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linux-next/sound/oss/sscape.c
Adrian Bunk f25ad2d3b8 [PATCH] sound/oss/sscape.c: remove dead code 
The Coverity checker found that sscape_sb_enable never get's assigned any
value different from 0, and therefore some code paths are impossible.

This patch removes this variable and the dead code paths.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25 16:25:03 -07:00

1480 lines
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/*
* sound/sscape.c
*
* Low level driver for Ensoniq SoundScape
*
*
* Copyright (C) by Hannu Savolainen 1993-1997
*
* OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
* Version 2 (June 1991). See the "COPYING" file distributed with this software
* for more info.
*
*
* Thomas Sailer : ioctl code reworked (vmalloc/vfree removed)
* Sergey Smitienko : ensoniq p'n'p support
* Christoph Hellwig : adapted to module_init/module_exit
* Bartlomiej Zolnierkiewicz : added __init to attach_sscape()
* Chris Rankin : Specify that this module owns the coprocessor
* Arnaldo C. de Melo : added missing restore_flags in sscape_pnp_upload_file
*/
#include <linux/init.h>
#include <linux/module.h>
#include "sound_config.h"
#include "sound_firmware.h"
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/signal.h>
#include <linux/fcntl.h>
#include <linux/ctype.h>
#include <linux/stddef.h>
#include <linux/kmod.h>
#include <asm/dma.h>
#include <asm/io.h>
#include <linux/wait.h>
#include <linux/slab.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/proc_fs.h>
#include <linux/spinlock.h>
#include "coproc.h"
#include "ad1848.h"
#include "mpu401.h"
/*
* I/O ports
*/
#define MIDI_DATA 0
#define MIDI_CTRL 1
#define HOST_CTRL 2
#define TX_READY 0x02
#define RX_READY 0x01
#define HOST_DATA 3
#define ODIE_ADDR 4
#define ODIE_DATA 5
/*
* Indirect registers
*/
#define GA_INTSTAT_REG 0
#define GA_INTENA_REG 1
#define GA_DMAA_REG 2
#define GA_DMAB_REG 3
#define GA_INTCFG_REG 4
#define GA_DMACFG_REG 5
#define GA_CDCFG_REG 6
#define GA_SMCFGA_REG 7
#define GA_SMCFGB_REG 8
#define GA_HMCTL_REG 9
/*
* DMA channel identifiers (A and B)
*/
#define SSCAPE_DMA_A 0
#define SSCAPE_DMA_B 1
#define PORT(name) (devc->base+name)
/*
* Host commands recognized by the OBP microcode
*/
#define CMD_GEN_HOST_ACK 0x80
#define CMD_GEN_MPU_ACK 0x81
#define CMD_GET_BOARD_TYPE 0x82
#define CMD_SET_CONTROL 0x88 /* Old firmware only */
#define CMD_GET_CONTROL 0x89 /* Old firmware only */
#define CTL_MASTER_VOL 0
#define CTL_MIC_MODE 2
#define CTL_SYNTH_VOL 4
#define CTL_WAVE_VOL 7
#define CMD_SET_EXTMIDI 0x8a
#define CMD_GET_EXTMIDI 0x8b
#define CMD_SET_MT32 0x8c
#define CMD_GET_MT32 0x8d
#define CMD_ACK 0x80
#define IC_ODIE 1
#define IC_OPUS 2
typedef struct sscape_info
{
int base, irq, dma;
int codec, codec_irq; /* required to setup pnp cards*/
int codec_type;
int ic_type;
char* raw_buf;
unsigned long raw_buf_phys;
int buffsize; /* -------------------------- */
spinlock_t lock;
int ok; /* Properly detected */
int failed;
int dma_allocated;
int codec_audiodev;
int opened;
int *osp;
int my_audiodev;
} sscape_info;
static struct sscape_info adev_info = {
0
};
static struct sscape_info *devc = &adev_info;
static int sscape_mididev = -1;
/* Some older cards have assigned interrupt bits differently than new ones */
static char valid_interrupts_old[] = {
9, 7, 5, 15
};
static char valid_interrupts_new[] = {
9, 5, 7, 10
};
static char *valid_interrupts = valid_interrupts_new;
/*
* See the bottom of the driver. This can be set by spea =0/1.
