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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);
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 .ndo_change_mtu = eth_change_mtu,
109#ifdef CONFIG_NET_POLL_CONTROLLER
110 .ndo_poll_controller = __ei_poll,
111#endif
112};
113
114static int hydra_init(struct zorro_dev *z)
115{
116 struct net_device *dev;
117 unsigned long board = (unsigned long)ZTWO_VADDR(z->resource.start);
118 unsigned long ioaddr = board+HYDRA_NIC_BASE;
119 const char name[] = "NE2000";
120 int start_page, stop_page;
121 int j;
122 int err;
123 struct ei_device *ei_local;
124
125 static u32 hydra_offsets[16] = {
126 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e,
127 0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e,
128 };
129
130 dev = ____alloc_ei_netdev(0);
131 if (!dev)
132 return -ENOMEM;
133
134 for (j = 0; j < ETH_ALEN; j++)
135 dev->dev_addr[j] = *((u8 *)(board + HYDRA_ADDRPROM + 2*j));
136
137 /* We must set the 8390 for word mode. */
138 z_writeb(0x4b, ioaddr + NE_EN0_DCFG);
139 start_page = NESM_START_PG;
140 stop_page = NESM_STOP_PG;
141
142 ei_local = netdev_priv(dev);
143 ei_local->msg_enable = hydra_msg_enable;
144 dev->base_addr = ioaddr;
145 dev->irq = IRQ_AMIGA_PORTS;
146
147 /* Install the Interrupt handler */
148 if (request_irq(IRQ_AMIGA_PORTS, __ei_interrupt, IRQF_SHARED, "Hydra Ethernet",
149 dev)) {
150 free_netdev(dev);
151 return -EAGAIN;
152 }
153
154 ei_status.name = name;
155 ei_status.tx_start_page = start_page;
156 ei_status.stop_page = stop_page;
157 ei_status.word16 = 1;
158 ei_status.bigendian = 1;
159
160 ei_status.rx_start_page = start_page + TX_PAGES;
161
162 ei_status.reset_8390 = hydra_reset_8390;
163 ei_status.block_input = hydra_block_input;
164 ei_status.block_output = hydra_block_output;
165 ei_status.get_8390_hdr = hydra_get_8390_hdr;
166 ei_status.reg_offset = hydra_offsets;
167
168 dev->netdev_ops = &hydra_netdev_ops;
169 __NS8390_init(dev, 0);
170
171 err = register_netdev(dev);
172 if (err) {
173 free_irq(IRQ_AMIGA_PORTS, dev);
174 free_netdev(dev);
175 return err;
176 }
177
178 zorro_set_drvdata(z, dev);
179
180 pr_info("%s: Hydra at %pR, address %pM (hydra.c " HYDRA_VERSION ")\n",
181 dev->name, &z->resource, dev->dev_addr);
182
183 return 0;
184}
185
186static int hydra_open(struct net_device *dev)
187{
188 __ei_open(dev);
189 return 0;
190}
191
192static int hydra_close(struct net_device *dev)
193{
194 struct ei_device *ei_local = netdev_priv(dev);
195
196 netif_dbg(ei_local, ifdown, dev, "Shutting down ethercard.\n");
197 __ei_close(dev);
198 return 0;
199}
200
201static void hydra_reset_8390(struct net_device *dev)
202{
203 netdev_info(dev, "Hydra hw reset not there\n");
204}
205
206static void hydra_get_8390_hdr(struct net_device *dev,
207 struct e8390_pkt_hdr *hdr, int ring_page)
208{
209 int nic_base = dev->base_addr;
210 short *ptrs;
211 unsigned long hdr_start= (nic_base-HYDRA_NIC_BASE) +
212 ((ring_page - NESM_START_PG)<<8);
213 ptrs = (short *)hdr;
214
215 *(ptrs++) = z_readw(hdr_start);
216 *((short *)hdr) = WORDSWAP(*((short *)hdr));
217 hdr_start += 2;
218 *(ptrs++) = z_readw(hdr_start);
219 *((short *)hdr+1) = WORDSWAP(*((short *)hdr+1));
220}
221
222static void hydra_block_input(struct net_device *dev, int count,
223 struct sk_buff *skb, int ring_offset)
224{
225 unsigned long nic_base = dev->base_addr;
226 unsigned long mem_base = nic_base - HYDRA_NIC_BASE;
227 unsigned long xfer_start = mem_base + ring_offset - (NESM_START_PG<<8);
228
229 if (count&1)
230 count++;
231
232 if (xfer_start+count > mem_base + (NESM_STOP_PG<<8)) {
233 int semi_count = (mem_base + (NESM_STOP_PG<<8)) - xfer_start;
234
235 z_memcpy_fromio(skb->data,xfer_start,semi_count);
236 count -= semi_count;
237 z_memcpy_fromio(skb->data+semi_count, mem_base, count);
238 } else
239 z_memcpy_fromio(skb->data, xfer_start,count);
240
241}
242
243static void hydra_block_output(struct net_device *dev, int count,
244 const unsigned char *buf, int start_page)
245{
246 unsigned long nic_base = dev->base_addr;
247 unsigned long mem_base = nic_base - HYDRA_NIC_BASE;
248
249 if (count&1)
250 count++;
251
252 z_memcpy_toio(mem_base+((start_page - NESM_START_PG)<<8), buf, count);
253}
254
255static void hydra_remove_one(struct zorro_dev *z)
256{
257 struct net_device *dev = zorro_get_drvdata(z);
258
259 unregister_netdev(dev);
260 free_irq(IRQ_AMIGA_PORTS, dev);
261 release_mem_region(ZTWO_PADDR(dev->base_addr)-HYDRA_NIC_BASE, 0x10000);
262 free_netdev(dev);
263}
264
265static int __init hydra_init_module(void)
266{
267 return zorro_register_driver(&hydra_driver);
268}
269
270static void __exit hydra_cleanup_module(void)
271{
272 zorro_unregister_driver(&hydra_driver);
273}
274
275module_init(hydra_init_module);
276module_exit(hydra_cleanup_module);
277
278MODULE_LICENSE("GPL");