Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 5206 insertions, 0 deletions

diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c
new file mode 100644
index 00000000000..12efbf0fab5
--- /dev/null
+++ b/sound/pci/rme9652/hdsp.c
@@ -0,0 +1,5206 @@
+/*
+ *   ALSA driver for RME Hammerfall DSP audio interface(s)
+ *
+ *      Copyright (c) 2002  Paul Davis
+ *                          Marcus Andersson
+ *                          Thomas Charbonnel
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; 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
+ *
+ */
+
+#include <sound/driver.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <linux/firmware.h>
+#include <linux/moduleparam.h>
+
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/pcm.h>
+#include <sound/info.h>
+#include <sound/asoundef.h>
+#include <sound/rawmidi.h>
+#include <sound/hwdep.h>
+#include <sound/initval.h>
+#include <sound/hdsp.h>
+
+#include <asm/byteorder.h>
+#include <asm/current.h>
+#include <asm/io.h>
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
+static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for RME Hammerfall DSP interface.");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for RME Hammerfall DSP interface.");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable/disable specific Hammerfall DSP soundcards.");
+MODULE_AUTHOR("Paul Davis <paul@linuxaudiosystems.com>, Marcus Andersson, Thomas Charbonnel <thomas@undata.org>");
+MODULE_DESCRIPTION("RME Hammerfall DSP");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{RME Hammerfall-DSP},"
+	        "{RME HDSP-9652},"
+		"{RME HDSP-9632}}");
+
+#define HDSP_MAX_CHANNELS        26
+#define HDSP_MAX_DS_CHANNELS     14
+#define HDSP_MAX_QS_CHANNELS     8
+#define DIGIFACE_SS_CHANNELS     26
+#define DIGIFACE_DS_CHANNELS     14
+#define MULTIFACE_SS_CHANNELS    18
+#define MULTIFACE_DS_CHANNELS    14
+#define H9652_SS_CHANNELS        26
+#define H9652_DS_CHANNELS        14
+/* This does not include possible Analog Extension Boards
+   AEBs are detected at card initialization
+*/
+#define H9632_SS_CHANNELS	 12
+#define H9632_DS_CHANNELS	 8
+#define H9632_QS_CHANNELS	 4
+
+/* Write registers. These are defined as byte-offsets from the iobase value.
+ */
+#define HDSP_resetPointer               0
+#define HDSP_outputBufferAddress	32
+#define HDSP_inputBufferAddress		36
+#define HDSP_controlRegister		64
+#define HDSP_interruptConfirmation	96
+#define HDSP_outputEnable	  	128
+#define HDSP_control2Reg		256
+#define HDSP_midiDataOut0  		352
+#define HDSP_midiDataOut1  		356
+#define HDSP_fifoData  			368
+#define HDSP_inputEnable	 	384
+
+/* Read registers. These are defined as byte-offsets from the iobase value
+ */
+
+#define HDSP_statusRegister    0
+#define HDSP_timecode        128
+#define HDSP_status2Register 192
+#define HDSP_midiDataOut0    352
+#define HDSP_midiDataOut1    356
+#define HDSP_midiDataIn0     360
+#define HDSP_midiDataIn1     364
+#define HDSP_midiStatusOut0  384
+#define HDSP_midiStatusOut1  388
+#define HDSP_midiStatusIn0   392
+#define HDSP_midiStatusIn1   396
+#define HDSP_fifoStatus      400
+
+/* the meters are regular i/o-mapped registers, but offset
+   considerably from the rest. the peak registers are reset
+   when read; the least-significant 4 bits are full-scale counters; 
+   the actual peak value is in the most-significant 24 bits.
+*/
+
+#define HDSP_playbackPeakLevel  4096  /* 26 * 32 bit values */
+#define HDSP_inputPeakLevel     4224  /* 26 * 32 bit values */
+#define HDSP_outputPeakLevel    4352  /* (26+2) * 32 bit values */
+#define HDSP_playbackRmsLevel   4612  /* 26 * 64 bit values */
+#define HDSP_inputRmsLevel      4868  /* 26 * 64 bit values */
+
+
+/* This is for H9652 cards
+   Peak values are read downward from the base
+   Rms values are read upward
+   There are rms values for the outputs too
+   26*3 values are read in ss mode
+   14*3 in ds mode, with no gap between values
+*/
+#define HDSP_9652_peakBase	7164	
+#define HDSP_9652_rmsBase	4096
+
+/* c.f. the hdsp_9632_meters_t struct */
+#define HDSP_9632_metersBase	4096
+
+#define HDSP_IO_EXTENT     7168
+
+/* control2 register bits */
+
+#define HDSP_TMS                0x01
+#define HDSP_TCK                0x02
