patch-2.4.9 linux/drivers/sound/rme96xx.c
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- Lines: 1562
- Date:
Sun Aug 12 10:51:42 2001
- Orig file:
v2.4.8/linux/drivers/sound/rme96xx.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.4.8/linux/drivers/sound/rme96xx.c linux/drivers/sound/rme96xx.c
@@ -0,0 +1,1561 @@
+/* (C) 2000 Guenter Geiger <geiger@debian.org>
+ with copy/pastes from the driver of Winfried Ritsch <ritsch@iem.kug.ac.at>
+ based on es1370.c
+
+
+
+ * 10 Jan 2001: 0.1 initial version
+ * 19 Jan 2001: 0.2 fixed bug in select()
+ * 27 Apr 2001: 0.3 more than one card usable
+ * 11 May 2001: 0.4 fixed for SMP, included into kernel source tree
+ * 17 May 2001: 0.5 draining code didn't work on new cards
+ * 18 May 2001: 0.6 remove synchronize_irq() call
+
+TODO:
+ - test more than one card --- done
+ - check for pci IOREGION (see es1370) in rme96xx_probe ??
+ - error detection
+ - mmap interface
+ - mixer mmap interface
+ - mixer ioctl
+ - get rid of noise upon first open (why ??)
+ - allow multiple open(at least for read)
+ - allow multiple open for non overlapping regions
+ - recheck the multiple devices part (offsets of different devices, etc)
+ - do decent draining in _release --- done
+ - SMP support
+*/
+
+#ifndef RMEVERSION
+#define RMEVERSION "0.6"
+#endif
+
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/sched.h>
+#include <linux/sound.h>
+#include <linux/soundcard.h>
+#include <linux/pci.h>
+#include <linux/smp_lock.h>
+#include <asm/dma.h>
+#include <linux/init.h>
+#include <linux/poll.h>
+#include "rme96xx.h"
+
+#define NR_DEVICE 2
+
+static int devices = 1;
+MODULE_PARM(devices, "1-" __MODULE_STRING(NR_DEVICE) "i");
+MODULE_PARM_DESC(devices, "number of dsp devices allocated by the driver");
+
+
+MODULE_AUTHOR("Guenter Geiger, geiger@debian.org");
+MODULE_DESCRIPTION("RME9652/36 \"Hammerfall\" Driver");
+
+#ifdef DEBUG
+#define DBG(x) printk("RME_DEBUG:");x
+#define COMM(x) printk("RME_COMM: " x "\n");
+#else
+#define DBG(x) while (0) {}
+#define COMM(x)
+#endif
+
+/*--------------------------------------------------------------------------
+ Preporcessor Macros and Definitions
+ --------------------------------------------------------------------------*/
+
+#define RME96xx_MAGIC 0x6473
+
+/* Registers-Space in offsets from base address with 16MByte size */
+
+#define RME96xx_IO_EXTENT 16l*1024l*1024l
+#define RME96xx_CHANNELS_PER_CARD 26
+
+/* Write - Register */
+
+/* 0,4,8,12,16,20,24,28 ... hardware init (erasing fifo-pointer intern) */
+#define RME96xx_num_of_init_regs 8
+
+#define RME96xx_init_buffer (0/4)
+#define RME96xx_play_buffer (32/4) /* pointer to 26x64kBit RAM from mainboard */
+#define RME96xx_rec_buffer (36/4) /* pointer to 26x64kBit RAM from mainboard */
+#define RME96xx_control_register (64/4) /* exact meaning see below */
+#define RME96xx_irq_clear (96/4) /* irq acknowledge */
+#define RME96xx_time_code (100/4) /* if used with alesis adat */
+#define RME96xx_thru_base (128/4) /* 132...228 Thru for 26 channels */
+#define RME96xx_thru_channels RME96xx_CHANNELS_PER_CARD
+
+/* Read Register */
+
+#define RME96xx_status_register 0 /* meaning see below */
+
+
+
+/* Status Register: */
+/* ------------------------------------------------------------------------ */
+#define RME96xx_IRQ 0x0000001 /* IRQ is High if not reset by RMExx_irq_clear */
+#define RME96xx_lock_2 0x0000002 /* ADAT 3-PLL: 1=locked, 0=unlocked */
+#define RME96xx_lock_1 0x0000004 /* ADAT 2-PLL: 1=locked, 0=unlocked */
+#define RME96xx_lock_0 0x0000008 /* ADAT 1-PLL: 1=locked, 0=unlocked */
+
+#define RME96xx_fs48 0x0000010 /* sample rate 0 ...44.1/88.2, 1 ... 48/96 Khz */
+#define RME96xx_wsel_rd 0x0000020 /* if Word-Clock is used and valid then 1 */
+#define RME96xx_buf_pos1 0x0000040 /* Bit 6..15 : Position of buffer-pointer in 64Bytes-blocks */
+#define RME96xx_buf_pos2 0x0000080 /* resolution +/- 1 64Byte/block (since 64Bytes bursts) */
+
+#define RME96xx_buf_pos3 0x0000100 /* 10 bits = 1024 values */
+#define RME96xx_buf_pos4 0x0000200 /* if we mask off the first 6 bits, we can take the status */
+#define RME96xx_buf_pos5 0x0000400 /* register as sample counter in the hardware buffer */
+#define RME96xx_buf_pos6 0x0000800
+
+#define RME96xx_buf_pos7 0x0001000
+#define RME96xx_buf_pos8 0x0002000
+#define RME96xx_buf_pos9 0x0004000
+#define RME96xx_buf_pos10 0x0008000
+
+#define RME96xx_sync_2 0x0010000 /* if ADAT-IN3 synced to system clock */
+#define RME96xx_sync_1 0x0020000 /* if ADAT-IN2 synced to system clock */
+#define RME96xx_sync_0 0x0040000 /* if ADAT-IN1 synced to system clock */
+#define RME96xx_DS_rd 0x0080000 /* 1=Double Speed, 0=Normal Speed */
+
+#define RME96xx_tc_busy 0x0100000 /* 1=time-code copy in progress (960ms) */
+#define RME96xx_tc_out 0x0200000 /* time-code out bit */
+#define RME96xx_F_0 0x0400000 /* 000=64kHz, 100=88.2kHz, 011=96kHz */
+#define RME96xx_F_1 0x0800000 /* 111=32kHz, 110=44.1kHz, 101=48kHz, */
+
