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 32
- typedef __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 6
- typedef __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_OCTEON
- struct 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)];
- };
- #endif
- typedef struct {
- unsigned long seg;
- } mm_segment_t;
- #define ARCH_MIN_TASKALIGN 8
- struct 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;
|