Commit | Line | Data |
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f2ec8030 TB |
1 | /* |
2 | * sni_82596.c -- driver for intel 82596 ethernet controller, as | |
3 | * used in older SNI RM machines | |
4 | */ | |
5 | ||
6 | #include <linux/module.h> | |
7 | #include <linux/kernel.h> | |
8 | #include <linux/string.h> | |
9 | #include <linux/errno.h> | |
10 | #include <linux/ioport.h> | |
f2ec8030 TB |
11 | #include <linux/interrupt.h> |
12 | #include <linux/delay.h> | |
13 | #include <linux/netdevice.h> | |
14 | #include <linux/etherdevice.h> | |
15 | #include <linux/skbuff.h> | |
f2ec8030 TB |
16 | #include <linux/types.h> |
17 | #include <linux/bitops.h> | |
18 | #include <linux/platform_device.h> | |
19 | #include <linux/io.h> | |
20 | #include <linux/irq.h> | |
21 | ||
22 | #define SNI_82596_DRIVER_VERSION "SNI RM 82596 driver - Revision: 0.01" | |
23 | ||
24 | static const char sni_82596_string[] = "snirm_82596"; | |
25 | ||
26 | #define DMA_ALLOC dma_alloc_coherent | |
27 | #define DMA_FREE dma_free_coherent | |
28 | #define DMA_WBACK(priv, addr, len) do { } while (0) | |
29 | #define DMA_INV(priv, addr, len) do { } while (0) | |
30 | #define DMA_WBACK_INV(priv, addr, len) do { } while (0) | |
31 | ||
32 | #define SYSBUS 0x00004400 | |
33 | ||
34 | /* big endian CPU, 82596 little endian */ | |
35 | #define SWAP32(x) cpu_to_le32((u32)(x)) | |
36 | #define SWAP16(x) cpu_to_le16((u16)(x)) | |
37 | ||
38 | #define OPT_MPU_16BIT 0x01 | |
39 | ||
40 | #include "lib82596.c" | |
41 | ||
42 | MODULE_AUTHOR("Thomas Bogendoerfer"); | |
43 | MODULE_DESCRIPTION("i82596 driver"); | |
44 | MODULE_LICENSE("GPL"); | |
72abb461 | 45 | MODULE_ALIAS("platform:snirm_82596"); |
f2ec8030 TB |
46 | module_param(i596_debug, int, 0); |
47 | MODULE_PARM_DESC(i596_debug, "82596 debug mask"); | |
48 | ||
49 | static inline void ca(struct net_device *dev) | |
50 | { | |
51 | struct i596_private *lp = netdev_priv(dev); | |
52 | ||
53 | writel(0, lp->ca); | |
54 | } | |
55 | ||
56 | ||
57 | static void mpu_port(struct net_device *dev, int c, dma_addr_t x) | |
58 | { | |
59 | struct i596_private *lp = netdev_priv(dev); | |
60 | ||
61 | u32 v = (u32) (c) | (u32) (x); | |
62 | ||
63 | if (lp->options & OPT_MPU_16BIT) { | |
64 | writew(v & 0xffff, lp->mpu_port); | |
65 | wmb(); /* order writes to MPU port */ | |
66 | udelay(1); | |
67 | writew(v >> 16, lp->mpu_port); | |
68 | } else { | |
69 | writel(v, lp->mpu_port); | |
70 | wmb(); /* order writes to MPU port */ | |
71 | udelay(1); | |
72 | writel(v, lp->mpu_port); | |
73 | } | |
74 | } | |
75 | ||
76 | ||
58b10698 | 77 | static int sni_82596_probe(struct platform_device *dev) |
f2ec8030 TB |
78 | { |
79 | struct net_device *netdevice; | |
80 | struct i596_private *lp; | |
81 | struct resource *res, *ca, *idprom, *options; | |
82 | int retval = -ENOMEM; | |
83 | void __iomem *mpu_addr; | |
84 | void __iomem *ca_addr; | |
85 | u8 __iomem *eth_addr; | |
86 | ||
87 | res = platform_get_resource(dev, IORESOURCE_MEM, 0); | |
88 | ca = platform_get_resource(dev, IORESOURCE_MEM, 1); | |
89 | options = platform_get_resource(dev, 0, 0); | |
90 | idprom = platform_get_resource(dev, IORESOURCE_MEM, 2); | |