*/
#ifdef REVEAL_SPEA
static char old_hardware = 1;
#else
static char old_hardware;
#endif
static void sleep(unsigned howlong)
{
current->state = TASK_INTERRUPTIBLE;
schedule_timeout(howlong);
}
static unsigned char sscape_read(struct sscape_info *devc, int reg)
{
unsigned long flags;
unsigned char val;
spin_lock_irqsave(&devc->lock,flags);
outb(reg, PORT(ODIE_ADDR));
val = inb(PORT(ODIE_DATA));
spin_unlock_irqrestore(&devc->lock,flags);
return val;
}
static void __sscape_write(int reg, int data)
{
outb(reg, PORT(ODIE_ADDR));
outb(data, PORT(ODIE_DATA));
}
static void sscape_write(struct sscape_info *devc, int reg, int data)
{
unsigned long flags;
spin_lock_irqsave(&devc->lock,flags);
__sscape_write(reg, data);
spin_unlock_irqrestore(&devc->lock,flags);
}
static unsigned char sscape_pnp_read_codec(sscape_info* devc, unsigned char reg)
{
unsigned char res;
unsigned long flags;
spin_lock_irqsave(&devc->lock,flags);
outb( reg, devc -> codec);
res = inb (devc -> codec + 1);
spin_unlock_irqrestore(&devc->lock,flags);
return res;
}
static void sscape_pnp_write_codec(sscape_info* devc, unsigned char reg, unsigned char data)
{
unsigned long flags;
spin_lock_irqsave(&devc->lock,flags);
outb( reg, devc -> codec);
outb( data, devc -> codec + 1);
spin_unlock_irqrestore(&devc->lock,flags);
}
static void host_open(struct sscape_info *devc)
{
outb((0x00), PORT(HOST_CTRL)); /* Put the board to the host mode */
}
static void host_close(struct sscape_info *devc)
{
outb((0x03), PORT(HOST_CTRL)); /* Put the board to the MIDI mode */
}
static int host_write(struct sscape_info *devc, unsigned char *data, int count)
{
unsigned long flags;
int i, timeout_val;
spin_lock_irqsave(&devc->lock,flags);
/*
* Send the command and data bytes
*/
for (i = 0; i < count; i++)
{
for (timeout_val = 10000; timeout_val > 0; timeout_val--)
if (inb(PORT(HOST_CTRL)) & TX_READY)
break;
if (timeout_val <= 0)
{
spin_unlock_irqrestore(&devc->lock,flags);
return 0;
}
outb(data[i], PORT(HOST_DATA));
}
spin_unlock_irqrestore(&devc->lock,flags);
return 1;
}
static int host_read(struct sscape_info *devc)
{
unsigned long flags;
int timeout_val;
unsigned char data;
spin_lock_irqsave(&devc->lock,flags);
/*
* Read a byte
*/
for (timeout_val = 10000; timeout_val > 0; timeout_val--)
if (inb(PORT(HOST_CTRL)) & RX_READY)
break;
if (timeout_val <= 0)
{
spin_unlock_irqrestore(&devc->lock,flags);
return -1;
}
data = inb(PORT(HOST_DATA));
spin_unlock_irqrestore(&devc->lock,flags);
return data;
}
#if 0 /* unused */
static int host_command1(struct sscape_info *devc, int cmd)
{
unsigned char buf[10];
buf[0] = (unsigned char) (cmd & 0xff);
return host_write(devc, buf, 1);
}
#endif /* unused */
static int host_command2(struct sscape_info *devc, int cmd, int parm1)
{
unsigned char buf[10];
buf[0] = (unsigned char) (cmd & 0xff);
buf[1] = (unsigned char) (parm1 & 0xff);
return host_write(devc, buf, 2);
}
static int host_command3(struct sscape_info *devc, int cmd, int parm1, int parm2)
{
unsigned char buf[10];
buf[0] = (unsigned char) (cmd & 0xff);
buf[1] = (unsigned char) (parm1 & 0xff);
buf[2] = (unsigned char) (parm2 & 0xff);
return host_write(devc, buf, 3);
}
static void set_mt32(struct sscape_info *devc, int value)
{
host_open(devc);
host_command2(devc, CMD_SET_MT32, value ? 1 : 0);
if (host_read(devc) != CMD_ACK)
{
/* printk( "SNDSCAPE: Setting MT32 mode failed\n"); */
}
host_close(devc);
}
static void set_control(struct sscape_info *devc, int ctrl, int value)
{
host_open(devc);
host_command3(devc, CMD_SET_CONTROL, ctrl, value);
if (host_read(devc) != CMD_ACK)
{
/* printk( "SNDSCAPE: Setting control (%d) failed\n", ctrl); */
}
host_close(devc);
}
static void do_dma(struct sscape_info *devc, int dma_chan, unsigned long buf, int blk_size, int mode)
{
unsigned char temp;
if (dma_chan != SSCAPE_DMA_A)
{
printk(KERN_WARNING "soundscape: Tried to use DMA channel != A. Why?\n");
return;
}
audio_devs[devc->codec_audiodev]->flags &= ~DMA_AUTOMODE;
DMAbuf_start_dma(devc->codec_audiodev, buf, blk_size, mode);
audio_devs[devc->codec_audiodev]->flags |= DMA_AUTOMODE;
temp = devc->dma << 4; /* Setup DMA channel select bits */
if (devc->dma <= 3)
temp |= 0x80; /* 8 bit DMA channel */
temp |= 1; /* Trigger DMA */
sscape_write(devc, GA_DMAA_REG, temp);
temp &= 0xfe; /* Clear DMA trigger */
sscape_write(devc, GA_DMAA_REG, temp);
}
static int verify_mpu(struct sscape_info *devc)
{
/*
* The SoundScape board could be in three modes (MPU, 8250 and host).
* If the card is not in the MPU mode, enabling the MPU driver will
* cause infinite loop (the driver believes that there is always some
* received data in the buffer.
*
* Detect this by looking if there are more than 10 received MIDI bytes
* (0x00) in the buffer.
*/
int i;
for (i = 0; i < 10; i++)
{
if (inb(devc->base + HOST_CTRL) & 0x80)
return 1;
if (inb(devc->base) != 0x00)
return 1;
}
printk(KERN_WARNING "SoundScape: The device is not in the MPU-401 mode\n");
return 0;
}
static int sscape_coproc_open(void *dev_info, int sub_device)
{
if (sub_device == COPR_MIDI)
{
set_mt32(devc, 0);
if (!verify_mpu(devc))
return -EIO;
}
return 0;
}
static void sscape_coproc_close(void *dev_info, int sub_device)
{
struct sscape_info *devc = dev_info;
unsigned long flags;
spin_lock_irqsave(&devc->lock,flags);
if (devc->dma_allocated)
{
__sscape_write(GA_DMAA_REG, 0x20); /* DMA channel disabled */
devc->dma_allocated = 0;
}
spin_unlock_irqrestore(&devc->lock,flags);
return;
}
static void sscape_coproc_reset(void *dev_info)
{
}
static int sscape_download_boot(struct sscape_info *devc, unsigned char *block, int size, int flag)
{
unsigned long flags;
unsigned char temp;
volatile int done, timeout_val;
static unsigned char codec_dma_bits;
if (flag & CPF_FIRST)
{
/*
* First block. Have to allocate DMA and to reset the board
* before continuing.
