1993-06-12 14:58:17 +00:00
|
|
|
/*-
|
|
|
|
* Copyright (c) 1990 William Jolitz.
|
|
|
|
* Copyright (c) 1991 The Regents of the University of California.
|
|
|
|
* All rights reserved.
|
|
|
|
*
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
* modification, are permitted provided that the following conditions
|
|
|
|
* are met:
|
|
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer.
|
|
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
|
|
* documentation and/or other materials provided with the distribution.
|
|
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
|
|
* must display the following acknowledgement:
|
|
|
|
* This product includes software developed by the University of
|
|
|
|
* California, Berkeley and its contributors.
|
|
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
|
|
* may be used to endorse or promote products derived from this software
|
|
|
|
* without specific prior written permission.
|
|
|
|
*
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
|
|
* SUCH DAMAGE.
|
|
|
|
*
|
ALL:
Removed patch kit headers and rcsid strings, add $Id$.
isa.c:
Removed old #ifdef notyet isa_configure code, since it will never be
used, and I have done 90% of what it attempted to.
Add conflict checking code that searchs back through the devtab's looking
for any device that has already been found that may conflict with what
we are about to probe. Checks are mode for I/O address, memory address,
IRQ, and DRQ. This should stop the screwing up of any device that has
alread been found by other device probes.
Print out messages when we are not going to probe a device due to
a conflict so the user knows WHY something was not found. For example:
aha0 not probed due to irq conflict with ahb0 at 11
Now print out a message when a device is not found so the user knows
that it was probed for, but could not be found. For example:
ed1 not found at 0x320
For devices that have I/O address < 0x100 say that they are on the
motherboard, not on isa! The 0x100 magic number is per ISA spec. It
may seem funny that pc0 and sc0 report as being on the motherboard, but
this is due to the fact that the I/O address used is that of the keyboard
controller which IS on the motherboard. We really need to split the
keyboard probe from the display probe. It is completly legal to build
a pc with out one or the other, or even with out both!
npx.c:
Return -1 from the probe routine if we are using the Emulator so
that the i/o addresses are not printed, this is the same trick used
for 486's.
Do not print the ``Errors reported via Exception 16'', and
``Errors reported via IRQ 13'' messages any more, since these just lead
to more user confusion that anything. It still prints the message
``Error reporting broken, using 387 emulator'' so that the person is
aware that there mother board is ill.
1993-10-13 15:59:30 +00:00
|
|
|
* from: @(#)npx.c 7.2 (Berkeley) 5/12/91
|
1999-08-28 01:08:13 +00:00
|
|
|
* $FreeBSD$
|
1993-06-12 14:58:17 +00:00
|
|
|
*/
|
|
|
|
|
1998-01-31 07:23:16 +00:00
|
|
|
#include "opt_debug_npx.h"
|
2002-01-30 12:41:12 +00:00
|
|
|
#include "opt_isa.h"
|
1996-01-04 19:51:50 +00:00
|
|
|
|
1994-08-13 03:50:34 +00:00
|
|
|
#include <sys/param.h>
|
|
|
|
#include <sys/systm.h>
|
1999-04-16 21:22:55 +00:00
|
|
|
#include <sys/bus.h>
|
1995-10-28 13:07:28 +00:00
|
|
|
#include <sys/kernel.h>
|
2001-05-01 08:13:21 +00:00
|
|
|
#include <sys/lock.h>
|
1998-02-12 21:41:10 +00:00
|
|
|
#include <sys/malloc.h>
|
1999-04-16 21:22:55 +00:00
|
|
|
#include <sys/module.h>
|
2001-01-20 02:30:58 +00:00
|
|
|
#include <sys/mutex.h>
|
2001-05-01 08:13:21 +00:00
|
|
|
#include <sys/mutex.h>
|
|
|
|
#include <sys/proc.h>
|
|
|
|
#include <sys/sysctl.h>
|
1999-04-16 21:22:55 +00:00
|
|
|
#include <machine/bus.h>
|
|
|
|
#include <sys/rman.h>
|
1997-01-29 13:46:28 +00:00
|
|
|
#ifdef NPX_DEBUG
|
1994-11-14 14:59:06 +00:00
|
|
|
#include <sys/syslog.h>
|
1997-01-29 13:46:28 +00:00
|
|
|
#endif
|
1994-11-14 14:59:06 +00:00
|
|
|
#include <sys/signalvar.h>
|
2001-05-20 20:04:40 +00:00
|
|
|
#include <sys/user.h>
|
1994-10-23 21:28:03 +00:00
|
|
|
|
1997-10-28 11:43:57 +00:00
|
|
|
#include <machine/cputypes.h>
|
|
|
|
#include <machine/frame.h>
|
1996-06-25 20:31:01 +00:00
|
|
|
#include <machine/md_var.h>
|
1997-05-31 09:27:31 +00:00
|
|
|
#include <machine/pcb.h>
|
1997-10-28 11:43:57 +00:00
|
|
|
#include <machine/psl.h>
|
1999-04-16 21:22:55 +00:00
|
|
|
#include <machine/resource.h>
|
1994-08-13 03:50:34 +00:00
|
|
|
#include <machine/specialreg.h>
|
1997-10-28 11:43:57 +00:00
|
|
|
#include <machine/segments.h>
|
2002-09-16 19:25:59 +00:00
|
|
|
#include <machine/ucontext.h>
|
1994-10-23 21:28:03 +00:00
|
|
|
|
2003-05-01 01:05:25 +00:00
|
|
|
#include <amd64/isa/intr_machdep.h>
|
2002-01-30 12:41:12 +00:00
|
|
|
#ifdef DEV_ISA
|
2000-05-04 23:57:32 +00:00
|
|
|
#include <isa/isavar.h>
|
2002-01-30 12:41:12 +00:00
|
|
|
#endif
|
1993-06-12 14:58:17 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* 387 and 287 Numeric Coprocessor Extension (NPX) Driver.
