61b8cf0222
Doing accesses without quadlet alignment is a bad idea because the firmware's byte-swapping would garble the data; clarify this in the documentation. Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
371 lines
12 KiB
C
371 lines
12 KiB
C
#ifndef SOUND_FIREWIRE_DICE_INTERFACE_H_INCLUDED
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#define SOUND_FIREWIRE_DICE_INTERFACE_H_INCLUDED
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/*
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* DICE device interface definitions
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*/
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/*
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* Generally, all registers can be read like memory, i.e., with quadlet read or
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* block read transactions with at least quadlet-aligned offset and length.
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* Writes are not allowed except where noted; quadlet-sized registers must be
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* written with a quadlet write transaction.
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*
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* All values are in big endian. The DICE firmware runs on a little-endian CPU
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* and just byte-swaps _all_ quadlets on the bus, so values without endianness
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* (e.g. strings) get scrambled and must be byte-swapped again by the driver.
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*/
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/*
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* Streaming is handled by the "DICE driver" interface. Its registers are
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* located in this private address space.
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*/
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#define DICE_PRIVATE_SPACE 0xffffe0000000uLL
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/*
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* The registers are organized in several sections, which are organized
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* separately to allow them to be extended individually. Whether a register is
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* supported can be detected by checking its offset against its section's size.
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*
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* The section offset values are relative to DICE_PRIVATE_SPACE; the offset/
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* size values are measured in quadlets. Read-only.
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*/
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#define DICE_GLOBAL_OFFSET 0x00
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#define DICE_GLOBAL_SIZE 0x04
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#define DICE_TX_OFFSET 0x08
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#define DICE_TX_SIZE 0x0c
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#define DICE_RX_OFFSET 0x10
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#define DICE_RX_SIZE 0x14
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#define DICE_EXT_SYNC_OFFSET 0x18
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#define DICE_EXT_SYNC_SIZE 0x1c
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#define DICE_UNUSED2_OFFSET 0x20
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#define DICE_UNUSED2_SIZE 0x24
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/*
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* Global settings.
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*/
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/*
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* Stores the full 64-bit address (node ID and offset in the node's address
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* space) where the device will send notifications. Must be changed with
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* a compare/swap transaction by the owner. This register is automatically
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* cleared on a bus reset.
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*/
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#define GLOBAL_OWNER 0x000
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#define OWNER_NO_OWNER 0xffff000000000000uLL
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#define OWNER_NODE_SHIFT 48
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/*
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* A bitmask with asynchronous events; read-only. When any event(s) happen,
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* the bits of previous events are cleared, and the value of this register is
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* also written to the address stored in the owner register.
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*/
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#define GLOBAL_NOTIFICATION 0x008
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/* Some registers in the Rx/Tx sections may have changed. */
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#define NOTIFY_RX_CFG_CHG 0x00000001
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#define NOTIFY_TX_CFG_CHG 0x00000002
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/* Lock status of the current clock source may have changed. */
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#define NOTIFY_LOCK_CHG 0x00000010
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/* Write to the clock select register has been finished. */
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#define NOTIFY_CLOCK_ACCEPTED 0x00000020
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/* Lock status of some clock source has changed. */
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#define NOTIFY_EXT_STATUS 0x00000040
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/* Other bits may be used for device-specific events. */
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/*
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* A name that can be customized for each device; read/write. Padded with zero
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* bytes. Quadlets are byte-swapped. The encoding is whatever the host driver
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* happens to be using.
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*/
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#define GLOBAL_NICK_NAME 0x00c
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#define NICK_NAME_SIZE 64
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/*
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* The current sample rate and clock source; read/write. Whether a clock
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* source or sample rate is supported is device-specific; the internal clock
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* source is always available. Low/mid/high = up to 48/96/192 kHz. This
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* register can be changed even while streams are running.
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*/
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#define GLOBAL_CLOCK_SELECT 0x04c
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#define CLOCK_SOURCE_MASK 0x000000ff
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#define CLOCK_SOURCE_AES1 0x00000000
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#define CLOCK_SOURCE_AES2 0x00000001
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#define CLOCK_SOURCE_AES3 0x00000002
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#define CLOCK_SOURCE_AES4 0x00000003
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#define CLOCK_SOURCE_AES_ANY 0x00000004
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#define CLOCK_SOURCE_ADAT 0x00000005
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#define CLOCK_SOURCE_TDIF 0x00000006
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#define CLOCK_SOURCE_WC 0x00000007
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#define CLOCK_SOURCE_ARX1 0x00000008
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#define CLOCK_SOURCE_ARX2 0x00000009
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#define CLOCK_SOURCE_ARX3 0x0000000a
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#define CLOCK_SOURCE_ARX4 0x0000000b
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#define CLOCK_SOURCE_INTERNAL 0x0000000c
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#define CLOCK_RATE_MASK 0x0000ff00
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#define CLOCK_RATE_32000 0x00000000
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#define CLOCK_RATE_44100 0x00000100
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#define CLOCK_RATE_48000 0x00000200
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#define CLOCK_RATE_88200 0x00000300
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#define CLOCK_RATE_96000 0x00000400
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#define CLOCK_RATE_176400 0x00000500
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#define CLOCK_RATE_192000 0x00000600
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#define CLOCK_RATE_ANY_LOW 0x00000700
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#define CLOCK_RATE_ANY_MID 0x00000800
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#define CLOCK_RATE_ANY_HIGH 0x00000900
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#define CLOCK_RATE_NONE 0x00000a00
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#define CLOCK_RATE_SHIFT 8
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/*
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* Enable streaming; read/write. Writing a non-zero value (re)starts all
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* streams that have a valid iso channel set; zero stops all streams. The
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* streams' parameters must be configured before starting. This register is
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* automatically cleared on a bus reset.
