[net-next-2.6.git] / arch / tile / include / asm / kmap_types.h

/*
 * Copyright 2010 Tilera Corporation. All Rights Reserved.
 *
 *   This program is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU General Public License
 *   as published by the Free Software Foundation, version 2.
 *
 *   This program is distributed in the hope that it will be useful, but
 *   WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
 *   NON INFRINGEMENT.  See the GNU General Public License for
 *   more details.
 */

#ifndef _ASM_TILE_KMAP_TYPES_H
#define _ASM_TILE_KMAP_TYPES_H

/*
 * In 32-bit TILE Linux we have to balance the desire to have a lot of
 * nested atomic mappings with the fact that large page sizes and many
 * processors chew up address space quickly.  In a typical
 * 64-processor, 64KB-page layout build, making KM_TYPE_NR one larger
 * adds 4MB of required address-space.  For now we leave KM_TYPE_NR
 * set to depth 8.
 */
enum km_type {
	KM_TYPE_NR = 8
};

/*
 * We provide dummy definitions of all the stray values that used to be
 * required for kmap_atomic() and no longer are.
 */
enum {
	KM_BOUNCE_READ,
	KM_SKB_SUNRPC_DATA,
	KM_SKB_DATA_SOFTIRQ,
	KM_USER0,
	KM_USER1,
	KM_BIO_SRC_IRQ,
	KM_BIO_DST_IRQ,
	KM_PTE0,
	KM_PTE1,
	KM_IRQ0,
	KM_IRQ1,
	KM_SOFTIRQ0,
	KM_SOFTIRQ1,
	KM_SYNC_ICACHE,
	KM_SYNC_DCACHE,
	KM_UML_USERCOPY,
	KM_IRQ_PTE,
	KM_NMI,
	KM_NMI_PTE,
	KM_KDB
};

#endif /* _ASM_TILE_KMAP_TYPES_H */
Commit	Line	Data
867e359b CM	1	/*
	2	* Copyright 2010 Tilera Corporation. All Rights Reserved.
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation, version 2.
	7	*
	8	* This program is distributed in the hope that it will be useful, but
	9	* WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
	11	* NON INFRINGEMENT. See the GNU General Public License for
	12	* more details.
	13	*/
	14
	15	#ifndef _ASM_TILE_KMAP_TYPES_H
	16	#define _ASM_TILE_KMAP_TYPES_H
	17
	18	/*
38a6f426 CM	19	* In 32-bit TILE Linux we have to balance the desire to have a lot of
	20	* nested atomic mappings with the fact that large page sizes and many
	21	* processors chew up address space quickly. In a typical
	22	* 64-processor, 64KB-page layout build, making KM_TYPE_NR one larger
	23	* adds 4MB of required address-space. For now we leave KM_TYPE_NR
	24	* set to depth 8.
867e359b CM	25	*/
867e359b CM	26	enum km_type {
38a6f426 CM	27	KM_TYPE_NR = 8
	28	};
	29
	30	/*
	31	* We provide dummy definitions of all the stray values that used to be
	32	* required for kmap_atomic() and no longer are.
	33	*/
	34	enum {
867e359b CM	35	KM_BOUNCE_READ,
	36	KM_SKB_SUNRPC_DATA,
	37	KM_SKB_DATA_SOFTIRQ,
	38	KM_USER0,
	39	KM_USER1,
	40	KM_BIO_SRC_IRQ,
38a6f426 CM	41	KM_BIO_DST_IRQ,
	42	KM_PTE0,
	43	KM_PTE1,
867e359b CM	44	KM_IRQ0,
	45	KM_IRQ1,
	46	KM_SOFTIRQ0,
	47	KM_SOFTIRQ1,
38a6f426 CM	48	KM_SYNC_ICACHE,
	49	KM_SYNC_DCACHE,
	50	KM_UML_USERCOPY,
	51	KM_IRQ_PTE,
	52	KM_NMI,
	53	KM_NMI_PTE,
	54	KM_KDB
867e359b CM	55	};
	56
	57	#endif /* _ASM_TILE_KMAP_TYPES_H */