|
|
|
|
*/
|
|
|
|
|
2002-10-20 17:30:30 +00:00
|
|
|
#if defined(__GNUC__) && !defined(lint)
|
1993-06-12 14:58:17 +00:00
|
|
|
|
1995-01-03 04:00:06 +00:00
|
|
|
#define fldcw(addr) __asm("fldcw %0" : : "m" (*(addr)))
|
1993-06-12 14:58:17 +00:00
|
|
|
#define fnclex() __asm("fnclex")
|
|
|
|
#define fninit() __asm("fninit")
|
1998-04-15 18:58:09 +00:00
|
|
|
#define fnstcw(addr) __asm __volatile("fnstcw %0" : "=m" (*(addr)))
|
|
|
|
#define fnstsw(addr) __asm __volatile("fnstsw %0" : "=m" (*(addr)))
|
2001-07-12 06:32:51 +00:00
|
|
|
#define fxrstor(addr) __asm("fxrstor %0" : : "m" (*(addr)))
|
|
|
|
#define fxsave(addr) __asm __volatile("fxsave %0" : "=m" (*(addr)))
|
1993-06-12 14:58:17 +00:00
|
|
|
#define start_emulating() __asm("smsw %%ax; orb %0,%%al; lmsw %%ax" \
|
|
|
|
: : "n" (CR0_TS) : "ax")
|
|
|
|
#define stop_emulating() __asm("clts")
|
|
|
|
|
|
|
|
#else /* not __GNUC__ */
|
|
|
|
|
2002-03-23 16:01:49 +00:00
|
|
|
void fldcw(caddr_t addr);
|
|
|
|
void fnclex(void);
|
|
|
|
void fninit(void);
|
|
|
|
void fnstcw(caddr_t addr);
|
|
|
|
void fnstsw(caddr_t addr);
|
|
|
|
void fxsave(caddr_t addr);
|
|
|
|
void fxrstor(caddr_t addr);
|
|
|
|
void start_emulating(void);
|
|
|
|
void stop_emulating(void);
|
1993-06-12 14:58:17 +00:00
|
|
|
|
|
|
|
#endif /* __GNUC__ */
|
|
|
|
|
2003-05-01 01:05:25 +00:00
|
|
|
#define GET_FPU_CW(thread) ((thread)->td_pcb->pcb_save.sv_env.en_cw)
|
|
|
|
#define GET_FPU_SW(thread) ((thread)->td_pcb->pcb_save.sv_env.en_sw)
|
2001-07-12 06:32:51 +00:00
|
|
|
|
1993-06-12 14:58:17 +00:00
|
|
|
typedef u_char bool_t;
|
|
|
|
|
2002-03-23 16:01:49 +00:00
|
|
|
static int npx_attach(device_t dev);
|
|
|
|
static void npx_identify(driver_t *driver, device_t parent);
|
|
|
|
static int npx_probe(device_t dev);
|
1995-10-28 13:07:28 +00:00
|
|
|
|
2003-05-01 01:05:25 +00:00
|
|
|
int hw_float = 1;
|
1995-10-28 13:07:28 +00:00
|
|
|
SYSCTL_INT(_hw,HW_FLOATINGPT, floatingpoint,
|
|
|
|
CTLFLAG_RD, &hw_float, 0,
|
|
|
|
"Floatingpoint instructions executed in hardware");
|
|
|
|
|
2003-05-01 01:05:25 +00:00
|
|
|
static struct savefpu npx_cleanstate;
|
2002-09-16 19:25:59 +00:00
|
|
|
static bool_t npx_cleanstate_ready;
|
1997-07-21 07:57:50 +00:00
|
|
|
|
1999-08-22 19:52:51 +00:00
|
|
|
/*
|
|
|
|
* Identify routine. Create a connection point on our parent for probing.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
npx_identify(driver, parent)
|
|
|
|
driver_t *driver;
|
|
|
|
device_t parent;
|
|
|
|
{
|
|
|
|
device_t child;
|
|
|
|
|
|
|
|
child = BUS_ADD_CHILD(parent, 0, "npx", 0);
|
|
|
|
if (child == NULL)
|
|
|
|
panic("npx_identify");
|
|
|
|
}
|
|
|
|
|
1993-06-12 14:58:17 +00:00
|
|
|
/*
|
|
|
|
* Probe routine. Initialize cr0 to give correct behaviour for [f]wait
|
2003-05-01 01:05:25 +00:00
|
|
|
* whether the device exists or not (XXX should be elsewhere).
|
|
|
|
* Modify device struct if npx doesn't need to use interrupts.
|
|
|
|
* Return 0 if device exists.
|
1993-06-12 14:58:17 +00:00
|
|
|
*/
|
|
|
|
static int
|
1999-04-16 21:22:55 +00:00
|
|
|
npx_probe(dev)
|
|
|
|
device_t dev;
|
1993-06-12 14:58:17 +00:00
|
|
|
{
|
1995-01-03 04:00:06 +00:00
|
|
|
|
1993-06-12 14:58:17 +00:00
|
|
|
/*
|
|
|
|
* Partially reset the coprocessor, if any. Some BIOS's don't reset
|
|
|
|
* it after a warm boot.
|
|
|
|
*/
|
|
|
|
outb(0xf1, 0); /* full reset on some systems, NOP on others */
|
|
|
|
outb(0xf0, 0); /* clear BUSY# latch */
|
|
|
|
/*
|
|
|
|
* Prepare to trap all ESC (i.e., NPX) instructions and all WAIT
|
|
|
|
* instructions. We must set the CR0_MP bit and use the CR0_TS
|
|
|
|
* bit to control the trap, because setting the CR0_EM bit does
|
|
|
|
* not cause WAIT instructions to trap. It's important to trap
|
|
|
|
* WAIT instructions - otherwise the "wait" variants of no-wait
|
|
|
|
* control instructions would degenerate to the "no-wait" variants
|
|
|
|
* after FP context switches but work correctly otherwise. It's
|
|
|
|
* particularly important to trap WAITs when there is no NPX -
|
|
|
|
* otherwise the "wait" variants would always degenerate.
|
|
|
|
*
|
|
|
|
* Try setting CR0_NE to get correct error reporting on 486DX's.
|
|
|
|
* Setting it should fail or do nothing on lesser processors.
|
|
|
|
*/
|
|
|
|
load_cr0(rcr0() | CR0_MP | CR0_NE);
|
|
|
|
/*
|
|
|
|
* But don't trap while we're probing.
|
|
|
|
*/
|
|
|
|
stop_emulating();
|
|
|
|
/*
|
2003-05-01 01:05:25 +00:00
|
|
|
* Finish resetting the coprocessor.