*/
spin_lock_irqsave(&devc->lock,flags);
codec_dma_bits = sscape_read(devc, GA_CDCFG_REG);
if (devc->dma_allocated == 0)
devc->dma_allocated = 1;
spin_unlock_irqrestore(&devc->lock,flags);
sscape_write(devc, GA_HMCTL_REG,
(temp = sscape_read(devc, GA_HMCTL_REG)) & 0x3f); /*Reset */
for (timeout_val = 10000; timeout_val > 0; timeout_val--)
sscape_read(devc, GA_HMCTL_REG); /* Delay */
/* Take board out of reset */
sscape_write(devc, GA_HMCTL_REG,
(temp = sscape_read(devc, GA_HMCTL_REG)) | 0x80);
}
/*
* Transfer one code block using DMA
*/
if (audio_devs[devc->codec_audiodev]->dmap_out->raw_buf == NULL)
{
printk(KERN_WARNING "soundscape: DMA buffer not available\n");
return 0;
}
memcpy(audio_devs[devc->codec_audiodev]->dmap_out->raw_buf, block, size);
spin_lock_irqsave(&devc->lock,flags);
/******** INTERRUPTS DISABLED NOW ********/
do_dma(devc, SSCAPE_DMA_A,
audio_devs[devc->codec_audiodev]->dmap_out->raw_buf_phys,
size, DMA_MODE_WRITE);
/*
* Wait until transfer completes.
*/
done = 0;
timeout_val = 30;
while (!done && timeout_val-- > 0)
{
int resid;
if (HZ / 50)
sleep(HZ / 50);
clear_dma_ff(devc->dma);
if ((resid = get_dma_residue(devc->dma)) == 0)
done = 1;
}
spin_unlock_irqrestore(&devc->lock,flags);
if (!done)
return 0;
if (flag & CPF_LAST)
{
/*
* Take the board out of reset
*/
outb((0x00), PORT(HOST_CTRL));
outb((0x00), PORT(MIDI_CTRL));
temp = sscape_read(devc, GA_HMCTL_REG);
temp |= 0x40;
sscape_write(devc, GA_HMCTL_REG, temp); /* Kickstart the board */
/*
* Wait until the ODB wakes up
*/
spin_lock_irqsave(&devc->lock,flags);
done = 0;
timeout_val = 5 * HZ;
while (!done && timeout_val-- > 0)
{
unsigned char x;
sleep(1);
x = inb(PORT(HOST_DATA));
if (x == 0xff || x == 0xfe) /* OBP startup acknowledge */
{
DDB(printk("Soundscape: Acknowledge = %x\n", x));
done = 1;
}
}
sscape_write(devc, GA_CDCFG_REG, codec_dma_bits);
spin_unlock_irqrestore(&devc->lock,flags);
if (!done)
{
printk(KERN_ERR "soundscape: The OBP didn't respond after code download\n");
return 0;
}
spin_lock_irqsave(&devc->lock,flags);
done = 0;
timeout_val = 5 * HZ;
while (!done && timeout_val-- > 0)
{
sleep(1);
if (inb(PORT(HOST_DATA)) == 0xfe) /* Host startup acknowledge */
done = 1;
}
spin_unlock_irqrestore(&devc->lock,flags);
if (!done)
{
printk(KERN_ERR "soundscape: OBP Initialization failed.\n");
return 0;
}
printk(KERN_INFO "SoundScape board initialized OK\n");
set_control(devc, CTL_MASTER_VOL, 100);
set_control(devc, CTL_SYNTH_VOL, 100);
#ifdef SSCAPE_DEBUG3
/*
* Temporary debugging aid. Print contents of the registers after
* downloading the code.
*/
{
int i;
for (i = 0; i < 13; i++)
printk("I%d = %02x (new value)\n", i, sscape_read(devc, i));
}
#endif
}
return 1;
}
static int download_boot_block(void *dev_info, copr_buffer * buf)
{
if (buf->len <= 0 || buf->len > sizeof(buf->data))
return -EINVAL;
if (!sscape_download_boot(devc, buf->data, buf->len, buf->flags))
{
printk(KERN_ERR "soundscape: Unable to load microcode block to the OBP.\n");
return -EIO;
}
return 0;
}
static int sscape_coproc_ioctl(void *dev_info, unsigned int cmd, void __user *arg, int local)
{
copr_buffer *buf;
int err;
switch (cmd)
{
case SNDCTL_COPR_RESET:
sscape_coproc_reset(dev_info);
return 0;
case SNDCTL_COPR_LOAD:
buf = (copr_buffer *) vmalloc(sizeof(copr_buffer));
if (buf == NULL)
return -ENOSPC;
if (copy_from_user(buf, arg, sizeof(copr_buffer)))
{
vfree(buf);
return -EFAULT;
}
err = download_boot_block(dev_info, buf);
vfree(buf);
return err;
default:
return -EINVAL;
}
}
static coproc_operations sscape_coproc_operations =
{
"SoundScape M68K",
THIS_MODULE,
sscape_coproc_open,
sscape_coproc_close,
sscape_coproc_ioctl,
sscape_coproc_reset,
&adev_info
};
static struct resource *sscape_ports;
static int sscape_is_pnp;
static void __init attach_sscape(struct address_info *hw_config)
{
#ifndef SSCAPE_REGS
/*
* Config register values for Spea/V7 Media FX and Ensoniq S-2000.
* These values are card
* dependent. If you have another SoundScape based card, you have to
* find the correct values. Do the following:
* - Compile this driver with SSCAPE_DEBUG1 defined.
