mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 17:08:10 +00:00
dc30a43690
Added a fix for hardware dependence bug where a sound card failure should not result in reading beyond array memory index. Signed-off-by: Asim Kadav <kadav@cs.wisc.edu> Signed-off-by: Takashi Iwai <tiwai@suse.de>
460 lines
9.5 KiB
C
460 lines
9.5 KiB
C
/*
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* sound/oss/pas2_card.c
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*
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* Detection routine for the Pro Audio Spectrum cards.
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*/
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/module.h>
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#include <linux/spinlock.h>
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#include "sound_config.h"
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#include "pas2.h"
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#include "sb.h"
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static unsigned char dma_bits[] = {
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4, 1, 2, 3, 0, 5, 6, 7
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};
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static unsigned char irq_bits[] = {
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0, 0, 1, 2, 3, 4, 5, 6, 0, 1, 7, 8, 9, 0, 10, 11
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};
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static unsigned char sb_irq_bits[] = {
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0x00, 0x00, 0x08, 0x10, 0x00, 0x18, 0x00, 0x20,
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0x00, 0x08, 0x28, 0x30, 0x38, 0, 0
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};
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static unsigned char sb_dma_bits[] = {
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0x00, 0x40, 0x80, 0xC0, 0, 0, 0, 0
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};
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/*
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* The Address Translation code is used to convert I/O register addresses to
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* be relative to the given base -register
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*/
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int pas_translate_code = 0;
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static int pas_intr_mask;
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static int pas_irq;
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static int pas_sb_base;
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DEFINE_SPINLOCK(pas_lock);
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#ifndef CONFIG_PAS_JOYSTICK
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static bool joystick;
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#else
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static bool joystick = 1;
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#endif
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#ifdef SYMPHONY_PAS
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static bool symphony = 1;
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#else
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static bool symphony;
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#endif
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#ifdef BROKEN_BUS_CLOCK
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static bool broken_bus_clock = 1;
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#else
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static bool broken_bus_clock;
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#endif
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static struct address_info cfg;
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static struct address_info cfg2;
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char pas_model = 0;
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static char *pas_model_names[] = {
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"",
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"Pro AudioSpectrum+",
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"CDPC",
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"Pro AudioSpectrum 16",
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"Pro AudioSpectrum 16D"
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};
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/*
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* pas_read() and pas_write() are equivalents of inb and outb
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* These routines perform the I/O address translation required
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* to support other than the default base address
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*/
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extern void mix_write(unsigned char data, int ioaddr);
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unsigned char pas_read(int ioaddr)
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{
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return inb(ioaddr + pas_translate_code);
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}
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void pas_write(unsigned char data, int ioaddr)
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{
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outb((data), ioaddr + pas_translate_code);
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}
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/******************* Begin of the Interrupt Handler ********************/
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static irqreturn_t pasintr(int irq, void *dev_id)
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{
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int status;
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status = pas_read(0x0B89);
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pas_write(status, 0x0B89); /* Clear interrupt */
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if (status & 0x08)
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{
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pas_pcm_interrupt(status, 1);
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status &= ~0x08;
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}
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if (status & 0x10)
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{
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pas_midi_interrupt();
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status &= ~0x10;
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}
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return IRQ_HANDLED;
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}
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int pas_set_intr(int mask)
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{
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if (!mask)
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return 0;
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pas_intr_mask |= mask;
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pas_write(pas_intr_mask, 0x0B8B);
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return 0;
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}
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int pas_remove_intr(int mask)
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{
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if (!mask)
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return 0;
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pas_intr_mask &= ~mask;
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pas_write(pas_intr_mask, 0x0B8B);
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return 0;
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}
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/******************* End of the Interrupt handler **********************/
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/******************* Begin of the Initialization Code ******************/
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static int __init config_pas_hw(struct address_info *hw_config)
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{
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char ok = 1;
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unsigned int_ptrs; /* scsi/sound interrupt pointers */
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pas_irq = hw_config->irq;
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pas_write(0x00, 0x0B8B);
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pas_write(0x36, 0x138B);
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pas_write(0x36, 0x1388);
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pas_write(0, 0x1388);
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pas_write(0x74, 0x138B);
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pas_write(0x74, 0x1389);