|
1993-06-12 14:58:17 +00:00
|
|
|
*/
|
|
|
|
fninit();
|
1997-07-21 07:57:50 +00:00
|
|
|
|
2001-10-16 14:12:35 +00:00
|
|
|
device_set_desc(dev, "math processor");
|
|
|
|
|
1999-04-16 21:22:55 +00:00
|
|
|
return (0);
|
1993-06-12 14:58:17 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Attach routine - announce which it is, and wire into system
|
|
|
|
*/
|
2002-09-28 17:15:38 +00:00
|
|
|
static int
|
1999-04-16 21:22:55 +00:00
|
|
|
npx_attach(dev)
|
|
|
|
device_t dev;
|
1993-06-12 14:58:17 +00:00
|
|
|
{
|
2002-09-16 19:25:59 +00:00
|
|
|
register_t s;
|
1999-07-25 13:16:09 +00:00
|
|
|
|
2003-05-01 01:05:25 +00:00
|
|
|
device_printf(dev, "INT 16 interface\n");
|
1993-06-12 14:58:17 +00:00
|
|
|
npxinit(__INITIAL_NPXCW__);
|
1996-11-11 20:39:03 +00:00
|
|
|
|
2002-09-16 19:25:59 +00:00
|
|
|
if (npx_cleanstate_ready == 0) {
|
|
|
|
s = intr_disable();
|
|
|
|
stop_emulating();
|
2003-05-01 01:05:25 +00:00
|
|
|
fxsave(&npx_cleanstate);
|
2002-09-16 19:25:59 +00:00
|
|
|
start_emulating();
|
|
|
|
npx_cleanstate_ready = 1;
|
|
|
|
intr_restore(s);
|
|
|
|
}
|
1999-04-16 21:22:55 +00:00
|
|
|
return (0); /* XXX unused */
|
1993-06-12 14:58:17 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Initialize floating point unit.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
npxinit(control)
|
1995-01-03 04:00:06 +00:00
|
|
|
u_short control;
|
1993-06-12 14:58:17 +00:00
|
|
|
{
|
2003-05-01 01:05:25 +00:00
|
|
|
static struct savefpu dummy;
|
2002-03-21 06:19:08 +00:00
|
|
|
register_t savecrit;
|
1993-06-12 14:58:17 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* fninit has the same h/w bugs as fnsave. Use the detoxified
|
1995-01-03 04:00:06 +00:00
|
|
|
* fnsave to throw away any junk in the fpu. npxsave() initializes
|
2001-12-11 23:33:44 +00:00
|
|
|
* the fpu and sets fpcurthread = NULL as important side effects.
|
1993-06-12 14:58:17 +00:00
|
|
|
*/
|
2002-03-21 06:19:08 +00:00
|
|
|
savecrit = intr_disable();
|
1993-06-12 14:58:17 +00:00
|
|
|
npxsave(&dummy);
|
|
|
|
stop_emulating();
|
2001-10-15 20:18:06 +00:00
|
|
|
/* XXX npxsave() doesn't actually initialize the fpu in the SSE case. */
|
2003-05-01 01:05:25 +00:00
|
|
|
fninit();
|
1993-06-12 14:58:17 +00:00
|
|
|
fldcw(&control);
|
|
|
|
start_emulating();
|
2002-03-21 06:19:08 +00:00
|
|
|
intr_restore(savecrit);
|
1993-06-12 14:58:17 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Free coprocessor (if we have it).
|
|
|
|
*/
|
|
|
|
void
|
2001-09-12 08:38:13 +00:00
|
|
|
npxexit(td)
|
|
|
|
struct thread *td;
|
1993-06-12 14:58:17 +00:00
|
|
|
{
|
2003-05-01 01:05:25 +00:00
|
|
|
#ifdef NPX_DEBUG
|
|
|
|
u_int masked_exceptions;
|
|
|
|
#endif
|
2002-03-21 06:19:08 +00:00
|
|
|
register_t savecrit;
|
1993-06-12 14:58:17 +00:00
|
|
|
|
2002-03-21 06:19:08 +00:00
|
|
|
savecrit = intr_disable();
|
2002-09-16 19:25:59 +00:00
|
|
|
if (curthread == PCPU_GET(fpcurthread))
|
2001-07-12 06:32:51 +00:00
|
|
|
npxsave(&PCPU_GET(curpcb)->pcb_save);
|
2002-03-21 06:19:08 +00:00
|
|
|
intr_restore(savecrit);
|
1997-01-29 13:46:28 +00:00
|
|
|
#ifdef NPX_DEBUG
|
2003-05-01 01:05:25 +00:00
|
|
|
masked_exceptions = GET_FPU_CW(td) & GET_FPU_SW(td) & 0x7f;
|
|
|
|
/*
|
|
|
|
* Log exceptions that would have trapped with the old
|
|
|
|
* control word (overflow, divide by 0, and invalid operand).
|
|
|
|
*/
|
|
|
|
if (masked_exceptions & 0x0d)
|
|
|
|
log(LOG_ERR,
|
|
|
|
"pid %d (%s) exited with masked floating point exceptions 0x%02x\n",
|
|
|
|
td->td_proc->p_pid, td->td_proc->p_comm,
|
|
|
|
masked_exceptions);
|
1997-01-29 13:46:28 +00:00
|
|
|
#endif
|
1993-06-12 14:58:17 +00:00
|
|
|
}
|
|
|
|
|
2002-09-16 19:25:59 +00:00
|
|
|
int
|
|
|
|
npxformat()
|
|
|
|
{
|
|
|
|
|
2003-05-01 01:05:25 +00:00
|
|
|
return (_MC_FPFMT_XMM);
|
2002-09-16 19:25:59 +00:00
|
|
|
}
|
|
|
|
|
1999-07-25 13:16:09 +00:00
|
|
|
/*
|
|
|
|
* The following mechanism is used to ensure that the FPE_... value
|
|
|
|
* that is passed as a trapcode to the signal handler of the user
|
|
|
|
* process does not have more than one bit set.
|
|
|
|
*
|
|
|
|
* Multiple bits may be set if the user process modifies the control
|
1999-07-26 05:47:31 +00:00
|
|
|
* word while a status word bit is already set. While this is a sign
|
1999-07-25 13:16:09 +00:00
|
|
|
* of bad coding, we have no choise than to narrow them down to one
|
|
|
|
* bit, since we must not send a trapcode that is not exactly one of
|
|
|
|
* the FPE_ macros.
|
|
|
|
*
|
1999-07-26 05:47:31 +00:00
|
|
|
* The mechanism has a static table with 127 entries. Each combination
|
1999-07-25 13:16:09 +00:00
|
|
|
* of the 7 FPU status word exception bits directly translates to a
|
|
|
|
* position in this table, where a single FPE_... value is stored.
