| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221 | /* * This file is subject to the terms and conditions of the GNU General Public * License.  See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 1994 Waldorf GMBH * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003 Ralf Baechle * Copyright (C) 1996 Paul M. Antoine * Copyright (C) 1999, 2000 Silicon Graphics, Inc. */#ifndef _ASM_PROCESSOR_H#define _ASM_PROCESSOR_H#include <linux/cpumask.h>#include <linux/threads.h>#include <asm/cachectl.h>#include <asm/cpu.h>#include <asm/cpu-info.h>#include <asm/mipsregs.h>#include <asm/prefetch.h>/* * Return current * instruction pointer ("program counter"). */#define current_text_addr() ({ __label__ _l; _l: &&_l;})/* * System setup and hardware flags.. */extern void (*cpu_wait)(void);extern unsigned int vced_count, vcei_count;/* * MIPS does have an arch_pick_mmap_layout() */#define HAVE_ARCH_PICK_MMAP_LAYOUT 1/* * A special page (the vdso) is mapped into all processes at the very * top of the virtual memory space. */#define SPECIAL_PAGES_SIZE PAGE_SIZE#ifdef CONFIG_32BIT/* * User space process size: 2GB. This is hardcoded into a few places, * so don't change it unless you know what you are doing. */#define TASK_SIZE	0x7fff8000UL#ifdef __KERNEL__#define STACK_TOP_MAX	TASK_SIZE#endif#define TASK_IS_32BIT_ADDR 1#endif#ifdef CONFIG_64BIT/* * User space process size: 1TB. This is hardcoded into a few places, * so don't change it unless you know what you are doing.  TASK_SIZE * is limited to 1TB by the R4000 architecture; R10000 and better can * support 16TB; the architectural reserve for future expansion is * 8192EB ... */#define TASK_SIZE32	0x7fff8000UL#define TASK_SIZE64	0x10000000000UL#define TASK_SIZE (test_thread_flag(TIF_32BIT_ADDR) ? TASK_SIZE32 : TASK_SIZE64)#ifdef __KERNEL__#define STACK_TOP_MAX	TASK_SIZE64#endif#define TASK_SIZE_OF(tsk)						\	(test_tsk_thread_flag(tsk, TIF_32BIT_ADDR) ? TASK_SIZE32 : TASK_SIZE64)#define TASK_IS_32BIT_ADDR test_thread_flag(TIF_32BIT_ADDR)#endif#define STACK_TOP	((TASK_SIZE & PAGE_MASK) - SPECIAL_PAGES_SIZE)/* * This decides where the kernel will search for a free chunk of vm * space during mmap's. */#define TASK_UNMAPPED_BASE PAGE_ALIGN(TASK_SIZE / 3)#define NUM_FPU_REGS	32typedef __u64 fpureg_t;/* * It would be nice to add some more fields for emulator statistics, but there * are a number of fixed offsets in offset.h and elsewhere that would have to * be recalculated by hand.  So the additional information will be private to * the FPU emulator for now.  See asm-mips/fpu_emulator.h. */struct mips_fpu_struct {	fpureg_t	fpr[NUM_FPU_REGS];	unsigned int	fcr31;};#define NUM_DSP_REGS   6typedef __u32 dspreg_t;struct mips_dsp_state {	dspreg_t        dspr[NUM_DSP_REGS];	unsigned int    dspcontrol;};#define INIT_CPUMASK { \	{0,} \}struct mips3264_watch_reg_state {	/* The width of watchlo is 32 in a 32 bit kernel and 64 in a	   64 bit kernel.  