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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
efcce839 FT |
3 | * jazzsonic.c |
4 | * | |
5 | * (C) 2005 Finn Thain | |
6 | * | |
7 | * Converted to DMA API, and (from the mac68k project) introduced | |
8 | * dhd's support for 16-bit cards. | |
1da177e4 LT |
9 | * |
10 | * (C) 1996,1998 by Thomas Bogendoerfer (tsbogend@alpha.franken.de) | |
6aa20a22 | 11 | * |
1da177e4 LT |
12 | * This driver is based on work from Andreas Busse, but most of |
13 | * the code is rewritten. | |
6aa20a22 | 14 | * |
1da177e4 LT |
15 | * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de) |
16 | * | |
17 | * A driver for the onboard Sonic ethernet controller on Mips Jazz | |
18 | * systems (Acer Pica-61, Mips Magnum 4000, Olivetti M700 and | |
19 | * perhaps others, too) | |
20 | */ | |
21 | ||
22 | #include <linux/kernel.h> | |
23 | #include <linux/module.h> | |
24 | #include <linux/types.h> | |
25 | #include <linux/fcntl.h> | |
5a0e3ad6 | 26 | #include <linux/gfp.h> |
1da177e4 | 27 | #include <linux/interrupt.h> |
1da177e4 LT |
28 | #include <linux/ioport.h> |
29 | #include <linux/in.h> | |
1da177e4 LT |
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> | |
d052d1be | 36 | #include <linux/platform_device.h> |
efcce839 | 37 | #include <linux/dma-mapping.h> |
5a0e3ad6 | 38 | #include <linux/slab.h> |
1da177e4 LT |
39 | |
40 | #include <asm/bootinfo.h> | |
1da177e4 LT |
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"; | |
1da177e4 LT |
48 | |
49 | #define SONIC_MEM_SIZE 0x100 | |
50 | ||
1da177e4 LT |
51 | #include "sonic.h" |
52 | ||
53 | /* | |
54 | * Macros to access SONIC registers | |
55 | */ | |
efcce839 | 56 | #define SONIC_READ(reg) (*((volatile unsigned int *)dev->base_addr+reg)) |
1da177e4 LT |
57 | |
58 | #define SONIC_WRITE(reg,val) \ | |
59 | do { \ | |
efcce839 | 60 | *((volatile unsigned int *)dev->base_addr+(reg)) = (val); \ |
1da177e4 LT |
61 | } while (0) |
62 | ||
1da177e4 LT |
63 | /* |
64 | * We cannot use station (ethernet) address prefixes to detect the | |
65 | * sonic controller since these are board manufacturer depended. | |
6aa20a22 | 66 | * So we check for known Silicon Revision IDs instead. |
1da177e4 LT |
67 | */ |
68 | static unsigned short known_revisions[] = | |
69 | { | |
70 | 0x04, /* Mips Magnum 4000 */ | |
71 | 0xffff /* end of list */ | |
72 | }; | |
73 | ||
f4d86754 FT |
74 | static int jazzsonic_open(struct net_device* dev) |
75 | { | |
62cd69a1 KV |
76 | int retval; |
77 | ||
d8865d5b | 78 | retval = request_irq(dev->irq, sonic_interrupt, 0, "sonic", dev); |
62cd69a1 KV |
79 | if (retval) { |
80 | printk(KERN_ERR "%s: unable to get IRQ %d.\n", | |
81 | dev->name, dev->irq); | |
82 | return retval; | |
f4d86754 | 83 | } |
62cd69a1 KV |
84 | |
85 | retval = sonic_open(dev); | |
86 | if (retval) | |
87 | free_irq(dev->irq, dev); | |
88 | return retval; | |
f4d86754 FT |
89 | } |
90 | ||
