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Diff for /src/sys/compat/ndis/Attic/subr_hal.c between version 1.3.6.1 and 1.3.6.2

version 1.3.6.1, 2006/03/31 00:03:57 version 1.3.6.2, 2006/04/19 04:01:22
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   /*-
    * Copyright (c) 2003
    *      Bill Paul <wpaul@windriver.com>.  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 Bill Paul.
    * 4. Neither the name of the author nor the names of any co-contributors
    *    may be used to endorse or promote products derived from this software
    *    without specific prior written permission.
    *
    * THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
    * 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.
    */
   
   #include <sys/cdefs.h>
   #ifdef __FreeBSD__
   __FBSDID("$FreeBSD: src/sys/compat/ndis/subr_hal.c,v 1.13.2.3 2005/03/31 04:24:35 wpaul Exp $");
   #endif
   #ifdef __NetBSD__
   __KERNEL_RCSID(0, "$NetBSD$");
   #endif
   
   #include <sys/param.h>
   #include <sys/types.h>
   #include <sys/errno.h>
   
   #include <sys/callout.h>
   #include <sys/kernel.h>
   #include <sys/lock.h>
   #ifdef __FreeBSD__
   #include <sys/mutex.h>
   #endif
   #include <sys/proc.h>
   #include <sys/sched.h>
   #ifdef __FreeBSD__
   #include <sys/module.h>
   #endif
   
   #include <sys/systm.h>
   #ifdef __NetBSD__
   #include <sys/lkm.h>
   #endif
   #ifdef __FreeBSD__
   #include <machine/clock.h>
   #include <machine/bus_memio.h>
   #include <machine/bus_pio.h>
   #endif
   #include <machine/bus.h>
   
   #ifdef __FreeBSD__
   #include <sys/bus.h>
   #include <sys/rman.h>
   #endif
   
   #include <compat/ndis/pe_var.h>
   #include <compat/ndis/ntoskrnl_var.h>
   #include <compat/ndis/hal_var.h>
   
   __stdcall static void KeStallExecutionProcessor(uint32_t);
   __stdcall static void WRITE_PORT_BUFFER_ULONG(uint32_t *,
           uint32_t *, uint32_t);
   __stdcall static void WRITE_PORT_BUFFER_USHORT(uint16_t *,
           uint16_t *, uint32_t);
   __stdcall static void WRITE_PORT_BUFFER_UCHAR(uint8_t *,
           uint8_t *, uint32_t);
   __stdcall static void WRITE_PORT_ULONG(uint32_t *, uint32_t);
   __stdcall static void WRITE_PORT_USHORT(uint16_t *, uint16_t);
   __stdcall static void WRITE_PORT_UCHAR(uint8_t *, uint8_t);
   __stdcall static uint32_t READ_PORT_ULONG(uint32_t *);
   __stdcall static uint16_t READ_PORT_USHORT(uint16_t *);
   __stdcall static uint8_t READ_PORT_UCHAR(uint8_t *);
   __stdcall static void READ_PORT_BUFFER_ULONG(uint32_t *,
           uint32_t *, uint32_t);
   __stdcall static void READ_PORT_BUFFER_USHORT(uint16_t *,
           uint16_t *, uint32_t);
   __stdcall static void READ_PORT_BUFFER_UCHAR(uint8_t *,
           uint8_t *, uint32_t);
   __stdcall static uint64_t KeQueryPerformanceCounter(uint64_t *);
   __stdcall static void dummy (void);
   
   extern struct mtx_pool *ndis_mtxpool;
   
   int
   hal_libinit()
   {
           image_patch_table       *patch;
   
           patch = hal_functbl;
           while (patch->ipt_func != NULL) {
                   windrv_wrap((funcptr)patch->ipt_func,
                       (funcptr *)&patch->ipt_wrap);
                   patch++;
           }
   
           return(0);
   }
   
   int
   hal_libfini()
   {
           image_patch_table       *patch;
   
           patch = hal_functbl;
           while (patch->ipt_func != NULL) {
                   windrv_unwrap(patch->ipt_wrap);
                   patch++;
           }
   
           return(0);
   }
   
   __stdcall static void
   KeStallExecutionProcessor(usecs)
           uint32_t                usecs;
   {
           DELAY(usecs);
           return;
   }
   
