ad1e7d285a
Make part of John Birrell's KSE patch permanent.. Specifically, remove: Any reference of the ksegrp structure. This feature was never fully utilised and made things overly complicated. All code in the scheduler that tried to make threaded programs fair to unthreaded programs. Libpthread processes will already do this to some extent and libthr processes already disable it. Also: Since this makes such a big change to the scheduler(s), take the opportunity to rename some structures and elements that had to be moved anyhow. This makes the code a lot more readable. The ULE scheduler compiles again but I have no idea if it works. The 4bsd scheduler still reqires a little cleaning and some functions that now do ALMOST nothing will go away, but I thought I'd do that as a separate commit. Tested by David Xu, and Dan Eischen using libthr and libpthread.
521 lines
15 KiB
C
521 lines
15 KiB
C
/* $NetBSD: hpc_machdep.c,v 1.70 2003/09/16 08:18:22 agc Exp $ */
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/*-
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* Copyright (c) 1994-1998 Mark Brinicombe.
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* Copyright (c) 1994 Brini.
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* All rights reserved.
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*
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* This code is derived from software written for Brini by Mark Brinicombe
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Brini.
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* RiscBSD kernel project
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*
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* machdep.c
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*
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* Machine dependant functions for kernel setup
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*
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* This file needs a lot of work.
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*
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* Created : 17/09/94
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*/
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#include "opt_msgbuf.h"
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#include "opt_ddb.h"
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#define _ARM32_BUS_DMA_PRIVATE
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/sysproto.h>
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#include <sys/signalvar.h>
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#include <sys/imgact.h>
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#include <sys/kernel.h>
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#include <sys/ktr.h>
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#include <sys/linker.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <sys/pcpu.h>
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#include <sys/proc.h>
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#include <sys/ptrace.h>
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#include <sys/cons.h>
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#include <sys/bio.h>
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#include <sys/bus.h>
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#include <sys/buf.h>
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#include <sys/exec.h>
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#include <sys/kdb.h>
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#include <sys/msgbuf.h>
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#include <machine/reg.h>
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#include <machine/cpu.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <vm/vm.h>
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#include <vm/vm_object.h>
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#include <vm/vm_page.h>
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#include <vm/vm_pager.h>
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#include <vm/vm_map.h>
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#include <vm/vnode_pager.h>
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#include <machine/pmap.h>
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#include <machine/vmparam.h>
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#include <machine/pcb.h>
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#include <machine/undefined.h>
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#include <machine/machdep.h>
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#include <machine/metadata.h>
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#include <machine/armreg.h>
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#include <machine/bus.h>
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#include <sys/reboot.h>
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#include <arm/xscale/i80321/i80321reg.h>
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#include <arm/xscale/i80321/i80321var.h>
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#include <arm/xscale/i80321/iq80321reg.h>
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#include <arm/xscale/i80321/obiovar.h>
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#define KERNEL_PT_SYS 0 /* Page table for mapping proc0 zero page */
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#define KERNEL_PT_IOPXS 1
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#define KERNEL_PT_BEFOREKERN 2
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#define KERNEL_PT_AFKERNEL 3 /* L2 table for mapping after kernel */
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#define KERNEL_PT_AFKERNEL_NUM 9
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/* this should be evenly divisable by PAGE_SIZE / L2_TABLE_SIZE_REAL (or 4) */
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#define NUM_KERNEL_PTS (KERNEL_PT_AFKERNEL + KERNEL_PT_AFKERNEL_NUM)
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/* Define various stack sizes in pages */
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#define IRQ_STACK_SIZE 1
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#define ABT_STACK_SIZE 1
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#ifdef IPKDB
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#define UND_STACK_SIZE 2
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#else
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#define UND_STACK_SIZE 1
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#endif
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extern u_int data_abort_handler_address;
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extern u_int prefetch_abort_handler_address;
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extern u_int undefined_handler_address;
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struct pv_addr kernel_pt_table[NUM_KERNEL_PTS];
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extern void *_end;
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extern vm_offset_t sa1_cache_clean_addr;
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extern int *end;
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struct pcpu __pcpu;
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struct pcpu *pcpup = &__pcpu;
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/* Physical and virtual addresses for some global pages */
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vm_paddr_t phys_avail[10];
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vm_paddr_t dump_avail[4];
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vm_offset_t physical_pages;
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vm_offset_t clean_sva, clean_eva;
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struct pv_addr systempage;
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struct pv_addr msgbufpv;
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struct pv_addr irqstack;
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struct pv_addr undstack;
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struct pv_addr abtstack;
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struct pv_addr kernelstack;
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struct pv_addr minidataclean;
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static struct trapframe proc0_tf;
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/* #define IQ80321_OBIO_BASE 0xfe800000UL */
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/* #define IQ80321_OBIO_SIZE 0x00100000UL */
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/* Static device mappings. */
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static const struct pmap_devmap ep80219_devmap[] = {
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/*
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* Map the on-board devices VA == PA so that we can access them
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* with the MMU on or off.