91 | static int jazzsonic_close(struct net_device* dev) | |
92 | { | |
93 | int err; | |
94 | err = sonic_close(dev); | |
95 | free_irq(dev->irq, dev); | |
96 | return err; | |
97 | } | |
98 | ||
502a326f AB |
99 | static const struct net_device_ops sonic_netdev_ops = { |
100 | .ndo_open = jazzsonic_open, | |
101 | .ndo_stop = jazzsonic_close, | |
102 | .ndo_start_xmit = sonic_send_packet, | |
103 | .ndo_get_stats = sonic_get_stats, | |
afc4b13d | 104 | .ndo_set_rx_mode = sonic_multicast_list, |
502a326f | 105 | .ndo_tx_timeout = sonic_tx_timeout, |
502a326f AB |
106 | .ndo_validate_addr = eth_validate_addr, |
107 | .ndo_set_mac_address = eth_mac_addr, | |
108 | }; | |
109 | ||
6980cbe4 | 110 | static int sonic_probe1(struct net_device *dev) |
1da177e4 | 111 | { |
1da177e4 LT |
112 | unsigned int silicon_revision; |
113 | unsigned int val; | |
efcce839 | 114 | struct sonic_local *lp = netdev_priv(dev); |
1da177e4 LT |
115 | int err = -ENODEV; |
116 | int i; | |
117 | ||
efcce839 | 118 | if (!request_mem_region(dev->base_addr, SONIC_MEM_SIZE, jazz_sonic_string)) |
1da177e4 | 119 | return -EBUSY; |
efcce839 | 120 | |
1da177e4 LT |
121 | /* |
122 | * get the Silicon Revision ID. If this is one of the known | |
123 | * one assume that we found a SONIC ethernet controller at | |
124 | * the expected location. | |
125 | */ | |
126 | silicon_revision = SONIC_READ(SONIC_SR); | |
1da177e4 | 127 | i = 0; |
8e95a202 JP |
128 | while (known_revisions[i] != 0xffff && |
129 | known_revisions[i] != silicon_revision) | |
1da177e4 LT |
130 | i++; |
131 | ||
132 | if (known_revisions[i] == 0xffff) { | |
bbc2f23a FT |
133 | pr_info("SONIC ethernet controller not found (0x%4x)\n", |
134 | silicon_revision); | |
1da177e4 LT |
135 | goto out; |
136 | } | |
6aa20a22 | 137 | |
1da177e4 LT |
138 | /* |
139 | * Put the sonic into software reset, then | |
140 | * retrieve and print the ethernet address. | |
141 | */ | |
142 | SONIC_WRITE(SONIC_CMD,SONIC_CR_RST); | |
143 | SONIC_WRITE(SONIC_CEP,0); | |
144 | for (i=0; i<3; i++) { | |
145 | val = SONIC_READ(SONIC_CAP0-i); | |
146 | dev->dev_addr[i*2] = val; | |
147 | dev->dev_addr[i*2+1] = val >> 8; | |
148 | } | |
149 | ||
efcce839 | 150 | lp->dma_bitmode = SONIC_BITMODE32; |
1da177e4 | 151 | |
5d58c21c FT |
152 | err = sonic_alloc_descriptors(dev); |
153 | if (err) | |
efcce839 | 154 | goto out; |
1da177e4 | 155 | |
502a326f | 156 | dev->netdev_ops = &sonic_netdev_ops; |
1da177e4 LT |
157 | dev->watchdog_timeo = TX_TIMEOUT; |
158 | ||
159 | /* | |
160 | * clear tally counter | |
161 | */ | |
162 | SONIC_WRITE(SONIC_CRCT,0xffff); | |
163 | SONIC_WRITE(SONIC_FAET,0xffff); | |
164 | SONIC_WRITE(SONIC_MPT,0xffff); | |
165 | ||
166 | return 0; | |
1da177e4 | 167 | out: |
c9145a2d | 168 | release_mem_region(dev->base_addr, SONIC_MEM_SIZE); |
1da177e4 LT |
169 | return err; |
170 | } | |
171 | ||
172 | /* | |
173 | * Probe for a SONIC ethernet controller on a Mips Jazz board. | |