+#define RME96xx_F_2 0x1000000 /* od external Crystal Chip if ERF=1*/
+#define RME96xx_ERF 0x2000000 /* Error-Flag of SDPIF Receiver (1=No Lock)*/
+#define RME96xx_buffer_id 0x4000000 /* toggles by each interrupt on rec/play */
+#define RME96xx_tc_valid 0x8000000 /* 1 = a signal is detected on time-code input */
+
+/* Status Register Fields */
+
+#define RME96xx_lock (RME96xx_lock_0|RME96xx_lock_1|RME96xx_lock_2)
+#define RME96xx_buf_pos 0x000FFC0
+#define RME96xx_sync (RME96xx_sync_0|RME96xx_sync_1|RME96xx_sync_2)
+#define RME96xx_F (RME96xx_F_0|RME96xx_F_1|RME96xx_F_2)
+
+
+
+/* Control-Register: */
+/*--------------------------------------------------------------------------------*/
+
+#define RME96xx_start_bit 0x0001 /* start record/play */
+#define RME96xx_latency0 0x0002 /* Bit 0 - Buffer size or latency */
+#define RME96xx_latency1 0x0004 /* Bit 1 - Buffer size or latency */
+#define RME96xx_latency2 0x0008 /* Bit 2 - Buffer size or latency */
+
+#define RME96xx_Master 0x0010 /* Clock Mode Master=1,Slave/Auto=0 */
+#define RME96xx_IE 0x0020 /* Interupt Enable */
+#define RME96xx_freq 0x0040 /* samplerate 0=44.1/88.2, 1=48/96 kHz*/
+
+
+#define RME96xx_DS 0x0100 /* Doule Speed 0=44.1/48, 1=88.2/96 Khz */
+#define RME96xx_PRO 0x0200 /* spdif 0=consumer, 1=professional Mode*/
+#define RME96xx_EMP 0x0400 /* spdif Emphasis 0=None, 1=ON */
+#define RME96xx_Dolby 0x0800 /* spdif Non-audio bit 1=set, 0=unset */
+
+#define RME96xx_opt_out 0x1000 /* Use 1st optical OUT as SPDIF: 1=yes,0=no */
+#define RME96xx_wsel 0x2000 /* use Wordclock as sync (overwrites master)*/
+#define RME96xx_inp_0 0x4000 /* SPDIF-IN: 00=optical (ADAT1), */
+#define RME96xx_inp_1 0x8000 /* 01=koaxial (Cinch), 10=Internal CDROM*/
+
+#define RME96xx_SyncRef0 0x10000 /* preferred sync-source in autosync */
+#define RME96xx_SyncRef1 0x20000 /* 00=ADAT1,01=ADAT2,10=ADAT3,11=SPDIF */
+
+
+#define RME96xx_ctrl_init (RME96xx_latency0 |\
+ RME96xx_Master |\
+ RME96xx_inp_1)
+
+
+
+/* Control register fields and shortcuts */
+
+#define RME96xx_latency (RME96xx_latency0|RME96xx_latency1|RME96xx_latency2)
+#define RME96xx_inp (RME96xx_inp_0|RME96xx_inp_1)
+#define RME96xx_SyncRef (RME96xx_SyncRef0|RME96xx_SyncRef1)
+/* latency = 512Bytes * 2^n, where n is made from Bit3 ... Bit0 */
+
+#define RME96xx_SET_LATENCY(x) (((x)&0x7)<<1)
+#define RME96xx_GET_LATENCY(x) (((x)>>1)&0x7)
+#define RME96xx_SET_inp(x) (((x)&0x3)<<14)
+#define RME96xx_GET_inp(x) (((x)>>14)&0x3)
+#define RME96xx_SET_SyncRef(x) (((x)&0x3)<<17)
+#define RME96xx_GET_SyncRef(x) (((x)>>17)&0x3)
+
+
+/* buffer sizes */
+#define RME96xx_BYTES_PER_SAMPLE 4 /* sizeof(u32) */
+#define RME_16K 16*1024
+
+#define RME96xx_DMA_MAX_SAMPLES (RME_16K)
+#define RME96xx_DMA_MAX_SIZE (RME_16K * RME96xx_BYTES_PER_SAMPLE)
+#define RME96xx_DMA_MAX_SIZE_ALL (RME96xx_DMA_MAX_SIZE * RME96xx_CHANNELS_PER_CARD)
+
+#define RME96xx_NUM_OF_FRAGMENTS 2
+#define RME96xx_FRAGMENT_MAX_SIZE (RME96xx_DMA_MAX_SIZE/2)
+#define RME96xx_FRAGMENT_MAX_SAMPLES (RME96xx_DMA_MAX_SAMPLES/2)
+#define RME96xx_MAX_LATENCY 7 /* 16k samples */
+
+
+#define RME96xx_MAX_DEVS 4 /* we provide some OSS stereodevs */
+
+#define RME_MESS "rme96xx:"
+/*------------------------------------------------------------------------
+ Types, struct and function declarations
+ ------------------------------------------------------------------------*/
+
+
+/* --------------------------------------------------------------------- */
+
+static const char invalid_magic[] = KERN_CRIT RME_MESS" invalid magic value\n";
+
+#define VALIDATE_STATE(s) \
+({ \
+ if (!(s) || (s)->magic != RME96xx_MAGIC) { \
+ printk(invalid_magic); \
+ return -ENXIO; \
+ } \
+})
+
+/* --------------------------------------------------------------------- */
+
+
+static struct file_operations rme96xx_audio_fops;
+static struct file_operations rme96xx_mixer_fops;
+static int numcards;
+
+typedef int32_t raw_sample_t;
+
+typedef struct _rme96xx_info {
+
+ /* hardware settings */
+ int magic;
+ struct pci_dev * pcidev; /* pci_dev structure */
+ unsigned long *iobase;
+ unsigned int irq;
+
+ /* list of rme96xx devices */
+ struct list_head devs;
+
+ spinlock_t lock;
+
+ u32 *recbuf; /* memory for rec buffer */
+ u32 *playbuf; /* memory for play buffer */
+
+ u32 control_register;
+
+ u32 thru_bits; /* thru 1=on, 0=off channel 1=Bit1... channel 26= Bit26 */
+
+ int open_count;
+
+
+ int rate;
+ int latency;
+ unsigned int fragsize;
+ int started;
+
+ int hwptr; /* can be negativ because of pci burst offset */
+ unsigned int hwbufid; /* set by interrupt, buffer which is written/read now */
+
+ struct dmabuf {
+
+ unsigned int format;
+ int formatshift;
+ int inchannels; /* number of channels for device */
+ int outchannels; /* number of channels for device */
+ int mono; /* if true, we play mono on 2 channels */
+ int inoffset; /* which channel is considered the first one */
+ int outoffset;
+
+ /* state */
+ int opened; /* open() made */
+ int started; /* first write/read */
