Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
efcce839 FT |
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. | |
1da177e4 LT |
8 | * |
9 | * (C) 1996,1998 by Thomas Bogendoerfer (tsbogend@alpha.franken.de) | |
6aa20a22 | 10 | * |
1da177e4 LT |
11 | * This driver is based on work from Andreas Busse, but most of |
12 | * the code is rewritten. | |
6aa20a22 | 13 | * |
1da177e4 LT |
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> | |
5a0e3ad6 | 25 | #include <linux/gfp.h> |
1da177e4 | 26 | #include <linux/interrupt.h> |
1da177e4 LT |
27 | #include <linux/ioport.h> |
28 | #include <linux/in.h> | |
1da177e4 LT |
29 | #include <linux/string.h> |
30 | #include <linux/delay.h> | |
31 | #include <linux/errno.h> | |
32 | #include <linux/netdevice.h> | |
33 | #include <linux/etherdevice.h> | |
34 | #include <linux/skbuff.h> | |
d052d1be | 35 | #include <linux/platform_device.h> |
efcce839 | 36 | #include <linux/dma-mapping.h> |
5a0e3ad6 | 37 | #include <linux/slab.h> |
1da177e4 LT |
38 | |
39 | #include <asm/bootinfo.h> | |
1da177e4 LT |
40 | #include <asm/pgtable.h> |
41 | #include <asm/io.h> | |
42 | #include <asm/dma.h> | |
43 | #include <asm/jazz.h> | |
44 | #include <asm/jazzdma.h> | |
45 | ||
46 | static char jazz_sonic_string[] = "jazzsonic"; | |
1da177e4 LT |
47 | |
48 | #define SONIC_MEM_SIZE 0x100 | |
49 | ||
1da177e4 LT |
50 | #include "sonic.h" |
51 | ||
52 | /* | |
53 | * Macros to access SONIC registers | |
54 | */ | |
efcce839 | 55 | #define SONIC_READ(reg) (*((volatile unsigned int *)dev->base_addr+reg)) |
1da177e4 LT |
56 | |
57 | #define SONIC_WRITE(reg,val) \ | |
58 | do { \ | |
efcce839 | 59 | *((volatile unsigned int *)dev->base_addr+(reg)) = (val); \ |
1da177e4 LT |
60 | } while (0) |
61 | ||
62 | ||
efcce839 | 63 | /* use 0 for production, 1 for verification, >1 for debug */ |
1da177e4 LT |
64 | #ifdef SONIC_DEBUG |
65 | static unsigned int sonic_debug = SONIC_DEBUG; | |
6aa20a22 | 66 | #else |
1da177e4 LT |
67 | static unsigned int sonic_debug = 1; |
68 | #endif | |
69 | ||
1da177e4 LT |
70 | /* |
71 | * We cannot use station (ethernet) address prefixes to detect the | |
72 | * sonic controller since these are board manufacturer depended. | |
6aa20a22 | 73 | * So we check for known Silicon Revision IDs instead. |
1da177e4 LT |
74 | */ |
75 | static unsigned short known_revisions[] = | |
76 | { | |
77 | 0x04, /* Mips Magnum 4000 */ | |
78 | 0xffff /* end of list */ | |
79 | }; | |
80 | ||
f4d86754 FT |
81 | static int jazzsonic_open(struct net_device* dev) |
82 | { | |
62cd69a1 KV |
83 | int retval; |
84 | ||
d8865d5b | 85 | retval = request_irq(dev->irq, sonic_interrupt, 0, "sonic", dev); |
62cd69a1 KV |
86 | if (retval) { |
87 | printk(KERN_ERR "%s: unable to get IRQ %d.\n", | |
88 | dev->name, dev->irq); | |
89 | return retval; | |
f4d86754 | 90 | } |
62cd69a1 KV |
91 | |
92 | retval = sonic_open(dev); | |
93 | if (retval) | |
94 | free_irq(dev->irq, dev); | |
95 | return retval; | |
f4d86754 FT |
96 | } |
97 | ||
98 | static int jazzsonic_close(struct net_device* dev) | |
99 | { | |
100 | int err; | |
101 | err = sonic_close(dev); | |
102 | free_irq(dev->irq, dev); | |
103 | return err; | |
104 | } | |
105 | ||
502a326f AB |
106 | static const struct net_device_ops sonic_netdev_ops = { |
107 | .ndo_open = jazzsonic_open, | |
108 | .ndo_stop = jazzsonic_close, | |
109 | .ndo_start_xmit = sonic_send_packet, | |
110 | .ndo_get_stats = sonic_get_stats, | |
afc4b13d | 111 | .ndo_set_rx_mode = sonic_multicast_list, |
