2005-04-16 15:20:36 -07:00
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/*
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* linux/arch/alpha/kernel/setup.c
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*
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* Copyright (C) 1995 Linus Torvalds
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*/
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/* 2.3.x bootmem, 1999 Andrea Arcangeli <andrea@suse.de> */
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/*
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* Bootup setup stuff.
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*/
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/stddef.h>
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#include <linux/unistd.h>
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#include <linux/ptrace.h>
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#include <linux/slab.h>
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#include <linux/user.h>
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#include <linux/a.out.h>
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2006-07-10 04:44:13 -07:00
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#include <linux/screen_info.h>
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2005-04-16 15:20:36 -07:00
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#include <linux/delay.h>
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#include <linux/mc146818rtc.h>
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#include <linux/console.h>
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2006-04-10 22:53:16 -07:00
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#include <linux/cpu.h>
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2005-04-16 15:20:36 -07:00
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/string.h>
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#include <linux/ioport.h>
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2006-03-13 22:11:50 -07:00
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#include <linux/platform_device.h>
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2005-04-16 15:20:36 -07:00
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#include <linux/bootmem.h>
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#include <linux/pci.h>
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#include <linux/seq_file.h>
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#include <linux/root_dev.h>
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#include <linux/initrd.h>
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#include <linux/eisa.h>
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2006-03-27 02:16:04 -07:00
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#include <linux/pfn.h>
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2005-04-16 15:20:36 -07:00
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#ifdef CONFIG_MAGIC_SYSRQ
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#include <linux/sysrq.h>
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#include <linux/reboot.h>
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#endif
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#include <linux/notifier.h>
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#include <asm/setup.h>
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#include <asm/io.h>
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[PATCH] Notifier chain update: API changes
The kernel's implementation of notifier chains is unsafe. There is no
protection against entries being added to or removed from a chain while the
chain is in use. The issues were discussed in this thread:
http://marc.theaimsgroup.com/?l=linux-kernel&m=113018709002036&w=2
We noticed that notifier chains in the kernel fall into two basic usage
classes:
"Blocking" chains are always called from a process context
and the callout routines are allowed to sleep;
"Atomic" chains can be called from an atomic context and
the callout routines are not allowed to sleep.
We decided to codify this distinction and make it part of the API. Therefore
this set of patches introduces three new, parallel APIs: one for blocking
notifiers, one for atomic notifiers, and one for "raw" notifiers (which is
really just the old API under a new name). New kinds of data structures are
used for the heads of the chains, and new routines are defined for
registration, unregistration, and calling a chain. The three APIs are
explained in include/linux/notifier.h and their implementation is in
kernel/sys.c.
With atomic and blocking chains, the implementation guarantees that the chain
links will not be corrupted and that chain callers will not get messed up by
entries being added or removed. For raw chains the implementation provides no
guarantees at all; users of this API must provide their own protections. (The
idea was that situations may come up where the assumptions of the atomic and
blocking APIs are not appropriate, so it should be possible for users to
handle these things in their own way.)
There are some limitations, which should not be too hard to live with. For
atomic/blocking chains, registration and unregistration must always be done in
a process context since the chain is protected by a mutex/rwsem. Also, a
callout routine for a non-raw chain must not try to register or unregister
entries on its own chain. (This did happen in a couple of places and the code
had to be changed to avoid it.)
Since atomic chains may be called from within an NMI handler, they cannot use
spinlocks for synchronization. Instead we use RCU. The overhead falls almost
entirely in the unregister routine, which is okay since unregistration is much
less frequent that calling a chain.
Here is the list of chains that we adjusted and their classifications. None
of them use the raw API, so for the moment it is only a placeholder.
ATOMIC CHAINS
-------------
arch/i386/kernel/traps.c: i386die_chain
arch/ia64/kernel/traps.c: ia64die_chain
arch/powerpc/kernel/traps.c: powerpc_die_chain
arch/sparc64/kernel/traps.c: sparc64die_chain
arch/x86_64/kernel/traps.c: die_chain
drivers/char/ipmi/ipmi_si_intf.c: xaction_notifier_list
kernel/panic.c: panic_notifier_list
kernel/profile.c: task_free_notifier
net/bluetooth/hci_core.c: hci_notifier
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_chain
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_expect_chain
net/ipv6/addrconf.c: inet6addr_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_expect_chain
net/netlink/af_netlink.c: netlink_chain
BLOCKING CHAINS
---------------
arch/powerpc/platforms/pseries/reconfig.c: pSeries_reconfig_chain
arch/s390/kernel/process.c: idle_chain
arch/x86_64/kernel/process.c idle_notifier
drivers/base/memory.c: memory_chain
drivers/cpufreq/cpufreq.c cpufreq_policy_notifier_list
drivers/cpufreq/cpufreq.c cpufreq_transition_notifier_list
drivers/macintosh/adb.c: adb_client_list
drivers/macintosh/via-pmu.c sleep_notifier_list
drivers/macintosh/via-pmu68k.c sleep_notifier_list
drivers/macintosh/windfarm_core.c wf_client_list
drivers/usb/core/notify.c usb_notifier_list
drivers/video/fbmem.c fb_notifier_list
kernel/cpu.c cpu_chain
kernel/module.c module_notify_list
kernel/profile.c munmap_notifier
kernel/profile.c task_exit_notifier
kernel/sys.c reboot_notifier_list
net/core/dev.c netdev_chain
net/decnet/dn_dev.c: dnaddr_chain
net/ipv4/devinet.c: inetaddr_chain
It's possible that some of these classifications are wrong. If they are,
please let us know or submit a patch to fix them. Note that any chain that
gets called very frequently should be atomic, because the rwsem read-locking
used for blocking chains is very likely to incur cache misses on SMP systems.
(However, if the chain's callout routines may sleep then the chain cannot be
atomic.)
The patch set was written by Alan Stern and Chandra Seetharaman, incorporating
material written by Keith Owens and suggestions from Paul McKenney and Andrew
Morton.
[jes@sgi.com: restructure the notifier chain initialization macros]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27 02:16:30 -07:00
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extern struct atomic_notifier_head panic_notifier_list;
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2005-04-16 15:20:36 -07:00
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static int alpha_panic_event(struct notifier_block *, unsigned long, void *);
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static struct notifier_block alpha_panic_block = {
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alpha_panic_event,
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NULL,
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INT_MAX /* try to do it first */
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};
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#include <asm/uaccess.h>
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#include <asm/pgtable.h>
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#include <asm/system.h>
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#include <asm/hwrpb.h>
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#include <asm/dma.h>
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#include <asm/io.h>
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#include <asm/mmu_context.h>
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#include <asm/console.h>
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#include "proto.h"
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#include "pci_impl.h"
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struct hwrpb_struct *hwrpb;
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2006-10-11 09:40:22 -07:00
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EXPORT_SYMBOL(hwrpb);
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2005-04-16 15:20:36 -07:00
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unsigned long srm_hae;
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int alpha_l1i_cacheshape;
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int alpha_l1d_cacheshape;
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int alpha_l2_cacheshape;
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int alpha_l3_cacheshape;
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#ifdef CONFIG_VERBOSE_MCHECK
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/* 0=minimum, 1=verbose, 2=all */
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/* These can be overridden via the command line, ie "verbose_mcheck=2") */
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unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON;
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#endif
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/* Which processor we booted from. */
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int boot_cpuid;
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/*
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* Using SRM callbacks for initial console output. This works from
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* setup_arch() time through the end of time_init(), as those places
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* are under our (Alpha) control.
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* "srmcons" specified in the boot command arguments allows us to
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* see kernel messages during the period of time before the true
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* console device is "registered" during console_init().
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* As of this version (2.5.59), console_init() will call
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* disable_early_printk() as the last action before initializing
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* the console drivers. That's the last possible time srmcons can be
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* unregistered without interfering with console behavior.
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*
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* By default, OFF; set it with a bootcommand arg of "srmcons" or
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* "console=srm". The meaning of these two args is:
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* "srmcons" - early callback prints
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* "console=srm" - full callback based console, including early prints
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*/
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int srmcons_output = 0;
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/* Enforce a memory size limit; useful for testing. By default, none. */
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unsigned long mem_size_limit = 0;
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/* Set AGP GART window size (0 means disabled). */
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unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE;
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#ifdef CONFIG_ALPHA_GENERIC
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struct alpha_machine_vector alpha_mv;
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int alpha_using_srm;
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2006-10-11 09:40:22 -07:00
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EXPORT_SYMBOL(alpha_using_srm);
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2005-04-16 15:20:36 -07:00
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#endif
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static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long,
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unsigned long);
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static struct alpha_machine_vector *get_sysvec_byname(const char *);
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static void get_sysnames(unsigned long, unsigned long, unsigned long,
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char **, char **);
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static void determine_cpu_caches (unsigned int);
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static char command_line[COMMAND_LINE_SIZE];
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/*
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* The format of "screen_info" is strange, and due to early
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* i386-setup code. This is just enough to make the console
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* code think we're on a VGA color display.
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*/
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struct screen_info screen_info = {
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.orig_x = 0,
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.orig_y = 25,
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.orig_video_cols = 80,
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.orig_video_lines = 25,
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.orig_video_isVGA = 1,
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.orig_video_points = 16
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};
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2006-10-11 09:40:22 -07:00
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EXPORT_SYMBOL(screen_info);
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2005-04-16 15:20:36 -07:00
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/*
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* The direct map I/O window, if any. This should be the same
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* for all busses, since it's used by virt_to_bus.