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*/
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#define GLOBAL_ENABLE 0x050
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/*
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* Status of the sample clock; read-only.
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*/
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#define GLOBAL_STATUS 0x054
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/* The current clock source is locked. */
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#define STATUS_SOURCE_LOCKED 0x00000001
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/* The actual sample rate; CLOCK_RATE_32000-_192000 or _NONE. */
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#define STATUS_NOMINAL_RATE_MASK 0x0000ff00
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/*
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* Status of all clock sources; read-only.
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*/
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#define GLOBAL_EXTENDED_STATUS 0x058
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/*
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* The _LOCKED bits always show the current status; any change generates
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* a notification.
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*/
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#define EXT_STATUS_AES1_LOCKED 0x00000001
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#define EXT_STATUS_AES2_LOCKED 0x00000002
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#define EXT_STATUS_AES3_LOCKED 0x00000004
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#define EXT_STATUS_AES4_LOCKED 0x00000008
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#define EXT_STATUS_ADAT_LOCKED 0x00000010
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#define EXT_STATUS_TDIF_LOCKED 0x00000020
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#define EXT_STATUS_ARX1_LOCKED 0x00000040
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#define EXT_STATUS_ARX2_LOCKED 0x00000080
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#define EXT_STATUS_ARX3_LOCKED 0x00000100
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#define EXT_STATUS_ARX4_LOCKED 0x00000200
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#define EXT_STATUS_WC_LOCKED 0x00000400
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/*
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* The _SLIP bits do not generate notifications; a set bit indicates that an
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* error occurred since the last time when this register was read with
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* a quadlet read transaction.
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*/
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#define EXT_STATUS_AES1_SLIP 0x00010000
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#define EXT_STATUS_AES2_SLIP 0x00020000
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#define EXT_STATUS_AES3_SLIP 0x00040000
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#define EXT_STATUS_AES4_SLIP 0x00080000
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#define EXT_STATUS_ADAT_SLIP 0x00100000
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#define EXT_STATUS_TDIF_SLIP 0x00200000
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#define EXT_STATUS_ARX1_SLIP 0x00400000
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#define EXT_STATUS_ARX2_SLIP 0x00800000
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#define EXT_STATUS_ARX3_SLIP 0x01000000
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#define EXT_STATUS_ARX4_SLIP 0x02000000
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#define EXT_STATUS_WC_SLIP 0x04000000
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/*
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* The measured rate of the current clock source, in Hz; read-only.
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*/
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#define GLOBAL_SAMPLE_RATE 0x05c
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/*
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* The version of the DICE driver specification that this device conforms to;
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* read-only.
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*/
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#define GLOBAL_VERSION 0x060
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/* Some old firmware versions do not have the following global registers: */
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/*
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* Supported sample rates and clock sources; read-only.
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*/
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#define GLOBAL_CLOCK_CAPABILITIES 0x064
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#define CLOCK_CAP_RATE_32000 0x00000001
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#define CLOCK_CAP_RATE_44100 0x00000002
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#define CLOCK_CAP_RATE_48000 0x00000004
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#define CLOCK_CAP_RATE_88200 0x00000008
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#define CLOCK_CAP_RATE_96000 0x00000010
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#define CLOCK_CAP_RATE_176400 0x00000020
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#define CLOCK_CAP_RATE_192000 0x00000040
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#define CLOCK_CAP_SOURCE_AES1 0x00010000
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#define CLOCK_CAP_SOURCE_AES2 0x00020000
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#define CLOCK_CAP_SOURCE_AES3 0x00040000
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#define CLOCK_CAP_SOURCE_AES4 0x00080000
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#define CLOCK_CAP_SOURCE_AES_ANY 0x00100000
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#define CLOCK_CAP_SOURCE_ADAT 0x00200000
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#define CLOCK_CAP_SOURCE_TDIF 0x00400000
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#define CLOCK_CAP_SOURCE_WC 0x00800000
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#define CLOCK_CAP_SOURCE_ARX1 0x01000000
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#define CLOCK_CAP_SOURCE_ARX2 0x02000000
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#define CLOCK_CAP_SOURCE_ARX3 0x04000000
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#define CLOCK_CAP_SOURCE_ARX4 0x08000000
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#define CLOCK_CAP_SOURCE_INTERNAL 0x10000000
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/*
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* Names of all clock sources; read-only. Quadlets are byte-swapped. Names
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* are separated with one backslash, the list is terminated with two
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* backslashes. Unused clock sources are included.
