void EnableCtrInterrupt(void) {
unsigned int val;
printk(KERN_DEBUG PFX "Enabling PPS interrupt on IRQ%d Vector %d\n",
CTR_IRQ_LEVEL, CTR_IRQ_VECTOR);
/* Setup the IRQ level and vector */
val = (unsigned long)((CTR_IRQ_LEVEL << 8) | (CTR_IRQ_VECTOR & 0xff));
iowrite32be(val, &mmap->Setup);
if (vme_bus_error_check(1))
printk(KERN_ERR PFX "Bus error writing Setup\n");
/* Will interrupt once per second */
iowrite32be(CtrDrvrInterruptMaskPPS, &mmap->InterruptEnable);
if (vme_bus_error_check(1))
printk(KERN_ERR PFX "Bus error writing InterruptEnable\n");
val = ioread32be(&mmap->InterruptEnable);
if (vme_bus_error_check(1))
printk(KERN_ERR PFX "Bus error reading InterruptEnable\n");
if (val != CtrDrvrInterruptMaskPPS)
printk(KERN_DEBUG PFX "Failed to enable PPS interrupt %08x\n",
val);
}
void DisableCtrModule(void)
{
int val = ioread32be(&mmap->Command);
printk(KERN_DEBUG PFX "Disabling CTR module\n");
if (vme_bus_error_check(1))
printk(KERN_ERR PFX "Bus error reading Command\n");
val &= ~CtrDrvrCommandENABLE;
val |= CtrDrvrCommandDISABLE;
iowrite32be(val, &mmap->Command);
if (vme_bus_error_check(1))
printk(KERN_ERR PFX "Bus error writing Command\n");
}
void DisableCtrInterrupt(void)
{
printk(KERN_DEBUG PFX "Disabling PPS interrupt\n");
iowrite32be(0, &mmap->InterruptEnable);
if (vme_bus_error_check(1))
printk(KERN_ERR PFX "Bus error writing InterruptEnable\n");
}
/**
* \brief Get the number of post-trigger samples
*
* \return the number of requested samples on success or -1 on a VME bus error.
*
* Get the number of post-trigger samples requested.
*/
int vd80_get_postsamples(void)
{
int val = swapbe32(regs[VD80_TCR2/4]);
if (vme_bus_error_check(®s_desc)) {
printf("Bus error reading POSTSAMPLES\n");
return -1;
}
return val;
}
void ResetCtr(void)
{
printk(KERN_DEBUG PFX "Resetting CTR module\n");
iowrite32be(CtrDrvrCommandRESET, &mmap->Command);
if (vme_bus_error_check(1))
printk(KERN_ERR PFX "Bus error Writing Command\n");
/* Wait at least 10 ms after a "reset", for the module to recover */
msleep(20);
}
/**
* \brief Generate an internal trigger
*
* \return 0 on success else 1 on a VME bus error.
*/
int vd80_cmd_trig(void)
{
regs[VD80_GCR1/4] |= swapbe32(VD80_COMMAND_TRIG);
if (vme_bus_error_check(®s_desc)) {
printf("Bus error triggering sampling\n");
return 1;
}
return 0;
}
/**
* \brief Record only a single sample
*
* \return 0 on success else 1 on a VME bus error.
*/
int vd80_cmd_single(void)
{
regs[VD80_GCR1/4] |= swapbe32(VD80_COMMAND_SINGLE);
if (vme_bus_error_check(®s_desc)) {
printf("Bus error setting SINGLE\n");
return 1;
}
return 0;
}
/**
* \brief Stop sampling
*
* \return 0 on success else 1 on a VME bus error.
*/
int vd80_cmd_stop(void)
{
regs[VD80_GCR1/4] |= swapbe32(VD80_COMMAND_STOP);
if (vme_bus_error_check(®s_desc)) {
printf("Bus error stopping sampling\n");
return 1;
}
return 0;
}
/**
* \brief Start subsampling
*
* \return 0 on success else 1 on a VME bus error.