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*/
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unsigned long __direct_map_base;
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unsigned long __direct_map_size;
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2006-10-11 09:40:22 -07:00
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EXPORT_SYMBOL(__direct_map_base);
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EXPORT_SYMBOL(__direct_map_size);
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2005-04-16 15:20:36 -07:00
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/*
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* Declare all of the machine vectors.
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*/
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/* GCC 2.7.2 (on alpha at least) is lame. It does not support either
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__attribute__((weak)) or #pragma weak. Bypass it and talk directly
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to the assembler. */
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#define WEAK(X) \
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extern struct alpha_machine_vector X; \
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asm(".weak "#X)
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WEAK(alcor_mv);
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WEAK(alphabook1_mv);
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WEAK(avanti_mv);
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WEAK(cabriolet_mv);
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WEAK(clipper_mv);
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WEAK(dp264_mv);
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WEAK(eb164_mv);
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WEAK(eb64p_mv);
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WEAK(eb66_mv);
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WEAK(eb66p_mv);
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WEAK(eiger_mv);
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WEAK(jensen_mv);
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WEAK(lx164_mv);
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WEAK(lynx_mv);
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WEAK(marvel_ev7_mv);
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WEAK(miata_mv);
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WEAK(mikasa_mv);
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WEAK(mikasa_primo_mv);
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WEAK(monet_mv);
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WEAK(nautilus_mv);
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WEAK(noname_mv);
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WEAK(noritake_mv);
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WEAK(noritake_primo_mv);
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WEAK(p2k_mv);
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WEAK(pc164_mv);
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WEAK(privateer_mv);
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WEAK(rawhide_mv);
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WEAK(ruffian_mv);
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WEAK(rx164_mv);
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WEAK(sable_mv);
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WEAK(sable_gamma_mv);
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WEAK(shark_mv);
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WEAK(sx164_mv);
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WEAK(takara_mv);
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WEAK(titan_mv);
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WEAK(webbrick_mv);
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WEAK(wildfire_mv);
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WEAK(xl_mv);
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WEAK(xlt_mv);
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#undef WEAK
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/*
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* I/O resources inherited from PeeCees. Except for perhaps the
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* turbochannel alphas, everyone has these on some sort of SuperIO chip.
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*
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* ??? If this becomes less standard, move the struct out into the
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* machine vector.
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*/
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static void __init
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reserve_std_resources(void)
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{
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static struct resource standard_io_resources[] = {
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{ .name = "rtc", .start = -1, .end = -1 },
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{ .name = "dma1", .start = 0x00, .end = 0x1f },
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{ .name = "pic1", .start = 0x20, .end = 0x3f },
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{ .name = "timer", .start = 0x40, .end = 0x5f },
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{ .name = "keyboard", .start = 0x60, .end = 0x6f },
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{ .name = "dma page reg", .start = 0x80, .end = 0x8f },
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{ .name = "pic2", .start = 0xa0, .end = 0xbf },
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{ .name = "dma2", .start = 0xc0, .end = 0xdf },
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};
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struct resource *io = &ioport_resource;
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size_t i;
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if (hose_head) {
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struct pci_controller *hose;
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for (hose = hose_head; hose; hose = hose->next)
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if (hose->index == 0) {
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io = hose->io_space;
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break;
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}
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}
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/* Fix up for the Jensen's queer RTC placement. */
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standard_io_resources[0].start = RTC_PORT(0);
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standard_io_resources[0].end = RTC_PORT(0) + 0x10;
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2006-07-30 03:03:23 -07:00
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for (i = 0; i < ARRAY_SIZE(standard_io_resources); ++i)
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2005-04-16 15:20:36 -07:00
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request_resource(io, standard_io_resources+i);
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}
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#define PFN_MAX PFN_DOWN(0x80000000)
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#define for_each_mem_cluster(memdesc, cluster, i) \
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for ((cluster) = (memdesc)->cluster, (i) = 0; \
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(i) < (memdesc)->numclusters; (i)++, (cluster)++)
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static unsigned long __init
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get_mem_size_limit(char *s)
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{
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unsigned long end = 0;
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char *from = s;
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end = simple_strtoul(from, &from, 0);
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if ( *from == 'K' || *from == 'k' ) {
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end = end << 10;
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from++;
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} else if ( *from == 'M' || *from == 'm' ) {
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end = end << 20;
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from++;
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} else if ( *from == 'G' || *from == 'g' ) {
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end = end << 30;
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from++;
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}
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return end >> PAGE_SHIFT; /* Return the PFN of the limit. */
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}
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#ifdef CONFIG_BLK_DEV_INITRD
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void * __init
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move_initrd(unsigned long mem_limit)
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{
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void *start;
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unsigned long size;
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size = initrd_end - initrd_start;
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start = __alloc_bootmem(PAGE_ALIGN(size), PAGE_SIZE, 0);
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|
|
if (!start || __pa(start) + size > mem_limit) {
|
|
|
|
initrd_start = initrd_end = 0;
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
memmove(start, (void *)initrd_start, size);
|
|
|
|
initrd_start = (unsigned long)start;
|
|
|
|
initrd_end = initrd_start + size;
|
|
|
|
printk("initrd moved to %p\n", start);
|
|
|
|
return start;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef CONFIG_DISCONTIGMEM
|
|
|
|
static void __init
|
|
|
|
setup_memory(void *kernel_end)
|
|
|
|
{
|
|
|
|
struct memclust_struct * cluster;
|
|
|
|
struct memdesc_struct * memdesc;
|
|
|
|
unsigned long start_kernel_pfn, end_kernel_pfn;
|
|
|
|
unsigned long bootmap_size, bootmap_pages, bootmap_start;
|
|
|
|
unsigned long start, end;
|
|
|
|
unsigned long i;
|
|
|
|
|
|
|
|
/* Find free clusters, and init and free the bootmem accordingly. */
|
|
|
|
memdesc = (struct memdesc_struct *)
|
|
|
|
(hwrpb->mddt_offset + (unsigned long) hwrpb);
|
|
|
|
|
|
|
|
for_each_mem_cluster(memdesc, cluster, i) {
|
|
|
|
printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n",
|
|
|
|
i, cluster->usage, cluster->start_pfn,
|
|
|
|
cluster->start_pfn + cluster->numpages);
|
|
|
|
|
|
|
|
/* Bit 0 is console/PALcode reserved. Bit 1 is
|
|
|
|
non-volatile memory -- we might want to mark
|
|
|
|
this for later. */
|
|
|
|
if (cluster->usage & 3)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
end = cluster->start_pfn + cluster->numpages;
|
|
|
|
if (end > max_low_pfn)
|
|
|
|
max_low_pfn = end;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Except for the NUMA systems (wildfire, marvel) all of the
|
|
|
|
* Alpha systems we run on support 32GB of memory or less.
|
|
|
|
* Since the NUMA systems introduce large holes in memory addressing,
|
|
|
|
* we can get into a situation where there is not enough contiguous
|
|
|
|
* memory for the memory map.
|
|
|
|
*
|
|
|
|
* Limit memory to the first 32GB to limit the NUMA systems to
|
|
|
|
* memory on their first node (wildfire) or 2 (marvel) to avoid
|
|
|
|
* not being able to produce the memory map. In order to access
|
|
|
|
* all of the memory on the NUMA systems, build with discontiguous
|
|
|
|
* memory support.
|
|
|
|
*
|
|
|
|
* If the user specified a memory limit, let that memory limit stand.