* - Shut down and power off your machine.
* - Boot with DOS so that the SSINIT.EXE program is run.
* - Warm boot to {Linux|SYSV|BSD} and write down the lines displayed
* when detecting the SoundScape.
* - Modify the following list to use the values printed during boot.
* Undefine the SSCAPE_DEBUG1
*/
#define SSCAPE_REGS { \
/* I0 */ 0x00, \
/* I1 */ 0xf0, /* Note! Ignored. Set always to 0xf0 */ \
/* I2 */ 0x20, /* Note! Ignored. Set always to 0x20 */ \
/* I3 */ 0x20, /* Note! Ignored. Set always to 0x20 */ \
/* I4 */ 0xf5, /* Ignored */ \
/* I5 */ 0x10, \
/* I6 */ 0x00, \
/* I7 */ 0x2e, /* I7 MEM config A. Likely to vary between models */ \
/* I8 */ 0x00, /* I8 MEM config B. Likely to vary between models */ \
/* I9 */ 0x40 /* Ignored */ \
}
#endif
unsigned long flags;
static unsigned char regs[10] = SSCAPE_REGS;
int i, irq_bits = 0xff;
if (old_hardware)
{
valid_interrupts = valid_interrupts_old;
conf_printf("Ensoniq SoundScape (old)", hw_config);
}
else
conf_printf("Ensoniq SoundScape", hw_config);
for (i = 0; i < 4; i++)
{
if (hw_config->irq == valid_interrupts[i])
{
irq_bits = i;
break;
}
}
if (hw_config->irq > 15 || (regs[4] = irq_bits == 0xff))
{
printk(KERN_ERR "Invalid IRQ%d\n", hw_config->irq);
release_region(devc->base, 2);
release_region(devc->base + 2, 6);
if (sscape_is_pnp)
release_region(devc->codec, 2);
return;
}
if (!sscape_is_pnp) {
spin_lock_irqsave(&devc->lock,flags);
/* Host interrupt enable */
sscape_write(devc, 1, 0xf0); /* All interrupts enabled */
/* DMA A status/trigger register */
sscape_write(devc, 2, 0x20); /* DMA channel disabled */
/* DMA B status/trigger register */
sscape_write(devc, 3, 0x20); /* DMA channel disabled */
/* Host interrupt config reg */
sscape_write(devc, 4, 0xf0 | (irq_bits << 2) | irq_bits);
/* Don't destroy CD-ROM DMA config bits (0xc0) */
sscape_write(devc, 5, (regs[5] & 0x3f) | (sscape_read(devc, 5) & 0xc0));
/* CD-ROM config (WSS codec actually) */
sscape_write(devc, 6, regs[6]);
sscape_write(devc, 7, regs[7]);
sscape_write(devc, 8, regs[8]);
/* Master control reg. Don't modify CR-ROM bits. Disable SB emul */
sscape_write(devc, 9, (sscape_read(devc, 9) & 0xf0) | 0x08);
spin_unlock_irqrestore(&devc->lock,flags);
}
#ifdef SSCAPE_DEBUG2
/*
* Temporary debugging aid. Print contents of the registers after
* changing them.
*/
{
int i;
for (i = 0; i < 13; i++)
printk("I%d = %02x (new value)\n", i, sscape_read(devc, i));
}
#endif
if (probe_mpu401(hw_config, sscape_ports))
hw_config->always_detect = 1;
hw_config->name = "SoundScape";
hw_config->irq *= -1; /* Negative value signals IRQ sharing */
attach_mpu401(hw_config, THIS_MODULE);
hw_config->irq *= -1; /* Restore it */
if (hw_config->slots[1] != -1) /* The MPU driver installed itself */
{
sscape_mididev = hw_config->slots[1];
midi_devs[hw_config->slots[1]]->coproc = &sscape_coproc_operations;
}
sscape_write(devc, GA_INTENA_REG, 0x80); /* Master IRQ enable */
devc->ok = 1;
devc->failed = 0;
}
static int detect_ga(sscape_info * devc)
{
unsigned char save;
DDB(printk("Entered Soundscape detect_ga(%x)\n", devc->base));
/*
* First check that the address register of "ODIE" is
* there and that it has exactly 4 writable bits.
* First 4 bits
*/
if ((save = inb(PORT(ODIE_ADDR))) & 0xf0)
{
DDB(printk("soundscape: Detect error A\n"));
return 0;
}
outb((0x00), PORT(ODIE_ADDR));
if (inb(PORT(ODIE_ADDR)) != 0x00)
{
DDB(printk("soundscape: Detect error B\n"));
return 0;
}
outb((0xff), PORT(ODIE_ADDR));
if (inb(PORT(ODIE_ADDR)) != 0x0f)
{
DDB(printk("soundscape: Detect error C\n"));
return 0;
}
outb((save), PORT(ODIE_ADDR));
/*
* Now verify that some indirect registers return zero on some bits.
* This may break the driver with some future revisions of "ODIE" but...
*/
if (sscape_read(devc, 0) & 0x0c)
{
DDB(printk("soundscape: Detect error D (%x)\n", sscape_read(devc, 0)));
return 0;
}
if (sscape_read(devc, 1) & 0x0f)
{
DDB(printk("soundscape: Detect error E\n"));
return 0;
}
if (sscape_read(devc, 5) & 0x0f)
{
DDB(printk("soundscape: Detect error F\n"));
return 0;
}
return 1;
}
static int sscape_read_host_ctrl(sscape_info* devc)
{
return host_read(devc);
}
static void sscape_write_host_ctrl2(sscape_info *devc, int a, int b)
{
host_command2(devc, a, b);
}
static int sscape_alloc_dma(sscape_info *devc)
{
char *start_addr, *end_addr;
int dma_pagesize;
int sz, size;
struct page *page;
if (devc->raw_buf != NULL) return 0; /* Already done */
dma_pagesize = (devc->dma < 4) ? (64 * 1024) : (128 * 1024);
devc->raw_buf = NULL;
devc->buffsize = 8192*4;
if (devc->buffsize > dma_pagesize) devc->buffsize = dma_pagesize;
start_addr = NULL;
/*
* Now loop until we get a free buffer. Try to get smaller buffer if
* it fails. Don't accept smaller than 8k buffer for performance
* reasons.