502a326f AB |
112 | .ndo_tx_timeout = sonic_tx_timeout, |
113 | .ndo_change_mtu = eth_change_mtu, | |
114 | .ndo_validate_addr = eth_validate_addr, | |
115 | .ndo_set_mac_address = eth_mac_addr, | |
116 | }; | |
117 | ||
6980cbe4 | 118 | static int sonic_probe1(struct net_device *dev) |
1da177e4 LT |
119 | { |
120 | static unsigned version_printed; | |
121 | unsigned int silicon_revision; | |
122 | unsigned int val; | |
efcce839 | 123 | struct sonic_local *lp = netdev_priv(dev); |
1da177e4 LT |
124 | int err = -ENODEV; |
125 | int i; | |
126 | ||
efcce839 | 127 | if (!request_mem_region(dev->base_addr, SONIC_MEM_SIZE, jazz_sonic_string)) |
1da177e4 | 128 | return -EBUSY; |
efcce839 | 129 | |
1da177e4 LT |
130 | /* |
131 | * get the Silicon Revision ID. If this is one of the known | |
132 | * one assume that we found a SONIC ethernet controller at | |
133 | * the expected location. | |
134 | */ | |
135 | silicon_revision = SONIC_READ(SONIC_SR); | |
136 | if (sonic_debug > 1) | |
137 | printk("SONIC Silicon Revision = 0x%04x\n",silicon_revision); | |
138 | ||
139 | i = 0; | |
8e95a202 JP |
140 | while (known_revisions[i] != 0xffff && |
141 | known_revisions[i] != silicon_revision) | |
1da177e4 LT |
142 | i++; |
143 | ||
144 | if (known_revisions[i] == 0xffff) { | |
145 | printk("SONIC ethernet controller not found (0x%4x)\n", | |
146 | silicon_revision); | |
147 | goto out; | |
148 | } | |
6aa20a22 | 149 | |
1da177e4 LT |
150 | if (sonic_debug && version_printed++ == 0) |
151 | printk(version); | |
152 | ||
c2313557 KS |
153 | printk(KERN_INFO "%s: Sonic ethernet found at 0x%08lx, ", |
154 | dev_name(lp->device), dev->base_addr); | |
1da177e4 LT |
155 | |
156 | /* | |
157 | * Put the sonic into software reset, then | |
158 | * retrieve and print the ethernet address. | |
159 | */ | |
160 | SONIC_WRITE(SONIC_CMD,SONIC_CR_RST); | |
161 | SONIC_WRITE(SONIC_CEP,0); | |
162 | for (i=0; i<3; i++) { | |
163 | val = SONIC_READ(SONIC_CAP0-i); | |
164 | dev->dev_addr[i*2] = val; | |
165 | dev->dev_addr[i*2+1] = val >> 8; | |
166 | } | |
167 | ||
1da177e4 | 168 | err = -ENOMEM; |
6aa20a22 | 169 | |
1da177e4 | 170 | /* Initialize the device structure. */ |
1da177e4 | 171 | |
efcce839 | 172 | lp->dma_bitmode = SONIC_BITMODE32; |
1da177e4 | 173 | |
efcce839 FT |
174 | /* Allocate the entire chunk of memory for the descriptors. |
175 | Note that this cannot cross a 64K boundary. */ | |
d0320f75 JP |
176 | lp->descriptors = dma_alloc_coherent(lp->device, |
177 | SIZEOF_SONIC_DESC * | |
178 | SONIC_BUS_SCALE(lp->dma_bitmode), | |
179 | &lp->descriptors_laddr, | |
180 | GFP_KERNEL); | |
181 | if (lp->descriptors == NULL) | |
efcce839 | 182 | goto out; |
1da177e4 | 183 | |
efcce839 FT |
184 | /* Now set up the pointers to point to the appropriate places */ |
185 | lp->cda = lp->descriptors; | |
186 | lp->tda = lp->cda + (SIZEOF_SONIC_CDA | |
187 | * SONIC_BUS_SCALE(lp->dma_bitmode)); | |
188 | lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS | |
189 | * SONIC_BUS_SCALE(lp->dma_bitmode)); | |
190 | lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS | |
191 | * SONIC_BUS_SCALE(lp->dma_bitmode)); | |
192 | ||
193 | lp->cda_laddr = lp->descriptors_laddr; | |
194 | lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA | |
195 | * SONIC_BUS_SCALE(lp->dma_bitmode)); | |
196 | lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS | |
197 | * SONIC_BUS_SCALE(lp->dma_bitmode)); | |
