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1da177e4 LT |
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> | |
1da177e4 LT |
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 | ||
8c6270f9 AV |
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 | ||
39 | static const char version[] = | |
40 | "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n"; | |
41 | ||
42 | #include "lib8390.c" | |
1da177e4 LT |
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 | ||
4168ac0e | 56 | static int hydra_init_one(struct zorro_dev *z, |
1da177e4 | 57 | const struct zorro_device_id *ent); |
4168ac0e | 58 | static int hydra_init(struct zorro_dev *z); |
1da177e4 LT |
59 | static int hydra_open(struct net_device *dev); |
60 | static int hydra_close(struct net_device *dev); | |
61 | static void hydra_reset_8390(struct net_device *dev); | |
62 | static void hydra_get_8390_hdr(struct net_device *dev, | |
63 | struct e8390_pkt_hdr *hdr, int ring_page); | |
64 | static void hydra_block_input(struct net_device *dev, int count, | |
65 | struct sk_buff *skb, int ring_offset); | |
66 | static void hydra_block_output(struct net_device *dev, int count, | |
67 | const unsigned char *buf, int start_page); | |
4168ac0e | 68 | static void hydra_remove_one(struct zorro_dev *z); |
c45f812f | 69 | static u32 hydra_msg_enable; |
1da177e4 | 70 | |
4168ac0e | 71 | static struct zorro_device_id hydra_zorro_tbl[] = { |
1da177e4 LT |
72 | { ZORRO_PROD_HYDRA_SYSTEMS_AMIGANET }, |
73 | { 0 } | |
74 | }; | |
bf54a2b3 | 75 | MODULE_DEVICE_TABLE(zorro, hydra_zorro_tbl); |
1da177e4 LT |
76 | |
77 | static struct zorro_driver hydra_driver = { | |
78 | .name = "hydra", | |
79 | .id_table = hydra_zorro_tbl, | |
80 | .probe = hydra_init_one, | |
4168ac0e | 81 | .remove = hydra_remove_one, |
1da177e4 LT |
82 | }; |
83 | ||
4168ac0e | 84 | static int hydra_init_one(struct zorro_dev *z, |
1dd06ae8 | 85 | const struct zorro_device_id *ent) |
1da177e4 LT |
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 | ||
e4213003 | 98 | static const struct net_device_ops hydra_netdev_ops = { |
5618f0d1 SH |
99 | .ndo_open = hydra_open, |
100 | .ndo_stop = hydra_close, | |
101 | ||
0b25e015 GU |
102 | .ndo_start_xmit = __ei_start_xmit, |
103 | .ndo_tx_timeout = __ei_tx_timeout, | |
104 | .ndo_get_stats = __ei_get_stats, | |
afc4b13d | 105 | .ndo_set_rx_mode = __ei_set_multicast_list, |
5618f0d1 | 106 | .ndo_validate_addr = eth_validate_addr, |
0b25e015 | 107 | .ndo_set_mac_address = eth_mac_addr, |
5618f0d1 SH |
108 | .ndo_change_mtu = eth_change_mtu, |
109 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
0b25e015 | 110 | .ndo_poll_controller = __ei_poll, |
5618f0d1 SH |
111 | #endif |
112 | }; | |
113 | ||
4168ac0e | 114 | static int hydra_init(struct zorro_dev *z) |
1da177e4 LT |
115 | { |
116 | struct net_device *dev; | |
6112ea08 | 117 | unsigned long board = (unsigned long)ZTWO_VADDR(z->resource.start); |
1da177e4 LT |
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; | |
c45f812f | 123 | struct ei_device *ei_local; |
1da177e4 LT |
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 | ||
0b25e015 | 130 | dev = ____alloc_ei_netdev(0); |
1da177e4 LT |
131 | if (!dev) |
132 | return -ENOMEM; | |
1da177e4 | 133 | |
104bf3fb | 134 | for (j = 0; j < ETH_ALEN; j++) |
1da177e4 LT |
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 | ||
c45f812f MW |
142 | ei_local = netdev_priv(dev); |
143 | ei_local->msg_enable = hydra_msg_enable; | |
1da177e4 LT |
144 | dev->base_addr = ioaddr; |
145 | dev->irq = IRQ_AMIGA_PORTS; | |
146 | ||
147 | /* Install the Interrupt handler */ | |
8c6270f9 | 148 | if (request_irq(IRQ_AMIGA_PORTS, __ei_interrupt, IRQF_SHARED, "Hydra Ethernet", |
1da177e4 LT |
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 | ||
c061b18d JP |
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; | |
1da177e4 | 166 | ei_status.reg_offset = hydra_offsets; |
1da177e4 | 167 | |
5618f0d1 | 168 | dev->netdev_ops = &hydra_netdev_ops; |
8c6270f9 | 169 | __NS8390_init(dev, 0); |
1da177e4 LT |
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 | ||
c274f291 GU |
180 | pr_info("%s: Hydra at %pR, address %pM (hydra.c " HYDRA_VERSION ")\n", |
181 | dev->name, &z->resource, dev->dev_addr); | |
1da177e4 LT |
182 | |
183 | return 0; | |
184 | } | |
185 | ||
186 | static int hydra_open(struct net_device *dev) | |
187 | { | |
8c6270f9 | 188 | __ei_open(dev); |
1da177e4 LT |
189 | return 0; |
190 | } | |
191 | ||
192 | static int hydra_close(struct net_device *dev) | |
193 | { | |
c45f812f MW |
194 | struct ei_device *ei_local = netdev_priv(dev); |
195 | ||
196 | netif_dbg(ei_local, ifdown, dev, "Shutting down ethercard.\n"); | |
8c6270f9 | 197 | __ei_close(dev); |
1da177e4 LT |
198 | return 0; |
199 | } | |
200 | ||
201 | static void hydra_reset_8390(struct net_device *dev) | |
202 | { | |
c45f812f | 203 | netdev_info(dev, "Hydra hw reset not there\n"); |
1da177e4 LT |
204 | } |
205 | ||
206 | static 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 | ||
222 | static 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 | ||
243 | static 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 | ||
4168ac0e | 255 | static void hydra_remove_one(struct zorro_dev *z) |
1da177e4 LT |
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 | ||
265 | static int __init hydra_init_module(void) | |
266 | { | |
33d8675e | 267 | return zorro_register_driver(&hydra_driver); |
1da177e4 LT |
268 | } |
269 | ||
270 | static void __exit hydra_cleanup_module(void) | |
271 | { | |
272 | zorro_unregister_driver(&hydra_driver); | |
273 | } | |
274 | ||
275 | module_init(hydra_init_module); | |
276 | module_exit(hydra_cleanup_module); | |
277 | ||
278 | MODULE_LICENSE("GPL"); |