+ int mmapped; /* mmap */
+ int open_mode;
+
+ struct _rme96xx_info *s;
+
+ /* pointer to read/write position in buffer */
+ unsigned readptr;
+ unsigned writeptr;
+
+ unsigned error; /* over/underruns cleared on sync again */
+
+ /* waiting and locking */
+ wait_queue_head_t wait;
+ struct semaphore open_sem;
+ wait_queue_head_t open_wait;
+
+ } dma[RME96xx_MAX_DEVS];
+
+ int dspnum[RME96xx_MAX_DEVS]; /* register with sound subsystem */
+ int mixer; /* register with sound subsystem */
+} rme96xx_info;
+
+
+/* fiddling with the card (first level hardware control) */
+
+inline void rme96xx_set_ctrl(rme96xx_info* s,int mask)
+{
+
+ s->control_register|=mask;
+ writel(s->control_register,s->iobase + RME96xx_control_register);
+
+}
+
+inline void rme96xx_unset_ctrl(rme96xx_info* s,int mask)
+{
+
+ s->control_register&=(~mask);
+ writel(s->control_register,s->iobase + RME96xx_control_register);
+
+}
+
+
+
+/* the hwbuf in the status register seems to have some jitter, to get rid of
+ it, we first only let the numbers grow, to be on the secure side we
+ subtract a certain amount RME96xx_BURSTBYTES from the resulting number */
+
+/* the function returns the hardware pointer in bytes */
+#define RME96xx_BURSTBYTES -64 /* bytes by which hwptr could be off */
+
+inline int rme96xx_gethwptr(rme96xx_info* s,int exact)
+{
+ long flags;
+ if (exact) {
+ unsigned int hwp;
+/* the hwptr seems to be rather unreliable :(, so we don't use it */
+ spin_lock_irqsave(&s->lock,flags);
+
+ hwp = readl(s->iobase + RME96xx_status_register) & 0xffc0;
+ s->hwptr = (hwp < s->hwptr) ? s->hwptr : hwp;
+// s->hwptr = hwp;
+
+ spin_unlock_irqrestore(&s->lock,flags);
+ return (s->hwptr+RME96xx_BURSTBYTES) & ((s->fragsize<<1)-1);
+ }
+ return (s->hwbufid ? s->fragsize : 0);
+}
+
+inline void rme96xx_setlatency(rme96xx_info* s,int l)
+{
+ s->latency = l;
+ s->fragsize = 1<<(8+l);
+ rme96xx_unset_ctrl(s,RME96xx_latency);
+ rme96xx_set_ctrl(s,RME96xx_SET_LATENCY(l));
+}
+
+
+static void rme96xx_clearbufs(struct dmabuf* dma)
+{
+ int i,j;
+ unsigned long flags;
+
+ /* clear dmabufs */
+ for(i=0;i<devices;i++) {
+ for (j=0;j<dma->outchannels + dma->mono;j++)
+ memset(&dma->s->playbuf[(dma->outoffset + j)*RME96xx_DMA_MAX_SAMPLES],
+ 0, RME96xx_DMA_MAX_SIZE);
+ }
+ spin_lock_irqsave(&dma->s->lock,flags);
+ dma->writeptr = 0;
+ dma->readptr = 0;
+ spin_unlock_irqrestore(&dma->s->lock,flags);
+}
+
+static int rme96xx_startcard(rme96xx_info *s,int stop)
+{
+ int i;
+ long flags;
+
+ COMM ("startcard");
+ if(s->control_register & RME96xx_IE){
+ /* disable interrupt first */
+
+ rme96xx_unset_ctrl( s,RME96xx_start_bit );
+ udelay(10);
+ rme96xx_unset_ctrl( s,RME96xx_IE);
+ spin_lock_irqsave(&s->lock,flags); /* timing is critical */
+ s->started = 0;
+ spin_unlock_irqrestore(&s->lock,flags);
+ if (stop) {
+ COMM("Sound card stopped");
+ return 1;
+ }
+ }
+ COMM ("interupt disabled");
+ /* first initialize all pointers on card */
+ for(i=0;i<RME96xx_num_of_init_regs;i++){
+ writel(0,s->iobase + i);
+ udelay(10); /* ?? */
+ }
+ COMM ("regs cleaned");
+
+ spin_lock_irqsave(&s->lock,flags); /* timing is critical */
+ udelay(10);
+ s->started = 1;
+ s->hwptr = 0;
+ spin_unlock_irqrestore(&s->lock,flags);
+
+ rme96xx_set_ctrl( s, RME96xx_IE | RME96xx_start_bit);
+
+
+ COMM("Sound card started");
+
+ return 1;
+}
+
+
+inline int rme96xx_getospace(struct dmabuf * dma, unsigned int hwp)
+{
+ int cnt;
+ int swptr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dma->s->lock,flags);
+ swptr = dma->writeptr;
+ cnt = (hwp - swptr);
+
+ if (cnt < 0) {
+ cnt = ((dma->s->fragsize<<1) - swptr);
+ }
+ spin_unlock_irqrestore(&dma->s->lock,flags);
+ return cnt;
+}
+
+inline int rme96xx_getispace(struct dmabuf * dma, unsigned int hwp)
+{
+ int cnt;
+ int swptr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dma->s->lock,flags);
+ swptr = dma->readptr;
+ cnt = (hwp - swptr);
+
+ if (cnt < 0) {
+ cnt = ((dma->s->fragsize<<1) - swptr);
+ }
+ spin_unlock_irqrestore(&dma->s->lock,flags);
+ return cnt;
+}
+
+
+inline int rme96xx_copyfromuser(struct dmabuf* dma,const char* buffer,int count,int hop)
+{
+ int swptr = dma->writeptr;
+ switch (dma->format) {
+ case AFMT_S32_BLOCKED:
+ {
+ char* buf = (char*)buffer;
+ int cnt = count/dma->outchannels;
+ int i;
+ for (i=0;i < dma->outchannels;i++) {
+ char* hwbuf =(char*) &dma->s->playbuf[(dma->outoffset + i)*RME96xx_DMA_MAX_SAMPLES];
+ hwbuf+=swptr;
+
+ if (copy_from_user(hwbuf,buf, cnt))
+ return -1;
+ buf+=hop;
+ }
+ swptr+=cnt;
+ break;
+ }
+ case AFMT_S16_LE:
+ {
+ int i,j;
+ int cnt = count/dma->outchannels;
+ for (i=0;i < dma->outchannels + dma->mono;i++) {
+ short* sbuf = (short*)buffer + i*(!dma->mono);
+ short* hwbuf =(short*) &dma->s->playbuf[(dma->outoffset + i)*RME96xx_DMA_MAX_SAMPLES];
+ hwbuf+=(swptr>>1);
+ for (j=0;j<(cnt>>1);j++) {
+ hwbuf++; /* skip the low 16 bits */
+ __get_user(*hwbuf++,sbuf++);
+ sbuf+=(dma->outchannels-1);
+ }
+ }
+ swptr += (cnt<<1);
+ break;
+ }
+ default:
+ printk(RME_MESS" unsupported format\n");
+ return -1;
+ } /* switch */
+
+ swptr&=((dma->s->fragsize<<1) -1);
+ dma->writeptr = swptr;
+
+ return 0;
+}
+
+/* The count argument is the number of bytes */
+inline int rme96xx_copytouser(struct dmabuf* dma,const char* buffer,int count,int hop)
+{
+ int swptr = dma->readptr;
+ switch (dma->format) {
+ case AFMT_S32_BLOCKED:
+ {
+ char* buf = (char*)buffer;
+ int cnt = count/dma->inchannels;
+ int i;
+
+ for (i=0;i < dma->inchannels;i++) {
+ char* hwbuf =(char*) &dma->s->recbuf[(dma->inoffset + i)*RME96xx_DMA_MAX_SAMPLES];
+ hwbuf+=swptr;
+
+ if (copy_to_user(buf,hwbuf,cnt))
+ return -1;
+ buf+=hop;
+ }
+ swptr+=cnt;
+ break;
+ }
+ case AFMT_S16_LE:
+ {
+ int i,j;
+ int cnt = count/dma->inchannels;
+ for (i=0;i < dma->inchannels;i++) {
+ short* sbuf = (short*)buffer + i;
+ short* hwbuf =(short*) &dma->s->recbuf[(dma->inoffset + i)*RME96xx_DMA_MAX_SAMPLES];
+ hwbuf+=(swptr>>1);
+ for (j=0;j<(cnt>>1);j++) {
+ hwbuf++;
+ __put_user(*hwbuf++,sbuf++);
+ sbuf+=(dma->inchannels-1);
+ }
+ }
+ swptr += (cnt<<1);
+ break;
+ }
+ default:
+ printk(RME_MESS" unsupported format\n");
+ return -1;
+ } /* switch */
+
+ swptr&=((dma->s->fragsize<<1) -1);
+ dma->readptr = swptr;
+ return 0;
+}
+
+
+static void rme96xx_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ int i;
+ rme96xx_info *s = (rme96xx_info *)dev_id;
+ struct dmabuf *db;
+ u32 status;
+ unsigned long flags;
+
+ status = readl(s->iobase + RME96xx_status_register);
+ if (!(status & RME96xx_IRQ)) {
+ return;
+ }
+
+ spin_lock_irqsave(&s->lock,flags);
+ writel(0,s->iobase + RME96xx_irq_clear);
+
+ s->hwbufid = (status & RME96xx_buffer_id)>>26;
+ if ((status & 0xffc0) <= 256) s->hwptr = 0;
+ for(i=0;i<devices;i++)
+ {
+ db = &(s->dma[i]);
+ if(db->started > 0)
+ wake_up(&(db->wait));
+ }
+ spin_unlock_irqrestore(&s->lock,flags);
+}
+
+
+
+/*----------------------------------------------------------------------------
+ PCI detection and module initialization stuff
+ ----------------------------------------------------------------------------*/
+
+void* busmaster_malloc(int size) {
+ int pg; /* 2 s exponent of memory size */
+ char *buf;
+
+ DBG(printk("kernel malloc pages ..\n"));
+
+ for (pg = 0; PAGE_SIZE * (1 << pg) < size; pg++);
+
+ buf = (char *) __get_free_pages(GFP_KERNEL | GFP_DMA, pg);
+
+ if (buf) {
+ struct page* page, *last_page;
+
+ page = virt_to_page(buf);
+ last_page = virt_to_page(buf + (1 << pg));
+ DBG(printk("setting reserved bit\n"));
+ while (page < last_page) {
+ SetPageReserved(page);
+ page++;
+ }
+ return buf;
+ }
+ DBG(printk("allocated %ld",(long)buf));
+ return NULL;
+}
+
+void busmaster_free(void* ptr,int size) {
+ int pg;
+ struct page* page, *last_page;
+
+ if (ptr == NULL)
+ return;
+
+ for (pg = 0; PAGE_SIZE * (1 << pg) < size; pg++);
+
+ page = virt_to_page(ptr);
+ last_page = page + (1 << pg);
+ while (page < last_page) {
+ ClearPageReserved(page);
+ page++;
+ }
+ DBG(printk("freeing pages\n"));
+ free_pages((unsigned long) ptr, pg);
+ DBG(printk("done\n"));
+}
+
+/* initialize those parts of the info structure which are not pci detectable resources */
+
+static int rme96xx_dmabuf_init(rme96xx_info * s,struct dmabuf* dma,int ioffset,int ooffset) {
+
+ init_MUTEX(&dma->open_sem);
+ init_waitqueue_head(&dma->open_wait);
+ init_waitqueue_head(&dma->wait);
+ dma->s = s;
+ dma->error = 0;
+
+ dma->format = AFMT_S32_BLOCKED;
+ dma->formatshift = 0;
+ dma->inchannels = dma->outchannels = 1;
+ dma->inoffset = ioffset;
+ dma->outoffset = ooffset;
+
+ dma->opened=0;
+ dma->started=0;
+ dma->mmapped=0;
+ dma->open_mode=0;
+ dma->mono=0;
+
+ rme96xx_clearbufs(dma);
+ return 0;
+}
+
+
+int rme96xx_init(rme96xx_info* s)
+{
+ int i;
+ DBG(printk(__FUNCTION__"\n"));
+ numcards++;
+
+ s->magic = RME96xx_MAGIC;
+
+ spin_lock_init(&s->lock);
+
+ COMM ("setup busmaster memory")
+ s->recbuf = busmaster_malloc(RME96xx_DMA_MAX_SIZE_ALL);
+ s->playbuf = busmaster_malloc(RME96xx_DMA_MAX_SIZE_ALL);
+
+ if (!s->recbuf || !s->playbuf) {
+ printk(KERN_ERR RME_MESS" Unable to allocate busmaster memory\n");
+ return -ENODEV;
+ }
+
+ COMM ("setting rec and playbuffers")
+
+ writel((u32) virt_to_bus(s->recbuf),s->iobase + RME96xx_rec_buffer);
+ writel((u32) virt_to_bus(s->playbuf),s->iobase + RME96xx_play_buffer);
+
+ COMM ("initializing control register")
+ rme96xx_unset_ctrl(s,0xffffffff);
+ rme96xx_set_ctrl(s,RME96xx_ctrl_init);
+
+
+ COMM ("setup devices")
+ for (i=0;i < devices;i++) {
+ struct dmabuf * dma = &s->dma[i];
+ rme96xx_dmabuf_init(s,dma,2*i,2*i);
+ }
+
+ s->started = 0;
+ rme96xx_setlatency(s,7);
+
+ printk(KERN_INFO RME_MESS" card %d initialized\n",numcards);
+ return 0;
+}
+
+
+/* open uses this to figure out which device was opened .. this seems to be
+ unnecessary complex */
+
+static LIST_HEAD(devs);
+
+static int __devinit rme96xx_probe(struct pci_dev *pcidev, const struct pci_device_id *pciid)
+{
+ int i;
+ rme96xx_info *s;
+
+ DBG(printk(__FUNCTION__"\n"));
+