|
|
|
|
* This FPE_... value stored there is considered the "most important"
|
1999-07-26 05:47:31 +00:00
|
|
|
* of the exception bits and will be sent as the signal code. The
|
1999-07-25 13:16:09 +00:00
|
|
|
* precedence of the bits is based upon Intel Document "Numerical
|
|
|
|
* Applications", Chapter "Special Computational Situations".
|
|
|
|
*
|
|
|
|
* The macro to choose one of these values does these steps: 1) Throw
|
1999-07-26 05:47:31 +00:00
|
|
|
* away status word bits that cannot be masked. 2) Throw away the bits
|
1999-07-25 13:16:09 +00:00
|
|
|
* currently masked in the control word, assuming the user isn't
|
1999-07-26 05:47:31 +00:00
|
|
|
* interested in them anymore. 3) Reinsert status word bit 7 (stack
|
1999-07-25 13:16:09 +00:00
|
|
|
* fault) if it is set, which cannot be masked but must be presered.
|
|
|
|
* 4) Use the remaining bits to point into the trapcode table.
|
|
|
|
*
|
|
|
|
* The 6 maskable bits in order of their preference, as stated in the
|
|
|
|
* above referenced Intel manual:
|
|
|
|
* 1 Invalid operation (FP_X_INV)
|
|
|
|
* 1a Stack underflow
|
|
|
|
* 1b Stack overflow
|
|
|
|
* 1c Operand of unsupported format
|
|
|
|
* 1d SNaN operand.
|
|
|
|
* 2 QNaN operand (not an exception, irrelavant here)
|
|
|
|
* 3 Any other invalid-operation not mentioned above or zero divide
|
|
|
|
* (FP_X_INV, FP_X_DZ)
|
|
|
|
* 4 Denormal operand (FP_X_DNML)
|
|
|
|
* 5 Numeric over/underflow (FP_X_OFL, FP_X_UFL)
|
1999-07-26 05:47:31 +00:00
|
|
|
* 6 Inexact result (FP_X_IMP)
|
|
|
|
*/
|
1999-07-25 13:16:09 +00:00
|
|
|
static char fpetable[128] = {
|
|
|
|
0,
|
1999-07-26 05:47:31 +00:00
|
|
|
FPE_FLTINV, /* 1 - INV */
|
|
|
|
FPE_FLTUND, /* 2 - DNML */
|
|
|
|
FPE_FLTINV, /* 3 - INV | DNML */
|
|
|
|
FPE_FLTDIV, /* 4 - DZ */
|
|
|
|
FPE_FLTINV, /* 5 - INV | DZ */
|
|
|
|
FPE_FLTDIV, /* 6 - DNML | DZ */
|
|
|
|
FPE_FLTINV, /* 7 - INV | DNML | DZ */
|
|
|
|
FPE_FLTOVF, /* 8 - OFL */
|
|
|
|
FPE_FLTINV, /* 9 - INV | OFL */
|
|
|
|
FPE_FLTUND, /* A - DNML | OFL */
|
|
|
|
FPE_FLTINV, /* B - INV | DNML | OFL */
|
|
|
|
FPE_FLTDIV, /* C - DZ | OFL */
|
|
|
|
FPE_FLTINV, /* D - INV | DZ | OFL */
|
|
|
|
FPE_FLTDIV, /* E - DNML | DZ | OFL */
|
|
|
|
FPE_FLTINV, /* F - INV | DNML | DZ | OFL */
|
|
|
|
FPE_FLTUND, /* 10 - UFL */
|
|
|
|
FPE_FLTINV, /* 11 - INV | UFL */
|
|
|
|
FPE_FLTUND, /* 12 - DNML | UFL */
|
|
|
|
FPE_FLTINV, /* 13 - INV | DNML | UFL */
|
|
|
|
FPE_FLTDIV, /* 14 - DZ | UFL */
|
|
|
|
FPE_FLTINV, /* 15 - INV | DZ | UFL */
|
|
|
|
FPE_FLTDIV, /* 16 - DNML | DZ | UFL */
|
|
|
|
FPE_FLTINV, /* 17 - INV | DNML | DZ | UFL */
|
|
|
|
FPE_FLTOVF, /* 18 - OFL | UFL */
|
|
|
|
FPE_FLTINV, /* 19 - INV | OFL | UFL */
|
|
|
|
FPE_FLTUND, /* 1A - DNML | OFL | UFL */
|
|
|
|
FPE_FLTINV, /* 1B - INV | DNML | OFL | UFL */
|
|
|
|
FPE_FLTDIV, /* 1C - DZ | OFL | UFL */
|
|
|
|
FPE_FLTINV, /* 1D - INV | DZ | OFL | UFL */
|
|
|
|
FPE_FLTDIV, /* 1E - DNML | DZ | OFL | UFL */
|
|
|
|
FPE_FLTINV, /* 1F - INV | DNML | DZ | OFL | UFL */
|
|
|
|
FPE_FLTRES, /* 20 - IMP */
|
|
|
|
FPE_FLTINV, /* 21 - INV | IMP */
|
|
|
|
FPE_FLTUND, /* 22 - DNML | IMP */
|
|
|
|
FPE_FLTINV, /* 23 - INV | DNML | IMP */
|
|
|
|
FPE_FLTDIV, /* 24 - DZ | IMP */
|
|
|
|
FPE_FLTINV, /* 25 - INV | DZ | IMP */
|
|
|
|
FPE_FLTDIV, /* 26 - DNML | DZ | IMP */
|
|
|
|
FPE_FLTINV, /* 27 - INV | DNML | DZ | IMP */
|
|
|
|
FPE_FLTOVF, /* 28 - OFL | IMP */
|
|
|
|
FPE_FLTINV, /* 29 - INV | OFL | IMP */
|
|
|
|
FPE_FLTUND, /* 2A - DNML | OFL | IMP */
|
|
|
|
FPE_FLTINV, /* 2B - INV | DNML | OFL | IMP */
|
|
|
|
FPE_FLTDIV, /* 2C - DZ | OFL | IMP */
