diff options
Diffstat (limited to 'sound/oss/nec_vrc5477.c')
| -rw-r--r-- | sound/oss/nec_vrc5477.c | 2060 |
1 files changed, 0 insertions, 2060 deletions
diff --git a/sound/oss/nec_vrc5477.c b/sound/oss/nec_vrc5477.c deleted file mode 100644 index 27b4ba3aaa7..00000000000 --- a/sound/oss/nec_vrc5477.c +++ /dev/null @@ -1,2060 +0,0 @@ -/*********************************************************************** - * Copyright 2001 MontaVista Software Inc. - * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net - * - * drivers/sound/nec_vrc5477.c - * AC97 sound dirver for NEC Vrc5477 chip (an integrated, - * multi-function controller chip for MIPS CPUs) - * - * VRA support Copyright 2001 Bradley D. LaRonde <brad@ltc.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - *********************************************************************** - */ - -/* - * This code is derived from ite8172.c, which is written by Steve Longerbeam. - * - * Features: - * Currently we only support the following capabilities: - * . mono output to PCM L/R (line out). - * . stereo output to PCM L/R (line out). - * . mono input from PCM L (line in). - * . stereo output from PCM (line in). - * . sampling rate at 48k or variable sampling rate - * . support /dev/dsp, /dev/mixer devices, standard OSS devices. - * . only support 16-bit PCM format (hardware limit, no software - * translation) - * . support duplex, but no trigger or realtime. - * - * Specifically the following are not supported: - * . app-set frag size. - * . mmap'ed buffer access - */ - -/* - * Original comments from ite8172.c file. - */ - -/* - * - * Notes: - * - * 1. Much of the OSS buffer allocation, ioctl's, and mmap'ing are - * taken, slightly modified or not at all, from the ES1371 driver, - * so refer to the credits in es1371.c for those. The rest of the - * code (probe, open, read, write, the ISR, etc.) is new. - * 2. The following support is untested: - * * Memory mapping the audio buffers, and the ioctl controls that go - * with it. - * * S/PDIF output. - * 3. The following is not supported: - * * I2S input. - * * legacy audio mode. - * 4. Support for volume button interrupts is implemented but doesn't - * work yet. - * - * Revision history - * 02.08.2001 0.1 Initial release - */ - -#include <linux/module.h> -#include <linux/string.h> -#include <linux/kernel.h> -#include <linux/ioport.h> -#include <linux/sched.h> -#include <linux/delay.h> -#include <linux/sound.h> -#include <linux/slab.h> -#include <linux/soundcard.h> -#include <linux/pci.h> -#include <linux/init.h> -#include <linux/poll.h> -#include <linux/bitops.h> -#include <linux/proc_fs.h> -#include <linux/spinlock.h> -#include <linux/smp_lock.h> -#include <linux/ac97_codec.h> -#include <linux/mutex.h> - -#include <asm/io.h> -#include <asm/dma.h> -#include <asm/uaccess.h> - -/* -------------------debug macros -------------------------------------- */ -/* #undef VRC5477_AC97_DEBUG */ -#define VRC5477_AC97_DEBUG - -#undef VRC5477_AC97_VERBOSE_DEBUG -/* #define VRC5477_AC97_VERBOSE_DEBUG */ - -#if defined(VRC5477_AC97_VERBOSE_DEBUG) -#define VRC5477_AC97_DEBUG -#endif - -#if defined(VRC5477_AC97_DEBUG) -#define ASSERT(x) if (!(x)) { \ - panic("assertion failed at %s:%d: %s\n", __FILE__, __LINE__, #x); } -#else -#define ASSERT(x) -#endif /* VRC5477_AC97_DEBUG */ - -#if defined(VRC5477_AC97_VERBOSE_DEBUG) -static u16 inTicket; /* check sync between intr & write */ -static u16 outTicket; -#endif - -/* --------------------------------------------------------------------- */ - -#undef OSS_DOCUMENTED_MIXER_SEMANTICS - -static const unsigned sample_shift[] = { 0, 1, 1, 2 }; - -#define VRC5477_INT_CLR 0x0 -#define VRC5477_INT_STATUS 0x0 -#define VRC5477_CODEC_WR 0x4 -#define VRC5477_CODEC_RD 0x8 -#define VRC5477_CTRL 0x18 -#define VRC5477_ACLINK_CTRL 0x1c -#define VRC5477_INT_MASK 0x24 - -#define VRC5477_DAC1_CTRL 0x30 -#define VRC5477_DAC1L 0x34 -#define VRC5477_DAC1_BADDR 0x38 -#define VRC5477_DAC2_CTRL 0x3c -#define VRC5477_DAC2L 0x40 -#define VRC5477_DAC2_BADDR 0x44 -#define VRC5477_DAC3_CTRL 0x48 -#define VRC5477_DAC3L 0x4c -#define VRC5477_DAC3_BADDR 0x50 - -#define VRC5477_ADC1_CTRL 0x54 -#define VRC5477_ADC1L 0x58 -#define VRC5477_ADC1_BADDR 0x5c -#define VRC5477_ADC2_CTRL 0x60 -#define VRC5477_ADC2L 0x64 -#define VRC5477_ADC2_BADDR 0x68 -#define VRC5477_ADC3_CTRL 0x6c -#define VRC5477_ADC3L 0x70 -#define VRC5477_ADC3_BADDR 0x74 - -#define VRC5477_CODEC_WR_RWC (1 << 23) - -#define VRC5477_CODEC_RD_RRDYA (1 << 31) -#define VRC5477_CODEC_RD_RRDYD (1 << 30) - -#define VRC5477_ACLINK_CTRL_RST_ON (1 << 15) -#define VRC5477_ACLINK_CTRL_RST_TIME 0x7f -#define VRC5477_ACLINK_CTRL_SYNC_ON (1 << 30) -#define VRC5477_ACLINK_CTRL_CK_STOP_ON (1 << 31) - -#define VRC5477_CTRL_DAC2ENB (1 << 15) -#define VRC5477_CTRL_ADC2ENB (1 << 14) -#define VRC5477_CTRL_DAC1ENB (1 << 13) -#define VRC5477_CTRL_ADC1ENB (1 << 12) - -#define VRC5477_INT_MASK_NMASK (1 << 31) -#define VRC5477_INT_MASK_DAC1END (1 << 5) -#define VRC5477_INT_MASK_DAC2END (1 << 4) -#define VRC5477_INT_MASK_DAC3END (1 << 3) -#define VRC5477_INT_MASK_ADC1END (1 << 2) -#define VRC5477_INT_MASK_ADC2END (1 << 1) -#define VRC5477_INT_MASK_ADC3END (1 << 0) - -#define VRC5477_DMA_ACTIVATION (1 << 31) -#define VRC5477_DMA_WIP (1 << 30) - - -#define VRC5477_AC97_MODULE_NAME "NEC_Vrc5477_audio" -#define PFX VRC5477_AC97_MODULE_NAME ": " - -/* --------------------------------------------------------------------- */ - -struct vrc5477_ac97_state { - /* list of vrc5477_ac97 devices */ - struct list_head devs; - - /* the corresponding pci_dev structure */ - struct pci_dev *dev; - - /* soundcore stuff */ - int dev_audio; - - /* hardware resources */ - unsigned long io; - unsigned int irq; - -#ifdef VRC5477_AC97_DEBUG - /* debug /proc entry */ - struct proc_dir_entry *ps; - struct proc_dir_entry *ac97_ps; -#endif /* VRC5477_AC97_DEBUG */ - - struct ac97_codec *codec; - - unsigned dacChannels, adcChannels; - unsigned short dacRate, adcRate; - unsigned short extended_status; - - spinlock_t lock; - struct mutex open_mutex; - mode_t open_mode; - wait_queue_head_t open_wait; - - struct dmabuf { - void *lbuf, *rbuf; - dma_addr_t lbufDma, rbufDma; - unsigned bufOrder; - unsigned numFrag; - unsigned fragShift; - unsigned fragSize; /* redundant */ - unsigned fragTotalSize; /* = numFrag * fragSize(real) */ - unsigned nextIn; - unsigned nextOut; - int count; - unsigned error; /* over/underrun */ - wait_queue_head_t wait; - /* OSS stuff */ - unsigned stopped:1; - unsigned ready:1; - } dma_dac, dma_adc; - - #define WORK_BUF_SIZE 2048 - struct { - u16 lchannel; - u16 rchannel; - } workBuf[WORK_BUF_SIZE/4]; -}; - -/* --------------------------------------------------------------------- */ - -static LIST_HEAD(devs); - -/* --------------------------------------------------------------------- */ - -static