|
|
|
|
*/
|
|
|
|
if (!mem_size_limit)
|
|
|
|
mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT;
|
|
|
|
|
|
|
|
if (mem_size_limit && max_low_pfn >= mem_size_limit)
|
|
|
|
{
|
|
|
|
printk("setup: forcing memory size to %ldK (from %ldK).\n",
|
|
|
|
mem_size_limit << (PAGE_SHIFT - 10),
|
|
|
|
max_low_pfn << (PAGE_SHIFT - 10));
|
|
|
|
max_low_pfn = mem_size_limit;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Find the bounds of kernel memory. */
|
|
|
|
start_kernel_pfn = PFN_DOWN(KERNEL_START_PHYS);
|
|
|
|
end_kernel_pfn = PFN_UP(virt_to_phys(kernel_end));
|
|
|
|
bootmap_start = -1;
|
|
|
|
|
|
|
|
try_again:
|
|
|
|
if (max_low_pfn <= end_kernel_pfn)
|
|
|
|
panic("not enough memory to boot");
|
|
|
|
|
|
|
|
/* We need to know how many physically contiguous pages
|
|
|
|
we'll need for the bootmap. */
|
|
|
|
bootmap_pages = bootmem_bootmap_pages(max_low_pfn);
|
|
|
|
|
|
|
|
/* Now find a good region where to allocate the bootmap. */
|
|
|
|
for_each_mem_cluster(memdesc, cluster, i) {
|
|
|
|
if (cluster->usage & 3)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
start = cluster->start_pfn;
|
|
|
|
end = start + cluster->numpages;
|
|
|
|
if (start >= max_low_pfn)
|
|
|
|
continue;
|
|
|
|
if (end > max_low_pfn)
|
|
|
|
end = max_low_pfn;
|
|
|
|
if (start < start_kernel_pfn) {
|
|
|
|
if (end > end_kernel_pfn
|
|
|
|
&& end - end_kernel_pfn >= bootmap_pages) {
|
|
|
|
bootmap_start = end_kernel_pfn;
|
|
|
|
break;
|
|
|
|
} else if (end > start_kernel_pfn)
|
|
|
|
end = start_kernel_pfn;
|
|
|
|
} else if (start < end_kernel_pfn)
|
|
|
|
start = end_kernel_pfn;
|
|
|
|
if (end - start >= bootmap_pages) {
|
|
|
|
bootmap_start = start;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (bootmap_start == ~0UL) {
|
|
|
|
max_low_pfn >>= 1;
|
|
|
|
goto try_again;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Allocate the bootmap and mark the whole MM as reserved. */
|
|
|
|
bootmap_size = init_bootmem(bootmap_start, max_low_pfn);
|
|
|
|
|
|
|
|
/* Mark the free regions. */
|
|
|
|
for_each_mem_cluster(memdesc, cluster, i) {
|
|
|
|
if (cluster->usage & 3)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
start = cluster->start_pfn;
|
|
|
|
end = cluster->start_pfn + cluster->numpages;
|
|
|
|
if (start >= max_low_pfn)
|
|
|
|
continue;
|
|
|
|
if (end > max_low_pfn)
|
|
|
|
end = max_low_pfn;
|
|
|
|
if (start < start_kernel_pfn) {
|
|
|
|
if (end > end_kernel_pfn) {
|
|
|
|
free_bootmem(PFN_PHYS(start),
|
|
|
|
(PFN_PHYS(start_kernel_pfn)
|
|
|
|
- PFN_PHYS(start)));
|
|
|
|
printk("freeing pages %ld:%ld\n",
|
|
|
|
start, start_kernel_pfn);
|
|
|
|
start = end_kernel_pfn;
|
|
|
|
} else if (end > start_kernel_pfn)
|
|
|
|
end = start_kernel_pfn;
|
|
|
|
} else if (start < end_kernel_pfn)
|
|
|
|
start = end_kernel_pfn;
|
|
|
|
if (start >= end)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
free_bootmem(PFN_PHYS(start), PFN_PHYS(end) - PFN_PHYS(start));
|
|
|
|
printk("freeing pages %ld:%ld\n", start, end);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Reserve the bootmap memory. */
|
|
|
|
reserve_bootmem(PFN_PHYS(bootmap_start), bootmap_size);
|
|
|
|
printk("reserving pages %ld:%ld\n", bootmap_start, bootmap_start+PFN_UP(bootmap_size));
|
|
|
|
|
|
|
|
#ifdef CONFIG_BLK_DEV_INITRD
|
|
|
|
initrd_start = INITRD_START;
|
|
|
|
if (initrd_start) {
|
|
|
|
initrd_end = initrd_start+INITRD_SIZE;
|
|
|
|
printk("Initial ramdisk at: 0x%p (%lu bytes)\n",
|
|
|
|
(void *) initrd_start, INITRD_SIZE);
|
|
|
|
|
|
|
|
if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) {
|
|
|
|
if (!move_initrd(PFN_PHYS(max_low_pfn)))
|
|
|
|
printk("initrd extends beyond end of memory "
|
|
|
|
"(0x%08lx > 0x%p)\ndisabling initrd\n",
|
|
|
|
initrd_end,
|
|
|
|
phys_to_virt(PFN_PHYS(max_low_pfn)));
|
|
|
|
} else {
|
|
|
|
reserve_bootmem(virt_to_phys((void *)initrd_start),
|
|
|
|
INITRD_SIZE);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif /* CONFIG_BLK_DEV_INITRD */
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
extern void setup_memory(void *);
|
|
|
|
#endif /* !CONFIG_DISCONTIGMEM */
|
|
|
|
|
|
|
|
int __init
|
|
|
|
page_is_ram(unsigned long pfn)
|
|
|
|
{
|
|
|
|
struct memclust_struct * cluster;
|
|
|
|
struct memdesc_struct * memdesc;
|
|
|
|
unsigned long i;
|
|
|
|
|
|
|
|
memdesc = (struct memdesc_struct *)
|
|
|
|
(hwrpb->mddt_offset + (unsigned long) hwrpb);
|
|
|
|
for_each_mem_cluster(memdesc, cluster, i)
|
|
|
|
{
|
|
|
|
if (pfn >= cluster->start_pfn &&
|
|
|
|
pfn < cluster->start_pfn + cluster->numpages) {
|
|
|
|
return (cluster->usage & 3) ? 0 : 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2006-04-10 22:53:16 -07:00
|
|
|
static int __init
|
|
|
|
register_cpus(void)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for_each_possible_cpu(i) {
|
|
|
|
struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
|
|
|
|
if (!p)
|
|
|
|
return -ENOMEM;
|
[PATCH] node hotplug: register cpu: remove node struct
With Goto-san's patch, we can add new pgdat/node at runtime. I'm now
considering node-hot-add with cpu + memory on ACPI.
I found acpi container, which describes node, could evaluate cpu before
memory. This means cpu-hot-add occurs before memory hot add.
In most part, cpu-hot-add doesn't depend on node hot add. But register_cpu(),
which creates symbolic link from node to cpu, requires that node should be
onlined before register_cpu(). When a node is onlined, its pgdat should be
there.
This patch-set holds off creating symbolic link from node to cpu
until node is onlined.
This removes node arguments from register_cpu().
Now, register_cpu() requires 'struct node' as its argument. But the array of
struct node is now unified in driver/base/node.c now (By Goto's node hotplug
patch). We can get struct node in generic way. So, this argument is not
necessary now.
This patch also guarantees add cpu under node only when node is onlined. It
is necessary for node-hot-add vs. cpu-hot-add patch following this.
Moreover, register_cpu calculates cpu->node_id by cpu_to_node() without regard
to its 'struct node *root' argument. This patch removes it.
Also modify callers of register_cpu()/unregister_cpu, whose args are changed
by register-cpu-remove-node-struct patch.
[Brice.Goglin@ens-lyon.org: fix it]
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Brice Goglin <Brice.Goglin@ens-lyon.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-27 02:53:41 -07:00
|
|
|
register_cpu(p, i);
|
2006-04-10 22:53:16 -07:00
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
arch_initcall(register_cpus);
|
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
void __init
|
|
|
|
setup_arch(char **cmdline_p)
|
|
|
|
{
|
|
|
|
extern char _end[];
|
|
|
|
|
|
|
|
struct alpha_machine_vector *vec = NULL;
|
|
|
|
struct percpu_struct *cpu;
|
|
|
|
char *type_name, *var_name, *p;
|
|
|
|
void *kernel_end = _end; /* end of kernel */
|
|
|
|
char *args = command_line;
|
|
|
|
|
|
|
|
hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr);
|
|
|
|
boot_cpuid = hard_smp_processor_id();
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Pre-process the system type to make sure it will be valid.
|
|
|
|
*
|
|
|
|
* This may restore real CABRIO and EB66+ family names, ie
|
|
|
|
* EB64+ and EB66.
|
|
|
|
*
|
|
|
|
* Oh, and "white box" AS800 (aka DIGITAL Server 3000 series)
|
|
|
|
* and AS1200 (DIGITAL Server 5000 series) have the type as
|
|
|
|
* the negative of the real one.
|
|
|
|
*/
|
|
|
|
if ((long)hwrpb->sys_type < 0) {
|
|
|
|
hwrpb->sys_type = -((long)hwrpb->sys_type);
|
|
|
|
hwrpb_update_checksum(hwrpb);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Register a call for panic conditions. */
|
[PATCH] Notifier chain update: API changes
The kernel's implementation of notifier chains is unsafe. There is no
protection against entries being added to or removed from a chain while the
chain is in use. The issues were discussed in this thread:
http://marc.theaimsgroup.com/?l=linux-kernel&m=113018709002036&w=2
We noticed that notifier chains in the kernel fall into two basic usage
classes:
"Blocking" chains are always called from a process context
and the callout routines are allowed to sleep;
"Atomic" chains can be called from an atomic context and
the callout routines are not allowed to sleep.
We decided to codify this distinction and make it part of the API. Therefore
this set of patches introduces three new, parallel APIs: one for blocking
notifiers, one for atomic notifiers, and one for "raw" notifiers (which is
really just the old API under a new name). New kinds of data structures are
used for the heads of the chains, and new routines are defined for
registration, unregistration, and calling a chain. The three APIs are
explained in include/linux/notifier.h and their implementation is in
kernel/sys.c.
With atomic and blocking chains, the implementation guarantees that the chain
links will not be corrupted and that chain callers will not get messed up by
entries being added or removed. For raw chains the implementation provides no
guarantees at all; users of this API must provide their own protections. (The
idea was that situations may come up where the assumptions of the atomic and
blocking APIs are not appropriate, so it should be possible for users to
handle these things in their own way.)
There are some limitations, which should not be too hard to live with. For
atomic/blocking chains, registration and unregistration must always be done in
a process context since the chain is protected by a mutex/rwsem. Also, a
callout routine for a non-raw chain must not try to register or unregister
entries on its own chain. (This did happen in a couple of places and the code
had to be changed to avoid it.)