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pas_write(0, 0x1389);
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pas_write(0x80 | 0x40 | 0x20 | 1, 0x0B8A);
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pas_write(0x80 | 0x20 | 0x10 | 0x08 | 0x01, 0xF8A);
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pas_write(0x01 | 0x02 | 0x04 | 0x10 /*
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* |
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* 0x80
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*/ , 0xB88);
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pas_write(0x80 | (joystick ? 0x40 : 0), 0xF388);
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if (pas_irq < 0 || pas_irq > 15)
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{
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printk(KERN_ERR "PAS16: Invalid IRQ %d", pas_irq);
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hw_config->irq=-1;
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ok = 0;
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}
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else
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{
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int_ptrs = pas_read(0xF38A);
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int_ptrs = (int_ptrs & 0xf0) | irq_bits[pas_irq];
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pas_write(int_ptrs, 0xF38A);
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if (!irq_bits[pas_irq])
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{
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printk(KERN_ERR "PAS16: Invalid IRQ %d", pas_irq);
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hw_config->irq=-1;
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ok = 0;
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}
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else
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{
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if (request_irq(pas_irq, pasintr, 0, "PAS16",hw_config) < 0) {
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printk(KERN_ERR "PAS16: Cannot allocate IRQ %d\n",pas_irq);
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hw_config->irq=-1;
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ok = 0;
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}
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}
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}
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if (hw_config->dma < 0 || hw_config->dma > 7)
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{
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printk(KERN_ERR "PAS16: Invalid DMA selection %d", hw_config->dma);
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hw_config->dma=-1;
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ok = 0;
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}
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else
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{
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pas_write(dma_bits[hw_config->dma], 0xF389);
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if (!dma_bits[hw_config->dma])
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{
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printk(KERN_ERR "PAS16: Invalid DMA selection %d", hw_config->dma);
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hw_config->dma=-1;
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ok = 0;
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}
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else
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{
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if (sound_alloc_dma(hw_config->dma, "PAS16"))
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{
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printk(KERN_ERR "pas2_card.c: Can't allocate DMA channel\n");
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hw_config->dma=-1;
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ok = 0;
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}
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}
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}
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/*
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* This fixes the timing problems of the PAS due to the Symphony chipset
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* as per Media Vision. Only define this if your PAS doesn't work correctly.
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*/
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if(symphony)
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{
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outb((0x05), 0xa8);
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outb((0x60), 0xa9);
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}
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if(broken_bus_clock)
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pas_write(0x01 | 0x10 | 0x20 | 0x04, 0x8388);
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else
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/*
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* pas_write(0x01, 0x8388);
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*/
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pas_write(0x01 | 0x10 | 0x20, 0x8388);
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pas_write(0x18, 0x838A); /* ??? */
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pas_write(0x20 | 0x01, 0x0B8A); /* Mute off, filter = 17.897 kHz */
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pas_write(8, 0xBF8A);
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mix_write(0x80 | 5, 0x078B);
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mix_write(5, 0x078B);
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{
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struct address_info *sb_config;
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sb_config = &cfg2;
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if (sb_config->io_base)
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{
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unsigned char irq_dma;
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/*
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* Turn on Sound Blaster compatibility
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* bit 1 = SB emulation
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* bit 0 = MPU401 emulation (CDPC only :-( )
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*/
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pas_write(0x02, 0xF788);
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/*
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* "Emulation address"
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*/
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pas_write((sb_config->io_base >> 4) & 0x0f, 0xF789);
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pas_sb_base = sb_config->io_base;
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if (!sb_dma_bits[sb_config->dma])
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printk(KERN_ERR "PAS16 Warning: Invalid SB DMA %d\n\n", sb_config->dma);
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if (!sb_irq_bits[sb_config->irq])
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printk(KERN_ERR "PAS16 Warning: Invalid SB IRQ %d\n\n", sb_config->irq);
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irq_dma = sb_dma_bits[sb_config->dma] |
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sb_irq_bits[sb_config->irq];
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pas_write(irq_dma, 0xFB8A);
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}
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else
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pas_write(0x00, 0xF788);
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}
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if (!ok)
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printk(KERN_WARNING "PAS16: Driver not enabled\n");
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return ok;
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}
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static int __init detect_pas_hw(struct address_info *hw_config)
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{
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unsigned char board_id, foo;
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/*
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* WARNING: Setting an option like W:1 or so that disables warm boot reset
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* of the card will screw up this detect code something fierce. Adding code
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* to handle this means possibly interfering with other cards on the bus if
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* you have something on base port 0x388. SO be forewarned.