   __stdcall static void
   WRITE_PORT_ULONG(port, val)
           uint32_t                *port;
           uint32_t                val;
   {
           bus_space_write_4(NDIS_BUS_SPACE_IO, 0x0, (bus_size_t)port, val);
           return;
   }
   
   __stdcall static void
   WRITE_PORT_USHORT(port, val)
           uint16_t                *port;
           uint16_t                val;
   {
           bus_space_write_2(NDIS_BUS_SPACE_IO, 0x0, (bus_size_t)port, val);
           return;
   }
   
   __stdcall static void
   WRITE_PORT_UCHAR(port, val)
           uint8_t                 *port;
           uint8_t                 val;
   {
           bus_space_write_1(NDIS_BUS_SPACE_IO, 0x0, (bus_size_t)port, val);
           return;
   }
   
   __stdcall static void
   WRITE_PORT_BUFFER_ULONG(port, val, cnt)
           uint32_t                *port;
           uint32_t                *val;
           uint32_t                cnt;
   {
           bus_space_write_multi_4(NDIS_BUS_SPACE_IO, 0x0,
               (bus_size_t)port, val, cnt);
           return;
   }
   
   __stdcall static void
   WRITE_PORT_BUFFER_USHORT(port, val, cnt)
           uint16_t                *port;
           uint16_t                *val;
           uint32_t                cnt;
   {
           bus_space_write_multi_2(NDIS_BUS_SPACE_IO, 0x0,
               (bus_size_t)port, val, cnt);
           return;
   }
   
   __stdcall static void
   WRITE_PORT_BUFFER_UCHAR(port, val, cnt)
           uint8_t                 *port;
           uint8_t                 *val;
           uint32_t                cnt;
   {
           bus_space_write_multi_1(NDIS_BUS_SPACE_IO, 0x0,
               (bus_size_t)port, val, cnt);
           return;
   }
   
   __stdcall static uint16_t
   READ_PORT_USHORT(port)
           uint16_t                *port;
   {
           return(bus_space_read_2(NDIS_BUS_SPACE_IO, 0x0, (bus_size_t)port));
   }
   
   __stdcall static uint32_t
   READ_PORT_ULONG(port)
           uint32_t                *port;
   {
           return(bus_space_read_4(NDIS_BUS_SPACE_IO, 0x0, (bus_size_t)port));
   }
   
   __stdcall static uint8_t
   READ_PORT_UCHAR(port)
           uint8_t                 *port;
   {
           return(bus_space_read_1(NDIS_BUS_SPACE_IO, 0x0, (bus_size_t)port));
   }
   
   __stdcall static void
   READ_PORT_BUFFER_ULONG(port, val, cnt)
           uint32_t                *port;
           uint32_t                *val;
           uint32_t                cnt;
   {
           bus_space_read_multi_4(NDIS_BUS_SPACE_IO, 0x0,
               (bus_size_t)port, val, cnt);
           return;
   }
   
   __stdcall static void
   READ_PORT_BUFFER_USHORT(port, val, cnt)
           uint16_t                *port;
           uint16_t                *val;
           uint32_t                cnt;
   {
           bus_space_read_multi_2(NDIS_BUS_SPACE_IO, 0x0,
               (bus_size_t)port, val, cnt);
           return;
   }
   
   __stdcall static void
   READ_PORT_BUFFER_UCHAR(port, val, cnt)
           uint8_t                 *port;
           uint8_t                 *val;
           uint32_t                cnt;
   {
           bus_space_read_multi_1(NDIS_BUS_SPACE_IO, 0x0,
               (bus_size_t)port, val, cnt);
           return;
   }
   