+#define HDSP_TDI                0x04
+#define HDSP_JTAG               0x08
+#define HDSP_PWDN               0x10
+#define HDSP_PROGRAM	        0x020
+#define HDSP_CONFIG_MODE_0	0x040
+#define HDSP_CONFIG_MODE_1	0x080
+#define HDSP_VERSION_BIT	0x100
+#define HDSP_BIGENDIAN_MODE     0x200
+#define HDSP_RD_MULTIPLE        0x400
+#define HDSP_9652_ENABLE_MIXER  0x800
+#define HDSP_TDO                0x10000000
+
+#define HDSP_S_PROGRAM     	(HDSP_PROGRAM|HDSP_CONFIG_MODE_0)
+#define HDSP_S_LOAD		(HDSP_PROGRAM|HDSP_CONFIG_MODE_1)
+
+/* Control Register bits */
+
+#define HDSP_Start                (1<<0)  /* start engine */
+#define HDSP_Latency0             (1<<1)  /* buffer size = 2^n where n is defined by Latency{2,1,0} */
+#define HDSP_Latency1             (1<<2)  /* [ see above ] */
+#define HDSP_Latency2             (1<<3)  /* [ see above ] */
+#define HDSP_ClockModeMaster      (1<<4)  /* 1=Master, 0=Slave/Autosync */
+#define HDSP_AudioInterruptEnable (1<<5)  /* what do you think ? */
+#define HDSP_Frequency0           (1<<6)  /* 0=44.1kHz/88.2kHz/176.4kHz 1=48kHz/96kHz/192kHz */
+#define HDSP_Frequency1           (1<<7)  /* 0=32kHz/64kHz/128kHz */
+#define HDSP_DoubleSpeed          (1<<8)  /* 0=normal speed, 1=double speed */
+#define HDSP_SPDIFProfessional    (1<<9)  /* 0=consumer, 1=professional */
+#define HDSP_SPDIFEmphasis        (1<<10) /* 0=none, 1=on */
+#define HDSP_SPDIFNonAudio        (1<<11) /* 0=off, 1=on */
+#define HDSP_SPDIFOpticalOut      (1<<12) /* 1=use 1st ADAT connector for SPDIF, 0=do not */
+#define HDSP_SyncRef2             (1<<13) 
+#define HDSP_SPDIFInputSelect0    (1<<14) 
+#define HDSP_SPDIFInputSelect1    (1<<15) 
+#define HDSP_SyncRef0             (1<<16) 
+#define HDSP_SyncRef1             (1<<17)
+#define HDSP_AnalogExtensionBoard (1<<18) /* For H9632 cards */ 
+#define HDSP_XLRBreakoutCable     (1<<20) /* For H9632 cards */
+#define HDSP_Midi0InterruptEnable (1<<22)
+#define HDSP_Midi1InterruptEnable (1<<23)
+#define HDSP_LineOut              (1<<24)
+#define HDSP_ADGain0		  (1<<25) /* From here : H9632 specific */
+#define HDSP_ADGain1		  (1<<26)
+#define HDSP_DAGain0		  (1<<27)
+#define HDSP_DAGain1		  (1<<28)
+#define HDSP_PhoneGain0		  (1<<29)
+#define HDSP_PhoneGain1		  (1<<30)
+#define HDSP_QuadSpeed	  	  (1<<31)
+
+#define HDSP_ADGainMask       (HDSP_ADGain0|HDSP_ADGain1)
+#define HDSP_ADGainMinus10dBV  HDSP_ADGainMask
+#define HDSP_ADGainPlus4dBu   (HDSP_ADGain0)
+#define HDSP_ADGainLowGain     0
+
+#define HDSP_DAGainMask         (HDSP_DAGain0|HDSP_DAGain1)
+#define HDSP_DAGainHighGain      HDSP_DAGainMask
+#define HDSP_DAGainPlus4dBu     (HDSP_DAGain0)
+#define HDSP_DAGainMinus10dBV    0
+
+#define HDSP_PhoneGainMask      (HDSP_PhoneGain0|HDSP_PhoneGain1)
+#define HDSP_PhoneGain0dB        HDSP_PhoneGainMask
+#define HDSP_PhoneGainMinus6dB  (HDSP_PhoneGain0)
+#define HDSP_PhoneGainMinus12dB  0
+
+#define HDSP_LatencyMask    (HDSP_Latency0|HDSP_Latency1|HDSP_Latency2)
+#define HDSP_FrequencyMask  (HDSP_Frequency0|HDSP_Frequency1|HDSP_DoubleSpeed|HDSP_QuadSpeed)
+
+#define HDSP_SPDIFInputMask    (HDSP_SPDIFInputSelect0|HDSP_SPDIFInputSelect1)
+#define HDSP_SPDIFInputADAT1    0
+#define HDSP_SPDIFInputCoaxial (HDSP_SPDIFInputSelect0)
+#define HDSP_SPDIFInputCdrom   (HDSP_SPDIFInputSelect1)
+#define HDSP_SPDIFInputAES     (HDSP_SPDIFInputSelect0|HDSP_SPDIFInputSelect1)
+
+#define HDSP_SyncRefMask        (HDSP_SyncRef0|HDSP_SyncRef1|HDSP_SyncRef2)
+#define HDSP_SyncRef_ADAT1       0
+#define HDSP_SyncRef_ADAT2      (HDSP_SyncRef0)
+#define HDSP_SyncRef_ADAT3      (HDSP_SyncRef1)
+#define HDSP_SyncRef_SPDIF      (HDSP_SyncRef0|HDSP_SyncRef1)
+#define HDSP_SyncRef_WORD       (HDSP_SyncRef2)
+#define HDSP_SyncRef_ADAT_SYNC  (HDSP_SyncRef0|HDSP_SyncRef2)
+
+/* Sample Clock Sources */
+
+#define HDSP_CLOCK_SOURCE_AUTOSYNC           0
+#define HDSP_CLOCK_SOURCE_INTERNAL_32KHZ     1
+#define HDSP_CLOCK_SOURCE_INTERNAL_44_1KHZ   2
+#define HDSP_CLOCK_SOURCE_INTERNAL_48KHZ     3
+#define HDSP_CLOCK_SOURCE_INTERNAL_64KHZ     4
+#define HDSP_CLOCK_SOURCE_INTERNAL_88_2KHZ   5
+#define HDSP_CLOCK_SOURCE_INTERNAL_96KHZ     6
+#define HDSP_CLOCK_SOURCE_INTERNAL_128KHZ    7
+#define HDSP_CLOCK_SOURCE_INTERNAL_176_4KHZ  8
+#define HDSP_CLOCK_SOURCE_INTERNAL_192KHZ    9
+
