/* Copyright (c) 1998-2003 VIA Technologies, Inc. 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, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * Version: 2.66 * * Supported devices:(VT3074/VT3068) for kernel 2.4.x 2.6.x * The program is implemented for VIA Audio Devices: VT686/686A/686B/8231/8233/8235. * * Revision history * Mar/2003 Original version 2.0 * Apr/2/2003 Add SCMS function: SNDCTL_DSP_GETSCMS & SNDCTL_DSP_SETSCMS * (version change to 2.01). * Apr/24/2003 ADD Smart5.1 function: SOUND_MIXER_3DSE * (version change to 2.1). * May/22/2003 Modify memory and Smart 5.1 function, Change original settings values, Add license note * (version change to 2.11). * May/27/2003 F01 Add AC3 Function, modify SPDIF. * (version change to 2.12) * Jun/6/2003 F02 Fixed MultiChannel issue. * (version change to 2.13) * Jun/15/2003 F03 Fixed full-duplex issue. * Jun/23/2003 Add SPSR & CD2SP function: SNDCTL_DSP_SPSR & SNDCTL_DSP_CD2SP * (version change to 2.20) * Jul/8/2003 F04 Fixed some issues: * 1.A garbage sound (bo bo!) before start and after stop playing * 2. Volume with VT1616A. * 3. Surround sound issue while set 2 speaker. * (version change to 2.21) * Jun/18/2003 Add EAPD function. (version change to 2.22). * Aug/20/2003 Fixed SPDIF issues(LinDVD). (version change to 2.3). * Sep/19/2003 Support Suse8.2/Suse9.1(64bit) for K8T800, Fixed SPDIF issue of VT1617 Codec. * (version chage to 2.41) * Apr/26/2004 Add SPDIF API control. (version change to 2.42) * Jul/1/2004 Add mixer control for 6 channel. (version change to 2.43) * Support kernel 2.4 & 2.6. (version change to 2.60) * Jul/27/2005 Fixed poll_wait , lock whan play games(function "via_dsp_poll). (version change to 2.66) * Sep/9/2005 Fixed the function "pci_register_driver" return code for kernel 2.6.11 & 2.4.x */ #define VIA_VERSION 0x020606 /* version: 2.66 */ #include #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) #include #endif #include #include #include #include #include #include #include #include #include #include #include #include "soundcard.h" #include "ac97_codec.h" #include #include //#include #include #include #include #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) #include #else #include #endif #include #include "viaudio_regop.h" /* user volume 0x4c4c, correspondingly ac97 code reigster 0x0707 */ /* 0x4c4c --> 0x0707 0x4a4a --> 0x0808 */ #define DEFAULT_USER_AC97_VOLUME 0x4a4a #define VIA_SUPPORT_MMAP #define assert(expr) \ if(!(expr)) { \ printk( "Assertion failed! %s,%s,%s,line=%d\n", \ #expr,__FILE__,__FUNCTION__,__LINE__); \ } #define VIA_MODULE_NAME "viaudio" #define PFX VIA_MODULE_NAME ": " #define VIA_PCM_FMT_STEREO (1<<4) /* PCM stereo format if set */ #define VIA_PCM_FMT_16BIT (1<<5) /* PCM 16-bit format if set */ #define VIA_MAX_BUFFER_DMA_PAGES 32 /* size of DMA buffers */ /* buffering default values in ms */ #define VIA_DEFAULT_BUFFER_TIME 500 #define VIA_DEFAULT_FRAG_TIME 20 #define VIA_MAX_FRAG_SIZE PAGE_SIZE #define VIA_MIN_FRAG_SIZE 1024 #define VIA_MIN_FRAG_NUMBER 2 #define VIA_MAX_FRAG_NUMBER 128 #ifndef AC97_PCM_LR_ADC_RATE #define AC97_PCM_LR_ADC_RATE AC97_PCM_LR_DAC_RATE #endif /* capabilities */ #ifdef VIA_SUPPORT_MMAP #define VIA_DSP_CAP (DSP_CAP_REVISION | DSP_CAP_DUPLEX | DSP_CAP_MMAP | \ DSP_CAP_TRIGGER | DSP_CAP_REALTIME) #else #define VIA_DSP_CAP (DSP_CAP_REVISION | DSP_CAP_DUPLEX | \ DSP_CAP_TRIGGER | DSP_CAP_REALTIME) #endif #define SNDCTL_DSP_GETSCMS _SIOR ('P',20, int) #define SNDCTL_GET_EAPD _SIOR ('P',21, int) #define SNDCTL_DRIVER_VERSION _SIOR('P', 22, int) #define SNDCTL_DSP_SETSCMS _SIOWR('P',20, int) #define SNDCTL_DSP_SPSR _SIOWR('P',21, int) #define SNDCTL_DSP_CD2SP _SIOWR('P',22, int) #define SNDCTL_SET_EAPD _SIOWR('P',23, int) #define SNDCTL_SET_SPDIF _SIOWR('P',24, int) #define SPDIF 0x04 #define AC3 0x02 static int spdif_out=0; MODULE_PARM(spdif_out,"i"); /* scatter-gather DMA table entry*/ struct via_sgd_table { u32 addr; u32 count; }; enum via_channel_states { sgd_stopped = 0, sgd_in_progress = 1, }; struct via_buffer_pgtbl { dma_addr_t handle; void *cpuaddr; }; struct via_channel { atomic_t n_frags; atomic_t hw_ptr; wait_queue_head_t wait; unsigned int sw_ptr; unsigned int slop_len; unsigned int n_irqs; int bytes; unsigned is_active : 1; unsigned is_record : 1; unsigned is_3D : 1; unsigned is_mapped : 1; unsigned is_enabled : 1; u8 pcm_fmt; unsigned rate; unsigned int frag_size; unsigned int frag_number; volatile struct via_sgd_table *sgtable; dma_addr_t sgt_handle; unsigned int page_number; struct via_buffer_pgtbl pgtbl[VIA_MAX_BUFFER_DMA_PAGES]; long iobase; const char *name; }; /* data stored for each chip */ struct via_info { struct pci_dev *pdev; long baseaddr; struct ac97_codec ac97; spinlock_t lock; int card_num; /* unique card number, from 0 */ int dev_dsp; // unsigned rev_h : 1; unsigned using3D : 1; int locked_rate : 1; struct semaphore syscall_sem; struct semaphore open_sem; mode_t open_mode; wait_queue_head_t open_wait; struct via_channel ch_in; struct via_channel ch_out; struct via_channel ch_fm; struct via_channel ch_3D; u8 n_channels; int Ext_Capability; int Ext_Function; }; /* number of cards, used for assigning unique numbers to cards */ static unsigned via_num_cards = 0; static unsigned via_IsVT3074 = 0; /**************************************************************** * * prototypes * * */ static int via_init_one (struct pci_dev *dev, const struct pci_device_id *id); static void via_remove_one (struct pci_dev *pdev); static ssize_t via_dsp_read(struct file *file, char *buffer, size_t count, loff_t *ppos); static ssize_t via_dsp_write(struct file *file, const char *buffer, size_t count, loff_t *ppos); static unsigned int via_dsp_poll(struct file *file, poll_table *wait); static int via_dsp_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg); static int via_dsp_open (struct inode *inode, struct file *file); static int via_dsp_release(struct inode *inode, struct file *file); static int via_dsp_mmap(struct file *file, struct vm_area_struct *vma); static u16 via_ac97_read_reg (struct ac97_codec *codec, u8 reg); static void via_ac97_write_reg (struct ac97_codec *codec, u8 reg, u16 value); static u8 via_ac97_wait_idle (struct via_info *card); static void via_chan_free (struct via_info *card, struct via_channel *chan); static void via_chan_clear (struct via_info *card, struct via_channel *chan); static void via_chan_buffer_free (struct via_info *card, struct via_channel *chan); static void via_set_spdif_valid(struct via_info *card, int valid); /**************************************************************** * * Various data the driver needs * * */ static struct pci_device_id via_pci_tbl[] __initdata = { { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5, PCI_ANY_ID, PCI_ANY_ID,0,0,0 }, { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_5, PCI_ANY_ID, PCI_ANY_ID,0,0,1 }, { 0, } }; MODULE_DEVICE_TABLE(pci,via_pci_tbl); static struct pci_driver via_driver = { name: VIA_MODULE_NAME, id_table: via_pci_tbl, probe: via_init_one, remove: via_remove_one, }; static void via_set_spdif_valid(struct via_info *card, int valid) { u16 tmp16; /* firstly, temporarily disable SPDIF */ tmp16 = via_ac97_read_reg(&card->ac97, AC97_EXTENDED_STATUS ); via_ac97_write_reg(&card->ac97, AC97_EXTENDED_STATUS, ((tmp16 & ~SPDIF ) | 1) ); /* Before sending PCM/AC3 data, makes the SPDIF valid */ tmp16 = via_ac97_read_reg(&card->ac97, AC97_RESERVED_3A ); if(valid) tmp16 &= ~0x8000; else tmp16 |= 0x8000; via_ac97_write_reg (&card->ac97, AC97_RESERVED_3A, tmp16 ); /* enable SPDIF */ tmp16 = via_ac97_read_reg(&card->ac97, AC97_EXTENDED_STATUS ); via_ac97_write_reg(&card->ac97, AC97_EXTENDED_STATUS, (tmp16 | 1 | SPDIF) ); } /** * via_syscall_down - down the card-specific syscell semaphore * @card: Private info for specified board * @nonblock: boolean, non-zero if O_NONBLOCK is set * * Returns zero for success. */ static inline int via_syscall_down (struct via_info *card, int nonblock) { nonblock = 0; if (nonblock) { if (down_trylock (&card->syscall_sem)) return -EAGAIN; } else { if (down_interruptible (&card->syscall_sem)) return -ERESTARTSYS; } return 0; } /** * via_stop_everything - Stop all audio operations * * Stops all DMA operations and interrupts, and clear * any pending status bits resulting from those operations. */ static void via_stop_everything (struct via_info *card) { struct via_channel *tmpChan; DPRINTK ("ENTER\n"); assert (card != NULL); if(via_IsVT3074) tmpChan = &card->ch_3D; else tmpChan = &card->ch_fm; /* * terminate any existing operations on audio read/write channels */ via_chan_stop (card->ch_out.iobase); via_chan_stop (card->ch_in.iobase); via_chan_stop (tmpChan->iobase); /* * clear any