*/
int vd80_cmd_substart(void)
{
regs[VD80_GCR1/4] |= swapbe32(VD80_COMMAND_SUBSTART);
if (vme_bus_error_check(®s_desc)) {
printf("Bus error starting sub sampling\n");
return 1;
}
return 0;
}
/**
* \brief Clear the pre-trigger counter
*
* \return 0 on success else 1 on a VME bus error.
*/
int vd80_cmd_clear(void)
{
regs[VD80_GCR1/4] |= swapbe32(VD80_COMMAND_CLEAR);
if (vme_bus_error_check(®s_desc)) {
printf("Bus error setting CLEAR\n");
return 1;
}
return 0;
}
/**
* \brief Set the readout starting sample
* \param readstart READSTART value to set
*
* \return 0 on success else 1 on a VME bus error.
*
* \note READSTART counts in steps of 32 samples. Therefore the number of
* samples is READSTART * 32.
*/
int vd80_set_readstart(unsigned int readstart)
{
regs[VD80_MCR1/4] = swapbe32((readstart << VD80_READSTART_SHIFT) &
VD80_READSTART_MASK);
if (vme_bus_error_check(®s_desc)) {
printf("Bus error setting READSTART\n");
return 1;
}
return 0;
}
/**
* \brief Set the number of post-trigger samples
* \param num Number of post-trigger samples to store
*
* \return 0 on success or -1 on a VME bus error.
*
* Set the number of samples recorded between the trigger and sampling end.
*/
int vd80_set_postsamples(unsigned int num)
{
regs[VD80_TCR2/4] = swapbe32(num & 0x7ffff);
if (vme_bus_error_check(®s_desc)) {
printf("Bus error setting POSTSAMPLES\n");
return -1;
}
return 0;
}
/**
* \brief Set the number of samples that must be read
* \param readlen READLEN value to set
*
* \return 0 on success else 1 on a VME bus error.
*
* \note READLEN counts in steps of 32 samples. Therefore the number of samples
* is (READLEN + 1) * 32 and the minimum number of samples is 32
*/
int vd80_set_readlen(unsigned int readlen)
{
regs[VD80_MCR2/4] = swapbe32((readlen << VD80_READLEN_SHIFT) &
VD80_READLEN_MASK);
if (vme_bus_error_check(®s_desc)) {
printf("Bus error setting READLEN\n");
return 1;
}
return 0;
}
/**
* \brief Get the number of post-trigger samples
*
* \return the number of post-trigger samples or -1 on a VME bus error.
*
* Get the number of samples recorded between the trigger and the sampling
* end.
*/
int vd80_get_post_length(void)
{
int reg = swapbe32(regs[VD80_TSR/4]);
int val = (reg & VD80_ACTPOSTSAMPLES_MASK) >>
VD80_ACTPOSTSAMPLES_SHIFT;
if (vme_bus_error_check(®s_desc)) {
printf("Bus error reading ACTPOSTSAMPLES\n");
return -1;
}
return val;
}
/**
* \brief Get the total shot length
*
* \return the total number of samples or -1 on a VME bus error.
*
* Get the total number of samples taken during a shot
* (pre-samples + post-samples).
*/
int vd80_get_shot_length(void)
{
int reg = swapbe32(regs[VD80_SSR/4]);
int val = (reg & VD80_SHOTLEN_MASK) >>
VD80_SHOTLEN_SHIFT;
if (vme_bus_error_check(®s_desc)) {
printf("Bus error reading SHOTLEN\n");
return -1;
}
return val;
}
/**
* \brief Enable readout of the sample buffer
* \param channel Channel to read samples from (1 to 16)
*
* \return 0 on success else 1 on a VME bus error.
*/
int vd80_cmd_read(unsigned int channel)
{
regs[VD80_GCR1/4] |= swapbe32((VD80_COMMAND_READ |
((channel << VD80_OPERANT_SHIFT) &
VD80_OPERANT_MASK)));
if (vme_bus_error_check(®s_desc)) {
printf("Bus error setting READ for channel %d\n", channel);
return 1;
}
return 0;
}
/**
* \brief Set little or big endian samples recording
* \param bigend When set, samples are stored in big endian ordering, else in
* little endian
*
* \return 0 on success else 1 on a VME bus error.