inline unsigned ld2(unsigned int x) -{ - unsigned r = 0; - - if (x >= 0x10000) { - x >>= 16; - r += 16; - } - if (x >= 0x100) { - x >>= 8; - r += 8; - } - if (x >= 0x10) { - x >>= 4; - r += 4; - } - if (x >= 4) { - x >>= 2; - r += 2; - } - if (x >= 2) - r++; - return r; -} - -/* --------------------------------------------------------------------- */ - -static u16 rdcodec(struct ac97_codec *codec, u8 addr) -{ - struct vrc5477_ac97_state *s = - (struct vrc5477_ac97_state *)codec->private_data; - unsigned long flags; - u32 result; - - spin_lock_irqsave(&s->lock, flags); - - /* wait until we can access codec registers */ - while (inl(s->io + VRC5477_CODEC_WR) & 0x80000000); - - /* write the address and "read" command to codec */ - addr = addr & 0x7f; - outl((addr << 16) | VRC5477_CODEC_WR_RWC, s->io + VRC5477_CODEC_WR); - - /* get the return result */ - udelay(100); /* workaround hardware bug */ - while ( (result = inl(s->io + VRC5477_CODEC_RD)) & - (VRC5477_CODEC_RD_RRDYA | VRC5477_CODEC_RD_RRDYD) ) { - /* we get either addr or data, or both */ - if (result & VRC5477_CODEC_RD_RRDYA) { - ASSERT(addr == ((result >> 16) & 0x7f) ); - } - if (result & VRC5477_CODEC_RD_RRDYD) { - break; - } - } - - spin_unlock_irqrestore(&s->lock, flags); - - return result & 0xffff; -} - - -static void wrcodec(struct ac97_codec *codec, u8 addr, u16 data) -{ - struct vrc5477_ac97_state *s = - (struct vrc5477_ac97_state *)codec->private_data; - unsigned long flags; - - spin_lock_irqsave(&s->lock, flags); - - /* wait until we can access codec registers */ - while (inl(s->io + VRC5477_CODEC_WR) & 0x80000000); - - /* write the address and value to codec */ - outl((addr << 16) | data, s->io + VRC5477_CODEC_WR); - - spin_unlock_irqrestore(&s->lock, flags); -} - - -static void waitcodec(struct ac97_codec *codec) -{ - struct vrc5477_ac97_state *s = - (struct vrc5477_ac97_state *)codec->private_data; - - /* wait until we can access codec registers */ - while (inl(s->io + VRC5477_CODEC_WR) & 0x80000000); -} - -static int ac97_codec_not_present(struct ac97_codec *codec) -{ - struct vrc5477_ac97_state *s = - (struct vrc5477_ac97_state *)codec->private_data; - unsigned long flags; - unsigned short count = 0xffff; - - spin_lock_irqsave(&s->lock, flags); - - /* wait until we can access codec registers */ - do { - if (!(inl(s->io + VRC5477_CODEC_WR) & 0x80000000)) - break; - } while (--count); - - if (count == 0) { - spin_unlock_irqrestore(&s->lock, flags); - return -1; - } - - /* write 0 to reset */ - outl((AC97_RESET << 16) | 0, s->io + VRC5477_CODEC_WR); - - /* test whether we get a response from ac97 chip */ - count = 0xffff; - do { - if (!(inl(s->io + VRC5477_CODEC_WR) & 0x80000000)) - break; - } while (--count); - - if (count == 0) { - spin_unlock_irqrestore(&s->lock, flags); - return -1; - } - spin_unlock_irqrestore(&s->lock, flags); - return 0; -} - -/* --------------------------------------------------------------------- */ - -static void vrc5477_ac97_delay(int msec) -{ - unsigned long tmo; - signed long tmo2; - - if (in_interrupt()) - return; - - tmo = jiffies + (msec*HZ)/1000; - for (;;) { - tmo2 = tmo - jiffies; - if (tmo2 <= 0) - break; - schedule_timeout(tmo2); - } -} - - -static void set_adc_rate(struct vrc5477_ac97_state *s, unsigned rate) -{ - wrcodec(s->codec, AC97_PCM_LR_ADC_RATE, rate); - s->adcRate = rate; -} - - -static void set_dac_rate(struct vrc5477_ac97_state *s, unsigned rate) -{ - if(s->extended_status & AC97_EXTSTAT_VRA) { - wrcodec(s->codec, AC97_PCM_FRONT_DAC_RATE, rate); - s->dacRate = rdcodec(s->codec, AC97_PCM_FRONT_DAC_RATE); - } -} - -static int ac97_codec_not_present(struct ac97_codec *codec) -{ - struct vrc5477_ac97_state *s = - (struct vrc5477_ac97_state *)codec->private_data; - unsigned long flags; - unsigned short count = 0xffff; - - spin_lock_irqsave(&s->lock, flags); - - /* wait until we can access codec registers */ - do { - if (!(inl(s->io + VRC5477_CODEC_WR) & 0x80000000)) - break; - } while (--count); - - if (count == 0) { - spin_unlock_irqrestore(&s->lock, flags); - return -1; - } - - /* write 0 to reset */ - outl((AC97_RESET << 16) | 0, s->io + VRC5477_CODEC_WR); - - /* test whether we get a response from ac97 chip */ - count = 0xffff; - do { - if (!(inl(s->io + VRC5477_CODEC_WR) & 0x80000000)) - break; - } while (--count); - - if (count == 0) { - spin_unlock_irqrestore(&s->lock, flags); - return -1; - } - spin_unlock_irqrestore(&s->lock, flags); - return 0; -} - -/* --------------------------------------------------------------------- */ - -static inline void -stop_dac(struct vrc5477_ac97_state *s) -{ - struct dmabuf* db = &s->dma_dac; - unsigned long flags; - u32 temp; - - spin_lock_irqsave(&s->lock, flags); - - if (db->stopped) { - spin_unlock_irqrestore(&s->lock, flags); - return; - } - - /* deactivate the dma */ - outl(0, s->io + VRC5477_DAC1_CTRL); - outl(0, s->io + VRC5477_DAC2_CTRL); - - /* wait for DAM completely stop */ - while (inl(s->io + VRC5477_DAC1_CTRL) & VRC5477_DMA_WIP); - while (inl(s->io + VRC5477_DAC2_CTRL) & VRC5477_DMA_WIP); - - /* disable dac slots in aclink */ - temp = inl(s->io + VRC5477_CTRL); - temp &= ~ (VRC5477_CTRL_DAC1ENB | VRC5477_CTRL_DAC2ENB); - outl (temp, s->io + VRC5477_CTRL); - - /* disable interrupts */ - temp = inl(s->io + VRC5477_INT_MASK); - temp &= ~ (VRC5477_INT_MASK_DAC1END | VRC5477_INT_MASK_DAC2END); - outl (temp, s->io + VRC5477_INT_MASK); - - /* clear pending ones */ - outl(VRC5477_INT_MASK_DAC1END | VRC5477_INT_MASK_DAC2END, - s->io + VRC5477_INT_CLR); - - db->stopped = 1; - - spin_unlock_irqrestore(&s->lock, flags); -} - -static void start_dac(struct vrc5477_ac97_state *s) -{ - struct dmabuf* db = &s->dma_dac; - unsigned long flags; - u32 dmaLength; - u32 temp; - - spin_lock_irqsave(&s->lock, flags); - - if (!db->stopped) { - spin_unlock_irqrestore(&s->lock, flags); - return; - } - - /* we should have some data to do the DMA trasnfer */ - ASSERT(db->count >= db->fragSize); - - /* clear pending fales interrupts */ - outl(VRC5477_INT_MASK_DAC1END | VRC5477_INT_MASK_DAC2END, - s->io + VRC5477_INT_CLR); - - /* enable interrupts */ - temp = inl(s->io + VRC5477_INT_MASK); - temp |= VRC5477_INT_MASK_DAC1END | VRC5477_INT_MASK_DAC2END; - outl(temp, s->io + VRC5477_INT_MASK); - - /* setup dma base addr */ - outl(db->lbufDma + db->nextOut, s->io + VRC5477_DAC1_BADDR); - if (s->dacChannels == 1) { - outl(db->lbufDma + db->nextOut, s->io + VRC5477_DAC2_BADDR); - } else { - outl(db->rbufDma + db->nextOut, s->io + VRC5477_DAC2_BADDR); - } - - /* set dma length, in the unit of 0x10 bytes */ - dmaLength = db->fragSize >> 4; - outl(dmaLength, s->io + VRC5477_DAC1L); - outl(dmaLength, s->io + VRC5477_DAC2L); - - /* activate dma */ - outl(VRC5477_DMA_ACTIVATION, s->io + VRC5477_DAC1_CTRL); - outl(VRC5477_DMA_ACTIVATION, s->io + VRC5477_DAC2_CTRL); - - /* enable