*/
while (start_addr == NULL && devc->buffsize > PAGE_SIZE) {
for (sz = 0, size = PAGE_SIZE; size < devc->buffsize; sz++, size <<= 1);
devc->buffsize = PAGE_SIZE * (1 << sz);
start_addr = (char *) __get_free_pages(GFP_ATOMIC|GFP_DMA, sz);
if (start_addr == NULL) devc->buffsize /= 2;
}
if (start_addr == NULL) {
printk(KERN_ERR "sscape pnp init error: Couldn't allocate DMA buffer\n");
return 0;
} else {
/* make some checks */
end_addr = start_addr + devc->buffsize - 1;
/* now check if it fits into the same dma-pagesize */
if (((long) start_addr & ~(dma_pagesize - 1)) != ((long) end_addr & ~(dma_pagesize - 1))
|| end_addr >= (char *) (MAX_DMA_ADDRESS)) {
printk(KERN_ERR "sscape pnp: Got invalid address 0x%lx for %db DMA-buffer\n", (long) start_addr, devc->buffsize);
return 0;
}
}
devc->raw_buf = start_addr;
devc->raw_buf_phys = virt_to_bus(start_addr);
for (page = virt_to_page(start_addr); page <= virt_to_page(end_addr); page++)
SetPageReserved(page);
return 1;
}
static void sscape_free_dma(sscape_info *devc)
{
int sz, size;
unsigned long start_addr, end_addr;
struct page *page;
if (devc->raw_buf == NULL) return;
for (sz = 0, size = PAGE_SIZE; size < devc->buffsize; sz++, size <<= 1);
start_addr = (unsigned long) devc->raw_buf;
end_addr = start_addr + devc->buffsize;
for (page = virt_to_page(start_addr); page <= virt_to_page(end_addr); page++)
ClearPageReserved(page);
free_pages((unsigned long) devc->raw_buf, sz);
devc->raw_buf = NULL;
}
/* Intel version !!!!!!!!! */
static int sscape_start_dma(int chan, unsigned long physaddr, int count, int dma_mode)
{
unsigned long flags;
flags = claim_dma_lock();
disable_dma(chan);
clear_dma_ff(chan);
set_dma_mode(chan, dma_mode);
set_dma_addr(chan, physaddr);
set_dma_count(chan, count);
enable_dma(chan);
release_dma_lock(flags);
return 0;
}
static void sscape_pnp_start_dma(sscape_info* devc, int arg )
{
int reg;
if (arg == 0) reg = 2;
else reg = 3;
sscape_write(devc, reg, sscape_read( devc, reg) | 0x01);
sscape_write(devc, reg, sscape_read( devc, reg) & 0xFE);
}
static int sscape_pnp_wait_dma (sscape_info* devc, int arg )
{
int reg;
unsigned long i;
unsigned char d;
if (arg == 0) reg = 2;
else reg = 3;
sleep ( 1 );
i = 0;
do {
d = sscape_read(devc, reg) & 1;
if ( d == 1) break;
i++;
} while (i < 500000);
d = sscape_read(devc, reg) & 1;
return d;
}
static int sscape_pnp_alloc_dma(sscape_info* devc)
{
/* printk(KERN_INFO "sscape: requesting dma\n"); */
if (request_dma(devc -> dma, "sscape")) return 0;
/* printk(KERN_INFO "sscape: dma channel allocated\n"); */
if (!sscape_alloc_dma(devc)) {
free_dma(devc -> dma);
return 0;
};
return 1;
}
static void sscape_pnp_free_dma(sscape_info* devc)
{
sscape_free_dma( devc);
free_dma(devc -> dma );
/* printk(KERN_INFO "sscape: dma released\n"); */
}
static int sscape_pnp_upload_file(sscape_info* devc, char* fn)
{
int done = 0;
int timeout_val;
char* data,*dt;
int len,l;
unsigned long flags;
sscape_write( devc, 9, sscape_read(devc, 9 ) & 0x3F );
sscape_write( devc, 2, (devc -> dma << 4) | 0x80 );
sscape_write( devc, 3, 0x20 );
sscape_write( devc, 9, sscape_read( devc, 9 ) | 0x80 );
len = mod_firmware_load(fn, &data);
if (len == 0) {
printk(KERN_ERR "sscape: file not found: %s\n", fn);
return 0;
}
dt = data;
spin_lock_irqsave(&devc->lock,flags);
while ( len > 0 ) {
if (len > devc -> buffsize) l = devc->buffsize;
else l = len;
len -= l;
memcpy(devc->raw_buf, dt, l); dt += l;
sscape_start_dma(devc->dma, devc->raw_buf_phys, l, 0x48);
sscape_pnp_start_dma ( devc, 0 );
if (sscape_pnp_wait_dma ( devc, 0 ) == 0) {
spin_unlock_irqrestore(&devc->lock,flags);
return 0;
}
}
spin_unlock_irqrestore(&devc->lock,flags);
vfree(data);
outb(0, devc -> base + 2);
outb(0, devc -> base);
sscape_write ( devc, 9, sscape_read( devc, 9 ) | 0x40);
timeout_val = 5 * HZ;
while (!done && timeout_val-- > 0)
{
unsigned char x;
sleep(1);
x = inb( devc -> base + 3);
if (x == 0xff || x == 0xfe) /* OBP startup acknowledge */
{
//printk(KERN_ERR "Soundscape: Acknowledge = %x\n", x);
done = 1;
}
}
timeout_val = 5 * HZ;
done = 0;
while (!done && timeout_val-- > 0)
{
unsigned char x;
sleep(1);
x = inb( devc -> base + 3);