174 | * Actually probing is superfluous but we're paranoid. | |
175 | */ | |
6980cbe4 | 176 | static int jazz_sonic_probe(struct platform_device *pdev) |
1da177e4 LT |
177 | { |
178 | struct net_device *dev; | |
179 | struct sonic_local *lp; | |
ed9f0e0b | 180 | struct resource *res; |
1da177e4 | 181 | int err = 0; |
1da177e4 | 182 | |
ed9f0e0b TB |
183 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
184 | if (!res) | |
1da177e4 LT |
185 | return -ENODEV; |
186 | ||
efcce839 | 187 | dev = alloc_etherdev(sizeof(struct sonic_local)); |
1da177e4 LT |
188 | if (!dev) |
189 | return -ENOMEM; | |
190 | ||
efcce839 | 191 | lp = netdev_priv(dev); |
3ae5eaec RK |
192 | lp->device = &pdev->dev; |
193 | SET_NETDEV_DEV(dev, &pdev->dev); | |
4564cba7 | 194 | platform_set_drvdata(pdev, dev); |
efcce839 | 195 | |
1da177e4 | 196 | netdev_boot_setup_check(dev); |
1da177e4 | 197 | |
ed9f0e0b TB |
198 | dev->base_addr = res->start; |
199 | dev->irq = platform_get_irq(pdev, 0); | |
200 | err = sonic_probe1(dev); | |
1da177e4 LT |
201 | if (err) |
202 | goto out; | |
bbc2f23a FT |
203 | |
204 | pr_info("SONIC ethernet @%08lx, MAC %pM, IRQ %d\n", | |
205 | dev->base_addr, dev->dev_addr, dev->irq); | |
206 | ||
995b2a65 FT |
207 | sonic_msg_init(dev); |
208 | ||
1da177e4 LT |
209 | err = register_netdev(dev); |
210 | if (err) | |
10e3cc18 | 211 | goto undo_probe1; |
1da177e4 LT |
212 | |
213 | return 0; | |
214 | ||
10e3cc18 CJ |
215 | undo_probe1: |
216 | dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode), | |
217 | lp->descriptors, lp->descriptors_laddr); | |
c9145a2d | 218 | release_mem_region(dev->base_addr, SONIC_MEM_SIZE); |
1da177e4 LT |
219 | out: |
220 | free_netdev(dev); | |
221 | ||
222 | return err; | |
223 | } | |
224 | ||
efcce839 | 225 | MODULE_DESCRIPTION("Jazz SONIC ethernet driver"); |
72abb461 | 226 | MODULE_ALIAS("platform:jazzsonic"); |
1da177e4 | 227 | |
1da177e4 LT |
228 | #include "sonic.c" |
229 | ||
6980cbe4 | 230 | static int jazz_sonic_device_remove(struct platform_device *pdev) |
1da177e4 | 231 | { |
3ae5eaec | 232 | struct net_device *dev = platform_get_drvdata(pdev); |
efcce839 | 233 | struct sonic_local* lp = netdev_priv(dev); |
1da177e4 | 234 | |
d74472f0 | 235 | unregister_netdev(dev); |
efcce839 FT |
236 | dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode), |
237 | lp->descriptors, lp->descriptors_laddr); | |
c9145a2d | 238 | release_mem_region(dev->base_addr, SONIC_MEM_SIZE); |
d74472f0 | 239 | free_netdev(dev); |
1da177e4 LT |
240 | |
241 | return 0; | |
242 | } | |
243 | ||
3ae5eaec | 244 | static struct platform_driver jazz_sonic_driver = { |
1da177e4 | 245 | .probe = jazz_sonic_probe, |
6980cbe4 | 246 | .remove = jazz_sonic_device_remove, |
3ae5eaec RK |
247 | .driver = { |
248 | .name = jazz_sonic_string, | |
249 | }, | |
1da177e4 | 250 | }; |
efcce839 | 251 | |
db62f684 | 252 | module_platform_driver(jazz_sonic_driver); |