+/* Preferred sync reference choices - used by "pref_sync_ref" control switch */
+
+#define HDSP_SYNC_FROM_WORD      0
+#define HDSP_SYNC_FROM_SPDIF     1
+#define HDSP_SYNC_FROM_ADAT1     2
+#define HDSP_SYNC_FROM_ADAT_SYNC 3
+#define HDSP_SYNC_FROM_ADAT2     4
+#define HDSP_SYNC_FROM_ADAT3     5
+
+/* SyncCheck status */
+
+#define HDSP_SYNC_CHECK_NO_LOCK 0
+#define HDSP_SYNC_CHECK_LOCK    1
+#define HDSP_SYNC_CHECK_SYNC	2
+
+/* AutoSync references - used by "autosync_ref" control switch */
+
+#define HDSP_AUTOSYNC_FROM_WORD      0
+#define HDSP_AUTOSYNC_FROM_ADAT_SYNC 1
+#define HDSP_AUTOSYNC_FROM_SPDIF     2
+#define HDSP_AUTOSYNC_FROM_NONE	     3
+#define HDSP_AUTOSYNC_FROM_ADAT1     4
+#define HDSP_AUTOSYNC_FROM_ADAT2     5
+#define HDSP_AUTOSYNC_FROM_ADAT3     6
+
+/* Possible sources of S/PDIF input */
+
+#define HDSP_SPDIFIN_OPTICAL  0	/* optical  (ADAT1) */
+#define HDSP_SPDIFIN_COAXIAL  1	/* coaxial (RCA) */
+#define HDSP_SPDIFIN_INTERNAL 2	/* internal (CDROM) */
+#define HDSP_SPDIFIN_AES      3 /* xlr for H9632 (AES)*/
+
+#define HDSP_Frequency32KHz    HDSP_Frequency0
+#define HDSP_Frequency44_1KHz  HDSP_Frequency1
+#define HDSP_Frequency48KHz    (HDSP_Frequency1|HDSP_Frequency0)
+#define HDSP_Frequency64KHz    (HDSP_DoubleSpeed|HDSP_Frequency0)
+#define HDSP_Frequency88_2KHz  (HDSP_DoubleSpeed|HDSP_Frequency1)
+#define HDSP_Frequency96KHz    (HDSP_DoubleSpeed|HDSP_Frequency1|HDSP_Frequency0)
+/* For H9632 cards */
+#define HDSP_Frequency128KHz   (HDSP_QuadSpeed|HDSP_DoubleSpeed|HDSP_Frequency0)
+#define HDSP_Frequency176_4KHz (HDSP_QuadSpeed|HDSP_DoubleSpeed|HDSP_Frequency1)
+#define HDSP_Frequency192KHz   (HDSP_QuadSpeed|HDSP_DoubleSpeed|HDSP_Frequency1|HDSP_Frequency0)
+
+#define hdsp_encode_latency(x)       (((x)<<1) & HDSP_LatencyMask)
+#define hdsp_decode_latency(x)       (((x) & HDSP_LatencyMask)>>1)
+
+#define hdsp_encode_spdif_in(x) (((x)&0x3)<<14)
+#define hdsp_decode_spdif_in(x) (((x)>>14)&0x3)
+
+/* Status Register bits */
+
+#define HDSP_audioIRQPending    (1<<0)
+#define HDSP_Lock2              (1<<1)     /* this is for Digiface and H9652 */
+#define HDSP_spdifFrequency3	HDSP_Lock2 /* this is for H9632 only */
+#define HDSP_Lock1              (1<<2)
+#define HDSP_Lock0              (1<<3)
+#define HDSP_SPDIFSync          (1<<4)
+#define HDSP_TimecodeLock       (1<<5)
+#define HDSP_BufferPositionMask 0x000FFC0 /* Bit 6..15 : h/w buffer pointer */
+#define HDSP_Sync2              (1<<16)
+#define HDSP_Sync1              (1<<17)
+#define HDSP_Sync0              (1<<18)
+#define HDSP_DoubleSpeedStatus  (1<<19)
+#define HDSP_ConfigError        (1<<20)
+#define HDSP_DllError           (1<<21)
+#define HDSP_spdifFrequency0    (1<<22)
+#define HDSP_spdifFrequency1    (1<<23)
+#define HDSP_spdifFrequency2    (1<<24)
+#define HDSP_SPDIFErrorFlag     (1<<25)
+#define HDSP_BufferID           (1<<26)
+#define HDSP_TimecodeSync       (1<<27)
+#define HDSP_AEBO          	(1<<28) /* H9632 specific Analog Extension Boards */
+#define HDSP_AEBI		(1<<29) /* 0 = present, 1 = absent */
+#define HDSP_midi0IRQPending    (1<<30) 
+#define HDSP_midi1IRQPending    (1<<31)
+
+#define HDSP_spdifFrequencyMask    (HDSP_spdifFrequency0|HDSP_spdifFrequency1|HDSP_spdifFrequency2)
+
+#define HDSP_spdifFrequency32KHz   (HDSP_spdifFrequency0)
+#define HDSP_spdifFrequency44_1KHz (HDSP_spdifFrequency1)
+#define HDSP_spdifFrequency48KHz   (HDSP_spdifFrequency0|HDSP_spdifFrequency1)
+
+#define HDSP_spdifFrequency64KHz   (HDSP_spdifFrequency2)
+#define HDSP_spdifFrequency88_2KHz (HDSP_spdifFrequency0|HDSP_spdifFrequency2)
+#define HDSP_spdifFrequency96KHz   (HDSP_spdifFrequency2|HDSP_spdifFrequency1)
+
+/* This is for H9632 cards */
+#define HDSP_spdifFrequency128KHz   HDSP_spdifFrequencyMask
+#define HDSP_spdifFrequency176_4KHz HDSP_spdifFrequency3
+#define HDSP_spdifFrequency192KHz   (HDSP_spdifFrequency3|HDSP_spdifFrequency0)
+
+/* Status2 Register bits */
+
+#define HDSP_version0     (1<<0)
+#define HDSP_version1     (1<<1)
+#define HDSP_version2     (1<<2)
+#define HDSP_wc_lock      (1<<3)
+#define HDSP_wc_sync      (1<<4)
+#define HDSP_inp_freq0    (1<<5)
+#define HDSP_inp_freq1    (1<<6)
+#define HDSP_inp_freq2    (1<<7)
+#define HDSP_SelSyncRef0  (1<<8)
+#define HDSP_SelSyncRef1  (1<<9)
+#define HDSP_SelSyncRef2  (1<<10)