dac slots - we should hear the music now! */ - temp = inl(s->io + VRC5477_CTRL); - temp |= (VRC5477_CTRL_DAC1ENB | VRC5477_CTRL_DAC2ENB); - outl (temp, s->io + VRC5477_CTRL); - - /* it is time to setup next dma transfer */ - ASSERT(inl(s->io + VRC5477_DAC1_CTRL) & VRC5477_DMA_WIP); - ASSERT(inl(s->io + VRC5477_DAC2_CTRL) & VRC5477_DMA_WIP); - - temp = db->nextOut + db->fragSize; - if (temp >= db->fragTotalSize) { - ASSERT(temp == db->fragTotalSize); - temp = 0; - } - - outl(db->lbufDma + temp, s->io + VRC5477_DAC1_BADDR); - if (s->dacChannels == 1) { - outl(db->lbufDma + temp, s->io + VRC5477_DAC2_BADDR); - } else { - outl(db->rbufDma + temp, s->io + VRC5477_DAC2_BADDR); - } - - db->stopped = 0; - -#if defined(VRC5477_AC97_VERBOSE_DEBUG) - outTicket = *(u16*)(db->lbuf+db->nextOut); - if (db->count > db->fragSize) { - ASSERT((u16)(outTicket+1) == *(u16*)(db->lbuf+temp)); - } -#endif - - spin_unlock_irqrestore(&s->lock, flags); -} - -static inline void stop_adc(struct vrc5477_ac97_state *s) -{ - struct dmabuf* db = &s->dma_adc; - unsigned long flags; - u32 temp; - - spin_lock_irqsave(&s->lock, flags); - - if (db->stopped) { - spin_unlock_irqrestore(&s->lock, flags); - return; - } - - /* deactivate the dma */ - outl(0, s->io + VRC5477_ADC1_CTRL); - outl(0, s->io + VRC5477_ADC2_CTRL); - - /* disable adc slots in aclink */ - temp = inl(s->io + VRC5477_CTRL); - temp &= ~ (VRC5477_CTRL_ADC1ENB | VRC5477_CTRL_ADC2ENB); - outl (temp, s->io + VRC5477_CTRL); - - /* disable interrupts */ - temp = inl(s->io + VRC5477_INT_MASK); - temp &= ~ (VRC5477_INT_MASK_ADC1END | VRC5477_INT_MASK_ADC2END); - outl (temp, s->io + VRC5477_INT_MASK); - - /* clear pending ones */ - outl(VRC5477_INT_MASK_ADC1END | VRC5477_INT_MASK_ADC2END, - s->io + VRC5477_INT_CLR); - - db->stopped = 1; - - spin_unlock_irqrestore(&s->lock, flags); -} - -static void start_adc(struct vrc5477_ac97_state *s) -{ - struct dmabuf* db = &s->dma_adc; - unsigned long flags; - u32 dmaLength; - u32 temp; - - spin_lock_irqsave(&s->lock, flags); - - if (!db->stopped) { - spin_unlock_irqrestore(&s->lock, flags); - return; - } - - /* we should at least have some free space in the buffer */ - ASSERT(db->count < db->fragTotalSize - db->fragSize * 2); - - /* clear pending ones */ - outl(VRC5477_INT_MASK_ADC1END | VRC5477_INT_MASK_ADC2END, - s->io + VRC5477_INT_CLR); - - /* enable interrupts */ - temp = inl(s->io + VRC5477_INT_MASK); - temp |= VRC5477_INT_MASK_ADC1END | VRC5477_INT_MASK_ADC2END; - outl(temp, s->io + VRC5477_INT_MASK); - - /* setup dma base addr */ - outl(db->lbufDma + db->nextIn, s->io + VRC5477_ADC1_BADDR); - outl(db->rbufDma + db->nextIn, s->io + VRC5477_ADC2_BADDR); - - /* setup dma length */ - dmaLength = db->fragSize >> 4; - outl(dmaLength, s->io + VRC5477_ADC1L); - outl(dmaLength, s->io + VRC5477_ADC2L); - - /* activate dma */ - outl(VRC5477_DMA_ACTIVATION, s->io + VRC5477_ADC1_CTRL); - outl(VRC5477_DMA_ACTIVATION, s->io + VRC5477_ADC2_CTRL); - - /* enable adc slots */ - temp = inl(s->io + VRC5477_CTRL); - temp |= (VRC5477_CTRL_ADC1ENB | VRC5477_CTRL_ADC2ENB); - outl (temp, s->io + VRC5477_CTRL); - - /* it is time to setup next dma transfer */ - temp = db->nextIn + db->fragSize; - if (temp >= db->fragTotalSize) { - ASSERT(temp == db->fragTotalSize); - temp = 0; - } - outl(db->lbufDma + temp, s->io + VRC5477_ADC1_BADDR); - outl(db->rbufDma + temp, s->io + VRC5477_ADC2_BADDR); - - db->stopped = 0; - - spin_unlock_irqrestore(&s->lock, flags); -} - -/* --------------------------------------------------------------------- */ - -#define DMABUF_DEFAULTORDER (16-PAGE_SHIFT) -#define DMABUF_MINORDER 1 - -static inline void dealloc_dmabuf(struct vrc5477_ac97_state *s, - struct dmabuf *db) -{ - if (db->lbuf) { - ASSERT(db->rbuf); - pci_free_consistent(s->dev, PAGE_SIZE << db->bufOrder, - db->lbuf, db->lbufDma); - pci_free_consistent(s->dev, PAGE_SIZE << db->bufOrder, - db->rbuf, db->rbufDma); - db->lbuf = db->rbuf = NULL; - } - db->nextIn = db->nextOut = 0; - db->ready = 0; -} - -static int prog_dmabuf(struct vrc5477_ac97_state *s, - struct dmabuf *db, - unsigned rate) -{ - int order; - unsigned bufsize; - - if (!db->lbuf) { - ASSERT(!db->rbuf); - - db->ready = 0; - for (order = DMABUF_DEFAULTORDER; - order >= DMABUF_MINORDER; - order--) { - db->lbuf = pci_alloc_consistent(s->dev, - PAGE_SIZE << order, - &db->lbufDma); - db->rbuf = pci_alloc_consistent(s->dev, - PAGE_SIZE << order, - &db->rbufDma); - if (db->lbuf && db->rbuf) break; - if (db->lbuf) { - ASSERT(!db->rbuf); - pci_free_consistent(s->dev, - PAGE_SIZE << order, - db->lbuf, - db->lbufDma); - } - } - if (!db->lbuf) { - ASSERT(!db->rbuf); - return -ENOMEM; - } - - db->bufOrder = order; - } - - db->count = 0; - db->nextIn = db->nextOut = 0; - - bufsize = PAGE_SIZE << db->bufOrder; - db->fragShift = ld2(rate * 2 / 100); - if (db->fragShift < 4) db->fragShift = 4; - - db->numFrag = bufsize >> db->fragShift; - while (db->numFrag < 4 && db->fragShift > 4) { - db->fragShift--; - db->numFrag = bufsize >> db->fragShift; - } - db->fragSize = 1 << db->fragShift; - db->fragTotalSize = db->numFrag << db->fragShift; - memset(db->lbuf, 0, db->fragTotalSize); - memset(db->rbuf, 0, db->fragTotalSize); - - db->ready = 1; - - return 0; -} - -static inline int prog_dmabuf_adc(struct vrc5477_ac97_state *s) -{ - stop_adc(s); - return prog_dmabuf(s, &s->dma_adc, s->adcRate); -} - -static inline int prog_dmabuf_dac(struct vrc5477_ac97_state *s) -{ - stop_dac(s); - return prog_dmabuf(s, &s->dma_dac, s->dacRate); -} - - -/* --------------------------------------------------------------------- */ -/* hold spinlock for the following! */ - -static inline void vrc5477_ac97_adc_interrupt(struct vrc5477_ac97_state *s) -{ - struct dmabuf* adc = &s->dma_adc; - unsigned temp; - - /* we need two frags avaiable because one is already being used - * and the other will be used when next interrupt happens. - */ - if (adc->count >= adc->fragTotalSize - adc->fragSize) { - stop_adc(s); - adc->error++; - printk(KERN_INFO PFX "adc overrun\n"); - return; - } - - /* set the base addr for next DMA transfer */ - temp = adc->nextIn + 2*adc->fragSize; - if (temp >= adc->fragTotalSize) { - ASSERT( (temp == adc->fragTotalSize) || - (temp == adc->fragTotalSize + adc->fragSize) ); - temp -= adc->fragTotalSize; - } - outl(adc->lbufDma + temp, s->io + VRC5477_ADC1_BADDR); - outl(adc->rbufDma + temp, s->io + VRC5477_ADC2_BADDR); - - /* adjust nextIn */ - adc->nextIn += adc->fragSize; - if (adc->nextIn >= adc->fragTotalSize) { - ASSERT(adc->nextIn == adc->fragTotalSize); - adc->nextIn = 0; - } - - /* adjust count */ - adc->count += adc->fragSize; - - /* wake up anybody listening */ - if (waitqueue_active(&adc->wait)) { - wake_up_interruptible(&adc->wait); - } -} - -static inline void vrc5477_ac97_dac_interrupt(struct vrc5477_ac97_state *s) -{ - struct dmabuf* dac = &s->dma_dac; - unsigned temp; - - /* next DMA transfer should already started */ - // ASSERT(inl(s->io + VRC5477_DAC1_CTRL) & VRC5477_DMA_WIP); - // ASSERT(inl(s->io + VRC5477_DAC2_CTRL) & VRC5477_DMA_WIP); - - /* let us set for next next DMA transfer */ - temp = dac->nextOut + dac->fragSize*2; - if (temp >= dac->fragTotalSize) { - ASSERT( (temp == dac->fragTotalSize) || - (temp == dac->fragTotalSize + dac->fragSize) ); - temp -= dac->fragTotalSize; - } - outl(dac->lbufDma + temp, s->io + VRC5477_DAC1_BADDR); - if (s->dacChannels == 1) { - outl(dac->lbufDma + temp, s->io + VRC5477_DAC2_BADDR); - } else { - outl(dac->rbufDma + temp, s->io + VRC5477_DAC2_BADDR); - } - -#if defined(VRC5477_AC97_VERBOSE_DEBUG) - if (*(u16*)(dac->lbuf + dac->nextOut) != outTicket) { - printk("assert fail: - %d vs %d\n", - *(u16*)(dac->lbuf + dac->nextOut), - outTicket); - ASSERT(1 == 0); - } -#endif - - /* adjust nextOut pointer */ - dac->nextOut += dac->fragSize; - if (dac->nextOut >= dac->fragTotalSize) { - ASSERT(dac->nextOut == dac->fragTotalSize); - dac->nextOut = 0; - } - - /* adjust count */ - dac->count -= dac->fragSize; - if (dac->count <=0 ) { - /* buffer under run */ - dac->count = 0; - dac->nextIn = dac->nextOut; - stop_dac(s); - } - -#if defined(VRC5477_AC97_VERBOSE_DEBUG) - if (dac->count) { - outTicket ++; - ASSERT(*(u16*)(dac->lbuf + dac->nextOut) == outTicket); - } -#endif - - /* we cannot have both under run and someone is waiting on us */ - ASSERT(! (waitqueue_active(&dac->wait) && (dac->count <= 0)) ); - - /* wake up anybody listening */ - if (waitqueue_active(&dac->wait)) - wake_up_interruptible(&dac->wait); -} - -static irqreturn_t vrc5477_ac97_interrupt(int irq, void *dev_id) -{ - struct vrc5477_ac97_state *s = (struct vrc5477_ac97_state *)dev_id; - u32 irqStatus; - u32 adcInterrupts, dacInterrupts; - - spin_lock(&s->lock); - - /* get irqStatus and clear the detected ones */ - irqStatus = inl(s->io + VRC5477_INT_STATUS); - outl(irqStatus, s->io + VRC5477_INT_CLR); - - /* let us see what we get */ - dacInterrupts = VRC5477_INT_MASK_DAC1END | VRC5477_INT_MASK_DAC2END; - adcInterrupts = VRC5477_INT_MASK_ADC1END | VRC5477_INT_MASK_ADC2END; - if (irqStatus & dacInterrupts) { - /* we should get both interrupts, but just in case ... */ - if (irqStatus & VRC5477_INT_MASK_DAC1END) { - vrc5477_ac97_dac_interrupt(s); - } - if ( (irqStatus & dacInterrupts) != dacInterrupts ) { - printk(KERN_WARNING "vrc5477_ac97 : dac interrupts not in sync!!!\n"); - stop_dac(s); - start_dac(s); - } - } else if (irqStatus & adcInterrupts) { - /* we should get both interrupts, but just in case ... */ - if(irqStatus & VRC5477_INT_MASK_ADC1END) { - vrc5477_ac97_adc_interrupt(s); - } - if ( (irqStatus & adcInterrupts) != adcInterrupts ) { - printk(KERN_WARNING "vrc5477_ac97 : adc interrupts not in sync!!!\n"); - stop_adc(s); - start_adc(s); - } - } - - spin_unlock(&s->lock); - return IRQ_HANDLED; -} - -/* --------------------------------------------------------------------- */ - -static int vrc5477_ac97_open_mixdev(struct inode *inode, struct file *file) -{ - int minor = iminor(inode); - struct list_head *list; - struct vrc5477_ac97_state *s; - - for (list = devs.next; ; list = list->next) { - if (list == &devs) - return -ENODEV; - s = list_entry(list, struct vrc5477_ac97_state, devs); - if (s->codec->dev_mixer == minor) - break; - } - file->private_data = s; - return nonseekable_open(inode, file); -} - -static int vrc5477_ac97_release_mixdev(struct inode *inode, struct file *file) -{ - return 0; -} - - -static int mixdev_ioctl(struct ac97_codec *codec, unsigned int cmd, - unsigned long arg) -{ - return codec->mixer_ioctl(codec, cmd, arg); -} - -static int vrc5477_ac97_ioctl_mixdev(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg) -{ - struct vrc5477_ac97_state *s = - (struct vrc5477_ac97_state *)file->private_data; - struct ac97_codec *codec = s->codec; - - return mixdev_ioctl(codec, cmd, arg); -} - -static /*const*/ struct file_operations vrc5477_ac97_mixer_fops = { - .owner = THIS_MODULE, - .llseek = no_llseek, - .ioctl = vrc5477_ac97_ioctl_mixdev, - .open = vrc5477_ac97_open_mixdev, - .release = vrc5477_ac97_release_mixdev, -}; - -/* --------------------------------------------------------------------- */ - -static int drain_dac(struct vrc5477_ac97_state *s, int nonblock) -{ - unsigned long flags; - int count, tmo; - - if (!s->dma_dac.ready) - return 0; - - for (;;) { - spin_lock_irqsave(&s->lock, flags); - count = s->dma_dac.count; - spin_unlock_irqrestore(&s->lock, flags); - if (count <= 0) - break; - if (signal_pending(current)) - break; - if (nonblock) - return -EBUSY; - tmo = 1000 * count / s->dacRate / 2; - vrc5477_ac97_delay(tmo); - } - if (signal_pending(current)) - return -ERESTARTSYS; - return 0; -} - -/* --------------------------------------------------------------------- */ - -static inline int -copy_two_channel_adc_to_user(struct vrc5477_ac97_state *s, - char *buffer, - int copyCount) -{ - struct dmabuf *db = &s->dma_adc; - int bufStart = db->nextOut; - for (; copyCount > 0; ) { - int i; - int count = copyCount; - if (count > WORK_BUF_SIZE/2) count = WORK_BUF_SIZE/2; - for (i=0; i< count/2; i++) { - s->workBuf[i].lchannel = - *(u16*)(db->lbuf + bufStart + i*2); - s->workBuf[i].rchannel = - *(u16*)(db->rbuf + bufStart + i*2); - } - if (copy_to_user(buffer, s->workBuf, count*2)) { - return -1; - } - - copyCount -= count; - bufStart += count; - ASSERT(bufStart <= db->fragTotalSize); - buffer += count *2; - } - return 0; -} - -/* return the total bytes that is copied */ -static inline int -copy_adc_to_user(struct vrc5477_ac97_state *s, - char * buffer, - size_t count, - int avail) -{ - struct dmabuf *db = &s->dma_adc; - int copyCount=0; - int copyFragCount=0; - int totalCopyCount = 0; - int totalCopyFragCount = 0; - unsigned long flags; - - /* adjust count to signel channel byte count */ - count >>= s->adcChannels - 1; - - /* we may have to "copy" twice as ring buffer wraps around */ - for (; (avail > 0) && (count > 0); ) { - /* determine max possible copy count for single channel */ - copyCount = count; - if (copyCount > avail) { - copyCount = avail; - } - if (copyCount + db->nextOut > db->fragTotalSize) { - copyCount = db->fragTotalSize - db->nextOut; - ASSERT((copyCount % db->fragSize) == 0); - } - - copyFragCount = (copyCount-1) >> db->fragShift; - copyFragCount = (copyFragCount+1) << db->fragShift; - ASSERT(copyFragCount >= copyCount); - - /* we copy differently based on adc channels */ - if (s->adcChannels == 1) { - if (copy_to_user(buffer, - db->lbuf + db->nextOut, - copyCount)) - return -1; - } else { - /* *sigh* we have to mix two streams into one */ - if (copy_two_channel_adc_to_user(s, buffer, copyCount)) - return -1; - } - - count -= copyCount; - totalCopyCount += copyCount; - avail -= copyFragCount; - totalCopyFragCount += copyFragCount; - - buffer += copyCount << (s->adcChannels-1); - - db->nextOut += copyFragCount; - if (db->nextOut >= db->fragTotalSize) { - ASSERT(db->nextOut == db->fragTotalSize); - db->nextOut = 0; - } - - ASSERT((copyFragCount % db->fragSize) == 0); - ASSERT( (count == 0) || (copyCount == copyFragCount)); - } - - spin_lock_irqsave(&s->lock, flags); - db->count -= totalCopyFragCount; - spin_unlock_irqrestore(&s->lock, flags); - - return totalCopyCount << (s->adcChannels-1); -} - -static ssize_t -vrc5477_ac97_read(struct file *file, - char *buffer, - size_t count, - loff_t *ppos) -{ - struct vrc5477_ac97_state *s = - (struct vrc5477_ac97_state *)file->private_data; - struct dmabuf *db = &s->dma_adc; - ssize_t ret = 0; - unsigned long flags; - int copyCount; - size_t avail; - - if (!access_ok(VERIFY_WRITE, buffer, count)) - return -EFAULT; - - ASSERT(db->ready); - - while (count > 0) { - // wait for samples in capture buffer - do { - spin_lock_irqsave(&s->lock, flags); - if (db->stopped) - start_adc(s); - avail = db->count; - spin_unlock_irqrestore(&s->lock, flags); - if (avail <= 0) { - if (file->f_flags & O_NONBLOCK) { - if (!ret) - ret = -EAGAIN; - return ret; - } - interruptible_sleep_on(&db->wait); - if (signal_pending(current)) { - if (!ret) - ret = -ERESTARTSYS; - return ret; - } - } - } while (avail <= 0); - - ASSERT( (avail % db->fragSize) == 0); - copyCount = copy_adc_to_user(s, buffer, count, avail); - if (copyCount <=0 ) { - if (!ret) ret = -EFAULT; - return ret; - } - - count -= copyCount; - buffer += copyCount; - ret += copyCount; - } // while (count > 0) - - return ret; -} - -static inline int -copy_two_channel_dac_from_user(struct vrc5477_ac97_state *s, - const char *buffer, - int copyCount) -{ - struct dmabuf *db = &s->dma_dac; - int bufStart = db->nextIn; - - ASSERT(db->ready); - - for (; copyCount > 0; ) { - int i; - int count = copyCount; - if (count > WORK_BUF_SIZE/2) count = WORK_BUF_SIZE/2; - if (copy_from_user(s->workBuf, buffer, count*2)) { - return -1; - } - for (i=0; i< count/2; i++) { - *(u16*)(db->lbuf + bufStart + i*2) = - s->workBuf[i].lchannel; - *(u16*)(db->rbuf + bufStart + i*2) = - s->workBuf[i].rchannel; - } - - copyCount -= count; - bufStart += count; - ASSERT(bufStart <= db->fragTotalSize); - buffer += count *2; - } - return 0; - -} - -/* return the total bytes that is copied */ -static inline int -copy_dac_from_user(struct vrc5477_ac97_state *s, - const char *buffer, - size_t count, - int avail) -{ - struct dmabuf *db = &s->dma_dac; - int copyCount=0; - int copyFragCount=0; - int totalCopyCount = 0; - int totalCopyFragCount = 0; - unsigned long flags; -#if defined(VRC5477_AC97_VERBOSE_DEBUG) - int i; -#endif - - /* adjust count to signel channel byte count */ - count >>= s->dacChannels - 1; - - /* we may have to "copy" twice as ring buffer wraps around */ - for (; (avail > 0) && (count > 0); ) { - /* determine max possible copy count for single channel */ - copyCount = count; - if (copyCount > avail) { - copyCount = avail; - } - if (copyCount + db->nextIn > db->fragTotalSize) { - copyCount = db->fragTotalSize - db->nextIn; - ASSERT(copyCount > 0); - } - - copyFragCount = copyCount; - ASSERT(copyFragCount >= copyCount); - - /* we copy differently based on the number channels */ - if (s->dacChannels == 1) { - if (copy_from_user(db->lbuf + db->nextIn, - buffer, - copyCount)) - return -1; - /* fill gaps with 0 */ - memset(db->lbuf + db->nextIn + copyCount, - 0, - copyFragCount - copyCount); - } else { - /* we have demux the stream into two separate ones */ - if (copy_two_channel_dac_from_user(s, buffer, copyCount)) - return -1; - /* fill gaps with 0 */ - memset(db->lbuf + db->nextIn + copyCount, - 0, - copyFragCount - copyCount); - memset(db->rbuf + db->nextIn + copyCount, - 0, - copyFragCount - copyCount); - } - -#if defined(VRC5477_AC97_VERBOSE_DEBUG) - for (i=0; i< copyFragCount; i+= db->fragSize) { - *(u16*)(db->lbuf + db->nextIn + i) = inTicket ++; - } -#endif - - count -= copyCount; - totalCopyCount += copyCount; - avail -= copyFragCount; - totalCopyFragCount += copyFragCount; - - buffer += copyCount << (s->dacChannels - 1); - - db->nextIn += copyFragCount; - if (db->nextIn >= db->fragTotalSize) { - ASSERT(db->nextIn == db->fragTotalSize); - db->nextIn = 0; - } - - ASSERT( (count == 0) || (copyCount == copyFragCount)); - } - - spin_lock_irqsave(&s->lock, flags); - db->count += totalCopyFragCount; - if (db->stopped) { - start_dac(s); - } - - /* nextIn should not be equal to nextOut unless we are full */ - ASSERT( ( (db->count == db->fragTotalSize) && - (db->nextIn == db->nextOut) ) || - ( (db->count < db->fragTotalSize) && - (db->nextIn != db->nextOut) ) ); - - spin_unlock_irqrestore(&s->lock, flags); - - return totalCopyCount << (s->dacChannels-1); - -} - -static ssize_t vrc5477_ac97_write(struct file *file, const char *buffer, - size_t count, loff_t *ppos) -{ - struct vrc5477_ac97_state *s = - (struct vrc5477_ac97_state *)file->private_data; - struct dmabuf *db = &s->dma_dac; - ssize_t ret; - unsigned long flags; - int copyCount, avail; - - if (!access_ok(VERIFY_READ, buffer, count)) - return -EFAULT; - ret = 0; - - while (count > 0) { - // wait for space in playback buffer - do { - spin_lock_irqsave(&s->lock, flags); - avail = db->fragTotalSize - db->count; - spin_unlock_irqrestore(&s->lock, flags); - if (avail <= 0) { - if (file->f_flags & O_NONBLOCK) { - if (!ret) - ret = -EAGAIN; - return ret; - } - interruptible_sleep_on(&db->wait); - if (signal_pending(current)) { - if (!ret) - ret = -ERESTARTSYS; - return ret; - } - } - } while (avail <= 0); - - copyCount = copy_dac_from_user(s, buffer, count, avail); - if (copyCount < 0) { - if (!ret) ret = -EFAULT; - return ret; - } - - count -= copyCount; - buffer += copyCount; - ret += copyCount; - } // while (count > 0) - - return ret; -} - -/* No kernel lock - we have our own spinlock */ -static unsigned int vrc5477_ac97_poll(struct file *file, - struct poll_table_struct *wait) -{ - struct vrc5477_ac97_state *s = (struct vrc5477_ac97_state *)file->private_data; - unsigned long flags; - unsigned int mask = 0; - - if (file->f_mode & FMODE_WRITE) - poll_wait(file, &s->dma_dac.wait, wait); - if (file->f_mode & FMODE_READ) - poll_wait(file, &s->dma_adc.wait, wait); - spin_lock_irqsave(&s->lock, flags); - if (file->f_mode & FMODE_READ) { - if (s->dma_adc.count >= (signed)s->dma_adc.fragSize) - mask |= POLLIN | POLLRDNORM; - } - if (file->f_mode & FMODE_WRITE) { - if ((signed)s->dma_dac.fragTotalSize >= - s->dma_dac.count + (signed)s->dma_dac.fragSize) - mask |= POLLOUT | POLLWRNORM; - } - spin_unlock_irqrestore(&s->lock, flags); - return mask; -} - -#ifdef VRC5477_AC97_DEBUG -static struct ioctl_str_t { - unsigned int cmd; - const