*/
int vd80_cmd_setbig(int bigend)
{
if (bigend)
regs[VD80_GCR2/4] |= swapbe32(VD80_BIGEND);
else
regs[VD80_GCR2/4] &= swapbe32(~VD80_BIGEND);
if (vme_bus_error_check(®s_desc)) {
printf("Bus error setting samples endianess\n");
return 1;
}
return 0;
}
/**
* \brief Enable/Disable generation of the test waveform
* \param debug When set, enable generation of the test waveform, else disable
*
* \return 0 on success else 1 on a VME bus error.
*
* The test waveform consists in a digital ramp.
*/
int vd80_cmd_setdebug(int debug)
{
if (debug)
regs[VD80_GCR2/4] |= swapbe32(VD80_DBCNTSEL);
else
regs[VD80_GCR2/4] &= swapbe32(~VD80_DBCNTSEL);
if (vme_bus_error_check(®s_desc)) {
printf("Bus error setting debug counter select\n");
return 1;
}
return 0;
}
int main(int argc, char **argv)
{
struct pdparam_master param;
struct vme_mapping *desc;
unsigned int *vme_buf;
int i;
unsigned int val;
unsigned int saved;
memset(¶m, 0, sizeof(struct pdparam_master));
if ((vme_buf = (unsigned int *)find_controller(MODULE_VME_ADDR,
MODULE_VME_SIZE,
MODULE_AM, 0, 4,
¶m)) == 0) {
printf("Failed to find_controller: %s\n", strerror(errno));
exit(1);
}
printf("find_controller mmap'ed at %p\n\n", vme_buf);
desc = (struct vme_mapping *)param.sgmin;
/* Now test read access */
for (i = 1; i <= 5; i++) {
val = swapbe32(vme_buf[i]);
printf("%x: 0x%08x\n", MODULE_VME_ADDR + i*4, val);
}
/* Check for a bus error */
if (vme_bus_error_check(desc))
printf("Bus error occured\n");
/* Test a write access */
printf("\n");
saved = swapbe32(vme_buf[1]);
printf("Read 0x%08x at 0x%08x\n", saved, MODULE_VME_ADDR + 4);
/* Check for a bus error */
if (vme_bus_error_check(desc))
printf("Bus error occured\n");
printf("\n");
printf("Writing 0x55aa55aa at address %x\n", MODULE_VME_ADDR + 4);
vme_buf[1] = swapbe32(0x55aa55aa);
fsync(desc->fd);
/* Check for a bus error */
if (vme_bus_error_check(desc))
printf("Bus error occured\n");
val = swapbe32(vme_buf[1]);
/* Check for a bus error */
if (vme_bus_error_check(desc))
printf("Bus error occured\n");
printf("Read back 0x%08x at address %x\n", val, MODULE_VME_ADDR + 4);
/*
vme_buf[1] = swapbe32(saved);
if (vme_bus_error_check(desc))
printf("Bus error occured\n");
*/
printf("\n");
if (return_controller(desc))
printf("Failed to return_controler: %s\n", strerror(errno));
return 0;
}
/**
* \brief Map and initialize the VD80 for operation
*
* \return 0 on success else 1 on failure.
*
* This functions performs the necessary initializations to prepare the
* board for sampling:
*
* \li map the operational registers into the user address space
* \li clear any interrupts
* \li disable interrupts
* \li configure the sampling clock source to use the internal clock divided
* by 2 which yields a 100kHz sampling clock
* \li configure the trigger source to use the internal trigger
* \li set the number of post samples to 0
* \li setup the pretrigger control to clear the pretrigger counter on a
* \a START command, to clear the \a PRESAMPLES counter on reading the
* pretrigger status register and to unse the sample clock for the
* pretrigger counter
* \li enable generation of the test waveform
*
* \note Those settings are \b testing settings and must be adapted for
* operational use.