+
+#define HDSP_wc_valid (HDSP_wc_lock|HDSP_wc_sync)
+
+#define HDSP_systemFrequencyMask (HDSP_inp_freq0|HDSP_inp_freq1|HDSP_inp_freq2)
+#define HDSP_systemFrequency32   (HDSP_inp_freq0)
+#define HDSP_systemFrequency44_1 (HDSP_inp_freq1)
+#define HDSP_systemFrequency48   (HDSP_inp_freq0|HDSP_inp_freq1)
+#define HDSP_systemFrequency64   (HDSP_inp_freq2)
+#define HDSP_systemFrequency88_2 (HDSP_inp_freq0|HDSP_inp_freq2)
+#define HDSP_systemFrequency96   (HDSP_inp_freq1|HDSP_inp_freq2)
+/* FIXME : more values for 9632 cards ? */
+
+#define HDSP_SelSyncRefMask        (HDSP_SelSyncRef0|HDSP_SelSyncRef1|HDSP_SelSyncRef2)
+#define HDSP_SelSyncRef_ADAT1      0
+#define HDSP_SelSyncRef_ADAT2      (HDSP_SelSyncRef0)
+#define HDSP_SelSyncRef_ADAT3      (HDSP_SelSyncRef1)
+#define HDSP_SelSyncRef_SPDIF      (HDSP_SelSyncRef0|HDSP_SelSyncRef1)
+#define HDSP_SelSyncRef_WORD       (HDSP_SelSyncRef2)
+#define HDSP_SelSyncRef_ADAT_SYNC  (HDSP_SelSyncRef0|HDSP_SelSyncRef2)
+
+/* Card state flags */
+
+#define HDSP_InitializationComplete  (1<<0)
+#define HDSP_FirmwareLoaded	     (1<<1)
+#define HDSP_FirmwareCached	     (1<<2)
+
+/* FIFO wait times, defined in terms of 1/10ths of msecs */
+
+#define HDSP_LONG_WAIT	 5000
+#define HDSP_SHORT_WAIT  30
+
+#define UNITY_GAIN                       32768
+#define MINUS_INFINITY_GAIN              0
+
+#ifndef PCI_VENDOR_ID_XILINX
+#define PCI_VENDOR_ID_XILINX		0x10ee
+#endif
+#ifndef PCI_DEVICE_ID_XILINX_HAMMERFALL_DSP
+#define PCI_DEVICE_ID_XILINX_HAMMERFALL_DSP 0x3fc5
+#endif
+
+/* the size of a substream (1 mono data stream) */
+
+#define HDSP_CHANNEL_BUFFER_SAMPLES  (16*1024)
+#define HDSP_CHANNEL_BUFFER_BYTES    (4*HDSP_CHANNEL_BUFFER_SAMPLES)
+
+/* the size of the area we need to allocate for DMA transfers. the
+   size is the same regardless of the number of channels - the 
+   Multiface still uses the same memory area.
+
+   Note that we allocate 1 more channel than is apparently needed
+   because the h/w seems to write 1 byte beyond the end of the last
+   page. Sigh.
+*/
+
+#define HDSP_DMA_AREA_BYTES ((HDSP_MAX_CHANNELS+1) * HDSP_CHANNEL_BUFFER_BYTES)
+#define HDSP_DMA_AREA_KILOBYTES (HDSP_DMA_AREA_BYTES/1024)
+
+/* use hotplug firmeare loader? */
+#if defined(CONFIG_FW_LOADER) || defined(CONFIG_FW_LOADER_MODULE)
+#ifndef HDSP_USE_HWDEP_LOADER
+#define HDSP_FW_LOADER
+#endif
+#endif
+
+typedef struct _hdsp             hdsp_t;
+typedef struct _hdsp_midi        hdsp_midi_t;
+typedef struct _hdsp_9632_meters hdsp_9632_meters_t;
+
+struct _hdsp_9632_meters {
+    u32 input_peak[16];
+    u32 playback_peak[16];
+    u32 output_peak[16];
+    u32 xxx_peak[16];
+    u32 padding[64];
+    u32 input_rms_low[16];
+    u32 playback_rms_low[16];
+    u32 output_rms_low[16];
+    u32 xxx_rms_low[16];
+    u32 input_rms_high[16];
+    u32 playback_rms_high[16];
+    u32 output_rms_high[16];
+    u32 xxx_rms_high[16];
+};
+
+struct _hdsp_midi {
+    hdsp_t                  *hdsp;
+    int                      id;
+    snd_rawmidi_t           *rmidi;
+    snd_rawmidi_substream_t *input;
+    snd_rawmidi_substream_t *output;
+    char                     istimer; /* timer in use */
+    struct timer_list	     timer;
+    spinlock_t               lock;
+    int			     pending;
+};
+
+struct _hdsp {
+	spinlock_t            lock;
+	snd_pcm_substream_t  *capture_substream;
+	snd_pcm_substream_t  *playback_substream;
+        hdsp_midi_t           midi[2];
+	struct tasklet_struct midi_tasklet;
+	int		      use_midi_tasklet;
+	int                   precise_ptr;
+	u32                   control_register;	     /* cached value */
+	u32                   control2_register;     /* cached value */
+	u32                   creg_spdif;
+	u32                   creg_spdif_stream;
+	char                 *card_name;	     /* digiface/multiface */
+	HDSP_IO_Type          io_type;               /* ditto, but for code use */
+        unsigned short        firmware_rev;
+	unsigned short	      state;		     /* stores state bits */
+	u32		      firmware_cache[24413]; /* this helps recover from accidental iobox power failure */
+	size_t                period_bytes; 	     /* guess what this is */
+	unsigned char	      max_channels;
+	unsigned char	      qs_in_channels;	     /* quad speed mode for H9632 */