+ if (pcidev->irq == 0)
+ return -1;
+ if (!pci_dma_supported(pcidev, 0xffffffff)) {
+ printk(KERN_WARNING RME_MESS" architecture does not support 32bit PCI busmaster DMA\n");
+ return -1;
+ }
+ if (!(s = kmalloc(sizeof(rme96xx_info), GFP_KERNEL))) {
+ printk(KERN_WARNING RME_MESS" out of memory\n");
+ return -1;
+ }
+ memset(s, 0, sizeof(rme96xx_info));
+
+ s->pcidev = pcidev;
+ s->iobase = ioremap(pci_resource_start(pcidev, 0),RME96xx_IO_EXTENT);
+ s->irq = pcidev->irq;
+
+ DBG(printk("remapped iobase: %lx irq %d\n",(long)s->iobase,s->irq));
+
+ if (pci_enable_device(pcidev))
+ goto err_irq;
+ if (request_irq(s->irq, rme96xx_interrupt, SA_SHIRQ, "es1370", s)) {
+ printk(KERN_ERR RME_MESS" irq %u in use\n", s->irq);
+ goto err_irq;
+ }
+
+ /* initialize the card */
+
+ i = 0;
+ if (rme96xx_init(s) < 0) {
+ printk(KERN_ERR RME_MESS" initialization failed\n");
+ goto err_devices;
+ }
+ for (i=0;i<devices;i++) {
+ if ((s->dspnum[i] = register_sound_dsp(&rme96xx_audio_fops, -1)) < 0)
+ goto err_devices;
+ }
+
+ if ((s->mixer = register_sound_mixer(&rme96xx_mixer_fops, -1)) < 0)
+ goto err_devices;
+
+ pci_set_drvdata(pcidev, s);
+ pcidev->dma_mask = 0xffffffff; /* ????? */
+ /* put it into driver list */
+ list_add_tail(&s->devs, &devs);
+
+ DBG(printk("initialization successful\n"));
+ return 0;
+
+ /* error handler */
+ err_devices:
+ while (i--)
+ unregister_sound_dsp(s->dspnum[i]);
+ free_irq(s->irq,s);
+ err_irq:
+ kfree(s);
+ return -1;
+}
+
+
+static void __devinit rme96xx_remove(struct pci_dev *dev)
+{
+ int i;
+ rme96xx_info *s = pci_get_drvdata(dev);
+
+ if (!s) {
+ printk(KERN_ERR"device structure not valid\n");
+ return ;
+ }
+
+ if (s->started) rme96xx_startcard(s,0);
+
+ i = devices;
+ while (i) {
+ i--;
+ unregister_sound_dsp(s->dspnum[i]);
+ }
+
+ unregister_sound_mixer(s->mixer);
+/* synchronize_irq(); This call got lost somehow ? */
+ free_irq(s->irq,s);
+ busmaster_free(s->recbuf,RME96xx_DMA_MAX_SIZE_ALL);
+ busmaster_free(s->playbuf,RME96xx_DMA_MAX_SIZE_ALL);
+ kfree(s);
+ pci_set_drvdata(dev, NULL);
+}
+
+
+#ifndef PCI_VENDOR_ID_RME
+#define PCI_VENDOR_ID_RME 0x10ee
+#endif
+#ifndef PCI_DEVICE_ID_RME9652
+#define PCI_DEVICE_ID_RME9652 0x3fc4
+#endif
+#ifndef PCI_ANY_ID
+#define PCI_ANY_ID 0
+#endif
+
+static struct pci_device_id id_table[] __devinitdata = {
+ { PCI_VENDOR_ID_RME, PCI_DEVICE_ID_RME9652, PCI_ANY_ID, PCI_ANY_ID, 0, 0 },
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, id_table);
+
+static struct pci_driver rme96xx_driver = {
+ name: "rme96xx",
+ id_table: id_table,
+ probe: rme96xx_probe,
+ remove: rme96xx_remove
+};
+
+static int __init init_rme96xx(void)
+{
+
+ if (!pci_present()) /* No PCI bus in this machine! */
+ return -ENODEV;
+ printk(KERN_INFO RME_MESS" version "RMEVERSION" time " __TIME__ " " __DATE__ "\n");
+ printk(KERN_INFO RME_MESS" reserving %d dsp device(s)\n",devices);
+ numcards = 0;
+ return pci_module_init(&rme96xx_driver);
+}
+
+static void __exit cleanup_rme96xx(void)
+{
+ printk(KERN_INFO RME_MESS" unloading\n");
+ pci_unregister_driver(&rme96xx_driver);
+}
+
+module_init(init_rme96xx);
+module_exit(cleanup_rme96xx);
+
+
+
+
+
+/*--------------------------------------------------------------------------
+ Implementation of file operations
+---------------------------------------------------------------------------*/
+
+#define RME96xx_FMT (AFMT_S16_LE|AFMT_U8|AFMT_S32_BLOCKED)
+
+
+static int rme96xx_ioctl(struct inode *in, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+
+
+ struct dmabuf * dma = (struct dmabuf *)file->private_data;
+ rme96xx_info *s = dma->s;
+ unsigned long flags;
+ audio_buf_info abinfo;
+ count_info cinfo;
+ int count;
+ int val = 0;
+
+ VALIDATE_STATE(s);
+
+ DBG(printk("ioctl %ud\n",cmd));
+
+ switch (cmd) {
+ case OSS_GETVERSION:
+ return put_user(SOUND_VERSION, (int *)arg);
+
+ case SNDCTL_DSP_SYNC:
+#if 0
+ if (file->f_mode & FMODE_WRITE)
+ return drain_dac2(s, 0/*file->f_flags & O_NONBLOCK*/);
+#endif
+ return 0;
+
+ case SNDCTL_DSP_SETDUPLEX:
+ return 0;
+
+ case SNDCTL_DSP_GETCAPS:
+ return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME | DSP_CAP_TRIGGER | DSP_CAP_MMAP, (int *)arg);
+
+ case SNDCTL_DSP_RESET:
+// rme96xx_clearbufs(dma);
+ return 0;
+
+ case SNDCTL_DSP_SPEED:
+ if (get_user(val, (int *)arg))
+ return -EFAULT;
+ if (val >= 0) {
+/* generally it's not a problem if we change the speed
+ if (dma->open_mode & (~file->f_mode) & (FMODE_READ|FMODE_WRITE))
+ return -EINVAL;
+*/
+ spin_lock_irqsave(&s->lock, flags);
+
+ switch (val) {
+ case 44100:
+ case 88200:
+ rme96xx_unset_ctrl(s,RME96xx_freq);
+ break;
+ case 48000:
+ case 96000:
+ rme96xx_set_ctrl(s,RME96xx_freq);
+ break;
+ default:
+ rme96xx_unset_ctrl(s,RME96xx_freq);
+ val = 44100;
+ }
+ if (val > 50000)
+ rme96xx_set_ctrl(s,RME96xx_DS);
+ else
+ rme96xx_unset_ctrl(s,RME96xx_DS);
+ s->rate = val;
+ spin_unlock_irqrestore(&s->lock, flags);
+ }
+ DBG(printk("speed set to %d\n",val));
+ return put_user(val, (int *)arg);
+