char* str; -} ioctl_str[] = { - {SNDCTL_DSP_RESET, "SNDCTL_DSP_RESET"}, - {SNDCTL_DSP_SYNC, "SNDCTL_DSP_SYNC"}, - {SNDCTL_DSP_SPEED, "SNDCTL_DSP_SPEED"}, - {SNDCTL_DSP_STEREO, "SNDCTL_DSP_STEREO"}, - {SNDCTL_DSP_GETBLKSIZE, "SNDCTL_DSP_GETBLKSIZE"}, - {SNDCTL_DSP_SETFMT, "SNDCTL_DSP_SETFMT"}, - {SNDCTL_DSP_SAMPLESIZE, "SNDCTL_DSP_SAMPLESIZE"}, - {SNDCTL_DSP_CHANNELS, "SNDCTL_DSP_CHANNELS"}, - {SOUND_PCM_WRITE_CHANNELS, "SOUND_PCM_WRITE_CHANNELS"}, - {SOUND_PCM_WRITE_FILTER, "SOUND_PCM_WRITE_FILTER"}, - {SNDCTL_DSP_POST, "SNDCTL_DSP_POST"}, - {SNDCTL_DSP_SUBDIVIDE, "SNDCTL_DSP_SUBDIVIDE"}, - {SNDCTL_DSP_SETFRAGMENT, "SNDCTL_DSP_SETFRAGMENT"}, - {SNDCTL_DSP_GETFMTS, "SNDCTL_DSP_GETFMTS"}, - {SNDCTL_DSP_GETOSPACE, "SNDCTL_DSP_GETOSPACE"}, - {SNDCTL_DSP_GETISPACE, "SNDCTL_DSP_GETISPACE"}, - {SNDCTL_DSP_NONBLOCK, "SNDCTL_DSP_NONBLOCK"}, - {SNDCTL_DSP_GETCAPS, "SNDCTL_DSP_GETCAPS"}, - {SNDCTL_DSP_GETTRIGGER, "SNDCTL_DSP_GETTRIGGER"}, - {SNDCTL_DSP_SETTRIGGER, "SNDCTL_DSP_SETTRIGGER"}, - {SNDCTL_DSP_GETIPTR, "SNDCTL_DSP_GETIPTR"}, - {SNDCTL_DSP_GETOPTR, "SNDCTL_DSP_GETOPTR"}, - {SNDCTL_DSP_MAPINBUF, "SNDCTL_DSP_MAPINBUF"}, - {SNDCTL_DSP_MAPOUTBUF, "SNDCTL_DSP_MAPOUTBUF"}, - {SNDCTL_DSP_SETSYNCRO, "SNDCTL_DSP_SETSYNCRO"}, - {SNDCTL_DSP_SETDUPLEX, "SNDCTL_DSP_SETDUPLEX"}, - {SNDCTL_DSP_GETODELAY, "SNDCTL_DSP_GETODELAY"}, - {SNDCTL_DSP_GETCHANNELMASK, "SNDCTL_DSP_GETCHANNELMASK"}, - {SNDCTL_DSP_BIND_CHANNEL, "SNDCTL_DSP_BIND_CHANNEL"}, - {OSS_GETVERSION, "OSS_GETVERSION"}, - {SOUND_PCM_READ_RATE, "SOUND_PCM_READ_RATE"}, - {SOUND_PCM_READ_CHANNELS, "SOUND_PCM_READ_CHANNELS"}, - {SOUND_PCM_READ_BITS, "SOUND_PCM_READ_BITS"}, - {SOUND_PCM_READ_FILTER, "SOUND_PCM_READ_FILTER"} -}; -#endif - -static int vrc5477_ac97_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg) -{ - struct vrc5477_ac97_state *s = (struct vrc5477_ac97_state *)file->private_data; - unsigned long flags; - audio_buf_info abinfo; - int count; - int val, ret; - -#ifdef VRC5477_AC97_DEBUG - for (count = 0; count < ARRAY_SIZE(ioctl_str); count++) { - if (ioctl_str[count].cmd == cmd) - break; - } - if (count < ARRAY_SIZE(ioctl_str)) - printk(KERN_INFO PFX "ioctl %s\n", ioctl_str[count].str); - else - printk(KERN_INFO PFX "ioctl unknown, 0x%x\n", cmd); -#endif - - switch (cmd) { - case OSS_GETVERSION: - return put_user(SOUND_VERSION, (int *)arg); - - case SNDCTL_DSP_SYNC: - if (file->f_mode & FMODE_WRITE) - return drain_dac(s, file->f_flags & O_NONBLOCK); - return 0; - - case SNDCTL_DSP_SETDUPLEX: - return 0; - - case SNDCTL_DSP_GETCAPS: - return put_user(DSP_CAP_DUPLEX, (int *)arg); - - case SNDCTL_DSP_RESET: - if (file->f_mode & FMODE_WRITE) { - stop_dac(s); - synchronize_irq(s->irq); - s->dma_dac.count = 0; - s->dma_dac.nextIn = s->dma_dac.nextOut = 0; - } - if (file->f_mode & FMODE_READ) { - stop_adc(s); - synchronize_irq(s->irq); - s->dma_adc.count = 0; - s->dma_adc.nextIn = s->dma_adc.nextOut = 0; - } - return 0; - - case SNDCTL_DSP_SPEED: - if (get_user(val, (int *)arg)) - return -EFAULT; - if (val >= 0) { - if (file->f_mode & FMODE_READ) { - stop_adc(s); - set_adc_rate(s, val); - if ((ret = prog_dmabuf_adc(s))) - return ret; - } - if (file->f_mode & FMODE_WRITE) { - stop_dac(s); - set_dac_rate(s, val); - if ((ret = prog_dmabuf_dac(s))) - return ret; - } - } - return put_user((file->f_mode & FMODE_READ) ? - s->adcRate : s->dacRate, (int *)arg); - - case SNDCTL_DSP_STEREO: - if (get_user(val, (int *)arg)) - return -EFAULT; - if (file->f_mode & FMODE_READ) { - stop_adc(s); - if (val) - s->adcChannels = 2; - else - s->adcChannels = 1; - if ((ret = prog_dmabuf_adc(s))) - return ret; - } - if (file->f_mode & FMODE_WRITE) { - stop_dac(s); - if (val) - s->dacChannels = 2; - else - s->dacChannels = 1; - if ((ret = prog_dmabuf_dac(s))) - return ret; - } - return 0; - - case SNDCTL_DSP_CHANNELS: - if (get_user(val, (int *)arg)) - return -EFAULT; - if (val != 0) { - if ( (val != 1) && (val != 2)) val = 2; - - if (file->f_mode & FMODE_READ) { - stop_adc(s); - s->dacChannels = val; - if ((ret = prog_dmabuf_adc(s))) - return ret; - } - if (file->f_mode & FMODE_WRITE) { - stop_dac(s); - s->dacChannels = val; - if ((ret = prog_dmabuf_dac(s))) - return ret; - } - } - return put_user(val, (int *)arg); - - case SNDCTL_DSP_GETFMTS: /* Returns a mask */ - return put_user(AFMT_S16_LE, (int *)arg); - - case SNDCTL_DSP_SETFMT: /* Selects ONE fmt*/ - if (get_user(val, (int *)arg)) - return -EFAULT; - if (val != AFMT_QUERY) { - if (val != AFMT_S16_LE) return -EINVAL; - if (file->f_mode & FMODE_READ) { - stop_adc(s); - if ((ret = prog_dmabuf_adc(s))) - return ret; - } - if (file->f_mode & FMODE_WRITE) { - stop_dac(s); - if ((ret = prog_dmabuf_dac(s))) - return ret; - } - } else { - val = AFMT_S16_LE; - } - return put_user(val, (int *)arg); - - case SNDCTL_DSP_POST: - return 0; - - case SNDCTL_DSP_GETTRIGGER: - case SNDCTL_DSP_SETTRIGGER: - /* NO trigger */ - return -EINVAL; - - case SNDCTL_DSP_GETOSPACE: - if (!(file->f_mode & FMODE_WRITE)) - return -EINVAL; - abinfo.fragsize = s->dma_dac.fragSize << (s->dacChannels-1); - spin_lock_irqsave(&s->lock, flags); - count = s->dma_dac.count; - spin_unlock_irqrestore(&s->lock, flags); - abinfo.bytes = (s->dma_dac.fragTotalSize - count) << - (s->dacChannels-1); - abinfo.fragstotal = s->dma_dac.numFrag; - abinfo.fragments = abinfo.bytes >> s->dma_dac.fragShift >> - (s->dacChannels-1); - return copy_to_user((void *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0; - - case SNDCTL_DSP_GETISPACE: - if (!(file->f_mode & FMODE_READ)) - return -EINVAL; - abinfo.fragsize = s->dma_adc.fragSize << (s->adcChannels-1); - spin_lock_irqsave(&s->lock, flags); - count = s->dma_adc.count; - spin_unlock_irqrestore(&s->lock, flags); - if (count < 0) - count = 0; - abinfo.bytes = count << (s->adcChannels-1); - abinfo.fragstotal = s->dma_adc.numFrag; - abinfo.fragments = (abinfo.bytes >> s->dma_adc.fragShift) >> - (s->adcChannels-1); - return copy_to_user((void *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0; - - case SNDCTL_DSP_NONBLOCK: - file->f_flags |= O_NONBLOCK; - return 0; - - case SNDCTL_DSP_GETODELAY: - if (!(file->f_mode & FMODE_WRITE)) - return -EINVAL; - spin_lock_irqsave(&s->lock, flags); - count = s->dma_dac.count; - spin_unlock_irqrestore(&s->lock, flags); - return put_user(count, (int *)arg); - - case SNDCTL_DSP_GETIPTR: - case SNDCTL_DSP_GETOPTR: - /* we cannot get DMA ptr */ - return -EINVAL; - - case SNDCTL_DSP_GETBLKSIZE: - if (file->f_mode & FMODE_WRITE) - return put_user(s->dma_dac.fragSize << (s->dacChannels-1), (int *)arg); - else - return put_user(s->dma_adc.fragSize << (s->adcChannels-1), (int *)arg); - - case SNDCTL_DSP_SETFRAGMENT: - /* we ignore fragment size request */ - return 0; - - case SNDCTL_DSP_SUBDIVIDE: - /* what is this for? [jsun] */ - return 0; - - case SOUND_PCM_READ_RATE: - return put_user((file->f_mode & FMODE_READ) ? - s->adcRate : s->dacRate, (int *)arg); - - case SOUND_PCM_READ_CHANNELS: - if (file->f_mode & FMODE_READ) - return put_user(s->adcChannels, (int *)arg); - else - return put_user(s->dacChannels ? 