+	unsigned char         ds_in_channels;
+	unsigned char         ss_in_channels;	    /* different for multiface/digiface */
+	unsigned char	      qs_out_channels;	    
+	unsigned char         ds_out_channels;
+	unsigned char         ss_out_channels;
+
+	struct snd_dma_buffer capture_dma_buf;
+	struct snd_dma_buffer playback_dma_buf;
+	unsigned char        *capture_buffer;	    /* suitably aligned address */
+	unsigned char        *playback_buffer;	    /* suitably aligned address */
+
+	pid_t                 capture_pid;
+	pid_t                 playback_pid;
+	int                   running;
+	int                   system_sample_rate;
+	char                 *channel_map;
+	int                   dev;
+	int                   irq;
+	unsigned long         port;
+        void __iomem         *iobase;
+	snd_card_t           *card;
+	snd_pcm_t            *pcm;
+	snd_hwdep_t          *hwdep;
+	struct pci_dev       *pci;
+	snd_kcontrol_t       *spdif_ctl;
+        unsigned short        mixer_matrix[HDSP_MATRIX_MIXER_SIZE];
+};
+
+/* These tables map the ALSA channels 1..N to the channels that we
+   need to use in order to find the relevant channel buffer. RME
+   refer to this kind of mapping as between "the ADAT channel and
+   the DMA channel." We index it using the logical audio channel,
+   and the value is the DMA channel (i.e. channel buffer number)
+   where the data for that channel can be read/written from/to.
+*/
+
+static char channel_map_df_ss[HDSP_MAX_CHANNELS] = {
+	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
+	18, 19, 20, 21, 22, 23, 24, 25
+};
+
+static char channel_map_mf_ss[HDSP_MAX_CHANNELS] = { /* Multiface */
+	/* Analog */
+	0, 1, 2, 3, 4, 5, 6, 7, 
+	/* ADAT 2 */
+	16, 17, 18, 19, 20, 21, 22, 23, 
+	/* SPDIF */
+	24, 25,
+	-1, -1, -1, -1, -1, -1, -1, -1
+};
+
+static char channel_map_ds[HDSP_MAX_CHANNELS] = {
+	/* ADAT channels are remapped */
+	1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23,
+	/* channels 12 and 13 are S/PDIF */
+	24, 25,
+	/* others don't exist */
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
+};
+
+static char channel_map_H9632_ss[HDSP_MAX_CHANNELS] = {
+	/* ADAT channels */
+	0, 1, 2, 3, 4, 5, 6, 7,
+	/* SPDIF */
+	8, 9,
+	/* Analog */
+	10, 11, 
+	/* AO4S-192 and AI4S-192 extension boards */
+	12, 13, 14, 15,
+	/* others don't exist */
+	-1, -1, -1, -1, -1, -1, -1, -1, 
+	-1, -1
+};
+
+static char channel_map_H9632_ds[HDSP_MAX_CHANNELS] = {
+	/* ADAT */
+	1, 3, 5, 7,
+	/* SPDIF */
+	8, 9,
+	/* Analog */
+	10, 11, 
+	/* AO4S-192 and AI4S-192 extension boards */
+	12, 13, 14, 15,
+	/* others don't exist */
+	-1, -1, -1, -1, -1, -1, -1, -1,
+	-1, -1, -1, -1, -1, -1
+};
+
+static char channel_map_H9632_qs[HDSP_MAX_CHANNELS] = {
+	/* ADAT is disabled in this mode */
+	/* SPDIF */
+	8, 9,
+	/* Analog */
+	10, 11,
+	/* AO4S-192 and AI4S-192 extension boards */
+	12, 13, 14, 15,
+	/* others don't exist */
+	-1, -1, -1, -1, -1, -1, -1, -1,
+	-1, -1, -1, -1, -1, -1, -1, -1,
+	-1, -1
+};
+
+static int snd_hammerfall_get_buffer(struct pci_dev *pci, struct snd_dma_buffer *dmab, size_t size)
+{
+	dmab->dev.type = SNDRV_DMA_TYPE_DEV;
+	dmab->dev.dev = snd_dma_pci_data(pci);
+	if (! snd_dma_get_reserved_buf(dmab, snd_dma_pci_buf_id(pci))) {
+		if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
+					size, dmab) < 0)
+			return -ENOMEM;
+	}
+	return 0;
+}
+
+static void snd_hammerfall_free_buffer(struct snd_dma_buffer *dmab, struct pci_dev *pci)
+{
+	if (dmab->area)
+		snd_dma_reserve_buf(dmab, snd_dma_pci_buf_id(pci));
+}
+
+
+static struct pci_device_id snd_hdsp_ids[] = {
+	{
+		.vendor = PCI_VENDOR_ID_XILINX,
+		.device = PCI_DEVICE_ID_XILINX_HAMMERFALL_DSP, 
+		.subvendor = PCI_ANY_ID,
+		.subdevice = PCI_ANY_ID,
+	}, /* RME Hammerfall-DSP */
+	{ 0, },
+};
+
+MODULE_DEVICE_TABLE(pci, snd_hdsp_ids);
+
+/* prototypes */
+static int snd_hdsp_create_alsa_devices(snd_card_t *card, hdsp_t *hdsp);
+static int snd_hdsp_create_pcm(snd_card_t *card, hdsp_t *hdsp);
+static int snd_hdsp_enable_io (hdsp_t *hdsp);
+static void snd_hdsp_initialize_midi_flush (hdsp_t *hdsp);
+static void snd_hdsp_initialize_channels (hdsp_t *hdsp);
+static int hdsp_fifo_wait(hdsp_t *hdsp, int count, int timeout);
+static int hdsp_autosync_ref(hdsp_t *hdsp);