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*/
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{
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IQ80321_OBIO_BASE,
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IQ80321_OBIO_BASE,
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IQ80321_OBIO_SIZE,
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VM_PROT_READ|VM_PROT_WRITE,
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PTE_NOCACHE,
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},
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{
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IQ80321_IOW_VBASE,
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VERDE_OUT_XLATE_IO_WIN0_BASE,
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VERDE_OUT_XLATE_IO_WIN_SIZE,
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VM_PROT_READ|VM_PROT_WRITE,
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PTE_NOCACHE,
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},
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{
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IQ80321_80321_VBASE,
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VERDE_PMMR_BASE,
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VERDE_PMMR_SIZE,
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VM_PROT_READ|VM_PROT_WRITE,
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PTE_NOCACHE,
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},
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{
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0,
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0,
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0,
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0,
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0,
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}
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};
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#ifdef DDB
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extern vm_offset_t ksym_start, ksym_end;
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#endif
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extern vm_offset_t xscale_cache_clean_addr;
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void *
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initarm(void *arg, void *arg2)
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{
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struct pv_addr kernel_l1pt;
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int loop;
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u_int l1pagetable;
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vm_offset_t freemempos;
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vm_offset_t freemem_pt;
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vm_offset_t afterkern;
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vm_offset_t freemem_after;
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vm_offset_t lastaddr;
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#ifdef DDB
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vm_offset_t zstart = 0, zend = 0;
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#endif
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int i = 0;
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uint32_t fake_preload[35];
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uint32_t memsize, memstart;
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i = 0;
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set_cpufuncs();
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fake_preload[i++] = MODINFO_NAME;
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fake_preload[i++] = strlen("elf kernel") + 1;
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strcpy((char*)&fake_preload[i++], "elf kernel");
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i += 2;
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fake_preload[i++] = MODINFO_TYPE;
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fake_preload[i++] = strlen("elf kernel") + 1;
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strcpy((char*)&fake_preload[i++], "elf kernel");
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i += 2;
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fake_preload[i++] = MODINFO_ADDR;
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fake_preload[i++] = sizeof(vm_offset_t);
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fake_preload[i++] = KERNBASE + 0x00200000;
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fake_preload[i++] = MODINFO_SIZE;
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fake_preload[i++] = sizeof(uint32_t);
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fake_preload[i++] = (uint32_t)&end - KERNBASE - 0x00200000;
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#ifdef DDB
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if (*(uint32_t *)KERNVIRTADDR == MAGIC_TRAMP_NUMBER) {
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fake_preload[i++] = MODINFO_METADATA|MODINFOMD_SSYM;
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fake_preload[i++] = sizeof(vm_offset_t);
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fake_preload[i++] = *(uint32_t *)(KERNVIRTADDR + 4);
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fake_preload[i++] = MODINFO_METADATA|MODINFOMD_ESYM;
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fake_preload[i++] = sizeof(vm_offset_t);
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fake_preload[i++] = *(uint32_t *)(KERNVIRTADDR + 8);
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lastaddr = *(uint32_t *)(KERNVIRTADDR + 8);
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zend = lastaddr;
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zstart = *(uint32_t *)(KERNVIRTADDR + 4);
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ksym_start = zstart;
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ksym_end = zend;
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} else
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#endif
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lastaddr = (vm_offset_t)&end;