*
*/
int vd80_init(void)
{
int rc = 1;
/* Open a mapping for the VD80 operational registers */
memset(®s_desc, 0, sizeof(struct vme_mapping));
regs_desc.window_num = 0;
regs_desc.am = VD80_OPER_AM;
regs_desc.read_prefetch_enabled = 0;
regs_desc.data_width = VD80_OPER_DW;
regs_desc.sizeu = 0;
regs_desc.sizel = VD80_OPER_SIZE;
regs_desc.vme_addru = 0;
regs_desc.vme_addrl = VD80_OPER_BASE;
if ((regs = vme_map(®s_desc, 1)) == NULL) {
printf("Failed to map VD80 operational registers: %s\n",
strerror(errno));
printf(" addr: %x size: %x am: %x dw: %d\n", VD80_OPER_BASE,
VD80_OPER_SIZE, VD80_OPER_AM, VD80_OPER_DW);
return 1;
}
/* Clear interrupts */
regs[VD80_GCR1/4] |= swapbe32(VD80_INTCLR | VD80_IOERRCLR);
if (vme_bus_error_check(®s_desc)) {
printf("Bus error initializing GCR1\n");
goto out;
}
/*
* Disable interrupts, set little endian mode and disable debug
* counter (Clear all bits).
*/
regs[VD80_GCR2/4] = 0;
if (vme_bus_error_check(®s_desc)) {
printf("Bus error initializing GCR2\n");
goto out;
}
/*
* Set sampling clock:
* - Internal clock
* - No VXI clock output
* - Divide mode
* - Rising edge
* - No 50 ohm termination
* - Clkdiv = 2 (I want a 100kHz clock from the 200 kHz internal
* clock - which yields a 10 us sampling period)
*/
regs[VD80_CCR/4] = swapbe32(1 << VD80_CLKDIV_SHIFT);
if (vme_bus_error_check(®s_desc)) {
printf("Bus error initializing CCR\n");
goto out;
}
/*
* Set trigger:
* - Internal trigger
* - No VXI trigger output
* - No trigger output
* - Rising edge
* - No 50 ohm termination
* - No trigger synchronization
*/
regs[VD80_TCR1/4] = 0;
if (vme_bus_error_check(®s_desc)) {
printf("Bus error initializing TCR1\n");
goto out;
}
/* Set number of post samples to 0 */
if (vd80_set_postsamples(0))
goto out;
/*
* Setup the Pretrigger Control Register:
* - Clear pretrigger counter on START
* - Clear PRESAMPLES on Pretrigger Status Register read
* - Clock the pretrigger counter on the sample clock
*/
regs[VD80_PTCR/4] |= swapbe32(VD80_PSCNTCLRONSTART |
VD80_PSREGCLRONREAD |
VD80_PSCNTCLKONSMPL);
if (vme_bus_error_check(®s_desc)) {
printf("Bus error initializing PTCR\n");
goto out;
}
/* Enable generation of debug waveform */
if ((rc = vd80_cmd_setdebug(1)))
goto out;
return 0;
out:
if (vme_unmap(®s_desc, 1))
printf("Failed to unmap operational registers: %s\n",
strerror(errno));
return rc;
}
int install_device(struct vmeio_device *dev, unsigned i)
{
unsigned int serial;
memset(dev, 0, sizeof(*dev));
dev->lun = lun[i];
dev->debug = DEBUG;
/* configure mmapped I/O */
if (base_address1_num && map(&dev->maps[0], base_address1[i],
data_width1, am1, size1)) {
printk(KERN_ERR PFX "could not map lun:%d, first space\n",
dev->lun);
goto out_map1;
}
/* check device absence */
serial = ioread32be(dev->maps[0].kernel_va);
if (vme_bus_error_check(1)) {
printk(KERN_ERR PFX "module %d not found at address 0x%08lx\n",
dev->lun, base_address1[i]);
dev->lun = -1;
goto out_map2;
}
if (base_address2_num && map(&dev->maps[1], base_address2[i],
data_width2, am2, size2)) {
printk(KERN_ERR PFX "could not map lun:%d, second space\n",
dev->lun);
goto out_map2;
}
/* configure interrupt handling */
dev->vector = vector[i];
dev->level = level;
dev->isrc = isrc;
dev->timeout = msecs_to_jiffies(TIMEOUT);
dev->icnt = 0;
init_waitqueue_head(&dev->queue);
if (dev->level && dev->vector &&
register_isr(dev, dev->vector, dev->level) < 0) {
printk(KERN_ERR PFX "could not register isr "
"for vector %d, level %d\n",
dev->vector, dev->level);
goto out_isr;
}
/* This will be eventually removed */
register_int_source(dev, dev->maps[0].kernel_va, dev->isrc);
printk(KERN_INFO PFX "lun %2ld installed, base address 0x%08lx, serial 0x%x\n",
lun[i], base_address1[i], serial);
return 0;
out_isr:
vme_release_mapping(&dev->maps[1], 1);
out_map2:
vme_release_mapping(&dev->maps[0], 1);
out_map1:
printk(KERN_ERR PFX "lun %2ld not installed\n", lun[i]);
return -ENODEV;
}
/**
* \brief Probe and configure the VD80
*
* \return 0 on success else 1 on failure.