Since atomic chains may be called from within an NMI handler, they cannot use
spinlocks for synchronization. Instead we use RCU. The overhead falls almost
entirely in the unregister routine, which is okay since unregistration is much
less frequent that calling a chain.
Here is the list of chains that we adjusted and their classifications. None
of them use the raw API, so for the moment it is only a placeholder.
ATOMIC CHAINS
-------------
arch/i386/kernel/traps.c: i386die_chain
arch/ia64/kernel/traps.c: ia64die_chain
arch/powerpc/kernel/traps.c: powerpc_die_chain
arch/sparc64/kernel/traps.c: sparc64die_chain
arch/x86_64/kernel/traps.c: die_chain
drivers/char/ipmi/ipmi_si_intf.c: xaction_notifier_list
kernel/panic.c: panic_notifier_list
kernel/profile.c: task_free_notifier
net/bluetooth/hci_core.c: hci_notifier
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_chain
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_expect_chain
net/ipv6/addrconf.c: inet6addr_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_expect_chain
net/netlink/af_netlink.c: netlink_chain
BLOCKING CHAINS
---------------
arch/powerpc/platforms/pseries/reconfig.c: pSeries_reconfig_chain
arch/s390/kernel/process.c: idle_chain
arch/x86_64/kernel/process.c idle_notifier
drivers/base/memory.c: memory_chain
drivers/cpufreq/cpufreq.c cpufreq_policy_notifier_list
drivers/cpufreq/cpufreq.c cpufreq_transition_notifier_list
drivers/macintosh/adb.c: adb_client_list
drivers/macintosh/via-pmu.c sleep_notifier_list
drivers/macintosh/via-pmu68k.c sleep_notifier_list
drivers/macintosh/windfarm_core.c wf_client_list
drivers/usb/core/notify.c usb_notifier_list
drivers/video/fbmem.c fb_notifier_list
kernel/cpu.c cpu_chain
kernel/module.c module_notify_list
kernel/profile.c munmap_notifier
kernel/profile.c task_exit_notifier
kernel/sys.c reboot_notifier_list
net/core/dev.c netdev_chain
net/decnet/dn_dev.c: dnaddr_chain
net/ipv4/devinet.c: inetaddr_chain
It's possible that some of these classifications are wrong. If they are,
please let us know or submit a patch to fix them. Note that any chain that
gets called very frequently should be atomic, because the rwsem read-locking
used for blocking chains is very likely to incur cache misses on SMP systems.
(However, if the chain's callout routines may sleep then the chain cannot be
atomic.)
The patch set was written by Alan Stern and Chandra Seetharaman, incorporating
material written by Keith Owens and suggestions from Paul McKenney and Andrew
Morton.
[jes@sgi.com: restructure the notifier chain initialization macros]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27 02:16:30 -07:00
|
|
|
atomic_notifier_chain_register(&panic_notifier_list,
|
|
|
|
&alpha_panic_block);
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
#ifdef CONFIG_ALPHA_GENERIC
|
|
|
|
/* Assume that we've booted from SRM if we haven't booted from MILO.
|
|
|
|
Detect the later by looking for "MILO" in the system serial nr. */
|
|
|
|
alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* If we are using SRM, we want to allow callbacks
|
|
|
|
as early as possible, so do this NOW, and then
|
|
|
|
they should work immediately thereafter.
|
|
|
|
*/
|
|
|
|
kernel_end = callback_init(kernel_end);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Locate the command line.
|
|
|
|
*/
|
|
|
|
/* Hack for Jensen... since we're restricted to 8 or 16 chars for
|
|
|
|
boot flags depending on the boot mode, we need some shorthand.
|
|
|
|
This should do for installation. */
|
|
|
|
if (strcmp(COMMAND_LINE, "INSTALL") == 0) {
|
|
|
|
strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line);
|
|
|
|
} else {
|
|
|
|
strlcpy(command_line, COMMAND_LINE, sizeof command_line);
|
|
|
|
}
|
|
|
|
strcpy(saved_command_line, command_line);
|
|
|
|
*cmdline_p = command_line;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Process command-line arguments.
|
|
|
|
*/
|
|
|
|
while ((p = strsep(&args, " \t")) != NULL) {
|
|
|
|
if (!*p) continue;
|
|
|
|
if (strncmp(p, "alpha_mv=", 9) == 0) {
|
|
|
|
vec = get_sysvec_byname(p+9);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (strncmp(p, "cycle=", 6) == 0) {
|
|
|
|
est_cycle_freq = simple_strtol(p+6, NULL, 0);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (strncmp(p, "mem=", 4) == 0) {
|
|
|
|
mem_size_limit = get_mem_size_limit(p+4);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (strncmp(p, "srmcons", 7) == 0) {
|
|
|
|
srmcons_output |= 1;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (strncmp(p, "console=srm", 11) == 0) {
|
|
|
|
srmcons_output |= 2;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (strncmp(p, "gartsize=", 9) == 0) {
|
|
|
|
alpha_agpgart_size =
|
|
|
|
get_mem_size_limit(p+9) << PAGE_SHIFT;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
#ifdef CONFIG_VERBOSE_MCHECK
|
|
|
|
if (strncmp(p, "verbose_mcheck=", 15) == 0) {
|
|
|
|
alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Replace the command line, now that we've killed it with strsep. */
|
|
|
|
strcpy(command_line, saved_command_line);
|
|
|
|
|
|
|
|
/* If we want SRM console printk echoing early, do it now. */
|
|
|
|
if (alpha_using_srm && srmcons_output) {
|
|
|
|
register_srm_console();
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If "console=srm" was specified, clear the srmcons_output
|
|
|
|
* flag now so that time.c won't unregister_srm_console
|
|
|
|
*/
|
|
|
|
if (srmcons_output & 2)
|
|
|
|
srmcons_output = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_MAGIC_SYSRQ
|
|
|
|
/* If we're using SRM, make sysrq-b halt back to the prom,
|
|
|
|
not auto-reboot. */
|
|
|
|
if (alpha_using_srm) {
|
|
|
|
struct sysrq_key_op *op = __sysrq_get_key_op('b');
|
|
|
|
op->handler = (void *) machine_halt;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Identify and reconfigure for the current system.
|
|
|
|
*/
|
|
|
|
cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset);
|
|
|
|
|
|
|
|
get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
|
|
|
|
cpu->type, &type_name, &var_name);
|
|
|
|
if (*var_name == '0')
|
|
|
|
var_name = "";
|
|
|
|
|
|
|
|
if (!vec) {
|
|
|
|
vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation,
|
|
|
|
cpu->type);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!vec) {
|
|
|
|
panic("Unsupported system type: %s%s%s (%ld %ld)\n",
|
|
|
|
type_name, (*var_name ? " variation " : ""), var_name,
|
|
|
|
hwrpb->sys_type, hwrpb->sys_variation);
|
|
|
|
}
|
|
|
|
if (vec != &alpha_mv) {
|
|
|
|
alpha_mv = *vec;
|
|
|
|
}
|
|
|
|
|
|
|
|
printk("Booting "
|
|
|
|
#ifdef CONFIG_ALPHA_GENERIC
|
|
|
|
"GENERIC "
|
|
|
|
#endif
|
|
|
|
"on %s%s%s using machine vector %s from %s\n",
|
|
|
|
type_name, (*var_name ? " variation " : ""),
|
|
|
|
var_name, alpha_mv.vector_name,
|
|
|
|
(alpha_using_srm ? "SRM" : "MILO"));
|
|
|
|
|
|
|
|
printk("Major Options: "
|
|
|
|
#ifdef CONFIG_SMP
|
|
|
|
"SMP "
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_ALPHA_EV56
|
|
|
|
"EV56 "
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_ALPHA_EV67
|
|
|
|
"EV67 "
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS
|
|
|
|
"LEGACY_START "
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_VERBOSE_MCHECK
|
|
|
|
"VERBOSE_MCHECK "
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef CONFIG_DISCONTIGMEM
|
|
|
|
"DISCONTIGMEM "
|
|
|
|
#ifdef CONFIG_NUMA
|
|
|
|
"NUMA "
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef CONFIG_DEBUG_SPINLOCK
|
|
|
|
"DEBUG_SPINLOCK "
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_MAGIC_SYSRQ
|
|
|
|
"MAGIC_SYSRQ "
|
|
|
|
#endif
|
|
|
|
"\n");
|
|
|
|
|
|
|
|
printk("Command line: %s\n", command_line);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Sync up the HAE.
|
|
|
|
* Save the SRM's current value for restoration.
