NetXen: Adding new device ids.
[linux-2.6] / drivers / net / jazzsonic.c
1 /*
2  * jazzsonic.c
3  *
4  * (C) 2005 Finn Thain
5  *
6  * Converted to DMA API, and (from the mac68k project) introduced
7  * dhd's support for 16-bit cards.
8  *
9  * (C) 1996,1998 by Thomas Bogendoerfer (tsbogend@alpha.franken.de)
10  *
11  * This driver is based on work from Andreas Busse, but most of
12  * the code is rewritten.
13  *
14  * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
15  *
16  * A driver for the onboard Sonic ethernet controller on Mips Jazz
17  * systems (Acer Pica-61, Mips Magnum 4000, Olivetti M700 and
18  * perhaps others, too)
19  */
20
21 #include <linux/kernel.h>
22 #include <linux/module.h>
23 #include <linux/types.h>
24 #include <linux/fcntl.h>
25 #include <linux/interrupt.h>
26 #include <linux/init.h>
27 #include <linux/ioport.h>
28 #include <linux/in.h>
29 #include <linux/slab.h>
30 #include <linux/string.h>
31 #include <linux/delay.h>
32 #include <linux/errno.h>
33 #include <linux/netdevice.h>
34 #include <linux/etherdevice.h>
35 #include <linux/skbuff.h>
36 #include <linux/platform_device.h>
37 #include <linux/dma-mapping.h>
38
39 #include <asm/bootinfo.h>
40 #include <asm/system.h>
41 #include <asm/pgtable.h>
42 #include <asm/io.h>
43 #include <asm/dma.h>
44 #include <asm/jazz.h>
45 #include <asm/jazzdma.h>
46
47 static char jazz_sonic_string[] = "jazzsonic";
48 static struct platform_device *jazz_sonic_device;
49
50 #define SONIC_MEM_SIZE  0x100
51
52 #include "sonic.h"
53
54 /*
55  * Macros to access SONIC registers
56  */
57 #define SONIC_READ(reg) (*((volatile unsigned int *)dev->base_addr+reg))
58
59 #define SONIC_WRITE(reg,val)                                            \
60 do {                                                                    \
61         *((volatile unsigned int *)dev->base_addr+(reg)) = (val);               \
62 } while (0)
63
64
65 /* use 0 for production, 1 for verification, >1 for debug */
66 #ifdef SONIC_DEBUG
67 static unsigned int sonic_debug = SONIC_DEBUG;
68 #else
69 static unsigned int sonic_debug = 1;
70 #endif
71
72 /*
73  * Base address and interrupt of the SONIC controller on JAZZ boards
74  */
75 static struct {
76         unsigned int port;
77         unsigned int irq;
78 } sonic_portlist[] = { {JAZZ_ETHERNET_BASE, JAZZ_ETHERNET_IRQ}, {0, 0}};
79
80 /*
81  * We cannot use station (ethernet) address prefixes to detect the
82  * sonic controller since these are board manufacturer depended.
83  * So we check for known Silicon Revision IDs instead.
84  */
85 static unsigned short known_revisions[] =
86 {
87         0x04,                   /* Mips Magnum 4000 */
88         0xffff                  /* end of list */
89 };
90
91 static int __init sonic_probe1(struct net_device *dev)
92 {
93         static unsigned version_printed;
94         unsigned int silicon_revision;
95         unsigned int val;
96         struct sonic_local *lp = netdev_priv(dev);
97         int err = -ENODEV;
98         int i;
99
100         if (!request_mem_region(dev->base_addr, SONIC_MEM_SIZE, jazz_sonic_string))
101                 return -EBUSY;
102
103         /*
104          * get the Silicon Revision ID. If this is one of the known
105          * one assume that we found a SONIC ethernet controller at
106          * the expected location.
107          */
108         silicon_revision = SONIC_READ(SONIC_SR);
109         if (sonic_debug > 1)
110                 printk("SONIC Silicon Revision = 0x%04x\n",silicon_revision);
111
112         i = 0;
113         while (known_revisions[i] != 0xffff
114                && known_revisions[i] != silicon_revision)
115                 i++;
116
117         if (known_revisions[i] == 0xffff) {
118                 printk("SONIC ethernet controller not found (0x%4x)\n",
119                        silicon_revision);
120                 goto out;
121         }
122
123         if (sonic_debug  &&  version_printed++ == 0)
124                 printk(version);
125
126         printk(KERN_INFO "%s: Sonic ethernet found at 0x%08lx, ", lp->device->bus_id, dev->base_addr);
127
128         /*
129          * Put the sonic into software reset, then
130          * retrieve and print the ethernet address.
131          */
132         SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
133         SONIC_WRITE(SONIC_CEP,0);
134         for (i=0; i<3; i++) {
135                 val = SONIC_READ(SONIC_CAP0-i);
136                 dev->dev_addr[i*2] = val;
137                 dev->dev_addr[i*2+1] = val >> 8;
138         }
139
140         err = -ENOMEM;
141
142         /* Initialize the device structure. */
143
144         lp->dma_bitmode = SONIC_BITMODE32;
145
146         /* Allocate the entire chunk of memory for the descriptors.
