arch/powerpc/include/asm/prom.h

   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 /* CPU OF node matching */
  47 struct device_node *of_get_cpu_node(int cpu, unsigned int *thread);
  48
  49 /* cache lookup */
  50 struct device_node *of_find_next_cache_node(struct device_node *np);
  51
  52 #ifdef CONFIG_NUMA
  53 extern int of_node_to_nid(struct device_node *device);
  54 #else
  55 static inline int of_node_to_nid(struct device_node *device) { return 0; }
  56 #endif
  57 #define of_node_to_nid of_node_to_nid
  58
  59 extern void of_instantiate_rtc(void);
  60
  61 /* The of_drconf_cell struct defines the layout of the LMB array
  62  * specified in the device tree property
  63  * ibm,dynamic-reconfiguration-memory/ibm,dynamic-memory
  64  */
  65 struct of_drconf_cell {
  66         u64     base_addr;
  67         u32     drc_index;
  68         u32     reserved;
  69         u32     aa_index;
  70         u32     flags;
  71 };
  72
  73 #define DRCONF_MEM_ASSIGNED     0x00000008
  74 #define DRCONF_MEM_AI_INVALID   0x00000040
  75 #define DRCONF_MEM_RESERVED     0x00000080
  76
  77 /*
  78  * There are two methods for telling firmware what our capabilities are.
  79  * Newer machines have an "ibm,client-architecture-support" method on the
  80  * root node.  For older machines, we have to call the "process-elf-header"
  81  * method in the /packages/elf-loader node, passing it a fake 32-bit
  82  * ELF header containing a couple of PT_NOTE sections that contain
  83  * structures that contain various information.
  84  */
  85
  86 /* New method - extensible architecture description vector. */
  87
  88 /* Option vector bits - generic bits in byte 1 */
  89 #define OV_IGNORE               0x80    /* ignore this vector */
  90 #define OV_CESSATION_POLICY     0x40    /* halt if unsupported option present*/
  91
  92 /* Option vector 1: processor architectures supported */
  93 #define OV1_PPC_2_00            0x80    /* set if we support PowerPC 2.00 */
  94 #define OV1_PPC_2_01            0x40    /* set if we support PowerPC 2.01 */
  95 #define OV1_PPC_2_02            0x20    /* set if we support PowerPC 2.02 */
  96 #define OV1_PPC_2_03            0x10    /* set if we support PowerPC 2.03 */
  97 #define OV1_PPC_2_04            0x08    /* set if we support PowerPC 2.04 */
  98 #define OV1_PPC_2_05            0x04    /* set if we support PowerPC 2.05 */
  99 #define OV1_PPC_2_06            0x02    /* set if we support PowerPC 2.06 */
 100 #define OV1_PPC_2_07            0x01    /* set if we support PowerPC 2.07 */
 101
 102 /* Option vector 2: Open Firmware options supported */
 103 #define OV2_REAL_MODE           0x20    /* set if we want OF in real mode */
 104
 105 /* Option vector 3: processor options supported */
 106 #define OV3_FP                  0x80    /* floating point */
 107 #define OV3_VMX                 0x40    /* VMX/Altivec */
 108 #define OV3_DFP                 0x20    /* decimal FP */
 109
 110 /* Option vector 4: IBM PAPR implementation */
 111 #define OV4_MIN_ENT_CAP         0x01    /* minimum VP entitled capacity */
 112
 113 /* Option vector 5: PAPR/OF options supported
 114  * These bits are also used in firmware_has_feature() to validate
 115  * the capabilities reported for vector 5 in the device tree so we
 116  * encode the vector index in the define and use the OV5_FEAT()
 117  * and OV5_INDX() macros to extract the desired information.
 118  */
 119 #define OV5_FEAT(x)     ((x) & 0xff)
 120 #define OV5_INDX(x)     ((x) >> 8)
 121 #define OV5_LPAR                0x0280  /* logical partitioning supported */
 122 #define OV5_SPLPAR              0x0240  /* shared-processor LPAR supported */
 123 /* ibm,dynamic-reconfiguration-memory property supported */
 124 #define OV5_DRCONF_MEMORY       0x0220
 125 #define OV5_LARGE_PAGES         0x0210  /* large pages supported */
 126 #define OV5_DONATE_DEDICATE_CPU 0x0202  /* donate dedicated CPU support */
 127 #define OV5_MSI                 0x0201  /* PCIe/MSI support */
 128 #define OV5_CMO                 0x0480  /* Cooperative Memory Overcommitment */
 129 #define OV5_XCMO                0x0440  /* Page Coalescing */
 130 #define OV5_TYPE1_AFFINITY      0x0580  /* Type 1 NUMA affinity */
 131 #define OV5_PFO_HW_RNG          0x0E80  /* PFO Random Number Generator */
 132 #define OV5_PFO_HW_842          0x0E40  /* PFO Compression Accelerator */
 133 #define OV5_PFO_HW_ENCR         0x0E20  /* PFO Encryption Accelerator */
 134 #define OV5_SUB_PROCESSORS      0x0F01  /* 1,2,or 4 Sub-Processors supported */
 135
 136 /* Option Vector 6: IBM PAPR hints */
 137 #define OV6_LINUX               0x02    /* Linux is our OS */
 138
 139 /*
 140  * The architecture vector has an array of PVR mask/value pairs,
 141  * followed by # option vectors - 1, followed by the option vectors.
 142  */
 143 extern unsigned char ibm_architecture_vec[];
 144
 145 /* These includes are put at the bottom because they may contain things
 146  * that are overridden by this file.  Ideally they shouldn't be included
 147  * by this file, but there are a bunch of .c files that currently depend
 148  * on it.  Eventually they will be cleaned up. */
 149 #include <linux/of_fdt.h>
 150 #include <linux/of_address.h>
 151 #include <linux/of_irq.h>
 152 #include <linux/platform_device.h>
 153
 154 #endif /* __KERNEL__ */
 155 #endif /* _POWERPC_PROM_H */