|
|
|
|
*/
|
|
|
|
srm_hae = *alpha_mv.hae_register;
|
|
|
|
__set_hae(alpha_mv.hae_cache);
|
|
|
|
|
|
|
|
/* Reset enable correctable error reports. */
|
|
|
|
wrmces(0x7);
|
|
|
|
|
|
|
|
/* Find our memory. */
|
|
|
|
setup_memory(kernel_end);
|
|
|
|
|
|
|
|
/* First guess at cpu cache sizes. Do this before init_arch. */
|
|
|
|
determine_cpu_caches(cpu->type);
|
|
|
|
|
|
|
|
/* Initialize the machine. Usually has to do with setting up
|
|
|
|
DMA windows and the like. */
|
|
|
|
if (alpha_mv.init_arch)
|
|
|
|
alpha_mv.init_arch();
|
|
|
|
|
|
|
|
/* Reserve standard resources. */
|
|
|
|
reserve_std_resources();
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Give us a default console. TGA users will see nothing until
|
|
|
|
* chr_dev_init is called, rather late in the boot sequence.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#ifdef CONFIG_VT
|
|
|
|
#if defined(CONFIG_VGA_CONSOLE)
|
|
|
|
conswitchp = &vga_con;
|
|
|
|
#elif defined(CONFIG_DUMMY_CONSOLE)
|
|
|
|
conswitchp = &dummy_con;
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Default root filesystem to sda2. */
|
|
|
|
ROOT_DEV = Root_SDA2;
|
|
|
|
|
|
|
|
#ifdef CONFIG_EISA
|
|
|
|
/* FIXME: only set this when we actually have EISA in this box? */
|
|
|
|
EISA_bus = 1;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check ASN in HWRPB for validity, report if bad.
|
|
|
|
* FIXME: how was this failing? Should we trust it instead,
|
|
|
|
* and copy the value into alpha_mv.max_asn?
|
|
|
|
*/
|
|
|
|
|
|
|
|
if (hwrpb->max_asn != MAX_ASN) {
|
|
|
|
printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Identify the flock of penguins.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#ifdef CONFIG_SMP
|
|
|
|
setup_smp();
|
|
|
|
#endif
|
|
|
|
paging_init();
|
|
|
|
}
|
|
|
|
|
|
|
|
void __init
|
|
|
|
disable_early_printk(void)
|
|
|
|
{
|
|
|
|
if (alpha_using_srm && srmcons_output) {
|
|
|
|
unregister_srm_console();
|
|
|
|
srmcons_output = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static char sys_unknown[] = "Unknown";
|
|
|
|
static char systype_names[][16] = {
|
|
|
|
"0",
|
|
|
|
"ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen",
|
|
|
|
"Pelican", "Morgan", "Sable", "Medulla", "Noname",
|
|
|
|
"Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind",
|
|
|
|
"Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1",
|
|
|
|
"Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake",
|
|
|
|
"Cortex", "29", "Miata", "XXM", "Takara", "Yukon",
|
|
|
|
"Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel"
|
|
|
|
};
|
|
|
|
|
|
|
|
static char unofficial_names[][8] = {"100", "Ruffian"};
|
|
|
|
|
|
|
|
static char api_names[][16] = {"200", "Nautilus"};
|
|
|
|
|
|
|
|
static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"};
|
|
|
|
static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4};
|
|
|
|
|
|
|
|
static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"};
|
|
|
|
static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2};
|
|
|
|
|
|
|
|
static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"};
|
|
|
|
static int eb64p_indices[] = {0,0,1,2};
|
|
|
|
|
|
|
|
static char eb66_names[][8] = {"EB66", "EB66+"};
|
|
|
|
static int eb66_indices[] = {0,0,1};
|
|
|
|
|
|
|
|
static char marvel_names[][16] = {
|
|
|
|
"Marvel/EV7"
|
|
|
|
};
|
|
|
|
static int marvel_indices[] = { 0 };
|
|
|
|
|
|
|
|
static char rawhide_names[][16] = {
|
|
|
|
"Dodge", "Wrangler", "Durango", "Tincup", "DaVinci"
|
|
|
|
};
|
|
|
|
static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4};
|
|
|
|
|
|
|
|
static char titan_names[][16] = {
|
|
|
|
"DEFAULT", "Privateer", "Falcon", "Granite"
|
|
|
|
};
|
|
|
|
static int titan_indices[] = {0,1,2,2,3};
|
|
|
|
|
|
|
|
static char tsunami_names[][16] = {
|
|
|
|
"0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper",
|
|
|
|
"Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne",
|
|
|
|
"Flying Clipper", "Shark"
|
|
|
|
};
|
|
|
|
static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12};
|
|
|
|
|
|
|
|
static struct alpha_machine_vector * __init
|
|
|
|
get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu)
|
|
|
|
{
|
|
|
|
static struct alpha_machine_vector *systype_vecs[] __initdata =
|
|
|
|
{
|
|
|
|
NULL, /* 0 */
|
|
|
|
NULL, /* ADU */
|
|
|
|
NULL, /* Cobra */
|
|
|
|
NULL, /* Ruby */
|
|
|
|
NULL, /* Flamingo */
|
|
|
|
NULL, /* Mannequin */
|
|
|
|
&jensen_mv,
|
|
|
|
NULL, /* Pelican */
|
|
|
|
NULL, /* Morgan */
|
|
|
|
NULL, /* Sable -- see below. */
|
|
|
|
NULL, /* Medulla */
|
|
|
|
&noname_mv,
|
|
|
|
NULL, /* Turbolaser */
|
|
|
|
&avanti_mv,
|
|
|
|
NULL, /* Mustang */
|
|
|
|
NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */
|
|
|
|
NULL, /* Tradewind */
|
|
|
|
NULL, /* Mikasa -- see below. */
|
|
|
|
NULL, /* EB64 */
|
|
|
|
NULL, /* EB66 -- see variation. */
|
|
|
|
NULL, /* EB64+ -- see variation. */
|
|
|
|
&alphabook1_mv,
|
|
|
|
&rawhide_mv,
|
|
|
|
NULL, /* K2 */
|
|
|
|
&lynx_mv, /* Lynx */
|
|
|
|
&xl_mv,
|
|
|
|
NULL, /* EB164 -- see variation. */
|
|
|
|
NULL, /* Noritake -- see below. */
|
|
|
|
NULL, /* Cortex */
|
|
|
|
NULL, /* 29 */
|
|
|
|
&miata_mv,
|
|
|
|
NULL, /* XXM */
|
|
|
|
&takara_mv,
|
|
|
|
NULL, /* Yukon */
|
|
|
|
NULL, /* Tsunami -- see variation. */
|
|
|
|
&wildfire_mv, /* Wildfire */
|
|
|
|
NULL, /* CUSCO */
|
|
|
|
&eiger_mv, /* Eiger */
|
|
|
|
NULL, /* Titan */
|
|
|
|
NULL, /* Marvel */
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct alpha_machine_vector *unofficial_vecs[] __initdata =
|
|
|
|
{
|
|
|
|
NULL, /* 100 */
|
|
|
|
&ruffian_mv,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct alpha_machine_vector *api_vecs[] __initdata =
|
|
|
|
{
|
|
|
|
NULL, /* 200 */
|
|
|
|
&nautilus_mv,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct alpha_machine_vector *alcor_vecs[] __initdata =
|
|
|
|
{
|
|
|
|
&alcor_mv, &xlt_mv, &xlt_mv
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct alpha_machine_vector *eb164_vecs[] __initdata =
|
|
|
|
{
|
|
|
|
&eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct alpha_machine_vector *eb64p_vecs[] __initdata =
|
|
|
|
{
|
|
|
|
&eb64p_mv,
|
|
|
|
&cabriolet_mv,
|
|
|
|
&cabriolet_mv /* AlphaPCI64 */
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct alpha_machine_vector *eb66_vecs[] __initdata =
|
|
|
|
{
|
|
|
|
&eb66_mv,
|
|
|
|
&eb66p_mv
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct alpha_machine_vector *marvel_vecs[] __initdata =
|
|
|
|
{
|
|
|
|
&marvel_ev7_mv,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct alpha_machine_vector *titan_vecs[] __initdata =
|
|
|
|
{
|
|
|
|
&titan_mv, /* default */
|
|
|
|
&privateer_mv, /* privateer */
|
|
|
|
&titan_mv, /* falcon */
|
|
|
|
&privateer_mv, /* granite */
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct alpha_machine_vector *tsunami_vecs[] __initdata =
|
|
|
|
{
|
|
|
|
NULL,
|
|
|
|
&dp264_mv, /* dp264 */
|
|
|
|
&dp264_mv, /* warhol */
|
|
|
|
&dp264_mv, /* windjammer */
|
|
|
|
&monet_mv, /* monet */
|
|
|
|
&clipper_mv, /* clipper */
|
|
|
|
&dp264_mv, /* goldrush */
|
|
|
|
&webbrick_mv, /* webbrick */
|
|
|
|
&dp264_mv, /* catamaran */
|
|
|
|
NULL, /* brisbane? */
|
|
|
|
NULL, /* melbourne? */
|
|
|
|
NULL, /* flying clipper? */
|
|
|
|
&shark_mv, /* shark */
|
|
|
|
};
|
|
|
|
|
|
|
|
/* ??? Do we need to distinguish between Rawhides? */
|
|
|
|
|
|
|
|
struct alpha_machine_vector *vec;
|
|
|
|
|
|
|
|
/* Search the system tables first... */
|
|
|
|
vec = NULL;
|
2006-07-30 03:03:23 -07:00
|
|
|
if (type < ARRAY_SIZE(systype_vecs)) {
|
2005-04-16 15:20:36 -07:00
|
|
|
vec = systype_vecs[type];
|
|
|
|
} else if ((type > ST_API_BIAS) &&
|
2006-07-30 03:03:23 -07:00
|
|
|
(type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) {
|
2005-04-16 15:20:36 -07:00
|
|
|
