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fix: move RTL-SDR to userspace

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daniel
2026-08-29 10:02:32 +02:00
parent b1f1cfe32b
commit 5cd5c2e6be
35 changed files with 1922 additions and 1592 deletions
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programs/include/Api/Syscall.hpp
+57 -37
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@@ -191,16 +191,16 @@ namespace montauk::abi {
static constexpr uint64_t SYS_BTBONDS = 138;
static constexpr uint64_t SYS_BTFORGET = 139;
/* Sdr.hpp -- software-defined radio receive API */
static constexpr uint64_t SYS_SDR_COUNT = 140; // number of receivers
static constexpr uint64_t SYS_SDR_INFO = 141; // (index, SdrDeviceInfo*)
static constexpr uint64_t SYS_SDR_OPEN = 142; // (index) -> handle
static constexpr uint64_t SYS_SDR_CLOSE = 143; // (handle)
static constexpr uint64_t SYS_SDR_START = 144; // (handle) begin streaming
static constexpr uint64_t SYS_SDR_STOP = 145; // (handle) stop streaming
static constexpr uint64_t SYS_SDR_READ = 146; // (handle, buf, len) -> bytes
static constexpr uint64_t SYS_SDR_SETPARAM = 147; // (handle, param, value)
static constexpr uint64_t SYS_SDR_GETPARAM = 148; // (handle, param) -> value
/* Reserved: former SDR API. Kept unavailable to preserve ABI numbering. */
static constexpr uint64_t SYS_RESERVED_140 = 140;
static constexpr uint64_t SYS_RESERVED_141 = 141;
static constexpr uint64_t SYS_RESERVED_142 = 142;
static constexpr uint64_t SYS_RESERVED_143 = 143;
static constexpr uint64_t SYS_RESERVED_144 = 144;
static constexpr uint64_t SYS_RESERVED_145 = 145;
static constexpr uint64_t SYS_RESERVED_146 = 146;
static constexpr uint64_t SYS_RESERVED_147 = 147;
static constexpr uint64_t SYS_RESERVED_148 = 148;
// CPU power/thermal status
static constexpr uint64_t SYS_POWERINFO = 149; // (PowerInfo*) -> 0, -1 unsupported
@@ -239,20 +239,27 @@ namespace montauk::abi {
static constexpr uint64_t SYS_SETENVIRON = 172;
static constexpr uint64_t SYS_SPAWN_ENV = 173;
/* Generic userspace USB interface access */
static constexpr uint64_t SYS_USB_LIST = 178;
static constexpr uint64_t SYS_USB_CLAIM = 179;
static constexpr uint64_t SYS_USB_CLOSE = 180;
static constexpr uint64_t SYS_USB_CONTROL = 181;
static constexpr uint64_t SYS_USB_BULK_IN_START = 182;
static constexpr uint64_t SYS_USB_BULK_IN_STOP = 183;
static constexpr uint64_t SYS_USB_BULK_IN_READ = 184;
static constexpr uint64_t SYS_LOG_WRITE = 176; // (logMessage) -> 0
static constexpr uint64_t SYS_TERMINAL_ATTACHED = 177; // () -> 1 when connected to a userspace terminal
// Tunable parameters (for SYS_SDR_SETPARAM / SYS_SDR_GETPARAM).
static constexpr int SDR_PARAM_FREQ = 0; // center frequency, Hz
static constexpr int SDR_PARAM_SAMPLE_RATE = 1; // sample rate, Hz
static constexpr int SDR_PARAM_GAIN_MODE = 2; // 0 = auto/AGC, 1 = manual
static constexpr int SDR_PARAM_GAIN = 3; // tuner gain, tenths of dB
static constexpr int SDR_PARAM_FREQ_CORR = 4; // frequency correction, ppm
static constexpr int SDR_PARAM_AGC = 5; // demod digital AGC, 0/1
static constexpr int SDR_PARAM_DIRECT_SAMP = 6; // direct sampling: 0=off,1=I,2=Q
// Sample formats reported in SdrDeviceInfo.sampleFormat.
static constexpr uint8_t SDR_FORMAT_CU8 = 0; // 8-bit unsigned interleaved I/Q
static constexpr int USB_ERR_INVALID = -1;
static constexpr int USB_ERR_BUSY = -2;
static constexpr int USB_ERR_DISCONNECTED = -3;
static constexpr int USB_ERR_UNSUPPORTED = -4;
static constexpr int USB_ERR_IO = -5;
static constexpr int USB_ERR_NO_RESOURCES = -6;
static constexpr int USB_ERR_NOT_FOUND = -7;
static constexpr int USB_ERR_KERNEL_BOUND = -8;
// Graceful power-off request actions (SYS_POWER_REQUEST). The desktop posts
// a pending action and exits; login.elf reads it, runs the shutdown stages,
@@ -576,23 +583,36 @@ namespace montauk::abi {
uint8_t _pad[2];
};
// Software-defined radio receiver description (returned by SYS_SDR_INFO).
struct SdrDeviceInfo {
char name[64]; // e.g. "Realtek RTL2832U"
char tuner[32]; // e.g. "Rafael Micro R820T2"
char serial[32]; // device serial / bus location
uint64_t freqMin; // minimum tunable center frequency, Hz
uint64_t freqMax; // maximum tunable center frequency, Hz
uint32_t sampleRateMin; // minimum sample rate, Hz
uint32_t sampleRateMax; // maximum sample rate, Hz
uint32_t numGains; // number of discrete tuner gain steps
int32_t gains[32]; // available gains, tenths of dB
uint8_t sampleFormat; // SDR_FORMAT_*
uint8_t present; // 1 if the underlying hardware is connected
uint8_t streaming; // 1 if currently delivering samples
uint8_t _pad;
uint32_t _pad2;
};
struct UsbInterfaceInfo {
uint8_t slotId;
uint8_t portId;
uint8_t speed;
uint8_t interfaceNumber;
uint16_t vendorId;
uint16_t productId;
uint8_t deviceClass;
uint8_t interfaceClass;
uint8_t interfaceSubClass;
uint8_t interfaceProtocol;
uint8_t bulkInEndpoint;
uint8_t bulkOutEndpoint;
uint16_t bulkInMaxPacket;
uint16_t bulkOutMaxPacket;
uint8_t kernelDriverBound;
uint8_t claimed;
uint8_t _reserved[4];
} __attribute__((packed));
struct UsbControlRequest {
uint8_t requestType;
uint8_t request;
uint16_t value;
uint16_t index;
uint16_t length;
} __attribute__((packed));
static_assert(sizeof(UsbInterfaceInfo) == 24);
static_assert(sizeof(UsbControlRequest) == 8);
// Wi-Fi security suites reported in WifiNetwork.security.
static constexpr uint8_t WIFI_SEC_OPEN = 0;