[mirror_edk2.git] / StdLib / Include / Aarch64 / machine / param.h

/*      $NetBSD: param.h,v 1.13 2010/05/06 19:10:26 joerg Exp $ */\r
\r
/*\r
 * Copyright (c) 1994,1995 Mark Brinicombe.\r
 * All rights reserved.\r
 *\r
 * Redistribution and use in source and binary forms, with or without\r
 * modification, are permitted provided that the following conditions\r
 * are met:\r
 * 1. Redistributions of source code must retain the above copyright\r
 *    notice, this list of conditions and the following disclaimer.\r
 * 2. Redistributions in binary form must reproduce the above copyright\r
 *    notice, this list of conditions and the following disclaimer in the\r
 *    documentation and/or other materials provided with the distribution.\r
 * 3. All advertising materials mentioning features or use of this software\r
 *    must display the following acknowledgement:\r
 *      This product includes software developed by the RiscBSD team.\r
 * 4. The name "RiscBSD" nor the name of the author may be used to\r
 *    endorse or promote products derived from this software without specific\r
 *    prior written permission.\r
 *\r
 * THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED\r
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF\r
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.\r
 * IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,\r
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\r
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR\r
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
 * SUCH DAMAGE.\r
 */\r
\r
#ifndef _AARCH64_PARAM_H_\r
#define _AARCH64_PARAM_H_\r
\r
// TODO: These were based on the ARMv7 version. Verify that it is correct.\r
\r
/*\r
 * Machine dependent constants for all ARM processors\r
 */\r
\r
/*\r
 * For KERNEL code:\r
 *      MACHINE must be defined by the individual port.  This is so that\r
 *      uname returns the correct thing, etc.\r
 *\r
 *      MACHINE_ARCH may be defined by individual ports as a temporary\r
 *      measure while we're finishing the conversion to ELF.\r
 *\r
 * For non-KERNEL code:\r
 *      If ELF, MACHINE and MACHINE_ARCH are forced to "arm/armeb".\r
 */\r
\r
#if defined(_KERNEL)\r
#undef _MACHINE\r
#undef MACHINE\r
#undef _MACHINE_ARCH\r
#undef MACHINE_ARCH\r
#define _MACHINE        aarch64\r
#define MACHINE         "aarch64"\r
#define _MACHINE_ARCH   aarch64\r
#define MACHINE_ARCH    "aarch64"\r
#endif /* !_KERNEL */\r
\r
#define MID_MACHINE     MID_AARCH64\r
\r
/*\r
 * Round p (pointer or byte index) up to a correctly-aligned value\r
 * for all data types (int, long, ...).   The result is u_int and\r
 * must be cast to any desired pointer type.\r
 *\r
 * ALIGNED_POINTER is a boolean macro that checks whether an address\r
 * is valid to fetch data elements of type t from on this architecture.\r
 * This does not reflect the optimal alignment, just the possibility\r
 * (within reasonable limits).\r
 *\r
 */\r
#define ALIGNBYTES              (sizeof(int) - 1)\r
#define ALIGN(p)                (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)\r
#define ALIGNED_POINTER(p,t)    ((((u_long)(p)) & (sizeof(t)-1)) == 0)\r
/* ARM-specific macro to align a stack pointer (downwards). */\r
#define STACKALIGNBYTES         (8 - 1)\r
#define STACKALIGN(p)           ((u_int)(p) &~ STACKALIGNBYTES)\r
\r
#define DEV_BSHIFT      9               /* log2(DEV_BSIZE) */\r
#define DEV_BSIZE       (1 << DEV_BSHIFT)\r
#define BLKDEV_IOSIZE   2048\r
\r
#ifndef MAXPHYS\r
#define MAXPHYS         65536           /* max I/O transfer size */\r
#endif\r
\r
/*\r
 * Constants related to network buffer management.\r
 * MCLBYTES must be no larger than NBPG (the software page size), and,\r
 * on machines that exchange pages of input or output buffers with mbuf\r
 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple\r
 * of the hardware page size.\r
 */\r
#define MSIZE           256             /* size of an mbuf */\r
\r
#ifndef MCLSHIFT\r
#define MCLSHIFT        11              /* convert bytes to m_buf clusters */\r
                                        /* 2K cluster can hold Ether frame */\r
#endif  /* MCLSHIFT */\r
\r
#define MCLBYTES        (1 << MCLSHIFT) /* size of a m_buf cluster */\r
\r
#ifndef NMBCLUSTERS_MAX\r
#define NMBCLUSTERS_MAX (0x2000000 / MCLBYTES)  /* Limit to 64MB for clusters */\r
#endif\r
\r
/*\r
 * Compatibility /dev/zero mapping.\r
 */\r
#ifdef _KERNEL\r
#ifdef COMPAT_16\r
#define COMPAT_ZERODEV(x)       (x == makedev(0, _DEV_ZERO_oARM))\r
#endif\r
#endif /* _KERNEL */\r
\r
#endif /* _AARCH64_PARAM_H_ */\r
Commit	Line	Data
1bbb83b5 HL	1	/* $NetBSD: param.h,v 1.13 2010/05/06 19:10:26 joerg Exp $ */\r
	2	\r
	3	/*\r