91 | if (!res || !ca || !options || !idprom) | |
92 | return -ENODEV; | |
93 | mpu_addr = ioremap_nocache(res->start, 4); | |
94 | if (!mpu_addr) | |
95 | return -ENOMEM; | |
96 | ca_addr = ioremap_nocache(ca->start, 4); | |
97 | if (!ca_addr) | |
98 | goto probe_failed_free_mpu; | |
99 | ||
100 | printk(KERN_INFO "Found i82596 at 0x%x\n", res->start); | |
101 | ||
102 | netdevice = alloc_etherdev(sizeof(struct i596_private)); | |
103 | if (!netdevice) | |
104 | goto probe_failed_free_ca; | |
105 | ||
106 | SET_NETDEV_DEV(netdevice, &dev->dev); | |
107 | platform_set_drvdata (dev, netdevice); | |
108 | ||
109 | netdevice->base_addr = res->start; | |
110 | netdevice->irq = platform_get_irq(dev, 0); | |
111 | ||
112 | eth_addr = ioremap_nocache(idprom->start, 0x10); | |
113 | if (!eth_addr) | |
114 | goto probe_failed; | |
115 | ||
116 | /* someone seems to like messed up stuff */ | |
117 | netdevice->dev_addr[0] = readb(eth_addr + 0x0b); | |
118 | netdevice->dev_addr[1] = readb(eth_addr + 0x0a); | |
119 | netdevice->dev_addr[2] = readb(eth_addr + 0x09); | |
120 | netdevice->dev_addr[3] = readb(eth_addr + 0x08); | |
121 | netdevice->dev_addr[4] = readb(eth_addr + 0x07); | |
122 | netdevice->dev_addr[5] = readb(eth_addr + 0x06); | |
123 | iounmap(eth_addr); | |
124 | ||
125 | if (!netdevice->irq) { | |
126 | printk(KERN_ERR "%s: IRQ not found for i82596 at 0x%lx\n", | |
127 | __FILE__, netdevice->base_addr); | |
128 | goto probe_failed; | |
129 | } | |
130 | ||
131 | lp = netdev_priv(netdevice); | |
132 | lp->options = options->flags & IORESOURCE_BITS; | |
133 | lp->ca = ca_addr; | |
134 | lp->mpu_port = mpu_addr; | |
135 | ||
136 | retval = i82596_probe(netdevice); | |
137 | if (retval == 0) | |
138 | return 0; | |
139 | ||
140 | probe_failed: | |
141 | free_netdev(netdevice); | |
142 | probe_failed_free_ca: | |
143 | iounmap(ca_addr); | |
144 | probe_failed_free_mpu: | |
145 | iounmap(mpu_addr); | |
146 | return retval; | |
147 | } | |
148 | ||
58b10698 | 149 | static int sni_82596_driver_remove(struct platform_device *pdev) |
f2ec8030 TB |
150 | { |
151 | struct net_device *dev = platform_get_drvdata(pdev); | |
152 | struct i596_private *lp = netdev_priv(dev); | |
153 | ||
154 | unregister_netdev(dev); | |
155 | DMA_FREE(dev->dev.parent, sizeof(struct i596_private), | |
156 | lp->dma, lp->dma_addr); | |
157 | iounmap(lp->ca); | |
158 | iounmap(lp->mpu_port); | |
159 | free_netdev (dev); | |
160 | return 0; | |
161 | } | |
162 | ||
163 | static struct platform_driver sni_82596_driver = { | |
164 | .probe = sni_82596_probe, | |
58b10698 | 165 | .remove = sni_82596_driver_remove, |
f2ec8030 TB |
166 | .driver = { |
167 | .name = sni_82596_string, | |
168 | }, | |
169 | }; | |
170 | ||
58b10698 | 171 | static int sni_82596_init(void) |
f2ec8030 TB |
172 | { |
173 | printk(KERN_INFO SNI_82596_DRIVER_VERSION "\n"); | |
174 | return platform_driver_register(&sni_82596_driver); | |
175 | } | |
176 | ||
177 | ||
178 | static void __exit sni_82596_exit(void) | |
179 | { | |
180 | platform_driver_unregister(&sni_82596_driver); | |
181 | } | |
182 | ||
183 | module_init(sni_82596_init); | |
184 | module_exit(sni_82596_exit); |