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- /*
- * OS Specific settings for Linux
- *
- * Copyright by Hannu Savolainen 1993
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
- *
- */
-
- #define ALLOW_SELECT
-
- #include <linux/param.h>
- #include <linux/types.h>
- #include <linux/errno.h>
- #include <linux/signal.h>
- #include <linux/fcntl.h>
- #include <linux/sched.h>
- #include <linux/timer.h>
- #include <linux/tty.h>
- #include <linux/ctype.h>
- #include <asm/io.h>
- #include <asm/segment.h>
- #include <asm/system.h>
- #include <asm/dma.h>
- #include <sys/kd.h>
- #include <linux/wait.h>
- #include <linux/malloc.h>
- #include <linux/string.h>
- #include <linux/soundcard.h>
-
- typedef char snd_rw_buf;
-
- #define FALSE 0
- #define TRUE 1
-
- #define COPY_FROM_USER(d, s, o, c) memcpy_fromfs((d), &((s)[o]), (c))
- #define COPY_TO_USER(d, o, s, c) memcpy_tofs(&((d)[o]), (s), (c))
- #define IOCTL_FROM_USER(d, s, o, c) memcpy_fromfs((d), &((s)[o]), (c))
- #define IOCTL_TO_USER(d, o, s, c) memcpy_tofs(&((d)[o]), (s), (c))
-
- #define GET_BYTE_FROM_USER(target, addr, offs) target = get_fs_byte(&((addr)[offs]))
- #define GET_SHORT_FROM_USER(target, addr, offs) target = get_fs_word(&((addr)[offs]))
- #define GET_WORD_FROM_USER(target, addr, offs) target = get_fs_long((long*)&((addr)[offs]))
- #define PUT_WORD_TO_USER(addr, offs, data) put_fs_long(data, (long*)&((addr)[offs]))
- #define IOCTL_IN(arg) get_fs_long((long *)(arg))
- #define IOCTL_OUT(arg, ret) snd_ioctl_return((int *)arg, ret)
-
- struct snd_wait {
- int mode; int aborting;
- };
-
- #define DEFINE_WAIT_QUEUE(name, flag) static struct wait_queue *name = NULL; \
- static volatile struct snd_wait flag = {0}
- #define DEFINE_WAIT_QUEUES(name, flag) static struct wait_queue *name = {NULL}; \
- static volatile struct snd_wait flag = {{0}}
- #define RESET_WAIT_QUEUE(q, f) {f.aborting = 0;f.mode = WK_NONE;}
- #define PROCESS_ABORTING(q, f) (/*f.aborting | */(current->signal & ~current->blocked))
- #define SET_ABORT_FLAG(q, f) f.aborting = 1
- #define TIMED_OUT(q, f) (f.mode & WK_TIMEOUT)
- #define DO_SLEEP(q, f, time_limit) \
- { unsigned long tl;\
- if (time_limit) tl = current->timeout = jiffies + (time_limit); \
- else tl = 0xffffffff; \
- f.mode = WK_SLEEP;interruptible_sleep_on(&q); \
- if (!(f.mode & WK_WAKEUP)) \
- { \
- if (current->signal & ~current->blocked) \
- f.aborting = 1; \
- else \
- if (jiffies >= tl) f.mode |= WK_TIMEOUT; \
- } \
- f.mode &= ~WK_SLEEP; \
- }
- #define SOMEONE_WAITING(q, f) (f.mode & WK_SLEEP)
- #define WAKE_UP(q, f) {f.mode = WK_WAKEUP;wake_up(&q);}
-
- #define ALLOC_DMA_CHN(chn,deviceID) request_dma(chn,deviceID)
- #define RELEASE_DMA_CHN(chn) free_dma(chn)
-
- #define GET_TIME() jiffies
- #define RELEASE_IRQ free_irq
- #define RET_ERROR(err) -err
-
- /* DISABLE_INTR is used to disable interrupts.
- These macros store the current flags to the (unsigned long) variable given
- as a parameter. RESTORE_INTR returns the interrupt enable bit to state
- before DISABLE_INTR or ENABLE_INTR */
-
- #define DISABLE_INTR(flags) __asm__ __volatile__("pushfl ; popl %0 ; cli":"=r" (flags));
- #define RESTORE_INTR(flags) __asm__ __volatile__("pushl %0 ; popfl": \
- :"r" (flags));
- /*
- KERNEL_MALLOC() allocates requested number of memory and
- KERNEL_FREE is used to free it.
- These macros are never called from interrupt, in addition the
- nbytes will never be more than 4096 bytes. Generally the driver
- will allocate memory in blocks of 4k. If the kernel has just a
- page level memory allocation, 4K can be safely used as the size
- (the nbytes parameter can be ignored).
- */
- #define KERNEL_MALLOC(nbytes) kmalloc(nbytes, GFP_KERNEL)
- #define KERNEL_FREE(addr) kfree(addr)
-
- /*
- * The macro PERMANENT_MALLOC(typecast, mem_ptr, size, linux_ptr)
- * returns size bytes of
- * (kernel virtual) memory which will never get freed by the driver.
- * This macro is called only during boot. The linux_ptr is a linux specific
- * parameter which should be ignored in other operating systems.
- * The mem_ptr is a pointer variable where the macro assigns pointer to the
- * memory area. The type is the type of the mem_ptr.
- */
- #define PERMANENT_MALLOC(typecast, mem_ptr, size, linux_ptr) \
- {mem_ptr = (typecast)linux_ptr; \
- linux_ptr += (size);}
-
- /*
- * The macro DEFINE_TIMER defines variables for the ACTIVATE_TIMER if
- * required. The name is the variable/name to be used and the proc is
- * the procedure to be called when the timer expires.
- */
-
- #define DEFINE_TIMER(name, proc) \
- static struct timer_list name = \
- {NULL, NULL, 0, 0, proc}
-
- /*
- * The ACTIVATE_TIMER requests system to call 'proc' after 'time' ticks.
- */
-
- #define ACTIVATE_TIMER(name, proc, time) \
- {name.expires = time; \
- add_timer (&name);}
-
- #define INB inb
- #define OUTB outb
-
- /*
- * SND_SA_INTERRUPT is required. Otherwise the IRQ number is not passed
- * the handler.
- */
- #define SND_SA_INTERRUPT
-