+static int snd_hdsp_set_defaults(hdsp_t *hdsp);
+static void snd_hdsp_9652_enable_mixer (hdsp_t *hdsp);
+
+static int hdsp_playback_to_output_key (hdsp_t *hdsp, int in, int out)
+{
+	switch (hdsp->firmware_rev) {
+	case 0xa:
+		return (64 * out) + (32 + (in));
+	case 0x96:
+	case 0x97:
+		return (32 * out) + (16 + (in));
+	default:
+		return (52 * out) + (26 + (in));
+	}
+}
+
+static int hdsp_input_to_output_key (hdsp_t *hdsp, int in, int out)
+{
+	switch (hdsp->firmware_rev) {
+	case 0xa:
+		return (64 * out) + in;
+	case 0x96:
+	case 0x97:
+		return (32 * out) + in;
+	default:
+		return (52 * out) + in;
+	}
+}
+
+static void hdsp_write(hdsp_t *hdsp, int reg, int val)
+{
+	writel(val, hdsp->iobase + reg);
+}
+
+static unsigned int hdsp_read(hdsp_t *hdsp, int reg)
+{
+	return readl (hdsp->iobase + reg);
+}
+
+static int hdsp_check_for_iobox (hdsp_t *hdsp)
+{
+
+	if (hdsp->io_type == H9652 || hdsp->io_type == H9632) return 0;
+	if (hdsp_read (hdsp, HDSP_statusRegister) & HDSP_ConfigError) {
+		snd_printk ("Hammerfall-DSP: no Digiface or Multiface connected!\n");
+		hdsp->state &= ~HDSP_FirmwareLoaded;
+		return -EIO;
+	}
+	return 0;
+
+}
+
+static int snd_hdsp_load_firmware_from_cache(hdsp_t *hdsp) {
+
+	int i;
+	unsigned long flags;
+
+	if ((hdsp_read (hdsp, HDSP_statusRegister) & HDSP_DllError) != 0) {
+		
+		snd_printk ("Hammerfall-DSP: loading firmware\n");
+
+		hdsp_write (hdsp, HDSP_control2Reg, HDSP_S_PROGRAM);
+		hdsp_write (hdsp, HDSP_fifoData, 0);
+		
+		if (hdsp_fifo_wait (hdsp, 0, HDSP_LONG_WAIT)) {
+			snd_printk ("Hammerfall-DSP: timeout waiting for download preparation\n");
+			return -EIO;
+		}
+		
+		hdsp_write (hdsp, HDSP_control2Reg, HDSP_S_LOAD);
+		
+		for (i = 0; i < 24413; ++i) {
+			hdsp_write(hdsp, HDSP_fifoData, hdsp->firmware_cache[i]);
+			if (hdsp_fifo_wait (hdsp, 127, HDSP_LONG_WAIT)) {
+				snd_printk ("Hammerfall-DSP: timeout during firmware loading\n");
+				return -EIO;
+			}
+		}
+
+		if ((1000 / HZ) < 3000) {
+			set_current_state(TASK_UNINTERRUPTIBLE);
+			schedule_timeout((3000 * HZ + 999) / 1000);
+		} else {
+			mdelay(3000);
+		}
+		
+		if (hdsp_fifo_wait (hdsp, 0, HDSP_LONG_WAIT)) {
+			snd_printk ("Hammerfall-DSP: timeout at end of firmware loading\n");
+		    	return -EIO;
+		}
+
+#ifdef SNDRV_BIG_ENDIAN
+		hdsp->control2_register = HDSP_BIGENDIAN_MODE;
+#else
+		hdsp->control2_register = 0;
+#endif
+		hdsp_write (hdsp, HDSP_control2Reg, hdsp->control2_register);
+		snd_printk ("Hammerfall-DSP: finished firmware loading\n");
+		
+	}
+	if (hdsp->state & HDSP_InitializationComplete) {
+		snd_printk("Hammerfall-DSP: firmware loaded from cache, restoring defaults\n");
+		spin_lock_irqsave(&hdsp->lock, flags);
+		snd_hdsp_set_defaults(hdsp);
+		spin_unlock_irqrestore(&hdsp->lock, flags); 
+	}
+	
+	hdsp->state |= HDSP_FirmwareLoaded;
+
+	return 0;
+}
+
+static int hdsp_get_iobox_version (hdsp_t *hdsp)
+{
+	if ((hdsp_read (hdsp, HDSP_statusRegister) & HDSP_DllError) != 0) {
+	
+		hdsp_write (hdsp, HDSP_control2Reg, HDSP_PROGRAM);
+		hdsp_write (hdsp, HDSP_fifoData, 0);
+		if (hdsp_fifo_wait (hdsp, 0, HDSP_SHORT_WAIT) < 0) {
+			return -EIO;
+		}
+
+		hdsp_write (hdsp, HDSP_control2Reg, HDSP_S_LOAD);
+		hdsp_write (hdsp, HDSP_fifoData, 0);
+
+		if (hdsp_fifo_wait (hdsp, 0, HDSP_SHORT_WAIT)) {
+			hdsp->io_type = Multiface;
+			hdsp_write (hdsp, HDSP_control2Reg, HDSP_VERSION_BIT);
+			hdsp_write (hdsp, HDSP_control2Reg, HDSP_S_LOAD);
+			hdsp_fifo_wait (hdsp, 0, HDSP_SHORT_WAIT);
+		} else {
+			hdsp->io_type = Digiface;
+		} 
+	} else {
+		/* firmware was already loaded, get iobox type */
+		if (hdsp_read(hdsp, HDSP_status2Register) & HDSP_version1) {
+			hdsp->io_type = Multiface;
+		} else {
+			hdsp->io_type = Digiface;
+		}
+	}
+	return 0;
+}
+
+
+static int hdsp_check_for_firmware (hdsp_t *hdsp)
+{
+	if (hdsp->io_type == H9652 || hdsp->io_type == H9632) return 0;
+	if ((hdsp_read (hdsp, HDSP_statusRegister) & HDSP_DllError) != 0) {
+		snd_printk("Hammerfall-DSP: firmware not present.\n");
+		hdsp->state &= ~HDSP_FirmwareLoaded;
+		return -EIO;
+	}
+	return 0;
+}
+
+
+static int hdsp_fifo_wait(hdsp_t *hdsp, int count, int timeout)
+{    
+	int i;
+
+	/* the fifoStatus registers reports on how many words
+	   are available in the command FIFO.