existing stops / flags (sanity check mainly) */ via_chan_status_clear (card->ch_out.iobase); via_chan_status_clear (card->ch_in.iobase); via_chan_status_clear (tmpChan->iobase); /* * clear any enabled interrupt bits */ clearInterBit(card->ch_out.iobase); clearInterBit(card->ch_in.iobase); clearInterBit(tmpChan->iobase); udelay(10); /* * clear any existing flags */ via_chan_status_clear (card->ch_out.iobase); via_chan_status_clear (card->ch_in.iobase); via_chan_status_clear (tmpChan->iobase); DPRINTK ("EXIT\n"); } /** * via_set_rate - Set PCM sample rate for given channel * @ac97: Pointer to generic codec info struct * @chan: Private info for specified channel * @rate: Desired PCM sample rate, in Khz (4000KHZ to 48000KHZ) */ static int via_set_rate (struct ac97_codec *ac97, struct via_channel *chan, unsigned rate) { struct via_info *card = ac97->private_data; int rate_reg; DPRINTK ("ENTER, rate = %d\n", rate); if (chan->rate == rate) goto out; if (card->locked_rate) { chan->rate = 48000; goto out; } if (rate > 48000) rate = 48000; if (rate < 4000) rate = 4000; rate_reg = chan->is_record ? AC97_PCM_LR_ADC_RATE : AC97_PCM_FRONT_DAC_RATE; via_ac97_write_reg (ac97, AC97_POWER_CONTROL, (via_ac97_read_reg (ac97, AC97_POWER_CONTROL) & ~0x0200) | 0x0200); if(chan->is_record){ via_ac97_write_reg (ac97, 0x32, rate); via_ac97_write_reg (ac97, 0x34, rate); } else{ via_ac97_write_reg (ac97, 0x2c, rate); via_ac97_write_reg (ac97, 0x2e, rate); via_ac97_write_reg (ac97, 0x30, rate); } // via_ac97_write_reg (ac97, rate_reg, rate); via_ac97_write_reg (ac97, AC97_POWER_CONTROL, via_ac97_read_reg (ac97, AC97_POWER_CONTROL) & ~0x0200); udelay (10); chan->rate = via_ac97_read_reg (ac97, rate_reg); if (chan->rate == 0) { card->locked_rate = 1; chan->rate = 48000; printk (KERN_WARNING PFX "Codec rate locked at 48Khz\n"); } out: DPRINTK ("EXIT, returning rate %d Hz\n", chan->rate); return chan->rate; } /**************************************************************** * Channel-specific operations */ /* via_chan_init_defaults - Initialize a struct via_channel */ static void via_chan_init_defaults (struct via_info *card, struct via_channel *chan) { memset (chan, 0, sizeof (*chan)); if (chan == &card->ch_out) { chan->name = "PCM-OUT"; chan->iobase = getChanIobase(card->baseaddr, 0 ); } else if (chan == &card->ch_in) { chan->name = "PCM-IN"; chan->iobase = getChanIobase(card->baseaddr, 1 ); chan->is_record = 1; } else if (chan == &card->ch_3D) { chan->name = "PCM-3D"; chan->iobase = getChanIobase(card->baseaddr, 2 );; chan->is_3D = 1; } else if (chan == &card->ch_fm) { chan->name = "PCM-OUT-FM"; chan->iobase = getChanIobase(card->baseaddr, 3 );; }else { //BUG(); } init_waitqueue_head (&chan->wait); chan->pcm_fmt = getdefaultPcmFmtMask(); chan->is_enabled = 1; chan->frag_number = 0; chan->frag_size = 0; atomic_set (&chan->n_frags, 0); atomic_set (&chan->hw_ptr, 0); } /* via_chan_init - Initialize PCM channel */ static void via_chan_init (struct via_info *card, struct via_channel *chan) { DPRINTK ("ENTER\n"); via_chan_init_defaults (card, chan); /* stop any existing channel output */ via_chan_clear (card, chan); via_chan_status_clear (chan->iobase); chan->pcm_fmt = via_chan_pcm_fmt (chan->iobase, chan->pcm_fmt, 1 , chan->is_record, chan->is_3D); DPRINTK ("EXIT\n"); } /** * via_chan_buffer_init - Initialize PCM channel buffer * Performs some of the preparations necessary to begin a PCM channel. * allocating the scatter-gather DMA table and buffers, * passing the address of the DMA table to the hardware. */ static int via_chan_buffer_init (struct via_info *card, struct via_channel *chan) { int page, offset; int i; if (chan->sgtable != NULL) { return 0; } /* alloc DMA-able memory for scatter-gather table */ chan->sgtable = pci_alloc_consistent (card->pdev, (sizeof (struct via_sgd_table) * chan->frag_number), &chan->sgt_handle); if (!chan->sgtable) { printk (KERN_ERR PFX "DMA table alloc fail, aborting\n"); DPRINTK ("EXIT\n"); return -ENOMEM; } memset ((void*)chan->sgtable, 0, (sizeof (struct via_sgd_table) * chan->frag_number)); /* alloc DMA-able memory for scatter-gather buffers */ chan->page_number = (chan->frag_number * chan->frag_size) / PAGE_SIZE + (((chan->frag_number * chan->frag_size) % PAGE_SIZE) ? 1 : 0); for (i = 0; i < chan->page_number; i++) { chan->pgtbl[i].cpuaddr = pci_alloc_consistent (card->pdev, PAGE_SIZE, &chan->pgtbl[i].handle); if (!chan->pgtbl[i].cpuaddr) { chan->page_number = i; goto err_out_nomem; } DPRINTK ("dmabuf_pg #%d (h=%lx, v2p=%lx, a=%p)\n", i, (long)chan->pgtbl[i].handle, virt_to_phys(chan->pgtbl[i].cpuaddr), chan->pgtbl[i].cpuaddr); } for (i = 0; i < chan->frag_number; i++) { page = i / (PAGE_SIZE / chan->frag_size); offset = (i % (PAGE_SIZE / chan->frag_size)) * chan->frag_size; chan->sgtable[i].count = setSGDflag (chan->frag_size ,2); chan->sgtable[i].addr = cpu_to_le32 (chan->pgtbl[page].handle + offset); DPRINTK ("dmabuf #%d (32(h)=%lx)\n", i, (long)chan->sgtable[i].addr); } /* overwrite the last buffer information */ chan->sgtable[chan->frag_number - 1].count = setSGDflag (chan->frag_size, 1); /* set location of DMA-able scatter-gather info table */ DPRINTK ("outl (0x%X, 0x%04lX)\n", (unsigned int)chan->sgt_handle, getPcmTableAddr(chan->iobase)); via_ac97_wait_idle (card); outl (chan->sgt_handle, getPcmTableAddr(chan->iobase)); udelay (20); via_ac97_wait_idle (card); DPRINTK ("inl (0x%lX) = 0x%X\n", getPcmTableAddr(chan->iobase), inl(getPcmTableAddr(chan->iobase))); DPRINTK ("EXIT\n"); return 0; err_out_nomem: printk (KERN_ERR PFX "DMA buffer alloc fail, aborting\n"); via_chan_buffer_free (card, chan); DPRINTK ("EXIT\n"); return -ENOMEM; } /** * via_chan_free - Release a PCM channel * Performs all the functions necessary to clean up an initialized channel. */ static void via_chan_free (struct via_info *card, struct via_channel *chan) { DPRINTK ("ENTER\n"); spin_lock_irq (&card->lock); /* stop any existing channel output */ via_chan_status_clear (chan->iobase); via_chan_stop (chan->iobase); via_chan_status_clear (chan->iobase); spin_unlock_irq (&card->lock); synchronize_irq(); DPRINTK ("EXIT\n"); } static void via_chan_buffer_free (struct via_info *card, struct via_channel *chan) { int i; DPRINTK ("ENTER\n"); /* zero location of DMA-able scatter-gather info table */ via_ac97_wait_idle(card); outl (0, getPcmTableAddr(chan->iobase)); for (i = 0; i < chan->page_number; i++) if (chan->pgtbl[i].cpuaddr) { pci_free_consistent (card->pdev, PAGE_SIZE, chan->pgtbl[i].cpuaddr, chan->pgtbl[i].handle); chan->pgtbl[i].cpuaddr = NULL; chan->pgtbl[i].handle = 0; } chan->page_number = 0; if (chan->sgtable) { pci_free_consistent (card->pdev, (sizeof (struct via_sgd_table) * chan->frag_number), (void*)chan->sgtable, chan->sgt_handle); chan->sgtable = NULL; } DPRINTK ("EXIT\n"); } /* via_chan_clear - Stop DMA channel operation, and reset pointers */ static void via_chan_clear (struct via_info *card, struct via_channel *chan) { DPRINTK ("ENTER\n"); via_chan_stop (chan->iobase); via_chan_buffer_free(card, chan); chan->is_active = 0; chan->is_mapped = 0; chan->is_enabled = 1; chan->slop_len = 0; chan->sw_ptr = 0; chan->n_irqs = 0; atomic_set (&chan->hw_ptr, 0); DPRINTK ("EXIT\n"); } /** * via_chan_set_speed - Set PCM sample rate for given channel * @val: New sample rate, in Khz * This function halts all audio operations for the given channel */ static int via_chan_set_speed (struct via_info *card, struct via_channel *chan, int val) { DPRINTK ("ENTER, requested rate = %d\n", val); via_chan_clear (card, chan); val = via_set_rate (&card->ac97, chan, val); DPRINTK ("EXIT, returning %d\n", val); return val; } /** * via_chan_set_chans - Set the number of channels for 3D channel * @val: the number of channels */ static int via_chan_set_chans(struct via_info *card, struct via_channel *chan, int val) { DPRINTK ("ENTER\n"); if((val < 1) || (val > 6)) { DPRINTK ("EXIT, with the wrong number of channels\n"); return -EINVAL; } via_chan_clear (card, chan); if(chan->is_3D) { card->n_channels = val; Init3DChannel(chan->iobase, val); } DPRINTK ("EXIT\n"); return val; } /** * via_chan_set_fmt - Set PCM sample size for given channel * @val: New sample size, use the %AFMT_xxx constants * This function halts all audio operations for the given channel * chan, and then calls via_chan_pcm_fmt to set the audio hardware * to the new sample size, either 8-bit or 16-bit. */ static int via_chan_set_fmt (struct via_info *card, struct via_channel *chan, int val) { DPRINTK ("ENTER, val=%s\n", val == AFMT_U8 ? "AFMT_U8" : val == AFMT_S16_LE ? "AFMT_S16_LE" : "unknown"); via_chan_clear (card, chan); assert (val != AFMT_QUERY); /* this case is handled elsewhere */ switch (val) { case