vec = api_vecs[type - ST_API_BIAS];
|
|
|
|
} else if ((type > ST_UNOFFICIAL_BIAS) &&
|
2006-07-30 03:03:23 -07:00
|
|
|
(type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) {
|
2005-04-16 15:20:36 -07:00
|
|
|
vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS];
|
|
|
|
}
|
|
|
|
|
|
|
|
/* If we've not found one, try for a variation. */
|
|
|
|
|
|
|
|
if (!vec) {
|
|
|
|
/* Member ID is a bit-field. */
|
|
|
|
unsigned long member = (variation >> 10) & 0x3f;
|
|
|
|
|
|
|
|
cpu &= 0xffffffff; /* make it usable */
|
|
|
|
|
|
|
|
switch (type) {
|
|
|
|
case ST_DEC_ALCOR:
|
2006-07-30 03:03:23 -07:00
|
|
|
if (member < ARRAY_SIZE(alcor_indices))
|
2005-04-16 15:20:36 -07:00
|
|
|
vec = alcor_vecs[alcor_indices[member]];
|
|
|
|
break;
|
|
|
|
case ST_DEC_EB164:
|
2006-07-30 03:03:23 -07:00
|
|
|
if (member < ARRAY_SIZE(eb164_indices))
|
2005-04-16 15:20:36 -07:00
|
|
|
vec = eb164_vecs[eb164_indices[member]];
|
|
|
|
/* PC164 may show as EB164 variation with EV56 CPU,
|
|
|
|
but, since no true EB164 had anything but EV5... */
|
|
|
|
if (vec == &eb164_mv && cpu == EV56_CPU)
|
|
|
|
vec = &pc164_mv;
|
|
|
|
break;
|
|
|
|
case ST_DEC_EB64P:
|
2006-07-30 03:03:23 -07:00
|
|
|
if (member < ARRAY_SIZE(eb64p_indices))
|
2005-04-16 15:20:36 -07:00
|
|
|
vec = eb64p_vecs[eb64p_indices[member]];
|
|
|
|
break;
|
|
|
|
case ST_DEC_EB66:
|
2006-07-30 03:03:23 -07:00
|
|
|
if (member < ARRAY_SIZE(eb66_indices))
|
2005-04-16 15:20:36 -07:00
|
|
|
vec = eb66_vecs[eb66_indices[member]];
|
|
|
|
break;
|
|
|
|
case ST_DEC_MARVEL:
|
2006-07-30 03:03:23 -07:00
|
|
|
if (member < ARRAY_SIZE(marvel_indices))
|
2005-04-16 15:20:36 -07:00
|
|
|
vec = marvel_vecs[marvel_indices[member]];
|
|
|
|
break;
|
|
|
|
case ST_DEC_TITAN:
|
|
|
|
vec = titan_vecs[0]; /* default */
|
2006-07-30 03:03:23 -07:00
|
|
|
if (member < ARRAY_SIZE(titan_indices))
|
2005-04-16 15:20:36 -07:00
|
|
|
vec = titan_vecs[titan_indices[member]];
|
|
|
|
break;
|
|
|
|
case ST_DEC_TSUNAMI:
|
2006-07-30 03:03:23 -07:00
|
|
|
if (member < ARRAY_SIZE(tsunami_indices))
|
2005-04-16 15:20:36 -07:00
|
|
|
vec = tsunami_vecs[tsunami_indices[member]];
|
|
|
|
break;
|
|
|
|
case ST_DEC_1000:
|
|
|
|
if (cpu == EV5_CPU || cpu == EV56_CPU)
|
|
|
|
vec = &mikasa_primo_mv;
|
|
|
|
else
|
|
|
|
vec = &mikasa_mv;
|
|
|
|
break;
|
|
|
|
case ST_DEC_NORITAKE:
|
|
|
|
if (cpu == EV5_CPU || cpu == EV56_CPU)
|
|
|
|
vec = &noritake_primo_mv;
|
|
|
|
else
|
|
|
|
vec = &noritake_mv;
|
|
|
|
break;
|
|
|
|
case ST_DEC_2100_A500:
|
|
|
|
if (cpu == EV5_CPU || cpu == EV56_CPU)
|
|
|
|
vec = &sable_gamma_mv;
|
|
|
|
else
|
|
|
|
vec = &sable_mv;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return vec;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct alpha_machine_vector * __init
|
|
|
|
get_sysvec_byname(const char *name)
|
|
|
|
{
|
|
|
|
static struct alpha_machine_vector *all_vecs[] __initdata =
|
|
|
|
{
|
|
|
|
&alcor_mv,
|
|
|
|
&alphabook1_mv,
|
|
|
|
&avanti_mv,
|
|
|
|
&cabriolet_mv,
|
|
|
|
&clipper_mv,
|
|
|
|
&dp264_mv,
|
|
|
|
&eb164_mv,
|
|
|
|
&eb64p_mv,
|
|
|
|
&eb66_mv,
|
|
|
|
&eb66p_mv,
|
|
|
|
&eiger_mv,
|
|
|
|
&jensen_mv,
|
|
|
|
&lx164_mv,
|
|
|
|
&lynx_mv,
|
|
|
|
&miata_mv,
|
|
|
|
&mikasa_mv,
|
|
|
|
&mikasa_primo_mv,
|
|
|
|
&monet_mv,
|
|
|
|
&nautilus_mv,
|
|
|
|
&noname_mv,
|
|
|
|
&noritake_mv,
|
|
|
|
&noritake_primo_mv,
|
|
|
|
&p2k_mv,
|
|
|
|
&pc164_mv,
|
|
|
|
&privateer_mv,
|
|
|
|
&rawhide_mv,
|
|
|
|
&ruffian_mv,
|
|
|
|
&rx164_mv,
|
|
|
|
&sable_mv,
|
|
|
|
&sable_gamma_mv,
|
|
|
|
&shark_mv,
|
|
|
|
&sx164_mv,
|
|
|
|
&takara_mv,
|
|
|
|
&webbrick_mv,
|
|
|
|
&wildfire_mv,
|
|
|
|
&xl_mv,
|
|
|
|
&xlt_mv
|
|
|
|
};
|
|
|
|
|
|
|
|
size_t i;
|
|
|
|
|
2006-07-30 03:03:23 -07:00
|
|
|
for (i = 0; i < ARRAY_SIZE(all_vecs); ++i) {
|
2005-04-16 15:20:36 -07:00
|
|
|
struct alpha_machine_vector *mv = all_vecs[i];
|
|
|
|
if (strcasecmp(mv->vector_name, name) == 0)
|
|
|
|
return mv;
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu,
|
|
|
|
char **type_name, char **variation_name)
|
|
|
|
{
|
|
|
|
unsigned long member;
|
|
|
|
|
|
|
|
/* If not in the tables, make it UNKNOWN,
|
|
|
|
else set type name to family */
|
2006-07-30 03:03:23 -07:00
|
|
|
if (type < ARRAY_SIZE(systype_names)) {
|
2005-04-16 15:20:36 -07:00
|
|
|
*type_name = systype_names[type];
|
|
|
|
} else if ((type > ST_API_BIAS) &&
|
2006-07-30 03:03:23 -07:00
|
|
|
(type - ST_API_BIAS) < ARRAY_SIZE(api_names)) {
|
2005-04-16 15:20:36 -07:00
|
|
|
*type_name = api_names[type - ST_API_BIAS];
|
|
|
|
} else if ((type > ST_UNOFFICIAL_BIAS) &&
|
2006-07-30 03:03:23 -07:00
|
|
|
(type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) {
|
2005-04-16 15:20:36 -07:00
|
|
|
*type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS];
|
|
|
|
} else {
|
|
|
|
*type_name = sys_unknown;
|
|
|
|
*variation_name = sys_unknown;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Set variation to "0"; if variation is zero, done. */
|
|
|
|
*variation_name = systype_names[0];
|
|
|
|
if (variation == 0) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
member = (variation >> 10) & 0x3f; /* member ID is a bit-field */
|
|
|
|
|
|
|
|
cpu &= 0xffffffff; /* make it usable */
|
|
|
|
|
|
|
|
switch (type) { /* select by family */
|
|
|
|
default: /* default to variation "0" for now */
|
|
|
|
break;
|
|
|
|
case ST_DEC_EB164:
|
2006-07-30 03:03:23 -07:00
|
|
|
if (member < ARRAY_SIZE(eb164_indices))
|
2005-04-16 15:20:36 -07:00
|
|
|
*variation_name = eb164_names[eb164_indices[member]];
|
|
|
|
/* PC164 may show as EB164 variation, but with EV56 CPU,
|
|
|
|
so, since no true EB164 had anything but EV5... */
|
|
|
|
if (eb164_indices[member] == 0 && cpu == EV56_CPU)
|
|
|
|
*variation_name = eb164_names[1]; /* make it PC164 */
|
|
|
|
break;
|
|
|
|
case ST_DEC_ALCOR:
|
2006-07-30 03:03:23 -07:00
|
|
|
if (member < ARRAY_SIZE(alcor_indices))
|
2005-04-16 15:20:36 -07:00
|
|
|
*variation_name = alcor_names[alcor_indices[member]];
|
|
|
|
break;
|
|
|
|
case ST_DEC_EB64P:
|
2006-07-30 03:03:23 -07:00
|
|
|
if (member < ARRAY_SIZE(eb64p_indices))
|
2005-04-16 15:20:36 -07:00
|
|
|
*variation_name = eb64p_names[eb64p_indices[member]];
|
|
|
|
break;
|
|
|
|
case ST_DEC_EB66:
|
2006-07-30 03:03:23 -07:00
|
|
|
if (member < ARRAY_SIZE(eb66_indices))
|
2005-04-16 15:20:36 -07:00
|
|
|
*variation_name = eb66_names[eb66_indices[member]];
|
|
|
|
break;
|
|
|
|
case ST_DEC_MARVEL:
|
2006-07-30 03:03:23 -07:00
|
|
|
if (member < ARRAY_SIZE(marvel_indices))
|
2005-04-16 15:20:36 -07:00
|
|
|
*variation_name = marvel_names[marvel_indices[member]];
|
|
|
|
break;
|
|
|
|
case ST_DEC_RAWHIDE:
|
2006-07-30 03:03:23 -07:00
|
|
|
if (member < ARRAY_SIZE(rawhide_indices))
|
2005-04-16 15:20:36 -07:00
|
|
|
*variation_name = rawhide_names[rawhide_indices[member]];
|
|
|
|
break;
|
|
|
|
case ST_DEC_TITAN:
|
|
|
|
*variation_name = titan_names[0]; /* default */
|
2006-07-30 03:03:23 -07:00
|
|
|
if (member < ARRAY_SIZE(titan_indices))
|
2005-04-16 15:20:36 -07:00
|
|
|
*variation_name = titan_names[titan_indices[member]];
|
|
|
|
break;
|
|
|
|
case ST_DEC_TSUNAMI:
|
2006-07-30 03:03:23 -07:00
|
|
|
if (member < ARRAY_SIZE(tsunami_indices))
|
2005-04-16 15:20:36 -07:00
|
|
|
*variation_name = tsunami_names[tsunami_indices[member]];
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* A change was made to the HWRPB via an ECO and the following code
|
|
|
|
* tracks a part of the ECO. In HWRPB versions less than 5, the ECO
|
|
|
|
* was not implemented in the console firmware. If it's revision 5 or
|
|
|
|
* greater we can get the name of the platform as an ASCII string from
|
|
|
|
* the HWRPB. That's what this function does. It checks the revision
|
|
|
|
* level and if the string is in the HWRPB it returns the address of
|
|
|
|
* the string--a pointer to the name of the platform.
