mirror of https://github.com/akuker/RASCSI.git
basic shared mem communication
This commit is contained in:
Tony Kuker
parent
33cd41b205
commit
4ec6424446
24
cpp/Makefile
24
cpp/Makefile
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@ -59,6 +59,7 @@ SCSIDUMP = scsidump
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SCSIMON = scsimon
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PISCSI_TEST = piscsi_test
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SCSILOOP = scsiloop
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SCSISIM = scsisim
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SYSTEMD_CONF = /etc/systemd/system/piscsi.service
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RSYSLOG_CONF = /etc/rsyslog.d/piscsi.conf
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@ -79,7 +80,8 @@ BIN_ALL = \
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$(BINDIR)/$(SCSICTL) \
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$(BINDIR)/$(SCSIMON) \
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$(BINDIR)/$(SCSIDUMP) \
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$(BINDIR)/$(SCSILOOP)
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$(BINDIR)/$(SCSILOOP) \
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$(BINDIR)/$(SCSISIM)
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SRC_PROTOC = piscsi_interface.proto
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@ -91,7 +93,8 @@ SRC_PROTOBUF = \
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SRC_SHARED = \
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shared/piscsi_version.cpp \
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shared/piscsi_util.cpp
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shared/piscsi_util.cpp \
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shared/shared_memory.cpp
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SRC_PISCSI_CORE = $(shell find ./piscsi -name '*.cpp')
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SRC_PISCSI_CORE += $(shell find ./controllers -name '*.cpp')
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@ -120,12 +123,15 @@ SRC_SCSILOOP = scsiloop.cpp
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SRC_SCSILOOP += $(shell find ./scsiloop -name '*.cpp')
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SRC_SCSILOOP += $(shell find ./hal -name '*.cpp')
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SRC_SCSISIM = scsisim.cpp
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SRC_SCSISIM += $(shell find ./scsisim -name '*.cpp')
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vpath %.h ./ ./shared ./controllers ./devices ./monitor ./hal \
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./hal/boards ./hal/pi_defs ./piscsi ./scsictl ./scsidump \
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./scsiloop
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./scsiloop ./scsisim
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vpath %.cpp ./ ./shared ./controllers ./devices ./monitor ./hal \
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./hal/boards ./hal/pi_defs ./piscsi ./scsictl ./scsidump \
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./scsiloop ./test
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./scsiloop ./scsisim ./test
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vpath %.o ./$(OBJDIR)
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vpath ./$(BINDIR)
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@ -138,6 +144,7 @@ OBJ_SCSIDUMP := $(addprefix $(OBJDIR)/,$(notdir $(SRC_SCSIDUMP:%.cpp=%.o)))
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OBJ_SCSIMON := $(addprefix $(OBJDIR)/,$(notdir $(SRC_SCSIMON:%.cpp=%.o)))
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OBJ_PISCSI_TEST := $(addprefix $(OBJDIR)/,$(notdir $(SRC_PISCSI_TEST:%.cpp=%.o)))
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OBJ_SCSILOOP := $(addprefix $(OBJDIR)/,$(notdir $(SRC_SCSILOOP:%.cpp=%.o)))
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OBJ_SCSISIM := $(addprefix $(OBJDIR)/,$(notdir $(SRC_SCSISIM:%.cpp=%.o)))
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OBJ_SHARED := $(addprefix $(OBJDIR)/,$(notdir $(SRC_SHARED:%.cpp=%.o)))
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OBJ_PROTOBUF := $(addprefix $(OBJDIR)/,$(notdir $(SRC_PROTOBUF:%.cpp=%.o)))
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OBJ_GENERATED := $(addprefix $(OBJDIR)/,$(notdir $(SRC_GENERATED:%.cpp=%.o)))
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@ -151,7 +158,7 @@ TEST_WRAPS = -Wl,--wrap=fopen64
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# The following will include all of the auto-generated dependency files (*.d)
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# if they exist. This will trigger a rebuild of a source file if a header changes
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ALL_DEPS := $(patsubst %.o,%.d,$(OBJ_PISCSI_CORE) $(OBJ_SCSICTL_CORE) $(OBJ_PISCSI) $(OBJ_SCSICTL) $(OBJ_SCSIDUMP) $(OBJ_SCSIMON) $(OBJ_SHARED) $(OBJ_PROTOBUF) $(OBJ_PISCSI_TEST) $(OBJ_SCSILOOP))
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ALL_DEPS := $(patsubst %.o,%.d,$(OBJ_PISCSI_CORE) $(OBJ_SCSICTL_CORE) $(OBJ_PISCSI) $(OBJ_SCSICTL) $(OBJ_SCSIDUMP) $(OBJ_SCSIMON) $(OBJ_SHARED) $(OBJ_PROTOBUF) $(OBJ_PISCSI_TEST) $(OBJ_SCSILOOP) $(OBJ_SCSISIM))
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-include $(ALL_DEPS)
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$(OBJDIR) $(BINDIR):
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@ -216,14 +223,18 @@ $(BINDIR)/$(PISCSI_TEST): $(SRC_GENERATED) $(OBJ_PISCSI_CORE) $(OBJ_SCSICTL_CORE
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$(BINDIR)/$(SCSILOOP): $(OBJ_SHARED) $(OBJ_SCSILOOP) | $(BINDIR)
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$(CXX) $(CXXFLAGS) -o $@ $(OBJ_SHARED) $(OBJ_SCSILOOP)
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$(BINDIR)/$(SCSISIM): $(OBJ_SHARED) $(OBJ_SCSISIM) | $(BINDIR)
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$(CXX) $(CXXFLAGS) -o $@ $(OBJ_SHARED) $(OBJ_SCSISIM)
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# Phony rules for building individual utilities
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.PHONY: $(PISCSI) $(SCSICTL) $(SCSIDUMP) $(SCSIMON) $(PISCSI_TEST) $(SCSILOOP)
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.PHONY: $(PISCSI) $(SCSICTL) $(SCSIDUMP) $(SCSIMON) $(PISCSI_TEST) $(SCSILOOP) $(SCSISIM)
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$(PISCSI) : $(BINDIR)/$(PISCSI)
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$(SCSICTL) : $(BINDIR)/$(SCSICTL)
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$(SCSIDUMP) : $(BINDIR)/$(SCSIDUMP)
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$(SCSIMON) : $(BINDIR)/$(SCSIMON)
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$(PISCSI_TEST): $(BINDIR)/$(PISCSI_TEST)
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$(SCSILOOP) : $(BINDIR)/$(SCSILOOP)
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$(SCSISIM) : $(BINDIR)/$(SCSISIM)
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## clean : Remove all of the object files, intermediate
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## compiler files and executable files
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@ -255,6 +266,7 @@ install: \
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$(USR_LOCAL_BIN)/$(SCSIMON) \
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$(USR_LOCAL_BIN)/$(SCSILOOP) \
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$(USR_LOCAL_BIN)/$(SCSIDUMP) \
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$(USR_LOCAL_BIN)/$(SCSISIM) \
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$(SYSTEMD_CONF) \
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$(RSYSLOG_CONF) \
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$(RSYSLOG_LOG)
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@ -23,6 +23,8 @@
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#include <sys/mman.h>
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#include <sys/time.h>
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#include "scsisim/scsisim_defs.h"
