/* $OpenBSD: cpu.h,v 1.26 2013/06/11 16:42:10 deraadt Exp $ */ /* $NetBSD: cpu.h,v 1.41 2006/01/21 04:24:12 uwe Exp $ */ /*- * Copyright (c) 2002 The NetBSD Foundation, Inc. All rights reserved. * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * William Jolitz. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)cpu.h 5.4 (Berkeley) 5/9/91 */ /* * SH3/SH4 support. * * T.Horiuchi Brains Corp. 5/22/98 */ #ifndef _SH_CPU_H_ #define _SH_CPU_H_ #include #include #ifdef _KERNEL /* * Per-CPU information. */ #include #include struct cpu_info { struct proc *ci_curproc; struct schedstate_percpu ci_schedstate; /* scheduler state */ u_int32_t ci_randseed; #ifdef DIAGNOSTIC int ci_mutex_level; #endif #ifdef GPROF struct gmonparam *ci_gmon; #endif }; extern struct cpu_info cpu_info_store; #define curcpu() (&cpu_info_store) #define cpu_number() 0 #define CPU_IS_PRIMARY(ci) 1 #define CPU_INFO_ITERATOR int #define CPU_INFO_FOREACH(cii, ci) \ for (cii = 0, ci = curcpu(); ci != NULL; ci = NULL) #define CPU_INFO_UNIT(ci) 0 #define MAXCPUS 1 #define cpu_unidle(ci) /* * Arguments to hardclock and gatherstats encapsulate the previous * machine state in an opaque clockframe. */ struct clockframe { int spc; /* program counter at time of interrupt */ int ssr; /* status register at time of interrupt */ int ssp; /* stack pointer at time of interrupt */ }; #define CLKF_USERMODE(cf) (!KERNELMODE((cf)->ssr)) #define CLKF_PC(cf) ((cf)->spc) #define CLKF_INTR(cf) 0 /* XXX */ /* * This is used during profiling to integrate system time. It can safely * assume that the process is resident. */ #define PROC_PC(p) ((p)->p_md.md_regs->tf_spc) #define PROC_STACK(p) ((p)->p_md.md_regs->tf_r15) /* * Preempt the current process if in interrupt from user mode, * or after the current trap/syscall if in system mode. */ #define need_resched(ci) \ do { \ want_resched = 1; \ if (curproc != NULL) \ aston(curproc); \ } while (/*CONSTCOND*/0) #define clear_resched(ci) want_resched = 0 /* * Give a profiling tick to the current process when the user profiling * buffer pages are invalid. On the MIPS, request an ast to send us * through trap, marking the proc as needing a profiling tick. */ #define need_proftick(p) aston(p) /* * Notify the current process (p) that it has a signal pending, * process as soon as possible. */ #define signotify(p) aston(p) #define aston(p) ((p)->p_md.md_astpending = 1) extern int want_resched; /* need_resched() was called */ /* * We need a machine-independent name for this. */ #define DELAY(x) delay(x) #define cpu_idle_enter() do { /* nothing */ } while (0) #define cpu_idle_cycle() __asm volatile("sleep") #define cpu_idle_leave() do { /* nothing */ } while (0) #endif /* _KERNEL */ /* * Logical address space of SH3/SH4 CPU. */ #define SH3_PHYS_MASK 0x1fffffff #define SH3_P0SEG_BASE 0x00000000 /* TLB mapped, also U0SEG */ #define SH3_P0SEG_END 0x7fffffff #define SH3_P1SEG_BASE 0x80000000 /* pa == va */ #define SH3_P1SEG_END 0x9fffffff #define SH3_P2SEG_BASE 0xa0000000 /* pa == va, non-cacheable */ #define SH3_P2SEG_END 0xbfffffff #define SH3_P3SEG_BASE 0xc0000000 /* TLB mapped, kernel mode */ #define SH3_P3SEG_END 0xdfffffff #define SH3_P4SEG_BASE 