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fake_preload[i++] = 0;
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fake_preload[i] = 0;
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preload_metadata = (void *)fake_preload;
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pcpu_init(pcpup, 0, sizeof(struct pcpu));
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PCPU_SET(curthread, &thread0);
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#define KERNEL_TEXT_BASE (KERNBASE + 0x00200000)
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freemempos = 0xa0200000;
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/* Define a macro to simplify memory allocation */
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#define valloc_pages(var, np) \
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alloc_pages((var).pv_pa, (np)); \
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(var).pv_va = (var).pv_pa + 0x20000000;
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#define alloc_pages(var, np) \
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freemempos -= (np * PAGE_SIZE); \
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(var) = freemempos; \
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memset((char *)(var), 0, ((np) * PAGE_SIZE));
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while (((freemempos - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) != 0)
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freemempos -= PAGE_SIZE;
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valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE);
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for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) {
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if (!(loop % (PAGE_SIZE / L2_TABLE_SIZE_REAL))) {
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valloc_pages(kernel_pt_table[loop],
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L2_TABLE_SIZE / PAGE_SIZE);
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} else {
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kernel_pt_table[loop].pv_pa = freemempos +
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(loop % (PAGE_SIZE / L2_TABLE_SIZE_REAL)) *
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L2_TABLE_SIZE_REAL;
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kernel_pt_table[loop].pv_va =
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kernel_pt_table[loop].pv_pa + 0x20000000;
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}
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i++;
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}
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freemem_pt = freemempos;
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freemempos = 0xa0100000;
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/*
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* Allocate a page for the system page mapped to V0x00000000
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* This page will just contain the system vectors and can be
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* shared by all processes.
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*/
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valloc_pages(systempage, 1);
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/* Allocate stacks for all modes */
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valloc_pages(irqstack, IRQ_STACK_SIZE);
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valloc_pages(abtstack, ABT_STACK_SIZE);
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valloc_pages(undstack, UND_STACK_SIZE);
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valloc_pages(kernelstack, KSTACK_PAGES);
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alloc_pages(minidataclean.pv_pa, 1);
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valloc_pages(msgbufpv, round_page(MSGBUF_SIZE) / PAGE_SIZE);
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#ifdef ARM_USE_SMALL_ALLOC
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freemempos -= PAGE_SIZE;
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freemem_pt = trunc_page(freemem_pt);
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freemem_after = freemempos - ((freemem_pt - 0xa0100000) /
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PAGE_SIZE) * sizeof(struct arm_small_page);
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arm_add_smallalloc_pages((void *)(freemem_after + 0x20000000)
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, (void *)0xc0100000, freemem_pt - 0xa0100000, 1);
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freemem_after -= ((freemem_after - 0xa0001000) / PAGE_SIZE) *
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sizeof(struct arm_small_page);
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arm_add_smallalloc_pages((void *)(freemem_after + 0x20000000),
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(void *)0xc0001000,
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trunc_page(freemem_after) - 0xa0001000, 0);
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freemempos = trunc_page(freemem_after);
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freemempos -= PAGE_SIZE;
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#endif
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/*
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* Allocate memory for the l1 and l2 page tables. The scheme to avoid
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* wasting memory by allocating the l1pt on the first 16k memory was
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* taken from NetBSD rpc_machdep.c. NKPT should be greater than 12 for
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* this to work (which is supposed to be the case).
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*/
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/*
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* Now we start construction of the L1 page table
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* We start by mapping the L2 page tables into the L1.