if (x == 0xfe) /* OBP startup acknowledge */
{
//printk(KERN_ERR "Soundscape: Acknowledge = %x\n", x);
done = 1;
}
}
if ( !done ) printk(KERN_ERR "soundscape: OBP Initialization failed.\n");
sscape_write( devc, 2, devc->ic_type == IC_ODIE ? 0x70 : 0x40);
sscape_write( devc, 3, (devc -> dma << 4) + 0x80);
return 1;
}
static void __init sscape_pnp_init_hw(sscape_info* devc)
{
unsigned char midi_irq = 0, sb_irq = 0;
unsigned i;
static char code_file_name[23] = "/sndscape/sndscape.cox";
int sscape_joystic_enable = 0x7f;
int sscape_mic_enable = 0;
int sscape_ext_midi = 0;
if ( !sscape_pnp_alloc_dma(devc) ) {
printk(KERN_ERR "sscape: faild to allocate dma\n");
return;
}
for (i = 0; i < 4; i++) {
if ( devc -> irq == valid_interrupts[i] )
midi_irq = i;
if ( devc -> codec_irq == valid_interrupts[i] )
sb_irq = i;
}
sscape_write( devc, 5, 0x50);
sscape_write( devc, 7, 0x2e);
sscape_write( devc, 8, 0x00);
sscape_write( devc, 2, devc->ic_type == IC_ODIE ? 0x70 : 0x40);
sscape_write( devc, 3, ( devc -> dma << 4) | 0x80);
sscape_write (devc, 4, 0xF0 | (midi_irq<<2) | midi_irq);
i = 0x10; //sscape_read(devc, 9) & (devc->ic_type == IC_ODIE ? 0xf0 : 0xc0);
if (sscape_joystic_enable) i |= 8;
sscape_write (devc, 9, i);
sscape_write (devc, 6, 0x80);
sscape_write (devc, 1, 0x80);
if (devc -> codec_type == 2) {
sscape_pnp_write_codec( devc, 0x0C, 0x50);
sscape_pnp_write_codec( devc, 0x10, sscape_pnp_read_codec( devc, 0x10) & 0x3F);
sscape_pnp_write_codec( devc, 0x11, sscape_pnp_read_codec( devc, 0x11) | 0xC0);
sscape_pnp_write_codec( devc, 29, 0x20);
}
if (sscape_pnp_upload_file(devc, "/sndscape/scope.cod") == 0 ) {
printk(KERN_ERR "sscape: faild to upload file /sndscape/scope.cod\n");
sscape_pnp_free_dma(devc);
return;
}
i = sscape_read_host_ctrl( devc );
if ( (i & 0x0F) > 7 ) {
printk(KERN_ERR "sscape: scope.cod faild\n");
sscape_pnp_free_dma(devc);
return;
}
if ( i & 0x10 ) sscape_write( devc, 7, 0x2F);
code_file_name[21] = (char) ( i & 0x0F) + 0x30;
if (sscape_pnp_upload_file( devc, code_file_name) == 0) {
printk(KERN_ERR "sscape: faild to upload file %s\n", code_file_name);
sscape_pnp_free_dma(devc);
return;
}
if (devc->ic_type != IC_ODIE) {
sscape_pnp_write_codec( devc, 10, (sscape_pnp_read_codec(devc, 10) & 0x7f) |
( sscape_mic_enable == 0 ? 0x00 : 0x80) );
}
sscape_write_host_ctrl2( devc, 0x84, 0x64 ); /* MIDI volume */
sscape_write_host_ctrl2( devc, 0x86, 0x64 ); /* MIDI volume?? */
sscape_write_host_ctrl2( devc, 0x8A, sscape_ext_midi);
sscape_pnp_write_codec ( devc, 6, 0x3f ); //WAV_VOL
sscape_pnp_write_codec ( devc, 7, 0x3f ); //WAV_VOL
sscape_pnp_write_codec ( devc, 2, 0x1F ); //WD_CDXVOLL
sscape_pnp_write_codec ( devc, 3, 0x1F ); //WD_CDXVOLR
if (devc -> codec_type == 1) {
sscape_pnp_write_codec ( devc, 4, 0x1F );
sscape_pnp_write_codec ( devc, 5, 0x1F );
sscape_write_host_ctrl2( devc, 0x88, sscape_mic_enable);
} else {
int t;
sscape_pnp_write_codec ( devc, 0x10, 0x1F << 1);
sscape_pnp_write_codec ( devc, 0x11, 0xC0 | (0x1F << 1));
t = sscape_pnp_read_codec( devc, 0x00) & 0xDF;
if ( (sscape_mic_enable == 0)) t |= 0;
else t |= 0x20;
sscape_pnp_write_codec ( devc, 0x00, t);
t = sscape_pnp_read_codec( devc, 0x01) & 0xDF;
if ( (sscape_mic_enable == 0) ) t |= 0;
else t |= 0x20;
sscape_pnp_write_codec ( devc, 0x01, t);
sscape_pnp_write_codec ( devc, 0x40 | 29 , 0x20);
outb(0, devc -> codec);
}
if (devc -> ic_type == IC_OPUS ) {
int i = sscape_read( devc, 9 );
sscape_write( devc, 9, i | 3 );
sscape_write( devc, 3, 0x40);
if (request_region(0x228, 1, "sscape setup junk")) {
outb(0, 0x228);
release_region(0x228,1);
}
sscape_write( devc, 3, (devc -> dma << 4) | 0x80);
sscape_write( devc, 9, i );
}
host_close ( devc );
sscape_pnp_free_dma(devc);
}
static int __init detect_sscape_pnp(sscape_info* devc)
{
long i, irq_bits = 0xff;
unsigned int d;
DDB(printk("Entered detect_sscape_pnp(%x)\n", devc->base));
if (!request_region(devc->codec, 2, "sscape codec")) {
printk(KERN_ERR "detect_sscape_pnp: port %x is not free\n", devc->codec);
return 0;
}
if ((inb(devc->base + 2) & 0x78) != 0)
goto fail;
d = inb ( devc -> base + 4) & 0xF0;
if (d & 0x80)
goto fail;