	4	* Copyright (c) 1994,1995 Mark Brinicombe.\r
	5	* All rights reserved.\r
	6	*\r
	7	* Redistribution and use in source and binary forms, with or without\r
	8	* modification, are permitted provided that the following conditions\r
	9	* are met:\r
	10	* 1. Redistributions of source code must retain the above copyright\r
	11	* notice, this list of conditions and the following disclaimer.\r
	12	* 2. Redistributions in binary form must reproduce the above copyright\r
	13	* notice, this list of conditions and the following disclaimer in the\r
	14	* documentation and/or other materials provided with the distribution.\r
	15	* 3. All advertising materials mentioning features or use of this software\r
	16	* must display the following acknowledgement:\r
	17	* This product includes software developed by the RiscBSD team.\r
	18	* 4. The name "RiscBSD" nor the name of the author may be used to\r
	19	* endorse or promote products derived from this software without specific\r
	20	* prior written permission.\r
	21	*\r
	22	* THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED\r
	23	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF\r
	24	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.\r
	25	* IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,\r
	26	* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\r
	27	* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR\r
	28	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
	29	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
	30	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
	31	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
	32	* SUCH DAMAGE.\r
	33	*/\r
	34	\r
	35	#ifndef _AARCH64_PARAM_H_\r
	36	#define _AARCH64_PARAM_H_\r
	37	\r
	38	// TODO: These were based on the ARMv7 version. Verify that it is correct.\r
	39	\r
	40	/*\r
	41	* Machine dependent constants for all ARM processors\r
	42	*/\r
	43	\r
	44	/*\r
	45	* For KERNEL code:\r
	46	* MACHINE must be defined by the individual port. This is so that\r
	47	* uname returns the correct thing, etc.\r
	48	*\r
	49	* MACHINE_ARCH may be defined by individual ports as a temporary\r
	50	* measure while we're finishing the conversion to ELF.\r
	51	*\r
	52	* For non-KERNEL code:\r
	53	* If ELF, MACHINE and MACHINE_ARCH are forced to "arm/armeb".\r
	54	*/\r
	55	\r
	56	#if defined(_KERNEL)\r
	57	#undef _MACHINE\r
	58	#undef MACHINE\r
	59	#undef _MACHINE_ARCH\r
	60	#undef MACHINE_ARCH\r
	61	#define _MACHINE aarch64\r
	62	#define MACHINE "aarch64"\r
	63	#define _MACHINE_ARCH aarch64\r
	64	#define MACHINE_ARCH "aarch64"\r
65	#endif /* !_KERNEL */\r
66	\r
67	#define MID_MACHINE MID_AARCH64\r
68	\r
69	/*\r
70	* Round p (pointer or byte index) up to a correctly-aligned value\r
71	* for all data types (int, long, ...). The result is u_int and\r
72	* must be cast to any desired pointer type.\r
73	*\r
74	* ALIGNED_POINTER is a boolean macro that checks whether an address\r
75	* is valid to fetch data elements of type t from on this architecture.\r
76	* This does not reflect the optimal alignment, just the possibility\r
77	* (within reasonable limits).\r
78	*\r
79	*/\r
80	#define ALIGNBYTES (sizeof(int) - 1)\r
81	#define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)\r
82	#define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0)\r
83	/* ARM-specific macro to align a stack pointer (downwards). */\r
84	#define STACKALIGNBYTES (8 - 1)\r
85	#define STACKALIGN(p) ((u_int)(p) &~ STACKALIGNBYTES)\r
86	\r
87	#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */\r
88	#define DEV_BSIZE (1 << DEV_BSHIFT)\r
89	#define BLKDEV_IOSIZE 2048\r
90	\r
91	#ifndef MAXPHYS\r
92	#define MAXPHYS 65536 /* max I/O transfer size */\r
93	#endif\r
94	\r
95	/*\r
96	* Constants related to network buffer management.\r
97	* MCLBYTES must be no larger than NBPG (the software page size), and,\r
98	* on machines that exchange pages of input or output buffers with mbuf\r
99	* clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple\r
100	* of the hardware page size.\r
101	*/\r
102	#define MSIZE 256 /* size of an mbuf */\r
103	\r
104	#ifndef MCLSHIFT\r
105	#define MCLSHIFT 11 /* convert bytes to m_buf clusters */\r
106	/* 2K cluster can hold Ether frame */\r
107	#endif /* MCLSHIFT */\r
108	\r
109	#define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */\r
110	\r
111	#ifndef NMBCLUSTERS_MAX\r
112	#define NMBCLUSTERS_MAX (0x2000000 / MCLBYTES) /* Limit to 64MB for clusters */\r
113	#endif\r
114	\r
115	/*\r
116	* Compatibility /dev/zero mapping.\r
117	*/\r
118	#ifdef _KERNEL\r
119	#ifdef COMPAT_16\r
120	#define COMPAT_ZERODEV(x) (x == makedev(0, _DEV_ZERO_oARM))\r
121	#endif\r
122	#endif /* _KERNEL */\r
123	\r
124	#endif /* _AARCH64_PARAM_H_ */\r