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using namespace std;
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bool GPIOBUS_Virtual::Init(mode_e mode)
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@ -30,33 +32,7 @@ bool GPIOBUS_Virtual::Init(mode_e mode)
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GPIO_FUNCTION_TRACE
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GPIOBUS::Init(mode);
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#ifdef SHARED_MEMORY_GPIO
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// Create a shared memory region that can be accessed as a virtual "SCSI bus"
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// mutual exclusion semaphore, mutex_sem with an initial value 0.
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if ((mutex_sem = sem_open(SHARED_MEM_MUTEX_NAME.c_str(), O_CREAT, 0660, 0)) == SEM_FAILED) {
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LOGERROR("Unable to open shared memory semaphore %s. Are you running as root?", SHARED_MEM_MUTEX_NAME.c_str());
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}
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// Get shared memory
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if ((fd_shm = shm_open(SHARED_MEM_NAME.c_str(), O_RDWR | O_CREAT | O_EXCL, 0660)) == -1) {
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LOGERROR("Unable to open shared memory %s. Are you running as root?", SHARED_MEM_NAME.c_str());
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sem_close(mutex_sem);
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}
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if (ftruncate(fd_shm, sizeof(uint32_t)) == -1) {
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LOGERROR("Unable to read shared memory");
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sem_close(mutex_sem);
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shm_unlink(SHARED_MEM_NAME.c_str());
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return false;
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}
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signals = static_cast<uint32_t *>(mmap(NULL, sizeof(uint32_t), PROT_READ | PROT_WRITE, MAP_SHARED, fd_shm, 0));
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if (static_cast<void *>(signals) == MAP_FAILED) {
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LOGERROR("Unabled to map shared memory");
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sem_close(mutex_sem);
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shm_unlink(SHARED_MEM_NAME.c_str());
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}
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#else
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signals = make_shared<uint32_t>(0);
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#endif
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signals = make_unique<SharedMemory>(SHARED_MEM_NAME);
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return true;
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}
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@ -81,12 +57,6 @@ void GPIOBUS_Virtual::Cleanup()
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PinConfig(pin, GPIO_INPUT);
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PullConfig(pin, GPIO_PULLNONE);
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}
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#ifdef SHARED_MEMORY_GPIO
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munmap(static_cast<void *>(signals), sizeof(uint32_t));
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shm_unlink(SHARED_MEM_NAME.c_str());
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sem_close(mutex_sem);
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#endif
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}
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void GPIOBUS_Virtual::Reset()
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@ -456,20 +426,7 @@ bool GPIOBUS_Virtual::GetSignal(int hw_pin) const
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{
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GPIO_FUNCTION_TRACE
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uint32_t signal_value = 0;
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#ifdef SHARED_MEMORY_GPIO
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if (sem_wait(mutex_sem) == -1) {
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LOGERROR("Unable to lock the shared memory")
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return false;
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}
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#endif
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signal_value = *signals;
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#ifdef SHARED_MEMORY_GPIO
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if (sem_post(mutex_sem) == -1) {
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LOGERROR("Unable to release the shared memory")
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return false;
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}
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#endif
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uint32_t signal_value = signals->get();
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return (signal_value >> hw_pin) & 1;
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}
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@ -509,25 +466,7 @@ void GPIOBUS_Virtual::PinSetSignal(int hw_pin, bool ast)
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if (hw_pin < 0) {
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return;
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}
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#ifdef SHARED_MEMORY_GPIO
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if (sem_wait(mutex_sem) == -1) {
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LOGERROR("Unable to lock the shared memory")
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return;
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}
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#endif
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if (ast) {
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// Set the "gpio" bit
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*signals |= 0x1 << hw_pin;
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} else {
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// Clear the "gpio" bit
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*signals ^= ~(0x1 << hw_pin);
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}
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#ifdef SHARED_MEMORY_GPIO
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if (sem_post(mutex_sem) == -1) {
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LOGERROR("Unable to release the shared memory")
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return;
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}
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#endif
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signals->set_bit(hw_pin, (int)ast);
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}
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//---------------------------------------------------------------------------
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@ -545,20 +484,6 @@ uint32_t GPIOBUS_Virtual::Acquire()
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{
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GPIO_FUNCTION_TRACE;
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uint32_t signal_value = 0;
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#ifdef SHARED_MEMORY_GPIO
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if (sem_wait(mutex_sem) == -1) {
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LOGERROR("Unable to lock the shared memory")
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return false;
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}
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#endif