|
|
|
|
*
|
|
|
|
* Returns:
|
|
|
|
* - Pointer to a ASCII string if it's in the HWRPB
|
|
|
|
* - Pointer to a blank string if the data is not in the HWRPB.
|
|
|
|
*/
|
|
|
|
|
|
|
|
static char *
|
|
|
|
platform_string(void)
|
|
|
|
{
|
|
|
|
struct dsr_struct *dsr;
|
|
|
|
static char unk_system_string[] = "N/A";
|
|
|
|
|
|
|
|
/* Go to the console for the string pointer.
|
|
|
|
* If the rpb_vers is not 5 or greater the rpb
|
|
|
|
* is old and does not have this data in it.
|
|
|
|
*/
|
|
|
|
if (hwrpb->revision < 5)
|
|
|
|
return (unk_system_string);
|
|
|
|
else {
|
|
|
|
/* The Dynamic System Recognition struct
|
|
|
|
* has the system platform name starting
|
|
|
|
* after the character count of the string.
|
|
|
|
*/
|
|
|
|
dsr = ((struct dsr_struct *)
|
|
|
|
((char *)hwrpb + hwrpb->dsr_offset));
|
|
|
|
return ((char *)dsr + (dsr->sysname_off +
|
|
|
|
sizeof(long)));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
get_nr_processors(struct percpu_struct *cpubase, unsigned long num)
|
|
|
|
{
|
|
|
|
struct percpu_struct *cpu;
|
|
|
|
unsigned long i;
|
|
|
|
int count = 0;
|
|
|
|
|
|
|
|
for (i = 0; i < num; i++) {
|
|
|
|
cpu = (struct percpu_struct *)
|
|
|
|
((char *)cpubase + i*hwrpb->processor_size);
|
|
|
|
if ((cpu->flags & 0x1cc) == 0x1cc)
|
|
|
|
count++;
|
|
|
|
}
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
show_cache_size (struct seq_file *f, const char *which, int shape)
|
|
|
|
{
|
|
|
|
if (shape == -1)
|
|
|
|
seq_printf (f, "%s\t\t: n/a\n", which);
|
|
|
|
else if (shape == 0)
|
|
|
|
seq_printf (f, "%s\t\t: unknown\n", which);
|
|
|
|
else
|
|
|
|
seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n",
|
|
|
|
which, shape >> 10, shape & 15,
|
|
|
|
1 << ((shape >> 4) & 15));
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
show_cpuinfo(struct seq_file *f, void *slot)
|
|
|
|
{
|
|
|
|
extern struct unaligned_stat {
|
|
|
|
unsigned long count, va, pc;
|
|
|
|
} unaligned[2];
|
|
|
|
|
|
|
|
static char cpu_names[][8] = {
|
|
|
|
"EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56",
|
|
|
|
"EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL",
|
|
|
|
"EV68CX", "EV7", "EV79", "EV69"
|
|
|
|
};
|
|
|
|
|
|
|
|
struct percpu_struct *cpu = slot;
|
|
|
|
unsigned int cpu_index;
|
|
|
|
char *cpu_name;
|
|
|
|
char *systype_name;
|
|
|
|
char *sysvariation_name;
|
|
|
|
int nr_processors;
|
|
|
|
|
|
|
|
cpu_index = (unsigned) (cpu->type - 1);
|
|
|
|
cpu_name = "Unknown";
|
2006-07-30 03:03:23 -07:00
|
|
|
if (cpu_index < ARRAY_SIZE(cpu_names))
|
2005-04-16 15:20:36 -07:00
|
|
|
cpu_name = cpu_names[cpu_index];
|
|
|
|
|
|
|
|
get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
|
|
|
|
cpu->type, &systype_name, &sysvariation_name);
|
|
|
|
|
|
|
|
nr_processors = get_nr_processors(cpu, hwrpb->nr_processors);
|
|
|
|
|
|
|
|
seq_printf(f, "cpu\t\t\t: Alpha\n"
|
|
|
|
"cpu model\t\t: %s\n"
|
|
|
|
"cpu variation\t\t: %ld\n"
|
|
|
|
"cpu revision\t\t: %ld\n"
|
|
|
|
"cpu serial number\t: %s\n"
|
|
|
|
"system type\t\t: %s\n"
|
|
|
|
"system variation\t: %s\n"
|
|
|
|
"system revision\t\t: %ld\n"
|
|
|
|
"system serial number\t: %s\n"
|
|
|
|
"cycle frequency [Hz]\t: %lu %s\n"
|
|
|
|
"timer frequency [Hz]\t: %lu.%02lu\n"
|
|
|
|
"page size [bytes]\t: %ld\n"
|
|
|
|
"phys. address bits\t: %ld\n"
|
|
|
|
"max. addr. space #\t: %ld\n"
|
|
|
|
"BogoMIPS\t\t: %lu.%02lu\n"
|
|
|
|
"kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
|
|
|
|
"user unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
|
|
|
|
"platform string\t\t: %s\n"
|
|
|
|
"cpus detected\t\t: %d\n",
|
|
|
|
cpu_name, cpu->variation, cpu->revision,
|
|
|
|
(char*)cpu->serial_no,
|
|
|
|
systype_name, sysvariation_name, hwrpb->sys_revision,
|
|
|
|
(char*)hwrpb->ssn,
|
|
|
|
est_cycle_freq ? : hwrpb->cycle_freq,
|
|
|
|
est_cycle_freq ? "est." : "",
|
|
|
|
hwrpb->intr_freq / 4096,
|
|
|
|
(100 * hwrpb->intr_freq / 4096) % 100,
|
|
|
|
hwrpb->pagesize,
|
|
|
|
hwrpb->pa_bits,
|
|
|
|
hwrpb->max_asn,
|
|
|
|
loops_per_jiffy / (500000/HZ),
|
|
|
|
(loops_per_jiffy / (5000/HZ)) % 100,
|
|
|
|
unaligned[0].count, unaligned[0].pc, unaligned[0].va,
|
|
|
|
unaligned[1].count, unaligned[1].pc, unaligned[1].va,
|
|
|
|
platform_string(), nr_processors);
|
|
|
|
|
|
|
|
#ifdef CONFIG_SMP
|
|
|
|
seq_printf(f, "cpus active\t\t: %d\n"
|
|
|
|
"cpu active mask\t\t: %016lx\n",
|
|
|
|
num_online_cpus(), cpus_addr(cpu_possible_map)[0]);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape);
|
|
|
|
show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape);
|
|
|
|
show_cache_size (f, "L2 cache", alpha_l2_cacheshape);
|
|
|
|
show_cache_size (f, "L3 cache", alpha_l3_cacheshape);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __init
|
|
|
|
read_mem_block(int *addr, int stride, int size)
|
|
|
|
{
|
|
|
|
long nloads = size / stride, cnt, tmp;
|
|
|
|
|
|
|
|
__asm__ __volatile__(
|
|
|
|
" rpcc %0\n"
|
|
|
|
"1: ldl %3,0(%2)\n"
|
|
|
|
" subq %1,1,%1\n"
|
|
|
|
/* Next two XORs introduce an explicit data dependency between
|
|
|
|
consecutive loads in the loop, which will give us true load
|
|
|
|
latency. */
|
|
|
|
" xor %3,%2,%2\n"
|
|
|
|
" xor %3,%2,%2\n"
|
|
|
|
" addq %2,%4,%2\n"
|
|
|
|
" bne %1,1b\n"
|
|
|
|
" rpcc %3\n"
|
|
|
|
" subl %3,%0,%0\n"
|
|
|
|
: "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp)
|
|
|
|
: "r" (stride), "1" (nloads), "2" (addr));
|
|
|
|
|
|
|
|
return cnt / (size / stride);
|
|
|
|
}
|
|
|
|
|
|
|
|
#define CSHAPE(totalsize, linesize, assoc) \
|
|
|
|
((totalsize & ~0xff) | (linesize << 4) | assoc)
|
|
|
|
|
|
|
|
/* ??? EV5 supports up to 64M, but did the systems with more than
|
|
|
|
16M of BCACHE ever exist? */
|
|
|
|
#define MAX_BCACHE_SIZE 16*1024*1024
|
|
|
|
|
|
|
|
/* Note that the offchip caches are direct mapped on all Alphas. */
|
|
|
|
static int __init
|
|
|
|
external_cache_probe(int minsize, int width)