|
|
|
|
FPE_FLTINV, /* 2D - INV | DZ | OFL | IMP */
|
|
|
|
FPE_FLTDIV, /* 2E - DNML | DZ | OFL | IMP */
|
|
|
|
FPE_FLTINV, /* 2F - INV | DNML | DZ | OFL | IMP */
|
|
|
|
FPE_FLTUND, /* 30 - UFL | IMP */
|
|
|
|
FPE_FLTINV, /* 31 - INV | UFL | IMP */
|
|
|
|
FPE_FLTUND, /* 32 - DNML | UFL | IMP */
|
|
|
|
FPE_FLTINV, /* 33 - INV | DNML | UFL | IMP */
|
|
|
|
FPE_FLTDIV, /* 34 - DZ | UFL | IMP */
|
|
|
|
FPE_FLTINV, /* 35 - INV | DZ | UFL | IMP */
|
|
|
|
FPE_FLTDIV, /* 36 - DNML | DZ | UFL | IMP */
|
|
|
|
FPE_FLTINV, /* 37 - INV | DNML | DZ | UFL | IMP */
|
|
|
|
FPE_FLTOVF, /* 38 - OFL | UFL | IMP */
|
|
|
|
FPE_FLTINV, /* 39 - INV | OFL | UFL | IMP */
|
|
|
|
FPE_FLTUND, /* 3A - DNML | OFL | UFL | IMP */
|
|
|
|
FPE_FLTINV, /* 3B - INV | DNML | OFL | UFL | IMP */
|
|
|
|
FPE_FLTDIV, /* 3C - DZ | OFL | UFL | IMP */
|
|
|
|
FPE_FLTINV, /* 3D - INV | DZ | OFL | UFL | IMP */
|
|
|
|
FPE_FLTDIV, /* 3E - DNML | DZ | OFL | UFL | IMP */
|
|
|
|
FPE_FLTINV, /* 3F - INV | DNML | DZ | OFL | UFL | IMP */
|
|
|
|
FPE_FLTSUB, /* 40 - STK */
|
|
|
|
FPE_FLTSUB, /* 41 - INV | STK */
|
|
|
|
FPE_FLTUND, /* 42 - DNML | STK */
|
|
|
|
FPE_FLTSUB, /* 43 - INV | DNML | STK */
|
|
|
|
FPE_FLTDIV, /* 44 - DZ | STK */
|
|
|
|
FPE_FLTSUB, /* 45 - INV | DZ | STK */
|
|
|
|
FPE_FLTDIV, /* 46 - DNML | DZ | STK */
|
|
|
|
FPE_FLTSUB, /* 47 - INV | DNML | DZ | STK */
|
|
|
|
FPE_FLTOVF, /* 48 - OFL | STK */
|
|
|
|
FPE_FLTSUB, /* 49 - INV | OFL | STK */
|
|
|
|
FPE_FLTUND, /* 4A - DNML | OFL | STK */
|
|
|
|
FPE_FLTSUB, /* 4B - INV | DNML | OFL | STK */
|
|
|
|
FPE_FLTDIV, /* 4C - DZ | OFL | STK */
|
|
|
|
FPE_FLTSUB, /* 4D - INV | DZ | OFL | STK */
|
|
|
|
FPE_FLTDIV, /* 4E - DNML | DZ | OFL | STK */
|
|
|
|
FPE_FLTSUB, /* 4F - INV | DNML | DZ | OFL | STK */
|
|
|
|
FPE_FLTUND, /* 50 - UFL | STK */
|
|
|
|
FPE_FLTSUB, /* 51 - INV | UFL | STK */
|
|
|
|
FPE_FLTUND, /* 52 - DNML | UFL | STK */
|
|
|
|
FPE_FLTSUB, /* 53 - INV | DNML | UFL | STK */
|
|
|
|
FPE_FLTDIV, /* 54 - DZ | UFL | STK */
|
|
|
|
FPE_FLTSUB, /* 55 - INV | DZ | UFL | STK */
|
|
|
|
FPE_FLTDIV, /* 56 - DNML | DZ | UFL | STK */
|
|
|
|
FPE_FLTSUB, /* 57 - INV | DNML | DZ | UFL | STK */
|
|
|
|
FPE_FLTOVF, /* 58 - OFL | UFL | STK */
|
|
|
|
FPE_FLTSUB, /* 59 - INV | OFL | UFL | STK */
|
|
|
|
FPE_FLTUND, /* 5A - DNML | OFL | UFL | STK */
|
|
|
|
FPE_FLTSUB, /* 5B - INV | DNML | OFL | UFL | STK */
|
|
|
|
FPE_FLTDIV, /* 5C - DZ | OFL | UFL | STK */
|
|
|
|
FPE_FLTSUB, /* 5D - INV | DZ | OFL | UFL | STK */
|
|
|
|
FPE_FLTDIV, /* 5E - DNML | DZ | OFL | UFL | STK */
|
|
|
|
FPE_FLTSUB, /* 5F - INV | DNML | DZ | OFL | UFL | STK */
|
|
|
|
FPE_FLTRES, /* 60 - IMP | STK */
|
|
|
|
FPE_FLTSUB, /* 61 - INV | IMP | STK */
|
|
|
|
FPE_FLTUND, /* 62 - DNML | IMP | STK */
|
|
|
|
FPE_FLTSUB, /* 63 - INV | DNML | IMP | STK */
|
|
|
|
FPE_FLTDIV, /* 64 - DZ | IMP | STK */
|
|
|
|
FPE_FLTSUB, /* 65 - INV | DZ | IMP | STK */
|
|
|
|
FPE_FLTDIV, /* 66 - DNML | DZ | IMP | STK */
|
|
|
|
FPE_FLTSUB, /* 67 - INV | DNML | DZ | IMP | STK */
|
|
|
|
FPE_FLTOVF, /* 68 - OFL | IMP | STK */
|
|
|
|
FPE_FLTSUB, /* 69 - INV | OFL | IMP | STK */
|
|
|
|
FPE_FLTUND, /* 6A - DNML | OFL | IMP | STK */
|
|
|
|
FPE_FLTSUB, /* 6B - INV | DNML | OFL | IMP | STK */
|
|
|
|
FPE_FLTDIV, /* 6C - DZ | OFL | IMP | STK */
|
|
|
|
FPE_FLTSUB, /* 6D - INV | DZ | OFL | IMP | STK */
|
|
|
|
FPE_FLTDIV, /* 6E - DNML | DZ | OFL | IMP | STK */
|
|
|
|
FPE_FLTSUB, /* 6F - INV | DNML | DZ | OFL | IMP | STK */
|
|
|
|
FPE_FLTUND, /* 70 - UFL | IMP | STK */
|
|
|
|
FPE_FLTSUB, /* 71 - INV | UFL | IMP | STK */
|
|
|
|