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signal_value = *signals;
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#ifdef SHARED_MEMORY_GPIO
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if (sem_post(mutex_sem) == -1) {
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LOGERROR("Unable to release the shared memory")
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return false;
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}
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#endif
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uint32_t signal_value = signals->get();
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return signal_value;
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}
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@ -15,6 +15,7 @@
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#include "hal/gpiobus.h"
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#include "shared/log.h"
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#include "shared/scsi.h"
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#include "shared/shared_memory.h"
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#include <map>
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#include <semaphore.h>
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@ -148,7 +149,7 @@ class GPIOBUS_Virtual final : public GPIOBUS
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void PullConfig(int pin, int mode) override
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{
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(void)mode; // Put these in opposite order so Sonar doesn't complain
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(void)pin; // That PinConfig and PullConfig are identical
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(void)pin; // That PinConfig and PullConfig are identical
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}
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// GPIO pin pull up/down resistor setting
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void PinSetSignal(int pin, bool ast) override;
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@ -157,18 +158,10 @@ class GPIOBUS_Virtual final : public GPIOBUS
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// Set GPIO drive strength
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array<int, 19> SignalTable;
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shared_ptr<uint32_t> signals; // All bus signals
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unique_ptr<SharedMemory> signals;
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unique_ptr<DataSample> GetSample(uint64_t timestamp) override
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{
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return make_unique<DataSample_Raspberry>(*signals, timestamp);
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return make_unique<DataSample_Raspberry>(signals->get(), timestamp);
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}
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#ifdef SHARED_MEMORY_GPIO
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inline static const string SHARED_MEM_MUTEX_NAME = "/sem-mutex";
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inline static const string SHARED_MEM_NAME = "/posix-shared-mem-example";
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sem_t *mutex_sem, *buffer_count_sem, *spool_signal_sem;
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int fd_shm, fd_log;
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#endif
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};
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@ -13,6 +13,7 @@
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#include "hal/systimer.h"
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#include "hal/systimer_allwinner.h"
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#include "hal/systimer_linux.h"
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#include "hal/systimer_raspberry.h"
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#include <sys/mman.h>
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@ -38,6 +39,8 @@ void SysTimer::Init()
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} else if (SBC_Version::IsBananaPi()) {
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systimer_ptr = make_unique<SysTimer_AllWinner>();
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is_allwinnner = true;
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} else {
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systimer_ptr = make_unique<SysTimer_Linux>();
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}
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systimer_ptr->Init();
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initialized = true;
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@ -0,0 +1,92 @@
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//---------------------------------------------------------------------------
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//
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// SCSI Target Emulator PiSCSI
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// for Raspberry Pi
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//
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// Copyright (C) 2023 akuker
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//
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// [ High resolution timer for the Allwinner series of SoC's]
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//
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//---------------------------------------------------------------------------
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#include "hal/systimer_linux.h"
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#include <sys/mman.h>
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#include "hal/gpiobus.h"
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#include "shared/log.h"
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//---------------------------------------------------------------------------
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//
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// Initialize the system timer
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//
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//---------------------------------------------------------------------------
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void SysTimer_Linux::Init()
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{
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LOGTRACE("%s", __PRETTY_FUNCTION__)
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int result = clock_getres(CLOCK_PROCESS_CPUTIME_ID, &timer_resolution);
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LOGINFO("CPU resolution is: %lu (result: %d)", timer_resolution.tv_nsec, result);
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}
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uint32_t SysTimer_Linux::GetTimerLow()
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{
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LOGWARN("%s NOT IMPLEMENTED", __PRETTY_FUNCTION__);
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return 0;
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}
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uint32_t SysTimer_Linux::GetTimerHigh()
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{
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LOGWARN("%s NOT IMPLEMENTED", __PRETTY_FUNCTION__);
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return (uint32_t)0;
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}
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//---------------------------------------------------------------------------
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//
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// Sleep in nanoseconds
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//
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//---------------------------------------------------------------------------