0xe0000000 /* peripheral space */ #define SH3_P4SEG_END 0xffffffff #define SH3_P1SEG_TO_PHYS(x) ((uint32_t)(x) & SH3_PHYS_MASK) #define SH3_P2SEG_TO_PHYS(x) ((uint32_t)(x) & SH3_PHYS_MASK) #define SH3_PHYS_TO_P1SEG(x) ((uint32_t)(x) | SH3_P1SEG_BASE) #define SH3_PHYS_TO_P2SEG(x) ((uint32_t)(x) | SH3_P2SEG_BASE) #define SH3_P1SEG_TO_P2SEG(x) ((uint32_t)(x) | 0x20000000) #define SH3_P2SEG_TO_P1SEG(x) ((uint32_t)(x) & ~0x20000000) #ifdef _KERNEL #ifndef __lint__ /* * Switch from P1 (cached) to P2 (uncached). This used to be written * using gcc's assigned goto extension, but gcc4 aggressive optimizations * tend to optimize that away under certain circumstances. */ #define RUN_P2 \ do { \ register uint32_t r0 asm("r0"); \ uint32_t pc; \ __asm volatile( \ " mov.l 1f, %1 ;" \ " mova 2f, %0 ;" \ " or %0, %1 ;" \ " jmp @%1 ;" \ " nop ;" \ " .align 2 ;" \ "1: .long 0x20000000;" \ "2:;" \ : "=r"(r0), "=r"(pc)); \ } while (0) /* * Switch from P2 (uncached) back to P1 (cached). We need to be * running on P2 to access cache control, memory-mapped cache and TLB * arrays, etc. and after touching them at least 8 instructinos are * necessary before jumping to P1, so provide that padding here. */ #define RUN_P1 \ do { \ register uint32_t r0 asm("r0"); \ uint32_t pc; \ __asm volatile( \ /*1*/ " mov.l 1f, %1 ;" \ /*2*/ " mova 2f, %0 ;" \ /*3*/ " nop ;" \ /*4*/ " and %0, %1 ;" \ /*5*/ " nop ;" \ /*6*/ " nop ;" \ /*7*/ " nop ;" \ /*8*/ " nop ;" \ " jmp @%1 ;" \ " nop ;" \ " .align 2 ;" \ "1: .long ~0x20000000;" \ "2:;" \ : "=r"(r0), "=r"(pc)); \ } while (0) /* * If RUN_P1 is the last thing we do in a function we can omit it, b/c * we are going to return to a P1 caller anyway, but we still need to * ensure there's at least 8 instructions before jump to P1. */ #define PAD_P1_SWITCH __asm volatile ("nop;nop;nop;nop;nop;nop;nop;nop;") #else /* __lint__ */ #define RUN_P2 do {} while (/* CONSTCOND */ 0) #define RUN_P1 do {} while (/* CONSTCOND */ 0) #define PAD_P1_SWITCH do {} while (/* CONSTCOND */ 0) #endif #endif #if defined(SH4) /* SH4 Processor Version Register */ #define SH4_PVR_ADDR 0xff000030 /* P4 address */ #define SH4_PVR (*(volatile uint32_t *) SH4_PVR_ADDR) #define SH4_PRR_ADDR 0xff000044 /* P4 address */ #define SH4_PRR (*(volatile uint32_t *) SH4_PRR_ADDR) #define SH4_PVR_MASK 0xffffff00 #define SH4_PVR_SH7750 0x04020500 /* SH7750 */ #define SH4_PVR_SH7750S 0x04020600 /* SH7750S */ #define SH4_PVR_SH775xR 0x04050000 /* SH775xR */ #define SH4_PVR_SH7751 0x04110000 /* SH7751 */ #define SH4_PRR_MASK 0xfffffff0 #define SH4_PRR_7750R 0x00000100 /* SH7750R */ #define SH4_PRR_7751R 0x00000110 /* SH7751R */ #endif /* * pull in #defines for kinds of processors */ #include #ifdef _KERNEL void sh_cpu_init(int, int); void sh_startup(void); __dead void cpu_reset(void); /* soft reset */ void _cpu_spin(uint32_t); /* for delay loop. */ void delay(int); struct pcb; void savectx(struct pcb *); struct fpreg; void fpu_save(struct fpreg *); void fpu_restore(struct fpreg *); u_int cpu_dump(int (*)(dev_t, daddr_t, caddr_t, size_t), daddr_t *); u_int cpu_dumpsize(void); void dumpconf(void); void dumpsys(void); #endif /* _KERNEL */ #endif /* !_SH_CPU_H_ */