Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * IBM PowerPC Virtual I/O Infrastructure Support. |
| 3 | * |
Stephen Rothwell | f38d87f | 2005-10-24 14:32:35 +1000 | [diff] [blame] | 4 | * Copyright (c) 2003 IBM Corp. |
| 5 | * Dave Engebretsen engebret@us.ibm.com |
| 6 | * Santiago Leon santil@us.ibm.com |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
Stephen Rothwell | f38d87f | 2005-10-24 14:32:35 +1000 | [diff] [blame] | 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License |
| 10 | * as published by the Free Software Foundation; either version |
| 11 | * 2 of the License, or (at your option) any later version. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | */ |
| 13 | |
Stephen Rothwell | f38d87f | 2005-10-24 14:32:35 +1000 | [diff] [blame] | 14 | #ifndef _ASM_POWERPC_VIO_H |
| 15 | #define _ASM_POWERPC_VIO_H |
Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 16 | #ifdef __KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include <linux/init.h> |
| 19 | #include <linux/errno.h> |
| 20 | #include <linux/device.h> |
| 21 | #include <linux/dma-mapping.h> |
Stephen Rothwell | fb120da | 2005-08-17 16:42:59 +1000 | [diff] [blame] | 22 | #include <linux/mod_devicetable.h> |
Stephen Rothwell | 71d276d | 2005-08-17 16:41:44 +1000 | [diff] [blame] | 23 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <asm/hvcall.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include <asm/scatterlist.h> |
Stephen Rothwell | 71d276d | 2005-08-17 16:41:44 +1000 | [diff] [blame] | 26 | |
| 27 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | * Architecture-specific constants for drivers to |
| 29 | * extract attributes of the device using vio_get_attribute() |
Stephen Rothwell | 71d276d | 2005-08-17 16:41:44 +1000 | [diff] [blame] | 30 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #define VETH_MAC_ADDR "local-mac-address" |
| 32 | #define VETH_MCAST_FILTER_SIZE "ibm,mac-address-filters" |
| 33 | |
| 34 | /* End architecture-specific constants */ |
| 35 | |
| 36 | #define h_vio_signal(ua, mode) \ |
| 37 | plpar_hcall_norets(H_VIO_SIGNAL, ua, mode) |
| 38 | |
| 39 | #define VIO_IRQ_DISABLE 0UL |
| 40 | #define VIO_IRQ_ENABLE 1UL |
| 41 | |
Robert Jennings | a90ab95 | 2008-07-24 04:31:33 +1000 | [diff] [blame^] | 42 | /* |
| 43 | * VIO CMO minimum entitlement for all devices and spare entitlement |
| 44 | */ |
| 45 | #define VIO_CMO_MIN_ENT 1562624 |
| 46 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | struct iommu_table; |
| 48 | |
Robert Jennings | a90ab95 | 2008-07-24 04:31:33 +1000 | [diff] [blame^] | 49 | /** |
| 50 | * vio_dev - This structure is used to describe virtual I/O devices. |
| 51 | * |
| 52 | * @desired: set from return of driver's get_desired_dma() function |
| 53 | * @entitled: bytes of IO data that has been reserved for this device. |
| 54 | * @allocated: bytes of IO data currently in use by the device. |
| 55 | * @allocs_failed: number of DMA failures due to insufficient entitlement. |
Stephen Rothwell | 71d276d | 2005-08-17 16:41:44 +1000 | [diff] [blame] | 56 | */ |
| 57 | struct vio_dev { |
Jeremy Kerr | a7f67bd | 2006-07-12 15:35:54 +1000 | [diff] [blame] | 58 | const char *name; |
| 59 | const char *type; |
Stephen Rothwell | 71d276d | 2005-08-17 16:41:44 +1000 | [diff] [blame] | 60 | uint32_t unit_address; |
| 61 | unsigned int irq; |
Robert Jennings | a90ab95 | 2008-07-24 04:31:33 +1000 | [diff] [blame^] | 62 | struct { |