+ case SNDCTL_DSP_STEREO: /* this plays a mono file on two channels */
+ if (get_user(val, (int *)arg))
+ return -EFAULT;
+
+ if (!val) {
+ DBG(printk("setting to mono\n"));
+ dma->mono=1;
+ dma->inchannels = 1;
+ dma->outchannels = 1;
+ }
+ else {
+ DBG(printk("setting to stereo\n"));
+ dma->mono = 0;
+ dma->inchannels = 2;
+ dma->outchannels = 2;
+ }
+ return 0;
+ case SNDCTL_DSP_CHANNELS:
+ /* remember to check for resonable offset/channel pairs here */
+ if (get_user(val, (int *)arg))
+ return -EFAULT;
+
+ if (file->f_mode & FMODE_WRITE) {
+ if (val > 0 && (dma->outoffset + val) <= RME96xx_CHANNELS_PER_CARD)
+ dma->outchannels = val;
+ else
+ dma->outchannels = val = 2;
+ DBG(printk("setting to outchannels %d\n",val));
+ }
+ if (file->f_mode & FMODE_READ) {
+ if (val > 0 && (dma->inoffset + val) <= RME96xx_CHANNELS_PER_CARD)
+ dma->inchannels = val;
+ else
+ dma->inchannels = val = 2;
+ DBG(printk("setting to inchannels %d\n",val));
+ }
+
+ dma->mono=0;
+
+ return put_user(val, (int *)arg);
+
+ case SNDCTL_DSP_GETFMTS: /* Returns a mask */
+ return put_user(RME96xx_FMT, (int *)arg);
+
+ case SNDCTL_DSP_SETFMT: /* Selects ONE fmt*/
+ DBG(printk("setting to format %x\n",val));
+ if (get_user(val, (int *)arg))
+ return -EFAULT;
+ if (val != AFMT_QUERY) {
+ if (val & RME96xx_FMT)
+ dma->format = val;
+ switch (dma->format) {
+ case AFMT_S16_LE:
+ dma->formatshift=1;
+ break;
+ case AFMT_S32_BLOCKED:
+ dma->formatshift=0;
+ break;
+ }
+ }
+ return put_user(dma->format, (int *)arg);
+
+ case SNDCTL_DSP_POST:
+ return 0;
+
+ case SNDCTL_DSP_GETTRIGGER:
+ val = 0;
+#if 0
+ if (file->f_mode & FMODE_READ && s->ctrl & CTRL_ADC_EN)
+ val |= PCM_ENABLE_INPUT;
+ if (file->f_mode & FMODE_WRITE && s->ctrl & CTRL_DAC2_EN)
+ val |= PCM_ENABLE_OUTPUT;
+#endif
+ return put_user(val, (int *)arg);
+
+ case SNDCTL_DSP_SETTRIGGER:
+ if (get_user(val, (int *)arg))
+ return -EFAULT;
+#if 0
+ if (file->f_mode & FMODE_READ) {
+ if (val & PCM_ENABLE_INPUT) {
+ if (!s->dma_adc.ready && (ret = prog_dmabuf_adc(s)))
+ return ret;
+ start_adc(s);
+ } else
+ stop_adc(s);
+ }
+ if (file->f_mode & FMODE_WRITE) {
+ if (val & PCM_ENABLE_OUTPUT) {
+ if (!s->dma_dac2.ready && (ret = prog_dmabuf_dac2(s)))
+ return ret;
+ start_dac2(s);
+ } else
+ stop_dac2(s);
+ }
+#endif
+ return 0;
+
+ case SNDCTL_DSP_GETOSPACE:
+ if (!(file->f_mode & FMODE_WRITE))
+ return -EINVAL;
+
+ val = rme96xx_gethwptr(dma->s,0);
+
+
+ count = rme96xx_getospace(dma,val);
+ if (!s->started) count = s->fragsize*2;
+ abinfo.fragsize =(s->fragsize*dma->outchannels)>>dma->formatshift;
+ abinfo.bytes = (count*dma->outchannels)>>dma->formatshift;
+ abinfo.fragstotal = 2;
+ abinfo.fragments = (count > s->fragsize);
+
+ return copy_to_user((void *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
+
+ case SNDCTL_DSP_GETISPACE:
+ if (!(file->f_mode & FMODE_READ))
+ return -EINVAL;
+
+ val = rme96xx_gethwptr(dma->s,0);
+
+ count = rme96xx_getispace(dma,val);
+
+ abinfo.fragsize = (s->fragsize*dma->inchannels)>>dma->formatshift;
+ abinfo.bytes = (count*dma->inchannels)>>dma->formatshift;;
+ abinfo.fragstotal = 2;
+ abinfo.fragments = count > s->fragsize;
+ 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: /* What shold this exactly do ? ,
+ ATM it is just abinfo.bytes */
+ if (!(file->f_mode & FMODE_WRITE))
+ return -EINVAL;
+
+ val = rme96xx_gethwptr(dma->s,0);
+ count = val - dma->readptr;
+ if (count < 0)
+ count += s->fragsize<<1;
+
+ return put_user(count, (int *)arg);
+
+
+/* check out how to use mmaped mode (can only be blocked !!!) */
+ case SNDCTL_DSP_GETIPTR:
+ if (!(file->f_mode & FMODE_READ))
+ return -EINVAL;
+ val = rme96xx_gethwptr(dma->s,0);
+ spin_lock_irqsave(&s->lock,flags);
+ cinfo.bytes = s->fragsize<<1;;
+ count = val - dma->readptr;
+ if (count < 0)
+ count += s->fragsize<<1;
+
+ cinfo.blocks = (count > s->fragsize);
+ cinfo.ptr = val;
+ if (dma->mmapped)
+ dma->readptr &= s->fragsize<<1;
+ spin_unlock_irqrestore(&s->lock,flags);
+
+ return copy_to_user((void *)arg, &cinfo, sizeof(cinfo));
+
+ case SNDCTL_DSP_GETOPTR:
+ if (!(file->f_mode & FMODE_READ))
+ return -EINVAL;
+ val = rme96xx_gethwptr(dma->s,0);
+ spin_lock_irqsave(&s->lock,flags);
+ cinfo.bytes = s->fragsize<<1;;
+ count = val - dma->writeptr;
+ if (count < 0)
+ count += s->fragsize<<1;
+
+ cinfo.blocks = (count > s->fragsize);
+ cinfo.ptr = val;
+ if (dma->mmapped)
+ dma->writeptr &= s->fragsize<<1;
+ spin_unlock_irqrestore(&s->lock,flags);
+ return copy_to_user((void *)arg, &cinfo, sizeof(cinfo));
+ case SNDCTL_DSP_GETBLKSIZE:
+ return put_user(s->fragsize, (int *)arg);
+
+ case SNDCTL_DSP_SETFRAGMENT:
+ if (get_user(val, (int *)arg))
+ return -EFAULT;
+ val&=0xffff;
+ val -= 7;
+ if (val < 0) val = 0;
+ if (val > 7) val = 7;
+ rme96xx_setlatency(s,val);
+ return 0;
+
+ case SNDCTL_DSP_SUBDIVIDE:
+#if 0
+ if ((file->f_mode & FMODE_READ && s->dma_adc.subdivision) ||
+ (file->f_mode & FMODE_WRITE && s->dma_dac2.subdivision))
+ return -EINVAL;
+ if (get_user(val, (int *)arg))