if (d == 0) {
devc->codec_type = 1;
devc->ic_type = IC_ODIE;
} else if ( (d & 0x60) != 0) {
devc->codec_type = 2;
devc->ic_type = IC_OPUS;
} else if ( (d & 0x40) != 0) { /* WTF? */
devc->codec_type = 2;
devc->ic_type = IC_ODIE;
} else
goto fail;
sscape_is_pnp = 1;
outb(0xFA, devc -> base+4);
if ((inb( devc -> base+4) & 0x9F) != 0x0A)
goto fail;
outb(0xFE, devc -> base+4);
if ( (inb(devc -> base+4) & 0x9F) != 0x0E)
goto fail;
if ( (inb(devc -> base+5) & 0x9F) != 0x0E)
goto fail;
if (devc->codec_type == 2) {
if (devc->codec != devc->base + 8) {
printk("soundscape warning: incorrect codec port specified\n");
goto fail;
}
d = 0x10 | (sscape_read(devc, 9) & 0xCF);
sscape_write(devc, 9, d);
sscape_write(devc, 6, 0x80);
} else {
//todo: check codec is not base + 8
}
d = (sscape_read(devc, 9) & 0x3F) | 0xC0;
sscape_write(devc, 9, d);
for (i = 0; i < 550000; i++)
if ( !(inb(devc -> codec) & 0x80) ) break;
d = inb(devc -> codec);
if (d & 0x80)
goto fail;
if ( inb(devc -> codec + 2) == 0xFF)
goto fail;
sscape_write(devc, 9, sscape_read(devc, 9) & 0x3F );
d = inb(devc -> codec) & 0x80;
if ( d == 0) {
printk(KERN_INFO "soundscape: hardware detected\n");
valid_interrupts = valid_interrupts_new;
} else {
printk(KERN_INFO "soundscape: board looks like media fx\n");
valid_interrupts = valid_interrupts_old;
old_hardware = 1;
}
sscape_write( devc, 9, 0xC0 | (sscape_read(devc, 9) & 0x3F) );
for (i = 0; i < 550000; i++)
if ( !(inb(devc -> codec) & 0x80))
break;
sscape_pnp_init_hw(devc);
for (i = 0; i < 4; i++)
{
if (devc->codec_irq == valid_interrupts[i]) {
irq_bits = i;
break;
}
}
sscape_write(devc, GA_INTENA_REG, 0x00);
sscape_write(devc, GA_DMACFG_REG, 0x50);
sscape_write(devc, GA_DMAA_REG, 0x70);
sscape_write(devc, GA_DMAB_REG, 0x20);
sscape_write(devc, GA_INTCFG_REG, 0xf0);
sscape_write(devc, GA_CDCFG_REG, 0x89 | (devc->dma << 4) | (irq_bits << 1));
sscape_pnp_write_codec( devc, 0, sscape_pnp_read_codec( devc, 0) | 0x20);
sscape_pnp_write_codec( devc, 0, sscape_pnp_read_codec( devc, 1) | 0x20);
return 1;
fail:
release_region(devc->codec, 2);
return 0;
}
static int __init probe_sscape(struct address_info *hw_config)
{
devc->base = hw_config->io_base;
devc->irq = hw_config->irq;
devc->dma = hw_config->dma;
devc->osp = hw_config->osp;
#ifdef SSCAPE_DEBUG1
/*
* Temporary debugging aid. Print contents of the registers before
* changing them.
*/
{
int i;
for (i = 0; i < 13; i++)
printk("I%d = %02x (old value)\n", i, sscape_read(devc, i));
}
#endif
devc->failed = 1;
sscape_ports = request_region(devc->base, 2, "mpu401");
if (!sscape_ports)
return 0;
if (!request_region(devc->base + 2, 6, "SoundScape")) {
release_region(devc->base, 2);
return 0;
}
if (!detect_ga(devc)) {
if (detect_sscape_pnp(devc))
return 1;
release_region(devc->base, 2);
release_region(devc->base + 2, 6);
return 0;
}
if (old_hardware) /* Check that it's really an old Spea/Reveal card. */
{
unsigned char tmp;
int cc;
if (!((tmp = sscape_read(devc, GA_HMCTL_REG)) & 0xc0))
{
sscape_write(devc, GA_HMCTL_REG, tmp | 0x80);
for (cc = 0; cc < 200000; ++cc)
inb(devc->base + ODIE_ADDR);
}
}
return 1;
}
static int __init init_ss_ms_sound(struct address_info *hw_config)
{
int i, irq_bits = 0xff;
int ad_flags = 0;
struct resource *ports;
if (devc->failed)
{
printk(KERN_ERR "soundscape: Card not detected\n");
return 0;
}
if (devc->ok == 0)
{
printk(KERN_ERR "soundscape: Invalid initialization order.\n");
return 0;
}
for (i = 0; i < 4; i++)
{
if (hw_config->irq == valid_interrupts[i])
{
irq_bits = i;
break;
}
}
if (irq_bits == 0xff) {
printk(KERN_ERR "soundscape: Invalid MSS IRQ%d\n", hw_config->irq);
return 0;
}
if (old_hardware)
ad_flags = 0x12345677; /* Tell that we may have a CS4248 chip (Spea-V7 Media FX) */
else if (sscape_is_pnp)
ad_flags = 0x87654321; /* Tell that we have a soundscape pnp with 1845 chip */
ports = request_region(hw_config->io_base, 4, "ad1848");
if (!ports) {
printk(KERN_ERR "soundscape: ports busy\n");
return 0;
}
if (!ad1848_detect(ports, &ad_flags, hw_config->osp)) {
release_region(hw_config->io_base, 4);
return 0;
}
if (!sscape_is_pnp) /*pnp is already setup*/
{
/*
* Setup the DMA polarity.