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void SysTimer_Linux::SleepNsec(uint32_t nsec)
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{
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(void)nsec;
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LOGWARN("%s NOT IMPLEMENTED", __PRETTY_FUNCTION__);
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// // If time is less than one HS timer clock tick, don't do anything
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// if (nsec < 20) {
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// return;
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// }
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// // The HS timer receives a 200MHz clock input, which equates to
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// // one clock tick every 5 ns.
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// auto clockticks = (uint32_t)std::ceil(nsec / 5);
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// uint32_t enter_time = hsitimer_regs->hs_tmr_curnt_lo_reg;
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// // TODO: NEED TO HANDLE COUNTER OVERFLOW
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// LOGTRACE("%s entertime: %08X ns: %d clockticks: %d", __PRETTY_FUNCTION__, enter_time, nsec, clockticks)
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// while ((enter_time - hsitimer_regs->hs_tmr_curnt_lo_reg) < clockticks)
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// ;
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return;
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}
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//---------------------------------------------------------------------------
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//
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// Sleep in microseconds
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//
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//---------------------------------------------------------------------------
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void SysTimer_Linux::SleepUsec(uint32_t usec)
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{
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(void)usec;
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LOGTRACE("%s", __PRETTY_FUNCTION__)
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LOGWARN("%s NOT IMPLEMENTED", __PRETTY_FUNCTION__);
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// // If time is 0, don't do anything
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// if (usec == 0) {
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// return;
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// }
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// uint32_t enter_time = GetTimerLow();
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// while ((GetTimerLow() - enter_time) < usec)
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// ;
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}
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@ -0,0 +1,42 @@
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//---------------------------------------------------------------------------
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//
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// SCSI Target Emulator PiSCSI
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// for Raspberry Pi
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//
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// Copyright (C) 2023 akuker
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//
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// [ OS-based timer for simulation purposes ]
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//
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//---------------------------------------------------------------------------
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#pragma once
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#include "systimer.h"
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#include <stdint.h>
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#include <string>
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//===========================================================================
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//
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// System timer
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//
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//===========================================================================
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class SysTimer_Linux : public PlatformSpecificTimer
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{
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public:
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// Default constructor
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SysTimer_Linux() = default;
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// Default destructor
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~SysTimer_Linux() override = default;
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// Initialization
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void Init() override;
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// Get system timer low byte
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uint32_t GetTimerLow() override;
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// Get system timer high byte
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uint32_t GetTimerHigh() override;
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// Sleep for N nanoseconds
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void SleepNsec(uint32_t nsec) override;
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// Sleep for N microseconds
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void SleepUsec(uint32_t usec) override;
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private:
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struct timespec timer_resolution;
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};
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@ -120,7 +120,7 @@ void ScsiDump::ParseArguments(const vector<char*>& args)
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} break;
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case 'v':
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set_level(level::debug);
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set_level(level::trace);
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break;
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case 'r':
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@ -266,6 +266,7 @@ void ScsiDump::RequestSense()
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void ScsiDump::Inquiry()
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{
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LOGTRACE("%s", __PRETTY_FUNCTION__)
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vector<uint8_t> cdb(6);
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cdb[4] = 0xff;
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Command(scsi_command::eCmdInquiry, cdb);
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@ -403,10 +404,10 @@ int ScsiDump::run(const vector<char*>& args)
|
|||
try {
|
||||
ParseArguments(args);
|
||||
|
||||
#ifndef USE_SEL_EVENT_ENABLE
|
||||
cerr << "Error: No PiSCSI hardware support" << endl;
|
||||
return EXIT_FAILURE;
|
||||
#endif
|
||||
// #ifndef USE_SEL_EVENT_ENABLE
|
||||
// cerr << "Error: No PiSCSI hardware support" << endl;
|
||||
// return EXIT_FAILURE;
|
||||
// #endif
|
||||
|
||||
return DumpRestore();
|
||||
} catch (const parser_exception& e) {
|
||||
|
|
|
|||
|
|
@ -0,0 +1,21 @@
|
|||
//---------------------------------------------------------------------------
|
||||
//
|
||||
// SCSI Target Emulator PiSCSI
|
||||
// for Raspberry Pi
|
||||
//
|
||||
// Copyright (C) 2023 akuker
|
||||
//
|
||||
// Simulate a virtual SCSI bus via shared memory on the local host.