We use unsigned long as it has the same	   property. */	unsigned long watchlo[NUM_WATCH_REGS];	/* Only the mask and IRW bits from watchhi. */	u16 watchhi[NUM_WATCH_REGS];};union mips_watch_reg_state {	struct mips3264_watch_reg_state mips3264;};#ifdef CONFIG_CPU_CAVIUM_OCTEONstruct octeon_cop2_state {	/* DMFC2 rt, 0x0201 */	unsigned long   cop2_crc_iv;	/* DMFC2 rt, 0x0202 (Set with DMTC2 rt, 0x1202) */	unsigned long   cop2_crc_length;	/* DMFC2 rt, 0x0200 (set with DMTC2 rt, 0x4200) */	unsigned long   cop2_crc_poly;	/* DMFC2 rt, 0x0402; DMFC2 rt, 0x040A */	unsigned long   cop2_llm_dat[2];       /* DMFC2 rt, 0x0084 */	unsigned long   cop2_3des_iv;	/* DMFC2 rt, 0x0080; DMFC2 rt, 0x0081; DMFC2 rt, 0x0082 */	unsigned long   cop2_3des_key[3];	/* DMFC2 rt, 0x0088 (Set with DMTC2 rt, 0x0098) */	unsigned long   cop2_3des_result;	/* DMFC2 rt, 0x0111 (FIXME: Read Pass1 Errata) */	unsigned long   cop2_aes_inp0;	/* DMFC2 rt, 0x0102; DMFC2 rt, 0x0103 */	unsigned long   cop2_aes_iv[2];	/* DMFC2 rt, 0x0104; DMFC2 rt, 0x0105; DMFC2 rt, 0x0106; DMFC2	 * rt, 0x0107 */	unsigned long   cop2_aes_key[4];	/* DMFC2 rt, 0x0110 */	unsigned long   cop2_aes_keylen;	/* DMFC2 rt, 0x0100; DMFC2 rt, 0x0101 */	unsigned long   cop2_aes_result[2];	/* DMFC2 rt, 0x0240; DMFC2 rt, 0x0241; DMFC2 rt, 0x0242; DMFC2	 * rt, 0x0243; DMFC2 rt, 0x0244; DMFC2 rt, 0x0245; DMFC2 rt,	 * 0x0246; DMFC2 rt, 0x0247; DMFC2 rt, 0x0248; DMFC2 rt,	 * 0x0249; DMFC2 rt, 0x024A; DMFC2 rt, 0x024B; DMFC2 rt,	 * 0x024C; DMFC2 rt, 0x024D; DMFC2 rt, 0x024E - Pass2 */	unsigned long   cop2_hsh_datw[15];	/* DMFC2 rt, 0x0250; DMFC2 rt, 0x0251; DMFC2 rt, 0x0252; DMFC2	 * rt, 0x0253; DMFC2 rt, 0x0254; DMFC2 rt, 0x0255; DMFC2 rt,	 * 0x0256; DMFC2 rt, 0x0257 - Pass2 */	unsigned long   cop2_hsh_ivw[8];	/* DMFC2 rt, 0x0258; DMFC2 rt, 0x0259 - Pass2 */	unsigned long   cop2_gfm_mult[2];	/* DMFC2 rt, 0x025E - Pass2 */	unsigned long   cop2_gfm_poly;	/* DMFC2 rt, 0x025A; DMFC2 rt, 0x025B - Pass2 */	unsigned long   cop2_gfm_result[2];};#define INIT_OCTEON_COP2 {0,}struct octeon_cvmseg_state {	unsigned long cvmseg[CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE]			    [cpu_dcache_line_size() / sizeof(unsigned long)];};#endiftypedef struct {	unsigned long seg;} mm_segment_t;#define ARCH_MIN_TASKALIGN	8struct mips_abi;/* * If you change thread_struct remember to change the #defines below too! */struct thread_struct {	/* Saved main processor registers. */	unsigned long reg16;	unsigned long reg17, reg18, reg19, reg20, reg21, reg22, reg23;	unsigned long reg29, reg30, reg31;	/* Saved cp0 stuff. */	unsigned long cp0_status;	/* Saved fpu/fpu emulator stuff. */	struct mips_fpu_struct fpu;#ifdef CONFIG_MIPS_MT_FPAFF	/* Emulated instruction count */	unsigned long emulated_fp;	/* Saved per-thread scheduler affinity mask */	cpumask_t user_cpus_allowed;#endif /* CONFIG_MIPS_MT_FPAFF */	/* Saved state of the DSP ASE, if available. */	struct mips_dsp_state dsp;
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