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* This means that we can replace L1 mappings later on if necessary
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*/
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l1pagetable = kernel_l1pt.pv_va;
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/* Map the L2 pages tables in the L1 page table */
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pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH & ~(0x00100000 - 1),
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&kernel_pt_table[KERNEL_PT_SYS]);
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pmap_link_l2pt(l1pagetable, IQ80321_IOPXS_VBASE,
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&kernel_pt_table[KERNEL_PT_IOPXS]);
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pmap_link_l2pt(l1pagetable, KERNBASE,
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&kernel_pt_table[KERNEL_PT_BEFOREKERN]);
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pmap_map_chunk(l1pagetable, KERNBASE, IQ80321_SDRAM_START, 0x100000,
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VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
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pmap_map_chunk(l1pagetable, KERNBASE + 0x100000, IQ80321_SDRAM_START + 0x100000,
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0x100000, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
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pmap_map_chunk(l1pagetable, KERNBASE + 0x200000, IQ80321_SDRAM_START + 0x200000,
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(((uint32_t)(lastaddr) - KERNBASE - 0x200000) + L1_S_SIZE) & ~(L1_S_SIZE - 1),
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VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
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freemem_after = ((int)lastaddr + PAGE_SIZE) & ~(PAGE_SIZE - 1);
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afterkern = round_page(((vm_offset_t)lastaddr + L1_S_SIZE) & ~(L1_S_SIZE
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- 1));
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for (i = 0; i < KERNEL_PT_AFKERNEL_NUM; i++) {
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pmap_link_l2pt(l1pagetable, afterkern + i * 0x00100000,
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&kernel_pt_table[KERNEL_PT_AFKERNEL + i]);
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}
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pmap_map_entry(l1pagetable, afterkern, minidataclean.pv_pa,
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VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
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#ifdef ARM_USE_SMALL_ALLOC
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if ((freemem_after + 2 * PAGE_SIZE) <= afterkern) {
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arm_add_smallalloc_pages((void *)(freemem_after),
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(void*)(freemem_after + PAGE_SIZE),
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afterkern - (freemem_after + PAGE_SIZE), 0);
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}
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#endif
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/* Map the Mini-Data cache clean area. */
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xscale_setup_minidata(l1pagetable, afterkern,
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minidataclean.pv_pa);
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/* Map the vector page. */
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pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa,
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VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
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pmap_devmap_bootstrap(l1pagetable, ep80219_devmap);
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/*
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* Give the XScale global cache clean code an appropriately
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* sized chunk of unmapped VA space starting at 0xff000000
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* (our device mappings end before this address).
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*/
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xscale_cache_clean_addr = 0xff000000U;
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cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT);
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setttb(kernel_l1pt.pv_pa);
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cpu_tlb_flushID();
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cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2));
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/*
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* Pages were allocated during the secondary bootstrap for the
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* stacks for different CPU modes.
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* We must now set the r13 registers in the different CPU modes to
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* point to these stacks.
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* Since the ARM stacks use STMFD etc. we must set r13 to the top end
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* of the stack memory.
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*/
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set_stackptr(PSR_IRQ32_MODE,
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irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE);
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set_stackptr(PSR_ABT32_MODE,
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abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE);
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set_stackptr(PSR_UND32_MODE,
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undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE);
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/*
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* We must now clean the cache again....
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* Cleaning may be done by reading new data to displace any
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* dirty data in the cache. This will have happened in setttb()
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* but since we are boot strapping the addresses used for the read
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* may have just been remapped and thus the cache could be out
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* of sync. A re-clean after the switch will cure this.
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* After booting there are no gross reloations of the kernel thus
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* this problem will not occur after initarm().
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*/
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cpu_idcache_wbinv_all();
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/*
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* Fetch the SDRAM start/size from the i80321 SDRAM configration
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* registers.