|
||||
//
|
||||
//---------------------------------------------------------------------------
|
||||
|
||||
#include "scsisim/scsisim_core.h"
|
||||
|
||||
using namespace std;
|
||||
|
||||
int main(int argc, char *argv[])
|
||||
{
|
||||
const vector<char *> args(argv, argv + argc);
|
||||
|
||||
return ScsiSim().run(args);
|
||||
}
|
||||
|
|
@ -0,0 +1,174 @@
|
|||
//---------------------------------------------------------------------------
|
||||
//
|
||||
// SCSI Target Emulator PiSCSI for Raspberry Pi
|
||||
//
|
||||
// Copyright (C) 2023 akuker
|
||||
//
|
||||
// [ SCSI Bus Emulator ]
|
||||
//
|
||||
//---------------------------------------------------------------------------
|
||||
#include "scsisim_core.h"
|
||||
#include "shared/log.h"
|
||||
#include "shared/piscsi_util.h"
|
||||
#include "spdlog/sinks/stdout_color_sinks.h"
|
||||
|
||||
#include "scsisim_defs.h"
|
||||
#include <iostream>
|
||||
#include <signal.h>
|
||||
#include <sys/mman.h>
|
||||
|
||||
#if defined CONNECT_TYPE_STANDARD
|
||||
#include "hal/connection_type/connection_standard.h"
|
||||
#elif defined CONNECT_TYPE_FULLSPEC
|
||||
#include "hal/connection_type/connection_fullspec.h"
|
||||
#elif defined CONNECT_TYPE_AIBOM
|
||||
#include "hal/connection_type/connection_aibom.h"
|
||||
#elif defined CONNECT_TYPE_GAMERNIUM
|
||||
#include "hal/connection_type/connection_gamernium.h"
|
||||
#else
|
||||
#include "hal/connection_type/connection_gamernium.h"
|
||||
#endif
|
||||
|
||||
using namespace std;
|
||||
using namespace spdlog;
|
||||
|
||||
string current_log_level = "unknown"; // Some versions of spdlog do not support get_log_level()
|
||||
|
||||
static ScsiSim* scsi_sim;
|
||||
|
||||
void ScsiSim::Banner(const vector<char*>& args) const
|
||||
{
|
||||
cout << piscsi_util::Banner("(SCSI Bus Simulator)");
|
||||
cout << "Connection type: " << CONNECT_DESC << '\n' << flush;
|
||||
|
||||
if ((args.size() > 1 && strcmp(args[1], "-h") == 0) || (args.size() > 1 && strcmp(args[1], "--help") == 0)) {
|
||||
cout << "\nUsage: " << args[0] << " [-L log_level] ...\n\n";
|
||||
exit(EXIT_SUCCESS);
|
||||
}
|
||||
}
|
||||
|
||||
bool ScsiSim::SetLogLevel(const string& log_level)
|
||||
{
|
||||
if (log_level == "trace") {
|
||||
set_level(level::trace);
|
||||
enable_debug = true;
|
||||
} else if (log_level == "debug") {
|
||||
set_level(level::debug);
|
||||
enable_debug = true;
|
||||
} else if (log_level == "info") {
|
||||
set_level(level::info);
|
||||
} else if (log_level == "warn") {
|
||||
set_level(level::warn);
|
||||
} else if (log_level == "err") {
|
||||
set_level(level::err);
|
||||
} else if (log_level == "critical") {
|
||||
set_level(level::critical);
|
||||
} else if (log_level == "off") {
|
||||
set_level(level::off);
|
||||
} else {
|
||||
return false;
|
||||
}
|
||||
|
||||
current_log_level = log_level;
|
||||
|
||||
LOGINFO("Set log level to '%s'", current_log_level.c_str())
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void ScsiSim::TerminationHandler(int signum)
|
||||
{
|
||||
(void)signum;
|
||||
// scsi_sim->TeardownSharedMemory();
|
||||
scsi_sim->running = false;
|
||||
// exit(signum);
|
||||
}
|
||||
|
||||
bool ScsiSim::ParseArgument(const vector<char*>& args)
|
||||
{
|
||||
string name;
|
||||
string log_level;
|
||||
|
||||
const char* locale = setlocale(LC_MESSAGES, "");
|
||||
if (locale == nullptr || !strcmp(locale, "C")) {
|
||||
locale = "en";
|
||||
}
|
||||
|
||||
opterr = 1;
|
||||
int opt;
|
||||
|
||||
while ((opt = getopt(static_cast<int>(args.size()), args.data(), "-L:")) != -1) {
|
||||
switch (opt) {
|
||||
case 'L':
|
||||
log_level = optarg;
|
||||
continue;
|
||||
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
|
||||
if (optopt) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
if (!log_level.empty()) {
|
||||
SetLogLevel(log_level);
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
int ScsiSim::run(const vector<char*>& args)
|
||||
{
|
||||
running = true;
|
||||
scsi_sim = this;
|
||||
|
||||
// added setvbuf to override stdout buffering, so logs are written immediately and not when the process exits.