147            Note that this cannot cross a 64K boundary. */
148         if ((lp->descriptors = dma_alloc_coherent(lp->device,
149                                 SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
150                                 &lp->descriptors_laddr, GFP_KERNEL)) == NULL) {
151                 printk(KERN_ERR "%s: couldn't alloc DMA memory for descriptors.\n", lp->device->bus_id);
152                 goto out;
153         }
154
155         /* Now set up the pointers to point to the appropriate places */
156         lp->cda = lp->descriptors;
157         lp->tda = lp->cda + (SIZEOF_SONIC_CDA
158                              * SONIC_BUS_SCALE(lp->dma_bitmode));
159         lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
160                              * SONIC_BUS_SCALE(lp->dma_bitmode));
161         lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
162                              * SONIC_BUS_SCALE(lp->dma_bitmode));
163
164         lp->cda_laddr = lp->descriptors_laddr;
165         lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
166                              * SONIC_BUS_SCALE(lp->dma_bitmode));
167         lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
168                              * SONIC_BUS_SCALE(lp->dma_bitmode));
169         lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
170                              * SONIC_BUS_SCALE(lp->dma_bitmode));
171
172         dev->open = sonic_open;
173         dev->stop = sonic_close;
174         dev->hard_start_xmit = sonic_send_packet;
175         dev->get_stats = sonic_get_stats;
176         dev->set_multicast_list = &sonic_multicast_list;
177         dev->tx_timeout = sonic_tx_timeout;
178         dev->watchdog_timeo = TX_TIMEOUT;
179
180         /*
181          * clear tally counter
182          */
183         SONIC_WRITE(SONIC_CRCT,0xffff);
184         SONIC_WRITE(SONIC_FAET,0xffff);
185         SONIC_WRITE(SONIC_MPT,0xffff);
186
187         return 0;
188 out:
189         release_region(dev->base_addr, SONIC_MEM_SIZE);
190         return err;
191 }
192
193 /*
194  * Probe for a SONIC ethernet controller on a Mips Jazz board.
195  * Actually probing is superfluous but we're paranoid.
196  */
197 static int __init jazz_sonic_probe(struct platform_device *pdev)
198 {
199         struct net_device *dev;
200         struct sonic_local *lp;
201         int err = 0;
202         int i;
203
204         /*
205          * Don't probe if we're not running on a Jazz board.
206          */
207         if (mips_machgroup != MACH_GROUP_JAZZ)
208                 return -ENODEV;
209
210         dev = alloc_etherdev(sizeof(struct sonic_local));
211         if (!dev)
212                 return -ENOMEM;
213
214         lp = netdev_priv(dev);
215         lp->device = &pdev->dev;
216         SET_NETDEV_DEV(dev, &pdev->dev);
217         SET_MODULE_OWNER(dev);
218
219         netdev_boot_setup_check(dev);
220
221         if (dev->base_addr >= KSEG0) { /* Check a single specified location. */
222                 err = sonic_probe1(dev);
223         } else if (dev->base_addr != 0) { /* Don't probe at all. */
224                 err = -ENXIO;
225         } else {
226                 for (i = 0; sonic_portlist[i].port; i++) {
227                         dev->base_addr = sonic_portlist[i].port;
228                         dev->irq = sonic_portlist[i].irq;
229                         if (sonic_probe1(dev) == 0)
230                                 break;
231                 }
232                 if (!sonic_portlist[i].port)
233                         err = -ENODEV;
234         }
235         if (err)
236                 goto out;
237         err = register_netdev(dev);
238         if (err)
239                 goto out1;
240
241         printk("%s: MAC ", dev->name);
242         for (i = 0; i < 6; i++) {
243                 printk("%2.2x", dev->dev_addr[i]);
244                 if (i < 5)
245                         printk(":");
246         }
247         printk(" IRQ %d\n", dev->irq);
248
249         return 0;
250
251 out1:
252         release_region(dev->base_addr, SONIC_MEM_SIZE);
253 out:
254         free_netdev(dev);
255
256         return err;
257 }
258
259 MODULE_DESCRIPTION("Jazz SONIC ethernet driver");
260 module_param(sonic_debug, int, 0);
261 MODULE_PARM_DESC(sonic_debug, "jazzsonic debug level (1-4)");
262
263 #define SONIC_IRQ_FLAG IRQF_DISABLED
264
265 #include "sonic.c"
266
267 static int __devexit jazz_sonic_device_remove (struct platform_device *pdev)
268 {
269         struct net_device *dev = platform_get_drvdata(pdev);
270         struct sonic_local* lp = netdev_priv(dev);
271
272         unregister_netdev (dev);
273         dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
274                           lp->descriptors, lp->descriptors_laddr);
275         release_region (dev->base_addr, SONIC_MEM_SIZE);
276         free_netdev (dev);
277
278         return 0;
279 }
280
281 static struct platform_driver jazz_sonic_driver = {
282         .probe  = jazz_sonic_probe,
283         .remove = __devexit_p(jazz_sonic_device_remove),
284         .driver = {
285                 .name   = jazz_sonic_string,
286         },
287 };
288
289 static int __init jazz_sonic_init_module(void)
290 {
291         int err;
292
293         if ((err = platform_driver_register(&jazz_sonic_driver))) {
294                 printk(KERN_ERR "Driver registration failed\n");
295                 return err;
296         }
297
298         jazz_sonic_device = platform_device_alloc(jazz_sonic_string, 0);
299         if (!jazz_sonic_device)
300                 goto out_unregister;
301
302         if (platform_device_add(jazz_sonic_device)) {
303                 platform_device_put(jazz_sonic_device);
304                 jazz_sonic_device = NULL;
305         }
306
307         return 0;
308
309 out_unregister:
310         platform_driver_unregister(&jazz_sonic_driver);
311
312         return -ENOMEM;
313 }
314
315 static void __exit jazz_sonic_cleanup_module(void)
316 {
317         platform_driver_unregister(&jazz_sonic_driver);
318
319         if (jazz_sonic_device) {
320                 platform_device_unregister(jazz_sonic_device);
321                 jazz_sonic_device = NULL;
322         }
323 }
324
325 module_init(jazz_sonic_init_module);
326 module_exit(jazz_sonic_cleanup_module);