FPE_FLTUND, /* 72 - DNML | UFL | IMP | STK */
|
|
|
|
FPE_FLTSUB, /* 73 - INV | DNML | UFL | IMP | STK */
|
|
|
|
FPE_FLTDIV, /* 74 - DZ | UFL | IMP | STK */
|
|
|
|
FPE_FLTSUB, /* 75 - INV | DZ | UFL | IMP | STK */
|
|
|
|
FPE_FLTDIV, /* 76 - DNML | DZ | UFL | IMP | STK */
|
|
|
|
FPE_FLTSUB, /* 77 - INV | DNML | DZ | UFL | IMP | STK */
|
|
|
|
FPE_FLTOVF, /* 78 - OFL | UFL | IMP | STK */
|
|
|
|
FPE_FLTSUB, /* 79 - INV | OFL | UFL | IMP | STK */
|
|
|
|
FPE_FLTUND, /* 7A - DNML | OFL | UFL | IMP | STK */
|
|
|
|
FPE_FLTSUB, /* 7B - INV | DNML | OFL | UFL | IMP | STK */
|
|
|
|
FPE_FLTDIV, /* 7C - DZ | OFL | UFL | IMP | STK */
|
|
|
|
FPE_FLTSUB, /* 7D - INV | DZ | OFL | UFL | IMP | STK */
|
|
|
|
FPE_FLTDIV, /* 7E - DNML | DZ | OFL | UFL | IMP | STK */
|
|
|
|
FPE_FLTSUB, /* 7F - INV | DNML | DZ | OFL | UFL | IMP | STK */
|
1999-07-25 13:16:09 +00:00
|
|
|
};
|
|
|
|
|
1993-06-12 14:58:17 +00:00
|
|
|
/*
|
1995-01-03 04:00:06 +00:00
|
|
|
* Preserve the FP status word, clear FP exceptions, then generate a SIGFPE.
|
|
|
|
*
|
|
|
|
* Clearing exceptions is necessary mainly to avoid IRQ13 bugs. We now
|
|
|
|
* depend on longjmp() restoring a usable state. Restoring the state
|
|
|
|
* or examining it might fail if we didn't clear exceptions.
|
|
|
|
*
|
1999-07-25 13:16:09 +00:00
|
|
|
* The error code chosen will be one of the FPE_... macros. It will be
|
|
|
|
* sent as the second argument to old BSD-style signal handlers and as
|
|
|
|
* "siginfo_t->si_code" (second argument) to SA_SIGINFO signal handlers.
|
1995-01-03 04:00:06 +00:00
|
|
|
*
|
|
|
|
* XXX the FP state is not preserved across signal handlers. So signal
|
|
|
|
* handlers cannot afford to do FP unless they preserve the state or
|
|
|
|
* longjmp() out. Both preserving the state and longjmp()ing may be
|
|
|
|
* destroyed by IRQ13 bugs. Clearing FP exceptions is not an acceptable
|
|
|
|
* solution for signals other than SIGFPE.
|
1993-06-12 14:58:17 +00:00
|
|
|
*/
|
2001-05-22 21:20:49 +00:00
|
|
|
int
|
|
|
|
npxtrap()
|
1993-06-12 14:58:17 +00:00
|
|
|
{
|
2002-03-21 06:19:08 +00:00
|
|
|
register_t savecrit;
|
2001-05-22 21:20:49 +00:00
|
|
|
u_short control, status;
|
1993-06-12 14:58:17 +00:00
|
|
|
|
2002-03-21 06:19:08 +00:00
|
|
|
savecrit = intr_disable();
|
1993-06-12 14:58:17 +00:00
|
|
|
|
|
|
|
/*
|
2001-05-22 21:20:49 +00:00
|
|
|
* Interrupt handling (for another interrupt) may have pushed the
|
|
|
|
* state to memory. Fetch the relevant parts of the state from
|
|
|
|
* wherever they are.
|
1993-06-12 14:58:17 +00:00
|
|
|
*/
|
2001-12-11 23:33:44 +00:00
|
|
|
if (PCPU_GET(fpcurthread) != curthread) {
|
2001-09-12 08:38:13 +00:00
|
|
|
control = GET_FPU_CW(curthread);
|
|
|
|
status = GET_FPU_SW(curthread);
|
1993-06-12 14:58:17 +00:00
|
|
|
} else {
|
2001-05-22 21:20:49 +00:00
|
|
|
fnstcw(&control);
|
|
|
|
fnstsw(&status);
|
1993-06-12 14:58:17 +00:00
|
|
|
}
|
2001-05-22 21:20:49 +00:00
|
|
|
|
2002-09-16 19:25:59 +00:00
|
|
|
if (PCPU_GET(fpcurthread) == curthread)
|
2001-05-22 21:20:49 +00:00
|
|
|
fnclex();
|
2002-03-21 06:19:08 +00:00
|
|
|
intr_restore(savecrit);
|
2001-05-22 21:20:49 +00:00
|
|
|
return (fpetable[status & ((~control & 0x3f) | 0x40)]);
|
1993-06-12 14:58:17 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Implement device not available (DNA) exception
|
|
|
|
*
|
2001-12-11 23:33:44 +00:00
|
|
|
* It would be better to switch FP context here (if curthread != fpcurthread)
|
1995-01-03 04:00:06 +00:00
|
|
|
* and not necessarily for every context switch, but it is too hard to
|
|
|
|
* access foreign pcb's.