|
||||
setvbuf(stdout, nullptr, _IONBF, 0);
|
||||
|
||||
// Output the Banner
|
||||
Banner(args);
|
||||
|
||||
// Create a thread-safe stdout logger to process the log messages
|
||||
const auto logger = stdout_color_mt("scsisim stdout logger");
|
||||
set_level(level::info);
|
||||
current_log_level = "info";
|
||||
|
||||
vector<string> error_list;
|
||||
|
||||
if (!ParseArgument(args)) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
// Signal handler to detach all devices on a KILL or TERM signal
|
||||
struct sigaction termination_handler;
|
||||
termination_handler.sa_handler = TerminationHandler;
|
||||
sigemptyset(&termination_handler.sa_mask);
|
||||
termination_handler.sa_flags = 0;
|
||||
sigaction(SIGINT, &termination_handler, nullptr);
|
||||
sigaction(SIGTERM, &termination_handler, nullptr);
|
||||
|
||||
signals = make_unique<SharedMemory>(SHARED_MEM_NAME);
|
||||
|
||||
uint32_t prev_value = -1;
|
||||
int dot_counter = 0;
|
||||
while (running) {
|
||||
if (enable_debug) {
|
||||
uint32_t new_value = signals->get();
|
||||
// Note, this won't necessarily print ever data change. It will
|
||||
// just give an indication of activity
|
||||
if (new_value != prev_value) {
|
||||
LOGTRACE("%s Value changed to %08X", __PRETTY_FUNCTION__, new_value);
|
||||
prev_value = new_value;
|
||||
}
|
||||
if(++dot_counter > 1000){
|
||||
printf(".");
|
||||
dot_counter = 0;
|
||||
}
|
||||
}
|
||||
usleep(1000);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -0,0 +1,41 @@
|
|||
//---------------------------------------------------------------------------
|
||||
//
|
||||
// SCSI Target Emulator PiSCSI
|
||||
// for Raspberry Pi
|
||||
//
|
||||
// Copyright (C) 2023 akuker
|
||||
//
|
||||
//---------------------------------------------------------------------------
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <string>
|
||||
#include <vector>
|
||||
|
||||
#include "shared/shared_memory.h"
|
||||
|
||||
using namespace std;
|
||||
|
||||
class ScsiSim
|
||||
{
|
||||
public:
|
||||
ScsiSim() = default;
|
||||
~ScsiSim() = default;
|
||||
|
||||
int run(const vector<char*>& args);
|
||||
|
||||
private:
|
||||
void Banner(const vector<char*>&) const;
|
||||
static void TerminationHandler(int signum);
|
||||
bool ParseArgument(const vector<char*>&);
|
||||
bool SetLogLevel(const string&);
|
||||
|
||||
int InitSharedMemory();
|
||||
void TeardownSharedMemory();
|
||||
|
||||
bool enable_debug = false;
|
||||
|
||||
unique_ptr<SharedMemory> signals;
|
||||
|
||||
bool running;
|
||||
};
|
||||
|
|
@ -0,0 +1,18 @@
|
|||
//---------------------------------------------------------------------------
|
||||
//
|
||||
// SCSI Target Emulator PiSCSI for Raspberry Pi
|
||||
//
|
||||
// Copyright (C) 2023 akuker
|
||||
//
|
||||
// [ SCSI Bus Emulator Common Definitions]
|
||||
//
|
||||
//---------------------------------------------------------------------------
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <string>
|
||||
|
||||
using namespace std;
|
||||
|
||||
const string SHARED_MEM_MUTEX_NAME = "/piscsi-sem-mutex";
|
||||
const string SHARED_MEM_NAME = "/piscsi-shared-mem";
|
||||
|
|
@ -0,0 +1,104 @@
|
|||
#include "shared_memory.h"
|
||||
#include "shared/log.h"
|
||||
#include <fcntl.h>
|
||||
#include <sys/stat.h>
|
||||
|
||||
// template <class T> void SharedMemory<T>::teardown(){
|
||||
SharedMemory::~SharedMemory()
|
||||
{
|
||||
LOGTRACE("%s", __PRETTY_FUNCTION__);
|
||||
if (m_mem != nullptr) {
|
||||
if (munmap(m_mem, m_size) == 0) {
|
||||
LOGTRACE("munmap successful");
|
||||
} else {
|
||||