198 | lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS | |
199 | * SONIC_BUS_SCALE(lp->dma_bitmode)); | |
200 | ||
502a326f | 201 | dev->netdev_ops = &sonic_netdev_ops; |
1da177e4 LT |
202 | dev->watchdog_timeo = TX_TIMEOUT; |
203 | ||
204 | /* | |
205 | * clear tally counter | |
206 | */ | |
207 | SONIC_WRITE(SONIC_CRCT,0xffff); | |
208 | SONIC_WRITE(SONIC_FAET,0xffff); | |
209 | SONIC_WRITE(SONIC_MPT,0xffff); | |
210 | ||
211 | return 0; | |
1da177e4 | 212 | out: |
c9145a2d | 213 | release_mem_region(dev->base_addr, SONIC_MEM_SIZE); |
1da177e4 LT |
214 | return err; |
215 | } | |
216 | ||
217 | /* | |
218 | * Probe for a SONIC ethernet controller on a Mips Jazz board. | |
219 | * Actually probing is superfluous but we're paranoid. | |
220 | */ | |
6980cbe4 | 221 | static int jazz_sonic_probe(struct platform_device *pdev) |
1da177e4 LT |
222 | { |
223 | struct net_device *dev; | |
224 | struct sonic_local *lp; | |
ed9f0e0b | 225 | struct resource *res; |
1da177e4 | 226 | int err = 0; |
1da177e4 | 227 | |
ed9f0e0b TB |
228 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
229 | if (!res) | |
1da177e4 LT |
230 | return -ENODEV; |
231 | ||
efcce839 | 232 | dev = alloc_etherdev(sizeof(struct sonic_local)); |
1da177e4 LT |
233 | if (!dev) |
234 | return -ENOMEM; | |
235 | ||
efcce839 | 236 | lp = netdev_priv(dev); |
3ae5eaec RK |
237 | lp->device = &pdev->dev; |
238 | SET_NETDEV_DEV(dev, &pdev->dev); | |
4564cba7 | 239 | platform_set_drvdata(pdev, dev); |
efcce839 | 240 | |
1da177e4 | 241 | netdev_boot_setup_check(dev); |
1da177e4 | 242 | |
ed9f0e0b TB |
243 | dev->base_addr = res->start; |
244 | dev->irq = platform_get_irq(pdev, 0); | |
245 | err = sonic_probe1(dev); | |
1da177e4 LT |
246 | if (err) |
247 | goto out; | |
248 | err = register_netdev(dev); | |
249 | if (err) | |
250 | goto out1; | |
251 | ||
e174961c | 252 | printk("%s: MAC %pM IRQ %d\n", dev->name, dev->dev_addr, dev->irq); |
efcce839 | 253 | |
1da177e4 LT |
254 | return 0; |
255 | ||
256 | out1: | |
c9145a2d | 257 | release_mem_region(dev->base_addr, SONIC_MEM_SIZE); |
1da177e4 LT |
258 | out: |
259 | free_netdev(dev); | |
260 | ||
261 | return err; | |
262 | } | |
263 | ||
efcce839 FT |
264 | MODULE_DESCRIPTION("Jazz SONIC ethernet driver"); |
265 | module_param(sonic_debug, int, 0); | |
266 | MODULE_PARM_DESC(sonic_debug, "jazzsonic debug level (1-4)"); | |
72abb461 | 267 | MODULE_ALIAS("platform:jazzsonic"); |
1da177e4 | 268 | |
1da177e4 LT |
269 | #include "sonic.c" |
270 | ||
6980cbe4 | 271 | static int jazz_sonic_device_remove(struct platform_device *pdev) |
1da177e4 | 272 | { |
3ae5eaec | 273 | struct net_device *dev = platform_get_drvdata(pdev); |
efcce839 | 274 | struct sonic_local* lp = netdev_priv(dev); |
1da177e4 | 275 | |
d74472f0 | 276 | unregister_netdev(dev); |
efcce839 FT |
277 | dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode), |
278 | lp->descriptors, lp->descriptors_laddr); | |
c9145a2d | 279 | release_mem_region(dev->base_addr, SONIC_MEM_SIZE); |
d74472f0 | 280 | free_netdev(dev); |
1da177e4 LT |
281 | |
282 | return 0; | |
283 | } | |
284 | ||
3ae5eaec | 285 | static struct platform_driver jazz_sonic_driver = { |
1da177e4 | 286 | .probe = jazz_sonic_probe, |
6980cbe4 | 287 | .remove = jazz_sonic_device_remove, |
3ae5eaec RK |
288 | .driver = { |
289 | .name = jazz_sonic_string, | |
72abb461 | 290 | .owner = THIS_MODULE, |
3ae5eaec | 291 | }, |
1da177e4 | 292 | }; |
efcce839 | 293 | |
db62f684 | 294 | module_platform_driver(jazz_sonic_driver); |