AFMT_AC3: case AFMT_S16_LE: if ((chan->pcm_fmt & VIA_PCM_FMT_16BIT) == 0) { chan->pcm_fmt |= VIA_PCM_FMT_16BIT; chan->pcm_fmt = via_chan_pcm_fmt (chan->iobase, chan->pcm_fmt, 0 , chan->is_record, chan->is_3D); } break; case AFMT_U8: if (chan->pcm_fmt & VIA_PCM_FMT_16BIT) { chan->pcm_fmt &= ~VIA_PCM_FMT_16BIT; chan->pcm_fmt = via_chan_pcm_fmt (chan->iobase, chan->pcm_fmt, 0 , chan->is_record, chan->is_3D); } break; default: DPRINTK ("unknown AFMT: 0x%X\n", val); val = AFMT_S16_LE; } DPRINTK ("EXIT\n"); return val; } /** * via_chan_set_stereo - Enable or disable stereo for a DMA channel * @val: New sample size, use the %AFMT_xxx constants */ static int via_chan_set_stereo (struct via_info *card, struct via_channel *chan, int val) { DPRINTK ("ENTER, channels = %d\n", val); via_chan_clear (card, chan); switch (val) { /* mono */ case 1: chan->pcm_fmt &= ~VIA_PCM_FMT_STEREO; chan->pcm_fmt = via_chan_pcm_fmt (chan->iobase, chan->pcm_fmt, 0 , chan->is_record, chan->is_3D); break; /* stereo */ case 2: chan->pcm_fmt |= VIA_PCM_FMT_STEREO; chan->pcm_fmt = via_chan_pcm_fmt (chan->iobase, chan->pcm_fmt, 0 , chan->is_record, chan->is_3D); break; /* unknown */ default: printk (KERN_WARNING PFX "unknown number of channels\n"); val = -EINVAL; break; } DPRINTK ("EXIT, returning %d\n", val); return val; } static int via_chan_set_buffering (struct via_info *card, struct via_channel *chan, int val) { int shift; /* in both cases the buffer cannot be changed */ if (chan->is_active || chan->is_mapped) { return -EINVAL; } if (val < 0) { if (chan->frag_size && chan->frag_number) goto out; DPRINTK ("\n"); chan->frag_size = (VIA_DEFAULT_FRAG_TIME * chan->rate * ((chan->pcm_fmt & VIA_PCM_FMT_STEREO) ? 2 : 1) * ((chan->pcm_fmt & VIA_PCM_FMT_16BIT) ? 2 : 1)) / 1000 - 1; shift = 0; while (chan->frag_size) { chan->frag_size >>= 1; shift++; } chan->frag_size = 1 << shift; chan->frag_number = (VIA_DEFAULT_BUFFER_TIME / VIA_DEFAULT_FRAG_TIME); DPRINTK ("setting default values %d %d\n", chan->frag_size, chan->frag_number); } else { chan->frag_size = 1 << (val & 0xFFFF); chan->frag_number = (val >> 16) & 0xFFFF; DPRINTK ("using user values %d %d\n", chan->frag_size, chan->frag_number); } /* quake3 wants frag_number to be a power of two */ shift = 0; while (chan->frag_number) { chan->frag_number >>= 1; shift++; } chan->frag_number = 1 << shift; if (chan->frag_size > VIA_MAX_FRAG_SIZE) chan->frag_size = VIA_MAX_FRAG_SIZE; else if (chan->frag_size < VIA_MIN_FRAG_SIZE) chan->frag_size = VIA_MIN_FRAG_SIZE; if ((chan->frag_number * chan->frag_size) / PAGE_SIZE > VIA_MAX_BUFFER_DMA_PAGES) chan->frag_number = (VIA_MAX_BUFFER_DMA_PAGES * PAGE_SIZE) / chan->frag_size; if (chan->frag_number < VIA_MIN_FRAG_NUMBER) chan->frag_number = VIA_MIN_FRAG_NUMBER; if (chan->frag_number > VIA_MAX_FRAG_NUMBER) chan->frag_number = VIA_MAX_FRAG_NUMBER; DPRINTK ("using values %d %d\n", chan->frag_size, chan->frag_number); out: if (chan->is_record) atomic_set (&chan->n_frags, 0); else atomic_set (&chan->n_frags, chan->frag_number); // DPRINTK ("EXIT\n"); return 0; } /** * via_chan_flush_frag - Flush partially-full playback buffer to hardware * @chan: Channel whose DMA table will be displayed * * Flushes partially-full playback buffer to hardware. */ static void via_chan_flush_frag (struct via_channel *chan) { DPRINTK ("ENTER\n"); assert (chan->slop_len > 0); if (chan->sw_ptr == (chan->frag_number - 1)) chan->sw_ptr = 0; else chan->sw_ptr++; chan->slop_len = 0; assert (atomic_read (&chan->n_frags) > 0); atomic_dec (&chan->n_frags); DPRINTK ("EXIT\n"); } /** * via_chan_maybe_start - Initiate audio hardware DMA operation * * Initiate DMA operation, if the DMA engine for the given * channel @chan is not already active. */ static inline void via_chan_maybe_start (struct via_channel *chan) { DPRINTK("is_actvie: %d, sg_acttive: %d is_enable %d\n", chan->is_active,sg_active(chan->iobase),chan->is_enabled); // assert (chan->is_active == sg_active(chan->iobase)); if (!chan->is_active && chan->is_enabled) { chan->is_active = 1; sg_begin (chan->iobase); DPRINTK ("starting channel %s\n", chan->name); } } /**************************************************************** * * Interface to ac97-codec module */ /** * via_ac97_wait_idle - Wait until AC97 codec is not busy * @card: Private info for specified board * * Sleep until the AC97 codec is no longer busy. * Returns the final value read from the SGD register being polled. */ static u8 via_ac97_wait_idle (struct via_info *card) { DPRINTK ("ENTER/EXIT\n"); assert (card != NULL); assert (card->pdev != NULL); return via_ac97_busy(card->baseaddr); } /** * via_ac97_read_reg - Read AC97 standard register * @codec: Pointer to generic AC97 codec info * @reg: Index of AC97 register to be read * Returns the 16-bit value stored in the specified * register. */ static u16 via_ac97_read_reg (struct ac97_codec *codec, u8 reg) { struct via_info *card; assert (codec != NULL); assert (codec->private_data != NULL); card = codec->private_data; return via_ac97_read_reg_ex(card->baseaddr, reg); } /** * via_ac97_write_reg - Write AC97 standard register * @codec: Pointer to generic AC97 codec info * @reg: Index of AC97 register to be written * @value: Value to be written to AC97 register */ static void via_ac97_write_reg (struct ac97_codec *codec, u8 reg, u16 value) { struct via_info *card; DPRINTK ("ENTER\n"); assert (codec != NULL); assert (codec->private_data != NULL); card = codec->private_data; via_ac97_write_reg_ex(card->baseaddr, reg, value); DPRINTK ("EXIT\n"); } static int via_mixer_open (struct inode *inode, struct file *file) { int minor = MINOR(inode->i_rdev); struct via_info *card; struct pci_dev *pdev; struct pci_driver *drvr; DPRINTK ("ENTER\n"); pdev = NULL; minor = MINOR(inode->i_rdev); #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) pci_for_each_dev(pdev) { #else while((pdev = pci_find_device(PCI_ANY_ID,PCI_ANY_ID,pdev)) !=NULL){ #endif drvr = pci_dev_driver (pdev); if (drvr == &via_driver) { assert (pci_get_drvdata (pdev) != NULL); card = pci_get_drvdata (pdev); if (card->ac97.dev_mixer == minor) goto match; } } DPRINTK ("EXIT, returning -ENODEV\n"); return -ENODEV; match: file->private_data = &card->ac97; DPRINTK ("EXIT, returning 0\n"); return 0; } static int via_mixer_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { struct ac97_codec *codec = file->private_data; struct via_info *card; int nonblock = (file->f_flags & O_NONBLOCK); int rc; DPRINTK ("ENTER\n"); assert (codec != NULL); card = codec->private_data; assert (card != NULL); rc = via_syscall_down (card, nonblock); if (rc) goto out; rc = codec->mixer_ioctl(codec, cmd, arg); // F04 S if(cmd == SOUND_MIXER_WRITE_VOLUME){ codec->mixer_ioctl(codec, SOUND_MIXER_WRITE_ALTPCM, arg); } // F04 E up (&card->syscall_sem); out: DPRINTK ("EXIT, returning %d\n", rc); return rc; } static loff_t via_llseek(struct file *file, loff_t offset, int origin) { DPRINTK ("ENTER\n"); DPRINTK("EXIT, returning -ESPIPE\n"); return -ESPIPE; } static struct file_operations via_mixer_fops = { owner: THIS_MODULE, open: via_mixer_open, llseek: via_llseek, ioctl: via_mixer_ioctl, }; static int __init via_ac97_reset (struct via_info *card) { struct pci_dev *pdev = card->pdev; u16 tmp16; DPRINTK ("ENTER\n"); assert (pdev != NULL); via_ac97_reset_ex(); if(via_IsVT3074 == 0 ){ /* route FM trap to IRQ, disable FM trap */ pci_write_config_byte (pdev, 0x48, 0x05); udelay(10); /* disable all codec GPI interrupts */ outl (0, pci_resource_start (pdev, 0) + 0x8C); } /* enable variable rate */ tmp16 = via_ac97_read_reg (&card->ac97, AC97_EXTENDED_STATUS); if ((tmp16 & 1) == 0) via_ac97_write_reg (&card->ac97, AC97_EXTENDED_STATUS, tmp16 | 1); DPRINTK ("EXIT, returning 0\n"); return 0; } static void via_ac97_codec_wait (struct ac97_codec *codec) { assert (codec->private_data != NULL); via_ac97_wait_idle (codec->private_data); } static int __init via_ac97_init (struct via_info *card) { int rc; u16 tmp16; unsigned int ExtReg; mm_segment_t fs; int val; DPRINTK ("ENTER\n"); assert (card != NULL); memset (&card->ac97, 0, sizeof (card->ac97)); card->ac97.private_data = card; card->ac97.codec_read = via_ac97_read_reg; card->ac97.codec_write = via_ac97_write_reg; card->ac97.codec_wait = via_ac97_codec_wait; card->ac97.dev_mixer = register_sound_mixer (&via_mixer_fops, -1); if (card->ac97.dev_mixer < 0) { printk (KERN_ERR PFX "unable to register AC97 mixer, aborting\n"); DPRINTK ("EXIT, returning -EIO\n"); return -EIO; } rc = via_ac97_reset (card); if (rc) { printk (KERN_ERR PFX "unable to reset AC97 codec, aborting\n"); goto err_out; } if (ac97_probe_codec (&card->ac97) == 0) { printk (KERN_ERR PFX "unable to probe AC97 codec, aborting\n"); rc = -EIO; goto err_out; } /* enable variable rate */ tmp16 = via_ac97_read_reg (&card->ac97, AC97_EXTENDED_STATUS); via_ac97_write_reg (&card->ac97, AC97_EXTENDED_STATUS, tmp16 | 1); /* * If we cannot enable VRA, we have a locked-rate codec. * We try again to enable VRA before assuming so, however. */ tmp16 = via_ac97_read_reg (&card->ac97, AC97_EXTENDED_STATUS); if ((tmp16 & 1) == 0) { via_ac97_write_reg (&card->ac97, AC97_EXTENDED_STATUS, tmp16 | 1); tmp16 = via_ac97_read_reg (&card->ac97, AC97_EXTENDED_STATUS); if ((tmp16 & 1) == 0) { card->locked_rate = 1; printk (KERN_WARNING PFX "Codec rate locked at 48Khz\n"); } } /* check SPDIF */ ExtReg = via_ac97_read_reg(&card->ac97, AC97_EXTENDED_ID ); card->Ext_Capability = 0 ; card->Ext_Function = 0 ; if(ExtReg & SPDIF) { card->Ext_Capability |= SPDIF ; card->Ext_Capability |= AC3 ; } /* firstly, disable SPDIF in Reg2A */ if(tmp16 & SPDIF){ card->Ext_Function &= ~SPDIF ; via_ac97_write_reg(&card->ac97, AC97_EXTENDED_STATUS, ((tmp16 & ~SPDIF ) | 1) ); } if((spdif_out == 1 ) && (ExtReg & SPDIF)) { /* clear valid bit in Reg3A */ tmp16 = via_ac97_read_reg(&card->ac97, AC97_RESERVED_3A ); via_ac97_write_reg (&card->ac97, AC97_RESERVED_3A, tmp16 | 0x8000); tmp16 = via_ac97_read_reg(&card->ac97, AC97_EXTENDED_STATUS ); via_ac97_write_reg(&card->ac97, AC97_EXTENDED_STATUS, (tmp16 | 1 | SPDIF |0x8000) &(~0x0030) ); card->Ext_Function |= SPDIF ; printk(KERN_INFO "via_ac97_init: Turn on SPDIF:spdif=%x,ExtReg=%x \n", spdif_out,ExtReg); } else printk(KERN_INFO "via_ac97_init: ExtReg=%x \n", ExtReg); /* * try to enable multichannels */ if(via_IsVT3074) { if(ExtReg & 0x01C0) { tmp16 = via_ac97_read_reg(&card->ac97, AC97_EXTENDED_STATUS); via_ac97_write_reg (&card->ac97, AC97_EXTENDED_STATUS, tmp16 & ~0xF800); via_ac97_write_reg( &card->ac97, AC97_CENTER_LFE_MASTER, 0x0808 ); via_ac97_write_reg( &card->ac97, AC97_SURROUND_MASTER, 0x0808); /* Test Control Register For VT1616 */ via_ac97_write_reg( &card->ac97, 0x5A, 0x0230); ExtReg = via_ac97_read_reg(&card->ac97, AC97_EXTENDED_STATUS); DPRINTK ("ExtStatus == %X\n", ExtReg); } } via_special_function(card->baseaddr); // F04 /* initialize the volume */ fs = get_fs(); set_fs(KERNEL_DS); val = SOUND_MASK_MIC; card->ac97.mixer_ioctl(&card->ac97, SOUND_MIXER_WRITE_RECSRC, (unsigned long)&val); val= DEFAULT_USER_AC97_VOLUME; card->ac97.mixer_ioctl(&card->ac97, SOUND_MIXER_WRITE_RECLEV, (unsigned long)&val); card->ac97.mixer_ioctl(&card->ac97, SOUND_MIXER_WRITE_VOLUME, (unsigned long)&val); card->ac97.mixer_ioctl(&card->ac97, SOUND_MIXER_WRITE_PCM, (unsigned long)&val); card->ac97.mixer_ioctl(&card->ac97, SOUND_MIXER_WRITE_MIC, (unsigned long)&val); card->ac97.mixer_ioctl(&card->ac97, SOUND_MIXER_WRITE_LINE1, (unsigned long)&val); card->ac97.mixer_ioctl(&card->ac97, SOUND_MIXER_WRITE_CD, (unsigned long)&val); card->ac97.mixer_ioctl(&card->ac97, SOUND_MIXER_WRITE_LINE, (unsigned long)&val); card->ac97.mixer_ioctl(&card->ac97, SOUND_MIXER_WRITE_SYNTH,(unsigned long)&val); card->ac97.mixer_ioctl(&card->ac97, SOUND_MIXER_WRITE_LINE2, (unsigned long)&val); set_fs(fs); DPRINTK ("EXIT, returning 0\n"); return 0; err_out: unregister_sound_mixer (card->ac97.dev_mixer); DPRINTK ("EXIT, returning %d\n", rc); return rc; } static void via_ac97_cleanup (struct via_info *card) { DPRINTK ("ENTER\n"); assert (card != NULL); assert (card->ac97.dev_mixer >= 0); unregister_sound_mixer (card->ac97.dev_mixer); DPRINTK ("EXIT\n"); } /**************************************************************** * Interrupt-related code */ /** * via_intr_channel - handle an interrupt for a single channel * @chan: handle interrupt for this channel * * Locking: inside card->lock */ static void via_intr_channel (struct via_channel *chan) { int n; if( getInterStatus(chan->iobase) == 0 ) return; if (!chan->sgtable) /* XXX: temporary solution */ return; /* grab current h/w ptr value */ n = atomic_read (&chan->hw_ptr); assert (n >= 0); assert (n < chan->frag_number); /* reset SGD data structure in memory to reflect a full buffer, * and advance the h/w ptr, wrapping around to zero if needed */ if (n == (chan->frag_number - 1)) { chan->sgtable[n].count = setSGDflag(chan->frag_size, 1); atomic_set (&chan->hw_ptr, 0); } else { chan->sgtable[n].count = setSGDflag(chan->frag_size, 2); atomic_inc (&chan->hw_ptr); } chan->n_irqs++; chan->bytes += chan->frag_size; if (chan->bytes < 0) /* handle overflow of 31-bit value */ chan->bytes = chan->frag_size; /* wake up anyone listening to see when interrupts occur */ if (waitqueue_active (&chan->wait)) wake_up_all (&chan->wait); if (chan->is_mapped) return; if (atomic_read (&chan->n_frags) < chan->frag_number) atomic_inc (&chan->n_frags); assert (atomic_read (&chan->n_frags) <= chan->frag_number); if (atomic_read (&chan->n_frags) == chan->frag_number) { chan->is_active = 0; via_chan_pause (chan->iobase); } DPRINTK ("%s intr, channel n_frags == %d\n", chan->name, atomic_read (&chan->n_frags)); } #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) static void via_interrupt(int irq, void *dev_id, struct pt_regs *regs) #else static irqreturn_t via_interrupt(int irq, void *dev_id, struct pt_regs *regs) #endif { struct via_info *card = dev_id; int Intsource ; DPRINTK("interrupt , enter\n"); Intsource = getInterruptSource(card->baseaddr); if( Intsource == 0 ) #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) return; #else return IRQ_HANDLED; #endif spin_lock (&card->lock); /* Intsource 1 : playback, 2: recording , 3: 3D*/ if( Intsource == 1 ){ via_intr_channel (&card->ch_out); /* F01 S */ if((spdif_out == 1) && (card->Ext_Function & SPDIF) && (card->ch_out.is_active == 0 )){ if(!(card->Ext_Function & AC3)) via_set_spdif_valid(card, 0); } /* F01 E */ } else if(Intsource == 2 ) via_intr_channel (&card->ch_in); else if( Intsource == 3 ){ via_intr_channel (&card->ch_3D); /* F01 S */ if((spdif_out == 1) && (card->Ext_Function & SPDIF) && (card->ch_3D.is_active == 0 )){ if(!(card->Ext_Function & AC3)) via_set_spdif_valid(card, 0); } /* F01 E */ } else if( Intsource == 4 ) via_intr_channel (&card->ch_fm); spin_unlock (&card->lock); DPRINTK("interrupt, exit\n"); #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) return; #else return IRQ_HANDLED; #endif } static int via_interrupt_init (struct via_info *card) { DPRINTK ("ENTER\n"); assert (card != NULL); assert (card->pdev != NULL); /* check for sane IRQ number. can this ever happen? */ if (card->pdev->irq < 2) { printk (KERN_ERR PFX "insane IRQ %d, aborting\n", card->pdev->irq); DPRINTK ("EXIT, returning -EIO\n"); return -EIO; } if(via_IsVT3074 == 0 ) via_SetFmTrapToNMI(); if (request_irq (card->pdev->irq, via_interrupt, SA_SHIRQ, VIA_MODULE_NAME, card)) { printk (KERN_ERR PFX "unable to obtain IRQ %d, aborting\n", card->pdev->irq); DPRINTK ("EXIT, returning -EBUSY\n"); return -EBUSY; } DPRINTK ("EXIT, returning 0\n"); return 0; } /**************************************************************** * * OSS DSP device * */ static struct file_operations via_dsp_fops = { owner: THIS_MODULE, open: via_dsp_open, release: via_dsp_release, read: via_dsp_read, write: via_dsp_write, poll: via_dsp_poll, llseek: via_llseek, ioctl: via_dsp_ioctl, mmap: via_dsp_mmap, }; static int __init via_dsp_init (struct via_info *card) { DPRINTK ("ENTER\n"); assert (card != NULL); if(via_IsVT3074 == 0){ /* turn off legacy features */ via_turnoff_fm_sb(); } via_stop_everything (card); card->dev_dsp = register_sound_dsp (&via_dsp_fops, -1); if (card->dev_dsp < 0) { DPRINTK ("EXIT, returning -ENODEV\n"); return -ENODEV; } DPRINTK ("EXIT, returning 0\n"); return 0; } static void via_dsp_cleanup (struct via_info *card) { DPRINTK ("ENTER\n"); assert (card != NULL); assert (card->dev_dsp >= 0); via_stop_everything (card); unregister_sound_dsp (card->dev_dsp); DPRINTK ("EXIT\n"); } #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) static struct page * via_mm_nopage (struct vm_area_struct * vma, unsigned long address, int write_access) #else static struct page * via_mm_nopage (struct vm_area_struct * vma, unsigned long address, int *write_access) #endif { struct via_info *card = vma->vm_private_data; struct via_channel *chan; struct page *dmapage; unsigned long pgoff; unsigned long max_bufs; int rd, wr; DPRINTK ("ENTER, start %lXh, ofs %lXh, pgoff %ld, addr %lXh\n", vma->vm_start, address - vma->vm_start, (address - vma->vm_start) >> PAGE_SHIFT, address ); if (address > vma->vm_end) { DPRINTK ("EXIT, returning NOPAGE_SIGBUS\n"); return NOPAGE_SIGBUS; /* Disallow mremap */ } if (!card) { DPRINTK ("EXIT, returning NOPAGE_OOM\n"); return NOPAGE_OOM; /* Nothing allocated */ } if(card->using3D) chan = &card->ch_3D; else chan = &card->ch_out; pgoff = vma->vm_pgoff + ((address - vma->vm_start) >> PAGE_SHIFT); rd = card->ch_in.is_mapped; wr = chan->is_mapped; max_bufs = chan->frag_number; if (rd && wr) max_bufs *= 2; /* via_dsp_mmap() should ensure this */ assert (pgoff < max_bufs); /* if full-duplex (read+write) and we have two sets of bufs, * then the playback buffers come first, sez soundcard.c */ if (pgoff >= chan->page_number) { pgoff -= chan->page_number; chan = &card->ch_in; } else if (!wr) chan = &card->ch_in; assert ((((unsigned long)chan->pgtbl[pgoff].cpuaddr) % PAGE_SIZE) == 0); dmapage = virt_to_page (chan->pgtbl[pgoff].cpuaddr); DPRINTK ("EXIT, returning page %p for cpuaddr %lXh\n", dmapage, (unsigned long) chan->pgtbl[pgoff].cpuaddr); get_page (dmapage); #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) if(write_access) *write_access = VM_FAULT_MINOR; #endif return dmapage; } #ifndef VM_RESERVED static int via_mm_swapout (struct page *page, struct file *filp) { return 0; } #endif /* VM_RESERVED */ struct vm_operations_struct via_mm_ops = { nopage: via_mm_nopage, #ifndef VM_RESERVED swapout: via_mm_swapout, #endif }; static int via_dsp_mmap(struct file *file, struct vm_area_struct *vma) { struct via_info *card; int nonblock = (file->f_flags & O_NONBLOCK); int rc = -EINVAL, rd=0, wr=0; unsigned long max_size, size, start, offset; assert (file != NULL); assert (vma != NULL); card = file->private_data; assert (card != NULL); DPRINTK ("ENTER, start %lXh, size %ld, pgoff %ld\n", vma->vm_start, vma->vm_end - vma->vm_start, vma->vm_pgoff); max_size = 0; if (vma->vm_flags & VM_READ) { rd = 1; via_chan_set_buffering(card, &card->ch_in, -1); via_chan_buffer_init (card, &card->ch_in); max_size += card->ch_in.page_number << PAGE_SHIFT; } if (vma->vm_flags & VM_WRITE) { wr = 1; if(card->using3D){ via_chan_set_buffering(card, &card->ch_3D, -1); via_chan_buffer_init (card, &card->ch_3D); max_size += card->ch_3D.page_number << PAGE_SHIFT; } else { via_chan_set_buffering(card, &card->ch_out, -1); via_chan_buffer_init (card, &card->ch_out); max_size += card->ch_out.page_number << PAGE_SHIFT; } } start = vma->vm_start; offset = (vma->vm_pgoff << PAGE_SHIFT); size = vma->vm_end - vma->vm_start; /* some basic size/offset sanity checks */ if (size > max_size) goto out; if (offset > max_size - size) goto out; rc = via_syscall_down (card, nonblock); if (rc) goto out; vma->vm_ops = &via_mm_ops; vma->vm_private_data = card; #ifdef VM_RESERVED vma->vm_flags |= VM_RESERVED; #endif if (rd) card->ch_in.is_mapped = 1; if (wr && card->using3D) card->ch_3D.is_mapped = 1; if (wr && !card->using3D) card->ch_out.is_mapped = 1; up (&card->syscall_sem); rc = 0; out: DPRINTK ("EXIT, returning %d\n", rc); return rc; } static ssize_t via_dsp_do_read (struct via_info *card, char *userbuf, size_t count, int nonblock) { DECLARE_WAITQUEUE(wait, current); const char *orig_userbuf = userbuf; struct via_channel *chan = &card->ch_in; size_t size; int n, tmp; ssize_t ret = 0; /* if SGD has not yet been started, start it */ via_chan_maybe_start (chan); handle_one_block: #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) if (current->need_resched) #else if(need_resched()) #endif { up(&card->syscall_sem); schedule (); ret = via_syscall_down (card, nonblock); if (ret) goto out; } /* grab current channel software pointer. In the case of * recording, this is pointing to the next buffer that * will receive data from the audio hardware. */ n = chan->sw_ptr; add_wait_queue(&chan->wait, &wait); for (;;) { __set_current_state(TASK_INTERRUPTIBLE); tmp = atomic_read (&chan->n_frags); assert (tmp >= 0); assert (tmp <= chan->frag_number); if (tmp) break; if (nonblock || !chan->is_active) { ret = -EAGAIN; break; } up(&card->syscall_sem); DPRINTK ("Sleeping on block %d\n", n); schedule(); ret = via_syscall_down (card, nonblock); if (ret) break; if (signal_pending (current)) { ret = -ERESTARTSYS; break; } } set_current_state(TASK_RUNNING); remove_wait_queue(&chan->wait, &wait); if (ret) goto out; /* Now that we have a buffer we can read from, send * as much as sample data possible to userspace. */ while ((count > 0) && (chan->slop_len < chan->frag_size)) { size_t slop_left = chan->frag_size - chan->slop_len; void *base = chan->pgtbl[n / (PAGE_SIZE / chan->frag_size)].cpuaddr; unsigned ofs = n % (PAGE_SIZE / chan->frag_size)*chan->frag_size; size = (count < slop_left) ? count : slop_left; if (copy_to_user (userbuf, base + ofs + chan->slop_len, size)) { ret = -EFAULT; goto out; } count -= size; chan->slop_len += size; userbuf += size; } if (chan->slop_len < chan->frag_size) goto out; if (chan->sw_ptr == (chan->frag_number - 1)) chan->sw_ptr = 0; else chan->sw_ptr++; /* mark one less buffer waiting to be processed */ assert (atomic_read (&chan->n_frags) > 0); atomic_dec (&chan->n_frags); /* we are at a block boundary, there is no fragment data */ chan->slop_len = 0; DPRINTK ("Flushed block %u, sw_ptr now %u, n_frags now %d\n", n, chan->sw_ptr, atomic_read (&chan->n_frags)); if (count > 0) goto handle_one_block; out: return (userbuf != orig_userbuf) ? (userbuf - orig_userbuf) : ret; } static ssize_t via_dsp_read(struct file *file, char *buffer, size_t count, loff_t *ppos) { struct via_info *card; int nonblock = (file->f_flags & O_NONBLOCK); int rc; DPRINTK ("ENTER, file=%p, buffer=%p, count=%u, ppos=%lu\n", file, buffer, (unsigned int)count, ppos ? ((unsigned long)*ppos) : 0); assert (file != NULL); assert (buffer != NULL); card = file->private_data; assert (card != NULL); /* if (ppos != &file->f_pos) { DPRINTK ("EXIT, returning -ESPIPE\n"); return -ESPIPE; } */ rc = via_syscall_down (card, nonblock); if (rc) goto out; if (card->ch_in.is_mapped) { rc = -ENXIO; goto out_up; } via_chan_set_buffering(card, &card->ch_in, -1); rc = via_chan_buffer_init (card, &card->ch_in); if (rc) goto out_up; rc = via_dsp_do_read (card, buffer, count, nonblock); out_up: up (&card->syscall_sem); out: DPRINTK ("EXIT, returning %ld\n",(long) rc); return rc; } static ssize_t via_dsp_do_write (struct via_info *card, const char *userbuf, size_t count, int nonblock) { // DECLARE_WAITQUEUE(wait, current); wait_queue_t wait; const char *orig_userbuf = userbuf; volatile struct via_sgd_table *sgtable; struct via_channel *chan; size_t size; int n, tmp; ssize_t ret = 0; if(card->using3D) chan = &card->ch_3D; else chan = &card->ch_out; sgtable = chan->sgtable; if(via_IsVT3074) setPcmStopIdx(chan->iobase, 0xff); handle_one_block: #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) if (current->need_resched) #else if(need_resched()) #endif { up(&card->syscall_sem); schedule (); ret = via_syscall_down (card, nonblock); if (ret) goto out; } n = chan->sw_ptr; init_waitqueue_entry(&wait, current); add_wait_queue(&chan->wait, &wait); for (;;) { __set_current_state(TASK_INTERRUPTIBLE); tmp = atomic_read (&chan->n_frags); assert (tmp >= 0); assert (tmp <= chan->frag_number); if (tmp) break; if (nonblock || !chan->is_active) { ret = -EAGAIN; break; } up(&card->syscall_sem); DPRINTK ("Sleeping on page %d, tmp==%d, ir==%d\n", n, tmp, chan->is_record); schedule(); ret = via_syscall_down (card, nonblock); if (ret) break; if (signal_pending (current)) { ret = -ERESTARTSYS; break; } } set_current_state(TASK_RUNNING); remove_wait_queue(&chan->wait, &wait); if (ret) goto out; /* Now that we have at least one fragment we can write to, fill the buffer * as much as possible with data from userspace. */ while ((count > 0) && (chan->slop_len < chan->frag_size)) { size_t slop_left = chan->frag_size - chan->slop_len; size = (count < slop_left) ? count : slop_left; if (copy_from_user (chan->pgtbl[n / (PAGE_SIZE / chan->frag_size)].cpuaddr + (n % (PAGE_SIZE / chan->frag_size)) * chan->frag_size + chan->slop_len, userbuf, size)) { ret = -EFAULT; goto out; } count -= size; chan->slop_len += size; userbuf += size; } if (chan->slop_len < chan->frag_size) { if(via_IsVT3074){ sgtable[n].count = setSGDflag (chan->slop_len, 1); /* set stop index for VT3074*/ setPcmStopIdx(chan->iobase, n); } else{ sgtable[n].count = setSGDflag(chan->slop_len, 3); } goto out; } /* Record the true size for the audio hardware to notice */ if (n == (chan->frag_number - 1)) sgtable[n].count = setSGDflag (chan->frag_size, 1); else sgtable[n].count = setSGDflag (chan->frag_size, 2); if (chan->sw_ptr == (chan->frag_number - 1)) chan->sw_ptr = 0; else chan->sw_ptr++; /* mark one less buffer as being available for userspace consumption */ assert (atomic_read (&chan->n_frags) > 0); atomic_dec (&chan->n_frags); /* we are at a block boundary, there is no fragment data */ chan->slop_len = 0; /* F01 S */ if((spdif_out == 1) && (card->Ext_Function & SPDIF) && (chan->is_active == 0)){ if(!