*
* This function probes and configures the VD80 using the CR/CSR address space.
*
* It performs the following operations:
*
* \li map the VME CR/CSR address space of the board
* \li check we're talking to a VD80 board by checking the module ID
* \li configure the function 0 Address Decode Compare register (\a ADER0) to
* map the operational registers on an A24/D32 address space at base
* address 0x600000. Used for operational registers access.
* \li configure the function 1 Address Decode Compare register (\a ADER1) to
* map the operational registers on an A24-BLT/D32 address space at base
* address 0x600000. Used for DMA reading of the samples memory using
* VME block transfer.
*
* \note The VME CR/CSR address space is unmapped on function return.
*/
int vd80_map(void)
{
int rc = 1;
struct vme_mapping crcsr_desc;
unsigned int *crcsr;
int i;
unsigned int val;
char cr_sig[2];
char board_id[5];
char rev_id[5];
unsigned int desc_offset;
char board_desc[512];
/*
* Open a mapping into the VD80 CR/CSR (0x2f) address space for
* configuring the board.
*/
memset(&crcsr_desc, 0, sizeof(struct vme_mapping));
crcsr_desc.window_num = 0;
crcsr_desc.am = VD80_SETUP_AM;
crcsr_desc.read_prefetch_enabled = 0;
crcsr_desc.data_width = VD80_SETUP_DW;
crcsr_desc.sizeu = 0;
crcsr_desc.sizel = VD80_SETUP_SIZE;
crcsr_desc.vme_addru = 0;
crcsr_desc.vme_addrl = VD80_SETUP_BASE;
if ((crcsr = vme_map(&crcsr_desc, 1)) == NULL) {
printf("Failed to map CR/CSR: %s\n", strerror(errno));
return 1;
}
/* First check we're accessing a configuration ROM */
cr_sig[0] = swapbe32(crcsr[VD80_CR_SIG1/4]) & 0xff;
if (vme_bus_error_check(&crcsr_desc)) {
printf("Bus error reading CR signature byte 0 at %08x\n",
VD80_SETUP_BASE + VD80_CR_SIG1);
goto out;
}
cr_sig[1] = swapbe32(crcsr[VD80_CR_SIG2/4]) & 0xff;
if (vme_bus_error_check(&crcsr_desc)) {
printf("Bus error reading CR signature byte 1 at %08x\n",
VD80_SETUP_BASE + VD80_CR_SIG2);
goto out;
}
if ((cr_sig[0] != 'C') && (cr_sig[1] != 'R')) {
printf("Not a Configuration ROM at 0x%x (%08x %08x)\n",
VD80_SETUP_BASE, swapbe32(crcsr[VD80_CR_SIG1/4]),
swapbe32(crcsr[VD80_CR_SIG2/4]));
goto out;
}
/* Try to read module ID - offset 0x30 */
for (i = 0; i < VD80_CR_BOARD_ID_LEN; i++) {
val = swapbe32(crcsr[VD80_CR_BOARD_ID/4 + i]);
board_id[i] = (char)(val & 0xff);
}
board_id[4] = '\0';
if (vme_bus_error_check(&crcsr_desc)) {
printf("Bus error reading board ID\n");
goto out;
