| 1 | |
| 2 | |
| 3 | * Virtual EISA root driver.
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| 4 | * Acts as a placeholder if we don't have a proper EISA bridge.
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| 5 | *
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| 6 | * (C) 2003 Marc Zyngier <[email protected]>
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| 7 |
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| 8 |
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| 9 | #include <linux/kernel.h>
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| 10 | #include <linux/platform_device.h>
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| 11 | #include <linux/eisa.h>
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| 12 | #include <linux/module.h>
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| 13 | #include <linux/moduleparam.h>
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| 14 | #include <linux/init.h>
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| 15 |
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| 16 | #if defined(CONFIG_EISA_VLB_PRIMING)
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| 17 | #define EISA_FORCE_PROBE_DEFAULT 1
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| 18 | #else
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| 19 | #define EISA_FORCE_PROBE_DEFAULT 0
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| 20 | #endif
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| 21 |
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| 22 | static int force_probe = EISA_FORCE_PROBE_DEFAULT;
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| 23 | static void virtual_eisa_release (struct device *);
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| 24 |
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| 25 | |
| 26 | * Now use a platform device, since that's the obvious choice.
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| 27 |
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| 28 | static struct platform_device eisa_root_dev = {
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| 29 | .name = "eisa",
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| 30 | .id = 0,
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| 31 | .dev = {
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| 32 | .release = virtual_eisa_release,
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| 33 | },
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| 34 | };
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| 35 |
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| 36 | static struct eisa_root_device eisa_bus_root = {
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| 37 | .dev = &eisa_root_dev.dev,
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| 38 | .bus_base_addr = 0,
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| 39 | .res = &ioport_resource,
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| 40 | .slots = EISA_MAX_SLOTS,
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| 41 | .dma_mask = 0xffffffff,
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| 42 | };
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| 43 |
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| 44 | static void virtual_eisa_release (struct device *dev)
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| 45 | {
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| 46 |
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| 47 | }
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| 48 |
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| 49 | static int __init virtual_eisa_root_init (void)
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| 50 | {
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| 51 | int r;
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| 52 |
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| 53 | if ((r = platform_device_register (&eisa_root_dev)))
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| 54 | return r;
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| 55 |
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| 56 | eisa_bus_root.force_probe = force_probe;
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| 57 |
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| 58 | dev_set_drvdata(&eisa_root_dev.dev, &eisa_bus_root);
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| 59 |
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| 60 | if (eisa_root_register (&eisa_bus_root)) {
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| 61 | |
| 62 | * us. So quietly unregister.
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| 63 | platform_device_unregister (&eisa_root_dev);
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| 64 | return -1;
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| 65 | }
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| 66 |
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| 67 | return 0;
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| 68 | }
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| 69 |
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| 70 | module_param (force_probe, int, 0444);
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| 71 |
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| 72 | device_initcall (virtual_eisa_root_init);
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