LOGWARN("munmap NOT successful ERROR!!!");
|
||||
}
|
||||
}
|
||||
|
||||
LOGTRACE("%s Unlinking shared memory", __PRETTY_FUNCTION__);
|
||||
if (shm_unlink(m_name.c_str()) == 0) {
|
||||
LOGTRACE("shm_unlink success");
|
||||
} else {
|
||||
LOGWARN("shm_unlink failed!!!");
|
||||
}
|
||||
}
|
||||
|
||||
// template <class T> SharedMemory<T>::~SharedMemory()
|
||||
// // SharedMemory::~SharedMemory()
|
||||
// {
|
||||
// // }
|
||||
|
||||
// }
|
||||
// template <class T> SharedMemory<T>::SharedMemory(SharedMemory::RoleEnum role, std::string region_name) :
|
||||
// // m_role(role), m_size(sizeof(T))
|
||||
// SharedMemory::SharedMemory(SharedMemory::RoleEnum role, std::string region_name)
|
||||
// : m_role(role), m_size(sizeof(uint32_t))
|
||||
// {
|
||||
// (void)role;
|
||||
// (void)region_name;
|
||||
// }
|
||||
// template <class T> SharedMemory<T>::SharedMemory(SharedMemory::RoleEnum role, std::string region_name) :
|
||||
// m_role(role), m_size(sizeof(T))
|
||||
SharedMemory::SharedMemory(std::string region_name) : m_size(sizeof(uint32_t)), m_name(region_name)
|
||||
{
|
||||
// if(m_role == RoleEnum::Controller){
|
||||
// m_mutex_sem = sem_open(SHARED_MEM_MUTEX_NAME.c_str(), O_RDWR | O_CREAT, S_IRUSR | S_IWUSR, 0);
|
||||
// }
|
||||
// else{
|
||||
// m_mutex_sem = sem_open(SHARED_MEM_MUTEX_NAME.c_str(), O_RDWR | O_CREAT, S_IRUSR | S_IWUSR, 0);
|
||||
|
||||
// }
|
||||
// // Create a shared memory region that can be accessed as a virtual "SCSI bus"
|
||||
// // mutual exclusion semaphore, mutex_sem with an initial value 0.
|
||||
// if ( == SEM_FAILED) {
|
||||
// LOGERROR("Unable to open shared memory semaphore %s. Is scsisim already running?",
|
||||
// SHARED_MEM_MUTEX_NAME.c_str());
|
||||
// return 0;
|
||||
// }
|
||||
// LOGTRACE("%s Successfully created mutex %s", __PRETTY_FUNCTION__, SHARED_MEM_MUTEX_NAME.c_str())
|
||||
|
||||
// sem_post(mutex_sem);
|
||||
|
||||
LOGINFO("%s Opening shared memory %s", __PRETTY_FUNCTION__, region_name.c_str())
|
||||
// Get shared memory
|
||||
int mode = S_IRWXU | S_IRWXG;
|
||||
if ((m_fd_shared_mem = shm_open(region_name.c_str(), O_RDWR | O_CREAT | O_TRUNC, mode)) == -1) {
|
||||
LOGERROR("Unable to open shared memory %s. Is scsisim already running?", region_name.c_str());
|
||||
sem_close(m_mutex_sem);
|
||||
}
|
||||
LOGTRACE("%s Successfully created shared memory %s", __PRETTY_FUNCTION__, region_name.c_str())
|
||||
|
||||
// Extend the shared memory, since its default size is zero
|
||||
if (ftruncate(m_fd_shared_mem, sizeof(lockable_data_t)) == -1) {
|
||||
LOGERROR("Unable to expand shared memory");
|
||||
sem_close(m_mutex_sem);
|
||||
shm_unlink(region_name.c_str());
|
||||
return;
|
||||
}
|
||||
LOGINFO("%s Shared memory region expanded to %d bytes", __PRETTY_FUNCTION__, static_cast<int>(sizeof(uint32_t)))
|
||||
|
||||
// signals.Reset(NULL, sizeof(uint32_t), PROT_READ | PROT_WRITE, MAP_SHARED, fd_shm, 0);
|
||||
|
||||
shared_mem =
|
||||
(lockable_data_t*)mmap(NULL, sizeof(lockable_data_t), PROT_READ | PROT_WRITE, MAP_SHARED, m_fd_shared_mem, 0);
|
||||
if (shared_mem == MAP_FAILED) {
|
||||
LOGERROR("Unabled to map shared memory");
|
||||
sem_close(m_mutex_sem);
|
||||
shm_unlink(region_name.c_str());
|
||||
return;
|
||||
}
|
||||
|
||||
LOGINFO("%s Shared memory region successfully memory mapped", __PRETTY_FUNCTION__)
|
||||
|
||||
// *signals.mem() = 0;
|
||||
}
|
||||
|
||||
// template <class T > SharedMemory<T>::~SharedMemory() {
|
||||
|
||||
// // template <typename T>
|
||||
// // shared_ptr<SharedMemory<T>> SharedMemory::Create(SharedMemory::Role role){