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*/
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outb((0xBC), 0x9A01); /* Activate first board */
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outb((hw_config->io_base >> 2), 0x9A01); /* Set base address */
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pas_translate_code = hw_config->io_base - 0x388;
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pas_write(1, 0xBF88); /* Select one wait states */
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board_id = pas_read(0x0B8B);
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if (board_id == 0xff)
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return 0;
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/*
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* We probably have a PAS-series board, now check for a PAS16-series board
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* by trying to change the board revision bits. PAS16-series hardware won't
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* let you do this - the bits are read-only.
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*/
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foo = board_id ^ 0xe0;
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pas_write(foo, 0x0B8B);
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foo = pas_read(0x0B8B);
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pas_write(board_id, 0x0B8B);
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if (board_id != foo)
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return 0;
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pas_model = pas_read(0xFF88);
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return pas_model;
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}
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static void __init attach_pas_card(struct address_info *hw_config)
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{
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pas_irq = hw_config->irq;
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if (detect_pas_hw(hw_config))
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{
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if ((pas_model = pas_read(0xFF88)))
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{
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char temp[100];
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if (pas_model < 0 ||
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pas_model >= ARRAY_SIZE(pas_model_names)) {
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printk(KERN_ERR "pas2 unrecognized model.\n");
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return;
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}
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sprintf(temp,
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"%s rev %d", pas_model_names[(int) pas_model],
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pas_read(0x2789));
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conf_printf(temp, hw_config);
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}
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if (config_pas_hw(hw_config))
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{
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pas_pcm_init(hw_config);
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pas_midi_init();
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pas_init_mixer();
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}
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}
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}
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static inline int __init probe_pas(struct address_info *hw_config)
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{
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return detect_pas_hw(hw_config);
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}
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static void __exit unload_pas(struct address_info *hw_config)
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{
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extern int pas_audiodev;
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extern int pas2_mididev;
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if (hw_config->dma>0)
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sound_free_dma(hw_config->dma);
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if (hw_config->irq>0)
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free_irq(hw_config->irq, hw_config);
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if(pas_audiodev!=-1)
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sound_unload_mixerdev(audio_devs[pas_audiodev]->mixer_dev);
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if(pas2_mididev!=-1)
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sound_unload_mididev(pas2_mididev);
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if(pas_audiodev!=-1)
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sound_unload_audiodev(pas_audiodev);
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}
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static int __initdata io = -1;
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static int __initdata irq = -1;
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static int __initdata dma = -1;
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static int __initdata dma16 = -1; /* Set this for modules that need it */
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static int __initdata sb_io = 0;
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static int __initdata sb_irq = -1;
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static int __initdata sb_dma = -1;
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static int __initdata sb_dma16 = -1;
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module_param(io, int, 0);
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module_param(irq, int, 0);
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module_param(dma, int, 0);
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module_param(dma16, int, 0);
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module_param(sb_io, int, 0);
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module_param(sb_irq, int, 0);
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module_param(sb_dma, int, 0);
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module_param(sb_dma16, int, 0);
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module_param(joystick, bool, 0);
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module_param(symphony, bool, 0);
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module_param(broken_bus_clock, bool, 0);
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MODULE_LICENSE("GPL");
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static int __init init_pas2(void)
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{
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printk(KERN_INFO "Pro Audio Spectrum driver Copyright (C) by Hannu Savolainen 1993-1996\n");
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cfg.io_base = io;
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cfg.irq = irq;
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cfg.dma = dma;
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cfg.dma2 = dma16;
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cfg2.io_base = sb_io;
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cfg2.irq = sb_irq;
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cfg2.dma = sb_dma;
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cfg2.dma2 = sb_dma16;
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if (cfg.io_base == -1 || cfg.dma == -1 || cfg.irq == -1) {
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printk(KERN_INFO "I/O, IRQ, DMA and type are mandatory\n");
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return -EINVAL;
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}
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if (!probe_pas(&cfg))
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return -ENODEV;
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attach_pas_card(&cfg);
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return 0;
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}
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static void __exit cleanup_pas2(void)
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{
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unload_pas(&cfg);
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}
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module_init(init_pas2);
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module_exit(cleanup_pas2);
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#ifndef MODULE
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static int __init setup_pas2(char *str)
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{
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/* io, irq, dma, dma2, sb_io, sb_irq, sb_dma, sb_dma2 */
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int ints[9];
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str = get_options(str, ARRAY_SIZE(ints), ints);
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io = ints[1];
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irq = ints[2];
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dma = ints[3];
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dma16 = ints[4];
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sb_io = ints[5];
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sb_irq = ints[6];
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sb_dma = ints[7];
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sb_dma16 = ints[8];
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return 1;
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}
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__setup("pas2=", setup_pas2);
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#endif
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