|
1993-06-12 14:58:17 +00:00
|
|
|
*/
|
2002-09-16 19:25:59 +00:00
|
|
|
|
|
|
|
static int err_count = 0;
|
|
|
|
|
1993-06-12 14:58:17 +00:00
|
|
|
int
|
|
|
|
npxdna()
|
|
|
|
{
|
2002-09-16 19:25:59 +00:00
|
|
|
struct pcb *pcb;
|
2002-03-21 06:19:08 +00:00
|
|
|
register_t s;
|
2002-09-16 19:25:59 +00:00
|
|
|
u_short control;
|
2001-02-01 03:34:20 +00:00
|
|
|
|
2002-09-16 19:25:59 +00:00
|
|
|
if (PCPU_GET(fpcurthread) == curthread) {
|
|
|
|
printf("npxdna: fpcurthread == curthread %d times\n",
|
|
|
|
++err_count);
|
|
|
|
stop_emulating();
|
|
|
|
return (1);
|
|
|
|
}
|
2001-12-11 23:33:44 +00:00
|
|
|
if (PCPU_GET(fpcurthread) != NULL) {
|
2002-09-16 19:25:59 +00:00
|
|
|
printf("npxdna: fpcurthread = %p (%d), curthread = %p (%d)\n",
|
|
|
|
PCPU_GET(fpcurthread),
|
|
|
|
PCPU_GET(fpcurthread)->td_proc->p_pid,
|
|
|
|
curthread, curthread->td_proc->p_pid);
|
1993-06-12 14:58:17 +00:00
|
|
|
panic("npxdna");
|
|
|
|
}
|
2002-03-21 06:19:08 +00:00
|
|
|
s = intr_disable();
|
1993-06-12 14:58:17 +00:00
|
|
|
stop_emulating();
|
|
|
|
/*
|
|
|
|
* Record new context early in case frstor causes an IRQ13.
|
|
|
|
*/
|
2001-12-11 23:33:44 +00:00
|
|
|
PCPU_SET(fpcurthread, curthread);
|
2002-09-16 19:25:59 +00:00
|
|
|
pcb = PCPU_GET(curpcb);
|
2001-07-12 06:32:51 +00:00
|
|
|
|
2002-09-16 19:25:59 +00:00
|
|
|
if ((pcb->pcb_flags & PCB_NPXINITDONE) == 0) {
|
|
|
|
/*
|
|
|
|
* This is the first time this thread has used the FPU or
|
|
|
|
* the PCB doesn't contain a clean FPU state. Explicitly
|
|
|
|
* initialize the FPU and load the default control word.
|
|
|
|
*/
|
|
|
|
fninit();
|
|
|
|
control = __INITIAL_NPXCW__;
|
|
|
|
fldcw(&control);
|
|
|
|
pcb->pcb_flags |= PCB_NPXINITDONE;
|
|
|
|
} else {
|
|
|
|
/*
|
2003-05-01 01:05:25 +00:00
|
|
|
* The following frstor may cause a trap when the state
|
2002-09-16 19:25:59 +00:00
|
|
|
* being restored has a pending error. The error will
|
|
|
|
* appear to have been triggered by the current (npx) user
|
|
|
|
* instruction even when that instruction is a no-wait
|
|
|
|
* instruction that should not trigger an error (e.g.,
|
|
|
|
* instructions are broken the same as frstor, so our
|
2003-05-01 01:05:25 +00:00
|
|
|
* treatment does not amplify the breakage.
|
2002-09-16 19:25:59 +00:00
|
|
|
*/
|
2003-05-01 01:05:25 +00:00
|
|
|
fxrstor(&pcb->pcb_save);
|
2002-09-16 19:25:59 +00:00
|
|
|
}
|
2002-03-21 06:19:08 +00:00
|
|
|
intr_restore(s);
|
1993-06-12 14:58:17 +00:00
|
|
|
|
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2001-05-20 20:04:40 +00:00
|
|
|
* Wrapper for fnsave instruction, partly to handle hardware bugs. When npx
|
|
|
|
* exceptions are reported via IRQ13, spurious IRQ13's may be triggered by
|
|
|
|
* no-wait npx instructions. See the Intel application note AP-578 for
|
|
|
|
* details. This doesn't cause any additional complications here. IRQ13's
|
|
|
|
* are inherently asynchronous unless the CPU is frozen to deliver them --
|
|
|
|
* one that started in userland may be delivered many instructions later,
|
|
|
|
* after the process has entered the kernel. It may even be delivered after
|
|
|
|
* the fnsave here completes. A spurious IRQ13 for the fnsave is handled in
|
|
|
|
* the same way as a very-late-arriving non-spurious IRQ13 from user mode:
|
2001-12-11 23:33:44 +00:00
|
|
|
* it is normally ignored at first because we set fpcurthread to NULL; it is
|
2001-05-20 20:04:40 +00:00
|
|
|
* normally retriggered in npxdna() after return to user mode.
|
|
|
|
*
|
|
|
|
* npxsave() must be called with interrupts disabled, so that it clears
|
2001-12-11 23:33:44 +00:00
|
|
|
* fpcurthread atomically with saving the state. We require callers to do the
|
2001-05-20 20:04:40 +00:00
|
|
|
* disabling, since most callers need to disable interrupts anyway to call
|
2001-12-11 23:33:44 +00:00
|
|
|
* npxsave() atomically with checking fpcurthread.
|
2001-05-20 20:04:40 +00:00
|
|
|
*
|
|
|
|
* A previous version of npxsave() went to great lengths to excecute fnsave
|
|
|
|
* with interrupts enabled in case executing it froze the CPU. This case
|
|
|
|
* can't happen, at least for Intel CPU/NPX's. Spurious IRQ13's don't imply
|
|
|
|
* spurious freezes.
|
1993-06-12 14:58:17 +00:00
|
|
|
*/
|
|
|
|
void
|
|
|
|
npxsave(addr)
|
2003-05-01 01:05:25 +00:00
|
|
|
struct savefpu *addr;
|
1993-06-12 14:58:17 +00:00
|
|
|
{
|
1997-07-21 07:57:50 +00:00
|
|
|
|
|
|
|
stop_emulating();
|
2003-05-01 01:05:25 +00:00
|
|
|
fxsave(addr);
|
2001-07-12 06:32:51 +00:00
|
|
|
|
1997-07-21 07:57:50 +00:00
|
|
|
start_emulating();
|
2001-12-11 23:33:44 +00:00
|
|
|
PCPU_SET(fpcurthread, NULL);
|
1993-06-12 14:58:17 +00:00
|
|
|
}
|
|
|
|
|
2002-09-16 19:25:59 +00:00
|
|
|
/*
|
|
|
|
* This should be called with interrupts disabled and only when the owning
|
|
|
|
* FPU thread is non-null.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
npxdrop()
|
|
|
|
{
|
|
|
|
struct thread *td;
|
|
|
|
|
|
|
|
td = PCPU_GET(fpcurthread);
|
|
|
|
PCPU_SET(fpcurthread, NULL);
|
|
|
|
td->td_pcb->pcb_flags &= ~PCB_NPXINITDONE;
|
|
|
|
start_emulating();
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Get the state of the FPU without dropping ownership (if possible).