|
||||
|
||||
// // mem_ = mmap(start, size, prot, flags, fd, offset);
|
||||
// // size_ = size;
|
||||
|
||||
// }
|
||||
|
|
@ -0,0 +1,117 @@
|
|||
//---------------------------------------------------------------------------
|
||||
//
|
||||
// SCSI Target Emulator PiSCSI
|
||||
// for Raspberry Pi
|
||||
//
|
||||
// Copyright (C) 2023 akuker
|
||||
// Portions of this file Copyright (C) 2018 Intel Corporation
|
||||
// (MIT licensed)
|
||||
// https://github.com/nodejs/node/blob/main/src/large_pages/node_large_page.h
|
||||
//
|
||||
//---------------------------------------------------------------------------
|
||||
|
||||
#include <iostream>
|
||||
#include <map>
|
||||
#include <memory>
|
||||
#include <mutex>
|
||||
#include <semaphore.h>
|
||||
#include <shared_mutex>
|
||||
#include <string>
|
||||
#include <sys/mman.h>
|
||||
#include <thread>
|
||||
|
||||
// template <class T> class SharedMemory
|
||||
class SharedMemory
|
||||
{
|
||||
public:
|
||||
enum RoleEnum { Controller, User };
|
||||
SharedMemory() = default;
|
||||
// SharedMemory(RoleEnum, std::string);
|
||||
SharedMemory(std::string);
|
||||
|
||||
// static shared_ptr<SharedMemory<T>> Create(RoleEnum);
|
||||
|
||||
~SharedMemory();
|
||||
|
||||
// // inline bool operator==(T* rhs) const
|
||||
// inline bool operator==(uint32_t* rhs) const
|
||||
// {
|
||||
// return mem_ == (void*)rhs;
|
||||
// }
|
||||
// // inline T* mem() const
|
||||
// inline uint32_t* mem() const
|
||||
// {
|
||||
// return (uint32_t*)mem_;
|
||||
// }
|
||||
// // inline T read() const
|
||||
// inline uint32_t read() const
|
||||
// {
|
||||
// return *mem();
|
||||
// }
|
||||
// SharedMemory(const SharedMemory&) = delete;
|
||||
// SharedMemory(SharedMemory&&) = delete;
|
||||
// void operator=(const SharedMemory&) = delete;
|
||||
// void operator=(const SharedMemory&&) = delete;
|
||||
|
||||
// inline bool IsValid()
|
||||
// {
|
||||
// return ((mem_ != nullptr) && (mem_ != MAP_FAILED));
|
||||
// }
|
||||
|
||||
// void teardown();
|
||||
|
||||
// Multiple threads/readers can read the counter's value at the same time.
|
||||
// T get() const {
|
||||
uint32_t get() const{
|
||||
std::shared_lock lock(shared_mem->mutex_);
|
||||
return shared_mem->value_;
|
||||
}
|
||||
|
||||
// Only one thread/writer can increment/write the counter's value.
|
||||
// void set(T new_val) {
|
||||
void set(uint32_t new_val) {
|
||||
std::unique_lock lock(shared_mem->mutex_);
|
||||
shared_mem->value_ = new_val;
|
||||
}
|
||||
|
||||
void set_bit(int bit_num, int value)
|
||||
{
|
||||
std::unique_lock lock(shared_mem->mutex_);
|
||||
if (value) {
|
||||
// Set bit
|
||||
shared_mem->value_ |= (1 << bit_num);
|
||||
} else {
|
||||
// Clear bit
|
||||
shared_mem->value_ &= ~(1 << bit_num);
|
||||
}
|
||||
}
|
||||
|
||||
// Only one thread/writer can reset/write the counter's value.
|
||||
void reset()
|
||||
{
|
||||
std::unique_lock lock(shared_mem->mutex_);
|
||||
shared_mem->value_ = 0;
|
||||
}
|
||||
|
||||
private:
|
||||
typedef struct lockable_data {
|
||||
mutable std::shared_mutex mutex_;
|
||||
// T value_;
|
||||
uint32_t value_;
|
||||
} lockable_data_t;
|
||||
// typedef lockable_data_t struct lockable_data_struct;
|
||||
|
||||
// explicit SharedMemory()
|
||||
// {
|
||||
// }
|
||||
|
||||
lockable_data_t* shared_mem;
|
||||
|
||||
// SharedMemory::RoleEnum m_role;
|
||||
size_t m_size = 0;
|
||||
void* m_mem = nullptr;
|
||||
// void* mem_;
|
||||
sem_t* m_mutex_sem;
|
||||
int m_fd_shared_mem;
|
||||
std::string m_name;
|
||||
};
|
||||
Loading…
Reference in New Issue