*/
sscape_write(devc, GA_DMACFG_REG, 0x50);
/*
* Take the gate-array off of the DMA channel.
*/
sscape_write(devc, GA_DMAB_REG, 0x20);
/*
* Init the AD1848 (CD-ROM) config reg.
*/
sscape_write(devc, GA_CDCFG_REG, 0x89 | (hw_config->dma << 4) | (irq_bits << 1));
}
if (hw_config->irq == devc->irq)
printk(KERN_WARNING "soundscape: Warning! The WSS mode can't share IRQ with MIDI\n");
hw_config->slots[0] = ad1848_init(
sscape_is_pnp ? "SoundScape" : "SoundScape PNP",
ports,
hw_config->irq,
hw_config->dma,
hw_config->dma,
0,
devc->osp,
THIS_MODULE);
if (hw_config->slots[0] != -1) /* The AD1848 driver installed itself */
{
audio_devs[hw_config->slots[0]]->coproc = &sscape_coproc_operations;
devc->codec_audiodev = hw_config->slots[0];
devc->my_audiodev = hw_config->slots[0];
/* Set proper routings here (what are they) */
AD1848_REROUTE(SOUND_MIXER_LINE1, SOUND_MIXER_LINE);
}
#ifdef SSCAPE_DEBUG5
/*
* Temporary debugging aid. Print contents of the registers
* after the AD1848 device has been initialized.
*/
{
int i;
for (i = 0; i < 13; i++)
printk("I%d = %02x\n", i, sscape_read(devc, i));
}
#endif
return 1;
}
static void __exit unload_sscape(struct address_info *hw_config)
{
release_region(devc->base + 2, 6);
unload_mpu401(hw_config);
if (sscape_is_pnp)
release_region(devc->codec, 2);
}
static void __exit unload_ss_ms_sound(struct address_info *hw_config)
{
ad1848_unload(hw_config->io_base,
hw_config->irq,
devc->dma,
devc->dma,
0);
sound_unload_audiodev(hw_config->slots[0]);
}
static struct address_info cfg;
static struct address_info cfg_mpu;
static int __initdata spea = -1;
static int mss = 0;
static int __initdata dma = -1;
static int __initdata irq = -1;
static int __initdata io = -1;
static int __initdata mpu_irq = -1;
static int __initdata mpu_io = -1;
module_param(dma, int, 0);
module_param(irq, int, 0);
module_param(io, int, 0);
module_param(spea, int, 0); /* spea=0/1 set the old_hardware */
module_param(mpu_irq, int, 0);
module_param(mpu_io, int, 0);
module_param(mss, int, 0);
static int __init init_sscape(void)
{
printk(KERN_INFO "Soundscape driver Copyright (C) by Hannu Savolainen 1993-1996\n");
cfg.irq = irq;
cfg.dma = dma;
cfg.io_base = io;
cfg_mpu.irq = mpu_irq;
cfg_mpu.io_base = mpu_io;
/* WEH - Try to get right dma channel */
cfg_mpu.dma = dma;
devc->codec = cfg.io_base;
devc->codec_irq = cfg.irq;
devc->codec_type = 0;
devc->ic_type = 0;
devc->raw_buf = NULL;
spin_lock_init(&devc->lock);
if (cfg.dma == -1 || cfg.irq == -1 || cfg.io_base == -1) {
printk(KERN_ERR "DMA, IRQ, and IO port must be specified.\n");
return -EINVAL;
}
if (cfg_mpu.irq == -1 && cfg_mpu.io_base != -1) {
printk(KERN_ERR "MPU_IRQ must be specified if MPU_IO is set.\n");
return -EINVAL;
}
if(spea != -1) {
old_hardware = spea;
printk(KERN_INFO "Forcing %s hardware support.\n",
spea?"new":"old");
}
if (probe_sscape(&cfg_mpu) == 0)
return -ENODEV;
attach_sscape(&cfg_mpu);
mss = init_ss_ms_sound(&cfg);
return 0;
}
static void __exit cleanup_sscape(void)
{
if (mss)
unload_ss_ms_sound(&cfg);
unload_sscape(&cfg_mpu);
}
module_init(init_sscape);
module_exit(cleanup_sscape);
#ifndef MODULE
static int __init setup_sscape(char *str)
{
/* io, irq, dma, mpu_io, mpu_irq */
int ints[6];
str = get_options(str, ARRAY_SIZE(ints), ints);
io = ints[1];
irq = ints[2];
dma = ints[3];
mpu_io = ints[4];
mpu_irq = ints[5];
return 1;
}
__setup("sscape=", setup_sscape);
#endif
MODULE_LICENSE("GPL");
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