   /*
    * The spinlock implementation in Windows differs from that of FreeBSD.
    * The basic operation of spinlocks involves two steps: 1) spin in a
    * tight loop while trying to acquire a lock, 2) after obtaining the
    * lock, disable preemption. (Note that on uniprocessor systems, you're
    * allowed to skip the first step and just lock out pre-emption, since
    * it's not possible for you to be in contention with another running
    * thread.) Later, you release the lock then re-enable preemption.
    * The difference between Windows and FreeBSD lies in how preemption
    * is disabled. In FreeBSD, it's done using critical_enter(), which on
    * the x86 arch translates to a cli instruction. This masks off all
    * interrupts, and effectively stops the scheduler from ever running
    * so _nothing_ can execute except the current thread. In Windows,
    * preemption is disabled by raising the processor IRQL to DISPATCH_LEVEL.
    * This stops other threads from running, but does _not_ block device
    * interrupts. This means ISRs can still run, and they can make other
    * threads runable, but those other threads won't be able to execute
    * until the current thread lowers the IRQL to something less than
    * DISPATCH_LEVEL.
    *
    * There's another commonly used IRQL in Windows, which is APC_LEVEL.
    * An APC is an Asynchronous Procedure Call, which differs from a DPC
    * (Defered Procedure Call) in that a DPC is queued up to run in
    * another thread, while an APC runs in the thread that scheduled
    * it (similar to a signal handler in a UNIX process). We don't
    * actually support the notion of APCs in FreeBSD, so for now, the
    * only IRQLs we're interested in are DISPATCH_LEVEL and PASSIVE_LEVEL.
    *
    * To simulate DISPATCH_LEVEL, we raise the current thread's priority
    * to PI_REALTIME, which is the highest we can give it. This should,
    * if I understand things correctly, prevent anything except for an
    * interrupt thread from preempting us. PASSIVE_LEVEL is basically
    * everything else.
    *
    * Be aware that, at least on the x86 arch, the Windows spinlock
    * functions are divided up in peculiar ways. The actual spinlock
    * functions are KfAcquireSpinLock() and KfReleaseSpinLock(), and
    * they live in HAL.dll. Meanwhile, KeInitializeSpinLock(),
    * KefAcquireSpinLockAtDpcLevel() and KefReleaseSpinLockFromDpcLevel()
    * live in ntoskrnl.exe. Most Windows source code will call
    * KeAcquireSpinLock() and KeReleaseSpinLock(), but these are just
    * macros that call KfAcquireSpinLock() and KfReleaseSpinLock().
    * KefAcquireSpinLockAtDpcLevel() and KefReleaseSpinLockFromDpcLevel()
    * perform the lock aquisition/release functions without doing the
    * IRQL manipulation, and are used when one is already running at
    * DISPATCH_LEVEL. Make sense? Good.
    *
    * According to the Microsoft documentation, any thread that calls
    * KeAcquireSpinLock() must be running at IRQL <= DISPATCH_LEVEL. If
    * we detect someone trying to acquire a spinlock from DEVICE_LEVEL
    * or HIGH_LEVEL, we panic.
    */
   
   __fastcall uint8_t
   KfAcquireSpinLock(REGARGS1(kspin_lock *lock))
   {
           uint8_t                 oldirql;
   
           /* I am so going to hell for this. */
           if (KeGetCurrentIrql() > DISPATCH_LEVEL)
                   panic("IRQL_NOT_LESS_THAN_OR_EQUAL");
   
           oldirql = KeRaiseIrql(DISPATCH_LEVEL);
           KeAcquireSpinLockAtDpcLevel(lock);
   
           return(oldirql);
   }
   
   __fastcall void
   KfReleaseSpinLock(REGARGS2(kspin_lock *lock, uint8_t newirql))
   {
           KeReleaseSpinLockFromDpcLevel(lock);
           KeLowerIrql(newirql);
   
           return;
   }
   
   __stdcall uint8_t
   KeGetCurrentIrql(void)
   {
           if (AT_DISPATCH_LEVEL(curthread))
                   return(DISPATCH_LEVEL);
           return(PASSIVE_LEVEL);
   }
   
   __stdcall static uint64_t
   KeQueryPerformanceCounter(freq)
           uint64_t                *freq;
   {
           if (freq != NULL)
                   *freq = hz;
   
           return((uint64_t)ticks);
   }
   
   
   static int old_ipl;
   static int ipl_raised = FALSE;
   