| 63 | size_t desired; |
| 64 | size_t entitled; |
| 65 | size_t allocated; |
| 66 | atomic_t allocs_failed; |
| 67 | } cmo; |
Stephen Rothwell | 71d276d | 2005-08-17 16:41:44 +1000 | [diff] [blame] | 68 | struct device dev; |
| 69 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | struct vio_driver { |
Stephen Rothwell | 71d276d | 2005-08-17 16:41:44 +1000 | [diff] [blame] | 72 | const struct vio_device_id *id_table; |
| 73 | int (*probe)(struct vio_dev *dev, const struct vio_device_id *id); |
| 74 | int (*remove)(struct vio_dev *dev); |
Robert Jennings | a90ab95 | 2008-07-24 04:31:33 +1000 | [diff] [blame^] | 75 | /* A driver must have a get_desired_dma() function to |
| 76 | * be loaded in a CMO environment if it uses DMA. |
| 77 | */ |
| 78 | unsigned long (*get_desired_dma)(struct vio_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | struct device_driver driver; |
| 80 | }; |
| 81 | |
Stephen Rothwell | 71d276d | 2005-08-17 16:41:44 +1000 | [diff] [blame] | 82 | extern int vio_register_driver(struct vio_driver *drv); |
| 83 | extern void vio_unregister_driver(struct vio_driver *drv); |
| 84 | |
Robert Jennings | a90ab95 | 2008-07-24 04:31:33 +1000 | [diff] [blame^] | 85 | extern int vio_cmo_entitlement_update(size_t); |
| 86 | extern void vio_cmo_set_dev_desired(struct vio_dev *viodev, size_t desired); |
| 87 | |
Stephen Rothwell | 71d276d | 2005-08-17 16:41:44 +1000 | [diff] [blame] | 88 | extern void __devinit vio_unregister_device(struct vio_dev *dev); |
| 89 | |
Stephen Rothwell | 71d276d | 2005-08-17 16:41:44 +1000 | [diff] [blame] | 90 | struct device_node; |
| 91 | |
Stephen Rothwell | de7d812 | 2008-02-05 14:15:12 +1100 | [diff] [blame] | 92 | extern struct vio_dev *vio_register_device_node( |
Stephen Rothwell | 71d276d | 2005-08-17 16:41:44 +1000 | [diff] [blame] | 93 | struct device_node *node_vdev); |
Stephen Rothwell | e10fa77 | 2006-04-27 17:18:21 +1000 | [diff] [blame] | 94 | extern const void *vio_get_attribute(struct vio_dev *vdev, char *which, |
Stephen Rothwell | 71d276d | 2005-08-17 16:41:44 +1000 | [diff] [blame] | 95 | int *length); |
Stephen Rothwell | e10fa77 | 2006-04-27 17:18:21 +1000 | [diff] [blame] | 96 | #ifdef CONFIG_PPC_PSERIES |
| 97 | extern struct vio_dev *vio_find_node(struct device_node *vnode); |
Stephen Rothwell | 71d276d | 2005-08-17 16:41:44 +1000 | [diff] [blame] | 98 | extern int vio_enable_interrupts(struct vio_dev *dev); |
| 99 | extern int vio_disable_interrupts(struct vio_dev *dev); |
Stephen Rothwell | 56a4c6e | 2007-07-23 11:55:32 +1000 | [diff] [blame] | 100 | #else |
| 101 | static inline int vio_enable_interrupts(struct vio_dev *dev) |
| 102 | { |
| 103 | return 0; |
| 104 | } |
Stephen Rothwell | 71d276d | 2005-08-17 16:41:44 +1000 | [diff] [blame] | 105 | #endif |
| 106 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | static inline struct vio_driver *to_vio_driver(struct device_driver *drv) |
| 108 | { |
| 109 | return container_of(drv, struct vio_driver, driver); |
| 110 | } |
| 111 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | static inline struct vio_dev *to_vio_dev(struct device *dev) |
| 113 | { |
| 114 | return container_of(dev, struct vio_dev, dev); |
| 115 | } |
| 116 | |
Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 117 | #endif /* __KERNEL__ */ |
Stephen Rothwell | f38d87f | 2005-10-24 14:32:35 +1000 | [diff] [blame] | 118 | #endif /* _ASM_POWERPC_VIO_H */ |