1 #include <linux/of.h> /* linux/of.h gets to determine #include ordering */
2 #ifndef _POWERPC_PROM_H
3 #define _POWERPC_PROM_H
4 #ifdef __KERNEL__
5
6 /*
7 * Definitions for talking to the Open Firmware PROM on
8 * Power Macintosh computers.
9 *
10 * Copyright (C) 1996-2005 Paul Mackerras.
11 *
12 * Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp.
13 *
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version
17 * 2 of the License, or (at your option) any later version.
18 */
19 #include <linux/types.h>
20 #include <asm/irq.h>
21 #include <linux/atomic.h>
22
23 #define HAVE_ARCH_DEVTREE_FIXUPS
24
25 /*
26 * OF address retreival & translation
27 */
28
29 /* Translate a DMA address from device space to CPU space */
30 extern u64 of_translate_dma_address(struct device_node *dev,
31 const __be32 *in_addr);
32
33 #ifdef CONFIG_PCI
34 extern unsigned long pci_address_to_pio(phys_addr_t address);
35 #define pci_address_to_pio pci_address_to_pio
36 #endif /* CONFIG_PCI */
37
38 /* Parse the ibm,dma-window property of an OF node into the busno, phys and
39 * size parameters.
40 */
41 void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop,
42 unsigned long *busno, unsigned long *phys, unsigned long *size);
43
44 extern void kdump_move_device_tree(void);
45
46 /* cache lookup */
47 struct device_node *of_find_next_cache_node(struct device_node *np);
48
49 #ifdef CONFIG_NUMA
50 extern int of_node_to_nid(struct device_node *device);
51 #else
of_node_to_nid(struct device_node * device)52 static inline int of_node_to_nid(struct device_node *device) { return 0; }
53 #endif
54 #define of_node_to_nid of_node_to_nid
55
56 extern void of_instantiate_rtc(void);
57
58 /* The of_drconf_cell struct defines the layout of the LMB array
59 * specified in the device tree property
60 * ibm,dynamic-reconfiguration-memory/ibm,dynamic-memory
61 */
62 struct of_drconf_cell {
63 u64 base_addr;
64 u32 drc_index;
65 u32 reserved;
66 u32 aa_index;
67 u32 flags;
68 };
69
70 #define DRCONF_MEM_ASSIGNED 0x00000008
71 #define DRCONF_MEM_AI_INVALID 0x00000040
72 #define DRCONF_MEM_RESERVED 0x00000080
73
74 /*
75 * There are two methods for telling firmware what our capabilities are.
76 * Newer machines have an "ibm,client-architecture-support" method on the
77 * root node. For older machines, we have to call the "process-elf-header"
78 * method in the /packages/elf-loader node, passing it a fake 32-bit
79 * ELF header containing a couple of PT_NOTE sections that contain
80 * structures that contain various information.
81 */
82
83 /* New method - extensible architecture description vector. */
84
85 /* Option vector bits - generic bits in byte 1 */
86 #define OV_IGNORE 0x80 /* ignore this vector */
87 #define OV_CESSATION_POLICY 0x40 /* halt if unsupported option present*/
88
89 /* Option vector 1: processor architectures supported */
90 #define OV1_PPC_2_00 0x80 /* set if we support PowerPC 2.00 */
91 #define OV1_PPC_2_01 0x40 /* set if we support PowerPC 2.01 */
92 #define OV1_PPC_2_02 0x20 /* set if we support PowerPC 2.02 */
93 #define OV1_PPC_2_03 0x10 /* set if we support PowerPC 2.03 */
94 #define OV1_PPC_2_04 0x08 /* set if we support PowerPC 2.04 */
95 #define OV1_PPC_2_05 0x04 /* set if we support PowerPC 2.05 */
96 #define OV1_PPC_2_06 0x02 /* set if we support PowerPC 2.06 */
97 #define OV1_PPC_2_07 0x01 /* set if we support PowerPC 2.07 */
98
99 /* Option vector 2: Open Firmware options supported */
100 #define OV2_REAL_MODE 0x20 /* set if we want OF in real mode */
101
102 /* Option vector 3: processor options supported */
103 #define OV3_FP 0x80 /* floating point */
104 #define OV3_VMX 0x40 /* VMX/Altivec */
105 #define OV3_DFP 0x20 /* decimal FP */
106
107 /* Option vector 4: IBM PAPR implementation */
108 #define OV4_MIN_ENT_CAP 0x01 /* minimum VP entitled capacity */
109
110 /* Option vector 5: PAPR/OF options supported
111 * These bits are also used in firmware_has_feature() to validate
112 * the capabilities reported for vector 5 in the device tree so we
113 * encode the vector index in the define and use the OV5_FEAT()
114 * and OV5_INDX() macros to extract the desired information.
115 */
116 #define OV5_FEAT(x) ((x) & 0xff)
117 #define OV5_INDX(x) ((x) >> 8)
118 #define OV5_LPAR 0x0280 /* logical partitioning supported */
119 #define OV5_SPLPAR 0x0240 /* shared-processor LPAR supported */
120 /* ibm,dynamic-reconfiguration-memory property supported */
121 #define OV5_DRCONF_MEMORY 0x0220
122 #define OV5_LARGE_PAGES 0x0210 /* large pages supported */
123 #define OV5_DONATE_DEDICATE_CPU 0x0202 /* donate dedicated CPU support */
124 #define OV5_MSI 0x0201 /* PCIe/MSI support */
125 #define OV5_CMO 0x0480 /* Cooperative Memory Overcommitment */
126 #define OV5_XCMO 0x0440 /* Page Coalescing */
127 #define OV5_TYPE1_AFFINITY 0x0580 /* Type 1 NUMA affinity */
128 #define OV5_PRRN 0x0540 /* Platform Resource Reassignment */
129 #define OV5_PFO_HW_RNG 0x0E80 /* PFO Random Number Generator */
130 #define OV5_PFO_HW_842 0x0E40 /* PFO Compression Accelerator */
131 #define OV5_PFO_HW_ENCR 0x0E20 /* PFO Encryption Accelerator */
132 #define OV5_SUB_PROCESSORS 0x0F01 /* 1,2,or 4 Sub-Processors supported */
133
134 /* Option Vector 6: IBM PAPR hints */
135 #define OV6_LINUX 0x02 /* Linux is our OS */
136
137 /*
138 * The architecture vector has an array of PVR mask/value pairs,
139 * followed by # option vectors - 1, followed by the option vectors.
140 */
141 extern unsigned char ibm_architecture_vec[];
142
143 /* These includes are put at the bottom because they may contain things
144 * that are overridden by this file. Ideally they shouldn't be included
145 * by this file, but there are a bunch of .c files that currently depend
146 * on it. Eventually they will be cleaned up. */
147 #include <linux/of_fdt.h>
148 #include <linux/of_address.h>
149 #include <linux/of_irq.h>
150 #include <linux/platform_device.h>
151
152 #endif /* __KERNEL__ */
153 #endif /* _POWERPC_PROM_H */
154