   __fastcall uint8_t
   KfRaiseIrql(REGARGS1(uint8_t irql))
   {
           uint8_t                 oldirql = 0;
   //#ifdef __NetBSD__
   //      uint8_t                 s;
   //#endif
   
           if (irql < KeGetCurrentIrql())
                   panic("IRQL_NOT_LESS_THAN");
   
           if (KeGetCurrentIrql() == DISPATCH_LEVEL)
                   return(DISPATCH_LEVEL);
   #ifdef __NetBSD__
           if(irql >= DISPATCH_LEVEL && !ipl_raised) {
                   old_ipl = splsoftclock();
                   ipl_raised = TRUE;
                   oldirql = win_irql;
                   win_irql = irql;
           }
   #else /* __FreeBSD__ */
           mtx_lock_spin(&sched_lock);
           oldirql = curthread->td_base_pri;
           sched_prio(curthread, PI_REALTIME);
   #if __FreeBSD_version < 600000
           curthread->td_base_pri = PI_REALTIME;
   #endif
           mtx_unlock_spin(&sched_lock);
   #endif /* __FreeBSD__ */
   
           return(oldirql);
   }
   
   __fastcall void
   KfLowerIrql(REGARGS1(uint8_t oldirql))
   {
   //#ifdef __NetBSD__
   //      uint8_t         s;
   //#endif
   
           if (oldirql == DISPATCH_LEVEL)
                   return;
   
   #ifdef __FreeBSD__
           if (KeGetCurrentIrql() != DISPATCH_LEVEL)
                   panic("IRQL_NOT_GREATER_THAN");
   #else /* __NetBSD__ */
           if (KeGetCurrentIrql() < oldirql)
                   panic("IRQL_NOT_GREATER_THAN");
   #endif
   
   #ifdef __NetBSD__
           if(oldirql < DISPATCH_LEVEL && ipl_raised) {
                   splx(old_ipl);
                   ipl_raised = FALSE;
                   win_irql = oldirql;
           }
   #else
           mtx_lock_spin(&sched_lock);
   #if __FreeBSD_version < 600000
           curthread->td_base_pri = oldirql;
   #endif
           sched_prio(curthread, oldirql);
           mtx_unlock_spin(&sched_lock);
   #endif /* __NetBSD__ */
   
           return;
   }
   
   __stdcall
   static void dummy()
   {
           printf ("hal dummy called...\n");
           return;
   }
   
   image_patch_table hal_functbl[] = {
           IMPORT_FUNC(KeStallExecutionProcessor),
           IMPORT_FUNC(WRITE_PORT_ULONG),
           IMPORT_FUNC(WRITE_PORT_USHORT),
           IMPORT_FUNC(WRITE_PORT_UCHAR),
           IMPORT_FUNC(WRITE_PORT_BUFFER_ULONG),
           IMPORT_FUNC(WRITE_PORT_BUFFER_USHORT),
           IMPORT_FUNC(WRITE_PORT_BUFFER_UCHAR),
           IMPORT_FUNC(READ_PORT_ULONG),
           IMPORT_FUNC(READ_PORT_USHORT),
           IMPORT_FUNC(READ_PORT_UCHAR),
           IMPORT_FUNC(READ_PORT_BUFFER_ULONG),
           IMPORT_FUNC(READ_PORT_BUFFER_USHORT),
           IMPORT_FUNC(READ_PORT_BUFFER_UCHAR),
           IMPORT_FUNC(KfAcquireSpinLock),
           IMPORT_FUNC(KfReleaseSpinLock),
           IMPORT_FUNC(KeGetCurrentIrql),
           IMPORT_FUNC(KeQueryPerformanceCounter),
           IMPORT_FUNC(KfLowerIrql),
           IMPORT_FUNC(KfRaiseIrql),
   
           /*
            * This last entry is a catch-all for any function we haven't
            * implemented yet. The PE import list patching routine will
            * use it for any function that doesn't have an explicit match
            * in this table.
            */
   
           { NULL, (FUNC)dummy, NULL },
   
           /* End of list. */
   
           { NULL, NULL, NULL }
   };
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  Added in v.1.3.6.2
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