2 : 1, (int *)arg); - - case SOUND_PCM_READ_BITS: - return put_user(16, (int *)arg); - - case SOUND_PCM_WRITE_FILTER: - case SNDCTL_DSP_SETSYNCRO: - case SOUND_PCM_READ_FILTER: - return -EINVAL; - } - - return mixdev_ioctl(s->codec, cmd, arg); -} - - -static int vrc5477_ac97_open(struct inode *inode, struct file *file) -{ - int minor = iminor(inode); - DECLARE_WAITQUEUE(wait, current); - unsigned long flags; - struct list_head *list; - struct vrc5477_ac97_state *s; - int ret=0; - - nonseekable_open(inode, file); - for (list = devs.next; ; list = list->next) { - if (list == &devs) - return -ENODEV; - s = list_entry(list, struct vrc5477_ac97_state, devs); - if (!((s->dev_audio ^ minor) & ~0xf)) - break; - } - file->private_data = s; - - /* wait for device to become free */ - mutex_lock(&s->open_mutex); - while (s->open_mode & file->f_mode) { - - if (file->f_flags & O_NONBLOCK) { - mutex_unlock(&s->open_mutex); - return -EBUSY; - } - add_wait_queue(&s->open_wait, &wait); - __set_current_state(TASK_INTERRUPTIBLE); - mutex_unlock(&s->open_mutex); - schedule(); - remove_wait_queue(&s->open_wait, &wait); - set_current_state(TASK_RUNNING); - if (signal_pending(current)) - return -ERESTARTSYS; - mutex_lock(&s->open_mutex); - } - - spin_lock_irqsave(&s->lock, flags); - - if (file->f_mode & FMODE_READ) { - /* set default settings */ - set_adc_rate(s, 48000); - s->adcChannels = 2; - - ret = prog_dmabuf_adc(s); - if (ret) goto bailout; - } - if (file->f_mode & FMODE_WRITE) { - /* set default settings */ - set_dac_rate(s, 48000); - s->dacChannels = 2; - - ret = prog_dmabuf_dac(s); - if (ret) goto bailout; - } - - s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE); - - bailout: - spin_unlock_irqrestore(&s->lock, flags); - - mutex_unlock(&s->open_mutex); - return ret; -} - -static int vrc5477_ac97_release(struct inode *inode, struct file *file) -{ - struct vrc5477_ac97_state *s = - (struct vrc5477_ac97_state *)file->private_data; - - lock_kernel(); - if (file->f_mode & FMODE_WRITE) - drain_dac(s, file->f_flags & O_NONBLOCK); - mutex_lock(&s->open_mutex); - if (file->f_mode & FMODE_WRITE) { - stop_dac(s); - dealloc_dmabuf(s, &s->dma_dac); - } - if (file->f_mode & FMODE_READ) { - stop_adc(s); - dealloc_dmabuf(s, &s->dma_adc); - } - s->open_mode &= (~file->f_mode) & (FMODE_READ|FMODE_WRITE); - mutex_unlock(&s->open_mutex); - wake_up(&s->open_wait); - unlock_kernel(); - return 0; -} - -static /*const*/ struct file_operations vrc5477_ac97_audio_fops = { - .owner = THIS_MODULE, - .llseek = no_llseek, - .read = vrc5477_ac97_read, - .write = vrc5477_ac97_write, - .poll = vrc5477_ac97_poll, - .ioctl = vrc5477_ac97_ioctl, - // .mmap = vrc5477_ac97_mmap, - .open = vrc5477_ac97_open, - .release = vrc5477_ac97_release, -}; - - -/* --------------------------------------------------------------------- */ - - -/* --------------------------------------------------------------------- */ - -/* - * for debugging purposes, we'll create a proc device that dumps the - * CODEC chipstate - */ - -#ifdef VRC5477_AC97_DEBUG - -struct { - const char *regname; - unsigned regaddr; -} vrc5477_ac97_regs[] = { - {"VRC5477_INT_STATUS", VRC5477_INT_STATUS}, - {"VRC5477_CODEC_WR", VRC5477_CODEC_WR}, - {"VRC5477_CODEC_RD", VRC5477_CODEC_RD}, - {"VRC5477_CTRL", VRC5477_CTRL}, - {"VRC5477_ACLINK_CTRL", VRC5477_ACLINK_CTRL}, - {"VRC5477_INT_MASK", VRC5477_INT_MASK}, - {"VRC5477_DAC1_CTRL", VRC5477_DAC1_CTRL}, - {"VRC5477_DAC1L", VRC5477_DAC1L}, - {"VRC5477_DAC1_BADDR", VRC5477_DAC1_BADDR}, - {"VRC5477_DAC2_CTRL", VRC5477_DAC2_CTRL}, - {"VRC5477_DAC2L", VRC5477_DAC2L}, - {"VRC5477_DAC2_BADDR", VRC5477_DAC2_BADDR}, - {"VRC5477_DAC3_CTRL", VRC5477_DAC3_CTRL}, - {"VRC5477_DAC3L", VRC5477_DAC3L}, - {"VRC5477_DAC3_BADDR", VRC5477_DAC3_BADDR}, - {"VRC5477_ADC1_CTRL", VRC5477_ADC1_CTRL}, - {"VRC5477_ADC1L", VRC5477_ADC1L}, - {"VRC5477_ADC1_BADDR", VRC5477_ADC1_BADDR}, - {"VRC5477_ADC2_CTRL", VRC5477_ADC2_CTRL}, - {"VRC5477_ADC2L", VRC5477_ADC2L}, - {"VRC5477_ADC2_BADDR", VRC5477_ADC2_BADDR}, - {"VRC5477_ADC3_CTRL", VRC5477_ADC3_CTRL}, - {"VRC5477_ADC3L", VRC5477_ADC3L}, - {"VRC5477_ADC3_BADDR", VRC5477_ADC3_BADDR}, - {NULL, 0x0} -}; - -static int proc_vrc5477_ac97_dump (char *buf, char **start, off_t fpos, - int length, int *eof, void *data) -{ - struct vrc5477_ac97_state *s; - int cnt, len = 0; - - if (list_empty(&devs)) - return 0; - s = list_entry(devs.next, struct vrc5477_ac97_state, devs); - - /* print out header */ - len += sprintf(buf + len, "\n\t\tVrc5477 Audio Debug\n\n"); - - // print out digital controller state - len += sprintf (buf + len, "NEC Vrc5477 Audio Controller registers\n"); - len += sprintf (buf + len, "---------------------------------\n"); - for (cnt=0; vrc5477_ac97_regs[cnt].regname != NULL; cnt++) { - len+= sprintf (buf + len, "%-20s = %08x\n", - vrc5477_ac97_regs[cnt].regname, - inl(s->io + vrc5477_ac97_regs[cnt].regaddr)); - } - - /* print out driver state */ - len += sprintf (buf + len, "NEC Vrc5477 Audio driver states\n"); - len += sprintf (buf + len, "---------------------------------\n"); - len += sprintf (buf + len, "dacChannels = %d\n", s->dacChannels); - len += sprintf (buf + len, "adcChannels = %d\n", s->adcChannels); - len += sprintf (buf + len, "dacRate = %d\n", s->dacRate); - len += sprintf (buf + len, "adcRate = %d\n", s->adcRate); - - len += sprintf (buf + len, "dma_dac is %s ready\n", - s->dma_dac.ready? "" : "not"); - if (s->dma_dac.ready) { - len += sprintf (buf + len, "dma_dac is %s stopped.\n", - s->dma_dac.stopped? "" : "not"); - len += sprintf (buf + len, "dma_dac.fragSize = %x\n", - s->dma_dac.fragSize); - len += sprintf (buf + len, "dma_dac.fragShift = %x\n", - s->dma_dac.fragShift); - len += sprintf (buf + len, "dma_dac.numFrag = %x\n", - s->dma_dac.numFrag); - len += sprintf (buf + len, "dma_dac.fragTotalSize = %x\n", - s->dma_dac.fragTotalSize); - len += sprintf (buf + len, "dma_dac.nextIn = %x\n", - s->dma_dac.nextIn); - len += sprintf (buf + len, "dma_dac.nextOut = %x\n", - s->dma_dac.nextOut); - len += sprintf (buf + len, "dma_dac.count = %x\n", - s->dma_dac.count); - } - - len += sprintf (buf + len, "dma_adc is %s ready\n", - s->dma_adc.ready? "" : "not"); - if (s->dma_adc.ready) { - len += sprintf (buf + len, "dma_adc is %s stopped.