+ return -EFAULT;
+ if (val != 1 && val != 2 && val != 4)
+ return -EINVAL;
+ if (file->f_mode & FMODE_READ)
+ s->dma_adc.subdivision = val;
+ if (file->f_mode & FMODE_WRITE)
+ s->dma_dac2.subdivision = val;
+#endif
+ return 0;
+
+ case SOUND_PCM_READ_RATE:
+ return put_user(s->rate, (int *)arg);
+
+ case SOUND_PCM_READ_CHANNELS:
+ return put_user(dma->outchannels, (int *)arg);
+
+ case SOUND_PCM_READ_BITS:
+ switch (dma->format) {
+ case AFMT_S32_BLOCKED:
+ val = 32;
+ break;
+ case AFMT_S16_LE:
+ val = 16;
+ break;
+ }
+ return put_user(val, (int *)arg);
+
+ case SOUND_PCM_WRITE_FILTER:
+ case SNDCTL_DSP_SETSYNCRO:
+ case SOUND_PCM_READ_FILTER:
+ return -EINVAL;
+
+ }
+
+
+ return -ENODEV;
+}
+
+
+
+static int rme96xx_open(struct inode *in, struct file *f)
+{
+ int minor = MINOR(in->i_rdev);
+ struct list_head *list;
+ int devnum = ((minor-3)/16) % devices; /* default = 0 */
+ rme96xx_info *s;
+ struct dmabuf* dma;
+ DECLARE_WAITQUEUE(wait, current);
+
+ DBG(printk("device num %d open\n",devnum));
+
+/* ??? */
+ for (list = devs.next; ; list = list->next) {
+ if (list == &devs)
+ return -ENODEV;
+ s = list_entry(list, rme96xx_info, devs);
+ if (!((s->dspnum[devnum] ^ minor) & ~0xf))
+ break;
+ }
+ VALIDATE_STATE(s);
+/* ??? */
+
+ dma = &s->dma[devnum];
+ f->private_data = dma;
+ /* wait for device to become free */
+ down(&s->dma[devnum].open_sem);
+ while (dma->open_mode & f->f_mode) {
+ if (f->f_flags & O_NONBLOCK) {
+ up(&dma->open_sem);
+ return -EBUSY;
+ }
+ add_wait_queue(&dma->open_wait, &wait);
+ __set_current_state(TASK_INTERRUPTIBLE);
+ up(&dma->open_sem);
+ schedule();
+ remove_wait_queue(&dma->open_wait, &wait);
+ set_current_state(TASK_RUNNING);
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ down(&dma->open_sem);
+ }
+
+ COMM ("hardware open")
+
+ if (!s->dma[devnum].opened) rme96xx_dmabuf_init(dma->s,dma,dma->inoffset,dma->outoffset);
+
+ s->dma[devnum].open_mode |= (f->f_mode & (FMODE_READ | FMODE_WRITE));
+ s->dma[devnum].opened = 1;
+ up(&s->dma[devnum].open_sem);
+
+ DBG(printk("device num %d open finished\n",devnum));
+ return 0;
+}
+
+static int rme96xx_release(struct inode *in, struct file *file)
+{
+ struct dmabuf * dma = (struct dmabuf*) file->private_data;
+ int hwp;
+ DBG(printk(__FUNCTION__"\n"));
+
+ COMM ("draining")
+ if (dma->open_mode & FMODE_WRITE) {
+#if 0 /* Why doesn't this work with some cards ?? */
+ hwp = rme96xx_gethwptr(dma->s,0);
+ while (rme96xx_getospace(dma,hwp)) {
+ interruptible_sleep_on(&(dma->wait));
+ hwp = rme96xx_gethwptr(dma->s,0);
+ }
+#endif
+ rme96xx_clearbufs(dma);
+ }
+
+ dma->open_mode &= (~file->f_mode) & (FMODE_READ|FMODE_WRITE);
+
+ if (!(dma->open_mode & (FMODE_READ|FMODE_WRITE))) {
+ dma->opened = 0;
+ if (dma->s->started) rme96xx_startcard(dma->s,1);
+ }
+
+ wake_up(&dma->open_wait);
+ up(&dma->open_sem);
+
+ return 0;
+}
+
+
+static ssize_t rme96xx_write(struct file *file, const char *buffer,
+ size_t count, loff_t *ppos)
+{
+ struct dmabuf *dma = (struct dmabuf *)file->private_data;
+ ssize_t ret = 0;
+ int cnt; /* number of bytes from "buffer" that will/can be used */
+ int hop = count/dma->outchannels;
+ int hwp;
+ int exact = (file->f_flags & O_NONBLOCK);
+
+
+ if(dma == NULL || (dma->s) == NULL)
+ return -ENXIO;
+
+ if (ppos != &file->f_pos)
+ return -ESPIPE;
+
+ if (dma->mmapped || !dma->opened)
+ return -ENXIO;
+
+ if (!access_ok(VERIFY_READ, buffer, count))
+ return -EFAULT;
+
+ if (! (dma->open_mode & FMODE_WRITE))
+ return -ENXIO;
+
+ if (!dma->s->started) rme96xx_startcard(dma->s,exact);
+ hwp = rme96xx_gethwptr(dma->s,0);
+
+ if(!(dma->started)){
+ COMM ("first write")
+
+ dma->readptr = hwp;
+ dma->writeptr = hwp;
+ dma->started = 1;
+ COMM ("first write done")
+ }
+
+ while (count > 0) {
+ cnt = rme96xx_getospace(dma,hwp);
+ cnt>>=dma->formatshift;
+ cnt*=dma->outchannels;
+ if (cnt > count)
+ cnt = count;
+
+ if (cnt != 0) {
+ if (rme96xx_copyfromuser(dma,buffer,cnt,hop))
+ return ret ? ret : -EFAULT;
+ count -= cnt;
+ buffer += cnt;
+ ret += cnt;
+ if (count == 0) return ret;
+ }
+ if (file->f_flags & O_NONBLOCK)
+ return ret ? ret : -EAGAIN;
+
+ if ((hwp - dma->writeptr) <= 0) {
+ interruptible_sleep_on(&(dma->wait));
+
+ if (signal_pending(current))
+ return ret ? ret : -ERESTARTSYS;
+ }
+
+ hwp = rme96xx_gethwptr(dma->s,exact);
+
+ }; /* count > 0 */
+
+ return ret;
+}
+
+static ssize_t rme96xx_read(struct file *file, char *buffer,size_t count, loff_t *ppos)
+{
+ struct dmabuf *dma = (struct dmabuf *)file->private_data;
+ ssize_t ret = 0;
+ int cnt;
+ int hop = count/dma->inchannels;
+ int hwp;
+ int exact = (file->f_flags & O_NONBLOCK);
+
+
+ if(dma == NULL || (dma->s) == NULL)
+ return -ENXIO;
+
+ if (ppos != &file->f_pos)
+ return -ESPIPE;
+
+ if (dma->mmapped || !dma->opened)
+ return -ENXIO;
+
+ if (!access_ok(VERIFY_WRITE, buffer, count))
+ return -EFAULT;
+
+ if (! (dma->open_mode & FMODE_READ))
+ return -ENXIO;
+
+ if (count > ((dma->s->fragsize*dma->inchannels)>>dma->formatshift))