(card->Ext_Function & AC3)) via_set_spdif_valid(card, 1); } /* F01 E */ /* if SGD has not yet been started, start it */ via_chan_maybe_start (chan); DPRINTK ("Flushed block %u, sw_ptr now %u, n_frags now %d\n", n, chan->sw_ptr, atomic_read (&chan->n_frags)); if (count > 0) goto handle_one_block; out: return userbuf - orig_userbuf; } static ssize_t via_dsp_write(struct file *file, const char *buffer, size_t count, loff_t *ppos) { struct via_info *card; ssize_t rc; int nonblock; assert(file!=NULL); nonblock = (file->f_flags & O_NONBLOCK); // DPRINTK (KERN_INFO " write ENTER, file=%p, buffer=%p, count=%u, ppos=%lu\n", file, buffer, count, ppos ? ((unsigned long)*ppos) : 0); assert (file != NULL); assert (buffer != NULL); card = file->private_data; assert (card != NULL); /*zhf if (ppos != &file->f_pos) { DPRINTK ("EXIT, returning -ESPIPE\n"); return -ESPIPE; } */ rc = via_syscall_down (card, nonblock); if (rc) goto out; if (card->ch_out.is_mapped || card->ch_3D.is_mapped) { rc = -ENXIO; goto out_up; } if(card->using3D){ via_chan_set_buffering(card, &card->ch_3D, -1); rc = via_chan_buffer_init (card, &card->ch_3D); } else{ via_chan_set_buffering(card, &card->ch_out, -1); rc = via_chan_buffer_init (card, &card->ch_out); } if (rc) goto out_up; rc = via_dsp_do_write (card, buffer, count, nonblock); out_up: up (&card->syscall_sem); out: // printk(KERN_INFO "write EXIT, returning %ld\n",(long) rc); return rc; } static unsigned int via_dsp_poll(struct file *file, poll_table *wait) { struct via_info *card; struct via_channel *chan; unsigned int mask = 0; // printk (KERN_INFO "poll ENTER\n"); assert (file != NULL); card = file->private_data; assert (card != NULL); // spin_lock_irq(&card->lock); if (file->f_mode & FMODE_READ) { chan = &card->ch_in; if (sg_active (chan->iobase)) if(atomic_read(&chan->n_frags) == 0 ) poll_wait(file, &chan->wait, wait); if (atomic_read (&chan->n_frags) > 0) mask |= POLLIN | POLLRDNORM; } if (file->f_mode & FMODE_WRITE) { if(card->using3D) chan = &card->ch_3D; else chan = &card->ch_out; if (sg_active (chan->iobase)) if(atomic_read(&chan->n_frags) == 0 ) poll_wait(file, &chan->wait, wait); if ((atomic_read (&chan->n_frags) > 0) || (!chan->is_active)) mask |= POLLOUT | POLLWRNORM; } // spin_unlock_irq(&card->lock); // printk (KERN_INFO " poll EXIT, returning %u\n", mask); return mask; } /** * via_dsp_drain_playback - sleep until all playback samples are flushed * @card: Private info for specified board * @chan: Channel to drain * @nonblock: boolean, non-zero if O_NONBLOCK is set * * Sleeps until all playback has been flushed to the audio hardware. * * Locking: inside card->syscall_sem */ static int via_dsp_drain_playback (struct via_info *card, struct via_channel *chan, int nonblock) { DECLARE_WAITQUEUE(wait, current); int ret = 0; DPRINTK ("ENTER, nonblock = %d\n", nonblock); if (chan->slop_len > 0) via_chan_flush_frag (chan); if (atomic_read (&chan->n_frags) == chan->frag_number) goto out; via_chan_maybe_start (chan); add_wait_queue(&chan->wait, &wait); for (;;) { __set_current_state(TASK_INTERRUPTIBLE); if (atomic_read (&chan->n_frags) >= chan->frag_number) break; if (nonblock) { DPRINTK ("EXIT, returning -EAGAIN\n"); ret = -EAGAIN; break; } up(&card->syscall_sem); DPRINTK ("sleeping, nbufs=%d\n", atomic_read (&chan->n_frags)); schedule(); if ((ret = via_syscall_down (card, nonblock))) break; if (signal_pending (current)) { DPRINTK ("EXIT, returning -ERESTARTSYS\n"); ret = -ERESTARTSYS; break; } } set_current_state(TASK_RUNNING); remove_wait_queue(&chan->wait, &wait); out: DPRINTK ("EXIT, returning %d\n", ret); return ret; } /** * via_dsp_ioctl_space - get information about channel buffering * Handles SNDCTL_DSP_GETISPACE and SNDCTL_DSP_GETOSPACE. */ static int via_dsp_ioctl_space (struct via_info *card, struct via_channel *chan, void *arg) { audio_buf_info info; via_chan_set_buffering(card, chan, -1); info.fragstotal = chan->frag_number; info.fragsize = chan->frag_size; /* number of full fragments we can read/write without blocking */ info.fragments = atomic_read (&chan->n_frags); if ((chan->slop_len % chan->frag_size > 0) && (info.fragments > 0)) info.fragments--; /* number of bytes that can be read or written immediately * without blocking. */ info.bytes = (info.fragments * chan->frag_size); if (chan->slop_len % chan->frag_size > 0) info.bytes += chan->frag_size - (chan->slop_len % chan->frag_size); DPRINTK ("EXIT, returning fragstotal=%d, fragsize=%d, fragments=%d, bytes=%d\n", info.fragstotal, info.fragsize, info.fragments, info.bytes); return copy_to_user (arg, &info, sizeof (info))?-EFAULT:0; } /** * via_dsp_ioctl_ptr - get information about hardware buffer ptr * Handles SNDCTL_DSP_GETIPTR and SNDCTL_DSP_GETOPTR. */ static int via_dsp_ioctl_ptr (struct via_info *card, struct via_channel *chan, void *arg) { count_info info; spin_lock_irq (&card->lock); info.bytes = chan->bytes; info.blocks = chan->n_irqs; chan->n_irqs = 0; spin_unlock_irq (&card->lock); if (chan->is_active) { unsigned long extra; info.ptr = atomic_read (&chan->hw_ptr) * chan->frag_size; extra = chan->frag_size - getPcmBlockCount (chan->iobase ); info.ptr += extra; info.bytes += extra; } else { info.ptr = 0; } DPRINTK ("EXIT, returning bytes=%d, blocks=%d, ptr=%d\n", info.bytes, info.blocks, info.ptr); return copy_to_user (arg, &info, sizeof (info))?-EFAULT:0; } static int via_dsp_ioctl_trigger (struct via_channel *chan, int val) { int enable, do_something; if (chan->is_record) enable = (val & PCM_ENABLE_INPUT); else enable = (val & PCM_ENABLE_OUTPUT); if (!chan->is_enabled && enable) { do_something = 1; } else if (chan->is_enabled && !enable) { do_something = -1; } else { do_something = 0; } DPRINTK ("enable=%d, do_something=%d\n", enable, do_something); if (chan->is_active && do_something) return -EINVAL; if (do_something == 1) { chan->is_enabled = 1; via_chan_maybe_start (chan); DPRINTK ("Triggering input\n"); } else if (do_something == -1) { chan->is_enabled = 0; DPRINTK ("Setup input trigger\n"); } return 0; } static int via_dsp_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { int rc, rd=0, wr=0, val=0; u16 tmp16=0; struct via_info *card; struct via_channel *chan_out; int nonblock = (file->f_flags & O_NONBLOCK); assert (file != NULL); card = file->private_data; assert (card != NULL); if (file->f_mode & FMODE_WRITE) wr = 1; if (file->f_mode & FMODE_READ) rd = 1; if (card->using3D) chan_out = &card->ch_3D; else chan_out = &card->ch_out; rc = via_syscall_down (card, nonblock); if (rc) return rc; rc = -EINVAL; switch (cmd) { /* OSS API version. XXX unverified */ case OSS_GETVERSION: DPRINTK ("ioctl OSS_GETVERSION, EXIT, returning SOUND_VERSION\n"); rc = put_user (SOUND_VERSION, (int *)arg); break; case SNDCTL_DRIVER_VERSION: rc = put_user (VIA_VERSION, (int *)arg); break; case SNDCTL_SET_SPDIF: if (get_user(val, (int *)arg)) { rc = -EFAULT; break; } if(val){ if(card->Ext_Capability & SPDIF){ spdif_out = 1; tmp16 = via_ac97_read_reg(&card->ac97, AC97_RESERVED_3A ); via_ac97_write_reg (&card->ac97, AC97_RESERVED_3A, tmp16 | 0x8000); tmp16 = via_ac97_read_reg(&card->ac97, AC97_EXTENDED_STATUS ); via_ac97_write_reg(&card->ac97, AC97_EXTENDED_STATUS, (tmp16 | 1 | SPDIF |0x8000)&(~0x0030) ); card->Ext_Function |= SPDIF ; } } else{ spdif_out = 0; card->Ext_Function &= ~SPDIF ; via_ac97_write_reg(&card->ac97, AC97_EXTENDED_STATUS, ((tmp16 & ~SPDIF ) | 1) ); } rc = 0; break; /* list of supported PCM data formats */ case SNDCTL_DSP_GETFMTS: DPRINTK ("DSP_GETFMTS, EXIT, returning AFMT U8|S16_LE\n"); if(card->Ext_Capability & AC3) rc = put_user(AFMT_S16_LE | AFMT_U8 | AFMT_AC3,(int *)arg); else rc = put_user (AFMT_U8 | AFMT_S16_LE, (int *)arg); break; /* Set EAPD bit */ case SNDCTL_SET_EAPD: if (get_user(val, (int *)arg)) { rc = -EFAULT; break; } tmp16 = via_ac97_read_reg (&card->ac97, AC97_POWER_CONTROL); if(val) via_ac97_write_reg (&card->ac97, AC97_POWER_CONTROL, tmp16 | 0x8000); else via_ac97_write_reg (&card->ac97, AC97_POWER_CONTROL, tmp16 & (~0x8000)); rc =0; break; /* Get EAPD bit */ case SNDCTL_GET_EAPD: tmp16 = via_ac97_read_reg (&card->ac97, AC97_POWER_CONTROL); rc = put_user (tmp16 & 0x8000, (int *)arg); break; /* enable or disable smart5.1 function */ case SOUND_MIXER_3DSE: if (get_user(val, (int *)arg)) { rc = -EFAULT; break; } rc =0; DPRINTK ("%s DSP Smart 5.1!