|
|
|
|
* It returns the FPU ownership status.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
npxgetregs(td, addr)
|
|
|
|
struct thread *td;
|
2003-05-01 01:05:25 +00:00
|
|
|
struct savefpu *addr;
|
2002-09-16 19:25:59 +00:00
|
|
|
{
|
|
|
|
register_t s;
|
|
|
|
|
|
|
|
if ((td->td_pcb->pcb_flags & PCB_NPXINITDONE) == 0) {
|
|
|
|
if (npx_cleanstate_ready)
|
|
|
|
bcopy(&npx_cleanstate, addr, sizeof(npx_cleanstate));
|
|
|
|
else
|
|
|
|
bzero(addr, sizeof(*addr));
|
|
|
|
return (_MC_FPOWNED_NONE);
|
|
|
|
}
|
|
|
|
s = intr_disable();
|
2003-04-01 00:16:32 +00:00
|
|
|
if (td == PCPU_GET(fpcurthread)) {
|
2003-05-01 01:05:25 +00:00
|
|
|
fxsave(addr);
|
2002-09-16 19:25:59 +00:00
|
|
|
intr_restore(s);
|
|
|
|
return (_MC_FPOWNED_FPU);
|
|
|
|
} else {
|
|
|
|
intr_restore(s);
|
|
|
|
bcopy(&td->td_pcb->pcb_save, addr, sizeof(*addr));
|
|
|
|
return (_MC_FPOWNED_PCB);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set the state of the FPU.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
npxsetregs(td, addr)
|
|
|
|
struct thread *td;
|
2003-05-01 01:05:25 +00:00
|
|
|
struct savefpu *addr;
|
2002-09-16 19:25:59 +00:00
|
|
|
{
|
|
|
|
register_t s;
|
|
|
|
|
|
|
|
s = intr_disable();
|
2003-03-31 00:32:43 +00:00
|
|
|
if (td == PCPU_GET(fpcurthread)) {
|
2003-05-01 01:05:25 +00:00
|
|
|
fxrstor(addr);
|
2002-09-16 19:25:59 +00:00
|
|
|
intr_restore(s);
|
|
|
|
} else {
|
|
|
|
intr_restore(s);
|
|
|
|
bcopy(addr, &td->td_pcb->pcb_save, sizeof(*addr));
|
|
|
|
}
|
2002-10-25 19:12:16 +00:00
|
|
|
curthread->td_pcb->pcb_flags |= PCB_NPXINITDONE;
|
2002-09-16 19:25:59 +00:00
|
|
|
}
|
|
|
|
|
1999-04-16 21:22:55 +00:00
|
|
|
static device_method_t npx_methods[] = {
|
|
|
|
/* Device interface */
|
1999-08-22 19:52:51 +00:00
|
|
|
DEVMETHOD(device_identify, npx_identify),
|
1999-04-16 21:22:55 +00:00
|
|
|
DEVMETHOD(device_probe, npx_probe),
|
|
|
|
DEVMETHOD(device_attach, npx_attach),
|
|
|
|
DEVMETHOD(device_detach, bus_generic_detach),
|
|
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
|
|
DEVMETHOD(device_suspend, bus_generic_suspend),
|
|
|
|
DEVMETHOD(device_resume, bus_generic_resume),
|
|
|
|
|
|
|
|
{ 0, 0 }
|
|
|
|
};
|
|
|
|
|
|
|
|
static driver_t npx_driver = {
|
|
|
|
"npx",
|
|
|
|
npx_methods,
|
|
|
|
1, /* no softc */
|
|
|
|
};
|
|
|
|
|
|
|
|
static devclass_t npx_devclass;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We prefer to attach to the root nexus so that the usual case (exception 16)
|
|
|
|
* doesn't describe the processor as being `on isa'.
|
|
|
|
*/
|
|
|
|
DRIVER_MODULE(npx, nexus, npx_driver, npx_devclass, 0, 0);
|
2000-05-04 23:57:32 +00:00
|
|
|
|
2003-05-01 01:05:25 +00:00
|
|
|
#ifdef DEV_ISA
|
2000-05-04 23:57:32 +00:00
|
|
|
/*
|
2001-08-30 09:17:03 +00:00
|
|
|
* This sucks up the legacy ISA support assignments from PNPBIOS/ACPI.
|
2000-05-04 23:57:32 +00:00
|
|
|
*/
|
|
|
|
static struct isa_pnp_id npxisa_ids[] = {
|
|
|
|
{ 0x040cd041, "Legacy ISA coprocessor support" }, /* PNP0C04 */
|
|
|
|
{ 0 }
|
|
|
|
};
|
|
|
|
|
|
|
|
static int
|
|
|
|
npxisa_probe(device_t dev)
|
|
|
|
{
|
2000-06-23 08:19:50 +00:00
|
|
|
int result;
|
|
|
|
if ((result = ISA_PNP_PROBE(device_get_parent(dev), dev, npxisa_ids)) <= 0) {
|
|
|
|
device_quiet(dev);
|
|
|
|
}
|
|
|
|
return(result);
|
2000-05-04 23:57:32 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
npxisa_attach(device_t dev)
|
|
|
|
{
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static device_method_t npxisa_methods[] = {
|
|
|
|
/* Device interface */
|
|
|
|
DEVMETHOD(device_probe, npxisa_probe),
|
|
|
|
DEVMETHOD(device_attach, npxisa_attach),
|
|
|
|
DEVMETHOD(device_detach, bus_generic_detach),
|
|
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
|
|
DEVMETHOD(device_suspend, bus_generic_suspend),
|
|
|
|
DEVMETHOD(device_resume, bus_generic_resume),
|
|
|
|
|
|
|
|
{ 0, 0 }
|
|
|
|
};
|
|
|
|
|
|
|
|
static driver_t npxisa_driver = {
|
|
|
|
"npxisa",
|
|
|
|
npxisa_methods,
|
|
|
|
1, /* no softc */
|
|
|
|
};
|
|
|
|
|
|
|
|
static devclass_t npxisa_devclass;
|
|
|
|
|
|
|
|
DRIVER_MODULE(npxisa, isa, npxisa_driver, npxisa_devclass, 0, 0);
|
2001-08-30 09:17:03 +00:00
|
|
|
DRIVER_MODULE(npxisa, acpi, npxisa_driver, npxisa_devclass, 0, 0);
|
2002-01-30 12:41:12 +00:00
|
|
|
#endif /* DEV_ISA */
|