }
174
175 zorro_set_drvdata(z, dev);
176
177 pr_info("%s: Hydra at %pR, address %pM (hydra.c " HYDRA_VERSION ")\n",
178 dev->name, &z->resource, dev->dev_addr);
179
180 return 0;
181}
182
183static int hydra_open(struct net_device *dev)
184{
185 __ei_open(dev);
186 return 0;
187}
188
189static int hydra_close(struct net_device *dev)
190{
191 struct ei_device *ei_local = netdev_priv(dev);
192
193 netif_dbg(ei_local, ifdown, dev, "Shutting down ethercard.\n");
194 __ei_close(dev);
195 return 0;
196}
197
198static void hydra_reset_8390(struct net_device *dev)
199{
200 netdev_info(dev, "Hydra hw reset not there\n");
201}
202
203static void hydra_get_8390_hdr(struct net_device *dev,
204 struct e8390_pkt_hdr *hdr, int ring_page)
205{
206 int nic_base = dev->base_addr;
207 short *ptrs;
208 unsigned long hdr_start= (nic_base-HYDRA_NIC_BASE) +
209 ((ring_page - NESM_START_PG)<<8);
210 ptrs = (short *)hdr;
211
212 *(ptrs++) = z_readw(hdr_start);
213 *((short *)hdr) = WORDSWAP(*((short *)hdr));
214 hdr_start += 2;
215 *(ptrs++) = z_readw(hdr_start);
216 *((short *)hdr+1) = WORDSWAP(*((short *)hdr+1));
217}
218
219static void hydra_block_input(struct net_device *dev, int count,
220 struct sk_buff *skb, int ring_offset)
221{
222 unsigned long nic_base = dev->base_addr;
223 unsigned long mem_base = nic_base - HYDRA_NIC_BASE;
224 unsigned long xfer_start = mem_base + ring_offset - (NESM_START_PG<<8);
225
226 if (count&1)
227 count++;
228
229 if (xfer_start+count > mem_base + (NESM_STOP_PG<<8)) {
230 int semi_count = (mem_base + (NESM_STOP_PG<<8)) - xfer_start;
231
232 z_memcpy_fromio(skb->data,xfer_start,semi_count);
233 count -= semi_count;
234 z_memcpy_fromio(skb->data+semi_count, mem_base, count);
235 } else
236 z_memcpy_fromio(skb->data, xfer_start,count);
237
238}
239
240static void hydra_block_output(struct net_device *dev, int count,
241 const unsigned char *buf, int start_page)
242{
243 unsigned long nic_base = dev->base_addr;
244 unsigned long mem_base = nic_base - HYDRA_NIC_BASE;
245
246 if (count&1)
247 count++;
248
249 z_memcpy_toio(mem_base+((start_page - NESM_START_PG)<<8), buf, count);
250}
251
252static void hydra_remove_one(struct zorro_dev *z)
253{
254 struct net_device *dev = zorro_get_drvdata(z);
255
256 unregister_netdev(dev);
257 free_irq(IRQ_AMIGA_PORTS, dev);
258 release_mem_region(ZTWO_PADDR(dev->base_addr)-HYDRA_NIC_BASE, 0x10000);
259 free_netdev(dev);
260}
261
262static int __init hydra_init_module(void)
263{
264 return zorro_register_driver(&hydra_driver);
265}
266
267static void __exit hydra_cleanup_module(void)
268{
269 zorro_unregister_driver(&hydra_driver);
270}
271
272module_init(hydra_init_module);
273module_exit(hydra_cleanup_module);
274
275MODULE_LICENSE("GPL");