\n", val? "Enable":"Disable"); enableSmart51(card->baseaddr,val); break; case SNDCTL_DSP_SPSR: if (get_user(val, (int *)arg)) { rc = -EFAULT; break; } tmp16 = via_ac97_read_reg (&card->ac97, AC97_RESERVED_3A); val = (tmp16 & (~0x3000)) | ((val & 0x3) << 12 ); DPRINTK ("SNDCTL_DSP_SPSR: AC97_RESERVED_3A: 0X%x, val: 0X%x\n", tmp16,val); /* first disable SPDIF bit, then write R3A */ tmp16 = via_ac97_read_reg (&card->ac97, AC97_EXTENDED_STATUS); if( tmp16 & SPDIF) via_ac97_write_reg (&card->ac97, AC97_EXTENDED_STATUS, tmp16 & (~SPDIF)); via_ac97_write_reg (&card->ac97, AC97_RESERVED_3A, val); if( tmp16 & SPDIF) via_ac97_write_reg (&card->ac97, AC97_EXTENDED_STATUS, tmp16 ); rc = 0; break; case SNDCTL_DSP_CD2SP: if (get_user(val, (int *)arg)) { rc = -EFAULT; break; } tmp16 = via_ac97_read_reg (&card->ac97, 0X76); if(val) via_ac97_write_reg (&card->ac97, 0X76, tmp16 | 0x40); else via_ac97_write_reg (&card->ac97, 0X76, tmp16 & (~0x40)); DPRINTK ("SNDCTL_DSP_CD2SP: %s\n", val?"ON":"OFF"); rc = 0; break; /* query 1st general bit" and "copyright" bit, CC[6-0]*/ case SNDCTL_DSP_GETSCMS: tmp16 = via_ac97_read_reg (&card->ac97, AC97_RESERVED_3A); val = (tmp16 & 0x0FF4) >> 2; DPRINTK ("DSP_GETSCMS: AC97_RESERVED_3A: 0X%x, val: 0X%x\n", tmp16,val); rc = put_user (val, (int *)arg); break; /* set 1st general bit" and "copyright" bit, CC[6-0] */ case SNDCTL_DSP_SETSCMS: if (get_user(val, (int *)arg) || val > 0X3ff) { rc = -EFAULT; break; } tmp16 = via_ac97_read_reg (&card->ac97, AC97_RESERVED_3A); val = (tmp16 & (~0x0FF4)) | ((val << 2) & 0x0FF4 ); DPRINTK ("DSP_SETSCMS: AC97_RESERVED_3A: 0X%x, val: 0X%x\n", tmp16,val); /* first disable SPDIF bit, then write R3A */ tmp16 = via_ac97_read_reg (&card->ac97, AC97_EXTENDED_STATUS); if( tmp16 & SPDIF) via_ac97_write_reg (&card->ac97, AC97_EXTENDED_STATUS, tmp16 & (~SPDIF)); via_ac97_write_reg (&card->ac97, AC97_RESERVED_3A, val); if( tmp16 & SPDIF) via_ac97_write_reg (&card->ac97, AC97_EXTENDED_STATUS, tmp16 ); rc = 0; break; /* query or set current channel's PCM data format */ case SNDCTL_DSP_SETFMT: if (get_user(val, (int *)arg)) { rc = -EFAULT; break; } DPRINTK ("DSP_SETFMT, val==%d\n", val); if (val != AFMT_QUERY) { rc = 0; if (rd) rc = via_chan_set_fmt (card, &card->ch_in, val); if (rc >= 0 && wr){ /* F01 S */ if (val == AFMT_AC3) { if(card->Ext_Capability & AC3) { card->Ext_Function |= AC3 ; tmp16 = via_ac97_read_reg(&card->ac97, AC97_EXTENDED_STATUS); via_ac97_write_reg(&card->ac97,AC97_EXTENDED_STATUS,(tmp16 | SPDIF)); tmp16 = via_ac97_read_reg(&card->ac97, AC97_RESERVED_3A); via_ac97_write_reg(&card->ac97,AC97_RESERVED_3A,(tmp16 | AC3 | 0x8000)); } } /* F01 E */ rc = via_chan_set_fmt (card, chan_out, val); } if (rc < 0) break; val = rc; } else { /* F01 S */ if( card->Ext_Function & AC3){ card->Ext_Function &= ~AC3; tmp16 = via_ac97_read_reg(&card->ac97, AC97_RESERVED_3A ); via_ac97_write_reg(&card->ac97, AC97_RESERVED_3A, (tmp16 & ~AC3)); if( !(card->Ext_Function & SPDIF)) { tmp16 = via_ac97_read_reg(&card->ac97, AC97_EXTENDED_STATUS ); via_ac97_write_reg(&card->ac97, AC97_EXTENDED_STATUS, (tmp16 & ~SPDIF) ); } } /* F01 E */ if ((rd && (card->ch_in.pcm_fmt & VIA_PCM_FMT_16BIT)) || (wr && chan_out->pcm_fmt & VIA_PCM_FMT_16BIT)) val = AFMT_S16_LE; else val = AFMT_U8; } DPRINTK ("SETFMT EXIT, returning %d\n", val); rc = put_user (val, (int *)arg); break; /* query or set number of channels (1=mono, 2=stereo) */ case SNDCTL_DSP_CHANNELS: if (get_user(val, (int *)arg)) { rc = -EFAULT; break; } DPRINTK ("DSP_CHANNELS, val==%d\n", val); if (val != 0) { rc = 0; if (rd) rc = via_chan_set_stereo (card, &card->ch_in, val); /* F02 S */ if(rc >= 0 && wr && val > 0 && val < 7 ){ if( card->using3D == 1) rc = via_chan_set_chans (card, &card->ch_3D, val); else rc = via_chan_set_stereo (card, &card->ch_out, val<2?1:2); } /* F02 E */ if (rc < 0) break; val = rc; } else { if (card->using3D == 1) val = card->n_channels; else if ((rd && (card->ch_in.pcm_fmt & VIA_PCM_FMT_STEREO)) || (wr && (card->ch_out.pcm_fmt & VIA_PCM_FMT_STEREO))) val = 2; else val = 1; } DPRINTK ("CHANNELS EXIT, returning %d\n", val); rc = put_user (val, (int *)arg); break; /* enable (val is not zero) or disable (val == 0) stereo */ case SNDCTL_DSP_STEREO: if (get_user(val, (int *)arg)) { rc = -EFAULT; break; } DPRINTK ("DSP_STEREO, val==%d\n", val); rc = 0; if (rd) rc = via_chan_set_stereo (card, &card->ch_in, val ? 2 : 1); if (rc >= 0 && wr){ if(card->using3D) rc = via_chan_set_chans (card, &card->ch_3D, val + 1); else{ rc = via_chan_set_stereo (card, &card->ch_out, val ? 2 : 1); } } /* if (rc >= 0 && wr && !card->using3D) rc = via_chan_set_stereo (card, &card->ch_out, val ? 2 : 1); */ //if (rc >= 0 && wr ) // rc = via_chan_set_chans (card, &card->ch_3D, val + 1); if (rc < 0) break; val = rc - 1; DPRINTK ("STEREO EXIT, returning %d\n", val); rc = put_user(val, (int *) arg); break; /* query or set sampling rate */ case SNDCTL_DSP_SPEED: if (get_user(val, (int *)arg)) { rc = -EFAULT; break; } DPRINTK ("DSP_SPEED, val==%d\n", val); if (val < 0) { rc = -EINVAL; break; } if (val > 0) { rc = 0; if (rd) rc = via_chan_set_speed (card, &card->ch_in, val); if (rc >= 0 && wr) rc = via_chan_set_speed (card, chan_out, val); if (rc < 0) break; val = rc; } else { if (rd) val = card->ch_in.rate; else if (wr) val = chan_out->rate; else val = 0; } DPRINTK ("SPEED EXIT, returning %d\n", val); rc = put_user (val, (int *)arg); break; /* wait until all buffers have been played, and then stop device */ case SNDCTL_DSP_SYNC: DPRINTK ("DSP_SYNC\n"); rc = 0; if (wr) { DPRINTK ("SYNC EXIT (after calling via_dsp_drain_playback)\n"); rc = via_dsp_drain_playback (card, chan_out, nonblock); } break; /* stop recording/playback immediately */ case SNDCTL_DSP_RESET: DPRINTK ("DSP_RESET\n"); if (rd) { via_chan_clear (card, &card->ch_in); card->ch_in.frag_number = 0; card->ch_in.frag_size = 0; atomic_set(&card->ch_in.n_frags, 0); } if (wr){ via_chan_clear (card, chan_out); chan_out->frag_number = 0; chan_out->frag_size = 0; atomic_set(&chan_out->n_frags, 0); } rc = 0; break; case SNDCTL_DSP_NONBLOCK: file->f_flags |= O_NONBLOCK; rc = 0; break; /* obtain bitmask of device capabilities, such as mmap, full duplex, etc. */ case SNDCTL_DSP_GETCAPS: DPRINTK ("DSP_GETCAPS\n"); rc = put_user(VIA_DSP_CAP, (int *)arg); break; /* obtain buffer fragment size */ case SNDCTL_DSP_GETBLKSIZE: DPRINTK ("DSP_GETBLKSIZE\n"); if (rd) { via_chan_set_buffering(card, &card->ch_in, -1); rc = put_user(card->ch_in.frag_size, (int *)arg); } if (wr){ via_chan_set_buffering(card, chan_out, -1); rc = put_user(chan_out->frag_size, (int *)arg); } break; /* obtain information about input buffering */ case SNDCTL_DSP_GETISPACE: DPRINTK ("DSP_GETISPACE\n"); if (rd) rc = via_dsp_ioctl_space (card, &card->ch_in, (void*) arg); break; /* obtain information about output buffering */ case SNDCTL_DSP_GETOSPACE: DPRINTK ("DSP_GETOSPACE\n"); if (wr) rc = via_dsp_ioctl_space (card, chan_out, (void*) arg); break; /* obtain information about input hardware pointer */ case SNDCTL_DSP_GETIPTR: DPRINTK ("DSP_GETIPTR\n"); if (rd) rc = via_dsp_ioctl_ptr (card, &card->ch_in, (void*) arg); break; /* obtain information about output hardware pointer */ case SNDCTL_DSP_GETOPTR: DPRINTK ("DSP_GETOPTR\n"); if (wr) rc = via_dsp_ioctl_ptr (card, chan_out, (void*) arg); break; /* return number of bytes remaining to be played by DMA engine */ case SNDCTL_DSP_GETODELAY: DPRINTK ("DSP_GETODELAY\n"); if (!wr) break; if (chan_out->is_active) { val = chan_out->frag_number - atomic_read (&chan_out->n_frags); if (val > 0) { val *= chan_out->frag_size; val -= chan_out->frag_size - getPcmBlockCount (chan_out->iobase); } val += chan_out->slop_len % chan_out->frag_size; } else val = 0; assert (val <= (chan_out->frag_size * chan_out->frag_number)); DPRINTK ("GETODELAY EXIT, val = %d bytes\n", val); rc = put_user (val, (int *)arg); break; /* handle the quick-start of a channel, * or the notification that a quick-start will * occur in the future */ case SNDCTL_DSP_SETTRIGGER: if (get_user(val, (int *)arg)) { rc = -EFAULT; break; } DPRINTK ("DSP_SETTRIGGER, rd=%d, wr=%d, act=%d/%d, en=%d/%d\n", rd, wr, card->ch_in.is_active, chan_out->is_active, card->ch_in.is_enabled, chan_out->is_enabled); rc = 0; if (rd) rc = via_dsp_ioctl_trigger (&card->ch_in, val); if (!rc && wr) rc = via_dsp_ioctl_trigger (chan_out, val); break; case SNDCTL_DSP_GETTRIGGER: val = 0; if ((file->f_mode & FMODE_READ) && card->ch_in.is_enabled) val |= PCM_ENABLE_INPUT; if ((file->f_mode & FMODE_WRITE) && chan_out->is_enabled) val |= PCM_ENABLE_OUTPUT; rc = put_user(val, (int *)arg); break; /* Enable full duplex. Since we do this as soon as we are opened * with O_RDWR, this is mainly a no-op that always returns success. */ case SNDCTL_DSP_SETDUPLEX: DPRINTK ("DSP_SETDUPLEX\n"); if (!rd || !wr) break; rc = 0; break; /* set fragment size. implemented as a successful no-op for now */ case SNDCTL_DSP_SETFRAGMENT: if (get_user(val, (int *)arg)) { rc = -EFAULT; break; } DPRINTK ("DSP_SETFRAGMENT, val==%d\n", val); if (rd) rc = via_chan_set_buffering(card, &card->ch_in, val); if (wr) rc = via_chan_set_buffering(card, chan_out, val); DPRINTK ("SNDCTL_DSP_SETFRAGMENT (fragshift==0x%04X (%d), maxfrags==0x%04X (%d))\n", val & 0xFFFF, val & 0xFFFF, (val >> 16) & 0xFFFF, (val >> 16) & 0xFFFF); rc = 0; break; /* inform device of an upcoming pause in input (or output). */ case SNDCTL_DSP_POST: DPRINTK ("DSP_POST\n"); if (wr) { if (chan_out->slop_len > 0) via_chan_flush_frag (chan_out); via_chan_maybe_start (chan_out); } rc = 0; break; /* not implemented */ default: DPRINTK ("unhandled ioctl, cmd==%u, arg==%p\n", cmd, (void*) arg); break; } up (&card->syscall_sem); DPRINTK ("EXIT, returning %d\n", rc); return rc; } static int via_dsp_open (struct inode *inode, struct file *file) { int minor; struct via_info *card; struct pci_dev *pdev; struct via_channel *chan; struct pci_driver *drvr; int nonblock; minor = MINOR(inode->i_rdev); nonblock = (file->f_flags & O_NONBLOCK); DPRINTK ("ENTER, minor=%d, file->f_mode=0x%x\n", minor, file->f_mode); if (!