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*/
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i80321_calibrate_delay();
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i80321_sdram_bounds(&obio_bs_tag, IQ80321_80321_VBASE + VERDE_MCU_BASE,
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&memstart, &memsize);
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physmem = memsize / PAGE_SIZE;
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cninit();
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/* Set stack for exception handlers */
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data_abort_handler_address = (u_int)data_abort_handler;
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prefetch_abort_handler_address = (u_int)prefetch_abort_handler;
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undefined_handler_address = (u_int)undefinedinstruction_bounce;
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undefined_init();
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proc_linkup(&proc0, &thread0);
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thread0.td_kstack = kernelstack.pv_va;
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thread0.td_pcb = (struct pcb *)
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(thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1;
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thread0.td_pcb->pcb_flags = 0;
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thread0.td_frame = &proc0_tf;
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pcpup->pc_curpcb = thread0.td_pcb;
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/* Enable MMU, I-cache, D-cache, write buffer. */
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|
|
arm_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL);
|
|
|
|
|
|
|
|
pmap_curmaxkvaddr = afterkern + PAGE_SIZE;
|
|
dump_avail[0] = 0xa0000000;
|
|
dump_avail[1] = 0xa0000000 + memsize;
|
|
dump_avail[2] = 0;
|
|
dump_avail[3] = 0;
|
|
pmap_bootstrap(pmap_curmaxkvaddr,
|
|
0xd0000000, &kernel_l1pt);
|
|
msgbufp = (void*)msgbufpv.pv_va;
|
|
msgbufinit(msgbufp, MSGBUF_SIZE);
|
|
mutex_init();
|
|
|
|
i = 0;
|
|
#ifdef ARM_USE_SMALL_ALLOC
|
|
phys_avail[i++] = 0xa0000000;
|
|
phys_avail[i++] = 0xa0001000; /*
|
|
*XXX: Gross hack to get our
|
|
* pages in the vm_page_array
|
|
. */
|
|
#endif
|
|
phys_avail[i++] = round_page(virtual_avail - KERNBASE + IQ80321_SDRAM_START);
|
|
phys_avail[i++] = trunc_page(0xa0000000 + memsize - 1);
|
|
phys_avail[i++] = 0;
|
|
phys_avail[i] = 0;
|
|
|
|
/* Do basic tuning, hz etc */
|
|
init_param1();
|
|
init_param2(physmem);
|
|
kdb_init();
|
|
return ((void *)(kernelstack.pv_va + USPACE_SVC_STACK_TOP -
|
|
sizeof(struct pcb)));
|
|
}
|
|
|
|
extern int
|
|
machdep_pci_route_interrupt(device_t pcib, device_t dev, int pin)
|
|
{
|
|
int bus;
|
|
int device;
|
|
int func;
|
|
uint32_t busno;
|
|
struct i80321_pci_softc *sc = device_get_softc(pcib);
|
|
bus = pci_get_bus(dev);
|
|
device = pci_get_slot(dev);
|
|
func = pci_get_function(dev);
|
|
busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
|
|
busno = PCIXSR_BUSNO(busno);
|
|
if (busno == 0xff)
|
|
busno = 0;
|
|
if (bus != busno)
|
|
goto no_mapping;
|
|
switch (device) {
|
|
/* EP80219 PCI */
|
|
case 1: /* Ethernet i82555 10/100 */
|
|
printf("Device %d routed to irq %d\n", device, ICU_INT_XINT(0));
|
|
return (ICU_INT_XINT(0));
|
|
case 2: /* UART */
|
|
printf("Device %d routed to irq %d\n", device, ICU_INT_XINT(1));
|
|
return (ICU_INT_XINT(1));
|
|
case 3:
|
|
/*
|
|
* The S-ATA chips are behind the bridge, and all of
|
|
* the S-ATA interrupts are wired together.
|
|
*/
|
|
printf("Device %d routed to irq %d\n", device, ICU_INT_XINT(2));
|
|
return (ICU_INT_XINT(2));
|
|
case 4: /* MINI-PIC_INT */
|
|
printf("Device %d routed to irq %d\n", device, ICU_INT_XINT(3));
|
|
return( ICU_INT_XINT(3));
|
|
default:
|
|
no_mapping:
|
|
printf("No mapping for %d/%d/%d/%c\n", bus, device, func, pin);
|
|
|
|
}
|
|
return (0);
|
|
|
|
}
|