+	*/
+	
+	for (i = 0; i < timeout; i++) {
+
+		if ((int)(hdsp_read (hdsp, HDSP_fifoStatus) & 0xff) <= count)
+			return 0;
+
+		/* not very friendly, but we only do this during a firmware
+		   load and changing the mixer, so we just put up with it.
+		*/
+
+		udelay (100);
+	}
+
+	snd_printk ("Hammerfall-DSP: wait for FIFO status <= %d failed after %d iterations\n",
+		    count, timeout);
+	return -1;
+}
+
+static int hdsp_read_gain (hdsp_t *hdsp, unsigned int addr)
+{
+	if (addr >= HDSP_MATRIX_MIXER_SIZE) {
+		return 0;
+	}
+	return hdsp->mixer_matrix[addr];
+}
+
+static int hdsp_write_gain(hdsp_t *hdsp, unsigned int addr, unsigned short data)
+{
+	unsigned int ad;
+
+	if (addr >= HDSP_MATRIX_MIXER_SIZE)
+		return -1;
+	
+	if (hdsp->io_type == H9652 || hdsp->io_type == H9632) {
+
+		/* from martin bjornsen:
+		   
+		   "You can only write dwords to the
+		   mixer memory which contain two
+		   mixer values in the low and high
+		   word. So if you want to change
+		   value 0 you have to read value 1
+		   from the cache and write both to
+		   the first dword in the mixer
+		   memory."
+		*/
+
+		if (hdsp->io_type == H9632 && addr >= 512) {
+			return 0;
+		}
+
+		if (hdsp->io_type == H9652 && addr >= 1352) {
+			return 0;
+		}
+
+		hdsp->mixer_matrix[addr] = data;
+
+		
+		/* `addr' addresses a 16-bit wide address, but
+		   the address space accessed via hdsp_write
+		   uses byte offsets. put another way, addr
+		   varies from 0 to 1351, but to access the
+		   corresponding memory location, we need
+		   to access 0 to 2703 ...
+		*/
+		ad = addr/2;
+	
+		hdsp_write (hdsp, 4096 + (ad*4), 
+			    (hdsp->mixer_matrix[(addr&0x7fe)+1] << 16) + 
+			    hdsp->mixer_matrix[addr&0x7fe]);
+		
+		return 0;
+
+	} else {
+
+		ad = (addr << 16) + data;
+		
+		if (hdsp_fifo_wait(hdsp, 127, HDSP_LONG_WAIT)) {
+			return -1;
+		}
+
+		hdsp_write (hdsp, HDSP_fifoData, ad);
+		hdsp->mixer_matrix[addr] = data;
+
+	}
+
+	return 0;
+}
+
+static int snd_hdsp_use_is_exclusive(hdsp_t *hdsp)
+{
+	unsigned long flags;
+	int ret = 1;
+
+	spin_lock_irqsave(&hdsp->lock, flags);
+	if ((hdsp->playback_pid != hdsp->capture_pid) &&
+	    (hdsp->playback_pid >= 0) && (hdsp->capture_pid >= 0)) {
+		ret = 0;
+	}
+	spin_unlock_irqrestore(&hdsp->lock, flags);
+	return ret;
+}
+
+static int hdsp_external_sample_rate (hdsp_t *hdsp)
+{
+	unsigned int status2 = hdsp_read(hdsp, HDSP_status2Register);
+	unsigned int rate_bits = status2 & HDSP_systemFrequencyMask;
+
+	switch (rate_bits) {
+	case HDSP_systemFrequency32:   return 32000;
+	case HDSP_systemFrequency44_1: return 44100;
+	case HDSP_systemFrequency48:   return 48000;
+	case HDSP_systemFrequency64:   return 64000;
+	case HDSP_systemFrequency88_2: return 88200;
+	case HDSP_systemFrequency96:   return 96000;
+	default:
+		return 0;
+	}
+}
+
+static int hdsp_spdif_sample_rate(hdsp_t *hdsp)
+{
+	unsigned int status = hdsp_read(hdsp, HDSP_statusRegister);
+	unsigned int rate_bits = (status & HDSP_spdifFrequencyMask);
+
+	if (status & HDSP_SPDIFErrorFlag) {
+		return 0;
+	}
+	
+	switch (rate_bits) {
+	case HDSP_spdifFrequency32KHz: return 32000;
+	case HDSP_spdifFrequency44_1KHz: return 44100;
+	case HDSP_spdifFrequency48KHz: return 48000;
+	case HDSP_spdifFrequency64KHz: return 64000;
+	case HDSP_spdifFrequency88_2KHz: return 88200;
+	case HDSP_spdifFrequency96KHz: return 96000;
+	case HDSP_spdifFrequency128KHz: 
+		if (hdsp->io_type == H9632) return 128000;
+		break;
+	case HDSP_spdifFrequency176_4KHz: 
+		if (hdsp->io_type == H9632) return 176400;
+		break;
+	case HDSP_spdifFrequency192KHz: 
+		if (hdsp->io_type == H9632) return 192000;
+		break;
+	default:
+		break;
+	}
+	snd_printk ("Hammerfall-DSP: unknown spdif frequency status; bits = 0x%x, status = 0x%x\n", rate_bits, status);
+	return 0;
+}
+
+static void hdsp_compute_period_size(hdsp_t *hdsp)
+{