(file->f_mode & (FMODE_READ | FMODE_WRITE))) { DPRINTK ("EXIT, returning -EINVAL\n"); return -EINVAL; } card = NULL; pdev = NULL; #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) pci_for_each_dev(pdev) { #else while((pdev = pci_find_device(PCI_ANY_ID,PCI_ANY_ID,pdev)) != NULL){ #endif drvr = pci_dev_driver (pdev); if (drvr == &via_driver) { assert (pci_get_drvdata (pdev) != NULL); card = pci_get_drvdata (pdev); DPRINTK ("dev_dsp = %d, minor = %d, assn = %d\n", card->dev_dsp, minor, (card->dev_dsp ^ minor) & ~0xf); if (((card->dev_dsp ^ minor) & ~0xf) == 0) goto match; } } DPRINTK ("no matching %s found\n", card ? "minor" : "driver"); return -ENODEV; match: /* F03 S*/ down(&card->open_sem); if(card->open_mode & file->f_mode){ if (nonblock) { up(&card->open_sem); return -EBUSY; } else { up(&card->open_sem); interruptible_sleep_on(&card->open_wait); if (signal_pending(current)) return -ERESTARTSYS; down(&card->open_sem); } } /* F03 E */ file->private_data = card; DPRINTK ("file->f_mode == 0x%x\n", file->f_mode); /* handle input from analog source */ if (file->f_mode & FMODE_READ) { chan = &card->ch_in; via_chan_init (card, chan); /* why is this forced to 16-bit stereo in all drivers? */ chan->pcm_fmt = VIA_PCM_FMT_16BIT | VIA_PCM_FMT_STEREO; chan->pcm_fmt = via_chan_pcm_fmt (chan->iobase, chan->pcm_fmt, 0 , chan->is_record, chan->is_3D); via_set_rate (&card->ac97, chan, 44100); } /* handle output to analog source */ if (file->f_mode & FMODE_WRITE) { if (card->using3D) chan = &card->ch_3D; else chan = &card->ch_out; via_chan_init (card, chan); if (file->f_mode & FMODE_READ) { /* if in duplex mode make the recording and playback channels have the same settings */ chan->pcm_fmt = VIA_PCM_FMT_16BIT | VIA_PCM_FMT_STEREO; chan->pcm_fmt = via_chan_pcm_fmt (chan->iobase, chan->pcm_fmt, 0 , chan->is_record, chan->is_3D); via_set_rate (&card->ac97, chan, 44100); } else { if ((minor & 0xf) == SND_DEV_DSP16) { chan->pcm_fmt = VIA_PCM_FMT_16BIT; chan->pcm_fmt = via_chan_pcm_fmt (chan->iobase, chan->pcm_fmt, 0 , chan->is_record, chan->is_3D); via_set_rate (&card->ac97, chan, 44100); } else { chan->pcm_fmt = via_chan_pcm_fmt (chan->iobase, chan->pcm_fmt, 1 , chan->is_record, chan->is_3D); via_set_rate (&card->ac97, chan, 8000); } } } /* F03 S */ card->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE); up(&card->open_sem); /* F03 E */ DPRINTK ("EXIT, returning 0\n"); return 0; } static int via_dsp_release(struct inode *inode, struct file *file) { struct via_info *card; struct via_channel *chan; int nonblock = (file->f_flags & O_NONBLOCK); int rc; u16 tmp16; DPRINTK ("ENTER\n"); assert (file != NULL); card = file->private_data; assert (card != NULL); rc = via_syscall_down (card, nonblock); if (rc) { DPRINTK ("EXIT (syscall_down error), rc=%d\n", rc); return rc; } down(&card->open_sem); if (file->f_mode & FMODE_WRITE) { if (card->using3D) chan = &card->ch_3D; else chan = &card->ch_out; rc = via_dsp_drain_playback (card, chan, nonblock); // if (rc) // printk (KERN_DEBUG "via_audio: ignoring drain playback error %d\n", rc); via_chan_free (card, chan); via_chan_buffer_free(card, chan); /* F01 S */ if( card->Ext_Function & AC3){ card->Ext_Function &= ~AC3; tmp16 = via_ac97_read_reg(&card->ac97, AC97_RESERVED_3A ); via_ac97_write_reg(&card->ac97, AC97_RESERVED_3A, (tmp16 & ~AC3)); if( !(card->Ext_Function & SPDIF)) { tmp16 = via_ac97_read_reg(&card->ac97, AC97_EXTENDED_STATUS ); via_ac97_write_reg(&card->ac97, AC97_EXTENDED_STATUS, (tmp16 & ~SPDIF) ); } } if((spdif_out == 1 ) && (card->Ext_Function & SPDIF)) via_set_spdif_valid(card, 0); /* F01 E */ } if (file->f_mode & FMODE_READ) { via_chan_free (card, &card->ch_in); via_chan_buffer_free (card, &card->ch_in); } /* F03 S */ card->open_mode &= (~file->f_mode) & (FMODE_READ|FMODE_WRITE); up (&card->syscall_sem); up (&card->open_sem); wake_up(&card->open_wait); /* F03 E */ DPRINTK ("EXIT, returning 0\n"); return 0; } /* Chip setup and kernel registration */ static int __init via_init_one (struct pci_dev *pdev, const struct pci_device_id *id) { int rc; struct via_info *card; DPRINTK ("ENTER\n"); if(id->device != PCI_DEVICE_ID_VIA_82C686_5 && id->device != PCI_DEVICE_ID_VIA_8233_5){ printk(KERN_ERR PFX "Device ID(0X%X) not Supported\n", id->device); return -1; } rc = pci_enable_device (pdev); if (rc) goto err_out; rc = pci_request_regions (pdev, VIA_MODULE_NAME); if (rc) goto err_out_disable; card = kmalloc (sizeof (*card), GFP_KERNEL); if (!card) { printk (KERN_ERR PFX "out of memory, aborting\n"); rc = -ENOMEM; goto err_out_res; } pci_set_drvdata (pdev, card); setPcidevBase(pdev->bus->number, pdev->devfn); memset (card, 0, sizeof (*card)); card->pdev = pdev; card->baseaddr = pci_resource_start (pdev, 0); card->card_num = via_num_cards++; if(id->device == PCI_DEVICE_ID_VIA_8233_5){ via_IsVT3074 = 1; via_set_card_attri(via_IsVT3074); card->n_channels = 2; card->using3D =1; } if(id->device == PCI_DEVICE_ID_VIA_82C686_5) via_IsVT3074 = 0; spin_lock_init (&card->lock); init_MUTEX (&card->syscall_sem); init_MUTEX (&card->open_sem); init_waitqueue_head(&card->open_wait); card->open_mode =0; /* we must init these now, in case the intr handler needs them */ via_chan_init_defaults (card, &card->ch_out); via_chan_init_defaults (card, &card->ch_in); if(via_IsVT3074) via_chan_init_defaults (card, &card->ch_3D); else via_chan_init_defaults (card, &card->ch_fm); if (pdev->irq < 1) { printk (KERN_ERR PFX "invalid PCI IRQ %d, aborting\n", pdev->irq); rc = -ENODEV; goto err_out_kfree; } if (!(pci_resource_flags (pdev, 0) & IORESOURCE_IO)) { printk (KERN_ERR PFX "unable to locate I/O resources, aborting\n"); rc = -ENODEV; goto err_out_kfree; } /* init AC97 mixer and codec */ rc = via_ac97_init (card); if (rc) { printk (KERN_ERR PFX "AC97 init failed, aborting\n"); goto err_out_kfree; } /* init DSP device */ rc = via_dsp_init (card); if (rc) { printk (KERN_ERR PFX "DSP device init failed, aborting\n"); goto err_out_have_mixer; } /* init and turn on interrupts, as the last thing we do */ rc = via_interrupt_init (card); if (rc) { printk (KERN_ERR PFX "interrupt init failed, aborting\n"); } printk (KERN_INFO PFX "board(%s) #%d at 0x%04lX, IRQ %d\n", via_IsVT3074?"VT3074":"VT3068", card->card_num + 1, card->baseaddr, pdev->irq); DPRINTK ("EXIT, returning 0\n"); return 0; via_dsp_cleanup (card); err_out_have_mixer: via_ac97_cleanup (card); err_out_kfree: kfree (card); err_out_res: pci_release_regions (pdev); err_out_disable: pci_disable_device (pdev); err_out: pci_set_drvdata (pdev, NULL); DPRINTK ("EXIT - returning %d\n", rc); return rc; } static void __exit via_remove_one (struct pci_dev *pdev) { struct via_info *card; DPRINTK ("ENTER\n"); assert (pdev != NULL); card = pci_get_drvdata (pdev); assert (card != NULL); free_irq (card->pdev->irq, card); via_dsp_cleanup (card); via_ac97_cleanup (card); kfree (card); pci_set_drvdata (pdev, NULL); pci_release_regions (pdev); pci_disable_device (pdev); pci_set_power_state (pdev, 3); /* ...zzzzzz */ DPRINTK ("EXIT\n"); return; } static int __init init_via_audio(void) { int rc; DPRINTK ("ENTER\n"); rc = pci_register_driver (&via_driver); /* rc = 0 in kernel 2.6.11 , rc = 1 for others*/ if (rc < 0) { pci_unregister_driver (&via_driver); DPRINTK ("EXIT, returning -ENODEV\n"); return -ENODEV; } DPRINTK ("EXIT, returning 0\n"); return 0; } static void __exit cleanup_via_audio(void) { DPRINTK ("ENTER\n"); pci_unregister_driver (&via_driver); DPRINTK ("EXIT\n"); } module_init(init_via_audio); module_exit(cleanup_via_audio); MODULE_AUTHOR("VIA"); MODULE_DESCRIPTION("DSP audio and mixer driver for VT 3074/3068 audio devices"); //MODULE_LICENSE("GPL"); //EXPORT_NO_SYMBOLS; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) MODULE_INFO(vermagic, VERMAGIC_STRING); #endif