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*/
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#define GLOBAL_CLOCK_SOURCE_NAMES 0x068
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#define CLOCK_SOURCE_NAMES_SIZE 256
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/*
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* Capture stream settings. This section includes the number/size registers
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* and the registers of all streams.
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*/
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/*
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* The number of supported capture streams; read-only.
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*/
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#define TX_NUMBER 0x000
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/*
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* The size of one stream's register block, in quadlets; read-only. The
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* registers of the first stream follow immediately afterwards; the registers
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* of the following streams are offset by this register's value.
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*/
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#define TX_SIZE 0x004
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/*
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* The isochronous channel number on which packets are sent, or -1 if the
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* stream is not to be used; read/write.
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*/
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#define TX_ISOCHRONOUS 0x008
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/*
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* The number of audio channels; read-only. There will be one quadlet per
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* channel; the first channel is the first quadlet in a data block.
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*/
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#define TX_NUMBER_AUDIO 0x00c
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/*
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* The number of MIDI ports, 0-8; read-only. If > 0, there will be one
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* additional quadlet in each data block, following the audio quadlets.
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*/
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#define TX_NUMBER_MIDI 0x010
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/*
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* The speed at which the packets are sent, SCODE_100-_400; read/write.
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*/
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#define TX_SPEED 0x014
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/*
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* Names of all audio channels; read-only. Quadlets are byte-swapped. Names
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* are separated with one backslash, the list is terminated with two
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* backslashes.
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*/
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#define TX_NAMES 0x018
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#define TX_NAMES_SIZE 256
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/*
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* Audio IEC60958 capabilities; read-only. Bitmask with one bit per audio
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* channel.
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*/
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#define TX_AC3_CAPABILITIES 0x118
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/*
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* Send audio data with IEC60958 label; read/write. Bitmask with one bit per
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* audio channel. This register can be changed even while the stream is
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* running.
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*/
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#define TX_AC3_ENABLE 0x11c
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/*
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* Playback stream settings. This section includes the number/size registers
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* and the registers of all streams.
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*/
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/*
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* The number of supported playback streams; read-only.
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*/
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#define RX_NUMBER 0x000
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/*
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* The size of one stream's register block, in quadlets; read-only. The
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* registers of the first stream follow immediately afterwards; the registers
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* of the following streams are offset by this register's value.
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*/
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#define RX_SIZE 0x004
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/*
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* The isochronous channel number on which packets are received, or -1 if the
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* stream is not to be used; read/write.
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*/
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#define RX_ISOCHRONOUS 0x008
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/*
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* Index of first quadlet to be interpreted; read/write. If > 0, that many
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* quadlets at the beginning of each data block will be ignored, and all the
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* audio and MIDI quadlets will follow.
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*/
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#define RX_SEQ_START 0x00c
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/*
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* The number of audio channels; read-only. There will be one quadlet per
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* channel.
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*/
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#define RX_NUMBER_AUDIO 0x010
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/*
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* The number of MIDI ports, 0-8; read-only. If > 0, there will be one
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* additional quadlet in each data block, following the audio quadlets.
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*/
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#define RX_NUMBER_MIDI 0x014
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/*
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* Names of all audio channels; read-only. Quadlets are byte-swapped. Names
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* are separated with one backslash, the list is terminated with two
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* backslashes.
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*/
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#define RX_NAMES 0x018
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#define RX_NAMES_SIZE 256
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/*
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* Audio IEC60958 capabilities; read-only. Bitmask with one bit per audio
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* channel.
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*/
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#define RX_AC3_CAPABILITIES 0x118
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/*
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* Receive audio data with IEC60958 label; read/write. Bitmask with one bit
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* per audio channel. This register can be changed even while the stream is
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* running.
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*/
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#define RX_AC3_ENABLE 0x11c
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/*
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* Extended synchronization information.
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* This section can be read completely with a block read request.
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*/
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/*
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* Current clock source; read-only.
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*/
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#define EXT_SYNC_CLOCK_SOURCE 0x000
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/*
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* Clock source is locked (boolean); read-only.
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*/
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#define EXT_SYNC_LOCKED 0x004
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/*
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* Current sample rate (CLOCK_RATE_* >> CLOCK_RATE_SHIFT), _32000-_192000 or
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* _NONE; read-only.
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*/
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#define EXT_SYNC_RATE 0x008
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/*
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* ADAT user data bits; read-only.
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*/
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#define EXT_SYNC_ADAT_USER_DATA 0x00c
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/* The data bits, if available. */
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#define ADAT_USER_DATA_MASK 0x0f
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/* The data bits are not available. */
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#define ADAT_USER_DATA_NO_DATA 0x10
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#endif
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