+	hdsp->period_bytes = 1 << ((hdsp_decode_latency(hdsp->control_register) + 8));
+}
+
+static snd_pcm_uframes_t hdsp_hw_pointer(hdsp_t *hdsp)
+{
+	int position;
+
+	position = hdsp_read(hdsp, HDSP_statusRegister);
+
+	if (!hdsp->precise_ptr) {
+		return (position & HDSP_BufferID) ? (hdsp->period_bytes / 4) : 0;
+	}
+
+	position &= HDSP_BufferPositionMask;
+	position /= 4;
+	position &= (hdsp->period_bytes/2) - 1;
+	return position;
+}
+
+static void hdsp_reset_hw_pointer(hdsp_t *hdsp)
+{
+	hdsp_write (hdsp, HDSP_resetPointer, 0);
+}
+
+static void hdsp_start_audio(hdsp_t *s)
+{
+	s->control_register |= (HDSP_AudioInterruptEnable | HDSP_Start);
+	hdsp_write(s, HDSP_controlRegister, s->control_register);
+}
+
+static void hdsp_stop_audio(hdsp_t *s)
+{
+	s->control_register &= ~(HDSP_Start | HDSP_AudioInterruptEnable);
+	hdsp_write(s, HDSP_controlRegister, s->control_register);
+}
+
+static void hdsp_silence_playback(hdsp_t *hdsp)
+{
+	memset(hdsp->playback_buffer, 0, HDSP_DMA_AREA_BYTES);
+}
+
+static int hdsp_set_interrupt_interval(hdsp_t *s, unsigned int frames)
+{
+	int n;
+
+	spin_lock_irq(&s->lock);
+
+	frames >>= 7;
+	n = 0;
+	while (frames) {
+		n++;
+		frames >>= 1;
+	}
+
+	s->control_register &= ~HDSP_LatencyMask;
+	s->control_register |= hdsp_encode_latency(n);
+
+	hdsp_write(s, HDSP_controlRegister, s->control_register);
+
+	hdsp_compute_period_size(s);
+
+	spin_unlock_irq(&s->lock);
+
+	return 0;
+}
+
+static int hdsp_set_rate(hdsp_t *hdsp, int rate, int called_internally)
+{
+	int reject_if_open = 0;
+	int current_rate;
+	int rate_bits;
+
+	/* ASSUMPTION: hdsp->lock is either held, or
+	   there is no need for it (e.g. during module
+	   initialization).
+	*/
+	
+	if (!(hdsp->control_register & HDSP_ClockModeMaster)) {	
+		if (called_internally) {
+			/* request from ctl or card initialization */
+			snd_printk("Hammerfall-DSP: device is not running as a clock master: cannot set sample rate.\n");
+			return -1;
+		} else {		
+			/* hw_param request while in AutoSync mode */
+			int external_freq = hdsp_external_sample_rate(hdsp);
+			int spdif_freq = hdsp_spdif_sample_rate(hdsp);
+		
+			if ((spdif_freq == external_freq*2) && (hdsp_autosync_ref(hdsp) >= HDSP_AUTOSYNC_FROM_ADAT1)) {
+				snd_printk("Hammerfall-DSP: Detected ADAT in double speed mode\n");
+			} else if (hdsp->io_type == H9632 && (spdif_freq == external_freq*4) && (hdsp_autosync_ref(hdsp) >= HDSP_AUTOSYNC_FROM_ADAT1)) {
+				snd_printk("Hammerfall-DSP: Detected ADAT in quad speed mode\n");			
+			} else if (rate != external_freq) {
+				snd_printk("Hammerfall-DSP: No AutoSync source for requested rate\n");
+				return -1;
+			}		
+		}	
+	}
+
+	current_rate = hdsp->system_sample_rate;
+
+	/* Changing from a "single speed" to a "double speed" rate is
+	   not allowed if any substreams are open. This is because
+	   such a change causes a shift in the location of 
+	   the DMA buffers and a reduction in the number of available
+	   buffers. 
+
+	   Note that a similar but essentially insoluble problem
+	   exists for externally-driven rate changes. All we can do
+	   is to flag rate changes in the read/write routines.  */
+
+	if (rate > 96000 && hdsp->io_type != H9632) {
+		return -EINVAL;
+	}
+	
+	switch (rate) {
+	case 32000:
+		if (current_rate > 48000) {
+			reject_if_open = 1;
+		}
+		rate_bits = HDSP_Frequency32KHz;
+		break;
+	case 44100:
+		if (current_rate > 48000) {
+			reject_if_open = 1;
+		}
+		rate_bits = HDSP_Frequency44_1KHz;
+		break;
+	case 48000:
+		if (current_rate > 48000) {
+			reject_if_open = 1;
+		}
+		rate_bits = HDSP_Frequency48KHz;
+		break;
+	case 64000:
+		if (current_rate <= 48000 || current_rate > 96000) {
+			reject_if_open = 1;
+		}
+		rate_bits = HDSP_Frequency64KHz;
+		break;
+	case 88200:
+		if (current_rate <= 48000 || current_rate > 96000) {
+			reject_if_open = 1;
+		}
+		rate_bits = HDS