}
for (i = 0; i < VD80_CR_REV_ID_LEN; i++) {
val = swapbe32(crcsr[VD80_CR_REV_ID/4 + i]);
rev_id[i] = (char)(val & 0xff);
}
rev_id[4] = '\0';
if (vme_bus_error_check(&crcsr_desc)) {
printf("Bus error reading revision ID\n");
goto out;
}
if (strncmp(board_id, "VD80", 4)) {
printf("No VD80 board found at base address 0x%x\n",
VD80_SETUP_BASE);
goto out;
}
printf("Found board ID %s - revision ID: %s\n", board_id, rev_id);
/* Read board string */
desc_offset = 0;
for (i = 0; i < VD80_CR_DESC_PTR_LEN; i++) {
desc_offset <<= 8;
desc_offset |= swapbe32(crcsr[VD80_CR_DESC_PTR/4 + i]) & 0xff;
}
desc_offset &= ~3;
if (desc_offset != 0) {
for (i = 0; i < VD80_UCR_BOARD_DESC_LEN; i++) {
val = swapbe32(crcsr[0x1040/4 + i]);
board_desc[i] = (char)(val & 0xff);
if (board_desc[i] == '\0')
break;
}
board_desc[320] = '\0';
}
if (vme_bus_error_check(&crcsr_desc)) {
printf("Bus error reading board description\n");
goto out;
}
printf("Board name: %s\n", board_desc);
printf("\n");
/* Configure ADER0 for A24 USER DATA access (AM=0x39 BA=0x600000) */
crcsr[VD80_CSR_ADER0/4] = swapbe32((VD80_OPER_BASE >> 24) & 0xff);
crcsr[VD80_CSR_ADER0/4 + 1] = swapbe32((VD80_OPER_BASE >> 16) & 0xff);
crcsr[VD80_CSR_ADER0/4 + 2] = swapbe32((VD80_OPER_BASE >> 8) & 0xff);
crcsr[VD80_CSR_ADER0/4 + 3] = swapbe32(VD80_OPER_AM * 4);
if (vme_bus_error_check(&crcsr_desc)) {
printf("Bus error setting ADER0\n");
goto out;
}
/* Configure ADER1 for A24 USER block transfer (AM=0x3b BA=0x600000) */
crcsr[VD80_CSR_ADER1/4] = swapbe32((VD80_OPER_BASE >> 24) & 0xff);
crcsr[VD80_CSR_ADER1/4 + 1] = swapbe32((VD80_OPER_BASE >> 16) & 0xff);
crcsr[VD80_CSR_ADER1/4 + 2] = swapbe32((VD80_OPER_BASE >> 8) & 0xff);
crcsr[VD80_CSR_ADER1/4 + 3] = swapbe32(VD80_DMA_AM * 4);
if (vme_bus_error_check(&crcsr_desc)) {
printf("Bus error setting ADER1\n");
goto out;
}
/*
* Clear address counter enable for function 1 to use it for block
* transfer of the sample memory.
*/
val = swapbe32(crcsr[VD80_CSR_FUNC_ACEN/4]) | 0x02;
crcsr[VD80_CSR_FUNC_ACEN/4] = swapbe32(0);
if (vme_bus_error_check(&crcsr_desc)) {
printf("Bus error setting ACEN\n");
goto out;
}
/* Enable the module */
crcsr[VD80_CSR_BITSET/4] = swapbe32(VD80_CSR_ENABLE_MODULE);
if (vme_bus_error_check(&crcsr_desc)) {
printf("Bus error enabling module\n");
goto out;
}
rc = 0;
out:
if (vme_unmap(&crcsr_desc, 1))
printf("Failed to unmap CR/CSR space: %s\n",
strerror(errno));
return rc;
}