\n", - s->dma_adc.stopped? "" : "not"); - len += sprintf (buf + len, "dma_adc.fragSize = %x\n", - s->dma_adc.fragSize); - len += sprintf (buf + len, "dma_adc.fragShift = %x\n", - s->dma_adc.fragShift); - len += sprintf (buf + len, "dma_adc.numFrag = %x\n", - s->dma_adc.numFrag); - len += sprintf (buf + len, "dma_adc.fragTotalSize = %x\n", - s->dma_adc.fragTotalSize); - len += sprintf (buf + len, "dma_adc.nextIn = %x\n", - s->dma_adc.nextIn); - len += sprintf (buf + len, "dma_adc.nextOut = %x\n", - s->dma_adc.nextOut); - len += sprintf (buf + len, "dma_adc.count = %x\n", - s->dma_adc.count); - } - - /* print out CODEC state */ - len += sprintf (buf + len, "\nAC97 CODEC registers\n"); - len += sprintf (buf + len, "----------------------\n"); - for (cnt=0; cnt <= 0x7e; cnt = cnt +2) - len+= sprintf (buf + len, "reg %02x = %04x\n", - cnt, rdcodec(s->codec, cnt)); - - if (fpos >=len){ - *start = buf; - *eof =1; - return 0; - } - *start = buf + fpos; - if ((len -= fpos) > length) - return length; - *eof =1; - return len; - -} -#endif /* VRC5477_AC97_DEBUG */ - -/* --------------------------------------------------------------------- */ - -/* maximum number of devices; only used for command line params */ -#define NR_DEVICE 5 - -static unsigned int devindex; - -MODULE_AUTHOR("Monta Vista Software, jsun@mvista.com or jsun@junsun.net"); -MODULE_DESCRIPTION("NEC Vrc5477 audio (AC97) Driver"); -MODULE_LICENSE("GPL"); - -static int __devinit vrc5477_ac97_probe(struct pci_dev *pcidev, - const struct pci_device_id *pciid) -{ - struct vrc5477_ac97_state *s; -#ifdef VRC5477_AC97_DEBUG - char proc_str[80]; -#endif - - if (pcidev->irq == 0) - return -1; - - if (!(s = kzalloc(sizeof(struct vrc5477_ac97_state), GFP_KERNEL))) { - printk(KERN_ERR PFX "alloc of device struct failed\n"); - return -1; - } - - init_waitqueue_head(&s->dma_adc.wait); - init_waitqueue_head(&s->dma_dac.wait); - init_waitqueue_head(&s->open_wait); - mutex_init(&s->open_mutex); - spin_lock_init(&s->lock); - - s->dev = pcidev; - s->io = pci_resource_start(pcidev, 0); - s->irq = pcidev->irq; - - s->codec = ac97_alloc_codec(); - - s->codec->private_data = s; - s->codec->id = 0; - s->codec->codec_read = rdcodec; - s->codec->codec_write = wrcodec; - s->codec->codec_wait = waitcodec; - - /* setting some other default values such as - * adcChannels, adcRate is done in open() so that - * no persistent state across file opens. - */ - - /* test if get response from ac97, if not return */ - if (ac97_codec_not_present(s->codec)) { - printk(KERN_ERR PFX "no ac97 codec\n"); - goto err_region; - - } - - /* test if get response from ac97, if not return */ - if (ac97_codec_not_present(&(s->codec))) { - printk(KERN_ERR PFX "no ac97 codec\n"); - goto err_region; - - } - - if (!request_region(s->io, pci_resource_len(pcidev,0), - VRC5477_AC97_MODULE_NAME)) { - printk(KERN_ERR PFX "io ports %#lx->%#lx in use\n", - s->io, s->io + pci_resource_len(pcidev,0)-1); - goto err_region; - } - if (request_irq(s->irq, vrc5477_ac97_interrupt, IRQF_DISABLED, - VRC5477_AC97_MODULE_NAME, s)) { - printk(KERN_ERR PFX "irq %u in use\n", s->irq); - goto err_irq; - } - - printk(KERN_INFO PFX "IO at %#lx, IRQ %d\n", s->io, s->irq); - - /* register devices */ - if ((s->dev_audio = register_sound_dsp(&vrc5477_ac97_audio_fops, -1)) < 0) - goto err_dev1; - if ((s->codec->dev_mixer = - register_sound_mixer(&vrc5477_ac97_mixer_fops, -1)) < 0) - goto err_dev2; - -#ifdef VRC5477_AC97_DEBUG - /* initialize the debug proc device */ - s->ps = create_proc_read_entry(VRC5477_AC97_MODULE_NAME, 0, NULL, - proc_vrc5477_ac97_dump, NULL); -#endif /* VRC5477_AC97_DEBUG */ - - /* enable pci io and bus mastering */ - if (pci_enable_device(pcidev)) - goto err_dev3; - pci_set_master(pcidev); - - /* cold reset the AC97 */ - outl(VRC5477_ACLINK_CTRL_RST_ON | VRC5477_ACLINK_CTRL_RST_TIME, - s->io + VRC5477_ACLINK_CTRL); - while (inl(s->io + VRC5477_ACLINK_CTRL) & VRC5477_ACLINK_CTRL_RST_ON); - - /* codec init */ - if (!ac97_probe_codec(s->codec)) - goto err_dev3; - -#ifdef VRC5477_AC97_DEBUG - sprintf(proc_str, "driver/%s/%d/ac97", - VRC5477_AC97_MODULE_NAME, s->codec->id); - s->ac97_ps = create_proc_read_entry (proc_str, 0, NULL, - ac97_read_proc, s->codec); - /* TODO : why this proc file does not show up? */ -#endif - - /* Try to enable variable rate audio mode. */ - wrcodec(s->codec, AC97_EXTENDED_STATUS, - rdcodec(s->codec, AC97_EXTENDED_STATUS) | AC97_EXTSTAT_VRA); - /* Did we enable it? */ - if(rdcodec(s->codec, AC97_EXTENDED_STATUS) & AC97_EXTSTAT_VRA) - s->extended_status |= AC97_EXTSTAT_VRA; - else { - s->dacRate = 48000; - printk(KERN_INFO PFX "VRA mode not enabled; rate fixed at %d.", - s->dacRate); - } - - /* let us get the default volumne louder */ - wrcodec(s->codec, 0x2, 0x1010); /* master volume, middle */ - wrcodec(s->codec, 0xc, 0x10); /* phone volume, middle */ - // wrcodec(s->codec, 0xe, 0x10); /* misc volume, middle */ - wrcodec(s->codec, 0x10, 0x8000); /* line-in 2 line-out disable */ - wrcodec(s->codec, 0x18, 0x0707); /* PCM out (line out) middle */ - - - /* by default we select line in the input */ - wrcodec(s->codec, 0x1a, 0x0404); - wrcodec(s->codec, 0x1c, 0x0f0f); - wrcodec(s->codec, 0x1e, 0x07); - - /* enable the master interrupt but disable all others */ - outl(VRC5477_INT_MASK_NMASK, s->io + VRC5477_INT_MASK); - - /* store it in the driver field */ - pci_set_drvdata(pcidev, s); - pcidev->dma_mask = 0xffffffff; - /* put it into driver list */ - list_add_tail(&s->devs, &devs); - /* increment devindex */ - if (devindex < NR_DEVICE-1) - devindex++; - return 0; - - err_dev3: - unregister_sound_mixer(s->codec->dev_mixer); - err_dev2: - unregister_sound_dsp(s->dev_audio); - err_dev1: - printk(KERN_ERR PFX "cannot register misc device\n"); - free_irq(s->irq, s); - err_irq: - release_region(s->io, pci_resource_len(pcidev,0)); - err_region: - ac97_release_codec(codec); - kfree(s); - return -1; -} - -static void __devexit vrc5477_ac97_remove(struct pci_dev *dev) -{ - struct vrc5477_ac97_state *s = pci_get_drvdata(dev); - - if (!s) - return; - list_del(&s->devs); - -#ifdef VRC5477_AC97_DEBUG - if (s->ps) - remove_proc_entry(VRC5477_AC97_MODULE_NAME, NULL); -#endif /* VRC5477_AC97_DEBUG */ - - synchronize_irq(); - free_irq(s->irq, s); - release_region(s->io, pci_resource_len(dev,0)); - unregister_sound_dsp(s->dev_audio); - unregister_sound_mixer(s->codec->dev_mixer); - ac97_release_codec(s->codec); - kfree(s); - pci_set_drvdata(dev, NULL); -} - - -static struct pci_device_id id_table[] = { - { PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_VRC5477_AC97, - PCI_ANY_ID, PCI_ANY_ID, 0, 0 }, - { 0, } -}; - -MODULE_DEVICE_TABLE(pci, id_table); - -static struct pci_driver vrc5477_ac97_driver = { - .name = VRC5477_AC97_MODULE_NAME, - .id_table = id_table, - .probe = vrc5477_ac97_probe, - .remove = __devexit_p(vrc5477_ac97_remove) -}; - -static int __init init_vrc5477_ac97(void) -{ - printk("Vrc5477 AC97 driver: version v0.2 time " __TIME__ " " __DATE__ " by Jun Sun\n"); - return pci_register_driver(&vrc5477_ac97_driver); -} - -static void __exit cleanup_vrc5477_ac97(void) -{ - printk(KERN_INFO PFX "unloading\n"); - pci_unregister_driver(&vrc5477_ac97_driver); -} - -module_init(init_vrc5477_ac97); -module_exit(cleanup_vrc5477_ac97); - |