|
|
|
|
{
|
|
|
|
int cycles, prev_cycles = 1000000;
|
|
|
|
int stride = 1 << width;
|
|
|
|
long size = minsize, maxsize = MAX_BCACHE_SIZE * 2;
|
|
|
|
|
|
|
|
if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT)
|
|
|
|
maxsize = 1 << (floor_log2(max_low_pfn + 1) + PAGE_SHIFT);
|
|
|
|
|
|
|
|
/* Get the first block cached. */
|
|
|
|
read_mem_block(__va(0), stride, size);
|
|
|
|
|
|
|
|
while (size < maxsize) {
|
|
|
|
/* Get an average load latency in cycles. */
|
|
|
|
cycles = read_mem_block(__va(0), stride, size);
|
|
|
|
if (cycles > prev_cycles * 2) {
|
|
|
|
/* Fine, we exceed the cache. */
|
|
|
|
printk("%ldK Bcache detected; load hit latency %d "
|
|
|
|
"cycles, load miss latency %d cycles\n",
|
|
|
|
size >> 11, prev_cycles, cycles);
|
|
|
|
return CSHAPE(size >> 1, width, 1);
|
|
|
|
}
|
|
|
|
/* Try to get the next block cached. */
|
|
|
|
read_mem_block(__va(size), stride, size);
|
|
|
|
prev_cycles = cycles;
|
|
|
|
size <<= 1;
|
|
|
|
}
|
|
|
|
return -1; /* No BCACHE found. */
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __init
|
|
|
|
determine_cpu_caches (unsigned int cpu_type)
|
|
|
|
{
|
|
|
|
int L1I, L1D, L2, L3;
|
|
|
|
|
|
|
|
switch (cpu_type) {
|
|
|
|
case EV4_CPU:
|
|
|
|
case EV45_CPU:
|
|
|
|
{
|
|
|
|
if (cpu_type == EV4_CPU)
|
|
|
|
L1I = CSHAPE(8*1024, 5, 1);
|
|
|
|
else
|
|
|
|
L1I = CSHAPE(16*1024, 5, 1);
|
|
|
|
L1D = L1I;
|
|
|
|
L3 = -1;
|
|
|
|
|
|
|
|
/* BIU_CTL is a write-only Abox register. PALcode has a
|
|
|
|
shadow copy, and may be available from some versions
|
|
|
|
of the CSERVE PALcall. If we can get it, then
|
|
|
|
|
|
|
|
unsigned long biu_ctl, size;
|
|
|
|
size = 128*1024 * (1 << ((biu_ctl >> 28) & 7));
|
|
|
|
L2 = CSHAPE (size, 5, 1);
|
|
|
|
|
|
|
|
Unfortunately, we can't rely on that.
|
|
|
|
*/
|
|
|
|
L2 = external_cache_probe(128*1024, 5);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case LCA4_CPU:
|
|
|
|
{
|
|
|
|
unsigned long car, size;
|
|
|
|
|
|
|
|
L1I = L1D = CSHAPE(8*1024, 5, 1);
|
|
|
|
L3 = -1;
|
|
|
|
|
|
|
|
car = *(vuip) phys_to_virt (0x120000078UL);
|
|
|
|
size = 64*1024 * (1 << ((car >> 5) & 7));
|
|
|
|
/* No typo -- 8 byte cacheline size. Whodathunk. */
|
|
|
|
L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case EV5_CPU:
|
|
|
|
case EV56_CPU:
|
|
|
|
{
|
|
|
|
unsigned long sc_ctl, width;
|
|
|
|
|
|
|
|
L1I = L1D = CSHAPE(8*1024, 5, 1);
|
|
|
|
|
|
|
|
/* Check the line size of the Scache. */
|
|
|
|
sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL);
|
|
|
|
width = sc_ctl & 0x1000 ? 6 : 5;
|
|
|
|
L2 = CSHAPE (96*1024, width, 3);
|
|
|
|
|
|
|
|
/* BC_CONTROL and BC_CONFIG are write-only IPRs. PALcode
|
|
|
|
has a shadow copy, and may be available from some versions
|
|
|
|
of the CSERVE PALcall. If we can get it, then
|
|
|
|
|
|
|
|
unsigned long bc_control, bc_config, size;
|
|
|
|
size = 1024*1024 * (1 << ((bc_config & 7) - 1));
|
|
|
|
L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1);
|
|
|
|
|
|
|
|
Unfortunately, we can't rely on that.
|
|
|
|
*/
|
|
|
|
L3 = external_cache_probe(1024*1024, width);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case PCA56_CPU:
|
|
|
|
case PCA57_CPU:
|
|
|
|
{
|
|
|
|
unsigned long cbox_config, size;
|
|
|
|
|
|
|
|
if (cpu_type == PCA56_CPU) {
|
|
|
|
L1I = CSHAPE(16*1024, 6, 1);
|
|
|
|
L1D = CSHAPE(8*1024, 5, 1);
|
|
|
|
} else {
|
|
|
|
L1I = CSHAPE(32*1024, 6, 2);
|
|
|
|
L1D = CSHAPE(16*1024, 5, 1);
|
|
|
|
}
|
|
|
|
L3 = -1;
|
|
|
|
|
|
|
|
cbox_config = *(vulp) phys_to_virt (0xfffff00008UL);
|
|
|
|
size = 512*1024 * (1 << ((cbox_config >> 12) & 3));
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1);
|
|
|
|
#else
|
|
|
|
L2 = external_cache_probe(512*1024, 6);
|
|
|
|
#endif
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case EV6_CPU:
|
|
|
|
case EV67_CPU:
|
|
|
|
case EV68CB_CPU:
|
|
|
|
case EV68AL_CPU:
|
|
|
|
case EV68CX_CPU:
|
|
|
|
case EV69_CPU:
|
|
|
|
L1I = L1D = CSHAPE(64*1024, 6, 2);
|
|
|
|
L2 = external_cache_probe(1024*1024, 6);
|
|
|
|
L3 = -1;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case EV7_CPU:
|
|
|
|
case EV79_CPU:
|
|
|
|
L1I = L1D = CSHAPE(64*1024, 6, 2);
|
|
|
|
L2 = CSHAPE(7*1024*1024/4, 6, 7);
|
|
|
|
L3 = -1;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
/* Nothing known about this cpu type. */
|
|
|
|
L1I = L1D = L2 = L3 = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
alpha_l1i_cacheshape = L1I;
|
|
|
|
alpha_l1d_cacheshape = L1D;
|
|
|
|
alpha_l2_cacheshape = L2;
|
|
|
|
alpha_l3_cacheshape = L3;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We show only CPU #0 info.
|
|
|
|
*/
|
|
|
|
static void *
|
|
|
|
c_start(struct seq_file *f, loff_t *pos)
|
|
|
|
{
|
|
|
|
return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void *
|
|
|
|
c_next(struct seq_file *f, void *v, loff_t *pos)
|
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
c_stop(struct seq_file *f, void *v)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
struct seq_operations cpuinfo_op = {
|
|
|
|
.start = c_start,
|
|
|
|
.next = c_next,
|
|
|
|
.stop = c_stop,
|
|
|
|
.show = show_cpuinfo,
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
|
|
|
|
{
|
|
|
|
#if 1
|
|
|
|
/* FIXME FIXME FIXME */
|
|
|
|
/* If we are using SRM and serial console, just hard halt here. */
|
|
|
|
if (alpha_using_srm && srmcons_output)
|
|
|
|
__halt();
|
|
|
|
#endif
|
|
|
|
return NOTIFY_DONE;
|
|
|
|
}
|
2006-03-13 22:11:50 -07:00
|
|
|
|
|
|
|
static __init int add_pcspkr(void)
|
|
|
|
{
|
|
|
|
struct platform_device *pd;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
pd = platform_device_alloc("pcspkr", -1);
|
|
|
|
if (!pd)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
ret = platform_device_add(pd);
|
|
|
|
if (ret)
|
|
|
|
platform_device_put(pd);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
device_initcall(add_pcspkr);
|