+ return -EFAULT;
+
+ if (!dma->s->started) rme96xx_startcard(dma->s,exact);
+ hwp = rme96xx_gethwptr(dma->s,0);
+
+ if(!(dma->started)){
+ COMM ("first read")
+
+ dma->writeptr = hwp;
+ dma->readptr = hwp;
+ dma->started = 1;
+ }
+
+ while (count > 0) {
+ cnt = rme96xx_getispace(dma,hwp);
+ cnt>>=dma->formatshift;
+ cnt*=dma->inchannels;
+
+ if (cnt > count)
+ cnt = count;
+
+ if (cnt != 0) {
+
+ if (rme96xx_copytouser(dma,buffer,cnt,hop))
+ return ret ? ret : -EFAULT;
+
+ count -= cnt;
+ buffer += cnt;
+ ret += cnt;
+ if (count == 0) return ret;
+ }
+ if (file->f_flags & O_NONBLOCK)
+ return ret ? ret : -EAGAIN;
+
+ if ((hwp - dma->readptr) <= 0) {
+ interruptible_sleep_on(&(dma->wait));
+
+ if (signal_pending(current))
+ return ret ? ret : -ERESTARTSYS;
+ }
+ hwp = rme96xx_gethwptr(dma->s,exact);
+
+ }; /* count > 0 */
+
+ return ret;
+}
+
+static int rm96xx_mmap(struct file *file, struct vm_area_struct *vma) {
+ struct dmabuf *dma = (struct dmabuf *)file->private_data;
+ rme96xx_info* s = dma->s;
+ unsigned long size;
+
+ VALIDATE_STATE(s);
+ lock_kernel();
+
+ if (vma->vm_pgoff != 0) {
+ unlock_kernel();
+ return -EINVAL;
+ }
+ size = vma->vm_end - vma->vm_start;
+ if (size > RME96xx_DMA_MAX_SIZE) {
+ unlock_kernel();
+ return -EINVAL;
+ }
+
+
+ if (vma->vm_flags & VM_WRITE) {
+ if (!s->started) rme96xx_startcard(s,1);
+
+ if (remap_page_range(vma->vm_start, virt_to_phys(s->playbuf + dma->outoffset*RME96xx_DMA_MAX_SIZE), size, vma->vm_page_prot)) {
+ unlock_kernel();
+ return -EAGAIN;
+ }
+ }
+ else if (vma->vm_flags & VM_READ) {
+ if (!s->started) rme96xx_startcard(s,1);
+ if (remap_page_range(vma->vm_start, virt_to_phys(s->playbuf + dma->inoffset*RME96xx_DMA_MAX_SIZE), size, vma->vm_page_prot)) {
+ unlock_kernel();
+ return -EAGAIN;
+ }
+ } else {
+ unlock_kernel();
+ return -EINVAL;
+ }
+
+
+/* this is the mapping */
+
+ dma->mmapped = 1;
+ unlock_kernel();
+ return 0;
+}
+
+static unsigned int rme96xx_poll(struct file *file, struct poll_table_struct *wait)
+{
+ struct dmabuf *dma = (struct dmabuf *)file->private_data;
+ rme96xx_info* s = dma->s;
+ unsigned int mask = 0;
+ unsigned int hwp,cnt;
+
+ DBG(printk("rme96xx poll_wait ...\n"));
+ VALIDATE_STATE(s);
+
+ if (!s->started) {
+ mask |= POLLOUT | POLLWRNORM;
+ }
+ poll_wait(file, &dma->wait, wait);
+
+ hwp = rme96xx_gethwptr(dma->s,0);
+
+ DBG(printk("rme96xx poll: ..cnt %d > %d\n",cnt,s->fragsize));
+
+ cnt = rme96xx_getispace(dma,hwp);
+
+ if (file->f_mode & FMODE_READ)
+ if (cnt > 0)
+ mask |= POLLIN | POLLRDNORM;
+
+
+
+ cnt = rme96xx_getospace(dma,hwp);
+
+ if (file->f_mode & FMODE_WRITE)
+ if (cnt > 0)
+ mask |= POLLOUT | POLLWRNORM;
+
+
+// printk("rme96xx poll_wait ...%d > %d\n",rme96xx_getospace(dma,hwp),rme96xx_getispace(dma,hwp));
+
+ return mask;
+}
+
+
+static struct file_operations rme96xx_audio_fops = {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+ owner: THIS_MODULE,
+#endif
+ read: rme96xx_read,
+ write: rme96xx_write,
+ poll: rme96xx_poll,
+ ioctl: rme96xx_ioctl,
+ mmap: rm96xx_mmap,
+ open: rme96xx_open,
+ release: rme96xx_release
+};
+
+static int rme96xx_mixer_open(struct inode *inode, struct file *file)
+{
+ int minor = MINOR(inode->i_rdev);
+ struct list_head *list;
+ rme96xx_info *s;
+
+ COMM ("mixer open");
+
+ for (list = devs.next; ; list = list->next) {
+ if (list == &devs)
+ return -ENODEV;
+ s = list_entry(list, rme96xx_info, devs);
+ if (s->mixer== minor)
+ break;
+ }
+ VALIDATE_STATE(s);
+ file->private_data = s;
+
+ COMM ("mixer opened")
+ return 0;
+}
+
+static int rme96xx_mixer_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ rme96xx_info *s = (rme96xx_info *)file->private_data;
+ u32 status;
+
+ status = readl(s->iobase + RME96xx_status_register);
+
+ VALIDATE_STATE(s);
+ if (cmd == SOUND_MIXER_PRIVATE1) {
+ rme_mixer mixer;
+ copy_from_user(&mixer,(void*)arg,sizeof(mixer));
+
+ if (file->f_mode & FMODE_WRITE) {
+ s->dma[mixer.devnr].outoffset = mixer.o_offset;
+ s->dma[mixer.devnr].inoffset = mixer.i_offset;
+ }
+
+ mixer.o_offset = s->dma[mixer.devnr].outoffset;
+ mixer.i_offset = s->dma[mixer.devnr].inoffset;
+
+ return copy_to_user((void *)arg, &mixer, sizeof(mixer)) ? -EFAULT : 0;
+ }
+ if (cmd == SOUND_MIXER_PRIVATE2) {
+ return put_user(status, (int *)arg);
+ }
+ if (cmd == SOUND_MIXER_PRIVATE3) {
+ u32 control;
+ copy_from_user(&control,(void*)arg,sizeof(control));
+ if (file->f_mode & FMODE_WRITE) {
+ s->control_register = control;
+ writel(control,s->iobase + RME96xx_control_register);
+ }
+
+ return put_user(s->control_register, (int *)arg);
+ }
+ return -1;
+}
+
+
+
+static int rme96xx_mixer_release(struct inode *inode, struct file *file)
+{
+ return 0;
+}
+
+static /*const*/ struct file_operations rme96xx_mixer_fops = {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+ owner: THIS_MODULE,
+#endif
+ ioctl: rme96xx_mixer_ioctl,
+ open: rme96xx_mixer_open,
+ release: rme96xx_mixer_release,
+};
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)